clang 10.0.0git

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"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/ASTLambda.h"
16 #include "clang/AST/ASTMutationListener.h"
17 #include "clang/AST/Attr.h"
18 #include "clang/AST/AttrIterator.h"
19 #include "clang/AST/Decl.h"
20 #include "clang/AST/DeclCXX.h"
21 #include "clang/AST/DeclContextInternals.h"
22 #include "clang/AST/DeclFriend.h"
23 #include "clang/AST/DeclObjC.h"
24 #include "clang/AST/DeclOpenMP.h"
25 #include "clang/AST/DeclTemplate.h"
26 #include "clang/AST/DependentDiagnostic.h"
27 #include "clang/AST/ExternalASTSource.h"
28 #include "clang/AST/Stmt.h"
29 #include "clang/AST/Type.h"
30 #include "clang/Basic/IdentifierTable.h"
31 #include "clang/Basic/LLVM.h"
32 #include "clang/Basic/LangOptions.h"
33 #include "clang/Basic/ObjCRuntime.h"
34 #include "clang/Basic/PartialDiagnostic.h"
35 #include "clang/Basic/SourceLocation.h"
36 #include "clang/Basic/TargetInfo.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
53 using 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
63 void Decl::updateOutOfDate(IdentifierInfo &II) const {
64 getASTContext().getExternalSource()->updateOutOfDateIdentifier(II);
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
73 void *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
93 void *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
114 Module *Decl::getOwningModuleSlow() const {
115 assert(isFromASTFile() && "Not from AST file?");
116 return getASTContext().getExternalSource()->getModule(getOwningModuleID());
117 }
118
119 bool Decl::hasLocalOwningModuleStorage() const {
120 return getASTContext().getLangOpts().trackLocalOwningModule();
121 }
122
123 const 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
132 void Decl::setInvalidDecl(bool Invalid) {
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.
143 setAccess(AS_public);
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
155 const char *DeclContext::getDeclKindName() const {
156 switch (getDeclKind()) {
157 #define DECL(DERIVED, BASE) case Decl::DERIVED: return #DERIVED;
158 #define ABSTRACT_DECL(DECL)
159 #include "clang/AST/DeclNodes.inc"
160 }
161 llvm_unreachable("Declaration context not in DeclNodes.inc!");
162 }
163
164 bool Decl::StatisticsEnabled = false;
165 void Decl::EnableStatistics() {
166 StatisticsEnabled = true;
167 }
168
169 void Decl::PrintStats() {
170 llvm::errs() << "\n*** Decl Stats:\n";
171
172 int totalDecls = 0;
173 #define DECL(DERIVED, BASE) totalDecls += n##DERIVED##s;
174 #define ABSTRACT_DECL(DECL)
175 #include "clang/AST/DeclNodes.inc"
176 llvm::errs() << " " << totalDecls << " decls total.\n";
177
178 int totalBytes = 0;
179 #define DECL(DERIVED, BASE) \
180 if (n##DERIVED##s > 0) { \
181 totalBytes += (int)(n##DERIVED##s * sizeof(DERIVED##Decl)); \
182 llvm::errs() << " " << n##DERIVED##s << " " #DERIVED " decls, " \
183 << sizeof(DERIVED##Decl) << " each (" \
184 << n##DERIVED##s * sizeof(DERIVED##Decl) \
185 << " bytes)\n"; \
186 }
187 #define ABSTRACT_DECL(DECL)
188 #include "clang/AST/DeclNodes.inc"
189
190 llvm::errs() << "Total bytes = " << totalBytes << "\n";
191 }
192
193 void Decl::add(Kind k) {
194 switch (k) {
195 #define DECL(DERIVED, BASE) case DERIVED: ++n##DERIVED##s; break;
196 #define ABSTRACT_DECL(DECL)
197 #include "clang/AST/DeclNodes.inc"
198 }
199 }
200
201 bool Decl::isTemplateParameterPack() const {
202 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(this))
203 return TTP->isParameterPack();
204 if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(this))
205 return NTTP->isParameterPack();
206 if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(this))
207 return TTP->isParameterPack();
208 return false;
209 }
210
211 bool Decl::isParameterPack() const {
212 if (const auto *Var = dyn_cast<VarDecl>(this))
213 return Var->isParameterPack();
214
215 return isTemplateParameterPack();
216 }
217
218 FunctionDecl *Decl::getAsFunction() {
219 if (auto *FD = dyn_cast<FunctionDecl>(this))
220 return FD;
221 if (const auto *FTD = dyn_cast<FunctionTemplateDecl>(this))
222 return FTD->getTemplatedDecl();
223 return nullptr;
224 }
225
226 bool Decl::isTemplateDecl() const {
227 return isa<TemplateDecl>(this);
228 }
229
230 TemplateDecl *Decl::getDescribedTemplate() const {
231 if (auto *FD = dyn_cast<FunctionDecl>(this))
232 return FD->getDescribedFunctionTemplate();
233 else if (auto *RD = dyn_cast<CXXRecordDecl>(this))
234 return RD->getDescribedClassTemplate();
235 else if (auto *VD = dyn_cast<VarDecl>(this))
236 return VD->getDescribedVarTemplate();
237 else if (auto *AD = dyn_cast<TypeAliasDecl>(this))
238 return AD->getDescribedAliasTemplate();
239
240 return nullptr;
241 }
242
243 bool Decl::isTemplated() const {
244 // A declaration is dependent if it is a template or a template pattern, or
245 // is within (lexcially for a friend, semantically otherwise) a dependent
246 // context.
247 // FIXME: Should local extern declarations be treated like friends?
248 if (auto *AsDC = dyn_cast<DeclContext>(this))
249 return AsDC->isDependentContext();
250 auto *DC = getFriendObjectKind() ? getLexicalDeclContext() : getDeclContext();
251 return DC->isDependentContext() || isTemplateDecl() || getDescribedTemplate();
252 }
253
254 const DeclContext *Decl::getParentFunctionOrMethod() const {
255 for (const DeclContext *DC = getDeclContext();
256 DC && !DC->isTranslationUnit() && !DC->isNamespace();
257 DC = DC->getParent())
258 if (DC->isFunctionOrMethod())
259 return DC;
260
261 return nullptr;
262 }
263
264 //===----------------------------------------------------------------------===//
265 // PrettyStackTraceDecl Implementation
266 //===----------------------------------------------------------------------===//
267
268 void PrettyStackTraceDecl::print(raw_ostream &OS) const {
269 SourceLocation TheLoc = Loc;
270 if (TheLoc.isInvalid() && TheDecl)
271 TheLoc = TheDecl->getLocation();
272
273 if (TheLoc.isValid()) {
274 TheLoc.print(OS, SM);
275 OS << ": ";
276 }
277
278 OS << Message;
279
280 if (const auto *DN = dyn_cast_or_null<NamedDecl>(TheDecl)) {
281 OS << " '";
282 DN->printQualifiedName(OS);
283 OS << '\'';
284 }
285 OS << '\n';
286 }
287
288 //===----------------------------------------------------------------------===//
289 // Decl Implementation
290 //===----------------------------------------------------------------------===//
291
292 // Out-of-line virtual method providing a home for Decl.
293 Decl::~Decl() = default;
294
295 void Decl::setDeclContext(DeclContext *DC) {
296 DeclCtx = DC;
297 }
298
299 void Decl::setLexicalDeclContext(DeclContext *DC) {
300 if (DC == getLexicalDeclContext())
301 return;
302
303 if (isInSemaDC()) {
304 setDeclContextsImpl(getDeclContext(), DC, getASTContext());
305 } else {
306 getMultipleDC()->LexicalDC = DC;
307 }
308
309 // FIXME: We shouldn't be changing the lexical context of declarations
310 // imported from AST files.
311 if (!isFromASTFile()) {
312 setModuleOwnershipKind(getModuleOwnershipKindForChildOf(DC));
313 if (hasOwningModule())
314 setLocalOwningModule(cast<Decl>(DC)->getOwningModule());
315 }
316
317 assert(
318 (getModuleOwnershipKind() != ModuleOwnershipKind::VisibleWhenImported ||
319 getOwningModule()) &&
320 "hidden declaration has no owning module");
321 }
322
323 void Decl::setDeclContextsImpl(DeclContext *SemaDC, DeclContext *LexicalDC,
324 ASTContext &Ctx) {
325 if (SemaDC == LexicalDC) {
326 DeclCtx = SemaDC;
327 } else {
328 auto *MDC = new (Ctx) Decl::MultipleDC();
329 MDC->SemanticDC = SemaDC;
330 MDC->LexicalDC = LexicalDC;
331 DeclCtx = MDC;
332 }
333 }
334
335 bool Decl::isLexicallyWithinFunctionOrMethod() const {
336 const DeclContext *LDC = getLexicalDeclContext();
337 while (true) {
338 if (LDC->isFunctionOrMethod())
339 return true;
340 if (!isa<TagDecl>(LDC))
341 return false;
342 LDC = LDC->getLexicalParent();
343 }
344 return false;
345 }
346
347 bool Decl::isInAnonymousNamespace() const {
348 for (const DeclContext *DC = getDeclContext(); DC; DC = DC->getParent()) {
349 if (const auto *ND = dyn_cast<NamespaceDecl>(DC))
350 if (ND->isAnonymousNamespace())
351 return true;
352 }
353
354 return false;
355 }
356
357 bool Decl::isInStdNamespace() const {
358 const DeclContext *DC = getDeclContext();
359 return DC && DC->isStdNamespace();
360 }
361
362 TranslationUnitDecl *Decl::getTranslationUnitDecl() {
363 if (auto *TUD = dyn_cast<TranslationUnitDecl>(this))
364 return TUD;
365
366 DeclContext *DC = getDeclContext();
367 assert(DC && "This decl is not contained in a translation unit!");
368
369 while (!DC->isTranslationUnit()) {
370 DC = DC->getParent();
371 assert(DC && "This decl is not contained in a translation unit!");
372 }
373
374 return cast<TranslationUnitDecl>(DC);
375 }
376
377 ASTContext &Decl::getASTContext() const {
378 return getTranslationUnitDecl()->getASTContext();
379 }
380
381 ASTMutationListener *Decl::getASTMutationListener() const {
382 return getASTContext().getASTMutationListener();
383 }
384
385 unsigned Decl::getMaxAlignment() const {
386 if (!hasAttrs())
387 return 0;
388
389 unsigned Align = 0;
390 const AttrVec &V = getAttrs();
391 ASTContext &Ctx = getASTContext();
392 specific_attr_iterator<AlignedAttr> I(V.begin()), E(V.end());
393 for (; I != E; ++I)
394 Align = std::max(Align, I->getAlignment(Ctx));
395 return Align;
396 }
397
398 bool Decl::isUsed(bool CheckUsedAttr) const {
399 const Decl *CanonD = getCanonicalDecl();
400 if (CanonD->Used)
401 return true;
402
403 // Check for used attribute.
404 // Ask the most recent decl, since attributes accumulate in the redecl chain.
405 if (CheckUsedAttr && getMostRecentDecl()->hasAttr<UsedAttr>())
406 return true;
407
408 // The information may have not been deserialized yet. Force deserialization
409 // to complete the needed information.
410 return getMostRecentDecl()->getCanonicalDecl()->Used;
411 }
412
413 void Decl::markUsed(ASTContext &C) {
414 if (isUsed(false))
415 return;
416
417 if (C.getASTMutationListener())
418 C.getASTMutationListener()->DeclarationMarkedUsed(this);
419
420 setIsUsed();
421 }
422
423 bool Decl::isReferenced() const {
424 if (Referenced)
425 return true;
426
427 // Check redeclarations.
428 for (const auto *I : redecls())
429 if (I->Referenced)
430 return true;
431
432 return false;
433 }
434
435 ExternalSourceSymbolAttr *Decl::getExternalSourceSymbolAttr() const {
436 const Decl *Definition = nullptr;
437 if (auto *ID = dyn_cast<ObjCInterfaceDecl>(this)) {
438 Definition = ID->getDefinition();
439 } else if (auto *PD = dyn_cast<ObjCProtocolDecl>(this)) {
440 Definition = PD->getDefinition();
441 } else if (auto *TD = dyn_cast<TagDecl>(this)) {
442 Definition = TD->getDefinition();
443 }
444 if (!Definition)
445 Definition = this;
446
447 if (auto *attr = Definition->getAttr<ExternalSourceSymbolAttr>())
448 return attr;
449 if (auto *dcd = dyn_cast<Decl>(getDeclContext())) {
450 return dcd->getAttr<ExternalSourceSymbolAttr>();
451 }
452
453 return nullptr;
454 }
455
456 bool Decl::hasDefiningAttr() const {
457 return hasAttr<AliasAttr>() || hasAttr<IFuncAttr>();
458 }
459
460 const Attr *Decl::getDefiningAttr() const {
461 if (auto *AA = getAttr<AliasAttr>())
462 return AA;
463 if (auto *IFA = getAttr<IFuncAttr>())
464 return IFA;
465 return nullptr;
466 }
467
468 static StringRef getRealizedPlatform(const AvailabilityAttr *A,
469 const ASTContext &Context) {
470 // Check if this is an App Extension "platform", and if so chop off
471 // the suffix for matching with the actual platform.
