clang 19.0.0git
DeclBase.cpp
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1//===- DeclBase.cpp - Declaration AST Node Implementation -----------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the Decl and DeclContext classes.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/AST/DeclBase.h"
15#include "clang/AST/ASTLambda.h"
17#include "clang/AST/Attr.h"
19#include "clang/AST/Decl.h"
20#include "clang/AST/DeclCXX.h"
23#include "clang/AST/DeclObjC.h"
28#include "clang/AST/Stmt.h"
29#include "clang/AST/Type.h"
31#include "clang/Basic/LLVM.h"
32#include "clang/Basic/Module.h"
37#include "llvm/ADT/ArrayRef.h"
38#include "llvm/ADT/PointerIntPair.h"
39#include "llvm/ADT/SmallVector.h"
40#include "llvm/ADT/StringRef.h"
41#include "llvm/Support/Casting.h"
42#include "llvm/Support/ErrorHandling.h"
43#include "llvm/Support/MathExtras.h"
44#include "llvm/Support/VersionTuple.h"
45#include "llvm/Support/raw_ostream.h"
46#include <algorithm>
47#include <cassert>
48#include <cstddef>
49#include <string>
50#include <tuple>
51#include <utility>
52
53using namespace clang;
54
55//===----------------------------------------------------------------------===//
56// Statistics
57//===----------------------------------------------------------------------===//
58
59#define DECL(DERIVED, BASE) static int n##DERIVED##s = 0;
60#define ABSTRACT_DECL(DECL)
61#include "clang/AST/DeclNodes.inc"
62
65}
66
67#define DECL(DERIVED, BASE) \
68 static_assert(alignof(Decl) >= alignof(DERIVED##Decl), \
69 "Alignment sufficient after objects prepended to " #DERIVED);
70#define ABSTRACT_DECL(DECL)
71#include "clang/AST/DeclNodes.inc"
72
73void *Decl::operator new(std::size_t Size, const ASTContext &Context,
74 unsigned ID, std::size_t Extra) {
75 // Allocate an extra 8 bytes worth of storage, which ensures that the
76 // resulting pointer will still be 8-byte aligned.
77 static_assert(sizeof(unsigned) * 2 >= alignof(Decl),
78 "Decl won't be misaligned");
79 void *Start = Context.Allocate(Size + Extra + 8);
80 void *Result = (char*)Start + 8;
81
82 unsigned *PrefixPtr = (unsigned *)Result - 2;
83
84 // Zero out the first 4 bytes; this is used to store the owning module ID.
85 PrefixPtr[0] = 0;
86
87 // Store the global declaration ID in the second 4 bytes.
88 PrefixPtr[1] = ID;
89
90 return Result;
91}
92
93void *Decl::operator new(std::size_t Size, const ASTContext &Ctx,
94 DeclContext *Parent, std::size_t Extra) {
95 assert(!Parent || &Parent->getParentASTContext() == &Ctx);
96 // With local visibility enabled, we track the owning module even for local
97 // declarations. We create the TU decl early and may not yet know what the
98 // LangOpts are, so conservatively allocate the storage.
99 if (Ctx.getLangOpts().trackLocalOwningModule() || !Parent) {
100 // Ensure required alignment of the resulting object by adding extra
101 // padding at the start if required.
102 size_t ExtraAlign =
103 llvm::offsetToAlignment(sizeof(Module *), llvm::Align(alignof(Decl)));
104 auto *Buffer = reinterpret_cast<char *>(
105 ::operator new(ExtraAlign + sizeof(Module *) + Size + Extra, Ctx));
106 Buffer += ExtraAlign;
107 auto *ParentModule =
108 Parent ? cast<Decl>(Parent)->getOwningModule() : nullptr;
109 return new (Buffer) Module*(ParentModule) + 1;
110 }
111 return ::operator new(Size + Extra, Ctx);
112}
113
114Module *Decl::getOwningModuleSlow() const {
115 assert(isFromASTFile() && "Not from AST file?");
117}
118
121}
122
123const char *Decl::getDeclKindName() const {
124 switch (DeclKind) {
125 default: llvm_unreachable("Declaration not in DeclNodes.inc!");
126#define DECL(DERIVED, BASE) case DERIVED: return #DERIVED;
127#define ABSTRACT_DECL(DECL)
128#include "clang/AST/DeclNodes.inc"
129 }
130}
131
133 InvalidDecl = Invalid;
134 assert(!isa<TagDecl>(this) || !cast<TagDecl>(this)->isCompleteDefinition());
135 if (!Invalid) {
136 return;
137 }
138
139 if (!isa<ParmVarDecl>(this)) {
140 // Defensive maneuver for ill-formed code: we're likely not to make it to
141 // a point where we set the access specifier, so default it to "public"
142 // to avoid triggering asserts elsewhere in the front end.
144 }
145
146 // Marking a DecompositionDecl as invalid implies all the child BindingDecl's
147 // are invalid too.
148 if (auto *DD = dyn_cast<DecompositionDecl>(this)) {
149 for (auto *Binding : DD->bindings()) {
150 Binding->setInvalidDecl();
151 }
152 }
153}
154
156 switch (getDeclKind()) {
157#define DECL(DERIVED, BASE) case Decl::DERIVED: return true;
158#define ABSTRACT_DECL(DECL)
159#include "clang/AST/DeclNodes.inc"
160 }
161 return false;
162}
163
164const char *DeclContext::getDeclKindName() const {
165 switch (getDeclKind()) {
166#define DECL(DERIVED, BASE) case Decl::DERIVED: return #DERIVED;
167#define ABSTRACT_DECL(DECL)
168#include "clang/AST/DeclNodes.inc"
169 }
170 llvm_unreachable("Declaration context not in DeclNodes.inc!");
171}
172
173bool Decl::StatisticsEnabled = false;
175 StatisticsEnabled = true;
176}
177
179 llvm::errs() << "\n*** Decl Stats:\n";
180
181 int totalDecls = 0;
182#define DECL(DERIVED, BASE) totalDecls += n##DERIVED##s;
183#define ABSTRACT_DECL(DECL)
184#include "clang/AST/DeclNodes.inc"
185 llvm::errs() << " " << totalDecls << " decls total.\n";
186
187 int totalBytes = 0;
188#define DECL(DERIVED, BASE) \
189 if (n##DERIVED##s > 0) { \
190 totalBytes += (int)(n##DERIVED##s * sizeof(DERIVED##Decl)); \
191 llvm::errs() << " " << n##DERIVED##s << " " #DERIVED " decls, " \
192 << sizeof(DERIVED##Decl) << " each (" \
193 << n##DERIVED##s * sizeof(DERIVED##Decl) \
194 << " bytes)\n"; \
195 }
196#define ABSTRACT_DECL(DECL)
197#include "clang/AST/DeclNodes.inc"
198
199 llvm::errs() << "Total bytes = " << totalBytes << "\n";
200}
201
203 switch (k) {
204#define DECL(DERIVED, BASE) case DERIVED: ++n##DERIVED##s; break;
205#define ABSTRACT_DECL(DECL)
206#include "clang/AST/DeclNodes.inc"
207 }
208}
209
211 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(this))
212 return TTP->isParameterPack();
213 if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(this))
214 return NTTP->isParameterPack();
215 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(this))
216 return TTP->isParameterPack();
217 return false;
218}
219
221 if (const auto *Var = dyn_cast<VarDecl>(this))
222 return Var->isParameterPack();
223
225}
226
228 if (auto *FD = dyn_cast<FunctionDecl>(this))
229 return FD;
230 if (const auto *FTD = dyn_cast<FunctionTemplateDecl>(this))
231 return FTD->getTemplatedDecl();
232 return nullptr;
233}
234
236 return isa<TemplateDecl>(this);
237}
238
240 if (auto *FD = dyn_cast<FunctionDecl>(this))
241 return FD->getDescribedFunctionTemplate();
242 if (auto *RD = dyn_cast<CXXRecordDecl>(this))
243 return RD->getDescribedClassTemplate();
244 if (auto *VD = dyn_cast<VarDecl>(this))
245 return VD->getDescribedVarTemplate();
246 if (auto *AD = dyn_cast<TypeAliasDecl>(this))
247 return AD->getDescribedAliasTemplate();
248
249 return nullptr;
250}
251
253 if (auto *TD = getDescribedTemplate())
254 return TD->getTemplateParameters();
255 if (auto *CTPSD = dyn_cast<ClassTemplatePartialSpecializationDecl>(this))
256 return CTPSD->getTemplateParameters();
257 if (auto *VTPSD = dyn_cast<VarTemplatePartialSpecializationDecl>(this))
258 return VTPSD->getTemplateParameters();
259 return nullptr;
260}
261
262bool Decl::isTemplated() const {
263 // A declaration is templated if it is a template or a template pattern, or
264 // is within (lexcially for a friend or local function declaration,
265 // semantically otherwise) a dependent context.
266 if (auto *AsDC = dyn_cast<DeclContext>(this))
267 return AsDC->isDependentContext();
268 auto *DC = getFriendObjectKind() || isLocalExternDecl()
270 return DC->isDependentContext() || isTemplateDecl() ||
272}
273
274unsigned Decl::getTemplateDepth() const {
275 if (auto *DC = dyn_cast<DeclContext>(this))
276 if (DC->isFileContext())
277 return 0;
278
279 if (auto *TPL = getDescribedTemplateParams())
280 return TPL->getDepth() + 1;
281
282 // If this is a dependent lambda, there might be an enclosing variable
283 // template. In this case, the next step is not the parent DeclContext (or
284 // even a DeclContext at all).
285 auto *RD = dyn_cast<CXXRecordDecl>(this);
286 if (RD && RD->isDependentLambda())
287 if (Decl *Context = RD->getLambdaContextDecl())
288 return Context->getTemplateDepth();
289
290 const DeclContext *DC =
292 return cast<Decl>(DC)->getTemplateDepth();
293}
294
295const DeclContext *Decl::getParentFunctionOrMethod(bool LexicalParent) const {
296 for (const DeclContext *DC = LexicalParent ? getLexicalDeclContext()
297 : getDeclContext();
298 DC && !DC->isFileContext(); DC = DC->getParent())
299 if (DC->isFunctionOrMethod())
300 return DC;
301
302 return nullptr;
303}
304
305//===----------------------------------------------------------------------===//
306// PrettyStackTraceDecl Implementation
307//===----------------------------------------------------------------------===//
308
309void PrettyStackTraceDecl::print(raw_ostream &OS) const {
310 SourceLocation TheLoc = Loc;
311 if (TheLoc.isInvalid() && TheDecl)
312 TheLoc = TheDecl->getLocation();
313
314 if (TheLoc.isValid()) {
315 TheLoc.print(OS, SM);
316 OS << ": ";
317 }
318
319 OS << Message;
320
321 if (const auto *DN = dyn_cast_or_null<NamedDecl>(TheDecl)) {
322 OS << " '";
323 DN->printQualifiedName(OS);
324 OS << '\'';
325 }
326 OS << '\n';
327}
328
329//===----------------------------------------------------------------------===//
330// Decl Implementation
331//===----------------------------------------------------------------------===//
332
333// Out-of-line virtual method providing a home for Decl.
334Decl::~Decl() = default;
335
337 DeclCtx = DC;
338}
339
341 if (DC == getLexicalDeclContext())
342 return;
343
344 if (isInSemaDC()) {
345 setDeclContextsImpl(getDeclContext(), DC, getASTContext());
346 } else {
347 getMultipleDC()->LexicalDC = DC;
348 }
349
350 // FIXME: We shouldn't be changing the lexical context of declarations
351 // imported from AST files.
