clang 8.0.0

DeclBase.cpp
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1 //===- DeclBase.cpp - Declaration AST Node Implementation -----------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Decl and DeclContext classes.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "clang/AST/DeclBase.h"
15 #include "clang/AST/ASTContext.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 *), 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 *Parm = dyn_cast<ParmVarDecl>(this))
213 return Parm->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 return getDeclContext()->isStdNamespace();
359 }
360
361 TranslationUnitDecl *Decl::getTranslationUnitDecl() {
362 if (auto *TUD = dyn_cast<TranslationUnitDecl>(this))
363 return TUD;
364
365 DeclContext *DC = getDeclContext();
366 assert(DC && "This decl is not contained in a translation unit!");
367
368 while (!DC->isTranslationUnit()) {
369 DC = DC->getParent();
370 assert(DC && "This decl is not contained in a translation unit!");
371 }
372
373 return cast<TranslationUnitDecl>(DC);
374 }
375
376 ASTContext &Decl::getASTContext() const {
377 return getTranslationUnitDecl()->getASTContext();
378 }
379
380 ASTMutationListener *Decl::getASTMutationListener() const {
381 return getASTContext().getASTMutationListener();
382 }
383
384 unsigned Decl::getMaxAlignment() const {
385 if (!hasAttrs())
386 return 0;
387
388 unsigned Align = 0;
389 const AttrVec &V = getAttrs();
390 ASTContext &Ctx = getASTContext();
391 specific_attr_iterator<AlignedAttr> I(V.begin()), E(V.end());
392 for (; I != E; ++I)
393 Align = std::max(Align, I->getAlignment(Ctx));
394 return Align;
395 }
396
397 bool Decl::isUsed(bool CheckUsedAttr) const {
398 const Decl *CanonD = getCanonicalDecl();
399 if (CanonD->Used)
400 return true;
401
402 // Check for used attribute.
403 // Ask the most recent decl, since attributes accumulate in the redecl chain.
404 if (CheckUsedAttr && getMostRecentDecl()->hasAttr<UsedAttr>())
405 return true;
406
407 // The information may have not been deserialized yet. Force deserialization
408 // to complete the needed information.
409 return getMostRecentDecl()->getCanonicalDecl()->Used;
410 }
411
412 void Decl::markUsed(ASTContext &C) {
413 if (isUsed(false))
414 return;
415
416 if (C.getASTMutationListener())
417 C.getASTMutationListener()->DeclarationMarkedUsed(this);
418
419 setIsUsed();
420 }
421
422 bool Decl::isReferenced() const {
423 if (Referenced)
424 return true;
425
426 // Check redeclarations.
427 for (const auto *I : redecls())
428 if (I->Referenced)
429 return true;
430
431 return false;
432 }
433
434 bool Decl::isExported() const {
435 if (isModulePrivate())
436 return false;
437 // Namespaces are always exported.
438 if (isa<TranslationUnitDecl>(this) || isa<NamespaceDecl>(this))
439 return true;
440 // Otherwise, this is a strictly lexical check.
441 for (auto *DC = getLexicalDeclContext(); DC; DC = DC->getLexicalParent()) {
442 if (cast<Decl>(DC)->isModulePrivate())
443 return false;
444 if (isa<ExportDecl>(DC))
445 return true;
446 }
447 return false;
448 }
449
450 ExternalSourceSymbolAttr *Decl::getExternalSourceSymbolAttr() const {
451 const Decl *Definition = nullptr;
452 if (auto *ID = dyn_cast<ObjCInterfaceDecl>(this)) {
453 Definition = ID->getDefinition();
454 } else if (auto *PD = dyn_cast<ObjCProtocolDecl>(this)) {
455 Definition = PD->getDefinition();
456 } else if (auto *TD = dyn_cast<TagDecl>(this)) {
457 Definition = TD->getDefinition();
458 }
459 if (!Definition)
460 Definition = this;
461
462 if (auto *attr = Definition->getAttr<ExternalSourceSymbolAttr>())
463 return attr;
464 if (auto *dcd = dyn_cast<Decl>(getDeclContext())) {
465 return dcd->getAttr<ExternalSourceSymbolAttr>();
466 }
467
468 return nullptr;
469 }
470
471 bool Decl::hasDefiningAttr() const {
472 return hasAttr<AliasAttr>() || hasAttr<IFuncAttr>();
473 }
474
475 const Attr *Decl::getDefiningAttr() const {
476 if (auto *AA = getAttr<AliasAttr>())
477 return AA;
478 if (auto *IFA = getAttr<IFuncAttr>())
479 return IFA;
480 return nullptr;
481 }
482
483 static StringRef getRealizedPlatform(const AvailabilityAttr *A,
484 const ASTContext &Context) {
485 // Check if this is an App Extension "platform", and if so chop off
486 // the suffix for matching with the actual platform.
487 StringRef RealizedPlatform = A->getPlatform()->getName();
488 if (!Context.getLangOpts().AppExt)
489 return RealizedPlatform;
490 size_t suffix = RealizedPlatform.rfind("_app_extension");
491 if (suffix != StringRef::npos)
492 return RealizedPlatform.slice(0, suffix);
493 return RealizedPlatform;
494 }
495
496 /// Determine the availability of the given declaration based on
497 /// the target platform.
498 ///
499 /// When it returns an availability result other than \c AR_Available,
500 /// if the \p Message parameter is non-NULL, it will be set to a
501 /// string describing why the entity is unavailable.
502 ///
503 /// FIXME: Make these strings localizable, since they end up in
504 /// diagnostics.
505 static AvailabilityResult CheckAvailability(ASTContext &Context,
506 const AvailabilityAttr *A,
507 std::string *Message,
508 VersionTuple EnclosingVersion) {
509 if (EnclosingVersion.empty())
510 EnclosingVersion = Context.getTargetInfo().getPlatformMinVersion();
511
512 if (EnclosingVersion.empty())
513 return AR_Available;
514
515 StringRef ActualPlatform = A->getPlatform()->getName();
516 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
517
518 // Match the platform name.
519 if (getRealizedPlatform(A, Context) != TargetPlatform)
520 return AR_Available;
521
522 StringRef PrettyPlatformName
523 = AvailabilityAttr::getPrettyPlatformName(ActualPlatform);
524
525 if (PrettyPlatformName.empty())
526 PrettyPlatformName = ActualPlatform;
527
528 std::string HintMessage;
529 if (!A->getMessage().empty()) {
530 HintMessage = " - ";
531 HintMessage += A->getMessage();
532 }
533
534 // Make sure that this declaration has not been marked 'unavailable'.
535 if (A->getUnavailable()) {
536 if (Message) {
537 Message->clear();
538 llvm::raw_string_ostream Out(*Message);
539 Out << "not available on " << PrettyPlatformName
540 << HintMessage;
541 }
542
543 return AR_Unavailable;
544 }
545
546 // Make sure that this declaration has already been introduced.
547 if (!A->getIntroduced().empty() &&
548 EnclosingVersion < A->getIntroduced()) {
549 if (Message) {
550 Message->clear();
551 llvm::raw_string_ostream Out(*Message);
552 VersionTuple VTI(A->getIntroduced());
553 Out << "introduced in " << PrettyPlatformName << ' '
554 << VTI << HintMessage;
555 }
556
557 return A->getStrict() ? AR_Unavailable : AR_NotYetIntroduced;
558 }
559
560 // Make sure that this declaration hasn't been obsoleted.
561 if (!A->getObsoleted().empty() && EnclosingVersion >= A->getObsoleted()) {
562 if (Message) {
563 Message->clear();
564 llvm::raw_string_ostream Out(*Message);
565 VersionTuple VTO(A->getObsoleted());
566 Out << "obsoleted in " << PrettyPlatformName << ' '
567 << VTO << HintMessage;
568 }
569
570 return AR_Unavailable;
571 }
572
573 // Make sure that this declaration hasn't been deprecated.
574 if (!A->getDeprecated().empty() && EnclosingVersion >= A->getDeprecated()) {
575 if (Message) {
576 Message->clear();
577 llvm::raw_string_ostream Out(*Message);
578 VersionTuple VTD(A->getDeprecated());
579 Out << "first deprecated in " << PrettyPlatformName << ' '
580 << VTD << HintMessage;
581 }
582
583 return AR_Deprecated;
584 }
585
586 return AR_Available;
587 }
588
589 AvailabilityResult Decl::getAvailability(std::string *Message,
590 VersionTuple EnclosingVersion,
591 StringRef *RealizedPlatform) const {
592 if (auto *FTD = dyn_cast<FunctionTemplateDecl>(this))
593 return FTD->getTemplatedDecl()->getAvailability(Message, EnclosingVersion,
594 RealizedPlatform);
595
596 AvailabilityResult Result = AR_Available;
597 std::string ResultMessage;
598
599 for (const auto *A : attrs()) {
600 if (const auto *Deprecated = dyn_cast<DeprecatedAttr>(A)) {
601 if (Result >= AR_Deprecated)
602 continue;
603
604 if (Message)
605 ResultMessage = Deprecated->getMessage();
606
607 Result = AR_Deprecated;
608 continue;
609 }
610
611 if (const auto *Unavailable = dyn_cast<UnavailableAttr>(A)) {
612 if (Message)
613 *Message = Unavailable->getMessage();
614 return AR_Unavailable;
615 }
616
617 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
618 AvailabilityResult AR = CheckAvailability(getASTContext(), Availability,
619 Message, EnclosingVersion);
620
621 if (AR == AR_Unavailable) {
622 if (RealizedPlatform)
623 *RealizedPlatform = Availability->getPlatform()->getName();
624 return AR_Unavailable;
625 }
626
627 if (AR > Result) {
628 Result = AR;
629 if (Message)
630 ResultMessage.swap(*Message);
631 }
632 continue;
633 }
634 }
635
636 if (Message)
637 Message->swap(ResultMessage);
638 return Result;
639 }
640
641 VersionTuple Decl::getVersionIntroduced() const {
642 const ASTContext &Context = getASTContext();
643 StringRef TargetPlatform = Context.getTargetInfo().getPlatformName();
644 for (const auto *A : attrs()) {
645 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
646 if (getRealizedPlatform(Availability, Context) != TargetPlatform)
647 continue;
648 if (!Availability->getIntroduced().empty())
649 return Availability->getIntroduced();
650 }
651 }
652 return {};
653 }
654
655 bool Decl::canBeWeakImported(bool &IsDefinition) const {
656 IsDefinition = false;
657
658 // Variables, if they aren't definitions.
