File: | clang/lib/Sema/SemaDecl.cpp |
Warning: | line 8719, column 35 Called C++ object pointer is null |
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1 | //===--- SemaDecl.cpp - Semantic Analysis for Declarations ----------------===// | |||
2 | // | |||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |||
4 | // See https://llvm.org/LICENSE.txt for license information. | |||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |||
6 | // | |||
7 | //===----------------------------------------------------------------------===// | |||
8 | // | |||
9 | // This file implements semantic analysis for declarations. | |||
10 | // | |||
11 | //===----------------------------------------------------------------------===// | |||
12 | ||||
13 | #include "TypeLocBuilder.h" | |||
14 | #include "clang/AST/ASTConsumer.h" | |||
15 | #include "clang/AST/ASTContext.h" | |||
16 | #include "clang/AST/ASTLambda.h" | |||
17 | #include "clang/AST/CXXInheritance.h" | |||
18 | #include "clang/AST/CharUnits.h" | |||
19 | #include "clang/AST/CommentDiagnostic.h" | |||
20 | #include "clang/AST/DeclCXX.h" | |||
21 | #include "clang/AST/DeclObjC.h" | |||
22 | #include "clang/AST/DeclTemplate.h" | |||
23 | #include "clang/AST/EvaluatedExprVisitor.h" | |||
24 | #include "clang/AST/Expr.h" | |||
25 | #include "clang/AST/ExprCXX.h" | |||
26 | #include "clang/AST/NonTrivialTypeVisitor.h" | |||
27 | #include "clang/AST/StmtCXX.h" | |||
28 | #include "clang/Basic/Builtins.h" | |||
29 | #include "clang/Basic/PartialDiagnostic.h" | |||
30 | #include "clang/Basic/SourceManager.h" | |||
31 | #include "clang/Basic/TargetInfo.h" | |||
32 | #include "clang/Lex/HeaderSearch.h" // TODO: Sema shouldn't depend on Lex | |||
33 | #include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering. | |||
34 | #include "clang/Lex/ModuleLoader.h" // TODO: Sema shouldn't depend on Lex | |||
35 | #include "clang/Lex/Preprocessor.h" // Included for isCodeCompletionEnabled() | |||
36 | #include "clang/Sema/CXXFieldCollector.h" | |||
37 | #include "clang/Sema/DeclSpec.h" | |||
38 | #include "clang/Sema/DelayedDiagnostic.h" | |||
39 | #include "clang/Sema/Initialization.h" | |||
40 | #include "clang/Sema/Lookup.h" | |||
41 | #include "clang/Sema/ParsedTemplate.h" | |||
42 | #include "clang/Sema/Scope.h" | |||
43 | #include "clang/Sema/ScopeInfo.h" | |||
44 | #include "clang/Sema/SemaInternal.h" | |||
45 | #include "clang/Sema/Template.h" | |||
46 | #include "llvm/ADT/SmallString.h" | |||
47 | #include "llvm/ADT/Triple.h" | |||
48 | #include <algorithm> | |||
49 | #include <cstring> | |||
50 | #include <functional> | |||
51 | #include <unordered_map> | |||
52 | ||||
53 | using namespace clang; | |||
54 | using namespace sema; | |||
55 | ||||
56 | Sema::DeclGroupPtrTy Sema::ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType) { | |||
57 | if (OwnedType) { | |||
58 | Decl *Group[2] = { OwnedType, Ptr }; | |||
59 | return DeclGroupPtrTy::make(DeclGroupRef::Create(Context, Group, 2)); | |||
60 | } | |||
61 | ||||
62 | return DeclGroupPtrTy::make(DeclGroupRef(Ptr)); | |||
63 | } | |||
64 | ||||
65 | namespace { | |||
66 | ||||
67 | class TypeNameValidatorCCC final : public CorrectionCandidateCallback { | |||
68 | public: | |||
69 | TypeNameValidatorCCC(bool AllowInvalid, bool WantClass = false, | |||
70 | bool AllowTemplates = false, | |||
71 | bool AllowNonTemplates = true) | |||
72 | : AllowInvalidDecl(AllowInvalid), WantClassName(WantClass), | |||
73 | AllowTemplates(AllowTemplates), AllowNonTemplates(AllowNonTemplates) { | |||
74 | WantExpressionKeywords = false; | |||
75 | WantCXXNamedCasts = false; | |||
76 | WantRemainingKeywords = false; | |||
77 | } | |||
78 | ||||
79 | bool ValidateCandidate(const TypoCorrection &candidate) override { | |||
80 | if (NamedDecl *ND = candidate.getCorrectionDecl()) { | |||
81 | if (!AllowInvalidDecl && ND->isInvalidDecl()) | |||
82 | return false; | |||
83 | ||||
84 | if (getAsTypeTemplateDecl(ND)) | |||
85 | return AllowTemplates; | |||
86 | ||||
87 | bool IsType = isa<TypeDecl>(ND) || isa<ObjCInterfaceDecl>(ND); | |||
88 | if (!IsType) | |||
89 | return false; | |||
90 | ||||
91 | if (AllowNonTemplates) | |||
92 | return true; | |||
93 | ||||
94 | // An injected-class-name of a class template (specialization) is valid | |||
95 | // as a template or as a non-template. | |||
96 | if (AllowTemplates) { | |||
97 | auto *RD = dyn_cast<CXXRecordDecl>(ND); | |||
98 | if (!RD || !RD->isInjectedClassName()) | |||
99 | return false; | |||
100 | RD = cast<CXXRecordDecl>(RD->getDeclContext()); | |||
101 | return RD->getDescribedClassTemplate() || | |||
102 | isa<ClassTemplateSpecializationDecl>(RD); | |||
103 | } | |||
104 | ||||
105 | return false; | |||
106 | } | |||
107 | ||||
108 | return !WantClassName && candidate.isKeyword(); | |||
109 | } | |||
110 | ||||
111 | std::unique_ptr<CorrectionCandidateCallback> clone() override { | |||
112 | return std::make_unique<TypeNameValidatorCCC>(*this); | |||
113 | } | |||
114 | ||||
115 | private: | |||
116 | bool AllowInvalidDecl; | |||
117 | bool WantClassName; | |||
118 | bool AllowTemplates; | |||
119 | bool AllowNonTemplates; | |||
120 | }; | |||
121 | ||||
122 | } // end anonymous namespace | |||
123 | ||||
124 | /// Determine whether the token kind starts a simple-type-specifier. | |||
125 | bool Sema::isSimpleTypeSpecifier(tok::TokenKind Kind) const { | |||
126 | switch (Kind) { | |||
127 | // FIXME: Take into account the current language when deciding whether a | |||
128 | // token kind is a valid type specifier | |||
129 | case tok::kw_short: | |||
130 | case tok::kw_long: | |||
131 | case tok::kw___int64: | |||
132 | case tok::kw___int128: | |||
133 | case tok::kw_signed: | |||
134 | case tok::kw_unsigned: | |||
135 | case tok::kw_void: | |||
136 | case tok::kw_char: | |||
137 | case tok::kw_int: | |||
138 | case tok::kw_half: | |||
139 | case tok::kw_float: | |||
140 | case tok::kw_double: | |||
141 | case tok::kw___bf16: | |||
142 | case tok::kw__Float16: | |||
143 | case tok::kw___float128: | |||
144 | case tok::kw_wchar_t: | |||
145 | case tok::kw_bool: | |||
146 | case tok::kw___underlying_type: | |||
147 | case tok::kw___auto_type: | |||
148 | return true; | |||
149 | ||||
150 | case tok::annot_typename: | |||
151 | case tok::kw_char16_t: | |||
152 | case tok::kw_char32_t: | |||
153 | case tok::kw_typeof: | |||
154 | case tok::annot_decltype: | |||
155 | case tok::kw_decltype: | |||
156 | return getLangOpts().CPlusPlus; | |||
157 | ||||
158 | case tok::kw_char8_t: | |||
159 | return getLangOpts().Char8; | |||
160 | ||||
161 | default: | |||
162 | break; | |||
163 | } | |||
164 | ||||
165 | return false; | |||
166 | } | |||
167 | ||||
168 | namespace { | |||
169 | enum class UnqualifiedTypeNameLookupResult { | |||
170 | NotFound, | |||
171 | FoundNonType, | |||
172 | FoundType | |||
173 | }; | |||
174 | } // end anonymous namespace | |||
175 | ||||
176 | /// Tries to perform unqualified lookup of the type decls in bases for | |||
177 | /// dependent class. | |||
178 | /// \return \a NotFound if no any decls is found, \a FoundNotType if found not a | |||
179 | /// type decl, \a FoundType if only type decls are found. | |||
180 | static UnqualifiedTypeNameLookupResult | |||
181 | lookupUnqualifiedTypeNameInBase(Sema &S, const IdentifierInfo &II, | |||
182 | SourceLocation NameLoc, | |||
183 | const CXXRecordDecl *RD) { | |||
184 | if (!RD->hasDefinition()) | |||
185 | return UnqualifiedTypeNameLookupResult::NotFound; | |||
186 | // Look for type decls in base classes. | |||
187 | UnqualifiedTypeNameLookupResult FoundTypeDecl = | |||
188 | UnqualifiedTypeNameLookupResult::NotFound; | |||
189 | for (const auto &Base : RD->bases()) { | |||
190 | const CXXRecordDecl *BaseRD = nullptr; | |||
191 | if (auto *BaseTT = Base.getType()->getAs<TagType>()) | |||
192 | BaseRD = BaseTT->getAsCXXRecordDecl(); | |||
193 | else if (auto *TST = Base.getType()->getAs<TemplateSpecializationType>()) { | |||
194 | // Look for type decls in dependent base classes that have known primary | |||
195 | // templates. | |||
196 | if (!TST || !TST->isDependentType()) | |||
197 | continue; | |||
198 | auto *TD = TST->getTemplateName().getAsTemplateDecl(); | |||
199 | if (!TD) | |||
200 | continue; | |||
201 | if (auto *BasePrimaryTemplate = | |||
202 | dyn_cast_or_null<CXXRecordDecl>(TD->getTemplatedDecl())) { | |||
203 | if (BasePrimaryTemplate->getCanonicalDecl() != RD->getCanonicalDecl()) | |||
204 | BaseRD = BasePrimaryTemplate; | |||
205 | else if (auto *CTD = dyn_cast<ClassTemplateDecl>(TD)) { | |||
206 | if (const ClassTemplatePartialSpecializationDecl *PS = | |||
207 | CTD->findPartialSpecialization(Base.getType())) | |||
208 | if (PS->getCanonicalDecl() != RD->getCanonicalDecl()) | |||
209 | BaseRD = PS; | |||
210 | } | |||
211 | } | |||
212 | } | |||
213 | if (BaseRD) { | |||
214 | for (NamedDecl *ND : BaseRD->lookup(&II)) { | |||
215 | if (!isa<TypeDecl>(ND)) | |||
216 | return UnqualifiedTypeNameLookupResult::FoundNonType; | |||
217 | FoundTypeDecl = UnqualifiedTypeNameLookupResult::FoundType; | |||
218 | } | |||
219 | if (FoundTypeDecl == UnqualifiedTypeNameLookupResult::NotFound) { | |||
220 | switch (lookupUnqualifiedTypeNameInBase(S, II, NameLoc, BaseRD)) { | |||
221 | case UnqualifiedTypeNameLookupResult::FoundNonType: | |||
222 | return UnqualifiedTypeNameLookupResult::FoundNonType; | |||
223 | case UnqualifiedTypeNameLookupResult::FoundType: | |||
224 | FoundTypeDecl = UnqualifiedTypeNameLookupResult::FoundType; | |||
225 | break; | |||
226 | case UnqualifiedTypeNameLookupResult::NotFound: | |||
227 | break; | |||
228 | } | |||
229 | } | |||
230 | } | |||
231 | } | |||
232 | ||||
233 | return FoundTypeDecl; | |||
234 | } | |||
235 | ||||
236 | static ParsedType recoverFromTypeInKnownDependentBase(Sema &S, | |||
237 | const IdentifierInfo &II, | |||
238 | SourceLocation NameLoc) { | |||
239 | // Lookup in the parent class template context, if any. | |||
240 | const CXXRecordDecl *RD = nullptr; | |||
241 | UnqualifiedTypeNameLookupResult FoundTypeDecl = | |||
242 | UnqualifiedTypeNameLookupResult::NotFound; | |||
243 | for (DeclContext *DC = S.CurContext; | |||
244 | DC && FoundTypeDecl == UnqualifiedTypeNameLookupResult::NotFound; | |||
245 | DC = DC->getParent()) { | |||
246 | // Look for type decls in dependent base classes that have known primary | |||
247 | // templates. | |||
248 | RD = dyn_cast<CXXRecordDecl>(DC); | |||
249 | if (RD && RD->getDescribedClassTemplate()) | |||
250 | FoundTypeDecl = lookupUnqualifiedTypeNameInBase(S, II, NameLoc, RD); | |||
251 | } | |||
252 | if (FoundTypeDecl != UnqualifiedTypeNameLookupResult::FoundType) | |||
253 | return nullptr; | |||
254 | ||||
255 | // We found some types in dependent base classes. Recover as if the user | |||
256 | // wrote 'typename MyClass::II' instead of 'II'. We'll fully resolve the | |||
257 | // lookup during template instantiation. | |||
258 | S.Diag(NameLoc, diag::ext_found_via_dependent_bases_lookup) << &II; | |||
259 | ||||
260 | ASTContext &Context = S.Context; | |||
261 | auto *NNS = NestedNameSpecifier::Create(Context, nullptr, false, | |||
262 | cast<Type>(Context.getRecordType(RD))); | |||
263 | QualType T = Context.getDependentNameType(ETK_Typename, NNS, &II); | |||
264 | ||||
265 | CXXScopeSpec SS; | |||
266 | SS.MakeTrivial(Context, NNS, SourceRange(NameLoc)); | |||
267 | ||||
268 | TypeLocBuilder Builder; | |||
269 | DependentNameTypeLoc DepTL = Builder.push<DependentNameTypeLoc>(T); | |||
270 | DepTL.setNameLoc(NameLoc); | |||
271 | DepTL.setElaboratedKeywordLoc(SourceLocation()); | |||
272 | DepTL.setQualifierLoc(SS.getWithLocInContext(Context)); | |||
273 | return S.CreateParsedType(T, Builder.getTypeSourceInfo(Context, T)); | |||
274 | } | |||
275 | ||||
276 | /// If the identifier refers to a type name within this scope, | |||
277 | /// return the declaration of that type. | |||
278 | /// | |||
279 | /// This routine performs ordinary name lookup of the identifier II | |||
280 | /// within the given scope, with optional C++ scope specifier SS, to | |||
281 | /// determine whether the name refers to a type. If so, returns an | |||
282 | /// opaque pointer (actually a QualType) corresponding to that | |||
283 | /// type. Otherwise, returns NULL. | |||
284 | ParsedType Sema::getTypeName(const IdentifierInfo &II, SourceLocation NameLoc, | |||
285 | Scope *S, CXXScopeSpec *SS, | |||
286 | bool isClassName, bool HasTrailingDot, | |||
287 | ParsedType ObjectTypePtr, | |||
288 | bool IsCtorOrDtorName, | |||
289 | bool WantNontrivialTypeSourceInfo, | |||
290 | bool IsClassTemplateDeductionContext, | |||
291 | IdentifierInfo **CorrectedII) { | |||
292 | // FIXME: Consider allowing this outside C++1z mode as an extension. | |||
293 | bool AllowDeducedTemplate = IsClassTemplateDeductionContext && | |||
294 | getLangOpts().CPlusPlus17 && !IsCtorOrDtorName && | |||
295 | !isClassName && !HasTrailingDot; | |||
296 | ||||
297 | // Determine where we will perform name lookup. | |||
298 | DeclContext *LookupCtx = nullptr; | |||
299 | if (ObjectTypePtr) { | |||
300 | QualType ObjectType = ObjectTypePtr.get(); | |||
301 | if (ObjectType->isRecordType()) | |||
302 | LookupCtx = computeDeclContext(ObjectType); | |||
303 | } else if (SS && SS->isNotEmpty()) { | |||
304 | LookupCtx = computeDeclContext(*SS, false); | |||
305 | ||||
306 | if (!LookupCtx) { | |||
307 | if (isDependentScopeSpecifier(*SS)) { | |||
308 | // C++ [temp.res]p3: | |||
309 | // A qualified-id that refers to a type and in which the | |||
310 | // nested-name-specifier depends on a template-parameter (14.6.2) | |||
311 | // shall be prefixed by the keyword typename to indicate that the | |||
312 | // qualified-id denotes a type, forming an | |||
313 | // elaborated-type-specifier (7.1.5.3). | |||
314 | // | |||
315 | // We therefore do not perform any name lookup if the result would | |||
316 | // refer to a member of an unknown specialization. | |||
317 | if (!isClassName && !IsCtorOrDtorName) | |||
318 | return nullptr; | |||
319 | ||||
320 | // We know from the grammar that this name refers to a type, | |||
321 | // so build a dependent node to describe the type. | |||
322 | if (WantNontrivialTypeSourceInfo) | |||
323 | return ActOnTypenameType(S, SourceLocation(), *SS, II, NameLoc).get(); | |||
324 | ||||
325 | NestedNameSpecifierLoc QualifierLoc = SS->getWithLocInContext(Context); | |||
326 | QualType T = CheckTypenameType(ETK_None, SourceLocation(), QualifierLoc, | |||
327 | II, NameLoc); | |||
328 | return ParsedType::make(T); | |||
329 | } | |||
330 | ||||
331 | return nullptr; | |||
332 | } | |||
333 | ||||
334 | if (!LookupCtx->isDependentContext() && | |||
335 | RequireCompleteDeclContext(*SS, LookupCtx)) | |||
336 | return nullptr; | |||
337 | } | |||
338 | ||||
339 | // FIXME: LookupNestedNameSpecifierName isn't the right kind of | |||
340 | // lookup for class-names. | |||
341 | LookupNameKind Kind = isClassName ? LookupNestedNameSpecifierName : | |||
342 | LookupOrdinaryName; | |||
343 | LookupResult Result(*this, &II, NameLoc, Kind); | |||
344 | if (LookupCtx) { | |||
345 | // Perform "qualified" name lookup into the declaration context we | |||
346 | // computed, which is either the type of the base of a member access | |||
347 | // expression or the declaration context associated with a prior | |||
348 | // nested-name-specifier. | |||
349 | LookupQualifiedName(Result, LookupCtx); | |||
350 | ||||
351 | if (ObjectTypePtr && Result.empty()) { | |||
352 | // C++ [basic.lookup.classref]p3: | |||
353 | // If the unqualified-id is ~type-name, the type-name is looked up | |||
354 | // in the context of the entire postfix-expression. If the type T of | |||
355 | // the object expression is of a class type C, the type-name is also | |||
356 | // looked up in the scope of class C. At least one of the lookups shall | |||
357 | // find a name that refers to (possibly cv-qualified) T. | |||
358 | LookupName(Result, S); | |||
359 | } | |||
360 | } else { | |||
361 | // Perform unqualified name lookup. | |||
362 | LookupName(Result, S); | |||
363 | ||||
364 | // For unqualified lookup in a class template in MSVC mode, look into | |||
365 | // dependent base classes where the primary class template is known. | |||
366 | if (Result.empty() && getLangOpts().MSVCCompat && (!SS || SS->isEmpty())) { | |||
367 | if (ParsedType TypeInBase = | |||
368 | recoverFromTypeInKnownDependentBase(*this, II, NameLoc)) | |||
369 | return TypeInBase; | |||
370 | } | |||
371 | } | |||
372 | ||||
373 | NamedDecl *IIDecl = nullptr; | |||
374 | switch (Result.getResultKind()) { | |||
375 | case LookupResult::NotFound: | |||
376 | case LookupResult::NotFoundInCurrentInstantiation: | |||
377 | if (CorrectedII) { | |||
378 | TypeNameValidatorCCC CCC(/*AllowInvalid=*/true, isClassName, | |||
379 | AllowDeducedTemplate); | |||
380 | TypoCorrection Correction = CorrectTypo(Result.getLookupNameInfo(), Kind, | |||
381 | S, SS, CCC, CTK_ErrorRecovery); | |||
382 | IdentifierInfo *NewII = Correction.getCorrectionAsIdentifierInfo(); | |||
383 | TemplateTy Template; | |||
384 | bool MemberOfUnknownSpecialization; | |||
385 | UnqualifiedId TemplateName; | |||
386 | TemplateName.setIdentifier(NewII, NameLoc); | |||
387 | NestedNameSpecifier *NNS = Correction.getCorrectionSpecifier(); | |||
388 | CXXScopeSpec NewSS, *NewSSPtr = SS; | |||
389 | if (SS && NNS) { | |||
390 | NewSS.MakeTrivial(Context, NNS, SourceRange(NameLoc)); | |||
391 | NewSSPtr = &NewSS; | |||
392 | } | |||
393 | if (Correction && (NNS || NewII != &II) && | |||
394 | // Ignore a correction to a template type as the to-be-corrected | |||
395 | // identifier is not a template (typo correction for template names | |||
396 | // is handled elsewhere). | |||
397 | !(getLangOpts().CPlusPlus && NewSSPtr && | |||
398 | isTemplateName(S, *NewSSPtr, false, TemplateName, nullptr, false, | |||
399 | Template, MemberOfUnknownSpecialization))) { | |||
400 | ParsedType Ty = getTypeName(*NewII, NameLoc, S, NewSSPtr, | |||
401 | isClassName, HasTrailingDot, ObjectTypePtr, | |||
402 | IsCtorOrDtorName, | |||
403 | WantNontrivialTypeSourceInfo, | |||
404 | IsClassTemplateDeductionContext); | |||
405 | if (Ty) { | |||
406 | diagnoseTypo(Correction, | |||
407 | PDiag(diag::err_unknown_type_or_class_name_suggest) | |||
408 | << Result.getLookupName() << isClassName); | |||
409 | if (SS && NNS) | |||
410 | SS->MakeTrivial(Context, NNS, SourceRange(NameLoc)); | |||
411 | *CorrectedII = NewII; | |||
412 | return Ty; | |||
413 | } | |||
414 | } | |||
415 | } | |||
416 | // If typo correction failed or was not performed, fall through | |||
417 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | |||
418 | case LookupResult::FoundOverloaded: | |||
419 | case LookupResult::FoundUnresolvedValue: | |||
420 | Result.suppressDiagnostics(); | |||
421 | return nullptr; | |||
422 | ||||
423 | case LookupResult::Ambiguous: | |||
424 | // Recover from type-hiding ambiguities by hiding the type. We'll | |||
425 | // do the lookup again when looking for an object, and we can | |||
426 | // diagnose the error then. If we don't do this, then the error | |||
427 | // about hiding the type will be immediately followed by an error | |||
428 | // that only makes sense if the identifier was treated like a type. | |||
429 | if (Result.getAmbiguityKind() == LookupResult::AmbiguousTagHiding) { | |||
430 | Result.suppressDiagnostics(); | |||
431 | return nullptr; | |||
432 | } | |||
433 | ||||
434 | // Look to see if we have a type anywhere in the list of results. | |||
435 | for (LookupResult::iterator Res = Result.begin(), ResEnd = Result.end(); | |||
436 | Res != ResEnd; ++Res) { | |||
437 | if (isa<TypeDecl>(*Res) || isa<ObjCInterfaceDecl>(*Res) || | |||
438 | (AllowDeducedTemplate && getAsTypeTemplateDecl(*Res))) { | |||
439 | if (!IIDecl || | |||
440 | (*Res)->getLocation().getRawEncoding() < | |||
441 | IIDecl->getLocation().getRawEncoding()) | |||
442 | IIDecl = *Res; | |||
443 | } | |||
444 | } | |||
445 | ||||
446 | if (!IIDecl) { | |||
447 | // None of the entities we found is a type, so there is no way | |||
448 | // to even assume that the result is a type. In this case, don't | |||
449 | // complain about the ambiguity. The parser will either try to | |||
450 | // perform this lookup again (e.g., as an object name), which | |||
451 | // will produce the ambiguity, or will complain that it expected | |||
452 | // a type name. | |||
453 | Result.suppressDiagnostics(); | |||
454 | return nullptr; | |||
455 | } | |||
456 | ||||
457 | // We found a type within the ambiguous lookup; diagnose the | |||
458 | // ambiguity and then return that type. This might be the right | |||
459 | // answer, or it might not be, but it suppresses any attempt to | |||
460 | // perform the name lookup again. | |||
461 | break; | |||
462 | ||||
463 | case LookupResult::Found: | |||
464 | IIDecl = Result.getFoundDecl(); | |||
465 | break; | |||
466 | } | |||
467 | ||||
468 | assert(IIDecl && "Didn't find decl")((IIDecl && "Didn't find decl") ? static_cast<void > (0) : __assert_fail ("IIDecl && \"Didn't find decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 468, __PRETTY_FUNCTION__)); | |||
469 | ||||
470 | QualType T; | |||
471 | if (TypeDecl *TD = dyn_cast<TypeDecl>(IIDecl)) { | |||
472 | // C++ [class.qual]p2: A lookup that would find the injected-class-name | |||
473 | // instead names the constructors of the class, except when naming a class. | |||
474 | // This is ill-formed when we're not actually forming a ctor or dtor name. | |||
475 | auto *LookupRD = dyn_cast_or_null<CXXRecordDecl>(LookupCtx); | |||
476 | auto *FoundRD = dyn_cast<CXXRecordDecl>(TD); | |||
477 | if (!isClassName && !IsCtorOrDtorName && LookupRD && FoundRD && | |||
478 | FoundRD->isInjectedClassName() && | |||
479 | declaresSameEntity(LookupRD, cast<Decl>(FoundRD->getParent()))) | |||
480 | Diag(NameLoc, diag::err_out_of_line_qualified_id_type_names_constructor) | |||
481 | << &II << /*Type*/1; | |||
482 | ||||
483 | DiagnoseUseOfDecl(IIDecl, NameLoc); | |||
484 | ||||
485 | T = Context.getTypeDeclType(TD); | |||
486 | MarkAnyDeclReferenced(TD->getLocation(), TD, /*OdrUse=*/false); | |||
487 | } else if (ObjCInterfaceDecl *IDecl = dyn_cast<ObjCInterfaceDecl>(IIDecl)) { | |||
488 | (void)DiagnoseUseOfDecl(IDecl, NameLoc); | |||
489 | if (!HasTrailingDot) | |||
490 | T = Context.getObjCInterfaceType(IDecl); | |||
491 | } else if (AllowDeducedTemplate) { | |||
492 | if (auto *TD = getAsTypeTemplateDecl(IIDecl)) | |||
493 | T = Context.getDeducedTemplateSpecializationType(TemplateName(TD), | |||
494 | QualType(), false); | |||
495 | } | |||
496 | ||||
497 | if (T.isNull()) { | |||
498 | // If it's not plausibly a type, suppress diagnostics. | |||
499 | Result.suppressDiagnostics(); | |||
500 | return nullptr; | |||
501 | } | |||
502 | ||||
503 | // NOTE: avoid constructing an ElaboratedType(Loc) if this is a | |||
504 | // constructor or destructor name (in such a case, the scope specifier | |||
505 | // will be attached to the enclosing Expr or Decl node). | |||
506 | if (SS && SS->isNotEmpty() && !IsCtorOrDtorName && | |||
507 | !isa<ObjCInterfaceDecl>(IIDecl)) { | |||
508 | if (WantNontrivialTypeSourceInfo) { | |||
509 | // Construct a type with type-source information. | |||
510 | TypeLocBuilder Builder; | |||
511 | Builder.pushTypeSpec(T).setNameLoc(NameLoc); | |||
512 | ||||
513 | T = getElaboratedType(ETK_None, *SS, T); | |||
514 | ElaboratedTypeLoc ElabTL = Builder.push<ElaboratedTypeLoc>(T); | |||
515 | ElabTL.setElaboratedKeywordLoc(SourceLocation()); | |||
516 | ElabTL.setQualifierLoc(SS->getWithLocInContext(Context)); | |||
517 | return CreateParsedType(T, Builder.getTypeSourceInfo(Context, T)); | |||
518 | } else { | |||
519 | T = getElaboratedType(ETK_None, *SS, T); | |||
520 | } | |||
521 | } | |||
522 | ||||
523 | return ParsedType::make(T); | |||
524 | } | |||
525 | ||||
526 | // Builds a fake NNS for the given decl context. | |||
527 | static NestedNameSpecifier * | |||
528 | synthesizeCurrentNestedNameSpecifier(ASTContext &Context, DeclContext *DC) { | |||
529 | for (;; DC = DC->getLookupParent()) { | |||
530 | DC = DC->getPrimaryContext(); | |||
531 | auto *ND = dyn_cast<NamespaceDecl>(DC); | |||
532 | if (ND && !ND->isInline() && !ND->isAnonymousNamespace()) | |||
533 | return NestedNameSpecifier::Create(Context, nullptr, ND); | |||
534 | else if (auto *RD = dyn_cast<CXXRecordDecl>(DC)) | |||
535 | return NestedNameSpecifier::Create(Context, nullptr, RD->isTemplateDecl(), | |||
536 | RD->getTypeForDecl()); | |||
537 | else if (isa<TranslationUnitDecl>(DC)) | |||
538 | return NestedNameSpecifier::GlobalSpecifier(Context); | |||
539 | } | |||
540 | llvm_unreachable("something isn't in TU scope?")::llvm::llvm_unreachable_internal("something isn't in TU scope?" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 540); | |||
541 | } | |||
542 | ||||
543 | /// Find the parent class with dependent bases of the innermost enclosing method | |||
544 | /// context. Do not look for enclosing CXXRecordDecls directly, or we will end | |||
545 | /// up allowing unqualified dependent type names at class-level, which MSVC | |||
546 | /// correctly rejects. | |||
547 | static const CXXRecordDecl * | |||
548 | findRecordWithDependentBasesOfEnclosingMethod(const DeclContext *DC) { | |||
549 | for (; DC && DC->isDependentContext(); DC = DC->getLookupParent()) { | |||
550 | DC = DC->getPrimaryContext(); | |||
551 | if (const auto *MD = dyn_cast<CXXMethodDecl>(DC)) | |||
552 | if (MD->getParent()->hasAnyDependentBases()) | |||
553 | return MD->getParent(); | |||
554 | } | |||
555 | return nullptr; | |||
556 | } | |||
557 | ||||
558 | ParsedType Sema::ActOnMSVCUnknownTypeName(const IdentifierInfo &II, | |||
559 | SourceLocation NameLoc, | |||
560 | bool IsTemplateTypeArg) { | |||
561 | assert(getLangOpts().MSVCCompat && "shouldn't be called in non-MSVC mode")((getLangOpts().MSVCCompat && "shouldn't be called in non-MSVC mode" ) ? static_cast<void> (0) : __assert_fail ("getLangOpts().MSVCCompat && \"shouldn't be called in non-MSVC mode\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 561, __PRETTY_FUNCTION__)); | |||
562 | ||||
563 | NestedNameSpecifier *NNS = nullptr; | |||
564 | if (IsTemplateTypeArg && getCurScope()->isTemplateParamScope()) { | |||
565 | // If we weren't able to parse a default template argument, delay lookup | |||
566 | // until instantiation time by making a non-dependent DependentTypeName. We | |||
567 | // pretend we saw a NestedNameSpecifier referring to the current scope, and | |||
568 | // lookup is retried. | |||
569 | // FIXME: This hurts our diagnostic quality, since we get errors like "no | |||
570 | // type named 'Foo' in 'current_namespace'" when the user didn't write any | |||
571 | // name specifiers. | |||
572 | NNS = synthesizeCurrentNestedNameSpecifier(Context, CurContext); | |||
573 | Diag(NameLoc, diag::ext_ms_delayed_template_argument) << &II; | |||
574 | } else if (const CXXRecordDecl *RD = | |||
575 | findRecordWithDependentBasesOfEnclosingMethod(CurContext)) { | |||
576 | // Build a DependentNameType that will perform lookup into RD at | |||
577 | // instantiation time. | |||
578 | NNS = NestedNameSpecifier::Create(Context, nullptr, RD->isTemplateDecl(), | |||
579 | RD->getTypeForDecl()); | |||
580 | ||||
581 | // Diagnose that this identifier was undeclared, and retry the lookup during | |||
582 | // template instantiation. | |||
583 | Diag(NameLoc, diag::ext_undeclared_unqual_id_with_dependent_base) << &II | |||
584 | << RD; | |||
585 | } else { | |||
586 | // This is not a situation that we should recover from. | |||
587 | return ParsedType(); | |||
588 | } | |||
589 | ||||
590 | QualType T = Context.getDependentNameType(ETK_None, NNS, &II); | |||
591 | ||||
592 | // Build type location information. We synthesized the qualifier, so we have | |||
593 | // to build a fake NestedNameSpecifierLoc. | |||
594 | NestedNameSpecifierLocBuilder NNSLocBuilder; | |||
595 | NNSLocBuilder.MakeTrivial(Context, NNS, SourceRange(NameLoc)); | |||
596 | NestedNameSpecifierLoc QualifierLoc = NNSLocBuilder.getWithLocInContext(Context); | |||
597 | ||||
598 | TypeLocBuilder Builder; | |||
599 | DependentNameTypeLoc DepTL = Builder.push<DependentNameTypeLoc>(T); | |||
600 | DepTL.setNameLoc(NameLoc); | |||
601 | DepTL.setElaboratedKeywordLoc(SourceLocation()); | |||
602 | DepTL.setQualifierLoc(QualifierLoc); | |||
603 | return CreateParsedType(T, Builder.getTypeSourceInfo(Context, T)); | |||
604 | } | |||
605 | ||||
606 | /// isTagName() - This method is called *for error recovery purposes only* | |||
607 | /// to determine if the specified name is a valid tag name ("struct foo"). If | |||
608 | /// so, this returns the TST for the tag corresponding to it (TST_enum, | |||
609 | /// TST_union, TST_struct, TST_interface, TST_class). This is used to diagnose | |||
610 | /// cases in C where the user forgot to specify the tag. | |||
611 | DeclSpec::TST Sema::isTagName(IdentifierInfo &II, Scope *S) { | |||
612 | // Do a tag name lookup in this scope. | |||
613 | LookupResult R(*this, &II, SourceLocation(), LookupTagName); | |||
614 | LookupName(R, S, false); | |||
615 | R.suppressDiagnostics(); | |||
616 | if (R.getResultKind() == LookupResult::Found) | |||
617 | if (const TagDecl *TD = R.getAsSingle<TagDecl>()) { | |||
618 | switch (TD->getTagKind()) { | |||
619 | case TTK_Struct: return DeclSpec::TST_struct; | |||
620 | case TTK_Interface: return DeclSpec::TST_interface; | |||
621 | case TTK_Union: return DeclSpec::TST_union; | |||
622 | case TTK_Class: return DeclSpec::TST_class; | |||
623 | case TTK_Enum: return DeclSpec::TST_enum; | |||
624 | } | |||
625 | } | |||
626 | ||||
627 | return DeclSpec::TST_unspecified; | |||
628 | } | |||
629 | ||||
630 | /// isMicrosoftMissingTypename - In Microsoft mode, within class scope, | |||
631 | /// if a CXXScopeSpec's type is equal to the type of one of the base classes | |||
632 | /// then downgrade the missing typename error to a warning. | |||
633 | /// This is needed for MSVC compatibility; Example: | |||
634 | /// @code | |||
635 | /// template<class T> class A { | |||
636 | /// public: | |||
637 | /// typedef int TYPE; | |||
638 | /// }; | |||
639 | /// template<class T> class B : public A<T> { | |||
640 | /// public: | |||
641 | /// A<T>::TYPE a; // no typename required because A<T> is a base class. | |||
642 | /// }; | |||
643 | /// @endcode | |||
644 | bool Sema::isMicrosoftMissingTypename(const CXXScopeSpec *SS, Scope *S) { | |||
645 | if (CurContext->isRecord()) { | |||
646 | if (SS->getScopeRep()->getKind() == NestedNameSpecifier::Super) | |||
647 | return true; | |||
648 | ||||
649 | const Type *Ty = SS->getScopeRep()->getAsType(); | |||
650 | ||||
651 | CXXRecordDecl *RD = cast<CXXRecordDecl>(CurContext); | |||
652 | for (const auto &Base : RD->bases()) | |||
653 | if (Ty && Context.hasSameUnqualifiedType(QualType(Ty, 1), Base.getType())) | |||
654 | return true; | |||
655 | return S->isFunctionPrototypeScope(); | |||
656 | } | |||
657 | return CurContext->isFunctionOrMethod() || S->isFunctionPrototypeScope(); | |||
658 | } | |||
659 | ||||
660 | void Sema::DiagnoseUnknownTypeName(IdentifierInfo *&II, | |||
661 | SourceLocation IILoc, | |||
662 | Scope *S, | |||
663 | CXXScopeSpec *SS, | |||
664 | ParsedType &SuggestedType, | |||
665 | bool IsTemplateName) { | |||
666 | // Don't report typename errors for editor placeholders. | |||
667 | if (II->isEditorPlaceholder()) | |||
668 | return; | |||
669 | // We don't have anything to suggest (yet). | |||
670 | SuggestedType = nullptr; | |||
671 | ||||
672 | // There may have been a typo in the name of the type. Look up typo | |||
673 | // results, in case we have something that we can suggest. | |||
674 | TypeNameValidatorCCC CCC(/*AllowInvalid=*/false, /*WantClass=*/false, | |||
675 | /*AllowTemplates=*/IsTemplateName, | |||
676 | /*AllowNonTemplates=*/!IsTemplateName); | |||
677 | if (TypoCorrection Corrected = | |||
678 | CorrectTypo(DeclarationNameInfo(II, IILoc), LookupOrdinaryName, S, SS, | |||
679 | CCC, CTK_ErrorRecovery)) { | |||
680 | // FIXME: Support error recovery for the template-name case. | |||
681 | bool CanRecover = !IsTemplateName; | |||
682 | if (Corrected.isKeyword()) { | |||
683 | // We corrected to a keyword. | |||
684 | diagnoseTypo(Corrected, | |||
685 | PDiag(IsTemplateName ? diag::err_no_template_suggest | |||
686 | : diag::err_unknown_typename_suggest) | |||
687 | << II); | |||
688 | II = Corrected.getCorrectionAsIdentifierInfo(); | |||
689 | } else { | |||
690 | // We found a similarly-named type or interface; suggest that. | |||
691 | if (!SS || !SS->isSet()) { | |||
692 | diagnoseTypo(Corrected, | |||
693 | PDiag(IsTemplateName ? diag::err_no_template_suggest | |||
694 | : diag::err_unknown_typename_suggest) | |||
695 | << II, CanRecover); | |||
696 | } else if (DeclContext *DC = computeDeclContext(*SS, false)) { | |||
697 | std::string CorrectedStr(Corrected.getAsString(getLangOpts())); | |||
698 | bool DroppedSpecifier = Corrected.WillReplaceSpecifier() && | |||
699 | II->getName().equals(CorrectedStr); | |||
700 | diagnoseTypo(Corrected, | |||
701 | PDiag(IsTemplateName | |||
702 | ? diag::err_no_member_template_suggest | |||
703 | : diag::err_unknown_nested_typename_suggest) | |||
704 | << II << DC << DroppedSpecifier << SS->getRange(), | |||
705 | CanRecover); | |||
706 | } else { | |||
707 | llvm_unreachable("could not have corrected a typo here")::llvm::llvm_unreachable_internal("could not have corrected a typo here" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 707); | |||
708 | } | |||
709 | ||||
710 | if (!CanRecover) | |||
711 | return; | |||
712 | ||||
713 | CXXScopeSpec tmpSS; | |||
714 | if (Corrected.getCorrectionSpecifier()) | |||
715 | tmpSS.MakeTrivial(Context, Corrected.getCorrectionSpecifier(), | |||
716 | SourceRange(IILoc)); | |||
717 | // FIXME: Support class template argument deduction here. | |||
718 | SuggestedType = | |||
719 | getTypeName(*Corrected.getCorrectionAsIdentifierInfo(), IILoc, S, | |||
720 | tmpSS.isSet() ? &tmpSS : SS, false, false, nullptr, | |||
721 | /*IsCtorOrDtorName=*/false, | |||
722 | /*WantNontrivialTypeSourceInfo=*/true); | |||
723 | } | |||
724 | return; | |||
725 | } | |||
726 | ||||
727 | if (getLangOpts().CPlusPlus && !IsTemplateName) { | |||
728 | // See if II is a class template that the user forgot to pass arguments to. | |||
729 | UnqualifiedId Name; | |||
730 | Name.setIdentifier(II, IILoc); | |||
731 | CXXScopeSpec EmptySS; | |||
732 | TemplateTy TemplateResult; | |||
733 | bool MemberOfUnknownSpecialization; | |||
734 | if (isTemplateName(S, SS ? *SS : EmptySS, /*hasTemplateKeyword=*/false, | |||
735 | Name, nullptr, true, TemplateResult, | |||
736 | MemberOfUnknownSpecialization) == TNK_Type_template) { | |||
737 | diagnoseMissingTemplateArguments(TemplateResult.get(), IILoc); | |||
738 | return; | |||
739 | } | |||
740 | } | |||
741 | ||||
742 | // FIXME: Should we move the logic that tries to recover from a missing tag | |||
743 | // (struct, union, enum) from Parser::ParseImplicitInt here, instead? | |||
744 | ||||
745 | if (!SS || (!SS->isSet() && !SS->isInvalid())) | |||
746 | Diag(IILoc, IsTemplateName ? diag::err_no_template | |||
747 | : diag::err_unknown_typename) | |||
748 | << II; | |||
749 | else if (DeclContext *DC = computeDeclContext(*SS, false)) | |||
750 | Diag(IILoc, IsTemplateName ? diag::err_no_member_template | |||
751 | : diag::err_typename_nested_not_found) | |||
752 | << II << DC << SS->getRange(); | |||
753 | else if (SS->isValid() && SS->getScopeRep()->containsErrors()) { | |||
754 | SuggestedType = | |||
755 | ActOnTypenameType(S, SourceLocation(), *SS, *II, IILoc).get(); | |||
756 | } else if (isDependentScopeSpecifier(*SS)) { | |||
757 | unsigned DiagID = diag::err_typename_missing; | |||
758 | if (getLangOpts().MSVCCompat && isMicrosoftMissingTypename(SS, S)) | |||
759 | DiagID = diag::ext_typename_missing; | |||
760 | ||||
761 | Diag(SS->getRange().getBegin(), DiagID) | |||
762 | << SS->getScopeRep() << II->getName() | |||
763 | << SourceRange(SS->getRange().getBegin(), IILoc) | |||
764 | << FixItHint::CreateInsertion(SS->getRange().getBegin(), "typename "); | |||
765 | SuggestedType = ActOnTypenameType(S, SourceLocation(), | |||
766 | *SS, *II, IILoc).get(); | |||
767 | } else { | |||
768 | assert(SS && SS->isInvalid() &&((SS && SS->isInvalid() && "Invalid scope specifier has already been diagnosed" ) ? static_cast<void> (0) : __assert_fail ("SS && SS->isInvalid() && \"Invalid scope specifier has already been diagnosed\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 769, __PRETTY_FUNCTION__)) | |||
769 | "Invalid scope specifier has already been diagnosed")((SS && SS->isInvalid() && "Invalid scope specifier has already been diagnosed" ) ? static_cast<void> (0) : __assert_fail ("SS && SS->isInvalid() && \"Invalid scope specifier has already been diagnosed\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 769, __PRETTY_FUNCTION__)); | |||
770 | } | |||
771 | } | |||
772 | ||||
773 | /// Determine whether the given result set contains either a type name | |||
774 | /// or | |||
775 | static bool isResultTypeOrTemplate(LookupResult &R, const Token &NextToken) { | |||
776 | bool CheckTemplate = R.getSema().getLangOpts().CPlusPlus && | |||
777 | NextToken.is(tok::less); | |||
778 | ||||
779 | for (LookupResult::iterator I = R.begin(), IEnd = R.end(); I != IEnd; ++I) { | |||
780 | if (isa<TypeDecl>(*I) || isa<ObjCInterfaceDecl>(*I)) | |||
781 | return true; | |||
782 | ||||
783 | if (CheckTemplate && isa<TemplateDecl>(*I)) | |||
784 | return true; | |||
785 | } | |||
786 | ||||
787 | return false; | |||
788 | } | |||
789 | ||||
790 | static bool isTagTypeWithMissingTag(Sema &SemaRef, LookupResult &Result, | |||
791 | Scope *S, CXXScopeSpec &SS, | |||
792 | IdentifierInfo *&Name, | |||
793 | SourceLocation NameLoc) { | |||
794 | LookupResult R(SemaRef, Name, NameLoc, Sema::LookupTagName); | |||
795 | SemaRef.LookupParsedName(R, S, &SS); | |||
796 | if (TagDecl *Tag = R.getAsSingle<TagDecl>()) { | |||
797 | StringRef FixItTagName; | |||
798 | switch (Tag->getTagKind()) { | |||
799 | case TTK_Class: | |||
800 | FixItTagName = "class "; | |||
801 | break; | |||
802 | ||||
803 | case TTK_Enum: | |||
804 | FixItTagName = "enum "; | |||
805 | break; | |||
806 | ||||
807 | case TTK_Struct: | |||
808 | FixItTagName = "struct "; | |||
809 | break; | |||
810 | ||||
811 | case TTK_Interface: | |||
812 | FixItTagName = "__interface "; | |||
813 | break; | |||
814 | ||||
815 | case TTK_Union: | |||
816 | FixItTagName = "union "; | |||
817 | break; | |||
818 | } | |||
819 | ||||
820 | StringRef TagName = FixItTagName.drop_back(); | |||
821 | SemaRef.Diag(NameLoc, diag::err_use_of_tag_name_without_tag) | |||
822 | << Name << TagName << SemaRef.getLangOpts().CPlusPlus | |||
823 | << FixItHint::CreateInsertion(NameLoc, FixItTagName); | |||
824 | ||||
825 | for (LookupResult::iterator I = Result.begin(), IEnd = Result.end(); | |||
826 | I != IEnd; ++I) | |||
827 | SemaRef.Diag((*I)->getLocation(), diag::note_decl_hiding_tag_type) | |||
828 | << Name << TagName; | |||
829 | ||||
830 | // Replace lookup results with just the tag decl. | |||
831 | Result.clear(Sema::LookupTagName); | |||
832 | SemaRef.LookupParsedName(Result, S, &SS); | |||
833 | return true; | |||
834 | } | |||
835 | ||||
836 | return false; | |||
837 | } | |||
838 | ||||
839 | /// Build a ParsedType for a simple-type-specifier with a nested-name-specifier. | |||
840 | static ParsedType buildNestedType(Sema &S, CXXScopeSpec &SS, | |||
841 | QualType T, SourceLocation NameLoc) { | |||
842 | ASTContext &Context = S.Context; | |||
843 | ||||
844 | TypeLocBuilder Builder; | |||
845 | Builder.pushTypeSpec(T).setNameLoc(NameLoc); | |||
846 | ||||
847 | T = S.getElaboratedType(ETK_None, SS, T); | |||
848 | ElaboratedTypeLoc ElabTL = Builder.push<ElaboratedTypeLoc>(T); | |||
849 | ElabTL.setElaboratedKeywordLoc(SourceLocation()); | |||
850 | ElabTL.setQualifierLoc(SS.getWithLocInContext(Context)); | |||
851 | return S.CreateParsedType(T, Builder.getTypeSourceInfo(Context, T)); | |||
852 | } | |||
853 | ||||
854 | Sema::NameClassification Sema::ClassifyName(Scope *S, CXXScopeSpec &SS, | |||
855 | IdentifierInfo *&Name, | |||
856 | SourceLocation NameLoc, | |||
857 | const Token &NextToken, | |||
858 | CorrectionCandidateCallback *CCC) { | |||
859 | DeclarationNameInfo NameInfo(Name, NameLoc); | |||
860 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | |||
861 | ||||
862 | assert(NextToken.isNot(tok::coloncolon) &&((NextToken.isNot(tok::coloncolon) && "parse nested name specifiers before calling ClassifyName" ) ? static_cast<void> (0) : __assert_fail ("NextToken.isNot(tok::coloncolon) && \"parse nested name specifiers before calling ClassifyName\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 863, __PRETTY_FUNCTION__)) | |||
863 | "parse nested name specifiers before calling ClassifyName")((NextToken.isNot(tok::coloncolon) && "parse nested name specifiers before calling ClassifyName" ) ? static_cast<void> (0) : __assert_fail ("NextToken.isNot(tok::coloncolon) && \"parse nested name specifiers before calling ClassifyName\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 863, __PRETTY_FUNCTION__)); | |||
864 | if (getLangOpts().CPlusPlus && SS.isSet() && | |||
865 | isCurrentClassName(*Name, S, &SS)) { | |||
866 | // Per [class.qual]p2, this names the constructors of SS, not the | |||
867 | // injected-class-name. We don't have a classification for that. | |||
868 | // There's not much point caching this result, since the parser | |||
869 | // will reject it later. | |||
870 | return NameClassification::Unknown(); | |||
871 | } | |||
872 | ||||
873 | LookupResult Result(*this, Name, NameLoc, LookupOrdinaryName); | |||
874 | LookupParsedName(Result, S, &SS, !CurMethod); | |||
875 | ||||
876 | if (SS.isInvalid()) | |||
877 | return NameClassification::Error(); | |||
878 | ||||
879 | // For unqualified lookup in a class template in MSVC mode, look into | |||
880 | // dependent base classes where the primary class template is known. | |||
881 | if (Result.empty() && SS.isEmpty() && getLangOpts().MSVCCompat) { | |||
882 | if (ParsedType TypeInBase = | |||
883 | recoverFromTypeInKnownDependentBase(*this, *Name, NameLoc)) | |||
884 | return TypeInBase; | |||
885 | } | |||
886 | ||||
887 | // Perform lookup for Objective-C instance variables (including automatically | |||
888 | // synthesized instance variables), if we're in an Objective-C method. | |||
889 | // FIXME: This lookup really, really needs to be folded in to the normal | |||
890 | // unqualified lookup mechanism. | |||
891 | if (SS.isEmpty() && CurMethod && !isResultTypeOrTemplate(Result, NextToken)) { | |||
892 | DeclResult Ivar = LookupIvarInObjCMethod(Result, S, Name); | |||
893 | if (Ivar.isInvalid()) | |||
894 | return NameClassification::Error(); | |||
895 | if (Ivar.isUsable()) | |||
896 | return NameClassification::NonType(cast<NamedDecl>(Ivar.get())); | |||
897 | ||||
898 | // We defer builtin creation until after ivar lookup inside ObjC methods. | |||
899 | if (Result.empty()) | |||
900 | LookupBuiltin(Result); | |||
901 | } | |||
902 | ||||
903 | bool SecondTry = false; | |||
904 | bool IsFilteredTemplateName = false; | |||
905 | ||||
906 | Corrected: | |||
907 | switch (Result.getResultKind()) { | |||
908 | case LookupResult::NotFound: | |||
909 | // If an unqualified-id is followed by a '(', then we have a function | |||
910 | // call. | |||
911 | if (SS.isEmpty() && NextToken.is(tok::l_paren)) { | |||
912 | // In C++, this is an ADL-only call. | |||
913 | // FIXME: Reference? | |||
914 | if (getLangOpts().CPlusPlus) | |||
915 | return NameClassification::UndeclaredNonType(); | |||
916 | ||||
917 | // C90 6.3.2.2: | |||
918 | // If the expression that precedes the parenthesized argument list in a | |||
919 | // function call consists solely of an identifier, and if no | |||
920 | // declaration is visible for this identifier, the identifier is | |||
921 | // implicitly declared exactly as if, in the innermost block containing | |||
922 | // the function call, the declaration | |||
923 | // | |||
924 | // extern int identifier (); | |||
925 | // | |||
926 | // appeared. | |||
927 | // | |||
928 | // We also allow this in C99 as an extension. | |||
929 | if (NamedDecl *D = ImplicitlyDefineFunction(NameLoc, *Name, S)) | |||
930 | return NameClassification::NonType(D); | |||
931 | } | |||
932 | ||||
933 | if (getLangOpts().CPlusPlus20 && SS.isEmpty() && NextToken.is(tok::less)) { | |||
934 | // In C++20 onwards, this could be an ADL-only call to a function | |||
935 | // template, and we're required to assume that this is a template name. | |||
936 | // | |||
937 | // FIXME: Find a way to still do typo correction in this case. | |||
938 | TemplateName Template = | |||
939 | Context.getAssumedTemplateName(NameInfo.getName()); | |||
940 | return NameClassification::UndeclaredTemplate(Template); | |||
941 | } | |||
942 | ||||
943 | // In C, we first see whether there is a tag type by the same name, in | |||
944 | // which case it's likely that the user just forgot to write "enum", | |||
945 | // "struct", or "union". | |||
946 | if (!getLangOpts().CPlusPlus && !SecondTry && | |||
947 | isTagTypeWithMissingTag(*this, Result, S, SS, Name, NameLoc)) { | |||
948 | break; | |||
949 | } | |||
950 | ||||
951 | // Perform typo correction to determine if there is another name that is | |||
952 | // close to this name. | |||
953 | if (!SecondTry && CCC) { | |||
954 | SecondTry = true; | |||
955 | if (TypoCorrection Corrected = | |||
956 | CorrectTypo(Result.getLookupNameInfo(), Result.getLookupKind(), S, | |||
957 | &SS, *CCC, CTK_ErrorRecovery)) { | |||
958 | unsigned UnqualifiedDiag = diag::err_undeclared_var_use_suggest; | |||
959 | unsigned QualifiedDiag = diag::err_no_member_suggest; | |||
960 | ||||
961 | NamedDecl *FirstDecl = Corrected.getFoundDecl(); | |||
962 | NamedDecl *UnderlyingFirstDecl = Corrected.getCorrectionDecl(); | |||
963 | if (getLangOpts().CPlusPlus && NextToken.is(tok::less) && | |||
964 | UnderlyingFirstDecl && isa<TemplateDecl>(UnderlyingFirstDecl)) { | |||
965 | UnqualifiedDiag = diag::err_no_template_suggest; | |||
966 | QualifiedDiag = diag::err_no_member_template_suggest; | |||
967 | } else if (UnderlyingFirstDecl && | |||
968 | (isa<TypeDecl>(UnderlyingFirstDecl) || | |||
969 | isa<ObjCInterfaceDecl>(UnderlyingFirstDecl) || | |||
970 | isa<ObjCCompatibleAliasDecl>(UnderlyingFirstDecl))) { | |||
971 | UnqualifiedDiag = diag::err_unknown_typename_suggest; | |||
972 | QualifiedDiag = diag::err_unknown_nested_typename_suggest; | |||
973 | } | |||
974 | ||||
975 | if (SS.isEmpty()) { | |||
976 | diagnoseTypo(Corrected, PDiag(UnqualifiedDiag) << Name); | |||
977 | } else {// FIXME: is this even reachable? Test it. | |||
978 | std::string CorrectedStr(Corrected.getAsString(getLangOpts())); | |||
979 | bool DroppedSpecifier = Corrected.WillReplaceSpecifier() && | |||
980 | Name->getName().equals(CorrectedStr); | |||
981 | diagnoseTypo(Corrected, PDiag(QualifiedDiag) | |||
982 | << Name << computeDeclContext(SS, false) | |||
983 | << DroppedSpecifier << SS.getRange()); | |||
984 | } | |||
985 | ||||
986 | // Update the name, so that the caller has the new name. | |||
987 | Name = Corrected.getCorrectionAsIdentifierInfo(); | |||
988 | ||||
989 | // Typo correction corrected to a keyword. | |||
990 | if (Corrected.isKeyword()) | |||
991 | return Name; | |||
992 | ||||
993 | // Also update the LookupResult... | |||
994 | // FIXME: This should probably go away at some point | |||
995 | Result.clear(); | |||
996 | Result.setLookupName(Corrected.getCorrection()); | |||
997 | if (FirstDecl) | |||
998 | Result.addDecl(FirstDecl); | |||
999 | ||||
1000 | // If we found an Objective-C instance variable, let | |||
1001 | // LookupInObjCMethod build the appropriate expression to | |||
1002 | // reference the ivar. | |||
1003 | // FIXME: This is a gross hack. | |||
1004 | if (ObjCIvarDecl *Ivar = Result.getAsSingle<ObjCIvarDecl>()) { | |||
1005 | DeclResult R = | |||
1006 | LookupIvarInObjCMethod(Result, S, Ivar->getIdentifier()); | |||
1007 | if (R.isInvalid()) | |||
1008 | return NameClassification::Error(); | |||
1009 | if (R.isUsable()) | |||
1010 | return NameClassification::NonType(Ivar); | |||
1011 | } | |||
1012 | ||||
1013 | goto Corrected; | |||
1014 | } | |||
1015 | } | |||
1016 | ||||
1017 | // We failed to correct; just fall through and let the parser deal with it. | |||
1018 | Result.suppressDiagnostics(); | |||
1019 | return NameClassification::Unknown(); | |||
1020 | ||||
1021 | case LookupResult::NotFoundInCurrentInstantiation: { | |||
1022 | // We performed name lookup into the current instantiation, and there were | |||
1023 | // dependent bases, so we treat this result the same way as any other | |||
1024 | // dependent nested-name-specifier. | |||
1025 | ||||
1026 | // C++ [temp.res]p2: | |||
1027 | // A name used in a template declaration or definition and that is | |||
1028 | // dependent on a template-parameter is assumed not to name a type | |||
1029 | // unless the applicable name lookup finds a type name or the name is | |||
1030 | // qualified by the keyword typename. | |||
1031 | // | |||
1032 | // FIXME: If the next token is '<', we might want to ask the parser to | |||
1033 | // perform some heroics to see if we actually have a | |||
1034 | // template-argument-list, which would indicate a missing 'template' | |||
1035 | // keyword here. | |||
1036 | return NameClassification::DependentNonType(); | |||
1037 | } | |||
1038 | ||||
1039 | case LookupResult::Found: | |||
1040 | case LookupResult::FoundOverloaded: | |||
1041 | case LookupResult::FoundUnresolvedValue: | |||
1042 | break; | |||
1043 | ||||
1044 | case LookupResult::Ambiguous: | |||
1045 | if (getLangOpts().CPlusPlus && NextToken.is(tok::less) && | |||
1046 | hasAnyAcceptableTemplateNames(Result, /*AllowFunctionTemplates=*/true, | |||
1047 | /*AllowDependent=*/false)) { | |||
1048 | // C++ [temp.local]p3: | |||
1049 | // A lookup that finds an injected-class-name (10.2) can result in an | |||
1050 | // ambiguity in certain cases (for example, if it is found in more than | |||
1051 | // one base class). If all of the injected-class-names that are found | |||
1052 | // refer to specializations of the same class template, and if the name | |||
1053 | // is followed by a template-argument-list, the reference refers to the | |||
1054 | // class template itself and not a specialization thereof, and is not | |||
1055 | // ambiguous. | |||
1056 | // | |||
1057 | // This filtering can make an ambiguous result into an unambiguous one, | |||
1058 | // so try again after filtering out template names. | |||
1059 | FilterAcceptableTemplateNames(Result); | |||
1060 | if (!Result.isAmbiguous()) { | |||
1061 | IsFilteredTemplateName = true; | |||
1062 | break; | |||
1063 | } | |||
1064 | } | |||
1065 | ||||
1066 | // Diagnose the ambiguity and return an error. | |||
1067 | return NameClassification::Error(); | |||
1068 | } | |||
1069 | ||||
1070 | if (getLangOpts().CPlusPlus && NextToken.is(tok::less) && | |||
1071 | (IsFilteredTemplateName || | |||
1072 | hasAnyAcceptableTemplateNames( | |||
1073 | Result, /*AllowFunctionTemplates=*/true, | |||
1074 | /*AllowDependent=*/false, | |||
1075 | /*AllowNonTemplateFunctions*/ SS.isEmpty() && | |||
1076 | getLangOpts().CPlusPlus20))) { | |||
1077 | // C++ [temp.names]p3: | |||
1078 | // After name lookup (3.4) finds that a name is a template-name or that | |||
1079 | // an operator-function-id or a literal- operator-id refers to a set of | |||
1080 | // overloaded functions any member of which is a function template if | |||
1081 | // this is followed by a <, the < is always taken as the delimiter of a | |||
1082 | // template-argument-list and never as the less-than operator. | |||
1083 | // C++2a [temp.names]p2: | |||
1084 | // A name is also considered to refer to a template if it is an | |||
1085 | // unqualified-id followed by a < and name lookup finds either one | |||
1086 | // or more functions or finds nothing. | |||
1087 | if (!IsFilteredTemplateName) | |||
1088 | FilterAcceptableTemplateNames(Result); | |||
1089 | ||||
1090 | bool IsFunctionTemplate; | |||
1091 | bool IsVarTemplate; | |||
1092 | TemplateName Template; | |||
1093 | if (Result.end() - Result.begin() > 1) { | |||
1094 | IsFunctionTemplate = true; | |||
1095 | Template = Context.getOverloadedTemplateName(Result.begin(), | |||
1096 | Result.end()); | |||
1097 | } else if (!Result.empty()) { | |||
1098 | auto *TD = cast<TemplateDecl>(getAsTemplateNameDecl( | |||
1099 | *Result.begin(), /*AllowFunctionTemplates=*/true, | |||
1100 | /*AllowDependent=*/false)); | |||
1101 | IsFunctionTemplate = isa<FunctionTemplateDecl>(TD); | |||
1102 | IsVarTemplate = isa<VarTemplateDecl>(TD); | |||
1103 | ||||
1104 | if (SS.isNotEmpty()) | |||
1105 | Template = | |||
1106 | Context.getQualifiedTemplateName(SS.getScopeRep(), | |||
1107 | /*TemplateKeyword=*/false, TD); | |||
1108 | else | |||
1109 | Template = TemplateName(TD); | |||
1110 | } else { | |||
1111 | // All results were non-template functions. This is a function template | |||
1112 | // name. | |||
1113 | IsFunctionTemplate = true; | |||
1114 | Template = Context.getAssumedTemplateName(NameInfo.getName()); | |||
1115 | } | |||
1116 | ||||
1117 | if (IsFunctionTemplate) { | |||
1118 | // Function templates always go through overload resolution, at which | |||
1119 | // point we'll perform the various checks (e.g., accessibility) we need | |||
1120 | // to based on which function we selected. | |||
1121 | Result.suppressDiagnostics(); | |||
1122 | ||||
1123 | return NameClassification::FunctionTemplate(Template); | |||
1124 | } | |||
1125 | ||||
1126 | return IsVarTemplate ? NameClassification::VarTemplate(Template) | |||
1127 | : NameClassification::TypeTemplate(Template); | |||
1128 | } | |||
1129 | ||||
1130 | NamedDecl *FirstDecl = (*Result.begin())->getUnderlyingDecl(); | |||
1131 | if (TypeDecl *Type = dyn_cast<TypeDecl>(FirstDecl)) { | |||
1132 | DiagnoseUseOfDecl(Type, NameLoc); | |||
1133 | MarkAnyDeclReferenced(Type->getLocation(), Type, /*OdrUse=*/false); | |||
1134 | QualType T = Context.getTypeDeclType(Type); | |||
1135 | if (SS.isNotEmpty()) | |||
1136 | return buildNestedType(*this, SS, T, NameLoc); | |||
1137 | return ParsedType::make(T); | |||
1138 | } | |||
1139 | ||||
1140 | ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(FirstDecl); | |||
1141 | if (!Class) { | |||
1142 | // FIXME: It's unfortunate that we don't have a Type node for handling this. | |||
1143 | if (ObjCCompatibleAliasDecl *Alias = | |||
1144 | dyn_cast<ObjCCompatibleAliasDecl>(FirstDecl)) | |||
1145 | Class = Alias->getClassInterface(); | |||
1146 | } | |||
1147 | ||||
1148 | if (Class) { | |||
1149 | DiagnoseUseOfDecl(Class, NameLoc); | |||
1150 | ||||
1151 | if (NextToken.is(tok::period)) { | |||
1152 | // Interface. <something> is parsed as a property reference expression. | |||
1153 | // Just return "unknown" as a fall-through for now. | |||
1154 | Result.suppressDiagnostics(); | |||
1155 | return NameClassification::Unknown(); | |||
1156 | } | |||
1157 | ||||
1158 | QualType T = Context.getObjCInterfaceType(Class); | |||
1159 | return ParsedType::make(T); | |||
1160 | } | |||
1161 | ||||
1162 | if (isa<ConceptDecl>(FirstDecl)) | |||
1163 | return NameClassification::Concept( | |||
1164 | TemplateName(cast<TemplateDecl>(FirstDecl))); | |||
1165 | ||||
1166 | // We can have a type template here if we're classifying a template argument. | |||
1167 | if (isa<TemplateDecl>(FirstDecl) && !isa<FunctionTemplateDecl>(FirstDecl) && | |||
1168 | !isa<VarTemplateDecl>(FirstDecl)) | |||
1169 | return NameClassification::TypeTemplate( | |||
1170 | TemplateName(cast<TemplateDecl>(FirstDecl))); | |||
1171 | ||||
1172 | // Check for a tag type hidden by a non-type decl in a few cases where it | |||
1173 | // seems likely a type is wanted instead of the non-type that was found. | |||
1174 | bool NextIsOp = NextToken.isOneOf(tok::amp, tok::star); | |||
1175 | if ((NextToken.is(tok::identifier) || | |||
1176 | (NextIsOp && | |||
1177 | FirstDecl->getUnderlyingDecl()->isFunctionOrFunctionTemplate())) && | |||
1178 | isTagTypeWithMissingTag(*this, Result, S, SS, Name, NameLoc)) { | |||
1179 | TypeDecl *Type = Result.getAsSingle<TypeDecl>(); | |||
1180 | DiagnoseUseOfDecl(Type, NameLoc); | |||
1181 | QualType T = Context.getTypeDeclType(Type); | |||
1182 | if (SS.isNotEmpty()) | |||
1183 | return buildNestedType(*this, SS, T, NameLoc); | |||
1184 | return ParsedType::make(T); | |||
1185 | } | |||
1186 | ||||
1187 | // If we already know which single declaration is referenced, just annotate | |||
1188 | // that declaration directly. Defer resolving even non-overloaded class | |||
1189 | // member accesses, as we need to defer certain access checks until we know | |||
1190 | // the context. | |||
1191 | bool ADL = UseArgumentDependentLookup(SS, Result, NextToken.is(tok::l_paren)); | |||
1192 | if (Result.isSingleResult() && !ADL && !FirstDecl->isCXXClassMember()) | |||
1193 | return NameClassification::NonType(Result.getRepresentativeDecl()); | |||
1194 | ||||
1195 | // Otherwise, this is an overload set that we will need to resolve later. | |||
1196 | Result.suppressDiagnostics(); | |||
1197 | return NameClassification::OverloadSet(UnresolvedLookupExpr::Create( | |||
1198 | Context, Result.getNamingClass(), SS.getWithLocInContext(Context), | |||
1199 | Result.getLookupNameInfo(), ADL, Result.isOverloadedResult(), | |||
1200 | Result.begin(), Result.end())); | |||
1201 | } | |||
1202 | ||||
1203 | ExprResult | |||
1204 | Sema::ActOnNameClassifiedAsUndeclaredNonType(IdentifierInfo *Name, | |||
1205 | SourceLocation NameLoc) { | |||
1206 | assert(getLangOpts().CPlusPlus && "ADL-only call in C?")((getLangOpts().CPlusPlus && "ADL-only call in C?") ? static_cast<void> (0) : __assert_fail ("getLangOpts().CPlusPlus && \"ADL-only call in C?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1206, __PRETTY_FUNCTION__)); | |||
1207 | CXXScopeSpec SS; | |||
1208 | LookupResult Result(*this, Name, NameLoc, LookupOrdinaryName); | |||
1209 | return BuildDeclarationNameExpr(SS, Result, /*ADL=*/true); | |||
1210 | } | |||
1211 | ||||
1212 | ExprResult | |||
1213 | Sema::ActOnNameClassifiedAsDependentNonType(const CXXScopeSpec &SS, | |||
1214 | IdentifierInfo *Name, | |||
1215 | SourceLocation NameLoc, | |||
1216 | bool IsAddressOfOperand) { | |||
1217 | DeclarationNameInfo NameInfo(Name, NameLoc); | |||
1218 | return ActOnDependentIdExpression(SS, /*TemplateKWLoc=*/SourceLocation(), | |||
1219 | NameInfo, IsAddressOfOperand, | |||
1220 | /*TemplateArgs=*/nullptr); | |||
1221 | } | |||
1222 | ||||
1223 | ExprResult Sema::ActOnNameClassifiedAsNonType(Scope *S, const CXXScopeSpec &SS, | |||
1224 | NamedDecl *Found, | |||
1225 | SourceLocation NameLoc, | |||
1226 | const Token &NextToken) { | |||
1227 | if (getCurMethodDecl() && SS.isEmpty()) | |||
1228 | if (auto *Ivar = dyn_cast<ObjCIvarDecl>(Found->getUnderlyingDecl())) | |||
1229 | return BuildIvarRefExpr(S, NameLoc, Ivar); | |||
1230 | ||||
1231 | // Reconstruct the lookup result. | |||
1232 | LookupResult Result(*this, Found->getDeclName(), NameLoc, LookupOrdinaryName); | |||
1233 | Result.addDecl(Found); | |||
1234 | Result.resolveKind(); | |||
1235 | ||||
1236 | bool ADL = UseArgumentDependentLookup(SS, Result, NextToken.is(tok::l_paren)); | |||
1237 | return BuildDeclarationNameExpr(SS, Result, ADL); | |||
1238 | } | |||
1239 | ||||
1240 | ExprResult Sema::ActOnNameClassifiedAsOverloadSet(Scope *S, Expr *E) { | |||
1241 | // For an implicit class member access, transform the result into a member | |||
1242 | // access expression if necessary. | |||
1243 | auto *ULE = cast<UnresolvedLookupExpr>(E); | |||
1244 | if ((*ULE->decls_begin())->isCXXClassMember()) { | |||
1245 | CXXScopeSpec SS; | |||
1246 | SS.Adopt(ULE->getQualifierLoc()); | |||
1247 | ||||
1248 | // Reconstruct the lookup result. | |||
1249 | LookupResult Result(*this, ULE->getName(), ULE->getNameLoc(), | |||
1250 | LookupOrdinaryName); | |||
1251 | Result.setNamingClass(ULE->getNamingClass()); | |||
1252 | for (auto I = ULE->decls_begin(), E = ULE->decls_end(); I != E; ++I) | |||
1253 | Result.addDecl(*I, I.getAccess()); | |||
1254 | Result.resolveKind(); | |||
1255 | return BuildPossibleImplicitMemberExpr(SS, SourceLocation(), Result, | |||
1256 | nullptr, S); | |||
1257 | } | |||
1258 | ||||
1259 | // Otherwise, this is already in the form we needed, and no further checks | |||
1260 | // are necessary. | |||
1261 | return ULE; | |||
1262 | } | |||
1263 | ||||
1264 | Sema::TemplateNameKindForDiagnostics | |||
1265 | Sema::getTemplateNameKindForDiagnostics(TemplateName Name) { | |||
1266 | auto *TD = Name.getAsTemplateDecl(); | |||
1267 | if (!TD) | |||
1268 | return TemplateNameKindForDiagnostics::DependentTemplate; | |||
1269 | if (isa<ClassTemplateDecl>(TD)) | |||
1270 | return TemplateNameKindForDiagnostics::ClassTemplate; | |||
1271 | if (isa<FunctionTemplateDecl>(TD)) | |||
1272 | return TemplateNameKindForDiagnostics::FunctionTemplate; | |||
1273 | if (isa<VarTemplateDecl>(TD)) | |||
1274 | return TemplateNameKindForDiagnostics::VarTemplate; | |||
1275 | if (isa<TypeAliasTemplateDecl>(TD)) | |||
1276 | return TemplateNameKindForDiagnostics::AliasTemplate; | |||
1277 | if (isa<TemplateTemplateParmDecl>(TD)) | |||
1278 | return TemplateNameKindForDiagnostics::TemplateTemplateParam; | |||
1279 | if (isa<ConceptDecl>(TD)) | |||
1280 | return TemplateNameKindForDiagnostics::Concept; | |||
1281 | return TemplateNameKindForDiagnostics::DependentTemplate; | |||
1282 | } | |||
1283 | ||||
1284 | void Sema::PushDeclContext(Scope *S, DeclContext *DC) { | |||
1285 | assert(DC->getLexicalParent() == CurContext &&((DC->getLexicalParent() == CurContext && "The next DeclContext should be lexically contained in the current one." ) ? static_cast<void> (0) : __assert_fail ("DC->getLexicalParent() == CurContext && \"The next DeclContext should be lexically contained in the current one.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1286, __PRETTY_FUNCTION__)) | |||
1286 | "The next DeclContext should be lexically contained in the current one.")((DC->getLexicalParent() == CurContext && "The next DeclContext should be lexically contained in the current one." ) ? static_cast<void> (0) : __assert_fail ("DC->getLexicalParent() == CurContext && \"The next DeclContext should be lexically contained in the current one.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1286, __PRETTY_FUNCTION__)); | |||
1287 | CurContext = DC; | |||
1288 | S->setEntity(DC); | |||
1289 | } | |||
1290 | ||||
1291 | void Sema::PopDeclContext() { | |||
1292 | assert(CurContext && "DeclContext imbalance!")((CurContext && "DeclContext imbalance!") ? static_cast <void> (0) : __assert_fail ("CurContext && \"DeclContext imbalance!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1292, __PRETTY_FUNCTION__)); | |||
1293 | ||||
1294 | CurContext = CurContext->getLexicalParent(); | |||
1295 | assert(CurContext && "Popped translation unit!")((CurContext && "Popped translation unit!") ? static_cast <void> (0) : __assert_fail ("CurContext && \"Popped translation unit!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1295, __PRETTY_FUNCTION__)); | |||
1296 | } | |||
1297 | ||||
1298 | Sema::SkippedDefinitionContext Sema::ActOnTagStartSkippedDefinition(Scope *S, | |||
1299 | Decl *D) { | |||
1300 | // Unlike PushDeclContext, the context to which we return is not necessarily | |||
1301 | // the containing DC of TD, because the new context will be some pre-existing | |||
1302 | // TagDecl definition instead of a fresh one. | |||
1303 | auto Result = static_cast<SkippedDefinitionContext>(CurContext); | |||
1304 | CurContext = cast<TagDecl>(D)->getDefinition(); | |||
1305 | assert(CurContext && "skipping definition of undefined tag")((CurContext && "skipping definition of undefined tag" ) ? static_cast<void> (0) : __assert_fail ("CurContext && \"skipping definition of undefined tag\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1305, __PRETTY_FUNCTION__)); | |||
1306 | // Start lookups from the parent of the current context; we don't want to look | |||
1307 | // into the pre-existing complete definition. | |||
1308 | S->setEntity(CurContext->getLookupParent()); | |||
1309 | return Result; | |||
1310 | } | |||
1311 | ||||
1312 | void Sema::ActOnTagFinishSkippedDefinition(SkippedDefinitionContext Context) { | |||
1313 | CurContext = static_cast<decltype(CurContext)>(Context); | |||
1314 | } | |||
1315 | ||||
1316 | /// EnterDeclaratorContext - Used when we must lookup names in the context | |||
1317 | /// of a declarator's nested name specifier. | |||
1318 | /// | |||
1319 | void Sema::EnterDeclaratorContext(Scope *S, DeclContext *DC) { | |||
1320 | // C++0x [basic.lookup.unqual]p13: | |||
1321 | // A name used in the definition of a static data member of class | |||
1322 | // X (after the qualified-id of the static member) is looked up as | |||
1323 | // if the name was used in a member function of X. | |||
1324 | // C++0x [basic.lookup.unqual]p14: | |||
1325 | // If a variable member of a namespace is defined outside of the | |||
1326 | // scope of its namespace then any name used in the definition of | |||
1327 | // the variable member (after the declarator-id) is looked up as | |||
1328 | // if the definition of the variable member occurred in its | |||
1329 | // namespace. | |||
1330 | // Both of these imply that we should push a scope whose context | |||
1331 | // is the semantic context of the declaration. We can't use | |||
1332 | // PushDeclContext here because that context is not necessarily | |||
1333 | // lexically contained in the current context. Fortunately, | |||
1334 | // the containing scope should have the appropriate information. | |||
1335 | ||||
1336 | assert(!S->getEntity() && "scope already has entity")((!S->getEntity() && "scope already has entity") ? static_cast<void> (0) : __assert_fail ("!S->getEntity() && \"scope already has entity\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1336, __PRETTY_FUNCTION__)); | |||
1337 | ||||
1338 | #ifndef NDEBUG | |||
1339 | Scope *Ancestor = S->getParent(); | |||
1340 | while (!Ancestor->getEntity()) Ancestor = Ancestor->getParent(); | |||
1341 | assert(Ancestor->getEntity() == CurContext && "ancestor context mismatch")((Ancestor->getEntity() == CurContext && "ancestor context mismatch" ) ? static_cast<void> (0) : __assert_fail ("Ancestor->getEntity() == CurContext && \"ancestor context mismatch\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1341, __PRETTY_FUNCTION__)); | |||
1342 | #endif | |||
1343 | ||||
1344 | CurContext = DC; | |||
1345 | S->setEntity(DC); | |||
1346 | ||||
1347 | if (S->getParent()->isTemplateParamScope()) { | |||
1348 | // Also set the corresponding entities for all immediately-enclosing | |||
1349 | // template parameter scopes. | |||
1350 | EnterTemplatedContext(S->getParent(), DC); | |||
1351 | } | |||
1352 | } | |||
1353 | ||||
1354 | void Sema::ExitDeclaratorContext(Scope *S) { | |||
1355 | assert(S->getEntity() == CurContext && "Context imbalance!")((S->getEntity() == CurContext && "Context imbalance!" ) ? static_cast<void> (0) : __assert_fail ("S->getEntity() == CurContext && \"Context imbalance!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1355, __PRETTY_FUNCTION__)); | |||
1356 | ||||
1357 | // Switch back to the lexical context. The safety of this is | |||
1358 | // enforced by an assert in EnterDeclaratorContext. | |||
1359 | Scope *Ancestor = S->getParent(); | |||
1360 | while (!Ancestor->getEntity()) Ancestor = Ancestor->getParent(); | |||
1361 | CurContext = Ancestor->getEntity(); | |||
1362 | ||||
1363 | // We don't need to do anything with the scope, which is going to | |||
1364 | // disappear. | |||
1365 | } | |||
1366 | ||||
1367 | void Sema::EnterTemplatedContext(Scope *S, DeclContext *DC) { | |||
1368 | assert(S->isTemplateParamScope() &&((S->isTemplateParamScope() && "expected to be initializing a template parameter scope" ) ? static_cast<void> (0) : __assert_fail ("S->isTemplateParamScope() && \"expected to be initializing a template parameter scope\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1369, __PRETTY_FUNCTION__)) | |||
1369 | "expected to be initializing a template parameter scope")((S->isTemplateParamScope() && "expected to be initializing a template parameter scope" ) ? static_cast<void> (0) : __assert_fail ("S->isTemplateParamScope() && \"expected to be initializing a template parameter scope\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1369, __PRETTY_FUNCTION__)); | |||
1370 | ||||
1371 | // C++20 [temp.local]p7: | |||
1372 | // In the definition of a member of a class template that appears outside | |||
1373 | // of the class template definition, the name of a member of the class | |||
1374 | // template hides the name of a template-parameter of any enclosing class | |||
1375 | // templates (but not a template-parameter of the member if the member is a | |||
1376 | // class or function template). | |||
1377 | // C++20 [temp.local]p9: | |||
1378 | // In the definition of a class template or in the definition of a member | |||
1379 | // of such a template that appears outside of the template definition, for | |||
1380 | // each non-dependent base class (13.8.2.1), if the name of the base class | |||
1381 | // or the name of a member of the base class is the same as the name of a | |||
1382 | // template-parameter, the base class name or member name hides the | |||
1383 | // template-parameter name (6.4.10). | |||
1384 | // | |||
1385 | // This means that a template parameter scope should be searched immediately | |||
1386 | // after searching the DeclContext for which it is a template parameter | |||
1387 | // scope. For example, for | |||
1388 | // template<typename T> template<typename U> template<typename V> | |||
1389 | // void N::A<T>::B<U>::f(...) | |||
1390 | // we search V then B<U> (and base classes) then U then A<T> (and base | |||
1391 | // classes) then T then N then ::. | |||
1392 | unsigned ScopeDepth = getTemplateDepth(S); | |||
1393 | for (; S && S->isTemplateParamScope(); S = S->getParent(), --ScopeDepth) { | |||
1394 | DeclContext *SearchDCAfterScope = DC; | |||
1395 | for (; DC; DC = DC->getLookupParent()) { | |||
1396 | if (const TemplateParameterList *TPL = | |||
1397 | cast<Decl>(DC)->getDescribedTemplateParams()) { | |||
1398 | unsigned DCDepth = TPL->getDepth() + 1; | |||
1399 | if (DCDepth > ScopeDepth) | |||
1400 | continue; | |||
1401 | if (ScopeDepth == DCDepth) | |||
1402 | SearchDCAfterScope = DC = DC->getLookupParent(); | |||
1403 | break; | |||
1404 | } | |||
1405 | } | |||
1406 | S->setLookupEntity(SearchDCAfterScope); | |||
1407 | } | |||
1408 | } | |||
1409 | ||||
1410 | void Sema::ActOnReenterFunctionContext(Scope* S, Decl *D) { | |||
1411 | // We assume that the caller has already called | |||
1412 | // ActOnReenterTemplateScope so getTemplatedDecl() works. | |||
1413 | FunctionDecl *FD = D->getAsFunction(); | |||
1414 | if (!FD) | |||
1415 | return; | |||
1416 | ||||
1417 | // Same implementation as PushDeclContext, but enters the context | |||
1418 | // from the lexical parent, rather than the top-level class. | |||
1419 | assert(CurContext == FD->getLexicalParent() &&((CurContext == FD->getLexicalParent() && "The next DeclContext should be lexically contained in the current one." ) ? static_cast<void> (0) : __assert_fail ("CurContext == FD->getLexicalParent() && \"The next DeclContext should be lexically contained in the current one.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1420, __PRETTY_FUNCTION__)) | |||
1420 | "The next DeclContext should be lexically contained in the current one.")((CurContext == FD->getLexicalParent() && "The next DeclContext should be lexically contained in the current one." ) ? static_cast<void> (0) : __assert_fail ("CurContext == FD->getLexicalParent() && \"The next DeclContext should be lexically contained in the current one.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1420, __PRETTY_FUNCTION__)); | |||
1421 | CurContext = FD; | |||
1422 | S->setEntity(CurContext); | |||
1423 | ||||
1424 | for (unsigned P = 0, NumParams = FD->getNumParams(); P < NumParams; ++P) { | |||
1425 | ParmVarDecl *Param = FD->getParamDecl(P); | |||
1426 | // If the parameter has an identifier, then add it to the scope | |||
1427 | if (Param->getIdentifier()) { | |||
1428 | S->AddDecl(Param); | |||
1429 | IdResolver.AddDecl(Param); | |||
1430 | } | |||
1431 | } | |||
1432 | } | |||
1433 | ||||
1434 | void Sema::ActOnExitFunctionContext() { | |||
1435 | // Same implementation as PopDeclContext, but returns to the lexical parent, | |||
1436 | // rather than the top-level class. | |||
1437 | assert(CurContext && "DeclContext imbalance!")((CurContext && "DeclContext imbalance!") ? static_cast <void> (0) : __assert_fail ("CurContext && \"DeclContext imbalance!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1437, __PRETTY_FUNCTION__)); | |||
1438 | CurContext = CurContext->getLexicalParent(); | |||
1439 | assert(CurContext && "Popped translation unit!")((CurContext && "Popped translation unit!") ? static_cast <void> (0) : __assert_fail ("CurContext && \"Popped translation unit!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1439, __PRETTY_FUNCTION__)); | |||
1440 | } | |||
1441 | ||||
1442 | /// Determine whether we allow overloading of the function | |||
1443 | /// PrevDecl with another declaration. | |||
1444 | /// | |||
1445 | /// This routine determines whether overloading is possible, not | |||
1446 | /// whether some new function is actually an overload. It will return | |||
1447 | /// true in C++ (where we can always provide overloads) or, as an | |||
1448 | /// extension, in C when the previous function is already an | |||
1449 | /// overloaded function declaration or has the "overloadable" | |||
1450 | /// attribute. | |||
1451 | static bool AllowOverloadingOfFunction(LookupResult &Previous, | |||
1452 | ASTContext &Context, | |||
1453 | const FunctionDecl *New) { | |||
1454 | if (Context.getLangOpts().CPlusPlus) | |||
1455 | return true; | |||
1456 | ||||
1457 | if (Previous.getResultKind() == LookupResult::FoundOverloaded) | |||
1458 | return true; | |||
1459 | ||||
1460 | return Previous.getResultKind() == LookupResult::Found && | |||
1461 | (Previous.getFoundDecl()->hasAttr<OverloadableAttr>() || | |||
1462 | New->hasAttr<OverloadableAttr>()); | |||
1463 | } | |||
1464 | ||||
1465 | /// Add this decl to the scope shadowed decl chains. | |||
1466 | void Sema::PushOnScopeChains(NamedDecl *D, Scope *S, bool AddToContext) { | |||
1467 | // Move up the scope chain until we find the nearest enclosing | |||
1468 | // non-transparent context. The declaration will be introduced into this | |||
1469 | // scope. | |||
1470 | while (S->getEntity() && S->getEntity()->isTransparentContext()) | |||
1471 | S = S->getParent(); | |||
1472 | ||||
1473 | // Add scoped declarations into their context, so that they can be | |||
1474 | // found later. Declarations without a context won't be inserted | |||
1475 | // into any context. | |||
1476 | if (AddToContext) | |||
1477 | CurContext->addDecl(D); | |||
1478 | ||||
1479 | // Out-of-line definitions shouldn't be pushed into scope in C++, unless they | |||
1480 | // are function-local declarations. | |||
1481 | if (getLangOpts().CPlusPlus && D->isOutOfLine() && !S->getFnParent()) | |||
1482 | return; | |||
1483 | ||||
1484 | // Template instantiations should also not be pushed into scope. | |||
1485 | if (isa<FunctionDecl>(D) && | |||
1486 | cast<FunctionDecl>(D)->isFunctionTemplateSpecialization()) | |||
1487 | return; | |||
1488 | ||||
1489 | // If this replaces anything in the current scope, | |||
1490 | IdentifierResolver::iterator I = IdResolver.begin(D->getDeclName()), | |||
1491 | IEnd = IdResolver.end(); | |||
1492 | for (; I != IEnd; ++I) { | |||
1493 | if (S->isDeclScope(*I) && D->declarationReplaces(*I)) { | |||
1494 | S->RemoveDecl(*I); | |||
1495 | IdResolver.RemoveDecl(*I); | |||
1496 | ||||
1497 | // Should only need to replace one decl. | |||
1498 | break; | |||
1499 | } | |||
1500 | } | |||
1501 | ||||
1502 | S->AddDecl(D); | |||
1503 | ||||
1504 | if (isa<LabelDecl>(D) && !cast<LabelDecl>(D)->isGnuLocal()) { | |||
1505 | // Implicitly-generated labels may end up getting generated in an order that | |||
1506 | // isn't strictly lexical, which breaks name lookup. Be careful to insert | |||
1507 | // the label at the appropriate place in the identifier chain. | |||
1508 | for (I = IdResolver.begin(D->getDeclName()); I != IEnd; ++I) { | |||
1509 | DeclContext *IDC = (*I)->getLexicalDeclContext()->getRedeclContext(); | |||
1510 | if (IDC == CurContext) { | |||
1511 | if (!S->isDeclScope(*I)) | |||
1512 | continue; | |||
1513 | } else if (IDC->Encloses(CurContext)) | |||
1514 | break; | |||
1515 | } | |||
1516 | ||||
1517 | IdResolver.InsertDeclAfter(I, D); | |||
1518 | } else { | |||
1519 | IdResolver.AddDecl(D); | |||
1520 | } | |||
1521 | } | |||
1522 | ||||
1523 | bool Sema::isDeclInScope(NamedDecl *D, DeclContext *Ctx, Scope *S, | |||
1524 | bool AllowInlineNamespace) { | |||
1525 | return IdResolver.isDeclInScope(D, Ctx, S, AllowInlineNamespace); | |||
1526 | } | |||
1527 | ||||
1528 | Scope *Sema::getScopeForDeclContext(Scope *S, DeclContext *DC) { | |||
1529 | DeclContext *TargetDC = DC->getPrimaryContext(); | |||
1530 | do { | |||
1531 | if (DeclContext *ScopeDC = S->getEntity()) | |||
1532 | if (ScopeDC->getPrimaryContext() == TargetDC) | |||
1533 | return S; | |||
1534 | } while ((S = S->getParent())); | |||
1535 | ||||
1536 | return nullptr; | |||
1537 | } | |||
1538 | ||||
1539 | static bool isOutOfScopePreviousDeclaration(NamedDecl *, | |||
1540 | DeclContext*, | |||
1541 | ASTContext&); | |||
1542 | ||||
1543 | /// Filters out lookup results that don't fall within the given scope | |||
1544 | /// as determined by isDeclInScope. | |||
1545 | void Sema::FilterLookupForScope(LookupResult &R, DeclContext *Ctx, Scope *S, | |||
1546 | bool ConsiderLinkage, | |||
1547 | bool AllowInlineNamespace) { | |||
1548 | LookupResult::Filter F = R.makeFilter(); | |||
1549 | while (F.hasNext()) { | |||
1550 | NamedDecl *D = F.next(); | |||
1551 | ||||
1552 | if (isDeclInScope(D, Ctx, S, AllowInlineNamespace)) | |||
1553 | continue; | |||
1554 | ||||
1555 | if (ConsiderLinkage && isOutOfScopePreviousDeclaration(D, Ctx, Context)) | |||
1556 | continue; | |||
1557 | ||||
1558 | F.erase(); | |||
1559 | } | |||
1560 | ||||
1561 | F.done(); | |||
1562 | } | |||
1563 | ||||
1564 | /// We've determined that \p New is a redeclaration of \p Old. Check that they | |||
1565 | /// have compatible owning modules. | |||
1566 | bool Sema::CheckRedeclarationModuleOwnership(NamedDecl *New, NamedDecl *Old) { | |||
1567 | // FIXME: The Modules TS is not clear about how friend declarations are | |||
1568 | // to be treated. It's not meaningful to have different owning modules for | |||
1569 | // linkage in redeclarations of the same entity, so for now allow the | |||
1570 | // redeclaration and change the owning modules to match. | |||
1571 | if (New->getFriendObjectKind() && | |||
1572 | Old->getOwningModuleForLinkage() != New->getOwningModuleForLinkage()) { | |||
1573 | New->setLocalOwningModule(Old->getOwningModule()); | |||
1574 | makeMergedDefinitionVisible(New); | |||
1575 | return false; | |||
1576 | } | |||
1577 | ||||
1578 | Module *NewM = New->getOwningModule(); | |||
1579 | Module *OldM = Old->getOwningModule(); | |||
1580 | ||||
1581 | if (NewM && NewM->Kind == Module::PrivateModuleFragment) | |||
1582 | NewM = NewM->Parent; | |||
1583 | if (OldM && OldM->Kind == Module::PrivateModuleFragment) | |||
1584 | OldM = OldM->Parent; | |||
1585 | ||||
1586 | if (NewM == OldM) | |||
1587 | return false; | |||
1588 | ||||
1589 | bool NewIsModuleInterface = NewM && NewM->isModulePurview(); | |||
1590 | bool OldIsModuleInterface = OldM && OldM->isModulePurview(); | |||
1591 | if (NewIsModuleInterface || OldIsModuleInterface) { | |||
1592 | // C++ Modules TS [basic.def.odr] 6.2/6.7 [sic]: | |||
1593 | // if a declaration of D [...] appears in the purview of a module, all | |||
1594 | // other such declarations shall appear in the purview of the same module | |||
1595 | Diag(New->getLocation(), diag::err_mismatched_owning_module) | |||
1596 | << New | |||
1597 | << NewIsModuleInterface | |||
1598 | << (NewIsModuleInterface ? NewM->getFullModuleName() : "") | |||
1599 | << OldIsModuleInterface | |||
1600 | << (OldIsModuleInterface ? OldM->getFullModuleName() : ""); | |||
1601 | Diag(Old->getLocation(), diag::note_previous_declaration); | |||
1602 | New->setInvalidDecl(); | |||
1603 | return true; | |||
1604 | } | |||
1605 | ||||
1606 | return false; | |||
1607 | } | |||
1608 | ||||
1609 | static bool isUsingDecl(NamedDecl *D) { | |||
1610 | return isa<UsingShadowDecl>(D) || | |||
1611 | isa<UnresolvedUsingTypenameDecl>(D) || | |||
1612 | isa<UnresolvedUsingValueDecl>(D); | |||
1613 | } | |||
1614 | ||||
1615 | /// Removes using shadow declarations from the lookup results. | |||
1616 | static void RemoveUsingDecls(LookupResult &R) { | |||
1617 | LookupResult::Filter F = R.makeFilter(); | |||
1618 | while (F.hasNext()) | |||
1619 | if (isUsingDecl(F.next())) | |||
1620 | F.erase(); | |||
1621 | ||||
1622 | F.done(); | |||
1623 | } | |||
1624 | ||||
1625 | /// Check for this common pattern: | |||
1626 | /// @code | |||
1627 | /// class S { | |||
1628 | /// S(const S&); // DO NOT IMPLEMENT | |||
1629 | /// void operator=(const S&); // DO NOT IMPLEMENT | |||
1630 | /// }; | |||
1631 | /// @endcode | |||
1632 | static bool IsDisallowedCopyOrAssign(const CXXMethodDecl *D) { | |||
1633 | // FIXME: Should check for private access too but access is set after we get | |||
1634 | // the decl here. | |||
1635 | if (D->doesThisDeclarationHaveABody()) | |||
1636 | return false; | |||
1637 | ||||
1638 | if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(D)) | |||
1639 | return CD->isCopyConstructor(); | |||
1640 | return D->isCopyAssignmentOperator(); | |||
1641 | } | |||
1642 | ||||
1643 | // We need this to handle | |||
1644 | // | |||
1645 | // typedef struct { | |||
1646 | // void *foo() { return 0; } | |||
1647 | // } A; | |||
1648 | // | |||
1649 | // When we see foo we don't know if after the typedef we will get 'A' or '*A' | |||
1650 | // for example. If 'A', foo will have external linkage. If we have '*A', | |||
1651 | // foo will have no linkage. Since we can't know until we get to the end | |||
1652 | // of the typedef, this function finds out if D might have non-external linkage. | |||
1653 | // Callers should verify at the end of the TU if it D has external linkage or | |||
1654 | // not. | |||
1655 | bool Sema::mightHaveNonExternalLinkage(const DeclaratorDecl *D) { | |||
1656 | const DeclContext *DC = D->getDeclContext(); | |||
1657 | while (!DC->isTranslationUnit()) { | |||
1658 | if (const RecordDecl *RD = dyn_cast<RecordDecl>(DC)){ | |||
1659 | if (!RD->hasNameForLinkage()) | |||
1660 | return true; | |||
1661 | } | |||
1662 | DC = DC->getParent(); | |||
1663 | } | |||
1664 | ||||
1665 | return !D->isExternallyVisible(); | |||
1666 | } | |||
1667 | ||||
1668 | // FIXME: This needs to be refactored; some other isInMainFile users want | |||
1669 | // these semantics. | |||
1670 | static bool isMainFileLoc(const Sema &S, SourceLocation Loc) { | |||
1671 | if (S.TUKind != TU_Complete) | |||
1672 | return false; | |||
1673 | return S.SourceMgr.isInMainFile(Loc); | |||
1674 | } | |||
1675 | ||||
1676 | bool Sema::ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const { | |||
1677 | assert(D)((D) ? static_cast<void> (0) : __assert_fail ("D", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1677, __PRETTY_FUNCTION__)); | |||
1678 | ||||
1679 | if (D->isInvalidDecl() || D->isUsed() || D->hasAttr<UnusedAttr>()) | |||
1680 | return false; | |||
1681 | ||||
1682 | // Ignore all entities declared within templates, and out-of-line definitions | |||
1683 | // of members of class templates. | |||
1684 | if (D->getDeclContext()->isDependentContext() || | |||
1685 | D->getLexicalDeclContext()->isDependentContext()) | |||
1686 | return false; | |||
1687 | ||||
1688 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | |||
1689 | if (FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation) | |||
1690 | return false; | |||
1691 | // A non-out-of-line declaration of a member specialization was implicitly | |||
1692 | // instantiated; it's the out-of-line declaration that we're interested in. | |||
1693 | if (FD->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && | |||
1694 | FD->getMemberSpecializationInfo() && !FD->isOutOfLine()) | |||
1695 | return false; | |||
1696 | ||||
1697 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) { | |||
1698 | if (MD->isVirtual() || IsDisallowedCopyOrAssign(MD)) | |||
1699 | return false; | |||
1700 | } else { | |||
1701 | // 'static inline' functions are defined in headers; don't warn. | |||
1702 | if (FD->isInlined() && !isMainFileLoc(*this, FD->getLocation())) | |||
1703 | return false; | |||
1704 | } | |||
1705 | ||||
1706 | if (FD->doesThisDeclarationHaveABody() && | |||
1707 | Context.DeclMustBeEmitted(FD)) | |||
1708 | return false; | |||
1709 | } else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { | |||
1710 | // Constants and utility variables are defined in headers with internal | |||
1711 | // linkage; don't warn. (Unlike functions, there isn't a convenient marker | |||
1712 | // like "inline".) | |||
1713 | if (!isMainFileLoc(*this, VD->getLocation())) | |||
1714 | return false; | |||
1715 | ||||
1716 | if (Context.DeclMustBeEmitted(VD)) | |||
1717 | return false; | |||
1718 | ||||
1719 | if (VD->isStaticDataMember() && | |||
1720 | VD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation) | |||
1721 | return false; | |||
1722 | if (VD->isStaticDataMember() && | |||
1723 | VD->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && | |||
1724 | VD->getMemberSpecializationInfo() && !VD->isOutOfLine()) | |||
1725 | return false; | |||
1726 | ||||
1727 | if (VD->isInline() && !isMainFileLoc(*this, VD->getLocation())) | |||
1728 | return false; | |||
1729 | } else { | |||
1730 | return false; | |||
1731 | } | |||
1732 | ||||
1733 | // Only warn for unused decls internal to the translation unit. | |||
1734 | // FIXME: This seems like a bogus check; it suppresses -Wunused-function | |||
1735 | // for inline functions defined in the main source file, for instance. | |||
1736 | return mightHaveNonExternalLinkage(D); | |||
1737 | } | |||
1738 | ||||
1739 | void Sema::MarkUnusedFileScopedDecl(const DeclaratorDecl *D) { | |||
1740 | if (!D) | |||
1741 | return; | |||
1742 | ||||
1743 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | |||
1744 | const FunctionDecl *First = FD->getFirstDecl(); | |||
1745 | if (FD != First && ShouldWarnIfUnusedFileScopedDecl(First)) | |||
1746 | return; // First should already be in the vector. | |||
1747 | } | |||
1748 | ||||
1749 | if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { | |||
1750 | const VarDecl *First = VD->getFirstDecl(); | |||
1751 | if (VD != First && ShouldWarnIfUnusedFileScopedDecl(First)) | |||
1752 | return; // First should already be in the vector. | |||
1753 | } | |||
1754 | ||||
1755 | if (ShouldWarnIfUnusedFileScopedDecl(D)) | |||
1756 | UnusedFileScopedDecls.push_back(D); | |||
1757 | } | |||
1758 | ||||
1759 | static bool ShouldDiagnoseUnusedDecl(const NamedDecl *D) { | |||
1760 | if (D->isInvalidDecl()) | |||
1761 | return false; | |||
1762 | ||||
1763 | if (auto *DD = dyn_cast<DecompositionDecl>(D)) { | |||
1764 | // For a decomposition declaration, warn if none of the bindings are | |||
1765 | // referenced, instead of if the variable itself is referenced (which | |||
1766 | // it is, by the bindings' expressions). | |||
1767 | for (auto *BD : DD->bindings()) | |||
1768 | if (BD->isReferenced()) | |||
1769 | return false; | |||
1770 | } else if (!D->getDeclName()) { | |||
1771 | return false; | |||
1772 | } else if (D->isReferenced() || D->isUsed()) { | |||
1773 | return false; | |||
1774 | } | |||
1775 | ||||
1776 | if (D->hasAttr<UnusedAttr>() || D->hasAttr<ObjCPreciseLifetimeAttr>()) | |||
1777 | return false; | |||
1778 | ||||
1779 | if (isa<LabelDecl>(D)) | |||
1780 | return true; | |||
1781 | ||||
1782 | // Except for labels, we only care about unused decls that are local to | |||
1783 | // functions. | |||
1784 | bool WithinFunction = D->getDeclContext()->isFunctionOrMethod(); | |||
1785 | if (const auto *R = dyn_cast<CXXRecordDecl>(D->getDeclContext())) | |||
1786 | // For dependent types, the diagnostic is deferred. | |||
1787 | WithinFunction = | |||
1788 | WithinFunction || (R->isLocalClass() && !R->isDependentType()); | |||
1789 | if (!WithinFunction) | |||
1790 | return false; | |||
1791 | ||||
1792 | if (isa<TypedefNameDecl>(D)) | |||
1793 | return true; | |||
1794 | ||||
1795 | // White-list anything that isn't a local variable. | |||
1796 | if (!isa<VarDecl>(D) || isa<ParmVarDecl>(D) || isa<ImplicitParamDecl>(D)) | |||
1797 | return false; | |||
1798 | ||||
1799 | // Types of valid local variables should be complete, so this should succeed. | |||
1800 | if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { | |||
1801 | ||||
1802 | // White-list anything with an __attribute__((unused)) type. | |||
1803 | const auto *Ty = VD->getType().getTypePtr(); | |||
1804 | ||||
1805 | // Only look at the outermost level of typedef. | |||
1806 | if (const TypedefType *TT = Ty->getAs<TypedefType>()) { | |||
1807 | if (TT->getDecl()->hasAttr<UnusedAttr>()) | |||
1808 | return false; | |||
1809 | } | |||
1810 | ||||
1811 | // If we failed to complete the type for some reason, or if the type is | |||
1812 | // dependent, don't diagnose the variable. | |||
1813 | if (Ty->isIncompleteType() || Ty->isDependentType()) | |||
1814 | return false; | |||
1815 | ||||
1816 | // Look at the element type to ensure that the warning behaviour is | |||
1817 | // consistent for both scalars and arrays. | |||
1818 | Ty = Ty->getBaseElementTypeUnsafe(); | |||
1819 | ||||
1820 | if (const TagType *TT = Ty->getAs<TagType>()) { | |||
1821 | const TagDecl *Tag = TT->getDecl(); | |||
1822 | if (Tag->hasAttr<UnusedAttr>()) | |||
1823 | return false; | |||
1824 | ||||
1825 | if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(Tag)) { | |||
1826 | if (!RD->hasTrivialDestructor() && !RD->hasAttr<WarnUnusedAttr>()) | |||
1827 | return false; | |||
1828 | ||||
1829 | if (const Expr *Init = VD->getInit()) { | |||
1830 | if (const ExprWithCleanups *Cleanups = | |||
1831 | dyn_cast<ExprWithCleanups>(Init)) | |||
1832 | Init = Cleanups->getSubExpr(); | |||
1833 | const CXXConstructExpr *Construct = | |||
1834 | dyn_cast<CXXConstructExpr>(Init); | |||
1835 | if (Construct && !Construct->isElidable()) { | |||
1836 | CXXConstructorDecl *CD = Construct->getConstructor(); | |||
1837 | if (!CD->isTrivial() && !RD->hasAttr<WarnUnusedAttr>() && | |||
1838 | (VD->getInit()->isValueDependent() || !VD->evaluateValue())) | |||
1839 | return false; | |||
1840 | } | |||
1841 | ||||
1842 | // Suppress the warning if we don't know how this is constructed, and | |||
1843 | // it could possibly be non-trivial constructor. | |||
1844 | if (Init->isTypeDependent()) | |||
1845 | for (const CXXConstructorDecl *Ctor : RD->ctors()) | |||
1846 | if (!Ctor->isTrivial()) | |||
1847 | return false; | |||
1848 | } | |||
1849 | } | |||
1850 | } | |||
1851 | ||||
1852 | // TODO: __attribute__((unused)) templates? | |||
1853 | } | |||
1854 | ||||
1855 | return true; | |||
1856 | } | |||
1857 | ||||
1858 | static void GenerateFixForUnusedDecl(const NamedDecl *D, ASTContext &Ctx, | |||
1859 | FixItHint &Hint) { | |||
1860 | if (isa<LabelDecl>(D)) { | |||
1861 | SourceLocation AfterColon = Lexer::findLocationAfterToken( | |||
1862 | D->getEndLoc(), tok::colon, Ctx.getSourceManager(), Ctx.getLangOpts(), | |||
1863 | true); | |||
1864 | if (AfterColon.isInvalid()) | |||
1865 | return; | |||
1866 | Hint = FixItHint::CreateRemoval( | |||
1867 | CharSourceRange::getCharRange(D->getBeginLoc(), AfterColon)); | |||
1868 | } | |||
1869 | } | |||
1870 | ||||
1871 | void Sema::DiagnoseUnusedNestedTypedefs(const RecordDecl *D) { | |||
1872 | if (D->getTypeForDecl()->isDependentType()) | |||
1873 | return; | |||
1874 | ||||
1875 | for (auto *TmpD : D->decls()) { | |||
1876 | if (const auto *T = dyn_cast<TypedefNameDecl>(TmpD)) | |||
1877 | DiagnoseUnusedDecl(T); | |||
1878 | else if(const auto *R = dyn_cast<RecordDecl>(TmpD)) | |||
1879 | DiagnoseUnusedNestedTypedefs(R); | |||
1880 | } | |||
1881 | } | |||
1882 | ||||
1883 | /// DiagnoseUnusedDecl - Emit warnings about declarations that are not used | |||
1884 | /// unless they are marked attr(unused). | |||
1885 | void Sema::DiagnoseUnusedDecl(const NamedDecl *D) { | |||
1886 | if (!ShouldDiagnoseUnusedDecl(D)) | |||
1887 | return; | |||
1888 | ||||
1889 | if (auto *TD = dyn_cast<TypedefNameDecl>(D)) { | |||
1890 | // typedefs can be referenced later on, so the diagnostics are emitted | |||
1891 | // at end-of-translation-unit. | |||
1892 | UnusedLocalTypedefNameCandidates.insert(TD); | |||
1893 | return; | |||
1894 | } | |||
1895 | ||||
1896 | FixItHint Hint; | |||
1897 | GenerateFixForUnusedDecl(D, Context, Hint); | |||
1898 | ||||
1899 | unsigned DiagID; | |||
1900 | if (isa<VarDecl>(D) && cast<VarDecl>(D)->isExceptionVariable()) | |||
1901 | DiagID = diag::warn_unused_exception_param; | |||
1902 | else if (isa<LabelDecl>(D)) | |||
1903 | DiagID = diag::warn_unused_label; | |||
1904 | else | |||
1905 | DiagID = diag::warn_unused_variable; | |||
1906 | ||||
1907 | Diag(D->getLocation(), DiagID) << D << Hint; | |||
1908 | } | |||
1909 | ||||
1910 | static void CheckPoppedLabel(LabelDecl *L, Sema &S) { | |||
1911 | // Verify that we have no forward references left. If so, there was a goto | |||
1912 | // or address of a label taken, but no definition of it. Label fwd | |||
1913 | // definitions are indicated with a null substmt which is also not a resolved | |||
1914 | // MS inline assembly label name. | |||
1915 | bool Diagnose = false; | |||
1916 | if (L->isMSAsmLabel()) | |||
1917 | Diagnose = !L->isResolvedMSAsmLabel(); | |||
1918 | else | |||
1919 | Diagnose = L->getStmt() == nullptr; | |||
1920 | if (Diagnose) | |||
1921 | S.Diag(L->getLocation(), diag::err_undeclared_label_use) << L; | |||
1922 | } | |||
1923 | ||||
1924 | void Sema::ActOnPopScope(SourceLocation Loc, Scope *S) { | |||
1925 | S->mergeNRVOIntoParent(); | |||
1926 | ||||
1927 | if (S->decl_empty()) return; | |||
1928 | assert((S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope)) &&(((S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope )) && "Scope shouldn't contain decls!") ? static_cast <void> (0) : __assert_fail ("(S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope)) && \"Scope shouldn't contain decls!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1929, __PRETTY_FUNCTION__)) | |||
1929 | "Scope shouldn't contain decls!")(((S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope )) && "Scope shouldn't contain decls!") ? static_cast <void> (0) : __assert_fail ("(S->getFlags() & (Scope::DeclScope | Scope::TemplateParamScope)) && \"Scope shouldn't contain decls!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1929, __PRETTY_FUNCTION__)); | |||
1930 | ||||
1931 | for (auto *TmpD : S->decls()) { | |||
1932 | assert(TmpD && "This decl didn't get pushed??")((TmpD && "This decl didn't get pushed??") ? static_cast <void> (0) : __assert_fail ("TmpD && \"This decl didn't get pushed??\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1932, __PRETTY_FUNCTION__)); | |||
1933 | ||||
1934 | assert(isa<NamedDecl>(TmpD) && "Decl isn't NamedDecl?")((isa<NamedDecl>(TmpD) && "Decl isn't NamedDecl?" ) ? static_cast<void> (0) : __assert_fail ("isa<NamedDecl>(TmpD) && \"Decl isn't NamedDecl?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 1934, __PRETTY_FUNCTION__)); | |||
1935 | NamedDecl *D = cast<NamedDecl>(TmpD); | |||
1936 | ||||
1937 | // Diagnose unused variables in this scope. | |||
1938 | if (!S->hasUnrecoverableErrorOccurred()) { | |||
1939 | DiagnoseUnusedDecl(D); | |||
1940 | if (const auto *RD = dyn_cast<RecordDecl>(D)) | |||
1941 | DiagnoseUnusedNestedTypedefs(RD); | |||
1942 | } | |||
1943 | ||||
1944 | if (!D->getDeclName()) continue; | |||
1945 | ||||
1946 | // If this was a forward reference to a label, verify it was defined. | |||
1947 | if (LabelDecl *LD = dyn_cast<LabelDecl>(D)) | |||
1948 | CheckPoppedLabel(LD, *this); | |||
1949 | ||||
1950 | // Remove this name from our lexical scope, and warn on it if we haven't | |||
1951 | // already. | |||
1952 | IdResolver.RemoveDecl(D); | |||
1953 | auto ShadowI = ShadowingDecls.find(D); | |||
1954 | if (ShadowI != ShadowingDecls.end()) { | |||
1955 | if (const auto *FD = dyn_cast<FieldDecl>(ShadowI->second)) { | |||
1956 | Diag(D->getLocation(), diag::warn_ctor_parm_shadows_field) | |||
1957 | << D << FD << FD->getParent(); | |||
1958 | Diag(FD->getLocation(), diag::note_previous_declaration); | |||
1959 | } | |||
1960 | ShadowingDecls.erase(ShadowI); | |||
1961 | } | |||
1962 | } | |||
1963 | } | |||
1964 | ||||
1965 | /// Look for an Objective-C class in the translation unit. | |||
1966 | /// | |||
1967 | /// \param Id The name of the Objective-C class we're looking for. If | |||
1968 | /// typo-correction fixes this name, the Id will be updated | |||
1969 | /// to the fixed name. | |||
1970 | /// | |||
1971 | /// \param IdLoc The location of the name in the translation unit. | |||
1972 | /// | |||
1973 | /// \param DoTypoCorrection If true, this routine will attempt typo correction | |||
1974 | /// if there is no class with the given name. | |||
1975 | /// | |||
1976 | /// \returns The declaration of the named Objective-C class, or NULL if the | |||
1977 | /// class could not be found. | |||
1978 | ObjCInterfaceDecl *Sema::getObjCInterfaceDecl(IdentifierInfo *&Id, | |||
1979 | SourceLocation IdLoc, | |||
1980 | bool DoTypoCorrection) { | |||
1981 | // The third "scope" argument is 0 since we aren't enabling lazy built-in | |||
1982 | // creation from this context. | |||
1983 | NamedDecl *IDecl = LookupSingleName(TUScope, Id, IdLoc, LookupOrdinaryName); | |||
1984 | ||||
1985 | if (!IDecl && DoTypoCorrection) { | |||
1986 | // Perform typo correction at the given location, but only if we | |||
1987 | // find an Objective-C class name. | |||
1988 | DeclFilterCCC<ObjCInterfaceDecl> CCC{}; | |||
1989 | if (TypoCorrection C = | |||
1990 | CorrectTypo(DeclarationNameInfo(Id, IdLoc), LookupOrdinaryName, | |||
1991 | TUScope, nullptr, CCC, CTK_ErrorRecovery)) { | |||
1992 | diagnoseTypo(C, PDiag(diag::err_undef_interface_suggest) << Id); | |||
1993 | IDecl = C.getCorrectionDeclAs<ObjCInterfaceDecl>(); | |||
1994 | Id = IDecl->getIdentifier(); | |||
1995 | } | |||
1996 | } | |||
1997 | ObjCInterfaceDecl *Def = dyn_cast_or_null<ObjCInterfaceDecl>(IDecl); | |||
1998 | // This routine must always return a class definition, if any. | |||
1999 | if (Def && Def->getDefinition()) | |||
2000 | Def = Def->getDefinition(); | |||
2001 | return Def; | |||
2002 | } | |||
2003 | ||||
2004 | /// getNonFieldDeclScope - Retrieves the innermost scope, starting | |||
2005 | /// from S, where a non-field would be declared. This routine copes | |||
2006 | /// with the difference between C and C++ scoping rules in structs and | |||
2007 | /// unions. For example, the following code is well-formed in C but | |||
2008 | /// ill-formed in C++: | |||
2009 | /// @code | |||
2010 | /// struct S6 { | |||
2011 | /// enum { BAR } e; | |||
2012 | /// }; | |||
2013 | /// | |||
2014 | /// void test_S6() { | |||
2015 | /// struct S6 a; | |||
2016 | /// a.e = BAR; | |||
2017 | /// } | |||
2018 | /// @endcode | |||
2019 | /// For the declaration of BAR, this routine will return a different | |||
2020 | /// scope. The scope S will be the scope of the unnamed enumeration | |||
2021 | /// within S6. In C++, this routine will return the scope associated | |||
2022 | /// with S6, because the enumeration's scope is a transparent | |||
2023 | /// context but structures can contain non-field names. In C, this | |||
2024 | /// routine will return the translation unit scope, since the | |||
2025 | /// enumeration's scope is a transparent context and structures cannot | |||
2026 | /// contain non-field names. | |||
2027 | Scope *Sema::getNonFieldDeclScope(Scope *S) { | |||
2028 | while (((S->getFlags() & Scope::DeclScope) == 0) || | |||
2029 | (S->getEntity() && S->getEntity()->isTransparentContext()) || | |||
2030 | (S->isClassScope() && !getLangOpts().CPlusPlus)) | |||
2031 | S = S->getParent(); | |||
2032 | return S; | |||
2033 | } | |||
2034 | ||||
2035 | static StringRef getHeaderName(Builtin::Context &BuiltinInfo, unsigned ID, | |||
2036 | ASTContext::GetBuiltinTypeError Error) { | |||
2037 | switch (Error) { | |||
2038 | case ASTContext::GE_None: | |||
2039 | return ""; | |||
2040 | case ASTContext::GE_Missing_type: | |||
2041 | return BuiltinInfo.getHeaderName(ID); | |||
2042 | case ASTContext::GE_Missing_stdio: | |||
2043 | return "stdio.h"; | |||
2044 | case ASTContext::GE_Missing_setjmp: | |||
2045 | return "setjmp.h"; | |||
2046 | case ASTContext::GE_Missing_ucontext: | |||
2047 | return "ucontext.h"; | |||
2048 | } | |||
2049 | llvm_unreachable("unhandled error kind")::llvm::llvm_unreachable_internal("unhandled error kind", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 2049); | |||
2050 | } | |||
2051 | ||||
2052 | FunctionDecl *Sema::CreateBuiltin(IdentifierInfo *II, QualType Type, | |||
2053 | unsigned ID, SourceLocation Loc) { | |||
2054 | DeclContext *Parent = Context.getTranslationUnitDecl(); | |||
2055 | ||||
2056 | if (getLangOpts().CPlusPlus) { | |||
2057 | LinkageSpecDecl *CLinkageDecl = LinkageSpecDecl::Create( | |||
2058 | Context, Parent, Loc, Loc, LinkageSpecDecl::lang_c, false); | |||
2059 | CLinkageDecl->setImplicit(); | |||
2060 | Parent->addDecl(CLinkageDecl); | |||
2061 | Parent = CLinkageDecl; | |||
2062 | } | |||
2063 | ||||
2064 | FunctionDecl *New = FunctionDecl::Create(Context, Parent, Loc, Loc, II, Type, | |||
2065 | /*TInfo=*/nullptr, SC_Extern, false, | |||
2066 | Type->isFunctionProtoType()); | |||
2067 | New->setImplicit(); | |||
2068 | New->addAttr(BuiltinAttr::CreateImplicit(Context, ID)); | |||
2069 | ||||
2070 | // Create Decl objects for each parameter, adding them to the | |||
2071 | // FunctionDecl. | |||
2072 | if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(Type)) { | |||
2073 | SmallVector<ParmVarDecl *, 16> Params; | |||
2074 | for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { | |||
2075 | ParmVarDecl *parm = ParmVarDecl::Create( | |||
2076 | Context, New, SourceLocation(), SourceLocation(), nullptr, | |||
2077 | FT->getParamType(i), /*TInfo=*/nullptr, SC_None, nullptr); | |||
2078 | parm->setScopeInfo(0, i); | |||
2079 | Params.push_back(parm); | |||
2080 | } | |||
2081 | New->setParams(Params); | |||
2082 | } | |||
2083 | ||||
2084 | AddKnownFunctionAttributes(New); | |||
2085 | return New; | |||
2086 | } | |||
2087 | ||||
2088 | /// LazilyCreateBuiltin - The specified Builtin-ID was first used at | |||
2089 | /// file scope. lazily create a decl for it. ForRedeclaration is true | |||
2090 | /// if we're creating this built-in in anticipation of redeclaring the | |||
2091 | /// built-in. | |||
2092 | NamedDecl *Sema::LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, | |||
2093 | Scope *S, bool ForRedeclaration, | |||
2094 | SourceLocation Loc) { | |||
2095 | LookupNecessaryTypesForBuiltin(S, ID); | |||
2096 | ||||
2097 | ASTContext::GetBuiltinTypeError Error; | |||
2098 | QualType R = Context.GetBuiltinType(ID, Error); | |||
2099 | if (Error) { | |||
2100 | if (!ForRedeclaration) | |||
2101 | return nullptr; | |||
2102 | ||||
2103 | // If we have a builtin without an associated type we should not emit a | |||
2104 | // warning when we were not able to find a type for it. | |||
2105 | if (Error == ASTContext::GE_Missing_type || | |||
2106 | Context.BuiltinInfo.allowTypeMismatch(ID)) | |||
2107 | return nullptr; | |||
2108 | ||||
2109 | // If we could not find a type for setjmp it is because the jmp_buf type was | |||
2110 | // not defined prior to the setjmp declaration. | |||
2111 | if (Error == ASTContext::GE_Missing_setjmp) { | |||
2112 | Diag(Loc, diag::warn_implicit_decl_no_jmp_buf) | |||
2113 | << Context.BuiltinInfo.getName(ID); | |||
2114 | return nullptr; | |||
2115 | } | |||
2116 | ||||
2117 | // Generally, we emit a warning that the declaration requires the | |||
2118 | // appropriate header. | |||
2119 | Diag(Loc, diag::warn_implicit_decl_requires_sysheader) | |||
2120 | << getHeaderName(Context.BuiltinInfo, ID, Error) | |||
2121 | << Context.BuiltinInfo.getName(ID); | |||
2122 | return nullptr; | |||
2123 | } | |||
2124 | ||||
2125 | if (!ForRedeclaration && | |||
2126 | (Context.BuiltinInfo.isPredefinedLibFunction(ID) || | |||
2127 | Context.BuiltinInfo.isHeaderDependentFunction(ID))) { | |||
2128 | Diag(Loc, diag::ext_implicit_lib_function_decl) | |||
2129 | << Context.BuiltinInfo.getName(ID) << R; | |||
2130 | if (const char *Header = Context.BuiltinInfo.getHeaderName(ID)) | |||
2131 | Diag(Loc, diag::note_include_header_or_declare) | |||
2132 | << Header << Context.BuiltinInfo.getName(ID); | |||
2133 | } | |||
2134 | ||||
2135 | if (R.isNull()) | |||
2136 | return nullptr; | |||
2137 | ||||
2138 | FunctionDecl *New = CreateBuiltin(II, R, ID, Loc); | |||
2139 | RegisterLocallyScopedExternCDecl(New, S); | |||
2140 | ||||
2141 | // TUScope is the translation-unit scope to insert this function into. | |||
2142 | // FIXME: This is hideous. We need to teach PushOnScopeChains to | |||
2143 | // relate Scopes to DeclContexts, and probably eliminate CurContext | |||
2144 | // entirely, but we're not there yet. | |||
2145 | DeclContext *SavedContext = CurContext; | |||
2146 | CurContext = New->getDeclContext(); | |||
2147 | PushOnScopeChains(New, TUScope); | |||
2148 | CurContext = SavedContext; | |||
2149 | return New; | |||
2150 | } | |||
2151 | ||||
2152 | /// Typedef declarations don't have linkage, but they still denote the same | |||
2153 | /// entity if their types are the same. | |||
2154 | /// FIXME: This is notionally doing the same thing as ASTReaderDecl's | |||
2155 | /// isSameEntity. | |||
2156 | static void filterNonConflictingPreviousTypedefDecls(Sema &S, | |||
2157 | TypedefNameDecl *Decl, | |||
2158 | LookupResult &Previous) { | |||
2159 | // This is only interesting when modules are enabled. | |||
2160 | if (!S.getLangOpts().Modules && !S.getLangOpts().ModulesLocalVisibility) | |||
2161 | return; | |||
2162 | ||||
2163 | // Empty sets are uninteresting. | |||
2164 | if (Previous.empty()) | |||
2165 | return; | |||
2166 | ||||
2167 | LookupResult::Filter Filter = Previous.makeFilter(); | |||
2168 | while (Filter.hasNext()) { | |||
2169 | NamedDecl *Old = Filter.next(); | |||
2170 | ||||
2171 | // Non-hidden declarations are never ignored. | |||
2172 | if (S.isVisible(Old)) | |||
2173 | continue; | |||
2174 | ||||
2175 | // Declarations of the same entity are not ignored, even if they have | |||
2176 | // different linkages. | |||
2177 | if (auto *OldTD = dyn_cast<TypedefNameDecl>(Old)) { | |||
2178 | if (S.Context.hasSameType(OldTD->getUnderlyingType(), | |||
2179 | Decl->getUnderlyingType())) | |||
2180 | continue; | |||
2181 | ||||
2182 | // If both declarations give a tag declaration a typedef name for linkage | |||
2183 | // purposes, then they declare the same entity. | |||
2184 | if (OldTD->getAnonDeclWithTypedefName(/*AnyRedecl*/true) && | |||
2185 | Decl->getAnonDeclWithTypedefName()) | |||
2186 | continue; | |||
2187 | } | |||
2188 | ||||
2189 | Filter.erase(); | |||
2190 | } | |||
2191 | ||||
2192 | Filter.done(); | |||
2193 | } | |||
2194 | ||||
2195 | bool Sema::isIncompatibleTypedef(TypeDecl *Old, TypedefNameDecl *New) { | |||
2196 | QualType OldType; | |||
2197 | if (TypedefNameDecl *OldTypedef = dyn_cast<TypedefNameDecl>(Old)) | |||
2198 | OldType = OldTypedef->getUnderlyingType(); | |||
2199 | else | |||
2200 | OldType = Context.getTypeDeclType(Old); | |||
2201 | QualType NewType = New->getUnderlyingType(); | |||
2202 | ||||
2203 | if (NewType->isVariablyModifiedType()) { | |||
2204 | // Must not redefine a typedef with a variably-modified type. | |||
2205 | int Kind = isa<TypeAliasDecl>(Old) ? 1 : 0; | |||
2206 | Diag(New->getLocation(), diag::err_redefinition_variably_modified_typedef) | |||
2207 | << Kind << NewType; | |||
2208 | if (Old->getLocation().isValid()) | |||
2209 | notePreviousDefinition(Old, New->getLocation()); | |||
2210 | New->setInvalidDecl(); | |||
2211 | return true; | |||
2212 | } | |||
2213 | ||||
2214 | if (OldType != NewType && | |||
2215 | !OldType->isDependentType() && | |||
2216 | !NewType->isDependentType() && | |||
2217 | !Context.hasSameType(OldType, NewType)) { | |||
2218 | int Kind = isa<TypeAliasDecl>(Old) ? 1 : 0; | |||
2219 | Diag(New->getLocation(), diag::err_redefinition_different_typedef) | |||
2220 | << Kind << NewType << OldType; | |||
2221 | if (Old->getLocation().isValid()) | |||
2222 | notePreviousDefinition(Old, New->getLocation()); | |||
2223 | New->setInvalidDecl(); | |||
2224 | return true; | |||
2225 | } | |||
2226 | return false; | |||
2227 | } | |||
2228 | ||||
2229 | /// MergeTypedefNameDecl - We just parsed a typedef 'New' which has the | |||
2230 | /// same name and scope as a previous declaration 'Old'. Figure out | |||
2231 | /// how to resolve this situation, merging decls or emitting | |||
2232 | /// diagnostics as appropriate. If there was an error, set New to be invalid. | |||
2233 | /// | |||
2234 | void Sema::MergeTypedefNameDecl(Scope *S, TypedefNameDecl *New, | |||
2235 | LookupResult &OldDecls) { | |||
2236 | // If the new decl is known invalid already, don't bother doing any | |||
2237 | // merging checks. | |||
2238 | if (New->isInvalidDecl()) return; | |||
2239 | ||||
2240 | // Allow multiple definitions for ObjC built-in typedefs. | |||
2241 | // FIXME: Verify the underlying types are equivalent! | |||
2242 | if (getLangOpts().ObjC) { | |||
2243 | const IdentifierInfo *TypeID = New->getIdentifier(); | |||
2244 | switch (TypeID->getLength()) { | |||
2245 | default: break; | |||
2246 | case 2: | |||
2247 | { | |||
2248 | if (!TypeID->isStr("id")) | |||
2249 | break; | |||
2250 | QualType T = New->getUnderlyingType(); | |||
2251 | if (!T->isPointerType()) | |||
2252 | break; | |||
2253 | if (!T->isVoidPointerType()) { | |||
2254 | QualType PT = T->castAs<PointerType>()->getPointeeType(); | |||
2255 | if (!PT->isStructureType()) | |||
2256 | break; | |||
2257 | } | |||
2258 | Context.setObjCIdRedefinitionType(T); | |||
2259 | // Install the built-in type for 'id', ignoring the current definition. | |||
2260 | New->setTypeForDecl(Context.getObjCIdType().getTypePtr()); | |||
2261 | return; | |||
2262 | } | |||
2263 | case 5: | |||
2264 | if (!TypeID->isStr("Class")) | |||
2265 | break; | |||
2266 | Context.setObjCClassRedefinitionType(New->getUnderlyingType()); | |||
2267 | // Install the built-in type for 'Class', ignoring the current definition. | |||
2268 | New->setTypeForDecl(Context.getObjCClassType().getTypePtr()); | |||
2269 | return; | |||
2270 | case 3: | |||
2271 | if (!TypeID->isStr("SEL")) | |||
2272 | break; | |||
2273 | Context.setObjCSelRedefinitionType(New->getUnderlyingType()); | |||
2274 | // Install the built-in type for 'SEL', ignoring the current definition. | |||
2275 | New->setTypeForDecl(Context.getObjCSelType().getTypePtr()); | |||
2276 | return; | |||
2277 | } | |||
2278 | // Fall through - the typedef name was not a builtin type. | |||
2279 | } | |||
2280 | ||||
2281 | // Verify the old decl was also a type. | |||
2282 | TypeDecl *Old = OldDecls.getAsSingle<TypeDecl>(); | |||
2283 | if (!Old) { | |||
2284 | Diag(New->getLocation(), diag::err_redefinition_different_kind) | |||
2285 | << New->getDeclName(); | |||
2286 | ||||
2287 | NamedDecl *OldD = OldDecls.getRepresentativeDecl(); | |||
2288 | if (OldD->getLocation().isValid()) | |||
2289 | notePreviousDefinition(OldD, New->getLocation()); | |||
2290 | ||||
2291 | return New->setInvalidDecl(); | |||
2292 | } | |||
2293 | ||||
2294 | // If the old declaration is invalid, just give up here. | |||
2295 | if (Old->isInvalidDecl()) | |||
2296 | return New->setInvalidDecl(); | |||
2297 | ||||
2298 | if (auto *OldTD = dyn_cast<TypedefNameDecl>(Old)) { | |||
2299 | auto *OldTag = OldTD->getAnonDeclWithTypedefName(/*AnyRedecl*/true); | |||
2300 | auto *NewTag = New->getAnonDeclWithTypedefName(); | |||
2301 | NamedDecl *Hidden = nullptr; | |||
2302 | if (OldTag && NewTag && | |||
2303 | OldTag->getCanonicalDecl() != NewTag->getCanonicalDecl() && | |||
2304 | !hasVisibleDefinition(OldTag, &Hidden)) { | |||
2305 | // There is a definition of this tag, but it is not visible. Use it | |||
2306 | // instead of our tag. | |||
2307 | New->setTypeForDecl(OldTD->getTypeForDecl()); | |||
2308 | if (OldTD->isModed()) | |||
2309 | New->setModedTypeSourceInfo(OldTD->getTypeSourceInfo(), | |||
2310 | OldTD->getUnderlyingType()); | |||
2311 | else | |||
2312 | New->setTypeSourceInfo(OldTD->getTypeSourceInfo()); | |||
2313 | ||||
2314 | // Make the old tag definition visible. | |||
2315 | makeMergedDefinitionVisible(Hidden); | |||
2316 | ||||
2317 | // If this was an unscoped enumeration, yank all of its enumerators | |||
2318 | // out of the scope. | |||
2319 | if (isa<EnumDecl>(NewTag)) { | |||
2320 | Scope *EnumScope = getNonFieldDeclScope(S); | |||
2321 | for (auto *D : NewTag->decls()) { | |||
2322 | auto *ED = cast<EnumConstantDecl>(D); | |||
2323 | assert(EnumScope->isDeclScope(ED))((EnumScope->isDeclScope(ED)) ? static_cast<void> (0 ) : __assert_fail ("EnumScope->isDeclScope(ED)", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 2323, __PRETTY_FUNCTION__)); | |||
2324 | EnumScope->RemoveDecl(ED); | |||
2325 | IdResolver.RemoveDecl(ED); | |||
2326 | ED->getLexicalDeclContext()->removeDecl(ED); | |||
2327 | } | |||
2328 | } | |||
2329 | } | |||
2330 | } | |||
2331 | ||||
2332 | // If the typedef types are not identical, reject them in all languages and | |||
2333 | // with any extensions enabled. | |||
2334 | if (isIncompatibleTypedef(Old, New)) | |||
2335 | return; | |||
2336 | ||||
2337 | // The types match. Link up the redeclaration chain and merge attributes if | |||
2338 | // the old declaration was a typedef. | |||
2339 | if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Old)) { | |||
2340 | New->setPreviousDecl(Typedef); | |||
2341 | mergeDeclAttributes(New, Old); | |||
2342 | } | |||
2343 | ||||
2344 | if (getLangOpts().MicrosoftExt) | |||
2345 | return; | |||
2346 | ||||
2347 | if (getLangOpts().CPlusPlus) { | |||
2348 | // C++ [dcl.typedef]p2: | |||
2349 | // In a given non-class scope, a typedef specifier can be used to | |||
2350 | // redefine the name of any type declared in that scope to refer | |||
2351 | // to the type to which it already refers. | |||
2352 | if (!isa<CXXRecordDecl>(CurContext)) | |||
2353 | return; | |||
2354 | ||||
2355 | // C++0x [dcl.typedef]p4: | |||
2356 | // In a given class scope, a typedef specifier can be used to redefine | |||
2357 | // any class-name declared in that scope that is not also a typedef-name | |||
2358 | // to refer to the type to which it already refers. | |||
2359 | // | |||
2360 | // This wording came in via DR424, which was a correction to the | |||
2361 | // wording in DR56, which accidentally banned code like: | |||
2362 | // | |||
2363 | // struct S { | |||
2364 | // typedef struct A { } A; | |||
2365 | // }; | |||
2366 | // | |||
2367 | // in the C++03 standard. We implement the C++0x semantics, which | |||
2368 | // allow the above but disallow | |||
2369 | // | |||
2370 | // struct S { | |||
2371 | // typedef int I; | |||
2372 | // typedef int I; | |||
2373 | // }; | |||
2374 | // | |||
2375 | // since that was the intent of DR56. | |||
2376 | if (!isa<TypedefNameDecl>(Old)) | |||
2377 | return; | |||
2378 | ||||
2379 | Diag(New->getLocation(), diag::err_redefinition) | |||
2380 | << New->getDeclName(); | |||
2381 | notePreviousDefinition(Old, New->getLocation()); | |||
2382 | return New->setInvalidDecl(); | |||
2383 | } | |||
2384 | ||||
2385 | // Modules always permit redefinition of typedefs, as does C11. | |||
2386 | if (getLangOpts().Modules || getLangOpts().C11) | |||
2387 | return; | |||
2388 | ||||
2389 | // If we have a redefinition of a typedef in C, emit a warning. This warning | |||
2390 | // is normally mapped to an error, but can be controlled with | |||
2391 | // -Wtypedef-redefinition. If either the original or the redefinition is | |||
2392 | // in a system header, don't emit this for compatibility with GCC. | |||
2393 | if (getDiagnostics().getSuppressSystemWarnings() && | |||
2394 | // Some standard types are defined implicitly in Clang (e.g. OpenCL). | |||
2395 | (Old->isImplicit() || | |||
2396 | Context.getSourceManager().isInSystemHeader(Old->getLocation()) || | |||
2397 | Context.getSourceManager().isInSystemHeader(New->getLocation()))) | |||
2398 | return; | |||
2399 | ||||
2400 | Diag(New->getLocation(), diag::ext_redefinition_of_typedef) | |||
2401 | << New->getDeclName(); | |||
2402 | notePreviousDefinition(Old, New->getLocation()); | |||
2403 | } | |||
2404 | ||||
2405 | /// DeclhasAttr - returns true if decl Declaration already has the target | |||
2406 | /// attribute. | |||
2407 | static bool DeclHasAttr(const Decl *D, const Attr *A) { | |||
2408 | const OwnershipAttr *OA = dyn_cast<OwnershipAttr>(A); | |||
2409 | const AnnotateAttr *Ann = dyn_cast<AnnotateAttr>(A); | |||
2410 | for (const auto *i : D->attrs()) | |||
2411 | if (i->getKind() == A->getKind()) { | |||
2412 | if (Ann) { | |||
2413 | if (Ann->getAnnotation() == cast<AnnotateAttr>(i)->getAnnotation()) | |||
2414 | return true; | |||
2415 | continue; | |||
2416 | } | |||
2417 | // FIXME: Don't hardcode this check | |||
2418 | if (OA && isa<OwnershipAttr>(i)) | |||
2419 | return OA->getOwnKind() == cast<OwnershipAttr>(i)->getOwnKind(); | |||
2420 | return true; | |||
2421 | } | |||
2422 | ||||
2423 | return false; | |||
2424 | } | |||
2425 | ||||
2426 | static bool isAttributeTargetADefinition(Decl *D) { | |||
2427 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) | |||
2428 | return VD->isThisDeclarationADefinition(); | |||
2429 | if (TagDecl *TD = dyn_cast<TagDecl>(D)) | |||
2430 | return TD->isCompleteDefinition() || TD->isBeingDefined(); | |||
2431 | return true; | |||
2432 | } | |||
2433 | ||||
2434 | /// Merge alignment attributes from \p Old to \p New, taking into account the | |||
2435 | /// special semantics of C11's _Alignas specifier and C++11's alignas attribute. | |||
2436 | /// | |||
2437 | /// \return \c true if any attributes were added to \p New. | |||
2438 | static bool mergeAlignedAttrs(Sema &S, NamedDecl *New, Decl *Old) { | |||
2439 | // Look for alignas attributes on Old, and pick out whichever attribute | |||
2440 | // specifies the strictest alignment requirement. | |||
2441 | AlignedAttr *OldAlignasAttr = nullptr; | |||
2442 | AlignedAttr *OldStrictestAlignAttr = nullptr; | |||
2443 | unsigned OldAlign = 0; | |||
2444 | for (auto *I : Old->specific_attrs<AlignedAttr>()) { | |||
2445 | // FIXME: We have no way of representing inherited dependent alignments | |||
2446 | // in a case like: | |||
2447 | // template<int A, int B> struct alignas(A) X; | |||
2448 | // template<int A, int B> struct alignas(B) X {}; | |||
2449 | // For now, we just ignore any alignas attributes which are not on the | |||
2450 | // definition in such a case. | |||
2451 | if (I->isAlignmentDependent()) | |||
2452 | return false; | |||
2453 | ||||
2454 | if (I->isAlignas()) | |||
2455 | OldAlignasAttr = I; | |||
2456 | ||||
2457 | unsigned Align = I->getAlignment(S.Context); | |||
2458 | if (Align > OldAlign) { | |||
2459 | OldAlign = Align; | |||
2460 | OldStrictestAlignAttr = I; | |||
2461 | } | |||
2462 | } | |||
2463 | ||||
2464 | // Look for alignas attributes on New. | |||
2465 | AlignedAttr *NewAlignasAttr = nullptr; | |||
2466 | unsigned NewAlign = 0; | |||
2467 | for (auto *I : New->specific_attrs<AlignedAttr>()) { | |||
2468 | if (I->isAlignmentDependent()) | |||
2469 | return false; | |||
2470 | ||||
2471 | if (I->isAlignas()) | |||
2472 | NewAlignasAttr = I; | |||
2473 | ||||
2474 | unsigned Align = I->getAlignment(S.Context); | |||
2475 | if (Align > NewAlign) | |||
2476 | NewAlign = Align; | |||
2477 | } | |||
2478 | ||||
2479 | if (OldAlignasAttr && NewAlignasAttr && OldAlign != NewAlign) { | |||
2480 | // Both declarations have 'alignas' attributes. We require them to match. | |||
2481 | // C++11 [dcl.align]p6 and C11 6.7.5/7 both come close to saying this, but | |||
2482 | // fall short. (If two declarations both have alignas, they must both match | |||
2483 | // every definition, and so must match each other if there is a definition.) | |||
2484 | ||||
2485 | // If either declaration only contains 'alignas(0)' specifiers, then it | |||
2486 | // specifies the natural alignment for the type. | |||
2487 | if (OldAlign == 0 || NewAlign == 0) { | |||
2488 | QualType Ty; | |||
2489 | if (ValueDecl *VD = dyn_cast<ValueDecl>(New)) | |||
2490 | Ty = VD->getType(); | |||
2491 | else | |||
2492 | Ty = S.Context.getTagDeclType(cast<TagDecl>(New)); | |||
2493 | ||||
2494 | if (OldAlign == 0) | |||
2495 | OldAlign = S.Context.getTypeAlign(Ty); | |||
2496 | if (NewAlign == 0) | |||
2497 | NewAlign = S.Context.getTypeAlign(Ty); | |||
2498 | } | |||
2499 | ||||
2500 | if (OldAlign != NewAlign) { | |||
2501 | S.Diag(NewAlignasAttr->getLocation(), diag::err_alignas_mismatch) | |||
2502 | << (unsigned)S.Context.toCharUnitsFromBits(OldAlign).getQuantity() | |||
2503 | << (unsigned)S.Context.toCharUnitsFromBits(NewAlign).getQuantity(); | |||
2504 | S.Diag(OldAlignasAttr->getLocation(), diag::note_previous_declaration); | |||
2505 | } | |||
2506 | } | |||
2507 | ||||
2508 | if (OldAlignasAttr && !NewAlignasAttr && isAttributeTargetADefinition(New)) { | |||
2509 | // C++11 [dcl.align]p6: | |||
2510 | // if any declaration of an entity has an alignment-specifier, | |||
2511 | // every defining declaration of that entity shall specify an | |||
2512 | // equivalent alignment. | |||
2513 | // C11 6.7.5/7: | |||
2514 | // If the definition of an object does not have an alignment | |||
2515 | // specifier, any other declaration of that object shall also | |||
2516 | // have no alignment specifier. | |||
2517 | S.Diag(New->getLocation(), diag::err_alignas_missing_on_definition) | |||
2518 | << OldAlignasAttr; | |||
2519 | S.Diag(OldAlignasAttr->getLocation(), diag::note_alignas_on_declaration) | |||
2520 | << OldAlignasAttr; | |||
2521 | } | |||
2522 | ||||
2523 | bool AnyAdded = false; | |||
2524 | ||||
2525 | // Ensure we have an attribute representing the strictest alignment. | |||
2526 | if (OldAlign > NewAlign) { | |||
2527 | AlignedAttr *Clone = OldStrictestAlignAttr->clone(S.Context); | |||
2528 | Clone->setInherited(true); | |||
2529 | New->addAttr(Clone); | |||
2530 | AnyAdded = true; | |||
2531 | } | |||
2532 | ||||
2533 | // Ensure we have an alignas attribute if the old declaration had one. | |||
2534 | if (OldAlignasAttr && !NewAlignasAttr && | |||
2535 | !(AnyAdded && OldStrictestAlignAttr->isAlignas())) { | |||
2536 | AlignedAttr *Clone = OldAlignasAttr->clone(S.Context); | |||
2537 | Clone->setInherited(true); | |||
2538 | New->addAttr(Clone); | |||
2539 | AnyAdded = true; | |||
2540 | } | |||
2541 | ||||
2542 | return AnyAdded; | |||
2543 | } | |||
2544 | ||||
2545 | static bool mergeDeclAttribute(Sema &S, NamedDecl *D, | |||
2546 | const InheritableAttr *Attr, | |||
2547 | Sema::AvailabilityMergeKind AMK) { | |||
2548 | // This function copies an attribute Attr from a previous declaration to the | |||
2549 | // new declaration D if the new declaration doesn't itself have that attribute | |||
2550 | // yet or if that attribute allows duplicates. | |||
2551 | // If you're adding a new attribute that requires logic different from | |||
2552 | // "use explicit attribute on decl if present, else use attribute from | |||
2553 | // previous decl", for example if the attribute needs to be consistent | |||
2554 | // between redeclarations, you need to call a custom merge function here. | |||
2555 | InheritableAttr *NewAttr = nullptr; | |||
2556 | if (const auto *AA = dyn_cast<AvailabilityAttr>(Attr)) | |||
2557 | NewAttr = S.mergeAvailabilityAttr( | |||
2558 | D, *AA, AA->getPlatform(), AA->isImplicit(), AA->getIntroduced(), | |||
2559 | AA->getDeprecated(), AA->getObsoleted(), AA->getUnavailable(), | |||
2560 | AA->getMessage(), AA->getStrict(), AA->getReplacement(), AMK, | |||
2561 | AA->getPriority()); | |||
2562 | else if (const auto *VA = dyn_cast<VisibilityAttr>(Attr)) | |||
2563 | NewAttr = S.mergeVisibilityAttr(D, *VA, VA->getVisibility()); | |||
2564 | else if (const auto *VA = dyn_cast<TypeVisibilityAttr>(Attr)) | |||
2565 | NewAttr = S.mergeTypeVisibilityAttr(D, *VA, VA->getVisibility()); | |||
2566 | else if (const auto *ImportA = dyn_cast<DLLImportAttr>(Attr)) | |||
2567 | NewAttr = S.mergeDLLImportAttr(D, *ImportA); | |||
2568 | else if (const auto *ExportA = dyn_cast<DLLExportAttr>(Attr)) | |||
2569 | NewAttr = S.mergeDLLExportAttr(D, *ExportA); | |||
2570 | else if (const auto *FA = dyn_cast<FormatAttr>(Attr)) | |||
2571 | NewAttr = S.mergeFormatAttr(D, *FA, FA->getType(), FA->getFormatIdx(), | |||
2572 | FA->getFirstArg()); | |||
2573 | else if (const auto *SA = dyn_cast<SectionAttr>(Attr)) | |||
2574 | NewAttr = S.mergeSectionAttr(D, *SA, SA->getName()); | |||
2575 | else if (const auto *CSA = dyn_cast<CodeSegAttr>(Attr)) | |||
2576 | NewAttr = S.mergeCodeSegAttr(D, *CSA, CSA->getName()); | |||
2577 | else if (const auto *IA = dyn_cast<MSInheritanceAttr>(Attr)) | |||
2578 | NewAttr = S.mergeMSInheritanceAttr(D, *IA, IA->getBestCase(), | |||
2579 | IA->getInheritanceModel()); | |||
2580 | else if (const auto *AA = dyn_cast<AlwaysInlineAttr>(Attr)) | |||
2581 | NewAttr = S.mergeAlwaysInlineAttr(D, *AA, | |||
2582 | &S.Context.Idents.get(AA->getSpelling())); | |||
2583 | else if (S.getLangOpts().CUDA && isa<FunctionDecl>(D) && | |||
2584 | (isa<CUDAHostAttr>(Attr) || isa<CUDADeviceAttr>(Attr) || | |||
2585 | isa<CUDAGlobalAttr>(Attr))) { | |||
2586 | // CUDA target attributes are part of function signature for | |||
2587 | // overloading purposes and must not be merged. | |||
2588 | return false; | |||
2589 | } else if (const auto *MA = dyn_cast<MinSizeAttr>(Attr)) | |||
2590 | NewAttr = S.mergeMinSizeAttr(D, *MA); | |||
2591 | else if (const auto *SNA = dyn_cast<SwiftNameAttr>(Attr)) | |||
2592 | NewAttr = S.mergeSwiftNameAttr(D, *SNA, SNA->getName()); | |||
2593 | else if (const auto *OA = dyn_cast<OptimizeNoneAttr>(Attr)) | |||
2594 | NewAttr = S.mergeOptimizeNoneAttr(D, *OA); | |||
2595 | else if (const auto *InternalLinkageA = dyn_cast<InternalLinkageAttr>(Attr)) | |||
2596 | NewAttr = S.mergeInternalLinkageAttr(D, *InternalLinkageA); | |||
2597 | else if (const auto *CommonA = dyn_cast<CommonAttr>(Attr)) | |||
2598 | NewAttr = S.mergeCommonAttr(D, *CommonA); | |||
2599 | else if (isa<AlignedAttr>(Attr)) | |||
2600 | // AlignedAttrs are handled separately, because we need to handle all | |||
2601 | // such attributes on a declaration at the same time. | |||
2602 | NewAttr = nullptr; | |||
2603 | else if ((isa<DeprecatedAttr>(Attr) || isa<UnavailableAttr>(Attr)) && | |||
2604 | (AMK == Sema::AMK_Override || | |||
2605 | AMK == Sema::AMK_ProtocolImplementation)) | |||
2606 | NewAttr = nullptr; | |||
2607 | else if (const auto *UA = dyn_cast<UuidAttr>(Attr)) | |||
2608 | NewAttr = S.mergeUuidAttr(D, *UA, UA->getGuid(), UA->getGuidDecl()); | |||
2609 | else if (const auto *SLHA = dyn_cast<SpeculativeLoadHardeningAttr>(Attr)) | |||
2610 | NewAttr = S.mergeSpeculativeLoadHardeningAttr(D, *SLHA); | |||
2611 | else if (const auto *SLHA = dyn_cast<NoSpeculativeLoadHardeningAttr>(Attr)) | |||
2612 | NewAttr = S.mergeNoSpeculativeLoadHardeningAttr(D, *SLHA); | |||
2613 | else if (const auto *IMA = dyn_cast<WebAssemblyImportModuleAttr>(Attr)) | |||
2614 | NewAttr = S.mergeImportModuleAttr(D, *IMA); | |||
2615 | else if (const auto *INA = dyn_cast<WebAssemblyImportNameAttr>(Attr)) | |||
2616 | NewAttr = S.mergeImportNameAttr(D, *INA); | |||
2617 | else if (Attr->shouldInheritEvenIfAlreadyPresent() || !DeclHasAttr(D, Attr)) | |||
2618 | NewAttr = cast<InheritableAttr>(Attr->clone(S.Context)); | |||
2619 | ||||
2620 | if (NewAttr) { | |||
2621 | NewAttr->setInherited(true); | |||
2622 | D->addAttr(NewAttr); | |||
2623 | if (isa<MSInheritanceAttr>(NewAttr)) | |||
2624 | S.Consumer.AssignInheritanceModel(cast<CXXRecordDecl>(D)); | |||
2625 | return true; | |||
2626 | } | |||
2627 | ||||
2628 | return false; | |||
2629 | } | |||
2630 | ||||
2631 | static const NamedDecl *getDefinition(const Decl *D) { | |||
2632 | if (const TagDecl *TD = dyn_cast<TagDecl>(D)) | |||
2633 | return TD->getDefinition(); | |||
2634 | if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { | |||
2635 | const VarDecl *Def = VD->getDefinition(); | |||
2636 | if (Def) | |||
2637 | return Def; | |||
2638 | return VD->getActingDefinition(); | |||
2639 | } | |||
2640 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | |||
2641 | const FunctionDecl *Def = nullptr; | |||
2642 | if (FD->isDefined(Def, true)) | |||
2643 | return Def; | |||
2644 | } | |||
2645 | return nullptr; | |||
2646 | } | |||
2647 | ||||
2648 | static bool hasAttribute(const Decl *D, attr::Kind Kind) { | |||
2649 | for (const auto *Attribute : D->attrs()) | |||
2650 | if (Attribute->getKind() == Kind) | |||
2651 | return true; | |||
2652 | return false; | |||
2653 | } | |||
2654 | ||||
2655 | /// checkNewAttributesAfterDef - If we already have a definition, check that | |||
2656 | /// there are no new attributes in this declaration. | |||
2657 | static void checkNewAttributesAfterDef(Sema &S, Decl *New, const Decl *Old) { | |||
2658 | if (!New->hasAttrs()) | |||
2659 | return; | |||
2660 | ||||
2661 | const NamedDecl *Def = getDefinition(Old); | |||
2662 | if (!Def || Def == New) | |||
2663 | return; | |||
2664 | ||||
2665 | AttrVec &NewAttributes = New->getAttrs(); | |||
2666 | for (unsigned I = 0, E = NewAttributes.size(); I != E;) { | |||
2667 | const Attr *NewAttribute = NewAttributes[I]; | |||
2668 | ||||
2669 | if (isa<AliasAttr>(NewAttribute) || isa<IFuncAttr>(NewAttribute)) { | |||
2670 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(New)) { | |||
2671 | Sema::SkipBodyInfo SkipBody; | |||
2672 | S.CheckForFunctionRedefinition(FD, cast<FunctionDecl>(Def), &SkipBody); | |||
2673 | ||||
2674 | // If we're skipping this definition, drop the "alias" attribute. | |||
2675 | if (SkipBody.ShouldSkip) { | |||
2676 | NewAttributes.erase(NewAttributes.begin() + I); | |||
2677 | --E; | |||
2678 | continue; | |||
2679 | } | |||
2680 | } else { | |||
2681 | VarDecl *VD = cast<VarDecl>(New); | |||
2682 | unsigned Diag = cast<VarDecl>(Def)->isThisDeclarationADefinition() == | |||
2683 | VarDecl::TentativeDefinition | |||
2684 | ? diag::err_alias_after_tentative | |||
2685 | : diag::err_redefinition; | |||
2686 | S.Diag(VD->getLocation(), Diag) << VD->getDeclName(); | |||
2687 | if (Diag == diag::err_redefinition) | |||
2688 | S.notePreviousDefinition(Def, VD->getLocation()); | |||
2689 | else | |||
2690 | S.Diag(Def->getLocation(), diag::note_previous_definition); | |||
2691 | VD->setInvalidDecl(); | |||
2692 | } | |||
2693 | ++I; | |||
2694 | continue; | |||
2695 | } | |||
2696 | ||||
2697 | if (const VarDecl *VD = dyn_cast<VarDecl>(Def)) { | |||
2698 | // Tentative definitions are only interesting for the alias check above. | |||
2699 | if (VD->isThisDeclarationADefinition() != VarDecl::Definition) { | |||
2700 | ++I; | |||
2701 | continue; | |||
2702 | } | |||
2703 | } | |||
2704 | ||||
2705 | if (hasAttribute(Def, NewAttribute->getKind())) { | |||
2706 | ++I; | |||
2707 | continue; // regular attr merging will take care of validating this. | |||
2708 | } | |||
2709 | ||||
2710 | if (isa<C11NoReturnAttr>(NewAttribute)) { | |||
2711 | // C's _Noreturn is allowed to be added to a function after it is defined. | |||
2712 | ++I; | |||
2713 | continue; | |||
2714 | } else if (isa<UuidAttr>(NewAttribute)) { | |||
2715 | // msvc will allow a subsequent definition to add an uuid to a class | |||
2716 | ++I; | |||
2717 | continue; | |||
2718 | } else if (const AlignedAttr *AA = dyn_cast<AlignedAttr>(NewAttribute)) { | |||
2719 | if (AA->isAlignas()) { | |||
2720 | // C++11 [dcl.align]p6: | |||
2721 | // if any declaration of an entity has an alignment-specifier, | |||
2722 | // every defining declaration of that entity shall specify an | |||
2723 | // equivalent alignment. | |||
2724 | // C11 6.7.5/7: | |||
2725 | // If the definition of an object does not have an alignment | |||
2726 | // specifier, any other declaration of that object shall also | |||
2727 | // have no alignment specifier. | |||
2728 | S.Diag(Def->getLocation(), diag::err_alignas_missing_on_definition) | |||
2729 | << AA; | |||
2730 | S.Diag(NewAttribute->getLocation(), diag::note_alignas_on_declaration) | |||
2731 | << AA; | |||
2732 | NewAttributes.erase(NewAttributes.begin() + I); | |||
2733 | --E; | |||
2734 | continue; | |||
2735 | } | |||
2736 | } else if (isa<LoaderUninitializedAttr>(NewAttribute)) { | |||
2737 | // If there is a C definition followed by a redeclaration with this | |||
2738 | // attribute then there are two different definitions. In C++, prefer the | |||
2739 | // standard diagnostics. | |||
2740 | if (!S.getLangOpts().CPlusPlus) { | |||
2741 | S.Diag(NewAttribute->getLocation(), | |||
2742 | diag::err_loader_uninitialized_redeclaration); | |||
2743 | S.Diag(Def->getLocation(), diag::note_previous_definition); | |||
2744 | NewAttributes.erase(NewAttributes.begin() + I); | |||
2745 | --E; | |||
2746 | continue; | |||
2747 | } | |||
2748 | } else if (isa<SelectAnyAttr>(NewAttribute) && | |||
2749 | cast<VarDecl>(New)->isInline() && | |||
2750 | !cast<VarDecl>(New)->isInlineSpecified()) { | |||
2751 | // Don't warn about applying selectany to implicitly inline variables. | |||
2752 | // Older compilers and language modes would require the use of selectany | |||
2753 | // to make such variables inline, and it would have no effect if we | |||
2754 | // honored it. | |||
2755 | ++I; | |||
2756 | continue; | |||
2757 | } else if (isa<OMPDeclareVariantAttr>(NewAttribute)) { | |||
2758 | // We allow to add OMP[Begin]DeclareVariantAttr to be added to | |||
2759 | // declarations after defintions. | |||
2760 | ++I; | |||
2761 | continue; | |||
2762 | } | |||
2763 | ||||
2764 | S.Diag(NewAttribute->getLocation(), | |||
2765 | diag::warn_attribute_precede_definition); | |||
2766 | S.Diag(Def->getLocation(), diag::note_previous_definition); | |||
2767 | NewAttributes.erase(NewAttributes.begin() + I); | |||
2768 | --E; | |||
2769 | } | |||
2770 | } | |||
2771 | ||||
2772 | static void diagnoseMissingConstinit(Sema &S, const VarDecl *InitDecl, | |||
2773 | const ConstInitAttr *CIAttr, | |||
2774 | bool AttrBeforeInit) { | |||
2775 | SourceLocation InsertLoc = InitDecl->getInnerLocStart(); | |||
2776 | ||||
2777 | // Figure out a good way to write this specifier on the old declaration. | |||
2778 | // FIXME: We should just use the spelling of CIAttr, but we don't preserve | |||
2779 | // enough of the attribute list spelling information to extract that without | |||
2780 | // heroics. | |||
2781 | std::string SuitableSpelling; | |||
2782 | if (S.getLangOpts().CPlusPlus20) | |||
2783 | SuitableSpelling = std::string( | |||
2784 | S.PP.getLastMacroWithSpelling(InsertLoc, {tok::kw_constinit})); | |||
2785 | if (SuitableSpelling.empty() && S.getLangOpts().CPlusPlus11) | |||
2786 | SuitableSpelling = std::string(S.PP.getLastMacroWithSpelling( | |||
2787 | InsertLoc, {tok::l_square, tok::l_square, | |||
2788 | S.PP.getIdentifierInfo("clang"), tok::coloncolon, | |||
2789 | S.PP.getIdentifierInfo("require_constant_initialization"), | |||
2790 | tok::r_square, tok::r_square})); | |||
2791 | if (SuitableSpelling.empty()) | |||
2792 | SuitableSpelling = std::string(S.PP.getLastMacroWithSpelling( | |||
2793 | InsertLoc, {tok::kw___attribute, tok::l_paren, tok::r_paren, | |||
2794 | S.PP.getIdentifierInfo("require_constant_initialization"), | |||
2795 | tok::r_paren, tok::r_paren})); | |||
2796 | if (SuitableSpelling.empty() && S.getLangOpts().CPlusPlus20) | |||
2797 | SuitableSpelling = "constinit"; | |||
2798 | if (SuitableSpelling.empty() && S.getLangOpts().CPlusPlus11) | |||
2799 | SuitableSpelling = "[[clang::require_constant_initialization]]"; | |||
2800 | if (SuitableSpelling.empty()) | |||
2801 | SuitableSpelling = "__attribute__((require_constant_initialization))"; | |||
2802 | SuitableSpelling += " "; | |||
2803 | ||||
2804 | if (AttrBeforeInit) { | |||
2805 | // extern constinit int a; | |||
2806 | // int a = 0; // error (missing 'constinit'), accepted as extension | |||
2807 | assert(CIAttr->isConstinit() && "should not diagnose this for attribute")((CIAttr->isConstinit() && "should not diagnose this for attribute" ) ? static_cast<void> (0) : __assert_fail ("CIAttr->isConstinit() && \"should not diagnose this for attribute\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 2807, __PRETTY_FUNCTION__)); | |||
2808 | S.Diag(InitDecl->getLocation(), diag::ext_constinit_missing) | |||
2809 | << InitDecl << FixItHint::CreateInsertion(InsertLoc, SuitableSpelling); | |||
2810 | S.Diag(CIAttr->getLocation(), diag::note_constinit_specified_here); | |||
2811 | } else { | |||
2812 | // int a = 0; | |||
2813 | // constinit extern int a; // error (missing 'constinit') | |||
2814 | S.Diag(CIAttr->getLocation(), | |||
2815 | CIAttr->isConstinit() ? diag::err_constinit_added_too_late | |||
2816 | : diag::warn_require_const_init_added_too_late) | |||
2817 | << FixItHint::CreateRemoval(SourceRange(CIAttr->getLocation())); | |||
2818 | S.Diag(InitDecl->getLocation(), diag::note_constinit_missing_here) | |||
2819 | << CIAttr->isConstinit() | |||
2820 | << FixItHint::CreateInsertion(InsertLoc, SuitableSpelling); | |||
2821 | } | |||
2822 | } | |||
2823 | ||||
2824 | /// mergeDeclAttributes - Copy attributes from the Old decl to the New one. | |||
2825 | void Sema::mergeDeclAttributes(NamedDecl *New, Decl *Old, | |||
2826 | AvailabilityMergeKind AMK) { | |||
2827 | if (UsedAttr *OldAttr = Old->getMostRecentDecl()->getAttr<UsedAttr>()) { | |||
2828 | UsedAttr *NewAttr = OldAttr->clone(Context); | |||
2829 | NewAttr->setInherited(true); | |||
2830 | New->addAttr(NewAttr); | |||
2831 | } | |||
2832 | ||||
2833 | if (!Old->hasAttrs() && !New->hasAttrs()) | |||
2834 | return; | |||
2835 | ||||
2836 | // [dcl.constinit]p1: | |||
2837 | // If the [constinit] specifier is applied to any declaration of a | |||
2838 | // variable, it shall be applied to the initializing declaration. | |||
2839 | const auto *OldConstInit = Old->getAttr<ConstInitAttr>(); | |||
2840 | const auto *NewConstInit = New->getAttr<ConstInitAttr>(); | |||
2841 | if (bool(OldConstInit) != bool(NewConstInit)) { | |||
2842 | const auto *OldVD = cast<VarDecl>(Old); | |||
2843 | auto *NewVD = cast<VarDecl>(New); | |||
2844 | ||||
2845 | // Find the initializing declaration. Note that we might not have linked | |||
2846 | // the new declaration into the redeclaration chain yet. | |||
2847 | const VarDecl *InitDecl = OldVD->getInitializingDeclaration(); | |||
2848 | if (!InitDecl && | |||
2849 | (NewVD->hasInit() || NewVD->isThisDeclarationADefinition())) | |||
2850 | InitDecl = NewVD; | |||
2851 | ||||
2852 | if (InitDecl == NewVD) { | |||
2853 | // This is the initializing declaration. If it would inherit 'constinit', | |||
2854 | // that's ill-formed. (Note that we do not apply this to the attribute | |||
2855 | // form). | |||
2856 | if (OldConstInit && OldConstInit->isConstinit()) | |||
2857 | diagnoseMissingConstinit(*this, NewVD, OldConstInit, | |||
2858 | /*AttrBeforeInit=*/true); | |||
2859 | } else if (NewConstInit) { | |||
2860 | // This is the first time we've been told that this declaration should | |||
2861 | // have a constant initializer. If we already saw the initializing | |||
2862 | // declaration, this is too late. | |||
2863 | if (InitDecl && InitDecl != NewVD) { | |||
2864 | diagnoseMissingConstinit(*this, InitDecl, NewConstInit, | |||
2865 | /*AttrBeforeInit=*/false); | |||
2866 | NewVD->dropAttr<ConstInitAttr>(); | |||
2867 | } | |||
2868 | } | |||
2869 | } | |||
2870 | ||||
2871 | // Attributes declared post-definition are currently ignored. | |||
2872 | checkNewAttributesAfterDef(*this, New, Old); | |||
2873 | ||||
2874 | if (AsmLabelAttr *NewA = New->getAttr<AsmLabelAttr>()) { | |||
2875 | if (AsmLabelAttr *OldA = Old->getAttr<AsmLabelAttr>()) { | |||
2876 | if (!OldA->isEquivalent(NewA)) { | |||
2877 | // This redeclaration changes __asm__ label. | |||
2878 | Diag(New->getLocation(), diag::err_different_asm_label); | |||
2879 | Diag(OldA->getLocation(), diag::note_previous_declaration); | |||
2880 | } | |||
2881 | } else if (Old->isUsed()) { | |||
2882 | // This redeclaration adds an __asm__ label to a declaration that has | |||
2883 | // already been ODR-used. | |||
2884 | Diag(New->getLocation(), diag::err_late_asm_label_name) | |||
2885 | << isa<FunctionDecl>(Old) << New->getAttr<AsmLabelAttr>()->getRange(); | |||
2886 | } | |||
2887 | } | |||
2888 | ||||
2889 | // Re-declaration cannot add abi_tag's. | |||
2890 | if (const auto *NewAbiTagAttr = New->getAttr<AbiTagAttr>()) { | |||
2891 | if (const auto *OldAbiTagAttr = Old->getAttr<AbiTagAttr>()) { | |||
2892 | for (const auto &NewTag : NewAbiTagAttr->tags()) { | |||
2893 | if (std::find(OldAbiTagAttr->tags_begin(), OldAbiTagAttr->tags_end(), | |||
2894 | NewTag) == OldAbiTagAttr->tags_end()) { | |||
2895 | Diag(NewAbiTagAttr->getLocation(), | |||
2896 | diag::err_new_abi_tag_on_redeclaration) | |||
2897 | << NewTag; | |||
2898 | Diag(OldAbiTagAttr->getLocation(), diag::note_previous_declaration); | |||
2899 | } | |||
2900 | } | |||
2901 | } else { | |||
2902 | Diag(NewAbiTagAttr->getLocation(), diag::err_abi_tag_on_redeclaration); | |||
2903 | Diag(Old->getLocation(), diag::note_previous_declaration); | |||
2904 | } | |||
2905 | } | |||
2906 | ||||
2907 | // This redeclaration adds a section attribute. | |||
2908 | if (New->hasAttr<SectionAttr>() && !Old->hasAttr<SectionAttr>()) { | |||
2909 | if (auto *VD = dyn_cast<VarDecl>(New)) { | |||
2910 | if (VD->isThisDeclarationADefinition() == VarDecl::DeclarationOnly) { | |||
2911 | Diag(New->getLocation(), diag::warn_attribute_section_on_redeclaration); | |||
2912 | Diag(Old->getLocation(), diag::note_previous_declaration); | |||
2913 | } | |||
2914 | } | |||
2915 | } | |||
2916 | ||||
2917 | // Redeclaration adds code-seg attribute. | |||
2918 | const auto *NewCSA = New->getAttr<CodeSegAttr>(); | |||
2919 | if (NewCSA && !Old->hasAttr<CodeSegAttr>() && | |||
2920 | !NewCSA->isImplicit() && isa<CXXMethodDecl>(New)) { | |||
2921 | Diag(New->getLocation(), diag::warn_mismatched_section) | |||
2922 | << 0 /*codeseg*/; | |||
2923 | Diag(Old->getLocation(), diag::note_previous_declaration); | |||
2924 | } | |||
2925 | ||||
2926 | if (!Old->hasAttrs()) | |||
2927 | return; | |||
2928 | ||||
2929 | bool foundAny = New->hasAttrs(); | |||
2930 | ||||
2931 | // Ensure that any moving of objects within the allocated map is done before | |||
2932 | // we process them. | |||
2933 | if (!foundAny) New->setAttrs(AttrVec()); | |||
2934 | ||||
2935 | for (auto *I : Old->specific_attrs<InheritableAttr>()) { | |||
2936 | // Ignore deprecated/unavailable/availability attributes if requested. | |||
2937 | AvailabilityMergeKind LocalAMK = AMK_None; | |||
2938 | if (isa<DeprecatedAttr>(I) || | |||
2939 | isa<UnavailableAttr>(I) || | |||
2940 | isa<AvailabilityAttr>(I)) { | |||
2941 | switch (AMK) { | |||
2942 | case AMK_None: | |||
2943 | continue; | |||
2944 | ||||
2945 | case AMK_Redeclaration: | |||
2946 | case AMK_Override: | |||
2947 | case AMK_ProtocolImplementation: | |||
2948 | LocalAMK = AMK; | |||
2949 | break; | |||
2950 | } | |||
2951 | } | |||
2952 | ||||
2953 | // Already handled. | |||
2954 | if (isa<UsedAttr>(I)) | |||
2955 | continue; | |||
2956 | ||||
2957 | if (mergeDeclAttribute(*this, New, I, LocalAMK)) | |||
2958 | foundAny = true; | |||
2959 | } | |||
2960 | ||||
2961 | if (mergeAlignedAttrs(*this, New, Old)) | |||
2962 | foundAny = true; | |||
2963 | ||||
2964 | if (!foundAny) New->dropAttrs(); | |||
2965 | } | |||
2966 | ||||
2967 | /// mergeParamDeclAttributes - Copy attributes from the old parameter | |||
2968 | /// to the new one. | |||
2969 | static void mergeParamDeclAttributes(ParmVarDecl *newDecl, | |||
2970 | const ParmVarDecl *oldDecl, | |||
2971 | Sema &S) { | |||
2972 | // C++11 [dcl.attr.depend]p2: | |||
2973 | // The first declaration of a function shall specify the | |||
2974 | // carries_dependency attribute for its declarator-id if any declaration | |||
2975 | // of the function specifies the carries_dependency attribute. | |||
2976 | const CarriesDependencyAttr *CDA = newDecl->getAttr<CarriesDependencyAttr>(); | |||
2977 | if (CDA && !oldDecl->hasAttr<CarriesDependencyAttr>()) { | |||
2978 | S.Diag(CDA->getLocation(), | |||
2979 | diag::err_carries_dependency_missing_on_first_decl) << 1/*Param*/; | |||
2980 | // Find the first declaration of the parameter. | |||
2981 | // FIXME: Should we build redeclaration chains for function parameters? | |||
2982 | const FunctionDecl *FirstFD = | |||
2983 | cast<FunctionDecl>(oldDecl->getDeclContext())->getFirstDecl(); | |||
2984 | const ParmVarDecl *FirstVD = | |||
2985 | FirstFD->getParamDecl(oldDecl->getFunctionScopeIndex()); | |||
2986 | S.Diag(FirstVD->getLocation(), | |||
2987 | diag::note_carries_dependency_missing_first_decl) << 1/*Param*/; | |||
2988 | } | |||
2989 | ||||
2990 | if (!oldDecl->hasAttrs()) | |||
2991 | return; | |||
2992 | ||||
2993 | bool foundAny = newDecl->hasAttrs(); | |||
2994 | ||||
2995 | // Ensure that any moving of objects within the allocated map is | |||
2996 | // done before we process them. | |||
2997 | if (!foundAny) newDecl->setAttrs(AttrVec()); | |||
2998 | ||||
2999 | for (const auto *I : oldDecl->specific_attrs<InheritableParamAttr>()) { | |||
3000 | if (!DeclHasAttr(newDecl, I)) { | |||
3001 | InheritableAttr *newAttr = | |||
3002 | cast<InheritableParamAttr>(I->clone(S.Context)); | |||
3003 | newAttr->setInherited(true); | |||
3004 | newDecl->addAttr(newAttr); | |||
3005 | foundAny = true; | |||
3006 | } | |||
3007 | } | |||
3008 | ||||
3009 | if (!foundAny) newDecl->dropAttrs(); | |||
3010 | } | |||
3011 | ||||
3012 | static void mergeParamDeclTypes(ParmVarDecl *NewParam, | |||
3013 | const ParmVarDecl *OldParam, | |||
3014 | Sema &S) { | |||
3015 | if (auto Oldnullability = OldParam->getType()->getNullability(S.Context)) { | |||
3016 | if (auto Newnullability = NewParam->getType()->getNullability(S.Context)) { | |||
3017 | if (*Oldnullability != *Newnullability) { | |||
3018 | S.Diag(NewParam->getLocation(), diag::warn_mismatched_nullability_attr) | |||
3019 | << DiagNullabilityKind( | |||
3020 | *Newnullability, | |||
3021 | ((NewParam->getObjCDeclQualifier() & Decl::OBJC_TQ_CSNullability) | |||
3022 | != 0)) | |||
3023 | << DiagNullabilityKind( | |||
3024 | *Oldnullability, | |||
3025 | ((OldParam->getObjCDeclQualifier() & Decl::OBJC_TQ_CSNullability) | |||
3026 | != 0)); | |||
3027 | S.Diag(OldParam->getLocation(), diag::note_previous_declaration); | |||
3028 | } | |||
3029 | } else { | |||
3030 | QualType NewT = NewParam->getType(); | |||
3031 | NewT = S.Context.getAttributedType( | |||
3032 | AttributedType::getNullabilityAttrKind(*Oldnullability), | |||
3033 | NewT, NewT); | |||
3034 | NewParam->setType(NewT); | |||
3035 | } | |||
3036 | } | |||
3037 | } | |||
3038 | ||||
3039 | namespace { | |||
3040 | ||||
3041 | /// Used in MergeFunctionDecl to keep track of function parameters in | |||
3042 | /// C. | |||
3043 | struct GNUCompatibleParamWarning { | |||
3044 | ParmVarDecl *OldParm; | |||
3045 | ParmVarDecl *NewParm; | |||
3046 | QualType PromotedType; | |||
3047 | }; | |||
3048 | ||||
3049 | } // end anonymous namespace | |||
3050 | ||||
3051 | // Determine whether the previous declaration was a definition, implicit | |||
3052 | // declaration, or a declaration. | |||
3053 | template <typename T> | |||
3054 | static std::pair<diag::kind, SourceLocation> | |||
3055 | getNoteDiagForInvalidRedeclaration(const T *Old, const T *New) { | |||
3056 | diag::kind PrevDiag; | |||
3057 | SourceLocation OldLocation = Old->getLocation(); | |||
3058 | if (Old->isThisDeclarationADefinition()) | |||
3059 | PrevDiag = diag::note_previous_definition; | |||
3060 | else if (Old->isImplicit()) { | |||
3061 | PrevDiag = diag::note_previous_implicit_declaration; | |||
3062 | if (OldLocation.isInvalid()) | |||
3063 | OldLocation = New->getLocation(); | |||
3064 | } else | |||
3065 | PrevDiag = diag::note_previous_declaration; | |||
3066 | return std::make_pair(PrevDiag, OldLocation); | |||
3067 | } | |||
3068 | ||||
3069 | /// canRedefineFunction - checks if a function can be redefined. Currently, | |||
3070 | /// only extern inline functions can be redefined, and even then only in | |||
3071 | /// GNU89 mode. | |||
3072 | static bool canRedefineFunction(const FunctionDecl *FD, | |||
3073 | const LangOptions& LangOpts) { | |||
3074 | return ((FD->hasAttr<GNUInlineAttr>() || LangOpts.GNUInline) && | |||
3075 | !LangOpts.CPlusPlus && | |||
3076 | FD->isInlineSpecified() && | |||
3077 | FD->getStorageClass() == SC_Extern); | |||
3078 | } | |||
3079 | ||||
3080 | const AttributedType *Sema::getCallingConvAttributedType(QualType T) const { | |||
3081 | const AttributedType *AT = T->getAs<AttributedType>(); | |||
3082 | while (AT && !AT->isCallingConv()) | |||
3083 | AT = AT->getModifiedType()->getAs<AttributedType>(); | |||
3084 | return AT; | |||
3085 | } | |||
3086 | ||||
3087 | template <typename T> | |||
3088 | static bool haveIncompatibleLanguageLinkages(const T *Old, const T *New) { | |||
3089 | const DeclContext *DC = Old->getDeclContext(); | |||
3090 | if (DC->isRecord()) | |||
3091 | return false; | |||
3092 | ||||
3093 | LanguageLinkage OldLinkage = Old->getLanguageLinkage(); | |||
3094 | if (OldLinkage == CXXLanguageLinkage && New->isInExternCContext()) | |||
3095 | return true; | |||
3096 | if (OldLinkage == CLanguageLinkage && New->isInExternCXXContext()) | |||
3097 | return true; | |||
3098 | return false; | |||
3099 | } | |||
3100 | ||||
3101 | template<typename T> static bool isExternC(T *D) { return D->isExternC(); } | |||
3102 | static bool isExternC(VarTemplateDecl *) { return false; } | |||
3103 | ||||
3104 | /// Check whether a redeclaration of an entity introduced by a | |||
3105 | /// using-declaration is valid, given that we know it's not an overload | |||
3106 | /// (nor a hidden tag declaration). | |||
3107 | template<typename ExpectedDecl> | |||
3108 | static bool checkUsingShadowRedecl(Sema &S, UsingShadowDecl *OldS, | |||
3109 | ExpectedDecl *New) { | |||
3110 | // C++11 [basic.scope.declarative]p4: | |||
3111 | // Given a set of declarations in a single declarative region, each of | |||
3112 | // which specifies the same unqualified name, | |||
3113 | // -- they shall all refer to the same entity, or all refer to functions | |||
3114 | // and function templates; or | |||
3115 | // -- exactly one declaration shall declare a class name or enumeration | |||
3116 | // name that is not a typedef name and the other declarations shall all | |||
3117 | // refer to the same variable or enumerator, or all refer to functions | |||
3118 | // and function templates; in this case the class name or enumeration | |||
3119 | // name is hidden (3.3.10). | |||
3120 | ||||
3121 | // C++11 [namespace.udecl]p14: | |||
3122 | // If a function declaration in namespace scope or block scope has the | |||
3123 | // same name and the same parameter-type-list as a function introduced | |||
3124 | // by a using-declaration, and the declarations do not declare the same | |||
3125 | // function, the program is ill-formed. | |||
3126 | ||||
3127 | auto *Old = dyn_cast<ExpectedDecl>(OldS->getTargetDecl()); | |||
3128 | if (Old && | |||
3129 | !Old->getDeclContext()->getRedeclContext()->Equals( | |||
3130 | New->getDeclContext()->getRedeclContext()) && | |||
3131 | !(isExternC(Old) && isExternC(New))) | |||
3132 | Old = nullptr; | |||
3133 | ||||
3134 | if (!Old) { | |||
3135 | S.Diag(New->getLocation(), diag::err_using_decl_conflict_reverse); | |||
3136 | S.Diag(OldS->getTargetDecl()->getLocation(), diag::note_using_decl_target); | |||
3137 | S.Diag(OldS->getUsingDecl()->getLocation(), diag::note_using_decl) << 0; | |||
3138 | return true; | |||
3139 | } | |||
3140 | return false; | |||
3141 | } | |||
3142 | ||||
3143 | static bool hasIdenticalPassObjectSizeAttrs(const FunctionDecl *A, | |||
3144 | const FunctionDecl *B) { | |||
3145 | assert(A->getNumParams() == B->getNumParams())((A->getNumParams() == B->getNumParams()) ? static_cast <void> (0) : __assert_fail ("A->getNumParams() == B->getNumParams()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3145, __PRETTY_FUNCTION__)); | |||
3146 | ||||
3147 | auto AttrEq = [](const ParmVarDecl *A, const ParmVarDecl *B) { | |||
3148 | const auto *AttrA = A->getAttr<PassObjectSizeAttr>(); | |||
3149 | const auto *AttrB = B->getAttr<PassObjectSizeAttr>(); | |||
3150 | if (AttrA == AttrB) | |||
3151 | return true; | |||
3152 | return AttrA && AttrB && AttrA->getType() == AttrB->getType() && | |||
3153 | AttrA->isDynamic() == AttrB->isDynamic(); | |||
3154 | }; | |||
3155 | ||||
3156 | return std::equal(A->param_begin(), A->param_end(), B->param_begin(), AttrEq); | |||
3157 | } | |||
3158 | ||||
3159 | /// If necessary, adjust the semantic declaration context for a qualified | |||
3160 | /// declaration to name the correct inline namespace within the qualifier. | |||
3161 | static void adjustDeclContextForDeclaratorDecl(DeclaratorDecl *NewD, | |||
3162 | DeclaratorDecl *OldD) { | |||
3163 | // The only case where we need to update the DeclContext is when | |||
3164 | // redeclaration lookup for a qualified name finds a declaration | |||
3165 | // in an inline namespace within the context named by the qualifier: | |||
3166 | // | |||
3167 | // inline namespace N { int f(); } | |||
3168 | // int ::f(); // Sema DC needs adjusting from :: to N::. | |||
3169 | // | |||
3170 | // For unqualified declarations, the semantic context *can* change | |||
3171 | // along the redeclaration chain (for local extern declarations, | |||
3172 | // extern "C" declarations, and friend declarations in particular). | |||
3173 | if (!NewD->getQualifier()) | |||
3174 | return; | |||
3175 | ||||
3176 | // NewD is probably already in the right context. | |||
3177 | auto *NamedDC = NewD->getDeclContext()->getRedeclContext(); | |||
3178 | auto *SemaDC = OldD->getDeclContext()->getRedeclContext(); | |||
3179 | if (NamedDC->Equals(SemaDC)) | |||
3180 | return; | |||
3181 | ||||
3182 | assert((NamedDC->InEnclosingNamespaceSetOf(SemaDC) ||(((NamedDC->InEnclosingNamespaceSetOf(SemaDC) || NewD-> isInvalidDecl() || OldD->isInvalidDecl()) && "unexpected context for redeclaration" ) ? static_cast<void> (0) : __assert_fail ("(NamedDC->InEnclosingNamespaceSetOf(SemaDC) || NewD->isInvalidDecl() || OldD->isInvalidDecl()) && \"unexpected context for redeclaration\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3184, __PRETTY_FUNCTION__)) | |||
3183 | NewD->isInvalidDecl() || OldD->isInvalidDecl()) &&(((NamedDC->InEnclosingNamespaceSetOf(SemaDC) || NewD-> isInvalidDecl() || OldD->isInvalidDecl()) && "unexpected context for redeclaration" ) ? static_cast<void> (0) : __assert_fail ("(NamedDC->InEnclosingNamespaceSetOf(SemaDC) || NewD->isInvalidDecl() || OldD->isInvalidDecl()) && \"unexpected context for redeclaration\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3184, __PRETTY_FUNCTION__)) | |||
3184 | "unexpected context for redeclaration")(((NamedDC->InEnclosingNamespaceSetOf(SemaDC) || NewD-> isInvalidDecl() || OldD->isInvalidDecl()) && "unexpected context for redeclaration" ) ? static_cast<void> (0) : __assert_fail ("(NamedDC->InEnclosingNamespaceSetOf(SemaDC) || NewD->isInvalidDecl() || OldD->isInvalidDecl()) && \"unexpected context for redeclaration\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3184, __PRETTY_FUNCTION__)); | |||
3185 | ||||
3186 | auto *LexDC = NewD->getLexicalDeclContext(); | |||
3187 | auto FixSemaDC = [=](NamedDecl *D) { | |||
3188 | if (!D) | |||
3189 | return; | |||
3190 | D->setDeclContext(SemaDC); | |||
3191 | D->setLexicalDeclContext(LexDC); | |||
3192 | }; | |||
3193 | ||||
3194 | FixSemaDC(NewD); | |||
3195 | if (auto *FD = dyn_cast<FunctionDecl>(NewD)) | |||
3196 | FixSemaDC(FD->getDescribedFunctionTemplate()); | |||
3197 | else if (auto *VD = dyn_cast<VarDecl>(NewD)) | |||
3198 | FixSemaDC(VD->getDescribedVarTemplate()); | |||
3199 | } | |||
3200 | ||||
3201 | /// MergeFunctionDecl - We just parsed a function 'New' from | |||
3202 | /// declarator D which has the same name and scope as a previous | |||
3203 | /// declaration 'Old'. Figure out how to resolve this situation, | |||
3204 | /// merging decls or emitting diagnostics as appropriate. | |||
3205 | /// | |||
3206 | /// In C++, New and Old must be declarations that are not | |||
3207 | /// overloaded. Use IsOverload to determine whether New and Old are | |||
3208 | /// overloaded, and to select the Old declaration that New should be | |||
3209 | /// merged with. | |||
3210 | /// | |||
3211 | /// Returns true if there was an error, false otherwise. | |||
3212 | bool Sema::MergeFunctionDecl(FunctionDecl *New, NamedDecl *&OldD, | |||
3213 | Scope *S, bool MergeTypeWithOld) { | |||
3214 | // Verify the old decl was also a function. | |||
3215 | FunctionDecl *Old = OldD->getAsFunction(); | |||
3216 | if (!Old) { | |||
3217 | if (UsingShadowDecl *Shadow = dyn_cast<UsingShadowDecl>(OldD)) { | |||
3218 | if (New->getFriendObjectKind()) { | |||
3219 | Diag(New->getLocation(), diag::err_using_decl_friend); | |||
3220 | Diag(Shadow->getTargetDecl()->getLocation(), | |||
3221 | diag::note_using_decl_target); | |||
3222 | Diag(Shadow->getUsingDecl()->getLocation(), | |||
3223 | diag::note_using_decl) << 0; | |||
3224 | return true; | |||
3225 | } | |||
3226 | ||||
3227 | // Check whether the two declarations might declare the same function. | |||
3228 | if (checkUsingShadowRedecl<FunctionDecl>(*this, Shadow, New)) | |||
3229 | return true; | |||
3230 | OldD = Old = cast<FunctionDecl>(Shadow->getTargetDecl()); | |||
3231 | } else { | |||
3232 | Diag(New->getLocation(), diag::err_redefinition_different_kind) | |||
3233 | << New->getDeclName(); | |||
3234 | notePreviousDefinition(OldD, New->getLocation()); | |||
3235 | return true; | |||
3236 | } | |||
3237 | } | |||
3238 | ||||
3239 | // If the old declaration is invalid, just give up here. | |||
3240 | if (Old->isInvalidDecl()) | |||
3241 | return true; | |||
3242 | ||||
3243 | // Disallow redeclaration of some builtins. | |||
3244 | if (!getASTContext().canBuiltinBeRedeclared(Old)) { | |||
3245 | Diag(New->getLocation(), diag::err_builtin_redeclare) << Old->getDeclName(); | |||
3246 | Diag(Old->getLocation(), diag::note_previous_builtin_declaration) | |||
3247 | << Old << Old->getType(); | |||
3248 | return true; | |||
3249 | } | |||
3250 | ||||
3251 | diag::kind PrevDiag; | |||
3252 | SourceLocation OldLocation; | |||
3253 | std::tie(PrevDiag, OldLocation) = | |||
3254 | getNoteDiagForInvalidRedeclaration(Old, New); | |||
3255 | ||||
3256 | // Don't complain about this if we're in GNU89 mode and the old function | |||
3257 | // is an extern inline function. | |||
3258 | // Don't complain about specializations. They are not supposed to have | |||
3259 | // storage classes. | |||
3260 | if (!isa<CXXMethodDecl>(New) && !isa<CXXMethodDecl>(Old) && | |||
3261 | New->getStorageClass() == SC_Static && | |||
3262 | Old->hasExternalFormalLinkage() && | |||
3263 | !New->getTemplateSpecializationInfo() && | |||
3264 | !canRedefineFunction(Old, getLangOpts())) { | |||
3265 | if (getLangOpts().MicrosoftExt) { | |||
3266 | Diag(New->getLocation(), diag::ext_static_non_static) << New; | |||
3267 | Diag(OldLocation, PrevDiag); | |||
3268 | } else { | |||
3269 | Diag(New->getLocation(), diag::err_static_non_static) << New; | |||
3270 | Diag(OldLocation, PrevDiag); | |||
3271 | return true; | |||
3272 | } | |||
3273 | } | |||
3274 | ||||
3275 | if (New->hasAttr<InternalLinkageAttr>() && | |||
3276 | !Old->hasAttr<InternalLinkageAttr>()) { | |||
3277 | Diag(New->getLocation(), diag::err_internal_linkage_redeclaration) | |||
3278 | << New->getDeclName(); | |||
3279 | notePreviousDefinition(Old, New->getLocation()); | |||
3280 | New->dropAttr<InternalLinkageAttr>(); | |||
3281 | } | |||
3282 | ||||
3283 | if (CheckRedeclarationModuleOwnership(New, Old)) | |||
3284 | return true; | |||
3285 | ||||
3286 | if (!getLangOpts().CPlusPlus) { | |||
3287 | bool OldOvl = Old->hasAttr<OverloadableAttr>(); | |||
3288 | if (OldOvl != New->hasAttr<OverloadableAttr>() && !Old->isImplicit()) { | |||
3289 | Diag(New->getLocation(), diag::err_attribute_overloadable_mismatch) | |||
3290 | << New << OldOvl; | |||
3291 | ||||
3292 | // Try our best to find a decl that actually has the overloadable | |||
3293 | // attribute for the note. In most cases (e.g. programs with only one | |||
3294 | // broken declaration/definition), this won't matter. | |||
3295 | // | |||
3296 | // FIXME: We could do this if we juggled some extra state in | |||
3297 | // OverloadableAttr, rather than just removing it. | |||
3298 | const Decl *DiagOld = Old; | |||
3299 | if (OldOvl) { | |||
3300 | auto OldIter = llvm::find_if(Old->redecls(), [](const Decl *D) { | |||
3301 | const auto *A = D->getAttr<OverloadableAttr>(); | |||
3302 | return A && !A->isImplicit(); | |||
3303 | }); | |||
3304 | // If we've implicitly added *all* of the overloadable attrs to this | |||
3305 | // chain, emitting a "previous redecl" note is pointless. | |||
3306 | DiagOld = OldIter == Old->redecls_end() ? nullptr : *OldIter; | |||
3307 | } | |||
3308 | ||||
3309 | if (DiagOld) | |||
3310 | Diag(DiagOld->getLocation(), | |||
3311 | diag::note_attribute_overloadable_prev_overload) | |||
3312 | << OldOvl; | |||
3313 | ||||
3314 | if (OldOvl) | |||
3315 | New->addAttr(OverloadableAttr::CreateImplicit(Context)); | |||
3316 | else | |||
3317 | New->dropAttr<OverloadableAttr>(); | |||
3318 | } | |||
3319 | } | |||
3320 | ||||
3321 | // If a function is first declared with a calling convention, but is later | |||
3322 | // declared or defined without one, all following decls assume the calling | |||
3323 | // convention of the first. | |||
3324 | // | |||
3325 | // It's OK if a function is first declared without a calling convention, | |||
3326 | // but is later declared or defined with the default calling convention. | |||
3327 | // | |||
3328 | // To test if either decl has an explicit calling convention, we look for | |||
3329 | // AttributedType sugar nodes on the type as written. If they are missing or | |||
3330 | // were canonicalized away, we assume the calling convention was implicit. | |||
3331 | // | |||
3332 | // Note also that we DO NOT return at this point, because we still have | |||
3333 | // other tests to run. | |||
3334 | QualType OldQType = Context.getCanonicalType(Old->getType()); | |||
3335 | QualType NewQType = Context.getCanonicalType(New->getType()); | |||
3336 | const FunctionType *OldType = cast<FunctionType>(OldQType); | |||
3337 | const FunctionType *NewType = cast<FunctionType>(NewQType); | |||
3338 | FunctionType::ExtInfo OldTypeInfo = OldType->getExtInfo(); | |||
3339 | FunctionType::ExtInfo NewTypeInfo = NewType->getExtInfo(); | |||
3340 | bool RequiresAdjustment = false; | |||
3341 | ||||
3342 | if (OldTypeInfo.getCC() != NewTypeInfo.getCC()) { | |||
3343 | FunctionDecl *First = Old->getFirstDecl(); | |||
3344 | const FunctionType *FT = | |||
3345 | First->getType().getCanonicalType()->castAs<FunctionType>(); | |||
3346 | FunctionType::ExtInfo FI = FT->getExtInfo(); | |||
3347 | bool NewCCExplicit = getCallingConvAttributedType(New->getType()); | |||
3348 | if (!NewCCExplicit) { | |||
3349 | // Inherit the CC from the previous declaration if it was specified | |||
3350 | // there but not here. | |||
3351 | NewTypeInfo = NewTypeInfo.withCallingConv(OldTypeInfo.getCC()); | |||
3352 | RequiresAdjustment = true; | |||
3353 | } else if (Old->getBuiltinID()) { | |||
3354 | // Builtin attribute isn't propagated to the new one yet at this point, | |||
3355 | // so we check if the old one is a builtin. | |||
3356 | ||||
3357 | // Calling Conventions on a Builtin aren't really useful and setting a | |||
3358 | // default calling convention and cdecl'ing some builtin redeclarations is | |||
3359 | // common, so warn and ignore the calling convention on the redeclaration. | |||
3360 | Diag(New->getLocation(), diag::warn_cconv_unsupported) | |||
3361 | << FunctionType::getNameForCallConv(NewTypeInfo.getCC()) | |||
3362 | << (int)CallingConventionIgnoredReason::BuiltinFunction; | |||
3363 | NewTypeInfo = NewTypeInfo.withCallingConv(OldTypeInfo.getCC()); | |||
3364 | RequiresAdjustment = true; | |||
3365 | } else { | |||
3366 | // Calling conventions aren't compatible, so complain. | |||
3367 | bool FirstCCExplicit = getCallingConvAttributedType(First->getType()); | |||
3368 | Diag(New->getLocation(), diag::err_cconv_change) | |||
3369 | << FunctionType::getNameForCallConv(NewTypeInfo.getCC()) | |||
3370 | << !FirstCCExplicit | |||
3371 | << (!FirstCCExplicit ? "" : | |||
3372 | FunctionType::getNameForCallConv(FI.getCC())); | |||
3373 | ||||
3374 | // Put the note on the first decl, since it is the one that matters. | |||
3375 | Diag(First->getLocation(), diag::note_previous_declaration); | |||
3376 | return true; | |||
3377 | } | |||
3378 | } | |||
3379 | ||||
3380 | // FIXME: diagnose the other way around? | |||
3381 | if (OldTypeInfo.getNoReturn() && !NewTypeInfo.getNoReturn()) { | |||
3382 | NewTypeInfo = NewTypeInfo.withNoReturn(true); | |||
3383 | RequiresAdjustment = true; | |||
3384 | } | |||
3385 | ||||
3386 | // Merge regparm attribute. | |||
3387 | if (OldTypeInfo.getHasRegParm() != NewTypeInfo.getHasRegParm() || | |||
3388 | OldTypeInfo.getRegParm() != NewTypeInfo.getRegParm()) { | |||
3389 | if (NewTypeInfo.getHasRegParm()) { | |||
3390 | Diag(New->getLocation(), diag::err_regparm_mismatch) | |||
3391 | << NewType->getRegParmType() | |||
3392 | << OldType->getRegParmType(); | |||
3393 | Diag(OldLocation, diag::note_previous_declaration); | |||
3394 | return true; | |||
3395 | } | |||
3396 | ||||
3397 | NewTypeInfo = NewTypeInfo.withRegParm(OldTypeInfo.getRegParm()); | |||
3398 | RequiresAdjustment = true; | |||
3399 | } | |||
3400 | ||||
3401 | // Merge ns_returns_retained attribute. | |||
3402 | if (OldTypeInfo.getProducesResult() != NewTypeInfo.getProducesResult()) { | |||
3403 | if (NewTypeInfo.getProducesResult()) { | |||
3404 | Diag(New->getLocation(), diag::err_function_attribute_mismatch) | |||
3405 | << "'ns_returns_retained'"; | |||
3406 | Diag(OldLocation, diag::note_previous_declaration); | |||
3407 | return true; | |||
3408 | } | |||
3409 | ||||
3410 | NewTypeInfo = NewTypeInfo.withProducesResult(true); | |||
3411 | RequiresAdjustment = true; | |||
3412 | } | |||
3413 | ||||
3414 | if (OldTypeInfo.getNoCallerSavedRegs() != | |||
3415 | NewTypeInfo.getNoCallerSavedRegs()) { | |||
3416 | if (NewTypeInfo.getNoCallerSavedRegs()) { | |||
3417 | AnyX86NoCallerSavedRegistersAttr *Attr = | |||
3418 | New->getAttr<AnyX86NoCallerSavedRegistersAttr>(); | |||
3419 | Diag(New->getLocation(), diag::err_function_attribute_mismatch) << Attr; | |||
3420 | Diag(OldLocation, diag::note_previous_declaration); | |||
3421 | return true; | |||
3422 | } | |||
3423 | ||||
3424 | NewTypeInfo = NewTypeInfo.withNoCallerSavedRegs(true); | |||
3425 | RequiresAdjustment = true; | |||
3426 | } | |||
3427 | ||||
3428 | if (RequiresAdjustment) { | |||
3429 | const FunctionType *AdjustedType = New->getType()->getAs<FunctionType>(); | |||
3430 | AdjustedType = Context.adjustFunctionType(AdjustedType, NewTypeInfo); | |||
3431 | New->setType(QualType(AdjustedType, 0)); | |||
3432 | NewQType = Context.getCanonicalType(New->getType()); | |||
3433 | } | |||
3434 | ||||
3435 | // If this redeclaration makes the function inline, we may need to add it to | |||
3436 | // UndefinedButUsed. | |||
3437 | if (!Old->isInlined() && New->isInlined() && | |||
3438 | !New->hasAttr<GNUInlineAttr>() && | |||
3439 | !getLangOpts().GNUInline && | |||
3440 | Old->isUsed(false) && | |||
3441 | !Old->isDefined() && !New->isThisDeclarationADefinition()) | |||
3442 | UndefinedButUsed.insert(std::make_pair(Old->getCanonicalDecl(), | |||
3443 | SourceLocation())); | |||
3444 | ||||
3445 | // If this redeclaration makes it newly gnu_inline, we don't want to warn | |||
3446 | // about it. | |||
3447 | if (New->hasAttr<GNUInlineAttr>() && | |||
3448 | Old->isInlined() && !Old->hasAttr<GNUInlineAttr>()) { | |||
3449 | UndefinedButUsed.erase(Old->getCanonicalDecl()); | |||
3450 | } | |||
3451 | ||||
3452 | // If pass_object_size params don't match up perfectly, this isn't a valid | |||
3453 | // redeclaration. | |||
3454 | if (Old->getNumParams() > 0 && Old->getNumParams() == New->getNumParams() && | |||
3455 | !hasIdenticalPassObjectSizeAttrs(Old, New)) { | |||
3456 | Diag(New->getLocation(), diag::err_different_pass_object_size_params) | |||
3457 | << New->getDeclName(); | |||
3458 | Diag(OldLocation, PrevDiag) << Old << Old->getType(); | |||
3459 | return true; | |||
3460 | } | |||
3461 | ||||
3462 | if (getLangOpts().CPlusPlus) { | |||
3463 | // C++1z [over.load]p2 | |||
3464 | // Certain function declarations cannot be overloaded: | |||
3465 | // -- Function declarations that differ only in the return type, | |||
3466 | // the exception specification, or both cannot be overloaded. | |||
3467 | ||||
3468 | // Check the exception specifications match. This may recompute the type of | |||
3469 | // both Old and New if it resolved exception specifications, so grab the | |||
3470 | // types again after this. Because this updates the type, we do this before | |||
3471 | // any of the other checks below, which may update the "de facto" NewQType | |||
3472 | // but do not necessarily update the type of New. | |||
3473 | if (CheckEquivalentExceptionSpec(Old, New)) | |||
3474 | return true; | |||
3475 | OldQType = Context.getCanonicalType(Old->getType()); | |||
3476 | NewQType = Context.getCanonicalType(New->getType()); | |||
3477 | ||||
3478 | // Go back to the type source info to compare the declared return types, | |||
3479 | // per C++1y [dcl.type.auto]p13: | |||
3480 | // Redeclarations or specializations of a function or function template | |||
3481 | // with a declared return type that uses a placeholder type shall also | |||
3482 | // use that placeholder, not a deduced type. | |||
3483 | QualType OldDeclaredReturnType = Old->getDeclaredReturnType(); | |||
3484 | QualType NewDeclaredReturnType = New->getDeclaredReturnType(); | |||
3485 | if (!Context.hasSameType(OldDeclaredReturnType, NewDeclaredReturnType) && | |||
3486 | canFullyTypeCheckRedeclaration(New, Old, NewDeclaredReturnType, | |||
3487 | OldDeclaredReturnType)) { | |||
3488 | QualType ResQT; | |||
3489 | if (NewDeclaredReturnType->isObjCObjectPointerType() && | |||
3490 | OldDeclaredReturnType->isObjCObjectPointerType()) | |||
3491 | // FIXME: This does the wrong thing for a deduced return type. | |||
3492 | ResQT = Context.mergeObjCGCQualifiers(NewQType, OldQType); | |||
3493 | if (ResQT.isNull()) { | |||
3494 | if (New->isCXXClassMember() && New->isOutOfLine()) | |||
3495 | Diag(New->getLocation(), diag::err_member_def_does_not_match_ret_type) | |||
3496 | << New << New->getReturnTypeSourceRange(); | |||
3497 | else | |||
3498 | Diag(New->getLocation(), diag::err_ovl_diff_return_type) | |||
3499 | << New->getReturnTypeSourceRange(); | |||
3500 | Diag(OldLocation, PrevDiag) << Old << Old->getType() | |||
3501 | << Old->getReturnTypeSourceRange(); | |||
3502 | return true; | |||
3503 | } | |||
3504 | else | |||
3505 | NewQType = ResQT; | |||
3506 | } | |||
3507 | ||||
3508 | QualType OldReturnType = OldType->getReturnType(); | |||
3509 | QualType NewReturnType = cast<FunctionType>(NewQType)->getReturnType(); | |||
3510 | if (OldReturnType != NewReturnType) { | |||
3511 | // If this function has a deduced return type and has already been | |||
3512 | // defined, copy the deduced value from the old declaration. | |||
3513 | AutoType *OldAT = Old->getReturnType()->getContainedAutoType(); | |||
3514 | if (OldAT && OldAT->isDeduced()) { | |||
3515 | New->setType( | |||
3516 | SubstAutoType(New->getType(), | |||
3517 | OldAT->isDependentType() ? Context.DependentTy | |||
3518 | : OldAT->getDeducedType())); | |||
3519 | NewQType = Context.getCanonicalType( | |||
3520 | SubstAutoType(NewQType, | |||
3521 | OldAT->isDependentType() ? Context.DependentTy | |||
3522 | : OldAT->getDeducedType())); | |||
3523 | } | |||
3524 | } | |||
3525 | ||||
3526 | const CXXMethodDecl *OldMethod = dyn_cast<CXXMethodDecl>(Old); | |||
3527 | CXXMethodDecl *NewMethod = dyn_cast<CXXMethodDecl>(New); | |||
3528 | if (OldMethod && NewMethod) { | |||
3529 | // Preserve triviality. | |||
3530 | NewMethod->setTrivial(OldMethod->isTrivial()); | |||
3531 | ||||
3532 | // MSVC allows explicit template specialization at class scope: | |||
3533 | // 2 CXXMethodDecls referring to the same function will be injected. | |||
3534 | // We don't want a redeclaration error. | |||
3535 | bool IsClassScopeExplicitSpecialization = | |||
3536 | OldMethod->isFunctionTemplateSpecialization() && | |||
3537 | NewMethod->isFunctionTemplateSpecialization(); | |||
3538 | bool isFriend = NewMethod->getFriendObjectKind(); | |||
3539 | ||||
3540 | if (!isFriend && NewMethod->getLexicalDeclContext()->isRecord() && | |||
3541 | !IsClassScopeExplicitSpecialization) { | |||
3542 | // -- Member function declarations with the same name and the | |||
3543 | // same parameter types cannot be overloaded if any of them | |||
3544 | // is a static member function declaration. | |||
3545 | if (OldMethod->isStatic() != NewMethod->isStatic()) { | |||
3546 | Diag(New->getLocation(), diag::err_ovl_static_nonstatic_member); | |||
3547 | Diag(OldLocation, PrevDiag) << Old << Old->getType(); | |||
3548 | return true; | |||
3549 | } | |||
3550 | ||||
3551 | // C++ [class.mem]p1: | |||
3552 | // [...] A member shall not be declared twice in the | |||
3553 | // member-specification, except that a nested class or member | |||
3554 | // class template can be declared and then later defined. | |||
3555 | if (!inTemplateInstantiation()) { | |||
3556 | unsigned NewDiag; | |||
3557 | if (isa<CXXConstructorDecl>(OldMethod)) | |||
3558 | NewDiag = diag::err_constructor_redeclared; | |||
3559 | else if (isa<CXXDestructorDecl>(NewMethod)) | |||
3560 | NewDiag = diag::err_destructor_redeclared; | |||
3561 | else if (isa<CXXConversionDecl>(NewMethod)) | |||
3562 | NewDiag = diag::err_conv_function_redeclared; | |||
3563 | else | |||
3564 | NewDiag = diag::err_member_redeclared; | |||
3565 | ||||
3566 | Diag(New->getLocation(), NewDiag); | |||
3567 | } else { | |||
3568 | Diag(New->getLocation(), diag::err_member_redeclared_in_instantiation) | |||
3569 | << New << New->getType(); | |||
3570 | } | |||
3571 | Diag(OldLocation, PrevDiag) << Old << Old->getType(); | |||
3572 | return true; | |||
3573 | ||||
3574 | // Complain if this is an explicit declaration of a special | |||
3575 | // member that was initially declared implicitly. | |||
3576 | // | |||
3577 | // As an exception, it's okay to befriend such methods in order | |||
3578 | // to permit the implicit constructor/destructor/operator calls. | |||
3579 | } else if (OldMethod->isImplicit()) { | |||
3580 | if (isFriend) { | |||
3581 | NewMethod->setImplicit(); | |||
3582 | } else { | |||
3583 | Diag(NewMethod->getLocation(), | |||
3584 | diag::err_definition_of_implicitly_declared_member) | |||
3585 | << New << getSpecialMember(OldMethod); | |||
3586 | return true; | |||
3587 | } | |||
3588 | } else if (OldMethod->getFirstDecl()->isExplicitlyDefaulted() && !isFriend) { | |||
3589 | Diag(NewMethod->getLocation(), | |||
3590 | diag::err_definition_of_explicitly_defaulted_member) | |||
3591 | << getSpecialMember(OldMethod); | |||
3592 | return true; | |||
3593 | } | |||
3594 | } | |||
3595 | ||||
3596 | // C++11 [dcl.attr.noreturn]p1: | |||
3597 | // The first declaration of a function shall specify the noreturn | |||
3598 | // attribute if any declaration of that function specifies the noreturn | |||
3599 | // attribute. | |||
3600 | const CXX11NoReturnAttr *NRA = New->getAttr<CXX11NoReturnAttr>(); | |||
3601 | if (NRA && !Old->hasAttr<CXX11NoReturnAttr>()) { | |||
3602 | Diag(NRA->getLocation(), diag::err_noreturn_missing_on_first_decl); | |||
3603 | Diag(Old->getFirstDecl()->getLocation(), | |||
3604 | diag::note_noreturn_missing_first_decl); | |||
3605 | } | |||
3606 | ||||
3607 | // C++11 [dcl.attr.depend]p2: | |||
3608 | // The first declaration of a function shall specify the | |||
3609 | // carries_dependency attribute for its declarator-id if any declaration | |||
3610 | // of the function specifies the carries_dependency attribute. | |||
3611 | const CarriesDependencyAttr *CDA = New->getAttr<CarriesDependencyAttr>(); | |||
3612 | if (CDA && !Old->hasAttr<CarriesDependencyAttr>()) { | |||
3613 | Diag(CDA->getLocation(), | |||
3614 | diag::err_carries_dependency_missing_on_first_decl) << 0/*Function*/; | |||
3615 | Diag(Old->getFirstDecl()->getLocation(), | |||
3616 | diag::note_carries_dependency_missing_first_decl) << 0/*Function*/; | |||
3617 | } | |||
3618 | ||||
3619 | // (C++98 8.3.5p3): | |||
3620 | // All declarations for a function shall agree exactly in both the | |||
3621 | // return type and the parameter-type-list. | |||
3622 | // We also want to respect all the extended bits except noreturn. | |||
3623 | ||||
3624 | // noreturn should now match unless the old type info didn't have it. | |||
3625 | QualType OldQTypeForComparison = OldQType; | |||
3626 | if (!OldTypeInfo.getNoReturn() && NewTypeInfo.getNoReturn()) { | |||
3627 | auto *OldType = OldQType->castAs<FunctionProtoType>(); | |||
3628 | const FunctionType *OldTypeForComparison | |||
3629 | = Context.adjustFunctionType(OldType, OldTypeInfo.withNoReturn(true)); | |||
3630 | OldQTypeForComparison = QualType(OldTypeForComparison, 0); | |||
3631 | assert(OldQTypeForComparison.isCanonical())((OldQTypeForComparison.isCanonical()) ? static_cast<void> (0) : __assert_fail ("OldQTypeForComparison.isCanonical()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3631, __PRETTY_FUNCTION__)); | |||
3632 | } | |||
3633 | ||||
3634 | if (haveIncompatibleLanguageLinkages(Old, New)) { | |||
3635 | // As a special case, retain the language linkage from previous | |||
3636 | // declarations of a friend function as an extension. | |||
3637 | // | |||
3638 | // This liberal interpretation of C++ [class.friend]p3 matches GCC/MSVC | |||
3639 | // and is useful because there's otherwise no way to specify language | |||
3640 | // linkage within class scope. | |||
3641 | // | |||
3642 | // Check cautiously as the friend object kind isn't yet complete. | |||
3643 | if (New->getFriendObjectKind() != Decl::FOK_None) { | |||
3644 | Diag(New->getLocation(), diag::ext_retained_language_linkage) << New; | |||
3645 | Diag(OldLocation, PrevDiag); | |||
3646 | } else { | |||
3647 | Diag(New->getLocation(), diag::err_different_language_linkage) << New; | |||
3648 | Diag(OldLocation, PrevDiag); | |||
3649 | return true; | |||
3650 | } | |||
3651 | } | |||
3652 | ||||
3653 | // If the function types are compatible, merge the declarations. Ignore the | |||
3654 | // exception specifier because it was already checked above in | |||
3655 | // CheckEquivalentExceptionSpec, and we don't want follow-on diagnostics | |||
3656 | // about incompatible types under -fms-compatibility. | |||
3657 | if (Context.hasSameFunctionTypeIgnoringExceptionSpec(OldQTypeForComparison, | |||
3658 | NewQType)) | |||
3659 | return MergeCompatibleFunctionDecls(New, Old, S, MergeTypeWithOld); | |||
3660 | ||||
3661 | // If the types are imprecise (due to dependent constructs in friends or | |||
3662 | // local extern declarations), it's OK if they differ. We'll check again | |||
3663 | // during instantiation. | |||
3664 | if (!canFullyTypeCheckRedeclaration(New, Old, NewQType, OldQType)) | |||
3665 | return false; | |||
3666 | ||||
3667 | // Fall through for conflicting redeclarations and redefinitions. | |||
3668 | } | |||
3669 | ||||
3670 | // C: Function types need to be compatible, not identical. This handles | |||
3671 | // duplicate function decls like "void f(int); void f(enum X);" properly. | |||
3672 | if (!getLangOpts().CPlusPlus && | |||
3673 | Context.typesAreCompatible(OldQType, NewQType)) { | |||
3674 | const FunctionType *OldFuncType = OldQType->getAs<FunctionType>(); | |||
3675 | const FunctionType *NewFuncType = NewQType->getAs<FunctionType>(); | |||
3676 | const FunctionProtoType *OldProto = nullptr; | |||
3677 | if (MergeTypeWithOld && isa<FunctionNoProtoType>(NewFuncType) && | |||
3678 | (OldProto = dyn_cast<FunctionProtoType>(OldFuncType))) { | |||
3679 | // The old declaration provided a function prototype, but the | |||
3680 | // new declaration does not. Merge in the prototype. | |||
3681 | assert(!OldProto->hasExceptionSpec() && "Exception spec in C")((!OldProto->hasExceptionSpec() && "Exception spec in C" ) ? static_cast<void> (0) : __assert_fail ("!OldProto->hasExceptionSpec() && \"Exception spec in C\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3681, __PRETTY_FUNCTION__)); | |||
3682 | SmallVector<QualType, 16> ParamTypes(OldProto->param_types()); | |||
3683 | NewQType = | |||
3684 | Context.getFunctionType(NewFuncType->getReturnType(), ParamTypes, | |||
3685 | OldProto->getExtProtoInfo()); | |||
3686 | New->setType(NewQType); | |||
3687 | New->setHasInheritedPrototype(); | |||
3688 | ||||
3689 | // Synthesize parameters with the same types. | |||
3690 | SmallVector<ParmVarDecl*, 16> Params; | |||
3691 | for (const auto &ParamType : OldProto->param_types()) { | |||
3692 | ParmVarDecl *Param = ParmVarDecl::Create(Context, New, SourceLocation(), | |||
3693 | SourceLocation(), nullptr, | |||
3694 | ParamType, /*TInfo=*/nullptr, | |||
3695 | SC_None, nullptr); | |||
3696 | Param->setScopeInfo(0, Params.size()); | |||
3697 | Param->setImplicit(); | |||
3698 | Params.push_back(Param); | |||
3699 | } | |||
3700 | ||||
3701 | New->setParams(Params); | |||
3702 | } | |||
3703 | ||||
3704 | return MergeCompatibleFunctionDecls(New, Old, S, MergeTypeWithOld); | |||
3705 | } | |||
3706 | ||||
3707 | // Check if the function types are compatible when pointer size address | |||
3708 | // spaces are ignored. | |||
3709 | if (Context.hasSameFunctionTypeIgnoringPtrSizes(OldQType, NewQType)) | |||
3710 | return false; | |||
3711 | ||||
3712 | // GNU C permits a K&R definition to follow a prototype declaration | |||
3713 | // if the declared types of the parameters in the K&R definition | |||
3714 | // match the types in the prototype declaration, even when the | |||
3715 | // promoted types of the parameters from the K&R definition differ | |||
3716 | // from the types in the prototype. GCC then keeps the types from | |||
3717 | // the prototype. | |||
3718 | // | |||
3719 | // If a variadic prototype is followed by a non-variadic K&R definition, | |||
3720 | // the K&R definition becomes variadic. This is sort of an edge case, but | |||
3721 | // it's legal per the standard depending on how you read C99 6.7.5.3p15 and | |||
3722 | // C99 6.9.1p8. | |||
3723 | if (!getLangOpts().CPlusPlus && | |||
3724 | Old->hasPrototype() && !New->hasPrototype() && | |||
3725 | New->getType()->getAs<FunctionProtoType>() && | |||
3726 | Old->getNumParams() == New->getNumParams()) { | |||
3727 | SmallVector<QualType, 16> ArgTypes; | |||
3728 | SmallVector<GNUCompatibleParamWarning, 16> Warnings; | |||
3729 | const FunctionProtoType *OldProto | |||
3730 | = Old->getType()->getAs<FunctionProtoType>(); | |||
3731 | const FunctionProtoType *NewProto | |||
3732 | = New->getType()->getAs<FunctionProtoType>(); | |||
3733 | ||||
3734 | // Determine whether this is the GNU C extension. | |||
3735 | QualType MergedReturn = Context.mergeTypes(OldProto->getReturnType(), | |||
3736 | NewProto->getReturnType()); | |||
3737 | bool LooseCompatible = !MergedReturn.isNull(); | |||
3738 | for (unsigned Idx = 0, End = Old->getNumParams(); | |||
3739 | LooseCompatible && Idx != End; ++Idx) { | |||
3740 | ParmVarDecl *OldParm = Old->getParamDecl(Idx); | |||
3741 | ParmVarDecl *NewParm = New->getParamDecl(Idx); | |||
3742 | if (Context.typesAreCompatible(OldParm->getType(), | |||
3743 | NewProto->getParamType(Idx))) { | |||
3744 | ArgTypes.push_back(NewParm->getType()); | |||
3745 | } else if (Context.typesAreCompatible(OldParm->getType(), | |||
3746 | NewParm->getType(), | |||
3747 | /*CompareUnqualified=*/true)) { | |||
3748 | GNUCompatibleParamWarning Warn = { OldParm, NewParm, | |||
3749 | NewProto->getParamType(Idx) }; | |||
3750 | Warnings.push_back(Warn); | |||
3751 | ArgTypes.push_back(NewParm->getType()); | |||
3752 | } else | |||
3753 | LooseCompatible = false; | |||
3754 | } | |||
3755 | ||||
3756 | if (LooseCompatible) { | |||
3757 | for (unsigned Warn = 0; Warn < Warnings.size(); ++Warn) { | |||
3758 | Diag(Warnings[Warn].NewParm->getLocation(), | |||
3759 | diag::ext_param_promoted_not_compatible_with_prototype) | |||
3760 | << Warnings[Warn].PromotedType | |||
3761 | << Warnings[Warn].OldParm->getType(); | |||
3762 | if (Warnings[Warn].OldParm->getLocation().isValid()) | |||
3763 | Diag(Warnings[Warn].OldParm->getLocation(), | |||
3764 | diag::note_previous_declaration); | |||
3765 | } | |||
3766 | ||||
3767 | if (MergeTypeWithOld) | |||
3768 | New->setType(Context.getFunctionType(MergedReturn, ArgTypes, | |||
3769 | OldProto->getExtProtoInfo())); | |||
3770 | return MergeCompatibleFunctionDecls(New, Old, S, MergeTypeWithOld); | |||
3771 | } | |||
3772 | ||||
3773 | // Fall through to diagnose conflicting types. | |||
3774 | } | |||
3775 | ||||
3776 | // A function that has already been declared has been redeclared or | |||
3777 | // defined with a different type; show an appropriate diagnostic. | |||
3778 | ||||
3779 | // If the previous declaration was an implicitly-generated builtin | |||
3780 | // declaration, then at the very least we should use a specialized note. | |||
3781 | unsigned BuiltinID; | |||
3782 | if (Old->isImplicit() && (BuiltinID = Old->getBuiltinID())) { | |||
3783 | // If it's actually a library-defined builtin function like 'malloc' | |||
3784 | // or 'printf', just warn about the incompatible redeclaration. | |||
3785 | if (Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) { | |||
3786 | Diag(New->getLocation(), diag::warn_redecl_library_builtin) << New; | |||
3787 | Diag(OldLocation, diag::note_previous_builtin_declaration) | |||
3788 | << Old << Old->getType(); | |||
3789 | return false; | |||
3790 | } | |||
3791 | ||||
3792 | PrevDiag = diag::note_previous_builtin_declaration; | |||
3793 | } | |||
3794 | ||||
3795 | Diag(New->getLocation(), diag::err_conflicting_types) << New->getDeclName(); | |||
3796 | Diag(OldLocation, PrevDiag) << Old << Old->getType(); | |||
3797 | return true; | |||
3798 | } | |||
3799 | ||||
3800 | /// Completes the merge of two function declarations that are | |||
3801 | /// known to be compatible. | |||
3802 | /// | |||
3803 | /// This routine handles the merging of attributes and other | |||
3804 | /// properties of function declarations from the old declaration to | |||
3805 | /// the new declaration, once we know that New is in fact a | |||
3806 | /// redeclaration of Old. | |||
3807 | /// | |||
3808 | /// \returns false | |||
3809 | bool Sema::MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old, | |||
3810 | Scope *S, bool MergeTypeWithOld) { | |||
3811 | // Merge the attributes | |||
3812 | mergeDeclAttributes(New, Old); | |||
3813 | ||||
3814 | // Merge "pure" flag. | |||
3815 | if (Old->isPure()) | |||
3816 | New->setPure(); | |||
3817 | ||||
3818 | // Merge "used" flag. | |||
3819 | if (Old->getMostRecentDecl()->isUsed(false)) | |||
3820 | New->setIsUsed(); | |||
3821 | ||||
3822 | // Merge attributes from the parameters. These can mismatch with K&R | |||
3823 | // declarations. | |||
3824 | if (New->getNumParams() == Old->getNumParams()) | |||
3825 | for (unsigned i = 0, e = New->getNumParams(); i != e; ++i) { | |||
3826 | ParmVarDecl *NewParam = New->getParamDecl(i); | |||
3827 | ParmVarDecl *OldParam = Old->getParamDecl(i); | |||
3828 | mergeParamDeclAttributes(NewParam, OldParam, *this); | |||
3829 | mergeParamDeclTypes(NewParam, OldParam, *this); | |||
3830 | } | |||
3831 | ||||
3832 | if (getLangOpts().CPlusPlus) | |||
3833 | return MergeCXXFunctionDecl(New, Old, S); | |||
3834 | ||||
3835 | // Merge the function types so the we get the composite types for the return | |||
3836 | // and argument types. Per C11 6.2.7/4, only update the type if the old decl | |||
3837 | // was visible. | |||
3838 | QualType Merged = Context.mergeTypes(Old->getType(), New->getType()); | |||
3839 | if (!Merged.isNull() && MergeTypeWithOld) | |||
3840 | New->setType(Merged); | |||
3841 | ||||
3842 | return false; | |||
3843 | } | |||
3844 | ||||
3845 | void Sema::mergeObjCMethodDecls(ObjCMethodDecl *newMethod, | |||
3846 | ObjCMethodDecl *oldMethod) { | |||
3847 | // Merge the attributes, including deprecated/unavailable | |||
3848 | AvailabilityMergeKind MergeKind = | |||
3849 | isa<ObjCProtocolDecl>(oldMethod->getDeclContext()) | |||
3850 | ? AMK_ProtocolImplementation | |||
3851 | : isa<ObjCImplDecl>(newMethod->getDeclContext()) ? AMK_Redeclaration | |||
3852 | : AMK_Override; | |||
3853 | ||||
3854 | mergeDeclAttributes(newMethod, oldMethod, MergeKind); | |||
3855 | ||||
3856 | // Merge attributes from the parameters. | |||
3857 | ObjCMethodDecl::param_const_iterator oi = oldMethod->param_begin(), | |||
3858 | oe = oldMethod->param_end(); | |||
3859 | for (ObjCMethodDecl::param_iterator | |||
3860 | ni = newMethod->param_begin(), ne = newMethod->param_end(); | |||
3861 | ni != ne && oi != oe; ++ni, ++oi) | |||
3862 | mergeParamDeclAttributes(*ni, *oi, *this); | |||
3863 | ||||
3864 | CheckObjCMethodOverride(newMethod, oldMethod); | |||
3865 | } | |||
3866 | ||||
3867 | static void diagnoseVarDeclTypeMismatch(Sema &S, VarDecl *New, VarDecl* Old) { | |||
3868 | assert(!S.Context.hasSameType(New->getType(), Old->getType()))((!S.Context.hasSameType(New->getType(), Old->getType() )) ? static_cast<void> (0) : __assert_fail ("!S.Context.hasSameType(New->getType(), Old->getType())" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 3868, __PRETTY_FUNCTION__)); | |||
3869 | ||||
3870 | S.Diag(New->getLocation(), New->isThisDeclarationADefinition() | |||
3871 | ? diag::err_redefinition_different_type | |||
3872 | : diag::err_redeclaration_different_type) | |||
3873 | << New->getDeclName() << New->getType() << Old->getType(); | |||
3874 | ||||
3875 | diag::kind PrevDiag; | |||
3876 | SourceLocation OldLocation; | |||
3877 | std::tie(PrevDiag, OldLocation) | |||
3878 | = getNoteDiagForInvalidRedeclaration(Old, New); | |||
3879 | S.Diag(OldLocation, PrevDiag); | |||
3880 | New->setInvalidDecl(); | |||
3881 | } | |||
3882 | ||||
3883 | /// MergeVarDeclTypes - We parsed a variable 'New' which has the same name and | |||
3884 | /// scope as a previous declaration 'Old'. Figure out how to merge their types, | |||
3885 | /// emitting diagnostics as appropriate. | |||
3886 | /// | |||
3887 | /// Declarations using the auto type specifier (C++ [decl.spec.auto]) call back | |||
3888 | /// to here in AddInitializerToDecl. We can't check them before the initializer | |||
3889 | /// is attached. | |||
3890 | void Sema::MergeVarDeclTypes(VarDecl *New, VarDecl *Old, | |||
3891 | bool MergeTypeWithOld) { | |||
3892 | if (New->isInvalidDecl() || Old->isInvalidDecl()) | |||
3893 | return; | |||
3894 | ||||
3895 | QualType MergedT; | |||
3896 | if (getLangOpts().CPlusPlus) { | |||
3897 | if (New->getType()->isUndeducedType()) { | |||
3898 | // We don't know what the new type is until the initializer is attached. | |||
3899 | return; | |||
3900 | } else if (Context.hasSameType(New->getType(), Old->getType())) { | |||
3901 | // These could still be something that needs exception specs checked. | |||
3902 | return MergeVarDeclExceptionSpecs(New, Old); | |||
3903 | } | |||
3904 | // C++ [basic.link]p10: | |||
3905 | // [...] the types specified by all declarations referring to a given | |||
3906 | // object or function shall be identical, except that declarations for an | |||
3907 | // array object can specify array types that differ by the presence or | |||
3908 | // absence of a major array bound (8.3.4). | |||
3909 | else if (Old->getType()->isArrayType() && New->getType()->isArrayType()) { | |||
3910 | const ArrayType *OldArray = Context.getAsArrayType(Old->getType()); | |||
3911 | const ArrayType *NewArray = Context.getAsArrayType(New->getType()); | |||
3912 | ||||
3913 | // We are merging a variable declaration New into Old. If it has an array | |||
3914 | // bound, and that bound differs from Old's bound, we should diagnose the | |||
3915 | // mismatch. | |||
3916 | if (!NewArray->isIncompleteArrayType() && !NewArray->isDependentType()) { | |||
3917 | for (VarDecl *PrevVD = Old->getMostRecentDecl(); PrevVD; | |||
3918 | PrevVD = PrevVD->getPreviousDecl()) { | |||
3919 | QualType PrevVDTy = PrevVD->getType(); | |||
3920 | if (PrevVDTy->isIncompleteArrayType() || PrevVDTy->isDependentType()) | |||
3921 | continue; | |||
3922 | ||||
3923 | if (!Context.hasSameType(New->getType(), PrevVDTy)) | |||
3924 | return diagnoseVarDeclTypeMismatch(*this, New, PrevVD); | |||
3925 | } | |||
3926 | } | |||
3927 | ||||
3928 | if (OldArray->isIncompleteArrayType() && NewArray->isArrayType()) { | |||
3929 | if (Context.hasSameType(OldArray->getElementType(), | |||
3930 | NewArray->getElementType())) | |||
3931 | MergedT = New->getType(); | |||
3932 | } | |||
3933 | // FIXME: Check visibility. New is hidden but has a complete type. If New | |||
3934 | // has no array bound, it should not inherit one from Old, if Old is not | |||
3935 | // visible. | |||
3936 | else if (OldArray->isArrayType() && NewArray->isIncompleteArrayType()) { | |||
3937 | if (Context.hasSameType(OldArray->getElementType(), | |||
3938 | NewArray->getElementType())) | |||
3939 | MergedT = Old->getType(); | |||
3940 | } | |||
3941 | } | |||
3942 | else if (New->getType()->isObjCObjectPointerType() && | |||
3943 | Old->getType()->isObjCObjectPointerType()) { | |||
3944 | MergedT = Context.mergeObjCGCQualifiers(New->getType(), | |||
3945 | Old->getType()); | |||
3946 | } | |||
3947 | } else { | |||
3948 | // C 6.2.7p2: | |||
3949 | // All declarations that refer to the same object or function shall have | |||
3950 | // compatible type. | |||
3951 | MergedT = Context.mergeTypes(New->getType(), Old->getType()); | |||
3952 | } | |||
3953 | if (MergedT.isNull()) { | |||
3954 | // It's OK if we couldn't merge types if either type is dependent, for a | |||
3955 | // block-scope variable. In other cases (static data members of class | |||
3956 | // templates, variable templates, ...), we require the types to be | |||
3957 | // equivalent. | |||
3958 | // FIXME: The C++ standard doesn't say anything about this. | |||
3959 | if ((New->getType()->isDependentType() || | |||
3960 | Old->getType()->isDependentType()) && New->isLocalVarDecl()) { | |||
3961 | // If the old type was dependent, we can't merge with it, so the new type | |||
3962 | // becomes dependent for now. We'll reproduce the original type when we | |||
3963 | // instantiate the TypeSourceInfo for the variable. | |||
3964 | if (!New->getType()->isDependentType() && MergeTypeWithOld) | |||
3965 | New->setType(Context.DependentTy); | |||
3966 | return; | |||
3967 | } | |||
3968 | return diagnoseVarDeclTypeMismatch(*this, New, Old); | |||
3969 | } | |||
3970 | ||||
3971 | // Don't actually update the type on the new declaration if the old | |||
3972 | // declaration was an extern declaration in a different scope. | |||
3973 | if (MergeTypeWithOld) | |||
3974 | New->setType(MergedT); | |||
3975 | } | |||
3976 | ||||
3977 | static bool mergeTypeWithPrevious(Sema &S, VarDecl *NewVD, VarDecl *OldVD, | |||
3978 | LookupResult &Previous) { | |||
3979 | // C11 6.2.7p4: | |||
3980 | // For an identifier with internal or external linkage declared | |||
3981 | // in a scope in which a prior declaration of that identifier is | |||
3982 | // visible, if the prior declaration specifies internal or | |||
3983 | // external linkage, the type of the identifier at the later | |||
