File: | clang/lib/Sema/SemaTemplateInstantiate.cpp |
Warning: | line 2238, column 41 Called C++ object pointer is null |
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1 | //===------- SemaTemplateInstantiate.cpp - C++ Template Instantiation ------===/ | ||||
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 implements C++ template instantiation. | ||||
9 | // | ||||
10 | //===----------------------------------------------------------------------===/ | ||||
11 | |||||
12 | #include "clang/Sema/SemaInternal.h" | ||||
13 | #include "TreeTransform.h" | ||||
14 | #include "clang/AST/ASTConsumer.h" | ||||
15 | #include "clang/AST/ASTContext.h" | ||||
16 | #include "clang/AST/ASTLambda.h" | ||||
17 | #include "clang/AST/ASTMutationListener.h" | ||||
18 | #include "clang/AST/DeclTemplate.h" | ||||
19 | #include "clang/AST/Expr.h" | ||||
20 | #include "clang/AST/PrettyDeclStackTrace.h" | ||||
21 | #include "clang/Basic/LangOptions.h" | ||||
22 | #include "clang/Basic/Stack.h" | ||||
23 | #include "clang/Sema/DeclSpec.h" | ||||
24 | #include "clang/Sema/Initialization.h" | ||||
25 | #include "clang/Sema/Lookup.h" | ||||
26 | #include "clang/Sema/Template.h" | ||||
27 | #include "clang/Sema/TemplateDeduction.h" | ||||
28 | #include "clang/Sema/TemplateInstCallback.h" | ||||
29 | #include "llvm/Support/TimeProfiler.h" | ||||
30 | |||||
31 | using namespace clang; | ||||
32 | using namespace sema; | ||||
33 | |||||
34 | //===----------------------------------------------------------------------===/ | ||||
35 | // Template Instantiation Support | ||||
36 | //===----------------------------------------------------------------------===/ | ||||
37 | |||||
38 | /// Retrieve the template argument list(s) that should be used to | ||||
39 | /// instantiate the definition of the given declaration. | ||||
40 | /// | ||||
41 | /// \param D the declaration for which we are computing template instantiation | ||||
42 | /// arguments. | ||||
43 | /// | ||||
44 | /// \param Innermost if non-NULL, the innermost template argument list. | ||||
45 | /// | ||||
46 | /// \param RelativeToPrimary true if we should get the template | ||||
47 | /// arguments relative to the primary template, even when we're | ||||
48 | /// dealing with a specialization. This is only relevant for function | ||||
49 | /// template specializations. | ||||
50 | /// | ||||
51 | /// \param Pattern If non-NULL, indicates the pattern from which we will be | ||||
52 | /// instantiating the definition of the given declaration, \p D. This is | ||||
53 | /// used to determine the proper set of template instantiation arguments for | ||||
54 | /// friend function template specializations. | ||||
55 | MultiLevelTemplateArgumentList | ||||
56 | Sema::getTemplateInstantiationArgs(NamedDecl *D, | ||||
57 | const TemplateArgumentList *Innermost, | ||||
58 | bool RelativeToPrimary, | ||||
59 | const FunctionDecl *Pattern) { | ||||
60 | // Accumulate the set of template argument lists in this structure. | ||||
61 | MultiLevelTemplateArgumentList Result; | ||||
62 | |||||
63 | if (Innermost) | ||||
64 | Result.addOuterTemplateArguments(Innermost); | ||||
65 | |||||
66 | DeclContext *Ctx = dyn_cast<DeclContext>(D); | ||||
67 | if (!Ctx) { | ||||
68 | Ctx = D->getDeclContext(); | ||||
69 | |||||
70 | // Add template arguments from a variable template instantiation. For a | ||||
71 | // class-scope explicit specialization, there are no template arguments | ||||
72 | // at this level, but there may be enclosing template arguments. | ||||
73 | VarTemplateSpecializationDecl *Spec = | ||||
74 | dyn_cast<VarTemplateSpecializationDecl>(D); | ||||
75 | if (Spec && !Spec->isClassScopeExplicitSpecialization()) { | ||||
76 | // We're done when we hit an explicit specialization. | ||||
77 | if (Spec->getSpecializationKind() == TSK_ExplicitSpecialization && | ||||
78 | !isa<VarTemplatePartialSpecializationDecl>(Spec)) | ||||
79 | return Result; | ||||
80 | |||||
81 | Result.addOuterTemplateArguments(&Spec->getTemplateInstantiationArgs()); | ||||
82 | |||||
83 | // If this variable template specialization was instantiated from a | ||||
84 | // specialized member that is a variable template, we're done. | ||||
85 | assert(Spec->getSpecializedTemplate() && "No variable template?")((Spec->getSpecializedTemplate() && "No variable template?" ) ? static_cast<void> (0) : __assert_fail ("Spec->getSpecializedTemplate() && \"No variable template?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 85, __PRETTY_FUNCTION__)); | ||||
86 | llvm::PointerUnion<VarTemplateDecl*, | ||||
87 | VarTemplatePartialSpecializationDecl*> Specialized | ||||
88 | = Spec->getSpecializedTemplateOrPartial(); | ||||
89 | if (VarTemplatePartialSpecializationDecl *Partial = | ||||
90 | Specialized.dyn_cast<VarTemplatePartialSpecializationDecl *>()) { | ||||
91 | if (Partial->isMemberSpecialization()) | ||||
92 | return Result; | ||||
93 | } else { | ||||
94 | VarTemplateDecl *Tmpl = Specialized.get<VarTemplateDecl *>(); | ||||
95 | if (Tmpl->isMemberSpecialization()) | ||||
96 | return Result; | ||||
97 | } | ||||
98 | } | ||||
99 | |||||
100 | // If we have a template template parameter with translation unit context, | ||||
101 | // then we're performing substitution into a default template argument of | ||||
102 | // this template template parameter before we've constructed the template | ||||
103 | // that will own this template template parameter. In this case, we | ||||
104 | // use empty template parameter lists for all of the outer templates | ||||
105 | // to avoid performing any substitutions. | ||||
106 | if (Ctx->isTranslationUnit()) { | ||||
107 | if (TemplateTemplateParmDecl *TTP | ||||
108 | = dyn_cast<TemplateTemplateParmDecl>(D)) { | ||||
109 | for (unsigned I = 0, N = TTP->getDepth() + 1; I != N; ++I) | ||||
110 | Result.addOuterTemplateArguments(None); | ||||
111 | return Result; | ||||
112 | } | ||||
113 | } | ||||
114 | } | ||||
115 | |||||
116 | while (!Ctx->isFileContext()) { | ||||
117 | // Add template arguments from a class template instantiation. | ||||
118 | ClassTemplateSpecializationDecl *Spec | ||||
119 | = dyn_cast<ClassTemplateSpecializationDecl>(Ctx); | ||||
120 | if (Spec && !Spec->isClassScopeExplicitSpecialization()) { | ||||
121 | // We're done when we hit an explicit specialization. | ||||
122 | if (Spec->getSpecializationKind() == TSK_ExplicitSpecialization && | ||||
123 | !isa<ClassTemplatePartialSpecializationDecl>(Spec)) | ||||
124 | break; | ||||
125 | |||||
126 | Result.addOuterTemplateArguments(&Spec->getTemplateInstantiationArgs()); | ||||
127 | |||||
128 | // If this class template specialization was instantiated from a | ||||
129 | // specialized member that is a class template, we're done. | ||||
130 | assert(Spec->getSpecializedTemplate() && "No class template?")((Spec->getSpecializedTemplate() && "No class template?" ) ? static_cast<void> (0) : __assert_fail ("Spec->getSpecializedTemplate() && \"No class template?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 130, __PRETTY_FUNCTION__)); | ||||
131 | if (Spec->getSpecializedTemplate()->isMemberSpecialization()) | ||||
132 | break; | ||||
133 | } | ||||
134 | // Add template arguments from a function template specialization. | ||||
135 | else if (FunctionDecl *Function = dyn_cast<FunctionDecl>(Ctx)) { | ||||
136 | if (!RelativeToPrimary && | ||||
137 | Function->getTemplateSpecializationKindForInstantiation() == | ||||
138 | TSK_ExplicitSpecialization) | ||||
139 | break; | ||||
140 | |||||
141 | if (const TemplateArgumentList *TemplateArgs | ||||
142 | = Function->getTemplateSpecializationArgs()) { | ||||
143 | // Add the template arguments for this specialization. | ||||
144 | Result.addOuterTemplateArguments(TemplateArgs); | ||||
145 | |||||
146 | // If this function was instantiated from a specialized member that is | ||||
147 | // a function template, we're done. | ||||
148 | assert(Function->getPrimaryTemplate() && "No function template?")((Function->getPrimaryTemplate() && "No function template?" ) ? static_cast<void> (0) : __assert_fail ("Function->getPrimaryTemplate() && \"No function template?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 148, __PRETTY_FUNCTION__)); | ||||
149 | if (Function->getPrimaryTemplate()->isMemberSpecialization()) | ||||
150 | break; | ||||
151 | |||||
152 | // If this function is a generic lambda specialization, we are done. | ||||
153 | if (isGenericLambdaCallOperatorSpecialization(Function)) | ||||
154 | break; | ||||
155 | |||||
156 | } else if (FunctionTemplateDecl *FunTmpl | ||||
157 | = Function->getDescribedFunctionTemplate()) { | ||||
158 | // Add the "injected" template arguments. | ||||
159 | Result.addOuterTemplateArguments(FunTmpl->getInjectedTemplateArgs()); | ||||
160 | } | ||||
161 | |||||
162 | // If this is a friend declaration and it declares an entity at | ||||
163 | // namespace scope, take arguments from its lexical parent | ||||
164 | // instead of its semantic parent, unless of course the pattern we're | ||||
165 | // instantiating actually comes from the file's context! | ||||
166 | if (Function->getFriendObjectKind() && | ||||
167 | Function->getDeclContext()->isFileContext() && | ||||
168 | (!Pattern || !Pattern->getLexicalDeclContext()->isFileContext())) { | ||||
169 | Ctx = Function->getLexicalDeclContext(); | ||||
170 | RelativeToPrimary = false; | ||||
171 | continue; | ||||
172 | } | ||||
173 | } else if (CXXRecordDecl *Rec = dyn_cast<CXXRecordDecl>(Ctx)) { | ||||
174 | if (ClassTemplateDecl *ClassTemplate = Rec->getDescribedClassTemplate()) { | ||||
175 | QualType T = ClassTemplate->getInjectedClassNameSpecialization(); | ||||
176 | const TemplateSpecializationType *TST = | ||||
177 | cast<TemplateSpecializationType>(Context.getCanonicalType(T)); | ||||
178 | Result.addOuterTemplateArguments( | ||||
179 | llvm::makeArrayRef(TST->getArgs(), TST->getNumArgs())); | ||||
180 | if (ClassTemplate->isMemberSpecialization()) | ||||
181 | break; | ||||
182 | } | ||||
183 | } | ||||
184 | |||||
185 | Ctx = Ctx->getParent(); | ||||
186 | RelativeToPrimary = false; | ||||
187 | } | ||||
188 | |||||
189 | return Result; | ||||
190 | } | ||||
191 | |||||
192 | bool Sema::CodeSynthesisContext::isInstantiationRecord() const { | ||||
193 | switch (Kind) { | ||||
194 | case TemplateInstantiation: | ||||
195 | case ExceptionSpecInstantiation: | ||||
196 | case DefaultTemplateArgumentInstantiation: | ||||
197 | case DefaultFunctionArgumentInstantiation: | ||||
198 | case ExplicitTemplateArgumentSubstitution: | ||||
199 | case DeducedTemplateArgumentSubstitution: | ||||
200 | case PriorTemplateArgumentSubstitution: | ||||
201 | case ConstraintsCheck: | ||||
202 | return true; | ||||
203 | |||||
204 | case DefaultTemplateArgumentChecking: | ||||
205 | case DeclaringSpecialMember: | ||||
206 | case DefiningSynthesizedFunction: | ||||
207 | case ExceptionSpecEvaluation: | ||||
208 | case ConstraintSubstitution: | ||||
209 | case RewritingOperatorAsSpaceship: | ||||
210 | return false; | ||||
211 | |||||
212 | // This function should never be called when Kind's value is Memoization. | ||||
213 | case Memoization: | ||||
214 | break; | ||||
215 | } | ||||
216 | |||||
217 | llvm_unreachable("Invalid SynthesisKind!")::llvm::llvm_unreachable_internal("Invalid SynthesisKind!", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 217); | ||||
218 | } | ||||
219 | |||||
220 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
221 | Sema &SemaRef, CodeSynthesisContext::SynthesisKind Kind, | ||||
222 | SourceLocation PointOfInstantiation, SourceRange InstantiationRange, | ||||
223 | Decl *Entity, NamedDecl *Template, ArrayRef<TemplateArgument> TemplateArgs, | ||||
224 | sema::TemplateDeductionInfo *DeductionInfo) | ||||
225 | : SemaRef(SemaRef) { | ||||
226 | // Don't allow further instantiation if a fatal error and an uncompilable | ||||
227 | // error have occurred. Any diagnostics we might have raised will not be | ||||
228 | // visible, and we do not need to construct a correct AST. | ||||
229 | if (SemaRef.Diags.hasFatalErrorOccurred() && | ||||
230 | SemaRef.Diags.hasUncompilableErrorOccurred()) { | ||||
231 | Invalid = true; | ||||
232 | return; | ||||
233 | } | ||||
234 | Invalid = CheckInstantiationDepth(PointOfInstantiation, InstantiationRange); | ||||
235 | if (!Invalid
| ||||
236 | CodeSynthesisContext Inst; | ||||
237 | Inst.Kind = Kind; | ||||
238 | Inst.PointOfInstantiation = PointOfInstantiation; | ||||
239 | Inst.Entity = Entity; | ||||
240 | Inst.Template = Template; | ||||
241 | Inst.TemplateArgs = TemplateArgs.data(); | ||||
242 | Inst.NumTemplateArgs = TemplateArgs.size(); | ||||
243 | Inst.DeductionInfo = DeductionInfo; | ||||
244 | Inst.InstantiationRange = InstantiationRange; | ||||
245 | SemaRef.pushCodeSynthesisContext(Inst); | ||||
246 | |||||
247 | AlreadyInstantiating = | ||||
248 | !SemaRef.InstantiatingSpecializations | ||||
249 | .insert(std::make_pair(Inst.Entity->getCanonicalDecl(), Inst.Kind)) | ||||
250 | .second; | ||||
251 | atTemplateBegin(SemaRef.TemplateInstCallbacks, SemaRef, Inst); | ||||
252 | } | ||||
253 | } | ||||
254 | |||||
255 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
256 | Sema &SemaRef, SourceLocation PointOfInstantiation, Decl *Entity, | ||||
257 | SourceRange InstantiationRange) | ||||
258 | : InstantiatingTemplate(SemaRef, | ||||
259 | CodeSynthesisContext::TemplateInstantiation, | ||||
260 | PointOfInstantiation, InstantiationRange, Entity) {} | ||||
261 | |||||
262 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
263 | Sema &SemaRef, SourceLocation PointOfInstantiation, FunctionDecl *Entity, | ||||
264 | ExceptionSpecification, SourceRange InstantiationRange) | ||||
265 | : InstantiatingTemplate( | ||||
266 | SemaRef, CodeSynthesisContext::ExceptionSpecInstantiation, | ||||
267 | PointOfInstantiation, InstantiationRange, Entity) {} | ||||
268 | |||||
269 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
270 | Sema &SemaRef, SourceLocation PointOfInstantiation, TemplateParameter Param, | ||||
271 | TemplateDecl *Template, ArrayRef<TemplateArgument> TemplateArgs, | ||||
272 | SourceRange InstantiationRange) | ||||
273 | : InstantiatingTemplate( | ||||
274 | SemaRef, | ||||
275 | CodeSynthesisContext::DefaultTemplateArgumentInstantiation, | ||||
276 | PointOfInstantiation, InstantiationRange, getAsNamedDecl(Param), | ||||
277 | Template, TemplateArgs) {} | ||||
278 | |||||
279 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
280 | Sema &SemaRef, SourceLocation PointOfInstantiation, | ||||
281 | FunctionTemplateDecl *FunctionTemplate, | ||||
282 | ArrayRef<TemplateArgument> TemplateArgs, | ||||
283 | CodeSynthesisContext::SynthesisKind Kind, | ||||
284 | sema::TemplateDeductionInfo &DeductionInfo, SourceRange InstantiationRange) | ||||
285 | : InstantiatingTemplate(SemaRef, Kind, PointOfInstantiation, | ||||
286 | InstantiationRange, FunctionTemplate, nullptr, | ||||
287 | TemplateArgs, &DeductionInfo) { | ||||
288 | assert(((Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution || Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution ) ? static_cast<void> (0) : __assert_fail ("Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution || Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 290, __PRETTY_FUNCTION__)) | ||||
289 | Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution ||((Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution || Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution ) ? static_cast<void> (0) : __assert_fail ("Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution || Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 290, __PRETTY_FUNCTION__)) | ||||
290 | Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution)((Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution || Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution ) ? static_cast<void> (0) : __assert_fail ("Kind == CodeSynthesisContext::ExplicitTemplateArgumentSubstitution || Kind == CodeSynthesisContext::DeducedTemplateArgumentSubstitution" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 290, __PRETTY_FUNCTION__)); | ||||
291 | } | ||||
292 | |||||
293 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
294 | Sema &SemaRef, SourceLocation PointOfInstantiation, | ||||
295 | TemplateDecl *Template, | ||||
296 | ArrayRef<TemplateArgument> TemplateArgs, | ||||
297 | sema::TemplateDeductionInfo &DeductionInfo, SourceRange InstantiationRange) | ||||
298 | : InstantiatingTemplate( | ||||
299 | SemaRef, | ||||
300 | CodeSynthesisContext::DeducedTemplateArgumentSubstitution, | ||||
301 | PointOfInstantiation, InstantiationRange, Template, nullptr, | ||||
302 | TemplateArgs, &DeductionInfo) {} | ||||
303 | |||||
304 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
305 | Sema &SemaRef, SourceLocation PointOfInstantiation, | ||||
306 | ClassTemplatePartialSpecializationDecl *PartialSpec, | ||||
307 | ArrayRef<TemplateArgument> TemplateArgs, | ||||
308 | sema::TemplateDeductionInfo &DeductionInfo, SourceRange InstantiationRange) | ||||
309 | : InstantiatingTemplate( | ||||
310 | SemaRef, | ||||
311 | CodeSynthesisContext::DeducedTemplateArgumentSubstitution, | ||||
312 | PointOfInstantiation, InstantiationRange, PartialSpec, nullptr, | ||||
313 | TemplateArgs, &DeductionInfo) {} | ||||
314 | |||||
315 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
316 | Sema &SemaRef, SourceLocation PointOfInstantiation, | ||||
317 | VarTemplatePartialSpecializationDecl *PartialSpec, | ||||
318 | ArrayRef<TemplateArgument> TemplateArgs, | ||||
319 | sema::TemplateDeductionInfo &DeductionInfo, SourceRange InstantiationRange) | ||||
320 | : InstantiatingTemplate( | ||||
321 | SemaRef, | ||||
322 | CodeSynthesisContext::DeducedTemplateArgumentSubstitution, | ||||
323 | PointOfInstantiation, InstantiationRange, PartialSpec, nullptr, | ||||
324 | TemplateArgs, &DeductionInfo) {} | ||||
325 | |||||
326 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
327 | Sema &SemaRef, SourceLocation PointOfInstantiation, ParmVarDecl *Param, | ||||
328 | ArrayRef<TemplateArgument> TemplateArgs, SourceRange InstantiationRange) | ||||
329 | : InstantiatingTemplate( | ||||
330 | SemaRef, | ||||
331 | CodeSynthesisContext::DefaultFunctionArgumentInstantiation, | ||||
332 | PointOfInstantiation, InstantiationRange, Param, nullptr, | ||||
333 | TemplateArgs) {} | ||||
334 | |||||
335 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
336 | Sema &SemaRef, SourceLocation PointOfInstantiation, NamedDecl *Template, | ||||
337 | NonTypeTemplateParmDecl *Param, ArrayRef<TemplateArgument> TemplateArgs, | ||||
338 | SourceRange InstantiationRange) | ||||
339 | : InstantiatingTemplate( | ||||
340 | SemaRef, | ||||
341 | CodeSynthesisContext::PriorTemplateArgumentSubstitution, | ||||
342 | PointOfInstantiation, InstantiationRange, Param, Template, | ||||
343 | TemplateArgs) {} | ||||
344 | |||||
345 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
346 | Sema &SemaRef, SourceLocation PointOfInstantiation, NamedDecl *Template, | ||||
347 | TemplateTemplateParmDecl *Param, ArrayRef<TemplateArgument> TemplateArgs, | ||||
348 | SourceRange InstantiationRange) | ||||
349 | : InstantiatingTemplate( | ||||
350 | SemaRef, | ||||
351 | CodeSynthesisContext::PriorTemplateArgumentSubstitution, | ||||
352 | PointOfInstantiation, InstantiationRange, Param, Template, | ||||
353 | TemplateArgs) {} | ||||
354 | |||||
355 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
356 | Sema &SemaRef, SourceLocation PointOfInstantiation, TemplateDecl *Template, | ||||
357 | NamedDecl *Param, ArrayRef<TemplateArgument> TemplateArgs, | ||||
358 | SourceRange InstantiationRange) | ||||
359 | : InstantiatingTemplate( | ||||
360 | SemaRef, CodeSynthesisContext::DefaultTemplateArgumentChecking, | ||||
361 | PointOfInstantiation, InstantiationRange, Param, Template, | ||||
362 | TemplateArgs) {} | ||||
363 | |||||
364 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
365 | Sema &SemaRef, SourceLocation PointOfInstantiation, | ||||
366 | ConstraintsCheck, TemplateDecl *Template, | ||||
367 | ArrayRef<TemplateArgument> TemplateArgs, SourceRange InstantiationRange) | ||||
368 | : InstantiatingTemplate( | ||||
369 | SemaRef, CodeSynthesisContext::ConstraintsCheck, | ||||
370 | PointOfInstantiation, InstantiationRange, Template, nullptr, | ||||
371 | TemplateArgs) {} | ||||
372 | |||||
373 | Sema::InstantiatingTemplate::InstantiatingTemplate( | ||||
374 | Sema &SemaRef, SourceLocation PointOfInstantiation, | ||||
375 | ConstraintSubstitution, TemplateDecl *Template, | ||||
376 | sema::TemplateDeductionInfo &DeductionInfo, SourceRange InstantiationRange) | ||||
377 | : InstantiatingTemplate( | ||||
378 | SemaRef, CodeSynthesisContext::ConstraintSubstitution, | ||||
379 | PointOfInstantiation, InstantiationRange, Template, nullptr, | ||||
380 | {}, &DeductionInfo) {} | ||||
381 | |||||
382 | void Sema::pushCodeSynthesisContext(CodeSynthesisContext Ctx) { | ||||
383 | Ctx.SavedInNonInstantiationSFINAEContext = InNonInstantiationSFINAEContext; | ||||
384 | InNonInstantiationSFINAEContext = false; | ||||
385 | |||||
386 | CodeSynthesisContexts.push_back(Ctx); | ||||
387 | |||||
388 | if (!Ctx.isInstantiationRecord()) | ||||
389 | ++NonInstantiationEntries; | ||||
390 | |||||
391 | // Check to see if we're low on stack space. We can't do anything about this | ||||
392 | // from here, but we can at least warn the user. | ||||
393 | if (isStackNearlyExhausted()) | ||||
394 | warnStackExhausted(Ctx.PointOfInstantiation); | ||||
395 | } | ||||
396 | |||||
397 | void Sema::popCodeSynthesisContext() { | ||||
398 | auto &Active = CodeSynthesisContexts.back(); | ||||
399 | if (!Active.isInstantiationRecord()) { | ||||
400 | assert(NonInstantiationEntries > 0)((NonInstantiationEntries > 0) ? static_cast<void> ( 0) : __assert_fail ("NonInstantiationEntries > 0", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 400, __PRETTY_FUNCTION__)); | ||||
401 | --NonInstantiationEntries; | ||||
402 | } | ||||
403 | |||||
404 | InNonInstantiationSFINAEContext = Active.SavedInNonInstantiationSFINAEContext; | ||||
405 | |||||
406 | // Name lookup no longer looks in this template's defining module. | ||||
407 | assert(CodeSynthesisContexts.size() >=((CodeSynthesisContexts.size() >= CodeSynthesisContextLookupModules .size() && "forgot to remove a lookup module for a template instantiation" ) ? static_cast<void> (0) : __assert_fail ("CodeSynthesisContexts.size() >= CodeSynthesisContextLookupModules.size() && \"forgot to remove a lookup module for a template instantiation\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 409, __PRETTY_FUNCTION__)) | ||||
408 | CodeSynthesisContextLookupModules.size() &&((CodeSynthesisContexts.size() >= CodeSynthesisContextLookupModules .size() && "forgot to remove a lookup module for a template instantiation" ) ? static_cast<void> (0) : __assert_fail ("CodeSynthesisContexts.size() >= CodeSynthesisContextLookupModules.size() && \"forgot to remove a lookup module for a template instantiation\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 409, __PRETTY_FUNCTION__)) | ||||
409 | "forgot to remove a lookup module for a template instantiation")((CodeSynthesisContexts.size() >= CodeSynthesisContextLookupModules .size() && "forgot to remove a lookup module for a template instantiation" ) ? static_cast<void> (0) : __assert_fail ("CodeSynthesisContexts.size() >= CodeSynthesisContextLookupModules.size() && \"forgot to remove a lookup module for a template instantiation\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 409, __PRETTY_FUNCTION__)); | ||||
410 | if (CodeSynthesisContexts.size() == | ||||
411 | CodeSynthesisContextLookupModules.size()) { | ||||
412 | if (Module *M = CodeSynthesisContextLookupModules.back()) | ||||
413 | LookupModulesCache.erase(M); | ||||
414 | CodeSynthesisContextLookupModules.pop_back(); | ||||
415 | } | ||||
416 | |||||
417 | // If we've left the code synthesis context for the current context stack, | ||||
418 | // stop remembering that we've emitted that stack. | ||||
419 | if (CodeSynthesisContexts.size() == | ||||
420 | LastEmittedCodeSynthesisContextDepth) | ||||
421 | LastEmittedCodeSynthesisContextDepth = 0; | ||||
422 | |||||
423 | CodeSynthesisContexts.pop_back(); | ||||
424 | } | ||||
425 | |||||
426 | void Sema::InstantiatingTemplate::Clear() { | ||||
427 | if (!Invalid) { | ||||
428 | if (!AlreadyInstantiating) { | ||||
429 | auto &Active = SemaRef.CodeSynthesisContexts.back(); | ||||
430 | SemaRef.InstantiatingSpecializations.erase( | ||||
431 | std::make_pair(Active.Entity, Active.Kind)); | ||||
432 | } | ||||
433 | |||||
434 | atTemplateEnd(SemaRef.TemplateInstCallbacks, SemaRef, | ||||
435 | SemaRef.CodeSynthesisContexts.back()); | ||||
436 | |||||
437 | SemaRef.popCodeSynthesisContext(); | ||||
438 | Invalid = true; | ||||
439 | } | ||||
440 | } | ||||
441 | |||||
442 | bool Sema::InstantiatingTemplate::CheckInstantiationDepth( | ||||
443 | SourceLocation PointOfInstantiation, | ||||
444 | SourceRange InstantiationRange) { | ||||
445 | assert(SemaRef.NonInstantiationEntries <=((SemaRef.NonInstantiationEntries <= SemaRef.CodeSynthesisContexts .size()) ? static_cast<void> (0) : __assert_fail ("SemaRef.NonInstantiationEntries <= SemaRef.CodeSynthesisContexts.size()" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 446, __PRETTY_FUNCTION__)) | ||||
446 | SemaRef.CodeSynthesisContexts.size())((SemaRef.NonInstantiationEntries <= SemaRef.CodeSynthesisContexts .size()) ? static_cast<void> (0) : __assert_fail ("SemaRef.NonInstantiationEntries <= SemaRef.CodeSynthesisContexts.size()" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 446, __PRETTY_FUNCTION__)); | ||||
447 | if ((SemaRef.CodeSynthesisContexts.size() - | ||||
448 | SemaRef.NonInstantiationEntries) | ||||
449 | <= SemaRef.getLangOpts().InstantiationDepth) | ||||
450 | return false; | ||||
451 | |||||
452 | SemaRef.Diag(PointOfInstantiation, | ||||
453 | diag::err_template_recursion_depth_exceeded) | ||||
454 | << SemaRef.getLangOpts().InstantiationDepth | ||||
455 | << InstantiationRange; | ||||
456 | SemaRef.Diag(PointOfInstantiation, diag::note_template_recursion_depth) | ||||
457 | << SemaRef.getLangOpts().InstantiationDepth; | ||||
458 | return true; | ||||
459 | } | ||||
460 | |||||
461 | /// Prints the current instantiation stack through a series of | ||||
462 | /// notes. | ||||
463 | void Sema::PrintInstantiationStack() { | ||||
464 | // Determine which template instantiations to skip, if any. | ||||
465 | unsigned SkipStart = CodeSynthesisContexts.size(), SkipEnd = SkipStart; | ||||
466 | unsigned Limit = Diags.getTemplateBacktraceLimit(); | ||||
467 | if (Limit && Limit < CodeSynthesisContexts.size()) { | ||||
468 | SkipStart = Limit / 2 + Limit % 2; | ||||
469 | SkipEnd = CodeSynthesisContexts.size() - Limit / 2; | ||||
470 | } | ||||
471 | |||||
472 | // FIXME: In all of these cases, we need to show the template arguments | ||||
473 | unsigned InstantiationIdx = 0; | ||||
474 | for (SmallVectorImpl<CodeSynthesisContext>::reverse_iterator | ||||
475 | Active = CodeSynthesisContexts.rbegin(), | ||||
476 | ActiveEnd = CodeSynthesisContexts.rend(); | ||||
477 | Active != ActiveEnd; | ||||
478 | ++Active, ++InstantiationIdx) { | ||||
479 | // Skip this instantiation? | ||||
480 | if (InstantiationIdx >= SkipStart && InstantiationIdx < SkipEnd) { | ||||
481 | if (InstantiationIdx == SkipStart) { | ||||
482 | // Note that we're skipping instantiations. | ||||
483 | Diags.Report(Active->PointOfInstantiation, | ||||
484 | diag::note_instantiation_contexts_suppressed) | ||||
485 | << unsigned(CodeSynthesisContexts.size() - Limit); | ||||
486 | } | ||||
487 | continue; | ||||
488 | } | ||||
489 | |||||
490 | switch (Active->Kind) { | ||||
491 | case CodeSynthesisContext::TemplateInstantiation: { | ||||
492 | Decl *D = Active->Entity; | ||||
493 | if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(D)) { | ||||
494 | unsigned DiagID = diag::note_template_member_class_here; | ||||
495 | if (isa<ClassTemplateSpecializationDecl>(Record)) | ||||
496 | DiagID = diag::note_template_class_instantiation_here; | ||||
497 | Diags.Report(Active->PointOfInstantiation, DiagID) | ||||
498 | << Record << Active->InstantiationRange; | ||||
499 | } else if (FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) { | ||||
500 | unsigned DiagID; | ||||
501 | if (Function->getPrimaryTemplate()) | ||||
502 | DiagID = diag::note_function_template_spec_here; | ||||
503 | else | ||||
504 | DiagID = diag::note_template_member_function_here; | ||||
505 | Diags.Report(Active->PointOfInstantiation, DiagID) | ||||
506 | << Function | ||||
507 | << Active->InstantiationRange; | ||||
508 | } else if (VarDecl *VD = dyn_cast<VarDecl>(D)) { | ||||
509 | Diags.Report(Active->PointOfInstantiation, | ||||
510 | VD->isStaticDataMember()? | ||||
511 | diag::note_template_static_data_member_def_here | ||||
512 | : diag::note_template_variable_def_here) | ||||
513 | << VD | ||||
514 | << Active->InstantiationRange; | ||||
515 | } else if (EnumDecl *ED = dyn_cast<EnumDecl>(D)) { | ||||
516 | Diags.Report(Active->PointOfInstantiation, | ||||
517 | diag::note_template_enum_def_here) | ||||
518 | << ED | ||||
519 | << Active->InstantiationRange; | ||||
520 | } else if (FieldDecl *FD = dyn_cast<FieldDecl>(D)) { | ||||
521 | Diags.Report(Active->PointOfInstantiation, | ||||
522 | diag::note_template_nsdmi_here) | ||||
523 | << FD << Active->InstantiationRange; | ||||
524 | } else { | ||||
525 | Diags.Report(Active->PointOfInstantiation, | ||||
526 | diag::note_template_type_alias_instantiation_here) | ||||
527 | << cast<TypeAliasTemplateDecl>(D) | ||||
528 | << Active->InstantiationRange; | ||||
529 | } | ||||
530 | break; | ||||
531 | } | ||||
532 | |||||
533 | case CodeSynthesisContext::DefaultTemplateArgumentInstantiation: { | ||||
534 | TemplateDecl *Template = cast<TemplateDecl>(Active->Template); | ||||
535 | SmallVector<char, 128> TemplateArgsStr; | ||||
536 | llvm::raw_svector_ostream OS(TemplateArgsStr); | ||||
537 | Template->printName(OS); | ||||
538 | printTemplateArgumentList(OS, Active->template_arguments(), | ||||
539 | getPrintingPolicy()); | ||||
540 | Diags.Report(Active->PointOfInstantiation, | ||||
541 | diag::note_default_arg_instantiation_here) | ||||
542 | << OS.str() | ||||
543 | << Active->InstantiationRange; | ||||
544 | break; | ||||
545 | } | ||||
546 | |||||
547 | case CodeSynthesisContext::ExplicitTemplateArgumentSubstitution: { | ||||
548 | FunctionTemplateDecl *FnTmpl = cast<FunctionTemplateDecl>(Active->Entity); | ||||
549 | Diags.Report(Active->PointOfInstantiation, | ||||
550 | diag::note_explicit_template_arg_substitution_here) | ||||
551 | << FnTmpl | ||||
552 | << getTemplateArgumentBindingsText(FnTmpl->getTemplateParameters(), | ||||
553 | Active->TemplateArgs, | ||||
554 | Active->NumTemplateArgs) | ||||
555 | << Active->InstantiationRange; | ||||
556 | break; | ||||
557 | } | ||||
558 | |||||
559 | case CodeSynthesisContext::DeducedTemplateArgumentSubstitution: { | ||||
560 | if (FunctionTemplateDecl *FnTmpl = | ||||
561 | dyn_cast<FunctionTemplateDecl>(Active->Entity)) { | ||||
562 | Diags.Report(Active->PointOfInstantiation, | ||||
563 | diag::note_function_template_deduction_instantiation_here) | ||||
564 | << FnTmpl | ||||
565 | << getTemplateArgumentBindingsText(FnTmpl->getTemplateParameters(), | ||||
566 | Active->TemplateArgs, | ||||
567 | Active->NumTemplateArgs) | ||||
568 | << Active->InstantiationRange; | ||||
569 | } else { | ||||
570 | bool IsVar = isa<VarTemplateDecl>(Active->Entity) || | ||||
571 | isa<VarTemplateSpecializationDecl>(Active->Entity); | ||||
572 | bool IsTemplate = false; | ||||
573 | TemplateParameterList *Params; | ||||
574 | if (auto *D = dyn_cast<TemplateDecl>(Active->Entity)) { | ||||
575 | IsTemplate = true; | ||||
576 | Params = D->getTemplateParameters(); | ||||
577 | } else if (auto *D = dyn_cast<ClassTemplatePartialSpecializationDecl>( | ||||
578 | Active->Entity)) { | ||||
579 | Params = D->getTemplateParameters(); | ||||
580 | } else if (auto *D = dyn_cast<VarTemplatePartialSpecializationDecl>( | ||||
581 | Active->Entity)) { | ||||
582 | Params = D->getTemplateParameters(); | ||||
583 | } else { | ||||
584 | llvm_unreachable("unexpected template kind")::llvm::llvm_unreachable_internal("unexpected template kind", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 584); | ||||
585 | } | ||||
586 | |||||
587 | Diags.Report(Active->PointOfInstantiation, | ||||
588 | diag::note_deduced_template_arg_substitution_here) | ||||
589 | << IsVar << IsTemplate << cast<NamedDecl>(Active->Entity) | ||||
590 | << getTemplateArgumentBindingsText(Params, Active->TemplateArgs, | ||||
591 | Active->NumTemplateArgs) | ||||
592 | << Active->InstantiationRange; | ||||
593 | } | ||||
594 | break; | ||||
595 | } | ||||
596 | |||||
597 | case CodeSynthesisContext::DefaultFunctionArgumentInstantiation: { | ||||
598 | ParmVarDecl *Param = cast<ParmVarDecl>(Active->Entity); | ||||
599 | FunctionDecl *FD = cast<FunctionDecl>(Param->getDeclContext()); | ||||
600 | |||||
601 | SmallVector<char, 128> TemplateArgsStr; | ||||
602 | llvm::raw_svector_ostream OS(TemplateArgsStr); | ||||
603 | FD->printName(OS); | ||||
604 | printTemplateArgumentList(OS, Active->template_arguments(), | ||||
605 | getPrintingPolicy()); | ||||
606 | Diags.Report(Active->PointOfInstantiation, | ||||
607 | diag::note_default_function_arg_instantiation_here) | ||||
608 | << OS.str() | ||||
609 | << Active->InstantiationRange; | ||||
610 | break; | ||||
611 | } | ||||
612 | |||||
613 | case CodeSynthesisContext::PriorTemplateArgumentSubstitution: { | ||||
614 | NamedDecl *Parm = cast<NamedDecl>(Active->Entity); | ||||
615 | std::string Name; | ||||
616 | if (!Parm->getName().empty()) | ||||
617 | Name = std::string(" '") + Parm->getName().str() + "'"; | ||||
618 | |||||
619 | TemplateParameterList *TemplateParams = nullptr; | ||||
620 | if (TemplateDecl *Template = dyn_cast<TemplateDecl>(Active->Template)) | ||||
621 | TemplateParams = Template->getTemplateParameters(); | ||||
622 | else | ||||
623 | TemplateParams = | ||||
624 | cast<ClassTemplatePartialSpecializationDecl>(Active->Template) | ||||
625 | ->getTemplateParameters(); | ||||
626 | Diags.Report(Active->PointOfInstantiation, | ||||
627 | diag::note_prior_template_arg_substitution) | ||||
628 | << isa<TemplateTemplateParmDecl>(Parm) | ||||
629 | << Name | ||||
630 | << getTemplateArgumentBindingsText(TemplateParams, | ||||
631 | Active->TemplateArgs, | ||||
632 | Active->NumTemplateArgs) | ||||
633 | << Active->InstantiationRange; | ||||
634 | break; | ||||
635 | } | ||||
636 | |||||
637 | case CodeSynthesisContext::DefaultTemplateArgumentChecking: { | ||||
638 | TemplateParameterList *TemplateParams = nullptr; | ||||
639 | if (TemplateDecl *Template = dyn_cast<TemplateDecl>(Active->Template)) | ||||
640 | TemplateParams = Template->getTemplateParameters(); | ||||
641 | else | ||||
642 | TemplateParams = | ||||
643 | cast<ClassTemplatePartialSpecializationDecl>(Active->Template) | ||||
644 | ->getTemplateParameters(); | ||||
645 | |||||
646 | Diags.Report(Active->PointOfInstantiation, | ||||
647 | diag::note_template_default_arg_checking) | ||||
648 | << getTemplateArgumentBindingsText(TemplateParams, | ||||
649 | Active->TemplateArgs, | ||||
650 | Active->NumTemplateArgs) | ||||
651 | << Active->InstantiationRange; | ||||
652 | break; | ||||
653 | } | ||||
654 | |||||
655 | case CodeSynthesisContext::ExceptionSpecEvaluation: | ||||
656 | Diags.Report(Active->PointOfInstantiation, | ||||
657 | diag::note_evaluating_exception_spec_here) | ||||
658 | << cast<FunctionDecl>(Active->Entity); | ||||
659 | break; | ||||
660 | |||||
661 | case CodeSynthesisContext::ExceptionSpecInstantiation: | ||||
662 | Diags.Report(Active->PointOfInstantiation, | ||||
663 | diag::note_template_exception_spec_instantiation_here) | ||||
664 | << cast<FunctionDecl>(Active->Entity) | ||||
665 | << Active->InstantiationRange; | ||||
666 | break; | ||||
667 | |||||
668 | case CodeSynthesisContext::DeclaringSpecialMember: | ||||
669 | Diags.Report(Active->PointOfInstantiation, | ||||
670 | diag::note_in_declaration_of_implicit_special_member) | ||||
671 | << cast<CXXRecordDecl>(Active->Entity) << Active->SpecialMember; | ||||
672 | break; | ||||
673 | |||||
674 | case CodeSynthesisContext::DefiningSynthesizedFunction: { | ||||
675 | // FIXME: For synthesized members other than special members, produce a note. | ||||
676 | auto *MD = dyn_cast<CXXMethodDecl>(Active->Entity); | ||||
677 | auto CSM = MD ? getSpecialMember(MD) : CXXInvalid; | ||||
678 | if (CSM != CXXInvalid) { | ||||
679 | Diags.Report(Active->PointOfInstantiation, | ||||
680 | diag::note_member_synthesized_at) | ||||
681 | << CSM << Context.getTagDeclType(MD->getParent()); | ||||
682 | } | ||||
683 | break; | ||||
684 | } | ||||
685 | |||||
686 | case CodeSynthesisContext::RewritingOperatorAsSpaceship: | ||||
687 | Diags.Report(Active->Entity->getLocation(), | ||||
688 | diag::note_rewriting_operator_as_spaceship); | ||||
689 | break; | ||||
690 | |||||
691 | case CodeSynthesisContext::Memoization: | ||||
692 | break; | ||||
693 | |||||
694 | case CodeSynthesisContext::ConstraintsCheck: | ||||
695 | if (auto *CD = dyn_cast<ConceptDecl>(Active->Entity)) { | ||||
696 | SmallVector<char, 128> TemplateArgsStr; | ||||
697 | llvm::raw_svector_ostream OS(TemplateArgsStr); | ||||
698 | CD->printName(OS); | ||||
699 | printTemplateArgumentList(OS, Active->template_arguments(), | ||||
700 | getPrintingPolicy()); | ||||
701 | Diags.Report(Active->PointOfInstantiation, | ||||
702 | diag::note_concept_specialization_here) | ||||
703 | << OS.str() | ||||
704 | << Active->InstantiationRange; | ||||
705 | break; | ||||
706 | } | ||||
707 | // TODO: Concepts - implement this for constrained templates and partial | ||||
708 | // specializations. | ||||
709 | llvm_unreachable("only concept constraints are supported right now")::llvm::llvm_unreachable_internal("only concept constraints are supported right now" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 709); | ||||
710 | break; | ||||
711 | |||||
712 | case CodeSynthesisContext::ConstraintSubstitution: | ||||
713 | Diags.Report(Active->PointOfInstantiation, | ||||
714 | diag::note_constraint_substitution_here) | ||||
715 | << Active->InstantiationRange; | ||||
716 | break; | ||||
717 | } | ||||
718 | } | ||||
719 | } | ||||
720 | |||||
721 | Optional<TemplateDeductionInfo *> Sema::isSFINAEContext() const { | ||||
722 | if (InNonInstantiationSFINAEContext) | ||||
723 | return Optional<TemplateDeductionInfo *>(nullptr); | ||||
724 | |||||
725 | for (SmallVectorImpl<CodeSynthesisContext>::const_reverse_iterator | ||||
726 | Active = CodeSynthesisContexts.rbegin(), | ||||
727 | ActiveEnd = CodeSynthesisContexts.rend(); | ||||
728 | Active != ActiveEnd; | ||||
729 | ++Active) | ||||
730 | { | ||||
731 | switch (Active->Kind) { | ||||
732 | case CodeSynthesisContext::TemplateInstantiation: | ||||
733 | // An instantiation of an alias template may or may not be a SFINAE | ||||
734 | // context, depending on what else is on the stack. | ||||
735 | if (isa<TypeAliasTemplateDecl>(Active->Entity)) | ||||
736 | break; | ||||
737 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
738 | case CodeSynthesisContext::DefaultFunctionArgumentInstantiation: | ||||
739 | case CodeSynthesisContext::ExceptionSpecInstantiation: | ||||
740 | case CodeSynthesisContext::ConstraintsCheck: | ||||
741 | // This is a template instantiation, so there is no SFINAE. | ||||
742 | return None; | ||||
743 | |||||
744 | case CodeSynthesisContext::DefaultTemplateArgumentInstantiation: | ||||
745 | case CodeSynthesisContext::PriorTemplateArgumentSubstitution: | ||||
746 | case CodeSynthesisContext::DefaultTemplateArgumentChecking: | ||||
747 | // A default template argument instantiation and substitution into | ||||
748 | // template parameters with arguments for prior parameters may or may | ||||
749 | // not be a SFINAE context; look further up the stack. | ||||
750 | break; | ||||
751 | |||||
752 | case CodeSynthesisContext::ExplicitTemplateArgumentSubstitution: | ||||
753 | case CodeSynthesisContext::DeducedTemplateArgumentSubstitution: | ||||
754 | case CodeSynthesisContext::ConstraintSubstitution: | ||||
755 | // We're either substituting explicitly-specified template arguments | ||||
756 | // or deduced template arguments or a constraint expression, so SFINAE | ||||
757 | // applies. | ||||
758 | assert(Active->DeductionInfo && "Missing deduction info pointer")((Active->DeductionInfo && "Missing deduction info pointer" ) ? static_cast<void> (0) : __assert_fail ("Active->DeductionInfo && \"Missing deduction info pointer\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 758, __PRETTY_FUNCTION__)); | ||||
759 | return Active->DeductionInfo; | ||||
760 | |||||
761 | case CodeSynthesisContext::DeclaringSpecialMember: | ||||
762 | case CodeSynthesisContext::DefiningSynthesizedFunction: | ||||
763 | case CodeSynthesisContext::RewritingOperatorAsSpaceship: | ||||
764 | // This happens in a context unrelated to template instantiation, so | ||||
765 | // there is no SFINAE. | ||||
766 | return None; | ||||
767 | |||||
768 | case CodeSynthesisContext::ExceptionSpecEvaluation: | ||||
769 | // FIXME: This should not be treated as a SFINAE context, because | ||||
770 | // we will cache an incorrect exception specification. However, clang | ||||
771 | // bootstrap relies this! See PR31692. | ||||
772 | break; | ||||
773 | |||||
774 | case CodeSynthesisContext::Memoization: | ||||
775 | break; | ||||
776 | } | ||||
777 | |||||
778 | // The inner context was transparent for SFINAE. If it occurred within a | ||||
779 | // non-instantiation SFINAE context, then SFINAE applies. | ||||
780 | if (Active->SavedInNonInstantiationSFINAEContext) | ||||
781 | return Optional<TemplateDeductionInfo *>(nullptr); | ||||
782 | } | ||||
783 | |||||
784 | return None; | ||||
785 | } | ||||
786 | |||||
787 | //===----------------------------------------------------------------------===/ | ||||
788 | // Template Instantiation for Types | ||||
789 | //===----------------------------------------------------------------------===/ | ||||
790 | namespace { | ||||
791 | class TemplateInstantiator : public TreeTransform<TemplateInstantiator> { | ||||
792 | const MultiLevelTemplateArgumentList &TemplateArgs; | ||||
793 | SourceLocation Loc; | ||||
794 | DeclarationName Entity; | ||||
795 | |||||
796 | public: | ||||
797 | typedef TreeTransform<TemplateInstantiator> inherited; | ||||
798 | |||||
799 | TemplateInstantiator(Sema &SemaRef, | ||||
800 | const MultiLevelTemplateArgumentList &TemplateArgs, | ||||
801 | SourceLocation Loc, | ||||
802 | DeclarationName Entity) | ||||
803 | : inherited(SemaRef), TemplateArgs(TemplateArgs), Loc(Loc), | ||||
804 | Entity(Entity) { } | ||||
805 | |||||
806 | /// Determine whether the given type \p T has already been | ||||
807 | /// transformed. | ||||
808 | /// | ||||
809 | /// For the purposes of template instantiation, a type has already been | ||||
810 | /// transformed if it is NULL or if it is not dependent. | ||||
811 | bool AlreadyTransformed(QualType T); | ||||
812 | |||||
813 | /// Returns the location of the entity being instantiated, if known. | ||||
814 | SourceLocation getBaseLocation() { return Loc; } | ||||
815 | |||||
816 | /// Returns the name of the entity being instantiated, if any. | ||||
817 | DeclarationName getBaseEntity() { return Entity; } | ||||
818 | |||||
819 | /// Sets the "base" location and entity when that | ||||
820 | /// information is known based on another transformation. | ||||
821 | void setBase(SourceLocation Loc, DeclarationName Entity) { | ||||
822 | this->Loc = Loc; | ||||
823 | this->Entity = Entity; | ||||
824 | } | ||||
825 | |||||
826 | bool TryExpandParameterPacks(SourceLocation EllipsisLoc, | ||||
827 | SourceRange PatternRange, | ||||
828 | ArrayRef<UnexpandedParameterPack> Unexpanded, | ||||
829 | bool &ShouldExpand, bool &RetainExpansion, | ||||
830 | Optional<unsigned> &NumExpansions) { | ||||
831 | return getSema().CheckParameterPacksForExpansion(EllipsisLoc, | ||||
832 | PatternRange, Unexpanded, | ||||
833 | TemplateArgs, | ||||
834 | ShouldExpand, | ||||
835 | RetainExpansion, | ||||
836 | NumExpansions); | ||||
837 | } | ||||
838 | |||||
839 | void ExpandingFunctionParameterPack(ParmVarDecl *Pack) { | ||||
840 | SemaRef.CurrentInstantiationScope->MakeInstantiatedLocalArgPack(Pack); | ||||
841 | } | ||||
842 | |||||
843 | TemplateArgument ForgetPartiallySubstitutedPack() { | ||||
844 | TemplateArgument Result; | ||||
845 | if (NamedDecl *PartialPack | ||||
846 | = SemaRef.CurrentInstantiationScope->getPartiallySubstitutedPack()){ | ||||
847 | MultiLevelTemplateArgumentList &TemplateArgs | ||||
848 | = const_cast<MultiLevelTemplateArgumentList &>(this->TemplateArgs); | ||||
849 | unsigned Depth, Index; | ||||
850 | std::tie(Depth, Index) = getDepthAndIndex(PartialPack); | ||||
851 | if (TemplateArgs.hasTemplateArgument(Depth, Index)) { | ||||
852 | Result = TemplateArgs(Depth, Index); | ||||
853 | TemplateArgs.setArgument(Depth, Index, TemplateArgument()); | ||||
854 | } | ||||
855 | } | ||||
856 | |||||
857 | return Result; | ||||
858 | } | ||||
859 | |||||
860 | void RememberPartiallySubstitutedPack(TemplateArgument Arg) { | ||||
861 | if (Arg.isNull()) | ||||
862 | return; | ||||
863 | |||||
864 | if (NamedDecl *PartialPack | ||||
865 | = SemaRef.CurrentInstantiationScope->getPartiallySubstitutedPack()){ | ||||
866 | MultiLevelTemplateArgumentList &TemplateArgs | ||||
867 | = const_cast<MultiLevelTemplateArgumentList &>(this->TemplateArgs); | ||||
868 | unsigned Depth, Index; | ||||
869 | std::tie(Depth, Index) = getDepthAndIndex(PartialPack); | ||||
870 | TemplateArgs.setArgument(Depth, Index, Arg); | ||||
871 | } | ||||
872 | } | ||||
873 | |||||
874 | /// Transform the given declaration by instantiating a reference to | ||||
875 | /// this declaration. | ||||
876 | Decl *TransformDecl(SourceLocation Loc, Decl *D); | ||||
877 | |||||
878 | void transformAttrs(Decl *Old, Decl *New) { | ||||
879 | SemaRef.InstantiateAttrs(TemplateArgs, Old, New); | ||||
880 | } | ||||
881 | |||||
882 | void transformedLocalDecl(Decl *Old, ArrayRef<Decl *> NewDecls) { | ||||
883 | if (Old->isParameterPack()) { | ||||
884 | SemaRef.CurrentInstantiationScope->MakeInstantiatedLocalArgPack(Old); | ||||
885 | for (auto *New : NewDecls) | ||||
886 | SemaRef.CurrentInstantiationScope->InstantiatedLocalPackArg( | ||||
887 | Old, cast<VarDecl>(New)); | ||||
888 | return; | ||||
889 | } | ||||
890 | |||||
891 | assert(NewDecls.size() == 1 &&((NewDecls.size() == 1 && "should only have multiple expansions for a pack" ) ? static_cast<void> (0) : __assert_fail ("NewDecls.size() == 1 && \"should only have multiple expansions for a pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 892, __PRETTY_FUNCTION__)) | ||||
892 | "should only have multiple expansions for a pack")((NewDecls.size() == 1 && "should only have multiple expansions for a pack" ) ? static_cast<void> (0) : __assert_fail ("NewDecls.size() == 1 && \"should only have multiple expansions for a pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 892, __PRETTY_FUNCTION__)); | ||||
893 | Decl *New = NewDecls.front(); | ||||
894 | |||||
895 | // If we've instantiated the call operator of a lambda or the call | ||||
896 | // operator template of a generic lambda, update the "instantiation of" | ||||
897 | // information. | ||||
898 | auto *NewMD = dyn_cast<CXXMethodDecl>(New); | ||||
899 | if (NewMD && isLambdaCallOperator(NewMD)) { | ||||
900 | auto *OldMD = dyn_cast<CXXMethodDecl>(Old); | ||||
901 | if (auto *NewTD = NewMD->getDescribedFunctionTemplate()) | ||||
902 | NewTD->setInstantiatedFromMemberTemplate( | ||||
903 | OldMD->getDescribedFunctionTemplate()); | ||||
904 | else | ||||
905 | NewMD->setInstantiationOfMemberFunction(OldMD, | ||||
906 | TSK_ImplicitInstantiation); | ||||
907 | } | ||||
908 | |||||
909 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(Old, New); | ||||
910 | |||||
911 | // We recreated a local declaration, but not by instantiating it. There | ||||
912 | // may be pending dependent diagnostics to produce. | ||||
913 | if (auto *DC = dyn_cast<DeclContext>(Old)) | ||||
914 | SemaRef.PerformDependentDiagnostics(DC, TemplateArgs); | ||||
915 | } | ||||
916 | |||||
917 | /// Transform the definition of the given declaration by | ||||
918 | /// instantiating it. | ||||
919 | Decl *TransformDefinition(SourceLocation Loc, Decl *D); | ||||
920 | |||||
921 | /// Transform the first qualifier within a scope by instantiating the | ||||
922 | /// declaration. | ||||
923 | NamedDecl *TransformFirstQualifierInScope(NamedDecl *D, SourceLocation Loc); | ||||
924 | |||||
925 | /// Rebuild the exception declaration and register the declaration | ||||
926 | /// as an instantiated local. | ||||
927 | VarDecl *RebuildExceptionDecl(VarDecl *ExceptionDecl, | ||||
928 | TypeSourceInfo *Declarator, | ||||
929 | SourceLocation StartLoc, | ||||
930 | SourceLocation NameLoc, | ||||
931 | IdentifierInfo *Name); | ||||
932 | |||||
933 | /// Rebuild the Objective-C exception declaration and register the | ||||
934 | /// declaration as an instantiated local. | ||||
935 | VarDecl *RebuildObjCExceptionDecl(VarDecl *ExceptionDecl, | ||||
936 | TypeSourceInfo *TSInfo, QualType T); | ||||
937 | |||||
938 | /// Check for tag mismatches when instantiating an | ||||
939 | /// elaborated type. | ||||
940 | QualType RebuildElaboratedType(SourceLocation KeywordLoc, | ||||
941 | ElaboratedTypeKeyword Keyword, | ||||
942 | NestedNameSpecifierLoc QualifierLoc, | ||||
943 | QualType T); | ||||
944 | |||||
945 | TemplateName | ||||
946 | TransformTemplateName(CXXScopeSpec &SS, TemplateName Name, | ||||
947 | SourceLocation NameLoc, | ||||
948 | QualType ObjectType = QualType(), | ||||
949 | NamedDecl *FirstQualifierInScope = nullptr, | ||||
950 | bool AllowInjectedClassName = false); | ||||
951 | |||||
952 | const LoopHintAttr *TransformLoopHintAttr(const LoopHintAttr *LH); | ||||
953 | |||||
954 | ExprResult TransformPredefinedExpr(PredefinedExpr *E); | ||||
955 | ExprResult TransformDeclRefExpr(DeclRefExpr *E); | ||||
956 | ExprResult TransformCXXDefaultArgExpr(CXXDefaultArgExpr *E); | ||||
957 | |||||
958 | ExprResult TransformTemplateParmRefExpr(DeclRefExpr *E, | ||||
959 | NonTypeTemplateParmDecl *D); | ||||
960 | ExprResult TransformSubstNonTypeTemplateParmPackExpr( | ||||
961 | SubstNonTypeTemplateParmPackExpr *E); | ||||
962 | |||||
963 | /// Rebuild a DeclRefExpr for a VarDecl reference. | ||||
964 | ExprResult RebuildVarDeclRefExpr(VarDecl *PD, SourceLocation Loc); | ||||
965 | |||||
966 | /// Transform a reference to a function or init-capture parameter pack. | ||||
967 | ExprResult TransformFunctionParmPackRefExpr(DeclRefExpr *E, VarDecl *PD); | ||||
968 | |||||
969 | /// Transform a FunctionParmPackExpr which was built when we couldn't | ||||
970 | /// expand a function parameter pack reference which refers to an expanded | ||||
971 | /// pack. | ||||
972 | ExprResult TransformFunctionParmPackExpr(FunctionParmPackExpr *E); | ||||
973 | |||||
974 | QualType TransformFunctionProtoType(TypeLocBuilder &TLB, | ||||
975 | FunctionProtoTypeLoc TL) { | ||||
976 | // Call the base version; it will forward to our overridden version below. | ||||
977 | return inherited::TransformFunctionProtoType(TLB, TL); | ||||
978 | } | ||||
979 | |||||
980 | template<typename Fn> | ||||
981 | QualType TransformFunctionProtoType(TypeLocBuilder &TLB, | ||||
982 | FunctionProtoTypeLoc TL, | ||||
983 | CXXRecordDecl *ThisContext, | ||||
984 | Qualifiers ThisTypeQuals, | ||||
985 | Fn TransformExceptionSpec); | ||||
986 | |||||
987 | ParmVarDecl *TransformFunctionTypeParam(ParmVarDecl *OldParm, | ||||
988 | int indexAdjustment, | ||||
989 | Optional<unsigned> NumExpansions, | ||||
990 | bool ExpectParameterPack); | ||||
991 | |||||
992 | /// Transforms a template type parameter type by performing | ||||
993 | /// substitution of the corresponding template type argument. | ||||
994 | QualType TransformTemplateTypeParmType(TypeLocBuilder &TLB, | ||||
995 | TemplateTypeParmTypeLoc TL); | ||||
996 | |||||
997 | /// Transforms an already-substituted template type parameter pack | ||||
998 | /// into either itself (if we aren't substituting into its pack expansion) | ||||
999 | /// or the appropriate substituted argument. | ||||
1000 | QualType TransformSubstTemplateTypeParmPackType(TypeLocBuilder &TLB, | ||||
1001 | SubstTemplateTypeParmPackTypeLoc TL); | ||||
1002 | |||||
1003 | ExprResult TransformLambdaExpr(LambdaExpr *E) { | ||||
1004 | LocalInstantiationScope Scope(SemaRef, /*CombineWithOuterScope=*/true); | ||||
1005 | return TreeTransform<TemplateInstantiator>::TransformLambdaExpr(E); | ||||
1006 | } | ||||
1007 | |||||
1008 | TemplateParameterList *TransformTemplateParameterList( | ||||
1009 | TemplateParameterList *OrigTPL) { | ||||
1010 | if (!OrigTPL || !OrigTPL->size()) return OrigTPL; | ||||
1011 | |||||
1012 | DeclContext *Owner = OrigTPL->getParam(0)->getDeclContext(); | ||||
1013 | TemplateDeclInstantiator DeclInstantiator(getSema(), | ||||
1014 | /* DeclContext *Owner */ Owner, TemplateArgs); | ||||
1015 | return DeclInstantiator.SubstTemplateParams(OrigTPL); | ||||
1016 | } | ||||
1017 | private: | ||||
1018 | ExprResult transformNonTypeTemplateParmRef(NonTypeTemplateParmDecl *parm, | ||||
1019 | SourceLocation loc, | ||||
1020 | TemplateArgument arg); | ||||
1021 | }; | ||||
1022 | } | ||||
1023 | |||||
1024 | bool TemplateInstantiator::AlreadyTransformed(QualType T) { | ||||
1025 | if (T.isNull()) | ||||
1026 | return true; | ||||
1027 | |||||
1028 | if (T->isInstantiationDependentType() || T->isVariablyModifiedType()) | ||||
1029 | return false; | ||||
1030 | |||||
1031 | getSema().MarkDeclarationsReferencedInType(Loc, T); | ||||
1032 | return true; | ||||
1033 | } | ||||
1034 | |||||
1035 | static TemplateArgument | ||||
1036 | getPackSubstitutedTemplateArgument(Sema &S, TemplateArgument Arg) { | ||||
1037 | assert(S.ArgumentPackSubstitutionIndex >= 0)((S.ArgumentPackSubstitutionIndex >= 0) ? static_cast<void > (0) : __assert_fail ("S.ArgumentPackSubstitutionIndex >= 0" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1037, __PRETTY_FUNCTION__)); | ||||
1038 | assert(S.ArgumentPackSubstitutionIndex < (int)Arg.pack_size())((S.ArgumentPackSubstitutionIndex < (int)Arg.pack_size()) ? static_cast<void> (0) : __assert_fail ("S.ArgumentPackSubstitutionIndex < (int)Arg.pack_size()" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1038, __PRETTY_FUNCTION__)); | ||||
1039 | Arg = Arg.pack_begin()[S.ArgumentPackSubstitutionIndex]; | ||||
1040 | if (Arg.isPackExpansion()) | ||||
1041 | Arg = Arg.getPackExpansionPattern(); | ||||
1042 | return Arg; | ||||
1043 | } | ||||
1044 | |||||
1045 | Decl *TemplateInstantiator::TransformDecl(SourceLocation Loc, Decl *D) { | ||||
1046 | if (!D) | ||||
1047 | return nullptr; | ||||
1048 | |||||
1049 | if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) { | ||||
1050 | if (TTP->getDepth() < TemplateArgs.getNumLevels()) { | ||||
1051 | // If the corresponding template argument is NULL or non-existent, it's | ||||
1052 | // because we are performing instantiation from explicitly-specified | ||||
1053 | // template arguments in a function template, but there were some | ||||
1054 | // arguments left unspecified. | ||||
1055 | if (!TemplateArgs.hasTemplateArgument(TTP->getDepth(), | ||||
1056 | TTP->getPosition())) | ||||
1057 | return D; | ||||
1058 | |||||
1059 | TemplateArgument Arg = TemplateArgs(TTP->getDepth(), TTP->getPosition()); | ||||
1060 | |||||
1061 | if (TTP->isParameterPack()) { | ||||
1062 | assert(Arg.getKind() == TemplateArgument::Pack &&((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1063, __PRETTY_FUNCTION__)) | ||||
1063 | "Missing argument pack")((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1063, __PRETTY_FUNCTION__)); | ||||
1064 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1065 | } | ||||
1066 | |||||
1067 | TemplateName Template = Arg.getAsTemplate().getNameToSubstitute(); | ||||
1068 | assert(!Template.isNull() && Template.getAsTemplateDecl() &&((!Template.isNull() && Template.getAsTemplateDecl() && "Wrong kind of template template argument") ? static_cast< void> (0) : __assert_fail ("!Template.isNull() && Template.getAsTemplateDecl() && \"Wrong kind of template template argument\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1069, __PRETTY_FUNCTION__)) | ||||
1069 | "Wrong kind of template template argument")((!Template.isNull() && Template.getAsTemplateDecl() && "Wrong kind of template template argument") ? static_cast< void> (0) : __assert_fail ("!Template.isNull() && Template.getAsTemplateDecl() && \"Wrong kind of template template argument\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1069, __PRETTY_FUNCTION__)); | ||||
1070 | return Template.getAsTemplateDecl(); | ||||
1071 | } | ||||
1072 | |||||
1073 | // Fall through to find the instantiated declaration for this template | ||||
1074 | // template parameter. | ||||
1075 | } | ||||
1076 | |||||
1077 | return SemaRef.FindInstantiatedDecl(Loc, cast<NamedDecl>(D), TemplateArgs); | ||||
1078 | } | ||||
1079 | |||||
1080 | Decl *TemplateInstantiator::TransformDefinition(SourceLocation Loc, Decl *D) { | ||||
1081 | Decl *Inst = getSema().SubstDecl(D, getSema().CurContext, TemplateArgs); | ||||
1082 | if (!Inst) | ||||
1083 | return nullptr; | ||||
1084 | |||||
1085 | getSema().CurrentInstantiationScope->InstantiatedLocal(D, Inst); | ||||
1086 | return Inst; | ||||
1087 | } | ||||
1088 | |||||
1089 | NamedDecl * | ||||
1090 | TemplateInstantiator::TransformFirstQualifierInScope(NamedDecl *D, | ||||
1091 | SourceLocation Loc) { | ||||
1092 | // If the first part of the nested-name-specifier was a template type | ||||
1093 | // parameter, instantiate that type parameter down to a tag type. | ||||
1094 | if (TemplateTypeParmDecl *TTPD = dyn_cast_or_null<TemplateTypeParmDecl>(D)) { | ||||
1095 | const TemplateTypeParmType *TTP | ||||
1096 | = cast<TemplateTypeParmType>(getSema().Context.getTypeDeclType(TTPD)); | ||||
1097 | |||||
1098 | if (TTP->getDepth() < TemplateArgs.getNumLevels()) { | ||||
1099 | // FIXME: This needs testing w/ member access expressions. | ||||
1100 | TemplateArgument Arg = TemplateArgs(TTP->getDepth(), TTP->getIndex()); | ||||
1101 | |||||
1102 | if (TTP->isParameterPack()) { | ||||
1103 | assert(Arg.getKind() == TemplateArgument::Pack &&((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1104, __PRETTY_FUNCTION__)) | ||||
1104 | "Missing argument pack")((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1104, __PRETTY_FUNCTION__)); | ||||
1105 | |||||
1106 | if (getSema().ArgumentPackSubstitutionIndex == -1) | ||||
1107 | return nullptr; | ||||
1108 | |||||
1109 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1110 | } | ||||
1111 | |||||
1112 | QualType T = Arg.getAsType(); | ||||
1113 | if (T.isNull()) | ||||
1114 | return cast_or_null<NamedDecl>(TransformDecl(Loc, D)); | ||||
1115 | |||||
1116 | if (const TagType *Tag = T->getAs<TagType>()) | ||||
1117 | return Tag->getDecl(); | ||||
1118 | |||||
1119 | // The resulting type is not a tag; complain. | ||||
1120 | getSema().Diag(Loc, diag::err_nested_name_spec_non_tag) << T; | ||||
1121 | return nullptr; | ||||
1122 | } | ||||
1123 | } | ||||
1124 | |||||
1125 | return cast_or_null<NamedDecl>(TransformDecl(Loc, D)); | ||||
1126 | } | ||||
1127 | |||||
1128 | VarDecl * | ||||
1129 | TemplateInstantiator::RebuildExceptionDecl(VarDecl *ExceptionDecl, | ||||
1130 | TypeSourceInfo *Declarator, | ||||
1131 | SourceLocation StartLoc, | ||||
1132 | SourceLocation NameLoc, | ||||
1133 | IdentifierInfo *Name) { | ||||
1134 | VarDecl *Var = inherited::RebuildExceptionDecl(ExceptionDecl, Declarator, | ||||
1135 | StartLoc, NameLoc, Name); | ||||
1136 | if (Var) | ||||
1137 | getSema().CurrentInstantiationScope->InstantiatedLocal(ExceptionDecl, Var); | ||||
1138 | return Var; | ||||
1139 | } | ||||
1140 | |||||
1141 | VarDecl *TemplateInstantiator::RebuildObjCExceptionDecl(VarDecl *ExceptionDecl, | ||||
1142 | TypeSourceInfo *TSInfo, | ||||
1143 | QualType T) { | ||||
1144 | VarDecl *Var = inherited::RebuildObjCExceptionDecl(ExceptionDecl, TSInfo, T); | ||||
1145 | if (Var) | ||||
1146 | getSema().CurrentInstantiationScope->InstantiatedLocal(ExceptionDecl, Var); | ||||
1147 | return Var; | ||||
1148 | } | ||||
1149 | |||||
1150 | QualType | ||||
1151 | TemplateInstantiator::RebuildElaboratedType(SourceLocation KeywordLoc, | ||||
1152 | ElaboratedTypeKeyword Keyword, | ||||
1153 | NestedNameSpecifierLoc QualifierLoc, | ||||
1154 | QualType T) { | ||||
1155 | if (const TagType *TT = T->getAs<TagType>()) { | ||||
1156 | TagDecl* TD = TT->getDecl(); | ||||
1157 | |||||
1158 | SourceLocation TagLocation = KeywordLoc; | ||||
1159 | |||||
1160 | IdentifierInfo *Id = TD->getIdentifier(); | ||||
1161 | |||||
1162 | // TODO: should we even warn on struct/class mismatches for this? Seems | ||||
1163 | // like it's likely to produce a lot of spurious errors. | ||||
1164 | if (Id && Keyword != ETK_None && Keyword != ETK_Typename) { | ||||
1165 | TagTypeKind Kind = TypeWithKeyword::getTagTypeKindForKeyword(Keyword); | ||||
1166 | if (!SemaRef.isAcceptableTagRedeclaration(TD, Kind, /*isDefinition*/false, | ||||
1167 | TagLocation, Id)) { | ||||
1168 | SemaRef.Diag(TagLocation, diag::err_use_with_wrong_tag) | ||||
1169 | << Id | ||||
1170 | << FixItHint::CreateReplacement(SourceRange(TagLocation), | ||||
1171 | TD->getKindName()); | ||||
1172 | SemaRef.Diag(TD->getLocation(), diag::note_previous_use); | ||||
1173 | } | ||||
1174 | } | ||||
1175 | } | ||||
1176 | |||||
1177 | return TreeTransform<TemplateInstantiator>::RebuildElaboratedType(KeywordLoc, | ||||
1178 | Keyword, | ||||
1179 | QualifierLoc, | ||||
1180 | T); | ||||
1181 | } | ||||
1182 | |||||
1183 | TemplateName TemplateInstantiator::TransformTemplateName( | ||||
1184 | CXXScopeSpec &SS, TemplateName Name, SourceLocation NameLoc, | ||||
1185 | QualType ObjectType, NamedDecl *FirstQualifierInScope, | ||||
1186 | bool AllowInjectedClassName) { | ||||
1187 | if (TemplateTemplateParmDecl *TTP | ||||
1188 | = dyn_cast_or_null<TemplateTemplateParmDecl>(Name.getAsTemplateDecl())) { | ||||
1189 | if (TTP->getDepth() < TemplateArgs.getNumLevels()) { | ||||
1190 | // If the corresponding template argument is NULL or non-existent, it's | ||||
1191 | // because we are performing instantiation from explicitly-specified | ||||
1192 | // template arguments in a function template, but there were some | ||||
1193 | // arguments left unspecified. | ||||
1194 | if (!TemplateArgs.hasTemplateArgument(TTP->getDepth(), | ||||
1195 | TTP->getPosition())) | ||||
1196 | return Name; | ||||
1197 | |||||
1198 | TemplateArgument Arg = TemplateArgs(TTP->getDepth(), TTP->getPosition()); | ||||
1199 | |||||
1200 | if (TTP->isParameterPack()) { | ||||
1201 | assert(Arg.getKind() == TemplateArgument::Pack &&((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1202, __PRETTY_FUNCTION__)) | ||||
1202 | "Missing argument pack")((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1202, __PRETTY_FUNCTION__)); | ||||
1203 | |||||
1204 | if (getSema().ArgumentPackSubstitutionIndex == -1) { | ||||
1205 | // We have the template argument pack to substitute, but we're not | ||||
1206 | // actually expanding the enclosing pack expansion yet. So, just | ||||
1207 | // keep the entire argument pack. | ||||
1208 | return getSema().Context.getSubstTemplateTemplateParmPack(TTP, Arg); | ||||
1209 | } | ||||
1210 | |||||
1211 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1212 | } | ||||
1213 | |||||
1214 | TemplateName Template = Arg.getAsTemplate().getNameToSubstitute(); | ||||
1215 | assert(!Template.isNull() && "Null template template argument")((!Template.isNull() && "Null template template argument" ) ? static_cast<void> (0) : __assert_fail ("!Template.isNull() && \"Null template template argument\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1215, __PRETTY_FUNCTION__)); | ||||
1216 | assert(!Template.getAsQualifiedTemplateName() &&((!Template.getAsQualifiedTemplateName() && "template decl to substitute is qualified?" ) ? static_cast<void> (0) : __assert_fail ("!Template.getAsQualifiedTemplateName() && \"template decl to substitute is qualified?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1217, __PRETTY_FUNCTION__)) | ||||
1217 | "template decl to substitute is qualified?")((!Template.getAsQualifiedTemplateName() && "template decl to substitute is qualified?" ) ? static_cast<void> (0) : __assert_fail ("!Template.getAsQualifiedTemplateName() && \"template decl to substitute is qualified?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1217, __PRETTY_FUNCTION__)); | ||||
1218 | |||||
1219 | Template = getSema().Context.getSubstTemplateTemplateParm(TTP, Template); | ||||
1220 | return Template; | ||||
1221 | } | ||||
1222 | } | ||||
1223 | |||||
1224 | if (SubstTemplateTemplateParmPackStorage *SubstPack | ||||
1225 | = Name.getAsSubstTemplateTemplateParmPack()) { | ||||
1226 | if (getSema().ArgumentPackSubstitutionIndex == -1) | ||||
1227 | return Name; | ||||
1228 | |||||
1229 | TemplateArgument Arg = SubstPack->getArgumentPack(); | ||||
1230 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1231 | return Arg.getAsTemplate().getNameToSubstitute(); | ||||
1232 | } | ||||
1233 | |||||
1234 | return inherited::TransformTemplateName(SS, Name, NameLoc, ObjectType, | ||||
1235 | FirstQualifierInScope, | ||||
1236 | AllowInjectedClassName); | ||||
1237 | } | ||||
1238 | |||||
1239 | ExprResult | ||||
1240 | TemplateInstantiator::TransformPredefinedExpr(PredefinedExpr *E) { | ||||
1241 | if (!E->isTypeDependent()) | ||||
1242 | return E; | ||||
1243 | |||||
1244 | return getSema().BuildPredefinedExpr(E->getLocation(), E->getIdentKind()); | ||||
1245 | } | ||||
1246 | |||||
1247 | ExprResult | ||||
1248 | TemplateInstantiator::TransformTemplateParmRefExpr(DeclRefExpr *E, | ||||
1249 | NonTypeTemplateParmDecl *NTTP) { | ||||
1250 | // If the corresponding template argument is NULL or non-existent, it's | ||||
1251 | // because we are performing instantiation from explicitly-specified | ||||
1252 | // template arguments in a function template, but there were some | ||||
1253 | // arguments left unspecified. | ||||
1254 | if (!TemplateArgs.hasTemplateArgument(NTTP->getDepth(), | ||||
1255 | NTTP->getPosition())) | ||||
1256 | return E; | ||||
1257 | |||||
1258 | TemplateArgument Arg = TemplateArgs(NTTP->getDepth(), NTTP->getPosition()); | ||||
1259 | |||||
1260 | if (TemplateArgs.getNumLevels() != TemplateArgs.getNumSubstitutedLevels()) { | ||||
1261 | // We're performing a partial substitution, so the substituted argument | ||||
1262 | // could be dependent. As a result we can't create a SubstNonType*Expr | ||||
1263 | // node now, since that represents a fully-substituted argument. | ||||
1264 | // FIXME: We should have some AST representation for this. | ||||
1265 | if (Arg.getKind() == TemplateArgument::Pack) { | ||||
1266 | // FIXME: This won't work for alias templates. | ||||
1267 | assert(Arg.pack_size() == 1 && Arg.pack_begin()->isPackExpansion() &&((Arg.pack_size() == 1 && Arg.pack_begin()->isPackExpansion () && "unexpected pack arguments in partial substitution" ) ? static_cast<void> (0) : __assert_fail ("Arg.pack_size() == 1 && Arg.pack_begin()->isPackExpansion() && \"unexpected pack arguments in partial substitution\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1268, __PRETTY_FUNCTION__)) | ||||
1268 | "unexpected pack arguments in partial substitution")((Arg.pack_size() == 1 && Arg.pack_begin()->isPackExpansion () && "unexpected pack arguments in partial substitution" ) ? static_cast<void> (0) : __assert_fail ("Arg.pack_size() == 1 && Arg.pack_begin()->isPackExpansion() && \"unexpected pack arguments in partial substitution\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1268, __PRETTY_FUNCTION__)); | ||||
1269 | Arg = Arg.pack_begin()->getPackExpansionPattern(); | ||||
1270 | } | ||||
1271 | assert(Arg.getKind() == TemplateArgument::Expression &&((Arg.getKind() == TemplateArgument::Expression && "unexpected nontype template argument kind in partial substitution" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Expression && \"unexpected nontype template argument kind in partial substitution\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1272, __PRETTY_FUNCTION__)) | ||||
1272 | "unexpected nontype template argument kind in partial substitution")((Arg.getKind() == TemplateArgument::Expression && "unexpected nontype template argument kind in partial substitution" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Expression && \"unexpected nontype template argument kind in partial substitution\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1272, __PRETTY_FUNCTION__)); | ||||
1273 | return Arg.getAsExpr(); | ||||
1274 | } | ||||
1275 | |||||
1276 | if (NTTP->isParameterPack()) { | ||||
1277 | assert(Arg.getKind() == TemplateArgument::Pack &&((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1278, __PRETTY_FUNCTION__)) | ||||
1278 | "Missing argument pack")((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1278, __PRETTY_FUNCTION__)); | ||||
1279 | |||||
1280 | if (getSema().ArgumentPackSubstitutionIndex == -1) { | ||||
1281 | // We have an argument pack, but we can't select a particular argument | ||||
1282 | // out of it yet. Therefore, we'll build an expression to hold on to that | ||||
1283 | // argument pack. | ||||
1284 | QualType TargetType = SemaRef.SubstType(NTTP->getType(), TemplateArgs, | ||||
1285 | E->getLocation(), | ||||
1286 | NTTP->getDeclName()); | ||||
1287 | if (TargetType.isNull()) | ||||
1288 | return ExprError(); | ||||
1289 | |||||
1290 | return new (SemaRef.Context) SubstNonTypeTemplateParmPackExpr( | ||||
1291 | TargetType.getNonLValueExprType(SemaRef.Context), | ||||
1292 | TargetType->isReferenceType() ? VK_LValue : VK_RValue, NTTP, | ||||
1293 | E->getLocation(), Arg); | ||||
1294 | } | ||||
1295 | |||||
1296 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1297 | } | ||||
1298 | |||||
1299 | return transformNonTypeTemplateParmRef(NTTP, E->getLocation(), Arg); | ||||
1300 | } | ||||
1301 | |||||
1302 | const LoopHintAttr * | ||||
1303 | TemplateInstantiator::TransformLoopHintAttr(const LoopHintAttr *LH) { | ||||
1304 | Expr *TransformedExpr = getDerived().TransformExpr(LH->getValue()).get(); | ||||
1305 | |||||
1306 | if (TransformedExpr == LH->getValue()) | ||||
1307 | return LH; | ||||
1308 | |||||
1309 | // Generate error if there is a problem with the value. | ||||
1310 | if (getSema().CheckLoopHintExpr(TransformedExpr, LH->getLocation())) | ||||
1311 | return LH; | ||||
1312 | |||||
1313 | // Create new LoopHintValueAttr with integral expression in place of the | ||||
1314 | // non-type template parameter. | ||||
1315 | return LoopHintAttr::CreateImplicit(getSema().Context, LH->getOption(), | ||||
1316 | LH->getState(), TransformedExpr, *LH); | ||||
1317 | } | ||||
1318 | |||||
1319 | ExprResult TemplateInstantiator::transformNonTypeTemplateParmRef( | ||||
1320 | NonTypeTemplateParmDecl *parm, | ||||
1321 | SourceLocation loc, | ||||
1322 | TemplateArgument arg) { | ||||
1323 | ExprResult result; | ||||
1324 | QualType type; | ||||
1325 | |||||
1326 | // The template argument itself might be an expression, in which | ||||
1327 | // case we just return that expression. | ||||
1328 | if (arg.getKind() == TemplateArgument::Expression) { | ||||
1329 | Expr *argExpr = arg.getAsExpr(); | ||||
1330 | result = argExpr; | ||||
1331 | type = argExpr->getType(); | ||||
1332 | |||||
1333 | } else if (arg.getKind() == TemplateArgument::Declaration || | ||||
1334 | arg.getKind() == TemplateArgument::NullPtr) { | ||||
1335 | ValueDecl *VD; | ||||
1336 | if (arg.getKind() == TemplateArgument::Declaration) { | ||||
1337 | VD = arg.getAsDecl(); | ||||
1338 | |||||
1339 | // Find the instantiation of the template argument. This is | ||||
1340 | // required for nested templates. | ||||
1341 | VD = cast_or_null<ValueDecl>( | ||||
1342 | getSema().FindInstantiatedDecl(loc, VD, TemplateArgs)); | ||||
1343 | if (!VD) | ||||
1344 | return ExprError(); | ||||
1345 | } else { | ||||
1346 | // Propagate NULL template argument. | ||||
1347 | VD = nullptr; | ||||
1348 | } | ||||
1349 | |||||
1350 | // Derive the type we want the substituted decl to have. This had | ||||
1351 | // better be non-dependent, or these checks will have serious problems. | ||||
1352 | if (parm->isExpandedParameterPack()) { | ||||
1353 | type = parm->getExpansionType(SemaRef.ArgumentPackSubstitutionIndex); | ||||
1354 | } else if (parm->isParameterPack() && | ||||
1355 | isa<PackExpansionType>(parm->getType())) { | ||||
1356 | type = SemaRef.SubstType( | ||||
1357 | cast<PackExpansionType>(parm->getType())->getPattern(), | ||||
1358 | TemplateArgs, loc, parm->getDeclName()); | ||||
1359 | } else { | ||||
1360 | type = SemaRef.SubstType(VD ? arg.getParamTypeForDecl() : arg.getNullPtrType(), | ||||
1361 | TemplateArgs, loc, parm->getDeclName()); | ||||
1362 | } | ||||
1363 | assert(!type.isNull() && "type substitution failed for param type")((!type.isNull() && "type substitution failed for param type" ) ? static_cast<void> (0) : __assert_fail ("!type.isNull() && \"type substitution failed for param type\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1363, __PRETTY_FUNCTION__)); | ||||
1364 | assert(!type->isDependentType() && "param type still dependent")((!type->isDependentType() && "param type still dependent" ) ? static_cast<void> (0) : __assert_fail ("!type->isDependentType() && \"param type still dependent\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1364, __PRETTY_FUNCTION__)); | ||||
1365 | result = SemaRef.BuildExpressionFromDeclTemplateArgument(arg, type, loc); | ||||
1366 | |||||
1367 | if (!result.isInvalid()) type = result.get()->getType(); | ||||
1368 | } else { | ||||
1369 | result = SemaRef.BuildExpressionFromIntegralTemplateArgument(arg, loc); | ||||
1370 | |||||
1371 | // Note that this type can be different from the type of 'result', | ||||
1372 | // e.g. if it's an enum type. | ||||
1373 | type = arg.getIntegralType(); | ||||
1374 | } | ||||
1375 | if (result.isInvalid()) return ExprError(); | ||||
1376 | |||||
1377 | Expr *resultExpr = result.get(); | ||||
1378 | return new (SemaRef.Context) SubstNonTypeTemplateParmExpr( | ||||
1379 | type, resultExpr->getValueKind(), loc, parm, resultExpr); | ||||
1380 | } | ||||
1381 | |||||
1382 | ExprResult | ||||
1383 | TemplateInstantiator::TransformSubstNonTypeTemplateParmPackExpr( | ||||
1384 | SubstNonTypeTemplateParmPackExpr *E) { | ||||
1385 | if (getSema().ArgumentPackSubstitutionIndex == -1) { | ||||
1386 | // We aren't expanding the parameter pack, so just return ourselves. | ||||
1387 | return E; | ||||
1388 | } | ||||
1389 | |||||
1390 | TemplateArgument Arg = E->getArgumentPack(); | ||||
1391 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1392 | return transformNonTypeTemplateParmRef(E->getParameterPack(), | ||||
1393 | E->getParameterPackLocation(), | ||||
1394 | Arg); | ||||
1395 | } | ||||
1396 | |||||
1397 | ExprResult TemplateInstantiator::RebuildVarDeclRefExpr(VarDecl *PD, | ||||
1398 | SourceLocation Loc) { | ||||
1399 | DeclarationNameInfo NameInfo(PD->getDeclName(), Loc); | ||||
1400 | return getSema().BuildDeclarationNameExpr(CXXScopeSpec(), NameInfo, PD); | ||||
1401 | } | ||||
1402 | |||||
1403 | ExprResult | ||||
1404 | TemplateInstantiator::TransformFunctionParmPackExpr(FunctionParmPackExpr *E) { | ||||
1405 | if (getSema().ArgumentPackSubstitutionIndex != -1) { | ||||
1406 | // We can expand this parameter pack now. | ||||
1407 | VarDecl *D = E->getExpansion(getSema().ArgumentPackSubstitutionIndex); | ||||
1408 | VarDecl *VD = cast_or_null<VarDecl>(TransformDecl(E->getExprLoc(), D)); | ||||
1409 | if (!VD) | ||||
1410 | return ExprError(); | ||||
1411 | return RebuildVarDeclRefExpr(VD, E->getExprLoc()); | ||||
1412 | } | ||||
1413 | |||||
1414 | QualType T = TransformType(E->getType()); | ||||
1415 | if (T.isNull()) | ||||
1416 | return ExprError(); | ||||
1417 | |||||
1418 | // Transform each of the parameter expansions into the corresponding | ||||
1419 | // parameters in the instantiation of the function decl. | ||||
1420 | SmallVector<VarDecl *, 8> Vars; | ||||
1421 | Vars.reserve(E->getNumExpansions()); | ||||
1422 | for (FunctionParmPackExpr::iterator I = E->begin(), End = E->end(); | ||||
1423 | I != End; ++I) { | ||||
1424 | VarDecl *D = cast_or_null<VarDecl>(TransformDecl(E->getExprLoc(), *I)); | ||||
1425 | if (!D) | ||||
1426 | return ExprError(); | ||||
1427 | Vars.push_back(D); | ||||
1428 | } | ||||
1429 | |||||
1430 | auto *PackExpr = | ||||
1431 | FunctionParmPackExpr::Create(getSema().Context, T, E->getParameterPack(), | ||||
1432 | E->getParameterPackLocation(), Vars); | ||||
1433 | getSema().MarkFunctionParmPackReferenced(PackExpr); | ||||
1434 | return PackExpr; | ||||
1435 | } | ||||
1436 | |||||
1437 | ExprResult | ||||
1438 | TemplateInstantiator::TransformFunctionParmPackRefExpr(DeclRefExpr *E, | ||||
1439 | VarDecl *PD) { | ||||
1440 | typedef LocalInstantiationScope::DeclArgumentPack DeclArgumentPack; | ||||
1441 | llvm::PointerUnion<Decl *, DeclArgumentPack *> *Found | ||||
1442 | = getSema().CurrentInstantiationScope->findInstantiationOf(PD); | ||||
1443 | assert(Found && "no instantiation for parameter pack")((Found && "no instantiation for parameter pack") ? static_cast <void> (0) : __assert_fail ("Found && \"no instantiation for parameter pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1443, __PRETTY_FUNCTION__)); | ||||
1444 | |||||
1445 | Decl *TransformedDecl; | ||||
1446 | if (DeclArgumentPack *Pack = Found->dyn_cast<DeclArgumentPack *>()) { | ||||
1447 | // If this is a reference to a function parameter pack which we can | ||||
1448 | // substitute but can't yet expand, build a FunctionParmPackExpr for it. | ||||
1449 | if (getSema().ArgumentPackSubstitutionIndex == -1) { | ||||
1450 | QualType T = TransformType(E->getType()); | ||||
1451 | if (T.isNull()) | ||||
1452 | return ExprError(); | ||||
1453 | auto *PackExpr = FunctionParmPackExpr::Create(getSema().Context, T, PD, | ||||
1454 | E->getExprLoc(), *Pack); | ||||
1455 | getSema().MarkFunctionParmPackReferenced(PackExpr); | ||||
1456 | return PackExpr; | ||||
1457 | } | ||||
1458 | |||||
1459 | TransformedDecl = (*Pack)[getSema().ArgumentPackSubstitutionIndex]; | ||||
1460 | } else { | ||||
1461 | TransformedDecl = Found->get<Decl*>(); | ||||
1462 | } | ||||
1463 | |||||
1464 | // We have either an unexpanded pack or a specific expansion. | ||||
1465 | return RebuildVarDeclRefExpr(cast<VarDecl>(TransformedDecl), E->getExprLoc()); | ||||
1466 | } | ||||
1467 | |||||
1468 | ExprResult | ||||
1469 | TemplateInstantiator::TransformDeclRefExpr(DeclRefExpr *E) { | ||||
1470 | NamedDecl *D = E->getDecl(); | ||||
1471 | |||||
1472 | // Handle references to non-type template parameters and non-type template | ||||
1473 | // parameter packs. | ||||
1474 | if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) { | ||||
1475 | if (NTTP->getDepth() < TemplateArgs.getNumLevels()) | ||||
1476 | return TransformTemplateParmRefExpr(E, NTTP); | ||||
1477 | |||||
1478 | // We have a non-type template parameter that isn't fully substituted; | ||||
1479 | // FindInstantiatedDecl will find it in the local instantiation scope. | ||||
1480 | } | ||||
1481 | |||||
1482 | // Handle references to function parameter packs. | ||||
1483 | if (VarDecl *PD = dyn_cast<VarDecl>(D)) | ||||
1484 | if (PD->isParameterPack()) | ||||
1485 | return TransformFunctionParmPackRefExpr(E, PD); | ||||
1486 | |||||
1487 | return TreeTransform<TemplateInstantiator>::TransformDeclRefExpr(E); | ||||
1488 | } | ||||
1489 | |||||
1490 | ExprResult TemplateInstantiator::TransformCXXDefaultArgExpr( | ||||
1491 | CXXDefaultArgExpr *E) { | ||||
1492 | assert(!cast<FunctionDecl>(E->getParam()->getDeclContext())->((!cast<FunctionDecl>(E->getParam()->getDeclContext ())-> getDescribedFunctionTemplate() && "Default arg expressions are never formed in dependent cases." ) ? static_cast<void> (0) : __assert_fail ("!cast<FunctionDecl>(E->getParam()->getDeclContext())-> getDescribedFunctionTemplate() && \"Default arg expressions are never formed in dependent cases.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1494, __PRETTY_FUNCTION__)) | ||||
1493 | getDescribedFunctionTemplate() &&((!cast<FunctionDecl>(E->getParam()->getDeclContext ())-> getDescribedFunctionTemplate() && "Default arg expressions are never formed in dependent cases." ) ? static_cast<void> (0) : __assert_fail ("!cast<FunctionDecl>(E->getParam()->getDeclContext())-> getDescribedFunctionTemplate() && \"Default arg expressions are never formed in dependent cases.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1494, __PRETTY_FUNCTION__)) | ||||
1494 | "Default arg expressions are never formed in dependent cases.")((!cast<FunctionDecl>(E->getParam()->getDeclContext ())-> getDescribedFunctionTemplate() && "Default arg expressions are never formed in dependent cases." ) ? static_cast<void> (0) : __assert_fail ("!cast<FunctionDecl>(E->getParam()->getDeclContext())-> getDescribedFunctionTemplate() && \"Default arg expressions are never formed in dependent cases.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1494, __PRETTY_FUNCTION__)); | ||||
1495 | return SemaRef.BuildCXXDefaultArgExpr(E->getUsedLocation(), | ||||
1496 | cast<FunctionDecl>(E->getParam()->getDeclContext()), | ||||
1497 | E->getParam()); | ||||
1498 | } | ||||
1499 | |||||
