Bug Summary

File:tools/clang/lib/AST/Decl.cpp
Warning:line 2077, column 5
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Decl.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-eagerly-assume -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-7/lib/clang/7.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn329677/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/backward -internal-isystem /usr/include/clang/7.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-7/lib/clang/7.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/lib/AST -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-04-11-031539-24776-1 -x c++ /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp

/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/AST/Decl.cpp

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
74using namespace clang;
75
76Decl *clang::getPrimaryMergedDecl(Decl *D) {
77 return D->getASTContext().getPrimaryMergedDecl(D);
78}
79
80void 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.
99bool Decl::isOutOfLine() const {
100 return !getLexicalDeclContext()->Equals(getDeclContext());
101}
102
103TranslationUnitDecl::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?
159static 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.
165static LVComputationKind
166withExplicitVisibilityAlready(LVComputationKind Kind) {
167 Kind.IgnoreExplicitVisibility = true;
168 return Kind;
169}
170
171static 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?
180static 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?
188template <class T> static typename
189std::enable_if<!std::is_base_of<RedeclarableTemplateDecl, T>::value, bool>::type
190isExplicitMemberSpecialization(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.
201static bool isExplicitMemberSpecialization(const RedeclarableTemplateDecl *D) {
202 return D->isMemberSpecialization();
203}
204
205/// Given a visibility attribute, return the explicit visibility
206/// associated with it.
207template <class T>
208static 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.
221static 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
239LinkageInfo 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.
249LinkageInfo 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
302static 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.
318LinkageInfo
319LinkageComputer::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
362LinkageInfo
363LinkageComputer::getLVForTemplateArgumentList(const TemplateArgumentList &TArgs,
364 LVComputationKind computation) {
365 return getLVForTemplateArgumentList(TArgs.asArray(), computation);
366}
367
368static 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
387void 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?
408static 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?
419static 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.
455void 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.
483static 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.
507void 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
531static 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
559template <typename T> static bool isFirstInExternCContext(T *D) {
560 const T *First = D->getFirstDecl();
561 return First->isInExternCContext();
562}
563
564static 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
571static 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
585static 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
597static 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
611LinkageInfo
612LinkageComputer::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
884LinkageInfo
885LinkageComputer::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
1037void NamedDecl::anchor() {}
1038
1039bool 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
1049ObjCStringFormatFamily 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
1062Linkage 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
1070LinkageInfo NamedDecl::getLinkageAndVisibility() const {
1071 return LinkageComputer{}.getDeclLinkageAndVisibility(this);
1072}
1073
1074static Optional<Visibility>
1075getExplicitVisibilityAux(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
1144Optional<Visibility>
1145NamedDecl::getExplicitVisibility(ExplicitVisibilityKind kind) const {
1146 return getExplicitVisibilityAux(this, kind, false);
1147}
1148
1149LinkageInfo 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
1183LinkageInfo 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
1264static inline const CXXRecordDecl*
1265getOutermostEnclosingLambda(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
1277LinkageInfo 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.
1399LinkageInfo 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
1445LinkageInfo LinkageComputer::getDeclLinkageAndVisibility(const NamedDecl *D) {
1446 return getLVForDecl(D,
1447 LVComputationKind(usesTypeVisibility(D)
1448 ? NamedDecl::VisibilityForType
1449 : NamedDecl::VisibilityForValue));
1450}
1451
1452Module *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
1487void NamedDecl::printName(raw_ostream &os) const {
1488 os << Name;
1489}
1490
1491std::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
1498void NamedDecl::printQualifiedName(raw_ostream &OS) const {
1499 printQualifiedName(OS, getASTContext().getPrintingPolicy());
1500}
1501
1502void 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
1591void 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
1600template<typename T> static bool isRedeclarableImpl(Redeclarable<T> *) {
1601 return true;
1602}
1603static bool isRedeclarableImpl(...) { return false; }
1604static 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
1615bool 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
1691bool NamedDecl::hasLinkage() const {
1692 return getFormalLinkage() != NoLinkage;
1693}
1694
1695NamedDecl *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
1709bool 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
1728template <typename DeclT>
1729static SourceLocation getTemplateOrInnerLocStart(const DeclT *decl) {
1730 if (decl->getNumTemplateParameterLists() > 0)
1731 return decl->getTemplateParameterList(0)->getTemplateLoc();
1732 else
1733 return decl->getInnerLocStart();
1734}
1735
1736SourceLocation DeclaratorDecl::getTypeSpecStartLoc() const {
1737 TypeSourceInfo *TSI = getTypeSourceInfo();
1738 if (TSI) return TSI->getTypeLoc().getBeginLoc();
1739 return SourceLocation();
1740}
1741
1742void 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
1772void 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
1788SourceLocation 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.
