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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 "ASTReaderInternals.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DeclVisitor.h"
#include "clang/AST/Expr.h"
#include "clang/Sema/IdentifierResolver.h"
#include "clang/Sema/SemaDiagnostic.h"
#include "clang/Serialization/ASTReader.h"
#include "llvm/Support/SaveAndRestore.h"
using namespace clang;
using namespace clang::serialization;
//===----------------------------------------------------------------------===//
// Declaration deserialization
//===----------------------------------------------------------------------===//
namespace clang {
class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
ASTReader &Reader;
ASTRecordReader &Record;
ASTReader::RecordLocation Loc;
const DeclID ThisDeclID;
const SourceLocation ThisDeclLoc;
typedef ASTReader::RecordData RecordData;
TypeID TypeIDForTypeDecl;
unsigned AnonymousDeclNumber;
GlobalDeclID NamedDeclForTagDecl;
IdentifierInfo *TypedefNameForLinkage;
bool HasPendingBody;
///\brief A flag to carry the information for a decl from the entity is
/// used. We use it to delay the marking of the canonical decl as used until
/// the entire declaration is deserialized and merged.
bool IsDeclMarkedUsed;
uint64_t GetCurrentCursorOffset();
uint64_t ReadLocalOffset() {
uint64_t LocalOffset = Record.readInt();
assert(LocalOffset < Loc.Offset && "offset point after current record");
return LocalOffset ? Loc.Offset - LocalOffset : 0;
}
uint64_t ReadGlobalOffset() {
uint64_t Local = ReadLocalOffset();
return Local ? Record.getGlobalBitOffset(Local) : 0;
}
SourceLocation ReadSourceLocation() {
return Record.readSourceLocation();
}
SourceRange ReadSourceRange() {
return Record.readSourceRange();
}
TypeSourceInfo *GetTypeSourceInfo() {
return Record.getTypeSourceInfo();
}
serialization::DeclID ReadDeclID() {
return Record.readDeclID();
}
std::string ReadString() {
return Record.readString();
}
void ReadDeclIDList(SmallVectorImpl<DeclID> &IDs) {
for (unsigned I = 0, Size = Record.readInt(); I != Size; ++I)
IDs.push_back(ReadDeclID());
}
Decl *ReadDecl() {
return Record.readDecl();
}
template<typename T>
T *ReadDeclAs() {
return Record.readDeclAs<T>();
}
void ReadQualifierInfo(QualifierInfo &Info) {
Record.readQualifierInfo(Info);
}
void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name) {
Record.readDeclarationNameLoc(DNLoc, Name);
}
serialization::SubmoduleID readSubmoduleID() {
if (Record.getIdx() == Record.size())
return 0;
return Record.getGlobalSubmoduleID(Record.readInt());
}
Module *readModule() {
return Record.getSubmodule(readSubmoduleID());
}
void ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update);
void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data,
const CXXRecordDecl *D);
void MergeDefinitionData(CXXRecordDecl *D,
struct CXXRecordDecl::DefinitionData &&NewDD);
void ReadObjCDefinitionData(struct ObjCInterfaceDecl::DefinitionData &Data);
void MergeDefinitionData(ObjCInterfaceDecl *D,
struct ObjCInterfaceDecl::DefinitionData &&NewDD);
void ReadObjCDefinitionData(struct ObjCProtocolDecl::DefinitionData &Data);
void MergeDefinitionData(ObjCProtocolDecl *D,
struct ObjCProtocolDecl::DefinitionData &&NewDD);
static NamedDecl *getAnonymousDeclForMerging(ASTReader &Reader,
DeclContext *DC,
unsigned Index);
static void setAnonymousDeclForMerging(ASTReader &Reader, DeclContext *DC,
unsigned Index, NamedDecl *D);
/// Results from loading a RedeclarableDecl.
class RedeclarableResult {
Decl *MergeWith;
GlobalDeclID FirstID;
bool IsKeyDecl;
public:
RedeclarableResult(Decl *MergeWith, GlobalDeclID FirstID, bool IsKeyDecl)
: MergeWith(MergeWith), FirstID(FirstID), IsKeyDecl(IsKeyDecl) {}
/// \brief Retrieve the first ID.