472 StringRef RealizedPlatform = A->getPlatform()->getName();
473 if (!Context.getLangOpts().AppExt)
474 return RealizedPlatform;
475 size_t suffix = RealizedPlatform.rfind("_app_extension");
476 if (suffix != StringRef::npos)
477 return RealizedPlatform.slice(0, suffix);
478 return RealizedPlatform;
479 }
480
481 /// Determine the availability of the given declaration based on
482 /// the target platform.
483 ///
484 /// When it returns an availability result other than \c AR_Available,
485 /// if the \p Message parameter is non-NULL, it will be set to a
486 /// string describing why the entity is unavailable.
487 ///
488 /// FIXME: Make these strings localizable, since they end up in
489 /// diagnostics.
490 static AvailabilityResult CheckAvailability(ASTContext &Context,
491 const AvailabilityAttr *A,
492 std::string *Message,
493 VersionTuple EnclosingVersion) {
494 if (EnclosingVersion.empty())
495 EnclosingVersion = Context.getTargetInfo().getPlatformMinVersion();
496
497 if (EnclosingVersion.empty())
498 return AR_Available;
499
500 StringRef ActualPlatform = A->getPlatform()->getName();
501 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
502
503 // Match the platform name.
504 if (getRealizedPlatform(A, Context) != TargetPlatform)
505 return AR_Available;
506
507 StringRef PrettyPlatformName
508 = AvailabilityAttr::getPrettyPlatformName(ActualPlatform);
509
510 if (PrettyPlatformName.empty())
511 PrettyPlatformName = ActualPlatform;
512
513 std::string HintMessage;
514 if (!A->getMessage().empty()) {
515 HintMessage = " - ";
516 HintMessage += A->getMessage();
517 }
518
519 // Make sure that this declaration has not been marked 'unavailable'.
520 if (A->getUnavailable()) {
521 if (Message) {
522 Message->clear();
523 llvm::raw_string_ostream Out(*Message);
524 Out << "not available on " << PrettyPlatformName
525 << HintMessage;
526 }
527
528 return AR_Unavailable;
529 }
530
531 // Make sure that this declaration has already been introduced.
532 if (!A->getIntroduced().empty() &&
533 EnclosingVersion < A->getIntroduced()) {
534 if (Message) {
535 Message->clear();
536 llvm::raw_string_ostream Out(*Message);
537 VersionTuple VTI(A->getIntroduced());
538 Out << "introduced in " << PrettyPlatformName << ' '
539 << VTI << HintMessage;
540 }
541
542 return A->getStrict() ? AR_Unavailable : AR_NotYetIntroduced;
543 }
544
545 // Make sure that this declaration hasn't been obsoleted.
546 if (!A->getObsoleted().empty() && EnclosingVersion >= A->getObsoleted()) {
547 if (Message) {
548 Message->clear();
549 llvm::raw_string_ostream Out(*Message);
550 VersionTuple VTO(A->getObsoleted());
551 Out << "obsoleted in " << PrettyPlatformName << ' '
552 << VTO << HintMessage;
553 }
554
555 return AR_Unavailable;
556 }
557
558 // Make sure that this declaration hasn't been deprecated.
559 if (!A->getDeprecated().empty() && EnclosingVersion >= A->getDeprecated()) {
560 if (Message) {
561 Message->clear();
562 llvm::raw_string_ostream Out(*Message);
563 VersionTuple VTD(A->getDeprecated());
564 Out << "first deprecated in " << PrettyPlatformName << ' '
565 << VTD << HintMessage;
566 }
567
568 return AR_Deprecated;
569 }
570
571 return AR_Available;
572 }
573
574 AvailabilityResult Decl::getAvailability(std::string *Message,
575 VersionTuple EnclosingVersion,
576 StringRef *RealizedPlatform) const {
577 if (auto *FTD = dyn_cast<FunctionTemplateDecl>(this))
578 return FTD->getTemplatedDecl()->getAvailability(Message, EnclosingVersion,
579 RealizedPlatform);
580
581 AvailabilityResult Result = AR_Available;
582 std::string ResultMessage;
583
584 for (const auto *A : attrs()) {
585 if (const auto *Deprecated = dyn_cast<DeprecatedAttr>(A)) {
586 if (Result >= AR_Deprecated)
587 continue;
588
589 if (Message)
590 ResultMessage = Deprecated->getMessage();
591
592 Result = AR_Deprecated;
593 continue;
594 }
595
596 if (const auto *Unavailable = dyn_cast<UnavailableAttr>(A)) {
597 if (Message)
598 *Message = Unavailable->getMessage();
599 return AR_Unavailable;
600 }
601
602 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
603 AvailabilityResult AR = CheckAvailability(getASTContext(), Availability,
604 Message, EnclosingVersion);
605
606 if (AR == AR_Unavailable) {
607 if (RealizedPlatform)
608 *RealizedPlatform = Availability->getPlatform()->getName();
609 return AR_Unavailable;
610 }
611
612 if (AR > Result) {
613 Result = AR;
614 if (Message)
615 ResultMessage.swap(*Message);
616 }
617 continue;
618 }
619 }
620
621 if (Message)
622 Message->swap(ResultMessage);
623 return Result;
624 }
625
626 VersionTuple Decl::getVersionIntroduced() const {
627 const ASTContext &Context = getASTContext();
628 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
629 for (const auto *A : attrs()) {
630 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
631 if (getRealizedPlatform(Availability, Context) != TargetPlatform)
632 continue;
633 if (!Availability->getIntroduced().empty())
634 return Availability->getIntroduced();
635 }
636 }
637 return {};
638 }
639
640 bool Decl::canBeWeakImported(bool &IsDefinition) const {
641 IsDefinition = false;
642
643 // Variables, if they aren't definitions.
644 if (const auto *Var = dyn_cast<VarDecl>(this)) {
645 if (Var->isThisDeclarationADefinition()) {
646 IsDefinition = true;
647 return false;
648 }
649 return true;
650
651 // Functions, if they aren't definitions.
652 } else if (const auto *FD = dyn_cast<FunctionDecl>(this)) {
653 if (FD->hasBody()) {
654 IsDefinition = true;
655 return false;
656 }
657 return true;
658
659 // Objective-C classes, if this is the non-fragile runtime.
660 } else if (isa<ObjCInterfaceDecl>(this) &&
661 getASTContext().getLangOpts().ObjCRuntime.hasWeakClassImport()) {
662 return true;
663
664 // Nothing else.
665 } else {
666 return false;
667 }
668 }
669
670 bool Decl::isWeakImported() const {
671 bool IsDefinition;
672 if (!canBeWeakImported(IsDefinition))
673 return false;
674
675 for (const auto *A : attrs()) {
676 if (isa<WeakImportAttr>(A))
677 return true;
678
679 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
680 if (CheckAvailability(getASTContext(), Availability, nullptr,
681 VersionTuple()) == AR_NotYetIntroduced)
682 return true;
683 }
684 }
685
686 return false;
687 }
688
689 unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
690 switch (DeclKind) {
691 case Function:
692 case CXXDeductionGuide:
693 case CXXMethod:
694 case CXXConstructor:
695 case ConstructorUsingShadow:
696 case CXXDestructor:
697 case CXXConversion:
698 case EnumConstant:
699 case Var:
700 case ImplicitParam:
701 case ParmVar:
702 case ObjCMethod:
703 case ObjCProperty:
704 case MSProperty:
705 return IDNS_Ordinary;
706 case Label:
707 return IDNS_Label;
708 case IndirectField:
709 return IDNS_Ordinary | IDNS_Member;
710
711 case Binding:
712 case NonTypeTemplateParm:
713 case VarTemplate:
714 case Concept:
715 // These (C++-only) declarations are found by redeclaration lookup for
716 // tag types, so we include them in the tag namespace.
717 return IDNS_Ordinary | IDNS_Tag;
718
719 case ObjCCompatibleAlias:
720 case ObjCInterface:
721 return IDNS_Ordinary | IDNS_Type;
722
723 case Typedef:
724 case TypeAlias:
725 case TemplateTypeParm:
726 case ObjCTypeParam:
727 return IDNS_Ordinary | IDNS_Type;
728
729 case UnresolvedUsingTypename:
730 return IDNS_Ordinary | IDNS_Type | IDNS_Using;
731
732 case UsingShadow:
733 return 0; // we'll actually overwrite this later
734
735 case UnresolvedUsingValue:
736 return IDNS_Ordinary | IDNS_Using;
737
738 case Using:
739 case UsingPack:
740 return IDNS_Using;
741
742 case ObjCProtocol:
743 return IDNS_ObjCProtocol;
744
745 case Field:
746 case ObjCAtDefsField:
747 case ObjCIvar:
748 return IDNS_Member;
749
750 case Record:
751 case CXXRecord:
752 case Enum:
753 return IDNS_Tag | IDNS_Type;
754
755 case Namespace:
756 case NamespaceAlias:
757 return IDNS_Namespace;
758
759 case FunctionTemplate:
760 return IDNS_Ordinary;
761
762 case ClassTemplate:
763 case TemplateTemplateParm:
764 case TypeAliasTemplate:
765 return IDNS_Ordinary | IDNS_Tag | IDNS_Type;
766
767 case OMPDeclareReduction:
768 return IDNS_OMPReduction;
769
770 case OMPDeclareMapper:
771 return IDNS_OMPMapper;
772
773 // Never have names.
774 case Friend:
775 case FriendTemplate:
776 case AccessSpec:
777 case LinkageSpec:
778 case Export:
779 case FileScopeAsm:
780 case StaticAssert:
781 case ObjCPropertyImpl:
782 case PragmaComment:
783 case PragmaDetectMismatch:
784 case Block:
785 case Captured:
786 case TranslationUnit:
787 case ExternCContext:
788 case Decomposition:
789
790 case UsingDirective:
791 case BuiltinTemplate:
792 case ClassTemplateSpecialization:
793 case ClassTemplatePartialSpecialization:
794 case ClassScopeFunctionSpecialization:
795 case VarTemplateSpecialization:
796 case VarTemplatePartialSpecialization:
797 case ObjCImplementation:
798 case ObjCCategory:
799 case ObjCCategoryImpl:
800 case Import:
801 case OMPThreadPrivate:
802 case OMPAllocate:
803 case OMPRequires:
804 case OMPCapturedExpr:
805 case Empty:
806 case LifetimeExtendedTemporary:
807 case RequiresExprBody:
808 // Never looked up by name.
809 return 0;
810 }
811
812 llvm_unreachable("Invalid DeclKind!");
813 }
814
815 void Decl::setAttrsImpl(const AttrVec &attrs, ASTContext &Ctx) {
816 assert(!HasAttrs && "Decl already contains attrs.");
817
818 AttrVec &AttrBlank = Ctx.getDeclAttrs(this);
819 assert(AttrBlank.empty() && "HasAttrs was wrong?");
820
821 AttrBlank = attrs;
822 HasAttrs = true;
823 }
824
825 void Decl::dropAttrs() {
826 if (!HasAttrs) return;
827
828 HasAttrs = false;
829 getASTContext().eraseDeclAttrs(this);
830 }
831
832 void Decl::addAttr(Attr *A) {
833 if (!hasAttrs()) {
834 setAttrs(AttrVec(1, A));
835 return;
836 }
837
838 AttrVec &Attrs = getAttrs();
839 if (!A->isInherited()) {
840 Attrs.push_back(A);
841 return;
842 }
843
844 // Attribute inheritance is processed after attribute parsing. To keep the
845 // order as in the source code, add inherited attributes before non-inherited
846 // ones.