352 if (!isFromASTFile()) {
353 setModuleOwnershipKind(getModuleOwnershipKindForChildOf(DC));
354 if (hasOwningModule())
355 setLocalOwningModule(cast<Decl>(DC)->getOwningModule());
356 }
357
358 assert(
360 getOwningModule()) &&
361 "hidden declaration has no owning module");
362}
363
364void Decl::setDeclContextsImpl(DeclContext *SemaDC, DeclContext *LexicalDC,
365 ASTContext &Ctx) {
366 if (SemaDC == LexicalDC) {
367 DeclCtx = SemaDC;
368 } else {
369 auto *MDC = new (Ctx) Decl::MultipleDC();
370 MDC->SemanticDC = SemaDC;
371 MDC->LexicalDC = LexicalDC;
372 DeclCtx = MDC;
373 }
374}
375
377 const DeclContext *LDC = getLexicalDeclContext();
378 if (!LDC->isDependentContext())
379 return false;
380 while (true) {
381 if (LDC->isFunctionOrMethod())
382 return true;
383 if (!isa<TagDecl>(LDC))
384 return false;
385 if (const auto *CRD = dyn_cast<CXXRecordDecl>(LDC))
386 if (CRD->isLambda())
387 return true;
388 LDC = LDC->getLexicalParent();
389 }
390 return false;
391}
392
394 for (const DeclContext *DC = getDeclContext(); DC; DC = DC->getParent()) {
395 if (const auto *ND = dyn_cast<NamespaceDecl>(DC))
396 if (ND->isAnonymousNamespace())
397 return true;
398 }
399
400 return false;
401}
402
404 const DeclContext *DC = getDeclContext();
405 return DC && DC->getNonTransparentContext()->isStdNamespace();
406}
407
409 const auto *DC = dyn_cast<DeclContext>(this);
410 return DC && DC->isFileContext();
411}
412
414 ASTContext &Ctx, const Decl *D, QualType Ty,
415 LangOptions::StrictFlexArraysLevelKind StrictFlexArraysLevel,
416 bool IgnoreTemplateOrMacroSubstitution) {
417 // For compatibility with existing code, we treat arrays of length 0 or
418 // 1 as flexible array members.
419 const auto *CAT = Ctx.getAsConstantArrayType(Ty);
420 if (CAT) {
422
423 llvm::APInt Size = CAT->getSize();
424 if (StrictFlexArraysLevel == FAMKind::IncompleteOnly)
425 return false;
426
427 // GCC extension, only allowed to represent a FAM.
428 if (Size.isZero())
429 return true;
430
431 if (StrictFlexArraysLevel == FAMKind::ZeroOrIncomplete && Size.uge(1))
432 return false;
433
434 if (StrictFlexArraysLevel == FAMKind::OneZeroOrIncomplete && Size.uge(2))
435 return false;
436 } else if (!Ctx.getAsIncompleteArrayType(Ty)) {
437 return false;
438 }
439
440 if (const auto *OID = dyn_cast_if_present<ObjCIvarDecl>(D))
441 return OID->getNextIvar() == nullptr;
442
443 const auto *FD = dyn_cast_if_present<FieldDecl>(D);
444 if (!FD)
445 return false;
446
447 if (CAT) {
448 // GCC treats an array memeber of a union as an FAM if the size is one or
449 // zero.
450 llvm::APInt Size = CAT->getSize();
451 if (FD->getParent()->isUnion() && (Size.isZero() || Size.isOne()))
452 return true;
453 }
454
455 // Don't consider sizes resulting from macro expansions or template argument
456 // substitution to form C89 tail-padded arrays.
457 if (IgnoreTemplateOrMacroSubstitution) {
458 TypeSourceInfo *TInfo = FD->getTypeSourceInfo();
459 while (TInfo) {
460 TypeLoc TL = TInfo->getTypeLoc();
461
462 // Look through typedefs.
464 const TypedefNameDecl *TDL = TTL.getTypedefNameDecl();
465 TInfo = TDL->getTypeSourceInfo();
466 continue;
467 }
468
469 if (auto CTL = TL.getAs<ConstantArrayTypeLoc>()) {
470 if (const Expr *SizeExpr =
471 dyn_cast_if_present<IntegerLiteral>(CTL.getSizeExpr());
472 !SizeExpr || SizeExpr->getExprLoc().isMacroID())
473 return false;
474 }
475
476 break;
477 }
478 }
479
480 // Test that the field is the last in the structure.
482 DeclContext::decl_iterator(const_cast<FieldDecl *>(FD)));
483 return ++FI == FD->getParent()->field_end();
484}
485
487 if (auto *TUD = dyn_cast<TranslationUnitDecl>(this))
488 return TUD;
489
491 assert(DC && "This decl is not contained in a translation unit!");
492
493 while (!DC->isTranslationUnit()) {
494 DC = DC->getParent();
495 assert(DC && "This decl is not contained in a translation unit!");
496 }
497
498 return cast<TranslationUnitDecl>(DC);
499}
500
503}
504
505/// Helper to get the language options from the ASTContext.
506/// Defined out of line to avoid depending on ASTContext.h.
508 return getASTContext().getLangOpts();
509}
510
513}
514
515unsigned Decl::getMaxAlignment() const {
516 if (!hasAttrs())
517 return 0;
518
519 unsigned Align = 0;
520 const AttrVec &V = getAttrs();
521 ASTContext &Ctx = getASTContext();
522 specific_attr_iterator<AlignedAttr> I(V.begin()), E(V.end());
523 for (; I != E; ++I) {
524 if (!I->isAlignmentErrorDependent())
525 Align = std::max(Align, I->getAlignment(Ctx));
526 }
527 return Align;
528}
529
530bool Decl::isUsed(bool CheckUsedAttr) const {
531 const Decl *CanonD = getCanonicalDecl();
532 if (CanonD->Used)
533 return true;
534
535 // Check for used attribute.
536 // Ask the most recent decl, since attributes accumulate in the redecl chain.
537 if (CheckUsedAttr && getMostRecentDecl()->hasAttr<UsedAttr>())
538 return true;
539
540 // The information may have not been deserialized yet. Force deserialization
541 // to complete the needed information.
542 return getMostRecentDecl()->getCanonicalDecl()->Used;
543}
544
546 if (isUsed(false))
547 return;
548
549 if (C.getASTMutationListener())
550 C.getASTMutationListener()->DeclarationMarkedUsed(this);
551
552 setIsUsed();
553}
554
555bool Decl::isReferenced() const {
556 if (Referenced)
557 return true;
558
559 // Check redeclarations.
560 for (const auto *I : redecls())
561 if (I->Referenced)
562 return true;
563
564 return false;
565}
566
567ExternalSourceSymbolAttr *Decl::getExternalSourceSymbolAttr() const {
568 const Decl *Definition = nullptr;
569 if (auto *ID = dyn_cast<ObjCInterfaceDecl>(this)) {
570 Definition = ID->getDefinition();
571 } else if (auto *PD = dyn_cast<ObjCProtocolDecl>(this)) {
572 Definition = PD->getDefinition();
573 } else if (auto *TD = dyn_cast<TagDecl>(this)) {
574 Definition = TD->getDefinition();
575 }
576 if (!Definition)
577 Definition = this;
578
579 if (auto *attr = Definition->getAttr<ExternalSourceSymbolAttr>())
580 return attr;
581 if (auto *dcd = dyn_cast<Decl>(getDeclContext())) {
582 return dcd->getAttr<ExternalSourceSymbolAttr>();
583 }
584
585 return nullptr;
586}
587
589 return hasAttr<AliasAttr>() || hasAttr<IFuncAttr>() ||
590 hasAttr<LoaderUninitializedAttr>();
591}
592
594 if (auto *AA = getAttr<AliasAttr>())
595 return AA;
596 if (auto *IFA = getAttr<IFuncAttr>())
597 return IFA;
598 if (auto *NZA = getAttr<LoaderUninitializedAttr>())
599 return NZA;
600 return nullptr;
601}
602
603static StringRef getRealizedPlatform(const AvailabilityAttr *A,
604 const ASTContext &Context) {
605 // Check if this is an App Extension "platform", and if so chop off
606 // the suffix for matching with the actual platform.
607 StringRef RealizedPlatform = A->getPlatform()->getName();
608 if (!Context.getLangOpts().AppExt)
609 return RealizedPlatform;
610 size_t suffix = RealizedPlatform.rfind("_app_extension");
611 if (suffix != StringRef::npos)
612 return RealizedPlatform.slice(0, suffix);
613 return RealizedPlatform;
614}
615
616/// Determine the availability of the given declaration based on
617/// the target platform.
618///
619/// When it returns an availability result other than \c AR_Available,
620/// if the \p Message parameter is non-NULL, it will be set to a
621/// string describing why the entity is unavailable.
622///
623/// FIXME: Make these strings localizable, since they end up in
624/// diagnostics.
626 const AvailabilityAttr *A,
627 std::string *Message,
628 VersionTuple EnclosingVersion) {
629 if (EnclosingVersion.empty())
630 EnclosingVersion = Context.getTargetInfo().getPlatformMinVersion();
631
632 if (EnclosingVersion.empty())
633 return AR_Available;
634
635 StringRef ActualPlatform = A->getPlatform()->getName();
636 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
637
638 // Match the platform name.
639 if (getRealizedPlatform(A, Context) != TargetPlatform)
640 return AR_Available;
641
642 StringRef PrettyPlatformName
643 = AvailabilityAttr::getPrettyPlatformName(ActualPlatform);
644
645 if (PrettyPlatformName.empty())
646 PrettyPlatformName = ActualPlatform;
647
648 std::string HintMessage;
649 if (!A->getMessage().empty()) {
650 HintMessage = " - ";
651 HintMessage += A->getMessage();
652 }
653
654 // Make sure that this declaration has not been marked 'unavailable'.
655 if (A->getUnavailable()) {
656 if (Message) {
657 Message->clear();
658 llvm::raw_string_ostream Out(*Message);
659 Out << "not available on " << PrettyPlatformName
660 << HintMessage;
661 }
662
663 return AR_Unavailable;
664 }
665
666 // Make sure that this declaration has already been introduced.
667 if (!A->getIntroduced().empty() &&
668 EnclosingVersion < A->getIntroduced()) {
669 if (Message) {
670 Message->clear();
671 llvm::raw_string_ostream Out(*Message);
672 VersionTuple VTI(A->getIntroduced());
673 Out << "introduced in " << PrettyPlatformName << ' '
674 << VTI << HintMessage;
675 }
676
677 return A->getStrict() ? AR_Unavailable : AR_NotYetIntroduced;
678 }
679
680 // Make sure that this declaration hasn't been obsoleted.
681 if (!A->getObsoleted().empty() && EnclosingVersion >= A->getObsoleted()) {
682 if (Message) {
683 Message->clear();
684 llvm::raw_string_ostream Out(*Message);
685 VersionTuple VTO(A->getObsoleted());
686 Out << "obsoleted in " << PrettyPlatformName << ' '
687 << VTO << HintMessage;
688 }
689
690 return AR_Unavailable;
691 }
692
693 // Make sure that this declaration hasn't been deprecated.
694 if (!A->getDeprecated().empty() && EnclosingVersion >= A->getDeprecated()) {
695 if (Message) {
696 Message->clear();
697 llvm::raw_string_ostream Out(*Message);
698 VersionTuple VTD(A->getDeprecated());
699 Out << "first deprecated in " << PrettyPlatformName << ' '
700 << VTD << HintMessage;
701 }
702
703 return AR_Deprecated;
704 }
705
706 return AR_Available;
707}
708
710 VersionTuple EnclosingVersion,
711 StringRef *RealizedPlatform) const {
712 if (auto *FTD = dyn_cast<FunctionTemplateDecl>(this))
713 return FTD->getTemplatedDecl()->getAvailability(Message, EnclosingVersion,
714 RealizedPlatform);
715
717 std::string ResultMessage;
718
719 for (const auto *A : attrs()) {
720 if (const auto *Deprecated = dyn_cast<DeprecatedAttr>(A)) {
721 if (Result >= AR_Deprecated)
722 continue;
723
724 if (Message)
725 ResultMessage = std::string(Deprecated->getMessage());
726
728 continue;
729 }
730
731 if (const auto *Unavailable = dyn_cast<UnavailableAttr>(A)) {
732 if (Message)
733 *Message = std::string(Unavailable->getMessage());
734 return AR_Unavailable;
735 }
736
737 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
739 Message, EnclosingVersion);
740
741 if (AR == AR_Unavailable) {
742 if (RealizedPlatform)
743 *RealizedPlatform = Availability->getPlatform()->getName();
744 return AR_Unavailable;
745 }
746
747 if (AR > Result) {
748 Result = AR;
749 if (Message)
750 ResultMessage.swap(*Message);
751 }
752 continue;
753 }
754 }
755
756 if (Message)
757 Message->swap(ResultMessage);
758 return Result;
759}
760
761VersionTuple Decl::getVersionIntroduced() const {
762 const ASTContext &Context = getASTContext();
763 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
764 for (const auto *A : attrs()) {
765 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
766 if (getRealizedPlatform(Availability, Context) != TargetPlatform)
767 continue;
768 if (!Availability->getIntroduced().empty())
769 return Availability->getIntroduced();
770 }
771 }
772 return {};
773}
774
775bool Decl::canBeWeakImported(bool &IsDefinition) const {
776 IsDefinition = false;
777
778 // Variables, if they aren't definitions.