659 if (const auto *Var = dyn_cast<VarDecl>(this)) {
660 if (Var->isThisDeclarationADefinition()) {
661 IsDefinition = true;
662 return false;
663 }
664 return true;
665
666 // Functions, if they aren't definitions.
667 } else if (const auto *FD = dyn_cast<FunctionDecl>(this)) {
668 if (FD->hasBody()) {
669 IsDefinition = true;
670 return false;
671 }
672 return true;
673
674 // Objective-C classes, if this is the non-fragile runtime.
675 } else if (isa<ObjCInterfaceDecl>(this) &&
676 getASTContext().getLangOpts().ObjCRuntime.hasWeakClassImport()) {
677 return true;
678
679 // Nothing else.
680 } else {
681 return false;
682 }
683 }
684
685 bool Decl::isWeakImported() const {
686 bool IsDefinition;
687 if (!canBeWeakImported(IsDefinition))
688 return false;
689
690 for (const auto *A : attrs()) {
691 if (isa<WeakImportAttr>(A))
692 return true;
693
694 if (const auto *Availability = dyn_cast<AvailabilityAttr>(A)) {
695 if (CheckAvailability(getASTContext(), Availability, nullptr,
696 VersionTuple()) == AR_NotYetIntroduced)
697 return true;
698 }
699 }
700
701 return false;
702 }
703
704 unsigned Decl::getIdentifierNamespaceForKind(Kind DeclKind) {
705 switch (DeclKind) {
706 case Function:
707 case CXXDeductionGuide:
708 case CXXMethod:
709 case CXXConstructor:
710 case ConstructorUsingShadow:
711 case CXXDestructor:
712 case CXXConversion:
713 case EnumConstant:
714 case Var:
715 case ImplicitParam:
716 case ParmVar:
717 case ObjCMethod:
718 case ObjCProperty:
719 case MSProperty:
720 return IDNS_Ordinary;
721 case Label:
722 return IDNS_Label;
723 case IndirectField:
724 return IDNS_Ordinary | IDNS_Member;
725
726 case Binding:
727 case NonTypeTemplateParm:
728 case VarTemplate:
729 // These (C++-only) declarations are found by redeclaration lookup for
730 // tag types, so we include them in the tag namespace.
731 return IDNS_Ordinary | IDNS_Tag;
732
733 case ObjCCompatibleAlias:
734 case ObjCInterface:
735 return IDNS_Ordinary | IDNS_Type;
736
737 case Typedef:
738 case TypeAlias:
739 case TemplateTypeParm:
740 case ObjCTypeParam:
741 return IDNS_Ordinary | IDNS_Type;
742
743 case UnresolvedUsingTypename:
744 return IDNS_Ordinary | IDNS_Type | IDNS_Using;
745
746 case UsingShadow:
747 return 0; // we'll actually overwrite this later
748
749 case UnresolvedUsingValue:
750 return IDNS_Ordinary | IDNS_Using;
751
752 case Using:
753 case UsingPack:
754 return IDNS_Using;
755
756 case ObjCProtocol:
757 return IDNS_ObjCProtocol;
758
759 case Field:
760 case ObjCAtDefsField:
761 case ObjCIvar:
762 return IDNS_Member;
763
764 case Record:
765 case CXXRecord:
766 case Enum:
767 return IDNS_Tag | IDNS_Type;
768
769 case Namespace:
770 case NamespaceAlias:
771 return IDNS_Namespace;
772
773 case FunctionTemplate:
774 return IDNS_Ordinary;
775
776 case ClassTemplate:
777 case TemplateTemplateParm:
778 case TypeAliasTemplate:
779 return IDNS_Ordinary | IDNS_Tag | IDNS_Type;
780
781 case OMPDeclareReduction:
782 return IDNS_OMPReduction;
783
784 // Never have names.
785 case Friend:
786 case FriendTemplate:
787 case AccessSpec:
788 case LinkageSpec:
789 case Export:
790 case FileScopeAsm:
791 case StaticAssert:
792 case ObjCPropertyImpl:
793 case PragmaComment:
794 case PragmaDetectMismatch:
795 case Block:
796 case Captured:
797 case TranslationUnit:
798 case ExternCContext:
799 case Decomposition:
800
801 case UsingDirective:
802 case BuiltinTemplate:
803 case ClassTemplateSpecialization:
804 case ClassTemplatePartialSpecialization:
805 case ClassScopeFunctionSpecialization:
806 case VarTemplateSpecialization:
807 case VarTemplatePartialSpecialization:
808 case ObjCImplementation:
809 case ObjCCategory:
810 case ObjCCategoryImpl:
811 case Import:
812 case OMPThreadPrivate:
813 case OMPRequires:
814 case OMPCapturedExpr:
815 case Empty:
816 // Never looked up by name.
817 return 0;
818 }
819
820 llvm_unreachable("Invalid DeclKind!");
821 }
822
823 void Decl::setAttrsImpl(const AttrVec &attrs, ASTContext &Ctx) {
824 assert(!HasAttrs && "Decl already contains attrs.");
825
826 AttrVec &AttrBlank = Ctx.getDeclAttrs(this);
827 assert(AttrBlank.empty() && "HasAttrs was wrong?");
828
829 AttrBlank = attrs;
830 HasAttrs = true;
831 }
832
833 void Decl::dropAttrs() {
834 if (!HasAttrs) return;
835
836 HasAttrs = false;
837 getASTContext().eraseDeclAttrs(this);
838 }
839
840 void Decl::addAttr(Attr *A) {
841 if (!hasAttrs()) {
842 setAttrs(AttrVec(1, A));
843 return;
844 }
845
846 AttrVec &Attrs = getAttrs();
847 if (!A->isInherited()) {
848 Attrs.push_back(A);
849 return;
850 }
851
852 // Attribute inheritance is processed after attribute parsing. To keep the
853 // order as in the source code, add inherited attributes before non-inherited
854 // ones.
855 auto I = Attrs.begin(), E = Attrs.end();
856 for (; I != E; ++I) {
857 if (!(*I)->isInherited())
858 break;
859 }
860 Attrs.insert(I, A);
861 }
862
863 const AttrVec &Decl::getAttrs() const {
864 assert(HasAttrs && "No attrs to get!");
865 return getASTContext().getDeclAttrs(this);
866 }
867
868 Decl *Decl::castFromDeclContext (const DeclContext *D) {
869 Decl::Kind DK = D->getDeclKind();
870 switch(DK) {
871 #define DECL(NAME, BASE)
872 #define DECL_CONTEXT(NAME) \
873 case Decl::NAME: \
874 return static_cast<NAME##Decl *>(const_cast<DeclContext *>(D));
875 #define DECL_CONTEXT_BASE(NAME)
876 #include "clang/AST/DeclNodes.inc"
877 default:
878 #define DECL(NAME, BASE)
879 #define DECL_CONTEXT_BASE(NAME) \
880 if (DK >= first##NAME && DK <= last##NAME) \
881 return static_cast<NAME##Decl *>(const_cast<DeclContext *>(D));
882 #include "clang/AST/DeclNodes.inc"
883 llvm_unreachable("a decl that inherits DeclContext isn't handled");
884 }
885 }
886
887 DeclContext *Decl::castToDeclContext(const Decl *D) {
888 Decl::Kind DK = D->getKind();
889 switch(DK) {
890 #define DECL(NAME, BASE)
891 #define DECL_CONTEXT(NAME) \
892 case Decl::NAME: \
893 return static_cast<NAME##Decl *>(const_cast<Decl *>(D));
894 #define DECL_CONTEXT_BASE(NAME)
895 #include "clang/AST/DeclNodes.inc"
896 default:
897 #define DECL(NAME, BASE)
898 #define DECL_CONTEXT_BASE(NAME) \
899 if (DK >= first##NAME && DK <= last##NAME) \
900 return static_cast<NAME##Decl *>(const_cast<Decl *>(D));
901 #include "clang/AST/DeclNodes.inc"
902 llvm_unreachable("a decl that inherits DeclContext isn't handled");
903 }
904 }
905
906 SourceLocation Decl::getBodyRBrace() const {
907 // Special handling of FunctionDecl to avoid de-serializing the body from PCH.
908 // FunctionDecl stores EndRangeLoc for this purpose.
909 if (const auto *FD = dyn_cast<FunctionDecl>(this)) {
910 const FunctionDecl *Definition;
911 if (FD->hasBody(Definition))
912 return Definition->getSourceRange().getEnd();
913 return {};
914 }
915
916 if (Stmt *Body = getBody())
917 return Body->getSourceRange().getEnd();
918
919 return {};
920 }
921
922 bool Decl::AccessDeclContextSanity() const {
923 #ifndef NDEBUG
924 // Suppress this check if any of the following hold:
925 // 1. this is the translation unit (and thus has no parent)
926 // 2. this is a template parameter (and thus doesn't belong to its context)
927 // 3. this is a non-type template parameter
928 // 4. the context is not a record
929 // 5. it's invalid
930 // 6. it's a C++0x static_assert.
931 // 7. it's a block literal declaration
932 if (isa<TranslationUnitDecl>(this) ||
933 isa<TemplateTypeParmDecl>(this) ||
934 isa<NonTypeTemplateParmDecl>(this) ||
935 !isa<CXXRecordDecl>(getDeclContext()) ||
936 isInvalidDecl() ||
937 isa<StaticAssertDecl>(this) ||
938 isa<BlockDecl>(this) ||
939 // FIXME: a ParmVarDecl can have ClassTemplateSpecialization
940 // as DeclContext (?).
941 isa<ParmVarDecl>(this) ||
942 // FIXME: a ClassTemplateSpecialization or CXXRecordDecl can have
943 // AS_none as access specifier.
944 isa<CXXRecordDecl>(this) ||
945 isa<ClassScopeFunctionSpecializationDecl>(this))
946 return true;
947
948 assert(Access != AS_none &&
949 "Access specifier is AS_none inside a record decl");
950 #endif
951 return true;
952 }
953
954 static Decl::Kind getKind(const Decl *D) { return D->getKind(); }
955 static Decl::Kind getKind(const DeclContext *DC) { return DC->getDeclKind(); }
956
957 int64_t Decl::getID() const {
958 return getASTContext().getAllocator().identifyKnownAlignedObject<Decl>(this);
959 }
960
961 const FunctionType *Decl::getFunctionType(bool BlocksToo) const {
962 QualType Ty;
963 if (const auto *D = dyn_cast<ValueDecl>(this))
964 Ty = D->getType();
965 else if (const auto *D = dyn_cast<TypedefNameDecl>(this))
966 Ty = D->getUnderlyingType();
967 else
968 return nullptr;
969
970 if (Ty->isFunctionPointerType())
971 Ty = Ty->getAs<PointerType>()->getPointeeType();
972 else if (BlocksToo && Ty->isBlockPointerType())
973 Ty = Ty->getAs<BlockPointerType>()->getPointeeType();
974
975 return Ty->getAs<FunctionType>();
976 }
977
978 /// Starting at a given context (a Decl or DeclContext), look for a
979 /// code context that is not a closure (a lambda, block, etc.).