847 auto I = Attrs.begin(), E = Attrs.end();
848 for (; I != E; ++I) {
849 if (!(*I)->isInherited())
850 break;
851 }
852 Attrs.insert(I, A);
853 }
854
855 const AttrVec &Decl::getAttrs() const {
856 assert(HasAttrs && "No attrs to get!");
857 return getASTContext().getDeclAttrs(this);
858 }
859
860 Decl *Decl::castFromDeclContext (const DeclContext *D) {
861 Decl::Kind DK = D->getDeclKind();
862 switch(DK) {
863 #define DECL(NAME, BASE)
864 #define DECL_CONTEXT(NAME) \
865 case Decl::NAME: \
866 return static_cast<NAME##Decl *>(const_cast<DeclContext *>(D));
867 #define DECL_CONTEXT_BASE(NAME)
868 #include "clang/AST/DeclNodes.inc"
869 default:
870 #define DECL(NAME, BASE)
871 #define DECL_CONTEXT_BASE(NAME) \
872 if (DK >= first##NAME && DK <= last##NAME) \
873 return static_cast<NAME##Decl *>(const_cast<DeclContext *>(D));
874 #include "clang/AST/DeclNodes.inc"
875 llvm_unreachable("a decl that inherits DeclContext isn't handled");
876 }
877 }
878
879 DeclContext *Decl::castToDeclContext(const Decl *D) {
880 Decl::Kind DK = D->getKind();
881 switch(DK) {
882 #define DECL(NAME, BASE)
883 #define DECL_CONTEXT(NAME) \
884 case Decl::NAME: \
885 return static_cast<NAME##Decl *>(const_cast<Decl *>(D));
886 #define DECL_CONTEXT_BASE(NAME)
887 #include "clang/AST/DeclNodes.inc"
888 default:
889 #define DECL(NAME, BASE)
890 #define DECL_CONTEXT_BASE(NAME) \
891 if (DK >= first##NAME && DK <= last##NAME) \
892 return static_cast<NAME##Decl *>(const_cast<Decl *>(D));
893 #include "clang/AST/DeclNodes.inc"
894 llvm_unreachable("a decl that inherits DeclContext isn't handled");
895 }
896 }
897
898 SourceLocation Decl::getBodyRBrace() const {
899 // Special handling of FunctionDecl to avoid de-serializing the body from PCH.
900 // FunctionDecl stores EndRangeLoc for this purpose.
901 if (const auto *FD = dyn_cast<FunctionDecl>(this)) {
902 const FunctionDecl *Definition;
903 if (FD->hasBody(Definition))
904 return Definition->getSourceRange().getEnd();
905 return {};
906 }
907
908 if (Stmt *Body = getBody())
909 return Body->getSourceRange().getEnd();
910
911 return {};
912 }
913
914 bool Decl::AccessDeclContextSanity() const {
915 #ifndef NDEBUG
916 // Suppress this check if any of the following hold:
917 // 1. this is the translation unit (and thus has no parent)
918 // 2. this is a template parameter (and thus doesn't belong to its context)
919 // 3. this is a non-type template parameter
920 // 4. the context is not a record
921 // 5. it's invalid
922 // 6. it's a C++0x static_assert.
923 // 7. it's a block literal declaration
924 if (isa<TranslationUnitDecl>(this) ||
925 isa<TemplateTypeParmDecl>(this) ||
926 isa<NonTypeTemplateParmDecl>(this) ||
927 !getDeclContext() ||
928 !isa<CXXRecordDecl>(getDeclContext()) ||
929 isInvalidDecl() ||
930 isa<StaticAssertDecl>(this) ||
931 isa<BlockDecl>(this) ||
932 // FIXME: a ParmVarDecl can have ClassTemplateSpecialization
933 // as DeclContext (?).
934 isa<ParmVarDecl>(this) ||
935 // FIXME: a ClassTemplateSpecialization or CXXRecordDecl can have
936 // AS_none as access specifier.
937 isa<CXXRecordDecl>(this) ||
938 isa<ClassScopeFunctionSpecializationDecl>(this))
939 return true;
940
941 assert(Access != AS_none &&
942 "Access specifier is AS_none inside a record decl");
943 #endif
944 return true;
945 }
946
947 static Decl::Kind getKind(const Decl *D) { return D->getKind(); }
948 static Decl::Kind getKind(const DeclContext *DC) { return DC->getDeclKind(); }
949
950 int64_t Decl::getID() const {
951 return getASTContext().getAllocator().identifyKnownAlignedObject<Decl>(this);
952 }
953
954 const FunctionType *Decl::getFunctionType(bool BlocksToo) const {
955 QualType Ty;
956 if (const auto *D = dyn_cast<ValueDecl>(this))
957 Ty = D->getType();
958 else if (const auto *D = dyn_cast<TypedefNameDecl>(this))
959 Ty = D->getUnderlyingType();
960 else
961 return nullptr;
962
963 if (Ty->isFunctionPointerType())
964 Ty = Ty->castAs<PointerType>()->getPointeeType();
965 else if (Ty->isFunctionReferenceType())
966 Ty = Ty->castAs<ReferenceType>()->getPointeeType();
967 else if (BlocksToo && Ty->isBlockPointerType())
968 Ty = Ty->castAs<BlockPointerType>()->getPointeeType();
969
970 return Ty->getAs<FunctionType>();
971 }
972
973 /// Starting at a given context (a Decl or DeclContext), look for a
974 /// code context that is not a closure (a lambda, block, etc.).
975 template <class T> static Decl *getNonClosureContext(T *D) {
976 if (getKind(D) == Decl::CXXMethod) {
977 auto *MD = cast<CXXMethodDecl>(D);
978 if (MD->getOverloadedOperator() == OO_Call &&
979 MD->getParent()->isLambda())
980 return getNonClosureContext(MD->getParent()->getParent());
981 return MD;
982 } else if (auto *FD = dyn_cast<FunctionDecl>(D))
983 return FD;
984 else if (auto *MD = dyn_cast<ObjCMethodDecl>(D))
985 return MD;
986 else if (auto *BD = dyn_cast<BlockDecl>(D))
987 return getNonClosureContext(BD->getParent());
988 else if (auto *CD = dyn_cast<CapturedDecl>(D))
989 return getNonClosureContext(CD->getParent());
990 else
991 return nullptr;
992 }
993
994 Decl *Decl::getNonClosureContext() {
995 return ::getNonClosureContext(this);
996 }
997
998 Decl *DeclContext::getNonClosureAncestor() {
999 return ::getNonClosureContext(this);
1000 }
1001
1002 //===----------------------------------------------------------------------===//
1003 // DeclContext Implementation
1004 //===----------------------------------------------------------------------===//
1005
1006 DeclContext::DeclContext(Decl::Kind K) {
1007 DeclContextBits.DeclKind = K;
1008 setHasExternalLexicalStorage(false);
1009 setHasExternalVisibleStorage(false);
1010 setNeedToReconcileExternalVisibleStorage(false);
1011 setHasLazyLocalLexicalLookups(false);
1012 setHasLazyExternalLexicalLookups(false);
1013 setUseQualifiedLookup(false);
1014 }
1015
1016 bool DeclContext::classof(const Decl *D) {
1017 switch (D->getKind()) {
1018 #define DECL(NAME, BASE)
1019 #define DECL_CONTEXT(NAME) case Decl::NAME:
1020 #define DECL_CONTEXT_BASE(NAME)
1021 #include "clang/AST/DeclNodes.inc"
1022 return true;
1023 default:
1024 #define DECL(NAME, BASE)
1025 #define DECL_CONTEXT_BASE(NAME) \
1026 if (D->getKind() >= Decl::first##NAME && \
1027 D->getKind() <= Decl::last##NAME) \
1028 return true;
1029 #include "clang/AST/DeclNodes.inc"
1030 return false;
1031 }
1032 }
1033
1034 DeclContext::~DeclContext() = default;
1035
1036 /// Find the parent context of this context that will be
1037 /// used for unqualified name lookup.
1038 ///
1039 /// Generally, the parent lookup context is the semantic context. However, for
1040 /// a friend function the parent lookup context is the lexical context, which
1041 /// is the class in which the friend is declared.
1042 DeclContext *DeclContext::getLookupParent() {
1043 // FIXME: Find a better way to identify friends.
1044 if (isa<FunctionDecl>(this))
1045 if (getParent()->getRedeclContext()->isFileContext() &&
1046 getLexicalParent()->getRedeclContext()->isRecord())
1047 return getLexicalParent();
1048
1049 // A lookup within the call operator of a lambda never looks in the lambda
1050 // class; instead, skip to the context in which that closure type is
1051 // declared.
1052 if (isLambdaCallOperator(this))
1053 return getParent()->getParent();
1054
1055 return getParent();
1056 }
1057
1058 const BlockDecl *DeclContext::getInnermostBlockDecl() const {
1059 const DeclContext *Ctx = this;
1060
1061 do {
1062 if (Ctx->isClosure())
1063 return cast<BlockDecl>(Ctx);
1064 Ctx = Ctx->getParent();
1065 } while (Ctx);
1066
1067 return nullptr;
1068 }
1069
1070 bool DeclContext::isInlineNamespace() const {
1071 return isNamespace() &&
1072 cast<NamespaceDecl>(this)->isInline();
1073 }
1074
1075 bool DeclContext::isStdNamespace() const {
1076 if (!isNamespace())
1077 return false;
1078
1079 const auto *ND = cast<NamespaceDecl>(this);
1080 if (ND->isInline()) {
1081 return ND->getParent()->isStdNamespace();
1082 }
1083
1084 if (!getParent()->getRedeclContext()->isTranslationUnit())
1085 return false;
1086
1087 const IdentifierInfo *II = ND->getIdentifier();
1088 return II && II->isStr("std");
1089 }
1090
1091 bool DeclContext::isDependentContext() const {
1092 if (isFileContext())
1093 return false;
1094
1095 if (isa<ClassTemplatePartialSpecializationDecl>(this))
1096 return true;
1097
1098 if (const auto *Record = dyn_cast<CXXRecordDecl>(this)) {
1099 if (Record->getDescribedClassTemplate())
1100 return true;
1101
1102 if (Record->isDependentLambda())
1103 return true;
1104 }
1105
1106 if (const auto *Function = dyn_cast<FunctionDecl>(this)) {
1107 if (Function->getDescribedFunctionTemplate())
1108 return true;
1109
1110 // Friend function declarations are dependent if their *lexical*
1111 // context is dependent.
1112 if (cast<Decl>(this)->getFriendObjectKind())
1113 return getLexicalParent()->isDependentContext();
1114 }
1115
1116 // FIXME: A variable template is a dependent context, but is not a
1117 // DeclContext. A context within it (such as a lambda-expression)
1118 // should be considered dependent.
1119
1120 return getParent() && getParent()->isDependentContext();
1121 }
1122
1123 bool DeclContext::isTransparentContext() const {
1124 if (getDeclKind() == Decl::Enum)
1125 return !cast<EnumDecl>(this)->isScoped();
1126 else if (getDeclKind() == Decl::LinkageSpec || getDeclKind() == Decl::Export)
1127 return true;
1128
1129 return false;
1130 }
1131
1132 static bool isLinkageSpecContext(const DeclContext *DC,
1133 LinkageSpecDecl::LanguageIDs ID) {
1134 while (DC->getDeclKind() != Decl::TranslationUnit) {
1135 if (DC->getDeclKind() == Decl::LinkageSpec)
1136 return cast<LinkageSpecDecl>(DC)->getLanguage() == ID;
1137 DC = DC->getLexicalParent();
1138 }
1139 return false;
1140 }
1141
1142 bool DeclContext::isExternCContext() const {
1143 return isLinkageSpecContext(this, LinkageSpecDecl::lang_c);
1144 }
1145
1146 const LinkageSpecDecl *DeclContext::getExternCContext() const {
1147 const DeclContext *DC = this;
1148 while (DC->getDeclKind() != Decl::TranslationUnit) {
1149 if (DC->getDeclKind() == Decl::LinkageSpec &&
1150 cast<LinkageSpecDecl>(DC)->getLanguage() == LinkageSpecDecl::lang_c)
1151 return cast<LinkageSpecDecl>(DC);
1152 DC = DC->getLexicalParent();
1153 }
1154 return nullptr;
1155 }
1156
1157 bool DeclContext::isExternCXXContext() const {
1158 return isLinkageSpecContext(this, LinkageSpecDecl::lang_cxx);
1159 }
1160
1161 bool DeclContext::Encloses(const DeclContext *DC) const {
1162 if (getPrimaryContext() != this)
1163 return getPrimaryContext()->Encloses(DC);
1164
1165 for (; DC; DC = DC->getParent())
1166 if (DC->getPrimaryContext() == this)
1167 return true;
1168 return false;
1169 }
1170
1171 DeclContext *DeclContext::getPrimaryContext() {
1172 switch (getDeclKind()) {
1173 case Decl::TranslationUnit:
1174 case Decl::ExternCContext:
1175 case Decl::LinkageSpec:
1176 case Decl::Export:
1177 case Decl::Block:
1178 case Decl::Captured:
1179 case Decl::OMPDeclareReduction:
1180 case Decl::OMPDeclareMapper:
1181 case Decl::RequiresExprBody:
1182 // There is only one DeclContext for these entities.
1183 return this;
1184
1185 case Decl::Namespace:
1186 // The original namespace is our primary context.