779 if (const auto *Var = dyn_cast<VarDecl>(this)) {
780 if (Var->isThisDeclarationADefinition()) {
781 IsDefinition = true;
782 return false;
783 }
784 return true;
785 }
786 // Functions, if they aren't definitions.
787 if (const auto *FD = dyn_cast<FunctionDecl>(this)) {
788 if (FD->hasBody()) {
789 IsDefinition = true;
790 return false;
791 }
792 return true;
793
794 }
795 // Objective-C classes, if this is the non-fragile runtime.
796 if (isa<ObjCInterfaceDecl>(this) &&
798 return true;
799 }
800 // Nothing else.
801 return false;
802}
803
805 bool IsDefinition;
806 if (!canBeWeakImported(IsDefinition))
807 return false;
808
809 for (const auto *A : getMostRecentDecl()->attrs()) {
810 if (isa<WeakImportAttr>(A))
811 return true;
812
813 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
814 if (CheckAvailability(getASTContext(), Availability, nullptr,
815 VersionTuple()) == AR_NotYetIntroduced)
816 return true;
817 }
818 }
819
820 return false;
821}
822
824 switch (DeclKind) {
825 case Function:
826 case CXXDeductionGuide:
827 case CXXMethod:
828 case CXXConstructor:
829 case ConstructorUsingShadow:
830 case CXXDestructor:
831 case CXXConversion:
832 case EnumConstant:
833 case Var:
834 case ImplicitParam:
835 case ParmVar:
836 case ObjCMethod:
837 case ObjCProperty:
838 case MSProperty:
839 case HLSLBuffer:
840 return IDNS_Ordinary;
841 case Label:
842 return IDNS_Label;
843 case IndirectField:
844 return IDNS_Ordinary | IDNS_Member;
845
846 case Binding:
847 case NonTypeTemplateParm:
848 case VarTemplate:
849 case Concept:
850 // These (C++-only) declarations are found by redeclaration lookup for
851 // tag types, so we include them in the tag namespace.
852 return IDNS_Ordinary | IDNS_Tag;
853
854 case ObjCCompatibleAlias:
855 case ObjCInterface:
856 return IDNS_Ordinary | IDNS_Type;
857
858 case Typedef:
859 case TypeAlias:
860 case TemplateTypeParm:
861 case ObjCTypeParam:
862 return IDNS_Ordinary | IDNS_Type;
863
864 case UnresolvedUsingTypename:
866
867 case UsingShadow:
868 return 0; // we'll actually overwrite this later
869
870 case UnresolvedUsingValue:
871 return IDNS_Ordinary | IDNS_Using;
872
873 case Using:
874 case UsingPack:
875 case UsingEnum:
876 return IDNS_Using;
877
878 case ObjCProtocol:
879 return IDNS_ObjCProtocol;
880
881 case Field:
882 case ObjCAtDefsField:
883 case ObjCIvar:
884 return IDNS_Member;
885
886 case Record:
887 case CXXRecord:
888 case Enum:
889 return IDNS_Tag | IDNS_Type;
890
891 case Namespace:
892 case NamespaceAlias:
893 return IDNS_Namespace;
894
895 case FunctionTemplate:
896 return IDNS_Ordinary;
897
898 case ClassTemplate:
899 case TemplateTemplateParm:
900 case TypeAliasTemplate:
902
903 case UnresolvedUsingIfExists:
904 return IDNS_Type | IDNS_Ordinary;
905
906 case OMPDeclareReduction:
907 return IDNS_OMPReduction;
908
909 case OMPDeclareMapper:
910 return IDNS_OMPMapper;
911
912 // Never have names.
913 case Friend:
914 case FriendTemplate:
915 case AccessSpec:
916 case LinkageSpec:
917 case Export:
918 case FileScopeAsm:
919 case TopLevelStmt:
920 case StaticAssert:
921 case ObjCPropertyImpl:
922 case PragmaComment:
923 case PragmaDetectMismatch:
924 case Block:
925 case Captured:
926 case TranslationUnit:
927 case ExternCContext:
928 case Decomposition:
929 case MSGuid:
930 case UnnamedGlobalConstant:
931 case TemplateParamObject:
932
933 case UsingDirective:
934 case BuiltinTemplate:
935 case ClassTemplateSpecialization:
936 case ClassTemplatePartialSpecialization:
937 case VarTemplateSpecialization:
938 case VarTemplatePartialSpecialization:
939 case ObjCImplementation:
940 case ObjCCategory:
941 case ObjCCategoryImpl:
942 case Import:
943 case OMPThreadPrivate:
944 case OMPAllocate:
945 case OMPRequires:
946 case OMPCapturedExpr:
947 case Empty:
948 case LifetimeExtendedTemporary:
949 case RequiresExprBody:
950 case ImplicitConceptSpecialization:
951 // Never looked up by name.
952 return 0;
953 }
954
955 llvm_unreachable("Invalid DeclKind!");
956}
957
958void Decl::setAttrsImpl(const AttrVec &attrs, ASTContext &Ctx) {
959 assert(!HasAttrs && "Decl already contains attrs.");
960
961 AttrVec &AttrBlank = Ctx.getDeclAttrs(this);
962 assert(AttrBlank.empty() && "HasAttrs was wrong?");
963
964 AttrBlank = attrs;
965 HasAttrs = true;
966}
967
969 if (!HasAttrs) return;
970
971 HasAttrs = false;
973}
974
976 if (!hasAttrs()) {
977 setAttrs(AttrVec(1, A));
978 return;
979 }
980
981 AttrVec &Attrs = getAttrs();
982 if (!A->isInherited()) {
983 Attrs.push_back(A);
984 return;
985 }
986
987 // Attribute inheritance is processed after attribute parsing. To keep the
988 // order as in the source code, add inherited attributes before non-inherited
989 // ones.
990 auto I = Attrs.begin(), E = Attrs.end();
991 for (; I != E; ++I) {
992 if (!(*I)->isInherited())
993 break;
994 }
995 Attrs.insert(I, A);
996}
997
998const AttrVec &Decl::getAttrs() const {
999 assert(HasAttrs && "No attrs to get!");
1000 return getASTContext().getDeclAttrs(this);
1001}
1002
1004 Decl::Kind DK = D->getDeclKind();
1005 switch (DK) {
1006#define DECL(NAME, BASE)
1007#define DECL_CONTEXT(NAME) \
1008 case Decl::NAME: \
1009 return static_cast<NAME##Decl *>(const_cast<DeclContext *>(D));
1010#include "clang/AST/DeclNodes.inc"
1011 default:
1012 llvm_unreachable("a decl that inherits DeclContext isn't handled");
1013 }
1014}
1015
1017 Decl::Kind DK = D->getKind();
1018 switch(DK) {
1019#define DECL(NAME, BASE)
1020#define DECL_CONTEXT(NAME) \
1021 case Decl::NAME: \
1022 return static_cast<NAME##Decl *>(const_cast<Decl *>(D));
1023#include "clang/AST/DeclNodes.inc"
1024 default:
1025 llvm_unreachable("a decl that inherits DeclContext isn't handled");
1026 }
1027}
1028
1030 // Special handling of FunctionDecl to avoid de-serializing the body from PCH.
1031 // FunctionDecl stores EndRangeLoc for this purpose.
1032 if (const auto *FD = dyn_cast<FunctionDecl>(this)) {
1033 const FunctionDecl *Definition;
1034 if (FD->hasBody(Definition))
1035 return Definition->getSourceRange().getEnd();
1036 return {};
1037 }
1038
1039 if (Stmt *Body = getBody())
1040 return Body->getSourceRange().getEnd();
1041
1042 return {};
1043}
1044
1045bool Decl::AccessDeclContextCheck() const {
1046#ifndef NDEBUG
1047 // Suppress this check if any of the following hold:
1048 // 1. this is the translation unit (and thus has no parent)
1049 // 2. this is a template parameter (and thus doesn't belong to its context)
1050 // 3. this is a non-type template parameter
1051 // 4. the context is not a record
1052 // 5. it's invalid
1053 // 6. it's a C++0x static_assert.
1054 // 7. it's a block literal declaration
1055 // 8. it's a temporary with lifetime extended due to being default value.
1056 if (isa<TranslationUnitDecl>(this) || isa<TemplateTypeParmDecl>(this) ||
1057 isa<NonTypeTemplateParmDecl>(this) || !getDeclContext() ||
1058 !isa<CXXRecordDecl>(getDeclContext()) || isInvalidDecl() ||
1059 isa<StaticAssertDecl>(this) || isa<BlockDecl>(this) ||
1060 // FIXME: a ParmVarDecl can have ClassTemplateSpecialization
1061 // as DeclContext (?).
1062 isa<ParmVarDecl>(this) ||
1063 // FIXME: a ClassTemplateSpecialization or CXXRecordDecl can have
1064 // AS_none as access specifier.
1065 isa<CXXRecordDecl>(this) || isa<LifetimeExtendedTemporaryDecl>(this))
1066 return true;
1067
1068 assert(Access != AS_none &&
1069 "Access specifier is AS_none inside a record decl");
1070#endif
1071 return true;
1072}
1073
1075 const DeclContext *DC = getLexicalDeclContext();
1076
1077 while (DC && !isa<ExportDecl>(DC))
1078 DC = DC->getLexicalParent();
1079
1080 return DC && isa<ExportDecl>(DC);
1081}
1082
1084 auto *M = getOwningModule();
1085
1086 if (!M)
1087 return false;
1088
1089 M = M->getTopLevelModule();
1090 // FIXME: It is problematic if the header module lives in another module
1091 // unit. Consider to fix this by techniques like
1092 // ExternalASTSource::hasExternalDefinitions.
1093 if (M->isHeaderLikeModule())
1094 return false;
1095
1096 // A global module without parent implies that we're parsing the global
1097 // module. So it can't be in another module unit.
1098 if (M->isGlobalModule())
1099 return false;
1100
1101 assert(M->isNamedModule() && "New module kind?");
1102 return M != getASTContext().getCurrentNamedModule();
1103}
1104
1106 return getASTContext().getLangOpts().SkipODRCheckInGMF && getOwningModule() &&
1108}
1109
1110static Decl::Kind getKind(const Decl *D) { return D->getKind(); }
1111static Decl::Kind getKind(const DeclContext *DC) { return DC->getDeclKind(); }
1112
1113int64_t Decl::getID() const {
1114 return getASTContext().getAllocator().identifyKnownAlignedObject<Decl>(this);
1115}
1116
1117const FunctionType *Decl::getFunctionType(bool BlocksToo) const {
1118 QualType Ty;
1119 if (const auto *D = dyn_cast<ValueDecl>(this))
1120 Ty = D->getType();
1121 else if (const auto *D = dyn_cast<TypedefNameDecl>(this))
1122 Ty = D->getUnderlyingType();
1123 else
1124 return nullptr;
1125
1126 if (Ty->isFunctionPointerType())
1127 Ty = Ty->castAs<PointerType>()->getPointeeType();
1128 else if (Ty->isFunctionReferenceType())
1129 Ty = Ty->castAs<ReferenceType>()->getPointeeType();
1130 else if (BlocksToo && Ty->isBlockPointerType())
1131 Ty = Ty->castAs<BlockPointerType>()->getPointeeType();
1132
1133 return Ty->getAs<FunctionType>();
1134}
1135
1137 QualType Ty;
1138 if (const auto *D = dyn_cast<ValueDecl>(this))
1139 Ty = D->getType();
1140 else if (const auto *D = dyn_cast<TypedefNameDecl>(this))
1141 Ty = D->getUnderlyingType();
1142 else
1143 return false;
1144
1146}
1147
1149 assert(getDeclContext());
1151}
1152
1153/// Starting at a given context (a Decl or DeclContext), look for a
1154/// code context that is not a closure (a lambda, block, etc.).
