diff options
Diffstat (limited to 'lib/Serialization/ASTReaderDecl.cpp')
| -rw-r--r-- | lib/Serialization/ASTReaderDecl.cpp | 1462 |
1 files changed, 1462 insertions, 0 deletions
diff --git a/lib/Serialization/ASTReaderDecl.cpp b/lib/Serialization/ASTReaderDecl.cpp new file mode 100644 index 000000000000..7adbe1220ff7 --- /dev/null +++ b/lib/Serialization/ASTReaderDecl.cpp @@ -0,0 +1,1462 @@ +//===--- 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 "clang/Serialization/ASTReader.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; + llvm::BitstreamCursor &Cursor; + const DeclID ThisDeclID; + const ASTReader::RecordData &Record; + unsigned &Idx; + TypeID TypeIDForTypeDecl; + + uint64_t GetCurrentCursorOffset(); + + public: + ASTDeclReader(ASTReader &Reader, llvm::BitstreamCursor &Cursor, + DeclID thisDeclID, const ASTReader::RecordData &Record, + unsigned &Idx) + : Reader(Reader), Cursor(Cursor), ThisDeclID(thisDeclID), Record(Record), + Idx(Idx), TypeIDForTypeDecl(0) { } + + void Visit(Decl *D); + + void VisitDecl(Decl *D); + void VisitTranslationUnitDecl(TranslationUnitDecl *TU); + void VisitNamedDecl(NamedDecl *ND); + void VisitNamespaceDecl(NamespaceDecl *D); + void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); + void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); + void VisitTypeDecl(TypeDecl *TD); + void VisitTypedefDecl(TypedefDecl *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 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 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 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() { + uint64_t Off = 0; + for (unsigned I = 0, N = Reader.Chain.size(); I != N; ++I) { + ASTReader::PerFileData &F = *Reader.Chain[N - I - 1]; + if (&Cursor == &F.DeclsCursor) { + Off += F.DeclsCursor.GetCurrentBitNo(); + break; + } + Off += F.SizeInBits; + } + return Off; +} + +void ASTDeclReader::Visit(Decl *D) { + DeclVisitor<ASTDeclReader, void>::Visit(D); + + 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).getTypePtr()); + } 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()); + } +} + +void ASTDeclReader::VisitDecl(Decl *D) { + D->setDeclContext(cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++]))); + D->setLexicalDeclContext( + cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++]))); + D->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++])); + D->setInvalidDecl(Record[Idx++]); + if (Record[Idx++]) { + AttrVec Attrs; + Reader.ReadAttributes(Cursor, Attrs); + D->setAttrs(Attrs); + } + D->setImplicit(Record[Idx++]); + D->setUsed(Record[Idx++]); + D->setAccess((AccessSpecifier)Record[Idx++]); + D->setPCHLevel(Record[Idx++] + 1); +} + +void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) { + VisitDecl(TU); + TU->setAnonymousNamespace( + cast_or_null<NamespaceDecl>(Reader.GetDecl(Record[Idx++]))); +} + +void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) { + VisitDecl(ND); + ND->setDeclName(Reader.ReadDeclarationName(Record, Idx)); +} + +void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) { + VisitNamedDecl(TD); + // Delay type reading until after we have fully initialized the decl. + TypeIDForTypeDecl = Record[Idx++]; +} + +void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) { + VisitTypeDecl(TD); + TD->setTypeSourceInfo(Reader.GetTypeSourceInfo(Cursor, Record, Idx)); +} + +void ASTDeclReader::VisitTagDecl(TagDecl *TD) { + VisitTypeDecl(TD); + TD->IdentifierNamespace = Record[Idx++]; + VisitRedeclarable(TD); + TD->setTagKind((TagDecl::TagKind)Record[Idx++]); + TD->setDefinition(Record[Idx++]); + TD->setEmbeddedInDeclarator(Record[Idx++]); + TD->setRBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + TD->setTagKeywordLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + // FIXME: maybe read optional qualifier and its range. + TD->setTypedefForAnonDecl( + cast_or_null<TypedefDecl>(Reader.GetDecl(Record[Idx++]))); +} + +void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) { + VisitTagDecl(ED); + ED->setIntegerType(Reader.GetType(Record[Idx++])); + ED->setPromotionType(Reader.GetType(Record[Idx++])); + ED->setNumPositiveBits(Record[Idx++]); + ED->setNumNegativeBits(Record[Idx++]); + ED->setInstantiationOfMemberEnum( + cast_or_null<EnumDecl>(Reader.GetDecl(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.GetType(Record[Idx++])); +} + +void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) { + VisitValueDecl(ECD); + if (Record[Idx++]) + ECD->setInitExpr(Reader.ReadExpr(Cursor)); + ECD->setInitVal(Reader.ReadAPSInt(Record, Idx)); +} + +void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) { + VisitValueDecl(DD); + TypeSourceInfo *TInfo = Reader.GetTypeSourceInfo(Cursor, Record, Idx); + if (TInfo) + DD->setTypeSourceInfo(TInfo); + // FIXME: read optional qualifier and its range. +} + +void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) { + VisitDeclaratorDecl(FD); + // FIXME: read DeclarationNameLoc. + + FD->IdentifierNamespace = Record[Idx++]; + switch ((FunctionDecl::TemplatedKind)Record[Idx++]) { + default: assert(false && "Unhandled