1187 return static_cast<NamespaceDecl *>(this)->getOriginalNamespace();
1188
1189 case Decl::ObjCMethod:
1190 return this;
1191
1192 case Decl::ObjCInterface:
1193 if (auto *OID = dyn_cast<ObjCInterfaceDecl>(this))
1194 if (auto *Def = OID->getDefinition())
1195 return Def;
1196 return this;
1197
1198 case Decl::ObjCProtocol:
1199 if (auto *OPD = dyn_cast<ObjCProtocolDecl>(this))
1200 if (auto *Def = OPD->getDefinition())
1201 return Def;
1202 return this;
1203
1204 case Decl::ObjCCategory:
1205 return this;
1206
1207 case Decl::ObjCImplementation:
1208 case Decl::ObjCCategoryImpl:
1209 return this;
1210
1211 default:
1212 if (getDeclKind() >= Decl::firstTag && getDeclKind() <= Decl::lastTag) {
1213 // If this is a tag type that has a definition or is currently
1214 // being defined, that definition is our primary context.
1215 auto *Tag = cast<TagDecl>(this);
1216
1217 if (TagDecl *Def = Tag->getDefinition())
1218 return Def;
1219
1220 if (const auto *TagTy = dyn_cast<TagType>(Tag->getTypeForDecl())) {
1221 // Note, TagType::getDecl returns the (partial) definition one exists.
1222 TagDecl *PossiblePartialDef = TagTy->getDecl();
1223 if (PossiblePartialDef->isBeingDefined())
1224 return PossiblePartialDef;
1225 } else {
1226 assert(isa<InjectedClassNameType>(Tag->getTypeForDecl()));
1227 }
1228
1229 return Tag;
1230 }
1231
1232 assert(getDeclKind() >= Decl::firstFunction &&
1233 getDeclKind() <= Decl::lastFunction &&
1234 "Unknown DeclContext kind");
1235 return this;
1236 }
1237 }
1238
1239 void
1240 DeclContext::collectAllContexts(SmallVectorImpl<DeclContext *> &Contexts){
1241 Contexts.clear();
1242
1243 if (getDeclKind() != Decl::Namespace) {
1244 Contexts.push_back(this);
1245 return;
1246 }
1247
1248 auto *Self = static_cast<NamespaceDecl *>(this);
1249 for (NamespaceDecl *N = Self->getMostRecentDecl(); N;
1250 N = N->getPreviousDecl())
1251 Contexts.push_back(N);
1252
1253 std::reverse(Contexts.begin(), Contexts.end());
1254 }
1255
1256 std::pair<Decl *, Decl *>
1257 DeclContext::BuildDeclChain(ArrayRef<Decl *> Decls,
1258 bool FieldsAlreadyLoaded) {
1259 // Build up a chain of declarations via the Decl::NextInContextAndBits field.
1260 Decl *FirstNewDecl = nullptr;
1261 Decl *PrevDecl = nullptr;
1262 for (auto *D : Decls) {
1263 if (FieldsAlreadyLoaded && isa<FieldDecl>(D))
1264 continue;
1265
1266 if (PrevDecl)
1267 PrevDecl->NextInContextAndBits.setPointer(D);
1268 else
1269 FirstNewDecl = D;
1270
1271 PrevDecl = D;
1272 }
1273
1274 return std::make_pair(FirstNewDecl, PrevDecl);
1275 }
1276
1277 /// We have just acquired external visible storage, and we already have
1278 /// built a lookup map. For every name in the map, pull in the new names from
1279 /// the external storage.
1280 void DeclContext::reconcileExternalVisibleStorage() const {
1281 assert(hasNeedToReconcileExternalVisibleStorage() && LookupPtr);
1282 setNeedToReconcileExternalVisibleStorage(false);
1283
1284 for (auto &Lookup : *LookupPtr)
1285 Lookup.second.setHasExternalDecls();
1286 }
1287
1288 /// Load the declarations within this lexical storage from an
1289 /// external source.
1290 /// \return \c true if any declarations were added.
1291 bool
1292 DeclContext::LoadLexicalDeclsFromExternalStorage() const {
1293 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1294 assert(hasExternalLexicalStorage() && Source && "No external storage?");
1295
1296 // Notify that we have a DeclContext that is initializing.
1297 ExternalASTSource::Deserializing ADeclContext(Source);
1298
1299 // Load the external declarations, if any.
1300 SmallVector<Decl*, 64> Decls;
1301 setHasExternalLexicalStorage(false);
1302 Source->FindExternalLexicalDecls(this, Decls);
1303
1304 if (Decls.empty())
1305 return false;
1306
1307 // We may have already loaded just the fields of this record, in which case
1308 // we need to ignore them.
1309 bool FieldsAlreadyLoaded = false;
1310 if (const auto *RD = dyn_cast<RecordDecl>(this))
1311 FieldsAlreadyLoaded = RD->hasLoadedFieldsFromExternalStorage();
1312
1313 // Splice the newly-read declarations into the beginning of the list
1314 // of declarations.
1315 Decl *ExternalFirst, *ExternalLast;
1316 std::tie(ExternalFirst, ExternalLast) =
1317 BuildDeclChain(Decls, FieldsAlreadyLoaded);
1318 ExternalLast->NextInContextAndBits.setPointer(FirstDecl);
1319 FirstDecl = ExternalFirst;
1320 if (!LastDecl)
1321 LastDecl = ExternalLast;
1322 return true;
1323 }
1324
1325 DeclContext::lookup_result
1326 ExternalASTSource::SetNoExternalVisibleDeclsForName(const DeclContext *DC,
1327 DeclarationName Name) {
1328 ASTContext &Context = DC->getParentASTContext();
1329 StoredDeclsMap *Map;
1330 if (!(Map = DC->LookupPtr))
1331 Map = DC->CreateStoredDeclsMap(Context);
1332 if (DC->hasNeedToReconcileExternalVisibleStorage())
1333 DC->reconcileExternalVisibleStorage();
1334
1335 (*Map)[Name].removeExternalDecls();
1336
1337 return DeclContext::lookup_result();
1338 }
1339
1340 DeclContext::lookup_result
1341 ExternalASTSource::SetExternalVisibleDeclsForName(const DeclContext *DC,
1342 DeclarationName Name,
1343 ArrayRef<NamedDecl*> Decls) {
1344 ASTContext &Context = DC->getParentASTContext();
1345 StoredDeclsMap *Map;
1346 if (!(Map = DC->LookupPtr))
1347 Map = DC->CreateStoredDeclsMap(Context);
1348 if (DC->hasNeedToReconcileExternalVisibleStorage())
1349 DC->reconcileExternalVisibleStorage();
1350
1351 StoredDeclsList &List = (*Map)[Name];
1352
1353 // Clear out any old external visible declarations, to avoid quadratic
1354 // performance in the redeclaration checks below.
1355 List.removeExternalDecls();
1356
1357 if (!List.isNull()) {
1358 // We have both existing declarations and new declarations for this name.
1359 // Some of the declarations may simply replace existing ones. Handle those
1360 // first.
1361 llvm::SmallVector<unsigned, 8> Skip;
1362 for (unsigned I = 0, N = Decls.size(); I != N; ++I)
1363 if (List.HandleRedeclaration(Decls[I], /*IsKnownNewer*/false))
1364 Skip.push_back(I);
1365 Skip.push_back(Decls.size());
1366
1367 // Add in any new declarations.
1368 unsigned SkipPos = 0;
1369 for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
1370 if (I == Skip[SkipPos])
1371 ++SkipPos;
1372 else
1373 List.AddSubsequentDecl(Decls[I]);
1374 }
1375 } else {
1376 // Convert the array to a StoredDeclsList.
1377 for (auto *D : Decls) {
1378 if (List.isNull())
1379 List.setOnlyValue(D);
1380 else
1381 List.AddSubsequentDecl(D);
1382 }
1383 }
1384
1385 return List.getLookupResult();
1386 }
1387
1388 DeclContext::decl_iterator DeclContext::decls_begin() const {
1389 if (hasExternalLexicalStorage())
1390 LoadLexicalDeclsFromExternalStorage();
1391 return decl_iterator(FirstDecl);
1392 }
1393
1394 bool DeclContext::decls_empty() const {
1395 if (hasExternalLexicalStorage())
1396 LoadLexicalDeclsFromExternalStorage();
1397
1398 return !FirstDecl;
1399 }
1400
1401 bool DeclContext::containsDecl(Decl *D) const {
1402 return (D->getLexicalDeclContext() == this &&
1403 (D->NextInContextAndBits.getPointer() || D == LastDecl));
1404 }
1405
1406 bool DeclContext::containsDeclAndLoad(Decl *D) const {
1407 if (hasExternalLexicalStorage())
1408 LoadLexicalDeclsFromExternalStorage();
1409 return containsDecl(D);
1410 }
1411
1412 /// shouldBeHidden - Determine whether a declaration which was declared
1413 /// within its semantic context should be invisible to qualified name lookup.
1414 static bool shouldBeHidden(NamedDecl *D) {
1415 // Skip unnamed declarations.
1416 if (!D->getDeclName())
1417 return true;
1418
1419 // Skip entities that can't be found by name lookup into a particular
1420 // context.
1421 if ((D->getIdentifierNamespace() == 0 && !isa<UsingDirectiveDecl>(D)) ||
1422 D->isTemplateParameter())
1423 return true;
1424
1425 // Skip friends and local extern declarations unless they're the first
1426 // declaration of the entity.
1427 if ((D->isLocalExternDecl() || D->getFriendObjectKind()) &&
1428 D != D->getCanonicalDecl())
1429 return true;
1430
1431 // Skip template specializations.
1432 // FIXME: This feels like a hack. Should DeclarationName support
1433 // template-ids, or is there a better way to keep specializations
1434 // from being visible?
1435 if (isa<ClassTemplateSpecializationDecl>(D))
1436 return true;
1437 if (auto *FD = dyn_cast<FunctionDecl>(D))
1438 if (FD->isFunctionTemplateSpecialization())
1439 return true;
1440
1441 return false;
1442 }
1443
1444 void DeclContext::removeDecl(Decl *D) {
1445 assert(D->getLexicalDeclContext() == this &&
1446 "decl being removed from non-lexical context");
1447 assert((D->NextInContextAndBits.getPointer() || D == LastDecl) &&
1448 "decl is not in decls list");
1449
1450 // Remove D from the decl chain. This is O(n) but hopefully rare.
1451 if (D == FirstDecl) {
1452 if (D == LastDecl)
1453 FirstDecl = LastDecl = nullptr;
1454 else
1455 FirstDecl = D->NextInContextAndBits.getPointer();
1456 } else {
1457 for (Decl *I = FirstDecl; true; I = I->NextInContextAndBits.getPointer()) {
1458 assert(I && "decl not found in linked list");
1459 if (I->NextInContextAndBits.getPointer() == D) {
1460 I->NextInContextAndBits.setPointer(D->NextInContextAndBits.getPointer());
1461 if (D == LastDecl) LastDecl = I;
1462 break;
1463 }
1464 }
1465 }
1466
1467 // Mark that D is no longer in the decl chain.
1468 D->NextInContextAndBits.setPointer(nullptr);
1469
1470 // Remove D from the lookup table if necessary.
1471 if (isa<NamedDecl>(D)) {
1472 auto *ND = cast<NamedDecl>(D);
1473
1474 // Do not try to remove the declaration if that is invisible to qualified
1475 // lookup. E.g. template specializations are skipped.
1476 if (shouldBeHidden(ND))
1477 return;
1478
1479 // Remove only decls that have a name
1480 if (!ND->getDeclName())
1481 return;
1482
1483 auto *DC = D->getDeclContext();
1484 do {
1485 StoredDeclsMap *Map = DC->getPrimaryContext()->LookupPtr;
1486 if (Map) {
1487 StoredDeclsMap::iterator Pos = Map->find(ND->getDeclName());
1488 assert(Pos != Map->end() && "no lookup entry for decl");
1489 // Remove the decl only if it is contained.
1490 StoredDeclsList::DeclsTy *Vec = Pos->second.getAsVector();
1491 if ((Vec && is_contained(*Vec, ND)) || Pos->second.getAsDecl() == ND)
1492 Pos->second.remove(ND);
1493 }
1494 } while (DC->isTransparentContext() && (DC = DC->getParent()));
1495 }
1496 }
1497
1498 void DeclContext::addHiddenDecl(Decl *D) {
1499 assert(D->getLexicalDeclContext() == this &&
1500 "Decl inserted into wrong lexical context");
1501 assert(!D->getNextDeclInContext() && D != LastDecl &&
1502 "Decl already inserted into a DeclContext");
1503
1504 if (FirstDecl) {
1505 LastDecl->NextInContextAndBits.setPointer(D);
1506 LastDecl = D;
1507 } else {
1508 FirstDecl = LastDecl = D;
1509 }
1510
1511 // Notify a C++ record declaration that we've added a member, so it can
1512 // update its class-specific state.
1513 if (auto *Record = dyn_cast<CXXRecordDecl>(this))
1514 Record->addedMember(D);
1515
1516 // If this is a newly-created (not de-serialized) import declaration, wire
1517 // it in to the list of local import declarations.
