File: | tools/clang/lib/AST/Decl.cpp |
Warning: | line 2077, column 5 Called C++ object pointer is null |
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1 | //===- Decl.cpp - Declaration AST Node Implementation ---------------------===// | |||
2 | // | |||
3 | // The LLVM Compiler Infrastructure | |||
4 | // | |||
5 | // This file is distributed under the University of Illinois Open Source | |||
6 | // License. See LICENSE.TXT for details. | |||
7 | // | |||
8 | //===----------------------------------------------------------------------===// | |||
9 | // | |||
10 | // This file implements the Decl subclasses. | |||
11 | // | |||
12 | //===----------------------------------------------------------------------===// | |||
13 | ||||
14 | #include "clang/AST/Decl.h" | |||
15 | #include "Linkage.h" | |||
16 | #include "clang/AST/ASTContext.h" | |||
17 | #include "clang/AST/ASTLambda.h" | |||
18 | #include "clang/AST/ASTMutationListener.h" | |||
19 | #include "clang/AST/CanonicalType.h" | |||
20 | #include "clang/AST/DeclBase.h" | |||
21 | #include "clang/AST/DeclCXX.h" | |||
22 | #include "clang/AST/DeclObjC.h" | |||
23 | #include "clang/AST/DeclOpenMP.h" | |||
24 | #include "clang/AST/DeclTemplate.h" | |||
25 | #include "clang/AST/DeclarationName.h" | |||
26 | #include "clang/AST/Expr.h" | |||
27 | #include "clang/AST/ExprCXX.h" | |||
28 | #include "clang/AST/ExternalASTSource.h" | |||
29 | #include "clang/AST/ODRHash.h" | |||
30 | #include "clang/AST/PrettyDeclStackTrace.h" | |||
31 | #include "clang/AST/PrettyPrinter.h" | |||
32 | #include "clang/AST/Redeclarable.h" | |||
33 | #include "clang/AST/Stmt.h" | |||
34 | #include "clang/AST/TemplateBase.h" | |||
35 | #include "clang/AST/Type.h" | |||
36 | #include "clang/AST/TypeLoc.h" | |||
37 | #include "clang/Basic/Builtins.h" | |||
38 | #include "clang/Basic/IdentifierTable.h" | |||
39 | #include "clang/Basic/LLVM.h" | |||
40 | #include "clang/Basic/LangOptions.h" | |||
41 | #include "clang/Basic/Linkage.h" | |||
42 | #include "clang/Basic/Module.h" | |||
43 | #include "clang/Basic/PartialDiagnostic.h" | |||
44 | #include "clang/Basic/SanitizerBlacklist.h" | |||
45 | #include "clang/Basic/Sanitizers.h" | |||
46 | #include "clang/Basic/SourceLocation.h" | |||
47 | #include "clang/Basic/SourceManager.h" | |||
48 | #include "clang/Basic/Specifiers.h" | |||
49 | #include "clang/Basic/TargetCXXABI.h" | |||
50 | #include "clang/Basic/TargetInfo.h" | |||
51 | #include "clang/Basic/Visibility.h" | |||
52 | #include "clang/Frontend/FrontendDiagnostic.h" | |||
53 | #include "llvm/ADT/APSInt.h" | |||
54 | #include "llvm/ADT/ArrayRef.h" | |||
55 | #include "llvm/ADT/None.h" | |||
56 | #include "llvm/ADT/Optional.h" | |||
57 | #include "llvm/ADT/STLExtras.h" | |||
58 | #include "llvm/ADT/SmallVector.h" | |||
59 | #include "llvm/ADT/StringSwitch.h" | |||
60 | #include "llvm/ADT/StringRef.h" | |||
61 | #include "llvm/ADT/Triple.h" | |||
62 | #include "llvm/Support/Casting.h" | |||
63 | #include "llvm/Support/ErrorHandling.h" | |||
64 | #include "llvm/Support/raw_ostream.h" | |||
65 | #include <algorithm> | |||
66 | #include <cassert> | |||
67 | #include <cstddef> | |||
68 | #include <cstring> | |||
69 | #include <memory> | |||
70 | #include <string> | |||
71 | #include <tuple> | |||
72 | #include <type_traits> | |||
73 | ||||
74 | using namespace clang; | |||
75 | ||||
76 | Decl *clang::getPrimaryMergedDecl(Decl *D) { | |||
77 | return D->getASTContext().getPrimaryMergedDecl(D); | |||
78 | } | |||
79 | ||||
80 | void PrettyDeclStackTraceEntry::print(raw_ostream &OS) const { | |||
81 | SourceLocation Loc = this->Loc; | |||
82 | if (!Loc.isValid() && TheDecl) Loc = TheDecl->getLocation(); | |||
83 | if (Loc.isValid()) { | |||
84 | Loc.print(OS, Context.getSourceManager()); | |||
85 | OS << ": "; | |||
86 | } | |||
87 | OS << Message; | |||
88 | ||||
89 | if (auto *ND = dyn_cast_or_null<NamedDecl>(TheDecl)) { | |||
90 | OS << " '"; | |||
91 | ND->getNameForDiagnostic(OS, Context.getPrintingPolicy(), true); | |||
92 | OS << "'"; | |||
93 | } | |||
94 | ||||
95 | OS << '\n'; | |||
96 | } | |||
97 | ||||
98 | // Defined here so that it can be inlined into its direct callers. | |||
99 | bool Decl::isOutOfLine() const { | |||
100 | return !getLexicalDeclContext()->Equals(getDeclContext()); | |||
101 | } | |||
102 | ||||
103 | TranslationUnitDecl::TranslationUnitDecl(ASTContext &ctx) | |||
104 | : Decl(TranslationUnit, nullptr, SourceLocation()), | |||
105 | DeclContext(TranslationUnit), Ctx(ctx) {} | |||
106 | ||||
107 | //===----------------------------------------------------------------------===// | |||
108 | // NamedDecl Implementation | |||
109 | //===----------------------------------------------------------------------===// | |||
110 | ||||
111 | // Visibility rules aren't rigorously externally specified, but here | |||
112 | // are the basic principles behind what we implement: | |||
113 | // | |||
114 | // 1. An explicit visibility attribute is generally a direct expression | |||
115 | // of the user's intent and should be honored. Only the innermost | |||
116 | // visibility attribute applies. If no visibility attribute applies, | |||
117 | // global visibility settings are considered. | |||
118 | // | |||
119 | // 2. There is one caveat to the above: on or in a template pattern, | |||
120 | // an explicit visibility attribute is just a default rule, and | |||
121 | // visibility can be decreased by the visibility of template | |||
122 | // arguments. But this, too, has an exception: an attribute on an | |||
123 | // explicit specialization or instantiation causes all the visibility | |||
124 | // restrictions of the template arguments to be ignored. | |||
125 | // | |||
126 | // 3. A variable that does not otherwise have explicit visibility can | |||
127 | // be restricted by the visibility of its type. | |||
128 | // | |||
129 | // 4. A visibility restriction is explicit if it comes from an | |||
130 | // attribute (or something like it), not a global visibility setting. | |||
131 | // When emitting a reference to an external symbol, visibility | |||
132 | // restrictions are ignored unless they are explicit. | |||
133 | // | |||
134 | // 5. When computing the visibility of a non-type, including a | |||
135 | // non-type member of a class, only non-type visibility restrictions | |||
136 | // are considered: the 'visibility' attribute, global value-visibility | |||
137 | // settings, and a few special cases like __private_extern. | |||
138 | // | |||
139 | // 6. When computing the visibility of a type, including a type member | |||
140 | // of a class, only type visibility restrictions are considered: | |||
141 | // the 'type_visibility' attribute and global type-visibility settings. | |||
142 | // However, a 'visibility' attribute counts as a 'type_visibility' | |||
143 | // attribute on any declaration that only has the former. | |||
144 | // | |||
145 | // The visibility of a "secondary" entity, like a template argument, | |||
146 | // is computed using the kind of that entity, not the kind of the | |||
147 | // primary entity for which we are computing visibility. For example, | |||
148 | // the visibility of a specialization of either of these templates: | |||
149 | // template <class T, bool (&compare)(T, X)> bool has_match(list<T>, X); | |||
150 | // template <class T, bool (&compare)(T, X)> class matcher; | |||
151 | // is restricted according to the type visibility of the argument 'T', | |||
152 | // the type visibility of 'bool(&)(T,X)', and the value visibility of | |||
153 | // the argument function 'compare'. That 'has_match' is a value | |||
154 | // and 'matcher' is a type only matters when looking for attributes | |||
155 | // and settings from the immediate context. | |||
156 | ||||
157 | /// Does this computation kind permit us to consider additional | |||
158 | /// visibility settings from attributes and the like? | |||
159 | static bool hasExplicitVisibilityAlready(LVComputationKind computation) { | |||
160 | return computation.IgnoreExplicitVisibility; | |||
161 | } | |||
162 | ||||
163 | /// Given an LVComputationKind, return one of the same type/value sort | |||
164 | /// that records that it already has explicit visibility. | |||
165 | static LVComputationKind | |||
166 | withExplicitVisibilityAlready(LVComputationKind Kind) { | |||
167 | Kind.IgnoreExplicitVisibility = true; | |||
168 | return Kind; | |||
169 | } | |||
170 | ||||
171 | static Optional<Visibility> getExplicitVisibility(const NamedDecl *D, | |||
172 | LVComputationKind kind) { | |||
173 | assert(!kind.IgnoreExplicitVisibility &&(static_cast <bool> (!kind.IgnoreExplicitVisibility && "asking for explicit visibility when we shouldn't be") ? void (0) : __assert_fail ("!kind.IgnoreExplicitVisibility && \"asking for explicit visibility when we shouldn't be\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 174, __extension__ __PRETTY_FUNCTION__)) | |||
174 | "asking for explicit visibility when we shouldn't be")(static_cast <bool> (!kind.IgnoreExplicitVisibility && "asking for explicit visibility when we shouldn't be") ? void (0) : __assert_fail ("!kind.IgnoreExplicitVisibility && \"asking for explicit visibility when we shouldn't be\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 174, __extension__ __PRETTY_FUNCTION__)); | |||
175 | return D->getExplicitVisibility(kind.getExplicitVisibilityKind()); | |||
176 | } | |||
177 | ||||
178 | /// Is the given declaration a "type" or a "value" for the purposes of | |||
179 | /// visibility computation? | |||
180 | static bool usesTypeVisibility(const NamedDecl *D) { | |||
181 | return isa<TypeDecl>(D) || | |||
182 | isa<ClassTemplateDecl>(D) || | |||
183 | isa<ObjCInterfaceDecl>(D); | |||
184 | } | |||
185 | ||||
186 | /// Does the given declaration have member specialization information, | |||
187 | /// and if so, is it an explicit specialization? | |||
188 | template <class T> static typename | |||
189 | std::enable_if<!std::is_base_of<RedeclarableTemplateDecl, T>::value, bool>::type | |||
190 | isExplicitMemberSpecialization(const T *D) { | |||
191 | if (const MemberSpecializationInfo *member = | |||
192 | D->getMemberSpecializationInfo()) { | |||
193 | return member->isExplicitSpecialization(); | |||
194 | } | |||
195 | return false; | |||
196 | } | |||
197 | ||||
198 | /// For templates, this question is easier: a member template can't be | |||
199 | /// explicitly instantiated, so there's a single bit indicating whether | |||
200 | /// or not this is an explicit member specialization. | |||
201 | static bool isExplicitMemberSpecialization(const RedeclarableTemplateDecl *D) { | |||
202 | return D->isMemberSpecialization(); | |||
203 | } | |||
204 | ||||
205 | /// Given a visibility attribute, return the explicit visibility | |||
206 | /// associated with it. | |||
207 | template <class T> | |||
208 | static Visibility getVisibilityFromAttr(const T *attr) { | |||
209 | switch (attr->getVisibility()) { | |||
210 | case T::Default: | |||
211 | return DefaultVisibility; | |||
212 | case T::Hidden: | |||
213 | return HiddenVisibility; | |||
214 | case T::Protected: | |||
215 | return ProtectedVisibility; | |||
216 | } | |||
217 | llvm_unreachable("bad visibility kind")::llvm::llvm_unreachable_internal("bad visibility kind", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 217); | |||
218 | } | |||
219 | ||||
220 | /// Return the explicit visibility of the given declaration. | |||
221 | static Optional<Visibility> getVisibilityOf(const NamedDecl *D, | |||
222 | NamedDecl::ExplicitVisibilityKind kind) { | |||
223 | // If we're ultimately computing the visibility of a type, look for | |||
224 | // a 'type_visibility' attribute before looking for 'visibility'. | |||
225 | if (kind == NamedDecl::VisibilityForType) { | |||
226 | if (const auto *A = D->getAttr<TypeVisibilityAttr>()) { | |||
227 | return getVisibilityFromAttr(A); | |||
228 | } | |||
229 | } | |||
230 | ||||
231 | // If this declaration has an explicit visibility attribute, use it. | |||
232 | if (const auto *A = D->getAttr<VisibilityAttr>()) { | |||
233 | return getVisibilityFromAttr(A); | |||
234 | } | |||
235 | ||||
236 | return None; | |||
237 | } | |||
238 | ||||
239 | LinkageInfo LinkageComputer::getLVForType(const Type &T, | |||
240 | LVComputationKind computation) { | |||
241 | if (computation.IgnoreAllVisibility) | |||
242 | return LinkageInfo(T.getLinkage(), DefaultVisibility, true); | |||
243 | return getTypeLinkageAndVisibility(&T); | |||
244 | } | |||
245 | ||||
246 | /// \brief Get the most restrictive linkage for the types in the given | |||
247 | /// template parameter list. For visibility purposes, template | |||
248 | /// parameters are part of the signature of a template. | |||
249 | LinkageInfo LinkageComputer::getLVForTemplateParameterList( | |||
250 | const TemplateParameterList *Params, LVComputationKind computation) { | |||
251 | LinkageInfo LV; | |||
252 | for (const NamedDecl *P : *Params) { | |||
253 | // Template type parameters are the most common and never | |||
254 | // contribute to visibility, pack or not. | |||
255 | if (isa<TemplateTypeParmDecl>(P)) | |||
256 | continue; | |||
257 | ||||
258 | // Non-type template parameters can be restricted by the value type, e.g. | |||
259 | // template <enum X> class A { ... }; | |||
260 | // We have to be careful here, though, because we can be dealing with | |||
261 | // dependent types. | |||
262 | if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(P)) { | |||
263 | // Handle the non-pack case first. | |||
264 | if (!NTTP->isExpandedParameterPack()) { | |||
265 | if (!NTTP->getType()->isDependentType()) { | |||
266 | LV.merge(getLVForType(*NTTP->getType(), computation)); | |||
267 | } | |||
268 | continue; | |||
269 | } | |||
270 | ||||
271 | // Look at all the types in an expanded pack. | |||
272 | for (unsigned i = 0, n = NTTP->getNumExpansionTypes(); i != n; ++i) { | |||
273 | QualType type = NTTP->getExpansionType(i); | |||
274 | if (!type->isDependentType()) | |||
275 | LV.merge(getTypeLinkageAndVisibility(type)); | |||
276 | } | |||
277 | continue; | |||
278 | } | |||
279 | ||||
280 | // Template template parameters can be restricted by their | |||
281 | // template parameters, recursively. | |||
282 | const auto *TTP = cast<TemplateTemplateParmDecl>(P); | |||
283 | ||||
284 | // Handle the non-pack case first. | |||
285 | if (!TTP->isExpandedParameterPack()) { | |||
286 | LV.merge(getLVForTemplateParameterList(TTP->getTemplateParameters(), | |||
287 | computation)); | |||
288 | continue; | |||
289 | } | |||
290 | ||||
291 | // Look at all expansions in an expanded pack. | |||
292 | for (unsigned i = 0, n = TTP->getNumExpansionTemplateParameters(); | |||
293 | i != n; ++i) { | |||
294 | LV.merge(getLVForTemplateParameterList( | |||
295 | TTP->getExpansionTemplateParameters(i), computation)); | |||
296 | } | |||
297 | } | |||
298 | ||||
299 | return LV; | |||
300 | } | |||
301 | ||||
302 | static const Decl *getOutermostFuncOrBlockContext(const Decl *D) { | |||
303 | const Decl *Ret = nullptr; | |||
304 | const DeclContext *DC = D->getDeclContext(); | |||
305 | while (DC->getDeclKind() != Decl::TranslationUnit) { | |||
306 | if (isa<FunctionDecl>(DC) || isa<BlockDecl>(DC)) | |||
307 | Ret = cast<Decl>(DC); | |||
308 | DC = DC->getParent(); | |||
309 | } | |||
310 | return Ret; | |||
311 | } | |||
312 | ||||
313 | /// \brief Get the most restrictive linkage for the types and | |||
314 | /// declarations in the given template argument list. | |||
315 | /// | |||
316 | /// Note that we don't take an LVComputationKind because we always | |||
317 | /// want to honor the visibility of template arguments in the same way. | |||
318 | LinkageInfo | |||
319 | LinkageComputer::getLVForTemplateArgumentList(ArrayRef<TemplateArgument> Args, | |||
320 | LVComputationKind computation) { | |||
321 | LinkageInfo LV; | |||
322 | ||||
323 | for (const TemplateArgument &Arg : Args) { | |||
324 | switch (Arg.getKind()) { | |||
325 | case TemplateArgument::Null: | |||
326 | case TemplateArgument::Integral: | |||
327 | case TemplateArgument::Expression: | |||
328 | continue; | |||
329 | ||||
330 | case TemplateArgument::Type: | |||
331 | LV.merge(getLVForType(*Arg.getAsType(), computation)); | |||
332 | continue; | |||
333 | ||||
334 | case TemplateArgument::Declaration: { | |||
335 | const NamedDecl *ND = Arg.getAsDecl(); | |||
336 | assert(!usesTypeVisibility(ND))(static_cast <bool> (!usesTypeVisibility(ND)) ? void (0 ) : __assert_fail ("!usesTypeVisibility(ND)", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 336, __extension__ __PRETTY_FUNCTION__)); | |||
337 | LV.merge(getLVForDecl(ND, computation)); | |||
338 | continue; | |||
339 | } | |||
340 | ||||
341 | case TemplateArgument::NullPtr: | |||
342 | LV.merge(getTypeLinkageAndVisibility(Arg.getNullPtrType())); | |||
343 | continue; | |||
344 | ||||
345 | case TemplateArgument::Template: | |||
346 | case TemplateArgument::TemplateExpansion: | |||
347 | if (TemplateDecl *Template = | |||
348 | Arg.getAsTemplateOrTemplatePattern().getAsTemplateDecl()) | |||
349 | LV.merge(getLVForDecl(Template, computation)); | |||
350 | continue; | |||
351 | ||||
352 | case TemplateArgument::Pack: | |||
353 | LV.merge(getLVForTemplateArgumentList(Arg.getPackAsArray(), computation)); | |||
354 | continue; | |||
355 | } | |||
356 | llvm_unreachable("bad template argument kind")::llvm::llvm_unreachable_internal("bad template argument kind" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 356); | |||
357 | } | |||
358 | ||||
359 | return LV; | |||
360 | } | |||
361 | ||||
362 | LinkageInfo | |||
363 | LinkageComputer::getLVForTemplateArgumentList(const TemplateArgumentList &TArgs, | |||
364 | LVComputationKind computation) { | |||
365 | return getLVForTemplateArgumentList(TArgs.asArray(), computation); | |||
366 | } | |||
367 | ||||
368 | static bool shouldConsiderTemplateVisibility(const FunctionDecl *fn, | |||
369 | const FunctionTemplateSpecializationInfo *specInfo) { | |||
370 | // Include visibility from the template parameters and arguments | |||
371 | // only if this is not an explicit instantiation or specialization | |||
372 | // with direct explicit visibility. (Implicit instantiations won't | |||
373 | // have a direct attribute.) | |||
374 | if (!specInfo->isExplicitInstantiationOrSpecialization()) | |||
375 | return true; | |||
376 | ||||
377 | return !fn->hasAttr<VisibilityAttr>(); | |||
378 | } | |||
379 | ||||
380 | /// Merge in template-related linkage and visibility for the given | |||
381 | /// function template specialization. | |||
382 | /// | |||
383 | /// We don't need a computation kind here because we can assume | |||
384 | /// LVForValue. | |||
385 | /// | |||
386 | /// \param[out] LV the computation to use for the parent | |||
387 | void LinkageComputer::mergeTemplateLV( | |||
388 | LinkageInfo &LV, const FunctionDecl *fn, | |||
389 | const FunctionTemplateSpecializationInfo *specInfo, | |||
390 | LVComputationKind computation) { | |||
391 | bool considerVisibility = | |||
392 | shouldConsiderTemplateVisibility(fn, specInfo); | |||
393 | ||||
394 | // Merge information from the template parameters. | |||
395 | FunctionTemplateDecl *temp = specInfo->getTemplate(); | |||
396 | LinkageInfo tempLV = | |||
397 | getLVForTemplateParameterList(temp->getTemplateParameters(), computation); | |||
398 | LV.mergeMaybeWithVisibility(tempLV, considerVisibility); | |||
399 | ||||
400 | // Merge information from the template arguments. | |||
401 | const TemplateArgumentList &templateArgs = *specInfo->TemplateArguments; | |||
402 | LinkageInfo argsLV = getLVForTemplateArgumentList(templateArgs, computation); | |||
403 | LV.mergeMaybeWithVisibility(argsLV, considerVisibility); | |||
404 | } | |||
405 | ||||
406 | /// Does the given declaration have a direct visibility attribute | |||
407 | /// that would match the given rules? | |||
408 | static bool hasDirectVisibilityAttribute(const NamedDecl *D, | |||
409 | LVComputationKind computation) { | |||
410 | if (computation.IgnoreAllVisibility) | |||
411 | return false; | |||
412 | ||||
413 | return (computation.isTypeVisibility() && D->hasAttr<TypeVisibilityAttr>()) || | |||
414 | D->hasAttr<VisibilityAttr>(); | |||
415 | } | |||
416 | ||||
417 | /// Should we consider visibility associated with the template | |||
418 | /// arguments and parameters of the given class template specialization? | |||
419 | static bool shouldConsiderTemplateVisibility( | |||
420 | const ClassTemplateSpecializationDecl *spec, | |||
421 | LVComputationKind computation) { | |||
422 | // Include visibility from the template parameters and arguments | |||
423 | // only if this is not an explicit instantiation or specialization | |||
424 | // with direct explicit visibility (and note that implicit | |||
425 | // instantiations won't have a direct attribute). | |||
426 | // | |||
427 | // Furthermore, we want to ignore template parameters and arguments | |||
428 | // for an explicit specialization when computing the visibility of a | |||
429 | // member thereof with explicit visibility. | |||
430 | // | |||
431 | // This is a bit complex; let's unpack it. | |||
432 | // | |||
433 | // An explicit class specialization is an independent, top-level | |||
434 | // declaration. As such, if it or any of its members has an | |||
435 | // explicit visibility attribute, that must directly express the | |||
436 | // user's intent, and we should honor it. The same logic applies to | |||
437 | // an explicit instantiation of a member of such a thing. | |||
438 | ||||
439 | // Fast path: if this is not an explicit instantiation or | |||
440 | // specialization, we always want to consider template-related | |||
441 | // visibility restrictions. | |||
442 | if (!spec->isExplicitInstantiationOrSpecialization()) | |||
443 | return true; | |||
444 | ||||
445 | // This is the 'member thereof' check. | |||
446 | if (spec->isExplicitSpecialization() && | |||
447 | hasExplicitVisibilityAlready(computation)) | |||
448 | return false; | |||
449 | ||||
450 | return !hasDirectVisibilityAttribute(spec, computation); | |||
451 | } | |||
452 | ||||
453 | /// Merge in template-related linkage and visibility for the given | |||
454 | /// class template specialization. | |||
455 | void LinkageComputer::mergeTemplateLV( | |||
456 | LinkageInfo &LV, const ClassTemplateSpecializationDecl *spec, | |||
457 | LVComputationKind computation) { | |||
458 | bool considerVisibility = shouldConsiderTemplateVisibility(spec, computation); | |||
459 | ||||
460 | // Merge information from the template parameters, but ignore | |||
461 | // visibility if we're only considering template arguments. | |||
462 | ||||
463 | ClassTemplateDecl *temp = spec->getSpecializedTemplate(); | |||
464 | LinkageInfo tempLV = | |||
465 | getLVForTemplateParameterList(temp->getTemplateParameters(), computation); | |||
466 | LV.mergeMaybeWithVisibility(tempLV, | |||
467 | considerVisibility && !hasExplicitVisibilityAlready(computation)); | |||
468 | ||||
469 | // Merge information from the template arguments. We ignore | |||
470 | // template-argument visibility if we've got an explicit | |||
471 | // instantiation with a visibility attribute. | |||
472 | const TemplateArgumentList &templateArgs = spec->getTemplateArgs(); | |||
473 | LinkageInfo argsLV = getLVForTemplateArgumentList(templateArgs, computation); | |||
474 | if (considerVisibility) | |||
475 | LV.mergeVisibility(argsLV); | |||
476 | LV.mergeExternalVisibility(argsLV); | |||
477 | } | |||
478 | ||||
479 | /// Should we consider visibility associated with the template | |||
480 | /// arguments and parameters of the given variable template | |||
481 | /// specialization? As usual, follow class template specialization | |||
482 | /// logic up to initialization. | |||
483 | static bool shouldConsiderTemplateVisibility( | |||
484 | const VarTemplateSpecializationDecl *spec, | |||
485 | LVComputationKind computation) { | |||
486 | // Include visibility from the template parameters and arguments | |||
487 | // only if this is not an explicit instantiation or specialization | |||
488 | // with direct explicit visibility (and note that implicit | |||
489 | // instantiations won't have a direct attribute). | |||
490 | if (!spec->isExplicitInstantiationOrSpecialization()) | |||
491 | return true; | |||
492 | ||||
493 | // An explicit variable specialization is an independent, top-level | |||
494 | // declaration. As such, if it has an explicit visibility attribute, | |||
495 | // that must directly express the user's intent, and we should honor | |||
496 | // it. | |||
497 | if (spec->isExplicitSpecialization() && | |||
498 | hasExplicitVisibilityAlready(computation)) | |||
499 | return false; | |||
500 | ||||
501 | return !hasDirectVisibilityAttribute(spec, computation); | |||
502 | } | |||
503 | ||||
504 | /// Merge in template-related linkage and visibility for the given | |||
505 | /// variable template specialization. As usual, follow class template | |||
506 | /// specialization logic up to initialization. | |||
507 | void LinkageComputer::mergeTemplateLV(LinkageInfo &LV, | |||
508 | const VarTemplateSpecializationDecl *spec, | |||
509 | LVComputationKind computation) { | |||
510 | bool considerVisibility = shouldConsiderTemplateVisibility(spec, computation); | |||
511 | ||||
512 | // Merge information from the template parameters, but ignore | |||
513 | // visibility if we're only considering template arguments. | |||
514 | ||||
515 | VarTemplateDecl *temp = spec->getSpecializedTemplate(); | |||
516 | LinkageInfo tempLV = | |||
517 | getLVForTemplateParameterList(temp->getTemplateParameters(), computation); | |||
518 | LV.mergeMaybeWithVisibility(tempLV, | |||
519 | considerVisibility && !hasExplicitVisibilityAlready(computation)); | |||
520 | ||||
521 | // Merge information from the template arguments. We ignore | |||
522 | // template-argument visibility if we've got an explicit | |||
523 | // instantiation with a visibility attribute. | |||
524 | const TemplateArgumentList &templateArgs = spec->getTemplateArgs(); | |||
525 | LinkageInfo argsLV = getLVForTemplateArgumentList(templateArgs, computation); | |||
526 | if (considerVisibility) | |||
527 | LV.mergeVisibility(argsLV); | |||
528 | LV.mergeExternalVisibility(argsLV); | |||
529 | } | |||
530 | ||||
531 | static bool useInlineVisibilityHidden(const NamedDecl *D) { | |||
532 | // FIXME: we should warn if -fvisibility-inlines-hidden is used with c. | |||
533 | const LangOptions &Opts = D->getASTContext().getLangOpts(); | |||
534 | if (!Opts.CPlusPlus || !Opts.InlineVisibilityHidden) | |||
535 | return false; | |||
536 | ||||
537 | const auto *FD = dyn_cast<FunctionDecl>(D); | |||
538 | if (!FD) | |||
539 | return false; | |||
540 | ||||
541 | TemplateSpecializationKind TSK = TSK_Undeclared; | |||
542 | if (FunctionTemplateSpecializationInfo *spec | |||
543 | = FD->getTemplateSpecializationInfo()) { | |||
544 | TSK = spec->getTemplateSpecializationKind(); | |||
545 | } else if (MemberSpecializationInfo *MSI = | |||
546 | FD->getMemberSpecializationInfo()) { | |||
547 | TSK = MSI->getTemplateSpecializationKind(); | |||
548 | } | |||
549 | ||||
550 | const FunctionDecl *Def = nullptr; | |||
551 | // InlineVisibilityHidden only applies to definitions, and | |||
552 | // isInlined() only gives meaningful answers on definitions | |||
553 | // anyway. | |||
554 | return TSK != TSK_ExplicitInstantiationDeclaration && | |||
555 | TSK != TSK_ExplicitInstantiationDefinition && | |||
556 | FD->hasBody(Def) && Def->isInlined() && !Def->hasAttr<GNUInlineAttr>(); | |||
557 | } | |||
558 | ||||
559 | template <typename T> static bool isFirstInExternCContext(T *D) { | |||
560 | const T *First = D->getFirstDecl(); | |||
561 | return First->isInExternCContext(); | |||
562 | } | |||
563 | ||||
564 | static bool isSingleLineLanguageLinkage(const Decl &D) { | |||
565 | if (const auto *SD = dyn_cast<LinkageSpecDecl>(D.getDeclContext())) | |||
566 | if (!SD->hasBraces()) | |||
567 | return true; | |||
568 | return false; | |||
569 | } | |||
570 | ||||
571 | static bool isExportedFromModuleIntefaceUnit(const NamedDecl *D) { | |||
572 | // FIXME: Handle isModulePrivate. | |||
573 | switch (D->getModuleOwnershipKind()) { | |||
574 | case Decl::ModuleOwnershipKind::Unowned: | |||
575 | case Decl::ModuleOwnershipKind::ModulePrivate: | |||
576 | return false; | |||
577 | case Decl::ModuleOwnershipKind::Visible: | |||
578 | case Decl::ModuleOwnershipKind::VisibleWhenImported: | |||
579 | if (auto *M = D->getOwningModule()) | |||
580 | return M->Kind == Module::ModuleInterfaceUnit; | |||
581 | } | |||
582 | llvm_unreachable("unexpected module ownership kind")::llvm::llvm_unreachable_internal("unexpected module ownership kind" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 582); | |||
583 | } | |||
584 | ||||
585 | static LinkageInfo getInternalLinkageFor(const NamedDecl *D) { | |||
586 | // Internal linkage declarations within a module interface unit are modeled | |||
587 | // as "module-internal linkage", which means that they have internal linkage | |||
588 | // formally but can be indirectly accessed from outside the module via inline | |||
589 | // functions and templates defined within the module. | |||
590 | if (auto *M = D->getOwningModule()) | |||
591 | if (M->Kind == Module::ModuleInterfaceUnit) | |||
592 | return LinkageInfo(ModuleInternalLinkage, DefaultVisibility, false); | |||
593 | ||||
594 | return LinkageInfo::internal(); | |||
595 | } | |||
596 | ||||
597 | static LinkageInfo getExternalLinkageFor(const NamedDecl *D) { | |||
598 | // C++ Modules TS [basic.link]/6.8: | |||
599 | // - A name declared at namespace scope that does not have internal linkage | |||
600 | // by the previous rules and that is introduced by a non-exported | |||
601 | // declaration has module linkage. | |||
602 | if (auto *M = D->getOwningModule()) | |||
603 | if (M->Kind == Module::ModuleInterfaceUnit) | |||
604 | if (!isExportedFromModuleIntefaceUnit( | |||
605 | cast<NamedDecl>(D->getCanonicalDecl()))) | |||
606 | return LinkageInfo(ModuleLinkage, DefaultVisibility, false); | |||
607 | ||||
608 | return LinkageInfo::external(); | |||
609 | } | |||
610 | ||||
611 | LinkageInfo | |||
612 | LinkageComputer::getLVForNamespaceScopeDecl(const NamedDecl *D, | |||
613 | LVComputationKind computation, | |||
614 | bool IgnoreVarTypeLinkage) { | |||
615 | assert(D->getDeclContext()->getRedeclContext()->isFileContext() &&(static_cast <bool> (D->getDeclContext()->getRedeclContext ()->isFileContext() && "Not a name having namespace scope" ) ? void (0) : __assert_fail ("D->getDeclContext()->getRedeclContext()->isFileContext() && \"Not a name having namespace scope\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 616, __extension__ __PRETTY_FUNCTION__)) | |||
616 | "Not a name having namespace scope")(static_cast <bool> (D->getDeclContext()->getRedeclContext ()->isFileContext() && "Not a name having namespace scope" ) ? void (0) : __assert_fail ("D->getDeclContext()->getRedeclContext()->isFileContext() && \"Not a name having namespace scope\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 616, __extension__ __PRETTY_FUNCTION__)); | |||
617 | ASTContext &Context = D->getASTContext(); | |||
618 | ||||
619 | // C++ [basic.link]p3: | |||
620 | // A name having namespace scope (3.3.6) has internal linkage if it | |||
621 | // is the name of | |||
622 | // - an object, reference, function or function template that is | |||
623 | // explicitly declared static; or, | |||
624 | // (This bullet corresponds to C99 6.2.2p3.) | |||
625 | if (const auto *Var = dyn_cast<VarDecl>(D)) { | |||
626 | // Explicitly declared static. | |||
627 | if (Var->getStorageClass() == SC_Static) | |||
628 | return getInternalLinkageFor(Var); | |||
629 | ||||
630 | // - a non-inline, non-volatile object or reference that is explicitly | |||
631 | // declared const or constexpr and neither explicitly declared extern | |||
632 | // nor previously declared to have external linkage; or (there is no | |||
633 | // equivalent in C99) | |||
634 | // The C++ modules TS adds "non-exported" to this list. | |||
635 | if (Context.getLangOpts().CPlusPlus && | |||
636 | Var->getType().isConstQualified() && | |||
637 | !Var->getType().isVolatileQualified() && | |||
638 | !Var->isInline() && | |||
639 | !isExportedFromModuleIntefaceUnit(Var)) { | |||
640 | const VarDecl *PrevVar = Var->getPreviousDecl(); | |||
641 | if (PrevVar) | |||
642 | return getLVForDecl(PrevVar, computation); | |||
643 | ||||
644 | if (Var->getStorageClass() != SC_Extern && | |||
645 | Var->getStorageClass() != SC_PrivateExtern && | |||
646 | !isSingleLineLanguageLinkage(*Var)) | |||
647 | return getInternalLinkageFor(Var); | |||
648 | } | |||
649 | ||||
650 | for (const VarDecl *PrevVar = Var->getPreviousDecl(); PrevVar; | |||
651 | PrevVar = PrevVar->getPreviousDecl()) { | |||
652 | if (PrevVar->getStorageClass() == SC_PrivateExtern && | |||
653 | Var->getStorageClass() == SC_None) | |||
654 | return getDeclLinkageAndVisibility(PrevVar); | |||
655 | // Explicitly declared static. | |||
656 | if (PrevVar->getStorageClass() == SC_Static) | |||
657 | return getInternalLinkageFor(Var); | |||
658 | } | |||
659 | } else if (const FunctionDecl *Function = D->getAsFunction()) { | |||
660 | // C++ [temp]p4: | |||
661 | // A non-member function template can have internal linkage; any | |||
662 | // other template name shall have external linkage. | |||
663 | ||||
664 | // Explicitly declared static. | |||
665 | if (Function->getCanonicalDecl()->getStorageClass() == SC_Static) | |||
666 | return getInternalLinkageFor(Function); | |||
667 | } else if (const auto *IFD = dyn_cast<IndirectFieldDecl>(D)) { | |||
668 | // - a data member of an anonymous union. | |||
669 | const VarDecl *VD = IFD->getVarDecl(); | |||
670 | assert(VD && "Expected a VarDecl in this IndirectFieldDecl!")(static_cast <bool> (VD && "Expected a VarDecl in this IndirectFieldDecl!" ) ? void (0) : __assert_fail ("VD && \"Expected a VarDecl in this IndirectFieldDecl!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 670, __extension__ __PRETTY_FUNCTION__)); | |||
671 | return getLVForNamespaceScopeDecl(VD, computation, IgnoreVarTypeLinkage); | |||
672 | } | |||
673 | assert(!isa<FieldDecl>(D) && "Didn't expect a FieldDecl!")(static_cast <bool> (!isa<FieldDecl>(D) && "Didn't expect a FieldDecl!") ? void (0) : __assert_fail ("!isa<FieldDecl>(D) && \"Didn't expect a FieldDecl!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 673, __extension__ __PRETTY_FUNCTION__)); | |||
674 | ||||
675 | if (D->isInAnonymousNamespace()) { | |||
676 | const auto *Var = dyn_cast<VarDecl>(D); | |||
677 | const auto *Func = dyn_cast<FunctionDecl>(D); | |||