3984 | // declaration becomes the composite type. | |||
3985 | // | |||
3986 | // If the variable isn't visible, we do not merge with its type. | |||
3987 | if (Previous.isShadowed()) | |||
3988 | return false; | |||
3989 | ||||
3990 | if (S.getLangOpts().CPlusPlus) { | |||
3991 | // C++11 [dcl.array]p3: | |||
3992 | // If there is a preceding declaration of the entity in the same | |||
3993 | // scope in which the bound was specified, an omitted array bound | |||
3994 | // is taken to be the same as in that earlier declaration. | |||
3995 | return NewVD->isPreviousDeclInSameBlockScope() || | |||
3996 | (!OldVD->getLexicalDeclContext()->isFunctionOrMethod() && | |||
3997 | !NewVD->getLexicalDeclContext()->isFunctionOrMethod()); | |||
3998 | } else { | |||
3999 | // If the old declaration was function-local, don't merge with its | |||
4000 | // type unless we're in the same function. | |||
4001 | return !OldVD->getLexicalDeclContext()->isFunctionOrMethod() || | |||
4002 | OldVD->getLexicalDeclContext() == NewVD->getLexicalDeclContext(); | |||
4003 | } | |||
4004 | } | |||
4005 | ||||
4006 | /// MergeVarDecl - We just parsed a variable 'New' which has the same name | |||
4007 | /// and scope as a previous declaration 'Old'. Figure out how to resolve this | |||
4008 | /// situation, merging decls or emitting diagnostics as appropriate. | |||
4009 | /// | |||
4010 | /// Tentative definition rules (C99 6.9.2p2) are checked by | |||
4011 | /// FinalizeDeclaratorGroup. Unfortunately, we can't analyze tentative | |||
4012 | /// definitions here, since the initializer hasn't been attached. | |||
4013 | /// | |||
4014 | void Sema::MergeVarDecl(VarDecl *New, LookupResult &Previous) { | |||
4015 | // If the new decl is already invalid, don't do any other checking. | |||
4016 | if (New->isInvalidDecl()) | |||
4017 | return; | |||
4018 | ||||
4019 | if (!shouldLinkPossiblyHiddenDecl(Previous, New)) | |||
4020 | return; | |||
4021 | ||||
4022 | VarTemplateDecl *NewTemplate = New->getDescribedVarTemplate(); | |||
4023 | ||||
4024 | // Verify the old decl was also a variable or variable template. | |||
4025 | VarDecl *Old = nullptr; | |||
4026 | VarTemplateDecl *OldTemplate = nullptr; | |||
4027 | if (Previous.isSingleResult()) { | |||
4028 | if (NewTemplate) { | |||
4029 | OldTemplate = dyn_cast<VarTemplateDecl>(Previous.getFoundDecl()); | |||
4030 | Old = OldTemplate ? OldTemplate->getTemplatedDecl() : nullptr; | |||
4031 | ||||
4032 | if (auto *Shadow = | |||
4033 | dyn_cast<UsingShadowDecl>(Previous.getRepresentativeDecl())) | |||
4034 | if (checkUsingShadowRedecl<VarTemplateDecl>(*this, Shadow, NewTemplate)) | |||
4035 | return New->setInvalidDecl(); | |||
4036 | } else { | |||
4037 | Old = dyn_cast<VarDecl>(Previous.getFoundDecl()); | |||
4038 | ||||
4039 | if (auto *Shadow = | |||
4040 | dyn_cast<UsingShadowDecl>(Previous.getRepresentativeDecl())) | |||
4041 | if (checkUsingShadowRedecl<VarDecl>(*this, Shadow, New)) | |||
4042 | return New->setInvalidDecl(); | |||
4043 | } | |||
4044 | } | |||
4045 | if (!Old) { | |||
4046 | Diag(New->getLocation(), diag::err_redefinition_different_kind) | |||
4047 | << New->getDeclName(); | |||
4048 | notePreviousDefinition(Previous.getRepresentativeDecl(), | |||
4049 | New->getLocation()); | |||
4050 | return New->setInvalidDecl(); | |||
4051 | } | |||
4052 | ||||
4053 | // Ensure the template parameters are compatible. | |||
4054 | if (NewTemplate && | |||
4055 | !TemplateParameterListsAreEqual(NewTemplate->getTemplateParameters(), | |||
4056 | OldTemplate->getTemplateParameters(), | |||
4057 | /*Complain=*/true, TPL_TemplateMatch)) | |||
4058 | return New->setInvalidDecl(); | |||
4059 | ||||
4060 | // C++ [class.mem]p1: | |||
4061 | // A member shall not be declared twice in the member-specification [...] | |||
4062 | // | |||
4063 | // Here, we need only consider static data members. | |||
4064 | if (Old->isStaticDataMember() && !New->isOutOfLine()) { | |||
4065 | Diag(New->getLocation(), diag::err_duplicate_member) | |||
4066 | << New->getIdentifier(); | |||
4067 | Diag(Old->getLocation(), diag::note_previous_declaration); | |||
4068 | New->setInvalidDecl(); | |||
4069 | } | |||
4070 | ||||
4071 | mergeDeclAttributes(New, Old); | |||
4072 | // Warn if an already-declared variable is made a weak_import in a subsequent | |||
4073 | // declaration | |||
4074 | if (New->hasAttr<WeakImportAttr>() && | |||
4075 | Old->getStorageClass() == SC_None && | |||
4076 | !Old->hasAttr<WeakImportAttr>()) { | |||
4077 | Diag(New->getLocation(), diag::warn_weak_import) << New->getDeclName(); | |||
4078 | notePreviousDefinition(Old, New->getLocation()); | |||
4079 | // Remove weak_import attribute on new declaration. | |||
4080 | New->dropAttr<WeakImportAttr>(); | |||
4081 | } | |||
4082 | ||||
4083 | if (New->hasAttr<InternalLinkageAttr>() && | |||
4084 | !Old->hasAttr<InternalLinkageAttr>()) { | |||
4085 | Diag(New->getLocation(), diag::err_internal_linkage_redeclaration) | |||
4086 | << New->getDeclName(); | |||
4087 | notePreviousDefinition(Old, New->getLocation()); | |||
4088 | New->dropAttr<InternalLinkageAttr>(); | |||
4089 | } | |||
4090 | ||||
4091 | // Merge the types. | |||
4092 | VarDecl *MostRecent = Old->getMostRecentDecl(); | |||
4093 | if (MostRecent != Old) { | |||
4094 | MergeVarDeclTypes(New, MostRecent, | |||
4095 | mergeTypeWithPrevious(*this, New, MostRecent, Previous)); | |||
4096 | if (New->isInvalidDecl()) | |||
4097 | return; | |||
4098 | } | |||
4099 | ||||
4100 | MergeVarDeclTypes(New, Old, mergeTypeWithPrevious(*this, New, Old, Previous)); | |||
4101 | if (New->isInvalidDecl()) | |||
4102 | return; | |||
4103 | ||||
4104 | diag::kind PrevDiag; | |||
4105 | SourceLocation OldLocation; | |||
4106 | std::tie(PrevDiag, OldLocation) = | |||
4107 | getNoteDiagForInvalidRedeclaration(Old, New); | |||
4108 | ||||
4109 | // [dcl.stc]p8: Check if we have a non-static decl followed by a static. | |||
4110 | if (New->getStorageClass() == SC_Static && | |||
4111 | !New->isStaticDataMember() && | |||
4112 | Old->hasExternalFormalLinkage()) { | |||
4113 | if (getLangOpts().MicrosoftExt) { | |||
4114 | Diag(New->getLocation(), diag::ext_static_non_static) | |||
4115 | << New->getDeclName(); | |||
4116 | Diag(OldLocation, PrevDiag); | |||
4117 | } else { | |||
4118 | Diag(New->getLocation(), diag::err_static_non_static) | |||
4119 | << New->getDeclName(); | |||
4120 | Diag(OldLocation, PrevDiag); | |||
4121 | return New->setInvalidDecl(); | |||
4122 | } | |||
4123 | } | |||
4124 | // C99 6.2.2p4: | |||
4125 | // For an identifier declared with the storage-class specifier | |||
4126 | // extern in a scope in which a prior declaration of that | |||
4127 | // identifier is visible,23) if the prior declaration specifies | |||
4128 | // internal or external linkage, the linkage of the identifier at | |||
4129 | // the later declaration is the same as the linkage specified at | |||
4130 | // the prior declaration. If no prior declaration is visible, or | |||
4131 | // if the prior declaration specifies no linkage, then the | |||
4132 | // identifier has external linkage. | |||
4133 | if (New->hasExternalStorage() && Old->hasLinkage()) | |||
4134 | /* Okay */; | |||
4135 | else if (New->getCanonicalDecl()->getStorageClass() != SC_Static && | |||
4136 | !New->isStaticDataMember() && | |||
4137 | Old->getCanonicalDecl()->getStorageClass() == SC_Static) { | |||
4138 | Diag(New->getLocation(), diag::err_non_static_static) << New->getDeclName(); | |||
4139 | Diag(OldLocation, PrevDiag); | |||
4140 | return New->setInvalidDecl(); | |||
4141 | } | |||
4142 | ||||
4143 | // Check if extern is followed by non-extern and vice-versa. | |||
4144 | if (New->hasExternalStorage() && | |||
4145 | !Old->hasLinkage() && Old->isLocalVarDeclOrParm()) { | |||
4146 | Diag(New->getLocation(), diag::err_extern_non_extern) << New->getDeclName(); | |||
4147 | Diag(OldLocation, PrevDiag); | |||
4148 | return New->setInvalidDecl(); | |||
4149 | } | |||
4150 | if (Old->hasLinkage() && New->isLocalVarDeclOrParm() && | |||
4151 | !New->hasExternalStorage()) { | |||
4152 | Diag(New->getLocation(), diag::err_non_extern_extern) << New->getDeclName(); | |||
4153 | Diag(OldLocation, PrevDiag); | |||
4154 | return New->setInvalidDecl(); | |||
4155 | } | |||
4156 | ||||
4157 | if (CheckRedeclarationModuleOwnership(New, Old)) | |||
4158 | return; | |||
4159 | ||||
4160 | // Variables with external linkage are analyzed in FinalizeDeclaratorGroup. | |||
4161 | ||||
4162 | // FIXME: The test for external storage here seems wrong? We still | |||
4163 | // need to check for mismatches. | |||
4164 | if (!New->hasExternalStorage() && !New->isFileVarDecl() && | |||
4165 | // Don't complain about out-of-line definitions of static members. | |||
4166 | !(Old->getLexicalDeclContext()->isRecord() && | |||
4167 | !New->getLexicalDeclContext()->isRecord())) { | |||
4168 | Diag(New->getLocation(), diag::err_redefinition) << New->getDeclName(); | |||
4169 | Diag(OldLocation, PrevDiag); | |||
4170 | return New->setInvalidDecl(); | |||
4171 | } | |||
4172 | ||||
4173 | if (New->isInline() && !Old->getMostRecentDecl()->isInline()) { | |||
4174 | if (VarDecl *Def = Old->getDefinition()) { | |||
4175 | // C++1z [dcl.fcn.spec]p4: | |||
4176 | // If the definition of a variable appears in a translation unit before | |||
4177 | // its first declaration as inline, the program is ill-formed. | |||
4178 | Diag(New->getLocation(), diag::err_inline_decl_follows_def) << New; | |||
4179 | Diag(Def->getLocation(), diag::note_previous_definition); | |||
4180 | } | |||
4181 | } | |||
4182 | ||||
4183 | // If this redeclaration makes the variable inline, we may need to add it to | |||
4184 | // UndefinedButUsed. | |||
4185 | if (!Old->isInline() && New->isInline() && Old->isUsed(false) && | |||
4186 | !Old->getDefinition() && !New->isThisDeclarationADefinition()) | |||
4187 | UndefinedButUsed.insert(std::make_pair(Old->getCanonicalDecl(), | |||
4188 | SourceLocation())); | |||
4189 | ||||
4190 | if (New->getTLSKind() != Old->getTLSKind()) { | |||
4191 | if (!Old->getTLSKind()) { | |||
4192 | Diag(New->getLocation(), diag::err_thread_non_thread) << New->getDeclName(); | |||
4193 | Diag(OldLocation, PrevDiag); | |||
4194 | } else if (!New->getTLSKind()) { | |||
4195 | Diag(New->getLocation(), diag::err_non_thread_thread) << New->getDeclName(); | |||
4196 | Diag(OldLocation, PrevDiag); | |||
4197 | } else { | |||
4198 | // Do not allow redeclaration to change the variable between requiring | |||
4199 | // static and dynamic initialization. | |||
4200 | // FIXME: GCC allows this, but uses the TLS keyword on the first | |||
4201 | // declaration to determine the kind. Do we need to be compatible here? | |||
4202 | Diag(New->getLocation(), diag::err_thread_thread_different_kind) | |||
4203 | << New->getDeclName() << (New->getTLSKind() == VarDecl::TLS_Dynamic); | |||
4204 | Diag(OldLocation, PrevDiag); | |||
4205 | } | |||
4206 | } | |||
4207 | ||||
4208 | // C++ doesn't have tentative definitions, so go right ahead and check here. | |||
4209 | if (getLangOpts().CPlusPlus && | |||
4210 | New->isThisDeclarationADefinition() == VarDecl::Definition) { | |||
4211 | if (Old->isStaticDataMember() && Old->getCanonicalDecl()->isInline() && | |||
4212 | Old->getCanonicalDecl()->isConstexpr()) { | |||
4213 | // This definition won't be a definition any more once it's been merged. | |||
4214 | Diag(New->getLocation(), | |||
4215 | diag::warn_deprecated_redundant_constexpr_static_def); | |||
4216 | } else if (VarDecl *Def = Old->getDefinition()) { | |||
4217 | if (checkVarDeclRedefinition(Def, New)) | |||
4218 | return; | |||
4219 | } | |||
4220 | } | |||
4221 | ||||
4222 | if (haveIncompatibleLanguageLinkages(Old, New)) { | |||
4223 | Diag(New->getLocation(), diag::err_different_language_linkage) << New; | |||
4224 | Diag(OldLocation, PrevDiag); | |||
4225 | New->setInvalidDecl(); | |||
4226 | return; | |||
4227 | } | |||
4228 | ||||
4229 | // Merge "used" flag. | |||
4230 | if (Old->getMostRecentDecl()->isUsed(false)) | |||
4231 | New->setIsUsed(); | |||
4232 | ||||
4233 | // Keep a chain of previous declarations. | |||
4234 | New->setPreviousDecl(Old); | |||
4235 | if (NewTemplate) | |||
4236 | NewTemplate->setPreviousDecl(OldTemplate); | |||
4237 | adjustDeclContextForDeclaratorDecl(New, Old); | |||
4238 | ||||
4239 | // Inherit access appropriately. | |||
4240 | New->setAccess(Old->getAccess()); | |||
4241 | if (NewTemplate) | |||
4242 | NewTemplate->setAccess(New->getAccess()); | |||
4243 | ||||
4244 | if (Old->isInline()) | |||
4245 | New->setImplicitlyInline(); | |||
4246 | } | |||
4247 | ||||
4248 | void Sema::notePreviousDefinition(const NamedDecl *Old, SourceLocation New) { | |||
4249 | SourceManager &SrcMgr = getSourceManager(); | |||
4250 | auto FNewDecLoc = SrcMgr.getDecomposedLoc(New); | |||
4251 | auto FOldDecLoc = SrcMgr.getDecomposedLoc(Old->getLocation()); | |||
4252 | auto *FNew = SrcMgr.getFileEntryForID(FNewDecLoc.first); | |||
4253 | auto *FOld = SrcMgr.getFileEntryForID(FOldDecLoc.first); | |||
4254 | auto &HSI = PP.getHeaderSearchInfo(); | |||
4255 | StringRef HdrFilename = | |||
4256 | SrcMgr.getFilename(SrcMgr.getSpellingLoc(Old->getLocation())); | |||
4257 | ||||
4258 | auto noteFromModuleOrInclude = [&](Module *Mod, | |||
4259 | SourceLocation IncLoc) -> bool { | |||
4260 | // Redefinition errors with modules are common with non modular mapped | |||
4261 | // headers, example: a non-modular header H in module A that also gets | |||
4262 | // included directly in a TU. Pointing twice to the same header/definition | |||
4263 | // is confusing, try to get better diagnostics when modules is on. | |||
4264 | if (IncLoc.isValid()) { | |||
4265 | if (Mod) { | |||
4266 | Diag(IncLoc, diag::note_redefinition_modules_same_file) | |||
4267 | << HdrFilename.str() << Mod->getFullModuleName(); | |||
4268 | if (!Mod->DefinitionLoc.isInvalid()) | |||
4269 | Diag(Mod->DefinitionLoc, diag::note_defined_here) | |||
4270 | << Mod->getFullModuleName(); | |||
4271 | } else { | |||
4272 | Diag(IncLoc, diag::note_redefinition_include_same_file) | |||
4273 | << HdrFilename.str(); | |||
4274 | } | |||
4275 | return true; | |||
4276 | } | |||
4277 | ||||
4278 | return false; | |||
4279 | }; | |||
4280 | ||||
4281 | // Is it the same file and same offset? Provide more information on why | |||
4282 | // this leads to a redefinition error. | |||
4283 | if (FNew == FOld && FNewDecLoc.second == FOldDecLoc.second) { | |||
4284 | SourceLocation OldIncLoc = SrcMgr.getIncludeLoc(FOldDecLoc.first); | |||
4285 | SourceLocation NewIncLoc = SrcMgr.getIncludeLoc(FNewDecLoc.first); | |||
4286 | bool EmittedDiag = | |||
4287 | noteFromModuleOrInclude(Old->getOwningModule(), OldIncLoc); | |||
4288 | EmittedDiag |= noteFromModuleOrInclude(getCurrentModule(), NewIncLoc); | |||
4289 | ||||
4290 | // If the header has no guards, emit a note suggesting one. | |||
4291 | if (FOld && !HSI.isFileMultipleIncludeGuarded(FOld)) | |||
4292 | Diag(Old->getLocation(), diag::note_use_ifdef_guards); | |||
4293 | ||||
4294 | if (EmittedDiag) | |||
4295 | return; | |||
4296 | } | |||
4297 | ||||
4298 | // Redefinition coming from different files or couldn't do better above. | |||
4299 | if (Old->getLocation().isValid()) | |||
4300 | Diag(Old->getLocation(), diag::note_previous_definition); | |||
4301 | } | |||
4302 | ||||
4303 | /// We've just determined that \p Old and \p New both appear to be definitions | |||
4304 | /// of the same variable. Either diagnose or fix the problem. | |||
4305 | bool Sema::checkVarDeclRedefinition(VarDecl *Old, VarDecl *New) { | |||
4306 | if (!hasVisibleDefinition(Old) && | |||
4307 | (New->getFormalLinkage() == InternalLinkage || | |||
4308 | New->isInline() || | |||
4309 | New->getDescribedVarTemplate() || | |||
4310 | New->getNumTemplateParameterLists() || | |||
4311 | New->getDeclContext()->isDependentContext())) { | |||
4312 | // The previous definition is hidden, and multiple definitions are | |||
4313 | // permitted (in separate TUs). Demote this to a declaration. | |||
4314 | New->demoteThisDefinitionToDeclaration(); | |||
4315 | ||||
4316 | // Make the canonical definition visible. | |||
4317 | if (auto *OldTD = Old->getDescribedVarTemplate()) | |||
4318 | makeMergedDefinitionVisible(OldTD); | |||
4319 | makeMergedDefinitionVisible(Old); | |||
4320 | return false; | |||
4321 | } else { | |||
4322 | Diag(New->getLocation(), diag::err_redefinition) << New; | |||
4323 | notePreviousDefinition(Old, New->getLocation()); | |||
4324 | New->setInvalidDecl(); | |||
4325 | return true; | |||
4326 | } | |||
4327 | } | |||
4328 | ||||
4329 | /// ParsedFreeStandingDeclSpec - This method is invoked when a declspec with | |||
4330 | /// no declarator (e.g. "struct foo;") is parsed. | |||
4331 | Decl * | |||
4332 | Sema::ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, | |||
4333 | RecordDecl *&AnonRecord) { | |||
4334 | return ParsedFreeStandingDeclSpec(S, AS, DS, MultiTemplateParamsArg(), false, | |||
4335 | AnonRecord); | |||
4336 | } | |||
4337 | ||||
4338 | // The MS ABI changed between VS2013 and VS2015 with regard to numbers used to | |||
4339 | // disambiguate entities defined in different scopes. | |||
4340 | // While the VS2015 ABI fixes potential miscompiles, it is also breaks | |||
4341 | // compatibility. | |||
4342 | // We will pick our mangling number depending on which version of MSVC is being | |||
4343 | // targeted. | |||
4344 | static unsigned getMSManglingNumber(const LangOptions &LO, Scope *S) { | |||
4345 | return LO.isCompatibleWithMSVC(LangOptions::MSVC2015) | |||
4346 | ? S->getMSCurManglingNumber() | |||
4347 | : S->getMSLastManglingNumber(); | |||
4348 | } | |||
4349 | ||||
4350 | void Sema::handleTagNumbering(const TagDecl *Tag, Scope *TagScope) { | |||
4351 | if (!Context.getLangOpts().CPlusPlus) | |||
4352 | return; | |||
4353 | ||||
4354 | if (isa<CXXRecordDecl>(Tag->getParent())) { | |||
4355 | // If this tag is the direct child of a class, number it if | |||
4356 | // it is anonymous. | |||
4357 | if (!Tag->getName().empty() || Tag->getTypedefNameForAnonDecl()) | |||
4358 | return; | |||
4359 | MangleNumberingContext &MCtx = | |||
4360 | Context.getManglingNumberContext(Tag->getParent()); | |||
4361 | Context.setManglingNumber( | |||
4362 | Tag, MCtx.getManglingNumber( | |||
4363 | Tag, getMSManglingNumber(getLangOpts(), TagScope))); | |||
4364 | return; | |||
4365 | } | |||
4366 | ||||
4367 | // If this tag isn't a direct child of a class, number it if it is local. | |||
4368 | MangleNumberingContext *MCtx; | |||
4369 | Decl *ManglingContextDecl; | |||
4370 | std::tie(MCtx, ManglingContextDecl) = | |||
4371 | getCurrentMangleNumberContext(Tag->getDeclContext()); | |||
4372 | if (MCtx) { | |||
4373 | Context.setManglingNumber( | |||
4374 | Tag, MCtx->getManglingNumber( | |||
4375 | Tag, getMSManglingNumber(getLangOpts(), TagScope))); | |||
4376 | } | |||
4377 | } | |||
4378 | ||||
4379 | namespace { | |||
4380 | struct NonCLikeKind { | |||
4381 | enum { | |||
4382 | None, | |||
4383 | BaseClass, | |||
4384 | DefaultMemberInit, | |||
4385 | Lambda, | |||
4386 | Friend, | |||
4387 | OtherMember, | |||
4388 | Invalid, | |||
4389 | } Kind = None; | |||
4390 | SourceRange Range; | |||
4391 | ||||
4392 | explicit operator bool() { return Kind != None; } | |||
4393 | }; | |||
4394 | } | |||
4395 | ||||
4396 | /// Determine whether a class is C-like, according to the rules of C++ | |||
4397 | /// [dcl.typedef] for anonymous classes with typedef names for linkage. | |||
4398 | static NonCLikeKind getNonCLikeKindForAnonymousStruct(const CXXRecordDecl *RD) { | |||
4399 | if (RD->isInvalidDecl()) | |||
4400 | return {NonCLikeKind::Invalid, {}}; | |||
4401 | ||||
4402 | // C++ [dcl.typedef]p9: [P1766R1] | |||
4403 | // An unnamed class with a typedef name for linkage purposes shall not | |||
4404 | // | |||
4405 | // -- have any base classes | |||
4406 | if (RD->getNumBases()) | |||
4407 | return {NonCLikeKind::BaseClass, | |||
4408 | SourceRange(RD->bases_begin()->getBeginLoc(), | |||
4409 | RD->bases_end()[-1].getEndLoc())}; | |||
4410 | bool Invalid = false; | |||
4411 | for (Decl *D : RD->decls()) { | |||
4412 | // Don't complain about things we already diagnosed. | |||
4413 | if (D->isInvalidDecl()) { | |||
4414 | Invalid = true; | |||
4415 | continue; | |||
4416 | } | |||
4417 | ||||
4418 | // -- have any [...] default member initializers | |||
4419 | if (auto *FD = dyn_cast<FieldDecl>(D)) { | |||
4420 | if (FD->hasInClassInitializer()) { | |||
4421 | auto *Init = FD->getInClassInitializer(); | |||
4422 | return {NonCLikeKind::DefaultMemberInit, | |||
4423 | Init ? Init->getSourceRange() : D->getSourceRange()}; | |||
4424 | } | |||
4425 | continue; | |||
4426 | } | |||
4427 | ||||
4428 | // FIXME: We don't allow friend declarations. This violates the wording of | |||
4429 | // P1766, but not the intent. | |||
4430 | if (isa<FriendDecl>(D)) | |||
4431 | return {NonCLikeKind::Friend, D->getSourceRange()}; | |||
4432 | ||||
4433 | // -- declare any members other than non-static data members, member | |||
4434 | // enumerations, or member classes, | |||
4435 | if (isa<StaticAssertDecl>(D) || isa<IndirectFieldDecl>(D) || | |||
4436 | isa<EnumDecl>(D)) | |||
4437 | continue; | |||
4438 | auto *MemberRD = dyn_cast<CXXRecordDecl>(D); | |||
4439 | if (!MemberRD) { | |||
4440 | if (D->isImplicit()) | |||
4441 | continue; | |||
4442 | return {NonCLikeKind::OtherMember, D->getSourceRange()}; | |||
4443 | } | |||
4444 | ||||
4445 | // -- contain a lambda-expression, | |||
4446 | if (MemberRD->isLambda()) | |||
4447 | return {NonCLikeKind::Lambda, MemberRD->getSourceRange()}; | |||
4448 | ||||
4449 | // and all member classes shall also satisfy these requirements | |||
4450 | // (recursively). | |||
4451 | if (MemberRD->isThisDeclarationADefinition()) { | |||
4452 | if (auto Kind = getNonCLikeKindForAnonymousStruct(MemberRD)) | |||
4453 | return Kind; | |||
4454 | } | |||
4455 | } | |||
4456 | ||||
4457 | return {Invalid ? NonCLikeKind::Invalid : NonCLikeKind::None, {}}; | |||
4458 | } | |||
4459 | ||||
4460 | void Sema::setTagNameForLinkagePurposes(TagDecl *TagFromDeclSpec, | |||
4461 | TypedefNameDecl *NewTD) { | |||
4462 | if (TagFromDeclSpec->isInvalidDecl()) | |||
4463 | return; | |||
4464 | ||||
4465 | // Do nothing if the tag already has a name for linkage purposes. | |||
4466 | if (TagFromDeclSpec->hasNameForLinkage()) | |||
4467 | return; | |||
4468 | ||||
4469 | // A well-formed anonymous tag must always be a TUK_Definition. | |||
4470 | assert(TagFromDeclSpec->isThisDeclarationADefinition())((TagFromDeclSpec->isThisDeclarationADefinition()) ? static_cast <void> (0) : __assert_fail ("TagFromDeclSpec->isThisDeclarationADefinition()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4470, __PRETTY_FUNCTION__)); | |||
4471 | ||||
4472 | // The type must match the tag exactly; no qualifiers allowed. | |||
4473 | if (!Context.hasSameType(NewTD->getUnderlyingType(), | |||
4474 | Context.getTagDeclType(TagFromDeclSpec))) { | |||
4475 | if (getLangOpts().CPlusPlus) | |||
4476 | Context.addTypedefNameForUnnamedTagDecl(TagFromDeclSpec, NewTD); | |||
4477 | return; | |||
4478 | } | |||
4479 | ||||
4480 | // C++ [dcl.typedef]p9: [P1766R1, applied as DR] | |||
4481 | // An unnamed class with a typedef name for linkage purposes shall [be | |||
4482 | // C-like]. | |||
4483 | // | |||
4484 | // FIXME: Also diagnose if we've already computed the linkage. That ideally | |||
4485 | // shouldn't happen, but there are constructs that the language rule doesn't | |||
4486 | // disallow for which we can't reasonably avoid computing linkage early. | |||
4487 | const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(TagFromDeclSpec); | |||
4488 | NonCLikeKind NonCLike = RD ? getNonCLikeKindForAnonymousStruct(RD) | |||
4489 | : NonCLikeKind(); | |||
4490 | bool ChangesLinkage = TagFromDeclSpec->hasLinkageBeenComputed(); | |||
4491 | if (NonCLike || ChangesLinkage) { | |||
4492 | if (NonCLike.Kind == NonCLikeKind::Invalid) | |||
4493 | return; | |||
4494 | ||||
4495 | unsigned DiagID = diag::ext_non_c_like_anon_struct_in_typedef; | |||
4496 | if (ChangesLinkage) { | |||
4497 | // If the linkage changes, we can't accept this as an extension. | |||
4498 | if (NonCLike.Kind == NonCLikeKind::None) | |||
4499 | DiagID = diag::err_typedef_changes_linkage; | |||
4500 | else | |||
4501 | DiagID = diag::err_non_c_like_anon_struct_in_typedef; | |||
4502 | } | |||
4503 | ||||
4504 | SourceLocation FixitLoc = | |||
4505 | getLocForEndOfToken(TagFromDeclSpec->getInnerLocStart()); | |||
4506 | llvm::SmallString<40> TextToInsert; | |||
4507 | TextToInsert += ' '; | |||
4508 | TextToInsert += NewTD->getIdentifier()->getName(); | |||
4509 | ||||
4510 | Diag(FixitLoc, DiagID) | |||
4511 | << isa<TypeAliasDecl>(NewTD) | |||
4512 | << FixItHint::CreateInsertion(FixitLoc, TextToInsert); | |||
4513 | if (NonCLike.Kind != NonCLikeKind::None) { | |||
4514 | Diag(NonCLike.Range.getBegin(), diag::note_non_c_like_anon_struct) | |||
4515 | << NonCLike.Kind - 1 << NonCLike.Range; | |||
4516 | } | |||
4517 | Diag(NewTD->getLocation(), diag::note_typedef_for_linkage_here) | |||
4518 | << NewTD << isa<TypeAliasDecl>(NewTD); | |||
4519 | ||||
4520 | if (ChangesLinkage) | |||
4521 | return; | |||
4522 | } | |||
4523 | ||||
4524 | // Otherwise, set this as the anon-decl typedef for the tag. | |||
4525 | TagFromDeclSpec->setTypedefNameForAnonDecl(NewTD); | |||
4526 | } | |||
4527 | ||||
4528 | static unsigned GetDiagnosticTypeSpecifierID(DeclSpec::TST T) { | |||
4529 | switch (T) { | |||
4530 | case DeclSpec::TST_class: | |||
4531 | return 0; | |||
4532 | case DeclSpec::TST_struct: | |||
4533 | return 1; | |||
4534 | case DeclSpec::TST_interface: | |||
4535 | return 2; | |||
4536 | case DeclSpec::TST_union: | |||
4537 | return 3; | |||
4538 | case DeclSpec::TST_enum: | |||
4539 | return 4; | |||
4540 | default: | |||
4541 | llvm_unreachable("unexpected type specifier")::llvm::llvm_unreachable_internal("unexpected type specifier" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4541); | |||
4542 | } | |||
4543 | } | |||
4544 | ||||
4545 | /// ParsedFreeStandingDeclSpec - This method is invoked when a declspec with | |||
4546 | /// no declarator (e.g. "struct foo;") is parsed. It also accepts template | |||
4547 | /// parameters to cope with template friend declarations. | |||
4548 | Decl * | |||
4549 | Sema::ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, | |||
4550 | MultiTemplateParamsArg TemplateParams, | |||
4551 | bool IsExplicitInstantiation, | |||
4552 | RecordDecl *&AnonRecord) { | |||
4553 | Decl *TagD = nullptr; | |||
4554 | TagDecl *Tag = nullptr; | |||
4555 | if (DS.getTypeSpecType() == DeclSpec::TST_class || | |||
4556 | DS.getTypeSpecType() == DeclSpec::TST_struct || | |||
4557 | DS.getTypeSpecType() == DeclSpec::TST_interface || | |||
4558 | DS.getTypeSpecType() == DeclSpec::TST_union || | |||
4559 | DS.getTypeSpecType() == DeclSpec::TST_enum) { | |||
4560 | TagD = DS.getRepAsDecl(); | |||
4561 | ||||
4562 | if (!TagD) // We probably had an error | |||
4563 | return nullptr; | |||
4564 | ||||
4565 | // Note that the above type specs guarantee that the | |||
4566 | // type rep is a Decl, whereas in many of the others | |||
4567 | // it's a Type. | |||
4568 | if (isa<TagDecl>(TagD)) | |||
4569 | Tag = cast<TagDecl>(TagD); | |||
4570 | else if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(TagD)) | |||
4571 | Tag = CTD->getTemplatedDecl(); | |||
4572 | } | |||
4573 | ||||
4574 | if (Tag) { | |||
4575 | handleTagNumbering(Tag, S); | |||
4576 | Tag->setFreeStanding(); | |||
4577 | if (Tag->isInvalidDecl()) | |||
4578 | return Tag; | |||
4579 | } | |||
4580 | ||||
4581 | if (unsigned TypeQuals = DS.getTypeQualifiers()) { | |||
4582 | // Enforce C99 6.7.3p2: "Types other than pointer types derived from object | |||
4583 | // or incomplete types shall not be restrict-qualified." | |||
4584 | if (TypeQuals & DeclSpec::TQ_restrict) | |||
4585 | Diag(DS.getRestrictSpecLoc(), | |||
4586 | diag::err_typecheck_invalid_restrict_not_pointer_noarg) | |||
4587 | << DS.getSourceRange(); | |||
4588 | } | |||
4589 | ||||
4590 | if (DS.isInlineSpecified()) | |||
4591 | Diag(DS.getInlineSpecLoc(), diag::err_inline_non_function) | |||
4592 | << getLangOpts().CPlusPlus17; | |||
4593 | ||||
4594 | if (DS.hasConstexprSpecifier()) { | |||
4595 | // C++0x [dcl.constexpr]p1: constexpr can only be applied to declarations | |||
4596 | // and definitions of functions and variables. | |||
4597 | // C++2a [dcl.constexpr]p1: The consteval specifier shall be applied only to | |||
4598 | // the declaration of a function or function template | |||
4599 | if (Tag) | |||
4600 | Diag(DS.getConstexprSpecLoc(), diag::err_constexpr_tag) | |||
4601 | << GetDiagnosticTypeSpecifierID(DS.getTypeSpecType()) | |||
4602 | << static_cast<int>(DS.getConstexprSpecifier()); | |||
4603 | else | |||
4604 | Diag(DS.getConstexprSpecLoc(), diag::err_constexpr_wrong_decl_kind) | |||
4605 | << static_cast<int>(DS.getConstexprSpecifier()); | |||
4606 | // Don't emit warnings after this error. | |||
4607 | return TagD; | |||
4608 | } | |||
4609 | ||||
4610 | DiagnoseFunctionSpecifiers(DS); | |||
4611 | ||||
4612 | if (DS.isFriendSpecified()) { | |||
4613 | // If we're dealing with a decl but not a TagDecl, assume that | |||
4614 | // whatever routines created it handled the friendship aspect. | |||
4615 | if (TagD && !Tag) | |||
4616 | return nullptr; | |||
4617 | return ActOnFriendTypeDecl(S, DS, TemplateParams); | |||
4618 | } | |||
4619 | ||||
4620 | const CXXScopeSpec &SS = DS.getTypeSpecScope(); | |||
4621 | bool IsExplicitSpecialization = | |||
4622 | !TemplateParams.empty() && TemplateParams.back()->size() == 0; | |||
4623 | if (Tag && SS.isNotEmpty() && !Tag->isCompleteDefinition() && | |||
4624 | !IsExplicitInstantiation && !IsExplicitSpecialization && | |||
4625 | !isa<ClassTemplatePartialSpecializationDecl>(Tag)) { | |||
4626 | // Per C++ [dcl.type.elab]p1, a class declaration cannot have a | |||
4627 | // nested-name-specifier unless it is an explicit instantiation | |||
4628 | // or an explicit specialization. | |||
4629 | // | |||
4630 | // FIXME: We allow class template partial specializations here too, per the | |||
4631 | // obvious intent of DR1819. | |||
4632 | // | |||
4633 | // Per C++ [dcl.enum]p1, an opaque-enum-declaration can't either. | |||
4634 | Diag(SS.getBeginLoc(), diag::err_standalone_class_nested_name_specifier) | |||
4635 | << GetDiagnosticTypeSpecifierID(DS.getTypeSpecType()) << SS.getRange(); | |||
4636 | return nullptr; | |||
4637 | } | |||
4638 | ||||
4639 | // Track whether this decl-specifier declares anything. | |||
4640 | bool DeclaresAnything = true; | |||
4641 | ||||
4642 | // Handle anonymous struct definitions. | |||
4643 | if (RecordDecl *Record = dyn_cast_or_null<RecordDecl>(Tag)) { | |||
4644 | if (!Record->getDeclName() && Record->isCompleteDefinition() && | |||
4645 | DS.getStorageClassSpec() != DeclSpec::SCS_typedef) { | |||
4646 | if (getLangOpts().CPlusPlus || | |||
4647 | Record->getDeclContext()->isRecord()) { | |||
4648 | // If CurContext is a DeclContext that can contain statements, | |||
4649 | // RecursiveASTVisitor won't visit the decls that | |||
4650 | // BuildAnonymousStructOrUnion() will put into CurContext. | |||
4651 | // Also store them here so that they can be part of the | |||
4652 | // DeclStmt that gets created in this case. | |||
4653 | // FIXME: Also return the IndirectFieldDecls created by | |||
4654 | // BuildAnonymousStructOr union, for the same reason? | |||
4655 | if (CurContext->isFunctionOrMethod()) | |||
4656 | AnonRecord = Record; | |||
4657 | return BuildAnonymousStructOrUnion(S, DS, AS, Record, | |||
4658 | Context.getPrintingPolicy()); | |||
4659 | } | |||
4660 | ||||
4661 | DeclaresAnything = false; | |||
4662 | } | |||
4663 | } | |||
4664 | ||||
4665 | // C11 6.7.2.1p2: | |||
4666 | // A struct-declaration that does not declare an anonymous structure or | |||
4667 | // anonymous union shall contain a struct-declarator-list. | |||
4668 | // | |||
4669 | // This rule also existed in C89 and C99; the grammar for struct-declaration | |||
4670 | // did not permit a struct-declaration without a struct-declarator-list. | |||
4671 | if (!getLangOpts().CPlusPlus && CurContext->isRecord() && | |||
4672 | DS.getStorageClassSpec() == DeclSpec::SCS_unspecified) { | |||
4673 | // Check for Microsoft C extension: anonymous struct/union member. | |||
4674 | // Handle 2 kinds of anonymous struct/union: | |||
4675 | // struct STRUCT; | |||
4676 | // union UNION; | |||
4677 | // and | |||
4678 | // STRUCT_TYPE; <- where STRUCT_TYPE is a typedef struct. | |||
4679 | // UNION_TYPE; <- where UNION_TYPE is a typedef union. | |||
4680 | if ((Tag && Tag->getDeclName()) || | |||
4681 | DS.getTypeSpecType() == DeclSpec::TST_typename) { | |||
4682 | RecordDecl *Record = nullptr; | |||
4683 | if (Tag) | |||
4684 | Record = dyn_cast<RecordDecl>(Tag); | |||
4685 | else if (const RecordType *RT = | |||
4686 | DS.getRepAsType().get()->getAsStructureType()) | |||
4687 | Record = RT->getDecl(); | |||
4688 | else if (const RecordType *UT = DS.getRepAsType().get()->getAsUnionType()) | |||
4689 | Record = UT->getDecl(); | |||
4690 | ||||
4691 | if (Record && getLangOpts().MicrosoftExt) { | |||
4692 | Diag(DS.getBeginLoc(), diag::ext_ms_anonymous_record) | |||
4693 | << Record->isUnion() << DS.getSourceRange(); | |||
4694 | return BuildMicrosoftCAnonymousStruct(S, DS, Record); | |||
4695 | } | |||
4696 | ||||
4697 | DeclaresAnything = false; | |||
4698 | } | |||
4699 | } | |||
4700 | ||||
4701 | // Skip all the checks below if we have a type error. | |||
4702 | if (DS.getTypeSpecType() == DeclSpec::TST_error || | |||
4703 | (TagD && TagD->isInvalidDecl())) | |||
4704 | return TagD; | |||
4705 | ||||
4706 | if (getLangOpts().CPlusPlus && | |||
4707 | DS.getStorageClassSpec() != DeclSpec::SCS_typedef) | |||
4708 | if (EnumDecl *Enum = dyn_cast_or_null<EnumDecl>(Tag)) | |||
4709 | if (Enum->enumerator_begin() == Enum->enumerator_end() && | |||
4710 | !Enum->getIdentifier() && !Enum->isInvalidDecl()) | |||
4711 | DeclaresAnything = false; | |||
4712 | ||||
4713 | if (!DS.isMissingDeclaratorOk()) { | |||
4714 | // Customize diagnostic for a typedef missing a name. | |||
4715 | if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) | |||
4716 | Diag(DS.getBeginLoc(), diag::ext_typedef_without_a_name) | |||
4717 | << DS.getSourceRange(); | |||
4718 | else | |||
4719 | DeclaresAnything = false; | |||
4720 | } | |||
4721 | ||||
4722 | if (DS.isModulePrivateSpecified() && | |||
4723 | Tag && Tag->getDeclContext()->isFunctionOrMethod()) | |||
4724 | Diag(DS.getModulePrivateSpecLoc(), diag::err_module_private_local_class) | |||
4725 | << Tag->getTagKind() | |||
4726 | << FixItHint::CreateRemoval(DS.getModulePrivateSpecLoc()); | |||
4727 | ||||
4728 | ActOnDocumentableDecl(TagD); | |||
4729 | ||||
4730 | // C 6.7/2: | |||
4731 | // A declaration [...] shall declare at least a declarator [...], a tag, | |||
4732 | // or the members of an enumeration. | |||
4733 | // C++ [dcl.dcl]p3: | |||
4734 | // [If there are no declarators], and except for the declaration of an | |||
4735 | // unnamed bit-field, the decl-specifier-seq shall introduce one or more | |||
4736 | // names into the program, or shall redeclare a name introduced by a | |||
4737 | // previous declaration. | |||
4738 | if (!DeclaresAnything) { | |||
4739 | // In C, we allow this as a (popular) extension / bug. Don't bother | |||
4740 | // producing further diagnostics for redundant qualifiers after this. | |||
4741 | Diag(DS.getBeginLoc(), (IsExplicitInstantiation || !TemplateParams.empty()) | |||
4742 | ? diag::err_no_declarators | |||
4743 | : diag::ext_no_declarators) | |||
4744 | << DS.getSourceRange(); | |||
4745 | return TagD; | |||
4746 | } | |||
4747 | ||||
4748 | // C++ [dcl.stc]p1: | |||
4749 | // If a storage-class-specifier appears in a decl-specifier-seq, [...] the | |||
4750 | // init-declarator-list of the declaration shall not be empty. | |||
4751 | // C++ [dcl.fct.spec]p1: | |||
4752 | // If a cv-qualifier appears in a decl-specifier-seq, the | |||
4753 | // init-declarator-list of the declaration shall not be empty. | |||
4754 | // | |||
4755 | // Spurious qualifiers here appear to be valid in C. | |||
4756 | unsigned DiagID = diag::warn_standalone_specifier; | |||
4757 | if (getLangOpts().CPlusPlus) | |||
4758 | DiagID = diag::ext_standalone_specifier; | |||
4759 | ||||
4760 | // Note that a linkage-specification sets a storage class, but | |||
4761 | // 'extern "C" struct foo;' is actually valid and not theoretically | |||
4762 | // useless. | |||
4763 | if (DeclSpec::SCS SCS = DS.getStorageClassSpec()) { | |||
4764 | if (SCS == DeclSpec::SCS_mutable) | |||
4765 | // Since mutable is not a viable storage class specifier in C, there is | |||
4766 | // no reason to treat it as an extension. Instead, diagnose as an error. | |||
4767 | Diag(DS.getStorageClassSpecLoc(), diag::err_mutable_nonmember); | |||
4768 | else if (!DS.isExternInLinkageSpec() && SCS != DeclSpec::SCS_typedef) | |||
4769 | Diag(DS.getStorageClassSpecLoc(), DiagID) | |||
4770 | << DeclSpec::getSpecifierName(SCS); | |||
4771 | } | |||
4772 | ||||
4773 | if (DeclSpec::TSCS TSCS = DS.getThreadStorageClassSpec()) | |||
4774 | Diag(DS.getThreadStorageClassSpecLoc(), DiagID) | |||
4775 | << DeclSpec::getSpecifierName(TSCS); | |||
4776 | if (DS.getTypeQualifiers()) { | |||
4777 | if (DS.getTypeQualifiers() & DeclSpec::TQ_const) | |||
4778 | Diag(DS.getConstSpecLoc(), DiagID) << "const"; | |||
4779 | if (DS.getTypeQualifiers() & DeclSpec::TQ_volatile) | |||
4780 | Diag(DS.getConstSpecLoc(), DiagID) << "volatile"; | |||
4781 | // Restrict is covered above. | |||
4782 | if (DS.getTypeQualifiers() & DeclSpec::TQ_atomic) | |||
4783 | Diag(DS.getAtomicSpecLoc(), DiagID) << "_Atomic"; | |||
4784 | if (DS.getTypeQualifiers() & DeclSpec::TQ_unaligned) | |||
4785 | Diag(DS.getUnalignedSpecLoc(), DiagID) << "__unaligned"; | |||
4786 | } | |||
4787 | ||||
4788 | // Warn about ignored type attributes, for example: | |||
4789 | // __attribute__((aligned)) struct A; | |||
4790 | // Attributes should be placed after tag to apply to type declaration. | |||
4791 | if (!DS.getAttributes().empty()) { | |||
4792 | DeclSpec::TST TypeSpecType = DS.getTypeSpecType(); | |||
4793 | if (TypeSpecType == DeclSpec::TST_class || | |||
4794 | TypeSpecType == DeclSpec::TST_struct || | |||
4795 | TypeSpecType == DeclSpec::TST_interface || | |||
4796 | TypeSpecType == DeclSpec::TST_union || | |||
4797 | TypeSpecType == DeclSpec::TST_enum) { | |||
4798 | for (const ParsedAttr &AL : DS.getAttributes()) | |||
4799 | Diag(AL.getLoc(), diag::warn_declspec_attribute_ignored) | |||
4800 | << AL << GetDiagnosticTypeSpecifierID(TypeSpecType); | |||
4801 | } | |||
4802 | } | |||
4803 | ||||
4804 | return TagD; | |||
4805 | } | |||
4806 | ||||
4807 | /// We are trying to inject an anonymous member into the given scope; | |||
4808 | /// check if there's an existing declaration that can't be overloaded. | |||
4809 | /// | |||
4810 | /// \return true if this is a forbidden redeclaration | |||
4811 | static bool CheckAnonMemberRedeclaration(Sema &SemaRef, | |||
4812 | Scope *S, | |||
4813 | DeclContext *Owner, | |||
4814 | DeclarationName Name, | |||
4815 | SourceLocation NameLoc, | |||
4816 | bool IsUnion) { | |||
4817 | LookupResult R(SemaRef, Name, NameLoc, Sema::LookupMemberName, | |||
4818 | Sema::ForVisibleRedeclaration); | |||
4819 | if (!SemaRef.LookupName(R, S)) return false; | |||
4820 | ||||
4821 | // Pick a representative declaration. | |||
4822 | NamedDecl *PrevDecl = R.getRepresentativeDecl()->getUnderlyingDecl(); | |||
4823 | assert(PrevDecl && "Expected a non-null Decl")((PrevDecl && "Expected a non-null Decl") ? static_cast <void> (0) : __assert_fail ("PrevDecl && \"Expected a non-null Decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4823, __PRETTY_FUNCTION__)); | |||
4824 | ||||
4825 | if (!SemaRef.isDeclInScope(PrevDecl, Owner, S)) | |||
4826 | return false; | |||
4827 | ||||
4828 | SemaRef.Diag(NameLoc, diag::err_anonymous_record_member_redecl) | |||
4829 | << IsUnion << Name; | |||
4830 | SemaRef.Diag(PrevDecl->getLocation(), diag::note_previous_declaration); | |||
4831 | ||||
4832 | return true; | |||
4833 | } | |||
4834 | ||||
4835 | /// InjectAnonymousStructOrUnionMembers - Inject the members of the | |||
4836 | /// anonymous struct or union AnonRecord into the owning context Owner | |||
4837 | /// and scope S. This routine will be invoked just after we realize | |||
4838 | /// that an unnamed union or struct is actually an anonymous union or | |||
4839 | /// struct, e.g., | |||
4840 | /// | |||
4841 | /// @code | |||
4842 | /// union { | |||
4843 | /// int i; | |||
4844 | /// float f; | |||
4845 | /// }; // InjectAnonymousStructOrUnionMembers called here to inject i and | |||
4846 | /// // f into the surrounding scope.x | |||
4847 | /// @endcode | |||
4848 | /// | |||
4849 | /// This routine is recursive, injecting the names of nested anonymous | |||
4850 | /// structs/unions into the owning context and scope as well. | |||
4851 | static bool | |||
4852 | InjectAnonymousStructOrUnionMembers(Sema &SemaRef, Scope *S, DeclContext *Owner, | |||
4853 | RecordDecl *AnonRecord, AccessSpecifier AS, | |||
4854 | SmallVectorImpl<NamedDecl *> &Chaining) { | |||
4855 | bool Invalid = false; | |||
4856 | ||||
4857 | // Look every FieldDecl and IndirectFieldDecl with a name. | |||
4858 | for (auto *D : AnonRecord->decls()) { | |||
4859 | if ((isa<FieldDecl>(D) || isa<IndirectFieldDecl>(D)) && | |||
4860 | cast<NamedDecl>(D)->getDeclName()) { | |||
4861 | ValueDecl *VD = cast<ValueDecl>(D); | |||
4862 | if (CheckAnonMemberRedeclaration(SemaRef, S, Owner, VD->getDeclName(), | |||
4863 | VD->getLocation(), | |||
4864 | AnonRecord->isUnion())) { | |||
4865 | // C++ [class.union]p2: | |||
4866 | // The names of the members of an anonymous union shall be | |||
4867 | // distinct from the names of any other entity in the | |||
4868 | // scope in which the anonymous union is declared. | |||
4869 | Invalid = true; | |||
4870 | } else { | |||
4871 | // C++ [class.union]p2: | |||
4872 | // For the purpose of name lookup, after the anonymous union | |||
4873 | // definition, the members of the anonymous union are | |||
4874 | // considered to have been defined in the scope in which the | |||
4875 | // anonymous union is declared. | |||
4876 | unsigned OldChainingSize = Chaining.size(); | |||
4877 | if (IndirectFieldDecl *IF = dyn_cast<IndirectFieldDecl>(VD)) | |||
4878 | Chaining.append(IF->chain_begin(), IF->chain_end()); | |||
4879 | else | |||
4880 | Chaining.push_back(VD); | |||
4881 | ||||
4882 | assert(Chaining.size() >= 2)((Chaining.size() >= 2) ? static_cast<void> (0) : __assert_fail ("Chaining.size() >= 2", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4882, __PRETTY_FUNCTION__)); | |||
4883 | NamedDecl **NamedChain = | |||
4884 | new (SemaRef.Context)NamedDecl*[Chaining.size()]; | |||
4885 | for (unsigned i = 0; i < Chaining.size(); i++) | |||
4886 | NamedChain[i] = Chaining[i]; | |||
4887 | ||||
4888 | IndirectFieldDecl *IndirectField = IndirectFieldDecl::Create( | |||
4889 | SemaRef.Context, Owner, VD->getLocation(), VD->getIdentifier(), | |||
4890 | VD->getType(), {NamedChain, Chaining.size()}); | |||
4891 | ||||
4892 | for (const auto *Attr : VD->attrs()) | |||
4893 | IndirectField->addAttr(Attr->clone(SemaRef.Context)); | |||
4894 | ||||
4895 | IndirectField->setAccess(AS); | |||
4896 | IndirectField->setImplicit(); | |||
4897 | SemaRef.PushOnScopeChains(IndirectField, S); | |||
4898 | ||||
4899 | // That includes picking up the appropriate access specifier. | |||
4900 | if (AS != AS_none) IndirectField->setAccess(AS); | |||
4901 | ||||
4902 | Chaining.resize(OldChainingSize); | |||
4903 | } | |||
4904 | } | |||
4905 | } | |||
4906 | ||||
4907 | return Invalid; | |||
4908 | } | |||
4909 | ||||
4910 | /// StorageClassSpecToVarDeclStorageClass - Maps a DeclSpec::SCS to | |||
4911 | /// a VarDecl::StorageClass. Any error reporting is up to the caller: | |||
4912 | /// illegal input values are mapped to SC_None. | |||
4913 | static StorageClass | |||
4914 | StorageClassSpecToVarDeclStorageClass(const DeclSpec &DS) { | |||
4915 | DeclSpec::SCS StorageClassSpec = DS.getStorageClassSpec(); | |||
4916 | assert(StorageClassSpec != DeclSpec::SCS_typedef &&((StorageClassSpec != DeclSpec::SCS_typedef && "Parser allowed 'typedef' as storage class VarDecl." ) ? static_cast<void> (0) : __assert_fail ("StorageClassSpec != DeclSpec::SCS_typedef && \"Parser allowed 'typedef' as storage class VarDecl.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4917, __PRETTY_FUNCTION__)) | |||
4917 | "Parser allowed 'typedef' as storage class VarDecl.")((StorageClassSpec != DeclSpec::SCS_typedef && "Parser allowed 'typedef' as storage class VarDecl." ) ? static_cast<void> (0) : __assert_fail ("StorageClassSpec != DeclSpec::SCS_typedef && \"Parser allowed 'typedef' as storage class VarDecl.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4917, __PRETTY_FUNCTION__)); | |||
4918 | switch (StorageClassSpec) { | |||
4919 | case DeclSpec::SCS_unspecified: return SC_None; | |||
4920 | case DeclSpec::SCS_extern: | |||
4921 | if (DS.isExternInLinkageSpec()) | |||
4922 | return SC_None; | |||
4923 | return SC_Extern; | |||
4924 | case DeclSpec::SCS_static: return SC_Static; | |||
4925 | case DeclSpec::SCS_auto: return SC_Auto; | |||
4926 | case DeclSpec::SCS_register: return SC_Register; | |||
4927 | case DeclSpec::SCS_private_extern: return SC_PrivateExtern; | |||
4928 | // Illegal SCSs map to None: error reporting is up to the caller. | |||
4929 | case DeclSpec::SCS_mutable: // Fall through. | |||
4930 | case DeclSpec::SCS_typedef: return SC_None; | |||
4931 | } | |||
4932 | llvm_unreachable("unknown storage class specifier")::llvm::llvm_unreachable_internal("unknown storage class specifier" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4932); | |||
4933 | } | |||
4934 | ||||
4935 | static SourceLocation findDefaultInitializer(const CXXRecordDecl *Record) { | |||
4936 | assert(Record->hasInClassInitializer())((Record->hasInClassInitializer()) ? static_cast<void> (0) : __assert_fail ("Record->hasInClassInitializer()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4936, __PRETTY_FUNCTION__)); | |||
4937 | ||||
4938 | for (const auto *I : Record->decls()) { | |||
4939 | const auto *FD = dyn_cast<FieldDecl>(I); | |||
4940 | if (const auto *IFD = dyn_cast<IndirectFieldDecl>(I)) | |||
4941 | FD = IFD->getAnonField(); | |||
4942 | if (FD && FD->hasInClassInitializer()) | |||
4943 | return FD->getLocation(); | |||
4944 | } | |||
4945 | ||||
4946 | llvm_unreachable("couldn't find in-class initializer")::llvm::llvm_unreachable_internal("couldn't find in-class initializer" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 4946); | |||
4947 | } | |||
4948 | ||||
4949 | static void checkDuplicateDefaultInit(Sema &S, CXXRecordDecl *Parent, | |||
4950 | SourceLocation DefaultInitLoc) { | |||
4951 | if (!Parent->isUnion() || !Parent->hasInClassInitializer()) | |||
4952 | return; | |||
4953 | ||||
4954 | S.Diag(DefaultInitLoc, diag::err_multiple_mem_union_initialization); | |||
4955 | S.Diag(findDefaultInitializer(Parent), diag::note_previous_initializer) << 0; | |||
4956 | } | |||
4957 | ||||
4958 | static void checkDuplicateDefaultInit(Sema &S, CXXRecordDecl *Parent, | |||
4959 | CXXRecordDecl *AnonUnion) { | |||
4960 | if (!Parent->isUnion() || !Parent->hasInClassInitializer()) | |||
4961 | return; | |||
4962 | ||||
4963 | checkDuplicateDefaultInit(S, Parent, findDefaultInitializer(AnonUnion)); | |||
4964 | } | |||
4965 | ||||
4966 | /// BuildAnonymousStructOrUnion - Handle the declaration of an | |||
4967 | /// anonymous structure or union. Anonymous unions are a C++ feature | |||
4968 | /// (C++ [class.union]) and a C11 feature; anonymous structures | |||
4969 | /// are a C11 feature and GNU C++ extension. | |||
4970 | Decl *Sema::BuildAnonymousStructOrUnion(Scope *S, DeclSpec &DS, | |||
4971 | AccessSpecifier AS, | |||
4972 | RecordDecl *Record, | |||
4973 | const PrintingPolicy &Policy) { | |||
4974 | DeclContext *Owner = Record->getDeclContext(); | |||
4975 | ||||
4976 | // Diagnose whether this anonymous struct/union is an extension. | |||
4977 | if (Record->isUnion() && !getLangOpts().CPlusPlus && !getLangOpts().C11) | |||
4978 | Diag(Record->getLocation(), diag::ext_anonymous_union); | |||
4979 | else if (!Record->isUnion() && getLangOpts().CPlusPlus) | |||
4980 | Diag(Record->getLocation(), diag::ext_gnu_anonymous_struct); | |||
4981 | else if (!Record->isUnion() && !getLangOpts().C11) | |||
4982 | Diag(Record->getLocation(), diag::ext_c11_anonymous_struct); | |||
4983 | ||||
4984 | // C and C++ require different kinds of checks for anonymous | |||
4985 | // structs/unions. | |||
4986 | bool Invalid = false; | |||
4987 | if (getLangOpts().CPlusPlus) { | |||
4988 | const char *PrevSpec = nullptr; | |||
4989 | if (Record->isUnion()) { | |||
4990 | // C++ [class.union]p6: | |||
4991 | // C++17 [class.union.anon]p2: | |||
4992 | // Anonymous unions declared in a named namespace or in the | |||
4993 | // global namespace shall be declared static. | |||
4994 | unsigned DiagID; | |||
4995 | DeclContext *OwnerScope = Owner->getRedeclContext(); | |||
4996 | if (DS.getStorageClassSpec() != DeclSpec::SCS_static && | |||
4997 | (OwnerScope->isTranslationUnit() || | |||
4998 | (OwnerScope->isNamespace() && | |||
4999 | !cast<NamespaceDecl>(OwnerScope)->isAnonymousNamespace()))) { | |||
5000 | Diag(Record->getLocation(), diag::err_anonymous_union_not_static) | |||
5001 | << FixItHint::CreateInsertion(Record->getLocation(), "static "); | |||
5002 | ||||
5003 | // Recover by adding 'static'. | |||
5004 | DS.SetStorageClassSpec(*this, DeclSpec::SCS_static, SourceLocation(), | |||
5005 | PrevSpec, DiagID, Policy); | |||
5006 | } | |||
5007 | // C++ [class.union]p6: | |||
5008 | // A storage class is not allowed in a declaration of an | |||
5009 | // anonymous union in a class scope. | |||
5010 | else if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && | |||
5011 | isa<RecordDecl>(Owner)) { | |||
5012 | Diag(DS.getStorageClassSpecLoc(), | |||
5013 | diag::err_anonymous_union_with_storage_spec) | |||
5014 | << FixItHint::CreateRemoval(DS.getStorageClassSpecLoc()); | |||
5015 | ||||
5016 | // Recover by removing the storage specifier. | |||
5017 | DS.SetStorageClassSpec(*this, DeclSpec::SCS_unspecified, | |||
5018 | SourceLocation(), | |||
5019 | PrevSpec, DiagID, Context.getPrintingPolicy()); | |||
5020 | } | |||
5021 | } | |||
5022 | ||||
5023 | // Ignore const/volatile/restrict qualifiers. | |||
5024 | if (DS.getTypeQualifiers()) { | |||
5025 | if (DS.getTypeQualifiers() & DeclSpec::TQ_const) | |||
5026 | Diag(DS.getConstSpecLoc(), diag::ext_anonymous_struct_union_qualified) | |||
5027 | << Record->isUnion() << "const" | |||
5028 | << FixItHint::CreateRemoval(DS.getConstSpecLoc()); | |||
5029 | if (DS.getTypeQualifiers() & DeclSpec::TQ_volatile) | |||
5030 | Diag(DS.getVolatileSpecLoc(), | |||
5031 | diag::ext_anonymous_struct_union_qualified) | |||
5032 | << Record->isUnion() << "volatile" | |||
5033 | << FixItHint::CreateRemoval(DS.getVolatileSpecLoc()); | |||
5034 | if (DS.getTypeQualifiers() & DeclSpec::TQ_restrict) | |||
5035 | Diag(DS.getRestrictSpecLoc(), | |||
5036 | diag::ext_anonymous_struct_union_qualified) | |||
5037 | << Record->isUnion() << "restrict" | |||
5038 | << FixItHint::CreateRemoval(DS.getRestrictSpecLoc()); | |||
5039 | if (DS.getTypeQualifiers() & DeclSpec::TQ_atomic) | |||
5040 | Diag(DS.getAtomicSpecLoc(), | |||
5041 | diag::ext_anonymous_struct_union_qualified) | |||
5042 | << Record->isUnion() << "_Atomic" | |||
5043 | << FixItHint::CreateRemoval(DS.getAtomicSpecLoc()); | |||
5044 | if (DS.getTypeQualifiers() & DeclSpec::TQ_unaligned) | |||
5045 | Diag(DS.getUnalignedSpecLoc(), | |||
5046 | diag::ext_anonymous_struct_union_qualified) | |||
5047 | << Record->isUnion() << "__unaligned" | |||
5048 | << FixItHint::CreateRemoval(DS.getUnalignedSpecLoc()); | |||
5049 | ||||
5050 | DS.ClearTypeQualifiers(); | |||
5051 | } | |||
5052 | ||||
5053 | // C++ [class.union]p2: | |||
5054 | // The member-specification of an anonymous union shall only | |||
5055 | // define non-static data members. [Note: nested types and | |||
5056 | // functions cannot be declared within an anonymous union. ] | |||
5057 | for (auto *Mem : Record->decls()) { | |||
5058 | // Ignore invalid declarations; we already diagnosed them. | |||
5059 | if (Mem->isInvalidDecl()) | |||
5060 | continue; | |||
5061 | ||||
5062 | if (auto *FD = dyn_cast<FieldDecl>(Mem)) { | |||
5063 | // C++ [class.union]p3: | |||
5064 | // An anonymous union shall not have private or protected | |||
5065 | // members (clause 11). | |||
5066 | assert(FD->getAccess() != AS_none)((FD->getAccess() != AS_none) ? static_cast<void> (0 ) : __assert_fail ("FD->getAccess() != AS_none", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 5066, __PRETTY_FUNCTION__)); | |||
5067 | if (FD->getAccess() != AS_public) { | |||
5068 | Diag(FD->getLocation(), diag::err_anonymous_record_nonpublic_member) | |||
5069 | << Record->isUnion() << (FD->getAccess() == AS_protected); | |||
5070 | Invalid = true; | |||
5071 | } | |||
5072 | ||||
5073 | // C++ [class.union]p1 | |||
5074 | // An object of a class with a non-trivial constructor, a non-trivial | |||
5075 | // copy constructor, a non-trivial destructor, or a non-trivial copy | |||
5076 | // assignment operator cannot be a member of a union, nor can an | |||
5077 | // array of such objects. | |||
5078 | if (CheckNontrivialField(FD)) | |||
5079 | Invalid = true; | |||
5080 | } else if (Mem->isImplicit()) { | |||
5081 | // Any implicit members are fine. | |||
5082 | } else if (isa<TagDecl>(Mem) && Mem->getDeclContext() != Record) { | |||
5083 | // This is a type that showed up in an | |||
5084 | // elaborated-type-specifier inside the anonymous struct or | |||
5085 | // union, but which actually declares a type outside of the | |||
5086 | // anonymous struct or union. It's okay. | |||
5087 | } else if (auto *MemRecord = dyn_cast<RecordDecl>(Mem)) { | |||
5088 | if (!MemRecord->isAnonymousStructOrUnion() && | |||
5089 | MemRecord->getDeclName()) { | |||
5090 | // Visual C++ allows type definition in anonymous struct or union. | |||
5091 | if (getLangOpts().MicrosoftExt) | |||
5092 | Diag(MemRecord->getLocation(), diag::ext_anonymous_record_with_type) | |||
5093 | << Record->isUnion(); | |||
5094 | else { | |||
5095 | // This is a nested type declaration. | |||
5096 | Diag(MemRecord->getLocation(), diag::err_anonymous_record_with_type) | |||
5097 | << Record->isUnion(); | |||
5098 | Invalid = true; | |||
5099 | } | |||
5100 | } else { | |||
5101 | // This is an anonymous type definition within another anonymous type. | |||
5102 | // This is a popular extension, provided by Plan9, MSVC and GCC, but | |||
5103 | // not part of standard C++. | |||
5104 | Diag(MemRecord->getLocation(), | |||
5105 | diag::ext_anonymous_record_with_anonymous_type) | |||
5106 | << Record->isUnion(); | |||
5107 | } | |||
5108 | } else if (isa<AccessSpecDecl>(Mem)) { | |||
5109 | // Any access specifier is fine. | |||
5110 | } else if (isa<StaticAssertDecl>(Mem)) { | |||
5111 | // In C++1z, static_assert declarations are also fine. | |||
5112 | } else { | |||
5113 | // We have something that isn't a non-static data | |||
5114 | // member. Complain about it. | |||
5115 | unsigned DK = diag::err_anonymous_record_bad_member; | |||
5116 | if (isa<TypeDecl>(Mem)) | |||
5117 | DK = diag::err_anonymous_record_with_type; | |||
5118 | else if (isa<FunctionDecl>(Mem)) | |||
5119 | DK = diag::err_anonymous_record_with_function; | |||
5120 | else if (isa<VarDecl>(Mem)) | |||
5121 | DK = diag::err_anonymous_record_with_static; | |||
5122 | ||||
5123 | // Visual C++ allows type definition in anonymous struct or union. | |||
5124 | if (getLangOpts().MicrosoftExt && | |||
5125 | DK == diag::err_anonymous_record_with_type) | |||
5126 | Diag(Mem->getLocation(), diag::ext_anonymous_record_with_type) | |||
5127 | << Record->isUnion(); | |||
5128 | else { | |||
5129 | Diag(Mem->getLocation(), DK) << Record->isUnion(); | |||
5130 | Invalid = true; | |||
5131 | } | |||
5132 | } | |||
5133 | } | |||
5134 | ||||
5135 | // C++11 [class.union]p8 (DR1460): | |||
5136 | // At most one variant member of a union may have a | |||
5137 | // brace-or-equal-initializer. | |||
5138 | if (cast<CXXRecordDecl>(Record)->hasInClassInitializer() && | |||
5139 | Owner->isRecord()) | |||
5140 | checkDuplicateDefaultInit(*this, cast<CXXRecordDecl>(Owner), | |||
5141 | cast<CXXRecordDecl>(Record)); | |||
5142 | } | |||
5143 | ||||
5144 | if (!Record->isUnion() && !Owner->isRecord()) { | |||
5145 | Diag(Record->getLocation(), diag::err_anonymous_struct_not_member) | |||
5146 | << getLangOpts().CPlusPlus; | |||
5147 | Invalid = true; | |||
5148 | } | |||
5149 | ||||
5150 | // C++ [dcl.dcl]p3: | |||
5151 | // [If there are no declarators], and except for the declaration of an | |||
5152 | // unnamed bit-field, the decl-specifier-seq shall introduce one or more | |||
5153 | // names into the program | |||
5154 | // C++ [class.mem]p2: | |||
5155 | // each such member-declaration shall either declare at least one member | |||
5156 | // name of the class or declare at least one unnamed bit-field | |||
5157 | // | |||
5158 | // For C this is an error even for a named struct, and is diagnosed elsewhere. | |||
5159 | if (getLangOpts().CPlusPlus && Record->field_empty()) | |||
5160 | Diag(DS.getBeginLoc(), diag::ext_no_declarators) << DS.getSourceRange(); | |||
5161 | ||||
5162 | // Mock up a declarator. | |||
5163 | Declarator Dc(DS, DeclaratorContext::Member); | |||
5164 | TypeSourceInfo *TInfo = GetTypeForDeclarator(Dc, S); | |||
5165 | assert(TInfo && "couldn't build declarator info for anonymous struct/union")((TInfo && "couldn't build declarator info for anonymous struct/union" ) ? static_cast<void> (0) : __assert_fail ("TInfo && \"couldn't build declarator info for anonymous struct/union\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 5165, __PRETTY_FUNCTION__)); | |||
5166 | ||||
5167 | // Create a declaration for this anonymous struct/union. | |||
5168 | NamedDecl *Anon = nullptr; | |||
5169 | if (RecordDecl *OwningClass = dyn_cast<RecordDecl>(Owner)) { | |||
5170 | Anon = FieldDecl::Create( | |||
5171 | Context, OwningClass, DS.getBeginLoc(), Record->getLocation(), | |||
5172 | /*IdentifierInfo=*/nullptr, Context.getTypeDeclType(Record), TInfo, | |||
5173 | /*BitWidth=*/nullptr, /*Mutable=*/false, | |||
5174 | /*InitStyle=*/ICIS_NoInit); | |||
5175 | Anon->setAccess(AS); | |||
5176 | ProcessDeclAttributes(S, Anon, Dc); | |||
5177 | ||||
5178 | if (getLangOpts().CPlusPlus) | |||
5179 | FieldCollector->Add(cast<FieldDecl>(Anon)); | |||
5180 | } else { | |||
5181 | DeclSpec::SCS SCSpec = DS.getStorageClassSpec(); | |||
5182 | StorageClass SC = StorageClassSpecToVarDeclStorageClass(DS); | |||
5183 | if (SCSpec == DeclSpec::SCS_mutable) { | |||
5184 | // mutable can only appear on non-static class members, so it's always | |||
5185 | // an error here | |||
5186 | Diag(Record->getLocation(), diag::err_mutable_nonmember); | |||
5187 | Invalid = true; | |||
5188 | SC = SC_None; | |||
5189 | } | |||
5190 | ||||
5191 | assert(DS.getAttributes().empty() && "No attribute expected")((DS.getAttributes().empty() && "No attribute expected" ) ? static_cast<void> (0) : __assert_fail ("DS.getAttributes().empty() && \"No attribute expected\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 5191, __PRETTY_FUNCTION__)); | |||
5192 | Anon = VarDecl::Create(Context, Owner, DS.getBeginLoc(), | |||
5193 | Record->getLocation(), /*IdentifierInfo=*/nullptr, | |||
5194 | Context.getTypeDeclType(Record), TInfo, SC); | |||
5195 | ||||
5196 | // Default-initialize the implicit variable. This initialization will be | |||
5197 | // trivial in almost all cases, except if a union member has an in-class | |||
5198 | // initializer: | |||
5199 | // union { int n = 0; }; | |||
5200 | ActOnUninitializedDecl(Anon); | |||
5201 | } | |||
5202 | Anon->setImplicit(); | |||
5203 | ||||
5204 | // Mark this as an anonymous struct/union type. | |||
5205 | Record->setAnonymousStructOrUnion(true); | |||
5206 | ||||
5207 | // Add the anonymous struct/union object to the current | |||
5208 | // context. We'll be referencing this object when we refer to one of | |||
5209 | // its members. | |||
5210 | Owner->addDecl(Anon); | |||
5211 | ||||
5212 | // Inject the members of the anonymous struct/union into the owning | |||
5213 | // context and into the identifier resolver chain for name lookup | |||
5214 | // purposes. | |||
5215 | SmallVector<NamedDecl*, 2> Chain; | |||
5216 | Chain.push_back(Anon); | |||
5217 | ||||
5218 | if (InjectAnonymousStructOrUnionMembers(*this, S, Owner, Record, AS, Chain)) | |||
5219 | Invalid = true; | |||
5220 | ||||
5221 | if (VarDecl *NewVD = dyn_cast<VarDecl>(Anon)) { | |||
5222 | if (getLangOpts().CPlusPlus && NewVD->isStaticLocal()) { | |||
5223 | MangleNumberingContext *MCtx; | |||
5224 | Decl *ManglingContextDecl; | |||
5225 | std::tie(MCtx, ManglingContextDecl) = | |||
5226 | getCurrentMangleNumberContext(NewVD->getDeclContext()); | |||
5227 | if (MCtx) { | |||
5228 | Context.setManglingNumber( | |||
5229 | NewVD, MCtx->getManglingNumber( | |||
5230 | NewVD, getMSManglingNumber(getLangOpts(), S))); | |||
5231 | Context.setStaticLocalNumber(NewVD, MCtx->getStaticLocalNumber(NewVD)); | |||
5232 | } | |||
5233 | } | |||
5234 | } | |||
5235 | ||||
5236 | if (Invalid) | |||
5237 | Anon->setInvalidDecl(); | |||
5238 | ||||
5239 | return Anon; | |||
5240 | } | |||
5241 | ||||
5242 | /// BuildMicrosoftCAnonymousStruct - Handle the declaration of an | |||
5243 | /// Microsoft C anonymous structure. | |||
5244 | /// Ref: http://msdn.microsoft.com/en-us/library/z2cx9y4f.aspx | |||
5245 | /// Example: | |||
5246 | /// | |||
5247 | /// struct A { int a; }; | |||
5248 | /// struct B { struct A; int b; }; | |||
5249 | /// | |||
5250 | /// void foo() { | |||
5251 | /// B var; | |||
5252 | /// var.a = 3; | |||
5253 | /// } | |||
5254 | /// | |||
5255 | Decl *Sema::BuildMicrosoftCAnonymousStruct(Scope *S, DeclSpec &DS, | |||
5256 | RecordDecl *Record) { | |||
5257 | assert(Record && "expected a record!")((Record && "expected a record!") ? static_cast<void > (0) : __assert_fail ("Record && \"expected a record!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 5257, __PRETTY_FUNCTION__)); | |||
5258 | ||||
5259 | // Mock up a declarator. | |||
5260 | Declarator Dc(DS, DeclaratorContext::TypeName); | |||
5261 | TypeSourceInfo *TInfo = GetTypeForDeclarator(Dc, S); | |||
5262 | assert(TInfo && "couldn't build declarator info for anonymous struct")((TInfo && "couldn't build declarator info for anonymous struct" ) ? static_cast<void> (0) : __assert_fail ("TInfo && \"couldn't build declarator info for anonymous struct\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 5262, __PRETTY_FUNCTION__)); | |||
5263 | ||||
5264 | auto *ParentDecl = cast<RecordDecl>(CurContext); | |||
5265 | QualType RecTy = Context.getTypeDeclType(Record); | |||
5266 | ||||
5267 | // Create a declaration for this anonymous struct. | |||
5268 | NamedDecl *Anon = | |||
5269 | FieldDecl::Create(Context, ParentDecl, DS.getBeginLoc(), DS.getBeginLoc(), | |||
5270 | /*IdentifierInfo=*/nullptr, RecTy, TInfo, | |||
5271 | /*BitWidth=*/nullptr, /*Mutable=*/false, | |||
5272 | /*InitStyle=*/ICIS_NoInit); | |||
5273 | Anon->setImplicit(); | |||
5274 | ||||
5275 | // Add the anonymous struct object to the current context. | |||
5276 | CurContext->addDecl(Anon); | |||
5277 | ||||
5278 | // Inject the members of the anonymous struct into the current | |||
5279 | // context and into the identifier resolver chain for name lookup | |||
5280 | // purposes. | |||
5281 | SmallVector<NamedDecl*, 2> Chain; | |||
5282 | Chain.push_back(Anon); | |||
5283 | ||||
5284 | RecordDecl *RecordDef = Record->getDefinition(); | |||
5285 | if (RequireCompleteSizedType(Anon->getLocation(), RecTy, | |||
5286 | diag::err_field_incomplete_or_sizeless) || | |||
5287 | InjectAnonymousStructOrUnionMembers(*this, S, CurContext, RecordDef, | |||
5288 | AS_none, Chain)) { | |||
5289 | Anon->setInvalidDecl(); | |||
5290 | ParentDecl->setInvalidDecl(); | |||
5291 | } | |||
5292 | ||||
5293 | return Anon; | |||
5294 | } | |||
5295 | ||||
5296 | /// GetNameForDeclarator - Determine the full declaration name for the | |||
5297 | /// given Declarator. | |||
5298 | DeclarationNameInfo Sema::GetNameForDeclarator(Declarator &D) { | |||
5299 | return GetNameFromUnqualifiedId(D.getName()); | |||
5300 | } | |||
5301 | ||||
5302 | /// Retrieves the declaration name from a parsed unqualified-id. | |||
5303 | DeclarationNameInfo | |||
5304 | Sema::GetNameFromUnqualifiedId(const UnqualifiedId &Name) { | |||
5305 | DeclarationNameInfo NameInfo; | |||
5306 | NameInfo.setLoc(Name.StartLocation); | |||
5307 | ||||
5308 | switch (Name.getKind()) { | |||
5309 | ||||
5310 | case UnqualifiedIdKind::IK_ImplicitSelfParam: | |||
5311 | case UnqualifiedIdKind::IK_Identifier: | |||
5312 | NameInfo.setName(Name.Identifier); | |||
5313 | return NameInfo; | |||
5314 | ||||
5315 | case UnqualifiedIdKind::IK_DeductionGuideName: { | |||
5316 | // C++ [temp.deduct.guide]p3: | |||
5317 | // The simple-template-id shall name a class template specialization. | |||
5318 | // The template-name shall be the same identifier as the template-name | |||
5319 | // of the simple-template-id. | |||
5320 | // These together intend to imply that the template-name shall name a | |||
5321 | // class template. | |||
5322 | // FIXME: template<typename T> struct X {}; | |||
5323 | // template<typename T> using Y = X<T>; | |||
5324 | // Y(int) -> Y<int>; | |||
5325 | // satisfies these rules but does not name a class template. | |||
5326 | TemplateName TN = Name.TemplateName.get().get(); | |||
5327 | auto *Template = TN.getAsTemplateDecl(); | |||
5328 | if (!Template || !isa<ClassTemplateDecl>(Template)) { | |||
5329 | Diag(Name.StartLocation, | |||
5330 | diag::err_deduction_guide_name_not_class_template) | |||
5331 | << (int)getTemplateNameKindForDiagnostics(TN) << TN; | |||
5332 | if (Template) | |||
5333 | Diag(Template->getLocation(), diag::note_template_decl_here); | |||
5334 | return DeclarationNameInfo(); | |||
5335 | } | |||
5336 | ||||
5337 | NameInfo.setName( | |||
5338 | Context.DeclarationNames.getCXXDeductionGuideName(Template)); | |||
5339 | return NameInfo; | |||
5340 | } | |||
5341 | ||||
5342 | case UnqualifiedIdKind::IK_OperatorFunctionId: | |||
5343 | NameInfo.setName(Context.DeclarationNames.getCXXOperatorName( | |||
5344 | Name.OperatorFunctionId.Operator)); | |||
5345 | NameInfo.getInfo().CXXOperatorName.BeginOpNameLoc | |||
5346 | = Name.OperatorFunctionId.SymbolLocations[0]; | |||
5347 | NameInfo.getInfo().CXXOperatorName.EndOpNameLoc | |||
5348 | = Name.EndLocation.getRawEncoding(); | |||
5349 | return NameInfo; | |||
5350 | ||||
5351 | case UnqualifiedIdKind::IK_LiteralOperatorId: | |||
5352 | NameInfo.setName(Context.DeclarationNames.getCXXLiteralOperatorName( | |||
5353 | Name.Identifier)); | |||
5354 | NameInfo.setCXXLiteralOperatorNameLoc(Name.EndLocation); | |||
5355 | return NameInfo; | |||
5356 | ||||
5357 | case UnqualifiedIdKind::IK_ConversionFunctionId: { | |||
5358 | TypeSourceInfo *TInfo; | |||
5359 | QualType Ty = GetTypeFromParser(Name.ConversionFunctionId, &TInfo); | |||
5360 | if (Ty.isNull()) | |||
5361 | return DeclarationNameInfo(); | |||
5362 | NameInfo.setName(Context.DeclarationNames.getCXXConversionFunctionName( | |||
5363 | Context.getCanonicalType(Ty))); | |||
5364 | NameInfo.setNamedTypeInfo(TInfo); | |||
5365 | return NameInfo; | |||
5366 | } | |||
5367 | ||||
5368 | case UnqualifiedIdKind::IK_ConstructorName: { | |||
5369 | TypeSourceInfo *TInfo; | |||
5370 | QualType Ty = GetTypeFromParser(Name.ConstructorName, &TInfo); | |||
5371 | if (Ty.isNull()) | |||
5372 | return DeclarationNameInfo(); | |||
5373 | NameInfo.setName(Context.DeclarationNames.getCXXConstructorName( | |||
5374 | Context.getCanonicalType(Ty))); | |||
5375 | NameInfo.setNamedTypeInfo(TInfo); | |||
5376 | return NameInfo; | |||
5377 | } | |||
5378 | ||||
5379 | case UnqualifiedIdKind::IK_ConstructorTemplateId: { | |||
5380 | // In well-formed code, we can only have a constructor | |||
5381 | // template-id that refers to the current context, so go there | |||
5382 | // to find the actual type being constructed. | |||
5383 | CXXRecordDecl *CurClass = dyn_cast<CXXRecordDecl>(CurContext); | |||
5384 | if (!CurClass || CurClass->getIdentifier() != Name.TemplateId->Name) | |||
5385 | return DeclarationNameInfo(); | |||
5386 | ||||
5387 | // Determine the type of the class being constructed. | |||
5388 | QualType CurClassType = Context.getTypeDeclType(CurClass); | |||
5389 | ||||
5390 | // FIXME: Check two things: that the template-id names the same type as | |||
5391 | // CurClassType, and that the template-id does not occur when the name | |||
5392 | // was qualified. | |||
5393 | ||||
5394 | NameInfo.setName(Context.DeclarationNames.getCXXConstructorName( | |||
5395 | Context.getCanonicalType(CurClassType))); | |||
5396 | // FIXME: should we retrieve TypeSourceInfo? | |||
5397 | NameInfo.setNamedTypeInfo(nullptr); | |||
5398 | return NameInfo; | |||
5399 | } | |||
5400 | ||||
5401 | case UnqualifiedIdKind::IK_DestructorName: { | |||
5402 | TypeSourceInfo *TInfo; | |||
5403 | QualType Ty = GetTypeFromParser(Name.DestructorName, &TInfo); | |||
5404 | if (Ty.isNull()) | |||
5405 | return DeclarationNameInfo(); | |||
5406 | NameInfo.setName(Context.DeclarationNames.getCXXDestructorName( | |||
5407 | Context.getCanonicalType(Ty))); | |||
5408 | NameInfo.setNamedTypeInfo(TInfo); | |||
5409 | return NameInfo; | |||
5410 | } | |||
5411 | ||||
5412 | case UnqualifiedIdKind::IK_TemplateId: { | |||
5413 | TemplateName TName = Name.TemplateId->Template.get(); | |||
5414 | SourceLocation TNameLoc = Name.TemplateId->TemplateNameLoc; | |||
5415 | return Context.getNameForTemplate(TName, TNameLoc); | |||
5416 | } | |||
5417 | ||||
5418 | } // switch (Name.getKind()) | |||
5419 | ||||
5420 | llvm_unreachable("Unknown name kind")::llvm::llvm_unreachable_internal("Unknown name kind", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 5420); | |||
5421 | } | |||
5422 | ||||
5423 | static QualType getCoreType(QualType Ty) { | |||
5424 | do { | |||
5425 | if (Ty->isPointerType() || Ty->isReferenceType()) | |||
5426 | Ty = Ty->getPointeeType(); | |||
5427 | else if (Ty->isArrayType()) | |||
5428 | Ty = Ty->castAsArrayTypeUnsafe()->getElementType(); | |||
5429 | else | |||
5430 | return Ty.withoutLocalFastQualifiers(); | |||
5431 | } while (true); | |||
5432 | } | |||
5433 | ||||
5434 | /// hasSimilarParameters - Determine whether the C++ functions Declaration | |||
5435 | /// and Definition have "nearly" matching parameters. This heuristic is | |||
5436 | /// used to improve diagnostics in the case where an out-of-line function | |||
5437 | /// definition doesn't match any declaration within the class or namespace. | |||
5438 | /// Also sets Params to the list of indices to the parameters that differ | |||
5439 | /// between the declaration and the definition. If hasSimilarParameters | |||
5440 | /// returns true and Params is empty, then all of the parameters match. | |||
5441 | static bool hasSimilarParameters(ASTContext &Context, | |||
5442 | FunctionDecl *Declaration, | |||
5443 | FunctionDecl *Definition, | |||
5444 | SmallVectorImpl<unsigned> &Params) { | |||
5445 | Params.clear(); | |||
5446 | if (Declaration->param_size() != Definition->param_size()) | |||
5447 | return false; | |||
5448 | for (unsigned Idx = 0; Idx < Declaration->param_size(); ++Idx) { | |||
5449 | QualType DeclParamTy = Declaration->getParamDecl(Idx)->getType(); | |||
5450 | QualType DefParamTy = Definition->getParamDecl(Idx)->getType(); | |||
5451 | ||||
5452 | // The parameter types are identical | |||
5453 | if (Context.hasSameUnqualifiedType(DefParamTy, DeclParamTy)) | |||
5454 | continue; | |||
5455 | ||||
5456 | QualType DeclParamBaseTy = getCoreType(DeclParamTy); | |||
5457 | QualType DefParamBaseTy = getCoreType(DefParamTy); | |||
5458 | const IdentifierInfo *DeclTyName = DeclParamBaseTy.getBaseTypeIdentifier(); | |||
5459 | const IdentifierInfo *DefTyName = DefParamBaseTy.getBaseTypeIdentifier(); | |||
5460 | ||||
5461 | if (Context.hasSameUnqualifiedType(DeclParamBaseTy, DefParamBaseTy) || | |||
5462 | (DeclTyName && DeclTyName == DefTyName)) | |||
5463 | Params.push_back(Idx); | |||
5464 | else // The two parameters aren't even close | |||
5465 | return false; | |||
5466 | } | |||
5467 | ||||
5468 | return true; | |||
5469 | } | |||
5470 | ||||
5471 | /// NeedsRebuildingInCurrentInstantiation - Checks whether the given | |||
5472 | /// declarator needs to be rebuilt in the current instantiation. | |||
5473 | /// Any bits of declarator which appear before the name are valid for | |||
5474 | /// consideration here. That's specifically the type in the decl spec | |||
5475 | /// and the base type in any member-pointer chunks. | |||
5476 | static bool RebuildDeclaratorInCurrentInstantiation(Sema &S, Declarator &D, | |||
5477 | DeclarationName Name) { | |||
5478 | // The types we specifically need to rebuild are: | |||
5479 | // - typenames, typeofs, and decltypes | |||
5480 | // - types which will become injected class names | |||
5481 | // Of course, we also need to rebuild any type referencing such a | |||
5482 | // type. It's safest to just say "dependent", but we call out a | |||
5483 | // few cases here. | |||
5484 | ||||
5485 | DeclSpec &DS = D.getMutableDeclSpec(); | |||
5486 | switch (DS.getTypeSpecType()) { | |||
5487 | case DeclSpec::TST_typename: | |||
5488 | case DeclSpec::TST_typeofType: | |||
5489 | case DeclSpec::TST_underlyingType: | |||
5490 | case DeclSpec::TST_atomic: { | |||
5491 | // Grab the type from the parser. | |||
5492 | TypeSourceInfo *TSI = nullptr; | |||
5493 | QualType T = S.GetTypeFromParser(DS.getRepAsType(), &TSI); | |||
5494 | if (T.isNull() || !T->isDependentType()) break; | |||
5495 | ||||
5496 | // Make sure there's a type source info. This isn't really much | |||
5497 | // of a waste; most dependent types should have type source info | |||
5498 | // attached already. | |||
5499 | if (!TSI) | |||
5500 | TSI = S.Context.getTrivialTypeSourceInfo(T, DS.getTypeSpecTypeLoc()); | |||
5501 | ||||
5502 | // Rebuild the type in the current instantiation. | |||
5503 | TSI = S.RebuildTypeInCurrentInstantiation(TSI, D.getIdentifierLoc(), Name); | |||
5504 | if (!TSI) return true; | |||
5505 | ||||
5506 | // Store the new type back in the decl spec. | |||
5507 | ParsedType LocType = S.CreateParsedType(TSI->getType(), TSI); | |||
5508 | DS.UpdateTypeRep(LocType); | |||
5509 | break; | |||
5510 | } | |||
5511 | ||||
5512 | case DeclSpec::TST_decltype: | |||
5513 | case DeclSpec::TST_typeofExpr: { | |||
5514 | Expr *E = DS.getRepAsExpr(); | |||
5515 | ExprResult Result = S.RebuildExprInCurrentInstantiation(E); | |||
5516 | if (Result.isInvalid()) return true; | |||
5517 | DS.UpdateExprRep(Result.get()); | |||
5518 | break; | |||
5519 | } | |||
5520 | ||||
5521 | default: | |||
5522 | // Nothing to do for these decl specs. | |||
5523 | break; | |||
5524 | } | |||
5525 | ||||
5526 | // It doesn't matter what order we do this in. | |||
5527 | for (unsigned I = 0, E = D.getNumTypeObjects(); I != E; ++I) { | |||
5528 | DeclaratorChunk &Chunk = D.getTypeObject(I); | |||
5529 | ||||
5530 | // The only type information in the declarator which can come | |||
5531 | // before the declaration name is the base type of a member | |||
5532 | // pointer. | |||
5533 | if (Chunk.Kind != DeclaratorChunk::MemberPointer) | |||
5534 | continue; | |||
5535 | ||||
5536 | // Rebuild the scope specifier in-place. | |||
5537 | CXXScopeSpec &SS = Chunk.Mem.Scope(); | |||
5538 | if (S.RebuildNestedNameSpecifierInCurrentInstantiation(SS)) | |||
5539 | return true; | |||
5540 | } | |||
5541 | ||||
5542 | return false; | |||
5543 | } | |||
5544 | ||||
5545 | Decl *Sema::ActOnDeclarator(Scope *S, Declarator &D) { | |||
5546 | D.setFunctionDefinitionKind(FunctionDefinitionKind::Declaration); | |||
5547 | Decl *Dcl = HandleDeclarator(S, D, MultiTemplateParamsArg()); | |||
5548 | ||||
5549 | if (OriginalLexicalContext && OriginalLexicalContext->isObjCContainer() && | |||
5550 | Dcl && Dcl->getDeclContext()->isFileContext()) | |||
5551 | Dcl->setTopLevelDeclInObjCContainer(); | |||
5552 | ||||
5553 | if (getLangOpts().OpenCL) | |||
5554 | setCurrentOpenCLExtensionForDecl(Dcl); | |||
5555 | ||||
5556 | return Dcl; | |||
5557 | } | |||
5558 | ||||
5559 | /// DiagnoseClassNameShadow - Implement C++ [class.mem]p13: | |||
5560 | /// If T is the name of a class, then each of the following shall have a | |||
5561 | /// name different from T: | |||
5562 | /// - every static data member of class T; | |||
5563 | /// - every member function of class T | |||
5564 | /// - every member of class T that is itself a type; | |||
5565 | /// \returns true if the declaration name violates these rules. | |||
5566 | bool Sema::DiagnoseClassNameShadow(DeclContext *DC, | |||
5567 | DeclarationNameInfo NameInfo) { | |||
5568 | DeclarationName Name = NameInfo.getName(); | |||
5569 | ||||
5570 | CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(DC); | |||
5571 | while (Record && Record->isAnonymousStructOrUnion()) | |||
5572 | Record = dyn_cast<CXXRecordDecl>(Record->getParent()); | |||
5573 | if (Record && Record->getIdentifier() && Record->getDeclName() == Name) { | |||
5574 | Diag(NameInfo.getLoc(), diag::err_member_name_of_class) << Name; | |||
5575 | return true; | |||
5576 | } | |||
5577 | ||||
5578 | return false; | |||
5579 | } | |||
5580 | ||||
5581 | /// Diagnose a declaration whose declarator-id has the given | |||
5582 | /// nested-name-specifier. | |||
5583 | /// | |||
5584 | /// \param SS The nested-name-specifier of the declarator-id. | |||
5585 | /// | |||
5586 | /// \param DC The declaration context to which the nested-name-specifier | |||
5587 | /// resolves. | |||
5588 | /// | |||
5589 | /// \param Name The name of the entity being declared. | |||
5590 | /// | |||
5591 | /// \param Loc The location of the name of the entity being declared. | |||
5592 | /// | |||
5593 | /// \param IsTemplateId Whether the name is a (simple-)template-id, and thus | |||
5594 | /// we're declaring an explicit / partial specialization / instantiation. | |||
5595 | /// | |||
5596 | /// \returns true if we cannot safely recover from this error, false otherwise. | |||
5597 | bool Sema::diagnoseQualifiedDeclaration(CXXScopeSpec &SS, DeclContext *DC, | |||
5598 | DeclarationName Name, | |||
5599 | SourceLocation Loc, bool IsTemplateId) { | |||
5600 | DeclContext *Cur = CurContext; | |||
5601 | while (isa<LinkageSpecDecl>(Cur) || isa<CapturedDecl>(Cur)) | |||
5602 | Cur = Cur->getParent(); | |||
5603 | ||||
5604 | // If the user provided a superfluous scope specifier that refers back to the | |||
5605 | // class in which the entity is already declared, diagnose and ignore it. | |||
5606 | // | |||
5607 | // class X { | |||
5608 | // void X::f(); | |||
5609 | // }; | |||
5610 | // | |||
5611 | // Note, it was once ill-formed to give redundant qualification in all | |||
5612 | // contexts, but that rule was removed by DR482. | |||
5613 | if (Cur->Equals(DC)) { | |||
5614 | if (Cur->isRecord()) { | |||
5615 | Diag(Loc, LangOpts.MicrosoftExt ? diag::warn_member_extra_qualification | |||
5616 | : diag::err_member_extra_qualification) | |||
5617 | << Name << FixItHint::CreateRemoval(SS.getRange()); | |||
5618 | SS.clear(); | |||
5619 | } else { | |||
5620 | Diag(Loc, diag::warn_namespace_member_extra_qualification) << Name; | |||
5621 | } | |||
5622 | return false; | |||
5623 | } | |||
5624 | ||||
5625 | // Check whether the qualifying scope encloses the scope of the original | |||
5626 | // declaration. For a template-id, we perform the checks in | |||
5627 | // CheckTemplateSpecializationScope. | |||
5628 | if (!Cur->Encloses(DC) && !IsTemplateId) { | |||
5629 | if (Cur->isRecord()) | |||
5630 | Diag(Loc, diag::err_member_qualification) | |||
5631 | << Name << SS.getRange(); | |||
5632 | else if (isa<TranslationUnitDecl>(DC)) | |||
5633 | Diag(Loc, diag::err_invalid_declarator_global_scope) | |||
5634 | << Name << SS.getRange(); | |||
5635 | else if (isa<FunctionDecl>(Cur)) | |||
5636 | Diag(Loc, diag::err_invalid_declarator_in_function) | |||
5637 | << Name << SS.getRange(); | |||
5638 | else if (isa<BlockDecl>(Cur)) | |||
5639 | Diag(Loc, diag::err_invalid_declarator_in_block) | |||
5640 | << Name << SS.getRange(); | |||
5641 | else | |||
5642 | Diag(Loc, diag::err_invalid_declarator_scope) | |||
5643 | << Name << cast<NamedDecl>(Cur) << cast<NamedDecl>(DC) << SS.getRange(); | |||
5644 | ||||
5645 | return true; | |||
5646 | } | |||
5647 | ||||
5648 | if (Cur->isRecord()) { | |||
5649 | // Cannot qualify members within a class. | |||
5650 | Diag(Loc, diag::err_member_qualification) | |||
5651 | << Name << SS.getRange(); | |||
5652 | SS.clear(); | |||
5653 | ||||
5654 | // C++ constructors and destructors with incorrect scopes can break | |||
5655 | // our AST invariants by having the wrong underlying types. If | |||
5656 | // that's the case, then drop this declaration entirely. | |||
5657 | if ((Name.getNameKind() == DeclarationName::CXXConstructorName || | |||
5658 | Name.getNameKind() == DeclarationName::CXXDestructorName) && | |||
5659 | !Context.hasSameType(Name.getCXXNameType(), | |||
5660 | Context.getTypeDeclType(cast<CXXRecordDecl>(Cur)))) | |||
5661 | return true; | |||
5662 | ||||
5663 | return false; | |||
5664 | } | |||
5665 | ||||
5666 | // C++11 [dcl.meaning]p1: | |||
5667 | // [...] "The nested-name-specifier of the qualified declarator-id shall | |||
5668 | // not begin with a decltype-specifer" | |||
5669 | NestedNameSpecifierLoc SpecLoc(SS.getScopeRep(), SS.location_data()); | |||
5670 | while (SpecLoc.getPrefix()) | |||
5671 | SpecLoc = SpecLoc.getPrefix(); | |||
5672 | if (dyn_cast_or_null<DecltypeType>( | |||
5673 | SpecLoc.getNestedNameSpecifier()->getAsType())) | |||
5674 | Diag(Loc, diag::err_decltype_in_declarator) | |||
5675 | << SpecLoc.getTypeLoc().getSourceRange(); | |||
5676 | ||||
5677 | return false; | |||
5678 | } | |||
5679 | ||||
5680 | NamedDecl *Sema::HandleDeclarator(Scope *S, Declarator &D, | |||
5681 | MultiTemplateParamsArg TemplateParamLists) { | |||
5682 | // TODO: consider using NameInfo for diagnostic. | |||
5683 | DeclarationNameInfo NameInfo = GetNameForDeclarator(D); | |||
5684 | DeclarationName Name = NameInfo.getName(); | |||
5685 | ||||
5686 | // All of these full declarators require an identifier. If it doesn't have | |||
5687 | // one, the ParsedFreeStandingDeclSpec action should be used. | |||
5688 | if (D.isDecompositionDeclarator()) { | |||
5689 | return ActOnDecompositionDeclarator(S, D, TemplateParamLists); | |||
5690 | } else if (!Name) { | |||
5691 | if (!D.isInvalidType()) // Reject this if we think it is valid. | |||
5692 | Diag(D.getDeclSpec().getBeginLoc(), diag::err_declarator_need_ident) | |||
5693 | << D.getDeclSpec().getSourceRange() << D.getSourceRange(); | |||
5694 | return nullptr; | |||
5695 | } else if (DiagnoseUnexpandedParameterPack(NameInfo, UPPC_DeclarationType)) | |||
5696 | return nullptr; | |||
5697 | ||||
5698 | // The scope passed in may not be a decl scope. Zip up the scope tree until | |||
5699 | // we find one that is. | |||
5700 | while ((S->getFlags() & Scope::DeclScope) == 0 || | |||
5701 | (S->getFlags() & Scope::TemplateParamScope) != 0) | |||
5702 | S = S->getParent(); | |||
5703 | ||||
5704 | DeclContext *DC = CurContext; | |||
5705 | if (D.getCXXScopeSpec().isInvalid()) | |||
5706 | D.setInvalidType(); | |||
5707 | else if (D.getCXXScopeSpec().isSet()) { | |||
5708 | if (DiagnoseUnexpandedParameterPack(D.getCXXScopeSpec(), | |||
5709 | UPPC_DeclarationQualifier)) | |||
5710 | return nullptr; | |||
5711 | ||||
5712 | bool EnteringContext = !D.getDeclSpec().isFriendSpecified(); | |||
5713 | DC = computeDeclContext(D.getCXXScopeSpec(), EnteringContext); | |||
5714 | if (!DC || isa<EnumDecl>(DC)) { | |||
5715 | // If we could not compute the declaration context, it's because the | |||
5716 | // declaration context is dependent but does not refer to a class, | |||
5717 | // class template, or class template partial specialization. Complain | |||
5718 | // and return early, to avoid the coming semantic disaster. | |||
5719 | Diag(D.getIdentifierLoc(), | |||
5720 | diag::err_template_qualified_declarator_no_match) | |||
5721 | << D.getCXXScopeSpec().getScopeRep() | |||
5722 | << D.getCXXScopeSpec().getRange(); | |||
5723 | return nullptr; | |||
5724 | } | |||
5725 | bool IsDependentContext = DC->isDependentContext(); | |||
5726 | ||||
5727 | if (!IsDependentContext && | |||
5728 | RequireCompleteDeclContext(D.getCXXScopeSpec(), DC)) | |||
5729 | return nullptr; | |||
5730 | ||||
5731 | // If a class is incomplete, do not parse entities inside it. | |||
5732 | if (isa<CXXRecordDecl>(DC) && !cast<CXXRecordDecl>(DC)->hasDefinition()) { | |||
5733 | Diag(D.getIdentifierLoc(), | |||
5734 | diag::err_member_def_undefined_record) | |||
5735 | << Name << DC << D.getCXXScopeSpec().getRange(); | |||
5736 | return nullptr; | |||
5737 | } | |||
5738 | if (!D.getDeclSpec().isFriendSpecified()) { | |||
5739 | if (diagnoseQualifiedDeclaration( | |||
5740 | D.getCXXScopeSpec(), DC, Name, D.getIdentifierLoc(), | |||
5741 | D.getName().getKind() == UnqualifiedIdKind::IK_TemplateId)) { | |||
5742 | if (DC->isRecord()) | |||
5743 | return nullptr; | |||
5744 | ||||
5745 | D.setInvalidType(); | |||
5746 | } | |||
5747 | } | |||
5748 | ||||
5749 | // Check whether we need to rebuild the type of the given | |||
5750 | // declaration in the current instantiation. | |||
5751 | if (EnteringContext && IsDependentContext && | |||
5752 | TemplateParamLists.size() != 0) { | |||
5753 | ContextRAII SavedContext(*this, DC); | |||
5754 | if (RebuildDeclaratorInCurrentInstantiation(*this, D, Name)) | |||
5755 | D.setInvalidType(); | |||
5756 | } | |||
5757 | } | |||
5758 | ||||
5759 | TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); | |||
5760 | QualType R = TInfo->getType(); | |||
5761 | ||||
5762 | if (DiagnoseUnexpandedParameterPack(D.getIdentifierLoc(), TInfo, | |||
5763 | UPPC_DeclarationType)) | |||
5764 | D.setInvalidType(); | |||
5765 | ||||
5766 | LookupResult Previous(*this, NameInfo, LookupOrdinaryName, | |||
5767 | forRedeclarationInCurContext()); | |||
5768 | ||||
5769 | // See if this is a redefinition of a variable in the same scope. | |||
5770 | if (!D.getCXXScopeSpec().isSet()) { | |||
5771 | bool IsLinkageLookup = false; | |||
5772 | bool CreateBuiltins = false; | |||
5773 | ||||
5774 | // If the declaration we're planning to build will be a function | |||
5775 | // or object with linkage, then look for another declaration with | |||
5776 | // linkage (C99 6.2.2p4-5 and C++ [basic.link]p6). | |||
5777 | // | |||
5778 | // If the declaration we're planning to build will be declared with | |||
5779 | // external linkage in the translation unit, create any builtin with | |||
5780 | // the same name. | |||
5781 | if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) | |||
5782 | /* Do nothing*/; | |||
5783 | else if (CurContext->isFunctionOrMethod() && | |||
5784 | (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_extern || | |||
5785 | R->isFunctionType())) { | |||
5786 | IsLinkageLookup = true; | |||
5787 | CreateBuiltins = | |||
5788 | CurContext->getEnclosingNamespaceContext()->isTranslationUnit(); | |||
5789 | } else if (CurContext->getRedeclContext()->isTranslationUnit() && | |||
5790 | D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_static) | |||
5791 | CreateBuiltins = true; | |||
5792 | ||||
5793 | if (IsLinkageLookup) { | |||
5794 | Previous.clear(LookupRedeclarationWithLinkage); | |||
5795 | Previous.setRedeclarationKind(ForExternalRedeclaration); | |||
5796 | } | |||
5797 | ||||
5798 | LookupName(Previous, S, CreateBuiltins); | |||
5799 | } else { // Something like "int foo::x;" | |||
5800 | LookupQualifiedName(Previous, DC); | |||
5801 | ||||
5802 | // C++ [dcl.meaning]p1: | |||
5803 | // When the declarator-id is qualified, the declaration shall refer to a | |||
5804 | // previously declared member of the class or namespace to which the | |||
5805 | // qualifier refers (or, in the case of a namespace, of an element of the | |||
5806 | // inline namespace set of that namespace (7.3.1)) or to a specialization | |||
5807 | // thereof; [...] | |||
5808 | // | |||
5809 | // Note that we already checked the context above, and that we do not have | |||
5810 | // enough information to make sure that Previous contains the declaration | |||
5811 | // we want to match. For example, given: | |||
5812 | // | |||
5813 | // class X { | |||
5814 | // void f(); | |||
5815 | // void f(float); | |||
5816 | // }; | |||
5817 | // | |||
5818 | // void X::f(int) { } // ill-formed | |||
5819 | // | |||
5820 | // In this case, Previous will point to the overload set | |||
5821 | // containing the two f's declared in X, but neither of them | |||
5822 | // matches. | |||
5823 | ||||
5824 | // C++ [dcl.meaning]p1: | |||
5825 | // [...] the member shall not merely have been introduced by a | |||
5826 | // using-declaration in the scope of the class or namespace nominated by | |||
5827 | // the nested-name-specifier of the declarator-id. | |||
5828 | RemoveUsingDecls(Previous); | |||
5829 | } | |||
5830 | ||||
5831 | if (Previous.isSingleResult() && | |||
5832 | Previous.getFoundDecl()->isTemplateParameter()) { | |||
5833 | // Maybe we will complain about the shadowed template parameter. | |||
5834 | if (!D.isInvalidType()) | |||
5835 | DiagnoseTemplateParameterShadow(D.getIdentifierLoc(), | |||
5836 | Previous.getFoundDecl()); | |||
5837 | ||||
5838 | // Just pretend that we didn't see the previous declaration. | |||
5839 | Previous.clear(); | |||
5840 | } | |||
5841 | ||||
5842 | if (!R->isFunctionType() && DiagnoseClassNameShadow(DC, NameInfo)) | |||
5843 | // Forget that the previous declaration is the injected-class-name. | |||
5844 | Previous.clear(); | |||
5845 | ||||
5846 | // In C++, the previous declaration we find might be a tag type | |||
5847 | // (class or enum). In this case, the new declaration will hide the | |||
5848 | // tag type. Note that this applies to functions, function templates, and | |||
5849 | // variables, but not to typedefs (C++ [dcl.typedef]p4) or variable templates. | |||
5850 | if (Previous.isSingleTagDecl() && | |||
5851 | D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef && | |||
5852 | (TemplateParamLists.size() == 0 || R->isFunctionType())) | |||
5853 | Previous.clear(); | |||
5854 | ||||
5855 | // Check that there are no default arguments other than in the parameters | |||
5856 | // of a function declaration (C++ only). | |||
5857 | if (getLangOpts().CPlusPlus) | |||
5858 | CheckExtraCXXDefaultArguments(D); | |||
5859 | ||||
5860 | NamedDecl *New; | |||
5861 | ||||
5862 | bool AddToScope = true; | |||
5863 | if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) { | |||
5864 | if (TemplateParamLists.size()) { | |||
5865 | Diag(D.getIdentifierLoc(), diag::err_template_typedef); | |||
5866 | return nullptr; | |||
5867 | } | |||
5868 | ||||
5869 | New = ActOnTypedefDeclarator(S, D, DC, TInfo, Previous); | |||
5870 | } else if (R->isFunctionType()) { | |||
5871 | New = ActOnFunctionDeclarator(S, D, DC, TInfo, Previous, | |||
5872 | TemplateParamLists, | |||
5873 | AddToScope); | |||
5874 | } else { | |||
5875 | New = ActOnVariableDeclarator(S, D, DC, TInfo, Previous, TemplateParamLists, | |||
5876 | AddToScope); | |||
5877 | } | |||
5878 | ||||
5879 | if (!New) | |||
5880 | return nullptr; | |||
5881 | ||||
5882 | // If this has an identifier and is not a function template specialization, | |||
5883 | // add it to the scope stack. | |||
5884 | if (New->getDeclName() && AddToScope) | |||
5885 | PushOnScopeChains(New, S); | |||
5886 | ||||
5887 | if (isInOpenMPDeclareTargetContext()) | |||
5888 | checkDeclIsAllowedInOpenMPTarget(nullptr, New); | |||
5889 | ||||
5890 | return New; | |||
5891 | } | |||
5892 | ||||
5893 | /// Helper method to turn variable array types into constant array | |||
5894 | /// types in certain situations which would otherwise be errors (for | |||
5895 | /// GCC compatibility). | |||
5896 | static QualType TryToFixInvalidVariablyModifiedType(QualType T, | |||
5897 | ASTContext &Context, | |||
5898 | bool &SizeIsNegative, | |||
5899 | llvm::APSInt &Oversized) { | |||
5900 | // This method tries to turn a variable array into a constant | |||
5901 | // array even when the size isn't an ICE. This is necessary | |||
5902 | // for compatibility with code that depends on gcc's buggy | |||
5903 | // constant expression folding, like struct {char x[(int)(char*)2];} | |||
5904 | SizeIsNegative = false; | |||
5905 | Oversized = 0; | |||
5906 | ||||
5907 | if (T->isDependentType()) | |||
5908 | return QualType(); | |||
5909 | ||||
5910 | QualifierCollector Qs; | |||
5911 | const Type *Ty = Qs.strip(T); | |||
5912 | ||||
5913 | if (const PointerType* PTy = dyn_cast<PointerType>(Ty)) { | |||
5914 | QualType Pointee = PTy->getPointeeType(); | |||
5915 | QualType FixedType = | |||
5916 | TryToFixInvalidVariablyModifiedType(Pointee, Context, SizeIsNegative, | |||
5917 | Oversized); | |||
5918 | if (FixedType.isNull()) return FixedType; | |||
5919 | FixedType = Context.getPointerType(FixedType); | |||
5920 | return Qs.apply(Context, FixedType); | |||
5921 | } | |||
5922 | if (const ParenType* PTy = dyn_cast<ParenType>(Ty)) { | |||
5923 | QualType Inner = PTy->getInnerType(); | |||
5924 | QualType FixedType = | |||
5925 | TryToFixInvalidVariablyModifiedType(Inner, Context, SizeIsNegative, | |||
5926 | Oversized); | |||
5927 | if (FixedType.isNull()) return FixedType; | |||
5928 | FixedType = Context.getParenType(FixedType); | |||
5929 | return Qs.apply(Context, FixedType); | |||
5930 | } | |||
5931 | ||||
5932 | const VariableArrayType* VLATy = dyn_cast<VariableArrayType>(T); | |||
5933 | if (!VLATy) | |||
5934 | return QualType(); | |||
5935 | ||||
5936 | QualType ElemTy = VLATy->getElementType(); | |||
5937 | if (ElemTy->isVariablyModifiedType()) { | |||
5938 | ElemTy = TryToFixInvalidVariablyModifiedType(ElemTy, Context, | |||
5939 | SizeIsNegative, Oversized); | |||
5940 | if (ElemTy.isNull()) | |||
5941 | return QualType(); | |||
5942 | } | |||
5943 | ||||
5944 | Expr::EvalResult Result; | |||
5945 | if (!VLATy->getSizeExpr() || | |||
5946 | !VLATy->getSizeExpr()->EvaluateAsInt(Result, Context)) | |||
5947 | return QualType(); | |||
5948 | ||||
5949 | llvm::APSInt Res = Result.Val.getInt(); | |||
5950 | ||||
5951 | // Check whether the array size is negative. | |||
5952 | if (Res.isSigned() && Res.isNegative()) { | |||
5953 | SizeIsNegative = true; | |||
5954 | return QualType(); | |||
5955 | } | |||
5956 | ||||
5957 | // Check whether the array is too large to be addressed. | |||
5958 | unsigned ActiveSizeBits = | |||
5959 | (!ElemTy->isDependentType() && !ElemTy->isVariablyModifiedType() && | |||
5960 | !ElemTy->isIncompleteType() && !ElemTy->isUndeducedType()) | |||
5961 | ? ConstantArrayType::getNumAddressingBits(Context, ElemTy, Res) | |||
5962 | : Res.getActiveBits(); | |||
5963 | if (ActiveSizeBits > ConstantArrayType::getMaxSizeBits(Context)) { | |||
5964 | Oversized = Res; | |||
5965 | return QualType(); | |||
5966 | } | |||
5967 | ||||
5968 | return Context.getConstantArrayType(ElemTy, Res, VLATy->getSizeExpr(), | |||
5969 | ArrayType::Normal, 0); | |||
5970 | } | |||
5971 | ||||
5972 | static void | |||
5973 | FixInvalidVariablyModifiedTypeLoc(TypeLoc SrcTL, TypeLoc DstTL) { | |||
5974 | SrcTL = SrcTL.getUnqualifiedLoc(); | |||
5975 | DstTL = DstTL.getUnqualifiedLoc(); | |||
5976 | if (PointerTypeLoc SrcPTL = SrcTL.getAs<PointerTypeLoc>()) { | |||
5977 | PointerTypeLoc DstPTL = DstTL.castAs<PointerTypeLoc>(); | |||
5978 | FixInvalidVariablyModifiedTypeLoc(SrcPTL.getPointeeLoc(), | |||
5979 | DstPTL.getPointeeLoc()); | |||
5980 | DstPTL.setStarLoc(SrcPTL.getStarLoc()); | |||
5981 | return; | |||
5982 | } | |||
5983 | if (ParenTypeLoc SrcPTL = SrcTL.getAs<ParenTypeLoc>()) { | |||
5984 | ParenTypeLoc DstPTL = DstTL.castAs<ParenTypeLoc>(); | |||
5985 | FixInvalidVariablyModifiedTypeLoc(SrcPTL.getInnerLoc(), | |||
5986 | DstPTL.getInnerLoc()); | |||
5987 | DstPTL.setLParenLoc(SrcPTL.getLParenLoc()); | |||
5988 | DstPTL.setRParenLoc(SrcPTL.getRParenLoc()); | |||
5989 | return; | |||
5990 | } | |||
5991 | ArrayTypeLoc SrcATL = SrcTL.castAs<ArrayTypeLoc>(); | |||
5992 | ArrayTypeLoc DstATL = DstTL.castAs<ArrayTypeLoc>(); | |||
5993 | TypeLoc SrcElemTL = SrcATL.getElementLoc(); | |||
5994 | TypeLoc DstElemTL = DstATL.getElementLoc(); | |||
5995 | if (VariableArrayTypeLoc SrcElemATL = | |||
5996 | SrcElemTL.getAs<VariableArrayTypeLoc>()) { | |||
5997 | ConstantArrayTypeLoc DstElemATL = DstElemTL.castAs<ConstantArrayTypeLoc>(); | |||
5998 | FixInvalidVariablyModifiedTypeLoc(SrcElemATL, DstElemATL); | |||
5999 | } else { | |||
6000 | DstElemTL.initializeFullCopy(SrcElemTL); | |||
6001 | } | |||
6002 | DstATL.setLBracketLoc(SrcATL.getLBracketLoc()); | |||
6003 | DstATL.setSizeExpr(SrcATL.getSizeExpr()); | |||
6004 | DstATL.setRBracketLoc(SrcATL.getRBracketLoc()); | |||
6005 | } | |||
6006 | ||||
6007 | /// Helper method to turn variable array types into constant array | |||
6008 | /// types in certain situations which would otherwise be errors (for | |||
6009 | /// GCC compatibility). | |||
6010 | static TypeSourceInfo* | |||
6011 | TryToFixInvalidVariablyModifiedTypeSourceInfo(TypeSourceInfo *TInfo, | |||
6012 | ASTContext &Context, | |||
6013 | bool &SizeIsNegative, | |||
6014 | llvm::APSInt &Oversized) { | |||
6015 | QualType FixedTy | |||
6016 | = TryToFixInvalidVariablyModifiedType(TInfo->getType(), Context, | |||
6017 | SizeIsNegative, Oversized); | |||
6018 | if (FixedTy.isNull()) | |||
6019 | return nullptr; | |||
6020 | TypeSourceInfo *FixedTInfo = Context.getTrivialTypeSourceInfo(FixedTy); | |||
6021 | FixInvalidVariablyModifiedTypeLoc(TInfo->getTypeLoc(), | |||
6022 | FixedTInfo->getTypeLoc()); | |||
6023 | return FixedTInfo; | |||
6024 | } | |||
6025 | ||||
6026 | /// Register the given locally-scoped extern "C" declaration so | |||
6027 | /// that it can be found later for redeclarations. We include any extern "C" | |||
6028 | /// declaration that is not visible in the translation unit here, not just | |||
6029 | /// function-scope declarations. | |||
6030 | void | |||
6031 | Sema::RegisterLocallyScopedExternCDecl(NamedDecl *ND, Scope *S) { | |||
6032 | if (!getLangOpts().CPlusPlus && | |||
6033 | ND->getLexicalDeclContext()->getRedeclContext()->isTranslationUnit()) | |||
6034 | // Don't need to track declarations in the TU in C. | |||
6035 | return; | |||
6036 | ||||
6037 | // Note that we have a locally-scoped external with this name. | |||
6038 | Context.getExternCContextDecl()->makeDeclVisibleInContext(ND); | |||
6039 | } | |||
6040 | ||||
6041 | NamedDecl *Sema::findLocallyScopedExternCDecl(DeclarationName Name) { | |||
6042 | // FIXME: We can have multiple results via __attribute__((overloadable)). | |||
6043 | auto Result = Context.getExternCContextDecl()->lookup(Name); | |||
6044 | return Result.empty() ? nullptr : *Result.begin(); | |||
6045 | } | |||
6046 | ||||
6047 | /// Diagnose function specifiers on a declaration of an identifier that | |||
6048 | /// does not identify a function. | |||
6049 | void Sema::DiagnoseFunctionSpecifiers(const DeclSpec &DS) { | |||
6050 | // FIXME: We should probably indicate the identifier in question to avoid | |||
6051 | // confusion for constructs like "virtual int a(), b;" | |||
6052 | if (DS.isVirtualSpecified()) | |||
6053 | Diag(DS.getVirtualSpecLoc(), | |||
6054 | diag::err_virtual_non_function); | |||
6055 | ||||
6056 | if (DS.hasExplicitSpecifier()) | |||
6057 | Diag(DS.getExplicitSpecLoc(), | |||
6058 | diag::err_explicit_non_function); | |||
6059 | ||||
6060 | if (DS.isNoreturnSpecified()) | |||
6061 | Diag(DS.getNoreturnSpecLoc(), | |||
6062 | diag::err_noreturn_non_function); | |||
6063 | } | |||
6064 | ||||
6065 | NamedDecl* | |||
6066 | Sema::ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC, | |||
6067 | TypeSourceInfo *TInfo, LookupResult &Previous) { | |||
6068 | // Typedef declarators cannot be qualified (C++ [dcl.meaning]p1). | |||
6069 | if (D.getCXXScopeSpec().isSet()) { | |||
6070 | Diag(D.getIdentifierLoc(), diag::err_qualified_typedef_declarator) | |||
6071 | << D.getCXXScopeSpec().getRange(); | |||
6072 | D.setInvalidType(); | |||
6073 | // Pretend we didn't see the scope specifier. | |||
6074 | DC = CurContext; | |||
6075 | Previous.clear(); | |||
6076 | } | |||
6077 | ||||
6078 | DiagnoseFunctionSpecifiers(D.getDeclSpec()); | |||
6079 | ||||
6080 | if (D.getDeclSpec().isInlineSpecified()) | |||
6081 | Diag(D.getDeclSpec().getInlineSpecLoc(), diag::err_inline_non_function) | |||
6082 | << getLangOpts().CPlusPlus17; | |||
6083 | if (D.getDeclSpec().hasConstexprSpecifier()) | |||
6084 | Diag(D.getDeclSpec().getConstexprSpecLoc(), diag::err_invalid_constexpr) | |||
6085 | << 1 << static_cast<int>(D.getDeclSpec().getConstexprSpecifier()); | |||
6086 | ||||
6087 | if (D.getName().Kind != UnqualifiedIdKind::IK_Identifier) { | |||
6088 | if (D.getName().Kind == UnqualifiedIdKind::IK_DeductionGuideName) | |||
6089 | Diag(D.getName().StartLocation, | |||
6090 | diag::err_deduction_guide_invalid_specifier) | |||
6091 | << "typedef"; | |||
6092 | else | |||
6093 | Diag(D.getName().StartLocation, diag::err_typedef_not_identifier) | |||
6094 | << D.getName().getSourceRange(); | |||
6095 | return nullptr; | |||
6096 | } | |||
6097 | ||||
6098 | TypedefDecl *NewTD = ParseTypedefDecl(S, D, TInfo->getType(), TInfo); | |||
6099 | if (!NewTD) return nullptr; | |||
6100 | ||||
6101 | // Handle attributes prior to checking for duplicates in MergeVarDecl | |||
6102 | ProcessDeclAttributes(S, NewTD, D); | |||
6103 | ||||
6104 | CheckTypedefForVariablyModifiedType(S, NewTD); | |||
6105 | ||||
6106 | bool Redeclaration = D.isRedeclaration(); | |||
6107 | NamedDecl *ND = ActOnTypedefNameDecl(S, DC, NewTD, Previous, Redeclaration); | |||
6108 | D.setRedeclaration(Redeclaration); | |||
6109 | return ND; | |||
6110 | } | |||
6111 | ||||
6112 | void | |||
6113 | Sema::CheckTypedefForVariablyModifiedType(Scope *S, TypedefNameDecl *NewTD) { | |||
6114 | // C99 6.7.7p2: If a typedef name specifies a variably modified type | |||
6115 | // then it shall have block scope. | |||
6116 | // Note that variably modified types must be fixed before merging the decl so | |||
6117 | // that redeclarations will match. | |||
6118 | TypeSourceInfo *TInfo = NewTD->getTypeSourceInfo(); | |||
6119 | QualType T = TInfo->getType(); | |||
6120 | if (T->isVariablyModifiedType()) { | |||
6121 | setFunctionHasBranchProtectedScope(); | |||
6122 | ||||
6123 | if (S->getFnParent() == nullptr) { | |||
6124 | bool SizeIsNegative; | |||
6125 | llvm::APSInt Oversized; | |||
6126 | TypeSourceInfo *FixedTInfo = | |||
6127 | TryToFixInvalidVariablyModifiedTypeSourceInfo(TInfo, Context, | |||
6128 | SizeIsNegative, | |||
6129 | Oversized); | |||
6130 | if (FixedTInfo) { | |||
6131 | Diag(NewTD->getLocation(), diag::ext_vla_folded_to_constant); | |||
6132 | NewTD->setTypeSourceInfo(FixedTInfo); | |||
6133 | } else { | |||
6134 | if (SizeIsNegative) | |||
6135 | Diag(NewTD->getLocation(), diag::err_typecheck_negative_array_size); | |||
6136 | else if (T->isVariableArrayType()) | |||
6137 | Diag(NewTD->getLocation(), diag::err_vla_decl_in_file_scope); | |||
6138 | else if (Oversized.getBoolValue()) | |||
6139 | Diag(NewTD->getLocation(), diag::err_array_too_large) | |||
6140 | << Oversized.toString(10); | |||
6141 | else | |||
6142 | Diag(NewTD->getLocation(), diag::err_vm_decl_in_file_scope); | |||
6143 | NewTD->setInvalidDecl(); | |||
6144 | } | |||
6145 | } | |||
6146 | } | |||
6147 | } | |||
6148 | ||||
6149 | /// ActOnTypedefNameDecl - Perform semantic checking for a declaration which | |||
6150 | /// declares a typedef-name, either using the 'typedef' type specifier or via | |||
6151 | /// a C++0x [dcl.typedef]p2 alias-declaration: 'using T = A;'. | |||
6152 | NamedDecl* | |||
6153 | Sema::ActOnTypedefNameDecl(Scope *S, DeclContext *DC, TypedefNameDecl *NewTD, | |||
6154 | LookupResult &Previous, bool &Redeclaration) { | |||
6155 | ||||
6156 | // Find the shadowed declaration before filtering for scope. | |||
6157 | NamedDecl *ShadowedDecl = getShadowedDeclaration(NewTD, Previous); | |||
6158 | ||||
6159 | // Merge the decl with the existing one if appropriate. If the decl is | |||
6160 | // in an outer scope, it isn't the same thing. | |||
6161 | FilterLookupForScope(Previous, DC, S, /*ConsiderLinkage*/false, | |||
6162 | /*AllowInlineNamespace*/false); | |||
6163 | filterNonConflictingPreviousTypedefDecls(*this, NewTD, Previous); | |||
6164 | if (!Previous.empty()) { | |||
6165 | Redeclaration = true; | |||
6166 | MergeTypedefNameDecl(S, NewTD, Previous); | |||
6167 | } else { | |||
6168 | inferGslPointerAttribute(NewTD); | |||
6169 | } | |||
6170 | ||||
6171 | if (ShadowedDecl && !Redeclaration) | |||
6172 | CheckShadow(NewTD, ShadowedDecl, Previous); | |||
6173 | ||||
6174 | // If this is the C FILE type, notify the AST context. | |||
6175 | if (IdentifierInfo *II = NewTD->getIdentifier()) | |||
6176 | if (!NewTD->isInvalidDecl() && | |||
6177 | NewTD->getDeclContext()->getRedeclContext()->isTranslationUnit()) { | |||
6178 | if (II->isStr("FILE")) | |||
6179 | Context.setFILEDecl(NewTD); | |||
6180 | else if (II->isStr("jmp_buf")) | |||
6181 | Context.setjmp_bufDecl(NewTD); | |||
6182 | else if (II->isStr("sigjmp_buf")) | |||
6183 | Context.setsigjmp_bufDecl(NewTD); | |||
6184 | else if (II->isStr("ucontext_t")) | |||
6185 | Context.setucontext_tDecl(NewTD); | |||
6186 | } | |||
6187 | ||||
6188 | return NewTD; | |||
6189 | } | |||
6190 | ||||
6191 | /// Determines whether the given declaration is an out-of-scope | |||
6192 | /// previous declaration. | |||
6193 | /// | |||
6194 | /// This routine should be invoked when name lookup has found a | |||
6195 | /// previous declaration (PrevDecl) that is not in the scope where a | |||
6196 | /// new declaration by the same name is being introduced. If the new | |||
6197 | /// declaration occurs in a local scope, previous declarations with | |||
6198 | /// linkage may still be considered previous declarations (C99 | |||
6199 | /// 6.2.2p4-5, C++ [basic.link]p6). | |||
6200 | /// | |||
6201 | /// \param PrevDecl the previous declaration found by name | |||
6202 | /// lookup | |||
6203 | /// | |||
6204 | /// \param DC the context in which the new declaration is being | |||
6205 | /// declared. | |||
6206 | /// | |||
6207 | /// \returns true if PrevDecl is an out-of-scope previous declaration | |||
6208 | /// for a new delcaration with the same name. | |||
6209 | static bool | |||
6210 | isOutOfScopePreviousDeclaration(NamedDecl *PrevDecl, DeclContext *DC, | |||
6211 | ASTContext &Context) { | |||
6212 | if (!PrevDecl) | |||
6213 | return false; | |||
6214 | ||||
6215 | if (!PrevDecl->hasLinkage()) | |||
6216 | return false; | |||
6217 | ||||
6218 | if (Context.getLangOpts().CPlusPlus) { | |||
6219 | // C++ [basic.link]p6: | |||
6220 | // If there is a visible declaration of an entity with linkage | |||
6221 | // having the same name and type, ignoring entities declared | |||
6222 | // outside the innermost enclosing namespace scope, the block | |||
6223 | // scope declaration declares that same entity and receives the | |||
6224 | // linkage of the previous declaration. | |||
6225 | DeclContext *OuterContext = DC->getRedeclContext(); | |||
6226 | if (!OuterContext->isFunctionOrMethod()) | |||
6227 | // This rule only applies to block-scope declarations. | |||
6228 | return false; | |||
6229 | ||||
6230 | DeclContext *PrevOuterContext = PrevDecl->getDeclContext(); | |||
6231 | if (PrevOuterContext->isRecord()) | |||
6232 | // We found a member function: ignore it. | |||
6233 | return false; | |||
6234 | ||||
6235 | // Find the innermost enclosing namespace for the new and | |||
6236 | // previous declarations. | |||
6237 | OuterContext = OuterContext->getEnclosingNamespaceContext(); | |||
6238 | PrevOuterContext = PrevOuterContext->getEnclosingNamespaceContext(); | |||
6239 | ||||
6240 | // The previous declaration is in a different namespace, so it | |||
6241 | // isn't the same function. | |||
6242 | if (!OuterContext->Equals(PrevOuterContext)) | |||
6243 | return false; | |||
6244 | } | |||
6245 | ||||
6246 | return true; | |||
6247 | } | |||
6248 | ||||
6249 | static void SetNestedNameSpecifier(Sema &S, DeclaratorDecl *DD, Declarator &D) { | |||
6250 | CXXScopeSpec &SS = D.getCXXScopeSpec(); | |||
6251 | if (!SS.isSet()) return; | |||
6252 | DD->setQualifierInfo(SS.getWithLocInContext(S.Context)); | |||
6253 | } | |||
6254 | ||||
6255 | bool Sema::inferObjCARCLifetime(ValueDecl *decl) { | |||
6256 | QualType type = decl->getType(); | |||
6257 | Qualifiers::ObjCLifetime lifetime = type.getObjCLifetime(); | |||
6258 | if (lifetime == Qualifiers::OCL_Autoreleasing) { | |||
6259 | // Various kinds of declaration aren't allowed to be __autoreleasing. | |||
6260 | unsigned kind = -1U; | |||
6261 | if (VarDecl *var = dyn_cast<VarDecl>(decl)) { | |||
6262 | if (var->hasAttr<BlocksAttr>()) | |||
6263 | kind = 0; // __block | |||
6264 | else if (!var->hasLocalStorage()) | |||
6265 | kind = 1; // global | |||
6266 | } else if (isa<ObjCIvarDecl>(decl)) { | |||
6267 | kind = 3; // ivar | |||
6268 | } else if (isa<FieldDecl>(decl)) { | |||
6269 | kind = 2; // field | |||
6270 | } | |||
6271 | ||||
6272 | if (kind != -1U) { | |||
6273 | Diag(decl->getLocation(), diag::err_arc_autoreleasing_var) | |||
6274 | << kind; | |||
6275 | } | |||
6276 | } else if (lifetime == Qualifiers::OCL_None) { | |||
6277 | // Try to infer lifetime. | |||
6278 | if (!type->isObjCLifetimeType()) | |||
6279 | return false; | |||
6280 | ||||
6281 | lifetime = type->getObjCARCImplicitLifetime(); | |||
6282 | type = Context.getLifetimeQualifiedType(type, lifetime); | |||
6283 | decl->setType(type); | |||
6284 | } | |||
6285 | ||||
6286 | if (VarDecl *var = dyn_cast<VarDecl>(decl)) { | |||
6287 | // Thread-local variables cannot have lifetime. | |||
6288 | if (lifetime && lifetime != Qualifiers::OCL_ExplicitNone && | |||
6289 | var->getTLSKind()) { | |||
6290 | Diag(var->getLocation(), diag::err_arc_thread_ownership) | |||
6291 | << var->getType(); | |||
6292 | return true; | |||
6293 | } | |||
6294 | } | |||
6295 | ||||
6296 | return false; | |||
6297 | } | |||
6298 | ||||
6299 | void Sema::deduceOpenCLAddressSpace(ValueDecl *Decl) { | |||
6300 | if (Decl->getType().hasAddressSpace()) | |||
6301 | return; | |||
6302 | if (Decl->getType()->isDependentType()) | |||
6303 | return; | |||
6304 | if (VarDecl *Var = dyn_cast<VarDecl>(Decl)) { | |||
6305 | QualType Type = Var->getType(); | |||
6306 | if (Type->isSamplerT() || Type->isVoidType()) | |||
6307 | return; | |||
6308 | LangAS ImplAS = LangAS::opencl_private; | |||
6309 | if ((getLangOpts().OpenCLCPlusPlus || getLangOpts().OpenCLVersion >= 200) && | |||
6310 | Var->hasGlobalStorage()) | |||
6311 | ImplAS = LangAS::opencl_global; | |||
6312 | // If the original type from a decayed type is an array type and that array | |||
6313 | // type has no address space yet, deduce it now. | |||
6314 | if (auto DT = dyn_cast<DecayedType>(Type)) { | |||
6315 | auto OrigTy = DT->getOriginalType(); | |||
6316 | if (!OrigTy.hasAddressSpace() && OrigTy->isArrayType()) { | |||
6317 | // Add the address space to the original array type and then propagate | |||
6318 | // that to the element type through `getAsArrayType`. | |||
6319 | OrigTy = Context.getAddrSpaceQualType(OrigTy, ImplAS); | |||
6320 | OrigTy = QualType(Context.getAsArrayType(OrigTy), 0); | |||
6321 | // Re-generate the decayed type. | |||
6322 | Type = Context.getDecayedType(OrigTy); | |||
6323 | } | |||
6324 | } | |||
6325 | Type = Context.getAddrSpaceQualType(Type, ImplAS); | |||
6326 | // Apply any qualifiers (including address space) from the array type to | |||
6327 | // the element type. This implements C99 6.7.3p8: "If the specification of | |||
6328 | // an array type includes any type qualifiers, the element type is so | |||
6329 | // qualified, not the array type." | |||
6330 | if (Type->isArrayType()) | |||
6331 | Type = QualType(Context.getAsArrayType(Type), 0); | |||
6332 | Decl->setType(Type); | |||
6333 | } | |||
6334 | } | |||
6335 | ||||
6336 | static void checkAttributesAfterMerging(Sema &S, NamedDecl &ND) { | |||
6337 | // Ensure that an auto decl is deduced otherwise the checks below might cache | |||
6338 | // the wrong linkage. | |||
6339 | assert(S.ParsingInitForAutoVars.count(&ND) == 0)((S.ParsingInitForAutoVars.count(&ND) == 0) ? static_cast <void> (0) : __assert_fail ("S.ParsingInitForAutoVars.count(&ND) == 0" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6339, __PRETTY_FUNCTION__)); | |||
6340 | ||||
6341 | // 'weak' only applies to declarations with external linkage. | |||
6342 | if (WeakAttr *Attr = ND.getAttr<WeakAttr>()) { | |||
6343 | if (!ND.isExternallyVisible()) { | |||
6344 | S.Diag(Attr->getLocation(), diag::err_attribute_weak_static); | |||
6345 | ND.dropAttr<WeakAttr>(); | |||
6346 | } | |||
6347 | } | |||
6348 | if (WeakRefAttr *Attr = ND.getAttr<WeakRefAttr>()) { | |||
6349 | if (ND.isExternallyVisible()) { | |||
6350 | S.Diag(Attr->getLocation(), diag::err_attribute_weakref_not_static); | |||
6351 | ND.dropAttr<WeakRefAttr>(); | |||
6352 | ND.dropAttr<AliasAttr>(); | |||
6353 | } | |||
6354 | } | |||
6355 | ||||
6356 | if (auto *VD = dyn_cast<VarDecl>(&ND)) { | |||
6357 | if (VD->hasInit()) { | |||
6358 | if (const auto *Attr = VD->getAttr<AliasAttr>()) { | |||
6359 | assert(VD->isThisDeclarationADefinition() &&((VD->isThisDeclarationADefinition() && !VD->isExternallyVisible () && "Broken AliasAttr handled late!") ? static_cast <void> (0) : __assert_fail ("VD->isThisDeclarationADefinition() && !VD->isExternallyVisible() && \"Broken AliasAttr handled late!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6360, __PRETTY_FUNCTION__)) | |||
6360 | !VD->isExternallyVisible() && "Broken AliasAttr handled late!")((VD->isThisDeclarationADefinition() && !VD->isExternallyVisible () && "Broken AliasAttr handled late!") ? static_cast <void> (0) : __assert_fail ("VD->isThisDeclarationADefinition() && !VD->isExternallyVisible() && \"Broken AliasAttr handled late!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6360, __PRETTY_FUNCTION__)); | |||
6361 | S.Diag(Attr->getLocation(), diag::err_alias_is_definition) << VD << 0; | |||
6362 | VD->dropAttr<AliasAttr>(); | |||
6363 | } | |||
6364 | } | |||
6365 | } | |||
6366 | ||||
6367 | // 'selectany' only applies to externally visible variable declarations. | |||
6368 | // It does not apply to functions. | |||
6369 | if (SelectAnyAttr *Attr = ND.getAttr<SelectAnyAttr>()) { | |||
6370 | if (isa<FunctionDecl>(ND) || !ND.isExternallyVisible()) { | |||
6371 | S.Diag(Attr->getLocation(), | |||
6372 | diag::err_attribute_selectany_non_extern_data); | |||
6373 | ND.dropAttr<SelectAnyAttr>(); | |||
6374 | } | |||
6375 | } | |||
6376 | ||||
6377 | if (const InheritableAttr *Attr = getDLLAttr(&ND)) { | |||
6378 | auto *VD = dyn_cast<VarDecl>(&ND); | |||
6379 | bool IsAnonymousNS = false; | |||
6380 | bool IsMicrosoft = S.Context.getTargetInfo().getCXXABI().isMicrosoft(); | |||
6381 | if (VD) { | |||
6382 | const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(VD->getDeclContext()); | |||
6383 | while (NS && !IsAnonymousNS) { | |||
6384 | IsAnonymousNS = NS->isAnonymousNamespace(); | |||
6385 | NS = dyn_cast<NamespaceDecl>(NS->getParent()); | |||
6386 | } | |||
6387 | } | |||
6388 | // dll attributes require external linkage. Static locals may have external | |||
6389 | // linkage but still cannot be explicitly imported or exported. | |||
6390 | // In Microsoft mode, a variable defined in anonymous namespace must have | |||
6391 | // external linkage in order to be exported. | |||
6392 | bool AnonNSInMicrosoftMode = IsAnonymousNS && IsMicrosoft; | |||
6393 | if ((ND.isExternallyVisible() && AnonNSInMicrosoftMode) || | |||
6394 | (!AnonNSInMicrosoftMode && | |||
6395 | (!ND.isExternallyVisible() || (VD && VD->isStaticLocal())))) { | |||
6396 | S.Diag(ND.getLocation(), diag::err_attribute_dll_not_extern) | |||
6397 | << &ND << Attr; | |||
6398 | ND.setInvalidDecl(); | |||
6399 | } | |||
6400 | } | |||
6401 | ||||
6402 | // Virtual functions cannot be marked as 'notail'. | |||
6403 | if (auto *Attr = ND.getAttr<NotTailCalledAttr>()) | |||
6404 | if (auto *MD = dyn_cast<CXXMethodDecl>(&ND)) | |||
6405 | if (MD->isVirtual()) { | |||
6406 | S.Diag(ND.getLocation(), | |||
6407 | diag::err_invalid_attribute_on_virtual_function) | |||
6408 | << Attr; | |||
6409 | ND.dropAttr<NotTailCalledAttr>(); | |||
6410 | } | |||
6411 | ||||
6412 | // Check the attributes on the function type, if any. | |||
6413 | if (const auto *FD = dyn_cast<FunctionDecl>(&ND)) { | |||
6414 | // Don't declare this variable in the second operand of the for-statement; | |||
6415 | // GCC miscompiles that by ending its lifetime before evaluating the | |||
6416 | // third operand. See gcc.gnu.org/PR86769. | |||
6417 | AttributedTypeLoc ATL; | |||
6418 | for (TypeLoc TL = FD->getTypeSourceInfo()->getTypeLoc(); | |||
6419 | (ATL = TL.getAsAdjusted<AttributedTypeLoc>()); | |||
6420 | TL = ATL.getModifiedLoc()) { | |||
6421 | // The [[lifetimebound]] attribute can be applied to the implicit object | |||
6422 | // parameter of a non-static member function (other than a ctor or dtor) | |||
6423 | // by applying it to the function type. | |||
6424 | if (const auto *A = ATL.getAttrAs<LifetimeBoundAttr>()) { | |||
6425 | const auto *MD = dyn_cast<CXXMethodDecl>(FD); | |||
6426 | if (!MD || MD->isStatic()) { | |||
6427 | S.Diag(A->getLocation(), diag::err_lifetimebound_no_object_param) | |||
6428 | << !MD << A->getRange(); | |||
6429 | } else if (isa<CXXConstructorDecl>(MD) || isa<CXXDestructorDecl>(MD)) { | |||
6430 | S.Diag(A->getLocation(), diag::err_lifetimebound_ctor_dtor) | |||
6431 | << isa<CXXDestructorDecl>(MD) << A->getRange(); | |||
6432 | } | |||
6433 | } | |||
6434 | } | |||
6435 | } | |||
6436 | } | |||
6437 | ||||
6438 | static void checkDLLAttributeRedeclaration(Sema &S, NamedDecl *OldDecl, | |||
6439 | NamedDecl *NewDecl, | |||
6440 | bool IsSpecialization, | |||
6441 | bool IsDefinition) { | |||
6442 | if (OldDecl->isInvalidDecl() || NewDecl->isInvalidDecl()) | |||
6443 | return; | |||
6444 | ||||
6445 | bool IsTemplate = false; | |||
6446 | if (TemplateDecl *OldTD = dyn_cast<TemplateDecl>(OldDecl)) { | |||
6447 | OldDecl = OldTD->getTemplatedDecl(); | |||
6448 | IsTemplate = true; | |||
6449 | if (!IsSpecialization) | |||
6450 | IsDefinition = false; | |||
6451 | } | |||
6452 | if (TemplateDecl *NewTD = dyn_cast<TemplateDecl>(NewDecl)) { | |||
6453 | NewDecl = NewTD->getTemplatedDecl(); | |||
6454 | IsTemplate = true; | |||
6455 | } | |||
6456 | ||||
6457 | if (!OldDecl || !NewDecl) | |||
6458 | return; | |||
6459 | ||||
6460 | const DLLImportAttr *OldImportAttr = OldDecl->getAttr<DLLImportAttr>(); | |||
6461 | const DLLExportAttr *OldExportAttr = OldDecl->getAttr<DLLExportAttr>(); | |||
6462 | const DLLImportAttr *NewImportAttr = NewDecl->getAttr<DLLImportAttr>(); | |||
6463 | const DLLExportAttr *NewExportAttr = NewDecl->getAttr<DLLExportAttr>(); | |||
6464 | ||||
6465 | // dllimport and dllexport are inheritable attributes so we have to exclude | |||
6466 | // inherited attribute instances. | |||
6467 | bool HasNewAttr = (NewImportAttr && !NewImportAttr->isInherited()) || | |||
6468 | (NewExportAttr && !NewExportAttr->isInherited()); | |||
6469 | ||||
6470 | // A redeclaration is not allowed to add a dllimport or dllexport attribute, | |||
6471 | // the only exception being explicit specializations. | |||
6472 | // Implicitly generated declarations are also excluded for now because there | |||
6473 | // is no other way to switch these to use dllimport or dllexport. | |||
6474 | bool AddsAttr = !(OldImportAttr || OldExportAttr) && HasNewAttr; | |||
6475 | ||||
6476 | if (AddsAttr && !IsSpecialization && !OldDecl->isImplicit()) { | |||
6477 | // Allow with a warning for free functions and global variables. | |||
6478 | bool JustWarn = false; | |||
6479 | if (!OldDecl->isCXXClassMember()) { | |||
6480 | auto *VD = dyn_cast<VarDecl>(OldDecl); | |||
6481 | if (VD && !VD->getDescribedVarTemplate()) | |||
6482 | JustWarn = true; | |||
6483 | auto *FD = dyn_cast<FunctionDecl>(OldDecl); | |||
6484 | if (FD && FD->getTemplatedKind() == FunctionDecl::TK_NonTemplate) | |||
6485 | JustWarn = true; | |||
6486 | } | |||
6487 | ||||
6488 | // We cannot change a declaration that's been used because IR has already | |||
6489 | // been emitted. Dllimported functions will still work though (modulo | |||
6490 | // address equality) as they can use the thunk. | |||
6491 | if (OldDecl->isUsed()) | |||
6492 | if (!isa<FunctionDecl>(OldDecl) || !NewImportAttr) | |||
6493 | JustWarn = false; | |||
6494 | ||||
6495 | unsigned DiagID = JustWarn ? diag::warn_attribute_dll_redeclaration | |||
6496 | : diag::err_attribute_dll_redeclaration; | |||
6497 | S.Diag(NewDecl->getLocation(), DiagID) | |||
6498 | << NewDecl | |||
6499 | << (NewImportAttr ? (const Attr *)NewImportAttr : NewExportAttr); | |||
6500 | S.Diag(OldDecl->getLocation(), diag::note_previous_declaration); | |||
6501 | if (!JustWarn) { | |||
6502 | NewDecl->setInvalidDecl(); | |||
6503 | return; | |||
6504 | } | |||
6505 | } | |||
6506 | ||||
6507 | // A redeclaration is not allowed to drop a dllimport attribute, the only | |||
6508 | // exceptions being inline function definitions (except for function | |||
6509 | // templates), local extern declarations, qualified friend declarations or | |||
6510 | // special MSVC extension: in the last case, the declaration is treated as if | |||
6511 | // it were marked dllexport. | |||
6512 | bool IsInline = false, IsStaticDataMember = false, IsQualifiedFriend = false; | |||
6513 | bool IsMicrosoftABI = S.Context.getTargetInfo().shouldDLLImportComdatSymbols(); | |||
6514 | if (const auto *VD = dyn_cast<VarDecl>(NewDecl)) { | |||
6515 | // Ignore static data because out-of-line definitions are diagnosed | |||
6516 | // separately. | |||
6517 | IsStaticDataMember = VD->isStaticDataMember(); | |||
6518 | IsDefinition = VD->isThisDeclarationADefinition(S.Context) != | |||
6519 | VarDecl::DeclarationOnly; | |||
6520 | } else if (const auto *FD = dyn_cast<FunctionDecl>(NewDecl)) { | |||
6521 | IsInline = FD->isInlined(); | |||
6522 | IsQualifiedFriend = FD->getQualifier() && | |||
6523 | FD->getFriendObjectKind() == Decl::FOK_Declared; | |||
6524 | } | |||
6525 | ||||
6526 | if (OldImportAttr && !HasNewAttr && | |||
6527 | (!IsInline || (IsMicrosoftABI && IsTemplate)) && !IsStaticDataMember && | |||
6528 | !NewDecl->isLocalExternDecl() && !IsQualifiedFriend) { | |||
6529 | if (IsMicrosoftABI && IsDefinition) { | |||
6530 | S.Diag(NewDecl->getLocation(), | |||
6531 | diag::warn_redeclaration_without_import_attribute) | |||
6532 | << NewDecl; | |||
6533 | S.Diag(OldDecl->getLocation(), diag::note_previous_declaration); | |||
6534 | NewDecl->dropAttr<DLLImportAttr>(); | |||
6535 | NewDecl->addAttr( | |||
6536 | DLLExportAttr::CreateImplicit(S.Context, NewImportAttr->getRange())); | |||
6537 | } else { | |||
6538 | S.Diag(NewDecl->getLocation(), | |||
6539 | diag::warn_redeclaration_without_attribute_prev_attribute_ignored) | |||
6540 | << NewDecl << OldImportAttr; | |||
6541 | S.Diag(OldDecl->getLocation(), diag::note_previous_declaration); | |||
6542 | S.Diag(OldImportAttr->getLocation(), diag::note_previous_attribute); | |||
6543 | OldDecl->dropAttr<DLLImportAttr>(); | |||
6544 | NewDecl->dropAttr<DLLImportAttr>(); | |||
6545 | } | |||
6546 | } else if (IsInline && OldImportAttr && !IsMicrosoftABI) { | |||
6547 | // In MinGW, seeing a function declared inline drops the dllimport | |||
6548 | // attribute. | |||
6549 | OldDecl->dropAttr<DLLImportAttr>(); | |||
6550 | NewDecl->dropAttr<DLLImportAttr>(); | |||
6551 | S.Diag(NewDecl->getLocation(), | |||
6552 | diag::warn_dllimport_dropped_from_inline_function) | |||
6553 | << NewDecl << OldImportAttr; | |||
6554 | } | |||
6555 | ||||
6556 | // A specialization of a class template member function is processed here | |||
6557 | // since it's a redeclaration. If the parent class is dllexport, the | |||
6558 | // specialization inherits that attribute. This doesn't happen automatically | |||
6559 | // since the parent class isn't instantiated until later. | |||
6560 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(NewDecl)) { | |||
6561 | if (MD->getTemplatedKind() == FunctionDecl::TK_MemberSpecialization && | |||
6562 | !NewImportAttr && !NewExportAttr) { | |||
6563 | if (const DLLExportAttr *ParentExportAttr = | |||
6564 | MD->getParent()->getAttr<DLLExportAttr>()) { | |||
6565 | DLLExportAttr *NewAttr = ParentExportAttr->clone(S.Context); | |||
6566 | NewAttr->setInherited(true); | |||
6567 | NewDecl->addAttr(NewAttr); | |||
6568 | } | |||
6569 | } | |||
6570 | } | |||
6571 | } | |||
6572 | ||||
6573 | /// Given that we are within the definition of the given function, | |||
6574 | /// will that definition behave like C99's 'inline', where the | |||
6575 | /// definition is discarded except for optimization purposes? | |||
6576 | static bool isFunctionDefinitionDiscarded(Sema &S, FunctionDecl *FD) { | |||
6577 | // Try to avoid calling GetGVALinkageForFunction. | |||
6578 | ||||
6579 | // All cases of this require the 'inline' keyword. | |||
6580 | if (!FD->isInlined()) return false; | |||
6581 | ||||
6582 | // This is only possible in C++ with the gnu_inline attribute. | |||
6583 | if (S.getLangOpts().CPlusPlus && !FD->hasAttr<GNUInlineAttr>()) | |||
6584 | return false; | |||
6585 | ||||
6586 | // Okay, go ahead and call the relatively-more-expensive function. | |||
6587 | return S.Context.GetGVALinkageForFunction(FD) == GVA_AvailableExternally; | |||
6588 | } | |||
6589 | ||||
6590 | /// Determine whether a variable is extern "C" prior to attaching | |||
6591 | /// an initializer. We can't just call isExternC() here, because that | |||
6592 | /// will also compute and cache whether the declaration is externally | |||
6593 | /// visible, which might change when we attach the initializer. | |||
6594 | /// | |||
6595 | /// This can only be used if the declaration is known to not be a | |||
6596 | /// redeclaration of an internal linkage declaration. | |||
6597 | /// | |||
6598 | /// For instance: | |||
6599 | /// | |||
6600 | /// auto x = []{}; | |||
6601 | /// | |||
6602 | /// Attaching the initializer here makes this declaration not externally | |||
6603 | /// visible, because its type has internal linkage. | |||
6604 | /// | |||
6605 | /// FIXME: This is a hack. | |||
6606 | template<typename T> | |||
6607 | static bool isIncompleteDeclExternC(Sema &S, const T *D) { | |||
6608 | if (S.getLangOpts().CPlusPlus) { | |||
6609 | // In C++, the overloadable attribute negates the effects of extern "C". | |||
6610 | if (!D->isInExternCContext() || D->template hasAttr<OverloadableAttr>()) | |||
6611 | return false; | |||
6612 | ||||
6613 | // So do CUDA's host/device attributes. | |||
6614 | if (S.getLangOpts().CUDA && (D->template hasAttr<CUDADeviceAttr>() || | |||
6615 | D->template hasAttr<CUDAHostAttr>())) | |||
6616 | return false; | |||
6617 | } | |||
6618 | return D->isExternC(); | |||
6619 | } | |||
6620 | ||||
6621 | static bool shouldConsiderLinkage(const VarDecl *VD) { | |||
6622 | const DeclContext *DC = VD->getDeclContext()->getRedeclContext(); | |||
6623 | if (DC->isFunctionOrMethod() || isa<OMPDeclareReductionDecl>(DC) || | |||
6624 | isa<OMPDeclareMapperDecl>(DC)) | |||
6625 | return VD->hasExternalStorage(); | |||
6626 | if (DC->isFileContext()) | |||
6627 | return true; | |||
6628 | if (DC->isRecord()) | |||
6629 | return false; | |||
6630 | if (isa<RequiresExprBodyDecl>(DC)) | |||
6631 | return false; | |||
6632 | llvm_unreachable("Unexpected context")::llvm::llvm_unreachable_internal("Unexpected context", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6632); | |||
6633 | } | |||
6634 | ||||
6635 | static bool shouldConsiderLinkage(const FunctionDecl *FD) { | |||
6636 | const DeclContext *DC = FD->getDeclContext()->getRedeclContext(); | |||
6637 | if (DC->isFileContext() || DC->isFunctionOrMethod() || | |||
6638 | isa<OMPDeclareReductionDecl>(DC) || isa<OMPDeclareMapperDecl>(DC)) | |||
6639 | return true; | |||
6640 | if (DC->isRecord()) | |||
6641 | return false; | |||
6642 | llvm_unreachable("Unexpected context")::llvm::llvm_unreachable_internal("Unexpected context", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6642); | |||
6643 | } | |||
6644 | ||||
6645 | static bool hasParsedAttr(Scope *S, const Declarator &PD, | |||
6646 | ParsedAttr::Kind Kind) { | |||
6647 | // Check decl attributes on the DeclSpec. | |||
6648 | if (PD.getDeclSpec().getAttributes().hasAttribute(Kind)) | |||
6649 | return true; | |||
6650 | ||||
6651 | // Walk the declarator structure, checking decl attributes that were in a type | |||
6652 | // position to the decl itself. | |||
6653 | for (unsigned I = 0, E = PD.getNumTypeObjects(); I != E; ++I) { | |||
6654 | if (PD.getTypeObject(I).getAttrs().hasAttribute(Kind)) | |||
6655 | return true; | |||
6656 | } | |||
6657 | ||||
6658 | // Finally, check attributes on the decl itself. | |||
6659 | return PD.getAttributes().hasAttribute(Kind); | |||
6660 | } | |||
6661 | ||||
6662 | /// Adjust the \c DeclContext for a function or variable that might be a | |||
6663 | /// function-local external declaration. | |||
6664 | bool Sema::adjustContextForLocalExternDecl(DeclContext *&DC) { | |||
6665 | if (!DC->isFunctionOrMethod()) | |||
6666 | return false; | |||
6667 | ||||
6668 | // If this is a local extern function or variable declared within a function | |||
6669 | // template, don't add it into the enclosing namespace scope until it is | |||
6670 | // instantiated; it might have a dependent type right now. | |||
6671 | if (DC->isDependentContext()) | |||
6672 | return true; | |||
6673 | ||||
6674 | // C++11 [basic.link]p7: | |||
6675 | // When a block scope declaration of an entity with linkage is not found to | |||
6676 | // refer to some other declaration, then that entity is a member of the | |||
6677 | // innermost enclosing namespace. | |||
6678 | // | |||
6679 | // Per C++11 [namespace.def]p6, the innermost enclosing namespace is a | |||
6680 | // semantically-enclosing namespace, not a lexically-enclosing one. | |||
6681 | while (!DC->isFileContext() && !isa<LinkageSpecDecl>(DC)) | |||
6682 | DC = DC->getParent(); | |||
6683 | return true; | |||
6684 | } | |||
6685 | ||||
6686 | /// Returns true if given declaration has external C language linkage. | |||
6687 | static bool isDeclExternC(const Decl *D) { | |||
6688 | if (const auto *FD = dyn_cast<FunctionDecl>(D)) | |||
6689 | return FD->isExternC(); | |||
6690 | if (const auto *VD = dyn_cast<VarDecl>(D)) | |||
6691 | return VD->isExternC(); | |||
6692 | ||||
6693 | llvm_unreachable("Unknown type of decl!")::llvm::llvm_unreachable_internal("Unknown type of decl!", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6693); | |||
6694 | } | |||
6695 | /// Returns true if there hasn't been any invalid type diagnosed. | |||
6696 | static bool diagnoseOpenCLTypes(Scope *S, Sema &Se, Declarator &D, | |||
6697 | DeclContext *DC, QualType R) { | |||
6698 | // OpenCL v2.0 s6.9.b - Image type can only be used as a function argument. | |||
6699 | // OpenCL v2.0 s6.13.16.1 - Pipe type can only be used as a function | |||
6700 | // argument. | |||
6701 | if (R->isImageType() || R->isPipeType()) { | |||
6702 | Se.Diag(D.getIdentifierLoc(), | |||
6703 | diag::err_opencl_type_can_only_be_used_as_function_parameter) | |||
6704 | << R; | |||
6705 | D.setInvalidType(); | |||
6706 | return false; | |||
6707 | } | |||
6708 | ||||
6709 | // OpenCL v1.2 s6.9.r: | |||
6710 | // The event type cannot be used to declare a program scope variable. | |||
6711 | // OpenCL v2.0 s6.9.q: | |||
6712 | // The clk_event_t and reserve_id_t types cannot be declared in program | |||
6713 | // scope. | |||
6714 | if (NULL__null == S->getParent()) { | |||
6715 | if (R->isReserveIDT() || R->isClkEventT() || R->isEventT()) { | |||
6716 | Se.Diag(D.getIdentifierLoc(), | |||
6717 | diag::err_invalid_type_for_program_scope_var) | |||
6718 | << R; | |||
6719 | D.setInvalidType(); | |||
6720 | return false; | |||
6721 | } | |||
6722 | } | |||
6723 | ||||
6724 | // OpenCL v1.0 s6.8.a.3: Pointers to functions are not allowed. | |||
6725 | QualType NR = R; | |||
6726 | while (NR->isPointerType()) { | |||
6727 | if (NR->isFunctionPointerType()) { | |||
6728 | Se.Diag(D.getIdentifierLoc(), diag::err_opencl_function_pointer); | |||
6729 | D.setInvalidType(); | |||
6730 | return false; | |||
6731 | } | |||
6732 | NR = NR->getPointeeType(); | |||
6733 | } | |||
6734 | ||||
6735 | if (!Se.getOpenCLOptions().isEnabled("cl_khr_fp16")) { | |||
6736 | // OpenCL v1.2 s6.1.1.1: reject declaring variables of the half and | |||
6737 | // half array type (unless the cl_khr_fp16 extension is enabled). | |||
6738 | if (Se.Context.getBaseElementType(R)->isHalfType()) { | |||
6739 | Se.Diag(D.getIdentifierLoc(), diag::err_opencl_half_declaration) << R; | |||
6740 | D.setInvalidType(); | |||
6741 | return false; | |||
6742 | } | |||
6743 | } | |||
6744 | ||||
6745 | // OpenCL v1.2 s6.9.r: | |||
6746 | // The event type cannot be used with the __local, __constant and __global | |||
6747 | // address space qualifiers. | |||
6748 | if (R->isEventT()) { | |||
6749 | if (R.getAddressSpace() != LangAS::opencl_private) { | |||
6750 | Se.Diag(D.getBeginLoc(), diag::err_event_t_addr_space_qual); | |||
6751 | D.setInvalidType(); | |||
6752 | return false; | |||
6753 | } | |||
6754 | } | |||
6755 | ||||
6756 | // C++ for OpenCL does not allow the thread_local storage qualifier. | |||
6757 | // OpenCL C does not support thread_local either, and | |||
6758 | // also reject all other thread storage class specifiers. | |||
6759 | DeclSpec::TSCS TSC = D.getDeclSpec().getThreadStorageClassSpec(); | |||
6760 | if (TSC != TSCS_unspecified) { | |||
6761 | bool IsCXX = Se.getLangOpts().OpenCLCPlusPlus; | |||
6762 | Se.Diag(D.getDeclSpec().getThreadStorageClassSpecLoc(), | |||
6763 | diag::err_opencl_unknown_type_specifier) | |||
6764 | << IsCXX << Se.getLangOpts().getOpenCLVersionTuple().getAsString() | |||
6765 | << DeclSpec::getSpecifierName(TSC) << 1; | |||
6766 | D.setInvalidType(); | |||
6767 | return false; | |||
6768 | } | |||
6769 | ||||
6770 | if (R->isSamplerT()) { | |||
6771 | // OpenCL v1.2 s6.9.b p4: | |||
6772 | // The sampler type cannot be used with the __local and __global address | |||
6773 | // space qualifiers. | |||
6774 | if (R.getAddressSpace() == LangAS::opencl_local || | |||
6775 | R.getAddressSpace() == LangAS::opencl_global) { | |||
6776 | Se.Diag(D.getIdentifierLoc(), diag::err_wrong_sampler_addressspace); | |||
6777 | D.setInvalidType(); | |||
6778 | } | |||
6779 | ||||
6780 | // OpenCL v1.2 s6.12.14.1: | |||
6781 | // A global sampler must be declared with either the constant address | |||
6782 | // space qualifier or with the const qualifier. | |||
6783 | if (DC->isTranslationUnit() && | |||
6784 | !(R.getAddressSpace() == LangAS::opencl_constant || | |||
6785 | R.isConstQualified())) { | |||
6786 | Se.Diag(D.getIdentifierLoc(), diag::err_opencl_nonconst_global_sampler); | |||
6787 | D.setInvalidType(); | |||
6788 | } | |||
6789 | if (D.isInvalidType()) | |||
6790 | return false; | |||
6791 | } | |||
6792 | return true; | |||
6793 | } | |||
6794 | ||||
6795 | NamedDecl *Sema::ActOnVariableDeclarator( | |||
6796 | Scope *S, Declarator &D, DeclContext *DC, TypeSourceInfo *TInfo, | |||
6797 | LookupResult &Previous, MultiTemplateParamsArg TemplateParamLists, | |||
6798 | bool &AddToScope, ArrayRef<BindingDecl *> Bindings) { | |||
6799 | QualType R = TInfo->getType(); | |||
6800 | DeclarationName Name = GetNameForDeclarator(D).getName(); | |||
6801 | ||||
6802 | IdentifierInfo *II = Name.getAsIdentifierInfo(); | |||
6803 | ||||
6804 | if (D.isDecompositionDeclarator()) { | |||
6805 | // Take the name of the first declarator as our name for diagnostic | |||
6806 | // purposes. | |||
6807 | auto &Decomp = D.getDecompositionDeclarator(); | |||
6808 | if (!Decomp.bindings().empty()) { | |||
6809 | II = Decomp.bindings()[0].Name; | |||
6810 | Name = II; | |||
6811 | } | |||
6812 | } else if (!II) { | |||
6813 | Diag(D.getIdentifierLoc(), diag::err_bad_variable_name) << Name; | |||
6814 | return nullptr; | |||
6815 | } | |||
6816 | ||||
6817 | ||||
6818 | DeclSpec::SCS SCSpec = D.getDeclSpec().getStorageClassSpec(); | |||
6819 | StorageClass SC = StorageClassSpecToVarDeclStorageClass(D.getDeclSpec()); | |||
6820 | ||||
6821 | // dllimport globals without explicit storage class are treated as extern. We | |||
6822 | // have to change the storage class this early to get the right DeclContext. | |||
6823 | if (SC == SC_None && !DC->isRecord() && | |||
6824 | hasParsedAttr(S, D, ParsedAttr::AT_DLLImport) && | |||
6825 | !hasParsedAttr(S, D, ParsedAttr::AT_DLLExport)) | |||
6826 | SC = SC_Extern; | |||
6827 | ||||
6828 | DeclContext *OriginalDC = DC; | |||
6829 | bool IsLocalExternDecl = SC == SC_Extern && | |||
6830 | adjustContextForLocalExternDecl(DC); | |||
6831 | ||||
6832 | if (SCSpec == DeclSpec::SCS_mutable) { | |||
6833 | // mutable can only appear on non-static class members, so it's always | |||
6834 | // an error here | |||
6835 | Diag(D.getIdentifierLoc(), diag::err_mutable_nonmember); | |||
6836 | D.setInvalidType(); | |||
6837 | SC = SC_None; | |||
6838 | } | |||
6839 | ||||
6840 | if (getLangOpts().CPlusPlus11 && SCSpec == DeclSpec::SCS_register && | |||
6841 | !D.getAsmLabel() && !getSourceManager().isInSystemMacro( | |||
6842 | D.getDeclSpec().getStorageClassSpecLoc())) { | |||
6843 | // In C++11, the 'register' storage class specifier is deprecated. | |||
6844 | // Suppress the warning in system macros, it's used in macros in some | |||
6845 | // popular C system headers, such as in glibc's htonl() macro. | |||
6846 | Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
6847 | getLangOpts().CPlusPlus17 ? diag::ext_register_storage_class | |||
6848 | : diag::warn_deprecated_register) | |||
6849 | << FixItHint::CreateRemoval(D.getDeclSpec().getStorageClassSpecLoc()); | |||
6850 | } | |||
6851 | ||||
6852 | DiagnoseFunctionSpecifiers(D.getDeclSpec()); | |||
6853 | ||||
6854 | if (!DC->isRecord() && S->getFnParent() == nullptr) { | |||
6855 | // C99 6.9p2: The storage-class specifiers auto and register shall not | |||
6856 | // appear in the declaration specifiers in an external declaration. | |||
6857 | // Global Register+Asm is a GNU extension we support. | |||
6858 | if (SC == SC_Auto || (SC == SC_Register && !D.getAsmLabel())) { | |||
6859 | Diag(D.getIdentifierLoc(), diag::err_typecheck_sclass_fscope); | |||
6860 | D.setInvalidType(); | |||
6861 | } | |||
6862 | } | |||
6863 | ||||
6864 | bool IsMemberSpecialization = false; | |||
6865 | bool IsVariableTemplateSpecialization = false; | |||
6866 | bool IsPartialSpecialization = false; | |||
6867 | bool IsVariableTemplate = false; | |||
6868 | VarDecl *NewVD = nullptr; | |||
6869 | VarTemplateDecl *NewTemplate = nullptr; | |||
6870 | TemplateParameterList *TemplateParams = nullptr; | |||
6871 | if (!getLangOpts().CPlusPlus) { | |||
6872 | NewVD = VarDecl::Create(Context, DC, D.getBeginLoc(), D.getIdentifierLoc(), | |||
6873 | II, R, TInfo, SC); | |||
6874 | ||||
6875 | if (R->getContainedDeducedType()) | |||
6876 | ParsingInitForAutoVars.insert(NewVD); | |||
6877 | ||||
6878 | if (D.isInvalidType()) | |||
6879 | NewVD->setInvalidDecl(); | |||
6880 | ||||
6881 | if (NewVD->getType().hasNonTrivialToPrimitiveDestructCUnion() && | |||
6882 | NewVD->hasLocalStorage()) | |||
6883 | checkNonTrivialCUnion(NewVD->getType(), NewVD->getLocation(), | |||
6884 | NTCUC_AutoVar, NTCUK_Destruct); | |||
6885 | } else { | |||
6886 | bool Invalid = false; | |||
6887 | ||||
6888 | if (DC->isRecord() && !CurContext->isRecord()) { | |||
6889 | // This is an out-of-line definition of a static data member. | |||
6890 | switch (SC) { | |||
6891 | case SC_None: | |||
6892 | break; | |||
6893 | case SC_Static: | |||
6894 | Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
6895 | diag::err_static_out_of_line) | |||
6896 | << FixItHint::CreateRemoval(D.getDeclSpec().getStorageClassSpecLoc()); | |||
6897 | break; | |||
6898 | case SC_Auto: | |||
6899 | case SC_Register: | |||
6900 | case SC_Extern: | |||
6901 | // [dcl.stc] p2: The auto or register specifiers shall be applied only | |||
6902 | // to names of variables declared in a block or to function parameters. | |||
6903 | // [dcl.stc] p6: The extern specifier cannot be used in the declaration | |||
6904 | // of class members | |||
6905 | ||||
6906 | Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
6907 | diag::err_storage_class_for_static_member) | |||
6908 | << FixItHint::CreateRemoval(D.getDeclSpec().getStorageClassSpecLoc()); | |||
6909 | break; | |||
6910 | case SC_PrivateExtern: | |||
6911 | llvm_unreachable("C storage class in c++!")::llvm::llvm_unreachable_internal("C storage class in c++!", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 6911); | |||
6912 | } | |||
6913 | } | |||
6914 | ||||
6915 | if (SC == SC_Static && CurContext->isRecord()) { | |||
6916 | if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(DC)) { | |||
6917 | // Walk up the enclosing DeclContexts to check for any that are | |||
6918 | // incompatible with static data members. | |||
6919 | const DeclContext *FunctionOrMethod = nullptr; | |||
6920 | const CXXRecordDecl *AnonStruct = nullptr; | |||
6921 | for (DeclContext *Ctxt = DC; Ctxt; Ctxt = Ctxt->getParent()) { | |||
6922 | if (Ctxt->isFunctionOrMethod()) { | |||
6923 | FunctionOrMethod = Ctxt; | |||
6924 | break; | |||
6925 | } | |||
6926 | const CXXRecordDecl *ParentDecl = dyn_cast<CXXRecordDecl>(Ctxt); | |||
6927 | if (ParentDecl && !ParentDecl->getDeclName()) { | |||
6928 | AnonStruct = ParentDecl; | |||
6929 | break; | |||
6930 | } | |||
6931 | } | |||
6932 | if (FunctionOrMethod) { | |||
6933 | // C++ [class.static.data]p5: A local class shall not have static data | |||
6934 | // members. | |||
6935 | Diag(D.getIdentifierLoc(), | |||
6936 | diag::err_static_data_member_not_allowed_in_local_class) | |||
6937 | << Name << RD->getDeclName() << RD->getTagKind(); | |||
6938 | } else if (AnonStruct) { | |||
6939 | // C++ [class.static.data]p4: Unnamed classes and classes contained | |||
6940 | // directly or indirectly within unnamed classes shall not contain | |||
6941 | // static data members. | |||
6942 | Diag(D.getIdentifierLoc(), | |||
6943 | diag::err_static_data_member_not_allowed_in_anon_struct) | |||
6944 | << Name << AnonStruct->getTagKind(); | |||
6945 | Invalid = true; | |||
6946 | } else if (RD->isUnion()) { | |||
6947 | // C++98 [class.union]p1: If a union contains a static data member, | |||
6948 | // the program is ill-formed. C++11 drops this restriction. | |||
6949 | Diag(D.getIdentifierLoc(), | |||
6950 | getLangOpts().CPlusPlus11 | |||
6951 | ? diag::warn_cxx98_compat_static_data_member_in_union | |||
6952 | : diag::ext_static_data_member_in_union) << Name; | |||
6953 | } | |||
6954 | } | |||
6955 | } | |||
6956 | ||||
6957 | // Match up the template parameter lists with the scope specifier, then | |||
6958 | // determine whether we have a template or a template specialization. | |||
6959 | bool InvalidScope = false; | |||
6960 | TemplateParams = MatchTemplateParametersToScopeSpecifier( | |||
6961 | D.getDeclSpec().getBeginLoc(), D.getIdentifierLoc(), | |||
6962 | D.getCXXScopeSpec(), | |||
6963 | D.getName().getKind() == UnqualifiedIdKind::IK_TemplateId | |||
6964 | ? D.getName().TemplateId | |||
6965 | : nullptr, | |||
6966 | TemplateParamLists, | |||
6967 | /*never a friend*/ false, IsMemberSpecialization, InvalidScope); | |||
6968 | Invalid |= InvalidScope; | |||
6969 | ||||
6970 | if (TemplateParams) { | |||
6971 | if (!TemplateParams->size() && | |||
6972 | D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) { | |||
6973 | // There is an extraneous 'template<>' for this variable. Complain | |||
6974 | // about it, but allow the declaration of the variable. | |||
6975 | Diag(TemplateParams->getTemplateLoc(), | |||
6976 | diag::err_template_variable_noparams) | |||
6977 | << II | |||
6978 | << SourceRange(TemplateParams->getTemplateLoc(), | |||
6979 | TemplateParams->getRAngleLoc()); | |||
6980 | TemplateParams = nullptr; | |||
6981 | } else { | |||
6982 | // Check that we can declare a template here. | |||
6983 | if (CheckTemplateDeclScope(S, TemplateParams)) | |||
6984 | return nullptr; | |||
6985 | ||||
6986 | if (D.getName().getKind() == UnqualifiedIdKind::IK_TemplateId) { | |||
6987 | // This is an explicit specialization or a partial specialization. | |||
6988 | IsVariableTemplateSpecialization = true; | |||
6989 | IsPartialSpecialization = TemplateParams->size() > 0; | |||
6990 | } else { // if (TemplateParams->size() > 0) | |||
6991 | // This is a template declaration. | |||
6992 | IsVariableTemplate = true; | |||
6993 | ||||
6994 | // Only C++1y supports variable templates (N3651). | |||
6995 | Diag(D.getIdentifierLoc(), | |||
6996 | getLangOpts().CPlusPlus14 | |||
6997 | ? diag::warn_cxx11_compat_variable_template | |||
6998 | : diag::ext_variable_template); | |||
6999 | } | |||
7000 | } | |||
7001 | } else { | |||
7002 | // Check that we can declare a member specialization here. | |||
7003 | if (!TemplateParamLists.empty() && IsMemberSpecialization && | |||
7004 | CheckTemplateDeclScope(S, TemplateParamLists.back())) | |||
7005 | return nullptr; | |||
7006 | assert((Invalid ||(((Invalid || D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId ) && "should have a 'template<>' for this decl" ) ? static_cast<void> (0) : __assert_fail ("(Invalid || D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) && \"should have a 'template<>' for this decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7008, __PRETTY_FUNCTION__)) | |||
7007 | D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) &&(((Invalid || D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId ) && "should have a 'template<>' for this decl" ) ? static_cast<void> (0) : __assert_fail ("(Invalid || D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) && \"should have a 'template<>' for this decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7008, __PRETTY_FUNCTION__)) | |||
7008 | "should have a 'template<>' for this decl")(((Invalid || D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId ) && "should have a 'template<>' for this decl" ) ? static_cast<void> (0) : __assert_fail ("(Invalid || D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) && \"should have a 'template<>' for this decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7008, __PRETTY_FUNCTION__)); | |||
7009 | } | |||
7010 | ||||
7011 | if (IsVariableTemplateSpecialization) { | |||
7012 | SourceLocation TemplateKWLoc = | |||
7013 | TemplateParamLists.size() > 0 | |||
7014 | ? TemplateParamLists[0]->getTemplateLoc() | |||
7015 | : SourceLocation(); | |||
7016 | DeclResult Res = ActOnVarTemplateSpecialization( | |||
7017 | S, D, TInfo, TemplateKWLoc, TemplateParams, SC, | |||
7018 | IsPartialSpecialization); | |||
7019 | if (Res.isInvalid()) | |||
7020 | return nullptr; | |||
7021 | NewVD = cast<VarDecl>(Res.get()); | |||
7022 | AddToScope = false; | |||
7023 | } else if (D.isDecompositionDeclarator()) { | |||
7024 | NewVD = DecompositionDecl::Create(Context, DC, D.getBeginLoc(), | |||
7025 | D.getIdentifierLoc(), R, TInfo, SC, | |||
7026 | Bindings); | |||
7027 | } else | |||
7028 | NewVD = VarDecl::Create(Context, DC, D.getBeginLoc(), | |||
7029 | D.getIdentifierLoc(), II, R, TInfo, SC); | |||
7030 | ||||
7031 | // If this is supposed to be a variable template, create it as such. | |||
7032 | if (IsVariableTemplate) { | |||
7033 | NewTemplate = | |||
7034 | VarTemplateDecl::Create(Context, DC, D.getIdentifierLoc(), Name, | |||
7035 | TemplateParams, NewVD); | |||
7036 | NewVD->setDescribedVarTemplate(NewTemplate); | |||
7037 | } | |||
7038 | ||||
7039 | // If this decl has an auto type in need of deduction, make a note of the | |||
7040 | // Decl so we can diagnose uses of it in its own initializer. | |||
7041 | if (R->getContainedDeducedType()) | |||
7042 | ParsingInitForAutoVars.insert(NewVD); | |||
7043 | ||||
7044 | if (D.isInvalidType() || Invalid) { | |||
7045 | NewVD->setInvalidDecl(); | |||
7046 | if (NewTemplate) | |||
7047 | NewTemplate->setInvalidDecl(); | |||
7048 | } | |||
7049 | ||||
7050 | SetNestedNameSpecifier(*this, NewVD, D); | |||
7051 | ||||
7052 | // If we have any template parameter lists that don't directly belong to | |||
7053 | // the variable (matching the scope specifier), store them. | |||
7054 | unsigned VDTemplateParamLists = TemplateParams ? 1 : 0; | |||
7055 | if (TemplateParamLists.size() > VDTemplateParamLists) | |||
7056 | NewVD->setTemplateParameterListsInfo( | |||
7057 | Context, TemplateParamLists.drop_back(VDTemplateParamLists)); | |||
7058 | } | |||
7059 | ||||
7060 | if (D.getDeclSpec().isInlineSpecified()) { | |||
7061 | if (!getLangOpts().CPlusPlus) { | |||
7062 | Diag(D.getDeclSpec().getInlineSpecLoc(), diag::err_inline_non_function) | |||
7063 | << 0; | |||
7064 | } else if (CurContext->isFunctionOrMethod()) { | |||
7065 | // 'inline' is not allowed on block scope variable declaration. | |||
7066 | Diag(D.getDeclSpec().getInlineSpecLoc(), | |||
7067 | diag::err_inline_declaration_block_scope) << Name | |||
7068 | << FixItHint::CreateRemoval(D.getDeclSpec().getInlineSpecLoc()); | |||
7069 | } else { | |||
7070 | Diag(D.getDeclSpec().getInlineSpecLoc(), | |||
7071 | getLangOpts().CPlusPlus17 ? diag::warn_cxx14_compat_inline_variable | |||
7072 | : diag::ext_inline_variable); | |||
7073 | NewVD->setInlineSpecified(); | |||
7074 | } | |||
7075 | } | |||
7076 | ||||
7077 | // Set the lexical context. If the declarator has a C++ scope specifier, the | |||
7078 | // lexical context will be different from the semantic context. | |||
7079 | NewVD->setLexicalDeclContext(CurContext); | |||
7080 | if (NewTemplate) | |||
7081 | NewTemplate->setLexicalDeclContext(CurContext); | |||
7082 | ||||
7083 | if (IsLocalExternDecl) { | |||
7084 | if (D.isDecompositionDeclarator()) | |||
7085 | for (auto *B : Bindings) | |||
7086 | B->setLocalExternDecl(); | |||
7087 | else | |||
7088 | NewVD->setLocalExternDecl(); | |||
7089 | } | |||
7090 | ||||
7091 | bool EmitTLSUnsupportedError = false; | |||
7092 | if (DeclSpec::TSCS TSCS = D.getDeclSpec().getThreadStorageClassSpec()) { | |||
7093 | // C++11 [dcl.stc]p4: | |||
7094 | // When thread_local is applied to a variable of block scope the | |||
7095 | // storage-class-specifier static is implied if it does not appear | |||
7096 | // explicitly. | |||
7097 | // Core issue: 'static' is not implied if the variable is declared | |||
7098 | // 'extern'. | |||
7099 | if (NewVD->hasLocalStorage() && | |||
7100 | (SCSpec != DeclSpec::SCS_unspecified || | |||
7101 | TSCS != DeclSpec::TSCS_thread_local || | |||
7102 | !DC->isFunctionOrMethod())) | |||
7103 | Diag(D.getDeclSpec().getThreadStorageClassSpecLoc(), | |||
7104 | diag::err_thread_non_global) | |||
7105 | << DeclSpec::getSpecifierName(TSCS); | |||
7106 | else if (!Context.getTargetInfo().isTLSSupported()) { | |||
7107 | if (getLangOpts().CUDA || getLangOpts().OpenMPIsDevice || | |||
7108 | getLangOpts().SYCLIsDevice) { | |||
7109 | // Postpone error emission until we've collected attributes required to | |||
7110 | // figure out whether it's a host or device variable and whether the | |||
7111 | // error should be ignored. | |||
7112 | EmitTLSUnsupportedError = true; | |||
7113 | // We still need to mark the variable as TLS so it shows up in AST with | |||
7114 | // proper storage class for other tools to use even if we're not going | |||
7115 | // to emit any code for it. | |||
7116 | NewVD->setTSCSpec(TSCS); | |||
7117 | } else | |||
7118 | Diag(D.getDeclSpec().getThreadStorageClassSpecLoc(), | |||
7119 | diag::err_thread_unsupported); | |||
7120 | } else | |||
7121 | NewVD->setTSCSpec(TSCS); | |||
7122 | } | |||
7123 | ||||
7124 | switch (D.getDeclSpec().getConstexprSpecifier()) { | |||
7125 | case ConstexprSpecKind::Unspecified: | |||
7126 | break; | |||
7127 | ||||
7128 | case ConstexprSpecKind::Consteval: | |||
7129 | Diag(D.getDeclSpec().getConstexprSpecLoc(), | |||
7130 | diag::err_constexpr_wrong_decl_kind) | |||
7131 | << static_cast<int>(D.getDeclSpec().getConstexprSpecifier()); | |||
7132 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | |||
7133 | ||||
7134 | case ConstexprSpecKind::Constexpr: | |||
7135 | NewVD->setConstexpr(true); | |||
7136 | MaybeAddCUDAConstantAttr(NewVD); | |||
7137 | // C++1z [dcl.spec.constexpr]p1: | |||
7138 | // A static data member declared with the constexpr specifier is | |||
7139 | // implicitly an inline variable. | |||
7140 | if (NewVD->isStaticDataMember() && | |||
7141 | (getLangOpts().CPlusPlus17 || | |||
7142 | Context.getTargetInfo().getCXXABI().isMicrosoft())) | |||
7143 | NewVD->setImplicitlyInline(); | |||
7144 | break; | |||
7145 | ||||
7146 | case ConstexprSpecKind::Constinit: | |||
7147 | if (!NewVD->hasGlobalStorage()) | |||
7148 | Diag(D.getDeclSpec().getConstexprSpecLoc(), | |||
7149 | diag::err_constinit_local_variable); | |||
7150 | else | |||
7151 | NewVD->addAttr(ConstInitAttr::Create( | |||
7152 | Context, D.getDeclSpec().getConstexprSpecLoc(), | |||
7153 | AttributeCommonInfo::AS_Keyword, ConstInitAttr::Keyword_constinit)); | |||
7154 | break; | |||
7155 | } | |||
7156 | ||||
7157 | // C99 6.7.4p3 | |||
7158 | // An inline definition of a function with external linkage shall | |||
7159 | // not contain a definition of a modifiable object with static or | |||
7160 | // thread storage duration... | |||
7161 | // We only apply this when the function is required to be defined | |||
7162 | // elsewhere, i.e. when the function is not 'extern inline'. Note | |||
7163 | // that a local variable with thread storage duration still has to | |||
7164 | // be marked 'static'. Also note that it's possible to get these | |||
7165 | // semantics in C++ using __attribute__((gnu_inline)). | |||
7166 | if (SC == SC_Static && S->getFnParent() != nullptr && | |||
7167 | !NewVD->getType().isConstQualified()) { | |||
7168 | FunctionDecl *CurFD = getCurFunctionDecl(); | |||
7169 | if (CurFD && isFunctionDefinitionDiscarded(*this, CurFD)) { | |||
7170 | Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
7171 | diag::warn_static_local_in_extern_inline); | |||
7172 | MaybeSuggestAddingStaticToDecl(CurFD); | |||
7173 | } | |||
7174 | } | |||
7175 | ||||
7176 | if (D.getDeclSpec().isModulePrivateSpecified()) { | |||
7177 | if (IsVariableTemplateSpecialization) | |||
7178 | Diag(NewVD->getLocation(), diag::err_module_private_specialization) | |||
7179 | << (IsPartialSpecialization ? 1 : 0) | |||
7180 | << FixItHint::CreateRemoval( | |||
7181 | D.getDeclSpec().getModulePrivateSpecLoc()); | |||
7182 | else if (IsMemberSpecialization) | |||
7183 | Diag(NewVD->getLocation(), diag::err_module_private_specialization) | |||
7184 | << 2 | |||
7185 | << FixItHint::CreateRemoval(D.getDeclSpec().getModulePrivateSpecLoc()); | |||
7186 | else if (NewVD->hasLocalStorage()) | |||
7187 | Diag(NewVD->getLocation(), diag::err_module_private_local) | |||
7188 | << 0 << NewVD | |||
7189 | << SourceRange(D.getDeclSpec().getModulePrivateSpecLoc()) | |||
7190 | << FixItHint::CreateRemoval( | |||
7191 | D.getDeclSpec().getModulePrivateSpecLoc()); | |||
7192 | else { | |||
7193 | NewVD->setModulePrivate(); | |||
7194 | if (NewTemplate) | |||
7195 | NewTemplate->setModulePrivate(); | |||
7196 | for (auto *B : Bindings) | |||
7197 | B->setModulePrivate(); | |||
7198 | } | |||
7199 | } | |||
7200 | ||||
7201 | if (getLangOpts().OpenCL) { | |||
7202 | ||||
7203 | deduceOpenCLAddressSpace(NewVD); | |||
7204 | ||||
7205 | diagnoseOpenCLTypes(S, *this, D, DC, NewVD->getType()); | |||
7206 | } | |||
7207 | ||||
7208 | // Handle attributes prior to checking for duplicates in MergeVarDecl | |||
7209 | ProcessDeclAttributes(S, NewVD, D); | |||
7210 | ||||
7211 | if (getLangOpts().CUDA || getLangOpts().OpenMPIsDevice || | |||
7212 | getLangOpts().SYCLIsDevice) { | |||
7213 | if (EmitTLSUnsupportedError && | |||
7214 | ((getLangOpts().CUDA && DeclAttrsMatchCUDAMode(getLangOpts(), NewVD)) || | |||
7215 | (getLangOpts().OpenMPIsDevice && | |||
7216 | OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(NewVD)))) | |||
7217 | Diag(D.getDeclSpec().getThreadStorageClassSpecLoc(), | |||
7218 | diag::err_thread_unsupported); | |||
7219 | ||||
7220 | if (EmitTLSUnsupportedError && | |||
7221 | (LangOpts.SYCLIsDevice || (LangOpts.OpenMP && LangOpts.OpenMPIsDevice))) | |||
7222 | targetDiag(D.getIdentifierLoc(), diag::err_thread_unsupported); | |||
7223 | // CUDA B.2.5: "__shared__ and __constant__ variables have implied static | |||
7224 | // storage [duration]." | |||
7225 | if (SC == SC_None && S->getFnParent() != nullptr && | |||
7226 | (NewVD->hasAttr<CUDASharedAttr>() || | |||
7227 | NewVD->hasAttr<CUDAConstantAttr>())) { | |||
7228 | NewVD->setStorageClass(SC_Static); | |||
7229 | } | |||
7230 | } | |||
7231 | ||||
7232 | // Ensure that dllimport globals without explicit storage class are treated as | |||
7233 | // extern. The storage class is set above using parsed attributes. Now we can | |||
7234 | // check the VarDecl itself. | |||
7235 | assert(!NewVD->hasAttr<DLLImportAttr>() ||((!NewVD->hasAttr<DLLImportAttr>() || NewVD->getAttr <DLLImportAttr>()->isInherited() || NewVD->isStaticDataMember () || NewVD->getStorageClass() != SC_None) ? static_cast< void> (0) : __assert_fail ("!NewVD->hasAttr<DLLImportAttr>() || NewVD->getAttr<DLLImportAttr>()->isInherited() || NewVD->isStaticDataMember() || NewVD->getStorageClass() != SC_None" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7237, __PRETTY_FUNCTION__)) | |||
7236 | NewVD->getAttr<DLLImportAttr>()->isInherited() ||((!NewVD->hasAttr<DLLImportAttr>() || NewVD->getAttr <DLLImportAttr>()->isInherited() || NewVD->isStaticDataMember () || NewVD->getStorageClass() != SC_None) ? static_cast< void> (0) : __assert_fail ("!NewVD->hasAttr<DLLImportAttr>() || NewVD->getAttr<DLLImportAttr>()->isInherited() || NewVD->isStaticDataMember() || NewVD->getStorageClass() != SC_None" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7237, __PRETTY_FUNCTION__)) | |||
7237 | NewVD->isStaticDataMember() || NewVD->getStorageClass() != SC_None)((!NewVD->hasAttr<DLLImportAttr>() || NewVD->getAttr <DLLImportAttr>()->isInherited() || NewVD->isStaticDataMember () || NewVD->getStorageClass() != SC_None) ? static_cast< void> (0) : __assert_fail ("!NewVD->hasAttr<DLLImportAttr>() || NewVD->getAttr<DLLImportAttr>()->isInherited() || NewVD->isStaticDataMember() || NewVD->getStorageClass() != SC_None" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7237, __PRETTY_FUNCTION__)); | |||
7238 | ||||
7239 | // In auto-retain/release, infer strong retension for variables of | |||
7240 | // retainable type. | |||
7241 | if (getLangOpts().ObjCAutoRefCount && inferObjCARCLifetime(NewVD)) | |||
7242 | NewVD->setInvalidDecl(); | |||
7243 | ||||
7244 | // Handle GNU asm-label extension (encoded as an attribute). | |||
7245 | if (Expr *E = (Expr*)D.getAsmLabel()) { | |||
7246 | // The parser guarantees this is a string. | |||
7247 | StringLiteral *SE = cast<StringLiteral>(E); | |||
7248 | StringRef Label = SE->getString(); | |||
7249 | if (S->getFnParent() != nullptr) { | |||
7250 | switch (SC) { | |||
7251 | case SC_None: | |||
7252 | case SC_Auto: | |||
7253 | Diag(E->getExprLoc(), diag::warn_asm_label_on_auto_decl) << Label; | |||
7254 | break; | |||
7255 | case SC_Register: | |||
7256 | // Local Named register | |||
7257 | if (!Context.getTargetInfo().isValidGCCRegisterName(Label) && | |||
7258 | DeclAttrsMatchCUDAMode(getLangOpts(), getCurFunctionDecl())) | |||
7259 | Diag(E->getExprLoc(), diag::err_asm_unknown_register_name) << Label; | |||
7260 | break; | |||
7261 | case SC_Static: | |||
7262 | case SC_Extern: | |||
7263 | case SC_PrivateExtern: | |||
7264 | break; | |||
7265 | } | |||
7266 | } else if (SC == SC_Register) { | |||
7267 | // Global Named register | |||
7268 | if (DeclAttrsMatchCUDAMode(getLangOpts(), NewVD)) { | |||
7269 | const auto &TI = Context.getTargetInfo(); | |||
7270 | bool HasSizeMismatch; | |||
7271 | ||||
7272 | if (!TI.isValidGCCRegisterName(Label)) | |||
7273 | Diag(E->getExprLoc(), diag::err_asm_unknown_register_name) << Label; | |||
7274 | else if (!TI.validateGlobalRegisterVariable(Label, | |||
7275 | Context.getTypeSize(R), | |||
7276 | HasSizeMismatch)) | |||
7277 | Diag(E->getExprLoc(), diag::err_asm_invalid_global_var_reg) << Label; | |||
7278 | else if (HasSizeMismatch) | |||
7279 | Diag(E->getExprLoc(), diag::err_asm_register_size_mismatch) << Label; | |||
7280 | } | |||
7281 | ||||
7282 | if (!R->isIntegralType(Context) && !R->isPointerType()) { | |||
7283 | Diag(D.getBeginLoc(), diag::err_asm_bad_register_type); | |||
7284 | NewVD->setInvalidDecl(true); | |||
7285 | } | |||
7286 | } | |||
7287 | ||||
7288 | NewVD->addAttr(AsmLabelAttr::Create(Context, Label, | |||
7289 | /*IsLiteralLabel=*/true, | |||
7290 | SE->getStrTokenLoc(0))); | |||
7291 | } else if (!ExtnameUndeclaredIdentifiers.empty()) { | |||
7292 | llvm::DenseMap<IdentifierInfo*,AsmLabelAttr*>::iterator I = | |||
7293 | ExtnameUndeclaredIdentifiers.find(NewVD->getIdentifier()); | |||
7294 | if (I != ExtnameUndeclaredIdentifiers.end()) { | |||
7295 | if (isDeclExternC(NewVD)) { | |||
7296 | NewVD->addAttr(I->second); | |||
7297 | ExtnameUndeclaredIdentifiers.erase(I); | |||
7298 | } else | |||
7299 | Diag(NewVD->getLocation(), diag::warn_redefine_extname_not_applied) | |||
7300 | << /*Variable*/1 << NewVD; | |||
7301 | } | |||
7302 | } | |||
7303 | ||||
7304 | // Find the shadowed declaration before filtering for scope. | |||
7305 | NamedDecl *ShadowedDecl = D.getCXXScopeSpec().isEmpty() | |||
7306 | ? getShadowedDeclaration(NewVD, Previous) | |||
7307 | : nullptr; | |||
7308 | ||||
7309 | // Don't consider existing declarations that are in a different | |||
7310 | // scope and are out-of-semantic-context declarations (if the new | |||
7311 | // declaration has linkage). | |||
7312 | FilterLookupForScope(Previous, OriginalDC, S, shouldConsiderLinkage(NewVD), | |||
7313 | D.getCXXScopeSpec().isNotEmpty() || | |||
7314 | IsMemberSpecialization || | |||
7315 | IsVariableTemplateSpecialization); | |||
7316 | ||||
7317 | // Check whether the previous declaration is in the same block scope. This | |||
7318 | // affects whether we merge types with it, per C++11 [dcl.array]p3. | |||
7319 | if (getLangOpts().CPlusPlus && | |||
7320 | NewVD->isLocalVarDecl() && NewVD->hasExternalStorage()) | |||
7321 | NewVD->setPreviousDeclInSameBlockScope( | |||
7322 | Previous.isSingleResult() && !Previous.isShadowed() && | |||
7323 | isDeclInScope(Previous.getFoundDecl(), OriginalDC, S, false)); | |||
7324 | ||||
7325 | if (!getLangOpts().CPlusPlus) { | |||
7326 | D.setRedeclaration(CheckVariableDeclaration(NewVD, Previous)); | |||
7327 | } else { | |||
7328 | // If this is an explicit specialization of a static data member, check it. | |||
7329 | if (IsMemberSpecialization && !NewVD->isInvalidDecl() && | |||
7330 | CheckMemberSpecialization(NewVD, Previous)) | |||
7331 | NewVD->setInvalidDecl(); | |||
7332 | ||||
7333 | // Merge the decl with the existing one if appropriate. | |||
7334 | if (!Previous.empty()) { | |||
7335 | if (Previous.isSingleResult() && | |||
7336 | isa<FieldDecl>(Previous.getFoundDecl()) && | |||
7337 | D.getCXXScopeSpec().isSet()) { | |||
7338 | // The user tried to define a non-static data member | |||
7339 | // out-of-line (C++ [dcl.meaning]p1). | |||
7340 | Diag(NewVD->getLocation(), diag::err_nonstatic_member_out_of_line) | |||
7341 | << D.getCXXScopeSpec().getRange(); | |||
7342 | Previous.clear(); | |||
7343 | NewVD->setInvalidDecl(); | |||
7344 | } | |||
7345 | } else if (D.getCXXScopeSpec().isSet()) { | |||
7346 | // No previous declaration in the qualifying scope. | |||
7347 | Diag(D.getIdentifierLoc(), diag::err_no_member) | |||
7348 | << Name << computeDeclContext(D.getCXXScopeSpec(), true) | |||
7349 | << D.getCXXScopeSpec().getRange(); | |||
7350 | NewVD->setInvalidDecl(); | |||
7351 | } | |||
7352 | ||||
7353 | if (!IsVariableTemplateSpecialization) | |||
7354 | D.setRedeclaration(CheckVariableDeclaration(NewVD, Previous)); | |||
7355 | ||||
7356 | if (NewTemplate) { | |||
7357 | VarTemplateDecl *PrevVarTemplate = | |||
7358 | NewVD->getPreviousDecl() | |||
7359 | ? NewVD->getPreviousDecl()->getDescribedVarTemplate() | |||
7360 | : nullptr; | |||
7361 | ||||
7362 | // Check the template parameter list of this declaration, possibly | |||
7363 | // merging in the template parameter list from the previous variable | |||
7364 | // template declaration. | |||
7365 | if (CheckTemplateParameterList( | |||
7366 | TemplateParams, | |||
7367 | PrevVarTemplate ? PrevVarTemplate->getTemplateParameters() | |||
7368 | : nullptr, | |||
7369 | (D.getCXXScopeSpec().isSet() && DC && DC->isRecord() && | |||
7370 | DC->isDependentContext()) | |||
7371 | ? TPC_ClassTemplateMember | |||
7372 | : TPC_VarTemplate)) | |||
7373 | NewVD->setInvalidDecl(); | |||
7374 | ||||
7375 | // If we are providing an explicit specialization of a static variable | |||
7376 | // template, make a note of that. | |||
7377 | if (PrevVarTemplate && | |||
7378 | PrevVarTemplate->getInstantiatedFromMemberTemplate()) | |||
7379 | PrevVarTemplate->setMemberSpecialization(); | |||
7380 | } | |||
7381 | } | |||
7382 | ||||
7383 | // Diagnose shadowed variables iff this isn't a redeclaration. | |||
7384 | if (ShadowedDecl && !D.isRedeclaration()) | |||
7385 | CheckShadow(NewVD, ShadowedDecl, Previous); | |||
7386 | ||||
7387 | ProcessPragmaWeak(S, NewVD); | |||
7388 | ||||
7389 | // If this is the first declaration of an extern C variable, update | |||
7390 | // the map of such variables. | |||
7391 | if (NewVD->isFirstDecl() && !NewVD->isInvalidDecl() && | |||
7392 | isIncompleteDeclExternC(*this, NewVD)) | |||
7393 | RegisterLocallyScopedExternCDecl(NewVD, S); | |||
7394 | ||||
7395 | if (getLangOpts().CPlusPlus && NewVD->isStaticLocal()) { | |||
7396 | MangleNumberingContext *MCtx; | |||
7397 | Decl *ManglingContextDecl; | |||
7398 | std::tie(MCtx, ManglingContextDecl) = | |||
7399 | getCurrentMangleNumberContext(NewVD->getDeclContext()); | |||
7400 | if (MCtx) { | |||
7401 | Context.setManglingNumber( | |||
7402 | NewVD, MCtx->getManglingNumber( | |||
7403 | NewVD, getMSManglingNumber(getLangOpts(), S))); | |||
7404 | Context.setStaticLocalNumber(NewVD, MCtx->getStaticLocalNumber(NewVD)); | |||
7405 | } | |||
7406 | } | |||
7407 | ||||
7408 | // Special handling of variable named 'main'. | |||
7409 | if (Name.getAsIdentifierInfo() && Name.getAsIdentifierInfo()->isStr("main") && | |||
7410 | NewVD->getDeclContext()->getRedeclContext()->isTranslationUnit() && | |||
7411 | !getLangOpts().Freestanding && !NewVD->getDescribedVarTemplate()) { | |||
7412 | ||||
7413 | // C++ [basic.start.main]p3 | |||
7414 | // A program that declares a variable main at global scope is ill-formed. | |||
7415 | if (getLangOpts().CPlusPlus) | |||
7416 | Diag(D.getBeginLoc(), diag::err_main_global_variable); | |||
7417 | ||||
7418 | // In C, and external-linkage variable named main results in undefined | |||
7419 | // behavior. | |||
7420 | else if (NewVD->hasExternalFormalLinkage()) | |||
7421 | Diag(D.getBeginLoc(), diag::warn_main_redefined); | |||
7422 | } | |||
7423 | ||||
7424 | if (D.isRedeclaration() && !Previous.empty()) { | |||
7425 | NamedDecl *Prev = Previous.getRepresentativeDecl(); | |||
7426 | checkDLLAttributeRedeclaration(*this, Prev, NewVD, IsMemberSpecialization, | |||
7427 | D.isFunctionDefinition()); | |||
7428 | } | |||
7429 | ||||
7430 | if (NewTemplate) { | |||
7431 | if (NewVD->isInvalidDecl()) | |||
7432 | NewTemplate->setInvalidDecl(); | |||
7433 | ActOnDocumentableDecl(NewTemplate); | |||
7434 | return NewTemplate; | |||
7435 | } | |||
7436 | ||||
7437 | if (IsMemberSpecialization && !NewVD->isInvalidDecl()) | |||
7438 | CompleteMemberSpecialization(NewVD, Previous); | |||
7439 | ||||
7440 | return NewVD; | |||
7441 | } | |||
7442 | ||||
7443 | /// Enum describing the %select options in diag::warn_decl_shadow. | |||
7444 | enum ShadowedDeclKind { | |||
7445 | SDK_Local, | |||
7446 | SDK_Global, | |||
7447 | SDK_StaticMember, | |||
7448 | SDK_Field, | |||
7449 | SDK_Typedef, | |||
7450 | SDK_Using | |||
7451 | }; | |||
7452 | ||||
7453 | /// Determine what kind of declaration we're shadowing. | |||
7454 | static ShadowedDeclKind computeShadowedDeclKind(const NamedDecl *ShadowedDecl, | |||
7455 | const DeclContext *OldDC) { | |||
7456 | if (isa<TypeAliasDecl>(ShadowedDecl)) | |||
7457 | return SDK_Using; | |||
7458 | else if (isa<TypedefDecl>(ShadowedDecl)) | |||
7459 | return SDK_Typedef; | |||
7460 | else if (isa<RecordDecl>(OldDC)) | |||
7461 | return isa<FieldDecl>(ShadowedDecl) ? SDK_Field : SDK_StaticMember; | |||
7462 | ||||
7463 | return OldDC->isFileContext() ? SDK_Global : SDK_Local; | |||
7464 | } | |||
7465 | ||||
7466 | /// Return the location of the capture if the given lambda captures the given | |||
7467 | /// variable \p VD, or an invalid source location otherwise. | |||
7468 | static SourceLocation getCaptureLocation(const LambdaScopeInfo *LSI, | |||
7469 | const VarDecl *VD) { | |||
7470 | for (const Capture &Capture : LSI->Captures) { | |||
7471 | if (Capture.isVariableCapture() && Capture.getVariable() == VD) | |||
7472 | return Capture.getLocation(); | |||
7473 | } | |||
7474 | return SourceLocation(); | |||
7475 | } | |||
7476 | ||||
7477 | static bool shouldWarnIfShadowedDecl(const DiagnosticsEngine &Diags, | |||
7478 | const LookupResult &R) { | |||
7479 | // Only diagnose if we're shadowing an unambiguous field or variable. | |||
7480 | if (R.getResultKind() != LookupResult::Found) | |||
7481 | return false; | |||
7482 | ||||
7483 | // Return false if warning is ignored. | |||
7484 | return !Diags.isIgnored(diag::warn_decl_shadow, R.getNameLoc()); | |||
7485 | } | |||
7486 | ||||
7487 | /// Return the declaration shadowed by the given variable \p D, or null | |||
7488 | /// if it doesn't shadow any declaration or shadowing warnings are disabled. | |||
7489 | NamedDecl *Sema::getShadowedDeclaration(const VarDecl *D, | |||
7490 | const LookupResult &R) { | |||
7491 | if (!shouldWarnIfShadowedDecl(Diags, R)) | |||
7492 | return nullptr; | |||
7493 | ||||
7494 | // Don't diagnose declarations at file scope. | |||
7495 | if (D->hasGlobalStorage()) | |||
7496 | return nullptr; | |||
7497 | ||||
7498 | NamedDecl *ShadowedDecl = R.getFoundDecl(); | |||
7499 | return isa<VarDecl>(ShadowedDecl) || isa<FieldDecl>(ShadowedDecl) | |||
7500 | ? ShadowedDecl | |||
7501 | : nullptr; | |||
7502 | } | |||
7503 | ||||
7504 | /// Return the declaration shadowed by the given typedef \p D, or null | |||
7505 | /// if it doesn't shadow any declaration or shadowing warnings are disabled. | |||
7506 | NamedDecl *Sema::getShadowedDeclaration(const TypedefNameDecl *D, | |||
7507 | const LookupResult &R) { | |||
7508 | // Don't warn if typedef declaration is part of a class | |||
7509 | if (D->getDeclContext()->isRecord()) | |||
7510 | return nullptr; | |||
7511 | ||||
7512 | if (!shouldWarnIfShadowedDecl(Diags, R)) | |||
7513 | return nullptr; | |||
7514 | ||||
7515 | NamedDecl *ShadowedDecl = R.getFoundDecl(); | |||
7516 | return isa<TypedefNameDecl>(ShadowedDecl) ? ShadowedDecl : nullptr; | |||
7517 | } | |||
7518 | ||||
7519 | /// Diagnose variable or built-in function shadowing. Implements | |||
7520 | /// -Wshadow. | |||
7521 | /// | |||
7522 | /// This method is called whenever a VarDecl is added to a "useful" | |||
7523 | /// scope. | |||
7524 | /// | |||
7525 | /// \param ShadowedDecl the declaration that is shadowed by the given variable | |||
7526 | /// \param R the lookup of the name | |||
7527 | /// | |||
7528 | void Sema::CheckShadow(NamedDecl *D, NamedDecl *ShadowedDecl, | |||
7529 | const LookupResult &R) { | |||
7530 | DeclContext *NewDC = D->getDeclContext(); | |||
7531 | ||||
7532 | if (FieldDecl *FD = dyn_cast<FieldDecl>(ShadowedDecl)) { | |||
7533 | // Fields are not shadowed by variables in C++ static methods. | |||
7534 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(NewDC)) | |||
7535 | if (MD->isStatic()) | |||
7536 | return; | |||
7537 | ||||
7538 | // Fields shadowed by constructor parameters are a special case. Usually | |||
7539 | // the constructor initializes the field with the parameter. | |||
7540 | if (isa<CXXConstructorDecl>(NewDC)) | |||
7541 | if (const auto PVD = dyn_cast<ParmVarDecl>(D)) { | |||
7542 | // Remember that this was shadowed so we can either warn about its | |||
7543 | // modification or its existence depending on warning settings. | |||
7544 | ShadowingDecls.insert({PVD->getCanonicalDecl(), FD}); | |||
7545 | return; | |||
7546 | } | |||
7547 | } | |||
7548 | ||||
7549 | if (VarDecl *shadowedVar = dyn_cast<VarDecl>(ShadowedDecl)) | |||
7550 | if (shadowedVar->isExternC()) { | |||
7551 | // For shadowing external vars, make sure that we point to the global | |||
7552 | // declaration, not a locally scoped extern declaration. | |||
7553 | for (auto I : shadowedVar->redecls()) | |||
7554 | if (I->isFileVarDecl()) { | |||
7555 | ShadowedDecl = I; | |||
7556 | break; | |||
7557 | } | |||
7558 | } | |||
7559 | ||||
7560 | DeclContext *OldDC = ShadowedDecl->getDeclContext()->getRedeclContext(); | |||
7561 | ||||
7562 | unsigned WarningDiag = diag::warn_decl_shadow; | |||
7563 | SourceLocation CaptureLoc; | |||
7564 | if (isa<VarDecl>(D) && isa<VarDecl>(ShadowedDecl) && NewDC && | |||
7565 | isa<CXXMethodDecl>(NewDC)) { | |||
7566 | if (const auto *RD = dyn_cast<CXXRecordDecl>(NewDC->getParent())) { | |||
7567 | if (RD->isLambda() && OldDC->Encloses(NewDC->getLexicalParent())) { | |||
7568 | if (RD->getLambdaCaptureDefault() == LCD_None) { | |||
7569 | // Try to avoid warnings for lambdas with an explicit capture list. | |||
7570 | const auto *LSI = cast<LambdaScopeInfo>(getCurFunction()); | |||
7571 | // Warn only when the lambda captures the shadowed decl explicitly. | |||
7572 | CaptureLoc = getCaptureLocation(LSI, cast<VarDecl>(ShadowedDecl)); | |||
7573 | if (CaptureLoc.isInvalid()) | |||
7574 | WarningDiag = diag::warn_decl_shadow_uncaptured_local; | |||
7575 | } else { | |||
7576 | // Remember that this was shadowed so we can avoid the warning if the | |||
7577 | // shadowed decl isn't captured and the warning settings allow it. | |||
7578 | cast<LambdaScopeInfo>(getCurFunction()) | |||
7579 | ->ShadowingDecls.push_back( | |||
7580 | {cast<VarDecl>(D), cast<VarDecl>(ShadowedDecl)}); | |||
7581 | return; | |||
7582 | } | |||
7583 | } | |||
7584 | ||||
7585 | if (cast<VarDecl>(ShadowedDecl)->hasLocalStorage()) { | |||
7586 | // A variable can't shadow a local variable in an enclosing scope, if | |||
7587 | // they are separated by a non-capturing declaration context. | |||
7588 | for (DeclContext *ParentDC = NewDC; | |||
7589 | ParentDC && !ParentDC->Equals(OldDC); | |||
7590 | ParentDC = getLambdaAwareParentOfDeclContext(ParentDC)) { | |||
7591 | // Only block literals, captured statements, and lambda expressions | |||
7592 | // can capture; other scopes don't. | |||
7593 | if (!isa<BlockDecl>(ParentDC) && !isa<CapturedDecl>(ParentDC) && | |||
7594 | !isLambdaCallOperator(ParentDC)) { | |||
7595 | return; | |||
7596 | } | |||
7597 | } | |||
7598 | } | |||
7599 | } | |||
7600 | } | |||
7601 | ||||
7602 | // Only warn about certain kinds of shadowing for class members. | |||
7603 | if (NewDC && NewDC->isRecord()) { | |||
7604 | // In particular, don't warn about shadowing non-class members. | |||
7605 | if (!OldDC->isRecord()) | |||
7606 | return; | |||
7607 | ||||
7608 | // TODO: should we warn about static data members shadowing | |||
7609 | // static data members from base classes? | |||
7610 | ||||
7611 | // TODO: don't diagnose for inaccessible shadowed members. | |||
7612 | // This is hard to do perfectly because we might friend the | |||
7613 | // shadowing context, but that's just a false negative. | |||
7614 | } | |||
7615 | ||||
7616 | ||||
7617 | DeclarationName Name = R.getLookupName(); | |||
7618 | ||||
7619 | // Emit warning and note. | |||
7620 | if (getSourceManager().isInSystemMacro(R.getNameLoc())) | |||
7621 | return; | |||
7622 | ShadowedDeclKind Kind = computeShadowedDeclKind(ShadowedDecl, OldDC); | |||
7623 | Diag(R.getNameLoc(), WarningDiag) << Name << Kind << OldDC; | |||
7624 | if (!CaptureLoc.isInvalid()) | |||
7625 | Diag(CaptureLoc, diag::note_var_explicitly_captured_here) | |||
7626 | << Name << /*explicitly*/ 1; | |||
7627 | Diag(ShadowedDecl->getLocation(), diag::note_previous_declaration); | |||
7628 | } | |||
7629 | ||||
7630 | /// Diagnose shadowing for variables shadowed in the lambda record \p LambdaRD | |||
7631 | /// when these variables are captured by the lambda. | |||
7632 | void Sema::DiagnoseShadowingLambdaDecls(const LambdaScopeInfo *LSI) { | |||
7633 | for (const auto &Shadow : LSI->ShadowingDecls) { | |||
7634 | const VarDecl *ShadowedDecl = Shadow.ShadowedDecl; | |||
7635 | // Try to avoid the warning when the shadowed decl isn't captured. | |||
7636 | SourceLocation CaptureLoc = getCaptureLocation(LSI, ShadowedDecl); | |||
7637 | const DeclContext *OldDC = ShadowedDecl->getDeclContext(); | |||
7638 | Diag(Shadow.VD->getLocation(), CaptureLoc.isInvalid() | |||
7639 | ? diag::warn_decl_shadow_uncaptured_local | |||
7640 | : diag::warn_decl_shadow) | |||
7641 | << Shadow.VD->getDeclName() | |||
7642 | << computeShadowedDeclKind(ShadowedDecl, OldDC) << OldDC; | |||
7643 | if (!CaptureLoc.isInvalid()) | |||
7644 | Diag(CaptureLoc, diag::note_var_explicitly_captured_here) | |||
7645 | << Shadow.VD->getDeclName() << /*explicitly*/ 0; | |||
7646 | Diag(ShadowedDecl->getLocation(), diag::note_previous_declaration); | |||
7647 | } | |||
7648 | } | |||
7649 | ||||
7650 | /// Check -Wshadow without the advantage of a previous lookup. | |||
7651 | void Sema::CheckShadow(Scope *S, VarDecl *D) { | |||
7652 | if (Diags.isIgnored(diag::warn_decl_shadow, D->getLocation())) | |||
7653 | return; | |||
7654 | ||||
7655 | LookupResult R(*this, D->getDeclName(), D->getLocation(), | |||
7656 | Sema::LookupOrdinaryName, Sema::ForVisibleRedeclaration); | |||
7657 | LookupName(R, S); | |||
7658 | if (NamedDecl *ShadowedDecl = getShadowedDeclaration(D, R)) | |||
7659 | CheckShadow(D, ShadowedDecl, R); | |||
7660 | } | |||
7661 | ||||
7662 | /// Check if 'E', which is an expression that is about to be modified, refers | |||
7663 | /// to a constructor parameter that shadows a field. | |||
7664 | void Sema::CheckShadowingDeclModification(Expr *E, SourceLocation Loc) { | |||
7665 | // Quickly ignore expressions that can't be shadowing ctor parameters. | |||
7666 | if (!getLangOpts().CPlusPlus || ShadowingDecls.empty()) | |||
7667 | return; | |||
7668 | E = E->IgnoreParenImpCasts(); | |||
7669 | auto *DRE = dyn_cast<DeclRefExpr>(E); | |||
7670 | if (!DRE) | |||
7671 | return; | |||
7672 | const NamedDecl *D = cast<NamedDecl>(DRE->getDecl()->getCanonicalDecl()); | |||
7673 | auto I = ShadowingDecls.find(D); | |||
7674 | if (I == ShadowingDecls.end()) | |||
7675 | return; | |||
7676 | const NamedDecl *ShadowedDecl = I->second; | |||
7677 | const DeclContext *OldDC = ShadowedDecl->getDeclContext(); | |||
7678 | Diag(Loc, diag::warn_modifying_shadowing_decl) << D << OldDC; | |||
7679 | Diag(D->getLocation(), diag::note_var_declared_here) << D; | |||
7680 | Diag(ShadowedDecl->getLocation(), diag::note_previous_declaration); | |||
7681 | ||||
7682 | // Avoid issuing multiple warnings about the same decl. | |||
7683 | ShadowingDecls.erase(I); | |||
7684 | } | |||
7685 | ||||
7686 | /// Check for conflict between this global or extern "C" declaration and | |||
7687 | /// previous global or extern "C" declarations. This is only used in C++. | |||
7688 | template<typename T> | |||
7689 | static bool checkGlobalOrExternCConflict( | |||
7690 | Sema &S, const T *ND, bool IsGlobal, LookupResult &Previous) { | |||
7691 | assert(S.getLangOpts().CPlusPlus && "only C++ has extern \"C\"")((S.getLangOpts().CPlusPlus && "only C++ has extern \"C\"" ) ? static_cast<void> (0) : __assert_fail ("S.getLangOpts().CPlusPlus && \"only C++ has extern \\\"C\\\"\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7691, __PRETTY_FUNCTION__)); | |||
7692 | NamedDecl *Prev = S.findLocallyScopedExternCDecl(ND->getDeclName()); | |||
7693 | ||||
7694 | if (!Prev && IsGlobal && !isIncompleteDeclExternC(S, ND)) { | |||
7695 | // The common case: this global doesn't conflict with any extern "C" | |||
7696 | // declaration. | |||
7697 | return false; | |||
7698 | } | |||
7699 | ||||
7700 | if (Prev) { | |||
7701 | if (!IsGlobal || isIncompleteDeclExternC(S, ND)) { | |||
7702 | // Both the old and new declarations have C language linkage. This is a | |||
7703 | // redeclaration. | |||
7704 | Previous.clear(); | |||
7705 | Previous.addDecl(Prev); | |||
7706 | return true; | |||
7707 | } | |||
7708 | ||||
7709 | // This is a global, non-extern "C" declaration, and there is a previous | |||
7710 | // non-global extern "C" declaration. Diagnose if this is a variable | |||
7711 | // declaration. | |||
7712 | if (!isa<VarDecl>(ND)) | |||
7713 | return false; | |||
7714 | } else { | |||
7715 | // The declaration is extern "C". Check for any declaration in the | |||
7716 | // translation unit which might conflict. | |||
7717 | if (IsGlobal) { | |||
7718 | // We have already performed the lookup into the translation unit. | |||
7719 | IsGlobal = false; | |||
7720 | for (LookupResult::iterator I = Previous.begin(), E = Previous.end(); | |||
7721 | I != E; ++I) { | |||
7722 | if (isa<VarDecl>(*I)) { | |||
7723 | Prev = *I; | |||
7724 | break; | |||
7725 | } | |||
7726 | } | |||
7727 | } else { | |||
7728 | DeclContext::lookup_result R = | |||
7729 | S.Context.getTranslationUnitDecl()->lookup(ND->getDeclName()); | |||
7730 | for (DeclContext::lookup_result::iterator I = R.begin(), E = R.end(); | |||
7731 | I != E; ++I) { | |||
7732 | if (isa<VarDecl>(*I)) { | |||
7733 | Prev = *I; | |||
7734 | break; | |||
7735 | } | |||
7736 | // FIXME: If we have any other entity with this name in global scope, | |||
7737 | // the declaration is ill-formed, but that is a defect: it breaks the | |||
7738 | // 'stat' hack, for instance. Only variables can have mangled name | |||
7739 | // clashes with extern "C" declarations, so only they deserve a | |||
7740 | // diagnostic. | |||
7741 | } | |||
7742 | } | |||
7743 | ||||
7744 | if (!Prev) | |||
7745 | return false; | |||
7746 | } | |||
7747 | ||||
7748 | // Use the first declaration's location to ensure we point at something which | |||
7749 | // is lexically inside an extern "C" linkage-spec. | |||
7750 | assert(Prev && "should have found a previous declaration to diagnose")((Prev && "should have found a previous declaration to diagnose" ) ? static_cast<void> (0) : __assert_fail ("Prev && \"should have found a previous declaration to diagnose\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7750, __PRETTY_FUNCTION__)); | |||
7751 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Prev)) | |||
7752 | Prev = FD->getFirstDecl(); | |||
7753 | else | |||
7754 | Prev = cast<VarDecl>(Prev)->getFirstDecl(); | |||
7755 | ||||
7756 | S.Diag(ND->getLocation(), diag::err_extern_c_global_conflict) | |||
7757 | << IsGlobal << ND; | |||
7758 | S.Diag(Prev->getLocation(), diag::note_extern_c_global_conflict) | |||
7759 | << IsGlobal; | |||
7760 | return false; | |||
7761 | } | |||
7762 | ||||
7763 | /// Apply special rules for handling extern "C" declarations. Returns \c true | |||
7764 | /// if we have found that this is a redeclaration of some prior entity. | |||
7765 | /// | |||
7766 | /// Per C++ [dcl.link]p6: | |||
7767 | /// Two declarations [for a function or variable] with C language linkage | |||
7768 | /// with the same name that appear in different scopes refer to the same | |||
7769 | /// [entity]. An entity with C language linkage shall not be declared with | |||
7770 | /// the same name as an entity in global scope. | |||
7771 | template<typename T> | |||
7772 | static bool checkForConflictWithNonVisibleExternC(Sema &S, const T *ND, | |||
7773 | LookupResult &Previous) { | |||
7774 | if (!S.getLangOpts().CPlusPlus) { | |||
7775 | // In C, when declaring a global variable, look for a corresponding 'extern' | |||
7776 | // variable declared in function scope. We don't need this in C++, because | |||
7777 | // we find local extern decls in the surrounding file-scope DeclContext. | |||
7778 | if (ND->getDeclContext()->getRedeclContext()->isTranslationUnit()) { | |||
7779 | if (NamedDecl *Prev = S.findLocallyScopedExternCDecl(ND->getDeclName())) { | |||
7780 | Previous.clear(); | |||
7781 | Previous.addDecl(Prev); | |||
7782 | return true; | |||
7783 | } | |||
7784 | } | |||
7785 | return false; | |||
7786 | } | |||
7787 | ||||
7788 | // A declaration in the translation unit can conflict with an extern "C" | |||
7789 | // declaration. | |||
7790 | if (ND->getDeclContext()->getRedeclContext()->isTranslationUnit()) | |||
7791 | return checkGlobalOrExternCConflict(S, ND, /*IsGlobal*/true, Previous); | |||
7792 | ||||
7793 | // An extern "C" declaration can conflict with a declaration in the | |||
7794 | // translation unit or can be a redeclaration of an extern "C" declaration | |||
7795 | // in another scope. | |||
7796 | if (isIncompleteDeclExternC(S,ND)) | |||
7797 | return checkGlobalOrExternCConflict(S, ND, /*IsGlobal*/false, Previous); | |||
7798 | ||||
7799 | // Neither global nor extern "C": nothing to do. | |||
7800 | return false; | |||
7801 | } | |||
7802 | ||||
7803 | void Sema::CheckVariableDeclarationType(VarDecl *NewVD) { | |||
7804 | // If the decl is already known invalid, don't check it. | |||
7805 | if (NewVD->isInvalidDecl()) | |||
7806 | return; | |||
7807 | ||||
7808 | QualType T = NewVD->getType(); | |||
7809 | ||||
7810 | // Defer checking an 'auto' type until its initializer is attached. | |||
7811 | if (T->isUndeducedType()) | |||
7812 | return; | |||
7813 | ||||
7814 | if (NewVD->hasAttrs()) | |||
7815 | CheckAlignasUnderalignment(NewVD); | |||
7816 | ||||
7817 | if (T->isObjCObjectType()) { | |||
7818 | Diag(NewVD->getLocation(), diag::err_statically_allocated_object) | |||
7819 | << FixItHint::CreateInsertion(NewVD->getLocation(), "*"); | |||
7820 | T = Context.getObjCObjectPointerType(T); | |||
7821 | NewVD->setType(T); | |||
7822 | } | |||
7823 | ||||
7824 | // Emit an error if an address space was applied to decl with local storage. | |||
7825 | // This includes arrays of objects with address space qualifiers, but not | |||
7826 | // automatic variables that point to other address spaces. | |||
7827 | // ISO/IEC TR 18037 S5.1.2 | |||
7828 | if (!getLangOpts().OpenCL && NewVD->hasLocalStorage() && | |||
7829 | T.getAddressSpace() != LangAS::Default) { | |||
7830 | Diag(NewVD->getLocation(), diag::err_as_qualified_auto_decl) << 0; | |||
7831 | NewVD->setInvalidDecl(); | |||
7832 | return; | |||
7833 | } | |||
7834 | ||||
7835 | // OpenCL v1.2 s6.8 - The static qualifier is valid only in program | |||
7836 | // scope. | |||
7837 | if (getLangOpts().OpenCLVersion == 120 && | |||
7838 | !getOpenCLOptions().isEnabled("cl_clang_storage_class_specifiers") && | |||
7839 | NewVD->isStaticLocal()) { | |||
7840 | Diag(NewVD->getLocation(), diag::err_static_function_scope); | |||
7841 | NewVD->setInvalidDecl(); | |||
7842 | return; | |||
7843 | } | |||
7844 | ||||
7845 | if (getLangOpts().OpenCL) { | |||
7846 | // OpenCL v2.0 s6.12.5 - The __block storage type is not supported. | |||
7847 | if (NewVD->hasAttr<BlocksAttr>()) { | |||
7848 | Diag(NewVD->getLocation(), diag::err_opencl_block_storage_type); | |||
7849 | return; | |||
7850 | } | |||
7851 | ||||
7852 | if (T->isBlockPointerType()) { | |||
7853 | // OpenCL v2.0 s6.12.5 - Any block declaration must be const qualified and | |||
7854 | // can't use 'extern' storage class. | |||
7855 | if (!T.isConstQualified()) { | |||
7856 | Diag(NewVD->getLocation(), diag::err_opencl_invalid_block_declaration) | |||
7857 | << 0 /*const*/; | |||
7858 | NewVD->setInvalidDecl(); | |||
7859 | return; | |||
7860 | } | |||
7861 | if (NewVD->hasExternalStorage()) { | |||
7862 | Diag(NewVD->getLocation(), diag::err_opencl_extern_block_declaration); | |||
7863 | NewVD->setInvalidDecl(); | |||
7864 | return; | |||
7865 | } | |||
7866 | } | |||
7867 | // OpenCL C v1.2 s6.5 - All program scope variables must be declared in the | |||
7868 | // __constant address space. | |||
7869 | // OpenCL C v2.0 s6.5.1 - Variables defined at program scope and static | |||
7870 | // variables inside a function can also be declared in the global | |||
7871 | // address space. | |||
7872 | // C++ for OpenCL inherits rule from OpenCL C v2.0. | |||
7873 | // FIXME: Adding local AS in C++ for OpenCL might make sense. | |||
7874 | if (NewVD->isFileVarDecl() || NewVD->isStaticLocal() || | |||
7875 | NewVD->hasExternalStorage()) { | |||
7876 | if (!T->isSamplerT() && | |||
7877 | !T->isDependentType() && | |||
7878 | !(T.getAddressSpace() == LangAS::opencl_constant || | |||
7879 | (T.getAddressSpace() == LangAS::opencl_global && | |||
7880 | (getLangOpts().OpenCLVersion == 200 || | |||
7881 | getLangOpts().OpenCLCPlusPlus)))) { | |||
7882 | int Scope = NewVD->isStaticLocal() | NewVD->hasExternalStorage() << 1; | |||
7883 | if (getLangOpts().OpenCLVersion == 200 || getLangOpts().OpenCLCPlusPlus) | |||
7884 | Diag(NewVD->getLocation(), diag::err_opencl_global_invalid_addr_space) | |||
7885 | << Scope << "global or constant"; | |||
7886 | else | |||
7887 | Diag(NewVD->getLocation(), diag::err_opencl_global_invalid_addr_space) | |||
7888 | << Scope << "constant"; | |||
7889 | NewVD->setInvalidDecl(); | |||
7890 | return; | |||
7891 | } | |||
7892 | } else { | |||
7893 | if (T.getAddressSpace() == LangAS::opencl_global) { | |||
7894 | Diag(NewVD->getLocation(), diag::err_opencl_function_variable) | |||
7895 | << 1 /*is any function*/ << "global"; | |||
7896 | NewVD->setInvalidDecl(); | |||
7897 | return; | |||
7898 | } | |||
7899 | if (T.getAddressSpace() == LangAS::opencl_constant || | |||
7900 | T.getAddressSpace() == LangAS::opencl_local) { | |||
7901 | FunctionDecl *FD = getCurFunctionDecl(); | |||
7902 | // OpenCL v1.1 s6.5.2 and s6.5.3: no local or constant variables | |||
7903 | // in functions. | |||
7904 | if (FD && !FD->hasAttr<OpenCLKernelAttr>()) { | |||
7905 | if (T.getAddressSpace() == LangAS::opencl_constant) | |||
7906 | Diag(NewVD->getLocation(), diag::err_opencl_function_variable) | |||
7907 | << 0 /*non-kernel only*/ << "constant"; | |||
7908 | else | |||
7909 | Diag(NewVD->getLocation(), diag::err_opencl_function_variable) | |||
7910 | << 0 /*non-kernel only*/ << "local"; | |||
7911 | NewVD->setInvalidDecl(); | |||
7912 | return; | |||
7913 | } | |||
7914 | // OpenCL v2.0 s6.5.2 and s6.5.3: local and constant variables must be | |||
7915 | // in the outermost scope of a kernel function. | |||
7916 | if (FD && FD->hasAttr<OpenCLKernelAttr>()) { | |||
7917 | if (!getCurScope()->isFunctionScope()) { | |||
7918 | if (T.getAddressSpace() == LangAS::opencl_constant) | |||
7919 | Diag(NewVD->getLocation(), diag::err_opencl_addrspace_scope) | |||
7920 | << "constant"; | |||
7921 | else | |||
7922 | Diag(NewVD->getLocation(), diag::err_opencl_addrspace_scope) | |||
7923 | << "local"; | |||
7924 | NewVD->setInvalidDecl(); | |||
7925 | return; | |||
7926 | } | |||
7927 | } | |||
7928 | } else if (T.getAddressSpace() != LangAS::opencl_private && | |||
7929 | // If we are parsing a template we didn't deduce an addr | |||
7930 | // space yet. | |||
7931 | T.getAddressSpace() != LangAS::Default) { | |||
7932 | // Do not allow other address spaces on automatic variable. | |||
7933 | Diag(NewVD->getLocation(), diag::err_as_qualified_auto_decl) << 1; | |||
7934 | NewVD->setInvalidDecl(); | |||
7935 | return; | |||
7936 | } | |||
7937 | } | |||
7938 | } | |||
7939 | ||||
7940 | if (NewVD->hasLocalStorage() && T.isObjCGCWeak() | |||
7941 | && !NewVD->hasAttr<BlocksAttr>()) { | |||
7942 | if (getLangOpts().getGC() != LangOptions::NonGC) | |||
7943 | Diag(NewVD->getLocation(), diag::warn_gc_attribute_weak_on_local); | |||
7944 | else { | |||
7945 | assert(!getLangOpts().ObjCAutoRefCount)((!getLangOpts().ObjCAutoRefCount) ? static_cast<void> ( 0) : __assert_fail ("!getLangOpts().ObjCAutoRefCount", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 7945, __PRETTY_FUNCTION__)); | |||
7946 | Diag(NewVD->getLocation(), diag::warn_attribute_weak_on_local); | |||
7947 | } | |||
7948 | } | |||
7949 | ||||
7950 | bool isVM = T->isVariablyModifiedType(); | |||
7951 | if (isVM || NewVD->hasAttr<CleanupAttr>() || | |||
7952 | NewVD->hasAttr<BlocksAttr>()) | |||
7953 | setFunctionHasBranchProtectedScope(); | |||
7954 | ||||
7955 | if ((isVM && NewVD->hasLinkage()) || | |||
7956 | (T->isVariableArrayType() && NewVD->hasGlobalStorage())) { | |||
7957 | bool SizeIsNegative; | |||
7958 | llvm::APSInt Oversized; | |||
7959 | TypeSourceInfo *FixedTInfo = TryToFixInvalidVariablyModifiedTypeSourceInfo( | |||
7960 | NewVD->getTypeSourceInfo(), Context, SizeIsNegative, Oversized); | |||
7961 | QualType FixedT; | |||
7962 | if (FixedTInfo && T == NewVD->getTypeSourceInfo()->getType()) | |||
7963 | FixedT = FixedTInfo->getType(); | |||
7964 | else if (FixedTInfo) { | |||
7965 | // Type and type-as-written are canonically different. We need to fix up | |||
7966 | // both types separately. | |||
7967 | FixedT = TryToFixInvalidVariablyModifiedType(T, Context, SizeIsNegative, | |||
7968 | Oversized); | |||
7969 | } | |||
7970 | if ((!FixedTInfo || FixedT.isNull()) && T->isVariableArrayType()) { | |||
7971 | const VariableArrayType *VAT = Context.getAsVariableArrayType(T); | |||
7972 | // FIXME: This won't give the correct result for | |||
7973 | // int a[10][n]; | |||
7974 | SourceRange SizeRange = VAT->getSizeExpr()->getSourceRange(); | |||
7975 | ||||
7976 | if (NewVD->isFileVarDecl()) | |||
7977 | Diag(NewVD->getLocation(), diag::err_vla_decl_in_file_scope) | |||
7978 | << SizeRange; | |||
7979 | else if (NewVD->isStaticLocal()) | |||
7980 | Diag(NewVD->getLocation(), diag::err_vla_decl_has_static_storage) | |||
7981 | << SizeRange; | |||
7982 | else | |||
7983 | Diag(NewVD->getLocation(), diag::err_vla_decl_has_extern_linkage) | |||
7984 | << SizeRange; | |||
7985 | NewVD->setInvalidDecl(); | |||
7986 | return; | |||
7987 | } | |||
7988 | ||||
7989 | if (!FixedTInfo) { | |||
7990 | if (NewVD->isFileVarDecl()) | |||
7991 | Diag(NewVD->getLocation(), diag::err_vm_decl_in_file_scope); | |||
7992 | else | |||
7993 | Diag(NewVD->getLocation(), diag::err_vm_decl_has_extern_linkage); | |||
7994 | NewVD->setInvalidDecl(); | |||
7995 | return; | |||
7996 | } | |||
7997 | ||||
7998 | Diag(NewVD->getLocation(), diag::ext_vla_folded_to_constant); | |||
7999 | NewVD->setType(FixedT); | |||
8000 | NewVD->setTypeSourceInfo(FixedTInfo); | |||
8001 | } | |||
8002 | ||||
8003 | if (T->isVoidType()) { | |||
8004 | // C++98 [dcl.stc]p5: The extern specifier can be applied only to the names | |||
8005 | // of objects and functions. | |||
8006 | if (NewVD->isThisDeclarationADefinition() || getLangOpts().CPlusPlus) { | |||
8007 | Diag(NewVD->getLocation(), diag::err_typecheck_decl_incomplete_type) | |||
8008 | << T; | |||
8009 | NewVD->setInvalidDecl(); | |||
8010 | return; | |||
8011 | } | |||
8012 | } | |||
8013 | ||||
8014 | if (!NewVD->hasLocalStorage() && NewVD->hasAttr<BlocksAttr>()) { | |||
8015 | Diag(NewVD->getLocation(), diag::err_block_on_nonlocal); | |||
8016 | NewVD->setInvalidDecl(); | |||
8017 | return; | |||
8018 | } | |||
8019 | ||||
8020 | if (!NewVD->hasLocalStorage() && T->isSizelessType()) { | |||
8021 | Diag(NewVD->getLocation(), diag::err_sizeless_nonlocal) << T; | |||
8022 | NewVD->setInvalidDecl(); | |||
8023 | return; | |||
8024 | } | |||
8025 | ||||
8026 | if (isVM && NewVD->hasAttr<BlocksAttr>()) { | |||
8027 | Diag(NewVD->getLocation(), diag::err_block_on_vm); | |||
8028 | NewVD->setInvalidDecl(); | |||
8029 | return; | |||
8030 | } | |||
8031 | ||||
8032 | if (NewVD->isConstexpr() && !T->isDependentType() && | |||
8033 | RequireLiteralType(NewVD->getLocation(), T, | |||
8034 | diag::err_constexpr_var_non_literal)) { | |||