980 template <class T> static Decl *getNonClosureContext(T *D) {
981 if (getKind(D) == Decl::CXXMethod) {
982 auto *MD = cast<CXXMethodDecl>(D);
983 if (MD->getOverloadedOperator() == OO_Call &&
984 MD->getParent()->isLambda())
985 return getNonClosureContext(MD->getParent()->getParent());
986 return MD;
987 } else if (auto *FD = dyn_cast<FunctionDecl>(D))
988 return FD;
989 else if (auto *MD = dyn_cast<ObjCMethodDecl>(D))
990 return MD;
991 else if (auto *BD = dyn_cast<BlockDecl>(D))
992 return getNonClosureContext(BD->getParent());
993 else if (auto *CD = dyn_cast<CapturedDecl>(D))
994 return getNonClosureContext(CD->getParent());
995 else
996 return nullptr;
997 }
998
999 Decl *Decl::getNonClosureContext() {
1000 return ::getNonClosureContext(this);
1001 }
1002
1003 Decl *DeclContext::getNonClosureAncestor() {
1004 return ::getNonClosureContext(this);
1005 }
1006
1007 //===----------------------------------------------------------------------===//
1008 // DeclContext Implementation
1009 //===----------------------------------------------------------------------===//
1010
1011 DeclContext::DeclContext(Decl::Kind K) {
1012 DeclContextBits.DeclKind = K;
1013 setHasExternalLexicalStorage(false);
1014 setHasExternalVisibleStorage(false);
1015 setNeedToReconcileExternalVisibleStorage(false);
1016 setHasLazyLocalLexicalLookups(false);
1017 setHasLazyExternalLexicalLookups(false);
1018 setUseQualifiedLookup(false);
1019 }
1020
1021 bool DeclContext::classof(const Decl *D) {
1022 switch (D->getKind()) {
1023 #define DECL(NAME, BASE)
1024 #define DECL_CONTEXT(NAME) case Decl::NAME:
1025 #define DECL_CONTEXT_BASE(NAME)
1026 #include "clang/AST/DeclNodes.inc"
1027 return true;
1028 default:
1029 #define DECL(NAME, BASE)
1030 #define DECL_CONTEXT_BASE(NAME) \
1031 if (D->getKind() >= Decl::first##NAME && \
1032 D->getKind() <= Decl::last##NAME) \
1033 return true;
1034 #include "clang/AST/DeclNodes.inc"
1035 return false;
1036 }
1037 }
1038
1039 DeclContext::~DeclContext() = default;
1040
1041 /// Find the parent context of this context that will be
1042 /// used for unqualified name lookup.
1043 ///
1044 /// Generally, the parent lookup context is the semantic context. However, for
1045 /// a friend function the parent lookup context is the lexical context, which
1046 /// is the class in which the friend is declared.
1047 DeclContext *DeclContext::getLookupParent() {
1048 // FIXME: Find a better way to identify friends.
1049 if (isa<FunctionDecl>(this))
1050 if (getParent()->getRedeclContext()->isFileContext() &&
1051 getLexicalParent()->getRedeclContext()->isRecord())
1052 return getLexicalParent();
1053
1054 return getParent();
1055 }
1056
1057 bool DeclContext::isInlineNamespace() const {
1058 return isNamespace() &&
1059 cast<NamespaceDecl>(this)->isInline();
1060 }
1061
1062 bool DeclContext::isStdNamespace() const {
1063 if (!isNamespace())
1064 return false;
1065
1066 const auto *ND = cast<NamespaceDecl>(this);
1067 if (ND->isInline()) {
1068 return ND->getParent()->isStdNamespace();
1069 }
1070
1071 if (!getParent()->getRedeclContext()->isTranslationUnit())
1072 return false;
1073
1074 const IdentifierInfo *II = ND->getIdentifier();
1075 return II && II->isStr("std");
1076 }
1077
1078 bool DeclContext::isDependentContext() const {
1079 if (isFileContext())
1080 return false;
1081
1082 if (isa<ClassTemplatePartialSpecializationDecl>(this))
1083 return true;
1084
1085 if (const auto *Record = dyn_cast<CXXRecordDecl>(this)) {
1086 if (Record->getDescribedClassTemplate())
1087 return true;
1088
1089 if (Record->isDependentLambda())
1090 return true;
1091 }
1092
1093 if (const auto *Function = dyn_cast<FunctionDecl>(this)) {
1094 if (Function->getDescribedFunctionTemplate())
1095 return true;
1096
1097 // Friend function declarations are dependent if their *lexical*
1098 // context is dependent.
1099 if (cast<Decl>(this)->getFriendObjectKind())
1100 return getLexicalParent()->isDependentContext();
1101 }
1102
1103 // FIXME: A variable template is a dependent context, but is not a
1104 // DeclContext. A context within it (such as a lambda-expression)
1105 // should be considered dependent.
1106
1107 return getParent() && getParent()->isDependentContext();
1108 }
1109
1110 bool DeclContext::isTransparentContext() const {
1111 if (getDeclKind() == Decl::Enum)
1112 return !cast<EnumDecl>(this)->isScoped();
1113 else if (getDeclKind() == Decl::LinkageSpec || getDeclKind() == Decl::Export)
1114 return true;
1115
1116 return false;
1117 }
1118
1119 static bool isLinkageSpecContext(const DeclContext *DC,
1120 LinkageSpecDecl::LanguageIDs ID) {
1121 while (DC->getDeclKind() != Decl::TranslationUnit) {
1122 if (DC->getDeclKind() == Decl::LinkageSpec)
1123 return cast<LinkageSpecDecl>(DC)->getLanguage() == ID;
1124 DC = DC->getLexicalParent();
1125 }
1126 return false;
1127 }
1128
1129 bool DeclContext::isExternCContext() const {
1130 return isLinkageSpecContext(this, LinkageSpecDecl::lang_c);
1131 }
1132
1133 const LinkageSpecDecl *DeclContext::getExternCContext() const {
1134 const DeclContext *DC = this;
1135 while (DC->getDeclKind() != Decl::TranslationUnit) {
1136 if (DC->getDeclKind() == Decl::LinkageSpec &&
1137 cast<LinkageSpecDecl>(DC)->getLanguage() == LinkageSpecDecl::lang_c)
1138 return cast<LinkageSpecDecl>(DC);
1139 DC = DC->getLexicalParent();
1140 }
1141 return nullptr;
1142 }
1143
1144 bool DeclContext::isExternCXXContext() const {
1145 return isLinkageSpecContext(this, LinkageSpecDecl::lang_cxx);
1146 }
1147
1148 bool DeclContext::Encloses(const DeclContext *DC) const {
1149 if (getPrimaryContext() != this)
1150 return getPrimaryContext()->Encloses(DC);
1151
1152 for (; DC; DC = DC->getParent())
1153 if (DC->getPrimaryContext() == this)
1154 return true;
1155 return false;
1156 }
1157
1158 DeclContext *DeclContext::getPrimaryContext() {
1159 switch (getDeclKind()) {
1160 case Decl::TranslationUnit:
1161 case Decl::ExternCContext:
1162 case Decl::LinkageSpec:
1163 case Decl::Export:
1164 case Decl::Block:
1165 case Decl::Captured:
1166 case Decl::OMPDeclareReduction:
1167 // There is only one DeclContext for these entities.
1168 return this;
1169
1170 case Decl::Namespace:
1171 // The original namespace is our primary context.
1172 return static_cast<NamespaceDecl *>(this)->getOriginalNamespace();
1173
1174 case Decl::ObjCMethod:
1175 return this;
1176
1177 case Decl::ObjCInterface:
1178 if (auto *Def = cast<ObjCInterfaceDecl>(this)->getDefinition())
1179 return Def;
1180 return this;
1181
1182 case Decl::ObjCProtocol:
1183 if (auto *Def = cast<ObjCProtocolDecl>(this)->getDefinition())
1184 return Def;
1185 return this;
1186
1187 case Decl::ObjCCategory:
1188 return this;
1189
1190 case Decl::ObjCImplementation:
1191 case Decl::ObjCCategoryImpl:
1192 return this;
1193
1194 default:
1195 if (getDeclKind() >= Decl::firstTag && getDeclKind() <= Decl::lastTag) {
1196 // If this is a tag type that has a definition or is currently
1197 // being defined, that definition is our primary context.
1198 auto *Tag = cast<TagDecl>(this);
1199
1200 if (TagDecl *Def = Tag->getDefinition())
1201 return Def;
1202
1203 if (const auto *TagTy = dyn_cast<TagType>(Tag->getTypeForDecl())) {
1204 // Note, TagType::getDecl returns the (partial) definition one exists.
1205 TagDecl *PossiblePartialDef = TagTy->getDecl();
1206 if (PossiblePartialDef->isBeingDefined())
1207 return PossiblePartialDef;
1208 } else {
1209 assert(isa<InjectedClassNameType>(Tag->getTypeForDecl()));
1210 }
1211
1212 return Tag;
1213 }
1214
1215 assert(getDeclKind() >= Decl::firstFunction &&
1216 getDeclKind() <= Decl::lastFunction &&
1217 "Unknown DeclContext kind");
1218 return this;
1219 }
1220 }
1221
1222 void
1223 DeclContext::collectAllContexts(SmallVectorImpl<DeclContext *> &Contexts){
1224 Contexts.clear();
1225
1226 if (getDeclKind() != Decl::Namespace) {
1227 Contexts.push_back(this);
1228 return;
1229 }
1230
1231 auto *Self = static_cast<NamespaceDecl *>(this);
1232 for (NamespaceDecl *N = Self->getMostRecentDecl(); N;
1233 N = N->getPreviousDecl())
1234 Contexts.push_back(N);
1235
1236 std::reverse(Contexts.begin(), Contexts.end());
1237 }
1238
1239 std::pair<Decl *, Decl *>
1240 DeclContext::BuildDeclChain(ArrayRef<Decl *> Decls,
1241 bool FieldsAlreadyLoaded) {
1242 // Build up a chain of declarations via the Decl::NextInContextAndBits field.
