1 //===--- ASTReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the ASTReader::ReadDeclRecord method, which is the
11 // entrypoint for loading a decl.
13 //===----------------------------------------------------------------------===//
15 #include "clang/Serialization/ASTReader.h"
16 #include "ASTCommon.h"
17 #include "ASTReaderInternals.h"
18 #include "clang/AST/ASTConsumer.h"
19 #include "clang/AST/ASTContext.h"
20 #include "clang/AST/DeclCXX.h"
21 #include "clang/AST/DeclGroup.h"
22 #include "clang/AST/DeclTemplate.h"
23 #include "clang/AST/DeclVisitor.h"
24 #include "clang/AST/Expr.h"
25 #include "clang/Sema/IdentifierResolver.h"
26 #include "clang/Sema/Sema.h"
27 #include "clang/Sema/SemaDiagnostic.h"
28 #include "llvm/Support/SaveAndRestore.h"
29 using namespace clang;
30 using namespace clang::serialization;
32 //===----------------------------------------------------------------------===//
33 // Declaration deserialization
34 //===----------------------------------------------------------------------===//
37 class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
40 const DeclID ThisDeclID;
41 const unsigned RawLocation;
42 typedef ASTReader::RecordData RecordData;
43 const RecordData &Record;
45 TypeID TypeIDForTypeDecl;
49 uint64_t GetCurrentCursorOffset();
51 SourceLocation ReadSourceLocation(const RecordData &R, unsigned &I) {
52 return Reader.ReadSourceLocation(F, R, I);
55 SourceRange ReadSourceRange(const RecordData &R, unsigned &I) {
56 return Reader.ReadSourceRange(F, R, I);
59 TypeSourceInfo *GetTypeSourceInfo(const RecordData &R, unsigned &I) {
60 return Reader.GetTypeSourceInfo(F, R, I);
63 serialization::DeclID ReadDeclID(const RecordData &R, unsigned &I) {
64 return Reader.ReadDeclID(F, R, I);
67 Decl *ReadDecl(const RecordData &R, unsigned &I) {
68 return Reader.ReadDecl(F, R, I);
72 T *ReadDeclAs(const RecordData &R, unsigned &I) {
73 return Reader.ReadDeclAs<T>(F, R, I);
76 void ReadQualifierInfo(QualifierInfo &Info,
77 const RecordData &R, unsigned &I) {
78 Reader.ReadQualifierInfo(F, Info, R, I);
81 void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name,
82 const RecordData &R, unsigned &I) {
83 Reader.ReadDeclarationNameLoc(F, DNLoc, Name, R, I);
86 void ReadDeclarationNameInfo(DeclarationNameInfo &NameInfo,
87 const RecordData &R, unsigned &I) {
88 Reader.ReadDeclarationNameInfo(F, NameInfo, R, I);
91 serialization::SubmoduleID readSubmoduleID(const RecordData &R,
96 return Reader.getGlobalSubmoduleID(F, R[I++]);
99 Module *readModule(const RecordData &R, unsigned &I) {
100 return Reader.getSubmodule(readSubmoduleID(R, I));
103 void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data,
104 const RecordData &R, unsigned &I);
106 /// \brief RAII class used to capture the first ID within a redeclaration
107 /// chain and to introduce it into the list of pending redeclaration chains
110 /// The caller can choose not to introduce this ID into the redeclaration
111 /// chain by calling \c suppress().
112 class RedeclarableResult {
114 GlobalDeclID FirstID;
118 void operator=(RedeclarableResult &) LLVM_DELETED_FUNCTION;
121 RedeclarableResult(ASTReader &Reader, GlobalDeclID FirstID,
123 : Reader(Reader), FirstID(FirstID), Owning(true), DeclKind(DeclKind) { }
125 RedeclarableResult(const RedeclarableResult &Other)
126 : Reader(Other.Reader), FirstID(Other.FirstID), Owning(Other.Owning) ,
127 DeclKind(Other.DeclKind)
129 Other.Owning = false;
132 ~RedeclarableResult() {
133 if (FirstID && Owning && isRedeclarableDeclKind(DeclKind) &&
134 Reader.PendingDeclChainsKnown.insert(FirstID))
135 Reader.PendingDeclChains.push_back(FirstID);
138 /// \brief Retrieve the first ID.
139 GlobalDeclID getFirstID() const { return FirstID; }
141 /// \brief Do not introduce this declaration ID into the set of pending
142 /// declaration chains.
148 /// \brief Class used to capture the result of searching for an existing
149 /// declaration of a specific kind and name, along with the ability
150 /// to update the place where this result was found (the declaration
151 /// chain hanging off an identifier or the DeclContext we searched in)
153 class FindExistingResult {
157 mutable bool AddResult;
159 void operator=(FindExistingResult&) LLVM_DELETED_FUNCTION;
162 FindExistingResult(ASTReader &Reader)
163 : Reader(Reader), New(0), Existing(0), AddResult(false) { }
165 FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing)
166 : Reader(Reader), New(New), Existing(Existing), AddResult(true) { }
168 FindExistingResult(const FindExistingResult &Other)
169 : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
170 AddResult(Other.AddResult)
172 Other.AddResult = false;
175 ~FindExistingResult();
177 /// \brief Suppress the addition of this result into the known set of
179 void suppress() { AddResult = false; }
181 operator NamedDecl*() const { return Existing; }
184 operator T*() const { return dyn_cast_or_null<T>(Existing); }
187 FindExistingResult findExisting(NamedDecl *D);
190 ASTDeclReader(ASTReader &Reader, ModuleFile &F,
192 unsigned RawLocation,
193 const RecordData &Record, unsigned &Idx)
194 : Reader(Reader), F(F), ThisDeclID(thisDeclID),
195 RawLocation(RawLocation), Record(Record), Idx(Idx),
196 TypeIDForTypeDecl(0), HasPendingBody(false) { }
198 static void attachPreviousDecl(Decl *D, Decl *previous);
199 static void attachLatestDecl(Decl *D, Decl *latest);
201 /// \brief Determine whether this declaration has a pending body.
202 bool hasPendingBody() const { return HasPendingBody; }
206 void UpdateDecl(Decl *D, ModuleFile &ModuleFile,
207 const RecordData &Record);
209 static void setNextObjCCategory(ObjCCategoryDecl *Cat,
210 ObjCCategoryDecl *Next) {
211 Cat->NextClassCategory = Next;
214 void VisitDecl(Decl *D);
215 void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
216 void VisitNamedDecl(NamedDecl *ND);
217 void VisitLabelDecl(LabelDecl *LD);
218 void VisitNamespaceDecl(NamespaceDecl *D);
219 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
220 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
221 void VisitTypeDecl(TypeDecl *TD);
222 void VisitTypedefNameDecl(TypedefNameDecl *TD);
223 void VisitTypedefDecl(TypedefDecl *TD);
224 void VisitTypeAliasDecl(TypeAliasDecl *TD);
225 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
226 RedeclarableResult VisitTagDecl(TagDecl *TD);
227 void VisitEnumDecl(EnumDecl *ED);
228 RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD);
229 void VisitRecordDecl(RecordDecl *RD) { VisitRecordDeclImpl(RD); }
230 RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D);
231 void VisitCXXRecordDecl(CXXRecordDecl *D) { VisitCXXRecordDeclImpl(D); }
232 RedeclarableResult VisitClassTemplateSpecializationDeclImpl(
233 ClassTemplateSpecializationDecl *D);
234 void VisitClassTemplateSpecializationDecl(
235 ClassTemplateSpecializationDecl *D) {
236 VisitClassTemplateSpecializationDeclImpl(D);
238 void VisitClassTemplatePartialSpecializationDecl(
239 ClassTemplatePartialSpecializationDecl *D);
240 void VisitClassScopeFunctionSpecializationDecl(
241 ClassScopeFunctionSpecializationDecl *D);
243 VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D);
244 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D) {
245 VisitVarTemplateSpecializationDeclImpl(D);
247 void VisitVarTemplatePartialSpecializationDecl(
248 VarTemplatePartialSpecializationDecl *D);
249 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
250 void VisitValueDecl(ValueDecl *VD);
251 void VisitEnumConstantDecl(EnumConstantDecl *ECD);
252 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
253 void VisitDeclaratorDecl(DeclaratorDecl *DD);
254 void VisitFunctionDecl(FunctionDecl *FD);
255 void VisitCXXMethodDecl(CXXMethodDecl *D);
256 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
257 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
258 void VisitCXXConversionDecl(CXXConversionDecl *D);
259 void VisitFieldDecl(FieldDecl *FD);
260 void VisitMSPropertyDecl(MSPropertyDecl *FD);
261 void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
262 RedeclarableResult VisitVarDeclImpl(VarDecl *D);
263 void VisitVarDecl(VarDecl *VD) { VisitVarDeclImpl(VD); }
264 void VisitImplicitParamDecl(ImplicitParamDecl *PD);
265 void VisitParmVarDecl(ParmVarDecl *PD);
266 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
267 void VisitTemplateDecl(TemplateDecl *D);
268 RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
269 void VisitClassTemplateDecl(ClassTemplateDecl *D);
270 void VisitVarTemplateDecl(VarTemplateDecl *D);
271 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
272 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
273 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
274 void VisitUsingDecl(UsingDecl *D);
275 void VisitUsingShadowDecl(UsingShadowDecl *D);
276 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
277 void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
278 void VisitImportDecl(ImportDecl *D);
279 void VisitAccessSpecDecl(AccessSpecDecl *D);
280 void VisitFriendDecl(FriendDecl *D);
281 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
282 void VisitStaticAssertDecl(StaticAssertDecl *D);
283 void VisitBlockDecl(BlockDecl *BD);
284 void VisitCapturedDecl(CapturedDecl *CD);
285 void VisitEmptyDecl(EmptyDecl *D);
287 std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
290 RedeclarableResult VisitRedeclarable(Redeclarable<T> *D);
293 void mergeRedeclarable(Redeclarable<T> *D, RedeclarableResult &Redecl);
296 void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
297 RedeclarableResult &Redecl);
300 void mergeMergeable(Mergeable<T> *D);
302 // FIXME: Reorder according to DeclNodes.td?
303 void VisitObjCMethodDecl(ObjCMethodDecl *D);
304 void VisitObjCContainerDecl(ObjCContainerDecl *D);
305 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
306 void VisitObjCIvarDecl(ObjCIvarDecl *D);
307 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
308 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
309 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
310 void VisitObjCImplDecl(ObjCImplDecl *D);
311 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
312 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
313 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
314 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
315 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
316 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
320 uint64_t ASTDeclReader::GetCurrentCursorOffset() {
321 return F.DeclsCursor.GetCurrentBitNo() + F.GlobalBitOffset;
324 void ASTDeclReader::Visit(Decl *D) {
325 DeclVisitor<ASTDeclReader, void>::Visit(D);
327 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
329 DeclaratorDecl::ExtInfo *Info =
330 DD->DeclInfo.get<DeclaratorDecl::ExtInfo *>();
332 GetTypeSourceInfo(Record, Idx);
335 DD->DeclInfo = GetTypeSourceInfo(Record, Idx);
339 if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) {
340 // if we have a fully initialized TypeDecl, we can safely read its type now.
341 TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull());
342 } else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
343 // if we have a fully initialized TypeDecl, we can safely read its type now.
344 ID->TypeForDecl = Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull();
345 } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
346 // FunctionDecl's body was written last after all other Stmts/Exprs.
347 // We only read it if FD doesn't already have a body (e.g., from another
349 // FIXME: Also consider = default and = delete.
350 // FIXME: Can we diagnose ODR violations somehow?
352 Reader.PendingBodies[FD] = GetCurrentCursorOffset();
353 HasPendingBody = true;
358 void ASTDeclReader::VisitDecl(Decl *D) {
359 if (D->isTemplateParameter()) {
360 // We don't want to deserialize the DeclContext of a template
361 // parameter immediately, because the template parameter might be
362 // used in the formulation of its DeclContext. Use the translation
363 // unit DeclContext as a placeholder.
364 GlobalDeclID SemaDCIDForTemplateParmDecl = ReadDeclID(Record, Idx);
365 GlobalDeclID LexicalDCIDForTemplateParmDecl = ReadDeclID(Record, Idx);
366 Reader.addPendingDeclContextInfo(D,
367 SemaDCIDForTemplateParmDecl,
368 LexicalDCIDForTemplateParmDecl);
369 D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
371 DeclContext *SemaDC = ReadDeclAs<DeclContext>(Record, Idx);
372 DeclContext *LexicalDC = ReadDeclAs<DeclContext>(Record, Idx);
373 DeclContext *MergedSemaDC = Reader.MergedDeclContexts.lookup(SemaDC);
374 // Avoid calling setLexicalDeclContext() directly because it uses
375 // Decl::getASTContext() internally which is unsafe during derialization.
376 D->setDeclContextsImpl(MergedSemaDC ? MergedSemaDC : SemaDC, LexicalDC,
377 Reader.getContext());
379 D->setLocation(Reader.ReadSourceLocation(F, RawLocation));
380 D->setInvalidDecl(Record[Idx++]);
381 if (Record[Idx++]) { // hasAttrs
383 Reader.ReadAttributes(F, Attrs, Record, Idx);
384 // Avoid calling setAttrs() directly because it uses Decl::getASTContext()
385 // internally which is unsafe during derialization.
386 D->setAttrsImpl(Attrs, Reader.getContext());
388 D->setImplicit(Record[Idx++]);
389 D->Used = Record[Idx++];
390 D->setReferenced(Record[Idx++]);
391 D->setTopLevelDeclInObjCContainer(Record[Idx++]);
392 D->setAccess((AccessSpecifier)Record[Idx++]);
393 D->FromASTFile = true;
394 D->setModulePrivate(Record[Idx++]);
395 D->Hidden = D->isModulePrivate();
397 // Determine whether this declaration is part of a (sub)module. If so, it
398 // may not yet be visible.