1500 | template<typename Fn> | ||||
1501 | QualType TemplateInstantiator::TransformFunctionProtoType(TypeLocBuilder &TLB, | ||||
1502 | FunctionProtoTypeLoc TL, | ||||
1503 | CXXRecordDecl *ThisContext, | ||||
1504 | Qualifiers ThisTypeQuals, | ||||
1505 | Fn TransformExceptionSpec) { | ||||
1506 | // We need a local instantiation scope for this function prototype. | ||||
1507 | LocalInstantiationScope Scope(SemaRef, /*CombineWithOuterScope=*/true); | ||||
1508 | return inherited::TransformFunctionProtoType( | ||||
1509 | TLB, TL, ThisContext, ThisTypeQuals, TransformExceptionSpec); | ||||
1510 | } | ||||
1511 | |||||
1512 | ParmVarDecl * | ||||
1513 | TemplateInstantiator::TransformFunctionTypeParam(ParmVarDecl *OldParm, | ||||
1514 | int indexAdjustment, | ||||
1515 | Optional<unsigned> NumExpansions, | ||||
1516 | bool ExpectParameterPack) { | ||||
1517 | return SemaRef.SubstParmVarDecl(OldParm, TemplateArgs, indexAdjustment, | ||||
1518 | NumExpansions, ExpectParameterPack); | ||||
1519 | } | ||||
1520 | |||||
1521 | QualType | ||||
1522 | TemplateInstantiator::TransformTemplateTypeParmType(TypeLocBuilder &TLB, | ||||
1523 | TemplateTypeParmTypeLoc TL) { | ||||
1524 | const TemplateTypeParmType *T = TL.getTypePtr(); | ||||
1525 | if (T->getDepth() < TemplateArgs.getNumLevels()) { | ||||
1526 | // Replace the template type parameter with its corresponding | ||||
1527 | // template argument. | ||||
1528 | |||||
1529 | // If the corresponding template argument is NULL or doesn't exist, it's | ||||
1530 | // because we are performing instantiation from explicitly-specified | ||||
1531 | // template arguments in a function template class, but there were some | ||||
1532 | // arguments left unspecified. | ||||
1533 | if (!TemplateArgs.hasTemplateArgument(T->getDepth(), T->getIndex())) { | ||||
1534 | TemplateTypeParmTypeLoc NewTL | ||||
1535 | = TLB.push<TemplateTypeParmTypeLoc>(TL.getType()); | ||||
1536 | NewTL.setNameLoc(TL.getNameLoc()); | ||||
1537 | return TL.getType(); | ||||
1538 | } | ||||
1539 | |||||
1540 | TemplateArgument Arg = TemplateArgs(T->getDepth(), T->getIndex()); | ||||
1541 | |||||
1542 | if (T->isParameterPack()) { | ||||
1543 | assert(Arg.getKind() == TemplateArgument::Pack &&((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1544, __PRETTY_FUNCTION__)) | ||||
1544 | "Missing argument pack")((Arg.getKind() == TemplateArgument::Pack && "Missing argument pack" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Pack && \"Missing argument pack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1544, __PRETTY_FUNCTION__)); | ||||
1545 | |||||
1546 | if (getSema().ArgumentPackSubstitutionIndex == -1) { | ||||
1547 | // We have the template argument pack, but we're not expanding the | ||||
1548 | // enclosing pack expansion yet. Just save the template argument | ||||
1549 | // pack for later substitution. | ||||
1550 | QualType Result | ||||
1551 | = getSema().Context.getSubstTemplateTypeParmPackType(T, Arg); | ||||
1552 | SubstTemplateTypeParmPackTypeLoc NewTL | ||||
1553 | = TLB.push<SubstTemplateTypeParmPackTypeLoc>(Result); | ||||
1554 | NewTL.setNameLoc(TL.getNameLoc()); | ||||
1555 | return Result; | ||||
1556 | } | ||||
1557 | |||||
1558 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1559 | } | ||||
1560 | |||||
1561 | assert(Arg.getKind() == TemplateArgument::Type &&((Arg.getKind() == TemplateArgument::Type && "Template argument kind mismatch" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Type && \"Template argument kind mismatch\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1562, __PRETTY_FUNCTION__)) | ||||
1562 | "Template argument kind mismatch")((Arg.getKind() == TemplateArgument::Type && "Template argument kind mismatch" ) ? static_cast<void> (0) : __assert_fail ("Arg.getKind() == TemplateArgument::Type && \"Template argument kind mismatch\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1562, __PRETTY_FUNCTION__)); | ||||
1563 | |||||
1564 | QualType Replacement = Arg.getAsType(); | ||||
1565 | |||||
1566 | // TODO: only do this uniquing once, at the start of instantiation. | ||||
1567 | QualType Result | ||||
1568 | = getSema().Context.getSubstTemplateTypeParmType(T, Replacement); | ||||
1569 | SubstTemplateTypeParmTypeLoc NewTL | ||||
1570 | = TLB.push<SubstTemplateTypeParmTypeLoc>(Result); | ||||
1571 | NewTL.setNameLoc(TL.getNameLoc()); | ||||
1572 | return Result; | ||||
1573 | } | ||||
1574 | |||||
1575 | // The template type parameter comes from an inner template (e.g., | ||||
1576 | // the template parameter list of a member template inside the | ||||
1577 | // template we are instantiating). Create a new template type | ||||
1578 | // parameter with the template "level" reduced by one. | ||||
1579 | TemplateTypeParmDecl *NewTTPDecl = nullptr; | ||||
1580 | if (TemplateTypeParmDecl *OldTTPDecl = T->getDecl()) | ||||
1581 | NewTTPDecl = cast_or_null<TemplateTypeParmDecl>( | ||||
1582 | TransformDecl(TL.getNameLoc(), OldTTPDecl)); | ||||
1583 | |||||
1584 | QualType Result = getSema().Context.getTemplateTypeParmType( | ||||
1585 | T->getDepth() - TemplateArgs.getNumSubstitutedLevels(), T->getIndex(), | ||||
1586 | T->isParameterPack(), NewTTPDecl); | ||||
1587 | TemplateTypeParmTypeLoc NewTL = TLB.push<TemplateTypeParmTypeLoc>(Result); | ||||
1588 | NewTL.setNameLoc(TL.getNameLoc()); | ||||
1589 | return Result; | ||||
1590 | } | ||||
1591 | |||||
1592 | QualType | ||||
1593 | TemplateInstantiator::TransformSubstTemplateTypeParmPackType( | ||||
1594 | TypeLocBuilder &TLB, | ||||
1595 | SubstTemplateTypeParmPackTypeLoc TL) { | ||||
1596 | if (getSema().ArgumentPackSubstitutionIndex == -1) { | ||||
1597 | // We aren't expanding the parameter pack, so just return ourselves. | ||||
1598 | SubstTemplateTypeParmPackTypeLoc NewTL | ||||
1599 | = TLB.push<SubstTemplateTypeParmPackTypeLoc>(TL.getType()); | ||||
1600 | NewTL.setNameLoc(TL.getNameLoc()); | ||||
1601 | return TL.getType(); | ||||
1602 | } | ||||
1603 | |||||
1604 | TemplateArgument Arg = TL.getTypePtr()->getArgumentPack(); | ||||
1605 | Arg = getPackSubstitutedTemplateArgument(getSema(), Arg); | ||||
1606 | QualType Result = Arg.getAsType(); | ||||
1607 | |||||
1608 | Result = getSema().Context.getSubstTemplateTypeParmType( | ||||
1609 | TL.getTypePtr()->getReplacedParameter(), | ||||
1610 | Result); | ||||
1611 | SubstTemplateTypeParmTypeLoc NewTL | ||||
1612 | = TLB.push<SubstTemplateTypeParmTypeLoc>(Result); | ||||
1613 | NewTL.setNameLoc(TL.getNameLoc()); | ||||
1614 | return Result; | ||||
1615 | } | ||||
1616 | |||||
1617 | /// Perform substitution on the type T with a given set of template | ||||
1618 | /// arguments. | ||||
1619 | /// | ||||
1620 | /// This routine substitutes the given template arguments into the | ||||
1621 | /// type T and produces the instantiated type. | ||||
1622 | /// | ||||
1623 | /// \param T the type into which the template arguments will be | ||||
1624 | /// substituted. If this type is not dependent, it will be returned | ||||
1625 | /// immediately. | ||||
1626 | /// | ||||
1627 | /// \param Args the template arguments that will be | ||||
1628 | /// substituted for the top-level template parameters within T. | ||||
1629 | /// | ||||
1630 | /// \param Loc the location in the source code where this substitution | ||||
1631 | /// is being performed. It will typically be the location of the | ||||
1632 | /// declarator (if we're instantiating the type of some declaration) | ||||
1633 | /// or the location of the type in the source code (if, e.g., we're | ||||
1634 | /// instantiating the type of a cast expression). | ||||
1635 | /// | ||||
1636 | /// \param Entity the name of the entity associated with a declaration | ||||
1637 | /// being instantiated (if any). May be empty to indicate that there | ||||
1638 | /// is no such entity (if, e.g., this is a type that occurs as part of | ||||
1639 | /// a cast expression) or that the entity has no name (e.g., an | ||||
1640 | /// unnamed function parameter). | ||||
1641 | /// | ||||
1642 | /// \param AllowDeducedTST Whether a DeducedTemplateSpecializationType is | ||||
1643 | /// acceptable as the top level type of the result. | ||||
1644 | /// | ||||
1645 | /// \returns If the instantiation succeeds, the instantiated | ||||
1646 | /// type. Otherwise, produces diagnostics and returns a NULL type. | ||||
1647 | TypeSourceInfo *Sema::SubstType(TypeSourceInfo *T, | ||||
1648 | const MultiLevelTemplateArgumentList &Args, | ||||
1649 | SourceLocation Loc, | ||||
1650 | DeclarationName Entity, | ||||
1651 | bool AllowDeducedTST) { | ||||
1652 | assert(!CodeSynthesisContexts.empty() &&((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1654, __PRETTY_FUNCTION__)) | ||||
1653 | "Cannot perform an instantiation without some context on the "((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1654, __PRETTY_FUNCTION__)) | ||||
1654 | "instantiation stack")((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1654, __PRETTY_FUNCTION__)); | ||||
1655 | |||||
1656 | if (!T->getType()->isInstantiationDependentType() && | ||||
1657 | !T->getType()->isVariablyModifiedType()) | ||||
1658 | return T; | ||||
1659 | |||||
1660 | TemplateInstantiator Instantiator(*this, Args, Loc, Entity); | ||||
1661 | return AllowDeducedTST ? Instantiator.TransformTypeWithDeducedTST(T) | ||||
1662 | : Instantiator.TransformType(T); | ||||
1663 | } | ||||
1664 | |||||
1665 | TypeSourceInfo *Sema::SubstType(TypeLoc TL, | ||||
1666 | const MultiLevelTemplateArgumentList &Args, | ||||
1667 | SourceLocation Loc, | ||||
1668 | DeclarationName Entity) { | ||||
1669 | assert(!CodeSynthesisContexts.empty() &&((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1671, __PRETTY_FUNCTION__)) | ||||
1670 | "Cannot perform an instantiation without some context on the "((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1671, __PRETTY_FUNCTION__)) | ||||
1671 | "instantiation stack")((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1671, __PRETTY_FUNCTION__)); | ||||
1672 | |||||
1673 | if (TL.getType().isNull()) | ||||
1674 | return nullptr; | ||||
1675 | |||||
1676 | if (!TL.getType()->isInstantiationDependentType() && | ||||
1677 | !TL.getType()->isVariablyModifiedType()) { | ||||
1678 | // FIXME: Make a copy of the TypeLoc data here, so that we can | ||||
1679 | // return a new TypeSourceInfo. Inefficient! | ||||
1680 | TypeLocBuilder TLB; | ||||
1681 | TLB.pushFullCopy(TL); | ||||
1682 | return TLB.getTypeSourceInfo(Context, TL.getType()); | ||||
1683 | } | ||||
1684 | |||||
1685 | TemplateInstantiator Instantiator(*this, Args, Loc, Entity); | ||||
1686 | TypeLocBuilder TLB; | ||||
1687 | TLB.reserve(TL.getFullDataSize()); | ||||
1688 | QualType Result = Instantiator.TransformType(TLB, TL); | ||||
1689 | if (Result.isNull()) | ||||
1690 | return nullptr; | ||||
1691 | |||||
1692 | return TLB.getTypeSourceInfo(Context, Result); | ||||
1693 | } | ||||
1694 | |||||
1695 | /// Deprecated form of the above. | ||||
1696 | QualType Sema::SubstType(QualType T, | ||||
1697 | const MultiLevelTemplateArgumentList &TemplateArgs, | ||||
1698 | SourceLocation Loc, DeclarationName Entity) { | ||||
1699 | assert(!CodeSynthesisContexts.empty() &&((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1701, __PRETTY_FUNCTION__)) | ||||
1700 | "Cannot perform an instantiation without some context on the "((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1701, __PRETTY_FUNCTION__)) | ||||
1701 | "instantiation stack")((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1701, __PRETTY_FUNCTION__)); | ||||
1702 | |||||
1703 | // If T is not a dependent type or a variably-modified type, there | ||||
1704 | // is nothing to do. | ||||
1705 | if (!T->isInstantiationDependentType() && !T->isVariablyModifiedType()) | ||||
1706 | return T; | ||||
1707 | |||||
1708 | TemplateInstantiator Instantiator(*this, TemplateArgs, Loc, Entity); | ||||
1709 | return Instantiator.TransformType(T); | ||||
1710 | } | ||||
1711 | |||||
1712 | static bool NeedsInstantiationAsFunctionType(TypeSourceInfo *T) { | ||||
1713 | if (T->getType()->isInstantiationDependentType() || | ||||
1714 | T->getType()->isVariablyModifiedType()) | ||||
1715 | return true; | ||||
1716 | |||||
1717 | TypeLoc TL = T->getTypeLoc().IgnoreParens(); | ||||
1718 | if (!TL.getAs<FunctionProtoTypeLoc>()) | ||||
1719 | return false; | ||||
1720 | |||||
1721 | FunctionProtoTypeLoc FP = TL.castAs<FunctionProtoTypeLoc>(); | ||||
1722 | for (ParmVarDecl *P : FP.getParams()) { | ||||
1723 | // This must be synthesized from a typedef. | ||||
1724 | if (!P) continue; | ||||
1725 | |||||
1726 | // If there are any parameters, a new TypeSourceInfo that refers to the | ||||
1727 | // instantiated parameters must be built. | ||||
1728 | return true; | ||||
1729 | } | ||||
1730 | |||||
1731 | return false; | ||||
1732 | } | ||||
1733 | |||||
1734 | /// A form of SubstType intended specifically for instantiating the | ||||
1735 | /// type of a FunctionDecl. Its purpose is solely to force the | ||||
1736 | /// instantiation of default-argument expressions and to avoid | ||||
1737 | /// instantiating an exception-specification. | ||||
1738 | TypeSourceInfo *Sema::SubstFunctionDeclType(TypeSourceInfo *T, | ||||
1739 | const MultiLevelTemplateArgumentList &Args, | ||||
1740 | SourceLocation Loc, | ||||
1741 | DeclarationName Entity, | ||||
1742 | CXXRecordDecl *ThisContext, | ||||
1743 | Qualifiers ThisTypeQuals) { | ||||
1744 | assert(!CodeSynthesisContexts.empty() &&((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1746, __PRETTY_FUNCTION__)) | ||||
1745 | "Cannot perform an instantiation without some context on the "((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1746, __PRETTY_FUNCTION__)) | ||||
1746 | "instantiation stack")((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1746, __PRETTY_FUNCTION__)); | ||||
1747 | |||||
1748 | if (!NeedsInstantiationAsFunctionType(T)) | ||||
1749 | return T; | ||||
1750 | |||||
1751 | TemplateInstantiator Instantiator(*this, Args, Loc, Entity); | ||||
1752 | |||||
1753 | TypeLocBuilder TLB; | ||||
1754 | |||||
1755 | TypeLoc TL = T->getTypeLoc(); | ||||
1756 | TLB.reserve(TL.getFullDataSize()); | ||||
1757 | |||||
1758 | QualType Result; | ||||
1759 | |||||
1760 | if (FunctionProtoTypeLoc Proto = | ||||
1761 | TL.IgnoreParens().getAs<FunctionProtoTypeLoc>()) { | ||||
1762 | // Instantiate the type, other than its exception specification. The | ||||
1763 | // exception specification is instantiated in InitFunctionInstantiation | ||||
1764 | // once we've built the FunctionDecl. | ||||
1765 | // FIXME: Set the exception specification to EST_Uninstantiated here, | ||||
1766 | // instead of rebuilding the function type again later. | ||||
1767 | Result = Instantiator.TransformFunctionProtoType( | ||||
1768 | TLB, Proto, ThisContext, ThisTypeQuals, | ||||
1769 | [](FunctionProtoType::ExceptionSpecInfo &ESI, | ||||
1770 | bool &Changed) { return false; }); | ||||
1771 | } else { | ||||
1772 | Result = Instantiator.TransformType(TLB, TL); | ||||
1773 | } | ||||
1774 | if (Result.isNull()) | ||||
1775 | return nullptr; | ||||
1776 | |||||
1777 | return TLB.getTypeSourceInfo(Context, Result); | ||||
1778 | } | ||||
1779 | |||||
1780 | bool Sema::SubstExceptionSpec(SourceLocation Loc, | ||||
1781 | FunctionProtoType::ExceptionSpecInfo &ESI, | ||||
1782 | SmallVectorImpl<QualType> &ExceptionStorage, | ||||
1783 | const MultiLevelTemplateArgumentList &Args) { | ||||
1784 | assert(ESI.Type != EST_Uninstantiated)((ESI.Type != EST_Uninstantiated) ? static_cast<void> ( 0) : __assert_fail ("ESI.Type != EST_Uninstantiated", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1784, __PRETTY_FUNCTION__)); | ||||
1785 | |||||
1786 | bool Changed = false; | ||||
1787 | TemplateInstantiator Instantiator(*this, Args, Loc, DeclarationName()); | ||||
1788 | return Instantiator.TransformExceptionSpec(Loc, ESI, ExceptionStorage, | ||||
1789 | Changed); | ||||
1790 | } | ||||
1791 | |||||
1792 | void Sema::SubstExceptionSpec(FunctionDecl *New, const FunctionProtoType *Proto, | ||||
1793 | const MultiLevelTemplateArgumentList &Args) { | ||||
1794 | FunctionProtoType::ExceptionSpecInfo ESI = | ||||
1795 | Proto->getExtProtoInfo().ExceptionSpec; | ||||
1796 | |||||
1797 | SmallVector<QualType, 4> ExceptionStorage; | ||||
1798 | if (SubstExceptionSpec(New->getTypeSourceInfo()->getTypeLoc().getEndLoc(), | ||||
1799 | ESI, ExceptionStorage, Args)) | ||||
1800 | // On error, recover by dropping the exception specification. | ||||
1801 | ESI.Type = EST_None; | ||||
1802 | |||||
1803 | UpdateExceptionSpec(New, ESI); | ||||
1804 | } | ||||
1805 | |||||
1806 | ParmVarDecl *Sema::SubstParmVarDecl(ParmVarDecl *OldParm, | ||||
1807 | const MultiLevelTemplateArgumentList &TemplateArgs, | ||||
1808 | int indexAdjustment, | ||||
1809 | Optional<unsigned> NumExpansions, | ||||
1810 | bool ExpectParameterPack) { | ||||
1811 | TypeSourceInfo *OldDI = OldParm->getTypeSourceInfo(); | ||||
1812 | TypeSourceInfo *NewDI = nullptr; | ||||
1813 | |||||
1814 | TypeLoc OldTL = OldDI->getTypeLoc(); | ||||
1815 | if (PackExpansionTypeLoc ExpansionTL = OldTL.getAs<PackExpansionTypeLoc>()) { | ||||
1816 | |||||
1817 | // We have a function parameter pack. Substitute into the pattern of the | ||||
1818 | // expansion. | ||||
1819 | NewDI = SubstType(ExpansionTL.getPatternLoc(), TemplateArgs, | ||||
1820 | OldParm->getLocation(), OldParm->getDeclName()); | ||||
1821 | if (!NewDI) | ||||
1822 | return nullptr; | ||||
1823 | |||||
1824 | if (NewDI->getType()->containsUnexpandedParameterPack()) { | ||||
1825 | // We still have unexpanded parameter packs, which means that | ||||
1826 | // our function parameter is still a function parameter pack. | ||||
1827 | // Therefore, make its type a pack expansion type. | ||||
1828 | NewDI = CheckPackExpansion(NewDI, ExpansionTL.getEllipsisLoc(), | ||||
1829 | NumExpansions); | ||||
1830 | } else if (ExpectParameterPack) { | ||||
1831 | // We expected to get a parameter pack but didn't (because the type | ||||
1832 | // itself is not a pack expansion type), so complain. This can occur when | ||||
1833 | // the substitution goes through an alias template that "loses" the | ||||
1834 | // pack expansion. | ||||
1835 | Diag(OldParm->getLocation(), | ||||
1836 | diag::err_function_parameter_pack_without_parameter_packs) | ||||
1837 | << NewDI->getType(); | ||||
1838 | return nullptr; | ||||
1839 | } | ||||
1840 | } else { | ||||
1841 | NewDI = SubstType(OldDI, TemplateArgs, OldParm->getLocation(), | ||||
1842 | OldParm->getDeclName()); | ||||
1843 | } | ||||
1844 | |||||
1845 | if (!NewDI) | ||||
1846 | return nullptr; | ||||
1847 | |||||
1848 | if (NewDI->getType()->isVoidType()) { | ||||
1849 | Diag(OldParm->getLocation(), diag::err_param_with_void_type); | ||||
1850 | return nullptr; | ||||
1851 | } | ||||
1852 | |||||
1853 | ParmVarDecl *NewParm = CheckParameter(Context.getTranslationUnitDecl(), | ||||
1854 | OldParm->getInnerLocStart(), | ||||
1855 | OldParm->getLocation(), | ||||
1856 | OldParm->getIdentifier(), | ||||
1857 | NewDI->getType(), NewDI, | ||||
1858 | OldParm->getStorageClass()); | ||||
1859 | if (!NewParm) | ||||
1860 | return nullptr; | ||||
1861 | |||||
1862 | // Mark the (new) default argument as uninstantiated (if any). | ||||
1863 | if (OldParm->hasUninstantiatedDefaultArg()) { | ||||
1864 | Expr *Arg = OldParm->getUninstantiatedDefaultArg(); | ||||
1865 | NewParm->setUninstantiatedDefaultArg(Arg); | ||||
1866 | } else if (OldParm->hasUnparsedDefaultArg()) { | ||||
1867 | NewParm->setUnparsedDefaultArg(); | ||||
1868 | UnparsedDefaultArgInstantiations[OldParm].push_back(NewParm); | ||||
1869 | } else if (Expr *Arg = OldParm->getDefaultArg()) { | ||||
1870 | FunctionDecl *OwningFunc = cast<FunctionDecl>(OldParm->getDeclContext()); | ||||
1871 | if (OwningFunc->isLexicallyWithinFunctionOrMethod()) { | ||||
1872 | // Instantiate default arguments for methods of local classes (DR1484) | ||||
1873 | // and non-defining declarations. | ||||
1874 | Sema::ContextRAII SavedContext(*this, OwningFunc); | ||||
1875 | LocalInstantiationScope Local(*this, true); | ||||
1876 | ExprResult NewArg = SubstExpr(Arg, TemplateArgs); | ||||
1877 | if (NewArg.isUsable()) { | ||||
1878 | // It would be nice if we still had this. | ||||
1879 | SourceLocation EqualLoc = NewArg.get()->getBeginLoc(); | ||||
1880 | SetParamDefaultArgument(NewParm, NewArg.get(), EqualLoc); | ||||
1881 | } | ||||
1882 | } else { | ||||
1883 | // FIXME: if we non-lazily instantiated non-dependent default args for | ||||
1884 | // non-dependent parameter types we could remove a bunch of duplicate | ||||
1885 | // conversion warnings for such arguments. | ||||
1886 | NewParm->setUninstantiatedDefaultArg(Arg); | ||||
1887 | } | ||||
1888 | } | ||||
1889 | |||||
1890 | NewParm->setHasInheritedDefaultArg(OldParm->hasInheritedDefaultArg()); | ||||
1891 | |||||
1892 | if (OldParm->isParameterPack() && !NewParm->isParameterPack()) { | ||||
1893 | // Add the new parameter to the instantiated parameter pack. | ||||
1894 | CurrentInstantiationScope->InstantiatedLocalPackArg(OldParm, NewParm); | ||||
1895 | } else { | ||||
1896 | // Introduce an Old -> New mapping | ||||
1897 | CurrentInstantiationScope->InstantiatedLocal(OldParm, NewParm); | ||||
1898 | } | ||||
1899 | |||||
1900 | // FIXME: OldParm may come from a FunctionProtoType, in which case CurContext | ||||
1901 | // can be anything, is this right ? | ||||
1902 | NewParm->setDeclContext(CurContext); | ||||
1903 | |||||
1904 | NewParm->setScopeInfo(OldParm->getFunctionScopeDepth(), | ||||
1905 | OldParm->getFunctionScopeIndex() + indexAdjustment); | ||||
1906 | |||||
1907 | InstantiateAttrs(TemplateArgs, OldParm, NewParm); | ||||
1908 | |||||
1909 | return NewParm; | ||||
1910 | } | ||||
1911 | |||||
1912 | /// Substitute the given template arguments into the given set of | ||||
1913 | /// parameters, producing the set of parameter types that would be generated | ||||
1914 | /// from such a substitution. | ||||
1915 | bool Sema::SubstParmTypes( | ||||
1916 | SourceLocation Loc, ArrayRef<ParmVarDecl *> Params, | ||||
1917 | const FunctionProtoType::ExtParameterInfo *ExtParamInfos, | ||||
1918 | const MultiLevelTemplateArgumentList &TemplateArgs, | ||||
1919 | SmallVectorImpl<QualType> &ParamTypes, | ||||
1920 | SmallVectorImpl<ParmVarDecl *> *OutParams, | ||||
1921 | ExtParameterInfoBuilder &ParamInfos) { | ||||
1922 | assert(!CodeSynthesisContexts.empty() &&((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1924, __PRETTY_FUNCTION__)) | ||||
1923 | "Cannot perform an instantiation without some context on the "((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1924, __PRETTY_FUNCTION__)) | ||||
1924 | "instantiation stack")((!CodeSynthesisContexts.empty() && "Cannot perform an instantiation without some context on the " "instantiation stack") ? static_cast<void> (0) : __assert_fail ("!CodeSynthesisContexts.empty() && \"Cannot perform an instantiation without some context on the \" \"instantiation stack\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/Sema/SemaTemplateInstantiate.cpp" , 1924, __PRETTY_FUNCTION__)); | ||||
1925 | |||||
1926 | TemplateInstantiator Instantiator(*this, TemplateArgs, Loc, | ||||
1927 | DeclarationName()); | ||||
1928 | return Instantiator.TransformFunctionTypeParams( | ||||
1929 | Loc, Params, nullptr, ExtParamInfos, ParamTypes, OutParams, ParamInfos); | ||||
1930 | } | ||||
1931 | |||||
1932 | /// Perform substitution on the base class specifiers of the | ||||
1933 | /// given class template specialization. | ||||
1934 | /// | ||||
1935 | /// Produces a diagnostic and returns true on error, returns false and | ||||
1936 | /// attaches the instantiated base classes to the class template | ||||
1937 | /// specialization if successful. | ||||
1938 | bool | ||||
1939 | Sema::SubstBaseSpecifiers(CXXRecordDecl *Instantiation, | ||||
1940 | CXXRecordDecl *Pattern, | ||||
1941 | const MultiLevelTemplateArgumentList &TemplateArgs) { | ||||
1942 | bool Invalid = false; | ||||
1943 | SmallVector<CXXBaseSpecifier*, 4> InstantiatedBases; | ||||
1944 | for (const auto &Base : Pattern->bases()) { | ||||
1945 | if (!Base.getType()->isDependentType()) { | ||||
1946 | if (const CXXRecordDecl *RD = Base.getType()->getAsCXXRecordDecl()) { | ||||
1947 | if (RD->isInvalidDecl()) | ||||
1948 | Instantiation->setInvalidDecl(); | ||||
1949 | } | ||||
1950 | InstantiatedBases.push_back(new (Context) CXXBaseSpecifier(Base)); | ||||
1951 | continue; | ||||
1952 | } | ||||
1953 | |||||
1954 | SourceLocation EllipsisLoc; | ||||
1955 | TypeSourceInfo *BaseTypeLoc; | ||||
1956 | if (Base.isPackExpansion()) { | ||||
1957 | // This is a pack expansion. See whether we should expand it now, or | ||||
1958 | // wait until later. | ||||
1959 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | ||||
1960 | collectUnexpandedParameterPacks(Base.getTypeSourceInfo()->getTypeLoc(), | ||||
1961 | Unexpanded); | ||||
1962 | bool ShouldExpand = false; | ||||
1963 | bool RetainExpansion = false; | ||||
1964 | Optional<unsigned> NumExpansions; | ||||
1965 | if (CheckParameterPacksForExpansion(Base.getEllipsisLoc(), | ||||
1966 | Base.getSourceRange(), | ||||
1967 | Unexpanded, | ||||
1968 | TemplateArgs, ShouldExpand, | ||||
1969 | RetainExpansion, | ||||
1970 | NumExpansions)) { | ||||
1971 | Invalid = true; | ||||
1972 | continue; | ||||
1973 | } | ||||
1974 | |||||
1975 | // If we should expand this pack expansion now, do so. | ||||
1976 | if (ShouldExpand) { | ||||
1977 | for (unsigned I = 0; I != *NumExpansions; ++I) { | ||||
1978 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(*this, I); | ||||
1979 | |||||
1980 | TypeSourceInfo *BaseTypeLoc = SubstType(Base.getTypeSourceInfo(), | ||||
1981 | TemplateArgs, | ||||
1982 | Base.getSourceRange().getBegin(), | ||||
1983 | DeclarationName()); | ||||
1984 | if (!BaseTypeLoc) { | ||||
1985 | Invalid = true; | ||||
1986 | continue; | ||||
1987 | } | ||||
1988 | |||||
1989 | if (CXXBaseSpecifier *InstantiatedBase | ||||
1990 | = CheckBaseSpecifier(Instantiation, | ||||
1991 | Base.getSourceRange(), | ||||
1992 | Base.isVirtual(), | ||||
1993 | Base.getAccessSpecifierAsWritten(), | ||||
1994 | BaseTypeLoc, | ||||
1995 | SourceLocation())) | ||||
1996 | InstantiatedBases.push_back(InstantiatedBase); | ||||
1997 | else | ||||
1998 | Invalid = true; | ||||
1999 | } | ||||
2000 | |||||
2001 | continue; | ||||
2002 | } | ||||
2003 | |||||
2004 | // The resulting base specifier will (still) be a pack expansion. | ||||
2005 | EllipsisLoc = Base.getEllipsisLoc(); | ||||
2006 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(*this, -1); | ||||
2007 | BaseTypeLoc = SubstType(Base.getTypeSourceInfo(), | ||||
2008 | TemplateArgs, | ||||
2009 | Base.getSourceRange().getBegin(), | ||||
2010 | DeclarationName()); | ||||
2011 | } else { | ||||
2012 | BaseTypeLoc = SubstType(Base.getTypeSourceInfo(), | ||||
2013 | TemplateArgs, | ||||
2014 | Base.getSourceRange().getBegin(), | ||||
2015 | DeclarationName()); | ||||
2016 | } | ||||
2017 | |||||
2018 | if (!BaseTypeLoc) { | ||||
2019 | Invalid = true; | ||||
2020 | continue; | ||||
2021 | } | ||||
2022 | |||||
2023 | if (CXXBaseSpecifier *InstantiatedBase | ||||
2024 | = CheckBaseSpecifier(Instantiation, | ||||
2025 | Base.getSourceRange(), | ||||
2026 | Base.isVirtual(), | ||||
2027 | Base.getAccessSpecifierAsWritten(), | ||||
2028 | BaseTypeLoc, | ||||
2029 | EllipsisLoc)) | ||||
2030 | InstantiatedBases.push_back(InstantiatedBase); | ||||
2031 | else | ||||
2032 | Invalid = true; | ||||
2033 | } | ||||
2034 | |||||
2035 | if (!Invalid && AttachBaseSpecifiers(Instantiation, InstantiatedBases)) | ||||
2036 | Invalid = true; | ||||
2037 | |||||
2038 | return Invalid; | ||||
2039 | } | ||||
2040 | |||||
2041 | // Defined via #include from SemaTemplateInstantiateDecl.cpp | ||||
2042 | namespace clang { | ||||
2043 | namespace sema { | ||||
2044 | Attr *instantiateTemplateAttribute(const Attr *At, ASTContext &C, Sema &S, | ||||
2045 | const MultiLevelTemplateArgumentList &TemplateArgs); | ||||
2046 | Attr *instantiateTemplateAttributeForDecl( | ||||
2047 | const Attr *At, ASTContext &C, Sema &S, | ||||
2048 | const MultiLevelTemplateArgumentList &TemplateArgs); | ||||
2049 | } | ||||
2050 | } | ||||
2051 | |||||
2052 | /// Instantiate the definition of a class from a given pattern. | ||||
2053 | /// | ||||
2054 | /// \param PointOfInstantiation The point of instantiation within the | ||||
2055 | /// source code. | ||||
2056 | /// | ||||
2057 | /// \param Instantiation is the declaration whose definition is being | ||||
2058 | /// instantiated. This will be either a class template specialization | ||||
2059 | /// or a member class of a class template specialization. | ||||
2060 | /// | ||||
2061 | /// \param Pattern is the pattern from which the instantiation | ||||
2062 | /// occurs. This will be either the declaration of a class template or | ||||
2063 | /// the declaration of a member class of a class template. | ||||
2064 | /// | ||||
2065 | /// \param TemplateArgs The template arguments to be substituted into | ||||
2066 | /// the pattern. | ||||
2067 | /// | ||||
2068 | /// \param TSK the kind of implicit or explicit instantiation to perform. | ||||
2069 | /// | ||||
2070 | /// \param Complain whether to complain if the class cannot be instantiated due | ||||
2071 | /// to the lack of a definition. | ||||
2072 | /// | ||||
2073 | /// \returns true if an error occurred, false otherwise. | ||||
2074 | bool | ||||
2075 | Sema::InstantiateClass(SourceLocation PointOfInstantiation, | ||||
2076 | CXXRecordDecl *Instantiation, CXXRecordDecl *Pattern, | ||||
2077 | const MultiLevelTemplateArgumentList &TemplateArgs, | ||||
2078 | TemplateSpecializationKind TSK, | ||||
2079 | bool Complain) { | ||||
2080 | CXXRecordDecl *PatternDef | ||||
2081 | = cast_or_null<CXXRecordDecl>(Pattern->getDefinition()); | ||||
2082 | if (DiagnoseUninstantiableTemplate(PointOfInstantiation, Instantiation, | ||||
2083 | Instantiation->getInstantiatedFromMemberClass(), | ||||
2084 | Pattern, PatternDef, TSK, Complain)) | ||||
2085 | return true; | ||||
2086 | |||||
2087 | llvm::TimeTraceScope TimeScope("InstantiateClass", [&]() { | ||||
2088 | std::string Name; | ||||
2089 | llvm::raw_string_ostream OS(Name); | ||||
2090 | Instantiation->getNameForDiagnostic(OS, getPrintingPolicy(), | ||||
2091 | /*Qualified=*/true); | ||||
2092 | return Name; | ||||
2093 | }); | ||||
2094 | |||||
2095 | Pattern = PatternDef; | ||||
2096 | |||||
2097 | // Record the point of instantiation. | ||||
2098 | if (MemberSpecializationInfo *MSInfo | ||||
2099 | = Instantiation->getMemberSpecializationInfo()) { | ||||
2100 | MSInfo->setTemplateSpecializationKind(TSK); | ||||
2101 | MSInfo->setPointOfInstantiation(PointOfInstantiation); | ||||
2102 | } else if (ClassTemplateSpecializationDecl *Spec
|
32.1 | 'Spec' is null |
60 | Called C++ object pointer is null |
1 | Assuming 'TSK' is not equal to TSK_ExplicitInstantiationDefinition |
5.1 | 'Function' is null |
5.1 | 'Function' is null |
7.1 | 'Var' is null |
7.1 | 'Var' is null |
9.1 | 'Record' is non-null |
9.1 | 'Record' is non-null |
1 | //===--- Sema.h - Semantic Analysis & AST Building --------------*- 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 Sema class, which performs semantic analysis and |
10 | // builds ASTs. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_CLANG_SEMA_SEMA_H |
15 | #define LLVM_CLANG_SEMA_SEMA_H |
16 | |
17 | #include "clang/AST/Attr.h" |
18 | #include "clang/AST/Availability.h" |
19 | #include "clang/AST/ComparisonCategories.h" |
20 | #include "clang/AST/DeclTemplate.h" |
21 | #include "clang/AST/DeclarationName.h" |
22 | #include "clang/AST/Expr.h" |
23 | #include "clang/AST/ExprCXX.h" |
24 | #include "clang/AST/ExprObjC.h" |
25 | #include "clang/AST/ExternalASTSource.h" |
26 | #include "clang/AST/LocInfoType.h" |
27 | #include "clang/AST/MangleNumberingContext.h" |
28 | #include "clang/AST/NSAPI.h" |
29 | #include "clang/AST/PrettyPrinter.h" |
30 | #include "clang/AST/StmtCXX.h" |
31 | #include "clang/AST/TypeLoc.h" |
32 | #include "clang/AST/TypeOrdering.h" |
33 | #include "clang/Basic/ExpressionTraits.h" |
34 | #include "clang/Basic/Module.h" |
35 | #include "clang/Basic/OpenMPKinds.h" |
36 | #include "clang/Basic/PragmaKinds.h" |
37 | #include "clang/Basic/Specifiers.h" |
38 | #include "clang/Basic/TemplateKinds.h" |
39 | #include "clang/Basic/TypeTraits.h" |
40 | #include "clang/Sema/AnalysisBasedWarnings.h" |
41 | #include "clang/Sema/CleanupInfo.h" |
42 | #include "clang/Sema/DeclSpec.h" |
43 | #include "clang/Sema/ExternalSemaSource.h" |
44 | #include "clang/Sema/IdentifierResolver.h" |
45 | #include "clang/Sema/ObjCMethodList.h" |
46 | #include "clang/Sema/Ownership.h" |
47 | #include "clang/Sema/Scope.h" |
48 | #include "clang/Sema/TypoCorrection.h" |
49 | #include "clang/Sema/Weak.h" |
50 | #include "llvm/ADT/ArrayRef.h" |
51 | #include "llvm/ADT/Optional.h" |
52 | #include "llvm/ADT/SetVector.h" |
53 | #include "llvm/ADT/SmallBitVector.h" |
54 | #include "llvm/ADT/SmallPtrSet.h" |
55 | #include "llvm/ADT/SmallVector.h" |
56 | #include "llvm/ADT/TinyPtrVector.h" |
57 | #include <deque> |
58 | #include <memory> |
59 | #include <string> |
60 | #include <tuple> |
61 | #include <vector> |
62 | |
63 | namespace llvm { |
64 | class APSInt; |
65 | template <typename ValueT> struct DenseMapInfo; |
66 | template <typename ValueT, typename ValueInfoT> class DenseSet; |
67 | class SmallBitVector; |
68 | struct InlineAsmIdentifierInfo; |
69 | } |
70 | |
71 | namespace clang { |
72 | class ADLResult; |
73 | class ASTConsumer; |
74 | class ASTContext; |
75 | class ASTMutationListener; |
76 | class ASTReader; |
77 | class ASTWriter; |
78 | class ArrayType; |
79 | class ParsedAttr; |
80 | class BindingDecl; |
81 | class BlockDecl; |
82 | class CapturedDecl; |
83 | class CXXBasePath; |
84 | class CXXBasePaths; |
85 | class CXXBindTemporaryExpr; |
86 | typedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; |
87 | class CXXConstructorDecl; |
88 | class CXXConversionDecl; |
89 | class CXXDeleteExpr; |
90 | class CXXDestructorDecl; |
91 | class CXXFieldCollector; |
92 | class CXXMemberCallExpr; |
93 | class CXXMethodDecl; |
94 | class CXXScopeSpec; |
95 | class CXXTemporary; |
96 | class CXXTryStmt; |
97 | class CallExpr; |
98 | class ClassTemplateDecl; |
99 | class ClassTemplatePartialSpecializationDecl; |
100 | class ClassTemplateSpecializationDecl; |
101 | class VarTemplatePartialSpecializationDecl; |
102 | class CodeCompleteConsumer; |
103 | class CodeCompletionAllocator; |
104 | class CodeCompletionTUInfo; |
105 | class CodeCompletionResult; |
106 | class CoroutineBodyStmt; |
107 | class Decl; |
108 | class DeclAccessPair; |
109 | class DeclContext; |
110 | class DeclRefExpr; |
111 | class DeclaratorDecl; |
112 | class DeducedTemplateArgument; |
113 | class DependentDiagnostic; |
114 | class DesignatedInitExpr; |
115 | class Designation; |
116 | class EnableIfAttr; |
117 | class EnumConstantDecl; |
118 | class Expr; |
119 | class ExtVectorType; |
120 | class FormatAttr; |
121 | class FriendDecl; |
122 | class FunctionDecl; |
123 | class FunctionProtoType; |
124 | class FunctionTemplateDecl; |
125 | class ImplicitConversionSequence; |
126 | typedef MutableArrayRef<ImplicitConversionSequence> ConversionSequenceList; |
127 | class InitListExpr; |
128 | class InitializationKind; |
129 | class InitializationSequence; |
130 | class InitializedEntity; |
131 | class IntegerLiteral; |
132 | class LabelStmt; |
133 | class LambdaExpr; |
134 | class LangOptions; |
135 | class LocalInstantiationScope; |
136 | class LookupResult; |
137 | class MacroInfo; |
138 | typedef ArrayRef<std::pair<IdentifierInfo *, SourceLocation>> ModuleIdPath; |
139 | class ModuleLoader; |
140 | class MultiLevelTemplateArgumentList; |
141 | class NamedDecl; |
142 | class ObjCCategoryDecl; |
143 | class ObjCCategoryImplDecl; |
144 | class ObjCCompatibleAliasDecl; |
145 | class ObjCContainerDecl; |
146 | class ObjCImplDecl; |
147 | class ObjCImplementationDecl; |
148 | class ObjCInterfaceDecl; |
149 | class ObjCIvarDecl; |
150 | template <class T> class ObjCList; |
151 | class ObjCMessageExpr; |
152 | class ObjCMethodDecl; |
153 | class ObjCPropertyDecl; |
154 | class ObjCProtocolDecl; |
155 | class OMPThreadPrivateDecl; |
156 | class OMPRequiresDecl; |
157 | class OMPDeclareReductionDecl; |
158 | class OMPDeclareSimdDecl; |
159 | class OMPClause; |
160 | struct OMPVarListLocTy; |
161 | struct OverloadCandidate; |
162 | enum class OverloadCandidateParamOrder : char; |
163 | enum OverloadCandidateRewriteKind : unsigned; |
164 | class OverloadCandidateSet; |
165 | class OverloadExpr; |
166 | class ParenListExpr; |
167 | class ParmVarDecl; |
168 | class Preprocessor; |
169 | class PseudoDestructorTypeStorage; |
170 | class PseudoObjectExpr; |
171 | class QualType; |
172 | class StandardConversionSequence; |
173 | class Stmt; |
174 | class StringLiteral; |
175 | class SwitchStmt; |
176 | class TemplateArgument; |
177 | class TemplateArgumentList; |
178 | class TemplateArgumentLoc; |
179 | class TemplateDecl; |
180 | class TemplateInstantiationCallback; |
181 | class TemplateParameterList; |
182 | class TemplatePartialOrderingContext; |
183 | class TemplateTemplateParmDecl; |
184 | class Token; |
185 | class TypeAliasDecl; |
186 | class TypedefDecl; |
187 | class TypedefNameDecl; |
188 | class TypeLoc; |
189 | class TypoCorrectionConsumer; |
190 | class UnqualifiedId; |
191 | class UnresolvedLookupExpr; |
192 | class UnresolvedMemberExpr; |
193 | class UnresolvedSetImpl; |
194 | class UnresolvedSetIterator; |
195 | class UsingDecl; |
196 | class UsingShadowDecl; |
197 | class ValueDecl; |
198 | class VarDecl; |
199 | class VarTemplateSpecializationDecl; |
200 | class VisibilityAttr; |
201 | class VisibleDeclConsumer; |
202 | class IndirectFieldDecl; |
203 | struct DeductionFailureInfo; |
204 | class TemplateSpecCandidateSet; |
205 | |
206 | namespace sema { |
207 | class AccessedEntity; |
208 | class BlockScopeInfo; |
209 | class Capture; |
210 | class CapturedRegionScopeInfo; |
211 | class CapturingScopeInfo; |
212 | class CompoundScopeInfo; |
213 | class DelayedDiagnostic; |
214 | class DelayedDiagnosticPool; |
215 | class FunctionScopeInfo; |
216 | class LambdaScopeInfo; |
217 | class PossiblyUnreachableDiag; |
218 | class SemaPPCallbacks; |
219 | class TemplateDeductionInfo; |
220 | } |
221 | |
222 | namespace threadSafety { |
223 | class BeforeSet; |
224 | void threadSafetyCleanup(BeforeSet* Cache); |
225 | } |
226 | |
227 | // FIXME: No way to easily map from TemplateTypeParmTypes to |
228 | // TemplateTypeParmDecls, so we have this horrible PointerUnion. |
229 | typedef std::pair<llvm::PointerUnion<const TemplateTypeParmType*, NamedDecl*>, |
230 | SourceLocation> UnexpandedParameterPack; |
231 | |
232 | /// Describes whether we've seen any nullability information for the given |
233 | /// file. |
234 | struct FileNullability { |
235 | /// The first pointer declarator (of any pointer kind) in the file that does |
236 | /// not have a corresponding nullability annotation. |
237 | SourceLocation PointerLoc; |
238 | |
239 | /// The end location for the first pointer declarator in the file. Used for |
240 | /// placing fix-its. |
241 | SourceLocation PointerEndLoc; |
242 | |
243 | /// Which kind of pointer declarator we saw. |
244 | uint8_t PointerKind; |
245 | |
246 | /// Whether we saw any type nullability annotations in the given file. |
247 | bool SawTypeNullability = false; |
248 | }; |
249 | |
250 | /// A mapping from file IDs to a record of whether we've seen nullability |
251 | /// information in that file. |
252 | class FileNullabilityMap { |
253 | /// A mapping from file IDs to the nullability information for each file ID. |
254 | llvm::DenseMap<FileID, FileNullability> Map; |
255 | |
256 | /// A single-element cache based on the file ID. |
257 | struct { |
258 | FileID File; |
259 | FileNullability Nullability; |
260 | } Cache; |
261 | |
262 | public: |
263 | FileNullability &operator[](FileID file) { |
264 | // Check the single-element cache. |
265 | if (file == Cache.File) |
266 | return Cache.Nullability; |
267 | |
268 | // It's not in the single-element cache; flush the cache if we have one. |
269 | if (!Cache.File.isInvalid()) { |
270 | Map[Cache.File] = Cache.Nullability; |
271 | } |
272 | |
273 | // Pull this entry into the cache. |
274 | Cache.File = file; |
275 | Cache.Nullability = Map[file]; |
276 | return Cache.Nullability; |
277 | } |
278 | }; |
279 | |
280 | /// Keeps track of expected type during expression parsing. The type is tied to |
281 | /// a particular token, all functions that update or consume the type take a |
282 | /// start location of the token they are looking at as a parameter. This allows |
283 | /// to avoid updating the type on hot paths in the parser. |
284 | class PreferredTypeBuilder { |
285 | public: |
286 | PreferredTypeBuilder() = default; |
287 | explicit PreferredTypeBuilder(QualType Type) : Type(Type) {} |
288 | |
289 | void enterCondition(Sema &S, SourceLocation Tok); |
290 | void enterReturn(Sema &S, SourceLocation Tok); |
291 | void enterVariableInit(SourceLocation Tok, Decl *D); |
292 | /// Computing a type for the function argument may require running |
293 | /// overloading, so we postpone its computation until it is actually needed. |
294 | /// |
295 | /// Clients should be very careful when using this funciton, as it stores a |
296 | /// function_ref, clients should make sure all calls to get() with the same |
297 | /// location happen while function_ref is alive. |
298 | void enterFunctionArgument(SourceLocation Tok, |
299 | llvm::function_ref<QualType()> ComputeType); |
300 | |
301 | void enterParenExpr(SourceLocation Tok, SourceLocation LParLoc); |
302 | void enterUnary(Sema &S, SourceLocation Tok, tok::TokenKind OpKind, |
303 | SourceLocation OpLoc); |
304 | void enterBinary(Sema &S, SourceLocation Tok, Expr *LHS, tok::TokenKind Op); |
305 | void enterMemAccess(Sema &S, SourceLocation Tok, Expr *Base); |
306 | void enterSubscript(Sema &S, SourceLocation Tok, Expr *LHS); |
307 | /// Handles all type casts, including C-style cast, C++ casts, etc. |
308 | void enterTypeCast(SourceLocation Tok, QualType CastType); |
309 | |
310 | QualType get(SourceLocation Tok) const { |
311 | if (Tok != ExpectedLoc) |
312 | return QualType(); |
313 | if (!Type.isNull()) |
314 | return Type; |
315 | if (ComputeType) |
316 | return ComputeType(); |
317 | return QualType(); |
318 | } |
319 | |
320 | private: |
321 | /// Start position of a token for which we store expected type. |
322 | SourceLocation ExpectedLoc; |
323 | /// Expected type for a token starting at ExpectedLoc. |
324 | QualType Type; |
325 | /// A function to compute expected type at ExpectedLoc. It is only considered |
326 | /// if Type is null. |
327 | llvm::function_ref<QualType()> ComputeType; |
328 | }; |
329 | |
330 | /// Sema - This implements semantic analysis and AST building for C. |
331 | class Sema { |
332 | Sema(const Sema &) = delete; |
333 | void operator=(const Sema &) = delete; |
334 | |
335 | ///Source of additional semantic information. |
336 | ExternalSemaSource *ExternalSource; |
337 | |
338 | ///Whether Sema has generated a multiplexer and has to delete it. |
339 | bool isMultiplexExternalSource; |
340 | |
341 | static bool mightHaveNonExternalLinkage(const DeclaratorDecl *FD); |
342 | |
343 | bool isVisibleSlow(const NamedDecl *D); |
344 | |
345 | /// Determine whether two declarations should be linked together, given that |
346 | /// the old declaration might not be visible and the new declaration might |
347 | /// not have external linkage. |
348 | bool shouldLinkPossiblyHiddenDecl(const NamedDecl *Old, |
349 | const NamedDecl *New) { |
350 | if (isVisible(Old)) |
351 | return true; |
352 | // See comment in below overload for why it's safe to compute the linkage |
353 | // of the new declaration here. |
354 | if (New->isExternallyDeclarable()) { |
355 | assert(Old->isExternallyDeclarable() &&((Old->isExternallyDeclarable() && "should not have found a non-externally-declarable previous decl" ) ? static_cast<void> (0) : __assert_fail ("Old->isExternallyDeclarable() && \"should not have found a non-externally-declarable previous decl\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 356, __PRETTY_FUNCTION__)) |
356 | "should not have found a non-externally-declarable previous decl")((Old->isExternallyDeclarable() && "should not have found a non-externally-declarable previous decl" ) ? static_cast<void> (0) : __assert_fail ("Old->isExternallyDeclarable() && \"should not have found a non-externally-declarable previous decl\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 356, __PRETTY_FUNCTION__)); |
357 | return true; |
358 | } |
359 | return false; |
360 | } |
361 | bool shouldLinkPossiblyHiddenDecl(LookupResult &Old, const NamedDecl *New); |
362 | |
363 | void setupImplicitSpecialMemberType(CXXMethodDecl *SpecialMem, |
364 | QualType ResultTy, |
365 | ArrayRef<QualType> Args); |
366 | |
367 | public: |
368 | typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy; |
369 | typedef OpaquePtr<TemplateName> TemplateTy; |
370 | typedef OpaquePtr<QualType> TypeTy; |
371 | |
372 | OpenCLOptions OpenCLFeatures; |
373 | FPOptions FPFeatures; |
374 | |
375 | const LangOptions &LangOpts; |
376 | Preprocessor &PP; |
377 | ASTContext &Context; |
378 | ASTConsumer &Consumer; |
379 | DiagnosticsEngine &Diags; |
380 | SourceManager &SourceMgr; |
381 | |
382 | /// Flag indicating whether or not to collect detailed statistics. |
383 | bool CollectStats; |
384 | |
385 | /// Code-completion consumer. |
386 | CodeCompleteConsumer *CodeCompleter; |
387 | |
388 | /// CurContext - This is the current declaration context of parsing. |
389 | DeclContext *CurContext; |
390 | |
391 | /// Generally null except when we temporarily switch decl contexts, |
392 | /// like in \see ActOnObjCTemporaryExitContainerContext. |
393 | DeclContext *OriginalLexicalContext; |
394 | |
395 | /// VAListTagName - The declaration name corresponding to __va_list_tag. |
396 | /// This is used as part of a hack to omit that class from ADL results. |
397 | DeclarationName VAListTagName; |
398 | |
399 | bool MSStructPragmaOn; // True when \#pragma ms_struct on |
400 | |
401 | /// Controls member pointer representation format under the MS ABI. |
402 | LangOptions::PragmaMSPointersToMembersKind |
403 | MSPointerToMemberRepresentationMethod; |
404 | |
405 | /// Stack of active SEH __finally scopes. Can be empty. |
406 | SmallVector<Scope*, 2> CurrentSEHFinally; |
407 | |
408 | /// Source location for newly created implicit MSInheritanceAttrs |
409 | SourceLocation ImplicitMSInheritanceAttrLoc; |
410 | |
411 | /// Holds TypoExprs that are created from `createDelayedTypo`. This is used by |
412 | /// `TransformTypos` in order to keep track of any TypoExprs that are created |
413 | /// recursively during typo correction and wipe them away if the correction |
414 | /// fails. |
415 | llvm::SmallVector<TypoExpr *, 2> TypoExprs; |
416 | |
417 | /// pragma clang section kind |
418 | enum PragmaClangSectionKind { |
419 | PCSK_Invalid = 0, |
420 | PCSK_BSS = 1, |
421 | PCSK_Data = 2, |
422 | PCSK_Rodata = 3, |
423 | PCSK_Text = 4, |
424 | PCSK_Relro = 5 |
425 | }; |
426 | |
427 | enum PragmaClangSectionAction { |
428 | PCSA_Set = 0, |
429 | PCSA_Clear = 1 |
430 | }; |
431 | |
432 | struct PragmaClangSection { |
433 | std::string SectionName; |
434 | bool Valid = false; |
435 | SourceLocation PragmaLocation; |
436 | |
437 | void Act(SourceLocation PragmaLocation, |
438 | PragmaClangSectionAction Action, |
439 | StringLiteral* Name); |
440 | }; |
441 | |
442 | PragmaClangSection PragmaClangBSSSection; |
443 | PragmaClangSection PragmaClangDataSection; |
444 | PragmaClangSection PragmaClangRodataSection; |
445 | PragmaClangSection PragmaClangRelroSection; |
446 | PragmaClangSection PragmaClangTextSection; |
447 | |
448 | enum PragmaMsStackAction { |
449 | PSK_Reset = 0x0, // #pragma () |
450 | PSK_Set = 0x1, // #pragma (value) |
451 | PSK_Push = 0x2, // #pragma (push[, id]) |
452 | PSK_Pop = 0x4, // #pragma (pop[, id]) |
453 | PSK_Show = 0x8, // #pragma (show) -- only for "pack"! |
454 | PSK_Push_Set = PSK_Push | PSK_Set, // #pragma (push[, id], value) |
455 | PSK_Pop_Set = PSK_Pop | PSK_Set, // #pragma (pop[, id], value) |
456 | }; |
457 | |
458 | template<typename ValueType> |
459 | struct PragmaStack { |
460 | struct Slot { |
461 | llvm::StringRef StackSlotLabel; |
462 | ValueType Value; |
463 | SourceLocation PragmaLocation; |
464 | SourceLocation PragmaPushLocation; |
465 | Slot(llvm::StringRef StackSlotLabel, ValueType Value, |
466 | SourceLocation PragmaLocation, SourceLocation PragmaPushLocation) |
467 | : StackSlotLabel(StackSlotLabel), Value(Value), |
468 | PragmaLocation(PragmaLocation), |
469 | PragmaPushLocation(PragmaPushLocation) {} |
470 | }; |
471 | void Act(SourceLocation PragmaLocation, |
472 | PragmaMsStackAction Action, |
473 | llvm::StringRef StackSlotLabel, |
474 | ValueType Value); |
475 | |
476 | // MSVC seems to add artificial slots to #pragma stacks on entering a C++ |
477 | // method body to restore the stacks on exit, so it works like this: |
478 | // |
479 | // struct S { |
480 | // #pragma <name>(push, InternalPragmaSlot, <current_pragma_value>) |
481 | // void Method {} |
482 | // #pragma <name>(pop, InternalPragmaSlot) |
483 | // }; |
484 | // |
485 | // It works even with #pragma vtordisp, although MSVC doesn't support |
486 | // #pragma vtordisp(push [, id], n) |
487 | // syntax. |
488 | // |
489 | // Push / pop a named sentinel slot. |
490 | void SentinelAction(PragmaMsStackAction Action, StringRef Label) { |
491 | assert((Action == PSK_Push || Action == PSK_Pop) &&(((Action == PSK_Push || Action == PSK_Pop) && "Can only push / pop #pragma stack sentinels!" ) ? static_cast<void> (0) : __assert_fail ("(Action == PSK_Push || Action == PSK_Pop) && \"Can only push / pop #pragma stack sentinels!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 492, __PRETTY_FUNCTION__)) |
492 | "Can only push / pop #pragma stack sentinels!")(((Action == PSK_Push || Action == PSK_Pop) && "Can only push / pop #pragma stack sentinels!" ) ? static_cast<void> (0) : __assert_fail ("(Action == PSK_Push || Action == PSK_Pop) && \"Can only push / pop #pragma stack sentinels!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 492, __PRETTY_FUNCTION__)); |
493 | Act(CurrentPragmaLocation, Action, Label, CurrentValue); |
494 | } |
495 | |
496 | // Constructors. |
497 | explicit PragmaStack(const ValueType &Default) |
498 | : DefaultValue(Default), CurrentValue(Default) {} |
499 | |
500 | bool hasValue() const { return CurrentValue != DefaultValue; } |
501 | |
502 | SmallVector<Slot, 2> Stack; |
503 | ValueType DefaultValue; // Value used for PSK_Reset action. |
504 | ValueType CurrentValue; |
505 | SourceLocation CurrentPragmaLocation; |
506 | }; |
507 | // FIXME: We should serialize / deserialize these if they occur in a PCH (but |
508 | // we shouldn't do so if they're in a module). |
509 | |
510 | /// Whether to insert vtordisps prior to virtual bases in the Microsoft |
511 | /// C++ ABI. Possible values are 0, 1, and 2, which mean: |
512 | /// |
513 | /// 0: Suppress all vtordisps |
514 | /// 1: Insert vtordisps in the presence of vbase overrides and non-trivial |
515 | /// structors |
516 | /// 2: Always insert vtordisps to support RTTI on partially constructed |
517 | /// objects |
518 | PragmaStack<MSVtorDispAttr::Mode> VtorDispStack; |
519 | // #pragma pack. |
520 | // Sentinel to represent when the stack is set to mac68k alignment. |
521 | static const unsigned kMac68kAlignmentSentinel = ~0U; |
522 | PragmaStack<unsigned> PackStack; |
523 | // The current #pragma pack values and locations at each #include. |
524 | struct PackIncludeState { |
525 | unsigned CurrentValue; |
526 | SourceLocation CurrentPragmaLocation; |
527 | bool HasNonDefaultValue, ShouldWarnOnInclude; |
528 | }; |
529 | SmallVector<PackIncludeState, 8> PackIncludeStack; |
530 | // Segment #pragmas. |
531 | PragmaStack<StringLiteral *> DataSegStack; |
532 | PragmaStack<StringLiteral *> BSSSegStack; |
533 | PragmaStack<StringLiteral *> ConstSegStack; |
534 | PragmaStack<StringLiteral *> CodeSegStack; |
535 | |
536 | // RAII object to push / pop sentinel slots for all MS #pragma stacks. |
537 | // Actions should be performed only if we enter / exit a C++ method body. |
538 | class PragmaStackSentinelRAII { |
539 | public: |
540 | PragmaStackSentinelRAII(Sema &S, StringRef SlotLabel, bool ShouldAct); |
541 | ~PragmaStackSentinelRAII(); |
542 | |
543 | private: |
544 | Sema &S; |
545 | StringRef SlotLabel; |
546 | bool ShouldAct; |
547 | }; |
548 | |
549 | /// A mapping that describes the nullability we've seen in each header file. |
550 | FileNullabilityMap NullabilityMap; |
551 | |
552 | /// Last section used with #pragma init_seg. |
553 | StringLiteral *CurInitSeg; |
554 | SourceLocation CurInitSegLoc; |
555 | |
556 | /// VisContext - Manages the stack for \#pragma GCC visibility. |
557 | void *VisContext; // Really a "PragmaVisStack*" |
558 | |
559 | /// This an attribute introduced by \#pragma clang attribute. |
560 | struct PragmaAttributeEntry { |
561 | SourceLocation Loc; |
562 | ParsedAttr *Attribute; |
563 | SmallVector<attr::SubjectMatchRule, 4> MatchRules; |
564 | bool IsUsed; |
565 | }; |
566 | |
567 | /// A push'd group of PragmaAttributeEntries. |
568 | struct PragmaAttributeGroup { |
569 | /// The location of the push attribute. |
570 | SourceLocation Loc; |
571 | /// The namespace of this push group. |
572 | const IdentifierInfo *Namespace; |
573 | SmallVector<PragmaAttributeEntry, 2> Entries; |
574 | }; |
575 | |
576 | SmallVector<PragmaAttributeGroup, 2> PragmaAttributeStack; |
577 | |
578 | /// The declaration that is currently receiving an attribute from the |
579 | /// #pragma attribute stack. |
580 | const Decl *PragmaAttributeCurrentTargetDecl; |
581 | |
582 | /// This represents the last location of a "#pragma clang optimize off" |
583 | /// directive if such a directive has not been closed by an "on" yet. If |
584 | /// optimizations are currently "on", this is set to an invalid location. |
585 | SourceLocation OptimizeOffPragmaLocation; |
586 | |
587 | /// Flag indicating if Sema is building a recovery call expression. |
588 | /// |
589 | /// This flag is used to avoid building recovery call expressions |
590 | /// if Sema is already doing so, which would cause infinite recursions. |
591 | bool IsBuildingRecoveryCallExpr; |
592 | |
593 | /// Used to control the generation of ExprWithCleanups. |
594 | CleanupInfo Cleanup; |
595 | |
596 | /// ExprCleanupObjects - This is the stack of objects requiring |
597 | /// cleanup that are created by the current full expression. The |
598 | /// element type here is ExprWithCleanups::Object. |
599 | SmallVector<BlockDecl*, 8> ExprCleanupObjects; |
600 | |
601 | /// Store a set of either DeclRefExprs or MemberExprs that contain a reference |
602 | /// to a variable (constant) that may or may not be odr-used in this Expr, and |
603 | /// we won't know until all lvalue-to-rvalue and discarded value conversions |
604 | /// have been applied to all subexpressions of the enclosing full expression. |
605 | /// This is cleared at the end of each full expression. |
606 | using MaybeODRUseExprSet = llvm::SmallPtrSet<Expr *, 2>; |
607 | MaybeODRUseExprSet MaybeODRUseExprs; |
608 | |
609 | std::unique_ptr<sema::FunctionScopeInfo> CachedFunctionScope; |
610 | |
611 | /// Stack containing information about each of the nested |
612 | /// function, block, and method scopes that are currently active. |
613 | SmallVector<sema::FunctionScopeInfo *, 4> FunctionScopes; |
614 | |
615 | typedef LazyVector<TypedefNameDecl *, ExternalSemaSource, |
616 | &ExternalSemaSource::ReadExtVectorDecls, 2, 2> |
617 | ExtVectorDeclsType; |
618 | |
619 | /// ExtVectorDecls - This is a list all the extended vector types. This allows |
620 | /// us to associate a raw vector type with one of the ext_vector type names. |
621 | /// This is only necessary for issuing pretty diagnostics. |
622 | ExtVectorDeclsType ExtVectorDecls; |
623 | |
624 | /// FieldCollector - Collects CXXFieldDecls during parsing of C++ classes. |
625 | std::unique_ptr<CXXFieldCollector> FieldCollector; |
626 | |
627 | typedef llvm::SmallSetVector<NamedDecl *, 16> NamedDeclSetType; |
628 | |
629 | /// Set containing all declared private fields that are not used. |
630 | NamedDeclSetType UnusedPrivateFields; |
631 | |
632 | /// Set containing all typedefs that are likely unused. |
633 | llvm::SmallSetVector<const TypedefNameDecl *, 4> |
634 | UnusedLocalTypedefNameCandidates; |
635 | |
636 | /// Delete-expressions to be analyzed at the end of translation unit |
637 | /// |
638 | /// This list contains class members, and locations of delete-expressions |
639 | /// that could not be proven as to whether they mismatch with new-expression |
640 | /// used in initializer of the field. |
641 | typedef std::pair<SourceLocation, bool> DeleteExprLoc; |
642 | typedef llvm::SmallVector<DeleteExprLoc, 4> DeleteLocs; |
643 | llvm::MapVector<FieldDecl *, DeleteLocs> DeleteExprs; |
644 | |
645 | typedef llvm::SmallPtrSet<const CXXRecordDecl*, 8> RecordDeclSetTy; |
646 | |
647 | /// PureVirtualClassDiagSet - a set of class declarations which we have |
648 | /// emitted a list of pure virtual functions. Used to prevent emitting the |
649 | /// same list more than once. |
650 | std::unique_ptr<RecordDeclSetTy> PureVirtualClassDiagSet; |
651 | |
652 | /// ParsingInitForAutoVars - a set of declarations with auto types for which |
653 | /// we are currently parsing the initializer. |
654 | llvm::SmallPtrSet<const Decl*, 4> ParsingInitForAutoVars; |
655 | |
656 | /// Look for a locally scoped extern "C" declaration by the given name. |
657 | NamedDecl *findLocallyScopedExternCDecl(DeclarationName Name); |
658 | |
659 | typedef LazyVector<VarDecl *, ExternalSemaSource, |
660 | &ExternalSemaSource::ReadTentativeDefinitions, 2, 2> |
661 | TentativeDefinitionsType; |
662 | |
663 | /// All the tentative definitions encountered in the TU. |
664 | TentativeDefinitionsType TentativeDefinitions; |
665 | |
666 | typedef LazyVector<const DeclaratorDecl *, ExternalSemaSource, |
667 | &ExternalSemaSource::ReadUnusedFileScopedDecls, 2, 2> |
668 | UnusedFileScopedDeclsType; |
669 | |
670 | /// The set of file scoped decls seen so far that have not been used |
671 | /// and must warn if not used. Only contains the first declaration. |
672 | UnusedFileScopedDeclsType UnusedFileScopedDecls; |
673 | |
674 | typedef LazyVector<CXXConstructorDecl *, ExternalSemaSource, |
675 | &ExternalSemaSource::ReadDelegatingConstructors, 2, 2> |
676 | DelegatingCtorDeclsType; |
677 | |
678 | /// All the delegating constructors seen so far in the file, used for |
679 | /// cycle detection at the end of the TU. |
680 | DelegatingCtorDeclsType DelegatingCtorDecls; |
681 | |
682 | /// All the overriding functions seen during a class definition |
683 | /// that had their exception spec checks delayed, plus the overridden |
684 | /// function. |
685 | SmallVector<std::pair<const CXXMethodDecl*, const CXXMethodDecl*>, 2> |
686 | DelayedOverridingExceptionSpecChecks; |
687 | |
688 | /// All the function redeclarations seen during a class definition that had |
689 | /// their exception spec checks delayed, plus the prior declaration they |
690 | /// should be checked against. Except during error recovery, the new decl |
691 | /// should always be a friend declaration, as that's the only valid way to |
692 | /// redeclare a special member before its class is complete. |
693 | SmallVector<std::pair<FunctionDecl*, FunctionDecl*>, 2> |
694 | DelayedEquivalentExceptionSpecChecks; |
695 | |
696 | typedef llvm::MapVector<const FunctionDecl *, |
697 | std::unique_ptr<LateParsedTemplate>> |
698 | LateParsedTemplateMapT; |
699 | LateParsedTemplateMapT LateParsedTemplateMap; |
700 | |
701 | /// Callback to the parser to parse templated functions when needed. |
702 | typedef void LateTemplateParserCB(void *P, LateParsedTemplate &LPT); |
703 | typedef void LateTemplateParserCleanupCB(void *P); |
704 | LateTemplateParserCB *LateTemplateParser; |
705 | LateTemplateParserCleanupCB *LateTemplateParserCleanup; |
706 | void *OpaqueParser; |
707 | |
708 | void SetLateTemplateParser(LateTemplateParserCB *LTP, |
709 | LateTemplateParserCleanupCB *LTPCleanup, |
710 | void *P) { |
711 | LateTemplateParser = LTP; |
712 | LateTemplateParserCleanup = LTPCleanup; |
713 | OpaqueParser = P; |
714 | } |
715 | |
716 | class DelayedDiagnostics; |
717 | |
718 | class DelayedDiagnosticsState { |
719 | sema::DelayedDiagnosticPool *SavedPool; |
720 | friend class Sema::DelayedDiagnostics; |
721 | }; |
722 | typedef DelayedDiagnosticsState ParsingDeclState; |
723 | typedef DelayedDiagnosticsState ProcessingContextState; |
724 | |
725 | /// A class which encapsulates the logic for delaying diagnostics |
726 | /// during parsing and other processing. |
727 | class DelayedDiagnostics { |
728 | /// The current pool of diagnostics into which delayed |
729 | /// diagnostics should go. |
730 | sema::DelayedDiagnosticPool *CurPool; |
731 | |
732 | public: |
733 | DelayedDiagnostics() : CurPool(nullptr) {} |
734 | |
735 | /// Adds a delayed diagnostic. |
736 | void add(const sema::DelayedDiagnostic &diag); // in DelayedDiagnostic.h |
737 | |
738 | /// Determines whether diagnostics should be delayed. |
739 | bool shouldDelayDiagnostics() { return CurPool != nullptr; } |
740 | |
741 | /// Returns the current delayed-diagnostics pool. |
742 | sema::DelayedDiagnosticPool *getCurrentPool() const { |
743 | return CurPool; |
744 | } |
745 | |
746 | /// Enter a new scope. Access and deprecation diagnostics will be |
747 | /// collected in this pool. |
748 | DelayedDiagnosticsState push(sema::DelayedDiagnosticPool &pool) { |
749 | DelayedDiagnosticsState state; |
750 | state.SavedPool = CurPool; |
751 | CurPool = &pool; |
752 | return state; |
753 | } |
754 | |
755 | /// Leave a delayed-diagnostic state that was previously pushed. |
756 | /// Do not emit any of the diagnostics. This is performed as part |
757 | /// of the bookkeeping of popping a pool "properly". |
758 | void popWithoutEmitting(DelayedDiagnosticsState state) { |
759 | CurPool = state.SavedPool; |
760 | } |
761 | |
762 | /// Enter a new scope where access and deprecation diagnostics are |
763 | /// not delayed. |
764 | DelayedDiagnosticsState pushUndelayed() { |
765 | DelayedDiagnosticsState state; |
766 | state.SavedPool = CurPool; |
767 | CurPool = nullptr; |
768 | return state; |
769 | } |
770 | |
771 | /// Undo a previous pushUndelayed(). |
772 | void popUndelayed(DelayedDiagnosticsState state) { |
773 | assert(CurPool == nullptr)((CurPool == nullptr) ? static_cast<void> (0) : __assert_fail ("CurPool == nullptr", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 773, __PRETTY_FUNCTION__)); |
774 | CurPool = state.SavedPool; |
775 | } |
776 | } DelayedDiagnostics; |
777 | |
778 | /// A RAII object to temporarily push a declaration context. |
779 | class ContextRAII { |
780 | private: |
781 | Sema &S; |
782 | DeclContext *SavedContext; |
783 | ProcessingContextState SavedContextState; |
784 | QualType SavedCXXThisTypeOverride; |
785 | |
786 | public: |
787 | ContextRAII(Sema &S, DeclContext *ContextToPush, bool NewThisContext = true) |
788 | : S(S), SavedContext(S.CurContext), |
789 | SavedContextState(S.DelayedDiagnostics.pushUndelayed()), |
790 | SavedCXXThisTypeOverride(S.CXXThisTypeOverride) |
791 | { |
792 | assert(ContextToPush && "pushing null context")((ContextToPush && "pushing null context") ? static_cast <void> (0) : __assert_fail ("ContextToPush && \"pushing null context\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 792, __PRETTY_FUNCTION__)); |
793 | S.CurContext = ContextToPush; |
794 | if (NewThisContext) |
795 | S.CXXThisTypeOverride = QualType(); |
796 | } |
797 | |
798 | void pop() { |
799 | if (!SavedContext) return; |
800 | S.CurContext = SavedContext; |
801 | S.DelayedDiagnostics.popUndelayed(SavedContextState); |
802 | S.CXXThisTypeOverride = SavedCXXThisTypeOverride; |
803 | SavedContext = nullptr; |
804 | } |
805 | |
806 | ~ContextRAII() { |
807 | pop(); |
808 | } |
809 | }; |
810 | |
811 | /// Used to change context to isConstantEvaluated without pushing a heavy |
812 | /// ExpressionEvaluationContextRecord object. |
813 | bool isConstantEvaluatedOverride; |
814 | |
815 | bool isConstantEvaluated() { |
816 | return ExprEvalContexts.back().isConstantEvaluated() || |
817 | isConstantEvaluatedOverride; |
818 | } |
819 | |
820 | /// RAII object to handle the state changes required to synthesize |
821 | /// a function body. |
822 | class SynthesizedFunctionScope { |
823 | Sema &S; |
824 | Sema::ContextRAII SavedContext; |
825 | bool PushedCodeSynthesisContext = false; |
826 | |
827 | public: |
828 | SynthesizedFunctionScope(Sema &S, DeclContext *DC) |
829 | : S(S), SavedContext(S, DC) { |
830 | S.PushFunctionScope(); |
831 | S.PushExpressionEvaluationContext( |
832 | Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
833 | if (auto *FD = dyn_cast<FunctionDecl>(DC)) |
834 | FD->setWillHaveBody(true); |
835 | else |
836 | assert(isa<ObjCMethodDecl>(DC))((isa<ObjCMethodDecl>(DC)) ? static_cast<void> (0 ) : __assert_fail ("isa<ObjCMethodDecl>(DC)", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 836, __PRETTY_FUNCTION__)); |
837 | } |
838 | |
839 | void addContextNote(SourceLocation UseLoc) { |
840 | assert(!PushedCodeSynthesisContext)((!PushedCodeSynthesisContext) ? static_cast<void> (0) : __assert_fail ("!PushedCodeSynthesisContext", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 840, __PRETTY_FUNCTION__)); |
841 | |
842 | Sema::CodeSynthesisContext Ctx; |
843 | Ctx.Kind = Sema::CodeSynthesisContext::DefiningSynthesizedFunction; |
844 | Ctx.PointOfInstantiation = UseLoc; |
845 | Ctx.Entity = cast<Decl>(S.CurContext); |
846 | S.pushCodeSynthesisContext(Ctx); |
847 | |
848 | PushedCodeSynthesisContext = true; |
849 | } |
850 | |
851 | ~SynthesizedFunctionScope() { |
852 | if (PushedCodeSynthesisContext) |
853 | S.popCodeSynthesisContext(); |
854 | if (auto *FD = dyn_cast<FunctionDecl>(S.CurContext)) |
855 | FD->setWillHaveBody(false); |
856 | S.PopExpressionEvaluationContext(); |
857 | S.PopFunctionScopeInfo(); |
858 | } |
859 | }; |
860 | |
861 | /// WeakUndeclaredIdentifiers - Identifiers contained in |
862 | /// \#pragma weak before declared. rare. may alias another |
863 | /// identifier, declared or undeclared |
864 | llvm::MapVector<IdentifierInfo *, WeakInfo> WeakUndeclaredIdentifiers; |
865 | |
866 | /// ExtnameUndeclaredIdentifiers - Identifiers contained in |
867 | /// \#pragma redefine_extname before declared. Used in Solaris system headers |
868 | /// to define functions that occur in multiple standards to call the version |
869 | /// in the currently selected standard. |
870 | llvm::DenseMap<IdentifierInfo*,AsmLabelAttr*> ExtnameUndeclaredIdentifiers; |
871 | |
872 | |
873 | /// Load weak undeclared identifiers from the external source. |
874 | void LoadExternalWeakUndeclaredIdentifiers(); |
875 | |
876 | /// WeakTopLevelDecl - Translation-unit scoped declarations generated by |
877 | /// \#pragma weak during processing of other Decls. |
878 | /// I couldn't figure out a clean way to generate these in-line, so |
879 | /// we store them here and handle separately -- which is a hack. |
880 | /// It would be best to refactor this. |
881 | SmallVector<Decl*,2> WeakTopLevelDecl; |
882 | |
883 | IdentifierResolver IdResolver; |
884 | |
885 | /// Translation Unit Scope - useful to Objective-C actions that need |
886 | /// to lookup file scope declarations in the "ordinary" C decl namespace. |
887 | /// For example, user-defined classes, built-in "id" type, etc. |
888 | Scope *TUScope; |
889 | |
890 | /// The C++ "std" namespace, where the standard library resides. |
891 | LazyDeclPtr StdNamespace; |
892 | |
893 | /// The C++ "std::bad_alloc" class, which is defined by the C++ |
894 | /// standard library. |
895 | LazyDeclPtr StdBadAlloc; |
896 | |
897 | /// The C++ "std::align_val_t" enum class, which is defined by the C++ |
898 | /// standard library. |
899 | LazyDeclPtr StdAlignValT; |
900 | |
901 | /// The C++ "std::experimental" namespace, where the experimental parts |
902 | /// of the standard library resides. |
903 | NamespaceDecl *StdExperimentalNamespaceCache; |
904 | |
905 | /// The C++ "std::initializer_list" template, which is defined in |
906 | /// \<initializer_list>. |
907 | ClassTemplateDecl *StdInitializerList; |
908 | |
909 | /// The C++ "std::coroutine_traits" template, which is defined in |
910 | /// \<coroutine_traits> |
911 | ClassTemplateDecl *StdCoroutineTraitsCache; |
912 | |
913 | /// The C++ "type_info" declaration, which is defined in \<typeinfo>. |
914 | RecordDecl *CXXTypeInfoDecl; |
915 | |
916 | /// The MSVC "_GUID" struct, which is defined in MSVC header files. |
917 | RecordDecl *MSVCGuidDecl; |
918 | |
919 | /// Caches identifiers/selectors for NSFoundation APIs. |
920 | std::unique_ptr<NSAPI> NSAPIObj; |
921 | |
922 | /// The declaration of the Objective-C NSNumber class. |
923 | ObjCInterfaceDecl *NSNumberDecl; |
924 | |
925 | /// The declaration of the Objective-C NSValue class. |
926 | ObjCInterfaceDecl *NSValueDecl; |
927 | |
928 | /// Pointer to NSNumber type (NSNumber *). |
929 | QualType NSNumberPointer; |
930 | |
931 | /// Pointer to NSValue type (NSValue *). |
932 | QualType NSValuePointer; |
933 | |
934 | /// The Objective-C NSNumber methods used to create NSNumber literals. |
935 | ObjCMethodDecl *NSNumberLiteralMethods[NSAPI::NumNSNumberLiteralMethods]; |
936 | |
937 | /// The declaration of the Objective-C NSString class. |
938 | ObjCInterfaceDecl *NSStringDecl; |
939 | |
940 | /// Pointer to NSString type (NSString *). |
941 | QualType NSStringPointer; |
942 | |
943 | /// The declaration of the stringWithUTF8String: method. |
944 | ObjCMethodDecl *StringWithUTF8StringMethod; |
945 | |
946 | /// The declaration of the valueWithBytes:objCType: method. |
947 | ObjCMethodDecl *ValueWithBytesObjCTypeMethod; |
948 | |
949 | /// The declaration of the Objective-C NSArray class. |
950 | ObjCInterfaceDecl *NSArrayDecl; |
951 | |
952 | /// The declaration of the arrayWithObjects:count: method. |
953 | ObjCMethodDecl *ArrayWithObjectsMethod; |
954 | |
955 | /// The declaration of the Objective-C NSDictionary class. |
956 | ObjCInterfaceDecl *NSDictionaryDecl; |
957 | |
958 | /// The declaration of the dictionaryWithObjects:forKeys:count: method. |
959 | ObjCMethodDecl *DictionaryWithObjectsMethod; |
960 | |
961 | /// id<NSCopying> type. |
962 | QualType QIDNSCopying; |
963 | |
964 | /// will hold 'respondsToSelector:' |
965 | Selector RespondsToSelectorSel; |
966 | |
967 | /// A flag to remember whether the implicit forms of operator new and delete |
968 | /// have been declared. |
969 | bool GlobalNewDeleteDeclared; |
970 | |
971 | /// A flag to indicate that we're in a context that permits abstract |
972 | /// references to fields. This is really a |
973 | bool AllowAbstractFieldReference; |
974 | |
975 | /// Describes how the expressions currently being parsed are |
976 | /// evaluated at run-time, if at all. |
977 | enum class ExpressionEvaluationContext { |
978 | /// The current expression and its subexpressions occur within an |
979 | /// unevaluated operand (C++11 [expr]p7), such as the subexpression of |
980 | /// \c sizeof, where the type of the expression may be significant but |
981 | /// no code will be generated to evaluate the value of the expression at |
982 | /// run time. |
983 | Unevaluated, |
984 | |
985 | /// The current expression occurs within a braced-init-list within |
986 | /// an unevaluated operand. This is mostly like a regular unevaluated |
987 | /// context, except that we still instantiate constexpr functions that are |
988 | /// referenced here so that we can perform narrowing checks correctly. |
989 | UnevaluatedList, |
990 | |
991 | /// The current expression occurs within a discarded statement. |
992 | /// This behaves largely similarly to an unevaluated operand in preventing |
993 | /// definitions from being required, but not in other ways. |
994 | DiscardedStatement, |
995 | |
996 | /// The current expression occurs within an unevaluated |
997 | /// operand that unconditionally permits abstract references to |
998 | /// fields, such as a SIZE operator in MS-style inline assembly. |
999 | UnevaluatedAbstract, |
1000 | |
1001 | /// The current context is "potentially evaluated" in C++11 terms, |
1002 | /// but the expression is evaluated at compile-time (like the values of |
1003 | /// cases in a switch statement). |
1004 | ConstantEvaluated, |
1005 | |
1006 | /// The current expression is potentially evaluated at run time, |
1007 | /// which means that code may be generated to evaluate the value of the |
1008 | /// expression at run time. |
1009 | PotentiallyEvaluated, |
1010 | |
1011 | /// The current expression is potentially evaluated, but any |
1012 | /// declarations referenced inside that expression are only used if |
1013 | /// in fact the current expression is used. |
1014 | /// |
1015 | /// This value is used when parsing default function arguments, for which |
1016 | /// we would like to provide diagnostics (e.g., passing non-POD arguments |
1017 | /// through varargs) but do not want to mark declarations as "referenced" |
1018 | /// until the default argument is used. |
1019 | PotentiallyEvaluatedIfUsed |
1020 | }; |
1021 | |
1022 | /// Data structure used to record current or nested |
1023 | /// expression evaluation contexts. |
1024 | struct ExpressionEvaluationContextRecord { |
1025 | /// The expression evaluation context. |
1026 | ExpressionEvaluationContext Context; |
1027 | |
1028 | /// Whether the enclosing context needed a cleanup. |
1029 | CleanupInfo ParentCleanup; |
1030 | |
1031 | /// Whether we are in a decltype expression. |
1032 | bool IsDecltype; |
1033 | |
1034 | /// The number of active cleanup objects when we entered |
1035 | /// this expression evaluation context. |
1036 | unsigned NumCleanupObjects; |
1037 | |
1038 | /// The number of typos encountered during this expression evaluation |
1039 | /// context (i.e. the number of TypoExprs created). |
1040 | unsigned NumTypos; |
1041 | |
1042 | MaybeODRUseExprSet SavedMaybeODRUseExprs; |
1043 | |
1044 | /// The lambdas that are present within this context, if it |
1045 | /// is indeed an unevaluated context. |
1046 | SmallVector<LambdaExpr *, 2> Lambdas; |
1047 | |
1048 | /// The declaration that provides context for lambda expressions |
1049 | /// and block literals if the normal declaration context does not |
1050 | /// suffice, e.g., in a default function argument. |
1051 | Decl *ManglingContextDecl; |
1052 | |
1053 | /// If we are processing a decltype type, a set of call expressions |
1054 | /// for which we have deferred checking the completeness of the return type. |
1055 | SmallVector<CallExpr *, 8> DelayedDecltypeCalls; |
1056 | |
1057 | /// If we are processing a decltype type, a set of temporary binding |
1058 | /// expressions for which we have deferred checking the destructor. |
1059 | SmallVector<CXXBindTemporaryExpr *, 8> DelayedDecltypeBinds; |
1060 | |
1061 | llvm::SmallPtrSet<const Expr *, 8> PossibleDerefs; |
1062 | |
1063 | /// Expressions appearing as the LHS of a volatile assignment in this |
1064 | /// context. We produce a warning for these when popping the context if |
1065 | /// they are not discarded-value expressions nor unevaluated operands. |
1066 | SmallVector<Expr*, 2> VolatileAssignmentLHSs; |
1067 | |
1068 | /// \brief Describes whether we are in an expression constext which we have |
1069 | /// to handle differently. |
1070 | enum ExpressionKind { |
1071 | EK_Decltype, EK_TemplateArgument, EK_Other |
1072 | } ExprContext; |
1073 | |
1074 | ExpressionEvaluationContextRecord(ExpressionEvaluationContext Context, |
1075 | unsigned NumCleanupObjects, |
1076 | CleanupInfo ParentCleanup, |
1077 | Decl *ManglingContextDecl, |
1078 | ExpressionKind ExprContext) |
1079 | : Context(Context), ParentCleanup(ParentCleanup), |
1080 | NumCleanupObjects(NumCleanupObjects), NumTypos(0), |
1081 | ManglingContextDecl(ManglingContextDecl), ExprContext(ExprContext) {} |
1082 | |
1083 | bool isUnevaluated() const { |
1084 | return Context == ExpressionEvaluationContext::Unevaluated || |
1085 | Context == ExpressionEvaluationContext::UnevaluatedAbstract || |
1086 | Context == ExpressionEvaluationContext::UnevaluatedList; |
1087 | } |
1088 | bool isConstantEvaluated() const { |
1089 | return Context == ExpressionEvaluationContext::ConstantEvaluated; |
1090 | } |
1091 | }; |
1092 | |
1093 | /// A stack of expression evaluation contexts. |
1094 | SmallVector<ExpressionEvaluationContextRecord, 8> ExprEvalContexts; |
1095 | |
1096 | /// Emit a warning for all pending noderef expressions that we recorded. |
1097 | void WarnOnPendingNoDerefs(ExpressionEvaluationContextRecord &Rec); |
1098 | |
1099 | /// Compute the mangling number context for a lambda expression or |
1100 | /// block literal. Also return the extra mangling decl if any. |
1101 | /// |
1102 | /// \param DC - The DeclContext containing the lambda expression or |
1103 | /// block literal. |
1104 | std::tuple<MangleNumberingContext *, Decl *> |
1105 | getCurrentMangleNumberContext(const DeclContext *DC); |
1106 | |
1107 | |
1108 | /// SpecialMemberOverloadResult - The overloading result for a special member |
1109 | /// function. |
1110 | /// |
1111 | /// This is basically a wrapper around PointerIntPair. The lowest bits of the |
1112 | /// integer are used to determine whether overload resolution succeeded. |
1113 | class SpecialMemberOverloadResult { |
1114 | public: |
1115 | enum Kind { |
1116 | NoMemberOrDeleted, |
1117 | Ambiguous, |
1118 | Success |
1119 | }; |
1120 | |
1121 | private: |
1122 | llvm::PointerIntPair<CXXMethodDecl*, 2> Pair; |
1123 | |
1124 | public: |
1125 | SpecialMemberOverloadResult() : Pair() {} |
1126 | SpecialMemberOverloadResult(CXXMethodDecl *MD) |
1127 | : Pair(MD, MD->isDeleted() ? NoMemberOrDeleted : Success) {} |
1128 | |
1129 | CXXMethodDecl *getMethod() const { return Pair.getPointer(); } |
1130 | void setMethod(CXXMethodDecl *MD) { Pair.setPointer(MD); } |
1131 | |
1132 | Kind getKind() const { return static_cast<Kind>(Pair.getInt()); } |
1133 | void setKind(Kind K) { Pair.setInt(K); } |
1134 | }; |
1135 | |
1136 | class SpecialMemberOverloadResultEntry |
1137 | : public llvm::FastFoldingSetNode, |
1138 | public SpecialMemberOverloadResult { |
1139 | public: |
1140 | SpecialMemberOverloadResultEntry(const llvm::FoldingSetNodeID &ID) |
1141 | : FastFoldingSetNode(ID) |
1142 | {} |
1143 | }; |
1144 | |
1145 | /// A cache of special member function overload resolution results |
1146 | /// for C++ records. |
1147 | llvm::FoldingSet<SpecialMemberOverloadResultEntry> SpecialMemberCache; |
1148 | |
1149 | /// A cache of the flags available in enumerations with the flag_bits |
1150 | /// attribute. |
1151 | mutable llvm::DenseMap<const EnumDecl*, llvm::APInt> FlagBitsCache; |
1152 | |
1153 | /// The kind of translation unit we are processing. |
1154 | /// |
1155 | /// When we're processing a complete translation unit, Sema will perform |
1156 | /// end-of-translation-unit semantic tasks (such as creating |
1157 | /// initializers for tentative definitions in C) once parsing has |
1158 | /// completed. Modules and precompiled headers perform different kinds of |
1159 | /// checks. |
1160 | TranslationUnitKind TUKind; |
1161 | |
1162 | llvm::BumpPtrAllocator BumpAlloc; |
1163 | |
1164 | /// The number of SFINAE diagnostics that have been trapped. |
1165 | unsigned NumSFINAEErrors; |
1166 | |
1167 | typedef llvm::DenseMap<ParmVarDecl *, llvm::TinyPtrVector<ParmVarDecl *>> |
1168 | UnparsedDefaultArgInstantiationsMap; |
1169 | |
1170 | /// A mapping from parameters with unparsed default arguments to the |
1171 | /// set of instantiations of each parameter. |
1172 | /// |
1173 | /// This mapping is a temporary data structure used when parsing |
1174 | /// nested class templates or nested classes of class templates, |
1175 | /// where we might end up instantiating an inner class before the |
1176 | /// default arguments of its methods have been parsed. |
1177 | UnparsedDefaultArgInstantiationsMap UnparsedDefaultArgInstantiations; |
1178 | |
1179 | // Contains the locations of the beginning of unparsed default |
1180 | // argument locations. |
1181 | llvm::DenseMap<ParmVarDecl *, SourceLocation> UnparsedDefaultArgLocs; |
1182 | |
1183 | /// UndefinedInternals - all the used, undefined objects which require a |
1184 | /// definition in this translation unit. |
1185 | llvm::MapVector<NamedDecl *, SourceLocation> UndefinedButUsed; |
1186 | |
1187 | /// Determine if VD, which must be a variable or function, is an external |
1188 | /// symbol that nonetheless can't be referenced from outside this translation |
1189 | /// unit because its type has no linkage and it's not extern "C". |
1190 | bool isExternalWithNoLinkageType(ValueDecl *VD); |
1191 | |
1192 | /// Obtain a sorted list of functions that are undefined but ODR-used. |
1193 | void getUndefinedButUsed( |
1194 | SmallVectorImpl<std::pair<NamedDecl *, SourceLocation> > &Undefined); |
1195 | |
1196 | /// Retrieves list of suspicious delete-expressions that will be checked at |
1197 | /// the end of translation unit. |
1198 | const llvm::MapVector<FieldDecl *, DeleteLocs> & |
1199 | getMismatchingDeleteExpressions() const; |
1200 | |
1201 | typedef std::pair<ObjCMethodList, ObjCMethodList> GlobalMethods; |
