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gerrit-public.fairphone.software / fp2-dev / platform / external / clang / e9ee382c32a83e9807a2fe4cfd52b5a11169a4b8 / . / 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/Sema/IdentifierResolver.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/SemaDiagnostic.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclVisitor.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Expr.h"
using namespace clang;
using namespace clang::serialization;
//===----------------------------------------------------------------------===//
// Declaration deserialization
//===----------------------------------------------------------------------===//
namespace clang {
class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
ASTReader &Reader;
ModuleFile &F;
llvm::BitstreamCursor &Cursor;
const DeclID ThisDeclID;
const unsigned RawLocation;
typedef ASTReader::RecordData RecordData;
const RecordData &Record;
unsigned &Idx;
TypeID TypeIDForTypeDecl;
DeclID DeclContextIDForTemplateParmDecl;
DeclID LexicalDeclContextIDForTemplateParmDecl;
uint64_t GetCurrentCursorOffset();
SourceLocation ReadSourceLocation(const RecordData &R, unsigned &I) {
return Reader.ReadSourceLocation(F, R, I);
}
SourceRange ReadSourceRange(const RecordData &R, unsigned &I) {
return Reader.ReadSourceRange(F, R, I);
}
TypeSourceInfo *GetTypeSourceInfo(const RecordData &R, unsigned &I) {
return Reader.GetTypeSourceInfo(F, R, I);
}
serialization::DeclID ReadDeclID(const RecordData &R, unsigned &I) {
return Reader.ReadDeclID(F, R, I);
}
Decl *ReadDecl(const RecordData &R, unsigned &I) {
return Reader.ReadDecl(F, R, I);
}
template<typename T>
T *ReadDeclAs(const RecordData &R, unsigned &I) {
return Reader.ReadDeclAs<T>(F, R, I);
}
void ReadQualifierInfo(QualifierInfo &Info,
const RecordData &R, unsigned &I) {
Reader.ReadQualifierInfo(F, Info, R, I);
}
void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name,
const RecordData &R, unsigned &I) {
Reader.ReadDeclarationNameLoc(F, DNLoc, Name, R, I);
}
void ReadDeclarationNameInfo(DeclarationNameInfo &NameInfo,
const RecordData &R, unsigned &I) {
Reader.ReadDeclarationNameInfo(F, NameInfo, R, I);
}
serialization::SubmoduleID readSubmoduleID(const RecordData &R,
unsigned &I) {
if (I >= R.size())
return 0;
return Reader.getGlobalSubmoduleID(F, R[I++]);
}
Module *readModule(const RecordData &R, unsigned &I) {
return Reader.getSubmodule(readSubmoduleID(R, I));
}
void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data,
const RecordData &R, unsigned &I);
/// \brief RAII class used to capture the first ID within a redeclaration
/// chain and to introduce it into the list of pending redeclaration chains
/// on destruction.
///
/// The caller can choose not to introduce this ID into the redeclaration
/// chain by calling \c suppress().
class RedeclarableResult {
ASTReader &Reader;
GlobalDeclID FirstID;
mutable bool Owning;
RedeclarableResult &operator=(RedeclarableResult&); // DO NOT IMPLEMENT
public:
RedeclarableResult(ASTReader &Reader, GlobalDeclID FirstID)
: Reader(Reader), FirstID(FirstID), Owning(true) { }
RedeclarableResult(const RedeclarableResult &Other)
: Reader(Other.Reader), FirstID(Other.FirstID), Owning(Other.Owning)
{
Other.Owning = false;
}
~RedeclarableResult() {
// FIXME: We want to suppress this when the declaration is local to
// a function, since there's no reason to search other AST files
// for redeclarations (they can't exist). However, this is hard to
// do locally because the declaration hasn't necessarily loaded its
// declaration context yet. Also, local externs still have the function
// as their (semantic) declaration context, which is wrong and would
// break this optimize.
if (FirstID && Owning && Reader.PendingDeclChainsKnown.insert(FirstID))
Reader.PendingDeclChains.push_back(FirstID);
}
/// \brief Retrieve the first ID.
GlobalDeclID getFirstID() const { return FirstID; }
/// \brief Do not introduce this declaration ID into the set of pending
/// declaration chains.
void suppress() {
Owning = false;
}
};
/// \brief Class used to capture the result of searching for an existing
/// declaration of a specific kind and name, along with the ability
/// to update the place where this result was found (the declaration
/// chain hanging off an identifier or the DeclContext we searched in)
/// if requested.
class FindExistingResult {
ASTReader &Reader;
NamedDecl *New;
NamedDecl *Existing;
mutable bool AddResult;
FindExistingResult &operator=(FindExistingResult&); // DO NOT IMPLEMENT
public:
FindExistingResult(ASTReader &Reader)
: Reader(Reader), New(0), Existing(0), AddResult(false) { }
FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing)
: Reader(Reader), New(New), Existing(Existing), AddResult(true) { }
FindExistingResult(const FindExistingResult &Other)
: Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
AddResult(Other.AddResult)
{
Other.AddResult = false;
}
~FindExistingResult();
/// \brief Suppress the addition of this result into the known set of
/// names.
void suppress() { AddResult = false; }
operator NamedDecl*() const { return Existing; }
template<typename T>
operator T*() const { return dyn_cast_or_null<T>(Existing); }
};
FindExistingResult findExisting(NamedDecl *D);
public:
ASTDeclReader(ASTReader &Reader, ModuleFile &F,
llvm::BitstreamCursor &Cursor, DeclID thisDeclID,
unsigned RawLocation,
const RecordData &Record, unsigned &Idx)
: Reader(Reader), F(F), Cursor(Cursor), ThisDeclID(thisDeclID),
RawLocation(RawLocation), Record(Record), Idx(Idx),
TypeIDForTypeDecl(0) { }
static void attachPreviousDecl(Decl *D, Decl *previous);
static void attachLatestDecl(Decl *D, Decl *latest);
void Visit(Decl *D);
void UpdateDecl(Decl *D, ModuleFile &ModuleFile,
const RecordData &Record);
static void setNextObjCCategory(ObjCCategoryDecl *Cat,
ObjCCategoryDecl *Next) {
Cat->NextClassCategory = Next;
}
void VisitDecl(Decl *D);
void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
void VisitNamedDecl(NamedDecl *ND);
void VisitLabelDecl(LabelDecl *LD);
void VisitNamespaceDecl(NamespaceDecl *D);
void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
void VisitTypeDecl(TypeDecl *TD);
void VisitTypedefNameDecl(TypedefNameDecl *TD);
void VisitTypedefDecl(TypedefDecl *TD);
void VisitTypeAliasDecl(TypeAliasDecl *TD);
void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
void VisitTagDecl(TagDecl *TD);
void VisitEnumDecl(EnumDecl *ED);
void VisitRecordDecl(RecordDecl *RD);
void VisitCXXRecordDecl(CXXRecordDecl *D);
void VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D);
void VisitClassTemplatePartialSpecializationDecl(
ClassTemplatePartialSpecializationDecl *D);
void VisitClassScopeFunctionSpecializationDecl(
ClassScopeFunctionSpecializationDecl *D);
void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
void VisitValueDecl(ValueDecl *VD);
void VisitEnumConstantDecl(EnumConstantDecl *ECD);
void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
void VisitDeclaratorDecl(DeclaratorDecl *DD);
void VisitFunctionDecl(FunctionDecl *FD);
void VisitCXXMethodDecl(CXXMethodDecl *D);
void VisitCXXConstructorDecl(CXXConstructorDecl *D);
void VisitCXXDestructorDecl(CXXDestructorDecl *D);
void VisitCXXConversionDecl(CXXConversionDecl *D);
void VisitFieldDecl(FieldDecl *FD);
void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
void VisitVarDecl(VarDecl *VD);
void VisitImplicitParamDecl(ImplicitParamDecl *PD);
void VisitParmVarDecl(ParmVarDecl *PD);
void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
void VisitTemplateDecl(TemplateDecl *D);
RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
void VisitClassTemplateDecl(ClassTemplateDecl *D);
void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
void VisitUsingDecl(UsingDecl *D);
void VisitUsingShadowDecl(UsingShadowDecl *D);
void VisitLinkageSpecDecl(LinkageSpecDecl *D);
void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
void VisitImportDecl(ImportDecl *D);
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>
RedeclarableResult VisitRedeclarable(Redeclarable<T> *D);
template<typename T>
void mergeRedeclarable(Redeclarable<T> *D, RedeclarableResult &Redecl);
// 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 VisitObjCCategoryDecl(ObjCCategoryDecl *D);
void VisitObjCImplDecl(ObjCImplDecl *D);
void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
};
}
uint64_t ASTDeclReader::GetCurrentCursorOffset() {
return F.DeclsCursor.GetCurrentBitNo() + F.GlobalBitOffset;
}
void ASTDeclReader::Visit(Decl *D) {
DeclVisitor<ASTDeclReader, void>::Visit(D);
if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
if (DD->DeclInfo) {
DeclaratorDecl::ExtInfo *Info =
DD->DeclInfo.get<DeclaratorDecl::ExtInfo *>();
Info->TInfo =
GetTypeSourceInfo(Record, Idx);
}
else {
DD->DeclInfo = GetTypeSourceInfo(Record, Idx);
}
}
if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) {
// if we have a fully initialized TypeDecl, we can safely read its type now.
TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull());
} else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
// if we have a fully initialized TypeDecl, we can safely read its type now.
ID->TypeForDecl = 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.
DeclContext *SemaDC = cast<DeclContext>(
Reader.GetDecl(DeclContextIDForTemplateParmDecl));
DeclContext *LexicalDC = cast<DeclContext>(
Reader.GetDecl(LexicalDeclContextIDForTemplateParmDecl));
D->setDeclContextsImpl(SemaDC, LexicalDC, Reader.getContext());
}
}
void ASTDeclReader::VisitDecl(Decl *D) {
if (D->isTemplateParameter()) {
// We don't want to deserialize the DeclContext of a template
// parameter immediately, because the template parameter might be
// used in the formulation of its DeclContext. Use the translation
// unit DeclContext as a placeholder.
DeclContextIDForTemplateParmDecl = ReadDeclID(Record, Idx);
LexicalDeclContextIDForTemplateParmDecl = ReadDeclID(Record, Idx);
D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
} else {
DeclContext *SemaDC = ReadDeclAs<DeclContext>(Record, Idx);
DeclContext *LexicalDC = ReadDeclAs<DeclContext>(Record, Idx);
// Avoid calling setLexicalDeclContext() directly because it uses
// Decl::getASTContext() internally which is unsafe during derialization.
