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android / platform / external / clang / b6e5fe3cae9bf456f084c555c3ecc256f4181cc5 / . / 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);
void InitializeCXXDefinitionData(CXXRecordDecl *D,
CXXRecordDecl *DefinitionDecl,
const RecordData &Record, unsigned &Idx);
/// \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.
D->setDeclContext(
cast_or_null<DeclContext>(
Reader.GetDecl(DeclContextIDForTemplateParmDecl)));
D->setLexicalDeclContext(
cast_or_null<DeclContext>(
Reader.GetDecl(LexicalDeclContextIDForTemplateParmDecl)));
}
}
void ASTDeclReader::VisitDecl(Decl *D) {
if (D->isTemplateParameter()) {
// We don't want to deserialize the DeclContext of a template
// parameter immediately, because the template parameter might be
// used in the formulation of its DeclContext. Use the translation
// unit DeclContext as a placeholder.
DeclContextIDForTemplateParmDecl = ReadDeclID(Record, Idx);
LexicalDeclContextIDForTemplateParmDecl = ReadDeclID(Record, Idx);
D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
} else {
D->setDeclContext(ReadDeclAs<DeclContext>(Record, Idx));
D->setLexicalDeclContext(ReadDeclAs<DeclContext>(Record, Idx));
}
D->setLocation(Reader.ReadSourceLocation(F, RawLocation));
D->setInvalidDecl(Record[Idx++]);
if (Record[Idx++]) { // hasAttrs
AttrVec Attrs;
Reader.ReadAttributes(F, Attrs, Record, Idx);
D->setAttrs(Attrs);
}
D->setImplicit(Record[Idx++]);
D->setUsed(Record[Idx++]);
D->setReferenced(Record[Idx++]);
D->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)) {
// 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++]) {
default: llvm_unreachable("Unhandled TemplatedKind!");
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);
ObjCInterfaceDecl *Def = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx);
if (ID == Def) {
// Read the definition.
ID->allocateDefinitionData();
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());
// Read the ivars.
unsigned NumIvars = Record[Idx++];
SmallVector<ObjCIvarDecl *, 16> IVars;
IVars.reserve(NumIvars);
for (unsigned I = 0; I != NumIvars; ++I)
IVars.push_back(ReadDeclAs<ObjCIvarDecl>(Record, Idx));
// Read the categories.
ID->setCategoryList(ReadDeclAs<ObjCCategoryDecl>(Record, Idx));
// We will rebuild this list lazily.
ID->setIvarList(0);
// Note that we have deserialized a definition.
Reader.PendingDefinitions.insert(ID);
} else if (Def && Def->Data) {
ID->Data = Def->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);
ObjCProtocolDecl *Def = ReadDeclAs<ObjCProtocolDecl>(Record, Idx);
if (PD == Def) {
// Read the definition.
PD->allocateDefinitionData();
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 if (Def && Def->Data) {
PD->Data = Def->Data;
}
}
void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
VisitFieldDecl(FD);
}
void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
VisitObjCContainerDecl(CD);
CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>(Record, Idx);
unsigned NumProtoRefs = Record[Idx++];
SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
ProtoRefs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>(Record, Idx));
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoLocs.push_back(ReadSourceLocation(Record, Idx));
CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
Reader.getContext());
CD->NextClassCategory = ReadDeclAs<ObjCCategoryDecl>(Record, Idx);
CD->setHasSynthBitfield(Record[Idx++]);
CD->setCategoryNameLoc(ReadSourceLocation(Record, Idx));
}
void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
VisitNamedDecl(CAD);
CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
}
void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
VisitNamedDecl(D);
D->setAtLoc(ReadSourceLocation(Record, Idx));
D->setType(GetTypeSourceInfo(Record, Idx));
// FIXME: stable encoding
D->setPropertyAttributes(
(ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
D->setPropertyAttributesAsWritten(
(ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
// FIXME: stable encoding
D->setPropertyImplementation(
(ObjCPropertyDecl::PropertyControl)Record[Idx++]);