8035 | NewVD->setInvalidDecl(); | |||
8036 | return; | |||
8037 | } | |||
8038 | ||||
8039 | // PPC MMA non-pointer types are not allowed as non-local variable types. | |||
8040 | if (Context.getTargetInfo().getTriple().isPPC64() && | |||
8041 | !NewVD->isLocalVarDecl() && | |||
8042 | CheckPPCMMAType(T, NewVD->getLocation())) { | |||
8043 | NewVD->setInvalidDecl(); | |||
8044 | return; | |||
8045 | } | |||
8046 | } | |||
8047 | ||||
8048 | /// Perform semantic checking on a newly-created variable | |||
8049 | /// declaration. | |||
8050 | /// | |||
8051 | /// This routine performs all of the type-checking required for a | |||
8052 | /// variable declaration once it has been built. It is used both to | |||
8053 | /// check variables after they have been parsed and their declarators | |||
8054 | /// have been translated into a declaration, and to check variables | |||
8055 | /// that have been instantiated from a template. | |||
8056 | /// | |||
8057 | /// Sets NewVD->isInvalidDecl() if an error was encountered. | |||
8058 | /// | |||
8059 | /// Returns true if the variable declaration is a redeclaration. | |||
8060 | bool Sema::CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous) { | |||
8061 | CheckVariableDeclarationType(NewVD); | |||
8062 | ||||
8063 | // If the decl is already known invalid, don't check it. | |||
8064 | if (NewVD->isInvalidDecl()) | |||
8065 | return false; | |||
8066 | ||||
8067 | // If we did not find anything by this name, look for a non-visible | |||
8068 | // extern "C" declaration with the same name. | |||
8069 | if (Previous.empty() && | |||
8070 | checkForConflictWithNonVisibleExternC(*this, NewVD, Previous)) | |||
8071 | Previous.setShadowed(); | |||
8072 | ||||
8073 | if (!Previous.empty()) { | |||
8074 | MergeVarDecl(NewVD, Previous); | |||
8075 | return true; | |||
8076 | } | |||
8077 | return false; | |||
8078 | } | |||
8079 | ||||
8080 | namespace { | |||
8081 | struct FindOverriddenMethod { | |||
8082 | Sema *S; | |||
8083 | CXXMethodDecl *Method; | |||
8084 | ||||
8085 | /// Member lookup function that determines whether a given C++ | |||
8086 | /// method overrides a method in a base class, to be used with | |||
8087 | /// CXXRecordDecl::lookupInBases(). | |||
8088 | bool operator()(const CXXBaseSpecifier *Specifier, CXXBasePath &Path) { | |||
8089 | RecordDecl *BaseRecord = | |||
8090 | Specifier->getType()->castAs<RecordType>()->getDecl(); | |||
8091 | ||||
8092 | DeclarationName Name = Method->getDeclName(); | |||
8093 | ||||
8094 | // FIXME: Do we care about other names here too? | |||
8095 | if (Name.getNameKind() == DeclarationName::CXXDestructorName) { | |||
8096 | // We really want to find the base class destructor here. | |||
8097 | QualType T = S->Context.getTypeDeclType(BaseRecord); | |||
8098 | CanQualType CT = S->Context.getCanonicalType(T); | |||
8099 | ||||
8100 | Name = S->Context.DeclarationNames.getCXXDestructorName(CT); | |||
8101 | } | |||
8102 | ||||
8103 | for (Path.Decls = BaseRecord->lookup(Name); !Path.Decls.empty(); | |||
8104 | Path.Decls = Path.Decls.slice(1)) { | |||
8105 | NamedDecl *D = Path.Decls.front(); | |||
8106 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(D)) { | |||
8107 | if (MD->isVirtual() && | |||
8108 | !S->IsOverload( | |||
8109 | Method, MD, /*UseMemberUsingDeclRules=*/false, | |||
8110 | /*ConsiderCudaAttrs=*/true, | |||
8111 | // C++2a [class.virtual]p2 does not consider requires clauses | |||
8112 | // when overriding. | |||
8113 | /*ConsiderRequiresClauses=*/false)) | |||
8114 | return true; | |||
8115 | } | |||
8116 | } | |||
8117 | ||||
8118 | return false; | |||
8119 | } | |||
8120 | }; | |||
8121 | } // end anonymous namespace | |||
8122 | ||||
8123 | /// AddOverriddenMethods - See if a method overrides any in the base classes, | |||
8124 | /// and if so, check that it's a valid override and remember it. | |||
8125 | bool Sema::AddOverriddenMethods(CXXRecordDecl *DC, CXXMethodDecl *MD) { | |||
8126 | // Look for methods in base classes that this method might override. | |||
8127 | CXXBasePaths Paths; | |||
8128 | FindOverriddenMethod FOM; | |||
8129 | FOM.Method = MD; | |||
8130 | FOM.S = this; | |||
8131 | bool AddedAny = false; | |||
8132 | if (DC->lookupInBases(FOM, Paths)) { | |||
8133 | for (auto *I : Paths.found_decls()) { | |||
8134 | if (CXXMethodDecl *OldMD = dyn_cast<CXXMethodDecl>(I)) { | |||
8135 | MD->addOverriddenMethod(OldMD->getCanonicalDecl()); | |||
8136 | if (!CheckOverridingFunctionReturnType(MD, OldMD) && | |||
8137 | !CheckOverridingFunctionAttributes(MD, OldMD) && | |||
8138 | !CheckOverridingFunctionExceptionSpec(MD, OldMD) && | |||
8139 | !CheckIfOverriddenFunctionIsMarkedFinal(MD, OldMD)) { | |||
8140 | AddedAny = true; | |||
8141 | } | |||
8142 | } | |||
8143 | } | |||
8144 | } | |||
8145 | ||||
8146 | return AddedAny; | |||
8147 | } | |||
8148 | ||||
8149 | namespace { | |||
8150 | // Struct for holding all of the extra arguments needed by | |||
8151 | // DiagnoseInvalidRedeclaration to call Sema::ActOnFunctionDeclarator. | |||
8152 | struct ActOnFDArgs { | |||
8153 | Scope *S; | |||
8154 | Declarator &D; | |||
8155 | MultiTemplateParamsArg TemplateParamLists; | |||
8156 | bool AddToScope; | |||
8157 | }; | |||
8158 | } // end anonymous namespace | |||
8159 | ||||
8160 | namespace { | |||
8161 | ||||
8162 | // Callback to only accept typo corrections that have a non-zero edit distance. | |||
8163 | // Also only accept corrections that have the same parent decl. | |||
8164 | class DifferentNameValidatorCCC final : public CorrectionCandidateCallback { | |||
8165 | public: | |||
8166 | DifferentNameValidatorCCC(ASTContext &Context, FunctionDecl *TypoFD, | |||
8167 | CXXRecordDecl *Parent) | |||
8168 | : Context(Context), OriginalFD(TypoFD), | |||
8169 | ExpectedParent(Parent ? Parent->getCanonicalDecl() : nullptr) {} | |||
8170 | ||||
8171 | bool ValidateCandidate(const TypoCorrection &candidate) override { | |||
8172 | if (candidate.getEditDistance() == 0) | |||
8173 | return false; | |||
8174 | ||||
8175 | SmallVector<unsigned, 1> MismatchedParams; | |||
8176 | for (TypoCorrection::const_decl_iterator CDecl = candidate.begin(), | |||
8177 | CDeclEnd = candidate.end(); | |||
8178 | CDecl != CDeclEnd; ++CDecl) { | |||
8179 | FunctionDecl *FD = dyn_cast<FunctionDecl>(*CDecl); | |||
8180 | ||||
8181 | if (FD && !FD->hasBody() && | |||
8182 | hasSimilarParameters(Context, FD, OriginalFD, MismatchedParams)) { | |||
8183 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) { | |||
8184 | CXXRecordDecl *Parent = MD->getParent(); | |||
8185 | if (Parent && Parent->getCanonicalDecl() == ExpectedParent) | |||
8186 | return true; | |||
8187 | } else if (!ExpectedParent) { | |||
8188 | return true; | |||
8189 | } | |||
8190 | } | |||
8191 | } | |||
8192 | ||||
8193 | return false; | |||
8194 | } | |||
8195 | ||||
8196 | std::unique_ptr<CorrectionCandidateCallback> clone() override { | |||
8197 | return std::make_unique<DifferentNameValidatorCCC>(*this); | |||
8198 | } | |||
8199 | ||||
8200 | private: | |||
8201 | ASTContext &Context; | |||
8202 | FunctionDecl *OriginalFD; | |||
8203 | CXXRecordDecl *ExpectedParent; | |||
8204 | }; | |||
8205 | ||||
8206 | } // end anonymous namespace | |||
8207 | ||||
8208 | void Sema::MarkTypoCorrectedFunctionDefinition(const NamedDecl *F) { | |||
8209 | TypoCorrectedFunctionDefinitions.insert(F); | |||
8210 | } | |||
8211 | ||||
8212 | /// Generate diagnostics for an invalid function redeclaration. | |||
8213 | /// | |||
8214 | /// This routine handles generating the diagnostic messages for an invalid | |||
8215 | /// function redeclaration, including finding possible similar declarations | |||
8216 | /// or performing typo correction if there are no previous declarations with | |||
8217 | /// the same name. | |||
8218 | /// | |||
8219 | /// Returns a NamedDecl iff typo correction was performed and substituting in | |||
8220 | /// the new declaration name does not cause new errors. | |||
8221 | static NamedDecl *DiagnoseInvalidRedeclaration( | |||
8222 | Sema &SemaRef, LookupResult &Previous, FunctionDecl *NewFD, | |||
8223 | ActOnFDArgs &ExtraArgs, bool IsLocalFriend, Scope *S) { | |||
8224 | DeclarationName Name = NewFD->getDeclName(); | |||
8225 | DeclContext *NewDC = NewFD->getDeclContext(); | |||
8226 | SmallVector<unsigned, 1> MismatchedParams; | |||
8227 | SmallVector<std::pair<FunctionDecl *, unsigned>, 1> NearMatches; | |||
8228 | TypoCorrection Correction; | |||
8229 | bool IsDefinition = ExtraArgs.D.isFunctionDefinition(); | |||
8230 | unsigned DiagMsg = | |||
8231 | IsLocalFriend ? diag::err_no_matching_local_friend : | |||
8232 | NewFD->getFriendObjectKind() ? diag::err_qualified_friend_no_match : | |||
8233 | diag::err_member_decl_does_not_match; | |||
8234 | LookupResult Prev(SemaRef, Name, NewFD->getLocation(), | |||
8235 | IsLocalFriend ? Sema::LookupLocalFriendName | |||
8236 | : Sema::LookupOrdinaryName, | |||
8237 | Sema::ForVisibleRedeclaration); | |||
8238 | ||||
8239 | NewFD->setInvalidDecl(); | |||
8240 | if (IsLocalFriend) | |||
8241 | SemaRef.LookupName(Prev, S); | |||
8242 | else | |||
8243 | SemaRef.LookupQualifiedName(Prev, NewDC); | |||
8244 | assert(!Prev.isAmbiguous() &&((!Prev.isAmbiguous() && "Cannot have an ambiguity in previous-declaration lookup" ) ? static_cast<void> (0) : __assert_fail ("!Prev.isAmbiguous() && \"Cannot have an ambiguity in previous-declaration lookup\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8245, __PRETTY_FUNCTION__)) | |||
8245 | "Cannot have an ambiguity in previous-declaration lookup")((!Prev.isAmbiguous() && "Cannot have an ambiguity in previous-declaration lookup" ) ? static_cast<void> (0) : __assert_fail ("!Prev.isAmbiguous() && \"Cannot have an ambiguity in previous-declaration lookup\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8245, __PRETTY_FUNCTION__)); | |||
8246 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(NewFD); | |||
8247 | DifferentNameValidatorCCC CCC(SemaRef.Context, NewFD, | |||
8248 | MD ? MD->getParent() : nullptr); | |||
8249 | if (!Prev.empty()) { | |||
8250 | for (LookupResult::iterator Func = Prev.begin(), FuncEnd = Prev.end(); | |||
8251 | Func != FuncEnd; ++Func) { | |||
8252 | FunctionDecl *FD = dyn_cast<FunctionDecl>(*Func); | |||
8253 | if (FD && | |||
8254 | hasSimilarParameters(SemaRef.Context, FD, NewFD, MismatchedParams)) { | |||
8255 | // Add 1 to the index so that 0 can mean the mismatch didn't | |||
8256 | // involve a parameter | |||
8257 | unsigned ParamNum = | |||
8258 | MismatchedParams.empty() ? 0 : MismatchedParams.front() + 1; | |||
8259 | NearMatches.push_back(std::make_pair(FD, ParamNum)); | |||
8260 | } | |||
8261 | } | |||
8262 | // If the qualified name lookup yielded nothing, try typo correction | |||
8263 | } else if ((Correction = SemaRef.CorrectTypo( | |||
8264 | Prev.getLookupNameInfo(), Prev.getLookupKind(), S, | |||
8265 | &ExtraArgs.D.getCXXScopeSpec(), CCC, Sema::CTK_ErrorRecovery, | |||
8266 | IsLocalFriend ? nullptr : NewDC))) { | |||
8267 | // Set up everything for the call to ActOnFunctionDeclarator | |||
8268 | ExtraArgs.D.SetIdentifier(Correction.getCorrectionAsIdentifierInfo(), | |||
8269 | ExtraArgs.D.getIdentifierLoc()); | |||
8270 | Previous.clear(); | |||
8271 | Previous.setLookupName(Correction.getCorrection()); | |||
8272 | for (TypoCorrection::decl_iterator CDecl = Correction.begin(), | |||
8273 | CDeclEnd = Correction.end(); | |||
8274 | CDecl != CDeclEnd; ++CDecl) { | |||
8275 | FunctionDecl *FD = dyn_cast<FunctionDecl>(*CDecl); | |||
8276 | if (FD && !FD->hasBody() && | |||
8277 | hasSimilarParameters(SemaRef.Context, FD, NewFD, MismatchedParams)) { | |||
8278 | Previous.addDecl(FD); | |||
8279 | } | |||
8280 | } | |||
8281 | bool wasRedeclaration = ExtraArgs.D.isRedeclaration(); | |||
8282 | ||||
8283 | NamedDecl *Result; | |||
8284 | // Retry building the function declaration with the new previous | |||
8285 | // declarations, and with errors suppressed. | |||
8286 | { | |||
8287 | // Trap errors. | |||
8288 | Sema::SFINAETrap Trap(SemaRef); | |||
8289 | ||||
8290 | // TODO: Refactor ActOnFunctionDeclarator so that we can call only the | |||
8291 | // pieces need to verify the typo-corrected C++ declaration and hopefully | |||
8292 | // eliminate the need for the parameter pack ExtraArgs. | |||
8293 | Result = SemaRef.ActOnFunctionDeclarator( | |||
8294 | ExtraArgs.S, ExtraArgs.D, | |||
8295 | Correction.getCorrectionDecl()->getDeclContext(), | |||
8296 | NewFD->getTypeSourceInfo(), Previous, ExtraArgs.TemplateParamLists, | |||
8297 | ExtraArgs.AddToScope); | |||
8298 | ||||
8299 | if (Trap.hasErrorOccurred()) | |||
8300 | Result = nullptr; | |||
8301 | } | |||
8302 | ||||
8303 | if (Result) { | |||
8304 | // Determine which correction we picked. | |||
8305 | Decl *Canonical = Result->getCanonicalDecl(); | |||
8306 | for (LookupResult::iterator I = Previous.begin(), E = Previous.end(); | |||
8307 | I != E; ++I) | |||
8308 | if ((*I)->getCanonicalDecl() == Canonical) | |||
8309 | Correction.setCorrectionDecl(*I); | |||
8310 | ||||
8311 | // Let Sema know about the correction. | |||
8312 | SemaRef.MarkTypoCorrectedFunctionDefinition(Result); | |||
8313 | SemaRef.diagnoseTypo( | |||
8314 | Correction, | |||
8315 | SemaRef.PDiag(IsLocalFriend | |||
8316 | ? diag::err_no_matching_local_friend_suggest | |||
8317 | : diag::err_member_decl_does_not_match_suggest) | |||
8318 | << Name << NewDC << IsDefinition); | |||
8319 | return Result; | |||
8320 | } | |||
8321 | ||||
8322 | // Pretend the typo correction never occurred | |||
8323 | ExtraArgs.D.SetIdentifier(Name.getAsIdentifierInfo(), | |||
8324 | ExtraArgs.D.getIdentifierLoc()); | |||
8325 | ExtraArgs.D.setRedeclaration(wasRedeclaration); | |||
8326 | Previous.clear(); | |||
8327 | Previous.setLookupName(Name); | |||
8328 | } | |||
8329 | ||||
8330 | SemaRef.Diag(NewFD->getLocation(), DiagMsg) | |||
8331 | << Name << NewDC << IsDefinition << NewFD->getLocation(); | |||
8332 | ||||
8333 | bool NewFDisConst = false; | |||
8334 | if (CXXMethodDecl *NewMD = dyn_cast<CXXMethodDecl>(NewFD)) | |||
8335 | NewFDisConst = NewMD->isConst(); | |||
8336 | ||||
8337 | for (SmallVectorImpl<std::pair<FunctionDecl *, unsigned> >::iterator | |||
8338 | NearMatch = NearMatches.begin(), NearMatchEnd = NearMatches.end(); | |||
8339 | NearMatch != NearMatchEnd; ++NearMatch) { | |||
8340 | FunctionDecl *FD = NearMatch->first; | |||
8341 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD); | |||
8342 | bool FDisConst = MD && MD->isConst(); | |||
8343 | bool IsMember = MD || !IsLocalFriend; | |||
8344 | ||||
8345 | // FIXME: These notes are poorly worded for the local friend case. | |||
8346 | if (unsigned Idx = NearMatch->second) { | |||
8347 | ParmVarDecl *FDParam = FD->getParamDecl(Idx-1); | |||
8348 | SourceLocation Loc = FDParam->getTypeSpecStartLoc(); | |||
8349 | if (Loc.isInvalid()) Loc = FD->getLocation(); | |||
8350 | SemaRef.Diag(Loc, IsMember ? diag::note_member_def_close_param_match | |||
8351 | : diag::note_local_decl_close_param_match) | |||
8352 | << Idx << FDParam->getType() | |||
8353 | << NewFD->getParamDecl(Idx - 1)->getType(); | |||
8354 | } else if (FDisConst != NewFDisConst) { | |||
8355 | SemaRef.Diag(FD->getLocation(), diag::note_member_def_close_const_match) | |||
8356 | << NewFDisConst << FD->getSourceRange().getEnd(); | |||
8357 | } else | |||
8358 | SemaRef.Diag(FD->getLocation(), | |||
8359 | IsMember ? diag::note_member_def_close_match | |||
8360 | : diag::note_local_decl_close_match); | |||
8361 | } | |||
8362 | return nullptr; | |||
8363 | } | |||
8364 | ||||
8365 | static StorageClass getFunctionStorageClass(Sema &SemaRef, Declarator &D) { | |||
8366 | switch (D.getDeclSpec().getStorageClassSpec()) { | |||
8367 | default: llvm_unreachable("Unknown storage class!")::llvm::llvm_unreachable_internal("Unknown storage class!", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8367); | |||
8368 | case DeclSpec::SCS_auto: | |||
8369 | case DeclSpec::SCS_register: | |||
8370 | case DeclSpec::SCS_mutable: | |||
8371 | SemaRef.Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
8372 | diag::err_typecheck_sclass_func); | |||
8373 | D.getMutableDeclSpec().ClearStorageClassSpecs(); | |||
8374 | D.setInvalidType(); | |||
8375 | break; | |||
8376 | case DeclSpec::SCS_unspecified: break; | |||
8377 | case DeclSpec::SCS_extern: | |||
8378 | if (D.getDeclSpec().isExternInLinkageSpec()) | |||
8379 | return SC_None; | |||
8380 | return SC_Extern; | |||
8381 | case DeclSpec::SCS_static: { | |||
8382 | if (SemaRef.CurContext->getRedeclContext()->isFunctionOrMethod()) { | |||
8383 | // C99 6.7.1p5: | |||
8384 | // The declaration of an identifier for a function that has | |||
8385 | // block scope shall have no explicit storage-class specifier | |||
8386 | // other than extern | |||
8387 | // See also (C++ [dcl.stc]p4). | |||
8388 | SemaRef.Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
8389 | diag::err_static_block_func); | |||
8390 | break; | |||
8391 | } else | |||
8392 | return SC_Static; | |||
8393 | } | |||
8394 | case DeclSpec::SCS_private_extern: return SC_PrivateExtern; | |||
8395 | } | |||
8396 | ||||
8397 | // No explicit storage class has already been returned | |||
8398 | return SC_None; | |||
8399 | } | |||
8400 | ||||
8401 | static FunctionDecl *CreateNewFunctionDecl(Sema &SemaRef, Declarator &D, | |||
8402 | DeclContext *DC, QualType &R, | |||
8403 | TypeSourceInfo *TInfo, | |||
8404 | StorageClass SC, | |||
8405 | bool &IsVirtualOkay) { | |||
8406 | DeclarationNameInfo NameInfo = SemaRef.GetNameForDeclarator(D); | |||
8407 | DeclarationName Name = NameInfo.getName(); | |||
8408 | ||||
8409 | FunctionDecl *NewFD = nullptr; | |||
8410 | bool isInline = D.getDeclSpec().isInlineSpecified(); | |||
8411 | ||||
8412 | if (!SemaRef.getLangOpts().CPlusPlus) { | |||
8413 | // Determine whether the function was written with a | |||
8414 | // prototype. This true when: | |||
8415 | // - there is a prototype in the declarator, or | |||
8416 | // - the type R of the function is some kind of typedef or other non- | |||
8417 | // attributed reference to a type name (which eventually refers to a | |||
8418 | // function type). | |||
8419 | bool HasPrototype = | |||
8420 | (D.isFunctionDeclarator() && D.getFunctionTypeInfo().hasPrototype) || | |||
8421 | (!R->getAsAdjusted<FunctionType>() && R->isFunctionProtoType()); | |||
8422 | ||||
8423 | NewFD = FunctionDecl::Create(SemaRef.Context, DC, D.getBeginLoc(), NameInfo, | |||
8424 | R, TInfo, SC, isInline, HasPrototype, | |||
8425 | ConstexprSpecKind::Unspecified, | |||
8426 | /*TrailingRequiresClause=*/nullptr); | |||
8427 | if (D.isInvalidType()) | |||
8428 | NewFD->setInvalidDecl(); | |||
8429 | ||||
8430 | return NewFD; | |||
8431 | } | |||
8432 | ||||
8433 | ExplicitSpecifier ExplicitSpecifier = D.getDeclSpec().getExplicitSpecifier(); | |||
8434 | ||||
8435 | ConstexprSpecKind ConstexprKind = D.getDeclSpec().getConstexprSpecifier(); | |||
8436 | if (ConstexprKind == ConstexprSpecKind::Constinit) { | |||
8437 | SemaRef.Diag(D.getDeclSpec().getConstexprSpecLoc(), | |||
8438 | diag::err_constexpr_wrong_decl_kind) | |||
8439 | << static_cast<int>(ConstexprKind); | |||
8440 | ConstexprKind = ConstexprSpecKind::Unspecified; | |||
8441 | D.getMutableDeclSpec().ClearConstexprSpec(); | |||
8442 | } | |||
8443 | Expr *TrailingRequiresClause = D.getTrailingRequiresClause(); | |||
8444 | ||||
8445 | // Check that the return type is not an abstract class type. | |||
8446 | // For record types, this is done by the AbstractClassUsageDiagnoser once | |||
8447 | // the class has been completely parsed. | |||
8448 | if (!DC->isRecord() && | |||
8449 | SemaRef.RequireNonAbstractType( | |||
8450 | D.getIdentifierLoc(), R->castAs<FunctionType>()->getReturnType(), | |||
8451 | diag::err_abstract_type_in_decl, SemaRef.AbstractReturnType)) | |||
8452 | D.setInvalidType(); | |||
8453 | ||||
8454 | if (Name.getNameKind() == DeclarationName::CXXConstructorName) { | |||
8455 | // This is a C++ constructor declaration. | |||
8456 | assert(DC->isRecord() &&((DC->isRecord() && "Constructors can only be declared in a member context" ) ? static_cast<void> (0) : __assert_fail ("DC->isRecord() && \"Constructors can only be declared in a member context\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8457, __PRETTY_FUNCTION__)) | |||
8457 | "Constructors can only be declared in a member context")((DC->isRecord() && "Constructors can only be declared in a member context" ) ? static_cast<void> (0) : __assert_fail ("DC->isRecord() && \"Constructors can only be declared in a member context\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8457, __PRETTY_FUNCTION__)); | |||
8458 | ||||
8459 | R = SemaRef.CheckConstructorDeclarator(D, R, SC); | |||
8460 | return CXXConstructorDecl::Create( | |||
8461 | SemaRef.Context, cast<CXXRecordDecl>(DC), D.getBeginLoc(), NameInfo, R, | |||
8462 | TInfo, ExplicitSpecifier, isInline, | |||
8463 | /*isImplicitlyDeclared=*/false, ConstexprKind, InheritedConstructor(), | |||
8464 | TrailingRequiresClause); | |||
8465 | ||||
8466 | } else if (Name.getNameKind() == DeclarationName::CXXDestructorName) { | |||
8467 | // This is a C++ destructor declaration. | |||
8468 | if (DC->isRecord()) { | |||
8469 | R = SemaRef.CheckDestructorDeclarator(D, R, SC); | |||
8470 | CXXRecordDecl *Record = cast<CXXRecordDecl>(DC); | |||
8471 | CXXDestructorDecl *NewDD = CXXDestructorDecl::Create( | |||
8472 | SemaRef.Context, Record, D.getBeginLoc(), NameInfo, R, TInfo, | |||
8473 | isInline, /*isImplicitlyDeclared=*/false, ConstexprKind, | |||
8474 | TrailingRequiresClause); | |||
8475 | ||||
8476 | // If the destructor needs an implicit exception specification, set it | |||
8477 | // now. FIXME: It'd be nice to be able to create the right type to start | |||
8478 | // with, but the type needs to reference the destructor declaration. | |||
8479 | if (SemaRef.getLangOpts().CPlusPlus11) | |||
8480 | SemaRef.AdjustDestructorExceptionSpec(NewDD); | |||
8481 | ||||
8482 | IsVirtualOkay = true; | |||
8483 | return NewDD; | |||
8484 | ||||
8485 | } else { | |||
8486 | SemaRef.Diag(D.getIdentifierLoc(), diag::err_destructor_not_member); | |||
8487 | D.setInvalidType(); | |||
8488 | ||||
8489 | // Create a FunctionDecl to satisfy the function definition parsing | |||
8490 | // code path. | |||
8491 | return FunctionDecl::Create(SemaRef.Context, DC, D.getBeginLoc(), | |||
8492 | D.getIdentifierLoc(), Name, R, TInfo, SC, | |||
8493 | isInline, | |||
8494 | /*hasPrototype=*/true, ConstexprKind, | |||
8495 | TrailingRequiresClause); | |||
8496 | } | |||
8497 | ||||
8498 | } else if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { | |||
8499 | if (!DC->isRecord()) { | |||
8500 | SemaRef.Diag(D.getIdentifierLoc(), | |||
8501 | diag::err_conv_function_not_member); | |||
8502 | return nullptr; | |||
8503 | } | |||
8504 | ||||
8505 | SemaRef.CheckConversionDeclarator(D, R, SC); | |||
8506 | if (D.isInvalidType()) | |||
8507 | return nullptr; | |||
8508 | ||||
8509 | IsVirtualOkay = true; | |||
8510 | return CXXConversionDecl::Create( | |||
8511 | SemaRef.Context, cast<CXXRecordDecl>(DC), D.getBeginLoc(), NameInfo, R, | |||
8512 | TInfo, isInline, ExplicitSpecifier, ConstexprKind, SourceLocation(), | |||
8513 | TrailingRequiresClause); | |||
8514 | ||||
8515 | } else if (Name.getNameKind() == DeclarationName::CXXDeductionGuideName) { | |||
8516 | if (TrailingRequiresClause) | |||
8517 | SemaRef.Diag(TrailingRequiresClause->getBeginLoc(), | |||
8518 | diag::err_trailing_requires_clause_on_deduction_guide) | |||
8519 | << TrailingRequiresClause->getSourceRange(); | |||
8520 | SemaRef.CheckDeductionGuideDeclarator(D, R, SC); | |||
8521 | ||||
8522 | return CXXDeductionGuideDecl::Create(SemaRef.Context, DC, D.getBeginLoc(), | |||
8523 | ExplicitSpecifier, NameInfo, R, TInfo, | |||
8524 | D.getEndLoc()); | |||
8525 | } else if (DC->isRecord()) { | |||
8526 | // If the name of the function is the same as the name of the record, | |||
8527 | // then this must be an invalid constructor that has a return type. | |||
8528 | // (The parser checks for a return type and makes the declarator a | |||
8529 | // constructor if it has no return type). | |||
8530 | if (Name.getAsIdentifierInfo() && | |||
8531 | Name.getAsIdentifierInfo() == cast<CXXRecordDecl>(DC)->getIdentifier()){ | |||
8532 | SemaRef.Diag(D.getIdentifierLoc(), diag::err_constructor_return_type) | |||
8533 | << SourceRange(D.getDeclSpec().getTypeSpecTypeLoc()) | |||
8534 | << SourceRange(D.getIdentifierLoc()); | |||
8535 | return nullptr; | |||
8536 | } | |||
8537 | ||||
8538 | // This is a C++ method declaration. | |||
8539 | CXXMethodDecl *Ret = CXXMethodDecl::Create( | |||
8540 | SemaRef.Context, cast<CXXRecordDecl>(DC), D.getBeginLoc(), NameInfo, R, | |||
8541 | TInfo, SC, isInline, ConstexprKind, SourceLocation(), | |||
8542 | TrailingRequiresClause); | |||
8543 | IsVirtualOkay = !Ret->isStatic(); | |||
8544 | return Ret; | |||
8545 | } else { | |||
8546 | bool isFriend = | |||
8547 | SemaRef.getLangOpts().CPlusPlus && D.getDeclSpec().isFriendSpecified(); | |||
8548 | if (!isFriend && SemaRef.CurContext->isRecord()) | |||
8549 | return nullptr; | |||
8550 | ||||
8551 | // Determine whether the function was written with a | |||
8552 | // prototype. This true when: | |||
8553 | // - we're in C++ (where every function has a prototype), | |||
8554 | return FunctionDecl::Create(SemaRef.Context, DC, D.getBeginLoc(), NameInfo, | |||
8555 | R, TInfo, SC, isInline, true /*HasPrototype*/, | |||
8556 | ConstexprKind, TrailingRequiresClause); | |||
8557 | } | |||
8558 | } | |||
8559 | ||||
8560 | enum OpenCLParamType { | |||
8561 | ValidKernelParam, | |||
8562 | PtrPtrKernelParam, | |||
8563 | PtrKernelParam, | |||
8564 | InvalidAddrSpacePtrKernelParam, | |||
8565 | InvalidKernelParam, | |||
8566 | RecordKernelParam | |||
8567 | }; | |||
8568 | ||||
8569 | static bool isOpenCLSizeDependentType(ASTContext &C, QualType Ty) { | |||
8570 | // Size dependent types are just typedefs to normal integer types | |||
8571 | // (e.g. unsigned long), so we cannot distinguish them from other typedefs to | |||
8572 | // integers other than by their names. | |||
8573 | StringRef SizeTypeNames[] = {"size_t", "intptr_t", "uintptr_t", "ptrdiff_t"}; | |||
8574 | ||||
8575 | // Remove typedefs one by one until we reach a typedef | |||
8576 | // for a size dependent type. | |||
8577 | QualType DesugaredTy = Ty; | |||
8578 | do { | |||
8579 | ArrayRef<StringRef> Names(SizeTypeNames); | |||
8580 | auto Match = llvm::find(Names, DesugaredTy.getUnqualifiedType().getAsString()); | |||
8581 | if (Names.end() != Match) | |||
8582 | return true; | |||
8583 | ||||
8584 | Ty = DesugaredTy; | |||
8585 | DesugaredTy = Ty.getSingleStepDesugaredType(C); | |||
8586 | } while (DesugaredTy != Ty); | |||
8587 | ||||
8588 | return false; | |||
8589 | } | |||
8590 | ||||
8591 | static OpenCLParamType getOpenCLKernelParameterType(Sema &S, QualType PT) { | |||
8592 | if (PT->isPointerType()) { | |||
8593 | QualType PointeeType = PT->getPointeeType(); | |||
8594 | if (PointeeType->isPointerType()) | |||
8595 | return PtrPtrKernelParam; | |||
8596 | if (PointeeType.getAddressSpace() == LangAS::opencl_generic || | |||
8597 | PointeeType.getAddressSpace() == LangAS::opencl_private || | |||
8598 | PointeeType.getAddressSpace() == LangAS::Default) | |||
8599 | return InvalidAddrSpacePtrKernelParam; | |||
8600 | return PtrKernelParam; | |||
8601 | } | |||
8602 | ||||
8603 | // OpenCL v1.2 s6.9.k: | |||
8604 | // Arguments to kernel functions in a program cannot be declared with the | |||
8605 | // built-in scalar types bool, half, size_t, ptrdiff_t, intptr_t, and | |||
8606 | // uintptr_t or a struct and/or union that contain fields declared to be one | |||
8607 | // of these built-in scalar types. | |||
8608 | if (isOpenCLSizeDependentType(S.getASTContext(), PT)) | |||
8609 | return InvalidKernelParam; | |||
8610 | ||||
8611 | if (PT->isImageType()) | |||
8612 | return PtrKernelParam; | |||
8613 | ||||
8614 | if (PT->isBooleanType() || PT->isEventT() || PT->isReserveIDT()) | |||
8615 | return InvalidKernelParam; | |||
8616 | ||||
8617 | // OpenCL extension spec v1.2 s9.5: | |||
8618 | // This extension adds support for half scalar and vector types as built-in | |||
8619 | // types that can be used for arithmetic operations, conversions etc. | |||
8620 | if (!S.getOpenCLOptions().isEnabled("cl_khr_fp16") && PT->isHalfType()) | |||
8621 | return InvalidKernelParam; | |||
8622 | ||||
8623 | if (PT->isRecordType()) | |||
8624 | return RecordKernelParam; | |||
8625 | ||||
8626 | // Look into an array argument to check if it has a forbidden type. | |||
8627 | if (PT->isArrayType()) { | |||
8628 | const Type *UnderlyingTy = PT->getPointeeOrArrayElementType(); | |||
8629 | // Call ourself to check an underlying type of an array. Since the | |||
8630 | // getPointeeOrArrayElementType returns an innermost type which is not an | |||
8631 | // array, this recursive call only happens once. | |||
8632 | return getOpenCLKernelParameterType(S, QualType(UnderlyingTy, 0)); | |||
8633 | } | |||
8634 | ||||
8635 | return ValidKernelParam; | |||
8636 | } | |||
8637 | ||||
8638 | static void checkIsValidOpenCLKernelParameter( | |||
8639 | Sema &S, | |||
8640 | Declarator &D, | |||
8641 | ParmVarDecl *Param, | |||
8642 | llvm::SmallPtrSetImpl<const Type *> &ValidTypes) { | |||
8643 | QualType PT = Param->getType(); | |||
8644 | ||||
8645 | // Cache the valid types we encounter to avoid rechecking structs that are | |||
8646 | // used again | |||
8647 | if (ValidTypes.count(PT.getTypePtr())) | |||
| ||||
8648 | return; | |||
8649 | ||||
8650 | switch (getOpenCLKernelParameterType(S, PT)) { | |||
8651 | case PtrPtrKernelParam: | |||
8652 | // OpenCL v1.2 s6.9.a: | |||
8653 | // A kernel function argument cannot be declared as a | |||
8654 | // pointer to a pointer type. | |||
8655 | S.Diag(Param->getLocation(), diag::err_opencl_ptrptr_kernel_param); | |||
8656 | D.setInvalidType(); | |||
8657 | return; | |||
8658 | ||||
8659 | case InvalidAddrSpacePtrKernelParam: | |||
8660 | // OpenCL v1.0 s6.5: | |||
8661 | // __kernel function arguments declared to be a pointer of a type can point | |||
8662 | // to one of the following address spaces only : __global, __local or | |||
8663 | // __constant. | |||
8664 | S.Diag(Param->getLocation(), diag::err_kernel_arg_address_space); | |||
8665 | D.setInvalidType(); | |||
8666 | return; | |||
8667 | ||||
8668 | // OpenCL v1.2 s6.9.k: | |||
8669 | // Arguments to kernel functions in a program cannot be declared with the | |||
8670 | // built-in scalar types bool, half, size_t, ptrdiff_t, intptr_t, and | |||
8671 | // uintptr_t or a struct and/or union that contain fields declared to be | |||
8672 | // one of these built-in scalar types. | |||
8673 | ||||
8674 | case InvalidKernelParam: | |||
8675 | // OpenCL v1.2 s6.8 n: | |||
8676 | // A kernel function argument cannot be declared | |||
8677 | // of event_t type. | |||
8678 | // Do not diagnose half type since it is diagnosed as invalid argument | |||
8679 | // type for any function elsewhere. | |||
8680 | if (!PT->isHalfType()) { | |||
8681 | S.Diag(Param->getLocation(), diag::err_bad_kernel_param_type) << PT; | |||
8682 | ||||
8683 | // Explain what typedefs are involved. | |||
8684 | const TypedefType *Typedef = nullptr; | |||
8685 | while ((Typedef = PT->getAs<TypedefType>())) { | |||
8686 | SourceLocation Loc = Typedef->getDecl()->getLocation(); | |||
8687 | // SourceLocation may be invalid for a built-in type. | |||
8688 | if (Loc.isValid()) | |||
8689 | S.Diag(Loc, diag::note_entity_declared_at) << PT; | |||
8690 | PT = Typedef->desugar(); | |||
8691 | } | |||
8692 | } | |||
8693 | ||||
8694 | D.setInvalidType(); | |||
8695 | return; | |||
8696 | ||||
8697 | case PtrKernelParam: | |||
8698 | case ValidKernelParam: | |||
8699 | ValidTypes.insert(PT.getTypePtr()); | |||
8700 | return; | |||
8701 | ||||
8702 | case RecordKernelParam: | |||
8703 | break; | |||
8704 | } | |||
8705 | ||||
8706 | // Track nested structs we will inspect | |||
8707 | SmallVector<const Decl *, 4> VisitStack; | |||
8708 | ||||
8709 | // Track where we are in the nested structs. Items will migrate from | |||
8710 | // VisitStack to HistoryStack as we do the DFS for bad field. | |||
8711 | SmallVector<const FieldDecl *, 4> HistoryStack; | |||
8712 | HistoryStack.push_back(nullptr); | |||
8713 | ||||
8714 | // At this point we already handled everything except of a RecordType or | |||
8715 | // an ArrayType of a RecordType. | |||
8716 | assert((PT->isArrayType() || PT->isRecordType()) && "Unexpected type.")(((PT->isArrayType() || PT->isRecordType()) && "Unexpected type." ) ? static_cast<void> (0) : __assert_fail ("(PT->isArrayType() || PT->isRecordType()) && \"Unexpected type.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8716, __PRETTY_FUNCTION__)); | |||
8717 | const RecordType *RecTy = | |||
8718 | PT->getPointeeOrArrayElementType()->getAs<RecordType>(); | |||
8719 | const RecordDecl *OrigRecDecl = RecTy->getDecl(); | |||
| ||||
8720 | ||||
8721 | VisitStack.push_back(RecTy->getDecl()); | |||
8722 | assert(VisitStack.back() && "First decl null?")((VisitStack.back() && "First decl null?") ? static_cast <void> (0) : __assert_fail ("VisitStack.back() && \"First decl null?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8722, __PRETTY_FUNCTION__)); | |||
8723 | ||||
8724 | do { | |||
8725 | const Decl *Next = VisitStack.pop_back_val(); | |||
8726 | if (!Next) { | |||
8727 | assert(!HistoryStack.empty())((!HistoryStack.empty()) ? static_cast<void> (0) : __assert_fail ("!HistoryStack.empty()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8727, __PRETTY_FUNCTION__)); | |||
8728 | // Found a marker, we have gone up a level | |||
8729 | if (const FieldDecl *Hist = HistoryStack.pop_back_val()) | |||
8730 | ValidTypes.insert(Hist->getType().getTypePtr()); | |||
8731 | ||||
8732 | continue; | |||
8733 | } | |||
8734 | ||||
8735 | // Adds everything except the original parameter declaration (which is not a | |||
8736 | // field itself) to the history stack. | |||
8737 | const RecordDecl *RD; | |||
8738 | if (const FieldDecl *Field = dyn_cast<FieldDecl>(Next)) { | |||
8739 | HistoryStack.push_back(Field); | |||
8740 | ||||
8741 | QualType FieldTy = Field->getType(); | |||
8742 | // Other field types (known to be valid or invalid) are handled while we | |||
8743 | // walk around RecordDecl::fields(). | |||
8744 | assert((FieldTy->isArrayType() || FieldTy->isRecordType()) &&(((FieldTy->isArrayType() || FieldTy->isRecordType()) && "Unexpected type.") ? static_cast<void> (0) : __assert_fail ("(FieldTy->isArrayType() || FieldTy->isRecordType()) && \"Unexpected type.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8745, __PRETTY_FUNCTION__)) | |||
8745 | "Unexpected type.")(((FieldTy->isArrayType() || FieldTy->isRecordType()) && "Unexpected type.") ? static_cast<void> (0) : __assert_fail ("(FieldTy->isArrayType() || FieldTy->isRecordType()) && \"Unexpected type.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8745, __PRETTY_FUNCTION__)); | |||
8746 | const Type *FieldRecTy = FieldTy->getPointeeOrArrayElementType(); | |||
8747 | ||||
8748 | RD = FieldRecTy->castAs<RecordType>()->getDecl(); | |||
8749 | } else { | |||
8750 | RD = cast<RecordDecl>(Next); | |||
8751 | } | |||
8752 | ||||
8753 | // Add a null marker so we know when we've gone back up a level | |||
8754 | VisitStack.push_back(nullptr); | |||
8755 | ||||
8756 | for (const auto *FD : RD->fields()) { | |||
8757 | QualType QT = FD->getType(); | |||
8758 | ||||
8759 | if (ValidTypes.count(QT.getTypePtr())) | |||
8760 | continue; | |||
8761 | ||||
8762 | OpenCLParamType ParamType = getOpenCLKernelParameterType(S, QT); | |||
8763 | if (ParamType == ValidKernelParam) | |||
8764 | continue; | |||
8765 | ||||
8766 | if (ParamType == RecordKernelParam) { | |||
8767 | VisitStack.push_back(FD); | |||
8768 | continue; | |||
8769 | } | |||
8770 | ||||
8771 | // OpenCL v1.2 s6.9.p: | |||
8772 | // Arguments to kernel functions that are declared to be a struct or union | |||
8773 | // do not allow OpenCL objects to be passed as elements of the struct or | |||
8774 | // union. | |||
8775 | if (ParamType == PtrKernelParam || ParamType == PtrPtrKernelParam || | |||
8776 | ParamType == InvalidAddrSpacePtrKernelParam) { | |||
8777 | S.Diag(Param->getLocation(), | |||
8778 | diag::err_record_with_pointers_kernel_param) | |||
8779 | << PT->isUnionType() | |||
8780 | << PT; | |||
8781 | } else { | |||
8782 | S.Diag(Param->getLocation(), diag::err_bad_kernel_param_type) << PT; | |||
8783 | } | |||
8784 | ||||
8785 | S.Diag(OrigRecDecl->getLocation(), diag::note_within_field_of_type) | |||
8786 | << OrigRecDecl->getDeclName(); | |||
8787 | ||||
8788 | // We have an error, now let's go back up through history and show where | |||
8789 | // the offending field came from | |||
8790 | for (ArrayRef<const FieldDecl *>::const_iterator | |||
8791 | I = HistoryStack.begin() + 1, | |||
8792 | E = HistoryStack.end(); | |||
8793 | I != E; ++I) { | |||
8794 | const FieldDecl *OuterField = *I; | |||
8795 | S.Diag(OuterField->getLocation(), diag::note_within_field_of_type) | |||
8796 | << OuterField->getType(); | |||
8797 | } | |||
8798 | ||||
8799 | S.Diag(FD->getLocation(), diag::note_illegal_field_declared_here) | |||
8800 | << QT->isPointerType() | |||
8801 | << QT; | |||
8802 | D.setInvalidType(); | |||
8803 | return; | |||
8804 | } | |||
8805 | } while (!VisitStack.empty()); | |||
8806 | } | |||
8807 | ||||
8808 | /// Find the DeclContext in which a tag is implicitly declared if we see an | |||
8809 | /// elaborated type specifier in the specified context, and lookup finds | |||
8810 | /// nothing. | |||
8811 | static DeclContext *getTagInjectionContext(DeclContext *DC) { | |||
8812 | while (!DC->isFileContext() && !DC->isFunctionOrMethod()) | |||
8813 | DC = DC->getParent(); | |||
8814 | return DC; | |||
8815 | } | |||
8816 | ||||
8817 | /// Find the Scope in which a tag is implicitly declared if we see an | |||
8818 | /// elaborated type specifier in the specified context, and lookup finds | |||
8819 | /// nothing. | |||
8820 | static Scope *getTagInjectionScope(Scope *S, const LangOptions &LangOpts) { | |||
8821 | while (S->isClassScope() || | |||
8822 | (LangOpts.CPlusPlus && | |||
8823 | S->isFunctionPrototypeScope()) || | |||
8824 | ((S->getFlags() & Scope::DeclScope) == 0) || | |||
8825 | (S->getEntity() && S->getEntity()->isTransparentContext())) | |||
8826 | S = S->getParent(); | |||
8827 | return S; | |||
8828 | } | |||
8829 | ||||
8830 | NamedDecl* | |||
8831 | Sema::ActOnFunctionDeclarator(Scope *S, Declarator &D, DeclContext *DC, | |||
8832 | TypeSourceInfo *TInfo, LookupResult &Previous, | |||
8833 | MultiTemplateParamsArg TemplateParamListsRef, | |||
8834 | bool &AddToScope) { | |||
8835 | QualType R = TInfo->getType(); | |||
8836 | ||||
8837 | assert(R->isFunctionType())((R->isFunctionType()) ? static_cast<void> (0) : __assert_fail ("R->isFunctionType()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 8837, __PRETTY_FUNCTION__)); | |||
8838 | if (R.getCanonicalType()->castAs<FunctionType>()->getCmseNSCallAttr()) | |||
8839 | Diag(D.getIdentifierLoc(), diag::err_function_decl_cmse_ns_call); | |||
8840 | ||||
8841 | SmallVector<TemplateParameterList *, 4> TemplateParamLists; | |||
8842 | for (TemplateParameterList *TPL : TemplateParamListsRef) | |||
8843 | TemplateParamLists.push_back(TPL); | |||
8844 | if (TemplateParameterList *Invented = D.getInventedTemplateParameterList()) { | |||
8845 | if (!TemplateParamLists.empty() && | |||
8846 | Invented->getDepth() == TemplateParamLists.back()->getDepth()) | |||
8847 | TemplateParamLists.back() = Invented; | |||
8848 | else | |||
8849 | TemplateParamLists.push_back(Invented); | |||
8850 | } | |||
8851 | ||||
8852 | // TODO: consider using NameInfo for diagnostic. | |||
8853 | DeclarationNameInfo NameInfo = GetNameForDeclarator(D); | |||
8854 | DeclarationName Name = NameInfo.getName(); | |||
8855 | StorageClass SC = getFunctionStorageClass(*this, D); | |||
8856 | ||||
8857 | if (DeclSpec::TSCS TSCS = D.getDeclSpec().getThreadStorageClassSpec()) | |||
8858 | Diag(D.getDeclSpec().getThreadStorageClassSpecLoc(), | |||
8859 | diag::err_invalid_thread) | |||
8860 | << DeclSpec::getSpecifierName(TSCS); | |||
8861 | ||||
8862 | if (D.isFirstDeclarationOfMember()) | |||
8863 | adjustMemberFunctionCC(R, D.isStaticMember(), D.isCtorOrDtor(), | |||
8864 | D.getIdentifierLoc()); | |||
8865 | ||||
8866 | bool isFriend = false; | |||
8867 | FunctionTemplateDecl *FunctionTemplate = nullptr; | |||
8868 | bool isMemberSpecialization = false; | |||
8869 | bool isFunctionTemplateSpecialization = false; | |||
8870 | ||||
8871 | bool isDependentClassScopeExplicitSpecialization = false; | |||
8872 | bool HasExplicitTemplateArgs = false; | |||
8873 | TemplateArgumentListInfo TemplateArgs; | |||
8874 | ||||
8875 | bool isVirtualOkay = false; | |||
8876 | ||||
8877 | DeclContext *OriginalDC = DC; | |||
8878 | bool IsLocalExternDecl = adjustContextForLocalExternDecl(DC); | |||
8879 | ||||
8880 | FunctionDecl *NewFD = CreateNewFunctionDecl(*this, D, DC, R, TInfo, SC, | |||
8881 | isVirtualOkay); | |||
8882 | if (!NewFD) return nullptr; | |||
8883 | ||||
8884 | if (OriginalLexicalContext && OriginalLexicalContext->isObjCContainer()) | |||
8885 | NewFD->setTopLevelDeclInObjCContainer(); | |||
8886 | ||||
8887 | // Set the lexical context. If this is a function-scope declaration, or has a | |||
8888 | // C++ scope specifier, or is the object of a friend declaration, the lexical | |||
8889 | // context will be different from the semantic context. | |||
8890 | NewFD->setLexicalDeclContext(CurContext); | |||
8891 | ||||
8892 | if (IsLocalExternDecl) | |||
8893 | NewFD->setLocalExternDecl(); | |||
8894 | ||||
8895 | if (getLangOpts().CPlusPlus) { | |||
8896 | bool isInline = D.getDeclSpec().isInlineSpecified(); | |||
8897 | bool isVirtual = D.getDeclSpec().isVirtualSpecified(); | |||
8898 | bool hasExplicit = D.getDeclSpec().hasExplicitSpecifier(); | |||
8899 | isFriend = D.getDeclSpec().isFriendSpecified(); | |||
8900 | if (isFriend && !isInline && D.isFunctionDefinition()) { | |||
8901 | // C++ [class.friend]p5 | |||
8902 | // A function can be defined in a friend declaration of a | |||
8903 | // class . . . . Such a function is implicitly inline. | |||
8904 | NewFD->setImplicitlyInline(); | |||
8905 | } | |||
8906 | ||||
8907 | // If this is a method defined in an __interface, and is not a constructor | |||
8908 | // or an overloaded operator, then set the pure flag (isVirtual will already | |||
8909 | // return true). | |||
8910 | if (const CXXRecordDecl *Parent = | |||
8911 | dyn_cast<CXXRecordDecl>(NewFD->getDeclContext())) { | |||
8912 | if (Parent->isInterface() && cast<CXXMethodDecl>(NewFD)->isUserProvided()) | |||
8913 | NewFD->setPure(true); | |||
8914 | ||||
8915 | // C++ [class.union]p2 | |||
8916 | // A union can have member functions, but not virtual functions. | |||
8917 | if (isVirtual && Parent->isUnion()) | |||
8918 | Diag(D.getDeclSpec().getVirtualSpecLoc(), diag::err_virtual_in_union); | |||
8919 | } | |||
8920 | ||||
8921 | SetNestedNameSpecifier(*this, NewFD, D); | |||
8922 | isMemberSpecialization = false; | |||
8923 | isFunctionTemplateSpecialization = false; | |||
8924 | if (D.isInvalidType()) | |||
8925 | NewFD->setInvalidDecl(); | |||
8926 | ||||
8927 | // Match up the template parameter lists with the scope specifier, then | |||
8928 | // determine whether we have a template or a template specialization. | |||
8929 | bool Invalid = false; | |||
8930 | TemplateParameterList *TemplateParams = | |||
8931 | MatchTemplateParametersToScopeSpecifier( | |||
8932 | D.getDeclSpec().getBeginLoc(), D.getIdentifierLoc(), | |||
8933 | D.getCXXScopeSpec(), | |||
8934 | D.getName().getKind() == UnqualifiedIdKind::IK_TemplateId | |||
8935 | ? D.getName().TemplateId | |||
8936 | : nullptr, | |||
8937 | TemplateParamLists, isFriend, isMemberSpecialization, | |||
8938 | Invalid); | |||
8939 | if (TemplateParams) { | |||
8940 | // Check that we can declare a template here. | |||
8941 | if (CheckTemplateDeclScope(S, TemplateParams)) | |||
8942 | NewFD->setInvalidDecl(); | |||
8943 | ||||
8944 | if (TemplateParams->size() > 0) { | |||
8945 | // This is a function template | |||
8946 | ||||
8947 | // A destructor cannot be a template. | |||
8948 | if (Name.getNameKind() == DeclarationName::CXXDestructorName) { | |||
8949 | Diag(NewFD->getLocation(), diag::err_destructor_template); | |||
8950 | NewFD->setInvalidDecl(); | |||
8951 | } | |||
8952 | ||||
8953 | // If we're adding a template to a dependent context, we may need to | |||
8954 | // rebuilding some of the types used within the template parameter list, | |||
8955 | // now that we know what the current instantiation is. | |||
8956 | if (DC->isDependentContext()) { | |||
8957 | ContextRAII SavedContext(*this, DC); | |||
8958 | if (RebuildTemplateParamsInCurrentInstantiation(TemplateParams)) | |||
8959 | Invalid = true; | |||
8960 | } | |||
8961 | ||||
8962 | FunctionTemplate = FunctionTemplateDecl::Create(Context, DC, | |||
8963 | NewFD->getLocation(), | |||
8964 | Name, TemplateParams, | |||
8965 | NewFD); | |||
8966 | FunctionTemplate->setLexicalDeclContext(CurContext); | |||
8967 | NewFD->setDescribedFunctionTemplate(FunctionTemplate); | |||
8968 | ||||
8969 | // For source fidelity, store the other template param lists. | |||
8970 | if (TemplateParamLists.size() > 1) { | |||
8971 | NewFD->setTemplateParameterListsInfo(Context, | |||
8972 | ArrayRef<TemplateParameterList *>(TemplateParamLists) | |||
8973 | .drop_back(1)); | |||
8974 | } | |||
8975 | } else { | |||
8976 | // This is a function template specialization. | |||
8977 | isFunctionTemplateSpecialization = true; | |||
8978 | // For source fidelity, store all the template param lists. | |||
8979 | if (TemplateParamLists.size() > 0) | |||
8980 | NewFD->setTemplateParameterListsInfo(Context, TemplateParamLists); | |||
8981 | ||||
8982 | // C++0x [temp.expl.spec]p20 forbids "template<> friend void foo(int);". | |||
8983 | if (isFriend) { | |||
8984 | // We want to remove the "template<>", found here. | |||
8985 | SourceRange RemoveRange = TemplateParams->getSourceRange(); | |||
8986 | ||||
8987 | // If we remove the template<> and the name is not a | |||
8988 | // template-id, we're actually silently creating a problem: | |||
8989 | // the friend declaration will refer to an untemplated decl, | |||
8990 | // and clearly the user wants a template specialization. So | |||
8991 | // we need to insert '<>' after the name. | |||
8992 | SourceLocation InsertLoc; | |||
8993 | if (D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) { | |||
8994 | InsertLoc = D.getName().getSourceRange().getEnd(); | |||
8995 | InsertLoc = getLocForEndOfToken(InsertLoc); | |||
8996 | } | |||
8997 | ||||
8998 | Diag(D.getIdentifierLoc(), diag::err_template_spec_decl_friend) | |||
8999 | << Name << RemoveRange | |||
9000 | << FixItHint::CreateRemoval(RemoveRange) | |||
9001 | << FixItHint::CreateInsertion(InsertLoc, "<>"); | |||
9002 | } | |||
9003 | } | |||
9004 | } else { | |||
9005 | // Check that we can declare a template here. | |||
9006 | if (!TemplateParamLists.empty() && isMemberSpecialization && | |||
9007 | CheckTemplateDeclScope(S, TemplateParamLists.back())) | |||
9008 | NewFD->setInvalidDecl(); | |||
9009 | ||||
9010 | // All template param lists were matched against the scope specifier: | |||
9011 | // this is NOT (an explicit specialization of) a template. | |||
9012 | if (TemplateParamLists.size() > 0) | |||
9013 | // For source fidelity, store all the template param lists. | |||
9014 | NewFD->setTemplateParameterListsInfo(Context, TemplateParamLists); | |||
9015 | } | |||
9016 | ||||
9017 | if (Invalid) { | |||
9018 | NewFD->setInvalidDecl(); | |||
9019 | if (FunctionTemplate) | |||
9020 | FunctionTemplate->setInvalidDecl(); | |||
9021 | } | |||
9022 | ||||
9023 | // C++ [dcl.fct.spec]p5: | |||
9024 | // The virtual specifier shall only be used in declarations of | |||
9025 | // nonstatic class member functions that appear within a | |||
9026 | // member-specification of a class declaration; see 10.3. | |||
9027 | // | |||
9028 | if (isVirtual && !NewFD->isInvalidDecl()) { | |||
9029 | if (!isVirtualOkay) { | |||
9030 | Diag(D.getDeclSpec().getVirtualSpecLoc(), | |||
9031 | diag::err_virtual_non_function); | |||
9032 | } else if (!CurContext->isRecord()) { | |||
9033 | // 'virtual' was specified outside of the class. | |||
9034 | Diag(D.getDeclSpec().getVirtualSpecLoc(), | |||
9035 | diag::err_virtual_out_of_class) | |||
9036 | << FixItHint::CreateRemoval(D.getDeclSpec().getVirtualSpecLoc()); | |||
9037 | } else if (NewFD->getDescribedFunctionTemplate()) { | |||
9038 | // C++ [temp.mem]p3: | |||
9039 | // A member function template shall not be virtual. | |||
9040 | Diag(D.getDeclSpec().getVirtualSpecLoc(), | |||
9041 | diag::err_virtual_member_function_template) | |||
9042 | << FixItHint::CreateRemoval(D.getDeclSpec().getVirtualSpecLoc()); | |||
9043 | } else { | |||
9044 | // Okay: Add virtual to the method. | |||
9045 | NewFD->setVirtualAsWritten(true); | |||
9046 | } | |||
9047 | ||||
9048 | if (getLangOpts().CPlusPlus14 && | |||
9049 | NewFD->getReturnType()->isUndeducedType()) | |||
9050 | Diag(D.getDeclSpec().getVirtualSpecLoc(), diag::err_auto_fn_virtual); | |||
9051 | } | |||
9052 | ||||
9053 | if (getLangOpts().CPlusPlus14 && | |||
9054 | (NewFD->isDependentContext() || | |||
9055 | (isFriend && CurContext->isDependentContext())) && | |||
9056 | NewFD->getReturnType()->isUndeducedType()) { | |||
9057 | // If the function template is referenced directly (for instance, as a | |||
9058 | // member of the current instantiation), pretend it has a dependent type. | |||
9059 | // This is not really justified by the standard, but is the only sane | |||
9060 | // thing to do. | |||
9061 | // FIXME: For a friend function, we have not marked the function as being | |||
9062 | // a friend yet, so 'isDependentContext' on the FD doesn't work. | |||
9063 | const FunctionProtoType *FPT = | |||
9064 | NewFD->getType()->castAs<FunctionProtoType>(); | |||
9065 | QualType Result = | |||
9066 | SubstAutoType(FPT->getReturnType(), Context.DependentTy); | |||
9067 | NewFD->setType(Context.getFunctionType(Result, FPT->getParamTypes(), | |||
9068 | FPT->getExtProtoInfo())); | |||
9069 | } | |||
9070 | ||||
9071 | // C++ [dcl.fct.spec]p3: | |||
9072 | // The inline specifier shall not appear on a block scope function | |||
9073 | // declaration. | |||
9074 | if (isInline && !NewFD->isInvalidDecl()) { | |||
9075 | if (CurContext->isFunctionOrMethod()) { | |||
9076 | // 'inline' is not allowed on block scope function declaration. | |||
9077 | Diag(D.getDeclSpec().getInlineSpecLoc(), | |||
9078 | diag::err_inline_declaration_block_scope) << Name | |||
9079 | << FixItHint::CreateRemoval(D.getDeclSpec().getInlineSpecLoc()); | |||
9080 | } | |||
9081 | } | |||
9082 | ||||
9083 | // C++ [dcl.fct.spec]p6: | |||
9084 | // The explicit specifier shall be used only in the declaration of a | |||
9085 | // constructor or conversion function within its class definition; | |||
9086 | // see 12.3.1 and 12.3.2. | |||
9087 | if (hasExplicit && !NewFD->isInvalidDecl() && | |||
9088 | !isa<CXXDeductionGuideDecl>(NewFD)) { | |||
9089 | if (!CurContext->isRecord()) { | |||
9090 | // 'explicit' was specified outside of the class. | |||
9091 | Diag(D.getDeclSpec().getExplicitSpecLoc(), | |||
9092 | diag::err_explicit_out_of_class) | |||
9093 | << FixItHint::CreateRemoval(D.getDeclSpec().getExplicitSpecRange()); | |||
9094 | } else if (!isa<CXXConstructorDecl>(NewFD) && | |||
9095 | !isa<CXXConversionDecl>(NewFD)) { | |||
9096 | // 'explicit' was specified on a function that wasn't a constructor | |||
9097 | // or conversion function. | |||
9098 | Diag(D.getDeclSpec().getExplicitSpecLoc(), | |||
9099 | diag::err_explicit_non_ctor_or_conv_function) | |||
9100 | << FixItHint::CreateRemoval(D.getDeclSpec().getExplicitSpecRange()); | |||
9101 | } | |||
9102 | } | |||
9103 | ||||
9104 | ConstexprSpecKind ConstexprKind = D.getDeclSpec().getConstexprSpecifier(); | |||
9105 | if (ConstexprKind != ConstexprSpecKind::Unspecified) { | |||
9106 | // C++11 [dcl.constexpr]p2: constexpr functions and constexpr constructors | |||
9107 | // are implicitly inline. | |||
9108 | NewFD->setImplicitlyInline(); | |||
9109 | ||||
9110 | // C++11 [dcl.constexpr]p3: functions declared constexpr are required to | |||
9111 | // be either constructors or to return a literal type. Therefore, | |||
9112 | // destructors cannot be declared constexpr. | |||
9113 | if (isa<CXXDestructorDecl>(NewFD) && | |||
9114 | (!getLangOpts().CPlusPlus20 || | |||
9115 | ConstexprKind == ConstexprSpecKind::Consteval)) { | |||
9116 | Diag(D.getDeclSpec().getConstexprSpecLoc(), diag::err_constexpr_dtor) | |||
9117 | << static_cast<int>(ConstexprKind); | |||
9118 | NewFD->setConstexprKind(getLangOpts().CPlusPlus20 | |||
9119 | ? ConstexprSpecKind::Unspecified | |||
9120 | : ConstexprSpecKind::Constexpr); | |||
9121 | } | |||
9122 | // C++20 [dcl.constexpr]p2: An allocation function, or a | |||
9123 | // deallocation function shall not be declared with the consteval | |||
9124 | // specifier. | |||
9125 | if (ConstexprKind == ConstexprSpecKind::Consteval && | |||
9126 | (NewFD->getOverloadedOperator() == OO_New || | |||
9127 | NewFD->getOverloadedOperator() == OO_Array_New || | |||
9128 | NewFD->getOverloadedOperator() == OO_Delete || | |||
9129 | NewFD->getOverloadedOperator() == OO_Array_Delete)) { | |||
9130 | Diag(D.getDeclSpec().getConstexprSpecLoc(), | |||
9131 | diag::err_invalid_consteval_decl_kind) | |||
9132 | << NewFD; | |||
9133 | NewFD->setConstexprKind(ConstexprSpecKind::Constexpr); | |||
9134 | } | |||
9135 | } | |||
9136 | ||||
9137 | // If __module_private__ was specified, mark the function accordingly. | |||
9138 | if (D.getDeclSpec().isModulePrivateSpecified()) { | |||
9139 | if (isFunctionTemplateSpecialization) { | |||
9140 | SourceLocation ModulePrivateLoc | |||
9141 | = D.getDeclSpec().getModulePrivateSpecLoc(); | |||
9142 | Diag(ModulePrivateLoc, diag::err_module_private_specialization) | |||
9143 | << 0 | |||
9144 | << FixItHint::CreateRemoval(ModulePrivateLoc); | |||
9145 | } else { | |||
9146 | NewFD->setModulePrivate(); | |||
9147 | if (FunctionTemplate) | |||
9148 | FunctionTemplate->setModulePrivate(); | |||
9149 | } | |||
9150 | } | |||
9151 | ||||
9152 | if (isFriend) { | |||
9153 | if (FunctionTemplate) { | |||
9154 | FunctionTemplate->setObjectOfFriendDecl(); | |||
9155 | FunctionTemplate->setAccess(AS_public); | |||
9156 | } | |||
9157 | NewFD->setObjectOfFriendDecl(); | |||
9158 | NewFD->setAccess(AS_public); | |||
9159 | } | |||
9160 | ||||
9161 | // If a function is defined as defaulted or deleted, mark it as such now. | |||
9162 | // We'll do the relevant checks on defaulted / deleted functions later. | |||
9163 | switch (D.getFunctionDefinitionKind()) { | |||
9164 | case FunctionDefinitionKind::Declaration: | |||
9165 | case FunctionDefinitionKind::Definition: | |||
9166 | break; | |||
9167 | ||||
9168 | case FunctionDefinitionKind::Defaulted: | |||
9169 | NewFD->setDefaulted(); | |||
9170 | break; | |||
9171 | ||||
9172 | case FunctionDefinitionKind::Deleted: | |||
9173 | NewFD->setDeletedAsWritten(); | |||
9174 | break; | |||
9175 | } | |||
9176 | ||||
9177 | if (isa<CXXMethodDecl>(NewFD) && DC == CurContext && | |||
9178 | D.isFunctionDefinition()) { | |||
9179 | // C++ [class.mfct]p2: | |||
9180 | // A member function may be defined (8.4) in its class definition, in | |||
9181 | // which case it is an inline member function (7.1.2) | |||
9182 | NewFD->setImplicitlyInline(); | |||
9183 | } | |||
9184 | ||||
9185 | if (SC == SC_Static && isa<CXXMethodDecl>(NewFD) && | |||
9186 | !CurContext->isRecord()) { | |||
9187 | // C++ [class.static]p1: | |||
9188 | // A data or function member of a class may be declared static | |||
9189 | // in a class definition, in which case it is a static member of | |||
9190 | // the class. | |||
9191 | ||||
9192 | // Complain about the 'static' specifier if it's on an out-of-line | |||
9193 | // member function definition. | |||
9194 | ||||
9195 | // MSVC permits the use of a 'static' storage specifier on an out-of-line | |||
9196 | // member function template declaration and class member template | |||
9197 | // declaration (MSVC versions before 2015), warn about this. | |||
9198 | Diag(D.getDeclSpec().getStorageClassSpecLoc(), | |||
9199 | ((!getLangOpts().isCompatibleWithMSVC(LangOptions::MSVC2015) && | |||
9200 | cast<CXXRecordDecl>(DC)->getDescribedClassTemplate()) || | |||
9201 | (getLangOpts().MSVCCompat && NewFD->getDescribedFunctionTemplate())) | |||
9202 | ? diag::ext_static_out_of_line : diag::err_static_out_of_line) | |||
9203 | << FixItHint::CreateRemoval(D.getDeclSpec().getStorageClassSpecLoc()); | |||
9204 | } | |||
9205 | ||||
9206 | // C++11 [except.spec]p15: | |||
9207 | // A deallocation function with no exception-specification is treated | |||
9208 | // as if it were specified with noexcept(true). | |||
9209 | const FunctionProtoType *FPT = R->getAs<FunctionProtoType>(); | |||
9210 | if ((Name.getCXXOverloadedOperator() == OO_Delete || | |||
9211 | Name.getCXXOverloadedOperator() == OO_Array_Delete) && | |||
9212 | getLangOpts().CPlusPlus11 && FPT && !FPT->hasExceptionSpec()) | |||
9213 | NewFD->setType(Context.getFunctionType( | |||
9214 | FPT->getReturnType(), FPT->getParamTypes(), | |||
9215 | FPT->getExtProtoInfo().withExceptionSpec(EST_BasicNoexcept))); | |||
9216 | } | |||
9217 | ||||
9218 | // Filter out previous declarations that don't match the scope. | |||
9219 | FilterLookupForScope(Previous, OriginalDC, S, shouldConsiderLinkage(NewFD), | |||
9220 | D.getCXXScopeSpec().isNotEmpty() || | |||
9221 | isMemberSpecialization || | |||
9222 | isFunctionTemplateSpecialization); | |||
9223 | ||||
9224 | // Handle GNU asm-label extension (encoded as an attribute). | |||
9225 | if (Expr *E = (Expr*) D.getAsmLabel()) { | |||
9226 | // The parser guarantees this is a string. | |||
9227 | StringLiteral *SE = cast<StringLiteral>(E); | |||
9228 | NewFD->addAttr(AsmLabelAttr::Create(Context, SE->getString(), | |||
9229 | /*IsLiteralLabel=*/true, | |||
9230 | SE->getStrTokenLoc(0))); | |||
9231 | } else if (!ExtnameUndeclaredIdentifiers.empty()) { | |||
9232 | llvm::DenseMap<IdentifierInfo*,AsmLabelAttr*>::iterator I = | |||
9233 | ExtnameUndeclaredIdentifiers.find(NewFD->getIdentifier()); | |||
9234 | if (I != ExtnameUndeclaredIdentifiers.end()) { | |||
9235 | if (isDeclExternC(NewFD)) { | |||
9236 | NewFD->addAttr(I->second); | |||
9237 | ExtnameUndeclaredIdentifiers.erase(I); | |||
9238 | } else | |||
9239 | Diag(NewFD->getLocation(), diag::warn_redefine_extname_not_applied) | |||
9240 | << /*Variable*/0 << NewFD; | |||
9241 | } | |||
9242 | } | |||
9243 | ||||
9244 | // Copy the parameter declarations from the declarator D to the function | |||
9245 | // declaration NewFD, if they are available. First scavenge them into Params. | |||
9246 | SmallVector<ParmVarDecl*, 16> Params; | |||
9247 | unsigned FTIIdx; | |||
9248 | if (D.isFunctionDeclarator(FTIIdx)) { | |||
9249 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(FTIIdx).Fun; | |||
9250 | ||||
9251 | // Check for C99 6.7.5.3p10 - foo(void) is a non-varargs | |||
9252 | // function that takes no arguments, not a function that takes a | |||
9253 | // single void argument. | |||
9254 | // We let through "const void" here because Sema::GetTypeForDeclarator | |||
9255 | // already checks for that case. | |||
9256 | if (FTIHasNonVoidParameters(FTI) && FTI.Params[0].Param) { | |||
9257 | for (unsigned i = 0, e = FTI.NumParams; i != e; ++i) { | |||
9258 | ParmVarDecl *Param = cast<ParmVarDecl>(FTI.Params[i].Param); | |||
9259 | assert(Param->getDeclContext() != NewFD && "Was set before ?")((Param->getDeclContext() != NewFD && "Was set before ?" ) ? static_cast<void> (0) : __assert_fail ("Param->getDeclContext() != NewFD && \"Was set before ?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9259, __PRETTY_FUNCTION__)); | |||
9260 | Param->setDeclContext(NewFD); | |||
9261 | Params.push_back(Param); | |||
9262 | ||||
9263 | if (Param->isInvalidDecl()) | |||
9264 | NewFD->setInvalidDecl(); | |||
9265 | } | |||
9266 | } | |||
9267 | ||||
9268 | if (!getLangOpts().CPlusPlus) { | |||
9269 | // In C, find all the tag declarations from the prototype and move them | |||
9270 | // into the function DeclContext. Remove them from the surrounding tag | |||
9271 | // injection context of the function, which is typically but not always | |||
9272 | // the TU. | |||
9273 | DeclContext *PrototypeTagContext = | |||
9274 | getTagInjectionContext(NewFD->getLexicalDeclContext()); | |||
9275 | for (NamedDecl *NonParmDecl : FTI.getDeclsInPrototype()) { | |||
9276 | auto *TD = dyn_cast<TagDecl>(NonParmDecl); | |||
9277 | ||||
9278 | // We don't want to reparent enumerators. Look at their parent enum | |||
9279 | // instead. | |||
9280 | if (!TD) { | |||
9281 | if (auto *ECD = dyn_cast<EnumConstantDecl>(NonParmDecl)) | |||
9282 | TD = cast<EnumDecl>(ECD->getDeclContext()); | |||
9283 | } | |||
9284 | if (!TD) | |||
9285 | continue; | |||
9286 | DeclContext *TagDC = TD->getLexicalDeclContext(); | |||
9287 | if (!TagDC->containsDecl(TD)) | |||
9288 | continue; | |||
9289 | TagDC->removeDecl(TD); | |||
9290 | TD->setDeclContext(NewFD); | |||
9291 | NewFD->addDecl(TD); | |||
9292 | ||||
9293 | // Preserve the lexical DeclContext if it is not the surrounding tag | |||
9294 | // injection context of the FD. In this example, the semantic context of | |||
9295 | // E will be f and the lexical context will be S, while both the | |||
9296 | // semantic and lexical contexts of S will be f: | |||
9297 | // void f(struct S { enum E { a } f; } s); | |||
9298 | if (TagDC != PrototypeTagContext) | |||
9299 | TD->setLexicalDeclContext(TagDC); | |||
9300 | } | |||
9301 | } | |||
9302 | } else if (const FunctionProtoType *FT = R->getAs<FunctionProtoType>()) { | |||
9303 | // When we're declaring a function with a typedef, typeof, etc as in the | |||
9304 | // following example, we'll need to synthesize (unnamed) | |||
9305 | // parameters for use in the declaration. | |||
9306 | // | |||
9307 | // @code | |||
9308 | // typedef void fn(int); | |||
9309 | // fn f; | |||
9310 | // @endcode | |||
9311 | ||||
9312 | // Synthesize a parameter for each argument type. | |||
9313 | for (const auto &AI : FT->param_types()) { | |||
9314 | ParmVarDecl *Param = | |||
9315 | BuildParmVarDeclForTypedef(NewFD, D.getIdentifierLoc(), AI); | |||
9316 | Param->setScopeInfo(0, Params.size()); | |||
9317 | Params.push_back(Param); | |||
9318 | } | |||
9319 | } else { | |||
9320 | assert(R->isFunctionNoProtoType() && NewFD->getNumParams() == 0 &&((R->isFunctionNoProtoType() && NewFD->getNumParams () == 0 && "Should not need args for typedef of non-prototype fn" ) ? static_cast<void> (0) : __assert_fail ("R->isFunctionNoProtoType() && NewFD->getNumParams() == 0 && \"Should not need args for typedef of non-prototype fn\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9321, __PRETTY_FUNCTION__)) | |||
9321 | "Should not need args for typedef of non-prototype fn")((R->isFunctionNoProtoType() && NewFD->getNumParams () == 0 && "Should not need args for typedef of non-prototype fn" ) ? static_cast<void> (0) : __assert_fail ("R->isFunctionNoProtoType() && NewFD->getNumParams() == 0 && \"Should not need args for typedef of non-prototype fn\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9321, __PRETTY_FUNCTION__)); | |||
9322 | } | |||
9323 | ||||
9324 | // Finally, we know we have the right number of parameters, install them. | |||
9325 | NewFD->setParams(Params); | |||
9326 | ||||
9327 | if (D.getDeclSpec().isNoreturnSpecified()) | |||
9328 | NewFD->addAttr(C11NoReturnAttr::Create(Context, | |||
9329 | D.getDeclSpec().getNoreturnSpecLoc(), | |||
9330 | AttributeCommonInfo::AS_Keyword)); | |||
9331 | ||||
9332 | // Functions returning a variably modified type violate C99 6.7.5.2p2 | |||
9333 | // because all functions have linkage. | |||
9334 | if (!NewFD->isInvalidDecl() && | |||
9335 | NewFD->getReturnType()->isVariablyModifiedType()) { | |||
9336 | Diag(NewFD->getLocation(), diag::err_vm_func_decl); | |||
9337 | NewFD->setInvalidDecl(); | |||
9338 | } | |||
9339 | ||||
9340 | // Apply an implicit SectionAttr if '#pragma clang section text' is active | |||
9341 | if (PragmaClangTextSection.Valid && D.isFunctionDefinition() && | |||
9342 | !NewFD->hasAttr<SectionAttr>()) | |||
9343 | NewFD->addAttr(PragmaClangTextSectionAttr::CreateImplicit( | |||
9344 | Context, PragmaClangTextSection.SectionName, | |||
9345 | PragmaClangTextSection.PragmaLocation, AttributeCommonInfo::AS_Pragma)); | |||
9346 | ||||
9347 | // Apply an implicit SectionAttr if #pragma code_seg is active. | |||
9348 | if (CodeSegStack.CurrentValue && D.isFunctionDefinition() && | |||
9349 | !NewFD->hasAttr<SectionAttr>()) { | |||
9350 | NewFD->addAttr(SectionAttr::CreateImplicit( | |||
9351 | Context, CodeSegStack.CurrentValue->getString(), | |||
9352 | CodeSegStack.CurrentPragmaLocation, AttributeCommonInfo::AS_Pragma, | |||
9353 | SectionAttr::Declspec_allocate)); | |||
9354 | if (UnifySection(CodeSegStack.CurrentValue->getString(), | |||
9355 | ASTContext::PSF_Implicit | ASTContext::PSF_Execute | | |||
9356 | ASTContext::PSF_Read, | |||
9357 | NewFD)) | |||
9358 | NewFD->dropAttr<SectionAttr>(); | |||
9359 | } | |||
9360 | ||||
9361 | // Apply an implicit CodeSegAttr from class declspec or | |||
9362 | // apply an implicit SectionAttr from #pragma code_seg if active. | |||
9363 | if (!NewFD->hasAttr<CodeSegAttr>()) { | |||
9364 | if (Attr *SAttr = getImplicitCodeSegOrSectionAttrForFunction(NewFD, | |||
9365 | D.isFunctionDefinition())) { | |||
9366 | NewFD->addAttr(SAttr); | |||
9367 | } | |||
9368 | } | |||
9369 | ||||
9370 | // Handle attributes. | |||
9371 | ProcessDeclAttributes(S, NewFD, D); | |||
9372 | ||||
9373 | if (getLangOpts().OpenCL) { | |||
9374 | // OpenCL v1.1 s6.5: Using an address space qualifier in a function return | |||
9375 | // type declaration will generate a compilation error. | |||
9376 | LangAS AddressSpace = NewFD->getReturnType().getAddressSpace(); | |||
9377 | if (AddressSpace != LangAS::Default) { | |||
9378 | Diag(NewFD->getLocation(), | |||
9379 | diag::err_opencl_return_value_with_address_space); | |||
9380 | NewFD->setInvalidDecl(); | |||
9381 | } | |||
9382 | } | |||
9383 | ||||
9384 | if (!getLangOpts().CPlusPlus) { | |||
9385 | // Perform semantic checking on the function declaration. | |||
9386 | if (!NewFD->isInvalidDecl() && NewFD->isMain()) | |||
9387 | CheckMain(NewFD, D.getDeclSpec()); | |||
9388 | ||||
9389 | if (!NewFD->isInvalidDecl() && NewFD->isMSVCRTEntryPoint()) | |||
9390 | CheckMSVCRTEntryPoint(NewFD); | |||
9391 | ||||
9392 | if (!NewFD->isInvalidDecl()) | |||
9393 | D.setRedeclaration(CheckFunctionDeclaration(S, NewFD, Previous, | |||
9394 | isMemberSpecialization)); | |||
9395 | else if (!Previous.empty()) | |||
9396 | // Recover gracefully from an invalid redeclaration. | |||
9397 | D.setRedeclaration(true); | |||
9398 | assert((NewFD->isInvalidDecl() || !D.isRedeclaration() ||(((NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous .getResultKind() != LookupResult::FoundOverloaded) && "previous declaration set still overloaded") ? static_cast< void> (0) : __assert_fail ("(NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous.getResultKind() != LookupResult::FoundOverloaded) && \"previous declaration set still overloaded\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9400, __PRETTY_FUNCTION__)) | |||
9399 | Previous.getResultKind() != LookupResult::FoundOverloaded) &&(((NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous .getResultKind() != LookupResult::FoundOverloaded) && "previous declaration set still overloaded") ? static_cast< void> (0) : __assert_fail ("(NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous.getResultKind() != LookupResult::FoundOverloaded) && \"previous declaration set still overloaded\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9400, __PRETTY_FUNCTION__)) | |||
9400 | "previous declaration set still overloaded")(((NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous .getResultKind() != LookupResult::FoundOverloaded) && "previous declaration set still overloaded") ? static_cast< void> (0) : __assert_fail ("(NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous.getResultKind() != LookupResult::FoundOverloaded) && \"previous declaration set still overloaded\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9400, __PRETTY_FUNCTION__)); | |||
9401 | ||||
9402 | // Diagnose no-prototype function declarations with calling conventions that | |||
9403 | // don't support variadic calls. Only do this in C and do it after merging | |||
9404 | // possibly prototyped redeclarations. | |||
9405 | const FunctionType *FT = NewFD->getType()->castAs<FunctionType>(); | |||
9406 | if (isa<FunctionNoProtoType>(FT) && !D.isFunctionDefinition()) { | |||
9407 | CallingConv CC = FT->getExtInfo().getCC(); | |||
9408 | if (!supportsVariadicCall(CC)) { | |||
9409 | // Windows system headers sometimes accidentally use stdcall without | |||
9410 | // (void) parameters, so we relax this to a warning. | |||
9411 | int DiagID = | |||
9412 | CC == CC_X86StdCall ? diag::warn_cconv_knr : diag::err_cconv_knr; | |||
9413 | Diag(NewFD->getLocation(), DiagID) | |||
9414 | << FunctionType::getNameForCallConv(CC); | |||
9415 | } | |||
9416 | } | |||
9417 | ||||
9418 | if (NewFD->getReturnType().hasNonTrivialToPrimitiveDestructCUnion() || | |||
9419 | NewFD->getReturnType().hasNonTrivialToPrimitiveCopyCUnion()) | |||
9420 | checkNonTrivialCUnion(NewFD->getReturnType(), | |||
9421 | NewFD->getReturnTypeSourceRange().getBegin(), | |||
9422 | NTCUC_FunctionReturn, NTCUK_Destruct|NTCUK_Copy); | |||
9423 | } else { | |||
9424 | // C++11 [replacement.functions]p3: | |||
9425 | // The program's definitions shall not be specified as inline. | |||
9426 | // | |||
9427 | // N.B. We diagnose declarations instead of definitions per LWG issue 2340. | |||
9428 | // | |||
9429 | // Suppress the diagnostic if the function is __attribute__((used)), since | |||
9430 | // that forces an external definition to be emitted. | |||
9431 | if (D.getDeclSpec().isInlineSpecified() && | |||
9432 | NewFD->isReplaceableGlobalAllocationFunction() && | |||
9433 | !NewFD->hasAttr<UsedAttr>()) | |||
9434 | Diag(D.getDeclSpec().getInlineSpecLoc(), | |||
9435 | diag::ext_operator_new_delete_declared_inline) | |||
9436 | << NewFD->getDeclName(); | |||
9437 | ||||
9438 | // If the declarator is a template-id, translate the parser's template | |||
9439 | // argument list into our AST format. | |||
9440 | if (D.getName().getKind() == UnqualifiedIdKind::IK_TemplateId) { | |||
9441 | TemplateIdAnnotation *TemplateId = D.getName().TemplateId; | |||
9442 | TemplateArgs.setLAngleLoc(TemplateId->LAngleLoc); | |||
9443 | TemplateArgs.setRAngleLoc(TemplateId->RAngleLoc); | |||
9444 | ASTTemplateArgsPtr TemplateArgsPtr(TemplateId->getTemplateArgs(), | |||
9445 | TemplateId->NumArgs); | |||
9446 | translateTemplateArguments(TemplateArgsPtr, | |||
9447 | TemplateArgs); | |||
9448 | ||||
9449 | HasExplicitTemplateArgs = true; | |||
9450 | ||||
9451 | if (NewFD->isInvalidDecl()) { | |||
9452 | HasExplicitTemplateArgs = false; | |||
9453 | } else if (FunctionTemplate) { | |||
9454 | // Function template with explicit template arguments. | |||
9455 | Diag(D.getIdentifierLoc(), diag::err_function_template_partial_spec) | |||
9456 | << SourceRange(TemplateId->LAngleLoc, TemplateId->RAngleLoc); | |||
9457 | ||||
9458 | HasExplicitTemplateArgs = false; | |||
9459 | } else { | |||
9460 | assert((isFunctionTemplateSpecialization ||(((isFunctionTemplateSpecialization || D.getDeclSpec().isFriendSpecified ()) && "should have a 'template<>' for this decl" ) ? static_cast<void> (0) : __assert_fail ("(isFunctionTemplateSpecialization || D.getDeclSpec().isFriendSpecified()) && \"should have a 'template<>' for this decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9462, __PRETTY_FUNCTION__)) | |||
9461 | D.getDeclSpec().isFriendSpecified()) &&(((isFunctionTemplateSpecialization || D.getDeclSpec().isFriendSpecified ()) && "should have a 'template<>' for this decl" ) ? static_cast<void> (0) : __assert_fail ("(isFunctionTemplateSpecialization || D.getDeclSpec().isFriendSpecified()) && \"should have a 'template<>' for this decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9462, __PRETTY_FUNCTION__)) | |||
9462 | "should have a 'template<>' for this decl")(((isFunctionTemplateSpecialization || D.getDeclSpec().isFriendSpecified ()) && "should have a 'template<>' for this decl" ) ? static_cast<void> (0) : __assert_fail ("(isFunctionTemplateSpecialization || D.getDeclSpec().isFriendSpecified()) && \"should have a 'template<>' for this decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9462, __PRETTY_FUNCTION__)); | |||
9463 | // "friend void foo<>(int);" is an implicit specialization decl. | |||
9464 | isFunctionTemplateSpecialization = true; | |||
9465 | } | |||
9466 | } else if (isFriend && isFunctionTemplateSpecialization) { | |||
9467 | // This combination is only possible in a recovery case; the user | |||
9468 | // wrote something like: | |||
9469 | // template <> friend void foo(int); | |||
9470 | // which we're recovering from as if the user had written: | |||
9471 | // friend void foo<>(int); | |||
9472 | // Go ahead and fake up a template id. | |||
9473 | HasExplicitTemplateArgs = true; | |||
9474 | TemplateArgs.setLAngleLoc(D.getIdentifierLoc()); | |||
9475 | TemplateArgs.setRAngleLoc(D.getIdentifierLoc()); | |||
9476 | } | |||
9477 | ||||
9478 | // We do not add HD attributes to specializations here because | |||
9479 | // they may have different constexpr-ness compared to their | |||
9480 | // templates and, after maybeAddCUDAHostDeviceAttrs() is applied, | |||
9481 | // may end up with different effective targets. Instead, a | |||
9482 | // specialization inherits its target attributes from its template | |||
9483 | // in the CheckFunctionTemplateSpecialization() call below. | |||
9484 | if (getLangOpts().CUDA && !isFunctionTemplateSpecialization) | |||
9485 | maybeAddCUDAHostDeviceAttrs(NewFD, Previous); | |||
9486 | ||||
9487 | // If it's a friend (and only if it's a friend), it's possible | |||
9488 | // that either the specialized function type or the specialized | |||
9489 | // template is dependent, and therefore matching will fail. In | |||
9490 | // this case, don't check the specialization yet. | |||
9491 | bool InstantiationDependent = false; | |||
9492 | if (isFunctionTemplateSpecialization && isFriend && | |||
9493 | (NewFD->getType()->isDependentType() || DC->isDependentContext() || | |||
9494 | TemplateSpecializationType::anyDependentTemplateArguments( | |||
9495 | TemplateArgs, | |||
9496 | InstantiationDependent))) { | |||
9497 | assert(HasExplicitTemplateArgs &&((HasExplicitTemplateArgs && "friend function specialization without template args" ) ? static_cast<void> (0) : __assert_fail ("HasExplicitTemplateArgs && \"friend function specialization without template args\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9498, __PRETTY_FUNCTION__)) | |||
9498 | "friend function specialization without template args")((HasExplicitTemplateArgs && "friend function specialization without template args" ) ? static_cast<void> (0) : __assert_fail ("HasExplicitTemplateArgs && \"friend function specialization without template args\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9498, __PRETTY_FUNCTION__)); | |||
9499 | if (CheckDependentFunctionTemplateSpecialization(NewFD, TemplateArgs, | |||
9500 | Previous)) | |||
9501 | NewFD->setInvalidDecl(); | |||
9502 | } else if (isFunctionTemplateSpecialization) { | |||
9503 | if (CurContext->isDependentContext() && CurContext->isRecord() | |||
9504 | && !isFriend) { | |||
9505 | isDependentClassScopeExplicitSpecialization = true; | |||
9506 | } else if (!NewFD->isInvalidDecl() && | |||
9507 | CheckFunctionTemplateSpecialization( | |||
9508 | NewFD, (HasExplicitTemplateArgs ? &TemplateArgs : nullptr), | |||
9509 | Previous)) | |||
9510 | NewFD->setInvalidDecl(); | |||
9511 | ||||
9512 | // C++ [dcl.stc]p1: | |||
9513 | // A storage-class-specifier shall not be specified in an explicit | |||
9514 | // specialization (14.7.3) | |||
9515 | FunctionTemplateSpecializationInfo *Info = | |||
9516 | NewFD->getTemplateSpecializationInfo(); | |||
9517 | if (Info && SC != SC_None) { | |||
9518 | if (SC != Info->getTemplate()->getTemplatedDecl()->getStorageClass()) | |||
9519 | Diag(NewFD->getLocation(), | |||
9520 | diag::err_explicit_specialization_inconsistent_storage_class) | |||
9521 | << SC | |||
9522 | << FixItHint::CreateRemoval( | |||
9523 | D.getDeclSpec().getStorageClassSpecLoc()); | |||
9524 | ||||
9525 | else | |||
9526 | Diag(NewFD->getLocation(), | |||
9527 | diag::ext_explicit_specialization_storage_class) | |||
9528 | << FixItHint::CreateRemoval( | |||
9529 | D.getDeclSpec().getStorageClassSpecLoc()); | |||
9530 | } | |||
9531 | } else if (isMemberSpecialization && isa<CXXMethodDecl>(NewFD)) { | |||
9532 | if (CheckMemberSpecialization(NewFD, Previous)) | |||
9533 | NewFD->setInvalidDecl(); | |||
9534 | } | |||
9535 | ||||
9536 | // Perform semantic checking on the function declaration. | |||
9537 | if (!isDependentClassScopeExplicitSpecialization) { | |||
9538 | if (!NewFD->isInvalidDecl() && NewFD->isMain()) | |||
9539 | CheckMain(NewFD, D.getDeclSpec()); | |||
9540 | ||||
9541 | if (!NewFD->isInvalidDecl() && NewFD->isMSVCRTEntryPoint()) | |||
9542 | CheckMSVCRTEntryPoint(NewFD); | |||
9543 | ||||
9544 | if (!NewFD->isInvalidDecl()) | |||
9545 | D.setRedeclaration(CheckFunctionDeclaration(S, NewFD, Previous, | |||
9546 | isMemberSpecialization)); | |||
9547 | else if (!Previous.empty()) | |||
9548 | // Recover gracefully from an invalid redeclaration. | |||
9549 | D.setRedeclaration(true); | |||
9550 | } | |||
9551 | ||||
9552 | assert((NewFD->isInvalidDecl() || !D.isRedeclaration() ||(((NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous .getResultKind() != LookupResult::FoundOverloaded) && "previous declaration set still overloaded") ? static_cast< void> (0) : __assert_fail ("(NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous.getResultKind() != LookupResult::FoundOverloaded) && \"previous declaration set still overloaded\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9554, __PRETTY_FUNCTION__)) | |||
9553 | Previous.getResultKind() != LookupResult::FoundOverloaded) &&(((NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous .getResultKind() != LookupResult::FoundOverloaded) && "previous declaration set still overloaded") ? static_cast< void> (0) : __assert_fail ("(NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous.getResultKind() != LookupResult::FoundOverloaded) && \"previous declaration set still overloaded\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9554, __PRETTY_FUNCTION__)) | |||
9554 | "previous declaration set still overloaded")(((NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous .getResultKind() != LookupResult::FoundOverloaded) && "previous declaration set still overloaded") ? static_cast< void> (0) : __assert_fail ("(NewFD->isInvalidDecl() || !D.isRedeclaration() || Previous.getResultKind() != LookupResult::FoundOverloaded) && \"previous declaration set still overloaded\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 9554, __PRETTY_FUNCTION__)); | |||
9555 | ||||
9556 | NamedDecl *PrincipalDecl = (FunctionTemplate | |||
9557 | ? cast<NamedDecl>(FunctionTemplate) | |||
9558 | : NewFD); | |||
9559 | ||||
9560 | if (isFriend && NewFD->getPreviousDecl()) { | |||
9561 | AccessSpecifier Access = AS_public; | |||
9562 | if (!NewFD->isInvalidDecl()) | |||
9563 | Access = NewFD->getPreviousDecl()->getAccess(); | |||
9564 | ||||
9565 | NewFD->setAccess(Access); | |||
9566 | if (FunctionTemplate) FunctionTemplate->setAccess(Access); | |||
9567 | } | |||
9568 | ||||
9569 | if (NewFD->isOverloadedOperator() && !DC->isRecord() && | |||
9570 | PrincipalDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary)) | |||
9571 | PrincipalDecl->setNonMemberOperator(); | |||
9572 | ||||
9573 | // If we have a function template, check the template parameter | |||
9574 | // list. This will check and merge default template arguments. | |||
9575 | if (FunctionTemplate) { | |||
9576 | FunctionTemplateDecl *PrevTemplate = | |||
9577 | FunctionTemplate->getPreviousDecl(); | |||
9578 | CheckTemplateParameterList(FunctionTemplate->getTemplateParameters(), | |||
9579 | PrevTemplate ? PrevTemplate->getTemplateParameters() | |||
9580 | : nullptr, | |||
9581 | D.getDeclSpec().isFriendSpecified() | |||
9582 | ? (D.isFunctionDefinition() | |||
9583 | ? TPC_FriendFunctionTemplateDefinition | |||
9584 | : TPC_FriendFunctionTemplate) | |||
9585 | : (D.getCXXScopeSpec().isSet() && | |||
9586 | DC && DC->isRecord() && | |||
9587 | DC->isDependentContext()) | |||
9588 | ? TPC_ClassTemplateMember | |||
9589 | : TPC_FunctionTemplate); | |||
9590 | } | |||
9591 | ||||
9592 | if (NewFD->isInvalidDecl()) { | |||
9593 | // Ignore all the rest of this. | |||
9594 | } else if (!D.isRedeclaration()) { | |||
9595 | struct ActOnFDArgs ExtraArgs = { S, D, TemplateParamLists, | |||
9596 | AddToScope }; | |||
9597 | // Fake up an access specifier if it's supposed to be a class member. | |||
9598 | if (isa<CXXRecordDecl>(NewFD->getDeclContext())) | |||
9599 | NewFD->setAccess(AS_public); | |||
9600 | ||||
9601 | // Qualified decls generally require a previous declaration. | |||
9602 | if (D.getCXXScopeSpec().isSet()) { | |||
9603 | // ...with the major exception of templated-scope or | |||
9604 | // dependent-scope friend declarations. | |||
9605 | ||||
9606 | // TODO: we currently also suppress this check in dependent | |||
9607 | // contexts because (1) the parameter depth will be off when | |||
9608 | // matching friend templates and (2) we might actually be | |||
9609 | // selecting a friend based on a dependent factor. But there | |||
9610 | // are situations where these conditions don't apply and we | |||
9611 | // can actually do this check immediately. | |||
9612 | // | |||
9613 | // Unless the scope is dependent, it's always an error if qualified | |||
9614 | // redeclaration lookup found nothing at all. Diagnose that now; | |||
9615 | // nothing will diagnose that error later. | |||
9616 | if (isFriend && | |||
9617 | (D.getCXXScopeSpec().getScopeRep()->isDependent() || | |||
9618 | (!Previous.empty() && CurContext->isDependentContext()))) { | |||
9619 | // ignore these | |||
9620 | } else { | |||
9621 | // The user tried to provide an out-of-line definition for a | |||
9622 | // function that is a member of a class or namespace, but there | |||
9623 | // was no such member function declared (C++ [class.mfct]p2, | |||
9624 | // C++ [namespace.memdef]p2). For example: | |||
9625 | // | |||
9626 | // class X { | |||
9627 | // void f() const; | |||
9628 | // }; | |||
9629 | // | |||
9630 | // void X::f() { } // ill-formed | |||
9631 | // | |||
9632 | // Complain about this problem, and attempt to suggest close | |||
9633 | // matches (e.g., those that differ only in cv-qualifiers and | |||
9634 | // whether the parameter types are references). | |||
9635 | ||||
9636 | if (NamedDecl *Result = DiagnoseInvalidRedeclaration( | |||
9637 | *this, Previous, NewFD, ExtraArgs, false, nullptr)) { | |||
9638 | AddToScope = ExtraArgs.AddToScope; | |||
9639 | return Result; | |||
9640 | } | |||
9641 | } | |||
9642 | ||||
9643 | // Unqualified local friend declarations are required to resolve | |||
9644 | // to something. | |||
9645 | } else if (isFriend && cast<CXXRecordDecl>(CurContext)->isLocalClass()) { | |||
9646 | if (NamedDecl *Result = DiagnoseInvalidRedeclaration( | |||
9647 | *this, Previous, NewFD, ExtraArgs, true, S)) { | |||
9648 | AddToScope = ExtraArgs.AddToScope; | |||
9649 | return Result; | |||
9650 | } | |||
9651 | } | |||
9652 | } else if (!D.isFunctionDefinition() && | |||
9653 | isa<CXXMethodDecl>(NewFD) && NewFD->isOutOfLine() && | |||
9654 | !isFriend && !isFunctionTemplateSpecialization && | |||
9655 | !isMemberSpecialization) { | |||
9656 | // An out-of-line member function declaration must also be a | |||
9657 | // definition (C++ [class.mfct]p2). | |||
9658 | // Note that this is not the case for explicit specializations of | |||
9659 | // function templates or member functions of class templates, per | |||
9660 | // C++ [temp.expl.spec]p2. We also allow these declarations as an | |||
9661 | // extension for compatibility with old SWIG code which likes to | |||
9662 | // generate them. | |||
9663 | Diag(NewFD->getLocation(), diag::ext_out_of_line_declaration) | |||
9664 | << D.getCXXScopeSpec().getRange(); | |||
9665 | } | |||
9666 | } | |||
9667 | ||||
9668 | // If this is the first declaration of a library builtin function, add | |||
9669 | // attributes as appropriate. | |||
9670 | if (!D.isRedeclaration() && | |||
9671 | NewFD->getDeclContext()->getRedeclContext()->isFileContext()) { | |||
9672 | if (IdentifierInfo *II = Previous.getLookupName().getAsIdentifierInfo()) { | |||
9673 | if (unsigned BuiltinID = II->getBuiltinID()) { | |||
9674 | if (NewFD->getLanguageLinkage() == CLanguageLinkage) { | |||
9675 | // Validate the type matches unless this builtin is specified as | |||
9676 | // matching regardless of its declared type. | |||
9677 | if (Context.BuiltinInfo.allowTypeMismatch(BuiltinID)) { | |||
9678 | NewFD->addAttr(BuiltinAttr::CreateImplicit(Context, BuiltinID)); | |||
9679 | } else { | |||
9680 | ASTContext::GetBuiltinTypeError Error; | |||
9681 | LookupNecessaryTypesForBuiltin(S, BuiltinID); | |||
9682 | QualType BuiltinType = Context.GetBuiltinType(BuiltinID, Error); | |||
9683 | ||||
9684 | if (!Error && !BuiltinType.isNull() && | |||
9685 | Context.hasSameFunctionTypeIgnoringExceptionSpec( | |||
9686 | NewFD->getType(), BuiltinType)) | |||
9687 | NewFD->addAttr(BuiltinAttr::CreateImplicit(Context, BuiltinID)); | |||
9688 | } | |||
9689 | } else if (BuiltinID == Builtin::BI__GetExceptionInfo && | |||
9690 | Context.getTargetInfo().getCXXABI().isMicrosoft()) { | |||
9691 | // FIXME: We should consider this a builtin only in the std namespace. | |||
9692 | NewFD->addAttr(BuiltinAttr::CreateImplicit(Context, BuiltinID)); | |||
9693 | } | |||
9694 | } | |||
9695 | } | |||
9696 | } | |||
9697 | ||||
9698 | ProcessPragmaWeak(S, NewFD); | |||
9699 | checkAttributesAfterMerging(*this, *NewFD); | |||
9700 | ||||
9701 | AddKnownFunctionAttributes(NewFD); | |||
9702 | ||||
9703 | if (NewFD->hasAttr<OverloadableAttr>() && | |||
9704 | !NewFD->getType()->getAs<FunctionProtoType>()) { | |||
9705 | Diag(NewFD->getLocation(), | |||
9706 | diag::err_attribute_overloadable_no_prototype) | |||
9707 | << NewFD; | |||
9708 | ||||
9709 | // Turn this into a variadic function with no parameters. | |||
9710 | const FunctionType *FT = NewFD->getType()->getAs<FunctionType>(); | |||
9711 | FunctionProtoType::ExtProtoInfo EPI( | |||
9712 | Context.getDefaultCallingConvention(true, false)); | |||
9713 | EPI.Variadic = true; | |||
9714 | EPI.ExtInfo = FT->getExtInfo(); | |||
9715 | ||||
9716 | QualType R = Context.getFunctionType(FT->getReturnType(), None, EPI); | |||
9717 | NewFD->setType(R); | |||
9718 | } | |||
9719 | ||||
9720 | // If there's a #pragma GCC visibility in scope, and this isn't a class | |||
9721 | // member, set the visibility of this function. | |||
9722 | if (!DC->isRecord() && NewFD->isExternallyVisible()) | |||
9723 | AddPushedVisibilityAttribute(NewFD); | |||
9724 | ||||
9725 | // If there's a #pragma clang arc_cf_code_audited in scope, consider | |||
9726 | // marking the function. | |||
9727 | AddCFAuditedAttribute(NewFD); | |||
9728 | ||||
9729 | // If this is a function definition, check if we have to apply optnone due to | |||
9730 | // a pragma. | |||
9731 | if(D.isFunctionDefinition()) | |||
9732 | AddRangeBasedOptnone(NewFD); | |||
9733 | ||||
9734 | // If this is the first declaration of an extern C variable, update | |||
9735 | // the map of such variables. | |||
9736 | if (NewFD->isFirstDecl() && !NewFD->isInvalidDecl() && | |||
9737 | isIncompleteDeclExternC(*this, NewFD)) | |||
9738 | RegisterLocallyScopedExternCDecl(NewFD, S); | |||
9739 | ||||
9740 | // Set this FunctionDecl's range up to the right paren. | |||
9741 | NewFD->setRangeEnd(D.getSourceRange().getEnd()); | |||
9742 | ||||
9743 | if (D.isRedeclaration() && !Previous.empty()) { | |||
9744 | NamedDecl *Prev = Previous.getRepresentativeDecl(); | |||
9745 | checkDLLAttributeRedeclaration(*this, Prev, NewFD, | |||
9746 | isMemberSpecialization || | |||
9747 | isFunctionTemplateSpecialization, | |||
9748 | D.isFunctionDefinition()); | |||
9749 | } | |||
9750 | ||||
9751 | if (getLangOpts().CUDA) { | |||
9752 | IdentifierInfo *II = NewFD->getIdentifier(); | |||
9753 | if (II && II->isStr(getCudaConfigureFuncName()) && | |||
9754 | !NewFD->isInvalidDecl() && | |||
9755 | NewFD->getDeclContext()->getRedeclContext()->isTranslationUnit()) { | |||
9756 | if (!R->getAs<FunctionType>()->getReturnType()->isScalarType()) | |||
9757 | Diag(NewFD->getLocation(), diag::err_config_scalar_return) | |||
9758 | << getCudaConfigureFuncName(); | |||
9759 | Context.setcudaConfigureCallDecl(NewFD); | |||
9760 | } | |||
9761 | ||||
9762 | // Variadic functions, other than a *declaration* of printf, are not allowed | |||
9763 | // in device-side CUDA code, unless someone passed | |||
9764 | // -fcuda-allow-variadic-functions. | |||
9765 | if (!getLangOpts().CUDAAllowVariadicFunctions && NewFD->isVariadic() && | |||
9766 | (NewFD->hasAttr<CUDADeviceAttr>() || | |||
9767 | NewFD->hasAttr<CUDAGlobalAttr>()) && | |||
9768 | !(II && II->isStr("printf") && NewFD->isExternC() && | |||
9769 | !D.isFunctionDefinition())) { | |||
9770 | Diag(NewFD->getLocation(), diag::err_variadic_device_fn); | |||
9771 | } | |||
9772 | } | |||
9773 | ||||
9774 | MarkUnusedFileScopedDecl(NewFD); | |||
9775 | ||||
9776 | ||||
9777 | ||||
9778 | if (getLangOpts().OpenCL && NewFD->hasAttr<OpenCLKernelAttr>()) { | |||
9779 | // OpenCL v1.2 s6.8 static is invalid for kernel functions. | |||
9780 | if ((getLangOpts().OpenCLVersion >= 120) | |||
9781 | && (SC == SC_Static)) { | |||
9782 | Diag(D.getIdentifierLoc(), diag::err_static_kernel); | |||
9783 | D.setInvalidType(); | |||
9784 | } | |||
9785 | ||||
9786 | // OpenCL v1.2, s6.9 -- Kernels can only have return type void. | |||
9787 | if (!NewFD->getReturnType()->isVoidType()) { | |||
9788 | SourceRange RTRange = NewFD->getReturnTypeSourceRange(); | |||
9789 | Diag(D.getIdentifierLoc(), diag::err_expected_kernel_void_return_type) | |||
9790 | << (RTRange.isValid() ? FixItHint::CreateReplacement(RTRange, "void") | |||
9791 | : FixItHint()); | |||
9792 | D.setInvalidType(); | |||
9793 | } | |||
9794 | ||||
9795 | llvm::SmallPtrSet<const Type *, 16> ValidTypes; | |||
9796 | for (auto Param : NewFD->parameters()) | |||
9797 | checkIsValidOpenCLKernelParameter(*this, D, Param, ValidTypes); | |||
9798 | ||||
9799 | if (getLangOpts().OpenCLCPlusPlus) { | |||
9800 | if (DC->isRecord()) { | |||
9801 | Diag(D.getIdentifierLoc(), diag::err_method_kernel); | |||
9802 | D.setInvalidType(); | |||
9803 | } | |||
9804 | if (FunctionTemplate) { | |||
9805 | Diag(D.getIdentifierLoc(), diag::err_template_kernel); | |||
9806 | D.setInvalidType(); | |||
9807 | } | |||
9808 | } | |||
9809 | } | |||
9810 | ||||
9811 | if (getLangOpts().CPlusPlus) { | |||
9812 | if (FunctionTemplate) { | |||
9813 | if (NewFD->isInvalidDecl()) | |||
9814 | FunctionTemplate->setInvalidDecl(); | |||
9815 | return FunctionTemplate; | |||
9816 | } | |||
9817 | ||||
9818 | if (isMemberSpecialization && !NewFD->isInvalidDecl()) | |||
9819 | CompleteMemberSpecialization(NewFD, Previous); | |||
9820 | } | |||
9821 | ||||
9822 | for (const ParmVarDecl *Param : NewFD->parameters()) { | |||
9823 | QualType PT = Param->getType(); | |||
9824 | ||||
9825 | // OpenCL 2.0 pipe restrictions forbids pipe packet types to be non-value | |||
9826 | // types. | |||
9827 | if (getLangOpts().OpenCLVersion >= 200 || getLangOpts().OpenCLCPlusPlus) { | |||
9828 | if(const PipeType *PipeTy = PT->getAs<PipeType>()) { | |||
9829 | QualType ElemTy = PipeTy->getElementType(); | |||
9830 | if (ElemTy->isReferenceType() || ElemTy->isPointerType()) { | |||
9831 | Diag(Param->getTypeSpecStartLoc(), diag::err_reference_pipe_type ); | |||
9832 | D.setInvalidType(); | |||
9833 | } | |||
9834 | } | |||
9835 | } | |||
9836 | } | |||
9837 | ||||
9838 | // Here we have an function template explicit specialization at class scope. | |||
9839 | // The actual specialization will be postponed to template instatiation | |||
9840 | // time via the ClassScopeFunctionSpecializationDecl node. | |||
9841 | if (isDependentClassScopeExplicitSpecialization) { | |||
9842 | ClassScopeFunctionSpecializationDecl *NewSpec = | |||
9843 | ClassScopeFunctionSpecializationDecl::Create( | |||
9844 | Context, CurContext, NewFD->getLocation(), | |||
9845 | cast<CXXMethodDecl>(NewFD), | |||
9846 | HasExplicitTemplateArgs, TemplateArgs); | |||
9847 | CurContext->addDecl(NewSpec); | |||
9848 | AddToScope = false; | |||
9849 | } | |||
9850 | ||||
9851 | // Diagnose availability attributes. Availability cannot be used on functions | |||
9852 | // that are run during load/unload. | |||
9853 | if (const auto *attr = NewFD->getAttr<AvailabilityAttr>()) { | |||
9854 | if (NewFD->hasAttr<ConstructorAttr>()) { | |||
9855 | Diag(attr->getLocation(), diag::warn_availability_on_static_initializer) | |||
9856 | << 1; | |||
9857 | NewFD->dropAttr<AvailabilityAttr>(); | |||
9858 | } | |||
9859 | if (NewFD->hasAttr<DestructorAttr>()) { | |||
9860 | Diag(attr->getLocation(), diag::warn_availability_on_static_initializer) | |||
9861 | << 2; | |||
9862 | NewFD->dropAttr<AvailabilityAttr>(); | |||
9863 | } | |||
9864 | } | |||
9865 | ||||
9866 | // Diagnose no_builtin attribute on function declaration that are not a | |||
9867 | // definition. | |||
9868 | // FIXME: We should really be doing this in | |||
9869 | // SemaDeclAttr.cpp::handleNoBuiltinAttr, unfortunately we only have access to | |||
9870 | // the FunctionDecl and at this point of the code | |||
9871 | // FunctionDecl::isThisDeclarationADefinition() which always returns `false` | |||
9872 | // because Sema::ActOnStartOfFunctionDef has not been called yet. | |||
9873 | if (const auto *NBA = NewFD->getAttr<NoBuiltinAttr>()) | |||
9874 | switch (D.getFunctionDefinitionKind()) { | |||
9875 | case FunctionDefinitionKind::Defaulted: | |||
9876 | case FunctionDefinitionKind::Deleted: | |||
9877 | Diag(NBA->getLocation(), | |||
9878 | diag::err_attribute_no_builtin_on_defaulted_deleted_function) | |||
9879 | << NBA->getSpelling(); | |||
9880 | break; | |||
9881 | case FunctionDefinitionKind::Declaration: | |||
9882 | Diag(NBA->getLocation(), diag::err_attribute_no_builtin_on_non_definition) | |||
9883 | << NBA->getSpelling(); | |||
9884 | break; | |||
9885 | case FunctionDefinitionKind::Definition: | |||
9886 | break; | |||
9887 | } | |||
9888 | ||||
9889 | return NewFD; | |||
9890 | } | |||
9891 | ||||
9892 | /// Return a CodeSegAttr from a containing class. The Microsoft docs say | |||
9893 | /// when __declspec(code_seg) "is applied to a class, all member functions of | |||
9894 | /// the class and nested classes -- this includes compiler-generated special | |||
9895 | /// member functions -- are put in the specified segment." | |||
9896 | /// The actual behavior is a little more complicated. The Microsoft compiler | |||
9897 | /// won't check outer classes if there is an active value from #pragma code_seg. | |||
9898 | /// The CodeSeg is always applied from the direct parent but only from outer | |||
9899 | /// classes when the #pragma code_seg stack is empty. See: | |||
9900 | /// https://reviews.llvm.org/D22931, the Microsoft feedback page is no longer | |||
9901 | /// available since MS has removed the page. | |||
9902 | static Attr *getImplicitCodeSegAttrFromClass(Sema &S, const FunctionDecl *FD) { | |||
9903 | const auto *Method = dyn_cast<CXXMethodDecl>(FD); | |||
9904 | if (!Method) | |||
9905 | return nullptr; | |||
9906 | const CXXRecordDecl *Parent = Method->getParent(); | |||
9907 | if (const auto *SAttr = Parent->getAttr<CodeSegAttr>()) { | |||
9908 | Attr *NewAttr = SAttr->clone(S.getASTContext()); | |||
9909 | NewAttr->setImplicit(true); | |||
9910 | return NewAttr; | |||
9911 | } | |||
9912 | ||||
9913 | // The Microsoft compiler won't check outer classes for the CodeSeg | |||
9914 | // when the #pragma code_seg stack is active. | |||
9915 | if (S.CodeSegStack.CurrentValue) | |||
9916 | return nullptr; | |||
9917 | ||||
9918 | while ((Parent = dyn_cast<CXXRecordDecl>(Parent->getParent()))) { | |||
9919 | if (const auto *SAttr = Parent->getAttr<CodeSegAttr>()) { | |||
9920 | Attr *NewAttr = SAttr->clone(S.getASTContext()); | |||
9921 | NewAttr->setImplicit(true); | |||
9922 | return NewAttr; | |||
9923 | } | |||
9924 | } | |||
9925 | return nullptr; | |||
9926 | } | |||
9927 | ||||
9928 | /// Returns an implicit CodeSegAttr if a __declspec(code_seg) is found on a | |||
9929 | /// containing class. Otherwise it will return implicit SectionAttr if the | |||
9930 | /// function is a definition and there is an active value on CodeSegStack | |||
9931 | /// (from the current #pragma code-seg value). | |||
9932 | /// | |||
9933 | /// \param FD Function being declared. | |||
9934 | /// \param IsDefinition Whether it is a definition or just a declarartion. | |||
9935 | /// \returns A CodeSegAttr or SectionAttr to apply to the function or | |||
9936 | /// nullptr if no attribute should be added. | |||
9937 | Attr *Sema::getImplicitCodeSegOrSectionAttrForFunction(const FunctionDecl *FD, | |||
9938 | bool IsDefinition) { | |||
9939 | if (Attr *A = getImplicitCodeSegAttrFromClass(*this, FD)) | |||
9940 | return A; | |||
9941 | if (!FD->hasAttr<SectionAttr>() && IsDefinition && | |||
9942 | CodeSegStack.CurrentValue) | |||
9943 | return SectionAttr::CreateImplicit( | |||
9944 | getASTContext(), CodeSegStack.CurrentValue->getString(), | |||
9945 | CodeSegStack.CurrentPragmaLocation, AttributeCommonInfo::AS_Pragma, | |||
9946 | SectionAttr::Declspec_allocate); | |||
9947 | return nullptr; | |||
9948 | } | |||
9949 | ||||
9950 | /// Determines if we can perform a correct type check for \p D as a | |||
9951 | /// redeclaration of \p PrevDecl. If not, we can generally still perform a | |||
9952 | /// best-effort check. | |||
9953 | /// | |||
9954 | /// \param NewD The new declaration. | |||
9955 | /// \param OldD The old declaration. | |||
9956 | /// \param NewT The portion of the type of the new declaration to check. | |||
9957 | /// \param OldT The portion of the type of the old declaration to check. | |||
9958 | bool Sema::canFullyTypeCheckRedeclaration(ValueDecl *NewD, ValueDecl *OldD, | |||
9959 | QualType NewT, QualType OldT) { | |||
9960 | if (!NewD->getLexicalDeclContext()->isDependentContext()) | |||
9961 | return true; | |||
9962 | ||||
9963 | // For dependently-typed local extern declarations and friends, we can't | |||
9964 | // perform a correct type check in general until instantiation: | |||
9965 | // | |||
9966 | // int f(); | |||
9967 | // template<typename T> void g() { T f(); } | |||
9968 | // | |||
9969 | // (valid if g() is only instantiated with T = int). | |||
9970 | if (NewT->isDependentType() && | |||
9971 | (NewD->isLocalExternDecl() || NewD->getFriendObjectKind())) | |||
9972 | return false; | |||
9973 | ||||
9974 | // Similarly, if the previous declaration was a dependent local extern | |||
9975 | // declaration, we don't really know its type yet. | |||
9976 | if (OldT->isDependentType() && OldD->isLocalExternDecl()) | |||
9977 | return false; | |||
9978 | ||||
9979 | return true; | |||
9980 | } | |||
9981 | ||||
9982 | /// Checks if the new declaration declared in dependent context must be | |||
9983 | /// put in the same redeclaration chain as the specified declaration. | |||
9984 | /// | |||
9985 | /// \param D Declaration that is checked. | |||
9986 | /// \param PrevDecl Previous declaration found with proper lookup method for the | |||
9987 | /// same declaration name. | |||
9988 | /// \returns True if D must be added to the redeclaration chain which PrevDecl | |||
9989 | /// belongs to. | |||
9990 | /// | |||
9991 | bool Sema::shouldLinkDependentDeclWithPrevious(Decl *D, Decl *PrevDecl) { | |||
9992 | if (!D->getLexicalDeclContext()->isDependentContext()) | |||
9993 | return true; | |||
9994 | ||||
9995 | // Don't chain dependent friend function definitions until instantiation, to | |||
9996 | // permit cases like | |||
9997 | // | |||
9998 | // void func(); | |||
9999 | // template<typename T> class C1 { friend void func() {} }; | |||
10000 | // template<typename T> class C2 { friend void func() {} }; | |||
10001 | // | |||
10002 | // ... which is valid if only one of C1 and C2 is ever instantiated. | |||
10003 | // | |||
10004 | // FIXME: This need only apply to function definitions. For now, we proxy | |||
10005 | // this by checking for a file-scope function. We do not want this to apply | |||
10006 | // to friend declarations nominating member functions, because that gets in | |||
10007 | // the way of access checks. | |||
10008 | if (D->getFriendObjectKind() && D->getDeclContext()->isFileContext()) | |||
10009 | return false; | |||
10010 | ||||
10011 | auto *VD = dyn_cast<ValueDecl>(D); | |||
10012 | auto *PrevVD = dyn_cast<ValueDecl>(PrevDecl); | |||
10013 | return !VD || !PrevVD || | |||
10014 | canFullyTypeCheckRedeclaration(VD, PrevVD, VD->getType(), | |||
10015 | PrevVD->getType()); | |||
10016 | } | |||
10017 | ||||
10018 | /// Check the target attribute of the function for MultiVersion | |||
10019 | /// validity. | |||
10020 | /// | |||
10021 | /// Returns true if there was an error, false otherwise. | |||
10022 | static bool CheckMultiVersionValue(Sema &S, const FunctionDecl *FD) { | |||
10023 | const auto *TA = FD->getAttr<TargetAttr>(); | |||
10024 | assert(TA && "MultiVersion Candidate requires a target attribute")((TA && "MultiVersion Candidate requires a target attribute" ) ? static_cast<void> (0) : __assert_fail ("TA && \"MultiVersion Candidate requires a target attribute\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10024, __PRETTY_FUNCTION__)); | |||
10025 | ParsedTargetAttr ParseInfo = TA->parse(); | |||
10026 | const TargetInfo &TargetInfo = S.Context.getTargetInfo(); | |||
10027 | enum ErrType { Feature = 0, Architecture = 1 }; | |||
10028 | ||||
10029 | if (!ParseInfo.Architecture.empty() && | |||
10030 | !TargetInfo.validateCpuIs(ParseInfo.Architecture)) { | |||
10031 | S.Diag(FD->getLocation(), diag::err_bad_multiversion_option) | |||
10032 | << Architecture << ParseInfo.Architecture; | |||
10033 | return true; | |||
10034 | } | |||
10035 | ||||
10036 | for (const auto &Feat : ParseInfo.Features) { | |||
10037 | auto BareFeat = StringRef{Feat}.substr(1); | |||
10038 | if (Feat[0] == '-') { | |||
10039 | S.Diag(FD->getLocation(), diag::err_bad_multiversion_option) | |||
10040 | << Feature << ("no-" + BareFeat).str(); | |||
10041 | return true; | |||
10042 | } | |||
10043 | ||||
10044 | if (!TargetInfo.validateCpuSupports(BareFeat) || | |||
10045 | !TargetInfo.isValidFeatureName(BareFeat)) { | |||
10046 | S.Diag(FD->getLocation(), diag::err_bad_multiversion_option) | |||
10047 | << Feature << BareFeat; | |||
10048 | return true; | |||
10049 | } | |||
10050 | } | |||
10051 | return false; | |||
10052 | } | |||
10053 | ||||
10054 | // Provide a white-list of attributes that are allowed to be combined with | |||
10055 | // multiversion functions. | |||
10056 | static bool AttrCompatibleWithMultiVersion(attr::Kind Kind, | |||
10057 | MultiVersionKind MVType) { | |||
10058 | // Note: this list/diagnosis must match the list in | |||
10059 | // checkMultiversionAttributesAllSame. | |||
10060 | switch (Kind) { | |||
10061 | default: | |||
10062 | return false; | |||
10063 | case attr::Used: | |||
10064 | return MVType == MultiVersionKind::Target; | |||
10065 | case attr::NonNull: | |||
10066 | case attr::NoThrow: | |||
10067 | return true; | |||
10068 | } | |||
10069 | } | |||
10070 | ||||
10071 | static bool checkNonMultiVersionCompatAttributes(Sema &S, | |||
10072 | const FunctionDecl *FD, | |||
10073 | const FunctionDecl *CausedFD, | |||
10074 | MultiVersionKind MVType) { | |||
10075 | bool IsCPUSpecificCPUDispatchMVType = | |||
10076 | MVType == MultiVersionKind::CPUDispatch || | |||
10077 | MVType == MultiVersionKind::CPUSpecific; | |||
10078 | const auto Diagnose = [FD, CausedFD, IsCPUSpecificCPUDispatchMVType]( | |||
10079 | Sema &S, const Attr *A) { | |||
10080 | S.Diag(FD->getLocation(), diag::err_multiversion_disallowed_other_attr) | |||
10081 | << IsCPUSpecificCPUDispatchMVType << A; | |||
10082 | if (CausedFD) | |||
10083 | S.Diag(CausedFD->getLocation(), diag::note_multiversioning_caused_here); | |||
10084 | return true; | |||
10085 | }; | |||
10086 | ||||
10087 | for (const Attr *A : FD->attrs()) { | |||
10088 | switch (A->getKind()) { | |||
10089 | case attr::CPUDispatch: | |||
10090 | case attr::CPUSpecific: | |||
10091 | if (MVType != MultiVersionKind::CPUDispatch && | |||
10092 | MVType != MultiVersionKind::CPUSpecific) | |||
10093 | return Diagnose(S, A); | |||
10094 | break; | |||
10095 | case attr::Target: | |||
10096 | if (MVType != MultiVersionKind::Target) | |||
10097 | return Diagnose(S, A); | |||
10098 | break; | |||
10099 | default: | |||
10100 | if (!AttrCompatibleWithMultiVersion(A->getKind(), MVType)) | |||
10101 | return Diagnose(S, A); | |||
10102 | break; | |||
10103 | } | |||
10104 | } | |||
10105 | return false; | |||
10106 | } | |||
10107 | ||||
10108 | bool Sema::areMultiversionVariantFunctionsCompatible( | |||
10109 | const FunctionDecl *OldFD, const FunctionDecl *NewFD, | |||
10110 | const PartialDiagnostic &NoProtoDiagID, | |||
10111 | const PartialDiagnosticAt &NoteCausedDiagIDAt, | |||
10112 | const PartialDiagnosticAt &NoSupportDiagIDAt, | |||
10113 | const PartialDiagnosticAt &DiffDiagIDAt, bool TemplatesSupported, | |||
10114 | bool ConstexprSupported, bool CLinkageMayDiffer) { | |||
10115 | enum DoesntSupport { | |||
10116 | FuncTemplates = 0, | |||
10117 | VirtFuncs = 1, | |||
10118 | DeducedReturn = 2, | |||
10119 | Constructors = 3, | |||
10120 | Destructors = 4, | |||
10121 | DeletedFuncs = 5, | |||
10122 | DefaultedFuncs = 6, | |||
10123 | ConstexprFuncs = 7, | |||
10124 | ConstevalFuncs = 8, | |||
10125 | }; | |||
10126 | enum Different { | |||
10127 | CallingConv = 0, | |||
10128 | ReturnType = 1, | |||
10129 | ConstexprSpec = 2, | |||
10130 | InlineSpec = 3, | |||
10131 | StorageClass = 4, | |||
10132 | Linkage = 5, | |||
10133 | }; | |||
10134 | ||||
10135 | if (NoProtoDiagID.getDiagID() != 0 && OldFD && | |||
10136 | !OldFD->getType()->getAs<FunctionProtoType>()) { | |||
10137 | Diag(OldFD->getLocation(), NoProtoDiagID); | |||
10138 | Diag(NoteCausedDiagIDAt.first, NoteCausedDiagIDAt.second); | |||
10139 | return true; | |||
10140 | } | |||
10141 | ||||
10142 | if (NoProtoDiagID.getDiagID() != 0 && | |||
10143 | !NewFD->getType()->getAs<FunctionProtoType>()) | |||
10144 | return Diag(NewFD->getLocation(), NoProtoDiagID); | |||
10145 | ||||
10146 | if (!TemplatesSupported && | |||
10147 | NewFD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate) | |||
10148 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10149 | << FuncTemplates; | |||
10150 | ||||
10151 | if (const auto *NewCXXFD = dyn_cast<CXXMethodDecl>(NewFD)) { | |||
10152 | if (NewCXXFD->isVirtual()) | |||
10153 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10154 | << VirtFuncs; | |||
10155 | ||||
10156 | if (isa<CXXConstructorDecl>(NewCXXFD)) | |||
10157 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10158 | << Constructors; | |||
10159 | ||||
10160 | if (isa<CXXDestructorDecl>(NewCXXFD)) | |||
10161 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10162 | << Destructors; | |||
10163 | } | |||
10164 | ||||
10165 | if (NewFD->isDeleted()) | |||
10166 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10167 | << DeletedFuncs; | |||
10168 | ||||
10169 | if (NewFD->isDefaulted()) | |||
10170 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10171 | << DefaultedFuncs; | |||
10172 | ||||
10173 | if (!ConstexprSupported && NewFD->isConstexpr()) | |||
10174 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10175 | << (NewFD->isConsteval() ? ConstevalFuncs : ConstexprFuncs); | |||
10176 | ||||
10177 | QualType NewQType = Context.getCanonicalType(NewFD->getType()); | |||
10178 | const auto *NewType = cast<FunctionType>(NewQType); | |||
10179 | QualType NewReturnType = NewType->getReturnType(); | |||
10180 | ||||
10181 | if (NewReturnType->isUndeducedType()) | |||
10182 | return Diag(NoSupportDiagIDAt.first, NoSupportDiagIDAt.second) | |||
10183 | << DeducedReturn; | |||
10184 | ||||
10185 | // Ensure the return type is identical. | |||
10186 | if (OldFD) { | |||
10187 | QualType OldQType = Context.getCanonicalType(OldFD->getType()); | |||
10188 | const auto *OldType = cast<FunctionType>(OldQType); | |||
10189 | FunctionType::ExtInfo OldTypeInfo = OldType->getExtInfo(); | |||
10190 | FunctionType::ExtInfo NewTypeInfo = NewType->getExtInfo(); | |||
10191 | ||||
10192 | if (OldTypeInfo.getCC() != NewTypeInfo.getCC()) | |||
10193 | return Diag(DiffDiagIDAt.first, DiffDiagIDAt.second) << CallingConv; | |||
10194 | ||||
10195 | QualType OldReturnType = OldType->getReturnType(); | |||
10196 | ||||
10197 | if (OldReturnType != NewReturnType) | |||
10198 | return Diag(DiffDiagIDAt.first, DiffDiagIDAt.second) << ReturnType; | |||
10199 | ||||
10200 | if (OldFD->getConstexprKind() != NewFD->getConstexprKind()) | |||
10201 | return Diag(DiffDiagIDAt.first, DiffDiagIDAt.second) << ConstexprSpec; | |||
10202 | ||||
10203 | if (OldFD->isInlineSpecified() != NewFD->isInlineSpecified()) | |||
10204 | return Diag(DiffDiagIDAt.first, DiffDiagIDAt.second) << InlineSpec; | |||
10205 | ||||
10206 | if (OldFD->getStorageClass() != NewFD->getStorageClass()) | |||
10207 | return Diag(DiffDiagIDAt.first, DiffDiagIDAt.second) << StorageClass; | |||
10208 | ||||
10209 | if (!CLinkageMayDiffer && OldFD->isExternC() != NewFD->isExternC()) | |||
10210 | return Diag(DiffDiagIDAt.first, DiffDiagIDAt.second) << Linkage; | |||
10211 | ||||
10212 | if (CheckEquivalentExceptionSpec( | |||
10213 | OldFD->getType()->getAs<FunctionProtoType>(), OldFD->getLocation(), | |||
10214 | NewFD->getType()->getAs<FunctionProtoType>(), NewFD->getLocation())) | |||
10215 | return true; | |||
10216 | } | |||
10217 | return false; | |||
10218 | } | |||
10219 | ||||
10220 | static bool CheckMultiVersionAdditionalRules(Sema &S, const FunctionDecl *OldFD, | |||
10221 | const FunctionDecl *NewFD, | |||
10222 | bool CausesMV, | |||
10223 | MultiVersionKind MVType) { | |||
10224 | if (!S.getASTContext().getTargetInfo().supportsMultiVersioning()) { | |||
10225 | S.Diag(NewFD->getLocation(), diag::err_multiversion_not_supported); | |||
10226 | if (OldFD) | |||
10227 | S.Diag(OldFD->getLocation(), diag::note_previous_declaration); | |||
10228 | return true; | |||
10229 | } | |||
10230 | ||||
10231 | bool IsCPUSpecificCPUDispatchMVType = | |||
10232 | MVType == MultiVersionKind::CPUDispatch || | |||
10233 | MVType == MultiVersionKind::CPUSpecific; | |||
10234 | ||||
10235 | if (CausesMV && OldFD && | |||
10236 | checkNonMultiVersionCompatAttributes(S, OldFD, NewFD, MVType)) | |||
10237 | return true; | |||
10238 | ||||
10239 | if (checkNonMultiVersionCompatAttributes(S, NewFD, nullptr, MVType)) | |||
10240 | return true; | |||
10241 | ||||
10242 | // Only allow transition to MultiVersion if it hasn't been used. | |||
10243 | if (OldFD && CausesMV && OldFD->isUsed(false)) | |||
10244 | return S.Diag(NewFD->getLocation(), diag::err_multiversion_after_used); | |||
10245 | ||||
10246 | return S.areMultiversionVariantFunctionsCompatible( | |||
10247 | OldFD, NewFD, S.PDiag(diag::err_multiversion_noproto), | |||
10248 | PartialDiagnosticAt(NewFD->getLocation(), | |||
10249 | S.PDiag(diag::note_multiversioning_caused_here)), | |||
10250 | PartialDiagnosticAt(NewFD->getLocation(), | |||
10251 | S.PDiag(diag::err_multiversion_doesnt_support) | |||
10252 | << IsCPUSpecificCPUDispatchMVType), | |||
10253 | PartialDiagnosticAt(NewFD->getLocation(), | |||
10254 | S.PDiag(diag::err_multiversion_diff)), | |||
10255 | /*TemplatesSupported=*/false, | |||
10256 | /*ConstexprSupported=*/!IsCPUSpecificCPUDispatchMVType, | |||
10257 | /*CLinkageMayDiffer=*/false); | |||
10258 | } | |||
10259 | ||||
10260 | /// Check the validity of a multiversion function declaration that is the | |||
10261 | /// first of its kind. Also sets the multiversion'ness' of the function itself. | |||
10262 | /// | |||
10263 | /// This sets NewFD->isInvalidDecl() to true if there was an error. | |||
10264 | /// | |||
10265 | /// Returns true if there was an error, false otherwise. | |||
10266 | static bool CheckMultiVersionFirstFunction(Sema &S, FunctionDecl *FD, | |||
10267 | MultiVersionKind MVType, | |||
10268 | const TargetAttr *TA) { | |||
10269 | assert(MVType != MultiVersionKind::None &&((MVType != MultiVersionKind::None && "Function lacks multiversion attribute" ) ? static_cast<void> (0) : __assert_fail ("MVType != MultiVersionKind::None && \"Function lacks multiversion attribute\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10270, __PRETTY_FUNCTION__)) | |||
10270 | "Function lacks multiversion attribute")((MVType != MultiVersionKind::None && "Function lacks multiversion attribute" ) ? static_cast<void> (0) : __assert_fail ("MVType != MultiVersionKind::None && \"Function lacks multiversion attribute\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10270, __PRETTY_FUNCTION__)); | |||
10271 | ||||
10272 | // Target only causes MV if it is default, otherwise this is a normal | |||
10273 | // function. | |||
10274 | if (MVType == MultiVersionKind::Target && !TA->isDefaultVersion()) | |||
10275 | return false; | |||
10276 | ||||
10277 | if (MVType == MultiVersionKind::Target && CheckMultiVersionValue(S, FD)) { | |||
10278 | FD->setInvalidDecl(); | |||
10279 | return true; | |||
10280 | } | |||
10281 | ||||
10282 | if (CheckMultiVersionAdditionalRules(S, nullptr, FD, true, MVType)) { | |||
10283 | FD->setInvalidDecl(); | |||
10284 | return true; | |||
10285 | } | |||
10286 | ||||
10287 | FD->setIsMultiVersion(); | |||
10288 | return false; | |||
10289 | } | |||
10290 | ||||
10291 | static bool PreviousDeclsHaveMultiVersionAttribute(const FunctionDecl *FD) { | |||
10292 | for (const Decl *D = FD->getPreviousDecl(); D; D = D->getPreviousDecl()) { | |||
10293 | if (D->getAsFunction()->getMultiVersionKind() != MultiVersionKind::None) | |||
10294 | return true; | |||
10295 | } | |||
10296 | ||||
10297 | return false; | |||
10298 | } | |||
10299 | ||||
10300 | static bool CheckTargetCausesMultiVersioning( | |||
10301 | Sema &S, FunctionDecl *OldFD, FunctionDecl *NewFD, const TargetAttr *NewTA, | |||
10302 | bool &Redeclaration, NamedDecl *&OldDecl, bool &MergeTypeWithPrevious, | |||
10303 | LookupResult &Previous) { | |||
10304 | const auto *OldTA = OldFD->getAttr<TargetAttr>(); | |||
10305 | ParsedTargetAttr NewParsed = NewTA->parse(); | |||
10306 | // Sort order doesn't matter, it just needs to be consistent. | |||
10307 | llvm::sort(NewParsed.Features); | |||
10308 | ||||
10309 | // If the old decl is NOT MultiVersioned yet, and we don't cause that | |||
10310 | // to change, this is a simple redeclaration. | |||
10311 | if (!NewTA->isDefaultVersion() && | |||
10312 | (!OldTA || OldTA->getFeaturesStr() == NewTA->getFeaturesStr())) | |||
10313 | return false; | |||
10314 | ||||
10315 | // Otherwise, this decl causes MultiVersioning. | |||
10316 | if (!S.getASTContext().getTargetInfo().supportsMultiVersioning()) { | |||
10317 | S.Diag(NewFD->getLocation(), diag::err_multiversion_not_supported); | |||
10318 | S.Diag(OldFD->getLocation(), diag::note_previous_declaration); | |||
10319 | NewFD->setInvalidDecl(); | |||
10320 | return true; | |||
10321 | } | |||
10322 | ||||
10323 | if (CheckMultiVersionAdditionalRules(S, OldFD, NewFD, true, | |||
10324 | MultiVersionKind::Target)) { | |||
10325 | NewFD->setInvalidDecl(); | |||
10326 | return true; | |||
10327 | } | |||
10328 | ||||
10329 | if (CheckMultiVersionValue(S, NewFD)) { | |||
10330 | NewFD->setInvalidDecl(); | |||
10331 | return true; | |||
10332 | } | |||
10333 | ||||
10334 | // If this is 'default', permit the forward declaration. | |||
10335 | if (!OldFD->isMultiVersion() && !OldTA && NewTA->isDefaultVersion()) { | |||
10336 | Redeclaration = true; | |||
10337 | OldDecl = OldFD; | |||
10338 | OldFD->setIsMultiVersion(); | |||
10339 | NewFD->setIsMultiVersion(); | |||
10340 | return false; | |||
10341 | } | |||
10342 | ||||
10343 | if (CheckMultiVersionValue(S, OldFD)) { | |||
10344 | S.Diag(NewFD->getLocation(), diag::note_multiversioning_caused_here); | |||
10345 | NewFD->setInvalidDecl(); | |||
10346 | return true; | |||
10347 | } | |||
10348 | ||||
10349 | ParsedTargetAttr OldParsed = OldTA->parse(std::less<std::string>()); | |||
10350 | ||||
10351 | if (OldParsed == NewParsed) { | |||
10352 | S.Diag(NewFD->getLocation(), diag::err_multiversion_duplicate); | |||
10353 | S.Diag(OldFD->getLocation(), diag::note_previous_declaration); | |||
10354 | NewFD->setInvalidDecl(); | |||
10355 | return true; | |||
10356 | } | |||
10357 | ||||
10358 | for (const auto *FD : OldFD->redecls()) { | |||
10359 | const auto *CurTA = FD->getAttr<TargetAttr>(); | |||
10360 | // We allow forward declarations before ANY multiversioning attributes, but | |||
10361 | // nothing after the fact. | |||
10362 | if (PreviousDeclsHaveMultiVersionAttribute(FD) && | |||
10363 | (!CurTA || CurTA->isInherited())) { | |||
10364 | S.Diag(FD->getLocation(), diag::err_multiversion_required_in_redecl) | |||
10365 | << 0; | |||
10366 | S.Diag(NewFD->getLocation(), diag::note_multiversioning_caused_here); | |||
10367 | NewFD->setInvalidDecl(); | |||
10368 | return true; | |||
10369 | } | |||
10370 | } | |||
10371 | ||||
10372 | OldFD->setIsMultiVersion(); | |||
10373 | NewFD->setIsMultiVersion(); | |||
10374 | Redeclaration = false; | |||
10375 | MergeTypeWithPrevious = false; | |||
10376 | OldDecl = nullptr; | |||
10377 | Previous.clear(); | |||
10378 | return false; | |||
10379 | } | |||
10380 | ||||
10381 | /// Check the validity of a new function declaration being added to an existing | |||
10382 | /// multiversioned declaration collection. | |||
10383 | static bool CheckMultiVersionAdditionalDecl( | |||
10384 | Sema &S, FunctionDecl *OldFD, FunctionDecl *NewFD, | |||
10385 | MultiVersionKind NewMVType, const TargetAttr *NewTA, | |||
10386 | const CPUDispatchAttr *NewCPUDisp, const CPUSpecificAttr *NewCPUSpec, | |||
10387 | bool &Redeclaration, NamedDecl *&OldDecl, bool &MergeTypeWithPrevious, | |||
10388 | LookupResult &Previous) { | |||
10389 | ||||
10390 | MultiVersionKind OldMVType = OldFD->getMultiVersionKind(); | |||
10391 | // Disallow mixing of multiversioning types. | |||
10392 | if ((OldMVType == MultiVersionKind::Target && | |||
10393 | NewMVType != MultiVersionKind::Target) || | |||
10394 | (NewMVType == MultiVersionKind::Target && | |||
10395 | OldMVType != MultiVersionKind::Target)) { | |||
10396 | S.Diag(NewFD->getLocation(), diag::err_multiversion_types_mixed); | |||
10397 | S.Diag(OldFD->getLocation(), diag::note_previous_declaration); | |||
10398 | NewFD->setInvalidDecl(); | |||
10399 | return true; | |||
10400 | } | |||
10401 | ||||
10402 | ParsedTargetAttr NewParsed; | |||
10403 | if (NewTA) { | |||
10404 | NewParsed = NewTA->parse(); | |||
10405 | llvm::sort(NewParsed.Features); | |||
10406 | } | |||
10407 | ||||
10408 | bool UseMemberUsingDeclRules = | |||
10409 | S.CurContext->isRecord() && !NewFD->getFriendObjectKind(); | |||
10410 | ||||
10411 | // Next, check ALL non-overloads to see if this is a redeclaration of a | |||
10412 | // previous member of the MultiVersion set. | |||
10413 | for (NamedDecl *ND : Previous) { | |||
10414 | FunctionDecl *CurFD = ND->getAsFunction(); | |||
10415 | if (!CurFD) | |||
10416 | continue; | |||
10417 | if (S.IsOverload(NewFD, CurFD, UseMemberUsingDeclRules)) | |||
10418 | continue; | |||
10419 | ||||
10420 | if (NewMVType == MultiVersionKind::Target) { | |||
10421 | const auto *CurTA = CurFD->getAttr<TargetAttr>(); | |||
10422 | if (CurTA->getFeaturesStr() == NewTA->getFeaturesStr()) { | |||
10423 | NewFD->setIsMultiVersion(); | |||
10424 | Redeclaration = true; | |||
10425 | OldDecl = ND; | |||
10426 | return false; | |||
10427 | } | |||
10428 | ||||
10429 | ParsedTargetAttr CurParsed = CurTA->parse(std::less<std::string>()); | |||
10430 | if (CurParsed == NewParsed) { | |||
10431 | S.Diag(NewFD->getLocation(), diag::err_multiversion_duplicate); | |||
10432 | S.Diag(CurFD->getLocation(), diag::note_previous_declaration); | |||
10433 | NewFD->setInvalidDecl(); | |||
10434 | return true; | |||
10435 | } | |||
10436 | } else { | |||
10437 | const auto *CurCPUSpec = CurFD->getAttr<CPUSpecificAttr>(); | |||
10438 | const auto *CurCPUDisp = CurFD->getAttr<CPUDispatchAttr>(); | |||
10439 | // Handle CPUDispatch/CPUSpecific versions. | |||
10440 | // Only 1 CPUDispatch function is allowed, this will make it go through | |||
10441 | // the redeclaration errors. | |||
10442 | if (NewMVType == MultiVersionKind::CPUDispatch && | |||
10443 | CurFD->hasAttr<CPUDispatchAttr>()) { | |||
10444 | if (CurCPUDisp->cpus_size() == NewCPUDisp->cpus_size() && | |||
10445 | std::equal( | |||
10446 | CurCPUDisp->cpus_begin(), CurCPUDisp->cpus_end(), | |||
10447 | NewCPUDisp->cpus_begin(), | |||
10448 | [](const IdentifierInfo *Cur, const IdentifierInfo *New) { | |||
10449 | return Cur->getName() == New->getName(); | |||
10450 | })) { | |||
10451 | NewFD->setIsMultiVersion(); | |||
10452 | Redeclaration = true; | |||
10453 | OldDecl = ND; | |||
10454 | return false; | |||
10455 | } | |||
10456 | ||||
10457 | // If the declarations don't match, this is an error condition. | |||
10458 | S.Diag(NewFD->getLocation(), diag::err_cpu_dispatch_mismatch); | |||
10459 | S.Diag(CurFD->getLocation(), diag::note_previous_declaration); | |||
10460 | NewFD->setInvalidDecl(); | |||
10461 | return true; | |||
10462 | } | |||
10463 | if (NewMVType == MultiVersionKind::CPUSpecific && CurCPUSpec) { | |||
10464 | ||||
10465 | if (CurCPUSpec->cpus_size() == NewCPUSpec->cpus_size() && | |||
10466 | std::equal( | |||
10467 | CurCPUSpec->cpus_begin(), CurCPUSpec->cpus_end(), | |||
10468 | NewCPUSpec->cpus_begin(), | |||
10469 | [](const IdentifierInfo *Cur, const IdentifierInfo *New) { | |||
10470 | return Cur->getName() == New->getName(); | |||
10471 | })) { | |||
10472 | NewFD->setIsMultiVersion(); | |||
10473 | Redeclaration = true; | |||
10474 | OldDecl = ND; | |||
10475 | return false; | |||
10476 | } | |||
10477 | ||||
10478 | // Only 1 version of CPUSpecific is allowed for each CPU. | |||
10479 | for (const IdentifierInfo *CurII : CurCPUSpec->cpus()) { | |||
10480 | for (const IdentifierInfo *NewII : NewCPUSpec->cpus()) { | |||
10481 | if (CurII == NewII) { | |||
10482 | S.Diag(NewFD->getLocation(), diag::err_cpu_specific_multiple_defs) | |||
10483 | << NewII; | |||
10484 | S.Diag(CurFD->getLocation(), diag::note_previous_declaration); | |||
10485 | NewFD->setInvalidDecl(); | |||
10486 | return true; | |||
10487 | } | |||
10488 | } | |||
10489 | } | |||
10490 | } | |||
10491 | // If the two decls aren't the same MVType, there is no possible error | |||
10492 | // condition. | |||
10493 | } | |||
10494 | } | |||
10495 | ||||
10496 | // Else, this is simply a non-redecl case. Checking the 'value' is only | |||
10497 | // necessary in the Target case, since The CPUSpecific/Dispatch cases are | |||
10498 | // handled in the attribute adding step. | |||
10499 | if (NewMVType == MultiVersionKind::Target && | |||
10500 | CheckMultiVersionValue(S, NewFD)) { | |||
10501 | NewFD->setInvalidDecl(); | |||
10502 | return true; | |||
10503 | } | |||
10504 | ||||
10505 | if (CheckMultiVersionAdditionalRules(S, OldFD, NewFD, | |||
10506 | !OldFD->isMultiVersion(), NewMVType)) { | |||
10507 | NewFD->setInvalidDecl(); | |||
10508 | return true; | |||
10509 | } | |||
10510 | ||||
10511 | // Permit forward declarations in the case where these two are compatible. | |||
10512 | if (!OldFD->isMultiVersion()) { | |||
10513 | OldFD->setIsMultiVersion(); | |||
10514 | NewFD->setIsMultiVersion(); | |||
10515 | Redeclaration = true; | |||
10516 | OldDecl = OldFD; | |||
10517 | return false; | |||
10518 | } | |||
10519 | ||||
10520 | NewFD->setIsMultiVersion(); | |||
10521 | Redeclaration = false; | |||
10522 | MergeTypeWithPrevious = false; | |||
10523 | OldDecl = nullptr; | |||
10524 | Previous.clear(); | |||
10525 | return false; | |||
10526 | } | |||
10527 | ||||
10528 | ||||
10529 | /// Check the validity of a mulitversion function declaration. | |||
10530 | /// Also sets the multiversion'ness' of the function itself. | |||
10531 | /// | |||
10532 | /// This sets NewFD->isInvalidDecl() to true if there was an error. | |||
10533 | /// | |||
10534 | /// Returns true if there was an error, false otherwise. | |||
10535 | static bool CheckMultiVersionFunction(Sema &S, FunctionDecl *NewFD, | |||
10536 | bool &Redeclaration, NamedDecl *&OldDecl, | |||
10537 | bool &MergeTypeWithPrevious, | |||
10538 | LookupResult &Previous) { | |||
10539 | const auto *NewTA = NewFD->getAttr<TargetAttr>(); | |||
10540 | const auto *NewCPUDisp = NewFD->getAttr<CPUDispatchAttr>(); | |||
10541 | const auto *NewCPUSpec = NewFD->getAttr<CPUSpecificAttr>(); | |||
10542 | ||||
10543 | // Mixing Multiversioning types is prohibited. | |||
10544 | if ((NewTA && NewCPUDisp) || (NewTA && NewCPUSpec) || | |||
10545 | (NewCPUDisp && NewCPUSpec)) { | |||
10546 | S.Diag(NewFD->getLocation(), diag::err_multiversion_types_mixed); | |||
10547 | NewFD->setInvalidDecl(); | |||
10548 | return true; | |||
10549 | } | |||
10550 | ||||
10551 | MultiVersionKind MVType = NewFD->getMultiVersionKind(); | |||
10552 | ||||
10553 | // Main isn't allowed to become a multiversion function, however it IS | |||
10554 | // permitted to have 'main' be marked with the 'target' optimization hint. | |||
10555 | if (NewFD->isMain()) { | |||
10556 | if ((MVType == MultiVersionKind::Target && NewTA->isDefaultVersion()) || | |||
10557 | MVType == MultiVersionKind::CPUDispatch || | |||
10558 | MVType == MultiVersionKind::CPUSpecific) { | |||
10559 | S.Diag(NewFD->getLocation(), diag::err_multiversion_not_allowed_on_main); | |||
10560 | NewFD->setInvalidDecl(); | |||
10561 | return true; | |||
10562 | } | |||
10563 | return false; | |||
10564 | } | |||
10565 | ||||
10566 | if (!OldDecl || !OldDecl->getAsFunction() || | |||
10567 | OldDecl->getDeclContext()->getRedeclContext() != | |||
10568 | NewFD->getDeclContext()->getRedeclContext()) { | |||
10569 | // If there's no previous declaration, AND this isn't attempting to cause | |||
10570 | // multiversioning, this isn't an error condition. | |||
10571 | if (MVType == MultiVersionKind::None) | |||
10572 | return false; | |||
10573 | return CheckMultiVersionFirstFunction(S, NewFD, MVType, NewTA); | |||
10574 | } | |||
10575 | ||||
10576 | FunctionDecl *OldFD = OldDecl->getAsFunction(); | |||
10577 | ||||
10578 | if (!OldFD->isMultiVersion() && MVType == MultiVersionKind::None) | |||
10579 | return false; | |||
10580 | ||||
10581 | if (OldFD->isMultiVersion() && MVType == MultiVersionKind::None) { | |||
10582 | S.Diag(NewFD->getLocation(), diag::err_multiversion_required_in_redecl) | |||
10583 | << (OldFD->getMultiVersionKind() != MultiVersionKind::Target); | |||
10584 | NewFD->setInvalidDecl(); | |||
10585 | return true; | |||
10586 | } | |||
10587 | ||||
10588 | // Handle the target potentially causes multiversioning case. | |||
10589 | if (!OldFD->isMultiVersion() && MVType == MultiVersionKind::Target) | |||
10590 | return CheckTargetCausesMultiVersioning(S, OldFD, NewFD, NewTA, | |||
10591 | Redeclaration, OldDecl, | |||
10592 | MergeTypeWithPrevious, Previous); | |||
10593 | ||||
10594 | // At this point, we have a multiversion function decl (in OldFD) AND an | |||
10595 | // appropriate attribute in the current function decl. Resolve that these are | |||
10596 | // still compatible with previous declarations. | |||
10597 | return CheckMultiVersionAdditionalDecl( | |||
10598 | S, OldFD, NewFD, MVType, NewTA, NewCPUDisp, NewCPUSpec, Redeclaration, | |||
10599 | OldDecl, MergeTypeWithPrevious, Previous); | |||
10600 | } | |||
10601 | ||||
10602 | /// Perform semantic checking of a new function declaration. | |||
10603 | /// | |||
10604 | /// Performs semantic analysis of the new function declaration | |||
10605 | /// NewFD. This routine performs all semantic checking that does not | |||
10606 | /// require the actual declarator involved in the declaration, and is | |||
10607 | /// used both for the declaration of functions as they are parsed | |||
10608 | /// (called via ActOnDeclarator) and for the declaration of functions | |||
10609 | /// that have been instantiated via C++ template instantiation (called | |||
10610 | /// via InstantiateDecl). | |||
10611 | /// | |||
10612 | /// \param IsMemberSpecialization whether this new function declaration is | |||
10613 | /// a member specialization (that replaces any definition provided by the | |||
10614 | /// previous declaration). | |||
10615 | /// | |||
10616 | /// This sets NewFD->isInvalidDecl() to true if there was an error. | |||
10617 | /// | |||
10618 | /// \returns true if the function declaration is a redeclaration. | |||
10619 | bool Sema::CheckFunctionDeclaration(Scope *S, FunctionDecl *NewFD, | |||
10620 | LookupResult &Previous, | |||
10621 | bool IsMemberSpecialization) { | |||
10622 | assert(!NewFD->getReturnType()->isVariablyModifiedType() &&((!NewFD->getReturnType()->isVariablyModifiedType() && "Variably modified return types are not handled here") ? static_cast <void> (0) : __assert_fail ("!NewFD->getReturnType()->isVariablyModifiedType() && \"Variably modified return types are not handled here\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10623, __PRETTY_FUNCTION__)) | |||
10623 | "Variably modified return types are not handled here")((!NewFD->getReturnType()->isVariablyModifiedType() && "Variably modified return types are not handled here") ? static_cast <void> (0) : __assert_fail ("!NewFD->getReturnType()->isVariablyModifiedType() && \"Variably modified return types are not handled here\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10623, __PRETTY_FUNCTION__)); | |||
10624 | ||||
10625 | // Determine whether the type of this function should be merged with | |||
10626 | // a previous visible declaration. This never happens for functions in C++, | |||
10627 | // and always happens in C if the previous declaration was visible. | |||
10628 | bool MergeTypeWithPrevious = !getLangOpts().CPlusPlus && | |||
10629 | !Previous.isShadowed(); | |||
10630 | ||||
10631 | bool Redeclaration = false; | |||
10632 | NamedDecl *OldDecl = nullptr; | |||
10633 | bool MayNeedOverloadableChecks = false; | |||
10634 | ||||
10635 | // Merge or overload the declaration with an existing declaration of | |||
10636 | // the same name, if appropriate. | |||
10637 | if (!Previous.empty()) { | |||
10638 | // Determine whether NewFD is an overload of PrevDecl or | |||
10639 | // a declaration that requires merging. If it's an overload, | |||
10640 | // there's no more work to do here; we'll just add the new | |||
10641 | // function to the scope. | |||
10642 | if (!AllowOverloadingOfFunction(Previous, Context, NewFD)) { | |||
10643 | NamedDecl *Candidate = Previous.getRepresentativeDecl(); | |||
10644 | if (shouldLinkPossiblyHiddenDecl(Candidate, NewFD)) { | |||
10645 | Redeclaration = true; | |||
10646 | OldDecl = Candidate; | |||
10647 | } | |||
10648 | } else { | |||
10649 | MayNeedOverloadableChecks = true; | |||
10650 | switch (CheckOverload(S, NewFD, Previous, OldDecl, | |||
10651 | /*NewIsUsingDecl*/ false)) { | |||
10652 | case Ovl_Match: | |||
10653 | Redeclaration = true; | |||
10654 | break; | |||
10655 | ||||
10656 | case Ovl_NonFunction: | |||
10657 | Redeclaration = true; | |||
10658 | break; | |||
10659 | ||||
10660 | case Ovl_Overload: | |||
10661 | Redeclaration = false; | |||
10662 | break; | |||
10663 | } | |||
10664 | } | |||
10665 | } | |||
10666 | ||||
10667 | // Check for a previous extern "C" declaration with this name. | |||
10668 | if (!Redeclaration && | |||
10669 | checkForConflictWithNonVisibleExternC(*this, NewFD, Previous)) { | |||
10670 | if (!Previous.empty()) { | |||
10671 | // This is an extern "C" declaration with the same name as a previous | |||
10672 | // declaration, and thus redeclares that entity... | |||
10673 | Redeclaration = true; | |||
10674 | OldDecl = Previous.getFoundDecl(); | |||
10675 | MergeTypeWithPrevious = false; | |||
10676 | ||||
10677 | // ... except in the presence of __attribute__((overloadable)). | |||
10678 | if (OldDecl->hasAttr<OverloadableAttr>() || | |||
10679 | NewFD->hasAttr<OverloadableAttr>()) { | |||
10680 | if (IsOverload(NewFD, cast<FunctionDecl>(OldDecl), false)) { | |||
10681 | MayNeedOverloadableChecks = true; | |||
10682 | Redeclaration = false; | |||
10683 | OldDecl = nullptr; | |||
10684 | } | |||
10685 | } | |||
10686 | } | |||
10687 | } | |||
10688 | ||||
10689 | if (CheckMultiVersionFunction(*this, NewFD, Redeclaration, OldDecl, | |||
10690 | MergeTypeWithPrevious, Previous)) | |||
10691 | return Redeclaration; | |||
10692 | ||||
10693 | // PPC MMA non-pointer types are not allowed as function return types. | |||
10694 | if (Context.getTargetInfo().getTriple().isPPC64() && | |||
10695 | CheckPPCMMAType(NewFD->getReturnType(), NewFD->getLocation())) { | |||
10696 | NewFD->setInvalidDecl(); | |||
10697 | } | |||
10698 | ||||
10699 | // C++11 [dcl.constexpr]p8: | |||
10700 | // A constexpr specifier for a non-static member function that is not | |||
10701 | // a constructor declares that member function to be const. | |||
10702 | // | |||
10703 | // This needs to be delayed until we know whether this is an out-of-line | |||
10704 | // definition of a static member function. | |||
10705 | // | |||
10706 | // This rule is not present in C++1y, so we produce a backwards | |||
10707 | // compatibility warning whenever it happens in C++11. | |||
10708 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(NewFD); | |||
10709 | if (!getLangOpts().CPlusPlus14 && MD && MD->isConstexpr() && | |||
10710 | !MD->isStatic() && !isa<CXXConstructorDecl>(MD) && | |||
10711 | !isa<CXXDestructorDecl>(MD) && !MD->getMethodQualifiers().hasConst()) { | |||
10712 | CXXMethodDecl *OldMD = nullptr; | |||
10713 | if (OldDecl) | |||
10714 | OldMD = dyn_cast_or_null<CXXMethodDecl>(OldDecl->getAsFunction()); | |||
10715 | if (!OldMD || !OldMD->isStatic()) { | |||
10716 | const FunctionProtoType *FPT = | |||
10717 | MD->getType()->castAs<FunctionProtoType>(); | |||
10718 | FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo(); | |||
10719 | EPI.TypeQuals.addConst(); | |||
10720 | MD->setType(Context.getFunctionType(FPT->getReturnType(), | |||
10721 | FPT->getParamTypes(), EPI)); | |||
10722 | ||||
10723 | // Warn that we did this, if we're not performing template instantiation. | |||
10724 | // In that case, we'll have warned already when the template was defined. | |||
10725 | if (!inTemplateInstantiation()) { | |||
10726 | SourceLocation AddConstLoc; | |||
10727 | if (FunctionTypeLoc FTL = MD->getTypeSourceInfo()->getTypeLoc() | |||
10728 | .IgnoreParens().getAs<FunctionTypeLoc>()) | |||
10729 | AddConstLoc = getLocForEndOfToken(FTL.getRParenLoc()); | |||
10730 | ||||
10731 | Diag(MD->getLocation(), diag::warn_cxx14_compat_constexpr_not_const) | |||
10732 | << FixItHint::CreateInsertion(AddConstLoc, " const"); | |||
10733 | } | |||
10734 | } | |||
10735 | } | |||
10736 | ||||
10737 | if (Redeclaration) { | |||
10738 | // NewFD and OldDecl represent declarations that need to be | |||
10739 | // merged. | |||
10740 | if (MergeFunctionDecl(NewFD, OldDecl, S, MergeTypeWithPrevious)) { | |||
10741 | NewFD->setInvalidDecl(); | |||
10742 | return Redeclaration; | |||
10743 | } | |||
10744 | ||||
10745 | Previous.clear(); | |||
10746 | Previous.addDecl(OldDecl); | |||
10747 | ||||
10748 | if (FunctionTemplateDecl *OldTemplateDecl = | |||
10749 | dyn_cast<FunctionTemplateDecl>(OldDecl)) { | |||
10750 | auto *OldFD = OldTemplateDecl->getTemplatedDecl(); | |||
10751 | FunctionTemplateDecl *NewTemplateDecl | |||
10752 | = NewFD->getDescribedFunctionTemplate(); | |||
10753 | assert(NewTemplateDecl && "Template/non-template mismatch")((NewTemplateDecl && "Template/non-template mismatch" ) ? static_cast<void> (0) : __assert_fail ("NewTemplateDecl && \"Template/non-template mismatch\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10753, __PRETTY_FUNCTION__)); | |||
10754 | ||||
10755 | // The call to MergeFunctionDecl above may have created some state in | |||
10756 | // NewTemplateDecl that needs to be merged with OldTemplateDecl before we | |||
10757 | // can add it as a redeclaration. | |||
10758 | NewTemplateDecl->mergePrevDecl(OldTemplateDecl); | |||
10759 | ||||
10760 | NewFD->setPreviousDeclaration(OldFD); | |||
10761 | adjustDeclContextForDeclaratorDecl(NewFD, OldFD); | |||
10762 | if (NewFD->isCXXClassMember()) { | |||
10763 | NewFD->setAccess(OldTemplateDecl->getAccess()); | |||
10764 | NewTemplateDecl->setAccess(OldTemplateDecl->getAccess()); | |||
10765 | } | |||
10766 | ||||
10767 | // If this is an explicit specialization of a member that is a function | |||
10768 | // template, mark it as a member specialization. | |||
10769 | if (IsMemberSpecialization && | |||
10770 | NewTemplateDecl->getInstantiatedFromMemberTemplate()) { | |||
10771 | NewTemplateDecl->setMemberSpecialization(); | |||
10772 | assert(OldTemplateDecl->isMemberSpecialization())((OldTemplateDecl->isMemberSpecialization()) ? static_cast <void> (0) : __assert_fail ("OldTemplateDecl->isMemberSpecialization()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10772, __PRETTY_FUNCTION__)); | |||
10773 | // Explicit specializations of a member template do not inherit deleted | |||
10774 | // status from the parent member template that they are specializing. | |||
10775 | if (OldFD->isDeleted()) { | |||
10776 | // FIXME: This assert will not hold in the presence of modules. | |||
10777 | assert(OldFD->getCanonicalDecl() == OldFD)((OldFD->getCanonicalDecl() == OldFD) ? static_cast<void > (0) : __assert_fail ("OldFD->getCanonicalDecl() == OldFD" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10777, __PRETTY_FUNCTION__)); | |||
10778 | // FIXME: We need an update record for this AST mutation. | |||
10779 | OldFD->setDeletedAsWritten(false); | |||
10780 | } | |||
10781 | } | |||
10782 | ||||
10783 | } else { | |||
10784 | if (shouldLinkDependentDeclWithPrevious(NewFD, OldDecl)) { | |||
10785 | auto *OldFD = cast<FunctionDecl>(OldDecl); | |||
10786 | // This needs to happen first so that 'inline' propagates. | |||
10787 | NewFD->setPreviousDeclaration(OldFD); | |||
10788 | adjustDeclContextForDeclaratorDecl(NewFD, OldFD); | |||
10789 | if (NewFD->isCXXClassMember()) | |||
10790 | NewFD->setAccess(OldFD->getAccess()); | |||
10791 | } | |||
10792 | } | |||
10793 | } else if (!getLangOpts().CPlusPlus && MayNeedOverloadableChecks && | |||
10794 | !NewFD->getAttr<OverloadableAttr>()) { | |||
10795 | assert((Previous.empty() ||(((Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && "Non-redecls shouldn't happen without overloadable present") ? static_cast<void> (0) : __assert_fail ("(Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && \"Non-redecls shouldn't happen without overloadable present\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10800, __PRETTY_FUNCTION__)) | |||
10796 | llvm::any_of(Previous,(((Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && "Non-redecls shouldn't happen without overloadable present") ? static_cast<void> (0) : __assert_fail ("(Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && \"Non-redecls shouldn't happen without overloadable present\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10800, __PRETTY_FUNCTION__)) | |||
10797 | [](const NamedDecl *ND) {(((Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && "Non-redecls shouldn't happen without overloadable present") ? static_cast<void> (0) : __assert_fail ("(Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && \"Non-redecls shouldn't happen without overloadable present\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10800, __PRETTY_FUNCTION__)) | |||
10798 | return ND->hasAttr<OverloadableAttr>();(((Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && "Non-redecls shouldn't happen without overloadable present") ? static_cast<void> (0) : __assert_fail ("(Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && \"Non-redecls shouldn't happen without overloadable present\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10800, __PRETTY_FUNCTION__)) | |||
10799 | })) &&(((Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && "Non-redecls shouldn't happen without overloadable present") ? static_cast<void> (0) : __assert_fail ("(Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && \"Non-redecls shouldn't happen without overloadable present\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10800, __PRETTY_FUNCTION__)) | |||
10800 | "Non-redecls shouldn't happen without overloadable present")(((Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && "Non-redecls shouldn't happen without overloadable present") ? static_cast<void> (0) : __assert_fail ("(Previous.empty() || llvm::any_of(Previous, [](const NamedDecl *ND) { return ND->hasAttr<OverloadableAttr>(); })) && \"Non-redecls shouldn't happen without overloadable present\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 10800, __PRETTY_FUNCTION__)); | |||
10801 | ||||
10802 | auto OtherUnmarkedIter = llvm::find_if(Previous, [](const NamedDecl *ND) { | |||
10803 | const auto *FD = dyn_cast<FunctionDecl>(ND); | |||
10804 | return FD && !FD->hasAttr<OverloadableAttr>(); | |||
10805 | }); | |||
10806 | ||||
10807 | if (OtherUnmarkedIter != Previous.end()) { | |||
10808 | Diag(NewFD->getLocation(), | |||
10809 | diag::err_attribute_overloadable_multiple_unmarked_overloads); | |||
10810 | Diag((*OtherUnmarkedIter)->getLocation(), | |||
10811 | diag::note_attribute_overloadable_prev_overload) | |||
10812 | << false; | |||
10813 | ||||
10814 | NewFD->addAttr(OverloadableAttr::CreateImplicit(Context)); | |||
10815 | } | |||
10816 | } | |||
10817 | ||||
10818 | // Semantic checking for this function declaration (in isolation). | |||
10819 | ||||
10820 | if (getLangOpts().CPlusPlus) { | |||
10821 | // C++-specific checks. | |||
10822 | if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(NewFD)) { | |||
10823 | CheckConstructor(Constructor); | |||
10824 | } else if (CXXDestructorDecl *Destructor = | |||
10825 | dyn_cast<CXXDestructorDecl>(NewFD)) { | |||
10826 | CXXRecordDecl *Record = Destructor->getParent(); | |||
10827 | QualType ClassType = Context.getTypeDeclType(Record); | |||
10828 | ||||
10829 | // FIXME: Shouldn't we be able to perform this check even when the class | |||
10830 | // type is dependent? Both gcc and edg can handle that. | |||
10831 | if (!ClassType->isDependentType()) { | |||
10832 | DeclarationName Name | |||
10833 | = Context.DeclarationNames.getCXXDestructorName( | |||
10834 | Context.getCanonicalType(ClassType)); | |||
10835 | if (NewFD->getDeclName() != Name) { | |||
10836 | Diag(NewFD->getLocation(), diag::err_destructor_name); | |||
10837 | NewFD->setInvalidDecl(); | |||
10838 | return Redeclaration; | |||
10839 | } | |||
10840 | } | |||
10841 | } else if (auto *Guide = dyn_cast<CXXDeductionGuideDecl>(NewFD)) { | |||
10842 | if (auto *TD = Guide->getDescribedFunctionTemplate()) | |||
10843 | CheckDeductionGuideTemplate(TD); | |||
10844 | ||||
10845 | // A deduction guide is not on the list of entities that can be | |||
10846 | // explicitly specialized. | |||
10847 | if (Guide->getTemplateSpecializationKind() == TSK_ExplicitSpecialization) | |||
10848 | Diag(Guide->getBeginLoc(), diag::err_deduction_guide_specialized) | |||
10849 | << /*explicit specialization*/ 1; | |||
10850 | } | |||
10851 | ||||
10852 | // Find any virtual functions that this function overrides. | |||
10853 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(NewFD)) { | |||
10854 | if (!Method->isFunctionTemplateSpecialization() && | |||
10855 | !Method->getDescribedFunctionTemplate() && | |||
10856 | Method->isCanonicalDecl()) { | |||
10857 | AddOverriddenMethods(Method->getParent(), Method); | |||
10858 | } | |||
10859 | if (Method->isVirtual() && NewFD->getTrailingRequiresClause()) | |||
10860 | // C++2a [class.virtual]p6 | |||
10861 | // A virtual method shall not have a requires-clause. | |||
10862 | Diag(NewFD->getTrailingRequiresClause()->getBeginLoc(), | |||
10863 | diag::err_constrained_virtual_method); | |||
10864 | ||||
10865 | if (Method->isStatic()) | |||
10866 | checkThisInStaticMemberFunctionType(Method); | |||
10867 | } | |||
10868 | ||||
10869 | if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(NewFD)) | |||
10870 | ActOnConversionDeclarator(Conversion); | |||
10871 | ||||
10872 | // Extra checking for C++ overloaded operators (C++ [over.oper]). | |||
10873 | if (NewFD->isOverloadedOperator() && | |||
10874 | CheckOverloadedOperatorDeclaration(NewFD)) { | |||
10875 | NewFD->setInvalidDecl(); | |||
10876 | return Redeclaration; | |||
10877 | } | |||
10878 | ||||
10879 | // Extra checking for C++0x literal operators (C++0x [over.literal]). | |||
10880 | if (NewFD->getLiteralIdentifier() && | |||
10881 | CheckLiteralOperatorDeclaration(NewFD)) { | |||
10882 | NewFD->setInvalidDecl(); | |||
10883 | return Redeclaration; | |||
10884 | } | |||
10885 | ||||
10886 | // In C++, check default arguments now that we have merged decls. Unless | |||
10887 | // the lexical context is the class, because in this case this is done | |||
10888 | // during delayed parsing anyway. | |||
10889 | if (!CurContext->isRecord()) | |||
10890 | CheckCXXDefaultArguments(NewFD); | |||
10891 | ||||
10892 | // If this function declares a builtin function, check the type of this | |||
10893 | // declaration against the expected type for the builtin. | |||
10894 | if (unsigned BuiltinID = NewFD->getBuiltinID()) { | |||
10895 | ASTContext::GetBuiltinTypeError Error; | |||
10896 | LookupNecessaryTypesForBuiltin(S, BuiltinID); | |||
10897 | QualType T = Context.GetBuiltinType(BuiltinID, Error); | |||
10898 | // If the type of the builtin differs only in its exception | |||
10899 | // specification, that's OK. | |||
10900 | // FIXME: If the types do differ in this way, it would be better to | |||
10901 | // retain the 'noexcept' form of the type. | |||
10902 | if (!T.isNull() && | |||
10903 | !Context.hasSameFunctionTypeIgnoringExceptionSpec(T, | |||
10904 | NewFD->getType())) | |||
10905 | // The type of this function differs from the type of the builtin, | |||
10906 | // so forget about the builtin entirely. | |||
10907 | Context.BuiltinInfo.forgetBuiltin(BuiltinID, Context.Idents); | |||
10908 | } | |||
10909 | ||||
10910 | // If this function is declared as being extern "C", then check to see if | |||
10911 | // the function returns a UDT (class, struct, or union type) that is not C | |||
10912 | // compatible, and if it does, warn the user. | |||
10913 | // But, issue any diagnostic on the first declaration only. | |||
10914 | if (Previous.empty() && NewFD->isExternC()) { | |||
10915 | QualType R = NewFD->getReturnType(); | |||
10916 | if (R->isIncompleteType() && !R->isVoidType()) | |||
10917 | Diag(NewFD->getLocation(), diag::warn_return_value_udt_incomplete) | |||
10918 | << NewFD << R; | |||
10919 | else if (!R.isPODType(Context) && !R->isVoidType() && | |||
10920 | !R->isObjCObjectPointerType()) | |||
10921 | Diag(NewFD->getLocation(), diag::warn_return_value_udt) << NewFD << R; | |||
10922 | } | |||
10923 | ||||
10924 | // C++1z [dcl.fct]p6: | |||
10925 | // [...] whether the function has a non-throwing exception-specification | |||
10926 | // [is] part of the function type | |||
10927 | // | |||
10928 | // This results in an ABI break between C++14 and C++17 for functions whose | |||
10929 | // declared type includes an exception-specification in a parameter or | |||
10930 | // return type. (Exception specifications on the function itself are OK in | |||
10931 | // most cases, and exception specifications are not permitted in most other | |||
10932 | // contexts where they could make it into a mangling.) | |||
10933 | if (!getLangOpts().CPlusPlus17 && !NewFD->getPrimaryTemplate()) { | |||
10934 | auto HasNoexcept = [&](QualType T) -> bool { | |||
10935 | // Strip off declarator chunks that could be between us and a function | |||
10936 | // type. We don't need to look far, exception specifications are very | |||
10937 | // restricted prior to C++17. | |||
10938 | if (auto *RT = T->getAs<ReferenceType>()) | |||
10939 | T = RT->getPointeeType(); | |||
10940 | else if (T->isAnyPointerType()) | |||
10941 | T = T->getPointeeType(); | |||
10942 | else if (auto *MPT = T->getAs<MemberPointerType>()) | |||
10943 | T = MPT->getPointeeType(); | |||
10944 | if (auto *FPT = T->getAs<FunctionProtoType>()) | |||
10945 | if (FPT->isNothrow()) | |||
10946 | return true; | |||
10947 | return false; | |||
10948 | }; | |||
10949 | ||||
10950 | auto *FPT = NewFD->getType()->castAs<FunctionProtoType>(); | |||
10951 | bool AnyNoexcept = HasNoexcept(FPT->getReturnType()); | |||
10952 | for (QualType T : FPT->param_types()) | |||
10953 | AnyNoexcept |= HasNoexcept(T); | |||
10954 | if (AnyNoexcept) | |||
10955 | Diag(NewFD->getLocation(), | |||
10956 | diag::warn_cxx17_compat_exception_spec_in_signature) | |||
10957 | << NewFD; | |||
10958 | } | |||
10959 | ||||
10960 | if (!Redeclaration && LangOpts.CUDA) | |||
10961 | checkCUDATargetOverload(NewFD, Previous); | |||
10962 | } | |||
10963 | return Redeclaration; | |||
10964 | } | |||
10965 | ||||
10966 | void Sema::CheckMain(FunctionDecl* FD, const DeclSpec& DS) { | |||
10967 | // C++11 [basic.start.main]p3: | |||
10968 | // A program that [...] declares main to be inline, static or | |||
10969 | // constexpr is ill-formed. | |||
10970 | // C11 6.7.4p4: In a hosted environment, no function specifier(s) shall | |||
10971 | // appear in a declaration of main. | |||
10972 | // static main is not an error under C99, but we should warn about it. | |||
10973 | // We accept _Noreturn main as an extension. | |||
10974 | if (FD->getStorageClass() == SC_Static) | |||
10975 | Diag(DS.getStorageClassSpecLoc(), getLangOpts().CPlusPlus | |||
10976 | ? diag::err_static_main : diag::warn_static_main) | |||
10977 | << FixItHint::CreateRemoval(DS.getStorageClassSpecLoc()); | |||
10978 | if (FD->isInlineSpecified()) | |||
10979 | Diag(DS.getInlineSpecLoc(), diag::err_inline_main) | |||
10980 | << FixItHint::CreateRemoval(DS.getInlineSpecLoc()); | |||
10981 | if (DS.isNoreturnSpecified()) { | |||
10982 | SourceLocation NoreturnLoc = DS.getNoreturnSpecLoc(); | |||
10983 | SourceRange NoreturnRange(NoreturnLoc, getLocForEndOfToken(NoreturnLoc)); | |||
10984 | Diag(NoreturnLoc, diag::ext_noreturn_main); | |||
10985 | Diag(NoreturnLoc, diag::note_main_remove_noreturn) | |||
10986 | << FixItHint::CreateRemoval(NoreturnRange); | |||
10987 | } | |||
10988 | if (FD->isConstexpr()) { | |||
10989 | Diag(DS.getConstexprSpecLoc(), diag::err_constexpr_main) | |||
10990 | << FD->isConsteval() | |||
10991 | << FixItHint::CreateRemoval(DS.getConstexprSpecLoc()); | |||
10992 | FD->setConstexprKind(ConstexprSpecKind::Unspecified); | |||
10993 | } | |||
10994 | ||||
10995 | if (getLangOpts().OpenCL) { | |||
10996 | Diag(FD->getLocation(), diag::err_opencl_no_main) | |||
10997 | << FD->hasAttr<OpenCLKernelAttr>(); | |||
10998 | FD->setInvalidDecl(); | |||
10999 | return; | |||
11000 | } | |||
11001 | ||||
11002 | QualType T = FD->getType(); | |||
11003 | assert(T->isFunctionType() && "function decl is not of function type")((T->isFunctionType() && "function decl is not of function type" ) ? static_cast<void> (0) : __assert_fail ("T->isFunctionType() && \"function decl is not of function type\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11003, __PRETTY_FUNCTION__)); | |||
11004 | const FunctionType* FT = T->castAs<FunctionType>(); | |||
11005 | ||||
11006 | // Set default calling convention for main() | |||
11007 | if (FT->getCallConv() != CC_C) { | |||
11008 | FT = Context.adjustFunctionType(FT, FT->getExtInfo().withCallingConv(CC_C)); | |||
11009 | FD->setType(QualType(FT, 0)); | |||
11010 | T = Context.getCanonicalType(FD->getType()); | |||
11011 | } | |||
11012 | ||||
11013 | if (getLangOpts().GNUMode && !getLangOpts().CPlusPlus) { | |||
11014 | // In C with GNU extensions we allow main() to have non-integer return | |||
11015 | // type, but we should warn about the extension, and we disable the | |||
11016 | // implicit-return-zero rule. | |||
11017 | ||||
11018 | // GCC in C mode accepts qualified 'int'. | |||
11019 | if (Context.hasSameUnqualifiedType(FT->getReturnType(), Context.IntTy)) | |||
11020 | FD->setHasImplicitReturnZero(true); | |||
11021 | else { | |||
11022 | Diag(FD->getTypeSpecStartLoc(), diag::ext_main_returns_nonint); | |||
11023 | SourceRange RTRange = FD->getReturnTypeSourceRange(); | |||
11024 | if (RTRange.isValid()) | |||
11025 | Diag(RTRange.getBegin(), diag::note_main_change_return_type) | |||
11026 | << FixItHint::CreateReplacement(RTRange, "int"); | |||
11027 | } | |||
11028 | } else { | |||
11029 | // In C and C++, main magically returns 0 if you fall off the end; | |||
11030 | // set the flag which tells us that. | |||
11031 | // This is C++ [basic.start.main]p5 and C99 5.1.2.2.3. | |||
11032 | ||||
11033 | // All the standards say that main() should return 'int'. | |||
11034 | if (Context.hasSameType(FT->getReturnType(), Context.IntTy)) | |||
11035 | FD->setHasImplicitReturnZero(true); | |||
11036 | else { | |||
11037 | // Otherwise, this is just a flat-out error. | |||
11038 | SourceRange RTRange = FD->getReturnTypeSourceRange(); | |||
11039 | Diag(FD->getTypeSpecStartLoc(), diag::err_main_returns_nonint) | |||
11040 | << (RTRange.isValid() ? FixItHint::CreateReplacement(RTRange, "int") | |||
11041 | : FixItHint()); | |||
11042 | FD->setInvalidDecl(true); | |||
11043 | } | |||
11044 | } | |||
11045 | ||||
11046 | // Treat protoless main() as nullary. | |||
11047 | if (isa<FunctionNoProtoType>(FT)) return; | |||
11048 | ||||
11049 | const FunctionProtoType* FTP = cast<const FunctionProtoType>(FT); | |||
11050 | unsigned nparams = FTP->getNumParams(); | |||
11051 | assert(FD->getNumParams() == nparams)((FD->getNumParams() == nparams) ? static_cast<void> (0) : __assert_fail ("FD->getNumParams() == nparams", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11051, __PRETTY_FUNCTION__)); | |||
11052 | ||||
11053 | bool HasExtraParameters = (nparams > 3); | |||
11054 | ||||
11055 | if (FTP->isVariadic()) { | |||
11056 | Diag(FD->getLocation(), diag::ext_variadic_main); | |||
11057 | // FIXME: if we had information about the location of the ellipsis, we | |||
11058 | // could add a FixIt hint to remove it as a parameter. | |||
11059 | } | |||
11060 | ||||
11061 | // Darwin passes an undocumented fourth argument of type char**. If | |||
11062 | // other platforms start sprouting these, the logic below will start | |||
11063 | // getting shifty. | |||
11064 | if (nparams == 4 && Context.getTargetInfo().getTriple().isOSDarwin()) | |||
11065 | HasExtraParameters = false; | |||
11066 | ||||
11067 | if (HasExtraParameters) { | |||
11068 | Diag(FD->getLocation(), diag::err_main_surplus_args) << nparams; | |||
11069 | FD->setInvalidDecl(true); | |||
11070 | nparams = 3; | |||
11071 | } | |||
11072 | ||||
11073 | // FIXME: a lot of the following diagnostics would be improved | |||
11074 | // if we had some location information about types. | |||
11075 | ||||
11076 | QualType CharPP = | |||
11077 | Context.getPointerType(Context.getPointerType(Context.CharTy)); | |||
11078 | QualType Expected[] = { Context.IntTy, CharPP, CharPP, CharPP }; | |||
11079 | ||||
11080 | for (unsigned i = 0; i < nparams; ++i) { | |||
11081 | QualType AT = FTP->getParamType(i); | |||
11082 | ||||
11083 | bool mismatch = true; | |||
11084 | ||||
11085 | if (Context.hasSameUnqualifiedType(AT, Expected[i])) | |||
11086 | mismatch = false; | |||
11087 | else if (Expected[i] == CharPP) { | |||
11088 | // As an extension, the following forms are okay: | |||
11089 | // char const ** | |||
11090 | // char const * const * | |||
11091 | // char * const * | |||
11092 | ||||
11093 | QualifierCollector qs; | |||
11094 | const PointerType* PT; | |||
11095 | if ((PT = qs.strip(AT)->getAs<PointerType>()) && | |||
11096 | (PT = qs.strip(PT->getPointeeType())->getAs<PointerType>()) && | |||
11097 | Context.hasSameType(QualType(qs.strip(PT->getPointeeType()), 0), | |||
11098 | Context.CharTy)) { | |||
11099 | qs.removeConst(); | |||
11100 | mismatch = !qs.empty(); | |||
11101 | } | |||
11102 | } | |||
11103 | ||||
11104 | if (mismatch) { | |||
11105 | Diag(FD->getLocation(), diag::err_main_arg_wrong) << i << Expected[i]; | |||
11106 | // TODO: suggest replacing given type with expected type | |||
11107 | FD->setInvalidDecl(true); | |||
11108 | } | |||
11109 | } | |||
11110 | ||||
11111 | if (nparams == 1 && !FD->isInvalidDecl()) { | |||
11112 | Diag(FD->getLocation(), diag::warn_main_one_arg); | |||
11113 | } | |||
11114 | ||||
11115 | if (!FD->isInvalidDecl() && FD->getDescribedFunctionTemplate()) { | |||
11116 | Diag(FD->getLocation(), diag::err_mainlike_template_decl) << FD; | |||
11117 | FD->setInvalidDecl(); | |||
11118 | } | |||
11119 | } | |||
11120 | ||||
11121 | void Sema::CheckMSVCRTEntryPoint(FunctionDecl *FD) { | |||
11122 | QualType T = FD->getType(); | |||
11123 | assert(T->isFunctionType() && "function decl is not of function type")((T->isFunctionType() && "function decl is not of function type" ) ? static_cast<void> (0) : __assert_fail ("T->isFunctionType() && \"function decl is not of function type\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11123, __PRETTY_FUNCTION__)); | |||
11124 | const FunctionType *FT = T->castAs<FunctionType>(); | |||
11125 | ||||
11126 | // Set an implicit return of 'zero' if the function can return some integral, | |||
11127 | // enumeration, pointer or nullptr type. | |||
11128 | if (FT->getReturnType()->isIntegralOrEnumerationType() || | |||
11129 | FT->getReturnType()->isAnyPointerType() || | |||
11130 | FT->getReturnType()->isNullPtrType()) | |||
11131 | // DllMain is exempt because a return value of zero means it failed. | |||
11132 | if (FD->getName() != "DllMain") | |||
11133 | FD->setHasImplicitReturnZero(true); | |||
11134 | ||||
11135 | if (!FD->isInvalidDecl() && FD->getDescribedFunctionTemplate()) { | |||
11136 | Diag(FD->getLocation(), diag::err_mainlike_template_decl) << FD; | |||
11137 | FD->setInvalidDecl(); | |||
11138 | } | |||
11139 | } | |||
11140 | ||||
11141 | bool Sema::CheckForConstantInitializer(Expr *Init, QualType DclT) { | |||
11142 | // FIXME: Need strict checking. In C89, we need to check for | |||
11143 | // any assignment, increment, decrement, function-calls, or | |||
11144 | // commas outside of a sizeof. In C99, it's the same list, | |||
11145 | // except that the aforementioned are allowed in unevaluated | |||
11146 | // expressions. Everything else falls under the | |||
11147 | // "may accept other forms of constant expressions" exception. | |||
11148 | // | |||
11149 | // Regular C++ code will not end up here (exceptions: language extensions, | |||
11150 | // OpenCL C++ etc), so the constant expression rules there don't matter. | |||
11151 | if (Init->isValueDependent()) { | |||
11152 | assert(Init->containsErrors() &&((Init->containsErrors() && "Dependent code should only occur in error-recovery path." ) ? static_cast<void> (0) : __assert_fail ("Init->containsErrors() && \"Dependent code should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11153, __PRETTY_FUNCTION__)) | |||
11153 | "Dependent code should only occur in error-recovery path.")((Init->containsErrors() && "Dependent code should only occur in error-recovery path." ) ? static_cast<void> (0) : __assert_fail ("Init->containsErrors() && \"Dependent code should only occur in error-recovery path.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11153, __PRETTY_FUNCTION__)); | |||
11154 | return true; | |||
11155 | } | |||
11156 | const Expr *Culprit; | |||
11157 | if (Init->isConstantInitializer(Context, false, &Culprit)) | |||
11158 | return false; | |||
11159 | Diag(Culprit->getExprLoc(), diag::err_init_element_not_constant) | |||
11160 | << Culprit->getSourceRange(); | |||
11161 | return true; | |||
11162 | } | |||
11163 | ||||
11164 | namespace { | |||
11165 | // Visits an initialization expression to see if OrigDecl is evaluated in | |||
11166 | // its own initialization and throws a warning if it does. | |||
11167 | class SelfReferenceChecker | |||
11168 | : public EvaluatedExprVisitor<SelfReferenceChecker> { | |||
11169 | Sema &S; | |||
11170 | Decl *OrigDecl; | |||
11171 | bool isRecordType; | |||
11172 | bool isPODType; | |||
11173 | bool isReferenceType; | |||
11174 | ||||
11175 | bool isInitList; | |||
11176 | llvm::SmallVector<unsigned, 4> InitFieldIndex; | |||
11177 | ||||
11178 | public: | |||
11179 | typedef EvaluatedExprVisitor<SelfReferenceChecker> Inherited; | |||
11180 | ||||
11181 | SelfReferenceChecker(Sema &S, Decl *OrigDecl) : Inherited(S.Context), | |||
11182 | S(S), OrigDecl(OrigDecl) { | |||
11183 | isPODType = false; | |||
11184 | isRecordType = false; | |||
11185 | isReferenceType = false; | |||
11186 | isInitList = false; | |||
11187 | if (ValueDecl *VD = dyn_cast<ValueDecl>(OrigDecl)) { | |||
11188 | isPODType = VD->getType().isPODType(S.Context); | |||
11189 | isRecordType = VD->getType()->isRecordType(); | |||
11190 | isReferenceType = VD->getType()->isReferenceType(); | |||
11191 | } | |||
11192 | } | |||
11193 | ||||
11194 | // For most expressions, just call the visitor. For initializer lists, | |||
11195 | // track the index of the field being initialized since fields are | |||
11196 | // initialized in order allowing use of previously initialized fields. | |||
11197 | void CheckExpr(Expr *E) { | |||
11198 | InitListExpr *InitList = dyn_cast<InitListExpr>(E); | |||
11199 | if (!InitList) { | |||
11200 | Visit(E); | |||
11201 | return; | |||
11202 | } | |||
11203 | ||||
11204 | // Track and increment the index here. | |||
11205 | isInitList = true; | |||
11206 | InitFieldIndex.push_back(0); | |||
11207 | for (auto Child : InitList->children()) { | |||
11208 | CheckExpr(cast<Expr>(Child)); | |||
11209 | ++InitFieldIndex.back(); | |||
11210 | } | |||
11211 | InitFieldIndex.pop_back(); | |||
11212 | } | |||
11213 | ||||
11214 | // Returns true if MemberExpr is checked and no further checking is needed. | |||
11215 | // Returns false if additional checking is required. | |||
11216 | bool CheckInitListMemberExpr(MemberExpr *E, bool CheckReference) { | |||
11217 | llvm::SmallVector<FieldDecl*, 4> Fields; | |||
11218 | Expr *Base = E; | |||
11219 | bool ReferenceField = false; | |||
11220 | ||||
11221 | // Get the field members used. | |||
11222 | while (MemberExpr *ME = dyn_cast<MemberExpr>(Base)) { | |||
11223 | FieldDecl *FD = dyn_cast<FieldDecl>(ME->getMemberDecl()); | |||
11224 | if (!FD) | |||
11225 | return false; | |||
11226 | Fields.push_back(FD); | |||
11227 | if (FD->getType()->isReferenceType()) | |||
11228 | ReferenceField = true; | |||
11229 | Base = ME->getBase()->IgnoreParenImpCasts(); | |||
11230 | } | |||
11231 | ||||
11232 | // Keep checking only if the base Decl is the same. | |||
11233 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Base); | |||
11234 | if (!DRE || DRE->getDecl() != OrigDecl) | |||
11235 | return false; | |||
11236 | ||||
11237 | // A reference field can be bound to an unininitialized field. | |||
11238 | if (CheckReference && !ReferenceField) | |||
11239 | return true; | |||
11240 | ||||
11241 | // Convert FieldDecls to their index number. | |||
11242 | llvm::SmallVector<unsigned, 4> UsedFieldIndex; | |||
11243 | for (const FieldDecl *I : llvm::reverse(Fields)) | |||
11244 | UsedFieldIndex.push_back(I->getFieldIndex()); | |||
11245 | ||||
11246 | // See if a warning is needed by checking the first difference in index | |||
11247 | // numbers. If field being used has index less than the field being | |||
11248 | // initialized, then the use is safe. | |||
11249 | for (auto UsedIter = UsedFieldIndex.begin(), | |||
11250 | UsedEnd = UsedFieldIndex.end(), | |||
11251 | OrigIter = InitFieldIndex.begin(), | |||
11252 | OrigEnd = InitFieldIndex.end(); | |||
11253 | UsedIter != UsedEnd && OrigIter != OrigEnd; ++UsedIter, ++OrigIter) { | |||
11254 | if (*UsedIter < *OrigIter) | |||
11255 | return true; | |||
11256 | if (*UsedIter > *OrigIter) | |||
11257 | break; | |||
11258 | } | |||
11259 | ||||
11260 | // TODO: Add a different warning which will print the field names. | |||
11261 | HandleDeclRefExpr(DRE); | |||
11262 | return true; | |||
11263 | } | |||
11264 | ||||
11265 | // For most expressions, the cast is directly above the DeclRefExpr. | |||
11266 | // For conditional operators, the cast can be outside the conditional | |||
11267 | // operator if both expressions are DeclRefExpr's. | |||
11268 | void HandleValue(Expr *E) { | |||
11269 | E = E->IgnoreParens(); | |||
11270 | if (DeclRefExpr* DRE = dyn_cast<DeclRefExpr>(E)) { | |||
11271 | HandleDeclRefExpr(DRE); | |||
11272 | return; | |||
11273 | } | |||
11274 | ||||
11275 | if (ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) { | |||
11276 | Visit(CO->getCond()); | |||
11277 | HandleValue(CO->getTrueExpr()); | |||
11278 | HandleValue(CO->getFalseExpr()); | |||
11279 | return; | |||
11280 | } | |||
11281 | ||||
11282 | if (BinaryConditionalOperator *BCO = | |||
11283 | dyn_cast<BinaryConditionalOperator>(E)) { | |||
11284 | Visit(BCO->getCond()); | |||
11285 | HandleValue(BCO->getFalseExpr()); | |||
11286 | return; | |||
11287 | } | |||
11288 | ||||
11289 | if (OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(E)) { | |||
11290 | HandleValue(OVE->getSourceExpr()); | |||
11291 | return; | |||
11292 | } | |||
11293 | ||||
11294 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | |||
11295 | if (BO->getOpcode() == BO_Comma) { | |||
11296 | Visit(BO->getLHS()); | |||
11297 | HandleValue(BO->getRHS()); | |||
11298 | return; | |||
11299 | } | |||
11300 | } | |||
11301 | ||||
11302 | if (isa<MemberExpr>(E)) { | |||
11303 | if (isInitList) { | |||
11304 | if (CheckInitListMemberExpr(cast<MemberExpr>(E), | |||
11305 | false /*CheckReference*/)) | |||
11306 | return; | |||
11307 | } | |||
11308 | ||||
11309 | Expr *Base = E->IgnoreParenImpCasts(); | |||
11310 | while (MemberExpr *ME = dyn_cast<MemberExpr>(Base)) { | |||
11311 | // Check for static member variables and don't warn on them. | |||
11312 | if (!isa<FieldDecl>(ME->getMemberDecl())) | |||
11313 | return; | |||
11314 | Base = ME->getBase()->IgnoreParenImpCasts(); | |||
11315 | } | |||
11316 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Base)) | |||
11317 | HandleDeclRefExpr(DRE); | |||
11318 | return; | |||
11319 | } | |||
11320 | ||||
11321 | Visit(E); | |||
11322 | } | |||
11323 | ||||
11324 | // Reference types not handled in HandleValue are handled here since all | |||
11325 | // uses of references are bad, not just r-value uses. | |||
11326 | void VisitDeclRefExpr(DeclRefExpr *E) { | |||
11327 | if (isReferenceType) | |||
11328 | HandleDeclRefExpr(E); | |||
11329 | } | |||
11330 | ||||
11331 | void VisitImplicitCastExpr(ImplicitCastExpr *E) { | |||
11332 | if (E->getCastKind() == CK_LValueToRValue) { | |||
11333 | HandleValue(E->getSubExpr()); | |||
11334 | return; | |||
11335 | } | |||
11336 | ||||
11337 | Inherited::VisitImplicitCastExpr(E); | |||
11338 | } | |||
11339 | ||||
11340 | void VisitMemberExpr(MemberExpr *E) { | |||
11341 | if (isInitList) { | |||
11342 | if (CheckInitListMemberExpr(E, true /*CheckReference*/)) | |||
11343 | return; | |||
11344 | } | |||
11345 | ||||
11346 | // Don't warn on arrays since they can be treated as pointers. | |||
11347 | if (E->getType()->canDecayToPointerType()) return; | |||
11348 | ||||
11349 | // Warn when a non-static method call is followed by non-static member | |||
11350 | // field accesses, which is followed by a DeclRefExpr. | |||
11351 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(E->getMemberDecl()); | |||
11352 | bool Warn = (MD && !MD->isStatic()); | |||
11353 | Expr *Base = E->getBase()->IgnoreParenImpCasts(); | |||
11354 | while (MemberExpr *ME = dyn_cast<MemberExpr>(Base)) { | |||
11355 | if (!isa<FieldDecl>(ME->getMemberDecl())) | |||
11356 | Warn = false; | |||
11357 | Base = ME->getBase()->IgnoreParenImpCasts(); | |||
11358 | } | |||
11359 | ||||
11360 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Base)) { | |||
11361 | if (Warn) | |||
11362 | HandleDeclRefExpr(DRE); | |||
11363 | return; | |||
11364 | } | |||
11365 | ||||
11366 | // The base of a MemberExpr is not a MemberExpr or a DeclRefExpr. | |||
11367 | // Visit that expression. | |||
11368 | Visit(Base); | |||
11369 | } | |||
11370 | ||||
11371 | void VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) { | |||
11372 | Expr *Callee = E->getCallee(); | |||
11373 | ||||
11374 | if (isa<UnresolvedLookupExpr>(Callee)) | |||
11375 | return Inherited::VisitCXXOperatorCallExpr(E); | |||
11376 | ||||
11377 | Visit(Callee); | |||
11378 | for (auto Arg: E->arguments()) | |||
11379 | HandleValue(Arg->IgnoreParenImpCasts()); | |||
11380 | } | |||
11381 | ||||
11382 | void VisitUnaryOperator(UnaryOperator *E) { | |||
11383 | // For POD record types, addresses of its own members are well-defined. | |||
11384 | if (E->getOpcode() == UO_AddrOf && isRecordType && | |||
11385 | isa<MemberExpr>(E->getSubExpr()->IgnoreParens())) { | |||
11386 | if (!isPODType) | |||
11387 | HandleValue(E->getSubExpr()); | |||
11388 | return; | |||
11389 | } | |||
11390 | ||||
11391 | if (E->isIncrementDecrementOp()) { | |||
11392 | HandleValue(E->getSubExpr()); | |||
11393 | return; | |||
11394 | } | |||
11395 | ||||
11396 | Inherited::VisitUnaryOperator(E); | |||
11397 | } | |||
11398 | ||||
11399 | void VisitObjCMessageExpr(ObjCMessageExpr *E) {} | |||
11400 | ||||
11401 | void VisitCXXConstructExpr(CXXConstructExpr *E) { | |||
11402 | if (E->getConstructor()->isCopyConstructor()) { | |||
11403 | Expr *ArgExpr = E->getArg(0); | |||
11404 | if (InitListExpr *ILE = dyn_cast<InitListExpr>(ArgExpr)) | |||
11405 | if (ILE->getNumInits() == 1) | |||
11406 | ArgExpr = ILE->getInit(0); | |||
11407 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(ArgExpr)) | |||
11408 | if (ICE->getCastKind() == CK_NoOp) | |||
11409 | ArgExpr = ICE->getSubExpr(); | |||
11410 | HandleValue(ArgExpr); | |||
11411 | return; | |||
11412 | } | |||
11413 | Inherited::VisitCXXConstructExpr(E); | |||
11414 | } | |||
11415 | ||||
11416 | void VisitCallExpr(CallExpr *E) { | |||
11417 | // Treat std::move as a use. | |||
11418 | if (E->isCallToStdMove()) { | |||
11419 | HandleValue(E->getArg(0)); | |||
11420 | return; | |||
11421 | } | |||
11422 | ||||
11423 | Inherited::VisitCallExpr(E); | |||
11424 | } | |||
11425 | ||||
11426 | void VisitBinaryOperator(BinaryOperator *E) { | |||
11427 | if (E->isCompoundAssignmentOp()) { | |||
11428 | HandleValue(E->getLHS()); | |||
11429 | Visit(E->getRHS()); | |||
11430 | return; | |||
11431 | } | |||
11432 | ||||
11433 | Inherited::VisitBinaryOperator(E); | |||
11434 | } | |||
11435 | ||||
11436 | // A custom visitor for BinaryConditionalOperator is needed because the | |||
11437 | // regular visitor would check the condition and true expression separately | |||
11438 | // but both point to the same place giving duplicate diagnostics. | |||
11439 | void VisitBinaryConditionalOperator(BinaryConditionalOperator *E) { | |||
11440 | Visit(E->getCond()); | |||
11441 | Visit(E->getFalseExpr()); | |||
11442 | } | |||
11443 | ||||
11444 | void HandleDeclRefExpr(DeclRefExpr *DRE) { | |||
11445 | Decl* ReferenceDecl = DRE->getDecl(); | |||
11446 | if (OrigDecl != ReferenceDecl) return; | |||
11447 | unsigned diag; | |||
11448 | if (isReferenceType) { | |||
11449 | diag = diag::warn_uninit_self_reference_in_reference_init; | |||
11450 | } else if (cast<VarDecl>(OrigDecl)->isStaticLocal()) { | |||
11451 | diag = diag::warn_static_self_reference_in_init; | |||
11452 | } else if (isa<TranslationUnitDecl>(OrigDecl->getDeclContext()) || | |||
11453 | isa<NamespaceDecl>(OrigDecl->getDeclContext()) || | |||
11454 | DRE->getDecl()->getType()->isRecordType()) { | |||
11455 | diag = diag::warn_uninit_self_reference_in_init; | |||
11456 | } else { | |||
11457 | // Local variables will be handled by the CFG analysis. | |||
11458 | return; | |||
11459 | } | |||
11460 | ||||
11461 | S.DiagRuntimeBehavior(DRE->getBeginLoc(), DRE, | |||
11462 | S.PDiag(diag) | |||
11463 | << DRE->getDecl() << OrigDecl->getLocation() | |||
11464 | << DRE->getSourceRange()); | |||
11465 | } | |||
11466 | }; | |||
11467 | ||||
11468 | /// CheckSelfReference - Warns if OrigDecl is used in expression E. | |||
11469 | static void CheckSelfReference(Sema &S, Decl* OrigDecl, Expr *E, | |||
11470 | bool DirectInit) { | |||
11471 | // Parameters arguments are occassionially constructed with itself, | |||
11472 | // for instance, in recursive functions. Skip them. | |||
11473 | if (isa<ParmVarDecl>(OrigDecl)) | |||
11474 | return; | |||
11475 | ||||
11476 | E = E->IgnoreParens(); | |||
11477 | ||||
11478 | // Skip checking T a = a where T is not a record or reference type. | |||
11479 | // Doing so is a way to silence uninitialized warnings. | |||
11480 | if (!DirectInit && !cast<VarDecl>(OrigDecl)->getType()->isRecordType()) | |||
11481 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) | |||
11482 | if (ICE->getCastKind() == CK_LValueToRValue) | |||
11483 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr())) | |||
11484 | if (DRE->getDecl() == OrigDecl) | |||
11485 | return; | |||
11486 | ||||
11487 | SelfReferenceChecker(S, OrigDecl).CheckExpr(E); | |||
11488 | } | |||
11489 | } // end anonymous namespace | |||
11490 | ||||
11491 | namespace { | |||
11492 | // Simple wrapper to add the name of a variable or (if no variable is | |||
11493 | // available) a DeclarationName into a diagnostic. | |||
11494 | struct VarDeclOrName { | |||
11495 | VarDecl *VDecl; | |||
11496 | DeclarationName Name; | |||
11497 | ||||
11498 | friend const Sema::SemaDiagnosticBuilder & | |||
11499 | operator<<(const Sema::SemaDiagnosticBuilder &Diag, VarDeclOrName VN) { | |||
11500 | return VN.VDecl ? Diag << VN.VDecl : Diag << VN.Name; | |||
11501 | } | |||
11502 | }; | |||
11503 | } // end anonymous namespace | |||
11504 | ||||
11505 | QualType Sema::deduceVarTypeFromInitializer(VarDecl *VDecl, | |||
11506 | DeclarationName Name, QualType Type, | |||
11507 | TypeSourceInfo *TSI, | |||
11508 | SourceRange Range, bool DirectInit, | |||
11509 | Expr *Init) { | |||
11510 | bool IsInitCapture = !VDecl; | |||
11511 | assert((!VDecl || !VDecl->isInitCapture()) &&(((!VDecl || !VDecl->isInitCapture()) && "init captures are expected to be deduced prior to initialization" ) ? static_cast<void> (0) : __assert_fail ("(!VDecl || !VDecl->isInitCapture()) && \"init captures are expected to be deduced prior to initialization\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11512, __PRETTY_FUNCTION__)) | |||
11512 | "init captures are expected to be deduced prior to initialization")(((!VDecl || !VDecl->isInitCapture()) && "init captures are expected to be deduced prior to initialization" ) ? static_cast<void> (0) : __assert_fail ("(!VDecl || !VDecl->isInitCapture()) && \"init captures are expected to be deduced prior to initialization\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11512, __PRETTY_FUNCTION__)); | |||
11513 | ||||
11514 | VarDeclOrName VN{VDecl, Name}; | |||
11515 | ||||
11516 | DeducedType *Deduced = Type->getContainedDeducedType(); | |||
11517 | assert(Deduced && "deduceVarTypeFromInitializer for non-deduced type")((Deduced && "deduceVarTypeFromInitializer for non-deduced type" ) ? static_cast<void> (0) : __assert_fail ("Deduced && \"deduceVarTypeFromInitializer for non-deduced type\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11517, __PRETTY_FUNCTION__)); | |||
11518 | ||||
11519 | // C++11 [dcl.spec.auto]p3 | |||
11520 | if (!Init) { | |||
11521 | assert(VDecl && "no init for init capture deduction?")((VDecl && "no init for init capture deduction?") ? static_cast <void> (0) : __assert_fail ("VDecl && \"no init for init capture deduction?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11521, __PRETTY_FUNCTION__)); | |||
11522 | ||||
11523 | // Except for class argument deduction, and then for an initializing | |||
11524 | // declaration only, i.e. no static at class scope or extern. | |||
11525 | if (!isa<DeducedTemplateSpecializationType>(Deduced) || | |||
11526 | VDecl->hasExternalStorage() || | |||
11527 | VDecl->isStaticDataMember()) { | |||
11528 | Diag(VDecl->getLocation(), diag::err_auto_var_requires_init) | |||
11529 | << VDecl->getDeclName() << Type; | |||
11530 | return QualType(); | |||
11531 | } | |||
11532 | } | |||
11533 | ||||
11534 | ArrayRef<Expr*> DeduceInits; | |||
11535 | if (Init) | |||
11536 | DeduceInits = Init; | |||
11537 | ||||
11538 | if (DirectInit) { | |||
11539 | if (auto *PL = dyn_cast_or_null<ParenListExpr>(Init)) | |||
11540 | DeduceInits = PL->exprs(); | |||
11541 | } | |||
11542 | ||||
11543 | if (isa<DeducedTemplateSpecializationType>(Deduced)) { | |||
11544 | assert(VDecl && "non-auto type for init capture deduction?")((VDecl && "non-auto type for init capture deduction?" ) ? static_cast<void> (0) : __assert_fail ("VDecl && \"non-auto type for init capture deduction?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11544, __PRETTY_FUNCTION__)); | |||
11545 | InitializedEntity Entity = InitializedEntity::InitializeVariable(VDecl); | |||
11546 | InitializationKind Kind = InitializationKind::CreateForInit( | |||
11547 | VDecl->getLocation(), DirectInit, Init); | |||
11548 | // FIXME: Initialization should not be taking a mutable list of inits. | |||
11549 | SmallVector<Expr*, 8> InitsCopy(DeduceInits.begin(), DeduceInits.end()); | |||
11550 | return DeduceTemplateSpecializationFromInitializer(TSI, Entity, Kind, | |||
11551 | InitsCopy); | |||
11552 | } | |||
11553 | ||||
11554 | if (DirectInit) { | |||
11555 | if (auto *IL = dyn_cast<InitListExpr>(Init)) | |||
11556 | DeduceInits = IL->inits(); | |||
11557 | } | |||
11558 | ||||
11559 | // Deduction only works if we have exactly one source expression. | |||
11560 | if (DeduceInits.empty()) { | |||
11561 | // It isn't possible to write this directly, but it is possible to | |||
11562 | // end up in this situation with "auto x(some_pack...);" | |||
11563 | Diag(Init->getBeginLoc(), IsInitCapture | |||
11564 | ? diag::err_init_capture_no_expression | |||
11565 | : diag::err_auto_var_init_no_expression) | |||
11566 | << VN << Type << Range; | |||
11567 | return QualType(); | |||
11568 | } | |||
11569 | ||||
11570 | if (DeduceInits.size() > 1) { | |||
11571 | Diag(DeduceInits[1]->getBeginLoc(), | |||
11572 | IsInitCapture ? diag::err_init_capture_multiple_expressions | |||
11573 | : diag::err_auto_var_init_multiple_expressions) | |||
11574 | << VN << Type << Range; | |||
11575 | return QualType(); | |||
11576 | } | |||
11577 | ||||
11578 | Expr *DeduceInit = DeduceInits[0]; | |||
11579 | if (DirectInit && isa<InitListExpr>(DeduceInit)) { | |||
11580 | Diag(Init->getBeginLoc(), IsInitCapture | |||
11581 | ? diag::err_init_capture_paren_braces | |||
11582 | : diag::err_auto_var_init_paren_braces) | |||
11583 | << isa<InitListExpr>(Init) << VN << Type << Range; | |||
11584 | return QualType(); | |||
11585 | } | |||
11586 | ||||
11587 | // Expressions default to 'id' when we're in a debugger. | |||
11588 | bool DefaultedAnyToId = false; | |||
11589 | if (getLangOpts().DebuggerCastResultToId && | |||
11590 | Init->getType() == Context.UnknownAnyTy && !IsInitCapture) { | |||
11591 | ExprResult Result = forceUnknownAnyToType(Init, Context.getObjCIdType()); | |||
11592 | if (Result.isInvalid()) { | |||
11593 | return QualType(); | |||
11594 | } | |||
11595 | Init = Result.get(); | |||
11596 | DefaultedAnyToId = true; | |||
11597 | } | |||
11598 | ||||
11599 | // C++ [dcl.decomp]p1: | |||
11600 | // If the assignment-expression [...] has array type A and no ref-qualifier | |||
11601 | // is present, e has type cv A | |||
11602 | if (VDecl && isa<DecompositionDecl>(VDecl) && | |||
11603 | Context.hasSameUnqualifiedType(Type, Context.getAutoDeductType()) && | |||
11604 | DeduceInit->getType()->isConstantArrayType()) | |||
11605 | return Context.getQualifiedType(DeduceInit->getType(), | |||
11606 | Type.getQualifiers()); | |||
11607 | ||||
11608 | QualType DeducedType; | |||
11609 | if (DeduceAutoType(TSI, DeduceInit, DeducedType) == DAR_Failed) { | |||
11610 | if (!IsInitCapture) | |||
11611 | DiagnoseAutoDeductionFailure(VDecl, DeduceInit); | |||
11612 | else if (isa<InitListExpr>(Init)) | |||
11613 | Diag(Range.getBegin(), | |||
11614 | diag::err_init_capture_deduction_failure_from_init_list) | |||
11615 | << VN | |||
11616 | << (DeduceInit->getType().isNull() ? TSI->getType() | |||
11617 | : DeduceInit->getType()) | |||
11618 | << DeduceInit->getSourceRange(); | |||
11619 | else | |||
11620 | Diag(Range.getBegin(), diag::err_init_capture_deduction_failure) | |||
11621 | << VN << TSI->getType() | |||
11622 | << (DeduceInit->getType().isNull() ? TSI->getType() | |||
11623 | : DeduceInit->getType()) | |||
11624 | << DeduceInit->getSourceRange(); | |||
11625 | } | |||
11626 | ||||
11627 | // Warn if we deduced 'id'. 'auto' usually implies type-safety, but using | |||
11628 | // 'id' instead of a specific object type prevents most of our usual | |||
11629 | // checks. | |||
11630 | // We only want to warn outside of template instantiations, though: | |||
11631 | // inside a template, the 'id' could have come from a parameter. | |||
11632 | if (!inTemplateInstantiation() && !DefaultedAnyToId && !IsInitCapture && | |||
11633 | !DeducedType.isNull() && DeducedType->isObjCIdType()) { | |||
11634 | SourceLocation Loc = TSI->getTypeLoc().getBeginLoc(); | |||
11635 | Diag(Loc, diag::warn_auto_var_is_id) << VN << Range; | |||
11636 | } | |||
11637 | ||||
11638 | return DeducedType; | |||
11639 | } | |||
11640 | ||||
11641 | bool Sema::DeduceVariableDeclarationType(VarDecl *VDecl, bool DirectInit, | |||
11642 | Expr *Init) { | |||
11643 | assert(!Init || !Init->containsErrors())((!Init || !Init->containsErrors()) ? static_cast<void> (0) : __assert_fail ("!Init || !Init->containsErrors()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11643, __PRETTY_FUNCTION__)); | |||
11644 | QualType DeducedType = deduceVarTypeFromInitializer( | |||
11645 | VDecl, VDecl->getDeclName(), VDecl->getType(), VDecl->getTypeSourceInfo(), | |||
11646 | VDecl->getSourceRange(), DirectInit, Init); | |||
11647 | if (DeducedType.isNull()) { | |||
11648 | VDecl->setInvalidDecl(); | |||
11649 | return true; | |||
11650 | } | |||
11651 | ||||
11652 | VDecl->setType(DeducedType); | |||
11653 | assert(VDecl->isLinkageValid())((VDecl->isLinkageValid()) ? static_cast<void> (0) : __assert_fail ("VDecl->isLinkageValid()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11653, __PRETTY_FUNCTION__)); | |||
11654 | ||||
11655 | // In ARC, infer lifetime. | |||
11656 | if (getLangOpts().ObjCAutoRefCount && inferObjCARCLifetime(VDecl)) | |||
11657 | VDecl->setInvalidDecl(); | |||
11658 | ||||
11659 | if (getLangOpts().OpenCL) | |||
11660 | deduceOpenCLAddressSpace(VDecl); | |||
11661 | ||||
11662 | // If this is a redeclaration, check that the type we just deduced matches | |||
11663 | // the previously declared type. | |||
11664 | if (VarDecl *Old = VDecl->getPreviousDecl()) { | |||
11665 | // We never need to merge the type, because we cannot form an incomplete | |||
11666 | // array of auto, nor deduce such a type. | |||
11667 | MergeVarDeclTypes(VDecl, Old, /*MergeTypeWithPrevious*/ false); | |||
11668 | } | |||
11669 | ||||
11670 | // Check the deduced type is valid for a variable declaration. | |||
11671 | CheckVariableDeclarationType(VDecl); | |||
11672 | return VDecl->isInvalidDecl(); | |||
11673 | } | |||
11674 | ||||
11675 | void Sema::checkNonTrivialCUnionInInitializer(const Expr *Init, | |||
11676 | SourceLocation Loc) { | |||
11677 | if (auto *EWC = dyn_cast<ExprWithCleanups>(Init)) | |||
11678 | Init = EWC->getSubExpr(); | |||
11679 | ||||
11680 | if (auto *CE = dyn_cast<ConstantExpr>(Init)) | |||
11681 | Init = CE->getSubExpr(); | |||
11682 | ||||
11683 | QualType InitType = Init->getType(); | |||
11684 | assert((InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() ||(((InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || InitType.hasNonTrivialToPrimitiveCopyCUnion()) && "shouldn't be called if type doesn't have a non-trivial C struct" ) ? static_cast<void> (0) : __assert_fail ("(InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || InitType.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C struct\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11686, __PRETTY_FUNCTION__)) | |||
11685 | InitType.hasNonTrivialToPrimitiveCopyCUnion()) &&(((InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || InitType.hasNonTrivialToPrimitiveCopyCUnion()) && "shouldn't be called if type doesn't have a non-trivial C struct" ) ? static_cast<void> (0) : __assert_fail ("(InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || InitType.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C struct\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11686, __PRETTY_FUNCTION__)) | |||
11686 | "shouldn't be called if type doesn't have a non-trivial C struct")(((InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || InitType.hasNonTrivialToPrimitiveCopyCUnion()) && "shouldn't be called if type doesn't have a non-trivial C struct" ) ? static_cast<void> (0) : __assert_fail ("(InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || InitType.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C struct\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11686, __PRETTY_FUNCTION__)); | |||
11687 | if (auto *ILE = dyn_cast<InitListExpr>(Init)) { | |||
11688 | for (auto I : ILE->inits()) { | |||
11689 | if (!I->getType().hasNonTrivialToPrimitiveDefaultInitializeCUnion() && | |||
11690 | !I->getType().hasNonTrivialToPrimitiveCopyCUnion()) | |||
11691 | continue; | |||
11692 | SourceLocation SL = I->getExprLoc(); | |||
11693 | checkNonTrivialCUnionInInitializer(I, SL.isValid() ? SL : Loc); | |||
11694 | } | |||
11695 | return; | |||
11696 | } | |||
11697 | ||||
11698 | if (isa<ImplicitValueInitExpr>(Init)) { | |||
11699 | if (InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion()) | |||
11700 | checkNonTrivialCUnion(InitType, Loc, NTCUC_DefaultInitializedObject, | |||
11701 | NTCUK_Init); | |||
11702 | } else { | |||
11703 | // Assume all other explicit initializers involving copying some existing | |||
11704 | // object. | |||
11705 | // TODO: ignore any explicit initializers where we can guarantee | |||
11706 | // copy-elision. | |||
11707 | if (InitType.hasNonTrivialToPrimitiveCopyCUnion()) | |||
11708 | checkNonTrivialCUnion(InitType, Loc, NTCUC_CopyInit, NTCUK_Copy); | |||
11709 | } | |||
11710 | } | |||
11711 | ||||
11712 | namespace { | |||
11713 | ||||
11714 | bool shouldIgnoreForRecordTriviality(const FieldDecl *FD) { | |||
11715 | // Ignore unavailable fields. A field can be marked as unavailable explicitly | |||
11716 | // in the source code or implicitly by the compiler if it is in a union | |||
11717 | // defined in a system header and has non-trivial ObjC ownership | |||
11718 | // qualifications. We don't want those fields to participate in determining | |||
11719 | // whether the containing union is non-trivial. | |||
11720 | return FD->hasAttr<UnavailableAttr>(); | |||
11721 | } | |||
11722 | ||||
11723 | struct DiagNonTrivalCUnionDefaultInitializeVisitor | |||
11724 | : DefaultInitializedTypeVisitor<DiagNonTrivalCUnionDefaultInitializeVisitor, | |||
11725 | void> { | |||
11726 | using Super = | |||
11727 | DefaultInitializedTypeVisitor<DiagNonTrivalCUnionDefaultInitializeVisitor, | |||
11728 | void>; | |||
11729 | ||||
11730 | DiagNonTrivalCUnionDefaultInitializeVisitor( | |||
11731 | QualType OrigTy, SourceLocation OrigLoc, | |||
11732 | Sema::NonTrivialCUnionContext UseContext, Sema &S) | |||
11733 | : OrigTy(OrigTy), OrigLoc(OrigLoc), UseContext(UseContext), S(S) {} | |||
11734 | ||||
11735 | void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType QT, | |||
11736 | const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11737 | if (const auto *AT = S.Context.getAsArrayType(QT)) | |||
11738 | return this->asDerived().visit(S.Context.getBaseElementType(AT), FD, | |||
11739 | InNonTrivialUnion); | |||
11740 | return Super::visitWithKind(PDIK, QT, FD, InNonTrivialUnion); | |||
11741 | } | |||
11742 | ||||
11743 | void visitARCStrong(QualType QT, const FieldDecl *FD, | |||
11744 | bool InNonTrivialUnion) { | |||
11745 | if (InNonTrivialUnion) | |||
11746 | S.Diag(FD->getLocation(), diag::note_non_trivial_c_union) | |||
11747 | << 1 << 0 << QT << FD->getName(); | |||
11748 | } | |||
11749 | ||||
11750 | void visitARCWeak(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11751 | if (InNonTrivialUnion) | |||
11752 | S.Diag(FD->getLocation(), diag::note_non_trivial_c_union) | |||
11753 | << 1 << 0 << QT << FD->getName(); | |||
11754 | } | |||
11755 | ||||
11756 | void visitStruct(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11757 | const RecordDecl *RD = QT->castAs<RecordType>()->getDecl(); | |||
11758 | if (RD->isUnion()) { | |||
11759 | if (OrigLoc.isValid()) { | |||
11760 | bool IsUnion = false; | |||
11761 | if (auto *OrigRD = OrigTy->getAsRecordDecl()) | |||
11762 | IsUnion = OrigRD->isUnion(); | |||
11763 | S.Diag(OrigLoc, diag::err_non_trivial_c_union_in_invalid_context) | |||
11764 | << 0 << OrigTy << IsUnion << UseContext; | |||
11765 | // Reset OrigLoc so that this diagnostic is emitted only once. | |||
11766 | OrigLoc = SourceLocation(); | |||
11767 | } | |||
11768 | InNonTrivialUnion = true; | |||
11769 | } | |||
11770 | ||||
11771 | if (InNonTrivialUnion) | |||
11772 | S.Diag(RD->getLocation(), diag::note_non_trivial_c_union) | |||
11773 | << 0 << 0 << QT.getUnqualifiedType() << ""; | |||
11774 | ||||
11775 | for (const FieldDecl *FD : RD->fields()) | |||
11776 | if (!shouldIgnoreForRecordTriviality(FD)) | |||
11777 | asDerived().visit(FD->getType(), FD, InNonTrivialUnion); | |||
11778 | } | |||
11779 | ||||
11780 | void visitTrivial(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) {} | |||
11781 | ||||
11782 | // The non-trivial C union type or the struct/union type that contains a | |||
11783 | // non-trivial C union. | |||
11784 | QualType OrigTy; | |||
11785 | SourceLocation OrigLoc; | |||
11786 | Sema::NonTrivialCUnionContext UseContext; | |||
11787 | Sema &S; | |||
11788 | }; | |||
11789 | ||||
11790 | struct DiagNonTrivalCUnionDestructedTypeVisitor | |||
11791 | : DestructedTypeVisitor<DiagNonTrivalCUnionDestructedTypeVisitor, void> { | |||
11792 | using Super = | |||
11793 | DestructedTypeVisitor<DiagNonTrivalCUnionDestructedTypeVisitor, void>; | |||
11794 | ||||
11795 | DiagNonTrivalCUnionDestructedTypeVisitor( | |||
11796 | QualType OrigTy, SourceLocation OrigLoc, | |||
11797 | Sema::NonTrivialCUnionContext UseContext, Sema &S) | |||
11798 | : OrigTy(OrigTy), OrigLoc(OrigLoc), UseContext(UseContext), S(S) {} | |||
11799 | ||||
11800 | void visitWithKind(QualType::DestructionKind DK, QualType QT, | |||
11801 | const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11802 | if (const auto *AT = S.Context.getAsArrayType(QT)) | |||
11803 | return this->asDerived().visit(S.Context.getBaseElementType(AT), FD, | |||
11804 | InNonTrivialUnion); | |||
11805 | return Super::visitWithKind(DK, QT, FD, InNonTrivialUnion); | |||
11806 | } | |||
11807 | ||||
11808 | void visitARCStrong(QualType QT, const FieldDecl *FD, | |||
11809 | bool InNonTrivialUnion) { | |||
11810 | if (InNonTrivialUnion) | |||
11811 | S.Diag(FD->getLocation(), diag::note_non_trivial_c_union) | |||
11812 | << 1 << 1 << QT << FD->getName(); | |||
11813 | } | |||
11814 | ||||
11815 | void visitARCWeak(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11816 | if (InNonTrivialUnion) | |||
11817 | S.Diag(FD->getLocation(), diag::note_non_trivial_c_union) | |||
11818 | << 1 << 1 << QT << FD->getName(); | |||
11819 | } | |||
11820 | ||||
11821 | void visitStruct(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11822 | const RecordDecl *RD = QT->castAs<RecordType>()->getDecl(); | |||
11823 | if (RD->isUnion()) { | |||
11824 | if (OrigLoc.isValid()) { | |||
11825 | bool IsUnion = false; | |||
11826 | if (auto *OrigRD = OrigTy->getAsRecordDecl()) | |||
11827 | IsUnion = OrigRD->isUnion(); | |||
11828 | S.Diag(OrigLoc, diag::err_non_trivial_c_union_in_invalid_context) | |||
11829 | << 1 << OrigTy << IsUnion << UseContext; | |||
11830 | // Reset OrigLoc so that this diagnostic is emitted only once. | |||
11831 | OrigLoc = SourceLocation(); | |||
11832 | } | |||
11833 | InNonTrivialUnion = true; | |||
11834 | } | |||
11835 | ||||
11836 | if (InNonTrivialUnion) | |||
11837 | S.Diag(RD->getLocation(), diag::note_non_trivial_c_union) | |||
11838 | << 0 << 1 << QT.getUnqualifiedType() << ""; | |||
11839 | ||||
11840 | for (const FieldDecl *FD : RD->fields()) | |||
11841 | if (!shouldIgnoreForRecordTriviality(FD)) | |||
11842 | asDerived().visit(FD->getType(), FD, InNonTrivialUnion); | |||
11843 | } | |||
11844 | ||||
11845 | void visitTrivial(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) {} | |||
11846 | void visitCXXDestructor(QualType QT, const FieldDecl *FD, | |||
11847 | bool InNonTrivialUnion) {} | |||
11848 | ||||
11849 | // The non-trivial C union type or the struct/union type that contains a | |||
11850 | // non-trivial C union. | |||
11851 | QualType OrigTy; | |||
11852 | SourceLocation OrigLoc; | |||
11853 | Sema::NonTrivialCUnionContext UseContext; | |||
11854 | Sema &S; | |||
11855 | }; | |||
11856 | ||||
11857 | struct DiagNonTrivalCUnionCopyVisitor | |||
11858 | : CopiedTypeVisitor<DiagNonTrivalCUnionCopyVisitor, false, void> { | |||
11859 | using Super = CopiedTypeVisitor<DiagNonTrivalCUnionCopyVisitor, false, void>; | |||
11860 | ||||
11861 | DiagNonTrivalCUnionCopyVisitor(QualType OrigTy, SourceLocation OrigLoc, | |||
11862 | Sema::NonTrivialCUnionContext UseContext, | |||
11863 | Sema &S) | |||
11864 | : OrigTy(OrigTy), OrigLoc(OrigLoc), UseContext(UseContext), S(S) {} | |||
11865 | ||||
11866 | void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType QT, | |||
11867 | const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11868 | if (const auto *AT = S.Context.getAsArrayType(QT)) | |||
11869 | return this->asDerived().visit(S.Context.getBaseElementType(AT), FD, | |||
11870 | InNonTrivialUnion); | |||
11871 | return Super::visitWithKind(PCK, QT, FD, InNonTrivialUnion); | |||
11872 | } | |||
11873 | ||||
11874 | void visitARCStrong(QualType QT, const FieldDecl *FD, | |||
11875 | bool InNonTrivialUnion) { | |||
11876 | if (InNonTrivialUnion) | |||
11877 | S.Diag(FD->getLocation(), diag::note_non_trivial_c_union) | |||
11878 | << 1 << 2 << QT << FD->getName(); | |||
11879 | } | |||
11880 | ||||
11881 | void visitARCWeak(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11882 | if (InNonTrivialUnion) | |||
11883 | S.Diag(FD->getLocation(), diag::note_non_trivial_c_union) | |||
11884 | << 1 << 2 << QT << FD->getName(); | |||
11885 | } | |||
11886 | ||||
11887 | void visitStruct(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) { | |||
11888 | const RecordDecl *RD = QT->castAs<RecordType>()->getDecl(); | |||
11889 | if (RD->isUnion()) { | |||
11890 | if (OrigLoc.isValid()) { | |||
11891 | bool IsUnion = false; | |||
11892 | if (auto *OrigRD = OrigTy->getAsRecordDecl()) | |||
11893 | IsUnion = OrigRD->isUnion(); | |||
11894 | S.Diag(OrigLoc, diag::err_non_trivial_c_union_in_invalid_context) | |||
11895 | << 2 << OrigTy << IsUnion << UseContext; | |||
11896 | // Reset OrigLoc so that this diagnostic is emitted only once. | |||
11897 | OrigLoc = SourceLocation(); | |||
11898 | } | |||
11899 | InNonTrivialUnion = true; | |||
11900 | } | |||
11901 | ||||
11902 | if (InNonTrivialUnion) | |||
11903 | S.Diag(RD->getLocation(), diag::note_non_trivial_c_union) | |||
11904 | << 0 << 2 << QT.getUnqualifiedType() << ""; | |||
11905 | ||||
11906 | for (const FieldDecl *FD : RD->fields()) | |||