399 if (unsigned SubmoduleID = readSubmoduleID(Record, Idx)) {
400 // Store the owning submodule ID in the declaration.
401 D->setOwningModuleID(SubmoduleID);
403 // Module-private declarations are never visible, so there is no work to do.
404 if (!D->isModulePrivate()) {
405 if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
406 if (Owner->NameVisibility != Module::AllVisible) {
407 // The owning module is not visible. Mark this declaration as hidden.
410 // Note that this declaration was hidden because its owning module is
412 Reader.HiddenNamesMap[Owner].push_back(D);
419 void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
420 llvm_unreachable("Translation units are not serialized");
423 void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) {
425 ND->setDeclName(Reader.ReadDeclarationName(F, Record, Idx));
428 void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) {
430 TD->setLocStart(ReadSourceLocation(Record, Idx));
431 // Delay type reading until after we have fully initialized the decl.
432 TypeIDForTypeDecl = Reader.getGlobalTypeID(F, Record[Idx++]);
435 void ASTDeclReader::VisitTypedefNameDecl(TypedefNameDecl *TD) {
436 RedeclarableResult Redecl = VisitRedeclarable(TD);
438 TypeSourceInfo *TInfo = GetTypeSourceInfo(Record, Idx);
439 if (Record[Idx++]) { // isModed
440 QualType modedT = Reader.readType(F, Record, Idx);
441 TD->setModedTypeSourceInfo(TInfo, modedT);
443 TD->setTypeSourceInfo(TInfo);
444 mergeRedeclarable(TD, Redecl);
447 void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
448 VisitTypedefNameDecl(TD);
451 void ASTDeclReader::VisitTypeAliasDecl(TypeAliasDecl *TD) {
452 VisitTypedefNameDecl(TD);
455 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitTagDecl(TagDecl *TD) {
456 RedeclarableResult Redecl = VisitRedeclarable(TD);
459 TD->IdentifierNamespace = Record[Idx++];
460 TD->setTagKind((TagDecl::TagKind)Record[Idx++]);
461 TD->setCompleteDefinition(Record[Idx++]);
462 TD->setEmbeddedInDeclarator(Record[Idx++]);
463 TD->setFreeStanding(Record[Idx++]);
464 TD->setCompleteDefinitionRequired(Record[Idx++]);
465 TD->setRBraceLoc(ReadSourceLocation(Record, Idx));
467 if (Record[Idx++]) { // hasExtInfo
468 TagDecl::ExtInfo *Info = new (Reader.getContext()) TagDecl::ExtInfo();
469 ReadQualifierInfo(*Info, Record, Idx);
470 TD->NamedDeclOrQualifier = Info;
472 TD->NamedDeclOrQualifier = ReadDeclAs<NamedDecl>(Record, Idx);
474 mergeRedeclarable(TD, Redecl);
478 void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
480 if (TypeSourceInfo *TI = Reader.GetTypeSourceInfo(F, Record, Idx))
481 ED->setIntegerTypeSourceInfo(TI);
483 ED->setIntegerType(Reader.readType(F, Record, Idx));
484 ED->setPromotionType(Reader.readType(F, Record, Idx));
485 ED->setNumPositiveBits(Record[Idx++]);
486 ED->setNumNegativeBits(Record[Idx++]);
487 ED->IsScoped = Record[Idx++];
488 ED->IsScopedUsingClassTag = Record[Idx++];
489 ED->IsFixed = Record[Idx++];
491 // If this is a definition subject to the ODR, and we already have a
492 // definition, merge this one into it.
493 if (ED->IsCompleteDefinition &&
494 Reader.getContext().getLangOpts().Modules &&
495 Reader.getContext().getLangOpts().CPlusPlus) {
496 if (EnumDecl *&OldDef = Reader.EnumDefinitions[ED->getCanonicalDecl()]) {
497 Reader.MergedDeclContexts.insert(std::make_pair(ED, OldDef));
498 ED->IsCompleteDefinition = false;
504 if (EnumDecl *InstED = ReadDeclAs<EnumDecl>(Record, Idx)) {
505 TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
506 SourceLocation POI = ReadSourceLocation(Record, Idx);
507 ED->setInstantiationOfMemberEnum(Reader.getContext(), InstED, TSK);
508 ED->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
512 ASTDeclReader::RedeclarableResult
513 ASTDeclReader::VisitRecordDeclImpl(RecordDecl *RD) {
514 RedeclarableResult Redecl = VisitTagDecl(RD);
515 RD->setHasFlexibleArrayMember(Record[Idx++]);
516 RD->setAnonymousStructOrUnion(Record[Idx++]);
517 RD->setHasObjectMember(Record[Idx++]);
518 RD->setHasVolatileMember(Record[Idx++]);
522 void ASTDeclReader::VisitValueDecl(ValueDecl *VD) {
524 VD->setType(Reader.readType(F, Record, Idx));
527 void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
530 ECD->setInitExpr(Reader.ReadExpr(F));
531 ECD->setInitVal(Reader.ReadAPSInt(Record, Idx));
535 void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
537 DD->setInnerLocStart(ReadSourceLocation(Record, Idx));
538 if (Record[Idx++]) { // hasExtInfo
539 DeclaratorDecl::ExtInfo *Info
540 = new (Reader.getContext()) DeclaratorDecl::ExtInfo();
541 ReadQualifierInfo(*Info, Record, Idx);
546 void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
547 RedeclarableResult Redecl = VisitRedeclarable(FD);
548 VisitDeclaratorDecl(FD);
550 ReadDeclarationNameLoc(FD->DNLoc, FD->getDeclName(), Record, Idx);
551 FD->IdentifierNamespace = Record[Idx++];
553 // FunctionDecl's body is handled last at ASTDeclReader::Visit,
554 // after everything else is read.
556 FD->SClass = (StorageClass)Record[Idx++];
557 FD->IsInline = Record[Idx++];
558 FD->IsInlineSpecified = Record[Idx++];
559 FD->IsVirtualAsWritten = Record[Idx++];
560 FD->IsPure = Record[Idx++];
561 FD->HasInheritedPrototype = Record[Idx++];
562 FD->HasWrittenPrototype = Record[Idx++];
563 FD->IsDeleted = Record[Idx++];
564 FD->IsTrivial = Record[Idx++];
565 FD->IsDefaulted = Record[Idx++];
566 FD->IsExplicitlyDefaulted = Record[Idx++];
567 FD->HasImplicitReturnZero = Record[Idx++];
568 FD->IsConstexpr = Record[Idx++];
569 FD->HasSkippedBody = Record[Idx++];
570 FD->IsLateTemplateParsed = Record[Idx++];
571 FD->setCachedLinkage(Linkage(Record[Idx++]));
572 FD->EndRangeLoc = ReadSourceLocation(Record, Idx);
574 switch ((FunctionDecl::TemplatedKind)Record[Idx++]) {
575 case FunctionDecl::TK_NonTemplate:
576 mergeRedeclarable(FD, Redecl);
578 case FunctionDecl::TK_FunctionTemplate:
579 FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>(Record,
582 case FunctionDecl::TK_MemberSpecialization: {
583 FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>(Record, Idx);
584 TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
585 SourceLocation POI = ReadSourceLocation(Record, Idx);
586 FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
587 FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
590 case FunctionDecl::TK_FunctionTemplateSpecialization: {
591 FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>(Record,
593 TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
595 // Template arguments.
596 SmallVector<TemplateArgument, 8> TemplArgs;
597 Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
599 // Template args as written.
600 SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
601 SourceLocation LAngleLoc, RAngleLoc;
602 bool HasTemplateArgumentsAsWritten = Record[Idx++];
603 if (HasTemplateArgumentsAsWritten) {
604 unsigned NumTemplateArgLocs = Record[Idx++];
605 TemplArgLocs.reserve(NumTemplateArgLocs);
606 for (unsigned i=0; i != NumTemplateArgLocs; ++i)
607 TemplArgLocs.push_back(
608 Reader.ReadTemplateArgumentLoc(F, Record, Idx));
610 LAngleLoc = ReadSourceLocation(Record, Idx);
611 RAngleLoc = ReadSourceLocation(Record, Idx);
614 SourceLocation POI = ReadSourceLocation(Record, Idx);
616 ASTContext &C = Reader.getContext();
617 TemplateArgumentList *TemplArgList
618 = TemplateArgumentList::CreateCopy(C, TemplArgs.data(), TemplArgs.size());
619 TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
620 for (unsigned i=0, e = TemplArgLocs.size(); i != e; ++i)
621 TemplArgsInfo.addArgument(TemplArgLocs[i]);
622 FunctionTemplateSpecializationInfo *FTInfo
623 = FunctionTemplateSpecializationInfo::Create(C, FD, Template, TSK,
625 HasTemplateArgumentsAsWritten ? &TemplArgsInfo : 0,
627 FD->TemplateOrSpecialization = FTInfo;
629 if (FD->isCanonicalDecl()) { // if canonical add to template's set.
630 // The template that contains the specializations set. It's not safe to
631 // use getCanonicalDecl on Template since it may still be initializing.
632 FunctionTemplateDecl *CanonTemplate
633 = ReadDeclAs<FunctionTemplateDecl>(Record, Idx);
634 // Get the InsertPos by FindNodeOrInsertPos() instead of calling
635 // InsertNode(FTInfo) directly to avoid the getASTContext() call in
636 // FunctionTemplateSpecializationInfo's Profile().
637 // We avoid getASTContext because a decl in the parent hierarchy may
639 llvm::FoldingSetNodeID ID;
640 FunctionTemplateSpecializationInfo::Profile(ID, TemplArgs.data(),
641 TemplArgs.size(), C);
643 FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
644 CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
646 CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
648 assert(Reader.getContext().getLangOpts().Modules &&
649 "already deserialized this template specialization");
650 // FIXME: This specialization is a redeclaration of one from another
656 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
658 UnresolvedSet<8> TemplDecls;
659 unsigned NumTemplates = Record[Idx++];
660 while (NumTemplates--)
661 TemplDecls.addDecl(ReadDeclAs<NamedDecl>(Record, Idx));
664 TemplateArgumentListInfo TemplArgs;
665 unsigned NumArgs = Record[Idx++];
667 TemplArgs.addArgument(Reader.ReadTemplateArgumentLoc(F, Record, Idx));
668 TemplArgs.setLAngleLoc(ReadSourceLocation(Record, Idx));
669 TemplArgs.setRAngleLoc(ReadSourceLocation(Record, Idx));
671 FD->setDependentTemplateSpecialization(Reader.getContext(),
672 TemplDecls, TemplArgs);
677 // Read in the parameters.
678 unsigned NumParams = Record[Idx++];
679 SmallVector<ParmVarDecl *, 16> Params;
680 Params.reserve(NumParams);
681 for (unsigned I = 0; I != NumParams; ++I)
682 Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx));
683 FD->setParams(Reader.getContext(), Params);
686 void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
689 // Load the body on-demand. Most clients won't care, because method
690 // definitions rarely show up in headers.
691 Reader.PendingBodies[MD] = GetCurrentCursorOffset();
692 HasPendingBody = true;
693 MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx));
694 MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx));
696 MD->setInstanceMethod(Record[Idx++]);
697 MD->setVariadic(Record[Idx++]);
698 MD->setPropertyAccessor(Record[Idx++]);
699 MD->setDefined(Record[Idx++]);
700 MD->IsOverriding = Record[Idx++];
701 MD->HasSkippedBody = Record[Idx++];
703 MD->IsRedeclaration = Record[Idx++];
704 MD->HasRedeclaration = Record[Idx++];
705 if (MD->HasRedeclaration)
706 Reader.getContext().setObjCMethodRedeclaration(MD,
707 ReadDeclAs<ObjCMethodDecl>(Record, Idx));
709 MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]);
710 MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
711 MD->SetRelatedResultType(Record[Idx++]);
712 MD->setResultType(Reader.readType(F, Record, Idx));
713 MD->setResultTypeSourceInfo(GetTypeSourceInfo(Record, Idx));
714 MD->DeclEndLoc = ReadSourceLocation(Record, Idx);
715 unsigned NumParams = Record[Idx++];
716 SmallVector<ParmVarDecl *, 16> Params;
717 Params.reserve(NumParams);
718 for (unsigned I = 0; I != NumParams; ++I)
719 Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx));
721 MD->SelLocsKind = Record[Idx++];
722 unsigned NumStoredSelLocs = Record[Idx++];
723 SmallVector<SourceLocation, 16> SelLocs;
724 SelLocs.reserve(NumStoredSelLocs);
725 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
726 SelLocs.push_back(ReadSourceLocation(Record, Idx));
728 MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
731 void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
733 CD->setAtStartLoc(ReadSourceLocation(Record, Idx));
734 CD->setAtEndRange(ReadSourceRange(Record, Idx));
737 void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
738 RedeclarableResult Redecl = VisitRedeclarable(ID);
739 VisitObjCContainerDecl(ID);
740 TypeIDForTypeDecl = Reader.getGlobalTypeID(F, Record[Idx++]);
741 mergeRedeclarable(ID, Redecl);
744 // Read the definition.
745 ID->allocateDefinitionData();
747 // Set the definition data of the canonical declaration, so other
748 // redeclarations will see it.
749 ID->getCanonicalDecl()->Data = ID->Data;
751 ObjCInterfaceDecl::DefinitionData &Data = ID->data();
753 // Read the superclass.
754 Data.SuperClass = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx);
755 Data.SuperClassLoc = ReadSourceLocation(Record, Idx);
757 Data.EndLoc = ReadSourceLocation(Record, Idx);
759 // Read the directly referenced protocols and their SourceLocations.