D->setGetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector());
D->setSetterName(Reader.ReadDeclarationName(F,Record, Idx).getObjCSelector());
D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx));
D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>(Record, Idx));
D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>(Record, Idx));
}
void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
VisitObjCContainerDecl(D);
D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
}
void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
VisitObjCImplDecl(D);
D->setIdentifier(Reader.GetIdentifierInfo(F, Record, Idx));
D->CategoryNameLoc = ReadSourceLocation(Record, Idx);
}
void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
VisitObjCImplDecl(D);
D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>(Record, Idx));
llvm::tie(D->IvarInitializers, D->NumIvarInitializers)
= Reader.ReadCXXCtorInitializers(F, Record, Idx);
D->setHasSynthBitfield(Record[Idx++]);
}
void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
VisitDecl(D);
D->setAtLoc(ReadSourceLocation(Record, Idx));
D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>(Record, Idx));
D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>(Record, Idx);
D->IvarLoc = ReadSourceLocation(Record, Idx);
D->setGetterCXXConstructor(Reader.ReadExpr(F));
D->setSetterCXXAssignment(Reader.ReadExpr(F));
}
void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
VisitDeclaratorDecl(FD);
FD->setMutable(Record[Idx++]);
int BitWidthOrInitializer = Record[Idx++];
if (BitWidthOrInitializer == 1)
FD->setBitWidth(Reader.ReadExpr(F));
else if (BitWidthOrInitializer == 2)
FD->setInClassInitializer(Reader.ReadExpr(F));
if (!FD->getDeclName()) {
if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>(Record, Idx))
Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
}
}
void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
VisitValueDecl(FD);
FD->ChainingSize = Record[Idx++];
assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
for (unsigned I = 0; I != FD->ChainingSize; ++I)
FD->Chaining[I] = ReadDeclAs<NamedDecl>(Record, Idx);
}
void ASTDeclReader::VisitVarDecl(VarDecl *VD) {
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.HasCXXDirectInit = Record[Idx++];
VD->VarDeclBits.ExceptionVar = Record[Idx++];
VD->VarDeclBits.NRVOVariable = Record[Idx++];
VD->VarDeclBits.CXXForRangeDecl = Record[Idx++];
VD->VarDeclBits.ARCPseudoStrong = Record[Idx++];
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);
if (Redecl.getFirstID() == ThisDeclID) {
// FIXME: If there's already an anonymous namespace, do we merge it with
// this one? Or do we, when loading modules, just forget about anonymous
// namespace entirely?
D->setAnonymousNamespace(ReadDeclAs<NamespaceDecl>(Record, Idx));
} 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 = ReadDeclAs<UsingShadowDecl>(Record, Idx);
D->setTypeName(Record[Idx++]);
if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>(Record, Idx))
Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
}
void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
VisitNamedDecl(D);
D->setTargetDecl(ReadDeclAs<NamedDecl>(Record, Idx));
D->UsingOrNextShadow = ReadDeclAs<NamedDecl>(Record, Idx);
UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>(Record, Idx);
if (Pattern)
Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
}
void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
VisitNamedDecl(D);
D->UsingLoc = ReadSourceLocation(Record, Idx);
D->NamespaceLoc = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
D->NominatedNamespace = ReadDeclAs<NamedDecl>(Record, Idx);
D->CommonAncestor = ReadDeclAs<DeclContext>(Record, Idx);
}
void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
VisitValueDecl(D);
D->setUsingLoc(ReadSourceLocation(Record, Idx));
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
ReadDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record, Idx);
}
void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
UnresolvedUsingTypenameDecl *D) {
VisitTypeDecl(D);
D->TypenameLocation = ReadSourceLocation(Record, Idx);