678 | // FIXME: The check for extern "C" here is not justified by the standard | |||
679 | // wording, but we retain it from the pre-DR1113 model to avoid breaking | |||
680 | // code. | |||
681 | // | |||
682 | // C++11 [basic.link]p4: | |||
683 | // An unnamed namespace or a namespace declared directly or indirectly | |||
684 | // within an unnamed namespace has internal linkage. | |||
685 | if ((!Var || !isFirstInExternCContext(Var)) && | |||
686 | (!Func || !isFirstInExternCContext(Func))) | |||
687 | return getInternalLinkageFor(D); | |||
688 | } | |||
689 | ||||
690 | // Set up the defaults. | |||
691 | ||||
692 | // C99 6.2.2p5: | |||
693 | // If the declaration of an identifier for an object has file | |||
694 | // scope and no storage-class specifier, its linkage is | |||
695 | // external. | |||
696 | LinkageInfo LV = getExternalLinkageFor(D); | |||
697 | ||||
698 | if (!hasExplicitVisibilityAlready(computation)) { | |||
699 | if (Optional<Visibility> Vis = getExplicitVisibility(D, computation)) { | |||
700 | LV.mergeVisibility(*Vis, true); | |||
701 | } else { | |||
702 | // If we're declared in a namespace with a visibility attribute, | |||
703 | // use that namespace's visibility, and it still counts as explicit. | |||
704 | for (const DeclContext *DC = D->getDeclContext(); | |||
705 | !isa<TranslationUnitDecl>(DC); | |||
706 | DC = DC->getParent()) { | |||
707 | const auto *ND = dyn_cast<NamespaceDecl>(DC); | |||
708 | if (!ND) continue; | |||
709 | if (Optional<Visibility> Vis = getExplicitVisibility(ND, computation)) { | |||
710 | LV.mergeVisibility(*Vis, true); | |||
711 | break; | |||
712 | } | |||
713 | } | |||
714 | } | |||
715 | ||||
716 | // Add in global settings if the above didn't give us direct visibility. | |||
717 | if (!LV.isVisibilityExplicit()) { | |||
718 | // Use global type/value visibility as appropriate. | |||
719 | Visibility globalVisibility = | |||
720 | computation.isValueVisibility() | |||
721 | ? Context.getLangOpts().getValueVisibilityMode() | |||
722 | : Context.getLangOpts().getTypeVisibilityMode(); | |||
723 | LV.mergeVisibility(globalVisibility, /*explicit*/ false); | |||
724 | ||||
725 | // If we're paying attention to global visibility, apply | |||
726 | // -finline-visibility-hidden if this is an inline method. | |||
727 | if (useInlineVisibilityHidden(D)) | |||
728 | LV.mergeVisibility(HiddenVisibility, true); | |||
729 | } | |||
730 | } | |||
731 | ||||
732 | // C++ [basic.link]p4: | |||
733 | ||||
734 | // A name having namespace scope has external linkage if it is the | |||
735 | // name of | |||
736 | // | |||
737 | // - an object or reference, unless it has internal linkage; or | |||
738 | if (const auto *Var = dyn_cast<VarDecl>(D)) { | |||
739 | // GCC applies the following optimization to variables and static | |||
740 | // data members, but not to functions: | |||
741 | // | |||
742 | // Modify the variable's LV by the LV of its type unless this is | |||
743 | // C or extern "C". This follows from [basic.link]p9: | |||
744 | // A type without linkage shall not be used as the type of a | |||
745 | // variable or function with external linkage unless | |||
746 | // - the entity has C language linkage, or | |||
747 | // - the entity is declared within an unnamed namespace, or | |||
748 | // - the entity is not used or is defined in the same | |||
749 | // translation unit. | |||
750 | // and [basic.link]p10: | |||
751 | // ...the types specified by all declarations referring to a | |||
752 | // given variable or function shall be identical... | |||
753 | // C does not have an equivalent rule. | |||
754 | // | |||
755 | // Ignore this if we've got an explicit attribute; the user | |||
756 | // probably knows what they're doing. | |||
757 | // | |||
758 | // Note that we don't want to make the variable non-external | |||
759 | // because of this, but unique-external linkage suits us. | |||
760 | if (Context.getLangOpts().CPlusPlus && !isFirstInExternCContext(Var) && | |||
761 | !IgnoreVarTypeLinkage) { | |||
762 | LinkageInfo TypeLV = getLVForType(*Var->getType(), computation); | |||
763 | if (!isExternallyVisible(TypeLV.getLinkage())) | |||
764 | return LinkageInfo::uniqueExternal(); | |||
765 | if (!LV.isVisibilityExplicit()) | |||
766 | LV.mergeVisibility(TypeLV); | |||
767 | } | |||
768 | ||||
769 | if (Var->getStorageClass() == SC_PrivateExtern) | |||
770 | LV.mergeVisibility(HiddenVisibility, true); | |||
771 | ||||
772 | // Note that Sema::MergeVarDecl already takes care of implementing | |||
773 | // C99 6.2.2p4 and propagating the visibility attribute, so we don't have | |||
774 | // to do it here. | |||
775 | ||||
776 | // As per function and class template specializations (below), | |||
777 | // consider LV for the template and template arguments. We're at file | |||
778 | // scope, so we do not need to worry about nested specializations. | |||
779 | if (const auto *spec = dyn_cast<VarTemplateSpecializationDecl>(Var)) { | |||
780 | mergeTemplateLV(LV, spec, computation); | |||
781 | } | |||
782 | ||||
783 | // - a function, unless it has internal linkage; or | |||
784 | } else if (const auto *Function = dyn_cast<FunctionDecl>(D)) { | |||
785 | // In theory, we can modify the function's LV by the LV of its | |||
786 | // type unless it has C linkage (see comment above about variables | |||
787 | // for justification). In practice, GCC doesn't do this, so it's | |||
788 | // just too painful to make work. | |||
789 | ||||
790 | if (Function->getStorageClass() == SC_PrivateExtern) | |||
791 | LV.mergeVisibility(HiddenVisibility, true); | |||
792 | ||||
793 | // Note that Sema::MergeCompatibleFunctionDecls already takes care of | |||
794 | // merging storage classes and visibility attributes, so we don't have to | |||
795 | // look at previous decls in here. | |||
796 | ||||
797 | // In C++, then if the type of the function uses a type with | |||
798 | // unique-external linkage, it's not legally usable from outside | |||
799 | // this translation unit. However, we should use the C linkage | |||
800 | // rules instead for extern "C" declarations. | |||
801 | if (Context.getLangOpts().CPlusPlus && !isFirstInExternCContext(Function)) { | |||
802 | // Only look at the type-as-written. Otherwise, deducing the return type | |||
803 | // of a function could change its linkage. | |||
804 | QualType TypeAsWritten = Function->getType(); | |||
805 | if (TypeSourceInfo *TSI = Function->getTypeSourceInfo()) | |||
806 | TypeAsWritten = TSI->getType(); | |||
807 | if (!isExternallyVisible(TypeAsWritten->getLinkage())) | |||
808 | return LinkageInfo::uniqueExternal(); | |||
809 | } | |||
810 | ||||
811 | // Consider LV from the template and the template arguments. | |||
812 | // We're at file scope, so we do not need to worry about nested | |||
813 | // specializations. | |||
814 | if (FunctionTemplateSpecializationInfo *specInfo | |||
815 | = Function->getTemplateSpecializationInfo()) { | |||
816 | mergeTemplateLV(LV, Function, specInfo, computation); | |||
817 | } | |||
818 | ||||
819 | // - a named class (Clause 9), or an unnamed class defined in a | |||
820 | // typedef declaration in which the class has the typedef name | |||
821 | // for linkage purposes (7.1.3); or | |||
822 | // - a named enumeration (7.2), or an unnamed enumeration | |||
823 | // defined in a typedef declaration in which the enumeration | |||
824 | // has the typedef name for linkage purposes (7.1.3); or | |||
825 | } else if (const auto *Tag = dyn_cast<TagDecl>(D)) { | |||
826 | // Unnamed tags have no linkage. | |||
827 | if (!Tag->hasNameForLinkage()) | |||
828 | return LinkageInfo::none(); | |||
829 | ||||
830 | // If this is a class template specialization, consider the | |||
831 | // linkage of the template and template arguments. We're at file | |||
832 | // scope, so we do not need to worry about nested specializations. | |||
833 | if (const auto *spec = dyn_cast<ClassTemplateSpecializationDecl>(Tag)) { | |||
834 | mergeTemplateLV(LV, spec, computation); | |||
835 | } | |||
836 | ||||
837 | // - an enumerator belonging to an enumeration with external linkage; | |||
838 | } else if (isa<EnumConstantDecl>(D)) { | |||
839 | LinkageInfo EnumLV = getLVForDecl(cast<NamedDecl>(D->getDeclContext()), | |||
840 | computation); | |||
841 | if (!isExternalFormalLinkage(EnumLV.getLinkage())) | |||
842 | return LinkageInfo::none(); | |||
843 | LV.merge(EnumLV); | |||
844 | ||||
845 | // - a template, unless it is a function template that has | |||
846 | // internal linkage (Clause 14); | |||
847 | } else if (const auto *temp = dyn_cast<TemplateDecl>(D)) { | |||
848 | bool considerVisibility = !hasExplicitVisibilityAlready(computation); | |||
849 | LinkageInfo tempLV = | |||
850 | getLVForTemplateParameterList(temp->getTemplateParameters(), computation); | |||
851 | LV.mergeMaybeWithVisibility(tempLV, considerVisibility); | |||
852 | ||||
853 | // - a namespace (7.3), unless it is declared within an unnamed | |||
854 | // namespace. | |||
855 | // | |||
856 | // We handled names in anonymous namespaces above. | |||
857 | } else if (isa<NamespaceDecl>(D)) { | |||
858 | return LV; | |||
859 | ||||
860 | // By extension, we assign external linkage to Objective-C | |||
861 | // interfaces. | |||
862 | } else if (isa<ObjCInterfaceDecl>(D)) { | |||
863 | // fallout | |||
864 | ||||
865 | } else if (auto *TD = dyn_cast<TypedefNameDecl>(D)) { | |||
866 | // A typedef declaration has linkage if it gives a type a name for | |||
867 | // linkage purposes. | |||
868 | if (!TD->getAnonDeclWithTypedefName(/*AnyRedecl*/true)) | |||
869 | return LinkageInfo::none(); | |||
870 | ||||
871 | // Everything not covered here has no linkage. | |||
872 | } else { | |||
873 | return LinkageInfo::none(); | |||
874 | } | |||
875 | ||||
876 | // If we ended up with non-externally-visible linkage, visibility should | |||
877 | // always be default. | |||
878 | if (!isExternallyVisible(LV.getLinkage())) | |||
879 | return LinkageInfo(LV.getLinkage(), DefaultVisibility, false); | |||
880 | ||||
881 | return LV; | |||
882 | } | |||
883 | ||||
884 | LinkageInfo | |||
885 | LinkageComputer::getLVForClassMember(const NamedDecl *D, | |||
886 | LVComputationKind computation, | |||
887 | bool IgnoreVarTypeLinkage) { | |||
888 | // Only certain class members have linkage. Note that fields don't | |||
889 | // really have linkage, but it's convenient to say they do for the | |||
890 | // purposes of calculating linkage of pointer-to-data-member | |||
891 | // template arguments. | |||
892 | // | |||
893 | // Templates also don't officially have linkage, but since we ignore | |||
894 | // the C++ standard and look at template arguments when determining | |||
895 | // linkage and visibility of a template specialization, we might hit | |||
896 | // a template template argument that way. If we do, we need to | |||
897 | // consider its linkage. | |||
898 | if (!(isa<CXXMethodDecl>(D) || | |||
899 | isa<VarDecl>(D) || | |||
900 | isa<FieldDecl>(D) || | |||
901 | isa<IndirectFieldDecl>(D) || | |||
902 | isa<TagDecl>(D) || | |||
903 | isa<TemplateDecl>(D))) | |||
904 | return LinkageInfo::none(); | |||
905 | ||||
906 | LinkageInfo LV; | |||
907 | ||||
908 | // If we have an explicit visibility attribute, merge that in. | |||
909 | if (!hasExplicitVisibilityAlready(computation)) { | |||
910 | if (Optional<Visibility> Vis = getExplicitVisibility(D, computation)) | |||
911 | LV.mergeVisibility(*Vis, true); | |||
912 | // If we're paying attention to global visibility, apply | |||
913 | // -finline-visibility-hidden if this is an inline method. | |||
914 | // | |||
915 | // Note that we do this before merging information about | |||
916 | // the class visibility. | |||
917 | if (!LV.isVisibilityExplicit() && useInlineVisibilityHidden(D)) | |||
918 | LV.mergeVisibility(HiddenVisibility, true); | |||
919 | } | |||
920 | ||||
921 | // If this class member has an explicit visibility attribute, the only | |||
922 | // thing that can change its visibility is the template arguments, so | |||
923 | // only look for them when processing the class. | |||
924 | LVComputationKind classComputation = computation; | |||
925 | if (LV.isVisibilityExplicit()) | |||
926 | classComputation = withExplicitVisibilityAlready(computation); | |||
927 | ||||
928 | LinkageInfo classLV = | |||
929 | getLVForDecl(cast<RecordDecl>(D->getDeclContext()), classComputation); | |||
930 | // The member has the same linkage as the class. If that's not externally | |||
931 | // visible, we don't need to compute anything about the linkage. | |||
932 | // FIXME: If we're only computing linkage, can we bail out here? | |||
933 | if (!isExternallyVisible(classLV.getLinkage())) | |||
934 | return classLV; | |||
935 | ||||
936 | ||||
937 | // Otherwise, don't merge in classLV yet, because in certain cases | |||
938 | // we need to completely ignore the visibility from it. | |||
939 | ||||
940 | // Specifically, if this decl exists and has an explicit attribute. | |||
941 | const NamedDecl *explicitSpecSuppressor = nullptr; | |||
942 | ||||
943 | if (const auto *MD = dyn_cast<CXXMethodDecl>(D)) { | |||
944 | // Only look at the type-as-written. Otherwise, deducing the return type | |||
945 | // of a function could change its linkage. | |||
946 | QualType TypeAsWritten = MD->getType(); | |||
947 | if (TypeSourceInfo *TSI = MD->getTypeSourceInfo()) | |||
948 | TypeAsWritten = TSI->getType(); | |||
949 | if (!isExternallyVisible(TypeAsWritten->getLinkage())) | |||
950 | return LinkageInfo::uniqueExternal(); | |||
951 | ||||
952 | // If this is a method template specialization, use the linkage for | |||
953 | // the template parameters and arguments. | |||
954 | if (FunctionTemplateSpecializationInfo *spec | |||
955 | = MD->getTemplateSpecializationInfo()) { | |||
956 | mergeTemplateLV(LV, MD, spec, computation); | |||
957 | if (spec->isExplicitSpecialization()) { | |||
958 | explicitSpecSuppressor = MD; | |||
959 | } else if (isExplicitMemberSpecialization(spec->getTemplate())) { | |||
960 | explicitSpecSuppressor = spec->getTemplate()->getTemplatedDecl(); | |||
961 | } | |||
962 | } else if (isExplicitMemberSpecialization(MD)) { | |||
963 | explicitSpecSuppressor = MD; | |||
964 | } | |||
965 | ||||
966 | } else if (const auto *RD = dyn_cast<CXXRecordDecl>(D)) { | |||
967 | if (const auto *spec = dyn_cast<ClassTemplateSpecializationDecl>(RD)) { | |||
968 | mergeTemplateLV(LV, spec, computation); | |||
969 | if (spec->isExplicitSpecialization()) { | |||
970 | explicitSpecSuppressor = spec; | |||
971 | } else { | |||
972 | const ClassTemplateDecl *temp = spec->getSpecializedTemplate(); | |||
973 | if (isExplicitMemberSpecialization(temp)) { | |||
974 | explicitSpecSuppressor = temp->getTemplatedDecl(); | |||
975 | } | |||
976 | } | |||
977 | } else if (isExplicitMemberSpecialization(RD)) { | |||
978 | explicitSpecSuppressor = RD; | |||
979 | } | |||
980 | ||||
981 | // Static data members. | |||
982 | } else if (const auto *VD = dyn_cast<VarDecl>(D)) { | |||
983 | if (const auto *spec = dyn_cast<VarTemplateSpecializationDecl>(VD)) | |||
984 | mergeTemplateLV(LV, spec, computation); | |||
985 | ||||
986 | // Modify the variable's linkage by its type, but ignore the | |||
987 | // type's visibility unless it's a definition. | |||
988 | if (!IgnoreVarTypeLinkage) { | |||
989 | LinkageInfo typeLV = getLVForType(*VD->getType(), computation); | |||
990 | // FIXME: If the type's linkage is not externally visible, we can | |||
991 | // give this static data member UniqueExternalLinkage. | |||
992 | if (!LV.isVisibilityExplicit() && !classLV.isVisibilityExplicit()) | |||
993 | LV.mergeVisibility(typeLV); | |||
994 | LV.mergeExternalVisibility(typeLV); | |||
995 | } | |||
996 | ||||
997 | if (isExplicitMemberSpecialization(VD)) { | |||
998 | explicitSpecSuppressor = VD; | |||
999 | } | |||
1000 | ||||
1001 | // Template members. | |||
1002 | } else if (const auto *temp = dyn_cast<TemplateDecl>(D)) { | |||
1003 | bool considerVisibility = | |||
1004 | (!LV.isVisibilityExplicit() && | |||
1005 | !classLV.isVisibilityExplicit() && | |||
1006 | !hasExplicitVisibilityAlready(computation)); | |||
1007 | LinkageInfo tempLV = | |||
1008 | getLVForTemplateParameterList(temp->getTemplateParameters(), computation); | |||
1009 | LV.mergeMaybeWithVisibility(tempLV, considerVisibility); | |||
1010 | ||||
1011 | if (const auto *redeclTemp = dyn_cast<RedeclarableTemplateDecl>(temp)) { | |||
1012 | if (isExplicitMemberSpecialization(redeclTemp)) { | |||
1013 | explicitSpecSuppressor = temp->getTemplatedDecl(); | |||
1014 | } | |||
1015 | } | |||
1016 | } | |||
1017 | ||||
1018 | // We should never be looking for an attribute directly on a template. | |||
1019 | assert(!explicitSpecSuppressor || !isa<TemplateDecl>(explicitSpecSuppressor))(static_cast <bool> (!explicitSpecSuppressor || !isa< TemplateDecl>(explicitSpecSuppressor)) ? void (0) : __assert_fail ("!explicitSpecSuppressor || !isa<TemplateDecl>(explicitSpecSuppressor)" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1019, __extension__ __PRETTY_FUNCTION__)); | |||
1020 | ||||
1021 | // If this member is an explicit member specialization, and it has | |||
1022 | // an explicit attribute, ignore visibility from the parent. | |||
1023 | bool considerClassVisibility = true; | |||
1024 | if (explicitSpecSuppressor && | |||
1025 | // optimization: hasDVA() is true only with explicit visibility. | |||
1026 | LV.isVisibilityExplicit() && | |||
1027 | classLV.getVisibility() != DefaultVisibility && | |||
1028 | hasDirectVisibilityAttribute(explicitSpecSuppressor, computation)) { | |||
1029 | considerClassVisibility = false; | |||
1030 | } | |||
1031 | ||||
1032 | // Finally, merge in information from the class. | |||
1033 | LV.mergeMaybeWithVisibility(classLV, considerClassVisibility); | |||
1034 | return LV; | |||
1035 | } | |||
1036 | ||||
1037 | void NamedDecl::anchor() {} | |||
1038 | ||||
1039 | bool NamedDecl::isLinkageValid() const { | |||
1040 | if (!hasCachedLinkage()) | |||
1041 | return true; | |||
1042 | ||||
1043 | Linkage L = LinkageComputer{} | |||
1044 | .computeLVForDecl(this, LVComputationKind::forLinkageOnly()) | |||
1045 | .getLinkage(); | |||
1046 | return L == getCachedLinkage(); | |||
1047 | } | |||
1048 | ||||
1049 | ObjCStringFormatFamily NamedDecl::getObjCFStringFormattingFamily() const { | |||
1050 | StringRef name = getName(); | |||
1051 | if (name.empty()) return SFF_None; | |||
1052 | ||||
1053 | if (name.front() == 'C') | |||
1054 | if (name == "CFStringCreateWithFormat" || | |||
1055 | name == "CFStringCreateWithFormatAndArguments" || | |||
1056 | name == "CFStringAppendFormat" || | |||
1057 | name == "CFStringAppendFormatAndArguments") | |||
1058 | return SFF_CFString; | |||
1059 | return SFF_None; | |||
1060 | } | |||
1061 | ||||
1062 | Linkage NamedDecl::getLinkageInternal() const { | |||
1063 | // We don't care about visibility here, so ask for the cheapest | |||
1064 | // possible visibility analysis. | |||
1065 | return LinkageComputer{} | |||
1066 | .getLVForDecl(this, LVComputationKind::forLinkageOnly()) | |||
1067 | .getLinkage(); | |||
1068 | } | |||
1069 | ||||
1070 | LinkageInfo NamedDecl::getLinkageAndVisibility() const { | |||
1071 | return LinkageComputer{}.getDeclLinkageAndVisibility(this); | |||
1072 | } | |||
1073 | ||||
1074 | static Optional<Visibility> | |||
1075 | getExplicitVisibilityAux(const NamedDecl *ND, | |||
1076 | NamedDecl::ExplicitVisibilityKind kind, | |||
1077 | bool IsMostRecent) { | |||
1078 | assert(!IsMostRecent || ND == ND->getMostRecentDecl())(static_cast <bool> (!IsMostRecent || ND == ND->getMostRecentDecl ()) ? void (0) : __assert_fail ("!IsMostRecent || ND == ND->getMostRecentDecl()" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1078, __extension__ __PRETTY_FUNCTION__)); | |||
1079 | ||||
1080 | // Check the declaration itself first. | |||
1081 | if (Optional<Visibility> V = getVisibilityOf(ND, kind)) | |||
1082 | return V; | |||
1083 | ||||
1084 | // If this is a member class of a specialization of a class template | |||
1085 | // and the corresponding decl has explicit visibility, use that. | |||
1086 | if (const auto *RD = dyn_cast<CXXRecordDecl>(ND)) { | |||
1087 | CXXRecordDecl *InstantiatedFrom = RD->getInstantiatedFromMemberClass(); | |||
1088 | if (InstantiatedFrom) | |||
1089 | return getVisibilityOf(InstantiatedFrom, kind); | |||
1090 | } | |||
1091 | ||||
1092 | // If there wasn't explicit visibility there, and this is a | |||
1093 | // specialization of a class template, check for visibility | |||
1094 | // on the pattern. | |||
1095 | if (const auto *spec = dyn_cast<ClassTemplateSpecializationDecl>(ND)) | |||
1096 | return getVisibilityOf(spec->getSpecializedTemplate()->getTemplatedDecl(), | |||
1097 | kind); | |||
1098 | ||||
1099 | // Use the most recent declaration. | |||
1100 | if (!IsMostRecent && !isa<NamespaceDecl>(ND)) { | |||
1101 | const NamedDecl *MostRecent = ND->getMostRecentDecl(); | |||
1102 | if (MostRecent != ND) | |||
1103 | return getExplicitVisibilityAux(MostRecent, kind, true); | |||
1104 | } | |||
1105 | ||||
1106 | if (const auto *Var = dyn_cast<VarDecl>(ND)) { | |||
1107 | if (Var->isStaticDataMember()) { | |||
1108 | VarDecl *InstantiatedFrom = Var->getInstantiatedFromStaticDataMember(); | |||
1109 | if (InstantiatedFrom) | |||
1110 | return getVisibilityOf(InstantiatedFrom, kind); | |||
1111 | } | |||
1112 | ||||
1113 | if (const auto *VTSD = dyn_cast<VarTemplateSpecializationDecl>(Var)) | |||
1114 | return getVisibilityOf(VTSD->getSpecializedTemplate()->getTemplatedDecl(), | |||
1115 | kind); | |||
1116 | ||||
1117 | return None; | |||
1118 | } | |||
1119 | // Also handle function template specializations. | |||
1120 | if (const auto *fn = dyn_cast<FunctionDecl>(ND)) { | |||
1121 | // If the function is a specialization of a template with an | |||
1122 | // explicit visibility attribute, use that. | |||
1123 | if (FunctionTemplateSpecializationInfo *templateInfo | |||
1124 | = fn->getTemplateSpecializationInfo()) | |||
1125 | return getVisibilityOf(templateInfo->getTemplate()->getTemplatedDecl(), | |||
1126 | kind); | |||
1127 | ||||
1128 | // If the function is a member of a specialization of a class template | |||
1129 | // and the corresponding decl has explicit visibility, use that. | |||
1130 | FunctionDecl *InstantiatedFrom = fn->getInstantiatedFromMemberFunction(); | |||
1131 | if (InstantiatedFrom) | |||
1132 | return getVisibilityOf(InstantiatedFrom, kind); | |||
1133 | ||||
1134 | return None; | |||
1135 | } | |||
1136 | ||||
1137 | // The visibility of a template is stored in the templated decl. | |||
1138 | if (const auto *TD = dyn_cast<TemplateDecl>(ND)) | |||
1139 | return getVisibilityOf(TD->getTemplatedDecl(), kind); | |||
1140 | ||||
1141 | return None; | |||
1142 | } | |||
1143 | ||||
1144 | Optional<Visibility> | |||
1145 | NamedDecl::getExplicitVisibility(ExplicitVisibilityKind kind) const { | |||
1146 | return getExplicitVisibilityAux(this, kind, false); | |||
1147 | } | |||
1148 | ||||
1149 | LinkageInfo LinkageComputer::getLVForClosure(const DeclContext *DC, | |||
1150 | Decl *ContextDecl, | |||
1151 | LVComputationKind computation) { | |||
1152 | // This lambda has its linkage/visibility determined by its owner. | |||
1153 | const NamedDecl *Owner; | |||
1154 | if (!ContextDecl) | |||
1155 | Owner = dyn_cast<NamedDecl>(DC); | |||
1156 | else if (isa<ParmVarDecl>(ContextDecl)) | |||
1157 | Owner = | |||
1158 | dyn_cast<NamedDecl>(ContextDecl->getDeclContext()->getRedeclContext()); | |||
1159 | else | |||
1160 | Owner = cast<NamedDecl>(ContextDecl); | |||
1161 | ||||
1162 | if (!Owner) | |||
1163 | return LinkageInfo::none(); | |||
1164 | ||||
1165 | // If the owner has a deduced type, we need to skip querying the linkage and | |||
1166 | // visibility of that type, because it might involve this closure type. The | |||
1167 | // only effect of this is that we might give a lambda VisibleNoLinkage rather | |||
1168 | // than NoLinkage when we don't strictly need to, which is benign. | |||
1169 | auto *VD = dyn_cast<VarDecl>(Owner); | |||
1170 | LinkageInfo OwnerLV = | |||
1171 | VD && VD->getType()->getContainedDeducedType() | |||
1172 | ? computeLVForDecl(Owner, computation, /*IgnoreVarTypeLinkage*/true) | |||
1173 | : getLVForDecl(Owner, computation); | |||
1174 | ||||
1175 | // A lambda never formally has linkage. But if the owner is externally | |||
1176 | // visible, then the lambda is too. We apply the same rules to blocks. | |||
1177 | if (!isExternallyVisible(OwnerLV.getLinkage())) | |||
1178 | return LinkageInfo::none(); | |||
1179 | return LinkageInfo(VisibleNoLinkage, OwnerLV.getVisibility(), | |||
1180 | OwnerLV.isVisibilityExplicit()); | |||
1181 | } | |||
1182 | ||||
1183 | LinkageInfo LinkageComputer::getLVForLocalDecl(const NamedDecl *D, | |||
1184 | LVComputationKind computation) { | |||
1185 | if (const auto *Function = dyn_cast<FunctionDecl>(D)) { | |||
1186 | if (Function->isInAnonymousNamespace() && | |||
1187 | !isFirstInExternCContext(Function)) | |||
1188 | return getInternalLinkageFor(Function); | |||
1189 | ||||
1190 | // This is a "void f();" which got merged with a file static. | |||
1191 | if (Function->getCanonicalDecl()->getStorageClass() == SC_Static) | |||
1192 | return getInternalLinkageFor(Function); | |||
1193 | ||||
1194 | LinkageInfo LV; | |||
1195 | if (!hasExplicitVisibilityAlready(computation)) { | |||
1196 | if (Optional<Visibility> Vis = | |||
1197 | getExplicitVisibility(Function, computation)) | |||
1198 | LV.mergeVisibility(*Vis, true); | |||
1199 | } | |||
1200 | ||||
1201 | // Note that Sema::MergeCompatibleFunctionDecls already takes care of | |||
1202 | // merging storage classes and visibility attributes, so we don't have to | |||
1203 | // look at previous decls in here. | |||
1204 | ||||
1205 | return LV; | |||
1206 | } | |||
1207 | ||||
1208 | if (const auto *Var = dyn_cast<VarDecl>(D)) { | |||
1209 | if (Var->hasExternalStorage()) { | |||
1210 | if (Var->isInAnonymousNamespace() && !isFirstInExternCContext(Var)) | |||
1211 | return getInternalLinkageFor(Var); | |||
1212 | ||||
1213 | LinkageInfo LV; | |||
1214 | if (Var->getStorageClass() == SC_PrivateExtern) | |||
1215 | LV.mergeVisibility(HiddenVisibility, true); | |||
1216 | else if (!hasExplicitVisibilityAlready(computation)) { | |||
1217 | if (Optional<Visibility> Vis = getExplicitVisibility(Var, computation)) | |||
1218 | LV.mergeVisibility(*Vis, true); | |||
1219 | } | |||
1220 | ||||
1221 | if (const VarDecl *Prev = Var->getPreviousDecl()) { | |||
1222 | LinkageInfo PrevLV = getLVForDecl(Prev, computation); | |||
1223 | if (PrevLV.getLinkage()) | |||
1224 | LV.setLinkage(PrevLV.getLinkage()); | |||
1225 | LV.mergeVisibility(PrevLV); | |||
1226 | } | |||
1227 | ||||
1228 | return LV; | |||
1229 | } | |||
1230 | ||||
1231 | if (!Var->isStaticLocal()) | |||
1232 | return LinkageInfo::none(); | |||
1233 | } | |||
1234 | ||||
1235 | ASTContext &Context = D->getASTContext(); | |||
1236 | if (!Context.getLangOpts().CPlusPlus) | |||
1237 | return LinkageInfo::none(); | |||
1238 | ||||
1239 | const Decl *OuterD = getOutermostFuncOrBlockContext(D); | |||
1240 | if (!OuterD || OuterD->isInvalidDecl()) | |||
1241 | return LinkageInfo::none(); | |||
1242 | ||||
1243 | LinkageInfo LV; | |||
1244 | if (const auto *BD = dyn_cast<BlockDecl>(OuterD)) { | |||
1245 | if (!BD->getBlockManglingNumber()) | |||
1246 | return LinkageInfo::none(); | |||
1247 | ||||
1248 | LV = getLVForClosure(BD->getDeclContext()->getRedeclContext(), | |||
1249 | BD->getBlockManglingContextDecl(), computation); | |||
1250 | } else { | |||
1251 | const auto *FD = cast<FunctionDecl>(OuterD); | |||
1252 | if (!FD->isInlined() && | |||
1253 | !isTemplateInstantiation(FD->getTemplateSpecializationKind())) | |||
1254 | return LinkageInfo::none(); | |||
1255 | ||||
1256 | LV = getLVForDecl(FD, computation); | |||
1257 | } | |||
1258 | if (!isExternallyVisible(LV.getLinkage())) | |||
1259 | return LinkageInfo::none(); | |||
1260 | return LinkageInfo(VisibleNoLinkage, LV.getVisibility(), | |||
1261 | LV.isVisibilityExplicit()); | |||
1262 | } | |||
1263 | ||||
1264 | static inline const CXXRecordDecl* | |||
1265 | getOutermostEnclosingLambda(const CXXRecordDecl *Record) { | |||
1266 | const CXXRecordDecl *Ret = Record; | |||
1267 | while (Record && Record->isLambda()) { | |||
1268 | Ret = Record; | |||
1269 | if (!Record->getParent()) break; | |||
1270 | // Get the Containing Class of this Lambda Class | |||
1271 | Record = dyn_cast_or_null<CXXRecordDecl>( | |||
1272 | Record->getParent()->getParent()); | |||
1273 | } | |||
1274 | return Ret; | |||
1275 | } | |||
1276 | ||||
1277 | LinkageInfo LinkageComputer::computeLVForDecl(const NamedDecl *D, | |||
1278 | LVComputationKind computation, | |||
1279 | bool IgnoreVarTypeLinkage) { | |||
1280 | // Internal_linkage attribute overrides other considerations. | |||
1281 | if (D->hasAttr<InternalLinkageAttr>()) | |||
1282 | return getInternalLinkageFor(D); | |||
1283 | ||||
1284 | // Objective-C: treat all Objective-C declarations as having external | |||
1285 | // linkage. | |||
1286 | switch (D->getKind()) { | |||
1287 | default: | |||
1288 | break; | |||
1289 | ||||
1290 | // Per C++ [basic.link]p2, only the names of objects, references, | |||
1291 | // functions, types, templates, namespaces, and values ever have linkage. | |||
1292 | // | |||
1293 | // Note that the name of a typedef, namespace alias, using declaration, | |||
1294 | // and so on are not the name of the corresponding type, namespace, or | |||
1295 | // declaration, so they do *not* have linkage. | |||
1296 | case Decl::ImplicitParam: | |||
1297 | case Decl::Label: | |||
1298 | case Decl::NamespaceAlias: | |||
1299 | case Decl::ParmVar: | |||
1300 | case Decl::Using: | |||
1301 | case Decl::UsingShadow: | |||
1302 | case Decl::UsingDirective: | |||
1303 | return LinkageInfo::none(); | |||
1304 | ||||
1305 | case Decl::EnumConstant: | |||
1306 | // C++ [basic.link]p4: an enumerator has the linkage of its enumeration. | |||
1307 | if (D->getASTContext().getLangOpts().CPlusPlus) | |||
1308 | return getLVForDecl(cast<EnumDecl>(D->getDeclContext()), computation); | |||
1309 | return LinkageInfo::visible_none(); | |||
1310 | ||||
1311 | case Decl::Typedef: | |||
1312 | case Decl::TypeAlias: | |||
1313 | // A typedef declaration has linkage if it gives a type a name for | |||
1314 | // linkage purposes. | |||
1315 | if (!cast<TypedefNameDecl>(D) | |||
1316 | ->getAnonDeclWithTypedefName(/*AnyRedecl*/true)) | |||
1317 | return LinkageInfo::none(); | |||
1318 | break; | |||
1319 | ||||
1320 | case Decl::TemplateTemplateParm: // count these as external | |||
1321 | case Decl::NonTypeTemplateParm: | |||
1322 | case Decl::ObjCAtDefsField: | |||
1323 | case Decl::ObjCCategory: | |||
1324 | case Decl::ObjCCategoryImpl: | |||
1325 | case Decl::ObjCCompatibleAlias: | |||
1326 | case Decl::ObjCImplementation: | |||
1327 | case Decl::ObjCMethod: | |||
1328 | case Decl::ObjCProperty: | |||
1329 | case Decl::ObjCPropertyImpl: | |||
1330 | case Decl::ObjCProtocol: | |||
1331 | return getExternalLinkageFor(D); | |||
1332 | ||||
1333 | case Decl::CXXRecord: { | |||
1334 | const auto *Record = cast<CXXRecordDecl>(D); | |||
1335 | if (Record->isLambda()) { | |||
1336 | if (!Record->getLambdaManglingNumber()) { | |||
1337 | // This lambda has no mangling number, so it's internal. | |||
1338 | return getInternalLinkageFor(D); | |||
1339 | } | |||
1340 | ||||
1341 | // This lambda has its linkage/visibility determined: | |||
1342 | // - either by the outermost lambda if that lambda has no mangling | |||
1343 | // number. | |||
1344 | // - or by the parent of the outer most lambda | |||
1345 | // This prevents infinite recursion in settings such as nested lambdas | |||
1346 | // used in NSDMI's, for e.g. | |||
1347 | // struct L { | |||
1348 | // int t{}; | |||
1349 | // int t2 = ([](int a) { return [](int b) { return b; };})(t)(t); | |||
1350 | // }; | |||
1351 | const CXXRecordDecl *OuterMostLambda = | |||
1352 | getOutermostEnclosingLambda(Record); | |||
1353 | if (!OuterMostLambda->getLambdaManglingNumber()) | |||
1354 | return getInternalLinkageFor(D); | |||
1355 | ||||
1356 | return getLVForClosure( | |||
1357 | OuterMostLambda->getDeclContext()->getRedeclContext(), | |||
1358 | OuterMostLambda->getLambdaContextDecl(), computation); | |||
1359 | } | |||
1360 | ||||
1361 | break; | |||
1362 | } | |||
1363 | } | |||
1364 | ||||
1365 | // Handle linkage for namespace-scope names. | |||
1366 | if (D->getDeclContext()->getRedeclContext()->isFileContext()) | |||
1367 | return getLVForNamespaceScopeDecl(D, computation, IgnoreVarTypeLinkage); | |||
1368 | ||||
1369 | // C++ [basic.link]p5: | |||
1370 | // In addition, a member function, static data member, a named | |||
1371 | // class or enumeration of class scope, or an unnamed class or | |||
1372 | // enumeration defined in a class-scope typedef declaration such | |||
1373 | // that the class or enumeration has the typedef name for linkage | |||
1374 | // purposes (7.1.3), has external linkage if the name of the class | |||
1375 | // has external linkage. | |||
1376 | if (D->getDeclContext()->isRecord()) | |||
1377 | return getLVForClassMember(D, computation, IgnoreVarTypeLinkage); | |||
1378 | ||||
1379 | // C++ [basic.link]p6: | |||
1380 | // The name of a function declared in block scope and the name of | |||
1381 | // an object declared by a block scope extern declaration have | |||
1382 | // linkage. If there is a visible declaration of an entity with | |||
1383 | // linkage having the same name and type, ignoring entities | |||
1384 | // declared outside the innermost enclosing namespace scope, the | |||
1385 | // block scope declaration declares that same entity and receives | |||
1386 | // the linkage of the previous declaration. If there is more than | |||
1387 | // one such matching entity, the program is ill-formed. Otherwise, | |||
1388 | // if no matching entity is found, the block scope entity receives | |||
1389 | // external linkage. | |||
1390 | if (D->getDeclContext()->isFunctionOrMethod()) | |||
1391 | return getLVForLocalDecl(D, computation); | |||
1392 | ||||
1393 | // C++ [basic.link]p6: | |||
1394 | // Names not covered by these rules have no linkage. | |||
1395 | return LinkageInfo::none(); | |||
1396 | } | |||
1397 | ||||
1398 | /// getLVForDecl - Get the linkage and visibility for the given declaration. | |||
1399 | LinkageInfo LinkageComputer::getLVForDecl(const NamedDecl *D, | |||
1400 | LVComputationKind computation) { | |||
1401 | // Internal_linkage attribute overrides other considerations. | |||
1402 | if (D->hasAttr<InternalLinkageAttr>()) | |||
1403 | return getInternalLinkageFor(D); | |||
1404 | ||||
1405 | if (computation.IgnoreAllVisibility && D->hasCachedLinkage()) | |||