760 unsigned NumProtocols = Record[Idx++];
761 SmallVector<ObjCProtocolDecl *, 16> Protocols;
762 Protocols.reserve(NumProtocols);
763 for (unsigned I = 0; I != NumProtocols; ++I)
764 Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
765 SmallVector<SourceLocation, 16> ProtoLocs;
766 ProtoLocs.reserve(NumProtocols);
767 for (unsigned I = 0; I != NumProtocols; ++I)
768 ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
769 ID->setProtocolList(Protocols.data(), NumProtocols, ProtoLocs.data(),
770 Reader.getContext());
772 // Read the transitive closure of protocols referenced by this class.
773 NumProtocols = Record[Idx++];
775 Protocols.reserve(NumProtocols);
776 for (unsigned I = 0; I != NumProtocols; ++I)
777 Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
778 ID->data().AllReferencedProtocols.set(Protocols.data(), NumProtocols,
779 Reader.getContext());
781 // We will rebuild this list lazily.
784 // Note that we have deserialized a definition.
785 Reader.PendingDefinitions.insert(ID);
787 // Note that we've loaded this Objective-C class.
788 Reader.ObjCClassesLoaded.push_back(ID);
790 ID->Data = ID->getCanonicalDecl()->Data;
794 void ASTDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
796 IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record[Idx++]);
797 // This field will be built lazily.
799 bool synth = Record[Idx++];
800 IVD->setSynthesize(synth);
801 bool backingIvarReferencedInAccessor = Record[Idx++];
802 IVD->setBackingIvarReferencedInAccessor(backingIvarReferencedInAccessor);
805 void ASTDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
806 RedeclarableResult Redecl = VisitRedeclarable(PD);
807 VisitObjCContainerDecl(PD);
808 mergeRedeclarable(PD, Redecl);
811 // Read the definition.
812 PD->allocateDefinitionData();
814 // Set the definition data of the canonical declaration, so other
815 // redeclarations will see it.
816 PD->getCanonicalDecl()->Data = PD->Data;
818 unsigned NumProtoRefs = Record[Idx++];
819 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
820 ProtoRefs.reserve(NumProtoRefs);
821 for (unsigned I = 0; I != NumProtoRefs; ++I)
822 ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
823 SmallVector<SourceLocation, 16> ProtoLocs;
824 ProtoLocs.reserve(NumProtoRefs);
825 for (unsigned I = 0; I != NumProtoRefs; ++I)
826 ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
827 PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
828 Reader.getContext());
830 // Note that we have deserialized a definition.
831 Reader.PendingDefinitions.insert(PD);
833 PD->Data = PD->getCanonicalDecl()->Data;
837 void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
841 void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
842 VisitObjCContainerDecl(CD);
843 CD->setCategoryNameLoc(ReadSourceLocation(Record, Idx));
844 CD->setIvarLBraceLoc(ReadSourceLocation(Record, Idx));
845 CD->setIvarRBraceLoc(ReadSourceLocation(Record, Idx));
847 // Note that this category has been deserialized. We do this before
848 // deserializing the interface declaration, so that it will consider this
850 Reader.CategoriesDeserialized.insert(CD);
852 CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx);
853 unsigned NumProtoRefs = Record[Idx++];
854 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
855 ProtoRefs.reserve(NumProtoRefs);
856 for (unsigned I = 0; I != NumProtoRefs; ++I)
857 ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
858 SmallVector<SourceLocation, 16> ProtoLocs;
859 ProtoLocs.reserve(NumProtoRefs);
860 for (unsigned I = 0; I != NumProtoRefs; ++I)
861 ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
862 CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
863 Reader.getContext());
866 void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
868 CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
871 void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
873 D->setAtLoc(ReadSourceLocation(Record, Idx));
874 D->setLParenLoc(ReadSourceLocation(Record, Idx));
875 D->setType(GetTypeSourceInfo(Record, Idx));
876 // FIXME: stable encoding
877 D->setPropertyAttributes(
878 (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
879 D->setPropertyAttributesAsWritten(
880 (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
881 // FIXME: stable encoding
882 D->setPropertyImplementation(
883 (ObjCPropertyDecl::PropertyControl)Record[Idx++]);
884 D->setGetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector());
885 D->setSetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector());
886 D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx));
887 D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx));
888 D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>(Record, Idx));
891 void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
892 VisitObjCContainerDecl(D);
893 D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
896 void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
897 VisitObjCImplDecl(D);
898 D->setIdentifier(Reader.GetIdentifierInfo(F, Record, Idx));
899 D->CategoryNameLoc = ReadSourceLocation(Record, Idx);
902 void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
903 VisitObjCImplDecl(D);
904 D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
905 D->SuperLoc = ReadSourceLocation(Record, Idx);
906 D->setIvarLBraceLoc(ReadSourceLocation(Record, Idx));
907 D->setIvarRBraceLoc(ReadSourceLocation(Record, Idx));
908 D->setHasNonZeroConstructors(Record[Idx++]);
909 D->setHasDestructors(Record[Idx++]);
910 llvm::tie(D->IvarInitializers, D->NumIvarInitializers)
911 = Reader.ReadCXXCtorInitializers(F, Record, Idx);
915 void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
917 D->setAtLoc(ReadSourceLocation(Record, Idx));
918 D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>(Record, Idx));
919 D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>(Record, Idx);
920 D->IvarLoc = ReadSourceLocation(Record, Idx);
921 D->setGetterCXXConstructor(Reader.ReadExpr(F));
922 D->setSetterCXXAssignment(Reader.ReadExpr(F));
925 void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
926 VisitDeclaratorDecl(FD);
927 FD->Mutable = Record[Idx++];
928 if (int BitWidthOrInitializer = Record[Idx++]) {
929 FD->InitializerOrBitWidth.setInt(BitWidthOrInitializer - 1);
930 FD->InitializerOrBitWidth.setPointer(Reader.ReadExpr(F));
932 if (!FD->getDeclName()) {
933 if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>(Record, Idx))
934 Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
939 void ASTDeclReader::VisitMSPropertyDecl(MSPropertyDecl *PD) {
940 VisitDeclaratorDecl(PD);
941 PD->GetterId = Reader.GetIdentifierInfo(F, Record, Idx);
942 PD->SetterId = Reader.GetIdentifierInfo(F, Record, Idx);
945 void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
948 FD->ChainingSize = Record[Idx++];
949 assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
950 FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
952 for (unsigned I = 0; I != FD->ChainingSize; ++I)
953 FD->Chaining[I] = ReadDeclAs<NamedDecl>(Record, Idx);
956 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
957 RedeclarableResult Redecl = VisitRedeclarable(VD);
958 VisitDeclaratorDecl(VD);
960 VD->VarDeclBits.SClass = (StorageClass)Record[Idx++];
961 VD->VarDeclBits.TSCSpec = Record[Idx++];
962 VD->VarDeclBits.InitStyle = Record[Idx++];
963 VD->VarDeclBits.ExceptionVar = Record[Idx++];
964 VD->VarDeclBits.NRVOVariable = Record[Idx++];
965 VD->VarDeclBits.CXXForRangeDecl = Record[Idx++];
966 VD->VarDeclBits.ARCPseudoStrong = Record[Idx++];
967 VD->VarDeclBits.IsConstexpr = Record[Idx++];
968 VD->VarDeclBits.IsInitCapture = Record[Idx++];
969 VD->VarDeclBits.PreviousDeclInSameBlockScope = Record[Idx++];
970 Linkage VarLinkage = Linkage(Record[Idx++]);
971 VD->setCachedLinkage(VarLinkage);
973 // Reconstruct the one piece of the IdentifierNamespace that we need.
974 if (VarLinkage != NoLinkage &&
975 VD->getLexicalDeclContext()->isFunctionOrMethod())
976 VD->setLocalExternDecl();
978 // Only true variables (not parameters or implicit parameters) can be merged.
979 if (VD->getKind() != Decl::ParmVar && VD->getKind() != Decl::ImplicitParam)
980 mergeRedeclarable(VD, Redecl);
982 if (uint64_t Val = Record[Idx++]) {
983 VD->setInit(Reader.ReadExpr(F));
985 EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
986 Eval->CheckedICE = true;
987 Eval->IsICE = Val == 3;
992 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
994 switch ((VarKind)Record[Idx++]) {
998 VD->setDescribedVarTemplate(ReadDeclAs<VarTemplateDecl>(Record, Idx));
1000 case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1001 VarDecl *Tmpl = ReadDeclAs<VarDecl>(Record, Idx);
1002 TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
1003 SourceLocation POI = ReadSourceLocation(Record, Idx);
1004 Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1012 void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
1016 void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
1018 unsigned isObjCMethodParam = Record[Idx++];
1019 unsigned scopeDepth = Record[Idx++];
1020 unsigned scopeIndex = Record[Idx++];
1021 unsigned declQualifier = Record[Idx++];
1022 if (isObjCMethodParam) {
1023 assert(scopeDepth == 0);
1024 PD->setObjCMethodScopeInfo(scopeIndex);
1025 PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1027 PD->setScopeInfo(scopeDepth, scopeIndex);
1029 PD->ParmVarDeclBits.IsKNRPromoted = Record[Idx++];
1030 PD->ParmVarDeclBits.HasInheritedDefaultArg = Record[Idx++];
1031 if (Record[Idx++]) // hasUninstantiatedDefaultArg.
1032 PD->setUninstantiatedDefaultArg(Reader.ReadExpr(F));
1034 // FIXME: If this is a redeclaration of a function from another module, handle
1035 // inheritance of default arguments.
1038 void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
1040 AD->setAsmString(cast<StringLiteral>(Reader.ReadExpr(F)));
1041 AD->setRParenLoc(ReadSourceLocation(Record, Idx));
1044 void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) {
1046 BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadStmt(F)));
1047 BD->setSignatureAsWritten(GetTypeSourceInfo(Record, Idx));
1048 unsigned NumParams = Record[Idx++];
1049 SmallVector<ParmVarDecl *, 16> Params;
1050 Params.reserve(NumParams);
1051 for (unsigned I = 0; I != NumParams; ++I)
1052 Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx));
1053 BD->setParams(Params);
1055 BD->setIsVariadic(Record[Idx++]);
1056 BD->setBlockMissingReturnType(Record[Idx++]);
1057 BD->setIsConversionFromLambda(Record[Idx++]);
1059 bool capturesCXXThis = Record[Idx++];
1060 unsigned numCaptures = Record[Idx++];
1061 SmallVector<BlockDecl::Capture, 16> captures;
1062 captures.reserve(numCaptures);
1063 for (unsigned i = 0; i != numCaptures; ++i) {
1064 VarDecl *decl = ReadDeclAs<VarDecl>(Record, Idx);
1065 unsigned flags = Record[Idx++];
1066 bool byRef = (flags & 1);
1067 bool nested = (flags & 2);
1068 Expr *copyExpr = ((flags & 4) ? Reader.ReadExpr(F) : 0);
1070 captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1072 BD->setCaptures(Reader.getContext(), captures.begin(),
1073 captures.end(), capturesCXXThis);
1076 void ASTDeclReader::VisitCapturedDecl(CapturedDecl *CD) {
1078 // Body is set by VisitCapturedStmt.
1079 for (unsigned i = 0; i < CD->NumParams; ++i)
1080 CD->setParam(i, ReadDeclAs<ImplicitParamDecl>(Record, Idx));
1083 void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1085 D->setLanguage((LinkageSpecDecl::LanguageIDs)Record[Idx++]);
1086 D->setExternLoc(ReadSourceLocation(Record, Idx));
1087 D->setRBraceLoc(ReadSourceLocation(Record, Idx));
1090 void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
1092 D->setLocStart(ReadSourceLocation(Record, Idx));
1096 void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
1097 RedeclarableResult Redecl = VisitRedeclarable(D);
1099 D->setInline(Record[Idx++]);
1100 D->LocStart = ReadSourceLocation(Record, Idx);
1101 D->RBraceLoc = ReadSourceLocation(Record, Idx);
1102 // FIXME: At the point of this call, D->getCanonicalDecl() returns 0.
1103 mergeRedeclarable(D, Redecl);
1105 if (Redecl.getFirstID() == ThisDeclID) {
1106 // Each module has its own anonymous namespace, which is disjoint from
1107 // any other module's anonymous namespaces, so don't attach the anonymous
1108 // namespace at all.
1109 NamespaceDecl *Anon = ReadDeclAs<NamespaceDecl>(Record, Idx);
1110 if (F.Kind != MK_Module)
1111 D->setAnonymousNamespace(Anon);
1113 // Link this namespace back to the first declaration, which has already
1114 // been deserialized.
1115 D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1119 void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1121 D->NamespaceLoc = ReadSourceLocation(Record, Idx);
1122 D->IdentLoc = ReadSourceLocation(Record, Idx);
1123 D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
1124 D->Namespace = ReadDeclAs<NamedDecl>(Record, Idx);
1127 void ASTDeclReader::VisitUsingDecl(UsingDecl *D) {
1129 D->setUsingLoc(ReadSourceLocation(Record, Idx));
1130 D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
1131 ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx);
1132 D->FirstUsingShadow.setPointer(ReadDeclAs<UsingShadowDecl>(Record, Idx));
1133 D->setTypename(Record[Idx++]);
1134 if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>(Record, Idx))
1135 Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1138 void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
1139 RedeclarableResult Redecl = VisitRedeclarable(D);
1141 D->setTargetDecl(ReadDeclAs<NamedDecl>(Record, Idx));
1142 D->UsingOrNextShadow = ReadDeclAs<NamedDecl>(Record, Idx);
1143 UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>(Record, Idx);
1145 Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1146 mergeRedeclarable(D, Redecl);
1149 void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1151 D->UsingLoc = ReadSourceLocation(Record, Idx);
1152 D->NamespaceLoc = ReadSourceLocation(Record, Idx);
1153 D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
1154 D->NominatedNamespace = ReadDeclAs<NamedDecl>(Record, Idx);
1155 D->CommonAncestor = ReadDeclAs<DeclContext>(Record, Idx);
1158 void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1160 D->setUsingLoc(ReadSourceLocation(Record, Idx));
1161 D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
1162 ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx);
1165 void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
1166 UnresolvedUsingTypenameDecl *D) {
1168 D->TypenameLocation = ReadSourceLocation(Record, Idx);
1169 D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
1172 void ASTDeclReader::ReadCXXDefinitionData(
1173 struct CXXRecordDecl::DefinitionData &Data,
1174 const RecordData &Record, unsigned &Idx) {
1175 // Note: the caller has deserialized the IsLambda bit already.