1243 Decl *FirstNewDecl = nullptr;
1244 Decl *PrevDecl = nullptr;
1245 for (auto *D : Decls) {
1246 if (FieldsAlreadyLoaded && isa<FieldDecl>(D))
1247 continue;
1248
1249 if (PrevDecl)
1250 PrevDecl->NextInContextAndBits.setPointer(D);
1251 else
1252 FirstNewDecl = D;
1253
1254 PrevDecl = D;
1255 }
1256
1257 return std::make_pair(FirstNewDecl, PrevDecl);
1258 }
1259
1260 /// We have just acquired external visible storage, and we already have
1261 /// built a lookup map. For every name in the map, pull in the new names from
1262 /// the external storage.
1263 void DeclContext::reconcileExternalVisibleStorage() const {
1264 assert(hasNeedToReconcileExternalVisibleStorage() && LookupPtr);
1265 setNeedToReconcileExternalVisibleStorage(false);
1266
1267 for (auto &Lookup : *LookupPtr)
1268 Lookup.second.setHasExternalDecls();
1269 }
1270
1271 /// Load the declarations within this lexical storage from an
1272 /// external source.
1273 /// \return \c true if any declarations were added.
1274 bool
1275 DeclContext::LoadLexicalDeclsFromExternalStorage() const {
1276 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1277 assert(hasExternalLexicalStorage() && Source && "No external storage?");
1278
1279 // Notify that we have a DeclContext that is initializing.
1280 ExternalASTSource::Deserializing ADeclContext(Source);
1281
1282 // Load the external declarations, if any.
1283 SmallVector<Decl*, 64> Decls;
1284 setHasExternalLexicalStorage(false);
1285 Source->FindExternalLexicalDecls(this, Decls);
1286
1287 if (Decls.empty())
1288 return false;
1289
1290 // We may have already loaded just the fields of this record, in which case
1291 // we need to ignore them.
1292 bool FieldsAlreadyLoaded = false;
1293 if (const auto *RD = dyn_cast<RecordDecl>(this))
1294 FieldsAlreadyLoaded = RD->hasLoadedFieldsFromExternalStorage();
1295
1296 // Splice the newly-read declarations into the beginning of the list
1297 // of declarations.
1298 Decl *ExternalFirst, *ExternalLast;
1299 std::tie(ExternalFirst, ExternalLast) =
1300 BuildDeclChain(Decls, FieldsAlreadyLoaded);
1301 ExternalLast->NextInContextAndBits.setPointer(FirstDecl);
1302 FirstDecl = ExternalFirst;
1303 if (!LastDecl)
1304 LastDecl = ExternalLast;
1305 return true;
1306 }
1307
1308 DeclContext::lookup_result
1309 ExternalASTSource::SetNoExternalVisibleDeclsForName(const DeclContext *DC,
1310 DeclarationName Name) {
1311 ASTContext &Context = DC->getParentASTContext();
1312 StoredDeclsMap *Map;
1313 if (!(Map = DC->LookupPtr))
1314 Map = DC->CreateStoredDeclsMap(Context);
1315 if (DC->hasNeedToReconcileExternalVisibleStorage())
1316 DC->reconcileExternalVisibleStorage();
1317
1318 (*Map)[Name].removeExternalDecls();
1319
1320 return DeclContext::lookup_result();
1321 }
1322
1323 DeclContext::lookup_result
1324 ExternalASTSource::SetExternalVisibleDeclsForName(const DeclContext *DC,
1325 DeclarationName Name,
1326 ArrayRef<NamedDecl*> Decls) {
1327 ASTContext &Context = DC->getParentASTContext();
1328 StoredDeclsMap *Map;
1329 if (!(Map = DC->LookupPtr))
1330 Map = DC->CreateStoredDeclsMap(Context);
1331 if (DC->hasNeedToReconcileExternalVisibleStorage())
1332 DC->reconcileExternalVisibleStorage();
1333
1334 StoredDeclsList &List = (*Map)[Name];
1335
1336 // Clear out any old external visible declarations, to avoid quadratic
1337 // performance in the redeclaration checks below.
1338 List.removeExternalDecls();
1339
1340 if (!List.isNull()) {
1341 // We have both existing declarations and new declarations for this name.
1342 // Some of the declarations may simply replace existing ones. Handle those
1343 // first.
1344 llvm::SmallVector<unsigned, 8> Skip;
1345 for (unsigned I = 0, N = Decls.size(); I != N; ++I)
1346 if (List.HandleRedeclaration(Decls[I], /*IsKnownNewer*/false))
1347 Skip.push_back(I);
1348 Skip.push_back(Decls.size());
1349
1350 // Add in any new declarations.
1351 unsigned SkipPos = 0;
1352 for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
1353 if (I == Skip[SkipPos])
1354 ++SkipPos;
1355 else
1356 List.AddSubsequentDecl(Decls[I]);
1357 }
1358 } else {
1359 // Convert the array to a StoredDeclsList.
1360 for (auto *D : Decls) {
1361 if (List.isNull())
1362 List.setOnlyValue(D);
1363 else
1364 List.AddSubsequentDecl(D);
1365 }
1366 }
1367
1368 return List.getLookupResult();
1369 }
1370
1371 DeclContext::decl_iterator DeclContext::decls_begin() const {
1372 if (hasExternalLexicalStorage())
1373 LoadLexicalDeclsFromExternalStorage();
1374 return decl_iterator(FirstDecl);
1375 }
1376
1377 bool DeclContext::decls_empty() const {
1378 if (hasExternalLexicalStorage())
1379 LoadLexicalDeclsFromExternalStorage();
1380
1381 return !FirstDecl;
1382 }
1383
1384 bool DeclContext::containsDecl(Decl *D) const {
1385 return (D->getLexicalDeclContext() == this &&
1386 (D->NextInContextAndBits.getPointer() || D == LastDecl));
1387 }
1388
1389 bool DeclContext::containsDeclAndLoad(Decl *D) const {
1390 if (hasExternalLexicalStorage())
1391 LoadLexicalDeclsFromExternalStorage();
1392 return containsDecl(D);
1393 }
1394
1395 /// shouldBeHidden - Determine whether a declaration which was declared
1396 /// within its semantic context should be invisible to qualified name lookup.
1397 static bool shouldBeHidden(NamedDecl *D) {
1398 // Skip unnamed declarations.
1399 if (!D->getDeclName())
1400 return true;
1401
1402 // Skip entities that can't be found by name lookup into a particular
1403 // context.
1404 if ((D->getIdentifierNamespace() == 0 && !isa<UsingDirectiveDecl>(D)) ||
1405 D->isTemplateParameter())
1406 return true;
1407
1408 // Skip friends and local extern declarations unless they're the first
1409 // declaration of the entity.
1410 if ((D->isLocalExternDecl() || D->getFriendObjectKind()) &&
1411 D != D->getCanonicalDecl())
1412 return true;
1413
1414 // Skip template specializations.
1415 // FIXME: This feels like a hack. Should DeclarationName support
1416 // template-ids, or is there a better way to keep specializations
1417 // from being visible?
1418 if (isa<ClassTemplateSpecializationDecl>(D))
1419 return true;
1420 if (auto *FD = dyn_cast<FunctionDecl>(D))
1421 if (FD->isFunctionTemplateSpecialization())
1422 return true;
1423
1424 return false;
1425 }
1426
1427 void DeclContext::removeDecl(Decl *D) {
1428 assert(D->getLexicalDeclContext() == this &&
1429 "decl being removed from non-lexical context");
1430 assert((D->NextInContextAndBits.getPointer() || D == LastDecl) &&
1431 "decl is not in decls list");
1432
1433 // Remove D from the decl chain. This is O(n) but hopefully rare.
1434 if (D == FirstDecl) {
1435 if (D == LastDecl)
1436 FirstDecl = LastDecl = nullptr;
1437 else
1438 FirstDecl = D->NextInContextAndBits.getPointer();
1439 } else {
1440 for (Decl *I = FirstDecl; true; I = I->NextInContextAndBits.getPointer()) {
1441 assert(I && "decl not found in linked list");
1442 if (I->NextInContextAndBits.getPointer() == D) {
1443 I->NextInContextAndBits.setPointer(D->NextInContextAndBits.getPointer());
1444 if (D == LastDecl) LastDecl = I;
1445 break;
1446 }
1447 }
1448 }
1449
1450 // Mark that D is no longer in the decl chain.
1451 D->NextInContextAndBits.setPointer(nullptr);
1452
1453 // Remove D from the lookup table if necessary.
1454 if (isa<NamedDecl>(D)) {
1455 auto *ND = cast<NamedDecl>(D);
1456
1457 // Do not try to remove the declaration if that is invisible to qualified
1458 // lookup. E.g. template specializations are skipped.
1459 if (shouldBeHidden(ND))
1460 return;
1461
1462 // Remove only decls that have a name
1463 if (!ND->getDeclName())
1464 return;
1465
1466 auto *DC = D->getDeclContext();
1467 do {
1468 StoredDeclsMap *Map = DC->getPrimaryContext()->LookupPtr;
1469 if (Map) {
1470 StoredDeclsMap::iterator Pos = Map->find(ND->getDeclName());
1471 assert(Pos != Map->end() && "no lookup entry for decl");
1472 // Remove the decl only if it is contained.
1473 StoredDeclsList::DeclsTy *Vec = Pos->second.getAsVector();
1474 if ((Vec && is_contained(*Vec, ND)) || Pos->second.getAsDecl() == ND)
1475 Pos->second.remove(ND);
1476 }
1477 } while (DC->isTransparentContext() && (DC = DC->getParent()));
1478 }
1479 }
1480
1481 void DeclContext::addHiddenDecl(Decl *D) {
1482 assert(D->getLexicalDeclContext() == this &&
1483 "Decl inserted into wrong lexical context");
1484 assert(!D->getNextDeclInContext() && D != LastDecl &&
1485 "Decl already inserted into a DeclContext");
1486
1487 if (FirstDecl) {
1488 LastDecl->NextInContextAndBits.setPointer(D);
1489 LastDecl = D;
1490 } else {
1491 FirstDecl = LastDecl = D;
1492 }
1493
1494 // Notify a C++ record declaration that we've added a member, so it can
1495 // update its class-specific state.
1496 if (auto *Record = dyn_cast<CXXRecordDecl>(this))
1497 Record->addedMember(D);
1498
1499 // If this is a newly-created (not de-serialized) import declaration, wire
1500 // it in to the list of local import declarations.