TemplatedKind!"); + break; + case FunctionDecl::TK_NonTemplate: + break; + case FunctionDecl::TK_FunctionTemplate: + FD->setDescribedFunctionTemplate( + cast<FunctionTemplateDecl>(Reader.GetDecl(Record[Idx++]))); + break; + case FunctionDecl::TK_MemberSpecialization: { + FunctionDecl *InstFD = cast<FunctionDecl>(Reader.GetDecl(Record[Idx++])); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + SourceLocation POI = Reader.ReadSourceLocation(Record, Idx); + FD->setInstantiationOfMemberFunction(InstFD, TSK); + FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI); + break; + } + case FunctionDecl::TK_FunctionTemplateSpecialization: { + FunctionTemplateDecl *Template + = cast<FunctionTemplateDecl>(Reader.GetDecl(Record[Idx++])); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + + // Template arguments. + llvm::SmallVector<TemplateArgument, 8> TemplArgs; + Reader.ReadTemplateArgumentList(TemplArgs, Cursor, Record, Idx); + + // Template args as written. + llvm::SmallVector<TemplateArgumentLoc, 8> TemplArgLocs; + SourceLocation LAngleLoc, RAngleLoc; + if (Record[Idx++]) { // TemplateArgumentsAsWritten != 0 + unsigned NumTemplateArgLocs = Record[Idx++]; + TemplArgLocs.reserve(NumTemplateArgLocs); + for (unsigned i=0; i != NumTemplateArgLocs; ++i) + TemplArgLocs.push_back( + Reader.ReadTemplateArgumentLoc(Cursor, Record, Idx)); + + LAngleLoc = Reader.ReadSourceLocation(Record, Idx); + RAngleLoc = Reader.ReadSourceLocation(Record, Idx); + } + + SourceLocation POI = Reader.ReadSourceLocation(Record, Idx); + + if (FD->isCanonicalDecl()) // if canonical add to template's set. + FD->setFunctionTemplateSpecialization(Template, TemplArgs.size(), + TemplArgs.data(), TSK, + TemplArgLocs.size(), + TemplArgLocs.data(), + LAngleLoc, RAngleLoc, POI); + break; + } + case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { + // Templates. + UnresolvedSet<8> TemplDecls; + unsigned NumTemplates = Record[Idx++]; + while (NumTemplates--) + TemplDecls.addDecl(cast<NamedDecl>(Reader.GetDecl(Record[Idx++]))); + + // Templates args. + TemplateArgumentListInfo TemplArgs; + unsigned NumArgs = Record[Idx++]; + while (NumArgs--) + TemplArgs.addArgument(Reader.ReadTemplateArgumentLoc(Cursor,Record, Idx)); + TemplArgs.setLAngleLoc(Reader.ReadSourceLocation(Record, Idx)); + TemplArgs.setRAngleLoc(Reader.ReadSourceLocation(Record, Idx)); + + FD->setDependentTemplateSpecialization(*Reader.getContext(), + TemplDecls, TemplArgs); + break; + } + } + + // FunctionDecl's body is handled last at ASTDeclReader::Visit, + // after everything else is read. + + VisitRedeclarable(FD); + FD->setStorageClass((StorageClass)Record[Idx++]); + FD->setStorageClassAsWritten((StorageClass)Record[Idx++]); + FD->setInlineSpecified(Record[Idx++]); + FD->setVirtualAsWritten(Record[Idx++]); + FD->setPure(Record[Idx++]); + FD->setHasInheritedPrototype(Record[Idx++]); + FD->setHasWrittenPrototype(Record[Idx++]); + FD->setDeleted(Record[Idx++]); + FD->setTrivial(Record[Idx++]); + FD->setCopyAssignment(Record[Idx++]); + FD->setHasImplicitReturnZero(Record[Idx++]); + FD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++])); + + // Read in the parameters. + unsigned NumParams = Record[Idx++]; + llvm::SmallVector<ParmVarDecl *, 16> Params; + Params.reserve(NumParams); + for (unsigned I = 0; I != NumParams; ++I) + Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++]))); + FD->setParams(Params.data(), NumParams); +} + +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(Cursor)); + MD->setSelfDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++]))); + MD->setCmdDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++]))); + } + MD->setInstanceMethod(Record[Idx++]); + MD->setVariadic(Record[Idx++]); + MD->setSynthesized(Record[Idx++]); + MD->setDefined(Record[Idx++]); + MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]); + MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]); + MD->setNumSelectorArgs(unsigned(Record[Idx++])); + MD->setResultType(Reader.GetType(Record[Idx++])); + MD->setResultTypeSourceInfo(Reader.GetTypeSourceInfo(Cursor, Record, Idx)); + MD->setEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + unsigned NumParams = Record[Idx++]; + llvm::SmallVector<ParmVarDecl *, 16> Params; + Params.reserve(NumParams); + for (unsigned I = 0; I != NumParams; ++I) + Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++]))); + MD->setMethodParams(*Reader.getContext(), Params.data(), NumParams, + NumParams); +} + +void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) { + VisitNamedDecl(CD); + SourceLocation A = SourceLocation::getFromRawEncoding(Record[Idx++]); + SourceLocation B = SourceLocation::getFromRawEncoding(Record[Idx++]); + CD->setAtEndRange(SourceRange(A, B)); +} + +void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) { + VisitObjCContainerDecl(ID); + ID->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtr()); + ID->setSuperClass(cast_or_null<ObjCInterfaceDecl> + (Reader.GetDecl(Record[Idx++]))); + + // Read the directly referenced protocols and their SourceLocations. + unsigned NumProtocols = Record[Idx++]; + llvm::SmallVector<ObjCProtocolDecl *, 16> Protocols; + Protocols.reserve(NumProtocols); + for (unsigned I = 0; I != NumProtocols; ++I) + Protocols.