1176 Data.UserDeclaredConstructor = Record[Idx++];
1177 Data.UserDeclaredSpecialMembers = Record[Idx++];
1178 Data.Aggregate = Record[Idx++];
1179 Data.PlainOldData = Record[Idx++];
1180 Data.Empty = Record[Idx++];
1181 Data.Polymorphic = Record[Idx++];
1182 Data.Abstract = Record[Idx++];
1183 Data.IsStandardLayout = Record[Idx++];
1184 Data.HasNoNonEmptyBases = Record[Idx++];
1185 Data.HasPrivateFields = Record[Idx++];
1186 Data.HasProtectedFields = Record[Idx++];
1187 Data.HasPublicFields = Record[Idx++];
1188 Data.HasMutableFields = Record[Idx++];
1189 Data.HasOnlyCMembers = Record[Idx++];
1190 Data.HasInClassInitializer = Record[Idx++];
1191 Data.HasUninitializedReferenceMember = Record[Idx++];
1192 Data.NeedOverloadResolutionForMoveConstructor = Record[Idx++];
1193 Data.NeedOverloadResolutionForMoveAssignment = Record[Idx++];
1194 Data.NeedOverloadResolutionForDestructor = Record[Idx++];
1195 Data.DefaultedMoveConstructorIsDeleted = Record[Idx++];
1196 Data.DefaultedMoveAssignmentIsDeleted = Record[Idx++];
1197 Data.DefaultedDestructorIsDeleted = Record[Idx++];
1198 Data.HasTrivialSpecialMembers = Record[Idx++];
1199 Data.HasIrrelevantDestructor = Record[Idx++];
1200 Data.HasConstexprNonCopyMoveConstructor = Record[Idx++];
1201 Data.DefaultedDefaultConstructorIsConstexpr = Record[Idx++];
1202 Data.HasConstexprDefaultConstructor = Record[Idx++];
1203 Data.HasNonLiteralTypeFieldsOrBases = Record[Idx++];
1204 Data.ComputedVisibleConversions = Record[Idx++];
1205 Data.UserProvidedDefaultConstructor = Record[Idx++];
1206 Data.DeclaredSpecialMembers = Record[Idx++];
1207 Data.ImplicitCopyConstructorHasConstParam = Record[Idx++];
1208 Data.ImplicitCopyAssignmentHasConstParam = Record[Idx++];
1209 Data.HasDeclaredCopyConstructorWithConstParam = Record[Idx++];
1210 Data.HasDeclaredCopyAssignmentWithConstParam = Record[Idx++];
1212 Data.NumBases = Record[Idx++];
1214 Data.Bases = Reader.readCXXBaseSpecifiers(F, Record, Idx);
1215 Data.NumVBases = Record[Idx++];
1217 Data.VBases = Reader.readCXXBaseSpecifiers(F, Record, Idx);
1219 Reader.ReadUnresolvedSet(F, Data.Conversions, Record, Idx);
1220 Reader.ReadUnresolvedSet(F, Data.VisibleConversions, Record, Idx);
1221 assert(Data.Definition && "Data.Definition should be already set!");
1222 Data.FirstFriend = ReadDeclID(Record, Idx);
1224 if (Data.IsLambda) {
1225 typedef LambdaExpr::Capture Capture;
1226 CXXRecordDecl::LambdaDefinitionData &Lambda
1227 = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1228 Lambda.Dependent = Record[Idx++];
1229 Lambda.IsGenericLambda = Record[Idx++];
1230 Lambda.CaptureDefault = Record[Idx++];
1231 Lambda.NumCaptures = Record[Idx++];
1232 Lambda.NumExplicitCaptures = Record[Idx++];
1233 Lambda.ManglingNumber = Record[Idx++];
1234 Lambda.ContextDecl = ReadDecl(Record, Idx);
1236 = (Capture*)Reader.Context.Allocate(sizeof(Capture)*Lambda.NumCaptures);
1237 Capture *ToCapture = Lambda.Captures;
1238 Lambda.MethodTyInfo = GetTypeSourceInfo(Record, Idx);
1239 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1240 SourceLocation Loc = ReadSourceLocation(Record, Idx);
1241 bool IsImplicit = Record[Idx++];
1242 LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record[Idx++]);
1245 *ToCapture++ = Capture(Loc, IsImplicit, Kind, 0, SourceLocation());
1249 VarDecl *Var = ReadDeclAs<VarDecl>(Record, Idx);
1250 SourceLocation EllipsisLoc = ReadSourceLocation(Record, Idx);
1251 *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1258 ASTDeclReader::RedeclarableResult
1259 ASTDeclReader::VisitCXXRecordDeclImpl(CXXRecordDecl *D) {
1260 RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1262 ASTContext &C = Reader.getContext();
1263 bool WasDefinition = Record[Idx++];
1264 if (WasDefinition) {
1265 // Determine whether this is a lambda closure type, so that we can
1266 // allocate the appropriate DefinitionData structure.
1267 bool IsLambda = Record[Idx++];
1269 D->DefinitionData = new (C) CXXRecordDecl::LambdaDefinitionData(D, 0,
1273 D->DefinitionData = new (C) struct CXXRecordDecl::DefinitionData(D);
1275 ReadCXXDefinitionData(*D->DefinitionData, Record, Idx);
1277 // Propagate the DefinitionData pointer to the canonical declaration, so
1278 // that all other deserialized declarations will see it.
1279 CXXRecordDecl *Canon = D->getCanonicalDecl();
1282 } else if (!Canon->DefinitionData) {
1283 Canon->DefinitionData = D->DefinitionData;
1285 // Note that we have deserialized a definition. Any declarations
1286 // deserialized before this one will be be given the DefinitionData
1287 // pointer at the end.
1288 Reader.PendingDefinitions.insert(D);
1290 // We have already deserialized a definition of this record. This
1291 // definition is no longer really a definition. Note that the pre-existing
1292 // definition is the *real* definition.
1293 // FIXME: Check DefinitionData for consistency with prior definition.
1294 Reader.MergedDeclContexts.insert(
1295 std::make_pair(D, D->getCanonicalDecl()->DefinitionData->Definition));
1296 D->IsCompleteDefinition = false;
1297 D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1300 // Propagate DefinitionData pointer from the canonical declaration.
1301 D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1305 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1307 switch ((CXXRecKind)Record[Idx++]) {
1308 case CXXRecNotTemplate:
1310 case CXXRecTemplate:
1311 D->TemplateOrInstantiation = ReadDeclAs<ClassTemplateDecl>(Record, Idx);
1313 case CXXRecMemberSpecialization: {
1314 CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>(Record, Idx);
1315 TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
1316 SourceLocation POI = ReadSourceLocation(Record, Idx);
1317 MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1318 MSI->setPointOfInstantiation(POI);
1319 D->TemplateOrInstantiation = MSI;
1324 // Lazily load the key function to avoid deserializing every method so we can
1326 if (WasDefinition) {
1327 DeclID KeyFn = ReadDeclID(Record, Idx);
1328 if (KeyFn && D->IsCompleteDefinition)
1329 C.KeyFunctions[D] = KeyFn;
1335 void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
1336 VisitFunctionDecl(D);
1337 unsigned NumOverridenMethods = Record[Idx++];
1338 while (NumOverridenMethods--) {
1339 // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
1340 // MD may be initializing.
1341 if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>(Record, Idx))
1342 Reader.getContext().addOverriddenMethod(D, MD);
1346 void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1347 VisitCXXMethodDecl(D);
1349 D->IsExplicitSpecified = Record[Idx++];
1350 llvm::tie(D->CtorInitializers, D->NumCtorInitializers)
1351 = Reader.ReadCXXCtorInitializers(F, Record, Idx);
1354 void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1355 VisitCXXMethodDecl(D);
1357 D->OperatorDelete = ReadDeclAs<FunctionDecl>(Record, Idx);
1360 void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
1361 VisitCXXMethodDecl(D);
1362 D->IsExplicitSpecified = Record[Idx++];
1365 void ASTDeclReader::VisitImportDecl(ImportDecl *D) {
1367 D->ImportedAndComplete.setPointer(readModule(Record, Idx));
1368 D->ImportedAndComplete.setInt(Record[Idx++]);
1369 SourceLocation *StoredLocs = reinterpret_cast<SourceLocation *>(D + 1);
1370 for (unsigned I = 0, N = Record.back(); I != N; ++I)
1371 StoredLocs[I] = ReadSourceLocation(Record, Idx);
1372 ++Idx; // The number of stored source locations.
1375 void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
1377 D->setColonLoc(ReadSourceLocation(Record, Idx));
1380 void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
1382 if (Record[Idx++]) // hasFriendDecl
1383 D->Friend = ReadDeclAs<NamedDecl>(Record, Idx);
1385 D->Friend = GetTypeSourceInfo(Record, Idx);
1386 for (unsigned i = 0; i != D->NumTPLists; ++i)
1387 D->getTPLists()[i] = Reader.ReadTemplateParameterList(F, Record, Idx);
1388 D->NextFriend = ReadDeclID(Record, Idx);
1389 D->UnsupportedFriend = (Record[Idx++] != 0);
1390 D->FriendLoc = ReadSourceLocation(Record, Idx);
1393 void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1395 unsigned NumParams = Record[Idx++];
1396 D->NumParams = NumParams;
1397 D->Params = new TemplateParameterList*[NumParams];
1398 for (unsigned i = 0; i != NumParams; ++i)
1399 D->Params[i] = Reader.ReadTemplateParameterList(F, Record, Idx);
1400 if (Record[Idx++]) // HasFriendDecl
1401 D->Friend = ReadDeclAs<NamedDecl>(Record, Idx);
1403 D->Friend = GetTypeSourceInfo(Record, Idx);
1404 D->FriendLoc = ReadSourceLocation(Record, Idx);
1407 void ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
1410 NamedDecl *TemplatedDecl = ReadDeclAs<NamedDecl>(Record, Idx);
1411 TemplateParameterList* TemplateParams
1412 = Reader.ReadTemplateParameterList(F, Record, Idx);
1413 D->init(TemplatedDecl, TemplateParams);
1415 // FIXME: If this is a redeclaration of a template from another module, handle
1416 // inheritance of default template arguments.
1419 ASTDeclReader::RedeclarableResult
1420 ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1421 RedeclarableResult Redecl = VisitRedeclarable(D);
1423 // Make sure we've allocated the Common pointer first. We do this before
1424 // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
1425 RedeclarableTemplateDecl *CanonD = D->getCanonicalDecl();
1426 if (!CanonD->Common) {
1427 CanonD->Common = CanonD->newCommon(Reader.getContext());
1428 Reader.PendingDefinitions.insert(CanonD);
1430 D->Common = CanonD->Common;
1432 // If this is the first declaration of the template, fill in the information
1433 // for the 'common' pointer.
1434 if (ThisDeclID == Redecl.getFirstID()) {
1435 if (RedeclarableTemplateDecl *RTD
1436 = ReadDeclAs<RedeclarableTemplateDecl>(Record, Idx)) {
1437 assert(RTD->getKind() == D->getKind() &&
1438 "InstantiatedFromMemberTemplate kind mismatch");
1439 D->setInstantiatedFromMemberTemplate(RTD);
1441 D->setMemberSpecialization();
1445 VisitTemplateDecl(D);
1446 D->IdentifierNamespace = Record[Idx++];
1448 mergeRedeclarable(D, Redecl);
1450 // If we merged the template with a prior declaration chain, merge the common
1452 // FIXME: Actually merge here, don't just overwrite.
1453 D->Common = D->getCanonicalDecl()->Common;
1458 void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1459 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
1461 if (ThisDeclID == Redecl.getFirstID()) {
1462 // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
1463 // the specializations.
1464 SmallVector<serialization::DeclID, 2> SpecIDs;
1465 SpecIDs.push_back(0);
1468 unsigned Size = Record[Idx++];
1470 for (unsigned I = 0; I != Size; ++I)
1471 SpecIDs.push_back(ReadDeclID(Record, Idx));
1473 // Partial specializations.
1474 Size = Record[Idx++];
1476 for (unsigned I = 0; I != Size; ++I)
1477 SpecIDs.push_back(ReadDeclID(Record, Idx));
1479 ClassTemplateDecl::Common *CommonPtr = D->getCommonPtr();
1481 typedef serialization::DeclID DeclID;
1483 // FIXME: Append specializations!
1484 CommonPtr->LazySpecializations
1485 = new (Reader.getContext()) DeclID [SpecIDs.size()];
1486 memcpy(CommonPtr->LazySpecializations, SpecIDs.data(),
1487 SpecIDs.size() * sizeof(DeclID));
1490 CommonPtr->InjectedClassNameType = Reader.readType(F, Record, Idx);
1494 /// TODO: Unify with ClassTemplateDecl version?
1495 /// May require unifying ClassTemplateDecl and
1496 /// VarTemplateDecl beyond TemplateDecl...
1497 void ASTDeclReader::VisitVarTemplateDecl(VarTemplateDecl *D) {
1498 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
1500 if (ThisDeclID == Redecl.getFirstID()) {
1501 // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
1502 // the specializations.