D->QualifierLoc = Reader.ReadNestedNameSpecifierLoc(F, Record, Idx);
}
void ASTDeclReader::ReadCXXDefinitionData(
struct CXXRecordDecl::DefinitionData &Data,
const RecordData &Record, unsigned &Idx) {
Data.UserDeclaredConstructor = Record[Idx++];
Data.UserDeclaredCopyConstructor = Record[Idx++];
Data.UserDeclaredMoveConstructor = Record[Idx++];
Data.UserDeclaredCopyAssignment = Record[Idx++];
Data.UserDeclaredMoveAssignment = Record[Idx++];
Data.UserDeclaredDestructor = Record[Idx++];
Data.Aggregate = Record[Idx++];
Data.PlainOldData = Record[Idx++];
Data.Empty = Record[Idx++];
Data.Polymorphic = Record[Idx++];
Data.Abstract = Record[Idx++];
Data.IsStandardLayout = Record[Idx++];
Data.HasNoNonEmptyBases = Record[Idx++];
Data.HasPrivateFields = Record[Idx++];
Data.HasProtectedFields = Record[Idx++];
Data.HasPublicFields = Record[Idx++];
Data.HasMutableFields = Record[Idx++];
Data.HasTrivialDefaultConstructor = Record[Idx++];
Data.HasConstexprNonCopyMoveConstructor = Record[Idx++];
Data.HasTrivialCopyConstructor = Record[Idx++];
Data.HasTrivialMoveConstructor = Record[Idx++];
Data.HasTrivialCopyAssignment = Record[Idx++];
Data.HasTrivialMoveAssignment = Record[Idx++];
Data.HasTrivialDestructor = Record[Idx++];
Data.HasNonLiteralTypeFieldsOrBases = Record[Idx++];
Data.ComputedVisibleConversions = Record[Idx++];
Data.UserProvidedDefaultConstructor = Record[Idx++];
Data.DeclaredDefaultConstructor = Record[Idx++];
Data.DeclaredCopyConstructor = Record[Idx++];
Data.DeclaredMoveConstructor = Record[Idx++];
Data.DeclaredCopyAssignment = Record[Idx++];
Data.DeclaredMoveAssignment = Record[Idx++];
Data.DeclaredDestructor = Record[Idx++];
Data.FailedImplicitMoveConstructor = Record[Idx++];
Data.FailedImplicitMoveAssignment = Record[Idx++];
Data.NumBases = Record[Idx++];
if (Data.NumBases)
Data.Bases = Reader.readCXXBaseSpecifiers(F, Record, Idx);
Data.NumVBases = Record[Idx++];
if (Data.NumVBases)
Data.VBases = Reader.readCXXBaseSpecifiers(F, Record, Idx);
Reader.ReadUnresolvedSet(F, Data.Conversions, Record, Idx);
Reader.ReadUnresolvedSet(F, Data.VisibleConversions, Record, Idx);
assert(Data.Definition && "Data.Definition should be already set!");
Data.FirstFriend = ReadDeclAs<FriendDecl>(Record, Idx);
}
void ASTDeclReader::InitializeCXXDefinitionData(CXXRecordDecl *D,
CXXRecordDecl *DefinitionDecl,
const RecordData &Record,
unsigned &Idx) {
ASTContext &C = Reader.getContext();
if (D == DefinitionDecl) {
D->DefinitionData = new (C) struct CXXRecordDecl::DefinitionData(D);
ReadCXXDefinitionData(*D->DefinitionData, Record, Idx);
// Note that we have deserialized a definition.
Reader.PendingDefinitions.insert(D);
} else if (DefinitionDecl && DefinitionDecl->DefinitionData) {
D->DefinitionData = DefinitionDecl->DefinitionData;
}
}
void ASTDeclReader::VisitCXXRecordDecl(CXXRecordDecl *D) {
VisitRecordDecl(D);
CXXRecordDecl *DefinitionDecl = ReadDeclAs<CXXRecordDecl>(Record, Idx);
InitializeCXXDefinitionData(D, DefinitionDecl, Record, Idx);
ASTContext &C = Reader.getContext();
enum CXXRecKind {
CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
};
switch ((CXXRecKind)Record[Idx++]) {
default:
llvm_unreachable("Out of sync with ASTDeclWriter::VisitCXXRecordDecl?");
case CXXRecNotTemplate:
break;
case CXXRecTemplate:
D->TemplateOrInstantiation = ReadDeclAs<ClassTemplateDecl>(Record, Idx);
break;
case CXXRecMemberSpecialization: {
CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>(Record, Idx);
TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
SourceLocation POI = ReadSourceLocation(Record, Idx);
MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
MSI->setPointOfInstantiation(POI);
D->TemplateOrInstantiation = MSI;
break;
}
}
// Load the key function to avoid deserializing every method so we can
// compute it.
if (D->IsCompleteDefinition) {
if (CXXMethodDecl *Key = ReadDeclAs<CXXMethodDecl>(Record, Idx))
C.KeyFunctions[D] = Key;
}
}
void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
VisitFunctionDecl(D);
unsigned NumOverridenMethods = Record[Idx++];
while (NumOverridenMethods--) {
// Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
// MD may be initializing.