1406 | return LinkageInfo(D->getCachedLinkage(), DefaultVisibility, false); | |||
1407 | ||||
1408 | if (llvm::Optional<LinkageInfo> LI = lookup(D, computation)) | |||
1409 | return *LI; | |||
1410 | ||||
1411 | LinkageInfo LV = computeLVForDecl(D, computation); | |||
1412 | if (D->hasCachedLinkage()) | |||
1413 | assert(D->getCachedLinkage() == LV.getLinkage())(static_cast <bool> (D->getCachedLinkage() == LV.getLinkage ()) ? void (0) : __assert_fail ("D->getCachedLinkage() == LV.getLinkage()" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1413, __extension__ __PRETTY_FUNCTION__)); | |||
1414 | ||||
1415 | D->setCachedLinkage(LV.getLinkage()); | |||
1416 | cache(D, computation, LV); | |||
1417 | ||||
1418 | #ifndef NDEBUG | |||
1419 | // In C (because of gnu inline) and in c++ with microsoft extensions an | |||
1420 | // static can follow an extern, so we can have two decls with different | |||
1421 | // linkages. | |||
1422 | const LangOptions &Opts = D->getASTContext().getLangOpts(); | |||
1423 | if (!Opts.CPlusPlus || Opts.MicrosoftExt) | |||
1424 | return LV; | |||
1425 | ||||
1426 | // We have just computed the linkage for this decl. By induction we know | |||
1427 | // that all other computed linkages match, check that the one we just | |||
1428 | // computed also does. | |||
1429 | NamedDecl *Old = nullptr; | |||
1430 | for (auto I : D->redecls()) { | |||
1431 | auto *T = cast<NamedDecl>(I); | |||
1432 | if (T == D) | |||
1433 | continue; | |||
1434 | if (!T->isInvalidDecl() && T->hasCachedLinkage()) { | |||
1435 | Old = T; | |||
1436 | break; | |||
1437 | } | |||
1438 | } | |||
1439 | assert(!Old || Old->getCachedLinkage() == D->getCachedLinkage())(static_cast <bool> (!Old || Old->getCachedLinkage() == D->getCachedLinkage()) ? void (0) : __assert_fail ("!Old || Old->getCachedLinkage() == D->getCachedLinkage()" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1439, __extension__ __PRETTY_FUNCTION__)); | |||
1440 | #endif | |||
1441 | ||||
1442 | return LV; | |||
1443 | } | |||
1444 | ||||
1445 | LinkageInfo LinkageComputer::getDeclLinkageAndVisibility(const NamedDecl *D) { | |||
1446 | return getLVForDecl(D, | |||
1447 | LVComputationKind(usesTypeVisibility(D) | |||
1448 | ? NamedDecl::VisibilityForType | |||
1449 | : NamedDecl::VisibilityForValue)); | |||
1450 | } | |||
1451 | ||||
1452 | Module *Decl::getOwningModuleForLinkage(bool IgnoreLinkage) const { | |||
1453 | Module *M = getOwningModule(); | |||
1454 | if (!M) | |||
1455 | return nullptr; | |||
1456 | ||||
1457 | switch (M->Kind) { | |||
1458 | case Module::ModuleMapModule: | |||
1459 | // Module map modules have no special linkage semantics. | |||
1460 | return nullptr; | |||
1461 | ||||
1462 | case Module::ModuleInterfaceUnit: | |||
1463 | return M; | |||
1464 | ||||
1465 | case Module::GlobalModuleFragment: { | |||
1466 | // External linkage declarations in the global module have no owning module | |||
1467 | // for linkage purposes. But internal linkage declarations in the global | |||
1468 | // module fragment of a particular module are owned by that module for | |||
1469 | // linkage purposes. | |||
1470 | if (IgnoreLinkage) | |||
1471 | return nullptr; | |||
1472 | bool InternalLinkage; | |||
1473 | if (auto *ND = dyn_cast<NamedDecl>(this)) | |||
1474 | InternalLinkage = !ND->hasExternalFormalLinkage(); | |||
1475 | else { | |||
1476 | auto *NSD = dyn_cast<NamespaceDecl>(this); | |||
1477 | InternalLinkage = (NSD && NSD->isAnonymousNamespace()) || | |||
1478 | isInAnonymousNamespace(); | |||
1479 | } | |||
1480 | return InternalLinkage ? M->Parent : nullptr; | |||
1481 | } | |||
1482 | } | |||
1483 | ||||
1484 | llvm_unreachable("unknown module kind")::llvm::llvm_unreachable_internal("unknown module kind", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1484); | |||
1485 | } | |||
1486 | ||||
1487 | void NamedDecl::printName(raw_ostream &os) const { | |||
1488 | os << Name; | |||
1489 | } | |||
1490 | ||||
1491 | std::string NamedDecl::getQualifiedNameAsString() const { | |||
1492 | std::string QualName; | |||
1493 | llvm::raw_string_ostream OS(QualName); | |||
1494 | printQualifiedName(OS, getASTContext().getPrintingPolicy()); | |||
1495 | return OS.str(); | |||
1496 | } | |||
1497 | ||||
1498 | void NamedDecl::printQualifiedName(raw_ostream &OS) const { | |||
1499 | printQualifiedName(OS, getASTContext().getPrintingPolicy()); | |||
1500 | } | |||
1501 | ||||
1502 | void NamedDecl::printQualifiedName(raw_ostream &OS, | |||
1503 | const PrintingPolicy &P) const { | |||
1504 | const DeclContext *Ctx = getDeclContext(); | |||
1505 | ||||
1506 | // For ObjC methods, look through categories and use the interface as context. | |||
1507 | if (auto *MD = dyn_cast<ObjCMethodDecl>(this)) | |||
1508 | if (auto *ID = MD->getClassInterface()) | |||
1509 | Ctx = ID; | |||
1510 | ||||
1511 | if (Ctx->isFunctionOrMethod()) { | |||
1512 | printName(OS); | |||
1513 | return; | |||
1514 | } | |||
1515 | ||||
1516 | using ContextsTy = SmallVector<const DeclContext *, 8>; | |||
1517 | ContextsTy Contexts; | |||
1518 | ||||
1519 | // Collect named contexts. | |||
1520 | while (Ctx) { | |||
1521 | if (isa<NamedDecl>(Ctx)) | |||
1522 | Contexts.push_back(Ctx); | |||
1523 | Ctx = Ctx->getParent(); | |||
1524 | } | |||
1525 | ||||
1526 | for (const DeclContext *DC : llvm::reverse(Contexts)) { | |||
1527 | if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(DC)) { | |||
1528 | OS << Spec->getName(); | |||
1529 | const TemplateArgumentList &TemplateArgs = Spec->getTemplateArgs(); | |||
1530 | printTemplateArgumentList(OS, TemplateArgs.asArray(), P); | |||
1531 | } else if (const auto *ND = dyn_cast<NamespaceDecl>(DC)) { | |||
1532 | if (P.SuppressUnwrittenScope && | |||
1533 | (ND->isAnonymousNamespace() || ND->isInline())) | |||
1534 | continue; | |||
1535 | if (ND->isAnonymousNamespace()) { | |||
1536 | OS << (P.MSVCFormatting ? "`anonymous namespace\'" | |||
1537 | : "(anonymous namespace)"); | |||
1538 | } | |||
1539 | else | |||
1540 | OS << *ND; | |||
1541 | } else if (const auto *RD = dyn_cast<RecordDecl>(DC)) { | |||
1542 | if (!RD->getIdentifier()) | |||
1543 | OS << "(anonymous " << RD->getKindName() << ')'; | |||
1544 | else | |||
1545 | OS << *RD; | |||
1546 | } else if (const auto *FD = dyn_cast<FunctionDecl>(DC)) { | |||
1547 | const FunctionProtoType *FT = nullptr; | |||
1548 | if (FD->hasWrittenPrototype()) | |||
1549 | FT = dyn_cast<FunctionProtoType>(FD->getType()->castAs<FunctionType>()); | |||
1550 | ||||
1551 | OS << *FD << '('; | |||
1552 | if (FT) { | |||
1553 | unsigned NumParams = FD->getNumParams(); | |||
1554 | for (unsigned i = 0; i < NumParams; ++i) { | |||
1555 | if (i) | |||
1556 | OS << ", "; | |||
1557 | OS << FD->getParamDecl(i)->getType().stream(P); | |||
1558 | } | |||
1559 | ||||
1560 | if (FT->isVariadic()) { | |||
1561 | if (NumParams > 0) | |||
1562 | OS << ", "; | |||
1563 | OS << "..."; | |||
1564 | } | |||
1565 | } | |||
1566 | OS << ')'; | |||
1567 | } else if (const auto *ED = dyn_cast<EnumDecl>(DC)) { | |||
1568 | // C++ [dcl.enum]p10: Each enum-name and each unscoped | |||
1569 | // enumerator is declared in the scope that immediately contains | |||
1570 | // the enum-specifier. Each scoped enumerator is declared in the | |||
1571 | // scope of the enumeration. | |||
1572 | // For the case of unscoped enumerator, do not include in the qualified | |||
1573 | // name any information about its enum enclosing scope, as its visibility | |||
1574 | // is global. | |||
1575 | if (ED->isScoped()) | |||
1576 | OS << *ED; | |||
1577 | else | |||
1578 | continue; | |||
1579 | } else { | |||
1580 | OS << *cast<NamedDecl>(DC); | |||
1581 | } | |||
1582 | OS << "::"; | |||
1583 | } | |||
1584 | ||||
1585 | if (getDeclName() || isa<DecompositionDecl>(this)) | |||
1586 | OS << *this; | |||
1587 | else | |||
1588 | OS << "(anonymous)"; | |||
1589 | } | |||
1590 | ||||
1591 | void NamedDecl::getNameForDiagnostic(raw_ostream &OS, | |||
1592 | const PrintingPolicy &Policy, | |||
1593 | bool Qualified) const { | |||
1594 | if (Qualified) | |||
1595 | printQualifiedName(OS, Policy); | |||
1596 | else | |||
1597 | printName(OS); | |||
1598 | } | |||
1599 | ||||
1600 | template<typename T> static bool isRedeclarableImpl(Redeclarable<T> *) { | |||
1601 | return true; | |||
1602 | } | |||
1603 | static bool isRedeclarableImpl(...) { return false; } | |||
1604 | static bool isRedeclarable(Decl::Kind K) { | |||
1605 | switch (K) { | |||
1606 | #define DECL(Type, Base) \ | |||
1607 | case Decl::Type: \ | |||
1608 | return isRedeclarableImpl((Type##Decl *)nullptr); | |||
1609 | #define ABSTRACT_DECL(DECL) | |||
1610 | #include "clang/AST/DeclNodes.inc" | |||
1611 | } | |||
1612 | llvm_unreachable("unknown decl kind")::llvm::llvm_unreachable_internal("unknown decl kind", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1612); | |||
1613 | } | |||
1614 | ||||
1615 | bool NamedDecl::declarationReplaces(NamedDecl *OldD, bool IsKnownNewer) const { | |||
1616 | assert(getDeclName() == OldD->getDeclName() && "Declaration name mismatch")(static_cast <bool> (getDeclName() == OldD->getDeclName () && "Declaration name mismatch") ? void (0) : __assert_fail ("getDeclName() == OldD->getDeclName() && \"Declaration name mismatch\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1616, __extension__ __PRETTY_FUNCTION__)); | |||
1617 | ||||
1618 | // Never replace one imported declaration with another; we need both results | |||
1619 | // when re-exporting. | |||
1620 | if (OldD->isFromASTFile() && isFromASTFile()) | |||
1621 | return false; | |||
1622 | ||||
1623 | // A kind mismatch implies that the declaration is not replaced. | |||
1624 | if (OldD->getKind() != getKind()) | |||
1625 | return false; | |||
1626 | ||||
1627 | // For method declarations, we never replace. (Why?) | |||
1628 | if (isa<ObjCMethodDecl>(this)) | |||
1629 | return false; | |||
1630 | ||||
1631 | // For parameters, pick the newer one. This is either an error or (in | |||
1632 | // Objective-C) permitted as an extension. | |||
1633 | if (isa<ParmVarDecl>(this)) | |||
1634 | return true; | |||
1635 | ||||
1636 | // Inline namespaces can give us two declarations with the same | |||
1637 | // name and kind in the same scope but different contexts; we should | |||
1638 | // keep both declarations in this case. | |||
1639 | if (!this->getDeclContext()->getRedeclContext()->Equals( | |||
1640 | OldD->getDeclContext()->getRedeclContext())) | |||
1641 | return false; | |||
1642 | ||||
1643 | // Using declarations can be replaced if they import the same name from the | |||
1644 | // same context. | |||
1645 | if (auto *UD = dyn_cast<UsingDecl>(this)) { | |||
1646 | ASTContext &Context = getASTContext(); | |||
1647 | return Context.getCanonicalNestedNameSpecifier(UD->getQualifier()) == | |||
1648 | Context.getCanonicalNestedNameSpecifier( | |||
1649 | cast<UsingDecl>(OldD)->getQualifier()); | |||
1650 | } | |||
1651 | if (auto *UUVD = dyn_cast<UnresolvedUsingValueDecl>(this)) { | |||
1652 | ASTContext &Context = getASTContext(); | |||
1653 | return Context.getCanonicalNestedNameSpecifier(UUVD->getQualifier()) == | |||
1654 | Context.getCanonicalNestedNameSpecifier( | |||
1655 | cast<UnresolvedUsingValueDecl>(OldD)->getQualifier()); | |||
1656 | } | |||
1657 | ||||
1658 | if (isRedeclarable(getKind())) { | |||
1659 | if (getCanonicalDecl() != OldD->getCanonicalDecl()) | |||
1660 | return false; | |||
1661 | ||||
1662 | if (IsKnownNewer) | |||
1663 | return true; | |||
1664 | ||||
1665 | // Check whether this is actually newer than OldD. We want to keep the | |||
1666 | // newer declaration. This loop will usually only iterate once, because | |||
1667 | // OldD is usually the previous declaration. | |||
1668 | for (auto D : redecls()) { | |||
1669 | if (D == OldD) | |||
1670 | break; | |||
1671 | ||||
1672 | // If we reach the canonical declaration, then OldD is not actually older | |||
1673 | // than this one. | |||
1674 | // | |||
1675 | // FIXME: In this case, we should not add this decl to the lookup table. | |||
1676 | if (D->isCanonicalDecl()) | |||
1677 | return false; | |||
1678 | } | |||
1679 | ||||
1680 | // It's a newer declaration of the same kind of declaration in the same | |||
1681 | // scope: we want this decl instead of the existing one. | |||
1682 | return true; | |||
1683 | } | |||
1684 | ||||
1685 | // In all other cases, we need to keep both declarations in case they have | |||
1686 | // different visibility. Any attempt to use the name will result in an | |||
1687 | // ambiguity if more than one is visible. | |||
1688 | return false; | |||
1689 | } | |||
1690 | ||||
1691 | bool NamedDecl::hasLinkage() const { | |||
1692 | return getFormalLinkage() != NoLinkage; | |||
1693 | } | |||
1694 | ||||
1695 | NamedDecl *NamedDecl::getUnderlyingDeclImpl() { | |||
1696 | NamedDecl *ND = this; | |||
1697 | while (auto *UD = dyn_cast<UsingShadowDecl>(ND)) | |||
1698 | ND = UD->getTargetDecl(); | |||
1699 | ||||
1700 | if (auto *AD = dyn_cast<ObjCCompatibleAliasDecl>(ND)) | |||
1701 | return AD->getClassInterface(); | |||
1702 | ||||
1703 | if (auto *AD = dyn_cast<NamespaceAliasDecl>(ND)) | |||
1704 | return AD->getNamespace(); | |||
1705 | ||||
1706 | return ND; | |||
1707 | } | |||
1708 | ||||
1709 | bool NamedDecl::isCXXInstanceMember() const { | |||
1710 | if (!isCXXClassMember()) | |||
1711 | return false; | |||
1712 | ||||
1713 | const NamedDecl *D = this; | |||
1714 | if (isa<UsingShadowDecl>(D)) | |||
1715 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); | |||
1716 | ||||
1717 | if (isa<FieldDecl>(D) || isa<IndirectFieldDecl>(D) || isa<MSPropertyDecl>(D)) | |||
1718 | return true; | |||
1719 | if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(D->getAsFunction())) | |||
1720 | return MD->isInstance(); | |||
1721 | return false; | |||
1722 | } | |||
1723 | ||||
1724 | //===----------------------------------------------------------------------===// | |||
1725 | // DeclaratorDecl Implementation | |||
1726 | //===----------------------------------------------------------------------===// | |||
1727 | ||||
1728 | template <typename DeclT> | |||
1729 | static SourceLocation getTemplateOrInnerLocStart(const DeclT *decl) { | |||
1730 | if (decl->getNumTemplateParameterLists() > 0) | |||
1731 | return decl->getTemplateParameterList(0)->getTemplateLoc(); | |||
1732 | else | |||
1733 | return decl->getInnerLocStart(); | |||
1734 | } | |||
1735 | ||||
1736 | SourceLocation DeclaratorDecl::getTypeSpecStartLoc() const { | |||
1737 | TypeSourceInfo *TSI = getTypeSourceInfo(); | |||
1738 | if (TSI) return TSI->getTypeLoc().getBeginLoc(); | |||
1739 | return SourceLocation(); | |||
1740 | } | |||
1741 | ||||
1742 | void DeclaratorDecl::setQualifierInfo(NestedNameSpecifierLoc QualifierLoc) { | |||
1743 | if (QualifierLoc) { | |||
1744 | // Make sure the extended decl info is allocated. | |||
1745 | if (!hasExtInfo()) { | |||
1746 | // Save (non-extended) type source info pointer. | |||
1747 | auto *savedTInfo = DeclInfo.get<TypeSourceInfo*>(); | |||
1748 | // Allocate external info struct. | |||
1749 | DeclInfo = new (getASTContext()) ExtInfo; | |||
1750 | // Restore savedTInfo into (extended) decl info. | |||
1751 | getExtInfo()->TInfo = savedTInfo; | |||
1752 | } | |||
1753 | // Set qualifier info. | |||
1754 | getExtInfo()->QualifierLoc = QualifierLoc; | |||
1755 | } else { | |||
1756 | // Here Qualifier == 0, i.e., we are removing the qualifier (if any). | |||
1757 | if (hasExtInfo()) { | |||
1758 | if (getExtInfo()->NumTemplParamLists == 0) { | |||
1759 | // Save type source info pointer. | |||
1760 | TypeSourceInfo *savedTInfo = getExtInfo()->TInfo; | |||
1761 | // Deallocate the extended decl info. | |||
1762 | getASTContext().Deallocate(getExtInfo()); | |||
1763 | // Restore savedTInfo into (non-extended) decl info. | |||
1764 | DeclInfo = savedTInfo; | |||
1765 | } | |||
1766 | else | |||
1767 | getExtInfo()->QualifierLoc = QualifierLoc; | |||
1768 | } | |||
1769 | } | |||
1770 | } | |||
1771 | ||||
1772 | void DeclaratorDecl::setTemplateParameterListsInfo( | |||
1773 | ASTContext &Context, ArrayRef<TemplateParameterList *> TPLists) { | |||
1774 | assert(!TPLists.empty())(static_cast <bool> (!TPLists.empty()) ? void (0) : __assert_fail ("!TPLists.empty()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1774, __extension__ __PRETTY_FUNCTION__)); | |||
1775 | // Make sure the extended decl info is allocated. | |||
1776 | if (!hasExtInfo()) { | |||
1777 | // Save (non-extended) type source info pointer. | |||
1778 | auto *savedTInfo = DeclInfo.get<TypeSourceInfo*>(); | |||
1779 | // Allocate external info struct. | |||
1780 | DeclInfo = new (getASTContext()) ExtInfo; | |||
1781 | // Restore savedTInfo into (extended) decl info. | |||
1782 | getExtInfo()->TInfo = savedTInfo; | |||
1783 | } | |||
1784 | // Set the template parameter lists info. | |||
1785 | getExtInfo()->setTemplateParameterListsInfo(Context, TPLists); | |||
1786 | } | |||
1787 | ||||
1788 | SourceLocation DeclaratorDecl::getOuterLocStart() const { | |||
1789 | return getTemplateOrInnerLocStart(this); | |||
1790 | } | |||
1791 | ||||
1792 | // Helper function: returns true if QT is or contains a type | |||
1793 | // having a postfix component. | |||
1794 | static bool typeIsPostfix(QualType QT) { | |||
1795 | while (true) { | |||
1796 | const Type* T = QT.getTypePtr(); | |||
1797 | switch (T->getTypeClass()) { | |||
1798 | default: | |||
1799 | return false; | |||
1800 | case Type::Pointer: | |||
1801 | QT = cast<PointerType>(T)->getPointeeType(); | |||
1802 | break; | |||
1803 | case Type::BlockPointer: | |||
1804 | QT = cast<BlockPointerType>(T)->getPointeeType(); | |||
1805 | break; | |||
1806 | case Type::MemberPointer: | |||
1807 | QT = cast<MemberPointerType>(T)->getPointeeType(); | |||
1808 | break; | |||
1809 | case Type::LValueReference: | |||
1810 | case Type::RValueReference: | |||
1811 | QT = cast<ReferenceType>(T)->getPointeeType(); | |||
1812 | break; | |||
1813 | case Type::PackExpansion: | |||
1814 | QT = cast<PackExpansionType>(T)->getPattern(); | |||
1815 | break; | |||
1816 | case Type::Paren: | |||
1817 | case Type::ConstantArray: | |||
1818 | case Type::DependentSizedArray: | |||
1819 | case Type::IncompleteArray: | |||
1820 | case Type::VariableArray: | |||
1821 | case Type::FunctionProto: | |||
1822 | case Type::FunctionNoProto: | |||
1823 | return true; | |||
1824 | } | |||
1825 | } | |||
1826 | } | |||
1827 | ||||
1828 | SourceRange DeclaratorDecl::getSourceRange() const { | |||
1829 | SourceLocation RangeEnd = getLocation(); | |||
1830 | if (TypeSourceInfo *TInfo = getTypeSourceInfo()) { | |||
1831 | // If the declaration has no name or the type extends past the name take the | |||
1832 | // end location of the type. | |||
1833 | if (!getDeclName() || typeIsPostfix(TInfo->getType())) | |||
1834 | RangeEnd = TInfo->getTypeLoc().getSourceRange().getEnd(); | |||
1835 | } | |||
1836 | return SourceRange(getOuterLocStart(), RangeEnd); | |||
1837 | } | |||
1838 | ||||
1839 | void QualifierInfo::setTemplateParameterListsInfo( | |||
1840 | ASTContext &Context, ArrayRef<TemplateParameterList *> TPLists) { | |||
1841 | // Free previous template parameters (if any). | |||
1842 | if (NumTemplParamLists > 0) { | |||
1843 | Context.Deallocate(TemplParamLists); | |||
1844 | TemplParamLists = nullptr; | |||
1845 | NumTemplParamLists = 0; | |||
1846 | } | |||
1847 | // Set info on matched template parameter lists (if any). | |||
1848 | if (!TPLists.empty()) { | |||
1849 | TemplParamLists = new (Context) TemplateParameterList *[TPLists.size()]; | |||
1850 | NumTemplParamLists = TPLists.size(); | |||
1851 | std::copy(TPLists.begin(), TPLists.end(), TemplParamLists); | |||
1852 | } | |||
1853 | } | |||
1854 | ||||
1855 | //===----------------------------------------------------------------------===// | |||
1856 | // VarDecl Implementation | |||
1857 | //===----------------------------------------------------------------------===// | |||
1858 | ||||
1859 | const char *VarDecl::getStorageClassSpecifierString(StorageClass SC) { | |||
1860 | switch (SC) { | |||
1861 | case SC_None: break; | |||
1862 | case SC_Auto: return "auto"; | |||
1863 | case SC_Extern: return "extern"; | |||
1864 | case SC_PrivateExtern: return "__private_extern__"; | |||
1865 | case SC_Register: return "register"; | |||
1866 | case SC_Static: return "static"; | |||
1867 | } | |||
1868 | ||||
1869 | llvm_unreachable("Invalid storage class")::llvm::llvm_unreachable_internal("Invalid storage class", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1869); | |||
1870 | } | |||
1871 | ||||
1872 | VarDecl::VarDecl(Kind DK, ASTContext &C, DeclContext *DC, | |||
1873 | SourceLocation StartLoc, SourceLocation IdLoc, | |||
1874 | IdentifierInfo *Id, QualType T, TypeSourceInfo *TInfo, | |||
1875 | StorageClass SC) | |||
1876 | : DeclaratorDecl(DK, DC, IdLoc, Id, T, TInfo, StartLoc), | |||
1877 | redeclarable_base(C) { | |||
1878 | static_assert(sizeof(VarDeclBitfields) <= sizeof(unsigned), | |||
1879 | "VarDeclBitfields too large!"); | |||
1880 | static_assert(sizeof(ParmVarDeclBitfields) <= sizeof(unsigned), | |||
1881 | "ParmVarDeclBitfields too large!"); | |||
1882 | static_assert(sizeof(NonParmVarDeclBitfields) <= sizeof(unsigned), | |||
1883 | "NonParmVarDeclBitfields too large!"); | |||
1884 | AllBits = 0; | |||
1885 | VarDeclBits.SClass = SC; | |||
1886 | // Everything else is implicitly initialized to false. | |||
1887 | } | |||
1888 | ||||
1889 | VarDecl *VarDecl::Create(ASTContext &C, DeclContext *DC, | |||
1890 | SourceLocation StartL, SourceLocation IdL, | |||
1891 | IdentifierInfo *Id, QualType T, TypeSourceInfo *TInfo, | |||
1892 | StorageClass S) { | |||
1893 | return new (C, DC) VarDecl(Var, C, DC, StartL, IdL, Id, T, TInfo, S); | |||
1894 | } | |||
1895 | ||||
1896 | VarDecl *VarDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
1897 | return new (C, ID) | |||
1898 | VarDecl(Var, C, nullptr, SourceLocation(), SourceLocation(), nullptr, | |||
1899 | QualType(), nullptr, SC_None); | |||
1900 | } | |||
1901 | ||||
1902 | void VarDecl::setStorageClass(StorageClass SC) { | |||
1903 | assert(isLegalForVariable(SC))(static_cast <bool> (isLegalForVariable(SC)) ? void (0) : __assert_fail ("isLegalForVariable(SC)", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1903, __extension__ __PRETTY_FUNCTION__)); | |||
1904 | VarDeclBits.SClass = SC; | |||
1905 | } | |||
1906 | ||||
1907 | VarDecl::TLSKind VarDecl::getTLSKind() const { | |||
1908 | switch (VarDeclBits.TSCSpec) { | |||
1909 | case TSCS_unspecified: | |||
1910 | if (!hasAttr<ThreadAttr>() && | |||
1911 | !(getASTContext().getLangOpts().OpenMPUseTLS && | |||
1912 | getASTContext().getTargetInfo().isTLSSupported() && | |||
1913 | hasAttr<OMPThreadPrivateDeclAttr>())) | |||
1914 | return TLS_None; | |||
1915 | return ((getASTContext().getLangOpts().isCompatibleWithMSVC( | |||
1916 | LangOptions::MSVC2015)) || | |||
1917 | hasAttr<OMPThreadPrivateDeclAttr>()) | |||
1918 | ? TLS_Dynamic | |||
1919 | : TLS_Static; | |||
1920 | case TSCS___thread: // Fall through. | |||
1921 | case TSCS__Thread_local: | |||
1922 | return TLS_Static; | |||
1923 | case TSCS_thread_local: | |||
1924 | return TLS_Dynamic; | |||
1925 | } | |||
1926 | llvm_unreachable("Unknown thread storage class specifier!")::llvm::llvm_unreachable_internal("Unknown thread storage class specifier!" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1926); | |||
1927 | } | |||
1928 | ||||
1929 | SourceRange VarDecl::getSourceRange() const { | |||
1930 | if (const Expr *Init = getInit()) { | |||
1931 | SourceLocation InitEnd = Init->getLocEnd(); | |||
1932 | // If Init is implicit, ignore its source range and fallback on | |||
1933 | // DeclaratorDecl::getSourceRange() to handle postfix elements. | |||
1934 | if (InitEnd.isValid() && InitEnd != getLocation()) | |||
1935 | return SourceRange(getOuterLocStart(), InitEnd); | |||
1936 | } | |||
1937 | return DeclaratorDecl::getSourceRange(); | |||
1938 | } | |||
1939 | ||||
1940 | template<typename T> | |||
1941 | static LanguageLinkage getDeclLanguageLinkage(const T &D) { | |||
1942 | // C++ [dcl.link]p1: All function types, function names with external linkage, | |||
1943 | // and variable names with external linkage have a language linkage. | |||
1944 | if (!D.hasExternalFormalLinkage()) | |||
1945 | return NoLanguageLinkage; | |||
1946 | ||||
1947 | // Language linkage is a C++ concept, but saying that everything else in C has | |||
1948 | // C language linkage fits the implementation nicely. | |||
1949 | ASTContext &Context = D.getASTContext(); | |||
1950 | if (!Context.getLangOpts().CPlusPlus) | |||
1951 | return CLanguageLinkage; | |||
1952 | ||||
1953 | // C++ [dcl.link]p4: A C language linkage is ignored in determining the | |||
1954 | // language linkage of the names of class members and the function type of | |||
1955 | // class member functions. | |||
1956 | const DeclContext *DC = D.getDeclContext(); | |||
1957 | if (DC->isRecord()) | |||
1958 | return CXXLanguageLinkage; | |||
1959 | ||||
1960 | // If the first decl is in an extern "C" context, any other redeclaration | |||
1961 | // will have C language linkage. If the first one is not in an extern "C" | |||
1962 | // context, we would have reported an error for any other decl being in one. | |||
1963 | if (isFirstInExternCContext(&D)) | |||
1964 | return CLanguageLinkage; | |||
1965 | return CXXLanguageLinkage; | |||
1966 | } | |||
1967 | ||||
1968 | template<typename T> | |||
1969 | static bool isDeclExternC(const T &D) { | |||
1970 | // Since the context is ignored for class members, they can only have C++ | |||
1971 | // language linkage or no language linkage. | |||
1972 | const DeclContext *DC = D.getDeclContext(); | |||
1973 | if (DC->isRecord()) { | |||
1974 | assert(D.getASTContext().getLangOpts().CPlusPlus)(static_cast <bool> (D.getASTContext().getLangOpts().CPlusPlus ) ? void (0) : __assert_fail ("D.getASTContext().getLangOpts().CPlusPlus" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 1974, __extension__ __PRETTY_FUNCTION__)); | |||
1975 | return false; | |||
1976 | } | |||
1977 | ||||
1978 | return D.getLanguageLinkage() == CLanguageLinkage; | |||
1979 | } | |||
1980 | ||||
1981 | LanguageLinkage VarDecl::getLanguageLinkage() const { | |||
1982 | return getDeclLanguageLinkage(*this); | |||
1983 | } | |||
1984 | ||||
1985 | bool VarDecl::isExternC() const { | |||
1986 | return isDeclExternC(*this); | |||
1987 | } | |||
1988 | ||||
1989 | bool VarDecl::isInExternCContext() const { | |||
1990 | return getLexicalDeclContext()->isExternCContext(); | |||
1991 | } | |||
1992 | ||||
1993 | bool VarDecl::isInExternCXXContext() const { | |||
1994 | return getLexicalDeclContext()->isExternCXXContext(); | |||
1995 | } | |||
1996 | ||||
1997 | VarDecl *VarDecl::getCanonicalDecl() { return getFirstDecl(); } | |||
1998 | ||||
1999 | VarDecl::DefinitionKind | |||
2000 | VarDecl::isThisDeclarationADefinition(ASTContext &C) const { | |||
2001 | if (isThisDeclarationADemotedDefinition()) | |||
2002 | return DeclarationOnly; | |||
2003 | ||||
2004 | // C++ [basic.def]p2: | |||
2005 | // A declaration is a definition unless [...] it contains the 'extern' | |||
2006 | // specifier or a linkage-specification and neither an initializer [...], | |||
2007 | // it declares a non-inline static data member in a class declaration [...], | |||
2008 | // it declares a static data member outside a class definition and the variable | |||
2009 | // was defined within the class with the constexpr specifier [...], | |||
2010 | // C++1y [temp.expl.spec]p15: | |||
2011 | // An explicit specialization of a static data member or an explicit | |||
2012 | // specialization of a static data member template is a definition if the | |||
2013 | // declaration includes an initializer; otherwise, it is a declaration. | |||
2014 | // | |||
2015 | // FIXME: How do you declare (but not define) a partial specialization of | |||
2016 | // a static data member template outside the containing class? | |||
2017 | if (isStaticDataMember()) { | |||
2018 | if (isOutOfLine() && | |||
2019 | !(getCanonicalDecl()->isInline() && | |||
2020 | getCanonicalDecl()->isConstexpr()) && | |||
2021 | (hasInit() || | |||
2022 | // If the first declaration is out-of-line, this may be an | |||
2023 | // instantiation of an out-of-line partial specialization of a variable | |||
2024 | // template for which we have not yet instantiated the initializer. | |||
2025 | (getFirstDecl()->isOutOfLine() | |||
2026 | ? getTemplateSpecializationKind() == TSK_Undeclared | |||
2027 | : getTemplateSpecializationKind() != | |||
2028 | TSK_ExplicitSpecialization) || | |||
2029 | isa<VarTemplatePartialSpecializationDecl>(this))) | |||
2030 | return Definition; | |||
2031 | else if (!isOutOfLine() && isInline()) | |||
2032 | return Definition; | |||
2033 | else | |||
2034 | return DeclarationOnly; | |||
2035 | } | |||
2036 | // C99 6.7p5: | |||
2037 | // A definition of an identifier is a declaration for that identifier that | |||
2038 | // [...] causes storage to be reserved for that object. | |||
2039 | // Note: that applies for all non-file-scope objects. | |||
2040 | // C99 6.9.2p1: | |||
2041 | // If the declaration of an identifier for an object has file scope and an | |||
2042 | // initializer, the declaration is an external definition for the identifier | |||
2043 | if (hasInit()) | |||
2044 | return Definition; | |||
2045 | ||||
2046 | if (hasDefiningAttr()) | |||
2047 | return Definition; | |||
2048 | ||||
2049 | if (const auto *SAA = getAttr<SelectAnyAttr>()) | |||
2050 | if (!SAA->isInherited()) | |||
2051 | return Definition; | |||
2052 | ||||
2053 | // A variable template specialization (other than a static data member | |||
2054 | // template or an explicit specialization) is a declaration until we | |||
2055 | // instantiate its initializer. | |||
2056 | if (auto *VTSD = dyn_cast<VarTemplateSpecializationDecl>(this)) { | |||
2057 | if (VTSD->getTemplateSpecializationKind() != TSK_ExplicitSpecialization && | |||
2058 | !isa<VarTemplatePartialSpecializationDecl>(VTSD) && | |||
2059 | !VTSD->IsCompleteDefinition) | |||
2060 | return DeclarationOnly; | |||
2061 | } | |||
2062 | ||||
2063 | if (hasExternalStorage()) | |||
2064 | return DeclarationOnly; | |||
2065 | ||||
2066 | // [dcl.link] p7: | |||
2067 | // A declaration directly contained in a linkage-specification is treated | |||
2068 | // as if it contains the extern specifier for the purpose of determining | |||
2069 | // the linkage of the declared name and whether it is a definition. | |||
2070 | if (isSingleLineLanguageLinkage(*this)) | |||
2071 | return DeclarationOnly; | |||
2072 | ||||
2073 | // C99 6.9.2p2: | |||
2074 | // A declaration of an object that has file scope without an initializer, | |||
2075 | // and without a storage class specifier or the scs 'static', constitutes | |||
2076 | // a tentative definition. | |||
2077 | // No such thing in C++. | |||
2078 | if (!C.getLangOpts().CPlusPlus && isFileVarDecl()) | |||
2079 | return TentativeDefinition; | |||
2080 | ||||
2081 | // What's left is (in C, block-scope) declarations without initializers or | |||
2082 | // external storage. These are definitions. | |||
2083 | return Definition; | |||
2084 | } | |||
2085 | ||||
2086 | VarDecl *VarDecl::getActingDefinition() { | |||
2087 | DefinitionKind Kind = isThisDeclarationADefinition(); | |||
2088 | if (Kind != TentativeDefinition) | |||
2089 | return nullptr; | |||
2090 | ||||
2091 | VarDecl *LastTentative = nullptr; | |||
2092 | VarDecl *First = getFirstDecl(); | |||
2093 | for (auto I : First->redecls()) { | |||
2094 | Kind = I->isThisDeclarationADefinition(); | |||
2095 | if (Kind == Definition) | |||
2096 | return nullptr; | |||
2097 | else if (Kind == TentativeDefinition) | |||
2098 | LastTentative = I; | |||
2099 | } | |||
2100 | return LastTentative; | |||
2101 | } | |||
2102 | ||||
2103 | VarDecl *VarDecl::getDefinition(ASTContext &C) { | |||
2104 | VarDecl *First = getFirstDecl(); | |||
2105 | for (auto I : First->redecls()) { | |||
2106 | if (I->isThisDeclarationADefinition(C) == Definition) | |||
2107 | return I; | |||
2108 | } | |||
2109 | return nullptr; | |||
2110 | } | |||
2111 | ||||
2112 | VarDecl::DefinitionKind VarDecl::hasDefinition(ASTContext &C) const { | |||
2113 | DefinitionKind Kind = DeclarationOnly; | |||
2114 | ||||
2115 | const VarDecl *First = getFirstDecl(); | |||
2116 | for (auto I : First->redecls()) { | |||
2117 | Kind = std::max(Kind, I->isThisDeclarationADefinition(C)); | |||
2118 | if (Kind == Definition) | |||
2119 | break; | |||
2120 | } | |||
2121 | ||||
2122 | return Kind; | |||
2123 | } | |||
2124 | ||||
2125 | const Expr *VarDecl::getAnyInitializer(const VarDecl *&D) const { | |||
2126 | for (auto I : redecls()) { | |||
2127 | if (auto Expr = I->getInit()) { | |||
2128 | D = I; | |||
2129 | return Expr; | |||
2130 | } | |||
2131 | } | |||
2132 | return nullptr; | |||
2133 | } | |||
2134 | ||||
2135 | bool VarDecl::hasInit() const { | |||
2136 | if (auto *P = dyn_cast<ParmVarDecl>(this)) | |||
2137 | if (P->hasUnparsedDefaultArg() || P->hasUninstantiatedDefaultArg()) | |||
2138 | return false; | |||
2139 | ||||
2140 | return !Init.isNull(); | |||
2141 | } | |||
2142 | ||||
2143 | Expr *VarDecl::getInit() { | |||
2144 | if (!hasInit()) | |||
2145 | return nullptr; | |||
2146 | ||||
2147 | if (auto *S = Init.dyn_cast<Stmt *>()) | |||
2148 | return cast<Expr>(S); | |||
2149 | ||||
2150 | return cast_or_null<Expr>(Init.get<EvaluatedStmt *>()->Value); | |||
2151 | } | |||
2152 | ||||
2153 | Stmt **VarDecl::getInitAddress() { | |||
2154 | if (auto *ES = Init.dyn_cast<EvaluatedStmt *>()) | |||
2155 | return &ES->Value; | |||
2156 | ||||
2157 | return Init.getAddrOfPtr1(); | |||
2158 | } | |||
2159 | ||||
2160 | bool VarDecl::isOutOfLine() const { | |||
2161 | if (Decl::isOutOfLine()) | |||
2162 | return true; | |||
2163 | ||||
2164 | if (!isStaticDataMember()) | |||
2165 | return false; | |||
2166 | ||||
2167 | // If this static data member was instantiated from a static data member of | |||
2168 | // a class template, check whether that static data member was defined | |||
2169 | // out-of-line. | |||
2170 | if (VarDecl *VD = getInstantiatedFromStaticDataMember()) | |||
2171 | return VD->isOutOfLine(); | |||
2172 | ||||
2173 | return false; | |||
2174 | } | |||
2175 | ||||
2176 | void VarDecl::setInit(Expr *I) { | |||
2177 | if (auto *Eval = Init.dyn_cast<EvaluatedStmt *>()) { | |||
2178 | Eval->~EvaluatedStmt(); | |||
2179 | getASTContext().Deallocate(Eval); | |||
2180 | } | |||
2181 | ||||
2182 | Init = I; | |||
2183 | } | |||
2184 | ||||
2185 | bool VarDecl::isUsableInConstantExpressions(ASTContext &C) const { | |||
2186 | const LangOptions &Lang = C.getLangOpts(); | |||