1155template <class T> static Decl *getNonClosureContext(T *D) {
1156 if (getKind(D) == Decl::CXXMethod) {
1157 auto *MD = cast<CXXMethodDecl>(D);
1158 if (MD->getOverloadedOperator() == OO_Call &&
1159 MD->getParent()->isLambda())
1160 return getNonClosureContext(MD->getParent()->getParent());
1161 return MD;
1162 }
1163 if (auto *FD = dyn_cast<FunctionDecl>(D))
1164 return FD;
1165 if (auto *MD = dyn_cast<ObjCMethodDecl>(D))
1166 return MD;
1167 if (auto *BD = dyn_cast<BlockDecl>(D))
1168 return getNonClosureContext(BD->getParent());
1169 if (auto *CD = dyn_cast<CapturedDecl>(D))
1170 return getNonClosureContext(CD->getParent());
1171 return nullptr;
1172}
1173
1175 return ::getNonClosureContext(this);
1176}
1177
1179 return ::getNonClosureContext(this);
1180}
1181
1182//===----------------------------------------------------------------------===//
1183// DeclContext Implementation
1184//===----------------------------------------------------------------------===//
1185
1187 DeclContextBits.DeclKind = K;
1190 setNeedToReconcileExternalVisibleStorage(false);
1191 setHasLazyLocalLexicalLookups(false);
1192 setHasLazyExternalLexicalLookups(false);
1193 setUseQualifiedLookup(false);
1194}
1195
1197 Decl::Kind DK = D->getKind();
1198 switch (DK) {
1199#define DECL(NAME, BASE)
1200#define DECL_CONTEXT(NAME) case Decl::NAME:
1201#include "clang/AST/DeclNodes.inc"
1202 return true;
1203 default:
1204 return false;
1205 }
1206}
1207
1208DeclContext::~DeclContext() = default;
1209
1210/// Find the parent context of this context that will be
1211/// used for unqualified name lookup.
1212///
1213/// Generally, the parent lookup context is the semantic context. However, for
1214/// a friend function the parent lookup context is the lexical context, which
1215/// is the class in which the friend is declared.
1217 // FIXME: Find a better way to identify friends.
1218 if (isa<FunctionDecl>(this))
1221 return getLexicalParent();
1222
1223 // A lookup within the call operator of a lambda never looks in the lambda
1224 // class; instead, skip to the context in which that closure type is
1225 // declared.
1226 if (isLambdaCallOperator(this))
1227 return getParent()->getParent();
1228
1229 return getParent();
1230}
1231
1233 const DeclContext *Ctx = this;
1234
1235 do {
1236 if (Ctx->isClosure())
1237 return cast<BlockDecl>(Ctx);
1238 Ctx = Ctx->getParent();
1239 } while (Ctx);
1240
1241 return nullptr;
1242}
1243
1245 return isNamespace() &&
1246 cast<NamespaceDecl>(this)->isInline();
1247}
1248
1250 if (!isNamespace())
1251 return false;
1252
1253 const auto *ND = cast<NamespaceDecl>(this);
1254 if (ND->isInline()) {
1255 return ND->getParent()->isStdNamespace();
1256 }
1257
1259 return false;
1260
1261 const IdentifierInfo *II = ND->getIdentifier();
1262 return II && II->isStr("std");
1263}
1264
1266 if (isFileContext())
1267 return false;
1268
1269 if (isa<ClassTemplatePartialSpecializationDecl>(this))
1270 return true;
1271
1272 if (const auto *Record = dyn_cast<CXXRecordDecl>(this)) {
1273 if (Record->getDescribedClassTemplate())
1274 return true;
1275
1276 if (Record->isDependentLambda())
1277 return true;
1278 if (Record->isNeverDependentLambda())
1279 return false;
1280 }
1281
1282 if (const auto *Function = dyn_cast<FunctionDecl>(this)) {
1283 if (Function->getDescribedFunctionTemplate())
1284 return true;
1285
1286 // Friend function declarations are dependent if their *lexical*
1287 // context is dependent.
1288 if (cast<Decl>(this)->getFriendObjectKind())
1290 }
1291
1292 // FIXME: A variable template is a dependent context, but is not a
1293 // DeclContext. A context within it (such as a lambda-expression)
1294 // should be considered dependent.
1295
1296 return getParent() && getParent()->isDependentContext();
1297}
1298
1300 if (getDeclKind() == Decl::Enum)
1301 return !cast<EnumDecl>(this)->isScoped();
1302
1303 return isa<LinkageSpecDecl, ExportDecl, HLSLBufferDecl>(this);
1304}
1305
1306static bool isLinkageSpecContext(const DeclContext *DC,
1308 while (DC->getDeclKind() != Decl::TranslationUnit) {
1309 if (DC->getDeclKind() == Decl::LinkageSpec)
1310 return cast<LinkageSpecDecl>(DC)->getLanguage() == ID;
1311 DC = DC->getLexicalParent();
1312 }
1313 return false;
1314}
1315
1318}
1319
1321 const DeclContext *DC = this;
1322 while (DC->getDeclKind() != Decl::TranslationUnit) {
1323 if (DC->getDeclKind() == Decl::LinkageSpec &&
1324 cast<LinkageSpecDecl>(DC)->getLanguage() == LinkageSpecLanguageIDs::C)
1325 return cast<LinkageSpecDecl>(DC);
1326 DC = DC->getLexicalParent();
1327 }
1328 return nullptr;
1329}
1330
1333}
1334
1335bool DeclContext::Encloses(const DeclContext *DC) const {
1336 if (getPrimaryContext() != this)
1337 return getPrimaryContext()->Encloses(DC);
1338
1339 for (; DC; DC = DC->getParent())
1340 if (!isa<LinkageSpecDecl>(DC) && !isa<ExportDecl>(DC) &&
1341 DC->getPrimaryContext() == this)
1342 return true;
1343 return false;
1344}
1345
1347 DeclContext *DC = this;
1348 while (DC->isTransparentContext()) {
1349 DC = DC->getParent();
1350 assert(DC && "All transparent contexts should have a parent!");
1351 }
1352 return DC;
1353}
1354
1356 switch (getDeclKind()) {
1357 case Decl::ExternCContext:
1358 case Decl::LinkageSpec:
1359 case Decl::Export:
1360 case Decl::TopLevelStmt:
1361 case Decl::Block:
1362 case Decl::Captured:
1363 case Decl::OMPDeclareReduction:
1364 case Decl::OMPDeclareMapper:
1365 case Decl::RequiresExprBody:
1366 // There is only one DeclContext for these entities.
1367 return this;
1368
1369 case Decl::HLSLBuffer:
1370 // Each buffer, even with the same name, is a distinct construct.
1371 // Multiple buffers with the same name are allowed for backward
1372 // compatibility.
1373 // As long as buffers have unique resource bindings the names don't matter.
1374 // The names get exposed via the CPU-side reflection API which
1375 // supports querying bindings, so we cannot remove them.
1376 return this;
1377
1378 case Decl::TranslationUnit:
1379 return static_cast<TranslationUnitDecl *>(this)->getFirstDecl();
1380 case Decl::Namespace:
1381 // The original namespace is our primary context.
1382 return static_cast<NamespaceDecl *>(this)->getOriginalNamespace();
1383
1384 case Decl::ObjCMethod:
1385 return this;
1386
1387 case Decl::ObjCInterface:
1388 if (auto *OID = dyn_cast<ObjCInterfaceDecl>(this))
1389 if (auto *Def = OID->getDefinition())
1390 return Def;
1391 return this;
1392
1393 case Decl::ObjCProtocol:
1394 if (auto *OPD = dyn_cast<ObjCProtocolDecl>(this))
1395 if (auto *Def = OPD->getDefinition())
1396 return Def;
1397 return this;
1398
1399 case Decl::ObjCCategory:
1400 return this;
1401
1402 case Decl::ObjCImplementation:
1403 case Decl::ObjCCategoryImpl:
1404 return this;
1405
1406 default:
1407 if (getDeclKind() >= Decl::firstTag && getDeclKind() <= Decl::lastTag) {
1408 // If this is a tag type that has a definition or is currently
1409 // being defined, that definition is our primary context.
1410 auto *Tag = cast<TagDecl>(this);
1411
1412 if (TagDecl *Def = Tag->getDefinition())
1413 return Def;
1414
1415 if (const auto *TagTy = dyn_cast<TagType>(Tag->getTypeForDecl())) {
1416 // Note, TagType::getDecl returns the (partial) definition one exists.
1417 TagDecl *PossiblePartialDef = TagTy->getDecl();
1418 if (PossiblePartialDef->isBeingDefined())
1419 return PossiblePartialDef;
1420 } else {
1421 assert(isa<InjectedClassNameType>(Tag->getTypeForDecl()));
1422 }
1423
1424 return Tag;
1425 }
1426
1427 assert(getDeclKind() >= Decl::firstFunction &&
1428 getDeclKind() <= Decl::lastFunction &&
1429 "Unknown DeclContext kind");
1430 return this;
1431 }
1432}
1433
1434template <typename T>
1436 for (T *D = Self->getMostRecentDecl(); D; D = D->getPreviousDecl())
1437 Contexts.push_back(D);
1438
1439 std::reverse(Contexts.begin(), Contexts.end());
1440}
1441
1443 Contexts.clear();
1444
1445 Decl::Kind Kind = getDeclKind();
1446
1447 if (Kind == Decl::TranslationUnit)
1448 collectAllContextsImpl(static_cast<TranslationUnitDecl *>(this), Contexts);
1449 else if (Kind == Decl::Namespace)
1450 collectAllContextsImpl(static_cast<NamespaceDecl *>(this), Contexts);
1451 else
1452 Contexts.push_back(this);
1453}
1454
1455std::pair<Decl *, Decl *>
1457 bool FieldsAlreadyLoaded) {
1458 // Build up a chain of declarations via the Decl::NextInContextAndBits field.
1459 Decl *FirstNewDecl = nullptr;
1460 Decl *PrevDecl = nullptr;
1461 for (auto *D : Decls) {
1462 if (FieldsAlreadyLoaded && isa<FieldDecl>(D))
1463 continue;
1464
1465 if (PrevDecl)
1466 PrevDecl->NextInContextAndBits.setPointer(D);
1467 else
1468 FirstNewDecl = D;
1469
1470 PrevDecl = D;
1471 }
1472
1473 return std::make_pair(FirstNewDecl, PrevDecl);
1474}
1475
1476/// We have just acquired external visible storage, and we already have
1477/// built a lookup map. For every name in the map, pull in the new names from
1478/// the external storage.
1479void DeclContext::reconcileExternalVisibleStorage() const {
1480 assert(hasNeedToReconcileExternalVisibleStorage() && LookupPtr);
1481 setNeedToReconcileExternalVisibleStorage(false);
1482
1483 for (auto &Lookup : *LookupPtr)
1484 Lookup.second.setHasExternalDecls();
1485}
1486
1487/// Load the declarations within this lexical storage from an
1488/// external source.
1489/// \return \c true if any declarations were added.
1490bool
1491DeclContext::LoadLexicalDeclsFromExternalStorage() const {
1493 assert(hasExternalLexicalStorage() && Source && "No external storage?");
1494
1495 // Notify that we have a DeclContext that is initializing.
1496 ExternalASTSource::Deserializing ADeclContext(Source);
1497
1498 // Load the external declarations, if any.
1501 Source->FindExternalLexicalDecls(this, Decls);
1502
1503 if (Decls.empty())
1504 return false;
1505
1506 // We may have already loaded just the fields of this record, in which case
1507 // we need to ignore them.
1508 bool FieldsAlreadyLoaded = false;
1509 if (const auto *RD = dyn_cast<RecordDecl>(this))
1510 FieldsAlreadyLoaded = RD->hasLoadedFieldsFromExternalStorage();
1511
1512 // Splice the newly-read declarations into the beginning of the list
1513 // of declarations.
1514 Decl *ExternalFirst, *ExternalLast;
1515 std::tie(ExternalFirst, ExternalLast) =
1516 BuildDeclChain(Decls, FieldsAlreadyLoaded);
1517 ExternalLast->NextInContextAndBits.setPointer(FirstDecl);
1518 FirstDecl = ExternalFirst;
1519 if (!LastDecl)
1520 LastDecl = ExternalLast;
1521 return true;
1522}
1523
1526 DeclarationName Name) {
1527 ASTContext &Context = DC->getParentASTContext();
1528 StoredDeclsMap *Map;
1529 if (!(Map = DC->LookupPtr))
1530 Map = DC->CreateStoredDeclsMap(Context);
1531 if (DC->hasNeedToReconcileExternalVisibleStorage())
1532 DC->reconcileExternalVisibleStorage();
1533
1534 (*Map)[Name].removeExternalDecls();
1535
1537}
1538
1541 DeclarationName Name,
1542 ArrayRef<NamedDecl*> Decls) {
1543 ASTContext &Context = DC->getParentASTContext();
1544 StoredDeclsMap *Map;
1545 if (!(Map = DC->LookupPtr))
1546 Map = DC->CreateStoredDeclsMap(Context);
1547 if (DC->hasNeedToReconcileExternalVisibleStorage())
1548 DC->reconcileExternalVisibleStorage();
1549
1550 StoredDeclsList &List = (*Map)[Name];
1551 List.replaceExternalDecls(Decls);
1552 return List.getLookupResult();
1553}
1554
1557 LoadLexicalDeclsFromExternalStorage();
1558 return decl_iterator(FirstDecl);
1559}
1560
1563 LoadLexicalDeclsFromExternalStorage();
1564
1565 return !FirstDecl;
1566}
1567
1569 return (D->getLexicalDeclContext() == this &&
1570 (D->NextInContextAndBits.getPointer() || D == LastDecl));
1571}
1572
1575 LoadLexicalDeclsFromExternalStorage();
1576 return containsDecl(D);
1577}
1578
1579/// shouldBeHidden - Determine whether a declaration which was declared
1580/// within its semantic context should be invisible to qualified name lookup.