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++]))); + llvm::SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtocols); + for (unsigned I = 0; I != NumProtocols; ++I) + ProtoLocs.push_back(SourceLocation::getFromRawEncoding(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(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++]))); + ID->AllReferencedProtocols.set(Protocols.data(), NumProtocols, + *Reader.getContext()); + + // Read the ivars. + unsigned NumIvars = Record[Idx++]; + llvm::SmallVector<ObjCIvarDecl *, 16> IVars; + IVars.reserve(NumIvars); + for (unsigned I = 0; I != NumIvars; ++I) + IVars.push_back(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++]))); + ID->setCategoryList( + cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++]))); + // We will rebuild this list lazily. + ID->setIvarList(0); + ID->setForwardDecl(Record[Idx++]); + ID->setImplicitInterfaceDecl(Record[Idx++]); + ID->setClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + ID->setSuperClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + ID->setLocEnd(SourceLocation::getFromRawEncoding(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(SourceLocation::getFromRawEncoding(Record[Idx++])); + unsigned NumProtoRefs = Record[Idx++]; + llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs; + ProtoRefs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++]))); + llvm::SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoLocs.push_back(SourceLocation::getFromRawEncoding(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); + unsigned NumClassRefs = Record[Idx++]; + llvm::SmallVector<ObjCInterfaceDecl *, 16> ClassRefs; + ClassRefs.reserve(NumClassRefs); + for (unsigned I = 0; I != NumClassRefs; ++I) + ClassRefs.push_back(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++]))); + llvm::SmallVector<SourceLocation, 16> SLocs; + SLocs.reserve(NumClassRefs); + for (unsigned I = 0; I != NumClassRefs; ++I) + SLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++])); + CD->setClassList(*Reader.getContext(), ClassRefs.data(), SLocs.data(), + NumClassRefs); +} + +void ASTDeclReader::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *FPD) { + VisitDecl(FPD); + unsigned NumProtoRefs = Record[Idx++]; + llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs; + ProtoRefs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++]))); + llvm::SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++])); + FPD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(), + *Reader.getContext()); +} + +void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) { + VisitObjCContainerDecl(CD); + CD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++]))); + unsigned NumProtoRefs = Record[Idx++]; + llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs; + ProtoRefs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++]))); + llvm::SmallVector<SourceLocation, 16> ProtoLocs; + ProtoLocs.reserve(NumProtoRefs); + for (unsigned I = 0; I != NumProtoRefs; ++I) + ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++])); + CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(), + *Reader.getContext()); + CD->setNextClassCategory(cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++]))); + CD->setHasSynthBitfield(Record[Idx++]); + CD->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + CD->setCategoryNameLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); +} + +void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) { + VisitNamedDecl(CAD); + CAD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++]))); +} + +void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { + VisitNamedDecl(D); + D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + D->setType(Reader.GetTypeSourceInfo(Cursor, 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(Record, Idx).getObjCSelector()); + D->setSetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector()); + D->setGetterMethodDecl( + cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++]))); + D->setSetterMethodDecl( + cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++]))); + D->setPropertyIvarDecl( + cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++]))); +} + +void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) { + VisitObjCContainerDecl(D); + D->setClassInterface( + cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++]))); +} + +void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { + VisitObjCImplDecl(D); + D->setIdentifier(Reader.GetIdentifierInfo(Record, Idx)); +} + +void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { + VisitObjCImplDecl(D); + D->setSuperClass( + cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++]))); + llvm::tie(D->IvarInitializers, D->NumIvarInitializers) + = Reader.ReadCXXBaseOrMemberInitializers(Cursor, Record, Idx); + D->setHasSynthBitfield(Record[Idx++]); +} + + +void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { + VisitDecl(D); + D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++])); + D->setPropertyDecl( + cast_or_null<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++]))); + D->setPropertyIvarDecl( + cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++]))); + D->setGetterCXXConstructor(Reader.ReadExpr(Cursor)); + D->setSetterCXXAssignment(Reader.ReadExpr(Cursor)); +} + +void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) { + VisitDeclaratorDecl(FD); + FD->setMutable(Record[Idx++]); + if (Record[Idx++]) + FD->setBitWidth(Reader.ReadExpr(Cursor)); + if (!FD->getDeclName()) { + FieldDecl *Tmpl = cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++])); + if (Tmpl) + Reader.getContext()->setInstantiatedFromUnnamedFieldDecl(FD, Tmpl); + } +} + +void ASTDeclReader::VisitVarDecl(VarDecl *VD) { + VisitDeclaratorDecl(VD); + VD->setStorageClass((StorageClass)Record[Idx++]); + VD->setStorageClassAsWritten((StorageClass)Record[Idx++]); + VD->setThreadSpecified(Record[Idx++]); + VD->setCXXDirectInitializer(Record[Idx++]); + VD->setExceptionVariable(Record[Idx++]); + VD->setNRVOVariable(Record[Idx++]); + VisitRedeclarable(VD); + if (Record[Idx++]) + VD->setInit(Reader.ReadExpr(Cursor)); + + if (Record[Idx++]) { // HasMemberSpecializationInfo. + VarDecl *Tmpl = cast<VarDecl>(Reader.GetDecl(Record[Idx++])); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + SourceLocation POI = Reader.ReadSourceLocation(Record, Idx); + Reader.getContext()->setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI); + } +} + +void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) { + VisitVarDecl(PD); +} + +void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) { + VisitVarDecl(PD); + PD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]); + PD->setHasInheritedDefaultArg(Record[Idx++]); + if (Record[Idx++]) // hasUninstantiatedDefaultArg. + PD->setUninstantiatedDefaultArg(Reader.ReadExpr(Cursor)); +} + +void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) { + VisitDecl(AD); + AD->setAsmString(cast<StringLiteral>(Reader.ReadExpr(Cursor))); +} + +void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) { + VisitDecl(BD); + BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadStmt(Cursor))); + BD->setSignatureAsWritten(Reader.GetTypeSourceInfo(Cursor, Record, Idx)); + unsigned NumParams = Record[Idx++]; + llvm::SmallVector<ParmVarDecl *, 16> Params; + Params.reserve(NumParams); + for (unsigned I = 0; I != NumParams; ++I) + Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++]))); + BD->setParams(Params.data(), NumParams); +} + +void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) { + VisitDecl(D); + D->setLanguage((LinkageSpecDecl::LanguageIDs)Record[Idx++]); + D->setHasBraces(Record[Idx++]); +} + +void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) { + VisitNamedDecl(D); + D->setLBracLoc(Reader.ReadSourceLocation(Record, Idx)); + D->setRBracLoc(Reader.ReadSourceLocation(Record, Idx)); + D->setNextNamespace( + cast_or_null<NamespaceDecl>(Reader.GetDecl(Record[Idx++]))); + + bool IsOriginal = Record[Idx++]; + D->OrigOrAnonNamespace.setInt(IsOriginal); + D->OrigOrAnonNamespace.setPointer( + cast_or_null<NamespaceDecl>(Reader.GetDecl(Record[Idx++]))); +} + +void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { + VisitNamedDecl(D); + D->NamespaceLoc = Reader.ReadSourceLocation(Record, Idx); + D->setQualifierRange(Reader.ReadSourceRange(Record, Idx)); + D->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx)); + D->IdentLoc = Reader.ReadSourceLocation(Record, Idx); + D->Namespace = cast<NamedDecl>(Reader.GetDecl(Record[Idx++])); +} + +void ASTDeclReader::VisitUsingDecl(UsingDecl *D) { + VisitNamedDecl(D); + D->setUsingLocation(Reader.ReadSourceLocation(Record, Idx)); + D->setNestedNameRange(Reader.ReadSourceRange(Record, Idx)); + D->setTargetNestedNameDecl(Reader.ReadNestedNameSpecifier(Record, Idx)); + // FIXME: read the DNLoc component. + + // FIXME: It would probably be more efficient to read these into a vector + // and then re-cosntruct the shadow decl set over that vector since it + // would avoid existence checks. + unsigned NumShadows = Record[Idx++]; + for(unsigned I = 0; I != NumShadows; ++I) { + // Avoid invariant checking of UsingDecl::addShadowDecl, the decl may still + // be initializing. + D->Shadows.insert(cast<UsingShadowDecl>(Reader.GetDecl(Record[Idx++]))); + } + D->setTypeName(Record[Idx++]); + NamedDecl *Pattern = cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++])); + if (Pattern) + Reader.getContext()->setInstantiatedFromUsingDecl(D, Pattern); +} + +void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) { + VisitNamedDecl(D); + D->setTargetDecl(cast<NamedDecl>(Reader.GetDecl(Record[Idx++]))); + D->setUsingDecl(cast<UsingDecl>(Reader.GetDecl(Record[Idx++]))); + UsingShadowDecl *Pattern + = cast_or_null<UsingShadowDecl>(Reader.GetDecl(Record[Idx++])); + if (Pattern) + Reader.getContext()->setInstantiatedFromUsingShadowDecl(D, Pattern); +} + +void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { + VisitNamedDecl(D); + D->UsingLoc = Reader.ReadSourceLocation(Record, Idx); + D->NamespaceLoc = Reader.ReadSourceLocation(Record, Idx); + D->QualifierRange = Reader.ReadSourceRange(Record, Idx); + D->Qualifier = Reader.ReadNestedNameSpecifier(Record, Idx); + D->NominatedNamespace = cast<NamedDecl>(Reader.GetDecl(Record[Idx++])); + D->CommonAncestor = cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])); +} + +void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { + VisitValueDecl(D); + D->setTargetNestedNameRange(Reader.ReadSourceRange(Record, Idx)); + D->setUsingLoc(Reader.ReadSourceLocation(Record, Idx)); + D->setTargetNestedNameSpecifier(Reader.ReadNestedNameSpecifier(Record, Idx)); + // FIXME: read the DNLoc component. +} + +void ASTDeclReader::VisitUnresolvedUsingTypenameDecl( + UnresolvedUsingTypenameDecl *D) { + VisitTypeDecl(D); + D->TargetNestedNameRange = Reader.ReadSourceRange(Record, Idx); + D->UsingLocation = Reader.ReadSourceLocation(Record, Idx); + D->TypenameLocation = Reader.ReadSourceLocation(Record, Idx); + D->TargetNestedNameSpecifier = Reader.ReadNestedNameSpecifier(Record, Idx); +} + +void ASTDeclReader::VisitCXXRecordDecl(CXXRecordDecl *D) { + ASTContext &C = *Reader.getContext(); + + // We need to allocate the DefinitionData struct ahead of VisitRecordDecl + // so that the other CXXRecordDecls can get a pointer even when the owner + // is still initializing. + bool OwnsDefinitionData = false; + enum DataOwnership { Data_NoDefData, Data_Owner, Data_NotOwner }; + switch ((DataOwnership)Record[Idx++]) { + default: + assert(0 && "Out of sync with ASTDeclWriter or messed up reading"); + case Data_NoDefData: + break; + case Data_Owner: + OwnsDefinitionData = true; + D->DefinitionData = new (C) struct CXXRecordDecl::DefinitionData(D); + break; + case Data_NotOwner: + D->DefinitionData + = cast<CXXRecordDecl>(Reader.GetDecl(Record[Idx++]))->DefinitionData; + break; + } + + VisitRecordDecl(D); + + if (OwnsDefinitionData) { + assert(D->DefinitionData); + struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData; + + Data.UserDeclaredConstructor = Record[Idx++]; + Data.UserDeclaredCopyConstructor = Record[Idx++]; + Data.UserDeclaredCopyAssignment = 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.HasTrivialConstructor = Record[Idx++]; + Data.HasTrivialCopyConstructor = Record[Idx++]; + Data.HasTrivialCopyAssignment = Record[Idx++]; + Data.HasTrivialDestructor = Record[Idx++]; + Data.ComputedVisibleConversions = Record[Idx++]; + Data.DeclaredDefaultConstructor = Record[Idx++]; + Data.DeclaredCopyConstructor = Record[Idx++]; + Data.DeclaredCopyAssignment = Record[Idx++]; + Data.DeclaredDestructor = Record[Idx++]; + + // setBases() is unsuitable since it may try to iterate the bases of an + // uninitialized base. + Data.NumBases = Record[Idx++]; + Data.Bases = new(C) CXXBaseSpecifier [Data.NumBases]; + for (unsigned i = 0; i != Data.NumBases; ++i) + Data.Bases[i] = Reader.ReadCXXBaseSpecifier(Cursor, Record, Idx); + + // FIXME: Make VBases lazily computed when needed to avoid storing them. + Data.NumVBases = Record[Idx++]; + Data.VBases = new(C) CXXBaseSpecifier [Data.NumVBases]; + for (unsigned i = 0; i != Data.NumVBases; ++i) + Data.VBases[i] = Reader.ReadCXXBaseSpecifier(Cursor, Record, Idx); + + Reader.ReadUnresolvedSet(Data.Conversions, Record, Idx); + Reader.ReadUnresolvedSet(Data.VisibleConversions, Record, Idx); + assert(Data.Definition && "Data.Definition should be already set!"); + Data.FirstFriend + = cast_or_null<FriendDecl>(Reader.GetDecl(Record[Idx++])); + } + + enum CXXRecKind { + CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization + }; + switch ((CXXRecKind)Record[Idx++]) { + default: + assert(false && "Out of sync with ASTDeclWriter::VisitCXXRecordDecl?"); + case CXXRecNotTemplate: + break; + case CXXRecTemplate: + D->setDescribedClassTemplate( + cast<ClassTemplateDecl>(Reader.GetDecl(Record[Idx++]))); + break; + case CXXRecMemberSpecialization: { + CXXRecordDecl *RD = cast<CXXRecordDecl>(Reader.GetDecl(Record[Idx++])); + TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++]; + SourceLocation POI = Reader.ReadSourceLocation(Record, Idx); + D->setInstantiationOfMemberClass(RD, TSK); + D->getMemberSpecializationInfo()->setPointOfInstantiation(POI); + break; + } + } +} + +void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) { + VisitFunctionDecl(D); + unsigned NumOverridenMethods = Record[Idx++]; + while (NumOverridenMethods--) { + CXXMethodDecl *MD = cast<CXXMethodDecl>(Reader.GetDecl(Record[Idx++])); + // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod, + // MD may be initializing. + Reader.getContext()->addOverriddenMethod(D, MD); + } +} + +void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) { + VisitCXXMethodDecl(D); + + D->IsExplicitSpecified = Record[Idx++]; + D->ImplicitlyDefined = Record[Idx++]; + llvm::tie(D->BaseOrMemberInitializers, D->NumBaseOrMemberInitializers) + = Reader.ReadCXXBaseOrMemberInitializers(Cursor, Record, Idx); +} + +void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) { + VisitCXXMethodDecl(D); + + D->ImplicitlyDefined = Record[Idx++]; + D->OperatorDelete = cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++])); +} + +void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) { + VisitCXXMethodDecl(D); + D->IsExplicitSpecified = Record[Idx++]; +} + +void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) { + VisitDecl(D); + D->setColonLoc(Reader.ReadSourceLocation(Record, Idx)); +} + +void ASTDeclReader::VisitFriendDecl(FriendDecl *D) { + VisitDecl(D); + if (Record[Idx++]) + D->Friend = Reader.GetTypeSourceInfo(Cursor, Record, Idx); + else + D->Friend = cast<NamedDecl>(Reader.GetDecl(Record[Idx++])); + D->NextFriend = cast_or_null<FriendDecl>(Reader.GetDecl(Record[Idx++])); + D->FriendLoc = Reader.