1503 SmallVector<serialization::DeclID, 2> SpecIDs;
1504 SpecIDs.push_back(0);
1507 unsigned Size = Record[Idx++];
1509 for (unsigned I = 0; I != Size; ++I)
1510 SpecIDs.push_back(ReadDeclID(Record, Idx));
1512 // Partial specializations.
1513 Size = Record[Idx++];
1515 for (unsigned I = 0; I != Size; ++I)
1516 SpecIDs.push_back(ReadDeclID(Record, Idx));
1518 VarTemplateDecl::Common *CommonPtr = D->getCommonPtr();
1520 typedef serialization::DeclID DeclID;
1522 // FIXME: Append specializations!
1523 CommonPtr->LazySpecializations =
1524 new (Reader.getContext()) DeclID[SpecIDs.size()];
1525 memcpy(CommonPtr->LazySpecializations, SpecIDs.data(),
1526 SpecIDs.size() * sizeof(DeclID));
1531 ASTDeclReader::RedeclarableResult
1532 ASTDeclReader::VisitClassTemplateSpecializationDeclImpl(
1533 ClassTemplateSpecializationDecl *D) {
1534 RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
1536 ASTContext &C = Reader.getContext();
1537 if (Decl *InstD = ReadDecl(Record, Idx)) {
1538 if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
1539 D->SpecializedTemplate = CTD;
1541 SmallVector<TemplateArgument, 8> TemplArgs;
1542 Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
1543 TemplateArgumentList *ArgList
1544 = TemplateArgumentList::CreateCopy(C, TemplArgs.data(),
1546 ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
1547 = new (C) ClassTemplateSpecializationDecl::
1548 SpecializedPartialSpecialization();
1549 PS->PartialSpecialization
1550 = cast<ClassTemplatePartialSpecializationDecl>(InstD);
1551 PS->TemplateArgs = ArgList;
1552 D->SpecializedTemplate = PS;
1556 SmallVector<TemplateArgument, 8> TemplArgs;
1557 Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
1558 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs.data(),
1560 D->PointOfInstantiation = ReadSourceLocation(Record, Idx);
1561 D->SpecializationKind = (TemplateSpecializationKind)Record[Idx++];
1563 bool writtenAsCanonicalDecl = Record[Idx++];
1564 if (writtenAsCanonicalDecl) {
1565 ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>(Record,Idx);
1566 if (D->isCanonicalDecl()) { // It's kept in the folding set.
1567 // Set this as, or find, the canonical declaration for this specialization
1568 ClassTemplateSpecializationDecl *CanonSpec;
1569 if (ClassTemplatePartialSpecializationDecl *Partial =
1570 dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
1571 CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
1572 .GetOrInsertNode(Partial);
1575 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
1577 // If there was already a canonical specialization, merge into it.
1578 if (CanonSpec != D) {
1579 mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
1581 // This declaration might be a definition. Merge with any existing
1583 if (D->DefinitionData) {
1584 if (!CanonSpec->DefinitionData) {
1585 CanonSpec->DefinitionData = D->DefinitionData;
1587 // FIXME: Check DefinitionData for consistency with prior definition
1588 Reader.PendingDefinitions.erase(D);
1589 Reader.MergedDeclContexts.insert(
1590 std::make_pair(D, CanonSpec->DefinitionData->Definition));
1591 D->IsCompleteDefinition = false;
1592 D->DefinitionData = CanonSpec->DefinitionData;
1600 if (TypeSourceInfo *TyInfo = GetTypeSourceInfo(Record, Idx)) {
1601 ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
1602 = new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
1603 ExplicitInfo->TypeAsWritten = TyInfo;
1604 ExplicitInfo->ExternLoc = ReadSourceLocation(Record, Idx);
1605 ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation(Record, Idx);
1606 D->ExplicitInfo = ExplicitInfo;
1612 void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
1613 ClassTemplatePartialSpecializationDecl *D) {
1614 RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
1616 D->TemplateParams = Reader.ReadTemplateParameterList(F, Record, Idx);
1617 D->ArgsAsWritten = Reader.ReadASTTemplateArgumentListInfo(F, Record, Idx);
1619 // These are read/set from/to the first declaration.
1620 if (ThisDeclID == Redecl.getFirstID()) {
1621 D->InstantiatedFromMember.setPointer(
1622 ReadDeclAs<ClassTemplatePartialSpecializationDecl>(Record, Idx));
1623 D->InstantiatedFromMember.setInt(Record[Idx++]);
1627 void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
1628 ClassScopeFunctionSpecializationDecl *D) {
1630 D->Specialization = ReadDeclAs<CXXMethodDecl>(Record, Idx);
1633 void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
1634 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
1636 if (ThisDeclID == Redecl.getFirstID()) {
1637 // This FunctionTemplateDecl owns a CommonPtr; read it.
1639 // Read the function specialization declaration IDs. The specializations
1640 // themselves will be loaded if they're needed.
1641 if (unsigned NumSpecs = Record[Idx++]) {
1642 // FIXME: Append specializations!
1643 FunctionTemplateDecl::Common *CommonPtr = D->getCommonPtr();
1644 CommonPtr->LazySpecializations = new (Reader.getContext())
1645 serialization::DeclID[NumSpecs + 1];
1646 CommonPtr->LazySpecializations[0] = NumSpecs;
1647 for (unsigned I = 0; I != NumSpecs; ++I)
1648 CommonPtr->LazySpecializations[I + 1] = ReadDeclID(Record, Idx);
1653 /// TODO: Unify with ClassTemplateSpecializationDecl version?
1654 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
1655 /// VarTemplate(Partial)SpecializationDecl with a new data
1656 /// structure Template(Partial)SpecializationDecl, and
1657 /// using Template(Partial)SpecializationDecl as input type.
1658 ASTDeclReader::RedeclarableResult
1659 ASTDeclReader::VisitVarTemplateSpecializationDeclImpl(
1660 VarTemplateSpecializationDecl *D) {
1661 RedeclarableResult Redecl = VisitVarDeclImpl(D);
1663 ASTContext &C = Reader.getContext();
1664 if (Decl *InstD = ReadDecl(Record, Idx)) {
1665 if (VarTemplateDecl *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
1666 D->SpecializedTemplate = VTD;
1668 SmallVector<TemplateArgument, 8> TemplArgs;
1669 Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
1670 TemplateArgumentList *ArgList = TemplateArgumentList::CreateCopy(
1671 C, TemplArgs.data(), TemplArgs.size());
1672 VarTemplateSpecializationDecl::SpecializedPartialSpecialization *PS =
1674 VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
1675 PS->PartialSpecialization =
1676 cast<VarTemplatePartialSpecializationDecl>(InstD);
1677 PS->TemplateArgs = ArgList;
1678 D->SpecializedTemplate = PS;
1683 if (TypeSourceInfo *TyInfo = GetTypeSourceInfo(Record, Idx)) {
1684 VarTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo =
1685 new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
1686 ExplicitInfo->TypeAsWritten = TyInfo;
1687 ExplicitInfo->ExternLoc = ReadSourceLocation(Record, Idx);
1688 ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation(Record, Idx);
1689 D->ExplicitInfo = ExplicitInfo;
1692 SmallVector<TemplateArgument, 8> TemplArgs;
1693 Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
1695 TemplateArgumentList::CreateCopy(C, TemplArgs.data(), TemplArgs.size());
1696 D->PointOfInstantiation = ReadSourceLocation(Record, Idx);
1697 D->SpecializationKind = (TemplateSpecializationKind)Record[Idx++];
1699 bool writtenAsCanonicalDecl = Record[Idx++];
1700 if (writtenAsCanonicalDecl) {
1701 VarTemplateDecl *CanonPattern = ReadDeclAs<VarTemplateDecl>(Record, Idx);
1702 if (D->isCanonicalDecl()) { // It's kept in the folding set.
1703 if (VarTemplatePartialSpecializationDecl *Partial =
1704 dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
1705 CanonPattern->getCommonPtr()->PartialSpecializations
1706 .GetOrInsertNode(Partial);
1708 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
1716 /// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
1717 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
1718 /// VarTemplate(Partial)SpecializationDecl with a new data
1719 /// structure Template(Partial)SpecializationDecl, and
1720 /// using Template(Partial)SpecializationDecl as input type.
1721 void ASTDeclReader::VisitVarTemplatePartialSpecializationDecl(
1722 VarTemplatePartialSpecializationDecl *D) {
1723 RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
1725 D->TemplateParams = Reader.ReadTemplateParameterList(F, Record, Idx);
1726 D->ArgsAsWritten = Reader.ReadASTTemplateArgumentListInfo(F, Record, Idx);
1728 // These are read/set from/to the first declaration.
1729 if (ThisDeclID == Redecl.getFirstID()) {
1730 D->InstantiatedFromMember.setPointer(
1731 ReadDeclAs<VarTemplatePartialSpecializationDecl>(Record, Idx));
1732 D->InstantiatedFromMember.setInt(Record[Idx++]);
1736 void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
1739 D->setDeclaredWithTypename(Record[Idx++]);
1741 bool Inherited = Record[Idx++];
1742 TypeSourceInfo *DefArg = GetTypeSourceInfo(Record, Idx);
1743 D->setDefaultArgument(DefArg, Inherited);
1746 void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
1747 VisitDeclaratorDecl(D);
1748 // TemplateParmPosition.
1749 D->setDepth(Record[Idx++]);
1750 D->setPosition(Record[Idx++]);
1751 if (D->isExpandedParameterPack()) {
1752 void **Data = reinterpret_cast<void **>(D + 1);
1753 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
1754 Data[2*I] = Reader.readType(F, Record, Idx).getAsOpaquePtr();
1755 Data[2*I + 1] = GetTypeSourceInfo(Record, Idx);
1758 // Rest of NonTypeTemplateParmDecl.
1759 D->ParameterPack = Record[Idx++];
1760 if (Record[Idx++]) {
1761 Expr *DefArg = Reader.ReadExpr(F);
1762 bool Inherited = Record[Idx++];
1763 D->setDefaultArgument(DefArg, Inherited);
1768 void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1769 VisitTemplateDecl(D);
1770 // TemplateParmPosition.
1771 D->setDepth(Record[Idx++]);
1772 D->setPosition(Record[Idx++]);
1773 if (D->isExpandedParameterPack()) {
1774 void **Data = reinterpret_cast<void **>(D + 1);
1775 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
1777 Data[I] = Reader.ReadTemplateParameterList(F, Record, Idx);
1779 // Rest of TemplateTemplateParmDecl.
1780 TemplateArgumentLoc Arg = Reader.ReadTemplateArgumentLoc(F, Record, Idx);
1781 bool IsInherited = Record[Idx++];
1782 D->setDefaultArgument(Arg, IsInherited);
1783 D->ParameterPack = Record[Idx++];
1787 void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
1788 VisitRedeclarableTemplateDecl(D);
1791 void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
1793 D->AssertExprAndFailed.setPointer(Reader.ReadExpr(F));
1794 D->AssertExprAndFailed.setInt(Record[Idx++]);
1795 D->Message = cast<StringLiteral>(Reader.ReadExpr(F));
1796 D->RParenLoc = ReadSourceLocation(Record, Idx);
1799 void ASTDeclReader::VisitEmptyDecl(EmptyDecl *D) {
1803 std::pair<uint64_t, uint64_t>
1804 ASTDeclReader::VisitDeclContext(DeclContext *DC) {
1805 uint64_t LexicalOffset = Record[Idx++];
1806 uint64_t VisibleOffset = Record[Idx++];
1807 return std::make_pair(LexicalOffset, VisibleOffset);
1810 template <typename T>
1811 ASTDeclReader::RedeclarableResult
1812 ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
1813 DeclID FirstDeclID = ReadDeclID(Record, Idx);
1815 // 0 indicates that this declaration was the only declaration of its entity,
1816 // and is used for space optimization.
1817 if (FirstDeclID == 0)
1818 FirstDeclID = ThisDeclID;
1820 T *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
1821 if (FirstDecl != D) {
1822 // We delay loading of the redeclaration chain to avoid deeply nested calls.
1823 // We temporarily set the first (canonical) declaration as the previous one
1824 // which is the one that matters and mark the real previous DeclID to be
1825 // loaded & attached later on.
1826 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(FirstDecl);
1829 // Note that this declaration has been deserialized.
1830 Reader.RedeclsDeserialized.insert(static_cast<T *>(D));
1832 // The result structure takes care to note that we need to load the
1833 // other declaration chains for this ID.
1834 return RedeclarableResult(Reader, FirstDeclID,
1835 static_cast<T *>(D)->getKind());
1838 /// \brief Attempts to merge the given declaration (D) with another declaration
1839 /// of the same entity.
1840 template<typename T>
1841 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *D,
1842 RedeclarableResult &Redecl) {
1843 // If modules are not available, there is no reason to perform this merge.
1844 if (!Reader.getContext().getLangOpts().Modules)
1847 if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
1848 if (T *Existing = ExistingRes)
1849 mergeRedeclarable(D, Existing, Redecl);
1852 /// \brief Attempts to merge the given declaration (D) with another declaration
1853 /// of the same entity.
1854 template<typename T>
1855 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *D, T *Existing,
1856 RedeclarableResult &Redecl) {
1857 T *ExistingCanon = Existing->getCanonicalDecl();
1858 T *DCanon = static_cast<T*>(D)->getCanonicalDecl();
1859 if (ExistingCanon != DCanon) {
1860 // Have our redeclaration link point back at the canonical declaration
1861 // of the existing declaration, so that this declaration has the
1862 // appropriate canonical declaration.
1863 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
1865 // When we merge a namespace, update its pointer to the first namespace.
1866 if (NamespaceDecl *Namespace
1867 = dyn_cast<NamespaceDecl>(static_cast<T*>(D))) {
1868 Namespace->AnonOrFirstNamespaceAndInline.setPointer(
1869 static_cast<NamespaceDecl *>(static_cast<void*>(ExistingCanon)));
1872 // Don't introduce DCanon into the set of pending declaration chains.