1794static 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
1828SourceRange 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
1839void 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
1859const 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
1872VarDecl::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
1889VarDecl *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
1896VarDecl *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
1902void 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
1907VarDecl::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
1929SourceRange 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
1940template<typename T>
1941static 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
1968template<typename T>
1969static 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
1981LanguageLinkage VarDecl::getLanguageLinkage() const {
1982 return getDeclLanguageLinkage(*this);
1983}
1984
1985bool VarDecl::isExternC() const {
1986 return isDeclExternC(*this);
1987}
1988
1989bool VarDecl::isInExternCContext() const {
1990 return getLexicalDeclContext()->isExternCContext();
1991}
1992
1993bool VarDecl::isInExternCXXContext() const {
1994 return getLexicalDeclContext()->isExternCXXContext();
1995}
1996
1997VarDecl *VarDecl::getCanonicalDecl() { return getFirstDecl(); }
1998
1999VarDecl::DefinitionKind
2000VarDecl::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
2086VarDecl *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
2103VarDecl *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
2112VarDecl::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
2125const 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
2135bool 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
2143Expr *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
2153Stmt **VarDecl::getInitAddress() {
2154 if (auto *ES = Init.dyn_cast<EvaluatedStmt *>())
2155 return &ES->Value;
2156
2157 return Init.getAddrOfPtr1();
2158}
2159
2160bool 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
2176void 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
2185bool 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.
2215EvaluatedStmt *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
2229APValue *VarDecl::evaluateValue() const {
2230 SmallVector<PartialDiagnosticAt, 8> Notes;
2231 return evaluateValue(Notes);
2232}
2233
2234APValue *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
2280APValue *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
2288bool VarDecl::isInitKnownICE() const {
2289 if (EvaluatedStmt *Eval = Init.dyn_cast<EvaluatedStmt *>())
2290 return Eval->CheckedICE;
2291
2292 return false;
2293}
2294
2295bool 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
2301bool 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
2337template<typename DeclT>
2338static 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
2345VarDecl *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
2390VarDecl *VarDecl::getInstantiatedFromStaticDataMember() const {
2391 if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo())
2392 return cast<VarDecl>(MSI->getInstantiatedFrom());
2393
2394 return nullptr;
2395}
2396
2397TemplateSpecializationKind 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
2407SourceLocation 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
2417VarTemplateDecl *VarDecl::getDescribedVarTemplate() const {
2418 return getASTContext().getTemplateOrSpecializationInfo(this)
2419 .dyn_cast<VarTemplateDecl *>();
2420}
2421
2422void VarDecl::setDescribedVarTemplate(VarTemplateDecl *Template) {
2423 getASTContext().setTemplateOrSpecializationInfo(this, Template);
2424}
2425
2426MemberSpecializationInfo *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
2435void 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
2463void
2464VarDecl::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
2475ParmVarDecl *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
2484QualType 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
2492ParmVarDecl *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
2498SourceRange 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