if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>(Record, Idx))
Reader.getContext().addOverriddenMethod(D, MD);
}
}
void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
VisitCXXMethodDecl(D);
D->IsExplicitSpecified = Record[Idx++];
D->ImplicitlyDefined = Record[Idx++];
llvm::tie(D->CtorInitializers, D->NumCtorInitializers)
= Reader.ReadCXXCtorInitializers(F, Record, Idx);
}
void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
VisitCXXMethodDecl(D);
D->ImplicitlyDefined = Record[Idx++];
D->OperatorDelete = ReadDeclAs<FunctionDecl>(Record, Idx);
}
void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
VisitCXXMethodDecl(D);
D->IsExplicitSpecified = Record[Idx++];
}
void ASTDeclReader::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) {
// Initialize CommonOrPrev before VisitTemplateDecl so that getCommonPtr()
// can be used while this is still initializing.
enum RedeclKind { FirstDeclaration, FirstInFile, PointsToPrevious };
RedeclKind Kind = (RedeclKind)Record[Idx++];
// Determine the first declaration ID.
DeclID FirstDeclID;
switch (Kind) {
case FirstDeclaration: {
FirstDeclID = ThisDeclID;
// Since this is the first declaration of the template, fill in the
// information for the 'common' pointer.
if (D->CommonOrPrev.isNull()) {
RedeclarableTemplateDecl::CommonBase *Common
= D->newCommon(Reader.getContext());
Common->Latest = D;
D->CommonOrPrev = Common;
}
if (RedeclarableTemplateDecl *RTD
= ReadDeclAs<RedeclarableTemplateDecl>(Record, Idx)) {
assert(RTD->getKind() == D->getKind() &&
"InstantiatedFromMemberTemplate kind mismatch");
D->setInstantiatedFromMemberTemplateImpl(RTD);
if (Record[Idx++])
D->setMemberSpecialization();
}
break;
}
case FirstInFile:
case PointsToPrevious: {
FirstDeclID = ReadDeclID(Record, Idx);
DeclID PrevDeclID = ReadDeclID(Record, Idx);
RedeclarableTemplateDecl *FirstDecl
= cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(FirstDeclID));
// 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 and attached later on.
D->CommonOrPrev = FirstDecl;
if (Kind == PointsToPrevious) {
// Make a note that we need to wire up this declaration to its
// previous declaration, later. We don't need to do this for the first
// declaration in any given module file, because those will be wired
// together later.
Reader.PendingPreviousDecls.push_back(std::make_pair(D, PrevDeclID));
}
break;
}
}
VisitTemplateDecl(D);
D->IdentifierNamespace = Record[Idx++];
return RedeclarableResult(Reader, FirstDeclID);
}
void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
VisitRedeclarableTemplateDecl(D);
if (D->getPreviousDeclaration() == 0) {
// This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
// the specializations.
SmallVector<serialization::DeclID, 2> SpecIDs;
SpecIDs.push_back(0);
// Specializations.
unsigned Size = Record[Idx++];
SpecIDs[0] += Size;
for (unsigned I = 0; I != Size; ++I)
SpecIDs.push_back(ReadDeclID(Record, Idx));
// Partial specializations.
Size = Record[Idx++];
SpecIDs[0] += Size;
for (unsigned I = 0; I != Size; ++I)
SpecIDs.push_back(ReadDeclID(Record, Idx));
if (SpecIDs[0]) {
typedef serialization::DeclID DeclID;
ClassTemplateDecl::Common *CommonPtr = D->getCommonPtr();
CommonPtr->LazySpecializations
= new (Reader.getContext()) DeclID [SpecIDs.size()];
memcpy(CommonPtr->LazySpecializations, SpecIDs.data(),
SpecIDs.size() * sizeof(DeclID));
}
// InjectedClassNameType is computed.