11907 | if (!shouldIgnoreForRecordTriviality(FD)) | |||
11908 | asDerived().visit(FD->getType(), FD, InNonTrivialUnion); | |||
11909 | } | |||
11910 | ||||
11911 | void preVisit(QualType::PrimitiveCopyKind PCK, QualType QT, | |||
11912 | const FieldDecl *FD, bool InNonTrivialUnion) {} | |||
11913 | void visitTrivial(QualType QT, const FieldDecl *FD, bool InNonTrivialUnion) {} | |||
11914 | void visitVolatileTrivial(QualType QT, const FieldDecl *FD, | |||
11915 | bool InNonTrivialUnion) {} | |||
11916 | ||||
11917 | // The non-trivial C union type or the struct/union type that contains a | |||
11918 | // non-trivial C union. | |||
11919 | QualType OrigTy; | |||
11920 | SourceLocation OrigLoc; | |||
11921 | Sema::NonTrivialCUnionContext UseContext; | |||
11922 | Sema &S; | |||
11923 | }; | |||
11924 | ||||
11925 | } // namespace | |||
11926 | ||||
11927 | void Sema::checkNonTrivialCUnion(QualType QT, SourceLocation Loc, | |||
11928 | NonTrivialCUnionContext UseContext, | |||
11929 | unsigned NonTrivialKind) { | |||
11930 | assert((QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() ||(((QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT .hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion ()) && "shouldn't be called if type doesn't have a non-trivial C union" ) ? static_cast<void> (0) : __assert_fail ("(QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT.hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C union\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11933, __PRETTY_FUNCTION__)) | |||
11931 | QT.hasNonTrivialToPrimitiveDestructCUnion() ||(((QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT .hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion ()) && "shouldn't be called if type doesn't have a non-trivial C union" ) ? static_cast<void> (0) : __assert_fail ("(QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT.hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C union\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11933, __PRETTY_FUNCTION__)) | |||
11932 | QT.hasNonTrivialToPrimitiveCopyCUnion()) &&(((QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT .hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion ()) && "shouldn't be called if type doesn't have a non-trivial C union" ) ? static_cast<void> (0) : __assert_fail ("(QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT.hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C union\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11933, __PRETTY_FUNCTION__)) | |||
11933 | "shouldn't be called if type doesn't have a non-trivial C union")(((QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT .hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion ()) && "shouldn't be called if type doesn't have a non-trivial C union" ) ? static_cast<void> (0) : __assert_fail ("(QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || QT.hasNonTrivialToPrimitiveDestructCUnion() || QT.hasNonTrivialToPrimitiveCopyCUnion()) && \"shouldn't be called if type doesn't have a non-trivial C union\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11933, __PRETTY_FUNCTION__)); | |||
11934 | ||||
11935 | if ((NonTrivialKind & NTCUK_Init) && | |||
11936 | QT.hasNonTrivialToPrimitiveDefaultInitializeCUnion()) | |||
11937 | DiagNonTrivalCUnionDefaultInitializeVisitor(QT, Loc, UseContext, *this) | |||
11938 | .visit(QT, nullptr, false); | |||
11939 | if ((NonTrivialKind & NTCUK_Destruct) && | |||
11940 | QT.hasNonTrivialToPrimitiveDestructCUnion()) | |||
11941 | DiagNonTrivalCUnionDestructedTypeVisitor(QT, Loc, UseContext, *this) | |||
11942 | .visit(QT, nullptr, false); | |||
11943 | if ((NonTrivialKind & NTCUK_Copy) && QT.hasNonTrivialToPrimitiveCopyCUnion()) | |||
11944 | DiagNonTrivalCUnionCopyVisitor(QT, Loc, UseContext, *this) | |||
11945 | .visit(QT, nullptr, false); | |||
11946 | } | |||
11947 | ||||
11948 | /// AddInitializerToDecl - Adds the initializer Init to the | |||
11949 | /// declaration dcl. If DirectInit is true, this is C++ direct | |||
11950 | /// initialization rather than copy initialization. | |||
11951 | void Sema::AddInitializerToDecl(Decl *RealDecl, Expr *Init, bool DirectInit) { | |||
11952 | // If there is no declaration, there was an error parsing it. Just ignore | |||
11953 | // the initializer. | |||
11954 | if (!RealDecl || RealDecl->isInvalidDecl()) { | |||
11955 | CorrectDelayedTyposInExpr(Init, dyn_cast_or_null<VarDecl>(RealDecl)); | |||
11956 | return; | |||
11957 | } | |||
11958 | ||||
11959 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(RealDecl)) { | |||
11960 | // Pure-specifiers are handled in ActOnPureSpecifier. | |||
11961 | Diag(Method->getLocation(), diag::err_member_function_initialization) | |||
11962 | << Method->getDeclName() << Init->getSourceRange(); | |||
11963 | Method->setInvalidDecl(); | |||
11964 | return; | |||
11965 | } | |||
11966 | ||||
11967 | VarDecl *VDecl = dyn_cast<VarDecl>(RealDecl); | |||
11968 | if (!VDecl) { | |||
11969 | assert(!isa<FieldDecl>(RealDecl) && "field init shouldn't get here")((!isa<FieldDecl>(RealDecl) && "field init shouldn't get here" ) ? static_cast<void> (0) : __assert_fail ("!isa<FieldDecl>(RealDecl) && \"field init shouldn't get here\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 11969, __PRETTY_FUNCTION__)); | |||
11970 | Diag(RealDecl->getLocation(), diag::err_illegal_initializer); | |||
11971 | RealDecl->setInvalidDecl(); | |||
11972 | return; | |||
11973 | } | |||
11974 | ||||
11975 | // C++11 [decl.spec.auto]p6. Deduce the type which 'auto' stands in for. | |||
11976 | if (VDecl->getType()->isUndeducedType()) { | |||
11977 | // Attempt typo correction early so that the type of the init expression can | |||
11978 | // be deduced based on the chosen correction if the original init contains a | |||
11979 | // TypoExpr. | |||
11980 | ExprResult Res = CorrectDelayedTyposInExpr(Init, VDecl); | |||
11981 | if (!Res.isUsable()) { | |||
11982 | // There are unresolved typos in Init, just drop them. | |||
11983 | // FIXME: improve the recovery strategy to preserve the Init. | |||
11984 | RealDecl->setInvalidDecl(); | |||
11985 | return; | |||
11986 | } | |||
11987 | if (Res.get()->containsErrors()) { | |||
11988 | // Invalidate the decl as we don't know the type for recovery-expr yet. | |||
11989 | RealDecl->setInvalidDecl(); | |||
11990 | VDecl->setInit(Res.get()); | |||
11991 | return; | |||
11992 | } | |||
11993 | Init = Res.get(); | |||
11994 | ||||
11995 | if (DeduceVariableDeclarationType(VDecl, DirectInit, Init)) | |||
11996 | return; | |||
11997 | } | |||
11998 | ||||
11999 | // dllimport cannot be used on variable definitions. | |||
12000 | if (VDecl->hasAttr<DLLImportAttr>() && !VDecl->isStaticDataMember()) { | |||
12001 | Diag(VDecl->getLocation(), diag::err_attribute_dllimport_data_definition); | |||
12002 | VDecl->setInvalidDecl(); | |||
12003 | return; | |||
12004 | } | |||
12005 | ||||
12006 | if (VDecl->isLocalVarDecl() && VDecl->hasExternalStorage()) { | |||
12007 | // C99 6.7.8p5. C++ has no such restriction, but that is a defect. | |||
12008 | Diag(VDecl->getLocation(), diag::err_block_extern_cant_init); | |||
12009 | VDecl->setInvalidDecl(); | |||
12010 | return; | |||
12011 | } | |||
12012 | ||||
12013 | if (!VDecl->getType()->isDependentType()) { | |||
12014 | // A definition must end up with a complete type, which means it must be | |||
12015 | // complete with the restriction that an array type might be completed by | |||
12016 | // the initializer; note that later code assumes this restriction. | |||
12017 | QualType BaseDeclType = VDecl->getType(); | |||
12018 | if (const ArrayType *Array = Context.getAsIncompleteArrayType(BaseDeclType)) | |||
12019 | BaseDeclType = Array->getElementType(); | |||
12020 | if (RequireCompleteType(VDecl->getLocation(), BaseDeclType, | |||
12021 | diag::err_typecheck_decl_incomplete_type)) { | |||
12022 | RealDecl->setInvalidDecl(); | |||
12023 | return; | |||
12024 | } | |||
12025 | ||||
12026 | // The variable can not have an abstract class type. | |||
12027 | if (RequireNonAbstractType(VDecl->getLocation(), VDecl->getType(), | |||
12028 | diag::err_abstract_type_in_decl, | |||
12029 | AbstractVariableType)) | |||
12030 | VDecl->setInvalidDecl(); | |||
12031 | } | |||
12032 | ||||
12033 | // If adding the initializer will turn this declaration into a definition, | |||
12034 | // and we already have a definition for this variable, diagnose or otherwise | |||
12035 | // handle the situation. | |||
12036 | VarDecl *Def; | |||
12037 | if ((Def = VDecl->getDefinition()) && Def != VDecl && | |||
12038 | (!VDecl->isStaticDataMember() || VDecl->isOutOfLine()) && | |||
12039 | !VDecl->isThisDeclarationADemotedDefinition() && | |||
12040 | checkVarDeclRedefinition(Def, VDecl)) | |||
12041 | return; | |||
12042 | ||||
12043 | if (getLangOpts().CPlusPlus) { | |||
12044 | // C++ [class.static.data]p4 | |||
12045 | // If a static data member is of const integral or const | |||
12046 | // enumeration type, its declaration in the class definition can | |||
12047 | // specify a constant-initializer which shall be an integral | |||
12048 | // constant expression (5.19). In that case, the member can appear | |||
12049 | // in integral constant expressions. The member shall still be | |||
12050 | // defined in a namespace scope if it is used in the program and the | |||
12051 | // namespace scope definition shall not contain an initializer. | |||
12052 | // | |||
12053 | // We already performed a redefinition check above, but for static | |||
12054 | // data members we also need to check whether there was an in-class | |||
12055 | // declaration with an initializer. | |||
12056 | if (VDecl->isStaticDataMember() && VDecl->getCanonicalDecl()->hasInit()) { | |||
12057 | Diag(Init->getExprLoc(), diag::err_static_data_member_reinitialization) | |||
12058 | << VDecl->getDeclName(); | |||
12059 | Diag(VDecl->getCanonicalDecl()->getInit()->getExprLoc(), | |||
12060 | diag::note_previous_initializer) | |||
12061 | << 0; | |||
12062 | return; | |||
12063 | } | |||
12064 | ||||
12065 | if (VDecl->hasLocalStorage()) | |||
12066 | setFunctionHasBranchProtectedScope(); | |||
12067 | ||||
12068 | if (DiagnoseUnexpandedParameterPack(Init, UPPC_Initializer)) { | |||
12069 | VDecl->setInvalidDecl(); | |||
12070 | return; | |||
12071 | } | |||
12072 | } | |||
12073 | ||||
12074 | // OpenCL 1.1 6.5.2: "Variables allocated in the __local address space inside | |||
12075 | // a kernel function cannot be initialized." | |||
12076 | if (VDecl->getType().getAddressSpace() == LangAS::opencl_local) { | |||
12077 | Diag(VDecl->getLocation(), diag::err_local_cant_init); | |||
12078 | VDecl->setInvalidDecl(); | |||
12079 | return; | |||
12080 | } | |||
12081 | ||||
12082 | // The LoaderUninitialized attribute acts as a definition (of undef). | |||
12083 | if (VDecl->hasAttr<LoaderUninitializedAttr>()) { | |||
12084 | Diag(VDecl->getLocation(), diag::err_loader_uninitialized_cant_init); | |||
12085 | VDecl->setInvalidDecl(); | |||
12086 | return; | |||
12087 | } | |||
12088 | ||||
12089 | // Get the decls type and save a reference for later, since | |||
12090 | // CheckInitializerTypes may change it. | |||
12091 | QualType DclT = VDecl->getType(), SavT = DclT; | |||
12092 | ||||
12093 | // Expressions default to 'id' when we're in a debugger | |||
12094 | // and we are assigning it to a variable of Objective-C pointer type. | |||
12095 | if (getLangOpts().DebuggerCastResultToId && DclT->isObjCObjectPointerType() && | |||
12096 | Init->getType() == Context.UnknownAnyTy) { | |||
12097 | ExprResult Result = forceUnknownAnyToType(Init, Context.getObjCIdType()); | |||
12098 | if (Result.isInvalid()) { | |||
12099 | VDecl->setInvalidDecl(); | |||
12100 | return; | |||
12101 | } | |||
12102 | Init = Result.get(); | |||
12103 | } | |||
12104 | ||||
12105 | // Perform the initialization. | |||
12106 | ParenListExpr *CXXDirectInit = dyn_cast<ParenListExpr>(Init); | |||
12107 | if (!VDecl->isInvalidDecl()) { | |||
12108 | InitializedEntity Entity = InitializedEntity::InitializeVariable(VDecl); | |||
12109 | InitializationKind Kind = InitializationKind::CreateForInit( | |||
12110 | VDecl->getLocation(), DirectInit, Init); | |||
12111 | ||||
12112 | MultiExprArg Args = Init; | |||
12113 | if (CXXDirectInit) | |||
12114 | Args = MultiExprArg(CXXDirectInit->getExprs(), | |||
12115 | CXXDirectInit->getNumExprs()); | |||
12116 | ||||
12117 | // Try to correct any TypoExprs in the initialization arguments. | |||
12118 | for (size_t Idx = 0; Idx < Args.size(); ++Idx) { | |||
12119 | ExprResult Res = CorrectDelayedTyposInExpr( | |||
12120 | Args[Idx], VDecl, /*RecoverUncorrectedTypos=*/true, | |||
12121 | [this, Entity, Kind](Expr *E) { | |||
12122 | InitializationSequence Init(*this, Entity, Kind, MultiExprArg(E)); | |||
12123 | return Init.Failed() ? ExprError() : E; | |||
12124 | }); | |||
12125 | if (Res.isInvalid()) { | |||
12126 | VDecl->setInvalidDecl(); | |||
12127 | } else if (Res.get() != Args[Idx]) { | |||
12128 | Args[Idx] = Res.get(); | |||
12129 | } | |||
12130 | } | |||
12131 | if (VDecl->isInvalidDecl()) | |||
12132 | return; | |||
12133 | ||||
12134 | InitializationSequence InitSeq(*this, Entity, Kind, Args, | |||
12135 | /*TopLevelOfInitList=*/false, | |||
12136 | /*TreatUnavailableAsInvalid=*/false); | |||
12137 | ExprResult Result = InitSeq.Perform(*this, Entity, Kind, Args, &DclT); | |||
12138 | if (Result.isInvalid()) { | |||
12139 | // If the provied initializer fails to initialize the var decl, | |||
12140 | // we attach a recovery expr for better recovery. | |||
12141 | auto RecoveryExpr = | |||
12142 | CreateRecoveryExpr(Init->getBeginLoc(), Init->getEndLoc(), Args); | |||
12143 | if (RecoveryExpr.get()) | |||
12144 | VDecl->setInit(RecoveryExpr.get()); | |||
12145 | return; | |||
12146 | } | |||
12147 | ||||
12148 | Init = Result.getAs<Expr>(); | |||
12149 | } | |||
12150 | ||||
12151 | // Check for self-references within variable initializers. | |||
12152 | // Variables declared within a function/method body (except for references) | |||
12153 | // are handled by a dataflow analysis. | |||
12154 | // This is undefined behavior in C++, but valid in C. | |||
12155 | if (getLangOpts().CPlusPlus) { | |||
12156 | if (!VDecl->hasLocalStorage() || VDecl->getType()->isRecordType() || | |||
12157 | VDecl->getType()->isReferenceType()) { | |||
12158 | CheckSelfReference(*this, RealDecl, Init, DirectInit); | |||
12159 | } | |||
12160 | } | |||
12161 | ||||
12162 | // If the type changed, it means we had an incomplete type that was | |||
12163 | // completed by the initializer. For example: | |||
12164 | // int ary[] = { 1, 3, 5 }; | |||
12165 | // "ary" transitions from an IncompleteArrayType to a ConstantArrayType. | |||
12166 | if (!VDecl->isInvalidDecl() && (DclT != SavT)) | |||
12167 | VDecl->setType(DclT); | |||
12168 | ||||
12169 | if (!VDecl->isInvalidDecl()) { | |||
12170 | checkUnsafeAssigns(VDecl->getLocation(), VDecl->getType(), Init); | |||
12171 | ||||
12172 | if (VDecl->hasAttr<BlocksAttr>()) | |||
12173 | checkRetainCycles(VDecl, Init); | |||
12174 | ||||
12175 | // It is safe to assign a weak reference into a strong variable. | |||
12176 | // Although this code can still have problems: | |||
12177 | // id x = self.weakProp; | |||
12178 | // id y = self.weakProp; | |||
12179 | // we do not warn to warn spuriously when 'x' and 'y' are on separate | |||
12180 | // paths through the function. This should be revisited if | |||
12181 | // -Wrepeated-use-of-weak is made flow-sensitive. | |||
12182 | if (FunctionScopeInfo *FSI = getCurFunction()) | |||
12183 | if ((VDecl->getType().getObjCLifetime() == Qualifiers::OCL_Strong || | |||
12184 | VDecl->getType().isNonWeakInMRRWithObjCWeak(Context)) && | |||
12185 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, | |||
12186 | Init->getBeginLoc())) | |||
12187 | FSI->markSafeWeakUse(Init); | |||
12188 | } | |||
12189 | ||||
12190 | // The initialization is usually a full-expression. | |||
12191 | // | |||
12192 | // FIXME: If this is a braced initialization of an aggregate, it is not | |||
12193 | // an expression, and each individual field initializer is a separate | |||
12194 | // full-expression. For instance, in: | |||
12195 | // | |||
12196 | // struct Temp { ~Temp(); }; | |||
12197 | // struct S { S(Temp); }; | |||
12198 | // struct T { S a, b; } t = { Temp(), Temp() } | |||
12199 | // | |||
12200 | // we should destroy the first Temp before constructing the second. | |||
12201 | ExprResult Result = | |||
12202 | ActOnFinishFullExpr(Init, VDecl->getLocation(), | |||
12203 | /*DiscardedValue*/ false, VDecl->isConstexpr()); | |||
12204 | if (Result.isInvalid()) { | |||
12205 | VDecl->setInvalidDecl(); | |||
12206 | return; | |||
12207 | } | |||
12208 | Init = Result.get(); | |||
12209 | ||||
12210 | // Attach the initializer to the decl. | |||
12211 | VDecl->setInit(Init); | |||
12212 | ||||
12213 | if (VDecl->isLocalVarDecl()) { | |||
12214 | // Don't check the initializer if the declaration is malformed. | |||
12215 | if (VDecl->isInvalidDecl()) { | |||
12216 | // do nothing | |||
12217 | ||||
12218 | // OpenCL v1.2 s6.5.3: __constant locals must be constant-initialized. | |||
12219 | // This is true even in C++ for OpenCL. | |||
12220 | } else if (VDecl->getType().getAddressSpace() == LangAS::opencl_constant) { | |||
12221 | CheckForConstantInitializer(Init, DclT); | |||
12222 | ||||
12223 | // Otherwise, C++ does not restrict the initializer. | |||
12224 | } else if (getLangOpts().CPlusPlus) { | |||
12225 | // do nothing | |||
12226 | ||||
12227 | // C99 6.7.8p4: All the expressions in an initializer for an object that has | |||
12228 | // static storage duration shall be constant expressions or string literals. | |||
12229 | } else if (VDecl->getStorageClass() == SC_Static) { | |||
12230 | CheckForConstantInitializer(Init, DclT); | |||
12231 | ||||
12232 | // C89 is stricter than C99 for aggregate initializers. | |||
12233 | // C89 6.5.7p3: All the expressions [...] in an initializer list | |||
12234 | // for an object that has aggregate or union type shall be | |||
12235 | // constant expressions. | |||
12236 | } else if (!getLangOpts().C99 && VDecl->getType()->isAggregateType() && | |||
12237 | isa<InitListExpr>(Init)) { | |||
12238 | const Expr *Culprit; | |||
12239 | if (!Init->isConstantInitializer(Context, false, &Culprit)) { | |||
12240 | Diag(Culprit->getExprLoc(), | |||
12241 | diag::ext_aggregate_init_not_constant) | |||
12242 | << Culprit->getSourceRange(); | |||
12243 | } | |||
12244 | } | |||
12245 | ||||
12246 | if (auto *E = dyn_cast<ExprWithCleanups>(Init)) | |||
12247 | if (auto *BE = dyn_cast<BlockExpr>(E->getSubExpr()->IgnoreParens())) | |||
12248 | if (VDecl->hasLocalStorage()) | |||
12249 | BE->getBlockDecl()->setCanAvoidCopyToHeap(); | |||
12250 | } else if (VDecl->isStaticDataMember() && !VDecl->isInline() && | |||
12251 | VDecl->getLexicalDeclContext()->isRecord()) { | |||
12252 | // This is an in-class initialization for a static data member, e.g., | |||
12253 | // | |||
12254 | // struct S { | |||
12255 | // static const int value = 17; | |||
12256 | // }; | |||
12257 | ||||
12258 | // C++ [class.mem]p4: | |||
12259 | // A member-declarator can contain a constant-initializer only | |||
12260 | // if it declares a static member (9.4) of const integral or | |||
12261 | // const enumeration type, see 9.4.2. | |||
12262 | // | |||
12263 | // C++11 [class.static.data]p3: | |||
12264 | // If a non-volatile non-inline const static data member is of integral | |||
12265 | // or enumeration type, its declaration in the class definition can | |||
12266 | // specify a brace-or-equal-initializer in which every initializer-clause | |||
12267 | // that is an assignment-expression is a constant expression. A static | |||
12268 | // data member of literal type can be declared in the class definition | |||
12269 | // with the constexpr specifier; if so, its declaration shall specify a | |||
12270 | // brace-or-equal-initializer in which every initializer-clause that is | |||
12271 | // an assignment-expression is a constant expression. | |||
12272 | ||||
12273 | // Do nothing on dependent types. | |||
12274 | if (DclT->isDependentType()) { | |||
12275 | ||||
12276 | // Allow any 'static constexpr' members, whether or not they are of literal | |||
12277 | // type. We separately check that every constexpr variable is of literal | |||
12278 | // type. | |||
12279 | } else if (VDecl->isConstexpr()) { | |||
12280 | ||||
12281 | // Require constness. | |||
12282 | } else if (!DclT.isConstQualified()) { | |||
12283 | Diag(VDecl->getLocation(), diag::err_in_class_initializer_non_const) | |||
12284 | << Init->getSourceRange(); | |||
12285 | VDecl->setInvalidDecl(); | |||
12286 | ||||
12287 | // We allow integer constant expressions in all cases. | |||
12288 | } else if (DclT->isIntegralOrEnumerationType()) { | |||
12289 | // Check whether the expression is a constant expression. | |||
12290 | SourceLocation Loc; | |||
12291 | if (getLangOpts().CPlusPlus11 && DclT.isVolatileQualified()) | |||
12292 | // In C++11, a non-constexpr const static data member with an | |||
12293 | // in-class initializer cannot be volatile. | |||
12294 | Diag(VDecl->getLocation(), diag::err_in_class_initializer_volatile); | |||
12295 | else if (Init->isValueDependent()) | |||
12296 | ; // Nothing to check. | |||
12297 | else if (Init->isIntegerConstantExpr(Context, &Loc)) | |||
12298 | ; // Ok, it's an ICE! | |||
12299 | else if (Init->getType()->isScopedEnumeralType() && | |||
12300 | Init->isCXX11ConstantExpr(Context)) | |||
12301 | ; // Ok, it is a scoped-enum constant expression. | |||
12302 | else if (Init->isEvaluatable(Context)) { | |||
12303 | // If we can constant fold the initializer through heroics, accept it, | |||
12304 | // but report this as a use of an extension for -pedantic. | |||
12305 | Diag(Loc, diag::ext_in_class_initializer_non_constant) | |||
12306 | << Init->getSourceRange(); | |||
12307 | } else { | |||
12308 | // Otherwise, this is some crazy unknown case. Report the issue at the | |||
12309 | // location provided by the isIntegerConstantExpr failed check. | |||
12310 | Diag(Loc, diag::err_in_class_initializer_non_constant) | |||
12311 | << Init->getSourceRange(); | |||
12312 | VDecl->setInvalidDecl(); | |||
12313 | } | |||
12314 | ||||
12315 | // We allow foldable floating-point constants as an extension. | |||
12316 | } else if (DclT->isFloatingType()) { // also permits complex, which is ok | |||
12317 | // In C++98, this is a GNU extension. In C++11, it is not, but we support | |||
12318 | // it anyway and provide a fixit to add the 'constexpr'. | |||
12319 | if (getLangOpts().CPlusPlus11) { | |||
12320 | Diag(VDecl->getLocation(), | |||
12321 | diag::ext_in_class_initializer_float_type_cxx11) | |||
12322 | << DclT << Init->getSourceRange(); | |||
12323 | Diag(VDecl->getBeginLoc(), | |||
12324 | diag::note_in_class_initializer_float_type_cxx11) | |||
12325 | << FixItHint::CreateInsertion(VDecl->getBeginLoc(), "constexpr "); | |||
12326 | } else { | |||
12327 | Diag(VDecl->getLocation(), diag::ext_in_class_initializer_float_type) | |||
12328 | << DclT << Init->getSourceRange(); | |||
12329 | ||||
12330 | if (!Init->isValueDependent() && !Init->isEvaluatable(Context)) { | |||
12331 | Diag(Init->getExprLoc(), diag::err_in_class_initializer_non_constant) | |||
12332 | << Init->getSourceRange(); | |||
12333 | VDecl->setInvalidDecl(); | |||
12334 | } | |||
12335 | } | |||
12336 | ||||
12337 | // Suggest adding 'constexpr' in C++11 for literal types. | |||
12338 | } else if (getLangOpts().CPlusPlus11 && DclT->isLiteralType(Context)) { | |||
12339 | Diag(VDecl->getLocation(), diag::err_in_class_initializer_literal_type) | |||
12340 | << DclT << Init->getSourceRange() | |||
12341 | << FixItHint::CreateInsertion(VDecl->getBeginLoc(), "constexpr "); | |||
12342 | VDecl->setConstexpr(true); | |||
12343 | ||||
12344 | } else { | |||
12345 | Diag(VDecl->getLocation(), diag::err_in_class_initializer_bad_type) | |||
12346 | << DclT << Init->getSourceRange(); | |||
12347 | VDecl->setInvalidDecl(); | |||
12348 | } | |||
12349 | } else if (VDecl->isFileVarDecl()) { | |||
12350 | // In C, extern is typically used to avoid tentative definitions when | |||
12351 | // declaring variables in headers, but adding an intializer makes it a | |||
12352 | // definition. This is somewhat confusing, so GCC and Clang both warn on it. | |||
12353 | // In C++, extern is often used to give implictly static const variables | |||
12354 | // external linkage, so don't warn in that case. If selectany is present, | |||
12355 | // this might be header code intended for C and C++ inclusion, so apply the | |||
12356 | // C++ rules. | |||
12357 | if (VDecl->getStorageClass() == SC_Extern && | |||
12358 | ((!getLangOpts().CPlusPlus && !VDecl->hasAttr<SelectAnyAttr>()) || | |||
12359 | !Context.getBaseElementType(VDecl->getType()).isConstQualified()) && | |||
12360 | !(getLangOpts().CPlusPlus && VDecl->isExternC()) && | |||
12361 | !isTemplateInstantiation(VDecl->getTemplateSpecializationKind())) | |||
12362 | Diag(VDecl->getLocation(), diag::warn_extern_init); | |||
12363 | ||||
12364 | // In Microsoft C++ mode, a const variable defined in namespace scope has | |||
12365 | // external linkage by default if the variable is declared with | |||
12366 | // __declspec(dllexport). | |||
12367 | if (Context.getTargetInfo().getCXXABI().isMicrosoft() && | |||
12368 | getLangOpts().CPlusPlus && VDecl->getType().isConstQualified() && | |||
12369 | VDecl->hasAttr<DLLExportAttr>() && VDecl->getDefinition()) | |||
12370 | VDecl->setStorageClass(SC_Extern); | |||
12371 | ||||
12372 | // C99 6.7.8p4. All file scoped initializers need to be constant. | |||
12373 | if (!getLangOpts().CPlusPlus && !VDecl->isInvalidDecl()) | |||
12374 | CheckForConstantInitializer(Init, DclT); | |||
12375 | } | |||
12376 | ||||
12377 | QualType InitType = Init->getType(); | |||
12378 | if (!InitType.isNull() && | |||
12379 | (InitType.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || | |||
12380 | InitType.hasNonTrivialToPrimitiveCopyCUnion())) | |||
12381 | checkNonTrivialCUnionInInitializer(Init, Init->getExprLoc()); | |||
12382 | ||||
12383 | // We will represent direct-initialization similarly to copy-initialization: | |||
12384 | // int x(1); -as-> int x = 1; | |||
12385 | // ClassType x(a,b,c); -as-> ClassType x = ClassType(a,b,c); | |||
12386 | // | |||
12387 | // Clients that want to distinguish between the two forms, can check for | |||
12388 | // direct initializer using VarDecl::getInitStyle(). | |||
12389 | // A major benefit is that clients that don't particularly care about which | |||
12390 | // exactly form was it (like the CodeGen) can handle both cases without | |||
12391 | // special case code. | |||
12392 | ||||
12393 | // C++ 8.5p11: | |||
12394 | // The form of initialization (using parentheses or '=') is generally | |||
12395 | // insignificant, but does matter when the entity being initialized has a | |||
12396 | // class type. | |||
12397 | if (CXXDirectInit) { | |||
12398 | assert(DirectInit && "Call-style initializer must be direct init.")((DirectInit && "Call-style initializer must be direct init." ) ? static_cast<void> (0) : __assert_fail ("DirectInit && \"Call-style initializer must be direct init.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 12398, __PRETTY_FUNCTION__)); | |||
12399 | VDecl->setInitStyle(VarDecl::CallInit); | |||
12400 | } else if (DirectInit) { | |||
12401 | // This must be list-initialization. No other way is direct-initialization. | |||
12402 | VDecl->setInitStyle(VarDecl::ListInit); | |||
12403 | } | |||
12404 | ||||
12405 | if (LangOpts.OpenMP && VDecl->isFileVarDecl()) | |||
12406 | DeclsToCheckForDeferredDiags.push_back(VDecl); | |||
12407 | CheckCompleteVariableDeclaration(VDecl); | |||
12408 | } | |||
12409 | ||||
12410 | /// ActOnInitializerError - Given that there was an error parsing an | |||
12411 | /// initializer for the given declaration, try to return to some form | |||
12412 | /// of sanity. | |||
12413 | void Sema::ActOnInitializerError(Decl *D) { | |||
12414 | // Our main concern here is re-establishing invariants like "a | |||
12415 | // variable's type is either dependent or complete". | |||
12416 | if (!D || D->isInvalidDecl()) return; | |||
12417 | ||||
12418 | VarDecl *VD = dyn_cast<VarDecl>(D); | |||
12419 | if (!VD) return; | |||
12420 | ||||
12421 | // Bindings are not usable if we can't make sense of the initializer. | |||
12422 | if (auto *DD = dyn_cast<DecompositionDecl>(D)) | |||
12423 | for (auto *BD : DD->bindings()) | |||
12424 | BD->setInvalidDecl(); | |||
12425 | ||||
12426 | // Auto types are meaningless if we can't make sense of the initializer. | |||
12427 | if (VD->getType()->isUndeducedType()) { | |||
12428 | D->setInvalidDecl(); | |||
12429 | return; | |||
12430 | } | |||
12431 | ||||
12432 | QualType Ty = VD->getType(); | |||
12433 | if (Ty->isDependentType()) return; | |||
12434 | ||||
12435 | // Require a complete type. | |||
12436 | if (RequireCompleteType(VD->getLocation(), | |||
12437 | Context.getBaseElementType(Ty), | |||
12438 | diag::err_typecheck_decl_incomplete_type)) { | |||
12439 | VD->setInvalidDecl(); | |||
12440 | return; | |||
12441 | } | |||
12442 | ||||
12443 | // Require a non-abstract type. | |||
12444 | if (RequireNonAbstractType(VD->getLocation(), Ty, | |||
12445 | diag::err_abstract_type_in_decl, | |||
12446 | AbstractVariableType)) { | |||
12447 | VD->setInvalidDecl(); | |||
12448 | return; | |||
12449 | } | |||
12450 | ||||
12451 | // Don't bother complaining about constructors or destructors, | |||
12452 | // though. | |||
12453 | } | |||
12454 | ||||
12455 | void Sema::ActOnUninitializedDecl(Decl *RealDecl) { | |||
12456 | // If there is no declaration, there was an error parsing it. Just ignore it. | |||
12457 | if (!RealDecl) | |||
12458 | return; | |||
12459 | ||||
12460 | if (VarDecl *Var = dyn_cast<VarDecl>(RealDecl)) { | |||
12461 | QualType Type = Var->getType(); | |||
12462 | ||||
12463 | // C++1z [dcl.dcl]p1 grammar implies that an initializer is mandatory. | |||
12464 | if (isa<DecompositionDecl>(RealDecl)) { | |||
12465 | Diag(Var->getLocation(), diag::err_decomp_decl_requires_init) << Var; | |||
12466 | Var->setInvalidDecl(); | |||
12467 | return; | |||
12468 | } | |||
12469 | ||||
12470 | if (Type->isUndeducedType() && | |||
12471 | DeduceVariableDeclarationType(Var, false, nullptr)) | |||
12472 | return; | |||
12473 | ||||
12474 | // C++11 [class.static.data]p3: A static data member can be declared with | |||
12475 | // the constexpr specifier; if so, its declaration shall specify | |||
12476 | // a brace-or-equal-initializer. | |||
12477 | // C++11 [dcl.constexpr]p1: The constexpr specifier shall be applied only to | |||
12478 | // the definition of a variable [...] or the declaration of a static data | |||
12479 | // member. | |||
12480 | if (Var->isConstexpr() && !Var->isThisDeclarationADefinition() && | |||
12481 | !Var->isThisDeclarationADemotedDefinition()) { | |||
12482 | if (Var->isStaticDataMember()) { | |||
12483 | // C++1z removes the relevant rule; the in-class declaration is always | |||
12484 | // a definition there. | |||
12485 | if (!getLangOpts().CPlusPlus17 && | |||
12486 | !Context.getTargetInfo().getCXXABI().isMicrosoft()) { | |||
12487 | Diag(Var->getLocation(), | |||
12488 | diag::err_constexpr_static_mem_var_requires_init) | |||
12489 | << Var; | |||
12490 | Var->setInvalidDecl(); | |||
12491 | return; | |||
12492 | } | |||
12493 | } else { | |||
12494 | Diag(Var->getLocation(), diag::err_invalid_constexpr_var_decl); | |||
12495 | Var->setInvalidDecl(); | |||
12496 | return; | |||
12497 | } | |||
12498 | } | |||
12499 | ||||
12500 | // OpenCL v1.1 s6.5.3: variables declared in the constant address space must | |||
12501 | // be initialized. | |||
12502 | if (!Var->isInvalidDecl() && | |||
12503 | Var->getType().getAddressSpace() == LangAS::opencl_constant && | |||
12504 | Var->getStorageClass() != SC_Extern && !Var->getInit()) { | |||
12505 | Diag(Var->getLocation(), diag::err_opencl_constant_no_init); | |||
12506 | Var->setInvalidDecl(); | |||
12507 | return; | |||
12508 | } | |||
12509 | ||||
12510 | if (!Var->isInvalidDecl() && RealDecl->hasAttr<LoaderUninitializedAttr>()) { | |||
12511 | if (Var->getStorageClass() == SC_Extern) { | |||
12512 | Diag(Var->getLocation(), diag::err_loader_uninitialized_extern_decl) | |||
12513 | << Var; | |||
12514 | Var->setInvalidDecl(); | |||
12515 | return; | |||
12516 | } | |||
12517 | if (RequireCompleteType(Var->getLocation(), Var->getType(), | |||
12518 | diag::err_typecheck_decl_incomplete_type)) { | |||
12519 | Var->setInvalidDecl(); | |||
12520 | return; | |||
12521 | } | |||
12522 | if (CXXRecordDecl *RD = Var->getType()->getAsCXXRecordDecl()) { | |||
12523 | if (!RD->hasTrivialDefaultConstructor()) { | |||
12524 | Diag(Var->getLocation(), diag::err_loader_uninitialized_trivial_ctor); | |||
12525 | Var->setInvalidDecl(); | |||
12526 | return; | |||
12527 | } | |||
12528 | } | |||
12529 | } | |||
12530 | ||||
12531 | VarDecl::DefinitionKind DefKind = Var->isThisDeclarationADefinition(); | |||
12532 | if (!Var->isInvalidDecl() && DefKind != VarDecl::DeclarationOnly && | |||
12533 | Var->getType().hasNonTrivialToPrimitiveDefaultInitializeCUnion()) | |||
12534 | checkNonTrivialCUnion(Var->getType(), Var->getLocation(), | |||
12535 | NTCUC_DefaultInitializedObject, NTCUK_Init); | |||
12536 | ||||
12537 | ||||
12538 | switch (DefKind) { | |||
12539 | case VarDecl::Definition: | |||
12540 | if (!Var->isStaticDataMember() || !Var->getAnyInitializer()) | |||
12541 | break; | |||
12542 | ||||
12543 | // We have an out-of-line definition of a static data member | |||
12544 | // that has an in-class initializer, so we type-check this like | |||
12545 | // a declaration. | |||
12546 | // | |||
12547 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | |||
12548 | ||||
12549 | case VarDecl::DeclarationOnly: | |||
12550 | // It's only a declaration. | |||
12551 | ||||
12552 | // Block scope. C99 6.7p7: If an identifier for an object is | |||
12553 | // declared with no linkage (C99 6.2.2p6), the type for the | |||
12554 | // object shall be complete. | |||
12555 | if (!Type->isDependentType() && Var->isLocalVarDecl() && | |||
12556 | !Var->hasLinkage() && !Var->isInvalidDecl() && | |||
12557 | RequireCompleteType(Var->getLocation(), Type, | |||
12558 | diag::err_typecheck_decl_incomplete_type)) | |||
12559 | Var->setInvalidDecl(); | |||
12560 | ||||
12561 | // Make sure that the type is not abstract. | |||
12562 | if (!Type->isDependentType() && !Var->isInvalidDecl() && | |||
12563 | RequireNonAbstractType(Var->getLocation(), Type, | |||
12564 | diag::err_abstract_type_in_decl, | |||
12565 | AbstractVariableType)) | |||
12566 | Var->setInvalidDecl(); | |||
12567 | if (!Type->isDependentType() && !Var->isInvalidDecl() && | |||
12568 | Var->getStorageClass() == SC_PrivateExtern) { | |||
12569 | Diag(Var->getLocation(), diag::warn_private_extern); | |||
12570 | Diag(Var->getLocation(), diag::note_private_extern); | |||
12571 | } | |||
12572 | ||||
12573 | if (Context.getTargetInfo().allowDebugInfoForExternalVar() && | |||
12574 | !Var->isInvalidDecl() && !getLangOpts().CPlusPlus) | |||
12575 | ExternalDeclarations.push_back(Var); | |||
12576 | ||||
12577 | return; | |||
12578 | ||||
12579 | case VarDecl::TentativeDefinition: | |||
12580 | // File scope. C99 6.9.2p2: A declaration of an identifier for an | |||
12581 | // object that has file scope without an initializer, and without a | |||
12582 | // storage-class specifier or with the storage-class specifier "static", | |||
12583 | // constitutes a tentative definition. Note: A tentative definition with | |||
12584 | // external linkage is valid (C99 6.2.2p5). | |||
12585 | if (!Var->isInvalidDecl()) { | |||
12586 | if (const IncompleteArrayType *ArrayT | |||
12587 | = Context.getAsIncompleteArrayType(Type)) { | |||
12588 | if (RequireCompleteSizedType( | |||
12589 | Var->getLocation(), ArrayT->getElementType(), | |||
12590 | diag::err_array_incomplete_or_sizeless_type)) | |||
12591 | Var->setInvalidDecl(); | |||
12592 | } else if (Var->getStorageClass() == SC_Static) { | |||
12593 | // C99 6.9.2p3: If the declaration of an identifier for an object is | |||
12594 | // a tentative definition and has internal linkage (C99 6.2.2p3), the | |||
12595 | // declared type shall not be an incomplete type. | |||
12596 | // NOTE: code such as the following | |||
12597 | // static struct s; | |||
12598 | // struct s { int a; }; | |||
12599 | // is accepted by gcc. Hence here we issue a warning instead of | |||
12600 | // an error and we do not invalidate the static declaration. | |||
12601 | // NOTE: to avoid multiple warnings, only check the first declaration. | |||
12602 | if (Var->isFirstDecl()) | |||
12603 | RequireCompleteType(Var->getLocation(), Type, | |||
12604 | diag::ext_typecheck_decl_incomplete_type); | |||
12605 | } | |||
12606 | } | |||
12607 | ||||
12608 | // Record the tentative definition; we're done. | |||
12609 | if (!Var->isInvalidDecl()) | |||
12610 | TentativeDefinitions.push_back(Var); | |||
12611 | return; | |||
12612 | } | |||
12613 | ||||
12614 | // Provide a specific diagnostic for uninitialized variable | |||
12615 | // definitions with incomplete array type. | |||
12616 | if (Type->isIncompleteArrayType()) { | |||
12617 | Diag(Var->getLocation(), | |||
12618 | diag::err_typecheck_incomplete_array_needs_initializer); | |||
12619 | Var->setInvalidDecl(); | |||
12620 | return; | |||
12621 | } | |||
12622 | ||||
12623 | // Provide a specific diagnostic for uninitialized variable | |||
12624 | // definitions with reference type. | |||
12625 | if (Type->isReferenceType()) { | |||
12626 | Diag(Var->getLocation(), diag::err_reference_var_requires_init) | |||
12627 | << Var << SourceRange(Var->getLocation(), Var->getLocation()); | |||
12628 | Var->setInvalidDecl(); | |||
12629 | return; | |||
12630 | } | |||
12631 | ||||
12632 | // Do not attempt to type-check the default initializer for a | |||
12633 | // variable with dependent type. | |||
12634 | if (Type->isDependentType()) | |||
12635 | return; | |||
12636 | ||||
12637 | if (Var->isInvalidDecl()) | |||
12638 | return; | |||
12639 | ||||
12640 | if (!Var->hasAttr<AliasAttr>()) { | |||
12641 | if (RequireCompleteType(Var->getLocation(), | |||
12642 | Context.getBaseElementType(Type), | |||
12643 | diag::err_typecheck_decl_incomplete_type)) { | |||
12644 | Var->setInvalidDecl(); | |||
12645 | return; | |||
12646 | } | |||
12647 | } else { | |||
12648 | return; | |||
12649 | } | |||
12650 | ||||
12651 | // The variable can not have an abstract class type. | |||
12652 | if (RequireNonAbstractType(Var->getLocation(), Type, | |||
12653 | diag::err_abstract_type_in_decl, | |||
12654 | AbstractVariableType)) { | |||
12655 | Var->setInvalidDecl(); | |||
12656 | return; | |||
12657 | } | |||
12658 | ||||
12659 | // Check for jumps past the implicit initializer. C++0x | |||
12660 | // clarifies that this applies to a "variable with automatic | |||
12661 | // storage duration", not a "local variable". | |||
12662 | // C++11 [stmt.dcl]p3 | |||
12663 | // A program that jumps from a point where a variable with automatic | |||
12664 | // storage duration is not in scope to a point where it is in scope is | |||
12665 | // ill-formed unless the variable has scalar type, class type with a | |||
12666 | // trivial default constructor and a trivial destructor, a cv-qualified | |||
12667 | // version of one of these types, or an array of one of the preceding | |||
12668 | // types and is declared without an initializer. | |||
12669 | if (getLangOpts().CPlusPlus && Var->hasLocalStorage()) { | |||
12670 | if (const RecordType *Record | |||
12671 | = Context.getBaseElementType(Type)->getAs<RecordType>()) { | |||
12672 | CXXRecordDecl *CXXRecord = cast<CXXRecordDecl>(Record->getDecl()); | |||
12673 | // Mark the function (if we're in one) for further checking even if the | |||
12674 | // looser rules of C++11 do not require such checks, so that we can | |||
12675 | // diagnose incompatibilities with C++98. | |||
12676 | if (!CXXRecord->isPOD()) | |||
12677 | setFunctionHasBranchProtectedScope(); | |||
12678 | } | |||
12679 | } | |||
12680 | // In OpenCL, we can't initialize objects in the __local address space, | |||
12681 | // even implicitly, so don't synthesize an implicit initializer. | |||
12682 | if (getLangOpts().OpenCL && | |||
12683 | Var->getType().getAddressSpace() == LangAS::opencl_local) | |||
12684 | return; | |||
12685 | // C++03 [dcl.init]p9: | |||
12686 | // If no initializer is specified for an object, and the | |||
12687 | // object is of (possibly cv-qualified) non-POD class type (or | |||
12688 | // array thereof), the object shall be default-initialized; if | |||
12689 | // the object is of const-qualified type, the underlying class | |||
12690 | // type shall have a user-declared default | |||
12691 | // constructor. Otherwise, if no initializer is specified for | |||
12692 | // a non- static object, the object and its subobjects, if | |||
12693 | // any, have an indeterminate initial value); if the object | |||
12694 | // or any of its subobjects are of const-qualified type, the | |||
12695 | // program is ill-formed. | |||
12696 | // C++0x [dcl.init]p11: | |||
12697 | // If no initializer is specified for an object, the object is | |||
12698 | // default-initialized; [...]. | |||
12699 | InitializedEntity Entity = InitializedEntity::InitializeVariable(Var); | |||
12700 | InitializationKind Kind | |||
12701 | = InitializationKind::CreateDefault(Var->getLocation()); | |||
12702 | ||||
12703 | InitializationSequence InitSeq(*this, Entity, Kind, None); | |||
12704 | ExprResult Init = InitSeq.Perform(*this, Entity, Kind, None); | |||
12705 | ||||
12706 | if (Init.get()) { | |||
12707 | Var->setInit(MaybeCreateExprWithCleanups(Init.get())); | |||
12708 | // This is important for template substitution. | |||
12709 | Var->setInitStyle(VarDecl::CallInit); | |||
12710 | } else if (Init.isInvalid()) { | |||
12711 | // If default-init fails, attach a recovery-expr initializer to track | |||
12712 | // that initialization was attempted and failed. | |||
12713 | auto RecoveryExpr = | |||
12714 | CreateRecoveryExpr(Var->getLocation(), Var->getLocation(), {}); | |||
12715 | if (RecoveryExpr.get()) | |||
12716 | Var->setInit(RecoveryExpr.get()); | |||
12717 | } | |||
12718 | ||||
12719 | CheckCompleteVariableDeclaration(Var); | |||
12720 | } | |||
12721 | } | |||
12722 | ||||
12723 | void Sema::ActOnCXXForRangeDecl(Decl *D) { | |||
12724 | // If there is no declaration, there was an error parsing it. Ignore it. | |||
12725 | if (!D) | |||
12726 | return; | |||
12727 | ||||
12728 | VarDecl *VD = dyn_cast<VarDecl>(D); | |||
12729 | if (!VD) { | |||
12730 | Diag(D->getLocation(), diag::err_for_range_decl_must_be_var); | |||
12731 | D->setInvalidDecl(); | |||
12732 | return; | |||
12733 | } | |||
12734 | ||||
12735 | VD->setCXXForRangeDecl(true); | |||
12736 | ||||
12737 | // for-range-declaration cannot be given a storage class specifier. | |||
12738 | int Error = -1; | |||
12739 | switch (VD->getStorageClass()) { | |||
12740 | case SC_None: | |||
12741 | break; | |||
12742 | case SC_Extern: | |||
12743 | Error = 0; | |||
12744 | break; | |||
12745 | case SC_Static: | |||
12746 | Error = 1; | |||
12747 | break; | |||
12748 | case SC_PrivateExtern: | |||
12749 | Error = 2; | |||
12750 | break; | |||
12751 | case SC_Auto: | |||
12752 | Error = 3; | |||
12753 | break; | |||
12754 | case SC_Register: | |||
12755 | Error = 4; | |||
12756 | break; | |||
12757 | } | |||
12758 | if (Error != -1) { | |||
12759 | Diag(VD->getOuterLocStart(), diag::err_for_range_storage_class) | |||
12760 | << VD << Error; | |||
12761 | D->setInvalidDecl(); | |||
12762 | } | |||
12763 | } | |||
12764 | ||||
12765 | StmtResult | |||
12766 | Sema::ActOnCXXForRangeIdentifier(Scope *S, SourceLocation IdentLoc, | |||
12767 | IdentifierInfo *Ident, | |||
12768 | ParsedAttributes &Attrs, | |||
12769 | SourceLocation AttrEnd) { | |||
12770 | // C++1y [stmt.iter]p1: | |||
12771 | // A range-based for statement of the form | |||
12772 | // for ( for-range-identifier : for-range-initializer ) statement | |||
12773 | // is equivalent to | |||
12774 | // for ( auto&& for-range-identifier : for-range-initializer ) statement | |||
12775 | DeclSpec DS(Attrs.getPool().getFactory()); | |||
12776 | ||||
12777 | const char *PrevSpec; | |||
12778 | unsigned DiagID; | |||
12779 | DS.SetTypeSpecType(DeclSpec::TST_auto, IdentLoc, PrevSpec, DiagID, | |||
12780 | getPrintingPolicy()); | |||
12781 | ||||
12782 | Declarator D(DS, DeclaratorContext::ForInit); | |||
12783 | D.SetIdentifier(Ident, IdentLoc); | |||
12784 | D.takeAttributes(Attrs, AttrEnd); | |||
12785 | ||||
12786 | D.AddTypeInfo(DeclaratorChunk::getReference(0, IdentLoc, /*lvalue*/ false), | |||
12787 | IdentLoc); | |||
12788 | Decl *Var = ActOnDeclarator(S, D); | |||
12789 | cast<VarDecl>(Var)->setCXXForRangeDecl(true); | |||
12790 | FinalizeDeclaration(Var); | |||
12791 | return ActOnDeclStmt(FinalizeDeclaratorGroup(S, DS, Var), IdentLoc, | |||
12792 | AttrEnd.isValid() ? AttrEnd : IdentLoc); | |||
12793 | } | |||
12794 | ||||
12795 | void Sema::CheckCompleteVariableDeclaration(VarDecl *var) { | |||
12796 | if (var->isInvalidDecl()) return; | |||
12797 | ||||
12798 | if (getLangOpts().OpenCL) { | |||
12799 | // OpenCL v2.0 s6.12.5 - Every block variable declaration must have an | |||
12800 | // initialiser | |||
12801 | if (var->getTypeSourceInfo()->getType()->isBlockPointerType() && | |||
12802 | !var->hasInit()) { | |||
12803 | Diag(var->getLocation(), diag::err_opencl_invalid_block_declaration) | |||
12804 | << 1 /*Init*/; | |||
12805 | var->setInvalidDecl(); | |||
12806 | return; | |||
12807 | } | |||
12808 | } | |||
12809 | ||||
12810 | // In Objective-C, don't allow jumps past the implicit initialization of a | |||
12811 | // local retaining variable. | |||
12812 | if (getLangOpts().ObjC && | |||
12813 | var->hasLocalStorage()) { | |||
12814 | switch (var->getType().getObjCLifetime()) { | |||
12815 | case Qualifiers::OCL_None: | |||
12816 | case Qualifiers::OCL_ExplicitNone: | |||
12817 | case Qualifiers::OCL_Autoreleasing: | |||
12818 | break; | |||
12819 | ||||
12820 | case Qualifiers::OCL_Weak: | |||
12821 | case Qualifiers::OCL_Strong: | |||
12822 | setFunctionHasBranchProtectedScope(); | |||
12823 | break; | |||
12824 | } | |||
12825 | } | |||
12826 | ||||
12827 | if (var->hasLocalStorage() && | |||
12828 | var->getType().isDestructedType() == QualType::DK_nontrivial_c_struct) | |||
12829 | setFunctionHasBranchProtectedScope(); | |||
12830 | ||||
12831 | // Warn about externally-visible variables being defined without a | |||
12832 | // prior declaration. We only want to do this for global | |||
12833 | // declarations, but we also specifically need to avoid doing it for | |||
12834 | // class members because the linkage of an anonymous class can | |||
12835 | // change if it's later given a typedef name. | |||
12836 | if (var->isThisDeclarationADefinition() && | |||
12837 | var->getDeclContext()->getRedeclContext()->isFileContext() && | |||
12838 | var->isExternallyVisible() && var->hasLinkage() && | |||
12839 | !var->isInline() && !var->getDescribedVarTemplate() && | |||
12840 | !isa<VarTemplatePartialSpecializationDecl>(var) && | |||
12841 | !isTemplateInstantiation(var->getTemplateSpecializationKind()) && | |||
12842 | !getDiagnostics().isIgnored(diag::warn_missing_variable_declarations, | |||
12843 | var->getLocation())) { | |||
12844 | // Find a previous declaration that's not a definition. | |||
12845 | VarDecl *prev = var->getPreviousDecl(); | |||
12846 | while (prev && prev->isThisDeclarationADefinition()) | |||
12847 | prev = prev->getPreviousDecl(); | |||
12848 | ||||
12849 | if (!prev) { | |||
12850 | Diag(var->getLocation(), diag::warn_missing_variable_declarations) << var; | |||
12851 | Diag(var->getTypeSpecStartLoc(), diag::note_static_for_internal_linkage) | |||
12852 | << /* variable */ 0; | |||
12853 | } | |||
12854 | } | |||
12855 | ||||
12856 | // Cache the result of checking for constant initialization. | |||
12857 | Optional<bool> CacheHasConstInit; | |||
12858 | const Expr *CacheCulprit = nullptr; | |||
12859 | auto checkConstInit = [&]() mutable { | |||
12860 | if (!CacheHasConstInit) | |||
12861 | CacheHasConstInit = var->getInit()->isConstantInitializer( | |||
12862 | Context, var->getType()->isReferenceType(), &CacheCulprit); | |||
12863 | return *CacheHasConstInit; | |||
12864 | }; | |||
12865 | ||||
12866 | if (var->getTLSKind() == VarDecl::TLS_Static) { | |||
12867 | if (var->getType().isDestructedType()) { | |||
12868 | // GNU C++98 edits for __thread, [basic.start.term]p3: | |||
12869 | // The type of an object with thread storage duration shall not | |||
12870 | // have a non-trivial destructor. | |||
12871 | Diag(var->getLocation(), diag::err_thread_nontrivial_dtor); | |||
12872 | if (getLangOpts().CPlusPlus11) | |||
12873 | Diag(var->getLocation(), diag::note_use_thread_local); | |||
12874 | } else if (getLangOpts().CPlusPlus && var->hasInit()) { | |||
12875 | if (!checkConstInit()) { | |||
12876 | // GNU C++98 edits for __thread, [basic.start.init]p4: | |||
12877 | // An object of thread storage duration shall not require dynamic | |||
12878 | // initialization. | |||
12879 | // FIXME: Need strict checking here. | |||
12880 | Diag(CacheCulprit->getExprLoc(), diag::err_thread_dynamic_init) | |||
12881 | << CacheCulprit->getSourceRange(); | |||
12882 | if (getLangOpts().CPlusPlus11) | |||
12883 | Diag(var->getLocation(), diag::note_use_thread_local); | |||
12884 | } | |||
12885 | } | |||
12886 | } | |||
12887 | ||||
12888 | // Apply section attributes and pragmas to global variables. | |||
12889 | bool GlobalStorage = var->hasGlobalStorage(); | |||
12890 | if (GlobalStorage && var->isThisDeclarationADefinition() && | |||
12891 | !inTemplateInstantiation()) { | |||
12892 | PragmaStack<StringLiteral *> *Stack = nullptr; | |||
12893 | int SectionFlags = ASTContext::PSF_Read; | |||
12894 | if (var->getType().isConstQualified()) | |||
12895 | Stack = &ConstSegStack; | |||
12896 | else if (!var->getInit()) { | |||
12897 | Stack = &BSSSegStack; | |||
12898 | SectionFlags |= ASTContext::PSF_Write; | |||
12899 | } else { | |||
12900 | Stack = &DataSegStack; | |||
12901 | SectionFlags |= ASTContext::PSF_Write; | |||
12902 | } | |||
12903 | if (const SectionAttr *SA = var->getAttr<SectionAttr>()) { | |||
12904 | if (SA->getSyntax() == AttributeCommonInfo::AS_Declspec) | |||
12905 | SectionFlags |= ASTContext::PSF_Implicit; | |||
12906 | UnifySection(SA->getName(), SectionFlags, var); | |||
12907 | } else if (Stack->CurrentValue) { | |||
12908 | SectionFlags |= ASTContext::PSF_Implicit; | |||
12909 | auto SectionName = Stack->CurrentValue->getString(); | |||
12910 | var->addAttr(SectionAttr::CreateImplicit( | |||
12911 | Context, SectionName, Stack->CurrentPragmaLocation, | |||
12912 | AttributeCommonInfo::AS_Pragma, SectionAttr::Declspec_allocate)); | |||
12913 | if (UnifySection(SectionName, SectionFlags, var)) | |||
12914 | var->dropAttr<SectionAttr>(); | |||
12915 | } | |||
12916 | ||||
12917 | // Apply the init_seg attribute if this has an initializer. If the | |||
12918 | // initializer turns out to not be dynamic, we'll end up ignoring this | |||
12919 | // attribute. | |||
12920 | if (CurInitSeg && var->getInit()) | |||
12921 | var->addAttr(InitSegAttr::CreateImplicit(Context, CurInitSeg->getString(), | |||
12922 | CurInitSegLoc, | |||
12923 | AttributeCommonInfo::AS_Pragma)); | |||
12924 | } | |||
12925 | ||||
12926 | if (!var->getType()->isStructureType() && var->hasInit() && | |||
12927 | isa<InitListExpr>(var->getInit())) { | |||
12928 | const auto *ILE = cast<InitListExpr>(var->getInit()); | |||
12929 | unsigned NumInits = ILE->getNumInits(); | |||
12930 | if (NumInits > 2) | |||
12931 | for (unsigned I = 0; I < NumInits; ++I) { | |||
12932 | const auto *Init = ILE->getInit(I); | |||
12933 | if (!Init) | |||
12934 | break; | |||
12935 | const auto *SL = dyn_cast<StringLiteral>(Init->IgnoreImpCasts()); | |||
12936 | if (!SL) | |||
12937 | break; | |||
12938 | ||||
12939 | unsigned NumConcat = SL->getNumConcatenated(); | |||
12940 | // Diagnose missing comma in string array initialization. | |||
12941 | // Do not warn when all the elements in the initializer are concatenated | |||
12942 | // together. Do not warn for macros too. | |||
12943 | if (NumConcat == 2 && !SL->getBeginLoc().isMacroID()) { | |||
12944 | bool OnlyOneMissingComma = true; | |||
12945 | for (unsigned J = I + 1; J < NumInits; ++J) { | |||
12946 | const auto *Init = ILE->getInit(J); | |||
12947 | if (!Init) | |||
12948 | break; | |||
12949 | const auto *SLJ = dyn_cast<StringLiteral>(Init->IgnoreImpCasts()); | |||
12950 | if (!SLJ || SLJ->getNumConcatenated() > 1) { | |||
12951 | OnlyOneMissingComma = false; | |||
12952 | break; | |||
12953 | } | |||
12954 | } | |||
12955 | ||||
12956 | if (OnlyOneMissingComma) { | |||
12957 | SmallVector<FixItHint, 1> Hints; | |||
12958 | for (unsigned i = 0; i < NumConcat - 1; ++i) | |||
12959 | Hints.push_back(FixItHint::CreateInsertion( | |||
12960 | PP.getLocForEndOfToken(SL->getStrTokenLoc(i)), ",")); | |||
12961 | ||||
12962 | Diag(SL->getStrTokenLoc(1), | |||
12963 | diag::warn_concatenated_literal_array_init) | |||
12964 | << Hints; | |||
12965 | Diag(SL->getBeginLoc(), | |||
12966 | diag::note_concatenated_string_literal_silence); | |||
12967 | } | |||
12968 | // In any case, stop now. | |||
12969 | break; | |||
12970 | } | |||
12971 | } | |||
12972 | } | |||
12973 | ||||
12974 | // All the following checks are C++ only. | |||
12975 | if (!getLangOpts().CPlusPlus) { | |||
12976 | // If this variable must be emitted, add it as an initializer for the | |||
12977 | // current module. | |||
12978 | if (Context.DeclMustBeEmitted(var) && !ModuleScopes.empty()) | |||
12979 | Context.addModuleInitializer(ModuleScopes.back().Module, var); | |||
12980 | return; | |||
12981 | } | |||
12982 | ||||
12983 | QualType type = var->getType(); | |||
12984 | ||||
12985 | if (var->hasAttr<BlocksAttr>()) | |||
12986 | getCurFunction()->addByrefBlockVar(var); | |||
12987 | ||||
12988 | Expr *Init = var->getInit(); | |||
12989 | bool IsGlobal = GlobalStorage && !var->isStaticLocal(); | |||
12990 | QualType baseType = Context.getBaseElementType(type); | |||
12991 | ||||
12992 | // Check whether the initializer is sufficiently constant. | |||
12993 | if (!type->isDependentType() && Init && !Init->isValueDependent() && | |||
12994 | (GlobalStorage || var->isConstexpr() || | |||
12995 | var->mightBeUsableInConstantExpressions(Context))) { | |||
12996 | // If this variable might have a constant initializer or might be usable in | |||
12997 | // constant expressions, check whether or not it actually is now. We can't | |||
12998 | // do this lazily, because the result might depend on things that change | |||
12999 | // later, such as which constexpr functions happen to be defined. | |||
13000 | SmallVector<PartialDiagnosticAt, 8> Notes; | |||
13001 | bool HasConstInit; | |||
13002 | if (!getLangOpts().CPlusPlus11) { | |||
13003 | // Prior to C++11, in contexts where a constant initializer is required, | |||
13004 | // the set of valid constant initializers is described by syntactic rules | |||
13005 | // in [expr.const]p2-6. | |||
13006 | // FIXME: Stricter checking for these rules would be useful for constinit / | |||
13007 | // -Wglobal-constructors. | |||
13008 | HasConstInit = checkConstInit(); | |||
13009 | ||||
13010 | // Compute and cache the constant value, and remember that we have a | |||
13011 | // constant initializer. | |||
13012 | if (HasConstInit) { | |||
13013 | (void)var->checkForConstantInitialization(Notes); | |||
13014 | Notes.clear(); | |||
13015 | } else if (CacheCulprit) { | |||
13016 | Notes.emplace_back(CacheCulprit->getExprLoc(), | |||
13017 | PDiag(diag::note_invalid_subexpr_in_const_expr)); | |||
13018 | Notes.back().second << CacheCulprit->getSourceRange(); | |||
13019 | } | |||
13020 | } else { | |||
13021 | // Evaluate the initializer to see if it's a constant initializer. | |||
13022 | HasConstInit = var->checkForConstantInitialization(Notes); | |||
13023 | } | |||
13024 | ||||
13025 | if (HasConstInit) { | |||
13026 | // FIXME: Consider replacing the initializer with a ConstantExpr. | |||
13027 | } else if (var->isConstexpr()) { | |||
13028 | SourceLocation DiagLoc = var->getLocation(); | |||
13029 | // If the note doesn't add any useful information other than a source | |||
13030 | // location, fold it into the primary diagnostic. | |||
13031 | if (Notes.size() == 1 && Notes[0].second.getDiagID() == | |||
13032 | diag::note_invalid_subexpr_in_const_expr) { | |||
13033 | DiagLoc = Notes[0].first; | |||
13034 | Notes.clear(); | |||
13035 | } | |||
13036 | Diag(DiagLoc, diag::err_constexpr_var_requires_const_init) | |||
13037 | << var << Init->getSourceRange(); | |||
13038 | for (unsigned I = 0, N = Notes.size(); I != N; ++I) | |||
13039 | Diag(Notes[I].first, Notes[I].second); | |||
13040 | } else if (GlobalStorage && var->hasAttr<ConstInitAttr>()) { | |||
13041 | auto *Attr = var->getAttr<ConstInitAttr>(); | |||
13042 | Diag(var->getLocation(), diag::err_require_constant_init_failed) | |||
13043 | << Init->getSourceRange(); | |||
13044 | Diag(Attr->getLocation(), diag::note_declared_required_constant_init_here) | |||
13045 | << Attr->getRange() << Attr->isConstinit(); | |||
13046 | for (auto &it : Notes) | |||
13047 | Diag(it.first, it.second); | |||
13048 | } else if (IsGlobal && | |||
13049 | !getDiagnostics().isIgnored(diag::warn_global_constructor, | |||
13050 | var->getLocation())) { | |||
13051 | // Warn about globals which don't have a constant initializer. Don't | |||
13052 | // warn about globals with a non-trivial destructor because we already | |||
13053 | // warned about them. | |||
13054 | CXXRecordDecl *RD = baseType->getAsCXXRecordDecl(); | |||
13055 | if (!(RD && !RD->hasTrivialDestructor())) { | |||
13056 | // checkConstInit() here permits trivial default initialization even in | |||
13057 | // C++11 onwards, where such an initializer is not a constant initializer | |||
13058 | // but nonetheless doesn't require a global constructor. | |||
13059 | if (!checkConstInit()) | |||
13060 | Diag(var->getLocation(), diag::warn_global_constructor) | |||
13061 | << Init->getSourceRange(); | |||
13062 | } | |||
13063 | } | |||
13064 | } | |||
13065 | ||||
13066 | // Require the destructor. | |||
13067 | if (!type->isDependentType()) | |||
13068 | if (const RecordType *recordType = baseType->getAs<RecordType>()) | |||
13069 | FinalizeVarWithDestructor(var, recordType); | |||
13070 | ||||
13071 | // If this variable must be emitted, add it as an initializer for the current | |||
13072 | // module. | |||
13073 | if (Context.DeclMustBeEmitted(var) && !ModuleScopes.empty()) | |||
13074 | Context.addModuleInitializer(ModuleScopes.back().Module, var); | |||
13075 | ||||
13076 | // Build the bindings if this is a structured binding declaration. | |||
13077 | if (auto *DD = dyn_cast<DecompositionDecl>(var)) | |||
13078 | CheckCompleteDecompositionDeclaration(DD); | |||
13079 | } | |||
13080 | ||||
13081 | /// Determines if a variable's alignment is dependent. | |||
13082 | static bool hasDependentAlignment(VarDecl *VD) { | |||
13083 | if (VD->getType()->isDependentType()) | |||
13084 | return true; | |||
13085 | for (auto *I : VD->specific_attrs<AlignedAttr>()) | |||
13086 | if (I->isAlignmentDependent()) | |||
13087 | return true; | |||
13088 | return false; | |||
13089 | } | |||
13090 | ||||
13091 | /// Check if VD needs to be dllexport/dllimport due to being in a | |||
13092 | /// dllexport/import function. | |||
13093 | void Sema::CheckStaticLocalForDllExport(VarDecl *VD) { | |||
13094 | assert(VD->isStaticLocal())((VD->isStaticLocal()) ? static_cast<void> (0) : __assert_fail ("VD->isStaticLocal()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 13094, __PRETTY_FUNCTION__)); | |||
13095 | ||||
13096 | auto *FD = dyn_cast_or_null<FunctionDecl>(VD->getParentFunctionOrMethod()); | |||
13097 | ||||
13098 | // Find outermost function when VD is in lambda function. | |||
13099 | while (FD && !getDLLAttr(FD) && | |||
13100 | !FD->hasAttr<DLLExportStaticLocalAttr>() && | |||
13101 | !FD->hasAttr<DLLImportStaticLocalAttr>()) { | |||
13102 | FD = dyn_cast_or_null<FunctionDecl>(FD->getParentFunctionOrMethod()); | |||
13103 | } | |||
13104 | ||||
13105 | if (!FD) | |||
13106 | return; | |||
13107 | ||||
13108 | // Static locals inherit dll attributes from their function. | |||
13109 | if (Attr *A = getDLLAttr(FD)) { | |||
13110 | auto *NewAttr = cast<InheritableAttr>(A->clone(getASTContext())); | |||
13111 | NewAttr->setInherited(true); | |||
13112 | VD->addAttr(NewAttr); | |||
13113 | } else if (Attr *A = FD->getAttr<DLLExportStaticLocalAttr>()) { | |||
13114 | auto *NewAttr = DLLExportAttr::CreateImplicit(getASTContext(), *A); | |||
13115 | NewAttr->setInherited(true); | |||
13116 | VD->addAttr(NewAttr); | |||
13117 | ||||
13118 | // Export this function to enforce exporting this static variable even | |||
13119 | // if it is not used in this compilation unit. | |||
13120 | if (!FD->hasAttr<DLLExportAttr>()) | |||
13121 | FD->addAttr(NewAttr); | |||
13122 | ||||
13123 | } else if (Attr *A = FD->getAttr<DLLImportStaticLocalAttr>()) { | |||
13124 | auto *NewAttr = DLLImportAttr::CreateImplicit(getASTContext(), *A); | |||
13125 | NewAttr->setInherited(true); | |||
13126 | VD->addAttr(NewAttr); | |||
13127 | } | |||
13128 | } | |||
13129 | ||||
13130 | /// FinalizeDeclaration - called by ParseDeclarationAfterDeclarator to perform | |||
13131 | /// any semantic actions necessary after any initializer has been attached. | |||
13132 | void Sema::FinalizeDeclaration(Decl *ThisDecl) { | |||
13133 | // Note that we are no longer parsing the initializer for this declaration. | |||
13134 | ParsingInitForAutoVars.erase(ThisDecl); | |||
13135 | ||||
13136 | VarDecl *VD = dyn_cast_or_null<VarDecl>(ThisDecl); | |||
13137 | if (!VD) | |||
13138 | return; | |||
13139 | ||||
13140 | // Apply an implicit SectionAttr if '#pragma clang section bss|data|rodata' is active | |||
13141 | if (VD->hasGlobalStorage() && VD->isThisDeclarationADefinition() && | |||
13142 | !inTemplateInstantiation() && !VD->hasAttr<SectionAttr>()) { | |||
13143 | if (PragmaClangBSSSection.Valid) | |||
13144 | VD->addAttr(PragmaClangBSSSectionAttr::CreateImplicit( | |||
13145 | Context, PragmaClangBSSSection.SectionName, | |||
13146 | PragmaClangBSSSection.PragmaLocation, | |||
13147 | AttributeCommonInfo::AS_Pragma)); | |||
13148 | if (PragmaClangDataSection.Valid) | |||
13149 | VD->addAttr(PragmaClangDataSectionAttr::CreateImplicit( | |||
13150 | Context, PragmaClangDataSection.SectionName, | |||
13151 | PragmaClangDataSection.PragmaLocation, | |||
13152 | AttributeCommonInfo::AS_Pragma)); | |||
13153 | if (PragmaClangRodataSection.Valid) | |||
13154 | VD->addAttr(PragmaClangRodataSectionAttr::CreateImplicit( | |||
13155 | Context, PragmaClangRodataSection.SectionName, | |||
13156 | PragmaClangRodataSection.PragmaLocation, | |||
13157 | AttributeCommonInfo::AS_Pragma)); | |||
13158 | if (PragmaClangRelroSection.Valid) | |||
13159 | VD->addAttr(PragmaClangRelroSectionAttr::CreateImplicit( | |||
13160 | Context, PragmaClangRelroSection.SectionName, | |||
13161 | PragmaClangRelroSection.PragmaLocation, | |||
13162 | AttributeCommonInfo::AS_Pragma)); | |||
13163 | } | |||
13164 | ||||
13165 | if (auto *DD = dyn_cast<DecompositionDecl>(ThisDecl)) { | |||
13166 | for (auto *BD : DD->bindings()) { | |||
13167 | FinalizeDeclaration(BD); | |||
13168 | } | |||
13169 | } | |||
13170 | ||||
13171 | checkAttributesAfterMerging(*this, *VD); | |||
13172 | ||||
13173 | // Perform TLS alignment check here after attributes attached to the variable | |||
13174 | // which may affect the alignment have been processed. Only perform the check | |||
13175 | // if the target has a maximum TLS alignment (zero means no constraints). | |||
13176 | if (unsigned MaxAlign = Context.getTargetInfo().getMaxTLSAlign()) { | |||
13177 | // Protect the check so that it's not performed on dependent types and | |||
13178 | // dependent alignments (we can't determine the alignment in that case). | |||
13179 | if (VD->getTLSKind() && !hasDependentAlignment(VD) && | |||
13180 | !VD->isInvalidDecl()) { | |||
13181 | CharUnits MaxAlignChars = Context.toCharUnitsFromBits(MaxAlign); | |||
13182 | if (Context.getDeclAlign(VD) > MaxAlignChars) { | |||
13183 | Diag(VD->getLocation(), diag::err_tls_var_aligned_over_maximum) | |||
13184 | << (unsigned)Context.getDeclAlign(VD).getQuantity() << VD | |||
13185 | << (unsigned)MaxAlignChars.getQuantity(); | |||
13186 | } | |||
13187 | } | |||
13188 | } | |||
13189 | ||||
13190 | if (VD->isStaticLocal()) | |||
13191 | CheckStaticLocalForDllExport(VD); | |||
13192 | ||||
13193 | // Perform check for initializers of device-side global variables. | |||
13194 | // CUDA allows empty constructors as initializers (see E.2.3.1, CUDA | |||
13195 | // 7.5). We must also apply the same checks to all __shared__ | |||
13196 | // variables whether they are local or not. CUDA also allows | |||
13197 | // constant initializers for __constant__ and __device__ variables. | |||
13198 | if (getLangOpts().CUDA) | |||
13199 | checkAllowedCUDAInitializer(VD); | |||
13200 | ||||
13201 | // Grab the dllimport or dllexport attribute off of the VarDecl. | |||
13202 | const InheritableAttr *DLLAttr = getDLLAttr(VD); | |||
13203 | ||||
13204 | // Imported static data members cannot be defined out-of-line. | |||
13205 | if (const auto *IA = dyn_cast_or_null<DLLImportAttr>(DLLAttr)) { | |||
13206 | if (VD->isStaticDataMember() && VD->isOutOfLine() && | |||
13207 | VD->isThisDeclarationADefinition()) { | |||
13208 | // We allow definitions of dllimport class template static data members | |||
13209 | // with a warning. | |||
13210 | CXXRecordDecl *Context = | |||
13211 | cast<CXXRecordDecl>(VD->getFirstDecl()->getDeclContext()); | |||
13212 | bool IsClassTemplateMember = | |||
13213 | isa<ClassTemplatePartialSpecializationDecl>(Context) || | |||
13214 | Context->getDescribedClassTemplate(); | |||
13215 | ||||
13216 | Diag(VD->getLocation(), | |||
13217 | IsClassTemplateMember | |||
13218 | ? diag::warn_attribute_dllimport_static_field_definition | |||
13219 | : diag::err_attribute_dllimport_static_field_definition); | |||
13220 | Diag(IA->getLocation(), diag::note_attribute); | |||
13221 | if (!IsClassTemplateMember) | |||
13222 | VD->setInvalidDecl(); | |||
13223 | } | |||
13224 | } | |||
13225 | ||||
13226 | // dllimport/dllexport variables cannot be thread local, their TLS index | |||
13227 | // isn't exported with the variable. | |||
13228 | if (DLLAttr && VD->getTLSKind()) { | |||
13229 | auto *F = dyn_cast_or_null<FunctionDecl>(VD->getParentFunctionOrMethod()); | |||
13230 | if (F && getDLLAttr(F)) { | |||
13231 | assert(VD->isStaticLocal())((VD->isStaticLocal()) ? static_cast<void> (0) : __assert_fail ("VD->isStaticLocal()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 13231, __PRETTY_FUNCTION__)); | |||
13232 | // But if this is a static local in a dlimport/dllexport function, the | |||
13233 | // function will never be inlined, which means the var would never be | |||
13234 | // imported, so having it marked import/export is safe. | |||
13235 | } else { | |||
13236 | Diag(VD->getLocation(), diag::err_attribute_dll_thread_local) << VD | |||
13237 | << DLLAttr; | |||
13238 | VD->setInvalidDecl(); | |||
13239 | } | |||
13240 | } | |||
13241 | ||||
13242 | if (UsedAttr *Attr = VD->getAttr<UsedAttr>()) { | |||
13243 | if (!Attr->isInherited() && !VD->isThisDeclarationADefinition()) { | |||
13244 | Diag(Attr->getLocation(), diag::warn_attribute_ignored) << Attr; | |||
13245 | VD->dropAttr<UsedAttr>(); | |||
13246 | } | |||
13247 | } | |||
13248 | ||||
13249 | const DeclContext *DC = VD->getDeclContext(); | |||
13250 | // If there's a #pragma GCC visibility in scope, and this isn't a class | |||
13251 | // member, set the visibility of this variable. | |||
13252 | if (DC->getRedeclContext()->isFileContext() && VD->isExternallyVisible()) | |||
13253 | AddPushedVisibilityAttribute(VD); | |||
13254 | ||||
13255 | // FIXME: Warn on unused var template partial specializations. | |||
13256 | if (VD->isFileVarDecl() && !isa<VarTemplatePartialSpecializationDecl>(VD)) | |||
13257 | MarkUnusedFileScopedDecl(VD); | |||
13258 | ||||
13259 | // Now we have parsed the initializer and can update the table of magic | |||
13260 | // tag values. | |||
13261 | if (!VD->hasAttr<TypeTagForDatatypeAttr>() || | |||
13262 | !VD->getType()->isIntegralOrEnumerationType()) | |||
13263 | return; | |||
13264 | ||||
13265 | for (const auto *I : ThisDecl->specific_attrs<TypeTagForDatatypeAttr>()) { | |||
13266 | const Expr *MagicValueExpr = VD->getInit(); | |||
13267 | if (!MagicValueExpr) { | |||
13268 | continue; | |||
13269 | } | |||
13270 | Optional<llvm::APSInt> MagicValueInt; | |||
13271 | if (!(MagicValueInt = MagicValueExpr->getIntegerConstantExpr(Context))) { | |||
13272 | Diag(I->getRange().getBegin(), | |||
13273 | diag::err_type_tag_for_datatype_not_ice) | |||
13274 | << LangOpts.CPlusPlus << MagicValueExpr->getSourceRange(); | |||
13275 | continue; | |||
13276 | } | |||
13277 | if (MagicValueInt->getActiveBits() > 64) { | |||
13278 | Diag(I->getRange().getBegin(), | |||
13279 | diag::err_type_tag_for_datatype_too_large) | |||
13280 | << LangOpts.CPlusPlus << MagicValueExpr->getSourceRange(); | |||
13281 | continue; | |||
13282 | } | |||
13283 | uint64_t MagicValue = MagicValueInt->getZExtValue(); | |||
13284 | RegisterTypeTagForDatatype(I->getArgumentKind(), | |||
13285 | MagicValue, | |||
13286 | I->getMatchingCType(), | |||
13287 | I->getLayoutCompatible(), | |||
13288 | I->getMustBeNull()); | |||
13289 | } | |||
13290 | } | |||
13291 | ||||
13292 | static bool hasDeducedAuto(DeclaratorDecl *DD) { | |||
13293 | auto *VD = dyn_cast<VarDecl>(DD); | |||
13294 | return VD && !VD->getType()->hasAutoForTrailingReturnType(); | |||
13295 | } | |||
13296 | ||||
13297 | Sema::DeclGroupPtrTy Sema::FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, | |||
13298 | ArrayRef<Decl *> Group) { | |||
13299 | SmallVector<Decl*, 8> Decls; | |||
13300 | ||||
13301 | if (DS.isTypeSpecOwned()) | |||
13302 | Decls.push_back(DS.getRepAsDecl()); | |||
13303 | ||||
13304 | DeclaratorDecl *FirstDeclaratorInGroup = nullptr; | |||
13305 | DecompositionDecl *FirstDecompDeclaratorInGroup = nullptr; | |||
13306 | bool DiagnosedMultipleDecomps = false; | |||
13307 | DeclaratorDecl *FirstNonDeducedAutoInGroup = nullptr; | |||
13308 | bool DiagnosedNonDeducedAuto = false; | |||
13309 | ||||
13310 | for (unsigned i = 0, e = Group.size(); i != e; ++i) { | |||
13311 | if (Decl *D = Group[i]) { | |||
13312 | // For declarators, there are some additional syntactic-ish checks we need | |||
13313 | // to perform. | |||
13314 | if (auto *DD = dyn_cast<DeclaratorDecl>(D)) { | |||
13315 | if (!FirstDeclaratorInGroup) | |||
13316 | FirstDeclaratorInGroup = DD; | |||
13317 | if (!FirstDecompDeclaratorInGroup) | |||
13318 | FirstDecompDeclaratorInGroup = dyn_cast<DecompositionDecl>(D); | |||
13319 | if (!FirstNonDeducedAutoInGroup && DS.hasAutoTypeSpec() && | |||
13320 | !hasDeducedAuto(DD)) | |||
13321 | FirstNonDeducedAutoInGroup = DD; | |||
13322 | ||||
13323 | if (FirstDeclaratorInGroup != DD) { | |||
13324 | // A decomposition declaration cannot be combined with any other | |||
13325 | // declaration in the same group. | |||
13326 | if (FirstDecompDeclaratorInGroup && !DiagnosedMultipleDecomps) { | |||
13327 | Diag(FirstDecompDeclaratorInGroup->getLocation(), | |||
13328 | diag::err_decomp_decl_not_alone) | |||
13329 | << FirstDeclaratorInGroup->getSourceRange() | |||
13330 | << DD->getSourceRange(); | |||
13331 | DiagnosedMultipleDecomps = true; | |||
13332 | } | |||
13333 | ||||
13334 | // A declarator that uses 'auto' in any way other than to declare a | |||
13335 | // variable with a deduced type cannot be combined with any other | |||
13336 | // declarator in the same group. | |||
13337 | if (FirstNonDeducedAutoInGroup && !DiagnosedNonDeducedAuto) { | |||
13338 | Diag(FirstNonDeducedAutoInGroup->getLocation(), | |||
13339 | diag::err_auto_non_deduced_not_alone) | |||
13340 | << FirstNonDeducedAutoInGroup->getType() | |||
13341 | ->hasAutoForTrailingReturnType() | |||
13342 | << FirstDeclaratorInGroup->getSourceRange() | |||
13343 | << DD->getSourceRange(); | |||
13344 | DiagnosedNonDeducedAuto = true; | |||
13345 | } | |||
13346 | } | |||
13347 | } | |||
13348 | ||||
13349 | Decls.push_back(D); | |||
13350 | } | |||
13351 | } | |||
13352 | ||||
13353 | if (DeclSpec::isDeclRep(DS.getTypeSpecType())) { | |||
13354 | if (TagDecl *Tag = dyn_cast_or_null<TagDecl>(DS.getRepAsDecl())) { | |||
13355 | handleTagNumbering(Tag, S); | |||
13356 | if (FirstDeclaratorInGroup && !Tag->hasNameForLinkage() && | |||
13357 | getLangOpts().CPlusPlus) | |||
13358 | Context.addDeclaratorForUnnamedTagDecl(Tag, FirstDeclaratorInGroup); | |||
13359 | } | |||
13360 | } | |||
13361 | ||||
13362 | return BuildDeclaratorGroup(Decls); | |||
13363 | } | |||
13364 | ||||
13365 | /// BuildDeclaratorGroup - convert a list of declarations into a declaration | |||
13366 | /// group, performing any necessary semantic checking. | |||
13367 | Sema::DeclGroupPtrTy | |||
13368 | Sema::BuildDeclaratorGroup(MutableArrayRef<Decl *> Group) { | |||
13369 | // C++14 [dcl.spec.auto]p7: (DR1347) | |||
13370 | // If the type that replaces the placeholder type is not the same in each | |||
13371 | // deduction, the program is ill-formed. | |||
13372 | if (Group.size() > 1) { | |||
13373 | QualType Deduced; | |||
13374 | VarDecl *DeducedDecl = nullptr; | |||
13375 | for (unsigned i = 0, e = Group.size(); i != e; ++i) { | |||
13376 | VarDecl *D = dyn_cast<VarDecl>(Group[i]); | |||
13377 | if (!D || D->isInvalidDecl()) | |||
13378 | break; | |||
13379 | DeducedType *DT = D->getType()->getContainedDeducedType(); | |||
13380 | if (!DT || DT->getDeducedType().isNull()) | |||
13381 | continue; | |||
13382 | if (Deduced.isNull()) { | |||
13383 | Deduced = DT->getDeducedType(); | |||
13384 | DeducedDecl = D; | |||
13385 | } else if (!Context.hasSameType(DT->getDeducedType(), Deduced)) { | |||
13386 | auto *AT = dyn_cast<AutoType>(DT); | |||
13387 | auto Dia = Diag(D->getTypeSourceInfo()->getTypeLoc().getBeginLoc(), | |||
13388 | diag::err_auto_different_deductions) | |||
13389 | << (AT ? (unsigned)AT->getKeyword() : 3) << Deduced | |||
13390 | << DeducedDecl->getDeclName() << DT->getDeducedType() | |||
13391 | << D->getDeclName(); | |||
13392 | if (DeducedDecl->hasInit()) | |||
13393 | Dia << DeducedDecl->getInit()->getSourceRange(); | |||
13394 | if (D->getInit()) | |||
13395 | Dia << D->getInit()->getSourceRange(); | |||
13396 | D->setInvalidDecl(); | |||
13397 | break; | |||
13398 | } | |||
13399 | } | |||
13400 | } | |||
13401 | ||||
13402 | ActOnDocumentableDecls(Group); | |||
13403 | ||||
13404 | return DeclGroupPtrTy::make( | |||
13405 | DeclGroupRef::Create(Context, Group.data(), Group.size())); | |||
13406 | } | |||
13407 | ||||
13408 | void Sema::ActOnDocumentableDecl(Decl *D) { | |||
13409 | ActOnDocumentableDecls(D); | |||
13410 | } | |||
13411 | ||||
13412 | void Sema::ActOnDocumentableDecls(ArrayRef<Decl *> Group) { | |||
13413 | // Don't parse the comment if Doxygen diagnostics are ignored. | |||
13414 | if (Group.empty() || !Group[0]) | |||
13415 | return; | |||
13416 | ||||
13417 | if (Diags.isIgnored(diag::warn_doc_param_not_found, | |||
13418 | Group[0]->getLocation()) && | |||
13419 | Diags.isIgnored(diag::warn_unknown_comment_command_name, | |||
13420 | Group[0]->getLocation())) | |||
13421 | return; | |||
13422 | ||||
13423 | if (Group.size() >= 2) { | |||
13424 | // This is a decl group. Normally it will contain only declarations | |||
13425 | // produced from declarator list. But in case we have any definitions or | |||
13426 | // additional declaration references: | |||
13427 | // 'typedef struct S {} S;' | |||
13428 | // 'typedef struct S *S;' | |||
13429 | // 'struct S *pS;' | |||
13430 | // FinalizeDeclaratorGroup adds these as separate declarations. | |||
13431 | Decl *MaybeTagDecl = Group[0]; | |||
13432 | if (MaybeTagDecl && isa<TagDecl>(MaybeTagDecl)) { | |||
13433 | Group = Group.slice(1); | |||
13434 | } | |||
13435 | } | |||
13436 | ||||
13437 | // FIMXE: We assume every Decl in the group is in the same file. | |||
13438 | // This is false when preprocessor constructs the group from decls in | |||
13439 | // different files (e. g. macros or #include). | |||
13440 | Context.attachCommentsToJustParsedDecls(Group, &getPreprocessor()); | |||
13441 | } | |||
13442 | ||||
13443 | /// Common checks for a parameter-declaration that should apply to both function | |||
13444 | /// parameters and non-type template parameters. | |||
13445 | void Sema::CheckFunctionOrTemplateParamDeclarator(Scope *S, Declarator &D) { | |||
13446 | // Check that there are no default arguments inside the type of this | |||
13447 | // parameter. | |||
13448 | if (getLangOpts().CPlusPlus) | |||
13449 | CheckExtraCXXDefaultArguments(D); | |||
13450 | ||||
13451 | // Parameter declarators cannot be qualified (C++ [dcl.meaning]p1). | |||
13452 | if (D.getCXXScopeSpec().isSet()) { | |||
13453 | Diag(D.getIdentifierLoc(), diag::err_qualified_param_declarator) | |||
13454 | << D.getCXXScopeSpec().getRange(); | |||
13455 | } | |||
13456 | ||||
13457 | // [dcl.meaning]p1: An unqualified-id occurring in a declarator-id shall be a | |||
13458 | // simple identifier except [...irrelevant cases...]. | |||
13459 | switch (D.getName().getKind()) { | |||
13460 | case UnqualifiedIdKind::IK_Identifier: | |||
13461 | break; | |||
13462 | ||||
13463 | case UnqualifiedIdKind::IK_OperatorFunctionId: | |||
13464 | case UnqualifiedIdKind::IK_ConversionFunctionId: | |||
13465 | case UnqualifiedIdKind::IK_LiteralOperatorId: | |||
13466 | case UnqualifiedIdKind::IK_ConstructorName: | |||
13467 | case UnqualifiedIdKind::IK_DestructorName: | |||
13468 | case UnqualifiedIdKind::IK_ImplicitSelfParam: | |||
13469 | case UnqualifiedIdKind::IK_DeductionGuideName: | |||
13470 | Diag(D.getIdentifierLoc(), diag::err_bad_parameter_name) | |||
13471 | << GetNameForDeclarator(D).getName(); | |||
13472 | break; | |||
13473 | ||||
13474 | case UnqualifiedIdKind::IK_TemplateId: | |||
13475 | case UnqualifiedIdKind::IK_ConstructorTemplateId: | |||
13476 | // GetNameForDeclarator would not produce a useful name in this case. | |||
13477 | Diag(D.getIdentifierLoc(), diag::err_bad_parameter_name_template_id); | |||
13478 | break; | |||
13479 | } | |||
13480 | } | |||
13481 | ||||
13482 | /// ActOnParamDeclarator - Called from Parser::ParseFunctionDeclarator() | |||
13483 | /// to introduce parameters into function prototype scope. | |||
13484 | Decl *Sema::ActOnParamDeclarator(Scope *S, Declarator &D) { | |||
13485 | const DeclSpec &DS = D.getDeclSpec(); | |||
13486 | ||||
13487 | // Verify C99 6.7.5.3p2: The only SCS allowed is 'register'. | |||
13488 | ||||
13489 | // C++03 [dcl.stc]p2 also permits 'auto'. | |||
13490 | StorageClass SC = SC_None; | |||
13491 | if (DS.getStorageClassSpec() == DeclSpec::SCS_register) { | |||
13492 | SC = SC_Register; | |||
13493 | // In C++11, the 'register' storage class specifier is deprecated. | |||
13494 | // In C++17, it is not allowed, but we tolerate it as an extension. | |||
13495 | if (getLangOpts().CPlusPlus11) { | |||
13496 | Diag(DS.getStorageClassSpecLoc(), | |||
13497 | getLangOpts().CPlusPlus17 ? diag::ext_register_storage_class | |||
13498 | : diag::warn_deprecated_register) | |||
13499 | << FixItHint::CreateRemoval(DS.getStorageClassSpecLoc()); | |||
13500 | } | |||
13501 | } else if (getLangOpts().CPlusPlus && | |||
13502 | DS.getStorageClassSpec() == DeclSpec::SCS_auto) { | |||
13503 | SC = SC_Auto; | |||
13504 | } else if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified) { | |||
13505 | Diag(DS.getStorageClassSpecLoc(), | |||
13506 | diag::err_invalid_storage_class_in_func_decl); | |||
13507 | D.getMutableDeclSpec().ClearStorageClassSpecs(); | |||
13508 | } | |||
13509 | ||||
13510 | if (DeclSpec::TSCS TSCS = DS.getThreadStorageClassSpec()) | |||
13511 | Diag(DS.getThreadStorageClassSpecLoc(), diag::err_invalid_thread) | |||
13512 | << DeclSpec::getSpecifierName(TSCS); | |||
13513 | if (DS.isInlineSpecified()) | |||
13514 | Diag(DS.getInlineSpecLoc(), diag::err_inline_non_function) | |||
13515 | << getLangOpts().CPlusPlus17; | |||
13516 | if (DS.hasConstexprSpecifier()) | |||
13517 | Diag(DS.getConstexprSpecLoc(), diag::err_invalid_constexpr) | |||
13518 | << 0 << static_cast<int>(D.getDeclSpec().getConstexprSpecifier()); | |||
13519 | ||||
13520 | DiagnoseFunctionSpecifiers(DS); | |||
13521 | ||||
13522 | CheckFunctionOrTemplateParamDeclarator(S, D); | |||
13523 | ||||
13524 | TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); | |||
13525 | QualType parmDeclType = TInfo->getType(); | |||
13526 | ||||
13527 | // Check for redeclaration of parameters, e.g. int foo(int x, int x); | |||
13528 | IdentifierInfo *II = D.getIdentifier(); | |||
13529 | if (II) { | |||
13530 | LookupResult R(*this, II, D.getIdentifierLoc(), LookupOrdinaryName, | |||
13531 | ForVisibleRedeclaration); | |||
13532 | LookupName(R, S); | |||
13533 | if (R.isSingleResult()) { | |||
13534 | NamedDecl *PrevDecl = R.getFoundDecl(); | |||
13535 | if (PrevDecl->isTemplateParameter()) { | |||
13536 | // Maybe we will complain about the shadowed template parameter. | |||
13537 | DiagnoseTemplateParameterShadow(D.getIdentifierLoc(), PrevDecl); | |||
13538 | // Just pretend that we didn't see the previous declaration. | |||
13539 | PrevDecl = nullptr; | |||
13540 | } else if (S->isDeclScope(PrevDecl)) { | |||
13541 | Diag(D.getIdentifierLoc(), diag::err_param_redefinition) << II; | |||
13542 | Diag(PrevDecl->getLocation(), diag::note_previous_declaration); | |||
13543 | ||||
13544 | // Recover by removing the name | |||
13545 | II = nullptr; | |||
13546 | D.SetIdentifier(nullptr, D.getIdentifierLoc()); | |||
13547 | D.setInvalidType(true); | |||
13548 | } | |||
13549 | } | |||
13550 | } | |||
13551 | ||||
13552 | // Temporarily put parameter variables in the translation unit, not | |||
13553 | // the enclosing context. This prevents them from accidentally | |||
13554 | // looking like class members in C++. | |||
13555 | ParmVarDecl *New = | |||
13556 | CheckParameter(Context.getTranslationUnitDecl(), D.getBeginLoc(), | |||
13557 | D.getIdentifierLoc(), II, parmDeclType, TInfo, SC); | |||
13558 | ||||
13559 | if (D.isInvalidType()) | |||
13560 | New->setInvalidDecl(); | |||
13561 | ||||
13562 | assert(S->isFunctionPrototypeScope())((S->isFunctionPrototypeScope()) ? static_cast<void> (0) : __assert_fail ("S->isFunctionPrototypeScope()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 13562, __PRETTY_FUNCTION__)); | |||
13563 | assert(S->getFunctionPrototypeDepth() >= 1)((S->getFunctionPrototypeDepth() >= 1) ? static_cast< void> (0) : __assert_fail ("S->getFunctionPrototypeDepth() >= 1" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 13563, __PRETTY_FUNCTION__)); | |||
13564 | New->setScopeInfo(S->getFunctionPrototypeDepth() - 1, | |||
13565 | S->getNextFunctionPrototypeIndex()); | |||
13566 | ||||
13567 | // Add the parameter declaration into this scope. | |||
13568 | S->AddDecl(New); | |||
13569 | if (II) | |||
13570 | IdResolver.AddDecl(New); | |||
13571 | ||||
13572 | ProcessDeclAttributes(S, New, D); | |||
13573 | ||||
13574 | if (D.getDeclSpec().isModulePrivateSpecified()) | |||
13575 | Diag(New->getLocation(), diag::err_module_private_local) | |||
13576 | << 1 << New << SourceRange(D.getDeclSpec().getModulePrivateSpecLoc()) | |||
13577 | << FixItHint::CreateRemoval(D.getDeclSpec().getModulePrivateSpecLoc()); | |||
13578 | ||||
13579 | if (New->hasAttr<BlocksAttr>()) { | |||
13580 | Diag(New->getLocation(), diag::err_block_on_nonlocal); | |||
13581 | } | |||
13582 | ||||
13583 | if (getLangOpts().OpenCL) | |||
13584 | deduceOpenCLAddressSpace(New); | |||
13585 | ||||
13586 | return New; | |||
13587 | } | |||
13588 | ||||
13589 | /// Synthesizes a variable for a parameter arising from a | |||
13590 | /// typedef. | |||
13591 | ParmVarDecl *Sema::BuildParmVarDeclForTypedef(DeclContext *DC, | |||
13592 | SourceLocation Loc, | |||
13593 | QualType T) { | |||
13594 | /* FIXME: setting StartLoc == Loc. | |||
13595 | Would it be worth to modify callers so as to provide proper source | |||
13596 | location for the unnamed parameters, embedding the parameter's type? */ | |||
13597 | ParmVarDecl *Param = ParmVarDecl::Create(Context, DC, Loc, Loc, nullptr, | |||
13598 | T, Context.getTrivialTypeSourceInfo(T, Loc), | |||
13599 | SC_None, nullptr); | |||
13600 | Param->setImplicit(); | |||
13601 | return Param; | |||
13602 | } | |||
13603 | ||||
13604 | void Sema::DiagnoseUnusedParameters(ArrayRef<ParmVarDecl *> Parameters) { | |||
13605 | // Don't diagnose unused-parameter errors in template instantiations; we | |||
13606 | // will already have done so in the template itself. | |||
13607 | if (inTemplateInstantiation()) | |||
13608 | return; | |||
13609 | ||||
13610 | for (const ParmVarDecl *Parameter : Parameters) { | |||
13611 | if (!Parameter->isReferenced() && Parameter->getDeclName() && | |||
13612 | !Parameter->hasAttr<UnusedAttr>()) { | |||
13613 | Diag(Parameter->getLocation(), diag::warn_unused_parameter) | |||
13614 | << Parameter->getDeclName(); | |||
13615 | } | |||
13616 | } | |||
13617 | } | |||
13618 | ||||
13619 | void Sema::DiagnoseSizeOfParametersAndReturnValue( | |||
13620 | ArrayRef<ParmVarDecl *> Parameters, QualType ReturnTy, NamedDecl *D) { | |||
13621 | if (LangOpts.NumLargeByValueCopy == 0) // No check. | |||
13622 | return; | |||
13623 | ||||
13624 | // Warn if the return value is pass-by-value and larger than the specified | |||
13625 | // threshold. | |||
13626 | if (!ReturnTy->isDependentType() && ReturnTy.isPODType(Context)) { | |||
13627 | unsigned Size = Context.getTypeSizeInChars(ReturnTy).getQuantity(); | |||
13628 | if (Size > LangOpts.NumLargeByValueCopy) | |||
13629 | Diag(D->getLocation(), diag::warn_return_value_size) << D << Size; | |||
13630 | } | |||
13631 | ||||
13632 | // Warn if any parameter is pass-by-value and larger than the specified | |||
13633 | // threshold. | |||
13634 | for (const ParmVarDecl *Parameter : Parameters) { | |||
13635 | QualType T = Parameter->getType(); | |||
13636 | if (T->isDependentType() || !T.isPODType(Context)) | |||
13637 | continue; | |||
13638 | unsigned Size = Context.getTypeSizeInChars(T).getQuantity(); | |||
13639 | if (Size > LangOpts.NumLargeByValueCopy) | |||
13640 | Diag(Parameter->getLocation(), diag::warn_parameter_size) | |||
13641 | << Parameter << Size; | |||
13642 | } | |||
13643 | } | |||
13644 | ||||
13645 | ParmVarDecl *Sema::CheckParameter(DeclContext *DC, SourceLocation StartLoc, | |||
13646 | SourceLocation NameLoc, IdentifierInfo *Name, | |||
13647 | QualType T, TypeSourceInfo *TSInfo, | |||
13648 | StorageClass SC) { | |||
13649 | // In ARC, infer a lifetime qualifier for appropriate parameter types. | |||
13650 | if (getLangOpts().ObjCAutoRefCount && | |||
13651 | T.getObjCLifetime() == Qualifiers::OCL_None && | |||
13652 | T->isObjCLifetimeType()) { | |||
13653 | ||||
13654 | Qualifiers::ObjCLifetime lifetime; | |||
13655 | ||||
13656 | // Special cases for arrays: | |||
13657 | // - if it's const, use __unsafe_unretained | |||
13658 | // - otherwise, it's an error | |||
13659 | if (T->isArrayType()) { | |||
13660 | if (!T.isConstQualified()) { | |||
13661 | if (DelayedDiagnostics.shouldDelayDiagnostics()) | |||
13662 | DelayedDiagnostics.add( | |||
13663 | sema::DelayedDiagnostic::makeForbiddenType( | |||
13664 | NameLoc, diag::err_arc_array_param_no_ownership, T, false)); | |||
13665 | else | |||
13666 | Diag(NameLoc, diag::err_arc_array_param_no_ownership) | |||
13667 | << TSInfo->getTypeLoc().getSourceRange(); | |||
13668 | } | |||
13669 | lifetime = Qualifiers::OCL_ExplicitNone; | |||
13670 | } else { | |||
13671 | lifetime = T->getObjCARCImplicitLifetime(); | |||
13672 | } | |||
13673 | T = Context.getLifetimeQualifiedType(T, lifetime); | |||
13674 | } | |||
13675 | ||||
13676 | ParmVarDecl *New = ParmVarDecl::Create(Context, DC, StartLoc, NameLoc, Name, | |||
13677 | Context.getAdjustedParameterType(T), | |||
13678 | TSInfo, SC, nullptr); | |||
13679 | ||||
13680 | // Make a note if we created a new pack in the scope of a lambda, so that | |||
13681 | // we know that references to that pack must also be expanded within the | |||
13682 | // lambda scope. | |||
13683 | if (New->isParameterPack()) | |||
13684 | if (auto *LSI = getEnclosingLambda()) | |||
13685 | LSI->LocalPacks.push_back(New); | |||
13686 | ||||
13687 | if (New->getType().hasNonTrivialToPrimitiveDestructCUnion() || | |||
13688 | New->getType().hasNonTrivialToPrimitiveCopyCUnion()) | |||
13689 | checkNonTrivialCUnion(New->getType(), New->getLocation(), | |||
13690 | NTCUC_FunctionParam, NTCUK_Destruct|NTCUK_Copy); | |||
13691 | ||||
13692 | // Parameters can not be abstract class types. | |||
13693 | // For record types, this is done by the AbstractClassUsageDiagnoser once | |||
13694 | // the class has been completely parsed. | |||
13695 | if (!CurContext->isRecord() && | |||
13696 | RequireNonAbstractType(NameLoc, T, diag::err_abstract_type_in_decl, | |||
13697 | AbstractParamType)) | |||
13698 | New->setInvalidDecl(); | |||
13699 | ||||
13700 | // Parameter declarators cannot be interface types. All ObjC objects are | |||
13701 | // passed by reference. | |||
13702 | if (T->isObjCObjectType()) { | |||
13703 | SourceLocation TypeEndLoc = | |||
13704 | getLocForEndOfToken(TSInfo->getTypeLoc().getEndLoc()); | |||
13705 | Diag(NameLoc, | |||
13706 | diag::err_object_cannot_be_passed_returned_by_value) << 1 << T | |||
13707 | << FixItHint::CreateInsertion(TypeEndLoc, "*"); | |||
13708 | T = Context.getObjCObjectPointerType(T); | |||
13709 | New->setType(T); | |||
13710 | } | |||
13711 | ||||
13712 | // ISO/IEC TR 18037 S6.7.3: "The type of an object with automatic storage | |||
13713 | // duration shall not be qualified by an address-space qualifier." | |||
13714 | // Since all parameters have automatic store duration, they can not have | |||
13715 | // an address space. | |||
13716 | if (T.getAddressSpace() != LangAS::Default && | |||
13717 | // OpenCL allows function arguments declared to be an array of a type | |||
13718 | // to be qualified with an address space. | |||
13719 | !(getLangOpts().OpenCL && | |||
13720 | (T->isArrayType() || T.getAddressSpace() == LangAS::opencl_private))) { | |||
13721 | Diag(NameLoc, diag::err_arg_with_address_space); | |||
13722 | New->setInvalidDecl(); | |||
13723 | } | |||
13724 | ||||
13725 | // PPC MMA non-pointer types are not allowed as function argument types. | |||
13726 | if (Context.getTargetInfo().getTriple().isPPC64() && | |||
13727 | CheckPPCMMAType(New->getOriginalType(), New->getLocation())) { | |||
13728 | New->setInvalidDecl(); | |||
13729 | } | |||
13730 | ||||
13731 | return New; | |||
13732 | } | |||
13733 | ||||
13734 | void Sema::ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D, | |||
13735 | SourceLocation LocAfterDecls) { | |||
13736 | DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo(); | |||
13737 | ||||
13738 | // Verify 6.9.1p6: 'every identifier in the identifier list shall be declared' | |||
13739 | // for a K&R function. | |||
13740 | if (!FTI.hasPrototype) { | |||
13741 | for (int i = FTI.NumParams; i != 0; /* decrement in loop */) { | |||
13742 | --i; | |||
13743 | if (FTI.Params[i].Param == nullptr) { | |||
13744 | SmallString<256> Code; | |||
13745 | llvm::raw_svector_ostream(Code) | |||
13746 | << " int " << FTI.Params[i].Ident->getName() << ";\n"; | |||
13747 | Diag(FTI.Params[i].IdentLoc, diag::ext_param_not_declared) | |||
13748 | << FTI.Params[i].Ident | |||
13749 | << FixItHint::CreateInsertion(LocAfterDecls, Code); | |||
13750 | ||||
13751 | // Implicitly declare the argument as type 'int' for lack of a better | |||
13752 | // type. | |||
13753 | AttributeFactory attrs; | |||
13754 | DeclSpec DS(attrs); | |||
13755 | const char* PrevSpec; // unused | |||
13756 | unsigned DiagID; // unused | |||
13757 | DS.SetTypeSpecType(DeclSpec::TST_int, FTI.Params[i].IdentLoc, PrevSpec, | |||
13758 | DiagID, Context.getPrintingPolicy()); | |||
13759 | // Use the identifier location for the type source range. | |||
13760 | DS.SetRangeStart(FTI.Params[i].IdentLoc); | |||
13761 | DS.SetRangeEnd(FTI.Params[i].IdentLoc); | |||
13762 | Declarator ParamD(DS, DeclaratorContext::KNRTypeList); | |||
13763 | ParamD.SetIdentifier(FTI.Params[i].Ident, FTI.Params[i].IdentLoc); | |||
13764 | FTI.Params[i].Param = ActOnParamDeclarator(S, ParamD); | |||
13765 | } | |||
13766 | } | |||
13767 | } | |||
13768 | } | |||
13769 | ||||
13770 | Decl * | |||
13771 | Sema::ActOnStartOfFunctionDef(Scope *FnBodyScope, Declarator &D, | |||
13772 | MultiTemplateParamsArg TemplateParameterLists, | |||
13773 | SkipBodyInfo *SkipBody) { | |||
13774 | assert(getCurFunctionDecl() == nullptr && "Function parsing confused")((getCurFunctionDecl() == nullptr && "Function parsing confused" ) ? static_cast<void> (0) : __assert_fail ("getCurFunctionDecl() == nullptr && \"Function parsing confused\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 13774, __PRETTY_FUNCTION__)); | |||
13775 | assert(D.isFunctionDeclarator() && "Not a function declarator!")((D.isFunctionDeclarator() && "Not a function declarator!" ) ? static_cast<void> (0) : __assert_fail ("D.isFunctionDeclarator() && \"Not a function declarator!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 13775, __PRETTY_FUNCTION__)); | |||
13776 | Scope *ParentScope = FnBodyScope->getParent(); | |||
13777 | ||||
13778 | // Check if we are in an `omp begin/end declare variant` scope. If we are, and | |||
13779 | // we define a non-templated function definition, we will create a declaration | |||
13780 | // instead (=BaseFD), and emit the definition with a mangled name afterwards. | |||
13781 | // The base function declaration will have the equivalent of an `omp declare | |||
13782 | // variant` annotation which specifies the mangled definition as a | |||
13783 | // specialization function under the OpenMP context defined as part of the | |||
13784 | // `omp begin declare variant`. | |||
13785 | SmallVector<FunctionDecl *, 4> Bases; | |||
13786 | if (LangOpts.OpenMP && isInOpenMPDeclareVariantScope()) | |||
13787 | ActOnStartOfFunctionDefinitionInOpenMPDeclareVariantScope( | |||
13788 | ParentScope, D, TemplateParameterLists, Bases); | |||
13789 | ||||
13790 | D.setFunctionDefinitionKind(FunctionDefinitionKind::Definition); | |||
13791 | Decl *DP = HandleDeclarator(ParentScope, D, TemplateParameterLists); | |||
13792 | Decl *Dcl = ActOnStartOfFunctionDef(FnBodyScope, DP, SkipBody); | |||
13793 | ||||
13794 | if (!Bases.empty()) | |||
13795 | ActOnFinishedFunctionDefinitionInOpenMPDeclareVariantScope(Dcl, Bases); | |||
13796 | ||||
13797 | return Dcl; | |||
13798 | } | |||
13799 | ||||
13800 | void Sema::ActOnFinishInlineFunctionDef(FunctionDecl *D) { | |||
13801 | Consumer.HandleInlineFunctionDefinition(D); | |||
13802 | } | |||
13803 | ||||
13804 | static bool | |||
13805 | ShouldWarnAboutMissingPrototype(const FunctionDecl *FD, | |||
13806 | const FunctionDecl *&PossiblePrototype) { | |||
13807 | // Don't warn about invalid declarations. | |||
13808 | if (FD->isInvalidDecl()) | |||
13809 | return false; | |||
13810 | ||||
13811 | // Or declarations that aren't global. | |||
13812 | if (!FD->isGlobal()) | |||
13813 | return false; | |||
13814 | ||||
13815 | // Don't warn about C++ member functions. | |||
13816 | if (isa<CXXMethodDecl>(FD)) | |||
13817 | return false; | |||
13818 | ||||
13819 | // Don't warn about 'main'. | |||
13820 | if (isa<TranslationUnitDecl>(FD->getDeclContext()->getRedeclContext())) | |||
13821 | if (IdentifierInfo *II = FD->getIdentifier()) | |||
13822 | if (II->isStr("main")) | |||
13823 | return false; | |||
13824 | ||||
13825 | // Don't warn about inline functions. | |||
13826 | if (FD->isInlined()) | |||
13827 | return false; | |||
13828 | ||||
13829 | // Don't warn about function templates. | |||
13830 | if (FD->getDescribedFunctionTemplate()) | |||
13831 | return false; | |||
13832 | ||||
13833 | // Don't warn about function template specializations. | |||
13834 | if (FD->isFunctionTemplateSpecialization()) | |||
13835 | return false; | |||
13836 | ||||
13837 | // Don't warn for OpenCL kernels. | |||
13838 | if (FD->hasAttr<OpenCLKernelAttr>()) | |||
13839 | return false; | |||
13840 | ||||
13841 | // Don't warn on explicitly deleted functions. | |||
13842 | if (FD->isDeleted()) | |||
13843 | return false; | |||
13844 | ||||
13845 | for (const FunctionDecl *Prev = FD->getPreviousDecl(); | |||
13846 | Prev; Prev = Prev->getPreviousDecl()) { | |||
13847 | // Ignore any declarations that occur in function or method | |||
13848 | // scope, because they aren't visible from the header. | |||
13849 | if (Prev->getLexicalDeclContext()->isFunctionOrMethod()) | |||
13850 | continue; | |||
13851 | ||||
13852 | PossiblePrototype = Prev; | |||
13853 | return Prev->getType()->isFunctionNoProtoType(); | |||
13854 | } | |||
13855 | ||||
13856 | return true; | |||
13857 | } | |||
13858 | ||||
13859 | void | |||
13860 | Sema::CheckForFunctionRedefinition(FunctionDecl *FD, | |||
13861 | const FunctionDecl *EffectiveDefinition, | |||
13862 | SkipBodyInfo *SkipBody) { | |||
13863 | const FunctionDecl *Definition = EffectiveDefinition; | |||
13864 | if (!Definition && | |||
13865 | !FD->isDefined(Definition, /*CheckForPendingFriendDefinition*/ true)) | |||
13866 | return; | |||
13867 | ||||
13868 | if (Definition->getFriendObjectKind() != Decl::FOK_None) { | |||
13869 | if (FunctionDecl *OrigDef = Definition->getInstantiatedFromMemberFunction()) { | |||
13870 | if (FunctionDecl *OrigFD = FD->getInstantiatedFromMemberFunction()) { | |||
13871 | // A merged copy of the same function, instantiated as a member of | |||
13872 | // the same class, is OK. | |||
13873 | if (declaresSameEntity(OrigFD, OrigDef) && | |||
13874 | declaresSameEntity(cast<Decl>(Definition->getLexicalDeclContext()), | |||
13875 | cast<Decl>(FD->getLexicalDeclContext()))) | |||
13876 | return; | |||
13877 | } | |||
13878 | } | |||
13879 | } | |||
13880 | ||||
13881 | if (canRedefineFunction(Definition, getLangOpts())) | |||
13882 | return; | |||
13883 | ||||
13884 | // Don't emit an error when this is redefinition of a typo-corrected | |||
13885 | // definition. | |||
13886 | if (TypoCorrectedFunctionDefinitions.count(Definition)) | |||
13887 | return; | |||
13888 | ||||
13889 | // If we don't have a visible definition of the function, and it's inline or | |||
13890 | // a template, skip the new definition. | |||
13891 | if (SkipBody && !hasVisibleDefinition(Definition) && | |||
13892 | (Definition->getFormalLinkage() == InternalLinkage || | |||
13893 | Definition->isInlined() || | |||
13894 | Definition->getDescribedFunctionTemplate() || | |||
13895 | Definition->getNumTemplateParameterLists())) { | |||
13896 | SkipBody->ShouldSkip = true; | |||
13897 | SkipBody->Previous = const_cast<FunctionDecl*>(Definition); | |||
13898 | if (auto *TD = Definition->getDescribedFunctionTemplate()) | |||
13899 | makeMergedDefinitionVisible(TD); | |||
13900 | makeMergedDefinitionVisible(const_cast<FunctionDecl*>(Definition)); | |||
13901 | return; | |||
13902 | } | |||
13903 | ||||
13904 | if (getLangOpts().GNUMode && Definition->isInlineSpecified() && | |||
13905 | Definition->getStorageClass() == SC_Extern) | |||
13906 | Diag(FD->getLocation(), diag::err_redefinition_extern_inline) | |||
13907 | << FD << getLangOpts().CPlusPlus; | |||
13908 | else | |||
13909 | Diag(FD->getLocation(), diag::err_redefinition) << FD; | |||
13910 | ||||
13911 | Diag(Definition->getLocation(), diag::note_previous_definition); | |||
13912 | FD->setInvalidDecl(); | |||
13913 | } | |||
13914 | ||||
13915 | static void RebuildLambdaScopeInfo(CXXMethodDecl *CallOperator, | |||
13916 | Sema &S) { | |||
13917 | CXXRecordDecl *const LambdaClass = CallOperator->getParent(); | |||
13918 | ||||
13919 | LambdaScopeInfo *LSI = S.PushLambdaScope(); | |||
13920 | LSI->CallOperator = CallOperator; | |||
13921 | LSI->Lambda = LambdaClass; | |||
13922 | LSI->ReturnType = CallOperator->getReturnType(); | |||
13923 | const LambdaCaptureDefault LCD = LambdaClass->getLambdaCaptureDefault(); | |||
13924 | ||||
13925 | if (LCD == LCD_None) | |||
13926 | LSI->ImpCaptureStyle = CapturingScopeInfo::ImpCap_None; | |||
13927 | else if (LCD == LCD_ByCopy) | |||
13928 | LSI->ImpCaptureStyle = CapturingScopeInfo::ImpCap_LambdaByval; | |||
13929 | else if (LCD == LCD_ByRef) | |||
13930 | LSI->ImpCaptureStyle = CapturingScopeInfo::ImpCap_LambdaByref; | |||
13931 | DeclarationNameInfo DNI = CallOperator->getNameInfo(); | |||
13932 | ||||
13933 | LSI->IntroducerRange = DNI.getCXXOperatorNameRange(); | |||
13934 | LSI->Mutable = !CallOperator->isConst(); | |||
13935 | ||||
13936 | // Add the captures to the LSI so they can be noted as already | |||
13937 | // captured within tryCaptureVar. | |||
13938 | auto I = LambdaClass->field_begin(); | |||
13939 | for (const auto &C : LambdaClass->captures()) { | |||
13940 | if (C.capturesVariable()) { | |||
13941 | VarDecl *VD = C.getCapturedVar(); | |||
13942 | if (VD->isInitCapture()) | |||
13943 | S.CurrentInstantiationScope->InstantiatedLocal(VD, VD); | |||
13944 | const bool ByRef = C.getCaptureKind() == LCK_ByRef; | |||
13945 | LSI->addCapture(VD, /*IsBlock*/false, ByRef, | |||
13946 | /*RefersToEnclosingVariableOrCapture*/true, C.getLocation(), | |||
13947 | /*EllipsisLoc*/C.isPackExpansion() | |||
13948 | ? C.getEllipsisLoc() : SourceLocation(), | |||
13949 | I->getType(), /*Invalid*/false); | |||
13950 | ||||
13951 | } else if (C.capturesThis()) { | |||
13952 | LSI->addThisCapture(/*Nested*/ false, C.getLocation(), I->getType(), | |||
13953 | C.getCaptureKind() == LCK_StarThis); | |||
13954 | } else { | |||
13955 | LSI->addVLATypeCapture(C.getLocation(), I->getCapturedVLAType(), | |||
13956 | I->getType()); | |||
13957 | } | |||
13958 | ++I; | |||
13959 | } | |||
13960 | } | |||
13961 | ||||
13962 | Decl *Sema::ActOnStartOfFunctionDef(Scope *FnBodyScope, Decl *D, | |||
13963 | SkipBodyInfo *SkipBody) { | |||
13964 | if (!D) { | |||
13965 | // Parsing the function declaration failed in some way. Push on a fake scope | |||
13966 | // anyway so we can try to parse the function body. | |||
13967 | PushFunctionScope(); | |||
13968 | PushExpressionEvaluationContext(ExprEvalContexts.back().Context); | |||
13969 | return D; | |||
13970 | } | |||
13971 | ||||
13972 | FunctionDecl *FD = nullptr; | |||
13973 | ||||
13974 | if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D)) | |||
13975 | FD = FunTmpl->getTemplatedDecl(); | |||
13976 | else | |||
13977 | FD = cast<FunctionDecl>(D); | |||
13978 | ||||
13979 | // Do not push if it is a lambda because one is already pushed when building | |||
13980 | // the lambda in ActOnStartOfLambdaDefinition(). | |||
13981 | if (!isLambdaCallOperator(FD)) | |||
13982 | PushExpressionEvaluationContext( | |||
13983 | FD->isConsteval() ? ExpressionEvaluationContext::ConstantEvaluated | |||
13984 | : ExprEvalContexts.back().Context); | |||
13985 | ||||
13986 | // Check for defining attributes before the check for redefinition. | |||
13987 | if (const auto *Attr = FD->getAttr<AliasAttr>()) { | |||
13988 | Diag(Attr->getLocation(), diag::err_alias_is_definition) << FD << 0; | |||
13989 | FD->dropAttr<AliasAttr>(); | |||
13990 | FD->setInvalidDecl(); | |||
13991 | } | |||
13992 | if (const auto *Attr = FD->getAttr<IFuncAttr>()) { | |||
13993 | Diag(Attr->getLocation(), diag::err_alias_is_definition) << FD << 1; | |||
13994 | FD->dropAttr<IFuncAttr>(); | |||
13995 | FD->setInvalidDecl(); | |||
13996 | } | |||
13997 | ||||
13998 | if (auto *Ctor = dyn_cast<CXXConstructorDecl>(FD)) { | |||
13999 | if (Ctor->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && | |||
14000 | Ctor->isDefaultConstructor() && | |||
14001 | Context.getTargetInfo().getCXXABI().isMicrosoft()) { | |||
14002 | // If this is an MS ABI dllexport default constructor, instantiate any | |||
14003 | // default arguments. | |||
14004 | InstantiateDefaultCtorDefaultArgs(Ctor); | |||
14005 | } | |||
14006 | } | |||
14007 | ||||
14008 | // See if this is a redefinition. If 'will have body' (or similar) is already | |||
14009 | // set, then these checks were already performed when it was set. | |||
14010 | if (!FD->willHaveBody() && !FD->isLateTemplateParsed() && | |||
14011 | !FD->isThisDeclarationInstantiatedFromAFriendDefinition()) { | |||
14012 | CheckForFunctionRedefinition(FD, nullptr, SkipBody); | |||
14013 | ||||
14014 | // If we're skipping the body, we're done. Don't enter the scope. | |||
14015 | if (SkipBody && SkipBody->ShouldSkip) | |||
14016 | return D; | |||
14017 | } | |||
14018 | ||||
14019 | // Mark this function as "will have a body eventually". This lets users to | |||
14020 | // call e.g. isInlineDefinitionExternallyVisible while we're still parsing | |||
14021 | // this function. | |||
14022 | FD->setWillHaveBody(); | |||
14023 | ||||
14024 | // If we are instantiating a generic lambda call operator, push | |||
14025 | // a LambdaScopeInfo onto the function stack. But use the information | |||
14026 | // that's already been calculated (ActOnLambdaExpr) to prime the current | |||
14027 | // LambdaScopeInfo. | |||
14028 | // When the template operator is being specialized, the LambdaScopeInfo, | |||
14029 | // has to be properly restored so that tryCaptureVariable doesn't try | |||
14030 | // and capture any new variables. In addition when calculating potential | |||
14031 | // captures during transformation of nested lambdas, it is necessary to | |||
14032 | // have the LSI properly restored. | |||
14033 | if (isGenericLambdaCallOperatorSpecialization(FD)) { | |||
14034 | assert(inTemplateInstantiation() &&((inTemplateInstantiation() && "There should be an active template instantiation on the stack " "when instantiating a generic lambda!") ? static_cast<void > (0) : __assert_fail ("inTemplateInstantiation() && \"There should be an active template instantiation on the stack \" \"when instantiating a generic lambda!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14036, __PRETTY_FUNCTION__)) | |||
14035 | "There should be an active template instantiation on the stack "((inTemplateInstantiation() && "There should be an active template instantiation on the stack " "when instantiating a generic lambda!") ? static_cast<void > (0) : __assert_fail ("inTemplateInstantiation() && \"There should be an active template instantiation on the stack \" \"when instantiating a generic lambda!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14036, __PRETTY_FUNCTION__)) | |||
14036 | "when instantiating a generic lambda!")((inTemplateInstantiation() && "There should be an active template instantiation on the stack " "when instantiating a generic lambda!") ? static_cast<void > (0) : __assert_fail ("inTemplateInstantiation() && \"There should be an active template instantiation on the stack \" \"when instantiating a generic lambda!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14036, __PRETTY_FUNCTION__)); | |||
14037 | RebuildLambdaScopeInfo(cast<CXXMethodDecl>(D), *this); | |||
14038 | } else { | |||
14039 | // Enter a new function scope | |||
14040 | PushFunctionScope(); | |||
14041 | } | |||
14042 | ||||
14043 | // Builtin functions cannot be defined. | |||
14044 | if (unsigned BuiltinID = FD->getBuiltinID()) { | |||
14045 | if (!Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID) && | |||
14046 | !Context.BuiltinInfo.isPredefinedRuntimeFunction(BuiltinID)) { | |||
14047 | Diag(FD->getLocation(), diag::err_builtin_definition) << FD; | |||
14048 | FD->setInvalidDecl(); | |||
14049 | } | |||
14050 | } | |||
14051 | ||||
14052 | // The return type of a function definition must be complete | |||
14053 | // (C99 6.9.1p3, C++ [dcl.fct]p6). | |||
14054 | QualType ResultType = FD->getReturnType(); | |||
14055 | if (!ResultType->isDependentType() && !ResultType->isVoidType() && | |||
14056 | !FD->isInvalidDecl() && | |||
14057 | RequireCompleteType(FD->getLocation(), ResultType, | |||
14058 | diag::err_func_def_incomplete_result)) | |||
14059 | FD->setInvalidDecl(); | |||
14060 | ||||
14061 | if (FnBodyScope) | |||
14062 | PushDeclContext(FnBodyScope, FD); | |||
14063 | ||||
14064 | // Check the validity of our function parameters | |||
14065 | CheckParmsForFunctionDef(FD->parameters(), | |||
14066 | /*CheckParameterNames=*/true); | |||
14067 | ||||
14068 | // Add non-parameter declarations already in the function to the current | |||
14069 | // scope. | |||
14070 | if (FnBodyScope) { | |||
14071 | for (Decl *NPD : FD->decls()) { | |||
14072 | auto *NonParmDecl = dyn_cast<NamedDecl>(NPD); | |||
14073 | if (!NonParmDecl) | |||
14074 | continue; | |||
14075 | assert(!isa<ParmVarDecl>(NonParmDecl) &&((!isa<ParmVarDecl>(NonParmDecl) && "parameters should not be in newly created FD yet" ) ? static_cast<void> (0) : __assert_fail ("!isa<ParmVarDecl>(NonParmDecl) && \"parameters should not be in newly created FD yet\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14076, __PRETTY_FUNCTION__)) | |||
14076 | "parameters should not be in newly created FD yet")((!isa<ParmVarDecl>(NonParmDecl) && "parameters should not be in newly created FD yet" ) ? static_cast<void> (0) : __assert_fail ("!isa<ParmVarDecl>(NonParmDecl) && \"parameters should not be in newly created FD yet\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14076, __PRETTY_FUNCTION__)); | |||
14077 | ||||
14078 | // If the decl has a name, make it accessible in the current scope. | |||
14079 | if (NonParmDecl->getDeclName()) | |||
14080 | PushOnScopeChains(NonParmDecl, FnBodyScope, /*AddToContext=*/false); | |||
14081 | ||||
14082 | // Similarly, dive into enums and fish their constants out, making them | |||
14083 | // accessible in this scope. | |||
14084 | if (auto *ED = dyn_cast<EnumDecl>(NonParmDecl)) { | |||
14085 | for (auto *EI : ED->enumerators()) | |||
14086 | PushOnScopeChains(EI, FnBodyScope, /*AddToContext=*/false); | |||
14087 | } | |||
14088 | } | |||
14089 | } | |||
14090 | ||||
14091 | // Introduce our parameters into the function scope | |||
14092 | for (auto Param : FD->parameters()) { | |||
14093 | Param->setOwningFunction(FD); | |||
14094 | ||||
14095 | // If this has an identifier, add it to the scope stack. | |||
14096 | if (Param->getIdentifier() && FnBodyScope) { | |||
14097 | CheckShadow(FnBodyScope, Param); | |||
14098 | ||||
14099 | PushOnScopeChains(Param, FnBodyScope); | |||
14100 | } | |||
14101 | } | |||
14102 | ||||
14103 | // Ensure that the function's exception specification is instantiated. | |||
14104 | if (const FunctionProtoType *FPT = FD->getType()->getAs<FunctionProtoType>()) | |||
14105 | ResolveExceptionSpec(D->getLocation(), FPT); | |||
14106 | ||||
14107 | // dllimport cannot be applied to non-inline function definitions. | |||
14108 | if (FD->hasAttr<DLLImportAttr>() && !FD->isInlined() && | |||
14109 | !FD->isTemplateInstantiation()) { | |||
14110 | assert(!FD->hasAttr<DLLExportAttr>())((!FD->hasAttr<DLLExportAttr>()) ? static_cast<void > (0) : __assert_fail ("!FD->hasAttr<DLLExportAttr>()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14110, __PRETTY_FUNCTION__)); | |||
14111 | Diag(FD->getLocation(), diag::err_attribute_dllimport_function_definition); | |||
14112 | FD->setInvalidDecl(); | |||
14113 | return D; | |||
14114 | } | |||
14115 | // We want to attach documentation to original Decl (which might be | |||
14116 | // a function template). | |||
14117 | ActOnDocumentableDecl(D); | |||
14118 | if (getCurLexicalContext()->isObjCContainer() && | |||
14119 | getCurLexicalContext()->getDeclKind() != Decl::ObjCCategoryImpl && | |||
14120 | getCurLexicalContext()->getDeclKind() != Decl::ObjCImplementation) | |||
14121 | Diag(FD->getLocation(), diag::warn_function_def_in_objc_container); | |||
14122 | ||||
14123 | return D; | |||
14124 | } | |||
14125 | ||||
14126 | /// Given the set of return statements within a function body, | |||
14127 | /// compute the variables that are subject to the named return value | |||
14128 | /// optimization. | |||
14129 | /// | |||
14130 | /// Each of the variables that is subject to the named return value | |||
14131 | /// optimization will be marked as NRVO variables in the AST, and any | |||
14132 | /// return statement that has a marked NRVO variable as its NRVO candidate can | |||
14133 | /// use the named return value optimization. | |||
14134 | /// | |||
14135 | /// This function applies a very simplistic algorithm for NRVO: if every return | |||
14136 | /// statement in the scope of a variable has the same NRVO candidate, that | |||
14137 | /// candidate is an NRVO variable. | |||
14138 | void Sema::computeNRVO(Stmt *Body, FunctionScopeInfo *Scope) { | |||
14139 | ReturnStmt **Returns = Scope->Returns.data(); | |||
14140 | ||||
14141 | for (unsigned I = 0, E = Scope->Returns.size(); I != E; ++I) { | |||
14142 | if (const VarDecl *NRVOCandidate = Returns[I]->getNRVOCandidate()) { | |||
14143 | if (!NRVOCandidate->isNRVOVariable()) | |||
14144 | Returns[I]->setNRVOCandidate(nullptr); | |||
14145 | } | |||
14146 | } | |||
14147 | } | |||
14148 | ||||
14149 | bool Sema::canDelayFunctionBody(const Declarator &D) { | |||
14150 | // We can't delay parsing the body of a constexpr function template (yet). | |||
14151 | if (D.getDeclSpec().hasConstexprSpecifier()) | |||
14152 | return false; | |||
14153 | ||||
14154 | // We can't delay parsing the body of a function template with a deduced | |||
14155 | // return type (yet). | |||
14156 | if (D.getDeclSpec().hasAutoTypeSpec()) { | |||
14157 | // If the placeholder introduces a non-deduced trailing return type, | |||
14158 | // we can still delay parsing it. | |||
14159 | if (D.getNumTypeObjects()) { | |||
14160 | const auto &Outer = D.getTypeObject(D.getNumTypeObjects() - 1); | |||
14161 | if (Outer.Kind == DeclaratorChunk::Function && | |||
14162 | Outer.Fun.hasTrailingReturnType()) { | |||
14163 | QualType Ty = GetTypeFromParser(Outer.Fun.getTrailingReturnType()); | |||
14164 | return Ty.isNull() || !Ty->isUndeducedType(); | |||
14165 | } | |||
14166 | } | |||
14167 | return false; | |||
14168 | } | |||
14169 | ||||
14170 | return true; | |||
14171 | } | |||
14172 | ||||
14173 | bool Sema::canSkipFunctionBody(Decl *D) { | |||
14174 | // We cannot skip the body of a function (or function template) which is | |||
14175 | // constexpr, since we may need to evaluate its body in order to parse the | |||
14176 | // rest of the file. | |||
14177 | // We cannot skip the body of a function with an undeduced return type, | |||
14178 | // because any callers of that function need to know the type. | |||
14179 | if (const FunctionDecl *FD = D->getAsFunction()) { | |||
14180 | if (FD->isConstexpr()) | |||
14181 | return false; | |||
14182 | // We can't simply call Type::isUndeducedType here, because inside template | |||
14183 | // auto can be deduced to a dependent type, which is not considered | |||
14184 | // "undeduced". | |||
14185 | if (FD->getReturnType()->getContainedDeducedType()) | |||
14186 | return false; | |||
14187 | } | |||
14188 | return Consumer.shouldSkipFunctionBody(D); | |||
14189 | } | |||
14190 | ||||
14191 | Decl *Sema::ActOnSkippedFunctionBody(Decl *Decl) { | |||
14192 | if (!Decl) | |||
14193 | return nullptr; | |||
14194 | if (FunctionDecl *FD = Decl->getAsFunction()) | |||
14195 | FD->setHasSkippedBody(); | |||
14196 | else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(Decl)) | |||
14197 | MD->setHasSkippedBody(); | |||
14198 | return Decl; | |||
14199 | } | |||
14200 | ||||
14201 | Decl *Sema::ActOnFinishFunctionBody(Decl *D, Stmt *BodyArg) { | |||
14202 | return ActOnFinishFunctionBody(D, BodyArg, false); | |||
14203 | } | |||
14204 | ||||
14205 | /// RAII object that pops an ExpressionEvaluationContext when exiting a function | |||
14206 | /// body. | |||
14207 | class ExitFunctionBodyRAII { | |||
14208 | public: | |||
14209 | ExitFunctionBodyRAII(Sema &S, bool IsLambda) : S(S), IsLambda(IsLambda) {} | |||
14210 | ~ExitFunctionBodyRAII() { | |||
14211 | if (!IsLambda) | |||
14212 | S.PopExpressionEvaluationContext(); | |||
14213 | } | |||
14214 | ||||
14215 | private: | |||
14216 | Sema &S; | |||
14217 | bool IsLambda = false; | |||
14218 | }; | |||
14219 | ||||
14220 | static void diagnoseImplicitlyRetainedSelf(Sema &S) { | |||
14221 | llvm::DenseMap<const BlockDecl *, bool> EscapeInfo; | |||
14222 | ||||
14223 | auto IsOrNestedInEscapingBlock = [&](const BlockDecl *BD) { | |||
14224 | if (EscapeInfo.count(BD)) | |||
14225 | return EscapeInfo[BD]; | |||
14226 | ||||
14227 | bool R = false; | |||
14228 | const BlockDecl *CurBD = BD; | |||
14229 | ||||
14230 | do { | |||
14231 | R = !CurBD->doesNotEscape(); | |||
14232 | if (R) | |||
14233 | break; | |||
14234 | CurBD = CurBD->getParent()->getInnermostBlockDecl(); | |||
14235 | } while (CurBD); | |||
14236 | ||||
14237 | return EscapeInfo[BD] = R; | |||
14238 | }; | |||
14239 | ||||
14240 | // If the location where 'self' is implicitly retained is inside a escaping | |||
14241 | // block, emit a diagnostic. | |||
14242 | for (const std::pair<SourceLocation, const BlockDecl *> &P : | |||
14243 | S.ImplicitlyRetainedSelfLocs) | |||
14244 | if (IsOrNestedInEscapingBlock(P.second)) | |||
14245 | S.Diag(P.first, diag::warn_implicitly_retains_self) | |||
14246 | << FixItHint::CreateInsertion(P.first, "self->"); | |||
14247 | } | |||
14248 | ||||
14249 | Decl *Sema::ActOnFinishFunctionBody(Decl *dcl, Stmt *Body, | |||
14250 | bool IsInstantiation) { | |||
14251 | FunctionScopeInfo *FSI = getCurFunction(); | |||
14252 | FunctionDecl *FD = dcl ? dcl->getAsFunction() : nullptr; | |||
14253 | ||||
14254 | if (FSI->UsesFPIntrin && !FD->hasAttr<StrictFPAttr>()) | |||
14255 | FD->addAttr(StrictFPAttr::CreateImplicit(Context)); | |||
14256 | ||||
14257 | sema::AnalysisBasedWarnings::Policy WP = AnalysisWarnings.getDefaultPolicy(); | |||
14258 | sema::AnalysisBasedWarnings::Policy *ActivePolicy = nullptr; | |||
14259 | ||||
14260 | if (getLangOpts().Coroutines && FSI->isCoroutine()) | |||
14261 | CheckCompletedCoroutineBody(FD, Body); | |||
14262 | ||||
14263 | // Do not call PopExpressionEvaluationContext() if it is a lambda because one | |||
14264 | // is already popped when finishing the lambda in BuildLambdaExpr(). This is | |||
14265 | // meant to pop the context added in ActOnStartOfFunctionDef(). | |||
14266 | ExitFunctionBodyRAII ExitRAII(*this, isLambdaCallOperator(FD)); | |||
14267 | ||||
14268 | if (FD) { | |||
14269 | FD->setBody(Body); | |||
14270 | FD->setWillHaveBody(false); | |||
14271 | ||||
14272 | if (getLangOpts().CPlusPlus14) { | |||
14273 | if (!FD->isInvalidDecl() && Body && !FD->isDependentContext() && | |||
14274 | FD->getReturnType()->isUndeducedType()) { | |||
14275 | // If the function has a deduced result type but contains no 'return' | |||
14276 | // statements, the result type as written must be exactly 'auto', and | |||
14277 | // the deduced result type is 'void'. | |||
14278 | if (!FD->getReturnType()->getAs<AutoType>()) { | |||
14279 | Diag(dcl->getLocation(), diag::err_auto_fn_no_return_but_not_auto) | |||
14280 | << FD->getReturnType(); | |||
14281 | FD->setInvalidDecl(); | |||
14282 | } else { | |||
14283 | // Substitute 'void' for the 'auto' in the type. | |||
14284 | TypeLoc ResultType = getReturnTypeLoc(FD); | |||
14285 | Context.adjustDeducedFunctionResultType( | |||
14286 | FD, SubstAutoType(ResultType.getType(), Context.VoidTy)); | |||
14287 | } | |||
14288 | } | |||
14289 | } else if (getLangOpts().CPlusPlus11 && isLambdaCallOperator(FD)) { | |||
14290 | // In C++11, we don't use 'auto' deduction rules for lambda call | |||
14291 | // operators because we don't support return type deduction. | |||
14292 | auto *LSI = getCurLambda(); | |||
14293 | if (LSI->HasImplicitReturnType) { | |||
14294 | deduceClosureReturnType(*LSI); | |||
14295 | ||||
14296 | // C++11 [expr.prim.lambda]p4: | |||
14297 | // [...] if there are no return statements in the compound-statement | |||
14298 | // [the deduced type is] the type void | |||
14299 | QualType RetType = | |||
14300 | LSI->ReturnType.isNull() ? Context.VoidTy : LSI->ReturnType; | |||
14301 | ||||
14302 | // Update the return type to the deduced type. | |||
14303 | const auto *Proto = FD->getType()->castAs<FunctionProtoType>(); | |||
14304 | FD->setType(Context.getFunctionType(RetType, Proto->getParamTypes(), | |||
14305 | Proto->getExtProtoInfo())); | |||
14306 | } | |||
14307 | } | |||
14308 | ||||
14309 | // If the function implicitly returns zero (like 'main') or is naked, | |||
14310 | // don't complain about missing return statements. | |||
14311 | if (FD->hasImplicitReturnZero() || FD->hasAttr<NakedAttr>()) | |||
14312 | WP.disableCheckFallThrough(); | |||
14313 | ||||
14314 | // MSVC permits the use of pure specifier (=0) on function definition, | |||
14315 | // defined at class scope, warn about this non-standard construct. | |||
14316 | if (getLangOpts().MicrosoftExt && FD->isPure() && !FD->isOutOfLine()) | |||
14317 | Diag(FD->getLocation(), diag::ext_pure_function_definition); | |||
14318 | ||||
14319 | if (!FD->isInvalidDecl()) { | |||
14320 | // Don't diagnose unused parameters of defaulted or deleted functions. | |||
14321 | if (!FD->isDeleted() && !FD->isDefaulted() && !FD->hasSkippedBody()) | |||
14322 | DiagnoseUnusedParameters(FD->parameters()); | |||
14323 | DiagnoseSizeOfParametersAndReturnValue(FD->parameters(), | |||
14324 | FD->getReturnType(), FD); | |||
14325 | ||||
14326 | // If this is a structor, we need a vtable. | |||
14327 | if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(FD)) | |||
14328 | MarkVTableUsed(FD->getLocation(), Constructor->getParent()); | |||
14329 | else if (CXXDestructorDecl *Destructor = dyn_cast<CXXDestructorDecl>(FD)) | |||
14330 | MarkVTableUsed(FD->getLocation(), Destructor->getParent()); | |||
14331 | ||||
14332 | // Try to apply the named return value optimization. We have to check | |||
14333 | // if we can do this here because lambdas keep return statements around | |||
14334 | // to deduce an implicit return type. | |||
14335 | if (FD->getReturnType()->isRecordType() && | |||
14336 | (!getLangOpts().CPlusPlus || !FD->isDependentContext())) | |||
14337 | computeNRVO(Body, FSI); | |||
14338 | } | |||
14339 | ||||
14340 | // GNU warning -Wmissing-prototypes: | |||
14341 | // Warn if a global function is defined without a previous | |||
14342 | // prototype declaration. This warning is issued even if the | |||
14343 | // definition itself provides a prototype. The aim is to detect | |||
14344 | // global functions that fail to be declared in header files. | |||
14345 | const FunctionDecl *PossiblePrototype = nullptr; | |||
14346 | if (ShouldWarnAboutMissingPrototype(FD, PossiblePrototype)) { | |||
14347 | Diag(FD->getLocation(), diag::warn_missing_prototype) << FD; | |||
14348 | ||||
14349 | if (PossiblePrototype) { | |||
14350 | // We found a declaration that is not a prototype, | |||
14351 | // but that could be a zero-parameter prototype | |||
14352 | if (TypeSourceInfo *TI = PossiblePrototype->getTypeSourceInfo()) { | |||
14353 | TypeLoc TL = TI->getTypeLoc(); | |||
14354 | if (FunctionNoProtoTypeLoc FTL = TL.getAs<FunctionNoProtoTypeLoc>()) | |||
14355 | Diag(PossiblePrototype->getLocation(), | |||
14356 | diag::note_declaration_not_a_prototype) | |||
14357 | << (FD->getNumParams() != 0) | |||
14358 | << (FD->getNumParams() == 0 | |||
14359 | ? FixItHint::CreateInsertion(FTL.getRParenLoc(), "void") | |||
14360 | : FixItHint{}); | |||
14361 | } | |||
14362 | } else { | |||
14363 | // Returns true if the token beginning at this Loc is `const`. | |||
14364 | auto isLocAtConst = [&](SourceLocation Loc, const SourceManager &SM, | |||
14365 | const LangOptions &LangOpts) { | |||
14366 | std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc); | |||
14367 | if (LocInfo.first.isInvalid()) | |||
14368 | return false; | |||
14369 | ||||
14370 | bool Invalid = false; | |||
14371 | StringRef Buffer = SM.getBufferData(LocInfo.first, &Invalid); | |||
14372 | if (Invalid) | |||
14373 | return false; | |||
14374 | ||||
14375 | if (LocInfo.second > Buffer.size()) | |||
14376 | return false; | |||
14377 | ||||
14378 | const char *LexStart = Buffer.data() + LocInfo.second; | |||
14379 | StringRef StartTok(LexStart, Buffer.size() - LocInfo.second); | |||
14380 | ||||
14381 | return StartTok.consume_front("const") && | |||
14382 | (StartTok.empty() || isWhitespace(StartTok[0]) || | |||
14383 | StartTok.startswith("/*") || StartTok.startswith("//")); | |||
14384 | }; | |||
14385 | ||||
14386 | auto findBeginLoc = [&]() { | |||
14387 | // If the return type has `const` qualifier, we want to insert | |||
14388 | // `static` before `const` (and not before the typename). | |||
14389 | if ((FD->getReturnType()->isAnyPointerType() && | |||
14390 | FD->getReturnType()->getPointeeType().isConstQualified()) || | |||
14391 | FD->getReturnType().isConstQualified()) { | |||
14392 | // But only do this if we can determine where the `const` is. | |||
14393 | ||||
14394 | if (isLocAtConst(FD->getBeginLoc(), getSourceManager(), | |||
14395 | getLangOpts())) | |||
14396 | ||||
14397 | return FD->getBeginLoc(); | |||
14398 | } | |||
14399 | return FD->getTypeSpecStartLoc(); | |||
14400 | }; | |||
14401 | Diag(FD->getTypeSpecStartLoc(), diag::note_static_for_internal_linkage) | |||
14402 | << /* function */ 1 | |||
14403 | << (FD->getStorageClass() == SC_None | |||
14404 | ? FixItHint::CreateInsertion(findBeginLoc(), "static ") | |||
14405 | : FixItHint{}); | |||
14406 | } | |||
14407 | ||||
14408 | // GNU warning -Wstrict-prototypes | |||
14409 | // Warn if K&R function is defined without a previous declaration. | |||
14410 | // This warning is issued only if the definition itself does not provide | |||
14411 | // a prototype. Only K&R definitions do not provide a prototype. | |||
14412 | if (!FD->hasWrittenPrototype()) { | |||
14413 | TypeSourceInfo *TI = FD->getTypeSourceInfo(); | |||
14414 | TypeLoc TL = TI->getTypeLoc(); | |||
14415 | FunctionTypeLoc FTL = TL.getAsAdjusted<FunctionTypeLoc>(); | |||
14416 | Diag(FTL.getLParenLoc(), diag::warn_strict_prototypes) << 2; | |||
14417 | } | |||
14418 | } | |||
14419 | ||||
14420 | // Warn on CPUDispatch with an actual body. | |||
14421 | if (FD->isMultiVersion() && FD->hasAttr<CPUDispatchAttr>() && Body) | |||
14422 | if (const auto *CmpndBody = dyn_cast<CompoundStmt>(Body)) | |||
14423 | if (!CmpndBody->body_empty()) | |||
14424 | Diag(CmpndBody->body_front()->getBeginLoc(), | |||
14425 | diag::warn_dispatch_body_ignored); | |||
14426 | ||||
14427 | if (auto *MD = dyn_cast<CXXMethodDecl>(FD)) { | |||
14428 | const CXXMethodDecl *KeyFunction; | |||
14429 | if (MD->isOutOfLine() && (MD = MD->getCanonicalDecl()) && | |||
14430 | MD->isVirtual() && | |||
14431 | (KeyFunction = Context.getCurrentKeyFunction(MD->getParent())) && | |||
14432 | MD == KeyFunction->getCanonicalDecl()) { | |||
14433 | // Update the key-function state if necessary for this ABI. | |||
14434 | if (FD->isInlined() && | |||
14435 | !Context.getTargetInfo().getCXXABI().canKeyFunctionBeInline()) { | |||
14436 | Context.setNonKeyFunction(MD); | |||
14437 | ||||
14438 | // If the newly-chosen key function is already defined, then we | |||
14439 | // need to mark the vtable as used retroactively. | |||
14440 | KeyFunction = Context.getCurrentKeyFunction(MD->getParent()); | |||
14441 | const FunctionDecl *Definition; | |||
14442 | if (KeyFunction && KeyFunction->isDefined(Definition)) | |||
14443 | MarkVTableUsed(Definition->getLocation(), MD->getParent(), true); | |||
14444 | } else { | |||
14445 | // We just defined they key function; mark the vtable as used. | |||
14446 | MarkVTableUsed(FD->getLocation(), MD->getParent(), true); | |||
14447 | } | |||
14448 | } | |||
14449 | } | |||
14450 | ||||
14451 | assert((FD == getCurFunctionDecl() || getCurLambda()->CallOperator == FD) &&(((FD == getCurFunctionDecl() || getCurLambda()->CallOperator == FD) && "Function parsing confused") ? static_cast <void> (0) : __assert_fail ("(FD == getCurFunctionDecl() || getCurLambda()->CallOperator == FD) && \"Function parsing confused\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14452, __PRETTY_FUNCTION__)) | |||
14452 | "Function parsing confused")(((FD == getCurFunctionDecl() || getCurLambda()->CallOperator == FD) && "Function parsing confused") ? static_cast <void> (0) : __assert_fail ("(FD == getCurFunctionDecl() || getCurLambda()->CallOperator == FD) && \"Function parsing confused\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14452, __PRETTY_FUNCTION__)); | |||
14453 | } else if (ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(dcl)) { | |||
14454 | assert(MD == getCurMethodDecl() && "Method parsing confused")((MD == getCurMethodDecl() && "Method parsing confused" ) ? static_cast<void> (0) : __assert_fail ("MD == getCurMethodDecl() && \"Method parsing confused\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14454, __PRETTY_FUNCTION__)); | |||
14455 | MD->setBody(Body); | |||
14456 | if (!MD->isInvalidDecl()) { | |||
14457 | DiagnoseSizeOfParametersAndReturnValue(MD->parameters(), | |||
14458 | MD->getReturnType(), MD); | |||
14459 | ||||
14460 | if (Body) | |||
14461 | computeNRVO(Body, FSI); | |||
14462 | } | |||
14463 | if (FSI->ObjCShouldCallSuper) { | |||
14464 | Diag(MD->getEndLoc(), diag::warn_objc_missing_super_call) | |||
14465 | << MD->getSelector().getAsString(); | |||
14466 | FSI->ObjCShouldCallSuper = false; | |||
14467 | } | |||
14468 | if (FSI->ObjCWarnForNoDesignatedInitChain) { | |||
14469 | const ObjCMethodDecl *InitMethod = nullptr; | |||
14470 | bool isDesignated = | |||
14471 | MD->isDesignatedInitializerForTheInterface(&InitMethod); | |||
14472 | assert(isDesignated && InitMethod)((isDesignated && InitMethod) ? static_cast<void> (0) : __assert_fail ("isDesignated && InitMethod", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14472, __PRETTY_FUNCTION__)); | |||
14473 | (void)isDesignated; | |||
14474 | ||||
14475 | auto superIsNSObject = [&](const ObjCMethodDecl *MD) { | |||
14476 | auto IFace = MD->getClassInterface(); | |||
14477 | if (!IFace) | |||
14478 | return false; | |||
14479 | auto SuperD = IFace->getSuperClass(); | |||
14480 | if (!SuperD) | |||
14481 | return false; | |||
14482 | return SuperD->getIdentifier() == | |||
14483 | NSAPIObj->getNSClassId(NSAPI::ClassId_NSObject); | |||
14484 | }; | |||
14485 | // Don't issue this warning for unavailable inits or direct subclasses | |||
14486 | // of NSObject. | |||
14487 | if (!MD->isUnavailable() && !superIsNSObject(MD)) { | |||
14488 | Diag(MD->getLocation(), | |||
14489 | diag::warn_objc_designated_init_missing_super_call); | |||
14490 | Diag(InitMethod->getLocation(), | |||
14491 | diag::note_objc_designated_init_marked_here); | |||
14492 | } | |||
14493 | FSI->ObjCWarnForNoDesignatedInitChain = false; | |||
14494 | } | |||
14495 | if (FSI->ObjCWarnForNoInitDelegation) { | |||
14496 | // Don't issue this warning for unavaialable inits. | |||
14497 | if (!MD->isUnavailable()) | |||
14498 | Diag(MD->getLocation(), | |||
14499 | diag::warn_objc_secondary_init_missing_init_call); | |||
14500 | FSI->ObjCWarnForNoInitDelegation = false; | |||
14501 | } | |||
14502 | ||||
14503 | diagnoseImplicitlyRetainedSelf(*this); | |||
14504 | } else { | |||
14505 | // Parsing the function declaration failed in some way. Pop the fake scope | |||
14506 | // we pushed on. | |||
14507 | PopFunctionScopeInfo(ActivePolicy, dcl); | |||
14508 | return nullptr; | |||
14509 | } | |||
14510 | ||||
14511 | if (Body && FSI->HasPotentialAvailabilityViolations) | |||
14512 | DiagnoseUnguardedAvailabilityViolations(dcl); | |||
14513 | ||||
14514 | assert(!FSI->ObjCShouldCallSuper &&((!FSI->ObjCShouldCallSuper && "This should only be set for ObjC methods, which should have been " "handled in the block above.") ? static_cast<void> (0) : __assert_fail ("!FSI->ObjCShouldCallSuper && \"This should only be set for ObjC methods, which should have been \" \"handled in the block above.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14516, __PRETTY_FUNCTION__)) | |||
14515 | "This should only be set for ObjC methods, which should have been "((!FSI->ObjCShouldCallSuper && "This should only be set for ObjC methods, which should have been " "handled in the block above.") ? static_cast<void> (0) : __assert_fail ("!FSI->ObjCShouldCallSuper && \"This should only be set for ObjC methods, which should have been \" \"handled in the block above.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14516, __PRETTY_FUNCTION__)) | |||
14516 | "handled in the block above.")((!FSI->ObjCShouldCallSuper && "This should only be set for ObjC methods, which should have been " "handled in the block above.") ? static_cast<void> (0) : __assert_fail ("!FSI->ObjCShouldCallSuper && \"This should only be set for ObjC methods, which should have been \" \"handled in the block above.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14516, __PRETTY_FUNCTION__)); | |||
14517 | ||||
14518 | // Verify and clean out per-function state. | |||
14519 | if (Body && (!FD || !FD->isDefaulted())) { | |||
14520 | // C++ constructors that have function-try-blocks can't have return | |||
14521 | // statements in the handlers of that block. (C++ [except.handle]p14) | |||
14522 | // Verify this. | |||
14523 | if (FD && isa<CXXConstructorDecl>(FD) && isa<CXXTryStmt>(Body)) | |||
14524 | DiagnoseReturnInConstructorExceptionHandler(cast<CXXTryStmt>(Body)); | |||
14525 | ||||
14526 | // Verify that gotos and switch cases don't jump into scopes illegally. | |||
14527 | if (FSI->NeedsScopeChecking() && | |||
14528 | !PP.isCodeCompletionEnabled()) | |||
14529 | DiagnoseInvalidJumps(Body); | |||
14530 | ||||
14531 | if (CXXDestructorDecl *Destructor = dyn_cast<CXXDestructorDecl>(dcl)) { | |||
14532 | if (!Destructor->getParent()->isDependentType()) | |||
14533 | CheckDestructor(Destructor); | |||
14534 | ||||
14535 | MarkBaseAndMemberDestructorsReferenced(Destructor->getLocation(), | |||
14536 | Destructor->getParent()); | |||
14537 | } | |||
14538 | ||||
14539 | // If any errors have occurred, clear out any temporaries that may have | |||
14540 | // been leftover. This ensures that these temporaries won't be picked up for | |||
14541 | // deletion in some later function. | |||
14542 | if (hasUncompilableErrorOccurred() || | |||
14543 | getDiagnostics().getSuppressAllDiagnostics()) { | |||
14544 | DiscardCleanupsInEvaluationContext(); | |||
14545 | } | |||
14546 | if (!hasUncompilableErrorOccurred() && | |||
14547 | !isa<FunctionTemplateDecl>(dcl)) { | |||
14548 | // Since the body is valid, issue any analysis-based warnings that are | |||
14549 | // enabled. | |||
14550 | ActivePolicy = &WP; | |||
14551 | } | |||
14552 | ||||
14553 | if (!IsInstantiation && FD && FD->isConstexpr() && !FD->isInvalidDecl() && | |||
14554 | !CheckConstexprFunctionDefinition(FD, CheckConstexprKind::Diagnose)) | |||
14555 | FD->setInvalidDecl(); | |||
14556 | ||||
14557 | if (FD && FD->hasAttr<NakedAttr>()) { | |||
14558 | for (const Stmt *S : Body->children()) { | |||
14559 | // Allow local register variables without initializer as they don't | |||
14560 | // require prologue. | |||
14561 | bool RegisterVariables = false; | |||
14562 | if (auto *DS = dyn_cast<DeclStmt>(S)) { | |||
14563 | for (const auto *Decl : DS->decls()) { | |||
14564 | if (const auto *Var = dyn_cast<VarDecl>(Decl)) { | |||
14565 | RegisterVariables = | |||
14566 | Var->hasAttr<AsmLabelAttr>() && !Var->hasInit(); | |||
14567 | if (!RegisterVariables) | |||
14568 | break; | |||
14569 | } | |||
14570 | } | |||
14571 | } | |||
14572 | if (RegisterVariables) | |||
14573 | continue; | |||
14574 | if (!isa<AsmStmt>(S) && !isa<NullStmt>(S)) { | |||
14575 | Diag(S->getBeginLoc(), diag::err_non_asm_stmt_in_naked_function); | |||
14576 | Diag(FD->getAttr<NakedAttr>()->getLocation(), diag::note_attribute); | |||
14577 | FD->setInvalidDecl(); | |||
14578 | break; | |||
14579 | } | |||
14580 | } | |||
14581 | } | |||
14582 | ||||
14583 | assert(ExprCleanupObjects.size() ==((ExprCleanupObjects.size() == ExprEvalContexts.back().NumCleanupObjects && "Leftover temporaries in function") ? static_cast <void> (0) : __assert_fail ("ExprCleanupObjects.size() == ExprEvalContexts.back().NumCleanupObjects && \"Leftover temporaries in function\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14585, __PRETTY_FUNCTION__)) | |||
14584 | ExprEvalContexts.back().NumCleanupObjects &&((ExprCleanupObjects.size() == ExprEvalContexts.back().NumCleanupObjects && "Leftover temporaries in function") ? static_cast <void> (0) : __assert_fail ("ExprCleanupObjects.size() == ExprEvalContexts.back().NumCleanupObjects && \"Leftover temporaries in function\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14585, __PRETTY_FUNCTION__)) | |||
14585 | "Leftover temporaries in function")((ExprCleanupObjects.size() == ExprEvalContexts.back().NumCleanupObjects && "Leftover temporaries in function") ? static_cast <void> (0) : __assert_fail ("ExprCleanupObjects.size() == ExprEvalContexts.back().NumCleanupObjects && \"Leftover temporaries in function\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14585, __PRETTY_FUNCTION__)); | |||
14586 | assert(!Cleanup.exprNeedsCleanups() && "Unaccounted cleanups in function")((!Cleanup.exprNeedsCleanups() && "Unaccounted cleanups in function" ) ? static_cast<void> (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"Unaccounted cleanups in function\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14586, __PRETTY_FUNCTION__)); | |||
14587 | assert(MaybeODRUseExprs.empty() &&((MaybeODRUseExprs.empty() && "Leftover expressions for odr-use checking" ) ? static_cast<void> (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"Leftover expressions for odr-use checking\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14588, __PRETTY_FUNCTION__)) | |||
14588 | "Leftover expressions for odr-use checking")((MaybeODRUseExprs.empty() && "Leftover expressions for odr-use checking" ) ? static_cast<void> (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"Leftover expressions for odr-use checking\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14588, __PRETTY_FUNCTION__)); | |||
14589 | } | |||
14590 | ||||
14591 | if (!IsInstantiation) | |||
14592 | PopDeclContext(); | |||
14593 | ||||
14594 | PopFunctionScopeInfo(ActivePolicy, dcl); | |||
14595 | // If any errors have occurred, clear out any temporaries that may have | |||
14596 | // been leftover. This ensures that these temporaries won't be picked up for | |||
14597 | // deletion in some later function. | |||
14598 | if (hasUncompilableErrorOccurred()) { | |||
14599 | DiscardCleanupsInEvaluationContext(); | |||
14600 | } | |||
14601 | ||||
14602 | if (FD && (LangOpts.OpenMP || LangOpts.CUDA || LangOpts.SYCLIsDevice)) { | |||
14603 | auto ES = getEmissionStatus(FD); | |||
14604 | if (ES == Sema::FunctionEmissionStatus::Emitted || | |||
14605 | ES == Sema::FunctionEmissionStatus::Unknown) | |||
14606 | DeclsToCheckForDeferredDiags.push_back(FD); | |||
14607 | } | |||
14608 | ||||
14609 | return dcl; | |||
14610 | } | |||
14611 | ||||
14612 | /// When we finish delayed parsing of an attribute, we must attach it to the | |||
14613 | /// relevant Decl. | |||
14614 | void Sema::ActOnFinishDelayedAttribute(Scope *S, Decl *D, | |||
14615 | ParsedAttributes &Attrs) { | |||
14616 | // Always attach attributes to the underlying decl. | |||
14617 | if (TemplateDecl *TD = dyn_cast<TemplateDecl>(D)) | |||
14618 | D = TD->getTemplatedDecl(); | |||
14619 | ProcessDeclAttributeList(S, D, Attrs); | |||
14620 | ||||
14621 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(D)) | |||
14622 | if (Method->isStatic()) | |||
14623 | checkThisInStaticMemberFunctionAttributes(Method); | |||
14624 | } | |||
14625 | ||||
14626 | /// ImplicitlyDefineFunction - An undeclared identifier was used in a function | |||
14627 | /// call, forming a call to an implicitly defined function (per C99 6.5.1p2). | |||
14628 | NamedDecl *Sema::ImplicitlyDefineFunction(SourceLocation Loc, | |||
14629 | IdentifierInfo &II, Scope *S) { | |||
14630 | // Find the scope in which the identifier is injected and the corresponding | |||
14631 | // DeclContext. | |||
14632 | // FIXME: C89 does not say what happens if there is no enclosing block scope. | |||
14633 | // In that case, we inject the declaration into the translation unit scope | |||
14634 | // instead. | |||
14635 | Scope *BlockScope = S; | |||
14636 | while (!BlockScope->isCompoundStmtScope() && BlockScope->getParent()) | |||
14637 | BlockScope = BlockScope->getParent(); | |||
14638 | ||||
14639 | Scope *ContextScope = BlockScope; | |||
14640 | while (!ContextScope->getEntity()) | |||
14641 | ContextScope = ContextScope->getParent(); | |||
14642 | ContextRAII SavedContext(*this, ContextScope->getEntity()); | |||
14643 | ||||
14644 | // Before we produce a declaration for an implicitly defined | |||
14645 | // function, see whether there was a locally-scoped declaration of | |||
14646 | // this name as a function or variable. If so, use that | |||
14647 | // (non-visible) declaration, and complain about it. | |||
14648 | NamedDecl *ExternCPrev = findLocallyScopedExternCDecl(&II); | |||
14649 | if (ExternCPrev) { | |||
14650 | // We still need to inject the function into the enclosing block scope so | |||
14651 | // that later (non-call) uses can see it. | |||
14652 | PushOnScopeChains(ExternCPrev, BlockScope, /*AddToContext*/false); | |||
14653 | ||||
14654 | // C89 footnote 38: | |||
14655 | // If in fact it is not defined as having type "function returning int", | |||
14656 | // the behavior is undefined. | |||
14657 | if (!isa<FunctionDecl>(ExternCPrev) || | |||
14658 | !Context.typesAreCompatible( | |||
14659 | cast<FunctionDecl>(ExternCPrev)->getType(), | |||
14660 | Context.getFunctionNoProtoType(Context.IntTy))) { | |||
14661 | Diag(Loc, diag::ext_use_out_of_scope_declaration) | |||
14662 | << ExternCPrev << !getLangOpts().C99; | |||
14663 | Diag(ExternCPrev->getLocation(), diag::note_previous_declaration); | |||
14664 | return ExternCPrev; | |||
14665 | } | |||
14666 | } | |||
14667 | ||||
14668 | // Extension in C99. Legal in C90, but warn about it. | |||
14669 | unsigned diag_id; | |||
14670 | if (II.getName().startswith("__builtin_")) | |||
14671 | diag_id = diag::warn_builtin_unknown; | |||
14672 | // OpenCL v2.0 s6.9.u - Implicit function declaration is not supported. | |||
14673 | else if (getLangOpts().OpenCL) | |||
14674 | diag_id = diag::err_opencl_implicit_function_decl; | |||
14675 | else if (getLangOpts().C99) | |||
14676 | diag_id = diag::ext_implicit_function_decl; | |||
14677 | else | |||
14678 | diag_id = diag::warn_implicit_function_decl; | |||
14679 | Diag(Loc, diag_id) << &II; | |||
14680 | ||||
14681 | // If we found a prior declaration of this function, don't bother building | |||
14682 | // another one. We've already pushed that one into scope, so there's nothing | |||
14683 | // more to do. | |||
14684 | if (ExternCPrev) | |||
14685 | return ExternCPrev; | |||
14686 | ||||
14687 | // Because typo correction is expensive, only do it if the implicit | |||
14688 | // function declaration is going to be treated as an error. | |||
14689 | if (Diags.getDiagnosticLevel(diag_id, Loc) >= DiagnosticsEngine::Error) { | |||
14690 | TypoCorrection Corrected; | |||
14691 | DeclFilterCCC<FunctionDecl> CCC{}; | |||
14692 | if (S && (Corrected = | |||
14693 | CorrectTypo(DeclarationNameInfo(&II, Loc), LookupOrdinaryName, | |||
14694 | S, nullptr, CCC, CTK_NonError))) | |||
14695 | diagnoseTypo(Corrected, PDiag(diag::note_function_suggestion), | |||
14696 | /*ErrorRecovery*/false); | |||
14697 | } | |||
14698 | ||||
14699 | // Set a Declarator for the implicit definition: int foo(); | |||
14700 | const char *Dummy; | |||
14701 | AttributeFactory attrFactory; | |||
14702 | DeclSpec DS(attrFactory); | |||
14703 | unsigned DiagID; | |||
14704 | bool Error = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, Dummy, DiagID, | |||
14705 | Context.getPrintingPolicy()); | |||
14706 | (void)Error; // Silence warning. | |||
14707 | assert(!Error && "Error setting up implicit decl!")((!Error && "Error setting up implicit decl!") ? static_cast <void> (0) : __assert_fail ("!Error && \"Error setting up implicit decl!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14707, __PRETTY_FUNCTION__)); | |||
14708 | SourceLocation NoLoc; | |||
14709 | Declarator D(DS, DeclaratorContext::Block); | |||
14710 | D.AddTypeInfo(DeclaratorChunk::getFunction(/*HasProto=*/false, | |||
14711 | /*IsAmbiguous=*/false, | |||
14712 | /*LParenLoc=*/NoLoc, | |||
14713 | /*Params=*/nullptr, | |||
14714 | /*NumParams=*/0, | |||
14715 | /*EllipsisLoc=*/NoLoc, | |||
14716 | /*RParenLoc=*/NoLoc, | |||
14717 | /*RefQualifierIsLvalueRef=*/true, | |||
14718 | /*RefQualifierLoc=*/NoLoc, | |||
14719 | /*MutableLoc=*/NoLoc, EST_None, | |||
14720 | /*ESpecRange=*/SourceRange(), | |||
14721 | /*Exceptions=*/nullptr, | |||
14722 | /*ExceptionRanges=*/nullptr, | |||
14723 | /*NumExceptions=*/0, | |||
14724 | /*NoexceptExpr=*/nullptr, | |||
14725 | /*ExceptionSpecTokens=*/nullptr, | |||
14726 | /*DeclsInPrototype=*/None, Loc, | |||
14727 | Loc, D), | |||
14728 | std::move(DS.getAttributes()), SourceLocation()); | |||
14729 | D.SetIdentifier(&II, Loc); | |||
14730 | ||||
14731 | // Insert this function into the enclosing block scope. | |||
14732 | FunctionDecl *FD = cast<FunctionDecl>(ActOnDeclarator(BlockScope, D)); | |||
14733 | FD->setImplicit(); | |||
14734 | ||||
14735 | AddKnownFunctionAttributes(FD); | |||
14736 | ||||
14737 | return FD; | |||
14738 | } | |||
14739 | ||||
14740 | /// If this function is a C++ replaceable global allocation function | |||
14741 | /// (C++2a [basic.stc.dynamic.allocation], C++2a [new.delete]), | |||
14742 | /// adds any function attributes that we know a priori based on the standard. | |||
14743 | /// | |||
14744 | /// We need to check for duplicate attributes both here and where user-written | |||
14745 | /// attributes are applied to declarations. | |||
14746 | void Sema::AddKnownFunctionAttributesForReplaceableGlobalAllocationFunction( | |||
14747 | FunctionDecl *FD) { | |||
14748 | if (FD->isInvalidDecl()) | |||
14749 | return; | |||
14750 | ||||
14751 | if (FD->getDeclName().getCXXOverloadedOperator() != OO_New && | |||
14752 | FD->getDeclName().getCXXOverloadedOperator() != OO_Array_New) | |||
14753 | return; | |||
14754 | ||||
14755 | Optional<unsigned> AlignmentParam; | |||
14756 | bool IsNothrow = false; | |||
14757 | if (!FD->isReplaceableGlobalAllocationFunction(&AlignmentParam, &IsNothrow)) | |||
14758 | return; | |||
14759 | ||||
14760 | // C++2a [basic.stc.dynamic.allocation]p4: | |||
14761 | // An allocation function that has a non-throwing exception specification | |||
14762 | // indicates failure by returning a null pointer value. Any other allocation | |||
14763 | // function never returns a null pointer value and indicates failure only by | |||
14764 | // throwing an exception [...] | |||
14765 | if (!IsNothrow && !FD->hasAttr<ReturnsNonNullAttr>()) | |||
14766 | FD->addAttr(ReturnsNonNullAttr::CreateImplicit(Context, FD->getLocation())); | |||
14767 | ||||
14768 | // C++2a [basic.stc.dynamic.allocation]p2: | |||
14769 | // An allocation function attempts to allocate the requested amount of | |||
14770 | // storage. [...] If the request succeeds, the value returned by a | |||
14771 | // replaceable allocation function is a [...] pointer value p0 different | |||
14772 | // from any previously returned value p1 [...] | |||
14773 | // | |||
14774 | // However, this particular information is being added in codegen, | |||
14775 | // because there is an opt-out switch for it (-fno-assume-sane-operator-new) | |||
14776 | ||||
14777 | // C++2a [basic.stc.dynamic.allocation]p2: | |||
14778 | // An allocation function attempts to allocate the requested amount of | |||
14779 | // storage. If it is successful, it returns the address of the start of a | |||
14780 | // block of storage whose length in bytes is at least as large as the | |||
14781 | // requested size. | |||
14782 | if (!FD->hasAttr<AllocSizeAttr>()) { | |||
14783 | FD->addAttr(AllocSizeAttr::CreateImplicit( | |||
14784 | Context, /*ElemSizeParam=*/ParamIdx(1, FD), | |||
14785 | /*NumElemsParam=*/ParamIdx(), FD->getLocation())); | |||
14786 | } | |||
14787 | ||||
14788 | // C++2a [basic.stc.dynamic.allocation]p3: | |||
14789 | // For an allocation function [...], the pointer returned on a successful | |||
14790 | // call shall represent the address of storage that is aligned as follows: | |||
14791 | // (3.1) If the allocation function takes an argument of type | |||
14792 | // std​::​align_Âval_Ât, the storage will have the alignment | |||
14793 | // specified by the value of this argument. | |||
14794 | if (AlignmentParam.hasValue() && !FD->hasAttr<AllocAlignAttr>()) { | |||
14795 | FD->addAttr(AllocAlignAttr::CreateImplicit( | |||
14796 | Context, ParamIdx(AlignmentParam.getValue(), FD), FD->getLocation())); | |||
14797 | } | |||
14798 | ||||
14799 | // FIXME: | |||
14800 | // C++2a [basic.stc.dynamic.allocation]p3: | |||
14801 | // For an allocation function [...], the pointer returned on a successful | |||
14802 | // call shall represent the address of storage that is aligned as follows: | |||
14803 | // (3.2) Otherwise, if the allocation function is named operator new[], | |||
14804 | // the storage is aligned for any object that does not have | |||
14805 | // new-extended alignment ([basic.align]) and is no larger than the | |||
14806 | // requested size. | |||
14807 | // (3.3) Otherwise, the storage is aligned for any object that does not | |||
14808 | // have new-extended alignment and is of the requested size. | |||
14809 | } | |||
14810 | ||||
14811 | /// Adds any function attributes that we know a priori based on | |||
14812 | /// the declaration of this function. | |||
14813 | /// | |||
14814 | /// These attributes can apply both to implicitly-declared builtins | |||
14815 | /// (like __builtin___printf_chk) or to library-declared functions | |||
14816 | /// like NSLog or printf. | |||
14817 | /// | |||
14818 | /// We need to check for duplicate attributes both here and where user-written | |||
14819 | /// attributes are applied to declarations. | |||
14820 | void Sema::AddKnownFunctionAttributes(FunctionDecl *FD) { | |||
14821 | if (FD->isInvalidDecl()) | |||
14822 | return; | |||
14823 | ||||
14824 | // If this is a built-in function, map its builtin attributes to | |||
14825 | // actual attributes. | |||
14826 | if (unsigned BuiltinID = FD->getBuiltinID()) { | |||
14827 | // Handle printf-formatting attributes. | |||
14828 | unsigned FormatIdx; | |||
14829 | bool HasVAListArg; | |||
14830 | if (Context.BuiltinInfo.isPrintfLike(BuiltinID, FormatIdx, HasVAListArg)) { | |||
14831 | if (!FD->hasAttr<FormatAttr>()) { | |||
14832 | const char *fmt = "printf"; | |||
14833 | unsigned int NumParams = FD->getNumParams(); | |||
14834 | if (FormatIdx < NumParams && // NumParams may be 0 (e.g. vfprintf) | |||
14835 | FD->getParamDecl(FormatIdx)->getType()->isObjCObjectPointerType()) | |||
14836 | fmt = "NSString"; | |||
14837 | FD->addAttr(FormatAttr::CreateImplicit(Context, | |||
14838 | &Context.Idents.get(fmt), | |||
14839 | FormatIdx+1, | |||
14840 | HasVAListArg ? 0 : FormatIdx+2, | |||
14841 | FD->getLocation())); | |||
14842 | } | |||
14843 | } | |||
14844 | if (Context.BuiltinInfo.isScanfLike(BuiltinID, FormatIdx, | |||
14845 | HasVAListArg)) { | |||
14846 | if (!FD->hasAttr<FormatAttr>()) | |||
14847 | FD->addAttr(FormatAttr::CreateImplicit(Context, | |||
14848 | &Context.Idents.get("scanf"), | |||
14849 | FormatIdx+1, | |||
14850 | HasVAListArg ? 0 : FormatIdx+2, | |||
14851 | FD->getLocation())); | |||
14852 | } | |||
14853 | ||||
14854 | // Handle automatically recognized callbacks. | |||
14855 | SmallVector<int, 4> Encoding; | |||
14856 | if (!FD->hasAttr<CallbackAttr>() && | |||
14857 | Context.BuiltinInfo.performsCallback(BuiltinID, Encoding)) | |||
14858 | FD->addAttr(CallbackAttr::CreateImplicit( | |||
14859 | Context, Encoding.data(), Encoding.size(), FD->getLocation())); | |||
14860 | ||||
14861 | // Mark const if we don't care about errno and that is the only thing | |||
14862 | // preventing the function from being const. This allows IRgen to use LLVM | |||
14863 | // intrinsics for such functions. | |||
14864 | if (!getLangOpts().MathErrno && !FD->hasAttr<ConstAttr>() && | |||
14865 | Context.BuiltinInfo.isConstWithoutErrno(BuiltinID)) | |||
14866 | FD->addAttr(ConstAttr::CreateImplicit(Context, FD->getLocation())); | |||
14867 | ||||
14868 | // We make "fma" on some platforms const because we know it does not set | |||
14869 | // errno in those environments even though it could set errno based on the | |||
14870 | // C standard. | |||
14871 | const llvm::Triple &Trip = Context.getTargetInfo().getTriple(); | |||
14872 | if ((Trip.isGNUEnvironment() || Trip.isAndroid() || Trip.isOSMSVCRT()) && | |||
14873 | !FD->hasAttr<ConstAttr>()) { | |||
14874 | switch (BuiltinID) { | |||
14875 | case Builtin::BI__builtin_fma: | |||
14876 | case Builtin::BI__builtin_fmaf: | |||
14877 | case Builtin::BI__builtin_fmal: | |||
14878 | case Builtin::BIfma: | |||
14879 | case Builtin::BIfmaf: | |||
14880 | case Builtin::BIfmal: | |||
14881 | FD->addAttr(ConstAttr::CreateImplicit(Context, FD->getLocation())); | |||
14882 | break; | |||
14883 | default: | |||
14884 | break; | |||
14885 | } | |||
14886 | } | |||
14887 | ||||
14888 | if (Context.BuiltinInfo.isReturnsTwice(BuiltinID) && | |||
14889 | !FD->hasAttr<ReturnsTwiceAttr>()) | |||
14890 | FD->addAttr(ReturnsTwiceAttr::CreateImplicit(Context, | |||
14891 | FD->getLocation())); | |||
14892 | if (Context.BuiltinInfo.isNoThrow(BuiltinID) && !FD->hasAttr<NoThrowAttr>()) | |||
14893 | FD->addAttr(NoThrowAttr::CreateImplicit(Context, FD->getLocation())); | |||
14894 | if (Context.BuiltinInfo.isPure(BuiltinID) && !FD->hasAttr<PureAttr>()) | |||
14895 | FD->addAttr(PureAttr::CreateImplicit(Context, FD->getLocation())); | |||
14896 | if (Context.BuiltinInfo.isConst(BuiltinID) && !FD->hasAttr<ConstAttr>()) | |||
14897 | FD->addAttr(ConstAttr::CreateImplicit(Context, FD->getLocation())); | |||
14898 | if (getLangOpts().CUDA && Context.BuiltinInfo.isTSBuiltin(BuiltinID) && | |||
14899 | !FD->hasAttr<CUDADeviceAttr>() && !FD->hasAttr<CUDAHostAttr>()) { | |||
14900 | // Add the appropriate attribute, depending on the CUDA compilation mode | |||
14901 | // and which target the builtin belongs to. For example, during host | |||
14902 | // compilation, aux builtins are __device__, while the rest are __host__. | |||
14903 | if (getLangOpts().CUDAIsDevice != | |||
14904 | Context.BuiltinInfo.isAuxBuiltinID(BuiltinID)) | |||
14905 | FD->addAttr(CUDADeviceAttr::CreateImplicit(Context, FD->getLocation())); | |||
14906 | else | |||
14907 | FD->addAttr(CUDAHostAttr::CreateImplicit(Context, FD->getLocation())); | |||
14908 | } | |||
14909 | } | |||
14910 | ||||
14911 | AddKnownFunctionAttributesForReplaceableGlobalAllocationFunction(FD); | |||
14912 | ||||
14913 | // If C++ exceptions are enabled but we are told extern "C" functions cannot | |||
14914 | // throw, add an implicit nothrow attribute to any extern "C" function we come | |||
14915 | // across. | |||
14916 | if (getLangOpts().CXXExceptions && getLangOpts().ExternCNoUnwind && | |||
14917 | FD->isExternC() && !FD->hasAttr<NoThrowAttr>()) { | |||
14918 | const auto *FPT = FD->getType()->getAs<FunctionProtoType>(); | |||
14919 | if (!FPT || FPT->getExceptionSpecType() == EST_None) | |||
14920 | FD->addAttr(NoThrowAttr::CreateImplicit(Context, FD->getLocation())); | |||
14921 | } | |||
14922 | ||||
14923 | IdentifierInfo *Name = FD->getIdentifier(); | |||
14924 | if (!Name) | |||
14925 | return; | |||
14926 | if ((!getLangOpts().CPlusPlus && | |||
14927 | FD->getDeclContext()->isTranslationUnit()) || | |||
14928 | (isa<LinkageSpecDecl>(FD->getDeclContext()) && | |||
14929 | cast<LinkageSpecDecl>(FD->getDeclContext())->getLanguage() == | |||
14930 | LinkageSpecDecl::lang_c)) { | |||
14931 | // Okay: this could be a libc/libm/Objective-C function we know | |||
14932 | // about. | |||
14933 | } else | |||
14934 | return; | |||
14935 | ||||
14936 | if (Name->isStr("asprintf") || Name->isStr("vasprintf")) { | |||
14937 | // FIXME: asprintf and vasprintf aren't C99 functions. Should they be | |||
14938 | // target-specific builtins, perhaps? | |||
14939 | if (!FD->hasAttr<FormatAttr>()) | |||
14940 | FD->addAttr(FormatAttr::CreateImplicit(Context, | |||
14941 | &Context.Idents.get("printf"), 2, | |||
14942 | Name->isStr("vasprintf") ? 0 : 3, | |||
14943 | FD->getLocation())); | |||
14944 | } | |||
14945 | ||||
14946 | if (Name->isStr("__CFStringMakeConstantString")) { | |||
14947 | // We already have a __builtin___CFStringMakeConstantString, | |||
14948 | // but builds that use -fno-constant-cfstrings don't go through that. | |||
14949 | if (!FD->hasAttr<FormatArgAttr>()) | |||
14950 | FD->addAttr(FormatArgAttr::CreateImplicit(Context, ParamIdx(1, FD), | |||
14951 | FD->getLocation())); | |||
14952 | } | |||
14953 | } | |||
14954 | ||||
14955 | TypedefDecl *Sema::ParseTypedefDecl(Scope *S, Declarator &D, QualType T, | |||
14956 | TypeSourceInfo *TInfo) { | |||
14957 | assert(D.getIdentifier() && "Wrong callback for declspec without declarator")((D.getIdentifier() && "Wrong callback for declspec without declarator" ) ? static_cast<void> (0) : __assert_fail ("D.getIdentifier() && \"Wrong callback for declspec without declarator\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14957, __PRETTY_FUNCTION__)); | |||
14958 | assert(!T.isNull() && "GetTypeForDeclarator() returned null type")((!T.isNull() && "GetTypeForDeclarator() returned null type" ) ? static_cast<void> (0) : __assert_fail ("!T.isNull() && \"GetTypeForDeclarator() returned null type\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14958, __PRETTY_FUNCTION__)); | |||
14959 | ||||
14960 | if (!TInfo) { | |||
14961 | assert(D.isInvalidType() && "no declarator info for valid type")((D.isInvalidType() && "no declarator info for valid type" ) ? static_cast<void> (0) : __assert_fail ("D.isInvalidType() && \"no declarator info for valid type\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 14961, __PRETTY_FUNCTION__)); | |||
14962 | TInfo = Context.getTrivialTypeSourceInfo(T); | |||
14963 | } | |||
14964 | ||||
14965 | // Scope manipulation handled by caller. | |||
14966 | TypedefDecl *NewTD = | |||
14967 | TypedefDecl::Create(Context, CurContext, D.getBeginLoc(), | |||
14968 | D.getIdentifierLoc(), D.getIdentifier(), TInfo); | |||
14969 | ||||
14970 | // Bail out immediately if we have an invalid declaration. | |||
14971 | if (D.isInvalidType()) { | |||
14972 | NewTD->setInvalidDecl(); | |||
14973 | return NewTD; | |||
14974 | } | |||
14975 | ||||
14976 | if (D.getDeclSpec().isModulePrivateSpecified()) { | |||
14977 | if (CurContext->isFunctionOrMethod()) | |||
14978 | Diag(NewTD->getLocation(), diag::err_module_private_local) | |||
14979 | << 2 << NewTD | |||
14980 | << SourceRange(D.getDeclSpec().getModulePrivateSpecLoc()) | |||
14981 | << FixItHint::CreateRemoval( | |||
14982 | D.getDeclSpec().getModulePrivateSpecLoc()); | |||
14983 | else | |||
14984 | NewTD->setModulePrivate(); | |||
14985 | } | |||
14986 | ||||
14987 | // C++ [dcl.typedef]p8: | |||
14988 | // If the typedef declaration defines an unnamed class (or | |||
14989 | // enum), the first typedef-name declared by the declaration | |||
14990 | // to be that class type (or enum type) is used to denote the | |||
14991 | // class type (or enum type) for linkage purposes only. | |||
14992 | // We need to check whether the type was declared in the declaration. | |||
14993 | switch (D.getDeclSpec().getTypeSpecType()) { | |||
14994 | case TST_enum: | |||
14995 | case TST_struct: | |||
14996 | case TST_interface: | |||
14997 | case TST_union: | |||
14998 | case TST_class: { | |||
14999 | TagDecl *tagFromDeclSpec = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); | |||
15000 | setTagNameForLinkagePurposes(tagFromDeclSpec, NewTD); | |||
15001 | break; | |||
15002 | } | |||
15003 | ||||
15004 | default: | |||
15005 | break; | |||
15006 | } | |||
15007 | ||||
15008 | return NewTD; | |||
15009 | } | |||
15010 | ||||
15011 | /// Check that this is a valid underlying type for an enum declaration. | |||
15012 | bool Sema::CheckEnumUnderlyingType(TypeSourceInfo *TI) { | |||
15013 | SourceLocation UnderlyingLoc = TI->getTypeLoc().getBeginLoc(); | |||
15014 | QualType T = TI->getType(); | |||
15015 | ||||
15016 | if (T->isDependentType()) | |||
15017 | return false; | |||
15018 | ||||
15019 | // This doesn't use 'isIntegralType' despite the error message mentioning | |||
15020 | // integral type because isIntegralType would also allow enum types in C. | |||
15021 | if (const BuiltinType *BT = T->getAs<BuiltinType>()) | |||
15022 | if (BT->isInteger()) | |||
15023 | return false; | |||
15024 | ||||
15025 | if (T->isExtIntType()) | |||
15026 | return false; | |||
15027 | ||||
15028 | return Diag(UnderlyingLoc, diag::err_enum_invalid_underlying) << T; | |||
15029 | } | |||
15030 | ||||
15031 | /// Check whether this is a valid redeclaration of a previous enumeration. | |||
15032 | /// \return true if the redeclaration was invalid. | |||
15033 | bool Sema::CheckEnumRedeclaration(SourceLocation EnumLoc, bool IsScoped, | |||
15034 | QualType EnumUnderlyingTy, bool IsFixed, | |||
15035 | const EnumDecl *Prev) { | |||
15036 | if (IsScoped != Prev->isScoped()) { | |||
15037 | Diag(EnumLoc, diag::err_enum_redeclare_scoped_mismatch) | |||
15038 | << Prev->isScoped(); | |||
15039 | Diag(Prev->getLocation(), diag::note_previous_declaration); | |||
15040 | return true; | |||
15041 | } | |||
15042 | ||||
15043 | if (IsFixed && Prev->isFixed()) { | |||
15044 | if (!EnumUnderlyingTy->isDependentType() && | |||
15045 | !Prev->getIntegerType()->isDependentType() && | |||
15046 | !Context.hasSameUnqualifiedType(EnumUnderlyingTy, | |||
15047 | Prev->getIntegerType())) { | |||
15048 | // TODO: Highlight the underlying type of the redeclaration. | |||
15049 | Diag(EnumLoc, diag::err_enum_redeclare_type_mismatch) | |||
15050 | << EnumUnderlyingTy << Prev->getIntegerType(); | |||
15051 | Diag(Prev->getLocation(), diag::note_previous_declaration) | |||
15052 | << Prev->getIntegerTypeRange(); | |||
15053 | return true; | |||
15054 | } | |||
15055 | } else if (IsFixed != Prev->isFixed()) { | |||
15056 | Diag(EnumLoc, diag::err_enum_redeclare_fixed_mismatch) | |||
15057 | << Prev->isFixed(); | |||
15058 | Diag(Prev->getLocation(), diag::note_previous_declaration); | |||
15059 | return true; | |||
15060 | } | |||
15061 | ||||
15062 | return false; | |||
15063 | } | |||
15064 | ||||
15065 | /// Get diagnostic %select index for tag kind for | |||
15066 | /// redeclaration diagnostic message. | |||
15067 | /// WARNING: Indexes apply to particular diagnostics only! | |||
15068 | /// | |||
15069 | /// \returns diagnostic %select index. | |||
15070 | static unsigned getRedeclDiagFromTagKind(TagTypeKind Tag) { | |||
15071 | switch (Tag) { | |||
15072 | case TTK_Struct: return 0; | |||
15073 | case TTK_Interface: return 1; | |||
15074 | case TTK_Class: return 2; | |||
15075 | default: llvm_unreachable("Invalid tag kind for redecl diagnostic!")::llvm::llvm_unreachable_internal("Invalid tag kind for redecl diagnostic!" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15075); | |||
15076 | } | |||
15077 | } | |||
15078 | ||||
15079 | /// Determine if tag kind is a class-key compatible with | |||
15080 | /// class for redeclaration (class, struct, or __interface). | |||
15081 | /// | |||
15082 | /// \returns true iff the tag kind is compatible. | |||
15083 | static bool isClassCompatTagKind(TagTypeKind Tag) | |||
15084 | { | |||
15085 | return Tag == TTK_Struct || Tag == TTK_Class || Tag == TTK_Interface; | |||
15086 | } | |||
15087 | ||||
15088 | Sema::NonTagKind Sema::getNonTagTypeDeclKind(const Decl *PrevDecl, | |||
15089 | TagTypeKind TTK) { | |||
15090 | if (isa<TypedefDecl>(PrevDecl)) | |||
15091 | return NTK_Typedef; | |||
15092 | else if (isa<TypeAliasDecl>(PrevDecl)) | |||
15093 | return NTK_TypeAlias; | |||
15094 | else if (isa<ClassTemplateDecl>(PrevDecl)) | |||
15095 | return NTK_Template; | |||
15096 | else if (isa<TypeAliasTemplateDecl>(PrevDecl)) | |||
15097 | return NTK_TypeAliasTemplate; | |||
15098 | else if (isa<TemplateTemplateParmDecl>(PrevDecl)) | |||
15099 | return NTK_TemplateTemplateArgument; | |||
15100 | switch (TTK) { | |||
15101 | case TTK_Struct: | |||
15102 | case TTK_Interface: | |||
15103 | case TTK_Class: | |||
15104 | return getLangOpts().CPlusPlus ? NTK_NonClass : NTK_NonStruct; | |||
15105 | case TTK_Union: | |||
15106 | return NTK_NonUnion; | |||
15107 | case TTK_Enum: | |||
15108 | return NTK_NonEnum; | |||
15109 | } | |||
15110 | llvm_unreachable("invalid TTK")::llvm::llvm_unreachable_internal("invalid TTK", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15110); | |||
15111 | } | |||
15112 | ||||
15113 | /// Determine whether a tag with a given kind is acceptable | |||
15114 | /// as a redeclaration of the given tag declaration. | |||
15115 | /// | |||
15116 | /// \returns true if the new tag kind is acceptable, false otherwise. | |||
15117 | bool Sema::isAcceptableTagRedeclaration(const TagDecl *Previous, | |||
15118 | TagTypeKind NewTag, bool isDefinition, | |||
15119 | SourceLocation NewTagLoc, | |||
15120 | const IdentifierInfo *Name) { | |||
15121 | // C++ [dcl.type.elab]p3: | |||
15122 | // The class-key or enum keyword present in the | |||
15123 | // elaborated-type-specifier shall agree in kind with the | |||
15124 | // declaration to which the name in the elaborated-type-specifier | |||
15125 | // refers. This rule also applies to the form of | |||
15126 | // elaborated-type-specifier that declares a class-name or | |||
15127 | // friend class since it can be construed as referring to the | |||
15128 | // definition of the class. Thus, in any | |||
15129 | // elaborated-type-specifier, the enum keyword shall be used to | |||
15130 | // refer to an enumeration (7.2), the union class-key shall be | |||
15131 | // used to refer to a union (clause 9), and either the class or | |||
15132 | // struct class-key shall be used to refer to a class (clause 9) | |||
15133 | // declared using the class or struct class-key. | |||
15134 | TagTypeKind OldTag = Previous->getTagKind(); | |||
15135 | if (OldTag != NewTag && | |||
15136 | !(isClassCompatTagKind(OldTag) && isClassCompatTagKind(NewTag))) | |||
15137 | return false; | |||
15138 | ||||
15139 | // Tags are compatible, but we might still want to warn on mismatched tags. | |||
15140 | // Non-class tags can't be mismatched at this point. | |||
15141 | if (!isClassCompatTagKind(NewTag)) | |||
15142 | return true; | |||
15143 | ||||
15144 | // Declarations for which -Wmismatched-tags is disabled are entirely ignored | |||
15145 | // by our warning analysis. We don't want to warn about mismatches with (eg) | |||
15146 | // declarations in system headers that are designed to be specialized, but if | |||
15147 | // a user asks us to warn, we should warn if their code contains mismatched | |||
15148 | // declarations. | |||
15149 | auto IsIgnoredLoc = [&](SourceLocation Loc) { | |||
15150 | return getDiagnostics().isIgnored(diag::warn_struct_class_tag_mismatch, | |||
15151 | Loc); | |||
15152 | }; | |||
15153 | if (IsIgnoredLoc(NewTagLoc)) | |||
15154 | return true; | |||
15155 | ||||
15156 | auto IsIgnored = [&](const TagDecl *Tag) { | |||
15157 | return IsIgnoredLoc(Tag->getLocation()); | |||
15158 | }; | |||
15159 | while (IsIgnored(Previous)) { | |||
15160 | Previous = Previous->getPreviousDecl(); | |||
15161 | if (!Previous) | |||
15162 | return true; | |||
15163 | OldTag = Previous->getTagKind(); | |||
15164 | } | |||
15165 | ||||
15166 | bool isTemplate = false; | |||
15167 | if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(Previous)) | |||
15168 | isTemplate = Record->getDescribedClassTemplate(); | |||
15169 | ||||
15170 | if (inTemplateInstantiation()) { | |||
15171 | if (OldTag != NewTag) { | |||
15172 | // In a template instantiation, do not offer fix-its for tag mismatches | |||
15173 | // since they usually mess up the template instead of fixing the problem. | |||
15174 | Diag(NewTagLoc, diag::warn_struct_class_tag_mismatch) | |||
15175 | << getRedeclDiagFromTagKind(NewTag) << isTemplate << Name | |||
15176 | << getRedeclDiagFromTagKind(OldTag); | |||
15177 | // FIXME: Note previous location? | |||
15178 | } | |||
15179 | return true; | |||
15180 | } | |||
15181 | ||||
15182 | if (isDefinition) { | |||
15183 | // On definitions, check all previous tags and issue a fix-it for each | |||
15184 | // one that doesn't match the current tag. | |||
15185 | if (Previous->getDefinition()) { | |||
15186 | // Don't suggest fix-its for redefinitions. | |||
15187 | return true; | |||
15188 | } | |||
15189 | ||||
15190 | bool previousMismatch = false; | |||
15191 | for (const TagDecl *I : Previous->redecls()) { | |||
15192 | if (I->getTagKind() != NewTag) { | |||
15193 | // Ignore previous declarations for which the warning was disabled. | |||
15194 | if (IsIgnored(I)) | |||
15195 | continue; | |||
15196 | ||||
15197 | if (!previousMismatch) { | |||
15198 | previousMismatch = true; | |||
15199 | Diag(NewTagLoc, diag::warn_struct_class_previous_tag_mismatch) | |||
15200 | << getRedeclDiagFromTagKind(NewTag) << isTemplate << Name | |||
15201 | << getRedeclDiagFromTagKind(I->getTagKind()); | |||
15202 | } | |||
15203 | Diag(I->getInnerLocStart(), diag::note_struct_class_suggestion) | |||
15204 | << getRedeclDiagFromTagKind(NewTag) | |||
15205 | << FixItHint::CreateReplacement(I->getInnerLocStart(), | |||
15206 | TypeWithKeyword::getTagTypeKindName(NewTag)); | |||
15207 | } | |||
15208 | } | |||
15209 | return true; | |||
15210 | } | |||
15211 | ||||
15212 | // Identify the prevailing tag kind: this is the kind of the definition (if | |||
15213 | // there is a non-ignored definition), or otherwise the kind of the prior | |||
15214 | // (non-ignored) declaration. | |||
15215 | const TagDecl *PrevDef = Previous->getDefinition(); | |||
15216 | if (PrevDef && IsIgnored(PrevDef)) | |||
15217 | PrevDef = nullptr; | |||
15218 | const TagDecl *Redecl = PrevDef ? PrevDef : Previous; | |||
15219 | if (Redecl->getTagKind() != NewTag) { | |||
15220 | Diag(NewTagLoc, diag::warn_struct_class_tag_mismatch) | |||
15221 | << getRedeclDiagFromTagKind(NewTag) << isTemplate << Name | |||
15222 | << getRedeclDiagFromTagKind(OldTag); | |||
15223 | Diag(Redecl->getLocation(), diag::note_previous_use); | |||
15224 | ||||
15225 | // If there is a previous definition, suggest a fix-it. | |||
15226 | if (PrevDef) { | |||
15227 | Diag(NewTagLoc, diag::note_struct_class_suggestion) | |||
15228 | << getRedeclDiagFromTagKind(Redecl->getTagKind()) | |||
15229 | << FixItHint::CreateReplacement(SourceRange(NewTagLoc), | |||
15230 | TypeWithKeyword::getTagTypeKindName(Redecl->getTagKind())); | |||
15231 | } | |||
15232 | } | |||
15233 | ||||
15234 | return true; | |||
15235 | } | |||
15236 | ||||
15237 | /// Add a minimal nested name specifier fixit hint to allow lookup of a tag name | |||
15238 | /// from an outer enclosing namespace or file scope inside a friend declaration. | |||
15239 | /// This should provide the commented out code in the following snippet: | |||
15240 | /// namespace N { | |||
15241 | /// struct X; | |||
15242 | /// namespace M { | |||
15243 | /// struct Y { friend struct /*N::*/ X; }; | |||
15244 | /// } | |||
15245 | /// } | |||
15246 | static FixItHint createFriendTagNNSFixIt(Sema &SemaRef, NamedDecl *ND, Scope *S, | |||
15247 | SourceLocation NameLoc) { | |||
15248 | // While the decl is in a namespace, do repeated lookup of that name and see | |||
15249 | // if we get the same namespace back. If we do not, continue until | |||
15250 | // translation unit scope, at which point we have a fully qualified NNS. | |||
15251 | SmallVector<IdentifierInfo *, 4> Namespaces; | |||
15252 | DeclContext *DC = ND->getDeclContext()->getRedeclContext(); | |||
15253 | for (; !DC->isTranslationUnit(); DC = DC->getParent()) { | |||
15254 | // This tag should be declared in a namespace, which can only be enclosed by | |||
15255 | // other namespaces. Bail if there's an anonymous namespace in the chain. | |||
15256 | NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(DC); | |||
15257 | if (!Namespace || Namespace->isAnonymousNamespace()) | |||
15258 | return FixItHint(); | |||
15259 | IdentifierInfo *II = Namespace->getIdentifier(); | |||
15260 | Namespaces.push_back(II); | |||
15261 | NamedDecl *Lookup = SemaRef.LookupSingleName( | |||
15262 | S, II, NameLoc, Sema::LookupNestedNameSpecifierName); | |||
15263 | if (Lookup == Namespace) | |||
15264 | break; | |||
15265 | } | |||
15266 | ||||
15267 | // Once we have all the namespaces, reverse them to go outermost first, and | |||
15268 | // build an NNS. | |||
15269 | SmallString<64> Insertion; | |||
15270 | llvm::raw_svector_ostream OS(Insertion); | |||
15271 | if (DC->isTranslationUnit()) | |||
15272 | OS << "::"; | |||
15273 | std::reverse(Namespaces.begin(), Namespaces.end()); | |||
15274 | for (auto *II : Namespaces) | |||
15275 | OS << II->getName() << "::"; | |||
15276 | return FixItHint::CreateInsertion(NameLoc, Insertion); | |||
15277 | } | |||
15278 | ||||
15279 | /// Determine whether a tag originally declared in context \p OldDC can | |||
15280 | /// be redeclared with an unqualified name in \p NewDC (assuming name lookup | |||
15281 | /// found a declaration in \p OldDC as a previous decl, perhaps through a | |||
15282 | /// using-declaration). | |||
15283 | static bool isAcceptableTagRedeclContext(Sema &S, DeclContext *OldDC, | |||
15284 | DeclContext *NewDC) { | |||
15285 | OldDC = OldDC->getRedeclContext(); | |||
15286 | NewDC = NewDC->getRedeclContext(); | |||
15287 | ||||
15288 | if (OldDC->Equals(NewDC)) | |||
15289 | return true; | |||
15290 | ||||
15291 | // In MSVC mode, we allow a redeclaration if the contexts are related (either | |||
15292 | // encloses the other). | |||
15293 | if (S.getLangOpts().MSVCCompat && | |||
15294 | (OldDC->Encloses(NewDC) || NewDC->Encloses(OldDC))) | |||
15295 | return true; | |||
15296 | ||||
15297 | return false; | |||
15298 | } | |||
15299 | ||||
15300 | /// This is invoked when we see 'struct foo' or 'struct {'. In the | |||
15301 | /// former case, Name will be non-null. In the later case, Name will be null. | |||
15302 | /// TagSpec indicates what kind of tag this is. TUK indicates whether this is a | |||
15303 | /// reference/declaration/definition of a tag. | |||
15304 | /// | |||
15305 | /// \param IsTypeSpecifier \c true if this is a type-specifier (or | |||
15306 | /// trailing-type-specifier) other than one in an alias-declaration. | |||
15307 | /// | |||
15308 | /// \param SkipBody If non-null, will be set to indicate if the caller should | |||
15309 | /// skip the definition of this tag and treat it as if it were a declaration. | |||
15310 | Decl *Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, | |||
15311 | SourceLocation KWLoc, CXXScopeSpec &SS, | |||
15312 | IdentifierInfo *Name, SourceLocation NameLoc, | |||
15313 | const ParsedAttributesView &Attrs, AccessSpecifier AS, | |||
15314 | SourceLocation ModulePrivateLoc, | |||
15315 | MultiTemplateParamsArg TemplateParameterLists, | |||
15316 | bool &OwnedDecl, bool &IsDependent, | |||
15317 | SourceLocation ScopedEnumKWLoc, | |||
15318 | bool ScopedEnumUsesClassTag, TypeResult UnderlyingType, | |||
15319 | bool IsTypeSpecifier, bool IsTemplateParamOrArg, | |||
15320 | SkipBodyInfo *SkipBody) { | |||
15321 | // If this is not a definition, it must have a name. | |||
15322 | IdentifierInfo *OrigName = Name; | |||
15323 | assert((Name != nullptr || TUK == TUK_Definition) &&(((Name != nullptr || TUK == TUK_Definition) && "Nameless record must be a definition!" ) ? static_cast<void> (0) : __assert_fail ("(Name != nullptr || TUK == TUK_Definition) && \"Nameless record must be a definition!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15324, __PRETTY_FUNCTION__)) | |||
15324 | "Nameless record must be a definition!")(((Name != nullptr || TUK == TUK_Definition) && "Nameless record must be a definition!" ) ? static_cast<void> (0) : __assert_fail ("(Name != nullptr || TUK == TUK_Definition) && \"Nameless record must be a definition!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15324, __PRETTY_FUNCTION__)); | |||
15325 | assert(TemplateParameterLists.size() == 0 || TUK != TUK_Reference)((TemplateParameterLists.size() == 0 || TUK != TUK_Reference) ? static_cast<void> (0) : __assert_fail ("TemplateParameterLists.size() == 0 || TUK != TUK_Reference" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15325, __PRETTY_FUNCTION__)); | |||
15326 | ||||
15327 | OwnedDecl = false; | |||
15328 | TagTypeKind Kind = TypeWithKeyword::getTagTypeKindForTypeSpec(TagSpec); | |||
15329 | bool ScopedEnum = ScopedEnumKWLoc.isValid(); | |||
15330 | ||||
15331 | // FIXME: Check member specializations more carefully. | |||
15332 | bool isMemberSpecialization = false; | |||
15333 | bool Invalid = false; | |||
15334 | ||||
15335 | // We only need to do this matching if we have template parameters | |||
15336 | // or a scope specifier, which also conveniently avoids this work | |||
15337 | // for non-C++ cases. | |||
15338 | if (TemplateParameterLists.size() > 0 || | |||
15339 | (SS.isNotEmpty() && TUK != TUK_Reference)) { | |||
15340 | if (TemplateParameterList *TemplateParams = | |||
15341 | MatchTemplateParametersToScopeSpecifier( | |||
15342 | KWLoc, NameLoc, SS, nullptr, TemplateParameterLists, | |||
15343 | TUK == TUK_Friend, isMemberSpecialization, Invalid)) { | |||
15344 | if (Kind == TTK_Enum) { | |||
15345 | Diag(KWLoc, diag::err_enum_template); | |||
15346 | return nullptr; | |||
15347 | } | |||
15348 | ||||
15349 | if (TemplateParams->size() > 0) { | |||
15350 | // This is a declaration or definition of a class template (which may | |||
15351 | // be a member of another template). | |||
15352 | ||||
15353 | if (Invalid) | |||
15354 | return nullptr; | |||
15355 | ||||
15356 | OwnedDecl = false; | |||
15357 | DeclResult Result = CheckClassTemplate( | |||
15358 | S, TagSpec, TUK, KWLoc, SS, Name, NameLoc, Attrs, TemplateParams, | |||
15359 | AS, ModulePrivateLoc, | |||
15360 | /*FriendLoc*/ SourceLocation(), TemplateParameterLists.size() - 1, | |||
15361 | TemplateParameterLists.data(), SkipBody); | |||
15362 | return Result.get(); | |||
15363 | } else { | |||
15364 | // The "template<>" header is extraneous. | |||
15365 | Diag(TemplateParams->getTemplateLoc(), diag::err_template_tag_noparams) | |||
15366 | << TypeWithKeyword::getTagTypeKindName(Kind) << Name; | |||
15367 | isMemberSpecialization = true; | |||
15368 | } | |||
15369 | } | |||
15370 | ||||
15371 | if (!TemplateParameterLists.empty() && isMemberSpecialization && | |||
15372 | CheckTemplateDeclScope(S, TemplateParameterLists.back())) | |||
15373 | return nullptr; | |||
15374 | } | |||
15375 | ||||
15376 | // Figure out the underlying type if this a enum declaration. We need to do | |||
15377 | // this early, because it's needed to detect if this is an incompatible | |||
15378 | // redeclaration. | |||
15379 | llvm::PointerUnion<const Type*, TypeSourceInfo*> EnumUnderlying; | |||
15380 | bool IsFixed = !UnderlyingType.isUnset() || ScopedEnum; | |||
15381 | ||||
15382 | if (Kind == TTK_Enum) { | |||
15383 | if (UnderlyingType.isInvalid() || (!UnderlyingType.get() && ScopedEnum)) { | |||
15384 | // No underlying type explicitly specified, or we failed to parse the | |||
15385 | // type, default to int. | |||
15386 | EnumUnderlying = Context.IntTy.getTypePtr(); | |||
15387 | } else if (UnderlyingType.get()) { | |||
15388 | // C++0x 7.2p2: The type-specifier-seq of an enum-base shall name an | |||
15389 | // integral type; any cv-qualification is ignored. | |||
15390 | TypeSourceInfo *TI = nullptr; | |||
15391 | GetTypeFromParser(UnderlyingType.get(), &TI); | |||
15392 | EnumUnderlying = TI; | |||
15393 | ||||
15394 | if (CheckEnumUnderlyingType(TI)) | |||
15395 | // Recover by falling back to int. | |||
15396 | EnumUnderlying = Context.IntTy.getTypePtr(); | |||
15397 | ||||
15398 | if (DiagnoseUnexpandedParameterPack(TI->getTypeLoc().getBeginLoc(), TI, | |||
15399 | UPPC_FixedUnderlyingType)) | |||
15400 | EnumUnderlying = Context.IntTy.getTypePtr(); | |||
15401 | ||||
15402 | } else if (Context.getTargetInfo().getTriple().isWindowsMSVCEnvironment()) { | |||
15403 | // For MSVC ABI compatibility, unfixed enums must use an underlying type | |||
15404 | // of 'int'. However, if this is an unfixed forward declaration, don't set | |||
15405 | // the underlying type unless the user enables -fms-compatibility. This | |||
15406 | // makes unfixed forward declared enums incomplete and is more conforming. | |||
15407 | if (TUK == TUK_Definition || getLangOpts().MSVCCompat) | |||
15408 | EnumUnderlying = Context.IntTy.getTypePtr(); | |||
15409 | } | |||
15410 | } | |||
15411 | ||||
15412 | DeclContext *SearchDC = CurContext; | |||
15413 | DeclContext *DC = CurContext; | |||
15414 | bool isStdBadAlloc = false; | |||
15415 | bool isStdAlignValT = false; | |||
15416 | ||||
15417 | RedeclarationKind Redecl = forRedeclarationInCurContext(); | |||
15418 | if (TUK == TUK_Friend || TUK == TUK_Reference) | |||
15419 | Redecl = NotForRedeclaration; | |||
15420 | ||||
15421 | /// Create a new tag decl in C/ObjC. Since the ODR-like semantics for ObjC/C | |||
15422 | /// implemented asks for structural equivalence checking, the returned decl | |||
15423 | /// here is passed back to the parser, allowing the tag body to be parsed. | |||
15424 | auto createTagFromNewDecl = [&]() -> TagDecl * { | |||
15425 | assert(!getLangOpts().CPlusPlus && "not meant for C++ usage")((!getLangOpts().CPlusPlus && "not meant for C++ usage" ) ? static_cast<void> (0) : __assert_fail ("!getLangOpts().CPlusPlus && \"not meant for C++ usage\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15425, __PRETTY_FUNCTION__)); | |||
15426 | // If there is an identifier, use the location of the identifier as the | |||
15427 | // location of the decl, otherwise use the location of the struct/union | |||
15428 | // keyword. | |||
15429 | SourceLocation Loc = NameLoc.isValid() ? NameLoc : KWLoc; | |||
15430 | TagDecl *New = nullptr; | |||
15431 | ||||
15432 | if (Kind == TTK_Enum) { | |||
15433 | New = EnumDecl::Create(Context, SearchDC, KWLoc, Loc, Name, nullptr, | |||
15434 | ScopedEnum, ScopedEnumUsesClassTag, IsFixed); | |||
15435 | // If this is an undefined enum, bail. | |||
15436 | if (TUK != TUK_Definition && !Invalid) | |||
15437 | return nullptr; | |||
15438 | if (EnumUnderlying) { | |||
15439 | EnumDecl *ED = cast<EnumDecl>(New); | |||
15440 | if (TypeSourceInfo *TI = EnumUnderlying.dyn_cast<TypeSourceInfo *>()) | |||
15441 | ED->setIntegerTypeSourceInfo(TI); | |||
15442 | else | |||
15443 | ED->setIntegerType(QualType(EnumUnderlying.get<const Type *>(), 0)); | |||
15444 | ED->setPromotionType(ED->getIntegerType()); | |||
15445 | } | |||
15446 | } else { // struct/union | |||
15447 | New = RecordDecl::Create(Context, Kind, SearchDC, KWLoc, Loc, Name, | |||
15448 | nullptr); | |||
15449 | } | |||
15450 | ||||
15451 | if (RecordDecl *RD = dyn_cast<RecordDecl>(New)) { | |||
15452 | // Add alignment attributes if necessary; these attributes are checked | |||
15453 | // when the ASTContext lays out the structure. | |||
15454 | // | |||
15455 | // It is important for implementing the correct semantics that this | |||
15456 | // happen here (in ActOnTag). The #pragma pack stack is | |||
15457 | // maintained as a result of parser callbacks which can occur at | |||
15458 | // many points during the parsing of a struct declaration (because | |||
15459 | // the #pragma tokens are effectively skipped over during the | |||
15460 | // parsing of the struct). | |||
15461 | if (TUK == TUK_Definition && (!SkipBody || !SkipBody->ShouldSkip)) { | |||
15462 | AddAlignmentAttributesForRecord(RD); | |||
15463 | AddMsStructLayoutForRecord(RD); | |||
15464 | } | |||
15465 | } | |||
15466 | New->setLexicalDeclContext(CurContext); | |||
15467 | return New; | |||
15468 | }; | |||
15469 | ||||
15470 | LookupResult Previous(*this, Name, NameLoc, LookupTagName, Redecl); | |||
15471 | if (Name && SS.isNotEmpty()) { | |||
15472 | // We have a nested-name tag ('struct foo::bar'). | |||
15473 | ||||
15474 | // Check for invalid 'foo::'. | |||
15475 | if (SS.isInvalid()) { | |||
15476 | Name = nullptr; | |||
15477 | goto CreateNewDecl; | |||
15478 | } | |||
15479 | ||||
15480 | // If this is a friend or a reference to a class in a dependent | |||
15481 | // context, don't try to make a decl for it. | |||
15482 | if (TUK == TUK_Friend || TUK == TUK_Reference) { | |||
15483 | DC = computeDeclContext(SS, false); | |||
15484 | if (!DC) { | |||
15485 | IsDependent = true; | |||
15486 | return nullptr; | |||
15487 | } | |||
15488 | } else { | |||
15489 | DC = computeDeclContext(SS, true); | |||
15490 | if (!DC) { | |||
15491 | Diag(SS.getRange().getBegin(), diag::err_dependent_nested_name_spec) | |||
15492 | << SS.getRange(); | |||
15493 | return nullptr; | |||
15494 | } | |||
15495 | } | |||
15496 | ||||
15497 | if (RequireCompleteDeclContext(SS, DC)) | |||
15498 | return nullptr; | |||
15499 | ||||
15500 | SearchDC = DC; | |||
15501 | // Look-up name inside 'foo::'. | |||
15502 | LookupQualifiedName(Previous, DC); | |||
15503 | ||||
15504 | if (Previous.isAmbiguous()) | |||
15505 | return nullptr; | |||
15506 | ||||
15507 | if (Previous.empty()) { | |||
15508 | // Name lookup did not find anything. However, if the | |||
15509 | // nested-name-specifier refers to the current instantiation, | |||
15510 | // and that current instantiation has any dependent base | |||
15511 | // classes, we might find something at instantiation time: treat | |||
15512 | // this as a dependent elaborated-type-specifier. | |||
15513 | // But this only makes any sense for reference-like lookups. | |||
15514 | if (Previous.wasNotFoundInCurrentInstantiation() && | |||
15515 | (TUK == TUK_Reference || TUK == TUK_Friend)) { | |||
15516 | IsDependent = true; | |||
15517 | return nullptr; | |||
15518 | } | |||
15519 | ||||
15520 | // A tag 'foo::bar' must already exist. | |||
15521 | Diag(NameLoc, diag::err_not_tag_in_scope) | |||
15522 | << Kind << Name << DC << SS.getRange(); | |||
15523 | Name = nullptr; | |||
15524 | Invalid = true; | |||
15525 | goto CreateNewDecl; | |||
15526 | } | |||
15527 | } else if (Name) { | |||
15528 | // C++14 [class.mem]p14: | |||
15529 | // If T is the name of a class, then each of the following shall have a | |||
15530 | // name different from T: | |||
15531 | // -- every member of class T that is itself a type | |||
15532 | if (TUK != TUK_Reference && TUK != TUK_Friend && | |||
15533 | DiagnoseClassNameShadow(SearchDC, DeclarationNameInfo(Name, NameLoc))) | |||
15534 | return nullptr; | |||
15535 | ||||
15536 | // If this is a named struct, check to see if there was a previous forward | |||
15537 | // declaration or definition. | |||
15538 | // FIXME: We're looking into outer scopes here, even when we | |||
15539 | // shouldn't be. Doing so can result in ambiguities that we | |||
15540 | // shouldn't be diagnosing. | |||
15541 | LookupName(Previous, S); | |||
15542 | ||||
15543 | // When declaring or defining a tag, ignore ambiguities introduced | |||
15544 | // by types using'ed into this scope. | |||
15545 | if (Previous.isAmbiguous() && | |||
15546 | (TUK == TUK_Definition || TUK == TUK_Declaration)) { | |||
15547 | LookupResult::Filter F = Previous.makeFilter(); | |||
15548 | while (F.hasNext()) { | |||
15549 | NamedDecl *ND = F.next(); | |||
15550 | if (!ND->getDeclContext()->getRedeclContext()->Equals( | |||
15551 | SearchDC->getRedeclContext())) | |||
15552 | F.erase(); | |||
15553 | } | |||
15554 | F.done(); | |||
15555 | } | |||
15556 | ||||
15557 | // C++11 [namespace.memdef]p3: | |||
15558 | // If the name in a friend declaration is neither qualified nor | |||
15559 | // a template-id and the declaration is a function or an | |||
15560 | // elaborated-type-specifier, the lookup to determine whether | |||
15561 | // the entity has been previously declared shall not consider | |||
15562 | // any scopes outside the innermost enclosing namespace. | |||
15563 | // | |||
15564 | // MSVC doesn't implement the above rule for types, so a friend tag | |||
15565 | // declaration may be a redeclaration of a type declared in an enclosing | |||
15566 | // scope. They do implement this rule for friend functions. | |||
15567 | // | |||
15568 | // Does it matter that this should be by scope instead of by | |||
15569 | // semantic context? | |||
15570 | if (!Previous.empty() && TUK == TUK_Friend) { | |||
15571 | DeclContext *EnclosingNS = SearchDC->getEnclosingNamespaceContext(); | |||
15572 | LookupResult::Filter F = Previous.makeFilter(); | |||
15573 | bool FriendSawTagOutsideEnclosingNamespace = false; | |||
15574 | while (F.hasNext()) { | |||
15575 | NamedDecl *ND = F.next(); | |||
15576 | DeclContext *DC = ND->getDeclContext()->getRedeclContext(); | |||
15577 | if (DC->isFileContext() && | |||
15578 | !EnclosingNS->Encloses(ND->getDeclContext())) { | |||
15579 | if (getLangOpts().MSVCCompat) | |||
15580 | FriendSawTagOutsideEnclosingNamespace = true; | |||
15581 | else | |||
15582 | F.erase(); | |||
15583 | } | |||
15584 | } | |||
15585 | F.done(); | |||
15586 | ||||
15587 | // Diagnose this MSVC extension in the easy case where lookup would have | |||
15588 | // unambiguously found something outside the enclosing namespace. | |||
15589 | if (Previous.isSingleResult() && FriendSawTagOutsideEnclosingNamespace) { | |||
15590 | NamedDecl *ND = Previous.getFoundDecl(); | |||
15591 | Diag(NameLoc, diag::ext_friend_tag_redecl_outside_namespace) | |||
15592 | << createFriendTagNNSFixIt(*this, ND, S, NameLoc); | |||
15593 | } | |||
15594 | } | |||
15595 | ||||
15596 | // Note: there used to be some attempt at recovery here. | |||
15597 | if (Previous.isAmbiguous()) | |||
15598 | return nullptr; | |||
15599 | ||||
15600 | if (!getLangOpts().CPlusPlus && TUK != TUK_Reference) { | |||
15601 | // FIXME: This makes sure that we ignore the contexts associated | |||
15602 | // with C structs, unions, and enums when looking for a matching | |||
15603 | // tag declaration or definition. See the similar lookup tweak | |||
15604 | // in Sema::LookupName; is there a better way to deal with this? | |||
15605 | while (isa<RecordDecl>(SearchDC) || isa<EnumDecl>(SearchDC)) | |||
15606 | SearchDC = SearchDC->getParent(); | |||
15607 | } | |||
15608 | } | |||
15609 | ||||
15610 | if (Previous.isSingleResult() && | |||
15611 | Previous.getFoundDecl()->isTemplateParameter()) { | |||
15612 | // Maybe we will complain about the shadowed template parameter. | |||
15613 | DiagnoseTemplateParameterShadow(NameLoc, Previous.getFoundDecl()); | |||
15614 | // Just pretend that we didn't see the previous declaration. | |||
15615 | Previous.clear(); | |||
15616 | } | |||
15617 | ||||
15618 | if (getLangOpts().CPlusPlus && Name && DC && StdNamespace && | |||
15619 | DC->Equals(getStdNamespace())) { | |||
15620 | if (Name->isStr("bad_alloc")) { | |||
15621 | // This is a declaration of or a reference to "std::bad_alloc". | |||
15622 | isStdBadAlloc = true; | |||
15623 | ||||
15624 | // If std::bad_alloc has been implicitly declared (but made invisible to | |||
15625 | // name lookup), fill in this implicit declaration as the previous | |||
15626 | // declaration, so that the declarations get chained appropriately. | |||
15627 | if (Previous.empty() && StdBadAlloc) | |||
15628 | Previous.addDecl(getStdBadAlloc()); | |||
15629 | } else if (Name->isStr("align_val_t")) { | |||
15630 | isStdAlignValT = true; | |||
15631 | if (Previous.empty() && StdAlignValT) | |||
15632 | Previous.addDecl(getStdAlignValT()); | |||
15633 | } | |||
15634 | } | |||
15635 | ||||
15636 | // If we didn't find a previous declaration, and this is a reference | |||
15637 | // (or friend reference), move to the correct scope. In C++, we | |||
15638 | // also need to do a redeclaration lookup there, just in case | |||
15639 | // there's a shadow friend decl. | |||
15640 | if (Name && Previous.empty() && | |||
15641 | (TUK == TUK_Reference || TUK == TUK_Friend || IsTemplateParamOrArg)) { | |||
15642 | if (Invalid) goto CreateNewDecl; | |||
15643 | assert(SS.isEmpty())((SS.isEmpty()) ? static_cast<void> (0) : __assert_fail ("SS.isEmpty()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15643, __PRETTY_FUNCTION__)); | |||
15644 | ||||
15645 | if (TUK == TUK_Reference || IsTemplateParamOrArg) { | |||
15646 | // C++ [basic.scope.pdecl]p5: | |||
15647 | // -- for an elaborated-type-specifier of the form | |||
15648 | // | |||
15649 | // class-key identifier | |||
15650 | // | |||
15651 | // if the elaborated-type-specifier is used in the | |||
15652 | // decl-specifier-seq or parameter-declaration-clause of a | |||
15653 | // function defined in namespace scope, the identifier is | |||
15654 | // declared as a class-name in the namespace that contains | |||
15655 | // the declaration; otherwise, except as a friend | |||
15656 | // declaration, the identifier is declared in the smallest | |||
15657 | // non-class, non-function-prototype scope that contains the | |||
15658 | // declaration. | |||
15659 | // | |||
15660 | // C99 6.7.2.3p8 has a similar (but not identical!) provision for | |||
15661 | // C structs and unions. | |||
15662 | // | |||
15663 | // It is an error in C++ to declare (rather than define) an enum | |||
15664 | // type, including via an elaborated type specifier. We'll | |||
15665 | // diagnose that later; for now, declare the enum in the same | |||
15666 | // scope as we would have picked for any other tag type. | |||
15667 | // | |||
15668 | // GNU C also supports this behavior as part of its incomplete | |||
15669 | // enum types extension, while GNU C++ does not. | |||
15670 | // | |||
15671 | // Find the context where we'll be declaring the tag. | |||
15672 | // FIXME: We would like to maintain the current DeclContext as the | |||
15673 | // lexical context, | |||
15674 | SearchDC = getTagInjectionContext(SearchDC); | |||
15675 | ||||
15676 | // Find the scope where we'll be declaring the tag. | |||
15677 | S = getTagInjectionScope(S, getLangOpts()); | |||
15678 | } else { | |||
15679 | assert(TUK == TUK_Friend)((TUK == TUK_Friend) ? static_cast<void> (0) : __assert_fail ("TUK == TUK_Friend", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 15679, __PRETTY_FUNCTION__)); | |||
15680 | // C++ [namespace.memdef]p3: | |||
15681 | // If a friend declaration in a non-local class first declares a | |||
15682 | // class or function, the friend class or function is a member of | |||
15683 | // the innermost enclosing namespace. | |||
15684 | SearchDC = SearchDC->getEnclosingNamespaceContext(); | |||
15685 | } | |||
15686 | ||||
15687 | // In C++, we need to do a redeclaration lookup to properly | |||
15688 | // diagnose some problems. | |||
15689 | // FIXME: redeclaration lookup is also used (with and without C++) to find a | |||
15690 | // hidden declaration so that we don't get ambiguity errors when using a | |||
15691 | // type declared by an elaborated-type-specifier. In C that is not correct | |||
15692 | // and we should instead merge compatible types found by lookup. | |||
15693 | if (getLangOpts().CPlusPlus) { | |||
15694 | // FIXME: This can perform qualified lookups into function contexts, | |||
15695 | // which are meaningless. | |||
15696 | Previous.setRedeclarationKind(forRedeclarationInCurContext()); | |||
15697 | LookupQualifiedName(Previous, SearchDC); | |||
15698 | } else { | |||
15699 | Previous.setRedeclarationKind(forRedeclarationInCurContext()); | |||
15700 | LookupName(Previous, S); | |||
15701 | } | |||
15702 | } | |||
15703 | ||||
15704 | // If we have a known previous declaration to use, then use it. | |||
15705 | if (Previous.empty() && SkipBody && SkipBody->Previous) | |||
15706 | Previous.addDecl(SkipBody->Previous); | |||
15707 | ||||
15708 | if (!Previous.empty()) { | |||
15709 | NamedDecl *PrevDecl = Previous.getFoundDecl(); | |||
15710 | NamedDecl *DirectPrevDecl = Previous.getRepresentativeDecl(); | |||
15711 | ||||
15712 | // It's okay to have a tag decl in the same scope as a typedef | |||
