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Diffstat (limited to 'contrib/llvm/tools/clang/lib/Serialization/ASTReaderDecl.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Serialization/ASTReaderDecl.cpp | 1957 |
1 files changed, 1957 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Serialization/ASTReaderDecl.cpp b/contrib/llvm/tools/clang/lib/Serialization/ASTReaderDecl.cpp new file mode 100644 index 0000000..6cc3f0a --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Serialization/ASTReaderDecl.cpp @@ -0,0 +1,1957 @@ +//===--- ASTReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements the ASTReader::ReadDeclRecord method, which is the +// entrypoint for loading a decl. +// +//===----------------------------------------------------------------------===// + +#include "ASTCommon.h" +#include "clang/Serialization/ASTReader.h" +#include "clang/Sema/SemaDiagnostic.h" +#include "clang/AST/ASTConsumer.h" +#include "clang/AST/ASTContext.h" +#include "clang/AST/DeclVisitor.h" +#include "clang/AST/DeclGroup.h" +#include "clang/AST/DeclCXX.h" +#include "clang/AST/DeclTemplate.h" +#include "clang/AST/Expr.h" +using namespace clang; +using namespace clang::serialization; + +//===----------------------------------------------------------------------===// +// Declaration deserialization +//===----------------------------------------------------------------------===// + +namespace clang { + class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> { + ASTReader &Reader; + Module &F; + llvm::BitstreamCursor &Cursor; + const DeclID ThisDeclID; + typedef ASTReader::RecordData RecordData; + const RecordData &Record; + unsigned &Idx; + TypeID TypeIDForTypeDecl; + + DeclID DeclContextIDForTemplateParmDecl; + DeclID LexicalDeclContextIDForTemplateParmDecl; + + uint64_t GetCurrentCursorOffset(); + + SourceLocation ReadSourceLocation(const RecordData &R, unsigned &I) { + return Reader.ReadSourceLocation(F, R, I); + } + + SourceRange ReadSourceRange(const RecordData &R, unsigned &I) { + return Reader.ReadSourceRange(F, R, I); + } + + TypeSourceInfo *GetTypeSourceInfo(const RecordData &R, unsigned &I) { + return Reader.GetTypeSourceInfo(F, R, I); + } + + serialization::DeclID ReadDeclID(const RecordData &R, unsigned &I) { + return Reader.ReadDeclID(F, R, I); + } + + Decl *ReadDecl(const RecordData &R, unsigned &I) { + return Reader.ReadDecl(F, R, I); + } + + template<typename T> + T *ReadDeclAs(const RecordData &R, unsigned &I) { + return Reader.ReadDeclAs<T>(F, R, I); + } + + void ReadQualifierInfo(QualifierInfo &Info, + const RecordData &R, unsigned &I) { + Reader.ReadQualifierInfo(F, Info, R, I); + } + + void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name, + const RecordData &R, unsigned &I) { + Reader.ReadDeclarationNameLoc(F, DNLoc, Name, R, I); + } + + void ReadDeclarationNameInfo(DeclarationNameInfo &NameInfo, + const RecordData &R, unsigned &I) { + Reader.ReadDeclarationNameInfo(F, NameInfo, R, I); + } + + void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data, + const RecordData &R, unsigned &I); + + void InitializeCXXDefinitionData(CXXRecordDecl *D, + CXXRecordDecl *DefinitionDecl, + const RecordData &Record, unsigned &Idx); + public: + ASTDeclReader(ASTReader &Reader, Module &F, + llvm::BitstreamCursor &Cursor, DeclID thisDeclID, + const RecordData &Record, unsigned &Idx) + : Reader(Reader), F(F), Cursor(Cursor), ThisDeclID(thisDeclID), + Record(Record), Idx(Idx), TypeIDForTypeDecl(0) { } + + static void attachPreviousDecl(Decl *D, Decl *previous); + + void Visit(Decl *D); + + void UpdateDecl(Decl *D, Module &Module, + const RecordData &Record); + + static void setNextObjCCategory(ObjCCategoryDecl *Cat, + ObjCCategoryDecl *Next) { + Cat->NextClassCategory = Next; + } + + void VisitDecl(Decl *D); + void VisitTranslationUnitDecl(TranslationUnitDecl *TU); + void VisitNamedDecl(NamedDecl *ND); + void VisitLabelDecl(LabelDecl *LD); + void VisitNamespaceDecl(NamespaceDecl *D); + void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); + void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); + void VisitTypeDecl(TypeDecl *TD); + void VisitTypedefDecl(TypedefDecl *TD); + void VisitTypeAliasDecl(TypeAliasDecl *TD); + void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); + void VisitTagDecl(TagDecl *TD); + void VisitEnumDecl(EnumDecl *ED); + void VisitRecordDecl(RecordDecl *RD); + void VisitCXXRecordDecl(CXXRecordDecl *D); + void VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D); + void VisitClassTemplatePartialSpecializationDecl( + ClassTemplatePartialSpecializationDecl *D); + void VisitClassScopeFunctionSpecializationDecl( + ClassScopeFunctionSpecializationDecl *D); + void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); + void VisitValueDecl(ValueDecl *VD); + void VisitEnumConstantDecl(EnumConstantDecl *ECD); + void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); + void VisitDeclaratorDecl(DeclaratorDecl *DD); + void VisitFunctionDecl(FunctionDecl *FD); + void VisitCXXMethodDecl(CXXMethodDecl *D); + void VisitCXXConstructorDecl(CXXConstructorDecl *D); + void VisitCXXDestructorDecl(CXXDestructorDecl *D); + void VisitCXXConversionDecl(CXXConversionDecl *D); + void VisitFieldDecl(FieldDecl *FD); + void VisitIndirectFieldDecl(IndirectFieldDecl *FD); + void VisitVarDecl(VarDecl *VD); + void VisitImplicitParamDecl(ImplicitParamDecl *PD); + void VisitParmVarDecl(ParmVarDecl *PD); + void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); + void VisitTemplateDecl(TemplateDecl *D); + void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); + void VisitClassTemplateDecl(ClassTemplateDecl *D); + void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); + void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); + void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); + void VisitUsingDecl(UsingDecl *D); + void VisitUsingShadowDecl(UsingShadowDecl *D); + void VisitLinkageSpecDecl(LinkageSpecDecl *D); + void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD); + void VisitAccessSpecDecl(AccessSpecDecl *D); + void VisitFriendDecl(FriendDecl *D); + void VisitFriendTemplateDecl(FriendTemplateDecl *D); + void VisitStaticAssertDecl(StaticAssertDecl *D); + void VisitBlockDecl(BlockDecl *BD); + + std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC); + template <typename T> void VisitRedeclarable(Redeclarable<T> *D); + + // FIXME: Reorder according to DeclNodes.td? + void VisitObjCMethodDecl(ObjCMethodDecl *D); + void VisitObjCContainerDecl(ObjCContainerDecl *D); + void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); + void VisitObjCIvarDecl(ObjCIvarDecl *D); + void VisitObjCProtocolDecl(ObjCProtocolDecl *D); + void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); + void VisitObjCClassDecl(ObjCClassDecl *D); + void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); + void VisitObjCCategoryDecl(ObjCCategoryDecl *D); + void VisitObjCImplDecl(ObjCImplDecl *D); + void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); + void VisitObjCImplementationDecl(ObjCImplementationDecl *D); + void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); + void VisitObjCPropertyDecl(ObjCPropertyDecl *D); + void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); + }; +} + +uint64_t ASTDeclReader::GetCurrentCursorOffset() { + return F.DeclsCursor.GetCurrentBitNo() + F.GlobalBitOffset; +} + +void ASTDeclReader::Visit(Decl *D) { + DeclVisitor<ASTDeclReader, void>::Visit(D); + + if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { + if (DD->DeclInfo) { + DeclaratorDecl::ExtInfo *Info = + DD->DeclInfo.get<DeclaratorDecl::ExtInfo *>(); + Info->TInfo = + GetTypeSourceInfo(Record, Idx); + } + else { + DD->DeclInfo = GetTypeSourceInfo(Record, Idx); + } + } + + if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) { + // if we have a fully initialized TypeDecl, we can safely read its type now. + TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull()); + } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { + // FunctionDecl's body was written last after all other Stmts/Exprs. + if (Record[Idx++]) + FD->setLazyBody(GetCurrentCursorOffset()); + } else if (D->isTemplateParameter()) { + // If we have a fully initialized template parameter, we can now + // set its DeclContext. + D->setDeclContext( + cast_or_null<DeclContext>( + Reader.GetDecl(DeclContextIDForTemplateParmDecl))); + D->setLexicalDeclContext( + cast_or_null<DeclContext>( + Reader.GetDecl(LexicalDeclContextIDForTemplateParmDecl))); + } +} + +void ASTDeclReader::VisitDecl(Decl *D) { + if (D->isTemplateParameter()) { + // We don't want to deserialize the DeclContext of a template + // parameter