1202 | typedef llvm::DenseMap<Selector, GlobalMethods> GlobalMethodPool; |
1203 | |
1204 | /// Method Pool - allows efficient lookup when typechecking messages to "id". |
1205 | /// We need to maintain a list, since selectors can have differing signatures |
1206 | /// across classes. In Cocoa, this happens to be extremely uncommon (only 1% |
1207 | /// of selectors are "overloaded"). |
1208 | /// At the head of the list it is recorded whether there were 0, 1, or >= 2 |
1209 | /// methods inside categories with a particular selector. |
1210 | GlobalMethodPool MethodPool; |
1211 | |
1212 | /// Method selectors used in a \@selector expression. Used for implementation |
1213 | /// of -Wselector. |
1214 | llvm::MapVector<Selector, SourceLocation> ReferencedSelectors; |
1215 | |
1216 | /// List of SourceLocations where 'self' is implicitly retained inside a |
1217 | /// block. |
1218 | llvm::SmallVector<std::pair<SourceLocation, const BlockDecl *>, 1> |
1219 | ImplicitlyRetainedSelfLocs; |
1220 | |
1221 | /// Kinds of C++ special members. |
1222 | enum CXXSpecialMember { |
1223 | CXXDefaultConstructor, |
1224 | CXXCopyConstructor, |
1225 | CXXMoveConstructor, |
1226 | CXXCopyAssignment, |
1227 | CXXMoveAssignment, |
1228 | CXXDestructor, |
1229 | CXXInvalid |
1230 | }; |
1231 | |
1232 | typedef llvm::PointerIntPair<CXXRecordDecl *, 3, CXXSpecialMember> |
1233 | SpecialMemberDecl; |
1234 | |
1235 | /// The C++ special members which we are currently in the process of |
1236 | /// declaring. If this process recursively triggers the declaration of the |
1237 | /// same special member, we should act as if it is not yet declared. |
1238 | llvm::SmallPtrSet<SpecialMemberDecl, 4> SpecialMembersBeingDeclared; |
1239 | |
1240 | /// Kinds of defaulted comparison operator functions. |
1241 | enum class DefaultedComparisonKind : unsigned char { |
1242 | /// This is not a defaultable comparison operator. |
1243 | None, |
1244 | /// This is an operator== that should be implemented as a series of |
1245 | /// subobject comparisons. |
1246 | Equal, |
1247 | /// This is an operator<=> that should be implemented as a series of |
1248 | /// subobject comparisons. |
1249 | ThreeWay, |
1250 | /// This is an operator!= that should be implemented as a rewrite in terms |
1251 | /// of a == comparison. |
1252 | NotEqual, |
1253 | /// This is an <, <=, >, or >= that should be implemented as a rewrite in |
1254 | /// terms of a <=> comparison. |
1255 | Relational, |
1256 | }; |
1257 | |
1258 | /// The function definitions which were renamed as part of typo-correction |
1259 | /// to match their respective declarations. We want to keep track of them |
1260 | /// to ensure that we don't emit a "redefinition" error if we encounter a |
1261 | /// correctly named definition after the renamed definition. |
1262 | llvm::SmallPtrSet<const NamedDecl *, 4> TypoCorrectedFunctionDefinitions; |
1263 | |
1264 | /// Stack of types that correspond to the parameter entities that are |
1265 | /// currently being copy-initialized. Can be empty. |
1266 | llvm::SmallVector<QualType, 4> CurrentParameterCopyTypes; |
1267 | |
1268 | void ReadMethodPool(Selector Sel); |
1269 | void updateOutOfDateSelector(Selector Sel); |
1270 | |
1271 | /// Private Helper predicate to check for 'self'. |
1272 | bool isSelfExpr(Expr *RExpr); |
1273 | bool isSelfExpr(Expr *RExpr, const ObjCMethodDecl *Method); |
1274 | |
1275 | /// Cause the active diagnostic on the DiagosticsEngine to be |
1276 | /// emitted. This is closely coupled to the SemaDiagnosticBuilder class and |
1277 | /// should not be used elsewhere. |
1278 | void EmitCurrentDiagnostic(unsigned DiagID); |
1279 | |
1280 | /// Records and restores the FP_CONTRACT state on entry/exit of compound |
1281 | /// statements. |
1282 | class FPContractStateRAII { |
1283 | public: |
1284 | FPContractStateRAII(Sema &S) : S(S), OldFPFeaturesState(S.FPFeatures) {} |
1285 | ~FPContractStateRAII() { S.FPFeatures = OldFPFeaturesState; } |
1286 | |
1287 | private: |
1288 | Sema& S; |
1289 | FPOptions OldFPFeaturesState; |
1290 | }; |
1291 | |
1292 | void addImplicitTypedef(StringRef Name, QualType T); |
1293 | |
1294 | bool WarnedStackExhausted = false; |
1295 | |
1296 | public: |
1297 | Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer, |
1298 | TranslationUnitKind TUKind = TU_Complete, |
1299 | CodeCompleteConsumer *CompletionConsumer = nullptr); |
1300 | ~Sema(); |
1301 | |
1302 | /// Perform initialization that occurs after the parser has been |
1303 | /// initialized but before it parses anything. |
1304 | void Initialize(); |
1305 | |
1306 | const LangOptions &getLangOpts() const { return LangOpts; } |
1307 | OpenCLOptions &getOpenCLOptions() { return OpenCLFeatures; } |
1308 | FPOptions &getFPOptions() { return FPFeatures; } |
1309 | |
1310 | DiagnosticsEngine &getDiagnostics() const { return Diags; } |
1311 | SourceManager &getSourceManager() const { return SourceMgr; } |
1312 | Preprocessor &getPreprocessor() const { return PP; } |
1313 | ASTContext &getASTContext() const { return Context; } |
1314 | ASTConsumer &getASTConsumer() const { return Consumer; } |
1315 | ASTMutationListener *getASTMutationListener() const; |
1316 | ExternalSemaSource* getExternalSource() const { return ExternalSource; } |
1317 | |
1318 | ///Registers an external source. If an external source already exists, |
1319 | /// creates a multiplex external source and appends to it. |
1320 | /// |
1321 | ///\param[in] E - A non-null external sema source. |
1322 | /// |
1323 | void addExternalSource(ExternalSemaSource *E); |
1324 | |
1325 | void PrintStats() const; |
1326 | |
1327 | /// Warn that the stack is nearly exhausted. |
1328 | void warnStackExhausted(SourceLocation Loc); |
1329 | |
1330 | /// Run some code with "sufficient" stack space. (Currently, at least 256K is |
1331 | /// guaranteed). Produces a warning if we're low on stack space and allocates |
1332 | /// more in that case. Use this in code that may recurse deeply (for example, |
1333 | /// in template instantiation) to avoid stack overflow. |
1334 | void runWithSufficientStackSpace(SourceLocation Loc, |
1335 | llvm::function_ref<void()> Fn); |
1336 | |
1337 | /// Helper class that creates diagnostics with optional |
1338 | /// template instantiation stacks. |
1339 | /// |
1340 | /// This class provides a wrapper around the basic DiagnosticBuilder |
1341 | /// class that emits diagnostics. SemaDiagnosticBuilder is |
1342 | /// responsible for emitting the diagnostic (as DiagnosticBuilder |
1343 | /// does) and, if the diagnostic comes from inside a template |
1344 | /// instantiation, printing the template instantiation stack as |
1345 | /// well. |
1346 | class SemaDiagnosticBuilder : public DiagnosticBuilder { |
1347 | Sema &SemaRef; |
1348 | unsigned DiagID; |
1349 | |
1350 | public: |
1351 | SemaDiagnosticBuilder(DiagnosticBuilder &DB, Sema &SemaRef, unsigned DiagID) |
1352 | : DiagnosticBuilder(DB), SemaRef(SemaRef), DiagID(DiagID) { } |
1353 | |
1354 | // This is a cunning lie. DiagnosticBuilder actually performs move |
1355 | // construction in its copy constructor (but due to varied uses, it's not |
1356 | // possible to conveniently express this as actual move construction). So |
1357 | // the default copy ctor here is fine, because the base class disables the |
1358 | // source anyway, so the user-defined ~SemaDiagnosticBuilder is a safe no-op |
1359 | // in that case anwyay. |
1360 | SemaDiagnosticBuilder(const SemaDiagnosticBuilder&) = default; |
1361 | |
1362 | ~SemaDiagnosticBuilder() { |
1363 | // If we aren't active, there is nothing to do. |
1364 | if (!isActive()) return; |
1365 | |
1366 | // Otherwise, we need to emit the diagnostic. First flush the underlying |
1367 | // DiagnosticBuilder data, and clear the diagnostic builder itself so it |
1368 | // won't emit the diagnostic in its own destructor. |
1369 | // |
1370 | // This seems wasteful, in that as written the DiagnosticBuilder dtor will |
1371 | // do its own needless checks to see if the diagnostic needs to be |
1372 | // emitted. However, because we take care to ensure that the builder |
1373 | // objects never escape, a sufficiently smart compiler will be able to |
1374 | // eliminate that code. |
1375 | FlushCounts(); |
1376 | Clear(); |
1377 | |
1378 | // Dispatch to Sema to emit the diagnostic. |
1379 | SemaRef.EmitCurrentDiagnostic(DiagID); |
1380 | } |
1381 | |
1382 | /// Teach operator<< to produce an object of the correct type. |
1383 | template<typename T> |
1384 | friend const SemaDiagnosticBuilder &operator<<( |
1385 | const SemaDiagnosticBuilder &Diag, const T &Value) { |
1386 | const DiagnosticBuilder &BaseDiag = Diag; |
1387 | BaseDiag << Value; |
1388 | return Diag; |
1389 | } |
1390 | }; |
1391 | |
1392 | /// Emit a diagnostic. |
1393 | SemaDiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) { |
1394 | DiagnosticBuilder DB = Diags.Report(Loc, DiagID); |
1395 | return SemaDiagnosticBuilder(DB, *this, DiagID); |
1396 | } |
1397 | |
1398 | /// Emit a partial diagnostic. |
1399 | SemaDiagnosticBuilder Diag(SourceLocation Loc, const PartialDiagnostic& PD); |
1400 | |
1401 | /// Build a partial diagnostic. |
1402 | PartialDiagnostic PDiag(unsigned DiagID = 0); // in SemaInternal.h |
1403 | |
1404 | bool findMacroSpelling(SourceLocation &loc, StringRef name); |
1405 | |
1406 | /// Get a string to suggest for zero-initialization of a type. |
1407 | std::string |
1408 | getFixItZeroInitializerForType(QualType T, SourceLocation Loc) const; |
1409 | std::string getFixItZeroLiteralForType(QualType T, SourceLocation Loc) const; |
1410 | |
1411 | /// Calls \c Lexer::getLocForEndOfToken() |
1412 | SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset = 0); |
1413 | |
1414 | /// Retrieve the module loader associated with the preprocessor. |
1415 | ModuleLoader &getModuleLoader() const; |
1416 | |
1417 | void emitAndClearUnusedLocalTypedefWarnings(); |
1418 | |
1419 | enum TUFragmentKind { |
1420 | /// The global module fragment, between 'module;' and a module-declaration. |
1421 | Global, |
1422 | /// A normal translation unit fragment. For a non-module unit, this is the |
1423 | /// entire translation unit. Otherwise, it runs from the module-declaration |
1424 | /// to the private-module-fragment (if any) or the end of the TU (if not). |
1425 | Normal, |
1426 | /// The private module fragment, between 'module :private;' and the end of |
1427 | /// the translation unit. |
1428 | Private |
1429 | }; |
1430 | |
1431 | void ActOnStartOfTranslationUnit(); |
1432 | void ActOnEndOfTranslationUnit(); |
1433 | void ActOnEndOfTranslationUnitFragment(TUFragmentKind Kind); |
1434 | |
1435 | void CheckDelegatingCtorCycles(); |
1436 | |
1437 | Scope *getScopeForContext(DeclContext *Ctx); |
1438 | |
1439 | void PushFunctionScope(); |
1440 | void PushBlockScope(Scope *BlockScope, BlockDecl *Block); |
1441 | sema::LambdaScopeInfo *PushLambdaScope(); |
1442 | |
1443 | /// This is used to inform Sema what the current TemplateParameterDepth |
1444 | /// is during Parsing. Currently it is used to pass on the depth |
1445 | /// when parsing generic lambda 'auto' parameters. |
1446 | void RecordParsingTemplateParameterDepth(unsigned Depth); |
1447 | |
1448 | void PushCapturedRegionScope(Scope *RegionScope, CapturedDecl *CD, |
1449 | RecordDecl *RD, CapturedRegionKind K, |
1450 | unsigned OpenMPCaptureLevel = 0); |
1451 | |
1452 | /// Custom deleter to allow FunctionScopeInfos to be kept alive for a short |
1453 | /// time after they've been popped. |
1454 | class PoppedFunctionScopeDeleter { |
1455 | Sema *Self; |
1456 | |
1457 | public: |
1458 | explicit PoppedFunctionScopeDeleter(Sema *Self) : Self(Self) {} |
1459 | void operator()(sema::FunctionScopeInfo *Scope) const; |
1460 | }; |
1461 | |
1462 | using PoppedFunctionScopePtr = |
1463 | std::unique_ptr<sema::FunctionScopeInfo, PoppedFunctionScopeDeleter>; |
1464 | |
1465 | PoppedFunctionScopePtr |
1466 | PopFunctionScopeInfo(const sema::AnalysisBasedWarnings::Policy *WP = nullptr, |
1467 | const Decl *D = nullptr, |
1468 | QualType BlockType = QualType()); |
1469 | |
1470 | sema::FunctionScopeInfo *getCurFunction() const { |
1471 | return FunctionScopes.empty() ? nullptr : FunctionScopes.back(); |
1472 | } |
1473 | |
1474 | sema::FunctionScopeInfo *getEnclosingFunction() const; |
1475 | |
1476 | void setFunctionHasBranchIntoScope(); |
1477 | void setFunctionHasBranchProtectedScope(); |
1478 | void setFunctionHasIndirectGoto(); |
1479 | |
1480 | void PushCompoundScope(bool IsStmtExpr); |
1481 | void PopCompoundScope(); |
1482 | |
1483 | sema::CompoundScopeInfo &getCurCompoundScope() const; |
1484 | |
1485 | bool hasAnyUnrecoverableErrorsInThisFunction() const; |
1486 | |
1487 | /// Retrieve the current block, if any. |
1488 | sema::BlockScopeInfo *getCurBlock(); |
1489 | |
1490 | /// Get the innermost lambda enclosing the current location, if any. This |
1491 | /// looks through intervening non-lambda scopes such as local functions and |
1492 | /// blocks. |
1493 | sema::LambdaScopeInfo *getEnclosingLambda() const; |
1494 | |
1495 | /// Retrieve the current lambda scope info, if any. |
1496 | /// \param IgnoreNonLambdaCapturingScope true if should find the top-most |
1497 | /// lambda scope info ignoring all inner capturing scopes that are not |
1498 | /// lambda scopes. |
1499 | sema::LambdaScopeInfo * |
1500 | getCurLambda(bool IgnoreNonLambdaCapturingScope = false); |
1501 | |
1502 | /// Retrieve the current generic lambda info, if any. |
1503 | sema::LambdaScopeInfo *getCurGenericLambda(); |
1504 | |
1505 | /// Retrieve the current captured region, if any. |
1506 | sema::CapturedRegionScopeInfo *getCurCapturedRegion(); |
1507 | |
1508 | /// WeakTopLevelDeclDecls - access to \#pragma weak-generated Decls |
1509 | SmallVectorImpl<Decl *> &WeakTopLevelDecls() { return WeakTopLevelDecl; } |
1510 | |
1511 | void ActOnComment(SourceRange Comment); |
1512 | |
1513 | //===--------------------------------------------------------------------===// |
1514 | // Type Analysis / Processing: SemaType.cpp. |
1515 | // |
1516 | |
1517 | QualType BuildQualifiedType(QualType T, SourceLocation Loc, Qualifiers Qs, |
1518 | const DeclSpec *DS = nullptr); |
1519 | QualType BuildQualifiedType(QualType T, SourceLocation Loc, unsigned CVRA, |
1520 | const DeclSpec *DS = nullptr); |
1521 | QualType BuildPointerType(QualType T, |
1522 | SourceLocation Loc, DeclarationName Entity); |
1523 | QualType BuildReferenceType(QualType T, bool LValueRef, |
1524 | SourceLocation Loc, DeclarationName Entity); |
1525 | QualType BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, |
1526 | Expr *ArraySize, unsigned Quals, |
1527 | SourceRange Brackets, DeclarationName Entity); |
1528 | QualType BuildVectorType(QualType T, Expr *VecSize, SourceLocation AttrLoc); |
1529 | QualType BuildExtVectorType(QualType T, Expr *ArraySize, |
1530 | SourceLocation AttrLoc); |
1531 | QualType BuildAddressSpaceAttr(QualType &T, LangAS ASIdx, Expr *AddrSpace, |
1532 | SourceLocation AttrLoc); |
1533 | |
1534 | /// Same as above, but constructs the AddressSpace index if not provided. |
1535 | QualType BuildAddressSpaceAttr(QualType &T, Expr *AddrSpace, |
1536 | SourceLocation AttrLoc); |
1537 | |
1538 | bool CheckQualifiedFunctionForTypeId(QualType T, SourceLocation Loc); |
1539 | |
1540 | bool CheckFunctionReturnType(QualType T, SourceLocation Loc); |
1541 | |
1542 | /// Build a function type. |
1543 | /// |
1544 | /// This routine checks the function type according to C++ rules and |
1545 | /// under the assumption that the result type and parameter types have |
1546 | /// just been instantiated from a template. It therefore duplicates |
1547 | /// some of the behavior of GetTypeForDeclarator, but in a much |
1548 | /// simpler form that is only suitable for this narrow use case. |
1549 | /// |
1550 | /// \param T The return type of the function. |
1551 | /// |
1552 | /// \param ParamTypes The parameter types of the function. This array |
1553 | /// will be modified to account for adjustments to the types of the |
1554 | /// function parameters. |
1555 | /// |
1556 | /// \param Loc The location of the entity whose type involves this |
1557 | /// function type or, if there is no such entity, the location of the |
1558 | /// type that will have function type. |
1559 | /// |
1560 | /// \param Entity The name of the entity that involves the function |
1561 | /// type, if known. |
1562 | /// |
1563 | /// \param EPI Extra information about the function type. Usually this will |
1564 | /// be taken from an existing function with the same prototype. |
1565 | /// |
1566 | /// \returns A suitable function type, if there are no errors. The |
1567 | /// unqualified type will always be a FunctionProtoType. |
1568 | /// Otherwise, returns a NULL type. |
1569 | QualType BuildFunctionType(QualType T, |
1570 | MutableArrayRef<QualType> ParamTypes, |
1571 | SourceLocation Loc, DeclarationName Entity, |
1572 | const FunctionProtoType::ExtProtoInfo &EPI); |
1573 | |
1574 | QualType BuildMemberPointerType(QualType T, QualType Class, |
1575 | SourceLocation Loc, |
1576 | DeclarationName Entity); |
1577 | QualType BuildBlockPointerType(QualType T, |
1578 | SourceLocation Loc, DeclarationName Entity); |
1579 | QualType BuildParenType(QualType T); |
1580 | QualType BuildAtomicType(QualType T, SourceLocation Loc); |
1581 | QualType BuildReadPipeType(QualType T, |
1582 | SourceLocation Loc); |
1583 | QualType BuildWritePipeType(QualType T, |
1584 | SourceLocation Loc); |
1585 | |
1586 | TypeSourceInfo *GetTypeForDeclarator(Declarator &D, Scope *S); |
1587 | TypeSourceInfo *GetTypeForDeclaratorCast(Declarator &D, QualType FromTy); |
1588 | |
1589 | /// Package the given type and TSI into a ParsedType. |
1590 | ParsedType CreateParsedType(QualType T, TypeSourceInfo *TInfo); |
1591 | DeclarationNameInfo GetNameForDeclarator(Declarator &D); |
1592 | DeclarationNameInfo GetNameFromUnqualifiedId(const UnqualifiedId &Name); |
1593 | static QualType GetTypeFromParser(ParsedType Ty, |
1594 | TypeSourceInfo **TInfo = nullptr); |
1595 | CanThrowResult canThrow(const Expr *E); |
1596 | const FunctionProtoType *ResolveExceptionSpec(SourceLocation Loc, |
1597 | const FunctionProtoType *FPT); |
1598 | void UpdateExceptionSpec(FunctionDecl *FD, |
1599 | const FunctionProtoType::ExceptionSpecInfo &ESI); |
1600 | bool CheckSpecifiedExceptionType(QualType &T, SourceRange Range); |
1601 | bool CheckDistantExceptionSpec(QualType T); |
1602 | bool CheckEquivalentExceptionSpec(FunctionDecl *Old, FunctionDecl *New); |
1603 | bool CheckEquivalentExceptionSpec( |
1604 | const FunctionProtoType *Old, SourceLocation OldLoc, |
1605 | const FunctionProtoType *New, SourceLocation NewLoc); |
1606 | bool CheckEquivalentExceptionSpec( |
1607 | const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, |
1608 | const FunctionProtoType *Old, SourceLocation OldLoc, |
1609 | const FunctionProtoType *New, SourceLocation NewLoc); |
1610 | bool handlerCanCatch(QualType HandlerType, QualType ExceptionType); |
1611 | bool CheckExceptionSpecSubset(const PartialDiagnostic &DiagID, |
1612 | const PartialDiagnostic &NestedDiagID, |
1613 | const PartialDiagnostic &NoteID, |
1614 | const PartialDiagnostic &NoThrowDiagID, |
1615 | const FunctionProtoType *Superset, |
1616 | SourceLocation SuperLoc, |
1617 | const FunctionProtoType *Subset, |
1618 | SourceLocation SubLoc); |
1619 | bool CheckParamExceptionSpec(const PartialDiagnostic &NestedDiagID, |
1620 | const PartialDiagnostic &NoteID, |
1621 | const FunctionProtoType *Target, |
1622 | SourceLocation TargetLoc, |
1623 | const FunctionProtoType *Source, |
1624 | SourceLocation SourceLoc); |
1625 | |
1626 | TypeResult ActOnTypeName(Scope *S, Declarator &D); |
1627 | |
1628 | /// The parser has parsed the context-sensitive type 'instancetype' |
1629 | /// in an Objective-C message declaration. Return the appropriate type. |
1630 | ParsedType ActOnObjCInstanceType(SourceLocation Loc); |
1631 | |
1632 | /// Abstract class used to diagnose incomplete types. |
1633 | struct TypeDiagnoser { |
1634 | TypeDiagnoser() {} |
1635 | |
1636 | virtual void diagnose(Sema &S, SourceLocation Loc, QualType T) = 0; |
1637 | virtual ~TypeDiagnoser() {} |
1638 | }; |
1639 | |
1640 | static int getPrintable(int I) { return I; } |
1641 | static unsigned getPrintable(unsigned I) { return I; } |
1642 | static bool getPrintable(bool B) { return B; } |
1643 | static const char * getPrintable(const char *S) { return S; } |
1644 | static StringRef getPrintable(StringRef S) { return S; } |
1645 | static const std::string &getPrintable(const std::string &S) { return S; } |
1646 | static const IdentifierInfo *getPrintable(const IdentifierInfo *II) { |
1647 | return II; |
1648 | } |
1649 | static DeclarationName getPrintable(DeclarationName N) { return N; } |
1650 | static QualType getPrintable(QualType T) { return T; } |
1651 | static SourceRange getPrintable(SourceRange R) { return R; } |
1652 | static SourceRange getPrintable(SourceLocation L) { return L; } |
1653 | static SourceRange getPrintable(const Expr *E) { return E->getSourceRange(); } |
1654 | static SourceRange getPrintable(TypeLoc TL) { return TL.getSourceRange();} |
1655 | |
1656 | template <typename... Ts> class BoundTypeDiagnoser : public TypeDiagnoser { |
1657 | unsigned DiagID; |
1658 | std::tuple<const Ts &...> Args; |
1659 | |
1660 | template <std::size_t... Is> |
1661 | void emit(const SemaDiagnosticBuilder &DB, |
1662 | std::index_sequence<Is...>) const { |
1663 | // Apply all tuple elements to the builder in order. |
1664 | bool Dummy[] = {false, (DB << getPrintable(std::get<Is>(Args)))...}; |
1665 | (void)Dummy; |
1666 | } |
1667 | |
1668 | public: |
1669 | BoundTypeDiagnoser(unsigned DiagID, const Ts &...Args) |
1670 | : TypeDiagnoser(), DiagID(DiagID), Args(Args...) { |
1671 | assert(DiagID != 0 && "no diagnostic for type diagnoser")((DiagID != 0 && "no diagnostic for type diagnoser") ? static_cast<void> (0) : __assert_fail ("DiagID != 0 && \"no diagnostic for type diagnoser\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 1671, __PRETTY_FUNCTION__)); |
1672 | } |
1673 | |
1674 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { |
1675 | const SemaDiagnosticBuilder &DB = S.Diag(Loc, DiagID); |
1676 | emit(DB, std::index_sequence_for<Ts...>()); |
1677 | DB << T; |
1678 | } |
1679 | }; |
1680 | |
1681 | private: |
1682 | /// Methods for marking which expressions involve dereferencing a pointer |
1683 | /// marked with the 'noderef' attribute. Expressions are checked bottom up as |
1684 | /// they are parsed, meaning that a noderef pointer may not be accessed. For |
1685 | /// example, in `&*p` where `p` is a noderef pointer, we will first parse the |
1686 | /// `*p`, but need to check that `address of` is called on it. This requires |
1687 | /// keeping a container of all pending expressions and checking if the address |
1688 | /// of them are eventually taken. |
1689 | void CheckSubscriptAccessOfNoDeref(const ArraySubscriptExpr *E); |
1690 | void CheckAddressOfNoDeref(const Expr *E); |
1691 | void CheckMemberAccessOfNoDeref(const MemberExpr *E); |
1692 | |
1693 | bool RequireCompleteTypeImpl(SourceLocation Loc, QualType T, |
1694 | TypeDiagnoser *Diagnoser); |
1695 | |
1696 | struct ModuleScope { |
1697 | SourceLocation BeginLoc; |
1698 | clang::Module *Module = nullptr; |
1699 | bool ModuleInterface = false; |
1700 | bool ImplicitGlobalModuleFragment = false; |
1701 | VisibleModuleSet OuterVisibleModules; |
1702 | }; |
1703 | /// The modules we're currently parsing. |
1704 | llvm::SmallVector<ModuleScope, 16> ModuleScopes; |
1705 | |
1706 | /// Namespace definitions that we will export when they finish. |
1707 | llvm::SmallPtrSet<const NamespaceDecl*, 8> DeferredExportedNamespaces; |
1708 | |
1709 | /// Get the module whose scope we are currently within. |
1710 | Module *getCurrentModule() const { |
1711 | return ModuleScopes.empty() ? nullptr : ModuleScopes.back().Module; |
1712 | } |
1713 | |
1714 | VisibleModuleSet VisibleModules; |
1715 | |
1716 | public: |
1717 | /// Get the module owning an entity. |
1718 | Module *getOwningModule(Decl *Entity) { return Entity->getOwningModule(); } |
1719 | |
1720 | /// Make a merged definition of an existing hidden definition \p ND |
1721 | /// visible at the specified location. |
1722 | void makeMergedDefinitionVisible(NamedDecl *ND); |
1723 | |
1724 | bool isModuleVisible(const Module *M, bool ModulePrivate = false); |
1725 | |
1726 | /// Determine whether a declaration is visible to name lookup. |
1727 | bool isVisible(const NamedDecl *D) { |
1728 | return !D->isHidden() || isVisibleSlow(D); |
1729 | } |
1730 | |
1731 | /// Determine whether any declaration of an entity is visible. |
1732 | bool |
1733 | hasVisibleDeclaration(const NamedDecl *D, |
1734 | llvm::SmallVectorImpl<Module *> *Modules = nullptr) { |
1735 | return isVisible(D) || hasVisibleDeclarationSlow(D, Modules); |
1736 | } |
1737 | bool hasVisibleDeclarationSlow(const NamedDecl *D, |
1738 | llvm::SmallVectorImpl<Module *> *Modules); |
1739 | |
1740 | bool hasVisibleMergedDefinition(NamedDecl *Def); |
1741 | bool hasMergedDefinitionInCurrentModule(NamedDecl *Def); |
1742 | |
1743 | /// Determine if \p D and \p Suggested have a structurally compatible |
1744 | /// layout as described in C11 6.2.7/1. |
1745 | bool hasStructuralCompatLayout(Decl *D, Decl *Suggested); |
1746 | |
1747 | /// Determine if \p D has a visible definition. If not, suggest a declaration |
1748 | /// that should be made visible to expose the definition. |
1749 | bool hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested, |
1750 | bool OnlyNeedComplete = false); |
1751 | bool hasVisibleDefinition(const NamedDecl *D) { |
1752 | NamedDecl *Hidden; |
1753 | return hasVisibleDefinition(const_cast<NamedDecl*>(D), &Hidden); |
1754 | } |
1755 | |
1756 | /// Determine if the template parameter \p D has a visible default argument. |
1757 | bool |
1758 | hasVisibleDefaultArgument(const NamedDecl *D, |
1759 | llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1760 | |
1761 | /// Determine if there is a visible declaration of \p D that is an explicit |
1762 | /// specialization declaration for a specialization of a template. (For a |
1763 | /// member specialization, use hasVisibleMemberSpecialization.) |
1764 | bool hasVisibleExplicitSpecialization( |
1765 | const NamedDecl *D, llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1766 | |
1767 | /// Determine if there is a visible declaration of \p D that is a member |
1768 | /// specialization declaration (as opposed to an instantiated declaration). |
1769 | bool hasVisibleMemberSpecialization( |
1770 | const NamedDecl *D, llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1771 | |
1772 | /// Determine if \p A and \p B are equivalent internal linkage declarations |
1773 | /// from different modules, and thus an ambiguity error can be downgraded to |
1774 | /// an extension warning. |
1775 | bool isEquivalentInternalLinkageDeclaration(const NamedDecl *A, |
1776 | const NamedDecl *B); |
1777 | void diagnoseEquivalentInternalLinkageDeclarations( |
1778 | SourceLocation Loc, const NamedDecl *D, |
1779 | ArrayRef<const NamedDecl *> Equiv); |
1780 | |
1781 | bool isUsualDeallocationFunction(const CXXMethodDecl *FD); |
1782 | |
1783 | bool isCompleteType(SourceLocation Loc, QualType T) { |
1784 | return !RequireCompleteTypeImpl(Loc, T, nullptr); |
1785 | } |
1786 | bool RequireCompleteType(SourceLocation Loc, QualType T, |
1787 | TypeDiagnoser &Diagnoser); |
1788 | bool RequireCompleteType(SourceLocation Loc, QualType T, |
1789 | unsigned DiagID); |
1790 | |
1791 | template <typename... Ts> |
1792 | bool RequireCompleteType(SourceLocation Loc, QualType T, unsigned DiagID, |
1793 | const Ts &...Args) { |
1794 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1795 | return RequireCompleteType(Loc, T, Diagnoser); |
1796 | } |
1797 | |
1798 | void completeExprArrayBound(Expr *E); |
1799 | bool RequireCompleteExprType(Expr *E, TypeDiagnoser &Diagnoser); |
1800 | bool RequireCompleteExprType(Expr *E, unsigned DiagID); |
1801 | |
1802 | template <typename... Ts> |
1803 | bool RequireCompleteExprType(Expr *E, unsigned DiagID, const Ts &...Args) { |
1804 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1805 | return RequireCompleteExprType(E, Diagnoser); |
1806 | } |
1807 | |
1808 | bool RequireLiteralType(SourceLocation Loc, QualType T, |
1809 | TypeDiagnoser &Diagnoser); |
1810 | bool RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID); |
1811 | |
1812 | template <typename... Ts> |
1813 | bool RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID, |
1814 | const Ts &...Args) { |
1815 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1816 | return RequireLiteralType(Loc, T, Diagnoser); |
1817 | } |
1818 | |
1819 | QualType getElaboratedType(ElaboratedTypeKeyword Keyword, |
1820 | const CXXScopeSpec &SS, QualType T, |
1821 | TagDecl *OwnedTagDecl = nullptr); |
1822 | |
1823 | QualType BuildTypeofExprType(Expr *E, SourceLocation Loc); |
1824 | /// If AsUnevaluated is false, E is treated as though it were an evaluated |
1825 | /// context, such as when building a type for decltype(auto). |
1826 | QualType BuildDecltypeType(Expr *E, SourceLocation Loc, |
1827 | bool AsUnevaluated = true); |
1828 | QualType BuildUnaryTransformType(QualType BaseType, |
1829 | UnaryTransformType::UTTKind UKind, |
1830 | SourceLocation Loc); |
1831 | |
1832 | //===--------------------------------------------------------------------===// |
1833 | // Symbol table / Decl tracking callbacks: SemaDecl.cpp. |
1834 | // |
1835 | |
1836 | struct SkipBodyInfo { |
1837 | SkipBodyInfo() |
1838 | : ShouldSkip(false), CheckSameAsPrevious(false), Previous(nullptr), |
1839 | New(nullptr) {} |
1840 | bool ShouldSkip; |
1841 | bool CheckSameAsPrevious; |
1842 | NamedDecl *Previous; |
1843 | NamedDecl *New; |
1844 | }; |
1845 | |
1846 | DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType = nullptr); |
1847 | |
1848 | void DiagnoseUseOfUnimplementedSelectors(); |
1849 | |
1850 | bool isSimpleTypeSpecifier(tok::TokenKind Kind) const; |
1851 | |
1852 | ParsedType getTypeName(const IdentifierInfo &II, SourceLocation NameLoc, |
1853 | Scope *S, CXXScopeSpec *SS = nullptr, |
1854 | bool isClassName = false, bool HasTrailingDot = false, |
1855 | ParsedType ObjectType = nullptr, |
1856 | bool IsCtorOrDtorName = false, |
1857 | bool WantNontrivialTypeSourceInfo = false, |
1858 | bool IsClassTemplateDeductionContext = true, |
1859 | IdentifierInfo **CorrectedII = nullptr); |
1860 | TypeSpecifierType isTagName(IdentifierInfo &II, Scope *S); |
1861 | bool isMicrosoftMissingTypename(const CXXScopeSpec *SS, Scope *S); |
1862 | void DiagnoseUnknownTypeName(IdentifierInfo *&II, |
1863 | SourceLocation IILoc, |
1864 | Scope *S, |
1865 | CXXScopeSpec *SS, |
1866 | ParsedType &SuggestedType, |
1867 | bool IsTemplateName = false); |
1868 | |
1869 | /// Attempt to behave like MSVC in situations where lookup of an unqualified |
1870 | /// type name has failed in a dependent context. In these situations, we |
1871 | /// automatically form a DependentTypeName that will retry lookup in a related |
1872 | /// scope during instantiation. |
1873 | ParsedType ActOnMSVCUnknownTypeName(const IdentifierInfo &II, |
1874 | SourceLocation NameLoc, |
1875 | bool IsTemplateTypeArg); |
1876 | |
1877 | /// Describes the result of the name lookup and resolution performed |
1878 | /// by \c ClassifyName(). |
1879 | enum NameClassificationKind { |
1880 | /// This name is not a type or template in this context, but might be |
1881 | /// something else. |
1882 | NC_Unknown, |
1883 | /// Classification failed; an error has been produced. |
1884 | NC_Error, |
1885 | /// The name has been typo-corrected to a keyword. |
1886 | NC_Keyword, |
1887 | /// The name was classified as a type. |
1888 | NC_Type, |
1889 | /// The name was classified as a specific non-type, non-template |
1890 | /// declaration. ActOnNameClassifiedAsNonType should be called to |
1891 | /// convert the declaration to an expression. |
1892 | NC_NonType, |
1893 | /// The name was classified as an ADL-only function name. |
1894 | /// ActOnNameClassifiedAsUndeclaredNonType should be called to convert the |
1895 | /// result to an expression. |
1896 | NC_UndeclaredNonType, |
1897 | /// The name denotes a member of a dependent type that could not be |
1898 | /// resolved. ActOnNameClassifiedAsDependentNonType should be called to |
1899 | /// convert the result to an expression. |
1900 | NC_DependentNonType, |
1901 | /// The name was classified as a non-type, and an expression representing |
1902 | /// that name has been formed. |
1903 | NC_ContextIndependentExpr, |
1904 | /// The name was classified as a template whose specializations are types. |
1905 | NC_TypeTemplate, |
1906 | /// The name was classified as a variable template name. |
1907 | NC_VarTemplate, |
1908 | /// The name was classified as a function template name. |
1909 | NC_FunctionTemplate, |
1910 | /// The name was classified as an ADL-only function template name. |
1911 | NC_UndeclaredTemplate, |
1912 | }; |
1913 | |
1914 | class NameClassification { |
1915 | NameClassificationKind Kind; |
1916 | union { |
1917 | ExprResult Expr; |
1918 | NamedDecl *NonTypeDecl; |
1919 | TemplateName Template; |
1920 | ParsedType Type; |
1921 | }; |
1922 | |
1923 | explicit NameClassification(NameClassificationKind Kind) : Kind(Kind) {} |
1924 | |
1925 | public: |
1926 | NameClassification(ParsedType Type) : Kind(NC_Type), Type(Type) {} |
1927 | |
1928 | NameClassification(const IdentifierInfo *Keyword) : Kind(NC_Keyword) {} |
1929 | |
1930 | static NameClassification Error() { |
1931 | return NameClassification(NC_Error); |
1932 | } |
1933 | |
1934 | static NameClassification Unknown() { |
1935 | return NameClassification(NC_Unknown); |
1936 | } |
1937 | |
1938 | static NameClassification ContextIndependentExpr(ExprResult E) { |
1939 | NameClassification Result(NC_ContextIndependentExpr); |
1940 | Result.Expr = E; |
1941 | return Result; |
1942 | } |
1943 | |
1944 | static NameClassification NonType(NamedDecl *D) { |
1945 | NameClassification Result(NC_NonType); |
1946 | Result.NonTypeDecl = D; |
1947 | return Result; |
1948 | } |
1949 | |
1950 | static NameClassification UndeclaredNonType() { |
1951 | return NameClassification(NC_UndeclaredNonType); |
1952 | } |
1953 | |
1954 | static NameClassification DependentNonType() { |
1955 | return NameClassification(NC_DependentNonType); |
1956 | } |
1957 | |
1958 | static NameClassification TypeTemplate(TemplateName Name) { |
1959 | NameClassification Result(NC_TypeTemplate); |
1960 | Result.Template = Name; |
1961 | return Result; |
1962 | } |
1963 | |
1964 | static NameClassification VarTemplate(TemplateName Name) { |
1965 | NameClassification Result(NC_VarTemplate); |
1966 | Result.Template = Name; |
1967 | return Result; |
1968 | } |
1969 | |
1970 | static NameClassification FunctionTemplate(TemplateName Name) { |
1971 | NameClassification Result(NC_FunctionTemplate); |
1972 | Result.Template = Name; |
1973 | return Result; |
1974 | } |
1975 | |
1976 | static NameClassification UndeclaredTemplate(TemplateName Name) { |
1977 | NameClassification Result(NC_UndeclaredTemplate); |
1978 | Result.Template = Name; |
1979 | return Result; |
1980 | } |
1981 | |
1982 | NameClassificationKind getKind() const { return Kind; } |
1983 | |
1984 | ExprResult getExpression() const { |
1985 | assert(Kind == NC_ContextIndependentExpr)((Kind == NC_ContextIndependentExpr) ? static_cast<void> (0) : __assert_fail ("Kind == NC_ContextIndependentExpr", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 1985, __PRETTY_FUNCTION__)); |
1986 | return Expr; |
1987 | } |
1988 | |
1989 | ParsedType getType() const { |
1990 | assert(Kind == NC_Type)((Kind == NC_Type) ? static_cast<void> (0) : __assert_fail ("Kind == NC_Type", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 1990, __PRETTY_FUNCTION__)); |
1991 | return Type; |
1992 | } |
1993 | |
1994 | NamedDecl *getNonTypeDecl() const { |
1995 | assert(Kind == NC_NonType)((Kind == NC_NonType) ? static_cast<void> (0) : __assert_fail ("Kind == NC_NonType", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 1995, __PRETTY_FUNCTION__)); |
1996 | return NonTypeDecl; |
1997 | } |
1998 | |
1999 | TemplateName getTemplateName() const { |
2000 | assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate ||((Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate || Kind == NC_UndeclaredTemplate) ? static_cast <void> (0) : __assert_fail ("Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate || Kind == NC_UndeclaredTemplate" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 2001, __PRETTY_FUNCTION__)) |
2001 | Kind == NC_VarTemplate || Kind == NC_UndeclaredTemplate)((Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate || Kind == NC_UndeclaredTemplate) ? static_cast <void> (0) : __assert_fail ("Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate || Kind == NC_UndeclaredTemplate" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 2001, __PRETTY_FUNCTION__)); |
2002 | return Template; |
2003 | } |
2004 | |
2005 | TemplateNameKind getTemplateNameKind() const { |
2006 | switch (Kind) { |
2007 | case NC_TypeTemplate: |
2008 | return TNK_Type_template; |
2009 | case NC_FunctionTemplate: |
2010 | return TNK_Function_template; |
2011 | case NC_VarTemplate: |
2012 | return TNK_Var_template; |
2013 | case NC_UndeclaredTemplate: |
2014 | return TNK_Undeclared_template; |
2015 | default: |
2016 | llvm_unreachable("unsupported name classification.")::llvm::llvm_unreachable_internal("unsupported name classification." , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 2016); |
2017 | } |
2018 | } |
2019 | }; |
2020 | |
2021 | /// Perform name lookup on the given name, classifying it based on |
2022 | /// the results of name lookup and the following token. |
2023 | /// |
2024 | /// This routine is used by the parser to resolve identifiers and help direct |
2025 | /// parsing. When the identifier cannot be found, this routine will attempt |
2026 | /// to correct the typo and classify based on the resulting name. |
2027 | /// |
2028 | /// \param S The scope in which we're performing name lookup. |
2029 | /// |
2030 | /// \param SS The nested-name-specifier that precedes the name. |
2031 | /// |
2032 | /// \param Name The identifier. If typo correction finds an alternative name, |
2033 | /// this pointer parameter will be updated accordingly. |
2034 | /// |
2035 | /// \param NameLoc The location of the identifier. |
2036 | /// |
2037 | /// \param NextToken The token following the identifier. Used to help |
2038 | /// disambiguate the name. |
2039 | /// |
2040 | /// \param CCC The correction callback, if typo correction is desired. |
2041 | NameClassification ClassifyName(Scope *S, CXXScopeSpec &SS, |
2042 | IdentifierInfo *&Name, SourceLocation NameLoc, |
2043 | const Token &NextToken, |
2044 | CorrectionCandidateCallback *CCC = nullptr); |
2045 | |
2046 | /// Act on the result of classifying a name as an undeclared (ADL-only) |
2047 | /// non-type declaration. |
2048 | ExprResult ActOnNameClassifiedAsUndeclaredNonType(IdentifierInfo *Name, |
2049 | SourceLocation NameLoc); |
2050 | /// Act on the result of classifying a name as an undeclared member of a |
2051 | /// dependent base class. |
2052 | ExprResult ActOnNameClassifiedAsDependentNonType(const CXXScopeSpec &SS, |
2053 | IdentifierInfo *Name, |
2054 | SourceLocation NameLoc, |
2055 | bool IsAddressOfOperand); |
2056 | /// Act on the result of classifying a name as a specific non-type |
2057 | /// declaration. |
2058 | ExprResult ActOnNameClassifiedAsNonType(Scope *S, const CXXScopeSpec &SS, |
2059 | NamedDecl *Found, |
2060 | SourceLocation NameLoc, |
2061 | const Token &NextToken); |
2062 | |
2063 | /// Describes the detailed kind of a template name. Used in diagnostics. |
2064 | enum class TemplateNameKindForDiagnostics { |
2065 | ClassTemplate, |
2066 | FunctionTemplate, |
2067 | VarTemplate, |
2068 | AliasTemplate, |
2069 | TemplateTemplateParam, |
2070 | Concept, |
2071 | DependentTemplate |
2072 | }; |
2073 | TemplateNameKindForDiagnostics |
2074 | getTemplateNameKindForDiagnostics(TemplateName Name); |
2075 | |
2076 | /// Determine whether it's plausible that E was intended to be a |
2077 | /// template-name. |
2078 | bool mightBeIntendedToBeTemplateName(ExprResult E, bool &Dependent) { |
2079 | if (!getLangOpts().CPlusPlus || E.isInvalid()) |
2080 | return false; |
2081 | Dependent = false; |
2082 | if (auto *DRE = dyn_cast<DeclRefExpr>(E.get())) |
2083 | return !DRE->hasExplicitTemplateArgs(); |
2084 | if (auto *ME = dyn_cast<MemberExpr>(E.get())) |
2085 | return !ME->hasExplicitTemplateArgs(); |
2086 | Dependent = true; |
2087 | if (auto *DSDRE = dyn_cast<DependentScopeDeclRefExpr>(E.get())) |
2088 | return !DSDRE->hasExplicitTemplateArgs(); |
2089 | if (auto *DSME = dyn_cast<CXXDependentScopeMemberExpr>(E.get())) |
2090 | return !DSME->hasExplicitTemplateArgs(); |
2091 | // Any additional cases recognized here should also be handled by |
2092 | // diagnoseExprIntendedAsTemplateName. |
2093 | return false; |
2094 | } |
2095 | void diagnoseExprIntendedAsTemplateName(Scope *S, ExprResult TemplateName, |
2096 | SourceLocation Less, |
2097 | SourceLocation Greater); |
2098 | |
2099 | Decl *ActOnDeclarator(Scope *S, Declarator &D); |
2100 | |
2101 | NamedDecl *HandleDeclarator(Scope *S, Declarator &D, |
2102 | MultiTemplateParamsArg TemplateParameterLists); |
2103 | void RegisterLocallyScopedExternCDecl(NamedDecl *ND, Scope *S); |
2104 | bool DiagnoseClassNameShadow(DeclContext *DC, DeclarationNameInfo Info); |
2105 | bool diagnoseQualifiedDeclaration(CXXScopeSpec &SS, DeclContext *DC, |
2106 | DeclarationName Name, SourceLocation Loc, |
2107 | bool IsTemplateId); |
2108 | void |
2109 | diagnoseIgnoredQualifiers(unsigned DiagID, unsigned Quals, |
2110 | SourceLocation FallbackLoc, |
2111 | SourceLocation ConstQualLoc = SourceLocation(), |
2112 | SourceLocation VolatileQualLoc = SourceLocation(), |
2113 | SourceLocation RestrictQualLoc = SourceLocation(), |
2114 | SourceLocation AtomicQualLoc = SourceLocation(), |
2115 | SourceLocation UnalignedQualLoc = SourceLocation()); |
2116 | |
2117 | static bool adjustContextForLocalExternDecl(DeclContext *&DC); |
2118 | void DiagnoseFunctionSpecifiers(const DeclSpec &DS); |
2119 | NamedDecl *getShadowedDeclaration(const TypedefNameDecl *D, |
2120 | const LookupResult &R); |
2121 | NamedDecl *getShadowedDeclaration(const VarDecl *D, const LookupResult &R); |
2122 | void CheckShadow(NamedDecl *D, NamedDecl *ShadowedDecl, |
2123 | const LookupResult &R); |
2124 | void CheckShadow(Scope *S, VarDecl *D); |
2125 | |
2126 | /// Warn if 'E', which is an expression that is about to be modified, refers |
2127 | /// to a shadowing declaration. |
2128 | void CheckShadowingDeclModification(Expr *E, SourceLocation Loc); |
2129 | |
2130 | void DiagnoseShadowingLambdaDecls(const sema::LambdaScopeInfo *LSI); |
2131 | |
2132 | private: |
2133 | /// Map of current shadowing declarations to shadowed declarations. Warn if |
2134 | /// it looks like the user is trying to modify the shadowing declaration. |
2135 | llvm::DenseMap<const NamedDecl *, const NamedDecl *> ShadowingDecls; |
2136 | |
2137 | public: |
2138 | void CheckCastAlign(Expr *Op, QualType T, SourceRange TRange); |
2139 | void handleTagNumbering(const TagDecl *Tag, Scope *TagScope); |
2140 | void setTagNameForLinkagePurposes(TagDecl *TagFromDeclSpec, |
2141 | TypedefNameDecl *NewTD); |
2142 | void CheckTypedefForVariablyModifiedType(Scope *S, TypedefNameDecl *D); |
2143 | NamedDecl* ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC, |
2144 | TypeSourceInfo *TInfo, |
2145 | LookupResult &Previous); |
2146 | NamedDecl* ActOnTypedefNameDecl(Scope* S, DeclContext* DC, TypedefNameDecl *D, |
2147 | LookupResult &Previous, bool &Redeclaration); |
2148 | NamedDecl *ActOnVariableDeclarator(Scope *S, Declarator &D, DeclContext *DC, |
2149 | TypeSourceInfo *TInfo, |
2150 | LookupResult &Previous, |
2151 | MultiTemplateParamsArg TemplateParamLists, |
2152 | bool &AddToScope, |
2153 | ArrayRef<BindingDecl *> Bindings = None); |
2154 | NamedDecl * |
2155 | ActOnDecompositionDeclarator(Scope *S, Declarator &D, |
2156 | MultiTemplateParamsArg TemplateParamLists); |
2157 | // Returns true if the variable declaration is a redeclaration |
2158 | bool CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous); |
2159 | void CheckVariableDeclarationType(VarDecl *NewVD); |
2160 | bool DeduceVariableDeclarationType(VarDecl *VDecl, bool DirectInit, |
2161 | Expr *Init); |
2162 | void CheckCompleteVariableDeclaration(VarDecl *VD); |
2163 | void CheckCompleteDecompositionDeclaration(DecompositionDecl *DD); |
2164 | void MaybeSuggestAddingStaticToDecl(const FunctionDecl *D); |
2165 | |
2166 | NamedDecl* ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC, |
2167 | TypeSourceInfo *TInfo, |
2168 | LookupResult &Previous, |
2169 | MultiTemplateParamsArg TemplateParamLists, |
2170 | bool &AddToScope); |
2171 | bool AddOverriddenMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); |
2172 | |
2173 | enum class CheckConstexprKind { |
2174 | /// Diagnose issues that are non-constant or that are extensions. |
2175 | Diagnose, |
2176 | /// Identify whether this function satisfies the formal rules for constexpr |
2177 | /// functions in the current lanugage mode (with no extensions). |
2178 | CheckValid |
2179 | }; |
2180 | |
2181 | bool CheckConstexprFunctionDefinition(const FunctionDecl *FD, |
2182 | CheckConstexprKind Kind); |
2183 | |
2184 | void DiagnoseHiddenVirtualMethods(CXXMethodDecl *MD); |
2185 | void FindHiddenVirtualMethods(CXXMethodDecl *MD, |
2186 | SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods); |
2187 | void NoteHiddenVirtualMethods(CXXMethodDecl *MD, |
2188 | SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods); |
2189 | // Returns true if the function declaration is a redeclaration |
2190 | bool CheckFunctionDeclaration(Scope *S, |
2191 | FunctionDecl *NewFD, LookupResult &Previous, |
2192 | bool IsMemberSpecialization); |
2193 | bool shouldLinkDependentDeclWithPrevious(Decl *D, Decl *OldDecl); |
2194 | bool canFullyTypeCheckRedeclaration(ValueDecl *NewD, ValueDecl *OldD, |
2195 | QualType NewT, QualType OldT); |
2196 | void CheckMain(FunctionDecl *FD, const DeclSpec &D); |
2197 | void CheckMSVCRTEntryPoint(FunctionDecl *FD); |
2198 | Attr *getImplicitCodeSegOrSectionAttrForFunction(const FunctionDecl *FD, |
2199 | bool IsDefinition); |
2200 | void CheckFunctionOrTemplateParamDeclarator(Scope *S, Declarator &D); |
2201 | Decl *ActOnParamDeclarator(Scope *S, Declarator &D); |
2202 | ParmVarDecl *BuildParmVarDeclForTypedef(DeclContext *DC, |
2203 | SourceLocation Loc, |
2204 | QualType T); |
2205 | ParmVarDecl *CheckParameter(DeclContext *DC, SourceLocation StartLoc, |
2206 | SourceLocation NameLoc, IdentifierInfo *Name, |
2207 | QualType T, TypeSourceInfo *TSInfo, |
2208 | StorageClass SC); |
2209 | void ActOnParamDefaultArgument(Decl *param, |
2210 | SourceLocation EqualLoc, |
2211 | Expr *defarg); |
2212 | void ActOnParamUnparsedDefaultArgument(Decl *param, |
2213 | SourceLocation EqualLoc, |
2214 | SourceLocation ArgLoc); |
2215 | void ActOnParamDefaultArgumentError(Decl *param, SourceLocation EqualLoc); |
2216 | bool SetParamDefaultArgument(ParmVarDecl *Param, Expr *DefaultArg, |
2217 | SourceLocation EqualLoc); |
2218 | |
2219 | // Contexts where using non-trivial C union types can be disallowed. This is |
2220 | // passed to err_non_trivial_c_union_in_invalid_context. |
2221 | enum NonTrivialCUnionContext { |
2222 | // Function parameter. |
2223 | NTCUC_FunctionParam, |
2224 | // Function return. |
2225 | NTCUC_FunctionReturn, |
2226 | // Default-initialized object. |
2227 | NTCUC_DefaultInitializedObject, |
2228 | // Variable with automatic storage duration. |
2229 | NTCUC_AutoVar, |
2230 | // Initializer expression that might copy from another object. |
2231 | NTCUC_CopyInit, |
2232 | // Assignment. |
2233 | NTCUC_Assignment, |
2234 | // Compound literal. |
2235 | NTCUC_CompoundLiteral, |
2236 | // Block capture. |
2237 | NTCUC_BlockCapture, |
2238 | // lvalue-to-rvalue conversion of volatile type. |
2239 | NTCUC_LValueToRValueVolatile, |
2240 | }; |
2241 | |
2242 | /// Emit diagnostics if the initializer or any of its explicit or |
2243 | /// implicitly-generated subexpressions require copying or |
2244 | /// default-initializing a type that is or contains a C union type that is |
2245 | /// non-trivial to copy or default-initialize. |
2246 | void checkNonTrivialCUnionInInitializer(const Expr *Init, SourceLocation Loc); |
2247 | |
2248 | // These flags are passed to checkNonTrivialCUnion. |
2249 | enum NonTrivialCUnionKind { |
2250 | NTCUK_Init = 0x1, |
2251 | NTCUK_Destruct = 0x2, |
2252 | NTCUK_Copy = 0x4, |
2253 | }; |
2254 | |
2255 | /// Emit diagnostics if a non-trivial C union type or a struct that contains |
2256 | /// a non-trivial C union is used in an invalid context. |
2257 | void checkNonTrivialCUnion(QualType QT, SourceLocation Loc, |
2258 | NonTrivialCUnionContext UseContext, |
2259 | unsigned NonTrivialKind); |
2260 | |
2261 | void AddInitializerToDecl(Decl *dcl, Expr *init, bool DirectInit); |
2262 | void ActOnUninitializedDecl(Decl *dcl); |
2263 | void ActOnInitializerError(Decl *Dcl); |
2264 | |
2265 | void ActOnPureSpecifier(Decl *D, SourceLocation PureSpecLoc); |
2266 | void ActOnCXXForRangeDecl(Decl *D); |
2267 | StmtResult ActOnCXXForRangeIdentifier(Scope *S, SourceLocation IdentLoc, |
2268 | IdentifierInfo *Ident, |
2269 | ParsedAttributes &Attrs, |
2270 | SourceLocation AttrEnd); |
2271 | void SetDeclDeleted(Decl *dcl, SourceLocation DelLoc); |
2272 | void SetDeclDefaulted(Decl *dcl, SourceLocation DefaultLoc); |
2273 | void CheckStaticLocalForDllExport(VarDecl *VD); |
2274 | void FinalizeDeclaration(Decl *D); |
2275 | DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, |
2276 | ArrayRef<Decl *> Group); |
2277 | DeclGroupPtrTy BuildDeclaratorGroup(MutableArrayRef<Decl *> Group); |
2278 | |
2279 | /// Should be called on all declarations that might have attached |
2280 | /// documentation comments. |
2281 | void ActOnDocumentableDecl(Decl *D); |
2282 | void ActOnDocumentableDecls(ArrayRef<Decl *> Group); |
2283 | |
2284 | void ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D, |
2285 | SourceLocation LocAfterDecls); |
2286 | void CheckForFunctionRedefinition( |
2287 | FunctionDecl *FD, const FunctionDecl *EffectiveDefinition = nullptr, |
2288 | SkipBodyInfo *SkipBody = nullptr); |
2289 | Decl *ActOnStartOfFunctionDef(Scope *S, Declarator &D, |
2290 | MultiTemplateParamsArg TemplateParamLists, |
2291 | SkipBodyInfo *SkipBody = nullptr); |
2292 | Decl *ActOnStartOfFunctionDef(Scope *S, Decl *D, |
2293 | SkipBodyInfo *SkipBody = nullptr); |
2294 | void ActOnStartOfObjCMethodDef(Scope *S, Decl *D); |
2295 | bool isObjCMethodDecl(Decl *D) { |
2296 | return D && isa<ObjCMethodDecl>(D); |
2297 | } |
2298 | |
2299 | /// Determine whether we can delay parsing the body of a function or |
2300 | /// function template until it is used, assuming we don't care about emitting |
2301 | /// code for that function. |
2302 | /// |
2303 | /// This will be \c false if we may need the body of the function in the |
2304 | /// middle of parsing an expression (where it's impractical to switch to |
2305 | /// parsing a different function), for instance, if it's constexpr in C++11 |
2306 | /// or has an 'auto' return type in C++14. These cases are essentially bugs. |
2307 | bool canDelayFunctionBody(const Declarator &D); |
2308 | |
2309 | /// Determine whether we can skip parsing the body of a function |
2310 | /// definition, assuming we don't care about analyzing its body or emitting |
2311 | /// code for that function. |
2312 | /// |
2313 | /// This will be \c false only if we may need the body of the function in |
2314 | /// order to parse the rest of the program (for instance, if it is |
2315 | /// \c constexpr in C++11 or has an 'auto' return type in C++14). |
2316 | bool canSkipFunctionBody(Decl *D); |
2317 | |
2318 | void computeNRVO(Stmt *Body, sema::FunctionScopeInfo *Scope); |
2319 | Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body); |
2320 | Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body, bool IsInstantiation); |
2321 | Decl *ActOnSkippedFunctionBody(Decl *Decl); |
2322 | void ActOnFinishInlineFunctionDef(FunctionDecl *D); |
2323 | |
2324 | /// ActOnFinishDelayedAttribute - Invoked when we have finished parsing an |
2325 | /// attribute for which parsing is delayed. |
2326 | void ActOnFinishDelayedAttribute(Scope *S, Decl *D, ParsedAttributes &Attrs); |
2327 | |
2328 | /// Diagnose any unused parameters in the given sequence of |
2329 | /// ParmVarDecl pointers. |
2330 | void DiagnoseUnusedParameters(ArrayRef<ParmVarDecl *> Parameters); |
2331 | |
2332 | /// Diagnose whether the size of parameters or return value of a |
2333 | /// function or obj-c method definition is pass-by-value and larger than a |
2334 | /// specified threshold. |
2335 | void |
2336 | DiagnoseSizeOfParametersAndReturnValue(ArrayRef<ParmVarDecl *> Parameters, |
2337 | QualType ReturnTy, NamedDecl *D); |
2338 | |
2339 | void DiagnoseInvalidJumps(Stmt *Body); |
2340 | Decl *ActOnFileScopeAsmDecl(Expr *expr, |
2341 | SourceLocation AsmLoc, |
2342 | SourceLocation RParenLoc); |
2343 | |
2344 | /// Handle a C++11 empty-declaration and attribute-declaration. |
2345 | Decl *ActOnEmptyDeclaration(Scope *S, const ParsedAttributesView &AttrList, |
2346 | SourceLocation SemiLoc); |
2347 | |
2348 | enum class ModuleDeclKind { |
2349 | Interface, ///< 'export module X;' |
2350 | Implementation, ///< 'module X;' |
2351 | }; |
2352 | |
2353 | /// The parser has processed a module-declaration that begins the definition |
2354 | /// of a module interface or implementation. |
2355 | DeclGroupPtrTy ActOnModuleDecl(SourceLocation StartLoc, |
2356 | SourceLocation ModuleLoc, ModuleDeclKind MDK, |
2357 | ModuleIdPath Path, bool IsFirstDecl); |
2358 | |
2359 | /// The parser has processed a global-module-fragment declaration that begins |
2360 | /// the definition of the global module fragment of the current module unit. |
2361 | /// \param ModuleLoc The location of the 'module' keyword. |
2362 | DeclGroupPtrTy ActOnGlobalModuleFragmentDecl(SourceLocation ModuleLoc); |
2363 | |
2364 | /// The parser has processed a private-module-fragment declaration that begins |
2365 | /// the definition of the private module fragment of the current module unit. |
2366 | /// \param ModuleLoc The location of the 'module' keyword. |
2367 | /// \param PrivateLoc The location of the 'private' keyword. |
2368 | DeclGroupPtrTy ActOnPrivateModuleFragmentDecl(SourceLocation ModuleLoc, |
2369 | SourceLocation PrivateLoc); |
2370 | |
2371 | /// The parser has processed a module import declaration. |
2372 | /// |
2373 | /// \param StartLoc The location of the first token in the declaration. This |
2374 | /// could be the location of an '@', 'export', or 'import'. |
2375 | /// \param ExportLoc The location of the 'export' keyword, if any. |
2376 | /// \param ImportLoc The location of the 'import' keyword. |
2377 | /// \param Path The module access path. |
2378 | DeclResult ActOnModuleImport(SourceLocation StartLoc, |
2379 | SourceLocation ExportLoc, |
2380 | SourceLocation ImportLoc, ModuleIdPath Path); |
2381 | DeclResult ActOnModuleImport(SourceLocation StartLoc, |
2382 | SourceLocation ExportLoc, |
2383 | SourceLocation ImportLoc, Module *M, |
2384 | ModuleIdPath Path = {}); |
2385 | |
2386 | /// The parser has processed a module import translated from a |
2387 | /// #include or similar preprocessing directive. |
2388 | void ActOnModuleInclude(SourceLocation DirectiveLoc, Module *Mod); |
2389 | void BuildModuleInclude(SourceLocation DirectiveLoc, Module *Mod); |
2390 | |
2391 | /// The parsed has entered a submodule. |
2392 | void ActOnModuleBegin(SourceLocation DirectiveLoc, Module *Mod); |
2393 | /// The parser has left a submodule. |
2394 | void ActOnModuleEnd(SourceLocation DirectiveLoc, Module *Mod); |
2395 | |
2396 | /// Create an implicit import of the given module at the given |
2397 | /// source location, for error recovery, if possible. |
2398 | /// |
2399 | /// This routine is typically used when an entity found by name lookup |
2400 | /// is actually hidden within a module that we know about but the user |
2401 | /// has forgotten to import. |
2402 | void createImplicitModuleImportForErrorRecovery(SourceLocation Loc, |
2403 | Module *Mod); |
2404 | |
2405 | /// Kinds of missing import. Note, the values of these enumerators correspond |
2406 | /// to %select values in diagnostics. |
2407 | enum class MissingImportKind { |
2408 | Declaration, |
2409 | Definition, |
2410 | DefaultArgument, |
2411 | ExplicitSpecialization, |
2412 | PartialSpecialization |
2413 | }; |
2414 | |
2415 | /// Diagnose that the specified declaration needs to be visible but |
2416 | /// isn't, and suggest a module import that would resolve the problem. |
2417 | void diagnoseMissingImport(SourceLocation Loc, NamedDecl *Decl, |
2418 | MissingImportKind MIK, bool Recover = true); |
2419 | void diagnoseMissingImport(SourceLocation Loc, NamedDecl *Decl, |
2420 | SourceLocation DeclLoc, ArrayRef<Module *> Modules, |
2421 | MissingImportKind MIK, bool Recover); |
2422 | |
2423 | Decl *ActOnStartExportDecl(Scope *S, SourceLocation ExportLoc, |
2424 | SourceLocation LBraceLoc); |
2425 | Decl *ActOnFinishExportDecl(Scope *S, Decl *ExportDecl, |
2426 | SourceLocation RBraceLoc); |
2427 | |
2428 | /// We've found a use of a templated declaration that would trigger an |
2429 | /// implicit instantiation. Check that any relevant explicit specializations |
2430 | /// and partial specializations are visible, and diagnose if not. |
2431 | void checkSpecializationVisibility(SourceLocation Loc, NamedDecl *Spec); |
2432 | |
2433 | /// We've found a use of a template specialization that would select a |
2434 | /// partial specialization. Check that the partial specialization is visible, |
2435 | /// and diagnose if not. |
2436 | void checkPartialSpecializationVisibility(SourceLocation Loc, |
2437 | NamedDecl *Spec); |
2438 | |
2439 | /// Retrieve a suitable printing policy for diagnostics. |
2440 | PrintingPolicy getPrintingPolicy() const { |
2441 | return getPrintingPolicy(Context, PP); |
2442 | } |
2443 | |
2444 | /// Retrieve a suitable printing policy for diagnostics. |
2445 | static PrintingPolicy getPrintingPolicy(const ASTContext &Ctx, |
2446 | const Preprocessor &PP); |
2447 | |
2448 | /// Scope actions. |
2449 | void ActOnPopScope(SourceLocation Loc, Scope *S); |
2450 | void ActOnTranslationUnitScope(Scope *S); |
2451 | |
2452 | Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, |
2453 | RecordDecl *&AnonRecord); |
2454 | Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, |
2455 | MultiTemplateParamsArg TemplateParams, |
2456 | bool IsExplicitInstantiation, |
2457 | RecordDecl *&AnonRecord); |
2458 | |
2459 | Decl *BuildAnonymousStructOrUnion(Scope *S, DeclSpec &DS, |
2460 | AccessSpecifier AS, |
2461 | RecordDecl *Record, |
2462 | const PrintingPolicy &Policy); |
2463 | |
2464 | Decl *BuildMicrosoftCAnonymousStruct(Scope *S, DeclSpec &DS, |
2465 | RecordDecl *Record); |
2466 | |
2467 | /// Common ways to introduce type names without a tag for use in diagnostics. |
2468 | /// Keep in sync with err_tag_reference_non_tag. |
2469 | enum NonTagKind { |
2470 | NTK_NonStruct, |
2471 | NTK_NonClass, |
2472 | NTK_NonUnion, |
2473 | NTK_NonEnum, |
2474 | NTK_Typedef, |
2475 | NTK_TypeAlias, |
2476 | NTK_Template, |
2477 | NTK_TypeAliasTemplate, |
2478 | NTK_TemplateTemplateArgument, |
2479 | }; |
2480 | |
2481 | /// Given a non-tag type declaration, returns an enum useful for indicating |
2482 | /// what kind of non-tag type this is. |
2483 | NonTagKind getNonTagTypeDeclKind(const Decl *D, TagTypeKind TTK); |
2484 | |
2485 | bool isAcceptableTagRedeclaration(const TagDecl *Previous, |
2486 | TagTypeKind NewTag, bool isDefinition, |
2487 | SourceLocation NewTagLoc, |
2488 | const IdentifierInfo *Name); |
2489 | |
2490 | enum TagUseKind { |
2491 | TUK_Reference, // Reference to a tag: 'struct foo *X;' |
2492 | TUK_Declaration, // Fwd decl of a tag: 'struct foo;' |
2493 | TUK_Definition, // Definition of a tag: 'struct foo { int X; } Y;' |
2494 | TUK_Friend // Friend declaration: 'friend struct foo;' |
2495 | }; |
2496 | |
2497 | Decl *ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, |
2498 | SourceLocation KWLoc, CXXScopeSpec &SS, IdentifierInfo *Name, |
2499 | SourceLocation NameLoc, const ParsedAttributesView &Attr, |
2500 | AccessSpecifier AS, SourceLocation ModulePrivateLoc, |
2501 | MultiTemplateParamsArg TemplateParameterLists, bool &OwnedDecl, |
2502 | bool &IsDependent, SourceLocation ScopedEnumKWLoc, |
2503 | bool ScopedEnumUsesClassTag, TypeResult UnderlyingType, |
2504 | bool IsTypeSpecifier, bool IsTemplateParamOrArg, |
2505 | SkipBodyInfo *SkipBody = nullptr); |
2506 | |
2507 | Decl *ActOnTemplatedFriendTag(Scope *S, SourceLocation FriendLoc, |
2508 | unsigned TagSpec, SourceLocation TagLoc, |
2509 | CXXScopeSpec &SS, IdentifierInfo *Name, |
2510 | SourceLocation NameLoc, |
2511 | const ParsedAttributesView &Attr, |
2512 | MultiTemplateParamsArg TempParamLists); |
2513 | |
2514 | TypeResult ActOnDependentTag(Scope *S, |
2515 | unsigned TagSpec, |
2516 | TagUseKind TUK, |
2517 | const CXXScopeSpec &SS, |
2518 | IdentifierInfo *Name, |
2519 | SourceLocation TagLoc, |
2520 | SourceLocation NameLoc); |
2521 | |
2522 | void ActOnDefs(Scope *S, Decl *TagD, SourceLocation DeclStart, |
2523 | IdentifierInfo *ClassName, |
2524 | SmallVectorImpl<Decl *> &Decls); |
2525 | Decl *ActOnField(Scope *S, Decl *TagD, SourceLocation DeclStart, |
2526 | Declarator &D, Expr *BitfieldWidth); |
2527 | |
2528 | FieldDecl *HandleField(Scope *S, RecordDecl *TagD, SourceLocation DeclStart, |
2529 | Declarator &D, Expr *BitfieldWidth, |
2530 | InClassInitStyle InitStyle, |
2531 | AccessSpecifier AS); |
2532 | MSPropertyDecl *HandleMSProperty(Scope *S, RecordDecl *TagD, |
2533 | SourceLocation DeclStart, Declarator &D, |
2534 | Expr *BitfieldWidth, |
2535 | InClassInitStyle InitStyle, |
2536 | AccessSpecifier AS, |
2537 | const ParsedAttr &MSPropertyAttr); |
2538 | |
2539 | FieldDecl *CheckFieldDecl(DeclarationName Name, QualType T, |
2540 | TypeSourceInfo *TInfo, |
2541 | RecordDecl *Record, SourceLocation Loc, |
2542 | bool Mutable, Expr *BitfieldWidth, |
2543 | InClassInitStyle InitStyle, |
2544 | SourceLocation TSSL, |
2545 | AccessSpecifier AS, NamedDecl *PrevDecl, |
2546 | Declarator *D = nullptr); |
2547 | |
2548 | bool CheckNontrivialField(FieldDecl *FD); |
2549 | void DiagnoseNontrivial(const CXXRecordDecl *Record, CXXSpecialMember CSM); |
2550 | |
2551 | enum TrivialABIHandling { |
2552 | /// The triviality of a method unaffected by "trivial_abi". |
2553 | TAH_IgnoreTrivialABI, |
2554 | |
2555 | /// The triviality of a method affected by "trivial_abi". |
2556 | TAH_ConsiderTrivialABI |
2557 | }; |
2558 | |
2559 | bool SpecialMemberIsTrivial(CXXMethodDecl *MD, CXXSpecialMember CSM, |
2560 | TrivialABIHandling TAH = TAH_IgnoreTrivialABI, |
2561 | bool Diagnose = false); |
2562 | |
2563 | /// For a defaulted function, the kind of defaulted function that it is. |
2564 | class DefaultedFunctionKind { |
2565 | CXXSpecialMember SpecialMember : 8; |
2566 | DefaultedComparisonKind Comparison : 8; |
2567 | |
2568 | public: |
2569 | DefaultedFunctionKind() |
2570 | : SpecialMember(CXXInvalid), Comparison(DefaultedComparisonKind::None) { |
2571 | } |
2572 | DefaultedFunctionKind(CXXSpecialMember CSM) |
2573 | : SpecialMember(CSM), Comparison(DefaultedComparisonKind::None) {} |
2574 | DefaultedFunctionKind(DefaultedComparisonKind Comp) |
2575 | : SpecialMember(CXXInvalid), Comparison(Comp) {} |
2576 | |
2577 | bool isSpecialMember() const { return SpecialMember != CXXInvalid; } |
2578 | bool isComparison() const { |
2579 | return Comparison != DefaultedComparisonKind::None; |
2580 | } |
2581 | |
2582 | explicit operator bool() const { |
2583 | return isSpecialMember() || isComparison(); |
2584 | } |
2585 | |
2586 | CXXSpecialMember asSpecialMember() const { return SpecialMember; } |
2587 | DefaultedComparisonKind asComparison() const { return Comparison; } |
2588 | |
2589 | /// Get the index of this function kind for use in diagnostics. |
2590 | unsigned getDiagnosticIndex() const { |
2591 | static_assert(CXXInvalid > CXXDestructor, |
2592 | "invalid should have highest index"); |
2593 | static_assert((unsigned)DefaultedComparisonKind::None == 0, |
2594 | "none should be equal to zero"); |
2595 | return SpecialMember + (unsigned)Comparison; |
2596 | } |
2597 | }; |
2598 | |
2599 | DefaultedFunctionKind getDefaultedFunctionKind(const FunctionDecl *FD); |
2600 | |
2601 | CXXSpecialMember getSpecialMember(const CXXMethodDecl *MD) { |
2602 | return getDefaultedFunctionKind(MD).asSpecialMember(); |
2603 | } |
2604 | DefaultedComparisonKind getDefaultedComparisonKind(const FunctionDecl *FD) { |
2605 | return getDefaultedFunctionKind(FD).asComparison(); |
2606 | } |
2607 | |
2608 | void ActOnLastBitfield(SourceLocation DeclStart, |
2609 | SmallVectorImpl<Decl *> &AllIvarDecls); |
2610 | Decl *ActOnIvar(Scope *S, SourceLocation DeclStart, |
2611 | Declarator &D, Expr *BitfieldWidth, |
2612 | tok::ObjCKeywordKind visibility); |
2613 | |
2614 | // This is used for both record definitions and ObjC interface declarations. |
2615 | void ActOnFields(Scope *S, SourceLocation RecLoc, Decl *TagDecl, |
2616 | ArrayRef<Decl *> Fields, SourceLocation LBrac, |
2617 | SourceLocation RBrac, const ParsedAttributesView &AttrList); |
2618 | |
2619 | /// ActOnTagStartDefinition - Invoked when we have entered the |
2620 | /// scope of a tag's definition (e.g., for an enumeration, class, |
2621 | /// struct, or union). |
2622 | void ActOnTagStartDefinition(Scope *S, Decl *TagDecl); |
2623 | |
2624 | /// Perform ODR-like check for C/ObjC when merging tag types from modules. |
2625 | /// Differently from C++, actually parse the body and reject / error out |
2626 | /// in case of a structural mismatch. |
2627 | bool ActOnDuplicateDefinition(DeclSpec &DS, Decl *Prev, |
2628 | SkipBodyInfo &SkipBody); |
2629 | |
2630 | typedef void *SkippedDefinitionContext; |
2631 | |
2632 | /// Invoked when we enter a tag definition that we're skipping. |
2633 | SkippedDefinitionContext ActOnTagStartSkippedDefinition(Scope *S, Decl *TD); |
2634 | |
2635 | Decl *ActOnObjCContainerStartDefinition(Decl *IDecl); |
2636 | |
2637 | /// ActOnStartCXXMemberDeclarations - Invoked when we have parsed a |
2638 | /// C++ record definition's base-specifiers clause and are starting its |
2639 | /// member declarations. |
2640 | void ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagDecl, |
2641 | SourceLocation FinalLoc, |
2642 | bool IsFinalSpelledSealed, |
2643 | SourceLocation LBraceLoc); |
2644 | |
2645 | /// ActOnTagFinishDefinition - Invoked once we have finished parsing |
2646 | /// the definition of a tag (enumeration, class, struct, or union). |
2647 | void ActOnTagFinishDefinition(Scope *S, Decl *TagDecl, |
2648 | SourceRange BraceRange); |
2649 | |
2650 | void ActOnTagFinishSkippedDefinition(SkippedDefinitionContext Context); |
2651 | |
2652 | void ActOnObjCContainerFinishDefinition(); |
2653 | |
2654 | /// Invoked when we must temporarily exit the objective-c container |
2655 | /// scope for parsing/looking-up C constructs. |
2656 | /// |
2657 | /// Must be followed by a call to \see ActOnObjCReenterContainerContext |
2658 | void ActOnObjCTemporaryExitContainerContext(DeclContext *DC); |
2659 | void ActOnObjCReenterContainerContext(DeclContext *DC); |
2660 | |
2661 | /// ActOnTagDefinitionError - Invoked when there was an unrecoverable |
2662 | /// error parsing the definition of a tag. |
2663 | void ActOnTagDefinitionError(Scope *S, Decl *TagDecl); |
2664 | |
2665 | EnumConstantDecl *CheckEnumConstant(EnumDecl *Enum, |
2666 | EnumConstantDecl *LastEnumConst, |
2667 | SourceLocation IdLoc, |
2668 | IdentifierInfo *Id, |
2669 | Expr *val); |
2670 | bool CheckEnumUnderlyingType(TypeSourceInfo *TI); |
2671 | bool CheckEnumRedeclaration(SourceLocation EnumLoc, bool IsScoped, |
2672 | QualType EnumUnderlyingTy, bool IsFixed, |
2673 | const EnumDecl *Prev); |
2674 | |
2675 | /// Determine whether the body of an anonymous enumeration should be skipped. |
2676 | /// \param II The name of the first enumerator. |
2677 | SkipBodyInfo shouldSkipAnonEnumBody(Scope *S, IdentifierInfo *II, |
2678 | SourceLocation IILoc); |
2679 | |
2680 | Decl *ActOnEnumConstant(Scope *S, Decl *EnumDecl, Decl *LastEnumConstant, |
2681 | SourceLocation IdLoc, IdentifierInfo *Id, |
2682 | const ParsedAttributesView &Attrs, |
2683 | SourceLocation EqualLoc, Expr *Val); |
2684 | void ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange, |
2685 | Decl *EnumDecl, ArrayRef<Decl *> Elements, Scope *S, |
2686 | const ParsedAttributesView &Attr); |
2687 | |
2688 | DeclContext *getContainingDC(DeclContext *DC); |
2689 | |
2690 | /// Set the current declaration context until it gets popped. |
2691 | void PushDeclContext(Scope *S, DeclContext *DC); |
2692 | void PopDeclContext(); |
2693 | |
2694 | /// EnterDeclaratorContext - Used when we must lookup names in the context |
2695 | /// of a declarator's nested name specifier. |
2696 | void EnterDeclaratorContext(Scope *S, DeclContext *DC); |
2697 | void ExitDeclaratorContext(Scope *S); |
2698 | |
2699 | /// Push the parameters of D, which must be a function, into scope. |
2700 | void ActOnReenterFunctionContext(Scope* S, Decl* D); |
2701 | void ActOnExitFunctionContext(); |
2702 | |
2703 | DeclContext *getFunctionLevelDeclContext(); |
2704 | |
2705 | /// getCurFunctionDecl - If inside of a function body, this returns a pointer |
2706 | /// to the function decl for the function being parsed. If we're currently |
2707 | /// in a 'block', this returns the containing context. |
2708 | FunctionDecl *getCurFunctionDecl(); |
2709 | |
2710 | /// getCurMethodDecl - If inside of a method body, this returns a pointer to |
2711 | /// the method decl for the method being parsed. If we're currently |
2712 | /// in a 'block', this returns the containing context. |
2713 | ObjCMethodDecl *getCurMethodDecl(); |
2714 | |
2715 | /// getCurFunctionOrMethodDecl - Return the Decl for the current ObjC method |
2716 | /// or C function we're in, otherwise return null. If we're currently |
2717 | /// in a 'block', this returns the containing context. |
2718 | NamedDecl *getCurFunctionOrMethodDecl(); |
2719 | |
2720 | /// Add this decl to the scope shadowed decl chains. |
2721 | void PushOnScopeChains(NamedDecl *D, Scope *S, bool AddToContext = true); |
2722 | |
2723 | /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true |
2724 | /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns |
2725 | /// true if 'D' belongs to the given declaration context. |
2726 | /// |
2727 | /// \param AllowInlineNamespace If \c true, allow the declaration to be in the |
2728 | /// enclosing namespace set of the context, rather than contained |
2729 | /// directly within it. |
2730 | bool isDeclInScope(NamedDecl *D, DeclContext *Ctx, Scope *S = nullptr, |
2731 | bool AllowInlineNamespace = false); |
2732 | |
2733 | /// Finds the scope corresponding to the given decl context, if it |
2734 | /// happens to be an enclosing scope. Otherwise return NULL. |
2735 | static Scope *getScopeForDeclContext(Scope *S, DeclContext *DC); |
2736 | |
2737 | /// Subroutines of ActOnDeclarator(). |
2738 | TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, |
2739 | TypeSourceInfo *TInfo); |
2740 | bool isIncompatibleTypedef(TypeDecl *Old, TypedefNameDecl *New); |
2741 | |
2742 | /// Describes the kind of merge to perform for availability |
2743 | /// attributes (including "deprecated", "unavailable", and "availability"). |
2744 | enum AvailabilityMergeKind { |
2745 | /// Don't merge availability attributes at all. |
2746 | AMK_None, |
2747 | /// Merge availability attributes for a redeclaration, which requires |
2748 | /// an exact match. |
2749 | AMK_Redeclaration, |
2750 | /// Merge availability attributes for an override, which requires |
2751 | /// an exact match or a weakening of constraints. |
2752 | AMK_Override, |
2753 | /// Merge availability attributes for an implementation of |
2754 | /// a protocol requirement. |
2755 | AMK_ProtocolImplementation, |
2756 | }; |
2757 | |
2758 | /// Describes the kind of priority given to an availability attribute. |
2759 | /// |
2760 | /// The sum of priorities deteremines the final priority of the attribute. |
2761 | /// The final priority determines how the attribute will be merged. |
2762 | /// An attribute with a lower priority will always remove higher priority |
2763 | /// attributes for the specified platform when it is being applied. An |
2764 | /// attribute with a higher priority will not be applied if the declaration |
2765 | /// already has an availability attribute with a lower priority for the |
2766 | /// specified platform. The final prirority values are not expected to match |
2767 | /// the values in this enumeration, but instead should be treated as a plain |
2768 | /// integer value. This enumeration just names the priority weights that are |
2769 | /// used to calculate that final vaue. |
2770 | enum AvailabilityPriority : int { |
2771 | /// The availability attribute was specified explicitly next to the |
2772 | /// declaration. |
2773 | AP_Explicit = 0, |
2774 | |
2775 | /// The availability attribute was applied using '#pragma clang attribute'. |
2776 | AP_PragmaClangAttribute = 1, |
2777 | |
2778 | /// The availability attribute for a specific platform was inferred from |
2779 | /// an availability attribute for another platform. |
2780 | AP_InferredFromOtherPlatform = 2 |
2781 | }; |
2782 | |
2783 | /// Attribute merging methods. Return true if a new attribute was added. |
2784 | AvailabilityAttr * |
2785 | mergeAvailabilityAttr(NamedDecl *D, const AttributeCommonInfo &CI, |
2786 | IdentifierInfo *Platform, bool Implicit, |
2787 | VersionTuple Introduced, VersionTuple Deprecated, |
2788 | VersionTuple Obsoleted, bool IsUnavailable, |
2789 | StringRef Message, bool IsStrict, StringRef Replacement, |
2790 | AvailabilityMergeKind AMK, int Priority); |
2791 | TypeVisibilityAttr * |
2792 | mergeTypeVisibilityAttr(Decl *D, const AttributeCommonInfo &CI, |
2793 | TypeVisibilityAttr::VisibilityType Vis); |
2794 | VisibilityAttr *mergeVisibilityAttr(Decl *D, const AttributeCommonInfo &CI, |
2795 | VisibilityAttr::VisibilityType Vis); |
2796 | UuidAttr *mergeUuidAttr(Decl *D, const AttributeCommonInfo &CI, |
2797 | StringRef Uuid); |
2798 | DLLImportAttr *mergeDLLImportAttr(Decl *D, const AttributeCommonInfo &CI); |
2799 | DLLExportAttr *mergeDLLExportAttr(Decl *D, const AttributeCommonInfo &CI); |
2800 | MSInheritanceAttr * |
2801 | mergeMSInheritanceAttr(Decl *D, const AttributeCommonInfo &CI, bool BestCase, |
2802 | MSInheritanceAttr::Spelling SemanticSpelling); |
2803 | FormatAttr *mergeFormatAttr(Decl *D, const AttributeCommonInfo &CI, |
2804 | IdentifierInfo *Format, int FormatIdx, |
2805 | int FirstArg); |
2806 | SectionAttr *mergeSectionAttr(Decl *D, const AttributeCommonInfo &CI, |
2807 | StringRef Name); |
2808 | CodeSegAttr *mergeCodeSegAttr(Decl *D, const AttributeCommonInfo &CI, |
2809 | StringRef Name); |
2810 | AlwaysInlineAttr *mergeAlwaysInlineAttr(Decl *D, |
2811 | const AttributeCommonInfo &CI, |
2812 | const IdentifierInfo *Ident); |
2813 | MinSizeAttr *mergeMinSizeAttr(Decl *D, const AttributeCommonInfo &CI); |
2814 | NoSpeculativeLoadHardeningAttr * |
2815 | mergeNoSpeculativeLoadHardeningAttr(Decl *D, |
2816 | const NoSpeculativeLoadHardeningAttr &AL); |
2817 | SpeculativeLoadHardeningAttr * |
2818 | mergeSpeculativeLoadHardeningAttr(Decl *D, |
2819 | const SpeculativeLoadHardeningAttr &AL); |
2820 | OptimizeNoneAttr *mergeOptimizeNoneAttr(Decl *D, |
2821 | const AttributeCommonInfo &CI); |
2822 | InternalLinkageAttr *mergeInternalLinkageAttr(Decl *D, const ParsedAttr &AL); |
2823 | InternalLinkageAttr *mergeInternalLinkageAttr(Decl *D, |
2824 | const InternalLinkageAttr &AL); |
2825 | CommonAttr *mergeCommonAttr(Decl *D, const ParsedAttr &AL); |
2826 | CommonAttr *mergeCommonAttr(Decl *D, const CommonAttr &AL); |
2827 | |
2828 | void mergeDeclAttributes(NamedDecl *New, Decl *Old, |
2829 | AvailabilityMergeKind AMK = AMK_Redeclaration); |
2830 | void MergeTypedefNameDecl(Scope *S, TypedefNameDecl *New, |
2831 | LookupResult &OldDecls); |
2832 | bool MergeFunctionDecl(FunctionDecl *New, NamedDecl *&Old, Scope *S, |
2833 | bool MergeTypeWithOld); |
2834 | bool MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old, |
2835 | Scope *S, bool MergeTypeWithOld); |
2836 | void mergeObjCMethodDecls(ObjCMethodDecl *New, ObjCMethodDecl *Old); |
2837 | void MergeVarDecl(VarDecl *New, LookupResult &Previous); |
2838 | void MergeVarDeclTypes(VarDecl *New, VarDecl *Old, bool MergeTypeWithOld); |
2839 | void MergeVarDeclExceptionSpecs(VarDecl *New, VarDecl *Old); |
2840 | bool checkVarDeclRedefinition(VarDecl *OldDefn, VarDecl *NewDefn); |
2841 | void notePreviousDefinition(const NamedDecl *Old, SourceLocation New); |
2842 | bool MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old, Scope *S); |
2843 | |
2844 | // AssignmentAction - This is used by all the assignment diagnostic functions |
2845 | // to represent what is actually causing the operation |
2846 | enum AssignmentAction { |
2847 | AA_Assigning, |
2848 | AA_Passing, |
2849 | AA_Returning, |
2850 | AA_Converting, |
2851 | AA_Initializing, |
2852 | AA_Sending, |
2853 | AA_Casting, |
2854 | AA_Passing_CFAudited |
2855 | }; |
2856 | |
2857 | /// C++ Overloading. |
2858 | enum OverloadKind { |
2859 | /// This is a legitimate overload: the existing declarations are |
2860 | /// functions or function templates with different signatures. |
2861 | Ovl_Overload, |
2862 | |
2863 | /// This is not an overload because the signature exactly matches |
2864 | /// an existing declaration. |
2865 | Ovl_Match, |
2866 | |
2867 | /// This is not an overload because the lookup results contain a |
2868 | /// non-function. |
2869 | Ovl_NonFunction |
2870 | }; |
2871 | OverloadKind CheckOverload(Scope *S, |
2872 | FunctionDecl *New, |
2873 | const LookupResult &OldDecls, |
2874 | NamedDecl *&OldDecl, |
2875 | bool IsForUsingDecl); |
2876 | bool IsOverload(FunctionDecl *New, FunctionDecl *Old, bool IsForUsingDecl, |
2877 | bool ConsiderCudaAttrs = true); |
2878 | |
2879 | ImplicitConversionSequence |
2880 | TryImplicitConversion(Expr *From, QualType ToType, |
2881 | bool SuppressUserConversions, |
2882 | bool AllowExplicit, |
2883 | bool InOverloadResolution, |
2884 | bool CStyle, |
2885 | bool AllowObjCWritebackConversion); |
2886 | |
2887 | bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType); |
2888 | bool IsFloatingPointPromotion(QualType FromType, QualType ToType); |
2889 | bool IsComplexPromotion(QualType FromType, QualType ToType); |
2890 | bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2891 | bool InOverloadResolution, |
2892 | QualType& ConvertedType, bool &IncompatibleObjC); |
2893 | bool isObjCPointerConversion(QualType FromType, QualType ToType, |
2894 | QualType& ConvertedType, bool &IncompatibleObjC); |
2895 | bool isObjCWritebackConversion(QualType FromType, QualType ToType, |
2896 | QualType &ConvertedType); |
2897 | bool IsBlockPointerConversion(QualType FromType, QualType ToType, |
2898 | QualType& ConvertedType); |
2899 | bool FunctionParamTypesAreEqual(const FunctionProtoType *OldType, |
2900 | const FunctionProtoType *NewType, |
2901 | unsigned *ArgPos = nullptr); |
2902 | void HandleFunctionTypeMismatch(PartialDiagnostic &PDiag, |
2903 | QualType FromType, QualType ToType); |
2904 | |
2905 | void maybeExtendBlockObject(ExprResult &E); |
2906 | CastKind PrepareCastToObjCObjectPointer(ExprResult &E); |
2907 | bool CheckPointerConversion(Expr *From, QualType ToType, |
2908 | CastKind &Kind, |
2909 | CXXCastPath& BasePath, |
2910 | bool IgnoreBaseAccess, |
2911 | bool Diagnose = true); |
2912 | bool IsMemberPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2913 | bool InOverloadResolution, |
2914 | QualType &ConvertedType); |
2915 | bool CheckMemberPointerConversion(Expr *From, QualType ToType, |
2916 | CastKind &Kind, |
2917 | CXXCastPath &BasePath, |
2918 | bool IgnoreBaseAccess); |
2919 | bool IsQualificationConversion(QualType FromType, QualType ToType, |
2920 | bool CStyle, bool &ObjCLifetimeConversion); |
2921 | bool IsFunctionConversion(QualType FromType, QualType ToType, |
2922 | QualType &ResultTy); |
2923 | bool DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType); |
2924 | bool isSameOrCompatibleFunctionType(CanQualType Param, CanQualType Arg); |
2925 | |
2926 | ExprResult PerformMoveOrCopyInitialization(const InitializedEntity &Entity, |
2927 | const VarDecl *NRVOCandidate, |
2928 | QualType ResultType, |
2929 | Expr *Value, |
2930 | bool AllowNRVO = true); |
2931 | |
2932 | bool CanPerformAggregateInitializationForOverloadResolution( |
2933 | const InitializedEntity &Entity, InitListExpr *From); |
2934 | |
2935 | bool CanPerformCopyInitialization(const InitializedEntity &Entity, |
2936 | ExprResult Init); |
2937 | ExprResult PerformCopyInitialization(const InitializedEntity &Entity, |
2938 | SourceLocation EqualLoc, |
2939 | ExprResult Init, |
2940 | bool TopLevelOfInitList = false, |
2941 | bool AllowExplicit = false); |
2942 | ExprResult PerformObjectArgumentInitialization(Expr *From, |
2943 | NestedNameSpecifier *Qualifier, |
2944 | NamedDecl *FoundDecl, |