1581static bool shouldBeHidden(NamedDecl *D) {
1582 // Skip unnamed declarations.
1583 if (!D->getDeclName())
1584 return true;
1585
1586 // Skip entities that can't be found by name lookup into a particular
1587 // context.
1588 if ((D->getIdentifierNamespace() == 0 && !isa<UsingDirectiveDecl>(D)) ||
1590 return true;
1591
1592 // Skip friends and local extern declarations unless they're the first
1593 // declaration of the entity.
1594 if ((D->isLocalExternDecl() || D->getFriendObjectKind()) &&
1595 D != D->getCanonicalDecl())
1596 return true;
1597
1598 // Skip template specializations.
1599 // FIXME: This feels like a hack. Should DeclarationName support
1600 // template-ids, or is there a better way to keep specializations
1601 // from being visible?
1602 if (isa<ClassTemplateSpecializationDecl>(D))
1603 return true;
1604 if (auto *FD = dyn_cast<FunctionDecl>(D))
1605 if (FD->isFunctionTemplateSpecialization())
1606 return true;
1607
1608 // Hide destructors that are invalid. There should always be one destructor,
1609 // but if it is an invalid decl, another one is created. We need to hide the
1610 // invalid one from places that expect exactly one destructor, like the
1611 // serialization code.
1612 if (isa<CXXDestructorDecl>(D) && D->isInvalidDecl())
1613 return true;
1614
1615 return false;
1616}
1617
1619 assert(D->getLexicalDeclContext() == this &&
1620 "decl being removed from non-lexical context");
1621 assert((D->NextInContextAndBits.getPointer() || D == LastDecl) &&
1622 "decl is not in decls list");
1623
1624 // Remove D from the decl chain. This is O(n) but hopefully rare.
1625 if (D == FirstDecl) {
1626 if (D == LastDecl)
1627 FirstDecl = LastDecl = nullptr;
1628 else
1629 FirstDecl = D->NextInContextAndBits.getPointer();
1630 } else {
1631 for (Decl *I = FirstDecl; true; I = I->NextInContextAndBits.getPointer()) {
1632 assert(I && "decl not found in linked list");
1633 if (I->NextInContextAndBits.getPointer() == D) {
1634 I->NextInContextAndBits.setPointer(D->NextInContextAndBits.getPointer());
1635 if (D == LastDecl) LastDecl = I;
1636 break;
1637 }
1638 }
1639 }
1640
1641 // Mark that D is no longer in the decl chain.
1642 D->NextInContextAndBits.setPointer(nullptr);
1643
1644 // Remove D from the lookup table if necessary.
1645 if (isa<NamedDecl>(D)) {
1646 auto *ND = cast<NamedDecl>(D);
1647
1648 // Do not try to remove the declaration if that is invisible to qualified
1649 // lookup. E.g. template specializations are skipped.
1650 if (shouldBeHidden(ND))
1651 return;
1652
1653 // Remove only decls that have a name
1654 if (!ND->getDeclName())
1655 return;
1656
1657 auto *DC = D->getDeclContext();
1658 do {
1659 StoredDeclsMap *Map = DC->getPrimaryContext()->LookupPtr;
1660 if (Map) {
1661 StoredDeclsMap::iterator Pos = Map->find(ND->getDeclName());
1662 assert(Pos != Map->end() && "no lookup entry for decl");
1663 StoredDeclsList &List = Pos->second;
1664 List.remove(ND);
1665 // Clean up the entry if there are no more decls.
1666 if (List.isNull())
1667 Map->erase(Pos);
1668 }
1669 } while (DC->isTransparentContext() && (DC = DC->getParent()));
1670 }
1671}
1672
1674 assert(D->getLexicalDeclContext() == this &&
1675 "Decl inserted into wrong lexical context");
1676 assert(!D->getNextDeclInContext() && D != LastDecl &&
1677 "Decl already inserted into a DeclContext");
1678
1679 if (FirstDecl) {
1680 LastDecl->NextInContextAndBits.setPointer(D);
1681 LastDecl = D;
1682 } else {
1683 FirstDecl = LastDecl = D;
1684 }
1685
1686 // Notify a C++ record declaration that we've added a member, so it can
1687 // update its class-specific state.
1688 if (auto *Record = dyn_cast<CXXRecordDecl>(this))
1689 Record->addedMember(D);
1690
1691 // If this is a newly-created (not de-serialized) import declaration, wire
1692 // it in to the list of local import declarations.
1693 if (!D->isFromASTFile()) {
1694 if (auto *Import = dyn_cast<ImportDecl>(D))
1696 }
1697}
1698
1700 addHiddenDecl(D);
1701
1702 if (auto *ND = dyn_cast<NamedDecl>(D))
1703 ND->getDeclContext()->getPrimaryContext()->
1704 makeDeclVisibleInContextWithFlags(ND, false, true);
1705}
1706
1708 addHiddenDecl(D);
1709
1710 if (auto *ND = dyn_cast<NamedDecl>(D))
1711 ND->getDeclContext()->getPrimaryContext()->
1712 makeDeclVisibleInContextWithFlags(ND, true, true);
1713}
1714
1715/// buildLookup - Build the lookup data structure with all of the
1716/// declarations in this DeclContext (and any other contexts linked
1717/// to it or transparent contexts nested within it) and return it.
1718///
1719/// Note that the produced map may miss out declarations from an
1720/// external source. If it does, those entries will be marked with
1721/// the 'hasExternalDecls' flag.
1723 assert(this == getPrimaryContext() && "buildLookup called on non-primary DC");
1724
1725 if (!hasLazyLocalLexicalLookups() &&
1726 !hasLazyExternalLexicalLookups())
1727 return LookupPtr;
1728
1730 collectAllContexts(Contexts);
1731
1732 if (hasLazyExternalLexicalLookups()) {
1733 setHasLazyExternalLexicalLookups(false);
1734 for (auto *DC : Contexts) {
1735 if (DC->hasExternalLexicalStorage()) {
1736 bool LoadedDecls = DC->LoadLexicalDeclsFromExternalStorage();
1737 setHasLazyLocalLexicalLookups(
1738 hasLazyLocalLexicalLookups() | LoadedDecls );
1739 }
1740 }
1741
1742 if (!hasLazyLocalLexicalLookups())
1743 return LookupPtr;
1744 }
1745
1746 for (auto *DC : Contexts)
1747 buildLookupImpl(DC, hasExternalVisibleStorage());
1748
1749 // We no longer have any lazy decls.
1750 setHasLazyLocalLexicalLookups(false);
1751 return LookupPtr;
1752}
1753
1754/// buildLookupImpl - Build part of the lookup data structure for the
1755/// declarations contained within DCtx, which will either be this
1756/// DeclContext, a DeclContext linked to it, or a transparent context
1757/// nested within it.
1758void DeclContext::buildLookupImpl(DeclContext *DCtx, bool Internal) {
1759 for (auto *D : DCtx->noload_decls()) {
1760 // Insert this declaration into the lookup structure, but only if
1761 // it's semantically within its decl context. Any other decls which
1762 // should be found in this context are added eagerly.
1763 //
1764 // If it's from an AST file, don't add it now. It'll get handled by
1765 // FindExternalVisibleDeclsByName if needed. Exception: if we're not
1766 // in C++, we do not track external visible decls for the TU, so in
1767 // that case we need to collect them all here.
1768 if (auto *ND = dyn_cast<NamedDecl>(D))
1769 if (ND->getDeclContext() == DCtx && !shouldBeHidden(ND) &&
1770 (!ND->isFromASTFile() ||
1771 (isTranslationUnit() &&
1772 !getParentASTContext().getLangOpts().CPlusPlus)))
1773 makeDeclVisibleInContextImpl(ND, Internal);
1774
1775 // If this declaration is itself a transparent declaration context
1776 // or inline namespace, add the members of this declaration of that
1777 // context (recursively).
1778 if (auto *InnerCtx = dyn_cast<DeclContext>(D))
1779 if (InnerCtx->isTransparentContext() || InnerCtx->isInlineNamespace())
1780 buildLookupImpl(InnerCtx, Internal);
1781 }
1782}
1783
1786 // For transparent DeclContext, we should lookup in their enclosing context.
1787 if (getDeclKind() == Decl::LinkageSpec || getDeclKind() == Decl::Export)
1788 return getParent()->lookup(Name);
1789
1790 const DeclContext *PrimaryContext = getPrimaryContext();
1791 if (PrimaryContext != this)
1792 return PrimaryContext->lookup(Name);
1793
1794 // If we have an external source, ensure that any later redeclarations of this
1795 // context have been loaded, since they may add names to the result of this
1796 // lookup (or add external visible storage).
1798 if (Source)
1799 (void)cast<Decl>(this)->getMostRecentDecl();
1800
1802 assert(Source && "external visible storage but no external source?");
1803
1804 if (hasNeedToReconcileExternalVisibleStorage())
1805 reconcileExternalVisibleStorage();
1806
1807 StoredDeclsMap *Map = LookupPtr;
1808
1809 if (hasLazyLocalLexicalLookups() ||
1810 hasLazyExternalLexicalLookups())
1811 // FIXME: Make buildLookup const?
1812 Map = const_cast<DeclContext*>(this)->buildLookup();
1813
1814 if (!Map)
1815 Map = CreateStoredDeclsMap(getParentASTContext());
1816
1817 // If we have a lookup result with no external decls, we are done.
1818 std::pair<StoredDeclsMap::iterator, bool> R =
1819 Map->insert(std::make_pair(Name, StoredDeclsList()));
1820 if (!R.second && !R.first->second.hasExternalDecls())
1821 return R.first->second.getLookupResult();
1822
1823 if (Source->FindExternalVisibleDeclsByName(this, Name) || !R.second) {
1824 if (StoredDeclsMap *Map = LookupPtr) {
1825 StoredDeclsMap::iterator I = Map->find(Name);
1826 if (I != Map->end())
1827 return I->second.getLookupResult();
1828 }
1829 }
1830
1831 return {};
1832 }
1833
1834 StoredDeclsMap *Map = LookupPtr;
1835 if (hasLazyLocalLexicalLookups() ||
1836 hasLazyExternalLexicalLookups())
1837 Map = const_cast<DeclContext*>(this)->buildLookup();
1838
1839 if (!Map)
1840 return {};
1841
1842 StoredDeclsMap::iterator I = Map->find(Name);
1843 if (I == Map->end())
1844 return {};
1845
1846 return I->second.getLookupResult();
1847}
1848
1851 assert(getDeclKind() != Decl::LinkageSpec &&
1852 getDeclKind() != Decl::Export &&
1853 "should not perform lookups into transparent contexts");
1854
1855 DeclContext *PrimaryContext = getPrimaryContext();
1856 if (PrimaryContext != this)
1857 return PrimaryContext->noload_lookup(Name);
1858
1859 loadLazyLocalLexicalLookups();
1860 StoredDeclsMap *Map = LookupPtr;
1861 if (!Map)
1862 return {};
1863
1864 StoredDeclsMap::iterator I = Map->find(Name);
1865 return I != Map->end() ? I->second.getLookupResult()
1866 : lookup_result();
1867}
1868
1869// If we have any lazy lexical declarations not in our lookup map, add them
1870// now. Don't import any external declarations, not even if we know we have
1871// some missing from the external visible lookups.