1875 // Introduce ExistingCanon into the set of pending declaration chains,
1876 // if in fact it came from a module file.
1877 if (ExistingCanon->isFromASTFile()) {
1878 GlobalDeclID ExistingCanonID = ExistingCanon->getGlobalID();
1879 assert(ExistingCanonID && "Unrecorded canonical declaration ID?");
1880 if (Reader.PendingDeclChainsKnown.insert(ExistingCanonID))
1881 Reader.PendingDeclChains.push_back(ExistingCanonID);
1884 // If this declaration was the canonical declaration, make a note of
1885 // that. We accept the linear algorithm here because the number of
1886 // unique canonical declarations of an entity should always be tiny.
1887 if (DCanon == static_cast<T*>(D)) {
1888 SmallVectorImpl<DeclID> &Merged = Reader.MergedDecls[ExistingCanon];
1889 if (std::find(Merged.begin(), Merged.end(), Redecl.getFirstID())
1891 Merged.push_back(Redecl.getFirstID());
1893 // If ExistingCanon did not come from a module file, introduce the
1894 // first declaration that *does* come from a module file to the
1895 // set of pending declaration chains, so that we merge this
1897 if (!ExistingCanon->isFromASTFile() &&
1898 Reader.PendingDeclChainsKnown.insert(Redecl.getFirstID()))
1899 Reader.PendingDeclChains.push_back(Merged[0]);
1904 /// \brief Attempts to merge the given declaration (D) with another declaration
1905 /// of the same entity, for the case where the entity is not actually
1906 /// redeclarable. This happens, for instance, when merging the fields of
1907 /// identical class definitions from two different modules.
1908 template<typename T>
1909 void ASTDeclReader::mergeMergeable(Mergeable<T> *D) {
1910 // If modules are not available, there is no reason to perform this merge.
1911 if (!Reader.getContext().getLangOpts().Modules)
1914 // ODR-based merging is only performed in C++. In C, identically-named things
1915 // in different translation units are not redeclarations (but may still have
1916 // compatible types).
1917 if (!Reader.getContext().getLangOpts().CPlusPlus)
1920 if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
1921 if (T *Existing = ExistingRes)
1922 Reader.Context.setPrimaryMergedDecl(static_cast<T*>(D),
1923 Existing->getCanonicalDecl());
1926 void ASTDeclReader::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1928 unsigned NumVars = D->varlist_size();
1929 SmallVector<Expr *, 16> Vars;
1930 Vars.reserve(NumVars);
1931 for (unsigned i = 0; i != NumVars; ++i) {
1932 Vars.push_back(Reader.ReadExpr(F));
1937 //===----------------------------------------------------------------------===//
1938 // Attribute Reading
1939 //===----------------------------------------------------------------------===//
1941 /// \brief Reads attributes from the current stream position.
1942 void ASTReader::ReadAttributes(ModuleFile &F, AttrVec &Attrs,
1943 const RecordData &Record, unsigned &Idx) {
1944 for (unsigned i = 0, e = Record[Idx++]; i != e; ++i) {
1946 attr::Kind Kind = (attr::Kind)Record[Idx++];
1947 SourceRange Range = ReadSourceRange(F, Record, Idx);
1949 #include "clang/Serialization/AttrPCHRead.inc"
1951 assert(New && "Unable to decode attribute?");
1952 Attrs.push_back(New);
1956 //===----------------------------------------------------------------------===//
1957 // ASTReader Implementation
1958 //===----------------------------------------------------------------------===//
1960 /// \brief Note that we have loaded the declaration with the given
1963 /// This routine notes that this declaration has already been loaded,
1964 /// so that future GetDecl calls will return this declaration rather
1965 /// than trying to load a new declaration.
1966 inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
1967 assert(!DeclsLoaded[Index] && "Decl loaded twice?");
1968 DeclsLoaded[Index] = D;
1972 /// \brief Determine whether the consumer will be interested in seeing
1973 /// this declaration (via HandleTopLevelDecl).
1975 /// This routine should return true for anything that might affect
1976 /// code generation, e.g., inline function definitions, Objective-C
1977 /// declarations with metadata, etc.
1978 static bool isConsumerInterestedIn(Decl *D, bool HasBody) {
1979 // An ObjCMethodDecl is never considered as "interesting" because its
1980 // implementation container always is.
1982 if (isa<FileScopeAsmDecl>(D) ||
1983 isa<ObjCProtocolDecl>(D) ||
1984 isa<ObjCImplDecl>(D))
1986 if (VarDecl *Var = dyn_cast<VarDecl>(D))
1987 return Var->isFileVarDecl() &&
1988 Var->isThisDeclarationADefinition() == VarDecl::Definition;
1989 if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D))
1990 return Func->doesThisDeclarationHaveABody() || HasBody;
1995 /// \brief Get the correct cursor and offset for loading a declaration.
1996 ASTReader::RecordLocation
1997 ASTReader::DeclCursorForID(DeclID ID, unsigned &RawLocation) {
1998 // See if there's an override.
1999 DeclReplacementMap::iterator It = ReplacedDecls.find(ID);
2000 if (It != ReplacedDecls.end()) {
2001 RawLocation = It->second.RawLoc;
2002 return RecordLocation(It->second.Mod, It->second.Offset);
2005 GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2006 assert(I != GlobalDeclMap.end() && "Corrupted global declaration map");
2007 ModuleFile *M = I->second;
2009 DOffs = M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
2010 RawLocation = DOffs.Loc;
2011 return RecordLocation(M, DOffs.BitOffset);
2014 ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2015 ContinuousRangeMap<uint64_t, ModuleFile*, 4>::iterator I
2016 = GlobalBitOffsetsMap.find(GlobalOffset);
2018 assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map");
2019 return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2022 uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset) {
2023 return LocalOffset + M.GlobalBitOffset;
2026 static bool isSameTemplateParameterList(const TemplateParameterList *X,
2027 const TemplateParameterList *Y);
2029 /// \brief Determine whether two template parameters are similar enough
2030 /// that they may be used in declarations of the same template.
2031 static bool isSameTemplateParameter(const NamedDecl *X,
2032 const NamedDecl *Y) {
2033 if (X->getKind() != Y->getKind())
2036 if (const TemplateTypeParmDecl *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2037 const TemplateTypeParmDecl *TY = cast<TemplateTypeParmDecl>(Y);
2038 return TX->isParameterPack() == TY->isParameterPack();
2041 if (const NonTypeTemplateParmDecl *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2042 const NonTypeTemplateParmDecl *TY = cast<NonTypeTemplateParmDecl>(Y);
2043 return TX->isParameterPack() == TY->isParameterPack() &&
2044 TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2047 const TemplateTemplateParmDecl *TX = cast<TemplateTemplateParmDecl>(X);
2048 const TemplateTemplateParmDecl *TY = cast<TemplateTemplateParmDecl>(Y);
2049 return TX->isParameterPack() == TY->isParameterPack() &&
2050 isSameTemplateParameterList(TX->getTemplateParameters(),
2051 TY->getTemplateParameters());
2054 /// \brief Determine whether two template parameter lists are similar enough
2055 /// that they may be used in declarations of the same template.
2056 static bool isSameTemplateParameterList(const TemplateParameterList *X,
2057 const TemplateParameterList *Y) {
2058 if (X->size() != Y->size())
2061 for (unsigned I = 0, N = X->size(); I != N; ++I)
2062 if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
2068 /// \brief Determine whether the two declarations refer to the same entity.
2069 static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
2070 assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!");
2075 // Must be in the same context.
2076 if (!X->getDeclContext()->getRedeclContext()->Equals(
2077 Y->getDeclContext()->getRedeclContext()))
2080 // Two typedefs refer to the same entity if they have the same underlying
2082 if (TypedefNameDecl *TypedefX = dyn_cast<TypedefNameDecl>(X))
2083 if (TypedefNameDecl *TypedefY = dyn_cast<TypedefNameDecl>(Y))
2084 return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
2085 TypedefY->getUnderlyingType());
2087 // Must have the same kind.
2088 if (X->getKind() != Y->getKind())
2091 // Objective-C classes and protocols with the same name always match.
2092 if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
2095 if (isa<ClassTemplateSpecializationDecl>(X)) {
2096 // No need to handle these here: we merge them when adding them to the
2101 // Compatible tags match.
2102 if (TagDecl *TagX = dyn_cast<TagDecl>(X)) {
2103 TagDecl *TagY = cast<TagDecl>(Y);
2104 return (TagX->getTagKind() == TagY->getTagKind()) ||
2105 ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
2106 TagX->getTagKind() == TTK_Interface) &&
2107 (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
2108 TagY->getTagKind() == TTK_Interface));
2111 // Functions with the same type and linkage match.
2112 // FIXME: This needs to cope with function template specializations,
2113 // merging of prototyped/non-prototyped functions, etc.
2114 if (FunctionDecl *FuncX = dyn_cast<FunctionDecl>(X)) {
2115 FunctionDecl *FuncY = cast<FunctionDecl>(Y);
2116 return (FuncX->getLinkageInternal() == FuncY->getLinkageInternal()) &&
2117 FuncX->getASTContext().hasSameType(FuncX->getType(), FuncY->getType());
2120 // Variables with the same type and linkage match.
2121 if (VarDecl *VarX = dyn_cast<VarDecl>(X)) {
2122 VarDecl *VarY = cast<VarDecl>(Y);
2123 return (VarX->getLinkageInternal() == VarY->getLinkageInternal()) &&
2124 VarX->getASTContext().hasSameType(VarX->getType(), VarY->getType());
2127 // Namespaces with the same name and inlinedness match.
2128 if (NamespaceDecl *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
2129 NamespaceDecl *NamespaceY = cast<NamespaceDecl>(Y);
2130 return NamespaceX->isInline() == NamespaceY->isInline();
2133 // Identical template names and kinds match if their template parameter lists
2134 // and patterns match.
2135 if (TemplateDecl *TemplateX = dyn_cast<TemplateDecl>(X)) {
2136 TemplateDecl *TemplateY = cast<TemplateDecl>(Y);
2137 return isSameEntity(TemplateX->getTemplatedDecl(),
2138 TemplateY->getTemplatedDecl()) &&
2139 isSameTemplateParameterList(TemplateX->getTemplateParameters(),
2140 TemplateY->getTemplateParameters());
2143 // Fields with the same name and the same type match.
2144 if (FieldDecl *FDX = dyn_cast<FieldDecl>(X)) {
2145 FieldDecl *FDY = cast<FieldDecl>(Y);
2146 // FIXME: Diagnose if the types don't match. More generally, diagnose if we
2147 // get a declaration in a class definition that isn't in the canonical class
2149 // FIXME: Also check the bitwidth is odr-equivalent, if any.
2150 return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
2153 // Enumerators with the same name match.
2154 if (isa<EnumConstantDecl>(X))
2155 // FIXME: Also check the value is odr-equivalent.
2158 // Using shadow declarations with the same target match.
2159 if (UsingShadowDecl *USX = dyn_cast<UsingShadowDecl>(X)) {
2160 UsingShadowDecl *USY = cast<UsingShadowDecl>(Y);
2161 return USX->getTargetDecl() == USY->getTargetDecl();
2164 // FIXME: Many other cases to implement.
2168 /// Find the context in which we should search for previous declarations when
2169 /// looking for declarations to merge.
2170 static DeclContext *getPrimaryContextForMerging(DeclContext *DC) {
2171 if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(DC))
2172 return ND->getOriginalNamespace();
2174 if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(DC))
2175 return RD->getDefinition();
2177 if (EnumDecl *ED = dyn_cast<EnumDecl>(DC))
2178 return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition() : 0;
2183 ASTDeclReader::FindExistingResult::~FindExistingResult() {
2184 if (!AddResult || Existing)
2187 DeclContext *DC = New->getDeclContext()->getRedeclContext();
2188 if (DC->isTranslationUnit() && Reader.SemaObj) {
2189 Reader.SemaObj->IdResolver.tryAddTopLevelDecl(New, New->getDeclName());
2190 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(DC)) {
2191 // Add the declaration to its redeclaration context so later merging
2192 // lookups will find it.
2193 MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
2197 ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
2198 DeclarationName Name = D->getDeclName();
2200 // Don't bother trying to find unnamed declarations.
2201 FindExistingResult Result(Reader, D, /*Existing=*/0);
2206 // FIXME: Bail out for non-canonical declarations. We will have performed any
2207 // necessary merging already.
2209 DeclContext *DC = D->getDeclContext()->getRedeclContext();
2210 if (DC->isTranslationUnit() && Reader.SemaObj) {
2211 IdentifierResolver &IdResolver = Reader.SemaObj->IdResolver;
2213 // Temporarily consider the identifier to be up-to-date. We don't want to
2214 // cause additional lookups here.
2215 class UpToDateIdentifierRAII {
2220 explicit UpToDateIdentifierRAII(IdentifierInfo *II)
2221 : II(II), WasOutToDate(false)
2224 WasOutToDate = II->isOutOfDate();
2226 II->setOutOfDate(false);
2230 ~UpToDateIdentifierRAII() {
2232 II->setOutOfDate(true);
2234 } UpToDate(Name.getAsIdentifierInfo());
2236 for (IdentifierResolver::iterator I = IdResolver.begin(Name),
2237 IEnd = IdResolver.end();
2239 if (isSameEntity(*I, D))
2240 return FindExistingResult(Reader, D, *I);
2242 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(DC)) {
2243 DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
2244 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
2245 if (isSameEntity(*I, D))
2246 return FindExistingResult(Reader, D, *I);
2249 // Not in a mergeable context.