2945 | CXXMethodDecl *Method); |
2946 | |
2947 | /// Check that the lifetime of the initializer (and its subobjects) is |
2948 | /// sufficient for initializing the entity, and perform lifetime extension |
2949 | /// (when permitted) if not. |
2950 | void checkInitializerLifetime(const InitializedEntity &Entity, Expr *Init); |
2951 | |
2952 | ExprResult PerformContextuallyConvertToBool(Expr *From); |
2953 | ExprResult PerformContextuallyConvertToObjCPointer(Expr *From); |
2954 | |
2955 | /// Contexts in which a converted constant expression is required. |
2956 | enum CCEKind { |
2957 | CCEK_CaseValue, ///< Expression in a case label. |
2958 | CCEK_Enumerator, ///< Enumerator value with fixed underlying type. |
2959 | CCEK_TemplateArg, ///< Value of a non-type template parameter. |
2960 | CCEK_NewExpr, ///< Constant expression in a noptr-new-declarator. |
2961 | CCEK_ConstexprIf, ///< Condition in a constexpr if statement. |
2962 | CCEK_ExplicitBool ///< Condition in an explicit(bool) specifier. |
2963 | }; |
2964 | ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, |
2965 | llvm::APSInt &Value, CCEKind CCE); |
2966 | ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, |
2967 | APValue &Value, CCEKind CCE); |
2968 | |
2969 | /// Abstract base class used to perform a contextual implicit |
2970 | /// conversion from an expression to any type passing a filter. |
2971 | class ContextualImplicitConverter { |
2972 | public: |
2973 | bool Suppress; |
2974 | bool SuppressConversion; |
2975 | |
2976 | ContextualImplicitConverter(bool Suppress = false, |
2977 | bool SuppressConversion = false) |
2978 | : Suppress(Suppress), SuppressConversion(SuppressConversion) {} |
2979 | |
2980 | /// Determine whether the specified type is a valid destination type |
2981 | /// for this conversion. |
2982 | virtual bool match(QualType T) = 0; |
2983 | |
2984 | /// Emits a diagnostic complaining that the expression does not have |
2985 | /// integral or enumeration type. |
2986 | virtual SemaDiagnosticBuilder |
2987 | diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) = 0; |
2988 | |
2989 | /// Emits a diagnostic when the expression has incomplete class type. |
2990 | virtual SemaDiagnosticBuilder |
2991 | diagnoseIncomplete(Sema &S, SourceLocation Loc, QualType T) = 0; |
2992 | |
2993 | /// Emits a diagnostic when the only matching conversion function |
2994 | /// is explicit. |
2995 | virtual SemaDiagnosticBuilder diagnoseExplicitConv( |
2996 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0; |
2997 | |
2998 | /// Emits a note for the explicit conversion function. |
2999 | virtual SemaDiagnosticBuilder |
3000 | noteExplicitConv(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0; |
3001 | |
3002 | /// Emits a diagnostic when there are multiple possible conversion |
3003 | /// functions. |
3004 | virtual SemaDiagnosticBuilder |
3005 | diagnoseAmbiguous(Sema &S, SourceLocation Loc, QualType T) = 0; |
3006 | |
3007 | /// Emits a note for one of the candidate conversions. |
3008 | virtual SemaDiagnosticBuilder |
3009 | noteAmbiguous(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0; |
3010 | |
3011 | /// Emits a diagnostic when we picked a conversion function |
3012 | /// (for cases when we are not allowed to pick a conversion function). |
3013 | virtual SemaDiagnosticBuilder diagnoseConversion( |
3014 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0; |
3015 | |
3016 | virtual ~ContextualImplicitConverter() {} |
3017 | }; |
3018 | |
3019 | class ICEConvertDiagnoser : public ContextualImplicitConverter { |
3020 | bool AllowScopedEnumerations; |
3021 | |
3022 | public: |
3023 | ICEConvertDiagnoser(bool AllowScopedEnumerations, |
3024 | bool Suppress, bool SuppressConversion) |
3025 | : ContextualImplicitConverter(Suppress, SuppressConversion), |
3026 | AllowScopedEnumerations(AllowScopedEnumerations) {} |
3027 | |
3028 | /// Match an integral or (possibly scoped) enumeration type. |
3029 | bool match(QualType T) override; |
3030 | |
3031 | SemaDiagnosticBuilder |
3032 | diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) override { |
3033 | return diagnoseNotInt(S, Loc, T); |
3034 | } |
3035 | |
3036 | /// Emits a diagnostic complaining that the expression does not have |
3037 | /// integral or enumeration type. |
3038 | virtual SemaDiagnosticBuilder |
3039 | diagnoseNotInt(Sema &S, SourceLocation Loc, QualType T) = 0; |
3040 | }; |
3041 | |
3042 | /// Perform a contextual implicit conversion. |
3043 | ExprResult PerformContextualImplicitConversion( |
3044 | SourceLocation Loc, Expr *FromE, ContextualImplicitConverter &Converter); |
3045 | |
3046 | |
3047 | enum ObjCSubscriptKind { |
3048 | OS_Array, |
3049 | OS_Dictionary, |
3050 | OS_Error |
3051 | }; |
3052 | ObjCSubscriptKind CheckSubscriptingKind(Expr *FromE); |
3053 | |
3054 | // Note that LK_String is intentionally after the other literals, as |
3055 | // this is used for diagnostics logic. |
3056 | enum ObjCLiteralKind { |
3057 | LK_Array, |
3058 | LK_Dictionary, |
3059 | LK_Numeric, |
3060 | LK_Boxed, |
3061 | LK_String, |
3062 | LK_Block, |
3063 | LK_None |
3064 | }; |
3065 | ObjCLiteralKind CheckLiteralKind(Expr *FromE); |
3066 | |
3067 | ExprResult PerformObjectMemberConversion(Expr *From, |
3068 | NestedNameSpecifier *Qualifier, |
3069 | NamedDecl *FoundDecl, |
3070 | NamedDecl *Member); |
3071 | |
3072 | // Members have to be NamespaceDecl* or TranslationUnitDecl*. |
3073 | // TODO: make this is a typesafe union. |
3074 | typedef llvm::SmallSetVector<DeclContext *, 16> AssociatedNamespaceSet; |
3075 | typedef llvm::SmallSetVector<CXXRecordDecl *, 16> AssociatedClassSet; |
3076 | |
3077 | using ADLCallKind = CallExpr::ADLCallKind; |
3078 | |
3079 | void AddOverloadCandidate(FunctionDecl *Function, DeclAccessPair FoundDecl, |
3080 | ArrayRef<Expr *> Args, |
3081 | OverloadCandidateSet &CandidateSet, |
3082 | bool SuppressUserConversions = false, |
3083 | bool PartialOverloading = false, |
3084 | bool AllowExplicit = true, |
3085 | bool AllowExplicitConversion = false, |
3086 | ADLCallKind IsADLCandidate = ADLCallKind::NotADL, |
3087 | ConversionSequenceList EarlyConversions = None, |
3088 | OverloadCandidateParamOrder PO = {}); |
3089 | void AddFunctionCandidates(const UnresolvedSetImpl &Functions, |
3090 | ArrayRef<Expr *> Args, |
3091 | OverloadCandidateSet &CandidateSet, |
3092 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr, |
3093 | bool SuppressUserConversions = false, |
3094 | bool PartialOverloading = false, |
3095 | bool FirstArgumentIsBase = false); |
3096 | void AddMethodCandidate(DeclAccessPair FoundDecl, |
3097 | QualType ObjectType, |
3098 | Expr::Classification ObjectClassification, |
3099 | ArrayRef<Expr *> Args, |
3100 | OverloadCandidateSet& CandidateSet, |
3101 | bool SuppressUserConversion = false, |
3102 | OverloadCandidateParamOrder PO = {}); |
3103 | void AddMethodCandidate(CXXMethodDecl *Method, |
3104 | DeclAccessPair FoundDecl, |
3105 | CXXRecordDecl *ActingContext, QualType ObjectType, |
3106 | Expr::Classification ObjectClassification, |
3107 | ArrayRef<Expr *> Args, |
3108 | OverloadCandidateSet& CandidateSet, |
3109 | bool SuppressUserConversions = false, |
3110 | bool PartialOverloading = false, |
3111 | ConversionSequenceList EarlyConversions = None, |
3112 | OverloadCandidateParamOrder PO = {}); |
3113 | void AddMethodTemplateCandidate(FunctionTemplateDecl *MethodTmpl, |
3114 | DeclAccessPair FoundDecl, |
3115 | CXXRecordDecl *ActingContext, |
3116 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
3117 | QualType ObjectType, |
3118 | Expr::Classification ObjectClassification, |
3119 | ArrayRef<Expr *> Args, |
3120 | OverloadCandidateSet& CandidateSet, |
3121 | bool SuppressUserConversions = false, |
3122 | bool PartialOverloading = false, |
3123 | OverloadCandidateParamOrder PO = {}); |
3124 | void AddTemplateOverloadCandidate( |
3125 | FunctionTemplateDecl *FunctionTemplate, DeclAccessPair FoundDecl, |
3126 | TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef<Expr *> Args, |
3127 | OverloadCandidateSet &CandidateSet, bool SuppressUserConversions = false, |
3128 | bool PartialOverloading = false, bool AllowExplicit = true, |
3129 | ADLCallKind IsADLCandidate = ADLCallKind::NotADL, |
3130 | OverloadCandidateParamOrder PO = {}); |
3131 | bool CheckNonDependentConversions( |
3132 | FunctionTemplateDecl *FunctionTemplate, ArrayRef<QualType> ParamTypes, |
3133 | ArrayRef<Expr *> Args, OverloadCandidateSet &CandidateSet, |
3134 | ConversionSequenceList &Conversions, bool SuppressUserConversions, |
3135 | CXXRecordDecl *ActingContext = nullptr, QualType ObjectType = QualType(), |
3136 | Expr::Classification ObjectClassification = {}, |
3137 | OverloadCandidateParamOrder PO = {}); |
3138 | void AddConversionCandidate( |
3139 | CXXConversionDecl *Conversion, DeclAccessPair FoundDecl, |
3140 | CXXRecordDecl *ActingContext, Expr *From, QualType ToType, |
3141 | OverloadCandidateSet &CandidateSet, bool AllowObjCConversionOnExplicit, |
3142 | bool AllowExplicit, bool AllowResultConversion = true); |
3143 | void AddTemplateConversionCandidate( |
3144 | FunctionTemplateDecl *FunctionTemplate, DeclAccessPair FoundDecl, |
3145 | CXXRecordDecl *ActingContext, Expr *From, QualType ToType, |
3146 | OverloadCandidateSet &CandidateSet, bool AllowObjCConversionOnExplicit, |
3147 | bool AllowExplicit, bool AllowResultConversion = true); |
3148 | void AddSurrogateCandidate(CXXConversionDecl *Conversion, |
3149 | DeclAccessPair FoundDecl, |
3150 | CXXRecordDecl *ActingContext, |
3151 | const FunctionProtoType *Proto, |
3152 | Expr *Object, ArrayRef<Expr *> Args, |
3153 | OverloadCandidateSet& CandidateSet); |
3154 | void AddNonMemberOperatorCandidates( |
3155 | const UnresolvedSetImpl &Functions, ArrayRef<Expr *> Args, |
3156 | OverloadCandidateSet &CandidateSet, |
3157 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr); |
3158 | void AddMemberOperatorCandidates(OverloadedOperatorKind Op, |
3159 | SourceLocation OpLoc, ArrayRef<Expr *> Args, |
3160 | OverloadCandidateSet &CandidateSet, |
3161 | OverloadCandidateParamOrder PO = {}); |
3162 | void AddBuiltinCandidate(QualType *ParamTys, ArrayRef<Expr *> Args, |
3163 | OverloadCandidateSet& CandidateSet, |
3164 | bool IsAssignmentOperator = false, |
3165 | unsigned NumContextualBoolArguments = 0); |
3166 | void AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, |
3167 | SourceLocation OpLoc, ArrayRef<Expr *> Args, |
3168 | OverloadCandidateSet& CandidateSet); |
3169 | void AddArgumentDependentLookupCandidates(DeclarationName Name, |
3170 | SourceLocation Loc, |
3171 | ArrayRef<Expr *> Args, |
3172 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
3173 | OverloadCandidateSet& CandidateSet, |
3174 | bool PartialOverloading = false); |
3175 | |
3176 | // Emit as a 'note' the specific overload candidate |
3177 | void NoteOverloadCandidate( |
3178 | NamedDecl *Found, FunctionDecl *Fn, |
3179 | OverloadCandidateRewriteKind RewriteKind = OverloadCandidateRewriteKind(), |
3180 | QualType DestType = QualType(), bool TakingAddress = false); |
3181 | |
3182 | // Emit as a series of 'note's all template and non-templates identified by |
3183 | // the expression Expr |
3184 | void NoteAllOverloadCandidates(Expr *E, QualType DestType = QualType(), |
3185 | bool TakingAddress = false); |
3186 | |
3187 | /// Check the enable_if expressions on the given function. Returns the first |
3188 | /// failing attribute, or NULL if they were all successful. |
3189 | EnableIfAttr *CheckEnableIf(FunctionDecl *Function, ArrayRef<Expr *> Args, |
3190 | bool MissingImplicitThis = false); |
3191 | |
3192 | /// Find the failed Boolean condition within a given Boolean |
3193 | /// constant expression, and describe it with a string. |
3194 | std::pair<Expr *, std::string> findFailedBooleanCondition(Expr *Cond); |
3195 | |
3196 | /// Emit diagnostics for the diagnose_if attributes on Function, ignoring any |
3197 | /// non-ArgDependent DiagnoseIfAttrs. |
3198 | /// |
3199 | /// Argument-dependent diagnose_if attributes should be checked each time a |
3200 | /// function is used as a direct callee of a function call. |
3201 | /// |
3202 | /// Returns true if any errors were emitted. |
3203 | bool diagnoseArgDependentDiagnoseIfAttrs(const FunctionDecl *Function, |
3204 | const Expr *ThisArg, |
3205 | ArrayRef<const Expr *> Args, |
3206 | SourceLocation Loc); |
3207 | |
3208 | /// Emit diagnostics for the diagnose_if attributes on Function, ignoring any |
3209 | /// ArgDependent DiagnoseIfAttrs. |
3210 | /// |
3211 | /// Argument-independent diagnose_if attributes should be checked on every use |
3212 | /// of a function. |
3213 | /// |
3214 | /// Returns true if any errors were emitted. |
3215 | bool diagnoseArgIndependentDiagnoseIfAttrs(const NamedDecl *ND, |
3216 | SourceLocation Loc); |
3217 | |
3218 | /// Returns whether the given function's address can be taken or not, |
3219 | /// optionally emitting a diagnostic if the address can't be taken. |
3220 | /// |
3221 | /// Returns false if taking the address of the function is illegal. |
3222 | bool checkAddressOfFunctionIsAvailable(const FunctionDecl *Function, |
3223 | bool Complain = false, |
3224 | SourceLocation Loc = SourceLocation()); |
3225 | |
3226 | // [PossiblyAFunctionType] --> [Return] |
3227 | // NonFunctionType --> NonFunctionType |
3228 | // R (A) --> R(A) |
3229 | // R (*)(A) --> R (A) |
3230 | // R (&)(A) --> R (A) |
3231 | // R (S::*)(A) --> R (A) |
3232 | QualType ExtractUnqualifiedFunctionType(QualType PossiblyAFunctionType); |
3233 | |
3234 | FunctionDecl * |
3235 | ResolveAddressOfOverloadedFunction(Expr *AddressOfExpr, |
3236 | QualType TargetType, |
3237 | bool Complain, |
3238 | DeclAccessPair &Found, |
3239 | bool *pHadMultipleCandidates = nullptr); |
3240 | |
3241 | FunctionDecl * |
3242 | resolveAddressOfOnlyViableOverloadCandidate(Expr *E, |
3243 | DeclAccessPair &FoundResult); |
3244 | |
3245 | bool resolveAndFixAddressOfOnlyViableOverloadCandidate( |
3246 | ExprResult &SrcExpr, bool DoFunctionPointerConversion = false); |
3247 | |
3248 | FunctionDecl * |
3249 | ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, |
3250 | bool Complain = false, |
3251 | DeclAccessPair *Found = nullptr); |
3252 | |
3253 | bool ResolveAndFixSingleFunctionTemplateSpecialization( |
3254 | ExprResult &SrcExpr, |
3255 | bool DoFunctionPointerConverion = false, |
3256 | bool Complain = false, |
3257 | SourceRange OpRangeForComplaining = SourceRange(), |
3258 | QualType DestTypeForComplaining = QualType(), |
3259 | unsigned DiagIDForComplaining = 0); |
3260 | |
3261 | |
3262 | Expr *FixOverloadedFunctionReference(Expr *E, |
3263 | DeclAccessPair FoundDecl, |
3264 | FunctionDecl *Fn); |
3265 | ExprResult FixOverloadedFunctionReference(ExprResult, |
3266 | DeclAccessPair FoundDecl, |
3267 | FunctionDecl *Fn); |
3268 | |
3269 | void AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE, |
3270 | ArrayRef<Expr *> Args, |
3271 | OverloadCandidateSet &CandidateSet, |
3272 | bool PartialOverloading = false); |
3273 | |
3274 | // An enum used to represent the different possible results of building a |
3275 | // range-based for loop. |
3276 | enum ForRangeStatus { |
3277 | FRS_Success, |
3278 | FRS_NoViableFunction, |
3279 | FRS_DiagnosticIssued |
3280 | }; |
3281 | |
3282 | ForRangeStatus BuildForRangeBeginEndCall(SourceLocation Loc, |
3283 | SourceLocation RangeLoc, |
3284 | const DeclarationNameInfo &NameInfo, |
3285 | LookupResult &MemberLookup, |
3286 | OverloadCandidateSet *CandidateSet, |
3287 | Expr *Range, ExprResult *CallExpr); |
3288 | |
3289 | ExprResult BuildOverloadedCallExpr(Scope *S, Expr *Fn, |
3290 | UnresolvedLookupExpr *ULE, |
3291 | SourceLocation LParenLoc, |
3292 | MultiExprArg Args, |
3293 | SourceLocation RParenLoc, |
3294 | Expr *ExecConfig, |
3295 | bool AllowTypoCorrection=true, |
3296 | bool CalleesAddressIsTaken=false); |
3297 | |
3298 | bool buildOverloadedCallSet(Scope *S, Expr *Fn, UnresolvedLookupExpr *ULE, |
3299 | MultiExprArg Args, SourceLocation RParenLoc, |
3300 | OverloadCandidateSet *CandidateSet, |
3301 | ExprResult *Result); |
3302 | |
3303 | ExprResult CreateOverloadedUnaryOp(SourceLocation OpLoc, |
3304 | UnaryOperatorKind Opc, |
3305 | const UnresolvedSetImpl &Fns, |
3306 | Expr *input, bool RequiresADL = true); |
3307 | |
3308 | ExprResult CreateOverloadedBinOp(SourceLocation OpLoc, |
3309 | BinaryOperatorKind Opc, |
3310 | const UnresolvedSetImpl &Fns, |
3311 | Expr *LHS, Expr *RHS, |
3312 | bool RequiresADL = true, |
3313 | bool AllowRewrittenCandidates = true); |
3314 | |
3315 | ExprResult CreateOverloadedArraySubscriptExpr(SourceLocation LLoc, |
3316 | SourceLocation RLoc, |
3317 | Expr *Base,Expr *Idx); |
3318 | |
3319 | ExprResult |
3320 | BuildCallToMemberFunction(Scope *S, Expr *MemExpr, |
3321 | SourceLocation LParenLoc, |
3322 | MultiExprArg Args, |
3323 | SourceLocation RParenLoc); |
3324 | ExprResult |
3325 | BuildCallToObjectOfClassType(Scope *S, Expr *Object, SourceLocation LParenLoc, |
3326 | MultiExprArg Args, |
3327 | SourceLocation RParenLoc); |
3328 | |
3329 | ExprResult BuildOverloadedArrowExpr(Scope *S, Expr *Base, |
3330 | SourceLocation OpLoc, |
3331 | bool *NoArrowOperatorFound = nullptr); |
3332 | |
3333 | /// CheckCallReturnType - Checks that a call expression's return type is |
3334 | /// complete. Returns true on failure. The location passed in is the location |
3335 | /// that best represents the call. |
3336 | bool CheckCallReturnType(QualType ReturnType, SourceLocation Loc, |
3337 | CallExpr *CE, FunctionDecl *FD); |
3338 | |
3339 | /// Helpers for dealing with blocks and functions. |
3340 | bool CheckParmsForFunctionDef(ArrayRef<ParmVarDecl *> Parameters, |
3341 | bool CheckParameterNames); |
3342 | void CheckCXXDefaultArguments(FunctionDecl *FD); |
3343 | void CheckExtraCXXDefaultArguments(Declarator &D); |
3344 | Scope *getNonFieldDeclScope(Scope *S); |
3345 | |
3346 | /// \name Name lookup |
3347 | /// |
3348 | /// These routines provide name lookup that is used during semantic |
3349 | /// analysis to resolve the various kinds of names (identifiers, |
3350 | /// overloaded operator names, constructor names, etc.) into zero or |
3351 | /// more declarations within a particular scope. The major entry |
3352 | /// points are LookupName, which performs unqualified name lookup, |
3353 | /// and LookupQualifiedName, which performs qualified name lookup. |
3354 | /// |
3355 | /// All name lookup is performed based on some specific criteria, |
3356 | /// which specify what names will be visible to name lookup and how |
3357 | /// far name lookup should work. These criteria are important both |
3358 | /// for capturing language semantics (certain lookups will ignore |
3359 | /// certain names, for example) and for performance, since name |
3360 | /// lookup is often a bottleneck in the compilation of C++. Name |
3361 | /// lookup criteria is specified via the LookupCriteria enumeration. |
3362 | /// |
3363 | /// The results of name lookup can vary based on the kind of name |
3364 | /// lookup performed, the current language, and the translation |
3365 | /// unit. In C, for example, name lookup will either return nothing |
3366 | /// (no entity found) or a single declaration. In C++, name lookup |
3367 | /// can additionally refer to a set of overloaded functions or |
3368 | /// result in an ambiguity. All of the possible results of name |
3369 | /// lookup are captured by the LookupResult class, which provides |
3370 | /// the ability to distinguish among them. |
3371 | //@{ |
3372 | |
3373 | /// Describes the kind of name lookup to perform. |
3374 | enum LookupNameKind { |
3375 | /// Ordinary name lookup, which finds ordinary names (functions, |
3376 | /// variables, typedefs, etc.) in C and most kinds of names |
3377 | /// (functions, variables, members, types, etc.) in C++. |
3378 | LookupOrdinaryName = 0, |
3379 | /// Tag name lookup, which finds the names of enums, classes, |
3380 | /// structs, and unions. |
3381 | LookupTagName, |
3382 | /// Label name lookup. |
3383 | LookupLabel, |
3384 | /// Member name lookup, which finds the names of |
3385 | /// class/struct/union members. |
3386 | LookupMemberName, |
3387 | /// Look up of an operator name (e.g., operator+) for use with |
3388 | /// operator overloading. This lookup is similar to ordinary name |
3389 | /// lookup, but will ignore any declarations that are class members. |
3390 | LookupOperatorName, |
3391 | /// Look up of a name that precedes the '::' scope resolution |
3392 | /// operator in C++. This lookup completely ignores operator, object, |
3393 | /// function, and enumerator names (C++ [basic.lookup.qual]p1). |
3394 | LookupNestedNameSpecifierName, |
3395 | /// Look up a namespace name within a C++ using directive or |
3396 | /// namespace alias definition, ignoring non-namespace names (C++ |
3397 | /// [basic.lookup.udir]p1). |
3398 | LookupNamespaceName, |
3399 | /// Look up all declarations in a scope with the given name, |
3400 | /// including resolved using declarations. This is appropriate |
3401 | /// for checking redeclarations for a using declaration. |
3402 | LookupUsingDeclName, |
3403 | /// Look up an ordinary name that is going to be redeclared as a |
3404 | /// name with linkage. This lookup ignores any declarations that |
3405 | /// are outside of the current scope unless they have linkage. See |
3406 | /// C99 6.2.2p4-5 and C++ [basic.link]p6. |
3407 | LookupRedeclarationWithLinkage, |
3408 | /// Look up a friend of a local class. This lookup does not look |
3409 | /// outside the innermost non-class scope. See C++11 [class.friend]p11. |
3410 | LookupLocalFriendName, |
3411 | /// Look up the name of an Objective-C protocol. |
3412 | LookupObjCProtocolName, |
3413 | /// Look up implicit 'self' parameter of an objective-c method. |
3414 | LookupObjCImplicitSelfParam, |
3415 | /// Look up the name of an OpenMP user-defined reduction operation. |
3416 | LookupOMPReductionName, |
3417 | /// Look up the name of an OpenMP user-defined mapper. |
3418 | LookupOMPMapperName, |
3419 | /// Look up any declaration with any name. |
3420 | LookupAnyName |
3421 | }; |
3422 | |
3423 | /// Specifies whether (or how) name lookup is being performed for a |
3424 | /// redeclaration (vs. a reference). |
3425 | enum RedeclarationKind { |
3426 | /// The lookup is a reference to this name that is not for the |
3427 | /// purpose of redeclaring the name. |
3428 | NotForRedeclaration = 0, |
3429 | /// The lookup results will be used for redeclaration of a name, |
3430 | /// if an entity by that name already exists and is visible. |
3431 | ForVisibleRedeclaration, |
3432 | /// The lookup results will be used for redeclaration of a name |
3433 | /// with external linkage; non-visible lookup results with external linkage |
3434 | /// may also be found. |
3435 | ForExternalRedeclaration |
3436 | }; |
3437 | |
3438 | RedeclarationKind forRedeclarationInCurContext() { |
3439 | // A declaration with an owning module for linkage can never link against |
3440 | // anything that is not visible. We don't need to check linkage here; if |
3441 | // the context has internal linkage, redeclaration lookup won't find things |
3442 | // from other TUs, and we can't safely compute linkage yet in general. |
3443 | if (cast<Decl>(CurContext) |
3444 | ->getOwningModuleForLinkage(/*IgnoreLinkage*/true)) |
3445 | return ForVisibleRedeclaration; |
3446 | return ForExternalRedeclaration; |
3447 | } |
3448 | |
3449 | /// The possible outcomes of name lookup for a literal operator. |
3450 | enum LiteralOperatorLookupResult { |
3451 | /// The lookup resulted in an error. |
3452 | LOLR_Error, |
3453 | /// The lookup found no match but no diagnostic was issued. |
3454 | LOLR_ErrorNoDiagnostic, |
3455 | /// The lookup found a single 'cooked' literal operator, which |
3456 | /// expects a normal literal to be built and passed to it. |
3457 | LOLR_Cooked, |
3458 | /// The lookup found a single 'raw' literal operator, which expects |
3459 | /// a string literal containing the spelling of the literal token. |
3460 | LOLR_Raw, |
3461 | /// The lookup found an overload set of literal operator templates, |
3462 | /// which expect the characters of the spelling of the literal token to be |
3463 | /// passed as a non-type template argument pack. |
3464 | LOLR_Template, |
3465 | /// The lookup found an overload set of literal operator templates, |
3466 | /// which expect the character type and characters of the spelling of the |
3467 | /// string literal token to be passed as template arguments. |
3468 | LOLR_StringTemplate |
3469 | }; |
3470 | |
3471 | SpecialMemberOverloadResult LookupSpecialMember(CXXRecordDecl *D, |
3472 | CXXSpecialMember SM, |
3473 | bool ConstArg, |
3474 | bool VolatileArg, |
3475 | bool RValueThis, |
3476 | bool ConstThis, |
3477 | bool VolatileThis); |
3478 | |
3479 | typedef std::function<void(const TypoCorrection &)> TypoDiagnosticGenerator; |
3480 | typedef std::function<ExprResult(Sema &, TypoExpr *, TypoCorrection)> |
3481 | TypoRecoveryCallback; |
3482 | |
3483 | private: |
3484 | bool CppLookupName(LookupResult &R, Scope *S); |
3485 | |
3486 | struct TypoExprState { |
3487 | std::unique_ptr<TypoCorrectionConsumer> Consumer; |
3488 | TypoDiagnosticGenerator DiagHandler; |
3489 | TypoRecoveryCallback RecoveryHandler; |
3490 | TypoExprState(); |
3491 | TypoExprState(TypoExprState &&other) noexcept; |
3492 | TypoExprState &operator=(TypoExprState &&other) noexcept; |
3493 | }; |
3494 | |
3495 | /// The set of unhandled TypoExprs and their associated state. |
3496 | llvm::MapVector<TypoExpr *, TypoExprState> DelayedTypos; |
3497 | |
3498 | /// Creates a new TypoExpr AST node. |
3499 | TypoExpr *createDelayedTypo(std::unique_ptr<TypoCorrectionConsumer> TCC, |
3500 | TypoDiagnosticGenerator TDG, |
3501 | TypoRecoveryCallback TRC); |
3502 | |
3503 | // The set of known/encountered (unique, canonicalized) NamespaceDecls. |
3504 | // |
3505 | // The boolean value will be true to indicate that the namespace was loaded |
3506 | // from an AST/PCH file, or false otherwise. |
3507 | llvm::MapVector<NamespaceDecl*, bool> KnownNamespaces; |
3508 | |
3509 | /// Whether we have already loaded known namespaces from an extenal |
3510 | /// source. |
3511 | bool LoadedExternalKnownNamespaces; |
3512 | |
3513 | /// Helper for CorrectTypo and CorrectTypoDelayed used to create and |
3514 | /// populate a new TypoCorrectionConsumer. Returns nullptr if typo correction |
3515 | /// should be skipped entirely. |
3516 | std::unique_ptr<TypoCorrectionConsumer> |
3517 | makeTypoCorrectionConsumer(const DeclarationNameInfo &Typo, |
3518 | Sema::LookupNameKind LookupKind, Scope *S, |
3519 | CXXScopeSpec *SS, |
3520 | CorrectionCandidateCallback &CCC, |
3521 | DeclContext *MemberContext, bool EnteringContext, |
3522 | const ObjCObjectPointerType *OPT, |
3523 | bool ErrorRecovery); |
3524 | |
3525 | public: |
3526 | const TypoExprState &getTypoExprState(TypoExpr *TE) const; |
3527 | |
3528 | /// Clears the state of the given TypoExpr. |
3529 | void clearDelayedTypo(TypoExpr *TE); |
3530 | |
3531 | /// Look up a name, looking for a single declaration. Return |
3532 | /// null if the results were absent, ambiguous, or overloaded. |
3533 | /// |
3534 | /// It is preferable to use the elaborated form and explicitly handle |
3535 | /// ambiguity and overloaded. |
3536 | NamedDecl *LookupSingleName(Scope *S, DeclarationName Name, |
3537 | SourceLocation Loc, |
3538 | LookupNameKind NameKind, |
3539 | RedeclarationKind Redecl |
3540 | = NotForRedeclaration); |
3541 | bool LookupBuiltin(LookupResult &R); |
3542 | bool LookupName(LookupResult &R, Scope *S, |
3543 | bool AllowBuiltinCreation = false); |
3544 | bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, |
3545 | bool InUnqualifiedLookup = false); |
3546 | bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, |
3547 | CXXScopeSpec &SS); |
3548 | bool LookupParsedName(LookupResult &R, Scope *S, CXXScopeSpec *SS, |
3549 | bool AllowBuiltinCreation = false, |
3550 | bool EnteringContext = false); |
3551 | ObjCProtocolDecl *LookupProtocol(IdentifierInfo *II, SourceLocation IdLoc, |
3552 | RedeclarationKind Redecl |
3553 | = NotForRedeclaration); |
3554 | bool LookupInSuper(LookupResult &R, CXXRecordDecl *Class); |
3555 | |
3556 | void LookupOverloadedOperatorName(OverloadedOperatorKind Op, Scope *S, |
3557 | QualType T1, QualType T2, |
3558 | UnresolvedSetImpl &Functions); |
3559 | |
3560 | LabelDecl *LookupOrCreateLabel(IdentifierInfo *II, SourceLocation IdentLoc, |
3561 | SourceLocation GnuLabelLoc = SourceLocation()); |
3562 | |
3563 | DeclContextLookupResult LookupConstructors(CXXRecordDecl *Class); |
3564 | CXXConstructorDecl *LookupDefaultConstructor(CXXRecordDecl *Class); |
3565 | CXXConstructorDecl *LookupCopyingConstructor(CXXRecordDecl *Class, |
3566 | unsigned Quals); |
3567 | CXXMethodDecl *LookupCopyingAssignment(CXXRecordDecl *Class, unsigned Quals, |
3568 | bool RValueThis, unsigned ThisQuals); |
3569 | CXXConstructorDecl *LookupMovingConstructor(CXXRecordDecl *Class, |
3570 | unsigned Quals); |
3571 | CXXMethodDecl *LookupMovingAssignment(CXXRecordDecl *Class, unsigned Quals, |
3572 | bool RValueThis, unsigned ThisQuals); |
3573 | CXXDestructorDecl *LookupDestructor(CXXRecordDecl *Class); |
3574 | |
3575 | bool checkLiteralOperatorId(const CXXScopeSpec &SS, const UnqualifiedId &Id); |
3576 | LiteralOperatorLookupResult LookupLiteralOperator(Scope *S, LookupResult &R, |
3577 | ArrayRef<QualType> ArgTys, |
3578 | bool AllowRaw, |
3579 | bool AllowTemplate, |
3580 | bool AllowStringTemplate, |
3581 | bool DiagnoseMissing); |
3582 | bool isKnownName(StringRef name); |
3583 | |
3584 | /// Status of the function emission on the CUDA/HIP/OpenMP host/device attrs. |
3585 | enum class FunctionEmissionStatus { |
3586 | Emitted, |
3587 | CUDADiscarded, // Discarded due to CUDA/HIP hostness |
3588 | OMPDiscarded, // Discarded due to OpenMP hostness |
3589 | TemplateDiscarded, // Discarded due to uninstantiated templates |
3590 | Unknown, |
3591 | }; |
3592 | FunctionEmissionStatus getEmissionStatus(FunctionDecl *Decl); |
3593 | |
3594 | // Whether the callee should be ignored in CUDA/HIP/OpenMP host/device check. |
3595 | bool shouldIgnoreInHostDeviceCheck(FunctionDecl *Callee); |
3596 | |
3597 | void ArgumentDependentLookup(DeclarationName Name, SourceLocation Loc, |
3598 | ArrayRef<Expr *> Args, ADLResult &Functions); |
3599 | |
3600 | void LookupVisibleDecls(Scope *S, LookupNameKind Kind, |
3601 | VisibleDeclConsumer &Consumer, |
3602 | bool IncludeGlobalScope = true, |
3603 | bool LoadExternal = true); |
3604 | void LookupVisibleDecls(DeclContext *Ctx, LookupNameKind Kind, |
3605 | VisibleDeclConsumer &Consumer, |
3606 | bool IncludeGlobalScope = true, |
3607 | bool IncludeDependentBases = false, |
3608 | bool LoadExternal = true); |
3609 | |
3610 | enum CorrectTypoKind { |
3611 | CTK_NonError, // CorrectTypo used in a non error recovery situation. |
3612 | CTK_ErrorRecovery // CorrectTypo used in normal error recovery. |
3613 | }; |
3614 | |
3615 | TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo, |
3616 | Sema::LookupNameKind LookupKind, |
3617 | Scope *S, CXXScopeSpec *SS, |
3618 | CorrectionCandidateCallback &CCC, |
3619 | CorrectTypoKind Mode, |
3620 | DeclContext *MemberContext = nullptr, |
3621 | bool EnteringContext = false, |
3622 | const ObjCObjectPointerType *OPT = nullptr, |
3623 | bool RecordFailure = true); |
3624 | |
3625 | TypoExpr *CorrectTypoDelayed(const DeclarationNameInfo &Typo, |
3626 | Sema::LookupNameKind LookupKind, Scope *S, |
3627 | CXXScopeSpec *SS, |
3628 | CorrectionCandidateCallback &CCC, |
3629 | TypoDiagnosticGenerator TDG, |
3630 | TypoRecoveryCallback TRC, CorrectTypoKind Mode, |
3631 | DeclContext *MemberContext = nullptr, |
3632 | bool EnteringContext = false, |
3633 | const ObjCObjectPointerType *OPT = nullptr); |
3634 | |
3635 | /// Process any TypoExprs in the given Expr and its children, |
3636 | /// generating diagnostics as appropriate and returning a new Expr if there |
3637 | /// were typos that were all successfully corrected and ExprError if one or |
3638 | /// more typos could not be corrected. |
3639 | /// |
3640 | /// \param E The Expr to check for TypoExprs. |
3641 | /// |
3642 | /// \param InitDecl A VarDecl to avoid because the Expr being corrected is its |
3643 | /// initializer. |
3644 | /// |
3645 | /// \param Filter A function applied to a newly rebuilt Expr to determine if |
3646 | /// it is an acceptable/usable result from a single combination of typo |
3647 | /// corrections. As long as the filter returns ExprError, different |
3648 | /// combinations of corrections will be tried until all are exhausted. |
3649 | ExprResult |
3650 | CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl = nullptr, |
3651 | llvm::function_ref<ExprResult(Expr *)> Filter = |
3652 | [](Expr *E) -> ExprResult { return E; }); |
3653 | |
3654 | ExprResult |
3655 | CorrectDelayedTyposInExpr(Expr *E, |
3656 | llvm::function_ref<ExprResult(Expr *)> Filter) { |
3657 | return CorrectDelayedTyposInExpr(E, nullptr, Filter); |
3658 | } |
3659 | |
3660 | ExprResult |
3661 | CorrectDelayedTyposInExpr(ExprResult ER, VarDecl *InitDecl = nullptr, |
3662 | llvm::function_ref<ExprResult(Expr *)> Filter = |
3663 | [](Expr *E) -> ExprResult { return E; }) { |
3664 | return ER.isInvalid() ? ER : CorrectDelayedTyposInExpr(ER.get(), Filter); |
3665 | } |
3666 | |
3667 | ExprResult |
3668 | CorrectDelayedTyposInExpr(ExprResult ER, |
3669 | llvm::function_ref<ExprResult(Expr *)> Filter) { |
3670 | return CorrectDelayedTyposInExpr(ER, nullptr, Filter); |
3671 | } |
3672 | |
3673 | void diagnoseTypo(const TypoCorrection &Correction, |
3674 | const PartialDiagnostic &TypoDiag, |
3675 | bool ErrorRecovery = true); |
3676 | |
3677 | void diagnoseTypo(const TypoCorrection &Correction, |
3678 | const PartialDiagnostic &TypoDiag, |
3679 | const PartialDiagnostic &PrevNote, |
3680 | bool ErrorRecovery = true); |
3681 | |
3682 | void MarkTypoCorrectedFunctionDefinition(const NamedDecl *F); |
3683 | |
3684 | void FindAssociatedClassesAndNamespaces(SourceLocation InstantiationLoc, |
3685 | ArrayRef<Expr *> Args, |
3686 | AssociatedNamespaceSet &AssociatedNamespaces, |
3687 | AssociatedClassSet &AssociatedClasses); |
3688 | |
3689 | void FilterLookupForScope(LookupResult &R, DeclContext *Ctx, Scope *S, |
3690 | bool ConsiderLinkage, bool AllowInlineNamespace); |
3691 | |
3692 | bool CheckRedeclarationModuleOwnership(NamedDecl *New, NamedDecl *Old); |
3693 | |
3694 | void DiagnoseAmbiguousLookup(LookupResult &Result); |
3695 | //@} |
3696 | |
3697 | ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *&Id, |
3698 | SourceLocation IdLoc, |
3699 | bool TypoCorrection = false); |
3700 | NamedDecl *LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, |
3701 | Scope *S, bool ForRedeclaration, |
3702 | SourceLocation Loc); |
3703 | NamedDecl *ImplicitlyDefineFunction(SourceLocation Loc, IdentifierInfo &II, |
3704 | Scope *S); |
3705 | void AddKnownFunctionAttributes(FunctionDecl *FD); |
3706 | |
3707 | // More parsing and symbol table subroutines. |
3708 | |
3709 | void ProcessPragmaWeak(Scope *S, Decl *D); |
3710 | // Decl attributes - this routine is the top level dispatcher. |
3711 | void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD); |
3712 | // Helper for delayed processing of attributes. |
3713 | void ProcessDeclAttributeDelayed(Decl *D, |
3714 | const ParsedAttributesView &AttrList); |
3715 | void ProcessDeclAttributeList(Scope *S, Decl *D, const ParsedAttributesView &AL, |
3716 | bool IncludeCXX11Attributes = true); |
3717 | bool ProcessAccessDeclAttributeList(AccessSpecDecl *ASDecl, |
3718 | const ParsedAttributesView &AttrList); |
3719 | |
3720 | void checkUnusedDeclAttributes(Declarator &D); |
3721 | |
3722 | /// Determine if type T is a valid subject for a nonnull and similar |
3723 | /// attributes. By default, we look through references (the behavior used by |
3724 | /// nonnull), but if the second parameter is true, then we treat a reference |
3725 | /// type as valid. |
3726 | bool isValidPointerAttrType(QualType T, bool RefOkay = false); |
3727 | |
3728 | bool CheckRegparmAttr(const ParsedAttr &attr, unsigned &value); |
3729 | bool CheckCallingConvAttr(const ParsedAttr &attr, CallingConv &CC, |
3730 | const FunctionDecl *FD = nullptr); |
3731 | bool CheckAttrTarget(const ParsedAttr &CurrAttr); |
3732 | bool CheckAttrNoArgs(const ParsedAttr &CurrAttr); |
3733 | bool checkStringLiteralArgumentAttr(const ParsedAttr &Attr, unsigned ArgNum, |
3734 | StringRef &Str, |
3735 | SourceLocation *ArgLocation = nullptr); |
3736 | bool checkSectionName(SourceLocation LiteralLoc, StringRef Str); |
3737 | bool checkTargetAttr(SourceLocation LiteralLoc, StringRef Str); |
3738 | bool checkMSInheritanceAttrOnDefinition( |
3739 | CXXRecordDecl *RD, SourceRange Range, bool BestCase, |
3740 | MSInheritanceAttr::Spelling SemanticSpelling); |
3741 | |
3742 | void CheckAlignasUnderalignment(Decl *D); |
3743 | |
3744 | /// Adjust the calling convention of a method to be the ABI default if it |
3745 | /// wasn't specified explicitly. This handles method types formed from |
3746 | /// function type typedefs and typename template arguments. |
3747 | void adjustMemberFunctionCC(QualType &T, bool IsStatic, bool IsCtorOrDtor, |
3748 | SourceLocation Loc); |
3749 | |
3750 | // Check if there is an explicit attribute, but only look through parens. |
3751 | // The intent is to look for an attribute on the current declarator, but not |
3752 | // one that came from a typedef. |
3753 | bool hasExplicitCallingConv(QualType T); |
3754 | |
3755 | /// Get the outermost AttributedType node that sets a calling convention. |
3756 | /// Valid types should not have multiple attributes with different CCs. |
3757 | const AttributedType *getCallingConvAttributedType(QualType T) const; |
3758 | |
3759 | /// Stmt attributes - this routine is the top level dispatcher. |
3760 | StmtResult ProcessStmtAttributes(Stmt *Stmt, |
3761 | const ParsedAttributesView &Attrs, |
3762 | SourceRange Range); |
3763 | |
3764 | void WarnConflictingTypedMethods(ObjCMethodDecl *Method, |
3765 | ObjCMethodDecl *MethodDecl, |
3766 | bool IsProtocolMethodDecl); |
3767 | |
3768 | void CheckConflictingOverridingMethod(ObjCMethodDecl *Method, |
3769 | ObjCMethodDecl *Overridden, |
3770 | bool IsProtocolMethodDecl); |
3771 | |
3772 | /// WarnExactTypedMethods - This routine issues a warning if method |
3773 | /// implementation declaration matches exactly that of its declaration. |
3774 | void WarnExactTypedMethods(ObjCMethodDecl *Method, |
3775 | ObjCMethodDecl *MethodDecl, |
3776 | bool IsProtocolMethodDecl); |
3777 | |
3778 | typedef llvm::SmallPtrSet<Selector, 8> SelectorSet; |
3779 | |
3780 | /// CheckImplementationIvars - This routine checks if the instance variables |
3781 | /// listed in the implelementation match those listed in the interface. |
3782 | void CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, |
3783 | ObjCIvarDecl **Fields, unsigned nIvars, |
3784 | SourceLocation Loc); |
3785 | |
3786 | /// ImplMethodsVsClassMethods - This is main routine to warn if any method |
3787 | /// remains unimplemented in the class or category \@implementation. |
3788 | void ImplMethodsVsClassMethods(Scope *S, ObjCImplDecl* IMPDecl, |
3789 | ObjCContainerDecl* IDecl, |
3790 | bool IncompleteImpl = false); |
3791 | |
3792 | /// DiagnoseUnimplementedProperties - This routine warns on those properties |
3793 | /// which must be implemented by this implementation. |
3794 | void DiagnoseUnimplementedProperties(Scope *S, ObjCImplDecl* IMPDecl, |
3795 | ObjCContainerDecl *CDecl, |
3796 | bool SynthesizeProperties); |
3797 | |
3798 | /// Diagnose any null-resettable synthesized setters. |
3799 | void diagnoseNullResettableSynthesizedSetters(const ObjCImplDecl *impDecl); |
3800 | |
3801 | /// DefaultSynthesizeProperties - This routine default synthesizes all |
3802 | /// properties which must be synthesized in the class's \@implementation. |
3803 | void DefaultSynthesizeProperties(Scope *S, ObjCImplDecl *IMPDecl, |
3804 | ObjCInterfaceDecl *IDecl, |
3805 | SourceLocation AtEnd); |
3806 | void DefaultSynthesizeProperties(Scope *S, Decl *D, SourceLocation AtEnd); |
3807 | |
3808 | /// IvarBacksCurrentMethodAccessor - This routine returns 'true' if 'IV' is |
3809 | /// an ivar synthesized for 'Method' and 'Method' is a property accessor |
3810 | /// declared in class 'IFace'. |
3811 | bool IvarBacksCurrentMethodAccessor(ObjCInterfaceDecl *IFace, |
3812 | ObjCMethodDecl *Method, ObjCIvarDecl *IV); |
3813 | |
3814 | /// DiagnoseUnusedBackingIvarInAccessor - Issue an 'unused' warning if ivar which |
3815 | /// backs the property is not used in the property's accessor. |
3816 | void DiagnoseUnusedBackingIvarInAccessor(Scope *S, |
3817 | const ObjCImplementationDecl *ImplD); |
3818 | |
3819 | /// GetIvarBackingPropertyAccessor - If method is a property setter/getter and |
3820 | /// it property has a backing ivar, returns this ivar; otherwise, returns NULL. |
3821 | /// It also returns ivar's property on success. |
3822 | ObjCIvarDecl *GetIvarBackingPropertyAccessor(const ObjCMethodDecl *Method, |
3823 | const ObjCPropertyDecl *&PDecl) const; |
3824 | |
3825 | /// Called by ActOnProperty to handle \@property declarations in |
3826 | /// class extensions. |
3827 | ObjCPropertyDecl *HandlePropertyInClassExtension(Scope *S, |
3828 | SourceLocation AtLoc, |
3829 | SourceLocation LParenLoc, |
3830 | FieldDeclarator &FD, |
3831 | Selector GetterSel, |
3832 | SourceLocation GetterNameLoc, |
3833 | Selector SetterSel, |
3834 | SourceLocation SetterNameLoc, |
3835 | const bool isReadWrite, |
3836 | unsigned &Attributes, |
3837 | const unsigned AttributesAsWritten, |
3838 | QualType T, |
3839 | TypeSourceInfo *TSI, |
3840 | tok::ObjCKeywordKind MethodImplKind); |
3841 | |
3842 | /// Called by ActOnProperty and HandlePropertyInClassExtension to |
3843 | /// handle creating the ObjcPropertyDecl for a category or \@interface. |
3844 | ObjCPropertyDecl *CreatePropertyDecl(Scope *S, |
3845 | ObjCContainerDecl *CDecl, |
3846 | SourceLocation AtLoc, |
3847 | SourceLocation LParenLoc, |
3848 | FieldDeclarator &FD, |
3849 | Selector GetterSel, |
3850 | SourceLocation GetterNameLoc, |
3851 | Selector SetterSel, |
3852 | SourceLocation SetterNameLoc, |
3853 | const bool isReadWrite, |
3854 | const unsigned Attributes, |
3855 | const unsigned AttributesAsWritten, |
3856 | QualType T, |
3857 | TypeSourceInfo *TSI, |
3858 | tok::ObjCKeywordKind MethodImplKind, |
3859 | DeclContext *lexicalDC = nullptr); |
3860 | |
3861 | /// AtomicPropertySetterGetterRules - This routine enforces the rule (via |
3862 | /// warning) when atomic property has one but not the other user-declared |
3863 | /// setter or getter. |
3864 | void AtomicPropertySetterGetterRules(ObjCImplDecl* IMPDecl, |
3865 | ObjCInterfaceDecl* IDecl); |
3866 | |
3867 | void DiagnoseOwningPropertyGetterSynthesis(const ObjCImplementationDecl *D); |
3868 | |
3869 | void DiagnoseMissingDesignatedInitOverrides( |
3870 | const ObjCImplementationDecl *ImplD, |
3871 | const ObjCInterfaceDecl *IFD); |
3872 | |
3873 | void DiagnoseDuplicateIvars(ObjCInterfaceDecl *ID, ObjCInterfaceDecl *SID); |
3874 | |
3875 | enum MethodMatchStrategy { |
3876 | MMS_loose, |
3877 | MMS_strict |
3878 | }; |
3879 | |
3880 | /// MatchTwoMethodDeclarations - Checks if two methods' type match and returns |
3881 | /// true, or false, accordingly. |
3882 | bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, |
3883 | const ObjCMethodDecl *PrevMethod, |
3884 | MethodMatchStrategy strategy = MMS_strict); |
3885 | |
3886 | /// MatchAllMethodDeclarations - Check methods declaraed in interface or |
3887 | /// or protocol against those declared in their implementations. |
3888 | void MatchAllMethodDeclarations(const SelectorSet &InsMap, |
3889 | const SelectorSet &ClsMap, |
3890 | SelectorSet &InsMapSeen, |
3891 | SelectorSet &ClsMapSeen, |
3892 | ObjCImplDecl* IMPDecl, |
3893 | ObjCContainerDecl* IDecl, |
3894 | bool &IncompleteImpl, |
3895 | bool ImmediateClass, |
3896 | bool WarnCategoryMethodImpl=false); |
3897 | |
3898 | /// CheckCategoryVsClassMethodMatches - Checks that methods implemented in |
3899 | /// category matches with those implemented in its primary class and |
3900 | /// warns each time an exact match is found. |
3901 | void CheckCategoryVsClassMethodMatches(ObjCCategoryImplDecl *CatIMP); |
3902 | |
3903 | /// Add the given method to the list of globally-known methods. |
3904 | void addMethodToGlobalList(ObjCMethodList *List, ObjCMethodDecl *Method); |
3905 | |
3906 | private: |
3907 | /// AddMethodToGlobalPool - Add an instance or factory method to the global |
3908 | /// pool. See descriptoin of AddInstanceMethodToGlobalPool. |
3909 | void AddMethodToGlobalPool(ObjCMethodDecl *Method, bool impl, bool instance); |
3910 | |
3911 | /// LookupMethodInGlobalPool - Returns the instance or factory method and |
3912 | /// optionally warns if there are multiple signatures. |
3913 | ObjCMethodDecl *LookupMethodInGlobalPool(Selector Sel, SourceRange R, |
3914 | bool receiverIdOrClass, |
3915 | bool instance); |
3916 | |
3917 | public: |
3918 | /// - Returns instance or factory methods in global method pool for |
3919 | /// given selector. It checks the desired kind first, if none is found, and |
3920 | /// parameter checkTheOther is set, it then checks the other kind. If no such |
3921 | /// method or only one method is found, function returns false; otherwise, it |
3922 | /// returns true. |
3923 | bool |
3924 | CollectMultipleMethodsInGlobalPool(Selector Sel, |
3925 | SmallVectorImpl<ObjCMethodDecl*>& Methods, |
3926 | bool InstanceFirst, bool CheckTheOther, |
3927 | const ObjCObjectType *TypeBound = nullptr); |
3928 | |
3929 | bool |
3930 | AreMultipleMethodsInGlobalPool(Selector Sel, ObjCMethodDecl *BestMethod, |
3931 | SourceRange R, bool receiverIdOrClass, |
3932 | SmallVectorImpl<ObjCMethodDecl*>& Methods); |
3933 | |
3934 | void |
3935 | DiagnoseMultipleMethodInGlobalPool(SmallVectorImpl<ObjCMethodDecl*> &Methods, |
3936 | Selector Sel, SourceRange R, |
3937 | bool receiverIdOrClass); |
3938 | |
3939 | private: |
3940 | /// - Returns a selector which best matches given argument list or |
3941 | /// nullptr if none could be found |
3942 | ObjCMethodDecl *SelectBestMethod(Selector Sel, MultiExprArg Args, |
3943 | bool IsInstance, |
3944 | SmallVectorImpl<ObjCMethodDecl*>& Methods); |
3945 | |
3946 | |
3947 | /// Record the typo correction failure and return an empty correction. |
3948 | TypoCorrection FailedCorrection(IdentifierInfo *Typo, SourceLocation TypoLoc, |
3949 | bool RecordFailure = true) { |
3950 | if (RecordFailure) |
3951 | TypoCorrectionFailures[Typo].insert(TypoLoc); |
3952 | return TypoCorrection(); |
3953 | } |
3954 | |
3955 | public: |
3956 | /// AddInstanceMethodToGlobalPool - All instance methods in a translation |
3957 | /// unit are added to a global pool. This allows us to efficiently associate |
3958 | /// a selector with a method declaraation for purposes of typechecking |
3959 | /// messages sent to "id" (where the class of the object is unknown). |
3960 | void AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { |
3961 | AddMethodToGlobalPool(Method, impl, /*instance*/true); |
3962 | } |
3963 | |
3964 | /// AddFactoryMethodToGlobalPool - Same as above, but for factory methods. |
3965 | void AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { |
3966 | AddMethodToGlobalPool(Method, impl, /*instance*/false); |
3967 | } |
3968 | |
3969 | /// AddAnyMethodToGlobalPool - Add any method, instance or factory to global |
3970 | /// pool. |
3971 | void AddAnyMethodToGlobalPool(Decl *D); |
3972 | |
3973 | /// LookupInstanceMethodInGlobalPool - Returns the method and warns if |
3974 | /// there are multiple signatures. |
3975 | ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R, |
3976 | bool receiverIdOrClass=false) { |
3977 | return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, |
3978 | /*instance*/true); |
3979 | } |
3980 | |
3981 | /// LookupFactoryMethodInGlobalPool - Returns the method and warns if |
3982 | /// there are multiple signatures. |
3983 | ObjCMethodDecl *LookupFactoryMethodInGlobalPool(Selector Sel, SourceRange R, |
3984 | bool receiverIdOrClass=false) { |
3985 | return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, |
3986 | /*instance*/false); |
3987 | } |
3988 | |
3989 | const ObjCMethodDecl *SelectorsForTypoCorrection(Selector Sel, |
3990 | QualType ObjectType=QualType()); |
3991 | /// LookupImplementedMethodInGlobalPool - Returns the method which has an |
3992 | /// implementation. |
3993 | ObjCMethodDecl *LookupImplementedMethodInGlobalPool(Selector Sel); |
3994 | |
3995 | /// CollectIvarsToConstructOrDestruct - Collect those ivars which require |
3996 | /// initialization. |
3997 | void CollectIvarsToConstructOrDestruct(ObjCInterfaceDecl *OI, |
3998 | SmallVectorImpl<ObjCIvarDecl*> &Ivars); |
3999 | |
4000 | //===--------------------------------------------------------------------===// |
4001 | // Statement Parsing Callbacks: SemaStmt.cpp. |
4002 | public: |
4003 | class FullExprArg { |
4004 | public: |
4005 | FullExprArg() : E(nullptr) { } |
4006 | FullExprArg(Sema &actions) : E(nullptr) { } |
4007 | |
4008 | ExprResult release() { |
4009 | return E; |
4010 | } |
4011 | |
4012 | Expr *get() const { return E; } |
4013 | |
4014 | Expr *operator->() { |
4015 | return E; |
4016 | } |
4017 | |
4018 | private: |
4019 | // FIXME: No need to make the entire Sema class a friend when it's just |
4020 | // Sema::MakeFullExpr that needs access to the constructor below. |
4021 | friend class Sema; |
4022 | |
4023 | explicit FullExprArg(Expr *expr) : E(expr) {} |
4024 | |
4025 | Expr *E; |
4026 | }; |
4027 | |
4028 | FullExprArg MakeFullExpr(Expr *Arg) { |
4029 | return MakeFullExpr(Arg, Arg ? Arg->getExprLoc() : SourceLocation()); |
4030 | } |
4031 | FullExprArg MakeFullExpr(Expr *Arg, SourceLocation CC) { |
4032 | return FullExprArg( |
4033 | ActOnFinishFullExpr(Arg, CC, /*DiscardedValue*/ false).get()); |
4034 | } |
4035 | FullExprArg MakeFullDiscardedValueExpr(Expr *Arg) { |
4036 | ExprResult FE = |
4037 | ActOnFinishFullExpr(Arg, Arg ? Arg->getExprLoc() : SourceLocation(), |
4038 | /*DiscardedValue*/ true); |
4039 | return FullExprArg(FE.get()); |
4040 | } |
4041 | |
4042 | StmtResult ActOnExprStmt(ExprResult Arg, bool DiscardedValue = true); |
4043 | StmtResult ActOnExprStmtError(); |
4044 | |
4045 | StmtResult ActOnNullStmt(SourceLocation SemiLoc, |
4046 | bool HasLeadingEmptyMacro = false); |
4047 | |
4048 | void ActOnStartOfCompoundStmt(bool IsStmtExpr); |
4049 | void ActOnFinishOfCompoundStmt(); |
4050 | StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R, |
4051 | ArrayRef<Stmt *> Elts, bool isStmtExpr); |
4052 | |
4053 | /// A RAII object to enter scope of a compound statement. |
4054 | class CompoundScopeRAII { |
4055 | public: |
4056 | CompoundScopeRAII(Sema &S, bool IsStmtExpr = false) : S(S) { |
4057 | S.ActOnStartOfCompoundStmt(IsStmtExpr); |
4058 | } |
4059 | |
4060 | ~CompoundScopeRAII() { |
4061 | S.ActOnFinishOfCompoundStmt(); |
4062 | } |
4063 | |
4064 | private: |
4065 | Sema &S; |
4066 | }; |
4067 | |
4068 | /// An RAII helper that pops function a function scope on exit. |
4069 | struct FunctionScopeRAII { |
4070 | Sema &S; |
4071 | bool Active; |
4072 | FunctionScopeRAII(Sema &S) : S(S), Active(true) {} |
4073 | ~FunctionScopeRAII() { |
4074 | if (Active) |
4075 | S.PopFunctionScopeInfo(); |
4076 | } |
4077 | void disable() { Active = false; } |
4078 | }; |
4079 | |
4080 | StmtResult ActOnDeclStmt(DeclGroupPtrTy Decl, |
4081 | SourceLocation StartLoc, |
4082 | SourceLocation EndLoc); |
4083 | void ActOnForEachDeclStmt(DeclGroupPtrTy Decl); |
4084 | StmtResult ActOnForEachLValueExpr(Expr *E); |
4085 | ExprResult ActOnCaseExpr(SourceLocation CaseLoc, ExprResult Val); |
4086 | StmtResult ActOnCaseStmt(SourceLocation CaseLoc, ExprResult LHS, |
4087 | SourceLocation DotDotDotLoc, ExprResult RHS, |
4088 | SourceLocation ColonLoc); |
4089 | void ActOnCaseStmtBody(Stmt *CaseStmt, Stmt *SubStmt); |
4090 | |
4091 | StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc, |
4092 | SourceLocation ColonLoc, |
4093 | Stmt *SubStmt, Scope *CurScope); |
4094 | StmtResult ActOnLabelStmt(SourceLocation IdentLoc, LabelDecl *TheDecl, |
4095 | SourceLocation ColonLoc, Stmt *SubStmt); |
4096 | |
4097 | StmtResult ActOnAttributedStmt(SourceLocation AttrLoc, |
4098 | ArrayRef<const Attr*> Attrs, |
4099 | Stmt *SubStmt); |
4100 | |
4101 | class ConditionResult; |
4102 | StmtResult ActOnIfStmt(SourceLocation IfLoc, bool IsConstexpr, |
4103 | Stmt *InitStmt, |
4104 | ConditionResult Cond, Stmt *ThenVal, |
4105 | SourceLocation ElseLoc, Stmt *ElseVal); |
4106 | StmtResult BuildIfStmt(SourceLocation IfLoc, bool IsConstexpr, |
4107 | Stmt *InitStmt, |
4108 | ConditionResult Cond, Stmt *ThenVal, |
4109 | SourceLocation ElseLoc, Stmt *ElseVal); |
4110 | StmtResult ActOnStartOfSwitchStmt(SourceLocation SwitchLoc, |
4111 | Stmt *InitStmt, |
4112 | ConditionResult Cond); |
4113 | StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc, |
4114 | Stmt *Switch, Stmt *Body); |
4115 | StmtResult ActOnWhileStmt(SourceLocation WhileLoc, ConditionResult Cond, |
4116 | Stmt *Body); |
4117 | StmtResult ActOnDoStmt(SourceLocation DoLoc, Stmt *Body, |
4118 | SourceLocation WhileLoc, SourceLocation CondLParen, |
4119 | Expr *Cond, SourceLocation CondRParen); |
4120 | |
4121 | StmtResult ActOnForStmt(SourceLocation ForLoc, |
4122 | SourceLocation LParenLoc, |
4123 | Stmt *First, |
4124 | ConditionResult Second, |
4125 | FullExprArg Third, |
4126 | SourceLocation RParenLoc, |
4127 | Stmt *Body); |
4128 | ExprResult CheckObjCForCollectionOperand(SourceLocation forLoc, |
4129 | Expr *collection); |
4130 | StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc, |
4131 | Stmt *First, Expr *collection, |
4132 | SourceLocation RParenLoc); |
4133 | StmtResult FinishObjCForCollectionStmt(Stmt *ForCollection, Stmt *Body); |
4134 | |
4135 | enum BuildForRangeKind { |
4136 | /// Initial building of a for-range statement. |
4137 | BFRK_Build, |
4138 | /// Instantiation or recovery rebuild of a for-range statement. Don't |
4139 | /// attempt any typo-correction. |
4140 | BFRK_Rebuild, |
4141 | /// Determining whether a for-range statement could be built. Avoid any |
4142 | /// unnecessary or irreversible actions. |
4143 | BFRK_Check |
4144 | }; |
4145 | |
4146 | StmtResult ActOnCXXForRangeStmt(Scope *S, SourceLocation ForLoc, |
4147 | SourceLocation CoawaitLoc, |
4148 | Stmt *InitStmt, |
4149 | Stmt *LoopVar, |
4150 | SourceLocation ColonLoc, Expr *Collection, |
4151 | SourceLocation RParenLoc, |
4152 | BuildForRangeKind Kind); |
4153 | StmtResult BuildCXXForRangeStmt(SourceLocation ForLoc, |
4154 | SourceLocation CoawaitLoc, |
4155 | Stmt *InitStmt, |
4156 | SourceLocation ColonLoc, |
4157 | Stmt *RangeDecl, Stmt *Begin, Stmt *End, |
4158 | Expr *Cond, Expr *Inc, |
4159 | Stmt *LoopVarDecl, |
4160 | SourceLocation RParenLoc, |
4161 | BuildForRangeKind Kind); |
4162 | StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body); |
4163 | |
4164 | StmtResult ActOnGotoStmt(SourceLocation GotoLoc, |
4165 | SourceLocation LabelLoc, |
4166 | LabelDecl *TheDecl); |
4167 | StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc, |
4168 | SourceLocation StarLoc, |
4169 | Expr *DestExp); |
4170 | StmtResult ActOnContinueStmt(SourceLocation ContinueLoc, Scope *CurScope); |
4171 | StmtResult ActOnBreakStmt(SourceLocation BreakLoc, Scope *CurScope); |
4172 | |
4173 | void ActOnCapturedRegionStart(SourceLocation Loc, Scope *CurScope, |
4174 | CapturedRegionKind Kind, unsigned NumParams); |
4175 | typedef std::pair<StringRef, QualType> CapturedParamNameType; |
4176 | void ActOnCapturedRegionStart(SourceLocation Loc, Scope *CurScope, |
4177 | CapturedRegionKind Kind, |
4178 | ArrayRef<CapturedParamNameType> Params, |
4179 | unsigned OpenMPCaptureLevel = 0); |
4180 | StmtResult ActOnCapturedRegionEnd(Stmt *S); |
4181 | void ActOnCapturedRegionError(); |
4182 | RecordDecl *CreateCapturedStmtRecordDecl(CapturedDecl *&CD, |
4183 | SourceLocation Loc, |
4184 | unsigned NumParams); |
4185 | |
4186 | enum CopyElisionSemanticsKind { |
4187 | CES_Strict = 0, |
4188 | CES_AllowParameters = 1, |
4189 | CES_AllowDifferentTypes = 2, |
4190 | CES_AllowExceptionVariables = 4, |
4191 | CES_FormerDefault = (CES_AllowParameters), |
4192 | CES_Default = (CES_AllowParameters | CES_AllowDifferentTypes), |
4193 | CES_AsIfByStdMove = (CES_AllowParameters | CES_AllowDifferentTypes | |
4194 | CES_AllowExceptionVariables), |
4195 | }; |
4196 | |
4197 | VarDecl *getCopyElisionCandidate(QualType ReturnType, Expr *E, |
4198 | CopyElisionSemanticsKind CESK); |
4199 | bool isCopyElisionCandidate(QualType ReturnType, const VarDecl *VD, |
4200 | CopyElisionSemanticsKind CESK); |
4201 | |
4202 | StmtResult ActOnReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp, |
4203 | Scope *CurScope); |
4204 | StmtResult BuildReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
4205 | StmtResult ActOnCapScopeReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
4206 | |
4207 | StmtResult ActOnGCCAsmStmt(SourceLocation AsmLoc, bool IsSimple, |
4208 | bool IsVolatile, unsigned NumOutputs, |
4209 | unsigned NumInputs, IdentifierInfo **Names, |
4210 | MultiExprArg Constraints, MultiExprArg Exprs, |
4211 | Expr *AsmString, MultiExprArg Clobbers, |
4212 | unsigned NumLabels, |
4213 | SourceLocation RParenLoc); |
4214 | |
4215 | void FillInlineAsmIdentifierInfo(Expr *Res, |
4216 | llvm::InlineAsmIdentifierInfo &Info); |
4217 | ExprResult LookupInlineAsmIdentifier(CXXScopeSpec &SS, |
4218 | SourceLocation TemplateKWLoc, |
4219 | UnqualifiedId &Id, |
4220 | bool IsUnevaluatedContext); |
4221 | bool LookupInlineAsmField(StringRef Base, StringRef Member, |
4222 | unsigned &Offset, SourceLocation AsmLoc); |
4223 | ExprResult LookupInlineAsmVarDeclField(Expr *RefExpr, StringRef Member, |
4224 | SourceLocation AsmLoc); |
4225 | StmtResult ActOnMSAsmStmt(SourceLocation AsmLoc, SourceLocation LBraceLoc, |
4226 | ArrayRef<Token> AsmToks, |
4227 | StringRef AsmString, |
4228 | unsigned NumOutputs, unsigned NumInputs, |
4229 | ArrayRef<StringRef> Constraints, |
4230 | ArrayRef<StringRef> Clobbers, |
4231 | ArrayRef<Expr*> Exprs, |
4232 | SourceLocation EndLoc); |
4233 | LabelDecl *GetOrCreateMSAsmLabel(StringRef ExternalLabelName, |
4234 | SourceLocation Location, |
4235 | bool AlwaysCreate); |
4236 | |
4237 | VarDecl *BuildObjCExceptionDecl(TypeSourceInfo *TInfo, QualType ExceptionType, |
4238 | SourceLocation StartLoc, |
4239 | SourceLocation IdLoc, IdentifierInfo *Id, |
4240 | bool Invalid = false); |
4241 | |
4242 | Decl *ActOnObjCExceptionDecl(Scope *S, Declarator &D); |
4243 | |
4244 | StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc, SourceLocation RParen, |
4245 | Decl *Parm, Stmt *Body); |
4246 | |
4247 | StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc, Stmt *Body); |
4248 | |
4249 | StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc, Stmt *Try, |
4250 | MultiStmtArg Catch, Stmt *Finally); |
4251 | |
4252 | StmtResult BuildObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw); |
4253 | StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw, |
4254 | Scope *CurScope); |
4255 | ExprResult ActOnObjCAtSynchronizedOperand(SourceLocation atLoc, |
4256 | Expr *operand); |
4257 | StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc, |
4258 | Expr *SynchExpr, |
4259 | Stmt *SynchBody); |
4260 | |
4261 | StmtResult ActOnObjCAutoreleasePoolStmt(SourceLocation AtLoc, Stmt *Body); |
4262 | |
4263 | VarDecl *BuildExceptionDeclaration(Scope *S, TypeSourceInfo *TInfo, |
4264 | SourceLocation StartLoc, |
4265 | SourceLocation IdLoc, |
4266 | IdentifierInfo *Id); |
4267 | |
4268 | Decl *ActOnExceptionDeclarator(Scope *S, Declarator &D); |
4269 | |
4270 | StmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc, |
4271 | Decl *ExDecl, Stmt *HandlerBlock); |
4272 | StmtResult ActOnCXXTryBlock(SourceLocation TryLoc, Stmt *TryBlock, |
4273 | ArrayRef<Stmt *> Handlers); |
4274 | |
4275 | StmtResult ActOnSEHTryBlock(bool IsCXXTry, // try (true) or __try (false) ? |
4276 | SourceLocation TryLoc, Stmt *TryBlock, |
4277 | Stmt *Handler); |
4278 | StmtResult ActOnSEHExceptBlock(SourceLocation Loc, |
4279 | Expr *FilterExpr, |
4280 | Stmt *Block); |
4281 | void ActOnStartSEHFinallyBlock(); |
4282 | void ActOnAbortSEHFinallyBlock(); |
4283 | StmtResult ActOnFinishSEHFinallyBlock(SourceLocation Loc, Stmt *Block); |
4284 | StmtResult ActOnSEHLeaveStmt(SourceLocation Loc, Scope *CurScope); |
4285 | |
4286 | void DiagnoseReturnInConstructorExceptionHandler(CXXTryStmt *TryBlock); |
4287 | |
4288 | bool ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const; |
4289 | |
4290 | /// If it's a file scoped decl that must warn if not used, keep track |
4291 | /// of it. |
4292 | void MarkUnusedFileScopedDecl(const DeclaratorDecl *D); |
4293 | |
4294 | /// DiagnoseUnusedExprResult - If the statement passed in is an expression |
4295 | /// whose result is unused, warn. |
4296 | void DiagnoseUnusedExprResult(const Stmt *S); |
4297 | void DiagnoseUnusedNestedTypedefs(const RecordDecl *D); |
4298 | void DiagnoseUnusedDecl(const NamedDecl *ND); |
4299 | |
4300 | /// Emit \p DiagID if statement located on \p StmtLoc has a suspicious null |
4301 | /// statement as a \p Body, and it is located on the same line. |
4302 | /// |
4303 | /// This helps prevent bugs due to typos, such as: |
4304 | /// if (condition); |
4305 | /// do_stuff(); |
4306 | void DiagnoseEmptyStmtBody(SourceLocation StmtLoc, |
4307 | const Stmt *Body, |
4308 | unsigned DiagID); |
4309 | |
4310 | /// Warn if a for/while loop statement \p S, which is followed by |
4311 | /// \p PossibleBody, has a suspicious null statement as a body. |
4312 | void DiagnoseEmptyLoopBody(const Stmt *S, |
4313 | const Stmt *PossibleBody); |
4314 | |
4315 | /// Warn if a value is moved to itself. |
4316 | void DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, |
4317 | SourceLocation OpLoc); |
4318 | |
4319 | /// Warn if we're implicitly casting from a _Nullable pointer type to a |
4320 | /// _Nonnull one. |
4321 | void diagnoseNullableToNonnullConversion(QualType DstType, QualType SrcType, |
4322 | SourceLocation Loc); |
4323 | |
4324 | /// Warn when implicitly casting 0 to nullptr. |
4325 | void diagnoseZeroToNullptrConversion(CastKind Kind, const Expr *E); |
4326 | |
4327 | ParsingDeclState PushParsingDeclaration(sema::DelayedDiagnosticPool &pool) { |
4328 | return DelayedDiagnostics.push(pool); |
4329 | } |
4330 | void PopParsingDeclaration(ParsingDeclState state, Decl *decl); |
4331 | |
4332 | typedef ProcessingContextState ParsingClassState; |
4333 | ParsingClassState PushParsingClass() { |
4334 | return DelayedDiagnostics.pushUndelayed(); |
4335 | } |
4336 | void PopParsingClass(ParsingClassState state) { |
4337 | DelayedDiagnostics.popUndelayed(state); |
4338 | } |
4339 | |
4340 | void redelayDiagnostics(sema::DelayedDiagnosticPool &pool); |
4341 | |
4342 | void DiagnoseAvailabilityOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, |
4343 | const ObjCInterfaceDecl *UnknownObjCClass, |
4344 | bool ObjCPropertyAccess, |
4345 | bool AvoidPartialAvailabilityChecks = false, |
4346 | ObjCInterfaceDecl *ClassReceiver = nullptr); |
4347 | |
4348 | bool makeUnavailableInSystemHeader(SourceLocation loc, |
4349 | UnavailableAttr::ImplicitReason reason); |
4350 | |
4351 | /// Issue any -Wunguarded-availability warnings in \c FD |
4352 | void DiagnoseUnguardedAvailabilityViolations(Decl *FD); |
4353 | |
4354 | //===--------------------------------------------------------------------===// |
4355 | // Expression Parsing Callbacks: SemaExpr.cpp. |
4356 | |
4357 | bool CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid); |
4358 | bool DiagnoseUseOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, |
4359 | const ObjCInterfaceDecl *UnknownObjCClass = nullptr, |
4360 | bool ObjCPropertyAccess = false, |
4361 | bool AvoidPartialAvailabilityChecks = false, |
4362 | ObjCInterfaceDecl *ClassReciever = nullptr); |
4363 | void NoteDeletedFunction(FunctionDecl *FD); |
4364 | void NoteDeletedInheritingConstructor(CXXConstructorDecl *CD); |
4365 | bool DiagnosePropertyAccessorMismatch(ObjCPropertyDecl *PD, |
4366 | ObjCMethodDecl *Getter, |
4367 | SourceLocation Loc); |
4368 | void DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, |
4369 | ArrayRef<Expr *> Args); |
4370 | |
4371 | void PushExpressionEvaluationContext( |
4372 | ExpressionEvaluationContext NewContext, Decl *LambdaContextDecl = nullptr, |
4373 | ExpressionEvaluationContextRecord::ExpressionKind Type = |
4374 | ExpressionEvaluationContextRecord::EK_Other); |
4375 | enum ReuseLambdaContextDecl_t { ReuseLambdaContextDecl }; |
4376 | void PushExpressionEvaluationContext( |
4377 | ExpressionEvaluationContext NewContext, ReuseLambdaContextDecl_t, |
4378 | ExpressionEvaluationContextRecord::ExpressionKind Type = |
4379 | ExpressionEvaluationContextRecord::EK_Other); |
4380 | void PopExpressionEvaluationContext(); |
4381 | |
4382 | void DiscardCleanupsInEvaluationContext(); |
4383 | |
4384 | ExprResult TransformToPotentiallyEvaluated(Expr *E); |
4385 | ExprResult HandleExprEvaluationContextForTypeof(Expr *E); |
4386 | |
4387 | ExprResult CheckUnevaluatedOperand(Expr *E); |
4388 | void CheckUnusedVolatileAssignment(Expr *E); |
4389 | |
4390 | ExprResult ActOnConstantExpression(ExprResult Res); |
4391 | |
4392 | // Functions for marking a declaration referenced. These functions also |
4393 | // contain the relevant logic for marking if a reference to a function or |
4394 | // variable is an odr-use (in the C++11 sense). There are separate variants |
4395 | // for expressions referring to a decl; these exist because odr-use marking |
4396 | // needs to be delayed for some constant variables when we build one of the |
4397 | // named expressions. |
4398 | // |
4399 | // MightBeOdrUse indicates whether the use could possibly be an odr-use, and |
4400 | // should usually be true. This only needs to be set to false if the lack of |
4401 | // odr-use cannot be determined from the current context (for instance, |
4402 | // because the name denotes a virtual function and was written without an |
4403 | // explicit nested-name-specifier). |
4404 | void MarkAnyDeclReferenced(SourceLocation Loc, Decl *D, bool MightBeOdrUse); |
4405 | void MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func, |
4406 | bool MightBeOdrUse = true); |
4407 | void MarkVariableReferenced(SourceLocation Loc, VarDecl *Var); |
4408 | void MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base = nullptr); |
4409 | void MarkMemberReferenced(MemberExpr *E); |
4410 | void MarkFunctionParmPackReferenced(FunctionParmPackExpr *E); |
4411 | void MarkCaptureUsedInEnclosingContext(VarDecl *Capture, SourceLocation Loc, |
4412 | unsigned CapturingScopeIndex); |
4413 | |
4414 | ExprResult CheckLValueToRValueConversionOperand(Expr *E); |
4415 | void CleanupVarDeclMarking(); |
4416 | |
4417 | enum TryCaptureKind { |
4418 | TryCapture_Implicit, TryCapture_ExplicitByVal, TryCapture_ExplicitByRef |
4419 | }; |
4420 | |
4421 | /// Try to capture the given variable. |
4422 | /// |
4423 | /// \param Var The variable to capture. |
4424 | /// |
4425 | /// \param Loc The location at which the capture occurs. |
4426 | /// |
4427 | /// \param Kind The kind of capture, which may be implicit (for either a |
4428 | /// block or a lambda), or explicit by-value or by-reference (for a lambda). |
4429 | /// |
4430 | /// \param EllipsisLoc The location of the ellipsis, if one is provided in |
4431 | /// an explicit lambda capture. |
4432 | /// |
4433 | /// \param BuildAndDiagnose Whether we are actually supposed to add the |
4434 | /// captures or diagnose errors. If false, this routine merely check whether |
4435 | /// the capture can occur without performing the capture itself or complaining |
4436 | /// if the variable cannot be captured. |
4437 | /// |
4438 | /// \param CaptureType Will be set to the type of the field used to capture |
4439 | /// this variable in the innermost block or lambda. Only valid when the |
4440 | /// variable can be captured. |
4441 | /// |
4442 | /// \param DeclRefType Will be set to the type of a reference to the capture |
4443 | /// from within the current scope. Only valid when the variable can be |
4444 | /// captured. |
4445 | /// |
4446 | /// \param FunctionScopeIndexToStopAt If non-null, it points to the index |
4447 | /// of the FunctionScopeInfo stack beyond which we do not attempt to capture. |
4448 | /// This is useful when enclosing lambdas must speculatively capture |
4449 | /// variables that may or may not be used in certain specializations of |
4450 | /// a nested generic lambda. |
4451 | /// |
4452 | /// \returns true if an error occurred (i.e., the variable cannot be |
4453 | /// captured) and false if the capture succeeded. |
4454 | bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, TryCaptureKind Kind, |
4455 | SourceLocation EllipsisLoc, bool BuildAndDiagnose, |
4456 | QualType &CaptureType, |
4457 | QualType &DeclRefType, |
4458 | const unsigned *const FunctionScopeIndexToStopAt); |
4459 | |
4460 | /// Try to capture the given variable. |
4461 | bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, |
4462 | TryCaptureKind Kind = TryCapture_Implicit, |
4463 | SourceLocation EllipsisLoc = SourceLocation()); |
4464 | |
4465 | /// Checks if the variable must be captured. |
4466 | bool NeedToCaptureVariable(VarDecl *Var, SourceLocation Loc); |
4467 | |
4468 | /// Given a variable, determine the type that a reference to that |
4469 | /// variable will have in the given scope. |
4470 | QualType getCapturedDeclRefType(VarDecl *Var, SourceLocation Loc); |
4471 | |
4472 | /// Mark all of the declarations referenced within a particular AST node as |
4473 | /// referenced. Used when template instantiation instantiates a non-dependent |
4474 | /// type -- entities referenced by the type are now referenced. |
4475 | void MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T); |
4476 | void MarkDeclarationsReferencedInExpr(Expr *E, |
4477 | bool SkipLocalVariables = false); |
4478 | |
4479 | /// Try to recover by turning the given expression into a |
4480 | /// call. Returns true if recovery was attempted or an error was |
4481 | /// emitted; this may also leave the ExprResult invalid. |
4482 | bool tryToRecoverWithCall(ExprResult &E, const PartialDiagnostic &PD, |
4483 | bool ForceComplain = false, |
4484 | bool (*IsPlausibleResult)(QualType) = nullptr); |
4485 | |
4486 | /// Figure out if an expression could be turned into a call. |
4487 | bool tryExprAsCall(Expr &E, QualType &ZeroArgCallReturnTy, |
4488 | UnresolvedSetImpl &NonTemplateOverloads); |
4489 | |
4490 | /// Conditionally issue a diagnostic based on the current |
4491 | /// evaluation context. |
4492 | /// |
4493 | /// \param Statement If Statement is non-null, delay reporting the |
4494 | /// diagnostic until the function body is parsed, and then do a basic |
4495 | /// reachability analysis to determine if the statement is reachable. |
4496 | /// If it is unreachable, the diagnostic will not be emitted. |
4497 | bool DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, |
4498 | const PartialDiagnostic &PD); |
4499 | /// Similar, but diagnostic is only produced if all the specified statements |
4500 | /// are reachable. |
4501 | bool DiagRuntimeBehavior(SourceLocation Loc, ArrayRef<const Stmt*> Stmts, |
4502 | const PartialDiagnostic &PD); |
4503 | |
4504 | // Primary Expressions. |
4505 | SourceRange getExprRange(Expr *E) const; |
4506 | |
4507 | ExprResult ActOnIdExpression( |
4508 | Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
4509 | UnqualifiedId &Id, bool HasTrailingLParen, bool IsAddressOfOperand, |
4510 | CorrectionCandidateCallback *CCC = nullptr, |
4511 | bool IsInlineAsmIdentifier = false, Token *KeywordReplacement = nullptr); |
4512 | |
4513 | void DecomposeUnqualifiedId(const UnqualifiedId &Id, |
4514 | TemplateArgumentListInfo &Buffer, |
4515 | DeclarationNameInfo &NameInfo, |
4516 | const TemplateArgumentListInfo *&TemplateArgs); |
4517 | |
4518 | bool |
4519 | DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, |
4520 | CorrectionCandidateCallback &CCC, |
4521 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr, |
4522 | ArrayRef<Expr *> Args = None, TypoExpr **Out = nullptr); |
4523 | |
4524 | DeclResult LookupIvarInObjCMethod(LookupResult &Lookup, Scope *S, |
4525 | IdentifierInfo *II); |
4526 | ExprResult BuildIvarRefExpr(Scope *S, SourceLocation Loc, ObjCIvarDecl *IV); |
4527 | |
4528 | ExprResult LookupInObjCMethod(LookupResult &LookUp, Scope *S, |
4529 | IdentifierInfo *II, |
4530 | bool AllowBuiltinCreation=false); |
4531 | |
4532 | ExprResult ActOnDependentIdExpression(const CXXScopeSpec &SS, |
4533 | SourceLocation TemplateKWLoc, |
4534 | const DeclarationNameInfo &NameInfo, |
4535 | bool isAddressOfOperand, |
4536 | const TemplateArgumentListInfo *TemplateArgs); |
4537 | |
4538 | /// If \p D cannot be odr-used in the current expression evaluation context, |
4539 | /// return a reason explaining why. Otherwise, return NOUR_None. |
4540 | NonOdrUseReason getNonOdrUseReasonInCurrentContext(ValueDecl *D); |
4541 | |
4542 | DeclRefExpr *BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, |
4543 | SourceLocation Loc, |
4544 | const CXXScopeSpec *SS = nullptr); |
4545 | DeclRefExpr * |
4546 | BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, |
4547 | const DeclarationNameInfo &NameInfo, |
4548 | const CXXScopeSpec *SS = nullptr, |
4549 | NamedDecl *FoundD = nullptr, |
4550 | SourceLocation TemplateKWLoc = SourceLocation(), |
4551 | const TemplateArgumentListInfo *TemplateArgs = nullptr); |
4552 | DeclRefExpr * |
4553 | BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, |
4554 | const DeclarationNameInfo &NameInfo, |
4555 | NestedNameSpecifierLoc NNS, |
4556 | NamedDecl *FoundD = nullptr, |
4557 | SourceLocation TemplateKWLoc = SourceLocation(), |
4558 | const TemplateArgumentListInfo *TemplateArgs = nullptr); |
4559 | |
4560 | ExprResult |
4561 | BuildAnonymousStructUnionMemberReference( |
4562 | const CXXScopeSpec &SS, |
4563 | SourceLocation nameLoc, |
4564 | IndirectFieldDecl *indirectField, |
4565 | DeclAccessPair FoundDecl = DeclAccessPair::make(nullptr, AS_none), |
4566 | Expr *baseObjectExpr = nullptr, |
4567 | SourceLocation opLoc = SourceLocation()); |
4568 | |
4569 | ExprResult BuildPossibleImplicitMemberExpr(const CXXScopeSpec &SS, |
4570 | SourceLocation TemplateKWLoc, |
4571 | LookupResult &R, |
4572 | const TemplateArgumentListInfo *TemplateArgs, |
4573 | const Scope *S); |
4574 | ExprResult BuildImplicitMemberExpr(const CXXScopeSpec &SS, |
4575 | SourceLocation TemplateKWLoc, |
4576 | LookupResult &R, |
4577 | const TemplateArgumentListInfo *TemplateArgs, |
4578 | bool IsDefiniteInstance, |
4579 | const Scope *S); |
4580 | bool UseArgumentDependentLookup(const CXXScopeSpec &SS, |
4581 | const LookupResult &R, |
4582 | bool HasTrailingLParen); |
4583 | |
4584 | ExprResult |
4585 | BuildQualifiedDeclarationNameExpr(CXXScopeSpec &SS, |
4586 | const DeclarationNameInfo &NameInfo, |
4587 | bool IsAddressOfOperand, const Scope *S, |
4588 | TypeSourceInfo **RecoveryTSI = nullptr); |
4589 | |
4590 | ExprResult BuildDependentDeclRefExpr(const CXXScopeSpec &SS, |
4591 | SourceLocation TemplateKWLoc, |
4592 | const DeclarationNameInfo &NameInfo, |
4593 | const TemplateArgumentListInfo *TemplateArgs); |
4594 | |
4595 | ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, |
4596 | LookupResult &R, |
4597 | bool NeedsADL, |
4598 | bool AcceptInvalidDecl = false); |
4599 | ExprResult BuildDeclarationNameExpr( |
4600 | const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, |
4601 | NamedDecl *FoundD = nullptr, |
4602 | const TemplateArgumentListInfo *TemplateArgs = nullptr, |
4603 | bool AcceptInvalidDecl = false); |
4604 | |
4605 | ExprResult BuildLiteralOperatorCall(LookupResult &R, |
4606 | DeclarationNameInfo &SuffixInfo, |
4607 | ArrayRef<Expr *> Args, |
4608 | SourceLocation LitEndLoc, |
4609 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr); |
4610 | |
4611 | ExprResult BuildPredefinedExpr(SourceLocation Loc, |
4612 | PredefinedExpr::IdentKind IK); |
4613 | ExprResult ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind); |
4614 | ExprResult ActOnIntegerConstant(SourceLocation Loc, uint64_t Val); |
4615 | |
4616 | bool CheckLoopHintExpr(Expr *E, SourceLocation Loc); |
4617 | |
4618 | ExprResult ActOnNumericConstant(const Token &Tok, Scope *UDLScope = nullptr); |
4619 | ExprResult ActOnCharacterConstant(const Token &Tok, |
4620 | Scope *UDLScope = nullptr); |
4621 | ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E); |
4622 | ExprResult ActOnParenListExpr(SourceLocation L, |
4623 | SourceLocation R, |
4624 | MultiExprArg Val); |
4625 | |
4626 | /// ActOnStringLiteral - The specified tokens were lexed as pasted string |
4627 | /// fragments (e.g. "foo" "bar" L"baz"). |
4628 | ExprResult ActOnStringLiteral(ArrayRef<Token> StringToks, |
4629 | Scope *UDLScope = nullptr); |
4630 | |
4631 | ExprResult ActOnGenericSelectionExpr(SourceLocation KeyLoc, |
4632 | SourceLocation DefaultLoc, |
4633 | SourceLocation RParenLoc, |
4634 | Expr *ControllingExpr, |
4635 | ArrayRef<ParsedType> ArgTypes, |
4636 | ArrayRef<Expr *> ArgExprs); |
4637 | ExprResult CreateGenericSelectionExpr(SourceLocation KeyLoc, |
4638 | SourceLocation DefaultLoc, |
4639 | SourceLocation RParenLoc, |
4640 | Expr *ControllingExpr, |
4641 | ArrayRef<TypeSourceInfo *> Types, |
4642 | ArrayRef<Expr *> Exprs); |
4643 | |
4644 | // Binary/Unary Operators. 'Tok' is the token for the operator. |
4645 | ExprResult CreateBuiltinUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc, |
4646 | Expr *InputExpr); |
4647 | ExprResult BuildUnaryOp(Scope *S, SourceLocation OpLoc, |
4648 | UnaryOperatorKind Opc, Expr *Input); |
4649 | ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc, |
4650 | tok::TokenKind Op, Expr *Input); |
4651 | |
4652 | bool isQualifiedMemberAccess(Expr *E); |
4653 | QualType CheckAddressOfOperand(ExprResult &Operand, SourceLocation OpLoc); |
4654 | |
4655 | ExprResult CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, |
4656 | SourceLocation OpLoc, |
4657 | UnaryExprOrTypeTrait ExprKind, |
4658 | SourceRange R); |
4659 | ExprResult CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, |
4660 | UnaryExprOrTypeTrait ExprKind); |
4661 | ExprResult |
4662 | ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, |
4663 | UnaryExprOrTypeTrait ExprKind, |
4664 | bool IsType, void *TyOrEx, |
4665 | SourceRange ArgRange); |
4666 | |
4667 | ExprResult CheckPlaceholderExpr(Expr *E); |
4668 | bool CheckVecStepExpr(Expr *E); |
4669 | |
4670 | bool CheckUnaryExprOrTypeTraitOperand(Expr *E, UnaryExprOrTypeTrait ExprKind); |
4671 | bool CheckUnaryExprOrTypeTraitOperand(QualType ExprType, SourceLocation OpLoc, |
4672 | SourceRange ExprRange, |
4673 | UnaryExprOrTypeTrait ExprKind); |
4674 | ExprResult ActOnSizeofParameterPackExpr(Scope *S, |
4675 | SourceLocation OpLoc, |
4676 | IdentifierInfo &Name, |
4677 | SourceLocation NameLoc, |
4678 | SourceLocation RParenLoc); |
4679 | ExprResult ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, |
4680 | tok::TokenKind Kind, Expr *Input); |
4681 | |
4682 | ExprResult ActOnArraySubscriptExpr(Scope *S, Expr *Base, SourceLocation LLoc, |
4683 | Expr *Idx, SourceLocation RLoc); |
4684 | ExprResult CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, |
4685 | Expr *Idx, SourceLocation RLoc); |
4686 | ExprResult ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, |
4687 | Expr *LowerBound, SourceLocation ColonLoc, |
4688 | Expr *Length, SourceLocation RBLoc); |
4689 | |
4690 | // This struct is for use by ActOnMemberAccess to allow |
4691 | // BuildMemberReferenceExpr to be able to reinvoke ActOnMemberAccess after |
4692 | // changing the access operator from a '.' to a '->' (to see if that is the |
4693 | // change needed to fix an error about an unknown member, e.g. when the class |
4694 | // defines a custom operator->). |
4695 | struct ActOnMemberAccessExtraArgs { |
4696 | Scope *S; |
4697 | UnqualifiedId &Id; |
4698 | Decl *ObjCImpDecl; |
4699 | }; |
4700 | |
4701 | ExprResult BuildMemberReferenceExpr( |
4702 | Expr *Base, QualType BaseType, SourceLocation OpLoc, bool IsArrow, |
4703 | CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
4704 | NamedDecl *FirstQualifierInScope, const DeclarationNameInfo &NameInfo, |
4705 | const TemplateArgumentListInfo *TemplateArgs, |
4706 | const Scope *S, |
4707 | ActOnMemberAccessExtraArgs *ExtraArgs = nullptr); |
4708 | |
4709 | ExprResult |
4710 | BuildMemberReferenceExpr(Expr *Base, QualType BaseType, SourceLocation OpLoc, |
4711 | bool IsArrow, const CXXScopeSpec &SS, |
4712 | SourceLocation TemplateKWLoc, |
4713 | NamedDecl *FirstQualifierInScope, LookupResult &R, |
4714 | const TemplateArgumentListInfo *TemplateArgs, |
4715 | const Scope *S, |
4716 | bool SuppressQualifierCheck = false, |
4717 | ActOnMemberAccessExtraArgs *ExtraArgs = nullptr); |
4718 | |
4719 | ExprResult BuildFieldReferenceExpr(Expr *BaseExpr, bool IsArrow, |
4720 | SourceLocation OpLoc, |
4721 | const CXXScopeSpec &SS, FieldDecl *Field, |
4722 | DeclAccessPair FoundDecl, |
4723 | const DeclarationNameInfo &MemberNameInfo); |
4724 | |
4725 | ExprResult PerformMemberExprBaseConversion(Expr *Base, bool IsArrow); |
4726 | |
4727 | bool CheckQualifiedMemberReference(Expr *BaseExpr, QualType BaseType, |
4728 | const CXXScopeSpec &SS, |
4729 | const LookupResult &R); |
4730 | |