2187 | ||||
2188 | if (!Lang.CPlusPlus) | |||
2189 | return false; | |||
2190 | ||||
2191 | // In C++11, any variable of reference type can be used in a constant | |||
2192 | // expression if it is initialized by a constant expression. | |||
2193 | if (Lang.CPlusPlus11 && getType()->isReferenceType()) | |||
2194 | return true; | |||
2195 | ||||
2196 | // Only const objects can be used in constant expressions in C++. C++98 does | |||
2197 | // not require the variable to be non-volatile, but we consider this to be a | |||
2198 | // defect. | |||
2199 | if (!getType().isConstQualified() || getType().isVolatileQualified()) | |||
2200 | return false; | |||
2201 | ||||
2202 | // In C++, const, non-volatile variables of integral or enumeration types | |||
2203 | // can be used in constant expressions. | |||
2204 | if (getType()->isIntegralOrEnumerationType()) | |||
2205 | return true; | |||
2206 | ||||
2207 | // Additionally, in C++11, non-volatile constexpr variables can be used in | |||
2208 | // constant expressions. | |||
2209 | return Lang.CPlusPlus11 && isConstexpr(); | |||
2210 | } | |||
2211 | ||||
2212 | /// Convert the initializer for this declaration to the elaborated EvaluatedStmt | |||
2213 | /// form, which contains extra information on the evaluated value of the | |||
2214 | /// initializer. | |||
2215 | EvaluatedStmt *VarDecl::ensureEvaluatedStmt() const { | |||
2216 | auto *Eval = Init.dyn_cast<EvaluatedStmt *>(); | |||
2217 | if (!Eval) { | |||
2218 | // Note: EvaluatedStmt contains an APValue, which usually holds | |||
2219 | // resources not allocated from the ASTContext. We need to do some | |||
2220 | // work to avoid leaking those, but we do so in VarDecl::evaluateValue | |||
2221 | // where we can detect whether there's anything to clean up or not. | |||
2222 | Eval = new (getASTContext()) EvaluatedStmt; | |||
2223 | Eval->Value = Init.get<Stmt *>(); | |||
2224 | Init = Eval; | |||
2225 | } | |||
2226 | return Eval; | |||
2227 | } | |||
2228 | ||||
2229 | APValue *VarDecl::evaluateValue() const { | |||
2230 | SmallVector<PartialDiagnosticAt, 8> Notes; | |||
2231 | return evaluateValue(Notes); | |||
2232 | } | |||
2233 | ||||
2234 | APValue *VarDecl::evaluateValue( | |||
2235 | SmallVectorImpl<PartialDiagnosticAt> &Notes) const { | |||
2236 | EvaluatedStmt *Eval = ensureEvaluatedStmt(); | |||
2237 | ||||
2238 | // We only produce notes indicating why an initializer is non-constant the | |||
2239 | // first time it is evaluated. FIXME: The notes won't always be emitted the | |||
2240 | // first time we try evaluation, so might not be produced at all. | |||
2241 | if (Eval->WasEvaluated) | |||
2242 | return Eval->Evaluated.isUninit() ? nullptr : &Eval->Evaluated; | |||
2243 | ||||
2244 | const auto *Init = cast<Expr>(Eval->Value); | |||
2245 | assert(!Init->isValueDependent())(static_cast <bool> (!Init->isValueDependent()) ? void (0) : __assert_fail ("!Init->isValueDependent()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2245, __extension__ __PRETTY_FUNCTION__)); | |||
2246 | ||||
2247 | if (Eval->IsEvaluating) { | |||
2248 | // FIXME: Produce a diagnostic for self-initialization. | |||
2249 | Eval->CheckedICE = true; | |||
2250 | Eval->IsICE = false; | |||
2251 | return nullptr; | |||
2252 | } | |||
2253 | ||||
2254 | Eval->IsEvaluating = true; | |||
2255 | ||||
2256 | bool Result = Init->EvaluateAsInitializer(Eval->Evaluated, getASTContext(), | |||
2257 | this, Notes); | |||
2258 | ||||
2259 | // Ensure the computed APValue is cleaned up later if evaluation succeeded, | |||
2260 | // or that it's empty (so that there's nothing to clean up) if evaluation | |||
2261 | // failed. | |||
2262 | if (!Result) | |||
2263 | Eval->Evaluated = APValue(); | |||
2264 | else if (Eval->Evaluated.needsCleanup()) | |||
2265 | getASTContext().addDestruction(&Eval->Evaluated); | |||
2266 | ||||
2267 | Eval->IsEvaluating = false; | |||
2268 | Eval->WasEvaluated = true; | |||
2269 | ||||
2270 | // In C++11, we have determined whether the initializer was a constant | |||
2271 | // expression as a side-effect. | |||
2272 | if (getASTContext().getLangOpts().CPlusPlus11 && !Eval->CheckedICE) { | |||
2273 | Eval->CheckedICE = true; | |||
2274 | Eval->IsICE = Result && Notes.empty(); | |||
2275 | } | |||
2276 | ||||
2277 | return Result ? &Eval->Evaluated : nullptr; | |||
2278 | } | |||
2279 | ||||
2280 | APValue *VarDecl::getEvaluatedValue() const { | |||
2281 | if (EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>()) | |||
2282 | if (Eval->WasEvaluated) | |||
2283 | return &Eval->Evaluated; | |||
2284 | ||||
2285 | return nullptr; | |||
2286 | } | |||
2287 | ||||
2288 | bool VarDecl::isInitKnownICE() const { | |||
2289 | if (EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>()) | |||
2290 | return Eval->CheckedICE; | |||
2291 | ||||
2292 | return false; | |||
2293 | } | |||
2294 | ||||
2295 | bool VarDecl::isInitICE() const { | |||
2296 | assert(isInitKnownICE() &&(static_cast <bool> (isInitKnownICE() && "Check whether we already know that the initializer is an ICE" ) ? void (0) : __assert_fail ("isInitKnownICE() && \"Check whether we already know that the initializer is an ICE\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2297, __extension__ __PRETTY_FUNCTION__)) | |||
2297 | "Check whether we already know that the initializer is an ICE")(static_cast <bool> (isInitKnownICE() && "Check whether we already know that the initializer is an ICE" ) ? void (0) : __assert_fail ("isInitKnownICE() && \"Check whether we already know that the initializer is an ICE\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2297, __extension__ __PRETTY_FUNCTION__)); | |||
2298 | return Init.get<EvaluatedStmt *>()->IsICE; | |||
2299 | } | |||
2300 | ||||
2301 | bool VarDecl::checkInitIsICE() const { | |||
2302 | // Initializers of weak variables are never ICEs. | |||
2303 | if (isWeak()) | |||
2304 | return false; | |||
2305 | ||||
2306 | EvaluatedStmt *Eval = ensureEvaluatedStmt(); | |||
2307 | if (Eval->CheckedICE) | |||
2308 | // We have already checked whether this subexpression is an | |||
2309 | // integral constant expression. | |||
2310 | return Eval->IsICE; | |||
2311 | ||||
2312 | const auto *Init = cast<Expr>(Eval->Value); | |||
2313 | assert(!Init->isValueDependent())(static_cast <bool> (!Init->isValueDependent()) ? void (0) : __assert_fail ("!Init->isValueDependent()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2313, __extension__ __PRETTY_FUNCTION__)); | |||
2314 | ||||
2315 | // In C++11, evaluate the initializer to check whether it's a constant | |||
2316 | // expression. | |||
2317 | if (getASTContext().getLangOpts().CPlusPlus11) { | |||
2318 | SmallVector<PartialDiagnosticAt, 8> Notes; | |||
2319 | evaluateValue(Notes); | |||
2320 | return Eval->IsICE; | |||
2321 | } | |||
2322 | ||||
2323 | // It's an ICE whether or not the definition we found is | |||
2324 | // out-of-line. See DR 721 and the discussion in Clang PR | |||
2325 | // 6206 for details. | |||
2326 | ||||
2327 | if (Eval->CheckingICE) | |||
2328 | return false; | |||
2329 | Eval->CheckingICE = true; | |||
2330 | ||||
2331 | Eval->IsICE = Init->isIntegerConstantExpr(getASTContext()); | |||
2332 | Eval->CheckingICE = false; | |||
2333 | Eval->CheckedICE = true; | |||
2334 | return Eval->IsICE; | |||
2335 | } | |||
2336 | ||||
2337 | template<typename DeclT> | |||
2338 | static DeclT *getDefinitionOrSelf(DeclT *D) { | |||
2339 | assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2339, __extension__ __PRETTY_FUNCTION__)); | |||
2340 | if (auto *Def = D->getDefinition()) | |||
2341 | return Def; | |||
2342 | return D; | |||
2343 | } | |||
2344 | ||||
2345 | VarDecl *VarDecl::getTemplateInstantiationPattern() const { | |||
2346 | // If it's a variable template specialization, find the template or partial | |||
2347 | // specialization from which it was instantiated. | |||
2348 | if (auto *VDTemplSpec = dyn_cast<VarTemplateSpecializationDecl>(this)) { | |||
2349 | auto From = VDTemplSpec->getInstantiatedFrom(); | |||
2350 | if (auto *VTD = From.dyn_cast<VarTemplateDecl *>()) { | |||
2351 | while (auto *NewVTD = VTD->getInstantiatedFromMemberTemplate()) { | |||
2352 | if (NewVTD->isMemberSpecialization()) | |||
2353 | break; | |||
2354 | VTD = NewVTD; | |||
2355 | } | |||
2356 | return getDefinitionOrSelf(VTD->getTemplatedDecl()); | |||
2357 | } | |||
2358 | if (auto *VTPSD = | |||
2359 | From.dyn_cast<VarTemplatePartialSpecializationDecl *>()) { | |||
2360 | while (auto *NewVTPSD = VTPSD->getInstantiatedFromMember()) { | |||
2361 | if (NewVTPSD->isMemberSpecialization()) | |||
2362 | break; | |||
2363 | VTPSD = NewVTPSD; | |||
2364 | } | |||
2365 | return getDefinitionOrSelf<VarDecl>(VTPSD); | |||
2366 | } | |||
2367 | } | |||
2368 | ||||
2369 | if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) { | |||
2370 | if (isTemplateInstantiation(MSInfo->getTemplateSpecializationKind())) { | |||
2371 | VarDecl *VD = getInstantiatedFromStaticDataMember(); | |||
2372 | while (auto *NewVD = VD->getInstantiatedFromStaticDataMember()) | |||
2373 | VD = NewVD; | |||
2374 | return getDefinitionOrSelf(VD); | |||
2375 | } | |||
2376 | } | |||
2377 | ||||
2378 | if (VarTemplateDecl *VarTemplate = getDescribedVarTemplate()) { | |||
2379 | while (VarTemplate->getInstantiatedFromMemberTemplate()) { | |||
2380 | if (VarTemplate->isMemberSpecialization()) | |||
2381 | break; | |||
2382 | VarTemplate = VarTemplate->getInstantiatedFromMemberTemplate(); | |||
2383 | } | |||
2384 | ||||
2385 | return getDefinitionOrSelf(VarTemplate->getTemplatedDecl()); | |||
2386 | } | |||
2387 | return nullptr; | |||
2388 | } | |||
2389 | ||||
2390 | VarDecl *VarDecl::getInstantiatedFromStaticDataMember() const { | |||
2391 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) | |||
2392 | return cast<VarDecl>(MSI->getInstantiatedFrom()); | |||
2393 | ||||
2394 | return nullptr; | |||
2395 | } | |||
2396 | ||||
2397 | TemplateSpecializationKind VarDecl::getTemplateSpecializationKind() const { | |||
2398 | if (const auto *Spec = dyn_cast<VarTemplateSpecializationDecl>(this)) | |||
2399 | return Spec->getSpecializationKind(); | |||
2400 | ||||
2401 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) | |||
2402 | return MSI->getTemplateSpecializationKind(); | |||
2403 | ||||
2404 | return TSK_Undeclared; | |||
2405 | } | |||
2406 | ||||
2407 | SourceLocation VarDecl::getPointOfInstantiation() const { | |||
2408 | if (const auto *Spec = dyn_cast<VarTemplateSpecializationDecl>(this)) | |||
2409 | return Spec->getPointOfInstantiation(); | |||
2410 | ||||
2411 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) | |||
2412 | return MSI->getPointOfInstantiation(); | |||
2413 | ||||
2414 | return SourceLocation(); | |||
2415 | } | |||
2416 | ||||
2417 | VarTemplateDecl *VarDecl::getDescribedVarTemplate() const { | |||
2418 | return getASTContext().getTemplateOrSpecializationInfo(this) | |||
2419 | .dyn_cast<VarTemplateDecl *>(); | |||
2420 | } | |||
2421 | ||||
2422 | void VarDecl::setDescribedVarTemplate(VarTemplateDecl *Template) { | |||
2423 | getASTContext().setTemplateOrSpecializationInfo(this, Template); | |||
2424 | } | |||
2425 | ||||
2426 | MemberSpecializationInfo *VarDecl::getMemberSpecializationInfo() const { | |||
2427 | if (isStaticDataMember()) | |||
2428 | // FIXME: Remove ? | |||
2429 | // return getASTContext().getInstantiatedFromStaticDataMember(this); | |||
2430 | return getASTContext().getTemplateOrSpecializationInfo(this) | |||
2431 | .dyn_cast<MemberSpecializationInfo *>(); | |||
2432 | return nullptr; | |||
2433 | } | |||
2434 | ||||
2435 | void VarDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK, | |||
2436 | SourceLocation PointOfInstantiation) { | |||
2437 | assert((isa<VarTemplateSpecializationDecl>(this) ||(static_cast <bool> ((isa<VarTemplateSpecializationDecl >(this) || getMemberSpecializationInfo()) && "not a variable or static data member template specialization" ) ? void (0) : __assert_fail ("(isa<VarTemplateSpecializationDecl>(this) || getMemberSpecializationInfo()) && \"not a variable or static data member template specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2439, __extension__ __PRETTY_FUNCTION__)) | |||
2438 | getMemberSpecializationInfo()) &&(static_cast <bool> ((isa<VarTemplateSpecializationDecl >(this) || getMemberSpecializationInfo()) && "not a variable or static data member template specialization" ) ? void (0) : __assert_fail ("(isa<VarTemplateSpecializationDecl>(this) || getMemberSpecializationInfo()) && \"not a variable or static data member template specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2439, __extension__ __PRETTY_FUNCTION__)) | |||
2439 | "not a variable or static data member template specialization")(static_cast <bool> ((isa<VarTemplateSpecializationDecl >(this) || getMemberSpecializationInfo()) && "not a variable or static data member template specialization" ) ? void (0) : __assert_fail ("(isa<VarTemplateSpecializationDecl>(this) || getMemberSpecializationInfo()) && \"not a variable or static data member template specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2439, __extension__ __PRETTY_FUNCTION__)); | |||
2440 | ||||
2441 | if (VarTemplateSpecializationDecl *Spec = | |||
2442 | dyn_cast<VarTemplateSpecializationDecl>(this)) { | |||
2443 | Spec->setSpecializationKind(TSK); | |||
2444 | if (TSK != TSK_ExplicitSpecialization && PointOfInstantiation.isValid() && | |||
2445 | Spec->getPointOfInstantiation().isInvalid()) { | |||
2446 | Spec->setPointOfInstantiation(PointOfInstantiation); | |||
2447 | if (ASTMutationListener *L = getASTContext().getASTMutationListener()) | |||
2448 | L->InstantiationRequested(this); | |||
2449 | } | |||
2450 | } | |||
2451 | ||||
2452 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) { | |||
2453 | MSI->setTemplateSpecializationKind(TSK); | |||
2454 | if (TSK != TSK_ExplicitSpecialization && PointOfInstantiation.isValid() && | |||
2455 | MSI->getPointOfInstantiation().isInvalid()) { | |||
2456 | MSI->setPointOfInstantiation(PointOfInstantiation); | |||
2457 | if (ASTMutationListener *L = getASTContext().getASTMutationListener()) | |||
2458 | L->InstantiationRequested(this); | |||
2459 | } | |||
2460 | } | |||
2461 | } | |||
2462 | ||||
2463 | void | |||
2464 | VarDecl::setInstantiationOfStaticDataMember(VarDecl *VD, | |||
2465 | TemplateSpecializationKind TSK) { | |||
2466 | assert(getASTContext().getTemplateOrSpecializationInfo(this).isNull() &&(static_cast <bool> (getASTContext().getTemplateOrSpecializationInfo (this).isNull() && "Previous template or instantiation?" ) ? void (0) : __assert_fail ("getASTContext().getTemplateOrSpecializationInfo(this).isNull() && \"Previous template or instantiation?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2467, __extension__ __PRETTY_FUNCTION__)) | |||
2467 | "Previous template or instantiation?")(static_cast <bool> (getASTContext().getTemplateOrSpecializationInfo (this).isNull() && "Previous template or instantiation?" ) ? void (0) : __assert_fail ("getASTContext().getTemplateOrSpecializationInfo(this).isNull() && \"Previous template or instantiation?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2467, __extension__ __PRETTY_FUNCTION__)); | |||
2468 | getASTContext().setInstantiatedFromStaticDataMember(this, VD, TSK); | |||
2469 | } | |||
2470 | ||||
2471 | //===----------------------------------------------------------------------===// | |||
2472 | // ParmVarDecl Implementation | |||
2473 | //===----------------------------------------------------------------------===// | |||
2474 | ||||
2475 | ParmVarDecl *ParmVarDecl::Create(ASTContext &C, DeclContext *DC, | |||
2476 | SourceLocation StartLoc, | |||
2477 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
2478 | QualType T, TypeSourceInfo *TInfo, | |||
2479 | StorageClass S, Expr *DefArg) { | |||
2480 | return new (C, DC) ParmVarDecl(ParmVar, C, DC, StartLoc, IdLoc, Id, T, TInfo, | |||
2481 | S, DefArg); | |||
2482 | } | |||
2483 | ||||
2484 | QualType ParmVarDecl::getOriginalType() const { | |||
2485 | TypeSourceInfo *TSI = getTypeSourceInfo(); | |||
2486 | QualType T = TSI ? TSI->getType() : getType(); | |||
2487 | if (const auto *DT = dyn_cast<DecayedType>(T)) | |||
2488 | return DT->getOriginalType(); | |||
2489 | return T; | |||
2490 | } | |||
2491 | ||||
2492 | ParmVarDecl *ParmVarDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2493 | return new (C, ID) | |||
2494 | ParmVarDecl(ParmVar, C, nullptr, SourceLocation(), SourceLocation(), | |||
2495 | nullptr, QualType(), nullptr, SC_None, nullptr); | |||
2496 | } | |||
2497 | ||||
2498 | SourceRange ParmVarDecl::getSourceRange() const { | |||
2499 | if (!hasInheritedDefaultArg()) { | |||
2500 | SourceRange ArgRange = getDefaultArgRange(); | |||
2501 | if (ArgRange.isValid()) | |||
2502 | return SourceRange(getOuterLocStart(), ArgRange.getEnd()); | |||
2503 | } | |||
2504 | ||||
2505 | // DeclaratorDecl considers the range of postfix types as overlapping with the | |||
2506 | // declaration name, but this is not the case with parameters in ObjC methods. | |||
2507 | if (isa<ObjCMethodDecl>(getDeclContext())) | |||
2508 | return SourceRange(DeclaratorDecl::getLocStart(), getLocation()); | |||
2509 | ||||
2510 | return DeclaratorDecl::getSourceRange(); | |||
2511 | } | |||
2512 | ||||
2513 | Expr *ParmVarDecl::getDefaultArg() { | |||
2514 | assert(!hasUnparsedDefaultArg() && "Default argument is not yet parsed!")(static_cast <bool> (!hasUnparsedDefaultArg() && "Default argument is not yet parsed!") ? void (0) : __assert_fail ("!hasUnparsedDefaultArg() && \"Default argument is not yet parsed!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2514, __extension__ __PRETTY_FUNCTION__)); | |||
2515 | assert(!hasUninstantiatedDefaultArg() &&(static_cast <bool> (!hasUninstantiatedDefaultArg() && "Default argument is not yet instantiated!") ? void (0) : __assert_fail ("!hasUninstantiatedDefaultArg() && \"Default argument is not yet instantiated!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2516, __extension__ __PRETTY_FUNCTION__)) | |||
2516 | "Default argument is not yet instantiated!")(static_cast <bool> (!hasUninstantiatedDefaultArg() && "Default argument is not yet instantiated!") ? void (0) : __assert_fail ("!hasUninstantiatedDefaultArg() && \"Default argument is not yet instantiated!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2516, __extension__ __PRETTY_FUNCTION__)); | |||
2517 | ||||
2518 | Expr *Arg = getInit(); | |||
2519 | if (auto *E = dyn_cast_or_null<ExprWithCleanups>(Arg)) | |||
2520 | return E->getSubExpr(); | |||
2521 | ||||
2522 | return Arg; | |||
2523 | } | |||
2524 | ||||
2525 | void ParmVarDecl::setDefaultArg(Expr *defarg) { | |||
2526 | ParmVarDeclBits.DefaultArgKind = DAK_Normal; | |||
2527 | Init = defarg; | |||
2528 | } | |||
2529 | ||||
2530 | SourceRange ParmVarDecl::getDefaultArgRange() const { | |||
2531 | switch (ParmVarDeclBits.DefaultArgKind) { | |||
2532 | case DAK_None: | |||
2533 | case DAK_Unparsed: | |||
2534 | // Nothing we can do here. | |||
2535 | return SourceRange(); | |||
2536 | ||||
2537 | case DAK_Uninstantiated: | |||
2538 | return getUninstantiatedDefaultArg()->getSourceRange(); | |||
2539 | ||||
2540 | case DAK_Normal: | |||
2541 | if (const Expr *E = getInit()) | |||
2542 | return E->getSourceRange(); | |||
2543 | ||||
2544 | // Missing an actual expression, may be invalid. | |||
2545 | return SourceRange(); | |||
2546 | } | |||
2547 | llvm_unreachable("Invalid default argument kind.")::llvm::llvm_unreachable_internal("Invalid default argument kind." , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2547); | |||
2548 | } | |||
2549 | ||||
2550 | void ParmVarDecl::setUninstantiatedDefaultArg(Expr *arg) { | |||
2551 | ParmVarDeclBits.DefaultArgKind = DAK_Uninstantiated; | |||
2552 | Init = arg; | |||
2553 | } | |||
2554 | ||||
2555 | Expr *ParmVarDecl::getUninstantiatedDefaultArg() { | |||
2556 | assert(hasUninstantiatedDefaultArg() &&(static_cast <bool> (hasUninstantiatedDefaultArg() && "Wrong kind of initialization expression!") ? void (0) : __assert_fail ("hasUninstantiatedDefaultArg() && \"Wrong kind of initialization expression!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2557, __extension__ __PRETTY_FUNCTION__)) | |||
2557 | "Wrong kind of initialization expression!")(static_cast <bool> (hasUninstantiatedDefaultArg() && "Wrong kind of initialization expression!") ? void (0) : __assert_fail ("hasUninstantiatedDefaultArg() && \"Wrong kind of initialization expression!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2557, __extension__ __PRETTY_FUNCTION__)); | |||
2558 | return cast_or_null<Expr>(Init.get<Stmt *>()); | |||
2559 | } | |||
2560 | ||||
2561 | bool ParmVarDecl::hasDefaultArg() const { | |||
2562 | // FIXME: We should just return false for DAK_None here once callers are | |||
2563 | // prepared for the case that we encountered an invalid default argument and | |||
2564 | // were unable to even build an invalid expression. | |||
2565 | return hasUnparsedDefaultArg() || hasUninstantiatedDefaultArg() || | |||
2566 | !Init.isNull(); | |||
2567 | } | |||
2568 | ||||
2569 | bool ParmVarDecl::isParameterPack() const { | |||
2570 | return isa<PackExpansionType>(getType()); | |||
2571 | } | |||
2572 | ||||
2573 | void ParmVarDecl::setParameterIndexLarge(unsigned parameterIndex) { | |||
2574 | getASTContext().setParameterIndex(this, parameterIndex); | |||
2575 | ParmVarDeclBits.ParameterIndex = ParameterIndexSentinel; | |||
2576 | } | |||
2577 | ||||
2578 | unsigned ParmVarDecl::getParameterIndexLarge() const { | |||
2579 | return getASTContext().getParameterIndex(this); | |||
2580 | } | |||
2581 | ||||
2582 | //===----------------------------------------------------------------------===// | |||
2583 | // FunctionDecl Implementation | |||
2584 | //===----------------------------------------------------------------------===// | |||
2585 | ||||
2586 | void FunctionDecl::getNameForDiagnostic( | |||
2587 | raw_ostream &OS, const PrintingPolicy &Policy, bool Qualified) const { | |||
2588 | NamedDecl::getNameForDiagnostic(OS, Policy, Qualified); | |||
2589 | const TemplateArgumentList *TemplateArgs = getTemplateSpecializationArgs(); | |||
2590 | if (TemplateArgs) | |||
2591 | printTemplateArgumentList(OS, TemplateArgs->asArray(), Policy); | |||
2592 | } | |||
2593 | ||||
2594 | bool FunctionDecl::isVariadic() const { | |||
2595 | if (const auto *FT = getType()->getAs<FunctionProtoType>()) | |||
2596 | return FT->isVariadic(); | |||
2597 | return false; | |||
2598 | } | |||
2599 | ||||
2600 | bool FunctionDecl::hasBody(const FunctionDecl *&Definition) const { | |||
2601 | for (auto I : redecls()) { | |||
2602 | if (I->doesThisDeclarationHaveABody()) { | |||
2603 | Definition = I; | |||
2604 | return true; | |||
2605 | } | |||
2606 | } | |||
2607 | ||||
2608 | return false; | |||
2609 | } | |||
2610 | ||||
2611 | bool FunctionDecl::hasTrivialBody() const | |||
2612 | { | |||
2613 | Stmt *S = getBody(); | |||
2614 | if (!S) { | |||
2615 | // Since we don't have a body for this function, we don't know if it's | |||
2616 | // trivial or not. | |||
2617 | return false; | |||
2618 | } | |||
2619 | ||||
2620 | if (isa<CompoundStmt>(S) && cast<CompoundStmt>(S)->body_empty()) | |||
2621 | return true; | |||
2622 | return false; | |||
2623 | } | |||
2624 | ||||
2625 | bool FunctionDecl::isDefined(const FunctionDecl *&Definition) const { | |||
2626 | for (auto I : redecls()) { | |||
2627 | if (I->isThisDeclarationADefinition()) { | |||
2628 | Definition = I; | |||
2629 | return true; | |||
2630 | } | |||
2631 | } | |||
2632 | ||||
2633 | return false; | |||
2634 | } | |||
2635 | ||||
2636 | Stmt *FunctionDecl::getBody(const FunctionDecl *&Definition) const { | |||
2637 | if (!hasBody(Definition)) | |||
2638 | return nullptr; | |||
2639 | ||||
2640 | if (Definition->Body) | |||
2641 | return Definition->Body.get(getASTContext().getExternalSource()); | |||
2642 | ||||
2643 | return nullptr; | |||
2644 | } | |||
2645 | ||||
2646 | void FunctionDecl::setBody(Stmt *B) { | |||
2647 | Body = B; | |||
2648 | if (B) | |||
2649 | EndRangeLoc = B->getLocEnd(); | |||
2650 | } | |||
2651 | ||||
2652 | void FunctionDecl::setPure(bool P) { | |||
2653 | IsPure = P; | |||
2654 | if (P) | |||
2655 | if (auto *Parent = dyn_cast<CXXRecordDecl>(getDeclContext())) | |||
2656 | Parent->markedVirtualFunctionPure(); | |||
2657 | } | |||
2658 | ||||
2659 | template<std::size_t Len> | |||
2660 | static bool isNamed(const NamedDecl *ND, const char (&Str)[Len]) { | |||
2661 | IdentifierInfo *II = ND->getIdentifier(); | |||
2662 | return II && II->isStr(Str); | |||
2663 | } | |||
2664 | ||||
2665 | bool FunctionDecl::isMain() const { | |||
2666 | const TranslationUnitDecl *tunit = | |||
2667 | dyn_cast<TranslationUnitDecl>(getDeclContext()->getRedeclContext()); | |||
2668 | return tunit && | |||
2669 | !tunit->getASTContext().getLangOpts().Freestanding && | |||
2670 | isNamed(this, "main"); | |||
2671 | } | |||
2672 | ||||
2673 | bool FunctionDecl::isMSVCRTEntryPoint() const { | |||
2674 | const TranslationUnitDecl *TUnit = | |||
2675 | dyn_cast<TranslationUnitDecl>(getDeclContext()->getRedeclContext()); | |||
2676 | if (!TUnit) | |||
2677 | return false; | |||
2678 | ||||
2679 | // Even though we aren't really targeting MSVCRT if we are freestanding, | |||
2680 | // semantic analysis for these functions remains the same. | |||
2681 | ||||
2682 | // MSVCRT entry points only exist on MSVCRT targets. | |||
2683 | if (!TUnit->getASTContext().getTargetInfo().getTriple().isOSMSVCRT()) | |||
2684 | return false; | |||
2685 | ||||
2686 | // Nameless functions like constructors cannot be entry points. | |||
2687 | if (!getIdentifier()) | |||
2688 | return false; | |||
2689 | ||||
2690 | return llvm::StringSwitch<bool>(getName()) | |||
2691 | .Cases("main", // an ANSI console app | |||
2692 | "wmain", // a Unicode console App | |||
2693 | "WinMain", // an ANSI GUI app | |||
2694 | "wWinMain", // a Unicode GUI app | |||
2695 | "DllMain", // a DLL | |||
2696 | true) | |||
2697 | .Default(false); | |||
2698 | } | |||
2699 | ||||
2700 | bool FunctionDecl::isReservedGlobalPlacementOperator() const { | |||
2701 | assert(getDeclName().getNameKind() == DeclarationName::CXXOperatorName)(static_cast <bool> (getDeclName().getNameKind() == DeclarationName ::CXXOperatorName) ? void (0) : __assert_fail ("getDeclName().getNameKind() == DeclarationName::CXXOperatorName" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2701, __extension__ __PRETTY_FUNCTION__)); | |||
2702 | assert(getDeclName().getCXXOverloadedOperator() == OO_New ||(static_cast <bool> (getDeclName().getCXXOverloadedOperator () == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete) ? void (0) : __assert_fail ("getDeclName().getCXXOverloadedOperator() == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2705, __extension__ __PRETTY_FUNCTION__)) | |||
2703 | getDeclName().getCXXOverloadedOperator() == OO_Delete ||(static_cast <bool> (getDeclName().getCXXOverloadedOperator () == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete) ? void (0) : __assert_fail ("getDeclName().getCXXOverloadedOperator() == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2705, __extension__ __PRETTY_FUNCTION__)) | |||
2704 | getDeclName().getCXXOverloadedOperator() == OO_Array_New ||(static_cast <bool> (getDeclName().getCXXOverloadedOperator () == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete) ? void (0) : __assert_fail ("getDeclName().getCXXOverloadedOperator() == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2705, __extension__ __PRETTY_FUNCTION__)) | |||
2705 | getDeclName().getCXXOverloadedOperator() == OO_Array_Delete)(static_cast <bool> (getDeclName().getCXXOverloadedOperator () == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete) ? void (0) : __assert_fail ("getDeclName().getCXXOverloadedOperator() == OO_New || getDeclName().getCXXOverloadedOperator() == OO_Delete || getDeclName().getCXXOverloadedOperator() == OO_Array_New || getDeclName().getCXXOverloadedOperator() == OO_Array_Delete" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2705, __extension__ __PRETTY_FUNCTION__)); | |||
2706 | ||||
2707 | if (!getDeclContext()->getRedeclContext()->isTranslationUnit()) | |||
2708 | return false; | |||
2709 | ||||
2710 | const auto *proto = getType()->castAs<FunctionProtoType>(); | |||
2711 | if (proto->getNumParams() != 2 || proto->isVariadic()) | |||
2712 | return false; | |||
2713 | ||||
2714 | ASTContext &Context = | |||
2715 | cast<TranslationUnitDecl>(getDeclContext()->getRedeclContext()) | |||
2716 | ->getASTContext(); | |||
2717 | ||||
2718 | // The result type and first argument type are constant across all | |||
2719 | // these operators. The second argument must be exactly void*. | |||
2720 | return (proto->getParamType(1).getCanonicalType() == Context.VoidPtrTy); | |||
2721 | } | |||
2722 | ||||
2723 | bool FunctionDecl::isReplaceableGlobalAllocationFunction(bool *IsAligned) const { | |||
2724 | if (getDeclName().getNameKind() != DeclarationName::CXXOperatorName) | |||
2725 | return false; | |||
2726 | if (getDeclName().getCXXOverloadedOperator() != OO_New && | |||
2727 | getDeclName().getCXXOverloadedOperator() != OO_Delete && | |||
2728 | getDeclName().getCXXOverloadedOperator() != OO_Array_New && | |||
2729 | getDeclName().getCXXOverloadedOperator() != OO_Array_Delete) | |||
2730 | return false; | |||
2731 | ||||
2732 | if (isa<CXXRecordDecl>(getDeclContext())) | |||
2733 | return false; | |||
2734 | ||||
2735 | // This can only fail for an invalid 'operator new' declaration. | |||
2736 | if (!getDeclContext()->getRedeclContext()->isTranslationUnit()) | |||
2737 | return false; | |||
2738 | ||||
2739 | const auto *FPT = getType()->castAs<FunctionProtoType>(); | |||
2740 | if (FPT->getNumParams() == 0 || FPT->getNumParams() > 3 || FPT->isVariadic()) | |||
2741 | return false; | |||
2742 | ||||
2743 | // If this is a single-parameter function, it must be a replaceable global | |||
2744 | // allocation or deallocation function. | |||
2745 | if (FPT->getNumParams() == 1) | |||
2746 | return true; | |||
2747 | ||||
2748 | unsigned Params = 1; | |||
2749 | QualType Ty = FPT->getParamType(Params); | |||
2750 | ASTContext &Ctx = getASTContext(); | |||
2751 | ||||
2752 | auto Consume = [&] { | |||
2753 | ++Params; | |||
2754 | Ty = Params < FPT->getNumParams() ? FPT->getParamType(Params) : QualType(); | |||
2755 | }; | |||
2756 | ||||
2757 | // In C++14, the next parameter can be a 'std::size_t' for sized delete. | |||
2758 | bool IsSizedDelete = false; | |||
2759 | if (Ctx.getLangOpts().SizedDeallocation && | |||
2760 | (getDeclName().getCXXOverloadedOperator() == OO_Delete || | |||
2761 | getDeclName().getCXXOverloadedOperator() == OO_Array_Delete) && | |||
2762 | Ctx.hasSameType(Ty, Ctx.getSizeType())) { | |||
2763 | IsSizedDelete = true; | |||
2764 | Consume(); | |||
2765 | } | |||
2766 | ||||
2767 | // In C++17, the next parameter can be a 'std::align_val_t' for aligned | |||
2768 | // new/delete. | |||
2769 | if (Ctx.getLangOpts().AlignedAllocation && !Ty.isNull() && Ty->isAlignValT()) { | |||
2770 | if (IsAligned) | |||
2771 | *IsAligned = true; | |||
2772 | Consume(); | |||
2773 | } | |||
2774 | ||||
2775 | // Finally, if this is not a sized delete, the final parameter can | |||
2776 | // be a 'const std::nothrow_t&'. | |||
2777 | if (!IsSizedDelete && !Ty.isNull() && Ty->isReferenceType()) { | |||
2778 | Ty = Ty->getPointeeType(); | |||
2779 | if (Ty.getCVRQualifiers() != Qualifiers::Const) | |||
2780 | return false; | |||
2781 | const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl(); | |||
2782 | if (RD && isNamed(RD, "nothrow_t") && RD->isInStdNamespace()) | |||
2783 | Consume(); | |||
2784 | } | |||
2785 | ||||
2786 | return Params == FPT->getNumParams(); | |||
2787 | } | |||
2788 | ||||
2789 | bool FunctionDecl::isDestroyingOperatorDelete() const { | |||
2790 | // C++ P0722: | |||
2791 | // Within a class C, a single object deallocation function with signature | |||
2792 | // (T, std::destroying_delete_t, <more params>) | |||
2793 | // is a destroying operator delete. | |||
2794 | if (!isa<CXXMethodDecl>(this) || getOverloadedOperator() != OO_Delete || | |||
2795 | getNumParams() < 2) | |||
2796 | return false; | |||
2797 | ||||
2798 | auto *RD = getParamDecl(1)->getType()->getAsCXXRecordDecl(); | |||
2799 | return RD && RD->isInStdNamespace() && RD->getIdentifier() && | |||
2800 | RD->getIdentifier()->isStr("destroying_delete_t"); | |||
2801 | } | |||
2802 | ||||
2803 | LanguageLinkage FunctionDecl::getLanguageLinkage() const { | |||
2804 | return getDeclLanguageLinkage(*this); | |||
2805 | } | |||
2806 | ||||
2807 | bool FunctionDecl::isExternC() const { | |||
2808 | return isDeclExternC(*this); | |||
2809 | } | |||
2810 | ||||
2811 | bool FunctionDecl::isInExternCContext() const { | |||
2812 | return getLexicalDeclContext()->isExternCContext(); | |||
2813 | } | |||
2814 | ||||
2815 | bool FunctionDecl::isInExternCXXContext() const { | |||
2816 | return getLexicalDeclContext()->isExternCXXContext(); | |||
2817 | } | |||
2818 | ||||
2819 | bool FunctionDecl::isGlobal() const { | |||
2820 | if (const auto *Method = dyn_cast<CXXMethodDecl>(this)) | |||
2821 | return Method->isStatic(); | |||
2822 | ||||
2823 | if (getCanonicalDecl()->getStorageClass() == SC_Static) | |||
2824 | return false; | |||
2825 | ||||
2826 | for (const DeclContext *DC = getDeclContext(); | |||
2827 | DC->isNamespace(); | |||
2828 | DC = DC->getParent()) { | |||
2829 | if (const auto *Namespace = cast<NamespaceDecl>(DC)) { | |||
2830 | if (!Namespace->getDeclName()) | |||
2831 | return false; | |||
2832 | break; | |||
2833 | } | |||
2834 | } | |||
2835 | ||||
2836 | return true; | |||
2837 | } | |||
2838 | ||||
2839 | bool FunctionDecl::isNoReturn() const { | |||
2840 | if (hasAttr<NoReturnAttr>() || hasAttr<CXX11NoReturnAttr>() || | |||
2841 | hasAttr<C11NoReturnAttr>()) | |||
2842 | return true; | |||
2843 | ||||
2844 | if (auto *FnTy = getType()->getAs<FunctionType>()) | |||
2845 | return FnTy->getNoReturnAttr(); | |||
2846 | ||||
2847 | return false; | |||
2848 | } | |||
2849 | ||||
2850 | void | |||
2851 | FunctionDecl::setPreviousDeclaration(FunctionDecl *PrevDecl) { | |||
2852 | redeclarable_base::setPreviousDecl(PrevDecl); | |||
2853 | ||||
2854 | if (FunctionTemplateDecl *FunTmpl = getDescribedFunctionTemplate()) { | |||
2855 | FunctionTemplateDecl *PrevFunTmpl | |||
2856 | = PrevDecl? PrevDecl->getDescribedFunctionTemplate() : nullptr; | |||
2857 | assert((!PrevDecl || PrevFunTmpl) && "Function/function template mismatch")(static_cast <bool> ((!PrevDecl || PrevFunTmpl) && "Function/function template mismatch") ? void (0) : __assert_fail ("(!PrevDecl || PrevFunTmpl) && \"Function/function template mismatch\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2857, __extension__ __PRETTY_FUNCTION__)); | |||