1501 if (!D->isFromASTFile()) {
1502 if (auto *Import = dyn_cast<ImportDecl>(D))
1503 D->getASTContext().addedLocalImportDecl(Import);
1504 }
1505 }
1506
1507 void DeclContext::addDecl(Decl *D) {
1508 addHiddenDecl(D);
1509
1510 if (auto *ND = dyn_cast<NamedDecl>(D))
1511 ND->getDeclContext()->getPrimaryContext()->
1512 makeDeclVisibleInContextWithFlags(ND, false, true);
1513 }
1514
1515 void DeclContext::addDeclInternal(Decl *D) {
1516 addHiddenDecl(D);
1517
1518 if (auto *ND = dyn_cast<NamedDecl>(D))
1519 ND->getDeclContext()->getPrimaryContext()->
1520 makeDeclVisibleInContextWithFlags(ND, true, true);
1521 }
1522
1523 /// buildLookup - Build the lookup data structure with all of the
1524 /// declarations in this DeclContext (and any other contexts linked
1525 /// to it or transparent contexts nested within it) and return it.
1526 ///
1527 /// Note that the produced map may miss out declarations from an
1528 /// external source. If it does, those entries will be marked with
1529 /// the 'hasExternalDecls' flag.
1530 StoredDeclsMap *DeclContext::buildLookup() {
1531 assert(this == getPrimaryContext() && "buildLookup called on non-primary DC");
1532
1533 if (!hasLazyLocalLexicalLookups() &&
1534 !hasLazyExternalLexicalLookups())
1535 return LookupPtr;
1536
1537 SmallVector<DeclContext *, 2> Contexts;
1538 collectAllContexts(Contexts);
1539
1540 if (hasLazyExternalLexicalLookups()) {
1541 setHasLazyExternalLexicalLookups(false);
1542 for (auto *DC : Contexts) {
1543 if (DC->hasExternalLexicalStorage()) {
1544 bool LoadedDecls = DC->LoadLexicalDeclsFromExternalStorage();
1545 setHasLazyLocalLexicalLookups(
1546 hasLazyLocalLexicalLookups() | LoadedDecls );
1547 }
1548 }
1549
1550 if (!hasLazyLocalLexicalLookups())
1551 return LookupPtr;
1552 }
1553
1554 for (auto *DC : Contexts)
1555 buildLookupImpl(DC, hasExternalVisibleStorage());
1556
1557 // We no longer have any lazy decls.
1558 setHasLazyLocalLexicalLookups(false);
1559 return LookupPtr;
1560 }
1561
1562 /// buildLookupImpl - Build part of the lookup data structure for the
1563 /// declarations contained within DCtx, which will either be this
1564 /// DeclContext, a DeclContext linked to it, or a transparent context
1565 /// nested within it.
1566 void DeclContext::buildLookupImpl(DeclContext *DCtx, bool Internal) {
1567 for (auto *D : DCtx->noload_decls()) {
1568 // Insert this declaration into the lookup structure, but only if
1569 // it's semantically within its decl context. Any other decls which
1570 // should be found in this context are added eagerly.
1571 //
1572 // If it's from an AST file, don't add it now. It'll get handled by
1573 // FindExternalVisibleDeclsByName if needed. Exception: if we're not
1574 // in C++, we do not track external visible decls for the TU, so in
1575 // that case we need to collect them all here.
1576 if (auto *ND = dyn_cast<NamedDecl>(D))
1577 if (ND->getDeclContext() == DCtx && !shouldBeHidden(ND) &&
1578 (!ND->isFromASTFile() ||
1579 (isTranslationUnit() &&
1580 !getParentASTContext().getLangOpts().CPlusPlus)))
1581 makeDeclVisibleInContextImpl(ND, Internal);
1582
1583 // If this declaration is itself a transparent declaration context
1584 // or inline namespace, add the members of this declaration of that
1585 // context (recursively).
1586 if (auto *InnerCtx = dyn_cast<DeclContext>(D))
1587 if (InnerCtx->isTransparentContext() || InnerCtx->isInlineNamespace())
1588 buildLookupImpl(InnerCtx, Internal);
1589 }
1590 }
1591
1592 NamedDecl *const DeclContextLookupResult::SingleElementDummyList = nullptr;
1593
1594 DeclContext::lookup_result
1595 DeclContext::lookup(DeclarationName Name) const {
1596 assert(getDeclKind() != Decl::LinkageSpec &&
1597 getDeclKind() != Decl::Export &&
1598 "should not perform lookups into transparent contexts");
1599
1600 const DeclContext *PrimaryContext = getPrimaryContext();
1601 if (PrimaryContext != this)
1602 return PrimaryContext->lookup(Name);
1603
1604 // If we have an external source, ensure that any later redeclarations of this
1605 // context have been loaded, since they may add names to the result of this
1606 // lookup (or add external visible storage).
1607 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1608 if (Source)
1609 (void)cast<Decl>(this)->getMostRecentDecl();
1610
1611 if (hasExternalVisibleStorage()) {
1612 assert(Source && "external visible storage but no external source?");
1613
1614 if (hasNeedToReconcileExternalVisibleStorage())
1615 reconcileExternalVisibleStorage();
1616
1617 StoredDeclsMap *Map = LookupPtr;
1618
1619 if (hasLazyLocalLexicalLookups() ||
1620 hasLazyExternalLexicalLookups())
1621 // FIXME: Make buildLookup const?
1622 Map = const_cast<DeclContext*>(this)->buildLookup();
1623
1624 if (!Map)
1625 Map = CreateStoredDeclsMap(getParentASTContext());
1626
1627 // If we have a lookup result with no external decls, we are done.
1628 std::pair<StoredDeclsMap::iterator, bool> R =
1629 Map->insert(std::make_pair(Name, StoredDeclsList()));
1630 if (!R.second && !R.first->second.hasExternalDecls())
1631 return R.first->second.getLookupResult();
1632
1633 if (Source->FindExternalVisibleDeclsByName(this, Name) || !R.second) {
1634 if (StoredDeclsMap *Map = LookupPtr) {
1635 StoredDeclsMap::iterator I = Map->find(Name);
1636 if (I != Map->end())
1637 return I->second.getLookupResult();
1638 }
1639 }
1640
1641 return {};
1642 }
1643
1644 StoredDeclsMap *Map = LookupPtr;
1645 if (hasLazyLocalLexicalLookups() ||
1646 hasLazyExternalLexicalLookups())
1647 Map = const_cast<DeclContext*>(this)->buildLookup();
1648
1649 if (!Map)
1650 return {};
1651
1652 StoredDeclsMap::iterator I = Map->find(Name);
1653 if (I == Map->end())
1654 return {};
1655
1656 return I->second.getLookupResult();
1657 }
1658
1659 DeclContext::lookup_result
1660 DeclContext::noload_lookup(DeclarationName Name) {
1661 assert(getDeclKind() != Decl::LinkageSpec &&
1662 getDeclKind() != Decl::Export &&
1663 "should not perform lookups into transparent contexts");
1664
1665 DeclContext *PrimaryContext = getPrimaryContext();
1666 if (PrimaryContext != this)
1667 return PrimaryContext->noload_lookup(Name);
1668
1669 loadLazyLocalLexicalLookups();
1670 StoredDeclsMap *Map = LookupPtr;
1671 if (!Map)
1672 return {};
1673
1674 StoredDeclsMap::iterator I = Map->find(Name);
1675 return I != Map->end() ? I->second.getLookupResult()
1676 : lookup_result();
1677 }
1678
1679 // If we have any lazy lexical declarations not in our lookup map, add them
1680 // now. Don't import any external declarations, not even if we know we have
1681 // some missing from the external visible lookups.
1682 void DeclContext::loadLazyLocalLexicalLookups() {
1683 if (hasLazyLocalLexicalLookups()) {
1684 SmallVector<DeclContext *, 2> Contexts;
1685 collectAllContexts(Contexts);
1686 for (auto *Context : Contexts)
1687 buildLookupImpl(Context, hasExternalVisibleStorage());
1688 setHasLazyLocalLexicalLookups(false);
1689 }
1690 }
1691
1692 void DeclContext::localUncachedLookup(DeclarationName Name,
1693 SmallVectorImpl<NamedDecl *> &Results) {
1694 Results.clear();
1695
1696 // If there's no external storage, just perform a normal lookup and copy
1697 // the results.
1698 if (!hasExternalVisibleStorage() && !hasExternalLexicalStorage() && Name) {
1699 lookup_result LookupResults = lookup(Name);
1700 Results.insert(Results.end(), LookupResults.begin(), LookupResults.end());
1701 return;
1702 }
1703
1704 // If we have a lookup table, check there first. Maybe we'll get lucky.
1705 // FIXME: Should we be checking these flags on the primary context?
1706 if (Name && !hasLazyLocalLexicalLookups() &&
1707 !hasLazyExternalLexicalLookups()) {
1708 if (StoredDeclsMap *Map = LookupPtr) {
1709 StoredDeclsMap::iterator Pos = Map->find(Name);
1710 if (Pos != Map->end()) {
1711 Results.insert(Results.end(),
1712 Pos->second.getLookupResult().begin(),
1713 Pos->second.getLookupResult().end());
1714 return;
1715 }
1716 }
1717 }
1718
1719 // Slow case: grovel through the declarations in our chain looking for
1720 // matches.
1721 // FIXME: If we have lazy external declarations, this will not find them!
1722 // FIXME: Should we CollectAllContexts and walk them all here?
1723 for (Decl *D = FirstDecl; D; D = D->getNextDeclInContext()) {
1724 if (auto *ND = dyn_cast<NamedDecl>(D))
1725 if (ND->getDeclName() == Name)
1726 Results.push_back(ND);
1727 }
1728 }
1729
1730 DeclContext *DeclContext::getRedeclContext() {
1731 DeclContext *Ctx = this;
1732
1733 // In C, a record type is the redeclaration context for its fields only. If
1734 // we arrive at a record context after skipping anything else, we should skip
1735 // the record as well. Currently, this means skipping enumerations because
1736 // they're the only transparent context that can exist within a struct or
1737 // union.
1738 bool SkipRecords = getDeclKind() == Decl::Kind::Enum &&
1739 !getParentASTContext().getLangOpts().CPlusPlus;
1740
1741 // Skip through contexts to get to the redeclaration context. Transparent
1742 // contexts are always skipped.
1743 while ((SkipRecords && Ctx->isRecord()) || Ctx->isTransparentContext())
1744 Ctx = Ctx->getParent();
1745 return Ctx;
1746 }
1747
1748 DeclContext *DeclContext::getEnclosingNamespaceContext() {
1749 DeclContext *Ctx = this;
1750 // Skip through non-namespace, non-translation-unit contexts.