2513Expr *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
2525void ParmVarDecl::setDefaultArg(Expr *defarg) {
2526 ParmVarDeclBits.DefaultArgKind = DAK_Normal;
2527 Init = defarg;
2528}
2529
2530SourceRange 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
2550void ParmVarDecl::setUninstantiatedDefaultArg(Expr *arg) {
2551 ParmVarDeclBits.DefaultArgKind = DAK_Uninstantiated;
2552 Init = arg;
2553}
2554
2555Expr *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
2561bool 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
2569bool ParmVarDecl::isParameterPack() const {
2570 return isa<PackExpansionType>(getType());
2571}
2572
2573void ParmVarDecl::setParameterIndexLarge(unsigned parameterIndex) {
2574 getASTContext().setParameterIndex(this, parameterIndex);
2575 ParmVarDeclBits.ParameterIndex = ParameterIndexSentinel;
2576}
2577
2578unsigned ParmVarDecl::getParameterIndexLarge() const {
2579 return getASTContext().getParameterIndex(this);
2580}
2581
2582//===----------------------------------------------------------------------===//
2583// FunctionDecl Implementation
2584//===----------------------------------------------------------------------===//
2585
2586void 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
2594bool FunctionDecl::isVariadic() const {
2595 if (const auto *FT = getType()->getAs<FunctionProtoType>())
2596 return FT->isVariadic();
2597 return false;
2598}
2599
2600bool 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
2611bool 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
2625bool 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
2636Stmt *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
2646void FunctionDecl::setBody(Stmt *B) {
2647 Body = B;
2648 if (B)
2649 EndRangeLoc = B->getLocEnd();
2650}
2651
2652void FunctionDecl::setPure(bool P) {
2653 IsPure = P;
2654 if (P)
2655 if (auto *Parent = dyn_cast<CXXRecordDecl>(getDeclContext()))
2656 Parent->markedVirtualFunctionPure();
2657}
2658
2659template<std::size_t Len>
2660static bool isNamed(const NamedDecl *ND, const char (&Str)[Len]) {
2661 IdentifierInfo *II = ND->getIdentifier();
2662 return II && II->isStr(Str);
2663}
2664
2665bool 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
2673bool 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
2700bool 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
2723bool 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
2789bool 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
2803LanguageLinkage FunctionDecl::getLanguageLinkage() const {
2804 return getDeclLanguageLinkage(*this);
2805}
2806
2807bool FunctionDecl::isExternC() const {
2808 return isDeclExternC(*this);
2809}
2810
2811bool FunctionDecl::isInExternCContext() const {
2812 return getLexicalDeclContext()->isExternCContext();
2813}
2814
2815bool FunctionDecl::isInExternCXXContext() const {
2816 return getLexicalDeclContext()->isExternCXXContext();
2817}
2818
2819bool 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
2839bool 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
2850void
2851FunctionDecl::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
2865FunctionDecl *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.
2876unsigned 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.
2937unsigned FunctionDecl::getNumParams() const {
2938 const auto *FPT = getType()->getAs<FunctionProtoType>();
2939 return FPT ? FPT->getNumParams() : 0;
2940}
2941
2942void 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).
2958unsigned 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.
2974bool 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
2990static 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
3002static 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.
3024bool 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
3084SourceRange 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
3104SourceRange 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
3116const 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.
3150bool 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.
3199OverloadedOperatorKind 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.