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(Record, Idx); + if (Record[Idx++]) // HasFriendDecl + D->Friend = cast<NamedDecl>(Reader.GetDecl(Record[Idx++])); + else + D->Friend = Reader.GetTypeSourceInfo(Cursor, Record, Idx); + D->FriendLoc = Reader.ReadSourceLocation(Record, Idx); +} + +void ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) { + VisitNamedDecl(D); + + NamedDecl *TemplatedDecl + = cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++])); + TemplateParameterList* TemplateParams + = Reader.ReadTemplateParameterList(Record, Idx); + D->init(TemplatedDecl, TemplateParams); +} + +void ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { + VisitTemplateDecl(D); + + D->IdentifierNamespace = Record[Idx++]; + RedeclarableTemplateDecl *PrevDecl = + cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(Record[Idx++])); + assert((PrevDecl == 0 || PrevDecl->getKind() == D->getKind()) && + "PrevDecl kind mismatch"); + if (PrevDecl) + D->CommonOrPrev = PrevDecl; + if (PrevDecl == 0) { + if (RedeclarableTemplateDecl *RTD + = cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(Record[Idx++]))) { + assert(RTD->getKind() == D->getKind() && + "InstantiatedFromMemberTemplate kind mismatch"); + D->setInstantiatedFromMemberTemplateImpl(RTD); + if (Record[Idx++]) + D->setMemberSpecialization(); + } + + RedeclarableTemplateDecl *LatestDecl = + cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(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()) { + Decl *NewLatest = Reader.GetDecl(I->second); + assert((LatestDecl->getLocation().isInvalid() || + NewLatest->getLocation().isInvalid() || + Reader.SourceMgr.isBeforeInTranslationUnit( + LatestDecl->getLocation(), + NewLatest->getLocation())) && + "The new latest is supposed to come after the previous latest"); + LatestDecl = cast<RedeclarableTemplateDecl>(NewLatest); + } + + assert(LatestDecl->getKind() == D->getKind() && "Latest kind mismatch"); + D->getCommonPtr()->Latest = LatestDecl; + } +} + +void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) { + VisitRedeclarableTemplateDecl(D); + + if (D->getPreviousDeclaration() == 0) { + // This ClassTemplateDecl owns a CommonPtr; read it. + + // FoldingSets are filled in VisitClassTemplateSpecializationDecl. + unsigned size = Record[Idx++]; + while (size--) + cast<ClassTemplateSpecializationDecl>(Reader.GetDecl(Record[Idx++])); + + size = Record[Idx++]; + while (size--) + cast<ClassTemplatePartialSpecializationDecl>( + Reader.GetDecl(Record[Idx++])); + + // InjectedClassNameType is computed. + } +} + +void ASTDeclReader::VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D) { + VisitCXXRecordDecl(D); + + if (Decl *InstD = Reader.GetDecl(Record[Idx++])) { + if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) { + D->setInstantiationOf(CTD); + } else { + llvm::SmallVector<TemplateArgument, 8> TemplArgs; + Reader.ReadTemplateArgumentList(TemplArgs, Cursor, Record, Idx); + D->setInstantiationOf(cast<ClassTemplatePartialSpecializationDecl>(InstD), + TemplArgs.data(), TemplArgs.size()); + } + } + + // Explicit info. + if (TypeSourceInfo *TyInfo = Reader.GetTypeSourceInfo(Cursor, Record, Idx)) { + D->setTypeAsWritten(TyInfo); + D->setExternLoc(Reader.ReadSourceLocation(Record, Idx)); + D->setTemplateKeywordLoc(Reader.ReadSourceLocation(Record, Idx)); + } + + llvm::SmallVector<TemplateArgument, 8> TemplArgs; + Reader.ReadTemplateArgumentList(TemplArgs, Cursor, Record, Idx); + D->initTemplateArgs(TemplArgs.data(), TemplArgs.size()); + SourceLocation POI = Reader.ReadSourceLocation(Record, Idx); + if (POI.isValid()) + D->setPointOfInstantiation(POI); + D->setSpecializationKind((TemplateSpecializationKind)Record[Idx++]); + + if (D->isCanonicalDecl()) { // It's kept in the folding set. + ClassTemplateDecl *CanonPattern + = cast<ClassTemplateDecl>(Reader.GetDecl(Record[Idx++])); + if (ClassTemplatePartialSpecializationDecl *Partial + = dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) { + CanonPattern->getPartialSpecializations().InsertNode(Partial); + } else { + CanonPattern->getSpecializations().InsertNode(D); + } + } +} + +void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl( + ClassTemplatePartialSpecializationDecl *D) { + VisitClassTemplateSpecializationDecl(D); + + D->initTemplateParameters(Reader.ReadTemplateParameterList(Record, Idx)); + + TemplateArgumentListInfo ArgInfos; + unsigned NumArgs = Record[Idx++]; + while (NumArgs--) + ArgInfos.addArgument(Reader.ReadTemplateArgumentLoc(Cursor, Record, Idx)); + D->initTemplateArgsAsWritten(ArgInfos); + + D->setSequenceNumber(Record[Idx++]); + + // These are read/set from/to the first declaration. + if (D->getPreviousDeclaration() == 0) { + D->setInstantiatedFromMember( + cast_or_null<ClassTemplatePartialSpecializationDecl>( + Reader.GetDecl(Record[Idx++]))); + if (Record[Idx++]) + D->setMemberSpecialization(); + } +} + +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 + // through the specialized FunctionDecl's setFunctionTemplateSpecialization. + unsigned NumSpecs = Record[Idx++]; + while (NumSpecs--) + Reader.GetDecl(Record[Idx++]); + } +} + +void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { + VisitTypeDecl(D); + + D->setDeclaredWithTypename(Record[Idx++]); + D->setParameterPack(Record[Idx++]); + + bool Inherited = Record[Idx++]; + TypeSourceInfo *DefArg = Reader.GetTypeSourceInfo(Cursor, Record, Idx); + D->setDefaultArgument(DefArg, Inherited); +} + +void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { + VisitVarDecl(D); + // TemplateParmPosition. + D->setDepth(Record[Idx++]); + D->setPosition(Record[Idx++]); + // Rest of NonTypeTemplateParmDecl. + if (Record[Idx++]) { + Expr *DefArg = Reader.ReadExpr(Cursor); + 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(Cursor, Record, Idx); + bool IsInherited = Record[Idx++]; + D->setDefaultArgument(Arg, IsInherited); +} + +void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) { + VisitDecl(D); + D->AssertExpr = Reader.ReadExpr(Cursor); + D->Message = cast<StringLiteral>(Reader.ReadExpr(Cursor)); +} + +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: + assert(0 && "Out of sync with ASTDeclWriter::VisitRedeclarable or messed up" + " reading"); + case NoRedeclaration: + break; + case PointsToPrevious: + D->RedeclLink = typename Redeclarable<T>::PreviousDeclLink( + cast_or_null<T>(Reader.GetDecl(Record[Idx++]))); + break; + case PointsToLatest: + D->RedeclLink = typename Redeclarable<T>::LatestDeclLink( + cast_or_null<T>(Reader.GetDecl(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); + assert((D->getMostRecentDeclaration()->getLocation().isInvalid() || + NewLatest->getLocation().isInvalid() || + Reader.SourceMgr.isBeforeInTranslationUnit( + D->getMostRecentDeclaration()->getLocation(), + NewLatest->getLocation())) && + "The new latest is supposed to come after the previous latest"); + D->RedeclLink + = typename Redeclarable<T>::LatestDeclLink(cast_or_null<T>(NewLatest)); + } +} + +//===----------------------------------------------------------------------===// +// Attribute Reading +//===----------------------------------------------------------------------===// + +/// \brief Reads attributes from the current stream position. +void ASTReader::ReadAttributes(llvm::BitstreamCursor &DeclsCursor, + AttrVec &Attrs) { + unsigned Code = DeclsCursor.ReadCode(); + assert(Code == llvm::bitc::UNABBREV_RECORD && + "Expected unabbreviated record"); (void)Code; + + RecordData Record; + unsigned Idx = 0; + unsigned RecCode = DeclsCursor.ReadRecord(Code, Record); + assert(RecCode == DECL_ATTR && "Expected attribute record"); + (void)RecCode; + + while (Idx < Record.size()) { + Attr *New = 0; + attr::Kind Kind = (attr::Kind)Record[Idx++]; + SourceLocation Loc = SourceLocation::getFromRawEncoding(Record[Idx++]); + bool isInherited = Record[Idx++]; + +#include "clang/Serialization/AttrPCHRead.inc" + + assert(New && "Unable to decode attribute?"); + New->setInherited(isInherited); + 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) { + if (isa<FileScopeAsmDecl>(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->isThisDeclarationADefinition(); + return isa<ObjCProtocolDecl>(D) || isa<ObjCImplementationDecl>(D); +} + +/// \brief Get the correct cursor and offset for loading a type. +ASTReader::RecordLocation +ASTReader::DeclCursorForIndex(unsigned Index, DeclID ID) { + // See if there's an override. + DeclReplacementMap::iterator It = ReplacedDecls.find(ID); + if (It != ReplacedDecls.end()) + return RecordLocation(&It->second.first->DeclsCursor, It->second.second); + + PerFileData *F = 0; + for (unsigned I = 0, N = Chain.size(); I != N; ++I) { + F = Chain[N - I - 1]; + if (Index < F->LocalNumDecls) + break; + Index -= F->LocalNumDecls; + } + assert(F && F->LocalNumDecls > Index && "Broken chain"); + return RecordLocation(&F->DeclsCursor, F->DeclOffsets[Index]); +} + +/// \brief Read the declaration at the given offset from the AST file. +Decl *ASTReader::ReadDeclRecord(unsigned Index, DeclID ID) { + RecordLocation Loc = DeclCursorForIndex(Index, ID); + llvm::BitstreamCursor &DeclsCursor = *Loc.first; + // 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.second); + RecordData Record; + unsigned Code = DeclsCursor.ReadCode(); + unsigned Idx = 0; + ASTDeclReader Reader(*this, DeclsCursor, ID, Record, Idx); + + Decl *D = 0; + switch ((DeclCode)DeclsCursor.ReadRecord(Code, Record)) { + case DECL_ATTR: + case DECL_CONTEXT_LEXICAL: + case DECL_CONTEXT_VISIBLE: + assert(false && "Record