1751 while (!Ctx->isFileContext())
1752 Ctx = Ctx->getParent();
1753 return Ctx->getPrimaryContext();
1754 }
1755
1756 RecordDecl *DeclContext::getOuterLexicalRecordContext() {
1757 // Loop until we find a non-record context.
1758 RecordDecl *OutermostRD = nullptr;
1759 DeclContext *DC = this;
1760 while (DC->isRecord()) {
1761 OutermostRD = cast<RecordDecl>(DC);
1762 DC = DC->getLexicalParent();
1763 }
1764 return OutermostRD;
1765 }
1766
1767 bool DeclContext::InEnclosingNamespaceSetOf(const DeclContext *O) const {
1768 // For non-file contexts, this is equivalent to Equals.
1769 if (!isFileContext())
1770 return O->Equals(this);
1771
1772 do {
1773 if (O->Equals(this))
1774 return true;
1775
1776 const auto *NS = dyn_cast<NamespaceDecl>(O);
1777 if (!NS || !NS->isInline())
1778 break;
1779 O = NS->getParent();
1780 } while (O);
1781
1782 return false;
1783 }
1784
1785 void DeclContext::makeDeclVisibleInContext(NamedDecl *D) {
1786 DeclContext *PrimaryDC = this->getPrimaryContext();
1787 DeclContext *DeclDC = D->getDeclContext()->getPrimaryContext();
1788 // If the decl is being added outside of its semantic decl context, we
1789 // need to ensure that we eagerly build the lookup information for it.
1790 PrimaryDC->makeDeclVisibleInContextWithFlags(D, false, PrimaryDC == DeclDC);
1791 }
1792
1793 void DeclContext::makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
1794 bool Recoverable) {
1795 assert(this == getPrimaryContext() && "expected a primary DC");
1796
1797 if (!isLookupContext()) {
1798 if (isTransparentContext())
1799 getParent()->getPrimaryContext()
1800 ->makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
1801 return;
1802 }
1803
1804 // Skip declarations which should be invisible to name lookup.
1805 if (shouldBeHidden(D))
1806 return;
1807
1808 // If we already have a lookup data structure, perform the insertion into
1809 // it. If we might have externally-stored decls with this name, look them
1810 // up and perform the insertion. If this decl was declared outside its
1811 // semantic context, buildLookup won't add it, so add it now.
1812 //
1813 // FIXME: As a performance hack, don't add such decls into the translation
1814 // unit unless we're in C++, since qualified lookup into the TU is never
1815 // performed.
1816 if (LookupPtr || hasExternalVisibleStorage() ||
1817 ((!Recoverable || D->getDeclContext() != D->getLexicalDeclContext()) &&
1818 (getParentASTContext().getLangOpts().CPlusPlus ||
1819 !isTranslationUnit()))) {
1820 // If we have lazily omitted any decls, they might have the same name as
1821 // the decl which we are adding, so build a full lookup table before adding
1822 // this decl.
1823 buildLookup();
1824 makeDeclVisibleInContextImpl(D, Internal);
1825 } else {
1826 setHasLazyLocalLexicalLookups(true);
1827 }
1828
1829 // If we are a transparent context or inline namespace, insert into our
1830 // parent context, too. This operation is recursive.
1831 if (isTransparentContext() || isInlineNamespace())
1832 getParent()->getPrimaryContext()->
1833 makeDeclVisibleInContextWithFlags(D, Internal, Recoverable);
1834
1835 auto *DCAsDecl = cast<Decl>(this);
1836 // Notify that a decl was made visible unless we are a Tag being defined.
1837 if (!(isa<TagDecl>(DCAsDecl) && cast<TagDecl>(DCAsDecl)->isBeingDefined()))
1838 if (ASTMutationListener *L = DCAsDecl->getASTMutationListener())
1839 L->AddedVisibleDecl(this, D);
1840 }
1841
1842 void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
1843 // Find or create the stored declaration map.
1844 StoredDeclsMap *Map = LookupPtr;
1845 if (!Map) {
1846 ASTContext *C = &getParentASTContext();
1847 Map = CreateStoredDeclsMap(*C);
1848 }
1849
1850 // If there is an external AST source, load any declarations it knows about
1851 // with this declaration's name.
1852 // If the lookup table contains an entry about this name it means that we
1853 // have already checked the external source.
1854 if (!Internal)
1855 if (ExternalASTSource *Source = getParentASTContext().getExternalSource())
1856 if (hasExternalVisibleStorage() &&
1857 Map->find(D->getDeclName()) == Map->end())
1858 Source->FindExternalVisibleDeclsByName(this, D->getDeclName());
1859
1860 // Insert this declaration into the map.
1861 StoredDeclsList &DeclNameEntries = (*Map)[D->getDeclName()];
1862
1863 if (Internal) {
1864 // If this is being added as part of loading an external declaration,
1865 // this may not be the only external declaration with this name.
1866 // In this case, we never try to replace an existing declaration; we'll
1867 // handle that when we finalize the list of declarations for this name.
1868 DeclNameEntries.setHasExternalDecls();
1869 DeclNameEntries.AddSubsequentDecl(D);
1870 return;
1871 }
1872
1873 if (DeclNameEntries.isNull()) {
1874 DeclNameEntries.setOnlyValue(D);
1875 return;
1876 }
1877
1878 if (DeclNameEntries.HandleRedeclaration(D, /*IsKnownNewer*/!Internal)) {
1879 // This declaration has replaced an existing one for which
1880 // declarationReplaces returns true.
1881 return;
1882 }
1883
1884 // Put this declaration into the appropriate slot.
1885 DeclNameEntries.AddSubsequentDecl(D);
1886 }
1887
1888 UsingDirectiveDecl *DeclContext::udir_iterator::operator*() const {
1889 return cast<UsingDirectiveDecl>(*I);
1890 }
1891
1892 /// Returns iterator range [First, Last) of UsingDirectiveDecls stored within
1893 /// this context.
1894 DeclContext::udir_range DeclContext::using_directives() const {
1895 // FIXME: Use something more efficient than normal lookup for using
1896 // directives. In C++, using directives are looked up more than anything else.
1897 lookup_result Result = lookup(UsingDirectiveDecl::getName());
1898 return udir_range(Result.begin(), Result.end());
1899 }
1900
1901 //===----------------------------------------------------------------------===//
1902 // Creation and Destruction of StoredDeclsMaps. //
1903 //===----------------------------------------------------------------------===//
1904
1905 StoredDeclsMap *DeclContext::CreateStoredDeclsMap(ASTContext &C) const {
1906 assert(!LookupPtr && "context already has a decls map");
1907 assert(getPrimaryContext() == this &&
1908 "creating decls map on non-primary context");
1909
1910 StoredDeclsMap *M;
1911 bool Dependent = isDependentContext();
1912 if (Dependent)
1913 M = new DependentStoredDeclsMap();
1914 else
1915 M = new StoredDeclsMap();
1916 M->Previous = C.LastSDM;
1917 C.LastSDM = llvm::PointerIntPair<StoredDeclsMap*,1>(M, Dependent);
1918 LookupPtr = M;
1919 return M;
1920 }
1921
1922 void ASTContext::ReleaseDeclContextMaps() {
1923 // It's okay to delete DependentStoredDeclsMaps via a StoredDeclsMap
1924 // pointer because the subclass doesn't add anything that needs to
1925 // be deleted.
1926 StoredDeclsMap::DestroyAll(LastSDM.getPointer(), LastSDM.getInt());
1927 }
1928
1929 void StoredDeclsMap::DestroyAll(StoredDeclsMap *Map, bool Dependent) {
1930 while (Map) {
1931 // Advance the iteration before we invalidate memory.
1932 llvm::PointerIntPair<StoredDeclsMap*,1> Next = Map->Previous;
1933
1934 if (Dependent)
1935 delete static_cast<DependentStoredDeclsMap*>(Map);
1936 else
1937 delete Map;
1938
1939 Map = Next.getPointer();
1940 Dependent = Next.getInt();
1941 }
1942 }
1943
1944 DependentDiagnostic *DependentDiagnostic::Create(ASTContext &C,
1945 DeclContext *Parent,
1946 const PartialDiagnostic &PDiag) {
1947 assert(Parent->isDependentContext()
1948 && "cannot iterate dependent diagnostics of non-dependent context");
1949 Parent = Parent->getPrimaryContext();
1950 if (!Parent->LookupPtr)
1951 Parent->CreateStoredDeclsMap(C);
1952
1953 auto *Map = static_cast<DependentStoredDeclsMap *>(Parent->LookupPtr);
1954
1955 // Allocate the copy of the PartialDiagnostic via the ASTContext's
1956 // BumpPtrAllocator, rather than the ASTContext itself.
1957 PartialDiagnostic::Storage *DiagStorage = nullptr;
1958 if (PDiag.hasStorage())
1959 DiagStorage = new (C) PartialDiagnostic::Storage;
1960
1961 auto *DD = new (C) DependentDiagnostic(PDiag, DiagStorage);
1962
1963 // TODO: Maybe we shouldn't reverse the order during insertion.
1964 DD->NextDiagnostic = Map->FirstDiagnostic;
1965 Map->FirstDiagnostic = DD;
1966
1967 return DD;
1968 }
getRealizedPlatform
static StringRef getRealizedPlatform(const AvailabilityAttr *A, const ASTContext &Context)
Definition: DeclBase.cpp:483
clang::AR_Unavailable
Definition: DeclBase.h:77
clang::Builtin::ID
ID
Definition: Builtins.h:49
ASTContext.h
Defines the clang::ASTContext interface.
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1738
clang::StoredDeclsList::setHasExternalDecls
void setHasExternalDecls()
Definition: DeclContextInternals.h:87
clang::ASTContext::getDeclAttrs
AttrVec & getDeclAttrs(const Decl *D)
Retrieve the attributes for the given declaration.
Definition: ASTContext.cpp:1339
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:1692
clang::TargetInfo::getPlatformMinVersion
VersionTuple getPlatformMinVersion() const
Retrieve the minimum desired version of the platform, to which the program should be compiled...
Definition: TargetInfo.h:1215
clang::Decl::castToDeclContext
static DeclContext * castToDeclContext(const Decl *)
Definition: DeclBase.cpp:887
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Module * getOwningModule() const
Get the module that owns this declaration (for visibility purposes).
Definition: DeclBase.h:752
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PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:2537
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QualType getPointeeType() const
Definition: Type.h:2550
shouldBeHidden
static bool shouldBeHidden(NamedDecl *D)
shouldBeHidden - Determine whether a declaration which was declared within its semantic context shoul...