3208const IdentifierInfo *FunctionDecl::getLiteralIdentifier() const {
3209 if (getDeclName().getNameKind() == DeclarationName::CXXLiteralOperatorName)
3210 return getDeclName().getCXXLiteralIdentifier();
3211 else
3212 return nullptr;
3213}
3214
3215FunctionDecl::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
3231FunctionDecl *FunctionDecl::getInstantiatedFromMemberFunction() const {
3232 if (MemberSpecializationInfo *Info = getMemberSpecializationInfo())
3233 return cast<FunctionDecl>(Info->getInstantiatedFrom());
3234
3235 return nullptr;
3236}
3237
3238MemberSpecializationInfo *FunctionDecl::getMemberSpecializationInfo() const {
3239 return TemplateOrSpecialization.dyn_cast<MemberSpecializationInfo *>();
3240}
3241
3242void
3243FunctionDecl::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
3253FunctionTemplateDecl *FunctionDecl::getDescribedFunctionTemplate() const {
3254 return TemplateOrSpecialization.dyn_cast<FunctionTemplateDecl *>();
3255}
3256
3257void FunctionDecl::setDescribedFunctionTemplate(FunctionTemplateDecl *Template) {
3258 TemplateOrSpecialization = Template;
3259}
3260
3261bool 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
3300bool 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
3313FunctionDecl *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
3354FunctionTemplateDecl *FunctionDecl::getPrimaryTemplate() const {
3355 if (FunctionTemplateSpecializationInfo *Info
3356 = TemplateOrSpecialization
3357 .dyn_cast<FunctionTemplateSpecializationInfo*>()) {
3358 return Info->Template.getPointer();
3359 }
3360 return nullptr;
3361}
3362
3363FunctionDecl *FunctionDecl::getClassScopeSpecializationPattern() const {
3364 return getASTContext().getClassScopeSpecializationPattern(this);
3365}
3366
3367FunctionTemplateSpecializationInfo *
3368FunctionDecl::getTemplateSpecializationInfo() const {
3369 return TemplateOrSpecialization
3370 .dyn_cast<FunctionTemplateSpecializationInfo *>();
3371}
3372
3373const TemplateArgumentList *
3374FunctionDecl::getTemplateSpecializationArgs() const {
3375 if (FunctionTemplateSpecializationInfo *Info
3376 = TemplateOrSpecialization
3377 .dyn_cast<FunctionTemplateSpecializationInfo*>()) {
3378 return Info->TemplateArguments;
3379 }
3380 return nullptr;
3381}
3382
3383const ASTTemplateArgumentListInfo *
3384FunctionDecl::getTemplateSpecializationArgsAsWritten() const {
3385 if (FunctionTemplateSpecializationInfo *Info
3386 = TemplateOrSpecialization
3387 .dyn_cast<FunctionTemplateSpecializationInfo*>()) {
3388 return Info->TemplateArgumentsAsWritten;
3389 }
3390 return nullptr;
3391}
3392
3393void
3394FunctionDecl::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
3414void
3415FunctionDecl::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
3425DependentFunctionTemplateSpecializationInfo *
3426FunctionDecl::getDependentSpecializationInfo() const {
3427 return TemplateOrSpecialization
3428 .dyn_cast<DependentFunctionTemplateSpecializationInfo *>();
3429}
3430
3431DependentFunctionTemplateSpecializationInfo *
3432DependentFunctionTemplateSpecializationInfo::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
3441DependentFunctionTemplateSpecializationInfo::
3442DependentFunctionTemplateSpecializationInfo(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
3457TemplateSpecializationKind 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
3473void
3474FunctionDecl::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
3501SourceLocation 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
3513bool 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
3536SourceRange FunctionDecl::getSourceRange() const {
3537 return SourceRange(getOuterLocStart(), EndRangeLoc);
3538}
3539
3540unsigned 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
3635unsigned 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
3664FieldDecl *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
3673FieldDecl *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
3679bool 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
3689unsigned 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
3694bool FieldDecl::isZeroLengthBitField(const ASTContext &Ctx) const {
3695 return isUnnamedBitfield() && !getBitWidth()->isValueDependent() &&
3696 getBitWidthValue(Ctx) == 0;
3697}
3698