15713 | // which hides a tag decl in the same scope. Finding this | |||
15714 | // insanity with a redeclaration lookup can only actually happen | |||
15715 | // in C++. | |||
15716 | // | |||
15717 | // This is also okay for elaborated-type-specifiers, which is | |||
15718 | // technically forbidden by the current standard but which is | |||
15719 | // okay according to the likely resolution of an open issue; | |||
15720 | // see http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#407 | |||
15721 | if (getLangOpts().CPlusPlus) { | |||
15722 | if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(PrevDecl)) { | |||
15723 | if (const TagType *TT = TD->getUnderlyingType()->getAs<TagType>()) { | |||
15724 | TagDecl *Tag = TT->getDecl(); | |||
15725 | if (Tag->getDeclName() == Name && | |||
15726 | Tag->getDeclContext()->getRedeclContext() | |||
15727 | ->Equals(TD->getDeclContext()->getRedeclContext())) { | |||
15728 | PrevDecl = Tag; | |||
15729 | Previous.clear(); | |||
15730 | Previous.addDecl(Tag); | |||
15731 | Previous.resolveKind(); | |||
15732 | } | |||
15733 | } | |||
15734 | } | |||
15735 | } | |||
15736 | ||||
15737 | // If this is a redeclaration of a using shadow declaration, it must | |||
15738 | // declare a tag in the same context. In MSVC mode, we allow a | |||
15739 | // redefinition if either context is within the other. | |||
15740 | if (auto *Shadow = dyn_cast<UsingShadowDecl>(DirectPrevDecl)) { | |||
15741 | auto *OldTag = dyn_cast<TagDecl>(PrevDecl); | |||
15742 | if (SS.isEmpty() && TUK != TUK_Reference && TUK != TUK_Friend && | |||
15743 | isDeclInScope(Shadow, SearchDC, S, isMemberSpecialization) && | |||
15744 | !(OldTag && isAcceptableTagRedeclContext( | |||
15745 | *this, OldTag->getDeclContext(), SearchDC))) { | |||
15746 | Diag(KWLoc, diag::err_using_decl_conflict_reverse); | |||
15747 | Diag(Shadow->getTargetDecl()->getLocation(), | |||
15748 | diag::note_using_decl_target); | |||
15749 | Diag(Shadow->getUsingDecl()->getLocation(), diag::note_using_decl) | |||
15750 | << 0; | |||
15751 | // Recover by ignoring the old declaration. | |||
15752 | Previous.clear(); | |||
15753 | goto CreateNewDecl; | |||
15754 | } | |||
15755 | } | |||
15756 | ||||
15757 | if (TagDecl *PrevTagDecl = dyn_cast<TagDecl>(PrevDecl)) { | |||
15758 | // If this is a use of a previous tag, or if the tag is already declared | |||
15759 | // in the same scope (so that the definition/declaration completes or | |||
15760 | // rementions the tag), reuse the decl. | |||
15761 | if (TUK == TUK_Reference || TUK == TUK_Friend || | |||
15762 | isDeclInScope(DirectPrevDecl, SearchDC, S, | |||
15763 | SS.isNotEmpty() || isMemberSpecialization)) { | |||
15764 | // Make sure that this wasn't declared as an enum and now used as a | |||
15765 | // struct or something similar. | |||
15766 | if (!isAcceptableTagRedeclaration(PrevTagDecl, Kind, | |||
15767 | TUK == TUK_Definition, KWLoc, | |||
15768 | Name)) { | |||
15769 | bool SafeToContinue | |||
15770 | = (PrevTagDecl->getTagKind() != TTK_Enum && | |||
15771 | Kind != TTK_Enum); | |||
15772 | if (SafeToContinue) | |||
15773 | Diag(KWLoc, diag::err_use_with_wrong_tag) | |||
15774 | << Name | |||
15775 | << FixItHint::CreateReplacement(SourceRange(KWLoc), | |||
15776 | PrevTagDecl->getKindName()); | |||
15777 | else | |||
15778 | Diag(KWLoc, diag::err_use_with_wrong_tag) << Name; | |||
15779 | Diag(PrevTagDecl->getLocation(), diag::note_previous_use); | |||
15780 | ||||
15781 | if (SafeToContinue) | |||
15782 | Kind = PrevTagDecl->getTagKind(); | |||
15783 | else { | |||
15784 | // Recover by making this an anonymous redefinition. | |||
15785 | Name = nullptr; | |||
15786 | Previous.clear(); | |||
15787 | Invalid = true; | |||
15788 | } | |||
15789 | } | |||
15790 | ||||
15791 | if (Kind == TTK_Enum && PrevTagDecl->getTagKind() == TTK_Enum) { | |||
15792 | const EnumDecl *PrevEnum = cast<EnumDecl>(PrevTagDecl); | |||
15793 | if (TUK == TUK_Reference || TUK == TUK_Friend) | |||
15794 | return PrevTagDecl; | |||
15795 | ||||
15796 | QualType EnumUnderlyingTy; | |||
15797 | if (TypeSourceInfo *TI = EnumUnderlying.dyn_cast<TypeSourceInfo*>()) | |||
15798 | EnumUnderlyingTy = TI->getType().getUnqualifiedType(); | |||
15799 | else if (const Type *T = EnumUnderlying.dyn_cast<const Type*>()) | |||
15800 | EnumUnderlyingTy = QualType(T, 0); | |||
15801 | ||||
15802 | // All conflicts with previous declarations are recovered by | |||
15803 | // returning the previous declaration, unless this is a definition, | |||
15804 | // in which case we want the caller to bail out. | |||
15805 | if (CheckEnumRedeclaration(NameLoc.isValid() ? NameLoc : KWLoc, | |||
15806 | ScopedEnum, EnumUnderlyingTy, | |||
15807 | IsFixed, PrevEnum)) | |||
15808 | return TUK == TUK_Declaration ? PrevTagDecl : nullptr; | |||
15809 | } | |||
15810 | ||||
15811 | // C++11 [class.mem]p1: | |||
15812 | // A member shall not be declared twice in the member-specification, | |||
15813 | // except that a nested class or member class template can be declared | |||
15814 | // and then later defined. | |||
15815 | if (TUK == TUK_Declaration && PrevDecl->isCXXClassMember() && | |||
15816 | S->isDeclScope(PrevDecl)) { | |||
15817 | Diag(NameLoc, diag::ext_member_redeclared); | |||
15818 | Diag(PrevTagDecl->getLocation(), diag::note_previous_declaration); | |||
15819 | } | |||
15820 | ||||
15821 | if (!Invalid) { | |||
15822 | // If this is a use, just return the declaration we found, unless | |||
15823 | // we have attributes. | |||
15824 | if (TUK == TUK_Reference || TUK == TUK_Friend) { | |||
15825 | if (!Attrs.empty()) { | |||
15826 | // FIXME: Diagnose these attributes. For now, we create a new | |||
15827 | // declaration to hold them. | |||
15828 | } else if (TUK == TUK_Reference && | |||
15829 | (PrevTagDecl->getFriendObjectKind() == | |||
15830 | Decl::FOK_Undeclared || | |||
15831 | PrevDecl->getOwningModule() != getCurrentModule()) && | |||
15832 | SS.isEmpty()) { | |||
15833 | // This declaration is a reference to an existing entity, but | |||
15834 | // has different visibility from that entity: it either makes | |||
15835 | // a friend visible or it makes a type visible in a new module. | |||
15836 | // In either case, create a new declaration. We only do this if | |||
15837 | // the declaration would have meant the same thing if no prior | |||
15838 | // declaration were found, that is, if it was found in the same | |||
15839 | // scope where we would have injected a declaration. | |||
15840 | if (!getTagInjectionContext(CurContext)->getRedeclContext() | |||
15841 | ->Equals(PrevDecl->getDeclContext()->getRedeclContext())) | |||
15842 | return PrevTagDecl; | |||
15843 | // This is in the injected scope, create a new declaration in | |||
15844 | // that scope. | |||
15845 | S = getTagInjectionScope(S, getLangOpts()); | |||
15846 | } else { | |||
15847 | return PrevTagDecl; | |||
15848 | } | |||
15849 | } | |||
15850 | ||||
15851 | // Diagnose attempts to redefine a tag. | |||
15852 | if (TUK == TUK_Definition) { | |||
15853 | if (NamedDecl *Def = PrevTagDecl->getDefinition()) { | |||
15854 | // If we're defining a specialization and the previous definition | |||
15855 | // is from an implicit instantiation, don't emit an error | |||
15856 | // here; we'll catch this in the general case below. | |||
15857 | bool IsExplicitSpecializationAfterInstantiation = false; | |||
15858 | if (isMemberSpecialization) { | |||
15859 | if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(Def)) | |||
15860 | IsExplicitSpecializationAfterInstantiation = | |||
15861 | RD->getTemplateSpecializationKind() != | |||
15862 | TSK_ExplicitSpecialization; | |||
15863 | else if (EnumDecl *ED = dyn_cast<EnumDecl>(Def)) | |||
15864 | IsExplicitSpecializationAfterInstantiation = | |||
15865 | ED->getTemplateSpecializationKind() != | |||
15866 | TSK_ExplicitSpecialization; | |||
15867 | } | |||
15868 | ||||
15869 | // Note that clang allows ODR-like semantics for ObjC/C, i.e., do | |||
15870 | // not keep more that one definition around (merge them). However, | |||
15871 | // ensure the decl passes the structural compatibility check in | |||
15872 | // C11 6.2.7/1 (or 6.1.2.6/1 in C89). | |||
15873 | NamedDecl *Hidden = nullptr; | |||
15874 | if (SkipBody && !hasVisibleDefinition(Def, &Hidden)) { | |||
15875 | // There is a definition of this tag, but it is not visible. We | |||
15876 | // explicitly make use of C++'s one definition rule here, and | |||
15877 | // assume that this definition is identical to the hidden one | |||
15878 | // we already have. Make the existing definition visible and | |||
15879 | // use it in place of this one. | |||
15880 | if (!getLangOpts().CPlusPlus) { | |||
15881 | // Postpone making the old definition visible until after we | |||
15882 | // complete parsing the new one and do the structural | |||
15883 | // comparison. | |||
15884 | SkipBody->CheckSameAsPrevious = true; | |||
15885 | SkipBody->New = createTagFromNewDecl(); | |||
15886 | SkipBody->Previous = Def; | |||
15887 | return Def; | |||
15888 | } else { | |||
15889 | SkipBody->ShouldSkip = true; | |||
15890 | SkipBody->Previous = Def; | |||
15891 | makeMergedDefinitionVisible(Hidden); | |||
15892 | // Carry on and handle it like a normal definition. We'll | |||
15893 | // skip starting the definitiion later. | |||
15894 | } | |||
15895 | } else if (!IsExplicitSpecializationAfterInstantiation) { | |||
15896 | // A redeclaration in function prototype scope in C isn't | |||
15897 | // visible elsewhere, so merely issue a warning. | |||
15898 | if (!getLangOpts().CPlusPlus && S->containedInPrototypeScope()) | |||
15899 | Diag(NameLoc, diag::warn_redefinition_in_param_list) << Name; | |||
15900 | else | |||
15901 | Diag(NameLoc, diag::err_redefinition) << Name; | |||
15902 | notePreviousDefinition(Def, | |||
15903 | NameLoc.isValid() ? NameLoc : KWLoc); | |||
15904 | // If this is a redefinition, recover by making this | |||
15905 | // struct be anonymous, which will make any later | |||
15906 | // references get the previous definition. | |||
15907 | Name = nullptr; | |||
15908 | Previous.clear(); | |||
15909 | Invalid = true; | |||
15910 | } | |||
15911 | } else { | |||
15912 | // If the type is currently being defined, complain | |||
15913 | // about a nested redefinition. | |||
15914 | auto *TD = Context.getTagDeclType(PrevTagDecl)->getAsTagDecl(); | |||
15915 | if (TD->isBeingDefined()) { | |||
15916 | Diag(NameLoc, diag::err_nested_redefinition) << Name; | |||
15917 | Diag(PrevTagDecl->getLocation(), | |||
15918 | diag::note_previous_definition); | |||
15919 | Name = nullptr; | |||
15920 | Previous.clear(); | |||
15921 | Invalid = true; | |||
15922 | } | |||
15923 | } | |||
15924 | ||||
15925 | // Okay, this is definition of a previously declared or referenced | |||
15926 | // tag. We're going to create a new Decl for it. | |||
15927 | } | |||
15928 | ||||
15929 | // Okay, we're going to make a redeclaration. If this is some kind | |||
15930 | // of reference, make sure we build the redeclaration in the same DC | |||
15931 | // as the original, and ignore the current access specifier. | |||
15932 | if (TUK == TUK_Friend || TUK == TUK_Reference) { | |||
15933 | SearchDC = PrevTagDecl->getDeclContext(); | |||
15934 | AS = AS_none; | |||
15935 | } | |||
15936 | } | |||
15937 | // If we get here we have (another) forward declaration or we | |||
15938 | // have a definition. Just create a new decl. | |||
15939 | ||||
15940 | } else { | |||
15941 | // If we get here, this is a definition of a new tag type in a nested | |||
15942 | // scope, e.g. "struct foo; void bar() { struct foo; }", just create a | |||
15943 | // new decl/type. We set PrevDecl to NULL so that the entities | |||
15944 | // have distinct types. | |||
15945 | Previous.clear(); | |||
15946 | } | |||
15947 | // If we get here, we're going to create a new Decl. If PrevDecl | |||
15948 | // is non-NULL, it's a definition of the tag declared by | |||
15949 | // PrevDecl. If it's NULL, we have a new definition. | |||
15950 | ||||
15951 | // Otherwise, PrevDecl is not a tag, but was found with tag | |||
15952 | // lookup. This is only actually possible in C++, where a few | |||
15953 | // things like templates still live in the tag namespace. | |||
15954 | } else { | |||
15955 | // Use a better diagnostic if an elaborated-type-specifier | |||
15956 | // found the wrong kind of type on the first | |||
15957 | // (non-redeclaration) lookup. | |||
15958 | if ((TUK == TUK_Reference || TUK == TUK_Friend) && | |||
15959 | !Previous.isForRedeclaration()) { | |||
15960 | NonTagKind NTK = getNonTagTypeDeclKind(PrevDecl, Kind); | |||
15961 | Diag(NameLoc, diag::err_tag_reference_non_tag) << PrevDecl << NTK | |||
15962 | << Kind; | |||
15963 | Diag(PrevDecl->getLocation(), diag::note_declared_at); | |||
15964 | Invalid = true; | |||
15965 | ||||
15966 | // Otherwise, only diagnose if the declaration is in scope. | |||
15967 | } else if (!isDeclInScope(DirectPrevDecl, SearchDC, S, | |||
15968 | SS.isNotEmpty() || isMemberSpecialization)) { | |||
15969 | // do nothing | |||
15970 | ||||
15971 | // Diagnose implicit declarations introduced by elaborated types. | |||
15972 | } else if (TUK == TUK_Reference || TUK == TUK_Friend) { | |||
15973 | NonTagKind NTK = getNonTagTypeDeclKind(PrevDecl, Kind); | |||
15974 | Diag(NameLoc, diag::err_tag_reference_conflict) << NTK; | |||
15975 | Diag(PrevDecl->getLocation(), diag::note_previous_decl) << PrevDecl; | |||
15976 | Invalid = true; | |||
15977 | ||||
15978 | // Otherwise it's a declaration. Call out a particularly common | |||
15979 | // case here. | |||
15980 | } else if (TypedefNameDecl *TND = dyn_cast<TypedefNameDecl>(PrevDecl)) { | |||
15981 | unsigned Kind = 0; | |||
15982 | if (isa<TypeAliasDecl>(PrevDecl)) Kind = 1; | |||
15983 | Diag(NameLoc, diag::err_tag_definition_of_typedef) | |||
15984 | << Name << Kind << TND->getUnderlyingType(); | |||
15985 | Diag(PrevDecl->getLocation(), diag::note_previous_decl) << PrevDecl; | |||
15986 | Invalid = true; | |||
15987 | ||||
15988 | // Otherwise, diagnose. | |||
15989 | } else { | |||
15990 | // The tag name clashes with something else in the target scope, | |||
15991 | // issue an error and recover by making this tag be anonymous. | |||
15992 | Diag(NameLoc, diag::err_redefinition_different_kind) << Name; | |||
15993 | notePreviousDefinition(PrevDecl, NameLoc); | |||
15994 | Name = nullptr; | |||
15995 | Invalid = true; | |||
15996 | } | |||
15997 | ||||
15998 | // The existing declaration isn't relevant to us; we're in a | |||
15999 | // new scope, so clear out the previous declaration. | |||
16000 | Previous.clear(); | |||
16001 | } | |||
16002 | } | |||
16003 | ||||
16004 | CreateNewDecl: | |||
16005 | ||||
16006 | TagDecl *PrevDecl = nullptr; | |||
16007 | if (Previous.isSingleResult()) | |||
16008 | PrevDecl = cast<TagDecl>(Previous.getFoundDecl()); | |||
16009 | ||||
16010 | // If there is an identifier, use the location of the identifier as the | |||
16011 | // location of the decl, otherwise use the location of the struct/union | |||
16012 | // keyword. | |||
16013 | SourceLocation Loc = NameLoc.isValid() ? NameLoc : KWLoc; | |||
16014 | ||||
16015 | // Otherwise, create a new declaration. If there is a previous | |||
16016 | // declaration of the same entity, the two will be linked via | |||
16017 | // PrevDecl. | |||
16018 | TagDecl *New; | |||
16019 | ||||
16020 | if (Kind == TTK_Enum) { | |||
16021 | // FIXME: Tag decls should be chained to any simultaneous vardecls, e.g.: | |||
16022 | // enum X { A, B, C } D; D should chain to X. | |||
16023 | New = EnumDecl::Create(Context, SearchDC, KWLoc, Loc, Name, | |||
16024 | cast_or_null<EnumDecl>(PrevDecl), ScopedEnum, | |||
16025 | ScopedEnumUsesClassTag, IsFixed); | |||
16026 | ||||
16027 | if (isStdAlignValT && (!StdAlignValT || getStdAlignValT()->isImplicit())) | |||
16028 | StdAlignValT = cast<EnumDecl>(New); | |||
16029 | ||||
16030 | // If this is an undefined enum, warn. | |||
16031 | if (TUK != TUK_Definition && !Invalid) { | |||
16032 | TagDecl *Def; | |||
16033 | if (IsFixed && cast<EnumDecl>(New)->isFixed()) { | |||
16034 | // C++0x: 7.2p2: opaque-enum-declaration. | |||
16035 | // Conflicts are diagnosed above. Do nothing. | |||
16036 | } | |||
16037 | else if (PrevDecl && (Def = cast<EnumDecl>(PrevDecl)->getDefinition())) { | |||
16038 | Diag(Loc, diag::ext_forward_ref_enum_def) | |||
16039 | << New; | |||
16040 | Diag(Def->getLocation(), diag::note_previous_definition); | |||
16041 | } else { | |||
16042 | unsigned DiagID = diag::ext_forward_ref_enum; | |||
16043 | if (getLangOpts().MSVCCompat) | |||
16044 | DiagID = diag::ext_ms_forward_ref_enum; | |||
16045 | else if (getLangOpts().CPlusPlus) | |||
16046 | DiagID = diag::err_forward_ref_enum; | |||
16047 | Diag(Loc, DiagID); | |||
16048 | } | |||
16049 | } | |||
16050 | ||||
16051 | if (EnumUnderlying) { | |||
16052 | EnumDecl *ED = cast<EnumDecl>(New); | |||
16053 | if (TypeSourceInfo *TI = EnumUnderlying.dyn_cast<TypeSourceInfo*>()) | |||
16054 | ED->setIntegerTypeSourceInfo(TI); | |||
16055 | else | |||
16056 | ED->setIntegerType(QualType(EnumUnderlying.get<const Type*>(), 0)); | |||
16057 | ED->setPromotionType(ED->getIntegerType()); | |||
16058 | assert(ED->isComplete() && "enum with type should be complete")((ED->isComplete() && "enum with type should be complete" ) ? static_cast<void> (0) : __assert_fail ("ED->isComplete() && \"enum with type should be complete\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16058, __PRETTY_FUNCTION__)); | |||
16059 | } | |||
16060 | } else { | |||
16061 | // struct/union/class | |||
16062 | ||||
16063 | // FIXME: Tag decls should be chained to any simultaneous vardecls, e.g.: | |||
16064 | // struct X { int A; } D; D should chain to X. | |||
16065 | if (getLangOpts().CPlusPlus) { | |||
16066 | // FIXME: Look for a way to use RecordDecl for simple structs. | |||
16067 | New = CXXRecordDecl::Create(Context, Kind, SearchDC, KWLoc, Loc, Name, | |||
16068 | cast_or_null<CXXRecordDecl>(PrevDecl)); | |||
16069 | ||||
16070 | if (isStdBadAlloc && (!StdBadAlloc || getStdBadAlloc()->isImplicit())) | |||
16071 | StdBadAlloc = cast<CXXRecordDecl>(New); | |||
16072 | } else | |||
16073 | New = RecordDecl::Create(Context, Kind, SearchDC, KWLoc, Loc, Name, | |||
16074 | cast_or_null<RecordDecl>(PrevDecl)); | |||
16075 | } | |||
16076 | ||||
16077 | // C++11 [dcl.type]p3: | |||
16078 | // A type-specifier-seq shall not define a class or enumeration [...]. | |||
16079 | if (getLangOpts().CPlusPlus && (IsTypeSpecifier || IsTemplateParamOrArg) && | |||
16080 | TUK == TUK_Definition) { | |||
16081 | Diag(New->getLocation(), diag::err_type_defined_in_type_specifier) | |||
16082 | << Context.getTagDeclType(New); | |||
16083 | Invalid = true; | |||
16084 | } | |||
16085 | ||||
16086 | if (!Invalid && getLangOpts().CPlusPlus && TUK == TUK_Definition && | |||
16087 | DC->getDeclKind() == Decl::Enum) { | |||
16088 | Diag(New->getLocation(), diag::err_type_defined_in_enum) | |||
16089 | << Context.getTagDeclType(New); | |||
16090 | Invalid = true; | |||
16091 | } | |||
16092 | ||||
16093 | // Maybe add qualifier info. | |||
16094 | if (SS.isNotEmpty()) { | |||
16095 | if (SS.isSet()) { | |||
16096 | // If this is either a declaration or a definition, check the | |||
16097 | // nested-name-specifier against the current context. | |||
16098 | if ((TUK == TUK_Definition || TUK == TUK_Declaration) && | |||
16099 | diagnoseQualifiedDeclaration(SS, DC, OrigName, Loc, | |||
16100 | isMemberSpecialization)) | |||
16101 | Invalid = true; | |||
16102 | ||||
16103 | New->setQualifierInfo(SS.getWithLocInContext(Context)); | |||
16104 | if (TemplateParameterLists.size() > 0) { | |||
16105 | New->setTemplateParameterListsInfo(Context, TemplateParameterLists); | |||
16106 | } | |||
16107 | } | |||
16108 | else | |||
16109 | Invalid = true; | |||
16110 | } | |||
16111 | ||||
16112 | if (RecordDecl *RD = dyn_cast<RecordDecl>(New)) { | |||
16113 | // Add alignment attributes if necessary; these attributes are checked when | |||
16114 | // the ASTContext lays out the structure. | |||
16115 | // | |||
16116 | // It is important for implementing the correct semantics that this | |||
16117 | // happen here (in ActOnTag). The #pragma pack stack is | |||
16118 | // maintained as a result of parser callbacks which can occur at | |||
16119 | // many points during the parsing of a struct declaration (because | |||
16120 | // the #pragma tokens are effectively skipped over during the | |||
16121 | // parsing of the struct). | |||
16122 | if (TUK == TUK_Definition && (!SkipBody || !SkipBody->ShouldSkip)) { | |||
16123 | AddAlignmentAttributesForRecord(RD); | |||
16124 | AddMsStructLayoutForRecord(RD); | |||
16125 | } | |||
16126 | } | |||
16127 | ||||
16128 | if (ModulePrivateLoc.isValid()) { | |||
16129 | if (isMemberSpecialization) | |||
16130 | Diag(New->getLocation(), diag::err_module_private_specialization) | |||
16131 | << 2 | |||
16132 | << FixItHint::CreateRemoval(ModulePrivateLoc); | |||
16133 | // __module_private__ does not apply to local classes. However, we only | |||
16134 | // diagnose this as an error when the declaration specifiers are | |||
16135 | // freestanding. Here, we just ignore the __module_private__. | |||
16136 | else if (!SearchDC->isFunctionOrMethod()) | |||
16137 | New->setModulePrivate(); | |||
16138 | } | |||
16139 | ||||
16140 | // If this is a specialization of a member class (of a class template), | |||
16141 | // check the specialization. | |||
16142 | if (isMemberSpecialization && CheckMemberSpecialization(New, Previous)) | |||
16143 | Invalid = true; | |||
16144 | ||||
16145 | // If we're declaring or defining a tag in function prototype scope in C, | |||
16146 | // note that this type can only be used within the function and add it to | |||
16147 | // the list of decls to inject into the function definition scope. | |||
16148 | if ((Name || Kind == TTK_Enum) && | |||
16149 | getNonFieldDeclScope(S)->isFunctionPrototypeScope()) { | |||
16150 | if (getLangOpts().CPlusPlus) { | |||
16151 | // C++ [dcl.fct]p6: | |||
16152 | // Types shall not be defined in return or parameter types. | |||
16153 | if (TUK == TUK_Definition && !IsTypeSpecifier) { | |||
16154 | Diag(Loc, diag::err_type_defined_in_param_type) | |||
16155 | << Name; | |||
16156 | Invalid = true; | |||
16157 | } | |||
16158 | } else if (!PrevDecl) { | |||
16159 | Diag(Loc, diag::warn_decl_in_param_list) << Context.getTagDeclType(New); | |||
16160 | } | |||
16161 | } | |||
16162 | ||||
16163 | if (Invalid) | |||
16164 | New->setInvalidDecl(); | |||
16165 | ||||
16166 | // Set the lexical context. If the tag has a C++ scope specifier, the | |||
16167 | // lexical context will be different from the semantic context. | |||
16168 | New->setLexicalDeclContext(CurContext); | |||
16169 | ||||
16170 | // Mark this as a friend decl if applicable. | |||
16171 | // In Microsoft mode, a friend declaration also acts as a forward | |||
16172 | // declaration so we always pass true to setObjectOfFriendDecl to make | |||
16173 | // the tag name visible. | |||
16174 | if (TUK == TUK_Friend) | |||
16175 | New->setObjectOfFriendDecl(getLangOpts().MSVCCompat); | |||
16176 | ||||
16177 | // Set the access specifier. | |||
16178 | if (!Invalid && SearchDC->isRecord()) | |||
16179 | SetMemberAccessSpecifier(New, PrevDecl, AS); | |||
16180 | ||||
16181 | if (PrevDecl) | |||
16182 | CheckRedeclarationModuleOwnership(New, PrevDecl); | |||
16183 | ||||
16184 | if (TUK == TUK_Definition && (!SkipBody || !SkipBody->ShouldSkip)) | |||
16185 | New->startDefinition(); | |||
16186 | ||||
16187 | ProcessDeclAttributeList(S, New, Attrs); | |||
16188 | AddPragmaAttributes(S, New); | |||
16189 | ||||
16190 | // If this has an identifier, add it to the scope stack. | |||
16191 | if (TUK == TUK_Friend) { | |||
16192 | // We might be replacing an existing declaration in the lookup tables; | |||
16193 | // if so, borrow its access specifier. | |||
16194 | if (PrevDecl) | |||
16195 | New->setAccess(PrevDecl->getAccess()); | |||
16196 | ||||
16197 | DeclContext *DC = New->getDeclContext()->getRedeclContext(); | |||
16198 | DC->makeDeclVisibleInContext(New); | |||
16199 | if (Name) // can be null along some error paths | |||
16200 | if (Scope *EnclosingScope = getScopeForDeclContext(S, DC)) | |||
16201 | PushOnScopeChains(New, EnclosingScope, /* AddToContext = */ false); | |||
16202 | } else if (Name) { | |||
16203 | S = getNonFieldDeclScope(S); | |||
16204 | PushOnScopeChains(New, S, true); | |||
16205 | } else { | |||
16206 | CurContext->addDecl(New); | |||
16207 | } | |||
16208 | ||||
16209 | // If this is the C FILE type, notify the AST context. | |||
16210 | if (IdentifierInfo *II = New->getIdentifier()) | |||
16211 | if (!New->isInvalidDecl() && | |||
16212 | New->getDeclContext()->getRedeclContext()->isTranslationUnit() && | |||
16213 | II->isStr("FILE")) | |||
16214 | Context.setFILEDecl(New); | |||
16215 | ||||
16216 | if (PrevDecl) | |||
16217 | mergeDeclAttributes(New, PrevDecl); | |||
16218 | ||||
16219 | if (auto *CXXRD = dyn_cast<CXXRecordDecl>(New)) | |||
16220 | inferGslOwnerPointerAttribute(CXXRD); | |||
16221 | ||||
16222 | // If there's a #pragma GCC visibility in scope, set the visibility of this | |||
16223 | // record. | |||
16224 | AddPushedVisibilityAttribute(New); | |||
16225 | ||||
16226 | if (isMemberSpecialization && !New->isInvalidDecl()) | |||
16227 | CompleteMemberSpecialization(New, Previous); | |||
16228 | ||||
16229 | OwnedDecl = true; | |||
16230 | // In C++, don't return an invalid declaration. We can't recover well from | |||
16231 | // the cases where we make the type anonymous. | |||
16232 | if (Invalid && getLangOpts().CPlusPlus) { | |||
16233 | if (New->isBeingDefined()) | |||
16234 | if (auto RD = dyn_cast<RecordDecl>(New)) | |||
16235 | RD->completeDefinition(); | |||
16236 | return nullptr; | |||
16237 | } else if (SkipBody && SkipBody->ShouldSkip) { | |||
16238 | return SkipBody->Previous; | |||
16239 | } else { | |||
16240 | return New; | |||
16241 | } | |||
16242 | } | |||
16243 | ||||
16244 | void Sema::ActOnTagStartDefinition(Scope *S, Decl *TagD) { | |||
16245 | AdjustDeclIfTemplate(TagD); | |||
16246 | TagDecl *Tag = cast<TagDecl>(TagD); | |||
16247 | ||||
16248 | // Enter the tag context. | |||
16249 | PushDeclContext(S, Tag); | |||
16250 | ||||
16251 | ActOnDocumentableDecl(TagD); | |||
16252 | ||||
16253 | // If there's a #pragma GCC visibility in scope, set the visibility of this | |||
16254 | // record. | |||
16255 | AddPushedVisibilityAttribute(Tag); | |||
16256 | } | |||
16257 | ||||
16258 | bool Sema::ActOnDuplicateDefinition(DeclSpec &DS, Decl *Prev, | |||
16259 | SkipBodyInfo &SkipBody) { | |||
16260 | if (!hasStructuralCompatLayout(Prev, SkipBody.New)) | |||
16261 | return false; | |||
16262 | ||||
16263 | // Make the previous decl visible. | |||
16264 | makeMergedDefinitionVisible(SkipBody.Previous); | |||
16265 | return true; | |||
16266 | } | |||
16267 | ||||
16268 | Decl *Sema::ActOnObjCContainerStartDefinition(Decl *IDecl) { | |||
16269 | assert(isa<ObjCContainerDecl>(IDecl) &&((isa<ObjCContainerDecl>(IDecl) && "ActOnObjCContainerStartDefinition - Not ObjCContainerDecl" ) ? static_cast<void> (0) : __assert_fail ("isa<ObjCContainerDecl>(IDecl) && \"ActOnObjCContainerStartDefinition - Not ObjCContainerDecl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16270, __PRETTY_FUNCTION__)) | |||
16270 | "ActOnObjCContainerStartDefinition - Not ObjCContainerDecl")((isa<ObjCContainerDecl>(IDecl) && "ActOnObjCContainerStartDefinition - Not ObjCContainerDecl" ) ? static_cast<void> (0) : __assert_fail ("isa<ObjCContainerDecl>(IDecl) && \"ActOnObjCContainerStartDefinition - Not ObjCContainerDecl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16270, __PRETTY_FUNCTION__)); | |||
16271 | DeclContext *OCD = cast<DeclContext>(IDecl); | |||
16272 | assert(OCD->getLexicalParent() == CurContext &&((OCD->getLexicalParent() == CurContext && "The next DeclContext should be lexically contained in the current one." ) ? static_cast<void> (0) : __assert_fail ("OCD->getLexicalParent() == CurContext && \"The next DeclContext should be lexically contained in the current one.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16273, __PRETTY_FUNCTION__)) | |||
16273 | "The next DeclContext should be lexically contained in the current one.")((OCD->getLexicalParent() == CurContext && "The next DeclContext should be lexically contained in the current one." ) ? static_cast<void> (0) : __assert_fail ("OCD->getLexicalParent() == CurContext && \"The next DeclContext should be lexically contained in the current one.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16273, __PRETTY_FUNCTION__)); | |||
16274 | CurContext = OCD; | |||
16275 | return IDecl; | |||
16276 | } | |||
16277 | ||||
16278 | void Sema::ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagD, | |||
16279 | SourceLocation FinalLoc, | |||
16280 | bool IsFinalSpelledSealed, | |||
16281 | SourceLocation LBraceLoc) { | |||
16282 | AdjustDeclIfTemplate(TagD); | |||
16283 | CXXRecordDecl *Record = cast<CXXRecordDecl>(TagD); | |||
16284 | ||||
16285 | FieldCollector->StartClass(); | |||
16286 | ||||
16287 | if (!Record->getIdentifier()) | |||
16288 | return; | |||
16289 | ||||
16290 | if (FinalLoc.isValid()) | |||
16291 | Record->addAttr(FinalAttr::Create( | |||
16292 | Context, FinalLoc, AttributeCommonInfo::AS_Keyword, | |||
16293 | static_cast<FinalAttr::Spelling>(IsFinalSpelledSealed))); | |||
16294 | ||||
16295 | // C++ [class]p2: | |||
16296 | // [...] The class-name is also inserted into the scope of the | |||
16297 | // class itself; this is known as the injected-class-name. For | |||
16298 | // purposes of access checking, the injected-class-name is treated | |||
16299 | // as if it were a public member name. | |||
16300 | CXXRecordDecl *InjectedClassName = CXXRecordDecl::Create( | |||
16301 | Context, Record->getTagKind(), CurContext, Record->getBeginLoc(), | |||
16302 | Record->getLocation(), Record->getIdentifier(), | |||
16303 | /*PrevDecl=*/nullptr, | |||
16304 | /*DelayTypeCreation=*/true); | |||
16305 | Context.getTypeDeclType(InjectedClassName, Record); | |||
16306 | InjectedClassName->setImplicit(); | |||
16307 | InjectedClassName->setAccess(AS_public); | |||
16308 | if (ClassTemplateDecl *Template = Record->getDescribedClassTemplate()) | |||
16309 | InjectedClassName->setDescribedClassTemplate(Template); | |||
16310 | PushOnScopeChains(InjectedClassName, S); | |||
16311 | assert(InjectedClassName->isInjectedClassName() &&((InjectedClassName->isInjectedClassName() && "Broken injected-class-name" ) ? static_cast<void> (0) : __assert_fail ("InjectedClassName->isInjectedClassName() && \"Broken injected-class-name\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16312, __PRETTY_FUNCTION__)) | |||
16312 | "Broken injected-class-name")((InjectedClassName->isInjectedClassName() && "Broken injected-class-name" ) ? static_cast<void> (0) : __assert_fail ("InjectedClassName->isInjectedClassName() && \"Broken injected-class-name\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16312, __PRETTY_FUNCTION__)); | |||
16313 | } | |||
16314 | ||||
16315 | void Sema::ActOnTagFinishDefinition(Scope *S, Decl *TagD, | |||
16316 | SourceRange BraceRange) { | |||
16317 | AdjustDeclIfTemplate(TagD); | |||
16318 | TagDecl *Tag = cast<TagDecl>(TagD); | |||
16319 | Tag->setBraceRange(BraceRange); | |||
16320 | ||||
16321 | // Make sure we "complete" the definition even it is invalid. | |||
16322 | if (Tag->isBeingDefined()) { | |||
16323 | assert(Tag->isInvalidDecl() && "We should already have completed it")((Tag->isInvalidDecl() && "We should already have completed it" ) ? static_cast<void> (0) : __assert_fail ("Tag->isInvalidDecl() && \"We should already have completed it\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16323, __PRETTY_FUNCTION__)); | |||
16324 | if (RecordDecl *RD = dyn_cast<RecordDecl>(Tag)) | |||
16325 | RD->completeDefinition(); | |||
16326 | } | |||
16327 | ||||
16328 | if (isa<CXXRecordDecl>(Tag)) { | |||
16329 | FieldCollector->FinishClass(); | |||
16330 | } | |||
16331 | ||||
16332 | // Exit this scope of this tag's definition. | |||
16333 | PopDeclContext(); | |||
16334 | ||||
16335 | if (getCurLexicalContext()->isObjCContainer() && | |||
16336 | Tag->getDeclContext()->isFileContext()) | |||
16337 | Tag->setTopLevelDeclInObjCContainer(); | |||
16338 | ||||
16339 | // Notify the consumer that we've defined a tag. | |||
16340 | if (!Tag->isInvalidDecl()) | |||
16341 | Consumer.HandleTagDeclDefinition(Tag); | |||
16342 | } | |||
16343 | ||||
16344 | void Sema::ActOnObjCContainerFinishDefinition() { | |||
16345 | // Exit this scope of this interface definition. | |||
16346 | PopDeclContext(); | |||
16347 | } | |||
16348 | ||||
16349 | void Sema::ActOnObjCTemporaryExitContainerContext(DeclContext *DC) { | |||
16350 | assert(DC == CurContext && "Mismatch of container contexts")((DC == CurContext && "Mismatch of container contexts" ) ? static_cast<void> (0) : __assert_fail ("DC == CurContext && \"Mismatch of container contexts\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16350, __PRETTY_FUNCTION__)); | |||
16351 | OriginalLexicalContext = DC; | |||
16352 | ActOnObjCContainerFinishDefinition(); | |||
16353 | } | |||
16354 | ||||
16355 | void Sema::ActOnObjCReenterContainerContext(DeclContext *DC) { | |||
16356 | ActOnObjCContainerStartDefinition(cast<Decl>(DC)); | |||
16357 | OriginalLexicalContext = nullptr; | |||
16358 | } | |||
16359 | ||||
16360 | void Sema::ActOnTagDefinitionError(Scope *S, Decl *TagD) { | |||
16361 | AdjustDeclIfTemplate(TagD); | |||
16362 | TagDecl *Tag = cast<TagDecl>(TagD); | |||
16363 | Tag->setInvalidDecl(); | |||
16364 | ||||
16365 | // Make sure we "complete" the definition even it is invalid. | |||
16366 | if (Tag->isBeingDefined()) { | |||
16367 | if (RecordDecl *RD = dyn_cast<RecordDecl>(Tag)) | |||
16368 | RD->completeDefinition(); | |||
16369 | } | |||
16370 | ||||
16371 | // We're undoing ActOnTagStartDefinition here, not | |||
16372 | // ActOnStartCXXMemberDeclarations, so we don't have to mess with | |||
16373 | // the FieldCollector. | |||
16374 | ||||
16375 | PopDeclContext(); | |||
16376 | } | |||
16377 | ||||
16378 | // Note that FieldName may be null for anonymous bitfields. | |||
16379 | ExprResult Sema::VerifyBitField(SourceLocation FieldLoc, | |||
16380 | IdentifierInfo *FieldName, | |||
16381 | QualType FieldTy, bool IsMsStruct, | |||
16382 | Expr *BitWidth, bool *ZeroWidth) { | |||
16383 | assert(BitWidth)((BitWidth) ? static_cast<void> (0) : __assert_fail ("BitWidth" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16383, __PRETTY_FUNCTION__)); | |||
16384 | if (BitWidth->containsErrors()) | |||
16385 | return ExprError(); | |||
16386 | ||||
16387 | // Default to true; that shouldn't confuse checks for emptiness | |||
16388 | if (ZeroWidth) | |||
16389 | *ZeroWidth = true; | |||
16390 | ||||
16391 | // C99 6.7.2.1p4 - verify the field type. | |||
16392 | // C++ 9.6p3: A bit-field shall have integral or enumeration type. | |||
16393 | if (!FieldTy->isDependentType() && !FieldTy->isIntegralOrEnumerationType()) { | |||
16394 | // Handle incomplete and sizeless types with a specific error. | |||
16395 | if (RequireCompleteSizedType(FieldLoc, FieldTy, | |||
16396 | diag::err_field_incomplete_or_sizeless)) | |||
16397 | return ExprError(); | |||
16398 | if (FieldName) | |||
16399 | return Diag(FieldLoc, diag::err_not_integral_type_bitfield) | |||
16400 | << FieldName << FieldTy << BitWidth->getSourceRange(); | |||
16401 | return Diag(FieldLoc, diag::err_not_integral_type_anon_bitfield) | |||
16402 | << FieldTy << BitWidth->getSourceRange(); | |||
16403 | } else if (DiagnoseUnexpandedParameterPack(const_cast<Expr *>(BitWidth), | |||
16404 | UPPC_BitFieldWidth)) | |||
16405 | return ExprError(); | |||
16406 | ||||
16407 | // If the bit-width is type- or value-dependent, don't try to check | |||
16408 | // it now. | |||
16409 | if (BitWidth->isValueDependent() || BitWidth->isTypeDependent()) | |||
16410 | return BitWidth; | |||
16411 | ||||
16412 | llvm::APSInt Value; | |||
16413 | ExprResult ICE = VerifyIntegerConstantExpression(BitWidth, &Value, AllowFold); | |||
16414 | if (ICE.isInvalid()) | |||
16415 | return ICE; | |||
16416 | BitWidth = ICE.get(); | |||
16417 | ||||
16418 | if (Value != 0 && ZeroWidth) | |||
16419 | *ZeroWidth = false; | |||
16420 | ||||
16421 | // Zero-width bitfield is ok for anonymous field. | |||
16422 | if (Value == 0 && FieldName) | |||
16423 | return Diag(FieldLoc, diag::err_bitfield_has_zero_width) << FieldName; | |||
16424 | ||||
16425 | if (Value.isSigned() && Value.isNegative()) { | |||
16426 | if (FieldName) | |||
16427 | return Diag(FieldLoc, diag::err_bitfield_has_negative_width) | |||
16428 | << FieldName << Value.toString(10); | |||
16429 | return Diag(FieldLoc, diag::err_anon_bitfield_has_negative_width) | |||
16430 | << Value.toString(10); | |||
16431 | } | |||
16432 | ||||
16433 | // The size of the bit-field must not exceed our maximum permitted object | |||
16434 | // size. | |||
16435 | if (Value.getActiveBits() > ConstantArrayType::getMaxSizeBits(Context)) { | |||
16436 | return Diag(FieldLoc, diag::err_bitfield_too_wide) | |||
16437 | << !FieldName << FieldName << Value.toString(10); | |||
16438 | } | |||
16439 | ||||
16440 | if (!FieldTy->isDependentType()) { | |||
16441 | uint64_t TypeStorageSize = Context.getTypeSize(FieldTy); | |||
16442 | uint64_t TypeWidth = Context.getIntWidth(FieldTy); | |||
16443 | bool BitfieldIsOverwide = Value.ugt(TypeWidth); | |||
16444 | ||||
16445 | // Over-wide bitfields are an error in C or when using the MSVC bitfield | |||
16446 | // ABI. | |||
16447 | bool CStdConstraintViolation = | |||
16448 | BitfieldIsOverwide && !getLangOpts().CPlusPlus; | |||
16449 | bool MSBitfieldViolation = | |||
16450 | Value.ugt(TypeStorageSize) && | |||
16451 | (IsMsStruct || Context.getTargetInfo().getCXXABI().isMicrosoft()); | |||
16452 | if (CStdConstraintViolation || MSBitfieldViolation) { | |||
16453 | unsigned DiagWidth = | |||
16454 | CStdConstraintViolation ? TypeWidth : TypeStorageSize; | |||
16455 | if (FieldName) | |||
16456 | return Diag(FieldLoc, diag::err_bitfield_width_exceeds_type_width) | |||
16457 | << FieldName << Value.toString(10) | |||
16458 | << !CStdConstraintViolation << DiagWidth; | |||
16459 | ||||
16460 | return Diag(FieldLoc, diag::err_anon_bitfield_width_exceeds_type_width) | |||
16461 | << Value.toString(10) << !CStdConstraintViolation | |||
16462 | << DiagWidth; | |||
16463 | } | |||
16464 | ||||
16465 | // Warn on types where the user might conceivably expect to get all | |||
16466 | // specified bits as value bits: that's all integral types other than | |||
16467 | // 'bool'. | |||
16468 | if (BitfieldIsOverwide && !FieldTy->isBooleanType() && FieldName) { | |||
16469 | Diag(FieldLoc, diag::warn_bitfield_width_exceeds_type_width) | |||
16470 | << FieldName << Value.toString(10) | |||
16471 | << (unsigned)TypeWidth; | |||
16472 | } | |||
16473 | } | |||
16474 | ||||
16475 | return BitWidth; | |||
16476 | } | |||
16477 | ||||
16478 | /// ActOnField - Each field of a C struct/union is passed into this in order | |||
16479 | /// to create a FieldDecl object for it. | |||
16480 | Decl *Sema::ActOnField(Scope *S, Decl *TagD, SourceLocation DeclStart, | |||
16481 | Declarator &D, Expr *BitfieldWidth) { | |||
16482 | FieldDecl *Res = HandleField(S, cast_or_null<RecordDecl>(TagD), | |||
16483 | DeclStart, D, static_cast<Expr*>(BitfieldWidth), | |||
16484 | /*InitStyle=*/ICIS_NoInit, AS_public); | |||
16485 | return Res; | |||
16486 | } | |||
16487 | ||||
16488 | /// HandleField - Analyze a field of a C struct or a C++ data member. | |||
16489 | /// | |||
16490 | FieldDecl *Sema::HandleField(Scope *S, RecordDecl *Record, | |||
16491 | SourceLocation DeclStart, | |||
16492 | Declarator &D, Expr *BitWidth, | |||
16493 | InClassInitStyle InitStyle, | |||
16494 | AccessSpecifier AS) { | |||
16495 | if (D.isDecompositionDeclarator()) { | |||
16496 | const DecompositionDeclarator &Decomp = D.getDecompositionDeclarator(); | |||
16497 | Diag(Decomp.getLSquareLoc(), diag::err_decomp_decl_context) | |||
16498 | << Decomp.getSourceRange(); | |||
16499 | return nullptr; | |||
16500 | } | |||
16501 | ||||
16502 | IdentifierInfo *II = D.getIdentifier(); | |||
16503 | SourceLocation Loc = DeclStart; | |||
16504 | if (II) Loc = D.getIdentifierLoc(); | |||
16505 | ||||
16506 | TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); | |||
16507 | QualType T = TInfo->getType(); | |||
16508 | if (getLangOpts().CPlusPlus) { | |||
16509 | CheckExtraCXXDefaultArguments(D); | |||
16510 | ||||
16511 | if (DiagnoseUnexpandedParameterPack(D.getIdentifierLoc(), TInfo, | |||
16512 | UPPC_DataMemberType)) { | |||
16513 | D.setInvalidType(); | |||
16514 | T = Context.IntTy; | |||
16515 | TInfo = Context.getTrivialTypeSourceInfo(T, Loc); | |||
16516 | } | |||
16517 | } | |||
16518 | ||||
16519 | DiagnoseFunctionSpecifiers(D.getDeclSpec()); | |||
16520 | ||||
16521 | if (D.getDeclSpec().isInlineSpecified()) | |||
16522 | Diag(D.getDeclSpec().getInlineSpecLoc(), diag::err_inline_non_function) | |||
16523 | << getLangOpts().CPlusPlus17; | |||
16524 | if (DeclSpec::TSCS TSCS = D.getDeclSpec().getThreadStorageClassSpec()) | |||
16525 | Diag(D.getDeclSpec().getThreadStorageClassSpecLoc(), | |||
16526 | diag::err_invalid_thread) | |||
16527 | << DeclSpec::getSpecifierName(TSCS); | |||
16528 | ||||
16529 | // Check to see if this name was declared as a member previously | |||
16530 | NamedDecl *PrevDecl = nullptr; | |||
16531 | LookupResult Previous(*this, II, Loc, LookupMemberName, | |||
16532 | ForVisibleRedeclaration); | |||
16533 | LookupName(Previous, S); | |||
16534 | switch (Previous.getResultKind()) { | |||
16535 | case LookupResult::Found: | |||
16536 | case LookupResult::FoundUnresolvedValue: | |||
16537 | PrevDecl = Previous.getAsSingle<NamedDecl>(); | |||
16538 | break; | |||
16539 | ||||
16540 | case LookupResult::FoundOverloaded: | |||
16541 | PrevDecl = Previous.getRepresentativeDecl(); | |||
16542 | break; | |||
16543 | ||||
16544 | case LookupResult::NotFound: | |||
16545 | case LookupResult::NotFoundInCurrentInstantiation: | |||
16546 | case LookupResult::Ambiguous: | |||
16547 | break; | |||
16548 | } | |||
16549 | Previous.suppressDiagnostics(); | |||
16550 | ||||
16551 | if (PrevDecl && PrevDecl->isTemplateParameter()) { | |||
16552 | // Maybe we will complain about the shadowed template parameter. | |||
16553 | DiagnoseTemplateParameterShadow(D.getIdentifierLoc(), PrevDecl); | |||
16554 | // Just pretend that we didn't see the previous declaration. | |||
16555 | PrevDecl = nullptr; | |||
16556 | } | |||
16557 | ||||
16558 | if (PrevDecl && !isDeclInScope(PrevDecl, Record, S)) | |||
16559 | PrevDecl = nullptr; | |||
16560 | ||||
16561 | bool Mutable | |||
16562 | = (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_mutable); | |||
16563 | SourceLocation TSSL = D.getBeginLoc(); | |||
16564 | FieldDecl *NewFD | |||
16565 | = CheckFieldDecl(II, T, TInfo, Record, Loc, Mutable, BitWidth, InitStyle, | |||
16566 | TSSL, AS, PrevDecl, &D); | |||
16567 | ||||
16568 | if (NewFD->isInvalidDecl()) | |||
16569 | Record->setInvalidDecl(); | |||
16570 | ||||
16571 | if (D.getDeclSpec().isModulePrivateSpecified()) | |||
16572 | NewFD->setModulePrivate(); | |||
16573 | ||||
16574 | if (NewFD->isInvalidDecl() && PrevDecl) { | |||
16575 | // Don't introduce NewFD into scope; there's already something | |||
16576 | // with the same name in the same scope. | |||
16577 | } else if (II) { | |||
16578 | PushOnScopeChains(NewFD, S); | |||
16579 | } else | |||
16580 | Record->addDecl(NewFD); | |||
16581 | ||||
16582 | return NewFD; | |||
16583 | } | |||
16584 | ||||
16585 | /// Build a new FieldDecl and check its well-formedness. | |||
16586 | /// | |||
16587 | /// This routine builds a new FieldDecl given the fields name, type, | |||
16588 | /// record, etc. \p PrevDecl should refer to any previous declaration | |||
16589 | /// with the same name and in the same scope as the field to be | |||
16590 | /// created. | |||
16591 | /// | |||
16592 | /// \returns a new FieldDecl. | |||
16593 | /// | |||
16594 | /// \todo The Declarator argument is a hack. It will be removed once | |||
16595 | FieldDecl *Sema::CheckFieldDecl(DeclarationName Name, QualType T, | |||
16596 | TypeSourceInfo *TInfo, | |||
16597 | RecordDecl *Record, SourceLocation Loc, | |||
16598 | bool Mutable, Expr *BitWidth, | |||
16599 | InClassInitStyle InitStyle, | |||
16600 | SourceLocation TSSL, | |||
16601 | AccessSpecifier AS, NamedDecl *PrevDecl, | |||
16602 | Declarator *D) { | |||
16603 | IdentifierInfo *II = Name.getAsIdentifierInfo(); | |||
16604 | bool InvalidDecl = false; | |||
16605 | if (D) InvalidDecl = D->isInvalidType(); | |||
16606 | ||||
16607 | // If we receive a broken type, recover by assuming 'int' and | |||
16608 | // marking this declaration as invalid. | |||
16609 | if (T.isNull() || T->containsErrors()) { | |||
16610 | InvalidDecl = true; | |||
16611 | T = Context.IntTy; | |||
16612 | } | |||
16613 | ||||
16614 | QualType EltTy = Context.getBaseElementType(T); | |||
16615 | if (!EltTy->isDependentType() && !EltTy->containsErrors()) { | |||
16616 | if (RequireCompleteSizedType(Loc, EltTy, | |||
16617 | diag::err_field_incomplete_or_sizeless)) { | |||
16618 | // Fields of incomplete type force their record to be invalid. | |||
16619 | Record->setInvalidDecl(); | |||
16620 | InvalidDecl = true; | |||
16621 | } else { | |||
16622 | NamedDecl *Def; | |||
16623 | EltTy->isIncompleteType(&Def); | |||
16624 | if (Def && Def->isInvalidDecl()) { | |||
16625 | Record->setInvalidDecl(); | |||
16626 | InvalidDecl = true; | |||
16627 | } | |||
16628 | } | |||
16629 | } | |||
16630 | ||||
16631 | // TR 18037 does not allow fields to be declared with address space | |||
16632 | if (T.hasAddressSpace() || T->isDependentAddressSpaceType() || | |||
16633 | T->getBaseElementTypeUnsafe()->isDependentAddressSpaceType()) { | |||
16634 | Diag(Loc, diag::err_field_with_address_space); | |||
16635 | Record->setInvalidDecl(); | |||
16636 | InvalidDecl = true; | |||
16637 | } | |||
16638 | ||||
16639 | if (LangOpts.OpenCL) { | |||
16640 | // OpenCL v1.2 s6.9b,r & OpenCL v2.0 s6.12.5 - The following types cannot be | |||
16641 | // used as structure or union field: image, sampler, event or block types. | |||
16642 | if (T->isEventT() || T->isImageType() || T->isSamplerT() || | |||
16643 | T->isBlockPointerType()) { | |||
16644 | Diag(Loc, diag::err_opencl_type_struct_or_union_field) << T; | |||
16645 | Record->setInvalidDecl(); | |||
16646 | InvalidDecl = true; | |||
16647 | } | |||
16648 | // OpenCL v1.2 s6.9.c: bitfields are not supported. | |||
16649 | if (BitWidth) { | |||
16650 | Diag(Loc, diag::err_opencl_bitfields); | |||
16651 | InvalidDecl = true; | |||
16652 | } | |||
16653 | } | |||
16654 | ||||
16655 | // Anonymous bit-fields cannot be cv-qualified (CWG 2229). | |||
16656 | if (!InvalidDecl && getLangOpts().CPlusPlus && !II && BitWidth && | |||
16657 | T.hasQualifiers()) { | |||
16658 | InvalidDecl = true; | |||
16659 | Diag(Loc, diag::err_anon_bitfield_qualifiers); | |||
16660 | } | |||
16661 | ||||
16662 | // C99 6.7.2.1p8: A member of a structure or union may have any type other | |||
16663 | // than a variably modified type. | |||
16664 | if (!InvalidDecl && T->isVariablyModifiedType()) { | |||
16665 | bool SizeIsNegative; | |||
16666 | llvm::APSInt Oversized; | |||
16667 | ||||
16668 | TypeSourceInfo *FixedTInfo = | |||
16669 | TryToFixInvalidVariablyModifiedTypeSourceInfo(TInfo, Context, | |||
16670 | SizeIsNegative, | |||
16671 | Oversized); | |||
16672 | if (FixedTInfo) { | |||
16673 | Diag(Loc, diag::ext_vla_folded_to_constant); | |||
16674 | TInfo = FixedTInfo; | |||
16675 | T = FixedTInfo->getType(); | |||
16676 | } else { | |||
16677 | if (SizeIsNegative) | |||
16678 | Diag(Loc, diag::err_typecheck_negative_array_size); | |||
16679 | else if (Oversized.getBoolValue()) | |||
16680 | Diag(Loc, diag::err_array_too_large) | |||
16681 | << Oversized.toString(10); | |||
16682 | else | |||
16683 | Diag(Loc, diag::err_typecheck_field_variable_size); | |||
16684 | InvalidDecl = true; | |||
16685 | } | |||
16686 | } | |||
16687 | ||||
16688 | // Fields can not have abstract class types | |||
16689 | if (!InvalidDecl && RequireNonAbstractType(Loc, T, | |||
16690 | diag::err_abstract_type_in_decl, | |||
16691 | AbstractFieldType)) | |||
16692 | InvalidDecl = true; | |||
16693 | ||||
16694 | bool ZeroWidth = false; | |||
16695 | if (InvalidDecl) | |||
16696 | BitWidth = nullptr; | |||
16697 | // If this is declared as a bit-field, check the bit-field. | |||
16698 | if (BitWidth) { | |||
16699 | BitWidth = VerifyBitField(Loc, II, T, Record->isMsStruct(Context), BitWidth, | |||
16700 | &ZeroWidth).get(); | |||
16701 | if (!BitWidth) { | |||
16702 | InvalidDecl = true; | |||
16703 | BitWidth = nullptr; | |||
16704 | ZeroWidth = false; | |||
16705 | } | |||
16706 | } | |||
16707 | ||||
16708 | // Check that 'mutable' is consistent with the type of the declaration. | |||
16709 | if (!InvalidDecl && Mutable) { | |||
16710 | unsigned DiagID = 0; | |||
16711 | if (T->isReferenceType()) | |||
16712 | DiagID = getLangOpts().MSVCCompat ? diag::ext_mutable_reference | |||
16713 | : diag::err_mutable_reference; | |||
16714 | else if (T.isConstQualified()) | |||
16715 | DiagID = diag::err_mutable_const; | |||
16716 | ||||
16717 | if (DiagID) { | |||
16718 | SourceLocation ErrLoc = Loc; | |||
16719 | if (D && D->getDeclSpec().getStorageClassSpecLoc().isValid()) | |||
16720 | ErrLoc = D->getDeclSpec().getStorageClassSpecLoc(); | |||
16721 | Diag(ErrLoc, DiagID); | |||
16722 | if (DiagID != diag::ext_mutable_reference) { | |||
16723 | Mutable = false; | |||
16724 | InvalidDecl = true; | |||
16725 | } | |||
16726 | } | |||
16727 | } | |||
16728 | ||||
16729 | // C++11 [class.union]p8 (DR1460): | |||
16730 | // At most one variant member of a union may have a | |||
16731 | // brace-or-equal-initializer. | |||
16732 | if (InitStyle != ICIS_NoInit) | |||
16733 | checkDuplicateDefaultInit(*this, cast<CXXRecordDecl>(Record), Loc); | |||
16734 | ||||
16735 | FieldDecl *NewFD = FieldDecl::Create(Context, Record, TSSL, Loc, II, T, TInfo, | |||
16736 | BitWidth, Mutable, InitStyle); | |||
16737 | if (InvalidDecl) | |||
16738 | NewFD->setInvalidDecl(); | |||
16739 | ||||
16740 | if (PrevDecl && !isa<TagDecl>(PrevDecl)) { | |||
16741 | Diag(Loc, diag::err_duplicate_member) << II; | |||
16742 | Diag(PrevDecl->getLocation(), diag::note_previous_declaration); | |||
16743 | NewFD->setInvalidDecl(); | |||
16744 | } | |||
16745 | ||||
16746 | if (!InvalidDecl && getLangOpts().CPlusPlus) { | |||
16747 | if (Record->isUnion()) { | |||
16748 | if (const RecordType *RT = EltTy->getAs<RecordType>()) { | |||
16749 | CXXRecordDecl* RDecl = cast<CXXRecordDecl>(RT->getDecl()); | |||
16750 | if (RDecl->getDefinition()) { | |||
16751 | // C++ [class.union]p1: An object of a class with a non-trivial | |||
16752 | // constructor, a non-trivial copy constructor, a non-trivial | |||
16753 | // destructor, or a non-trivial copy assignment operator | |||
16754 | // cannot be a member of a union, nor can an array of such | |||
16755 | // objects. | |||
16756 | if (CheckNontrivialField(NewFD)) | |||
16757 | NewFD->setInvalidDecl(); | |||
16758 | } | |||
16759 | } | |||
16760 | ||||
16761 | // C++ [class.union]p1: If a union contains a member of reference type, | |||
16762 | // the program is ill-formed, except when compiling with MSVC extensions | |||
16763 | // enabled. | |||
16764 | if (EltTy->isReferenceType()) { | |||
16765 | Diag(NewFD->getLocation(), getLangOpts().MicrosoftExt ? | |||
16766 | diag::ext_union_member_of_reference_type : | |||
16767 | diag::err_union_member_of_reference_type) | |||
16768 | << NewFD->getDeclName() << EltTy; | |||
16769 | if (!getLangOpts().MicrosoftExt) | |||
16770 | NewFD->setInvalidDecl(); | |||
16771 | } | |||
16772 | } | |||
16773 | } | |||
16774 | ||||
16775 | // FIXME: We need to pass in the attributes given an AST | |||
16776 | // representation, not a parser representation. | |||
16777 | if (D) { | |||
16778 | // FIXME: The current scope is almost... but not entirely... correct here. | |||
16779 | ProcessDeclAttributes(getCurScope(), NewFD, *D); | |||
16780 | ||||
16781 | if (NewFD->hasAttrs()) | |||
16782 | CheckAlignasUnderalignment(NewFD); | |||
16783 | } | |||
16784 | ||||
16785 | // In auto-retain/release, infer strong retension for fields of | |||
16786 | // retainable type. | |||
16787 | if (getLangOpts().ObjCAutoRefCount && inferObjCARCLifetime(NewFD)) | |||
16788 | NewFD->setInvalidDecl(); | |||
16789 | ||||
16790 | if (T.isObjCGCWeak()) | |||
16791 | Diag(Loc, diag::warn_attribute_weak_on_field); | |||
16792 | ||||
16793 | // PPC MMA non-pointer types are not allowed as field types. | |||
16794 | if (Context.getTargetInfo().getTriple().isPPC64() && | |||
16795 | CheckPPCMMAType(T, NewFD->getLocation())) | |||
16796 | NewFD->setInvalidDecl(); | |||
16797 | ||||
16798 | NewFD->setAccess(AS); | |||
16799 | return NewFD; | |||
16800 | } | |||
16801 | ||||
16802 | bool Sema::CheckNontrivialField(FieldDecl *FD) { | |||
16803 | assert(FD)((FD) ? static_cast<void> (0) : __assert_fail ("FD", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16803, __PRETTY_FUNCTION__)); | |||
16804 | assert(getLangOpts().CPlusPlus && "valid check only for C++")((getLangOpts().CPlusPlus && "valid check only for C++" ) ? static_cast<void> (0) : __assert_fail ("getLangOpts().CPlusPlus && \"valid check only for C++\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16804, __PRETTY_FUNCTION__)); | |||
16805 | ||||
16806 | if (FD->isInvalidDecl() || FD->getType()->isDependentType()) | |||
16807 | return false; | |||
16808 | ||||
16809 | QualType EltTy = Context.getBaseElementType(FD->getType()); | |||
16810 | if (const RecordType *RT = EltTy->getAs<RecordType>()) { | |||
16811 | CXXRecordDecl *RDecl = cast<CXXRecordDecl>(RT->getDecl()); | |||
16812 | if (RDecl->getDefinition()) { | |||
16813 | // We check for copy constructors before constructors | |||
16814 | // because otherwise we'll never get complaints about | |||
16815 | // copy constructors. | |||
16816 | ||||
16817 | CXXSpecialMember member = CXXInvalid; | |||
16818 | // We're required to check for any non-trivial constructors. Since the | |||
16819 | // implicit default constructor is suppressed if there are any | |||
16820 | // user-declared constructors, we just need to check that there is a | |||
16821 | // trivial default constructor and a trivial copy constructor. (We don't | |||
16822 | // worry about move constructors here, since this is a C++98 check.) | |||
16823 | if (RDecl->hasNonTrivialCopyConstructor()) | |||
16824 | member = CXXCopyConstructor; | |||
16825 | else if (!RDecl->hasTrivialDefaultConstructor()) | |||
16826 | member = CXXDefaultConstructor; | |||
16827 | else if (RDecl->hasNonTrivialCopyAssignment()) | |||
16828 | member = CXXCopyAssignment; | |||
16829 | else if (RDecl->hasNonTrivialDestructor()) | |||
16830 | member = CXXDestructor; | |||
16831 | ||||
16832 | if (member != CXXInvalid) { | |||
16833 | if (!getLangOpts().CPlusPlus11 && | |||
16834 | getLangOpts().ObjCAutoRefCount && RDecl->hasObjectMember()) { | |||
16835 | // Objective-C++ ARC: it is an error to have a non-trivial field of | |||
16836 | // a union. However, system headers in Objective-C programs | |||
16837 | // occasionally have Objective-C lifetime objects within unions, | |||
16838 | // and rather than cause the program to fail, we make those | |||
16839 | // members unavailable. | |||
16840 | SourceLocation Loc = FD->getLocation(); | |||
16841 | if (getSourceManager().isInSystemHeader(Loc)) { | |||
16842 | if (!FD->hasAttr<UnavailableAttr>()) | |||
16843 | FD->addAttr(UnavailableAttr::CreateImplicit(Context, "", | |||
16844 | UnavailableAttr::IR_ARCFieldWithOwnership, Loc)); | |||
16845 | return false; | |||
16846 | } | |||
16847 | } | |||
16848 | ||||
16849 | Diag(FD->getLocation(), getLangOpts().CPlusPlus11 ? | |||
16850 | diag::warn_cxx98_compat_nontrivial_union_or_anon_struct_member : | |||
16851 | diag::err_illegal_union_or_anon_struct_member) | |||
16852 | << FD->getParent()->isUnion() << FD->getDeclName() << member; | |||
16853 | DiagnoseNontrivial(RDecl, member); | |||
16854 | return !getLangOpts().CPlusPlus11; | |||
16855 | } | |||
16856 | } | |||
16857 | } | |||
16858 | ||||
16859 | return false; | |||
16860 | } | |||
16861 | ||||
16862 | /// TranslateIvarVisibility - Translate visibility from a token ID to an | |||
16863 | /// AST enum value. | |||
16864 | static ObjCIvarDecl::AccessControl | |||
16865 | TranslateIvarVisibility(tok::ObjCKeywordKind ivarVisibility) { | |||
16866 | switch (ivarVisibility) { | |||
16867 | default: llvm_unreachable("Unknown visitibility kind")::llvm::llvm_unreachable_internal("Unknown visitibility kind" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16867); | |||
16868 | case tok::objc_private: return ObjCIvarDecl::Private; | |||
16869 | case tok::objc_public: return ObjCIvarDecl::Public; | |||
16870 | case tok::objc_protected: return ObjCIvarDecl::Protected; | |||
16871 | case tok::objc_package: return ObjCIvarDecl::Package; | |||
16872 | } | |||
16873 | } | |||
16874 | ||||
16875 | /// ActOnIvar - Each ivar field of an objective-c class is passed into this | |||
16876 | /// in order to create an IvarDecl object for it. | |||
16877 | Decl *Sema::ActOnIvar(Scope *S, | |||
16878 | SourceLocation DeclStart, | |||
16879 | Declarator &D, Expr *BitfieldWidth, | |||
16880 | tok::ObjCKeywordKind Visibility) { | |||
16881 | ||||
16882 | IdentifierInfo *II = D.getIdentifier(); | |||
16883 | Expr *BitWidth = (Expr*)BitfieldWidth; | |||
16884 | SourceLocation Loc = DeclStart; | |||
16885 | if (II) Loc = D.getIdentifierLoc(); | |||
16886 | ||||
16887 | // FIXME: Unnamed fields can be handled in various different ways, for | |||
16888 | // example, unnamed unions inject all members into the struct namespace! | |||
16889 | ||||
16890 | TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); | |||
16891 | QualType T = TInfo->getType(); | |||
16892 | ||||
16893 | if (BitWidth) { | |||
16894 | // 6.7.2.1p3, 6.7.2.1p4 | |||
16895 | BitWidth = VerifyBitField(Loc, II, T, /*IsMsStruct*/false, BitWidth).get(); | |||
16896 | if (!BitWidth) | |||
16897 | D.setInvalidType(); | |||
16898 | } else { | |||
16899 | // Not a bitfield. | |||
16900 | ||||
16901 | // validate II. | |||
16902 | ||||
16903 | } | |||
16904 | if (T->isReferenceType()) { | |||
16905 | Diag(Loc, diag::err_ivar_reference_type); | |||
16906 | D.setInvalidType(); | |||
16907 | } | |||
16908 | // C99 6.7.2.1p8: A member of a structure or union may have any type other | |||
16909 | // than a variably modified type. | |||
16910 | else if (T->isVariablyModifiedType()) { | |||
16911 | Diag(Loc, diag::err_typecheck_ivar_variable_size); | |||
16912 | D.setInvalidType(); | |||
16913 | } | |||
16914 | ||||
16915 | // Get the visibility (access control) for this ivar. | |||
16916 | ObjCIvarDecl::AccessControl ac = | |||
16917 | Visibility != tok::objc_not_keyword ? TranslateIvarVisibility(Visibility) | |||
16918 | : ObjCIvarDecl::None; | |||
16919 | // Must set ivar's DeclContext to its enclosing interface. | |||
16920 | ObjCContainerDecl *EnclosingDecl = cast<ObjCContainerDecl>(CurContext); | |||
16921 | if (!EnclosingDecl || EnclosingDecl->isInvalidDecl()) | |||
16922 | return nullptr; | |||
16923 | ObjCContainerDecl *EnclosingContext; | |||
16924 | if (ObjCImplementationDecl *IMPDecl = | |||
16925 | dyn_cast<ObjCImplementationDecl>(EnclosingDecl)) { | |||
16926 | if (LangOpts.ObjCRuntime.isFragile()) { | |||
16927 | // Case of ivar declared in an implementation. Context is that of its class. | |||
16928 | EnclosingContext = IMPDecl->getClassInterface(); | |||
16929 | assert(EnclosingContext && "Implementation has no class interface!")((EnclosingContext && "Implementation has no class interface!" ) ? static_cast<void> (0) : __assert_fail ("EnclosingContext && \"Implementation has no class interface!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 16929, __PRETTY_FUNCTION__)); | |||
16930 | } | |||
16931 | else | |||
16932 | EnclosingContext = EnclosingDecl; | |||
16933 | } else { | |||
16934 | if (ObjCCategoryDecl *CDecl = | |||
16935 | dyn_cast<ObjCCategoryDecl>(EnclosingDecl)) { | |||
16936 | if (LangOpts.ObjCRuntime.isFragile() || !CDecl->IsClassExtension()) { | |||
16937 | Diag(Loc, diag::err_misplaced_ivar) << CDecl->IsClassExtension(); | |||
16938 | return nullptr; | |||
16939 | } | |||
16940 | } | |||
16941 | EnclosingContext = EnclosingDecl; | |||
16942 | } | |||
16943 | ||||
16944 | // Construct the decl. | |||
16945 | ObjCIvarDecl *NewID = ObjCIvarDecl::Create(Context, EnclosingContext, | |||
16946 | DeclStart, Loc, II, T, | |||
16947 | TInfo, ac, (Expr *)BitfieldWidth); | |||
16948 | ||||
16949 | if (II) { | |||
16950 | NamedDecl *PrevDecl = LookupSingleName(S, II, Loc, LookupMemberName, | |||
16951 | ForVisibleRedeclaration); | |||
16952 | if (PrevDecl && isDeclInScope(PrevDecl, EnclosingContext, S) | |||
16953 | && !isa<TagDecl>(PrevDecl)) { | |||
16954 | Diag(Loc, diag::err_duplicate_member) << II; | |||
16955 | Diag(PrevDecl->getLocation(), diag::note_previous_declaration); | |||
16956 | NewID->setInvalidDecl(); | |||
16957 | } | |||
16958 | } | |||
16959 | ||||
16960 | // Process attributes attached to the ivar. | |||
16961 | ProcessDeclAttributes(S, NewID, D); | |||
16962 | ||||
16963 | if (D.isInvalidType()) | |||
16964 | NewID->setInvalidDecl(); | |||
16965 | ||||
16966 | // In ARC, infer 'retaining' for ivars of retainable type. | |||
16967 | if (getLangOpts().ObjCAutoRefCount && inferObjCARCLifetime(NewID)) | |||
16968 | NewID->setInvalidDecl(); | |||
16969 | ||||
16970 | if (D.getDeclSpec().isModulePrivateSpecified()) | |||
16971 | NewID->setModulePrivate(); | |||
16972 | ||||
16973 | if (II) { | |||
16974 | // FIXME: When interfaces are DeclContexts, we'll need to add | |||
16975 | // these to the interface. | |||
16976 | S->AddDecl(NewID); | |||
16977 | IdResolver.AddDecl(NewID); | |||
16978 | } | |||
16979 | ||||
16980 | if (LangOpts.ObjCRuntime.isNonFragile() && | |||
16981 | !NewID->isInvalidDecl() && isa<ObjCInterfaceDecl>(EnclosingDecl)) | |||
16982 | Diag(Loc, diag::warn_ivars_in_interface); | |||
16983 | ||||
16984 | return NewID; | |||
16985 | } | |||
16986 | ||||
16987 | /// ActOnLastBitfield - This routine handles synthesized bitfields rules for | |||
16988 | /// class and class extensions. For every class \@interface and class | |||
16989 | /// extension \@interface, if the last ivar is a bitfield of any type, | |||
16990 | /// then add an implicit `char :0` ivar to the end of that interface. | |||
16991 | void Sema::ActOnLastBitfield(SourceLocation DeclLoc, | |||
16992 | SmallVectorImpl<Decl *> &AllIvarDecls) { | |||
16993 | if (LangOpts.ObjCRuntime.isFragile() || AllIvarDecls.empty()) | |||
16994 | return; | |||
16995 | ||||
16996 | Decl *ivarDecl = AllIvarDecls[AllIvarDecls.size()-1]; | |||
16997 | ObjCIvarDecl *Ivar = cast<ObjCIvarDecl>(ivarDecl); | |||
16998 | ||||
16999 | if (!Ivar->isBitField() || Ivar->isZeroLengthBitField(Context)) | |||
17000 | return; | |||
17001 | ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(CurContext); | |||
17002 | if (!ID) { | |||
17003 | if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(CurContext)) { | |||
17004 | if (!CD->IsClassExtension()) | |||
17005 | return; | |||
17006 | } | |||
17007 | // No need to add this to end of @implementation. | |||
17008 | else | |||
17009 | return; | |||
17010 | } | |||
17011 | // All conditions are met. Add a new bitfield to the tail end of ivars. | |||
17012 | llvm::APInt Zero(Context.getTypeSize(Context.IntTy), 0); | |||
17013 | Expr * BW = IntegerLiteral::Create(Context, Zero, Context.IntTy, DeclLoc); | |||
17014 | ||||
17015 | Ivar = ObjCIvarDecl::Create(Context, cast<ObjCContainerDecl>(CurContext), | |||
17016 | DeclLoc, DeclLoc, nullptr, | |||
17017 | Context.CharTy, | |||
17018 | Context.getTrivialTypeSourceInfo(Context.CharTy, | |||
17019 | DeclLoc), | |||
17020 | ObjCIvarDecl::Private, BW, | |||
17021 | true); | |||
17022 | AllIvarDecls.push_back(Ivar); | |||
17023 | } | |||
17024 | ||||
17025 | void Sema::ActOnFields(Scope *S, SourceLocation RecLoc, Decl *EnclosingDecl, | |||
17026 | ArrayRef<Decl *> Fields, SourceLocation LBrac, | |||
17027 | SourceLocation RBrac, | |||
17028 | const ParsedAttributesView &Attrs) { | |||
17029 | assert(EnclosingDecl && "missing record or interface decl")((EnclosingDecl && "missing record or interface decl" ) ? static_cast<void> (0) : __assert_fail ("EnclosingDecl && \"missing record or interface decl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17029, __PRETTY_FUNCTION__)); | |||
17030 | ||||
17031 | // If this is an Objective-C @implementation or category and we have | |||
17032 | // new fields here we should reset the layout of the interface since | |||
17033 | // it will now change. | |||
17034 | if (!Fields.empty() && isa<ObjCContainerDecl>(EnclosingDecl)) { | |||
17035 | ObjCContainerDecl *DC = cast<ObjCContainerDecl>(EnclosingDecl); | |||
17036 | switch (DC->getKind()) { | |||
17037 | default: break; | |||
17038 | case Decl::ObjCCategory: | |||
17039 | Context.ResetObjCLayout(cast<ObjCCategoryDecl>(DC)->getClassInterface()); | |||
17040 | break; | |||
17041 | case Decl::ObjCImplementation: | |||
17042 | Context. | |||
17043 | ResetObjCLayout(cast<ObjCImplementationDecl>(DC)->getClassInterface()); | |||
17044 | break; | |||
17045 | } | |||
17046 | } | |||
17047 | ||||
17048 | RecordDecl *Record = dyn_cast<RecordDecl>(EnclosingDecl); | |||
17049 | CXXRecordDecl *CXXRecord = dyn_cast<CXXRecordDecl>(EnclosingDecl); | |||
17050 | ||||
17051 | // Start counting up the number of named members; make sure to include | |||
17052 | // members of anonymous structs and unions in the total. | |||
17053 | unsigned NumNamedMembers = 0; | |||
17054 | if (Record) { | |||
17055 | for (const auto *I : Record->decls()) { | |||
17056 | if (const auto *IFD = dyn_cast<IndirectFieldDecl>(I)) | |||
17057 | if (IFD->getDeclName()) | |||
17058 | ++NumNamedMembers; | |||
17059 | } | |||
17060 | } | |||
17061 | ||||
17062 | // Verify that all the fields are okay. | |||
17063 | SmallVector<FieldDecl*, 32> RecFields; | |||
17064 | ||||
17065 | for (ArrayRef<Decl *>::iterator i = Fields.begin(), end = Fields.end(); | |||
17066 | i != end; ++i) { | |||
17067 | FieldDecl *FD = cast<FieldDecl>(*i); | |||
17068 | ||||
17069 | // Get the type for the field. | |||
17070 | const Type *FDTy = FD->getType().getTypePtr(); | |||
17071 | ||||
17072 | if (!FD->isAnonymousStructOrUnion()) { | |||
17073 | // Remember all fields written by the user. | |||
17074 | RecFields.push_back(FD); | |||
17075 | } | |||
17076 | ||||
17077 | // If the field is already invalid for some reason, don't emit more | |||
17078 | // diagnostics about it. | |||
17079 | if (FD->isInvalidDecl()) { | |||
17080 | EnclosingDecl->setInvalidDecl(); | |||
17081 | continue; | |||
17082 | } | |||
17083 | ||||
17084 | // C99 6.7.2.1p2: | |||
17085 | // A structure or union shall not contain a member with | |||
17086 | // incomplete or function type (hence, a structure shall not | |||
17087 | // contain an instance of itself, but may contain a pointer to | |||
17088 | // an instance of itself), except that the last member of a | |||
17089 | // structure with more than one named member may have incomplete | |||
17090 | // array type; such a structure (and any union containing, | |||
17091 | // possibly recursively, a member that is such a structure) | |||
17092 | // shall not be a member of a structure or an element of an | |||
17093 | // array. | |||
17094 | bool IsLastField = (i + 1 == Fields.end()); | |||
17095 | if (FDTy->isFunctionType()) { | |||
17096 | // Field declared as a function. | |||
17097 | Diag(FD->getLocation(), diag::err_field_declared_as_function) | |||
17098 | << FD->getDeclName(); | |||
17099 | FD->setInvalidDecl(); | |||
17100 | EnclosingDecl->setInvalidDecl(); | |||
17101 | continue; | |||
17102 | } else if (FDTy->isIncompleteArrayType() && | |||
17103 | (Record || isa<ObjCContainerDecl>(EnclosingDecl))) { | |||
17104 | if (Record) { | |||
17105 | // Flexible array member. | |||
17106 | // Microsoft and g++ is more permissive regarding flexible array. | |||
17107 | // It will accept flexible array in union and also | |||
17108 | // as the sole element of a struct/class. | |||
17109 | unsigned DiagID = 0; | |||
17110 | if (!Record->isUnion() && !IsLastField) { | |||
17111 | Diag(FD->getLocation(), diag::err_flexible_array_not_at_end) | |||
17112 | << FD->getDeclName() << FD->getType() << Record->getTagKind(); | |||
17113 | Diag((*(i + 1))->getLocation(), diag::note_next_field_declaration); | |||
17114 | FD->setInvalidDecl(); | |||
17115 | EnclosingDecl->setInvalidDecl(); | |||
17116 | continue; | |||
17117 | } else if (Record->isUnion()) | |||
17118 | DiagID = getLangOpts().MicrosoftExt | |||
17119 | ? diag::ext_flexible_array_union_ms | |||
17120 | : getLangOpts().CPlusPlus | |||
17121 | ? diag::ext_flexible_array_union_gnu | |||
17122 | : diag::err_flexible_array_union; | |||
17123 | else if (NumNamedMembers < 1) | |||
17124 | DiagID = getLangOpts().MicrosoftExt | |||
17125 | ? diag::ext_flexible_array_empty_aggregate_ms | |||
17126 | : getLangOpts().CPlusPlus | |||
17127 | ? diag::ext_flexible_array_empty_aggregate_gnu | |||
17128 | : diag::err_flexible_array_empty_aggregate; | |||
17129 | ||||
17130 | if (DiagID) | |||
17131 | Diag(FD->getLocation(), DiagID) << FD->getDeclName() | |||
17132 | << Record->getTagKind(); | |||
17133 | // While the layout of types that contain virtual bases is not specified | |||
17134 | // by the C++ standard, both the Itanium and Microsoft C++ ABIs place | |||
17135 | // virtual bases after the derived members. This would make a flexible | |||
17136 | // array member declared at the end of an object not adjacent to the end | |||
17137 | // of the type. | |||
17138 | if (CXXRecord && CXXRecord->getNumVBases() != 0) | |||
17139 | Diag(FD->getLocation(), diag::err_flexible_array_virtual_base) | |||
17140 | << FD->getDeclName() << Record->getTagKind(); | |||
17141 | if (!getLangOpts().C99) | |||
17142 | Diag(FD->getLocation(), diag::ext_c99_flexible_array_member) | |||
17143 | << FD->getDeclName() << Record->getTagKind(); | |||
17144 | ||||
17145 | // If the element type has a non-trivial destructor, we would not | |||
17146 | // implicitly destroy the elements, so disallow it for now. | |||
17147 | // | |||
17148 | // FIXME: GCC allows this. We should probably either implicitly delete | |||
17149 | // the destructor of the containing class, or just allow this. | |||
17150 | QualType BaseElem = Context.getBaseElementType(FD->getType()); | |||
17151 | if (!BaseElem->isDependentType() && BaseElem.isDestructedType()) { | |||
17152 | Diag(FD->getLocation(), diag::err_flexible_array_has_nontrivial_dtor) | |||
17153 | << FD->getDeclName() << FD->getType(); | |||
17154 | FD->setInvalidDecl(); | |||
17155 | EnclosingDecl->setInvalidDecl(); | |||
17156 | continue; | |||
17157 | } | |||
17158 | // Okay, we have a legal flexible array member at the end of the struct. | |||
17159 | Record->setHasFlexibleArrayMember(true); | |||
17160 | } else { | |||
17161 | // In ObjCContainerDecl ivars with incomplete array type are accepted, | |||
17162 | // unless they are followed by another ivar. That check is done | |||
17163 | // elsewhere, after synthesized ivars are known. | |||
17164 | } | |||
17165 | } else if (!FDTy->isDependentType() && | |||
17166 | RequireCompleteSizedType( | |||
17167 | FD->getLocation(), FD->getType(), | |||
17168 | diag::err_field_incomplete_or_sizeless)) { | |||
17169 | // Incomplete type | |||
17170 | FD->setInvalidDecl(); | |||
17171 | EnclosingDecl->setInvalidDecl(); | |||
17172 | continue; | |||
17173 | } else if (const RecordType *FDTTy = FDTy->getAs<RecordType>()) { | |||
17174 | if (Record && FDTTy->getDecl()->hasFlexibleArrayMember()) { | |||
17175 | // A type which contains a flexible array member is considered to be a | |||
17176 | // flexible array member. | |||
17177 | Record->setHasFlexibleArrayMember(true); | |||
17178 | if (!Record->isUnion()) { | |||
17179 | // If this is a struct/class and this is not the last element, reject | |||
17180 | // it. Note that GCC supports variable sized arrays in the middle of | |||
17181 | // structures. | |||
17182 | if (!IsLastField) | |||
17183 | Diag(FD->getLocation(), diag::ext_variable_sized_type_in_struct) | |||
17184 | << FD->getDeclName() << FD->getType(); | |||
17185 | else { | |||
17186 | // We support flexible arrays at the end of structs in | |||
17187 | // other structs as an extension. | |||
17188 | Diag(FD->getLocation(), diag::ext_flexible_array_in_struct) | |||
17189 | << FD->getDeclName(); | |||
17190 | } | |||
17191 | } | |||
17192 | } | |||
17193 | if (isa<ObjCContainerDecl>(EnclosingDecl) && | |||
17194 | RequireNonAbstractType(FD->getLocation(), FD->getType(), | |||
17195 | diag::err_abstract_type_in_decl, | |||
17196 | AbstractIvarType)) { | |||
17197 | // Ivars can not have abstract class types | |||
17198 | FD->setInvalidDecl(); | |||
17199 | } | |||
17200 | if (Record && FDTTy->getDecl()->hasObjectMember()) | |||
17201 | Record->setHasObjectMember(true); | |||
17202 | if (Record && FDTTy->getDecl()->hasVolatileMember()) | |||
17203 | Record->setHasVolatileMember(true); | |||
17204 | } else if (FDTy->isObjCObjectType()) { | |||
17205 | /// A field cannot be an Objective-c object | |||
17206 | Diag(FD->getLocation(), diag::err_statically_allocated_object) | |||
17207 | << FixItHint::CreateInsertion(FD->getLocation(), "*"); | |||
17208 | QualType T = Context.getObjCObjectPointerType(FD->getType()); | |||
17209 | FD->setType(T); | |||
17210 | } else if (Record && Record->isUnion() && | |||
17211 | FD->getType().hasNonTrivialObjCLifetime() && | |||
17212 | getSourceManager().isInSystemHeader(FD->getLocation()) && | |||
17213 | !getLangOpts().CPlusPlus && !FD->hasAttr<UnavailableAttr>() && | |||
17214 | (FD->getType().getObjCLifetime() != Qualifiers::OCL_Strong || | |||
17215 | !Context.hasDirectOwnershipQualifier(FD->getType()))) { | |||
17216 | // For backward compatibility, fields of C unions declared in system | |||
17217 | // headers that have non-trivial ObjC ownership qualifications are marked | |||
17218 | // as unavailable unless the qualifier is explicit and __strong. This can | |||
17219 | // break ABI compatibility between programs compiled with ARC and MRR, but | |||
17220 | // is a better option than rejecting programs using those unions under | |||
17221 | // ARC. | |||
17222 | FD->addAttr(UnavailableAttr::CreateImplicit( | |||
17223 | Context, "", UnavailableAttr::IR_ARCFieldWithOwnership, | |||
17224 | FD->getLocation())); | |||
17225 | } else if (getLangOpts().ObjC && | |||
17226 | getLangOpts().getGC() != LangOptions::NonGC && Record && | |||
17227 | !Record->hasObjectMember()) { | |||
17228 | if (FD->getType()->isObjCObjectPointerType() || | |||
17229 | FD->getType().isObjCGCStrong()) | |||
17230 | Record->setHasObjectMember(true); | |||
17231 | else if (Context.getAsArrayType(FD->getType())) { | |||
17232 | QualType BaseType = Context.getBaseElementType(FD->getType()); | |||
17233 | if (BaseType->isRecordType() && | |||
17234 | BaseType->castAs<RecordType>()->getDecl()->hasObjectMember()) | |||
17235 | Record->setHasObjectMember(true); | |||
17236 | else if (BaseType->isObjCObjectPointerType() || | |||
17237 | BaseType.isObjCGCStrong()) | |||
17238 | Record->setHasObjectMember(true); | |||
17239 | } | |||
17240 | } | |||
17241 | ||||
17242 | if (Record && !getLangOpts().CPlusPlus && | |||
17243 | !shouldIgnoreForRecordTriviality(FD)) { | |||
17244 | QualType FT = FD->getType(); | |||
17245 | if (FT.isNonTrivialToPrimitiveDefaultInitialize()) { | |||
17246 | Record->setNonTrivialToPrimitiveDefaultInitialize(true); | |||
17247 | if (FT.hasNonTrivialToPrimitiveDefaultInitializeCUnion() || | |||
17248 | Record->isUnion()) | |||
17249 | Record->setHasNonTrivialToPrimitiveDefaultInitializeCUnion(true); | |||
17250 | } | |||
17251 | QualType::PrimitiveCopyKind PCK = FT.isNonTrivialToPrimitiveCopy(); | |||
17252 | if (PCK != QualType::PCK_Trivial && PCK != QualType::PCK_VolatileTrivial) { | |||
17253 | Record->setNonTrivialToPrimitiveCopy(true); | |||
17254 | if (FT.hasNonTrivialToPrimitiveCopyCUnion() || Record->isUnion()) | |||
17255 | Record->setHasNonTrivialToPrimitiveCopyCUnion(true); | |||
17256 | } | |||
17257 | if (FT.isDestructedType()) { | |||
17258 | Record->setNonTrivialToPrimitiveDestroy(true); | |||
17259 | Record->setParamDestroyedInCallee(true); | |||
17260 | if (FT.hasNonTrivialToPrimitiveDestructCUnion() || Record->isUnion()) | |||
17261 | Record->setHasNonTrivialToPrimitiveDestructCUnion(true); | |||
17262 | } | |||
17263 | ||||
17264 | if (const auto *RT = FT->getAs<RecordType>()) { | |||
17265 | if (RT->getDecl()->getArgPassingRestrictions() == | |||
17266 | RecordDecl::APK_CanNeverPassInRegs) | |||
17267 | Record->setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs); | |||
17268 | } else if (FT.getQualifiers().getObjCLifetime() == Qualifiers::OCL_Weak) | |||
17269 | Record->setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs); | |||
17270 | } | |||
17271 | ||||
17272 | if (Record && FD->getType().isVolatileQualified()) | |||
17273 | Record->setHasVolatileMember(true); | |||
17274 | // Keep track of the number of named members. | |||
17275 | if (FD->getIdentifier()) | |||
17276 | ++NumNamedMembers; | |||
17277 | } | |||
17278 | ||||
17279 | // Okay, we successfully defined 'Record'. | |||
17280 | if (Record) { | |||
17281 | bool Completed = false; | |||
17282 | if (CXXRecord) { | |||
17283 | if (!CXXRecord->isInvalidDecl()) { | |||
17284 | // Set access bits correctly on the directly-declared conversions. | |||
17285 | for (CXXRecordDecl::conversion_iterator | |||
17286 | I = CXXRecord->conversion_begin(), | |||
17287 | E = CXXRecord->conversion_end(); I != E; ++I) | |||
17288 | I.setAccess((*I)->getAccess()); | |||
17289 | } | |||
17290 | ||||
17291 | // Add any implicitly-declared members to this class. | |||
17292 | AddImplicitlyDeclaredMembersToClass(CXXRecord); | |||
17293 | ||||
17294 | if (!CXXRecord->isDependentType()) { | |||
17295 | if (!CXXRecord->isInvalidDecl()) { | |||
17296 | // If we have virtual base classes, we may end up finding multiple | |||
17297 | // final overriders for a given virtual function. Check for this | |||
17298 | // problem now. | |||
17299 | if (CXXRecord->getNumVBases()) { | |||
17300 | CXXFinalOverriderMap FinalOverriders; | |||
17301 | CXXRecord->getFinalOverriders(FinalOverriders); | |||
17302 | ||||
17303 | for (CXXFinalOverriderMap::iterator M = FinalOverriders.begin(), | |||
17304 | MEnd = FinalOverriders.end(); | |||
17305 | M != MEnd; ++M) { | |||
17306 | for (OverridingMethods::iterator SO = M->second.begin(), | |||
17307 | SOEnd = M->second.end(); | |||
17308 | SO != SOEnd; ++SO) { | |||
17309 | assert(SO->second.size() > 0 &&((SO->second.size() > 0 && "Virtual function without overriding functions?" ) ? static_cast<void> (0) : __assert_fail ("SO->second.size() > 0 && \"Virtual function without overriding functions?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17310, __PRETTY_FUNCTION__)) | |||
17310 | "Virtual function without overriding functions?")((SO->second.size() > 0 && "Virtual function without overriding functions?" ) ? static_cast<void> (0) : __assert_fail ("SO->second.size() > 0 && \"Virtual function without overriding functions?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17310, __PRETTY_FUNCTION__)); | |||
17311 | if (SO->second.size() == 1) | |||
17312 | continue; | |||
17313 | ||||
17314 | // C++ [class.virtual]p2: | |||
17315 | // In a derived class, if a virtual member function of a base | |||
17316 | // class subobject has more than one final overrider the | |||
17317 | // program is ill-formed. | |||
17318 | Diag(Record->getLocation(), diag::err_multiple_final_overriders) | |||
17319 | << (const NamedDecl *)M->first << Record; | |||
17320 | Diag(M->first->getLocation(), | |||
17321 | diag::note_overridden_virtual_function); | |||
17322 | for (OverridingMethods::overriding_iterator | |||
17323 | OM = SO->second.begin(), | |||
17324 | OMEnd = SO->second.end(); | |||
17325 | OM != OMEnd; ++OM) | |||
17326 | Diag(OM->Method->getLocation(), diag::note_final_overrider) | |||
17327 | << (const NamedDecl *)M->first << OM->Method->getParent(); | |||
17328 | ||||
17329 | Record->setInvalidDecl(); | |||
17330 | } | |||
17331 | } | |||
17332 | CXXRecord->completeDefinition(&FinalOverriders); | |||
17333 | Completed = true; | |||
17334 | } | |||
17335 | } | |||
17336 | } | |||
17337 | } | |||
17338 | ||||
17339 | if (!Completed) | |||
17340 | Record->completeDefinition(); | |||
17341 | ||||
17342 | // Handle attributes before checking the layout. | |||
17343 | ProcessDeclAttributeList(S, Record, Attrs); | |||
17344 | ||||
17345 | // We may have deferred checking for a deleted destructor. Check now. | |||
17346 | if (CXXRecord) { | |||
17347 | auto *Dtor = CXXRecord->getDestructor(); | |||
17348 | if (Dtor && Dtor->isImplicit() && | |||
17349 | ShouldDeleteSpecialMember(Dtor, CXXDestructor)) { | |||
17350 | CXXRecord->setImplicitDestructorIsDeleted(); | |||
17351 | SetDeclDeleted(Dtor, CXXRecord->getLocation()); | |||
17352 | } | |||
17353 | } | |||
17354 | ||||
17355 | if (Record->hasAttrs()) { | |||
17356 | CheckAlignasUnderalignment(Record); | |||
17357 | ||||
17358 | if (const MSInheritanceAttr *IA = Record->getAttr<MSInheritanceAttr>()) | |||
17359 | checkMSInheritanceAttrOnDefinition(cast<CXXRecordDecl>(Record), | |||
17360 | IA->getRange(), IA->getBestCase(), | |||
17361 | IA->getInheritanceModel()); | |||
17362 | } | |||
17363 | ||||
17364 | // Check if the structure/union declaration is a type that can have zero | |||
17365 | // size in C. For C this is a language extension, for C++ it may cause | |||
17366 | // compatibility problems. | |||
17367 | bool CheckForZeroSize; | |||
17368 | if (!getLangOpts().CPlusPlus) { | |||
17369 | CheckForZeroSize = true; | |||
17370 | } else { | |||
17371 | // For C++ filter out types that cannot be referenced in C code. | |||
17372 | CXXRecordDecl *CXXRecord = cast<CXXRecordDecl>(Record); | |||
17373 | CheckForZeroSize = | |||
17374 | CXXRecord->getLexicalDeclContext()->isExternCContext() && | |||
17375 | !CXXRecord->isDependentType() && !inTemplateInstantiation() && | |||
17376 | CXXRecord->isCLike(); | |||
17377 | } | |||
17378 | if (CheckForZeroSize) { | |||
17379 | bool ZeroSize = true; | |||
17380 | bool IsEmpty = true; | |||
17381 | unsigned NonBitFields = 0; | |||
17382 | for (RecordDecl::field_iterator I = Record->field_begin(), | |||
17383 | E = Record->field_end(); | |||
17384 | (NonBitFields == 0 || ZeroSize) && I != E; ++I) { | |||
17385 | IsEmpty = false; | |||
17386 | if (I->isUnnamedBitfield()) { | |||
17387 | if (!I->isZeroLengthBitField(Context)) | |||
17388 | ZeroSize = false; | |||
17389 | } else { | |||
17390 | ++NonBitFields; | |||
17391 | QualType FieldType = I->getType(); | |||
17392 | if (FieldType->isIncompleteType() || | |||
17393 | !Context.getTypeSizeInChars(FieldType).isZero()) | |||
17394 | ZeroSize = false; | |||
17395 | } | |||
17396 | } | |||
17397 | ||||
17398 | // Empty structs are an extension in C (C99 6.7.2.1p7). They are | |||
17399 | // allowed in C++, but warn if its declaration is inside | |||
17400 | // extern "C" block. | |||
17401 | if (ZeroSize) { | |||
17402 | Diag(RecLoc, getLangOpts().CPlusPlus ? | |||
17403 | diag::warn_zero_size_struct_union_in_extern_c : | |||
17404 | diag::warn_zero_size_struct_union_compat) | |||
17405 | << IsEmpty << Record->isUnion() << (NonBitFields > 1); | |||
17406 | } | |||
17407 | ||||
17408 | // Structs without named members are extension in C (C99 6.7.2.1p7), | |||
17409 | // but are accepted by GCC. | |||
17410 | if (NonBitFields == 0 && !getLangOpts().CPlusPlus) { | |||
17411 | Diag(RecLoc, IsEmpty ? diag::ext_empty_struct_union : | |||
17412 | diag::ext_no_named_members_in_struct_union) | |||
17413 | << Record->isUnion(); | |||
17414 | } | |||
17415 | } | |||
17416 | } else { | |||
17417 | ObjCIvarDecl **ClsFields = | |||
17418 | reinterpret_cast<ObjCIvarDecl**>(RecFields.data()); | |||
17419 | if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(EnclosingDecl)) { | |||
17420 | ID->setEndOfDefinitionLoc(RBrac); | |||
17421 | // Add ivar's to class's DeclContext. | |||
17422 | for (unsigned i = 0, e = RecFields.size(); i != e; ++i) { | |||
17423 | ClsFields[i]->setLexicalDeclContext(ID); | |||
17424 | ID->addDecl(ClsFields[i]); | |||
17425 | } | |||
17426 | // Must enforce the rule that ivars in the base classes may not be | |||
17427 | // duplicates. | |||
17428 | if (ID->getSuperClass()) | |||
17429 | DiagnoseDuplicateIvars(ID, ID->getSuperClass()); | |||
17430 | } else if (ObjCImplementationDecl *IMPDecl = | |||
17431 | dyn_cast<ObjCImplementationDecl>(EnclosingDecl)) { | |||
17432 | assert(IMPDecl && "ActOnFields - missing ObjCImplementationDecl")((IMPDecl && "ActOnFields - missing ObjCImplementationDecl" ) ? static_cast<void> (0) : __assert_fail ("IMPDecl && \"ActOnFields - missing ObjCImplementationDecl\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17432, __PRETTY_FUNCTION__)); | |||
17433 | for (unsigned I = 0, N = RecFields.size(); I != N; ++I) | |||
17434 | // Ivar declared in @implementation never belongs to the implementation. | |||
17435 | // Only it is in implementation's lexical context. | |||
17436 | ClsFields[I]->setLexicalDeclContext(IMPDecl); | |||
17437 | CheckImplementationIvars(IMPDecl, ClsFields, RecFields.size(), RBrac); | |||
17438 | IMPDecl->setIvarLBraceLoc(LBrac); | |||
17439 | IMPDecl->setIvarRBraceLoc(RBrac); | |||
17440 | } else if (ObjCCategoryDecl *CDecl = | |||
17441 | dyn_cast<ObjCCategoryDecl>(EnclosingDecl)) { | |||
17442 | // case of ivars in class extension; all other cases have been | |||
17443 | // reported as errors elsewhere. | |||
17444 | // FIXME. Class extension does not have a LocEnd field. | |||
17445 | // CDecl->setLocEnd(RBrac); | |||
17446 | // Add ivar's to class extension's DeclContext. | |||
17447 | // Diagnose redeclaration of private ivars. | |||
17448 | ObjCInterfaceDecl *IDecl = CDecl->getClassInterface(); | |||
17449 | for (unsigned i = 0, e = RecFields.size(); i != e; ++i) { | |||
17450 | if (IDecl) { | |||
17451 | if (const ObjCIvarDecl *ClsIvar = | |||
17452 | IDecl->getIvarDecl(ClsFields[i]->getIdentifier())) { | |||
17453 | Diag(ClsFields[i]->getLocation(), | |||
17454 | diag::err_duplicate_ivar_declaration); | |||
17455 | Diag(ClsIvar->getLocation(), diag::note_previous_definition); | |||
17456 | continue; | |||
17457 | } | |||
17458 | for (const auto *Ext : IDecl->known_extensions()) { | |||
17459 | if (const ObjCIvarDecl *ClsExtIvar | |||
17460 | = Ext->getIvarDecl(ClsFields[i]->getIdentifier())) { | |||
17461 | Diag(ClsFields[i]->getLocation(), | |||
17462 | diag::err_duplicate_ivar_declaration); | |||
17463 | Diag(ClsExtIvar->getLocation(), diag::note_previous_definition); | |||
17464 | continue; | |||
17465 | } | |||
17466 | } | |||
17467 | } | |||
17468 | ClsFields[i]->setLexicalDeclContext(CDecl); | |||
17469 | CDecl->addDecl(ClsFields[i]); | |||
17470 | } | |||
17471 | CDecl->setIvarLBraceLoc(LBrac); | |||
17472 | CDecl->setIvarRBraceLoc(RBrac); | |||
17473 | } | |||
17474 | } | |||
17475 | } | |||
17476 | ||||
17477 | /// Determine whether the given integral value is representable within | |||
17478 | /// the given type T. | |||
17479 | static bool isRepresentableIntegerValue(ASTContext &Context, | |||
17480 | llvm::APSInt &Value, | |||
17481 | QualType T) { | |||
17482 | assert((T->isIntegralType(Context) || T->isEnumeralType()) &&(((T->isIntegralType(Context) || T->isEnumeralType()) && "Integral type required!") ? static_cast<void> (0) : __assert_fail ("(T->isIntegralType(Context) || T->isEnumeralType()) && \"Integral type required!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17483, __PRETTY_FUNCTION__)) | |||
17483 | "Integral type required!")(((T->isIntegralType(Context) || T->isEnumeralType()) && "Integral type required!") ? static_cast<void> (0) : __assert_fail ("(T->isIntegralType(Context) || T->isEnumeralType()) && \"Integral type required!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17483, __PRETTY_FUNCTION__)); | |||
17484 | unsigned BitWidth = Context.getIntWidth(T); | |||
17485 | ||||
17486 | if (Value.isUnsigned() || Value.isNonNegative()) { | |||
17487 | if (T->isSignedIntegerOrEnumerationType()) | |||
17488 | --BitWidth; | |||
17489 | return Value.getActiveBits() <= BitWidth; | |||
17490 | } | |||
17491 | return Value.getMinSignedBits() <= BitWidth; | |||
17492 | } | |||
17493 | ||||
17494 | // Given an integral type, return the next larger integral type | |||
17495 | // (or a NULL type of no such type exists). | |||
17496 | static QualType getNextLargerIntegralType(ASTContext &Context, QualType T) { | |||
17497 | // FIXME: Int128/UInt128 support, which also needs to be introduced into | |||
17498 | // enum checking below. | |||
17499 | assert((T->isIntegralType(Context) ||(((T->isIntegralType(Context) || T->isEnumeralType()) && "Integral type required!") ? static_cast<void> (0) : __assert_fail ("(T->isIntegralType(Context) || T->isEnumeralType()) && \"Integral type required!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17500, __PRETTY_FUNCTION__)) | |||
17500 | T->isEnumeralType()) && "Integral type required!")(((T->isIntegralType(Context) || T->isEnumeralType()) && "Integral type required!") ? static_cast<void> (0) : __assert_fail ("(T->isIntegralType(Context) || T->isEnumeralType()) && \"Integral type required!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17500, __PRETTY_FUNCTION__)); | |||
17501 | const unsigned NumTypes = 4; | |||
17502 | QualType SignedIntegralTypes[NumTypes] = { | |||
17503 | Context.ShortTy, Context.IntTy, Context.LongTy, Context.LongLongTy | |||
17504 | }; | |||
17505 | QualType UnsignedIntegralTypes[NumTypes] = { | |||
17506 | Context.UnsignedShortTy, Context.UnsignedIntTy, Context.UnsignedLongTy, | |||
17507 | Context.UnsignedLongLongTy | |||
17508 | }; | |||
17509 | ||||
17510 | unsigned BitWidth = Context.getTypeSize(T); | |||
17511 | QualType *Types = T->isSignedIntegerOrEnumerationType()? SignedIntegralTypes | |||
17512 | : UnsignedIntegralTypes; | |||
17513 | for (unsigned I = 0; I != NumTypes; ++I) | |||
17514 | if (Context.getTypeSize(Types[I]) > BitWidth) | |||
17515 | return Types[I]; | |||
17516 | ||||
17517 | return QualType(); | |||
17518 | } | |||
17519 | ||||
17520 | EnumConstantDecl *Sema::CheckEnumConstant(EnumDecl *Enum, | |||
17521 | EnumConstantDecl *LastEnumConst, | |||
17522 | SourceLocation IdLoc, | |||
17523 | IdentifierInfo *Id, | |||
17524 | Expr *Val) { | |||
17525 | unsigned IntWidth = Context.getTargetInfo().getIntWidth(); | |||
17526 | llvm::APSInt EnumVal(IntWidth); | |||
17527 | QualType EltTy; | |||
17528 | ||||
17529 | if (Val && DiagnoseUnexpandedParameterPack(Val, UPPC_EnumeratorValue)) | |||
17530 | Val = nullptr; | |||
17531 | ||||
17532 | if (Val) | |||
17533 | Val = DefaultLvalueConversion(Val).get(); | |||
17534 | ||||
17535 | if (Val) { | |||
17536 | if (Enum->isDependentType() || Val->isTypeDependent()) | |||
17537 | EltTy = Context.DependentTy; | |||
17538 | else { | |||
17539 | // FIXME: We don't allow folding in C++11 mode for an enum with a fixed | |||
17540 | // underlying type, but do allow it in all other contexts. | |||
17541 | if (getLangOpts().CPlusPlus11 && Enum->isFixed()) { | |||
17542 | // C++11 [dcl.enum]p5: If the underlying type is fixed, [...] the | |||
17543 | // constant-expression in the enumerator-definition shall be a converted | |||
17544 | // constant expression of the underlying type. | |||
17545 | EltTy = Enum->getIntegerType(); | |||
17546 | ExprResult Converted = | |||
17547 | CheckConvertedConstantExpression(Val, EltTy, EnumVal, | |||
17548 | CCEK_Enumerator); | |||
17549 | if (Converted.isInvalid()) | |||
17550 | Val = nullptr; | |||
17551 | else | |||
17552 | Val = Converted.get(); | |||
17553 | } else if (!Val->isValueDependent() && | |||
17554 | !(Val = | |||
17555 | VerifyIntegerConstantExpression(Val, &EnumVal, AllowFold) | |||
17556 | .get())) { | |||
17557 | // C99 6.7.2.2p2: Make sure we have an integer constant expression. | |||
17558 | } else { | |||
17559 | if (Enum->isComplete()) { | |||
17560 | EltTy = Enum->getIntegerType(); | |||
17561 | ||||
17562 | // In Obj-C and Microsoft mode, require the enumeration value to be | |||
17563 | // representable in the underlying type of the enumeration. In C++11, | |||
17564 | // we perform a non-narrowing conversion as part of converted constant | |||
17565 | // expression checking. | |||
17566 | if (!isRepresentableIntegerValue(Context, EnumVal, EltTy)) { | |||
17567 | if (Context.getTargetInfo() | |||
17568 | .getTriple() | |||
17569 | .isWindowsMSVCEnvironment()) { | |||
17570 | Diag(IdLoc, diag::ext_enumerator_too_large) << EltTy; | |||
17571 | } else { | |||
17572 | Diag(IdLoc, diag::err_enumerator_too_large) << EltTy; | |||
17573 | } | |||
17574 | } | |||
17575 | ||||
17576 | // Cast to the underlying type. | |||
17577 | Val = ImpCastExprToType(Val, EltTy, | |||
17578 | EltTy->isBooleanType() ? CK_IntegralToBoolean | |||
17579 | : CK_IntegralCast) | |||
17580 | .get(); | |||
17581 | } else if (getLangOpts().CPlusPlus) { | |||
17582 | // C++11 [dcl.enum]p5: | |||
17583 | // If the underlying type is not fixed, the type of each enumerator | |||
17584 | // is the type of its initializing value: | |||
17585 | // - If an initializer is specified for an enumerator, the | |||
17586 | // initializing value has the same type as the expression. | |||
17587 | EltTy = Val->getType(); | |||
17588 | } else { | |||
17589 | // C99 6.7.2.2p2: | |||
17590 | // The expression that defines the value of an enumeration constant | |||
17591 | // shall be an integer constant expression that has a value | |||
17592 | // representable as an int. | |||
17593 | ||||
17594 | // Complain if the value is not representable in an int. | |||
17595 | if (!isRepresentableIntegerValue(Context, EnumVal, Context.IntTy)) | |||
17596 | Diag(IdLoc, diag::ext_enum_value_not_int) | |||
17597 | << EnumVal.toString(10) << Val->getSourceRange() | |||
17598 | << (EnumVal.isUnsigned() || EnumVal.isNonNegative()); | |||
17599 | else if (!Context.hasSameType(Val->getType(), Context.IntTy)) { | |||
17600 | // Force the type of the expression to 'int'. | |||
17601 | Val = ImpCastExprToType(Val, Context.IntTy, CK_IntegralCast).get(); | |||
17602 | } | |||
17603 | EltTy = Val->getType(); | |||
17604 | } | |||
17605 | } | |||
17606 | } | |||
17607 | } | |||
17608 | ||||
17609 | if (!Val) { | |||
17610 | if (Enum->isDependentType()) | |||
17611 | EltTy = Context.DependentTy; | |||
17612 | else if (!LastEnumConst) { | |||
17613 | // C++0x [dcl.enum]p5: | |||
17614 | // If the underlying type is not fixed, the type of each enumerator | |||
17615 | // is the type of its initializing value: | |||
17616 | // - If no initializer is specified for the first enumerator, the | |||
17617 | // initializing value has an unspecified integral type. | |||
17618 | // | |||
17619 | // GCC uses 'int' for its unspecified integral type, as does | |||
17620 | // C99 6.7.2.2p3. | |||
17621 | if (Enum->isFixed()) { | |||
17622 | EltTy = Enum->getIntegerType(); | |||
17623 | } | |||
17624 | else { | |||
17625 | EltTy = Context.IntTy; | |||
17626 | } | |||
17627 | } else { | |||
17628 | // Assign the last value + 1. | |||
17629 | EnumVal = LastEnumConst->getInitVal(); | |||
17630 | ++EnumVal; | |||
17631 | EltTy = LastEnumConst->getType(); | |||
17632 | ||||
17633 | // Check for overflow on increment. | |||
17634 | if (EnumVal < LastEnumConst->getInitVal()) { | |||
17635 | // C++0x [dcl.enum]p5: | |||
17636 | // If the underlying type is not fixed, the type of each enumerator | |||
17637 | // is the type of its initializing value: | |||
17638 | // | |||
17639 | // - Otherwise the type of the initializing value is the same as | |||
17640 | // the type of the initializing value of the preceding enumerator | |||
17641 | // unless the incremented value is not representable in that type, | |||
17642 | // in which case the type is an unspecified integral type | |||
17643 | // sufficient to contain the incremented value. If no such type | |||
17644 | // exists, the program is ill-formed. | |||
17645 | QualType T = getNextLargerIntegralType(Context, EltTy); | |||
17646 | if (T.isNull() || Enum->isFixed()) { | |||
17647 | // There is no integral type larger enough to represent this | |||
17648 | // value. Complain, then allow the value to wrap around. | |||
17649 | EnumVal = LastEnumConst->getInitVal(); | |||
17650 | EnumVal = EnumVal.zext(EnumVal.getBitWidth() * 2); | |||
17651 | ++EnumVal; | |||
17652 | if (Enum->isFixed()) | |||
17653 | // When the underlying type is fixed, this is ill-formed. | |||
17654 | Diag(IdLoc, diag::err_enumerator_wrapped) | |||
17655 | << EnumVal.toString(10) | |||
17656 | << EltTy; | |||
17657 | else | |||
17658 | Diag(IdLoc, diag::ext_enumerator_increment_too_large) | |||
17659 | << EnumVal.toString(10); | |||
17660 | } else { | |||
17661 | EltTy = T; | |||
17662 | } | |||
17663 | ||||
17664 | // Retrieve the last enumerator's value, extent that type to the | |||
17665 | // type that is supposed to be large enough to represent the incremented | |||
17666 | // value, then increment. | |||
17667 | EnumVal = LastEnumConst->getInitVal(); | |||
17668 | EnumVal.setIsSigned(EltTy->isSignedIntegerOrEnumerationType()); | |||
17669 | EnumVal = EnumVal.zextOrTrunc(Context.getIntWidth(EltTy)); | |||
17670 | ++EnumVal; | |||
17671 | ||||
17672 | // If we're not in C++, diagnose the overflow of enumerator values, | |||
17673 | // which in C99 means that the enumerator value is not representable in | |||
17674 | // an int (C99 6.7.2.2p2). However, we support GCC's extension that | |||
17675 | // permits enumerator values that are representable in some larger | |||
17676 | // integral type. | |||
17677 | if (!getLangOpts().CPlusPlus && !T.isNull()) | |||
17678 | Diag(IdLoc, diag::warn_enum_value_overflow); | |||
17679 | } else if (!getLangOpts().CPlusPlus && | |||
17680 | !isRepresentableIntegerValue(Context, EnumVal, EltTy)) { | |||
17681 | // Enforce C99 6.7.2.2p2 even when we compute the next value. | |||
17682 | Diag(IdLoc, diag::ext_enum_value_not_int) | |||
17683 | << EnumVal.toString(10) << 1; | |||
17684 | } | |||
17685 | } | |||
17686 | } | |||
17687 | ||||
17688 | if (!EltTy->isDependentType()) { | |||
17689 | // Make the enumerator value match the signedness and size of the | |||
17690 | // enumerator's type. | |||
17691 | EnumVal = EnumVal.extOrTrunc(Context.getIntWidth(EltTy)); | |||
17692 | EnumVal.setIsSigned(EltTy->isSignedIntegerOrEnumerationType()); | |||
17693 | } | |||
17694 | ||||
17695 | return EnumConstantDecl::Create(Context, Enum, IdLoc, Id, EltTy, | |||
17696 | Val, EnumVal); | |||
17697 | } | |||
17698 | ||||
17699 | Sema::SkipBodyInfo Sema::shouldSkipAnonEnumBody(Scope *S, IdentifierInfo *II, | |||
17700 | SourceLocation IILoc) { | |||
17701 | if (!(getLangOpts().Modules || getLangOpts().ModulesLocalVisibility) || | |||
17702 | !getLangOpts().CPlusPlus) | |||
17703 | return SkipBodyInfo(); | |||
17704 | ||||
17705 | // We have an anonymous enum definition. Look up the first enumerator to | |||
17706 | // determine if we should merge the definition with an existing one and | |||
17707 | // skip the body. | |||
17708 | NamedDecl *PrevDecl = LookupSingleName(S, II, IILoc, LookupOrdinaryName, | |||
17709 | forRedeclarationInCurContext()); | |||
17710 | auto *PrevECD = dyn_cast_or_null<EnumConstantDecl>(PrevDecl); | |||
17711 | if (!PrevECD) | |||
17712 | return SkipBodyInfo(); | |||
17713 | ||||
17714 | EnumDecl *PrevED = cast<EnumDecl>(PrevECD->getDeclContext()); | |||
17715 | NamedDecl *Hidden; | |||
17716 | if (!PrevED->getDeclName() && !hasVisibleDefinition(PrevED, &Hidden)) { | |||
17717 | SkipBodyInfo Skip; | |||
17718 | Skip.Previous = Hidden; | |||
17719 | return Skip; | |||
17720 | } | |||
17721 | ||||
17722 | return SkipBodyInfo(); | |||
17723 | } | |||
17724 | ||||
17725 | Decl *Sema::ActOnEnumConstant(Scope *S, Decl *theEnumDecl, Decl *lastEnumConst, | |||
17726 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
17727 | const ParsedAttributesView &Attrs, | |||
17728 | SourceLocation EqualLoc, Expr *Val) { | |||
17729 | EnumDecl *TheEnumDecl = cast<EnumDecl>(theEnumDecl); | |||
17730 | EnumConstantDecl *LastEnumConst = | |||
17731 | cast_or_null<EnumConstantDecl>(lastEnumConst); | |||
17732 | ||||
17733 | // The scope passed in may not be a decl scope. Zip up the scope tree until | |||
17734 | // we find one that is. | |||
17735 | S = getNonFieldDeclScope(S); | |||
17736 | ||||
17737 | // Verify that there isn't already something declared with this name in this | |||
17738 | // scope. | |||
17739 | LookupResult R(*this, Id, IdLoc, LookupOrdinaryName, ForVisibleRedeclaration); | |||
17740 | LookupName(R, S); | |||
17741 | NamedDecl *PrevDecl = R.getAsSingle<NamedDecl>(); | |||
17742 | ||||
17743 | if (PrevDecl && PrevDecl->isTemplateParameter()) { | |||
17744 | // Maybe we will complain about the shadowed template parameter. | |||
17745 | DiagnoseTemplateParameterShadow(IdLoc, PrevDecl); | |||
17746 | // Just pretend that we didn't see the previous declaration. | |||
17747 | PrevDecl = nullptr; | |||
17748 | } | |||
17749 | ||||
17750 | // C++ [class.mem]p15: | |||
17751 | // If T is the name of a class, then each of the following shall have a name | |||
17752 | // different from T: | |||
17753 | // - every enumerator of every member of class T that is an unscoped | |||
17754 | // enumerated type | |||
17755 | if (getLangOpts().CPlusPlus && !TheEnumDecl->isScoped()) | |||
17756 | DiagnoseClassNameShadow(TheEnumDecl->getDeclContext(), | |||
17757 | DeclarationNameInfo(Id, IdLoc)); | |||
17758 | ||||
17759 | EnumConstantDecl *New = | |||
17760 | CheckEnumConstant(TheEnumDecl, LastEnumConst, IdLoc, Id, Val); | |||
17761 | if (!New) | |||
17762 | return nullptr; | |||
17763 | ||||
17764 | if (PrevDecl) { | |||
17765 | if (!TheEnumDecl->isScoped() && isa<ValueDecl>(PrevDecl)) { | |||
17766 | // Check for other kinds of shadowing not already handled. | |||
17767 | CheckShadow(New, PrevDecl, R); | |||
17768 | } | |||
17769 | ||||
17770 | // When in C++, we may get a TagDecl with the same name; in this case the | |||
17771 | // enum constant will 'hide' the tag. | |||
17772 | assert((getLangOpts().CPlusPlus || !isa<TagDecl>(PrevDecl)) &&(((getLangOpts().CPlusPlus || !isa<TagDecl>(PrevDecl)) && "Received TagDecl when not in C++!") ? static_cast<void> (0) : __assert_fail ("(getLangOpts().CPlusPlus || !isa<TagDecl>(PrevDecl)) && \"Received TagDecl when not in C++!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17773, __PRETTY_FUNCTION__)) | |||
17773 | "Received TagDecl when not in C++!")(((getLangOpts().CPlusPlus || !isa<TagDecl>(PrevDecl)) && "Received TagDecl when not in C++!") ? static_cast<void> (0) : __assert_fail ("(getLangOpts().CPlusPlus || !isa<TagDecl>(PrevDecl)) && \"Received TagDecl when not in C++!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17773, __PRETTY_FUNCTION__)); | |||
17774 | if (!isa<TagDecl>(PrevDecl) && isDeclInScope(PrevDecl, CurContext, S)) { | |||
17775 | if (isa<EnumConstantDecl>(PrevDecl)) | |||
17776 | Diag(IdLoc, diag::err_redefinition_of_enumerator) << Id; | |||
17777 | else | |||
17778 | Diag(IdLoc, diag::err_redefinition) << Id; | |||
17779 | notePreviousDefinition(PrevDecl, IdLoc); | |||
17780 | return nullptr; | |||
17781 | } | |||
17782 | } | |||
17783 | ||||
17784 | // Process attributes. | |||
17785 | ProcessDeclAttributeList(S, New, Attrs); | |||
17786 | AddPragmaAttributes(S, New); | |||
17787 | ||||
17788 | // Register this decl in the current scope stack. | |||
17789 | New->setAccess(TheEnumDecl->getAccess()); | |||
17790 | PushOnScopeChains(New, S); | |||
17791 | ||||
17792 | ActOnDocumentableDecl(New); | |||
17793 | ||||
17794 | return New; | |||
17795 | } | |||
17796 | ||||
17797 | // Returns true when the enum initial expression does not trigger the | |||
17798 | // duplicate enum warning. A few common cases are exempted as follows: | |||
17799 | // Element2 = Element1 | |||
17800 | // Element2 = Element1 + 1 | |||
17801 | // Element2 = Element1 - 1 | |||
17802 | // Where Element2 and Element1 are from the same enum. | |||
17803 | static bool ValidDuplicateEnum(EnumConstantDecl *ECD, EnumDecl *Enum) { | |||
17804 | Expr *InitExpr = ECD->getInitExpr(); | |||
17805 | if (!InitExpr) | |||
17806 | return true; | |||
17807 | InitExpr = InitExpr->IgnoreImpCasts(); | |||
17808 | ||||
17809 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(InitExpr)) { | |||
17810 | if (!BO->isAdditiveOp()) | |||
17811 | return true; | |||
17812 | IntegerLiteral *IL = dyn_cast<IntegerLiteral>(BO->getRHS()); | |||
17813 | if (!IL) | |||
17814 | return true; | |||
17815 | if (IL->getValue() != 1) | |||
17816 | return true; | |||
17817 | ||||
17818 | InitExpr = BO->getLHS(); | |||
17819 | } | |||
17820 | ||||
17821 | // This checks if the elements are from the same enum. | |||
17822 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(InitExpr); | |||
17823 | if (!DRE) | |||
17824 | return true; | |||
17825 | ||||
17826 | EnumConstantDecl *EnumConstant = dyn_cast<EnumConstantDecl>(DRE->getDecl()); | |||
17827 | if (!EnumConstant) | |||
17828 | return true; | |||
17829 | ||||
17830 | if (cast<EnumDecl>(TagDecl::castFromDeclContext(ECD->getDeclContext())) != | |||
17831 | Enum) | |||
17832 | return true; | |||
17833 | ||||
17834 | return false; | |||
17835 | } | |||
17836 | ||||
17837 | // Emits a warning when an element is implicitly set a value that | |||
17838 | // a previous element has already been set to. | |||
17839 | static void CheckForDuplicateEnumValues(Sema &S, ArrayRef<Decl *> Elements, | |||
17840 | EnumDecl *Enum, QualType EnumType) { | |||
17841 | // Avoid anonymous enums | |||
17842 | if (!Enum->getIdentifier()) | |||
17843 | return; | |||
17844 | ||||
17845 | // Only check for small enums. | |||
17846 | if (Enum->getNumPositiveBits() > 63 || Enum->getNumNegativeBits() > 64) | |||
17847 | return; | |||
17848 | ||||
17849 | if (S.Diags.isIgnored(diag::warn_duplicate_enum_values, Enum->getLocation())) | |||
17850 | return; | |||
17851 | ||||
17852 | typedef SmallVector<EnumConstantDecl *, 3> ECDVector; | |||
17853 | typedef SmallVector<std::unique_ptr<ECDVector>, 3> DuplicatesVector; | |||
17854 | ||||
17855 | typedef llvm::PointerUnion<EnumConstantDecl*, ECDVector*> DeclOrVector; | |||
17856 | ||||
17857 | // DenseMaps cannot contain the all ones int64_t value, so use unordered_map. | |||
17858 | typedef std::unordered_map<int64_t, DeclOrVector> ValueToVectorMap; | |||
17859 | ||||
17860 | // Use int64_t as a key to avoid needing special handling for map keys. | |||
17861 | auto EnumConstantToKey = [](const EnumConstantDecl *D) { | |||
17862 | llvm::APSInt Val = D->getInitVal(); | |||
17863 | return Val.isSigned() ? Val.getSExtValue() : Val.getZExtValue(); | |||
17864 | }; | |||
17865 | ||||
17866 | DuplicatesVector DupVector; | |||
17867 | ValueToVectorMap EnumMap; | |||
17868 | ||||
17869 | // Populate the EnumMap with all values represented by enum constants without | |||
17870 | // an initializer. | |||
17871 | for (auto *Element : Elements) { | |||
17872 | EnumConstantDecl *ECD = cast_or_null<EnumConstantDecl>(Element); | |||
17873 | ||||
17874 | // Null EnumConstantDecl means a previous diagnostic has been emitted for | |||
17875 | // this constant. Skip this enum since it may be ill-formed. | |||
17876 | if (!ECD) { | |||
17877 | return; | |||
17878 | } | |||
17879 | ||||
17880 | // Constants with initalizers are handled in the next loop. | |||
17881 | if (ECD->getInitExpr()) | |||
17882 | continue; | |||
17883 | ||||
17884 | // Duplicate values are handled in the next loop. | |||
17885 | EnumMap.insert({EnumConstantToKey(ECD), ECD}); | |||
17886 | } | |||
17887 | ||||
17888 | if (EnumMap.size() == 0) | |||
17889 | return; | |||
17890 | ||||
17891 | // Create vectors for any values that has duplicates. | |||
17892 | for (auto *Element : Elements) { | |||
17893 | // The last loop returned if any constant was null. | |||
17894 | EnumConstantDecl *ECD = cast<EnumConstantDecl>(Element); | |||
17895 | if (!ValidDuplicateEnum(ECD, Enum)) | |||
17896 | continue; | |||
17897 | ||||
17898 | auto Iter = EnumMap.find(EnumConstantToKey(ECD)); | |||
17899 | if (Iter == EnumMap.end()) | |||
17900 | continue; | |||
17901 | ||||
17902 | DeclOrVector& Entry = Iter->second; | |||
17903 | if (EnumConstantDecl *D = Entry.dyn_cast<EnumConstantDecl*>()) { | |||
17904 | // Ensure constants are different. | |||
17905 | if (D == ECD) | |||
17906 | continue; | |||
17907 | ||||
17908 | // Create new vector and push values onto it. | |||
17909 | auto Vec = std::make_unique<ECDVector>(); | |||
17910 | Vec->push_back(D); | |||
17911 | Vec->push_back(ECD); | |||
17912 | ||||
17913 | // Update entry to point to the duplicates vector. | |||
17914 | Entry = Vec.get(); | |||
17915 | ||||
17916 | // Store the vector somewhere we can consult later for quick emission of | |||
17917 | // diagnostics. | |||
17918 | DupVector.emplace_back(std::move(Vec)); | |||
17919 | continue; | |||
17920 | } | |||
17921 | ||||
17922 | ECDVector *Vec = Entry.get<ECDVector*>(); | |||
17923 | // Make sure constants are not added more than once. | |||
17924 | if (*Vec->begin() == ECD) | |||
17925 | continue; | |||
17926 | ||||
17927 | Vec->push_back(ECD); | |||
17928 | } | |||
17929 | ||||
17930 | // Emit diagnostics. | |||
17931 | for (const auto &Vec : DupVector) { | |||
17932 | assert(Vec->size() > 1 && "ECDVector should have at least 2 elements.")((Vec->size() > 1 && "ECDVector should have at least 2 elements." ) ? static_cast<void> (0) : __assert_fail ("Vec->size() > 1 && \"ECDVector should have at least 2 elements.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17932, __PRETTY_FUNCTION__)); | |||
17933 | ||||
17934 | // Emit warning for one enum constant. | |||
17935 | auto *FirstECD = Vec->front(); | |||
17936 | S.Diag(FirstECD->getLocation(), diag::warn_duplicate_enum_values) | |||
17937 | << FirstECD << FirstECD->getInitVal().toString(10) | |||
17938 | << FirstECD->getSourceRange(); | |||
17939 | ||||
17940 | // Emit one note for each of the remaining enum constants with | |||
17941 | // the same value. | |||
17942 | for (auto *ECD : llvm::make_range(Vec->begin() + 1, Vec->end())) | |||
17943 | S.Diag(ECD->getLocation(), diag::note_duplicate_element) | |||
17944 | << ECD << ECD->getInitVal().toString(10) | |||
17945 | << ECD->getSourceRange(); | |||
17946 | } | |||
17947 | } | |||
17948 | ||||
17949 | bool Sema::IsValueInFlagEnum(const EnumDecl *ED, const llvm::APInt &Val, | |||
17950 | bool AllowMask) const { | |||
17951 | assert(ED->isClosedFlag() && "looking for value in non-flag or open enum")((ED->isClosedFlag() && "looking for value in non-flag or open enum" ) ? static_cast<void> (0) : __assert_fail ("ED->isClosedFlag() && \"looking for value in non-flag or open enum\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17951, __PRETTY_FUNCTION__)); | |||
17952 | assert(ED->isCompleteDefinition() && "expected enum definition")((ED->isCompleteDefinition() && "expected enum definition" ) ? static_cast<void> (0) : __assert_fail ("ED->isCompleteDefinition() && \"expected enum definition\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 17952, __PRETTY_FUNCTION__)); | |||
17953 | ||||
17954 | auto R = FlagBitsCache.insert(std::make_pair(ED, llvm::APInt())); | |||
17955 | llvm::APInt &FlagBits = R.first->second; | |||
17956 | ||||
17957 | if (R.second) { | |||
17958 | for (auto *E : ED->enumerators()) { | |||
17959 | const auto &EVal = E->getInitVal(); | |||
17960 | // Only single-bit enumerators introduce new flag values. | |||
17961 | if (EVal.isPowerOf2()) | |||
17962 | FlagBits = FlagBits.zextOrSelf(EVal.getBitWidth()) | EVal; | |||
17963 | } | |||
17964 | } | |||
17965 | ||||
17966 | // A value is in a flag enum if either its bits are a subset of the enum's | |||
17967 | // flag bits (the first condition) or we are allowing masks and the same is | |||
17968 | // true of its complement (the second condition). When masks are allowed, we | |||
17969 | // allow the common idiom of ~(enum1 | enum2) to be a valid enum value. | |||
17970 | // | |||
17971 | // While it's true that any value could be used as a mask, the assumption is | |||
17972 | // that a mask will have all of the insignificant bits set. Anything else is | |||
17973 | // likely a logic error. | |||
17974 | llvm::APInt FlagMask = ~FlagBits.zextOrTrunc(Val.getBitWidth()); | |||
17975 | return !(FlagMask & Val) || (AllowMask && !(FlagMask & ~Val)); | |||
17976 | } | |||
17977 | ||||
17978 | void Sema::ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange, | |||
17979 | Decl *EnumDeclX, ArrayRef<Decl *> Elements, Scope *S, | |||
17980 | const ParsedAttributesView &Attrs) { | |||
17981 | EnumDecl *Enum = cast<EnumDecl>(EnumDeclX); | |||
17982 | QualType EnumType = Context.getTypeDeclType(Enum); | |||
17983 | ||||
17984 | ProcessDeclAttributeList(S, Enum, Attrs); | |||
17985 | ||||
17986 | if (Enum->isDependentType()) { | |||
17987 | for (unsigned i = 0, e = Elements.size(); i != e; ++i) { | |||
17988 | EnumConstantDecl *ECD = | |||
17989 | cast_or_null<EnumConstantDecl>(Elements[i]); | |||
17990 | if (!ECD) continue; | |||
17991 | ||||
17992 | ECD->setType(EnumType); | |||
17993 | } | |||
17994 | ||||
17995 | Enum->completeDefinition(Context.DependentTy, Context.DependentTy, 0, 0); | |||
17996 | return; | |||
17997 | } | |||
17998 | ||||
17999 | // TODO: If the result value doesn't fit in an int, it must be a long or long | |||
18000 | // long value. ISO C does not support this, but GCC does as an extension, | |||
18001 | // emit a warning. | |||
18002 | unsigned IntWidth = Context.getTargetInfo().getIntWidth(); | |||
18003 | unsigned CharWidth = Context.getTargetInfo().getCharWidth(); | |||
18004 | unsigned ShortWidth = Context.getTargetInfo().getShortWidth(); | |||
18005 | ||||
18006 | // Verify that all the values are okay, compute the size of the values, and | |||
18007 | // reverse the list. | |||
18008 | unsigned NumNegativeBits = 0; | |||
18009 | unsigned NumPositiveBits = 0; | |||
18010 | ||||
18011 | // Keep track of whether all elements have type int. | |||
18012 | bool AllElementsInt = true; | |||
18013 | ||||
18014 | for (unsigned i = 0, e = Elements.size(); i != e; ++i) { | |||
18015 | EnumConstantDecl *ECD = | |||
18016 | cast_or_null<EnumConstantDecl>(Elements[i]); | |||
18017 | if (!ECD) continue; // Already issued a diagnostic. | |||
18018 | ||||
18019 | const llvm::APSInt &InitVal = ECD->getInitVal(); | |||
18020 | ||||
18021 | // Keep track of the size of positive and negative values. | |||
18022 | if (InitVal.isUnsigned() || InitVal.isNonNegative()) | |||
18023 | NumPositiveBits = std::max(NumPositiveBits, | |||
18024 | (unsigned)InitVal.getActiveBits()); | |||
18025 | else | |||
18026 | NumNegativeBits = std::max(NumNegativeBits, | |||
18027 | (unsigned)InitVal.getMinSignedBits()); | |||
18028 | ||||
18029 | // Keep track of whether every enum element has type int (very common). | |||
18030 | if (AllElementsInt) | |||
18031 | AllElementsInt = ECD->getType() == Context.IntTy; | |||
18032 | } | |||
18033 | ||||
18034 | // Figure out the type that should be used for this enum. | |||
18035 | QualType BestType; | |||
18036 | unsigned BestWidth; | |||
18037 | ||||
18038 | // C++0x N3000 [conv.prom]p3: | |||
18039 | // An rvalue of an unscoped enumeration type whose underlying | |||
18040 | // type is not fixed can be converted to an rvalue of the first | |||
18041 | // of the following types that can represent all the values of | |||
18042 | // the enumeration: int, unsigned int, long int, unsigned long | |||
18043 | // int, long long int, or unsigned long long int. | |||
18044 | // C99 6.4.4.3p2: | |||
18045 | // An identifier declared as an enumeration constant has type int. | |||
18046 | // The C99 rule is modified by a gcc extension | |||
18047 | QualType BestPromotionType; | |||
18048 | ||||
18049 | bool Packed = Enum->hasAttr<PackedAttr>(); | |||
18050 | // -fshort-enums is the equivalent to specifying the packed attribute on all | |||
18051 | // enum definitions. | |||
18052 | if (LangOpts.ShortEnums) | |||
18053 | Packed = true; | |||
18054 | ||||
18055 | // If the enum already has a type because it is fixed or dictated by the | |||
18056 | // target, promote that type instead of analyzing the enumerators. | |||
18057 | if (Enum->isComplete()) { | |||
18058 | BestType = Enum->getIntegerType(); | |||
18059 | if (BestType->isPromotableIntegerType()) | |||
18060 | BestPromotionType = Context.getPromotedIntegerType(BestType); | |||
18061 | else | |||
18062 | BestPromotionType = BestType; | |||
18063 | ||||
18064 | BestWidth = Context.getIntWidth(BestType); | |||
18065 | } | |||
18066 | else if (NumNegativeBits) { | |||
18067 | // If there is a negative value, figure out the smallest integer type (of | |||
18068 | // int/long/longlong) that fits. | |||
18069 | // If it's packed, check also if it fits a char or a short. | |||
18070 | if (Packed && NumNegativeBits <= CharWidth && NumPositiveBits < CharWidth) { | |||
18071 | BestType = Context.SignedCharTy; | |||
18072 | BestWidth = CharWidth; | |||
18073 | } else if (Packed && NumNegativeBits <= ShortWidth && | |||
18074 | NumPositiveBits < ShortWidth) { | |||
18075 | BestType = Context.ShortTy; | |||
18076 | BestWidth = ShortWidth; | |||
18077 | } else if (NumNegativeBits <= IntWidth && NumPositiveBits < IntWidth) { | |||
18078 | BestType = Context.IntTy; | |||
18079 | BestWidth = IntWidth; | |||
18080 | } else { | |||
18081 | BestWidth = Context.getTargetInfo().getLongWidth(); | |||
18082 | ||||
18083 | if (NumNegativeBits <= BestWidth && NumPositiveBits < BestWidth) { | |||
18084 | BestType = Context.LongTy; | |||
18085 | } else { | |||
18086 | BestWidth = Context.getTargetInfo().getLongLongWidth(); | |||
18087 | ||||
18088 | if (NumNegativeBits > BestWidth || NumPositiveBits >= BestWidth) | |||
18089 | Diag(Enum->getLocation(), diag::ext_enum_too_large); | |||
18090 | BestType = Context.LongLongTy; | |||
18091 | } | |||
18092 | } | |||
18093 | BestPromotionType = (BestWidth <= IntWidth ? Context.IntTy : BestType); | |||
18094 | } else { | |||
18095 | // If there is no negative value, figure out the smallest type that fits | |||
18096 | // all of the enumerator values. | |||
18097 | // If it's packed, check also if it fits a char or a short. | |||
18098 | if (Packed && NumPositiveBits <= CharWidth) { | |||
18099 | BestType = Context.UnsignedCharTy; | |||
18100 | BestPromotionType = Context.IntTy; | |||
18101 | BestWidth = CharWidth; | |||
18102 | } else if (Packed && NumPositiveBits <= ShortWidth) { | |||
18103 | BestType = Context.UnsignedShortTy; | |||
18104 | BestPromotionType = Context.IntTy; | |||
18105 | BestWidth = ShortWidth; | |||
18106 | } else if (NumPositiveBits <= IntWidth) { | |||
18107 | BestType = Context.UnsignedIntTy; | |||
18108 | BestWidth = IntWidth; | |||
18109 | BestPromotionType | |||
18110 | = (NumPositiveBits == BestWidth || !getLangOpts().CPlusPlus) | |||
18111 | ? Context.UnsignedIntTy : Context.IntTy; | |||
18112 | } else if (NumPositiveBits <= | |||
18113 | (BestWidth = Context.getTargetInfo().getLongWidth())) { | |||
18114 | BestType = Context.UnsignedLongTy; | |||
18115 | BestPromotionType | |||
18116 | = (NumPositiveBits == BestWidth || !getLangOpts().CPlusPlus) | |||
18117 | ? Context.UnsignedLongTy : Context.LongTy; | |||
18118 | } else { | |||
18119 | BestWidth = Context.getTargetInfo().getLongLongWidth(); | |||
18120 | assert(NumPositiveBits <= BestWidth &&((NumPositiveBits <= BestWidth && "How could an initializer get larger than ULL?" ) ? static_cast<void> (0) : __assert_fail ("NumPositiveBits <= BestWidth && \"How could an initializer get larger than ULL?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 18121, __PRETTY_FUNCTION__)) | |||
18121 | "How could an initializer get larger than ULL?")((NumPositiveBits <= BestWidth && "How could an initializer get larger than ULL?" ) ? static_cast<void> (0) : __assert_fail ("NumPositiveBits <= BestWidth && \"How could an initializer get larger than ULL?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/lib/Sema/SemaDecl.cpp" , 18121, __PRETTY_FUNCTION__)); | |||
18122 | BestType = Context.UnsignedLongLongTy; | |||
18123 | BestPromotionType | |||
18124 | = (NumPositiveBits == BestWidth || !getLangOpts().CPlusPlus) | |||
18125 | ? Context.UnsignedLongLongTy : Context.LongLongTy; | |||
18126 | } | |||
18127 | } | |||
18128 | ||||
18129 | // Loop over all of the enumerator constants, changing their types to match | |||
18130 | // the type of the enum if needed. | |||
18131 | for (auto *D : Elements) { | |||
18132 | auto *ECD = cast_or_null<EnumConstantDecl>(D); | |||
18133 | if (!ECD) continue; // Already issued a diagnostic. | |||
18134 | ||||
18135 | // Standard C says the enumerators have int type, but we allow, as an | |||
18136 | // extension, the enumerators to be larger than int size. If each | |||
18137 | // enumerator value fits in an int, type it as an int, otherwise type it the | |||
18138 | // same as the enumerator decl itself. This means that in "enum { X = 1U }" | |||
18139 | // that X has type 'int', not 'unsigned'. | |||
18140 | ||||
18141 | // Determine whether the value fits into an int. | |||
18142 | llvm::APSInt InitVal = ECD->getInitVal(); | |||
18143 | ||||
18144 | // If it fits into an integer type, force it. Otherwise force it to match | |||
18145 | // the enum decl type. | |||
18146 | QualType NewTy; | |||
18147 | unsigned NewWidth; | |||
18148 | bool NewSign; | |||
18149 | if (!getLangOpts().CPlusPlus && | |||
18150 | !Enum->isFixed() && | |||
18151 | isRepresentableIntegerValue(Context, InitVal, Context.IntTy)) { | |||
18152 | NewTy = Context.IntTy; | |||
18153 | NewWidth = IntWidth; | |||
18154 | NewSign = true; | |||
18155 | } else if (ECD->getType() == BestType) { | |||
18156 | // Already the right type! | |||
18157 | if (getLangOpts().CPlusPlus) | |||
18158 | // C++ [dcl.enum]p4: Following the closing brace of an | |||
18159 | // enum-specifier, each enumerator has the type of its | |||
18160 | // enumeration. | |||
18161 | ECD->setType(EnumType); | |||
18162 | continue; | |||
18163 | } else { | |||
18164 | NewTy = BestType; | |||
18165 | NewWidth = BestWidth; | |||
18166 | NewSign = BestType->isSignedIntegerOrEnumerationType(); | |||
18167 | } | |||
18168 | ||||
18169 | // Adjust the APSInt value. | |||
18170 | InitVal = InitVal.extOrTrunc(NewWidth); | |||
18171 | InitVal.setIsSigned(NewSign); | |||
18172 | ECD->setInitVal(InitVal); | |||
18173 | ||||
18174 | // Adjust the Expr initializer and type. | |||
18175 | if (ECD->getInitExpr() && | |||
18176 | !Context.hasSameType(NewTy, ECD->getInitExpr()->getType())) | |||
18177 | ECD->setInitExpr(ImplicitCastExpr::Create( | |||
18178 | Context, NewTy, CK_IntegralCast, ECD->getInitExpr(), | |||
18179 | /*base paths*/ nullptr, VK_RValue, FPOptionsOverride())); | |||
18180 | if (getLangOpts().CPlusPlus) | |||
18181 | // C++ [dcl.enum]p4: Following the closing brace of an | |||
18182 | // enum-specifier, each enumerator has the type of its | |||
18183 | // enumeration. | |||
18184 | ECD->setType(EnumType); | |||
18185 | else | |||
18186 | ECD->setType(NewTy); | |||
18187 | } | |||
18188 | ||||
18189 | Enum->completeDefinition(BestType, BestPromotionType, | |||
18190 | NumPositiveBits, NumNegativeBits); | |||
18191 | ||||
18192 | CheckForDuplicateEnumValues(*this, Elements, Enum, EnumType); | |||
18193 | ||||
18194 | if (Enum->isClosedFlag()) { | |||
18195 | for (Decl *D : Elements) { | |||
18196 | EnumConstantDecl *ECD = cast_or_null<EnumConstantDecl>(D); | |||
18197 | if (!ECD) continue; // Already issued a diagnostic. | |||
18198 | ||||
18199 | llvm::APSInt InitVal = ECD->getInitVal(); | |||
18200 | if (InitVal != 0 && !InitVal.isPowerOf2() && | |||
18201 | !IsValueInFlagEnum(Enum, InitVal, true)) | |||
18202 | Diag(ECD->getLocation(), diag::warn_flag_enum_constant_out_of_range) | |||
18203 | << ECD << Enum; | |||
18204 | } | |||
18205 | } | |||
18206 | ||||
18207 | // Now that the enum type is defined, ensure it's not been underaligned. | |||
18208 | if (Enum->hasAttrs()) | |||
18209 | CheckAlignasUnderalignment(Enum); | |||
18210 | } | |||
18211 | ||||
18212 | Decl *Sema::ActOnFileScopeAsmDecl(Expr *expr, | |||
18213 | SourceLocation StartLoc, | |||
18214 | SourceLocation EndLoc) { | |||
18215 | StringLiteral *AsmString = cast<StringLiteral>(expr); | |||
18216 | ||||
18217 | FileScopeAsmDecl *New = FileScopeAsmDecl::Create(Context, CurContext, | |||
18218 | AsmString, StartLoc, | |||
18219 | EndLoc); | |||
18220 | CurContext->addDecl(New); | |||
18221 | return New; | |||
18222 | } | |||
18223 | ||||
18224 | void Sema::ActOnPragmaRedefineExtname(IdentifierInfo* Name, | |||
18225 | IdentifierInfo* AliasName, | |||
18226 | SourceLocation PragmaLoc, | |||
18227 | SourceLocation NameLoc, | |||
18228 | SourceLocation AliasNameLoc) { | |||
18229 | NamedDecl *PrevDecl = LookupSingleName(TUScope, Name, NameLoc, | |||
18230 | LookupOrdinaryName); | |||
18231 | AttributeCommonInfo Info(AliasName, SourceRange(AliasNameLoc), | |||
18232 | AttributeCommonInfo::AS_Pragma); | |||
18233 | AsmLabelAttr *Attr = AsmLabelAttr::CreateImplicit( | |||
18234 | Context, AliasName->getName(), /*LiteralLabel=*/true, Info); | |||
18235 | ||||
18236 | // If a declaration that: | |||
18237 | // 1) declares a function or a variable | |||
18238 | // 2) has external linkage | |||
18239 | // already exists, add a label attribute to it. | |||
18240 | if (PrevDecl && (isa<FunctionDecl>(PrevDecl) || isa<VarDecl>(PrevDecl))) { | |||
18241 | if (isDeclExternC(PrevDecl)) | |||
18242 | PrevDecl->addAttr(Attr); | |||
18243 | else | |||
18244 | Diag(PrevDecl->getLocation(), diag::warn_redefine_extname_not_applied) | |||
18245 | << /*Variable*/(isa<FunctionDecl>(PrevDecl) ? 0 : 1) << PrevDecl; | |||
18246 | // Otherwise, add a label atttibute to ExtnameUndeclaredIdentifiers. | |||
18247 | } else | |||
18248 | (void)ExtnameUndeclaredIdentifiers.insert(std::make_pair(Name, Attr)); | |||
18249 | } | |||
18250 | ||||
18251 | void Sema::ActOnPragmaWeakID(IdentifierInfo* Name, | |||
18252 | SourceLocation PragmaLoc, | |||
18253 | SourceLocation NameLoc) { | |||
18254 | Decl *PrevDecl = LookupSingleName(TUScope, Name, NameLoc, LookupOrdinaryName); | |||
18255 | ||||
18256 | if (PrevDecl) { | |||
18257 | PrevDecl->addAttr(WeakAttr::CreateImplicit(Context, PragmaLoc, AttributeCommonInfo::AS_Pragma)); | |||
18258 | } else { | |||
18259 | (void)WeakUndeclaredIdentifiers.insert( | |||
18260 | std::pair<IdentifierInfo*,WeakInfo> | |||
18261 | (Name, WeakInfo((IdentifierInfo*)nullptr, NameLoc))); | |||
18262 | } | |||
18263 | } | |||
18264 | ||||
18265 | void Sema::ActOnPragmaWeakAlias(IdentifierInfo* Name, | |||
18266 | IdentifierInfo* AliasName, | |||
18267 | SourceLocation PragmaLoc, | |||
18268 | SourceLocation NameLoc, | |||
18269 | SourceLocation AliasNameLoc) { | |||
18270 | Decl *PrevDecl = LookupSingleName(TUScope, AliasName, AliasNameLoc, | |||
18271 | LookupOrdinaryName); | |||
18272 | WeakInfo W = WeakInfo(Name, NameLoc); | |||
18273 | ||||
18274 | if (PrevDecl && (isa<FunctionDecl>(PrevDecl) || isa<VarDecl>(PrevDecl))) { | |||
18275 | if (!PrevDecl->hasAttr<AliasAttr>()) | |||
18276 | if (NamedDecl *ND = dyn_cast<NamedDecl>(PrevDecl)) | |||
18277 | DeclApplyPragmaWeak(TUScope, ND, W); | |||
18278 | } else { | |||
18279 | (void)WeakUndeclaredIdentifiers.insert( | |||
18280 | std::pair<IdentifierInfo*,WeakInfo>(AliasName, W)); | |||
18281 | } | |||
18282 | } | |||
18283 | ||||
18284 | Decl *Sema::getObjCDeclContext() const { | |||
18285 | return (dyn_cast_or_null<ObjCContainerDecl>(CurContext)); | |||
18286 | } | |||
18287 | ||||
18288 | Sema::FunctionEmissionStatus Sema::getEmissionStatus(FunctionDecl *FD, | |||
18289 | bool Final) { | |||
18290 | // SYCL functions can be template, so we check if they have appropriate | |||
18291 | // attribute prior to checking if it is a template. | |||
18292 | if (LangOpts.SYCLIsDevice && FD->hasAttr<SYCLKernelAttr>()) | |||
18293 | return FunctionEmissionStatus::Emitted; | |||
18294 | ||||
18295 | // Templates are emitted when they're instantiated. | |||
18296 | if (FD->isDependentContext()) | |||
18297 | return FunctionEmissionStatus::TemplateDiscarded; | |||
18298 | ||||
18299 | FunctionEmissionStatus OMPES = FunctionEmissionStatus::Unknown; | |||
18300 | if (LangOpts.OpenMPIsDevice) { | |||
18301 | Optional<OMPDeclareTargetDeclAttr::DevTypeTy> DevTy = | |||
18302 | OMPDeclareTargetDeclAttr::getDeviceType(FD->getCanonicalDecl()); | |||
18303 | if (DevTy.hasValue()) { | |||
18304 | if (*DevTy == OMPDeclareTargetDeclAttr::DT_Host) | |||
18305 | OMPES = FunctionEmissionStatus::OMPDiscarded; | |||
18306 | else if (*DevTy == OMPDeclareTargetDeclAttr::DT_NoHost || | |||
18307 | *DevTy == OMPDeclareTargetDeclAttr::DT_Any) { | |||
18308 | OMPES = FunctionEmissionStatus::Emitted; | |||
18309 | } | |||
18310 | } | |||
18311 | } else if (LangOpts.OpenMP) { | |||
18312 | // In OpenMP 4.5 all the functions are host functions. | |||
18313 | if (LangOpts.OpenMP <= 45) { | |||
18314 | OMPES = FunctionEmissionStatus::Emitted; | |||
18315 | } else { | |||
18316 | Optional<OMPDeclareTargetDeclAttr::DevTypeTy> DevTy = | |||
18317 | OMPDeclareTargetDeclAttr::getDeviceType(FD->getCanonicalDecl()); | |||
18318 | // In OpenMP 5.0 or above, DevTy may be changed later by | |||
18319 | // #pragma omp declare target to(*) device_type(*). Therefore DevTy | |||
18320 | // having no value does not imply host. The emission status will be | |||
18321 | // checked again at the end of compilation unit. | |||
18322 | if (DevTy.hasValue()) { | |||
18323 | if (*DevTy == OMPDeclareTargetDeclAttr::DT_NoHost) { | |||
18324 | OMPES = FunctionEmissionStatus::OMPDiscarded; | |||
18325 | } else if (*DevTy == OMPDeclareTargetDeclAttr::DT_Host || | |||
18326 | *DevTy == OMPDeclareTargetDeclAttr::DT_Any) | |||
18327 | OMPES = FunctionEmissionStatus::Emitted; | |||
18328 | } else if (Final) | |||
18329 | OMPES = FunctionEmissionStatus::Emitted; | |||
18330 | } | |||
18331 | } | |||
18332 | if (OMPES == FunctionEmissionStatus::OMPDiscarded || | |||
18333 | (OMPES == FunctionEmissionStatus::Emitted && !LangOpts.CUDA)) | |||
18334 | return OMPES; | |||
18335 | ||||
18336 | if (LangOpts.CUDA) { | |||
18337 | // When compiling for device, host functions are never emitted. Similarly, | |||
18338 | // when compiling for host, device and global functions are never emitted. | |||
18339 | // (Technically, we do emit a host-side stub for global functions, but this | |||
18340 | // doesn't count for our purposes here.) | |||
18341 | Sema::CUDAFunctionTarget T = IdentifyCUDATarget(FD); | |||
18342 | if (LangOpts.CUDAIsDevice && T == Sema::CFT_Host) | |||
18343 | return FunctionEmissionStatus::CUDADiscarded; | |||
18344 | if (!LangOpts.CUDAIsDevice && | |||
18345 | (T == Sema::CFT_Device || T == Sema::CFT_Global)) | |||
18346 | return FunctionEmissionStatus::CUDADiscarded; | |||
18347 | ||||
18348 | // Check whether this function is externally visible -- if so, it's | |||
18349 | // known-emitted. | |||
18350 | // | |||
18351 | // We have to check the GVA linkage of the function's *definition* -- if we | |||
18352 | // only have a declaration, we don't know whether or not the function will | |||
18353 | // be emitted, because (say) the definition could include "inline". | |||
18354 | FunctionDecl *Def = FD->getDefinition(); | |||
18355 | ||||
18356 | if (Def && | |||
18357 | !isDiscardableGVALinkage(getASTContext().GetGVALinkageForFunction(Def)) | |||
18358 | && (!LangOpts.OpenMP || OMPES == FunctionEmissionStatus::Emitted)) | |||
18359 | return FunctionEmissionStatus::Emitted; | |||
18360 | } | |||
18361 | ||||
18362 | // Otherwise, the function is known-emitted if it's in our set of | |||
18363 | // known-emitted functions. | |||
18364 | return FunctionEmissionStatus::Unknown; | |||
18365 | } | |||
18366 | ||||
18367 | bool Sema::shouldIgnoreInHostDeviceCheck(FunctionDecl *Callee) { | |||
18368 | // Host-side references to a __global__ function refer to the stub, so the | |||
18369 | // function itself is never emitted and therefore should not be marked. | |||
18370 | // If we have host fn calls kernel fn calls host+device, the HD function | |||
18371 | // does not get instantiated on the host. We model this by omitting at the | |||
18372 | // call to the kernel from the callgraph. This ensures that, when compiling | |||
18373 | // for host, only HD functions actually called from the host get marked as | |||
18374 | // known-emitted. | |||
18375 | return LangOpts.CUDA && !LangOpts.CUDAIsDevice && | |||
18376 | IdentifyCUDATarget(Callee) == CFT_Global; | |||
18377 | } |
1 | //===- Type.h - C Language Family Type Representation -----------*- C++ -*-===// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4 | // See https://llvm.org/LICENSE.txt for license information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7 | //===----------------------------------------------------------------------===// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
8 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
9 | /// \file | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
10 | /// C Language Family Type Representation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
11 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
12 | /// This file defines the clang::Type interface and subclasses, used to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
13 | /// represent types for languages in the C family. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
14 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
15 | //===----------------------------------------------------------------------===// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
16 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
17 | #ifndef LLVM_CLANG_AST_TYPE_H | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
18 | #define LLVM_CLANG_AST_TYPE_H | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
19 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
20 | #include "clang/AST/DependenceFlags.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
21 | #include "clang/AST/NestedNameSpecifier.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
22 | #include "clang/AST/TemplateName.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
23 | #include "clang/Basic/AddressSpaces.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
24 | #include "clang/Basic/AttrKinds.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
25 | #include "clang/Basic/Diagnostic.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
26 | #include "clang/Basic/ExceptionSpecificationType.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
27 | #include "clang/Basic/LLVM.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
28 | #include "clang/Basic/Linkage.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
29 | #include "clang/Basic/PartialDiagnostic.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
30 | #include "clang/Basic/SourceLocation.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
31 | #include "clang/Basic/Specifiers.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
32 | #include "clang/Basic/Visibility.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
33 | #include "llvm/ADT/APInt.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
34 | #include "llvm/ADT/APSInt.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
35 | #include "llvm/ADT/ArrayRef.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
36 | #include "llvm/ADT/FoldingSet.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
37 | #include "llvm/ADT/None.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
38 | #include "llvm/ADT/Optional.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
39 | #include "llvm/ADT/PointerIntPair.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
40 | #include "llvm/ADT/PointerUnion.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
41 | #include "llvm/ADT/StringRef.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
42 | #include "llvm/ADT/Twine.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
43 | #include "llvm/ADT/iterator_range.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
44 | #include "llvm/Support/Casting.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
45 | #include "llvm/Support/Compiler.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
46 | #include "llvm/Support/ErrorHandling.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
47 | #include "llvm/Support/PointerLikeTypeTraits.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
48 | #include "llvm/Support/TrailingObjects.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
49 | #include "llvm/Support/type_traits.h" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
50 | #include <cassert> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
51 | #include <cstddef> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
52 | #include <cstdint> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
53 | #include <cstring> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
54 | #include <string> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
55 | #include <type_traits> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
56 | #include <utility> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
57 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
58 | namespace clang { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
59 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
60 | class ExtQuals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
61 | class QualType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
62 | class ConceptDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
63 | class TagDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
64 | class TemplateParameterList; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
65 | class Type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
66 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
67 | enum { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
68 | TypeAlignmentInBits = 4, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
69 | TypeAlignment = 1 << TypeAlignmentInBits | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
70 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
71 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
72 | namespace serialization { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
73 | template <class T> class AbstractTypeReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
74 | template <class T> class AbstractTypeWriter; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
75 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
76 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
77 | } // namespace clang | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
78 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
79 | namespace llvm { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
80 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
81 | template <typename T> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
82 | struct PointerLikeTypeTraits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
83 | template<> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
84 | struct PointerLikeTypeTraits< ::clang::Type*> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
85 | static inline void *getAsVoidPointer(::clang::Type *P) { return P; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
86 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
87 | static inline ::clang::Type *getFromVoidPointer(void *P) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
88 | return static_cast< ::clang::Type*>(P); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
89 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
90 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
91 | static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
92 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
93 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
94 | template<> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
95 | struct PointerLikeTypeTraits< ::clang::ExtQuals*> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
96 | static inline void *getAsVoidPointer(::clang::ExtQuals *P) { return P; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
97 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
98 | static inline ::clang::ExtQuals *getFromVoidPointer(void *P) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
99 | return static_cast< ::clang::ExtQuals*>(P); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
100 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
101 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
102 | static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
103 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
104 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
105 | } // namespace llvm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
106 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
107 | namespace clang { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
108 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
109 | class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
110 | template <typename> class CanQual; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
111 | class CXXRecordDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
112 | class DeclContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
113 | class EnumDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
114 | class Expr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
115 | class ExtQualsTypeCommonBase; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
116 | class FunctionDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
117 | class IdentifierInfo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
118 | class NamedDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
119 | class ObjCInterfaceDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
120 | class ObjCProtocolDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
121 | class ObjCTypeParamDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
122 | struct PrintingPolicy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
123 | class RecordDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
124 | class Stmt; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
125 | class TagDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
126 | class TemplateArgument; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
127 | class TemplateArgumentListInfo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
128 | class TemplateArgumentLoc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
129 | class TemplateTypeParmDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
130 | class TypedefNameDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
131 | class UnresolvedUsingTypenameDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
132 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
133 | using CanQualType = CanQual<Type>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
134 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
135 | // Provide forward declarations for all of the *Type classes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
136 | #define TYPE(Class, Base) class Class##Type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
137 | #include "clang/AST/TypeNodes.inc" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
138 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
139 | /// The collection of all-type qualifiers we support. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
140 | /// Clang supports five independent qualifiers: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
141 | /// * C99: const, volatile, and restrict | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
142 | /// * MS: __unaligned | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
143 | /// * Embedded C (TR18037): address spaces | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
144 | /// * Objective C: the GC attributes (none, weak, or strong) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
145 | class Qualifiers { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
146 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
147 | enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
148 | Const = 0x1, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
149 | Restrict = 0x2, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
150 | Volatile = 0x4, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
151 | CVRMask = Const | Volatile | Restrict | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
152 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
153 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
154 | enum GC { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
155 | GCNone = 0, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
156 | Weak, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
157 | Strong | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
158 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
159 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
160 | enum ObjCLifetime { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
161 | /// There is no lifetime qualification on this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
162 | OCL_None, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
163 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
164 | /// This object can be modified without requiring retains or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
165 | /// releases. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
166 | OCL_ExplicitNone, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
167 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
168 | /// Assigning into this object requires the old value to be | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
169 | /// released and the new value to be retained. The timing of the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
170 | /// release of the old value is inexact: it may be moved to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
171 | /// immediately after the last known point where the value is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
172 | /// live. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
173 | OCL_Strong, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
174 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
175 | /// Reading or writing from this object requires a barrier call. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
176 | OCL_Weak, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
177 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
178 | /// Assigning into this object requires a lifetime extension. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
179 | OCL_Autoreleasing | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
180 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
181 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
182 | enum { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
183 | /// The maximum supported address space number. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
184 | /// 23 bits should be enough for anyone. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
185 | MaxAddressSpace = 0x7fffffu, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
186 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
187 | /// The width of the "fast" qualifier mask. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
188 | FastWidth = 3, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
189 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
190 | /// The fast qualifier mask. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
191 | FastMask = (1 << FastWidth) - 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
192 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
193 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
194 | /// Returns the common set of qualifiers while removing them from | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
195 | /// the given sets. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
196 | static Qualifiers removeCommonQualifiers(Qualifiers &L, Qualifiers &R) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
197 | // If both are only CVR-qualified, bit operations are sufficient. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
198 | if (!(L.Mask & ~CVRMask) && !(R.Mask & ~CVRMask)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
199 | Qualifiers Q; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
200 | Q.Mask = L.Mask & R.Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
201 | L.Mask &= ~Q.Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
202 | R.Mask &= ~Q.Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
203 | return Q; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
204 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
205 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
206 | Qualifiers Q; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
207 | unsigned CommonCRV = L.getCVRQualifiers() & R.getCVRQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
208 | Q.addCVRQualifiers(CommonCRV); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
209 | L.removeCVRQualifiers(CommonCRV); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
210 | R.removeCVRQualifiers(CommonCRV); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
211 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
212 | if (L.getObjCGCAttr() == R.getObjCGCAttr()) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
213 | Q.setObjCGCAttr(L.getObjCGCAttr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
214 | L.removeObjCGCAttr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
215 | R.removeObjCGCAttr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
216 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
217 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
218 | if (L.getObjCLifetime() == R.getObjCLifetime()) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
219 | Q.setObjCLifetime(L.getObjCLifetime()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
220 | L.removeObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
221 | R.removeObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
222 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
223 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
224 | if (L.getAddressSpace() == R.getAddressSpace()) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
225 | Q.setAddressSpace(L.getAddressSpace()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
226 | L.removeAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
227 | R.removeAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
228 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
229 | return Q; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
230 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
231 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
232 | static Qualifiers fromFastMask(unsigned Mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
233 | Qualifiers Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
234 | Qs.addFastQualifiers(Mask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
235 | return Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
236 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
237 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
238 | static Qualifiers fromCVRMask(unsigned CVR) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
239 | Qualifiers Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
240 | Qs.addCVRQualifiers(CVR); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
241 | return Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
242 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
243 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
244 | static Qualifiers fromCVRUMask(unsigned CVRU) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
245 | Qualifiers Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
246 | Qs.addCVRUQualifiers(CVRU); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
247 | return Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
248 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
249 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
250 | // Deserialize qualifiers from an opaque representation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
251 | static Qualifiers fromOpaqueValue(unsigned opaque) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
252 | Qualifiers Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
253 | Qs.Mask = opaque; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
254 | return Qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
255 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
256 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
257 | // Serialize these qualifiers into an opaque representation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
258 | unsigned getAsOpaqueValue() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
259 | return Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
260 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
261 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
262 | bool hasConst() const { return Mask & Const; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
263 | bool hasOnlyConst() const { return Mask == Const; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
264 | void removeConst() { Mask &= ~Const; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
265 | void addConst() { Mask |= Const; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
266 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
267 | bool hasVolatile() const { return Mask & Volatile; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
268 | bool hasOnlyVolatile() const { return Mask == Volatile; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
269 | void removeVolatile() { Mask &= ~Volatile; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
270 | void addVolatile() { Mask |= Volatile; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
271 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
272 | bool hasRestrict() const { return Mask & Restrict; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
273 | bool hasOnlyRestrict() const { return Mask == Restrict; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
274 | void removeRestrict() { Mask &= ~Restrict; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
275 | void addRestrict() { Mask |= Restrict; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
276 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
277 | bool hasCVRQualifiers() const { return getCVRQualifiers(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
278 | unsigned getCVRQualifiers() const { return Mask & CVRMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
279 | unsigned getCVRUQualifiers() const { return Mask & (CVRMask | UMask); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
280 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
281 | void setCVRQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
282 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 282, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
283 | Mask = (Mask & ~CVRMask) | mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
284 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
285 | void removeCVRQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
286 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 286, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
287 | Mask &= ~mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
288 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
289 | void removeCVRQualifiers() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
290 | removeCVRQualifiers(CVRMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
291 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
292 | void addCVRQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
293 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 293, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
294 | Mask |= mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
295 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
296 | void addCVRUQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
297 | assert(!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits")((!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask & ~UMask) && \"bitmask contains non-CVRU bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 297, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
298 | Mask |= mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
299 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
300 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
301 | bool hasUnaligned() const { return Mask & UMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
302 | void setUnaligned(bool flag) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
303 | Mask = (Mask & ~UMask) | (flag ? UMask : 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
304 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
305 | void removeUnaligned() { Mask &= ~UMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
306 | void addUnaligned() { Mask |= UMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
307 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
308 | bool hasObjCGCAttr() const { return Mask & GCAttrMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
309 | GC getObjCGCAttr() const { return GC((Mask & GCAttrMask) >> GCAttrShift); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
310 | void setObjCGCAttr(GC type) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
311 | Mask = (Mask & ~GCAttrMask) | (type << GCAttrShift); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
312 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
313 | void removeObjCGCAttr() { setObjCGCAttr(GCNone); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
314 | void addObjCGCAttr(GC type) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
315 | assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 315, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
316 | setObjCGCAttr(type); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
317 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
318 | Qualifiers withoutObjCGCAttr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
319 | Qualifiers qs = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
320 | qs.removeObjCGCAttr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
321 | return qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
322 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
323 | Qualifiers withoutObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
324 | Qualifiers qs = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
325 | qs.removeObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
326 | return qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
327 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
328 | Qualifiers withoutAddressSpace() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
329 | Qualifiers qs = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
330 | qs.removeAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
331 | return qs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
332 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
333 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
334 | bool hasObjCLifetime() const { return Mask & LifetimeMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
335 | ObjCLifetime getObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
336 | return ObjCLifetime((Mask & LifetimeMask) >> LifetimeShift); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
337 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
338 | void setObjCLifetime(ObjCLifetime type) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
339 | Mask = (Mask & ~LifetimeMask) | (type << LifetimeShift); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
340 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
341 | void removeObjCLifetime() { setObjCLifetime(OCL_None); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
342 | void addObjCLifetime(ObjCLifetime type) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
343 | assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 343, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
344 | assert(!hasObjCLifetime())((!hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("!hasObjCLifetime()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 344, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
345 | Mask |= (type << LifetimeShift); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
346 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
347 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
348 | /// True if the lifetime is neither None or ExplicitNone. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
349 | bool hasNonTrivialObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
350 | ObjCLifetime lifetime = getObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
351 | return (lifetime > OCL_ExplicitNone); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
352 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
353 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
354 | /// True if the lifetime is either strong or weak. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
355 | bool hasStrongOrWeakObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
356 | ObjCLifetime lifetime = getObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
357 | return (lifetime == OCL_Strong || lifetime == OCL_Weak); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
358 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
359 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
360 | bool hasAddressSpace() const { return Mask & AddressSpaceMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
361 | LangAS getAddressSpace() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
362 | return static_cast<LangAS>(Mask >> AddressSpaceShift); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
363 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
364 | bool hasTargetSpecificAddressSpace() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
365 | return isTargetAddressSpace(getAddressSpace()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
366 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
367 | /// Get the address space attribute value to be printed by diagnostics. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
368 | unsigned getAddressSpaceAttributePrintValue() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
369 | auto Addr = getAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
370 | // This function is not supposed to be used with language specific | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
371 | // address spaces. If that happens, the diagnostic message should consider | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
372 | // printing the QualType instead of the address space value. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
373 | assert(Addr == LangAS::Default || hasTargetSpecificAddressSpace())((Addr == LangAS::Default || hasTargetSpecificAddressSpace()) ? static_cast<void> (0) : __assert_fail ("Addr == LangAS::Default || hasTargetSpecificAddressSpace()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 373, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
374 | if (Addr != LangAS::Default) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
375 | return toTargetAddressSpace(Addr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
376 | // TODO: The diagnostic messages where Addr may be 0 should be fixed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
377 | // since it cannot differentiate the situation where 0 denotes the default | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
378 | // address space or user specified __attribute__((address_space(0))). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
379 | return 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
380 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
381 | void setAddressSpace(LangAS space) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
382 | assert((unsigned)space <= MaxAddressSpace)(((unsigned)space <= MaxAddressSpace) ? static_cast<void > (0) : __assert_fail ("(unsigned)space <= MaxAddressSpace" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 382, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
383 | Mask = (Mask & ~AddressSpaceMask) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
384 | | (((uint32_t) space) << AddressSpaceShift); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
385 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
386 | void removeAddressSpace() { setAddressSpace(LangAS::Default); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
387 | void addAddressSpace(LangAS space) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
388 | assert(space != LangAS::Default)((space != LangAS::Default) ? static_cast<void> (0) : __assert_fail ("space != LangAS::Default", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 388, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
389 | setAddressSpace(space); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
390 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
391 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
392 | // Fast qualifiers are those that can be allocated directly | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
393 | // on a QualType object. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
394 | bool hasFastQualifiers() const { return getFastQualifiers(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
395 | unsigned getFastQualifiers() const { return Mask & FastMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
396 | void setFastQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
397 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 397, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
398 | Mask = (Mask & ~FastMask) | mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
399 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
400 | void removeFastQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
401 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 401, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
402 | Mask &= ~mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
403 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
404 | void removeFastQualifiers() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
405 | removeFastQualifiers(FastMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
406 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
407 | void addFastQualifiers(unsigned mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
408 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 408, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
409 | Mask |= mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
410 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
411 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
412 | /// Return true if the set contains any qualifiers which require an ExtQuals | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
413 | /// node to be allocated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
414 | bool hasNonFastQualifiers() const { return Mask & ~FastMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
415 | Qualifiers getNonFastQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
416 | Qualifiers Quals = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
417 | Quals.setFastQualifiers(0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
418 | return Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
419 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
420 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
421 | /// Return true if the set contains any qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
422 | bool hasQualifiers() const { return Mask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
423 | bool empty() const { return !Mask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
424 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
425 | /// Add the qualifiers from the given set to this set. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
426 | void addQualifiers(Qualifiers Q) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
427 | // If the other set doesn't have any non-boolean qualifiers, just | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
428 | // bit-or it in. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
429 | if (!(Q.Mask & ~CVRMask)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
430 | Mask |= Q.Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
431 | else { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
432 | Mask |= (Q.Mask & CVRMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
433 | if (Q.hasAddressSpace()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
434 | addAddressSpace(Q.getAddressSpace()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
435 | if (Q.hasObjCGCAttr()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
436 | addObjCGCAttr(Q.getObjCGCAttr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
437 | if (Q.hasObjCLifetime()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
438 | addObjCLifetime(Q.getObjCLifetime()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
439 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
440 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
441 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
442 | /// Remove the qualifiers from the given set from this set. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
443 | void removeQualifiers(Qualifiers Q) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
444 | // If the other set doesn't have any non-boolean qualifiers, just | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
445 | // bit-and the inverse in. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
446 | if (!(Q.Mask & ~CVRMask)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
447 | Mask &= ~Q.Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
448 | else { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
449 | Mask &= ~(Q.Mask & CVRMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
450 | if (getObjCGCAttr() == Q.getObjCGCAttr()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
451 | removeObjCGCAttr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
452 | if (getObjCLifetime() == Q.getObjCLifetime()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
453 | removeObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
454 | if (getAddressSpace() == Q.getAddressSpace()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
455 | removeAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
456 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
457 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
458 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
459 | /// Add the qualifiers from the given set to this set, given that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
460 | /// they don't conflict. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
461 | void addConsistentQualifiers(Qualifiers qs) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
462 | assert(getAddressSpace() == qs.getAddressSpace() ||((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace () || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 463, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
463 | !hasAddressSpace() || !qs.hasAddressSpace())((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace () || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 463, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
464 | assert(getObjCGCAttr() == qs.getObjCGCAttr() ||((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 465, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
465 | !hasObjCGCAttr() || !qs.hasObjCGCAttr())((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 465, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
466 | assert(getObjCLifetime() == qs.getObjCLifetime() ||((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime () || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 467, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
467 | !hasObjCLifetime() || !qs.hasObjCLifetime())((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime () || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 467, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
468 | Mask |= qs.Mask; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
469 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
470 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
471 | /// Returns true if address space A is equal to or a superset of B. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
472 | /// OpenCL v2.0 defines conversion rules (OpenCLC v2.0 s6.5.5) and notion of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
473 | /// overlapping address spaces. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
474 | /// CL1.1 or CL1.2: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
475 | /// every address space is a superset of itself. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
476 | /// CL2.0 adds: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
477 | /// __generic is a superset of any address space except for __constant. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
478 | static bool isAddressSpaceSupersetOf(LangAS A, LangAS B) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
479 | // Address spaces must match exactly. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
480 | return A == B || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
481 | // Otherwise in OpenCLC v2.0 s6.5.5: every address space except | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
482 | // for __constant can be used as __generic. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
483 | (A == LangAS::opencl_generic && B != LangAS::opencl_constant) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
484 | // We also define global_device and global_host address spaces, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
485 | // to distinguish global pointers allocated on host from pointers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
486 | // allocated on device, which are a subset of __global. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
487 | (A == LangAS::opencl_global && (B == LangAS::opencl_global_device || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
488 | B == LangAS::opencl_global_host)) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
489 | // Consider pointer size address spaces to be equivalent to default. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
490 | ((isPtrSizeAddressSpace(A) || A == LangAS::Default) && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
491 | (isPtrSizeAddressSpace(B) || B == LangAS::Default)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
492 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
493 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
494 | /// Returns true if the address space in these qualifiers is equal to or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
495 | /// a superset of the address space in the argument qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
496 | bool isAddressSpaceSupersetOf(Qualifiers other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
497 | return isAddressSpaceSupersetOf(getAddressSpace(), other.getAddressSpace()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
498 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
499 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
500 | /// Determines if these qualifiers compatibly include another set. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
501 | /// Generally this answers the question of whether an object with the other | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
502 | /// qualifiers can be safely used as an object with these qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
503 | bool compatiblyIncludes(Qualifiers other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
504 | return isAddressSpaceSupersetOf(other) && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
505 | // ObjC GC qualifiers can match, be added, or be removed, but can't | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
506 | // be changed. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
507 | (getObjCGCAttr() == other.getObjCGCAttr() || !hasObjCGCAttr() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
508 | !other.hasObjCGCAttr()) && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
509 | // ObjC lifetime qualifiers must match exactly. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
510 | getObjCLifetime() == other.getObjCLifetime() && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
511 | // CVR qualifiers may subset. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
512 | (((Mask & CVRMask) | (other.Mask & CVRMask)) == (Mask & CVRMask)) && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
513 | // U qualifier may superset. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
514 | (!other.hasUnaligned() || hasUnaligned()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
515 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
516 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
517 | /// Determines if these qualifiers compatibly include another set of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
518 | /// qualifiers from the narrow perspective of Objective-C ARC lifetime. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
519 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
520 | /// One set of Objective-C lifetime qualifiers compatibly includes the other | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
521 | /// if the lifetime qualifiers match, or if both are non-__weak and the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
522 | /// including set also contains the 'const' qualifier, or both are non-__weak | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
523 | /// and one is None (which can only happen in non-ARC modes). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
524 | bool compatiblyIncludesObjCLifetime(Qualifiers other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
525 | if (getObjCLifetime() == other.getObjCLifetime()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
526 | return true; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
527 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
528 | if (getObjCLifetime() == OCL_Weak || other.getObjCLifetime() == OCL_Weak) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
529 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
530 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
531 | if (getObjCLifetime() == OCL_None || other.getObjCLifetime() == OCL_None) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
532 | return true; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
533 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
534 | return hasConst(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
535 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
536 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
537 | /// Determine whether this set of qualifiers is a strict superset of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
538 | /// another set of qualifiers, not considering qualifier compatibility. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
539 | bool isStrictSupersetOf(Qualifiers Other) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
540 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
541 | bool operator==(Qualifiers Other) const { return Mask == Other.Mask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
542 | bool operator!=(Qualifiers Other) const { return Mask != Other.Mask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
543 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
544 | explicit operator bool() const { return hasQualifiers(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
545 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
546 | Qualifiers &operator+=(Qualifiers R) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
547 | addQualifiers(R); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
548 | return *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
549 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
550 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
551 | // Union two qualifier sets. If an enumerated qualifier appears | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
552 | // in both sets, use the one from the right. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
553 | friend Qualifiers operator+(Qualifiers L, Qualifiers R) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
554 | L += R; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
555 | return L; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
556 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
557 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
558 | Qualifiers &operator-=(Qualifiers R) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
559 | removeQualifiers(R); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
560 | return *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
561 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
562 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
563 | /// Compute the difference between two qualifier sets. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
564 | friend Qualifiers operator-(Qualifiers L, Qualifiers R) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
565 | L -= R; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
566 | return L; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
567 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
568 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
569 | std::string getAsString() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
570 | std::string getAsString(const PrintingPolicy &Policy) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
571 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
572 | static std::string getAddrSpaceAsString(LangAS AS); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
573 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
574 | bool isEmptyWhenPrinted(const PrintingPolicy &Policy) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
575 | void print(raw_ostream &OS, const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
576 | bool appendSpaceIfNonEmpty = false) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
577 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
578 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
579 | ID.AddInteger(Mask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
580 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
581 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
582 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
583 | // bits: |0 1 2|3|4 .. 5|6 .. 8|9 ... 31| | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
584 | // |C R V|U|GCAttr|Lifetime|AddressSpace| | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
585 | uint32_t Mask = 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
586 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
587 | static const uint32_t UMask = 0x8; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
588 | static const uint32_t UShift = 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
589 | static const uint32_t GCAttrMask = 0x30; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
590 | static const uint32_t GCAttrShift = 4; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
591 | static const uint32_t LifetimeMask = 0x1C0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
592 | static const uint32_t LifetimeShift = 6; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
593 | static const uint32_t AddressSpaceMask = | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
594 | ~(CVRMask | UMask | GCAttrMask | LifetimeMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
595 | static const uint32_t AddressSpaceShift = 9; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
596 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
597 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
598 | /// A std::pair-like structure for storing a qualified type split | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
599 | /// into its local qualifiers and its locally-unqualified type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
600 | struct SplitQualType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
601 | /// The locally-unqualified type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
602 | const Type *Ty = nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
603 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
604 | /// The local qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
605 | Qualifiers Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
606 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
607 | SplitQualType() = default; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
608 | SplitQualType(const Type *ty, Qualifiers qs) : Ty(ty), Quals(qs) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
609 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
610 | SplitQualType getSingleStepDesugaredType() const; // end of this file | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
611 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
612 | // Make std::tie work. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
613 | std::pair<const Type *,Qualifiers> asPair() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
614 | return std::pair<const Type *, Qualifiers>(Ty, Quals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
615 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
616 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
617 | friend bool operator==(SplitQualType a, SplitQualType b) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
618 | return a.Ty == b.Ty && a.Quals == b.Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
619 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
620 | friend bool operator!=(SplitQualType a, SplitQualType b) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
621 | return a.Ty != b.Ty || a.Quals != b.Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
622 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
623 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
624 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
625 | /// The kind of type we are substituting Objective-C type arguments into. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
626 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
627 | /// The kind of substitution affects the replacement of type parameters when | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
628 | /// no concrete type information is provided, e.g., when dealing with an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
629 | /// unspecialized type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
630 | enum class ObjCSubstitutionContext { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
631 | /// An ordinary type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
632 | Ordinary, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
633 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
634 | /// The result type of a method or function. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
635 | Result, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
636 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
637 | /// The parameter type of a method or function. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
638 | Parameter, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
639 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
640 | /// The type of a property. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
641 | Property, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
642 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
643 | /// The superclass of a type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
644 | Superclass, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
645 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
646 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
647 | /// A (possibly-)qualified type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
648 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
649 | /// For efficiency, we don't store CV-qualified types as nodes on their | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
650 | /// own: instead each reference to a type stores the qualifiers. This | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
651 | /// greatly reduces the number of nodes we need to allocate for types (for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
652 | /// example we only need one for 'int', 'const int', 'volatile int', | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
653 | /// 'const volatile int', etc). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
654 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
655 | /// As an added efficiency bonus, instead of making this a pair, we | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
656 | /// just store the two bits we care about in the low bits of the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
657 | /// pointer. To handle the packing/unpacking, we make QualType be a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
658 | /// simple wrapper class that acts like a smart pointer. A third bit | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
659 | /// indicates whether there are extended qualifiers present, in which | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
660 | /// case the pointer points to a special structure. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
661 | class QualType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
662 | friend class QualifierCollector; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
663 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
664 | // Thankfully, these are efficiently composable. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
665 | llvm::PointerIntPair<llvm::PointerUnion<const Type *, const ExtQuals *>, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
666 | Qualifiers::FastWidth> Value; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
667 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
668 | const ExtQuals *getExtQualsUnsafe() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
669 | return Value.getPointer().get<const ExtQuals*>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
670 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
671 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
672 | const Type *getTypePtrUnsafe() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
673 | return Value.getPointer().get<const Type*>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
674 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
675 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
676 | const ExtQualsTypeCommonBase *getCommonPtr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
677 | assert(!isNull() && "Cannot retrieve a NULL type pointer")((!isNull() && "Cannot retrieve a NULL type pointer") ? static_cast<void> (0) : __assert_fail ("!isNull() && \"Cannot retrieve a NULL type pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 677, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
678 | auto CommonPtrVal = reinterpret_cast<uintptr_t>(Value.getOpaqueValue()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
679 | CommonPtrVal &= ~(uintptr_t)((1 << TypeAlignmentInBits) - 1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
680 | return reinterpret_cast<ExtQualsTypeCommonBase*>(CommonPtrVal); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
681 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
682 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
683 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
684 | QualType() = default; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
685 | QualType(const Type *Ptr, unsigned Quals) : Value(Ptr, Quals) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
686 | QualType(const ExtQuals *Ptr, unsigned Quals) : Value(Ptr, Quals) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
687 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
688 | unsigned getLocalFastQualifiers() const { return Value.getInt(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
689 | void setLocalFastQualifiers(unsigned Quals) { Value.setInt(Quals); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
690 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
691 | /// Retrieves a pointer to the underlying (unqualified) type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
692 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
693 | /// This function requires that the type not be NULL. If the type might be | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
694 | /// NULL, use the (slightly less efficient) \c getTypePtrOrNull(). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
695 | const Type *getTypePtr() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
696 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
697 | const Type *getTypePtrOrNull() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
698 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
699 | /// Retrieves a pointer to the name of the base type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
700 | const IdentifierInfo *getBaseTypeIdentifier() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
701 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
702 | /// Divides a QualType into its unqualified type and a set of local | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
703 | /// qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
704 | SplitQualType split() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
705 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
706 | void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
707 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
708 | static QualType getFromOpaquePtr(const void *Ptr) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
709 | QualType T; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
710 | T.Value.setFromOpaqueValue(const_cast<void*>(Ptr)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
711 | return T; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
712 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
713 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
714 | const Type &operator*() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
715 | return *getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
716 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
717 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
718 | const Type *operator->() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
719 | return getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
720 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
721 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
722 | bool isCanonical() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
723 | bool isCanonicalAsParam() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
724 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
725 | /// Return true if this QualType doesn't point to a type yet. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
726 | bool isNull() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
727 | return Value.getPointer().isNull(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
728 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
729 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