Definition: DeclBase.cpp:1397
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:638
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bool isBlockPointerType() const
Definition: Type.h:6304
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TagDecl * getDefinition() const
Returns the TagDecl that actually defines this struct/union/class/enum.
Definition: Decl.cpp:3900
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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:240
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:191
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:117
clang::ExternalASTSource::Deserializing
RAII class for safely pairing a StartedDeserializing call with FinishedDeserializing.
Definition: ExternalASTSource.h:80
size_t
__SIZE_TYPE__ size_t
The unsigned integer type of the result of the sizeof operator.
Definition: opencl-c.h:68
clang::Decl::castFromDeclContext
static Decl * castFromDeclContext(const DeclContext *)
Definition: DeclBase.cpp:868
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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:979
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void setAttrs(const AttrVec &Attrs)
Definition: DeclBase.h:475
isLinkageSpecContext
static bool isLinkageSpecContext(const DeclContext *DC, LinkageSpecDecl::LanguageIDs ID)
Definition: DeclBase.cpp:1119
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:66
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3355
Type.h
C Language Family Type Representation.
clang::AR_NotYetIntroduced
Definition: DeclBase.h:75
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const char * getDeclKindName() const
Definition: DeclBase.cpp:155
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Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:87
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specific_attr_iterator - Iterates over a subrange of an AttrVec, only providing attributes that are o...
Definition: AttrIterator.h:35
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Definition: PartialDiagnostic.h:35
clang::Decl::add
static void add(Kind k)
Definition: DeclBase.cpp:193
DeclTemplate.h
Defines the C++ template declaration subclasses.
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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:953
ObjCRuntime.h
Defines types useful for describing an Objective-C runtime.
clang::DeclContext::~DeclContext
~DeclContext()
clang::NamespaceDecl
Represent a C++ namespace.
Definition: Decl.h:515
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const TargetInfo & getTargetInfo() const
Definition: ASTContext.h:690
DeclObjC.h
clang::Decl::getIdentifierNamespace
unsigned getIdentifierNamespace() const
Definition: DeclBase.h:792
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:980
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:321
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:166
clang::Decl::hasOwningModule
bool hasOwningModule() const
Is this declaration owned by some module?
Definition: DeclBase.h:747
clang::Decl::getASTMutationListener
ASTMutationListener * getASTMutationListener() const
Definition: DeclBase.cpp:380
clang::Type::getAs
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6748
clang::Decl::hasLocalOwningModuleStorage
bool hasLocalOwningModuleStorage() const
Definition: DeclBase.cpp:119
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bool isExternCContext() const
Determines whether this context or some of its ancestors is a linkage specification context that spec...
Definition: DeclBase.cpp:1129
clang::Decl::isInvalidDecl
bool isInvalidDecl() const
Definition: DeclBase.h:542
clang::Decl::getExternalSourceSymbolAttr
ExternalSourceSymbolAttr * getExternalSourceSymbolAttr() const
Looks on this and related declarations for an applicable external source symbol attribute.
Definition: DeclBase.cpp:450
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:1427
clang::ObjCRuntime::hasWeakClassImport
bool hasWeakClassImport() const
Does this runtime support weakly importing classes?
Definition: ObjCRuntime.h:346
clang::Decl::IDNS_Type
Types, declared with &#39;struct foo&#39;, typedefs, etc.
Definition: DeclBase.h:131
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:3593
clang::NamedDecl::getDeclName
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Definition: Decl.h:298
clang::DeclContext::Encloses
bool Encloses(const DeclContext *DC) const
Determine whether this declaration context encloses the declaration context DC.
Definition: DeclBase.cpp:1148
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:58
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:137
clang::ExternalASTSource::SetExternalVisibleDeclsForName
static DeclContextLookupResult SetExternalVisibleDeclsForName(const DeclContext *DC, DeclarationName Name, ArrayRef< NamedDecl *> Decls)
Definition: DeclBase.cpp:1324
clang::BlockPointerType::getPointeeType
QualType getPointeeType() const
Definition: Type.h:2654
clang::SourceLocation::print
void print(raw_ostream &OS, const SourceManager &SM) const
Definition: SourceLocation.cpp:44
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:155
clang::DeclContextLookupResult
The results of name lookup within a DeclContext.
Definition: DeclBase.h:1187
clang::DeclContextLookupResult::end
iterator end() const
Definition: DeclBase.h:1229
clang::DeclContext::Equals
bool Equals(const DeclContext *DC) const
Determine whether this declaration context is equivalent to the declaration context DC...
Definition: DeclBase.h:1872
DependentDiagnostic.h
clang::Module
Describes a module or submodule.
Definition: Module.h:65
llvm::SmallVectorImpl
Definition: LLVM.h:37
clang::AR_Available
Definition: DeclBase.h:74
clang::ExternalASTSource::updateOutOfDateIdentifier
virtual void updateOutOfDateIdentifier(IdentifierInfo &II)
Update an out-of-date identifier.
Definition: ExternalASTSource.h:145
clang::PartialDiagnostic::Storage
Definition: PartialDiagnostic.h:45
clang::DeclContext::getEnclosingNamespaceContext
DeclContext * getEnclosingNamespaceContext()
Retrieve the nearest enclosing namespace context.
Definition: DeclBase.cpp:1748
clang::LinkageSpecDecl::lang_c
Definition: DeclCXX.h:2838
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:110
clang::Decl::IDNS_Namespace
Namespaces, declared with &#39;namespace foo {}&#39;.
Definition: DeclBase.h:141
clang::Decl::isReferenced
bool isReferenced() const
Whether any declaration of this entity was referenced.
Definition: DeclBase.cpp:422
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:779
clang::DeclContext::buildLookup
StoredDeclsMap * buildLookup()
Ensure the lookup structure is fully-built and return it.
Definition: DeclBase.cpp:1530
clang::ExternalASTSource::SetNoExternalVisibleDeclsForName
static DeclContextLookupResult SetNoExternalVisibleDeclsForName(const DeclContext *DC, DeclarationName Name)
Definition: DeclBase.cpp:1309
clang::TranslationUnitDecl::getASTContext
ASTContext & getASTContext() const
Definition: Decl.h:120
clang::StoredDeclsList::isNull
bool isNull() const
Definition: DeclContextInternals.h:69
clang::ASTContext::eraseDeclAttrs
void eraseDeclAttrs(const Decl *D)
Erase the attributes corresponding to the given declaration.
Definition: ASTContext.cpp:1350
clang::Decl::getLexicalDeclContext
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC)...
Definition: DeclBase.h:821
clang::Decl::IDNS_Label
Labels, declared with &#39;x:&#39; and referenced with &#39;goto x&#39;.
Definition: DeclBase.h:118
clang::Decl::setLocalOwningModule
void setLocalOwningModule(Module *M)
Definition: DeclBase.h:739
clang::LinkageSpecDecl
Represents a linkage specification.
Definition: DeclCXX.h:2826
llvm::ArrayRef
Definition: LLVM.h:32
ASTMutationListener.h
clang::Decl::isExported
bool isExported() const
Whether this declaration is exported (by virtue of being lexically within an ExportDecl or by being a...
Definition: DeclBase.cpp:434
clang::Decl::IDNS_Ordinary
Ordinary names.
Definition: DeclBase.h:145
clang::Decl::getCanonicalDecl
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:870
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:1515
clang::AS_none
Definition: Specifiers.h:102
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:1595
clang::AvailabilityResult
AvailabilityResult
Captures the result of checking the availability of a declaration.
Definition: DeclBase.h:73
ExternalASTSource.h
Parent
NodeId Parent
Definition: ASTDiff.cpp:192
clang::Decl::getNextDeclInContext
Decl * getNextDeclInContext()
Definition: DeclBase.h:424
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:655
clang::DeclContext::using_directives
udir_range using_directives() const
Returns iterator range [First, Last) of UsingDirectiveDecls stored within this context.
Definition: DeclBase.cpp:1894
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:589
clang::Decl::IDNS_ObjCProtocol
Objective C @protocol.
Definition: DeclBase.h:148
clang::DeclContext::udir_range
llvm::iterator_range< udir_iterator > udir_range
Definition: DeclBase.h:2278
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:2005
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:961
clang::StoredDeclsList::removeExternalDecls
void removeExternalDecls()
Remove any declarations which were imported from an external AST source.
Definition: DeclContextInternals.h:127
clang::Decl::getID
int64_t getID() const
Definition: DeclBase.cpp:957
clang::DeclContext::isInlineNamespace
bool isInlineNamespace() const
Definition: DeclBase.cpp:1057
clang::DeclContext::getLexicalParent
DeclContext * getLexicalParent()
getLexicalParent - Returns the containing lexical DeclContext.
Definition: DeclBase.h:1768
clang::Decl::getDefiningAttr
const Attr * getDefiningAttr() const
Return this declaration&#39;s defining attribute if it has one.
Definition: DeclBase.cpp:475
LangOptions.h
Defines the clang::LangOptions interface.
Label
std::string Label
Definition: UsingDeclarationsSorter.cpp:70
clang::Decl::getIdentifierNamespaceForKind
static unsigned getIdentifierNamespaceForKind(Kind DK)
Definition: DeclBase.cpp:704
clang::DeclContext::containsDecl
bool containsDecl(Decl *D) const
Checks whether a declaration is in this context.
Definition: DeclBase.cpp:1384
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:179
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:1767
clang::Decl::getMostRecentDecl
Decl * getMostRecentDecl()
Retrieve the most recent declaration that declares the same entity as this declaration (which may be ...
Definition: DeclBase.h:968
clang::Decl::isLocalExternDecl
bool isLocalExternDecl()
Determine whether this is a block-scope declaration with linkage.
Definition: DeclBase.h:1053
clang::DeclContext::isFileContext
bool isFileContext() const
Definition: DeclBase.h:1818
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:427
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:1660
clang::DeclContext::getNonClosureAncestor
Decl * getNonClosureAncestor()
Find the nearest non-closure ancestor of this context, i.e.
Definition: DeclBase.cpp:1003
clang::ASTMutationListener
An abstract interface that should be implemented by listeners that want to be notified when an AST en...
Definition: ASTMutationListener.h:47
clang::Decl::isTemplateParameter
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:2422
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:1389
IdentifierTable.h
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
clang::DeclContext::isFunctionOrMethod
bool isFunctionOrMethod() const
Definition: DeclBase.h:1800
Stmt.h
clang::PartialDiagnostic::hasStorage
bool hasStorage() const
Definition: PartialDiagnostic.h:334
clang::LangOptions::ObjCRuntime
clang::ObjCRuntime ObjCRuntime
Definition: LangOptions.h:207
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:384
clang::DeclContext::getParent
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1752
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:1223
clang::SourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:208
clang::DeclContext::isDependentContext
bool isDependentContext() const
Determines whether this context is dependent on a template parameter.