1518 if (!D->isFromASTFile()) {
1519 if (auto *Import = dyn_cast<ImportDecl>(D))
1520 D->getASTContext().addedLocalImportDecl(Import);
1521 }
1522 }
1523
1524 void DeclContext::addDecl(Decl *D) {
1525 addHiddenDecl(D);
1526
1527 if (auto *ND = dyn_cast<NamedDecl>(D))
1528 ND->getDeclContext()->getPrimaryContext()->
1529 makeDeclVisibleInContextWithFlags(ND, false, true);
1530 }
1531
1532 void DeclContext::addDeclInternal(Decl *D) {
1533 addHiddenDecl(D);
1534
1535 if (auto *ND = dyn_cast<NamedDecl>(D))
1536 ND->getDeclContext()->getPrimaryContext()->
1537 makeDeclVisibleInContextWithFlags(ND, true, true);
1538 }
1539
1540 /// buildLookup - Build the lookup data structure with all of the
1541 /// declarations in this DeclContext (and any other contexts linked
1542 /// to it or transparent contexts nested within it) and return it.
1543 ///
1544 /// Note that the produced map may miss out declarations from an
1545 /// external source. If it does, those entries will be marked with
1546 /// the 'hasExternalDecls' flag.
1547 StoredDeclsMap *DeclContext::buildLookup() {
1548 assert(this == getPrimaryContext() && "buildLookup called on non-primary DC");
1549
1550 if (!hasLazyLocalLexicalLookups() &&
1551 !hasLazyExternalLexicalLookups())
1552 return LookupPtr;
1553
1554 SmallVector<DeclContext *, 2> Contexts;
1555 collectAllContexts(Contexts);
1556
1557 if (hasLazyExternalLexicalLookups()) {
1558 setHasLazyExternalLexicalLookups(false);
1559 for (auto *DC : Contexts) {
1560 if (DC->hasExternalLexicalStorage()) {
1561 bool LoadedDecls = DC->LoadLexicalDeclsFromExternalStorage();
1562 setHasLazyLocalLexicalLookups(
1563 hasLazyLocalLexicalLookups() | LoadedDecls );
1564 }
1565 }
1566
1567 if (!hasLazyLocalLexicalLookups())
1568 return LookupPtr;
1569 }
1570
1571 for (auto *DC : Contexts)
1572 buildLookupImpl(DC, hasExternalVisibleStorage());
1573
1574 // We no longer have any lazy decls.
1575 setHasLazyLocalLexicalLookups(false);
1576 return LookupPtr;
1577 }
1578
1579 /// buildLookupImpl - Build part of the lookup data structure for the
1580 /// declarations contained within DCtx, which will either be this
1581 /// DeclContext, a DeclContext linked to it, or a transparent context
1582 /// nested within it.
1583 void DeclContext::buildLookupImpl(DeclContext *DCtx, bool Internal) {
1584 for (auto *D : DCtx->noload_decls()) {
1585 // Insert this declaration into the lookup structure, but only if
1586 // it's semantically within its decl context. Any other decls which
1587 // should be found in this context are added eagerly.
1588 //
1589 // If it's from an AST file, don't add it now. It'll get handled by
1590 // FindExternalVisibleDeclsByName if needed. Exception: if we're not
1591 // in C++, we do not track external visible decls for the TU, so in
1592 // that case we need to collect them all here.
1593 if (auto *ND = dyn_cast<NamedDecl>(D))
1594 if (ND->getDeclContext() == DCtx && !shouldBeHidden(ND) &&
1595 (!ND->isFromASTFile() ||
1596 (isTranslationUnit() &&
1597 !getParentASTContext().getLangOpts().CPlusPlus)))
1598 makeDeclVisibleInContextImpl(ND, Internal);
1599
1600 // If this declaration is itself a transparent declaration context
1601 // or inline namespace, add the members of this declaration of that
1602 // context (recursively).
1603 if (auto *InnerCtx = dyn_cast<DeclContext>(D))
1604 if (InnerCtx->isTransparentContext() || InnerCtx->isInlineNamespace())
1605 buildLookupImpl(InnerCtx, Internal);
1606 }
1607 }
1608
1609 NamedDecl *const DeclContextLookupResult::SingleElementDummyList = nullptr;
1610
1611 DeclContext::lookup_result
1612 DeclContext::lookup(DeclarationName Name) const {
1613 assert(getDeclKind() != Decl::LinkageSpec &&
1614 getDeclKind() != Decl::Export &&
1615 "should not perform lookups into transparent contexts");
1616
1617 const DeclContext *PrimaryContext = getPrimaryContext();
1618 if (PrimaryContext != this)
1619 return PrimaryContext->lookup(Name);
1620
1621 // If we have an external source, ensure that any later redeclarations of this
1622 // context have been loaded, since they may add names to the result of this
1623 // lookup (or add external visible storage).
1624 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1625 if (Source)
1626 (void)cast<Decl>(this)->getMostRecentDecl();
1627
1628 if (hasExternalVisibleStorage()) {
1629 assert(Source && "external visible storage but no external source?");
1630
1631 if (hasNeedToReconcileExternalVisibleStorage())
1632 reconcileExternalVisibleStorage();
1633
1634 StoredDeclsMap *Map = LookupPtr;
1635
1636 if (hasLazyLocalLexicalLookups() ||
1637 hasLazyExternalLexicalLookups())
1638 // FIXME: Make buildLookup const?
1639 Map = const_cast<DeclContext*>(this)->buildLookup();
1640
1641 if (!Map)
1642 Map = CreateStoredDeclsMap(getParentASTContext());
1643
1644 // If we have a lookup result with no external decls, we are done.
1645 std::pair<StoredDeclsMap::iterator, bool> R =
1646 Map->insert(std::make_pair(Name, StoredDeclsList()));
1647 if (!R.second && !R.first->second.hasExternalDecls())
1648 return R.first->second.getLookupResult();
1649
1650 if (Source->FindExternalVisibleDeclsByName(this, Name) || !R.second) {
1651 if (StoredDeclsMap *Map = LookupPtr) {
1652 StoredDeclsMap::iterator I = Map->find(Name);
1653 if (I != Map->end())
1654 return I->second.getLookupResult();
1655 }
1656 }
1657
1658 return {};
1659 }
1660
1661 StoredDeclsMap *Map = LookupPtr;
1662 if (hasLazyLocalLexicalLookups() ||
1663 hasLazyExternalLexicalLookups())
1664 Map = const_cast<DeclContext*>(this)->buildLookup();
1665
1666 if (!Map)
1667 return {};
1668
1669 StoredDeclsMap::iterator I = Map->find(Name);
1670 if (I == Map->end())
1671 return {};
1672
1673 return I->second.getLookupResult();
1674 }
1675
1676 DeclContext::lookup_result
1677 DeclContext::noload_lookup(DeclarationName Name) {
1678 assert(getDeclKind() != Decl::LinkageSpec &&
1679 getDeclKind() != Decl::Export &&
1680 "should not perform lookups into transparent contexts");
1681
1682 DeclContext *PrimaryContext = getPrimaryContext();
1683 if (PrimaryContext != this)
1684 return PrimaryContext->noload_lookup(Name);
1685
1686 loadLazyLocalLexicalLookups();
1687 StoredDeclsMap *Map = LookupPtr;
1688 if (!Map)
1689 return {};
1690
1691 StoredDeclsMap::iterator I = Map->find(Name);
1692 return I != Map->end() ? I->second.getLookupResult()
1693 : lookup_result();
1694 }
1695
1696 // If we have any lazy lexical declarations not in our lookup map, add them
1697 // now. Don't import any external declarations, not even if we know we have
1698 // some missing from the external visible lookups.
1699 void DeclContext::loadLazyLocalLexicalLookups() {
1700 if (hasLazyLocalLexicalLookups()) {
1701 SmallVector<DeclContext *, 2> Contexts;
1702 collectAllContexts(Contexts);
1703 for (auto *Context : Contexts)
1704 buildLookupImpl(Context, hasExternalVisibleStorage());
1705 setHasLazyLocalLexicalLookups(false);
1706 }
1707 }
1708
1709 void DeclContext::localUncachedLookup(DeclarationName Name,
1710 SmallVectorImpl<NamedDecl *> &Results) {
1711 Results.clear();
1712
1713 // If there's no external storage, just perform a normal lookup and copy
1714 // the results.
1715 if (!hasExternalVisibleStorage() && !hasExternalLexicalStorage() && Name) {
1716 lookup_result LookupResults = lookup(Name);
1717 Results.insert(Results.end(), LookupResults.begin(), LookupResults.end());
1718 return;
1719 }
1720
1721 // If we have a lookup table, check there first. Maybe we'll get lucky.
1722 // FIXME: Should we be checking these flags on the primary context?
1723 if (Name && !hasLazyLocalLexicalLookups() &&
1724 !hasLazyExternalLexicalLookups()) {
1725 if (StoredDeclsMap *Map = LookupPtr) {
1726 StoredDeclsMap::iterator Pos = Map->find(Name);
1727 if (Pos != Map->end()) {
1728 Results.insert(Results.end(),
1729 Pos->second.getLookupResult().begin(),
1730 Pos->second.getLookupResult().end());
1731 return;
1732 }
1733 }
1734 }
1735
1736 // Slow case: grovel through the declarations in our chain looking for
1737 // matches.
1738 // FIXME: If we have lazy external declarations, this will not find them!
1739 // FIXME: Should we CollectAllContexts and walk them all here?
1740 for (Decl *D = FirstDecl; D; D = D->getNextDeclInContext()) {
1741 if (auto *ND = dyn_cast<NamedDecl>(D))
1742 if (ND->getDeclName() == Name)
1743 Results.push_back(ND);
1744 }
1745 }
1746
1747 DeclContext *DeclContext::getRedeclContext() {
1748 DeclContext *Ctx = this;
1749
1750 // In C, a record type is the redeclaration context for its fields only. If
1751 // we arrive at a record context after skipping anything else, we should skip
1752 // the record as well. Currently, this means skipping enumerations because
1753 // they're the only transparent context that can exist within a struct or
1754 // union.
1755 bool SkipRecords = getDeclKind() == Decl::Kind::Enum &&
1756 !getParentASTContext().getLangOpts().CPlusPlus;
1757
1758 // Skip through contexts to get to the redeclaration context. Transparent
1759 // contexts are always skipped.
1760 while ((SkipRecords && Ctx->isRecord()) || Ctx->isTransparentContext())
1761 Ctx = Ctx->getParent();
1762 return Ctx;
1763 }
1764
1765 DeclContext *DeclContext::getEnclosingNamespaceContext() {
1766 DeclContext *Ctx = this;
1767 // Skip through non-namespace, non-translation-unit contexts.
1768 while (!Ctx->isFileContext())
1769 Ctx = Ctx->getParent();
1770 return Ctx->getPrimaryContext();
1771 }
1772
1773 RecordDecl *DeclContext::getOuterLexicalRecordContext() {
1774 // Loop until we find a non-record context.
1775 RecordDecl *OutermostRD = nullptr;
1776 DeclContext *DC = this;
1777 while (DC->isRecord()) {
1778 OutermostRD = cast<RecordDecl>(DC);
1779 DC = DC->getLexicalParent();
1780 }
1781 return OutermostRD;
1782 }
1783
1784 bool DeclContext::InEnclosingNamespaceSetOf(const DeclContext *O) const {
1785 // For non-file contexts, this is equivalent to Equals.
1786 if (!isFileContext())
1787 return O->Equals(this);
1788
1789 do {
1790 if (O->Equals(this))
1791 return true;
1792
1793 const auto *NS = dyn_cast<NamespaceDecl>(O);
1794 if (!NS || !NS->isInline())
1795 break;
1796 O = NS->getParent();
1797 } while (O);
1798
1799 return false;
1800 }
1801
1802 void DeclContext::makeDeclVisibleInContext(NamedDecl *D) {
1803 DeclContext *PrimaryDC = this->getPrimaryContext();
1804 DeclContext *DeclDC = D->getDeclContext()->getPrimaryContext();
1805 // If the decl is being added outside of its semantic decl context, we
1806 // need to ensure that we eagerly build the lookup information for it.
1807 PrimaryDC->makeDeclVisibleInContextWithFlags(D, false, PrimaryDC == DeclDC);
1808 }
1809
1810 void DeclContext::makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
1811 bool Recoverable) {
1812 assert(this == getPrimaryContext() && "expected a primary DC");
1813
1814 if (!isLookupContext()) {
1815 if (isTransparentContext())
1816 getParent()->getPrimaryContext()
1817 ->makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
1818 return;
1819 }
1820
1821 // Skip declarations which should be invisible to name lookup.
1822 if (shouldBeHidden(D))
1823 return;
1824
1825 // If we already have a lookup data structure, perform the insertion into
1826 // it. If we might have externally-stored decls with this name, look them
1827 // up and perform the insertion. If this decl was declared outside its
1828 // semantic context, buildLookup won't add it, so add it now.