GlobalDeclID getFirstID() const { return FirstID; }
/// \brief Is this declaration a key declaration?
bool isKeyDecl() const { return IsKeyDecl; }
/// \brief Get a known declaration that this should be merged with, if
/// any.
Decl *getKnownMergeTarget() const { return MergeWith; }
};
/// \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;
bool AddResult;
unsigned AnonymousDeclNumber;
IdentifierInfo *TypedefNameForLinkage;
void operator=(FindExistingResult &&) = delete;
public:
FindExistingResult(ASTReader &Reader)
: Reader(Reader), New(nullptr), Existing(nullptr), AddResult(false),
AnonymousDeclNumber(0), TypedefNameForLinkage(nullptr) {}
FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,
unsigned AnonymousDeclNumber,
IdentifierInfo *TypedefNameForLinkage)
: Reader(Reader), New(New), Existing(Existing), AddResult(true),
AnonymousDeclNumber(AnonymousDeclNumber),
TypedefNameForLinkage(TypedefNameForLinkage) {}
FindExistingResult(FindExistingResult &&Other)
: Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
AddResult(Other.AddResult),
AnonymousDeclNumber(Other.AnonymousDeclNumber),
TypedefNameForLinkage(Other.TypedefNameForLinkage) {
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); }
};
static DeclContext *getPrimaryContextForMerging(ASTReader &Reader,
DeclContext *DC);
FindExistingResult findExisting(NamedDecl *D);
public:
ASTDeclReader(ASTReader &Reader, ASTRecordReader &Record,
ASTReader::RecordLocation Loc,
DeclID thisDeclID, SourceLocation ThisDeclLoc)
: Reader(Reader), Record(Record), Loc(Loc),
ThisDeclID(thisDeclID), ThisDeclLoc(ThisDeclLoc),
TypeIDForTypeDecl(0), NamedDeclForTagDecl(0),
TypedefNameForLinkage(nullptr), HasPendingBody(false),
IsDeclMarkedUsed(false) {}
template <typename T> static
void AddLazySpecializations(T *D,
SmallVectorImpl<serialization::DeclID>& IDs) {
if (IDs.empty())
return;
// FIXME: We should avoid this pattern of getting the ASTContext.
ASTContext &C = D->getASTContext();
auto *&LazySpecializations = D->getCommonPtr()->LazySpecializations;
if (auto &Old = LazySpecializations) {
IDs.insert(IDs.end(), Old + 1, Old + 1 + Old[0]);
std::sort(IDs.begin(), IDs.end());
IDs.erase(std::unique(IDs.begin(), IDs.end()), IDs.end());
}
auto *Result = new (C) serialization::DeclID[1 + IDs.size()];
*Result = IDs.size();
std::copy(IDs.begin(), IDs.end(), Result + 1);
LazySpecializations = Result;
}
template <typename DeclT>
static Decl *getMostRecentDeclImpl(Redeclarable<DeclT> *D);
static Decl *getMostRecentDeclImpl(...);
static Decl *getMostRecentDecl(Decl *D);
template <typename DeclT>
static void attachPreviousDeclImpl(ASTReader &Reader,
Redeclarable<DeclT> *D, Decl *Previous,
Decl *Canon);
static void attachPreviousDeclImpl(ASTReader &Reader, ...);
static void attachPreviousDecl(ASTReader &Reader, Decl *D, Decl *Previous,
Decl *Canon);
template <typename DeclT>
static void attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest);
static void attachLatestDeclImpl(...);
static void attachLatestDecl(Decl *D, Decl *latest);
template <typename DeclT>
static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
static void markIncompleteDeclChainImpl(...);
/// \brief Determine whether this declaration has a pending body.