3699unsigned 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
3719SourceRange 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
3728void 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
3742SourceLocation TagDecl::getOuterLocStart() const {
3743 return getTemplateOrInnerLocStart(this);
3744}
3745
3746SourceRange TagDecl::getSourceRange() const {
3747 SourceLocation RBraceLoc = BraceRange.getEnd();
3748 SourceLocation E = RBraceLoc.isValid() ? RBraceLoc : getLocation();
3749 return SourceRange(getOuterLocStart(), E);
3750}
3751
3752TagDecl *TagDecl::getCanonicalDecl() { return getFirstDecl(); }
3753
3754void 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
3763void 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
3774void 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
3786TagDecl *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
3809void 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
3829void 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
3844void EnumDecl::anchor() {}
3845
3846EnumDecl *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
3858EnumDecl *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
3866SourceRange EnumDecl::getIntegerTypeRange() const {
3867 if (const TypeSourceInfo *TI = getIntegerTypeSourceInfo())
3868 return TI->getTypeLoc().getSourceRange();
3869 return SourceRange();
3870}
3871
3872void 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
3885bool EnumDecl::isClosed() const {
3886 if (const auto *A = getAttr<EnumExtensibilityAttr>())
3887 return A->getExtensibility() == EnumExtensibilityAttr::Closed;
3888 return true;
3889}
3890
3891bool EnumDecl::isClosedFlag() const {
3892 return isClosed() && hasAttr<FlagEnumAttr>();
3893}
3894
3895bool EnumDecl::isClosedNonFlag() const {
3896 return isClosed() && !hasAttr<FlagEnumAttr>();
3897}
3898
3899TemplateSpecializationKind EnumDecl::getTemplateSpecializationKind() const {
3900 if (MemberSpecializationInfo *MSI = getMemberSpecializationInfo())
3901 return MSI->getTemplateSpecializationKind();
3902
3903 return TSK_Undeclared;
3904}
3905
3906void 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
3917EnumDecl *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
3932EnumDecl *EnumDecl::getInstantiatedFromMemberEnum() const {
3933 if (SpecializationInfo)
3934 return cast<EnumDecl>(SpecializationInfo->getInstantiatedFrom());
3935
3936 return nullptr;
3937}
3938
3939void 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
3949RecordDecl::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
3963RecordDecl *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
3974RecordDecl *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
3982bool RecordDecl::isInjectedClassName() const {
3983 return isImplicit() && getDeclName() && getDeclContext()->isRecord() &&
3984 cast<RecordDecl>(getDeclContext())->getDeclName() == getDeclName();
3985}
3986
3987bool RecordDecl::isLambda() const {
3988 if (auto RD = dyn_cast<CXXRecordDecl>(this))
3989 return RD->isLambda();
3990 return false;
3991}
3992
3993bool RecordDecl::isCapturedRecord() const {
3994 return hasAttr<CapturedRecordAttr>();
3995}
3996
3997void RecordDecl::setCapturedRecord() {
3998 addAttr(CapturedRecordAttr::CreateImplicit(getASTContext()));
1
Calling 'CapturedRecordAttr::CreateImplicit'
3999}
4000
4001RecordDecl::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.
4010void 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.
4018bool RecordDecl::isMsStruct(const ASTContext &C) const {
4019 return hasAttr<MSStructAttr>() || C.getLangOpts().MSBitfields == 1;
4020}
4021
4022void 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
4048bool 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
4093const 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
4112void 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
4123void 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
4136bool 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
4145SourceRange BlockDecl::getSourceRange() const {
4146 return SourceRange(getLocation(), Body? Body->getLocEnd() : getLocation());
4147}
4148
4149//===----------------------------------------------------------------------===//
4150// Other Decl Allocation/Deallocation Method Implementations
4151//===----------------------------------------------------------------------===//