1829 //
1830 // FIXME: As a performance hack, don't add such decls into the translation
1831 // unit unless we're in C++, since qualified lookup into the TU is never
1832 // performed.
1833 if (LookupPtr || hasExternalVisibleStorage() ||
1834 ((!Recoverable || D->getDeclContext() != D->getLexicalDeclContext()) &&
1835 (getParentASTContext().getLangOpts().CPlusPlus ||
1836 !isTranslationUnit()))) {
1837 // If we have lazily omitted any decls, they might have the same name as
1838 // the decl which we are adding, so build a full lookup table before adding
1839 // this decl.
1840 buildLookup();
1841 makeDeclVisibleInContextImpl(D, Internal);
1842 } else {
1843 setHasLazyLocalLexicalLookups(true);
1844 }
1845
1846 // If we are a transparent context or inline namespace, insert into our
1847 // parent context, too. This operation is recursive.
1848 if (isTransparentContext() || isInlineNamespace())
1849 getParent()->getPrimaryContext()->
1850 makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
1851
1852 auto *DCAsDecl = cast<Decl>(this);
1853 // Notify that a decl was made visible unless we are a Tag being defined.
1854 if (!(isa<TagDecl>(DCAsDecl) && cast<TagDecl>(DCAsDecl)->isBeingDefined()))
1855 if (ASTMutationListener *L = DCAsDecl->getASTMutationListener())
1856 L->AddedVisibleDecl(this, D);
1857 }
1858
1859 void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
1860 // Find or create the stored declaration map.
1861 StoredDeclsMap *Map = LookupPtr;
1862 if (!Map) {
1863 ASTContext *C = &getParentASTContext();
1864 Map = CreateStoredDeclsMap(*C);
1865 }
1866
1867 // If there is an external AST source, load any declarations it knows about
1868 // with this declaration's name.
1869 // If the lookup table contains an entry about this name it means that we
1870 // have already checked the external source.
1871 if (!Internal)
1872 if (ExternalASTSource *Source = getParentASTContext().getExternalSource())
1873 if (hasExternalVisibleStorage() &&
1874 Map->find(D->getDeclName()) == Map->end())
1875 Source->FindExternalVisibleDeclsByName(this, D->getDeclName());
1876
1877 // Insert this declaration into the map.
1878 StoredDeclsList &DeclNameEntries = (*Map)[D->getDeclName()];
1879
1880 if (Internal) {
1881 // If this is being added as part of loading an external declaration,
1882 // this may not be the only external declaration with this name.
1883 // In this case, we never try to replace an existing declaration; we'll
1884 // handle that when we finalize the list of declarations for this name.
1885 DeclNameEntries.setHasExternalDecls();
1886 DeclNameEntries.AddSubsequentDecl(D);
1887 return;
1888 }
1889
1890 if (DeclNameEntries.isNull()) {
1891 DeclNameEntries.setOnlyValue(D);
1892 return;
1893 }
1894
1895 if (DeclNameEntries.HandleRedeclaration(D, /*IsKnownNewer*/!Internal)) {
1896 // This declaration has replaced an existing one for which
1897 // declarationReplaces returns true.
1898 return;
1899 }
1900
1901 // Put this declaration into the appropriate slot.
1902 DeclNameEntries.AddSubsequentDecl(D);
1903 }
1904
1905 UsingDirectiveDecl *DeclContext::udir_iterator::operator*() const {
1906 return cast<UsingDirectiveDecl>(*I);
1907 }
1908
1909 /// Returns iterator range [First, Last) of UsingDirectiveDecls stored within
1910 /// this context.
1911 DeclContext::udir_range DeclContext::using_directives() const {
1912 // FIXME: Use something more efficient than normal lookup for using
1913 // directives. In C++, using directives are looked up more than anything else.
1914 lookup_result Result = lookup(UsingDirectiveDecl::getName());
1915 return udir_range(Result.begin(), Result.end());
1916 }
1917
1918 //===----------------------------------------------------------------------===//
1919 // Creation and Destruction of StoredDeclsMaps. //
1920 //===----------------------------------------------------------------------===//
1921
1922 StoredDeclsMap *DeclContext::CreateStoredDeclsMap(ASTContext &C) const {
1923 assert(!LookupPtr && "context already has a decls map");
1924 assert(getPrimaryContext() == this &&
1925 "creating decls map on non-primary context");
1926
1927 StoredDeclsMap *M;
1928 bool Dependent = isDependentContext();
1929 if (Dependent)
1930 M = new DependentStoredDeclsMap();
1931 else
1932 M = new StoredDeclsMap();
1933 M->Previous = C.LastSDM;
1934 C.LastSDM = llvm::PointerIntPair<StoredDeclsMap*,1>(M, Dependent);
1935 LookupPtr = M;
1936 return M;
1937 }
1938
1939 void ASTContext::ReleaseDeclContextMaps() {
1940 // It's okay to delete DependentStoredDeclsMaps via a StoredDeclsMap
1941 // pointer because the subclass doesn't add anything that needs to
1942 // be deleted.
1943 StoredDeclsMap::DestroyAll(LastSDM.getPointer(), LastSDM.getInt());
1944 }
1945
1946 void StoredDeclsMap::DestroyAll(StoredDeclsMap *Map, bool Dependent) {
1947 while (Map) {
1948 // Advance the iteration before we invalidate memory.
1949 llvm::PointerIntPair<StoredDeclsMap*,1> Next = Map->Previous;
1950
1951 if (Dependent)
1952 delete static_cast<DependentStoredDeclsMap*>(Map);
1953 else
1954 delete Map;
1955
1956 Map = Next.getPointer();
1957 Dependent = Next.getInt();
1958 }
1959 }
1960
1961 DependentDiagnostic *DependentDiagnostic::Create(ASTContext &C,
1962 DeclContext *Parent,
1963 const PartialDiagnostic &PDiag) {
1964 assert(Parent->isDependentContext()
1965 && "cannot iterate dependent diagnostics of non-dependent context");
1966 Parent = Parent->getPrimaryContext();
1967 if (!Parent->LookupPtr)
1968 Parent->CreateStoredDeclsMap(C);
1969
1970 auto *Map = static_cast<DependentStoredDeclsMap *>(Parent->LookupPtr);
1971
1972 // Allocate the copy of the PartialDiagnostic via the ASTContext's
1973 // BumpPtrAllocator, rather than the ASTContext itself.
1974 PartialDiagnostic::Storage *DiagStorage = nullptr;
1975 if (PDiag.hasStorage())
1976 DiagStorage = new (C) PartialDiagnostic::Storage;
1977
1978 auto *DD = new (C) DependentDiagnostic(PDiag, DiagStorage);
1979
1980 // TODO: Maybe we shouldn't reverse the order during insertion.
1981 DD->NextDiagnostic = Map->FirstDiagnostic;
1982 Map->FirstDiagnostic = DD;
1983
1984 return DD;
1985 }
getRealizedPlatform
static StringRef getRealizedPlatform(const AvailabilityAttr *A, const ASTContext &Context)
Definition: DeclBase.cpp:468
clang::AR_Unavailable
Definition: DeclBase.h:78
clang::Builtin::ID
ID
Definition: Builtins.h:46
ASTContext.h
Defines the clang::ASTContext interface.
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1783
clang::StoredDeclsList::setHasExternalDecls
void setHasExternalDecls()
Definition: DeclContextInternals.h:86
clang::ASTContext::getDeclAttrs
AttrVec & getDeclAttrs(const Decl *D)
Retrieve the attributes for the given declaration.
Definition: ASTContext.cpp:1520
clang::DeclContext::localUncachedLookup
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:1709
clang::TargetInfo::getPlatformMinVersion
VersionTuple getPlatformMinVersion() const
Retrieve the minimum desired version of the platform, to which the program should be compiled...
Definition: TargetInfo.h:1269
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static DeclContext * castToDeclContext(const Decl *)
Definition: DeclBase.cpp:879
clang::Decl::getOwningModule
Module * getOwningModule() const
Get the module that owns this declaration (for visibility purposes).
Definition: DeclBase.h:759
clang::PointerType
PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:2614
clang::PointerType::getPointeeType
QualType getPointeeType() const
Definition: Type.h:2627
shouldBeHidden
static bool shouldBeHidden(NamedDecl *D)
shouldBeHidden - Determine whether a declaration which was declared within its semantic context shoul...
Definition: DeclBase.cpp:1414
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:654
clang::Type::isBlockPointerType
bool isBlockPointerType() const
Definition: Type.h:6512
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TagDecl * getDefinition() const
Returns the TagDecl that actually defines this struct/union/class/enum.
Definition: Decl.cpp:4177
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const char * getDeclKindName() const
Definition: DeclBase.cpp:123
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llvm::PointerIntPair< Decl *, 2, ModuleOwnershipKind > NextInContextAndBits
The next declaration within the same lexical DeclContext.
Definition: DeclBase.h:244
clang::StoredDeclsList::AddSubsequentDecl
void AddSubsequentDecl(NamedDecl *D)
AddSubsequentDecl - This is called on the second and later decl when it is not a redeclaration to mer...
Definition: DeclContextInternals.h:189
clang::ExternalASTSource::FindExternalLexicalDecls
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...
Definition: ExternalASTSource.cpp:118
clang::ExternalASTSource::Deserializing
RAII class for safely pairing a StartedDeserializing call with FinishedDeserializing.
Definition: ExternalASTSource.h:78
clang::Decl::castFromDeclContext
static Decl * castFromDeclContext(const DeclContext *)
Definition: DeclBase.cpp:860
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bool isClosure() const
Definition: DeclBase.h:1817
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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:986
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void setAttrs(const AttrVec &Attrs)
Definition: DeclBase.h:486
isLinkageSpecContext
static bool isLinkageSpecContext(const DeclContext *DC, LinkageSpecDecl::LanguageIDs ID)
Definition: DeclBase.cpp:1132
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:66
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3422
Type.h
C Language Family Type Representation.
clang::AR_NotYetIntroduced
Definition: DeclBase.h:76
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const char * getDeclKindName() const
Definition: DeclBase.cpp:155
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:88
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specific_attr_iterator - Iterates over a subrange of an AttrVec, only providing attributes that are o...
Definition: AttrIterator.h:34
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Definition: PartialDiagnostic.h:34
clang::Decl::add
static void add(Kind k)
Definition: DeclBase.cpp:193
DeclTemplate.h
Defines the C++ template declaration subclasses.
clang::Decl::getPreviousDecl
Decl * getPreviousDecl()
Retrieve the previous declaration that declares the same entity as this declaration, or NULL if there is no previous declaration.
Definition: DeclBase.h:960
ObjCRuntime.h
Defines types useful for describing an Objective-C runtime.
clang::DeclContext::~DeclContext
~DeclContext()
clang::NamespaceDecl
Represent a C++ namespace.
Definition: Decl.h:497
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const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:707
DeclObjC.h
clang::Decl::getIdentifierNamespace
unsigned getIdentifierNamespace() const
Definition: DeclBase.h:799
getNonClosureContext
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:975
clang::Decl::getParentFunctionOrMethod
const DeclContext * getParentFunctionOrMethod() const
If this decl is defined inside a function/method/block it returns the corresponding DeclContext...
Definition: DeclBase.cpp:254
clang::Decl::Access
unsigned Access
Access - Used by C++ decls for the access specifier.
Definition: DeclBase.h:325
clang::StoredDeclsList::HandleRedeclaration
bool HandleRedeclaration(NamedDecl *D, bool IsKnownNewer)
HandleRedeclaration - If this is a redeclaration of an existing decl, replace the old one with D and ...
Definition: DeclContextInternals.h:164
ASTLambda.h
This file provides some common utility functions for processing Lambda related AST Constructs...
clang::Decl::hasOwningModule
bool hasOwningModule() const
Is this declaration owned by some module?
Definition: DeclBase.h:754
clang::Decl::getASTMutationListener
ASTMutationListener * getASTMutationListener() const
Definition: DeclBase.cpp:381
clang::Type::getAs
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:7002
clang::Decl::hasLocalOwningModuleStorage
bool hasLocalOwningModuleStorage() const
Definition: DeclBase.cpp:119
clang::DeclContext::isExternCContext
bool isExternCContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1142
clang::Decl::isInvalidDecl
bool isInvalidDecl() const
Definition: DeclBase.h:553
clang::Decl::getExternalSourceSymbolAttr
ExternalSourceSymbolAttr * getExternalSourceSymbolAttr() const
Looks on this and related declarations for an applicable external source symbol attribute.
Definition: DeclBase.cpp:435
clang::Decl::isParameterPack
bool isParameterPack() const
Whether this declaration is a parameter pack.
Definition: DeclBase.cpp:211
clang::DeclContext::removeDecl
void removeDecl(Decl *D)
Removes a declaration from this context.
Definition: DeclBase.cpp:1444
clang::ObjCRuntime::hasWeakClassImport
bool hasWeakClassImport() const
Does this runtime support weakly importing classes?