2858 | FunTmpl->setPreviousDecl(PrevFunTmpl); | |||
2859 | } | |||
2860 | ||||
2861 | if (PrevDecl && PrevDecl->IsInline) | |||
2862 | IsInline = true; | |||
2863 | } | |||
2864 | ||||
2865 | FunctionDecl *FunctionDecl::getCanonicalDecl() { return getFirstDecl(); } | |||
2866 | ||||
2867 | /// \brief Returns a value indicating whether this function | |||
2868 | /// corresponds to a builtin function. | |||
2869 | /// | |||
2870 | /// The function corresponds to a built-in function if it is | |||
2871 | /// declared at translation scope or within an extern "C" block and | |||
2872 | /// its name matches with the name of a builtin. The returned value | |||
2873 | /// will be 0 for functions that do not correspond to a builtin, a | |||
2874 | /// value of type \c Builtin::ID if in the target-independent range | |||
2875 | /// \c [1,Builtin::First), or a target-specific builtin value. | |||
2876 | unsigned FunctionDecl::getBuiltinID() const { | |||
2877 | if (!getIdentifier()) | |||
2878 | return 0; | |||
2879 | ||||
2880 | unsigned BuiltinID = getIdentifier()->getBuiltinID(); | |||
2881 | if (!BuiltinID) | |||
2882 | return 0; | |||
2883 | ||||
2884 | ASTContext &Context = getASTContext(); | |||
2885 | if (Context.getLangOpts().CPlusPlus) { | |||
2886 | const auto *LinkageDecl = | |||
2887 | dyn_cast<LinkageSpecDecl>(getFirstDecl()->getDeclContext()); | |||
2888 | // In C++, the first declaration of a builtin is always inside an implicit | |||
2889 | // extern "C". | |||
2890 | // FIXME: A recognised library function may not be directly in an extern "C" | |||
2891 | // declaration, for instance "extern "C" { namespace std { decl } }". | |||
2892 | if (!LinkageDecl) { | |||
2893 | if (BuiltinID == Builtin::BI__GetExceptionInfo && | |||
2894 | Context.getTargetInfo().getCXXABI().isMicrosoft()) | |||
2895 | return Builtin::BI__GetExceptionInfo; | |||
2896 | return 0; | |||
2897 | } | |||
2898 | if (LinkageDecl->getLanguage() != LinkageSpecDecl::lang_c) | |||
2899 | return 0; | |||
2900 | } | |||
2901 | ||||
2902 | // If the function is marked "overloadable", it has a different mangled name | |||
2903 | // and is not the C library function. | |||
2904 | if (hasAttr<OverloadableAttr>()) | |||
2905 | return 0; | |||
2906 | ||||
2907 | if (!Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) | |||
2908 | return BuiltinID; | |||
2909 | ||||
2910 | // This function has the name of a known C library | |||
2911 | // function. Determine whether it actually refers to the C library | |||
2912 | // function or whether it just has the same name. | |||
2913 | ||||
2914 | // If this is a static function, it's not a builtin. | |||
2915 | if (getStorageClass() == SC_Static) | |||
2916 | return 0; | |||
2917 | ||||
2918 | // OpenCL v1.2 s6.9.f - The library functions defined in | |||
2919 | // the C99 standard headers are not available. | |||
2920 | if (Context.getLangOpts().OpenCL && | |||
2921 | Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) | |||
2922 | return 0; | |||
2923 | ||||
2924 | // CUDA does not have device-side standard library. printf and malloc are the | |||
2925 | // only special cases that are supported by device-side runtime. | |||
2926 | if (Context.getLangOpts().CUDA && hasAttr<CUDADeviceAttr>() && | |||
2927 | !hasAttr<CUDAHostAttr>() && | |||
2928 | !(BuiltinID == Builtin::BIprintf || BuiltinID == Builtin::BImalloc)) | |||
2929 | return 0; | |||
2930 | ||||
2931 | return BuiltinID; | |||
2932 | } | |||
2933 | ||||
2934 | /// getNumParams - Return the number of parameters this function must have | |||
2935 | /// based on its FunctionType. This is the length of the ParamInfo array | |||
2936 | /// after it has been created. | |||
2937 | unsigned FunctionDecl::getNumParams() const { | |||
2938 | const auto *FPT = getType()->getAs<FunctionProtoType>(); | |||
2939 | return FPT ? FPT->getNumParams() : 0; | |||
2940 | } | |||
2941 | ||||
2942 | void FunctionDecl::setParams(ASTContext &C, | |||
2943 | ArrayRef<ParmVarDecl *> NewParamInfo) { | |||
2944 | assert(!ParamInfo && "Already has param info!")(static_cast <bool> (!ParamInfo && "Already has param info!" ) ? void (0) : __assert_fail ("!ParamInfo && \"Already has param info!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2944, __extension__ __PRETTY_FUNCTION__)); | |||
2945 | assert(NewParamInfo.size() == getNumParams() && "Parameter count mismatch!")(static_cast <bool> (NewParamInfo.size() == getNumParams () && "Parameter count mismatch!") ? void (0) : __assert_fail ("NewParamInfo.size() == getNumParams() && \"Parameter count mismatch!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2945, __extension__ __PRETTY_FUNCTION__)); | |||
2946 | ||||
2947 | // Zero params -> null pointer. | |||
2948 | if (!NewParamInfo.empty()) { | |||
2949 | ParamInfo = new (C) ParmVarDecl*[NewParamInfo.size()]; | |||
2950 | std::copy(NewParamInfo.begin(), NewParamInfo.end(), ParamInfo); | |||
2951 | } | |||
2952 | } | |||
2953 | ||||
2954 | /// getMinRequiredArguments - Returns the minimum number of arguments | |||
2955 | /// needed to call this function. This may be fewer than the number of | |||
2956 | /// function parameters, if some of the parameters have default | |||
2957 | /// arguments (in C++) or are parameter packs (C++11). | |||
2958 | unsigned FunctionDecl::getMinRequiredArguments() const { | |||
2959 | if (!getASTContext().getLangOpts().CPlusPlus) | |||
2960 | return getNumParams(); | |||
2961 | ||||
2962 | unsigned NumRequiredArgs = 0; | |||
2963 | for (auto *Param : parameters()) | |||
2964 | if (!Param->isParameterPack() && !Param->hasDefaultArg()) | |||
2965 | ++NumRequiredArgs; | |||
2966 | return NumRequiredArgs; | |||
2967 | } | |||
2968 | ||||
2969 | /// \brief The combination of the extern and inline keywords under MSVC forces | |||
2970 | /// the function to be required. | |||
2971 | /// | |||
2972 | /// Note: This function assumes that we will only get called when isInlined() | |||
2973 | /// would return true for this FunctionDecl. | |||
2974 | bool FunctionDecl::isMSExternInline() const { | |||
2975 | assert(isInlined() && "expected to get called on an inlined function!")(static_cast <bool> (isInlined() && "expected to get called on an inlined function!" ) ? void (0) : __assert_fail ("isInlined() && \"expected to get called on an inlined function!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 2975, __extension__ __PRETTY_FUNCTION__)); | |||
2976 | ||||
2977 | const ASTContext &Context = getASTContext(); | |||
2978 | if (!Context.getTargetInfo().getCXXABI().isMicrosoft() && | |||
2979 | !hasAttr<DLLExportAttr>()) | |||
2980 | return false; | |||
2981 | ||||
2982 | for (const FunctionDecl *FD = getMostRecentDecl(); FD; | |||
2983 | FD = FD->getPreviousDecl()) | |||
2984 | if (!FD->isImplicit() && FD->getStorageClass() == SC_Extern) | |||
2985 | return true; | |||
2986 | ||||
2987 | return false; | |||
2988 | } | |||
2989 | ||||
2990 | static bool redeclForcesDefMSVC(const FunctionDecl *Redecl) { | |||
2991 | if (Redecl->getStorageClass() != SC_Extern) | |||
2992 | return false; | |||
2993 | ||||
2994 | for (const FunctionDecl *FD = Redecl->getPreviousDecl(); FD; | |||
2995 | FD = FD->getPreviousDecl()) | |||
2996 | if (!FD->isImplicit() && FD->getStorageClass() == SC_Extern) | |||
2997 | return false; | |||
2998 | ||||
2999 | return true; | |||
3000 | } | |||
3001 | ||||
3002 | static bool RedeclForcesDefC99(const FunctionDecl *Redecl) { | |||
3003 | // Only consider file-scope declarations in this test. | |||
3004 | if (!Redecl->getLexicalDeclContext()->isTranslationUnit()) | |||
3005 | return false; | |||
3006 | ||||
3007 | // Only consider explicit declarations; the presence of a builtin for a | |||
3008 | // libcall shouldn't affect whether a definition is externally visible. | |||
3009 | if (Redecl->isImplicit()) | |||
3010 | return false; | |||
3011 | ||||
3012 | if (!Redecl->isInlineSpecified() || Redecl->getStorageClass() == SC_Extern) | |||
3013 | return true; // Not an inline definition | |||
3014 | ||||
3015 | return false; | |||
3016 | } | |||
3017 | ||||
3018 | /// \brief For a function declaration in C or C++, determine whether this | |||
3019 | /// declaration causes the definition to be externally visible. | |||
3020 | /// | |||
3021 | /// For instance, this determines if adding the current declaration to the set | |||
3022 | /// of redeclarations of the given functions causes | |||
3023 | /// isInlineDefinitionExternallyVisible to change from false to true. | |||
3024 | bool FunctionDecl::doesDeclarationForceExternallyVisibleDefinition() const { | |||
3025 | assert(!doesThisDeclarationHaveABody() &&(static_cast <bool> (!doesThisDeclarationHaveABody() && "Must have a declaration without a body.") ? void (0) : __assert_fail ("!doesThisDeclarationHaveABody() && \"Must have a declaration without a body.\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3026, __extension__ __PRETTY_FUNCTION__)) | |||
3026 | "Must have a declaration without a body.")(static_cast <bool> (!doesThisDeclarationHaveABody() && "Must have a declaration without a body.") ? void (0) : __assert_fail ("!doesThisDeclarationHaveABody() && \"Must have a declaration without a body.\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3026, __extension__ __PRETTY_FUNCTION__)); | |||
3027 | ||||
3028 | ASTContext &Context = getASTContext(); | |||
3029 | ||||
3030 | if (Context.getLangOpts().MSVCCompat) { | |||
3031 | const FunctionDecl *Definition; | |||
3032 | if (hasBody(Definition) && Definition->isInlined() && | |||
3033 | redeclForcesDefMSVC(this)) | |||
3034 | return true; | |||
3035 | } | |||
3036 | ||||
3037 | if (Context.getLangOpts().GNUInline || hasAttr<GNUInlineAttr>()) { | |||
3038 | // With GNU inlining, a declaration with 'inline' but not 'extern', forces | |||
3039 | // an externally visible definition. | |||
3040 | // | |||
3041 | // FIXME: What happens if gnu_inline gets added on after the first | |||
3042 | // declaration? | |||
3043 | if (!isInlineSpecified() || getStorageClass() == SC_Extern) | |||
3044 | return false; | |||
3045 | ||||
3046 | const FunctionDecl *Prev = this; | |||
3047 | bool FoundBody = false; | |||
3048 | while ((Prev = Prev->getPreviousDecl())) { | |||
3049 | FoundBody |= Prev->Body.isValid(); | |||
3050 | ||||
3051 | if (Prev->Body) { | |||
3052 | // If it's not the case that both 'inline' and 'extern' are | |||
3053 | // specified on the definition, then it is always externally visible. | |||
3054 | if (!Prev->isInlineSpecified() || | |||
3055 | Prev->getStorageClass() != SC_Extern) | |||
3056 | return false; | |||
3057 | } else if (Prev->isInlineSpecified() && | |||
3058 | Prev->getStorageClass() != SC_Extern) { | |||
3059 | return false; | |||
3060 | } | |||
3061 | } | |||
3062 | return FoundBody; | |||
3063 | } | |||
3064 | ||||
3065 | if (Context.getLangOpts().CPlusPlus) | |||
3066 | return false; | |||
3067 | ||||
3068 | // C99 6.7.4p6: | |||
3069 | // [...] If all of the file scope declarations for a function in a | |||
3070 | // translation unit include the inline function specifier without extern, | |||
3071 | // then the definition in that translation unit is an inline definition. | |||
3072 | if (isInlineSpecified() && getStorageClass() != SC_Extern) | |||
3073 | return false; | |||
3074 | const FunctionDecl *Prev = this; | |||
3075 | bool FoundBody = false; | |||
3076 | while ((Prev = Prev->getPreviousDecl())) { | |||
3077 | FoundBody |= Prev->Body.isValid(); | |||
3078 | if (RedeclForcesDefC99(Prev)) | |||
3079 | return false; | |||
3080 | } | |||
3081 | return FoundBody; | |||
3082 | } | |||
3083 | ||||
3084 | SourceRange FunctionDecl::getReturnTypeSourceRange() const { | |||
3085 | const TypeSourceInfo *TSI = getTypeSourceInfo(); | |||
3086 | if (!TSI) | |||
3087 | return SourceRange(); | |||
3088 | FunctionTypeLoc FTL = | |||
3089 | TSI->getTypeLoc().IgnoreParens().getAs<FunctionTypeLoc>(); | |||
3090 | if (!FTL) | |||
3091 | return SourceRange(); | |||
3092 | ||||
3093 | // Skip self-referential return types. | |||
3094 | const SourceManager &SM = getASTContext().getSourceManager(); | |||
3095 | SourceRange RTRange = FTL.getReturnLoc().getSourceRange(); | |||
3096 | SourceLocation Boundary = getNameInfo().getLocStart(); | |||
3097 | if (RTRange.isInvalid() || Boundary.isInvalid() || | |||
3098 | !SM.isBeforeInTranslationUnit(RTRange.getEnd(), Boundary)) | |||
3099 | return SourceRange(); | |||
3100 | ||||
3101 | return RTRange; | |||
3102 | } | |||
3103 | ||||
3104 | SourceRange FunctionDecl::getExceptionSpecSourceRange() const { | |||
3105 | const TypeSourceInfo *TSI = getTypeSourceInfo(); | |||
3106 | if (!TSI) | |||
3107 | return SourceRange(); | |||
3108 | FunctionTypeLoc FTL = | |||
3109 | TSI->getTypeLoc().IgnoreParens().getAs<FunctionTypeLoc>(); | |||
3110 | if (!FTL) | |||
3111 | return SourceRange(); | |||
3112 | ||||
3113 | return FTL.getExceptionSpecRange(); | |||
3114 | } | |||
3115 | ||||
3116 | const Attr *FunctionDecl::getUnusedResultAttr() const { | |||
3117 | QualType RetType = getReturnType(); | |||
3118 | if (RetType->isRecordType()) { | |||
3119 | if (const auto *Ret = | |||
3120 | dyn_cast_or_null<RecordDecl>(RetType->getAsTagDecl())) { | |||
3121 | if (const auto *R = Ret->getAttr<WarnUnusedResultAttr>()) | |||
3122 | return R; | |||
3123 | } | |||
3124 | } else if (const auto *ET = RetType->getAs<EnumType>()) { | |||
3125 | if (const EnumDecl *ED = ET->getDecl()) { | |||
3126 | if (const auto *R = ED->getAttr<WarnUnusedResultAttr>()) | |||
3127 | return R; | |||
3128 | } | |||
3129 | } | |||
3130 | return getAttr<WarnUnusedResultAttr>(); | |||
3131 | } | |||
3132 | ||||
3133 | /// \brief For an inline function definition in C, or for a gnu_inline function | |||
3134 | /// in C++, determine whether the definition will be externally visible. | |||
3135 | /// | |||
3136 | /// Inline function definitions are always available for inlining optimizations. | |||
3137 | /// However, depending on the language dialect, declaration specifiers, and | |||
3138 | /// attributes, the definition of an inline function may or may not be | |||
3139 | /// "externally" visible to other translation units in the program. | |||
3140 | /// | |||
3141 | /// In C99, inline definitions are not externally visible by default. However, | |||
3142 | /// if even one of the global-scope declarations is marked "extern inline", the | |||
3143 | /// inline definition becomes externally visible (C99 6.7.4p6). | |||
3144 | /// | |||
3145 | /// In GNU89 mode, or if the gnu_inline attribute is attached to the function | |||
3146 | /// definition, we use the GNU semantics for inline, which are nearly the | |||
3147 | /// opposite of C99 semantics. In particular, "inline" by itself will create | |||
3148 | /// an externally visible symbol, but "extern inline" will not create an | |||
3149 | /// externally visible symbol. | |||
3150 | bool FunctionDecl::isInlineDefinitionExternallyVisible() const { | |||
3151 | assert((doesThisDeclarationHaveABody() || willHaveBody()) &&(static_cast <bool> ((doesThisDeclarationHaveABody() || willHaveBody()) && "Must be a function definition") ? void (0) : __assert_fail ("(doesThisDeclarationHaveABody() || willHaveBody()) && \"Must be a function definition\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3152, __extension__ __PRETTY_FUNCTION__)) | |||
3152 | "Must be a function definition")(static_cast <bool> ((doesThisDeclarationHaveABody() || willHaveBody()) && "Must be a function definition") ? void (0) : __assert_fail ("(doesThisDeclarationHaveABody() || willHaveBody()) && \"Must be a function definition\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3152, __extension__ __PRETTY_FUNCTION__)); | |||
3153 | assert(isInlined() && "Function must be inline")(static_cast <bool> (isInlined() && "Function must be inline" ) ? void (0) : __assert_fail ("isInlined() && \"Function must be inline\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3153, __extension__ __PRETTY_FUNCTION__)); | |||
3154 | ASTContext &Context = getASTContext(); | |||
3155 | ||||
3156 | if (Context.getLangOpts().GNUInline || hasAttr<GNUInlineAttr>()) { | |||
3157 | // Note: If you change the logic here, please change | |||
3158 | // doesDeclarationForceExternallyVisibleDefinition as well. | |||
3159 | // | |||
3160 | // If it's not the case that both 'inline' and 'extern' are | |||
3161 | // specified on the definition, then this inline definition is | |||
3162 | // externally visible. | |||
3163 | if (!(isInlineSpecified() && getStorageClass() == SC_Extern)) | |||
3164 | return true; | |||
3165 | ||||
3166 | // If any declaration is 'inline' but not 'extern', then this definition | |||
3167 | // is externally visible. | |||
3168 | for (auto Redecl : redecls()) { | |||
3169 | if (Redecl->isInlineSpecified() && | |||
3170 | Redecl->getStorageClass() != SC_Extern) | |||
3171 | return true; | |||
3172 | } | |||
3173 | ||||
3174 | return false; | |||
3175 | } | |||
3176 | ||||
3177 | // The rest of this function is C-only. | |||
3178 | assert(!Context.getLangOpts().CPlusPlus &&(static_cast <bool> (!Context.getLangOpts().CPlusPlus && "should not use C inline rules in C++") ? void (0) : __assert_fail ("!Context.getLangOpts().CPlusPlus && \"should not use C inline rules in C++\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3179, __extension__ __PRETTY_FUNCTION__)) | |||
3179 | "should not use C inline rules in C++")(static_cast <bool> (!Context.getLangOpts().CPlusPlus && "should not use C inline rules in C++") ? void (0) : __assert_fail ("!Context.getLangOpts().CPlusPlus && \"should not use C inline rules in C++\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3179, __extension__ __PRETTY_FUNCTION__)); | |||
3180 | ||||
3181 | // C99 6.7.4p6: | |||
3182 | // [...] If all of the file scope declarations for a function in a | |||
3183 | // translation unit include the inline function specifier without extern, | |||
3184 | // then the definition in that translation unit is an inline definition. | |||
3185 | for (auto Redecl : redecls()) { | |||
3186 | if (RedeclForcesDefC99(Redecl)) | |||
3187 | return true; | |||
3188 | } | |||
3189 | ||||
3190 | // C99 6.7.4p6: | |||
3191 | // An inline definition does not provide an external definition for the | |||
3192 | // function, and does not forbid an external definition in another | |||
3193 | // translation unit. | |||
3194 | return false; | |||
3195 | } | |||
3196 | ||||
3197 | /// getOverloadedOperator - Which C++ overloaded operator this | |||
3198 | /// function represents, if any. | |||
3199 | OverloadedOperatorKind FunctionDecl::getOverloadedOperator() const { | |||
3200 | if (getDeclName().getNameKind() == DeclarationName::CXXOperatorName) | |||
3201 | return getDeclName().getCXXOverloadedOperator(); | |||
3202 | else | |||
3203 | return OO_None; | |||
3204 | } | |||
3205 | ||||
3206 | /// getLiteralIdentifier - The literal suffix identifier this function | |||
3207 | /// represents, if any. | |||
3208 | const IdentifierInfo *FunctionDecl::getLiteralIdentifier() const { | |||
3209 | if (getDeclName().getNameKind() == DeclarationName::CXXLiteralOperatorName) | |||
3210 | return getDeclName().getCXXLiteralIdentifier(); | |||
3211 | else | |||
3212 | return nullptr; | |||
3213 | } | |||
3214 | ||||
3215 | FunctionDecl::TemplatedKind FunctionDecl::getTemplatedKind() const { | |||
3216 | if (TemplateOrSpecialization.isNull()) | |||
3217 | return TK_NonTemplate; | |||
3218 | if (TemplateOrSpecialization.is<FunctionTemplateDecl *>()) | |||
3219 | return TK_FunctionTemplate; | |||
3220 | if (TemplateOrSpecialization.is<MemberSpecializationInfo *>()) | |||
3221 | return TK_MemberSpecialization; | |||
3222 | if (TemplateOrSpecialization.is<FunctionTemplateSpecializationInfo *>()) | |||
3223 | return TK_FunctionTemplateSpecialization; | |||
3224 | if (TemplateOrSpecialization.is | |||
3225 | <DependentFunctionTemplateSpecializationInfo*>()) | |||
3226 | return TK_DependentFunctionTemplateSpecialization; | |||
3227 | ||||
3228 | llvm_unreachable("Did we miss a TemplateOrSpecialization type?")::llvm::llvm_unreachable_internal("Did we miss a TemplateOrSpecialization type?" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3228); | |||
3229 | } | |||
3230 | ||||
3231 | FunctionDecl *FunctionDecl::getInstantiatedFromMemberFunction() const { | |||
3232 | if (MemberSpecializationInfo *Info = getMemberSpecializationInfo()) | |||
3233 | return cast<FunctionDecl>(Info->getInstantiatedFrom()); | |||
3234 | ||||
3235 | return nullptr; | |||
3236 | } | |||
3237 | ||||
3238 | MemberSpecializationInfo *FunctionDecl::getMemberSpecializationInfo() const { | |||
3239 | return TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo *>(); | |||
3240 | } | |||
3241 | ||||
3242 | void | |||
3243 | FunctionDecl::setInstantiationOfMemberFunction(ASTContext &C, | |||
3244 | FunctionDecl *FD, | |||
3245 | TemplateSpecializationKind TSK) { | |||
3246 | assert(TemplateOrSpecialization.isNull() &&(static_cast <bool> (TemplateOrSpecialization.isNull() && "Member function is already a specialization") ? void (0) : __assert_fail ("TemplateOrSpecialization.isNull() && \"Member function is already a specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3247, __extension__ __PRETTY_FUNCTION__)) | |||
3247 | "Member function is already a specialization")(static_cast <bool> (TemplateOrSpecialization.isNull() && "Member function is already a specialization") ? void (0) : __assert_fail ("TemplateOrSpecialization.isNull() && \"Member function is already a specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3247, __extension__ __PRETTY_FUNCTION__)); | |||
3248 | MemberSpecializationInfo *Info | |||
3249 | = new (C) MemberSpecializationInfo(FD, TSK); | |||
3250 | TemplateOrSpecialization = Info; | |||
3251 | } | |||
3252 | ||||
3253 | FunctionTemplateDecl *FunctionDecl::getDescribedFunctionTemplate() const { | |||
3254 | return TemplateOrSpecialization.dyn_cast<FunctionTemplateDecl *>(); | |||
3255 | } | |||
3256 | ||||
3257 | void FunctionDecl::setDescribedFunctionTemplate(FunctionTemplateDecl *Template) { | |||
3258 | TemplateOrSpecialization = Template; | |||
3259 | } | |||
3260 | ||||
3261 | bool FunctionDecl::isImplicitlyInstantiable() const { | |||
3262 | // If the function is invalid, it can't be implicitly instantiated. | |||
3263 | if (isInvalidDecl()) | |||
3264 | return false; | |||
3265 | ||||
3266 | switch (getTemplateSpecializationKind()) { | |||
3267 | case TSK_Undeclared: | |||
3268 | case TSK_ExplicitInstantiationDefinition: | |||
3269 | return false; | |||
3270 | ||||
3271 | case TSK_ImplicitInstantiation: | |||
3272 | return true; | |||
3273 | ||||
3274 | // It is possible to instantiate TSK_ExplicitSpecialization kind | |||
3275 | // if the FunctionDecl has a class scope specialization pattern. | |||
3276 | case TSK_ExplicitSpecialization: | |||
3277 | return getClassScopeSpecializationPattern() != nullptr; | |||
3278 | ||||
3279 | case TSK_ExplicitInstantiationDeclaration: | |||
3280 | // Handled below. | |||
3281 | break; | |||
3282 | } | |||
3283 | ||||
3284 | // Find the actual template from which we will instantiate. | |||
3285 | const FunctionDecl *PatternDecl = getTemplateInstantiationPattern(); | |||
3286 | bool HasPattern = false; | |||
3287 | if (PatternDecl) | |||
3288 | HasPattern = PatternDecl->hasBody(PatternDecl); | |||
3289 | ||||
3290 | // C++0x [temp.explicit]p9: | |||
3291 | // Except for inline functions, other explicit instantiation declarations | |||
3292 | // have the effect of suppressing the implicit instantiation of the entity | |||
3293 | // to which they refer. | |||
3294 | if (!HasPattern || !PatternDecl) | |||
3295 | return true; | |||
3296 | ||||
3297 | return PatternDecl->isInlined(); | |||
3298 | } | |||
3299 | ||||
3300 | bool FunctionDecl::isTemplateInstantiation() const { | |||
3301 | switch (getTemplateSpecializationKind()) { | |||
3302 | case TSK_Undeclared: | |||
3303 | case TSK_ExplicitSpecialization: | |||
3304 | return false; | |||
3305 | case TSK_ImplicitInstantiation: | |||
3306 | case TSK_ExplicitInstantiationDeclaration: | |||
3307 | case TSK_ExplicitInstantiationDefinition: | |||
3308 | return true; | |||
3309 | } | |||
3310 | llvm_unreachable("All TSK values handled.")::llvm::llvm_unreachable_internal("All TSK values handled.", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3310); | |||
3311 | } | |||
3312 | ||||
3313 | FunctionDecl *FunctionDecl::getTemplateInstantiationPattern() const { | |||
3314 | // Handle class scope explicit specialization special case. | |||
3315 | if (getTemplateSpecializationKind() == TSK_ExplicitSpecialization) { | |||
3316 | if (auto *Spec = getClassScopeSpecializationPattern()) | |||
3317 | return getDefinitionOrSelf(Spec); | |||
3318 | return nullptr; | |||
3319 | } | |||
3320 | ||||
3321 | // If this is a generic lambda call operator specialization, its | |||
3322 | // instantiation pattern is always its primary template's pattern | |||
3323 | // even if its primary template was instantiated from another | |||
3324 | // member template (which happens with nested generic lambdas). | |||
3325 | // Since a lambda's call operator's body is transformed eagerly, | |||
3326 | // we don't have to go hunting for a prototype definition template | |||
3327 | // (i.e. instantiated-from-member-template) to use as an instantiation | |||
3328 | // pattern. | |||
3329 | ||||
3330 | if (isGenericLambdaCallOperatorSpecialization( | |||
3331 | dyn_cast<CXXMethodDecl>(this))) { | |||
3332 | assert(getPrimaryTemplate() && "not a generic lambda call operator?")(static_cast <bool> (getPrimaryTemplate() && "not a generic lambda call operator?" ) ? void (0) : __assert_fail ("getPrimaryTemplate() && \"not a generic lambda call operator?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3332, __extension__ __PRETTY_FUNCTION__)); | |||
3333 | return getDefinitionOrSelf(getPrimaryTemplate()->getTemplatedDecl()); | |||
3334 | } | |||
3335 | ||||
3336 | if (FunctionTemplateDecl *Primary = getPrimaryTemplate()) { | |||
3337 | while (Primary->getInstantiatedFromMemberTemplate()) { | |||
3338 | // If we have hit a point where the user provided a specialization of | |||
3339 | // this template, we're done looking. | |||
3340 | if (Primary->isMemberSpecialization()) | |||
3341 | break; | |||
3342 | Primary = Primary->getInstantiatedFromMemberTemplate(); | |||
3343 | } | |||
3344 | ||||
3345 | return getDefinitionOrSelf(Primary->getTemplatedDecl()); | |||
3346 | } | |||
3347 | ||||
3348 | if (auto *MFD = getInstantiatedFromMemberFunction()) | |||
3349 | return getDefinitionOrSelf(MFD); | |||
3350 | ||||
3351 | return nullptr; | |||
3352 | } | |||
3353 | ||||
3354 | FunctionTemplateDecl *FunctionDecl::getPrimaryTemplate() const { | |||
3355 | if (FunctionTemplateSpecializationInfo *Info | |||
3356 | = TemplateOrSpecialization | |||
3357 | .dyn_cast<FunctionTemplateSpecializationInfo*>()) { | |||
3358 | return Info->Template.getPointer(); | |||
3359 | } | |||
3360 | return nullptr; | |||
3361 | } | |||
3362 | ||||
3363 | FunctionDecl *FunctionDecl::getClassScopeSpecializationPattern() const { | |||
3364 | return getASTContext().getClassScopeSpecializationPattern(this); | |||
3365 | } | |||
3366 | ||||
3367 | FunctionTemplateSpecializationInfo * | |||
3368 | FunctionDecl::getTemplateSpecializationInfo() const { | |||
3369 | return TemplateOrSpecialization | |||
3370 | .dyn_cast<FunctionTemplateSpecializationInfo *>(); | |||
3371 | } | |||
3372 | ||||
3373 | const TemplateArgumentList * | |||
3374 | FunctionDecl::getTemplateSpecializationArgs() const { | |||
3375 | if (FunctionTemplateSpecializationInfo *Info | |||
3376 | = TemplateOrSpecialization | |||
3377 | .dyn_cast<FunctionTemplateSpecializationInfo*>()) { | |||
3378 | return Info->TemplateArguments; | |||
3379 | } | |||
3380 | return nullptr; | |||
3381 | } | |||
3382 | ||||
3383 | const ASTTemplateArgumentListInfo * | |||
3384 | FunctionDecl::getTemplateSpecializationArgsAsWritten() const { | |||
3385 | if (FunctionTemplateSpecializationInfo *Info | |||
3386 | = TemplateOrSpecialization | |||
3387 | .dyn_cast<FunctionTemplateSpecializationInfo*>()) { | |||
3388 | return Info->TemplateArgumentsAsWritten; | |||
3389 | } | |||
3390 | return nullptr; | |||
3391 | } | |||
3392 | ||||
3393 | void | |||
3394 | FunctionDecl::setFunctionTemplateSpecialization(ASTContext &C, | |||
3395 | FunctionTemplateDecl *Template, | |||
3396 | const TemplateArgumentList *TemplateArgs, | |||
3397 | void *InsertPos, | |||
3398 | TemplateSpecializationKind TSK, | |||
3399 | const TemplateArgumentListInfo *TemplateArgsAsWritten, | |||
3400 | SourceLocation PointOfInstantiation) { | |||
3401 | assert(TSK != TSK_Undeclared &&(static_cast <bool> (TSK != TSK_Undeclared && "Must specify the type of function template specialization" ) ? void (0) : __assert_fail ("TSK != TSK_Undeclared && \"Must specify the type of function template specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3402, __extension__ __PRETTY_FUNCTION__)) | |||
3402 | "Must specify the type of function template specialization")(static_cast <bool> (TSK != TSK_Undeclared && "Must specify the type of function template specialization" ) ? void (0) : __assert_fail ("TSK != TSK_Undeclared && \"Must specify the type of function template specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3402, __extension__ __PRETTY_FUNCTION__)); | |||
3403 | FunctionTemplateSpecializationInfo *Info | |||
3404 | = TemplateOrSpecialization.dyn_cast<FunctionTemplateSpecializationInfo*>(); | |||
3405 | if (!Info) | |||
3406 | Info = FunctionTemplateSpecializationInfo::Create(C, this, Template, TSK, | |||
3407 | TemplateArgs, | |||
3408 | TemplateArgsAsWritten, | |||
3409 | PointOfInstantiation); | |||
3410 | TemplateOrSpecialization = Info; | |||
3411 | Template->addSpecialization(Info, InsertPos); | |||
3412 | } | |||
3413 | ||||
3414 | void | |||
3415 | FunctionDecl::setDependentTemplateSpecialization(ASTContext &Context, | |||
3416 | const UnresolvedSetImpl &Templates, | |||
3417 | const TemplateArgumentListInfo &TemplateArgs) { | |||
3418 | assert(TemplateOrSpecialization.isNull())(static_cast <bool> (TemplateOrSpecialization.isNull()) ? void (0) : __assert_fail ("TemplateOrSpecialization.isNull()" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3418, __extension__ __PRETTY_FUNCTION__)); | |||
3419 | DependentFunctionTemplateSpecializationInfo *Info = | |||
3420 | DependentFunctionTemplateSpecializationInfo::Create(Context, Templates, | |||
3421 | TemplateArgs); | |||
3422 | TemplateOrSpecialization = Info; | |||
3423 | } | |||
3424 | ||||
3425 | DependentFunctionTemplateSpecializationInfo * | |||
3426 | FunctionDecl::getDependentSpecializationInfo() const { | |||
3427 | return TemplateOrSpecialization | |||
3428 | .dyn_cast<DependentFunctionTemplateSpecializationInfo *>(); | |||
3429 | } | |||
3430 | ||||
3431 | DependentFunctionTemplateSpecializationInfo * | |||
3432 | DependentFunctionTemplateSpecializationInfo::Create( | |||
3433 | ASTContext &Context, const UnresolvedSetImpl &Ts, | |||
3434 | const TemplateArgumentListInfo &TArgs) { | |||
3435 | void *Buffer = Context.Allocate( | |||
3436 | totalSizeToAlloc<TemplateArgumentLoc, FunctionTemplateDecl *>( | |||
3437 | TArgs.size(), Ts.size())); | |||
3438 | return new (Buffer) DependentFunctionTemplateSpecializationInfo(Ts, TArgs); | |||
3439 | } | |||
3440 | ||||
3441 | DependentFunctionTemplateSpecializationInfo:: | |||
3442 | DependentFunctionTemplateSpecializationInfo(const UnresolvedSetImpl &Ts, | |||
3443 | const TemplateArgumentListInfo &TArgs) | |||
3444 | : AngleLocs(TArgs.getLAngleLoc(), TArgs.getRAngleLoc()) { | |||
3445 | NumTemplates = Ts.size(); | |||
3446 | NumArgs = TArgs.size(); | |||
3447 | ||||
3448 | FunctionTemplateDecl **TsArray = getTrailingObjects<FunctionTemplateDecl *>(); | |||
3449 | for (unsigned I = 0, E = Ts.size(); I != E; ++I) | |||
3450 | TsArray[I] = cast<FunctionTemplateDecl>(Ts[I]->getUnderlyingDecl()); | |||
3451 | ||||
3452 | TemplateArgumentLoc *ArgsArray = getTrailingObjects<TemplateArgumentLoc>(); | |||
3453 | for (unsigned I = 0, E = TArgs.size(); I != E; ++I) | |||
3454 | new (&ArgsArray[I]) TemplateArgumentLoc(TArgs[I]); | |||
3455 | } | |||
3456 | ||||
3457 | TemplateSpecializationKind FunctionDecl::getTemplateSpecializationKind() const { | |||
3458 | // For a function template specialization, query the specialization | |||
3459 | // information object. | |||
3460 | FunctionTemplateSpecializationInfo *FTSInfo | |||
3461 | = TemplateOrSpecialization.dyn_cast<FunctionTemplateSpecializationInfo*>(); | |||
3462 | if (FTSInfo) | |||
3463 | return FTSInfo->getTemplateSpecializationKind(); | |||
3464 | ||||
3465 | MemberSpecializationInfo *MSInfo | |||
3466 | = TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>(); | |||
3467 | if (MSInfo) | |||
3468 | return MSInfo->getTemplateSpecializationKind(); | |||
3469 | ||||
3470 | return TSK_Undeclared; | |||
3471 | } | |||
3472 | ||||
3473 | void | |||
3474 | FunctionDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK, | |||
3475 | SourceLocation PointOfInstantiation) { | |||
3476 | if (FunctionTemplateSpecializationInfo *FTSInfo | |||
3477 | = TemplateOrSpecialization.dyn_cast< | |||
3478 | FunctionTemplateSpecializationInfo*>()) { | |||
3479 | FTSInfo->setTemplateSpecializationKind(TSK); | |||
3480 | if (TSK != TSK_ExplicitSpecialization && | |||
3481 | PointOfInstantiation.isValid() && | |||
3482 | FTSInfo->getPointOfInstantiation().isInvalid()) { | |||
3483 | FTSInfo->setPointOfInstantiation(PointOfInstantiation); | |||
3484 | if (ASTMutationListener *L = getASTContext().getASTMutationListener()) | |||
3485 | L->InstantiationRequested(this); | |||
3486 | } | |||
3487 | } else if (MemberSpecializationInfo *MSInfo | |||
3488 | = TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>()) { | |||
3489 | MSInfo->setTemplateSpecializationKind(TSK); | |||
3490 | if (TSK != TSK_ExplicitSpecialization && | |||
3491 | PointOfInstantiation.isValid() && | |||
3492 | MSInfo->getPointOfInstantiation().isInvalid()) { | |||
3493 | MSInfo->setPointOfInstantiation(PointOfInstantiation); | |||
3494 | if (ASTMutationListener *L = getASTContext().getASTMutationListener()) | |||
3495 | L->InstantiationRequested(this); | |||
3496 | } | |||
3497 | } else | |||
3498 | llvm_unreachable("Function cannot have a template specialization kind")::llvm::llvm_unreachable_internal("Function cannot have a template specialization kind" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3498); | |||
3499 | } | |||
3500 | ||||
3501 | SourceLocation FunctionDecl::getPointOfInstantiation() const { | |||
3502 | if (FunctionTemplateSpecializationInfo *FTSInfo | |||
