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llvm / clang / refs/heads/release_29 / . / lib / Serialization / ASTReaderDecl.cpp
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//===--- 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/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;
ASTReader::PerFileData &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);
}
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, ASTReader::PerFileData &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, const RecordData &Record);
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 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 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 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).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 = Record[Idx++];
LexicalDeclContextIDForTemplateParmDecl = Record[Idx++];
D->setDeclContext(Reader.getContext()->getTranslationUnitDecl());
} else {
D->setDeclContext(cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
D->setLexicalDeclContext(
cast_or_null<DeclContext>(Reader.GetDecl(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->setAccess((AccessSpecifier)Record[Idx++]);
D->setPCHLevel(Record[Idx++] + (F.Type <= ASTReader::PCH));
}
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);
TD->setLocStart(ReadSourceLocation(Record, Idx));
// Delay type reading until after we have fully initialized the decl.
TypeIDForTypeDecl = Record[Idx++];
}
void ASTDeclReader::VisitTypedefDecl(TypedefDecl *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->setDefinition(Record[Idx++]);
TD->setEmbeddedInDeclarator(Record[Idx++]);
TD->setRBraceLoc(ReadSourceLocation(Record, Idx));
if (Record[Idx++]) { // hasExtInfo
TagDecl::ExtInfo *Info = new (*Reader.getContext()) TagDecl::ExtInfo();
ReadQualifierInfo(*Info, Record, Idx);
TD->TypedefDeclOrQualifier = Info;
} else
TD->setTypedefForAnonDecl(
cast_or_null<TypedefDecl>(Reader.GetDecl(Record[Idx++])));
}
void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
VisitTagDecl(ED);
if (TypeSourceInfo *TI = Reader.GetTypeSourceInfo(F, Record, Idx))
ED->setIntegerTypeSourceInfo(TI);
else
ED->setIntegerType(Reader.GetType(Record[Idx++]));
ED->setPromotionType(Reader.GetType(Record[Idx++]));
ED->setNumPositiveBits(Record[Idx++]);
ED->setNumNegativeBits(Record[Idx++]);
ED->IsScoped = Record[Idx++];
ED->IsScopedUsingClassTag = Record[Idx++];
ED->IsFixed = 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(F));
ECD->setInitVal(Reader.ReadAPSInt(Record, Idx));
}
void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
VisitValueDecl(DD);
if (Record[Idx++]) { // hasExtInfo
DeclaratorDecl::ExtInfo *Info
= new (*Reader.getContext()) DeclaratorDecl::ExtInfo();
ReadQualifierInfo(*Info, Record, Idx);
Info->TInfo = GetTypeSourceInfo(Record, Idx);
DD->DeclInfo = Info;
} else
DD->DeclInfo = GetTypeSourceInfo(Record, Idx);
}
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: 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 = ReadSourceLocation(Record, Idx);
FD->setInstantiationOfMemberFunction(*Reader.getContext(), 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, F, 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(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
= new (C) TemplateArgumentListInfo(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,
TemplArgsInfo, 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
= cast<FunctionTemplateDecl>(Reader.GetDecl(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(cast<NamedDecl>(Reader.GetDecl(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->HasImplicitReturnZero = Record[Idx++];
FD->EndRangeLoc = ReadSourceLocation(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(*Reader.getContext(), 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(F));
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(GetTypeSourceInfo(Record, Idx));
MD->setEndLoc(ReadSourceLocation(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 = ReadSourceLocation(Record, Idx);
SourceLocation B = ReadSourceLocation(Record, Idx);
CD->setAtEndRange(SourceRange(A, B));
}
void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
VisitObjCContainerDecl(ID);
ID->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtrOrNull());
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(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(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(ReadSourceLocation(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++];
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(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);
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(ReadSourceLocation(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(ReadSourceLocation(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(ReadSourceLocation(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(ReadSourceLocation(Record, Idx));
CD->setCategoryNameLoc(ReadSourceLocation(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(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(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.ReadCXXCtorInitializers(F, Record, Idx);
D->setHasSynthBitfield(Record[Idx++]);
}
void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
VisitDecl(D);
D->setAtLoc(ReadSourceLocation(Record, Idx));
D->setPropertyDecl(
cast_or_null<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
D->PropertyIvarDecl =
cast_or_null<ObjCIvarDecl>(Reader.GetDecl(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++]);
if (Record[Idx++])
FD->setBitWidth(Reader.ReadExpr(F));
if (!FD->getDeclName()) {
FieldDecl *Tmpl = cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++]));
if (Tmpl)
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] = cast<NamedDecl>(Reader.GetDecl(Record[Idx++]));
}
void ASTDeclReader::VisitVarDecl(VarDecl *VD) {
VisitDeclaratorDecl(VD);
VisitRedeclarable(VD);
VD->SClass = (StorageClass)Record[Idx++];
VD->setStorageClassAsWritten((StorageClass)Record[Idx++]);
VD->setThreadSpecified(Record[Idx++]);
VD->setCXXDirectInitializer(Record[Idx++]);
VD->setExceptionVariable(Record[Idx++]);
VD->setNRVOVariable(Record[Idx++]);
if (Record[Idx++])
VD->setInit(Reader.ReadExpr(F));
if (Record[Idx++]) { // HasMemberSpecializationInfo.