1872void DeclContext::loadLazyLocalLexicalLookups() {
1873 if (hasLazyLocalLexicalLookups()) {
1875 collectAllContexts(Contexts);
1876 for (auto *Context : Contexts)
1877 buildLookupImpl(Context, hasExternalVisibleStorage());
1878 setHasLazyLocalLexicalLookups(false);
1879 }
1880}
1881
1884 Results.clear();
1885
1886 // If there's no external storage, just perform a normal lookup and copy
1887 // the results.
1889 lookup_result LookupResults = lookup(Name);
1890 Results.insert(Results.end(), LookupResults.begin(), LookupResults.end());
1891 if (!Results.empty())
1892 return;
1893 }
1894
1895 // If we have a lookup table, check there first. Maybe we'll get lucky.
1896 // FIXME: Should we be checking these flags on the primary context?
1897 if (Name && !hasLazyLocalLexicalLookups() &&
1898 !hasLazyExternalLexicalLookups()) {
1899 if (StoredDeclsMap *Map = LookupPtr) {
1900 StoredDeclsMap::iterator Pos = Map->find(Name);
1901 if (Pos != Map->end()) {
1902 Results.insert(Results.end(),
1903 Pos->second.getLookupResult().begin(),
1904 Pos->second.getLookupResult().end());
1905 return;
1906 }
1907 }
1908 }
1909
1910 // Slow case: grovel through the declarations in our chain looking for
1911 // matches.
1912 // FIXME: If we have lazy external declarations, this will not find them!
1913 // FIXME: Should we CollectAllContexts and walk them all here?
1914 for (Decl *D = FirstDecl; D; D = D->getNextDeclInContext()) {
1915 if (auto *ND = dyn_cast<NamedDecl>(D))
1916 if (ND->getDeclName() == Name)
1917 Results.push_back(ND);
1918 }
1919}
1920
1922 DeclContext *Ctx = this;
1923
1924 // In C, a record type is the redeclaration context for its fields only. If
1925 // we arrive at a record context after skipping anything else, we should skip
1926 // the record as well. Currently, this means skipping enumerations because
1927 // they're the only transparent context that can exist within a struct or
1928 // union.
1929 bool SkipRecords = getDeclKind() == Decl::Kind::Enum &&
1930 !getParentASTContext().getLangOpts().CPlusPlus;
1931
1932 // Skip through contexts to get to the redeclaration context. Transparent
1933 // contexts are always skipped.
1934 while ((SkipRecords && Ctx->isRecord()) || Ctx->isTransparentContext())
1935 Ctx = Ctx->getParent();
1936 return Ctx;
1937}
1938
1940 DeclContext *Ctx = this;
1941 // Skip through non-namespace, non-translation-unit contexts.
1942 while (!Ctx->isFileContext())
1943 Ctx = Ctx->getParent();
1944 return Ctx->getPrimaryContext();
1945}
1946
1948 // Loop until we find a non-record context.
1949 RecordDecl *OutermostRD = nullptr;
1950 DeclContext *DC = this;
1951 while (DC->isRecord()) {
1952 OutermostRD = cast<RecordDecl>(DC);
1953 DC = DC->getLexicalParent();
1954 }
1955 return OutermostRD;
1956}
1957
1959 // For non-file contexts, this is equivalent to Equals.
1960 if (!isFileContext())
1961 return O->Equals(this);
1962
1963 do {
1964 if (O->Equals(this))
1965 return true;
1966
1967 const auto *NS = dyn_cast<NamespaceDecl>(O);
1968 if (!NS || !NS->isInline())
1969 break;
1970 O = NS->getParent();
1971 } while (O);
1972
1973 return false;
1974}
1975
1977 DeclContext *PrimaryDC = this->getPrimaryContext();
1979 // If the decl is being added outside of its semantic decl context, we
1980 // need to ensure that we eagerly build the lookup information for it.
1981 PrimaryDC->makeDeclVisibleInContextWithFlags(D, false, PrimaryDC == DeclDC);
1982}
1983
1984void DeclContext::makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
1985 bool Recoverable) {
1986 assert(this == getPrimaryContext() && "expected a primary DC");
1987
1988 if (!isLookupContext()) {
1991 ->makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
1992 return;
1993 }
1994
1995 // Skip declarations which should be invisible to name lookup.
1996 if (shouldBeHidden(D))
1997 return;
1998
1999 // If we already have a lookup data structure, perform the insertion into
2000 // it. If we might have externally-stored decls with this name, look them
2001 // up and perform the insertion. If this decl was declared outside its
2002 // semantic context, buildLookup won't add it, so add it now.
2003 //
2004 // FIXME: As a performance hack, don't add such decls into the translation
2005 // unit unless we're in C++, since qualified lookup into the TU is never
2006 // performed.
2007 if (LookupPtr || hasExternalVisibleStorage() ||
2008 ((!Recoverable || D->getDeclContext() != D->getLexicalDeclContext()) &&
2009 (getParentASTContext().getLangOpts().CPlusPlus ||
2010 !isTranslationUnit()))) {
2011 // If we have lazily omitted any decls, they might have the same name as
2012 // the decl which we are adding, so build a full lookup table before adding
2013 // this decl.
2014 buildLookup();
2015 makeDeclVisibleInContextImpl(D, Internal);
2016 } else {
2017 setHasLazyLocalLexicalLookups(true);
2018 }
2019
2020 // If we are a transparent context or inline namespace, insert into our
2021 // parent context, too. This operation is recursive.
2024 makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
2025
2026 auto *DCAsDecl = cast<Decl>(this);
2027 // Notify that a decl was made visible unless we are a Tag being defined.
2028 if (!(isa<TagDecl>(DCAsDecl) && cast<TagDecl>(DCAsDecl)->isBeingDefined()))
2029 if (ASTMutationListener *L = DCAsDecl->getASTMutationListener())
2030 L->AddedVisibleDecl(this, D);
2031}
2032
2033void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
2034 // Find or create the stored declaration map.
2035 StoredDeclsMap *Map = LookupPtr;
2036 if (!Map) {
2038 Map = CreateStoredDeclsMap(*C);
2039 }
2040
2041 // If there is an external AST source, load any declarations it knows about
2042 // with this declaration's name.
2043 // If the lookup table contains an entry about this name it means that we
2044 // have already checked the external source.
2045 if (!Internal)
2046 if (ExternalASTSource *Source = getParentASTContext().getExternalSource())
2048 Map->find(D->getDeclName()) == Map->end())
2049 Source->FindExternalVisibleDeclsByName(this, D->getDeclName());
2050
2051 // Insert this declaration into the map.
2052 StoredDeclsList &DeclNameEntries = (*Map)[D->getDeclName()];
2053
2054 if (Internal) {
2055 // If this is being added as part of loading an external declaration,
2056 // this may not be the only external declaration with this name.
2057 // In this case, we never try to replace an existing declaration; we'll
2058 // handle that when we finalize the list of declarations for this name.
2059 DeclNameEntries.setHasExternalDecls();
2060 DeclNameEntries.prependDeclNoReplace(D);
2061 return;
2062 }
2063
2064 DeclNameEntries.addOrReplaceDecl(D);
2065}
2066
2068 return cast<UsingDirectiveDecl>(*I);
2069}
2070
2071/// Returns iterator range [First, Last) of UsingDirectiveDecls stored within
2072/// this context.
2074 // FIXME: Use something more efficient than normal lookup for using
2075 // directives. In C++, using directives are looked up more than anything else.
2076 lookup_result Result = lookup(UsingDirectiveDecl::getName());
2077 return udir_range(Result.begin(), Result.end());
2078}
2079
2080//===----------------------------------------------------------------------===//
2081// Creation and Destruction of StoredDeclsMaps. //
2082//===----------------------------------------------------------------------===//
2083
2084StoredDeclsMap *DeclContext::CreateStoredDeclsMap(ASTContext &C) const {
2085 assert(!LookupPtr && "context already has a decls map");
2086 assert(getPrimaryContext() == this &&
2087 "creating decls map on non-primary context");
2088
2089 StoredDeclsMap *M;
2090 bool Dependent = isDependentContext();
2091 if (Dependent)
2092 M = new DependentStoredDeclsMap();
2093 else
2094 M = new StoredDeclsMap();
2095 M->Previous = C.LastSDM;
2096 C.LastSDM = llvm::PointerIntPair<StoredDeclsMap*,1>(M, Dependent);
2097 LookupPtr = M;
2098 return M;
2099}
2100
2101void ASTContext::ReleaseDeclContextMaps() {
2102 // It's okay to delete DependentStoredDeclsMaps via a StoredDeclsMap
2103 // pointer because the subclass doesn't add anything that needs to
2104 // be deleted.
2105 StoredDeclsMap::DestroyAll(LastSDM.getPointer(), LastSDM.getInt());
2106 LastSDM.setPointer(nullptr);
2107}
2108
2109void StoredDeclsMap::DestroyAll(StoredDeclsMap *Map, bool Dependent) {
2110 while (Map) {
2111 // Advance the iteration before we invalidate memory.
2112 llvm::PointerIntPair<StoredDeclsMap*,1> Next = Map->Previous;
2113
2114 if (Dependent)
2115 delete static_cast<DependentStoredDeclsMap*>(Map);
2116 else
2117 delete Map;
2118
2119 Map = Next.getPointer();
2120 Dependent = Next.getInt();
2121 }
2122}
2123
2126 const PartialDiagnostic &PDiag) {
2127 assert(Parent->isDependentContext()
2128 && "cannot iterate dependent diagnostics of non-dependent context");
2129 Parent = Parent->getPrimaryContext();
2130 if (!Parent->LookupPtr)
2131 Parent->CreateStoredDeclsMap(C);
2132
2133 auto *Map = static_cast<DependentStoredDeclsMap *>(Parent->LookupPtr);
2134
2135 // Allocate the copy of the PartialDiagnostic via the ASTContext's
2136 // BumpPtrAllocator, rather than the ASTContext itself.
2137 DiagnosticStorage *DiagStorage = nullptr;
2138 if (PDiag.hasStorage())
2139 DiagStorage = new (C) DiagnosticStorage;
2140
2141 auto *DD = new (C) DependentDiagnostic(PDiag, DiagStorage);
2142
2143 // TODO: Maybe we shouldn't reverse the order during insertion.
2144 DD->NextDiagnostic = Map->FirstDiagnostic;
2145 Map->FirstDiagnostic = DD;
2146
2147 return DD;
2148}
Defines the clang::ASTContext interface.
#define V(N, I)
Definition: ASTContext.h:3259
NodeId Parent
Definition: ASTDiff.cpp:191
This file provides some common utility functions for processing Lambda related AST Constructs.
static bool shouldBeHidden(NamedDecl *D)
shouldBeHidden - Determine whether a declaration which was declared within its semantic context shoul...
Definition: DeclBase.cpp:1581
static bool isLinkageSpecContext(const DeclContext *DC, LinkageSpecLanguageIDs ID)
Definition: DeclBase.cpp:1306
static Decl::Kind getKind(const Decl *D)
Definition: DeclBase.cpp:1110
static Decl * getNonClosureContext(T *D)
Starting at a given context (a Decl or DeclContext), look for a code context that is not a closure (a...
Definition: DeclBase.cpp:1155
static AvailabilityResult CheckAvailability(ASTContext &Context, const AvailabilityAttr *A, std::string *Message, VersionTuple EnclosingVersion)
Determine the availability of the given declaration based on the target platform.
Definition: DeclBase.cpp:625
void collectAllContextsImpl(T *Self, SmallVectorImpl< DeclContext * > &Contexts)
Definition: DeclBase.cpp:1435
static StringRef getRealizedPlatform(const AvailabilityAttr *A, const ASTContext &Context)
Definition: DeclBase.cpp:603
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate....
This file defines OpenMP nodes for declarative directives.
Defines the C++ template declaration subclasses.
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified.
llvm::MachO::Record Record
Definition: MachO.h:28
Defines the clang::Module class, which describes a module in the source code.
Defines types useful for describing an Objective-C runtime.
Implements a partial diagnostic that can be emitted anwyhere in a DiagnosticBuilder stream.
Defines the clang::SourceLocation class and associated facilities.
C Language Family Type Representation.
std::string Label
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:182
const ConstantArrayType * getAsConstantArrayType(QualType T) const
Definition: ASTContext.h:2742
ASTMutationListener * getASTMutationListener() const
Retrieve a pointer to the AST mutation listener associated with this AST context, if any.