2250 return FindExistingResult(Reader);
2253 // If this declaration is from a merged context, make a note that we need to
2254 // check that the canonical definition of that context contains the decl.
2255 if (Reader.MergedDeclContexts.count(D->getLexicalDeclContext()))
2256 Reader.PendingOdrMergeChecks.push_back(D);
2258 return FindExistingResult(Reader, D, /*Existing=*/0);
2261 void ASTDeclReader::attachPreviousDecl(Decl *D, Decl *previous) {
2262 assert(D && previous);
2263 if (TagDecl *TD = dyn_cast<TagDecl>(D)) {
2264 TD->RedeclLink.setNext(cast<TagDecl>(previous));
2265 } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
2266 FD->RedeclLink.setNext(cast<FunctionDecl>(previous));
2267 } else if (VarDecl *VD = dyn_cast<VarDecl>(D)) {
2268 VD->RedeclLink.setNext(cast<VarDecl>(previous));
2269 } else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
2270 TD->RedeclLink.setNext(cast<TypedefNameDecl>(previous));
2271 } else if (UsingShadowDecl *USD = dyn_cast<UsingShadowDecl>(D)) {
2272 USD->RedeclLink.setNext(cast<UsingShadowDecl>(previous));
2273 } else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
2274 ID->RedeclLink.setNext(cast<ObjCInterfaceDecl>(previous));
2275 } else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
2276 PD->RedeclLink.setNext(cast<ObjCProtocolDecl>(previous));
2277 } else if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(D)) {
2278 ND->RedeclLink.setNext(cast<NamespaceDecl>(previous));
2280 RedeclarableTemplateDecl *TD = cast<RedeclarableTemplateDecl>(D);
2281 TD->RedeclLink.setNext(cast<RedeclarableTemplateDecl>(previous));
2284 // If the declaration was visible in one module, a redeclaration of it in
2285 // another module remains visible even if it wouldn't be visible by itself.
2287 // FIXME: In this case, the declaration should only be visible if a module
2288 // that makes it visible has been imported.
2289 D->IdentifierNamespace |=
2290 previous->IdentifierNamespace &
2291 (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
2294 void ASTDeclReader::attachLatestDecl(Decl *D, Decl *Latest) {
2295 assert(D && Latest);
2296 if (TagDecl *TD = dyn_cast<TagDecl>(D)) {
2298 = Redeclarable<TagDecl>::LatestDeclLink(cast<TagDecl>(Latest));
2299 } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
2301 = Redeclarable<FunctionDecl>::LatestDeclLink(cast<FunctionDecl>(Latest));
2302 } else if (VarDecl *VD = dyn_cast<VarDecl>(D)) {
2304 = Redeclarable<VarDecl>::LatestDeclLink(cast<VarDecl>(Latest));
2305 } else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
2307 = Redeclarable<TypedefNameDecl>::LatestDeclLink(
2308 cast<TypedefNameDecl>(Latest));
2309 } else if (UsingShadowDecl *USD = dyn_cast<UsingShadowDecl>(D)) {
2311 = Redeclarable<UsingShadowDecl>::LatestDeclLink(
2312 cast<UsingShadowDecl>(Latest));
2313 } else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
2315 = Redeclarable<ObjCInterfaceDecl>::LatestDeclLink(
2316 cast<ObjCInterfaceDecl>(Latest));
2317 } else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
2319 = Redeclarable<ObjCProtocolDecl>::LatestDeclLink(
2320 cast<ObjCProtocolDecl>(Latest));
2321 } else if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(D)) {
2323 = Redeclarable<NamespaceDecl>::LatestDeclLink(
2324 cast<NamespaceDecl>(Latest));
2326 RedeclarableTemplateDecl *TD = cast<RedeclarableTemplateDecl>(D);
2328 = Redeclarable<RedeclarableTemplateDecl>::LatestDeclLink(
2329 cast<RedeclarableTemplateDecl>(Latest));
2333 ASTReader::MergedDeclsMap::iterator
2334 ASTReader::combineStoredMergedDecls(Decl *Canon, GlobalDeclID CanonID) {
2335 // If we don't have any stored merged declarations, just look in the
2336 // merged declarations set.
2337 StoredMergedDeclsMap::iterator StoredPos = StoredMergedDecls.find(CanonID);
2338 if (StoredPos == StoredMergedDecls.end())
2339 return MergedDecls.find(Canon);
2341 // Append the stored merged declarations to the merged declarations set.
2342 MergedDeclsMap::iterator Pos = MergedDecls.find(Canon);
2343 if (Pos == MergedDecls.end())
2344 Pos = MergedDecls.insert(std::make_pair(Canon,
2345 SmallVector<DeclID, 2>())).first;
2346 Pos->second.append(StoredPos->second.begin(), StoredPos->second.end());
2347 StoredMergedDecls.erase(StoredPos);
2349 // Sort and uniquify the set of merged declarations.
2350 llvm::array_pod_sort(Pos->second.begin(), Pos->second.end());
2351 Pos->second.erase(std::unique(Pos->second.begin(), Pos->second.end()),
2356 /// \brief Read the declaration at the given offset from the AST file.
2357 Decl *ASTReader::ReadDeclRecord(DeclID ID) {
2358 unsigned Index = ID - NUM_PREDEF_DECL_IDS;
2359 unsigned RawLocation = 0;
2360 RecordLocation Loc = DeclCursorForID(ID, RawLocation);
2361 llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
2362 // Keep track of where we are in the stream, then jump back there
2363 // after reading this declaration.
2364 SavedStreamPosition SavedPosition(DeclsCursor);
2366 ReadingKindTracker ReadingKind(Read_Decl, *this);
2368 // Note that we are loading a declaration record.
2369 Deserializing ADecl(this);
2371 DeclsCursor.JumpToBit(Loc.Offset);
2373 unsigned Code = DeclsCursor.ReadCode();
2375 ASTDeclReader Reader(*this, *Loc.F, ID, RawLocation, Record,Idx);
2378 switch ((DeclCode)DeclsCursor.readRecord(Code, Record)) {
2379 case DECL_CONTEXT_LEXICAL:
2380 case DECL_CONTEXT_VISIBLE:
2381 llvm_unreachable("Record cannot be de-serialized with ReadDeclRecord");
2383 D = TypedefDecl::CreateDeserialized(Context, ID);
2385 case DECL_TYPEALIAS:
2386 D = TypeAliasDecl::CreateDeserialized(Context, ID);
2389 D = EnumDecl::CreateDeserialized(Context, ID);
2392 D = RecordDecl::CreateDeserialized(Context, ID);
2394 case DECL_ENUM_CONSTANT:
2395 D = EnumConstantDecl::CreateDeserialized(Context, ID);
2398 D = FunctionDecl::CreateDeserialized(Context, ID);
2400 case DECL_LINKAGE_SPEC:
2401 D = LinkageSpecDecl::CreateDeserialized(Context, ID);
2404 D = LabelDecl::CreateDeserialized(Context, ID);
2406 case DECL_NAMESPACE:
2407 D = NamespaceDecl::CreateDeserialized(Context, ID);
2409 case DECL_NAMESPACE_ALIAS:
2410 D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
2413 D = UsingDecl::CreateDeserialized(Context, ID);
2415 case DECL_USING_SHADOW:
2416 D = UsingShadowDecl::CreateDeserialized(Context, ID);
2418 case DECL_USING_DIRECTIVE:
2419 D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
2421 case DECL_UNRESOLVED_USING_VALUE:
2422 D = UnresolvedUsingValueDecl::CreateDeserialized(Context, ID);
2424 case DECL_UNRESOLVED_USING_TYPENAME:
2425 D = UnresolvedUsingTypenameDecl::CreateDeserialized(Context, ID);
2427 case DECL_CXX_RECORD:
2428 D = CXXRecordDecl::CreateDeserialized(Context, ID);
2430 case DECL_CXX_METHOD:
2431 D = CXXMethodDecl::CreateDeserialized(Context, ID);
2433 case DECL_CXX_CONSTRUCTOR:
2434 D = CXXConstructorDecl::CreateDeserialized(Context, ID);
2436 case DECL_CXX_DESTRUCTOR:
2437 D = CXXDestructorDecl::CreateDeserialized(Context, ID);
2439 case DECL_CXX_CONVERSION:
2440 D = CXXConversionDecl::CreateDeserialized(Context, ID);
2442 case DECL_ACCESS_SPEC:
2443 D = AccessSpecDecl::CreateDeserialized(Context, ID);
2446 D = FriendDecl::CreateDeserialized(Context, ID, Record[Idx++]);
2448 case DECL_FRIEND_TEMPLATE:
2449 D = FriendTemplateDecl::CreateDeserialized(Context, ID);
2451 case DECL_CLASS_TEMPLATE:
2452 D = ClassTemplateDecl::CreateDeserialized(Context, ID);
2454 case DECL_CLASS_TEMPLATE_SPECIALIZATION:
2455 D = ClassTemplateSpecializationDecl::CreateDeserialized(Context, ID);
2457 case DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION:
2458 D = ClassTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
2460 case DECL_VAR_TEMPLATE:
2461 D = VarTemplateDecl::CreateDeserialized(Context, ID);
2463 case DECL_VAR_TEMPLATE_SPECIALIZATION:
2464 D = VarTemplateSpecializationDecl::CreateDeserialized(Context, ID);
2466 case DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION:
2467 D = VarTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
2469 case DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION:
2470 D = ClassScopeFunctionSpecializationDecl::CreateDeserialized(Context, ID);
2472 case DECL_FUNCTION_TEMPLATE:
2473 D = FunctionTemplateDecl::CreateDeserialized(Context, ID);
2475 case DECL_TEMPLATE_TYPE_PARM:
2476 D = TemplateTypeParmDecl::CreateDeserialized(Context, ID);
2478 case DECL_NON_TYPE_TEMPLATE_PARM:
2479 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID);
2481 case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK:
2482 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID, Record[Idx++]);
2484 case DECL_TEMPLATE_TEMPLATE_PARM:
2485 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID);
2487 case DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK:
2488 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID,
2491 case DECL_TYPE_ALIAS_TEMPLATE:
2492 D = TypeAliasTemplateDecl::CreateDeserialized(Context, ID);
2494 case DECL_STATIC_ASSERT:
2495 D = StaticAssertDecl::CreateDeserialized(Context, ID);
2497 case DECL_OBJC_METHOD:
2498 D = ObjCMethodDecl::CreateDeserialized(Context, ID);
2500 case DECL_OBJC_INTERFACE:
2501 D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
2503 case DECL_OBJC_IVAR:
2504 D = ObjCIvarDecl::CreateDeserialized(Context, ID);
2506 case DECL_OBJC_PROTOCOL:
2507 D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
2509 case DECL_OBJC_AT_DEFS_FIELD:
2510 D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
2512 case DECL_OBJC_CATEGORY:
2513 D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
2515 case DECL_OBJC_CATEGORY_IMPL:
2516 D = ObjCCategoryImplDecl::CreateDeserialized(Context, ID);
2518 case DECL_OBJC_IMPLEMENTATION:
2519 D = ObjCImplementationDecl::CreateDeserialized(Context, ID);
2521 case DECL_OBJC_COMPATIBLE_ALIAS:
2522 D = ObjCCompatibleAliasDecl::CreateDeserialized(Context, ID);
2524 case DECL_OBJC_PROPERTY:
2525 D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
2527 case DECL_OBJC_PROPERTY_IMPL:
2528 D = ObjCPropertyImplDecl::CreateDeserialized(Context, ID);
2531 D = FieldDecl::CreateDeserialized(Context, ID);
2533 case DECL_INDIRECTFIELD:
2534 D = IndirectFieldDecl::CreateDeserialized(Context, ID);
2537 D = VarDecl::CreateDeserialized(Context, ID);
2539 case DECL_IMPLICIT_PARAM:
2540 D = ImplicitParamDecl::CreateDeserialized(Context, ID);
2543 D = ParmVarDecl::CreateDeserialized(Context, ID);
2545 case DECL_FILE_SCOPE_ASM:
2546 D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
2549 D = BlockDecl::CreateDeserialized(Context, ID);
2551 case DECL_MS_PROPERTY:
2552 D = MSPropertyDecl::CreateDeserialized(Context, ID);
2555 D = CapturedDecl::CreateDeserialized(Context, ID, Record[Idx++]);
2557 case DECL_CXX_BASE_SPECIFIERS:
2558 Error("attempt to read a C++ base-specifier record as a declaration");
2561 // Note: last entry of the ImportDecl record is the number of stored source
2563 D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
2565 case DECL_OMP_THREADPRIVATE:
2566 D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, Record[Idx++]);
2569 D = EmptyDecl::CreateDeserialized(Context, ID);
2573 assert(D && "Unknown declaration reading AST file");
2574 LoadedDecl(Index, D);
2575 // Set the DeclContext before doing any deserialization, to make sure internal
2576 // calls to Decl::getASTContext() by Decl's methods will find the
2577 // TranslationUnitDecl without crashing.
2578 D->setDeclContext(Context.getTranslationUnitDecl());
2581 // If this declaration is also a declaration context, get the
2582 // offsets for its tables of lexical and visible declarations.
2583 if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
2584 // FIXME: This should really be
2585 // DeclContext *LookupDC = DC->getPrimaryContext();
2586 // but that can walk the redeclaration chain, which might not work yet.
2587 DeclContext *LookupDC = DC;
2588 if (isa<NamespaceDecl>(DC))
2589 LookupDC = DC->getPrimaryContext();
2590 std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
2591 if (Offsets.first || Offsets.second) {
2592 if (Offsets.first != 0)
2593 DC->setHasExternalLexicalStorage(true);
2594 if (Offsets.second != 0)
2595 LookupDC->setHasExternalVisibleStorage(true);
2596 if (ReadDeclContextStorage(*Loc.F, DeclsCursor, Offsets,
2597 Loc.F->DeclContextInfos[DC]))
2601 // Now add the pending visible updates for this decl context, if it has any.