D->setDeclContextsImpl(SemaDC, LexicalDC, Reader.getContext());
}
D->setLocation(Reader.ReadSourceLocation(F, RawLocation));
D->setInvalidDecl(Record[Idx++]);
if (Record[Idx++]) { // hasAttrs
AttrVec Attrs;
Reader.ReadAttributes(F, Attrs, Record, Idx);
// Avoid calling setAttrs() directly because it uses Decl::getASTContext()
// internally which is unsafe during derialization.
D->setAttrsImpl(Attrs, Reader.getContext());
}
D->setImplicit(Record[Idx++]);
D->setUsed(Record[Idx++]);
D->setReferenced(Record[Idx++]);
D->setTopLevelDeclInObjCContainer(Record[Idx++]);
D->setAccess((AccessSpecifier)Record[Idx++]);
D->FromASTFile = true;
D->setModulePrivate(Record[Idx++]);
D->Hidden = D->isModulePrivate();
// Determine whether this declaration is part of a (sub)module. If so, it
// may not yet be visible.
if (unsigned SubmoduleID = readSubmoduleID(Record, Idx)) {
// Store the owning submodule ID in the declaration.
D->setOwningModuleID(SubmoduleID);
// Module-private declarations are never visible, so there is no work to do.
if (!D->isModulePrivate()) {
if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
if (Owner->NameVisibility != Module::AllVisible) {
// The owning module is not visible. Mark this declaration as hidden.
D->Hidden = true;
// Note that this declaration was hidden because its owning module is
// not yet visible.
Reader.HiddenNamesMap[Owner].push_back(D);
}
}
}
}
}
void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
llvm_unreachable("Translation units are not serialized");
}
void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) {
VisitDecl(ND);
ND->setDeclName(Reader.ReadDeclarationName(F, Record, Idx));
}
void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) {
VisitNamedDecl(TD);
TD->setLocStart(ReadSourceLocation(Record, Idx));
// Delay type reading until after we have fully initialized the decl.
TypeIDForTypeDecl = Reader.getGlobalTypeID(F, Record[Idx++]);
}
void ASTDeclReader::VisitTypedefNameDecl(TypedefNameDecl *TD) {
RedeclarableResult Redecl = VisitRedeclarable(TD);
VisitTypeDecl(TD);
TD->setTypeSourceInfo(GetTypeSourceInfo(Record, Idx));
mergeRedeclarable(TD, Redecl);
}
void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
VisitTypedefNameDecl(TD);
}
void ASTDeclReader::VisitTypeAliasDecl(TypeAliasDecl *TD) {
VisitTypedefNameDecl(TD);
}
void ASTDeclReader::VisitTagDecl(TagDecl *TD) {
RedeclarableResult Redecl = VisitRedeclarable(TD);
VisitTypeDecl(TD);
TD->IdentifierNamespace = Record[Idx++];
TD->setTagKind((TagDecl::TagKind)Record[Idx++]);
TD->setCompleteDefinition(Record[Idx++]);
TD->setEmbeddedInDeclarator(Record[Idx++]);
TD->setFreeStanding(Record[Idx++]);
TD->setRBraceLoc(ReadSourceLocation(Record, Idx));
if (Record[Idx++]) { // hasExtInfo
TagDecl::ExtInfo *Info = new (Reader.getContext()) TagDecl::ExtInfo();
ReadQualifierInfo(*Info, Record, Idx);
TD->TypedefNameDeclOrQualifier = Info;
} else
TD->setTypedefNameForAnonDecl(ReadDeclAs<TypedefNameDecl>(Record, Idx));
mergeRedeclarable(TD, Redecl);
}
void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
VisitTagDecl(ED);
if (TypeSourceInfo *TI = Reader.GetTypeSourceInfo(F, Record, Idx))
ED->setIntegerTypeSourceInfo(TI);
else
ED->setIntegerType(Reader.readType(F, Record, Idx));
ED->setPromotionType(Reader.readType(F, Record, Idx));
ED->setNumPositiveBits(Record[Idx++]);
ED->setNumNegativeBits(Record[Idx++]);
ED->IsScoped = Record[Idx++];
ED->IsScopedUsingClassTag = Record[Idx++];
ED->IsFixed = Record[Idx++];
ED->setInstantiationOfMemberEnum(ReadDeclAs<EnumDecl>(Record, Idx));
}
void ASTDeclReader::VisitRecordDecl(RecordDecl *RD) {
VisitTagDecl(RD);
RD->setHasFlexibleArrayMember(Record[Idx++]);
RD->setAnonymousStructOrUnion(Record[Idx++]);
RD->setHasObjectMember(Record[Idx++]);
}
void ASTDeclReader::VisitValueDecl(ValueDecl *VD) {
VisitNamedDecl(VD);
VD->setType(Reader.readType(F, Record, Idx));
}
void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
VisitValueDecl(ECD);
if (Record[Idx++])
ECD->setInitExpr(Reader.ReadExpr(F));
ECD->setInitVal(Reader.ReadAPSInt(Record, Idx));
}
void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
VisitValueDecl(DD);
DD->setInnerLocStart(ReadSourceLocation(Record, Idx));
if (Record[Idx++]) { // hasExtInfo
DeclaratorDecl::ExtInfo *Info
= new (Reader.getContext()) DeclaratorDecl::ExtInfo();
ReadQualifierInfo(*Info, Record, Idx);
DD->DeclInfo = Info;
}
}
void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
RedeclarableResult Redecl = VisitRedeclarable(FD);
VisitDeclaratorDecl(FD);
ReadDeclarationNameLoc(FD->DNLoc, FD->getDeclName(), Record, Idx);
FD->IdentifierNamespace = Record[Idx++];
// FunctionDecl's body is handled last at ASTDeclReader::Visit,
// after everything else is read.
FD->SClass = (StorageClass)Record[Idx++];
FD->SClassAsWritten = (StorageClass)Record[Idx++];
FD->IsInline = Record[Idx++];
FD->IsInlineSpecified = Record[Idx++];
FD->IsVirtualAsWritten = Record[Idx++];
FD->IsPure = Record[Idx++];
FD->HasInheritedPrototype = Record[Idx++];
FD->HasWrittenPrototype = Record[Idx++];
FD->IsDeleted = Record[Idx++];
FD->IsTrivial = Record[Idx++];
FD->IsDefaulted = Record[Idx++];
FD->IsExplicitlyDefaulted = Record[Idx++];
FD->HasImplicitReturnZero = Record[Idx++];
FD->IsConstexpr = Record[Idx++];
FD->EndRangeLoc = ReadSourceLocation(Record, Idx);
switch ((FunctionDecl::TemplatedKind)Record[Idx++]) {
case FunctionDecl::TK_NonTemplate:
mergeRedeclarable(FD, Redecl);
break;
case FunctionDecl::TK_FunctionTemplate:
FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>(Record,
Idx));
break;
case FunctionDecl::TK_MemberSpecialization: {
FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>(Record, Idx);
TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
SourceLocation POI = ReadSourceLocation(Record, Idx);
FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
break;
}
case FunctionDecl::TK_FunctionTemplateSpecialization: {
FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>(Record,
Idx);
TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
// Template arguments.
SmallVector<TemplateArgument, 8> TemplArgs;
Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
// Template args as written.
SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
SourceLocation LAngleLoc, RAngleLoc;
bool HasTemplateArgumentsAsWritten = Record[Idx++];
if (HasTemplateArgumentsAsWritten) {
unsigned NumTemplateArgLocs = Record[Idx++];
TemplArgLocs.reserve(NumTemplateArgLocs);
for (unsigned i=0; i != NumTemplateArgLocs; ++i)
TemplArgLocs.push_back(
Reader.ReadTemplateArgumentLoc(F, Record, Idx));
LAngleLoc = ReadSourceLocation(Record, Idx);
RAngleLoc = ReadSourceLocation(Record, Idx);
}
SourceLocation POI = ReadSourceLocation(Record, Idx);
ASTContext &C = Reader.getContext();
TemplateArgumentList *TemplArgList
= TemplateArgumentList::CreateCopy(C, TemplArgs.data(), TemplArgs.size());
TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
for (unsigned i=0, e = TemplArgLocs.size(); i != e; ++i)
TemplArgsInfo.addArgument(TemplArgLocs[i]);
FunctionTemplateSpecializationInfo *FTInfo
= FunctionTemplateSpecializationInfo::Create(C, FD, Template, TSK,
TemplArgList,
HasTemplateArgumentsAsWritten ? &TemplArgsInfo : 0,
POI);
FD->TemplateOrSpecialization = FTInfo;
if (FD->isCanonicalDecl()) { // if canonical add to template's set.
// The template that contains the specializations set. It's not safe to
// use getCanonicalDecl on Template since it may still be initializing.
FunctionTemplateDecl *CanonTemplate
= ReadDeclAs<FunctionTemplateDecl>(Record, Idx);
// Get the InsertPos by FindNodeOrInsertPos() instead of calling
// InsertNode(FTInfo) directly to avoid the getASTContext() call in
// FunctionTemplateSpecializationInfo's Profile().
// We avoid getASTContext because a decl in the parent hierarchy may
// be initializing.
llvm::FoldingSetNodeID ID;
FunctionTemplateSpecializationInfo::Profile(ID, TemplArgs.data(),
TemplArgs.size(), C);
void *InsertPos = 0;
CanonTemplate->getSpecializations().FindNodeOrInsertPos(ID, InsertPos);
assert(InsertPos && "Another specialization already inserted!");
CanonTemplate->getSpecializations().InsertNode(FTInfo, InsertPos);
}
break;
}
case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
// Templates.
UnresolvedSet<8> TemplDecls;
unsigned NumTemplates = Record[Idx++];
while (NumTemplates--)
TemplDecls.addDecl(ReadDeclAs<NamedDecl>(Record, Idx));
// Templates args.