Definition: ASTContext.h:1197
const IncompleteArrayType * getAsIncompleteArrayType(QualType T) const
Definition: ASTContext.h:2748
const LangOptions & getLangOpts() const
Definition: ASTContext.h:770
llvm::BumpPtrAllocator & getAllocator() const
Definition: ASTContext.h:709
void eraseDeclAttrs(const Decl *D)
Erase the attributes corresponding to the given declaration.
void addedLocalImportDecl(ImportDecl *Import)
Notify the AST context that a new import declaration has been parsed or implicitly created within thi...
void * Allocate(size_t Size, unsigned Align=8) const
Definition: ASTContext.h:713
const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:752
ExternalASTSource * getExternalSource() const
Retrieve a pointer to the external AST source associated with this AST context, if any.
Definition: ASTContext.h:1182
Module * getCurrentNamedModule() const
Get module under construction, nullptr if this is not a C++20 module.
Definition: ASTContext.h:1066
AttrVec & getDeclAttrs(const Decl *D)
Retrieve the attributes for the given declaration.
An abstract interface that should be implemented by listeners that want to be notified when an AST en...
Attr - This represents one attribute.
Definition: Attr.h:42
bool isInherited() const
Definition: Attr.h:97
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:4459
Pointer to a block type.
Definition: Type.h:2978
The results of name lookup within a DeclContext.
Definition: DeclBase.h:1379
decl_iterator - Iterates through the declarations stored within this context.
Definition: DeclBase.h:2289
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext,...
Definition: DeclBase.h:2352
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1446
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:2076
udir_range using_directives() const
Returns iterator range [First, Last) of UsingDirectiveDecls stored within this context.
Definition: DeclBase.cpp:2073
bool Equals(const DeclContext *DC) const
Determine whether this declaration context is equivalent to the declaration context DC.
Definition: DeclBase.h:2201
bool isFileContext() const
Definition: DeclBase.h:2147
void setHasExternalVisibleStorage(bool ES=true) const
State whether this DeclContext has external storage for declarations visible in this context.
Definition: DeclBase.h:2665
void makeDeclVisibleInContext(NamedDecl *D)
Makes a declaration visible within this context.
Definition: DeclBase.cpp:1976
DeclContextLookupResult lookup_result
Definition: DeclBase.h:2536
static std::pair< Decl *, Decl * > BuildDeclChain(ArrayRef< Decl * > Decls, bool FieldsAlreadyLoaded)
Build up a chain of declarations.
Definition: DeclBase.cpp:1456
bool isTransparentContext() const
isTransparentContext - Determines whether this context is a "transparent" context,...
Definition: DeclBase.cpp:1299
Decl * getNonClosureAncestor()
Find the nearest non-closure ancestor of this context, i.e.
Definition: DeclBase.cpp:1178
ASTContext & getParentASTContext() const
Definition: DeclBase.h:2105
bool isExternCXXContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1331
bool isDependentContext() const
Determines whether this context is dependent on a template parameter.
Definition: DeclBase.cpp:1265
bool InEnclosingNamespaceSetOf(const DeclContext *NS) const
Test if this context is part of the enclosing namespace set of the context NS, as defined in C++0x [n...
Definition: DeclBase.cpp:1958
bool isClosure() const
Definition: DeclBase.h:2109
DeclContext * getLexicalParent()
getLexicalParent - Returns the containing lexical DeclContext.
Definition: DeclBase.h:2092
bool isNamespace() const
Definition: DeclBase.h:2161
lookup_result lookup(DeclarationName Name) const
lookup - Find the declarations (if any) with the given Name in this context.
Definition: DeclBase.cpp:1785
bool isLookupContext() const
Test whether the context supports looking up names.
Definition: DeclBase.h:2142
const BlockDecl * getInnermostBlockDecl() const
Return this DeclContext if it is a BlockDecl.
Definition: DeclBase.cpp:1232
bool hasExternalVisibleStorage() const
Whether this DeclContext has external storage containing additional declarations that are visible in ...
Definition: DeclBase.h:2659
const char * getDeclKindName() const
Definition: DeclBase.cpp:164
bool isTranslationUnit() const
Definition: DeclBase.h:2152
bool isRecord() const
Definition: DeclBase.h:2156
void collectAllContexts(SmallVectorImpl< DeclContext * > &Contexts)
Collects all of the declaration contexts that are semantically connected to this declaration context.
Definition: DeclBase.cpp:1442
DeclContext * getRedeclContext()
getRedeclContext - Retrieve the context in which an entity conflicts with other entities of the same ...
Definition: DeclBase.cpp:1921
llvm::iterator_range< udir_iterator > udir_range
Definition: DeclBase.h:2613
Decl * FirstDecl
FirstDecl - The first declaration stored within this declaration context.
Definition: DeclBase.h:2046
DeclContext(Decl::Kind K)
Definition: DeclBase.cpp:1186
void addDeclInternal(Decl *D)
Add the declaration D into this context, but suppress searches for external declarations with the sam...
Definition: DeclBase.cpp:1707
bool containsDeclAndLoad(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1573
void removeDecl(Decl *D)
Removes a declaration from this context.
Definition: DeclBase.cpp:1618
void addDecl(Decl *D)
Add the declaration D into this context.
Definition: DeclBase.cpp:1699
StoredDeclsMap * buildLookup()
Ensure the lookup structure is fully-built and return it.
Definition: DeclBase.cpp:1722
bool hasValidDeclKind() const
Definition: DeclBase.cpp:155
bool isStdNamespace() const
Definition: DeclBase.cpp:1249
lookup_result noload_lookup(DeclarationName Name)
Find the declarations with the given name that are visible within this context; don't attempt to retr...
Definition: DeclBase.cpp:1850
static bool classof(const Decl *D)
Definition: DeclBase.cpp:1196
bool containsDecl(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1568
bool hasExternalLexicalStorage() const
Whether this DeclContext has external storage containing additional declarations that are lexically i...
Definition: DeclBase.h:2647
void setUseQualifiedLookup(bool use=true) const
Definition: DeclBase.h:2678
DeclContext * getEnclosingNamespaceContext()
Retrieve the nearest enclosing namespace context.
Definition: DeclBase.cpp:1939
Decl * LastDecl
LastDecl - The last declaration stored within this declaration context.
Definition: DeclBase.h:2052
decl_range noload_decls() const
noload_decls_begin/end - Iterate over the declarations stored in this context that are currently load...
Definition: DeclBase.h:2340
friend class DependentDiagnostic
For CreateStoredDeclsMap.
Definition: DeclBase.h:1455
DeclContext * getPrimaryContext()
getPrimaryContext - There may be many different declarations of the same entity (including forward de...
Definition: DeclBase.cpp:1355
RecordDecl * getOuterLexicalRecordContext()
Retrieve the outermost lexically enclosing record context.
Definition: DeclBase.cpp:1947
bool decls_empty() const
Definition: DeclBase.cpp:1561
bool isInlineNamespace() const
Definition: DeclBase.cpp:1244
DeclContextBitfields DeclContextBits
Definition: DeclBase.h:2008
bool isFunctionOrMethod() const
Definition: DeclBase.h:2128
void setHasExternalLexicalStorage(bool ES=true) const
State whether this DeclContext has external storage for declarations lexically in this context.
Definition: DeclBase.h:2653
DeclContext * getLookupParent()
Find the parent context of this context that will be used for unqualified name lookup.
Definition: DeclBase.cpp:1216
bool isExternCContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1316
const LinkageSpecDecl * getExternCContext() const
Retrieve the nearest enclosing C linkage specification context.
Definition: DeclBase.cpp:1320
bool Encloses(const DeclContext *DC) const
Determine whether this declaration context encloses the declaration context DC.
Definition: DeclBase.cpp:1335
void addHiddenDecl(Decl *D)
Add the declaration D to this context without modifying any lookup tables.
Definition: DeclBase.cpp:1673
void localUncachedLookup(DeclarationName Name, SmallVectorImpl< NamedDecl * > &Results)
A simplistic name lookup mechanism that performs name lookup into this declaration context without co...
Definition: DeclBase.cpp:1882
Decl::Kind getDeclKind() const
Definition: DeclBase.h:2069
DeclContext * getNonTransparentContext()
Definition: DeclBase.cpp:1346
decl_iterator decls_begin() const
Definition: DeclBase.cpp:1555
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:85
Decl * getMostRecentDecl()
Retrieve the most recent declaration that declares the same entity as this declaration (which may be ...
Definition: DeclBase.h:1076
const DeclContext * getParentFunctionOrMethod(bool LexicalParent=false) const
If this decl is defined inside a function/method/block it returns the corresponding DeclContext,...
Definition: DeclBase.cpp:295
bool isInStdNamespace() const
Definition: DeclBase.cpp:403
TemplateDecl * getDescribedTemplate() const
If this is a declaration that describes some template, this method returns that template declaration.
Definition: DeclBase.cpp:239
unsigned getOwningModuleID() const
Retrieve the global ID of the module that owns this particular declaration.
Definition: DeclBase.h:798
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:235
static void add(Kind k)
Definition: DeclBase.cpp:202
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so,...
Definition: DeclBase.h:1226
bool hasAttrs() const
Definition: DeclBase.h:523
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:501
void addAttr(Attr *A)
Definition: DeclBase.cpp:975
void setAttrs(const AttrVec &Attrs)
Definition: DeclBase.h:525
bool hasLocalOwningModuleStorage() const
Definition: DeclBase.cpp:119
bool isFunctionPointerType() const
Definition: DeclBase.cpp:1136
virtual ~Decl()
ExternalSourceSymbolAttr * getExternalSourceSymbolAttr() const
Looks on this and related declarations for an applicable external source symbol attribute.
Definition: DeclBase.cpp:567
bool isWeakImported() const
Determine whether this is a weak-imported symbol.
Definition: DeclBase.cpp:804
ModuleOwnershipKind getModuleOwnershipKind() const
Get the kind of module ownership for this declaration.
Definition: DeclBase.h:876
bool isParameterPack() const
Whether this declaration is a parameter pack.
Definition: DeclBase.cpp:220
ASTMutationListener * getASTMutationListener() const
Definition: DeclBase.cpp:511
unsigned getMaxAlignment() const
getMaxAlignment - return the maximum alignment specified by attributes on this decl,...
Definition: DeclBase.cpp:515
AvailabilityResult getAvailability(std::string *Message=nullptr, VersionTuple EnclosingVersion=VersionTuple(), StringRef *RealizedPlatform=nullptr) const
Determine the availability of the given declaration.
Definition: DeclBase.cpp:709
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
Kind
Lists the kind of concrete classes of Decl.
Definition: DeclBase.h:88
static unsigned getIdentifierNamespaceForKind(Kind DK)
Definition: DeclBase.cpp:823
virtual Stmt * getBody() const
getBody - If this Decl represents a declaration for a body of code, such as a function or method defi...
Definition: DeclBase.h:1087
void markUsed(ASTContext &C)
Mark the declaration used, in the sense of odr-use.
Definition: DeclBase.cpp:545
bool isFileContextDecl() const
Definition: DeclBase.cpp:408
static Decl * castFromDeclContext(const DeclContext *)
Definition: DeclBase.cpp:1003
Decl * getNextDeclInContext()
Definition: DeclBase.h:450
bool isTemplated() const
Determine whether this declaration is a templated entity (whether it is.
Definition: DeclBase.cpp:262
bool isInExportDeclContext() const
Whether this declaration was exported in a lexical context.
Definition: DeclBase.cpp:1074
SourceLocation getBodyRBrace() const
getBodyRBrace - Gets the right brace of the body, if a body exists.
Definition: DeclBase.cpp:1029
int64_t getID() const
Definition: DeclBase.cpp:1113
bool isReferenced() const
Whether any declaration of this entity was referenced.
Definition: DeclBase.cpp:555
const FunctionType * getFunctionType(bool BlocksToo=true) const
Looks through the Decl's underlying type to extract a FunctionType when possible.
Definition: DeclBase.cpp:1117
bool isInAnotherModuleUnit() const
Whether this declaration comes from another module unit.
Definition: DeclBase.cpp:1083
llvm::PointerIntPair< Decl *, 3, ModuleOwnershipKind > NextInContextAndBits
The next declaration within the same lexical DeclContext.
Definition: DeclBase.h:248
Module * getOwningModule() const
Get the module that owns this declaration (for visibility purposes).
Definition: DeclBase.h:843
unsigned getTemplateDepth() const
Determine the number of levels of template parameter surrounding this declaration.
Definition: DeclBase.cpp:274
FunctionDecl * getAsFunction() LLVM_READONLY
Returns the function itself, or the templated function if this is a function template.