4731 | ExprResult ActOnDependentMemberExpr(Expr *Base, QualType BaseType, |
4732 | bool IsArrow, SourceLocation OpLoc, |
4733 | const CXXScopeSpec &SS, |
4734 | SourceLocation TemplateKWLoc, |
4735 | NamedDecl *FirstQualifierInScope, |
4736 | const DeclarationNameInfo &NameInfo, |
4737 | const TemplateArgumentListInfo *TemplateArgs); |
4738 | |
4739 | ExprResult ActOnMemberAccessExpr(Scope *S, Expr *Base, |
4740 | SourceLocation OpLoc, |
4741 | tok::TokenKind OpKind, |
4742 | CXXScopeSpec &SS, |
4743 | SourceLocation TemplateKWLoc, |
4744 | UnqualifiedId &Member, |
4745 | Decl *ObjCImpDecl); |
4746 | |
4747 | MemberExpr * |
4748 | BuildMemberExpr(Expr *Base, bool IsArrow, SourceLocation OpLoc, |
4749 | const CXXScopeSpec *SS, SourceLocation TemplateKWLoc, |
4750 | ValueDecl *Member, DeclAccessPair FoundDecl, |
4751 | bool HadMultipleCandidates, |
4752 | const DeclarationNameInfo &MemberNameInfo, QualType Ty, |
4753 | ExprValueKind VK, ExprObjectKind OK, |
4754 | const TemplateArgumentListInfo *TemplateArgs = nullptr); |
4755 | MemberExpr * |
4756 | BuildMemberExpr(Expr *Base, bool IsArrow, SourceLocation OpLoc, |
4757 | NestedNameSpecifierLoc NNS, SourceLocation TemplateKWLoc, |
4758 | ValueDecl *Member, DeclAccessPair FoundDecl, |
4759 | bool HadMultipleCandidates, |
4760 | const DeclarationNameInfo &MemberNameInfo, QualType Ty, |
4761 | ExprValueKind VK, ExprObjectKind OK, |
4762 | const TemplateArgumentListInfo *TemplateArgs = nullptr); |
4763 | |
4764 | void ActOnDefaultCtorInitializers(Decl *CDtorDecl); |
4765 | bool ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, |
4766 | FunctionDecl *FDecl, |
4767 | const FunctionProtoType *Proto, |
4768 | ArrayRef<Expr *> Args, |
4769 | SourceLocation RParenLoc, |
4770 | bool ExecConfig = false); |
4771 | void CheckStaticArrayArgument(SourceLocation CallLoc, |
4772 | ParmVarDecl *Param, |
4773 | const Expr *ArgExpr); |
4774 | |
4775 | /// ActOnCallExpr - Handle a call to Fn with the specified array of arguments. |
4776 | /// This provides the location of the left/right parens and a list of comma |
4777 | /// locations. |
4778 | ExprResult ActOnCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc, |
4779 | MultiExprArg ArgExprs, SourceLocation RParenLoc, |
4780 | Expr *ExecConfig = nullptr); |
4781 | ExprResult BuildCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc, |
4782 | MultiExprArg ArgExprs, SourceLocation RParenLoc, |
4783 | Expr *ExecConfig = nullptr, |
4784 | bool IsExecConfig = false); |
4785 | enum class AtomicArgumentOrder { API, AST }; |
4786 | ExprResult |
4787 | BuildAtomicExpr(SourceRange CallRange, SourceRange ExprRange, |
4788 | SourceLocation RParenLoc, MultiExprArg Args, |
4789 | AtomicExpr::AtomicOp Op, |
4790 | AtomicArgumentOrder ArgOrder = AtomicArgumentOrder::API); |
4791 | ExprResult |
4792 | BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, SourceLocation LParenLoc, |
4793 | ArrayRef<Expr *> Arg, SourceLocation RParenLoc, |
4794 | Expr *Config = nullptr, bool IsExecConfig = false, |
4795 | ADLCallKind UsesADL = ADLCallKind::NotADL); |
4796 | |
4797 | ExprResult ActOnCUDAExecConfigExpr(Scope *S, SourceLocation LLLLoc, |
4798 | MultiExprArg ExecConfig, |
4799 | SourceLocation GGGLoc); |
4800 | |
4801 | ExprResult ActOnCastExpr(Scope *S, SourceLocation LParenLoc, |
4802 | Declarator &D, ParsedType &Ty, |
4803 | SourceLocation RParenLoc, Expr *CastExpr); |
4804 | ExprResult BuildCStyleCastExpr(SourceLocation LParenLoc, |
4805 | TypeSourceInfo *Ty, |
4806 | SourceLocation RParenLoc, |
4807 | Expr *Op); |
4808 | CastKind PrepareScalarCast(ExprResult &src, QualType destType); |
4809 | |
4810 | /// Build an altivec or OpenCL literal. |
4811 | ExprResult BuildVectorLiteral(SourceLocation LParenLoc, |
4812 | SourceLocation RParenLoc, Expr *E, |
4813 | TypeSourceInfo *TInfo); |
4814 | |
4815 | ExprResult MaybeConvertParenListExprToParenExpr(Scope *S, Expr *ME); |
4816 | |
4817 | ExprResult ActOnCompoundLiteral(SourceLocation LParenLoc, |
4818 | ParsedType Ty, |
4819 | SourceLocation RParenLoc, |
4820 | Expr *InitExpr); |
4821 | |
4822 | ExprResult BuildCompoundLiteralExpr(SourceLocation LParenLoc, |
4823 | TypeSourceInfo *TInfo, |
4824 | SourceLocation RParenLoc, |
4825 | Expr *LiteralExpr); |
4826 | |
4827 | ExprResult ActOnInitList(SourceLocation LBraceLoc, |
4828 | MultiExprArg InitArgList, |
4829 | SourceLocation RBraceLoc); |
4830 | |
4831 | ExprResult BuildInitList(SourceLocation LBraceLoc, |
4832 | MultiExprArg InitArgList, |
4833 | SourceLocation RBraceLoc); |
4834 | |
4835 | ExprResult ActOnDesignatedInitializer(Designation &Desig, |
4836 | SourceLocation EqualOrColonLoc, |
4837 | bool GNUSyntax, |
4838 | ExprResult Init); |
4839 | |
4840 | private: |
4841 | static BinaryOperatorKind ConvertTokenKindToBinaryOpcode(tok::TokenKind Kind); |
4842 | |
4843 | public: |
4844 | ExprResult ActOnBinOp(Scope *S, SourceLocation TokLoc, |
4845 | tok::TokenKind Kind, Expr *LHSExpr, Expr *RHSExpr); |
4846 | ExprResult BuildBinOp(Scope *S, SourceLocation OpLoc, |
4847 | BinaryOperatorKind Opc, Expr *LHSExpr, Expr *RHSExpr); |
4848 | ExprResult CreateBuiltinBinOp(SourceLocation OpLoc, BinaryOperatorKind Opc, |
4849 | Expr *LHSExpr, Expr *RHSExpr); |
4850 | |
4851 | void DiagnoseCommaOperator(const Expr *LHS, SourceLocation Loc); |
4852 | |
4853 | /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null |
4854 | /// in the case of a the GNU conditional expr extension. |
4855 | ExprResult ActOnConditionalOp(SourceLocation QuestionLoc, |
4856 | SourceLocation ColonLoc, |
4857 | Expr *CondExpr, Expr *LHSExpr, Expr *RHSExpr); |
4858 | |
4859 | /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". |
4860 | ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, |
4861 | LabelDecl *TheDecl); |
4862 | |
4863 | void ActOnStartStmtExpr(); |
4864 | ExprResult ActOnStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, |
4865 | SourceLocation RPLoc); // "({..})" |
4866 | // Handle the final expression in a statement expression. |
4867 | ExprResult ActOnStmtExprResult(ExprResult E); |
4868 | void ActOnStmtExprError(); |
4869 | |
4870 | // __builtin_offsetof(type, identifier(.identifier|[expr])*) |
4871 | struct OffsetOfComponent { |
4872 | SourceLocation LocStart, LocEnd; |
4873 | bool isBrackets; // true if [expr], false if .ident |
4874 | union { |
4875 | IdentifierInfo *IdentInfo; |
4876 | Expr *E; |
4877 | } U; |
4878 | }; |
4879 | |
4880 | /// __builtin_offsetof(type, a.b[123][456].c) |
4881 | ExprResult BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, |
4882 | TypeSourceInfo *TInfo, |
4883 | ArrayRef<OffsetOfComponent> Components, |
4884 | SourceLocation RParenLoc); |
4885 | ExprResult ActOnBuiltinOffsetOf(Scope *S, |
4886 | SourceLocation BuiltinLoc, |
4887 | SourceLocation TypeLoc, |
4888 | ParsedType ParsedArgTy, |
4889 | ArrayRef<OffsetOfComponent> Components, |
4890 | SourceLocation RParenLoc); |
4891 | |
4892 | // __builtin_choose_expr(constExpr, expr1, expr2) |
4893 | ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc, |
4894 | Expr *CondExpr, Expr *LHSExpr, |
4895 | Expr *RHSExpr, SourceLocation RPLoc); |
4896 | |
4897 | // __builtin_va_arg(expr, type) |
4898 | ExprResult ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, |
4899 | SourceLocation RPLoc); |
4900 | ExprResult BuildVAArgExpr(SourceLocation BuiltinLoc, Expr *E, |
4901 | TypeSourceInfo *TInfo, SourceLocation RPLoc); |
4902 | |
4903 | // __builtin_LINE(), __builtin_FUNCTION(), __builtin_FILE(), |
4904 | // __builtin_COLUMN() |
4905 | ExprResult ActOnSourceLocExpr(SourceLocExpr::IdentKind Kind, |
4906 | SourceLocation BuiltinLoc, |
4907 | SourceLocation RPLoc); |
4908 | |
4909 | // Build a potentially resolved SourceLocExpr. |
4910 | ExprResult BuildSourceLocExpr(SourceLocExpr::IdentKind Kind, |
4911 | SourceLocation BuiltinLoc, SourceLocation RPLoc, |
4912 | DeclContext *ParentContext); |
4913 | |
4914 | // __null |
4915 | ExprResult ActOnGNUNullExpr(SourceLocation TokenLoc); |
4916 | |
4917 | bool CheckCaseExpression(Expr *E); |
4918 | |
4919 | /// Describes the result of an "if-exists" condition check. |
4920 | enum IfExistsResult { |
4921 | /// The symbol exists. |
4922 | IER_Exists, |
4923 | |
4924 | /// The symbol does not exist. |
4925 | IER_DoesNotExist, |
4926 | |
4927 | /// The name is a dependent name, so the results will differ |
4928 | /// from one instantiation to the next. |
4929 | IER_Dependent, |
4930 | |
4931 | /// An error occurred. |
4932 | IER_Error |
4933 | }; |
4934 | |
4935 | IfExistsResult |
4936 | CheckMicrosoftIfExistsSymbol(Scope *S, CXXScopeSpec &SS, |
4937 | const DeclarationNameInfo &TargetNameInfo); |
4938 | |
4939 | IfExistsResult |
4940 | CheckMicrosoftIfExistsSymbol(Scope *S, SourceLocation KeywordLoc, |
4941 | bool IsIfExists, CXXScopeSpec &SS, |
4942 | UnqualifiedId &Name); |
4943 | |
4944 | StmtResult BuildMSDependentExistsStmt(SourceLocation KeywordLoc, |
4945 | bool IsIfExists, |
4946 | NestedNameSpecifierLoc QualifierLoc, |
4947 | DeclarationNameInfo NameInfo, |
4948 | Stmt *Nested); |
4949 | StmtResult ActOnMSDependentExistsStmt(SourceLocation KeywordLoc, |
4950 | bool IsIfExists, |
4951 | CXXScopeSpec &SS, UnqualifiedId &Name, |
4952 | Stmt *Nested); |
4953 | |
4954 | //===------------------------- "Block" Extension ------------------------===// |
4955 | |
4956 | /// ActOnBlockStart - This callback is invoked when a block literal is |
4957 | /// started. |
4958 | void ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope); |
4959 | |
4960 | /// ActOnBlockArguments - This callback allows processing of block arguments. |
4961 | /// If there are no arguments, this is still invoked. |
4962 | void ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo, |
4963 | Scope *CurScope); |
4964 | |
4965 | /// ActOnBlockError - If there is an error parsing a block, this callback |
4966 | /// is invoked to pop the information about the block from the action impl. |
4967 | void ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope); |
4968 | |
4969 | /// ActOnBlockStmtExpr - This is called when the body of a block statement |
4970 | /// literal was successfully completed. ^(int x){...} |
4971 | ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, Stmt *Body, |
4972 | Scope *CurScope); |
4973 | |
4974 | //===---------------------------- Clang Extensions ----------------------===// |
4975 | |
4976 | /// __builtin_convertvector(...) |
4977 | ExprResult ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, |
4978 | SourceLocation BuiltinLoc, |
4979 | SourceLocation RParenLoc); |
4980 | |
4981 | //===---------------------------- OpenCL Features -----------------------===// |
4982 | |
4983 | /// __builtin_astype(...) |
4984 | ExprResult ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, |
4985 | SourceLocation BuiltinLoc, |
4986 | SourceLocation RParenLoc); |
4987 | |
4988 | //===---------------------------- C++ Features --------------------------===// |
4989 | |
4990 | // Act on C++ namespaces |
4991 | Decl *ActOnStartNamespaceDef(Scope *S, SourceLocation InlineLoc, |
4992 | SourceLocation NamespaceLoc, |
4993 | SourceLocation IdentLoc, IdentifierInfo *Ident, |
4994 | SourceLocation LBrace, |
4995 | const ParsedAttributesView &AttrList, |
4996 | UsingDirectiveDecl *&UsingDecl); |
4997 | void ActOnFinishNamespaceDef(Decl *Dcl, SourceLocation RBrace); |
4998 | |
4999 | NamespaceDecl *getStdNamespace() const; |
5000 | NamespaceDecl *getOrCreateStdNamespace(); |
5001 | |
5002 | NamespaceDecl *lookupStdExperimentalNamespace(); |
5003 | |
5004 | CXXRecordDecl *getStdBadAlloc() const; |
5005 | EnumDecl *getStdAlignValT() const; |
5006 | |
5007 | private: |
5008 | // A cache representing if we've fully checked the various comparison category |
5009 | // types stored in ASTContext. The bit-index corresponds to the integer value |
5010 | // of a ComparisonCategoryType enumerator. |
5011 | llvm::SmallBitVector FullyCheckedComparisonCategories; |
5012 | |
5013 | ValueDecl *tryLookupCtorInitMemberDecl(CXXRecordDecl *ClassDecl, |
5014 | CXXScopeSpec &SS, |
5015 | ParsedType TemplateTypeTy, |
5016 | IdentifierInfo *MemberOrBase); |
5017 | |
5018 | public: |
5019 | /// Lookup the specified comparison category types in the standard |
5020 | /// library, an check the VarDecls possibly returned by the operator<=> |
5021 | /// builtins for that type. |
5022 | /// |
5023 | /// \return The type of the comparison category type corresponding to the |
5024 | /// specified Kind, or a null type if an error occurs |
5025 | QualType CheckComparisonCategoryType(ComparisonCategoryType Kind, |
5026 | SourceLocation Loc); |
5027 | |
5028 | /// Tests whether Ty is an instance of std::initializer_list and, if |
5029 | /// it is and Element is not NULL, assigns the element type to Element. |
5030 | bool isStdInitializerList(QualType Ty, QualType *Element); |
5031 | |
5032 | /// Looks for the std::initializer_list template and instantiates it |
5033 | /// with Element, or emits an error if it's not found. |
5034 | /// |
5035 | /// \returns The instantiated template, or null on error. |
5036 | QualType BuildStdInitializerList(QualType Element, SourceLocation Loc); |
5037 | |
5038 | /// Determine whether Ctor is an initializer-list constructor, as |
5039 | /// defined in [dcl.init.list]p2. |
5040 | bool isInitListConstructor(const FunctionDecl *Ctor); |
5041 | |
5042 | Decl *ActOnUsingDirective(Scope *CurScope, SourceLocation UsingLoc, |
5043 | SourceLocation NamespcLoc, CXXScopeSpec &SS, |
5044 | SourceLocation IdentLoc, |
5045 | IdentifierInfo *NamespcName, |
5046 | const ParsedAttributesView &AttrList); |
5047 | |
5048 | void PushUsingDirective(Scope *S, UsingDirectiveDecl *UDir); |
5049 | |
5050 | Decl *ActOnNamespaceAliasDef(Scope *CurScope, |
5051 | SourceLocation NamespaceLoc, |
5052 | SourceLocation AliasLoc, |
5053 | IdentifierInfo *Alias, |
5054 | CXXScopeSpec &SS, |
5055 | SourceLocation IdentLoc, |
5056 | IdentifierInfo *Ident); |
5057 | |
5058 | void HideUsingShadowDecl(Scope *S, UsingShadowDecl *Shadow); |
5059 | bool CheckUsingShadowDecl(UsingDecl *UD, NamedDecl *Target, |
5060 | const LookupResult &PreviousDecls, |
5061 | UsingShadowDecl *&PrevShadow); |
5062 | UsingShadowDecl *BuildUsingShadowDecl(Scope *S, UsingDecl *UD, |
5063 | NamedDecl *Target, |
5064 | UsingShadowDecl *PrevDecl); |
5065 | |
5066 | bool CheckUsingDeclRedeclaration(SourceLocation UsingLoc, |
5067 | bool HasTypenameKeyword, |
5068 | const CXXScopeSpec &SS, |
5069 | SourceLocation NameLoc, |
5070 | const LookupResult &Previous); |
5071 | bool CheckUsingDeclQualifier(SourceLocation UsingLoc, |
5072 | bool HasTypename, |
5073 | const CXXScopeSpec &SS, |
5074 | const DeclarationNameInfo &NameInfo, |
5075 | SourceLocation NameLoc); |
5076 | |
5077 | NamedDecl *BuildUsingDeclaration( |
5078 | Scope *S, AccessSpecifier AS, SourceLocation UsingLoc, |
5079 | bool HasTypenameKeyword, SourceLocation TypenameLoc, CXXScopeSpec &SS, |
5080 | DeclarationNameInfo NameInfo, SourceLocation EllipsisLoc, |
5081 | const ParsedAttributesView &AttrList, bool IsInstantiation); |
5082 | NamedDecl *BuildUsingPackDecl(NamedDecl *InstantiatedFrom, |
5083 | ArrayRef<NamedDecl *> Expansions); |
5084 | |
5085 | bool CheckInheritingConstructorUsingDecl(UsingDecl *UD); |
5086 | |
5087 | /// Given a derived-class using shadow declaration for a constructor and the |
5088 | /// correspnding base class constructor, find or create the implicit |
5089 | /// synthesized derived class constructor to use for this initialization. |
5090 | CXXConstructorDecl * |
5091 | findInheritingConstructor(SourceLocation Loc, CXXConstructorDecl *BaseCtor, |
5092 | ConstructorUsingShadowDecl *DerivedShadow); |
5093 | |
5094 | Decl *ActOnUsingDeclaration(Scope *CurScope, AccessSpecifier AS, |
5095 | SourceLocation UsingLoc, |
5096 | SourceLocation TypenameLoc, CXXScopeSpec &SS, |
5097 | UnqualifiedId &Name, SourceLocation EllipsisLoc, |
5098 | const ParsedAttributesView &AttrList); |
5099 | Decl *ActOnAliasDeclaration(Scope *CurScope, AccessSpecifier AS, |
5100 | MultiTemplateParamsArg TemplateParams, |
5101 | SourceLocation UsingLoc, UnqualifiedId &Name, |
5102 | const ParsedAttributesView &AttrList, |
5103 | TypeResult Type, Decl *DeclFromDeclSpec); |
5104 | |
5105 | /// BuildCXXConstructExpr - Creates a complete call to a constructor, |
5106 | /// including handling of its default argument expressions. |
5107 | /// |
5108 | /// \param ConstructKind - a CXXConstructExpr::ConstructionKind |
5109 | ExprResult |
5110 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
5111 | NamedDecl *FoundDecl, |
5112 | CXXConstructorDecl *Constructor, MultiExprArg Exprs, |
5113 | bool HadMultipleCandidates, bool IsListInitialization, |
5114 | bool IsStdInitListInitialization, |
5115 | bool RequiresZeroInit, unsigned ConstructKind, |
5116 | SourceRange ParenRange); |
5117 | |
5118 | /// Build a CXXConstructExpr whose constructor has already been resolved if |
5119 | /// it denotes an inherited constructor. |
5120 | ExprResult |
5121 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
5122 | CXXConstructorDecl *Constructor, bool Elidable, |
5123 | MultiExprArg Exprs, |
5124 | bool HadMultipleCandidates, bool IsListInitialization, |
5125 | bool IsStdInitListInitialization, |
5126 | bool RequiresZeroInit, unsigned ConstructKind, |
5127 | SourceRange ParenRange); |
5128 | |
5129 | // FIXME: Can we remove this and have the above BuildCXXConstructExpr check if |
5130 | // the constructor can be elidable? |
5131 | ExprResult |
5132 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
5133 | NamedDecl *FoundDecl, |
5134 | CXXConstructorDecl *Constructor, bool Elidable, |
5135 | MultiExprArg Exprs, bool HadMultipleCandidates, |
5136 | bool IsListInitialization, |
5137 | bool IsStdInitListInitialization, bool RequiresZeroInit, |
5138 | unsigned ConstructKind, SourceRange ParenRange); |
5139 | |
5140 | ExprResult BuildCXXDefaultInitExpr(SourceLocation Loc, FieldDecl *Field); |
5141 | |
5142 | |
5143 | /// Instantiate or parse a C++ default argument expression as necessary. |
5144 | /// Return true on error. |
5145 | bool CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, |
5146 | ParmVarDecl *Param); |
5147 | |
5148 | /// BuildCXXDefaultArgExpr - Creates a CXXDefaultArgExpr, instantiating |
5149 | /// the default expr if needed. |
5150 | ExprResult BuildCXXDefaultArgExpr(SourceLocation CallLoc, |
5151 | FunctionDecl *FD, |
5152 | ParmVarDecl *Param); |
5153 | |
5154 | /// FinalizeVarWithDestructor - Prepare for calling destructor on the |
5155 | /// constructed variable. |
5156 | void FinalizeVarWithDestructor(VarDecl *VD, const RecordType *DeclInitType); |
5157 | |
5158 | /// Helper class that collects exception specifications for |
5159 | /// implicitly-declared special member functions. |
5160 | class ImplicitExceptionSpecification { |
5161 | // Pointer to allow copying |
5162 | Sema *Self; |
5163 | // We order exception specifications thus: |
5164 | // noexcept is the most restrictive, but is only used in C++11. |
5165 | // throw() comes next. |
5166 | // Then a throw(collected exceptions) |
5167 | // Finally no specification, which is expressed as noexcept(false). |
5168 | // throw(...) is used instead if any called function uses it. |
5169 | ExceptionSpecificationType ComputedEST; |
5170 | llvm::SmallPtrSet<CanQualType, 4> ExceptionsSeen; |
5171 | SmallVector<QualType, 4> Exceptions; |
5172 | |
5173 | void ClearExceptions() { |
5174 | ExceptionsSeen.clear(); |
5175 | Exceptions.clear(); |
5176 | } |
5177 | |
5178 | public: |
5179 | explicit ImplicitExceptionSpecification(Sema &Self) |
5180 | : Self(&Self), ComputedEST(EST_BasicNoexcept) { |
5181 | if (!Self.getLangOpts().CPlusPlus11) |
5182 | ComputedEST = EST_DynamicNone; |
5183 | } |
5184 | |
5185 | /// Get the computed exception specification type. |
5186 | ExceptionSpecificationType getExceptionSpecType() const { |
5187 | assert(!isComputedNoexcept(ComputedEST) &&((!isComputedNoexcept(ComputedEST) && "noexcept(expr) should not be a possible result" ) ? static_cast<void> (0) : __assert_fail ("!isComputedNoexcept(ComputedEST) && \"noexcept(expr) should not be a possible result\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 5188, __PRETTY_FUNCTION__)) |
5188 | "noexcept(expr) should not be a possible result")((!isComputedNoexcept(ComputedEST) && "noexcept(expr) should not be a possible result" ) ? static_cast<void> (0) : __assert_fail ("!isComputedNoexcept(ComputedEST) && \"noexcept(expr) should not be a possible result\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 5188, __PRETTY_FUNCTION__)); |
5189 | return ComputedEST; |
5190 | } |
5191 | |
5192 | /// The number of exceptions in the exception specification. |
5193 | unsigned size() const { return Exceptions.size(); } |
5194 | |
5195 | /// The set of exceptions in the exception specification. |
5196 | const QualType *data() const { return Exceptions.data(); } |
5197 | |
5198 | /// Integrate another called method into the collected data. |
5199 | void CalledDecl(SourceLocation CallLoc, const CXXMethodDecl *Method); |
5200 | |
5201 | /// Integrate an invoked expression into the collected data. |
5202 | void CalledExpr(Expr *E); |
5203 | |
5204 | /// Overwrite an EPI's exception specification with this |
5205 | /// computed exception specification. |
5206 | FunctionProtoType::ExceptionSpecInfo getExceptionSpec() const { |
5207 | FunctionProtoType::ExceptionSpecInfo ESI; |
5208 | ESI.Type = getExceptionSpecType(); |
5209 | if (ESI.Type == EST_Dynamic) { |
5210 | ESI.Exceptions = Exceptions; |
5211 | } else if (ESI.Type == EST_None) { |
5212 | /// C++11 [except.spec]p14: |
5213 | /// The exception-specification is noexcept(false) if the set of |
5214 | /// potential exceptions of the special member function contains "any" |
5215 | ESI.Type = EST_NoexceptFalse; |
5216 | ESI.NoexceptExpr = Self->ActOnCXXBoolLiteral(SourceLocation(), |
5217 | tok::kw_false).get(); |
5218 | } |
5219 | return ESI; |
5220 | } |
5221 | }; |
5222 | |
5223 | /// Determine what sort of exception specification a defaulted |
5224 | /// copy constructor of a class will have. |
5225 | ImplicitExceptionSpecification |
5226 | ComputeDefaultedDefaultCtorExceptionSpec(SourceLocation Loc, |
5227 | CXXMethodDecl *MD); |
5228 | |
5229 | /// Determine what sort of exception specification a defaulted |
5230 | /// default constructor of a class will have, and whether the parameter |
5231 | /// will be const. |
5232 | ImplicitExceptionSpecification |
5233 | ComputeDefaultedCopyCtorExceptionSpec(CXXMethodDecl *MD); |
5234 | |
5235 | /// Determine what sort of exception specification a defaulted |
5236 | /// copy assignment operator of a class will have, and whether the |
5237 | /// parameter will be const. |
5238 | ImplicitExceptionSpecification |
5239 | ComputeDefaultedCopyAssignmentExceptionSpec(CXXMethodDecl *MD); |
5240 | |
5241 | /// Determine what sort of exception specification a defaulted move |
5242 | /// constructor of a class will have. |
5243 | ImplicitExceptionSpecification |
5244 | ComputeDefaultedMoveCtorExceptionSpec(CXXMethodDecl *MD); |
5245 | |
5246 | /// Determine what sort of exception specification a defaulted move |
5247 | /// assignment operator of a class will have. |
5248 | ImplicitExceptionSpecification |
5249 | ComputeDefaultedMoveAssignmentExceptionSpec(CXXMethodDecl *MD); |
5250 | |
5251 | /// Determine what sort of exception specification a defaulted |
5252 | /// destructor of a class will have. |
5253 | ImplicitExceptionSpecification |
5254 | ComputeDefaultedDtorExceptionSpec(CXXMethodDecl *MD); |
5255 | |
5256 | /// Determine what sort of exception specification an inheriting |
5257 | /// constructor of a class will have. |
5258 | ImplicitExceptionSpecification |
5259 | ComputeInheritingCtorExceptionSpec(SourceLocation Loc, |
5260 | CXXConstructorDecl *CD); |
5261 | |
5262 | /// Evaluate the implicit exception specification for a defaulted |
5263 | /// special member function. |
5264 | void EvaluateImplicitExceptionSpec(SourceLocation Loc, CXXMethodDecl *MD); |
5265 | |
5266 | /// Check the given noexcept-specifier, convert its expression, and compute |
5267 | /// the appropriate ExceptionSpecificationType. |
5268 | ExprResult ActOnNoexceptSpec(SourceLocation NoexceptLoc, Expr *NoexceptExpr, |
5269 | ExceptionSpecificationType &EST); |
5270 | |
5271 | /// Check the given exception-specification and update the |
5272 | /// exception specification information with the results. |
5273 | void checkExceptionSpecification(bool IsTopLevel, |
5274 | ExceptionSpecificationType EST, |
5275 | ArrayRef<ParsedType> DynamicExceptions, |
5276 | ArrayRef<SourceRange> DynamicExceptionRanges, |
5277 | Expr *NoexceptExpr, |
5278 | SmallVectorImpl<QualType> &Exceptions, |
5279 | FunctionProtoType::ExceptionSpecInfo &ESI); |
5280 | |
5281 | /// Determine if we're in a case where we need to (incorrectly) eagerly |
5282 | /// parse an exception specification to work around a libstdc++ bug. |
5283 | bool isLibstdcxxEagerExceptionSpecHack(const Declarator &D); |
5284 | |
5285 | /// Add an exception-specification to the given member function |
5286 | /// (or member function template). The exception-specification was parsed |
5287 | /// after the method itself was declared. |
5288 | void actOnDelayedExceptionSpecification(Decl *Method, |
5289 | ExceptionSpecificationType EST, |
5290 | SourceRange SpecificationRange, |
5291 | ArrayRef<ParsedType> DynamicExceptions, |
5292 | ArrayRef<SourceRange> DynamicExceptionRanges, |
5293 | Expr *NoexceptExpr); |
5294 | |
5295 | class InheritedConstructorInfo; |
5296 | |
5297 | /// Determine if a special member function should have a deleted |
5298 | /// definition when it is defaulted. |
5299 | bool ShouldDeleteSpecialMember(CXXMethodDecl *MD, CXXSpecialMember CSM, |
5300 | InheritedConstructorInfo *ICI = nullptr, |
5301 | bool Diagnose = false); |
5302 | |
5303 | /// Declare the implicit default constructor for the given class. |
5304 | /// |
5305 | /// \param ClassDecl The class declaration into which the implicit |
5306 | /// default constructor will be added. |
5307 | /// |
5308 | /// \returns The implicitly-declared default constructor. |
5309 | CXXConstructorDecl *DeclareImplicitDefaultConstructor( |
5310 | CXXRecordDecl *ClassDecl); |
5311 | |
5312 | /// DefineImplicitDefaultConstructor - Checks for feasibility of |
5313 | /// defining this constructor as the default constructor. |
5314 | void DefineImplicitDefaultConstructor(SourceLocation CurrentLocation, |
5315 | CXXConstructorDecl *Constructor); |
5316 | |
5317 | /// Declare the implicit destructor for the given class. |
5318 | /// |
5319 | /// \param ClassDecl The class declaration into which the implicit |
5320 | /// destructor will be added. |
5321 | /// |
5322 | /// \returns The implicitly-declared destructor. |
5323 | CXXDestructorDecl *DeclareImplicitDestructor(CXXRecordDecl *ClassDecl); |
5324 | |
5325 | /// DefineImplicitDestructor - Checks for feasibility of |
5326 | /// defining this destructor as the default destructor. |
5327 | void DefineImplicitDestructor(SourceLocation CurrentLocation, |
5328 | CXXDestructorDecl *Destructor); |
5329 | |
5330 | /// Build an exception spec for destructors that don't have one. |
5331 | /// |
5332 | /// C++11 says that user-defined destructors with no exception spec get one |
5333 | /// that looks as if the destructor was implicitly declared. |
5334 | void AdjustDestructorExceptionSpec(CXXDestructorDecl *Destructor); |
5335 | |
5336 | /// Define the specified inheriting constructor. |
5337 | void DefineInheritingConstructor(SourceLocation UseLoc, |
5338 | CXXConstructorDecl *Constructor); |
5339 | |
5340 | /// Declare the implicit copy constructor for the given class. |
5341 | /// |
5342 | /// \param ClassDecl The class declaration into which the implicit |
5343 | /// copy constructor will be added. |
5344 | /// |
5345 | /// \returns The implicitly-declared copy constructor. |
5346 | CXXConstructorDecl *DeclareImplicitCopyConstructor(CXXRecordDecl *ClassDecl); |
5347 | |
5348 | /// DefineImplicitCopyConstructor - Checks for feasibility of |
5349 | /// defining this constructor as the copy constructor. |
5350 | void DefineImplicitCopyConstructor(SourceLocation CurrentLocation, |
5351 | CXXConstructorDecl *Constructor); |
5352 | |
5353 | /// Declare the implicit move constructor for the given class. |
5354 | /// |
5355 | /// \param ClassDecl The Class declaration into which the implicit |
5356 | /// move constructor will be added. |
5357 | /// |
5358 | /// \returns The implicitly-declared move constructor, or NULL if it wasn't |
5359 | /// declared. |
5360 | CXXConstructorDecl *DeclareImplicitMoveConstructor(CXXRecordDecl *ClassDecl); |
5361 | |
5362 | /// DefineImplicitMoveConstructor - Checks for feasibility of |
5363 | /// defining this constructor as the move constructor. |
5364 | void DefineImplicitMoveConstructor(SourceLocation CurrentLocation, |
5365 | CXXConstructorDecl *Constructor); |
5366 | |
5367 | /// Declare the implicit copy assignment operator for the given class. |
5368 | /// |
5369 | /// \param ClassDecl The class declaration into which the implicit |
5370 | /// copy assignment operator will be added. |
5371 | /// |
5372 | /// \returns The implicitly-declared copy assignment operator. |
5373 | CXXMethodDecl *DeclareImplicitCopyAssignment(CXXRecordDecl *ClassDecl); |
5374 | |
5375 | /// Defines an implicitly-declared copy assignment operator. |
5376 | void DefineImplicitCopyAssignment(SourceLocation CurrentLocation, |
5377 | CXXMethodDecl *MethodDecl); |
5378 | |
5379 | /// Declare the implicit move assignment operator for the given class. |
5380 | /// |
5381 | /// \param ClassDecl The Class declaration into which the implicit |
5382 | /// move assignment operator will be added. |
5383 | /// |
5384 | /// \returns The implicitly-declared move assignment operator, or NULL if it |
5385 | /// wasn't declared. |
5386 | CXXMethodDecl *DeclareImplicitMoveAssignment(CXXRecordDecl *ClassDecl); |
5387 | |
5388 | /// Defines an implicitly-declared move assignment operator. |
5389 | void DefineImplicitMoveAssignment(SourceLocation CurrentLocation, |
5390 | CXXMethodDecl *MethodDecl); |
5391 | |
5392 | /// Force the declaration of any implicitly-declared members of this |
5393 | /// class. |
5394 | void ForceDeclarationOfImplicitMembers(CXXRecordDecl *Class); |
5395 | |
5396 | /// Check a completed declaration of an implicit special member. |
5397 | void CheckImplicitSpecialMemberDeclaration(Scope *S, FunctionDecl *FD); |
5398 | |
5399 | /// Determine whether the given function is an implicitly-deleted |
5400 | /// special member function. |
5401 | bool isImplicitlyDeleted(FunctionDecl *FD); |
5402 | |
5403 | /// Check whether 'this' shows up in the type of a static member |
5404 | /// function after the (naturally empty) cv-qualifier-seq would be. |
5405 | /// |
5406 | /// \returns true if an error occurred. |
5407 | bool checkThisInStaticMemberFunctionType(CXXMethodDecl *Method); |
5408 | |
5409 | /// Whether this' shows up in the exception specification of a static |
5410 | /// member function. |
5411 | bool checkThisInStaticMemberFunctionExceptionSpec(CXXMethodDecl *Method); |
5412 | |
5413 | /// Check whether 'this' shows up in the attributes of the given |
5414 | /// static member function. |
5415 | /// |
5416 | /// \returns true if an error occurred. |
5417 | bool checkThisInStaticMemberFunctionAttributes(CXXMethodDecl *Method); |
5418 | |
5419 | /// MaybeBindToTemporary - If the passed in expression has a record type with |
5420 | /// a non-trivial destructor, this will return CXXBindTemporaryExpr. Otherwise |
5421 | /// it simply returns the passed in expression. |
5422 | ExprResult MaybeBindToTemporary(Expr *E); |
5423 | |
5424 | bool CompleteConstructorCall(CXXConstructorDecl *Constructor, |
5425 | MultiExprArg ArgsPtr, |
5426 | SourceLocation Loc, |
5427 | SmallVectorImpl<Expr*> &ConvertedArgs, |
5428 | bool AllowExplicit = false, |
5429 | bool IsListInitialization = false); |
5430 | |
5431 | ParsedType getInheritingConstructorName(CXXScopeSpec &SS, |
5432 | SourceLocation NameLoc, |
5433 | IdentifierInfo &Name); |
5434 | |
5435 | ParsedType getConstructorName(IdentifierInfo &II, SourceLocation NameLoc, |
5436 | Scope *S, CXXScopeSpec &SS, |
5437 | bool EnteringContext); |
5438 | ParsedType getDestructorName(SourceLocation TildeLoc, |
5439 | IdentifierInfo &II, SourceLocation NameLoc, |
5440 | Scope *S, CXXScopeSpec &SS, |
5441 | ParsedType ObjectType, |
5442 | bool EnteringContext); |
5443 | |
5444 | ParsedType getDestructorTypeForDecltype(const DeclSpec &DS, |
5445 | ParsedType ObjectType); |
5446 | |
5447 | // Checks that reinterpret casts don't have undefined behavior. |
5448 | void CheckCompatibleReinterpretCast(QualType SrcType, QualType DestType, |
5449 | bool IsDereference, SourceRange Range); |
5450 | |
5451 | /// ActOnCXXNamedCast - Parse {dynamic,static,reinterpret,const}_cast's. |
5452 | ExprResult ActOnCXXNamedCast(SourceLocation OpLoc, |
5453 | tok::TokenKind Kind, |
5454 | SourceLocation LAngleBracketLoc, |
5455 | Declarator &D, |
5456 | SourceLocation RAngleBracketLoc, |
5457 | SourceLocation LParenLoc, |
5458 | Expr *E, |
5459 | SourceLocation RParenLoc); |
5460 | |
5461 | ExprResult BuildCXXNamedCast(SourceLocation OpLoc, |
5462 | tok::TokenKind Kind, |
5463 | TypeSourceInfo *Ty, |
5464 | Expr *E, |
5465 | SourceRange AngleBrackets, |
5466 | SourceRange Parens); |
5467 | |
5468 | ExprResult ActOnBuiltinBitCastExpr(SourceLocation KWLoc, Declarator &Dcl, |
5469 | ExprResult Operand, |
5470 | SourceLocation RParenLoc); |
5471 | |
5472 | ExprResult BuildBuiltinBitCastExpr(SourceLocation KWLoc, TypeSourceInfo *TSI, |
5473 | Expr *Operand, SourceLocation RParenLoc); |
5474 | |
5475 | ExprResult BuildCXXTypeId(QualType TypeInfoType, |
5476 | SourceLocation TypeidLoc, |
5477 | TypeSourceInfo *Operand, |
5478 | SourceLocation RParenLoc); |
5479 | ExprResult BuildCXXTypeId(QualType TypeInfoType, |
5480 | SourceLocation TypeidLoc, |
5481 | Expr *Operand, |
5482 | SourceLocation RParenLoc); |
5483 | |
5484 | /// ActOnCXXTypeid - Parse typeid( something ). |
5485 | ExprResult ActOnCXXTypeid(SourceLocation OpLoc, |
5486 | SourceLocation LParenLoc, bool isType, |
5487 | void *TyOrExpr, |
5488 | SourceLocation RParenLoc); |
5489 | |
5490 | ExprResult BuildCXXUuidof(QualType TypeInfoType, |
5491 | SourceLocation TypeidLoc, |
5492 | TypeSourceInfo *Operand, |
5493 | SourceLocation RParenLoc); |
5494 | ExprResult BuildCXXUuidof(QualType TypeInfoType, |
5495 | SourceLocation TypeidLoc, |
5496 | Expr *Operand, |
5497 | SourceLocation RParenLoc); |
5498 | |
5499 | /// ActOnCXXUuidof - Parse __uuidof( something ). |
5500 | ExprResult ActOnCXXUuidof(SourceLocation OpLoc, |
5501 | SourceLocation LParenLoc, bool isType, |
5502 | void *TyOrExpr, |
5503 | SourceLocation RParenLoc); |
5504 | |
5505 | /// Handle a C++1z fold-expression: ( expr op ... op expr ). |
5506 | ExprResult ActOnCXXFoldExpr(SourceLocation LParenLoc, Expr *LHS, |
5507 | tok::TokenKind Operator, |
5508 | SourceLocation EllipsisLoc, Expr *RHS, |
5509 | SourceLocation RParenLoc); |
5510 | ExprResult BuildCXXFoldExpr(SourceLocation LParenLoc, Expr *LHS, |
5511 | BinaryOperatorKind Operator, |
5512 | SourceLocation EllipsisLoc, Expr *RHS, |
5513 | SourceLocation RParenLoc, |
5514 | Optional<unsigned> NumExpansions); |
5515 | ExprResult BuildEmptyCXXFoldExpr(SourceLocation EllipsisLoc, |
5516 | BinaryOperatorKind Operator); |
5517 | |
5518 | //// ActOnCXXThis - Parse 'this' pointer. |
5519 | ExprResult ActOnCXXThis(SourceLocation loc); |
5520 | |
5521 | /// Build a CXXThisExpr and mark it referenced in the current context. |
5522 | Expr *BuildCXXThisExpr(SourceLocation Loc, QualType Type, bool IsImplicit); |
5523 | void MarkThisReferenced(CXXThisExpr *This); |
5524 | |
5525 | /// Try to retrieve the type of the 'this' pointer. |
5526 | /// |
5527 | /// \returns The type of 'this', if possible. Otherwise, returns a NULL type. |
5528 | QualType getCurrentThisType(); |
5529 | |
5530 | /// When non-NULL, the C++ 'this' expression is allowed despite the |
5531 | /// current context not being a non-static member function. In such cases, |
5532 | /// this provides the type used for 'this'. |
5533 | QualType CXXThisTypeOverride; |
5534 | |
5535 | /// RAII object used to temporarily allow the C++ 'this' expression |
5536 | /// to be used, with the given qualifiers on the current class type. |
5537 | class CXXThisScopeRAII { |
5538 | Sema &S; |
5539 | QualType OldCXXThisTypeOverride; |
5540 | bool Enabled; |
5541 | |
5542 | public: |
5543 | /// Introduce a new scope where 'this' may be allowed (when enabled), |
5544 | /// using the given declaration (which is either a class template or a |
5545 | /// class) along with the given qualifiers. |
5546 | /// along with the qualifiers placed on '*this'. |
5547 | CXXThisScopeRAII(Sema &S, Decl *ContextDecl, Qualifiers CXXThisTypeQuals, |
5548 | bool Enabled = true); |
5549 | |
5550 | ~CXXThisScopeRAII(); |
5551 | }; |
5552 | |
5553 | /// Make sure the value of 'this' is actually available in the current |
5554 | /// context, if it is a potentially evaluated context. |
5555 | /// |
5556 | /// \param Loc The location at which the capture of 'this' occurs. |
5557 | /// |
5558 | /// \param Explicit Whether 'this' is explicitly captured in a lambda |
5559 | /// capture list. |
5560 | /// |
5561 | /// \param FunctionScopeIndexToStopAt If non-null, it points to the index |
5562 | /// of the FunctionScopeInfo stack beyond which we do not attempt to capture. |
5563 | /// This is useful when enclosing lambdas must speculatively capture |
5564 | /// 'this' that may or may not be used in certain specializations of |
5565 | /// a nested generic lambda (depending on whether the name resolves to |
5566 | /// a non-static member function or a static function). |
5567 | /// \return returns 'true' if failed, 'false' if success. |
5568 | bool CheckCXXThisCapture(SourceLocation Loc, bool Explicit = false, |
5569 | bool BuildAndDiagnose = true, |
5570 | const unsigned *const FunctionScopeIndexToStopAt = nullptr, |
5571 | bool ByCopy = false); |
5572 | |
5573 | /// Determine whether the given type is the type of *this that is used |
5574 | /// outside of the body of a member function for a type that is currently |
5575 | /// being defined. |
5576 | bool isThisOutsideMemberFunctionBody(QualType BaseType); |
5577 | |
5578 | /// ActOnCXXBoolLiteral - Parse {true,false} literals. |
5579 | ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); |
5580 | |
5581 | |
5582 | /// ActOnObjCBoolLiteral - Parse {__objc_yes,__objc_no} literals. |
5583 | ExprResult ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); |
5584 | |
5585 | ExprResult |
5586 | ActOnObjCAvailabilityCheckExpr(llvm::ArrayRef<AvailabilitySpec> AvailSpecs, |
5587 | SourceLocation AtLoc, SourceLocation RParen); |
5588 | |
5589 | /// ActOnCXXNullPtrLiteral - Parse 'nullptr'. |
5590 | ExprResult ActOnCXXNullPtrLiteral(SourceLocation Loc); |
5591 | |
5592 | //// ActOnCXXThrow - Parse throw expressions. |
5593 | ExprResult ActOnCXXThrow(Scope *S, SourceLocation OpLoc, Expr *expr); |
5594 | ExprResult BuildCXXThrow(SourceLocation OpLoc, Expr *Ex, |
5595 | bool IsThrownVarInScope); |
5596 | bool CheckCXXThrowOperand(SourceLocation ThrowLoc, QualType ThrowTy, Expr *E); |
5597 | |
5598 | /// ActOnCXXTypeConstructExpr - Parse construction of a specified type. |
5599 | /// Can be interpreted either as function-style casting ("int(x)") |
5600 | /// or class type construction ("ClassType(x,y,z)") |
5601 | /// or creation of a value-initialized type ("int()"). |
5602 | ExprResult ActOnCXXTypeConstructExpr(ParsedType TypeRep, |
5603 | SourceLocation LParenOrBraceLoc, |
5604 | MultiExprArg Exprs, |
5605 | SourceLocation RParenOrBraceLoc, |
5606 | bool ListInitialization); |
5607 | |
5608 | ExprResult BuildCXXTypeConstructExpr(TypeSourceInfo *Type, |
5609 | SourceLocation LParenLoc, |
5610 | MultiExprArg Exprs, |
5611 | SourceLocation RParenLoc, |
5612 | bool ListInitialization); |
5613 | |
5614 | /// ActOnCXXNew - Parsed a C++ 'new' expression. |
5615 | ExprResult ActOnCXXNew(SourceLocation StartLoc, bool UseGlobal, |
5616 | SourceLocation PlacementLParen, |
5617 | MultiExprArg PlacementArgs, |
5618 | SourceLocation PlacementRParen, |
5619 | SourceRange TypeIdParens, Declarator &D, |
5620 | Expr *Initializer); |
5621 | ExprResult BuildCXXNew(SourceRange Range, bool UseGlobal, |
5622 | SourceLocation PlacementLParen, |
5623 | MultiExprArg PlacementArgs, |
5624 | SourceLocation PlacementRParen, |
5625 | SourceRange TypeIdParens, |
5626 | QualType AllocType, |
5627 | TypeSourceInfo *AllocTypeInfo, |
5628 | Optional<Expr *> ArraySize, |
5629 | SourceRange DirectInitRange, |
5630 | Expr *Initializer); |
5631 | |
5632 | /// Determine whether \p FD is an aligned allocation or deallocation |
5633 | /// function that is unavailable. |
5634 | bool isUnavailableAlignedAllocationFunction(const FunctionDecl &FD) const; |
5635 | |
5636 | /// Produce diagnostics if \p FD is an aligned allocation or deallocation |
5637 | /// function that is unavailable. |
5638 | void diagnoseUnavailableAlignedAllocation(const FunctionDecl &FD, |
5639 | SourceLocation Loc); |
5640 | |
5641 | bool CheckAllocatedType(QualType AllocType, SourceLocation Loc, |
5642 | SourceRange R); |
5643 | |
5644 | /// The scope in which to find allocation functions. |
5645 | enum AllocationFunctionScope { |
5646 | /// Only look for allocation functions in the global scope. |
5647 | AFS_Global, |
5648 | /// Only look for allocation functions in the scope of the |
5649 | /// allocated class. |
5650 | AFS_Class, |
5651 | /// Look for allocation functions in both the global scope |
5652 | /// and in the scope of the allocated class. |
5653 | AFS_Both |
5654 | }; |
5655 | |
5656 | /// Finds the overloads of operator new and delete that are appropriate |
5657 | /// for the allocation. |
5658 | bool FindAllocationFunctions(SourceLocation StartLoc, SourceRange Range, |
5659 | AllocationFunctionScope NewScope, |
5660 | AllocationFunctionScope DeleteScope, |
5661 | QualType AllocType, bool IsArray, |
5662 | bool &PassAlignment, MultiExprArg PlaceArgs, |
5663 | FunctionDecl *&OperatorNew, |
5664 | FunctionDecl *&OperatorDelete, |
5665 | bool Diagnose = true); |
5666 | void DeclareGlobalNewDelete(); |
5667 | void DeclareGlobalAllocationFunction(DeclarationName Name, QualType Return, |
5668 | ArrayRef<QualType> Params); |
5669 | |
5670 | bool FindDeallocationFunction(SourceLocation StartLoc, CXXRecordDecl *RD, |
5671 | DeclarationName Name, FunctionDecl* &Operator, |
5672 | bool Diagnose = true); |
5673 | FunctionDecl *FindUsualDeallocationFunction(SourceLocation StartLoc, |
5674 | bool CanProvideSize, |
5675 | bool Overaligned, |
5676 | DeclarationName Name); |
5677 | FunctionDecl *FindDeallocationFunctionForDestructor(SourceLocation StartLoc, |
5678 | CXXRecordDecl *RD); |
5679 | |
5680 | /// ActOnCXXDelete - Parsed a C++ 'delete' expression |
5681 | ExprResult ActOnCXXDelete(SourceLocation StartLoc, |
5682 | bool UseGlobal, bool ArrayForm, |
5683 | Expr *Operand); |
5684 | void CheckVirtualDtorCall(CXXDestructorDecl *dtor, SourceLocation Loc, |
5685 | bool IsDelete, bool CallCanBeVirtual, |
5686 | bool WarnOnNonAbstractTypes, |
5687 | SourceLocation DtorLoc); |
5688 | |
5689 | ExprResult ActOnNoexceptExpr(SourceLocation KeyLoc, SourceLocation LParen, |
5690 | Expr *Operand, SourceLocation RParen); |
5691 | ExprResult BuildCXXNoexceptExpr(SourceLocation KeyLoc, Expr *Operand, |
5692 | SourceLocation RParen); |
5693 | |
5694 | /// Parsed one of the type trait support pseudo-functions. |
5695 | ExprResult ActOnTypeTrait(TypeTrait Kind, SourceLocation KWLoc, |
5696 | ArrayRef<ParsedType> Args, |
5697 | SourceLocation RParenLoc); |
5698 | ExprResult BuildTypeTrait(TypeTrait Kind, SourceLocation KWLoc, |
5699 | ArrayRef<TypeSourceInfo *> Args, |
5700 | SourceLocation RParenLoc); |
5701 | |
5702 | /// ActOnArrayTypeTrait - Parsed one of the binary type trait support |
5703 | /// pseudo-functions. |
5704 | ExprResult ActOnArrayTypeTrait(ArrayTypeTrait ATT, |
5705 | SourceLocation KWLoc, |
5706 | ParsedType LhsTy, |
5707 | Expr *DimExpr, |
5708 | SourceLocation RParen); |
5709 | |
5710 | ExprResult BuildArrayTypeTrait(ArrayTypeTrait ATT, |
5711 | SourceLocation KWLoc, |
5712 | TypeSourceInfo *TSInfo, |
5713 | Expr *DimExpr, |
5714 | SourceLocation RParen); |
5715 | |
5716 | /// ActOnExpressionTrait - Parsed one of the unary type trait support |
5717 | /// pseudo-functions. |
5718 | ExprResult ActOnExpressionTrait(ExpressionTrait OET, |
5719 | SourceLocation KWLoc, |
5720 | Expr *Queried, |
5721 | SourceLocation RParen); |
5722 | |
5723 | ExprResult BuildExpressionTrait(ExpressionTrait OET, |
5724 | SourceLocation KWLoc, |
5725 | Expr *Queried, |
5726 | SourceLocation RParen); |
5727 | |
5728 | ExprResult ActOnStartCXXMemberReference(Scope *S, |
5729 | Expr *Base, |
5730 | SourceLocation OpLoc, |
5731 | tok::TokenKind OpKind, |
5732 | ParsedType &ObjectType, |
5733 | bool &MayBePseudoDestructor); |
5734 | |
5735 | ExprResult BuildPseudoDestructorExpr(Expr *Base, |
5736 | SourceLocation OpLoc, |
5737 | tok::TokenKind OpKind, |
5738 | const CXXScopeSpec &SS, |
5739 | TypeSourceInfo *ScopeType, |
5740 | SourceLocation CCLoc, |
5741 | SourceLocation TildeLoc, |
5742 | PseudoDestructorTypeStorage DestroyedType); |
5743 | |
5744 | ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, |
5745 | SourceLocation OpLoc, |
5746 | tok::TokenKind OpKind, |
5747 | CXXScopeSpec &SS, |
5748 | UnqualifiedId &FirstTypeName, |
5749 | SourceLocation CCLoc, |
5750 | SourceLocation TildeLoc, |
5751 | UnqualifiedId &SecondTypeName); |
5752 | |
5753 | ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, |
5754 | SourceLocation OpLoc, |
5755 | tok::TokenKind OpKind, |
5756 | SourceLocation TildeLoc, |
5757 | const DeclSpec& DS); |
5758 | |
5759 | /// MaybeCreateExprWithCleanups - If the current full-expression |
5760 | /// requires any cleanups, surround it with a ExprWithCleanups node. |
5761 | /// Otherwise, just returns the passed-in expression. |
5762 | Expr *MaybeCreateExprWithCleanups(Expr *SubExpr); |
5763 | Stmt *MaybeCreateStmtWithCleanups(Stmt *SubStmt); |
5764 | ExprResult MaybeCreateExprWithCleanups(ExprResult SubExpr); |
5765 | |
5766 | MaterializeTemporaryExpr * |
5767 | CreateMaterializeTemporaryExpr(QualType T, Expr *Temporary, |
5768 | bool BoundToLvalueReference); |
5769 | |
5770 | ExprResult ActOnFinishFullExpr(Expr *Expr, bool DiscardedValue) { |
5771 | return ActOnFinishFullExpr( |
5772 | Expr, Expr ? Expr->getExprLoc() : SourceLocation(), DiscardedValue); |
5773 | } |
5774 | ExprResult ActOnFinishFullExpr(Expr *Expr, SourceLocation CC, |
5775 | bool DiscardedValue, bool IsConstexpr = false); |
5776 | StmtResult ActOnFinishFullStmt(Stmt *Stmt); |
5777 | |
5778 | // Marks SS invalid if it represents an incomplete type. |
5779 | bool RequireCompleteDeclContext(CXXScopeSpec &SS, DeclContext *DC); |
5780 | |
5781 | DeclContext *computeDeclContext(QualType T); |
5782 | DeclContext *computeDeclContext(const CXXScopeSpec &SS, |
5783 | bool EnteringContext = false); |
5784 | bool isDependentScopeSpecifier(const CXXScopeSpec &SS); |
5785 | CXXRecordDecl *getCurrentInstantiationOf(NestedNameSpecifier *NNS); |
5786 | |
5787 | /// The parser has parsed a global nested-name-specifier '::'. |
5788 | /// |
5789 | /// \param CCLoc The location of the '::'. |
5790 | /// |
5791 | /// \param SS The nested-name-specifier, which will be updated in-place |
5792 | /// to reflect the parsed nested-name-specifier. |
5793 | /// |
5794 | /// \returns true if an error occurred, false otherwise. |
5795 | bool ActOnCXXGlobalScopeSpecifier(SourceLocation CCLoc, CXXScopeSpec &SS); |
5796 | |
5797 | /// The parser has parsed a '__super' nested-name-specifier. |
5798 | /// |
5799 | /// \param SuperLoc The location of the '__super' keyword. |
5800 | /// |
5801 | /// \param ColonColonLoc The location of the '::'. |
5802 | /// |
5803 | /// \param SS The nested-name-specifier, which will be updated in-place |
5804 | /// to reflect the parsed nested-name-specifier. |
5805 | /// |
5806 | /// \returns true if an error occurred, false otherwise. |
5807 | bool ActOnSuperScopeSpecifier(SourceLocation SuperLoc, |
5808 | SourceLocation ColonColonLoc, CXXScopeSpec &SS); |
5809 | |
5810 | bool isAcceptableNestedNameSpecifier(const NamedDecl *SD, |
5811 | bool *CanCorrect = nullptr); |
5812 | NamedDecl *FindFirstQualifierInScope(Scope *S, NestedNameSpecifier *NNS); |
5813 | |
5814 | /// Keeps information about an identifier in a nested-name-spec. |
5815 | /// |
5816 | struct NestedNameSpecInfo { |
5817 | /// The type of the object, if we're parsing nested-name-specifier in |
5818 | /// a member access expression. |
5819 | ParsedType ObjectType; |
5820 | |
5821 | /// The identifier preceding the '::'. |
5822 | IdentifierInfo *Identifier; |
5823 | |
5824 | /// The location of the identifier. |
5825 | SourceLocation IdentifierLoc; |
5826 | |
5827 | /// The location of the '::'. |
5828 | SourceLocation CCLoc; |
5829 | |
5830 | /// Creates info object for the most typical case. |
5831 | NestedNameSpecInfo(IdentifierInfo *II, SourceLocation IdLoc, |
5832 | SourceLocation ColonColonLoc, ParsedType ObjectType = ParsedType()) |
5833 | : ObjectType(ObjectType), Identifier(II), IdentifierLoc(IdLoc), |
5834 | CCLoc(ColonColonLoc) { |
5835 | } |
5836 | |
5837 | NestedNameSpecInfo(IdentifierInfo *II, SourceLocation IdLoc, |
5838 | SourceLocation ColonColonLoc, QualType ObjectType) |
5839 | : ObjectType(ParsedType::make(ObjectType)), Identifier(II), |
5840 | IdentifierLoc(IdLoc), CCLoc(ColonColonLoc) { |
5841 | } |
5842 | }; |
5843 | |
5844 | bool isNonTypeNestedNameSpecifier(Scope *S, CXXScopeSpec &SS, |
5845 | NestedNameSpecInfo &IdInfo); |
5846 | |
5847 | bool BuildCXXNestedNameSpecifier(Scope *S, |
5848 | NestedNameSpecInfo &IdInfo, |
5849 | bool EnteringContext, |
5850 | CXXScopeSpec &SS, |
5851 | NamedDecl *ScopeLookupResult, |
5852 | bool ErrorRecoveryLookup, |
5853 | bool *IsCorrectedToColon = nullptr, |
5854 | bool OnlyNamespace = false); |
5855 | |
5856 | /// The parser has parsed a nested-name-specifier 'identifier::'. |
5857 | /// |
5858 | /// \param S The scope in which this nested-name-specifier occurs. |
5859 | /// |
5860 | /// \param IdInfo Parser information about an identifier in the |
5861 | /// nested-name-spec. |
5862 | /// |
5863 | /// \param EnteringContext Whether we're entering the context nominated by |
5864 | /// this nested-name-specifier. |
5865 | /// |
5866 | /// \param SS The nested-name-specifier, which is both an input |
5867 | /// parameter (the nested-name-specifier before this type) and an |
5868 | /// output parameter (containing the full nested-name-specifier, |
5869 | /// including this new type). |
5870 | /// |
5871 | /// \param ErrorRecoveryLookup If true, then this method is called to improve |
5872 | /// error recovery. In this case do not emit error message. |
5873 | /// |
5874 | /// \param IsCorrectedToColon If not null, suggestions to replace '::' -> ':' |
5875 | /// are allowed. The bool value pointed by this parameter is set to 'true' |
5876 | /// if the identifier is treated as if it was followed by ':', not '::'. |
5877 | /// |
5878 | /// \param OnlyNamespace If true, only considers namespaces in lookup. |
5879 | /// |
5880 | /// \returns true if an error occurred, false otherwise. |
5881 | bool ActOnCXXNestedNameSpecifier(Scope *S, |
5882 | NestedNameSpecInfo &IdInfo, |
5883 | bool EnteringContext, |
5884 | CXXScopeSpec &SS, |
5885 | bool ErrorRecoveryLookup = false, |
5886 | bool *IsCorrectedToColon = nullptr, |
5887 | bool OnlyNamespace = false); |
5888 | |
5889 | ExprResult ActOnDecltypeExpression(Expr *E); |
5890 | |
5891 | bool ActOnCXXNestedNameSpecifierDecltype(CXXScopeSpec &SS, |
5892 | const DeclSpec &DS, |
5893 | SourceLocation ColonColonLoc); |
5894 | |
5895 | bool IsInvalidUnlessNestedName(Scope *S, CXXScopeSpec &SS, |
5896 | NestedNameSpecInfo &IdInfo, |
5897 | bool EnteringContext); |
5898 | |
5899 | /// The parser has parsed a nested-name-specifier |
5900 | /// 'template[opt] template-name < template-args >::'. |
5901 | /// |
5902 | /// \param S The scope in which this nested-name-specifier occurs. |
5903 | /// |
5904 | /// \param SS The nested-name-specifier, which is both an input |
5905 | /// parameter (the nested-name-specifier before this type) and an |
5906 | /// output parameter (containing the full nested-name-specifier, |
5907 | /// including this new type). |
5908 | /// |
5909 | /// \param TemplateKWLoc the location of the 'template' keyword, if any. |
5910 | /// \param TemplateName the template name. |
5911 | /// \param TemplateNameLoc The location of the template name. |
5912 | /// \param LAngleLoc The location of the opening angle bracket ('<'). |
5913 | /// \param TemplateArgs The template arguments. |
5914 | /// \param RAngleLoc The location of the closing angle bracket ('>'). |
5915 | /// \param CCLoc The location of the '::'. |
5916 | /// |
5917 | /// \param EnteringContext Whether we're entering the context of the |
5918 | /// nested-name-specifier. |
5919 | /// |
5920 | /// |
5921 | /// \returns true if an error occurred, false otherwise. |
5922 | bool ActOnCXXNestedNameSpecifier(Scope *S, |
5923 | CXXScopeSpec &SS, |
5924 | SourceLocation TemplateKWLoc, |
5925 | TemplateTy TemplateName, |
5926 | SourceLocation TemplateNameLoc, |
5927 | SourceLocation LAngleLoc, |
5928 | ASTTemplateArgsPtr TemplateArgs, |
5929 | SourceLocation RAngleLoc, |
5930 | SourceLocation CCLoc, |
5931 | bool EnteringContext); |
5932 | |
5933 | /// Given a C++ nested-name-specifier, produce an annotation value |
5934 | /// that the parser can use later to reconstruct the given |
5935 | /// nested-name-specifier. |
5936 | /// |
5937 | /// \param SS A nested-name-specifier. |
5938 | /// |
5939 | /// \returns A pointer containing all of the information in the |
5940 | /// nested-name-specifier \p SS. |
5941 | void *SaveNestedNameSpecifierAnnotation(CXXScopeSpec &SS); |
5942 | |
5943 | /// Given an annotation pointer for a nested-name-specifier, restore |
5944 | /// the nested-name-specifier structure. |
5945 | /// |
5946 | /// \param Annotation The annotation pointer, produced by |
5947 | /// \c SaveNestedNameSpecifierAnnotation(). |
5948 | /// |
5949 | /// \param AnnotationRange The source range corresponding to the annotation. |
5950 | /// |
5951 | /// \param SS The nested-name-specifier that will be updated with the contents |
5952 | /// of the annotation pointer. |
5953 | void RestoreNestedNameSpecifierAnnotation(void *Annotation, |
5954 | SourceRange AnnotationRange, |
5955 | CXXScopeSpec &SS); |
5956 | |
5957 | bool ShouldEnterDeclaratorScope(Scope *S, const CXXScopeSpec &SS); |
5958 | |
5959 | /// ActOnCXXEnterDeclaratorScope - Called when a C++ scope specifier (global |
5960 | /// scope or nested-name-specifier) is parsed, part of a declarator-id. |
5961 | /// After this method is called, according to [C++ 3.4.3p3], names should be |
5962 | /// looked up in the declarator-id's scope, until the declarator is parsed and |
5963 | /// ActOnCXXExitDeclaratorScope is called. |
5964 | /// The 'SS' should be a non-empty valid CXXScopeSpec. |
5965 | bool ActOnCXXEnterDeclaratorScope(Scope *S, CXXScopeSpec &SS); |
5966 | |
5967 | /// ActOnCXXExitDeclaratorScope - Called when a declarator that previously |
5968 | /// invoked ActOnCXXEnterDeclaratorScope(), is finished. 'SS' is the same |
5969 | /// CXXScopeSpec that was passed to ActOnCXXEnterDeclaratorScope as well. |
5970 | /// Used to indicate that names should revert to being looked up in the |
5971 | /// defining scope. |
5972 | void ActOnCXXExitDeclaratorScope(Scope *S, const CXXScopeSpec &SS); |
5973 | |
5974 | /// ActOnCXXEnterDeclInitializer - Invoked when we are about to parse an |
5975 | /// initializer for the declaration 'Dcl'. |
5976 | /// After this method is called, according to [C++ 3.4.1p13], if 'Dcl' is a |
5977 | /// static data member of class X, names should be looked up in the scope of |
5978 | /// class X. |
5979 | void ActOnCXXEnterDeclInitializer(Scope *S, Decl *Dcl); |
5980 | |
5981 | /// ActOnCXXExitDeclInitializer - Invoked after we are finished parsing an |
5982 | /// initializer for the declaration 'Dcl'. |
5983 | void ActOnCXXExitDeclInitializer(Scope *S, Decl *Dcl); |
5984 | |
5985 | /// Create a new lambda closure type. |
5986 | CXXRecordDecl *createLambdaClosureType(SourceRange IntroducerRange, |
5987 | TypeSourceInfo *Info, |
5988 | bool KnownDependent, |
5989 | LambdaCaptureDefault CaptureDefault); |
5990 | |
5991 | /// Start the definition of a lambda expression. |
5992 | CXXMethodDecl *startLambdaDefinition(CXXRecordDecl *Class, |
5993 | SourceRange IntroducerRange, |
5994 | TypeSourceInfo *MethodType, |
5995 | SourceLocation EndLoc, |
5996 | ArrayRef<ParmVarDecl *> Params, |
5997 | ConstexprSpecKind ConstexprKind); |
5998 | |
5999 | /// Number lambda for linkage purposes if necessary. |
6000 | void handleLambdaNumbering( |
6001 | CXXRecordDecl *Class, CXXMethodDecl *Method, |
6002 | Optional<std::tuple<unsigned, bool, Decl *>> Mangling = None); |
6003 | |
6004 | /// Endow the lambda scope info with the relevant properties. |
6005 | void buildLambdaScope(sema::LambdaScopeInfo *LSI, |
6006 | CXXMethodDecl *CallOperator, |
6007 | SourceRange IntroducerRange, |
6008 | LambdaCaptureDefault CaptureDefault, |
6009 | SourceLocation CaptureDefaultLoc, |
6010 | bool ExplicitParams, |
6011 | bool ExplicitResultType, |
6012 | bool Mutable); |
6013 | |
6014 | /// Perform initialization analysis of the init-capture and perform |
6015 | /// any implicit conversions such as an lvalue-to-rvalue conversion if |
6016 | /// not being used to initialize a reference. |
6017 | ParsedType actOnLambdaInitCaptureInitialization( |
6018 | SourceLocation Loc, bool ByRef, SourceLocation EllipsisLoc, |
6019 | IdentifierInfo *Id, LambdaCaptureInitKind InitKind, Expr *&Init) { |
6020 | return ParsedType::make(buildLambdaInitCaptureInitialization( |
6021 | Loc, ByRef, EllipsisLoc, None, Id, |
6022 | InitKind != LambdaCaptureInitKind::CopyInit, Init)); |
6023 | } |
6024 | QualType buildLambdaInitCaptureInitialization( |
6025 | SourceLocation Loc, bool ByRef, SourceLocation EllipsisLoc, |
6026 | Optional<unsigned> NumExpansions, IdentifierInfo *Id, bool DirectInit, |
6027 | Expr *&Init); |
6028 | |
6029 | /// Create a dummy variable within the declcontext of the lambda's |
6030 | /// call operator, for name lookup purposes for a lambda init capture. |
6031 | /// |
6032 | /// CodeGen handles emission of lambda captures, ignoring these dummy |
6033 | /// variables appropriately. |
6034 | VarDecl *createLambdaInitCaptureVarDecl(SourceLocation Loc, |
6035 | QualType InitCaptureType, |
6036 | SourceLocation EllipsisLoc, |
6037 | IdentifierInfo *Id, |
6038 | unsigned InitStyle, Expr *Init); |
6039 | |
6040 | /// Add an init-capture to a lambda scope. |
6041 | void addInitCapture(sema::LambdaScopeInfo *LSI, VarDecl *Var); |
6042 | |
6043 | /// Note that we have finished the explicit captures for the |
6044 | /// given lambda. |
6045 | void finishLambdaExplicitCaptures(sema::LambdaScopeInfo *LSI); |
6046 | |
6047 | /// \brief This is called after parsing the explicit template parameter list |
6048 | /// on a lambda (if it exists) in C++2a. |
6049 | void ActOnLambdaExplicitTemplateParameterList(SourceLocation LAngleLoc, |
6050 | ArrayRef<NamedDecl *> TParams, |
6051 | SourceLocation RAngleLoc); |
6052 | |
6053 | /// Introduce the lambda parameters into scope. |
6054 | void addLambdaParameters( |
6055 | ArrayRef<LambdaIntroducer::LambdaCapture> Captures, |
6056 | CXXMethodDecl *CallOperator, Scope *CurScope); |
6057 | |
6058 | /// Deduce a block or lambda's return type based on the return |
6059 | /// statements present in the body. |
6060 | void deduceClosureReturnType(sema::CapturingScopeInfo &CSI); |
6061 | |
6062 | /// ActOnStartOfLambdaDefinition - This is called just before we start |
6063 | /// parsing the body of a lambda; it analyzes the explicit captures and |
6064 | /// arguments, and sets up various data-structures for the body of the |
6065 | /// lambda. |
6066 | void ActOnStartOfLambdaDefinition(LambdaIntroducer &Intro, |
6067 | Declarator &ParamInfo, Scope *CurScope); |
6068 | |
6069 | /// ActOnLambdaError - If there is an error parsing a lambda, this callback |
6070 | /// is invoked to pop the information about the lambda. |
6071 | void ActOnLambdaError(SourceLocation StartLoc, Scope *CurScope, |
6072 | bool IsInstantiation = false); |
6073 | |
6074 | /// ActOnLambdaExpr - This is called when the body of a lambda expression |
6075 | /// was successfully completed. |
6076 | ExprResult ActOnLambdaExpr(SourceLocation StartLoc, Stmt *Body, |
6077 | Scope *CurScope); |
6078 | |
6079 | /// Does copying/destroying the captured variable have side effects? |
6080 | bool CaptureHasSideEffects(const sema::Capture &From); |
6081 | |
6082 | /// Diagnose if an explicit lambda capture is unused. Returns true if a |
6083 | /// diagnostic is emitted. |
6084 | bool DiagnoseUnusedLambdaCapture(SourceRange CaptureRange, |
6085 | const sema::Capture &From); |
6086 | |
6087 | /// Build a FieldDecl suitable to hold the given capture. |
6088 | FieldDecl *BuildCaptureField(RecordDecl *RD, const sema::Capture &Capture); |
6089 | |
6090 | /// Initialize the given capture with a suitable expression. |
6091 | ExprResult BuildCaptureInit(const sema::Capture &Capture, |
6092 | SourceLocation ImplicitCaptureLoc, |
6093 | bool IsOpenMPMapping = false); |
6094 | |
6095 | /// Complete a lambda-expression having processed and attached the |
6096 | /// lambda body. |
6097 | ExprResult BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc, |
6098 | sema::LambdaScopeInfo *LSI); |
6099 | |
6100 | /// Get the return type to use for a lambda's conversion function(s) to |
6101 | /// function pointer type, given the type of the call operator. |
6102 | QualType |
6103 | getLambdaConversionFunctionResultType(const FunctionProtoType *CallOpType); |
6104 | |
6105 | /// Define the "body" of the conversion from a lambda object to a |
6106 | /// function pointer. |
6107 | /// |
6108 | /// This routine doesn't actually define a sensible body; rather, it fills |
6109 | /// in the initialization expression needed to copy the lambda object into |
6110 | /// the block, and IR generation actually generates the real body of the |
6111 | /// block pointer conversion. |
6112 | void DefineImplicitLambdaToFunctionPointerConversion( |
6113 | SourceLocation CurrentLoc, CXXConversionDecl *Conv); |
6114 | |
6115 | /// Define the "body" of the conversion from a lambda object to a |
6116 | /// block pointer. |
6117 | /// |
6118 | /// This routine doesn't actually define a sensible body; rather, it fills |
6119 | /// in the initialization expression needed to copy the lambda object into |
6120 | /// the block, and IR generation actually generates the real body of the |
6121 | /// block pointer conversion. |
6122 | void DefineImplicitLambdaToBlockPointerConversion(SourceLocation CurrentLoc, |
6123 | CXXConversionDecl *Conv); |
6124 | |
6125 | ExprResult BuildBlockForLambdaConversion(SourceLocation CurrentLocation, |
6126 | SourceLocation ConvLocation, |
6127 | CXXConversionDecl *Conv, |
6128 | Expr *Src); |
6129 | |
6130 | /// Check whether the given expression is a valid constraint expression. |
6131 | /// A diagnostic is emitted if it is not, and false is returned. |
6132 | bool CheckConstraintExpression(Expr *CE); |
6133 | |
6134 | bool CalculateConstraintSatisfaction(ConceptDecl *NamedConcept, |
6135 | MultiLevelTemplateArgumentList &MLTAL, |
6136 | Expr *ConstraintExpr, |
6137 | bool &IsSatisfied); |
6138 | |
6139 | /// Check that the associated constraints of a template declaration match the |
6140 | /// associated constraints of an older declaration of which it is a |
6141 | /// redeclaration. |
6142 | bool CheckRedeclarationConstraintMatch(TemplateParameterList *Old, |
6143 | TemplateParameterList *New); |
6144 | |
6145 | // ParseObjCStringLiteral - Parse Objective-C string literals. |
6146 | ExprResult ParseObjCStringLiteral(SourceLocation *AtLocs, |
6147 | ArrayRef<Expr *> Strings); |
6148 | |
6149 | ExprResult BuildObjCStringLiteral(SourceLocation AtLoc, StringLiteral *S); |
6150 | |
6151 | /// BuildObjCNumericLiteral - builds an ObjCBoxedExpr AST node for the |
6152 | /// numeric literal expression. Type of the expression will be "NSNumber *" |
6153 | /// or "id" if NSNumber is unavailable. |
6154 | ExprResult BuildObjCNumericLiteral(SourceLocation AtLoc, Expr *Number); |
6155 | ExprResult ActOnObjCBoolLiteral(SourceLocation AtLoc, SourceLocation ValueLoc, |
6156 | bool Value); |
6157 | ExprResult BuildObjCArrayLiteral(SourceRange SR, MultiExprArg Elements); |
6158 | |
6159 | /// BuildObjCBoxedExpr - builds an ObjCBoxedExpr AST node for the |
6160 | /// '@' prefixed parenthesized expression. The type of the expression will |
6161 | /// either be "NSNumber *", "NSString *" or "NSValue *" depending on the type |
6162 | /// of ValueType, which is allowed to be a built-in numeric type, "char *", |
6163 | /// "const char *" or C structure with attribute 'objc_boxable'. |
6164 | ExprResult BuildObjCBoxedExpr(SourceRange SR, Expr *ValueExpr); |
6165 | |
6166 | ExprResult BuildObjCSubscriptExpression(SourceLocation RB, Expr *BaseExpr, |
6167 | Expr *IndexExpr, |
6168 | ObjCMethodDecl *getterMethod, |
6169 | ObjCMethodDecl *setterMethod); |
6170 | |
6171 | ExprResult BuildObjCDictionaryLiteral(SourceRange SR, |
6172 | MutableArrayRef<ObjCDictionaryElement> Elements); |
6173 | |
6174 | ExprResult BuildObjCEncodeExpression(SourceLocation AtLoc, |
6175 | TypeSourceInfo *EncodedTypeInfo, |
6176 | SourceLocation RParenLoc); |
6177 | ExprResult BuildCXXMemberCallExpr(Expr *Exp, NamedDecl *FoundDecl, |
6178 | CXXConversionDecl *Method, |
6179 | bool HadMultipleCandidates); |
6180 | |
6181 | ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc, |
6182 | SourceLocation EncodeLoc, |
6183 | SourceLocation LParenLoc, |
6184 | ParsedType Ty, |
6185 | SourceLocation RParenLoc); |
6186 | |
6187 | /// ParseObjCSelectorExpression - Build selector expression for \@selector |
6188 | ExprResult ParseObjCSelectorExpression(Selector Sel, |
6189 | SourceLocation AtLoc, |
6190 | SourceLocation SelLoc, |
6191 | SourceLocation LParenLoc, |
6192 | SourceLocation RParenLoc, |
6193 | bool WarnMultipleSelectors); |
6194 | |
6195 | /// ParseObjCProtocolExpression - Build protocol expression for \@protocol |
6196 | ExprResult ParseObjCProtocolExpression(IdentifierInfo * ProtocolName, |
6197 | SourceLocation AtLoc, |
6198 | SourceLocation ProtoLoc, |
6199 | SourceLocation LParenLoc, |
6200 | SourceLocation ProtoIdLoc, |
6201 | SourceLocation RParenLoc); |
6202 | |
6203 | //===--------------------------------------------------------------------===// |
6204 | // C++ Declarations |
6205 | // |
6206 | Decl *ActOnStartLinkageSpecification(Scope *S, |
6207 | SourceLocation ExternLoc, |
6208 | Expr *LangStr, |
6209 | SourceLocation LBraceLoc); |
6210 | Decl *ActOnFinishLinkageSpecification(Scope *S, |
6211 | Decl *LinkageSpec, |
6212 | SourceLocation RBraceLoc); |
6213 | |
6214 | |
6215 | //===--------------------------------------------------------------------===// |
6216 | // C++ Classes |
6217 | // |
6218 | CXXRecordDecl *getCurrentClass(Scope *S, const CXXScopeSpec *SS); |
6219 | bool isCurrentClassName(const IdentifierInfo &II, Scope *S, |
6220 | const CXXScopeSpec *SS = nullptr); |
6221 | bool isCurrentClassNameTypo(IdentifierInfo *&II, const CXXScopeSpec *SS); |
6222 | |
6223 | bool ActOnAccessSpecifier(AccessSpecifier Access, SourceLocation ASLoc, |
6224 | SourceLocation ColonLoc, |
6225 | const ParsedAttributesView &Attrs); |
6226 | |
6227 | NamedDecl *ActOnCXXMemberDeclarator(Scope *S, AccessSpecifier AS, |
6228 | Declarator &D, |
6229 | MultiTemplateParamsArg TemplateParameterLists, |
6230 | Expr *BitfieldWidth, const VirtSpecifiers &VS, |
6231 | InClassInitStyle InitStyle); |
6232 | |
6233 | void ActOnStartCXXInClassMemberInitializer(); |
6234 | void ActOnFinishCXXInClassMemberInitializer(Decl *VarDecl, |
6235 | SourceLocation EqualLoc, |
6236 | Expr *Init); |
6237 | |
6238 | MemInitResult ActOnMemInitializer(Decl *ConstructorD, |
6239 | Scope *S, |
6240 | CXXScopeSpec &SS, |
6241 | IdentifierInfo *MemberOrBase, |
6242 | ParsedType TemplateTypeTy, |
6243 | const DeclSpec &DS, |
6244 | SourceLocation IdLoc, |
6245 | SourceLocation LParenLoc, |
6246 | ArrayRef<Expr *> Args, |
6247 | SourceLocation RParenLoc, |
6248 | SourceLocation EllipsisLoc); |
6249 | |
6250 | MemInitResult ActOnMemInitializer(Decl *ConstructorD, |
6251 | Scope *S, |
6252 | CXXScopeSpec &SS, |
6253 | IdentifierInfo *MemberOrBase, |
6254 | ParsedType TemplateTypeTy, |
6255 | const DeclSpec &DS, |
6256 | SourceLocation IdLoc, |
6257 | Expr *InitList, |
6258 | SourceLocation EllipsisLoc); |
6259 | |
6260 | MemInitResult BuildMemInitializer(Decl *ConstructorD, |
6261 | Scope *S, |
6262 | CXXScopeSpec &SS, |
6263 | IdentifierInfo *MemberOrBase, |
6264 | ParsedType TemplateTypeTy, |
6265 | const DeclSpec &DS, |
6266 | SourceLocation IdLoc, |
6267 | Expr *Init, |
6268 | SourceLocation EllipsisLoc); |
6269 | |
6270 | MemInitResult BuildMemberInitializer(ValueDecl *Member, |
6271 | Expr *Init, |
6272 | SourceLocation IdLoc); |
6273 | |
6274 | MemInitResult BuildBaseInitializer(QualType BaseType, |
6275 | TypeSourceInfo *BaseTInfo, |
6276 | Expr *Init, |
6277 | CXXRecordDecl *ClassDecl, |
6278 | SourceLocation EllipsisLoc); |
6279 | |
6280 | MemInitResult BuildDelegatingInitializer(TypeSourceInfo *TInfo, |
6281 | Expr *Init, |
6282 | CXXRecordDecl *ClassDecl); |
6283 | |
6284 | bool SetDelegatingInitializer(CXXConstructorDecl *Constructor, |
6285 | CXXCtorInitializer *Initializer); |
6286 | |
6287 | bool SetCtorInitializers(CXXConstructorDecl *Constructor, bool AnyErrors, |
6288 | ArrayRef<CXXCtorInitializer *> Initializers = None); |
6289 | |
6290 | void SetIvarInitializers(ObjCImplementationDecl *ObjCImplementation); |
6291 | |
6292 | |
6293 | /// MarkBaseAndMemberDestructorsReferenced - Given a record decl, |
6294 | /// mark all the non-trivial destructors of its members and bases as |
6295 | /// referenced. |
6296 | void MarkBaseAndMemberDestructorsReferenced(SourceLocation Loc, |
6297 | CXXRecordDecl *Record); |
6298 | |
6299 | /// The list of classes whose vtables have been used within |
6300 | /// this translation unit, and the source locations at which the |
6301 | /// first use occurred. |
6302 | typedef std::pair<CXXRecordDecl*, SourceLocation> VTableUse; |
6303 | |
6304 | /// The list of vtables that are required but have not yet been |
6305 | /// materialized. |
6306 | SmallVector<VTableUse, 16> VTableUses; |
6307 | |
6308 | /// The set of classes whose vtables have been used within |
6309 | /// this translation unit, and a bit that will be true if the vtable is |
6310 | /// required to be emitted (otherwise, it should be emitted only if needed |
6311 | /// by code generation). |
6312 | llvm::DenseMap<CXXRecordDecl *, bool> VTablesUsed; |
6313 | |
6314 | /// Load any externally-stored vtable uses. |
6315 | void LoadExternalVTableUses(); |
6316 | |
6317 | /// Note that the vtable for the given class was used at the |
6318 | /// given location. |
6319 | void MarkVTableUsed(SourceLocation Loc, CXXRecordDecl *Class, |
6320 | bool DefinitionRequired = false); |
6321 | |
6322 | /// Mark the exception specifications of all virtual member functions |
6323 | /// in the given class as needed. |
6324 | void MarkVirtualMemberExceptionSpecsNeeded(SourceLocation Loc, |
6325 | const CXXRecordDecl *RD); |
6326 | |
6327 | /// MarkVirtualMembersReferenced - Will mark all members of the given |
6328 | /// CXXRecordDecl referenced. |
6329 | void MarkVirtualMembersReferenced(SourceLocation Loc, const CXXRecordDecl *RD, |
6330 | bool ConstexprOnly = false); |
6331 | |
6332 | /// Define all of the vtables that have been used in this |
6333 | /// translation unit and reference any virtual members used by those |
6334 | /// vtables. |
6335 | /// |
6336 | /// \returns true if any work was done, false otherwise. |
6337 | bool DefineUsedVTables(); |
6338 | |
6339 | void AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl); |
6340 | |
6341 | void ActOnMemInitializers(Decl *ConstructorDecl, |
6342 | SourceLocation ColonLoc, |
6343 | ArrayRef<CXXCtorInitializer*> MemInits, |
6344 | bool AnyErrors); |
6345 | |
6346 | /// Check class-level dllimport/dllexport attribute. The caller must |
6347 | /// ensure that referenceDLLExportedClassMethods is called some point later |
6348 | /// when all outer classes of Class are complete. |
6349 | void checkClassLevelDLLAttribute(CXXRecordDecl *Class); |
6350 | void checkClassLevelCodeSegAttribute(CXXRecordDecl *Class); |
6351 | |
6352 | void referenceDLLExportedClassMethods(); |
6353 | |
6354 | void propagateDLLAttrToBaseClassTemplate( |
6355 | CXXRecordDecl *Class, Attr *ClassAttr, |
6356 | ClassTemplateSpecializationDecl *BaseTemplateSpec, |
6357 | SourceLocation BaseLoc); |
6358 | |
6359 | /// Add gsl::Pointer attribute to std::container::iterator |
6360 | /// \param ND The declaration that introduces the name |
6361 | /// std::container::iterator. \param UnderlyingRecord The record named by ND. |
6362 | void inferGslPointerAttribute(NamedDecl *ND, CXXRecordDecl *UnderlyingRecord); |
6363 | |
6364 | /// Add [[gsl::Owner]] and [[gsl::Pointer]] attributes for std:: types. |
6365 | void inferGslOwnerPointerAttribute(CXXRecordDecl *Record); |
6366 | |
6367 | /// Add [[gsl::Pointer]] attributes for std:: types. |
6368 | void inferGslPointerAttribute(TypedefNameDecl *TD); |
6369 | |
6370 | void CheckCompletedCXXClass(CXXRecordDecl *Record); |
6371 | |
6372 | /// Check that the C++ class annoated with "trivial_abi" satisfies all the |
6373 | /// conditions that are needed for the attribute to have an effect. |
6374 | void checkIllFormedTrivialABIStruct(CXXRecordDecl &RD); |
6375 | |
6376 | void ActOnFinishCXXMemberSpecification(Scope *S, SourceLocation RLoc, |
6377 | Decl *TagDecl, SourceLocation LBrac, |
6378 | SourceLocation RBrac, |
6379 | const ParsedAttributesView &AttrList); |
6380 | void ActOnFinishCXXMemberDecls(); |
6381 | void ActOnFinishCXXNonNestedClass(Decl *D); |
6382 | |
6383 | void ActOnReenterCXXMethodParameter(Scope *S, ParmVarDecl *Param); |
6384 | unsigned ActOnReenterTemplateScope(Scope *S, Decl *Template); |
6385 | void ActOnStartDelayedMemberDeclarations(Scope *S, Decl *Record); |
6386 | void ActOnStartDelayedCXXMethodDeclaration(Scope *S, Decl *Method); |
6387 | void ActOnDelayedCXXMethodParameter(Scope *S, Decl *Param); |
6388 | void ActOnFinishDelayedMemberDeclarations(Scope *S, Decl *Record); |
6389 | void ActOnFinishDelayedCXXMethodDeclaration(Scope *S, Decl *Method); |
6390 | void ActOnFinishDelayedMemberInitializers(Decl *Record); |
6391 | void MarkAsLateParsedTemplate(FunctionDecl *FD, Decl *FnD, |
6392 | CachedTokens &Toks); |
6393 | void UnmarkAsLateParsedTemplate(FunctionDecl *FD); |
6394 | bool IsInsideALocalClassWithinATemplateFunction(); |
6395 | |
6396 | Decl *ActOnStaticAssertDeclaration(SourceLocation StaticAssertLoc, |
6397 | Expr *AssertExpr, |
6398 | Expr *AssertMessageExpr, |
6399 | SourceLocation RParenLoc); |
6400 | Decl *BuildStaticAssertDeclaration(SourceLocation StaticAssertLoc, |
6401 | Expr *AssertExpr, |
6402 | StringLiteral *AssertMessageExpr, |
6403 | SourceLocation RParenLoc, |
6404 | bool Failed); |
6405 | |
6406 | FriendDecl *CheckFriendTypeDecl(SourceLocation LocStart, |
6407 | SourceLocation FriendLoc, |
6408 | TypeSourceInfo *TSInfo); |
6409 | Decl *ActOnFriendTypeDecl(Scope *S, const DeclSpec &DS, |
6410 | MultiTemplateParamsArg TemplateParams); |
6411 | NamedDecl *ActOnFriendFunctionDecl(Scope *S, Declarator &D, |
6412 | MultiTemplateParamsArg TemplateParams); |
6413 | |
6414 | QualType CheckConstructorDeclarator(Declarator &D, QualType R, |
6415 | StorageClass& SC); |
6416 | void CheckConstructor(CXXConstructorDecl *Constructor); |
6417 | QualType CheckDestructorDeclarator(Declarator &D, QualType R, |
6418 | StorageClass& SC); |
6419 | bool CheckDestructor(CXXDestructorDecl *Destructor); |
6420 | void CheckConversionDeclarator(Declarator &D, QualType &R, |
6421 | StorageClass& SC); |
6422 | Decl *ActOnConversionDeclarator(CXXConversionDecl *Conversion); |
6423 | void CheckDeductionGuideDeclarator(Declarator &D, QualType &R, |
6424 | StorageClass &SC); |
6425 | void CheckDeductionGuideTemplate(FunctionTemplateDecl *TD); |
6426 | |
6427 | void CheckExplicitlyDefaultedFunction(FunctionDecl *MD); |
6428 | |
6429 | bool CheckExplicitlyDefaultedSpecialMember(CXXMethodDecl *MD, |
6430 | CXXSpecialMember CSM); |
6431 | void CheckDelayedMemberExceptionSpecs(); |
6432 | |
6433 | bool CheckExplicitlyDefaultedComparison(FunctionDecl *MD, |
6434 | DefaultedComparisonKind DCK); |
6435 | |
6436 | //===--------------------------------------------------------------------===// |
6437 | // C++ Derived Classes |
6438 | // |
6439 | |
6440 | /// ActOnBaseSpecifier - Parsed a base specifier |
6441 | CXXBaseSpecifier *CheckBaseSpecifier(CXXRecordDecl *Class, |
6442 | SourceRange SpecifierRange, |
6443 | bool Virtual, AccessSpecifier Access, |
6444 | TypeSourceInfo *TInfo, |
6445 | SourceLocation EllipsisLoc); |
6446 | |
6447 | BaseResult ActOnBaseSpecifier(Decl *classdecl, |
6448 | SourceRange SpecifierRange, |
6449 | ParsedAttributes &Attrs, |
6450 | bool Virtual, AccessSpecifier Access, |
6451 | ParsedType basetype, |
6452 | SourceLocation BaseLoc, |
6453 | SourceLocation EllipsisLoc); |
6454 | |
6455 | bool AttachBaseSpecifiers(CXXRecordDecl *Class, |
6456 | MutableArrayRef<CXXBaseSpecifier *> Bases); |
6457 | void ActOnBaseSpecifiers(Decl *ClassDecl, |
6458 | MutableArrayRef<CXXBaseSpecifier *> Bases); |
6459 | |
6460 | bool IsDerivedFrom(SourceLocation Loc, QualType Derived, QualType Base); |
6461 | bool IsDerivedFrom(SourceLocation Loc, QualType Derived, QualType Base, |
6462 | CXXBasePaths &Paths); |
6463 | |
6464 | // FIXME: I don't like this name. |
6465 | void BuildBasePathArray(const CXXBasePaths &Paths, CXXCastPath &BasePath); |
6466 | |
6467 | bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, |
6468 | SourceLocation Loc, SourceRange Range, |
6469 | CXXCastPath *BasePath = nullptr, |
6470 | bool IgnoreAccess = false); |
6471 | bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, |
6472 | unsigned InaccessibleBaseID, |
6473 | unsigned AmbigiousBaseConvID, |
6474 | SourceLocation Loc, SourceRange Range, |
6475 | DeclarationName Name, |
6476 | CXXCastPath *BasePath, |
6477 | bool IgnoreAccess = false); |
6478 | |
6479 | std::string getAmbiguousPathsDisplayString(CXXBasePaths &Paths); |
6480 | |
6481 | bool CheckOverridingFunctionAttributes(const CXXMethodDecl *New, |
6482 | const CXXMethodDecl *Old); |
6483 | |
6484 | /// CheckOverridingFunctionReturnType - Checks whether the return types are |
6485 | /// covariant, according to C++ [class.virtual]p5. |
6486 | bool CheckOverridingFunctionReturnType(const CXXMethodDecl *New, |
6487 | const CXXMethodDecl *Old); |
6488 | |
6489 | /// CheckOverridingFunctionExceptionSpec - Checks whether the exception |
6490 | /// spec is a subset of base spec. |
6491 | bool CheckOverridingFunctionExceptionSpec(const CXXMethodDecl *New, |
6492 | const CXXMethodDecl *Old); |
6493 | |
6494 | bool CheckPureMethod(CXXMethodDecl *Method, SourceRange InitRange); |
6495 | |
6496 | /// CheckOverrideControl - Check C++11 override control semantics. |
6497 | void CheckOverrideControl(NamedDecl *D); |
6498 | |
6499 | /// DiagnoseAbsenceOfOverrideControl - Diagnose if 'override' keyword was |
6500 | /// not used in the declaration of an overriding method. |
6501 | void DiagnoseAbsenceOfOverrideControl(NamedDecl *D); |
6502 | |
6503 | /// CheckForFunctionMarkedFinal - Checks whether a virtual member function |
6504 | /// overrides a virtual member function marked 'final', according to |
6505 | /// C++11 [class.virtual]p4. |
6506 | bool CheckIfOverriddenFunctionIsMarkedFinal(const CXXMethodDecl *New, |
6507 | const CXXMethodDecl *Old); |
6508 | |
6509 | |
6510 | //===--------------------------------------------------------------------===// |
6511 | // C++ Access Control |
6512 | // |
6513 | |
6514 | enum AccessResult { |
6515 | AR_accessible, |
6516 | AR_inaccessible, |
6517 | AR_dependent, |
6518 | AR_delayed |
6519 | }; |
6520 | |
6521 | bool SetMemberAccessSpecifier(NamedDecl *MemberDecl, |
6522 | NamedDecl *PrevMemberDecl, |
6523 | AccessSpecifier LexicalAS); |
6524 | |
6525 | AccessResult CheckUnresolvedMemberAccess(UnresolvedMemberExpr *E, |
6526 | DeclAccessPair FoundDecl); |
6527 | AccessResult CheckUnresolvedLookupAccess(UnresolvedLookupExpr *E, |
6528 | DeclAccessPair FoundDecl); |
6529 | AccessResult CheckAllocationAccess(SourceLocation OperatorLoc, |
6530 | SourceRange PlacementRange, |
6531 | CXXRecordDecl *NamingClass, |
6532 | DeclAccessPair FoundDecl, |
6533 | bool Diagnose = true); |
6534 | AccessResult CheckConstructorAccess(SourceLocation Loc, |
6535 | CXXConstructorDecl *D, |
6536 | DeclAccessPair FoundDecl, |
6537 | const InitializedEntity &Entity, |
6538 | bool IsCopyBindingRefToTemp = false); |
6539 | AccessResult CheckConstructorAccess(SourceLocation Loc, |
6540 | CXXConstructorDecl *D, |
6541 | DeclAccessPair FoundDecl, |
6542 | const InitializedEntity &Entity, |
6543 | const PartialDiagnostic &PDiag); |
6544 | AccessResult CheckDestructorAccess(SourceLocation Loc, |
6545 | CXXDestructorDecl *Dtor, |
6546 | const PartialDiagnostic &PDiag, |
6547 | QualType objectType = QualType()); |
6548 | AccessResult CheckFriendAccess(NamedDecl *D); |
6549 | AccessResult CheckMemberAccess(SourceLocation UseLoc, |