}
}
void ASTDeclReader::VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D) {
VisitCXXRecordDecl(D);
ASTContext &C = Reader.getContext();
if (Decl *InstD = ReadDecl(Record, Idx)) {
if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
D->SpecializedTemplate = CTD;
} else {
SmallVector<TemplateArgument, 8> TemplArgs;
Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
TemplateArgumentList *ArgList
= TemplateArgumentList::CreateCopy(C, TemplArgs.data(),
TemplArgs.size());
ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
= new (C) ClassTemplateSpecializationDecl::
SpecializedPartialSpecialization();
PS->PartialSpecialization
= cast<ClassTemplatePartialSpecializationDecl>(InstD);
PS->TemplateArgs = ArgList;
D->SpecializedTemplate = PS;
}
}
// Explicit info.
if (TypeSourceInfo *TyInfo = GetTypeSourceInfo(Record, Idx)) {
ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
= new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
ExplicitInfo->TypeAsWritten = TyInfo;
ExplicitInfo->ExternLoc = ReadSourceLocation(Record, Idx);
ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation(Record, Idx);
D->ExplicitInfo = ExplicitInfo;
}
SmallVector<TemplateArgument, 8> TemplArgs;
Reader.ReadTemplateArgumentList(TemplArgs, F, Record, Idx);
D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs.data(),
TemplArgs.size());
D->PointOfInstantiation = ReadSourceLocation(Record, Idx);
D->SpecializationKind = (TemplateSpecializationKind)Record[Idx++];
if (D->isCanonicalDecl()) { // It's kept in the folding set.
ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>(Record,Idx);
if (ClassTemplatePartialSpecializationDecl *Partial
= dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
CanonPattern->getCommonPtr()->PartialSpecializations.InsertNode(Partial);
} else {
CanonPattern->getCommonPtr()->Specializations.InsertNode(D);
}
}
}
void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
ClassTemplatePartialSpecializationDecl *D) {
VisitClassTemplateSpecializationDecl(D);
ASTContext &C = Reader.getContext();
D->TemplateParams = Reader.ReadTemplateParameterList(F, Record, Idx);
unsigned NumArgs = Record[Idx++];
if (NumArgs) {
D->NumArgsAsWritten = NumArgs;
D->ArgsAsWritten = new (C) TemplateArgumentLoc[NumArgs];
for (unsigned i=0; i != NumArgs; ++i)
D->ArgsAsWritten[i] = Reader.ReadTemplateArgumentLoc(F, Record, Idx);
}
D->SequenceNumber = Record[Idx++];
// These are read/set from/to the first declaration.
if (D->getPreviousDeclaration() == 0) {
D->InstantiatedFromMember.setPointer(
ReadDeclAs<ClassTemplatePartialSpecializationDecl>(Record, Idx));
D->InstantiatedFromMember.setInt(Record[Idx++]);
}
}
void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
ClassScopeFunctionSpecializationDecl *D) {
VisitDecl(D);
D->Specialization = ReadDeclAs<CXXMethodDecl>(Record, Idx);
}
void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
VisitRedeclarableTemplateDecl(D);
if (D->getPreviousDeclaration() == 0) {
// This FunctionTemplateDecl owns a CommonPtr; read it.
// Read the function specialization declarations.
// FunctionTemplateDecl's FunctionTemplateSpecializationInfos are filled
// when reading the specialized FunctionDecl.
unsigned NumSpecs = Record[Idx++];
while (NumSpecs--)
(void)ReadDecl(Record, Idx);
}
}
void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
VisitTypeDecl(D);
D->setDeclaredWithTypename(Record[Idx++]);
bool Inherited = Record[Idx++];
TypeSourceInfo *DefArg = GetTypeSourceInfo(Record, Idx);
D->setDefaultArgument(DefArg, Inherited);
}
void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
VisitDeclaratorDecl(D);
// TemplateParmPosition.
D->setDepth(Record[Idx++]);
D->setPosition(Record[Idx++]);
if (D->isExpandedParameterPack()) {
void **Data = reinterpret_cast<void **>(D + 1);
for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
Data[2*I] = Reader.readType(F, Record, Idx).getAsOpaquePtr();
Data[2*I + 1] = GetTypeSourceInfo(Record, Idx);
}
} else {
// Rest of NonTypeTemplateParmDecl.
D->ParameterPack = Record[Idx++];
if (Record[Idx++]) {
Expr *DefArg = Reader.ReadExpr(F);
bool Inherited = Record[Idx++];
D->setDefaultArgument(DefArg, Inherited);
}
}
}
void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
VisitTemplateDecl(D);
// TemplateParmPosition.
D->setDepth(Record[Idx++]);
D->setPosition(Record[Idx++]);
// Rest of TemplateTemplateParmDecl.