2602 DeclContextVisibleUpdatesPending::iterator I =
2603 PendingVisibleUpdates.find(ID);
2604 if (I != PendingVisibleUpdates.end()) {
2605 // There are updates. This means the context has external visible
2606 // storage, even if the original stored version didn't.
2607 LookupDC->setHasExternalVisibleStorage(true);
2608 DeclContextVisibleUpdates &U = I->second;
2609 for (DeclContextVisibleUpdates::iterator UI = U.begin(), UE = U.end();
2611 DeclContextInfo &Info = UI->second->DeclContextInfos[DC];
2612 delete Info.NameLookupTableData;
2613 Info.NameLookupTableData = UI->first;
2615 PendingVisibleUpdates.erase(I);
2618 assert(Idx == Record.size());
2620 // Load any relevant update records.
2621 loadDeclUpdateRecords(ID, D);
2623 // Load the categories after recursive loading is finished.
2624 if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D))
2625 if (Class->isThisDeclarationADefinition())
2626 loadObjCCategories(ID, Class);
2628 // If we have deserialized a declaration that has a definition the
2629 // AST consumer might need to know about, queue it.
2630 // We don't pass it to the consumer immediately because we may be in recursive
2631 // loading, and some declarations may still be initializing.
2632 if (isConsumerInterestedIn(D, Reader.hasPendingBody()))
2633 InterestingDecls.push_back(D);
2638 void ASTReader::loadDeclUpdateRecords(serialization::DeclID ID, Decl *D) {
2639 // The declaration may have been modified by files later in the chain.
2640 // If this is the case, read the record containing the updates from each file
2641 // and pass it to ASTDeclReader to make the modifications.
2642 DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
2643 if (UpdI != DeclUpdateOffsets.end()) {
2644 FileOffsetsTy &UpdateOffsets = UpdI->second;
2645 for (FileOffsetsTy::iterator
2646 I = UpdateOffsets.begin(), E = UpdateOffsets.end(); I != E; ++I) {
2647 ModuleFile *F = I->first;
2648 uint64_t Offset = I->second;
2649 llvm::BitstreamCursor &Cursor = F->DeclsCursor;
2650 SavedStreamPosition SavedPosition(Cursor);
2651 Cursor.JumpToBit(Offset);
2653 unsigned Code = Cursor.ReadCode();
2654 unsigned RecCode = Cursor.readRecord(Code, Record);
2656 assert(RecCode == DECL_UPDATES && "Expected DECL_UPDATES record!");
2659 ASTDeclReader Reader(*this, *F, ID, 0, Record, Idx);
2660 Reader.UpdateDecl(D, *F, Record);
2666 struct CompareLocalRedeclarationsInfoToID {
2667 bool operator()(const LocalRedeclarationsInfo &X, DeclID Y) {
2668 return X.FirstID < Y;
2671 bool operator()(DeclID X, const LocalRedeclarationsInfo &Y) {
2672 return X < Y.FirstID;
2675 bool operator()(const LocalRedeclarationsInfo &X,
2676 const LocalRedeclarationsInfo &Y) {
2677 return X.FirstID < Y.FirstID;
2679 bool operator()(DeclID X, DeclID Y) {
2684 /// \brief Module visitor class that finds all of the redeclarations of a
2686 class RedeclChainVisitor {
2688 SmallVectorImpl<DeclID> &SearchDecls;
2689 llvm::SmallPtrSet<Decl *, 16> &Deserialized;
2690 GlobalDeclID CanonID;
2691 SmallVector<Decl *, 4> Chain;
2694 RedeclChainVisitor(ASTReader &Reader, SmallVectorImpl<DeclID> &SearchDecls,
2695 llvm::SmallPtrSet<Decl *, 16> &Deserialized,
2696 GlobalDeclID CanonID)
2697 : Reader(Reader), SearchDecls(SearchDecls), Deserialized(Deserialized),
2699 for (unsigned I = 0, N = SearchDecls.size(); I != N; ++I)
2700 addToChain(Reader.GetDecl(SearchDecls[I]));
2703 static bool visit(ModuleFile &M, bool Preorder, void *UserData) {
2707 return static_cast<RedeclChainVisitor *>(UserData)->visit(M);
2710 void addToChain(Decl *D) {
2714 if (Deserialized.erase(D))
2718 void searchForID(ModuleFile &M, GlobalDeclID GlobalID) {
2719 // Map global ID of the first declaration down to the local ID
2720 // used in this module file.
2721 DeclID ID = Reader.mapGlobalIDToModuleFileGlobalID(M, GlobalID);
2725 // Perform a binary search to find the local redeclarations for this
2726 // declaration (if any).
2727 const LocalRedeclarationsInfo *Result
2728 = std::lower_bound(M.RedeclarationsMap,
2729 M.RedeclarationsMap + M.LocalNumRedeclarationsInMap,
2730 ID, CompareLocalRedeclarationsInfoToID());
2731 if (Result == M.RedeclarationsMap + M.LocalNumRedeclarationsInMap ||
2732 Result->FirstID != ID) {
2733 // If we have a previously-canonical singleton declaration that was
2734 // merged into another redeclaration chain, create a trivial chain
2735 // for this single declaration so that it will get wired into the
2736 // complete redeclaration chain.
2737 if (GlobalID != CanonID &&
2738 GlobalID - NUM_PREDEF_DECL_IDS >= M.BaseDeclID &&
2739 GlobalID - NUM_PREDEF_DECL_IDS < M.BaseDeclID + M.LocalNumDecls) {
2740 addToChain(Reader.GetDecl(GlobalID));
2746 // Dig out all of the redeclarations.
2747 unsigned Offset = Result->Offset;
2748 unsigned N = M.RedeclarationChains[Offset];
2749 M.RedeclarationChains[Offset++] = 0; // Don't try to deserialize again
2750 for (unsigned I = 0; I != N; ++I)
2751 addToChain(Reader.GetLocalDecl(M, M.RedeclarationChains[Offset++]));
2754 bool visit(ModuleFile &M) {
2755 // Visit each of the declarations.
2756 for (unsigned I = 0, N = SearchDecls.size(); I != N; ++I)
2757 searchForID(M, SearchDecls[I]);
2761 ArrayRef<Decl *> getChain() const {
2767 void ASTReader::loadPendingDeclChain(serialization::GlobalDeclID ID) {
2768 Decl *D = GetDecl(ID);
2769 Decl *CanonDecl = D->getCanonicalDecl();
2771 // Determine the set of declaration IDs we'll be searching for.
2772 SmallVector<DeclID, 1> SearchDecls;
2773 GlobalDeclID CanonID = 0;
2774 if (D == CanonDecl) {
2775 SearchDecls.push_back(ID); // Always first.
2778 MergedDeclsMap::iterator MergedPos = combineStoredMergedDecls(CanonDecl, ID);
2779 if (MergedPos != MergedDecls.end())
2780 SearchDecls.append(MergedPos->second.begin(), MergedPos->second.end());
2782 // Build up the list of redeclarations.
2783 RedeclChainVisitor Visitor(*this, SearchDecls, RedeclsDeserialized, CanonID);
2784 ModuleMgr.visitDepthFirst(&RedeclChainVisitor::visit, &Visitor);
2786 // Retrieve the chains.
2787 ArrayRef<Decl *> Chain = Visitor.getChain();
2791 // Hook up the chains.
2792 Decl *MostRecent = CanonDecl->getMostRecentDecl();
2793 for (unsigned I = 0, N = Chain.size(); I != N; ++I) {
2794 if (Chain[I] == CanonDecl)
2797 ASTDeclReader::attachPreviousDecl(Chain[I], MostRecent);
2798 MostRecent = Chain[I];
2801 ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
2805 struct CompareObjCCategoriesInfo {
2806 bool operator()(const ObjCCategoriesInfo &X, DeclID Y) {
2807 return X.DefinitionID < Y;
2810 bool operator()(DeclID X, const ObjCCategoriesInfo &Y) {
2811 return X < Y.DefinitionID;
2814 bool operator()(const ObjCCategoriesInfo &X,
2815 const ObjCCategoriesInfo &Y) {
2816 return X.DefinitionID < Y.DefinitionID;
2818 bool operator()(DeclID X, DeclID Y) {
2823 /// \brief Given an ObjC interface, goes through the modules and links to the
2824 /// interface all the categories for it.
2825 class ObjCCategoriesVisitor {
2827 serialization::GlobalDeclID InterfaceID;
2828 ObjCInterfaceDecl *Interface;
2829 llvm::SmallPtrSet<ObjCCategoryDecl *, 16> &Deserialized;
2830 unsigned PreviousGeneration;
2831 ObjCCategoryDecl *Tail;
2832 llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
2834 void add(ObjCCategoryDecl *Cat) {
2835 // Only process each category once.
2836 if (!Deserialized.erase(Cat))
2839 // Check for duplicate categories.
2840 if (Cat->getDeclName()) {
2841 ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
2843 Reader.getOwningModuleFile(Existing)
2844 != Reader.getOwningModuleFile(Cat)) {
2845 // FIXME: We should not warn for duplicates in diamond:
2853 // If there are duplicates in ML/MR, there will be warning when
2854 // creating MB *and* when importing MB. We should not warn when
2856 Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
2857 << Interface->getDeclName() << Cat->getDeclName();
2858 Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
2859 } else if (!Existing) {
2860 // Record this category.
2865 // Add this category to the end of the chain.
2867 ASTDeclReader::setNextObjCCategory(Tail, Cat);
2869 Interface->setCategoryListRaw(Cat);
2874 ObjCCategoriesVisitor(ASTReader &Reader,
2875 serialization::GlobalDeclID InterfaceID,
2876 ObjCInterfaceDecl *Interface,
2877 llvm::SmallPtrSet<ObjCCategoryDecl *, 16> &Deserialized,
2878 unsigned PreviousGeneration)
2879 : Reader(Reader), InterfaceID(InterfaceID), Interface(Interface),
2880 Deserialized(Deserialized), PreviousGeneration(PreviousGeneration),
2883 // Populate the name -> category map with the set of known categories.
2884 for (ObjCInterfaceDecl::known_categories_iterator
2885 Cat = Interface->known_categories_begin(),
2886 CatEnd = Interface->known_categories_end();
2887 Cat != CatEnd; ++Cat) {
2888 if (Cat->getDeclName())
2889 NameCategoryMap[Cat->getDeclName()] = *Cat;
2891 // Keep track of the tail of the category list.
2896 static bool visit(ModuleFile &M, void *UserData) {
2897 return static_cast<ObjCCategoriesVisitor *>(UserData)->visit(M);
2900 bool visit(ModuleFile &M) {
2901 // If we've loaded all of the category information we care about from
2902 // this module file, we're done.
2903 if (M.Generation <= PreviousGeneration)
2906 // Map global ID of the definition down to the local ID used in this
2907 // module file. If there is no such mapping, we'll find nothing here
2908 // (or in any module it imports).
2909 DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
2913 // Perform a binary search to find the local redeclarations for this
2914 // declaration (if any).
2915 const ObjCCategoriesInfo *Result
2916 = std::lower_bound(M.ObjCCategoriesMap,
2917 M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap,
2918 LocalID, CompareObjCCategoriesInfo());
2919 if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
2920 Result->DefinitionID != LocalID) {
2921 // We didn't find anything. If the class definition is in this module
2922 // file, then the module files it depends on cannot have any categories,
2923 // so suppress further lookup.
2924 return Reader.isDeclIDFromModule(InterfaceID, M);
2927 // We found something. Dig out all of the categories.
2928 unsigned Offset = Result->Offset;
2929 unsigned N = M.ObjCCategories[Offset];
2930 M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
2931 for (unsigned I = 0; I != N; ++I)
2932 add(cast_or_null<ObjCCategoryDecl>(
2933 Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
2939 void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
2940 ObjCInterfaceDecl *D,
2941 unsigned PreviousGeneration) {
2942 ObjCCategoriesVisitor Visitor(*this, ID, D, CategoriesDeserialized,
2943 PreviousGeneration);
2944 ModuleMgr.visit(ObjCCategoriesVisitor::visit, &Visitor);
2947 void ASTDeclReader::UpdateDecl(Decl *D, ModuleFile &ModuleFile,
2948 const RecordData &Record) {
2950 while (Idx < Record.size()) {
2951 switch ((DeclUpdateKind)Record[Idx++]) {
2952 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
2953 cast<CXXRecordDecl>(D)->addedMember(Reader.ReadDecl(ModuleFile, Record, Idx));
2956 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
2957 // It will be added to the template's specializations set when loaded.
2958 (void)Reader.ReadDecl(ModuleFile, Record, Idx);
2961 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: {
2963 = Reader.ReadDeclAs<NamespaceDecl>(ModuleFile, Record, Idx);
2965 // Each module has its own anonymous namespace, which is disjoint from
2966 // any other module's anonymous namespaces, so don't attach the anonymous
2967 // namespace at all.
2968 if (ModuleFile.Kind != MK_Module) {
2969 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(D))
2970 TU->setAnonymousNamespace(Anon);
2972 cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
2977 case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER:
2978 cast<VarDecl>(D)->getMemberSpecializationInfo()->setPointOfInstantiation(
2979 Reader.ReadSourceLocation(ModuleFile, Record, Idx));
2982 case UPD_CXX_DEDUCED_RETURN_TYPE: {
2983 FunctionDecl *FD = cast<FunctionDecl>(D);
2984 Reader.Context.adjustDeducedFunctionResultType(
2985 FD, Reader.readType(ModuleFile, Record, Idx));
2989 case UPD_DECL_MARKED_USED: {
2990 // FIXME: This doesn't send the right notifications if there are
2991 // ASTMutationListeners other than an ASTWriter.