cannot be de-serialized with ReadDeclRecord"); + break; + case DECL_TRANSLATION_UNIT: + assert(Index == 0 && "Translation unit must be at index 0"); + D = Context->getTranslationUnitDecl(); + break; + case DECL_TYPEDEF: + D = TypedefDecl::Create(*Context, 0, 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(), DeclarationName(), + QualType(), 0); + break; + case DECL_LINKAGE_SPEC: + D = LinkageSpecDecl::Create(*Context, 0, SourceLocation(), + (LinkageSpecDecl::LanguageIDs)0, + false); + break; + case DECL_NAMESPACE: + D = NamespaceDecl::Create(*Context, 0, SourceLocation(), 0); + break; + case DECL_NAMESPACE_ALIAS: + D = NamespaceAliasDecl::Create(*Context, 0, SourceLocation(), + SourceLocation(), 0, SourceRange(), 0, + SourceLocation(), 0); + break; + case DECL_USING: + D = UsingDecl::Create(*Context, 0, SourceRange(), SourceLocation(), + 0, 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(), SourceRange(), 0, + SourceLocation(), 0, 0); + break; + case DECL_UNRESOLVED_USING_VALUE: + D = UnresolvedUsingValueDecl::Create(*Context, 0, SourceLocation(), + SourceRange(), 0, + DeclarationNameInfo()); + break; + case DECL_UNRESOLVED_USING_TYPENAME: + D = UnresolvedUsingTypenameDecl::Create(*Context, 0, SourceLocation(), + SourceLocation(), SourceRange(), + 0, SourceLocation(), + DeclarationName()); + break; + case DECL_CXX_RECORD: + D = CXXRecordDecl::Create(*Context, Decl::EmptyShell()); + break; + case DECL_CXX_METHOD: + D = CXXMethodDecl::Create(*Context, 0, DeclarationNameInfo(), + QualType(), 0); + 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, AS_none, 0, SourceLocation(), + SourceLocation()); + 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, 0, SourceLocation(), + DeclarationName(), 0, 0, 0); + 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_FUNCTION_TEMPLATE: + D = FunctionTemplateDecl::Create(*Context, 0, SourceLocation(), + DeclarationName(), 0, 0); + 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(), 0,0,0, + QualType(),0); + break; + case DECL_TEMPLATE_TEMPLATE_PARM: + D = TemplateTemplateParmDecl::Create(*Context, 0, SourceLocation(),0,0,0,0); + break; + case DECL_STATIC_ASSERT: + D = StaticAssertDecl::Create(*Context, 0, SourceLocation(), 0, 0); + 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(), 0, QualType(), 0, + ObjCIvarDecl::None); + break; + case DECL_OBJC_PROTOCOL: + D = ObjCProtocolDecl::Create(*Context, 0, SourceLocation(), 0); + break; + case DECL_OBJC_AT_DEFS_FIELD: + D = ObjCAtDefsFieldDecl::Create(*Context, 0, 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, 0, SourceLocation(), + SourceLocation(), SourceLocation(), 0); + break; + case DECL_OBJC_CATEGORY_IMPL: + D = ObjCCategoryImplDecl::Create(*Context, 0, SourceLocation(), 0, 0); + break; + case DECL_OBJC_IMPLEMENTATION: + D = ObjCImplementationDecl::Create(*Context, 0, SourceLocation(), 0, 0); + 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); + break; + case DECL_FIELD: + D = FieldDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0, 0, + false); + break; + case DECL_VAR: + D = VarDecl::Create(*Context, 0, 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(), 0, QualType(), 0, + SC_None, SC_None, 0); + break; + case DECL_FILE_SCOPE_ASM: + D = FileScopeAsmDecl::Create(*Context, 0, SourceLocation(), 0); + break; + case DECL_BLOCK: + D = BlockDecl::Create(*Context, 0, SourceLocation()); + break; + } + + 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) { + DC->setHasExternalLexicalStorage(Offsets.first != 0); + DC->setHasExternalVisibleStorage(Offsets.second != 0); + DeclContextInfo Info; + if (ReadDeclContextStorage(DeclsCursor, Offsets, Info)) + return 0; + DeclContextInfos &Infos = DeclContextOffsets[DC]; + // Reading the TU will happen after reading its lexical update blocks, + // so we need to make sure we insert in front. For all other contexts, + // the vector is empty here anyway, so there's no loss in efficiency. + Infos.insert(Infos.begin(), Info); + + // Now add the pending visible updates for this decl context, if it has + // any. + DeclContextVisibleUpdatesPending::iterator I = + PendingVisibleUpdates.find(ID); + if (I != PendingVisibleUpdates.end()) { + DeclContextVisibleUpdates &U = I->second; + Info.LexicalDecls = 0; + Info.NumLexicalDecls = 0; + for (DeclContextVisibleUpdates::iterator UI = U.begin(), UE = U.end(); + UI != UE; ++UI) { + Info.NameLookupTableData = *UI; + Infos.push_back(Info); + } + PendingVisibleUpdates.erase(I); + } + } + } + + // If this is a template, read additional specializations that may be in a + // different part of the chain. + if (isa<RedeclarableTemplateDecl>(D)) { + AdditionalTemplateSpecializationsMap::iterator F = + AdditionalTemplateSpecializationsPending.find(ID); + if (F != AdditionalTemplateSpecializationsPending.end()) { + for (AdditionalTemplateSpecializations::iterator I = F->second.begin(), + E = F->second.end(); + I != E; ++I) + GetDecl(*I); + AdditionalTemplateSpecializationsPending.erase(F); + } + } + assert(Idx == Record.size()); + + // 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; +} |