TemplateArgumentLoc Arg = Reader.ReadTemplateArgumentLoc(F, Record, Idx);
bool IsInherited = Record[Idx++];
D->setDefaultArgument(Arg, IsInherited);
D->ParameterPack = Record[Idx++];
}
void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
VisitRedeclarableTemplateDecl(D);
}
void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
VisitDecl(D);
D->AssertExpr = Reader.ReadExpr(F);
D->Message = cast<StringLiteral>(Reader.ReadExpr(F));
D->RParenLoc = ReadSourceLocation(Record, Idx);
}
std::pair<uint64_t, uint64_t>
ASTDeclReader::VisitDeclContext(DeclContext *DC) {
uint64_t LexicalOffset = Record[Idx++];
uint64_t VisibleOffset = Record[Idx++];
return std::make_pair(LexicalOffset, VisibleOffset);
}
template <typename T>
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
enum RedeclKind { FirstDeclaration = 0, FirstInFile, PointsToPrevious };
RedeclKind Kind = (RedeclKind)Record[Idx++];
DeclID FirstDeclID;
switch (Kind) {
case FirstDeclaration:
FirstDeclID = ThisDeclID;
break;
case FirstInFile:
case PointsToPrevious: {
FirstDeclID = ReadDeclID(Record, Idx);
DeclID PrevDeclID = ReadDeclID(Record, Idx);
T *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
// 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);
if (Kind == PointsToPrevious) {
// Make a note that we need to wire up this declaration to its
// previous declaration, later. We don't need to do this for the first
// declaration in any given module file, because those will be wired
// together later.
Reader.PendingPreviousDecls.push_back(std::make_pair(static_cast<T*>(D),
PrevDeclID));
}
break;
}
}
// The result structure takes care of 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);
// 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 is in 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());
}
// FIXME: Many other cases to implement.
return false;
}
ASTDeclReader::FindExistingResult::~FindExistingResult() {
if (!AddResult)
return;
DeclContext *DC = New->getDeclContext()->getRedeclContext();
if (DC->isTranslationUnit() && Reader.SemaObj) {
if (!Existing) {
Reader.SemaObj->IdResolver.tryAddTopLevelDecl(New, New->getDeclName());
}
}
}
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);
}
}
// FIXME: Search in the DeclContext.
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->CommonOrPrev = 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->getCommonPtr()->Latest = 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);
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 category chain after recursive loading is finished.
if (ObjCChainedCategoriesInterfaces.count(ID))
PendingChainedObjCCategories.push_back(
std::make_pair(cast<ObjCInterfaceDecl>(D), ID));
// 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;
GlobalDeclID CanonID;
llvm::SmallVector<std::pair<Decl *, Decl *>, 4> Chains;
public:
RedeclChainVisitor(ASTReader &Reader, SmallVectorImpl<DeclID> &SearchDecls,
GlobalDeclID CanonID)
: Reader(Reader), SearchDecls(SearchDecls), CanonID(CanonID) { }
static bool visit(ModuleFile &M, bool Preorder, void *UserData) {
if (Preorder)
return false;
return static_cast<RedeclChainVisitor *>(UserData)->visit(M);
}
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.RedeclarationsInfo,
M.RedeclarationsInfo + M.LocalNumRedeclarationsInfos,
ID, CompareLocalRedeclarationsInfoToID());
if (Result == M.RedeclarationsInfo + M.LocalNumRedeclarationsInfos ||
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) {
if (Decl *D = Reader.GetDecl(GlobalID))
Chains.push_back(std::make_pair(D, D));
}
return;
}
// Dig out the starting/ending declarations.
Decl *FirstLocalDecl = Reader.GetLocalDecl(M, Result->FirstLocalID);
Decl *LastLocalDecl = Reader.GetLocalDecl(M, Result->LastLocalID);
if (!FirstLocalDecl || !LastLocalDecl)
return;
// Append this redeclaration chain to the list.