3503 | = TemplateOrSpecialization.dyn_cast< | |||
3504 | FunctionTemplateSpecializationInfo*>()) | |||
3505 | return FTSInfo->getPointOfInstantiation(); | |||
3506 | else if (MemberSpecializationInfo *MSInfo | |||
3507 | = TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo*>()) | |||
3508 | return MSInfo->getPointOfInstantiation(); | |||
3509 | ||||
3510 | return SourceLocation(); | |||
3511 | } | |||
3512 | ||||
3513 | bool FunctionDecl::isOutOfLine() const { | |||
3514 | if (Decl::isOutOfLine()) | |||
3515 | return true; | |||
3516 | ||||
3517 | // If this function was instantiated from a member function of a | |||
3518 | // class template, check whether that member function was defined out-of-line. | |||
3519 | if (FunctionDecl *FD = getInstantiatedFromMemberFunction()) { | |||
3520 | const FunctionDecl *Definition; | |||
3521 | if (FD->hasBody(Definition)) | |||
3522 | return Definition->isOutOfLine(); | |||
3523 | } | |||
3524 | ||||
3525 | // If this function was instantiated from a function template, | |||
3526 | // check whether that function template was defined out-of-line. | |||
3527 | if (FunctionTemplateDecl *FunTmpl = getPrimaryTemplate()) { | |||
3528 | const FunctionDecl *Definition; | |||
3529 | if (FunTmpl->getTemplatedDecl()->hasBody(Definition)) | |||
3530 | return Definition->isOutOfLine(); | |||
3531 | } | |||
3532 | ||||
3533 | return false; | |||
3534 | } | |||
3535 | ||||
3536 | SourceRange FunctionDecl::getSourceRange() const { | |||
3537 | return SourceRange(getOuterLocStart(), EndRangeLoc); | |||
3538 | } | |||
3539 | ||||
3540 | unsigned FunctionDecl::getMemoryFunctionKind() const { | |||
3541 | IdentifierInfo *FnInfo = getIdentifier(); | |||
3542 | ||||
3543 | if (!FnInfo) | |||
3544 | return 0; | |||
3545 | ||||
3546 | // Builtin handling. | |||
3547 | switch (getBuiltinID()) { | |||
3548 | case Builtin::BI__builtin_memset: | |||
3549 | case Builtin::BI__builtin___memset_chk: | |||
3550 | case Builtin::BImemset: | |||
3551 | return Builtin::BImemset; | |||
3552 | ||||
3553 | case Builtin::BI__builtin_memcpy: | |||
3554 | case Builtin::BI__builtin___memcpy_chk: | |||
3555 | case Builtin::BImemcpy: | |||
3556 | return Builtin::BImemcpy; | |||
3557 | ||||
3558 | case Builtin::BI__builtin_memmove: | |||
3559 | case Builtin::BI__builtin___memmove_chk: | |||
3560 | case Builtin::BImemmove: | |||
3561 | return Builtin::BImemmove; | |||
3562 | ||||
3563 | // case Builtin::BIstrlcpy: | |||
3564 | // case Builtin::BI__builtin___strlcpy_chk: | |||
3565 | // return Builtin::BIstrlcpy; | |||
3566 | ||||
3567 | // case Builtin::BIstrlcat: | |||
3568 | // case Builtin::BI__builtin___strlcat_chk: | |||
3569 | // return Builtin::BIstrlcat; | |||
3570 | ||||
3571 | case Builtin::BI__builtin_memcmp: | |||
3572 | case Builtin::BImemcmp: | |||
3573 | return Builtin::BImemcmp; | |||
3574 | ||||
3575 | case Builtin::BI__builtin_strncpy: | |||
3576 | case Builtin::BI__builtin___strncpy_chk: | |||
3577 | case Builtin::BIstrncpy: | |||
3578 | return Builtin::BIstrncpy; | |||
3579 | ||||
3580 | case Builtin::BI__builtin_strncmp: | |||
3581 | case Builtin::BIstrncmp: | |||
3582 | return Builtin::BIstrncmp; | |||
3583 | ||||
3584 | case Builtin::BI__builtin_strncasecmp: | |||
3585 | case Builtin::BIstrncasecmp: | |||
3586 | return Builtin::BIstrncasecmp; | |||
3587 | ||||
3588 | case Builtin::BI__builtin_strncat: | |||
3589 | case Builtin::BI__builtin___strncat_chk: | |||
3590 | case Builtin::BIstrncat: | |||
3591 | return Builtin::BIstrncat; | |||
3592 | ||||
3593 | case Builtin::BI__builtin_strndup: | |||
3594 | case Builtin::BIstrndup: | |||
3595 | return Builtin::BIstrndup; | |||
3596 | ||||
3597 | case Builtin::BI__builtin_strlen: | |||
3598 | case Builtin::BIstrlen: | |||
3599 | return Builtin::BIstrlen; | |||
3600 | ||||
3601 | case Builtin::BI__builtin_bzero: | |||
3602 | case Builtin::BIbzero: | |||
3603 | return Builtin::BIbzero; | |||
3604 | ||||
3605 | default: | |||
3606 | if (isExternC()) { | |||
3607 | if (FnInfo->isStr("memset")) | |||
3608 | return Builtin::BImemset; | |||
3609 | else if (FnInfo->isStr("memcpy")) | |||
3610 | return Builtin::BImemcpy; | |||
3611 | else if (FnInfo->isStr("memmove")) | |||
3612 | return Builtin::BImemmove; | |||
3613 | else if (FnInfo->isStr("memcmp")) | |||
3614 | return Builtin::BImemcmp; | |||
3615 | else if (FnInfo->isStr("strncpy")) | |||
3616 | return Builtin::BIstrncpy; | |||
3617 | else if (FnInfo->isStr("strncmp")) | |||
3618 | return Builtin::BIstrncmp; | |||
3619 | else if (FnInfo->isStr("strncasecmp")) | |||
3620 | return Builtin::BIstrncasecmp; | |||
3621 | else if (FnInfo->isStr("strncat")) | |||
3622 | return Builtin::BIstrncat; | |||
3623 | else if (FnInfo->isStr("strndup")) | |||
3624 | return Builtin::BIstrndup; | |||
3625 | else if (FnInfo->isStr("strlen")) | |||
3626 | return Builtin::BIstrlen; | |||
3627 | else if (FnInfo->isStr("bzero")) | |||
3628 | return Builtin::BIbzero; | |||
3629 | } | |||
3630 | break; | |||
3631 | } | |||
3632 | return 0; | |||
3633 | } | |||
3634 | ||||
3635 | unsigned FunctionDecl::getODRHash() { | |||
3636 | if (HasODRHash) | |||
3637 | return ODRHash; | |||
3638 | ||||
3639 | if (FunctionDecl *Definition = getDefinition()) { | |||
3640 | if (Definition != this) { | |||
3641 | HasODRHash = true; | |||
3642 | ODRHash = Definition->getODRHash(); | |||
3643 | return ODRHash; | |||
3644 | } | |||
3645 | } | |||
3646 | ||||
3647 | if (auto *FT = getInstantiatedFromMemberFunction()) { | |||
3648 | HasODRHash = true; | |||
3649 | ODRHash = FT->getODRHash(); | |||
3650 | return ODRHash; | |||
3651 | } | |||
3652 | ||||
3653 | class ODRHash Hash; | |||
3654 | Hash.AddFunctionDecl(this); | |||
3655 | HasODRHash = true; | |||
3656 | ODRHash = Hash.CalculateHash(); | |||
3657 | return ODRHash; | |||
3658 | } | |||
3659 | ||||
3660 | //===----------------------------------------------------------------------===// | |||
3661 | // FieldDecl Implementation | |||
3662 | //===----------------------------------------------------------------------===// | |||
3663 | ||||
3664 | FieldDecl *FieldDecl::Create(const ASTContext &C, DeclContext *DC, | |||
3665 | SourceLocation StartLoc, SourceLocation IdLoc, | |||
3666 | IdentifierInfo *Id, QualType T, | |||
3667 | TypeSourceInfo *TInfo, Expr *BW, bool Mutable, | |||
3668 | InClassInitStyle InitStyle) { | |||
3669 | return new (C, DC) FieldDecl(Decl::Field, DC, StartLoc, IdLoc, Id, T, TInfo, | |||
3670 | BW, Mutable, InitStyle); | |||
3671 | } | |||
3672 | ||||
3673 | FieldDecl *FieldDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
3674 | return new (C, ID) FieldDecl(Field, nullptr, SourceLocation(), | |||
3675 | SourceLocation(), nullptr, QualType(), nullptr, | |||
3676 | nullptr, false, ICIS_NoInit); | |||
3677 | } | |||
3678 | ||||
3679 | bool FieldDecl::isAnonymousStructOrUnion() const { | |||
3680 | if (!isImplicit() || getDeclName()) | |||
3681 | return false; | |||
3682 | ||||
3683 | if (const auto *Record = getType()->getAs<RecordType>()) | |||
3684 | return Record->getDecl()->isAnonymousStructOrUnion(); | |||
3685 | ||||
3686 | return false; | |||
3687 | } | |||
3688 | ||||
3689 | unsigned FieldDecl::getBitWidthValue(const ASTContext &Ctx) const { | |||
3690 | assert(isBitField() && "not a bitfield")(static_cast <bool> (isBitField() && "not a bitfield" ) ? void (0) : __assert_fail ("isBitField() && \"not a bitfield\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3690, __extension__ __PRETTY_FUNCTION__)); | |||
3691 | return getBitWidth()->EvaluateKnownConstInt(Ctx).getZExtValue(); | |||
3692 | } | |||
3693 | ||||
3694 | bool FieldDecl::isZeroLengthBitField(const ASTContext &Ctx) const { | |||
3695 | return isUnnamedBitfield() && !getBitWidth()->isValueDependent() && | |||
3696 | getBitWidthValue(Ctx) == 0; | |||
3697 | } | |||
3698 | ||||
3699 | unsigned FieldDecl::getFieldIndex() const { | |||
3700 | const FieldDecl *Canonical = getCanonicalDecl(); | |||
3701 | if (Canonical != this) | |||
3702 | return Canonical->getFieldIndex(); | |||
3703 | ||||
3704 | if (CachedFieldIndex) return CachedFieldIndex - 1; | |||
3705 | ||||
3706 | unsigned Index = 0; | |||
3707 | const RecordDecl *RD = getParent()->getDefinition(); | |||
3708 | assert(RD && "requested index for field of struct with no definition")(static_cast <bool> (RD && "requested index for field of struct with no definition" ) ? void (0) : __assert_fail ("RD && \"requested index for field of struct with no definition\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3708, __extension__ __PRETTY_FUNCTION__)); | |||
3709 | ||||
3710 | for (auto *Field : RD->fields()) { | |||
3711 | Field->getCanonicalDecl()->CachedFieldIndex = Index + 1; | |||
3712 | ++Index; | |||
3713 | } | |||
3714 | ||||
3715 | assert(CachedFieldIndex && "failed to find field in parent")(static_cast <bool> (CachedFieldIndex && "failed to find field in parent" ) ? void (0) : __assert_fail ("CachedFieldIndex && \"failed to find field in parent\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3715, __extension__ __PRETTY_FUNCTION__)); | |||
3716 | return CachedFieldIndex - 1; | |||
3717 | } | |||
3718 | ||||
3719 | SourceRange FieldDecl::getSourceRange() const { | |||
3720 | const Expr *FinalExpr = getInClassInitializer(); | |||
3721 | if (!FinalExpr) | |||
3722 | FinalExpr = getBitWidth(); | |||
3723 | if (FinalExpr) | |||
3724 | return SourceRange(getInnerLocStart(), FinalExpr->getLocEnd()); | |||
3725 | return DeclaratorDecl::getSourceRange(); | |||
3726 | } | |||
3727 | ||||
3728 | void FieldDecl::setCapturedVLAType(const VariableArrayType *VLAType) { | |||
3729 | assert((getParent()->isLambda() || getParent()->isCapturedRecord()) &&(static_cast <bool> ((getParent()->isLambda() || getParent ()->isCapturedRecord()) && "capturing type in non-lambda or captured record." ) ? void (0) : __assert_fail ("(getParent()->isLambda() || getParent()->isCapturedRecord()) && \"capturing type in non-lambda or captured record.\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3730, __extension__ __PRETTY_FUNCTION__)) | |||
3730 | "capturing type in non-lambda or captured record.")(static_cast <bool> ((getParent()->isLambda() || getParent ()->isCapturedRecord()) && "capturing type in non-lambda or captured record." ) ? void (0) : __assert_fail ("(getParent()->isLambda() || getParent()->isCapturedRecord()) && \"capturing type in non-lambda or captured record.\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3730, __extension__ __PRETTY_FUNCTION__)); | |||
3731 | assert(InitStorage.getInt() == ISK_NoInit &&(static_cast <bool> (InitStorage.getInt() == ISK_NoInit && InitStorage.getPointer() == nullptr && "bit width, initializer or captured type already set" ) ? void (0) : __assert_fail ("InitStorage.getInt() == ISK_NoInit && InitStorage.getPointer() == nullptr && \"bit width, initializer or captured type already set\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3733, __extension__ __PRETTY_FUNCTION__)) | |||
3732 | InitStorage.getPointer() == nullptr &&(static_cast <bool> (InitStorage.getInt() == ISK_NoInit && InitStorage.getPointer() == nullptr && "bit width, initializer or captured type already set" ) ? void (0) : __assert_fail ("InitStorage.getInt() == ISK_NoInit && InitStorage.getPointer() == nullptr && \"bit width, initializer or captured type already set\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3733, __extension__ __PRETTY_FUNCTION__)) | |||
3733 | "bit width, initializer or captured type already set")(static_cast <bool> (InitStorage.getInt() == ISK_NoInit && InitStorage.getPointer() == nullptr && "bit width, initializer or captured type already set" ) ? void (0) : __assert_fail ("InitStorage.getInt() == ISK_NoInit && InitStorage.getPointer() == nullptr && \"bit width, initializer or captured type already set\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3733, __extension__ __PRETTY_FUNCTION__)); | |||
3734 | InitStorage.setPointerAndInt(const_cast<VariableArrayType *>(VLAType), | |||
3735 | ISK_CapturedVLAType); | |||
3736 | } | |||
3737 | ||||
3738 | //===----------------------------------------------------------------------===// | |||
3739 | // TagDecl Implementation | |||
3740 | //===----------------------------------------------------------------------===// | |||
3741 | ||||
3742 | SourceLocation TagDecl::getOuterLocStart() const { | |||
3743 | return getTemplateOrInnerLocStart(this); | |||
3744 | } | |||
3745 | ||||
3746 | SourceRange TagDecl::getSourceRange() const { | |||
3747 | SourceLocation RBraceLoc = BraceRange.getEnd(); | |||
3748 | SourceLocation E = RBraceLoc.isValid() ? RBraceLoc : getLocation(); | |||
3749 | return SourceRange(getOuterLocStart(), E); | |||
3750 | } | |||
3751 | ||||
3752 | TagDecl *TagDecl::getCanonicalDecl() { return getFirstDecl(); } | |||
3753 | ||||
3754 | void TagDecl::setTypedefNameForAnonDecl(TypedefNameDecl *TDD) { | |||
3755 | TypedefNameDeclOrQualifier = TDD; | |||
3756 | if (const Type *T = getTypeForDecl()) { | |||
3757 | (void)T; | |||
3758 | assert(T->isLinkageValid())(static_cast <bool> (T->isLinkageValid()) ? void (0) : __assert_fail ("T->isLinkageValid()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3758, __extension__ __PRETTY_FUNCTION__)); | |||
3759 | } | |||
3760 | assert(isLinkageValid())(static_cast <bool> (isLinkageValid()) ? void (0) : __assert_fail ("isLinkageValid()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3760, __extension__ __PRETTY_FUNCTION__)); | |||
3761 | } | |||
3762 | ||||
3763 | void TagDecl::startDefinition() { | |||
3764 | IsBeingDefined = true; | |||
3765 | ||||
3766 | if (auto *D = dyn_cast<CXXRecordDecl>(this)) { | |||
3767 | struct CXXRecordDecl::DefinitionData *Data = | |||
3768 | new (getASTContext()) struct CXXRecordDecl::DefinitionData(D); | |||
3769 | for (auto I : redecls()) | |||
3770 | cast<CXXRecordDecl>(I)->DefinitionData = Data; | |||
3771 | } | |||
3772 | } | |||
3773 | ||||
3774 | void TagDecl::completeDefinition() { | |||
3775 | assert((!isa<CXXRecordDecl>(this) ||(static_cast <bool> ((!isa<CXXRecordDecl>(this) || cast<CXXRecordDecl>(this)->hasDefinition()) && "definition completed but not started") ? void (0) : __assert_fail ("(!isa<CXXRecordDecl>(this) || cast<CXXRecordDecl>(this)->hasDefinition()) && \"definition completed but not started\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3777, __extension__ __PRETTY_FUNCTION__)) | |||
3776 | cast<CXXRecordDecl>(this)->hasDefinition()) &&(static_cast <bool> ((!isa<CXXRecordDecl>(this) || cast<CXXRecordDecl>(this)->hasDefinition()) && "definition completed but not started") ? void (0) : __assert_fail ("(!isa<CXXRecordDecl>(this) || cast<CXXRecordDecl>(this)->hasDefinition()) && \"definition completed but not started\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3777, __extension__ __PRETTY_FUNCTION__)) | |||
3777 | "definition completed but not started")(static_cast <bool> ((!isa<CXXRecordDecl>(this) || cast<CXXRecordDecl>(this)->hasDefinition()) && "definition completed but not started") ? void (0) : __assert_fail ("(!isa<CXXRecordDecl>(this) || cast<CXXRecordDecl>(this)->hasDefinition()) && \"definition completed but not started\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3777, __extension__ __PRETTY_FUNCTION__)); | |||
3778 | ||||
3779 | IsCompleteDefinition = true; | |||
3780 | IsBeingDefined = false; | |||
3781 | ||||
3782 | if (ASTMutationListener *L = getASTMutationListener()) | |||
3783 | L->CompletedTagDefinition(this); | |||
3784 | } | |||
3785 | ||||
3786 | TagDecl *TagDecl::getDefinition() const { | |||
3787 | if (isCompleteDefinition()) | |||
3788 | return const_cast<TagDecl *>(this); | |||
3789 | ||||
3790 | // If it's possible for us to have an out-of-date definition, check now. | |||
3791 | if (MayHaveOutOfDateDef) { | |||
3792 | if (IdentifierInfo *II = getIdentifier()) { | |||
3793 | if (II->isOutOfDate()) { | |||
3794 | updateOutOfDate(*II); | |||
3795 | } | |||
3796 | } | |||
3797 | } | |||
3798 | ||||
3799 | if (const auto *CXXRD = dyn_cast<CXXRecordDecl>(this)) | |||
3800 | return CXXRD->getDefinition(); | |||
3801 | ||||
3802 | for (auto R : redecls()) | |||
3803 | if (R->isCompleteDefinition()) | |||
3804 | return R; | |||
3805 | ||||
3806 | return nullptr; | |||
3807 | } | |||
3808 | ||||
3809 | void TagDecl::setQualifierInfo(NestedNameSpecifierLoc QualifierLoc) { | |||
3810 | if (QualifierLoc) { | |||
3811 | // Make sure the extended qualifier info is allocated. | |||
3812 | if (!hasExtInfo()) | |||
3813 | TypedefNameDeclOrQualifier = new (getASTContext()) ExtInfo; | |||
3814 | // Set qualifier info. | |||
3815 | getExtInfo()->QualifierLoc = QualifierLoc; | |||
3816 | } else { | |||
3817 | // Here Qualifier == 0, i.e., we are removing the qualifier (if any). | |||
3818 | if (hasExtInfo()) { | |||
3819 | if (getExtInfo()->NumTemplParamLists == 0) { | |||
3820 | getASTContext().Deallocate(getExtInfo()); | |||
3821 | TypedefNameDeclOrQualifier = (TypedefNameDecl *)nullptr; | |||
3822 | } | |||
3823 | else | |||
3824 | getExtInfo()->QualifierLoc = QualifierLoc; | |||
3825 | } | |||
3826 | } | |||
3827 | } | |||
3828 | ||||
3829 | void TagDecl::setTemplateParameterListsInfo( | |||
3830 | ASTContext &Context, ArrayRef<TemplateParameterList *> TPLists) { | |||
3831 | assert(!TPLists.empty())(static_cast <bool> (!TPLists.empty()) ? void (0) : __assert_fail ("!TPLists.empty()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3831, __extension__ __PRETTY_FUNCTION__)); | |||
3832 | // Make sure the extended decl info is allocated. | |||
3833 | if (!hasExtInfo()) | |||
3834 | // Allocate external info struct. | |||
3835 | TypedefNameDeclOrQualifier = new (getASTContext()) ExtInfo; | |||
3836 | // Set the template parameter lists info. | |||
3837 | getExtInfo()->setTemplateParameterListsInfo(Context, TPLists); | |||
3838 | } | |||
3839 | ||||
3840 | //===----------------------------------------------------------------------===// | |||
3841 | // EnumDecl Implementation | |||
3842 | //===----------------------------------------------------------------------===// | |||
3843 | ||||
3844 | void EnumDecl::anchor() {} | |||
3845 | ||||
3846 | EnumDecl *EnumDecl::Create(ASTContext &C, DeclContext *DC, | |||
3847 | SourceLocation StartLoc, SourceLocation IdLoc, | |||
3848 | IdentifierInfo *Id, | |||
3849 | EnumDecl *PrevDecl, bool IsScoped, | |||
3850 | bool IsScopedUsingClassTag, bool IsFixed) { | |||
3851 | auto *Enum = new (C, DC) EnumDecl(C, DC, StartLoc, IdLoc, Id, PrevDecl, | |||
3852 | IsScoped, IsScopedUsingClassTag, IsFixed); | |||
3853 | Enum->MayHaveOutOfDateDef = C.getLangOpts().Modules; | |||
3854 | C.getTypeDeclType(Enum, PrevDecl); | |||
3855 | return Enum; | |||
3856 | } | |||
3857 | ||||
3858 | EnumDecl *EnumDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
3859 | EnumDecl *Enum = | |||
3860 | new (C, ID) EnumDecl(C, nullptr, SourceLocation(), SourceLocation(), | |||
3861 | nullptr, nullptr, false, false, false); | |||
3862 | Enum->MayHaveOutOfDateDef = C.getLangOpts().Modules; | |||
3863 | return Enum; | |||
3864 | } | |||
3865 | ||||
3866 | SourceRange EnumDecl::getIntegerTypeRange() const { | |||
3867 | if (const TypeSourceInfo *TI = getIntegerTypeSourceInfo()) | |||
3868 | return TI->getTypeLoc().getSourceRange(); | |||
3869 | return SourceRange(); | |||
3870 | } | |||
3871 | ||||
3872 | void EnumDecl::completeDefinition(QualType NewType, | |||
3873 | QualType NewPromotionType, | |||
3874 | unsigned NumPositiveBits, | |||
3875 | unsigned NumNegativeBits) { | |||
3876 | assert(!isCompleteDefinition() && "Cannot redefine enums!")(static_cast <bool> (!isCompleteDefinition() && "Cannot redefine enums!") ? void (0) : __assert_fail ("!isCompleteDefinition() && \"Cannot redefine enums!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3876, __extension__ __PRETTY_FUNCTION__)); | |||
3877 | if (!IntegerType) | |||
3878 | IntegerType = NewType.getTypePtr(); | |||
3879 | PromotionType = NewPromotionType; | |||
3880 | setNumPositiveBits(NumPositiveBits); | |||
3881 | setNumNegativeBits(NumNegativeBits); | |||
3882 | TagDecl::completeDefinition(); | |||
3883 | } | |||
3884 | ||||
3885 | bool EnumDecl::isClosed() const { | |||
3886 | if (const auto *A = getAttr<EnumExtensibilityAttr>()) | |||
3887 | return A->getExtensibility() == EnumExtensibilityAttr::Closed; | |||
3888 | return true; | |||
3889 | } | |||
3890 | ||||
3891 | bool EnumDecl::isClosedFlag() const { | |||
3892 | return isClosed() && hasAttr<FlagEnumAttr>(); | |||
3893 | } | |||
3894 | ||||
3895 | bool EnumDecl::isClosedNonFlag() const { | |||
3896 | return isClosed() && !hasAttr<FlagEnumAttr>(); | |||
3897 | } | |||
3898 | ||||
3899 | TemplateSpecializationKind EnumDecl::getTemplateSpecializationKind() const { | |||
3900 | if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo()) | |||
3901 | return MSI->getTemplateSpecializationKind(); | |||
3902 | ||||
3903 | return TSK_Undeclared; | |||
3904 | } | |||
3905 | ||||
3906 | void EnumDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK, | |||
3907 | SourceLocation PointOfInstantiation) { | |||
3908 | MemberSpecializationInfo *MSI = getMemberSpecializationInfo(); | |||
3909 | assert(MSI && "Not an instantiated member enumeration?")(static_cast <bool> (MSI && "Not an instantiated member enumeration?" ) ? void (0) : __assert_fail ("MSI && \"Not an instantiated member enumeration?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3909, __extension__ __PRETTY_FUNCTION__)); | |||
3910 | MSI->setTemplateSpecializationKind(TSK); | |||
3911 | if (TSK != TSK_ExplicitSpecialization && | |||
3912 | PointOfInstantiation.isValid() && | |||
3913 | MSI->getPointOfInstantiation().isInvalid()) | |||
3914 | MSI->setPointOfInstantiation(PointOfInstantiation); | |||
3915 | } | |||
3916 | ||||
3917 | EnumDecl *EnumDecl::getTemplateInstantiationPattern() const { | |||
3918 | if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) { | |||
3919 | if (isTemplateInstantiation(MSInfo->getTemplateSpecializationKind())) { | |||
3920 | EnumDecl *ED = getInstantiatedFromMemberEnum(); | |||
3921 | while (auto *NewED = ED->getInstantiatedFromMemberEnum()) | |||
3922 | ED = NewED; | |||
3923 | return getDefinitionOrSelf(ED); | |||
3924 | } | |||
3925 | } | |||
3926 | ||||
3927 | assert(!isTemplateInstantiation(getTemplateSpecializationKind()) &&(static_cast <bool> (!isTemplateInstantiation(getTemplateSpecializationKind ()) && "couldn't find pattern for enum instantiation" ) ? void (0) : __assert_fail ("!isTemplateInstantiation(getTemplateSpecializationKind()) && \"couldn't find pattern for enum instantiation\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3928, __extension__ __PRETTY_FUNCTION__)) | |||
3928 | "couldn't find pattern for enum instantiation")(static_cast <bool> (!isTemplateInstantiation(getTemplateSpecializationKind ()) && "couldn't find pattern for enum instantiation" ) ? void (0) : __assert_fail ("!isTemplateInstantiation(getTemplateSpecializationKind()) && \"couldn't find pattern for enum instantiation\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3928, __extension__ __PRETTY_FUNCTION__)); | |||
3929 | return nullptr; | |||
3930 | } | |||
3931 | ||||
3932 | EnumDecl *EnumDecl::getInstantiatedFromMemberEnum() const { | |||
3933 | if (SpecializationInfo) | |||
3934 | return cast<EnumDecl>(SpecializationInfo->getInstantiatedFrom()); | |||
3935 | ||||
3936 | return nullptr; | |||
3937 | } | |||
3938 | ||||
3939 | void EnumDecl::setInstantiationOfMemberEnum(ASTContext &C, EnumDecl *ED, | |||
3940 | TemplateSpecializationKind TSK) { | |||
3941 | assert(!SpecializationInfo && "Member enum is already a specialization")(static_cast <bool> (!SpecializationInfo && "Member enum is already a specialization" ) ? void (0) : __assert_fail ("!SpecializationInfo && \"Member enum is already a specialization\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3941, __extension__ __PRETTY_FUNCTION__)); | |||
3942 | SpecializationInfo = new (C) MemberSpecializationInfo(ED, TSK); | |||
3943 | } | |||
3944 | ||||
3945 | //===----------------------------------------------------------------------===// | |||
3946 | // RecordDecl Implementation | |||
3947 | //===----------------------------------------------------------------------===// | |||
3948 | ||||
3949 | RecordDecl::RecordDecl(Kind DK, TagKind TK, const ASTContext &C, | |||
3950 | DeclContext *DC, SourceLocation StartLoc, | |||
3951 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
3952 | RecordDecl *PrevDecl) | |||
3953 | : TagDecl(DK, TK, C, DC, IdLoc, Id, PrevDecl, StartLoc), | |||
3954 | HasFlexibleArrayMember(false), AnonymousStructOrUnion(false), | |||
3955 | HasObjectMember(false), HasVolatileMember(false), | |||
3956 | LoadedFieldsFromExternalStorage(false), | |||
3957 | NonTrivialToPrimitiveDefaultInitialize(false), | |||
3958 | NonTrivialToPrimitiveCopy(false), NonTrivialToPrimitiveDestroy(false), | |||
3959 | ParamDestroyedInCallee(false), ArgPassingRestrictions(APK_CanPassInRegs) { | |||
3960 | assert(classof(static_cast<Decl*>(this)) && "Invalid Kind!")(static_cast <bool> (classof(static_cast<Decl*>(this )) && "Invalid Kind!") ? void (0) : __assert_fail ("classof(static_cast<Decl*>(this)) && \"Invalid Kind!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 3960, __extension__ __PRETTY_FUNCTION__)); | |||
3961 | } | |||
3962 | ||||
3963 | RecordDecl *RecordDecl::Create(const ASTContext &C, TagKind TK, DeclContext *DC, | |||
3964 | SourceLocation StartLoc, SourceLocation IdLoc, | |||
3965 | IdentifierInfo *Id, RecordDecl* PrevDecl) { | |||
3966 | RecordDecl *R = new (C, DC) RecordDecl(Record, TK, C, DC, | |||
3967 | StartLoc, IdLoc, Id, PrevDecl); | |||
3968 | R->MayHaveOutOfDateDef = C.getLangOpts().Modules; | |||
3969 | ||||
3970 | C.getTypeDeclType(R, PrevDecl); | |||
3971 | return R; | |||
3972 | } | |||
3973 | ||||
3974 | RecordDecl *RecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) { | |||
3975 | RecordDecl *R = | |||
3976 | new (C, ID) RecordDecl(Record, TTK_Struct, C, nullptr, SourceLocation(), | |||
3977 | SourceLocation(), nullptr, nullptr); | |||
3978 | R->MayHaveOutOfDateDef = C.getLangOpts().Modules; | |||
3979 | return R; | |||
3980 | } | |||
3981 | ||||
3982 | bool RecordDecl::isInjectedClassName() const { | |||
3983 | return isImplicit() && getDeclName() && getDeclContext()->isRecord() && | |||
3984 | cast<RecordDecl>(getDeclContext())->getDeclName() == getDeclName(); | |||
3985 | } | |||
3986 | ||||
3987 | bool RecordDecl::isLambda() const { | |||
3988 | if (auto RD = dyn_cast<CXXRecordDecl>(this)) | |||
3989 | return RD->isLambda(); | |||
3990 | return false; | |||
3991 | } | |||
3992 | ||||
3993 | bool RecordDecl::isCapturedRecord() const { | |||
3994 | return hasAttr<CapturedRecordAttr>(); | |||
3995 | } | |||
3996 | ||||
3997 | void RecordDecl::setCapturedRecord() { | |||
3998 | addAttr(CapturedRecordAttr::CreateImplicit(getASTContext())); | |||
| ||||
3999 | } | |||
4000 | ||||
4001 | RecordDecl::field_iterator RecordDecl::field_begin() const { | |||
4002 | if (hasExternalLexicalStorage() && !LoadedFieldsFromExternalStorage) | |||
4003 | LoadFieldsFromExternalStorage(); | |||
4004 | ||||
4005 | return field_iterator(decl_iterator(FirstDecl)); | |||
4006 | } | |||
4007 | ||||
4008 | /// completeDefinition - Notes that the definition of this type is now | |||
4009 | /// complete. | |||
4010 | void RecordDecl::completeDefinition() { | |||
4011 | assert(!isCompleteDefinition() && "Cannot redefine record!")(static_cast <bool> (!isCompleteDefinition() && "Cannot redefine record!") ? void (0) : __assert_fail ("!isCompleteDefinition() && \"Cannot redefine record!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 4011, __extension__ __PRETTY_FUNCTION__)); | |||
4012 | TagDecl::completeDefinition(); | |||
4013 | } | |||
4014 | ||||
4015 | /// isMsStruct - Get whether or not this record uses ms_struct layout. | |||
4016 | /// This which can be turned on with an attribute, pragma, or the | |||
4017 | /// -mms-bitfields command-line option. | |||
4018 | bool RecordDecl::isMsStruct(const ASTContext &C) const { | |||
4019 | return hasAttr<MSStructAttr>() || C.getLangOpts().MSBitfields == 1; | |||
4020 | } | |||
4021 | ||||
4022 | void RecordDecl::LoadFieldsFromExternalStorage() const { | |||
4023 | ExternalASTSource *Source = getASTContext().getExternalSource(); | |||
4024 | assert(hasExternalLexicalStorage() && Source && "No external storage?")(static_cast <bool> (hasExternalLexicalStorage() && Source && "No external storage?") ? void (0) : __assert_fail ("hasExternalLexicalStorage() && Source && \"No external storage?\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 4024, __extension__ __PRETTY_FUNCTION__)); | |||
4025 | ||||
4026 | // Notify that we have a RecordDecl doing some initialization. | |||
4027 | ExternalASTSource::Deserializing TheFields(Source); | |||
4028 | ||||
4029 | SmallVector<Decl*, 64> Decls; | |||
4030 | LoadedFieldsFromExternalStorage = true; | |||
4031 | Source->FindExternalLexicalDecls(this, [](Decl::Kind K) { | |||
4032 | return FieldDecl::classofKind(K) || IndirectFieldDecl::classofKind(K); | |||
4033 | }, Decls); | |||
4034 | ||||
4035 | #ifndef NDEBUG | |||
4036 | // Check that all decls we got were FieldDecls. | |||
4037 | for (unsigned i=0, e=Decls.size(); i != e; ++i) | |||
4038 | assert(isa<FieldDecl>(Decls[i]) || isa<IndirectFieldDecl>(Decls[i]))(static_cast <bool> (isa<FieldDecl>(Decls[i]) || isa <IndirectFieldDecl>(Decls[i])) ? void (0) : __assert_fail ("isa<FieldDecl>(Decls[i]) || isa<IndirectFieldDecl>(Decls[i])" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 4038, __extension__ __PRETTY_FUNCTION__)); | |||
4039 | #endif | |||
4040 | ||||
4041 | if (Decls.empty()) | |||
4042 | return; | |||
4043 | ||||
4044 | std::tie(FirstDecl, LastDecl) = BuildDeclChain(Decls, | |||
4045 | /*FieldsAlreadyLoaded=*/false); | |||
4046 | } | |||
4047 | ||||
4048 | bool RecordDecl::mayInsertExtraPadding(bool EmitRemark) const { | |||
4049 | ASTContext &Context = getASTContext(); | |||
4050 | const SanitizerMask EnabledAsanMask = Context.getLangOpts().Sanitize.Mask & | |||
4051 | (SanitizerKind::Address | SanitizerKind::KernelAddress); | |||
4052 | if (!EnabledAsanMask || !Context.getLangOpts().SanitizeAddressFieldPadding) | |||
4053 | return false; | |||
4054 | const auto &Blacklist = Context.getSanitizerBlacklist(); | |||
4055 | const auto *CXXRD = dyn_cast<CXXRecordDecl>(this); | |||
4056 | // We may be able to relax some of these requirements. | |||
4057 | int ReasonToReject = -1; | |||
4058 | if (!CXXRD || CXXRD->isExternCContext()) | |||
4059 | ReasonToReject = 0; // is not C++. | |||
4060 | else if (CXXRD->hasAttr<PackedAttr>()) | |||
4061 | ReasonToReject = 1; // is packed. | |||
4062 | else if (CXXRD->isUnion()) | |||
4063 | ReasonToReject = 2; // is a union. | |||
4064 | else if (CXXRD->isTriviallyCopyable()) | |||
4065 | ReasonToReject = 3; // is trivially copyable. | |||
4066 | else if (CXXRD->hasTrivialDestructor()) | |||
4067 | ReasonToReject = 4; // has trivial destructor. | |||
4068 | else if (CXXRD->isStandardLayout()) | |||
4069 | ReasonToReject = 5; // is standard layout. | |||
4070 | else if (Blacklist.isBlacklistedLocation(EnabledAsanMask, getLocation(), | |||
4071 | "field-padding")) | |||
4072 | ReasonToReject = 6; // is in a blacklisted file. | |||
4073 | else if (Blacklist.isBlacklistedType(EnabledAsanMask, | |||
4074 | getQualifiedNameAsString(), | |||
4075 | "field-padding")) | |||
4076 | ReasonToReject = 7; // is blacklisted. | |||
4077 | ||||
4078 | if (EmitRemark) { | |||
4079 | if (ReasonToReject >= 0) | |||
4080 | Context.getDiagnostics().Report( | |||
4081 | getLocation(), | |||
4082 | diag::remark_sanitize_address_insert_extra_padding_rejected) | |||
4083 | << getQualifiedNameAsString() << ReasonToReject; | |||
4084 | else | |||
4085 | Context.getDiagnostics().Report( | |||
4086 | getLocation(), | |||
4087 | diag::remark_sanitize_address_insert_extra_padding_accepted) | |||
4088 | << getQualifiedNameAsString(); | |||
4089 | } | |||
4090 | return ReasonToReject < 0; | |||
4091 | } | |||
4092 | ||||
4093 | const FieldDecl *RecordDecl::findFirstNamedDataMember() const { | |||
4094 | for (const auto *I : fields()) { | |||
4095 | if (I->getIdentifier()) | |||
4096 | return I; | |||
4097 | ||||
4098 | if (const auto *RT = I->getType()->getAs<RecordType>()) | |||
4099 | if (const FieldDecl *NamedDataMember = | |||
4100 | RT->getDecl()->findFirstNamedDataMember()) | |||
4101 | return NamedDataMember; | |||
4102 | } | |||
4103 | ||||
4104 | // We didn't find a named data member. | |||
4105 | return nullptr; | |||
4106 | } | |||
4107 | ||||
4108 | //===----------------------------------------------------------------------===// | |||
4109 | // BlockDecl Implementation | |||
4110 | //===----------------------------------------------------------------------===// | |||
4111 | ||||
4112 | void BlockDecl::setParams(ArrayRef<ParmVarDecl *> NewParamInfo) { | |||
4113 | assert(!ParamInfo && "Already has param info!")(static_cast <bool> (!ParamInfo && "Already has param info!" ) ? void (0) : __assert_fail ("!ParamInfo && \"Already has param info!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 4113, __extension__ __PRETTY_FUNCTION__)); | |||
4114 | ||||
4115 | // Zero params -> null pointer. | |||
4116 | if (!NewParamInfo.empty()) { | |||
4117 | NumParams = NewParamInfo.size(); | |||
4118 | ParamInfo = new (getASTContext()) ParmVarDecl*[NewParamInfo.size()]; | |||
4119 | std::copy(NewParamInfo.begin(), NewParamInfo.end(), ParamInfo); | |||
4120 | } | |||
4121 | } | |||
4122 | ||||
4123 | void BlockDecl::setCaptures(ASTContext &Context, ArrayRef<Capture> Captures, | |||
4124 | bool CapturesCXXThis) { | |||
4125 | this->CapturesCXXThis = CapturesCXXThis; | |||
4126 | this->NumCaptures = Captures.size(); | |||
4127 | ||||
4128 | if (Captures.empty()) { | |||
4129 | this->Captures = nullptr; | |||
4130 | return; | |||
4131 | } | |||
4132 | ||||
4133 | this->Captures = Captures.copy(Context).data(); | |||
4134 | } | |||
4135 | ||||
4136 | bool BlockDecl::capturesVariable(const VarDecl *variable) const { | |||
4137 | for (const auto &I : captures()) | |||
4138 | // Only auto vars can be captured, so no redeclaration worries. | |||
4139 | if (I.getVariable() == variable) | |||
4140 | return true; | |||
4141 | ||||
4142 | return false; | |||
4143 | } | |||
4144 | ||||
4145 | SourceRange BlockDecl::getSourceRange() const { | |||
4146 | return SourceRange(getLocation(), Body? Body->getLocEnd() : getLocation()); | |||
4147 | } | |||
4148 | ||||
4149 | //===----------------------------------------------------------------------===// | |||
4150 | // Other Decl Allocation/Deallocation Method Implementations | |||
4151 | //===----------------------------------------------------------------------===// | |||
4152 | ||||