VarDecl *Tmpl = cast<VarDecl>(Reader.GetDecl(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);
PD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
PD->setHasInheritedDefaultArg(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++];
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);
bool capturesCXXThis = Record[Idx++];
unsigned numCaptures = Record[Idx++];
llvm::SmallVector<BlockDecl::Capture, 16> captures;
captures.reserve(numCaptures);
for (unsigned i = 0; i != numCaptures; ++i) {
VarDecl *decl = cast<VarDecl>(Reader.GetDecl(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->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->LBracLoc = ReadSourceLocation(Record, Idx);
D->RBracLoc = ReadSourceLocation(Record, Idx);
D->NextNamespace = 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 = ReadSourceLocation(Record, Idx);
D->IdentLoc = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
D->Namespace = cast<NamedDecl>(Reader.GetDecl(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 = cast_or_null<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->UsingOrNextShadow = cast_or_null<NamedDecl>(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 = ReadSourceLocation(Record, Idx);
D->NamespaceLoc = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, 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->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.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++];
Data.NumBases = Record[Idx++];
if (Data.NumBases)
Data.Bases = Reader.GetCXXBaseSpecifiersOffset(Record[Idx++]);
Data.NumVBases = Record[Idx++];
if (Data.NumVBases)
Data.VBases = Reader.GetCXXBaseSpecifiersOffset(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++]));
}
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
= cast_or_null<CXXRecordDecl>(Reader.GetDecl(Record[Idx++]));
InitializeCXXDefinitionData(D, DefinitionDecl, Record, Idx);
ASTContext &C = *Reader.getContext();
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->TemplateOrInstantiation
= cast<ClassTemplateDecl>(Reader.GetDecl(Record[Idx++]));
break;
case CXXRecMemberSpecialization: {
CXXRecordDecl *RD = cast<CXXRecordDecl>(Reader.GetDecl(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->IsDefinition) {
CXXMethodDecl *Key
= cast_or_null<CXXMethodDecl>(Reader.GetDecl(Record[Idx++]));
if (Key)
C.KeyFunctions[D] = Key;
}
}
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->CtorInitializers, D->NumCtorInitializers)
= Reader.ReadCXXCtorInitializers(F, 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(ReadSourceLocation(Record, Idx));
}
void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
VisitDecl(D);
if (Record[Idx++])
D->Friend = GetTypeSourceInfo(Record, Idx);
else
D->Friend = cast<NamedDecl>(Reader.GetDecl(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 = cast<NamedDecl>(Reader.GetDecl(Record[Idx++]));
else
D->Friend = GetTypeSourceInfo(Record, Idx);
D->FriendLoc = ReadSourceLocation(Record, Idx);
}
void ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
VisitNamedDecl(D);
NamedDecl *TemplatedDecl
= cast_or_null<NamedDecl>(Reader.GetDecl(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 = Record[Idx++];
DeclID FirstDeclID = PreviousDeclID ? 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
= 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(
NewLatest->getLocation(),
LatestDecl->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;
}
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.
llvm::SmallVector<serialization::DeclID, 2> SpecIDs;
SpecIDs.push_back(0);
// Specializations.
unsigned Size = Record[Idx++];
SpecIDs[0] += Size;
SpecIDs.append(Record.begin() + Idx, Record.begin() + Idx + Size);
Idx += Size;
// Partial specializations.
Size = Record[Idx++];
SpecIDs[0] += Size;
SpecIDs.append(Record.begin() + Idx, Record.begin() + Idx + Size);
Idx += Size;
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 = Reader.GetDecl(Record[Idx++])) {
if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
D->SpecializedTemplate = CTD;
} else {
llvm::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;
}
llvm::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
= cast<ClassTemplateDecl>(Reader.GetDecl(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(
cast_or_null<ClassTemplatePartialSpecializationDecl>(
Reader.GetDecl(Record[Idx++])));
D->InstantiatedFromMember.setInt(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--)
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 = 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.GetType(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::VisitStaticAssertDecl(StaticAssertDecl *D) {
VisitDecl(D);
D->AssertExpr = Reader.ReadExpr(F);
D->Message = cast<StringLiteral>(Reader.ReadExpr(F));
}
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: {
DeclID PreviousDeclID = Record[Idx++];
DeclID FirstDeclID = 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(
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);
D->RedeclLink
= typename Redeclarable<T>::LatestDeclLink(cast_or_null<T>(NewLatest));
}
}
//===----------------------------------------------------------------------===//
// Attribute Reading
//===----------------------------------------------------------------------===//
/// \brief Reads attributes from the current stream position.
void ASTReader::ReadAttributes(PerFileData &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++];
SourceLocation Loc = ReadSourceLocation(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) {
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, 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, F->DeclOffsets[Index]);
}
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(unsigned Index, DeclID ID) {
RecordLocation Loc = DeclCursorForIndex(Index, 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:
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(), 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,
SourceLocation());
break;
case DECL_LABEL:
D = LabelDecl::Create(*Context, 0, SourceLocation(), 0);
break;
case DECL_NAMESPACE:
D = NamespaceDecl::Create(*Context, 0, 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, 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, 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_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(), 0,0,0,
QualType(), false, 0);
break;
case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK:
D = NonTypeTemplateParmDecl::Create(*Context, 0, 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_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,
SourceLocation());
break;
case DECL_FIELD:
D = FieldDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0, 0,
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(), 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, 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) {
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);
}
}
}
assert(Idx == Record.size());
// 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) {
PerFileData *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!");
Reader.UpdateDecl(D, Record);
}
}
// 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 ASTDeclReader::UpdateDecl(Decl *D, 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 = cast<CXXRecordDecl>(Reader.GetDecl(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.GetDecl(Record[Idx++]));
break;
case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
// It will be added to the template's specializations set when loaded.
Reader.GetDecl(Record[Idx++]);
}
}
}