TemplateArgumentListInfo TemplArgs;
unsigned NumArgs = Record[Idx++];
while (NumArgs--)
TemplArgs.addArgument(Reader.ReadTemplateArgumentLoc(F, Record, Idx));
TemplArgs.setLAngleLoc(ReadSourceLocation(Record, Idx));
TemplArgs.setRAngleLoc(ReadSourceLocation(Record, Idx));
FD->setDependentTemplateSpecialization(Reader.getContext(),
TemplDecls, TemplArgs);
break;
}
}
// Read in the parameters.
unsigned NumParams = Record[Idx++];
SmallVector<ParmVarDecl *, 16> Params;
Params.reserve(NumParams);
for (unsigned I = 0; I != NumParams; ++I)
Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx));
FD->setParams(Reader.getContext(), Params);
}
void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
VisitNamedDecl(MD);
if (Record[Idx++]) {
// In practice, this won't be executed (since method definitions
// don't occur in header files).
MD->setBody(Reader.ReadStmt(F));
MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx));
MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>(Record, Idx));
}
MD->setInstanceMethod(Record[Idx++]);
MD->setVariadic(Record[Idx++]);
MD->setSynthesized(Record[Idx++]);
MD->setDefined(Record[Idx++]);
MD->IsRedeclaration = Record[Idx++];
MD->HasRedeclaration = Record[Idx++];
if (MD->HasRedeclaration)
Reader.getContext().setObjCMethodRedeclaration(MD,
ReadDeclAs<ObjCMethodDecl>(Record, Idx));
MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]);
MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
MD->SetRelatedResultType(Record[Idx++]);
MD->setResultType(Reader.readType(F, Record, Idx));
MD->setResultTypeSourceInfo(GetTypeSourceInfo(Record, Idx));
MD->setEndLoc(ReadSourceLocation(Record, Idx));
unsigned NumParams = Record[Idx++];
SmallVector<ParmVarDecl *, 16> Params;
Params.reserve(NumParams);
for (unsigned I = 0; I != NumParams; ++I)
Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx));
MD->SelLocsKind = Record[Idx++];
unsigned NumStoredSelLocs = Record[Idx++];
SmallVector<SourceLocation, 16> SelLocs;
SelLocs.reserve(NumStoredSelLocs);
for (unsigned i = 0; i != NumStoredSelLocs; ++i)
SelLocs.push_back(ReadSourceLocation(Record, Idx));
MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
}
void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
VisitNamedDecl(CD);
CD->setAtStartLoc(ReadSourceLocation(Record, Idx));
CD->setAtEndRange(ReadSourceRange(Record, Idx));
}
void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
RedeclarableResult Redecl = VisitRedeclarable(ID);
VisitObjCContainerDecl(ID);
TypeIDForTypeDecl = Reader.getGlobalTypeID(F, Record[Idx++]);
mergeRedeclarable(ID, Redecl);
if (Record[Idx++]) {
// Read the definition.
ID->allocateDefinitionData();
// Set the definition data of the canonical declaration, so other
// redeclarations will see it.
ID->getCanonicalDecl()->Data = ID->Data;
ObjCInterfaceDecl::DefinitionData &Data = ID->data();
// Read the superclass.
Data.SuperClass = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx);
Data.SuperClassLoc = ReadSourceLocation(Record, Idx);
Data.EndLoc = ReadSourceLocation(Record, Idx);
// Read the directly referenced protocols and their SourceLocations.
unsigned NumProtocols = Record[Idx++];
SmallVector<ObjCProtocolDecl *, 16> Protocols;
Protocols.reserve(NumProtocols);
for (unsigned I = 0; I != NumProtocols; ++I)
Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtocols);
for (unsigned I = 0; I != NumProtocols; ++I)
ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
ID->setProtocolList(Protocols.data(), NumProtocols, ProtoLocs.data(),
Reader.getContext());
// Read the transitive closure of protocols referenced by this class.
NumProtocols = Record[Idx++];
Protocols.clear();
Protocols.reserve(NumProtocols);
for (unsigned I = 0; I != NumProtocols; ++I)
Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
ID->data().AllReferencedProtocols.set(Protocols.data(), NumProtocols,
Reader.getContext());
// We will rebuild this list lazily.
ID->setIvarList(0);
// Note that we have deserialized a definition.
Reader.PendingDefinitions.insert(ID);
// Note that we've loaded this Objective-C class.
Reader.ObjCClassesLoaded.push_back(ID);
} else {
ID->Data = ID->getCanonicalDecl()->Data;
}
}
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) {
RedeclarableResult Redecl = VisitRedeclarable(PD);
VisitObjCContainerDecl(PD);
mergeRedeclarable(PD, Redecl);
if (Record[Idx++]) {
// Read the definition.
PD->allocateDefinitionData();
// Set the definition data of the canonical declaration, so other
// redeclarations will see it.
PD->getCanonicalDecl()->Data = PD->Data;
unsigned NumProtoRefs = Record[Idx++];
SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
ProtoRefs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
Reader.getContext());
// Note that we have deserialized a definition.
Reader.PendingDefinitions.insert(PD);
} else {
PD->Data = PD->getCanonicalDecl()->Data;
}
}
void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
VisitFieldDecl(FD);
}
void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
VisitObjCContainerDecl(CD);
CD->setCategoryNameLoc(ReadSourceLocation(Record, Idx));
CD->setIvarLBraceLoc(ReadSourceLocation(Record, Idx));
CD->setIvarRBraceLoc(ReadSourceLocation(Record, Idx));
// Note that this category has been deserialized. We do this before
// deserializing the interface declaration, so that it will consider this
/// category.
Reader.CategoriesDeserialized.insert(CD);
CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx);
unsigned NumProtoRefs = Record[Idx++];
SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
ProtoRefs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
Reader.getContext());
CD->setHasSynthBitfield(Record[Idx++]);
}
void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
VisitNamedDecl(CAD);
CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
}
void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
VisitNamedDecl(D);
D->setAtLoc(ReadSourceLocation(Record, Idx));
D->setType(GetTypeSourceInfo(Record, Idx));
// FIXME: stable encoding
D->setPropertyAttributes(
(ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
D->setPropertyAttributesAsWritten(
(ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
// FIXME: stable encoding
D->setPropertyImplementation(
(ObjCPropertyDecl::PropertyControl)Record[Idx++]);
D->setGetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector());
D->setSetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector());
D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx));
D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx));
D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>(Record, Idx));
}
void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
VisitObjCContainerDecl(D);
D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
}
void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
VisitObjCImplDecl(D);
D->setIdentifier(Reader.GetIdentifierInfo(F, Record, Idx));
D->CategoryNameLoc = ReadSourceLocation(Record, Idx);
}
void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
VisitObjCImplDecl(D);
D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
D->setIvarLBraceLoc(ReadSourceLocation(Record, Idx));
D->setIvarRBraceLoc(ReadSourceLocation(Record, Idx));
llvm::tie(D->IvarInitializers, D->NumIvarInitializers)
= Reader.ReadCXXCtorInitializers(F, Record, Idx);
D->setHasSynthBitfield(Record[Idx++]);
}
void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
VisitDecl(D);
D->setAtLoc(ReadSourceLocation(Record, Idx));
D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>(Record, Idx));
D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>(Record, Idx);
D->IvarLoc = ReadSourceLocation(Record, Idx);
D->setGetterCXXConstructor(Reader.ReadExpr(F));
D->setSetterCXXAssignment(Reader.ReadExpr(F));
}
void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
VisitDeclaratorDecl(FD);
FD->setMutable(Record[Idx++]);
int BitWidthOrInitializer = Record[Idx++];
if (BitWidthOrInitializer == 1)
FD->setBitWidth(Reader.ReadExpr(F));
else if (BitWidthOrInitializer == 2)
FD->setInClassInitializer(Reader.ReadExpr(F));
if (!FD->getDeclName()) {
if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>(Record, Idx))
Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
}
}
void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
VisitValueDecl(FD);
FD->ChainingSize = Record[Idx++];
assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
for (unsigned I = 0; I != FD->ChainingSize; ++I)
FD->Chaining[I] = ReadDeclAs<NamedDecl>(Record, Idx);
}
void ASTDeclReader::VisitVarDecl(VarDecl *VD) {
RedeclarableResult Redecl = VisitRedeclarable(VD);
VisitDeclaratorDecl(VD);
VD->VarDeclBits.SClass = (StorageClass)Record[Idx++];
VD->VarDeclBits.SClassAsWritten = (StorageClass)Record[Idx++];
VD->VarDeclBits.ThreadSpecified = Record[Idx++];
VD->VarDeclBits.InitStyle = Record[Idx++];
VD->VarDeclBits.ExceptionVar = Record[Idx++];
VD->VarDeclBits.NRVOVariable = Record[Idx++];
VD->VarDeclBits.CXXForRangeDecl = Record[Idx++];
VD->VarDeclBits.ARCPseudoStrong = Record[Idx++];
// Only true variables (not parameters or implicit parameters) can be merged.
if (VD->getKind() == Decl::Var)
mergeRedeclarable(VD, Redecl);
if (uint64_t Val = Record[Idx++]) {
VD->setInit(Reader.ReadExpr(F));
if (Val > 1) {
EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
Eval->CheckedICE = true;
Eval->IsICE = Val == 3;
}
}
if (Record[Idx++]) { // HasMemberSpecializationInfo.
VarDecl *Tmpl = ReadDeclAs<VarDecl>(Record, Idx);
TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
SourceLocation POI = ReadSourceLocation(Record, Idx);
Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
}
}
void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
VisitVarDecl(PD);
}
void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
VisitVarDecl(PD);
unsigned isObjCMethodParam = Record[Idx++];
unsigned scopeDepth = Record[Idx++];
unsigned scopeIndex = Record[Idx++];
unsigned declQualifier = Record[Idx++];
if (isObjCMethodParam) {
assert(scopeDepth == 0);
PD->setObjCMethodScopeInfo(scopeIndex);
PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
} else {
PD->setScopeInfo(scopeDepth, scopeIndex);
}
PD->ParmVarDeclBits.IsKNRPromoted = Record[Idx++];
PD->ParmVarDeclBits.HasInheritedDefaultArg = Record[Idx++];
if (Record[Idx++]) // hasUninstantiatedDefaultArg.