4153 | void TranslationUnitDecl::anchor() {} | |||
4154 | ||||
4155 | TranslationUnitDecl *TranslationUnitDecl::Create(ASTContext &C) { | |||
4156 | return new (C, (DeclContext *)nullptr) TranslationUnitDecl(C); | |||
4157 | } | |||
4158 | ||||
4159 | void PragmaCommentDecl::anchor() {} | |||
4160 | ||||
4161 | PragmaCommentDecl *PragmaCommentDecl::Create(const ASTContext &C, | |||
4162 | TranslationUnitDecl *DC, | |||
4163 | SourceLocation CommentLoc, | |||
4164 | PragmaMSCommentKind CommentKind, | |||
4165 | StringRef Arg) { | |||
4166 | PragmaCommentDecl *PCD = | |||
4167 | new (C, DC, additionalSizeToAlloc<char>(Arg.size() + 1)) | |||
4168 | PragmaCommentDecl(DC, CommentLoc, CommentKind); | |||
4169 | memcpy(PCD->getTrailingObjects<char>(), Arg.data(), Arg.size()); | |||
4170 | PCD->getTrailingObjects<char>()[Arg.size()] = '\0'; | |||
4171 | return PCD; | |||
4172 | } | |||
4173 | ||||
4174 | PragmaCommentDecl *PragmaCommentDecl::CreateDeserialized(ASTContext &C, | |||
4175 | unsigned ID, | |||
4176 | unsigned ArgSize) { | |||
4177 | return new (C, ID, additionalSizeToAlloc<char>(ArgSize + 1)) | |||
4178 | PragmaCommentDecl(nullptr, SourceLocation(), PCK_Unknown); | |||
4179 | } | |||
4180 | ||||
4181 | void PragmaDetectMismatchDecl::anchor() {} | |||
4182 | ||||
4183 | PragmaDetectMismatchDecl * | |||
4184 | PragmaDetectMismatchDecl::Create(const ASTContext &C, TranslationUnitDecl *DC, | |||
4185 | SourceLocation Loc, StringRef Name, | |||
4186 | StringRef Value) { | |||
4187 | size_t ValueStart = Name.size() + 1; | |||
4188 | PragmaDetectMismatchDecl *PDMD = | |||
4189 | new (C, DC, additionalSizeToAlloc<char>(ValueStart + Value.size() + 1)) | |||
4190 | PragmaDetectMismatchDecl(DC, Loc, ValueStart); | |||
4191 | memcpy(PDMD->getTrailingObjects<char>(), Name.data(), Name.size()); | |||
4192 | PDMD->getTrailingObjects<char>()[Name.size()] = '\0'; | |||
4193 | memcpy(PDMD->getTrailingObjects<char>() + ValueStart, Value.data(), | |||
4194 | Value.size()); | |||
4195 | PDMD->getTrailingObjects<char>()[ValueStart + Value.size()] = '\0'; | |||
4196 | return PDMD; | |||
4197 | } | |||
4198 | ||||
4199 | PragmaDetectMismatchDecl * | |||
4200 | PragmaDetectMismatchDecl::CreateDeserialized(ASTContext &C, unsigned ID, | |||
4201 | unsigned NameValueSize) { | |||
4202 | return new (C, ID, additionalSizeToAlloc<char>(NameValueSize + 1)) | |||
4203 | PragmaDetectMismatchDecl(nullptr, SourceLocation(), 0); | |||
4204 | } | |||
4205 | ||||
4206 | void ExternCContextDecl::anchor() {} | |||
4207 | ||||
4208 | ExternCContextDecl *ExternCContextDecl::Create(const ASTContext &C, | |||
4209 | TranslationUnitDecl *DC) { | |||
4210 | return new (C, DC) ExternCContextDecl(DC); | |||
4211 | } | |||
4212 | ||||
4213 | void LabelDecl::anchor() {} | |||
4214 | ||||
4215 | LabelDecl *LabelDecl::Create(ASTContext &C, DeclContext *DC, | |||
4216 | SourceLocation IdentL, IdentifierInfo *II) { | |||
4217 | return new (C, DC) LabelDecl(DC, IdentL, II, nullptr, IdentL); | |||
4218 | } | |||
4219 | ||||
4220 | LabelDecl *LabelDecl::Create(ASTContext &C, DeclContext *DC, | |||
4221 | SourceLocation IdentL, IdentifierInfo *II, | |||
4222 | SourceLocation GnuLabelL) { | |||
4223 | assert(GnuLabelL != IdentL && "Use this only for GNU local labels")(static_cast <bool> (GnuLabelL != IdentL && "Use this only for GNU local labels" ) ? void (0) : __assert_fail ("GnuLabelL != IdentL && \"Use this only for GNU local labels\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 4223, __extension__ __PRETTY_FUNCTION__)); | |||
4224 | return new (C, DC) LabelDecl(DC, IdentL, II, nullptr, GnuLabelL); | |||
4225 | } | |||
4226 | ||||
4227 | LabelDecl *LabelDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4228 | return new (C, ID) LabelDecl(nullptr, SourceLocation(), nullptr, nullptr, | |||
4229 | SourceLocation()); | |||
4230 | } | |||
4231 | ||||
4232 | void LabelDecl::setMSAsmLabel(StringRef Name) { | |||
4233 | char *Buffer = new (getASTContext(), 1) char[Name.size() + 1]; | |||
4234 | memcpy(Buffer, Name.data(), Name.size()); | |||
4235 | Buffer[Name.size()] = '\0'; | |||
4236 | MSAsmName = Buffer; | |||
4237 | } | |||
4238 | ||||
4239 | void ValueDecl::anchor() {} | |||
4240 | ||||
4241 | bool ValueDecl::isWeak() const { | |||
4242 | for (const auto *I : attrs()) | |||
4243 | if (isa<WeakAttr>(I) || isa<WeakRefAttr>(I)) | |||
4244 | return true; | |||
4245 | ||||
4246 | return isWeakImported(); | |||
4247 | } | |||
4248 | ||||
4249 | void ImplicitParamDecl::anchor() {} | |||
4250 | ||||
4251 | ImplicitParamDecl *ImplicitParamDecl::Create(ASTContext &C, DeclContext *DC, | |||
4252 | SourceLocation IdLoc, | |||
4253 | IdentifierInfo *Id, QualType Type, | |||
4254 | ImplicitParamKind ParamKind) { | |||
4255 | return new (C, DC) ImplicitParamDecl(C, DC, IdLoc, Id, Type, ParamKind); | |||
4256 | } | |||
4257 | ||||
4258 | ImplicitParamDecl *ImplicitParamDecl::Create(ASTContext &C, QualType Type, | |||
4259 | ImplicitParamKind ParamKind) { | |||
4260 | return new (C, nullptr) ImplicitParamDecl(C, Type, ParamKind); | |||
4261 | } | |||
4262 | ||||
4263 | ImplicitParamDecl *ImplicitParamDecl::CreateDeserialized(ASTContext &C, | |||
4264 | unsigned ID) { | |||
4265 | return new (C, ID) ImplicitParamDecl(C, QualType(), ImplicitParamKind::Other); | |||
4266 | } | |||
4267 | ||||
4268 | FunctionDecl *FunctionDecl::Create(ASTContext &C, DeclContext *DC, | |||
4269 | SourceLocation StartLoc, | |||
4270 | const DeclarationNameInfo &NameInfo, | |||
4271 | QualType T, TypeSourceInfo *TInfo, | |||
4272 | StorageClass SC, | |||
4273 | bool isInlineSpecified, | |||
4274 | bool hasWrittenPrototype, | |||
4275 | bool isConstexprSpecified) { | |||
4276 | FunctionDecl *New = | |||
4277 | new (C, DC) FunctionDecl(Function, C, DC, StartLoc, NameInfo, T, TInfo, | |||
4278 | SC, isInlineSpecified, isConstexprSpecified); | |||
4279 | New->HasWrittenPrototype = hasWrittenPrototype; | |||
4280 | return New; | |||
4281 | } | |||
4282 | ||||
4283 | FunctionDecl *FunctionDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4284 | return new (C, ID) FunctionDecl(Function, C, nullptr, SourceLocation(), | |||
4285 | DeclarationNameInfo(), QualType(), nullptr, | |||
4286 | SC_None, false, false); | |||
4287 | } | |||
4288 | ||||
4289 | BlockDecl *BlockDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L) { | |||
4290 | return new (C, DC) BlockDecl(DC, L); | |||
4291 | } | |||
4292 | ||||
4293 | BlockDecl *BlockDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4294 | return new (C, ID) BlockDecl(nullptr, SourceLocation()); | |||
4295 | } | |||
4296 | ||||
4297 | CapturedDecl::CapturedDecl(DeclContext *DC, unsigned NumParams) | |||
4298 | : Decl(Captured, DC, SourceLocation()), DeclContext(Captured), | |||
4299 | NumParams(NumParams), ContextParam(0), BodyAndNothrow(nullptr, false) {} | |||
4300 | ||||
4301 | CapturedDecl *CapturedDecl::Create(ASTContext &C, DeclContext *DC, | |||
4302 | unsigned NumParams) { | |||
4303 | return new (C, DC, additionalSizeToAlloc<ImplicitParamDecl *>(NumParams)) | |||
4304 | CapturedDecl(DC, NumParams); | |||
4305 | } | |||
4306 | ||||
4307 | CapturedDecl *CapturedDecl::CreateDeserialized(ASTContext &C, unsigned ID, | |||
4308 | unsigned NumParams) { | |||
4309 | return new (C, ID, additionalSizeToAlloc<ImplicitParamDecl *>(NumParams)) | |||
4310 | CapturedDecl(nullptr, NumParams); | |||
4311 | } | |||
4312 | ||||
4313 | Stmt *CapturedDecl::getBody() const { return BodyAndNothrow.getPointer(); } | |||
4314 | void CapturedDecl::setBody(Stmt *B) { BodyAndNothrow.setPointer(B); } | |||
4315 | ||||
4316 | bool CapturedDecl::isNothrow() const { return BodyAndNothrow.getInt(); } | |||
4317 | void CapturedDecl::setNothrow(bool Nothrow) { BodyAndNothrow.setInt(Nothrow); } | |||
4318 | ||||
4319 | EnumConstantDecl *EnumConstantDecl::Create(ASTContext &C, EnumDecl *CD, | |||
4320 | SourceLocation L, | |||
4321 | IdentifierInfo *Id, QualType T, | |||
4322 | Expr *E, const llvm::APSInt &V) { | |||
4323 | return new (C, CD) EnumConstantDecl(CD, L, Id, T, E, V); | |||
4324 | } | |||
4325 | ||||
4326 | EnumConstantDecl * | |||
4327 | EnumConstantDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4328 | return new (C, ID) EnumConstantDecl(nullptr, SourceLocation(), nullptr, | |||
4329 | QualType(), nullptr, llvm::APSInt()); | |||
4330 | } | |||
4331 | ||||
4332 | void IndirectFieldDecl::anchor() {} | |||
4333 | ||||
4334 | IndirectFieldDecl::IndirectFieldDecl(ASTContext &C, DeclContext *DC, | |||
4335 | SourceLocation L, DeclarationName N, | |||
4336 | QualType T, | |||
4337 | MutableArrayRef<NamedDecl *> CH) | |||
4338 | : ValueDecl(IndirectField, DC, L, N, T), Chaining(CH.data()), | |||
4339 | ChainingSize(CH.size()) { | |||
4340 | // In C++, indirect field declarations conflict with tag declarations in the | |||
4341 | // same scope, so add them to IDNS_Tag so that tag redeclaration finds them. | |||
4342 | if (C.getLangOpts().CPlusPlus) | |||
4343 | IdentifierNamespace |= IDNS_Tag; | |||
4344 | } | |||
4345 | ||||
4346 | IndirectFieldDecl * | |||
4347 | IndirectFieldDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L, | |||
4348 | IdentifierInfo *Id, QualType T, | |||
4349 | llvm::MutableArrayRef<NamedDecl *> CH) { | |||
4350 | return new (C, DC) IndirectFieldDecl(C, DC, L, Id, T, CH); | |||
4351 | } | |||
4352 | ||||
4353 | IndirectFieldDecl *IndirectFieldDecl::CreateDeserialized(ASTContext &C, | |||
4354 | unsigned ID) { | |||
4355 | return new (C, ID) IndirectFieldDecl(C, nullptr, SourceLocation(), | |||
4356 | DeclarationName(), QualType(), None); | |||
4357 | } | |||
4358 | ||||
4359 | SourceRange EnumConstantDecl::getSourceRange() const { | |||
4360 | SourceLocation End = getLocation(); | |||
4361 | if (Init) | |||
4362 | End = Init->getLocEnd(); | |||
4363 | return SourceRange(getLocation(), End); | |||
4364 | } | |||
4365 | ||||
4366 | void TypeDecl::anchor() {} | |||
4367 | ||||
4368 | TypedefDecl *TypedefDecl::Create(ASTContext &C, DeclContext *DC, | |||
4369 | SourceLocation StartLoc, SourceLocation IdLoc, | |||
4370 | IdentifierInfo *Id, TypeSourceInfo *TInfo) { | |||
4371 | return new (C, DC) TypedefDecl(C, DC, StartLoc, IdLoc, Id, TInfo); | |||
4372 | } | |||
4373 | ||||
4374 | void TypedefNameDecl::anchor() {} | |||
4375 | ||||
4376 | TagDecl *TypedefNameDecl::getAnonDeclWithTypedefName(bool AnyRedecl) const { | |||
4377 | if (auto *TT = getTypeSourceInfo()->getType()->getAs<TagType>()) { | |||
4378 | auto *OwningTypedef = TT->getDecl()->getTypedefNameForAnonDecl(); | |||
4379 | auto *ThisTypedef = this; | |||
4380 | if (AnyRedecl && OwningTypedef) { | |||
4381 | OwningTypedef = OwningTypedef->getCanonicalDecl(); | |||
4382 | ThisTypedef = ThisTypedef->getCanonicalDecl(); | |||
4383 | } | |||
4384 | if (OwningTypedef == ThisTypedef) | |||
4385 | return TT->getDecl(); | |||
4386 | } | |||
4387 | ||||
4388 | return nullptr; | |||
4389 | } | |||
4390 | ||||
4391 | bool TypedefNameDecl::isTransparentTagSlow() const { | |||
4392 | auto determineIsTransparent = [&]() { | |||
4393 | if (auto *TT = getUnderlyingType()->getAs<TagType>()) { | |||
4394 | if (auto *TD = TT->getDecl()) { | |||
4395 | if (TD->getName() != getName()) | |||
4396 | return false; | |||
4397 | SourceLocation TTLoc = getLocation(); | |||
4398 | SourceLocation TDLoc = TD->getLocation(); | |||
4399 | if (!TTLoc.isMacroID() || !TDLoc.isMacroID()) | |||
4400 | return false; | |||
4401 | SourceManager &SM = getASTContext().getSourceManager(); | |||
4402 | return SM.getSpellingLoc(TTLoc) == SM.getSpellingLoc(TDLoc); | |||
4403 | } | |||
4404 | } | |||
4405 | return false; | |||
4406 | }; | |||
4407 | ||||
4408 | bool isTransparent = determineIsTransparent(); | |||
4409 | MaybeModedTInfo.setInt((isTransparent << 1) | 1); | |||
4410 | return isTransparent; | |||
4411 | } | |||
4412 | ||||
4413 | TypedefDecl *TypedefDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4414 | return new (C, ID) TypedefDecl(C, nullptr, SourceLocation(), SourceLocation(), | |||
4415 | nullptr, nullptr); | |||
4416 | } | |||
4417 | ||||
4418 | TypeAliasDecl *TypeAliasDecl::Create(ASTContext &C, DeclContext *DC, | |||
4419 | SourceLocation StartLoc, | |||
4420 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
4421 | TypeSourceInfo *TInfo) { | |||
4422 | return new (C, DC) TypeAliasDecl(C, DC, StartLoc, IdLoc, Id, TInfo); | |||
4423 | } | |||
4424 | ||||
4425 | TypeAliasDecl *TypeAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4426 | return new (C, ID) TypeAliasDecl(C, nullptr, SourceLocation(), | |||
4427 | SourceLocation(), nullptr, nullptr); | |||
4428 | } | |||
4429 | ||||
4430 | SourceRange TypedefDecl::getSourceRange() const { | |||
4431 | SourceLocation RangeEnd = getLocation(); | |||
4432 | if (TypeSourceInfo *TInfo = getTypeSourceInfo()) { | |||
4433 | if (typeIsPostfix(TInfo->getType())) | |||
4434 | RangeEnd = TInfo->getTypeLoc().getSourceRange().getEnd(); | |||
4435 | } | |||
4436 | return SourceRange(getLocStart(), RangeEnd); | |||
4437 | } | |||
4438 | ||||
4439 | SourceRange TypeAliasDecl::getSourceRange() const { | |||
4440 | SourceLocation RangeEnd = getLocStart(); | |||
4441 | if (TypeSourceInfo *TInfo = getTypeSourceInfo()) | |||
4442 | RangeEnd = TInfo->getTypeLoc().getSourceRange().getEnd(); | |||
4443 | return SourceRange(getLocStart(), RangeEnd); | |||
4444 | } | |||
4445 | ||||
4446 | void FileScopeAsmDecl::anchor() {} | |||
4447 | ||||
4448 | FileScopeAsmDecl *FileScopeAsmDecl::Create(ASTContext &C, DeclContext *DC, | |||
4449 | StringLiteral *Str, | |||
4450 | SourceLocation AsmLoc, | |||
4451 | SourceLocation RParenLoc) { | |||
4452 | return new (C, DC) FileScopeAsmDecl(DC, Str, AsmLoc, RParenLoc); | |||
4453 | } | |||
4454 | ||||
4455 | FileScopeAsmDecl *FileScopeAsmDecl::CreateDeserialized(ASTContext &C, | |||
4456 | unsigned ID) { | |||
4457 | return new (C, ID) FileScopeAsmDecl(nullptr, nullptr, SourceLocation(), | |||
4458 | SourceLocation()); | |||
4459 | } | |||
4460 | ||||
4461 | void EmptyDecl::anchor() {} | |||
4462 | ||||
4463 | EmptyDecl *EmptyDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L) { | |||
4464 | return new (C, DC) EmptyDecl(DC, L); | |||
4465 | } | |||
4466 | ||||
4467 | EmptyDecl *EmptyDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4468 | return new (C, ID) EmptyDecl(nullptr, SourceLocation()); | |||
4469 | } | |||
4470 | ||||
4471 | //===----------------------------------------------------------------------===// | |||
4472 | // ImportDecl Implementation | |||
4473 | //===----------------------------------------------------------------------===// | |||
4474 | ||||
4475 | /// \brief Retrieve the number of module identifiers needed to name the given | |||
4476 | /// module. | |||
4477 | static unsigned getNumModuleIdentifiers(Module *Mod) { | |||
4478 | unsigned Result = 1; | |||
4479 | while (Mod->Parent) { | |||
4480 | Mod = Mod->Parent; | |||
4481 | ++Result; | |||
4482 | } | |||
4483 | return Result; | |||
4484 | } | |||
4485 | ||||
4486 | ImportDecl::ImportDecl(DeclContext *DC, SourceLocation StartLoc, | |||
4487 | Module *Imported, | |||
4488 | ArrayRef<SourceLocation> IdentifierLocs) | |||
4489 | : Decl(Import, DC, StartLoc), ImportedAndComplete(Imported, true) { | |||
4490 | assert(getNumModuleIdentifiers(Imported) == IdentifierLocs.size())(static_cast <bool> (getNumModuleIdentifiers(Imported) == IdentifierLocs.size()) ? void (0) : __assert_fail ("getNumModuleIdentifiers(Imported) == IdentifierLocs.size()" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp" , 4490, __extension__ __PRETTY_FUNCTION__)); | |||
4491 | auto *StoredLocs = getTrailingObjects<SourceLocation>(); | |||
4492 | std::uninitialized_copy(IdentifierLocs.begin(), IdentifierLocs.end(), | |||
4493 | StoredLocs); | |||
4494 | } | |||
4495 | ||||
4496 | ImportDecl::ImportDecl(DeclContext *DC, SourceLocation StartLoc, | |||
4497 | Module *Imported, SourceLocation EndLoc) | |||
4498 | : Decl(Import, DC, StartLoc), ImportedAndComplete(Imported, false) { | |||
4499 | *getTrailingObjects<SourceLocation>() = EndLoc; | |||
4500 | } | |||
4501 | ||||
4502 | ImportDecl *ImportDecl::Create(ASTContext &C, DeclContext *DC, | |||
4503 | SourceLocation StartLoc, Module *Imported, | |||
4504 | ArrayRef<SourceLocation> IdentifierLocs) { | |||
4505 | return new (C, DC, | |||
4506 | additionalSizeToAlloc<SourceLocation>(IdentifierLocs.size())) | |||
4507 | ImportDecl(DC, StartLoc, Imported, IdentifierLocs); | |||
4508 | } | |||
4509 | ||||
4510 | ImportDecl *ImportDecl::CreateImplicit(ASTContext &C, DeclContext *DC, | |||
4511 | SourceLocation StartLoc, | |||
4512 | Module *Imported, | |||
4513 | SourceLocation EndLoc) { | |||
4514 | ImportDecl *Import = new (C, DC, additionalSizeToAlloc<SourceLocation>(1)) | |||
4515 | ImportDecl(DC, StartLoc, Imported, EndLoc); | |||
4516 | Import->setImplicit(); | |||
4517 | return Import; | |||
4518 | } | |||
4519 | ||||
4520 | ImportDecl *ImportDecl::CreateDeserialized(ASTContext &C, unsigned ID, | |||
4521 | unsigned NumLocations) { | |||
4522 | return new (C, ID, additionalSizeToAlloc<SourceLocation>(NumLocations)) | |||
4523 | ImportDecl(EmptyShell()); | |||
4524 | } | |||
4525 | ||||
4526 | ArrayRef<SourceLocation> ImportDecl::getIdentifierLocs() const { | |||
4527 | if (!ImportedAndComplete.getInt()) | |||
4528 | return None; | |||
4529 | ||||
4530 | const auto *StoredLocs = getTrailingObjects<SourceLocation>(); | |||
4531 | return llvm::makeArrayRef(StoredLocs, | |||
4532 | getNumModuleIdentifiers(getImportedModule())); | |||
4533 | } | |||
4534 | ||||
4535 | SourceRange ImportDecl::getSourceRange() const { | |||
4536 | if (!ImportedAndComplete.getInt()) | |||
4537 | return SourceRange(getLocation(), *getTrailingObjects<SourceLocation>()); | |||
4538 | ||||
4539 | return SourceRange(getLocation(), getIdentifierLocs().back()); | |||
4540 | } | |||
4541 | ||||
4542 | //===----------------------------------------------------------------------===// | |||
4543 | // ExportDecl Implementation | |||
4544 | //===----------------------------------------------------------------------===// | |||
4545 | ||||
4546 | void ExportDecl::anchor() {} | |||
4547 | ||||
4548 | ExportDecl *ExportDecl::Create(ASTContext &C, DeclContext *DC, | |||
4549 | SourceLocation ExportLoc) { | |||
4550 | return new (C, DC) ExportDecl(DC, ExportLoc); | |||
4551 | } | |||
4552 | ||||
4553 | ExportDecl *ExportDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
4554 | return new (C, ID) ExportDecl(nullptr, SourceLocation()); | |||
4555 | } |
1 | /*===- TableGen'erated file -------------------------------------*- C++ -*-===*\ |
2 | |* *| |
3 | |* Attribute classes' definitions *| |
4 | |* *| |
5 | |* Automatically generated file, do not edit! *| |
6 | |* *| |
7 | \*===----------------------------------------------------------------------===*/ |
8 | |
9 | #ifndef LLVM_CLANG_ATTR_CLASSES_INC |
10 | #define LLVM_CLANG_ATTR_CLASSES_INC |
11 | |
12 | class AMDGPUFlatWorkGroupSizeAttr : public InheritableAttr { |
13 | unsigned min; |
14 | |
15 | unsigned max; |
16 | |
17 | public: |
18 | static AMDGPUFlatWorkGroupSizeAttr *CreateImplicit(ASTContext &Ctx, unsigned Min, unsigned Max, SourceRange Loc = SourceRange()) { |
19 | auto *A = new (Ctx) AMDGPUFlatWorkGroupSizeAttr(Loc, Ctx, Min, Max, 0); |
20 | A->setImplicit(true); |
21 | return A; |
22 | } |
23 | |
24 | AMDGPUFlatWorkGroupSizeAttr(SourceRange R, ASTContext &Ctx |
25 | , unsigned Min |
26 | , unsigned Max |
27 | , unsigned SI |
28 | ) |
29 | : InheritableAttr(attr::AMDGPUFlatWorkGroupSize, R, SI, false, false) |
30 | , min(Min) |
31 | , max(Max) |
32 | { |
33 | } |
34 | |
35 | AMDGPUFlatWorkGroupSizeAttr *clone(ASTContext &C) const; |
36 | void printPretty(raw_ostream &OS, |
37 | const PrintingPolicy &Policy) const; |
38 | const char *getSpelling() const; |
39 | unsigned getMin() const { |
40 | return min; |
41 | } |
42 | |
43 | unsigned getMax() const { |
44 | return max; |
45 | } |
46 | |
47 | |
48 | |
49 | static bool classof(const Attr *A) { return A->getKind() == attr::AMDGPUFlatWorkGroupSize; } |
50 | }; |
51 | |
52 | class AMDGPUNumSGPRAttr : public InheritableAttr { |
53 | unsigned numSGPR; |
54 | |
55 | public: |
56 | static AMDGPUNumSGPRAttr *CreateImplicit(ASTContext &Ctx, unsigned NumSGPR, SourceRange Loc = SourceRange()) { |
57 | auto *A = new (Ctx) AMDGPUNumSGPRAttr(Loc, Ctx, NumSGPR, 0); |
58 | A->setImplicit(true); |
59 | return A; |
60 | } |
61 | |
62 | AMDGPUNumSGPRAttr(SourceRange R, ASTContext &Ctx |
63 | , unsigned NumSGPR |
64 | , unsigned SI |
65 | ) |
66 | : InheritableAttr(attr::AMDGPUNumSGPR, R, SI, false, false) |
67 | , numSGPR(NumSGPR) |
68 | { |
69 | } |
70 | |
71 | AMDGPUNumSGPRAttr *clone(ASTContext &C) const; |
72 | void printPretty(raw_ostream &OS, |
73 | const PrintingPolicy &Policy) const; |
74 | const char *getSpelling() const; |
75 | unsigned getNumSGPR() const { |
76 | return numSGPR; |
77 | } |
78 | |
79 | |
80 | |
81 | static bool classof(const Attr *A) { return A->getKind() == attr::AMDGPUNumSGPR; } |
82 | }; |
83 | |
84 | class AMDGPUNumVGPRAttr : public InheritableAttr { |
85 | unsigned numVGPR; |
86 | |
87 | public: |
88 | static AMDGPUNumVGPRAttr *CreateImplicit(ASTContext &Ctx, unsigned NumVGPR, SourceRange Loc = SourceRange()) { |
89 | auto *A = new (Ctx) AMDGPUNumVGPRAttr(Loc, Ctx, NumVGPR, 0); |
90 | A->setImplicit(true); |
91 | return A; |
92 | } |
93 | |
94 | AMDGPUNumVGPRAttr(SourceRange R, ASTContext &Ctx |
95 | , unsigned NumVGPR |
96 | , unsigned SI |
97 | ) |
98 | : InheritableAttr(attr::AMDGPUNumVGPR, R, SI, false, false) |
99 | , numVGPR(NumVGPR) |
100 | { |
101 | } |
102 | |
103 | AMDGPUNumVGPRAttr *clone(ASTContext &C) const; |
104 | void printPretty(raw_ostream &OS, |
105 | const PrintingPolicy &Policy) const; |
106 | const char *getSpelling() const; |
107 | unsigned getNumVGPR() const { |
108 | return numVGPR; |
109 | } |
110 | |
111 | |
112 | |
113 | static bool classof(const Attr *A) { return A->getKind() == attr::AMDGPUNumVGPR; } |
114 | }; |
115 | |
116 | class AMDGPUWavesPerEUAttr : public InheritableAttr { |
117 | unsigned min; |
118 | |
119 | unsigned max; |
120 | |
121 | public: |
122 | static AMDGPUWavesPerEUAttr *CreateImplicit(ASTContext &Ctx, unsigned Min, unsigned Max, SourceRange Loc = SourceRange()) { |
123 | auto *A = new (Ctx) AMDGPUWavesPerEUAttr(Loc, Ctx, Min, Max, 0); |
124 | A->setImplicit(true); |
125 | return A; |
126 | } |
127 | |
128 | AMDGPUWavesPerEUAttr(SourceRange R, ASTContext &Ctx |
129 | , unsigned Min |
130 | , unsigned Max |
131 | , unsigned SI |
132 | ) |
133 | : InheritableAttr(attr::AMDGPUWavesPerEU, R, SI, false, false) |
134 | , min(Min) |
135 | , max(Max) |
136 | { |
137 | } |
138 | |
139 | AMDGPUWavesPerEUAttr(SourceRange R, ASTContext &Ctx |
140 | , unsigned Min |
141 | , unsigned SI |
142 | ) |
143 | : InheritableAttr(attr::AMDGPUWavesPerEU, R, SI, false, false) |
144 | , min(Min) |
145 | , max() |
146 | { |
147 | } |
148 | |
149 | AMDGPUWavesPerEUAttr *clone(ASTContext &C) const; |
150 | void printPretty(raw_ostream &OS, |
151 | const PrintingPolicy &Policy) const; |
152 | const char *getSpelling() const; |
153 | unsigned getMin() const { |
154 | return min; |
155 | } |
156 | |
157 | unsigned getMax() const { |
158 | return max; |
159 | } |
160 | |
161 | |
162 | |
163 | static bool classof(const Attr *A) { return A->getKind() == attr::AMDGPUWavesPerEU; } |
164 | }; |
165 | |
166 | class ARMInterruptAttr : public InheritableAttr { |
167 | public: |
168 | enum InterruptType { |
169 | IRQ, |
170 | FIQ, |
171 | SWI, |
172 | ABORT, |
173 | UNDEF, |
174 | Generic |
175 | }; |
176 | private: |
177 | InterruptType interrupt; |
178 | |
179 | public: |
180 | static ARMInterruptAttr *CreateImplicit(ASTContext &Ctx, InterruptType Interrupt, SourceRange Loc = SourceRange()) { |
181 | auto *A = new (Ctx) ARMInterruptAttr(Loc, Ctx, Interrupt, 0); |
182 | A->setImplicit(true); |
183 | return A; |
184 | } |
185 | |
186 | ARMInterruptAttr(SourceRange R, ASTContext &Ctx |
187 | , InterruptType Interrupt |
188 | , unsigned SI |
189 | ) |
190 | : InheritableAttr(attr::ARMInterrupt, R, SI, false, false) |
191 | , interrupt(Interrupt) |
192 | { |
193 | } |
194 | |
195 | ARMInterruptAttr(SourceRange R, ASTContext &Ctx |
196 | , unsigned SI |
197 | ) |
198 | : InheritableAttr(attr::ARMInterrupt, R, SI, false, false) |
199 | , interrupt(InterruptType(0)) |
200 | { |
201 | } |
202 | |
203 | ARMInterruptAttr *clone(ASTContext &C) const; |
204 | void printPretty(raw_ostream &OS, |
205 | const PrintingPolicy &Policy) const; |
206 | const char *getSpelling() const; |
207 | InterruptType getInterrupt() const { |
208 | return interrupt; |
209 | } |
210 | |
211 | static bool ConvertStrToInterruptType(StringRef Val, InterruptType &Out) { |
212 | Optional<InterruptType> R = llvm::StringSwitch<Optional<InterruptType>>(Val) |
213 | .Case("IRQ", ARMInterruptAttr::IRQ) |
214 | .Case("FIQ", ARMInterruptAttr::FIQ) |
215 | .Case("SWI", ARMInterruptAttr::SWI) |
216 | .Case("ABORT", ARMInterruptAttr::ABORT) |
217 | .Case("UNDEF", ARMInterruptAttr::UNDEF) |
218 | .Case("", ARMInterruptAttr::Generic) |
219 | .Default(Optional<InterruptType>()); |
220 | if (R) { |
221 | Out = *R; |
222 | return true; |
223 | } |
224 | return false; |
225 | } |
226 | |
227 | static const char *ConvertInterruptTypeToStr(InterruptType Val) { |
228 | switch(Val) { |
229 | case ARMInterruptAttr::IRQ: return "IRQ"; |
230 | case ARMInterruptAttr::FIQ: return "FIQ"; |
231 | case ARMInterruptAttr::SWI: return "SWI"; |
232 | case ARMInterruptAttr::ABORT: return "ABORT"; |
233 | case ARMInterruptAttr::UNDEF: return "UNDEF"; |
234 | case ARMInterruptAttr::Generic: return ""; |
235 | } |
236 | llvm_unreachable("No enumerator with that value")::llvm::llvm_unreachable_internal("No enumerator with that value" , "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 236); |
237 | } |
238 | |
239 | |
240 | static bool classof(const Attr *A) { return A->getKind() == attr::ARMInterrupt; } |
241 | }; |
242 | |
243 | class AVRInterruptAttr : public InheritableAttr { |
244 | public: |
245 | static AVRInterruptAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
246 | auto *A = new (Ctx) AVRInterruptAttr(Loc, Ctx, 0); |
247 | A->setImplicit(true); |
248 | return A; |
249 | } |
250 | |
251 | AVRInterruptAttr(SourceRange R, ASTContext &Ctx |
252 | , unsigned SI |
253 | ) |
254 | : InheritableAttr(attr::AVRInterrupt, R, SI, false, false) |
255 | { |
256 | } |
257 | |
258 | AVRInterruptAttr *clone(ASTContext &C) const; |
259 | void printPretty(raw_ostream &OS, |
260 | const PrintingPolicy &Policy) const; |
261 | const char *getSpelling() const; |
262 | |
263 | |
264 | static bool classof(const Attr *A) { return A->getKind() == attr::AVRInterrupt; } |
265 | }; |
266 | |
267 | class AVRSignalAttr : public InheritableAttr { |
268 | public: |
269 | static AVRSignalAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
270 | auto *A = new (Ctx) AVRSignalAttr(Loc, Ctx, 0); |
271 | A->setImplicit(true); |
272 | return A; |
273 | } |
274 | |
275 | AVRSignalAttr(SourceRange R, ASTContext &Ctx |
276 | , unsigned SI |
277 | ) |
278 | : InheritableAttr(attr::AVRSignal, R, SI, false, false) |
279 | { |
280 | } |
281 | |
282 | AVRSignalAttr *clone(ASTContext &C) const; |
283 | void printPretty(raw_ostream &OS, |
284 | const PrintingPolicy &Policy) const; |
285 | const char *getSpelling() const; |
286 | |
287 | |
288 | static bool classof(const Attr *A) { return A->getKind() == attr::AVRSignal; } |
289 | }; |
290 | |
291 | class AbiTagAttr : public Attr { |
292 | unsigned tags_Size; |
293 | StringRef *tags_; |
294 | |
295 | public: |
296 | static AbiTagAttr *CreateImplicit(ASTContext &Ctx, StringRef *Tags, unsigned TagsSize, SourceRange Loc = SourceRange()) { |
297 | auto *A = new (Ctx) AbiTagAttr(Loc, Ctx, Tags, TagsSize, 0); |
298 | A->setImplicit(true); |
299 | return A; |
300 | } |
301 | |
302 | AbiTagAttr(SourceRange R, ASTContext &Ctx |
303 | , StringRef *Tags, unsigned TagsSize |
304 | , unsigned SI |
305 | ) |
306 | : Attr(attr::AbiTag, R, SI, false) |
307 | , tags_Size(TagsSize), tags_(new (Ctx, 16) StringRef[tags_Size]) |
308 | { |
309 | for (size_t I = 0, E = tags_Size; I != E; |
310 | ++I) { |
311 | StringRef Ref = Tags[I]; |
312 | if (!Ref.empty()) { |
313 | char *Mem = new (Ctx, 1) char[Ref.size()]; |
314 | std::memcpy(Mem, Ref.data(), Ref.size()); |
315 | tags_[I] = StringRef(Mem, Ref.size()); |
316 | } |
317 | } |
318 | } |
319 | |
320 | AbiTagAttr(SourceRange R, ASTContext &Ctx |
321 | , unsigned SI |
322 | ) |
323 | : Attr(attr::AbiTag, R, SI, false) |
324 | , tags_Size(0), tags_(nullptr) |
325 | { |
326 | } |
327 | |
328 | AbiTagAttr *clone(ASTContext &C) const; |
329 | void printPretty(raw_ostream &OS, |
330 | const PrintingPolicy &Policy) const; |
331 | const char *getSpelling() const; |
332 | typedef StringRef* tags_iterator; |
333 | tags_iterator tags_begin() const { return tags_; } |
334 | tags_iterator tags_end() const { return tags_ + tags_Size; } |
335 | unsigned tags_size() const { return tags_Size; } |
336 | llvm::iterator_range<tags_iterator> tags() const { return llvm::make_range(tags_begin(), tags_end()); } |
337 | |
338 | |
339 | |
340 | |
341 | static bool classof(const Attr *A) { return A->getKind() == attr::AbiTag; } |
342 | }; |
343 | |
344 | class AcquireCapabilityAttr : public InheritableAttr { |
345 | unsigned args_Size; |
346 | Expr * *args_; |
347 | |
348 | public: |
349 | enum Spelling { |
350 | GNU_acquire_capability = 0, |
351 | CXX11_clang_acquire_capability = 1, |
352 | GNU_acquire_shared_capability = 2, |
353 | CXX11_clang_acquire_shared_capability = 3, |
354 | GNU_exclusive_lock_function = 4, |
355 | GNU_shared_lock_function = 5 |
356 | }; |
357 | |
358 | static AcquireCapabilityAttr *CreateImplicit(ASTContext &Ctx, Spelling S, Expr * *Args, unsigned ArgsSize, SourceRange Loc = SourceRange()) { |
359 | auto *A = new (Ctx) AcquireCapabilityAttr(Loc, Ctx, Args, ArgsSize, S); |
360 | A->setImplicit(true); |
361 | return A; |
362 | } |
363 | |
364 | AcquireCapabilityAttr(SourceRange R, ASTContext &Ctx |
365 | , Expr * *Args, unsigned ArgsSize |
366 | , unsigned SI |
367 | ) |
368 | : InheritableAttr(attr::AcquireCapability, R, SI, true, true) |
369 | , args_Size(ArgsSize), args_(new (Ctx, 16) Expr *[args_Size]) |
370 | { |
371 | std::copy(Args, Args + args_Size, args_); |
372 | } |
373 | |
374 | AcquireCapabilityAttr(SourceRange R, ASTContext &Ctx |
375 | , unsigned SI |
376 | ) |
377 | : InheritableAttr(attr::AcquireCapability, R, SI, true, true) |
378 | , args_Size(0), args_(nullptr) |
379 | { |
380 | } |
381 | |
382 | AcquireCapabilityAttr *clone(ASTContext &C) const; |
383 | void printPretty(raw_ostream &OS, |
384 | const PrintingPolicy &Policy) const; |
385 | const char *getSpelling() const; |
386 | Spelling getSemanticSpelling() const { |
387 | switch (SpellingListIndex) { |
388 | default: llvm_unreachable("Unknown spelling list index")::llvm::llvm_unreachable_internal("Unknown spelling list index" , "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 388); |
389 | case 0: return GNU_acquire_capability; |
390 | case 1: return CXX11_clang_acquire_capability; |
391 | case 2: return GNU_acquire_shared_capability; |
392 | case 3: return CXX11_clang_acquire_shared_capability; |
393 | case 4: return GNU_exclusive_lock_function; |
394 | case 5: return GNU_shared_lock_function; |
395 | } |
396 | } |
397 | bool isShared() const { return SpellingListIndex == 2 || |
398 | SpellingListIndex == 3 || |
399 | SpellingListIndex == 5; } |
400 | typedef Expr ** args_iterator; |
401 | args_iterator args_begin() const { return args_; } |
402 | args_iterator args_end() const { return args_ + args_Size; } |
403 | unsigned args_size() const { return args_Size; } |
404 | llvm::iterator_range<args_iterator> args() const { return llvm::make_range(args_begin(), args_end()); } |
405 | |
406 | |
407 | |
408 | |
409 | static bool classof(const Attr *A) { return A->getKind() == attr::AcquireCapability; } |
410 | }; |
411 | |
412 | class AcquiredAfterAttr : public InheritableAttr { |
413 | unsigned args_Size; |
414 | Expr * *args_; |
415 | |
416 | public: |
417 | static AcquiredAfterAttr *CreateImplicit(ASTContext &Ctx, Expr * *Args, unsigned ArgsSize, SourceRange Loc = SourceRange()) { |
418 | auto *A = new (Ctx) AcquiredAfterAttr(Loc, Ctx, Args, ArgsSize, 0); |
419 | A->setImplicit(true); |
420 | return A; |
421 | } |
422 | |
423 | AcquiredAfterAttr(SourceRange R, ASTContext &Ctx |
424 | , Expr * *Args, unsigned ArgsSize |
425 | , unsigned SI |
426 | ) |
427 | : InheritableAttr(attr::AcquiredAfter, R, SI, true, true) |
428 | , args_Size(ArgsSize), args_(new (Ctx, 16) Expr *[args_Size]) |
429 | { |
430 | std::copy(Args, Args + args_Size, args_); |
431 | } |
432 | |
433 | AcquiredAfterAttr(SourceRange R, ASTContext &Ctx |
434 | , unsigned SI |
435 | ) |
436 | : InheritableAttr(attr::AcquiredAfter, R, SI, true, true) |
437 | , args_Size(0), args_(nullptr) |
438 | { |
439 | } |
440 | |
441 | AcquiredAfterAttr *clone(ASTContext &C) const; |
442 | void printPretty(raw_ostream &OS, |
443 | const PrintingPolicy &Policy) const; |
444 | const char *getSpelling() const; |
445 | typedef Expr ** args_iterator; |
446 | args_iterator args_begin() const { return args_; } |
447 | args_iterator args_end() const { return args_ + args_Size; } |
448 | unsigned args_size() const { return args_Size; } |
449 | llvm::iterator_range<args_iterator> args() const { return llvm::make_range(args_begin(), args_end()); } |
450 | |
451 | |
452 | |
453 | |
454 | static bool classof(const Attr *A) { return A->getKind() == attr::AcquiredAfter; } |
455 | }; |
456 | |
457 | class AcquiredBeforeAttr : public InheritableAttr { |
458 | unsigned args_Size; |
459 | Expr * *args_; |
460 | |
461 | public: |
462 | static AcquiredBeforeAttr *CreateImplicit(ASTContext &Ctx, Expr * *Args, unsigned ArgsSize, SourceRange Loc = SourceRange()) { |
463 | auto *A = new (Ctx) AcquiredBeforeAttr(Loc, Ctx, Args, ArgsSize, 0); |
464 | A->setImplicit(true); |
465 | return A; |
466 | } |
467 | |
468 | AcquiredBeforeAttr(SourceRange R, ASTContext &Ctx |
469 | , Expr * *Args, unsigned ArgsSize |
470 | , unsigned SI |
471 | ) |
472 | : InheritableAttr(attr::AcquiredBefore, R, SI, true, true) |
473 | , args_Size(ArgsSize), args_(new (Ctx, 16) Expr *[args_Size]) |
474 | { |
475 | std::copy(Args, Args + args_Size, args_); |
476 | } |
477 | |
478 | AcquiredBeforeAttr(SourceRange R, ASTContext &Ctx |
479 | , unsigned SI |
480 | ) |
481 | : InheritableAttr(attr::AcquiredBefore, R, SI, true, true) |
482 | , args_Size(0), args_(nullptr) |
483 | { |
484 | } |
485 | |
486 | AcquiredBeforeAttr *clone(ASTContext &C) const; |
487 | void printPretty(raw_ostream &OS, |
488 | const PrintingPolicy &Policy) const; |
489 | const char *getSpelling() const; |
490 | typedef Expr ** args_iterator; |