Definition: DeclBase.cpp:1078
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
SM
const SourceManager & SM
Definition: Format.cpp:1490
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:30
clang::Decl::getFriendObjectKind
FriendObjectKind getFriendObjectKind() const
Determines whether this declaration is the object of a friend declaration and, if so...
Definition: DeclBase.h:1104
clang::ASTMutationListener::DeclarationMarkedUsed
virtual void DeclarationMarkedUsed(const Decl *D)
A declaration is marked used which was not previously marked used.
Definition: ASTMutationListener.h:115
clang::DeclContext::decls_empty
bool decls_empty() const
Definition: DeclBase.cpp:1377
clang::Decl::getAttrs
AttrVec & getAttrs()
Definition: DeclBase.h:479
clang::Decl::hasAttrs
bool hasAttrs() const
Definition: DeclBase.h:473
clang::ExternalASTSource
Abstract interface for external sources of AST nodes.
Definition: ExternalASTSource.h:63
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:1745
clang::DeclContext::makeDeclVisibleInContext
void makeDeclVisibleInContext(NamedDecl *D)
Makes a declaration visible within this context.
Definition: DeclBase.cpp:1785
clang::StoredDeclsList::getLookupResult
DeclContext::lookup_result getLookupResult()
getLookupResult - Return an array of all the decls that this list represents.
Definition: DeclContextInternals.h:145
clang::AR_Deprecated
Definition: DeclBase.h:76
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:1211
clang::LinkageSpecDecl::lang_cxx
Definition: DeclCXX.h:2839
clang::Decl::getVersionIntroduced
VersionTuple getVersionIntroduced() const
Retrieve the version of the target platform in which this declaration was introduced.
Definition: DeclBase.cpp:641
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:88
clang::Decl::IDNS_Member
Members, declared with object declarations within tag definitions.
Definition: DeclBase.h:137
clang::Decl::setModuleOwnershipKind
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:784
clang::DeclContext::decls_begin
decl_iterator decls_begin() const
Definition: DeclBase.cpp:1371
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3064
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:376
clang::DependentStoredDeclsMap
Definition: DeclContextInternals.h:252
clang::AS_public
Definition: Specifiers.h:99
clang::DeclContext::isStdNamespace
bool isStdNamespace() const
Definition: DeclBase.cpp:1062
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:1011
llvm::SmallVector
Definition: LLVM.h:36
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:695
clang::DeclContext::udir_iterator::operator*
UsingDirectiveDecl * operator*() const
Definition: DeclBase.cpp:1888
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:397
clang::StoredDeclsList
An array of decls optimized for the common case of only containing one entry.
Definition: DeclContextInternals.h:35
clang::Decl::dropAttrs
void dropAttrs()
Definition: DeclBase.cpp:833
clang::Decl::isWeakImported
bool isWeakImported() const
Determine whether this is a weak-imported symbol.
Definition: DeclBase.cpp:685
clang::ASTContext::Allocate
void * Allocate(size_t Size, unsigned Align=8) const
Definition: ASTContext.h:669
clang::DeclContext::decl_iterator
decl_iterator - Iterates through the declarations stored within this context.
Definition: DeclBase.h:1954
clang::StoredDeclsMap
Definition: DeclContextInternals.h:240
clang::Decl::redecls
redecl_range redecls() const
Returns an iterator range for all the redeclarations of the same decl.
Definition: DeclBase.h:941
Decl.h
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:22
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:108
clang::ExternalASTSource::getModule
virtual Module * getModule(unsigned ID)
Retrieve the module that corresponds to the given module ID.
Definition: ExternalASTSource.h:164
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1262
clang::TemplateDecl
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:399
clang::DeclContext::isRecord
bool isRecord() const
Definition: DeclBase.h:1827
clang::Decl::attrs
attr_range attrs() const
Definition: DeclBase.h:490
clang::DeclContext::getOuterLexicalRecordContext
RecordDecl * getOuterLexicalRecordContext()
Retrieve the outermost lexically enclosing record context.
Definition: DeclBase.cpp:1756
clang::DeclarationName
The name of a declaration.
Definition: DeclarationName.h:146
clang::Decl::getKind
Kind getKind() const
Definition: DeclBase.h:421
clang::Decl::getNonClosureContext
Decl * getNonClosureContext()
Find the innermost non-closure ancestor of this declaration, walking up through blocks, lambdas, etc.
Definition: DeclBase.cpp:999
clang::Decl::IDNS_Tag
Tags, declared with &#39;struct foo;&#39; and referenced with &#39;struct foo&#39;.
Definition: DeclBase.h:126
clang::ASTContext::getAllocator
llvm::BumpPtrAllocator & getAllocator() const
Definition: ASTContext.h:665
clang::ASTContext::getExternalSource
ExternalASTSource * getExternalSource() const
Retrieve a pointer to the external AST source associated with this AST context, if any...
Definition: ASTContext.h:1083
clang::DependentDiagnostic
A dependently-generated diagnostic.
Definition: DependentDiagnostic.h:37
clang::BlockPointerType
Pointer to a block type.
Definition: Type.h:2639
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:41
clang::Decl::setIsUsed
void setIsUsed()
Set whether the declaration is used, in the sense of odr-use.
Definition: DeclBase.h:562
DeclFriend.h
clang::LinkageSpecDecl::LanguageIDs
LanguageIDs
Represents the language in a linkage specification.
Definition: DeclCXX.h:2837
clang::Decl::getAttr
T * getAttr() const
Definition: DeclBase.h:527
clang::Decl::getOwningModuleID
unsigned getOwningModuleID() const
Retrieve the global ID of the module that owns this particular declaration.
Definition: DeclBase.h:707
clang::Decl::~Decl
virtual ~Decl()
clang::StoredDeclsList::setOnlyValue
void setOnlyValue(NamedDecl *ND)
Definition: DeclContextInternals.h:98
clang::DeclContext::getRedeclContext
DeclContext * getRedeclContext()
getRedeclContext - Retrieve the context in which an entity conflicts with other entities of the same ...
Definition: DeclBase.cpp:1730
clang::DeclContext::getExternCContext
const LinkageSpecDecl * getExternCContext() const
Retrieve the nearest enclosing C linkage specification context.
Definition: DeclBase.cpp:1133
clang::DeclContext::addDecl
void addDecl(Decl *D)
Add the declaration D into this context.
Definition: DeclBase.cpp:1507
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:412
clang::ASTContext::getASTMutationListener
ASTMutationListener * getASTMutationListener() const
Retrieve a pointer to the AST mutation listener associated with this AST context, if any...
Definition: ASTContext.h:1098
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:2201
clang::DeclContext::addHiddenDecl
void addHiddenDecl(Decl *D)
Add the declaration D to this context without modifying any lookup tables.
Definition: DeclBase.cpp:1481
clang::SourceLocation::isInvalid
bool isInvalid() const
Definition: SourceLocation.h:109
clang::DeclContext::BuildDeclChain
static std::pair< Decl *, Decl * > BuildDeclChain(ArrayRef< Decl *> Decls, bool FieldsAlreadyLoaded)
Build up a chain of declarations.
Definition: DeclBase.cpp:1240
clang::AttrSyntax::C
clang::Attr::isInherited
bool isInherited() const
Definition: Attr.h:98
clang::DeclContext::getLookupParent
DeclContext * getLookupParent()
Find the parent context of this context that will be used for unqualified name lookup.
Definition: DeclBase.cpp:1047
clang::Decl::addAttr
void addAttr(Attr *A)
Definition: DeclBase.cpp:840
clang::DeclContextLookupResult::begin
iterator begin() const
Definition: DeclBase.h:1228
clang::DeclContext::classof
static bool classof(const Decl *D)
Definition: DeclBase.cpp:1021
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::DeclContext::getParentASTContext
ASTContext & getParentASTContext() const
Definition: DeclBase.h:1781
clang::FunctionDecl::getSourceRange
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: Decl.cpp:3637
clang::Decl::Kind
Kind
Lists the kind of concrete classes of Decl.
Definition: DeclBase.h:90
max
__DEVICE__ int max(int __a, int __b)
Definition: __clang_cuda_device_functions.h:1611
clang::TranslationUnitDecl
The top declaration context.
Definition: Decl.h:108
clang::StoredDeclsMap::DestroyAll
static void DestroyAll(StoredDeclsMap *Map, bool Dependent)
Definition: DeclBase.cpp:1929
clang::Decl::PrintStats
static void PrintStats()
Definition: DeclBase.cpp:169
clang::NamedDecl::getMostRecentDecl
NamedDecl * getMostRecentDecl()
Definition: Decl.h:446
clang::DeclContext::getPrimaryContext
DeclContext * getPrimaryContext()
getPrimaryContext - There may be many different declarations of the same entity (including forward de...
Definition: DeclBase.cpp:1158
clang::LangOptions::trackLocalOwningModule
bool trackLocalOwningModule() const
Do we need to track the owning module for a local declaration?
Definition: LangOptions.h:268
clang::Decl::EnableStatistics
static void EnableStatistics()
Definition: DeclBase.cpp:165
clang::Decl::isModulePrivate
bool isModulePrivate() const
Whether this declaration was marked as being private to the module in which it was defined...
Definition: DeclBase.h:596
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:249
clang::DeclContext::isTranslationUnit
bool isTranslationUnit() const
Definition: DeclBase.h:1823
clang::Decl::setAccess
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:457
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:2916
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:471
clang::Type::isFunctionPointerType
bool isFunctionPointerType() const
Definition: Type.h:6320
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:1522
clang::Decl::isInStdNamespace
bool isInStdNamespace() const
Definition: DeclBase.cpp:357
clang::Decl::getTranslationUnitDecl
TranslationUnitDecl * getTranslationUnitDecl()
Definition: DeclBase.cpp:361
clang::ASTContext::getLangOpts
const LangOptions & getLangOpts() const
Definition: ASTContext.h:707
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:1144
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:906
clang::Attr
Attr - This represents one attribute.
Definition: Attr.h:44
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:505
clang::TagDecl::isBeingDefined
bool isBeingDefined() const
Return true if this decl is currently being defined.
Definition: Decl.h:3189
clang::Decl::IDNS_Using
This declaration is a using declaration.
Definition: DeclBase.h:164
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:1110