PD->setUninstantiatedDefaultArg(Reader.ReadExpr(F));
}
void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
VisitDecl(AD);
AD->setAsmString(cast<StringLiteral>(Reader.ReadExpr(F)));
AD->setRParenLoc(ReadSourceLocation(Record, Idx));
}
void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) {
VisitDecl(BD);
BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadStmt(F)));
BD->setSignatureAsWritten(GetTypeSourceInfo(Record, Idx));
unsigned NumParams = Record[Idx++];
SmallVector<ParmVarDecl *, 16> Params;
Params.reserve(NumParams);
for (unsigned I = 0; I != NumParams; ++I)
Params.push_back(ReadDeclAs<ParmVarDecl>(Record, Idx));
BD->setParams(Params);
bool capturesCXXThis = Record[Idx++];
unsigned numCaptures = Record[Idx++];
SmallVector<BlockDecl::Capture, 16> captures;
captures.reserve(numCaptures);
for (unsigned i = 0; i != numCaptures; ++i) {
VarDecl *decl = ReadDeclAs<VarDecl>(Record, Idx);
unsigned flags = Record[Idx++];
bool byRef = (flags & 1);
bool nested = (flags & 2);
Expr *copyExpr = ((flags & 4) ? Reader.ReadExpr(F) : 0);
captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
}
BD->setCaptures(Reader.getContext(), captures.begin(),
captures.end(), capturesCXXThis);
}
void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
VisitDecl(D);
D->setLanguage((LinkageSpecDecl::LanguageIDs)Record[Idx++]);
D->setExternLoc(ReadSourceLocation(Record, Idx));
D->setRBraceLoc(ReadSourceLocation(Record, Idx));
}
void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
VisitNamedDecl(D);
D->setLocStart(ReadSourceLocation(Record, Idx));
}
void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
RedeclarableResult Redecl = VisitRedeclarable(D);
VisitNamedDecl(D);
D->setInline(Record[Idx++]);
D->LocStart = ReadSourceLocation(Record, Idx);
D->RBraceLoc = ReadSourceLocation(Record, Idx);
mergeRedeclarable(D, Redecl);
if (Redecl.getFirstID() == ThisDeclID) {
// Each module has its own anonymous namespace, which is disjoint from
// any other module's anonymous namespaces, so don't attach the anonymous
// namespace at all.
NamespaceDecl *Anon = ReadDeclAs<NamespaceDecl>(Record, Idx);
if (F.Kind != MK_Module)
D->setAnonymousNamespace(Anon);
} else {
// Link this namespace back to the first declaration, which has already
// been deserialized.
D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDeclaration());
}
}
void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
VisitNamedDecl(D);
D->NamespaceLoc = ReadSourceLocation(Record, Idx);
D->IdentLoc = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
D->Namespace = ReadDeclAs<NamedDecl>(Record, Idx);
}
void ASTDeclReader::VisitUsingDecl(UsingDecl *D) {
VisitNamedDecl(D);
D->setUsingLocation(ReadSourceLocation(Record, Idx));
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx);
D->FirstUsingShadow.setPointer(ReadDeclAs<UsingShadowDecl>(Record, Idx));
D->setTypeName(Record[Idx++]);
if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>(Record, Idx))
Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
}
void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
VisitNamedDecl(D);
D->setTargetDecl(ReadDeclAs<NamedDecl>(Record, Idx));
D->UsingOrNextShadow = ReadDeclAs<NamedDecl>(Record, Idx);
UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>(Record, Idx);
if (Pattern)
Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
}
void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
VisitNamedDecl(D);
D->UsingLoc = ReadSourceLocation(Record, Idx);
D->NamespaceLoc = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
D->NominatedNamespace = ReadDeclAs<NamedDecl>(Record, Idx);
D->CommonAncestor = ReadDeclAs<DeclContext>(Record, Idx);
}
void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
VisitValueDecl(D);
D->setUsingLoc(ReadSourceLocation(Record, Idx));
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx);
}
void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
UnresolvedUsingTypenameDecl *D) {
VisitTypeDecl(D);
D->TypenameLocation = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
}
void ASTDeclReader::ReadCXXDefinitionData(
struct CXXRecordDecl::DefinitionData &Data,
const RecordData &Record, unsigned &Idx) {
// Note: the caller has deserialized the IsLambda bit already.
Data.UserDeclaredConstructor = Record[Idx++];
Data.UserDeclaredCopyConstructor = Record[Idx++];
Data.UserDeclaredMoveConstructor = Record[Idx++];
Data.UserDeclaredCopyAssignment = Record[Idx++];
Data.UserDeclaredMoveAssignment = Record[Idx++];
Data.UserDeclaredDestructor = Record[Idx++];
Data.Aggregate = Record[Idx++];
Data.PlainOldData = Record[Idx++];
Data.Empty = Record[Idx++];
Data.Polymorphic = Record[Idx++];
Data.Abstract = Record[Idx++];
Data.IsStandardLayout = Record[Idx++];
Data.HasNoNonEmptyBases = Record[Idx++];
Data.HasPrivateFields = Record[Idx++];
Data.HasProtectedFields = Record[Idx++];
Data.HasPublicFields = Record[Idx++];
Data.HasMutableFields = Record[Idx++];
Data.HasTrivialDefaultConstructor = Record[Idx++];
Data.HasConstexprNonCopyMoveConstructor = Record[Idx++];
Data.HasTrivialCopyConstructor = Record[Idx++];
Data.HasTrivialMoveConstructor = Record[Idx++];
Data.HasTrivialCopyAssignment = Record[Idx++];
Data.HasTrivialMoveAssignment = Record[Idx++];
Data.HasTrivialDestructor = Record[Idx++];
Data.HasNonLiteralTypeFieldsOrBases = Record[Idx++];
Data.ComputedVisibleConversions = Record[Idx++];
Data.UserProvidedDefaultConstructor = Record[Idx++];
Data.DeclaredDefaultConstructor = Record[Idx++];
Data.DeclaredCopyConstructor = Record[Idx++];
Data.DeclaredMoveConstructor = Record[Idx++];
Data.DeclaredCopyAssignment = Record[Idx++];
Data.DeclaredMoveAssignment = Record[Idx++];
Data.DeclaredDestructor = Record[Idx++];
Data.FailedImplicitMoveConstructor = Record[Idx++];
Data.FailedImplicitMoveAssignment = Record[Idx++];
Data.NumBases = Record[Idx++];
if (Data.NumBases)
Data.Bases = Reader.readCXXBaseSpecifiers(F, Record, Idx);
Data.NumVBases = Record[Idx++];
if (Data.NumVBases)
Data.VBases = Reader.readCXXBaseSpecifiers(F, Record, Idx);
Reader.ReadUnresolvedSet(F, Data.Conversions, Record, Idx);
Reader.ReadUnresolvedSet(F, Data.VisibleConversions, Record, Idx);
assert(Data.Definition && "Data.Definition should be already set!");
Data.FirstFriend = ReadDeclAs<FriendDecl>(Record, Idx);
if (Data.IsLambda) {
typedef LambdaExpr::Capture Capture;
CXXRecordDecl::LambdaDefinitionData &Lambda
= static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
Lambda.Dependent = Record[Idx++];
Lambda.NumCaptures = Record[Idx++];
Lambda.NumExplicitCaptures = Record[Idx++];
Lambda.ManglingNumber = Record[Idx++];
Lambda.ContextDecl = ReadDecl(Record, Idx);
Lambda.Captures
= (Capture*)Reader.Context.Allocate(sizeof(Capture)*Lambda.NumCaptures);
Capture *ToCapture = Lambda.Captures;
for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
SourceLocation Loc = ReadSourceLocation(Record, Idx);
bool IsImplicit = Record[Idx++];
LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record[Idx++]);
VarDecl *Var = ReadDeclAs<VarDecl>(Record, Idx);
SourceLocation EllipsisLoc = ReadSourceLocation(Record, Idx);
*ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
}
}
}
void ASTDeclReader::VisitCXXRecordDecl(CXXRecordDecl *D) {
VisitRecordDecl(D);
ASTContext &C = Reader.getContext();
if (Record[Idx++]) {
// Determine whether this is a lambda closure type, so that we can
// allocate the appropriate DefinitionData structure.
bool IsLambda = Record[Idx++];
if (IsLambda)
D->DefinitionData = new (C) CXXRecordDecl::LambdaDefinitionData(D, false);
else
D->DefinitionData = new (C) struct CXXRecordDecl::DefinitionData(D);
// Propagate the DefinitionData pointer to the canonical declaration, so
// that all other deserialized declarations will see it.
// FIXME: Complain if there already is a DefinitionData!
D->getCanonicalDecl()->DefinitionData = D->DefinitionData;
ReadCXXDefinitionData(*D->DefinitionData, Record, Idx);
// Note that we have deserialized a definition. Any declarations
// deserialized before this one will be be given the DefinitionData pointer
// at the end.
Reader.PendingDefinitions.insert(D);
} else {
// Propagate DefinitionData pointer from the canonical declaration.
D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
}
enum CXXRecKind {
CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
};
switch ((CXXRecKind)Record[Idx++]) {
case CXXRecNotTemplate:
break;
case CXXRecTemplate:
D->TemplateOrInstantiation = ReadDeclAs<ClassTemplateDecl>(Record, Idx);
break;
case CXXRecMemberSpecialization: {
CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>(Record, Idx);
TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
SourceLocation POI = ReadSourceLocation(Record, Idx);
MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
MSI->setPointOfInstantiation(POI);
D->TemplateOrInstantiation = MSI;
break;
}
}
// Load the key function to avoid deserializing every method so we can
// compute it.
if (D->IsCompleteDefinition) {
if (CXXMethodDecl *Key = ReadDeclAs<CXXMethodDecl>(Record, Idx))
C.KeyFunctions[D] = Key;
}
}
void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
VisitFunctionDecl(D);
unsigned NumOverridenMethods = Record[Idx++];
while (NumOverridenMethods--) {
// Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
// MD may be initializing.