491 | args_iterator args_begin() const { return args_; } |
492 | args_iterator args_end() const { return args_ + args_Size; } |
493 | unsigned args_size() const { return args_Size; } |
494 | llvm::iterator_range<args_iterator> args() const { return llvm::make_range(args_begin(), args_end()); } |
495 | |
496 | |
497 | |
498 | |
499 | static bool classof(const Attr *A) { return A->getKind() == attr::AcquiredBefore; } |
500 | }; |
501 | |
502 | class AliasAttr : public Attr { |
503 | unsigned aliaseeLength; |
504 | char *aliasee; |
505 | |
506 | public: |
507 | static AliasAttr *CreateImplicit(ASTContext &Ctx, llvm::StringRef Aliasee, SourceRange Loc = SourceRange()) { |
508 | auto *A = new (Ctx) AliasAttr(Loc, Ctx, Aliasee, 0); |
509 | A->setImplicit(true); |
510 | return A; |
511 | } |
512 | |
513 | AliasAttr(SourceRange R, ASTContext &Ctx |
514 | , llvm::StringRef Aliasee |
515 | , unsigned SI |
516 | ) |
517 | : Attr(attr::Alias, R, SI, false) |
518 | , aliaseeLength(Aliasee.size()),aliasee(new (Ctx, 1) char[aliaseeLength]) |
519 | { |
520 | if (!Aliasee.empty()) |
521 | std::memcpy(aliasee, Aliasee.data(), aliaseeLength); |
522 | } |
523 | |
524 | AliasAttr *clone(ASTContext &C) const; |
525 | void printPretty(raw_ostream &OS, |
526 | const PrintingPolicy &Policy) const; |
527 | const char *getSpelling() const; |
528 | llvm::StringRef getAliasee() const { |
529 | return llvm::StringRef(aliasee, aliaseeLength); |
530 | } |
531 | unsigned getAliaseeLength() const { |
532 | return aliaseeLength; |
533 | } |
534 | void setAliasee(ASTContext &C, llvm::StringRef S) { |
535 | aliaseeLength = S.size(); |
536 | this->aliasee = new (C, 1) char [aliaseeLength]; |
537 | if (!S.empty()) |
538 | std::memcpy(this->aliasee, S.data(), aliaseeLength); |
539 | } |
540 | |
541 | |
542 | |
543 | static bool classof(const Attr *A) { return A->getKind() == attr::Alias; } |
544 | }; |
545 | |
546 | class AlignMac68kAttr : public InheritableAttr { |
547 | public: |
548 | static AlignMac68kAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
549 | auto *A = new (Ctx) AlignMac68kAttr(Loc, Ctx, 0); |
550 | A->setImplicit(true); |
551 | return A; |
552 | } |
553 | |
554 | AlignMac68kAttr(SourceRange R, ASTContext &Ctx |
555 | , unsigned SI |
556 | ) |
557 | : InheritableAttr(attr::AlignMac68k, R, SI, false, false) |
558 | { |
559 | } |
560 | |
561 | AlignMac68kAttr *clone(ASTContext &C) const; |
562 | void printPretty(raw_ostream &OS, |
563 | const PrintingPolicy &Policy) const; |
564 | const char *getSpelling() const; |
565 | |
566 | |
567 | static bool classof(const Attr *A) { return A->getKind() == attr::AlignMac68k; } |
568 | }; |
569 | |
570 | class AlignValueAttr : public Attr { |
571 | Expr * alignment; |
572 | |
573 | public: |
574 | static AlignValueAttr *CreateImplicit(ASTContext &Ctx, Expr * Alignment, SourceRange Loc = SourceRange()) { |
575 | auto *A = new (Ctx) AlignValueAttr(Loc, Ctx, Alignment, 0); |
576 | A->setImplicit(true); |
577 | return A; |
578 | } |
579 | |
580 | AlignValueAttr(SourceRange R, ASTContext &Ctx |
581 | , Expr * Alignment |
582 | , unsigned SI |
583 | ) |
584 | : Attr(attr::AlignValue, R, SI, false) |
585 | , alignment(Alignment) |
586 | { |
587 | } |
588 | |
589 | AlignValueAttr *clone(ASTContext &C) const; |
590 | void printPretty(raw_ostream &OS, |
591 | const PrintingPolicy &Policy) const; |
592 | const char *getSpelling() const; |
593 | Expr * getAlignment() const { |
594 | return alignment; |
595 | } |
596 | |
597 | |
598 | |
599 | static bool classof(const Attr *A) { return A->getKind() == attr::AlignValue; } |
600 | }; |
601 | |
602 | class AlignedAttr : public InheritableAttr { |
603 | bool isalignmentExpr; |
604 | union { |
605 | Expr *alignmentExpr; |
606 | TypeSourceInfo *alignmentType; |
607 | }; |
608 | |
609 | public: |
610 | enum Spelling { |
611 | GNU_aligned = 0, |
612 | CXX11_gnu_aligned = 1, |
613 | Declspec_align = 2, |
614 | Keyword_alignas = 3, |
615 | Keyword_Alignas = 4 |
616 | }; |
617 | |
618 | static AlignedAttr *CreateImplicit(ASTContext &Ctx, Spelling S, bool IsAlignmentExpr, void *Alignment, SourceRange Loc = SourceRange()) { |
619 | auto *A = new (Ctx) AlignedAttr(Loc, Ctx, IsAlignmentExpr, Alignment, S); |
620 | A->setImplicit(true); |
621 | return A; |
622 | } |
623 | |
624 | AlignedAttr(SourceRange R, ASTContext &Ctx |
625 | , bool IsAlignmentExpr, void *Alignment |
626 | , unsigned SI |
627 | ) |
628 | : InheritableAttr(attr::Aligned, R, SI, false, false) |
629 | , isalignmentExpr(IsAlignmentExpr) |
630 | { |
631 | if (isalignmentExpr) |
632 | alignmentExpr = reinterpret_cast<Expr *>(Alignment); |
633 | else |
634 | alignmentType = reinterpret_cast<TypeSourceInfo *>(Alignment); |
635 | } |
636 | |
637 | AlignedAttr(SourceRange R, ASTContext &Ctx |
638 | , unsigned SI |
639 | ) |
640 | : InheritableAttr(attr::Aligned, R, SI, false, false) |
641 | , isalignmentExpr(false) |
642 | { |
643 | } |
644 | |
645 | AlignedAttr *clone(ASTContext &C) const; |
646 | void printPretty(raw_ostream &OS, |
647 | const PrintingPolicy &Policy) const; |
648 | const char *getSpelling() const; |
649 | Spelling getSemanticSpelling() const { |
650 | switch (SpellingListIndex) { |
651 | default: llvm_unreachable("Unknown spelling list index")::llvm::llvm_unreachable_internal("Unknown spelling list index" , "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 651); |
652 | case 0: return GNU_aligned; |
653 | case 1: return CXX11_gnu_aligned; |
654 | case 2: return Declspec_align; |
655 | case 3: return Keyword_alignas; |
656 | case 4: return Keyword_Alignas; |
657 | } |
658 | } |
659 | bool isGNU() const { return SpellingListIndex == 0 || |
660 | SpellingListIndex == 1; } |
661 | bool isC11() const { return SpellingListIndex == 4; } |
662 | bool isAlignas() const { return SpellingListIndex == 3 || |
663 | SpellingListIndex == 4; } |
664 | bool isDeclspec() const { return SpellingListIndex == 2; } |
665 | bool isAlignmentDependent() const; |
666 | unsigned getAlignment(ASTContext &Ctx) const; |
667 | bool isAlignmentExpr() const { |
668 | return isalignmentExpr; |
669 | } |
670 | Expr *getAlignmentExpr() const { |
671 | assert(isalignmentExpr)(static_cast <bool> (isalignmentExpr) ? void (0) : __assert_fail ("isalignmentExpr", "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 671, __extension__ __PRETTY_FUNCTION__)); |
672 | return alignmentExpr; |
673 | } |
674 | TypeSourceInfo *getAlignmentType() const { |
675 | assert(!isalignmentExpr)(static_cast <bool> (!isalignmentExpr) ? void (0) : __assert_fail ("!isalignmentExpr", "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 675, __extension__ __PRETTY_FUNCTION__)); |
676 | return alignmentType; |
677 | } |
678 | |
679 | |
680 | |
681 | static bool classof(const Attr *A) { return A->getKind() == attr::Aligned; } |
682 | }; |
683 | |
684 | class AllocAlignAttr : public InheritableAttr { |
685 | ParamIdx paramIndex; |
686 | |
687 | public: |
688 | static AllocAlignAttr *CreateImplicit(ASTContext &Ctx, ParamIdx ParamIndex, SourceRange Loc = SourceRange()) { |
689 | auto *A = new (Ctx) AllocAlignAttr(Loc, Ctx, ParamIndex, 0); |
690 | A->setImplicit(true); |
691 | return A; |
692 | } |
693 | |
694 | AllocAlignAttr(SourceRange R, ASTContext &Ctx |
695 | , ParamIdx ParamIndex |
696 | , unsigned SI |
697 | ) |
698 | : InheritableAttr(attr::AllocAlign, R, SI, false, false) |
699 | , paramIndex(ParamIndex) |
700 | { |
701 | } |
702 | |
703 | AllocAlignAttr *clone(ASTContext &C) const; |
704 | void printPretty(raw_ostream &OS, |
705 | const PrintingPolicy &Policy) const; |
706 | const char *getSpelling() const; |
707 | ParamIdx getParamIndex() const { |
708 | return paramIndex; |
709 | } |
710 | |
711 | |
712 | |
713 | static bool classof(const Attr *A) { return A->getKind() == attr::AllocAlign; } |
714 | }; |
715 | |
716 | class AllocSizeAttr : public InheritableAttr { |
717 | ParamIdx elemSizeParam; |
718 | |
719 | ParamIdx numElemsParam; |
720 | |
721 | public: |
722 | static AllocSizeAttr *CreateImplicit(ASTContext &Ctx, ParamIdx ElemSizeParam, ParamIdx NumElemsParam, SourceRange Loc = SourceRange()) { |
723 | auto *A = new (Ctx) AllocSizeAttr(Loc, Ctx, ElemSizeParam, NumElemsParam, 0); |
724 | A->setImplicit(true); |
725 | return A; |
726 | } |
727 | |
728 | AllocSizeAttr(SourceRange R, ASTContext &Ctx |
729 | , ParamIdx ElemSizeParam |
730 | , ParamIdx NumElemsParam |
731 | , unsigned SI |
732 | ) |
733 | : InheritableAttr(attr::AllocSize, R, SI, false, false) |
734 | , elemSizeParam(ElemSizeParam) |
735 | , numElemsParam(NumElemsParam) |
736 | { |
737 | } |
738 | |
739 | AllocSizeAttr(SourceRange R, ASTContext &Ctx |
740 | , ParamIdx ElemSizeParam |
741 | , unsigned SI |
742 | ) |
743 | : InheritableAttr(attr::AllocSize, R, SI, false, false) |
744 | , elemSizeParam(ElemSizeParam) |
745 | , numElemsParam() |
746 | { |
747 | } |
748 | |
749 | AllocSizeAttr *clone(ASTContext &C) const; |
750 | void printPretty(raw_ostream &OS, |
751 | const PrintingPolicy &Policy) const; |
752 | const char *getSpelling() const; |
753 | ParamIdx getElemSizeParam() const { |
754 | return elemSizeParam; |
755 | } |
756 | |
757 | ParamIdx getNumElemsParam() const { |
758 | return numElemsParam; |
759 | } |
760 | |
761 | |
762 | |
763 | static bool classof(const Attr *A) { return A->getKind() == attr::AllocSize; } |
764 | }; |
765 | |
766 | class AlwaysInlineAttr : public InheritableAttr { |
767 | public: |
768 | enum Spelling { |
769 | GNU_always_inline = 0, |
770 | CXX11_gnu_always_inline = 1, |
771 | Keyword_forceinline = 2 |
772 | }; |
773 | |
774 | static AlwaysInlineAttr *CreateImplicit(ASTContext &Ctx, Spelling S, SourceRange Loc = SourceRange()) { |
775 | auto *A = new (Ctx) AlwaysInlineAttr(Loc, Ctx, S); |
776 | A->setImplicit(true); |
777 | return A; |
778 | } |
779 | |
780 | AlwaysInlineAttr(SourceRange R, ASTContext &Ctx |
781 | , unsigned SI |
782 | ) |
783 | : InheritableAttr(attr::AlwaysInline, R, SI, false, false) |
784 | { |
785 | } |
786 | |
787 | AlwaysInlineAttr *clone(ASTContext &C) const; |
788 | void printPretty(raw_ostream &OS, |
789 | const PrintingPolicy &Policy) const; |
790 | const char *getSpelling() const; |
791 | Spelling getSemanticSpelling() const { |
792 | switch (SpellingListIndex) { |
793 | default: llvm_unreachable("Unknown spelling list index")::llvm::llvm_unreachable_internal("Unknown spelling list index" , "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 793); |
794 | case 0: return GNU_always_inline; |
795 | case 1: return CXX11_gnu_always_inline; |
796 | case 2: return Keyword_forceinline; |
797 | } |
798 | } |
799 | |
800 | |
801 | static bool classof(const Attr *A) { return A->getKind() == attr::AlwaysInline; } |
802 | }; |
803 | |
804 | class AnalyzerNoReturnAttr : public InheritableAttr { |
805 | public: |
806 | static AnalyzerNoReturnAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
807 | auto *A = new (Ctx) AnalyzerNoReturnAttr(Loc, Ctx, 0); |
808 | A->setImplicit(true); |
809 | return A; |
810 | } |
811 | |
812 | AnalyzerNoReturnAttr(SourceRange R, ASTContext &Ctx |
813 | , unsigned SI |
814 | ) |
815 | : InheritableAttr(attr::AnalyzerNoReturn, R, SI, false, false) |
816 | { |
817 | } |
818 | |
819 | AnalyzerNoReturnAttr *clone(ASTContext &C) const; |
820 | void printPretty(raw_ostream &OS, |
821 | const PrintingPolicy &Policy) const; |
822 | const char *getSpelling() const; |
823 | |
824 | |
825 | static bool classof(const Attr *A) { return A->getKind() == attr::AnalyzerNoReturn; } |
826 | }; |
827 | |
828 | class AnnotateAttr : public InheritableParamAttr { |
829 | unsigned annotationLength; |
830 | char *annotation; |
831 | |
832 | public: |
833 | static AnnotateAttr *CreateImplicit(ASTContext &Ctx, llvm::StringRef Annotation, SourceRange Loc = SourceRange()) { |
834 | auto *A = new (Ctx) AnnotateAttr(Loc, Ctx, Annotation, 0); |
835 | A->setImplicit(true); |
836 | return A; |
837 | } |
838 | |
839 | AnnotateAttr(SourceRange R, ASTContext &Ctx |
840 | , llvm::StringRef Annotation |
841 | , unsigned SI |
842 | ) |
843 | : InheritableParamAttr(attr::Annotate, R, SI, false, false) |
844 | , annotationLength(Annotation.size()),annotation(new (Ctx, 1) char[annotationLength]) |
845 | { |
846 | if (!Annotation.empty()) |
847 | std::memcpy(annotation, Annotation.data(), annotationLength); |
848 | } |
849 | |
850 | AnnotateAttr *clone(ASTContext &C) const; |
851 | void printPretty(raw_ostream &OS, |
852 | const PrintingPolicy &Policy) const; |
853 | const char *getSpelling() const; |
854 | llvm::StringRef getAnnotation() const { |
855 | return llvm::StringRef(annotation, annotationLength); |
856 | } |
857 | unsigned getAnnotationLength() const { |
858 | return annotationLength; |
859 | } |
860 | void setAnnotation(ASTContext &C, llvm::StringRef S) { |
861 | annotationLength = S.size(); |
862 | this->annotation = new (C, 1) char [annotationLength]; |
863 | if (!S.empty()) |
864 | std::memcpy(this->annotation, S.data(), annotationLength); |
865 | } |
866 | |
867 | |
868 | |
869 | static bool classof(const Attr *A) { return A->getKind() == attr::Annotate; } |
870 | }; |
871 | |
872 | class AnyX86InterruptAttr : public InheritableAttr { |
873 | public: |
874 | static AnyX86InterruptAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
875 | auto *A = new (Ctx) AnyX86InterruptAttr(Loc, Ctx, 0); |
876 | A->setImplicit(true); |
877 | return A; |
878 | } |
879 | |
880 | AnyX86InterruptAttr(SourceRange R, ASTContext &Ctx |
881 | , unsigned SI |
882 | ) |
883 | : InheritableAttr(attr::AnyX86Interrupt, R, SI, false, false) |
884 | { |
885 | } |
886 | |
887 | AnyX86InterruptAttr *clone(ASTContext &C) const; |
888 | void printPretty(raw_ostream &OS, |
889 | const PrintingPolicy &Policy) const; |
890 | const char *getSpelling() const; |
891 | |
892 | |
893 | static bool classof(const Attr *A) { return A->getKind() == attr::AnyX86Interrupt; } |
894 | }; |
895 | |
896 | class AnyX86NoCallerSavedRegistersAttr : public InheritableAttr { |
897 | public: |
898 | static AnyX86NoCallerSavedRegistersAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
899 | auto *A = new (Ctx) AnyX86NoCallerSavedRegistersAttr(Loc, Ctx, 0); |
900 | A->setImplicit(true); |
901 | return A; |
902 | } |
903 | |
904 | AnyX86NoCallerSavedRegistersAttr(SourceRange R, ASTContext &Ctx |
905 | , unsigned SI |
906 | ) |
907 | : InheritableAttr(attr::AnyX86NoCallerSavedRegisters, R, SI, false, false) |
908 | { |
909 | } |
910 | |
911 | AnyX86NoCallerSavedRegistersAttr *clone(ASTContext &C) const; |
912 | void printPretty(raw_ostream &OS, |
913 | const PrintingPolicy &Policy) const; |
914 | const char *getSpelling() const; |
915 | |
916 | |
917 | static bool classof(const Attr *A) { return A->getKind() == attr::AnyX86NoCallerSavedRegisters; } |
918 | }; |
919 | |
920 | class AnyX86NoCfCheckAttr : public InheritableAttr { |
921 | public: |
922 | static AnyX86NoCfCheckAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
923 | auto *A = new (Ctx) AnyX86NoCfCheckAttr(Loc, Ctx, 0); |
924 | A->setImplicit(true); |
925 | return A; |
926 | } |
927 | |
928 | AnyX86NoCfCheckAttr(SourceRange R, ASTContext &Ctx |
929 | , unsigned SI |
930 | ) |
931 | : InheritableAttr(attr::AnyX86NoCfCheck, R, SI, false, false) |
932 | { |
933 | } |
934 | |
935 | AnyX86NoCfCheckAttr *clone(ASTContext &C) const; |
936 | void printPretty(raw_ostream &OS, |
937 | const PrintingPolicy &Policy) const; |
938 | const char *getSpelling() const; |
939 | |
940 | |
941 | static bool classof(const Attr *A) { return A->getKind() == attr::AnyX86NoCfCheck; } |
942 | }; |
943 | |
944 | class ArcWeakrefUnavailableAttr : public InheritableAttr { |
945 | public: |
946 | static ArcWeakrefUnavailableAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
947 | auto *A = new (Ctx) ArcWeakrefUnavailableAttr(Loc, Ctx, 0); |
948 | A->setImplicit(true); |
949 | return A; |
950 | } |
951 | |
952 | ArcWeakrefUnavailableAttr(SourceRange R, ASTContext &Ctx |
953 | , unsigned SI |
954 | ) |
955 | : InheritableAttr(attr::ArcWeakrefUnavailable, R, SI, false, false) |
956 | { |
957 | } |
958 | |
959 | ArcWeakrefUnavailableAttr *clone(ASTContext &C) const; |
960 | void printPretty(raw_ostream &OS, |
961 | const PrintingPolicy &Policy) const; |
962 | const char *getSpelling() const; |
963 | |
964 | |
965 | static bool classof(const Attr *A) { return A->getKind() == attr::ArcWeakrefUnavailable; } |
966 | }; |
967 | |
968 | class ArgumentWithTypeTagAttr : public InheritableAttr { |
969 | IdentifierInfo * argumentKind; |
970 | |
971 | ParamIdx argumentIdx; |
972 | |
973 | ParamIdx typeTagIdx; |
974 | |
975 | bool isPointer; |
976 | |
977 | public: |
978 | enum Spelling { |
979 | GNU_argument_with_type_tag = 0, |
980 | CXX11_clang_argument_with_type_tag = 1, |
981 | C2x_clang_argument_with_type_tag = 2, |
982 | GNU_pointer_with_type_tag = 3, |
983 | CXX11_clang_pointer_with_type_tag = 4, |
984 | C2x_clang_pointer_with_type_tag = 5 |
985 | }; |
986 | |
987 | static ArgumentWithTypeTagAttr *CreateImplicit(ASTContext &Ctx, Spelling S, IdentifierInfo * ArgumentKind, ParamIdx ArgumentIdx, ParamIdx TypeTagIdx, bool IsPointer, SourceRange Loc = SourceRange()) { |
988 | auto *A = new (Ctx) ArgumentWithTypeTagAttr(Loc, Ctx, ArgumentKind, ArgumentIdx, TypeTagIdx, IsPointer, S); |
989 | A->setImplicit(true); |
990 | return A; |
991 | } |
992 | |
993 | static ArgumentWithTypeTagAttr *CreateImplicit(ASTContext &Ctx, Spelling S, IdentifierInfo * ArgumentKind, ParamIdx ArgumentIdx, ParamIdx TypeTagIdx, SourceRange Loc = SourceRange()) { |
994 | auto *A = new (Ctx) ArgumentWithTypeTagAttr(Loc, Ctx, ArgumentKind, ArgumentIdx, TypeTagIdx, S); |
995 | A->setImplicit(true); |
996 | return A; |
997 | } |
998 | |
999 | ArgumentWithTypeTagAttr(SourceRange R, ASTContext &Ctx |
1000 | , IdentifierInfo * ArgumentKind |
1001 | , ParamIdx ArgumentIdx |
1002 | , ParamIdx TypeTagIdx |
1003 | , bool IsPointer |
1004 | , unsigned SI |
1005 | ) |
1006 | : InheritableAttr(attr::ArgumentWithTypeTag, R, SI, false, false) |
1007 | , argumentKind(ArgumentKind) |
1008 | , argumentIdx(ArgumentIdx) |
1009 | , typeTagIdx(TypeTagIdx) |
1010 | , isPointer(IsPointer) |
1011 | { |
1012 | } |
1013 | |
1014 | ArgumentWithTypeTagAttr(SourceRange R, ASTContext &Ctx |
1015 | , IdentifierInfo * ArgumentKind |
1016 | , ParamIdx ArgumentIdx |
1017 | , ParamIdx TypeTagIdx |
1018 | , unsigned SI |
1019 | ) |
1020 | : InheritableAttr(attr::ArgumentWithTypeTag, R, SI, false, false) |
1021 | , argumentKind(ArgumentKind) |
1022 | , argumentIdx(ArgumentIdx) |
1023 | , typeTagIdx(TypeTagIdx) |
1024 | , isPointer() |
1025 | { |
1026 | } |
1027 | |
1028 | ArgumentWithTypeTagAttr *clone(ASTContext &C) const; |
1029 | void printPretty(raw_ostream &OS, |
1030 | const PrintingPolicy &Policy) const; |
1031 | const char *getSpelling() const; |
1032 | Spelling getSemanticSpelling() const { |
1033 | switch (SpellingListIndex) { |
1034 | default: llvm_unreachable("Unknown spelling list index")::llvm::llvm_unreachable_internal("Unknown spelling list index" , "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 1034); |
1035 | case 0: return GNU_argument_with_type_tag; |
1036 | case 1: return CXX11_clang_argument_with_type_tag; |
1037 | case 2: return C2x_clang_argument_with_type_tag; |
1038 | case 3: return GNU_pointer_with_type_tag; |
1039 | case 4: return CXX11_clang_pointer_with_type_tag; |
1040 | case 5: return C2x_clang_pointer_with_type_tag; |
1041 | } |
1042 | } |
1043 | IdentifierInfo * getArgumentKind() const { |
1044 | return argumentKind; |
1045 | } |
1046 | |
1047 | ParamIdx getArgumentIdx() const { |
1048 | return argumentIdx; |
1049 | } |
1050 | |
1051 | ParamIdx getTypeTagIdx() const { |
1052 | return typeTagIdx; |
1053 | } |
1054 | |
1055 | bool getIsPointer() const { |
1056 | return isPointer; |
1057 | } |
1058 | |
1059 | |
1060 | |
1061 | static bool classof(const Attr *A) { return A->getKind() == attr::ArgumentWithTypeTag; } |
1062 | }; |
1063 | |
1064 | class ArtificialAttr : public InheritableAttr { |
1065 | public: |
1066 | static ArtificialAttr *CreateImplicit(ASTContext &Ctx, SourceRange Loc = SourceRange()) { |
1067 | auto *A = new (Ctx) ArtificialAttr(Loc, Ctx, 0); |
1068 | A->setImplicit(true); |
1069 | return A; |
1070 | } |
1071 | |
1072 | ArtificialAttr(SourceRange R, ASTContext &Ctx |
1073 | , unsigned SI |
1074 | ) |
1075 | : InheritableAttr(attr::Artificial, R, SI, false, false) |
1076 | { |
1077 | } |
1078 | |
1079 | ArtificialAttr *clone(ASTContext &C) const; |
1080 | void printPretty(raw_ostream &OS, |
1081 | const PrintingPolicy &Policy) const; |
1082 | const char *getSpelling() const; |
1083 | |
1084 | |
1085 | static bool classof(const Attr *A) { return A->getKind() == attr::Artificial; } |
1086 | }; |
1087 | |
1088 | class AsmLabelAttr : public InheritableAttr { |
1089 | unsigned labelLength; |
1090 | char *label; |
1091 | |
1092 | public: |
1093 | static AsmLabelAttr *CreateImplicit(ASTContext &Ctx, llvm::StringRef Label, SourceRange Loc = SourceRange()) { |
1094 | auto *A = new (Ctx) AsmLabelAttr(Loc, Ctx, Label, 0); |
1095 | A->setImplicit(true); |
1096 | return A; |
1097 | } |
1098 | |
1099 | AsmLabelAttr(SourceRange R, ASTContext &Ctx |
1100 | , llvm::StringRef Label |
1101 | , unsigned SI |
1102 | ) |
1103 | : InheritableAttr(attr::AsmLabel, R, SI, false, false) |
1104 | , labelLength(Label.size()),label(new (Ctx, 1) char[labelLength]) |
1105 | { |
1106 | if (!Label.empty()) |
1107 | std::memcpy(label, Label.data(), labelLength); |
1108 | } |
1109 | |
1110 | AsmLabelAttr *clone(ASTContext &C) const; |
1111 | void printPretty(raw_ostream &OS, |
1112 | const PrintingPolicy &Policy) const; |
1113 | const char *getSpelling() const; |
1114 | llvm::StringRef getLabel() const { |
1115 | return llvm::StringRef(label, labelLength); |
1116 | } |
1117 | unsigned getLabelLength() const { |
1118 | return labelLength; |
1119 | } |
1120 | void setLabel(ASTContext &C, llvm::StringRef S) { |
1121 | labelLength = S.size(); |
1122 | this->label = new (C, 1) char [labelLength]; |
1123 | if (!S.empty()) |
1124 | std::memcpy(this->label, S.data(), labelLength); |
1125 | } |
1126 | |
1127 | |
1128 | |
1129 | static bool classof(const Attr *A) { return A->getKind() == attr::AsmLabel; } |
1130 | }; |
1131 | |
1132 | class AssertCapabilityAttr : public InheritableAttr { |
1133 | unsigned args_Size; |
1134 | Expr * *args_; |
1135 | |
1136 | public: |
1137 | enum Spelling { |
1138 | GNU_assert_capability = 0, |
1139 | CXX11_clang_assert_capability = 1, |
1140 | GNU_assert_shared_capability = 2, |
1141 | CXX11_clang_assert_shared_capability = 3 |
1142 | }; |
1143 | |
1144 | static AssertCapabilityAttr *CreateImplicit(ASTContext &Ctx, Spelling S, Expr * *Args, unsigned ArgsSize, SourceRange Loc = SourceRange()) { |
1145 | auto *A = new (Ctx) AssertCapabilityAttr(Loc, Ctx, Args, ArgsSize, S); |
1146 | A->setImplicit(true); |
1147 | return A; |
1148 | } |
1149 | |
1150 | AssertCapabilityAttr(SourceRange R, ASTContext &Ctx |
1151 | , Expr * *Args, unsigned ArgsSize |
1152 | , unsigned SI |
1153 | ) |
1154 | : InheritableAttr(attr::AssertCapability, R, SI, true, true) |
1155 | , args_Size(ArgsSize), args_(new (Ctx, 16) Expr *[args_Size]) |
1156 | { |
1157 | std::copy(Args, Args + args_Size, args_); |
1158 | } |
1159 | |
1160 | AssertCapabilityAttr(SourceRange R, ASTContext &Ctx |
1161 | , unsigned SI |
1162 | ) |
1163 | : InheritableAttr(attr::AssertCapability, R, SI, true, true) |
1164 | , args_Size(0), args_(nullptr) |
1165 | { |
1166 | } |
1167 | |
1168 | AssertCapabilityAttr *clone(ASTContext &C) const; |
1169 | void printPretty(raw_ostream &OS, |
1170 | const PrintingPolicy &Policy) const; |
1171 | const char *getSpelling() const; |
1172 | Spelling getSemanticSpelling() const { |
1173 | switch (SpellingListIndex) { |
1174 | default: llvm_unreachable("Unknown spelling list index")::llvm::llvm_unreachable_internal("Unknown spelling list index" , "/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc" , 1174); |
1175 | case 0: return GNU_assert_capability; |
1176 | case 1: return CXX11_clang_assert_capability; |
1177 | case 2: return GNU_assert_shared_capability; |
1178 | case 3: return CXX11_clang_assert_shared_capability; |
1179 | } |
1180 | } |
1181 | bool isShared() const { return SpellingListIndex == 2 || |
1182 | SpellingListIndex == 3; } |
1183 | typedef Expr ** args_iterator; |
1184 | args_iterator args_begin() const { return args_; } |
1185 | args_iterator args_end() const { return args_ + args_Size; } |
1186 | unsigned args_size() const { return args_Size; } |
1187 | llvm::iterator_range<args_iterator> args() const { return llvm::make_range(args_begin(), args_end()); } |
1188 | |
1189 | |
1190 | |
1191 | |
1192 | static bool classof(const Attr *A) { return A->getKind() == attr::AssertCapability; } |
1193 | }; |
1194 | |
1195 | class AssertExclusiveLockAttr : public InheritableAttr { |
1196 | unsigned args_Size; |
1197 | Expr * *args_; |
1198 | |
1199 | public: |
1200 | static AssertExclusiveLockAttr *CreateImplicit(ASTContext &Ctx, Expr * *Args, unsigned ArgsSize, SourceRange Loc = SourceRange()) { |
1201 | auto *A = new (Ctx) AssertExclusiveLockAttr(Loc, Ctx, Args, ArgsSize, 0); |
1202 | A->setImplicit(true); |
1203 | return A; |
1204 | } |
1205 | |
1206 | AssertExclusiveLockAttr(SourceRange R, ASTContext &Ctx |
1207 | , Expr * *Args, unsigned ArgsSize |
1208 | , unsigned SI |
1209 | ) |
1210 | : InheritableAttr(attr::AssertExclusiveLock, R, SI, true, true) |
1211 | , args_Size(ArgsSize), args_(new (Ctx, 16) Expr *[args_Size]) |
1212 | { |
1213 | std::copy(Args, Args + args_Size, args_); |
1214 | } |
1215 | |
1216 | AssertExclusiveLockAttr(SourceRange R, ASTContext &Ctx |
1217 | , unsigned SI |
1218 | ) |
1219 | : InheritableAttr(attr::AssertExclusiveLock, R, SI, true, true) |
1220 | , args_Size(0), args_(nullptr) |
1221 | { |
1222 | } |
1223 | |
1224 | AssertExclusiveLockAttr *clone(ASTContext &C) const; |
1225 | void printPretty(raw_ostream &OS, |
1226 | const PrintingPolicy &Policy) const; |
1227 | const char *getSpelling() const; |
1228 | typedef Expr ** args_iterator; |
1229 | args_iterator args_begin() const { return args_; } |
1230 | args_iterator args_end() const { return args_ + args_Size; } |
1231 | unsigned args_size() const { return args_Size; } |
1232 | llvm::iterator_range<args_iterator> args() const { return llvm::make_range(args_begin(), args_end()); } |
1233 | |
1234 | |
1235 | |
1236 | |
1237 | static bool classof(const Attr *A) { return A->getKind() == attr::AssertExclusiveLock; } |
1238 | }; |
1239 | |
1240 | class AssertSharedLockAttr : public InheritableAttr { |
1241 | unsigned args_Size; |
1242 | Expr * *args_; |
1243 | |
1244 | public: |
1245 | static AssertSharedLockAttr *CreateImplicit(ASTContext &Ctx, Expr * *Args, unsigned ArgsSize, SourceRange Loc = SourceRange()) { |
1246 | auto *A = new (Ctx) AssertSharedLockAttr(Loc, Ctx, Args, ArgsSize, 0); |
1247 | A->setImplicit(true); |
1248 | return A; |
1249 | } |
1250 | |
1251 | AssertSharedLockAttr(SourceRange R, ASTContext &Ctx |
1252 | , Expr * *Args, unsigned ArgsSize |
1253 | , unsigned SI |
1254 | ) |
1255 | : InheritableAttr(attr::AssertSharedLock, R, SI, true, true) |
1256 | , args_Size(ArgsSize), args_(new (Ctx, 16) Expr *[args_Size]) |
1257 | { |
1258 | std::copy(Args, Args + args_Size, args_); |
1259 | } |
1260 | |
1261 | AssertSharedLockAttr(SourceRange R, ASTContext &Ctx |
1262 | , unsigned SI |
1263 | ) |
1264 | : InheritableAttr(attr::AssertSharedLock, R, SI, true, true) |
1265 | , args_Size(0), args_(nullptr) |
1266 | { |
1267 | } |
1268 | |
1269 | AssertSharedLockAttr *clone(ASTContext &C) const; |
1270 | void printPretty(raw_ostream &OS, |
1271 | const PrintingPolicy &Policy) const; |
1272 | const char *getSpelling() const; |
1273 | typedef Expr ** args_iterator; |
1274 | args_iterator args_begin() const { return args_; } |
1275 | args_iterator args_end() const { return args_ + args_Size; } |
1276 | unsigned args_size() const { return args_Size; } |
1277 | llvm::iterator_range<args_iterator> args() const { return llvm::make_range(args_begin(), args_end()); } |
1278 | |
1279 | |
1280 | |
1281 | |
1282 | static bool classof(const Attr *A) { return A->getKind() == attr::AssertSharedLock; } |
1283 | }; |
1284 | |
1285 | class AssumeAlignedAttr : public InheritableAttr { |
1286 | Expr * alignment; |
1287 | |
1288 | Expr * offset; |
1289 | |
1290 | public: |
1291 | static AssumeAlignedAttr *CreateImplicit(ASTContext &Ctx, Expr * Alignment, Expr * Offset, SourceRange Loc = SourceRange()) { |
1292 | auto *A = new (Ctx) AssumeAlignedAttr(Loc, Ctx, Alignment, Offset, 0); |
1293 | A->setImplicit(true); |
1294 | return A; |
1295 | } |
1296 | |
1297 | AssumeAlignedAttr(SourceRange R, ASTContext &Ctx |
1298 | , Expr * Alignment |
1299 | , Expr * Offset |
1300 | , unsigned SI |
1301 | ) |
1302 | : InheritableAttr(attr::AssumeAligned, R, SI, false, false) |
1303 | , alignment(Alignment) |
1304 | , offset(Offset) |
1305 | { |
1306 | } |
1307 | |
1308 | AssumeAlignedAttr(SourceRange R, ASTContext &Ctx |
1309 | , Expr * Alignment |
1310 | , unsigned SI |
1311 | ) |
1312 | : InheritableAttr(attr::AssumeAligned, R, SI, false, false) |
1313 | , alignment(Alignment) |
1314 | , offset() |
1315 | { |
1316 | } |
1317 | |
1318 | AssumeAlignedAttr *clone(ASTContext &C) const; |
1319 | void printPretty(raw_ostream &OS, |
1320 | const PrintingPolicy &Policy) const; |
1321 | const char *getSpelling() const; |
1322 | Expr * getAlignment() const { |
1323 | return alignment; |
1324 | } |
1325 | |
1326 | Expr * getOffset() const { |
1327 | return offset; |
1328 | } |
1329 | |
1330 | |
1331 | |
1332 | static bool classof(const Attr *A) { return A->getKind() == attr::AssumeAligned; } |
1333 | }; |
1334 | |
1335 | class AvailabilityAttr : public InheritableAttr { |
1336 | IdentifierInfo * platform; |
1337 | |
1338 | VersionTuple introduced; |
1339 | |
1340 | |
1341 | VersionTuple deprecated; |
1342 | |
1343 | |
1344 | VersionTuple obsoleted; |
1345 | |
1346 | |
1347 | bool unavailable; |
1348 | |
1349 | unsigned messageLength; |
1350 | char *message; |
1351 | |
1352 | bool strict; |
1353 | |
1354 | unsigned replacementLength; |
1355 | char *replacement; |
1356 | |
1357 | public: |
1358 | static AvailabilityAttr *CreateImplicit(ASTContext &Ctx, IdentifierInfo * Platform, VersionTuple Introduced, VersionTuple Deprecated, VersionTuple Obsoleted, bool Unavailable, llvm::StringRef Message, bool Strict, llvm::StringRef Replacement, SourceRange Loc = SourceRange()) { |
1359 | auto *A = new (Ctx) AvailabilityAttr(Loc, Ctx, Platform, Introduced, Deprecated, Obsoleted, Unavailable, Message, Strict, Replacement, 0); |
1360 | A->setImplicit(true); |
1361 | return A; |
1362 | } |
1363 | |
1364 | AvailabilityAttr(SourceRange R, ASTContext &Ctx |
1365 | , IdentifierInfo * Platform |
1366 | , VersionTuple Introduced |
1367 | , VersionTuple Deprecated |
1368 | , VersionTuple Obsoleted |
1369 | , bool Unavailable |
1370 | , llvm::StringRef Message |
1371 | , bool Strict |
1372 | , llvm::StringRef Replacement |
1373 | , unsigned SI |
1374 | ) |
1375 | : InheritableAttr(attr::Availability, R, SI, false, true) |
1376 | , platform(Platform) |
1377 | , introduced(Introduced) |
1378 | , deprecated(Deprecated) |
1379 | , obsoleted(Obsoleted) |
1380 | , unavailable(Unavailable) |
1381 | , messageLength(Message.size()),message(new (Ctx, 1) char[messageLength]) |
1382 | , strict(Strict) |
1383 | , replacementLength(Replacement.size()),replacement(new (Ctx, 1) char[replacementLength]) |
1384 | { |
1385 | if (!Message.empty()) |
1386 | std::memcpy(message, Message.data(), messageLength); |
1387 | if (!Replacement.empty()) |
1388 | std::memcpy(replacement, Replacement.data(), replacementLength); |
1389 | } |
1390 | |
1391 | AvailabilityAttr *clone(ASTContext &C) const; |
1392 | void printPretty(raw_ostream &OS, |
1393 | const PrintingPolicy &Policy) const; |
1394 | const char *getSpelling() const; |
1395 | IdentifierInfo * getPlatform() const { |
1396 | return platform; |
1397 | } |
1398 | |
1399 | VersionTuple getIntroduced() const { |
1400 | return introduced; |
1401 | } |
1402 | void setIntroduced(ASTContext &C, VersionTuple V) { |
1403 | introduced = V; |
1404 | } |
1405 | |
1406 | VersionTuple getDeprecated() const { |
1407 | return deprecated; |
1408 | } |
1409 | void setDeprecated(ASTContext &C, VersionTuple V) { |
1410 | deprecated = V; |
1411 | } |
1412 | |
1413 | VersionTuple getObsoleted() const { |
1414 | return obsoleted; |
1415 | } |
1416 | void setObsoleted(ASTContext &C, VersionTuple V) { |
1417 | obsoleted = V; |
1418 | } |
1419 | |
1420 | bool getUnavailable() const { |
1421 | return unavailable; |
1422 | } |
1423 | |
1424 | llvm::StringRef getMessage() const { |
1425 | return llvm::StringRef(message, messageLength); |
1426 | } |
1427 | unsigned getMessageLength() const { |
1428 | return messageLength; |
1429 | } |
1430 | void setMessage(ASTContext &C, llvm::StringRef S) { |
1431 | messageLength = S.size(); |
1432 | this->message = new (C, 1) char [messageLength]; |
1433 | if (!S.empty()) |
1434 | std::memcpy(this->message, S.data(), messageLength); |
1435 | } |
1436 | |
1437 | bool getStrict() const { |
1438 | return strict; |
1439 | } |
1440 | |
1441 | llvm::StringRef getReplacement() const { |
1442 | return llvm::StringRef(replacement, replacementLength); |
1443 | } |
1444 | unsigned getReplacementLength() const { |
1445 | return replacementLength; |
1446 | } |
1447 | void setReplacement(ASTContext &C, llvm::StringRef S) { |
1448 | replacementLength = S.size(); |
1449 | this->replacement = new (C, 1) char [replacementLength]; |
1450 | if (!S.empty()) |
1451 | std::memcpy(this->replacement, S.data(), replacementLength); |
1452 | } |
1453 | |
1454 | static llvm::StringRef getPrettyPlatformName(llvm::StringRef Platform) { |
1455 | return llvm::StringSwitch<llvm::StringRef>(Platform) |
1456 | .Case("android", "Android") |
1457 | .Case("ios", "iOS") |
1458 | .Case("macos", "macOS") |
1459 | .Case("tvos", "tvOS") |
1460 | .Case("watchos", "watchOS") |
1461 | .Case("ios_app_extension", "iOS (App Extension)") |
1462 | .Case("macos_app_extension", "macOS (App Extension)") |
1463 | .Case("tvos_app_extension", "tvOS (App Extension)") |
1464 | .Case("watchos_app_extension", "watchOS (App Extension)") |
1465 | .Default(llvm::StringRef()); |
1466 | } |
1467 | static llvm::StringRef getPlatformNameSourceSpelling(llvm::StringRef Platform) { |
1468 | return llvm::StringSwitch<llvm::StringRef>(Platform) |
1469 | .Case("ios", "iOS") |
1470 | .Case("macos", "macOS") |
1471 | .Case("tvos", "tvOS") |
1472 | .Case("watchos", "watchOS") |
1473 | .Case("ios_app_extension", "iOSApplicationExtension") |
1474 | .Case("macos_app_extension", "macOSApplicationExtension") |
1475 | .Case("tvos_app_extension", "tvOSApplicationExtension") |
1476 | .Case("watchos_app_extension", "watchOSApplicationExtension") |