Chains.push_back(std::make_pair(FirstLocalDecl, LastLocalDecl));
}
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<std::pair<Decl *, Decl *> > getChains() const {
return Chains;
}
void addParsed(Decl *FirstParsedDecl, Decl *LastParsedDecl) {
Chains.push_back(std::make_pair(FirstParsedDecl, LastParsedDecl));
}
};
}
/// \brief Retrieve the previous declaration to D.
static Decl *getPreviousDecl(Decl *D) {
if (TagDecl *TD = dyn_cast<TagDecl>(D))
return TD->getPreviousDeclaration();
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
return FD->getPreviousDeclaration();
if (VarDecl *VD = dyn_cast<VarDecl>(D))
return VD->getPreviousDeclaration();
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D))
return TD->getPreviousDeclaration();
if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
return ID->getPreviousDeclaration();
if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
return PD->getPreviousDeclaration();
if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(D))
return ND->getPreviousDeclaration();
return cast<RedeclarableTemplateDecl>(D)->getPreviousDeclaration();
}
/// \brief Retrieve the most recent declaration of D.
static Decl *getMostRecentDecl(Decl *D) {
if (TagDecl *TD = dyn_cast<TagDecl>(D))
return TD->getMostRecentDeclaration();
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
return FD->getMostRecentDeclaration();
if (VarDecl *VD = dyn_cast<VarDecl>(D))
return VD->getMostRecentDeclaration();
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D))
return TD->getMostRecentDeclaration();
if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
return ID->getMostRecentDeclaration();
if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
return PD->getMostRecentDeclaration();
if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(D))
return ND->getMostRecentDeclaration();
return cast<RedeclarableTemplateDecl>(D)->getMostRecentDeclaration();
}
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 redeclaration chains.
RedeclChainVisitor Visitor(*this, SearchDecls, CanonID);
ModuleMgr.visitDepthFirst(&RedeclChainVisitor::visit, &Visitor);
// Retrieve the chains.
ArrayRef<std::pair<Decl *, Decl *> > Chains = Visitor.getChains();
if (Chains.empty())
return;
// Capture all of the parsed declarations and put them at the end.
Decl *MostRecent = getMostRecentDecl(CanonDecl);
Decl *FirstParsed = MostRecent;
if (CanonDecl != MostRecent && !MostRecent->isFromASTFile()) {
Decl *Current = MostRecent;
while (Decl *Prev = getPreviousDecl(Current)) {
if (Prev == CanonDecl)
break;
if (Prev->isFromASTFile()) {
Current = Prev;
continue;
}
// Chain all of the parsed declarations together.
ASTDeclReader::attachPreviousDecl(FirstParsed, Prev);
FirstParsed = Prev;
Current = Prev;
}
Visitor.addParsed(FirstParsed, MostRecent);
}
// Hook up the separate chains.
Chains = Visitor.getChains();
if (Chains[0].first != CanonDecl)
ASTDeclReader::attachPreviousDecl(Chains[0].first, CanonDecl);
for (unsigned I = 1, N = Chains.size(); I != N; ++I)
ASTDeclReader::attachPreviousDecl(Chains[I].first, Chains[I-1].second);
ASTDeclReader::attachLatestDecl(CanonDecl, Chains.back().second);
}
namespace {
/// \brief Given an ObjC interface, goes through the modules and links to the
/// interface all the categories for it.
class ObjCChainedCategoriesVisitor {
ASTReader &Reader;
serialization::GlobalDeclID InterfaceID;
ObjCInterfaceDecl *Interface;
ObjCCategoryDecl *GlobHeadCat, *GlobTailCat;
llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
public:
ObjCChainedCategoriesVisitor(ASTReader &Reader,
serialization::GlobalDeclID InterfaceID,
ObjCInterfaceDecl *Interface)
: Reader(Reader), InterfaceID(InterfaceID), Interface(Interface),
GlobHeadCat(0), GlobTailCat(0) { }
static bool visit(ModuleFile &M, void *UserData) {
return static_cast<ObjCChainedCategoriesVisitor *>(UserData)->visit(M);
}
bool visit(ModuleFile &M) {
if (Reader.isDeclIDFromModule(InterfaceID, M))
return true; // We reached the module where the interface originated
// from. Stop traversing the imported modules.