if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>(Record, Idx))
Reader.getContext().addOverriddenMethod(D, MD);
}
}
void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
VisitCXXMethodDecl(D);
D->IsExplicitSpecified = Record[Idx++];
D->ImplicitlyDefined = Record[Idx++];
llvm::tie(D->CtorInitializers, D->NumCtorInitializers)
= Reader.ReadCXXCtorInitializers(F, Record, Idx);
}
void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
VisitCXXMethodDecl(D);
D->ImplicitlyDefined = Record[Idx++];
D->OperatorDelete = ReadDeclAs<FunctionDecl>(Record, Idx);
}
void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
VisitCXXMethodDecl(D);
D->IsExplicitSpecified = Record[Idx++];
if (D->isLambdaToBlockPointerConversion())
D->setLambdaToBlockPointerCopyInit(Reader.ReadExpr(F));
}
void ASTDeclReader::VisitImportDecl(ImportDecl *D) {
VisitDecl(D);
D->ImportedAndComplete.setPointer(readModule(Record, Idx));
D->ImportedAndComplete.setInt(Record[Idx++]);
SourceLocation *StoredLocs = reinterpret_cast<SourceLocation *>(D + 1);
for (unsigned I = 0, N = Record.back(); I != N; ++I)
StoredLocs[I] = ReadSourceLocation(Record, Idx);
++Idx;
}
void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
VisitDecl(D);
D->setColonLoc(ReadSourceLocation(Record, Idx));
}
void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
VisitDecl(D);
if (Record[Idx++])
D->Friend = GetTypeSourceInfo(Record, Idx);
else
D->Friend = ReadDeclAs<NamedDecl>(Record, Idx);
D->NextFriend = Record[Idx++];
D->UnsupportedFriend = (Record[Idx++] != 0);
D->FriendLoc = ReadSourceLocation(Record, Idx);
}
void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
VisitDecl(D);
unsigned NumParams = Record[Idx++];
D->NumParams = NumParams;
D->Params = new TemplateParameterList*[NumParams];
for (unsigned i = 0; i != NumParams; ++i)
D->Params[i] = Reader.ReadTemplateParameterList(F, Record, Idx);
if (Record[Idx++]) // HasFriendDecl
D->Friend = ReadDeclAs<NamedDecl>(Record, Idx);
else
D->Friend = GetTypeSourceInfo(Record, Idx);
D->FriendLoc = ReadSourceLocation(Record, Idx);
}
void ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
VisitNamedDecl(D);
NamedDecl *TemplatedDecl = ReadDeclAs<NamedDecl>(Record, Idx);
TemplateParameterList* TemplateParams
= Reader.ReadTemplateParameterList(F, Record, Idx);
D->init(TemplatedDecl, TemplateParams);
}
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
RedeclarableResult Redecl = VisitRedeclarable(D);
// Make sure we've allocated the Common pointer first. We do this before
// VisitTemplateDecl so that getCommonPtr() can be used during initialization.
RedeclarableTemplateDecl *CanonD = D->getCanonicalDecl();
if (!CanonD->Common) {
CanonD->Common = CanonD->newCommon(Reader.getContext());
Reader.PendingDefinitions.insert(CanonD);
}
D->Common = CanonD->Common;
// If this is the first declaration of the template, fill in the information
// for the 'common' pointer.
if (ThisDeclID == Redecl.getFirstID()) {
if (RedeclarableTemplateDecl *RTD
= ReadDeclAs<RedeclarableTemplateDecl>(Record, Idx)) {
assert(RTD->getKind() == D->getKind() &&
"InstantiatedFromMemberTemplate kind mismatch");
D->setInstantiatedFromMemberTemplate(RTD);
if (Record[Idx++])
D->setMemberSpecialization();
}
}
VisitTemplateDecl(D);
D->IdentifierNamespace = Record[Idx++];
return Redecl;
}
void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
if (ThisDeclID == Redecl.getFirstID()) {
// This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
// the specializations.
SmallVector<serialization::DeclID, 2> SpecIDs;
SpecIDs.push_back(0);
// Specializations.
unsigned Size = Record[Idx++];
SpecIDs[0] += Size;
for (unsigned I = 0; I != Size; ++I)
SpecIDs.push_back(ReadDeclID(Record, Idx));
// Partial specializations.
Size = Record[Idx++];
SpecIDs[0] += Size;
for (unsigned I = 0; I != Size; ++I)
SpecIDs.push_back(ReadDeclID(Record, Idx));
if (SpecIDs[0]) {
typedef serialization::DeclID DeclID;
ClassTemplateDecl::Common *CommonPtr = D->getCommonPtr();
// FIXME: Append specializations!
CommonPtr->LazySpecializations
= new (Reader.getContext()) DeclID [SpecIDs.size()];
memcpy(CommonPtr->LazySpecializations, SpecIDs.data(),
SpecIDs.size() * sizeof(DeclID));
}
// InjectedClassNameType is computed.
}
}
void ASTDeclReader::VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D) {
VisitCXXRecordDecl(D);
ASTContext &C = Reader.getContext();
if (Decl *InstD = ReadDecl(Record, Idx)) {
if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
D->SpecializedTemplate = CTD;
} else {
SmallVector<TemplateArgument, 8> TemplArgs;
Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
TemplateArgumentList *ArgList
= TemplateArgumentList::CreateCopy(C, TemplArgs.data(),
TemplArgs.size());
ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
= new (C) ClassTemplateSpecializationDecl::
SpecializedPartialSpecialization();
PS->PartialSpecialization
= cast<ClassTemplatePartialSpecializationDecl>(InstD);
PS->TemplateArgs = ArgList;
D->SpecializedTemplate = PS;
}
}
// Explicit info.
if (TypeSourceInfo *TyInfo = GetTypeSourceInfo(Record, Idx)) {
ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
= new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
ExplicitInfo->TypeAsWritten = TyInfo;
ExplicitInfo->ExternLoc = ReadSourceLocation(Record, Idx);
ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation(Record, Idx);
D->ExplicitInfo = ExplicitInfo;
}
SmallVector<TemplateArgument, 8> TemplArgs;
Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs.data(),
TemplArgs.size());
D->PointOfInstantiation = ReadSourceLocation(Record, Idx);
D->SpecializationKind = (TemplateSpecializationKind)Record[Idx++];
if (D->isCanonicalDecl()) { // It's kept in the folding set.
ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>(Record,Idx);
if (ClassTemplatePartialSpecializationDecl *Partial
= dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
CanonPattern->getCommonPtr()->PartialSpecializations.InsertNode(Partial);
} else {
CanonPattern->getCommonPtr()->Specializations.InsertNode(D);
}
}
}
void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
ClassTemplatePartialSpecializationDecl *D) {
VisitClassTemplateSpecializationDecl(D);
ASTContext &C = Reader.getContext();
D->TemplateParams = Reader.ReadTemplateParameterList(F, Record, Idx);
unsigned NumArgs = Record[Idx++];
if (NumArgs) {
D->NumArgsAsWritten = NumArgs;
D->ArgsAsWritten = new (C) TemplateArgumentLoc[NumArgs];
for (unsigned i=0; i != NumArgs; ++i)
D->ArgsAsWritten[i] = Reader.ReadTemplateArgumentLoc(F, Record, Idx);
}
D->SequenceNumber = Record[Idx++];
// These are read/set from/to the first declaration.
if (D->getPreviousDecl() == 0) {
D->InstantiatedFromMember.setPointer(
ReadDeclAs<ClassTemplatePartialSpecializationDecl>(Record, Idx));
D->InstantiatedFromMember.setInt(Record[Idx++]);
}
}
void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
ClassScopeFunctionSpecializationDecl *D) {
VisitDecl(D);
D->Specialization = ReadDeclAs<CXXMethodDecl>(Record, Idx);
}
void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
if (ThisDeclID == Redecl.getFirstID()) {
// This FunctionTemplateDecl owns a CommonPtr; read it.
// Read the function specialization declarations.
// FunctionTemplateDecl's FunctionTemplateSpecializationInfos are filled
// when reading the specialized FunctionDecl.
unsigned NumSpecs = Record[Idx++];
while (NumSpecs--)
(void)ReadDecl(Record, Idx);
}
}
void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
VisitTypeDecl(D);
D->setDeclaredWithTypename(Record[Idx++]);
bool Inherited = Record[Idx++];
TypeSourceInfo *DefArg = GetTypeSourceInfo(Record, Idx);
D->setDefaultArgument(DefArg, Inherited);
}
void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
VisitDeclaratorDecl(D);
// TemplateParmPosition.
D->setDepth(Record[Idx++]);
D->setPosition(Record[Idx++]);
if (D->isExpandedParameterPack()) {
void **Data = reinterpret_cast<void **>(D + 1);
for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
Data[2*I] = Reader.readType(F, Record, Idx).getAsOpaquePtr();
Data[2*I + 1] = GetTypeSourceInfo(Record, Idx);
}
} else {
// Rest of NonTypeTemplateParmDecl.
D->ParameterPack = Record[Idx++];
if (Record[Idx++]) {
Expr *DefArg = Reader.ReadExpr(F);
bool Inherited = Record[Idx++];
D->setDefaultArgument(DefArg, Inherited);
}
}
}
void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
VisitTemplateDecl(D);
// TemplateParmPosition.
D->setDepth(Record[Idx++]);
D->setPosition(Record[Idx++]);
// Rest of TemplateTemplateParmDecl.
TemplateArgumentLoc Arg = Reader.ReadTemplateArgumentLoc(F, Record, Idx);
bool IsInherited = Record[Idx++];
D->setDefaultArgument(Arg, IsInherited);
D->ParameterPack = Record[Idx++];
}
void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
VisitRedeclarableTemplateDecl(D);
}
void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
VisitDecl(D);
D->AssertExpr = Reader.ReadExpr(F);
D->Message = cast<StringLiteral>(Reader.ReadExpr(F));
D->RParenLoc = ReadSourceLocation(Record, Idx);
}
std::pair<uint64_t, uint64_t>
ASTDeclReader::VisitDeclContext(DeclContext *DC) {
uint64_t LexicalOffset = Record[Idx++];
uint64_t VisibleOffset = Record[Idx++];
return std::make_pair(LexicalOffset, VisibleOffset);
}
template <typename T>
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
DeclID FirstDeclID = ReadDeclID(Record, Idx);
// 0 indicates that this declaration was the only declaration of its entity,
// and is used for space optimization.
if (FirstDeclID == 0)
FirstDeclID = ThisDeclID;
T *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
if (FirstDecl != D) {
// 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(FirstDecl);
}
// Note that this declaration has been deserialized.
Reader.RedeclsDeserialized.insert(static_cast<T *>(D));
// The result structure takes care to note that we need to load the
// other declaration chains for this ID.
return RedeclarableResult(Reader, FirstDeclID);
}
/// \brief Attempts to merge the given declaration (D) with another declaration
/// of the same entity.
template<typename T>
void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *D,
RedeclarableResult &Redecl) {
// If modules are not available, there is no reason to perform this merge.
if (!Reader.getContext().getLangOptions().Modules)
return;
if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D))) {
if (T *Existing = ExistingRes) {
T *ExistingCanon = Existing->getCanonicalDecl();
T *DCanon = static_cast<T*>(D)->getCanonicalDecl();
if (ExistingCanon != DCanon) {
// Have our redeclaration link point back at the canonical declaration
// of the existing declaration, so that this declaration has the
// appropriate canonical declaration.