Definition: DeclBase.cpp:227
bool canBeWeakImported(bool &IsDefinition) const
Determines whether this symbol can be weak-imported, e.g., whether it would be well-formed to add the...
Definition: DeclBase.cpp:775
void dropAttrs()
Definition: DeclBase.cpp:968
static DeclContext * castToDeclContext(const Decl *)
Definition: DeclBase.cpp:1016
const TemplateParameterList * getDescribedTemplateParams() const
If this is a declaration that describes some template or partial specialization, this returns the cor...
Definition: DeclBase.cpp:252
bool isFromASTFile() const
Determine whether this declaration came from an AST file (such as a precompiled header or module) rat...
Definition: DeclBase.h:786
bool isInLocalScopeForInstantiation() const
Determine whether a substitution into this declaration would occur as part of a substitution into a d...
Definition: DeclBase.cpp:376
const Attr * getDefiningAttr() const
Return this declaration's defining attribute if it has one.
Definition: DeclBase.cpp:593
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:2749
DeclContext * getNonTransparentDeclContext()
Return the non transparent context.
Definition: DeclBase.cpp:1148
Decl * getNonClosureContext()
Find the innermost non-closure ancestor of this declaration, walking up through blocks,...
Definition: DeclBase.cpp:1174
bool isInvalidDecl() const
Definition: DeclBase.h:593
unsigned getIdentifierNamespace() const
Definition: DeclBase.h:889
bool hasDefiningAttr() const
Return true if this declaration has an attribute which acts as definition of the entity,...
Definition: DeclBase.cpp:588
bool isLocalExternDecl() const
Determine whether this is a block-scope declaration with linkage.
Definition: DeclBase.h:1169
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:507
SourceLocation getLocation() const
Definition: DeclBase.h:444
bool shouldSkipCheckingODR() const
Check if we should skip checking ODRHash for declaration.
Definition: DeclBase.cpp:1105
const char * getDeclKindName() const
Definition: DeclBase.cpp:123
@ IDNS_Ordinary
Ordinary names.
Definition: DeclBase.h:143
@ IDNS_Type
Types, declared with 'struct foo', typedefs, etc.
Definition: DeclBase.h:129
@ IDNS_OMPReduction
This declaration is an OpenMP user defined reduction construction.
Definition: DeclBase.h:177
@ IDNS_Label
Labels, declared with 'x:' and referenced with 'goto x'.
Definition: DeclBase.h:116
@ IDNS_Member
Members, declared with object declarations within tag definitions.
Definition: DeclBase.h:135
@ IDNS_OMPMapper
This declaration is an OpenMP user defined mapper.
Definition: DeclBase.h:180
@ IDNS_ObjCProtocol
Objective C @protocol.
Definition: DeclBase.h:146
@ IDNS_Namespace
Namespaces, declared with 'namespace foo {}'.
Definition: DeclBase.h:139
@ IDNS_Using
This declaration is a using declaration.
Definition: DeclBase.h:162
@ IDNS_Tag
Tags, declared with 'struct foo;' and referenced with 'struct foo'.
Definition: DeclBase.h:124
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack.
Definition: DeclBase.cpp:210
void setLocalOwningModule(Module *M)
Definition: DeclBase.h:830
redecl_range redecls() const
Returns an iterator range for all the redeclarations of the same decl.
Definition: DeclBase.h:1049
void setIsUsed()
Set whether the declaration is used, in the sense of odr-use.
Definition: DeclBase.h:613
unsigned Access
Access - Used by C++ decls for the access specifier.
Definition: DeclBase.h:338
bool isUsed(bool CheckUsedAttr=true) const
Whether any (re-)declaration of the entity was used, meaning that a definition is required.
Definition: DeclBase.cpp:530
DeclContext * getDeclContext()
Definition: DeclBase.h:453
attr_range attrs() const
Definition: DeclBase.h:540
bool isInAnonymousNamespace() const
Definition: DeclBase.cpp:393
static void EnableStatistics()
Definition: DeclBase.cpp:174
TranslationUnitDecl * getTranslationUnitDecl()
Definition: DeclBase.cpp:486
VersionTuple getVersionIntroduced() const
Retrieve the version of the target platform in which this declaration was introduced.
Definition: DeclBase.cpp:761
bool hasOwningModule() const
Is this declaration owned by some module?
Definition: DeclBase.h:838
static void PrintStats()
Definition: DeclBase.cpp:178
void updateOutOfDate(IdentifierInfo &II) const
Update a potentially out-of-date declaration.
Definition: DeclBase.cpp:63
AttrVec & getAttrs()
Definition: DeclBase.h:529
static bool isFlexibleArrayMemberLike(ASTContext &Context, const Decl *D, QualType Ty, LangOptions::StrictFlexArraysLevelKind StrictFlexArraysLevel, bool IgnoreTemplateOrMacroSubstitution)
Whether it resembles a flexible array member.
Definition: DeclBase.cpp:413
void setDeclContext(DeclContext *DC)
setDeclContext - Set both the semantic and lexical DeclContext to DC.
Definition: DeclBase.cpp:336
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC).
Definition: DeclBase.h:918
void setLexicalDeclContext(DeclContext *DC)
Definition: DeclBase.cpp:340
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:978
@ VisibleWhenImported
This declaration has an owning module, and is visible when that module is imported.
Kind getKind() const
Definition: DeclBase.h:447
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:881
const LangOptions & getLangOpts() const LLVM_READONLY
Helper to get the language options from the ASTContext.
Definition: DeclBase.cpp:507
The name of a declaration.
A dependently-generated diagnostic.
static DependentDiagnostic * Create(ASTContext &Context, DeclContext *Parent, AccessNonce _, SourceLocation Loc, bool IsMemberAccess, AccessSpecifier AS, NamedDecl *TargetDecl, CXXRecordDecl *NamingClass, QualType BaseObjectType, const PartialDiagnostic &PDiag)
This represents one expression.
Definition: Expr.h:110
SourceLocation getExprLoc() const LLVM_READONLY
getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic exp...
Definition: Expr.cpp:277
RAII class for safely pairing a StartedDeserializing call with FinishedDeserializing.
Abstract interface for external sources of AST nodes.
static DeclContextLookupResult SetExternalVisibleDeclsForName(const DeclContext *DC, DeclarationName Name, ArrayRef< NamedDecl * > Decls)
Definition: DeclBase.cpp:1540
static DeclContextLookupResult SetNoExternalVisibleDeclsForName(const DeclContext *DC, DeclarationName Name)
Definition: DeclBase.cpp:1525
virtual Module * getModule(unsigned ID)
Retrieve the module that corresponds to the given module ID.
virtual void updateOutOfDateIdentifier(IdentifierInfo &II)
Update an out-of-date identifier.
virtual bool FindExternalVisibleDeclsByName(const DeclContext *DC, DeclarationName Name)
Find all declarations with the given name in the given context, and add them to the context by callin...
virtual void FindExternalLexicalDecls(const DeclContext *DC, llvm::function_ref< bool(Decl::Kind)> IsKindWeWant, SmallVectorImpl< Decl * > &Result)
Finds all declarations lexically contained within the given DeclContext, after applying an optional f...
Represents a member of a struct/union/class.
Definition: Decl.h:3025
Represents a function declaration or definition.
Definition: Decl.h:1959
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3799
One of these records is kept for each identifier that is lexed.
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:418
bool trackLocalOwningModule() const
Do we need to track the owning module for a local declaration?
Definition: LangOptions.h:569
Represents a linkage specification.
Definition: DeclCXX.h:2927
Describes a module or submodule.
Definition: Module.h:105
bool isExplicitGlobalModule() const
Definition: Module.h:203
This represents a decl that may have a name.
Definition: Decl.h:249
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Definition: Decl.h:315
Represent a C++ namespace.
Definition: Decl.h:547
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:28
bool hasWeakClassImport() const
Does this runtime support weakly importing classes?
Definition: ObjCRuntime.h:378
PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:2898
void print(raw_ostream &OS) const override
Definition: DeclBase.cpp:309
A (possibly-)qualified type.
Definition: Type.h:737
QualType getCanonicalType() const
Definition: Type.h:6954
Represents a struct/union/class.
Definition: Decl.h:4133
Base for LValueReferenceType and RValueReferenceType.
Definition: Type.h:3009
Encodes a location in the source.
bool isValid() const
Return true if this is a valid SourceLocation object.
void print(raw_ostream &OS, const SourceManager &SM) const
Stmt - This represents one statement.
Definition: Stmt.h:84
An array of decls optimized for the common case of only containing one entry.
void addOrReplaceDecl(NamedDecl *D)
If this is a redeclaration of an existing decl, replace the old one with D.
void prependDeclNoReplace(NamedDecl *D)
Add a declaration to the list without checking if it replaces anything.
static void DestroyAll(StoredDeclsMap *Map, bool Dependent)
Definition: DeclBase.cpp:2109
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3549
bool isBeingDefined() const
Return true if this decl is currently being defined.
Definition: Decl.h:3672
TagDecl * getDefinition() const
Returns the TagDecl that actually defines this struct/union/class/enum.
Definition: Decl.cpp:4727
StringRef getPlatformName() const
Retrieve the name of the platform as it is used in the availability attribute.
Definition: TargetInfo.h:1608
VersionTuple getPlatformMinVersion() const
Retrieve the minimum desired version of the platform, to which the program should be compiled.
Definition: TargetInfo.h:1612
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:394
Stores a list of template parameters for a TemplateDecl and its derived classes.
Definition: DeclTemplate.h:73
The top declaration context.
Definition: Decl.h:84
ASTContext & getASTContext() const
Definition: Decl.h:120
Base wrapper for a particular "section" of type source info.
Definition: TypeLoc.h:59
T getAs() const
Convert to the specified TypeLoc type, returning a null TypeLoc if this TypeLoc is not of the desired...
Definition: TypeLoc.h:89
T getAsAdjusted() const
Convert to the specified TypeLoc type, returning a null TypeLoc if this TypeLoc is not of the desired...
Definition: TypeLoc.h:2653
A container of type source information.
Definition: Type.h:6873
TypeLoc getTypeLoc() const
Return the TypeLoc wrapper for the type source info.
Definition: TypeLoc.h:256
bool isBlockPointerType() const
Definition: Type.h:7162
bool isFunctionReferenceType() const
Definition: Type.h:7195
bool isFunctionPointerType() const
Definition: Type.h:7188
const T * castAs() const
Member-template castAs<specific type>.
Definition: Type.h:7724
const T * getAs() const
Member-template getAs<specific type>'.
Definition: Type.h:7657
Base class for declarations which introduce a typedef-name.
Definition: Decl.h:3399
TypeSourceInfo * getTypeSourceInfo() const
Definition: Decl.h:3449
Wrapper for source info for typedefs.
Definition: TypeLoc.h:693
Represents C++ using-directive.
Definition: DeclCXX.h:3008
specific_attr_iterator - Iterates over a subrange of an AttrVec, only providing attributes that are o...
Definition: AttrIterator.h:33
Defines the clang::TargetInfo interface.
const internal::VariadicAllOfMatcher< Attr > attr
Matches attributes.
The JSON file list parser is used to communicate input to InstallAPI.
@ Self
'self' clause, allowed on Compute and Combined Constructs, plus 'update'.
@ CPlusPlus
Definition: LangStandard.h:54
SmallVector< Attr *, 4 > AttrVec
AttrVec - A vector of Attr, which is how they are stored on the AST.
Definition: AttrIterator.h:28
LinkageSpecLanguageIDs
Represents the language in a linkage specification.
Definition: DeclCXX.h:2919
@ Internal
Internal linkage, which indicates that the entity can be referred to from within the translation unit...
bool isLambdaCallOperator(const CXXMethodDecl *MD)
Definition: ASTLambda.h:27
@ Result
The result type of a method or function.
AvailabilityResult
Captures the result of checking the availability of a declaration.
Definition: DeclBase.h:71
@ AR_NotYetIntroduced
Definition: DeclBase.h:73
@ AR_Available
Definition: DeclBase.h:72
@ AR_Deprecated
Definition: DeclBase.h:74
@ AR_Unavailable
Definition: DeclBase.h:75
@ Enum
The "enum" keyword introduces the elaborated-type-specifier.
@ AS_public
Definition: Specifiers.h:121
@ AS_none
Definition: Specifiers.h:124
UsingDirectiveDecl * operator*() const
Definition: DeclBase.cpp:2067