6550 | CXXRecordDecl *NamingClass, |
6551 | DeclAccessPair Found); |
6552 | AccessResult |
6553 | CheckStructuredBindingMemberAccess(SourceLocation UseLoc, |
6554 | CXXRecordDecl *DecomposedClass, |
6555 | DeclAccessPair Field); |
6556 | AccessResult CheckMemberOperatorAccess(SourceLocation Loc, |
6557 | Expr *ObjectExpr, |
6558 | Expr *ArgExpr, |
6559 | DeclAccessPair FoundDecl); |
6560 | AccessResult CheckAddressOfMemberAccess(Expr *OvlExpr, |
6561 | DeclAccessPair FoundDecl); |
6562 | AccessResult CheckBaseClassAccess(SourceLocation AccessLoc, |
6563 | QualType Base, QualType Derived, |
6564 | const CXXBasePath &Path, |
6565 | unsigned DiagID, |
6566 | bool ForceCheck = false, |
6567 | bool ForceUnprivileged = false); |
6568 | void CheckLookupAccess(const LookupResult &R); |
6569 | bool IsSimplyAccessible(NamedDecl *Decl, CXXRecordDecl *NamingClass, |
6570 | QualType BaseType); |
6571 | bool isSpecialMemberAccessibleForDeletion(CXXMethodDecl *decl, |
6572 | AccessSpecifier access, |
6573 | QualType objectType); |
6574 | |
6575 | void HandleDependentAccessCheck(const DependentDiagnostic &DD, |
6576 | const MultiLevelTemplateArgumentList &TemplateArgs); |
6577 | void PerformDependentDiagnostics(const DeclContext *Pattern, |
6578 | const MultiLevelTemplateArgumentList &TemplateArgs); |
6579 | |
6580 | void HandleDelayedAccessCheck(sema::DelayedDiagnostic &DD, Decl *Ctx); |
6581 | |
6582 | /// When true, access checking violations are treated as SFINAE |
6583 | /// failures rather than hard errors. |
6584 | bool AccessCheckingSFINAE; |
6585 | |
6586 | enum AbstractDiagSelID { |
6587 | AbstractNone = -1, |
6588 | AbstractReturnType, |
6589 | AbstractParamType, |
6590 | AbstractVariableType, |
6591 | AbstractFieldType, |
6592 | AbstractIvarType, |
6593 | AbstractSynthesizedIvarType, |
6594 | AbstractArrayType |
6595 | }; |
6596 | |
6597 | bool isAbstractType(SourceLocation Loc, QualType T); |
6598 | bool RequireNonAbstractType(SourceLocation Loc, QualType T, |
6599 | TypeDiagnoser &Diagnoser); |
6600 | template <typename... Ts> |
6601 | bool RequireNonAbstractType(SourceLocation Loc, QualType T, unsigned DiagID, |
6602 | const Ts &...Args) { |
6603 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
6604 | return RequireNonAbstractType(Loc, T, Diagnoser); |
6605 | } |
6606 | |
6607 | void DiagnoseAbstractType(const CXXRecordDecl *RD); |
6608 | |
6609 | //===--------------------------------------------------------------------===// |
6610 | // C++ Overloaded Operators [C++ 13.5] |
6611 | // |
6612 | |
6613 | bool CheckOverloadedOperatorDeclaration(FunctionDecl *FnDecl); |
6614 | |
6615 | bool CheckLiteralOperatorDeclaration(FunctionDecl *FnDecl); |
6616 | |
6617 | //===--------------------------------------------------------------------===// |
6618 | // C++ Templates [C++ 14] |
6619 | // |
6620 | void FilterAcceptableTemplateNames(LookupResult &R, |
6621 | bool AllowFunctionTemplates = true, |
6622 | bool AllowDependent = true); |
6623 | bool hasAnyAcceptableTemplateNames(LookupResult &R, |
6624 | bool AllowFunctionTemplates = true, |
6625 | bool AllowDependent = true, |
6626 | bool AllowNonTemplateFunctions = false); |
6627 | /// Try to interpret the lookup result D as a template-name. |
6628 | /// |
6629 | /// \param D A declaration found by name lookup. |
6630 | /// \param AllowFunctionTemplates Whether function templates should be |
6631 | /// considered valid results. |
6632 | /// \param AllowDependent Whether unresolved using declarations (that might |
6633 | /// name templates) should be considered valid results. |
6634 | NamedDecl *getAsTemplateNameDecl(NamedDecl *D, |
6635 | bool AllowFunctionTemplates = true, |
6636 | bool AllowDependent = true); |
6637 | |
6638 | enum class AssumedTemplateKind { |
6639 | /// This is not assumed to be a template name. |
6640 | None, |
6641 | /// This is assumed to be a template name because lookup found nothing. |
6642 | FoundNothing, |
6643 | /// This is assumed to be a template name because lookup found one or more |
6644 | /// functions (but no function templates). |
6645 | FoundFunctions, |
6646 | }; |
6647 | bool LookupTemplateName(LookupResult &R, Scope *S, CXXScopeSpec &SS, |
6648 | QualType ObjectType, bool EnteringContext, |
6649 | bool &MemberOfUnknownSpecialization, |
6650 | SourceLocation TemplateKWLoc = SourceLocation(), |
6651 | AssumedTemplateKind *ATK = nullptr); |
6652 | |
6653 | TemplateNameKind isTemplateName(Scope *S, |
6654 | CXXScopeSpec &SS, |
6655 | bool hasTemplateKeyword, |
6656 | const UnqualifiedId &Name, |
6657 | ParsedType ObjectType, |
6658 | bool EnteringContext, |
6659 | TemplateTy &Template, |
6660 | bool &MemberOfUnknownSpecialization); |
6661 | |
6662 | /// Try to resolve an undeclared template name as a type template. |
6663 | /// |
6664 | /// Sets II to the identifier corresponding to the template name, and updates |
6665 | /// Name to a corresponding (typo-corrected) type template name and TNK to |
6666 | /// the corresponding kind, if possible. |
6667 | void ActOnUndeclaredTypeTemplateName(Scope *S, TemplateTy &Name, |
6668 | TemplateNameKind &TNK, |
6669 | SourceLocation NameLoc, |
6670 | IdentifierInfo *&II); |
6671 | |
6672 | bool resolveAssumedTemplateNameAsType(Scope *S, TemplateName &Name, |
6673 | SourceLocation NameLoc, |
6674 | bool Diagnose = true); |
6675 | |
6676 | /// Determine whether a particular identifier might be the name in a C++1z |
6677 | /// deduction-guide declaration. |
6678 | bool isDeductionGuideName(Scope *S, const IdentifierInfo &Name, |
6679 | SourceLocation NameLoc, |
6680 | ParsedTemplateTy *Template = nullptr); |
6681 | |
6682 | bool DiagnoseUnknownTemplateName(const IdentifierInfo &II, |
6683 | SourceLocation IILoc, |
6684 | Scope *S, |
6685 | const CXXScopeSpec *SS, |
6686 | TemplateTy &SuggestedTemplate, |
6687 | TemplateNameKind &SuggestedKind); |
6688 | |
6689 | bool DiagnoseUninstantiableTemplate(SourceLocation PointOfInstantiation, |
6690 | NamedDecl *Instantiation, |
6691 | bool InstantiatedFromMember, |
6692 | const NamedDecl *Pattern, |
6693 | const NamedDecl *PatternDef, |
6694 | TemplateSpecializationKind TSK, |
6695 | bool Complain = true); |
6696 | |
6697 | void DiagnoseTemplateParameterShadow(SourceLocation Loc, Decl *PrevDecl); |
6698 | TemplateDecl *AdjustDeclIfTemplate(Decl *&Decl); |
6699 | |
6700 | NamedDecl *ActOnTypeParameter(Scope *S, bool Typename, |
6701 | SourceLocation EllipsisLoc, |
6702 | SourceLocation KeyLoc, |
6703 | IdentifierInfo *ParamName, |
6704 | SourceLocation ParamNameLoc, |
6705 | unsigned Depth, unsigned Position, |
6706 | SourceLocation EqualLoc, |
6707 | ParsedType DefaultArg); |
6708 | |
6709 | QualType CheckNonTypeTemplateParameterType(TypeSourceInfo *&TSI, |
6710 | SourceLocation Loc); |
6711 | QualType CheckNonTypeTemplateParameterType(QualType T, SourceLocation Loc); |
6712 | |
6713 | NamedDecl *ActOnNonTypeTemplateParameter(Scope *S, Declarator &D, |
6714 | unsigned Depth, |
6715 | unsigned Position, |
6716 | SourceLocation EqualLoc, |
6717 | Expr *DefaultArg); |
6718 | NamedDecl *ActOnTemplateTemplateParameter(Scope *S, |
6719 | SourceLocation TmpLoc, |
6720 | TemplateParameterList *Params, |
6721 | SourceLocation EllipsisLoc, |
6722 | IdentifierInfo *ParamName, |
6723 | SourceLocation ParamNameLoc, |
6724 | unsigned Depth, |
6725 | unsigned Position, |
6726 | SourceLocation EqualLoc, |
6727 | ParsedTemplateArgument DefaultArg); |
6728 | |
6729 | TemplateParameterList * |
6730 | ActOnTemplateParameterList(unsigned Depth, |
6731 | SourceLocation ExportLoc, |
6732 | SourceLocation TemplateLoc, |
6733 | SourceLocation LAngleLoc, |
6734 | ArrayRef<NamedDecl *> Params, |
6735 | SourceLocation RAngleLoc, |
6736 | Expr *RequiresClause); |
6737 | |
6738 | /// The context in which we are checking a template parameter list. |
6739 | enum TemplateParamListContext { |
6740 | TPC_ClassTemplate, |
6741 | TPC_VarTemplate, |
6742 | TPC_FunctionTemplate, |
6743 | TPC_ClassTemplateMember, |
6744 | TPC_FriendClassTemplate, |
6745 | TPC_FriendFunctionTemplate, |
6746 | TPC_FriendFunctionTemplateDefinition, |
6747 | TPC_TypeAliasTemplate |
6748 | }; |
6749 | |
6750 | bool CheckTemplateParameterList(TemplateParameterList *NewParams, |
6751 | TemplateParameterList *OldParams, |
6752 | TemplateParamListContext TPC, |
6753 | SkipBodyInfo *SkipBody = nullptr); |
6754 | TemplateParameterList *MatchTemplateParametersToScopeSpecifier( |
6755 | SourceLocation DeclStartLoc, SourceLocation DeclLoc, |
6756 | const CXXScopeSpec &SS, TemplateIdAnnotation *TemplateId, |
6757 | ArrayRef<TemplateParameterList *> ParamLists, |
6758 | bool IsFriend, bool &IsMemberSpecialization, bool &Invalid); |
6759 | |
6760 | DeclResult CheckClassTemplate( |
6761 | Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, |
6762 | CXXScopeSpec &SS, IdentifierInfo *Name, SourceLocation NameLoc, |
6763 | const ParsedAttributesView &Attr, TemplateParameterList *TemplateParams, |
6764 | AccessSpecifier AS, SourceLocation ModulePrivateLoc, |
6765 | SourceLocation FriendLoc, unsigned NumOuterTemplateParamLists, |
6766 | TemplateParameterList **OuterTemplateParamLists, |
6767 | SkipBodyInfo *SkipBody = nullptr); |
6768 | |
6769 | TemplateArgumentLoc getTrivialTemplateArgumentLoc(const TemplateArgument &Arg, |
6770 | QualType NTTPType, |
6771 | SourceLocation Loc); |
6772 | |
6773 | void translateTemplateArguments(const ASTTemplateArgsPtr &In, |
6774 | TemplateArgumentListInfo &Out); |
6775 | |
6776 | ParsedTemplateArgument ActOnTemplateTypeArgument(TypeResult ParsedType); |
6777 | |
6778 | void NoteAllFoundTemplates(TemplateName Name); |
6779 | |
6780 | QualType CheckTemplateIdType(TemplateName Template, |
6781 | SourceLocation TemplateLoc, |
6782 | TemplateArgumentListInfo &TemplateArgs); |
6783 | |
6784 | TypeResult |
6785 | ActOnTemplateIdType(Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
6786 | TemplateTy Template, IdentifierInfo *TemplateII, |
6787 | SourceLocation TemplateIILoc, SourceLocation LAngleLoc, |
6788 | ASTTemplateArgsPtr TemplateArgs, SourceLocation RAngleLoc, |
6789 | bool IsCtorOrDtorName = false, bool IsClassName = false); |
6790 | |
6791 | /// Parsed an elaborated-type-specifier that refers to a template-id, |
6792 | /// such as \c class T::template apply<U>. |
6793 | TypeResult ActOnTagTemplateIdType(TagUseKind TUK, |
6794 | TypeSpecifierType TagSpec, |
6795 | SourceLocation TagLoc, |
6796 | CXXScopeSpec &SS, |
6797 | SourceLocation TemplateKWLoc, |
6798 | TemplateTy TemplateD, |
6799 | SourceLocation TemplateLoc, |
6800 | SourceLocation LAngleLoc, |
6801 | ASTTemplateArgsPtr TemplateArgsIn, |
6802 | SourceLocation RAngleLoc); |
6803 | |
6804 | DeclResult ActOnVarTemplateSpecialization( |
6805 | Scope *S, Declarator &D, TypeSourceInfo *DI, |
6806 | SourceLocation TemplateKWLoc, TemplateParameterList *TemplateParams, |
6807 | StorageClass SC, bool IsPartialSpecialization); |
6808 | |
6809 | DeclResult CheckVarTemplateId(VarTemplateDecl *Template, |
6810 | SourceLocation TemplateLoc, |
6811 | SourceLocation TemplateNameLoc, |
6812 | const TemplateArgumentListInfo &TemplateArgs); |
6813 | |
6814 | ExprResult CheckVarTemplateId(const CXXScopeSpec &SS, |
6815 | const DeclarationNameInfo &NameInfo, |
6816 | VarTemplateDecl *Template, |
6817 | SourceLocation TemplateLoc, |
6818 | const TemplateArgumentListInfo *TemplateArgs); |
6819 | |
6820 | ExprResult |
6821 | CheckConceptTemplateId(const CXXScopeSpec &SS, |
6822 | SourceLocation TemplateKWLoc, |
6823 | SourceLocation ConceptNameLoc, NamedDecl *FoundDecl, |
6824 | ConceptDecl *NamedConcept, |
6825 | const TemplateArgumentListInfo *TemplateArgs); |
6826 | |
6827 | void diagnoseMissingTemplateArguments(TemplateName Name, SourceLocation Loc); |
6828 | |
6829 | ExprResult BuildTemplateIdExpr(const CXXScopeSpec &SS, |
6830 | SourceLocation TemplateKWLoc, |
6831 | LookupResult &R, |
6832 | bool RequiresADL, |
6833 | const TemplateArgumentListInfo *TemplateArgs); |
6834 | |
6835 | ExprResult BuildQualifiedTemplateIdExpr(CXXScopeSpec &SS, |
6836 | SourceLocation TemplateKWLoc, |
6837 | const DeclarationNameInfo &NameInfo, |
6838 | const TemplateArgumentListInfo *TemplateArgs); |
6839 | |
6840 | TemplateNameKind ActOnDependentTemplateName( |
6841 | Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
6842 | const UnqualifiedId &Name, ParsedType ObjectType, bool EnteringContext, |
6843 | TemplateTy &Template, bool AllowInjectedClassName = false); |
6844 | |
6845 | DeclResult ActOnClassTemplateSpecialization( |
6846 | Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, |
6847 | SourceLocation ModulePrivateLoc, TemplateIdAnnotation &TemplateId, |
6848 | const ParsedAttributesView &Attr, |
6849 | MultiTemplateParamsArg TemplateParameterLists, |
6850 | SkipBodyInfo *SkipBody = nullptr); |
6851 | |
6852 | bool CheckTemplatePartialSpecializationArgs(SourceLocation Loc, |
6853 | TemplateDecl *PrimaryTemplate, |
6854 | unsigned NumExplicitArgs, |
6855 | ArrayRef<TemplateArgument> Args); |
6856 | void CheckTemplatePartialSpecialization( |
6857 | ClassTemplatePartialSpecializationDecl *Partial); |
6858 | void CheckTemplatePartialSpecialization( |
6859 | VarTemplatePartialSpecializationDecl *Partial); |
6860 | |
6861 | Decl *ActOnTemplateDeclarator(Scope *S, |
6862 | MultiTemplateParamsArg TemplateParameterLists, |
6863 | Declarator &D); |
6864 | |
6865 | bool |
6866 | CheckSpecializationInstantiationRedecl(SourceLocation NewLoc, |
6867 | TemplateSpecializationKind NewTSK, |
6868 | NamedDecl *PrevDecl, |
6869 | TemplateSpecializationKind PrevTSK, |
6870 | SourceLocation PrevPtOfInstantiation, |
6871 | bool &SuppressNew); |
6872 | |
6873 | bool CheckDependentFunctionTemplateSpecialization(FunctionDecl *FD, |
6874 | const TemplateArgumentListInfo &ExplicitTemplateArgs, |
6875 | LookupResult &Previous); |
6876 | |
6877 | bool CheckFunctionTemplateSpecialization( |
6878 | FunctionDecl *FD, TemplateArgumentListInfo *ExplicitTemplateArgs, |
6879 | LookupResult &Previous, bool QualifiedFriend = false); |
6880 | bool CheckMemberSpecialization(NamedDecl *Member, LookupResult &Previous); |
6881 | void CompleteMemberSpecialization(NamedDecl *Member, LookupResult &Previous); |
6882 | |
6883 | DeclResult ActOnExplicitInstantiation( |
6884 | Scope *S, SourceLocation ExternLoc, SourceLocation TemplateLoc, |
6885 | unsigned TagSpec, SourceLocation KWLoc, const CXXScopeSpec &SS, |
6886 | TemplateTy Template, SourceLocation TemplateNameLoc, |
6887 | SourceLocation LAngleLoc, ASTTemplateArgsPtr TemplateArgs, |
6888 | SourceLocation RAngleLoc, const ParsedAttributesView &Attr); |
6889 | |
6890 | DeclResult ActOnExplicitInstantiation(Scope *S, SourceLocation ExternLoc, |
6891 | SourceLocation TemplateLoc, |
6892 | unsigned TagSpec, SourceLocation KWLoc, |
6893 | CXXScopeSpec &SS, IdentifierInfo *Name, |
6894 | SourceLocation NameLoc, |
6895 | const ParsedAttributesView &Attr); |
6896 | |
6897 | DeclResult ActOnExplicitInstantiation(Scope *S, |
6898 | SourceLocation ExternLoc, |
6899 | SourceLocation TemplateLoc, |
6900 | Declarator &D); |
6901 | |
6902 | TemplateArgumentLoc |
6903 | SubstDefaultTemplateArgumentIfAvailable(TemplateDecl *Template, |
6904 | SourceLocation TemplateLoc, |
6905 | SourceLocation RAngleLoc, |
6906 | Decl *Param, |
6907 | SmallVectorImpl<TemplateArgument> |
6908 | &Converted, |
6909 | bool &HasDefaultArg); |
6910 | |
6911 | /// Specifies the context in which a particular template |
6912 | /// argument is being checked. |
6913 | enum CheckTemplateArgumentKind { |
6914 | /// The template argument was specified in the code or was |
6915 | /// instantiated with some deduced template arguments. |
6916 | CTAK_Specified, |
6917 | |
6918 | /// The template argument was deduced via template argument |
6919 | /// deduction. |
6920 | CTAK_Deduced, |
6921 | |
6922 | /// The template argument was deduced from an array bound |
6923 | /// via template argument deduction. |
6924 | CTAK_DeducedFromArrayBound |
6925 | }; |
6926 | |
6927 | bool CheckTemplateArgument(NamedDecl *Param, |
6928 | TemplateArgumentLoc &Arg, |
6929 | NamedDecl *Template, |
6930 | SourceLocation TemplateLoc, |
6931 | SourceLocation RAngleLoc, |
6932 | unsigned ArgumentPackIndex, |
6933 | SmallVectorImpl<TemplateArgument> &Converted, |
6934 | CheckTemplateArgumentKind CTAK = CTAK_Specified); |
6935 | |
6936 | /// Check that the given template arguments can be be provided to |
6937 | /// the given template, converting the arguments along the way. |
6938 | /// |
6939 | /// \param Template The template to which the template arguments are being |
6940 | /// provided. |
6941 | /// |
6942 | /// \param TemplateLoc The location of the template name in the source. |
6943 | /// |
6944 | /// \param TemplateArgs The list of template arguments. If the template is |
6945 | /// a template template parameter, this function may extend the set of |
6946 | /// template arguments to also include substituted, defaulted template |
6947 | /// arguments. |
6948 | /// |
6949 | /// \param PartialTemplateArgs True if the list of template arguments is |
6950 | /// intentionally partial, e.g., because we're checking just the initial |
6951 | /// set of template arguments. |
6952 | /// |
6953 | /// \param Converted Will receive the converted, canonicalized template |
6954 | /// arguments. |
6955 | /// |
6956 | /// \param UpdateArgsWithConversions If \c true, update \p TemplateArgs to |
6957 | /// contain the converted forms of the template arguments as written. |
6958 | /// Otherwise, \p TemplateArgs will not be modified. |
6959 | /// |
6960 | /// \returns true if an error occurred, false otherwise. |
6961 | bool CheckTemplateArgumentList(TemplateDecl *Template, |
6962 | SourceLocation TemplateLoc, |
6963 | TemplateArgumentListInfo &TemplateArgs, |
6964 | bool PartialTemplateArgs, |
6965 | SmallVectorImpl<TemplateArgument> &Converted, |
6966 | bool UpdateArgsWithConversions = true); |
6967 | |
6968 | bool CheckTemplateTypeArgument(TemplateTypeParmDecl *Param, |
6969 | TemplateArgumentLoc &Arg, |
6970 | SmallVectorImpl<TemplateArgument> &Converted); |
6971 | |
6972 | bool CheckTemplateArgument(TemplateTypeParmDecl *Param, |
6973 | TypeSourceInfo *Arg); |
6974 | ExprResult CheckTemplateArgument(NonTypeTemplateParmDecl *Param, |
6975 | QualType InstantiatedParamType, Expr *Arg, |
6976 | TemplateArgument &Converted, |
6977 | CheckTemplateArgumentKind CTAK = CTAK_Specified); |
6978 | bool CheckTemplateTemplateArgument(TemplateParameterList *Params, |
6979 | TemplateArgumentLoc &Arg); |
6980 | |
6981 | ExprResult |
6982 | BuildExpressionFromDeclTemplateArgument(const TemplateArgument &Arg, |
6983 | QualType ParamType, |
6984 | SourceLocation Loc); |
6985 | ExprResult |
6986 | BuildExpressionFromIntegralTemplateArgument(const TemplateArgument &Arg, |
6987 | SourceLocation Loc); |
6988 | |
6989 | /// Enumeration describing how template parameter lists are compared |
6990 | /// for equality. |
6991 | enum TemplateParameterListEqualKind { |
6992 | /// We are matching the template parameter lists of two templates |
6993 | /// that might be redeclarations. |
6994 | /// |
6995 | /// \code |
6996 | /// template<typename T> struct X; |
6997 | /// template<typename T> struct X; |
6998 | /// \endcode |
6999 | TPL_TemplateMatch, |
7000 | |
7001 | /// We are matching the template parameter lists of two template |
7002 | /// template parameters as part of matching the template parameter lists |
7003 | /// of two templates that might be redeclarations. |
7004 | /// |
7005 | /// \code |
7006 | /// template<template<int I> class TT> struct X; |
7007 | /// template<template<int Value> class Other> struct X; |
7008 | /// \endcode |
7009 | TPL_TemplateTemplateParmMatch, |
7010 | |
7011 | /// We are matching the template parameter lists of a template |
7012 | /// template argument against the template parameter lists of a template |
7013 | /// template parameter. |
7014 | /// |
7015 | /// \code |
7016 | /// template<template<int Value> class Metafun> struct X; |
7017 | /// template<int Value> struct integer_c; |
7018 | /// X<integer_c> xic; |
7019 | /// \endcode |
7020 | TPL_TemplateTemplateArgumentMatch |
7021 | }; |
7022 | |
7023 | bool TemplateParameterListsAreEqual(TemplateParameterList *New, |
7024 | TemplateParameterList *Old, |
7025 | bool Complain, |
7026 | TemplateParameterListEqualKind Kind, |
7027 | SourceLocation TemplateArgLoc |
7028 | = SourceLocation()); |
7029 | |
7030 | bool CheckTemplateDeclScope(Scope *S, TemplateParameterList *TemplateParams); |
7031 | |
7032 | /// Called when the parser has parsed a C++ typename |
7033 | /// specifier, e.g., "typename T::type". |
7034 | /// |
7035 | /// \param S The scope in which this typename type occurs. |
7036 | /// \param TypenameLoc the location of the 'typename' keyword |
7037 | /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). |
7038 | /// \param II the identifier we're retrieving (e.g., 'type' in the example). |
7039 | /// \param IdLoc the location of the identifier. |
7040 | TypeResult |
7041 | ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, |
7042 | const CXXScopeSpec &SS, const IdentifierInfo &II, |
7043 | SourceLocation IdLoc); |
7044 | |
7045 | /// Called when the parser has parsed a C++ typename |
7046 | /// specifier that ends in a template-id, e.g., |
7047 | /// "typename MetaFun::template apply<T1, T2>". |
7048 | /// |
7049 | /// \param S The scope in which this typename type occurs. |
7050 | /// \param TypenameLoc the location of the 'typename' keyword |
7051 | /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). |
7052 | /// \param TemplateLoc the location of the 'template' keyword, if any. |
7053 | /// \param TemplateName The template name. |
7054 | /// \param TemplateII The identifier used to name the template. |
7055 | /// \param TemplateIILoc The location of the template name. |
7056 | /// \param LAngleLoc The location of the opening angle bracket ('<'). |
7057 | /// \param TemplateArgs The template arguments. |
7058 | /// \param RAngleLoc The location of the closing angle bracket ('>'). |
7059 | TypeResult |
7060 | ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, |
7061 | const CXXScopeSpec &SS, |
7062 | SourceLocation TemplateLoc, |
7063 | TemplateTy TemplateName, |
7064 | IdentifierInfo *TemplateII, |
7065 | SourceLocation TemplateIILoc, |
7066 | SourceLocation LAngleLoc, |
7067 | ASTTemplateArgsPtr TemplateArgs, |
7068 | SourceLocation RAngleLoc); |
7069 | |
7070 | QualType CheckTypenameType(ElaboratedTypeKeyword Keyword, |
7071 | SourceLocation KeywordLoc, |
7072 | NestedNameSpecifierLoc QualifierLoc, |
7073 | const IdentifierInfo &II, |
7074 | SourceLocation IILoc); |
7075 | |
7076 | TypeSourceInfo *RebuildTypeInCurrentInstantiation(TypeSourceInfo *T, |
7077 | SourceLocation Loc, |
7078 | DeclarationName Name); |
7079 | bool RebuildNestedNameSpecifierInCurrentInstantiation(CXXScopeSpec &SS); |
7080 | |
7081 | ExprResult RebuildExprInCurrentInstantiation(Expr *E); |
7082 | bool RebuildTemplateParamsInCurrentInstantiation( |
7083 | TemplateParameterList *Params); |
7084 | |
7085 | std::string |
7086 | getTemplateArgumentBindingsText(const TemplateParameterList *Params, |
7087 | const TemplateArgumentList &Args); |
7088 | |
7089 | std::string |
7090 | getTemplateArgumentBindingsText(const TemplateParameterList *Params, |
7091 | const TemplateArgument *Args, |
7092 | unsigned NumArgs); |
7093 | |
7094 | // Concepts |
7095 | Decl *ActOnConceptDefinition( |
7096 | Scope *S, MultiTemplateParamsArg TemplateParameterLists, |
7097 | IdentifierInfo *Name, SourceLocation NameLoc, Expr *ConstraintExpr); |
7098 | |
7099 | //===--------------------------------------------------------------------===// |
7100 | // C++ Variadic Templates (C++0x [temp.variadic]) |
7101 | //===--------------------------------------------------------------------===// |
7102 | |
7103 | /// Determine whether an unexpanded parameter pack might be permitted in this |
7104 | /// location. Useful for error recovery. |
7105 | bool isUnexpandedParameterPackPermitted(); |
7106 | |
7107 | /// The context in which an unexpanded parameter pack is |
7108 | /// being diagnosed. |
7109 | /// |
7110 | /// Note that the values of this enumeration line up with the first |
7111 | /// argument to the \c err_unexpanded_parameter_pack diagnostic. |
7112 | enum UnexpandedParameterPackContext { |
7113 | /// An arbitrary expression. |
7114 | UPPC_Expression = 0, |
7115 | |
7116 | /// The base type of a class type. |
7117 | UPPC_BaseType, |
7118 | |
7119 | /// The type of an arbitrary declaration. |
7120 | UPPC_DeclarationType, |
7121 | |
7122 | /// The type of a data member. |
7123 | UPPC_DataMemberType, |
7124 | |
7125 | /// The size of a bit-field. |
7126 | UPPC_BitFieldWidth, |
7127 | |
7128 | /// The expression in a static assertion. |
7129 | UPPC_StaticAssertExpression, |
7130 | |
7131 | /// The fixed underlying type of an enumeration. |
7132 | UPPC_FixedUnderlyingType, |
7133 | |
7134 | /// The enumerator value. |
7135 | UPPC_EnumeratorValue, |
7136 | |
7137 | /// A using declaration. |
7138 | UPPC_UsingDeclaration, |
7139 | |
7140 | /// A friend declaration. |
7141 | UPPC_FriendDeclaration, |
7142 | |
7143 | /// A declaration qualifier. |
7144 | UPPC_DeclarationQualifier, |
7145 | |
7146 | /// An initializer. |
7147 | UPPC_Initializer, |
7148 | |
7149 | /// A default argument. |
7150 | UPPC_DefaultArgument, |
7151 | |
7152 | /// The type of a non-type template parameter. |
7153 | UPPC_NonTypeTemplateParameterType, |
7154 | |
7155 | /// The type of an exception. |
7156 | UPPC_ExceptionType, |
7157 | |
7158 | /// Partial specialization. |
7159 | UPPC_PartialSpecialization, |
7160 | |
7161 | /// Microsoft __if_exists. |
7162 | UPPC_IfExists, |
7163 | |
7164 | /// Microsoft __if_not_exists. |
7165 | UPPC_IfNotExists, |
7166 | |
7167 | /// Lambda expression. |
7168 | UPPC_Lambda, |
7169 | |
7170 | /// Block expression, |
7171 | UPPC_Block |
7172 | }; |
7173 | |
7174 | /// Diagnose unexpanded parameter packs. |
7175 | /// |
7176 | /// \param Loc The location at which we should emit the diagnostic. |
7177 | /// |
7178 | /// \param UPPC The context in which we are diagnosing unexpanded |
7179 | /// parameter packs. |
7180 | /// |
7181 | /// \param Unexpanded the set of unexpanded parameter packs. |
7182 | /// |
7183 | /// \returns true if an error occurred, false otherwise. |
7184 | bool DiagnoseUnexpandedParameterPacks(SourceLocation Loc, |
7185 | UnexpandedParameterPackContext UPPC, |
7186 | ArrayRef<UnexpandedParameterPack> Unexpanded); |
7187 | |
7188 | /// If the given type contains an unexpanded parameter pack, |
7189 | /// diagnose the error. |
7190 | /// |
7191 | /// \param Loc The source location where a diagnostc should be emitted. |
7192 | /// |
7193 | /// \param T The type that is being checked for unexpanded parameter |
7194 | /// packs. |
7195 | /// |
7196 | /// \returns true if an error occurred, false otherwise. |
7197 | bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, TypeSourceInfo *T, |
7198 | UnexpandedParameterPackContext UPPC); |
7199 | |
7200 | /// If the given expression contains an unexpanded parameter |
7201 | /// pack, diagnose the error. |
7202 | /// |
7203 | /// \param E The expression that is being checked for unexpanded |
7204 | /// parameter packs. |
7205 | /// |
7206 | /// \returns true if an error occurred, false otherwise. |
7207 | bool DiagnoseUnexpandedParameterPack(Expr *E, |
7208 | UnexpandedParameterPackContext UPPC = UPPC_Expression); |
7209 | |
7210 | /// If the given nested-name-specifier contains an unexpanded |
7211 | /// parameter pack, diagnose the error. |
7212 | /// |
7213 | /// \param SS The nested-name-specifier that is being checked for |
7214 | /// unexpanded parameter packs. |
7215 | /// |
7216 | /// \returns true if an error occurred, false otherwise. |
7217 | bool DiagnoseUnexpandedParameterPack(const CXXScopeSpec &SS, |
7218 | UnexpandedParameterPackContext UPPC); |
7219 | |
7220 | /// If the given name contains an unexpanded parameter pack, |
7221 | /// diagnose the error. |
7222 | /// |
7223 | /// \param NameInfo The name (with source location information) that |
7224 | /// is being checked for unexpanded parameter packs. |
7225 | /// |
7226 | /// \returns true if an error occurred, false otherwise. |
7227 | bool DiagnoseUnexpandedParameterPack(const DeclarationNameInfo &NameInfo, |
7228 | UnexpandedParameterPackContext UPPC); |
7229 | |
7230 | /// If the given template name contains an unexpanded parameter pack, |
7231 | /// diagnose the error. |
7232 | /// |
7233 | /// \param Loc The location of the template name. |
7234 | /// |
7235 | /// \param Template The template name that is being checked for unexpanded |
7236 | /// parameter packs. |
7237 | /// |
7238 | /// \returns true if an error occurred, false otherwise. |
7239 | bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, |
7240 | TemplateName Template, |
7241 | UnexpandedParameterPackContext UPPC); |
7242 | |
7243 | /// If the given template argument contains an unexpanded parameter |
7244 | /// pack, diagnose the error. |
7245 | /// |
7246 | /// \param Arg The template argument that is being checked for unexpanded |
7247 | /// parameter packs. |
7248 | /// |
7249 | /// \returns true if an error occurred, false otherwise. |
7250 | bool DiagnoseUnexpandedParameterPack(TemplateArgumentLoc Arg, |
7251 | UnexpandedParameterPackContext UPPC); |
7252 | |
7253 | /// Collect the set of unexpanded parameter packs within the given |
7254 | /// template argument. |
7255 | /// |
7256 | /// \param Arg The template argument that will be traversed to find |
7257 | /// unexpanded parameter packs. |
7258 | void collectUnexpandedParameterPacks(TemplateArgument Arg, |
7259 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
7260 | |
7261 | /// Collect the set of unexpanded parameter packs within the given |
7262 | /// template argument. |
7263 | /// |
7264 | /// \param Arg The template argument that will be traversed to find |
7265 | /// unexpanded parameter packs. |
7266 | void collectUnexpandedParameterPacks(TemplateArgumentLoc Arg, |
7267 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
7268 | |
7269 | /// Collect the set of unexpanded parameter packs within the given |
7270 | /// type. |
7271 | /// |
7272 | /// \param T The type that will be traversed to find |
7273 | /// unexpanded parameter packs. |
7274 | void collectUnexpandedParameterPacks(QualType T, |
7275 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
7276 | |
7277 | /// Collect the set of unexpanded parameter packs within the given |
7278 | /// type. |
7279 | /// |
7280 | /// \param TL The type that will be traversed to find |
7281 | /// unexpanded parameter packs. |
7282 | void collectUnexpandedParameterPacks(TypeLoc TL, |
7283 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
7284 | |
7285 | /// Collect the set of unexpanded parameter packs within the given |
7286 | /// nested-name-specifier. |
7287 | /// |
7288 | /// \param NNS The nested-name-specifier that will be traversed to find |
7289 | /// unexpanded parameter packs. |
7290 | void collectUnexpandedParameterPacks(NestedNameSpecifierLoc NNS, |
7291 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
7292 | |
7293 | /// Collect the set of unexpanded parameter packs within the given |
7294 | /// name. |
7295 | /// |
7296 | /// \param NameInfo The name that will be traversed to find |
7297 | /// unexpanded parameter packs. |
7298 | void collectUnexpandedParameterPacks(const DeclarationNameInfo &NameInfo, |
7299 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
7300 | |
7301 | /// Invoked when parsing a template argument followed by an |
7302 | /// ellipsis, which creates a pack expansion. |
7303 | /// |
7304 | /// \param Arg The template argument preceding the ellipsis, which |
7305 | /// may already be invalid. |
7306 | /// |
7307 | /// \param EllipsisLoc The location of the ellipsis. |
7308 | ParsedTemplateArgument ActOnPackExpansion(const ParsedTemplateArgument &Arg, |
7309 | SourceLocation EllipsisLoc); |
7310 | |
7311 | /// Invoked when parsing a type followed by an ellipsis, which |
7312 | /// creates a pack expansion. |
7313 | /// |
7314 | /// \param Type The type preceding the ellipsis, which will become |
7315 | /// the pattern of the pack expansion. |
7316 | /// |
7317 | /// \param EllipsisLoc The location of the ellipsis. |
7318 | TypeResult ActOnPackExpansion(ParsedType Type, SourceLocation EllipsisLoc); |
7319 | |
7320 | /// Construct a pack expansion type from the pattern of the pack |
7321 | /// expansion. |
7322 | TypeSourceInfo *CheckPackExpansion(TypeSourceInfo *Pattern, |
7323 | SourceLocation EllipsisLoc, |
7324 | Optional<unsigned> NumExpansions); |
7325 | |
7326 | /// Construct a pack expansion type from the pattern of the pack |
7327 | /// expansion. |
7328 | QualType CheckPackExpansion(QualType Pattern, |
7329 | SourceRange PatternRange, |
7330 | SourceLocation EllipsisLoc, |
7331 | Optional<unsigned> NumExpansions); |
7332 | |
7333 | /// Invoked when parsing an expression followed by an ellipsis, which |
7334 | /// creates a pack expansion. |
7335 | /// |
7336 | /// \param Pattern The expression preceding the ellipsis, which will become |
7337 | /// the pattern of the pack expansion. |
7338 | /// |
7339 | /// \param EllipsisLoc The location of the ellipsis. |
7340 | ExprResult ActOnPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc); |
7341 | |
7342 | /// Invoked when parsing an expression followed by an ellipsis, which |
7343 | /// creates a pack expansion. |
7344 | /// |
7345 | /// \param Pattern The expression preceding the ellipsis, which will become |
7346 | /// the pattern of the pack expansion. |
7347 | /// |
7348 | /// \param EllipsisLoc The location of the ellipsis. |
7349 | ExprResult CheckPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc, |
7350 | Optional<unsigned> NumExpansions); |
7351 | |
7352 | /// Determine whether we could expand a pack expansion with the |
7353 | /// given set of parameter packs into separate arguments by repeatedly |
7354 | /// transforming the pattern. |
7355 | /// |
7356 | /// \param EllipsisLoc The location of the ellipsis that identifies the |
7357 | /// pack expansion. |
7358 | /// |
7359 | /// \param PatternRange The source range that covers the entire pattern of |
7360 | /// the pack expansion. |
7361 | /// |
7362 | /// \param Unexpanded The set of unexpanded parameter packs within the |
7363 | /// pattern. |
7364 | /// |
7365 | /// \param ShouldExpand Will be set to \c true if the transformer should |
7366 | /// expand the corresponding pack expansions into separate arguments. When |
7367 | /// set, \c NumExpansions must also be set. |
7368 | /// |
7369 | /// \param RetainExpansion Whether the caller should add an unexpanded |
7370 | /// pack expansion after all of the expanded arguments. This is used |
7371 | /// when extending explicitly-specified template argument packs per |
7372 | /// C++0x [temp.arg.explicit]p9. |
7373 | /// |
7374 | /// \param NumExpansions The number of separate arguments that will be in |
7375 | /// the expanded form of the corresponding pack expansion. This is both an |
7376 | /// input and an output parameter, which can be set by the caller if the |
7377 | /// number of expansions is known a priori (e.g., due to a prior substitution) |
7378 | /// and will be set by the callee when the number of expansions is known. |
7379 | /// The callee must set this value when \c ShouldExpand is \c true; it may |
7380 | /// set this value in other cases. |
7381 | /// |
7382 | /// \returns true if an error occurred (e.g., because the parameter packs |
7383 | /// are to be instantiated with arguments of different lengths), false |
7384 | /// otherwise. If false, \c ShouldExpand (and possibly \c NumExpansions) |
7385 | /// must be set. |
7386 | bool CheckParameterPacksForExpansion(SourceLocation EllipsisLoc, |
7387 | SourceRange PatternRange, |
7388 | ArrayRef<UnexpandedParameterPack> Unexpanded, |
7389 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7390 | bool &ShouldExpand, |
7391 | bool &RetainExpansion, |
7392 | Optional<unsigned> &NumExpansions); |
7393 | |
7394 | /// Determine the number of arguments in the given pack expansion |
7395 | /// type. |
7396 | /// |
7397 | /// This routine assumes that the number of arguments in the expansion is |
7398 | /// consistent across all of the unexpanded parameter packs in its pattern. |
7399 | /// |
7400 | /// Returns an empty Optional if the type can't be expanded. |
7401 | Optional<unsigned> getNumArgumentsInExpansion(QualType T, |
7402 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7403 | |
7404 | /// Determine whether the given declarator contains any unexpanded |
7405 | /// parameter packs. |
7406 | /// |
7407 | /// This routine is used by the parser to disambiguate function declarators |
7408 | /// with an ellipsis prior to the ')', e.g., |
7409 | /// |
7410 | /// \code |
7411 | /// void f(T...); |
7412 | /// \endcode |
7413 | /// |
7414 | /// To determine whether we have an (unnamed) function parameter pack or |
7415 | /// a variadic function. |
7416 | /// |
7417 | /// \returns true if the declarator contains any unexpanded parameter packs, |
7418 | /// false otherwise. |
7419 | bool containsUnexpandedParameterPacks(Declarator &D); |
7420 | |
7421 | /// Returns the pattern of the pack expansion for a template argument. |
7422 | /// |
7423 | /// \param OrigLoc The template argument to expand. |
7424 | /// |
7425 | /// \param Ellipsis Will be set to the location of the ellipsis. |
7426 | /// |
7427 | /// \param NumExpansions Will be set to the number of expansions that will |
7428 | /// be generated from this pack expansion, if known a priori. |
7429 | TemplateArgumentLoc getTemplateArgumentPackExpansionPattern( |
7430 | TemplateArgumentLoc OrigLoc, |
7431 | SourceLocation &Ellipsis, |
7432 | Optional<unsigned> &NumExpansions) const; |
7433 | |
7434 | /// Given a template argument that contains an unexpanded parameter pack, but |
7435 | /// which has already been substituted, attempt to determine the number of |
7436 | /// elements that will be produced once this argument is fully-expanded. |
7437 | /// |
7438 | /// This is intended for use when transforming 'sizeof...(Arg)' in order to |
7439 | /// avoid actually expanding the pack where possible. |
7440 | Optional<unsigned> getFullyPackExpandedSize(TemplateArgument Arg); |
7441 | |
7442 | //===--------------------------------------------------------------------===// |
7443 | // C++ Template Argument Deduction (C++ [temp.deduct]) |
7444 | //===--------------------------------------------------------------------===// |
7445 | |
7446 | /// Adjust the type \p ArgFunctionType to match the calling convention, |
7447 | /// noreturn, and optionally the exception specification of \p FunctionType. |
7448 | /// Deduction often wants to ignore these properties when matching function |
7449 | /// types. |
7450 | QualType adjustCCAndNoReturn(QualType ArgFunctionType, QualType FunctionType, |
7451 | bool AdjustExceptionSpec = false); |
7452 | |
7453 | /// Describes the result of template argument deduction. |
7454 | /// |
7455 | /// The TemplateDeductionResult enumeration describes the result of |
7456 | /// template argument deduction, as returned from |
7457 | /// DeduceTemplateArguments(). The separate TemplateDeductionInfo |
7458 | /// structure provides additional information about the results of |
7459 | /// template argument deduction, e.g., the deduced template argument |
7460 | /// list (if successful) or the specific template parameters or |
7461 | /// deduced arguments that were involved in the failure. |
7462 | enum TemplateDeductionResult { |
7463 | /// Template argument deduction was successful. |
7464 | TDK_Success = 0, |
7465 | /// The declaration was invalid; do nothing. |
7466 | TDK_Invalid, |
7467 | /// Template argument deduction exceeded the maximum template |
7468 | /// instantiation depth (which has already been diagnosed). |
7469 | TDK_InstantiationDepth, |
7470 | /// Template argument deduction did not deduce a value |
7471 | /// for every template parameter. |
7472 | TDK_Incomplete, |
7473 | /// Template argument deduction did not deduce a value for every |
7474 | /// expansion of an expanded template parameter pack. |
7475 | TDK_IncompletePack, |
7476 | /// Template argument deduction produced inconsistent |
7477 | /// deduced values for the given template parameter. |
7478 | TDK_Inconsistent, |
7479 | /// Template argument deduction failed due to inconsistent |
7480 | /// cv-qualifiers on a template parameter type that would |
7481 | /// otherwise be deduced, e.g., we tried to deduce T in "const T" |
7482 | /// but were given a non-const "X". |
7483 | TDK_Underqualified, |
7484 | /// Substitution of the deduced template argument values |
7485 | /// resulted in an error. |
7486 | TDK_SubstitutionFailure, |
7487 | /// After substituting deduced template arguments, a dependent |
7488 | /// parameter type did not match the corresponding argument. |
7489 | TDK_DeducedMismatch, |
7490 | /// After substituting deduced template arguments, an element of |
7491 | /// a dependent parameter type did not match the corresponding element |
7492 | /// of the corresponding argument (when deducing from an initializer list). |
7493 | TDK_DeducedMismatchNested, |
7494 | /// A non-depnedent component of the parameter did not match the |
7495 | /// corresponding component of the argument. |
7496 | TDK_NonDeducedMismatch, |
7497 | /// When performing template argument deduction for a function |
7498 | /// template, there were too many call arguments. |
7499 | TDK_TooManyArguments, |
7500 | /// When performing template argument deduction for a function |
7501 | /// template, there were too few call arguments. |
7502 | TDK_TooFewArguments, |
7503 | /// The explicitly-specified template arguments were not valid |
7504 | /// template arguments for the given template. |
7505 | TDK_InvalidExplicitArguments, |
7506 | /// Checking non-dependent argument conversions failed. |
7507 | TDK_NonDependentConversionFailure, |
7508 | /// Deduction failed; that's all we know. |
7509 | TDK_MiscellaneousDeductionFailure, |
7510 | /// CUDA Target attributes do not match. |
7511 | TDK_CUDATargetMismatch |
7512 | }; |
7513 | |
7514 | TemplateDeductionResult |
7515 | DeduceTemplateArguments(ClassTemplatePartialSpecializationDecl *Partial, |
7516 | const TemplateArgumentList &TemplateArgs, |
7517 | sema::TemplateDeductionInfo &Info); |
7518 | |
7519 | TemplateDeductionResult |
7520 | DeduceTemplateArguments(VarTemplatePartialSpecializationDecl *Partial, |
7521 | const TemplateArgumentList &TemplateArgs, |
7522 | sema::TemplateDeductionInfo &Info); |
7523 | |
7524 | TemplateDeductionResult SubstituteExplicitTemplateArguments( |
7525 | FunctionTemplateDecl *FunctionTemplate, |
7526 | TemplateArgumentListInfo &ExplicitTemplateArgs, |
7527 | SmallVectorImpl<DeducedTemplateArgument> &Deduced, |
7528 | SmallVectorImpl<QualType> &ParamTypes, QualType *FunctionType, |
7529 | sema::TemplateDeductionInfo &Info); |
7530 | |
7531 | /// brief A function argument from which we performed template argument |
7532 | // deduction for a call. |
7533 | struct OriginalCallArg { |
7534 | OriginalCallArg(QualType OriginalParamType, bool DecomposedParam, |
7535 | unsigned ArgIdx, QualType OriginalArgType) |
7536 | : OriginalParamType(OriginalParamType), |
7537 | DecomposedParam(DecomposedParam), ArgIdx(ArgIdx), |
7538 | OriginalArgType(OriginalArgType) {} |
7539 | |
7540 | QualType OriginalParamType; |
7541 | bool DecomposedParam; |
7542 | unsigned ArgIdx; |
7543 | QualType OriginalArgType; |
7544 | }; |
7545 | |
7546 | TemplateDeductionResult FinishTemplateArgumentDeduction( |
7547 | FunctionTemplateDecl *FunctionTemplate, |
7548 | SmallVectorImpl<DeducedTemplateArgument> &Deduced, |
7549 | unsigned NumExplicitlySpecified, FunctionDecl *&Specialization, |
7550 | sema::TemplateDeductionInfo &Info, |
7551 | SmallVectorImpl<OriginalCallArg> const *OriginalCallArgs = nullptr, |
7552 | bool PartialOverloading = false, |
7553 | llvm::function_ref<bool()> CheckNonDependent = []{ return false; }); |
7554 | |
7555 | TemplateDeductionResult DeduceTemplateArguments( |
7556 | FunctionTemplateDecl *FunctionTemplate, |
7557 | TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef<Expr *> Args, |
7558 | FunctionDecl *&Specialization, sema::TemplateDeductionInfo &Info, |
7559 | bool PartialOverloading, |
7560 | llvm::function_ref<bool(ArrayRef<QualType>)> CheckNonDependent); |
7561 | |
7562 | TemplateDeductionResult |
7563 | DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, |
7564 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
7565 | QualType ArgFunctionType, |
7566 | FunctionDecl *&Specialization, |
7567 | sema::TemplateDeductionInfo &Info, |
7568 | bool IsAddressOfFunction = false); |
7569 | |
7570 | TemplateDeductionResult |
7571 | DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, |
7572 | QualType ToType, |
7573 | CXXConversionDecl *&Specialization, |
7574 | sema::TemplateDeductionInfo &Info); |
7575 | |
7576 | TemplateDeductionResult |
7577 | DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, |
7578 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
7579 | FunctionDecl *&Specialization, |
7580 | sema::TemplateDeductionInfo &Info, |
7581 | bool IsAddressOfFunction = false); |
7582 | |
7583 | /// Substitute Replacement for \p auto in \p TypeWithAuto |
7584 | QualType SubstAutoType(QualType TypeWithAuto, QualType Replacement); |
7585 | /// Substitute Replacement for auto in TypeWithAuto |
7586 | TypeSourceInfo* SubstAutoTypeSourceInfo(TypeSourceInfo *TypeWithAuto, |
7587 | QualType Replacement); |
7588 | /// Completely replace the \c auto in \p TypeWithAuto by |
7589 | /// \p Replacement. This does not retain any \c auto type sugar. |
7590 | QualType ReplaceAutoType(QualType TypeWithAuto, QualType Replacement); |
7591 | |
7592 | /// Result type of DeduceAutoType. |
7593 | enum DeduceAutoResult { |
7594 | DAR_Succeeded, |
7595 | DAR_Failed, |
7596 | DAR_FailedAlreadyDiagnosed |
7597 | }; |
7598 | |
7599 | DeduceAutoResult |
7600 | DeduceAutoType(TypeSourceInfo *AutoType, Expr *&Initializer, QualType &Result, |
7601 | Optional<unsigned> DependentDeductionDepth = None); |
7602 | DeduceAutoResult |
7603 | DeduceAutoType(TypeLoc AutoTypeLoc, Expr *&Initializer, QualType &Result, |
7604 | Optional<unsigned> DependentDeductionDepth = None); |
7605 | void DiagnoseAutoDeductionFailure(VarDecl *VDecl, Expr *Init); |
7606 | bool DeduceReturnType(FunctionDecl *FD, SourceLocation Loc, |
7607 | bool Diagnose = true); |
7608 | |
7609 | /// Declare implicit deduction guides for a class template if we've |
7610 | /// not already done so. |
7611 | void DeclareImplicitDeductionGuides(TemplateDecl *Template, |
7612 | SourceLocation Loc); |
7613 | |
7614 | QualType DeduceTemplateSpecializationFromInitializer( |
7615 | TypeSourceInfo *TInfo, const InitializedEntity &Entity, |
7616 | const InitializationKind &Kind, MultiExprArg Init); |
7617 | |
7618 | QualType deduceVarTypeFromInitializer(VarDecl *VDecl, DeclarationName Name, |
7619 | QualType Type, TypeSourceInfo *TSI, |
7620 | SourceRange Range, bool DirectInit, |
7621 | Expr *Init); |
7622 | |
7623 | TypeLoc getReturnTypeLoc(FunctionDecl *FD) const; |
7624 | |
7625 | bool DeduceFunctionTypeFromReturnExpr(FunctionDecl *FD, |
7626 | SourceLocation ReturnLoc, |
7627 | Expr *&RetExpr, AutoType *AT); |
7628 | |
7629 | FunctionTemplateDecl *getMoreSpecializedTemplate(FunctionTemplateDecl *FT1, |
7630 | FunctionTemplateDecl *FT2, |
7631 | SourceLocation Loc, |
7632 | TemplatePartialOrderingContext TPOC, |
7633 | unsigned NumCallArguments1, |
7634 | unsigned NumCallArguments2); |
7635 | UnresolvedSetIterator |
7636 | getMostSpecialized(UnresolvedSetIterator SBegin, UnresolvedSetIterator SEnd, |
7637 | TemplateSpecCandidateSet &FailedCandidates, |
7638 | SourceLocation Loc, |
7639 | const PartialDiagnostic &NoneDiag, |
7640 | const PartialDiagnostic &AmbigDiag, |
7641 | const PartialDiagnostic &CandidateDiag, |
7642 | bool Complain = true, QualType TargetType = QualType()); |
7643 | |
7644 | ClassTemplatePartialSpecializationDecl * |
7645 | getMoreSpecializedPartialSpecialization( |
7646 | ClassTemplatePartialSpecializationDecl *PS1, |
7647 | ClassTemplatePartialSpecializationDecl *PS2, |
7648 | SourceLocation Loc); |
7649 | |
7650 | bool isMoreSpecializedThanPrimary(ClassTemplatePartialSpecializationDecl *T, |
7651 | sema::TemplateDeductionInfo &Info); |
7652 | |
7653 | VarTemplatePartialSpecializationDecl *getMoreSpecializedPartialSpecialization( |
7654 | VarTemplatePartialSpecializationDecl *PS1, |
7655 | VarTemplatePartialSpecializationDecl *PS2, SourceLocation Loc); |
7656 | |
7657 | bool isMoreSpecializedThanPrimary(VarTemplatePartialSpecializationDecl *T, |
7658 | sema::TemplateDeductionInfo &Info); |
7659 | |
7660 | bool isTemplateTemplateParameterAtLeastAsSpecializedAs( |
7661 | TemplateParameterList *P, TemplateDecl *AArg, SourceLocation Loc); |
7662 | |
7663 | void MarkUsedTemplateParameters(const TemplateArgumentList &TemplateArgs, |
7664 | bool OnlyDeduced, |
7665 | unsigned Depth, |
7666 | llvm::SmallBitVector &Used); |
7667 | void MarkDeducedTemplateParameters( |
7668 | const FunctionTemplateDecl *FunctionTemplate, |
7669 | llvm::SmallBitVector &Deduced) { |
7670 | return MarkDeducedTemplateParameters(Context, FunctionTemplate, Deduced); |
7671 | } |
7672 | static void MarkDeducedTemplateParameters(ASTContext &Ctx, |
7673 | const FunctionTemplateDecl *FunctionTemplate, |
7674 | llvm::SmallBitVector &Deduced); |
7675 | |
7676 | //===--------------------------------------------------------------------===// |
7677 | // C++ Template Instantiation |
7678 | // |
7679 | |
7680 | MultiLevelTemplateArgumentList |
7681 | getTemplateInstantiationArgs(NamedDecl *D, |
7682 | const TemplateArgumentList *Innermost = nullptr, |
7683 | bool RelativeToPrimary = false, |
7684 | const FunctionDecl *Pattern = nullptr); |
7685 | |
7686 | /// A context in which code is being synthesized (where a source location |
7687 | /// alone is not sufficient to identify the context). This covers template |
7688 | /// instantiation and various forms of implicitly-generated functions. |
7689 | struct CodeSynthesisContext { |
7690 | /// The kind of template instantiation we are performing |
7691 | enum SynthesisKind { |
7692 | /// We are instantiating a template declaration. The entity is |
7693 | /// the declaration we're instantiating (e.g., a CXXRecordDecl). |
7694 | TemplateInstantiation, |
7695 | |
7696 | /// We are instantiating a default argument for a template |
7697 | /// parameter. The Entity is the template parameter whose argument is |
7698 | /// being instantiated, the Template is the template, and the |
7699 | /// TemplateArgs/NumTemplateArguments provide the template arguments as |
7700 | /// specified. |
7701 | DefaultTemplateArgumentInstantiation, |
7702 | |
7703 | /// We are instantiating a default argument for a function. |
7704 | /// The Entity is the ParmVarDecl, and TemplateArgs/NumTemplateArgs |
7705 | /// provides the template arguments as specified. |
7706 | DefaultFunctionArgumentInstantiation, |
7707 | |
7708 | /// We are substituting explicit template arguments provided for |
7709 | /// a function template. The entity is a FunctionTemplateDecl. |
7710 | ExplicitTemplateArgumentSubstitution, |
7711 | |
7712 | /// We are substituting template argument determined as part of |
7713 | /// template argument deduction for either a class template |
7714 | /// partial specialization or a function template. The |
7715 | /// Entity is either a {Class|Var}TemplatePartialSpecializationDecl or |
7716 | /// a TemplateDecl. |
7717 | DeducedTemplateArgumentSubstitution, |
7718 | |
7719 | /// We are substituting prior template arguments into a new |
7720 | /// template parameter. The template parameter itself is either a |
7721 | /// NonTypeTemplateParmDecl or a TemplateTemplateParmDecl. |
7722 | PriorTemplateArgumentSubstitution, |
7723 | |
7724 | /// We are checking the validity of a default template argument that |
7725 | /// has been used when naming a template-id. |
7726 | DefaultTemplateArgumentChecking, |
7727 | |
7728 | /// We are computing the exception specification for a defaulted special |
7729 | /// member function. |
7730 | ExceptionSpecEvaluation, |
7731 | |
7732 | /// We are instantiating the exception specification for a function |
7733 | /// template which was deferred until it was needed. |
7734 | ExceptionSpecInstantiation, |
7735 | |
7736 | /// We are declaring an implicit special member function. |
7737 | DeclaringSpecialMember, |
7738 | |
7739 | /// We are defining a synthesized function (such as a defaulted special |
7740 | /// member). |
7741 | DefiningSynthesizedFunction, |
7742 | |
7743 | // We are checking the constraints associated with a constrained entity or |
7744 | // the constraint expression of a concept. This includes the checks that |
7745 | // atomic constraints have the type 'bool' and that they can be constant |
7746 | // evaluated. |
7747 | ConstraintsCheck, |
7748 | |
7749 | // We are substituting template arguments into a constraint expression. |
7750 | ConstraintSubstitution, |
7751 | |
7752 | /// We are rewriting a comparison operator in terms of an operator<=>. |
7753 | RewritingOperatorAsSpaceship, |
7754 | |
7755 | /// Added for Template instantiation observation. |
7756 | /// Memoization means we are _not_ instantiating a template because |
7757 | /// it is already instantiated (but we entered a context where we |
7758 | /// would have had to if it was not already instantiated). |
7759 | Memoization |
7760 | } Kind; |
7761 | |
7762 | /// Was the enclosing context a non-instantiation SFINAE context? |
7763 | bool SavedInNonInstantiationSFINAEContext; |
7764 | |
7765 | /// The point of instantiation or synthesis within the source code. |
7766 | SourceLocation PointOfInstantiation; |
7767 | |
7768 | /// The entity that is being synthesized. |
7769 | Decl *Entity; |
7770 | |
7771 | /// The template (or partial specialization) in which we are |
7772 | /// performing the instantiation, for substitutions of prior template |
7773 | /// arguments. |
7774 | NamedDecl *Template; |
7775 | |
7776 | /// The list of template arguments we are substituting, if they |
7777 | /// are not part of the entity. |
7778 | const TemplateArgument *TemplateArgs; |
7779 | |
7780 | // FIXME: Wrap this union around more members, or perhaps store the |
7781 | // kind-specific members in the RAII object owning the context. |
7782 | union { |
7783 | /// The number of template arguments in TemplateArgs. |
7784 | unsigned NumTemplateArgs; |
7785 | |
7786 | /// The special member being declared or defined. |
7787 | CXXSpecialMember SpecialMember; |
7788 | }; |
7789 | |
7790 | ArrayRef<TemplateArgument> template_arguments() const { |
7791 | assert(Kind != DeclaringSpecialMember)((Kind != DeclaringSpecialMember) ? static_cast<void> ( 0) : __assert_fail ("Kind != DeclaringSpecialMember", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 7791, __PRETTY_FUNCTION__)); |
7792 | return {TemplateArgs, NumTemplateArgs}; |
7793 | } |
7794 | |
7795 | /// The template deduction info object associated with the |
7796 | /// substitution or checking of explicit or deduced template arguments. |
7797 | sema::TemplateDeductionInfo *DeductionInfo; |
7798 | |
7799 | /// The source range that covers the construct that cause |
7800 | /// the instantiation, e.g., the template-id that causes a class |
7801 | /// template instantiation. |
7802 | SourceRange InstantiationRange; |
7803 | |
7804 | CodeSynthesisContext() |
7805 | : Kind(TemplateInstantiation), |
7806 | SavedInNonInstantiationSFINAEContext(false), Entity(nullptr), |
7807 | Template(nullptr), TemplateArgs(nullptr), NumTemplateArgs(0), |
7808 | DeductionInfo(nullptr) {} |
7809 | |
7810 | /// Determines whether this template is an actual instantiation |
7811 | /// that should be counted toward the maximum instantiation depth. |
7812 | bool isInstantiationRecord() const; |
7813 | }; |
7814 | |
7815 | /// List of active code synthesis contexts. |
7816 | /// |
7817 | /// This vector is treated as a stack. As synthesis of one entity requires |
7818 | /// synthesis of another, additional contexts are pushed onto the stack. |
7819 | SmallVector<CodeSynthesisContext, 16> CodeSynthesisContexts; |
7820 | |
7821 | /// Specializations whose definitions are currently being instantiated. |
7822 | llvm::DenseSet<std::pair<Decl *, unsigned>> InstantiatingSpecializations; |
7823 | |
7824 | /// Non-dependent types used in templates that have already been instantiated |
7825 | /// by some template instantiation. |
7826 | llvm::DenseSet<QualType> InstantiatedNonDependentTypes; |
7827 | |
7828 | /// Extra modules inspected when performing a lookup during a template |
7829 | /// instantiation. Computed lazily. |
7830 | SmallVector<Module*, 16> CodeSynthesisContextLookupModules; |
7831 | |
7832 | /// Cache of additional modules that should be used for name lookup |
7833 | /// within the current template instantiation. Computed lazily; use |
7834 | /// getLookupModules() to get a complete set. |
7835 | llvm::DenseSet<Module*> LookupModulesCache; |
7836 | |
7837 | /// Get the set of additional modules that should be checked during |
7838 | /// name lookup. A module and its imports become visible when instanting a |
7839 | /// template defined within it. |
7840 | llvm::DenseSet<Module*> &getLookupModules(); |
7841 | |
7842 | /// Map from the most recent declaration of a namespace to the most |
7843 | /// recent visible declaration of that namespace. |
7844 | llvm::DenseMap<NamedDecl*, NamedDecl*> VisibleNamespaceCache; |
7845 | |
7846 | /// Whether we are in a SFINAE context that is not associated with |
7847 | /// template instantiation. |
7848 | /// |
7849 | /// This is used when setting up a SFINAE trap (\c see SFINAETrap) outside |
7850 | /// of a template instantiation or template argument deduction. |
7851 | bool InNonInstantiationSFINAEContext; |
7852 | |
7853 | /// The number of \p CodeSynthesisContexts that are not template |
7854 | /// instantiations and, therefore, should not be counted as part of the |
7855 | /// instantiation depth. |
7856 | /// |
7857 | /// When the instantiation depth reaches the user-configurable limit |
7858 | /// \p LangOptions::InstantiationDepth we will abort instantiation. |
7859 | // FIXME: Should we have a similar limit for other forms of synthesis? |
7860 | unsigned NonInstantiationEntries; |
7861 | |
7862 | /// The depth of the context stack at the point when the most recent |
7863 | /// error or warning was produced. |
7864 | /// |
7865 | /// This value is used to suppress printing of redundant context stacks |
7866 | /// when there are multiple errors or warnings in the same instantiation. |
7867 | // FIXME: Does this belong in Sema? It's tough to implement it anywhere else. |
7868 | unsigned LastEmittedCodeSynthesisContextDepth = 0; |
7869 | |
7870 | /// The template instantiation callbacks to trace or track |
7871 | /// instantiations (objects can be chained). |
7872 | /// |
7873 | /// This callbacks is used to print, trace or track template |
7874 | /// instantiations as they are being constructed. |
7875 | std::vector<std::unique_ptr<TemplateInstantiationCallback>> |
7876 | TemplateInstCallbacks; |
7877 | |
7878 | /// The current index into pack expansion arguments that will be |
7879 | /// used for substitution of parameter packs. |
7880 | /// |
7881 | /// The pack expansion index will be -1 to indicate that parameter packs |
7882 | /// should be instantiated as themselves. Otherwise, the index specifies |
7883 | /// which argument within the parameter pack will be used for substitution. |
7884 | int ArgumentPackSubstitutionIndex; |
7885 | |
7886 | /// RAII object used to change the argument pack substitution index |
7887 | /// within a \c Sema object. |
7888 | /// |
7889 | /// See \c ArgumentPackSubstitutionIndex for more information. |
7890 | class ArgumentPackSubstitutionIndexRAII { |
7891 | Sema &Self; |
7892 | int OldSubstitutionIndex; |
7893 | |
7894 | public: |
7895 | ArgumentPackSubstitutionIndexRAII(Sema &Self, int NewSubstitutionIndex) |
7896 | : Self(Self), OldSubstitutionIndex(Self.ArgumentPackSubstitutionIndex) { |
7897 | Self.ArgumentPackSubstitutionIndex = NewSubstitutionIndex; |
7898 | } |
7899 | |
7900 | ~ArgumentPackSubstitutionIndexRAII() { |
7901 | Self.ArgumentPackSubstitutionIndex = OldSubstitutionIndex; |
7902 | } |
7903 | }; |
7904 | |
7905 | friend class ArgumentPackSubstitutionRAII; |
7906 | |
7907 | /// For each declaration that involved template argument deduction, the |
7908 | /// set of diagnostics that were suppressed during that template argument |
7909 | /// deduction. |
7910 | /// |
7911 | /// FIXME: Serialize this structure to the AST file. |
7912 | typedef llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> > |
7913 | SuppressedDiagnosticsMap; |
7914 | SuppressedDiagnosticsMap SuppressedDiagnostics; |
7915 | |
7916 | /// A stack object to be created when performing template |
7917 | /// instantiation. |
7918 | /// |
7919 | /// Construction of an object of type \c InstantiatingTemplate |
7920 | /// pushes the current instantiation onto the stack of active |
7921 | /// instantiations. If the size of this stack exceeds the maximum |
7922 | /// number of recursive template instantiations, construction |
7923 | /// produces an error and evaluates true. |
7924 | /// |
7925 | /// Destruction of this object will pop the named instantiation off |
7926 | /// the stack. |
7927 | struct InstantiatingTemplate { |
7928 | /// Note that we are instantiating a class template, |
7929 | /// function template, variable template, alias template, |
7930 | /// or a member thereof. |
7931 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7932 | Decl *Entity, |
7933 | SourceRange InstantiationRange = SourceRange()); |
7934 | |
7935 | struct ExceptionSpecification {}; |
7936 | /// Note that we are instantiating an exception specification |
7937 | /// of a function template. |
7938 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7939 | FunctionDecl *Entity, ExceptionSpecification, |
7940 | SourceRange InstantiationRange = SourceRange()); |
7941 | |
7942 | /// Note that we are instantiating a default argument in a |
7943 | /// template-id. |
7944 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7945 | TemplateParameter Param, TemplateDecl *Template, |
7946 | ArrayRef<TemplateArgument> TemplateArgs, |
7947 | SourceRange InstantiationRange = SourceRange()); |
7948 | |
7949 | /// Note that we are substituting either explicitly-specified or |
7950 | /// deduced template arguments during function template argument deduction. |
7951 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7952 | FunctionTemplateDecl *FunctionTemplate, |
7953 | ArrayRef<TemplateArgument> TemplateArgs, |
7954 | CodeSynthesisContext::SynthesisKind Kind, |
7955 | sema::TemplateDeductionInfo &DeductionInfo, |
7956 | SourceRange InstantiationRange = SourceRange()); |
7957 | |
7958 | /// Note that we are instantiating as part of template |
7959 | /// argument deduction for a class template declaration. |
7960 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7961 | TemplateDecl *Template, |
7962 | ArrayRef<TemplateArgument> TemplateArgs, |
7963 | sema::TemplateDeductionInfo &DeductionInfo, |
7964 | SourceRange InstantiationRange = SourceRange()); |
7965 | |
7966 | /// Note that we are instantiating as part of template |
7967 | /// argument deduction for a class template partial |
7968 | /// specialization. |
7969 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7970 | ClassTemplatePartialSpecializationDecl *PartialSpec, |
7971 | ArrayRef<TemplateArgument> TemplateArgs, |
7972 | sema::TemplateDeductionInfo &DeductionInfo, |
7973 | SourceRange InstantiationRange = SourceRange()); |
7974 | |
7975 | /// Note that we are instantiating as part of template |
7976 | /// argument deduction for a variable template partial |
7977 | /// specialization. |
7978 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7979 | VarTemplatePartialSpecializationDecl *PartialSpec, |
7980 | ArrayRef<TemplateArgument> TemplateArgs, |
7981 | sema::TemplateDeductionInfo &DeductionInfo, |
7982 | SourceRange InstantiationRange = SourceRange()); |
7983 | |
7984 | /// Note that we are instantiating a default argument for a function |
7985 | /// parameter. |
7986 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7987 | ParmVarDecl *Param, |
7988 | ArrayRef<TemplateArgument> TemplateArgs, |
7989 | SourceRange InstantiationRange = SourceRange()); |
7990 | |
7991 | /// Note that we are substituting prior template arguments into a |
7992 | /// non-type parameter. |
7993 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7994 | NamedDecl *Template, |
7995 | NonTypeTemplateParmDecl *Param, |
7996 | ArrayRef<TemplateArgument> TemplateArgs, |
7997 | SourceRange InstantiationRange); |
7998 | |
7999 | /// Note that we are substituting prior template arguments into a |
8000 | /// template template parameter. |
8001 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
8002 | NamedDecl *Template, |
8003 | TemplateTemplateParmDecl *Param, |
8004 | ArrayRef<TemplateArgument> TemplateArgs, |
8005 | SourceRange InstantiationRange); |
8006 | |
8007 | /// Note that we are checking the default template argument |
8008 | /// against the template parameter for a given template-id. |
8009 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
8010 | TemplateDecl *Template, |
8011 | NamedDecl *Param, |
8012 | ArrayRef<TemplateArgument> TemplateArgs, |
8013 | SourceRange InstantiationRange); |
8014 | |
8015 | struct ConstraintsCheck {}; |
8016 | /// \brief Note that we are checking the constraints associated with some |
8017 | /// constrained entity (a concept declaration or a template with associated |
8018 | /// constraints). |
8019 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
8020 | ConstraintsCheck, TemplateDecl *Template, |
8021 | ArrayRef<TemplateArgument> TemplateArgs, |
8022 | SourceRange InstantiationRange); |
8023 | |
8024 | struct ConstraintSubstitution {}; |
8025 | /// \brief Note that we are checking a constraint expression associated |
8026 | /// with a template declaration or as part of the satisfaction check of a |
8027 | /// concept. |
8028 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
8029 | ConstraintSubstitution, TemplateDecl *Template, |
8030 | sema::TemplateDeductionInfo &DeductionInfo, |
8031 | SourceRange InstantiationRange); |
8032 | |
8033 | /// Note that we have finished instantiating this template. |
8034 | void Clear(); |
8035 | |
8036 | ~InstantiatingTemplate() { Clear(); } |
8037 | |
8038 | /// Determines whether we have exceeded the maximum |
8039 | /// recursive template instantiations. |
8040 | bool isInvalid() const { return Invalid; } |
8041 | |
8042 | /// Determine whether we are already instantiating this |
8043 | /// specialization in some surrounding active instantiation. |
8044 | bool isAlreadyInstantiating() const { return AlreadyInstantiating; } |
8045 | |
8046 | private: |
8047 | Sema &SemaRef; |
8048 | bool Invalid; |
8049 | bool AlreadyInstantiating; |
8050 | bool CheckInstantiationDepth(SourceLocation PointOfInstantiation, |
8051 | SourceRange InstantiationRange); |
8052 | |
8053 | InstantiatingTemplate( |
8054 | Sema &SemaRef, CodeSynthesisContext::SynthesisKind Kind, |
8055 | SourceLocation PointOfInstantiation, SourceRange InstantiationRange, |
8056 | Decl *Entity, NamedDecl *Template = nullptr, |
8057 | ArrayRef<TemplateArgument> TemplateArgs = None, |
8058 | sema::TemplateDeductionInfo *DeductionInfo = nullptr); |
8059 | |
8060 | InstantiatingTemplate(const InstantiatingTemplate&) = delete; |
8061 | |
8062 | InstantiatingTemplate& |
8063 | operator=(const InstantiatingTemplate&) = delete; |
8064 | }; |
8065 | |
8066 | void pushCodeSynthesisContext(CodeSynthesisContext Ctx); |
8067 | void popCodeSynthesisContext(); |
8068 | |
8069 | /// Determine whether we are currently performing template instantiation. |
8070 | bool inTemplateInstantiation() const { |
8071 | return CodeSynthesisContexts.size() > NonInstantiationEntries; |
8072 | } |
8073 | |
8074 | void PrintContextStack() { |
8075 | if (!CodeSynthesisContexts.empty() && |
8076 | CodeSynthesisContexts.size() != LastEmittedCodeSynthesisContextDepth) { |
8077 | PrintInstantiationStack(); |
8078 | LastEmittedCodeSynthesisContextDepth = CodeSynthesisContexts.size(); |
8079 | } |
8080 | if (PragmaAttributeCurrentTargetDecl) |
8081 | PrintPragmaAttributeInstantiationPoint(); |
8082 | } |
8083 | void PrintInstantiationStack(); |
8084 | |
8085 | void PrintPragmaAttributeInstantiationPoint(); |
8086 | |
8087 | /// Determines whether we are currently in a context where |
8088 | /// template argument substitution failures are not considered |
8089 | /// errors. |
8090 | /// |
8091 | /// \returns An empty \c Optional if we're not in a SFINAE context. |
8092 | /// Otherwise, contains a pointer that, if non-NULL, contains the nearest |
8093 | /// template-deduction context object, which can be used to capture |
8094 | /// diagnostics that will be suppressed. |
8095 | Optional<sema::TemplateDeductionInfo *> isSFINAEContext() const; |
8096 | |
8097 | /// Determines whether we are currently in a context that |
8098 | /// is not evaluated as per C++ [expr] p5. |
8099 | bool isUnevaluatedContext() const { |
8100 | assert(!ExprEvalContexts.empty() &&((!ExprEvalContexts.empty() && "Must be in an expression evaluation context" ) ? static_cast<void> (0) : __assert_fail ("!ExprEvalContexts.empty() && \"Must be in an expression evaluation context\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8101, __PRETTY_FUNCTION__)) |
8101 | "Must be in an expression evaluation context")((!ExprEvalContexts.empty() && "Must be in an expression evaluation context" ) ? static_cast<void> (0) : __assert_fail ("!ExprEvalContexts.empty() && \"Must be in an expression evaluation context\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8101, __PRETTY_FUNCTION__)); |
8102 | return ExprEvalContexts.back().isUnevaluated(); |
8103 | } |
8104 | |
8105 | /// RAII class used to determine whether SFINAE has |
8106 | /// trapped any errors that occur during template argument |
8107 | /// deduction. |
8108 | class SFINAETrap { |
8109 | Sema &SemaRef; |
8110 | unsigned PrevSFINAEErrors; |
8111 | bool PrevInNonInstantiationSFINAEContext; |
8112 | bool PrevAccessCheckingSFINAE; |
8113 | bool PrevLastDiagnosticIgnored; |
8114 | |
8115 | public: |
8116 | explicit SFINAETrap(Sema &SemaRef, bool AccessCheckingSFINAE = false) |
8117 | : SemaRef(SemaRef), PrevSFINAEErrors(SemaRef.NumSFINAEErrors), |
8118 | PrevInNonInstantiationSFINAEContext( |
8119 | SemaRef.InNonInstantiationSFINAEContext), |
8120 | PrevAccessCheckingSFINAE(SemaRef.AccessCheckingSFINAE), |
8121 | PrevLastDiagnosticIgnored( |
8122 | SemaRef.getDiagnostics().isLastDiagnosticIgnored()) |
8123 | { |
8124 | if (!SemaRef.isSFINAEContext()) |
8125 | SemaRef.InNonInstantiationSFINAEContext = true; |
8126 | SemaRef.AccessCheckingSFINAE = AccessCheckingSFINAE; |
8127 | } |
8128 | |
8129 | ~SFINAETrap() { |
8130 | SemaRef.NumSFINAEErrors = PrevSFINAEErrors; |
8131 | SemaRef.InNonInstantiationSFINAEContext |
8132 | = PrevInNonInstantiationSFINAEContext; |
8133 | SemaRef.AccessCheckingSFINAE = PrevAccessCheckingSFINAE; |
8134 | SemaRef.getDiagnostics().setLastDiagnosticIgnored( |
8135 | PrevLastDiagnosticIgnored); |
8136 | } |
8137 | |
8138 | /// Determine whether any SFINAE errors have been trapped. |
8139 | bool hasErrorOccurred() const { |
8140 | return SemaRef.NumSFINAEErrors > PrevSFINAEErrors; |
8141 | } |
8142 | }; |
8143 | |
8144 | /// RAII class used to indicate that we are performing provisional |
8145 | /// semantic analysis to determine the validity of a construct, so |
8146 | /// typo-correction and diagnostics in the immediate context (not within |
8147 | /// implicitly-instantiated templates) should be suppressed. |
8148 | class TentativeAnalysisScope { |
8149 | Sema &SemaRef; |
8150 | // FIXME: Using a SFINAETrap for this is a hack. |
8151 | SFINAETrap Trap; |
8152 | bool PrevDisableTypoCorrection; |
8153 | public: |
8154 | explicit TentativeAnalysisScope(Sema &SemaRef) |
8155 | : SemaRef(SemaRef), Trap(SemaRef, true), |
8156 | PrevDisableTypoCorrection(SemaRef.DisableTypoCorrection) { |
8157 | SemaRef.DisableTypoCorrection = true; |
8158 | } |
8159 | ~TentativeAnalysisScope() { |
8160 | SemaRef.DisableTypoCorrection = PrevDisableTypoCorrection; |
8161 | } |
8162 | }; |
8163 | |
8164 | /// The current instantiation scope used to store local |
8165 | /// variables. |
8166 | LocalInstantiationScope *CurrentInstantiationScope; |
8167 | |
8168 | /// Tracks whether we are in a context where typo correction is |
8169 | /// disabled. |
8170 | bool DisableTypoCorrection; |
8171 | |
8172 | /// The number of typos corrected by CorrectTypo. |
8173 | unsigned TyposCorrected; |
8174 | |
8175 | typedef llvm::SmallSet<SourceLocation, 2> SrcLocSet; |
8176 | typedef llvm::DenseMap<IdentifierInfo *, SrcLocSet> IdentifierSourceLocations; |
8177 | |
8178 | /// A cache containing identifiers for which typo correction failed and |
8179 | /// their locations, so that repeated attempts to correct an identifier in a |
8180 | /// given location are ignored if typo correction already failed for it. |
8181 | IdentifierSourceLocations TypoCorrectionFailures; |
8182 | |
8183 | /// Worker object for performing CFG-based warnings. |
8184 | sema::AnalysisBasedWarnings AnalysisWarnings; |
8185 | threadSafety::BeforeSet *ThreadSafetyDeclCache; |
8186 | |
8187 | /// An entity for which implicit template instantiation is required. |
8188 | /// |
8189 | /// The source location associated with the declaration is the first place in |
8190 | /// the source code where the declaration was "used". It is not necessarily |
8191 | /// the point of instantiation (which will be either before or after the |
8192 | /// namespace-scope declaration that triggered this implicit instantiation), |
8193 | /// However, it is the location that diagnostics should generally refer to, |
8194 | /// because users will need to know what code triggered the instantiation. |
8195 | typedef std::pair<ValueDecl *, SourceLocation> PendingImplicitInstantiation; |
8196 | |
8197 | /// The queue of implicit template instantiations that are required |
8198 | /// but have not yet been performed. |
8199 | std::deque<PendingImplicitInstantiation> PendingInstantiations; |
8200 | |
8201 | /// Queue of implicit template instantiations that cannot be performed |
8202 | /// eagerly. |
8203 | SmallVector<PendingImplicitInstantiation, 1> LateParsedInstantiations; |
8204 | |
8205 | class GlobalEagerInstantiationScope { |
8206 | public: |
8207 | GlobalEagerInstantiationScope(Sema &S, bool Enabled) |
8208 | : S(S), Enabled(Enabled) { |
8209 | if (!Enabled) return; |
8210 | |
8211 | SavedPendingInstantiations.swap(S.PendingInstantiations); |
8212 | SavedVTableUses.swap(S.VTableUses); |
8213 | } |
8214 | |
8215 | void perform() { |
8216 | if (Enabled) { |
8217 | S.DefineUsedVTables(); |
8218 | S.PerformPendingInstantiations(); |
8219 | } |
8220 | } |
8221 | |
8222 | ~GlobalEagerInstantiationScope() { |
8223 | if (!Enabled) return; |
8224 | |
8225 | // Restore the set of pending vtables. |
8226 | assert(S.VTableUses.empty() &&((S.VTableUses.empty() && "VTableUses should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.VTableUses.empty() && \"VTableUses should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8227, __PRETTY_FUNCTION__)) |
8227 | "VTableUses should be empty before it is discarded.")((S.VTableUses.empty() && "VTableUses should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.VTableUses.empty() && \"VTableUses should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8227, __PRETTY_FUNCTION__)); |
8228 | S.VTableUses.swap(SavedVTableUses); |
8229 | |
8230 | // Restore the set of pending implicit instantiations. |
8231 | assert(S.PendingInstantiations.empty() &&((S.PendingInstantiations.empty() && "PendingInstantiations should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.PendingInstantiations.empty() && \"PendingInstantiations should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8232, __PRETTY_FUNCTION__)) |
8232 | "PendingInstantiations should be empty before it is discarded.")((S.PendingInstantiations.empty() && "PendingInstantiations should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.PendingInstantiations.empty() && \"PendingInstantiations should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8232, __PRETTY_FUNCTION__)); |
8233 | S.PendingInstantiations.swap(SavedPendingInstantiations); |
8234 | } |
8235 | |
8236 | private: |
8237 | Sema &S; |
8238 | SmallVector<VTableUse, 16> SavedVTableUses; |
8239 | std::deque<PendingImplicitInstantiation> SavedPendingInstantiations; |
8240 | bool Enabled; |
8241 | }; |
8242 | |
8243 | /// The queue of implicit template instantiations that are required |
8244 | /// and must be performed within the current local scope. |
8245 | /// |
8246 | /// This queue is only used for member functions of local classes in |
8247 | /// templates, which must be instantiated in the same scope as their |
8248 | /// enclosing function, so that they can reference function-local |
8249 | /// types, static variables, enumerators, etc. |
8250 | std::deque<PendingImplicitInstantiation> PendingLocalImplicitInstantiations; |
8251 | |
8252 | class LocalEagerInstantiationScope { |
8253 | public: |
8254 | LocalEagerInstantiationScope(Sema &S) : S(S) { |
8255 | SavedPendingLocalImplicitInstantiations.swap( |
8256 | S.PendingLocalImplicitInstantiations); |
8257 | } |
8258 | |
8259 | void perform() { S.PerformPendingInstantiations(/*LocalOnly=*/true); } |
8260 | |
8261 | ~LocalEagerInstantiationScope() { |
8262 | assert(S.PendingLocalImplicitInstantiations.empty() &&((S.PendingLocalImplicitInstantiations.empty() && "there shouldn't be any pending local implicit instantiations" ) ? static_cast<void> (0) : __assert_fail ("S.PendingLocalImplicitInstantiations.empty() && \"there shouldn't be any pending local implicit instantiations\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8263, __PRETTY_FUNCTION__)) |
8263 | "there shouldn't be any pending local implicit instantiations")((S.PendingLocalImplicitInstantiations.empty() && "there shouldn't be any pending local implicit instantiations" ) ? static_cast<void> (0) : __assert_fail ("S.PendingLocalImplicitInstantiations.empty() && \"there shouldn't be any pending local implicit instantiations\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8263, __PRETTY_FUNCTION__)); |
8264 | SavedPendingLocalImplicitInstantiations.swap( |
8265 | S.PendingLocalImplicitInstantiations); |
8266 | } |
8267 | |
8268 | private: |
8269 | Sema &S; |
8270 | std::deque<PendingImplicitInstantiation> |
8271 | SavedPendingLocalImplicitInstantiations; |
8272 | }; |
8273 | |
8274 | /// A helper class for building up ExtParameterInfos. |
8275 | class ExtParameterInfoBuilder { |
8276 | SmallVector<FunctionProtoType::ExtParameterInfo, 16> Infos; |
8277 | bool HasInteresting = false; |
8278 | |
8279 | public: |
8280 | /// Set the ExtParameterInfo for the parameter at the given index, |
8281 | /// |
8282 | void set(unsigned index, FunctionProtoType::ExtParameterInfo info) { |
8283 | assert(Infos.size() <= index)((Infos.size() <= index) ? static_cast<void> (0) : __assert_fail ("Infos.size() <= index", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 8283, __PRETTY_FUNCTION__)); |
8284 | Infos.resize(index); |
8285 | Infos.push_back(info); |
8286 | |
8287 | if (!HasInteresting) |
8288 | HasInteresting = (info != FunctionProtoType::ExtParameterInfo()); |
8289 | } |
8290 | |
8291 | /// Return a pointer (suitable for setting in an ExtProtoInfo) to the |
8292 | /// ExtParameterInfo array we've built up. |
8293 | const FunctionProtoType::ExtParameterInfo * |
8294 | getPointerOrNull(unsigned numParams) { |
8295 | if (!HasInteresting) return nullptr; |
8296 | Infos.resize(numParams); |
8297 | return Infos.data(); |
8298 | } |
8299 | }; |
8300 | |
8301 | void PerformPendingInstantiations(bool LocalOnly = false); |
8302 | |
8303 | TypeSourceInfo *SubstType(TypeSourceInfo *T, |
8304 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8305 | SourceLocation Loc, DeclarationName Entity, |
8306 | bool AllowDeducedTST = false); |
8307 | |
8308 | QualType SubstType(QualType T, |
8309 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8310 | SourceLocation Loc, DeclarationName Entity); |
8311 | |
8312 | TypeSourceInfo *SubstType(TypeLoc TL, |
8313 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8314 | SourceLocation Loc, DeclarationName Entity); |
8315 | |
8316 | TypeSourceInfo *SubstFunctionDeclType(TypeSourceInfo *T, |
8317 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8318 | SourceLocation Loc, |
8319 | DeclarationName Entity, |
8320 | CXXRecordDecl *ThisContext, |
8321 | Qualifiers ThisTypeQuals); |
8322 | void SubstExceptionSpec(FunctionDecl *New, const FunctionProtoType *Proto, |
8323 | const MultiLevelTemplateArgumentList &Args); |
8324 | bool SubstExceptionSpec(SourceLocation Loc, |
8325 | FunctionProtoType::ExceptionSpecInfo &ESI, |
8326 | SmallVectorImpl<QualType> &ExceptionStorage, |
8327 | const MultiLevelTemplateArgumentList &Args); |
8328 | ParmVarDecl *SubstParmVarDecl(ParmVarDecl *D, |
8329 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8330 | int indexAdjustment, |
8331 | Optional<unsigned> NumExpansions, |
8332 | bool ExpectParameterPack); |
8333 | bool SubstParmTypes(SourceLocation Loc, ArrayRef<ParmVarDecl *> Params, |
8334 | const FunctionProtoType::ExtParameterInfo *ExtParamInfos, |