D->RedeclLink
= typename Redeclarable<T>::PreviousDeclLink(ExistingCanon);
// When we merge a namespace, update its pointer to the first namespace.
if (NamespaceDecl *Namespace
= dyn_cast<NamespaceDecl>(static_cast<T*>(D))) {
Namespace->AnonOrFirstNamespaceAndInline.setPointer(
static_cast<NamespaceDecl *>(static_cast<void*>(ExistingCanon)));
}
// Don't introduce DCanon into the set of pending declaration chains.
Redecl.suppress();
// Introduce ExistingCanon into the set of pending declaration chains,
// if in fact it came from a module file.
if (ExistingCanon->isFromASTFile()) {
GlobalDeclID ExistingCanonID = ExistingCanon->getGlobalID();
assert(ExistingCanonID && "Unrecorded canonical declaration ID?");
if (Reader.PendingDeclChainsKnown.insert(ExistingCanonID))
Reader.PendingDeclChains.push_back(ExistingCanonID);
}
// If this declaration was the canonical declaration, make a note of
// that. We accept the linear algorithm here because the number of
// unique canonical declarations of an entity should always be tiny.
if (DCanon == static_cast<T*>(D)) {
SmallVectorImpl<DeclID> &Merged = Reader.MergedDecls[ExistingCanon];
if (std::find(Merged.begin(), Merged.end(), Redecl.getFirstID())
== Merged.end())
Merged.push_back(Redecl.getFirstID());
// If ExistingCanon did not come from a module file, introduce the
// first declaration that *does* come from a module file to the
// set of pending declaration chains, so that we merge this
// declaration.
if (!ExistingCanon->isFromASTFile() &&
Reader.PendingDeclChainsKnown.insert(Redecl.getFirstID()))
Reader.PendingDeclChains.push_back(Merged[0]);
}
}
}
}
}
//===----------------------------------------------------------------------===//
// Attribute Reading
//===----------------------------------------------------------------------===//
/// \brief Reads attributes from the current stream position.
void ASTReader::ReadAttributes(ModuleFile &F, AttrVec &Attrs,
const RecordData &Record, unsigned &Idx) {
for (unsigned i = 0, e = Record[Idx++]; i != e; ++i) {
Attr *New = 0;
attr::Kind Kind = (attr::Kind)Record[Idx++];
SourceRange Range = ReadSourceRange(F, Record, Idx);
#include "clang/Serialization/AttrPCHRead.inc"
assert(New && "Unable to decode attribute?");
Attrs.push_back(New);
}
}
//===----------------------------------------------------------------------===//
// ASTReader Implementation
//===----------------------------------------------------------------------===//
/// \brief Note that we have loaded the declaration with the given
/// Index.
///
/// This routine notes that this declaration has already been loaded,
/// so that future GetDecl calls will return this declaration rather
/// than trying to load a new declaration.
inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
assert(!DeclsLoaded[Index] && "Decl loaded twice?");
DeclsLoaded[Index] = D;
}
/// \brief Determine whether the consumer will be interested in seeing
/// this declaration (via HandleTopLevelDecl).
///
/// This routine should return true for anything that might affect
/// code generation, e.g., inline function definitions, Objective-C
/// declarations with metadata, etc.
static bool isConsumerInterestedIn(Decl *D) {
// An ObjCMethodDecl is never considered as "interesting" because its
// implementation container always is.
if (isa<FileScopeAsmDecl>(D) ||
isa<ObjCProtocolDecl>(D) ||
isa<ObjCImplDecl>(D))
return true;
if (VarDecl *Var = dyn_cast<VarDecl>(D))
return Var->isFileVarDecl() &&
Var->isThisDeclarationADefinition() == VarDecl::Definition;
if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D))
return Func->doesThisDeclarationHaveABody();
return false;
}
/// \brief Get the correct cursor and offset for loading a declaration.
ASTReader::RecordLocation
ASTReader::DeclCursorForID(DeclID ID, unsigned &RawLocation) {
// See if there's an override.
DeclReplacementMap::iterator It = ReplacedDecls.find(ID);
if (It != ReplacedDecls.end()) {
RawLocation = It->second.RawLoc;
return RecordLocation(It->second.Mod, It->second.Offset);
}
GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
assert(I != GlobalDeclMap.end() && "Corrupted global declaration map");
ModuleFile *M = I->second;
const DeclOffset &
DOffs = M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
RawLocation = DOffs.Loc;
return RecordLocation(M, DOffs.BitOffset);
}
ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
ContinuousRangeMap<uint64_t, ModuleFile*, 4>::iterator I
= GlobalBitOffsetsMap.find(GlobalOffset);
assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map");
return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
}
uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset) {
return LocalOffset + M.GlobalBitOffset;
}
/// \brief Determine whether the two declarations refer to the same entity.
static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!");
if (X == Y)
return true;
// Must be in the same context.
if (!X->getDeclContext()->getRedeclContext()->Equals(
Y->getDeclContext()->getRedeclContext()))
return false;
// Two typedefs refer to the same entity if they have the same underlying
// type.
if (TypedefNameDecl *TypedefX = dyn_cast<TypedefNameDecl>(X))
if (TypedefNameDecl *TypedefY = dyn_cast<TypedefNameDecl>(Y))
return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
TypedefY->getUnderlyingType());
// Must have the same kind.
if (X->getKind() != Y->getKind())
return false;
// Objective-C classes and protocols with the same name always match.
if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
return true;
// Compatible tags match.
if (TagDecl *TagX = dyn_cast<TagDecl>(X)) {
TagDecl *TagY = cast<TagDecl>(Y);
return (TagX->getTagKind() == TagY->getTagKind()) ||
((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class) &&
(TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class));
}
// Functions with the same type and linkage match.
// FIXME: This needs to cope with function templates, merging of
//prototyped/non-prototyped functions, etc.
if (FunctionDecl *FuncX = dyn_cast<FunctionDecl>(X)) {
FunctionDecl *FuncY = cast<FunctionDecl>(Y);
return (FuncX->getLinkage() == FuncY->getLinkage()) &&
FuncX->getASTContext().hasSameType(FuncX->getType(), FuncY->getType());
}
// Variables with the same type and linkage match.
if (VarDecl *VarX = dyn_cast<VarDecl>(X)) {
VarDecl *VarY = cast<VarDecl>(Y);
return (VarX->getLinkage() == VarY->getLinkage()) &&
VarX->getASTContext().hasSameType(VarX->getType(), VarY->getType());
}
// Namespaces with the same name and inlinedness match.
if (NamespaceDecl *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
NamespaceDecl *NamespaceY = cast<NamespaceDecl>(Y);
return NamespaceX->isInline() == NamespaceY->isInline();
}
// FIXME: Many other cases to implement.
return false;
}
ASTDeclReader::FindExistingResult::~FindExistingResult() {
if (!AddResult || Existing)
return;
DeclContext *DC = New->getDeclContext()->getRedeclContext();
if (DC->isTranslationUnit() && Reader.SemaObj) {
Reader.SemaObj->IdResolver.tryAddTopLevelDecl(New, New->getDeclName());
} else if (DC->isNamespace()) {
DC->addDecl(New);
}
}
ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
DeclarationName Name = D->getDeclName();
if (!Name) {
// Don't bother trying to find unnamed declarations.
FindExistingResult Result(Reader, D, /*Existing=*/0);
Result.suppress();
return Result;
}
DeclContext *DC = D->getDeclContext()->getRedeclContext();
if (!DC->isFileContext())
return FindExistingResult(Reader);
if (DC->isTranslationUnit() && Reader.SemaObj) {
IdentifierResolver &IdResolver = Reader.SemaObj->IdResolver;
for (IdentifierResolver::iterator I = IdResolver.begin(Name),
IEnd = IdResolver.end();
I != IEnd; ++I) {
if (isSameEntity(*I, D))
return FindExistingResult(Reader, D, *I);
}
}
if (DC->isNamespace()) {
for (DeclContext::lookup_result R = DC->lookup(Name);
R.first != R.second; ++R.first) {
if (isSameEntity(*R.first, D))
return FindExistingResult(Reader, D, *R.first);
}
}
return FindExistingResult(Reader, D, /*Existing=*/0);
}
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 if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
TD->RedeclLink.setPointer(cast<TypedefNameDecl>(previous));
} else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
ID->RedeclLink.setPointer(cast<ObjCInterfaceDecl>(previous));
} else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
PD->RedeclLink.setPointer(cast<ObjCProtocolDecl>(previous));
} else if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(D)) {
ND->RedeclLink.setPointer(cast<NamespaceDecl>(previous));
} else {
RedeclarableTemplateDecl *TD = cast<RedeclarableTemplateDecl>(D);
TD->RedeclLink.setPointer(cast<RedeclarableTemplateDecl>(previous));
}
}
void ASTDeclReader::attachLatestDecl(Decl *D, Decl *Latest) {
assert(D && Latest);
if (TagDecl *TD = dyn_cast<TagDecl>(D)) {
TD->RedeclLink
= Redeclarable<TagDecl>::LatestDeclLink(cast<TagDecl>(Latest));
} else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
FD->RedeclLink
= Redeclarable<FunctionDecl>::LatestDeclLink(cast<FunctionDecl>(Latest));
} else if (VarDecl *VD = dyn_cast<VarDecl>(D)) {
VD->RedeclLink
= Redeclarable<VarDecl>::LatestDeclLink(cast<VarDecl>(Latest));
} else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
TD->RedeclLink
= Redeclarable<TypedefNameDecl>::LatestDeclLink(
cast<TypedefNameDecl>(Latest));
} else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
ID->RedeclLink
= Redeclarable<ObjCInterfaceDecl>::LatestDeclLink(
cast<ObjCInterfaceDecl>(Latest));
} else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
PD->RedeclLink
= Redeclarable<ObjCProtocolDecl>::LatestDeclLink(
cast<ObjCProtocolDecl>(Latest));
} else if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(D)) {
ND->RedeclLink
= Redeclarable<NamespaceDecl>::LatestDeclLink(
cast<NamespaceDecl>(Latest));
} else {
RedeclarableTemplateDecl *TD = cast<RedeclarableTemplateDecl>(D);
TD->RedeclLink
= Redeclarable<RedeclarableTemplateDecl>::LatestDeclLink(
cast<RedeclarableTemplateDecl>(Latest));
}
}
ASTReader::MergedDeclsMap::iterator
ASTReader::combineStoredMergedDecls(Decl *Canon, GlobalDeclID CanonID) {
// If we don't have any stored merged declarations, just look in the
// merged declarations set.