4152
4153void TranslationUnitDecl::anchor() {}
4154
4155TranslationUnitDecl *TranslationUnitDecl::Create(ASTContext &C) {
4156 return new (C, (DeclContext *)nullptr) TranslationUnitDecl(C);
4157}
4158
4159void PragmaCommentDecl::anchor() {}
4160
4161PragmaCommentDecl *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
4174PragmaCommentDecl *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
4181void PragmaDetectMismatchDecl::anchor() {}
4182
4183PragmaDetectMismatchDecl *
4184PragmaDetectMismatchDecl::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
4199PragmaDetectMismatchDecl *
4200PragmaDetectMismatchDecl::CreateDeserialized(ASTContext &C, unsigned ID,
4201 unsigned NameValueSize) {
4202 return new (C, ID, additionalSizeToAlloc<char>(NameValueSize + 1))
4203 PragmaDetectMismatchDecl(nullptr, SourceLocation(), 0);
4204}
4205
4206void ExternCContextDecl::anchor() {}
4207
4208ExternCContextDecl *ExternCContextDecl::Create(const ASTContext &C,
4209 TranslationUnitDecl *DC) {
4210 return new (C, DC) ExternCContextDecl(DC);
4211}
4212
4213void LabelDecl::anchor() {}
4214
4215LabelDecl *LabelDecl::Create(ASTContext &C, DeclContext *DC,
4216 SourceLocation IdentL, IdentifierInfo *II) {
4217 return new (C, DC) LabelDecl(DC, IdentL, II, nullptr, IdentL);
4218}
4219
4220LabelDecl *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
4227LabelDecl *LabelDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
4228 return new (C, ID) LabelDecl(nullptr, SourceLocation(), nullptr, nullptr,
4229 SourceLocation());
4230}
4231
4232void 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
4239void ValueDecl::anchor() {}
4240
4241bool 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
4249void ImplicitParamDecl::anchor() {}
4250
4251ImplicitParamDecl *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
4258ImplicitParamDecl *ImplicitParamDecl::Create(ASTContext &C, QualType Type,
4259 ImplicitParamKind ParamKind) {
4260 return new (C, nullptr) ImplicitParamDecl(C, Type, ParamKind);
4261}
4262
4263ImplicitParamDecl *ImplicitParamDecl::CreateDeserialized(ASTContext &C,
4264 unsigned ID) {
4265 return new (C, ID) ImplicitParamDecl(C, QualType(), ImplicitParamKind::Other);
4266}
4267
4268FunctionDecl *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
4283FunctionDecl *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
4289BlockDecl *BlockDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L) {
4290 return new (C, DC) BlockDecl(DC, L);
4291}
4292
4293BlockDecl *BlockDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
4294 return new (C, ID) BlockDecl(nullptr, SourceLocation());
4295}
4296
4297CapturedDecl::CapturedDecl(DeclContext *DC, unsigned NumParams)
4298 : Decl(Captured, DC, SourceLocation()), DeclContext(Captured),
4299 NumParams(NumParams), ContextParam(0), BodyAndNothrow(nullptr, false) {}
4300
4301CapturedDecl *CapturedDecl::Create(ASTContext &C, DeclContext *DC,
4302 unsigned NumParams) {
4303 return new (C, DC, additionalSizeToAlloc<ImplicitParamDecl *>(NumParams))
4304 CapturedDecl(DC, NumParams);
4305}
4306
4307CapturedDecl *CapturedDecl::CreateDeserialized(ASTContext &C, unsigned ID,
4308 unsigned NumParams) {
4309 return new (C, ID, additionalSizeToAlloc<ImplicitParamDecl *>(NumParams))
4310 CapturedDecl(nullptr, NumParams);
4311}
4312
4313Stmt *CapturedDecl::getBody() const { return BodyAndNothrow.getPointer(); }
4314void CapturedDecl::setBody(Stmt *B) { BodyAndNothrow.setPointer(B); }
4315
4316bool CapturedDecl::isNothrow() const { return BodyAndNothrow.getInt(); }
4317void CapturedDecl::setNothrow(bool Nothrow) { BodyAndNothrow.setInt(Nothrow); }
4318
4319EnumConstantDecl *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
4326EnumConstantDecl *
4327EnumConstantDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
4328 return new (C, ID) EnumConstantDecl(nullptr, SourceLocation(), nullptr,
4329 QualType(), nullptr, llvm::APSInt());
4330}
4331
4332void IndirectFieldDecl::anchor() {}
4333
4334IndirectFieldDecl::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
4346IndirectFieldDecl *
4347IndirectFieldDecl::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
4353IndirectFieldDecl *IndirectFieldDecl::CreateDeserialized(ASTContext &C,
4354 unsigned ID) {