730 | /// Determine whether this particular QualType instance has the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
731 | /// "const" qualifier set, without looking through typedefs that may have | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
732 | /// added "const" at a different level. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
733 | bool isLocalConstQualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
734 | return (getLocalFastQualifiers() & Qualifiers::Const); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
735 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
736 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
737 | /// Determine whether this type is const-qualified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
738 | bool isConstQualified() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
739 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
740 | /// Determine whether this particular QualType instance has the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
741 | /// "restrict" qualifier set, without looking through typedefs that may have | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
742 | /// added "restrict" at a different level. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
743 | bool isLocalRestrictQualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
744 | return (getLocalFastQualifiers() & Qualifiers::Restrict); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
745 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
746 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
747 | /// Determine whether this type is restrict-qualified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
748 | bool isRestrictQualified() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
749 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
750 | /// Determine whether this particular QualType instance has the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
751 | /// "volatile" qualifier set, without looking through typedefs that may have | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
752 | /// added "volatile" at a different level. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
753 | bool isLocalVolatileQualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
754 | return (getLocalFastQualifiers() & Qualifiers::Volatile); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
755 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
756 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
757 | /// Determine whether this type is volatile-qualified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
758 | bool isVolatileQualified() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
759 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
760 | /// Determine whether this particular QualType instance has any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
761 | /// qualifiers, without looking through any typedefs that might add | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
762 | /// qualifiers at a different level. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
763 | bool hasLocalQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
764 | return getLocalFastQualifiers() || hasLocalNonFastQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
765 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
766 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
767 | /// Determine whether this type has any qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
768 | bool hasQualifiers() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
769 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
770 | /// Determine whether this particular QualType instance has any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
771 | /// "non-fast" qualifiers, e.g., those that are stored in an ExtQualType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
772 | /// instance. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
773 | bool hasLocalNonFastQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
774 | return Value.getPointer().is<const ExtQuals*>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
775 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
776 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
777 | /// Retrieve the set of qualifiers local to this particular QualType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
778 | /// instance, not including any qualifiers acquired through typedefs or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
779 | /// other sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
780 | Qualifiers getLocalQualifiers() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
781 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
782 | /// Retrieve the set of qualifiers applied to this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
783 | Qualifiers getQualifiers() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
784 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
785 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
786 | /// local to this particular QualType instance, not including any qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
787 | /// acquired through typedefs or other sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
788 | unsigned getLocalCVRQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
789 | return getLocalFastQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
790 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
791 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
792 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
793 | /// applied to this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
794 | unsigned getCVRQualifiers() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
795 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
796 | bool isConstant(const ASTContext& Ctx) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
797 | return QualType::isConstant(*this, Ctx); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
798 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
799 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
800 | /// Determine whether this is a Plain Old Data (POD) type (C++ 3.9p10). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
801 | bool isPODType(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
802 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
803 | /// Return true if this is a POD type according to the rules of the C++98 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
804 | /// standard, regardless of the current compilation's language. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
805 | bool isCXX98PODType(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
806 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
807 | /// Return true if this is a POD type according to the more relaxed rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
808 | /// of the C++11 standard, regardless of the current compilation's language. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
809 | /// (C++0x [basic.types]p9). Note that, unlike | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
810 | /// CXXRecordDecl::isCXX11StandardLayout, this takes DRs into account. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
811 | bool isCXX11PODType(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
812 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
813 | /// Return true if this is a trivial type per (C++0x [basic.types]p9) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
814 | bool isTrivialType(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
815 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
816 | /// Return true if this is a trivially copyable type (C++0x [basic.types]p9) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
817 | bool isTriviallyCopyableType(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
818 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
819 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
820 | /// Returns true if it is a class and it might be dynamic. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
821 | bool mayBeDynamicClass() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
822 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
823 | /// Returns true if it is not a class or if the class might not be dynamic. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
824 | bool mayBeNotDynamicClass() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
825 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
826 | // Don't promise in the API that anything besides 'const' can be | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
827 | // easily added. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
828 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
829 | /// Add the `const` type qualifier to this QualType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
830 | void addConst() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
831 | addFastQualifiers(Qualifiers::Const); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
832 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
833 | QualType withConst() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
834 | return withFastQualifiers(Qualifiers::Const); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
835 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
836 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
837 | /// Add the `volatile` type qualifier to this QualType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
838 | void addVolatile() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
839 | addFastQualifiers(Qualifiers::Volatile); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
840 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
841 | QualType withVolatile() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
842 | return withFastQualifiers(Qualifiers::Volatile); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
843 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
844 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
845 | /// Add the `restrict` qualifier to this QualType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
846 | void addRestrict() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
847 | addFastQualifiers(Qualifiers::Restrict); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
848 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
849 | QualType withRestrict() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
850 | return withFastQualifiers(Qualifiers::Restrict); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
851 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
852 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
853 | QualType withCVRQualifiers(unsigned CVR) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
854 | return withFastQualifiers(CVR); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
855 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
856 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
857 | void addFastQualifiers(unsigned TQs) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
858 | assert(!(TQs & ~Qualifiers::FastMask)((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!" ) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 859, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
859 | && "non-fast qualifier bits set in mask!")((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!" ) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 859, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
860 | Value.setInt(Value.getInt() | TQs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
861 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
862 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
863 | void removeLocalConst(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
864 | void removeLocalVolatile(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
865 | void removeLocalRestrict(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
866 | void removeLocalCVRQualifiers(unsigned Mask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
867 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
868 | void removeLocalFastQualifiers() { Value.setInt(0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
869 | void removeLocalFastQualifiers(unsigned Mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
870 | assert(!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers")((!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::FastMask) && \"mask has non-fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 870, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
871 | Value.setInt(Value.getInt() & ~Mask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
872 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
873 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
874 | // Creates a type with the given qualifiers in addition to any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
875 | // qualifiers already on this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
876 | QualType withFastQualifiers(unsigned TQs) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
877 | QualType T = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
878 | T.addFastQualifiers(TQs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
879 | return T; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
880 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
881 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
882 | // Creates a type with exactly the given fast qualifiers, removing | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
883 | // any existing fast qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
884 | QualType withExactLocalFastQualifiers(unsigned TQs) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
885 | return withoutLocalFastQualifiers().withFastQualifiers(TQs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
886 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
887 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
888 | // Removes fast qualifiers, but leaves any extended qualifiers in place. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
889 | QualType withoutLocalFastQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
890 | QualType T = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
891 | T.removeLocalFastQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
892 | return T; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
893 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
894 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
895 | QualType getCanonicalType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
896 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
897 | /// Return this type with all of the instance-specific qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
898 | /// removed, but without removing any qualifiers that may have been applied | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
899 | /// through typedefs. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
900 | QualType getLocalUnqualifiedType() const { return QualType(getTypePtr(), 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
901 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
902 | /// Retrieve the unqualified variant of the given type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
903 | /// removing as little sugar as possible. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
904 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
905 | /// This routine looks through various kinds of sugar to find the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
906 | /// least-desugared type that is unqualified. For example, given: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
907 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
908 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
909 | /// typedef int Integer; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
910 | /// typedef const Integer CInteger; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
911 | /// typedef CInteger DifferenceType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
912 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
913 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
914 | /// Executing \c getUnqualifiedType() on the type \c DifferenceType will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
915 | /// desugar until we hit the type \c Integer, which has no qualifiers on it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
916 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
917 | /// The resulting type might still be qualified if it's sugar for an array | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
918 | /// type. To strip qualifiers even from within a sugared array type, use | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
919 | /// ASTContext::getUnqualifiedArrayType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
920 | inline QualType getUnqualifiedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
921 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
922 | /// Retrieve the unqualified variant of the given type, removing as little | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
923 | /// sugar as possible. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
924 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
925 | /// Like getUnqualifiedType(), but also returns the set of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
926 | /// qualifiers that were built up. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
927 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
928 | /// The resulting type might still be qualified if it's sugar for an array | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
929 | /// type. To strip qualifiers even from within a sugared array type, use | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
930 | /// ASTContext::getUnqualifiedArrayType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
931 | inline SplitQualType getSplitUnqualifiedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
932 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
933 | /// Determine whether this type is more qualified than the other | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
934 | /// given type, requiring exact equality for non-CVR qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
935 | bool isMoreQualifiedThan(QualType Other) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
936 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
937 | /// Determine whether this type is at least as qualified as the other | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
938 | /// given type, requiring exact equality for non-CVR qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
939 | bool isAtLeastAsQualifiedAs(QualType Other) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
940 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
941 | QualType getNonReferenceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
942 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
943 | /// Determine the type of a (typically non-lvalue) expression with the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
944 | /// specified result type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
945 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
946 | /// This routine should be used for expressions for which the return type is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
947 | /// explicitly specified (e.g., in a cast or call) and isn't necessarily | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
948 | /// an lvalue. It removes a top-level reference (since there are no | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
949 | /// expressions of reference type) and deletes top-level cvr-qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
950 | /// from non-class types (in C++) or all types (in C). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
951 | QualType getNonLValueExprType(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
952 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
953 | /// Remove an outer pack expansion type (if any) from this type. Used as part | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
954 | /// of converting the type of a declaration to the type of an expression that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
955 | /// references that expression. It's meaningless for an expression to have a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
956 | /// pack expansion type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
957 | QualType getNonPackExpansionType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
958 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
959 | /// Return the specified type with any "sugar" removed from | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
960 | /// the type. This takes off typedefs, typeof's etc. If the outer level of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
961 | /// the type is already concrete, it returns it unmodified. This is similar | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
962 | /// to getting the canonical type, but it doesn't remove *all* typedefs. For | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
963 | /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
964 | /// concrete. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
965 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
966 | /// Qualifiers are left in place. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
967 | QualType getDesugaredType(const ASTContext &Context) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
968 | return getDesugaredType(*this, Context); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
969 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
970 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
971 | SplitQualType getSplitDesugaredType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
972 | return getSplitDesugaredType(*this); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
973 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
974 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
975 | /// Return the specified type with one level of "sugar" removed from | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
976 | /// the type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
977 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
978 | /// This routine takes off the first typedef, typeof, etc. If the outer level | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
979 | /// of the type is already concrete, it returns it unmodified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
980 | QualType getSingleStepDesugaredType(const ASTContext &Context) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
981 | return getSingleStepDesugaredTypeImpl(*this, Context); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
982 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
983 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
984 | /// Returns the specified type after dropping any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
985 | /// outer-level parentheses. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
986 | QualType IgnoreParens() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
987 | if (isa<ParenType>(*this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
988 | return QualType::IgnoreParens(*this); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
989 | return *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
990 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
991 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
992 | /// Indicate whether the specified types and qualifiers are identical. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
993 | friend bool operator==(const QualType &LHS, const QualType &RHS) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
994 | return LHS.Value == RHS.Value; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
995 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
996 | friend bool operator!=(const QualType &LHS, const QualType &RHS) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
997 | return LHS.Value != RHS.Value; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
998 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
999 | friend bool operator<(const QualType &LHS, const QualType &RHS) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1000 | return LHS.Value < RHS.Value; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1001 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1003 | static std::string getAsString(SplitQualType split, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1004 | const PrintingPolicy &Policy) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1005 | return getAsString(split.Ty, split.Quals, Policy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1006 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1007 | static std::string getAsString(const Type *ty, Qualifiers qs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1008 | const PrintingPolicy &Policy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1009 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1010 | std::string getAsString() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1011 | std::string getAsString(const PrintingPolicy &Policy) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1012 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1013 | void print(raw_ostream &OS, const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1014 | const Twine &PlaceHolder = Twine(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1015 | unsigned Indentation = 0) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1016 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1017 | static void print(SplitQualType split, raw_ostream &OS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1018 | const PrintingPolicy &policy, const Twine &PlaceHolder, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1019 | unsigned Indentation = 0) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1020 | return print(split.Ty, split.Quals, OS, policy, PlaceHolder, Indentation); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1021 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1023 | static void print(const Type *ty, Qualifiers qs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1024 | raw_ostream &OS, const PrintingPolicy &policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1025 | const Twine &PlaceHolder, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1026 | unsigned Indentation = 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1027 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1028 | void getAsStringInternal(std::string &Str, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1029 | const PrintingPolicy &Policy) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1030 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1031 | static void getAsStringInternal(SplitQualType split, std::string &out, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1032 | const PrintingPolicy &policy) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1033 | return getAsStringInternal(split.Ty, split.Quals, out, policy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1034 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1035 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1036 | static void getAsStringInternal(const Type *ty, Qualifiers qs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1037 | std::string &out, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1038 | const PrintingPolicy &policy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1039 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1040 | class StreamedQualTypeHelper { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1041 | const QualType &T; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1042 | const PrintingPolicy &Policy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1043 | const Twine &PlaceHolder; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1044 | unsigned Indentation; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1045 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1046 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1047 | StreamedQualTypeHelper(const QualType &T, const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1048 | const Twine &PlaceHolder, unsigned Indentation) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1049 | : T(T), Policy(Policy), PlaceHolder(PlaceHolder), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1050 | Indentation(Indentation) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1051 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1052 | friend raw_ostream &operator<<(raw_ostream &OS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1053 | const StreamedQualTypeHelper &SQT) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1054 | SQT.T.print(OS, SQT.Policy, SQT.PlaceHolder, SQT.Indentation); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1055 | return OS; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1056 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1057 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1058 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1059 | StreamedQualTypeHelper stream(const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1060 | const Twine &PlaceHolder = Twine(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1061 | unsigned Indentation = 0) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1062 | return StreamedQualTypeHelper(*this, Policy, PlaceHolder, Indentation); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1063 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1064 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1065 | void dump(const char *s) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1066 | void dump() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1067 | void dump(llvm::raw_ostream &OS, const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1068 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1069 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1070 | ID.AddPointer(getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1071 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1072 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1073 | /// Check if this type has any address space qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1074 | inline bool hasAddressSpace() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1075 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1076 | /// Return the address space of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1077 | inline LangAS getAddressSpace() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1078 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1079 | /// Returns true if address space qualifiers overlap with T address space | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1080 | /// qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1081 | /// OpenCL C defines conversion rules for pointers to different address spaces | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1082 | /// and notion of overlapping address spaces. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1083 | /// CL1.1 or CL1.2: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1084 | /// address spaces overlap iff they are they same. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1085 | /// OpenCL C v2.0 s6.5.5 adds: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1086 | /// __generic overlaps with any address space except for __constant. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1087 | bool isAddressSpaceOverlapping(QualType T) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1088 | Qualifiers Q = getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1089 | Qualifiers TQ = T.getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1090 | // Address spaces overlap if at least one of them is a superset of another | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1091 | return Q.isAddressSpaceSupersetOf(TQ) || TQ.isAddressSpaceSupersetOf(Q); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1092 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1093 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1094 | /// Returns gc attribute of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1095 | inline Qualifiers::GC getObjCGCAttr() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1096 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1097 | /// true when Type is objc's weak. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1098 | bool isObjCGCWeak() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1099 | return getObjCGCAttr() == Qualifiers::Weak; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1100 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1101 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1102 | /// true when Type is objc's strong. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1103 | bool isObjCGCStrong() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1104 | return getObjCGCAttr() == Qualifiers::Strong; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1105 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1106 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1107 | /// Returns lifetime attribute of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1108 | Qualifiers::ObjCLifetime getObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1109 | return getQualifiers().getObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1110 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1111 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1112 | bool hasNonTrivialObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1113 | return getQualifiers().hasNonTrivialObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1114 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1115 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1116 | bool hasStrongOrWeakObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1117 | return getQualifiers().hasStrongOrWeakObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1118 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1119 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1120 | // true when Type is objc's weak and weak is enabled but ARC isn't. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1121 | bool isNonWeakInMRRWithObjCWeak(const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1122 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1123 | enum PrimitiveDefaultInitializeKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1124 | /// The type does not fall into any of the following categories. Note that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1125 | /// this case is zero-valued so that values of this enum can be used as a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1126 | /// boolean condition for non-triviality. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1127 | PDIK_Trivial, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1128 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1129 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1130 | /// with the ARC __strong qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1131 | PDIK_ARCStrong, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1132 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1133 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1134 | /// with the ARC __weak qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1135 | PDIK_ARCWeak, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1136 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1137 | /// The type is a struct containing a field whose type is not PCK_Trivial. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1138 | PDIK_Struct | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1139 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1140 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1141 | /// Functions to query basic properties of non-trivial C struct types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1142 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1143 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1144 | /// transitively containing this type to be non-trivial to default initialize | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1145 | /// and return the kind. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1146 | PrimitiveDefaultInitializeKind | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1147 | isNonTrivialToPrimitiveDefaultInitialize() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1148 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1149 | enum PrimitiveCopyKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1150 | /// The type does not fall into any of the following categories. Note that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1151 | /// this case is zero-valued so that values of this enum can be used as a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1152 | /// boolean condition for non-triviality. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1153 | PCK_Trivial, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1154 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1155 | /// The type would be trivial except that it is volatile-qualified. Types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1156 | /// that fall into one of the other non-trivial cases may additionally be | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1157 | /// volatile-qualified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1158 | PCK_VolatileTrivial, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1159 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1160 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1161 | /// with the ARC __strong qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1162 | PCK_ARCStrong, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1163 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1164 | /// The type is an Objective-C retainable pointer type that is qualified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1165 | /// with the ARC __weak qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1166 | PCK_ARCWeak, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1167 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1168 | /// The type is a struct containing a field whose type is neither | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1169 | /// PCK_Trivial nor PCK_VolatileTrivial. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1170 | /// Note that a C++ struct type does not necessarily match this; C++ copying | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1171 | /// semantics are too complex to express here, in part because they depend | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1172 | /// on the exact constructor or assignment operator that is chosen by | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1173 | /// overload resolution to do the copy. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1174 | PCK_Struct | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1175 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1176 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1177 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1178 | /// transitively containing this type to be non-trivial to copy and return the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1179 | /// kind. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1180 | PrimitiveCopyKind isNonTrivialToPrimitiveCopy() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1181 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1182 | /// Check if this is a non-trivial type that would cause a C struct | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1183 | /// transitively containing this type to be non-trivial to destructively | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1184 | /// move and return the kind. Destructive move in this context is a C++-style | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1185 | /// move in which the source object is placed in a valid but unspecified state | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1186 | /// after it is moved, as opposed to a truly destructive move in which the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1187 | /// source object is placed in an uninitialized state. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1188 | PrimitiveCopyKind isNonTrivialToPrimitiveDestructiveMove() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1189 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1190 | enum DestructionKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1191 | DK_none, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1192 | DK_cxx_destructor, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1193 | DK_objc_strong_lifetime, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1194 | DK_objc_weak_lifetime, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1195 | DK_nontrivial_c_struct | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1196 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1197 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1198 | /// Returns a nonzero value if objects of this type require | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1199 | /// non-trivial work to clean up after. Non-zero because it's | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1200 | /// conceivable that qualifiers (objc_gc(weak)?) could make | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1201 | /// something require destruction. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1202 | DestructionKind isDestructedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1203 | return isDestructedTypeImpl(*this); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1204 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1205 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1206 | /// Check if this is or contains a C union that is non-trivial to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1207 | /// default-initialize, which is a union that has a member that is non-trivial | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1208 | /// to default-initialize. If this returns true, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1209 | /// isNonTrivialToPrimitiveDefaultInitialize returns PDIK_Struct. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1210 | bool hasNonTrivialToPrimitiveDefaultInitializeCUnion() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1211 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1212 | /// Check if this is or contains a C union that is non-trivial to destruct, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1213 | /// which is a union that has a member that is non-trivial to destruct. If | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1214 | /// this returns true, isDestructedType returns DK_nontrivial_c_struct. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1215 | bool hasNonTrivialToPrimitiveDestructCUnion() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1216 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1217 | /// Check if this is or contains a C union that is non-trivial to copy, which | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1218 | /// is a union that has a member that is non-trivial to copy. If this returns | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1219 | /// true, isNonTrivialToPrimitiveCopy returns PCK_Struct. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1220 | bool hasNonTrivialToPrimitiveCopyCUnion() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1221 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1222 | /// Determine whether expressions of the given type are forbidden | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1223 | /// from being lvalues in C. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1224 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1225 | /// The expression types that are forbidden to be lvalues are: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1226 | /// - 'void', but not qualified void | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1227 | /// - function types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1228 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1229 | /// The exact rule here is C99 6.3.2.1: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1230 | /// An lvalue is an expression with an object type or an incomplete | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1231 | /// type other than void. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1232 | bool isCForbiddenLValueType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1233 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1234 | /// Substitute type arguments for the Objective-C type parameters used in the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1235 | /// subject type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1236 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1237 | /// \param ctx ASTContext in which the type exists. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1238 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1239 | /// \param typeArgs The type arguments that will be substituted for the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1240 | /// Objective-C type parameters in the subject type, which are generally | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1241 | /// computed via \c Type::getObjCSubstitutions. If empty, the type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1242 | /// parameters will be replaced with their bounds or id/Class, as appropriate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1243 | /// for the context. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1244 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1245 | /// \param context The context in which the subject type was written. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1246 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1247 | /// \returns the resulting type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1248 | QualType substObjCTypeArgs(ASTContext &ctx, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1249 | ArrayRef<QualType> typeArgs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1250 | ObjCSubstitutionContext context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1251 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1252 | /// Substitute type arguments from an object type for the Objective-C type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1253 | /// parameters used in the subject type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1254 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1255 | /// This operation combines the computation of type arguments for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1256 | /// substitution (\c Type::getObjCSubstitutions) with the actual process of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1257 | /// substitution (\c QualType::substObjCTypeArgs) for the convenience of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1258 | /// callers that need to perform a single substitution in isolation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1259 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1260 | /// \param objectType The type of the object whose member type we're | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1261 | /// substituting into. For example, this might be the receiver of a message | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1262 | /// or the base of a property access. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1263 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1264 | /// \param dc The declaration context from which the subject type was | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1265 | /// retrieved, which indicates (for example) which type parameters should | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1266 | /// be substituted. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1267 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1268 | /// \param context The context in which the subject type was written. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1269 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1270 | /// \returns the subject type after replacing all of the Objective-C type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1271 | /// parameters with their corresponding arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1272 | QualType substObjCMemberType(QualType objectType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1273 | const DeclContext *dc, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1274 | ObjCSubstitutionContext context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1275 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1276 | /// Strip Objective-C "__kindof" types from the given type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1277 | QualType stripObjCKindOfType(const ASTContext &ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1278 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1279 | /// Remove all qualifiers including _Atomic. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1280 | QualType getAtomicUnqualifiedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1281 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1282 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1283 | // These methods are implemented in a separate translation unit; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1284 | // "static"-ize them to avoid creating temporary QualTypes in the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1285 | // caller. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1286 | static bool isConstant(QualType T, const ASTContext& Ctx); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1287 | static QualType getDesugaredType(QualType T, const ASTContext &Context); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1288 | static SplitQualType getSplitDesugaredType(QualType T); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1289 | static SplitQualType getSplitUnqualifiedTypeImpl(QualType type); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1290 | static QualType getSingleStepDesugaredTypeImpl(QualType type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1291 | const ASTContext &C); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1292 | static QualType IgnoreParens(QualType T); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1293 | static DestructionKind isDestructedTypeImpl(QualType type); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1294 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1295 | /// Check if \param RD is or contains a non-trivial C union. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1296 | static bool hasNonTrivialToPrimitiveDefaultInitializeCUnion(const RecordDecl *RD); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1297 | static bool hasNonTrivialToPrimitiveDestructCUnion(const RecordDecl *RD); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1298 | static bool hasNonTrivialToPrimitiveCopyCUnion(const RecordDecl *RD); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1299 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1300 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1301 | } // namespace clang | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1302 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1303 | namespace llvm { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1304 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1305 | /// Implement simplify_type for QualType, so that we can dyn_cast from QualType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1306 | /// to a specific Type class. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1307 | template<> struct simplify_type< ::clang::QualType> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1308 | using SimpleType = const ::clang::Type *; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1309 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1310 | static SimpleType getSimplifiedValue(::clang::QualType Val) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1311 | return Val.getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1312 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1313 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1314 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1315 | // Teach SmallPtrSet that QualType is "basically a pointer". | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1316 | template<> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1317 | struct PointerLikeTypeTraits<clang::QualType> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1318 | static inline void *getAsVoidPointer(clang::QualType P) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1319 | return P.getAsOpaquePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1320 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1321 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1322 | static inline clang::QualType getFromVoidPointer(void *P) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1323 | return clang::QualType::getFromOpaquePtr(P); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1324 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1325 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1326 | // Various qualifiers go in low bits. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1327 | static constexpr int NumLowBitsAvailable = 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1328 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1329 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1330 | } // namespace llvm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1331 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1332 | namespace clang { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1333 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1334 | /// Base class that is common to both the \c ExtQuals and \c Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1335 | /// classes, which allows \c QualType to access the common fields between the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1336 | /// two. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1337 | class ExtQualsTypeCommonBase { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1338 | friend class ExtQuals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1339 | friend class QualType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1340 | friend class Type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1341 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1342 | /// The "base" type of an extended qualifiers type (\c ExtQuals) or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1343 | /// a self-referential pointer (for \c Type). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1344 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1345 | /// This pointer allows an efficient mapping from a QualType to its | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1346 | /// underlying type pointer. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1347 | const Type *const BaseType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1348 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1349 | /// The canonical type of this type. A QualType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1350 | QualType CanonicalType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1351 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1352 | ExtQualsTypeCommonBase(const Type *baseType, QualType canon) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1353 | : BaseType(baseType), CanonicalType(canon) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1354 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1355 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1356 | /// We can encode up to four bits in the low bits of a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1357 | /// type pointer, but there are many more type qualifiers that we want | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1358 | /// to be able to apply to an arbitrary type. Therefore we have this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1359 | /// struct, intended to be heap-allocated and used by QualType to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1360 | /// store qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1361 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1362 | /// The current design tags the 'const', 'restrict', and 'volatile' qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1363 | /// in three low bits on the QualType pointer; a fourth bit records whether | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1364 | /// the pointer is an ExtQuals node. The extended qualifiers (address spaces, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1365 | /// Objective-C GC attributes) are much more rare. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1366 | class ExtQuals : public ExtQualsTypeCommonBase, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1367 | // NOTE: changing the fast qualifiers should be straightforward as | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1368 | // long as you don't make 'const' non-fast. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1369 | // 1. Qualifiers: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1370 | // a) Modify the bitmasks (Qualifiers::TQ and DeclSpec::TQ). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1371 | // Fast qualifiers must occupy the low-order bits. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1372 | // b) Update Qualifiers::FastWidth and FastMask. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1373 | // 2. QualType: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1374 | // a) Update is{Volatile,Restrict}Qualified(), defined inline. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1375 | // b) Update remove{Volatile,Restrict}, defined near the end of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1376 | // this header. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1377 | // 3. ASTContext: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1378 | // a) Update get{Volatile,Restrict}Type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1379 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1380 | /// The immutable set of qualifiers applied by this node. Always contains | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1381 | /// extended qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1382 | Qualifiers Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1383 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1384 | ExtQuals *this_() { return this; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1385 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1386 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1387 | ExtQuals(const Type *baseType, QualType canon, Qualifiers quals) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1388 | : ExtQualsTypeCommonBase(baseType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1389 | canon.isNull() ? QualType(this_(), 0) : canon), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1390 | Quals(quals) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1391 | assert(Quals.hasNonFastQualifiers()((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1392, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1392 | && "ExtQuals created with no fast qualifiers")((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1392, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1393 | assert(!Quals.hasFastQualifiers()((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1394, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1394 | && "ExtQuals created with fast qualifiers")((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1394, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1395 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1396 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1397 | Qualifiers getQualifiers() const { return Quals; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1398 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1399 | bool hasObjCGCAttr() const { return Quals.hasObjCGCAttr(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1400 | Qualifiers::GC getObjCGCAttr() const { return Quals.getObjCGCAttr(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1401 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1402 | bool hasObjCLifetime() const { return Quals.hasObjCLifetime(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1403 | Qualifiers::ObjCLifetime getObjCLifetime() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1404 | return Quals.getObjCLifetime(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1405 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1406 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1407 | bool hasAddressSpace() const { return Quals.hasAddressSpace(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1408 | LangAS getAddressSpace() const { return Quals.getAddressSpace(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1409 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1410 | const Type *getBaseType() const { return BaseType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1411 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1412 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1413 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1414 | Profile(ID, getBaseType(), Quals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1415 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1416 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1417 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1418 | const Type *BaseType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1419 | Qualifiers Quals) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1420 | assert(!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!")((!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"fast qualifiers in ExtQuals hash!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1420, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1421 | ID.AddPointer(BaseType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1422 | Quals.Profile(ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1423 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1424 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1425 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1426 | /// The kind of C++11 ref-qualifier associated with a function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1427 | /// This determines whether a member function's "this" object can be an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1428 | /// lvalue, rvalue, or neither. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1429 | enum RefQualifierKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1430 | /// No ref-qualifier was provided. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1431 | RQ_None = 0, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1432 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1433 | /// An lvalue ref-qualifier was provided (\c &). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1434 | RQ_LValue, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1435 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1436 | /// An rvalue ref-qualifier was provided (\c &&). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1437 | RQ_RValue | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1438 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1439 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1440 | /// Which keyword(s) were used to create an AutoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1441 | enum class AutoTypeKeyword { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1442 | /// auto | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1443 | Auto, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1444 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1445 | /// decltype(auto) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1446 | DecltypeAuto, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1447 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1448 | /// __auto_type (GNU extension) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1449 | GNUAutoType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1450 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1451 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1452 | /// The base class of the type hierarchy. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1453 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1454 | /// A central concept with types is that each type always has a canonical | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1455 | /// type. A canonical type is the type with any typedef names stripped out | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1456 | /// of it or the types it references. For example, consider: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1457 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1458 | /// typedef int foo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1459 | /// typedef foo* bar; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1460 | /// 'int *' 'foo *' 'bar' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1461 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1462 | /// There will be a Type object created for 'int'. Since int is canonical, its | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1463 | /// CanonicalType pointer points to itself. There is also a Type for 'foo' (a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1464 | /// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1465 | /// there is a PointerType that represents 'int*', which, like 'int', is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1466 | /// canonical. Finally, there is a PointerType type for 'foo*' whose canonical | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1467 | /// type is 'int*', and there is a TypedefType for 'bar', whose canonical type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1468 | /// is also 'int*'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1469 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1470 | /// Non-canonical types are useful for emitting diagnostics, without losing | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1471 | /// information about typedefs being used. Canonical types are useful for type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1472 | /// comparisons (they allow by-pointer equality tests) and useful for reasoning | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1473 | /// about whether something has a particular form (e.g. is a function type), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1474 | /// because they implicitly, recursively, strip all typedefs out of a type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1475 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1476 | /// Types, once created, are immutable. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1477 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1478 | class alignas(8) Type : public ExtQualsTypeCommonBase { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1479 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1480 | enum TypeClass { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1481 | #define TYPE(Class, Base) Class, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1482 | #define LAST_TYPE(Class) TypeLast = Class | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1483 | #define ABSTRACT_TYPE(Class, Base) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1484 | #include "clang/AST/TypeNodes.inc" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1485 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1486 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1487 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1488 | /// Bitfields required by the Type class. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1489 | class TypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1490 | friend class Type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1491 | template <class T> friend class TypePropertyCache; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1492 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1493 | /// TypeClass bitfield - Enum that specifies what subclass this belongs to. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1494 | unsigned TC : 8; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1495 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1496 | /// Store information on the type dependency. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1497 | unsigned Dependence : llvm::BitWidth<TypeDependence>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1498 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1499 | /// True if the cache (i.e. the bitfields here starting with | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1500 | /// 'Cache') is valid. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1501 | mutable unsigned CacheValid : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1502 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1503 | /// Linkage of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1504 | mutable unsigned CachedLinkage : 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1505 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1506 | /// Whether this type involves and local or unnamed types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1507 | mutable unsigned CachedLocalOrUnnamed : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1508 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1509 | /// Whether this type comes from an AST file. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1510 | mutable unsigned FromAST : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1511 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1512 | bool isCacheValid() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1513 | return CacheValid; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1514 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1515 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1516 | Linkage getLinkage() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1517 | assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache" ) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1517, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1518 | return static_cast<Linkage>(CachedLinkage); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1519 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1520 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1521 | bool hasLocalOrUnnamedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1522 | assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache" ) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 1522, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1523 | return CachedLocalOrUnnamed; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1524 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1525 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1526 | enum { NumTypeBits = 8 + llvm::BitWidth<TypeDependence> + 6 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1527 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1528 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1529 | // These classes allow subclasses to somewhat cleanly pack bitfields | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1530 | // into Type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1531 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1532 | class ArrayTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1533 | friend class ArrayType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1534 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1535 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1536 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1537 | /// CVR qualifiers from declarations like | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1538 | /// 'int X[static restrict 4]'. For function parameters only. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1539 | unsigned IndexTypeQuals : 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1540 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1541 | /// Storage class qualifiers from declarations like | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1542 | /// 'int X[static restrict 4]'. For function parameters only. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1543 | /// Actually an ArrayType::ArraySizeModifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1544 | unsigned SizeModifier : 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1545 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1546 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1547 | class ConstantArrayTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1548 | friend class ConstantArrayType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1549 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1550 | unsigned : NumTypeBits + 3 + 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1551 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1552 | /// Whether we have a stored size expression. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1553 | unsigned HasStoredSizeExpr : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1554 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1555 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1556 | class BuiltinTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1557 | friend class BuiltinType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1558 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1559 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1560 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1561 | /// The kind (BuiltinType::Kind) of builtin type this is. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1562 | unsigned Kind : 8; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1563 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1564 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1565 | /// FunctionTypeBitfields store various bits belonging to FunctionProtoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1566 | /// Only common bits are stored here. Additional uncommon bits are stored | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1567 | /// in a trailing object after FunctionProtoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1568 | class FunctionTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1569 | friend class FunctionProtoType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1570 | friend class FunctionType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1571 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1572 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1573 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1574 | /// Extra information which affects how the function is called, like | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1575 | /// regparm and the calling convention. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1576 | unsigned ExtInfo : 13; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1577 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1578 | /// The ref-qualifier associated with a \c FunctionProtoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1579 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1580 | /// This is a value of type \c RefQualifierKind. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1581 | unsigned RefQualifier : 2; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1582 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1583 | /// Used only by FunctionProtoType, put here to pack with the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1584 | /// other bitfields. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1585 | /// The qualifiers are part of FunctionProtoType because... | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1586 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1587 | /// C++ 8.3.5p4: The return type, the parameter type list and the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1588 | /// cv-qualifier-seq, [...], are part of the function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1589 | unsigned FastTypeQuals : Qualifiers::FastWidth; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1590 | /// Whether this function has extended Qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1591 | unsigned HasExtQuals : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1592 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1593 | /// The number of parameters this function has, not counting '...'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1594 | /// According to [implimits] 8 bits should be enough here but this is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1595 | /// somewhat easy to exceed with metaprogramming and so we would like to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1596 | /// keep NumParams as wide as reasonably possible. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1597 | unsigned NumParams : 16; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1598 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1599 | /// The type of exception specification this function has. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1600 | unsigned ExceptionSpecType : 4; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1601 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1602 | /// Whether this function has extended parameter information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1603 | unsigned HasExtParameterInfos : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1604 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1605 | /// Whether the function is variadic. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1606 | unsigned Variadic : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1607 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1608 | /// Whether this function has a trailing return type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1609 | unsigned HasTrailingReturn : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1610 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1611 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1612 | class ObjCObjectTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1613 | friend class ObjCObjectType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1614 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1615 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1616 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1617 | /// The number of type arguments stored directly on this object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1618 | unsigned NumTypeArgs : 7; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1619 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1620 | /// The number of protocols stored directly on this object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1621 | unsigned NumProtocols : 6; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1622 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1623 | /// Whether this is a "kindof" type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1624 | unsigned IsKindOf : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1625 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1626 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1627 | class ReferenceTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1628 | friend class ReferenceType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1629 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1630 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1631 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1632 | /// True if the type was originally spelled with an lvalue sigil. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1633 | /// This is never true of rvalue references but can also be false | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1634 | /// on lvalue references because of C++0x [dcl.typedef]p9, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1635 | /// as follows: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1636 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1637 | /// typedef int &ref; // lvalue, spelled lvalue | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1638 | /// typedef int &&rvref; // rvalue | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1639 | /// ref &a; // lvalue, inner ref, spelled lvalue | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1640 | /// ref &&a; // lvalue, inner ref | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1641 | /// rvref &a; // lvalue, inner ref, spelled lvalue | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1642 | /// rvref &&a; // rvalue, inner ref | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1643 | unsigned SpelledAsLValue : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1644 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1645 | /// True if the inner type is a reference type. This only happens | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1646 | /// in non-canonical forms. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1647 | unsigned InnerRef : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1648 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1649 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1650 | class TypeWithKeywordBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1651 | friend class TypeWithKeyword; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1652 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1653 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1654 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1655 | /// An ElaboratedTypeKeyword. 8 bits for efficient access. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1656 | unsigned Keyword : 8; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1657 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1658 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1659 | enum { NumTypeWithKeywordBits = 8 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1660 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1661 | class ElaboratedTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1662 | friend class ElaboratedType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1663 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1664 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1665 | unsigned : NumTypeWithKeywordBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1666 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1667 | /// Whether the ElaboratedType has a trailing OwnedTagDecl. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1668 | unsigned HasOwnedTagDecl : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1669 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1670 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1671 | class VectorTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1672 | friend class VectorType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1673 | friend class DependentVectorType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1674 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1675 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1676 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1677 | /// The kind of vector, either a generic vector type or some | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1678 | /// target-specific vector type such as for AltiVec or Neon. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1679 | unsigned VecKind : 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1680 | /// The number of elements in the vector. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1681 | uint32_t NumElements; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1682 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1683 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1684 | class AttributedTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1685 | friend class AttributedType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1686 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1687 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1688 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1689 | /// An AttributedType::Kind | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1690 | unsigned AttrKind : 32 - NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1691 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1692 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1693 | class AutoTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1694 | friend class AutoType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1695 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1696 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1697 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1698 | /// Was this placeholder type spelled as 'auto', 'decltype(auto)', | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1699 | /// or '__auto_type'? AutoTypeKeyword value. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1700 | unsigned Keyword : 2; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1701 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1702 | /// The number of template arguments in the type-constraints, which is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1703 | /// expected to be able to hold at least 1024 according to [implimits]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1704 | /// However as this limit is somewhat easy to hit with template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1705 | /// metaprogramming we'd prefer to keep it as large as possible. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1706 | /// At the moment it has been left as a non-bitfield since this type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1707 | /// safely fits in 64 bits as an unsigned, so there is no reason to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1708 | /// introduce the performance impact of a bitfield. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1709 | unsigned NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1710 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1711 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1712 | class SubstTemplateTypeParmPackTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1713 | friend class SubstTemplateTypeParmPackType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1714 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1715 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1716 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1717 | /// The number of template arguments in \c Arguments, which is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1718 | /// expected to be able to hold at least 1024 according to [implimits]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1719 | /// However as this limit is somewhat easy to hit with template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1720 | /// metaprogramming we'd prefer to keep it as large as possible. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1721 | /// At the moment it has been left as a non-bitfield since this type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1722 | /// safely fits in 64 bits as an unsigned, so there is no reason to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1723 | /// introduce the performance impact of a bitfield. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1724 | unsigned NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1725 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1726 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1727 | class TemplateSpecializationTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1728 | friend class TemplateSpecializationType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1729 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1730 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1731 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1732 | /// Whether this template specialization type is a substituted type alias. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1733 | unsigned TypeAlias : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1734 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1735 | /// The number of template arguments named in this class template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1736 | /// specialization, which is expected to be able to hold at least 1024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1737 | /// according to [implimits]. However, as this limit is somewhat easy to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1738 | /// hit with template metaprogramming we'd prefer to keep it as large | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1739 | /// as possible. At the moment it has been left as a non-bitfield since | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1740 | /// this type safely fits in 64 bits as an unsigned, so there is no reason | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1741 | /// to introduce the performance impact of a bitfield. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1742 | unsigned NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1743 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1744 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1745 | class DependentTemplateSpecializationTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1746 | friend class DependentTemplateSpecializationType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1747 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1748 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1749 | unsigned : NumTypeWithKeywordBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1750 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1751 | /// The number of template arguments named in this class template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1752 | /// specialization, which is expected to be able to hold at least 1024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1753 | /// according to [implimits]. However, as this limit is somewhat easy to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1754 | /// hit with template metaprogramming we'd prefer to keep it as large | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1755 | /// as possible. At the moment it has been left as a non-bitfield since | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1756 | /// this type safely fits in 64 bits as an unsigned, so there is no reason | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1757 | /// to introduce the performance impact of a bitfield. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1758 | unsigned NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1759 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1760 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1761 | class PackExpansionTypeBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1762 | friend class PackExpansionType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1763 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1764 | unsigned : NumTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1765 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1766 | /// The number of expansions that this pack expansion will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1767 | /// generate when substituted (+1), which is expected to be able to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1768 | /// hold at least 1024 according to [implimits]. However, as this limit | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1769 | /// is somewhat easy to hit with template metaprogramming we'd prefer to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1770 | /// keep it as large as possible. At the moment it has been left as a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1771 | /// non-bitfield since this type safely fits in 64 bits as an unsigned, so | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1772 | /// there is no reason to introduce the performance impact of a bitfield. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1773 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1774 | /// This field will only have a non-zero value when some of the parameter | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1775 | /// packs that occur within the pattern have been substituted but others | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1776 | /// have not. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1777 | unsigned NumExpansions; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1778 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1779 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1780 | union { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1781 | TypeBitfields TypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1782 | ArrayTypeBitfields ArrayTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1783 | ConstantArrayTypeBitfields ConstantArrayTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1784 | AttributedTypeBitfields AttributedTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1785 | AutoTypeBitfields AutoTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1786 | BuiltinTypeBitfields BuiltinTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1787 | FunctionTypeBitfields FunctionTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1788 | ObjCObjectTypeBitfields ObjCObjectTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1789 | ReferenceTypeBitfields ReferenceTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1790 | TypeWithKeywordBitfields TypeWithKeywordBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1791 | ElaboratedTypeBitfields ElaboratedTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1792 | VectorTypeBitfields VectorTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1793 | SubstTemplateTypeParmPackTypeBitfields SubstTemplateTypeParmPackTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1794 | TemplateSpecializationTypeBitfields TemplateSpecializationTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1795 | DependentTemplateSpecializationTypeBitfields | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1796 | DependentTemplateSpecializationTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1797 | PackExpansionTypeBitfields PackExpansionTypeBits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1798 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1799 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1800 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1801 | template <class T> friend class TypePropertyCache; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1802 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1803 | /// Set whether this type comes from an AST file. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1804 | void setFromAST(bool V = true) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1805 | TypeBits.FromAST = V; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1806 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1807 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1808 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1809 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1810 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1811 | Type(TypeClass tc, QualType canon, TypeDependence Dependence) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1812 | : ExtQualsTypeCommonBase(this, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1813 | canon.isNull() ? QualType(this_(), 0) : canon) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1814 | static_assert(sizeof(*this) <= 8 + sizeof(ExtQualsTypeCommonBase), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1815 | "changing bitfields changed sizeof(Type)!"); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1816 | static_assert(alignof(decltype(*this)) % sizeof(void *) == 0, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1817 | "Insufficient alignment!"); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1818 | TypeBits.TC = tc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1819 | TypeBits.Dependence = static_cast<unsigned>(Dependence); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1820 | TypeBits.CacheValid = false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1821 | TypeBits.CachedLocalOrUnnamed = false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1822 | TypeBits.CachedLinkage = NoLinkage; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1823 | TypeBits.FromAST = false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1824 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1825 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1826 | // silence VC++ warning C4355: 'this' : used in base member initializer list | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1827 | Type *this_() { return this; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1828 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1829 | void setDependence(TypeDependence D) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1830 | TypeBits.Dependence = static_cast<unsigned>(D); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1831 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1832 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1833 | void addDependence(TypeDependence D) { setDependence(getDependence() | D); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1834 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1835 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1836 | friend class ASTReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1837 | friend class ASTWriter; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1838 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1839 | template <class T> friend class serialization::AbstractTypeWriter; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1840 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1841 | Type(const Type &) = delete; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1842 | Type(Type &&) = delete; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1843 | Type &operator=(const Type &) = delete; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1844 | Type &operator=(Type &&) = delete; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1845 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1846 | TypeClass getTypeClass() const { return static_cast<TypeClass>(TypeBits.TC); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1847 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1848 | /// Whether this type comes from an AST file. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1849 | bool isFromAST() const { return TypeBits.FromAST; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1850 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1851 | /// Whether this type is or contains an unexpanded parameter | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1852 | /// pack, used to support C++0x variadic templates. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1853 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1854 | /// A type that contains a parameter pack shall be expanded by the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1855 | /// ellipsis operator at some point. For example, the typedef in the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1856 | /// following example contains an unexpanded parameter pack 'T': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1857 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1858 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1859 | /// template<typename ...T> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1860 | /// struct X { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1861 | /// typedef T* pointer_types; // ill-formed; T is a parameter pack. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1862 | /// }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1863 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1864 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1865 | /// Note that this routine does not specify which | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1866 | bool containsUnexpandedParameterPack() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1867 | return getDependence() & TypeDependence::UnexpandedPack; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1868 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1869 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1870 | /// Determines if this type would be canonical if it had no further | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1871 | /// qualification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1872 | bool isCanonicalUnqualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1873 | return CanonicalType == QualType(this, 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1874 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1875 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1876 | /// Pull a single level of sugar off of this locally-unqualified type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1877 | /// Users should generally prefer SplitQualType::getSingleStepDesugaredType() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1878 | /// or QualType::getSingleStepDesugaredType(const ASTContext&). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1879 | QualType getLocallyUnqualifiedSingleStepDesugaredType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1880 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1881 | /// As an extension, we classify types as one of "sized" or "sizeless"; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1882 | /// every type is one or the other. Standard types are all sized; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1883 | /// sizeless types are purely an extension. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1884 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1885 | /// Sizeless types contain data with no specified size, alignment, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1886 | /// or layout. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1887 | bool isSizelessType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1888 | bool isSizelessBuiltinType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1889 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1890 | /// Determines if this is a sizeless type supported by the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1891 | /// 'arm_sve_vector_bits' type attribute, which can be applied to a single | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1892 | /// SVE vector or predicate, excluding tuple types such as svint32x4_t. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1893 | bool isVLSTBuiltinType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1894 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1895 | /// Returns the representative type for the element of an SVE builtin type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1896 | /// This is used to represent fixed-length SVE vectors created with the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1897 | /// 'arm_sve_vector_bits' type attribute as VectorType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1898 | QualType getSveEltType(const ASTContext &Ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1899 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1900 | /// Types are partitioned into 3 broad categories (C99 6.2.5p1): | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1901 | /// object types, function types, and incomplete types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1902 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1903 | /// Return true if this is an incomplete type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1904 | /// A type that can describe objects, but which lacks information needed to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1905 | /// determine its size (e.g. void, or a fwd declared struct). Clients of this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1906 | /// routine will need to determine if the size is actually required. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1907 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1908 | /// Def If non-null, and the type refers to some kind of declaration | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1909 | /// that can be completed (such as a C struct, C++ class, or Objective-C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1910 | /// class), will be set to the declaration. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1911 | bool isIncompleteType(NamedDecl **Def = nullptr) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1912 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1913 | /// Return true if this is an incomplete or object | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1914 | /// type, in other words, not a function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1915 | bool isIncompleteOrObjectType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1916 | return !isFunctionType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1917 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1918 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1919 | /// Determine whether this type is an object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1920 | bool isObjectType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1921 | // C++ [basic.types]p8: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1922 | // An object type is a (possibly cv-qualified) type that is not a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1923 | // function type, not a reference type, and not a void type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1924 | return !isReferenceType() && !isFunctionType() && !isVoidType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1925 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1926 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1927 | /// Return true if this is a literal type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1928 | /// (C++11 [basic.types]p10) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1929 | bool isLiteralType(const ASTContext &Ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1930 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1931 | /// Determine if this type is a structural type, per C++20 [temp.param]p7. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1932 | bool isStructuralType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1933 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1934 | /// Test if this type is a standard-layout type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1935 | /// (C++0x [basic.type]p9) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1936 | bool isStandardLayoutType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1937 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1938 | /// Helper methods to distinguish type categories. All type predicates | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1939 | /// operate on the canonical type, ignoring typedefs and qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1940 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1941 | /// Returns true if the type is a builtin type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1942 | bool isBuiltinType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1943 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1944 | /// Test for a particular builtin type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1945 | bool isSpecificBuiltinType(unsigned K) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1946 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1947 | /// Test for a type which does not represent an actual type-system type but | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1948 | /// is instead used as a placeholder for various convenient purposes within | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1949 | /// Clang. All such types are BuiltinTypes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1950 | bool isPlaceholderType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1951 | const BuiltinType *getAsPlaceholderType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1952 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1953 | /// Test for a specific placeholder type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1954 | bool isSpecificPlaceholderType(unsigned K) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1955 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1956 | /// Test for a placeholder type other than Overload; see | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1957 | /// BuiltinType::isNonOverloadPlaceholderType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1958 | bool isNonOverloadPlaceholderType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1959 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1960 | /// isIntegerType() does *not* include complex integers (a GCC extension). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1961 | /// isComplexIntegerType() can be used to test for complex integers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1962 | bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1963 | bool isEnumeralType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1964 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1965 | /// Determine whether this type is a scoped enumeration type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1966 | bool isScopedEnumeralType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1967 | bool isBooleanType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1968 | bool isCharType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1969 | bool isWideCharType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1970 | bool isChar8Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1971 | bool isChar16Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1972 | bool isChar32Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1973 | bool isAnyCharacterType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1974 | bool isIntegralType(const ASTContext &Ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1975 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1976 | /// Determine whether this type is an integral or enumeration type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1977 | bool isIntegralOrEnumerationType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1978 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1979 | /// Determine whether this type is an integral or unscoped enumeration type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1980 | bool isIntegralOrUnscopedEnumerationType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1981 | bool isUnscopedEnumerationType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1982 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1983 | /// Floating point categories. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1984 | bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1985 | /// isComplexType() does *not* include complex integers (a GCC extension). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1986 | /// isComplexIntegerType() can be used to test for complex integers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1987 | bool isComplexType() const; // C99 6.2.5p11 (complex) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1988 | bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1989 | bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1990 | bool isHalfType() const; // OpenCL 6.1.1.1, NEON (IEEE 754-2008 half) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1991 | bool isFloat16Type() const; // C11 extension ISO/IEC TS 18661 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1992 | bool isBFloat16Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1993 | bool isFloat128Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1994 | bool isRealType() const; // C99 6.2.5p17 (real floating + integer) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1995 | bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1996 | bool isVoidType() const; // C99 6.2.5p19 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1997 | bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1998 | bool isAggregateType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1999 | bool isFundamentalType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2000 | bool isCompoundType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2002 | // Type Predicates: Check to see if this type is structurally the specified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2003 | // type, ignoring typedefs and qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2004 | bool isFunctionType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2005 | bool isFunctionNoProtoType() const { return getAs<FunctionNoProtoType>(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2006 | bool isFunctionProtoType() const { return getAs<FunctionProtoType>(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2007 | bool isPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2008 | bool isAnyPointerType() const; // Any C pointer or ObjC object pointer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2009 | bool isBlockPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2010 | bool isVoidPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2011 | bool isReferenceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2012 | bool isLValueReferenceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2013 | bool isRValueReferenceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2014 | bool isObjectPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2015 | bool isFunctionPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2016 | bool isFunctionReferenceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2017 | bool isMemberPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2018 | bool isMemberFunctionPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2019 | bool isMemberDataPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2020 | bool isArrayType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2021 | bool isConstantArrayType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2022 | bool isIncompleteArrayType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2023 | bool isVariableArrayType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2024 | bool isDependentSizedArrayType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2025 | bool isRecordType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2026 | bool isClassType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2027 | bool isStructureType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2028 | bool isObjCBoxableRecordType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2029 | bool isInterfaceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2030 | bool isStructureOrClassType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2031 | bool isUnionType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2032 | bool isComplexIntegerType() const; // GCC _Complex integer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2033 | bool isVectorType() const; // GCC vector type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2034 | bool isExtVectorType() const; // Extended vector type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2035 | bool isMatrixType() const; // Matrix type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2036 | bool isConstantMatrixType() const; // Constant matrix type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2037 | bool isDependentAddressSpaceType() const; // value-dependent address space qualifier | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2038 | bool isObjCObjectPointerType() const; // pointer to ObjC object | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2039 | bool isObjCRetainableType() const; // ObjC object or block pointer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2040 | bool isObjCLifetimeType() const; // (array of)* retainable type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2041 | bool isObjCIndirectLifetimeType() const; // (pointer to)* lifetime type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2042 | bool isObjCNSObjectType() const; // __attribute__((NSObject)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2043 | bool isObjCIndependentClassType() const; // __attribute__((objc_independent_class)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2044 | // FIXME: change this to 'raw' interface type, so we can used 'interface' type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2045 | // for the common case. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2046 | bool isObjCObjectType() const; // NSString or typeof(*(id)0) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2047 | bool isObjCQualifiedInterfaceType() const; // NSString<foo> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2048 | bool isObjCQualifiedIdType() const; // id<foo> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2049 | bool isObjCQualifiedClassType() const; // Class<foo> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2050 | bool isObjCObjectOrInterfaceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2051 | bool isObjCIdType() const; // id | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2052 | bool isDecltypeType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2053 | /// Was this type written with the special inert-in-ARC __unsafe_unretained | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2054 | /// qualifier? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2055 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2056 | /// This approximates the answer to the following question: if this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2057 | /// translation unit were compiled in ARC, would this type be qualified | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2058 | /// with __unsafe_unretained? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2059 | bool isObjCInertUnsafeUnretainedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2060 | return hasAttr(attr::ObjCInertUnsafeUnretained); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2061 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2062 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2063 | /// Whether the type is Objective-C 'id' or a __kindof type of an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2064 | /// object type, e.g., __kindof NSView * or __kindof id | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2065 | /// <NSCopying>. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2066 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2067 | /// \param bound Will be set to the bound on non-id subtype types, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2068 | /// which will be (possibly specialized) Objective-C class type, or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2069 | /// null for 'id. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2070 | bool isObjCIdOrObjectKindOfType(const ASTContext &ctx, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2071 | const ObjCObjectType *&bound) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2072 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2073 | bool isObjCClassType() const; // Class | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2074 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2075 | /// Whether the type is Objective-C 'Class' or a __kindof type of an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2076 | /// Class type, e.g., __kindof Class <NSCopying>. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2077 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2078 | /// Unlike \c isObjCIdOrObjectKindOfType, there is no relevant bound | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2079 | /// here because Objective-C's type system cannot express "a class | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2080 | /// object for a subclass of NSFoo". | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2081 | bool isObjCClassOrClassKindOfType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2082 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2083 | bool isBlockCompatibleObjCPointerType(ASTContext &ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2084 | bool isObjCSelType() const; // Class | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2085 | bool isObjCBuiltinType() const; // 'id' or 'Class' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2086 | bool isObjCARCBridgableType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2087 | bool isCARCBridgableType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2088 | bool isTemplateTypeParmType() const; // C++ template type parameter | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2089 | bool isNullPtrType() const; // C++11 std::nullptr_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2090 | bool isNothrowT() const; // C++ std::nothrow_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2091 | bool isAlignValT() const; // C++17 std::align_val_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2092 | bool isStdByteType() const; // C++17 std::byte | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2093 | bool isAtomicType() const; // C11 _Atomic() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2094 | bool isUndeducedAutoType() const; // C++11 auto or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2095 | // C++14 decltype(auto) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2096 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2097 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2098 | bool is##Id##Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2099 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2100 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2101 | bool isImageType() const; // Any OpenCL image type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2102 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2103 | bool isSamplerT() const; // OpenCL sampler_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2104 | bool isEventT() const; // OpenCL event_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2105 | bool isClkEventT() const; // OpenCL clk_event_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2106 | bool isQueueT() const; // OpenCL queue_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2107 | bool isReserveIDT() const; // OpenCL reserve_id_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2108 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2109 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2110 | bool is##Id##Type() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2111 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2112 | // Type defined in cl_intel_device_side_avc_motion_estimation OpenCL extension | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2113 | bool isOCLIntelSubgroupAVCType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2114 | bool isOCLExtOpaqueType() const; // Any OpenCL extension type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2115 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2116 | bool isPipeType() const; // OpenCL pipe type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2117 | bool isExtIntType() const; // Extended Int Type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2118 | bool isOpenCLSpecificType() const; // Any OpenCL specific type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2119 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2120 | /// Determines if this type, which must satisfy | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2121 | /// isObjCLifetimeType(), is implicitly __unsafe_unretained rather | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2122 | /// than implicitly __strong. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2123 | bool isObjCARCImplicitlyUnretainedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2124 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2125 | /// Check if the type is the CUDA device builtin surface type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2126 | bool isCUDADeviceBuiltinSurfaceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2127 | /// Check if the type is the CUDA device builtin texture type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2128 | bool isCUDADeviceBuiltinTextureType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2129 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2130 | /// Return the implicit lifetime for this type, which must not be dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2131 | Qualifiers::ObjCLifetime getObjCARCImplicitLifetime() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2132 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2133 | enum ScalarTypeKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2134 | STK_CPointer, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2135 | STK_BlockPointer, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2136 | STK_ObjCObjectPointer, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2137 | STK_MemberPointer, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2138 | STK_Bool, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2139 | STK_Integral, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2140 | STK_Floating, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2141 | STK_IntegralComplex, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2142 | STK_FloatingComplex, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2143 | STK_FixedPoint | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2144 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2145 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2146 | /// Given that this is a scalar type, classify it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2147 | ScalarTypeKind getScalarTypeKind() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2148 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2149 | TypeDependence getDependence() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2150 | return static_cast<TypeDependence>(TypeBits.Dependence); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2151 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2152 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2153 | /// Whether this type is an error type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2154 | bool containsErrors() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2155 | return getDependence() & TypeDependence::Error; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2156 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2157 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2158 | /// Whether this type is a dependent type, meaning that its definition | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2159 | /// somehow depends on a template parameter (C++ [temp.dep.type]). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2160 | bool isDependentType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2161 | return getDependence() & TypeDependence::Dependent; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2162 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2163 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2164 | /// Determine whether this type is an instantiation-dependent type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2165 | /// meaning that the type involves a template parameter (even if the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2166 | /// definition does not actually depend on the type substituted for that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2167 | /// template parameter). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2168 | bool isInstantiationDependentType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2169 | return getDependence() & TypeDependence::Instantiation; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2170 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2171 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2172 | /// Determine whether this type is an undeduced type, meaning that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2173 | /// it somehow involves a C++11 'auto' type or similar which has not yet been | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2174 | /// deduced. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2175 | bool isUndeducedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2176 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2177 | /// Whether this type is a variably-modified type (C99 6.7.5). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2178 | bool isVariablyModifiedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2179 | return getDependence() & TypeDependence::VariablyModified; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2180 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2181 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2182 | /// Whether this type involves a variable-length array type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2183 | /// with a definite size. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2184 | bool hasSizedVLAType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2185 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2186 | /// Whether this type is or contains a local or unnamed type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2187 | bool hasUnnamedOrLocalType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2188 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2189 | bool isOverloadableType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2190 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2191 | /// Determine wither this type is a C++ elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2192 | bool isElaboratedTypeSpecifier() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2193 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2194 | bool canDecayToPointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2195 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2196 | /// Whether this type is represented natively as a pointer. This includes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2197 | /// pointers, references, block pointers, and Objective-C interface, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2198 | /// qualified id, and qualified interface types, as well as nullptr_t. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2199 | bool hasPointerRepresentation() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2200 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2201 | /// Whether this type can represent an objective pointer type for the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2202 | /// purpose of GC'ability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2203 | bool hasObjCPointerRepresentation() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2204 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2205 | /// Determine whether this type has an integer representation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2206 | /// of some sort, e.g., it is an integer type or a vector. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2207 | bool hasIntegerRepresentation() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2208 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2209 | /// Determine whether this type has an signed integer representation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2210 | /// of some sort, e.g., it is an signed integer type or a vector. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2211 | bool hasSignedIntegerRepresentation() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2212 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2213 | /// Determine whether this type has an unsigned integer representation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2214 | /// of some sort, e.g., it is an unsigned integer type or a vector. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2215 | bool hasUnsignedIntegerRepresentation() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2216 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2217 | /// Determine whether this type has a floating-point representation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2218 | /// of some sort, e.g., it is a floating-point type or a vector thereof. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2219 | bool hasFloatingRepresentation() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2220 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2221 | // Type Checking Functions: Check to see if this type is structurally the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2222 | // specified type, ignoring typedefs and qualifiers, and return a pointer to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2223 | // the best type we can. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2224 | const RecordType *getAsStructureType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2225 | /// NOTE: getAs*ArrayType are methods on ASTContext. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2226 | const RecordType *getAsUnionType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2227 | const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2228 | const ObjCObjectType *getAsObjCInterfaceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2229 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2230 | // The following is a convenience method that returns an ObjCObjectPointerType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2231 | // for object declared using an interface. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2232 | const ObjCObjectPointerType *getAsObjCInterfacePointerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2233 | const ObjCObjectPointerType *getAsObjCQualifiedIdType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2234 | const ObjCObjectPointerType *getAsObjCQualifiedClassType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2235 | const ObjCObjectType *getAsObjCQualifiedInterfaceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2236 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2237 | /// Retrieves the CXXRecordDecl that this type refers to, either | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2238 | /// because the type is a RecordType or because it is the injected-class-name | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2239 | /// type of a class template or class template partial specialization. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2240 | CXXRecordDecl *getAsCXXRecordDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2241 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2242 | /// Retrieves the RecordDecl this type refers to. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2243 | RecordDecl *getAsRecordDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2244 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2245 | /// Retrieves the TagDecl that this type refers to, either | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2246 | /// because the type is a TagType or because it is the injected-class-name | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2247 | /// type of a class template or class template partial specialization. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2248 | TagDecl *getAsTagDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2249 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2250 | /// If this is a pointer or reference to a RecordType, return the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2251 | /// CXXRecordDecl that the type refers to. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2252 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2253 | /// If this is not a pointer or reference, or the type being pointed to does | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2254 | /// not refer to a CXXRecordDecl, returns NULL. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2255 | const CXXRecordDecl *getPointeeCXXRecordDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2256 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2257 | /// Get the DeducedType whose type will be deduced for a variable with | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2258 | /// an initializer of this type. This looks through declarators like pointer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2259 | /// types, but not through decltype or typedefs. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2260 | DeducedType *getContainedDeducedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2261 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2262 | /// Get the AutoType whose type will be deduced for a variable with | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2263 | /// an initializer of this type. This looks through declarators like pointer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2264 | /// types, but not through decltype or typedefs. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2265 | AutoType *getContainedAutoType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2266 | return dyn_cast_or_null<AutoType>(getContainedDeducedType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2267 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2268 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2269 | /// Determine whether this type was written with a leading 'auto' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2270 | /// corresponding to a trailing return type (possibly for a nested | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2271 | /// function type within a pointer to function type or similar). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2272 | bool hasAutoForTrailingReturnType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2273 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2274 | /// Member-template getAs<specific type>'. Look through sugar for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2275 | /// an instance of \<specific type>. This scheme will eventually | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2276 | /// replace the specific getAsXXXX methods above. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2277 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2278 | /// There are some specializations of this member template listed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2279 | /// immediately following this class. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2280 | template <typename T> const T *getAs() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2281 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2282 | /// Member-template getAsAdjusted<specific type>. Look through specific kinds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2283 | /// of sugar (parens, attributes, etc) for an instance of \<specific type>. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2284 | /// This is used when you need to walk over sugar nodes that represent some | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2285 | /// kind of type adjustment from a type that was written as a \<specific type> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2286 | /// to another type that is still canonically a \<specific type>. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2287 | template <typename T> const T *getAsAdjusted() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2288 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2289 | /// A variant of getAs<> for array types which silently discards | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2290 | /// qualifiers from the outermost type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2291 | const ArrayType *getAsArrayTypeUnsafe() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2292 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2293 | /// Member-template castAs<specific type>. Look through sugar for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2294 | /// the underlying instance of \<specific type>. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2295 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2296 | /// This method has the same relationship to getAs<T> as cast<T> has | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2297 | /// to dyn_cast<T>; which is to say, the underlying type *must* | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2298 | /// have the intended type, and this method will never return null. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2299 | template <typename T> const T *castAs() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2300 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2301 | /// A variant of castAs<> for array type which silently discards | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2302 | /// qualifiers from the outermost type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2303 | const ArrayType *castAsArrayTypeUnsafe() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2304 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2305 | /// Determine whether this type had the specified attribute applied to it | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2306 | /// (looking through top-level type sugar). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2307 | bool hasAttr(attr::Kind AK) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2308 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2309 | /// Get the base element type of this type, potentially discarding type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2310 | /// qualifiers. This should never be used when type qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2311 | /// are meaningful. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2312 | const Type *getBaseElementTypeUnsafe() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2313 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2314 | /// If this is an array type, return the element type of the array, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2315 | /// potentially with type qualifiers missing. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2316 | /// This should never be used when type qualifiers are meaningful. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2317 | const Type *getArrayElementTypeNoTypeQual() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2318 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2319 | /// If this is a pointer type, return the pointee type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2320 | /// If this is an array type, return the array element type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2321 | /// This should never be used when type qualifiers are meaningful. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2322 | const Type *getPointeeOrArrayElementType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2323 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2324 | /// If this is a pointer, ObjC object pointer, or block | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2325 | /// pointer, this returns the respective pointee. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2326 | QualType getPointeeType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2327 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2328 | /// Return the specified type with any "sugar" removed from the type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2329 | /// removing any typedefs, typeofs, etc., as well as any qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2330 | const Type *getUnqualifiedDesugaredType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2331 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2332 | /// More type predicates useful for type checking/promotion | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2333 | bool isPromotableIntegerType() const; // C99 6.3.1.1p2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2334 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2335 | /// Return true if this is an integer type that is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2336 | /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2337 | /// or an enum decl which has a signed representation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2338 | bool isSignedIntegerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2339 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2340 | /// Return true if this is an integer type that is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2341 | /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2342 | /// or an enum decl which has an unsigned representation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2343 | bool isUnsignedIntegerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2344 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2345 | /// Determines whether this is an integer type that is signed or an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2346 | /// enumeration types whose underlying type is a signed integer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2347 | bool isSignedIntegerOrEnumerationType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2348 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2349 | /// Determines whether this is an integer type that is unsigned or an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2350 | /// enumeration types whose underlying type is a unsigned integer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2351 | bool isUnsignedIntegerOrEnumerationType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2352 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2353 | /// Return true if this is a fixed point type according to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2354 | /// ISO/IEC JTC1 SC22 WG14 N1169. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2355 | bool isFixedPointType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2356 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2357 | /// Return true if this is a fixed point or integer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2358 | bool isFixedPointOrIntegerType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2359 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2360 | /// Return true if this is a saturated fixed point type according to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2361 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2362 | bool isSaturatedFixedPointType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2363 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2364 | /// Return true if this is a saturated fixed point type according to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2365 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2366 | bool isUnsaturatedFixedPointType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2367 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2368 | /// Return true if this is a fixed point type that is signed according | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2369 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2370 | bool isSignedFixedPointType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2371 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2372 | /// Return true if this is a fixed point type that is unsigned according | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2373 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2374 | bool isUnsignedFixedPointType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2375 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2376 | /// Return true if this is not a variable sized type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2377 | /// according to the rules of C99 6.7.5p3. It is not legal to call this on | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2378 | /// incomplete types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2379 | bool isConstantSizeType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2380 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2381 | /// Returns true if this type can be represented by some | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2382 | /// set of type specifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2383 | bool isSpecifierType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2384 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2385 | /// Determine the linkage of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2386 | Linkage getLinkage() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2387 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2388 | /// Determine the visibility of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2389 | Visibility getVisibility() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2390 | return getLinkageAndVisibility().getVisibility(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2391 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2392 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2393 | /// Return true if the visibility was explicitly set is the code. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2394 | bool isVisibilityExplicit() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2395 | return getLinkageAndVisibility().isVisibilityExplicit(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2396 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2397 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2398 | /// Determine the linkage and visibility of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2399 | LinkageInfo getLinkageAndVisibility() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2400 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2401 | /// True if the computed linkage is valid. Used for consistency | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2402 | /// checking. Should always return true. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2403 | bool isLinkageValid() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2404 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2405 | /// Determine the nullability of the given type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2406 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2407 | /// Note that nullability is only captured as sugar within the type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2408 | /// system, not as part of the canonical type, so nullability will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2409 | /// be lost by canonicalization and desugaring. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2410 | Optional<NullabilityKind> getNullability(const ASTContext &context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2411 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2412 | /// Determine whether the given type can have a nullability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2413 | /// specifier applied to it, i.e., if it is any kind of pointer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2414 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2415 | /// \param ResultIfUnknown The value to return if we don't yet know whether | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2416 | /// this type can have nullability because it is dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2417 | bool canHaveNullability(bool ResultIfUnknown = true) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2418 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2419 | /// Retrieve the set of substitutions required when accessing a member | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2420 | /// of the Objective-C receiver type that is declared in the given context. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2421 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2422 | /// \c *this is the type of the object we're operating on, e.g., the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2423 | /// receiver for a message send or the base of a property access, and is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2424 | /// expected to be of some object or object pointer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2425 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2426 | /// \param dc The declaration context for which we are building up a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2427 | /// substitution mapping, which should be an Objective-C class, extension, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2428 | /// category, or method within. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2429 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2430 | /// \returns an array of type arguments that can be substituted for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2431 | /// the type parameters of the given declaration context in any type described | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2432 | /// within that context, or an empty optional to indicate that no | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2433 | /// substitution is required. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2434 | Optional<ArrayRef<QualType>> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2435 | getObjCSubstitutions(const DeclContext *dc) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2436 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2437 | /// Determines if this is an ObjC interface type that may accept type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2438 | /// parameters. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2439 | bool acceptsObjCTypeParams() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2440 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2441 | const char *getTypeClassName() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2442 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2443 | QualType getCanonicalTypeInternal() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2444 | return CanonicalType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2445 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2446 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2447 | CanQualType getCanonicalTypeUnqualified() const; // in CanonicalType.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2448 | void dump() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2449 | void dump(llvm::raw_ostream &OS, const ASTContext &Context) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2450 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2451 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2452 | /// This will check for a TypedefType by removing any existing sugar | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2453 | /// until it reaches a TypedefType or a non-sugared type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2454 | template <> const TypedefType *Type::getAs() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2455 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2456 | /// This will check for a TemplateSpecializationType by removing any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2457 | /// existing sugar until it reaches a TemplateSpecializationType or a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2458 | /// non-sugared type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2459 | template <> const TemplateSpecializationType *Type::getAs() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2460 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2461 | /// This will check for an AttributedType by removing any existing sugar | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2462 | /// until it reaches an AttributedType or a non-sugared type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2463 | template <> const AttributedType *Type::getAs() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2464 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2465 | // We can do canonical leaf types faster, because we don't have to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2466 | // worry about preserving child type decoration. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2467 | #define TYPE(Class, Base) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2468 | #define LEAF_TYPE(Class) \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2469 | template <> inline const Class##Type *Type::getAs() const { \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2470 | return dyn_cast<Class##Type>(CanonicalType); \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2471 | } \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2472 | template <> inline const Class##Type *Type::castAs() const { \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2473 | return cast<Class##Type>(CanonicalType); \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2474 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2475 | #include "clang/AST/TypeNodes.inc" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2476 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2477 | /// This class is used for builtin types like 'int'. Builtin | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2478 | /// types are always canonical and have a literal name field. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2479 | class BuiltinType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2480 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2481 | enum Kind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2482 | // OpenCL image types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2483 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) Id, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2484 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2485 | // OpenCL extension types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2486 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) Id, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2487 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2488 | // SVE Types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2489 | #define SVE_TYPE(Name, Id, SingletonId) Id, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2490 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2491 | // PPC MMA Types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2492 | #define PPC_MMA_VECTOR_TYPE(Name, Id, Size) Id, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2493 | #include "clang/Basic/PPCTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2494 | // All other builtin types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2495 | #define BUILTIN_TYPE(Id, SingletonId) Id, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2496 | #define LAST_BUILTIN_TYPE(Id) LastKind = Id | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2497 | #include "clang/AST/BuiltinTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2498 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2499 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2500 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2501 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2502 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2503 | BuiltinType(Kind K) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2504 | : Type(Builtin, QualType(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2505 | K == Dependent ? TypeDependence::DependentInstantiation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2506 | : TypeDependence::None) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2507 | BuiltinTypeBits.Kind = K; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2508 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2509 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2510 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2511 | Kind getKind() const { return static_cast<Kind>(BuiltinTypeBits.Kind); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2512 | StringRef getName(const PrintingPolicy &Policy) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2513 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2514 | const char *getNameAsCString(const PrintingPolicy &Policy) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2515 | // The StringRef is null-terminated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2516 | StringRef str = getName(Policy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2517 | assert(!str.empty() && str.data()[str.size()] == '\0')((!str.empty() && str.data()[str.size()] == '\0') ? static_cast <void> (0) : __assert_fail ("!str.empty() && str.data()[str.size()] == '\\0'" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 2517, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2518 | return str.data(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2519 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2520 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2521 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2522 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2523 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2524 | bool isInteger() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2525 | return getKind() >= Bool && getKind() <= Int128; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2526 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2527 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2528 | bool isSignedInteger() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2529 | return getKind() >= Char_S && getKind() <= Int128; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2530 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2531 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2532 | bool isUnsignedInteger() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2533 | return getKind() >= Bool && getKind() <= UInt128; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2534 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2535 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2536 | bool isFloatingPoint() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2537 | return getKind() >= Half && getKind() <= Float128; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2538 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2539 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2540 | /// Determines whether the given kind corresponds to a placeholder type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2541 | static bool isPlaceholderTypeKind(Kind K) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2542 | return K >= Overload; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2543 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2544 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2545 | /// Determines whether this type is a placeholder type, i.e. a type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2546 | /// which cannot appear in arbitrary positions in a fully-formed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2547 | /// expression. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2548 | bool isPlaceholderType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2549 | return isPlaceholderTypeKind(getKind()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2550 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2551 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2552 | /// Determines whether this type is a placeholder type other than | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2553 | /// Overload. Most placeholder types require only syntactic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2554 | /// information about their context in order to be resolved (e.g. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2555 | /// whether it is a call expression), which means they can (and | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2556 | /// should) be resolved in an earlier "phase" of analysis. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2557 | /// Overload expressions sometimes pick up further information | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2558 | /// from their context, like whether the context expects a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2559 | /// specific function-pointer type, and so frequently need | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2560 | /// special treatment. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2561 | bool isNonOverloadPlaceholderType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2562 | return getKind() > Overload; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2563 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2564 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2565 | static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2566 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2567 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2568 | /// Complex values, per C99 6.2.5p11. This supports the C99 complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2569 | /// types (_Complex float etc) as well as the GCC integer complex extensions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2570 | class ComplexType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2571 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2572 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2573 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2574 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2575 | ComplexType(QualType Element, QualType CanonicalPtr) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2576 | : Type(Complex, CanonicalPtr, Element->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2577 | ElementType(Element) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2578 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2579 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2580 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2581 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2582 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2583 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2584 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2585 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2586 | Profile(ID, getElementType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2587 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2588 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2589 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2590 | ID.AddPointer(Element.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2591 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2592 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2593 | static bool classof(const Type *T) { return T->getTypeClass() == Complex; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2594 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2595 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2596 | /// Sugar for parentheses used when specifying types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2597 | class ParenType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2598 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2599 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2600 | QualType Inner; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2601 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2602 | ParenType(QualType InnerType, QualType CanonType) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2603 | : Type(Paren, CanonType, InnerType->getDependence()), Inner(InnerType) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2604 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2605 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2606 | QualType getInnerType() const { return Inner; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2607 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2608 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2609 | QualType desugar() const { return getInnerType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2610 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2611 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2612 | Profile(ID, getInnerType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2613 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2614 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2615 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Inner) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2616 | Inner.Profile(ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2617 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2618 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2619 | static bool classof(const Type *T) { return T->getTypeClass() == Paren; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2620 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2621 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2622 | /// PointerType - C99 6.7.5.1 - Pointer Declarators. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2623 | class PointerType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2624 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2625 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2626 | QualType PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2627 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2628 | PointerType(QualType Pointee, QualType CanonicalPtr) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2629 | : Type(Pointer, CanonicalPtr, Pointee->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2630 | PointeeType(Pointee) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2631 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2632 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2633 | QualType getPointeeType() const { return PointeeType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2634 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2635 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2636 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2637 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2638 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2639 | Profile(ID, getPointeeType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2640 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2641 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2642 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2643 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2644 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2645 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2646 | static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2647 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2648 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2649 | /// Represents a type which was implicitly adjusted by the semantic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2650 | /// engine for arbitrary reasons. For example, array and function types can | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2651 | /// decay, and function types can have their calling conventions adjusted. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2652 | class AdjustedType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2653 | QualType OriginalTy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2654 | QualType AdjustedTy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2655 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2656 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2657 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2658 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2659 | AdjustedType(TypeClass TC, QualType OriginalTy, QualType AdjustedTy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2660 | QualType CanonicalPtr) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2661 | : Type(TC, CanonicalPtr, OriginalTy->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2662 | OriginalTy(OriginalTy), AdjustedTy(AdjustedTy) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2663 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2664 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2665 | QualType getOriginalType() const { return OriginalTy; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2666 | QualType getAdjustedType() const { return AdjustedTy; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2667 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2668 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2669 | QualType desugar() const { return AdjustedTy; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2670 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2671 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2672 | Profile(ID, OriginalTy, AdjustedTy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2673 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2674 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2675 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Orig, QualType New) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2676 | ID.AddPointer(Orig.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2677 | ID.AddPointer(New.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2678 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2679 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2680 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2681 | return T->getTypeClass() == Adjusted || T->getTypeClass() == Decayed; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2682 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2683 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2684 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2685 | /// Represents a pointer type decayed from an array or function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2686 | class DecayedType : public AdjustedType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2687 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2688 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2689 | inline | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2690 | DecayedType(QualType OriginalType, QualType Decayed, QualType Canonical); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2691 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2692 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2693 | QualType getDecayedType() const { return getAdjustedType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2694 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2695 | inline QualType getPointeeType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2696 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2697 | static bool classof(const Type *T) { return T->getTypeClass() == Decayed; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2698 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2699 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2700 | /// Pointer to a block type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2701 | /// This type is to represent types syntactically represented as | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2702 | /// "void (^)(int)", etc. Pointee is required to always be a function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2703 | class BlockPointerType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2704 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2705 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2706 | // Block is some kind of pointer type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2707 | QualType PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2708 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2709 | BlockPointerType(QualType Pointee, QualType CanonicalCls) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2710 | : Type(BlockPointer, CanonicalCls, Pointee->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2711 | PointeeType(Pointee) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2712 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2713 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2714 | // Get the pointee type. Pointee is required to always be a function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2715 | QualType getPointeeType() const { return PointeeType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2716 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2717 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2718 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2719 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2720 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2721 | Profile(ID, getPointeeType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2722 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2723 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2724 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2725 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2726 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2727 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2728 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2729 | return T->getTypeClass() == BlockPointer; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2730 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2731 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2732 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2733 | /// Base for LValueReferenceType and RValueReferenceType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2734 | class ReferenceType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2735 | QualType PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2736 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2737 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2738 | ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2739 | bool SpelledAsLValue) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2740 | : Type(tc, CanonicalRef, Referencee->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2741 | PointeeType(Referencee) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2742 | ReferenceTypeBits.SpelledAsLValue = SpelledAsLValue; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2743 | ReferenceTypeBits.InnerRef = Referencee->isReferenceType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2744 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2745 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2746 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2747 | bool isSpelledAsLValue() const { return ReferenceTypeBits.SpelledAsLValue; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2748 | bool isInnerRef() const { return ReferenceTypeBits.InnerRef; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2749 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2750 | QualType getPointeeTypeAsWritten() const { return PointeeType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2751 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2752 | QualType getPointeeType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2753 | // FIXME: this might strip inner qualifiers; okay? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2754 | const ReferenceType *T = this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2755 | while (T->isInnerRef()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2756 | T = T->PointeeType->castAs<ReferenceType>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2757 | return T->PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2758 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2759 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2760 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2761 | Profile(ID, PointeeType, isSpelledAsLValue()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2762 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2763 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2764 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2765 | QualType Referencee, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2766 | bool SpelledAsLValue) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2767 | ID.AddPointer(Referencee.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2768 | ID.AddBoolean(SpelledAsLValue); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2769 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2770 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2771 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2772 | return T->getTypeClass() == LValueReference || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2773 | T->getTypeClass() == RValueReference; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2774 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2775 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2776 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2777 | /// An lvalue reference type, per C++11 [dcl.ref]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2778 | class LValueReferenceType : public ReferenceType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2779 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2780 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2781 | LValueReferenceType(QualType Referencee, QualType CanonicalRef, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2782 | bool SpelledAsLValue) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2783 | : ReferenceType(LValueReference, Referencee, CanonicalRef, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2784 | SpelledAsLValue) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2785 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2786 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2787 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2788 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2789 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2790 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2791 | return T->getTypeClass() == LValueReference; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2792 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2793 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2794 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2795 | /// An rvalue reference type, per C++11 [dcl.ref]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2796 | class RValueReferenceType : public ReferenceType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2797 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2798 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2799 | RValueReferenceType(QualType Referencee, QualType CanonicalRef) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2800 | : ReferenceType(RValueReference, Referencee, CanonicalRef, false) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2801 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2802 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2803 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2804 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2805 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2806 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2807 | return T->getTypeClass() == RValueReference; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2808 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2809 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2810 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2811 | /// A pointer to member type per C++ 8.3.3 - Pointers to members. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2812 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2813 | /// This includes both pointers to data members and pointer to member functions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2814 | class MemberPointerType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2815 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2816 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2817 | QualType PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2818 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2819 | /// The class of which the pointee is a member. Must ultimately be a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2820 | /// RecordType, but could be a typedef or a template parameter too. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2821 | const Type *Class; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2822 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2823 | MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2824 | : Type(MemberPointer, CanonicalPtr, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2825 | (Cls->getDependence() & ~TypeDependence::VariablyModified) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2826 | Pointee->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2827 | PointeeType(Pointee), Class(Cls) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2828 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2829 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2830 | QualType getPointeeType() const { return PointeeType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2831 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2832 | /// Returns true if the member type (i.e. the pointee type) is a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2833 | /// function type rather than a data-member type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2834 | bool isMemberFunctionPointer() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2835 | return PointeeType->isFunctionProtoType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2836 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2837 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2838 | /// Returns true if the member type (i.e. the pointee type) is a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2839 | /// data type rather than a function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2840 | bool isMemberDataPointer() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2841 | return !PointeeType->isFunctionProtoType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2842 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2843 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2844 | const Type *getClass() const { return Class; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2845 | CXXRecordDecl *getMostRecentCXXRecordDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2846 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2847 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2848 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2849 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2850 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2851 | Profile(ID, getPointeeType(), getClass()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2852 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2853 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2854 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2855 | const Type *Class) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2856 | ID.AddPointer(Pointee.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2857 | ID.AddPointer(Class); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2858 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2859 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2860 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2861 | return T->getTypeClass() == MemberPointer; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2862 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2863 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2864 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2865 | /// Represents an array type, per C99 6.7.5.2 - Array Declarators. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2866 | class ArrayType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2867 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2868 | /// Capture whether this is a normal array (e.g. int X[4]) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2869 | /// an array with a static size (e.g. int X[static 4]), or an array | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2870 | /// with a star size (e.g. int X[*]). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2871 | /// 'static' is only allowed on function parameters. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2872 | enum ArraySizeModifier { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2873 | Normal, Static, Star | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2874 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2875 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2876 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2877 | /// The element type of the array. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2878 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2879 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2880 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2881 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2882 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2883 | ArrayType(TypeClass tc, QualType et, QualType can, ArraySizeModifier sm, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2884 | unsigned tq, const Expr *sz = nullptr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2885 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2886 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2887 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2888 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2889 | ArraySizeModifier getSizeModifier() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2890 | return ArraySizeModifier(ArrayTypeBits.SizeModifier); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2891 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2892 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2893 | Qualifiers getIndexTypeQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2894 | return Qualifiers::fromCVRMask(getIndexTypeCVRQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2895 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2896 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2897 | unsigned getIndexTypeCVRQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2898 | return ArrayTypeBits.IndexTypeQuals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2899 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2900 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2901 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2902 | return T->getTypeClass() == ConstantArray || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2903 | T->getTypeClass() == VariableArray || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2904 | T->getTypeClass() == IncompleteArray || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2905 | T->getTypeClass() == DependentSizedArray; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2906 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2907 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2908 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2909 | /// Represents the canonical version of C arrays with a specified constant size. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2910 | /// For example, the canonical type for 'int A[4 + 4*100]' is a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2911 | /// ConstantArrayType where the element type is 'int' and the size is 404. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2912 | class ConstantArrayType final | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2913 | : public ArrayType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2914 | private llvm::TrailingObjects<ConstantArrayType, const Expr *> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2915 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2916 | friend TrailingObjects; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2917 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2918 | llvm::APInt Size; // Allows us to unique the type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2919 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2920 | ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2921 | const Expr *sz, ArraySizeModifier sm, unsigned tq) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2922 | : ArrayType(ConstantArray, et, can, sm, tq, sz), Size(size) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2923 | ConstantArrayTypeBits.HasStoredSizeExpr = sz != nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2924 | if (ConstantArrayTypeBits.HasStoredSizeExpr) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2925 | assert(!can.isNull() && "canonical constant array should not have size")((!can.isNull() && "canonical constant array should not have size" ) ? static_cast<void> (0) : __assert_fail ("!can.isNull() && \"canonical constant array should not have size\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 2925, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2926 | *getTrailingObjects<const Expr*>() = sz; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2927 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2928 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2929 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2930 | unsigned numTrailingObjects(OverloadToken<const Expr*>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2931 | return ConstantArrayTypeBits.HasStoredSizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2932 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2933 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2934 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2935 | const llvm::APInt &getSize() const { return Size; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2936 | const Expr *getSizeExpr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2937 | return ConstantArrayTypeBits.HasStoredSizeExpr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2938 | ? *getTrailingObjects<const Expr *>() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2939 | : nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2940 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2941 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2942 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2943 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2944 | /// Determine the number of bits required to address a member of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2945 | // an array with the given element type and number of elements. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2946 | static unsigned getNumAddressingBits(const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2947 | QualType ElementType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2948 | const llvm::APInt &NumElements); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2949 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2950 | /// Determine the maximum number of active bits that an array's size | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2951 | /// can require, which limits the maximum size of the array. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2952 | static unsigned getMaxSizeBits(const ASTContext &Context); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2953 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2954 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2955 | Profile(ID, Ctx, getElementType(), getSize(), getSizeExpr(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2956 | getSizeModifier(), getIndexTypeCVRQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2957 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2958 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2959 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2960 | QualType ET, const llvm::APInt &ArraySize, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2961 | const Expr *SizeExpr, ArraySizeModifier SizeMod, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2962 | unsigned TypeQuals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2963 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2964 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2965 | return T->getTypeClass() == ConstantArray; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2966 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2967 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2968 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2969 | /// Represents a C array with an unspecified size. For example 'int A[]' has | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2970 | /// an IncompleteArrayType where the element type is 'int' and the size is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2971 | /// unspecified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2972 | class IncompleteArrayType : public ArrayType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2973 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2974 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2975 | IncompleteArrayType(QualType et, QualType can, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2976 | ArraySizeModifier sm, unsigned tq) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2977 | : ArrayType(IncompleteArray, et, can, sm, tq) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2978 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2979 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2980 | friend class StmtIteratorBase; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2981 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2982 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2983 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2984 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2985 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2986 | return T->getTypeClass() == IncompleteArray; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2987 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2988 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2989 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2990 | Profile(ID, getElementType(), getSizeModifier(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2991 | getIndexTypeCVRQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2992 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2993 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2994 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2995 | ArraySizeModifier SizeMod, unsigned TypeQuals) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2996 | ID.AddPointer(ET.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2997 | ID.AddInteger(SizeMod); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2998 | ID.AddInteger(TypeQuals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2999 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3000 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3002 | /// Represents a C array with a specified size that is not an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3003 | /// integer-constant-expression. For example, 'int s[x+foo()]'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3004 | /// Since the size expression is an arbitrary expression, we store it as such. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3005 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3006 | /// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3007 | /// should not be: two lexically equivalent variable array types could mean | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3008 | /// different things, for example, these variables do not have the same type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3009 | /// dynamically: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3010 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3011 | /// void foo(int x) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3012 | /// int Y[x]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3013 | /// ++x; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3014 | /// int Z[x]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3015 | /// } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3016 | class VariableArrayType : public ArrayType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3017 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3019 | /// An assignment-expression. VLA's are only permitted within | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3020 | /// a function block. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3021 | Stmt *SizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3023 | /// The range spanned by the left and right array brackets. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3024 | SourceRange Brackets; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3026 | VariableArrayType(QualType et, QualType can, Expr *e, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3027 | ArraySizeModifier sm, unsigned tq, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3028 | SourceRange brackets) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3029 | : ArrayType(VariableArray, et, can, sm, tq, e), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3030 | SizeExpr((Stmt*) e), Brackets(brackets) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3031 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3032 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3033 | friend class StmtIteratorBase; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3034 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3035 | Expr *getSizeExpr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3036 | // We use C-style casts instead of cast<> here because we do not wish | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3037 | // to have a dependency of Type.h on Stmt.h/Expr.h. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3038 | return (Expr*) SizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3039 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3040 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3041 | SourceRange getBracketsRange() const { return Brackets; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3042 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3043 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3044 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3045 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3046 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3047 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3048 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3049 | return T->getTypeClass() == VariableArray; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3050 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3051 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3052 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3053 | llvm_unreachable("Cannot unique VariableArrayTypes.")::llvm::llvm_unreachable_internal("Cannot unique VariableArrayTypes." , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 3053); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3054 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3055 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3056 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3057 | /// Represents an array type in C++ whose size is a value-dependent expression. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3058 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3059 | /// For example: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3060 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3061 | /// template<typename T, int Size> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3062 | /// class array { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3063 | /// T data[Size]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3064 | /// }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3065 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3066 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3067 | /// For these types, we won't actually know what the array bound is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3068 | /// until template instantiation occurs, at which point this will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3069 | /// become either a ConstantArrayType or a VariableArrayType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3070 | class DependentSizedArrayType : public ArrayType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3071 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3072 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3073 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3074 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3075 | /// An assignment expression that will instantiate to the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3076 | /// size of the array. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3077 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3078 | /// The expression itself might be null, in which case the array | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3079 | /// type will have its size deduced from an initializer. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3080 | Stmt *SizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3081 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3082 | /// The range spanned by the left and right array brackets. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3083 | SourceRange Brackets; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3084 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3085 | DependentSizedArrayType(const ASTContext &Context, QualType et, QualType can, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3086 | Expr *e, ArraySizeModifier sm, unsigned tq, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3087 | SourceRange brackets); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3088 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3089 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3090 | friend class StmtIteratorBase; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3091 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3092 | Expr *getSizeExpr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3093 | // We use C-style casts instead of cast<> here because we do not wish | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3094 | // to have a dependency of Type.h on Stmt.h/Expr.h. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3095 | return (Expr*) SizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3096 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3097 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3098 | SourceRange getBracketsRange() const { return Brackets; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3099 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3100 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3101 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3102 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3103 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3104 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3105 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3106 | return T->getTypeClass() == DependentSizedArray; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3107 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3108 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3109 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3110 | Profile(ID, Context, getElementType(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3111 | getSizeModifier(), getIndexTypeCVRQualifiers(), getSizeExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3112 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3113 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3114 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3115 | QualType ET, ArraySizeModifier SizeMod, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3116 | unsigned TypeQuals, Expr *E); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3117 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3118 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3119 | /// Represents an extended address space qualifier where the input address space | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3120 | /// value is dependent. Non-dependent address spaces are not represented with a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3121 | /// special Type subclass; they are stored on an ExtQuals node as part of a QualType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3122 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3123 | /// For example: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3124 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3125 | /// template<typename T, int AddrSpace> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3126 | /// class AddressSpace { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3127 | /// typedef T __attribute__((address_space(AddrSpace))) type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3128 | /// } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3129 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3130 | class DependentAddressSpaceType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3131 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3132 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3133 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3134 | Expr *AddrSpaceExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3135 | QualType PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3136 | SourceLocation loc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3137 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3138 | DependentAddressSpaceType(const ASTContext &Context, QualType PointeeType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3139 | QualType can, Expr *AddrSpaceExpr, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3140 | SourceLocation loc); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3141 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3142 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3143 | Expr *getAddrSpaceExpr() const { return AddrSpaceExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3144 | QualType getPointeeType() const { return PointeeType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3145 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3146 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3147 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3148 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3149 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3150 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3151 | return T->getTypeClass() == DependentAddressSpace; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3152 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3153 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3154 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3155 | Profile(ID, Context, getPointeeType(), getAddrSpaceExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3156 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3157 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3158 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3159 | QualType PointeeType, Expr *AddrSpaceExpr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3160 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3161 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3162 | /// Represents an extended vector type where either the type or size is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3163 | /// dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3164 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3165 | /// For example: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3166 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3167 | /// template<typename T, int Size> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3168 | /// class vector { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3169 | /// typedef T __attribute__((ext_vector_type(Size))) type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3170 | /// } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3171 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3172 | class DependentSizedExtVectorType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3173 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3174 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3175 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3176 | Expr *SizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3177 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3178 | /// The element type of the array. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3179 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3180 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3181 | SourceLocation loc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3182 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3183 | DependentSizedExtVectorType(const ASTContext &Context, QualType ElementType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3184 | QualType can, Expr *SizeExpr, SourceLocation loc); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3185 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3186 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3187 | Expr *getSizeExpr() const { return SizeExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3188 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3189 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3190 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3191 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3192 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3193 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3194 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3195 | return T->getTypeClass() == DependentSizedExtVector; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3196 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3197 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3198 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3199 | Profile(ID, Context, getElementType(), getSizeExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3200 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3201 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3202 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3203 | QualType ElementType, Expr *SizeExpr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3204 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3205 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3206 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3207 | /// Represents a GCC generic vector type. This type is created using | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3208 | /// __attribute__((vector_size(n)), where "n" specifies the vector size in | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3209 | /// bytes; or from an Altivec __vector or vector declaration. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3210 | /// Since the constructor takes the number of vector elements, the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3211 | /// client is responsible for converting the size into the number of elements. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3212 | class VectorType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3213 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3214 | enum VectorKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3215 | /// not a target-specific vector type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3216 | GenericVector, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3217 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3218 | /// is AltiVec vector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3219 | AltiVecVector, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3220 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3221 | /// is AltiVec 'vector Pixel' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3222 | AltiVecPixel, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3223 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3224 | /// is AltiVec 'vector bool ...' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3225 | AltiVecBool, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3226 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3227 | /// is ARM Neon vector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3228 | NeonVector, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3229 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3230 | /// is ARM Neon polynomial vector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3231 | NeonPolyVector, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3232 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3233 | /// is AArch64 SVE fixed-length data vector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3234 | SveFixedLengthDataVector, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3235 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3236 | /// is AArch64 SVE fixed-length predicate vector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3237 | SveFixedLengthPredicateVector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3238 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3239 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3240 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3241 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3242 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3243 | /// The element type of the vector. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3244 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3245 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3246 | VectorType(QualType vecType, unsigned nElements, QualType canonType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3247 | VectorKind vecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3248 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3249 | VectorType(TypeClass tc, QualType vecType, unsigned nElements, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3250 | QualType canonType, VectorKind vecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3251 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3252 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3253 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3254 | unsigned getNumElements() const { return VectorTypeBits.NumElements; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3255 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3256 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3257 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3258 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3259 | VectorKind getVectorKind() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3260 | return VectorKind(VectorTypeBits.VecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3261 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3262 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3263 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3264 | Profile(ID, getElementType(), getNumElements(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3265 | getTypeClass(), getVectorKind()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3266 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3267 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3268 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3269 | unsigned NumElements, TypeClass TypeClass, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3270 | VectorKind VecKind) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3271 | ID.AddPointer(ElementType.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3272 | ID.AddInteger(NumElements); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3273 | ID.AddInteger(TypeClass); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3274 | ID.AddInteger(VecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3275 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3276 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3277 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3278 | return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3279 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3280 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3281 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3282 | /// Represents a vector type where either the type or size is dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3283 | //// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3284 | /// For example: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3285 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3286 | /// template<typename T, int Size> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3287 | /// class vector { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3288 | /// typedef T __attribute__((vector_size(Size))) type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3289 | /// } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3290 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3291 | class DependentVectorType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3292 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3293 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3294 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3295 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3296 | Expr *SizeExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3297 | SourceLocation Loc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3298 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3299 | DependentVectorType(const ASTContext &Context, QualType ElementType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3300 | QualType CanonType, Expr *SizeExpr, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3301 | SourceLocation Loc, VectorType::VectorKind vecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3302 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3303 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3304 | Expr *getSizeExpr() const { return SizeExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3305 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3306 | SourceLocation getAttributeLoc() const { return Loc; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3307 | VectorType::VectorKind getVectorKind() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3308 | return VectorType::VectorKind(VectorTypeBits.VecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3309 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3310 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3311 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3312 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3313 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3314 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3315 | return T->getTypeClass() == DependentVector; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3316 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3317 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3318 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3319 | Profile(ID, Context, getElementType(), getSizeExpr(), getVectorKind()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3320 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3321 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3322 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3323 | QualType ElementType, const Expr *SizeExpr, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3324 | VectorType::VectorKind VecKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3325 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3326 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3327 | /// ExtVectorType - Extended vector type. This type is created using | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3328 | /// __attribute__((ext_vector_type(n)), where "n" is the number of elements. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3329 | /// Unlike vector_size, ext_vector_type is only allowed on typedef's. This | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3330 | /// class enables syntactic extensions, like Vector Components for accessing | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3331 | /// points (as .xyzw), colors (as .rgba), and textures (modeled after OpenGL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3332 | /// Shading Language). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3333 | class ExtVectorType : public VectorType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3334 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3335 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3336 | ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3337 | : VectorType(ExtVector, vecType, nElements, canonType, GenericVector) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3338 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3339 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3340 | static int getPointAccessorIdx(char c) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3341 | switch (c) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3342 | default: return -1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3343 | case 'x': case 'r': return 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3344 | case 'y': case 'g': return 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3345 | case 'z': case 'b': return 2; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3346 | case 'w': case 'a': return 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3347 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3348 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3349 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3350 | static int getNumericAccessorIdx(char c) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3351 | switch (c) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3352 | default: return -1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3353 | case '0': return 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3354 | case '1': return 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3355 | case '2': return 2; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3356 | case '3': return 3; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3357 | case '4': return 4; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3358 | case '5': return 5; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3359 | case '6': return 6; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3360 | case '7': return 7; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3361 | case '8': return 8; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3362 | case '9': return 9; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3363 | case 'A': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3364 | case 'a': return 10; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3365 | case 'B': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3366 | case 'b': return 11; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3367 | case 'C': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3368 | case 'c': return 12; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3369 | case 'D': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3370 | case 'd': return 13; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3371 | case 'E': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3372 | case 'e': return 14; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3373 | case 'F': | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3374 | case 'f': return 15; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3375 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3376 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3377 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3378 | static int getAccessorIdx(char c, bool isNumericAccessor) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3379 | if (isNumericAccessor) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3380 | return getNumericAccessorIdx(c); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3381 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3382 | return getPointAccessorIdx(c); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3383 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3384 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3385 | bool isAccessorWithinNumElements(char c, bool isNumericAccessor) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3386 | if (int idx = getAccessorIdx(c, isNumericAccessor)+1) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3387 | return unsigned(idx-1) < getNumElements(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3388 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3389 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3390 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3391 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3392 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3393 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3394 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3395 | return T->getTypeClass() == ExtVector; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3396 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3397 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3398 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3399 | /// Represents a matrix type, as defined in the Matrix Types clang extensions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3400 | /// __attribute__((matrix_type(rows, columns))), where "rows" specifies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3401 | /// number of rows and "columns" specifies the number of columns. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3402 | class MatrixType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3403 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3404 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3405 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3406 | /// The element type of the matrix. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3407 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3408 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3409 | MatrixType(QualType ElementTy, QualType CanonElementTy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3410 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3411 | MatrixType(TypeClass TypeClass, QualType ElementTy, QualType CanonElementTy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3412 | const Expr *RowExpr = nullptr, const Expr *ColumnExpr = nullptr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3413 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3414 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3415 | /// Returns type of the elements being stored in the matrix | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3416 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3417 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3418 | /// Valid elements types are the following: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3419 | /// * an integer type (as in C2x 6.2.5p19), but excluding enumerated types | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3420 | /// and _Bool | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3421 | /// * the standard floating types float or double | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3422 | /// * a half-precision floating point type, if one is supported on the target | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3423 | static bool isValidElementType(QualType T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3424 | return T->isDependentType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3425 | (T->isRealType() && !T->isBooleanType() && !T->isEnumeralType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3426 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3427 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3428 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3429 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3430 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3431 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3432 | return T->getTypeClass() == ConstantMatrix || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3433 | T->getTypeClass() == DependentSizedMatrix; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3434 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3435 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3436 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3437 | /// Represents a concrete matrix type with constant number of rows and columns | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3438 | class ConstantMatrixType final : public MatrixType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3439 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3440 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3441 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3442 | /// The element type of the matrix. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3443 | // FIXME: Appears to be unused? There is also MatrixType::ElementType... | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3444 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3445 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3446 | /// Number of rows and columns. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3447 | unsigned NumRows; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3448 | unsigned NumColumns; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3449 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3450 | static constexpr unsigned MaxElementsPerDimension = (1 << 20) - 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3451 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3452 | ConstantMatrixType(QualType MatrixElementType, unsigned NRows, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3453 | unsigned NColumns, QualType CanonElementType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3454 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3455 | ConstantMatrixType(TypeClass typeClass, QualType MatrixType, unsigned NRows, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3456 | unsigned NColumns, QualType CanonElementType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3457 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3458 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3459 | /// Returns the number of rows in the matrix. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3460 | unsigned getNumRows() const { return NumRows; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3461 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3462 | /// Returns the number of columns in the matrix. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3463 | unsigned getNumColumns() const { return NumColumns; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3464 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3465 | /// Returns the number of elements required to embed the matrix into a vector. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3466 | unsigned getNumElementsFlattened() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3467 | return getNumRows() * getNumColumns(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3468 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3469 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3470 | /// Returns true if \p NumElements is a valid matrix dimension. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3471 | static constexpr bool isDimensionValid(size_t NumElements) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3472 | return NumElements > 0 && NumElements <= MaxElementsPerDimension; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3473 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3474 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3475 | /// Returns the maximum number of elements per dimension. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3476 | static constexpr unsigned getMaxElementsPerDimension() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3477 | return MaxElementsPerDimension; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3478 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3479 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3480 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3481 | Profile(ID, getElementType(), getNumRows(), getNumColumns(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3482 | getTypeClass()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3483 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3484 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3485 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3486 | unsigned NumRows, unsigned NumColumns, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3487 | TypeClass TypeClass) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3488 | ID.AddPointer(ElementType.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3489 | ID.AddInteger(NumRows); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3490 | ID.AddInteger(NumColumns); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3491 | ID.AddInteger(TypeClass); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3492 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3493 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3494 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3495 | return T->getTypeClass() == ConstantMatrix; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3496 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3497 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3498 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3499 | /// Represents a matrix type where the type and the number of rows and columns | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3500 | /// is dependent on a template. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3501 | class DependentSizedMatrixType final : public MatrixType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3502 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3503 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3504 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3505 | Expr *RowExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3506 | Expr *ColumnExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3507 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3508 | SourceLocation loc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3509 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3510 | DependentSizedMatrixType(const ASTContext &Context, QualType ElementType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3511 | QualType CanonicalType, Expr *RowExpr, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3512 | Expr *ColumnExpr, SourceLocation loc); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3513 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3514 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3515 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3516 | Expr *getRowExpr() const { return RowExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3517 | Expr *getColumnExpr() const { return ColumnExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3518 | SourceLocation getAttributeLoc() const { return loc; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3519 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3520 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3521 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3522 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3523 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3524 | return T->getTypeClass() == DependentSizedMatrix; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3525 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3526 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3527 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3528 | Profile(ID, Context, getElementType(), getRowExpr(), getColumnExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3529 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3530 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3531 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3532 | QualType ElementType, Expr *RowExpr, Expr *ColumnExpr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3533 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3534 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3535 | /// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3536 | /// class of FunctionNoProtoType and FunctionProtoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3537 | class FunctionType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3538 | // The type returned by the function. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3539 | QualType ResultType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3540 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3541 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3542 | /// Interesting information about a specific parameter that can't simply | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3543 | /// be reflected in parameter's type. This is only used by FunctionProtoType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3544 | /// but is in FunctionType to make this class available during the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3545 | /// specification of the bases of FunctionProtoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3546 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3547 | /// It makes sense to model language features this way when there's some | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3548 | /// sort of parameter-specific override (such as an attribute) that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3549 | /// affects how the function is called. For example, the ARC ns_consumed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3550 | /// attribute changes whether a parameter is passed at +0 (the default) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3551 | /// or +1 (ns_consumed). This must be reflected in the function type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3552 | /// but isn't really a change to the parameter type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3553 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3554 | /// One serious disadvantage of modelling language features this way is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3555 | /// that they generally do not work with language features that attempt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3556 | /// to destructure types. For example, template argument deduction will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3557 | /// not be able to match a parameter declared as | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3558 | /// T (*)(U) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3559 | /// against an argument of type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3560 | /// void (*)(__attribute__((ns_consumed)) id) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3561 | /// because the substitution of T=void, U=id into the former will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3562 | /// not produce the latter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3563 | class ExtParameterInfo { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3564 | enum { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3565 | ABIMask = 0x0F, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3566 | IsConsumed = 0x10, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3567 | HasPassObjSize = 0x20, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3568 | IsNoEscape = 0x40, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3569 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3570 | unsigned char Data = 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3571 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3572 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3573 | ExtParameterInfo() = default; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3574 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3575 | /// Return the ABI treatment of this parameter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3576 | ParameterABI getABI() const { return ParameterABI(Data & ABIMask); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3577 | ExtParameterInfo withABI(ParameterABI kind) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3578 | ExtParameterInfo copy = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3579 | copy.Data = (copy.Data & ~ABIMask) | unsigned(kind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3580 | return copy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3581 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3582 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3583 | /// Is this parameter considered "consumed" by Objective-C ARC? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3584 | /// Consumed parameters must have retainable object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3585 | bool isConsumed() const { return (Data & IsConsumed); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3586 | ExtParameterInfo withIsConsumed(bool consumed) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3587 | ExtParameterInfo copy = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3588 | if (consumed) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3589 | copy.Data |= IsConsumed; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3590 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3591 | copy.Data &= ~IsConsumed; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3592 | return copy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3593 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3594 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3595 | bool hasPassObjectSize() const { return Data & HasPassObjSize; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3596 | ExtParameterInfo withHasPassObjectSize() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3597 | ExtParameterInfo Copy = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3598 | Copy.Data |= HasPassObjSize; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3599 | return Copy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3600 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3601 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3602 | bool isNoEscape() const { return Data & IsNoEscape; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3603 | ExtParameterInfo withIsNoEscape(bool NoEscape) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3604 | ExtParameterInfo Copy = *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3605 | if (NoEscape) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3606 | Copy.Data |= IsNoEscape; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3607 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3608 | Copy.Data &= ~IsNoEscape; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3609 | return Copy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3610 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3611 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3612 | unsigned char getOpaqueValue() const { return Data; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3613 | static ExtParameterInfo getFromOpaqueValue(unsigned char data) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3614 | ExtParameterInfo result; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3615 | result.Data = data; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3616 | return result; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3617 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3618 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3619 | friend bool operator==(ExtParameterInfo lhs, ExtParameterInfo rhs) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3620 | return lhs.Data == rhs.Data; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3621 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3622 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3623 | friend bool operator!=(ExtParameterInfo lhs, ExtParameterInfo rhs) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3624 | return lhs.Data != rhs.Data; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3625 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3626 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3627 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3628 | /// A class which abstracts out some details necessary for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3629 | /// making a call. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3630 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3631 | /// It is not actually used directly for storing this information in | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3632 | /// a FunctionType, although FunctionType does currently use the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3633 | /// same bit-pattern. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3634 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3635 | // If you add a field (say Foo), other than the obvious places (both, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3636 | // constructors, compile failures), what you need to update is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3637 | // * Operator== | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3638 | // * getFoo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3639 | // * withFoo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3640 | // * functionType. Add Foo, getFoo. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3641 | // * ASTContext::getFooType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3642 | // * ASTContext::mergeFunctionTypes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3643 | // * FunctionNoProtoType::Profile | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3644 | // * FunctionProtoType::Profile | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3645 | // * TypePrinter::PrintFunctionProto | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3646 | // * AST read and write | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3647 | // * Codegen | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3648 | class ExtInfo { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3649 | friend class FunctionType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3650 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3651 | // Feel free to rearrange or add bits, but if you go over 16, you'll need to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3652 | // adjust the Bits field below, and if you add bits, you'll need to adjust | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3653 | // Type::FunctionTypeBitfields::ExtInfo as well. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3654 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3655 | // | CC |noreturn|produces|nocallersavedregs|regparm|nocfcheck|cmsenscall| | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3656 | // |0 .. 4| 5 | 6 | 7 |8 .. 10| 11 | 12 | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3657 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3658 | // regparm is either 0 (no regparm attribute) or the regparm value+1. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3659 | enum { CallConvMask = 0x1F }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3660 | enum { NoReturnMask = 0x20 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3661 | enum { ProducesResultMask = 0x40 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3662 | enum { NoCallerSavedRegsMask = 0x80 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3663 | enum { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3664 | RegParmMask = 0x700, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3665 | RegParmOffset = 8 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3666 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3667 | enum { NoCfCheckMask = 0x800 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3668 | enum { CmseNSCallMask = 0x1000 }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3669 | uint16_t Bits = CC_C; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3670 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3671 | ExtInfo(unsigned Bits) : Bits(static_cast<uint16_t>(Bits)) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3672 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3673 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3674 | // Constructor with no defaults. Use this when you know that you | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3675 | // have all the elements (when reading an AST file for example). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3676 | ExtInfo(bool noReturn, bool hasRegParm, unsigned regParm, CallingConv cc, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3677 | bool producesResult, bool noCallerSavedRegs, bool NoCfCheck, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3678 | bool cmseNSCall) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3679 | assert((!hasRegParm || regParm < 7) && "Invalid regparm value")(((!hasRegParm || regParm < 7) && "Invalid regparm value" ) ? static_cast<void> (0) : __assert_fail ("(!hasRegParm || regParm < 7) && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 3679, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3680 | Bits = ((unsigned)cc) | (noReturn ? NoReturnMask : 0) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3681 | (producesResult ? ProducesResultMask : 0) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3682 | (noCallerSavedRegs ? NoCallerSavedRegsMask : 0) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3683 | (hasRegParm ? ((regParm + 1) << RegParmOffset) : 0) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3684 | (NoCfCheck ? NoCfCheckMask : 0) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3685 | (cmseNSCall ? CmseNSCallMask : 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3686 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3687 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3688 | // Constructor with all defaults. Use when for example creating a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3689 | // function known to use defaults. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3690 | ExtInfo() = default; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3691 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3692 | // Constructor with just the calling convention, which is an important part | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3693 | // of the canonical type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3694 | ExtInfo(CallingConv CC) : Bits(CC) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3695 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3696 | bool getNoReturn() const { return Bits & NoReturnMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3697 | bool getProducesResult() const { return Bits & ProducesResultMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3698 | bool getCmseNSCall() const { return Bits & CmseNSCallMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3699 | bool getNoCallerSavedRegs() const { return Bits & NoCallerSavedRegsMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3700 | bool getNoCfCheck() const { return Bits & NoCfCheckMask; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3701 | bool getHasRegParm() const { return ((Bits & RegParmMask) >> RegParmOffset) != 0; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3702 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3703 | unsigned getRegParm() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3704 | unsigned RegParm = (Bits & RegParmMask) >> RegParmOffset; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3705 | if (RegParm > 0) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3706 | --RegParm; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3707 | return RegParm; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3708 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3709 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3710 | CallingConv getCC() const { return CallingConv(Bits & CallConvMask); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3711 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3712 | bool operator==(ExtInfo Other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3713 | return Bits == Other.Bits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3714 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3715 | bool operator!=(ExtInfo Other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3716 | return Bits != Other.Bits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3717 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3718 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3719 | // Note that we don't have setters. That is by design, use | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3720 | // the following with methods instead of mutating these objects. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3721 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3722 | ExtInfo withNoReturn(bool noReturn) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3723 | if (noReturn) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3724 | return ExtInfo(Bits | NoReturnMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3725 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3726 | return ExtInfo(Bits & ~NoReturnMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3727 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3728 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3729 | ExtInfo withProducesResult(bool producesResult) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3730 | if (producesResult) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3731 | return ExtInfo(Bits | ProducesResultMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3732 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3733 | return ExtInfo(Bits & ~ProducesResultMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3734 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3735 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3736 | ExtInfo withCmseNSCall(bool cmseNSCall) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3737 | if (cmseNSCall) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3738 | return ExtInfo(Bits | CmseNSCallMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3739 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3740 | return ExtInfo(Bits & ~CmseNSCallMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3741 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3742 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3743 | ExtInfo withNoCallerSavedRegs(bool noCallerSavedRegs) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3744 | if (noCallerSavedRegs) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3745 | return ExtInfo(Bits | NoCallerSavedRegsMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3746 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3747 | return ExtInfo(Bits & ~NoCallerSavedRegsMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3748 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3749 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3750 | ExtInfo withNoCfCheck(bool noCfCheck) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3751 | if (noCfCheck) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3752 | return ExtInfo(Bits | NoCfCheckMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3753 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3754 | return ExtInfo(Bits & ~NoCfCheckMask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3755 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3756 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3757 | ExtInfo withRegParm(unsigned RegParm) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3758 | assert(RegParm < 7 && "Invalid regparm value")((RegParm < 7 && "Invalid regparm value") ? static_cast <void> (0) : __assert_fail ("RegParm < 7 && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 3758, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3759 | return ExtInfo((Bits & ~RegParmMask) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3760 | ((RegParm + 1) << RegParmOffset)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3761 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3762 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3763 | ExtInfo withCallingConv(CallingConv cc) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3764 | return ExtInfo((Bits & ~CallConvMask) | (unsigned) cc); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3765 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3766 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3767 | void Profile(llvm::FoldingSetNodeID &ID) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3768 | ID.AddInteger(Bits); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3769 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3770 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3771 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3772 | /// A simple holder for a QualType representing a type in an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3773 | /// exception specification. Unfortunately needed by FunctionProtoType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3774 | /// because TrailingObjects cannot handle repeated types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3775 | struct ExceptionType { QualType Type; }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3776 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3777 | /// A simple holder for various uncommon bits which do not fit in | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3778 | /// FunctionTypeBitfields. Aligned to alignof(void *) to maintain the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3779 | /// alignment of subsequent objects in TrailingObjects. You must update | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3780 | /// hasExtraBitfields in FunctionProtoType after adding extra data here. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3781 | struct alignas(void *) FunctionTypeExtraBitfields { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3782 | /// The number of types in the exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3783 | /// A whole unsigned is not needed here and according to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3784 | /// [implimits] 8 bits would be enough here. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3785 | unsigned NumExceptionType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3786 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3787 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3788 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3789 | FunctionType(TypeClass tc, QualType res, QualType Canonical, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3790 | TypeDependence Dependence, ExtInfo Info) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3791 | : Type(tc, Canonical, Dependence), ResultType(res) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3792 | FunctionTypeBits.ExtInfo = Info.Bits; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3793 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3794 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3795 | Qualifiers getFastTypeQuals() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3796 | return Qualifiers::fromFastMask(FunctionTypeBits.FastTypeQuals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3797 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3798 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3799 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3800 | QualType getReturnType() const { return ResultType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3801 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3802 | bool getHasRegParm() const { return getExtInfo().getHasRegParm(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3803 | unsigned getRegParmType() const { return getExtInfo().getRegParm(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3804 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3805 | /// Determine whether this function type includes the GNU noreturn | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3806 | /// attribute. The C++11 [[noreturn]] attribute does not affect the function | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3807 | /// type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3808 | bool getNoReturnAttr() const { return getExtInfo().getNoReturn(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3809 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3810 | bool getCmseNSCallAttr() const { return getExtInfo().getCmseNSCall(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3811 | CallingConv getCallConv() const { return getExtInfo().getCC(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3812 | ExtInfo getExtInfo() const { return ExtInfo(FunctionTypeBits.ExtInfo); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3813 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3814 | static_assert((~Qualifiers::FastMask & Qualifiers::CVRMask) == 0, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3815 | "Const, volatile and restrict are assumed to be a subset of " | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3816 | "the fast qualifiers."); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3817 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3818 | bool isConst() const { return getFastTypeQuals().hasConst(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3819 | bool isVolatile() const { return getFastTypeQuals().hasVolatile(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3820 | bool isRestrict() const { return getFastTypeQuals().hasRestrict(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3821 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3822 | /// Determine the type of an expression that calls a function of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3823 | /// this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3824 | QualType getCallResultType(const ASTContext &Context) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3825 | return getReturnType().getNonLValueExprType(Context); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3826 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3827 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3828 | static StringRef getNameForCallConv(CallingConv CC); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3829 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3830 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3831 | return T->getTypeClass() == FunctionNoProto || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3832 | T->getTypeClass() == FunctionProto; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3833 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3834 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3835 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3836 | /// Represents a K&R-style 'int foo()' function, which has | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3837 | /// no information available about its arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3838 | class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3839 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3840 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3841 | FunctionNoProtoType(QualType Result, QualType Canonical, ExtInfo Info) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3842 | : FunctionType(FunctionNoProto, Result, Canonical, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3843 | Result->getDependence() & | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3844 | ~(TypeDependence::DependentInstantiation | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3845 | TypeDependence::UnexpandedPack), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3846 | Info) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3847 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3848 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3849 | // No additional state past what FunctionType provides. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3850 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3851 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3852 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3853 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3854 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3855 | Profile(ID, getReturnType(), getExtInfo()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3856 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3857 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3858 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3859 | ExtInfo Info) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3860 | Info.Profile(ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3861 | ID.AddPointer(ResultType.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3862 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3863 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3864 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3865 | return T->getTypeClass() == FunctionNoProto; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3866 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3867 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3868 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3869 | /// Represents a prototype with parameter type info, e.g. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3870 | /// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3871 | /// parameters, not as having a single void parameter. Such a type can have | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3872 | /// an exception specification, but this specification is not part of the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3873 | /// canonical type. FunctionProtoType has several trailing objects, some of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3874 | /// which optional. For more information about the trailing objects see | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3875 | /// the first comment inside FunctionProtoType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3876 | class FunctionProtoType final | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3877 | : public FunctionType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3878 | public llvm::FoldingSetNode, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3879 | private llvm::TrailingObjects< | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3880 | FunctionProtoType, QualType, SourceLocation, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3881 | FunctionType::FunctionTypeExtraBitfields, FunctionType::ExceptionType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3882 | Expr *, FunctionDecl *, FunctionType::ExtParameterInfo, Qualifiers> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3883 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3884 | friend TrailingObjects; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3885 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3886 | // FunctionProtoType is followed by several trailing objects, some of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3887 | // which optional. They are in order: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3888 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3889 | // * An array of getNumParams() QualType holding the parameter types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3890 | // Always present. Note that for the vast majority of FunctionProtoType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3891 | // these will be the only trailing objects. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3892 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3893 | // * Optionally if the function is variadic, the SourceLocation of the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3894 | // ellipsis. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3895 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3896 | // * Optionally if some extra data is stored in FunctionTypeExtraBitfields | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3897 | // (see FunctionTypeExtraBitfields and FunctionTypeBitfields): | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3898 | // a single FunctionTypeExtraBitfields. Present if and only if | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3899 | // hasExtraBitfields() is true. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3900 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3901 | // * Optionally exactly one of: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3902 | // * an array of getNumExceptions() ExceptionType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3903 | // * a single Expr *, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3904 | // * a pair of FunctionDecl *, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3905 | // * a single FunctionDecl * | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3906 | // used to store information about the various types of exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3907 | // specification. See getExceptionSpecSize for the details. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3908 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3909 | // * Optionally an array of getNumParams() ExtParameterInfo holding | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3910 | // an ExtParameterInfo for each of the parameters. Present if and | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3911 | // only if hasExtParameterInfos() is true. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3912 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3913 | // * Optionally a Qualifiers object to represent extra qualifiers that can't | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3914 | // be represented by FunctionTypeBitfields.FastTypeQuals. Present if and only | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3915 | // if hasExtQualifiers() is true. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3916 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3917 | // The optional FunctionTypeExtraBitfields has to be before the data | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3918 | // related to the exception specification since it contains the number | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3919 | // of exception types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3920 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3921 | // We put the ExtParameterInfos last. If all were equal, it would make | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3922 | // more sense to put these before the exception specification, because | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3923 | // it's much easier to skip past them compared to the elaborate switch | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3924 | // required to skip the exception specification. However, all is not | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3925 | // equal; ExtParameterInfos are used to model very uncommon features, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3926 | // and it's better not to burden the more common paths. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3927 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3928 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3929 | /// Holds information about the various types of exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3930 | /// ExceptionSpecInfo is not stored as such in FunctionProtoType but is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3931 | /// used to group together the various bits of information about the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3932 | /// exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3933 | struct ExceptionSpecInfo { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3934 | /// The kind of exception specification this is. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3935 | ExceptionSpecificationType Type = EST_None; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3936 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3937 | /// Explicitly-specified list of exception types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3938 | ArrayRef<QualType> Exceptions; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3939 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3940 | /// Noexcept expression, if this is a computed noexcept specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3941 | Expr *NoexceptExpr = nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3942 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3943 | /// The function whose exception specification this is, for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3944 | /// EST_Unevaluated and EST_Uninstantiated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3945 | FunctionDecl *SourceDecl = nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3946 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3947 | /// The function template whose exception specification this is instantiated | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3948 | /// from, for EST_Uninstantiated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3949 | FunctionDecl *SourceTemplate = nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3950 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3951 | ExceptionSpecInfo() = default; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3952 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3953 | ExceptionSpecInfo(ExceptionSpecificationType EST) : Type(EST) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3954 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3955 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3956 | /// Extra information about a function prototype. ExtProtoInfo is not | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3957 | /// stored as such in FunctionProtoType but is used to group together | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3958 | /// the various bits of extra information about a function prototype. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3959 | struct ExtProtoInfo { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3960 | FunctionType::ExtInfo ExtInfo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3961 | bool Variadic : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3962 | bool HasTrailingReturn : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3963 | Qualifiers TypeQuals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3964 | RefQualifierKind RefQualifier = RQ_None; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3965 | ExceptionSpecInfo ExceptionSpec; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3966 | const ExtParameterInfo *ExtParameterInfos = nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3967 | SourceLocation EllipsisLoc; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3968 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3969 | ExtProtoInfo() : Variadic(false), HasTrailingReturn(false) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3970 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3971 | ExtProtoInfo(CallingConv CC) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3972 | : ExtInfo(CC), Variadic(false), HasTrailingReturn(false) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3973 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3974 | ExtProtoInfo withExceptionSpec(const ExceptionSpecInfo &ESI) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3975 | ExtProtoInfo Result(*this); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3976 | Result.ExceptionSpec = ESI; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3977 | return Result; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3978 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3979 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3980 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3981 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3982 | unsigned numTrailingObjects(OverloadToken<QualType>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3983 | return getNumParams(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3984 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3985 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3986 | unsigned numTrailingObjects(OverloadToken<SourceLocation>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3987 | return isVariadic(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3988 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3989 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3990 | unsigned numTrailingObjects(OverloadToken<FunctionTypeExtraBitfields>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3991 | return hasExtraBitfields(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3992 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3993 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3994 | unsigned numTrailingObjects(OverloadToken<ExceptionType>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3995 | return getExceptionSpecSize().NumExceptionType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3996 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3997 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3998 | unsigned numTrailingObjects(OverloadToken<Expr *>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3999 | return getExceptionSpecSize().NumExprPtr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4000 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4002 | unsigned numTrailingObjects(OverloadToken<FunctionDecl *>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4003 | return getExceptionSpecSize().NumFunctionDeclPtr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4004 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4006 | unsigned numTrailingObjects(OverloadToken<ExtParameterInfo>) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4007 | return hasExtParameterInfos() ? getNumParams() : 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4008 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4009 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4010 | /// Determine whether there are any argument types that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4011 | /// contain an unexpanded parameter pack. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4012 | static bool containsAnyUnexpandedParameterPack(const QualType *ArgArray, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4013 | unsigned numArgs) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4014 | for (unsigned Idx = 0; Idx < numArgs; ++Idx) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4015 | if (ArgArray[Idx]->containsUnexpandedParameterPack()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4016 | return true; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4017 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4018 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4019 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4020 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4021 | FunctionProtoType(QualType result, ArrayRef<QualType> params, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4022 | QualType canonical, const ExtProtoInfo &epi); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4023 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4024 | /// This struct is returned by getExceptionSpecSize and is used to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4025 | /// translate an ExceptionSpecificationType to the number and kind | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4026 | /// of trailing objects related to the exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4027 | struct ExceptionSpecSizeHolder { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4028 | unsigned NumExceptionType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4029 | unsigned NumExprPtr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4030 | unsigned NumFunctionDeclPtr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4031 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4032 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4033 | /// Return the number and kind of trailing objects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4034 | /// related to the exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4035 | static ExceptionSpecSizeHolder | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4036 | getExceptionSpecSize(ExceptionSpecificationType EST, unsigned NumExceptions) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4037 | switch (EST) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4038 | case EST_None: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4039 | case EST_DynamicNone: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4040 | case EST_MSAny: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4041 | case EST_BasicNoexcept: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4042 | case EST_Unparsed: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4043 | case EST_NoThrow: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4044 | return {0, 0, 0}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4045 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4046 | case EST_Dynamic: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4047 | return {NumExceptions, 0, 0}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4048 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4049 | case EST_DependentNoexcept: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4050 | case EST_NoexceptFalse: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4051 | case EST_NoexceptTrue: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4052 | return {0, 1, 0}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4053 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4054 | case EST_Uninstantiated: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4055 | return {0, 0, 2}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4056 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4057 | case EST_Unevaluated: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4058 | return {0, 0, 1}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4059 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4060 | llvm_unreachable("bad exception specification kind")::llvm::llvm_unreachable_internal("bad exception specification kind" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4060); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4061 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4062 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4063 | /// Return the number and kind of trailing objects | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4064 | /// related to the exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4065 | ExceptionSpecSizeHolder getExceptionSpecSize() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4066 | return getExceptionSpecSize(getExceptionSpecType(), getNumExceptions()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4067 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4068 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4069 | /// Whether the trailing FunctionTypeExtraBitfields is present. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4070 | static bool hasExtraBitfields(ExceptionSpecificationType EST) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4071 | // If the exception spec type is EST_Dynamic then we have > 0 exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4072 | // types and the exact number is stored in FunctionTypeExtraBitfields. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4073 | return EST == EST_Dynamic; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4074 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4075 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4076 | /// Whether the trailing FunctionTypeExtraBitfields is present. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4077 | bool hasExtraBitfields() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4078 | return hasExtraBitfields(getExceptionSpecType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4079 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4080 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4081 | bool hasExtQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4082 | return FunctionTypeBits.HasExtQuals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4083 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4084 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4085 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4086 | unsigned getNumParams() const { return FunctionTypeBits.NumParams; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4087 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4088 | QualType getParamType(unsigned i) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4089 | assert(i < getNumParams() && "invalid parameter index")((i < getNumParams() && "invalid parameter index") ? static_cast<void> (0) : __assert_fail ("i < getNumParams() && \"invalid parameter index\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4089, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4090 | return param_type_begin()[i]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4091 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4092 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4093 | ArrayRef<QualType> getParamTypes() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4094 | return llvm::makeArrayRef(param_type_begin(), param_type_end()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4095 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4096 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4097 | ExtProtoInfo getExtProtoInfo() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4098 | ExtProtoInfo EPI; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4099 | EPI.ExtInfo = getExtInfo(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4100 | EPI.Variadic = isVariadic(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4101 | EPI.EllipsisLoc = getEllipsisLoc(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4102 | EPI.HasTrailingReturn = hasTrailingReturn(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4103 | EPI.ExceptionSpec = getExceptionSpecInfo(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4104 | EPI.TypeQuals = getMethodQuals(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4105 | EPI.RefQualifier = getRefQualifier(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4106 | EPI.ExtParameterInfos = getExtParameterInfosOrNull(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4107 | return EPI; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4108 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4109 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4110 | /// Get the kind of exception specification on this function. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4111 | ExceptionSpecificationType getExceptionSpecType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4112 | return static_cast<ExceptionSpecificationType>( | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4113 | FunctionTypeBits.ExceptionSpecType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4114 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4115 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4116 | /// Return whether this function has any kind of exception spec. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4117 | bool hasExceptionSpec() const { return getExceptionSpecType() != EST_None; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4118 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4119 | /// Return whether this function has a dynamic (throw) exception spec. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4120 | bool hasDynamicExceptionSpec() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4121 | return isDynamicExceptionSpec(getExceptionSpecType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4122 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4123 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4124 | /// Return whether this function has a noexcept exception spec. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4125 | bool hasNoexceptExceptionSpec() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4126 | return isNoexceptExceptionSpec(getExceptionSpecType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4127 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4128 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4129 | /// Return whether this function has a dependent exception spec. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4130 | bool hasDependentExceptionSpec() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4131 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4132 | /// Return whether this function has an instantiation-dependent exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4133 | /// spec. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4134 | bool hasInstantiationDependentExceptionSpec() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4135 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4136 | /// Return all the available information about this type's exception spec. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4137 | ExceptionSpecInfo getExceptionSpecInfo() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4138 | ExceptionSpecInfo Result; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4139 | Result.Type = getExceptionSpecType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4140 | if (Result.Type == EST_Dynamic) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4141 | Result.Exceptions = exceptions(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4142 | } else if (isComputedNoexcept(Result.Type)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4143 | Result.NoexceptExpr = getNoexceptExpr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4144 | } else if (Result.Type == EST_Uninstantiated) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4145 | Result.SourceDecl = getExceptionSpecDecl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4146 | Result.SourceTemplate = getExceptionSpecTemplate(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4147 | } else if (Result.Type == EST_Unevaluated) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4148 | Result.SourceDecl = getExceptionSpecDecl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4149 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4150 | return Result; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4151 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4152 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4153 | /// Return the number of types in the exception specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4154 | unsigned getNumExceptions() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4155 | return getExceptionSpecType() == EST_Dynamic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4156 | ? getTrailingObjects<FunctionTypeExtraBitfields>() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4157 | ->NumExceptionType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4158 | : 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4159 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4160 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4161 | /// Return the ith exception type, where 0 <= i < getNumExceptions(). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4162 | QualType getExceptionType(unsigned i) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4163 | assert(i < getNumExceptions() && "Invalid exception number!")((i < getNumExceptions() && "Invalid exception number!" ) ? static_cast<void> (0) : __assert_fail ("i < getNumExceptions() && \"Invalid exception number!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4163, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4164 | return exception_begin()[i]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4165 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4166 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4167 | /// Return the expression inside noexcept(expression), or a null pointer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4168 | /// if there is none (because the exception spec is not of this form). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4169 | Expr *getNoexceptExpr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4170 | if (!isComputedNoexcept(getExceptionSpecType())) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4171 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4172 | return *getTrailingObjects<Expr *>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4173 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4174 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4175 | /// If this function type has an exception specification which hasn't | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4176 | /// been determined yet (either because it has not been evaluated or because | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4177 | /// it has not been instantiated), this is the function whose exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4178 | /// specification is represented by this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4179 | FunctionDecl *getExceptionSpecDecl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4180 | if (getExceptionSpecType() != EST_Uninstantiated && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4181 | getExceptionSpecType() != EST_Unevaluated) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4182 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4183 | return getTrailingObjects<FunctionDecl *>()[0]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4184 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4185 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4186 | /// If this function type has an uninstantiated exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4187 | /// specification, this is the function whose exception specification | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4188 | /// should be instantiated to find the exception specification for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4189 | /// this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4190 | FunctionDecl *getExceptionSpecTemplate() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4191 | if (getExceptionSpecType() != EST_Uninstantiated) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4192 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4193 | return getTrailingObjects<FunctionDecl *>()[1]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4194 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4195 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4196 | /// Determine whether this function type has a non-throwing exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4197 | /// specification. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4198 | CanThrowResult canThrow() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4199 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4200 | /// Determine whether this function type has a non-throwing exception | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4201 | /// specification. If this depends on template arguments, returns | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4202 | /// \c ResultIfDependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4203 | bool isNothrow(bool ResultIfDependent = false) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4204 | return ResultIfDependent ? canThrow() != CT_Can : canThrow() == CT_Cannot; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4205 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4206 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4207 | /// Whether this function prototype is variadic. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4208 | bool isVariadic() const { return FunctionTypeBits.Variadic; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4209 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4210 | SourceLocation getEllipsisLoc() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4211 | return isVariadic() ? *getTrailingObjects<SourceLocation>() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4212 | : SourceLocation(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4213 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4214 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4215 | /// Determines whether this function prototype contains a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4216 | /// parameter pack at the end. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4217 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4218 | /// A function template whose last parameter is a parameter pack can be | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4219 | /// called with an arbitrary number of arguments, much like a variadic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4220 | /// function. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4221 | bool isTemplateVariadic() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4222 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4223 | /// Whether this function prototype has a trailing return type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4224 | bool hasTrailingReturn() const { return FunctionTypeBits.HasTrailingReturn; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4225 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4226 | Qualifiers getMethodQuals() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4227 | if (hasExtQualifiers()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4228 | return *getTrailingObjects<Qualifiers>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4229 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4230 | return getFastTypeQuals(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4231 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4232 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4233 | /// Retrieve the ref-qualifier associated with this function type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4234 | RefQualifierKind getRefQualifier() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4235 | return static_cast<RefQualifierKind>(FunctionTypeBits.RefQualifier); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4236 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4237 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4238 | using param_type_iterator = const QualType *; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4239 | using param_type_range = llvm::iterator_range<param_type_iterator>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4240 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4241 | param_type_range param_types() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4242 | return param_type_range(param_type_begin(), param_type_end()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4243 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4244 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4245 | param_type_iterator param_type_begin() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4246 | return getTrailingObjects<QualType>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4247 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4248 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4249 | param_type_iterator param_type_end() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4250 | return param_type_begin() + getNumParams(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4251 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4252 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4253 | using exception_iterator = const QualType *; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4254 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4255 | ArrayRef<QualType> exceptions() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4256 | return llvm::makeArrayRef(exception_begin(), exception_end()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4257 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4258 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4259 | exception_iterator exception_begin() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4260 | return reinterpret_cast<exception_iterator>( | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4261 | getTrailingObjects<ExceptionType>()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4262 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4263 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4264 | exception_iterator exception_end() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4265 | return exception_begin() + getNumExceptions(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4266 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4267 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4268 | /// Is there any interesting extra information for any of the parameters | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4269 | /// of this function type? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4270 | bool hasExtParameterInfos() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4271 | return FunctionTypeBits.HasExtParameterInfos; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4272 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4273 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4274 | ArrayRef<ExtParameterInfo> getExtParameterInfos() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4275 | assert(hasExtParameterInfos())((hasExtParameterInfos()) ? static_cast<void> (0) : __assert_fail ("hasExtParameterInfos()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4275, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4276 | return ArrayRef<ExtParameterInfo>(getTrailingObjects<ExtParameterInfo>(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4277 | getNumParams()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4278 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4279 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4280 | /// Return a pointer to the beginning of the array of extra parameter | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4281 | /// information, if present, or else null if none of the parameters | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4282 | /// carry it. This is equivalent to getExtProtoInfo().ExtParameterInfos. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4283 | const ExtParameterInfo *getExtParameterInfosOrNull() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4284 | if (!hasExtParameterInfos()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4285 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4286 | return getTrailingObjects<ExtParameterInfo>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4287 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4288 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4289 | ExtParameterInfo getExtParameterInfo(unsigned I) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4290 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4290, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4291 | if (hasExtParameterInfos()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4292 | return getTrailingObjects<ExtParameterInfo>()[I]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4293 | return ExtParameterInfo(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4294 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4295 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4296 | ParameterABI getParameterABI(unsigned I) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4297 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4297, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4298 | if (hasExtParameterInfos()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4299 | return getTrailingObjects<ExtParameterInfo>()[I].getABI(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4300 | return ParameterABI::Ordinary; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4301 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4302 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4303 | bool isParamConsumed(unsigned I) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4304 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4304, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4305 | if (hasExtParameterInfos()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4306 | return getTrailingObjects<ExtParameterInfo>()[I].isConsumed(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4307 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4308 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4309 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4310 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4311 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4312 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4313 | void printExceptionSpecification(raw_ostream &OS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4314 | const PrintingPolicy &Policy) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4315 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4316 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4317 | return T->getTypeClass() == FunctionProto; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4318 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4319 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4320 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4321 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4322 | param_type_iterator ArgTys, unsigned NumArgs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4323 | const ExtProtoInfo &EPI, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4324 | bool Canonical); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4325 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4326 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4327 | /// Represents the dependent type named by a dependently-scoped | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4328 | /// typename using declaration, e.g. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4329 | /// using typename Base<T>::foo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4330 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4331 | /// Template instantiation turns these into the underlying type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4332 | class UnresolvedUsingType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4333 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4334 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4335 | UnresolvedUsingTypenameDecl *Decl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4336 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4337 | UnresolvedUsingType(const UnresolvedUsingTypenameDecl *D) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4338 | : Type(UnresolvedUsing, QualType(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4339 | TypeDependence::DependentInstantiation), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4340 | Decl(const_cast<UnresolvedUsingTypenameDecl *>(D)) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4341 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4342 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4343 | UnresolvedUsingTypenameDecl *getDecl() const { return Decl; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4344 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4345 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4346 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4347 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4348 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4349 | return T->getTypeClass() == UnresolvedUsing; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4350 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4351 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4352 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4353 | return Profile(ID, Decl); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4354 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4355 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4356 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4357 | UnresolvedUsingTypenameDecl *D) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4358 | ID.AddPointer(D); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4359 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4360 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4361 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4362 | class TypedefType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4363 | TypedefNameDecl *Decl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4364 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4365 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4366 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4367 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4368 | TypedefType(TypeClass tc, const TypedefNameDecl *D, QualType can); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4369 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4370 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4371 | TypedefNameDecl *getDecl() const { return Decl; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4372 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4373 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4374 | QualType desugar() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4375 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4376 | static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4377 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4378 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4379 | /// Sugar type that represents a type that was qualified by a qualifier written | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4380 | /// as a macro invocation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4381 | class MacroQualifiedType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4382 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4383 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4384 | QualType UnderlyingTy; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4385 | const IdentifierInfo *MacroII; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4386 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4387 | MacroQualifiedType(QualType UnderlyingTy, QualType CanonTy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4388 | const IdentifierInfo *MacroII) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4389 | : Type(MacroQualified, CanonTy, UnderlyingTy->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4390 | UnderlyingTy(UnderlyingTy), MacroII(MacroII) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4391 | assert(isa<AttributedType>(UnderlyingTy) &&((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types." ) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4392, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4392 | "Expected a macro qualified type to only wrap attributed types.")((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types." ) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4392, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4393 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4394 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4395 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4396 | const IdentifierInfo *getMacroIdentifier() const { return MacroII; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4397 | QualType getUnderlyingType() const { return UnderlyingTy; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4398 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4399 | /// Return this attributed type's modified type with no qualifiers attached to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4400 | /// it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4401 | QualType getModifiedType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4402 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4403 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4404 | QualType desugar() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4405 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4406 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4407 | return T->getTypeClass() == MacroQualified; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4408 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4409 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4410 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4411 | /// Represents a `typeof` (or __typeof__) expression (a GCC extension). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4412 | class TypeOfExprType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4413 | Expr *TOExpr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4414 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4415 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4416 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4417 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4418 | TypeOfExprType(Expr *E, QualType can = QualType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4419 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4420 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4421 | Expr *getUnderlyingExpr() const { return TOExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4422 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4423 | /// Remove a single level of sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4424 | QualType desugar() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4425 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4426 | /// Returns whether this type directly provides sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4427 | bool isSugared() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4428 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4429 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4430 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4431 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4432 | /// Internal representation of canonical, dependent | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4433 | /// `typeof(expr)` types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4434 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4435 | /// This class is used internally by the ASTContext to manage | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4436 | /// canonical, dependent types, only. Clients will only see instances | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4437 | /// of this class via TypeOfExprType nodes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4438 | class DependentTypeOfExprType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4439 | : public TypeOfExprType, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4440 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4441 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4442 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4443 | DependentTypeOfExprType(const ASTContext &Context, Expr *E) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4444 | : TypeOfExprType(E), Context(Context) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4445 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4446 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4447 | Profile(ID, Context, getUnderlyingExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4448 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4449 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4450 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4451 | Expr *E); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4452 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4453 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4454 | /// Represents `typeof(type)`, a GCC extension. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4455 | class TypeOfType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4456 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4457 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4458 | QualType TOType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4459 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4460 | TypeOfType(QualType T, QualType can) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4461 | : Type(TypeOf, can, T->getDependence()), TOType(T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4462 | assert(!isa<TypedefType>(can) && "Invalid canonical type")((!isa<TypedefType>(can) && "Invalid canonical type" ) ? static_cast<void> (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4462, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4463 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4464 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4465 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4466 | QualType getUnderlyingType() const { return TOType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4467 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4468 | /// Remove a single level of sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4469 | QualType desugar() const { return getUnderlyingType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4470 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4471 | /// Returns whether this type directly provides sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4472 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4473 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4474 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4475 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4476 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4477 | /// Represents the type `decltype(expr)` (C++11). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4478 | class DecltypeType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4479 | Expr *E; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4480 | QualType UnderlyingType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4481 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4482 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4483 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4484 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4485 | DecltypeType(Expr *E, QualType underlyingType, QualType can = QualType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4486 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4487 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4488 | Expr *getUnderlyingExpr() const { return E; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4489 | QualType getUnderlyingType() const { return UnderlyingType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4490 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4491 | /// Remove a single level of sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4492 | QualType desugar() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4493 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4494 | /// Returns whether this type directly provides sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4495 | bool isSugared() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4496 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4497 | static bool classof(const Type *T) { return T->getTypeClass() == Decltype; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4498 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4499 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4500 | /// Internal representation of canonical, dependent | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4501 | /// decltype(expr) types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4502 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4503 | /// This class is used internally by the ASTContext to manage | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4504 | /// canonical, dependent types, only. Clients will only see instances | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4505 | /// of this class via DecltypeType nodes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4506 | class DependentDecltypeType : public DecltypeType, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4507 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4508 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4509 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4510 | DependentDecltypeType(const ASTContext &Context, Expr *E); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4511 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4512 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4513 | Profile(ID, Context, getUnderlyingExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4514 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4515 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4516 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4517 | Expr *E); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4518 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4519 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4520 | /// A unary type transform, which is a type constructed from another. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4521 | class UnaryTransformType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4522 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4523 | enum UTTKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4524 | EnumUnderlyingType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4525 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4526 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4527 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4528 | /// The untransformed type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4529 | QualType BaseType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4530 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4531 | /// The transformed type if not dependent, otherwise the same as BaseType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4532 | QualType UnderlyingType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4533 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4534 | UTTKind UKind; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4535 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4536 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4537 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4538 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4539 | UnaryTransformType(QualType BaseTy, QualType UnderlyingTy, UTTKind UKind, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4540 | QualType CanonicalTy); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4541 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4542 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4543 | bool isSugared() const { return !isDependentType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4544 | QualType desugar() const { return UnderlyingType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4545 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4546 | QualType getUnderlyingType() const { return UnderlyingType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4547 | QualType getBaseType() const { return BaseType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4548 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4549 | UTTKind getUTTKind() const { return UKind; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4550 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4551 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4552 | return T->getTypeClass() == UnaryTransform; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4553 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4554 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4555 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4556 | /// Internal representation of canonical, dependent | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4557 | /// __underlying_type(type) types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4558 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4559 | /// This class is used internally by the ASTContext to manage | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4560 | /// canonical, dependent types, only. Clients will only see instances | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4561 | /// of this class via UnaryTransformType nodes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4562 | class DependentUnaryTransformType : public UnaryTransformType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4563 | public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4564 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4565 | DependentUnaryTransformType(const ASTContext &C, QualType BaseType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4566 | UTTKind UKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4567 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4568 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4569 | Profile(ID, getBaseType(), getUTTKind()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4570 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4571 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4572 | static void Profile(llvm::FoldingSetNodeID &ID, QualType BaseType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4573 | UTTKind UKind) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4574 | ID.AddPointer(BaseType.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4575 | ID.AddInteger((unsigned)UKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4576 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4577 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4578 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4579 | class TagType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4580 | friend class ASTReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4581 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4582 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4583 | /// Stores the TagDecl associated with this type. The decl may point to any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4584 | /// TagDecl that declares the entity. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4585 | TagDecl *decl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4586 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4587 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4588 | TagType(TypeClass TC, const TagDecl *D, QualType can); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4589 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4590 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4591 | TagDecl *getDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4592 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4593 | /// Determines whether this type is in the process of being defined. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4594 | bool isBeingDefined() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4595 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4596 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4597 | return T->getTypeClass() == Enum || T->getTypeClass() == Record; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4598 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4599 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4600 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4601 | /// A helper class that allows the use of isa/cast/dyncast | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4602 | /// to detect TagType objects of structs/unions/classes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4603 | class RecordType : public TagType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4604 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4605 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4606 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4607 | explicit RecordType(const RecordDecl *D) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4608 | : TagType(Record, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4609 | explicit RecordType(TypeClass TC, RecordDecl *D) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4610 | : TagType(TC, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4611 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4612 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4613 | RecordDecl *getDecl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4614 | return reinterpret_cast<RecordDecl*>(TagType::getDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4615 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4616 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4617 | /// Recursively check all fields in the record for const-ness. If any field | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4618 | /// is declared const, return true. Otherwise, return false. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4619 | bool hasConstFields() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4620 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4621 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4622 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4623 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4624 | static bool classof(const Type *T) { return T->getTypeClass() == Record; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4625 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4626 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4627 | /// A helper class that allows the use of isa/cast/dyncast | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4628 | /// to detect TagType objects of enums. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4629 | class EnumType : public TagType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4630 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4631 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4632 | explicit EnumType(const EnumDecl *D) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4633 | : TagType(Enum, reinterpret_cast<const TagDecl*>(D), QualType()) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4634 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4635 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4636 | EnumDecl *getDecl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4637 | return reinterpret_cast<EnumDecl*>(TagType::getDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4638 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4639 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4640 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4641 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4642 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4643 | static bool classof(const Type *T) { return T->getTypeClass() == Enum; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4644 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4645 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4646 | /// An attributed type is a type to which a type attribute has been applied. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4647 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4648 | /// The "modified type" is the fully-sugared type to which the attributed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4649 | /// type was applied; generally it is not canonically equivalent to the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4650 | /// attributed type. The "equivalent type" is the minimally-desugared type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4651 | /// which the type is canonically equivalent to. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4652 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4653 | /// For example, in the following attributed type: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4654 | /// int32_t __attribute__((vector_size(16))) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4655 | /// - the modified type is the TypedefType for int32_t | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4656 | /// - the equivalent type is VectorType(16, int32_t) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4657 | /// - the canonical type is VectorType(16, int) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4658 | class AttributedType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4659 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4660 | using Kind = attr::Kind; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4661 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4662 | private: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4663 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4664 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4665 | QualType ModifiedType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4666 | QualType EquivalentType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4667 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4668 | AttributedType(QualType canon, attr::Kind attrKind, QualType modified, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4669 | QualType equivalent) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4670 | : Type(Attributed, canon, equivalent->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4671 | ModifiedType(modified), EquivalentType(equivalent) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4672 | AttributedTypeBits.AttrKind = attrKind; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4673 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4674 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4675 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4676 | Kind getAttrKind() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4677 | return static_cast<Kind>(AttributedTypeBits.AttrKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4678 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4679 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4680 | QualType getModifiedType() const { return ModifiedType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4681 | QualType getEquivalentType() const { return EquivalentType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4682 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4683 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4684 | QualType desugar() const { return getEquivalentType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4685 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4686 | /// Does this attribute behave like a type qualifier? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4687 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4688 | /// A type qualifier adjusts a type to provide specialized rules for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4689 | /// a specific object, like the standard const and volatile qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4690 | /// This includes attributes controlling things like nullability, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4691 | /// address spaces, and ARC ownership. The value of the object is still | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4692 | /// largely described by the modified type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4693 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4694 | /// In contrast, many type attributes "rewrite" their modified type to | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4695 | /// produce a fundamentally different type, not necessarily related in any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4696 | /// formalizable way to the original type. For example, calling convention | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4697 | /// and vector attributes are not simple type qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4698 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4699 | /// Type qualifiers are often, but not always, reflected in the canonical | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4700 | /// type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4701 | bool isQualifier() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4702 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4703 | bool isMSTypeSpec() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4704 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4705 | bool isCallingConv() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4706 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4707 | llvm::Optional<NullabilityKind> getImmediateNullability() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4708 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4709 | /// Retrieve the attribute kind corresponding to the given | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4710 | /// nullability kind. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4711 | static Kind getNullabilityAttrKind(NullabilityKind kind) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4712 | switch (kind) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4713 | case NullabilityKind::NonNull: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4714 | return attr::TypeNonNull; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4715 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4716 | case NullabilityKind::Nullable: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4717 | return attr::TypeNullable; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4718 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4719 | case NullabilityKind::Unspecified: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4720 | return attr::TypeNullUnspecified; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4721 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4722 | llvm_unreachable("Unknown nullability kind.")::llvm::llvm_unreachable_internal("Unknown nullability kind." , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 4722); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4723 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4724 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4725 | /// Strip off the top-level nullability annotation on the given | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4726 | /// type, if it's there. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4727 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4728 | /// \param T The type to strip. If the type is exactly an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4729 | /// AttributedType specifying nullability (without looking through | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4730 | /// type sugar), the nullability is returned and this type changed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4731 | /// to the underlying modified type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4732 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4733 | /// \returns the top-level nullability, if present. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4734 | static Optional<NullabilityKind> stripOuterNullability(QualType &T); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4735 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4736 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4737 | Profile(ID, getAttrKind(), ModifiedType, EquivalentType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4738 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4739 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4740 | static void Profile(llvm::FoldingSetNodeID &ID, Kind attrKind, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4741 | QualType modified, QualType equivalent) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4742 | ID.AddInteger(attrKind); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4743 | ID.AddPointer(modified.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4744 | ID.AddPointer(equivalent.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4745 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4746 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4747 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4748 | return T->getTypeClass() == Attributed; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4749 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4750 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4751 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4752 | class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4753 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4754 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4755 | // Helper data collector for canonical types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4756 | struct CanonicalTTPTInfo { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4757 | unsigned Depth : 15; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4758 | unsigned ParameterPack : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4759 | unsigned Index : 16; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4760 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4761 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4762 | union { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4763 | // Info for the canonical type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4764 | CanonicalTTPTInfo CanTTPTInfo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4765 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4766 | // Info for the non-canonical type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4767 | TemplateTypeParmDecl *TTPDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4768 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4769 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4770 | /// Build a non-canonical type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4771 | TemplateTypeParmType(TemplateTypeParmDecl *TTPDecl, QualType Canon) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4772 | : Type(TemplateTypeParm, Canon, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4773 | TypeDependence::DependentInstantiation | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4774 | (Canon->getDependence() & TypeDependence::UnexpandedPack)), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4775 | TTPDecl(TTPDecl) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4776 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4777 | /// Build the canonical type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4778 | TemplateTypeParmType(unsigned D, unsigned I, bool PP) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4779 | : Type(TemplateTypeParm, QualType(this, 0), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4780 | TypeDependence::DependentInstantiation | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4781 | (PP ? TypeDependence::UnexpandedPack : TypeDependence::None)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4782 | CanTTPTInfo.Depth = D; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4783 | CanTTPTInfo.Index = I; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4784 | CanTTPTInfo.ParameterPack = PP; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4785 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4786 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4787 | const CanonicalTTPTInfo& getCanTTPTInfo() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4788 | QualType Can = getCanonicalTypeInternal(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4789 | return Can->castAs<TemplateTypeParmType>()->CanTTPTInfo; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4790 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4791 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4792 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4793 | unsigned getDepth() const { return getCanTTPTInfo().Depth; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4794 | unsigned getIndex() const { return getCanTTPTInfo().Index; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4795 | bool isParameterPack() const { return getCanTTPTInfo().ParameterPack; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4796 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4797 | TemplateTypeParmDecl *getDecl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4798 | return isCanonicalUnqualified() ? nullptr : TTPDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4799 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4800 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4801 | IdentifierInfo *getIdentifier() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4802 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4803 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4804 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4805 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4806 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4807 | Profile(ID, getDepth(), getIndex(), isParameterPack(), getDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4808 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4809 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4810 | static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4811 | unsigned Index, bool ParameterPack, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4812 | TemplateTypeParmDecl *TTPDecl) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4813 | ID.AddInteger(Depth); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4814 | ID.AddInteger(Index); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4815 | ID.AddBoolean(ParameterPack); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4816 | ID.AddPointer(TTPDecl); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4817 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4818 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4819 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4820 | return T->getTypeClass() == TemplateTypeParm; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4821 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4822 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4823 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4824 | /// Represents the result of substituting a type for a template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4825 | /// type parameter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4826 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4827 | /// Within an instantiated template, all template type parameters have | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4828 | /// been replaced with these. They are used solely to record that a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4829 | /// type was originally written as a template type parameter; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4830 | /// therefore they are never canonical. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4831 | class SubstTemplateTypeParmType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4832 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4833 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4834 | // The original type parameter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4835 | const TemplateTypeParmType *Replaced; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4836 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4837 | SubstTemplateTypeParmType(const TemplateTypeParmType *Param, QualType Canon) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4838 | : Type(SubstTemplateTypeParm, Canon, Canon->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4839 | Replaced(Param) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4840 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4841 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4842 | /// Gets the template parameter that was substituted for. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4843 | const TemplateTypeParmType *getReplacedParameter() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4844 | return Replaced; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4845 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4846 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4847 | /// Gets the type that was substituted for the template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4848 | /// parameter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4849 | QualType getReplacementType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4850 | return getCanonicalTypeInternal(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4851 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4852 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4853 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4854 | QualType desugar() const { return getReplacementType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4855 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4856 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4857 | Profile(ID, getReplacedParameter(), getReplacementType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4858 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4859 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4860 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4861 | const TemplateTypeParmType *Replaced, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4862 | QualType Replacement) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4863 | ID.AddPointer(Replaced); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4864 | ID.AddPointer(Replacement.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4865 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4866 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4867 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4868 | return T->getTypeClass() == SubstTemplateTypeParm; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4869 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4870 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4871 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4872 | /// Represents the result of substituting a set of types for a template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4873 | /// type parameter pack. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4874 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4875 | /// When a pack expansion in the source code contains multiple parameter packs | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4876 | /// and those parameter packs correspond to different levels of template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4877 | /// parameter lists, this type node is used to represent a template type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4878 | /// parameter pack from an outer level, which has already had its argument pack | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4879 | /// substituted but that still lives within a pack expansion that itself | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4880 | /// could not be instantiated. When actually performing a substitution into | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4881 | /// that pack expansion (e.g., when all template parameters have corresponding | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4882 | /// arguments), this type will be replaced with the \c SubstTemplateTypeParmType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4883 | /// at the current pack substitution index. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4884 | class SubstTemplateTypeParmPackType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4885 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4886 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4887 | /// The original type parameter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4888 | const TemplateTypeParmType *Replaced; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4889 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4890 | /// A pointer to the set of template arguments that this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4891 | /// parameter pack is instantiated with. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4892 | const TemplateArgument *Arguments; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4893 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4894 | SubstTemplateTypeParmPackType(const TemplateTypeParmType *Param, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4895 | QualType Canon, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4896 | const TemplateArgument &ArgPack); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4897 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4898 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4899 | IdentifierInfo *getIdentifier() const { return Replaced->getIdentifier(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4900 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4901 | /// Gets the template parameter that was substituted for. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4902 | const TemplateTypeParmType *getReplacedParameter() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4903 | return Replaced; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4904 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4905 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4906 | unsigned getNumArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4907 | return SubstTemplateTypeParmPackTypeBits.NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4908 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4909 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4910 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4911 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4912 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4913 | TemplateArgument getArgumentPack() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4914 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4915 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4916 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4917 | const TemplateTypeParmType *Replaced, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4918 | const TemplateArgument &ArgPack); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4919 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4920 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4921 | return T->getTypeClass() == SubstTemplateTypeParmPack; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4922 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4923 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4924 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4925 | /// Common base class for placeholders for types that get replaced by | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4926 | /// placeholder type deduction: C++11 auto, C++14 decltype(auto), C++17 deduced | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4927 | /// class template types, and constrained type names. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4928 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4929 | /// These types are usually a placeholder for a deduced type. However, before | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4930 | /// the initializer is attached, or (usually) if the initializer is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4931 | /// type-dependent, there is no deduced type and the type is canonical. In | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4932 | /// the latter case, it is also a dependent type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4933 | class DeducedType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4934 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4935 | DeducedType(TypeClass TC, QualType DeducedAsType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4936 | TypeDependence ExtraDependence) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4937 | : Type(TC, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4938 | // FIXME: Retain the sugared deduced type? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4939 | DeducedAsType.isNull() ? QualType(this, 0) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4940 | : DeducedAsType.getCanonicalType(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4941 | ExtraDependence | (DeducedAsType.isNull() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4942 | ? TypeDependence::None | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4943 | : DeducedAsType->getDependence() & | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4944 | ~TypeDependence::VariablyModified)) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4945 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4946 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4947 | bool isSugared() const { return !isCanonicalUnqualified(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4948 | QualType desugar() const { return getCanonicalTypeInternal(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4949 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4950 | /// Get the type deduced for this placeholder type, or null if it's | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4951 | /// either not been deduced or was deduced to a dependent type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4952 | QualType getDeducedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4953 | return !isCanonicalUnqualified() ? getCanonicalTypeInternal() : QualType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4954 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4955 | bool isDeduced() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4956 | return !isCanonicalUnqualified() || isDependentType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4957 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4958 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4959 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4960 | return T->getTypeClass() == Auto || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4961 | T->getTypeClass() == DeducedTemplateSpecialization; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4962 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4963 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4964 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4965 | /// Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4966 | /// by a type-constraint. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4967 | class alignas(8) AutoType : public DeducedType, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4968 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4969 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4970 | ConceptDecl *TypeConstraintConcept; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4971 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4972 | AutoType(QualType DeducedAsType, AutoTypeKeyword Keyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4973 | TypeDependence ExtraDependence, ConceptDecl *CD, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4974 | ArrayRef<TemplateArgument> TypeConstraintArgs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4975 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4976 | const TemplateArgument *getArgBuffer() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4977 | return reinterpret_cast<const TemplateArgument*>(this+1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4978 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4979 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4980 | TemplateArgument *getArgBuffer() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4981 | return reinterpret_cast<TemplateArgument*>(this+1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4982 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4983 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4984 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4985 | /// Retrieve the template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4986 | const TemplateArgument *getArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4987 | return getArgBuffer(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4988 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4989 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4990 | /// Retrieve the number of template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4991 | unsigned getNumArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4992 | return AutoTypeBits.NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4993 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4994 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4995 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4996 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4997 | ArrayRef<TemplateArgument> getTypeConstraintArguments() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4998 | return {getArgs(), getNumArgs()}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4999 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5001 | ConceptDecl *getTypeConstraintConcept() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5002 | return TypeConstraintConcept; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5003 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5005 | bool isConstrained() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5006 | return TypeConstraintConcept != nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5007 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5009 | bool isDecltypeAuto() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5010 | return getKeyword() == AutoTypeKeyword::DecltypeAuto; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5011 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5012 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5013 | AutoTypeKeyword getKeyword() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5014 | return (AutoTypeKeyword)AutoTypeBits.Keyword; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5015 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5016 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5017 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5018 | Profile(ID, Context, getDeducedType(), getKeyword(), isDependentType(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5019 | getTypeConstraintConcept(), getTypeConstraintArguments()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5020 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5021 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5022 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5023 | QualType Deduced, AutoTypeKeyword Keyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5024 | bool IsDependent, ConceptDecl *CD, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5025 | ArrayRef<TemplateArgument> Arguments); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5026 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5027 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5028 | return T->getTypeClass() == Auto; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5029 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5030 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5031 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5032 | /// Represents a C++17 deduced template specialization type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5033 | class DeducedTemplateSpecializationType : public DeducedType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5034 | public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5035 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5036 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5037 | /// The name of the template whose arguments will be deduced. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5038 | TemplateName Template; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5039 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5040 | DeducedTemplateSpecializationType(TemplateName Template, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5041 | QualType DeducedAsType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5042 | bool IsDeducedAsDependent) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5043 | : DeducedType(DeducedTemplateSpecialization, DeducedAsType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5044 | toTypeDependence(Template.getDependence()) | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5045 | (IsDeducedAsDependent | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5046 | ? TypeDependence::DependentInstantiation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5047 | : TypeDependence::None)), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5048 | Template(Template) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5049 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5050 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5051 | /// Retrieve the name of the template that we are deducing. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5052 | TemplateName getTemplateName() const { return Template;} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5053 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5054 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5055 | Profile(ID, getTemplateName(), getDeducedType(), isDependentType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5056 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5057 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5058 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName Template, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5059 | QualType Deduced, bool IsDependent) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5060 | Template.Profile(ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5061 | ID.AddPointer(Deduced.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5062 | ID.AddBoolean(IsDependent); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5063 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5064 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5065 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5066 | return T->getTypeClass() == DeducedTemplateSpecialization; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5067 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5068 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5069 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5070 | /// Represents a type template specialization; the template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5071 | /// must be a class template, a type alias template, or a template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5072 | /// template parameter. A template which cannot be resolved to one of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5073 | /// these, e.g. because it is written with a dependent scope | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5074 | /// specifier, is instead represented as a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5075 | /// @c DependentTemplateSpecializationType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5076 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5077 | /// A non-dependent template specialization type is always "sugar", | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5078 | /// typically for a \c RecordType. For example, a class template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5079 | /// specialization type of \c vector<int> will refer to a tag type for | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5080 | /// the instantiation \c std::vector<int, std::allocator<int>> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5081 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5082 | /// Template specializations are dependent if either the template or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5083 | /// any of the template arguments are dependent, in which case the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5084 | /// type may also be canonical. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5085 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5086 | /// Instances of this type are allocated with a trailing array of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5087 | /// TemplateArguments, followed by a QualType representing the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5088 | /// non-canonical aliased type when the template is a type alias | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5089 | /// template. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5090 | class alignas(8) TemplateSpecializationType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5091 | : public Type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5092 | public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5093 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5094 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5095 | /// The name of the template being specialized. This is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5096 | /// either a TemplateName::Template (in which case it is a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5097 | /// ClassTemplateDecl*, a TemplateTemplateParmDecl*, or a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5098 | /// TypeAliasTemplateDecl*), a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5099 | /// TemplateName::SubstTemplateTemplateParmPack, or a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5100 | /// TemplateName::SubstTemplateTemplateParm (in which case the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5101 | /// replacement must, recursively, be one of these). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5102 | TemplateName Template; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5103 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5104 | TemplateSpecializationType(TemplateName T, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5105 | ArrayRef<TemplateArgument> Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5106 | QualType Canon, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5107 | QualType Aliased); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5108 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5109 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5110 | /// Determine whether any of the given template arguments are dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5111 | static bool anyDependentTemplateArguments(ArrayRef<TemplateArgumentLoc> Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5112 | bool &InstantiationDependent); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5113 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5114 | static bool anyDependentTemplateArguments(const TemplateArgumentListInfo &, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5115 | bool &InstantiationDependent); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5116 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5117 | /// True if this template specialization type matches a current | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5118 | /// instantiation in the context in which it is found. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5119 | bool isCurrentInstantiation() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5120 | return isa<InjectedClassNameType>(getCanonicalTypeInternal()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5121 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5122 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5123 | /// Determine if this template specialization type is for a type alias | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5124 | /// template that has been substituted. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5125 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5126 | /// Nearly every template specialization type whose template is an alias | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5127 | /// template will be substituted. However, this is not the case when | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5128 | /// the specialization contains a pack expansion but the template alias | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5129 | /// does not have a corresponding parameter pack, e.g., | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5130 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5131 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5132 | /// template<typename T, typename U, typename V> struct S; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5133 | /// template<typename T, typename U> using A = S<T, int, U>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5134 | /// template<typename... Ts> struct X { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5135 | /// typedef A<Ts...> type; // not a type alias | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5136 | /// }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5137 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5138 | bool isTypeAlias() const { return TemplateSpecializationTypeBits.TypeAlias; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5139 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5140 | /// Get the aliased type, if this is a specialization of a type alias | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5141 | /// template. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5142 | QualType getAliasedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5143 | assert(isTypeAlias() && "not a type alias template specialization")((isTypeAlias() && "not a type alias template specialization" ) ? static_cast<void> (0) : __assert_fail ("isTypeAlias() && \"not a type alias template specialization\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5143, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5144 | return *reinterpret_cast<const QualType*>(end()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5145 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5146 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5147 | using iterator = const TemplateArgument *; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5148 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5149 | iterator begin() const { return getArgs(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5150 | iterator end() const; // defined inline in TemplateBase.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5151 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5152 | /// Retrieve the name of the template that we are specializing. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5153 | TemplateName getTemplateName() const { return Template; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5154 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5155 | /// Retrieve the template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5156 | const TemplateArgument *getArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5157 | return reinterpret_cast<const TemplateArgument *>(this + 1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5158 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5159 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5160 | /// Retrieve the number of template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5161 | unsigned getNumArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5162 | return TemplateSpecializationTypeBits.NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5163 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5164 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5165 | /// Retrieve a specific template argument as a type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5166 | /// \pre \c isArgType(Arg) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5167 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5168 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5169 | ArrayRef<TemplateArgument> template_arguments() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5170 | return {getArgs(), getNumArgs()}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5171 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5172 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5173 | bool isSugared() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5174 | return !isDependentType() || isCurrentInstantiation() || isTypeAlias(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5175 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5176 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5177 | QualType desugar() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5178 | return isTypeAlias() ? getAliasedType() : getCanonicalTypeInternal(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5179 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5180 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5181 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5182 | Profile(ID, Template, template_arguments(), Ctx); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5183 | if (isTypeAlias()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5184 | getAliasedType().Profile(ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5185 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5186 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5187 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName T, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5188 | ArrayRef<TemplateArgument> Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5189 | const ASTContext &Context); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5190 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5191 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5192 | return T->getTypeClass() == TemplateSpecialization; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5193 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5194 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5195 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5196 | /// Print a template argument list, including the '<' and '>' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5197 | /// enclosing the template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5198 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5199 | ArrayRef<TemplateArgument> Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5200 | const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5201 | const TemplateParameterList *TPL = nullptr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5202 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5203 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5204 | ArrayRef<TemplateArgumentLoc> Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5205 | const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5206 | const TemplateParameterList *TPL = nullptr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5207 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5208 | void printTemplateArgumentList(raw_ostream &OS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5209 | const TemplateArgumentListInfo &Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5210 | const PrintingPolicy &Policy, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5211 | const TemplateParameterList *TPL = nullptr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5212 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5213 | /// The injected class name of a C++ class template or class | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5214 | /// template partial specialization. Used to record that a type was | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5215 | /// spelled with a bare identifier rather than as a template-id; the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5216 | /// equivalent for non-templated classes is just RecordType. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5217 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5218 | /// Injected class name types are always dependent. Template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5219 | /// instantiation turns these into RecordTypes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5220 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5221 | /// Injected class name types are always canonical. This works | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5222 | /// because it is impossible to compare an injected class name type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5223 | /// with the corresponding non-injected template type, for the same | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5224 | /// reason that it is impossible to directly compare template | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5225 | /// parameters from different dependent contexts: injected class name | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5226 | /// types can only occur within the scope of a particular templated | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5227 | /// declaration, and within that scope every template specialization | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5228 | /// will canonicalize to the injected class name (when appropriate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5229 | /// according to the rules of the language). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5230 | class InjectedClassNameType : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5231 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5232 | friend class ASTNodeImporter; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5233 | friend class ASTReader; // FIXME: ASTContext::getInjectedClassNameType is not | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5234 | // currently suitable for AST reading, too much | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5235 | // interdependencies. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5236 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5237 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5238 | CXXRecordDecl *Decl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5239 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5240 | /// The template specialization which this type represents. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5241 | /// For example, in | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5242 | /// template <class T> class A { ... }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5243 | /// this is A<T>, whereas in | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5244 | /// template <class X, class Y> class A<B<X,Y> > { ... }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5245 | /// this is A<B<X,Y> >. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5246 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5247 | /// It is always unqualified, always a template specialization type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5248 | /// and always dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5249 | QualType InjectedType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5250 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5251 | InjectedClassNameType(CXXRecordDecl *D, QualType TST) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5252 | : Type(InjectedClassName, QualType(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5253 | TypeDependence::DependentInstantiation), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5254 | Decl(D), InjectedType(TST) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5255 | assert(isa<TemplateSpecializationType>(TST))((isa<TemplateSpecializationType>(TST)) ? static_cast< void> (0) : __assert_fail ("isa<TemplateSpecializationType>(TST)" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5255, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5256 | assert(!TST.hasQualifiers())((!TST.hasQualifiers()) ? static_cast<void> (0) : __assert_fail ("!TST.hasQualifiers()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5256, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5257 | assert(TST->isDependentType())((TST->isDependentType()) ? static_cast<void> (0) : __assert_fail ("TST->isDependentType()", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5257, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5258 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5259 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5260 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5261 | QualType getInjectedSpecializationType() const { return InjectedType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5262 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5263 | const TemplateSpecializationType *getInjectedTST() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5264 | return cast<TemplateSpecializationType>(InjectedType.getTypePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5265 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5266 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5267 | TemplateName getTemplateName() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5268 | return getInjectedTST()->getTemplateName(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5269 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5270 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5271 | CXXRecordDecl *getDecl() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5272 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5273 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5274 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5275 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5276 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5277 | return T->getTypeClass() == InjectedClassName; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5278 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5279 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5280 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5281 | /// The kind of a tag type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5282 | enum TagTypeKind { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5283 | /// The "struct" keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5284 | TTK_Struct, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5285 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5286 | /// The "__interface" keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5287 | TTK_Interface, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5288 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5289 | /// The "union" keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5290 | TTK_Union, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5291 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5292 | /// The "class" keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5293 | TTK_Class, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5294 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5295 | /// The "enum" keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5296 | TTK_Enum | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5297 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5298 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5299 | /// The elaboration keyword that precedes a qualified type name or | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5300 | /// introduces an elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5301 | enum ElaboratedTypeKeyword { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5302 | /// The "struct" keyword introduces the elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5303 | ETK_Struct, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5304 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5305 | /// The "__interface" keyword introduces the elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5306 | ETK_Interface, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5307 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5308 | /// The "union" keyword introduces the elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5309 | ETK_Union, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5310 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5311 | /// The "class" keyword introduces the elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5312 | ETK_Class, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5313 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5314 | /// The "enum" keyword introduces the elaborated-type-specifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5315 | ETK_Enum, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5316 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5317 | /// The "typename" keyword precedes the qualified type name, e.g., | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5318 | /// \c typename T::type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5319 | ETK_Typename, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5320 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5321 | /// No keyword precedes the qualified type name. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5322 | ETK_None | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5323 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5324 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5325 | /// A helper class for Type nodes having an ElaboratedTypeKeyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5326 | /// The keyword in stored in the free bits of the base class. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5327 | /// Also provides a few static helpers for converting and printing | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5328 | /// elaborated type keyword and tag type kind enumerations. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5329 | class TypeWithKeyword : public Type { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5330 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5331 | TypeWithKeyword(ElaboratedTypeKeyword Keyword, TypeClass tc, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5332 | QualType Canonical, TypeDependence Dependence) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5333 | : Type(tc, Canonical, Dependence) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5334 | TypeWithKeywordBits.Keyword = Keyword; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5335 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5336 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5337 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5338 | ElaboratedTypeKeyword getKeyword() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5339 | return static_cast<ElaboratedTypeKeyword>(TypeWithKeywordBits.Keyword); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5340 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5341 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5342 | /// Converts a type specifier (DeclSpec::TST) into an elaborated type keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5343 | static ElaboratedTypeKeyword getKeywordForTypeSpec(unsigned TypeSpec); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5344 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5345 | /// Converts a type specifier (DeclSpec::TST) into a tag type kind. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5346 | /// It is an error to provide a type specifier which *isn't* a tag kind here. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5347 | static TagTypeKind getTagTypeKindForTypeSpec(unsigned TypeSpec); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5348 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5349 | /// Converts a TagTypeKind into an elaborated type keyword. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5350 | static ElaboratedTypeKeyword getKeywordForTagTypeKind(TagTypeKind Tag); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5351 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5352 | /// Converts an elaborated type keyword into a TagTypeKind. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5353 | /// It is an error to provide an elaborated type keyword | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5354 | /// which *isn't* a tag kind here. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5355 | static TagTypeKind getTagTypeKindForKeyword(ElaboratedTypeKeyword Keyword); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5356 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5357 | static bool KeywordIsTagTypeKind(ElaboratedTypeKeyword Keyword); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5358 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5359 | static StringRef getKeywordName(ElaboratedTypeKeyword Keyword); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5360 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5361 | static StringRef getTagTypeKindName(TagTypeKind Kind) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5362 | return getKeywordName(getKeywordForTagTypeKind(Kind)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5363 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5364 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5365 | class CannotCastToThisType {}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5366 | static CannotCastToThisType classof(const Type *); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5367 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5368 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5369 | /// Represents a type that was referred to using an elaborated type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5370 | /// keyword, e.g., struct S, or via a qualified name, e.g., N::M::type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5371 | /// or both. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5372 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5373 | /// This type is used to keep track of a type name as written in the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5374 | /// source code, including tag keywords and any nested-name-specifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5375 | /// The type itself is always "sugar", used to express what was written | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5376 | /// in the source code but containing no additional semantic information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5377 | class ElaboratedType final | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5378 | : public TypeWithKeyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5379 | public llvm::FoldingSetNode, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5380 | private llvm::TrailingObjects<ElaboratedType, TagDecl *> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5381 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5382 | friend TrailingObjects; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5383 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5384 | /// The nested name specifier containing the qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5385 | NestedNameSpecifier *NNS; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5386 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5387 | /// The type that this qualified name refers to. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5388 | QualType NamedType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5389 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5390 | /// The (re)declaration of this tag type owned by this occurrence is stored | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5391 | /// as a trailing object if there is one. Use getOwnedTagDecl to obtain | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5392 | /// it, or obtain a null pointer if there is none. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5393 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5394 | ElaboratedType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5395 | QualType NamedType, QualType CanonType, TagDecl *OwnedTagDecl) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5396 | : TypeWithKeyword(Keyword, Elaborated, CanonType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5397 | NamedType->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5398 | NNS(NNS), NamedType(NamedType) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5399 | ElaboratedTypeBits.HasOwnedTagDecl = false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5400 | if (OwnedTagDecl) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5401 | ElaboratedTypeBits.HasOwnedTagDecl = true; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5402 | *getTrailingObjects<TagDecl *>() = OwnedTagDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5403 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5404 | assert(!(Keyword == ETK_None && NNS == nullptr) &&((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5406, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5405 | "ElaboratedType cannot have elaborated type keyword "((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5406, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5406 | "and name qualifier both null.")((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5406, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5407 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5408 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5409 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5410 | /// Retrieve the qualification on this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5411 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5412 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5413 | /// Retrieve the type named by the qualified-id. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5414 | QualType getNamedType() const { return NamedType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5415 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5416 | /// Remove a single level of sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5417 | QualType desugar() const { return getNamedType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5418 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5419 | /// Returns whether this type directly provides sugar. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5420 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5421 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5422 | /// Return the (re)declaration of this type owned by this occurrence of this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5423 | /// type, or nullptr if there is none. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5424 | TagDecl *getOwnedTagDecl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5425 | return ElaboratedTypeBits.HasOwnedTagDecl ? *getTrailingObjects<TagDecl *>() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5426 | : nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5427 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5428 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5429 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5430 | Profile(ID, getKeyword(), NNS, NamedType, getOwnedTagDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5431 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5432 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5433 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5434 | NestedNameSpecifier *NNS, QualType NamedType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5435 | TagDecl *OwnedTagDecl) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5436 | ID.AddInteger(Keyword); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5437 | ID.AddPointer(NNS); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5438 | NamedType.Profile(ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5439 | ID.AddPointer(OwnedTagDecl); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5440 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5441 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5442 | static bool classof(const Type *T) { return T->getTypeClass() == Elaborated; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5443 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5444 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5445 | /// Represents a qualified type name for which the type name is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5446 | /// dependent. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5447 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5448 | /// DependentNameType represents a class of dependent types that involve a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5449 | /// possibly dependent nested-name-specifier (e.g., "T::") followed by a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5450 | /// name of a type. The DependentNameType may start with a "typename" (for a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5451 | /// typename-specifier), "class", "struct", "union", or "enum" (for a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5452 | /// dependent elaborated-type-specifier), or nothing (in contexts where we | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5453 | /// know that we must be referring to a type, e.g., in a base class specifier). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5454 | /// Typically the nested-name-specifier is dependent, but in MSVC compatibility | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5455 | /// mode, this type is used with non-dependent names to delay name lookup until | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5456 | /// instantiation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5457 | class DependentNameType : public TypeWithKeyword, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5458 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5459 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5460 | /// The nested name specifier containing the qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5461 | NestedNameSpecifier *NNS; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5462 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5463 | /// The type that this typename specifier refers to. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5464 | const IdentifierInfo *Name; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5465 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5466 | DependentNameType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5467 | const IdentifierInfo *Name, QualType CanonType) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5468 | : TypeWithKeyword(Keyword, DependentName, CanonType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5469 | TypeDependence::DependentInstantiation | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5470 | toTypeDependence(NNS->getDependence())), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5471 | NNS(NNS), Name(Name) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5472 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5473 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5474 | /// Retrieve the qualification on this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5475 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5476 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5477 | /// Retrieve the type named by the typename specifier as an identifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5478 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5479 | /// This routine will return a non-NULL identifier pointer when the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5480 | /// form of the original typename was terminated by an identifier, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5481 | /// e.g., "typename T::type". | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5482 | const IdentifierInfo *getIdentifier() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5483 | return Name; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5484 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5485 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5486 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5487 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5488 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5489 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5490 | Profile(ID, getKeyword(), NNS, Name); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5491 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5492 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5493 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5494 | NestedNameSpecifier *NNS, const IdentifierInfo *Name) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5495 | ID.AddInteger(Keyword); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5496 | ID.AddPointer(NNS); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5497 | ID.AddPointer(Name); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5498 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5499 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5500 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5501 | return T->getTypeClass() == DependentName; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5502 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5503 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5504 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5505 | /// Represents a template specialization type whose template cannot be | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5506 | /// resolved, e.g. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5507 | /// A<T>::template B<T> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5508 | class alignas(8) DependentTemplateSpecializationType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5509 | : public TypeWithKeyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5510 | public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5511 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5512 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5513 | /// The nested name specifier containing the qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5514 | NestedNameSpecifier *NNS; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5515 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5516 | /// The identifier of the template. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5517 | const IdentifierInfo *Name; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5518 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5519 | DependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5520 | NestedNameSpecifier *NNS, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5521 | const IdentifierInfo *Name, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5522 | ArrayRef<TemplateArgument> Args, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5523 | QualType Canon); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5524 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5525 | const TemplateArgument *getArgBuffer() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5526 | return reinterpret_cast<const TemplateArgument*>(this+1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5527 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5528 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5529 | TemplateArgument *getArgBuffer() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5530 | return reinterpret_cast<TemplateArgument*>(this+1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5531 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5532 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5533 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5534 | NestedNameSpecifier *getQualifier() const { return NNS; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5535 | const IdentifierInfo *getIdentifier() const { return Name; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5536 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5537 | /// Retrieve the template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5538 | const TemplateArgument *getArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5539 | return getArgBuffer(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5540 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5541 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5542 | /// Retrieve the number of template arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5543 | unsigned getNumArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5544 | return DependentTemplateSpecializationTypeBits.NumArgs; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5545 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5546 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5547 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5548 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5549 | ArrayRef<TemplateArgument> template_arguments() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5550 | return {getArgs(), getNumArgs()}; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5551 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5552 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5553 | using iterator = const TemplateArgument *; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5554 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5555 | iterator begin() const { return getArgs(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5556 | iterator end() const; // inline in TemplateBase.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5557 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5558 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5559 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5560 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5561 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5562 | Profile(ID, Context, getKeyword(), NNS, Name, {getArgs(), getNumArgs()}); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5563 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5564 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5565 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5566 | const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5567 | ElaboratedTypeKeyword Keyword, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5568 | NestedNameSpecifier *Qualifier, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5569 | const IdentifierInfo *Name, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5570 | ArrayRef<TemplateArgument> Args); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5571 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5572 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5573 | return T->getTypeClass() == DependentTemplateSpecialization; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5574 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5575 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5576 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5577 | /// Represents a pack expansion of types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5578 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5579 | /// Pack expansions are part of C++11 variadic templates. A pack | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5580 | /// expansion contains a pattern, which itself contains one or more | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5581 | /// "unexpanded" parameter packs. When instantiated, a pack expansion | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5582 | /// produces a series of types, each instantiated from the pattern of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5583 | /// the expansion, where the Ith instantiation of the pattern uses the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5584 | /// Ith arguments bound to each of the unexpanded parameter packs. The | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5585 | /// pack expansion is considered to "expand" these unexpanded | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5586 | /// parameter packs. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5587 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5588 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5589 | /// template<typename ...Types> struct tuple; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5590 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5591 | /// template<typename ...Types> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5592 | /// struct tuple_of_references { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5593 | /// typedef tuple<Types&...> type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5594 | /// }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5595 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5596 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5597 | /// Here, the pack expansion \c Types&... is represented via a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5598 | /// PackExpansionType whose pattern is Types&. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5599 | class PackExpansionType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5600 | friend class ASTContext; // ASTContext creates these | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5601 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5602 | /// The pattern of the pack expansion. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5603 | QualType Pattern; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5604 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5605 | PackExpansionType(QualType Pattern, QualType Canon, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5606 | Optional<unsigned> NumExpansions) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5607 | : Type(PackExpansion, Canon, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5608 | (Pattern->getDependence() | TypeDependence::Dependent | | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5609 | TypeDependence::Instantiation) & | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5610 | ~TypeDependence::UnexpandedPack), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5611 | Pattern(Pattern) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5612 | PackExpansionTypeBits.NumExpansions = | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5613 | NumExpansions ? *NumExpansions + 1 : 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5614 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5615 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5616 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5617 | /// Retrieve the pattern of this pack expansion, which is the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5618 | /// type that will be repeatedly instantiated when instantiating the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5619 | /// pack expansion itself. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5620 | QualType getPattern() const { return Pattern; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5621 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5622 | /// Retrieve the number of expansions that this pack expansion will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5623 | /// generate, if known. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5624 | Optional<unsigned> getNumExpansions() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5625 | if (PackExpansionTypeBits.NumExpansions) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5626 | return PackExpansionTypeBits.NumExpansions - 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5627 | return None; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5628 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5629 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5630 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5631 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5632 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5633 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5634 | Profile(ID, getPattern(), getNumExpansions()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5635 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5636 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5637 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pattern, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5638 | Optional<unsigned> NumExpansions) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5639 | ID.AddPointer(Pattern.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5640 | ID.AddBoolean(NumExpansions.hasValue()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5641 | if (NumExpansions) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5642 | ID.AddInteger(*NumExpansions); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5643 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5644 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5645 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5646 | return T->getTypeClass() == PackExpansion; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5647 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5648 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5649 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5650 | /// This class wraps the list of protocol qualifiers. For types that can | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5651 | /// take ObjC protocol qualifers, they can subclass this class. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5652 | template <class T> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5653 | class ObjCProtocolQualifiers { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5654 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5655 | ObjCProtocolQualifiers() = default; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5656 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5657 | ObjCProtocolDecl * const *getProtocolStorage() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5658 | return const_cast<ObjCProtocolQualifiers*>(this)->getProtocolStorage(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5659 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5660 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5661 | ObjCProtocolDecl **getProtocolStorage() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5662 | return static_cast<T*>(this)->getProtocolStorageImpl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5663 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5664 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5665 | void setNumProtocols(unsigned N) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5666 | static_cast<T*>(this)->setNumProtocolsImpl(N); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5667 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5668 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5669 | void initialize(ArrayRef<ObjCProtocolDecl *> protocols) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5670 | setNumProtocols(protocols.size()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5671 | assert(getNumProtocols() == protocols.size() &&((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count" ) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5672, __PRETTY_FUNCTION__)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5672 | "bitfield overflow in protocol count")((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count" ) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5672, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5673 | if (!protocols.empty()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5674 | memcpy(getProtocolStorage(), protocols.data(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5675 | protocols.size() * sizeof(ObjCProtocolDecl*)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5676 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5677 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5678 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5679 | using qual_iterator = ObjCProtocolDecl * const *; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5680 | using qual_range = llvm::iterator_range<qual_iterator>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5681 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5682 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5683 | qual_iterator qual_begin() const { return getProtocolStorage(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5684 | qual_iterator qual_end() const { return qual_begin() + getNumProtocols(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5685 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5686 | bool qual_empty() const { return getNumProtocols() == 0; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5687 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5688 | /// Return the number of qualifying protocols in this type, or 0 if | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5689 | /// there are none. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5690 | unsigned getNumProtocols() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5691 | return static_cast<const T*>(this)->getNumProtocolsImpl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5692 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5693 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5694 | /// Fetch a protocol by index. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5695 | ObjCProtocolDecl *getProtocol(unsigned I) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5696 | assert(I < getNumProtocols() && "Out-of-range protocol access")((I < getNumProtocols() && "Out-of-range protocol access" ) ? static_cast<void> (0) : __assert_fail ("I < getNumProtocols() && \"Out-of-range protocol access\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5696, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5697 | return qual_begin()[I]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5698 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5699 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5700 | /// Retrieve all of the protocol qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5701 | ArrayRef<ObjCProtocolDecl *> getProtocols() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5702 | return ArrayRef<ObjCProtocolDecl *>(qual_begin(), getNumProtocols()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5703 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5704 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5705 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5706 | /// Represents a type parameter type in Objective C. It can take | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5707 | /// a list of protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5708 | class ObjCTypeParamType : public Type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5709 | public ObjCProtocolQualifiers<ObjCTypeParamType>, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5710 | public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5711 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5712 | friend class ObjCProtocolQualifiers<ObjCTypeParamType>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5713 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5714 | /// The number of protocols stored on this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5715 | unsigned NumProtocols : 6; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5716 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5717 | ObjCTypeParamDecl *OTPDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5718 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5719 | /// The protocols are stored after the ObjCTypeParamType node. In the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5720 | /// canonical type, the list of protocols are sorted alphabetically | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5721 | /// and uniqued. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5722 | ObjCProtocolDecl **getProtocolStorageImpl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5723 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5724 | /// Return the number of qualifying protocols in this interface type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5725 | /// or 0 if there are none. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5726 | unsigned getNumProtocolsImpl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5727 | return NumProtocols; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5728 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5729 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5730 | void setNumProtocolsImpl(unsigned N) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5731 | NumProtocols = N; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5732 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5733 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5734 | ObjCTypeParamType(const ObjCTypeParamDecl *D, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5735 | QualType can, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5736 | ArrayRef<ObjCProtocolDecl *> protocols); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5737 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5738 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5739 | bool isSugared() const { return true; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5740 | QualType desugar() const { return getCanonicalTypeInternal(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5741 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5742 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5743 | return T->getTypeClass() == ObjCTypeParam; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5744 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5745 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5746 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5747 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5748 | const ObjCTypeParamDecl *OTPDecl, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5749 | QualType CanonicalType, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5750 | ArrayRef<ObjCProtocolDecl *> protocols); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5751 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5752 | ObjCTypeParamDecl *getDecl() const { return OTPDecl; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5753 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5754 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5755 | /// Represents a class type in Objective C. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5756 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5757 | /// Every Objective C type is a combination of a base type, a set of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5758 | /// type arguments (optional, for parameterized classes) and a list of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5759 | /// protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5760 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5761 | /// Given the following declarations: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5762 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5763 | /// \@class C<T>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5764 | /// \@protocol P; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5765 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5766 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5767 | /// 'C' is an ObjCInterfaceType C. It is sugar for an ObjCObjectType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5768 | /// with base C and no protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5769 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5770 | /// 'C<P>' is an unspecialized ObjCObjectType with base C and protocol list [P]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5771 | /// 'C<C*>' is a specialized ObjCObjectType with type arguments 'C*' and no | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5772 | /// protocol list. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5773 | /// 'C<C*><P>' is a specialized ObjCObjectType with base C, type arguments 'C*', | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5774 | /// and protocol list [P]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5775 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5776 | /// 'id' is a TypedefType which is sugar for an ObjCObjectPointerType whose | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5777 | /// pointee is an ObjCObjectType with base BuiltinType::ObjCIdType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5778 | /// and no protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5779 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5780 | /// 'id<P>' is an ObjCObjectPointerType whose pointee is an ObjCObjectType | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5781 | /// with base BuiltinType::ObjCIdType and protocol list [P]. Eventually | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5782 | /// this should get its own sugar class to better represent the source. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5783 | class ObjCObjectType : public Type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5784 | public ObjCProtocolQualifiers<ObjCObjectType> { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5785 | friend class ObjCProtocolQualifiers<ObjCObjectType>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5786 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5787 | // ObjCObjectType.NumTypeArgs - the number of type arguments stored | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5788 | // after the ObjCObjectPointerType node. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5789 | // ObjCObjectType.NumProtocols - the number of protocols stored | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5790 | // after the type arguments of ObjCObjectPointerType node. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5791 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5792 | // These protocols are those written directly on the type. If | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5793 | // protocol qualifiers ever become additive, the iterators will need | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5794 | // to get kindof complicated. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5795 | // | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5796 | // In the canonical object type, these are sorted alphabetically | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5797 | // and uniqued. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5798 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5799 | /// Either a BuiltinType or an InterfaceType or sugar for either. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5800 | QualType BaseType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5801 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5802 | /// Cached superclass type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5803 | mutable llvm::PointerIntPair<const ObjCObjectType *, 1, bool> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5804 | CachedSuperClassType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5805 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5806 | QualType *getTypeArgStorage(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5807 | const QualType *getTypeArgStorage() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5808 | return const_cast<ObjCObjectType *>(this)->getTypeArgStorage(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5809 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5810 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5811 | ObjCProtocolDecl **getProtocolStorageImpl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5812 | /// Return the number of qualifying protocols in this interface type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5813 | /// or 0 if there are none. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5814 | unsigned getNumProtocolsImpl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5815 | return ObjCObjectTypeBits.NumProtocols; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5816 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5817 | void setNumProtocolsImpl(unsigned N) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5818 | ObjCObjectTypeBits.NumProtocols = N; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5819 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5820 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5821 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5822 | enum Nonce_ObjCInterface { Nonce_ObjCInterface }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5823 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5824 | ObjCObjectType(QualType Canonical, QualType Base, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5825 | ArrayRef<QualType> typeArgs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5826 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5827 | bool isKindOf); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5828 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5829 | ObjCObjectType(enum Nonce_ObjCInterface) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5830 | : Type(ObjCInterface, QualType(), TypeDependence::None), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5831 | BaseType(QualType(this_(), 0)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5832 | ObjCObjectTypeBits.NumProtocols = 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5833 | ObjCObjectTypeBits.NumTypeArgs = 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5834 | ObjCObjectTypeBits.IsKindOf = 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5835 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5836 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5837 | void computeSuperClassTypeSlow() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5838 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5839 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5840 | /// Gets the base type of this object type. This is always (possibly | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5841 | /// sugar for) one of: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5842 | /// - the 'id' builtin type (as opposed to the 'id' type visible to the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5843 | /// user, which is a typedef for an ObjCObjectPointerType) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5844 | /// - the 'Class' builtin type (same caveat) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5845 | /// - an ObjCObjectType (currently always an ObjCInterfaceType) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5846 | QualType getBaseType() const { return BaseType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5847 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5848 | bool isObjCId() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5849 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCId); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5850 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5851 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5852 | bool isObjCClass() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5853 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCClass); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5854 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5855 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5856 | bool isObjCUnqualifiedId() const { return qual_empty() && isObjCId(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5857 | bool isObjCUnqualifiedClass() const { return qual_empty() && isObjCClass(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5858 | bool isObjCUnqualifiedIdOrClass() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5859 | if (!qual_empty()) return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5860 | if (const BuiltinType *T = getBaseType()->getAs<BuiltinType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5861 | return T->getKind() == BuiltinType::ObjCId || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5862 | T->getKind() == BuiltinType::ObjCClass; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5863 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5864 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5865 | bool isObjCQualifiedId() const { return !qual_empty() && isObjCId(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5866 | bool isObjCQualifiedClass() const { return !qual_empty() && isObjCClass(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5867 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5868 | /// Gets the interface declaration for this object type, if the base type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5869 | /// really is an interface. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5870 | ObjCInterfaceDecl *getInterface() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5871 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5872 | /// Determine whether this object type is "specialized", meaning | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5873 | /// that it has type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5874 | bool isSpecialized() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5875 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5876 | /// Determine whether this object type was written with type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5877 | bool isSpecializedAsWritten() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5878 | return ObjCObjectTypeBits.NumTypeArgs > 0; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5879 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5880 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5881 | /// Determine whether this object type is "unspecialized", meaning | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5882 | /// that it has no type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5883 | bool isUnspecialized() const { return !isSpecialized(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5884 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5885 | /// Determine whether this object type is "unspecialized" as | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5886 | /// written, meaning that it has no type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5887 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5888 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5889 | /// Retrieve the type arguments of this object type (semantically). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5890 | ArrayRef<QualType> getTypeArgs() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5891 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5892 | /// Retrieve the type arguments of this object type as they were | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5893 | /// written. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5894 | ArrayRef<QualType> getTypeArgsAsWritten() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5895 | return llvm::makeArrayRef(getTypeArgStorage(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5896 | ObjCObjectTypeBits.NumTypeArgs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5897 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5898 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5899 | /// Whether this is a "__kindof" type as written. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5900 | bool isKindOfTypeAsWritten() const { return ObjCObjectTypeBits.IsKindOf; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5901 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5902 | /// Whether this ia a "__kindof" type (semantically). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5903 | bool isKindOfType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5904 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5905 | /// Retrieve the type of the superclass of this object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5906 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5907 | /// This operation substitutes any type arguments into the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5908 | /// superclass of the current class type, potentially producing a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5909 | /// specialization of the superclass type. Produces a null type if | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5910 | /// there is no superclass. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5911 | QualType getSuperClassType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5912 | if (!CachedSuperClassType.getInt()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5913 | computeSuperClassTypeSlow(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5914 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5915 | assert(CachedSuperClassType.getInt() && "Superclass not set?")((CachedSuperClassType.getInt() && "Superclass not set?" ) ? static_cast<void> (0) : __assert_fail ("CachedSuperClassType.getInt() && \"Superclass not set?\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 5915, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5916 | return QualType(CachedSuperClassType.getPointer(), 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5917 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5918 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5919 | /// Strip off the Objective-C "kindof" type and (with it) any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5920 | /// protocol qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5921 | QualType stripObjCKindOfTypeAndQuals(const ASTContext &ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5922 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5923 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5924 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5925 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5926 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5927 | return T->getTypeClass() == ObjCObject || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5928 | T->getTypeClass() == ObjCInterface; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5929 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5930 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5931 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5932 | /// A class providing a concrete implementation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5933 | /// of ObjCObjectType, so as to not increase the footprint of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5934 | /// ObjCInterfaceType. Code outside of ASTContext and the core type | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5935 | /// system should not reference this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5936 | class ObjCObjectTypeImpl : public ObjCObjectType, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5937 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5938 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5939 | // If anyone adds fields here, ObjCObjectType::getProtocolStorage() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5940 | // will need to be modified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5941 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5942 | ObjCObjectTypeImpl(QualType Canonical, QualType Base, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5943 | ArrayRef<QualType> typeArgs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5944 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5945 | bool isKindOf) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5946 | : ObjCObjectType(Canonical, Base, typeArgs, protocols, isKindOf) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5947 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5948 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5949 | void Profile(llvm::FoldingSetNodeID &ID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5950 | static void Profile(llvm::FoldingSetNodeID &ID, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5951 | QualType Base, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5952 | ArrayRef<QualType> typeArgs, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5953 | ArrayRef<ObjCProtocolDecl *> protocols, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5954 | bool isKindOf); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5955 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5956 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5957 | inline QualType *ObjCObjectType::getTypeArgStorage() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5958 | return reinterpret_cast<QualType *>(static_cast<ObjCObjectTypeImpl*>(this)+1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5959 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5960 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5961 | inline ObjCProtocolDecl **ObjCObjectType::getProtocolStorageImpl() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5962 | return reinterpret_cast<ObjCProtocolDecl**>( | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5963 | getTypeArgStorage() + ObjCObjectTypeBits.NumTypeArgs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5964 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5965 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5966 | inline ObjCProtocolDecl **ObjCTypeParamType::getProtocolStorageImpl() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5967 | return reinterpret_cast<ObjCProtocolDecl**>( | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5968 | static_cast<ObjCTypeParamType*>(this)+1); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5969 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5970 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5971 | /// Interfaces are the core concept in Objective-C for object oriented design. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5972 | /// They basically correspond to C++ classes. There are two kinds of interface | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5973 | /// types: normal interfaces like `NSString`, and qualified interfaces, which | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5974 | /// are qualified with a protocol list like `NSString<NSCopyable, NSAmazing>`. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5975 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5976 | /// ObjCInterfaceType guarantees the following properties when considered | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5977 | /// as a subtype of its superclass, ObjCObjectType: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5978 | /// - There are no protocol qualifiers. To reinforce this, code which | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5979 | /// tries to invoke the protocol methods via an ObjCInterfaceType will | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5980 | /// fail to compile. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5981 | /// - It is its own base type. That is, if T is an ObjCInterfaceType*, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5982 | /// T->getBaseType() == QualType(T, 0). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5983 | class ObjCInterfaceType : public ObjCObjectType { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5984 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5985 | friend class ASTReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5986 | friend class ObjCInterfaceDecl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5987 | template <class T> friend class serialization::AbstractTypeReader; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5988 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5989 | mutable ObjCInterfaceDecl *Decl; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5990 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5991 | ObjCInterfaceType(const ObjCInterfaceDecl *D) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5992 | : ObjCObjectType(Nonce_ObjCInterface), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5993 | Decl(const_cast<ObjCInterfaceDecl*>(D)) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5994 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5995 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5996 | /// Get the declaration of this interface. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5997 | ObjCInterfaceDecl *getDecl() const { return Decl; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5998 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5999 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6000 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6002 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6003 | return T->getTypeClass() == ObjCInterface; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6004 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6006 | // Nonsense to "hide" certain members of ObjCObjectType within this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6007 | // class. People asking for protocols on an ObjCInterfaceType are | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6008 | // not going to get what they want: ObjCInterfaceTypes are | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6009 | // guaranteed to have no protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6010 | enum { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6011 | qual_iterator, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6012 | qual_begin, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6013 | qual_end, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6014 | getNumProtocols, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6015 | getProtocol | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6016 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6017 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6019 | inline ObjCInterfaceDecl *ObjCObjectType::getInterface() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6020 | QualType baseType = getBaseType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6021 | while (const auto *ObjT = baseType->getAs<ObjCObjectType>()) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6022 | if (const auto *T = dyn_cast<ObjCInterfaceType>(ObjT)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6023 | return T->getDecl(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6025 | baseType = ObjT->getBaseType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6026 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6027 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6028 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6029 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6030 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6031 | /// Represents a pointer to an Objective C object. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6032 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6033 | /// These are constructed from pointer declarators when the pointee type is | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6034 | /// an ObjCObjectType (or sugar for one). In addition, the 'id' and 'Class' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6035 | /// types are typedefs for these, and the protocol-qualified types 'id<P>' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6036 | /// and 'Class<P>' are translated into these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6037 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6038 | /// Pointers to pointers to Objective C objects are still PointerTypes; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6039 | /// only the first level of pointer gets it own type implementation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6040 | class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6041 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6042 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6043 | QualType PointeeType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6044 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6045 | ObjCObjectPointerType(QualType Canonical, QualType Pointee) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6046 | : Type(ObjCObjectPointer, Canonical, Pointee->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6047 | PointeeType(Pointee) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6048 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6049 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6050 | /// Gets the type pointed to by this ObjC pointer. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6051 | /// The result will always be an ObjCObjectType or sugar thereof. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6052 | QualType getPointeeType() const { return PointeeType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6053 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6054 | /// Gets the type pointed to by this ObjC pointer. Always returns non-null. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6055 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6056 | /// This method is equivalent to getPointeeType() except that | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6057 | /// it discards any typedefs (or other sugar) between this | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6058 | /// type and the "outermost" object type. So for: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6059 | /// \code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6060 | /// \@class A; \@protocol P; \@protocol Q; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6061 | /// typedef A<P> AP; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6062 | /// typedef A A1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6063 | /// typedef A1<P> A1P; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6064 | /// typedef A1P<Q> A1PQ; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6065 | /// \endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6066 | /// For 'A*', getObjectType() will return 'A'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6067 | /// For 'A<P>*', getObjectType() will return 'A<P>'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6068 | /// For 'AP*', getObjectType() will return 'A<P>'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6069 | /// For 'A1*', getObjectType() will return 'A'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6070 | /// For 'A1<P>*', getObjectType() will return 'A1<P>'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6071 | /// For 'A1P*', getObjectType() will return 'A1<P>'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6072 | /// For 'A1PQ*', getObjectType() will return 'A1<Q>', because | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6073 | /// adding protocols to a protocol-qualified base discards the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6074 | /// old qualifiers (for now). But if it didn't, getObjectType() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6075 | /// would return 'A1P<Q>' (and we'd have to make iterating over | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6076 | /// qualifiers more complicated). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6077 | const ObjCObjectType *getObjectType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6078 | return PointeeType->castAs<ObjCObjectType>(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6079 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6080 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6081 | /// If this pointer points to an Objective C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6082 | /// \@interface type, gets the type for that interface. Any protocol | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6083 | /// qualifiers on the interface are ignored. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6084 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6085 | /// \return null if the base type for this pointer is 'id' or 'Class' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6086 | const ObjCInterfaceType *getInterfaceType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6087 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6088 | /// If this pointer points to an Objective \@interface | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6089 | /// type, gets the declaration for that interface. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6090 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6091 | /// \return null if the base type for this pointer is 'id' or 'Class' | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6092 | ObjCInterfaceDecl *getInterfaceDecl() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6093 | return getObjectType()->getInterface(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6094 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6095 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6096 | /// True if this is equivalent to the 'id' type, i.e. if | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6097 | /// its object type is the primitive 'id' type with no protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6098 | bool isObjCIdType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6099 | return getObjectType()->isObjCUnqualifiedId(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6100 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6101 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6102 | /// True if this is equivalent to the 'Class' type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6103 | /// i.e. if its object tive is the primitive 'Class' type with no protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6104 | bool isObjCClassType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6105 | return getObjectType()->isObjCUnqualifiedClass(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6106 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6107 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6108 | /// True if this is equivalent to the 'id' or 'Class' type, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6109 | bool isObjCIdOrClassType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6110 | return getObjectType()->isObjCUnqualifiedIdOrClass(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6111 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6112 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6113 | /// True if this is equivalent to 'id<P>' for some non-empty set of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6114 | /// protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6115 | bool isObjCQualifiedIdType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6116 | return getObjectType()->isObjCQualifiedId(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6117 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6118 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6119 | /// True if this is equivalent to 'Class<P>' for some non-empty set of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6120 | /// protocols. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6121 | bool isObjCQualifiedClassType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6122 | return getObjectType()->isObjCQualifiedClass(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6123 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6124 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6125 | /// Whether this is a "__kindof" type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6126 | bool isKindOfType() const { return getObjectType()->isKindOfType(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6127 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6128 | /// Whether this type is specialized, meaning that it has type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6129 | bool isSpecialized() const { return getObjectType()->isSpecialized(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6130 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6131 | /// Whether this type is specialized, meaning that it has type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6132 | bool isSpecializedAsWritten() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6133 | return getObjectType()->isSpecializedAsWritten(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6134 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6135 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6136 | /// Whether this type is unspecialized, meaning that is has no type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6137 | bool isUnspecialized() const { return getObjectType()->isUnspecialized(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6138 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6139 | /// Determine whether this object type is "unspecialized" as | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6140 | /// written, meaning that it has no type arguments. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6141 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6142 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6143 | /// Retrieve the type arguments for this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6144 | ArrayRef<QualType> getTypeArgs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6145 | return getObjectType()->getTypeArgs(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6146 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6147 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6148 | /// Retrieve the type arguments for this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6149 | ArrayRef<QualType> getTypeArgsAsWritten() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6150 | return getObjectType()->getTypeArgsAsWritten(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6151 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6152 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6153 | /// An iterator over the qualifiers on the object type. Provided | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6154 | /// for convenience. This will always iterate over the full set of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6155 | /// protocols on a type, not just those provided directly. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6156 | using qual_iterator = ObjCObjectType::qual_iterator; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6157 | using qual_range = llvm::iterator_range<qual_iterator>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6158 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6159 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6160 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6161 | qual_iterator qual_begin() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6162 | return getObjectType()->qual_begin(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6163 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6164 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6165 | qual_iterator qual_end() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6166 | return getObjectType()->qual_end(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6167 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6168 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6169 | bool qual_empty() const { return getObjectType()->qual_empty(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6170 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6171 | /// Return the number of qualifying protocols on the object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6172 | unsigned getNumProtocols() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6173 | return getObjectType()->getNumProtocols(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6174 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6175 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6176 | /// Retrieve a qualifying protocol by index on the object type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6177 | ObjCProtocolDecl *getProtocol(unsigned I) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6178 | return getObjectType()->getProtocol(I); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6179 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6180 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6181 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6182 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6183 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6184 | /// Retrieve the type of the superclass of this object pointer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6185 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6186 | /// This operation substitutes any type arguments into the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6187 | /// superclass of the current class type, potentially producing a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6188 | /// pointer to a specialization of the superclass type. Produces a | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6189 | /// null type if there is no superclass. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6190 | QualType getSuperClassType() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6191 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6192 | /// Strip off the Objective-C "kindof" type and (with it) any | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6193 | /// protocol qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6194 | const ObjCObjectPointerType *stripObjCKindOfTypeAndQuals( | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6195 | const ASTContext &ctx) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6196 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6197 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6198 | Profile(ID, getPointeeType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6199 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6200 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6201 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6202 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6203 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6204 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6205 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6206 | return T->getTypeClass() == ObjCObjectPointer; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6207 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6208 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6209 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6210 | class AtomicType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6211 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6212 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6213 | QualType ValueType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6214 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6215 | AtomicType(QualType ValTy, QualType Canonical) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6216 | : Type(Atomic, Canonical, ValTy->getDependence()), ValueType(ValTy) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6217 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6218 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6219 | /// Gets the type contained by this atomic type, i.e. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6220 | /// the type returned by performing an atomic load of this atomic type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6221 | QualType getValueType() const { return ValueType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6222 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6223 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6224 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6225 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6226 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6227 | Profile(ID, getValueType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6228 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6229 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6230 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6231 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6232 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6233 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6234 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6235 | return T->getTypeClass() == Atomic; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6236 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6237 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6238 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6239 | /// PipeType - OpenCL20. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6240 | class PipeType : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6241 | friend class ASTContext; // ASTContext creates these. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6242 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6243 | QualType ElementType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6244 | bool isRead; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6245 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6246 | PipeType(QualType elemType, QualType CanonicalPtr, bool isRead) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6247 | : Type(Pipe, CanonicalPtr, elemType->getDependence()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6248 | ElementType(elemType), isRead(isRead) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6249 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6250 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6251 | QualType getElementType() const { return ElementType; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6252 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6253 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6254 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6255 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6256 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6257 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6258 | Profile(ID, getElementType(), isReadOnly()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6259 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6260 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6261 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T, bool isRead) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6262 | ID.AddPointer(T.getAsOpaquePtr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6263 | ID.AddBoolean(isRead); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6264 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6265 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6266 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6267 | return T->getTypeClass() == Pipe; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6268 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6269 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6270 | bool isReadOnly() const { return isRead; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6271 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6272 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6273 | /// A fixed int type of a specified bitwidth. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6274 | class ExtIntType final : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6275 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6276 | unsigned IsUnsigned : 1; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6277 | unsigned NumBits : 24; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6278 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6279 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6280 | ExtIntType(bool isUnsigned, unsigned NumBits); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6281 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6282 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6283 | bool isUnsigned() const { return IsUnsigned; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6284 | bool isSigned() const { return !IsUnsigned; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6285 | unsigned getNumBits() const { return NumBits; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6286 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6287 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6288 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6289 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6290 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6291 | Profile(ID, isUnsigned(), getNumBits()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6292 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6293 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6294 | static void Profile(llvm::FoldingSetNodeID &ID, bool IsUnsigned, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6295 | unsigned NumBits) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6296 | ID.AddBoolean(IsUnsigned); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6297 | ID.AddInteger(NumBits); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6298 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6299 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6300 | static bool classof(const Type *T) { return T->getTypeClass() == ExtInt; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6301 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6302 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6303 | class DependentExtIntType final : public Type, public llvm::FoldingSetNode { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6304 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6305 | const ASTContext &Context; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6306 | llvm::PointerIntPair<Expr*, 1, bool> ExprAndUnsigned; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6307 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6308 | protected: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6309 | DependentExtIntType(const ASTContext &Context, bool IsUnsigned, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6310 | Expr *NumBits); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6311 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6312 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6313 | bool isUnsigned() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6314 | bool isSigned() const { return !isUnsigned(); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6315 | Expr *getNumBitsExpr() const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6316 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6317 | bool isSugared() const { return false; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6318 | QualType desugar() const { return QualType(this, 0); } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6319 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6320 | void Profile(llvm::FoldingSetNodeID &ID) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6321 | Profile(ID, Context, isUnsigned(), getNumBitsExpr()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6322 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6323 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6324 | bool IsUnsigned, Expr *NumBitsExpr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6325 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6326 | static bool classof(const Type *T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6327 | return T->getTypeClass() == DependentExtInt; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6328 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6329 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6330 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6331 | /// A qualifier set is used to build a set of qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6332 | class QualifierCollector : public Qualifiers { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6333 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6334 | QualifierCollector(Qualifiers Qs = Qualifiers()) : Qualifiers(Qs) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6335 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6336 | /// Collect any qualifiers on the given type and return an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6337 | /// unqualified type. The qualifiers are assumed to be consistent | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6338 | /// with those already in the type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6339 | const Type *strip(QualType type) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6340 | addFastQualifiers(type.getLocalFastQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6341 | if (!type.hasLocalNonFastQualifiers()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6342 | return type.getTypePtrUnsafe(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6343 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6344 | const ExtQuals *extQuals = type.getExtQualsUnsafe(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6345 | addConsistentQualifiers(extQuals->getQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6346 | return extQuals->getBaseType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6347 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6348 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6349 | /// Apply the collected qualifiers to the given type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6350 | QualType apply(const ASTContext &Context, QualType QT) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6351 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6352 | /// Apply the collected qualifiers to the given type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6353 | QualType apply(const ASTContext &Context, const Type* T) const; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6354 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6355 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6356 | /// A container of type source information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6357 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6358 | /// A client can read the relevant info using TypeLoc wrappers, e.g: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6359 | /// @code | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6360 | /// TypeLoc TL = TypeSourceInfo->getTypeLoc(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6361 | /// TL.getBeginLoc().print(OS, SrcMgr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6362 | /// @endcode | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6363 | class alignas(8) TypeSourceInfo { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6364 | // Contains a memory block after the class, used for type source information, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6365 | // allocated by ASTContext. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6366 | friend class ASTContext; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6367 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6368 | QualType Ty; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6369 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6370 | TypeSourceInfo(QualType ty) : Ty(ty) {} | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6371 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6372 | public: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6373 | /// Return the type wrapped by this type source info. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6374 | QualType getType() const { return Ty; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6375 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6376 | /// Return the TypeLoc wrapper for the type source info. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6377 | TypeLoc getTypeLoc() const; // implemented in TypeLoc.h | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6378 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6379 | /// Override the type stored in this TypeSourceInfo. Use with caution! | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6380 | void overrideType(QualType T) { Ty = T; } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6381 | }; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6382 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6383 | // Inline function definitions. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6384 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6385 | inline SplitQualType SplitQualType::getSingleStepDesugaredType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6386 | SplitQualType desugar = | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6387 | Ty->getLocallyUnqualifiedSingleStepDesugaredType().split(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6388 | desugar.Quals.addConsistentQualifiers(Quals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6389 | return desugar; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6390 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6391 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6392 | inline const Type *QualType::getTypePtr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6393 | return getCommonPtr()->BaseType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6394 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6395 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6396 | inline const Type *QualType::getTypePtrOrNull() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6397 | return (isNull() ? nullptr : getCommonPtr()->BaseType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6398 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6399 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6400 | inline SplitQualType QualType::split() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6401 | if (!hasLocalNonFastQualifiers()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6402 | return SplitQualType(getTypePtrUnsafe(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6403 | Qualifiers::fromFastMask(getLocalFastQualifiers())); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6404 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6405 | const ExtQuals *eq = getExtQualsUnsafe(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6406 | Qualifiers qs = eq->getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6407 | qs.addFastQualifiers(getLocalFastQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6408 | return SplitQualType(eq->getBaseType(), qs); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6409 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6410 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6411 | inline Qualifiers QualType::getLocalQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6412 | Qualifiers Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6413 | if (hasLocalNonFastQualifiers()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6414 | Quals = getExtQualsUnsafe()->getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6415 | Quals.addFastQualifiers(getLocalFastQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6416 | return Quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6417 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6418 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6419 | inline Qualifiers QualType::getQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6420 | Qualifiers quals = getCommonPtr()->CanonicalType.getLocalQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6421 | quals.addFastQualifiers(getLocalFastQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6422 | return quals; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6423 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6424 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6425 | inline unsigned QualType::getCVRQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6426 | unsigned cvr = getCommonPtr()->CanonicalType.getLocalCVRQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6427 | cvr |= getLocalCVRQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6428 | return cvr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6429 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6430 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6431 | inline QualType QualType::getCanonicalType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6432 | QualType canon = getCommonPtr()->CanonicalType; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6433 | return canon.withFastQualifiers(getLocalFastQualifiers()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6434 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6435 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6436 | inline bool QualType::isCanonical() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6437 | return getTypePtr()->isCanonicalUnqualified(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6438 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6439 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6440 | inline bool QualType::isCanonicalAsParam() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6441 | if (!isCanonical()) return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6442 | if (hasLocalQualifiers()) return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6443 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6444 | const Type *T = getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6445 | if (T->isVariablyModifiedType() && T->hasSizedVLAType()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6446 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6447 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6448 | return !isa<FunctionType>(T) && !isa<ArrayType>(T); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6449 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6450 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6451 | inline bool QualType::isConstQualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6452 | return isLocalConstQualified() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6453 | getCommonPtr()->CanonicalType.isLocalConstQualified(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6454 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6455 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6456 | inline bool QualType::isRestrictQualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6457 | return isLocalRestrictQualified() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6458 | getCommonPtr()->CanonicalType.isLocalRestrictQualified(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6459 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6460 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6461 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6462 | inline bool QualType::isVolatileQualified() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6463 | return isLocalVolatileQualified() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6464 | getCommonPtr()->CanonicalType.isLocalVolatileQualified(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6465 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6466 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6467 | inline bool QualType::hasQualifiers() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6468 | return hasLocalQualifiers() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6469 | getCommonPtr()->CanonicalType.hasLocalQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6470 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6471 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6472 | inline QualType QualType::getUnqualifiedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6473 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6474 | return QualType(getTypePtr(), 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6475 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6476 | return QualType(getSplitUnqualifiedTypeImpl(*this).Ty, 0); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6477 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6478 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6479 | inline SplitQualType QualType::getSplitUnqualifiedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6480 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6481 | return split(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6482 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6483 | return getSplitUnqualifiedTypeImpl(*this); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6484 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6485 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6486 | inline void QualType::removeLocalConst() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6487 | removeLocalFastQualifiers(Qualifiers::Const); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6488 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6489 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6490 | inline void QualType::removeLocalRestrict() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6491 | removeLocalFastQualifiers(Qualifiers::Restrict); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6492 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6493 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6494 | inline void QualType::removeLocalVolatile() { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6495 | removeLocalFastQualifiers(Qualifiers::Volatile); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6496 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6497 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6498 | inline void QualType::removeLocalCVRQualifiers(unsigned Mask) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6499 | assert(!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits")((!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::CVRMask) && \"mask has non-CVR bits\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 6499, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6500 | static_assert((int)Qualifiers::CVRMask == (int)Qualifiers::FastMask, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6501 | "Fast bits differ from CVR bits!"); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6502 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6503 | // Fast path: we don't need to touch the slow qualifiers. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6504 | removeLocalFastQualifiers(Mask); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6505 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6506 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6507 | /// Check if this type has any address space qualifier. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6508 | inline bool QualType::hasAddressSpace() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6509 | return getQualifiers().hasAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6510 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6511 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6512 | /// Return the address space of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6513 | inline LangAS QualType::getAddressSpace() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6514 | return getQualifiers().getAddressSpace(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6515 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6516 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6517 | /// Return the gc attribute of this type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6518 | inline Qualifiers::GC QualType::getObjCGCAttr() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6519 | return getQualifiers().getObjCGCAttr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6520 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6521 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6522 | inline bool QualType::hasNonTrivialToPrimitiveDefaultInitializeCUnion() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6523 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6524 | return hasNonTrivialToPrimitiveDefaultInitializeCUnion(RD); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6525 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6526 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6527 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6528 | inline bool QualType::hasNonTrivialToPrimitiveDestructCUnion() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6529 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6530 | return hasNonTrivialToPrimitiveDestructCUnion(RD); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6531 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6532 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6533 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6534 | inline bool QualType::hasNonTrivialToPrimitiveCopyCUnion() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6535 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6536 | return hasNonTrivialToPrimitiveCopyCUnion(RD); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6537 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6538 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6539 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6540 | inline FunctionType::ExtInfo getFunctionExtInfo(const Type &t) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6541 | if (const auto *PT = t.getAs<PointerType>()) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6542 | if (const auto *FT = PT->getPointeeType()->getAs<FunctionType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6543 | return FT->getExtInfo(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6544 | } else if (const auto *FT = t.getAs<FunctionType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6545 | return FT->getExtInfo(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6546 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6547 | return FunctionType::ExtInfo(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6548 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6549 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6550 | inline FunctionType::ExtInfo getFunctionExtInfo(QualType t) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6551 | return getFunctionExtInfo(*t); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6552 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6553 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6554 | /// Determine whether this type is more | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6555 | /// qualified than the Other type. For example, "const volatile int" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6556 | /// is more qualified than "const int", "volatile int", and | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6557 | /// "int". However, it is not more qualified than "const volatile | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6558 | /// int". | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6559 | inline bool QualType::isMoreQualifiedThan(QualType other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6560 | Qualifiers MyQuals = getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6561 | Qualifiers OtherQuals = other.getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6562 | return (MyQuals != OtherQuals && MyQuals.compatiblyIncludes(OtherQuals)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6563 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6564 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6565 | /// Determine whether this type is at last | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6566 | /// as qualified as the Other type. For example, "const volatile | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6567 | /// int" is at least as qualified as "const int", "volatile int", | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6568 | /// "int", and "const volatile int". | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6569 | inline bool QualType::isAtLeastAsQualifiedAs(QualType other) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6570 | Qualifiers OtherQuals = other.getQualifiers(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6571 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6572 | // Ignore __unaligned qualifier if this type is a void. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6573 | if (getUnqualifiedType()->isVoidType()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6574 | OtherQuals.removeUnaligned(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6575 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6576 | return getQualifiers().compatiblyIncludes(OtherQuals); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6577 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6578 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6579 | /// If Type is a reference type (e.g., const | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6580 | /// int&), returns the type that the reference refers to ("const | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6581 | /// int"). Otherwise, returns the type itself. This routine is used | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6582 | /// throughout Sema to implement C++ 5p6: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6583 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6584 | /// If an expression initially has the type "reference to T" (8.3.2, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6585 | /// 8.5.3), the type is adjusted to "T" prior to any further | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6586 | /// analysis, the expression designates the object or function | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6587 | /// denoted by the reference, and the expression is an lvalue. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6588 | inline QualType QualType::getNonReferenceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6589 | if (const auto *RefType = (*this)->getAs<ReferenceType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6590 | return RefType->getPointeeType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6591 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6592 | return *this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6593 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6594 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6595 | inline bool QualType::isCForbiddenLValueType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6596 | return ((getTypePtr()->isVoidType() && !hasQualifiers()) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6597 | getTypePtr()->isFunctionType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6598 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6599 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6600 | /// Tests whether the type is categorized as a fundamental type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6601 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6602 | /// \returns True for types specified in C++0x [basic.fundamental]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6603 | inline bool Type::isFundamentalType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6604 | return isVoidType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6605 | isNullPtrType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6606 | // FIXME: It's really annoying that we don't have an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6607 | // 'isArithmeticType()' which agrees with the standard definition. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6608 | (isArithmeticType() && !isEnumeralType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6609 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6610 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6611 | /// Tests whether the type is categorized as a compound type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6612 | /// | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6613 | /// \returns True for types specified in C++0x [basic.compound]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6614 | inline bool Type::isCompoundType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6615 | // C++0x [basic.compound]p1: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6616 | // Compound types can be constructed in the following ways: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6617 | // -- arrays of objects of a given type [...]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6618 | return isArrayType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6619 | // -- functions, which have parameters of given types [...]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6620 | isFunctionType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6621 | // -- pointers to void or objects or functions [...]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6622 | isPointerType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6623 | // -- references to objects or functions of a given type. [...] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6624 | isReferenceType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6625 | // -- classes containing a sequence of objects of various types, [...]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6626 | isRecordType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6627 | // -- unions, which are classes capable of containing objects of different | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6628 | // types at different times; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6629 | isUnionType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6630 | // -- enumerations, which comprise a set of named constant values. [...]; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6631 | isEnumeralType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6632 | // -- pointers to non-static class members, [...]. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6633 | isMemberPointerType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6634 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6635 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6636 | inline bool Type::isFunctionType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6637 | return isa<FunctionType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6638 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6639 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6640 | inline bool Type::isPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6641 | return isa<PointerType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6642 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6643 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6644 | inline bool Type::isAnyPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6645 | return isPointerType() || isObjCObjectPointerType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6646 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6647 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6648 | inline bool Type::isBlockPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6649 | return isa<BlockPointerType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6650 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6651 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6652 | inline bool Type::isReferenceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6653 | return isa<ReferenceType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6654 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6655 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6656 | inline bool Type::isLValueReferenceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6657 | return isa<LValueReferenceType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6658 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6659 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6660 | inline bool Type::isRValueReferenceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6661 | return isa<RValueReferenceType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6662 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6663 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6664 | inline bool Type::isObjectPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6665 | // Note: an "object pointer type" is not the same thing as a pointer to an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6666 | // object type; rather, it is a pointer to an object type or a pointer to cv | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6667 | // void. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6668 | if (const auto *T = getAs<PointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6669 | return !T->getPointeeType()->isFunctionType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6670 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6671 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6672 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6673 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6674 | inline bool Type::isFunctionPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6675 | if (const auto *T = getAs<PointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6676 | return T->getPointeeType()->isFunctionType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6677 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6678 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6679 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6680 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6681 | inline bool Type::isFunctionReferenceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6682 | if (const auto *T = getAs<ReferenceType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6683 | return T->getPointeeType()->isFunctionType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6684 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6685 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6686 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6687 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6688 | inline bool Type::isMemberPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6689 | return isa<MemberPointerType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6690 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6691 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6692 | inline bool Type::isMemberFunctionPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6693 | if (const auto *T = getAs<MemberPointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6694 | return T->isMemberFunctionPointer(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6695 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6696 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6697 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6698 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6699 | inline bool Type::isMemberDataPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6700 | if (const auto *T = getAs<MemberPointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6701 | return T->isMemberDataPointer(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6702 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6703 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6704 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6705 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6706 | inline bool Type::isArrayType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6707 | return isa<ArrayType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6708 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6709 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6710 | inline bool Type::isConstantArrayType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6711 | return isa<ConstantArrayType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6712 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6713 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6714 | inline bool Type::isIncompleteArrayType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6715 | return isa<IncompleteArrayType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6716 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6717 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6718 | inline bool Type::isVariableArrayType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6719 | return isa<VariableArrayType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6720 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6721 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6722 | inline bool Type::isDependentSizedArrayType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6723 | return isa<DependentSizedArrayType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6724 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6725 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6726 | inline bool Type::isBuiltinType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6727 | return isa<BuiltinType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6728 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6729 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6730 | inline bool Type::isRecordType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6731 | return isa<RecordType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6732 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6733 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6734 | inline bool Type::isEnumeralType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6735 | return isa<EnumType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6736 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6737 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6738 | inline bool Type::isAnyComplexType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6739 | return isa<ComplexType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6740 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6741 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6742 | inline bool Type::isVectorType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6743 | return isa<VectorType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6744 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6745 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6746 | inline bool Type::isExtVectorType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6747 | return isa<ExtVectorType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6748 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6749 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6750 | inline bool Type::isMatrixType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6751 | return isa<MatrixType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6752 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6753 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6754 | inline bool Type::isConstantMatrixType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6755 | return isa<ConstantMatrixType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6756 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6757 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6758 | inline bool Type::isDependentAddressSpaceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6759 | return isa<DependentAddressSpaceType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6760 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6761 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6762 | inline bool Type::isObjCObjectPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6763 | return isa<ObjCObjectPointerType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6764 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6765 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6766 | inline bool Type::isObjCObjectType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6767 | return isa<ObjCObjectType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6768 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6769 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6770 | inline bool Type::isObjCObjectOrInterfaceType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6771 | return isa<ObjCInterfaceType>(CanonicalType) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6772 | isa<ObjCObjectType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6773 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6774 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6775 | inline bool Type::isAtomicType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6776 | return isa<AtomicType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6777 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6778 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6779 | inline bool Type::isUndeducedAutoType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6780 | return isa<AutoType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6781 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6782 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6783 | inline bool Type::isObjCQualifiedIdType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6784 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6785 | return OPT->isObjCQualifiedIdType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6786 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6787 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6788 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6789 | inline bool Type::isObjCQualifiedClassType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6790 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6791 | return OPT->isObjCQualifiedClassType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6792 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6793 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6794 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6795 | inline bool Type::isObjCIdType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6796 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6797 | return OPT->isObjCIdType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6798 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6799 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6800 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6801 | inline bool Type::isObjCClassType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6802 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6803 | return OPT->isObjCClassType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6804 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6805 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6806 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6807 | inline bool Type::isObjCSelType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6808 | if (const auto *OPT = getAs<PointerType>()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6809 | return OPT->getPointeeType()->isSpecificBuiltinType(BuiltinType::ObjCSel); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6810 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6811 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6812 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6813 | inline bool Type::isObjCBuiltinType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6814 | return isObjCIdType() || isObjCClassType() || isObjCSelType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6815 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6816 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6817 | inline bool Type::isDecltypeType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6818 | return isa<DecltypeType>(this); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6819 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6820 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6821 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6822 | inline bool Type::is##Id##Type() const { \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6823 | return isSpecificBuiltinType(BuiltinType::Id); \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6824 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6825 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6826 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6827 | inline bool Type::isSamplerT() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6828 | return isSpecificBuiltinType(BuiltinType::OCLSampler); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6829 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6830 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6831 | inline bool Type::isEventT() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6832 | return isSpecificBuiltinType(BuiltinType::OCLEvent); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6833 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6834 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6835 | inline bool Type::isClkEventT() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6836 | return isSpecificBuiltinType(BuiltinType::OCLClkEvent); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6837 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6838 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6839 | inline bool Type::isQueueT() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6840 | return isSpecificBuiltinType(BuiltinType::OCLQueue); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6841 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6842 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6843 | inline bool Type::isReserveIDT() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6844 | return isSpecificBuiltinType(BuiltinType::OCLReserveID); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6845 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6846 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6847 | inline bool Type::isImageType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6848 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) is##Id##Type() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6849 | return | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6850 | #include "clang/Basic/OpenCLImageTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6851 | false; // end boolean or operation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6852 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6853 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6854 | inline bool Type::isPipeType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6855 | return isa<PipeType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6856 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6857 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6858 | inline bool Type::isExtIntType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6859 | return isa<ExtIntType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6860 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6861 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6862 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6863 | inline bool Type::is##Id##Type() const { \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6864 | return isSpecificBuiltinType(BuiltinType::Id); \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6865 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6866 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6867 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6868 | inline bool Type::isOCLIntelSubgroupAVCType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6869 | #define INTEL_SUBGROUP_AVC_TYPE(ExtType, Id) \ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6870 | isOCLIntelSubgroupAVC##Id##Type() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6871 | return | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6872 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6873 | false; // end of boolean or operation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6874 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6875 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6876 | inline bool Type::isOCLExtOpaqueType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6877 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) is##Id##Type() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6878 | return | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6879 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6880 | false; // end of boolean or operation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6881 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6882 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6883 | inline bool Type::isOpenCLSpecificType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6884 | return isSamplerT() || isEventT() || isImageType() || isClkEventT() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6885 | isQueueT() || isReserveIDT() || isPipeType() || isOCLExtOpaqueType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6886 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6887 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6888 | inline bool Type::isTemplateTypeParmType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6889 | return isa<TemplateTypeParmType>(CanonicalType); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6890 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6891 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6892 | inline bool Type::isSpecificBuiltinType(unsigned K) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6893 | if (const BuiltinType *BT
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6894 | return BT->getKind() == static_cast<BuiltinType::Kind>(K); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6895 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6896 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6897 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6898 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6899 | inline bool Type::isPlaceholderType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6900 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6901 | return BT->isPlaceholderType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6902 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6903 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6904 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6905 | inline const BuiltinType *Type::getAsPlaceholderType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6906 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6907 | if (BT->isPlaceholderType()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6908 | return BT; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6909 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6910 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6911 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6912 | inline bool Type::isSpecificPlaceholderType(unsigned K) const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6913 | assert(BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K))((BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)) ? static_cast<void> (0) : __assert_fail ("BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 6913, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6914 | return isSpecificBuiltinType(K); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6915 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6916 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6917 | inline bool Type::isNonOverloadPlaceholderType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6918 | if (const auto *BT = dyn_cast<BuiltinType>(this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6919 | return BT->isNonOverloadPlaceholderType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6920 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6921 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6922 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6923 | inline bool Type::isVoidType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6924 | return isSpecificBuiltinType(BuiltinType::Void); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6925 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6926 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6927 | inline bool Type::isHalfType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6928 | // FIXME: Should we allow complex __fp16? Probably not. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6929 | return isSpecificBuiltinType(BuiltinType::Half); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6930 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6931 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6932 | inline bool Type::isFloat16Type() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6933 | return isSpecificBuiltinType(BuiltinType::Float16); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6934 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6935 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6936 | inline bool Type::isBFloat16Type() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6937 | return isSpecificBuiltinType(BuiltinType::BFloat16); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6938 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6939 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6940 | inline bool Type::isFloat128Type() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6941 | return isSpecificBuiltinType(BuiltinType::Float128); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6942 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6943 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6944 | inline bool Type::isNullPtrType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6945 | return isSpecificBuiltinType(BuiltinType::NullPtr); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6946 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6947 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6948 | bool IsEnumDeclComplete(EnumDecl *); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6949 | bool IsEnumDeclScoped(EnumDecl *); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6950 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6951 | inline bool Type::isIntegerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6952 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6953 | return BT->getKind() >= BuiltinType::Bool && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6954 | BT->getKind() <= BuiltinType::Int128; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6955 | if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6956 | // Incomplete enum types are not treated as integer types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6957 | // FIXME: In C++, enum types are never integer types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6958 | return IsEnumDeclComplete(ET->getDecl()) && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6959 | !IsEnumDeclScoped(ET->getDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6960 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6961 | return isExtIntType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6962 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6963 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6964 | inline bool Type::isFixedPointType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6965 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6966 | return BT->getKind() >= BuiltinType::ShortAccum && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6967 | BT->getKind() <= BuiltinType::SatULongFract; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6968 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6969 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6970 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6971 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6972 | inline bool Type::isFixedPointOrIntegerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6973 | return isFixedPointType() || isIntegerType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6974 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6975 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6976 | inline bool Type::isSaturatedFixedPointType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6977 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6978 | return BT->getKind() >= BuiltinType::SatShortAccum && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6979 | BT->getKind() <= BuiltinType::SatULongFract; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6980 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6981 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6982 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6983 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6984 | inline bool Type::isUnsaturatedFixedPointType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6985 | return isFixedPointType() && !isSaturatedFixedPointType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6986 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6987 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6988 | inline bool Type::isSignedFixedPointType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6989 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6990 | return ((BT->getKind() >= BuiltinType::ShortAccum && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6991 | BT->getKind() <= BuiltinType::LongAccum) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6992 | (BT->getKind() >= BuiltinType::ShortFract && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6993 | BT->getKind() <= BuiltinType::LongFract) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6994 | (BT->getKind() >= BuiltinType::SatShortAccum && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6995 | BT->getKind() <= BuiltinType::SatLongAccum) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6996 | (BT->getKind() >= BuiltinType::SatShortFract && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6997 | BT->getKind() <= BuiltinType::SatLongFract)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6998 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6999 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7000 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7002 | inline bool Type::isUnsignedFixedPointType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7003 | return isFixedPointType() && !isSignedFixedPointType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7004 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7006 | inline bool Type::isScalarType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7007 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7008 | return BT->getKind() > BuiltinType::Void && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7009 | BT->getKind() <= BuiltinType::NullPtr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7010 | if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7011 | // Enums are scalar types, but only if they are defined. Incomplete enums | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7012 | // are not treated as scalar types. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7013 | return IsEnumDeclComplete(ET->getDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7014 | return isa<PointerType>(CanonicalType) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7015 | isa<BlockPointerType>(CanonicalType) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7016 | isa<MemberPointerType>(CanonicalType) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7017 | isa<ComplexType>(CanonicalType) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7018 | isa<ObjCObjectPointerType>(CanonicalType) || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7019 | isExtIntType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7020 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7021 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7022 | inline bool Type::isIntegralOrEnumerationType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7023 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7024 | return BT->getKind() >= BuiltinType::Bool && | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7025 | BT->getKind() <= BuiltinType::Int128; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7026 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7027 | // Check for a complete enum type; incomplete enum types are not properly an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7028 | // enumeration type in the sense required here. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7029 | if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7030 | return IsEnumDeclComplete(ET->getDecl()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7031 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7032 | return isExtIntType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7033 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7034 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7035 | inline bool Type::isBooleanType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7036 | if (const auto *BT
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7037 | return BT->getKind() == BuiltinType::Bool; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7038 | return false; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7039 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7040 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7041 | inline bool Type::isUndeducedType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7042 | auto *DT = getContainedDeducedType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7043 | return DT && !DT->isDeduced(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7044 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7045 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7046 | /// Determines whether this is a type for which one can define | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7047 | /// an overloaded operator. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7048 | inline bool Type::isOverloadableType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7049 | return isDependentType() || isRecordType() || isEnumeralType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7050 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7051 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7052 | /// Determines whether this type can decay to a pointer type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7053 | inline bool Type::canDecayToPointerType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7054 | return isFunctionType() || isArrayType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7055 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7056 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7057 | inline bool Type::hasPointerRepresentation() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7058 | return (isPointerType() || isReferenceType() || isBlockPointerType() || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7059 | isObjCObjectPointerType() || isNullPtrType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7060 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7061 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7062 | inline bool Type::hasObjCPointerRepresentation() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7063 | return isObjCObjectPointerType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7064 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7065 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7066 | inline const Type *Type::getBaseElementTypeUnsafe() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7067 | const Type *type = this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7068 | while (const ArrayType *arrayType = type->getAsArrayTypeUnsafe()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7069 | type = arrayType->getElementType().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7070 | return type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7071 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7072 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7073 | inline const Type *Type::getPointeeOrArrayElementType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7074 | const Type *type = this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7075 | if (type->isAnyPointerType()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7076 | return type->getPointeeType().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7077 | else if (type->isArrayType()) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7078 | return type->getBaseElementTypeUnsafe(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7079 | return type; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7080 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7081 | /// Insertion operator for partial diagnostics. This allows sending adress | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7082 | /// spaces into a diagnostic with <<. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7083 | inline const StreamingDiagnostic &operator<<(const StreamingDiagnostic &PD, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7084 | LangAS AS) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7085 | PD.AddTaggedVal(static_cast<std::underlying_type_t<LangAS>>(AS), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7086 | DiagnosticsEngine::ArgumentKind::ak_addrspace); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7087 | return PD; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7088 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7089 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7090 | /// Insertion operator for partial diagnostics. This allows sending Qualifiers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7091 | /// into a diagnostic with <<. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7092 | inline const StreamingDiagnostic &operator<<(const StreamingDiagnostic &PD, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7093 | Qualifiers Q) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7094 | PD.AddTaggedVal(Q.getAsOpaqueValue(), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7095 | DiagnosticsEngine::ArgumentKind::ak_qual); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7096 | return PD; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7097 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7098 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7099 | /// Insertion operator for partial diagnostics. This allows sending QualType's | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7100 | /// into a diagnostic with <<. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7101 | inline const StreamingDiagnostic &operator<<(const StreamingDiagnostic &PD, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7102 | QualType T) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7103 | PD.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7104 | DiagnosticsEngine::ak_qualtype); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7105 | return PD; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7106 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7107 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7108 | // Helper class template that is used by Type::getAs to ensure that one does | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7109 | // not try to look through a qualified type to get to an array type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7110 | template <typename T> | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7111 | using TypeIsArrayType = | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7112 | std::integral_constant<bool, std::is_same<T, ArrayType>::value || | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7113 | std::is_base_of<ArrayType, T>::value>; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7114 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7115 | // Member-template getAs<specific type>'. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7116 | template <typename T> const T *Type::getAs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7117 | static_assert(!TypeIsArrayType<T>::value, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7118 | "ArrayType cannot be used with getAs!"); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7119 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7120 | // If this is directly a T type, return it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7121 | if (const auto *Ty = dyn_cast<T>(this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7122 | return Ty; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7123 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7124 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7125 | if (!isa<T>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7126 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7127 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7128 | // If this is a typedef for the type, strip the typedef off without | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7129 | // losing all typedef information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7130 | return cast<T>(getUnqualifiedDesugaredType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7131 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7132 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7133 | template <typename T> const T *Type::getAsAdjusted() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7134 | static_assert(!TypeIsArrayType<T>::value, "ArrayType cannot be used with getAsAdjusted!"); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7135 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7136 | // If this is directly a T type, return it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7137 | if (const auto *Ty = dyn_cast<T>(this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7138 | return Ty; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7139 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7140 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7141 | if (!isa<T>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7142 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7143 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7144 | // Strip off type adjustments that do not modify the underlying nature of the | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7145 | // type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7146 | const Type *Ty = this; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7147 | while (Ty) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7148 | if (const auto *A = dyn_cast<AttributedType>(Ty)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7149 | Ty = A->getModifiedType().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7150 | else if (const auto *E = dyn_cast<ElaboratedType>(Ty)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7151 | Ty = E->desugar().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7152 | else if (const auto *P = dyn_cast<ParenType>(Ty)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7153 | Ty = P->desugar().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7154 | else if (const auto *A = dyn_cast<AdjustedType>(Ty)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7155 | Ty = A->desugar().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7156 | else if (const auto *M = dyn_cast<MacroQualifiedType>(Ty)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7157 | Ty = M->desugar().getTypePtr(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7158 | else | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7159 | break; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7160 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7161 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7162 | // Just because the canonical type is correct does not mean we can use cast<>, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7163 | // since we may not have stripped off all the sugar down to the base type. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7164 | return dyn_cast<T>(Ty); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7165 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7166 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7167 | inline const ArrayType *Type::getAsArrayTypeUnsafe() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7168 | // If this is directly an array type, return it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7169 | if (const auto *arr = dyn_cast<ArrayType>(this)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7170 | return arr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7171 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7172 | // If the canonical form of this type isn't the right kind, reject it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7173 | if (!isa<ArrayType>(CanonicalType)) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7174 | return nullptr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7175 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7176 | // If this is a typedef for the type, strip the typedef off without | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7177 | // losing all typedef information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7178 | return cast<ArrayType>(getUnqualifiedDesugaredType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7179 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7180 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7181 | template <typename T> const T *Type::castAs() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7182 | static_assert(!TypeIsArrayType<T>::value, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7183 | "ArrayType cannot be used with castAs!"); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7184 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7185 | if (const auto *ty = dyn_cast<T>(this)) return ty; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7186 | assert(isa<T>(CanonicalType))((isa<T>(CanonicalType)) ? static_cast<void> (0) : __assert_fail ("isa<T>(CanonicalType)", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 7186, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7187 | return cast<T>(getUnqualifiedDesugaredType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7188 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7189 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7190 | inline const ArrayType *Type::castAsArrayTypeUnsafe() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7191 | assert(isa<ArrayType>(CanonicalType))((isa<ArrayType>(CanonicalType)) ? static_cast<void> (0) : __assert_fail ("isa<ArrayType>(CanonicalType)", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 7191, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7192 | if (const auto *arr = dyn_cast<ArrayType>(this)) return arr; | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7193 | return cast<ArrayType>(getUnqualifiedDesugaredType()); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7194 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7195 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7196 | DecayedType::DecayedType(QualType OriginalType, QualType DecayedPtr, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7197 | QualType CanonicalPtr) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7198 | : AdjustedType(Decayed, OriginalType, DecayedPtr, CanonicalPtr) { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7199 | #ifndef NDEBUG | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7200 | QualType Adjusted = getAdjustedType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7201 | (void)AttributedType::stripOuterNullability(Adjusted); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7202 | assert(isa<PointerType>(Adjusted))((isa<PointerType>(Adjusted)) ? static_cast<void> (0) : __assert_fail ("isa<PointerType>(Adjusted)", "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/clang/include/clang/AST/Type.h" , 7202, __PRETTY_FUNCTION__)); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7203 | #endif | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7204 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7205 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7206 | QualType DecayedType::getPointeeType() const { | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7207 | QualType Decayed = getDecayedType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7208 | (void)AttributedType::stripOuterNullability(Decayed); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7209 | return cast<PointerType>(Decayed)->getPointeeType(); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7210 | } | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7211 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7212 | // Get the decimal string representation of a fixed point type, represented | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7213 | // as a scaled integer. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7214 | // TODO: At some point, we should change the arguments to instead just accept an | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7215 | // APFixedPoint instead of APSInt and scale. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7216 | void FixedPointValueToString(SmallVectorImpl<char> &Str, llvm::APSInt Val, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7217 | unsigned Scale); | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7218 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7219 | } // namespace clang | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7220 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7221 | #endif // LLVM_CLANG_AST_TYPE_H |
1 | //===- llvm/ADT/PointerIntPair.h - Pair for pointer and int -----*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file defines the PointerIntPair class. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_ADT_POINTERINTPAIR_H |
14 | #define LLVM_ADT_POINTERINTPAIR_H |
15 | |
16 | #include "llvm/Support/Compiler.h" |
17 | #include "llvm/Support/PointerLikeTypeTraits.h" |
18 | #include "llvm/Support/type_traits.h" |
19 | #include <cassert> |
20 | #include <cstdint> |
21 | #include <limits> |
22 | |
23 | namespace llvm { |
24 | |
25 | template <typename T> struct DenseMapInfo; |
26 | template <typename PointerT, unsigned IntBits, typename PtrTraits> |
27 | struct PointerIntPairInfo; |
28 | |
29 | /// PointerIntPair - This class implements a pair of a pointer and small |
30 | /// integer. It is designed to represent this in the space required by one |
31 | /// pointer by bitmangling the integer into the low part of the pointer. This |
32 | /// can only be done for small integers: typically up to 3 bits, but it depends |
33 | /// on the number of bits available according to PointerLikeTypeTraits for the |
34 | /// type. |
35 | /// |
36 | /// Note that PointerIntPair always puts the IntVal part in the highest bits |
37 | /// possible. For example, PointerIntPair<void*, 1, bool> will put the bit for |
38 | /// the bool into bit #2, not bit #0, which allows the low two bits to be used |
39 | /// for something else. For example, this allows: |
40 | /// PointerIntPair<PointerIntPair<void*, 1, bool>, 1, bool> |
41 | /// ... and the two bools will land in different bits. |
42 | template <typename PointerTy, unsigned IntBits, typename IntType = unsigned, |
43 | typename PtrTraits = PointerLikeTypeTraits<PointerTy>, |
44 | typename Info = PointerIntPairInfo<PointerTy, IntBits, PtrTraits>> |
45 | class PointerIntPair { |
46 | // Used by MSVC visualizer and generally helpful for debugging/visualizing. |
47 | using InfoTy = Info; |
48 | intptr_t Value = 0; |
49 | |
50 | public: |
51 | constexpr PointerIntPair() = default; |
52 | |
53 | PointerIntPair(PointerTy PtrVal, IntType IntVal) { |
54 | setPointerAndInt(PtrVal, IntVal); |
55 | } |
56 | |
57 | explicit PointerIntPair(PointerTy PtrVal) { initWithPointer(PtrVal); } |
58 | |
59 | PointerTy getPointer() const { return Info::getPointer(Value); } |
60 | |
61 | IntType getInt() const { return (IntType)Info::getInt(Value); } |
62 | |
63 | void setPointer(PointerTy PtrVal) LLVM_LVALUE_FUNCTION& { |
64 | Value = Info::updatePointer(Value, PtrVal); |
65 | } |
66 | |
67 | void setInt(IntType IntVal) LLVM_LVALUE_FUNCTION& { |
68 | Value = Info::updateInt(Value, static_cast<intptr_t>(IntVal)); |
69 | } |
70 | |
71 | void initWithPointer(PointerTy PtrVal) LLVM_LVALUE_FUNCTION& { |
72 | Value = Info::updatePointer(0, PtrVal); |
73 | } |
74 | |
75 | void setPointerAndInt(PointerTy PtrVal, IntType IntVal) LLVM_LVALUE_FUNCTION& { |
76 | Value = Info::updateInt(Info::updatePointer(0, PtrVal), |
77 | static_cast<intptr_t>(IntVal)); |
78 | } |
79 | |
80 | PointerTy const *getAddrOfPointer() const { |
81 | return const_cast<PointerIntPair *>(this)->getAddrOfPointer(); |
82 | } |
83 | |
84 | PointerTy *getAddrOfPointer() { |
85 | assert(Value == reinterpret_cast<intptr_t>(getPointer()) &&((Value == reinterpret_cast<intptr_t>(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer" ) ? static_cast<void> (0) : __assert_fail ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __PRETTY_FUNCTION__)) |
86 | "Can only return the address if IntBits is cleared and "((Value == reinterpret_cast<intptr_t>(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer" ) ? static_cast<void> (0) : __assert_fail ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __PRETTY_FUNCTION__)) |
87 | "PtrTraits doesn't change the pointer")((Value == reinterpret_cast<intptr_t>(getPointer()) && "Can only return the address if IntBits is cleared and " "PtrTraits doesn't change the pointer" ) ? static_cast<void> (0) : __assert_fail ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/ADT/PointerIntPair.h" , 87, __PRETTY_FUNCTION__)); |
88 | return reinterpret_cast<PointerTy *>(&Value); |
89 | } |
90 | |
91 | void *getOpaqueValue() const { return reinterpret_cast<void *>(Value); } |
92 | |
93 | void setFromOpaqueValue(void *Val) LLVM_LVALUE_FUNCTION& { |
94 | Value = reinterpret_cast<intptr_t>(Val); |
95 | } |
96 | |
97 | static PointerIntPair getFromOpaqueValue(void *V) { |
98 | PointerIntPair P; |
99 | P.setFromOpaqueValue(V); |
100 | return P; |
101 | } |
102 | |
103 | // Allow PointerIntPairs to be created from const void * if and only if the |
104 | // pointer type could be created from a const void *. |
105 | static PointerIntPair getFromOpaqueValue(const void *V) { |
106 | (void)PtrTraits::getFromVoidPointer(V); |
107 | return getFromOpaqueValue(const_cast<void *>(V)); |
108 | } |
109 | |
110 | bool operator==(const PointerIntPair &RHS) const { |
111 | return Value == RHS.Value; |
112 | } |
113 | |
114 | bool operator!=(const PointerIntPair &RHS) const { |
115 | return Value != RHS.Value; |
116 | } |
117 | |
118 | bool operator<(const PointerIntPair &RHS) const { return Value < RHS.Value; } |
119 | bool operator>(const PointerIntPair &RHS) const { return Value > RHS.Value; } |
120 | |
121 | bool operator<=(const PointerIntPair &RHS) const { |
122 | return Value <= RHS.Value; |
123 | } |
124 | |
125 | bool operator>=(const PointerIntPair &RHS) const { |
126 | return Value >= RHS.Value; |
127 | } |
128 | }; |
129 | |
130 | // Specialize is_trivially_copyable to avoid limitation of llvm::is_trivially_copyable |
131 | // when compiled with gcc 4.9. |
132 | template <typename PointerTy, unsigned IntBits, typename IntType, |
133 | typename PtrTraits, |
134 | typename Info> |
135 | struct is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>> : std::true_type { |
136 | #ifdef HAVE_STD_IS_TRIVIALLY_COPYABLE |
137 | static_assert(std::is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>>::value, |
138 | "inconsistent behavior between llvm:: and std:: implementation of is_trivially_copyable"); |
139 | #endif |
140 | }; |
141 | |
142 | |
143 | template <typename PointerT, unsigned IntBits, typename PtrTraits> |
144 | struct PointerIntPairInfo { |
145 | static_assert(PtrTraits::NumLowBitsAvailable < |
146 | std::numeric_limits<uintptr_t>::digits, |
147 | "cannot use a pointer type that has all bits free"); |
148 | static_assert(IntBits <= PtrTraits::NumLowBitsAvailable, |
149 | "PointerIntPair with integer size too large for pointer"); |
150 | enum MaskAndShiftConstants : uintptr_t { |
151 | /// PointerBitMask - The bits that come from the pointer. |
152 | PointerBitMask = |
153 | ~(uintptr_t)(((intptr_t)1 << PtrTraits::NumLowBitsAvailable) - 1), |
154 | |
155 | /// IntShift - The number of low bits that we reserve for other uses, and |
156 | /// keep zero. |
157 | IntShift = (uintptr_t)PtrTraits::NumLowBitsAvailable - IntBits, |
158 | |
159 | /// IntMask - This is the unshifted mask for valid bits of the int type. |
160 | IntMask = (uintptr_t)(((intptr_t)1 << IntBits) - 1), |
161 | |
162 | // ShiftedIntMask - This is the bits for the integer shifted in place. |
163 | ShiftedIntMask = (uintptr_t)(IntMask << IntShift) |
164 | }; |
165 | |
166 | static PointerT getPointer(intptr_t Value) { |
167 | return PtrTraits::getFromVoidPointer( |
168 | reinterpret_cast<void *>(Value & PointerBitMask)); |
169 | } |
170 | |
171 | static intptr_t getInt(intptr_t Value) { |
172 | return (Value >> IntShift) & IntMask; |
173 | } |
174 | |
175 | static intptr_t updatePointer(intptr_t OrigValue, PointerT Ptr) { |
176 | intptr_t PtrWord = |
177 | reinterpret_cast<intptr_t>(PtrTraits::getAsVoidPointer(Ptr)); |
178 | assert((PtrWord & ~PointerBitMask) == 0 &&(((PtrWord & ~PointerBitMask) == 0 && "Pointer is not sufficiently aligned" ) ? static_cast<void> (0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/ADT/PointerIntPair.h" , 179, __PRETTY_FUNCTION__)) |
179 | "Pointer is not sufficiently aligned")(((PtrWord & ~PointerBitMask) == 0 && "Pointer is not sufficiently aligned" ) ? static_cast<void> (0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/ADT/PointerIntPair.h" , 179, __PRETTY_FUNCTION__)); |
180 | // Preserve all low bits, just update the pointer. |
181 | return PtrWord | (OrigValue & ~PointerBitMask); |
182 | } |
183 | |
184 | static intptr_t updateInt(intptr_t OrigValue, intptr_t Int) { |
185 | intptr_t IntWord = static_cast<intptr_t>(Int); |
186 | assert((IntWord & ~IntMask) == 0 && "Integer too large for field")(((IntWord & ~IntMask) == 0 && "Integer too large for field" ) ? static_cast<void> (0) : __assert_fail ("(IntWord & ~IntMask) == 0 && \"Integer too large for field\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/ADT/PointerIntPair.h" , 186, __PRETTY_FUNCTION__)); |
187 | |
188 | // Preserve all bits other than the ones we are updating. |
189 | return (OrigValue & ~ShiftedIntMask) | IntWord << IntShift; |
190 | } |
191 | }; |
192 | |
193 | // Provide specialization of DenseMapInfo for PointerIntPair. |
194 | template <typename PointerTy, unsigned IntBits, typename IntType> |
195 | struct DenseMapInfo<PointerIntPair<PointerTy, IntBits, IntType>> { |
196 | using Ty = PointerIntPair<PointerTy, IntBits, IntType>; |
197 | |
198 | static Ty getEmptyKey() { |
199 | uintptr_t Val = static_cast<uintptr_t>(-1); |
200 | Val <<= PointerLikeTypeTraits<Ty>::NumLowBitsAvailable; |
201 | return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val)); |
202 | } |
203 | |
204 | static Ty getTombstoneKey() { |
205 | uintptr_t Val = static_cast<uintptr_t>(-2); |
206 | Val <<= PointerLikeTypeTraits<PointerTy>::NumLowBitsAvailable; |
207 | return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val)); |
208 | } |
209 | |
210 | static unsigned getHashValue(Ty V) { |
211 | uintptr_t IV = reinterpret_cast<uintptr_t>(V.getOpaqueValue()); |
212 | return unsigned(IV) ^ unsigned(IV >> 9); |
213 | } |
214 | |
215 | static bool isEqual(const Ty &LHS, const Ty &RHS) { return LHS == RHS; } |
216 | }; |
217 | |
218 | // Teach SmallPtrSet that PointerIntPair is "basically a pointer". |
219 | template <typename PointerTy, unsigned IntBits, typename IntType, |
220 | typename PtrTraits> |
221 | struct PointerLikeTypeTraits< |
222 | PointerIntPair<PointerTy, IntBits, IntType, PtrTraits>> { |
223 | static inline void * |
224 | getAsVoidPointer(const PointerIntPair<PointerTy, IntBits, IntType> &P) { |
225 | return P.getOpaqueValue(); |
226 | } |
227 | |
228 | static inline PointerIntPair<PointerTy, IntBits, IntType> |
229 | getFromVoidPointer(void *P) { |
230 | return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P); |
231 | } |
232 | |
233 | static inline PointerIntPair<PointerTy, IntBits, IntType> |
234 | getFromVoidPointer(const void *P) { |
235 | return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P); |
236 | } |
237 | |
238 | static constexpr int NumLowBitsAvailable = |
239 | PtrTraits::NumLowBitsAvailable - IntBits; |
240 | }; |
241 | |
242 | } // end namespace llvm |
243 | |
244 | #endif // LLVM_ADT_POINTERINTPAIR_H |
1 | //===- llvm/Support/Casting.h - Allow flexible, checked, casts --*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file defines the isa<X>(), cast<X>(), dyn_cast<X>(), cast_or_null<X>(), |
10 | // and dyn_cast_or_null<X>() templates. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_SUPPORT_CASTING_H |
15 | #define LLVM_SUPPORT_CASTING_H |
16 | |
17 | #include "llvm/Support/Compiler.h" |
18 | #include "llvm/Support/type_traits.h" |
19 | #include <cassert> |
20 | #include <memory> |
21 | #include <type_traits> |
22 | |
23 | namespace llvm { |
24 | |
25 | //===----------------------------------------------------------------------===// |
26 | // isa<x> Support Templates |
27 | //===----------------------------------------------------------------------===// |
28 | |
29 | // Define a template that can be specialized by smart pointers to reflect the |
30 | // fact that they are automatically dereferenced, and are not involved with the |
31 | // template selection process... the default implementation is a noop. |
32 | // |
33 | template<typename From> struct simplify_type { |
34 | using SimpleType = From; // The real type this represents... |
35 | |
36 | // An accessor to get the real value... |
37 | static SimpleType &getSimplifiedValue(From &Val) { return Val; } |
38 | }; |
39 | |
40 | template<typename From> struct simplify_type<const From> { |
41 | using NonConstSimpleType = typename simplify_type<From>::SimpleType; |
42 | using SimpleType = |
43 | typename add_const_past_pointer<NonConstSimpleType>::type; |
44 | using RetType = |
45 | typename add_lvalue_reference_if_not_pointer<SimpleType>::type; |
46 | |
47 | static RetType getSimplifiedValue(const From& Val) { |
48 | return simplify_type<From>::getSimplifiedValue(const_cast<From&>(Val)); |
49 | } |
50 | }; |
51 | |
52 | // The core of the implementation of isa<X> is here; To and From should be |
53 | // the names of classes. This template can be specialized to customize the |
54 | // implementation of isa<> without rewriting it from scratch. |
55 | template <typename To, typename From, typename Enabler = void> |
56 | struct isa_impl { |
57 | static inline bool doit(const From &Val) { |
58 | return To::classof(&Val); |
59 | } |
60 | }; |
61 | |
62 | /// Always allow upcasts, and perform no dynamic check for them. |
63 | template <typename To, typename From> |
64 | struct isa_impl<To, From, std::enable_if_t<std::is_base_of<To, From>::value>> { |
65 | static inline bool doit(const From &) { return true; } |
66 | }; |
67 | |
68 | template <typename To, typename From> struct isa_impl_cl { |
69 | static inline bool doit(const From &Val) { |
70 | return isa_impl<To, From>::doit(Val); |
71 | } |
72 | }; |
73 | |
74 | template <typename To, typename From> struct isa_impl_cl<To, const From> { |
75 | static inline bool doit(const From &Val) { |
76 | return isa_impl<To, From>::doit(Val); |
77 | } |
78 | }; |
79 | |
80 | template <typename To, typename From> |
81 | struct isa_impl_cl<To, const std::unique_ptr<From>> { |
82 | static inline bool doit(const std::unique_ptr<From> &Val) { |
83 | assert(Val && "isa<> used on a null pointer")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 83, __PRETTY_FUNCTION__)); |
84 | return isa_impl_cl<To, From>::doit(*Val); |
85 | } |
86 | }; |
87 | |
88 | template <typename To, typename From> struct isa_impl_cl<To, From*> { |
89 | static inline bool doit(const From *Val) { |
90 | assert(Val && "isa<> used on a null pointer")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 90, __PRETTY_FUNCTION__)); |
91 | return isa_impl<To, From>::doit(*Val); |
92 | } |
93 | }; |
94 | |
95 | template <typename To, typename From> struct isa_impl_cl<To, From*const> { |
96 | static inline bool doit(const From *Val) { |
97 | assert(Val && "isa<> used on a null pointer")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 97, __PRETTY_FUNCTION__)); |
98 | return isa_impl<To, From>::doit(*Val); |
99 | } |
100 | }; |
101 | |
102 | template <typename To, typename From> struct isa_impl_cl<To, const From*> { |
103 | static inline bool doit(const From *Val) { |
104 | assert(Val && "isa<> used on a null pointer")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 104, __PRETTY_FUNCTION__)); |
105 | return isa_impl<To, From>::doit(*Val); |
106 | } |
107 | }; |
108 | |
109 | template <typename To, typename From> struct isa_impl_cl<To, const From*const> { |
110 | static inline bool doit(const From *Val) { |
111 | assert(Val && "isa<> used on a null pointer")((Val && "isa<> used on a null pointer") ? static_cast <void> (0) : __assert_fail ("Val && \"isa<> used on a null pointer\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 111, __PRETTY_FUNCTION__)); |
112 | return isa_impl<To, From>::doit(*Val); |
113 | } |
114 | }; |
115 | |
116 | template<typename To, typename From, typename SimpleFrom> |
117 | struct isa_impl_wrap { |
118 | // When From != SimplifiedType, we can simplify the type some more by using |
119 | // the simplify_type template. |
120 | static bool doit(const From &Val) { |
121 | return isa_impl_wrap<To, SimpleFrom, |
122 | typename simplify_type<SimpleFrom>::SimpleType>::doit( |
123 | simplify_type<const From>::getSimplifiedValue(Val)); |
124 | } |
125 | }; |
126 | |
127 | template<typename To, typename FromTy> |
128 | struct isa_impl_wrap<To, FromTy, FromTy> { |
129 | // When From == SimpleType, we are as simple as we are going to get. |
130 | static bool doit(const FromTy &Val) { |
131 | return isa_impl_cl<To,FromTy>::doit(Val); |
132 | } |
133 | }; |
134 | |
135 | // isa<X> - Return true if the parameter to the template is an instance of one |
136 | // of the template type arguments. Used like this: |
137 | // |
138 | // if (isa<Type>(myVal)) { ... } |
139 | // if (isa<Type0, Type1, Type2>(myVal)) { ... } |
140 | // |
141 | template <class X, class Y> LLVM_NODISCARD[[clang::warn_unused_result]] inline bool isa(const Y &Val) { |
142 | return isa_impl_wrap<X, const Y, |
143 | typename simplify_type<const Y>::SimpleType>::doit(Val); |
144 | } |
145 | |
146 | template <typename First, typename Second, typename... Rest, typename Y> |
147 | LLVM_NODISCARD[[clang::warn_unused_result]] inline bool isa(const Y &Val) { |
148 | return isa<First>(Val) || isa<Second, Rest...>(Val); |
149 | } |
150 | |
151 | // isa_and_nonnull<X> - Functionally identical to isa, except that a null value |
152 | // is accepted. |
153 | // |
154 | template <typename... X, class Y> |
155 | LLVM_NODISCARD[[clang::warn_unused_result]] inline bool isa_and_nonnull(const Y &Val) { |
156 | if (!Val) |
157 | return false; |
158 | return isa<X...>(Val); |
159 | } |
160 | |
161 | //===----------------------------------------------------------------------===// |
162 | // cast<x> Support Templates |
163 | //===----------------------------------------------------------------------===// |
164 | |
165 | template<class To, class From> struct cast_retty; |
166 | |
167 | // Calculate what type the 'cast' function should return, based on a requested |
168 | // type of To and a source type of From. |
169 | template<class To, class From> struct cast_retty_impl { |
170 | using ret_type = To &; // Normal case, return Ty& |
171 | }; |
172 | template<class To, class From> struct cast_retty_impl<To, const From> { |
173 | using ret_type = const To &; // Normal case, return Ty& |
174 | }; |
175 | |
176 | template<class To, class From> struct cast_retty_impl<To, From*> { |
177 | using ret_type = To *; // Pointer arg case, return Ty* |
178 | }; |
179 | |
180 | template<class To, class From> struct cast_retty_impl<To, const From*> { |
181 | using ret_type = const To *; // Constant pointer arg case, return const Ty* |
182 | }; |
183 | |
184 | template<class To, class From> struct cast_retty_impl<To, const From*const> { |
185 | using ret_type = const To *; // Constant pointer arg case, return const Ty* |
186 | }; |
187 | |
188 | template <class To, class From> |
189 | struct cast_retty_impl<To, std::unique_ptr<From>> { |
190 | private: |
191 | using PointerType = typename cast_retty_impl<To, From *>::ret_type; |
192 | using ResultType = std::remove_pointer_t<PointerType>; |
193 | |
194 | public: |
195 | using ret_type = std::unique_ptr<ResultType>; |
196 | }; |
197 | |
198 | template<class To, class From, class SimpleFrom> |
199 | struct cast_retty_wrap { |
200 | // When the simplified type and the from type are not the same, use the type |
201 | // simplifier to reduce the type, then reuse cast_retty_impl to get the |
202 | // resultant type. |
203 | using ret_type = typename cast_retty<To, SimpleFrom>::ret_type; |
204 | }; |
205 | |
206 | template<class To, class FromTy> |
207 | struct cast_retty_wrap<To, FromTy, FromTy> { |
208 | // When the simplified type is equal to the from type, use it directly. |
209 | using ret_type = typename cast_retty_impl<To,FromTy>::ret_type; |
210 | }; |
211 | |
212 | template<class To, class From> |
213 | struct cast_retty { |
214 | using ret_type = typename cast_retty_wrap< |
215 | To, From, typename simplify_type<From>::SimpleType>::ret_type; |
216 | }; |
217 | |
218 | // Ensure the non-simple values are converted using the simplify_type template |
219 | // that may be specialized by smart pointers... |
220 | // |
221 | template<class To, class From, class SimpleFrom> struct cast_convert_val { |
222 | // This is not a simple type, use the template to simplify it... |
223 | static typename cast_retty<To, From>::ret_type doit(From &Val) { |
224 | return cast_convert_val<To, SimpleFrom, |
225 | typename simplify_type<SimpleFrom>::SimpleType>::doit( |
226 | simplify_type<From>::getSimplifiedValue(Val)); |
227 | } |
228 | }; |
229 | |
230 | template<class To, class FromTy> struct cast_convert_val<To,FromTy,FromTy> { |
231 | // This _is_ a simple type, just cast it. |
232 | static typename cast_retty<To, FromTy>::ret_type doit(const FromTy &Val) { |
233 | typename cast_retty<To, FromTy>::ret_type Res2 |
234 | = (typename cast_retty<To, FromTy>::ret_type)const_cast<FromTy&>(Val); |
235 | return Res2; |
236 | } |
237 | }; |
238 | |
239 | template <class X> struct is_simple_type { |
240 | static const bool value = |
241 | std::is_same<X, typename simplify_type<X>::SimpleType>::value; |
242 | }; |
243 | |
244 | // cast<X> - Return the argument parameter cast to the specified type. This |
245 | // casting operator asserts that the type is correct, so it does not return null |
246 | // on failure. It does not allow a null argument (use cast_or_null for that). |
247 | // It is typically used like this: |
248 | // |
249 | // cast<Instruction>(myVal)->getParent() |
250 | // |
251 | template <class X, class Y> |
252 | inline std::enable_if_t<!is_simple_type<Y>::value, |
253 | typename cast_retty<X, const Y>::ret_type> |
254 | cast(const Y &Val) { |
255 | assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!")((isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 255, __PRETTY_FUNCTION__)); |
256 | return cast_convert_val< |
257 | X, const Y, typename simplify_type<const Y>::SimpleType>::doit(Val); |
258 | } |
259 | |
260 | template <class X, class Y> |
261 | inline typename cast_retty<X, Y>::ret_type cast(Y &Val) { |
262 | assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!")((isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 262, __PRETTY_FUNCTION__)); |
263 | return cast_convert_val<X, Y, |
264 | typename simplify_type<Y>::SimpleType>::doit(Val); |
265 | } |
266 | |
267 | template <class X, class Y> |
268 | inline typename cast_retty<X, Y *>::ret_type cast(Y *Val) { |
269 | assert(isa<X>(Val) && "cast<Ty>() argument of incompatible type!")((isa<X>(Val) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 269, __PRETTY_FUNCTION__)); |
270 | return cast_convert_val<X, Y*, |
271 | typename simplify_type<Y*>::SimpleType>::doit(Val); |
272 | } |
273 | |
274 | template <class X, class Y> |
275 | inline typename cast_retty<X, std::unique_ptr<Y>>::ret_type |
276 | cast(std::unique_ptr<Y> &&Val) { |
277 | assert(isa<X>(Val.get()) && "cast<Ty>() argument of incompatible type!")((isa<X>(Val.get()) && "cast<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val.get()) && \"cast<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 277, __PRETTY_FUNCTION__)); |
278 | using ret_type = typename cast_retty<X, std::unique_ptr<Y>>::ret_type; |
279 | return ret_type( |
280 | cast_convert_val<X, Y *, typename simplify_type<Y *>::SimpleType>::doit( |
281 | Val.release())); |
282 | } |
283 | |
284 | // cast_or_null<X> - Functionally identical to cast, except that a null value is |
285 | // accepted. |
286 | // |
287 | template <class X, class Y> |
288 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t< |
289 | !is_simple_type<Y>::value, typename cast_retty<X, const Y>::ret_type> |
290 | cast_or_null(const Y &Val) { |
291 | if (!Val) |
292 | return nullptr; |
293 | assert(isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!")((isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 293, __PRETTY_FUNCTION__)); |
294 | return cast<X>(Val); |
295 | } |
296 | |
297 | template <class X, class Y> |
298 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t<!is_simple_type<Y>::value, |
299 | typename cast_retty<X, Y>::ret_type> |
300 | cast_or_null(Y &Val) { |
301 | if (!Val) |
302 | return nullptr; |
303 | assert(isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!")((isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 303, __PRETTY_FUNCTION__)); |
304 | return cast<X>(Val); |
305 | } |
306 | |
307 | template <class X, class Y> |
308 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y *>::ret_type |
309 | cast_or_null(Y *Val) { |
310 | if (!Val) return nullptr; |
311 | assert(isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!")((isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!" ) ? static_cast<void> (0) : __assert_fail ("isa<X>(Val) && \"cast_or_null<Ty>() argument of incompatible type!\"" , "/build/llvm-toolchain-snapshot-12~++20201201111133+ea8c8a50976/llvm/include/llvm/Support/Casting.h" , 311, __PRETTY_FUNCTION__)); |
312 | return cast<X>(Val); |
313 | } |
314 | |
315 | template <class X, class Y> |
316 | inline typename cast_retty<X, std::unique_ptr<Y>>::ret_type |
317 | cast_or_null(std::unique_ptr<Y> &&Val) { |
318 | if (!Val) |
319 | return nullptr; |
320 | return cast<X>(std::move(Val)); |
321 | } |
322 | |
323 | // dyn_cast<X> - Return the argument parameter cast to the specified type. This |
324 | // casting operator returns null if the argument is of the wrong type, so it can |
325 | // be used to test for a type as well as cast if successful. This should be |
326 | // used in the context of an if statement like this: |
327 | // |
328 | // if (const Instruction *I = dyn_cast<Instruction>(myVal)) { ... } |
329 | // |
330 | |
331 | template <class X, class Y> |
332 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t< |
333 | !is_simple_type<Y>::value, typename cast_retty<X, const Y>::ret_type> |
334 | dyn_cast(const Y &Val) { |
335 | return isa<X>(Val) ? cast<X>(Val) : nullptr; |
336 | } |
337 | |
338 | template <class X, class Y> |
339 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y>::ret_type dyn_cast(Y &Val) { |
340 | return isa<X>(Val) ? cast<X>(Val) : nullptr; |
341 | } |
342 | |
343 | template <class X, class Y> |
344 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y *>::ret_type dyn_cast(Y *Val) { |
345 | return isa<X>(Val) ? cast<X>(Val) : nullptr; |
346 | } |
347 | |
348 | // dyn_cast_or_null<X> - Functionally identical to dyn_cast, except that a null |
349 | // value is accepted. |
350 | // |
351 | template <class X, class Y> |
352 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t< |
353 | !is_simple_type<Y>::value, typename cast_retty<X, const Y>::ret_type> |
354 | dyn_cast_or_null(const Y &Val) { |
355 | return (Val && isa<X>(Val)) ? cast<X>(Val) : nullptr; |
356 | } |
357 | |
358 | template <class X, class Y> |
359 | LLVM_NODISCARD[[clang::warn_unused_result]] inline std::enable_if_t<!is_simple_type<Y>::value, |
360 | typename cast_retty<X, Y>::ret_type> |
361 | dyn_cast_or_null(Y &Val) { |
362 | return (Val && isa<X>(Val)) ? cast<X>(Val) : nullptr; |
363 | } |
364 | |
365 | template <class X, class Y> |
366 | LLVM_NODISCARD[[clang::warn_unused_result]] inline typename cast_retty<X, Y *>::ret_type |
367 | dyn_cast_or_null(Y *Val) { |
368 | return (Val && isa<X>(Val)) ? cast<X>(Val) : nullptr; |
369 | } |
370 | |
371 | // unique_dyn_cast<X> - Given a unique_ptr<Y>, try to return a unique_ptr<X>, |
372 | // taking ownership of the input pointer iff isa<X>(Val) is true. If the |
373 | // cast is successful, From refers to nullptr on exit and the casted value |
374 | // is returned. If the cast is unsuccessful, the function returns nullptr |
375 | // and From is unchanged. |
376 | template <class X, class Y> |
377 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast(std::unique_ptr<Y> &Val) |
378 | -> decltype(cast<X>(Val)) { |
379 | if (!isa<X>(Val)) |
380 | return nullptr; |
381 | return cast<X>(std::move(Val)); |
382 | } |
383 | |
384 | template <class X, class Y> |
385 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast(std::unique_ptr<Y> &&Val) { |
386 | return unique_dyn_cast<X, Y>(Val); |
387 | } |
388 | |
389 | // dyn_cast_or_null<X> - Functionally identical to unique_dyn_cast, except that |
390 | // a null value is accepted. |
391 | template <class X, class Y> |
392 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast_or_null(std::unique_ptr<Y> &Val) |
393 | -> decltype(cast<X>(Val)) { |
394 | if (!Val) |
395 | return nullptr; |
396 | return unique_dyn_cast<X, Y>(Val); |
397 | } |
398 | |
399 | template <class X, class Y> |
400 | LLVM_NODISCARD[[clang::warn_unused_result]] inline auto unique_dyn_cast_or_null(std::unique_ptr<Y> &&Val) { |
401 | return unique_dyn_cast_or_null<X, Y>(Val); |
402 | } |
403 | |
404 | } // end namespace llvm |
405 | |
406 | #endif // LLVM_SUPPORT_CASTING_H |
1 | //===-- OpenCLImageTypes.def - Metadata about BuiltinTypes ------*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // This file extends builtin types database with OpenCL image singleton types. |
9 | // Custom code should define one of those three macros: |
10 | // GENERIC_IMAGE_TYPE(Type, Id) - a generic image with its Id without an |
11 | // access type |
12 | // IMAGE_TYPE(Type, Id, SingletonId, AccessType, CGSuffix) - an image type |
13 | // with given ID, singleton ID access type and a codegen suffix |
14 | // GENERIC_IMAGE_TYPE_EXT(Type, Id, Ext) - a generic image with its Id and |
15 | // required extension without an access type |
16 | |
17 | #ifdef GENERIC_IMAGE_TYPE |
18 | |
19 | #define IMAGE_READ_TYPE(Type, Id, Ext) GENERIC_IMAGE_TYPE(Type, Id) |
20 | #define IMAGE_WRITE_TYPE(Type, Id, Ext) |
21 | #define IMAGE_READ_WRITE_TYPE(Type, Id, Ext) |
22 | |
23 | #elif defined(GENERIC_IMAGE_TYPE_EXT) |
24 | #define IMAGE_READ_TYPE(Type, Id, Ext) GENERIC_IMAGE_TYPE_EXT(Type, Id##ROTy, Ext) |
25 | #define IMAGE_WRITE_TYPE(Type, Id, Ext) GENERIC_IMAGE_TYPE_EXT(Type, Id##WOTy, Ext) |
26 | #define IMAGE_READ_WRITE_TYPE(Type, Id, Ext) GENERIC_IMAGE_TYPE_EXT(Type, Id##RWTy, Ext) |
27 | |
28 | #else |
29 | #ifndef IMAGE_READ_TYPE |
30 | #define IMAGE_READ_TYPE(Type, Id, Ext) \ |
31 | IMAGE_TYPE(Type, Id##RO, Id##ROTy, read_only, ro) |
32 | #endif |
33 | #ifndef IMAGE_WRITE_TYPE |
34 | #define IMAGE_WRITE_TYPE(Type, Id, Ext) \ |
35 | IMAGE_TYPE(Type, Id##WO, Id##WOTy, write_only, wo) |
36 | #endif |
37 | #ifndef IMAGE_READ_WRITE_TYPE |
38 | #define IMAGE_READ_WRITE_TYPE(Type, Id, Ext) \ |
39 | IMAGE_TYPE(Type, Id##RW, Id##RWTy, read_write, rw) |
40 | #endif |
41 | |
42 | #endif |
43 | |
44 | IMAGE_READ_TYPE(image1d, OCLImage1d, "") |
45 | IMAGE_READ_TYPE(image1d_array, OCLImage1dArray, "") |
46 | IMAGE_READ_TYPE(image1d_buffer, OCLImage1dBuffer, "") |
47 | IMAGE_READ_TYPE(image2d, OCLImage2d, "") |
48 | IMAGE_READ_TYPE(image2d_array, OCLImage2dArray, "") |
49 | IMAGE_READ_TYPE(image2d_depth, OCLImage2dDepth, "") |
50 | IMAGE_READ_TYPE(image2d_array_depth, OCLImage2dArrayDepth, "") |
51 | IMAGE_READ_TYPE(image2d_msaa, OCLImage2dMSAA, "cl_khr_gl_msaa_sharing") |
52 | IMAGE_READ_TYPE(image2d_array_msaa, OCLImage2dArrayMSAA, "cl_khr_gl_msaa_sharing") |
53 | IMAGE_READ_TYPE(image2d_msaa_depth, OCLImage2dMSAADepth, "cl_khr_gl_msaa_sharing") |
54 | IMAGE_READ_TYPE(image2d_array_msaa_depth, OCLImage2dArrayMSAADepth, "cl_khr_gl_msaa_sharing") |
55 | IMAGE_READ_TYPE(image3d, OCLImage3d, "") |
56 | |
57 | IMAGE_WRITE_TYPE(image1d, OCLImage1d, "") |
58 | IMAGE_WRITE_TYPE(image1d_array, OCLImage1dArray, "") |
59 | IMAGE_WRITE_TYPE(image1d_buffer, OCLImage1dBuffer, "") |
60 | IMAGE_WRITE_TYPE(image2d, OCLImage2d, "") |
61 | IMAGE_WRITE_TYPE(image2d_array, OCLImage2dArray, "") |
62 | IMAGE_WRITE_TYPE(image2d_depth, OCLImage2dDepth, "") |
63 | IMAGE_WRITE_TYPE(image2d_array_depth, OCLImage2dArrayDepth, "") |
64 | IMAGE_WRITE_TYPE(image2d_msaa, OCLImage2dMSAA, "cl_khr_gl_msaa_sharing") |
65 | IMAGE_WRITE_TYPE(image2d_array_msaa, OCLImage2dArrayMSAA, "cl_khr_gl_msaa_sharing") |
66 | IMAGE_WRITE_TYPE(image2d_msaa_depth, OCLImage2dMSAADepth, "cl_khr_gl_msaa_sharing") |
67 | IMAGE_WRITE_TYPE(image2d_array_msaa_depth, OCLImage2dArrayMSAADepth, "cl_khr_gl_msaa_sharing") |
68 | IMAGE_WRITE_TYPE(image3d, OCLImage3d, "cl_khr_3d_image_writes") |
69 | |
70 | IMAGE_READ_WRITE_TYPE(image1d, OCLImage1d, "") |
71 | IMAGE_READ_WRITE_TYPE(image1d_array, OCLImage1dArray, "") |
72 | IMAGE_READ_WRITE_TYPE(image1d_buffer, OCLImage1dBuffer, "") |
73 | IMAGE_READ_WRITE_TYPE(image2d, OCLImage2d, "") |
74 | IMAGE_READ_WRITE_TYPE(image2d_array, OCLImage2dArray, "") |
75 | IMAGE_READ_WRITE_TYPE(image2d_depth, OCLImage2dDepth, "") |
76 | IMAGE_READ_WRITE_TYPE(image2d_array_depth, OCLImage2dArrayDepth, "") |
77 | IMAGE_READ_WRITE_TYPE(image2d_msaa, OCLImage2dMSAA, "cl_khr_gl_msaa_sharing") |
78 | IMAGE_READ_WRITE_TYPE(image2d_array_msaa, OCLImage2dArrayMSAA, "cl_khr_gl_msaa_sharing") |
79 | IMAGE_READ_WRITE_TYPE(image2d_msaa_depth, OCLImage2dMSAADepth, "cl_khr_gl_msaa_sharing") |
80 | IMAGE_READ_WRITE_TYPE(image2d_array_msaa_depth, OCLImage2dArrayMSAADepth, "cl_khr_gl_msaa_sharing") |
81 | IMAGE_READ_WRITE_TYPE(image3d, OCLImage3d, "") |
82 | |
83 | #undef IMAGE_TYPE |
84 | #undef GENERIC_IMAGE_TYPE |
85 | #undef IMAGE_READ_TYPE |
86 | #undef IMAGE_WRITE_TYPE |
87 | #undef IMAGE_READ_WRITE_TYPE |