8335 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8336 | SmallVectorImpl<QualType> &ParamTypes, |
8337 | SmallVectorImpl<ParmVarDecl *> *OutParams, |
8338 | ExtParameterInfoBuilder &ParamInfos); |
8339 | ExprResult SubstExpr(Expr *E, |
8340 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8341 | |
8342 | /// Substitute the given template arguments into a list of |
8343 | /// expressions, expanding pack expansions if required. |
8344 | /// |
8345 | /// \param Exprs The list of expressions to substitute into. |
8346 | /// |
8347 | /// \param IsCall Whether this is some form of call, in which case |
8348 | /// default arguments will be dropped. |
8349 | /// |
8350 | /// \param TemplateArgs The set of template arguments to substitute. |
8351 | /// |
8352 | /// \param Outputs Will receive all of the substituted arguments. |
8353 | /// |
8354 | /// \returns true if an error occurred, false otherwise. |
8355 | bool SubstExprs(ArrayRef<Expr *> Exprs, bool IsCall, |
8356 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8357 | SmallVectorImpl<Expr *> &Outputs); |
8358 | |
8359 | StmtResult SubstStmt(Stmt *S, |
8360 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8361 | |
8362 | TemplateParameterList * |
8363 | SubstTemplateParams(TemplateParameterList *Params, DeclContext *Owner, |
8364 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8365 | |
8366 | Decl *SubstDecl(Decl *D, DeclContext *Owner, |
8367 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8368 | |
8369 | ExprResult SubstInitializer(Expr *E, |
8370 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8371 | bool CXXDirectInit); |
8372 | |
8373 | bool |
8374 | SubstBaseSpecifiers(CXXRecordDecl *Instantiation, |
8375 | CXXRecordDecl *Pattern, |
8376 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8377 | |
8378 | bool |
8379 | InstantiateClass(SourceLocation PointOfInstantiation, |
8380 | CXXRecordDecl *Instantiation, CXXRecordDecl *Pattern, |
8381 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8382 | TemplateSpecializationKind TSK, |
8383 | bool Complain = true); |
8384 | |
8385 | bool InstantiateEnum(SourceLocation PointOfInstantiation, |
8386 | EnumDecl *Instantiation, EnumDecl *Pattern, |
8387 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8388 | TemplateSpecializationKind TSK); |
8389 | |
8390 | bool InstantiateInClassInitializer( |
8391 | SourceLocation PointOfInstantiation, FieldDecl *Instantiation, |
8392 | FieldDecl *Pattern, const MultiLevelTemplateArgumentList &TemplateArgs); |
8393 | |
8394 | struct LateInstantiatedAttribute { |
8395 | const Attr *TmplAttr; |
8396 | LocalInstantiationScope *Scope; |
8397 | Decl *NewDecl; |
8398 | |
8399 | LateInstantiatedAttribute(const Attr *A, LocalInstantiationScope *S, |
8400 | Decl *D) |
8401 | : TmplAttr(A), Scope(S), NewDecl(D) |
8402 | { } |
8403 | }; |
8404 | typedef SmallVector<LateInstantiatedAttribute, 16> LateInstantiatedAttrVec; |
8405 | |
8406 | void InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, |
8407 | const Decl *Pattern, Decl *Inst, |
8408 | LateInstantiatedAttrVec *LateAttrs = nullptr, |
8409 | LocalInstantiationScope *OuterMostScope = nullptr); |
8410 | |
8411 | void |
8412 | InstantiateAttrsForDecl(const MultiLevelTemplateArgumentList &TemplateArgs, |
8413 | const Decl *Pattern, Decl *Inst, |
8414 | LateInstantiatedAttrVec *LateAttrs = nullptr, |
8415 | LocalInstantiationScope *OuterMostScope = nullptr); |
8416 | |
8417 | bool usesPartialOrExplicitSpecialization( |
8418 | SourceLocation Loc, ClassTemplateSpecializationDecl *ClassTemplateSpec); |
8419 | |
8420 | bool |
8421 | InstantiateClassTemplateSpecialization(SourceLocation PointOfInstantiation, |
8422 | ClassTemplateSpecializationDecl *ClassTemplateSpec, |
8423 | TemplateSpecializationKind TSK, |
8424 | bool Complain = true); |
8425 | |
8426 | void InstantiateClassMembers(SourceLocation PointOfInstantiation, |
8427 | CXXRecordDecl *Instantiation, |
8428 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8429 | TemplateSpecializationKind TSK); |
8430 | |
8431 | void InstantiateClassTemplateSpecializationMembers( |
8432 | SourceLocation PointOfInstantiation, |
8433 | ClassTemplateSpecializationDecl *ClassTemplateSpec, |
8434 | TemplateSpecializationKind TSK); |
8435 | |
8436 | NestedNameSpecifierLoc |
8437 | SubstNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, |
8438 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8439 | |
8440 | DeclarationNameInfo |
8441 | SubstDeclarationNameInfo(const DeclarationNameInfo &NameInfo, |
8442 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8443 | TemplateName |
8444 | SubstTemplateName(NestedNameSpecifierLoc QualifierLoc, TemplateName Name, |
8445 | SourceLocation Loc, |
8446 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8447 | bool Subst(const TemplateArgumentLoc *Args, unsigned NumArgs, |
8448 | TemplateArgumentListInfo &Result, |
8449 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8450 | |
8451 | void InstantiateExceptionSpec(SourceLocation PointOfInstantiation, |
8452 | FunctionDecl *Function); |
8453 | FunctionDecl *InstantiateFunctionDeclaration(FunctionTemplateDecl *FTD, |
8454 | const TemplateArgumentList *Args, |
8455 | SourceLocation Loc); |
8456 | void InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, |
8457 | FunctionDecl *Function, |
8458 | bool Recursive = false, |
8459 | bool DefinitionRequired = false, |
8460 | bool AtEndOfTU = false); |
8461 | VarTemplateSpecializationDecl *BuildVarTemplateInstantiation( |
8462 | VarTemplateDecl *VarTemplate, VarDecl *FromVar, |
8463 | const TemplateArgumentList &TemplateArgList, |
8464 | const TemplateArgumentListInfo &TemplateArgsInfo, |
8465 | SmallVectorImpl<TemplateArgument> &Converted, |
8466 | SourceLocation PointOfInstantiation, void *InsertPos, |
8467 | LateInstantiatedAttrVec *LateAttrs = nullptr, |
8468 | LocalInstantiationScope *StartingScope = nullptr); |
8469 | VarTemplateSpecializationDecl *CompleteVarTemplateSpecializationDecl( |
8470 | VarTemplateSpecializationDecl *VarSpec, VarDecl *PatternDecl, |
8471 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8472 | void |
8473 | BuildVariableInstantiation(VarDecl *NewVar, VarDecl *OldVar, |
8474 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8475 | LateInstantiatedAttrVec *LateAttrs, |
8476 | DeclContext *Owner, |
8477 | LocalInstantiationScope *StartingScope, |
8478 | bool InstantiatingVarTemplate = false, |
8479 | VarTemplateSpecializationDecl *PrevVTSD = nullptr); |
8480 | |
8481 | VarDecl *getVarTemplateSpecialization( |
8482 | VarTemplateDecl *VarTempl, const TemplateArgumentListInfo *TemplateArgs, |
8483 | const DeclarationNameInfo &MemberNameInfo, SourceLocation TemplateKWLoc); |
8484 | |
8485 | void InstantiateVariableInitializer( |
8486 | VarDecl *Var, VarDecl *OldVar, |
8487 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8488 | void InstantiateVariableDefinition(SourceLocation PointOfInstantiation, |
8489 | VarDecl *Var, bool Recursive = false, |
8490 | bool DefinitionRequired = false, |
8491 | bool AtEndOfTU = false); |
8492 | |
8493 | void InstantiateMemInitializers(CXXConstructorDecl *New, |
8494 | const CXXConstructorDecl *Tmpl, |
8495 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8496 | |
8497 | NamedDecl *FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D, |
8498 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8499 | bool FindingInstantiatedContext = false); |
8500 | DeclContext *FindInstantiatedContext(SourceLocation Loc, DeclContext *DC, |
8501 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8502 | |
8503 | // Objective-C declarations. |
8504 | enum ObjCContainerKind { |
8505 | OCK_None = -1, |
8506 | OCK_Interface = 0, |
8507 | OCK_Protocol, |
8508 | OCK_Category, |
8509 | OCK_ClassExtension, |
8510 | OCK_Implementation, |
8511 | OCK_CategoryImplementation |
8512 | }; |
8513 | ObjCContainerKind getObjCContainerKind() const; |
8514 | |
8515 | DeclResult actOnObjCTypeParam(Scope *S, |
8516 | ObjCTypeParamVariance variance, |
8517 | SourceLocation varianceLoc, |
8518 | unsigned index, |
8519 | IdentifierInfo *paramName, |
8520 | SourceLocation paramLoc, |
8521 | SourceLocation colonLoc, |
8522 | ParsedType typeBound); |
8523 | |
8524 | ObjCTypeParamList *actOnObjCTypeParamList(Scope *S, SourceLocation lAngleLoc, |
8525 | ArrayRef<Decl *> typeParams, |
8526 | SourceLocation rAngleLoc); |
8527 | void popObjCTypeParamList(Scope *S, ObjCTypeParamList *typeParamList); |
8528 | |
8529 | Decl *ActOnStartClassInterface( |
8530 | Scope *S, SourceLocation AtInterfaceLoc, IdentifierInfo *ClassName, |
8531 | SourceLocation ClassLoc, ObjCTypeParamList *typeParamList, |
8532 | IdentifierInfo *SuperName, SourceLocation SuperLoc, |
8533 | ArrayRef<ParsedType> SuperTypeArgs, SourceRange SuperTypeArgsRange, |
8534 | Decl *const *ProtoRefs, unsigned NumProtoRefs, |
8535 | const SourceLocation *ProtoLocs, SourceLocation EndProtoLoc, |
8536 | const ParsedAttributesView &AttrList); |
8537 | |
8538 | void ActOnSuperClassOfClassInterface(Scope *S, |
8539 | SourceLocation AtInterfaceLoc, |
8540 | ObjCInterfaceDecl *IDecl, |
8541 | IdentifierInfo *ClassName, |
8542 | SourceLocation ClassLoc, |
8543 | IdentifierInfo *SuperName, |
8544 | SourceLocation SuperLoc, |
8545 | ArrayRef<ParsedType> SuperTypeArgs, |
8546 | SourceRange SuperTypeArgsRange); |
8547 | |
8548 | void ActOnTypedefedProtocols(SmallVectorImpl<Decl *> &ProtocolRefs, |
8549 | SmallVectorImpl<SourceLocation> &ProtocolLocs, |
8550 | IdentifierInfo *SuperName, |
8551 | SourceLocation SuperLoc); |
8552 | |
8553 | Decl *ActOnCompatibilityAlias( |
8554 | SourceLocation AtCompatibilityAliasLoc, |
8555 | IdentifierInfo *AliasName, SourceLocation AliasLocation, |
8556 | IdentifierInfo *ClassName, SourceLocation ClassLocation); |
8557 | |
8558 | bool CheckForwardProtocolDeclarationForCircularDependency( |
8559 | IdentifierInfo *PName, |
8560 | SourceLocation &PLoc, SourceLocation PrevLoc, |
8561 | const ObjCList<ObjCProtocolDecl> &PList); |
8562 | |
8563 | Decl *ActOnStartProtocolInterface( |
8564 | SourceLocation AtProtoInterfaceLoc, IdentifierInfo *ProtocolName, |
8565 | SourceLocation ProtocolLoc, Decl *const *ProtoRefNames, |
8566 | unsigned NumProtoRefs, const SourceLocation *ProtoLocs, |
8567 | SourceLocation EndProtoLoc, const ParsedAttributesView &AttrList); |
8568 | |
8569 | Decl *ActOnStartCategoryInterface( |
8570 | SourceLocation AtInterfaceLoc, IdentifierInfo *ClassName, |
8571 | SourceLocation ClassLoc, ObjCTypeParamList *typeParamList, |
8572 | IdentifierInfo *CategoryName, SourceLocation CategoryLoc, |
8573 | Decl *const *ProtoRefs, unsigned NumProtoRefs, |
8574 | const SourceLocation *ProtoLocs, SourceLocation EndProtoLoc, |
8575 | const ParsedAttributesView &AttrList); |
8576 | |
8577 | Decl *ActOnStartClassImplementation(SourceLocation AtClassImplLoc, |
8578 | IdentifierInfo *ClassName, |
8579 | SourceLocation ClassLoc, |
8580 | IdentifierInfo *SuperClassname, |
8581 | SourceLocation SuperClassLoc, |
8582 | const ParsedAttributesView &AttrList); |
8583 | |
8584 | Decl *ActOnStartCategoryImplementation(SourceLocation AtCatImplLoc, |
8585 | IdentifierInfo *ClassName, |
8586 | SourceLocation ClassLoc, |
8587 | IdentifierInfo *CatName, |
8588 | SourceLocation CatLoc, |
8589 | const ParsedAttributesView &AttrList); |
8590 | |
8591 | DeclGroupPtrTy ActOnFinishObjCImplementation(Decl *ObjCImpDecl, |
8592 | ArrayRef<Decl *> Decls); |
8593 | |
8594 | DeclGroupPtrTy ActOnForwardClassDeclaration(SourceLocation Loc, |
8595 | IdentifierInfo **IdentList, |
8596 | SourceLocation *IdentLocs, |
8597 | ArrayRef<ObjCTypeParamList *> TypeParamLists, |
8598 | unsigned NumElts); |
8599 | |
8600 | DeclGroupPtrTy |
8601 | ActOnForwardProtocolDeclaration(SourceLocation AtProtoclLoc, |
8602 | ArrayRef<IdentifierLocPair> IdentList, |
8603 | const ParsedAttributesView &attrList); |
8604 | |
8605 | void FindProtocolDeclaration(bool WarnOnDeclarations, bool ForObjCContainer, |
8606 | ArrayRef<IdentifierLocPair> ProtocolId, |
8607 | SmallVectorImpl<Decl *> &Protocols); |
8608 | |
8609 | void DiagnoseTypeArgsAndProtocols(IdentifierInfo *ProtocolId, |
8610 | SourceLocation ProtocolLoc, |
8611 | IdentifierInfo *TypeArgId, |
8612 | SourceLocation TypeArgLoc, |
8613 | bool SelectProtocolFirst = false); |
8614 | |
8615 | /// Given a list of identifiers (and their locations), resolve the |
8616 | /// names to either Objective-C protocol qualifiers or type |
8617 | /// arguments, as appropriate. |
8618 | void actOnObjCTypeArgsOrProtocolQualifiers( |
8619 | Scope *S, |
8620 | ParsedType baseType, |
8621 | SourceLocation lAngleLoc, |
8622 | ArrayRef<IdentifierInfo *> identifiers, |
8623 | ArrayRef<SourceLocation> identifierLocs, |
8624 | SourceLocation rAngleLoc, |
8625 | SourceLocation &typeArgsLAngleLoc, |
8626 | SmallVectorImpl<ParsedType> &typeArgs, |
8627 | SourceLocation &typeArgsRAngleLoc, |
8628 | SourceLocation &protocolLAngleLoc, |
8629 | SmallVectorImpl<Decl *> &protocols, |
8630 | SourceLocation &protocolRAngleLoc, |
8631 | bool warnOnIncompleteProtocols); |
8632 | |
8633 | /// Build a an Objective-C protocol-qualified 'id' type where no |
8634 | /// base type was specified. |
8635 | TypeResult actOnObjCProtocolQualifierType( |
8636 | SourceLocation lAngleLoc, |
8637 | ArrayRef<Decl *> protocols, |
8638 | ArrayRef<SourceLocation> protocolLocs, |
8639 | SourceLocation rAngleLoc); |
8640 | |
8641 | /// Build a specialized and/or protocol-qualified Objective-C type. |
8642 | TypeResult actOnObjCTypeArgsAndProtocolQualifiers( |
8643 | Scope *S, |
8644 | SourceLocation Loc, |
8645 | ParsedType BaseType, |
8646 | SourceLocation TypeArgsLAngleLoc, |
8647 | ArrayRef<ParsedType> TypeArgs, |
8648 | SourceLocation TypeArgsRAngleLoc, |
8649 | SourceLocation ProtocolLAngleLoc, |
8650 | ArrayRef<Decl *> Protocols, |
8651 | ArrayRef<SourceLocation> ProtocolLocs, |
8652 | SourceLocation ProtocolRAngleLoc); |
8653 | |
8654 | /// Build an Objective-C type parameter type. |
8655 | QualType BuildObjCTypeParamType(const ObjCTypeParamDecl *Decl, |
8656 | SourceLocation ProtocolLAngleLoc, |
8657 | ArrayRef<ObjCProtocolDecl *> Protocols, |
8658 | ArrayRef<SourceLocation> ProtocolLocs, |
8659 | SourceLocation ProtocolRAngleLoc, |
8660 | bool FailOnError = false); |
8661 | |
8662 | /// Build an Objective-C object pointer type. |
8663 | QualType BuildObjCObjectType(QualType BaseType, |
8664 | SourceLocation Loc, |
8665 | SourceLocation TypeArgsLAngleLoc, |
8666 | ArrayRef<TypeSourceInfo *> TypeArgs, |
8667 | SourceLocation TypeArgsRAngleLoc, |
8668 | SourceLocation ProtocolLAngleLoc, |
8669 | ArrayRef<ObjCProtocolDecl *> Protocols, |
8670 | ArrayRef<SourceLocation> ProtocolLocs, |
8671 | SourceLocation ProtocolRAngleLoc, |
8672 | bool FailOnError = false); |
8673 | |
8674 | /// Ensure attributes are consistent with type. |
8675 | /// \param [in, out] Attributes The attributes to check; they will |
8676 | /// be modified to be consistent with \p PropertyTy. |
8677 | void CheckObjCPropertyAttributes(Decl *PropertyPtrTy, |
8678 | SourceLocation Loc, |
8679 | unsigned &Attributes, |
8680 | bool propertyInPrimaryClass); |
8681 | |
8682 | /// Process the specified property declaration and create decls for the |
8683 | /// setters and getters as needed. |
8684 | /// \param property The property declaration being processed |
8685 | void ProcessPropertyDecl(ObjCPropertyDecl *property); |
8686 | |
8687 | |
8688 | void DiagnosePropertyMismatch(ObjCPropertyDecl *Property, |
8689 | ObjCPropertyDecl *SuperProperty, |
8690 | const IdentifierInfo *Name, |
8691 | bool OverridingProtocolProperty); |
8692 | |
8693 | void DiagnoseClassExtensionDupMethods(ObjCCategoryDecl *CAT, |
8694 | ObjCInterfaceDecl *ID); |
8695 | |
8696 | Decl *ActOnAtEnd(Scope *S, SourceRange AtEnd, |
8697 | ArrayRef<Decl *> allMethods = None, |
8698 | ArrayRef<DeclGroupPtrTy> allTUVars = None); |
8699 | |
8700 | Decl *ActOnProperty(Scope *S, SourceLocation AtLoc, |
8701 | SourceLocation LParenLoc, |
8702 | FieldDeclarator &FD, ObjCDeclSpec &ODS, |
8703 | Selector GetterSel, Selector SetterSel, |
8704 | tok::ObjCKeywordKind MethodImplKind, |
8705 | DeclContext *lexicalDC = nullptr); |
8706 | |
8707 | Decl *ActOnPropertyImplDecl(Scope *S, |
8708 | SourceLocation AtLoc, |
8709 | SourceLocation PropertyLoc, |
8710 | bool ImplKind, |
8711 | IdentifierInfo *PropertyId, |
8712 | IdentifierInfo *PropertyIvar, |
8713 | SourceLocation PropertyIvarLoc, |
8714 | ObjCPropertyQueryKind QueryKind); |
8715 | |
8716 | enum ObjCSpecialMethodKind { |
8717 | OSMK_None, |
8718 | OSMK_Alloc, |
8719 | OSMK_New, |
8720 | OSMK_Copy, |
8721 | OSMK_RetainingInit, |
8722 | OSMK_NonRetainingInit |
8723 | }; |
8724 | |
8725 | struct ObjCArgInfo { |
8726 | IdentifierInfo *Name; |
8727 | SourceLocation NameLoc; |
8728 | // The Type is null if no type was specified, and the DeclSpec is invalid |
8729 | // in this case. |
8730 | ParsedType Type; |
8731 | ObjCDeclSpec DeclSpec; |
8732 | |
8733 | /// ArgAttrs - Attribute list for this argument. |
8734 | ParsedAttributesView ArgAttrs; |
8735 | }; |
8736 | |
8737 | Decl *ActOnMethodDeclaration( |
8738 | Scope *S, |
8739 | SourceLocation BeginLoc, // location of the + or -. |
8740 | SourceLocation EndLoc, // location of the ; or {. |
8741 | tok::TokenKind MethodType, ObjCDeclSpec &ReturnQT, ParsedType ReturnType, |
8742 | ArrayRef<SourceLocation> SelectorLocs, Selector Sel, |
8743 | // optional arguments. The number of types/arguments is obtained |
8744 | // from the Sel.getNumArgs(). |
8745 | ObjCArgInfo *ArgInfo, DeclaratorChunk::ParamInfo *CParamInfo, |
8746 | unsigned CNumArgs, // c-style args |
8747 | const ParsedAttributesView &AttrList, tok::ObjCKeywordKind MethodImplKind, |
8748 | bool isVariadic, bool MethodDefinition); |
8749 | |
8750 | ObjCMethodDecl *LookupMethodInQualifiedType(Selector Sel, |
8751 | const ObjCObjectPointerType *OPT, |
8752 | bool IsInstance); |
8753 | ObjCMethodDecl *LookupMethodInObjectType(Selector Sel, QualType Ty, |
8754 | bool IsInstance); |
8755 | |
8756 | bool CheckARCMethodDecl(ObjCMethodDecl *method); |
8757 | bool inferObjCARCLifetime(ValueDecl *decl); |
8758 | |
8759 | ExprResult |
8760 | HandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, |
8761 | Expr *BaseExpr, |
8762 | SourceLocation OpLoc, |
8763 | DeclarationName MemberName, |
8764 | SourceLocation MemberLoc, |
8765 | SourceLocation SuperLoc, QualType SuperType, |
8766 | bool Super); |
8767 | |
8768 | ExprResult |
8769 | ActOnClassPropertyRefExpr(IdentifierInfo &receiverName, |
8770 | IdentifierInfo &propertyName, |
8771 | SourceLocation receiverNameLoc, |
8772 | SourceLocation propertyNameLoc); |
8773 | |
8774 | ObjCMethodDecl *tryCaptureObjCSelf(SourceLocation Loc); |
8775 | |
8776 | /// Describes the kind of message expression indicated by a message |
8777 | /// send that starts with an identifier. |
8778 | enum ObjCMessageKind { |
8779 | /// The message is sent to 'super'. |
8780 | ObjCSuperMessage, |
8781 | /// The message is an instance message. |
8782 | ObjCInstanceMessage, |
8783 | /// The message is a class message, and the identifier is a type |
8784 | /// name. |
8785 | ObjCClassMessage |
8786 | }; |
8787 | |
8788 | ObjCMessageKind getObjCMessageKind(Scope *S, |
8789 | IdentifierInfo *Name, |
8790 | SourceLocation NameLoc, |
8791 | bool IsSuper, |
8792 | bool HasTrailingDot, |
8793 | ParsedType &ReceiverType); |
8794 | |
8795 | ExprResult ActOnSuperMessage(Scope *S, SourceLocation SuperLoc, |
8796 | Selector Sel, |
8797 | SourceLocation LBracLoc, |
8798 | ArrayRef<SourceLocation> SelectorLocs, |
8799 | SourceLocation RBracLoc, |
8800 | MultiExprArg Args); |
8801 | |
8802 | ExprResult BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, |
8803 | QualType ReceiverType, |
8804 | SourceLocation SuperLoc, |
8805 | Selector Sel, |
8806 | ObjCMethodDecl *Method, |
8807 | SourceLocation LBracLoc, |
8808 | ArrayRef<SourceLocation> SelectorLocs, |
8809 | SourceLocation RBracLoc, |
8810 | MultiExprArg Args, |
8811 | bool isImplicit = false); |
8812 | |
8813 | ExprResult BuildClassMessageImplicit(QualType ReceiverType, |
8814 | bool isSuperReceiver, |
8815 | SourceLocation Loc, |
8816 | Selector Sel, |
8817 | ObjCMethodDecl *Method, |
8818 | MultiExprArg Args); |
8819 | |
8820 | ExprResult ActOnClassMessage(Scope *S, |
8821 | ParsedType Receiver, |
8822 | Selector Sel, |
8823 | SourceLocation LBracLoc, |
8824 | ArrayRef<SourceLocation> SelectorLocs, |
8825 | SourceLocation RBracLoc, |
8826 | MultiExprArg Args); |
8827 | |
8828 | ExprResult BuildInstanceMessage(Expr *Receiver, |
8829 | QualType ReceiverType, |
8830 | SourceLocation SuperLoc, |
8831 | Selector Sel, |
8832 | ObjCMethodDecl *Method, |
8833 | SourceLocation LBracLoc, |
8834 | ArrayRef<SourceLocation> SelectorLocs, |
8835 | SourceLocation RBracLoc, |
8836 | MultiExprArg Args, |
8837 | bool isImplicit = false); |
8838 | |
8839 | ExprResult BuildInstanceMessageImplicit(Expr *Receiver, |
8840 | QualType ReceiverType, |
8841 | SourceLocation Loc, |
8842 | Selector Sel, |
8843 | ObjCMethodDecl *Method, |
8844 | MultiExprArg Args); |
8845 | |
8846 | ExprResult ActOnInstanceMessage(Scope *S, |
8847 | Expr *Receiver, |
8848 | Selector Sel, |
8849 | SourceLocation LBracLoc, |
8850 | ArrayRef<SourceLocation> SelectorLocs, |
8851 | SourceLocation RBracLoc, |
8852 | MultiExprArg Args); |
8853 | |
8854 | ExprResult BuildObjCBridgedCast(SourceLocation LParenLoc, |
8855 | ObjCBridgeCastKind Kind, |
8856 | SourceLocation BridgeKeywordLoc, |
8857 | TypeSourceInfo *TSInfo, |
8858 | Expr *SubExpr); |
8859 | |
8860 | ExprResult ActOnObjCBridgedCast(Scope *S, |
8861 | SourceLocation LParenLoc, |
8862 | ObjCBridgeCastKind Kind, |
8863 | SourceLocation BridgeKeywordLoc, |
8864 | ParsedType Type, |
8865 | SourceLocation RParenLoc, |
8866 | Expr *SubExpr); |
8867 | |
8868 | void CheckTollFreeBridgeCast(QualType castType, Expr *castExpr); |
8869 | |
8870 | void CheckObjCBridgeRelatedCast(QualType castType, Expr *castExpr); |
8871 | |
8872 | bool CheckTollFreeBridgeStaticCast(QualType castType, Expr *castExpr, |
8873 | CastKind &Kind); |
8874 | |
8875 | bool checkObjCBridgeRelatedComponents(SourceLocation Loc, |
8876 | QualType DestType, QualType SrcType, |
8877 | ObjCInterfaceDecl *&RelatedClass, |
8878 | ObjCMethodDecl *&ClassMethod, |
8879 | ObjCMethodDecl *&InstanceMethod, |
8880 | TypedefNameDecl *&TDNDecl, |
8881 | bool CfToNs, bool Diagnose = true); |
8882 | |
8883 | bool CheckObjCBridgeRelatedConversions(SourceLocation Loc, |
8884 | QualType DestType, QualType SrcType, |
8885 | Expr *&SrcExpr, bool Diagnose = true); |
8886 | |
8887 | bool ConversionToObjCStringLiteralCheck(QualType DstType, Expr *&SrcExpr, |
8888 | bool Diagnose = true); |
8889 | |
8890 | bool checkInitMethod(ObjCMethodDecl *method, QualType receiverTypeIfCall); |
8891 | |
8892 | /// Check whether the given new method is a valid override of the |
8893 | /// given overridden method, and set any properties that should be inherited. |
8894 | void CheckObjCMethodOverride(ObjCMethodDecl *NewMethod, |
8895 | const ObjCMethodDecl *Overridden); |
8896 | |
8897 | /// Describes the compatibility of a result type with its method. |
8898 | enum ResultTypeCompatibilityKind { |
8899 | RTC_Compatible, |
8900 | RTC_Incompatible, |
8901 | RTC_Unknown |
8902 | }; |
8903 | |
8904 | void CheckObjCMethodOverrides(ObjCMethodDecl *ObjCMethod, |
8905 | ObjCInterfaceDecl *CurrentClass, |
8906 | ResultTypeCompatibilityKind RTC); |
8907 | |
8908 | enum PragmaOptionsAlignKind { |
8909 | POAK_Native, // #pragma options align=native |
8910 | POAK_Natural, // #pragma options align=natural |
8911 | POAK_Packed, // #pragma options align=packed |
8912 | POAK_Power, // #pragma options align=power |
8913 | POAK_Mac68k, // #pragma options align=mac68k |
8914 | POAK_Reset // #pragma options align=reset |
8915 | }; |
8916 | |
8917 | /// ActOnPragmaClangSection - Called on well formed \#pragma clang section |
8918 | void ActOnPragmaClangSection(SourceLocation PragmaLoc, |
8919 | PragmaClangSectionAction Action, |
8920 | PragmaClangSectionKind SecKind, StringRef SecName); |
8921 | |
8922 | /// ActOnPragmaOptionsAlign - Called on well formed \#pragma options align. |
8923 | void ActOnPragmaOptionsAlign(PragmaOptionsAlignKind Kind, |
8924 | SourceLocation PragmaLoc); |
8925 | |
8926 | /// ActOnPragmaPack - Called on well formed \#pragma pack(...). |
8927 | void ActOnPragmaPack(SourceLocation PragmaLoc, PragmaMsStackAction Action, |
8928 | StringRef SlotLabel, Expr *Alignment); |
8929 | |
8930 | enum class PragmaPackDiagnoseKind { |
8931 | NonDefaultStateAtInclude, |
8932 | ChangedStateAtExit |
8933 | }; |
8934 | |
8935 | void DiagnoseNonDefaultPragmaPack(PragmaPackDiagnoseKind Kind, |
8936 | SourceLocation IncludeLoc); |
8937 | void DiagnoseUnterminatedPragmaPack(); |
8938 | |
8939 | /// ActOnPragmaMSStruct - Called on well formed \#pragma ms_struct [on|off]. |
8940 | void ActOnPragmaMSStruct(PragmaMSStructKind Kind); |
8941 | |
8942 | /// ActOnPragmaMSComment - Called on well formed |
8943 | /// \#pragma comment(kind, "arg"). |
8944 | void ActOnPragmaMSComment(SourceLocation CommentLoc, PragmaMSCommentKind Kind, |
8945 | StringRef Arg); |
8946 | |
8947 | /// ActOnPragmaMSPointersToMembers - called on well formed \#pragma |
8948 | /// pointers_to_members(representation method[, general purpose |
8949 | /// representation]). |
8950 | void ActOnPragmaMSPointersToMembers( |
8951 | LangOptions::PragmaMSPointersToMembersKind Kind, |
8952 | SourceLocation PragmaLoc); |
8953 | |
8954 | /// Called on well formed \#pragma vtordisp(). |
8955 | void ActOnPragmaMSVtorDisp(PragmaMsStackAction Action, |
8956 | SourceLocation PragmaLoc, |
8957 | MSVtorDispAttr::Mode Value); |
8958 | |
8959 | enum PragmaSectionKind { |
8960 | PSK_DataSeg, |
8961 | PSK_BSSSeg, |
8962 | PSK_ConstSeg, |
8963 | PSK_CodeSeg, |
8964 | }; |
8965 | |
8966 | bool UnifySection(StringRef SectionName, |
8967 | int SectionFlags, |
8968 | DeclaratorDecl *TheDecl); |
8969 | bool UnifySection(StringRef SectionName, |
8970 | int SectionFlags, |
8971 | SourceLocation PragmaSectionLocation); |
8972 | |
8973 | /// Called on well formed \#pragma bss_seg/data_seg/const_seg/code_seg. |
8974 | void ActOnPragmaMSSeg(SourceLocation PragmaLocation, |
8975 | PragmaMsStackAction Action, |
8976 | llvm::StringRef StackSlotLabel, |
8977 | StringLiteral *SegmentName, |
8978 | llvm::StringRef PragmaName); |
8979 | |
8980 | /// Called on well formed \#pragma section(). |
8981 | void ActOnPragmaMSSection(SourceLocation PragmaLocation, |
8982 | int SectionFlags, StringLiteral *SegmentName); |
8983 | |
8984 | /// Called on well-formed \#pragma init_seg(). |
8985 | void ActOnPragmaMSInitSeg(SourceLocation PragmaLocation, |
8986 | StringLiteral *SegmentName); |
8987 | |
8988 | /// Called on #pragma clang __debug dump II |
8989 | void ActOnPragmaDump(Scope *S, SourceLocation Loc, IdentifierInfo *II); |
8990 | |
8991 | /// ActOnPragmaDetectMismatch - Call on well-formed \#pragma detect_mismatch |
8992 | void ActOnPragmaDetectMismatch(SourceLocation Loc, StringRef Name, |
8993 | StringRef Value); |
8994 | |
8995 | /// ActOnPragmaUnused - Called on well-formed '\#pragma unused'. |
8996 | void ActOnPragmaUnused(const Token &Identifier, |
8997 | Scope *curScope, |
8998 | SourceLocation PragmaLoc); |
8999 | |
9000 | /// ActOnPragmaVisibility - Called on well formed \#pragma GCC visibility... . |
9001 | void ActOnPragmaVisibility(const IdentifierInfo* VisType, |
9002 | SourceLocation PragmaLoc); |
9003 | |
9004 | NamedDecl *DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II, |
9005 | SourceLocation Loc); |
9006 | void DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W); |
9007 | |
9008 | /// ActOnPragmaWeakID - Called on well formed \#pragma weak ident. |
9009 | void ActOnPragmaWeakID(IdentifierInfo* WeakName, |
9010 | SourceLocation PragmaLoc, |
9011 | SourceLocation WeakNameLoc); |
9012 | |
9013 | /// ActOnPragmaRedefineExtname - Called on well formed |
9014 | /// \#pragma redefine_extname oldname newname. |
9015 | void ActOnPragmaRedefineExtname(IdentifierInfo* WeakName, |
9016 | IdentifierInfo* AliasName, |
9017 | SourceLocation PragmaLoc, |
9018 | SourceLocation WeakNameLoc, |
9019 | SourceLocation AliasNameLoc); |
9020 | |
9021 | /// ActOnPragmaWeakAlias - Called on well formed \#pragma weak ident = ident. |
9022 | void ActOnPragmaWeakAlias(IdentifierInfo* WeakName, |
9023 | IdentifierInfo* AliasName, |
9024 | SourceLocation PragmaLoc, |
9025 | SourceLocation WeakNameLoc, |
9026 | SourceLocation AliasNameLoc); |
9027 | |
9028 | /// ActOnPragmaFPContract - Called on well formed |
9029 | /// \#pragma {STDC,OPENCL} FP_CONTRACT and |
9030 | /// \#pragma clang fp contract |
9031 | void ActOnPragmaFPContract(LangOptions::FPContractModeKind FPC); |
9032 | |
9033 | /// ActOnPragmaFenvAccess - Called on well formed |
9034 | /// \#pragma STDC FENV_ACCESS |
9035 | void ActOnPragmaFEnvAccess(LangOptions::FEnvAccessModeKind FPC); |
9036 | |
9037 | /// AddAlignmentAttributesForRecord - Adds any needed alignment attributes to |
9038 | /// a the record decl, to handle '\#pragma pack' and '\#pragma options align'. |
9039 | void AddAlignmentAttributesForRecord(RecordDecl *RD); |
9040 | |
9041 | /// AddMsStructLayoutForRecord - Adds ms_struct layout attribute to record. |
9042 | void AddMsStructLayoutForRecord(RecordDecl *RD); |
9043 | |
9044 | /// FreePackedContext - Deallocate and null out PackContext. |
9045 | void FreePackedContext(); |
9046 | |
9047 | /// PushNamespaceVisibilityAttr - Note that we've entered a |
9048 | /// namespace with a visibility attribute. |
9049 | void PushNamespaceVisibilityAttr(const VisibilityAttr *Attr, |
9050 | SourceLocation Loc); |
9051 | |
9052 | /// AddPushedVisibilityAttribute - If '\#pragma GCC visibility' was used, |
9053 | /// add an appropriate visibility attribute. |
9054 | void AddPushedVisibilityAttribute(Decl *RD); |
9055 | |
9056 | /// PopPragmaVisibility - Pop the top element of the visibility stack; used |
9057 | /// for '\#pragma GCC visibility' and visibility attributes on namespaces. |
9058 | void PopPragmaVisibility(bool IsNamespaceEnd, SourceLocation EndLoc); |
9059 | |
9060 | /// FreeVisContext - Deallocate and null out VisContext. |
9061 | void FreeVisContext(); |
9062 | |
9063 | /// AddCFAuditedAttribute - Check whether we're currently within |
9064 | /// '\#pragma clang arc_cf_code_audited' and, if so, consider adding |
9065 | /// the appropriate attribute. |
9066 | void AddCFAuditedAttribute(Decl *D); |
9067 | |
9068 | void ActOnPragmaAttributeAttribute(ParsedAttr &Attribute, |
9069 | SourceLocation PragmaLoc, |
9070 | attr::ParsedSubjectMatchRuleSet Rules); |
9071 | void ActOnPragmaAttributeEmptyPush(SourceLocation PragmaLoc, |
9072 | const IdentifierInfo *Namespace); |
9073 | |
9074 | /// Called on well-formed '\#pragma clang attribute pop'. |
9075 | void ActOnPragmaAttributePop(SourceLocation PragmaLoc, |
9076 | const IdentifierInfo *Namespace); |
9077 | |
9078 | /// Adds the attributes that have been specified using the |
9079 | /// '\#pragma clang attribute push' directives to the given declaration. |
9080 | void AddPragmaAttributes(Scope *S, Decl *D); |
9081 | |
9082 | void DiagnoseUnterminatedPragmaAttribute(); |
9083 | |
9084 | /// Called on well formed \#pragma clang optimize. |
9085 | void ActOnPragmaOptimize(bool On, SourceLocation PragmaLoc); |
9086 | |
9087 | /// Get the location for the currently active "\#pragma clang optimize |
9088 | /// off". If this location is invalid, then the state of the pragma is "on". |
9089 | SourceLocation getOptimizeOffPragmaLocation() const { |
9090 | return OptimizeOffPragmaLocation; |
9091 | } |
9092 | |
9093 | /// Only called on function definitions; if there is a pragma in scope |
9094 | /// with the effect of a range-based optnone, consider marking the function |
9095 | /// with attribute optnone. |
9096 | void AddRangeBasedOptnone(FunctionDecl *FD); |
9097 | |
9098 | /// Adds the 'optnone' attribute to the function declaration if there |
9099 | /// are no conflicts; Loc represents the location causing the 'optnone' |
9100 | /// attribute to be added (usually because of a pragma). |
9101 | void AddOptnoneAttributeIfNoConflicts(FunctionDecl *FD, SourceLocation Loc); |
9102 | |
9103 | /// AddAlignedAttr - Adds an aligned attribute to a particular declaration. |
9104 | void AddAlignedAttr(Decl *D, const AttributeCommonInfo &CI, Expr *E, |
9105 | bool IsPackExpansion); |
9106 | void AddAlignedAttr(Decl *D, const AttributeCommonInfo &CI, TypeSourceInfo *T, |
9107 | bool IsPackExpansion); |
9108 | |
9109 | /// AddAssumeAlignedAttr - Adds an assume_aligned attribute to a particular |
9110 | /// declaration. |
9111 | void AddAssumeAlignedAttr(Decl *D, const AttributeCommonInfo &CI, Expr *E, |
9112 | Expr *OE); |
9113 | |
9114 | /// AddAllocAlignAttr - Adds an alloc_align attribute to a particular |
9115 | /// declaration. |
9116 | void AddAllocAlignAttr(Decl *D, const AttributeCommonInfo &CI, |
9117 | Expr *ParamExpr); |
9118 | |
9119 | /// AddAlignValueAttr - Adds an align_value attribute to a particular |
9120 | /// declaration. |
9121 | void AddAlignValueAttr(Decl *D, const AttributeCommonInfo &CI, Expr *E); |
9122 | |
9123 | /// AddLaunchBoundsAttr - Adds a launch_bounds attribute to a particular |
9124 | /// declaration. |
9125 | void AddLaunchBoundsAttr(Decl *D, const AttributeCommonInfo &CI, |
9126 | Expr *MaxThreads, Expr *MinBlocks); |
9127 | |
9128 | /// AddModeAttr - Adds a mode attribute to a particular declaration. |
9129 | void AddModeAttr(Decl *D, const AttributeCommonInfo &CI, IdentifierInfo *Name, |
9130 | bool InInstantiation = false); |
9131 | |
9132 | void AddParameterABIAttr(Decl *D, const AttributeCommonInfo &CI, |
9133 | ParameterABI ABI); |
9134 | |
9135 | enum class RetainOwnershipKind {NS, CF, OS}; |
9136 | void AddXConsumedAttr(Decl *D, const AttributeCommonInfo &CI, |
9137 | RetainOwnershipKind K, bool IsTemplateInstantiation); |
9138 | |
9139 | /// addAMDGPUFlatWorkGroupSizeAttr - Adds an amdgpu_flat_work_group_size |
9140 | /// attribute to a particular declaration. |
9141 | void addAMDGPUFlatWorkGroupSizeAttr(Decl *D, const AttributeCommonInfo &CI, |
9142 | Expr *Min, Expr *Max); |
9143 | |
9144 | /// addAMDGPUWavePersEUAttr - Adds an amdgpu_waves_per_eu attribute to a |
9145 | /// particular declaration. |
9146 | void addAMDGPUWavesPerEUAttr(Decl *D, const AttributeCommonInfo &CI, |
9147 | Expr *Min, Expr *Max); |
9148 | |
9149 | bool checkNSReturnsRetainedReturnType(SourceLocation loc, QualType type); |
9150 | |
9151 | //===--------------------------------------------------------------------===// |
9152 | // C++ Coroutines TS |
9153 | // |
9154 | bool ActOnCoroutineBodyStart(Scope *S, SourceLocation KwLoc, |
9155 | StringRef Keyword); |
9156 | ExprResult ActOnCoawaitExpr(Scope *S, SourceLocation KwLoc, Expr *E); |
9157 | ExprResult ActOnCoyieldExpr(Scope *S, SourceLocation KwLoc, Expr *E); |
9158 | StmtResult ActOnCoreturnStmt(Scope *S, SourceLocation KwLoc, Expr *E); |
9159 | |
9160 | ExprResult BuildResolvedCoawaitExpr(SourceLocation KwLoc, Expr *E, |
9161 | bool IsImplicit = false); |
9162 | ExprResult BuildUnresolvedCoawaitExpr(SourceLocation KwLoc, Expr *E, |
9163 | UnresolvedLookupExpr* Lookup); |
9164 | ExprResult BuildCoyieldExpr(SourceLocation KwLoc, Expr *E); |
9165 | StmtResult BuildCoreturnStmt(SourceLocation KwLoc, Expr *E, |
9166 | bool IsImplicit = false); |
9167 | StmtResult BuildCoroutineBodyStmt(CoroutineBodyStmt::CtorArgs); |
9168 | bool buildCoroutineParameterMoves(SourceLocation Loc); |
9169 | VarDecl *buildCoroutinePromise(SourceLocation Loc); |
9170 | void CheckCompletedCoroutineBody(FunctionDecl *FD, Stmt *&Body); |
9171 | ClassTemplateDecl *lookupCoroutineTraits(SourceLocation KwLoc, |
9172 | SourceLocation FuncLoc); |
9173 | |
9174 | //===--------------------------------------------------------------------===// |
9175 | // OpenCL extensions. |
9176 | // |
9177 | private: |
9178 | std::string CurrOpenCLExtension; |
9179 | /// Extensions required by an OpenCL type. |
9180 | llvm::DenseMap<const Type*, std::set<std::string>> OpenCLTypeExtMap; |
9181 | /// Extensions required by an OpenCL declaration. |
9182 | llvm::DenseMap<const Decl*, std::set<std::string>> OpenCLDeclExtMap; |
9183 | public: |
9184 | llvm::StringRef getCurrentOpenCLExtension() const { |
9185 | return CurrOpenCLExtension; |
9186 | } |
9187 | |
9188 | /// Check if a function declaration \p FD associates with any |
9189 | /// extensions present in OpenCLDeclExtMap and if so return the |
9190 | /// extension(s) name(s). |
9191 | std::string getOpenCLExtensionsFromDeclExtMap(FunctionDecl *FD); |
9192 | |
9193 | /// Check if a function type \p FT associates with any |
9194 | /// extensions present in OpenCLTypeExtMap and if so return the |
9195 | /// extension(s) name(s). |
9196 | std::string getOpenCLExtensionsFromTypeExtMap(FunctionType *FT); |
9197 | |
9198 | /// Find an extension in an appropriate extension map and return its name |
9199 | template<typename T, typename MapT> |
9200 | std::string getOpenCLExtensionsFromExtMap(T* FT, MapT &Map); |
9201 | |
9202 | void setCurrentOpenCLExtension(llvm::StringRef Ext) { |
9203 | CurrOpenCLExtension = Ext; |
9204 | } |
9205 | |
9206 | /// Set OpenCL extensions for a type which can only be used when these |
9207 | /// OpenCL extensions are enabled. If \p Exts is empty, do nothing. |
9208 | /// \param Exts A space separated list of OpenCL extensions. |
9209 | void setOpenCLExtensionForType(QualType T, llvm::StringRef Exts); |
9210 | |
9211 | /// Set OpenCL extensions for a declaration which can only be |
9212 | /// used when these OpenCL extensions are enabled. If \p Exts is empty, do |
9213 | /// nothing. |
9214 | /// \param Exts A space separated list of OpenCL extensions. |
9215 | void setOpenCLExtensionForDecl(Decl *FD, llvm::StringRef Exts); |
9216 | |
9217 | /// Set current OpenCL extensions for a type which can only be used |
9218 | /// when these OpenCL extensions are enabled. If current OpenCL extension is |
9219 | /// empty, do nothing. |
9220 | void setCurrentOpenCLExtensionForType(QualType T); |
9221 | |
9222 | /// Set current OpenCL extensions for a declaration which |
9223 | /// can only be used when these OpenCL extensions are enabled. If current |
9224 | /// OpenCL extension is empty, do nothing. |
9225 | void setCurrentOpenCLExtensionForDecl(Decl *FD); |
9226 | |
9227 | bool isOpenCLDisabledDecl(Decl *FD); |
9228 | |
9229 | /// Check if type \p T corresponding to declaration specifier \p DS |
9230 | /// is disabled due to required OpenCL extensions being disabled. If so, |
9231 | /// emit diagnostics. |
9232 | /// \return true if type is disabled. |
9233 | bool checkOpenCLDisabledTypeDeclSpec(const DeclSpec &DS, QualType T); |
9234 | |
9235 | /// Check if declaration \p D used by expression \p E |
9236 | /// is disabled due to required OpenCL extensions being disabled. If so, |
9237 | /// emit diagnostics. |
9238 | /// \return true if type is disabled. |
9239 | bool checkOpenCLDisabledDecl(const NamedDecl &D, const Expr &E); |
9240 | |
9241 | //===--------------------------------------------------------------------===// |
9242 | // OpenMP directives and clauses. |
9243 | // |
9244 | private: |
9245 | void *VarDataSharingAttributesStack; |
9246 | /// Number of nested '#pragma omp declare target' directives. |
9247 | unsigned DeclareTargetNestingLevel = 0; |
9248 | /// Initialization of data-sharing attributes stack. |
9249 | void InitDataSharingAttributesStack(); |
9250 | void DestroyDataSharingAttributesStack(); |
9251 | ExprResult |
9252 | VerifyPositiveIntegerConstantInClause(Expr *Op, OpenMPClauseKind CKind, |
9253 | bool StrictlyPositive = true); |
9254 | /// Returns OpenMP nesting level for current directive. |
9255 | unsigned getOpenMPNestingLevel() const; |
9256 | |
9257 | /// Adjusts the function scopes index for the target-based regions. |
9258 | void adjustOpenMPTargetScopeIndex(unsigned &FunctionScopesIndex, |
9259 | unsigned Level) const; |
9260 | |
9261 | /// Returns the number of scopes associated with the construct on the given |
9262 | /// OpenMP level. |
9263 | int getNumberOfConstructScopes(unsigned Level) const; |
9264 | |
9265 | /// Push new OpenMP function region for non-capturing function. |
9266 | void pushOpenMPFunctionRegion(); |
9267 | |
9268 | /// Pop OpenMP function region for non-capturing function. |
9269 | void popOpenMPFunctionRegion(const sema::FunctionScopeInfo *OldFSI); |
9270 | |
9271 | /// Check whether we're allowed to call Callee from the current function. |
9272 | void checkOpenMPDeviceFunction(SourceLocation Loc, FunctionDecl *Callee, |
9273 | bool CheckForDelayedContext = true); |
9274 | |
9275 | /// Check whether we're allowed to call Callee from the current function. |
9276 | void checkOpenMPHostFunction(SourceLocation Loc, FunctionDecl *Callee, |
9277 | bool CheckCaller = true); |
9278 | |
9279 | /// Check if the expression is allowed to be used in expressions for the |
9280 | /// OpenMP devices. |
9281 | void checkOpenMPDeviceExpr(const Expr *E); |
9282 | |
9283 | /// Finishes analysis of the deferred functions calls that may be declared as |
9284 | /// host/nohost during device/host compilation. |
9285 | void finalizeOpenMPDelayedAnalysis(); |
9286 | |
9287 | /// Checks if a type or a declaration is disabled due to the owning extension |
9288 | /// being disabled, and emits diagnostic messages if it is disabled. |
9289 | /// \param D type or declaration to be checked. |
9290 | /// \param DiagLoc source location for the diagnostic message. |
9291 | /// \param DiagInfo information to be emitted for the diagnostic message. |
9292 | /// \param SrcRange source range of the declaration. |
9293 | /// \param Map maps type or declaration to the extensions. |
9294 | /// \param Selector selects diagnostic message: 0 for type and 1 for |
9295 | /// declaration. |
9296 | /// \return true if the type or declaration is disabled. |
9297 | template <typename T, typename DiagLocT, typename DiagInfoT, typename MapT> |
9298 | bool checkOpenCLDisabledTypeOrDecl(T D, DiagLocT DiagLoc, DiagInfoT DiagInfo, |
9299 | MapT &Map, unsigned Selector = 0, |
9300 | SourceRange SrcRange = SourceRange()); |
9301 | |
9302 | /// Marks all the functions that might be required for the currently active |
9303 | /// OpenMP context. |
9304 | void markOpenMPDeclareVariantFuncsReferenced(SourceLocation Loc, |
9305 | FunctionDecl *Func, |
9306 | bool MightBeOdrUse); |
9307 | |
9308 | public: |
9309 | /// Struct to store the context selectors info for declare variant directive. |
9310 | using OMPCtxStringType = SmallString<8>; |
9311 | using OMPCtxSelectorData = |
9312 | OpenMPCtxSelectorData<OMPCtxStringType, SmallVector<OMPCtxStringType, 4>, |
9313 | ExprResult>; |
9314 | |
9315 | /// Checks if the variant/multiversion functions are compatible. |
9316 | bool areMultiversionVariantFunctionsCompatible( |
9317 | const FunctionDecl *OldFD, const FunctionDecl *NewFD, |
9318 | const PartialDiagnostic &NoProtoDiagID, |
9319 | const PartialDiagnosticAt &NoteCausedDiagIDAt, |
9320 | const PartialDiagnosticAt &NoSupportDiagIDAt, |
9321 | const PartialDiagnosticAt &DiffDiagIDAt, bool TemplatesSupported, |
9322 | bool ConstexprSupported, bool CLinkageMayDiffer); |
9323 | |
9324 | /// Function tries to capture lambda's captured variables in the OpenMP region |
9325 | /// before the original lambda is captured. |
9326 | void tryCaptureOpenMPLambdas(ValueDecl *V); |
9327 | |
9328 | /// Return true if the provided declaration \a VD should be captured by |
9329 | /// reference. |
9330 | /// \param Level Relative level of nested OpenMP construct for that the check |
9331 | /// is performed. |
9332 | /// \param OpenMPCaptureLevel Capture level within an OpenMP construct. |
9333 | bool isOpenMPCapturedByRef(const ValueDecl *D, unsigned Level, |
9334 | unsigned OpenMPCaptureLevel) const; |
9335 | |
9336 | /// Check if the specified variable is used in one of the private |
9337 | /// clauses (private, firstprivate, lastprivate, reduction etc.) in OpenMP |
9338 | /// constructs. |
9339 | VarDecl *isOpenMPCapturedDecl(ValueDecl *D, bool CheckScopeInfo = false, |
9340 | unsigned StopAt = 0); |
9341 | ExprResult getOpenMPCapturedExpr(VarDecl *Capture, ExprValueKind VK, |
9342 | ExprObjectKind OK, SourceLocation Loc); |
9343 | |
9344 | /// If the current region is a loop-based region, mark the start of the loop |
9345 | /// construct. |
9346 | void startOpenMPLoop(); |
9347 | |
9348 | /// If the current region is a range loop-based region, mark the start of the |
9349 | /// loop construct. |
9350 | void startOpenMPCXXRangeFor(); |
9351 | |
9352 | /// Check if the specified variable is used in 'private' clause. |
9353 | /// \param Level Relative level of nested OpenMP construct for that the check |
9354 | /// is performed. |
9355 | bool isOpenMPPrivateDecl(const ValueDecl *D, unsigned Level) const; |
9356 | |
9357 | /// Sets OpenMP capture kind (OMPC_private, OMPC_firstprivate, OMPC_map etc.) |
9358 | /// for \p FD based on DSA for the provided corresponding captured declaration |
9359 | /// \p D. |
9360 | void setOpenMPCaptureKind(FieldDecl *FD, const ValueDecl *D, unsigned Level); |
9361 | |
9362 | /// Check if the specified variable is captured by 'target' directive. |
9363 | /// \param Level Relative level of nested OpenMP construct for that the check |
9364 | /// is performed. |
9365 | bool isOpenMPTargetCapturedDecl(const ValueDecl *D, unsigned Level) const; |
9366 | |
9367 | ExprResult PerformOpenMPImplicitIntegerConversion(SourceLocation OpLoc, |
9368 | Expr *Op); |
9369 | /// Called on start of new data sharing attribute block. |
9370 | void StartOpenMPDSABlock(OpenMPDirectiveKind K, |
9371 | const DeclarationNameInfo &DirName, Scope *CurScope, |
9372 | SourceLocation Loc); |
9373 | /// Start analysis of clauses. |
9374 | void StartOpenMPClause(OpenMPClauseKind K); |
9375 | /// End analysis of clauses. |
9376 | void EndOpenMPClause(); |
9377 | /// Called on end of data sharing attribute block. |
9378 | void EndOpenMPDSABlock(Stmt *CurDirective); |
9379 | |
9380 | /// Check if the current region is an OpenMP loop region and if it is, |
9381 | /// mark loop control variable, used in \p Init for loop initialization, as |
9382 | /// private by default. |
9383 | /// \param Init First part of the for loop. |
9384 | void ActOnOpenMPLoopInitialization(SourceLocation ForLoc, Stmt *Init); |
9385 | |
9386 | // OpenMP directives and clauses. |
9387 | /// Called on correct id-expression from the '#pragma omp |
9388 | /// threadprivate'. |
9389 | ExprResult ActOnOpenMPIdExpression(Scope *CurScope, CXXScopeSpec &ScopeSpec, |
9390 | const DeclarationNameInfo &Id, |
9391 | OpenMPDirectiveKind Kind); |
9392 | /// Called on well-formed '#pragma omp threadprivate'. |
9393 | DeclGroupPtrTy ActOnOpenMPThreadprivateDirective( |
9394 | SourceLocation Loc, |
9395 | ArrayRef<Expr *> VarList); |
9396 | /// Builds a new OpenMPThreadPrivateDecl and checks its correctness. |
9397 | OMPThreadPrivateDecl *CheckOMPThreadPrivateDecl(SourceLocation Loc, |
9398 | ArrayRef<Expr *> VarList); |
9399 | /// Called on well-formed '#pragma omp allocate'. |
9400 | DeclGroupPtrTy ActOnOpenMPAllocateDirective(SourceLocation Loc, |
9401 | ArrayRef<Expr *> VarList, |
9402 | ArrayRef<OMPClause *> Clauses, |
9403 | DeclContext *Owner = nullptr); |
9404 | /// Called on well-formed '#pragma omp requires'. |
9405 | DeclGroupPtrTy ActOnOpenMPRequiresDirective(SourceLocation Loc, |
9406 | ArrayRef<OMPClause *> ClauseList); |
9407 | /// Check restrictions on Requires directive |
9408 | OMPRequiresDecl *CheckOMPRequiresDecl(SourceLocation Loc, |
9409 | ArrayRef<OMPClause *> Clauses); |
9410 | /// Check if the specified type is allowed to be used in 'omp declare |
9411 | /// reduction' construct. |
9412 | QualType ActOnOpenMPDeclareReductionType(SourceLocation TyLoc, |
9413 | TypeResult ParsedType); |
9414 | /// Called on start of '#pragma omp declare reduction'. |
9415 | DeclGroupPtrTy ActOnOpenMPDeclareReductionDirectiveStart( |
9416 | Scope *S, DeclContext *DC, DeclarationName Name, |
9417 | ArrayRef<std::pair<QualType, SourceLocation>> ReductionTypes, |
9418 | AccessSpecifier AS, Decl *PrevDeclInScope = nullptr); |
9419 | /// Initialize declare reduction construct initializer. |
9420 | void ActOnOpenMPDeclareReductionCombinerStart(Scope *S, Decl *D); |
9421 | /// Finish current declare reduction construct initializer. |
9422 | void ActOnOpenMPDeclareReductionCombinerEnd(Decl *D, Expr *Combiner); |
9423 | /// Initialize declare reduction construct initializer. |
9424 | /// \return omp_priv variable. |
9425 | VarDecl *ActOnOpenMPDeclareReductionInitializerStart(Scope *S, Decl *D); |
9426 | /// Finish current declare reduction construct initializer. |
9427 | void ActOnOpenMPDeclareReductionInitializerEnd(Decl *D, Expr *Initializer, |
9428 | VarDecl *OmpPrivParm); |
9429 | /// Called at the end of '#pragma omp declare reduction'. |
9430 | DeclGroupPtrTy ActOnOpenMPDeclareReductionDirectiveEnd( |
9431 | Scope *S, DeclGroupPtrTy DeclReductions, bool IsValid); |
9432 | |
9433 | /// Check variable declaration in 'omp declare mapper' construct. |
9434 | TypeResult ActOnOpenMPDeclareMapperVarDecl(Scope *S, Declarator &D); |
9435 | /// Check if the specified type is allowed to be used in 'omp declare |
9436 | /// mapper' construct. |
9437 | QualType ActOnOpenMPDeclareMapperType(SourceLocation TyLoc, |
9438 | TypeResult ParsedType); |
9439 | /// Called on start of '#pragma omp declare mapper'. |
9440 | OMPDeclareMapperDecl *ActOnOpenMPDeclareMapperDirectiveStart( |
9441 | Scope *S, DeclContext *DC, DeclarationName Name, QualType MapperType, |
9442 | SourceLocation StartLoc, DeclarationName VN, AccessSpecifier AS, |
9443 | Decl *PrevDeclInScope = nullptr); |
9444 | /// Build the mapper variable of '#pragma omp declare mapper'. |
9445 | void ActOnOpenMPDeclareMapperDirectiveVarDecl(OMPDeclareMapperDecl *DMD, |
9446 | Scope *S, QualType MapperType, |
9447 | SourceLocation StartLoc, |
9448 | DeclarationName VN); |
9449 | /// Called at the end of '#pragma omp declare mapper'. |
9450 | DeclGroupPtrTy |
9451 | ActOnOpenMPDeclareMapperDirectiveEnd(OMPDeclareMapperDecl *D, Scope *S, |
9452 | ArrayRef<OMPClause *> ClauseList); |
9453 | |
9454 | /// Called on the start of target region i.e. '#pragma omp declare target'. |
9455 | bool ActOnStartOpenMPDeclareTargetDirective(SourceLocation Loc); |
9456 | /// Called at the end of target region i.e. '#pragme omp end declare target'. |
9457 | void ActOnFinishOpenMPDeclareTargetDirective(); |
9458 | /// Searches for the provided declaration name for OpenMP declare target |
9459 | /// directive. |
9460 | NamedDecl * |
9461 | lookupOpenMPDeclareTargetName(Scope *CurScope, CXXScopeSpec &ScopeSpec, |
9462 | const DeclarationNameInfo &Id, |
9463 | NamedDeclSetType &SameDirectiveDecls); |
9464 | /// Called on correct id-expression from the '#pragma omp declare target'. |
9465 | void ActOnOpenMPDeclareTargetName(NamedDecl *ND, SourceLocation Loc, |
9466 | OMPDeclareTargetDeclAttr::MapTypeTy MT, |
9467 | OMPDeclareTargetDeclAttr::DevTypeTy DT); |
9468 | /// Check declaration inside target region. |
9469 | void |
9470 | checkDeclIsAllowedInOpenMPTarget(Expr *E, Decl *D, |
9471 | SourceLocation IdLoc = SourceLocation()); |
9472 | /// Return true inside OpenMP declare target region. |
9473 | bool isInOpenMPDeclareTargetContext() const { |
9474 | return DeclareTargetNestingLevel > 0; |
9475 | } |
9476 | /// Return true inside OpenMP target region. |
9477 | bool isInOpenMPTargetExecutionDirective() const; |
9478 | |
9479 | /// Return the number of captured regions created for an OpenMP directive. |
9480 | static int getOpenMPCaptureLevels(OpenMPDirectiveKind Kind); |
9481 | |
9482 | /// Initialization of captured region for OpenMP region. |
9483 | void ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope); |
9484 | /// End of OpenMP region. |
9485 | /// |
9486 | /// \param S Statement associated with the current OpenMP region. |
9487 | /// \param Clauses List of clauses for the current OpenMP region. |
9488 | /// |
9489 | /// \returns Statement for finished OpenMP region. |
9490 | StmtResult ActOnOpenMPRegionEnd(StmtResult S, ArrayRef<OMPClause *> Clauses); |
9491 | StmtResult ActOnOpenMPExecutableDirective( |
9492 | OpenMPDirectiveKind Kind, const DeclarationNameInfo &DirName, |
9493 | OpenMPDirectiveKind CancelRegion, ArrayRef<OMPClause *> Clauses, |
9494 | Stmt *AStmt, SourceLocation StartLoc, SourceLocation EndLoc); |
9495 | /// Called on well-formed '\#pragma omp parallel' after parsing |
9496 | /// of the associated statement. |
9497 | StmtResult ActOnOpenMPParallelDirective(ArrayRef<OMPClause *> Clauses, |
9498 | Stmt *AStmt, |
9499 | SourceLocation StartLoc, |
9500 | SourceLocation EndLoc); |
9501 | using VarsWithInheritedDSAType = |
9502 | llvm::SmallDenseMap<const ValueDecl *, const Expr *, 4>; |
9503 | /// Called on well-formed '\#pragma omp simd' after parsing |
9504 | /// of the associated statement. |
9505 | StmtResult |
9506 | ActOnOpenMPSimdDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9507 | SourceLocation StartLoc, SourceLocation EndLoc, |
9508 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9509 | /// Called on well-formed '\#pragma omp for' after parsing |
9510 | /// of the associated statement. |
9511 | StmtResult |
9512 | ActOnOpenMPForDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9513 | SourceLocation StartLoc, SourceLocation EndLoc, |
9514 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9515 | /// Called on well-formed '\#pragma omp for simd' after parsing |
9516 | /// of the associated statement. |
9517 | StmtResult |
9518 | ActOnOpenMPForSimdDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9519 | SourceLocation StartLoc, SourceLocation EndLoc, |
9520 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9521 | /// Called on well-formed '\#pragma omp sections' after parsing |
9522 | /// of the associated statement. |
9523 | StmtResult ActOnOpenMPSectionsDirective(ArrayRef<OMPClause *> Clauses, |
9524 | Stmt *AStmt, SourceLocation StartLoc, |
9525 | SourceLocation EndLoc); |
9526 | /// Called on well-formed '\#pragma omp section' after parsing of the |
9527 | /// associated statement. |
9528 | StmtResult ActOnOpenMPSectionDirective(Stmt *AStmt, SourceLocation StartLoc, |
9529 | SourceLocation EndLoc); |
9530 | /// Called on well-formed '\#pragma omp single' after parsing of the |
9531 | /// associated statement. |
9532 | StmtResult ActOnOpenMPSingleDirective(ArrayRef<OMPClause *> Clauses, |
9533 | Stmt *AStmt, SourceLocation StartLoc, |
9534 | SourceLocation EndLoc); |
9535 | /// Called on well-formed '\#pragma omp master' after parsing of the |
9536 | /// associated statement. |
9537 | StmtResult ActOnOpenMPMasterDirective(Stmt *AStmt, SourceLocation StartLoc, |
9538 | SourceLocation EndLoc); |
9539 | /// Called on well-formed '\#pragma omp critical' after parsing of the |
9540 | /// associated statement. |
9541 | StmtResult ActOnOpenMPCriticalDirective(const DeclarationNameInfo &DirName, |
9542 | ArrayRef<OMPClause *> Clauses, |
9543 | Stmt *AStmt, SourceLocation StartLoc, |
9544 | SourceLocation EndLoc); |
9545 | /// Called on well-formed '\#pragma omp parallel for' after parsing |
9546 | /// of the associated statement. |
9547 | StmtResult ActOnOpenMPParallelForDirective( |
9548 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9549 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9550 | /// Called on well-formed '\#pragma omp parallel for simd' after |
9551 | /// parsing of the associated statement. |
9552 | StmtResult ActOnOpenMPParallelForSimdDirective( |
9553 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9554 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9555 | /// Called on well-formed '\#pragma omp parallel sections' after |
9556 | /// parsing of the associated statement. |
9557 | StmtResult ActOnOpenMPParallelSectionsDirective(ArrayRef<OMPClause *> Clauses, |
9558 | Stmt *AStmt, |
9559 | SourceLocation StartLoc, |
9560 | SourceLocation EndLoc); |
9561 | /// Called on well-formed '\#pragma omp task' after parsing of the |
9562 | /// associated statement. |
9563 | StmtResult ActOnOpenMPTaskDirective(ArrayRef<OMPClause *> Clauses, |
9564 | Stmt *AStmt, SourceLocation StartLoc, |
9565 | SourceLocation EndLoc); |
9566 | /// Called on well-formed '\#pragma omp taskyield'. |
9567 | StmtResult ActOnOpenMPTaskyieldDirective(SourceLocation StartLoc, |
9568 | SourceLocation EndLoc); |
9569 | /// Called on well-formed '\#pragma omp barrier'. |
9570 | StmtResult ActOnOpenMPBarrierDirective(SourceLocation StartLoc, |
9571 | SourceLocation EndLoc); |
9572 | /// Called on well-formed '\#pragma omp taskwait'. |
9573 | StmtResult ActOnOpenMPTaskwaitDirective(SourceLocation StartLoc, |
9574 | SourceLocation EndLoc); |
9575 | /// Called on well-formed '\#pragma omp taskgroup'. |
9576 | StmtResult ActOnOpenMPTaskgroupDirective(ArrayRef<OMPClause *> Clauses, |
9577 | Stmt *AStmt, SourceLocation StartLoc, |
9578 | SourceLocation EndLoc); |
9579 | /// Called on well-formed '\#pragma omp flush'. |
9580 | StmtResult ActOnOpenMPFlushDirective(ArrayRef<OMPClause *> Clauses, |
9581 | SourceLocation StartLoc, |
9582 | SourceLocation EndLoc); |
9583 | /// Called on well-formed '\#pragma omp ordered' after parsing of the |
9584 | /// associated statement. |
9585 | StmtResult ActOnOpenMPOrderedDirective(ArrayRef<OMPClause *> Clauses, |
9586 | Stmt *AStmt, SourceLocation StartLoc, |
9587 | SourceLocation EndLoc); |
9588 | /// Called on well-formed '\#pragma omp atomic' after parsing of the |
9589 | /// associated statement. |
9590 | StmtResult ActOnOpenMPAtomicDirective(ArrayRef<OMPClause *> Clauses, |
9591 | Stmt *AStmt, SourceLocation StartLoc, |
9592 | SourceLocation EndLoc); |
9593 | /// Called on well-formed '\#pragma omp target' after parsing of the |
9594 | /// associated statement. |
9595 | StmtResult ActOnOpenMPTargetDirective(ArrayRef<OMPClause *> Clauses, |
9596 | Stmt *AStmt, SourceLocation StartLoc, |
9597 | SourceLocation EndLoc); |
9598 | /// Called on well-formed '\#pragma omp target data' after parsing of |
9599 | /// the associated statement. |
9600 | StmtResult ActOnOpenMPTargetDataDirective(ArrayRef<OMPClause *> Clauses, |
9601 | Stmt *AStmt, SourceLocation StartLoc, |
9602 | SourceLocation EndLoc); |
9603 | /// Called on well-formed '\#pragma omp target enter data' after |
9604 | /// parsing of the associated statement. |
9605 | StmtResult ActOnOpenMPTargetEnterDataDirective(ArrayRef<OMPClause *> Clauses, |
9606 | SourceLocation StartLoc, |
9607 | SourceLocation EndLoc, |
9608 | Stmt *AStmt); |
9609 | /// Called on well-formed '\#pragma omp target exit data' after |
9610 | /// parsing of the associated statement. |
9611 | StmtResult ActOnOpenMPTargetExitDataDirective(ArrayRef<OMPClause *> Clauses, |
9612 | SourceLocation StartLoc, |
9613 | SourceLocation EndLoc, |
9614 | Stmt *AStmt); |
9615 | /// Called on well-formed '\#pragma omp target parallel' after |
9616 | /// parsing of the associated statement. |
9617 | StmtResult ActOnOpenMPTargetParallelDirective(ArrayRef<OMPClause *> Clauses, |
9618 | Stmt *AStmt, |
9619 | SourceLocation StartLoc, |
9620 | SourceLocation EndLoc); |
9621 | /// Called on well-formed '\#pragma omp target parallel for' after |
9622 | /// parsing of the associated statement. |
9623 | StmtResult ActOnOpenMPTargetParallelForDirective( |
9624 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9625 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9626 | /// Called on well-formed '\#pragma omp teams' after parsing of the |
9627 | /// associated statement. |
9628 | StmtResult ActOnOpenMPTeamsDirective(ArrayRef<OMPClause *> Clauses, |
9629 | Stmt *AStmt, SourceLocation StartLoc, |
9630 | SourceLocation EndLoc); |
9631 | /// Called on well-formed '\#pragma omp cancellation point'. |
9632 | StmtResult |
9633 | ActOnOpenMPCancellationPointDirective(SourceLocation StartLoc, |
9634 | SourceLocation EndLoc, |
9635 | OpenMPDirectiveKind CancelRegion); |
9636 | /// Called on well-formed '\#pragma omp cancel'. |
9637 | StmtResult ActOnOpenMPCancelDirective(ArrayRef<OMPClause *> Clauses, |
9638 | SourceLocation StartLoc, |
9639 | SourceLocation EndLoc, |
9640 | OpenMPDirectiveKind CancelRegion); |
9641 | /// Called on well-formed '\#pragma omp taskloop' after parsing of the |
9642 | /// associated statement. |
9643 | StmtResult |
9644 | ActOnOpenMPTaskLoopDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9645 | SourceLocation StartLoc, SourceLocation EndLoc, |
9646 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9647 | /// Called on well-formed '\#pragma omp taskloop simd' after parsing of |
9648 | /// the associated statement. |
9649 | StmtResult ActOnOpenMPTaskLoopSimdDirective( |
9650 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9651 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9652 | /// Called on well-formed '\#pragma omp master taskloop' after parsing of the |
9653 | /// associated statement. |
9654 | StmtResult ActOnOpenMPMasterTaskLoopDirective( |
9655 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9656 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9657 | /// Called on well-formed '\#pragma omp master taskloop simd' after parsing of |
9658 | /// the associated statement. |
9659 | StmtResult ActOnOpenMPMasterTaskLoopSimdDirective( |
9660 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9661 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9662 | /// Called on well-formed '\#pragma omp parallel master taskloop' after |
9663 | /// parsing of the associated statement. |
9664 | StmtResult ActOnOpenMPParallelMasterTaskLoopDirective( |
9665 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9666 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9667 | /// Called on well-formed '\#pragma omp parallel master taskloop simd' after |
9668 | /// parsing of the associated statement. |
9669 | StmtResult ActOnOpenMPParallelMasterTaskLoopSimdDirective( |
9670 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9671 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9672 | /// Called on well-formed '\#pragma omp distribute' after parsing |
9673 | /// of the associated statement. |
9674 | StmtResult |
9675 | ActOnOpenMPDistributeDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9676 | SourceLocation StartLoc, SourceLocation EndLoc, |
9677 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9678 | /// Called on well-formed '\#pragma omp target update'. |
9679 | StmtResult ActOnOpenMPTargetUpdateDirective(ArrayRef<OMPClause *> Clauses, |
9680 | SourceLocation StartLoc, |
9681 | SourceLocation EndLoc, |
9682 | Stmt *AStmt); |
9683 | /// Called on well-formed '\#pragma omp distribute parallel for' after |
9684 | /// parsing of the associated statement. |
9685 | StmtResult ActOnOpenMPDistributeParallelForDirective( |
9686 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9687 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9688 | /// Called on well-formed '\#pragma omp distribute parallel for simd' |
9689 | /// after parsing of the associated statement. |
9690 | StmtResult ActOnOpenMPDistributeParallelForSimdDirective( |
9691 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9692 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9693 | /// Called on well-formed '\#pragma omp distribute simd' after |
9694 | /// parsing of the associated statement. |
9695 | StmtResult ActOnOpenMPDistributeSimdDirective( |
9696 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9697 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9698 | /// Called on well-formed '\#pragma omp target parallel for simd' after |
9699 | /// parsing of the associated statement. |
9700 | StmtResult ActOnOpenMPTargetParallelForSimdDirective( |
9701 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9702 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9703 | /// Called on well-formed '\#pragma omp target simd' after parsing of |
9704 | /// the associated statement. |
9705 | StmtResult |
9706 | ActOnOpenMPTargetSimdDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9707 | SourceLocation StartLoc, SourceLocation EndLoc, |
9708 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9709 | /// Called on well-formed '\#pragma omp teams distribute' after parsing of |
9710 | /// the associated statement. |
9711 | StmtResult ActOnOpenMPTeamsDistributeDirective( |
9712 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9713 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9714 | /// Called on well-formed '\#pragma omp teams distribute simd' after parsing |
9715 | /// of the associated statement. |
9716 | StmtResult ActOnOpenMPTeamsDistributeSimdDirective( |
9717 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9718 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9719 | /// Called on well-formed '\#pragma omp teams distribute parallel for simd' |
9720 | /// after parsing of the associated statement. |
9721 | StmtResult ActOnOpenMPTeamsDistributeParallelForSimdDirective( |
9722 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9723 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9724 | /// Called on well-formed '\#pragma omp teams distribute parallel for' |
9725 | /// after parsing of the associated statement. |
9726 | StmtResult ActOnOpenMPTeamsDistributeParallelForDirective( |
9727 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9728 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9729 | /// Called on well-formed '\#pragma omp target teams' after parsing of the |
9730 | /// associated statement. |
9731 | StmtResult ActOnOpenMPTargetTeamsDirective(ArrayRef<OMPClause *> Clauses, |
9732 | Stmt *AStmt, |
9733 | SourceLocation StartLoc, |
9734 | SourceLocation EndLoc); |
9735 | /// Called on well-formed '\#pragma omp target teams distribute' after parsing |
9736 | /// of the associated statement. |
9737 | StmtResult ActOnOpenMPTargetTeamsDistributeDirective( |
9738 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9739 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9740 | /// Called on well-formed '\#pragma omp target teams distribute parallel for' |
9741 | /// after parsing of the associated statement. |
9742 | StmtResult ActOnOpenMPTargetTeamsDistributeParallelForDirective( |
9743 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9744 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9745 | /// Called on well-formed '\#pragma omp target teams distribute parallel for |
9746 | /// simd' after parsing of the associated statement. |
9747 | StmtResult ActOnOpenMPTargetTeamsDistributeParallelForSimdDirective( |
9748 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9749 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9750 | /// Called on well-formed '\#pragma omp target teams distribute simd' after |
9751 | /// parsing of the associated statement. |
9752 | StmtResult ActOnOpenMPTargetTeamsDistributeSimdDirective( |
9753 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9754 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9755 | |
9756 | /// Checks correctness of linear modifiers. |
9757 | bool CheckOpenMPLinearModifier(OpenMPLinearClauseKind LinKind, |
9758 | SourceLocation LinLoc); |
9759 | /// Checks that the specified declaration matches requirements for the linear |
9760 | /// decls. |
9761 | bool CheckOpenMPLinearDecl(const ValueDecl *D, SourceLocation ELoc, |
9762 | OpenMPLinearClauseKind LinKind, QualType Type); |
9763 | |
9764 | /// Called on well-formed '\#pragma omp declare simd' after parsing of |
9765 | /// the associated method/function. |
9766 | DeclGroupPtrTy ActOnOpenMPDeclareSimdDirective( |
9767 | DeclGroupPtrTy DG, OMPDeclareSimdDeclAttr::BranchStateTy BS, |
9768 | Expr *Simdlen, ArrayRef<Expr *> Uniforms, ArrayRef<Expr *> Aligneds, |
9769 | ArrayRef<Expr *> Alignments, ArrayRef<Expr *> Linears, |
9770 | ArrayRef<unsigned> LinModifiers, ArrayRef<Expr *> Steps, SourceRange SR); |
9771 | |
9772 | /// Checks '\#pragma omp declare variant' variant function and original |
9773 | /// functions after parsing of the associated method/function. |
9774 | /// \param DG Function declaration to which declare variant directive is |
9775 | /// applied to. |
9776 | /// \param VariantRef Expression that references the variant function, which |
9777 | /// must be used instead of the original one, specified in \p DG. |
9778 | /// \returns None, if the function/variant function are not compatible with |
9779 | /// the pragma, pair of original function/variant ref expression otherwise. |
9780 | Optional<std::pair<FunctionDecl *, Expr *>> checkOpenMPDeclareVariantFunction( |
9781 | DeclGroupPtrTy DG, Expr *VariantRef, SourceRange SR); |
9782 | |
9783 | /// Called on well-formed '\#pragma omp declare variant' after parsing of |
9784 | /// the associated method/function. |
9785 | /// \param FD Function declaration to which declare variant directive is |
9786 | /// applied to. |
9787 | /// \param VariantRef Expression that references the variant function, which |
9788 | /// must be used instead of the original one, specified in \p DG. |
9789 | /// \param Data Set of context-specific data for the specified context |
9790 | /// selector. |
9791 | void ActOnOpenMPDeclareVariantDirective(FunctionDecl *FD, Expr *VariantRef, |
9792 | SourceRange SR, |
9793 | ArrayRef<OMPCtxSelectorData> Data); |
9794 | |
9795 | OMPClause *ActOnOpenMPSingleExprClause(OpenMPClauseKind Kind, |
9796 | Expr *Expr, |
9797 | SourceLocation StartLoc, |
9798 | SourceLocation LParenLoc, |
9799 | SourceLocation EndLoc); |
9800 | /// Called on well-formed 'allocator' clause. |
9801 | OMPClause *ActOnOpenMPAllocatorClause(Expr *Allocator, |
9802 | SourceLocation StartLoc, |
9803 | SourceLocation LParenLoc, |
9804 | SourceLocation EndLoc); |
9805 | /// Called on well-formed 'if' clause. |
9806 | OMPClause *ActOnOpenMPIfClause(OpenMPDirectiveKind NameModifier, |
9807 | Expr *Condition, SourceLocation StartLoc, |
9808 | SourceLocation LParenLoc, |
9809 | SourceLocation NameModifierLoc, |
9810 | SourceLocation ColonLoc, |
9811 | SourceLocation EndLoc); |
9812 | /// Called on well-formed 'final' clause. |
9813 | OMPClause *ActOnOpenMPFinalClause(Expr *Condition, SourceLocation StartLoc, |
9814 | SourceLocation LParenLoc, |
9815 | SourceLocation EndLoc); |
9816 | /// Called on well-formed 'num_threads' clause. |
9817 | OMPClause *ActOnOpenMPNumThreadsClause(Expr *NumThreads, |
9818 | SourceLocation StartLoc, |
9819 | SourceLocation LParenLoc, |
9820 | SourceLocation EndLoc); |
9821 | /// Called on well-formed 'safelen' clause. |
9822 | OMPClause *ActOnOpenMPSafelenClause(Expr *Length, |
9823 | SourceLocation StartLoc, |
9824 | SourceLocation LParenLoc, |
9825 | SourceLocation EndLoc); |
9826 | /// Called on well-formed 'simdlen' clause. |
9827 | OMPClause *ActOnOpenMPSimdlenClause(Expr *Length, SourceLocation StartLoc, |
9828 | SourceLocation LParenLoc, |
9829 | SourceLocation EndLoc); |
9830 | /// Called on well-formed 'collapse' clause. |
9831 | OMPClause *ActOnOpenMPCollapseClause(Expr *NumForLoops, |
9832 | SourceLocation StartLoc, |
9833 | SourceLocation LParenLoc, |
9834 | SourceLocation EndLoc); |
9835 | /// Called on well-formed 'ordered' clause. |
9836 | OMPClause * |
9837 | ActOnOpenMPOrderedClause(SourceLocation StartLoc, SourceLocation EndLoc, |
9838 | SourceLocation LParenLoc = SourceLocation(), |
9839 | Expr *NumForLoops = nullptr); |
9840 | /// Called on well-formed 'grainsize' clause. |
9841 | OMPClause *ActOnOpenMPGrainsizeClause(Expr *Size, SourceLocation StartLoc, |
9842 | SourceLocation LParenLoc, |
9843 | SourceLocation EndLoc); |
9844 | /// Called on well-formed 'num_tasks' clause. |
9845 | OMPClause *ActOnOpenMPNumTasksClause(Expr *NumTasks, SourceLocation StartLoc, |
9846 | SourceLocation LParenLoc, |
9847 | SourceLocation EndLoc); |
9848 | /// Called on well-formed 'hint' clause. |
9849 | OMPClause *ActOnOpenMPHintClause(Expr *Hint, SourceLocation StartLoc, |
9850 | SourceLocation LParenLoc, |
9851 | SourceLocation EndLoc); |
9852 | |
9853 | OMPClause *ActOnOpenMPSimpleClause(OpenMPClauseKind Kind, |
9854 | unsigned Argument, |
9855 | SourceLocation ArgumentLoc, |
9856 | SourceLocation StartLoc, |
9857 | SourceLocation LParenLoc, |
9858 | SourceLocation EndLoc); |
9859 | /// Called on well-formed 'default' clause. |
9860 | OMPClause *ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind, |
9861 | SourceLocation KindLoc, |
9862 | SourceLocation StartLoc, |
9863 | SourceLocation LParenLoc, |
9864 | SourceLocation EndLoc); |
9865 | /// Called on well-formed 'proc_bind' clause. |
9866 | OMPClause *ActOnOpenMPProcBindClause(OpenMPProcBindClauseKind Kind, |
9867 | SourceLocation KindLoc, |
9868 | SourceLocation StartLoc, |
9869 | SourceLocation LParenLoc, |
9870 | SourceLocation EndLoc); |
9871 | |
9872 | OMPClause *ActOnOpenMPSingleExprWithArgClause( |
9873 | OpenMPClauseKind Kind, ArrayRef<unsigned> Arguments, Expr *Expr, |
9874 | SourceLocation StartLoc, SourceLocation LParenLoc, |
9875 | ArrayRef<SourceLocation> ArgumentsLoc, SourceLocation DelimLoc, |
9876 | SourceLocation EndLoc); |
9877 | /// Called on well-formed 'schedule' clause. |
9878 | OMPClause *ActOnOpenMPScheduleClause( |
9879 | OpenMPScheduleClauseModifier M1, OpenMPScheduleClauseModifier M2, |
9880 | OpenMPScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc, |
9881 | SourceLocation LParenLoc, SourceLocation M1Loc, SourceLocation M2Loc, |
9882 | SourceLocation KindLoc, SourceLocation CommaLoc, SourceLocation EndLoc); |
9883 | |
9884 | OMPClause *ActOnOpenMPClause(OpenMPClauseKind Kind, SourceLocation StartLoc, |
9885 | SourceLocation EndLoc); |
9886 | /// Called on well-formed 'nowait' clause. |
9887 | OMPClause *ActOnOpenMPNowaitClause(SourceLocation StartLoc, |
9888 | SourceLocation EndLoc); |
9889 | /// Called on well-formed 'untied' clause. |
9890 | OMPClause *ActOnOpenMPUntiedClause(SourceLocation StartLoc, |
9891 | SourceLocation EndLoc); |
9892 | /// Called on well-formed 'mergeable' clause. |
9893 | OMPClause *ActOnOpenMPMergeableClause(SourceLocation StartLoc, |
9894 | SourceLocation EndLoc); |
9895 | /// Called on well-formed 'read' clause. |
9896 | OMPClause *ActOnOpenMPReadClause(SourceLocation StartLoc, |
9897 | SourceLocation EndLoc); |
9898 | /// Called on well-formed 'write' clause. |
9899 | OMPClause *ActOnOpenMPWriteClause(SourceLocation StartLoc, |
9900 | SourceLocation EndLoc); |
9901 | /// Called on well-formed 'update' clause. |
9902 | OMPClause *ActOnOpenMPUpdateClause(SourceLocation StartLoc, |
9903 | SourceLocation EndLoc); |
9904 | /// Called on well-formed 'capture' clause. |
9905 | OMPClause *ActOnOpenMPCaptureClause(SourceLocation StartLoc, |
9906 | SourceLocation EndLoc); |
9907 | /// Called on well-formed 'seq_cst' clause. |
9908 | OMPClause *ActOnOpenMPSeqCstClause(SourceLocation StartLoc, |
9909 | SourceLocation EndLoc); |
9910 | /// Called on well-formed 'threads' clause. |
9911 | OMPClause *ActOnOpenMPThreadsClause(SourceLocation StartLoc, |
9912 | SourceLocation EndLoc); |
9913 | /// Called on well-formed 'simd' clause. |
9914 | OMPClause *ActOnOpenMPSIMDClause(SourceLocation StartLoc, |
9915 | SourceLocation EndLoc); |
9916 | /// Called on well-formed 'nogroup' clause. |
9917 | OMPClause *ActOnOpenMPNogroupClause(SourceLocation StartLoc, |
9918 | SourceLocation EndLoc); |
9919 | /// Called on well-formed 'unified_address' clause. |
9920 | OMPClause *ActOnOpenMPUnifiedAddressClause(SourceLocation StartLoc, |
9921 | SourceLocation EndLoc); |
9922 | |
9923 | /// Called on well-formed 'unified_address' clause. |
9924 | OMPClause *ActOnOpenMPUnifiedSharedMemoryClause(SourceLocation StartLoc, |
9925 | SourceLocation EndLoc); |
9926 | |
9927 | /// Called on well-formed 'reverse_offload' clause. |
9928 | OMPClause *ActOnOpenMPReverseOffloadClause(SourceLocation StartLoc, |
9929 | SourceLocation EndLoc); |
9930 | |
9931 | /// Called on well-formed 'dynamic_allocators' clause. |
9932 | OMPClause *ActOnOpenMPDynamicAllocatorsClause(SourceLocation StartLoc, |
9933 | SourceLocation EndLoc); |
9934 | |
9935 | /// Called on well-formed 'atomic_default_mem_order' clause. |
9936 | OMPClause *ActOnOpenMPAtomicDefaultMemOrderClause( |
9937 | OpenMPAtomicDefaultMemOrderClauseKind Kind, SourceLocation KindLoc, |
9938 | SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation EndLoc); |
9939 | |
9940 | OMPClause *ActOnOpenMPVarListClause( |
9941 | OpenMPClauseKind Kind, ArrayRef<Expr *> Vars, Expr *TailExpr, |
9942 | const OMPVarListLocTy &Locs, SourceLocation ColonLoc, |
9943 | CXXScopeSpec &ReductionOrMapperIdScopeSpec, |
9944 | DeclarationNameInfo &ReductionOrMapperId, OpenMPDependClauseKind DepKind, |
9945 | OpenMPLinearClauseKind LinKind, |
9946 | ArrayRef<OpenMPMapModifierKind> MapTypeModifiers, |
9947 | ArrayRef<SourceLocation> MapTypeModifiersLoc, OpenMPMapClauseKind MapType, |
9948 | bool IsMapTypeImplicit, SourceLocation DepLinMapLoc); |
9949 | /// Called on well-formed 'allocate' clause. |
9950 | OMPClause * |
9951 | ActOnOpenMPAllocateClause(Expr *Allocator, ArrayRef<Expr *> VarList, |
9952 | SourceLocation StartLoc, SourceLocation ColonLoc, |
9953 | SourceLocation LParenLoc, SourceLocation EndLoc); |
9954 | /// Called on well-formed 'private' clause. |
9955 | OMPClause *ActOnOpenMPPrivateClause(ArrayRef<Expr *> VarList, |
9956 | SourceLocation StartLoc, |
9957 | SourceLocation LParenLoc, |
9958 | SourceLocation EndLoc); |
9959 | /// Called on well-formed 'firstprivate' clause. |
9960 | OMPClause *ActOnOpenMPFirstprivateClause(ArrayRef<Expr *> VarList, |
9961 | SourceLocation StartLoc, |
9962 | SourceLocation LParenLoc, |
9963 | SourceLocation EndLoc); |
9964 | /// Called on well-formed 'lastprivate' clause. |
9965 | OMPClause *ActOnOpenMPLastprivateClause(ArrayRef<Expr *> VarList, |
9966 | SourceLocation StartLoc, |
9967 | SourceLocation LParenLoc, |
9968 | SourceLocation EndLoc); |
9969 | /// Called on well-formed 'shared' clause. |
9970 | OMPClause *ActOnOpenMPSharedClause(ArrayRef<Expr *> VarList, |
9971 | SourceLocation StartLoc, |
9972 | SourceLocation LParenLoc, |
9973 | SourceLocation EndLoc); |
9974 | /// Called on well-formed 'reduction' clause. |
9975 | OMPClause *ActOnOpenMPReductionClause( |
9976 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
9977 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
9978 | CXXScopeSpec &ReductionIdScopeSpec, |
9979 | const DeclarationNameInfo &ReductionId, |
9980 | ArrayRef<Expr *> UnresolvedReductions = llvm::None); |
9981 | /// Called on well-formed 'task_reduction' clause. |
9982 | OMPClause *ActOnOpenMPTaskReductionClause( |
9983 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
9984 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
9985 | CXXScopeSpec &ReductionIdScopeSpec, |
9986 | const DeclarationNameInfo &ReductionId, |
9987 | ArrayRef<Expr *> UnresolvedReductions = llvm::None); |
9988 | /// Called on well-formed 'in_reduction' clause. |
9989 | OMPClause *ActOnOpenMPInReductionClause( |
9990 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
9991 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
9992 | CXXScopeSpec &ReductionIdScopeSpec, |
9993 | const DeclarationNameInfo &ReductionId, |
9994 | ArrayRef<Expr *> UnresolvedReductions = llvm::None); |
9995 | /// Called on well-formed 'linear' clause. |
9996 | OMPClause * |
9997 | ActOnOpenMPLinearClause(ArrayRef<Expr *> VarList, Expr *Step, |
9998 | SourceLocation StartLoc, SourceLocation LParenLoc, |
9999 | OpenMPLinearClauseKind LinKind, SourceLocation LinLoc, |
10000 | SourceLocation ColonLoc, SourceLocation EndLoc); |
10001 | /// Called on well-formed 'aligned' clause. |
10002 | OMPClause *ActOnOpenMPAlignedClause(ArrayRef<Expr *> VarList, |
10003 | Expr *Alignment, |
10004 | SourceLocation StartLoc, |
10005 | SourceLocation LParenLoc, |
10006 | SourceLocation ColonLoc, |
10007 | SourceLocation EndLoc); |
10008 | /// Called on well-formed 'copyin' clause. |
10009 | OMPClause *ActOnOpenMPCopyinClause(ArrayRef<Expr *> VarList, |
10010 | SourceLocation StartLoc, |
10011 | SourceLocation LParenLoc, |
10012 | SourceLocation EndLoc); |
10013 | /// Called on well-formed 'copyprivate' clause. |
10014 | OMPClause *ActOnOpenMPCopyprivateClause(ArrayRef<Expr *> VarList, |
10015 | SourceLocation StartLoc, |
10016 | SourceLocation LParenLoc, |
10017 | SourceLocation EndLoc); |
10018 | /// Called on well-formed 'flush' pseudo clause. |
10019 | OMPClause *ActOnOpenMPFlushClause(ArrayRef<Expr *> VarList, |
10020 | SourceLocation StartLoc, |
10021 | SourceLocation LParenLoc, |
10022 | SourceLocation EndLoc); |
10023 | /// Called on well-formed 'depend' clause. |
10024 | OMPClause * |
10025 | ActOnOpenMPDependClause(OpenMPDependClauseKind DepKind, SourceLocation DepLoc, |
10026 | SourceLocation ColonLoc, ArrayRef<Expr *> VarList, |
10027 | SourceLocation StartLoc, SourceLocation LParenLoc, |
10028 | SourceLocation EndLoc); |
10029 | /// Called on well-formed 'device' clause. |
10030 | OMPClause *ActOnOpenMPDeviceClause(Expr *Device, SourceLocation StartLoc, |
10031 | SourceLocation LParenLoc, |
10032 | SourceLocation EndLoc); |
10033 | /// Called on well-formed 'map' clause. |
10034 | OMPClause * |
10035 | ActOnOpenMPMapClause(ArrayRef<OpenMPMapModifierKind> MapTypeModifiers, |
10036 | ArrayRef<SourceLocation> MapTypeModifiersLoc, |
10037 | CXXScopeSpec &MapperIdScopeSpec, |
10038 | DeclarationNameInfo &MapperId, |
10039 | OpenMPMapClauseKind MapType, bool IsMapTypeImplicit, |
10040 | SourceLocation MapLoc, SourceLocation ColonLoc, |
10041 | ArrayRef<Expr *> VarList, const OMPVarListLocTy &Locs, |
10042 | ArrayRef<Expr *> UnresolvedMappers = llvm::None); |
10043 | /// Called on well-formed 'num_teams' clause. |
10044 | OMPClause *ActOnOpenMPNumTeamsClause(Expr *NumTeams, SourceLocation StartLoc, |