StoredMergedDeclsMap::iterator StoredPos = StoredMergedDecls.find(CanonID);
if (StoredPos == StoredMergedDecls.end())
return MergedDecls.find(Canon);
// Append the stored merged declarations to the merged declarations set.
MergedDeclsMap::iterator Pos = MergedDecls.find(Canon);
if (Pos == MergedDecls.end())
Pos = MergedDecls.insert(std::make_pair(Canon,
SmallVector<DeclID, 2>())).first;
Pos->second.append(StoredPos->second.begin(), StoredPos->second.end());
StoredMergedDecls.erase(StoredPos);
// Sort and uniquify the set of merged declarations.
llvm::array_pod_sort(Pos->second.begin(), Pos->second.end());
Pos->second.erase(std::unique(Pos->second.begin(), Pos->second.end()),
Pos->second.end());
return Pos;
}
void ASTReader::loadAndAttachPreviousDecl(Decl *D, serialization::DeclID ID) {
Decl *previous = GetDecl(ID);
ASTDeclReader::attachPreviousDecl(D, previous);
}
/// \brief Read the declaration at the given offset from the AST file.
Decl *ASTReader::ReadDeclRecord(DeclID ID) {
unsigned Index = ID - NUM_PREDEF_DECL_IDS;
unsigned RawLocation = 0;
RecordLocation Loc = DeclCursorForID(ID, RawLocation);
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, RawLocation, Record,Idx);
Decl *D = 0;
switch ((DeclCode)DeclsCursor.ReadRecord(Code, Record)) {
case DECL_CONTEXT_LEXICAL:
case DECL_CONTEXT_VISIBLE:
llvm_unreachable("Record cannot be de-serialized with ReadDeclRecord");
case DECL_TYPEDEF:
D = TypedefDecl::CreateDeserialized(Context, ID);
break;
case DECL_TYPEALIAS:
D = TypeAliasDecl::CreateDeserialized(Context, ID);
break;
case DECL_ENUM:
D = EnumDecl::CreateDeserialized(Context, ID);
break;
case DECL_RECORD:
D = RecordDecl::CreateDeserialized(Context, ID);
break;
case DECL_ENUM_CONSTANT:
D = EnumConstantDecl::CreateDeserialized(Context, ID);
break;
case DECL_FUNCTION:
D = FunctionDecl::CreateDeserialized(Context, ID);
break;
case DECL_LINKAGE_SPEC:
D = LinkageSpecDecl::CreateDeserialized(Context, ID);
break;
case DECL_LABEL:
D = LabelDecl::CreateDeserialized(Context, ID);
break;
case DECL_NAMESPACE:
D = NamespaceDecl::CreateDeserialized(Context, ID);
break;
case DECL_NAMESPACE_ALIAS:
D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
break;
case DECL_USING:
D = UsingDecl::CreateDeserialized(Context, ID);
break;
case DECL_USING_SHADOW:
D = UsingShadowDecl::CreateDeserialized(Context, ID);
break;
case DECL_USING_DIRECTIVE:
D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
break;
case DECL_UNRESOLVED_USING_VALUE:
D = UnresolvedUsingValueDecl::CreateDeserialized(Context, ID);
break;
case DECL_UNRESOLVED_USING_TYPENAME:
D = UnresolvedUsingTypenameDecl::CreateDeserialized(Context, ID);
break;
case DECL_CXX_RECORD:
D = CXXRecordDecl::CreateDeserialized(Context, ID);
break;
case DECL_CXX_METHOD:
D = CXXMethodDecl::CreateDeserialized(Context, ID);
break;
case DECL_CXX_CONSTRUCTOR:
D = CXXConstructorDecl::CreateDeserialized(Context, ID);
break;
case DECL_CXX_DESTRUCTOR:
D = CXXDestructorDecl::CreateDeserialized(Context, ID);
break;
case DECL_CXX_CONVERSION:
D = CXXConversionDecl::CreateDeserialized(Context, ID);
break;
case DECL_ACCESS_SPEC:
D = AccessSpecDecl::CreateDeserialized(Context, ID);
break;
case DECL_FRIEND:
D = FriendDecl::CreateDeserialized(Context, ID);
break;
case DECL_FRIEND_TEMPLATE:
D = FriendTemplateDecl::CreateDeserialized(Context, ID);
break;
case DECL_CLASS_TEMPLATE:
D = ClassTemplateDecl::CreateDeserialized(Context, ID);
break;
case DECL_CLASS_TEMPLATE_SPECIALIZATION:
D = ClassTemplateSpecializationDecl::CreateDeserialized(Context, ID);
break;
case DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION:
D = ClassTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
break;
case DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION:
D = ClassScopeFunctionSpecializationDecl::CreateDeserialized(Context, ID);
break;
case DECL_FUNCTION_TEMPLATE:
D = FunctionTemplateDecl::CreateDeserialized(Context, ID);
break;
case DECL_TEMPLATE_TYPE_PARM:
D = TemplateTypeParmDecl::CreateDeserialized(Context, ID);
break;
case DECL_NON_TYPE_TEMPLATE_PARM:
D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID);
break;
case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK:
D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID, Record[Idx++]);
break;
case DECL_TEMPLATE_TEMPLATE_PARM:
D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID);
break;
case DECL_TYPE_ALIAS_TEMPLATE:
D = TypeAliasTemplateDecl::CreateDeserialized(Context, ID);
break;
case DECL_STATIC_ASSERT:
D = StaticAssertDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_METHOD:
D = ObjCMethodDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_INTERFACE:
D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_IVAR:
D = ObjCIvarDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_PROTOCOL:
D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_AT_DEFS_FIELD:
D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_CATEGORY:
D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_CATEGORY_IMPL:
D = ObjCCategoryImplDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_IMPLEMENTATION:
D = ObjCImplementationDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_COMPATIBLE_ALIAS:
D = ObjCCompatibleAliasDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_PROPERTY:
D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
break;
case DECL_OBJC_PROPERTY_IMPL:
D = ObjCPropertyImplDecl::CreateDeserialized(Context, ID);
break;
case DECL_FIELD:
D = FieldDecl::CreateDeserialized(Context, ID);
break;
case DECL_INDIRECTFIELD:
D = IndirectFieldDecl::CreateDeserialized(Context, ID);
break;
case DECL_VAR:
D = VarDecl::CreateDeserialized(Context, ID);
break;
case DECL_IMPLICIT_PARAM:
D = ImplicitParamDecl::CreateDeserialized(Context, ID);
break;
case DECL_PARM_VAR:
D = ParmVarDecl::CreateDeserialized(Context, ID);
break;
case DECL_FILE_SCOPE_ASM:
D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
break;
case DECL_BLOCK:
D = BlockDecl::CreateDeserialized(Context, ID);
break;
case DECL_CXX_BASE_SPECIFIERS:
Error("attempt to read a C++ base-specifier record as a declaration");
return 0;
case DECL_IMPORT:
// Note: last entry of the ImportDecl record is the number of stored source
// locations.
D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
break;
}
assert(D && "Unknown declaration reading AST file");
LoadedDecl(Index, D);
// Set the DeclContext before doing any deserialization, to make sure internal
// calls to Decl::getASTContext() by Decl's methods will find the
// TranslationUnitDecl without crashing.
D->setDeclContext(Context.getTranslationUnitDecl());
Reader.Visit(D);
// If this declaration is also a declaration context, get the
// offsets for its tables of lexical and visible declarations.
if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
if (Offsets.first || Offsets.second) {
if (Offsets.first != 0)
DC->setHasExternalLexicalStorage(true);
if (Offsets.second != 0)
DC->setHasExternalVisibleStorage(true);
if (ReadDeclContextStorage(*Loc.F, DeclsCursor, Offsets,
Loc.F->DeclContextInfos[DC]))
return 0;
}
// Now add the pending visible updates for this decl context, if it has any.
DeclContextVisibleUpdatesPending::iterator I =
PendingVisibleUpdates.find(ID);
if (I != PendingVisibleUpdates.end()) {
// There are updates. This means the context has external visible
// storage, even if the original stored version didn't.
DC->setHasExternalVisibleStorage(true);
DeclContextVisibleUpdates &U = I->second;
for (DeclContextVisibleUpdates::iterator UI = U.begin(), UE = U.end();
UI != UE; ++UI) {
UI->second->DeclContextInfos[DC].NameLookupTableData = UI->first;
}
PendingVisibleUpdates.erase(I);
}
}
assert(Idx == Record.size());
// Load any relevant update records.
loadDeclUpdateRecords(ID, D);
// Load the categories after recursive loading is finished.
if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D))
if (Class->isThisDeclarationADefinition())
loadObjCCategories(ID, Class);
// If we have deserialized a declaration that has a definition the
// AST consumer might need to know about, queue it.
// We don't pass it to the consumer immediately because we may be in recursive
// loading, and some declarations may still be initializing.
if (isConsumerInterestedIn(D))
InterestingDecls.push_back(D);
return D;
}
void ASTReader::loadDeclUpdateRecords(serialization::DeclID ID, Decl *D) {
// The declaration may have been modified by files later in the chain.
// If this is the case, read the record containing the updates from each file
// and pass it to ASTDeclReader to make the modifications.
DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
if (UpdI != DeclUpdateOffsets.end()) {
FileOffsetsTy &UpdateOffsets = UpdI->second;
for (FileOffsetsTy::iterator
I = UpdateOffsets.begin(), E = UpdateOffsets.end(); I != E; ++I) {
ModuleFile *F = I->first;
uint64_t Offset = I->second;
llvm::BitstreamCursor &Cursor = F->DeclsCursor;
SavedStreamPosition SavedPosition(Cursor);
Cursor.JumpToBit(Offset);
RecordData Record;
unsigned Code = Cursor.ReadCode();
unsigned RecCode = Cursor.ReadRecord(Code, Record);
(void)RecCode;
assert(RecCode == DECL_UPDATES && "Expected DECL_UPDATES record!");
unsigned Idx = 0;
ASTDeclReader Reader(*this, *F, Cursor, ID, 0, Record, Idx);
Reader.UpdateDecl(D, *F, Record);
}
}
}
namespace {
struct CompareLocalRedeclarationsInfoToID {
bool operator()(const LocalRedeclarationsInfo &X, DeclID Y) {
return X.FirstID < Y;
}
bool operator()(DeclID X, const LocalRedeclarationsInfo &Y) {
return X < Y.FirstID;
}
bool operator()(const LocalRedeclarationsInfo &X,
const LocalRedeclarationsInfo &Y) {
return X.FirstID < Y.FirstID;
}
bool operator()(DeclID X, DeclID Y) {
return X < Y;
}
};
/// \brief Module visitor class that finds all of the redeclarations of a
///
class RedeclChainVisitor {
ASTReader &Reader;
SmallVectorImpl<DeclID> &SearchDecls;
llvm::SmallPtrSet<Decl *, 16> &Deserialized;
GlobalDeclID CanonID;
llvm::SmallVector<Decl *, 4> Chain;
public:
RedeclChainVisitor(ASTReader &Reader, SmallVectorImpl<DeclID> &SearchDecls,
llvm::SmallPtrSet<Decl *, 16> &Deserialized,
GlobalDeclID CanonID)
: Reader(Reader), SearchDecls(SearchDecls), Deserialized(Deserialized),
CanonID(CanonID) {
for (unsigned I = 0, N = SearchDecls.size(); I != N; ++I)
addToChain(Reader.GetDecl(SearchDecls[I]));
}
static bool visit(ModuleFile &M, bool Preorder, void *UserData) {
if (Preorder)
return false;
return static_cast<RedeclChainVisitor *>(UserData)->visit(M);
}
void addToChain(Decl *D) {
if (!D)
return;
if (Deserialized.count(D)) {
Deserialized.erase(D);
Chain.push_back(D);
}
}
void searchForID(ModuleFile &M, GlobalDeclID GlobalID) {
// Map global ID of the first declaration down to the local ID
// used in this module file.
DeclID ID = Reader.mapGlobalIDToModuleFileGlobalID(M, GlobalID);
if (!ID)
return;
// Perform a binary search to find the local redeclarations for this
// declaration (if any).
const LocalRedeclarationsInfo *Result
= std::lower_bound(M.RedeclarationsMap,
M.RedeclarationsMap + M.LocalNumRedeclarationsInMap,
ID, CompareLocalRedeclarationsInfoToID());
if (Result == M.RedeclarationsMap + M.LocalNumRedeclarationsInMap ||
Result->FirstID != ID) {
// If we have a previously-canonical singleton declaration that was
// merged into another redeclaration chain, create a trivial chain
// for this single declaration so that it will get wired into the
// complete redeclaration chain.
if (GlobalID != CanonID &&
GlobalID - NUM_PREDEF_DECL_IDS >= M.BaseDeclID &&
GlobalID - NUM_PREDEF_DECL_IDS < M.BaseDeclID + M.LocalNumDecls) {
addToChain(Reader.GetDecl(GlobalID));
}
return;
}
// Dig out all of the redeclarations.
unsigned Offset = Result->Offset;
unsigned N = M.RedeclarationChains[Offset];
M.RedeclarationChains[Offset++] = 0; // Don't try to deserialize again
for (unsigned I = 0; I != N; ++I)
addToChain(Reader.GetLocalDecl(M, M.RedeclarationChains[Offset++]));
}
bool visit(ModuleFile &M) {
// Visit each of the declarations.
for (unsigned I = 0, N = SearchDecls.size(); I != N; ++I)
searchForID(M, SearchDecls[I]);
return false;
}
ArrayRef<Decl *> getChain() const {
return Chain;
}
};
}
void ASTReader::loadPendingDeclChain(serialization::GlobalDeclID ID) {
Decl *D = GetDecl(ID);
Decl *CanonDecl = D->getCanonicalDecl();
// Determine the set of declaration IDs we'll be searching for.
llvm::SmallVector<DeclID, 1> SearchDecls;
GlobalDeclID CanonID = 0;
if (D == CanonDecl) {
SearchDecls.push_back(ID); // Always first.
CanonID = ID;
}
MergedDeclsMap::iterator MergedPos = combineStoredMergedDecls(CanonDecl, ID);
if (MergedPos != MergedDecls.end())
SearchDecls.append(MergedPos->second.begin(), MergedPos->second.end());
// Build up the list of redeclarations.
RedeclChainVisitor Visitor(*this, SearchDecls, RedeclsDeserialized, CanonID);
ModuleMgr.visitDepthFirst(&RedeclChainVisitor::visit, &Visitor);
// Retrieve the chains.
ArrayRef<Decl *> Chain = Visitor.getChain();
if (Chain.empty())
return;
// Hook up the chains.
Decl *MostRecent = CanonDecl->getMostRecentDecl();
for (unsigned I = 0, N = Chain.size(); I != N; ++I) {
if (Chain[I] == CanonDecl)
continue;
ASTDeclReader::attachPreviousDecl(Chain[I], MostRecent);
MostRecent = Chain[I];
}
ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
}
namespace {
struct CompareObjCCategoriesInfo {
bool operator()(const ObjCCategoriesInfo &X, DeclID Y) {
return X.DefinitionID < Y;
}
bool operator()(DeclID X, const ObjCCategoriesInfo &Y) {
return X < Y.DefinitionID;
}
bool operator()(const ObjCCategoriesInfo &X,
const ObjCCategoriesInfo &Y) {
return X.DefinitionID < Y.DefinitionID;
}
bool operator()(DeclID X, DeclID Y) {
return X < Y;
}
};
/// \brief Given an ObjC interface, goes through the modules and links to the
/// interface all the categories for it.
class ObjCCategoriesVisitor {
ASTReader &Reader;
serialization::GlobalDeclID InterfaceID;
ObjCInterfaceDecl *Interface;
llvm::SmallPtrSet<ObjCCategoryDecl *, 16> &Deserialized;
unsigned PreviousGeneration;
ObjCCategoryDecl *Tail;
llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
void add(ObjCCategoryDecl *Cat) {
// Only process each category once.
if (!Deserialized.count(Cat))
return;
Deserialized.erase(Cat);
// Check for duplicate categories.
if (Cat->getDeclName()) {
ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
if (Existing &&
Reader.getOwningModuleFile(Existing)
!= Reader.getOwningModuleFile(Cat)) {
// FIXME: We should not warn for duplicates in diamond:
//
// MT //
// / \ //
// ML MR //
// \ / //
// MB //
//
// If there are duplicates in ML/MR, there will be warning when
// creating MB *and* when importing MB. We should not warn when
// importing.
Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
<< Interface->getDeclName() << Cat->getDeclName();
Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
} else if (!Existing) {
// Record this category.
Existing = Cat;
}
}
// Add this category to the end of the chain.
if (Tail)
ASTDeclReader::setNextObjCCategory(Tail, Cat);
else
Interface->setCategoryList(Cat);
Tail = Cat;
}
public:
ObjCCategoriesVisitor(ASTReader &Reader,
serialization::GlobalDeclID InterfaceID,
ObjCInterfaceDecl *Interface,
llvm::SmallPtrSet<ObjCCategoryDecl *, 16> &Deserialized,
unsigned PreviousGeneration)
: Reader(Reader), InterfaceID(InterfaceID), Interface(Interface),
Deserialized(Deserialized), PreviousGeneration(PreviousGeneration),
Tail(0)
{
// Populate the name -> category map with the set of known categories.
for (ObjCCategoryDecl *Cat = Interface->getCategoryList(); Cat;
Cat = Cat->getNextClassCategory()) {
if (Cat->getDeclName())
NameCategoryMap[Cat->getDeclName()] = Cat;
// Keep track of the tail of the category list.
Tail = Cat;
}
}
static bool visit(ModuleFile &M, void *UserData) {
return static_cast<ObjCCategoriesVisitor *>(UserData)->visit(M);
}
bool visit(ModuleFile &M) {
// If we've loaded all of the category information we care about from
// this module file, we're done.
if (M.Generation <= PreviousGeneration)
return true;
// Map global ID of the definition down to the local ID used in this
// module file. If there is no such mapping, we'll find nothing here
// (or in any module it imports).
DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
if (!LocalID)
return true;
// Perform a binary search to find the local redeclarations for this
// declaration (if any).
const ObjCCategoriesInfo *Result
= std::lower_bound(M.ObjCCategoriesMap,
M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap,
LocalID, CompareObjCCategoriesInfo());
if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
Result->DefinitionID != LocalID) {
// We didn't find anything. If the class definition is in this module
// file, then the module files it depends on cannot have any categories,
// so suppress further lookup.
return Reader.isDeclIDFromModule(InterfaceID, M);
}
// We found something. Dig out all of the categories.
unsigned Offset = Result->Offset;
unsigned N = M.ObjCCategories[Offset];
M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
for (unsigned I = 0; I != N; ++I)
add(cast_or_null<ObjCCategoryDecl>(
Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
return true;
}
};
}
void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
ObjCInterfaceDecl *D,
unsigned PreviousGeneration) {
ObjCCategoriesVisitor Visitor(*this, ID, D, CategoriesDeserialized,
PreviousGeneration);
ModuleMgr.visit(ObjCCategoriesVisitor::visit, &Visitor);
}
void ASTDeclReader::UpdateDecl(Decl *D, ModuleFile &ModuleFile,
const RecordData &Record) {
unsigned Idx = 0;
while (Idx < Record.size()) {
switch ((DeclUpdateKind)Record[Idx++]) {
case UPD_CXX_ADDED_IMPLICIT_MEMBER:
cast<CXXRecordDecl>(D)->addedMember(Reader.ReadDecl(ModuleFile, Record, Idx));
break;
case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
// It will be added to the template's specializations set when loaded.
(void)Reader.ReadDecl(ModuleFile, Record, Idx);
break;
case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: {
NamespaceDecl *Anon
= Reader.ReadDeclAs<NamespaceDecl>(ModuleFile, Record, Idx);
// Each module has its own anonymous namespace, which is disjoint from
// any other module's anonymous namespaces, so don't attach the anonymous
// namespace at all.
if (ModuleFile.Kind != MK_Module) {
if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(D))
TU->setAnonymousNamespace(Anon);
else
cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
}
break;
}
case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER:
cast<VarDecl>(D)->getMemberSpecializationInfo()->setPointOfInstantiation(
Reader.ReadSourceLocation(ModuleFile, Record, Idx));
break;
}
}
}