4355 return new (C, ID) IndirectFieldDecl(C, nullptr, SourceLocation(),
4356 DeclarationName(), QualType(), None);
4357}
4358
4359SourceRange EnumConstantDecl::getSourceRange() const {
4360 SourceLocation End = getLocation();
4361 if (Init)
4362 End = Init->getLocEnd();
4363 return SourceRange(getLocation(), End);
4364}
4365
4366void TypeDecl::anchor() {}
4367
4368TypedefDecl *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
4374void TypedefNameDecl::anchor() {}
4375
4376TagDecl *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
4391bool 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
4413TypedefDecl *TypedefDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
4414 return new (C, ID) TypedefDecl(C, nullptr, SourceLocation(), SourceLocation(),
4415 nullptr, nullptr);
4416}
4417
4418TypeAliasDecl *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
4425TypeAliasDecl *TypeAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
4426 return new (C, ID) TypeAliasDecl(C, nullptr, SourceLocation(),
4427 SourceLocation(), nullptr, nullptr);
4428}
4429
4430SourceRange 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
4439SourceRange 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
4446void FileScopeAsmDecl::anchor() {}
4447
4448FileScopeAsmDecl *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
4455FileScopeAsmDecl *FileScopeAsmDecl::CreateDeserialized(ASTContext &C,
4456 unsigned ID) {
4457 return new (C, ID) FileScopeAsmDecl(nullptr, nullptr, SourceLocation(),
4458 SourceLocation());
4459}
4460
4461void EmptyDecl::anchor() {}
4462
4463EmptyDecl *EmptyDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L) {
4464 return new (C, DC) EmptyDecl(DC, L);
4465}
4466
4467EmptyDecl *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.
4477static unsigned getNumModuleIdentifiers(Module *Mod) {
4478 unsigned Result = 1;
4479 while (Mod->Parent) {
4480 Mod = Mod->Parent;
4481 ++Result;
4482 }
4483 return Result;
4484}
4485
4486ImportDecl::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
4496ImportDecl::ImportDecl(DeclContext *DC, SourceLocation StartLoc,
4497 Module *Imported, SourceLocation EndLoc)
4498 : Decl(Import, DC, StartLoc), ImportedAndComplete(Imported, false) {
4499 *getTrailingObjects<SourceLocation>() = EndLoc;
4500}
4501
4502ImportDecl *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
4510ImportDecl *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
4520ImportDecl *ImportDecl::CreateDeserialized(ASTContext &C, unsigned ID,
4521 unsigned NumLocations) {
4522 return new (C, ID, additionalSizeToAlloc<SourceLocation>(NumLocations))
4523 ImportDecl(EmptyShell());
4524}
4525
4526ArrayRef<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
4535SourceRange 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
4546void ExportDecl::anchor() {}
4547
4548ExportDecl *ExportDecl::Create(ASTContext &C, DeclContext *DC,
4549 SourceLocation ExportLoc) {
4550 return new (C, DC) ExportDecl(DC, ExportLoc);
4551}
4552
4553ExportDecl *ExportDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
4554 return new (C, ID) ExportDecl(nullptr, SourceLocation());
4555}

/build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include/clang/AST/Attrs.inc

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
12class AMDGPUFlatWorkGroupSizeAttr : public InheritableAttr {
13unsigned min;
14
15unsigned max;
16
17public:
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
52class AMDGPUNumSGPRAttr : public InheritableAttr {
53unsigned numSGPR;
54
55public:
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
84class AMDGPUNumVGPRAttr : public InheritableAttr {
85unsigned numVGPR;
86
87public:
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
116class AMDGPUWavesPerEUAttr : public InheritableAttr {
117unsigned min;
118
119unsigned max;
120
121public:
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
166class ARMInterruptAttr : public InheritableAttr {
167public:
168 enum InterruptType {
169 IRQ,
170 FIQ,
171 SWI,
172 ABORT,
173 UNDEF,
174 Generic
175 };
176private:
177 InterruptType interrupt;
178
179public:
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
243class AVRInterruptAttr : public InheritableAttr {
244public:
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
267class AVRSignalAttr : public InheritableAttr {
268public:
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
291class AbiTagAttr : public Attr {
292 unsigned tags_Size;
293 StringRef *tags_;
294
295public:
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
344class AcquireCapabilityAttr : public InheritableAttr {
345 unsigned args_Size;
346 Expr * *args_;
347
348public:
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
412class AcquiredAfterAttr : public InheritableAttr {
413 unsigned args_Size;
414 Expr * *args_;
415
416public:
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
457class AcquiredBeforeAttr : public InheritableAttr {
458 unsigned args_Size;
459 Expr * *args_;
460
461public:
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
502class AliasAttr : public Attr {
503unsigned aliaseeLength;
504char *aliasee;
505
506public:
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
546class AlignMac68kAttr : public InheritableAttr {
547public:
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
570class AlignValueAttr : public Attr {
571Expr * alignment;
572
573public:
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
602class AlignedAttr : public InheritableAttr {
603bool isalignmentExpr;
604union {
605Expr *alignmentExpr;
606TypeSourceInfo *alignmentType;
607};
608
609public:
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
684class AllocAlignAttr : public InheritableAttr {
685ParamIdx paramIndex;
686
687public:
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
716class AllocSizeAttr : public InheritableAttr {
717ParamIdx elemSizeParam;
718
719ParamIdx numElemsParam;
720
721public:
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
766class AlwaysInlineAttr : public InheritableAttr {
767public:
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
804class AnalyzerNoReturnAttr : public InheritableAttr {
805public:
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
828class AnnotateAttr : public InheritableParamAttr {
829unsigned annotationLength;
830char *annotation;
831
832public:
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
872class AnyX86InterruptAttr : public InheritableAttr {
873public:
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
896class AnyX86NoCallerSavedRegistersAttr : public InheritableAttr {
897public:
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
920class AnyX86NoCfCheckAttr : public InheritableAttr {
921public:
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
944class ArcWeakrefUnavailableAttr : public InheritableAttr {
945public:
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
968class ArgumentWithTypeTagAttr : public InheritableAttr {
969IdentifierInfo * argumentKind;
970
971ParamIdx argumentIdx;
972
973ParamIdx typeTagIdx;
974
975bool isPointer;
976
977public:
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
1064class ArtificialAttr : public InheritableAttr {
1065public:
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
1088class AsmLabelAttr : public InheritableAttr {
1089unsigned labelLength;
1090char *label;
1091
1092public:
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
1132class AssertCapabilityAttr : public InheritableAttr {
1133 unsigned args_Size;
1134 Expr * *args_;
1135
1136public:
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
1195class AssertExclusiveLockAttr : public InheritableAttr {
1196 unsigned args_Size;
1197 Expr * *args_;
1198
1199public:
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
1240class AssertSharedLockAttr : public InheritableAttr {
1241 unsigned args_Size;
1242 Expr * *args_;
1243
1244public:
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
1285class AssumeAlignedAttr : public InheritableAttr {
1286Expr * alignment;
1287
1288Expr * offset;
1289
1290public:
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
1335class AvailabilityAttr : public InheritableAttr {
1336IdentifierInfo * platform;
1337
1338VersionTuple introduced;
1339
1340
1341VersionTuple deprecated;
1342
1343
1344VersionTuple obsoleted;
1345
1346
1347bool unavailable;
1348
1349unsigned messageLength;
1350char *message;
1351
1352bool strict;
1353
1354unsigned replacementLength;
1355char *replacement;
1356
1357public:
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
1454static 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}
1467static 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")