10045 | SourceLocation LParenLoc, |
10046 | SourceLocation EndLoc); |
10047 | /// Called on well-formed 'thread_limit' clause. |
10048 | OMPClause *ActOnOpenMPThreadLimitClause(Expr *ThreadLimit, |
10049 | SourceLocation StartLoc, |
10050 | SourceLocation LParenLoc, |
10051 | SourceLocation EndLoc); |
10052 | /// Called on well-formed 'priority' clause. |
10053 | OMPClause *ActOnOpenMPPriorityClause(Expr *Priority, SourceLocation StartLoc, |
10054 | SourceLocation LParenLoc, |
10055 | SourceLocation EndLoc); |
10056 | /// Called on well-formed 'dist_schedule' clause. |
10057 | OMPClause *ActOnOpenMPDistScheduleClause( |
10058 | OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize, |
10059 | SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation KindLoc, |
10060 | SourceLocation CommaLoc, SourceLocation EndLoc); |
10061 | /// Called on well-formed 'defaultmap' clause. |
10062 | OMPClause *ActOnOpenMPDefaultmapClause( |
10063 | OpenMPDefaultmapClauseModifier M, OpenMPDefaultmapClauseKind Kind, |
10064 | SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation MLoc, |
10065 | SourceLocation KindLoc, SourceLocation EndLoc); |
10066 | /// Called on well-formed 'to' clause. |
10067 | OMPClause * |
10068 | ActOnOpenMPToClause(ArrayRef<Expr *> VarList, CXXScopeSpec &MapperIdScopeSpec, |
10069 | DeclarationNameInfo &MapperId, |
10070 | const OMPVarListLocTy &Locs, |
10071 | ArrayRef<Expr *> UnresolvedMappers = llvm::None); |
10072 | /// Called on well-formed 'from' clause. |
10073 | OMPClause *ActOnOpenMPFromClause( |
10074 | ArrayRef<Expr *> VarList, CXXScopeSpec &MapperIdScopeSpec, |
10075 | DeclarationNameInfo &MapperId, const OMPVarListLocTy &Locs, |
10076 | ArrayRef<Expr *> UnresolvedMappers = llvm::None); |
10077 | /// Called on well-formed 'use_device_ptr' clause. |
10078 | OMPClause *ActOnOpenMPUseDevicePtrClause(ArrayRef<Expr *> VarList, |
10079 | const OMPVarListLocTy &Locs); |
10080 | /// Called on well-formed 'is_device_ptr' clause. |
10081 | OMPClause *ActOnOpenMPIsDevicePtrClause(ArrayRef<Expr *> VarList, |
10082 | const OMPVarListLocTy &Locs); |
10083 | |
10084 | /// The kind of conversion being performed. |
10085 | enum CheckedConversionKind { |
10086 | /// An implicit conversion. |
10087 | CCK_ImplicitConversion, |
10088 | /// A C-style cast. |
10089 | CCK_CStyleCast, |
10090 | /// A functional-style cast. |
10091 | CCK_FunctionalCast, |
10092 | /// A cast other than a C-style cast. |
10093 | CCK_OtherCast, |
10094 | /// A conversion for an operand of a builtin overloaded operator. |
10095 | CCK_ForBuiltinOverloadedOp |
10096 | }; |
10097 | |
10098 | static bool isCast(CheckedConversionKind CCK) { |
10099 | return CCK == CCK_CStyleCast || CCK == CCK_FunctionalCast || |
10100 | CCK == CCK_OtherCast; |
10101 | } |
10102 | |
10103 | /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit |
10104 | /// cast. If there is already an implicit cast, merge into the existing one. |
10105 | /// If isLvalue, the result of the cast is an lvalue. |
10106 | ExprResult ImpCastExprToType(Expr *E, QualType Type, CastKind CK, |
10107 | ExprValueKind VK = VK_RValue, |
10108 | const CXXCastPath *BasePath = nullptr, |
10109 | CheckedConversionKind CCK |
10110 | = CCK_ImplicitConversion); |
10111 | |
10112 | /// ScalarTypeToBooleanCastKind - Returns the cast kind corresponding |
10113 | /// to the conversion from scalar type ScalarTy to the Boolean type. |
10114 | static CastKind ScalarTypeToBooleanCastKind(QualType ScalarTy); |
10115 | |
10116 | /// IgnoredValueConversions - Given that an expression's result is |
10117 | /// syntactically ignored, perform any conversions that are |
10118 | /// required. |
10119 | ExprResult IgnoredValueConversions(Expr *E); |
10120 | |
10121 | // UsualUnaryConversions - promotes integers (C99 6.3.1.1p2) and converts |
10122 | // functions and arrays to their respective pointers (C99 6.3.2.1). |
10123 | ExprResult UsualUnaryConversions(Expr *E); |
10124 | |
10125 | /// CallExprUnaryConversions - a special case of an unary conversion |
10126 | /// performed on a function designator of a call expression. |
10127 | ExprResult CallExprUnaryConversions(Expr *E); |
10128 | |
10129 | // DefaultFunctionArrayConversion - converts functions and arrays |
10130 | // to their respective pointers (C99 6.3.2.1). |
10131 | ExprResult DefaultFunctionArrayConversion(Expr *E, bool Diagnose = true); |
10132 | |
10133 | // DefaultFunctionArrayLvalueConversion - converts functions and |
10134 | // arrays to their respective pointers and performs the |
10135 | // lvalue-to-rvalue conversion. |
10136 | ExprResult DefaultFunctionArrayLvalueConversion(Expr *E, |
10137 | bool Diagnose = true); |
10138 | |
10139 | // DefaultLvalueConversion - performs lvalue-to-rvalue conversion on |
10140 | // the operand. This is DefaultFunctionArrayLvalueConversion, |
10141 | // except that it assumes the operand isn't of function or array |
10142 | // type. |
10143 | ExprResult DefaultLvalueConversion(Expr *E); |
10144 | |
10145 | // DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that |
10146 | // do not have a prototype. Integer promotions are performed on each |
10147 | // argument, and arguments that have type float are promoted to double. |
10148 | ExprResult DefaultArgumentPromotion(Expr *E); |
10149 | |
10150 | /// If \p E is a prvalue denoting an unmaterialized temporary, materialize |
10151 | /// it as an xvalue. In C++98, the result will still be a prvalue, because |
10152 | /// we don't have xvalues there. |
10153 | ExprResult TemporaryMaterializationConversion(Expr *E); |
10154 | |
10155 | // Used for emitting the right warning by DefaultVariadicArgumentPromotion |
10156 | enum VariadicCallType { |
10157 | VariadicFunction, |
10158 | VariadicBlock, |
10159 | VariadicMethod, |
10160 | VariadicConstructor, |
10161 | VariadicDoesNotApply |
10162 | }; |
10163 | |
10164 | VariadicCallType getVariadicCallType(FunctionDecl *FDecl, |
10165 | const FunctionProtoType *Proto, |
10166 | Expr *Fn); |
10167 | |
10168 | // Used for determining in which context a type is allowed to be passed to a |
10169 | // vararg function. |
10170 | enum VarArgKind { |
10171 | VAK_Valid, |
10172 | VAK_ValidInCXX11, |
10173 | VAK_Undefined, |
10174 | VAK_MSVCUndefined, |
10175 | VAK_Invalid |
10176 | }; |
10177 | |
10178 | // Determines which VarArgKind fits an expression. |
10179 | VarArgKind isValidVarArgType(const QualType &Ty); |
10180 | |
10181 | /// Check to see if the given expression is a valid argument to a variadic |
10182 | /// function, issuing a diagnostic if not. |
10183 | void checkVariadicArgument(const Expr *E, VariadicCallType CT); |
10184 | |
10185 | /// Check to see if a given expression could have '.c_str()' called on it. |
10186 | bool hasCStrMethod(const Expr *E); |
10187 | |
10188 | /// GatherArgumentsForCall - Collector argument expressions for various |
10189 | /// form of call prototypes. |
10190 | bool GatherArgumentsForCall(SourceLocation CallLoc, FunctionDecl *FDecl, |
10191 | const FunctionProtoType *Proto, |
10192 | unsigned FirstParam, ArrayRef<Expr *> Args, |
10193 | SmallVectorImpl<Expr *> &AllArgs, |
10194 | VariadicCallType CallType = VariadicDoesNotApply, |
10195 | bool AllowExplicit = false, |
10196 | bool IsListInitialization = false); |
10197 | |
10198 | // DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but |
10199 | // will create a runtime trap if the resulting type is not a POD type. |
10200 | ExprResult DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, |
10201 | FunctionDecl *FDecl); |
10202 | |
10203 | // UsualArithmeticConversions - performs the UsualUnaryConversions on it's |
10204 | // operands and then handles various conversions that are common to binary |
10205 | // operators (C99 6.3.1.8). If both operands aren't arithmetic, this |
10206 | // routine returns the first non-arithmetic type found. The client is |
10207 | // responsible for emitting appropriate error diagnostics. |
10208 | QualType UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, |
10209 | bool IsCompAssign = false); |
10210 | |
10211 | /// AssignConvertType - All of the 'assignment' semantic checks return this |
10212 | /// enum to indicate whether the assignment was allowed. These checks are |
10213 | /// done for simple assignments, as well as initialization, return from |
10214 | /// function, argument passing, etc. The query is phrased in terms of a |
10215 | /// source and destination type. |
10216 | enum AssignConvertType { |
10217 | /// Compatible - the types are compatible according to the standard. |
10218 | Compatible, |
10219 | |
10220 | /// PointerToInt - The assignment converts a pointer to an int, which we |
10221 | /// accept as an extension. |
10222 | PointerToInt, |
10223 | |
10224 | /// IntToPointer - The assignment converts an int to a pointer, which we |
10225 | /// accept as an extension. |
10226 | IntToPointer, |
10227 | |
10228 | /// FunctionVoidPointer - The assignment is between a function pointer and |
10229 | /// void*, which the standard doesn't allow, but we accept as an extension. |
10230 | FunctionVoidPointer, |
10231 | |
10232 | /// IncompatiblePointer - The assignment is between two pointers types that |
10233 | /// are not compatible, but we accept them as an extension. |
10234 | IncompatiblePointer, |
10235 | |
10236 | /// IncompatiblePointerSign - The assignment is between two pointers types |
10237 | /// which point to integers which have a different sign, but are otherwise |
10238 | /// identical. This is a subset of the above, but broken out because it's by |
10239 | /// far the most common case of incompatible pointers. |
10240 | IncompatiblePointerSign, |
10241 | |
10242 | /// CompatiblePointerDiscardsQualifiers - The assignment discards |
10243 | /// c/v/r qualifiers, which we accept as an extension. |
10244 | CompatiblePointerDiscardsQualifiers, |
10245 | |
10246 | /// IncompatiblePointerDiscardsQualifiers - The assignment |
10247 | /// discards qualifiers that we don't permit to be discarded, |
10248 | /// like address spaces. |
10249 | IncompatiblePointerDiscardsQualifiers, |
10250 | |
10251 | /// IncompatibleNestedPointerAddressSpaceMismatch - The assignment |
10252 | /// changes address spaces in nested pointer types which is not allowed. |
10253 | /// For instance, converting __private int ** to __generic int ** is |
10254 | /// illegal even though __private could be converted to __generic. |
10255 | IncompatibleNestedPointerAddressSpaceMismatch, |
10256 | |
10257 | /// IncompatibleNestedPointerQualifiers - The assignment is between two |
10258 | /// nested pointer types, and the qualifiers other than the first two |
10259 | /// levels differ e.g. char ** -> const char **, but we accept them as an |
10260 | /// extension. |
10261 | IncompatibleNestedPointerQualifiers, |
10262 | |
10263 | /// IncompatibleVectors - The assignment is between two vector types that |
10264 | /// have the same size, which we accept as an extension. |
10265 | IncompatibleVectors, |
10266 | |
10267 | /// IntToBlockPointer - The assignment converts an int to a block |
10268 | /// pointer. We disallow this. |
10269 | IntToBlockPointer, |
10270 | |
10271 | /// IncompatibleBlockPointer - The assignment is between two block |
10272 | /// pointers types that are not compatible. |
10273 | IncompatibleBlockPointer, |
10274 | |
10275 | /// IncompatibleObjCQualifiedId - The assignment is between a qualified |
10276 | /// id type and something else (that is incompatible with it). For example, |
10277 | /// "id <XXX>" = "Foo *", where "Foo *" doesn't implement the XXX protocol. |
10278 | IncompatibleObjCQualifiedId, |
10279 | |
10280 | /// IncompatibleObjCWeakRef - Assigning a weak-unavailable object to an |
10281 | /// object with __weak qualifier. |
10282 | IncompatibleObjCWeakRef, |
10283 | |
10284 | /// Incompatible - We reject this conversion outright, it is invalid to |
10285 | /// represent it in the AST. |
10286 | Incompatible |
10287 | }; |
10288 | |
10289 | /// DiagnoseAssignmentResult - Emit a diagnostic, if required, for the |
10290 | /// assignment conversion type specified by ConvTy. This returns true if the |
10291 | /// conversion was invalid or false if the conversion was accepted. |
10292 | bool DiagnoseAssignmentResult(AssignConvertType ConvTy, |
10293 | SourceLocation Loc, |
10294 | QualType DstType, QualType SrcType, |
10295 | Expr *SrcExpr, AssignmentAction Action, |
10296 | bool *Complained = nullptr); |
10297 | |
10298 | /// IsValueInFlagEnum - Determine if a value is allowed as part of a flag |
10299 | /// enum. If AllowMask is true, then we also allow the complement of a valid |
10300 | /// value, to be used as a mask. |
10301 | bool IsValueInFlagEnum(const EnumDecl *ED, const llvm::APInt &Val, |
10302 | bool AllowMask) const; |
10303 | |
10304 | /// DiagnoseAssignmentEnum - Warn if assignment to enum is a constant |
10305 | /// integer not in the range of enum values. |
10306 | void DiagnoseAssignmentEnum(QualType DstType, QualType SrcType, |
10307 | Expr *SrcExpr); |
10308 | |
10309 | /// CheckAssignmentConstraints - Perform type checking for assignment, |
10310 | /// argument passing, variable initialization, and function return values. |
10311 | /// C99 6.5.16. |
10312 | AssignConvertType CheckAssignmentConstraints(SourceLocation Loc, |
10313 | QualType LHSType, |
10314 | QualType RHSType); |
10315 | |
10316 | /// Check assignment constraints and optionally prepare for a conversion of |
10317 | /// the RHS to the LHS type. The conversion is prepared for if ConvertRHS |
10318 | /// is true. |
10319 | AssignConvertType CheckAssignmentConstraints(QualType LHSType, |
10320 | ExprResult &RHS, |
10321 | CastKind &Kind, |
10322 | bool ConvertRHS = true); |
10323 | |
10324 | /// Check assignment constraints for an assignment of RHS to LHSType. |
10325 | /// |
10326 | /// \param LHSType The destination type for the assignment. |
10327 | /// \param RHS The source expression for the assignment. |
10328 | /// \param Diagnose If \c true, diagnostics may be produced when checking |
10329 | /// for assignability. If a diagnostic is produced, \p RHS will be |
10330 | /// set to ExprError(). Note that this function may still return |
10331 | /// without producing a diagnostic, even for an invalid assignment. |
10332 | /// \param DiagnoseCFAudited If \c true, the target is a function parameter |
10333 | /// in an audited Core Foundation API and does not need to be checked |
10334 | /// for ARC retain issues. |
10335 | /// \param ConvertRHS If \c true, \p RHS will be updated to model the |
10336 | /// conversions necessary to perform the assignment. If \c false, |
10337 | /// \p Diagnose must also be \c false. |
10338 | AssignConvertType CheckSingleAssignmentConstraints( |
10339 | QualType LHSType, ExprResult &RHS, bool Diagnose = true, |
10340 | bool DiagnoseCFAudited = false, bool ConvertRHS = true); |
10341 | |
10342 | // If the lhs type is a transparent union, check whether we |
10343 | // can initialize the transparent union with the given expression. |
10344 | AssignConvertType CheckTransparentUnionArgumentConstraints(QualType ArgType, |
10345 | ExprResult &RHS); |
10346 | |
10347 | bool IsStringLiteralToNonConstPointerConversion(Expr *From, QualType ToType); |
10348 | |
10349 | bool CheckExceptionSpecCompatibility(Expr *From, QualType ToType); |
10350 | |
10351 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
10352 | AssignmentAction Action, |
10353 | bool AllowExplicit = false); |
10354 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
10355 | AssignmentAction Action, |
10356 | bool AllowExplicit, |
10357 | ImplicitConversionSequence& ICS); |
10358 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
10359 | const ImplicitConversionSequence& ICS, |
10360 | AssignmentAction Action, |
10361 | CheckedConversionKind CCK |
10362 | = CCK_ImplicitConversion); |
10363 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
10364 | const StandardConversionSequence& SCS, |
10365 | AssignmentAction Action, |
10366 | CheckedConversionKind CCK); |
10367 | |
10368 | ExprResult PerformQualificationConversion( |
10369 | Expr *E, QualType Ty, ExprValueKind VK = VK_RValue, |
10370 | CheckedConversionKind CCK = CCK_ImplicitConversion); |
10371 | |
10372 | /// the following "Check" methods will return a valid/converted QualType |
10373 | /// or a null QualType (indicating an error diagnostic was issued). |
10374 | |
10375 | /// type checking binary operators (subroutines of CreateBuiltinBinOp). |
10376 | QualType InvalidOperands(SourceLocation Loc, ExprResult &LHS, |
10377 | ExprResult &RHS); |
10378 | QualType InvalidLogicalVectorOperands(SourceLocation Loc, ExprResult &LHS, |
10379 | ExprResult &RHS); |
10380 | QualType CheckPointerToMemberOperands( // C++ 5.5 |
10381 | ExprResult &LHS, ExprResult &RHS, ExprValueKind &VK, |
10382 | SourceLocation OpLoc, bool isIndirect); |
10383 | QualType CheckMultiplyDivideOperands( // C99 6.5.5 |
10384 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign, |
10385 | bool IsDivide); |
10386 | QualType CheckRemainderOperands( // C99 6.5.5 |
10387 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10388 | bool IsCompAssign = false); |
10389 | QualType CheckAdditionOperands( // C99 6.5.6 |
10390 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10391 | BinaryOperatorKind Opc, QualType* CompLHSTy = nullptr); |
10392 | QualType CheckSubtractionOperands( // C99 6.5.6 |
10393 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10394 | QualType* CompLHSTy = nullptr); |
10395 | QualType CheckShiftOperands( // C99 6.5.7 |
10396 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10397 | BinaryOperatorKind Opc, bool IsCompAssign = false); |
10398 | void CheckPtrComparisonWithNullChar(ExprResult &E, ExprResult &NullE); |
10399 | QualType CheckCompareOperands( // C99 6.5.8/9 |
10400 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10401 | BinaryOperatorKind Opc); |
10402 | QualType CheckBitwiseOperands( // C99 6.5.[10...12] |
10403 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10404 | BinaryOperatorKind Opc); |
10405 | QualType CheckLogicalOperands( // C99 6.5.[13,14] |
10406 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
10407 | BinaryOperatorKind Opc); |
10408 | // CheckAssignmentOperands is used for both simple and compound assignment. |
10409 | // For simple assignment, pass both expressions and a null converted type. |
10410 | // For compound assignment, pass both expressions and the converted type. |
10411 | QualType CheckAssignmentOperands( // C99 6.5.16.[1,2] |
10412 | Expr *LHSExpr, ExprResult &RHS, SourceLocation Loc, QualType CompoundType); |
10413 | |
10414 | ExprResult checkPseudoObjectIncDec(Scope *S, SourceLocation OpLoc, |
10415 | UnaryOperatorKind Opcode, Expr *Op); |
10416 | ExprResult checkPseudoObjectAssignment(Scope *S, SourceLocation OpLoc, |
10417 | BinaryOperatorKind Opcode, |
10418 | Expr *LHS, Expr *RHS); |
10419 | ExprResult checkPseudoObjectRValue(Expr *E); |
10420 | Expr *recreateSyntacticForm(PseudoObjectExpr *E); |
10421 | |
10422 | QualType CheckConditionalOperands( // C99 6.5.15 |
10423 | ExprResult &Cond, ExprResult &LHS, ExprResult &RHS, |
10424 | ExprValueKind &VK, ExprObjectKind &OK, SourceLocation QuestionLoc); |
10425 | QualType CXXCheckConditionalOperands( // C++ 5.16 |
10426 | ExprResult &cond, ExprResult &lhs, ExprResult &rhs, |
10427 | ExprValueKind &VK, ExprObjectKind &OK, SourceLocation questionLoc); |
10428 | QualType FindCompositePointerType(SourceLocation Loc, Expr *&E1, Expr *&E2, |
10429 | bool ConvertArgs = true); |
10430 | QualType FindCompositePointerType(SourceLocation Loc, |
10431 | ExprResult &E1, ExprResult &E2, |
10432 | bool ConvertArgs = true) { |
10433 | Expr *E1Tmp = E1.get(), *E2Tmp = E2.get(); |
10434 | QualType Composite = |
10435 | FindCompositePointerType(Loc, E1Tmp, E2Tmp, ConvertArgs); |
10436 | E1 = E1Tmp; |
10437 | E2 = E2Tmp; |
10438 | return Composite; |
10439 | } |
10440 | |
10441 | QualType FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, |
10442 | SourceLocation QuestionLoc); |
10443 | |
10444 | bool DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, |
10445 | SourceLocation QuestionLoc); |
10446 | |
10447 | void DiagnoseAlwaysNonNullPointer(Expr *E, |
10448 | Expr::NullPointerConstantKind NullType, |
10449 | bool IsEqual, SourceRange Range); |
10450 | |
10451 | /// type checking for vector binary operators. |
10452 | QualType CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, |
10453 | SourceLocation Loc, bool IsCompAssign, |
10454 | bool AllowBothBool, bool AllowBoolConversion); |
10455 | QualType GetSignedVectorType(QualType V); |
10456 | QualType CheckVectorCompareOperands(ExprResult &LHS, ExprResult &RHS, |
10457 | SourceLocation Loc, |
10458 | BinaryOperatorKind Opc); |
10459 | QualType CheckVectorLogicalOperands(ExprResult &LHS, ExprResult &RHS, |
10460 | SourceLocation Loc); |
10461 | |
10462 | bool areLaxCompatibleVectorTypes(QualType srcType, QualType destType); |
10463 | bool isLaxVectorConversion(QualType srcType, QualType destType); |
10464 | |
10465 | /// type checking declaration initializers (C99 6.7.8) |
10466 | bool CheckForConstantInitializer(Expr *e, QualType t); |
10467 | |
10468 | // type checking C++ declaration initializers (C++ [dcl.init]). |
10469 | |
10470 | /// ReferenceCompareResult - Expresses the result of comparing two |
10471 | /// types (cv1 T1 and cv2 T2) to determine their compatibility for the |
10472 | /// purposes of initialization by reference (C++ [dcl.init.ref]p4). |
10473 | enum ReferenceCompareResult { |
10474 | /// Ref_Incompatible - The two types are incompatible, so direct |
10475 | /// reference binding is not possible. |
10476 | Ref_Incompatible = 0, |
10477 | /// Ref_Related - The two types are reference-related, which means |
10478 | /// that their unqualified forms (T1 and T2) are either the same |
10479 | /// or T1 is a base class of T2. |
10480 | Ref_Related, |
10481 | /// Ref_Compatible - The two types are reference-compatible. |
10482 | Ref_Compatible |
10483 | }; |
10484 | |
10485 | ReferenceCompareResult |
10486 | CompareReferenceRelationship(SourceLocation Loc, QualType T1, QualType T2, |
10487 | bool &DerivedToBase, bool &ObjCConversion, |
10488 | bool &ObjCLifetimeConversion, |
10489 | bool &FunctionConversion); |
10490 | |
10491 | ExprResult checkUnknownAnyCast(SourceRange TypeRange, QualType CastType, |
10492 | Expr *CastExpr, CastKind &CastKind, |
10493 | ExprValueKind &VK, CXXCastPath &Path); |
10494 | |
10495 | /// Force an expression with unknown-type to an expression of the |
10496 | /// given type. |
10497 | ExprResult forceUnknownAnyToType(Expr *E, QualType ToType); |
10498 | |
10499 | /// Type-check an expression that's being passed to an |
10500 | /// __unknown_anytype parameter. |
10501 | ExprResult checkUnknownAnyArg(SourceLocation callLoc, |
10502 | Expr *result, QualType ¶mType); |
10503 | |
10504 | // CheckVectorCast - check type constraints for vectors. |
10505 | // Since vectors are an extension, there are no C standard reference for this. |
10506 | // We allow casting between vectors and integer datatypes of the same size. |
10507 | // returns true if the cast is invalid |
10508 | bool CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, |
10509 | CastKind &Kind); |
10510 | |
10511 | /// Prepare `SplattedExpr` for a vector splat operation, adding |
10512 | /// implicit casts if necessary. |
10513 | ExprResult prepareVectorSplat(QualType VectorTy, Expr *SplattedExpr); |
10514 | |
10515 | // CheckExtVectorCast - check type constraints for extended vectors. |
10516 | // Since vectors are an extension, there are no C standard reference for this. |
10517 | // We allow casting between vectors and integer datatypes of the same size, |
10518 | // or vectors and the element type of that vector. |
10519 | // returns the cast expr |
10520 | ExprResult CheckExtVectorCast(SourceRange R, QualType DestTy, Expr *CastExpr, |
10521 | CastKind &Kind); |
10522 | |
10523 | ExprResult BuildCXXFunctionalCastExpr(TypeSourceInfo *TInfo, QualType Type, |
10524 | SourceLocation LParenLoc, |
10525 | Expr *CastExpr, |
10526 | SourceLocation RParenLoc); |
10527 | |
10528 | enum ARCConversionResult { ACR_okay, ACR_unbridged, ACR_error }; |
10529 | |
10530 | /// Checks for invalid conversions and casts between |
10531 | /// retainable pointers and other pointer kinds for ARC and Weak. |
10532 | ARCConversionResult CheckObjCConversion(SourceRange castRange, |
10533 | QualType castType, Expr *&op, |
10534 | CheckedConversionKind CCK, |
10535 | bool Diagnose = true, |
10536 | bool DiagnoseCFAudited = false, |
10537 | BinaryOperatorKind Opc = BO_PtrMemD |
10538 | ); |
10539 | |
10540 | Expr *stripARCUnbridgedCast(Expr *e); |
10541 | void diagnoseARCUnbridgedCast(Expr *e); |
10542 | |
10543 | bool CheckObjCARCUnavailableWeakConversion(QualType castType, |
10544 | QualType ExprType); |
10545 | |
10546 | /// checkRetainCycles - Check whether an Objective-C message send |
10547 | /// might create an obvious retain cycle. |
10548 | void checkRetainCycles(ObjCMessageExpr *msg); |
10549 | void checkRetainCycles(Expr *receiver, Expr *argument); |
10550 | void checkRetainCycles(VarDecl *Var, Expr *Init); |
10551 | |
10552 | /// checkUnsafeAssigns - Check whether +1 expr is being assigned |
10553 | /// to weak/__unsafe_unretained type. |
10554 | bool checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS); |
10555 | |
10556 | /// checkUnsafeExprAssigns - Check whether +1 expr is being assigned |
10557 | /// to weak/__unsafe_unretained expression. |
10558 | void checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS); |
10559 | |
10560 | /// CheckMessageArgumentTypes - Check types in an Obj-C message send. |
10561 | /// \param Method - May be null. |
10562 | /// \param [out] ReturnType - The return type of the send. |
10563 | /// \return true iff there were any incompatible types. |
10564 | bool CheckMessageArgumentTypes(const Expr *Receiver, QualType ReceiverType, |
10565 | MultiExprArg Args, Selector Sel, |
10566 | ArrayRef<SourceLocation> SelectorLocs, |
10567 | ObjCMethodDecl *Method, bool isClassMessage, |
10568 | bool isSuperMessage, SourceLocation lbrac, |
10569 | SourceLocation rbrac, SourceRange RecRange, |
10570 | QualType &ReturnType, ExprValueKind &VK); |
10571 | |
10572 | /// Determine the result of a message send expression based on |
10573 | /// the type of the receiver, the method expected to receive the message, |
10574 | /// and the form of the message send. |
10575 | QualType getMessageSendResultType(const Expr *Receiver, QualType ReceiverType, |
10576 | ObjCMethodDecl *Method, bool isClassMessage, |
10577 | bool isSuperMessage); |
10578 | |
10579 | /// If the given expression involves a message send to a method |
10580 | /// with a related result type, emit a note describing what happened. |
10581 | void EmitRelatedResultTypeNote(const Expr *E); |
10582 | |
10583 | /// Given that we had incompatible pointer types in a return |
10584 | /// statement, check whether we're in a method with a related result |
10585 | /// type, and if so, emit a note describing what happened. |
10586 | void EmitRelatedResultTypeNoteForReturn(QualType destType); |
10587 | |
10588 | class ConditionResult { |
10589 | Decl *ConditionVar; |
10590 | FullExprArg Condition; |
10591 | bool Invalid; |
10592 | bool HasKnownValue; |
10593 | bool KnownValue; |
10594 | |
10595 | friend class Sema; |
10596 | ConditionResult(Sema &S, Decl *ConditionVar, FullExprArg Condition, |
10597 | bool IsConstexpr) |
10598 | : ConditionVar(ConditionVar), Condition(Condition), Invalid(false), |
10599 | HasKnownValue(IsConstexpr && Condition.get() && |
10600 | !Condition.get()->isValueDependent()), |
10601 | KnownValue(HasKnownValue && |
10602 | !!Condition.get()->EvaluateKnownConstInt(S.Context)) {} |
10603 | explicit ConditionResult(bool Invalid) |
10604 | : ConditionVar(nullptr), Condition(nullptr), Invalid(Invalid), |
10605 | HasKnownValue(false), KnownValue(false) {} |
10606 | |
10607 | public: |
10608 | ConditionResult() : ConditionResult(false) {} |
10609 | bool isInvalid() const { return Invalid; } |
10610 | std::pair<VarDecl *, Expr *> get() const { |
10611 | return std::make_pair(cast_or_null<VarDecl>(ConditionVar), |
10612 | Condition.get()); |
10613 | } |
10614 | llvm::Optional<bool> getKnownValue() const { |
10615 | if (!HasKnownValue) |
10616 | return None; |
10617 | return KnownValue; |
10618 | } |
10619 | }; |
10620 | static ConditionResult ConditionError() { return ConditionResult(true); } |
10621 | |
10622 | enum class ConditionKind { |
10623 | Boolean, ///< A boolean condition, from 'if', 'while', 'for', or 'do'. |
10624 | ConstexprIf, ///< A constant boolean condition from 'if constexpr'. |
10625 | Switch ///< An integral condition for a 'switch' statement. |
10626 | }; |
10627 | |
10628 | ConditionResult ActOnCondition(Scope *S, SourceLocation Loc, |
10629 | Expr *SubExpr, ConditionKind CK); |
10630 | |
10631 | ConditionResult ActOnConditionVariable(Decl *ConditionVar, |
10632 | SourceLocation StmtLoc, |
10633 | ConditionKind CK); |
10634 | |
10635 | DeclResult ActOnCXXConditionDeclaration(Scope *S, Declarator &D); |
10636 | |
10637 | ExprResult CheckConditionVariable(VarDecl *ConditionVar, |
10638 | SourceLocation StmtLoc, |
10639 | ConditionKind CK); |
10640 | ExprResult CheckSwitchCondition(SourceLocation SwitchLoc, Expr *Cond); |
10641 | |
10642 | /// CheckBooleanCondition - Diagnose problems involving the use of |
10643 | /// the given expression as a boolean condition (e.g. in an if |
10644 | /// statement). Also performs the standard function and array |
10645 | /// decays, possibly changing the input variable. |
10646 | /// |
10647 | /// \param Loc - A location associated with the condition, e.g. the |
10648 | /// 'if' keyword. |
10649 | /// \return true iff there were any errors |
10650 | ExprResult CheckBooleanCondition(SourceLocation Loc, Expr *E, |
10651 | bool IsConstexpr = false); |
10652 | |
10653 | /// ActOnExplicitBoolSpecifier - Build an ExplicitSpecifier from an expression |
10654 | /// found in an explicit(bool) specifier. |
10655 | ExplicitSpecifier ActOnExplicitBoolSpecifier(Expr *E); |
10656 | |
10657 | /// tryResolveExplicitSpecifier - Attempt to resolve the explict specifier. |
10658 | /// Returns true if the explicit specifier is now resolved. |
10659 | bool tryResolveExplicitSpecifier(ExplicitSpecifier &ExplicitSpec); |
10660 | |
10661 | /// DiagnoseAssignmentAsCondition - Given that an expression is |
10662 | /// being used as a boolean condition, warn if it's an assignment. |
10663 | void DiagnoseAssignmentAsCondition(Expr *E); |
10664 | |
10665 | /// Redundant parentheses over an equality comparison can indicate |
10666 | /// that the user intended an assignment used as condition. |
10667 | void DiagnoseEqualityWithExtraParens(ParenExpr *ParenE); |
10668 | |
10669 | /// CheckCXXBooleanCondition - Returns true if conversion to bool is invalid. |
10670 | ExprResult CheckCXXBooleanCondition(Expr *CondExpr, bool IsConstexpr = false); |
10671 | |
10672 | /// ConvertIntegerToTypeWarnOnOverflow - Convert the specified APInt to have |
10673 | /// the specified width and sign. If an overflow occurs, detect it and emit |
10674 | /// the specified diagnostic. |
10675 | void ConvertIntegerToTypeWarnOnOverflow(llvm::APSInt &OldVal, |
10676 | unsigned NewWidth, bool NewSign, |
10677 | SourceLocation Loc, unsigned DiagID); |
10678 | |
10679 | /// Checks that the Objective-C declaration is declared in the global scope. |
10680 | /// Emits an error and marks the declaration as invalid if it's not declared |
10681 | /// in the global scope. |
10682 | bool CheckObjCDeclScope(Decl *D); |
10683 | |
10684 | /// Abstract base class used for diagnosing integer constant |
10685 | /// expression violations. |
10686 | class VerifyICEDiagnoser { |
10687 | public: |
10688 | bool Suppress; |
10689 | |
10690 | VerifyICEDiagnoser(bool Suppress = false) : Suppress(Suppress) { } |
10691 | |
10692 | virtual void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) =0; |
10693 | virtual void diagnoseFold(Sema &S, SourceLocation Loc, SourceRange SR); |
10694 | virtual ~VerifyICEDiagnoser() { } |
10695 | }; |
10696 | |
10697 | /// VerifyIntegerConstantExpression - Verifies that an expression is an ICE, |
10698 | /// and reports the appropriate diagnostics. Returns false on success. |
10699 | /// Can optionally return the value of the expression. |
10700 | ExprResult VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, |
10701 | VerifyICEDiagnoser &Diagnoser, |
10702 | bool AllowFold = true); |
10703 | ExprResult VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, |
10704 | unsigned DiagID, |
10705 | bool AllowFold = true); |
10706 | ExprResult VerifyIntegerConstantExpression(Expr *E, |
10707 | llvm::APSInt *Result = nullptr); |
10708 | |
10709 | /// VerifyBitField - verifies that a bit field expression is an ICE and has |
10710 | /// the correct width, and that the field type is valid. |
10711 | /// Returns false on success. |
10712 | /// Can optionally return whether the bit-field is of width 0 |
10713 | ExprResult VerifyBitField(SourceLocation FieldLoc, IdentifierInfo *FieldName, |
10714 | QualType FieldTy, bool IsMsStruct, |
10715 | Expr *BitWidth, bool *ZeroWidth = nullptr); |
10716 | |
10717 | private: |
10718 | unsigned ForceCUDAHostDeviceDepth = 0; |
10719 | |
10720 | public: |
10721 | /// Increments our count of the number of times we've seen a pragma forcing |
10722 | /// functions to be __host__ __device__. So long as this count is greater |
10723 | /// than zero, all functions encountered will be __host__ __device__. |
10724 | void PushForceCUDAHostDevice(); |
10725 | |
10726 | /// Decrements our count of the number of times we've seen a pragma forcing |
10727 | /// functions to be __host__ __device__. Returns false if the count is 0 |
10728 | /// before incrementing, so you can emit an error. |
10729 | bool PopForceCUDAHostDevice(); |
10730 | |
10731 | /// Diagnostics that are emitted only if we discover that the given function |
10732 | /// must be codegen'ed. Because handling these correctly adds overhead to |
10733 | /// compilation, this is currently only enabled for CUDA compilations. |
10734 | llvm::DenseMap<CanonicalDeclPtr<FunctionDecl>, |
10735 | std::vector<PartialDiagnosticAt>> |
10736 | DeviceDeferredDiags; |
10737 | |
10738 | /// A pair of a canonical FunctionDecl and a SourceLocation. When used as the |
10739 | /// key in a hashtable, both the FD and location are hashed. |
10740 | struct FunctionDeclAndLoc { |
10741 | CanonicalDeclPtr<FunctionDecl> FD; |
10742 | SourceLocation Loc; |
10743 | }; |
10744 | |
10745 | /// FunctionDecls and SourceLocations for which CheckCUDACall has emitted a |
10746 | /// (maybe deferred) "bad call" diagnostic. We use this to avoid emitting the |
10747 | /// same deferred diag twice. |
10748 | llvm::DenseSet<FunctionDeclAndLoc> LocsWithCUDACallDiags; |
10749 | |
10750 | /// An inverse call graph, mapping known-emitted functions to one of their |
10751 | /// known-emitted callers (plus the location of the call). |
10752 | /// |
10753 | /// Functions that we can tell a priori must be emitted aren't added to this |
10754 | /// map. |
10755 | llvm::DenseMap</* Callee = */ CanonicalDeclPtr<FunctionDecl>, |
10756 | /* Caller = */ FunctionDeclAndLoc> |
10757 | DeviceKnownEmittedFns; |
10758 | |
10759 | /// A partial call graph maintained during CUDA/OpenMP device code compilation |
10760 | /// to support deferred diagnostics. |
10761 | /// |
10762 | /// Functions are only added here if, at the time they're considered, they are |
10763 | /// not known-emitted. As soon as we discover that a function is |
10764 | /// known-emitted, we remove it and everything it transitively calls from this |
10765 | /// set and add those functions to DeviceKnownEmittedFns. |
10766 | llvm::DenseMap</* Caller = */ CanonicalDeclPtr<FunctionDecl>, |
10767 | /* Callees = */ llvm::MapVector<CanonicalDeclPtr<FunctionDecl>, |
10768 | SourceLocation>> |
10769 | DeviceCallGraph; |
10770 | |
10771 | /// Diagnostic builder for CUDA/OpenMP devices errors which may or may not be |
10772 | /// deferred. |
10773 | /// |
10774 | /// In CUDA, there exist constructs (e.g. variable-length arrays, try/catch) |
10775 | /// which are not allowed to appear inside __device__ functions and are |
10776 | /// allowed to appear in __host__ __device__ functions only if the host+device |
10777 | /// function is never codegen'ed. |
10778 | /// |
10779 | /// To handle this, we use the notion of "deferred diagnostics", where we |
10780 | /// attach a diagnostic to a FunctionDecl that's emitted iff it's codegen'ed. |
10781 | /// |
10782 | /// This class lets you emit either a regular diagnostic, a deferred |
10783 | /// diagnostic, or no diagnostic at all, according to an argument you pass to |
10784 | /// its constructor, thus simplifying the process of creating these "maybe |
10785 | /// deferred" diagnostics. |
10786 | class DeviceDiagBuilder { |
10787 | public: |
10788 | enum Kind { |
10789 | /// Emit no diagnostics. |
10790 | K_Nop, |
10791 | /// Emit the diagnostic immediately (i.e., behave like Sema::Diag()). |
10792 | K_Immediate, |
10793 | /// Emit the diagnostic immediately, and, if it's a warning or error, also |
10794 | /// emit a call stack showing how this function can be reached by an a |
10795 | /// priori known-emitted function. |
10796 | K_ImmediateWithCallStack, |
10797 | /// Create a deferred diagnostic, which is emitted only if the function |
10798 | /// it's attached to is codegen'ed. Also emit a call stack as with |
10799 | /// K_ImmediateWithCallStack. |
10800 | K_Deferred |
10801 | }; |
10802 | |
10803 | DeviceDiagBuilder(Kind K, SourceLocation Loc, unsigned DiagID, |
10804 | FunctionDecl *Fn, Sema &S); |
10805 | DeviceDiagBuilder(DeviceDiagBuilder &&D); |
10806 | DeviceDiagBuilder(const DeviceDiagBuilder &) = default; |
10807 | ~DeviceDiagBuilder(); |
10808 | |
10809 | /// Convertible to bool: True if we immediately emitted an error, false if |
10810 | /// we didn't emit an error or we created a deferred error. |
10811 | /// |
10812 | /// Example usage: |
10813 | /// |
10814 | /// if (DeviceDiagBuilder(...) << foo << bar) |
10815 | /// return ExprError(); |
10816 | /// |
10817 | /// But see CUDADiagIfDeviceCode() and CUDADiagIfHostCode() -- you probably |
10818 | /// want to use these instead of creating a DeviceDiagBuilder yourself. |
10819 | operator bool() const { return ImmediateDiag.hasValue(); } |
10820 | |
10821 | template <typename T> |
10822 | friend const DeviceDiagBuilder &operator<<(const DeviceDiagBuilder &Diag, |
10823 | const T &Value) { |
10824 | if (Diag.ImmediateDiag.hasValue()) |
10825 | *Diag.ImmediateDiag << Value; |
10826 | else if (Diag.PartialDiagId.hasValue()) |
10827 | Diag.S.DeviceDeferredDiags[Diag.Fn][*Diag.PartialDiagId].second |
10828 | << Value; |
10829 | return Diag; |
10830 | } |
10831 | |
10832 | private: |
10833 | Sema &S; |
10834 | SourceLocation Loc; |
10835 | unsigned DiagID; |
10836 | FunctionDecl *Fn; |
10837 | bool ShowCallStack; |
10838 | |
10839 | // Invariant: At most one of these Optionals has a value. |
10840 | // FIXME: Switch these to a Variant once that exists. |
10841 | llvm::Optional<SemaDiagnosticBuilder> ImmediateDiag; |
10842 | llvm::Optional<unsigned> PartialDiagId; |
10843 | }; |
10844 | |
10845 | /// Indicate that this function (and thus everything it transtively calls) |
10846 | /// will be codegen'ed, and emit any deferred diagnostics on this function and |
10847 | /// its (transitive) callees. |
10848 | void markKnownEmitted( |
10849 | Sema &S, FunctionDecl *OrigCaller, FunctionDecl *OrigCallee, |
10850 | SourceLocation OrigLoc, |
10851 | const llvm::function_ref<bool(Sema &, FunctionDecl *)> IsKnownEmitted); |
10852 | |
10853 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current context |
10854 | /// is "used as device code". |
10855 | /// |
10856 | /// - If CurContext is a __host__ function, does not emit any diagnostics. |
10857 | /// - If CurContext is a __device__ or __global__ function, emits the |
10858 | /// diagnostics immediately. |
10859 | /// - If CurContext is a __host__ __device__ function and we are compiling for |
10860 | /// the device, creates a diagnostic which is emitted if and when we realize |
10861 | /// that the function will be codegen'ed. |
10862 | /// |
10863 | /// Example usage: |
10864 | /// |
10865 | /// // Variable-length arrays are not allowed in CUDA device code. |
10866 | /// if (CUDADiagIfDeviceCode(Loc, diag::err_cuda_vla) << CurrentCUDATarget()) |
10867 | /// return ExprError(); |
10868 | /// // Otherwise, continue parsing as normal. |
10869 | DeviceDiagBuilder CUDADiagIfDeviceCode(SourceLocation Loc, unsigned DiagID); |
10870 | |
10871 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current context |
10872 | /// is "used as host code". |
10873 | /// |
10874 | /// Same as CUDADiagIfDeviceCode, with "host" and "device" switched. |
10875 | DeviceDiagBuilder CUDADiagIfHostCode(SourceLocation Loc, unsigned DiagID); |
10876 | |
10877 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current |
10878 | /// context is "used as device code". |
10879 | /// |
10880 | /// - If CurContext is a `declare target` function or it is known that the |
10881 | /// function is emitted for the device, emits the diagnostics immediately. |
10882 | /// - If CurContext is a non-`declare target` function and we are compiling |
10883 | /// for the device, creates a diagnostic which is emitted if and when we |
10884 | /// realize that the function will be codegen'ed. |
10885 | /// |
10886 | /// Example usage: |
10887 | /// |
10888 | /// // Variable-length arrays are not allowed in NVPTX device code. |
10889 | /// if (diagIfOpenMPDeviceCode(Loc, diag::err_vla_unsupported)) |
10890 | /// return ExprError(); |
10891 | /// // Otherwise, continue parsing as normal. |
10892 | DeviceDiagBuilder diagIfOpenMPDeviceCode(SourceLocation Loc, unsigned DiagID); |
10893 | |
10894 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current |
10895 | /// context is "used as host code". |
10896 | /// |
10897 | /// - If CurContext is a `declare target` function or it is known that the |
10898 | /// function is emitted for the host, emits the diagnostics immediately. |
10899 | /// - If CurContext is a non-host function, just ignore it. |
10900 | /// |
10901 | /// Example usage: |
10902 | /// |
10903 | /// // Variable-length arrays are not allowed in NVPTX device code. |
10904 | /// if (diagIfOpenMPHostode(Loc, diag::err_vla_unsupported)) |
10905 | /// return ExprError(); |
10906 | /// // Otherwise, continue parsing as normal. |
10907 | DeviceDiagBuilder diagIfOpenMPHostCode(SourceLocation Loc, unsigned DiagID); |
10908 | |
10909 | DeviceDiagBuilder targetDiag(SourceLocation Loc, unsigned DiagID); |
10910 | |
10911 | enum CUDAFunctionTarget { |
10912 | CFT_Device, |
10913 | CFT_Global, |
10914 | CFT_Host, |
10915 | CFT_HostDevice, |
10916 | CFT_InvalidTarget |
10917 | }; |
10918 | |
10919 | /// Determines whether the given function is a CUDA device/host/kernel/etc. |
10920 | /// function. |
10921 | /// |
10922 | /// Use this rather than examining the function's attributes yourself -- you |
10923 | /// will get it wrong. Returns CFT_Host if D is null. |
10924 | CUDAFunctionTarget IdentifyCUDATarget(const FunctionDecl *D, |
10925 | bool IgnoreImplicitHDAttr = false); |
10926 | CUDAFunctionTarget IdentifyCUDATarget(const ParsedAttributesView &Attrs); |
10927 | |
10928 | /// Gets the CUDA target for the current context. |
10929 | CUDAFunctionTarget CurrentCUDATarget() { |
10930 | return IdentifyCUDATarget(dyn_cast<FunctionDecl>(CurContext)); |
10931 | } |
10932 | |
10933 | // CUDA function call preference. Must be ordered numerically from |
10934 | // worst to best. |
10935 | enum CUDAFunctionPreference { |
10936 | CFP_Never, // Invalid caller/callee combination. |
10937 | CFP_WrongSide, // Calls from host-device to host or device |
10938 | // function that do not match current compilation |
10939 | // mode. |
10940 | CFP_HostDevice, // Any calls to host/device functions. |
10941 | CFP_SameSide, // Calls from host-device to host or device |
10942 | // function matching current compilation mode. |
10943 | CFP_Native, // host-to-host or device-to-device calls. |
10944 | }; |
10945 | |
10946 | /// Identifies relative preference of a given Caller/Callee |
10947 | /// combination, based on their host/device attributes. |
10948 | /// \param Caller function which needs address of \p Callee. |
10949 | /// nullptr in case of global context. |
10950 | /// \param Callee target function |
10951 | /// |
10952 | /// \returns preference value for particular Caller/Callee combination. |
10953 | CUDAFunctionPreference IdentifyCUDAPreference(const FunctionDecl *Caller, |
10954 | const FunctionDecl *Callee); |
10955 | |
10956 | /// Determines whether Caller may invoke Callee, based on their CUDA |
10957 | /// host/device attributes. Returns false if the call is not allowed. |
10958 | /// |
10959 | /// Note: Will return true for CFP_WrongSide calls. These may appear in |
10960 | /// semantically correct CUDA programs, but only if they're never codegen'ed. |
10961 | bool IsAllowedCUDACall(const FunctionDecl *Caller, |
10962 | const FunctionDecl *Callee) { |
10963 | return IdentifyCUDAPreference(Caller, Callee) != CFP_Never; |
10964 | } |
10965 | |
10966 | /// May add implicit CUDAHostAttr and CUDADeviceAttr attributes to FD, |
10967 | /// depending on FD and the current compilation settings. |
10968 | void maybeAddCUDAHostDeviceAttrs(FunctionDecl *FD, |
10969 | const LookupResult &Previous); |
10970 | |
10971 | public: |
10972 | /// Check whether we're allowed to call Callee from the current context. |
10973 | /// |
10974 | /// - If the call is never allowed in a semantically-correct program |
10975 | /// (CFP_Never), emits an error and returns false. |
10976 | /// |
10977 | /// - If the call is allowed in semantically-correct programs, but only if |
10978 | /// it's never codegen'ed (CFP_WrongSide), creates a deferred diagnostic to |
10979 | /// be emitted if and when the caller is codegen'ed, and returns true. |
10980 | /// |
10981 | /// Will only create deferred diagnostics for a given SourceLocation once, |
10982 | /// so you can safely call this multiple times without generating duplicate |
10983 | /// deferred errors. |
10984 | /// |
10985 | /// - Otherwise, returns true without emitting any diagnostics. |
10986 | bool CheckCUDACall(SourceLocation Loc, FunctionDecl *Callee); |
10987 | |
10988 | /// Set __device__ or __host__ __device__ attributes on the given lambda |
10989 | /// operator() method. |
10990 | /// |
10991 | /// CUDA lambdas declared inside __device__ or __global__ functions inherit |
10992 | /// the __device__ attribute. Similarly, lambdas inside __host__ __device__ |
10993 | /// functions become __host__ __device__ themselves. |
10994 | void CUDASetLambdaAttrs(CXXMethodDecl *Method); |
10995 | |
10996 | /// Finds a function in \p Matches with highest calling priority |
10997 | /// from \p Caller context and erases all functions with lower |
10998 | /// calling priority. |
10999 | void EraseUnwantedCUDAMatches( |
11000 | const FunctionDecl *Caller, |
11001 | SmallVectorImpl<std::pair<DeclAccessPair, FunctionDecl *>> &Matches); |
11002 | |
11003 | /// Given a implicit special member, infer its CUDA target from the |
11004 | /// calls it needs to make to underlying base/field special members. |
11005 | /// \param ClassDecl the class for which the member is being created. |
11006 | /// \param CSM the kind of special member. |
11007 | /// \param MemberDecl the special member itself. |
11008 | /// \param ConstRHS true if this is a copy operation with a const object on |
11009 | /// its RHS. |
11010 | /// \param Diagnose true if this call should emit diagnostics. |
11011 | /// \return true if there was an error inferring. |
11012 | /// The result of this call is implicit CUDA target attribute(s) attached to |
11013 | /// the member declaration. |
11014 | bool inferCUDATargetForImplicitSpecialMember(CXXRecordDecl *ClassDecl, |
11015 | CXXSpecialMember CSM, |
11016 | CXXMethodDecl *MemberDecl, |
11017 | bool ConstRHS, |
11018 | bool Diagnose); |
11019 | |
11020 | /// \return true if \p CD can be considered empty according to CUDA |
11021 | /// (E.2.3.1 in CUDA 7.5 Programming guide). |
11022 | bool isEmptyCudaConstructor(SourceLocation Loc, CXXConstructorDecl *CD); |
11023 | bool isEmptyCudaDestructor(SourceLocation Loc, CXXDestructorDecl *CD); |
11024 | |
11025 | // \brief Checks that initializers of \p Var satisfy CUDA restrictions. In |
11026 | // case of error emits appropriate diagnostic and invalidates \p Var. |
11027 | // |
11028 | // \details CUDA allows only empty constructors as initializers for global |
11029 | // variables (see E.2.3.1, CUDA 7.5). The same restriction also applies to all |
11030 | // __shared__ variables whether they are local or not (they all are implicitly |
11031 | // static in CUDA). One exception is that CUDA allows constant initializers |
11032 | // for __constant__ and __device__ variables. |
11033 | void checkAllowedCUDAInitializer(VarDecl *VD); |
11034 | |
11035 | /// Check whether NewFD is a valid overload for CUDA. Emits |
11036 | /// diagnostics and invalidates NewFD if not. |
11037 | void checkCUDATargetOverload(FunctionDecl *NewFD, |
11038 | const LookupResult &Previous); |
11039 | /// Copies target attributes from the template TD to the function FD. |
11040 | void inheritCUDATargetAttrs(FunctionDecl *FD, const FunctionTemplateDecl &TD); |
11041 | |
11042 | /// Returns the name of the launch configuration function. This is the name |
11043 | /// of the function that will be called to configure kernel call, with the |
11044 | /// parameters specified via <<<>>>. |
11045 | std::string getCudaConfigureFuncName() const; |
11046 | |
11047 | /// \name Code completion |
11048 | //@{ |
11049 | /// Describes the context in which code completion occurs. |
11050 | enum ParserCompletionContext { |
11051 | /// Code completion occurs at top-level or namespace context. |
11052 | PCC_Namespace, |
11053 | /// Code completion occurs within a class, struct, or union. |
11054 | PCC_Class, |
11055 | /// Code completion occurs within an Objective-C interface, protocol, |
11056 | /// or category. |
11057 | PCC_ObjCInterface, |
11058 | /// Code completion occurs within an Objective-C implementation or |
11059 | /// category implementation |
11060 | PCC_ObjCImplementation, |
11061 | /// Code completion occurs within the list of instance variables |
11062 | /// in an Objective-C interface, protocol, category, or implementation. |
11063 | PCC_ObjCInstanceVariableList, |
11064 | /// Code completion occurs following one or more template |
11065 | /// headers. |
11066 | PCC_Template, |
11067 | /// Code completion occurs following one or more template |
11068 | /// headers within a class. |
11069 | PCC_MemberTemplate, |
11070 | /// Code completion occurs within an expression. |
11071 | PCC_Expression, |
11072 | /// Code completion occurs within a statement, which may |
11073 | /// also be an expression or a declaration. |
11074 | PCC_Statement, |
11075 | /// Code completion occurs at the beginning of the |
11076 | /// initialization statement (or expression) in a for loop. |
11077 | PCC_ForInit, |
11078 | /// Code completion occurs within the condition of an if, |
11079 | /// while, switch, or for statement. |
11080 | PCC_Condition, |
11081 | /// Code completion occurs within the body of a function on a |
11082 | /// recovery path, where we do not have a specific handle on our position |
11083 | /// in the grammar. |
11084 | PCC_RecoveryInFunction, |
11085 | /// Code completion occurs where only a type is permitted. |
11086 | PCC_Type, |
11087 | /// Code completion occurs in a parenthesized expression, which |
11088 | /// might also be a type cast. |
11089 | PCC_ParenthesizedExpression, |
11090 | /// Code completion occurs within a sequence of declaration |
11091 | /// specifiers within a function, method, or block. |
11092 | PCC_LocalDeclarationSpecifiers |
11093 | }; |
11094 | |
11095 | void CodeCompleteModuleImport(SourceLocation ImportLoc, ModuleIdPath Path); |
11096 | void CodeCompleteOrdinaryName(Scope *S, |
11097 | ParserCompletionContext CompletionContext); |
11098 | void CodeCompleteDeclSpec(Scope *S, DeclSpec &DS, |
11099 | bool AllowNonIdentifiers, |
11100 | bool AllowNestedNameSpecifiers); |
11101 | |
11102 | struct CodeCompleteExpressionData; |
11103 | void CodeCompleteExpression(Scope *S, |
11104 | const CodeCompleteExpressionData &Data); |
11105 | void CodeCompleteExpression(Scope *S, QualType PreferredType, |
11106 | bool IsParenthesized = false); |
11107 | void CodeCompleteMemberReferenceExpr(Scope *S, Expr *Base, Expr *OtherOpBase, |
11108 | SourceLocation OpLoc, bool IsArrow, |
11109 | bool IsBaseExprStatement, |
11110 | QualType PreferredType); |
11111 | void CodeCompletePostfixExpression(Scope *S, ExprResult LHS, |
11112 | QualType PreferredType); |
11113 | void CodeCompleteTag(Scope *S, unsigned TagSpec); |
11114 | void CodeCompleteTypeQualifiers(DeclSpec &DS); |
11115 | void CodeCompleteFunctionQualifiers(DeclSpec &DS, Declarator &D, |
11116 | const VirtSpecifiers *VS = nullptr); |
11117 | void CodeCompleteBracketDeclarator(Scope *S); |
11118 | void CodeCompleteCase(Scope *S); |
11119 | /// Reports signatures for a call to CodeCompleteConsumer and returns the |
11120 | /// preferred type for the current argument. Returned type can be null. |
11121 | QualType ProduceCallSignatureHelp(Scope *S, Expr *Fn, ArrayRef<Expr *> Args, |
11122 | SourceLocation OpenParLoc); |
11123 | QualType ProduceConstructorSignatureHelp(Scope *S, QualType Type, |
11124 | SourceLocation Loc, |
11125 | ArrayRef<Expr *> Args, |
11126 | SourceLocation OpenParLoc); |
11127 | QualType ProduceCtorInitMemberSignatureHelp(Scope *S, Decl *ConstructorDecl, |
11128 | CXXScopeSpec SS, |
11129 | ParsedType TemplateTypeTy, |
11130 | ArrayRef<Expr *> ArgExprs, |
11131 | IdentifierInfo *II, |
11132 | SourceLocation OpenParLoc); |
11133 | void CodeCompleteInitializer(Scope *S, Decl *D); |
11134 | void CodeCompleteAfterIf(Scope *S); |
11135 | |
11136 | void CodeCompleteQualifiedId(Scope *S, CXXScopeSpec &SS, bool EnteringContext, |
11137 | bool IsUsingDeclaration, QualType BaseType, |
11138 | QualType PreferredType); |
11139 | void CodeCompleteUsing(Scope *S); |
11140 | void CodeCompleteUsingDirective(Scope *S); |
11141 | void CodeCompleteNamespaceDecl(Scope *S); |
11142 | void CodeCompleteNamespaceAliasDecl(Scope *S); |
11143 | void CodeCompleteOperatorName(Scope *S); |
11144 | void CodeCompleteConstructorInitializer( |
11145 | Decl *Constructor, |
11146 | ArrayRef<CXXCtorInitializer *> Initializers); |
11147 | |
11148 | void CodeCompleteLambdaIntroducer(Scope *S, LambdaIntroducer &Intro, |
11149 | bool AfterAmpersand); |
11150 | |
11151 | void CodeCompleteObjCAtDirective(Scope *S); |
11152 | void CodeCompleteObjCAtVisibility(Scope *S); |
11153 | void CodeCompleteObjCAtStatement(Scope *S); |
11154 | void CodeCompleteObjCAtExpression(Scope *S); |
11155 | void CodeCompleteObjCPropertyFlags(Scope *S, ObjCDeclSpec &ODS); |
11156 | void CodeCompleteObjCPropertyGetter(Scope *S); |
11157 | void CodeCompleteObjCPropertySetter(Scope *S); |
11158 | void CodeCompleteObjCPassingType(Scope *S, ObjCDeclSpec &DS, |
11159 | bool IsParameter); |
11160 | void CodeCompleteObjCMessageReceiver(Scope *S); |
11161 | void CodeCompleteObjCSuperMessage(Scope *S, SourceLocation SuperLoc, |
11162 | ArrayRef<IdentifierInfo *> SelIdents, |
11163 | bool AtArgumentExpression); |
11164 | void CodeCompleteObjCClassMessage(Scope *S, ParsedType Receiver, |
11165 | ArrayRef<IdentifierInfo *> SelIdents, |
11166 | bool AtArgumentExpression, |
11167 | bool IsSuper = false); |
11168 | void CodeCompleteObjCInstanceMessage(Scope *S, Expr *Receiver, |
11169 | ArrayRef<IdentifierInfo *> SelIdents, |
11170 | bool AtArgumentExpression, |
11171 | ObjCInterfaceDecl *Super = nullptr); |
11172 | void CodeCompleteObjCForCollection(Scope *S, |
11173 | DeclGroupPtrTy IterationVar); |
11174 | void CodeCompleteObjCSelector(Scope *S, |
11175 | ArrayRef<IdentifierInfo *> SelIdents); |
11176 | void CodeCompleteObjCProtocolReferences( |
11177 | ArrayRef<IdentifierLocPair> Protocols); |
11178 | void CodeCompleteObjCProtocolDecl(Scope *S); |
11179 | void CodeCompleteObjCInterfaceDecl(Scope *S); |
11180 | void CodeCompleteObjCSuperclass(Scope *S, |
11181 | IdentifierInfo *ClassName, |
11182 | SourceLocation ClassNameLoc); |
11183 | void CodeCompleteObjCImplementationDecl(Scope *S); |
11184 | void CodeCompleteObjCInterfaceCategory(Scope *S, |
11185 | IdentifierInfo *ClassName, |
11186 | SourceLocation ClassNameLoc); |
11187 | void CodeCompleteObjCImplementationCategory(Scope *S, |
11188 | IdentifierInfo *ClassName, |
11189 | SourceLocation ClassNameLoc); |
11190 | void CodeCompleteObjCPropertyDefinition(Scope *S); |
11191 | void CodeCompleteObjCPropertySynthesizeIvar(Scope *S, |
11192 | IdentifierInfo *PropertyName); |
11193 | void CodeCompleteObjCMethodDecl(Scope *S, Optional<bool> IsInstanceMethod, |
11194 | ParsedType ReturnType); |
11195 | void CodeCompleteObjCMethodDeclSelector(Scope *S, |
11196 | bool IsInstanceMethod, |
11197 | bool AtParameterName, |
11198 | ParsedType ReturnType, |
11199 | ArrayRef<IdentifierInfo *> SelIdents); |
11200 | void CodeCompleteObjCClassPropertyRefExpr(Scope *S, IdentifierInfo &ClassName, |
11201 | SourceLocation ClassNameLoc, |
11202 | bool IsBaseExprStatement); |
11203 | void CodeCompletePreprocessorDirective(bool InConditional); |
11204 | void CodeCompleteInPreprocessorConditionalExclusion(Scope *S); |
11205 | void CodeCompletePreprocessorMacroName(bool IsDefinition); |
11206 | void CodeCompletePreprocessorExpression(); |
11207 | void CodeCompletePreprocessorMacroArgument(Scope *S, |
11208 | IdentifierInfo *Macro, |
11209 | MacroInfo *MacroInfo, |
11210 | unsigned Argument); |
11211 | void CodeCompleteIncludedFile(llvm::StringRef Dir, bool IsAngled); |
11212 | void CodeCompleteNaturalLanguage(); |
11213 | void CodeCompleteAvailabilityPlatformName(); |
11214 | void GatherGlobalCodeCompletions(CodeCompletionAllocator &Allocator, |
11215 | CodeCompletionTUInfo &CCTUInfo, |
11216 | SmallVectorImpl<CodeCompletionResult> &Results); |
11217 | //@} |
11218 | |
11219 | //===--------------------------------------------------------------------===// |
11220 | // Extra semantic analysis beyond the C type system |
11221 | |
11222 | public: |
11223 | SourceLocation getLocationOfStringLiteralByte(const StringLiteral *SL, |
11224 | unsigned ByteNo) const; |
11225 | |
11226 | private: |
11227 | void CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, |
11228 | const ArraySubscriptExpr *ASE=nullptr, |
11229 | bool AllowOnePastEnd=true, bool IndexNegated=false); |
11230 | void CheckArrayAccess(const Expr *E); |
11231 | // Used to grab the relevant information from a FormatAttr and a |
11232 | // FunctionDeclaration. |
11233 | struct FormatStringInfo { |
11234 | unsigned FormatIdx; |
11235 | unsigned FirstDataArg; |
11236 | bool HasVAListArg; |
11237 | }; |
11238 | |
11239 | static bool getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, |
11240 | FormatStringInfo *FSI); |
11241 | bool CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, |
11242 | const FunctionProtoType *Proto); |
11243 | bool CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation loc, |
11244 | ArrayRef<const Expr *> Args); |
11245 | bool CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, |
11246 | const FunctionProtoType *Proto); |
11247 | bool CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto); |
11248 | void CheckConstructorCall(FunctionDecl *FDecl, |
11249 | ArrayRef<const Expr *> Args, |
11250 | const FunctionProtoType *Proto, |
11251 | SourceLocation Loc); |
11252 | |
11253 | void checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto, |
11254 | const Expr *ThisArg, ArrayRef<const Expr *> Args, |
11255 | bool IsMemberFunction, SourceLocation Loc, SourceRange Range, |
11256 | VariadicCallType CallType); |
11257 | |
11258 | bool CheckObjCString(Expr *Arg); |
11259 | ExprResult CheckOSLogFormatStringArg(Expr *Arg); |
11260 | |
11261 | ExprResult CheckBuiltinFunctionCall(FunctionDecl *FDecl, |
11262 | unsigned BuiltinID, CallExpr *TheCall); |
11263 | void checkFortifiedBuiltinMemoryFunction(FunctionDecl *FD, CallExpr *TheCall); |
11264 | |
11265 | bool CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, |
11266 | unsigned MaxWidth); |
11267 | bool CheckNeonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11268 | bool CheckMVEBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11269 | bool CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11270 | |
11271 | bool CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11272 | bool CheckBPFBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11273 | bool CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11274 | bool CheckHexagonBuiltinCpu(unsigned BuiltinID, CallExpr *TheCall); |
11275 | bool CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall); |
11276 | bool CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11277 | bool CheckSystemZBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11278 | bool CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall); |
11279 | bool CheckX86BuiltinGatherScatterScale(unsigned BuiltinID, CallExpr *TheCall); |
11280 | bool CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11281 | bool CheckPPCBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
11282 | |
11283 | bool SemaBuiltinVAStart(unsigned BuiltinID, CallExpr *TheCall); |
11284 | bool SemaBuiltinVAStartARMMicrosoft(CallExpr *Call); |
11285 | bool SemaBuiltinUnorderedCompare(CallExpr *TheCall); |
11286 | bool SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs); |
11287 | bool SemaBuiltinVSX(CallExpr *TheCall); |
11288 | bool SemaBuiltinOSLogFormat(CallExpr *TheCall); |
11289 | |
11290 | public: |
11291 | // Used by C++ template instantiation. |
11292 | ExprResult SemaBuiltinShuffleVector(CallExpr *TheCall); |
11293 | ExprResult SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, |
11294 | SourceLocation BuiltinLoc, |
11295 | SourceLocation RParenLoc); |
11296 | |
11297 | private: |
11298 | bool SemaBuiltinPrefetch(CallExpr *TheCall); |
11299 | bool SemaBuiltinAllocaWithAlign(CallExpr *TheCall); |
11300 | bool SemaBuiltinAssume(CallExpr *TheCall); |
11301 | bool SemaBuiltinAssumeAligned(CallExpr *TheCall); |
11302 | bool SemaBuiltinLongjmp(CallExpr *TheCall); |
11303 | bool SemaBuiltinSetjmp(CallExpr *TheCall); |
11304 | ExprResult SemaBuiltinAtomicOverloaded(ExprResult TheCallResult); |
11305 | ExprResult SemaBuiltinNontemporalOverloaded(ExprResult TheCallResult); |
11306 | ExprResult SemaAtomicOpsOverloaded(ExprResult TheCallResult, |
11307 | AtomicExpr::AtomicOp Op); |
11308 | ExprResult SemaBuiltinOperatorNewDeleteOverloaded(ExprResult TheCallResult, |
11309 | bool IsDelete); |
11310 | bool SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, |
11311 | llvm::APSInt &Result); |
11312 | bool SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, int Low, |
11313 | int High, bool RangeIsError = true); |
11314 | bool SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum, |
11315 | unsigned Multiple); |
11316 | bool SemaBuiltinConstantArgPower2(CallExpr *TheCall, int ArgNum); |
11317 | bool SemaBuiltinConstantArgShiftedByte(CallExpr *TheCall, int ArgNum); |
11318 | bool SemaBuiltinConstantArgShiftedByteOrXXFF(CallExpr *TheCall, int ArgNum); |
11319 | bool SemaBuiltinARMSpecialReg(unsigned BuiltinID, CallExpr *TheCall, |
11320 | int ArgNum, unsigned ExpectedFieldNum, |
11321 | bool AllowName); |
11322 | bool SemaBuiltinARMMemoryTaggingCall(unsigned BuiltinID, CallExpr *TheCall); |
11323 | public: |
11324 | enum FormatStringType { |
11325 | FST_Scanf, |
11326 | FST_Printf, |
11327 | FST_NSString, |
11328 | FST_Strftime, |
11329 | FST_Strfmon, |
11330 | FST_Kprintf, |
11331 | FST_FreeBSDKPrintf, |
11332 | FST_OSTrace, |
11333 | FST_OSLog, |
11334 | FST_Unknown |
11335 | }; |
11336 | static FormatStringType GetFormatStringType(const FormatAttr *Format); |
11337 | |
11338 | bool FormatStringHasSArg(const StringLiteral *FExpr); |
11339 | |
11340 | static bool GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx); |
11341 | |
11342 | private: |
11343 | bool CheckFormatArguments(const FormatAttr *Format, |
11344 | ArrayRef<const Expr *> Args, |
11345 | bool IsCXXMember, |
11346 | VariadicCallType CallType, |
11347 | SourceLocation Loc, SourceRange Range, |
11348 | llvm::SmallBitVector &CheckedVarArgs); |
11349 | bool CheckFormatArguments(ArrayRef<const Expr *> Args, |
11350 | bool HasVAListArg, unsigned format_idx, |
11351 | unsigned firstDataArg, FormatStringType Type, |
11352 | VariadicCallType CallType, |
11353 | SourceLocation Loc, SourceRange range, |
11354 | llvm::SmallBitVector &CheckedVarArgs); |
11355 | |
11356 | void CheckAbsoluteValueFunction(const CallExpr *Call, |
11357 | const FunctionDecl *FDecl); |
11358 | |
11359 | void CheckMaxUnsignedZero(const CallExpr *Call, const FunctionDecl *FDecl); |
11360 | |
11361 | void CheckMemaccessArguments(const CallExpr *Call, |
11362 | unsigned BId, |
11363 | IdentifierInfo *FnName); |
11364 | |
11365 | void CheckStrlcpycatArguments(const CallExpr *Call, |
11366 | IdentifierInfo *FnName); |
11367 | |
11368 | void CheckStrncatArguments(const CallExpr *Call, |
11369 | IdentifierInfo *FnName); |
11370 | |
11371 | void CheckReturnValExpr(Expr *RetValExp, QualType lhsType, |
11372 | SourceLocation ReturnLoc, |
11373 | bool isObjCMethod = false, |
11374 | const AttrVec *Attrs = nullptr, |
11375 | const FunctionDecl *FD = nullptr); |
11376 | |
11377 | public: |
11378 | void CheckFloatComparison(SourceLocation Loc, Expr *LHS, Expr *RHS); |
11379 | |
11380 | private: |
11381 | void CheckImplicitConversions(Expr *E, SourceLocation CC = SourceLocation()); |
11382 | void CheckBoolLikeConversion(Expr *E, SourceLocation CC); |
11383 | void CheckForIntOverflow(Expr *E); |
11384 | void CheckUnsequencedOperations(Expr *E); |
11385 | |
11386 | /// Perform semantic checks on a completed expression. This will either |
11387 | /// be a full-expression or a default argument expression. |
11388 | void CheckCompletedExpr(Expr *E, SourceLocation CheckLoc = SourceLocation(), |
11389 | bool IsConstexpr = false); |
11390 | |
11391 | void CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *Field, |
11392 | Expr *Init); |
11393 | |
11394 | /// Check if there is a field shadowing. |
11395 | void CheckShadowInheritedFields(const SourceLocation &Loc, |
11396 | DeclarationName FieldName, |
11397 | const CXXRecordDecl *RD, |
11398 | bool DeclIsField = true); |
11399 | |
11400 | /// Check if the given expression contains 'break' or 'continue' |
11401 | /// statement that produces control flow different from GCC. |
11402 | void CheckBreakContinueBinding(Expr *E); |
11403 | |
11404 | /// Check whether receiver is mutable ObjC container which |
11405 | /// attempts to add itself into the container |
11406 | void CheckObjCCircularContainer(ObjCMessageExpr *Message); |
11407 | |
11408 | void AnalyzeDeleteExprMismatch(const CXXDeleteExpr *DE); |
11409 | void AnalyzeDeleteExprMismatch(FieldDecl *Field, SourceLocation DeleteLoc, |
11410 | bool DeleteWasArrayForm); |
11411 | public: |
11412 | /// Register a magic integral constant to be used as a type tag. |
11413 | void RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, |
11414 | uint64_t MagicValue, QualType Type, |
11415 | bool LayoutCompatible, bool MustBeNull); |
11416 | |
11417 | struct TypeTagData { |
11418 | TypeTagData() {} |
11419 | |
11420 | TypeTagData(QualType Type, bool LayoutCompatible, bool MustBeNull) : |
11421 | Type(Type), LayoutCompatible(LayoutCompatible), |
11422 | MustBeNull(MustBeNull) |
11423 | {} |
11424 | |
11425 | QualType Type; |
11426 | |
11427 | /// If true, \c Type should be compared with other expression's types for |
11428 | /// layout-compatibility. |
11429 | unsigned LayoutCompatible : 1; |
11430 | unsigned MustBeNull : 1; |
11431 | }; |
11432 | |
11433 | /// A pair of ArgumentKind identifier and magic value. This uniquely |
11434 | /// identifies the magic value. |
11435 | typedef std::pair<const IdentifierInfo *, uint64_t> TypeTagMagicValue; |
11436 | |
11437 | private: |
11438 | /// A map from magic value to type information. |
11439 | std::unique_ptr<llvm::DenseMap<TypeTagMagicValue, TypeTagData>> |
11440 | TypeTagForDatatypeMagicValues; |
11441 | |
11442 | /// Peform checks on a call of a function with argument_with_type_tag |
11443 | /// or pointer_with_type_tag attributes. |
11444 | void CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, |
11445 | const ArrayRef<const Expr *> ExprArgs, |
11446 | SourceLocation CallSiteLoc); |
11447 | |
11448 | /// Check if we are taking the address of a packed field |
11449 | /// as this may be a problem if the pointer value is dereferenced. |
11450 | void CheckAddressOfPackedMember(Expr *rhs); |
11451 | |
11452 | /// The parser's current scope. |
11453 | /// |
11454 | /// The parser maintains this state here. |
11455 | Scope *CurScope; |
11456 | |
11457 | mutable IdentifierInfo *Ident_super; |
11458 | mutable IdentifierInfo *Ident___float128; |
11459 | |
11460 | /// Nullability type specifiers. |
11461 | IdentifierInfo *Ident__Nonnull = nullptr; |
11462 | IdentifierInfo *Ident__Nullable = nullptr; |
11463 | IdentifierInfo *Ident__Null_unspecified = nullptr; |
11464 | |
11465 | IdentifierInfo *Ident_NSError = nullptr; |
11466 | |
11467 | /// The handler for the FileChanged preprocessor events. |
11468 | /// |
11469 | /// Used for diagnostics that implement custom semantic analysis for #include |
11470 | /// directives, like -Wpragma-pack. |
11471 | sema::SemaPPCallbacks *SemaPPCallbackHandler; |
11472 | |
11473 | protected: |
11474 | friend class Parser; |
11475 | friend class InitializationSequence; |
11476 | friend class ASTReader; |
11477 | friend class ASTDeclReader; |
11478 | friend class ASTWriter; |
11479 | |
11480 | public: |
11481 | /// Retrieve the keyword associated |
11482 | IdentifierInfo *getNullabilityKeyword(NullabilityKind nullability); |
11483 | |
11484 | /// The struct behind the CFErrorRef pointer. |
11485 | RecordDecl *CFError = nullptr; |
11486 | |
11487 | /// Retrieve the identifier "NSError". |
11488 | IdentifierInfo *getNSErrorIdent(); |
11489 | |
11490 | /// Retrieve the parser's current scope. |
11491 | /// |
11492 | /// This routine must only be used when it is certain that semantic analysis |
11493 | /// and the parser are in precisely the same context, which is not the case |
11494 | /// when, e.g., we are performing any kind of template instantiation. |
11495 | /// Therefore, the only safe places to use this scope are in the parser |
11496 | /// itself and in routines directly invoked from the parser and *never* from |
11497 | /// template substitution or instantiation. |
11498 | Scope *getCurScope() const { return CurScope; } |
11499 | |
11500 | void incrementMSManglingNumber() const { |
11501 | return CurScope->incrementMSManglingNumber(); |
11502 | } |
11503 | |
11504 | IdentifierInfo *getSuperIdentifier() const; |
11505 | IdentifierInfo *getFloat128Identifier() const; |
11506 | |
11507 | Decl *getObjCDeclContext() const; |
11508 | |
11509 | DeclContext *getCurLexicalContext() const { |
11510 | return OriginalLexicalContext ? OriginalLexicalContext : CurContext; |
11511 | } |
11512 | |
11513 | const DeclContext *getCurObjCLexicalContext() const { |
11514 | const DeclContext *DC = getCurLexicalContext(); |
11515 | // A category implicitly has the attribute of the interface. |
11516 | if (const ObjCCategoryDecl *CatD = dyn_cast<ObjCCategoryDecl>(DC)) |
11517 | DC = CatD->getClassInterface(); |
11518 | return DC; |
11519 | } |
11520 | |
11521 | /// To be used for checking whether the arguments being passed to |
11522 | /// function exceeds the number of parameters expected for it. |
11523 | static bool TooManyArguments(size_t NumParams, size_t NumArgs, |
11524 | bool PartialOverloading = false) { |
11525 | // We check whether we're just after a comma in code-completion. |
11526 | if (NumArgs > 0 && PartialOverloading) |
11527 | return NumArgs + 1 > NumParams; // If so, we view as an extra argument. |
11528 | return NumArgs > NumParams; |
11529 | } |
11530 | |
11531 | // Emitting members of dllexported classes is delayed until the class |
11532 | // (including field initializers) is fully parsed. |
11533 | SmallVector<CXXRecordDecl*, 4> DelayedDllExportClasses; |
11534 | SmallVector<CXXMethodDecl*, 4> DelayedDllExportMemberFunctions; |
11535 | |
11536 | private: |
11537 | class SavePendingParsedClassStateRAII { |
11538 | public: |
11539 | SavePendingParsedClassStateRAII(Sema &S) : S(S) { swapSavedState(); } |
11540 | |
11541 | ~SavePendingParsedClassStateRAII() { |
11542 | assert(S.DelayedOverridingExceptionSpecChecks.empty() &&((S.DelayedOverridingExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedOverridingExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 11543, __PRETTY_FUNCTION__)) |
11543 | "there shouldn't be any pending delayed exception spec checks")((S.DelayedOverridingExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedOverridingExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 11543, __PRETTY_FUNCTION__)); |
11544 | assert(S.DelayedEquivalentExceptionSpecChecks.empty() &&((S.DelayedEquivalentExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedEquivalentExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 11545, __PRETTY_FUNCTION__)) |
11545 | "there shouldn't be any pending delayed exception spec checks")((S.DelayedEquivalentExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedEquivalentExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 11545, __PRETTY_FUNCTION__)); |
11546 | assert(S.DelayedDllExportClasses.empty() &&((S.DelayedDllExportClasses.empty() && "there shouldn't be any pending delayed DLL export classes" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedDllExportClasses.empty() && \"there shouldn't be any pending delayed DLL export classes\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 11547, __PRETTY_FUNCTION__)) |
11547 | "there shouldn't be any pending delayed DLL export classes")((S.DelayedDllExportClasses.empty() && "there shouldn't be any pending delayed DLL export classes" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedDllExportClasses.empty() && \"there shouldn't be any pending delayed DLL export classes\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/include/clang/Sema/Sema.h" , 11547, __PRETTY_FUNCTION__)); |
11548 | swapSavedState(); |
11549 | } |
11550 | |
11551 | private: |
11552 | Sema &S; |
11553 | decltype(DelayedOverridingExceptionSpecChecks) |
11554 | SavedOverridingExceptionSpecChecks; |
11555 | decltype(DelayedEquivalentExceptionSpecChecks) |
11556 | SavedEquivalentExceptionSpecChecks; |
11557 | decltype(DelayedDllExportClasses) SavedDllExportClasses; |
11558 | |
11559 | void swapSavedState() { |
11560 | SavedOverridingExceptionSpecChecks.swap( |
11561 | S.DelayedOverridingExceptionSpecChecks); |
11562 | SavedEquivalentExceptionSpecChecks.swap( |
11563 | S.DelayedEquivalentExceptionSpecChecks); |
11564 | SavedDllExportClasses.swap(S.DelayedDllExportClasses); |
11565 | } |
11566 | }; |
11567 | |
11568 | /// Helper class that collects misaligned member designations and |
11569 | /// their location info for delayed diagnostics. |
11570 | struct MisalignedMember { |
11571 | Expr *E; |
11572 | RecordDecl *RD; |
11573 | ValueDecl *MD; |
11574 | CharUnits Alignment; |
11575 | |
11576 | MisalignedMember() : E(), RD(), MD(), Alignment() {} |
11577 | MisalignedMember(Expr *E, RecordDecl *RD, ValueDecl *MD, |
11578 | CharUnits Alignment) |
11579 | : E(E), RD(RD), MD(MD), Alignment(Alignment) {} |
11580 | explicit MisalignedMember(Expr *E) |
11581 | : MisalignedMember(E, nullptr, nullptr, CharUnits()) {} |
11582 | |
11583 | bool operator==(const MisalignedMember &m) { return this->E == m.E; } |
11584 | }; |
11585 | /// Small set of gathered accesses to potentially misaligned members |
11586 | /// due to the packed attribute. |
11587 | SmallVector<MisalignedMember, 4> MisalignedMembers; |
11588 | |
11589 | /// Adds an expression to the set of gathered misaligned members. |
11590 | void AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD, |
11591 | CharUnits Alignment); |
11592 | |
11593 | public: |
11594 | /// Diagnoses the current set of gathered accesses. This typically |
11595 | /// happens at full expression level. The set is cleared after emitting the |
11596 | /// diagnostics. |
11597 | void DiagnoseMisalignedMembers(); |
11598 | |
11599 | /// This function checks if the expression is in the sef of potentially |
11600 | /// misaligned members and it is converted to some pointer type T with lower |
11601 | /// or equal alignment requirements. If so it removes it. This is used when |
11602 | /// we do not want to diagnose such misaligned access (e.g. in conversions to |
11603 | /// void*). |
11604 | void DiscardMisalignedMemberAddress(const Type *T, Expr *E); |
11605 | |
11606 | /// This function calls Action when it determines that E designates a |
11607 | /// misaligned member due to the packed attribute. This is used to emit |
11608 | /// local diagnostics like in reference binding. |
11609 | void RefersToMemberWithReducedAlignment( |
11610 | Expr *E, |
11611 | llvm::function_ref<void(Expr *, RecordDecl *, FieldDecl *, CharUnits)> |
11612 | Action); |
11613 | |
11614 | /// Describes the reason a calling convention specification was ignored, used |
11615 | /// for diagnostics. |
11616 | enum class CallingConventionIgnoredReason { |
11617 | ForThisTarget = 0, |
11618 | VariadicFunction, |
11619 | ConstructorDestructor, |
11620 | BuiltinFunction |
11621 | }; |
11622 | }; |
11623 | |
11624 | /// RAII object that enters a new expression evaluation context. |
11625 | class EnterExpressionEvaluationContext { |
11626 | Sema &Actions; |
11627 | bool Entered = true; |
11628 | |
11629 | public: |
11630 | EnterExpressionEvaluationContext( |
11631 | Sema &Actions, Sema::ExpressionEvaluationContext NewContext, |
11632 | Decl *LambdaContextDecl = nullptr, |
11633 | Sema::ExpressionEvaluationContextRecord::ExpressionKind ExprContext = |
11634 | Sema::ExpressionEvaluationContextRecord::EK_Other, |
11635 | bool ShouldEnter = true) |
11636 | : Actions(Actions), Entered(ShouldEnter) { |
11637 | if (Entered) |
11638 | Actions.PushExpressionEvaluationContext(NewContext, LambdaContextDecl, |
11639 | ExprContext); |
11640 | } |
11641 | EnterExpressionEvaluationContext( |
11642 | Sema &Actions, Sema::ExpressionEvaluationContext NewContext, |
11643 | Sema::ReuseLambdaContextDecl_t, |
11644 | Sema::ExpressionEvaluationContextRecord::ExpressionKind ExprContext = |
11645 | Sema::ExpressionEvaluationContextRecord::EK_Other) |
11646 | : Actions(Actions) { |
11647 | Actions.PushExpressionEvaluationContext( |
11648 | NewContext, Sema::ReuseLambdaContextDecl, ExprContext); |
11649 | } |
11650 | |
11651 | enum InitListTag { InitList }; |
11652 | EnterExpressionEvaluationContext(Sema &Actions, InitListTag, |
11653 | bool ShouldEnter = true) |
11654 | : Actions(Actions), Entered(false) { |
11655 | // In C++11 onwards, narrowing checks are performed on the contents of |
11656 | // braced-init-lists, even when they occur within unevaluated operands. |
11657 | // Therefore we still need to instantiate constexpr functions used in such |
11658 | // a context. |
11659 | if (ShouldEnter && Actions.isUnevaluatedContext() && |
11660 | Actions.getLangOpts().CPlusPlus11) { |
11661 | Actions.PushExpressionEvaluationContext( |
11662 | Sema::ExpressionEvaluationContext::UnevaluatedList); |
11663 | Entered = true; |
11664 | } |
11665 | } |
11666 | |
11667 | ~EnterExpressionEvaluationContext() { |
11668 | if (Entered) |
11669 | Actions.PopExpressionEvaluationContext(); |
11670 | } |
11671 | }; |
11672 | |
11673 | DeductionFailureInfo |
11674 | MakeDeductionFailureInfo(ASTContext &Context, Sema::TemplateDeductionResult TDK, |
11675 | sema::TemplateDeductionInfo &Info); |
11676 | |
11677 | /// Contains a late templated function. |
11678 | /// Will be parsed at the end of the translation unit, used by Sema & Parser. |
11679 | struct LateParsedTemplate { |
11680 | CachedTokens Toks; |
11681 | /// The template function declaration to be late parsed. |
11682 | Decl *D; |
11683 | }; |
11684 | } // end namespace clang |
11685 | |
11686 | namespace llvm { |
11687 | // Hash a FunctionDeclAndLoc by looking at both its FunctionDecl and its |
11688 | // SourceLocation. |
11689 | template <> struct DenseMapInfo<clang::Sema::FunctionDeclAndLoc> { |
11690 | using FunctionDeclAndLoc = clang::Sema::FunctionDeclAndLoc; |
11691 | using FDBaseInfo = DenseMapInfo<clang::CanonicalDeclPtr<clang::FunctionDecl>>; |
11692 | |
11693 | static FunctionDeclAndLoc getEmptyKey() { |
11694 | return {FDBaseInfo::getEmptyKey(), clang::SourceLocation()}; |
11695 | } |
11696 | |
11697 | static FunctionDeclAndLoc getTombstoneKey() { |
11698 | return {FDBaseInfo::getTombstoneKey(), clang::SourceLocation()}; |
11699 | } |
11700 | |
11701 | static unsigned getHashValue(const FunctionDeclAndLoc &FDL) { |
11702 | return hash_combine(FDBaseInfo::getHashValue(FDL.FD), |
11703 | FDL.Loc.getRawEncoding()); |
11704 | } |
11705 | |
11706 | static bool isEqual(const FunctionDeclAndLoc &LHS, |
11707 | const FunctionDeclAndLoc &RHS) { |
11708 | return LHS.FD == RHS.FD && LHS.Loc == RHS.Loc; |
11709 | } |
11710 | }; |
11711 | } // namespace llvm |
11712 | |
11713 | #endif |