Definition: ObjCRuntime.h:361
clang::Decl::IDNS_Type
Types, declared with &#39;struct foo&#39;, typedefs, etc.
Definition: DeclBase.h:132
clang::Decl::isLexicallyWithinFunctionOrMethod
bool isLexicallyWithinFunctionOrMethod() const
Returns true if this declaration lexically is inside a function.
Definition: DeclBase.cpp:335
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3748
clang::NamedDecl::getDeclName
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Definition: Decl.h:272
clang::DeclContext::Encloses
bool Encloses(const DeclContext *DC) const
Determine whether this declaration context encloses the declaration context DC.
Definition: DeclBase.cpp:1161
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:57
clang::Decl::isInAnonymousNamespace
bool isInAnonymousNamespace() const
Definition: DeclBase.cpp:347
clang::IdentifierInfo::isStr
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
Definition: IdentifierTable.h:136
clang::ExternalASTSource::SetExternalVisibleDeclsForName
static DeclContextLookupResult SetExternalVisibleDeclsForName(const DeclContext *DC, DeclarationName Name, ArrayRef< NamedDecl *> Decls)
Definition: DeclBase.cpp:1341
clang::BlockPointerType::getPointeeType
QualType getPointeeType() const
Definition: Type.h:2731
clang::SourceLocation::print
void print(raw_ostream &OS, const SourceManager &SM) const
Definition: SourceLocation.cpp:43
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:168
clang::DeclContextLookupResult
The results of name lookup within a DeclContext.
Definition: DeclBase.h:1195
clang::DeclContextLookupResult::end
iterator end() const
Definition: DeclBase.h:1237
size_t
__SIZE_TYPE__ size_t
The unsigned integer type of the result of the sizeof operator.
Definition: opencl-c-base.h:40
clang::DeclContext::Equals
bool Equals(const DeclContext *DC) const
Determine whether this declaration context is equivalent to the declaration context DC...
Definition: DeclBase.h:1908
max
__DEVICE__ int max(int __a, int __b)
Definition: __clang_cuda_device_functions.h:1628
DependentDiagnostic.h
clang::Module
Describes a module or submodule.
Definition: Module.h:64
llvm::SmallVectorImpl
Definition: LLVM.h:36
clang::AR_Available
Definition: DeclBase.h:75
clang::ExternalASTSource::updateOutOfDateIdentifier
virtual void updateOutOfDateIdentifier(IdentifierInfo &II)
Update an out-of-date identifier.
Definition: ExternalASTSource.h:143
clang::PartialDiagnostic::Storage
Definition: PartialDiagnostic.h:44
clang::DeclContext::getEnclosingNamespaceContext
DeclContext * getEnclosingNamespaceContext()
Retrieve the nearest enclosing namespace context.
Definition: DeclBase.cpp:1765
clang::LinkageSpecDecl::lang_c
Definition: DeclCXX.h:2787
clang::ExternalASTSource::FindExternalVisibleDeclsByName
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...
Definition: ExternalASTSource.cpp:111
clang::Decl::IDNS_Namespace
Namespaces, declared with &#39;namespace foo {}&#39;.
Definition: DeclBase.h:142
clang::Decl::isReferenced
bool isReferenced() const
Whether any declaration of this entity was referenced.
Definition: DeclBase.cpp:423
LLVM.h
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
clang::Decl::getModuleOwnershipKind
ModuleOwnershipKind getModuleOwnershipKind() const
Get the kind of module ownership for this declaration.
Definition: DeclBase.h:786
clang::DeclContext::buildLookup
StoredDeclsMap * buildLookup()
Ensure the lookup structure is fully-built and return it.
Definition: DeclBase.cpp:1547
clang::ExternalASTSource::SetNoExternalVisibleDeclsForName
static DeclContextLookupResult SetNoExternalVisibleDeclsForName(const DeclContext *DC, DeclarationName Name)
Definition: DeclBase.cpp:1326
clang::TranslationUnitDecl::getASTContext
ASTContext & getASTContext() const
Definition: Decl.h:94
clang::StoredDeclsList::isNull
bool isNull() const
Definition: DeclContextInternals.h:68
clang::ASTContext::eraseDeclAttrs
void eraseDeclAttrs(const Decl *D)
Erase the attributes corresponding to the given declaration.
Definition: ASTContext.cpp:1531
clang::Decl::getLexicalDeclContext
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC)...
Definition: DeclBase.h:828
clang::Decl::IDNS_Label
Labels, declared with &#39;x:&#39; and referenced with &#39;goto x&#39;.
Definition: DeclBase.h:119
clang::Decl::setLocalOwningModule
void setLocalOwningModule(Module *M)
Definition: DeclBase.h:746
clang::isLambdaCallOperator
bool isLambdaCallOperator(const CXXMethodDecl *MD)
Definition: ASTLambda.h:27
clang::LinkageSpecDecl
Represents a linkage specification.
Definition: DeclCXX.h:2778
llvm::ArrayRef
Definition: LLVM.h:31
ASTMutationListener.h
clang::Decl::IDNS_Ordinary
Ordinary names.
Definition: DeclBase.h:146
clang::Decl::getCanonicalDecl
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:877
clang::DeclContext::addDeclInternal
void addDeclInternal(Decl *D)
Add the declaration D into this context, but suppress searches for external declarations with the sam...
Definition: DeclBase.cpp:1532
clang::AS_none
Definition: Specifiers.h:117
clang::DeclContext::lookup
lookup_result lookup(DeclarationName Name) const
lookup - Find the declarations (if any) with the given Name in this context.
Definition: DeclBase.cpp:1612
clang::AvailabilityResult
AvailabilityResult
Captures the result of checking the availability of a declaration.
Definition: DeclBase.h:74
ExternalASTSource.h
Parent
NodeId Parent
Definition: ASTDiff.cpp:191
clang::Decl::getNextDeclInContext
Decl * getNextDeclInContext()
Definition: DeclBase.h:435
clang::Decl::canBeWeakImported
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:640
clang::DeclContext::using_directives
udir_range using_directives() const
Returns iterator range [First, Last) of UsingDirectiveDecls stored within this context.
Definition: DeclBase.cpp:1911
clang::Decl::getAvailability
AvailabilityResult getAvailability(std::string *Message=nullptr, VersionTuple EnclosingVersion=VersionTuple(), StringRef *RealizedPlatform=nullptr) const
Determine the availability of the given declaration.
Definition: DeclBase.cpp:574
clang::Decl::IDNS_ObjCProtocol
Objective C @protocol.
Definition: DeclBase.h:149
clang::DeclContext::udir_range
llvm::iterator_range< udir_iterator > udir_range
Definition: DeclBase.h:2314
clang::DeclContext::noload_decls
decl_range noload_decls() const
noload_decls_begin/end - Iterate over the declarations stored in this context that are currently load...
Definition: DeclBase.h:2041
clang::Decl::getFunctionType
const FunctionType * getFunctionType(bool BlocksToo=true) const
Looks through the Decl&#39;s underlying type to extract a FunctionType when possible. ...
Definition: DeclBase.cpp:954
clang::StoredDeclsList::removeExternalDecls
void removeExternalDecls()
Remove any declarations which were imported from an external AST source.
Definition: DeclContextInternals.h:125
clang::Decl::getID
int64_t getID() const
Definition: DeclBase.cpp:950
clang::DeclContext::isInlineNamespace
bool isInlineNamespace() const
Definition: DeclBase.cpp:1070
clang::DeclContext::getLexicalParent
DeclContext * getLexicalParent()
getLexicalParent - Returns the containing lexical DeclContext.
Definition: DeclBase.h:1800
clang::BlockDecl
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:4037
clang::Decl::getDefiningAttr
const Attr * getDefiningAttr() const
Return this declaration&#39;s defining attribute if it has one.
Definition: DeclBase.cpp:460
LangOptions.h
Defines the clang::LangOptions interface.
clang::ReferenceType::getPointeeType
QualType getPointeeType() const
Definition: Type.h:2771
Label
std::string Label
Definition: UsingDeclarationsSorter.cpp:69
clang::Decl::getIdentifierNamespaceForKind
static unsigned getIdentifierNamespaceForKind(Kind DK)
Definition: DeclBase.cpp:689
clang::DeclContext::containsDecl
bool containsDecl(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1401
clang::Type::castAs
const T * castAs() const
Member-template castAs<specific type>.
Definition: Type.h:7067
V
#define V(N, I)
Definition: ASTContext.h:2941
clang::Type::isFunctionReferenceType
bool isFunctionReferenceType() const
Definition: Type.h:6545
clang::Decl::setInvalidDecl
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
DeclBase.h
clang::Decl::IDNS_OMPReduction
This declaration is an OpenMP user defined reduction construction.
Definition: DeclBase.h:180
clang::DeclContext::InEnclosingNamespaceSetOf
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:1784
clang::Decl::getMostRecentDecl
Decl * getMostRecentDecl()
Retrieve the most recent declaration that declares the same entity as this declaration (which may be ...
Definition: DeclBase.h:975
clang::Decl::isLocalExternDecl
bool isLocalExternDecl()
Determine whether this is a block-scope declaration with linkage.
Definition: DeclBase.h:1060
clang::DeclContext::isFileContext
bool isFileContext() const
Definition: DeclBase.h:1854
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:438
clang::DeclContext::noload_lookup
lookup_result noload_lookup(DeclarationName Name)
Find the declarations with the given name that are visible within this context; don&#39;t attempt to retr...
Definition: DeclBase.cpp:1677
clang::DeclContext::getNonClosureAncestor
Decl * getNonClosureAncestor()
Find the nearest non-closure ancestor of this context, i.e.
Definition: DeclBase.cpp:998
clang::ASTMutationListener
An abstract interface that should be implemented by listeners that want to be notified when an AST en...
Definition: ASTMutationListener.h:46
clang::Decl::isTemplateParameter
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:2458
clang::Decl::isTemplateParameterPack
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack...
Definition: DeclBase.cpp:201
clang::DeclContext::containsDeclAndLoad
bool containsDeclAndLoad(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1406
clang::Decl::IDNS_OMPMapper
This declaration is an OpenMP user defined mapper.
Definition: DeclBase.h:183
IdentifierTable.h
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
clang::DeclContext::isFunctionOrMethod
bool isFunctionOrMethod() const
Definition: DeclBase.h:1836
Stmt.h
clang::PartialDiagnostic::hasStorage
bool hasStorage() const
Definition: PartialDiagnostic.h:333
clang::LangOptions::ObjCRuntime
clang::ObjCRuntime ObjCRuntime
Definition: LangOptions.h:257
clang::Decl::ModuleOwnershipKind::VisibleWhenImported
This declaration has an owning module, and is visible when that module is imported.
clang::Decl::getMaxAlignment
unsigned getMaxAlignment() const
getMaxAlignment - return the maximum alignment specified by attributes on this decl, 0 if there are none.
Definition: DeclBase.cpp:385
clang::DeclContext::getParent
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1784
clang::DeclContext::collectAllContexts
void collectAllContexts(SmallVectorImpl< DeclContext *> &Contexts)
Collects all of the declaration contexts that are semantically connected to this declaration context...
Definition: DeclBase.cpp:1240
clang::SourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:217
clang::DeclContext::isDependentContext
bool isDependentContext() const
Determines whether this context is dependent on a template parameter.
Definition: DeclBase.cpp:1091
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
SM
const SourceManager & SM
Definition: Format.cpp:1685
clang::Decl::setDeclContext
void setDeclContext(DeclContext *DC)
setDeclContext - Set both the semantic and lexical DeclContext to DC.
Definition: DeclBase.cpp:295
clang::AttrVec
SmallVector< Attr *, 4 > AttrVec
AttrVec - A vector of Attr, which is how they are stored on the AST.
Definition: AttrIterator.h:29
clang::Decl::getFriendObjectKind
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so...
Definition: DeclBase.h:1111
clang::ASTMutationListener::DeclarationMarkedUsed
virtual void DeclarationMarkedUsed(const Decl *D)
A declaration is marked used which was not previously marked used.
Definition: ASTMutationListener.h:114
clang::DeclContext::decls_empty
bool decls_empty() const
Definition: DeclBase.cpp:1394
clang::Decl::getAttrs
AttrVec & getAttrs()
Definition: DeclBase.h:490
clang::Decl::hasAttrs
bool hasAttrs() const
Definition: DeclBase.h:484
clang::ExternalASTSource
Abstract interface for external sources of AST nodes.
Definition: ExternalASTSource.h:62
clang::Decl::isTemplateDecl
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:226
clang::DeclContext::getDeclKind
Decl::Kind getDeclKind() const
Definition: DeclBase.h:1777
clang::DeclContext::makeDeclVisibleInContext
void makeDeclVisibleInContext(NamedDecl *D)
Makes a declaration visible within this context.