immediately, because the template parameter might be + // used in the formulation of its DeclContext. Use the translation + // unit DeclContext as a placeholder. + DeclContextIDForTemplateParmDecl = ReadDeclID(Record, Idx); + LexicalDeclContextIDForTemplateParmDecl = ReadDeclID(Record, Idx); + D->setDeclContext(Reader.getContext().getTranslationUnitDecl()); + } else { + D->setDeclContext(ReadDeclAs<DeclContext>(Record, Idx)); + D->setLexicalDeclContext(ReadDeclAs<DeclContext>(Record, Idx)); + } + D->setLocation(ReadSourceLocation(Record, Idx)); + D->setInvalidDecl(Record[Idx++]); + if (Record[Idx++]) { // hasAttrs + AttrVec Attrs; + Reader.ReadAttributes(F, Attrs, Record, Idx); + D->setAttrs(Attrs); + } + D->setImplicit(Record[Idx++]); + D->setUsed(Record[Idx++]); + D->setReferenced(Record[Idx++]); + D->setAccess((AccessSpecifier)Record[Idx++]); + D->FromASTFile = true; + D->ModulePrivate = Record[Idx++]; +} + +void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) { + llvm_unreachable("Translation units are not serialized"); +} + +void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) { + VisitDecl(ND); + ND->setDeclName(Reader.ReadDeclarationName(F, Record, Idx)); +} + +void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) { + VisitNamedDecl(TD); + TD->setLocStart(ReadSourceLocation(Record, Idx)); + // Delay type reading until after we have fully initialized the decl. + TypeIDForTypeDecl = Reader.getGlobalTypeID(F, Record[Idx++]); +} + +void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) { + VisitTypeDecl(TD); + TD->setTypeSourceInfo(GetTypeSourceInfo(Record, Idx)); +} + +void ASTDeclReader::VisitTypeAliasDecl(TypeAliasDecl *TD) { + VisitTypeDecl(TD); + TD->setTypeSourceInfo(GetTypeSourceInfo(Record, Idx)); +} + +void ASTDeclReader::VisitTagDecl(TagDecl *TD) { + VisitTypeDecl(TD); + VisitRedeclarable(TD); + TD->IdentifierNamespace = Record[Idx++]; + TD->setTagKind((TagDecl::TagKind)Record[Idx++]); + TD->setCompleteDefinition(Record[Idx++]); + TD->setEmbeddedInDeclarator(Record[Idx++]); + TD->setFreeStanding(Record[Idx++]); + TD->setRBraceLoc(ReadSourceLocation(Record, Idx)); + if (Record[Idx++]) { // hasExtInfo + TagDecl::ExtInfo *Info = new (Reader.getContext()) TagDecl::ExtInfo(); + ReadQualifierInfo(*Info, Record, Idx); + TD->TypedefNameDeclOrQualifier = Info; + } else + TD->setTypedefNameForAnonDecl(ReadDeclAs<TypedefNameDecl>(Record, Idx)); +} + +void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) { + VisitTagDecl(ED); + if (TypeSourceInfo *TI = Reader.GetTypeSourceInfo(F, Record, Idx)) + ED->setIntegerTypeSourceInfo(TI); + else + ED->setIntegerType(Reader.readType(F, Record, Idx)); + ED->setPromotionType(Reader.readType(F, Record, Idx)); + ED->setNumPositiveBits(Record[Idx++]); + ED->setNumNegativeBits(Record[Idx++]); + ED->IsScoped = Record[Idx++]; + ED->IsScopedUsingClassTag = Record[Idx++]; + ED->IsFixed = Record[Idx++]; + ED->setInstantiationOfMemberEnum(ReadDeclAs<EnumDecl>(Record, Idx)); +} + +void ASTDeclReader::VisitRecordDecl(RecordDecl *RD) { + VisitTagDecl(RD); + RD->setHasFlexibleArrayMember(Record[Idx++]); + RD->setAnonymousStructOrUnion(Record[Idx++]); + RD->setHasObjectMember(Record[Idx++]); +} + +void ASTDeclReader::VisitValueDecl(ValueDecl *VD) { + VisitNamedDecl(VD); + VD->setType(Reader.readType(F, Record, Idx)); +} + +void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) { + VisitValueDecl(ECD); + if (Record[Idx++]) + ECD->setInitExpr(Reader.ReadExpr(F)); + ECD->setInitVal(Reader.ReadAPSInt(Record, Idx)); +} + +void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) { + VisitValueDecl(DD); + DD->setInnerLocStart(ReadSourceLocation(Record, Idx)); + if (Record[Idx++]) { // hasExtInfo + DeclaratorDecl::ExtInfo *Info + = new (Reader.getContext()) DeclaratorDecl::ExtInfo(); + ReadQualifierInfo(*Info, Record, Idx); + DD->DeclInfo = Info; + } +} + +void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) { + VisitDeclaratorDecl(FD); + VisitRedeclarable(FD); + + ReadDeclarationNameLoc(FD->DNLoc, FD->getDeclName(), Record, Idx); + FD->IdentifierNamespace = Record[Idx++]; + switch ((FunctionDecl::TemplatedKind)Record[Idx++]) { + default: llvm_unreachable("Unhandled TemplatedKind!"); + case FunctionDecl::TK_NonTemplate: + break; + case FunctionDecl::TK_FunctionTemplate: + FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>(Record, + Idx)); + break; + case FunctionDecl::TK_MemberSpecialization: { + FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>(Record, Idx); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + SourceLocation POI = ReadSourceLocation(Record, Idx); + FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK); + FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI); + break; + } + case FunctionDecl::TK_FunctionTemplateSpecialization: { + FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>(Record, + Idx); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + + // Template arguments. + SmallVector<TemplateArgument, 8> TemplArgs; + Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx); + + // Template args as written. + SmallVector<TemplateArgumentLoc, 8> TemplArgLocs; + SourceLocation LAngleLoc, RAngleLoc; + bool HasTemplateArgumentsAsWritten = Record[Idx++]; + if (HasTemplateArgumentsAsWritten) { + unsigned NumTemplateArgLocs = Record[Idx++]; + TemplArgLocs.reserve(NumTemplateArgLocs); + for (unsigned i=0; i != NumTemplateArgLocs; ++i) + TemplArgLocs.push_back( + Reader.ReadTemplateArgumentLoc(F, Record, Idx)); + + LAngleLoc = ReadSourceLocation(Record, Idx); + RAngleLoc = ReadSourceLocation(Record, Idx); + } + + SourceLocation POI = ReadSourceLocation(Record, Idx); + + ASTContext &C = Reader.getContext(); + TemplateArgumentList *TemplArgList + = TemplateArgumentList::CreateCopy(C, TemplArgs.data(), TemplArgs.size()); + TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc); + for (unsigned i=0, e = TemplArgLocs.size(); i != e; ++i) + TemplArgsInfo.addArgument(TemplArgLocs[i]); + FunctionTemplateSpecializationInfo *FTInfo + = FunctionTemplateSpecializationInfo::Create(C, FD, Template, TSK, + TemplArgList, + HasTemplateArgumentsAsWritten ? &TemplArgsInfo : 0, + POI); + FD->TemplateOrSpecialization = FTInfo; + + if (FD->isCanonicalDecl()) { // if canonical add to template's set. + // The template that contains the specializations set. It's not safe to + // use getCanonicalDecl on Template since it may still be initializing. + FunctionTemplateDecl *CanonTemplate + = ReadDeclAs<FunctionTemplateDecl>(Record, Idx); + // Get the InsertPos by FindNodeOrInsertPos() instead of calling + // InsertNode(FTInfo) directly to avoid the getASTContext() call in + // FunctionTemplateSpecializationInfo's Profile(). + // We avoid getASTContext because a decl in the parent hierarchy may + // be initializing. + llvm::FoldingSetNodeID ID; + FunctionTemplateSpecializationInfo::Profile(ID, TemplArgs.data(), + TemplArgs.size(), C); + void *InsertPos = 0; + CanonTemplate->getSpecializations().FindNodeOrInsertPos(ID, InsertPos); + assert(InsertPos && "Another specialization already inserted!"); + CanonTemplate->getSpecializations().InsertNode(FTInfo, InsertPos); + } + break; + } + case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { + // Templates. + UnresolvedSet<8> TemplDecls; + unsigned NumTemplates = Record[Idx++]; + while (NumTemplates--) + TemplDecls.addDecl(ReadDeclAs<NamedDecl>(Record, Idx)); + + // Templates args. + TemplateArgumentListInfo TemplArgs; + unsigned NumArgs = Record[Idx++]; + while (NumArgs--) + TemplArgs.addArgument(Reader.ReadTemplateArgumentLoc(F, Record, Idx)); + TemplArgs.setLAngleLoc(ReadSourceLocation(Record, Idx)); + TemplArgs.setRAngleLoc(ReadSourceLocation(Record, Idx)); + + FD->setDependentTemplateSpecialization(Reader.getContext(), + TemplDecls, TemplArgs); + break; + } + } + + // FunctionDecl's body is handled last at ASTDeclReader::Visit, + // after everything else is read. + + FD->SClass = (StorageClass)Record[Idx++]; + FD->SClassAsWritten = (StorageClass)Record[Idx++]; + FD->IsInline = Record[Idx++]; + FD->IsInlineSpecified = Record[Idx++]; + FD->IsVirtualAsWritten = Record[Idx++]; + FD->IsPure = Record[Idx++]; + FD->HasInheritedPrototype = Record[Idx++]; + FD->HasWrittenPrototype = Record[Idx++]; + FD->IsDeleted = Record[Idx++]; + FD->IsTrivial = Record[Idx++]; + FD->IsDefaulted = Record[Idx++]; + FD->IsExplicitlyDefaulted = Record[Idx++]; + FD->HasImplicitReturnZero = Record[Idx++]; + FD->IsConstexpr = Record[Idx++]; + FD->EndRangeLoc = ReadSourceLocation(Record, Idx); + + // Read in the parameters. + unsigned NumParams = Record[Idx++]; + SmallVector<ParmVarDecl *, 16> Params; + Params.reserve(NumParams); + for (unsigned I = 0; I != NumParams; ++I) + Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx)); + FD->setParams(Reader.getContext(), Params); +} + +void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) { + VisitNamedDecl(MD); + if (Record[Idx++]) { + // In practice, this won't be executed (since method definitions + // don't occur in header files). + MD->setBody(Reader.ReadStmt(F)); + MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx)); + MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx)); + } + MD->setInstanceMethod(Record[Idx++]); + MD->setVariadic(Record[Idx++]); + MD->setSynthesized(Record[Idx++]); + MD->setDefined(Record[Idx++]); + + MD->IsRedeclaration = Record[Idx++]; + MD->HasRedeclaration = Record[Idx++]; + if (MD->HasRedeclaration) + Reader.getContext().setObjCMethodRedeclaration(MD, + ReadDeclAs<ObjCMethodDecl>(Record, Idx)); + + MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]); + MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]); + MD->SetRelatedResultType(Record[Idx++]); + MD->setResultType(Reader.readType(F, Record, Idx)); + MD->setResultTypeSourceInfo(GetTypeSourceInfo(Record, Idx)); + MD->setEndLoc(ReadSourceLocation(Record, Idx)); + unsigned NumParams = Record[Idx++]; + SmallVector<ParmVarDecl *, 16> Params; + Params.reserve(NumParams); + for (unsigned I = 0; I != NumParams; ++I) + Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx)); + + MD->SelLocsKind = Record[Idx++]; + unsigned NumStoredSelLocs = Record[Idx++]; + SmallVector<SourceLocation, 16> SelLocs; + SelLocs.reserve(NumStoredSelLocs); + for (unsigned i = 0; i != NumStoredSelLocs; ++i) + SelLocs.push_back(ReadSourceLocation(Record, Idx)); + + MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs); +} + +void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) { + VisitNamedDecl(CD); + CD->setAtStartLoc(ReadSourceLocation(Record, Idx)); + CD->setAtEndRange(ReadSourceRange(Record, Idx)); +} + +void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) { + VisitObjCContainerDecl(ID); + ID->setTypeForDecl(Reader.readType(F, Record, Idx).getTypePtrOrNull()); + ID->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx)); + + // Read the directly referenced protocols and their SourceLocations. + unsigned NumProtocols = Record[Idx++]; + SmallVector<ObjCProtocolDecl *, 16> Protocols; + Protocols.reserve(NumProtocols); + for (unsigned I = 0; I != NumProtocols; ++I) + Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx)); + SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtocols); + for (unsigned I = 0; I != NumProtocols; ++I) + ProtoLocs.push_back(ReadSourceLocation(Record, Idx)); + ID->setProtocolList(Protocols.data(), NumProtocols, ProtoLocs.data(), + Reader.getContext()); + + // Read the transitive closure of protocols referenced by this class. + NumProtocols = Record[Idx++]; + Protocols.clear(); + Protocols.reserve(NumProtocols); + for (unsigned I = 0; I != NumProtocols; ++I) + Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx)); + ID->AllReferencedProtocols.set(Protocols.data(), NumProtocols, + Reader.getContext()); + + // Read the ivars. + unsigned NumIvars = Record[Idx++]; + SmallVector<ObjCIvarDecl *, 16> IVars; + IVars.reserve(NumIvars); + for (unsigned I = 0; I != NumIvars; ++I) + IVars.push_back(ReadDeclAs<ObjCIvarDecl>(Record, Idx)); + ID->setCategoryList(ReadDeclAs<ObjCCategoryDecl>(Record, Idx)); + + // We will rebuild this list lazily. + ID->setIvarList(0); + ID->setForwardDecl(Record[Idx++]); + ID->setImplicitInterfaceDecl(Record[Idx++]); + ID->setSuperClassLoc(ReadSourceLocation(Record, Idx)); + ID->setLocEnd(ReadSourceLocation(Record, Idx)); +} + +void ASTDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) { + VisitFieldDecl(IVD); + IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record[Idx++]); + // This field will be built lazily. + IVD->setNextIvar(0); + bool synth = Record[Idx++]; + IVD->setSynthesize(synth); +} + +void ASTDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) { + VisitObjCContainerDecl(PD); + PD->setForwardDecl(Record[Idx++]); + PD->setLocEnd(ReadSourceLocation(Record, Idx)); + unsigned NumProtoRefs = Record[Idx++]; + SmallVector<ObjCProtocolDecl *, 16> ProtoRefs; + ProtoRefs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx)); + SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoLocs.push_back(ReadSourceLocation(Record, Idx)); + PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(), + Reader.getContext()); +} + +void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) { + VisitFieldDecl(FD); +} + +void ASTDeclReader::VisitObjCClassDecl(ObjCClassDecl *CD) { + VisitDecl(CD); + ObjCInterfaceDecl *ClassRef = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx); + SourceLocation SLoc = ReadSourceLocation(Record, Idx); + CD->setClass(Reader.getContext(), ClassRef, SLoc); +} + +void ASTDeclReader::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *FPD) { + VisitDecl(FPD); + unsigned NumProtoRefs = Record[Idx++]; + SmallVector<ObjCProtocolDecl *, 16> ProtoRefs; + ProtoRefs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx)); + SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoLocs.push_back(ReadSourceLocation(Record, Idx)); + FPD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(), + Reader.getContext()); +} + +void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) { + VisitObjCContainerDecl(CD); + CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx); + unsigned NumProtoRefs = Record[Idx++]; + SmallVector<ObjCProtocolDecl *, 16> ProtoRefs; + ProtoRefs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx)); + SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoLocs.push_back(ReadSourceLocation(Record, Idx)); + CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(), + Reader.getContext()); + CD->NextClassCategory = ReadDeclAs<ObjCCategoryDecl>(Record, Idx); + CD->setHasSynthBitfield(Record[Idx++]); + CD->setCategoryNameLoc(ReadSourceLocation(Record, Idx)); +} + +void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) { + VisitNamedDecl(CAD); + CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx)); +} + +void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { + VisitNamedDecl(D); + D->setAtLoc(ReadSourceLocation(Record, Idx)); + D->setType(GetTypeSourceInfo(Record, Idx)); + // FIXME: stable encoding + D->setPropertyAttributes( + (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]); + D->setPropertyAttributesAsWritten( + (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]); + // FIXME: stable encoding + D->setPropertyImplementation( + (ObjCPropertyDecl::PropertyControl)Record[Idx++]); + D->setGetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector()); + D->setSetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector()); + D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx)); + D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx)); + D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>(Record, Idx)); +} + +void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) { + VisitObjCContainerDecl(D); + D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx)); +} + +void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { + VisitObjCImplDecl(D); + D->setIdentifier(Reader.GetIdentifierInfo(F, Record, Idx)); +} + +void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { + VisitObjCImplDecl(D); + D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx)); + llvm::tie(D->IvarInitializers, D->NumIvarInitializers) + = Reader.ReadCXXCtorInitializers(F, Record, Idx); + D->setHasSynthBitfield(Record[Idx++]); +} + + +void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { + VisitDecl(D); + D->setAtLoc(ReadSourceLocation(Record, Idx)); + D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>(Record, Idx)); + D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>(Record, Idx); + D->IvarLoc = ReadSourceLocation(Record, Idx); + D->setGetterCXXConstructor(Reader.ReadExpr(F)); + D->setSetterCXXAssignment(Reader.ReadExpr(F)); +} + +void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) { + VisitDeclaratorDecl(FD); + FD->setMutable(Record[Idx++]); + int BitWidthOrInitializer = Record[Idx++]; + if (BitWidthOrInitializer == 1) + FD->setBitWidth(Reader.ReadExpr(F)); + else if (BitWidthOrInitializer == 2) + FD->setInClassInitializer(Reader.ReadExpr(F)); + if (!FD->getDeclName()) { + if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>(Record, Idx)) + Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl); + } +} + +void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) { + VisitValueDecl(FD); + + FD->ChainingSize = Record[Idx++]; + assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2"); + FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize]; + + for (unsigned I = 0; I != FD->ChainingSize; ++I) + FD->Chaining[I] = ReadDeclAs<NamedDecl>(Record, Idx); +} + +void ASTDeclReader::VisitVarDecl(VarDecl *VD) { + VisitDeclaratorDecl(VD); + VisitRedeclarable(VD); + VD->VarDeclBits.SClass = (StorageClass)Record[Idx++]; + VD->VarDeclBits.SClassAsWritten = (StorageClass)Record[Idx++]; + VD->VarDeclBits.ThreadSpecified = Record[Idx++]; + VD->VarDeclBits.HasCXXDirectInit = Record[Idx++]; + VD->VarDeclBits.ExceptionVar = Record[Idx++]; + VD->VarDeclBits.NRVOVariable = Record[Idx++]; + VD->VarDeclBits.CXXForRangeDecl = Record[Idx++]; + VD->VarDeclBits.ARCPseudoStrong = Record[Idx++]; + if (Record[Idx++]) + VD->setInit(Reader.ReadExpr(F)); + + if (Record[Idx++]) { // HasMemberSpecializationInfo. + VarDecl *Tmpl = ReadDeclAs<VarDecl>(Record, Idx); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + SourceLocation POI = ReadSourceLocation(Record, Idx); + Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI); + } +} + +void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) { + VisitVarDecl(PD); +} + +void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) { + VisitVarDecl(PD); + unsigned isObjCMethodParam = Record[Idx++]; + unsigned scopeDepth = Record[Idx++]; + unsigned scopeIndex = Record[Idx++]; + unsigned declQualifier = Record[Idx++]; + if (isObjCMethodParam) { + assert(scopeDepth == 0); + PD->setObjCMethodScopeInfo(scopeIndex); + PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier; + } else { + PD->setScopeInfo(scopeDepth, scopeIndex); + } + PD->ParmVarDeclBits.IsKNRPromoted = Record[Idx++]; + PD->ParmVarDeclBits.HasInheritedDefaultArg = Record[Idx++]; + if (Record[Idx++]) // hasUninstantiatedDefaultArg. + PD->setUninstantiatedDefaultArg(Reader.ReadExpr(F)); +} + +void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) { + VisitDecl(AD); + AD->setAsmString(cast<StringLiteral>(Reader.ReadExpr(F))); + AD->setRParenLoc(ReadSourceLocation(Record, Idx)); +} + +void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) { + VisitDecl(BD); + BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadStmt(F))); + BD->setSignatureAsWritten(GetTypeSourceInfo(Record, Idx)); + unsigned NumParams = Record[Idx++]; + SmallVector<ParmVarDecl *, 16> Params; + Params.reserve(NumParams); + for (unsigned I = 0; I != NumParams; ++I) + Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx)); + BD->setParams(Params); + + bool capturesCXXThis = Record[Idx++]; + unsigned numCaptures = Record[Idx++]; + SmallVector<BlockDecl::Capture, 16> captures; + captures.reserve(numCaptures); + for (unsigned i = 0; i != numCaptures; ++i) { + VarDecl *decl = ReadDeclAs<VarDecl>(Record, Idx); + unsigned flags = Record[Idx++]; + bool byRef = (flags & 1); + bool nested = (flags & 2); + Expr *copyExpr = ((flags & 4) ? Reader.ReadExpr(F) : 0); + + captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr)); + } + BD->setCaptures(Reader.getContext(), captures.begin(), + captures.end(), capturesCXXThis); +} + +void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) { + VisitDecl(D); + D->setLanguage((LinkageSpecDecl::LanguageIDs)Record[Idx++]); + D->setExternLoc(ReadSourceLocation(Record, Idx)); + D->setRBraceLoc(ReadSourceLocation(Record, Idx)); +} + +void ASTDeclReader::VisitLabelDecl(LabelDecl *D) { + VisitNamedDecl(D); + D->setLocStart(ReadSourceLocation(Record, Idx)); +} + + +void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) { + VisitNamedDecl(D); + D->IsInline = Record[Idx++]; + D->LocStart = ReadSourceLocation(Record, Idx); + D->RBraceLoc = ReadSourceLocation(Record, Idx); + D->NextNamespace = Record[Idx++]; + + bool IsOriginal = Record[Idx++]; + // FIXME: Modules will likely have trouble with pointing directly at + // the original namespace. + D->OrigOrAnonNamespace.setInt(IsOriginal); + D->OrigOrAnonNamespace.setPointer(ReadDeclAs<NamespaceDecl>(Record, Idx)); +} + +void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { + VisitNamedDecl(D); + D->NamespaceLoc = ReadSourceLocation(Record, Idx); + D->IdentLoc = ReadSourceLocation(Record, Idx); + D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx); + D->Namespace = ReadDeclAs<NamedDecl>(Record, Idx); +} + +void ASTDeclReader::VisitUsingDecl(UsingDecl *D) { + VisitNamedDecl(D); + D->setUsingLocation(ReadSourceLocation(Record, Idx)); + D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx); + ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx); + D->FirstUsingShadow = ReadDeclAs<UsingShadowDecl>(Record, Idx); + D->setTypeName(Record[Idx++]); + if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>(Record, Idx)) + Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern); +} + +void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) { + VisitNamedDecl(D); + D->setTargetDecl(ReadDeclAs<NamedDecl>(Record, Idx)); + D->UsingOrNextShadow = ReadDeclAs<NamedDecl>(Record, Idx); + UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>(Record, Idx); + if (Pattern) + Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern); +} + +void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { + VisitNamedDecl(D); + D->UsingLoc = ReadSourceLocation(Record, Idx); + D->NamespaceLoc = ReadSourceLocation(Record, Idx); + D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx); + D->NominatedNamespace = ReadDeclAs<NamedDecl>(Record, Idx); + D->CommonAncestor = ReadDeclAs<DeclContext>(Record, Idx); +} + +void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { + VisitValueDecl(D); + D->setUsingLoc(ReadSourceLocation(Record, Idx)); + D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx); + ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx); +} + +void ASTDeclReader::VisitUnresolvedUsingTypenameDecl( + UnresolvedUsingTypenameDecl *D) { + VisitTypeDecl(D); + D->TypenameLocation = ReadSourceLocation(Record, Idx); + D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx); +} + +void ASTDeclReader::ReadCXXDefinitionData( + struct CXXRecordDecl::DefinitionData &Data, + const RecordData &Record, unsigned &Idx) { + Data.UserDeclaredConstructor = Record[Idx++]; + Data.UserDeclaredCopyConstructor = Record[Idx++]; + Data.UserDeclaredMoveConstructor = Record[Idx++]; + Data.UserDeclaredCopyAssignment = Record[Idx++]; + Data.UserDeclaredMoveAssignment = Record[Idx++]; + Data.UserDeclaredDestructor = Record[Idx++]; + Data.Aggregate = Record[Idx++]; + Data.PlainOldData = Record[Idx++]; + Data.Empty = Record[Idx++]; + Data.Polymorphic = Record[Idx++]; + Data.Abstract = Record[Idx++]; + Data.IsStandardLayout = Record[Idx++]; + Data.HasNoNonEmptyBases = Record[Idx++]; + Data.HasPrivateFields = Record[Idx++]; + Data.HasProtectedFields = Record[Idx++]; + Data.HasPublicFields = Record[Idx++]; + Data.HasMutableFields = Record[Idx++]; + Data.HasTrivialDefaultConstructor = Record[Idx++]; + Data.HasConstexprNonCopyMoveConstructor = Record[Idx++]; + Data.HasTrivialCopyConstructor = Record[Idx++]; + Data.HasTrivialMoveConstructor = Record[Idx++]; + Data.HasTrivialCopyAssignment = Record[Idx++]; + Data.HasTrivialMoveAssignment = Record[Idx++]; + Data.HasTrivialDestructor = Record[Idx++]; + Data.HasNonLiteralTypeFieldsOrBases = Record[Idx++]; + Data.ComputedVisibleConversions = Record[Idx++]; + Data.UserProvidedDefaultConstructor = Record[Idx++]; + Data.DeclaredDefaultConstructor = Record[Idx++]; + Data.DeclaredCopyConstructor = Record[Idx++]; + Data.DeclaredMoveConstructor = Record[Idx++]; + Data.DeclaredCopyAssignment = Record[Idx++]; + Data.DeclaredMoveAssignment = Record[Idx++]; + Data.DeclaredDestructor = Record[Idx++]; + Data.FailedImplicitMoveConstructor = Record[Idx++]; + Data.FailedImplicitMoveAssignment = Record[Idx++]; + + Data.NumBases = Record[Idx++]; + if (Data.NumBases) + Data.Bases = Reader.readCXXBaseSpecifiers(F, Record, Idx); + Data.NumVBases = Record[Idx++]; + if (Data.NumVBases) + Data.VBases = Reader.readCXXBaseSpecifiers(F, Record, Idx); + + Reader.ReadUnresolvedSet(F, Data.Conversions, Record, Idx); + Reader.ReadUnresolvedSet(F, Data.VisibleConversions, Record, Idx); + assert(Data.Definition && "Data.Definition should be already set!"); + Data.FirstFriend = ReadDeclAs<FriendDecl>(Record, Idx); +} + +void ASTDeclReader::InitializeCXXDefinitionData(CXXRecordDecl *D, + CXXRecordDecl *DefinitionDecl, + const RecordData &Record, + unsigned &Idx) { + ASTContext &C = Reader.getContext(); + + if (D == DefinitionDecl) { + D->DefinitionData = new (C) struct CXXRecordDecl::DefinitionData(D); + ReadCXXDefinitionData(*D->DefinitionData, Record, Idx); + // We read the definition info. Check if there are pending forward + // references that need to point to this DefinitionData pointer. + ASTReader::PendingForwardRefsMap::iterator + FindI = Reader.PendingForwardRefs.find(D); + if (FindI != Reader.PendingForwardRefs.end()) { + ASTReader::ForwardRefs &Refs = FindI->second; + for (ASTReader::ForwardRefs::iterator + I = Refs.begin(), E = Refs.end(); I != E; ++I) + (*I)->DefinitionData = D->DefinitionData; +#ifndef NDEBUG + // We later check whether PendingForwardRefs is empty to make sure all + // pending references were linked. + Reader.PendingForwardRefs.erase(D); +#endif + } + } else if (DefinitionDecl) { + if (DefinitionDecl->DefinitionData) { + D->DefinitionData = DefinitionDecl->DefinitionData; + } else { + // The definition is still initializing. + Reader.PendingForwardRefs[DefinitionDecl].push_back(D); + } + } +} + +void ASTDeclReader::VisitCXXRecordDecl(CXXRecordDecl *D) { + VisitRecordDecl(D); + + CXXRecordDecl *DefinitionDecl = ReadDeclAs<CXXRecordDecl>(Record, Idx); + InitializeCXXDefinitionData(D, DefinitionDecl, Record, Idx); + + ASTContext &C = Reader.getContext(); + + enum CXXRecKind { + CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization + }; + switch ((CXXRecKind)Record[Idx++]) { + default: + llvm_unreachable("Out of sync with ASTDeclWriter::VisitCXXRecordDecl?"); + case CXXRecNotTemplate: + break; + case CXXRecTemplate: + D->TemplateOrInstantiation = ReadDeclAs<ClassTemplateDecl>(Record, Idx); + break; + case CXXRecMemberSpecialization: { + CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>(Record, Idx); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + SourceLocation POI = ReadSourceLocation(Record, Idx); + MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK); + MSI->setPointOfInstantiation(POI); + D->TemplateOrInstantiation = MSI; + break; + } + } + + // Load the key function to avoid deserializing every method so we can + // compute it. + if (D->IsCompleteDefinition) { + if (CXXMethodDecl *Key = ReadDeclAs<CXXMethodDecl>(Record, Idx)) + C.KeyFunctions[D] = Key; + } +} + +void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) { + VisitFunctionDecl(D); + unsigned NumOverridenMethods = Record[Idx++]; + while (NumOverridenMethods--) { + // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod, + // MD may be initializing. + if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>(Record, Idx)) + Reader.getContext().addOverriddenMethod(D, MD); + } +} + +void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) { + VisitCXXMethodDecl(D); + + D->IsExplicitSpecified = Record[Idx++]; + D->ImplicitlyDefined = Record[Idx++]; + llvm::tie(D->CtorInitializers, D->NumCtorInitializers) + = Reader.ReadCXXCtorInitializers(F, Record, Idx); +} + +void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) { + VisitCXXMethodDecl(D); + + D->ImplicitlyDefined = Record[Idx++]; + D->OperatorDelete = ReadDeclAs<FunctionDecl>(Record, Idx); +} + +void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) { + VisitCXXMethodDecl(D); + D->IsExplicitSpecified = Record[Idx++]; +} + +void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) { + VisitDecl(D); + D->setColonLoc(ReadSourceLocation(Record, Idx)); +} + +void ASTDeclReader::VisitFriendDecl(FriendDecl *D) { + VisitDecl(D); + if (Record[Idx++]) + D->Friend = GetTypeSourceInfo(Record, Idx); + else + D->Friend = ReadDeclAs<NamedDecl>(Record, Idx); + D->NextFriend = Record[Idx++]; + D->UnsupportedFriend = (Record[Idx++] != 0); + D->FriendLoc = ReadSourceLocation(Record, Idx); +} + +void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) { + VisitDecl(D); + unsigned NumParams = Record[Idx++]; + D->NumParams = NumParams; + D->Params = new TemplateParameterList*[NumParams]; + for (unsigned i = 0; i != NumParams; ++i) + D->Params[i] = Reader.ReadTemplateParameterList(F, Record, Idx); + if (Record[Idx++]) // HasFriendDecl + D->Friend = ReadDeclAs<NamedDecl>(Record, Idx); + else + D->Friend = GetTypeSourceInfo(Record, Idx); + D->FriendLoc = ReadSourceLocation(Record, Idx); +} + +void ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) { + VisitNamedDecl(D); + + NamedDecl *TemplatedDecl = ReadDeclAs<NamedDecl>(Record, Idx); + TemplateParameterList* TemplateParams + = Reader.ReadTemplateParameterList(F, Record, Idx); + D->init(TemplatedDecl, TemplateParams); +} + +void ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { + // Initialize CommonOrPrev before VisitTemplateDecl so that getCommonPtr() + // can be used while this is still initializing. + + assert(D->CommonOrPrev.isNull() && "getCommonPtr was called earlier on this"); + DeclID PreviousDeclID = ReadDeclID(Record, Idx); + DeclID FirstDeclID = PreviousDeclID ? ReadDeclID(Record, Idx) : 0; + // We delay loading of the redeclaration chain to avoid deeply nested calls. + // We temporarily set the first (canonical) declaration as the previous one + // which is the one that matters and mark the real previous DeclID to be + // loaded & attached later on. + RedeclarableTemplateDecl *FirstDecl = + cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(FirstDeclID)); + assert((FirstDecl == 0 || FirstDecl->getKind() == D->getKind()) && + "FirstDecl kind mismatch"); + if (FirstDecl) { + D->CommonOrPrev = FirstDecl; + // Mark the real previous DeclID to be loaded & attached later on. + if (PreviousDeclID != FirstDeclID) + Reader.PendingPreviousDecls.push_back(std::make_pair(D, PreviousDeclID)); + } else { + D->CommonOrPrev = D->newCommon(Reader.getContext()); + if (RedeclarableTemplateDecl *RTD + = ReadDeclAs<RedeclarableTemplateDecl>(Record, Idx)) { + assert(RTD->getKind() == D->getKind() && + "InstantiatedFromMemberTemplate kind mismatch"); + D->setInstantiatedFromMemberTemplateImpl(RTD); + if (Record[Idx++]) + D->setMemberSpecialization(); + } + + RedeclarableTemplateDecl *LatestDecl + = ReadDeclAs<RedeclarableTemplateDecl>(Record, Idx); + + // This decl is a first one and the latest declaration that it points to is + // in the same AST file. However, if this actually needs to point to a + // redeclaration in another AST file, we need to update it by checking + // the FirstLatestDeclIDs map which tracks this kind of decls. + assert(Reader.GetDecl(ThisDeclID) == D && "Invalid ThisDeclID ?"); + ASTReader::FirstLatestDeclIDMap::iterator I + = Reader.FirstLatestDeclIDs.find(ThisDeclID); + if (I != Reader.FirstLatestDeclIDs.end()) { + if (Decl *NewLatest = Reader.GetDecl(I->second)) + LatestDecl = cast<RedeclarableTemplateDecl>(NewLatest); + } + + assert(LatestDecl->getKind() == D->getKind() && "Latest kind mismatch"); + D->getCommonPtr()->Latest = LatestDecl; + } + + VisitTemplateDecl(D); + D->IdentifierNamespace = Record[Idx++]; +} + +void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + + if (D->getPreviousDeclaration() == 0) { + // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of + // the specializations. + SmallVector<serialization::DeclID, 2> SpecIDs; + SpecIDs.push_back(0); + + // Specializations. + unsigned Size = Record[Idx++]; + SpecIDs[0] += Size; + for (unsigned I = 0; I != Size; ++I) + SpecIDs.push_back(ReadDeclID(Record, Idx)); + + // Partial specializations. + Size = Record[Idx++]; + SpecIDs[0] += Size; + for (unsigned I = 0; I != Size; ++I) + SpecIDs.push_back(ReadDeclID(Record, Idx)); + + if (SpecIDs[0]) { + typedef serialization::DeclID DeclID; + + ClassTemplateDecl::Common *CommonPtr = D->getCommonPtr(); + CommonPtr->LazySpecializations + = new (Reader.getContext()) DeclID [SpecIDs.size()]; + memcpy(CommonPtr->LazySpecializations, SpecIDs.data(), + SpecIDs.size() * sizeof(DeclID)); + } + + // InjectedClassNameType is computed. + } +} + +void ASTDeclReader::VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D) { + VisitCXXRecordDecl(D); + + ASTContext &C = Reader.getContext(); + if (Decl *InstD = ReadDecl(Record, Idx)) { + if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) { + D->SpecializedTemplate = CTD; + } else { + SmallVector<TemplateArgument, 8> TemplArgs; + Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx); + TemplateArgumentList *ArgList + = TemplateArgumentList::CreateCopy(C, TemplArgs.data(), + TemplArgs.size()); + ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS + = new (C) ClassTemplateSpecializationDecl:: + SpecializedPartialSpecialization(); + PS->PartialSpecialization + = cast<ClassTemplatePartialSpecializationDecl>(InstD); + PS->TemplateArgs = ArgList; + D->SpecializedTemplate = PS; + } + } + + // Explicit info. + if (TypeSourceInfo *TyInfo = GetTypeSourceInfo(Record, Idx)) { + ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo + = new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo; + ExplicitInfo->TypeAsWritten = TyInfo; + ExplicitInfo->ExternLoc = ReadSourceLocation(Record, Idx); + ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation(Record, Idx); + D->ExplicitInfo = ExplicitInfo; + } + + SmallVector<TemplateArgument, 8> TemplArgs; + Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx); + D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs.data(), + TemplArgs.size()); + D->PointOfInstantiation = ReadSourceLocation(Record, Idx); + D->SpecializationKind = (TemplateSpecializationKind)Record[Idx++]; + + if (D->isCanonicalDecl()) { // It's kept in the folding set. + ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>(Record,Idx); + if (ClassTemplatePartialSpecializationDecl *Partial + = dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) { + CanonPattern->getCommonPtr()->PartialSpecializations.InsertNode(Partial); + } else { + CanonPattern->getCommonPtr()->Specializations.InsertNode(D); + } + } +} + +void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl( + ClassTemplatePartialSpecializationDecl *D) { + VisitClassTemplateSpecializationDecl(D); + + ASTContext &C = Reader.getContext(); + D->TemplateParams = Reader.ReadTemplateParameterList(F, Record, Idx); + + unsigned NumArgs = Record[Idx++]; + if (NumArgs) { + D->NumArgsAsWritten = NumArgs; + D->ArgsAsWritten = new (C) TemplateArgumentLoc[NumArgs]; + for (unsigned i=0; i != NumArgs; ++i) + D->ArgsAsWritten[i] = Reader.ReadTemplateArgumentLoc(F, Record, Idx); + } + + D->SequenceNumber = Record[Idx++]; + + // These are read/set from/to the first declaration. + if (D->getPreviousDeclaration() == 0) { + D->InstantiatedFromMember.setPointer( + ReadDeclAs<ClassTemplatePartialSpecializationDecl>(Record, Idx)); + D->InstantiatedFromMember.setInt(Record[Idx++]); + } +} + +void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl( + ClassScopeFunctionSpecializationDecl *D) { + VisitDecl(D); + D->Specialization = ReadDeclAs<CXXMethodDecl>(Record, Idx); +} + +void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + + if (D->getPreviousDeclaration() == 0) { + // This FunctionTemplateDecl owns a CommonPtr; read it. + + // Read the function specialization declarations. + // FunctionTemplateDecl's FunctionTemplateSpecializationInfos are filled + // when reading the specialized FunctionDecl. + unsigned NumSpecs = Record[Idx++]; + while (NumSpecs--) + (void)ReadDecl(Record, Idx); + } +} + +void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { + VisitTypeDecl(D); + + D->setDeclaredWithTypename(Record[Idx++]); + + bool Inherited = Record[Idx++]; + TypeSourceInfo *DefArg = GetTypeSourceInfo(Record, Idx); + D->setDefaultArgument(DefArg, Inherited); +} + +void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { + VisitDeclaratorDecl(D); + // TemplateParmPosition. + D->setDepth(Record[Idx++]); + D->setPosition(Record[Idx++]); + if (D->isExpandedParameterPack()) { + void **Data = reinterpret_cast<void **>(D + 1); + for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { + Data[2*I] = Reader.readType(F, Record, Idx).getAsOpaquePtr(); + Data[2*I + 1] = GetTypeSourceInfo(Record, Idx); + } + } else { + // Rest of NonTypeTemplateParmDecl. + D->ParameterPack = Record[Idx++]; + if (Record[Idx++]) { + Expr *DefArg = Reader.ReadExpr(F); + bool Inherited = Record[Idx++]; + D->setDefaultArgument(DefArg, Inherited); + } + } +} + +void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { + VisitTemplateDecl(D); + // TemplateParmPosition. + D->setDepth(Record[Idx++]); + D->setPosition(Record[Idx++]); + // Rest of TemplateTemplateParmDecl. + TemplateArgumentLoc Arg = Reader.ReadTemplateArgumentLoc(F, Record, Idx); + bool IsInherited = Record[Idx++]; + D->setDefaultArgument(Arg, IsInherited); + D->ParameterPack = Record[Idx++]; +} + +void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); +} + +void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) { + VisitDecl(D); + D->AssertExpr = Reader.ReadExpr(F); + D->Message = cast<StringLiteral>(Reader.ReadExpr(F)); + D->RParenLoc = ReadSourceLocation(Record, Idx); +} + +std::pair<uint64_t, uint64_t> +ASTDeclReader::VisitDeclContext(DeclContext *DC) { + uint64_t LexicalOffset = Record[Idx++]; + uint64_t VisibleOffset = Record[Idx++]; + return std::make_pair(LexicalOffset, VisibleOffset); +} + +template <typename T> +void ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) { + enum RedeclKind { NoRedeclaration = 0, PointsToPrevious, PointsToLatest }; + RedeclKind Kind = (RedeclKind)Record[Idx++]; + switch (Kind) { + default: + llvm_unreachable("Out of sync with ASTDeclWriter::VisitRedeclarable or" + " messed up reading"); + case NoRedeclaration: + break; + case PointsToPrevious: { + DeclID PreviousDeclID = ReadDeclID(Record, Idx); + DeclID FirstDeclID = ReadDeclID(Record, Idx); + // We delay loading of the redeclaration chain to avoid deeply nested calls. + // We temporarily set the first (canonical) declaration as the previous one + // which is the one that matters and mark the real previous DeclID to be + // loaded & attached later on. + D->RedeclLink = typename Redeclarable<T>::PreviousDeclLink( + cast_or_null<T>(Reader.GetDecl(FirstDeclID))); + if (PreviousDeclID != FirstDeclID) + Reader.PendingPreviousDecls.push_back(std::make_pair(static_cast<T*>(D), + PreviousDeclID)); + break; + } + case PointsToLatest: + D->RedeclLink = typename Redeclarable<T>::LatestDeclLink( + ReadDeclAs<T>(Record, Idx)); + break; + } + + assert(!(Kind == PointsToPrevious && + Reader.FirstLatestDeclIDs.find(ThisDeclID) != + Reader.FirstLatestDeclIDs.end()) && + "This decl is not first, it should not be in the map"); + if (Kind == PointsToPrevious) + return; + + // This decl is a first one and the latest declaration that it points to is in + // the same AST file. However, if this actually needs to point to a + // redeclaration in another AST file, we need to update it by checking the + // FirstLatestDeclIDs map which tracks this kind of decls. + assert(Reader.GetDecl(ThisDeclID) == static_cast<T*>(D) && + "Invalid ThisDeclID ?"); + ASTReader::FirstLatestDeclIDMap::iterator I + = Reader.FirstLatestDeclIDs.find(ThisDeclID); + if (I != Reader.FirstLatestDeclIDs.end()) { + Decl *NewLatest = Reader.GetDecl(I->second); + D->RedeclLink + = typename Redeclarable<T>::LatestDeclLink(cast_or_null<T>(NewLatest)); + } +} + +//===----------------------------------------------------------------------===// +// Attribute Reading +//===----------------------------------------------------------------------===// + +/// \brief Reads attributes from the current stream position. +void ASTReader::ReadAttributes(Module &F, AttrVec &Attrs, + const RecordData &Record, unsigned &Idx) { + for (unsigned i = 0, e = Record[Idx++]; i != e; ++i) { + Attr *New = 0; + attr::Kind Kind = (attr::Kind)Record[Idx++]; + SourceRange Range = ReadSourceRange(F, Record, Idx); + +#include "clang/Serialization/AttrPCHRead.inc" + + assert(New && "Unable to decode attribute?"); + Attrs.push_back(New); + } +} + +//===----------------------------------------------------------------------===// +// ASTReader Implementation +//===----------------------------------------------------------------------===// + +/// \brief Note that we have loaded the declaration with the given +/// Index. +/// +/// This routine notes that this declaration has already been loaded, +/// so that future GetDecl calls will return this declaration rather +/// than trying to load a new declaration. +inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) { + assert(!DeclsLoaded[Index] && "Decl loaded twice?"); + DeclsLoaded[Index] = D; +} + + +/// \brief Determine whether the consumer will be interested in seeing +/// this declaration (via HandleTopLevelDecl). +/// +/// This routine should return true for anything that might affect +/// code generation, e.g., inline function definitions, Objective-C +/// declarations with metadata, etc. +static bool isConsumerInterestedIn(Decl *D) { + // An ObjCMethodDecl is never considered as "interesting" because its + // implementation container always is. + + if (isa<FileScopeAsmDecl>(D) || + isa<ObjCProtocolDecl>(D) || + isa<ObjCImplDecl>(D)) + return true; + if (VarDecl *Var = dyn_cast<VarDecl>(D)) + return Var->isFileVarDecl() && + Var->isThisDeclarationADefinition() == VarDecl::Definition; + if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D)) + return Func->doesThisDeclarationHaveABody(); + + return false; +} + +/// \brief Get the correct cursor and offset for loading a declaration. +ASTReader::RecordLocation +ASTReader::DeclCursorForID(DeclID ID) { + // See if there's an override. + DeclReplacementMap::iterator It = ReplacedDecls.find(ID); + if (It != ReplacedDecls.end()) + return RecordLocation(It->second.first, It->second.second); + + GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID); + assert(I != GlobalDeclMap.end() && "Corrupted global declaration map"); + Module *M = I->second; + return RecordLocation(M, + M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS]); +} + +ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) { + ContinuousRangeMap<uint64_t, Module*, 4>::iterator I + = GlobalBitOffsetsMap.find(GlobalOffset); + + assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map"); + return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset); +} + +uint64_t ASTReader::getGlobalBitOffset(Module &M, uint32_t LocalOffset) { + return LocalOffset + M.GlobalBitOffset; +} + +void ASTDeclReader::attachPreviousDecl(Decl *D, Decl *previous) { + assert(D && previous); + if (TagDecl *TD = dyn_cast<TagDecl>(D)) { + TD->RedeclLink.setPointer(cast<TagDecl>(previous)); + } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { + FD->RedeclLink.setPointer(cast<FunctionDecl>(previous)); + } else if (VarDecl *VD = dyn_cast<VarDecl>(D)) { + VD->RedeclLink.setPointer(cast<VarDecl>(previous)); + } else { + RedeclarableTemplateDecl *TD = cast<RedeclarableTemplateDecl>(D); + TD->CommonOrPrev = cast<RedeclarableTemplateDecl>(previous); + } +} + +void ASTReader::loadAndAttachPreviousDecl(Decl *D, serialization::DeclID ID) { + Decl *previous = GetDecl(ID); + ASTDeclReader::attachPreviousDecl(D, previous); +} + +/// \brief Read the declaration at the given offset from the AST file. +Decl *ASTReader::ReadDeclRecord(DeclID ID) { + unsigned Index = ID - NUM_PREDEF_DECL_IDS; + RecordLocation Loc = DeclCursorForID(ID); + llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor; + // Keep track of where we are in the stream, then jump back there + // after reading this declaration. + SavedStreamPosition SavedPosition(DeclsCursor); + + ReadingKindTracker ReadingKind(Read_Decl, *this); + + // Note that we are loading a declaration record. + Deserializing ADecl(this); + + DeclsCursor.JumpToBit(Loc.Offset); + RecordData Record; + unsigned Code = DeclsCursor.ReadCode(); + unsigned Idx = 0; + ASTDeclReader Reader(*this, *Loc.F, DeclsCursor, ID, Record, Idx); + + Decl *D = 0; + switch ((DeclCode)DeclsCursor.ReadRecord(Code, Record)) { + case DECL_CONTEXT_LEXICAL: + case DECL_CONTEXT_VISIBLE: + llvm_unreachable("Record cannot be de-serialized with ReadDeclRecord"); + case DECL_TYPEDEF: + D = TypedefDecl::Create(Context, 0, SourceLocation(), SourceLocation(), + 0, 0); + break; + case DECL_TYPEALIAS: + D = TypeAliasDecl::Create(Context, 0, SourceLocation(), SourceLocation(), + 0, 0); + break; + case DECL_ENUM: + D = EnumDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_RECORD: + D = RecordDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_ENUM_CONSTANT: + D = EnumConstantDecl::Create(Context, 0, SourceLocation(), 0, QualType(), + 0, llvm::APSInt()); + break; + case DECL_FUNCTION: + D = FunctionDecl::Create(Context, 0, SourceLocation(), SourceLocation(), + DeclarationName(), QualType(), 0); + break; + case DECL_LINKAGE_SPEC: + D = LinkageSpecDecl::Create(Context, 0, SourceLocation(), SourceLocation(), + (LinkageSpecDecl::LanguageIDs)0, + SourceLocation()); + break; + case DECL_LABEL: + D = LabelDecl::Create(Context, 0, SourceLocation(), 0); + break; + case DECL_NAMESPACE: + D = NamespaceDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), 0); + break; + case DECL_NAMESPACE_ALIAS: + D = NamespaceAliasDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), 0, + NestedNameSpecifierLoc(), + SourceLocation(), 0); + break; + case DECL_USING: + D = UsingDecl::Create(Context, 0, SourceLocation(), + NestedNameSpecifierLoc(), DeclarationNameInfo(), + false); + break; + case DECL_USING_SHADOW: + D = UsingShadowDecl::Create(Context, 0, SourceLocation(), 0, 0); + break; + case DECL_USING_DIRECTIVE: + D = UsingDirectiveDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), NestedNameSpecifierLoc(), + SourceLocation(), 0, 0); + break; + case DECL_UNRESOLVED_USING_VALUE: + D = UnresolvedUsingValueDecl::Create(Context, 0, SourceLocation(), + NestedNameSpecifierLoc(), + DeclarationNameInfo()); + break; + case DECL_UNRESOLVED_USING_TYPENAME: + D = UnresolvedUsingTypenameDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), + NestedNameSpecifierLoc(), + SourceLocation(), + DeclarationName()); + break; + case DECL_CXX_RECORD: + D = CXXRecordDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_CXX_METHOD: + D = CXXMethodDecl::Create(Context, 0, SourceLocation(), + DeclarationNameInfo(), QualType(), 0, + false, SC_None, false, false, SourceLocation()); + break; + case DECL_CXX_CONSTRUCTOR: + D = CXXConstructorDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_CXX_DESTRUCTOR: + D = CXXDestructorDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_CXX_CONVERSION: + D = CXXConversionDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_ACCESS_SPEC: + D = AccessSpecDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_FRIEND: + D = FriendDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_FRIEND_TEMPLATE: + D = FriendTemplateDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_CLASS_TEMPLATE: + D = ClassTemplateDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_CLASS_TEMPLATE_SPECIALIZATION: + D = ClassTemplateSpecializationDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION: + D = ClassTemplatePartialSpecializationDecl::Create(Context, + Decl::EmptyShell()); + break; + case DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION: + D = ClassScopeFunctionSpecializationDecl::Create(Context, + Decl::EmptyShell()); + break; + case DECL_FUNCTION_TEMPLATE: + D = FunctionTemplateDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_TEMPLATE_TYPE_PARM: + D = TemplateTypeParmDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_NON_TYPE_TEMPLATE_PARM: + D = NonTypeTemplateParmDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), 0, 0, 0, QualType(), + false, 0); + break; + case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK: + D = NonTypeTemplateParmDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), 0, 0, 0, QualType(), + 0, 0, Record[Idx++], 0); + break; + case DECL_TEMPLATE_TEMPLATE_PARM: + D = TemplateTemplateParmDecl::Create(Context, 0, SourceLocation(), 0, 0, + false, 0, 0); + break; + case DECL_TYPE_ALIAS_TEMPLATE: + D = TypeAliasTemplateDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_STATIC_ASSERT: + D = StaticAssertDecl::Create(Context, 0, SourceLocation(), 0, 0, + SourceLocation()); + break; + + case DECL_OBJC_METHOD: + D = ObjCMethodDecl::Create(Context, SourceLocation(), SourceLocation(), + Selector(), QualType(), 0, 0); + break; + case DECL_OBJC_INTERFACE: + D = ObjCInterfaceDecl::Create(Context, 0, SourceLocation(), 0); + break; + case DECL_OBJC_IVAR: + D = ObjCIvarDecl::Create(Context, 0, SourceLocation(), SourceLocation(), + 0, QualType(), 0, ObjCIvarDecl::None); + break; + case DECL_OBJC_PROTOCOL: + D = ObjCProtocolDecl::Create(Context, 0, 0, SourceLocation(), + SourceLocation()); + break; + case DECL_OBJC_AT_DEFS_FIELD: + D = ObjCAtDefsFieldDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), 0, QualType(), 0); + break; + case DECL_OBJC_CLASS: + D = ObjCClassDecl::Create(Context, 0, SourceLocation()); + break; + case DECL_OBJC_FORWARD_PROTOCOL: + D = ObjCForwardProtocolDecl::Create(Context, 0, SourceLocation()); + break; + case DECL_OBJC_CATEGORY: + D = ObjCCategoryDecl::Create(Context, Decl::EmptyShell()); + break; + case DECL_OBJC_CATEGORY_IMPL: + D = ObjCCategoryImplDecl::Create(Context, 0, 0, 0, SourceLocation(), + SourceLocation()); + break; + case DECL_OBJC_IMPLEMENTATION: + D = ObjCImplementationDecl::Create(Context, 0, 0, 0, SourceLocation(), + SourceLocation()); + break; + case DECL_OBJC_COMPATIBLE_ALIAS: + D = ObjCCompatibleAliasDecl::Create(Context, 0, SourceLocation(), 0, 0); + break; + case DECL_OBJC_PROPERTY: + D = ObjCPropertyDecl::Create(Context, 0, SourceLocation(), 0, SourceLocation(), + 0); + break; + case DECL_OBJC_PROPERTY_IMPL: + D = ObjCPropertyImplDecl::Create(Context, 0, SourceLocation(), + SourceLocation(), 0, + ObjCPropertyImplDecl::Dynamic, 0, + SourceLocation()); + break; + case DECL_FIELD: + D = FieldDecl::Create(Context, 0, SourceLocation(), SourceLocation(), 0, + QualType(), 0, 0, false, false); + break; + case DECL_INDIRECTFIELD: + D = IndirectFieldDecl::Create(Context, 0, SourceLocation(), 0, QualType(), + 0, 0); + break; + case DECL_VAR: + D = VarDecl::Create(Context, 0, SourceLocation(), SourceLocation(), 0, + QualType(), 0, SC_None, SC_None); + break; + + case DECL_IMPLICIT_PARAM: + D = ImplicitParamDecl::Create(Context, 0, SourceLocation(), 0, QualType()); + break; + + case DECL_PARM_VAR: + D = ParmVarDecl::Create(Context, 0, SourceLocation(), SourceLocation(), 