ModuleFile::ChainedObjCCategoriesMap::iterator
I = M.ChainedObjCCategories.find(InterfaceID);
if (I == M.ChainedObjCCategories.end())
return false;
ObjCCategoryDecl *
HeadCat = Reader.GetLocalDeclAs<ObjCCategoryDecl>(M, I->second.first);
ObjCCategoryDecl *
TailCat = Reader.GetLocalDeclAs<ObjCCategoryDecl>(M, I->second.second);
addCategories(HeadCat, TailCat);
return false;
}
void addCategories(ObjCCategoryDecl *HeadCat,
ObjCCategoryDecl *TailCat = 0) {
if (!HeadCat) {
assert(!TailCat);
return;
}
if (!TailCat) {
TailCat = HeadCat;
while (TailCat->getNextClassCategory())
TailCat = TailCat->getNextClassCategory();
}
if (!GlobHeadCat) {
GlobHeadCat = HeadCat;
GlobTailCat = TailCat;
} else {
ASTDeclReader::setNextObjCCategory(GlobTailCat, HeadCat);
GlobTailCat = TailCat;
}
llvm::DenseSet<DeclarationName> Checked;
for (ObjCCategoryDecl *Cat = HeadCat,
*CatEnd = TailCat->getNextClassCategory();
Cat != CatEnd; Cat = Cat->getNextClassCategory()) {
if (Checked.count(Cat->getDeclName()))
continue;
Checked.insert(Cat->getDeclName());
checkForDuplicate(Cat);
}
}
/// \brief Warns for duplicate categories that come from different modules.
void checkForDuplicate(ObjCCategoryDecl *Cat) {
DeclarationName Name = Cat->getDeclName();
// Find the top category with the same name. We do not want to warn for
// duplicates along the established chain because there were already
// warnings for them when the module was created. We only want to warn for
// duplicates between non-dependent modules:
//
// MT //
// / \ //
// ML MR //
//
// We want to warn for duplicates between ML and MR,not between ML and MT.
//
// FIXME: We should not warn for duplicates in diamond:
//
// MT //
// / \ //
// ML MR //
// \ / //
// MB //
//
// If there are duplicates in ML/MR, there will be warning when creating
// MB *and* when importing MB. We should not warn when importing.
for (ObjCCategoryDecl *Next = Cat->getNextClassCategory(); Next;
Next = Next->getNextClassCategory()) {
if (Next->getDeclName() == Name)
Cat = Next;
}
ObjCCategoryDecl *&PrevCat = NameCategoryMap[Name];
if (!PrevCat)
PrevCat = Cat;
if (PrevCat != Cat) {
Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
<< Interface->getDeclName() << Name;
Reader.Diag(PrevCat->getLocation(), diag::note_previous_definition);
}
}
ObjCCategoryDecl *getHeadCategory() const { return GlobHeadCat; }
};
}
void ASTReader::loadObjCChainedCategories(serialization::GlobalDeclID ID,
ObjCInterfaceDecl *D) {
ObjCChainedCategoriesVisitor Visitor(*this, ID, D);
ModuleMgr.visit(ObjCChainedCategoriesVisitor::visit, &Visitor);
// Also add the categories that the interface already links to.
Visitor.addCategories(D->getCategoryList());
D->setCategoryList(Visitor.getHeadCategory());
}
void ASTDeclReader::UpdateDecl(Decl *D, ModuleFile &ModuleFile,
const RecordData &Record) {
unsigned Idx = 0;
while (Idx < Record.size()) {
switch ((DeclUpdateKind)Record[Idx++]) {
case UPD_CXX_SET_DEFINITIONDATA: {
CXXRecordDecl *RD = cast<CXXRecordDecl>(D);
CXXRecordDecl *DefinitionDecl
= Reader.ReadDeclAs<CXXRecordDecl>(ModuleFile, Record, Idx);
assert(!RD->DefinitionData && "DefinitionData is already set!");
InitializeCXXDefinitionData(RD, DefinitionDecl, Record, Idx);
break;
}
case UPD_CXX_ADDED_IMPLICIT_MEMBER:
cast<CXXRecordDecl>(D)->addedMember(Reader.ReadDecl(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);
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;
case UPD_OBJC_SET_CLASS_DEFINITIONDATA: {
ObjCInterfaceDecl *ID = cast<ObjCInterfaceDecl>(D);
ObjCInterfaceDecl *Def
= Reader.ReadDeclAs<ObjCInterfaceDecl>(ModuleFile, Record, Idx);
if (Def->Data)
ID->Data = Def->Data;
break;
}
case UPD_OBJC_SET_PROTOCOL_DEFINITIONDATA: {
ObjCProtocolDecl *ID = cast<ObjCProtocolDecl>(D);
ObjCProtocolDecl *Def
= Reader.ReadDeclAs<ObjCProtocolDecl>(ModuleFile, Record, Idx);
if (Def->Data)
ID->Data = Def->Data;
break;
}
}
}
}