Definition: DeclBase.cpp:1802
clang::StoredDeclsList::getLookupResult
DeclContext::lookup_result getLookupResult()
getLookupResult - Return an array of all the decls that this list represents.
Definition: DeclContextInternals.h:143
clang::AR_Deprecated
Definition: DeclBase.h:77
Attr.h
clang::Decl::getAsFunction
FunctionDecl * getAsFunction() LLVM_READONLY
Returns the function itself, or the templated function if this is a function template.
Definition: DeclBase.cpp:218
clang::TargetInfo::getPlatformName
StringRef getPlatformName() const
Retrieve the name of the platform as it is used in the availability attribute.
Definition: TargetInfo.h:1265
clang::LinkageSpecDecl::lang_cxx
Definition: DeclCXX.h:2787
clang::Decl::getVersionIntroduced
VersionTuple getVersionIntroduced() const
Retrieve the version of the target platform in which this declaration was introduced.
Definition: DeclBase.cpp:626
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::Decl::IDNS_Member
Members, declared with object declarations within tag definitions.
Definition: DeclBase.h:138
clang::Decl::setModuleOwnershipKind
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:791
clang::DeclContext::decls_begin
decl_iterator decls_begin() const
Definition: DeclBase.cpp:1388
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3219
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:377
clang::DependentStoredDeclsMap
Definition: DeclContextInternals.h:250
clang::AS_public
Definition: Specifiers.h:114
clang::DeclContext::isStdNamespace
bool isStdNamespace() const
Definition: DeclBase.cpp:1075
AttrIterator.h
DeclOpenMP.h
This file defines OpenMP nodes for declarative directives.
clang::PrettyStackTraceDecl::print
void print(raw_ostream &OS) const override
Definition: DeclBase.cpp:268
clang::DeclContext::DeclContext
DeclContext(Decl::Kind K)
Definition: DeclBase.cpp:1006
llvm::SmallVector
Definition: LLVM.h:35
clang::Decl::isFromASTFile
bool isFromASTFile() const
Determine whether this declaration came from an AST file (such as a precompiled header or module) rat...
Definition: DeclBase.h:702
clang::DeclContext::udir_iterator::operator*
UsingDirectiveDecl * operator*() const
Definition: DeclBase.cpp:1905
clang::Decl::isUsed
bool isUsed(bool CheckUsedAttr=true) const
Whether any (re-)declaration of the entity was used, meaning that a definition is required...
Definition: DeclBase.cpp:398
clang::StoredDeclsList
An array of decls optimized for the common case of only containing one entry.
Definition: DeclContextInternals.h:34
clang::Decl::dropAttrs
void dropAttrs()
Definition: DeclBase.cpp:825
clang::Decl::isWeakImported
bool isWeakImported() const
Determine whether this is a weak-imported symbol.
Definition: DeclBase.cpp:670
clang::ASTContext::Allocate
void * Allocate(size_t Size, unsigned Align=8) const
Definition: ASTContext.h:686
clang::DeclContext::decl_iterator
decl_iterator - Iterates through the declarations stored within this context.
Definition: DeclBase.h:1990
clang::StoredDeclsMap
Definition: DeclContextInternals.h:238
clang::Decl::redecls
redecl_range redecls() const
Returns an iterator range for all the redeclarations of the same decl.
Definition: DeclBase.h:948
Decl.h
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::Decl::updateOutOfDate
void updateOutOfDate(IdentifierInfo &II) const
Update a potentially out-of-date declaration.
Definition: DeclBase.cpp:63
clang::SourceLocation::isValid
bool isValid() const
Return true if this is a valid SourceLocation object.
Definition: SourceLocation.h:106
clang::ExternalASTSource::getModule
virtual Module * getModule(unsigned ID)
Retrieve the module that corresponds to the given module ID.
Definition: ExternalASTSource.h:162
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1271
clang::TemplateDecl
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:402
clang::DeclContext::isRecord
bool isRecord() const
Definition: DeclBase.h:1863
clang::Decl::attrs
attr_range attrs() const
Definition: DeclBase.h:501
clang::DeclContext::getOuterLexicalRecordContext
RecordDecl * getOuterLexicalRecordContext()
Retrieve the outermost lexically enclosing record context.
Definition: DeclBase.cpp:1773
clang::DeclarationName
The name of a declaration.
Definition: DeclarationName.h:145
clang::Decl::getKind
Kind getKind() const
Definition: DeclBase.h:432
clang::Decl::getNonClosureContext
Decl * getNonClosureContext()
Find the innermost non-closure ancestor of this declaration, walking up through blocks, lambdas, etc.
Definition: DeclBase.cpp:994
clang::Decl::IDNS_Tag
Tags, declared with &#39;struct foo;&#39; and referenced with &#39;struct foo&#39;.
Definition: DeclBase.h:127
clang::ASTContext::getAllocator
llvm::BumpPtrAllocator & getAllocator() const
Definition: ASTContext.h:682
clang::ASTContext::getExternalSource
ExternalASTSource * getExternalSource() const
Retrieve a pointer to the external AST source associated with this AST context, if any...
Definition: ASTContext.h:1086
clang::DependentDiagnostic
A dependently-generated diagnostic.
Definition: DependentDiagnostic.h:36
clang::BlockPointerType
Pointer to a block type.
Definition: Type.h:2716
DeclContextInternals.h
clang::DependentDiagnostic::Create
static DependentDiagnostic * Create(ASTContext &Context, DeclContext *Parent, AccessNonce _, SourceLocation Loc, bool IsMemberAccess, AccessSpecifier AS, NamedDecl *TargetDecl, CXXRecordDecl *NamingClass, QualType BaseObjectType, const PartialDiagnostic &PDiag)
Definition: DependentDiagnostic.h:40
clang::Decl::setIsUsed
void setIsUsed()
Set whether the declaration is used, in the sense of odr-use.
Definition: DeclBase.h:573
DeclFriend.h
clang::LinkageSpecDecl::LanguageIDs
LanguageIDs
Represents the language in a linkage specification.
Definition: DeclCXX.h:2787
clang::Decl::getAttr
T * getAttr() const
Definition: DeclBase.h:538
clang::Decl::getOwningModuleID
unsigned getOwningModuleID() const
Retrieve the global ID of the module that owns this particular declaration.
Definition: DeclBase.h:714
clang::Decl::~Decl
virtual ~Decl()
clang::StoredDeclsList::setOnlyValue
void setOnlyValue(NamedDecl *ND)
Definition: DeclContextInternals.h:97
clang::ReferenceType
Base for LValueReferenceType and RValueReferenceType.
Definition: Type.h:2750
clang::DeclContext::getRedeclContext
DeclContext * getRedeclContext()
getRedeclContext - Retrieve the context in which an entity conflicts with other entities of the same ...
Definition: DeclBase.cpp:1747
clang::DeclContext::getExternCContext
const LinkageSpecDecl * getExternCContext() const
Retrieve the nearest enclosing C linkage specification context.
Definition: DeclBase.cpp:1146
clang::DeclContext::addDecl
void addDecl(Decl *D)
Add the declaration D into this context.
Definition: DeclBase.cpp:1524
PartialDiagnostic.h
Implements a partial diagnostic that can be emitted anwyhere in a DiagnosticBuilder stream...
clang::Decl::markUsed
void markUsed(ASTContext &C)
Mark the declaration used, in the sense of odr-use.
Definition: DeclBase.cpp:413
clang::ASTContext::getASTMutationListener
ASTMutationListener * getASTMutationListener() const
Retrieve a pointer to the AST mutation listener associated with this AST context, if any...
Definition: ASTContext.h:1101
DeclCXX.h
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate.h) and friends (in DeclFriend.h).
SourceLocation.h
Defines the clang::SourceLocation class and associated facilities.
clang::DeclContext::lookup_result
DeclContextLookupResult lookup_result
Definition: DeclBase.h:2237
clang::DeclContext::addHiddenDecl
void addHiddenDecl(Decl *D)
Add the declaration D to this context without modifying any lookup tables.
Definition: DeclBase.cpp:1498
clang::SourceLocation::isInvalid
bool isInvalid() const
Definition: SourceLocation.h:107
clang::DeclContext::BuildDeclChain
static std::pair< Decl *, Decl * > BuildDeclChain(ArrayRef< Decl *> Decls, bool FieldsAlreadyLoaded)
Build up a chain of declarations.
Definition: DeclBase.cpp:1257
clang::AttrSyntax::C
clang::Attr::isInherited
bool isInherited() const
Definition: Attr.h:94
clang::DeclContext::getLookupParent
DeclContext * getLookupParent()
Find the parent context of this context that will be used for unqualified name lookup.
Definition: DeclBase.cpp:1042
clang::Decl::addAttr
void addAttr(Attr *A)
Definition: DeclBase.cpp:832
clang::DeclContextLookupResult::begin
iterator begin() const
Definition: DeclBase.h:1236
clang::DeclContext::classof
static bool classof(const Decl *D)
Definition: DeclBase.cpp:1016
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::DeclContext::getParentASTContext
ASTContext & getParentASTContext() const
Definition: DeclBase.h:1813
clang::FunctionDecl::getSourceRange
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: Decl.cpp:3868
clang::Decl::Kind
Kind
Lists the kind of concrete classes of Decl.
Definition: DeclBase.h:91
clang::TranslationUnitDecl
The top declaration context.
Definition: Decl.h:82
clang::StoredDeclsMap::DestroyAll
static void DestroyAll(StoredDeclsMap *Map, bool Dependent)
Definition: DeclBase.cpp:1946
clang::Decl::PrintStats
static void PrintStats()
Definition: DeclBase.cpp:169
clang::NamedDecl::getMostRecentDecl
NamedDecl * getMostRecentDecl()
Definition: Decl.h:428
clang::DeclContext::getPrimaryContext
DeclContext * getPrimaryContext()
getPrimaryContext - There may be many different declarations of the same entity (including forward de...
Definition: DeclBase.cpp:1171
clang::LangOptions::trackLocalOwningModule
bool trackLocalOwningModule() const
Do we need to track the owning module for a local declaration?
Definition: LangOptions.h:318
clang::Decl::EnableStatistics
static void EnableStatistics()
Definition: DeclBase.cpp:165
clang::Decl::setLexicalDeclContext
void setLexicalDeclContext(DeclContext *DC)
Definition: DeclBase.cpp:299
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:223
clang::DeclContext::isTranslationUnit
bool isTranslationUnit() const
Definition: DeclBase.h:1859
clang::Decl::setAccess
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:468
clang::Decl::getDescribedTemplate
TemplateDecl * getDescribedTemplate() const
If this is a declaration that describes some template, this method returns that template declaration...
Definition: DeclBase.cpp:230
clang::UsingDirectiveDecl
Represents C++ using-directive.
Definition: DeclCXX.h:2863
clang::Decl::hasDefiningAttr
bool hasDefiningAttr() const
Return true if this declaration has an attribute which acts as definition of the entity, such as &#39;alias&#39; or &#39;ifunc&#39;.
Definition: DeclBase.cpp:456
clang::Type::isFunctionPointerType
bool isFunctionPointerType() const
Definition: Type.h:6538
clang::ASTContext::addedLocalImportDecl
void addedLocalImportDecl(ImportDecl *Import)
Notify the AST context that a new import declaration has been parsed or implicitly created within thi...
Definition: ASTContext.cpp:1685
clang::Decl::isInStdNamespace
bool isInStdNamespace() const
Definition: DeclBase.cpp:357
clang::Decl::getTranslationUnitDecl
TranslationUnitDecl * getTranslationUnitDecl()
Definition: DeclBase.cpp:362
clang::ASTContext::getLangOpts
const LangOptions & getLangOpts() const
Definition: ASTContext.h:724
clang::DeclContext::getInnermostBlockDecl
const BlockDecl * getInnermostBlockDecl() const
Return this DeclContext if it is a BlockDecl.
Definition: DeclBase.cpp:1058
clang::DeclContext::isExternCXXContext
bool isExternCXXContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1157
clang::Decl::isTemplated
bool isTemplated() const
Determine whether this declaration is a templated entity (whether it is.
Definition: DeclBase.cpp:243
clang::Decl::getBodyRBrace
SourceLocation getBodyRBrace() const
getBodyRBrace - Gets the right brace of the body, if a body exists.
Definition: DeclBase.cpp:898
clang::Attr
Attr - This represents one attribute.
Definition: Attr.h:45
CheckAvailability
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:490
clang::TagDecl::isBeingDefined
bool isBeingDefined() const
Return true if this decl is currently being defined.
Definition: Decl.h:3344
clang::Decl::IDNS_Using
This declaration is a using declaration.
Definition: DeclBase.h:165
clang::DeclContext::isTransparentContext
bool isTransparentContext() const
isTransparentContext - Determines whether this context is a "transparent" context, meaning that the members declared in this context are semantically declared in the nearest enclosing non-transparent (opaque) context but are lexically declared in this context.
Definition: DeclBase.cpp:1123