0, + QualType(), 0, SC_None, SC_None, 0); + break; + case DECL_FILE_SCOPE_ASM: + D = FileScopeAsmDecl::Create(Context, 0, 0, SourceLocation(), + SourceLocation()); + break; + case DECL_BLOCK: + D = BlockDecl::Create(Context, 0, SourceLocation()); + break; + case DECL_CXX_BASE_SPECIFIERS: + Error("attempt to read a C++ base-specifier record as a declaration"); + return 0; + } + + assert(D && "Unknown declaration reading AST file"); + LoadedDecl(Index, D); + Reader.Visit(D); + + // If this declaration is also a declaration context, get the + // offsets for its tables of lexical and visible declarations. + if (DeclContext *DC = dyn_cast<DeclContext>(D)) { + std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC); + if (Offsets.first || Offsets.second) { + if (Offsets.first != 0) + DC->setHasExternalLexicalStorage(true); + if (Offsets.second != 0) + DC->setHasExternalVisibleStorage(true); + if (ReadDeclContextStorage(*Loc.F, DeclsCursor, Offsets, + Loc.F->DeclContextInfos[DC])) + return 0; + } + + // Now add the pending visible updates for this decl context, if it has any. + DeclContextVisibleUpdatesPending::iterator I = + PendingVisibleUpdates.find(ID); + if (I != PendingVisibleUpdates.end()) { + // There are updates. This means the context has external visible + // storage, even if the original stored version didn't. + DC->setHasExternalVisibleStorage(true); + DeclContextVisibleUpdates &U = I->second; + for (DeclContextVisibleUpdates::iterator UI = U.begin(), UE = U.end(); + UI != UE; ++UI) { + UI->second->DeclContextInfos[DC].NameLookupTableData = UI->first; + } + PendingVisibleUpdates.erase(I); + } + } + assert(Idx == Record.size()); + + // Load any relevant update records. + loadDeclUpdateRecords(ID, D); + + if (ObjCChainedCategoriesInterfaces.count(ID)) + loadObjCChainedCategories(ID, cast<ObjCInterfaceDecl>(D)); + + // If we have deserialized a declaration that has a definition the + // AST consumer might need to know about, queue it. + // We don't pass it to the consumer immediately because we may be in recursive + // loading, and some declarations may still be initializing. + if (isConsumerInterestedIn(D)) + InterestingDecls.push_back(D); + + return D; +} + +void ASTReader::loadDeclUpdateRecords(serialization::DeclID ID, Decl *D) { + // The declaration may have been modified by files later in the chain. + // If this is the case, read the record containing the updates from each file + // and pass it to ASTDeclReader to make the modifications. + DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID); + if (UpdI != DeclUpdateOffsets.end()) { + FileOffsetsTy &UpdateOffsets = UpdI->second; + for (FileOffsetsTy::iterator + I = UpdateOffsets.begin(), E = UpdateOffsets.end(); I != E; ++I) { + Module *F = I->first; + uint64_t Offset = I->second; + llvm::BitstreamCursor &Cursor = F->DeclsCursor; + SavedStreamPosition SavedPosition(Cursor); + Cursor.JumpToBit(Offset); + RecordData Record; + unsigned Code = Cursor.ReadCode(); + unsigned RecCode = Cursor.ReadRecord(Code, Record); + (void)RecCode; + assert(RecCode == DECL_UPDATES && "Expected DECL_UPDATES record!"); + + unsigned Idx = 0; + ASTDeclReader Reader(*this, *F, Cursor, ID, Record, Idx); + Reader.UpdateDecl(D, *F, Record); + } + } +} + +namespace { + /// \brief Given an ObjC interface, goes through the modules and links to the + /// interface all the categories for it. + class ObjCChainedCategoriesVisitor { + ASTReader &Reader; + serialization::GlobalDeclID InterfaceID; + ObjCInterfaceDecl *Interface; + ObjCCategoryDecl *GlobHeadCat, *GlobTailCat; + llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap; + + public: + ObjCChainedCategoriesVisitor(ASTReader &Reader, + serialization::GlobalDeclID InterfaceID, + ObjCInterfaceDecl *Interface) + : Reader(Reader), InterfaceID(InterfaceID), Interface(Interface), + GlobHeadCat(0), GlobTailCat(0) { } + + static bool visit(Module &M, void *UserData) { + return static_cast<ObjCChainedCategoriesVisitor *>(UserData)->visit(M); + } + + bool visit(Module &M) { + if (Reader.isDeclIDFromModule(InterfaceID, M)) + return true; // We reached the module where the interface originated + // from. Stop traversing the imported modules. + + Module::ChainedObjCCategoriesMap::iterator + I = M.ChainedObjCCategories.find(InterfaceID); + if (I == M.ChainedObjCCategories.end()) + return false; + + ObjCCategoryDecl * + HeadCat = Reader.GetLocalDeclAs<ObjCCategoryDecl>(M, I->second.first); + ObjCCategoryDecl * + TailCat = Reader.GetLocalDeclAs<ObjCCategoryDecl>(M, I->second.second); + + addCategories(HeadCat, TailCat); + return false; + } + + void addCategories(ObjCCategoryDecl *HeadCat, + ObjCCategoryDecl *TailCat = 0) { + if (!HeadCat) { + assert(!TailCat); + return; + } + + if (!TailCat) { + TailCat = HeadCat; + while (TailCat->getNextClassCategory()) + TailCat = TailCat->getNextClassCategory(); + } + + if (!GlobHeadCat) { + GlobHeadCat = HeadCat; + GlobTailCat = TailCat; + } else { + ASTDeclReader::setNextObjCCategory(GlobTailCat, HeadCat); + GlobTailCat = TailCat; + } + + llvm::DenseSet<DeclarationName> Checked; + for (ObjCCategoryDecl *Cat = HeadCat, + *CatEnd = TailCat->getNextClassCategory(); + Cat != CatEnd; Cat = Cat->getNextClassCategory()) { + if (Checked.count(Cat->getDeclName())) + continue; + Checked.insert(Cat->getDeclName()); + checkForDuplicate(Cat); + } + } + + /// \brief Warns for duplicate categories that come from different modules. + void checkForDuplicate(ObjCCategoryDecl *Cat) { + DeclarationName Name = Cat->getDeclName(); + // Find the top category with the same name. We do not want to warn for + // duplicates along the established chain because there were already + // warnings for them when the module was created. We only want to warn for + // duplicates between non-dependent modules: + // + // MT // + // / \ // + // ML MR // + // + // We want to warn for duplicates between ML and MR,not between ML and MT. + // + // FIXME: We should not warn for duplicates in diamond: + // + // MT // + // / \ // + // ML MR // + // \ / // + // MB // + // + // If there are duplicates in ML/MR, there will be warning when creating + // MB *and* when importing MB. We should not warn when importing. + for (ObjCCategoryDecl *Next = Cat->getNextClassCategory(); Next; + Next = Next->getNextClassCategory()) { + if (Next->getDeclName() == Name) + Cat = Next; + } + + ObjCCategoryDecl *&PrevCat = NameCategoryMap[Name]; + if (!PrevCat) + PrevCat = Cat; + + if (PrevCat != Cat) { + Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def) + << Interface->getDeclName() << Name; + Reader.Diag(PrevCat->getLocation(), diag::note_previous_definition); + } + } + + ObjCCategoryDecl *getHeadCategory() const { return GlobHeadCat; } + }; +} + +void ASTReader::loadObjCChainedCategories(serialization::GlobalDeclID ID, + ObjCInterfaceDecl *D) { + ObjCChainedCategoriesVisitor Visitor(*this, ID, D); + ModuleMgr.visit(ObjCChainedCategoriesVisitor::visit, &Visitor); + // Also add the categories that the interface already links to. + Visitor.addCategories(D->getCategoryList()); + D->setCategoryList(Visitor.getHeadCategory()); +} + +void ASTDeclReader::UpdateDecl(Decl *D, Module &Module, + const RecordData &Record) { + unsigned Idx = 0; + while (Idx < Record.size()) { + switch ((DeclUpdateKind)Record[Idx++]) { + case UPD_CXX_SET_DEFINITIONDATA: { + CXXRecordDecl *RD = cast<CXXRecordDecl>(D); + CXXRecordDecl *DefinitionDecl + = Reader.ReadDeclAs<CXXRecordDecl>(Module, Record, Idx); + assert(!RD->DefinitionData && "DefinitionData is already set!"); + InitializeCXXDefinitionData(RD, DefinitionDecl, Record, Idx); + break; + } + + case UPD_CXX_ADDED_IMPLICIT_MEMBER: + cast<CXXRecordDecl>(D)->addedMember(Reader.ReadDecl(Module, Record, Idx)); + break; + + case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION: + // It will be added to the template's specializations set when loaded. + (void)Reader.ReadDecl(Module, Record, Idx); + break; + + case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: { + NamespaceDecl *Anon + = Reader.ReadDeclAs<NamespaceDecl>(Module, Record, Idx); + // Guard against these being loaded out of original order. Don't use + // getNextNamespace(), since it tries to access the context and can't in + // the middle of deserialization. + if (!Anon->NextNamespace) { + if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(D)) + TU->setAnonymousNamespace(Anon); + else + cast<NamespaceDecl>(D)->OrigOrAnonNamespace.setPointer(Anon); + } + break; + } + + case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER: + cast<VarDecl>(D)->getMemberSpecializationInfo()->setPointOfInstantiation( + Reader.ReadSourceLocation(Module, Record, Idx)); + break; + } + } +} |