bool hasPendingBody() const { return HasPendingBody; }
void ReadFunctionDefinition(FunctionDecl *FD);
void Visit(Decl *D);
void UpdateDecl(Decl *D, llvm::SmallVectorImpl<serialization::DeclID>&);
static void setNextObjCCategory(ObjCCategoryDecl *Cat,
ObjCCategoryDecl *Next) {
Cat->NextClassCategory = Next;
}
void VisitDecl(Decl *D);
void VisitPragmaCommentDecl(PragmaCommentDecl *D);
void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *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);
RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD);
void VisitTypedefDecl(TypedefDecl *TD);
void VisitTypeAliasDecl(TypeAliasDecl *TD);
void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
RedeclarableResult VisitTagDecl(TagDecl *TD);
void VisitEnumDecl(EnumDecl *ED);
RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD);
void VisitRecordDecl(RecordDecl *RD) { VisitRecordDeclImpl(RD); }
RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D);
void VisitCXXRecordDecl(CXXRecordDecl *D) { VisitCXXRecordDeclImpl(D); }
RedeclarableResult VisitClassTemplateSpecializationDeclImpl(
ClassTemplateSpecializationDecl *D);
void VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D) {
VisitClassTemplateSpecializationDeclImpl(D);
}
void VisitClassTemplatePartialSpecializationDecl(
ClassTemplatePartialSpecializationDecl *D);
void VisitClassScopeFunctionSpecializationDecl(
ClassScopeFunctionSpecializationDecl *D);
RedeclarableResult
VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D);
void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D) {
VisitVarTemplateSpecializationDeclImpl(D);
}
void VisitVarTemplatePartialSpecializationDecl(
VarTemplatePartialSpecializationDecl *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 VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD);
void VisitCXXMethodDecl(CXXMethodDecl *D);
void VisitCXXConstructorDecl(CXXConstructorDecl *D);
void VisitCXXDestructorDecl(CXXDestructorDecl *D);
void VisitCXXConversionDecl(CXXConversionDecl *D);
void VisitFieldDecl(FieldDecl *FD);
void VisitMSPropertyDecl(MSPropertyDecl *FD);
void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
RedeclarableResult VisitVarDeclImpl(VarDecl *D);
void VisitVarDecl(VarDecl *VD) { VisitVarDeclImpl(VD); }
void VisitImplicitParamDecl(ImplicitParamDecl *PD);
void VisitParmVarDecl(ParmVarDecl *PD);
void VisitDecompositionDecl(DecompositionDecl *DD);
void VisitBindingDecl(BindingDecl *BD);
void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
DeclID VisitTemplateDecl(TemplateDecl *D);
RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
void VisitClassTemplateDecl(ClassTemplateDecl *D);
void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
void VisitVarTemplateDecl(VarTemplateDecl *D);
void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
void VisitUsingDecl(UsingDecl *D);
void VisitUsingPackDecl(UsingPackDecl *D);
void VisitUsingShadowDecl(UsingShadowDecl *D);
void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
void VisitLinkageSpecDecl(LinkageSpecDecl *D);
void VisitExportDecl(ExportDecl *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);
void VisitCapturedDecl(CapturedDecl *CD);
void VisitEmptyDecl(EmptyDecl *D);
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,
DeclID TemplatePatternID = 0);
template<typename T>
void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
RedeclarableResult &Redecl,
DeclID TemplatePatternID = 0);
template<typename T>
void mergeMergeable(Mergeable<T> *D);
void mergeTemplatePattern(RedeclarableTemplateDecl *D,
RedeclarableTemplateDecl *Existing,
DeclID DsID, bool IsKeyDecl);
ObjCTypeParamList *ReadObjCTypeParamList();
// FIXME: Reorder according to DeclNodes.td?
void VisitObjCMethodDecl(ObjCMethodDecl *D);
void VisitObjCTypeParamDecl(ObjCTypeParamDecl *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);
void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
};
} // end namespace clang
namespace {
/// Iterator over the redeclarations of a declaration that have already
/// been merged into the same redeclaration chain.
template<typename DeclT>
class MergedRedeclIterator {
DeclT *Start, *Canonical, *Current;
public:
MergedRedeclIterator() : Current(nullptr) {}
MergedRedeclIterator(DeclT *Start)
: Start(Start), Canonical(nullptr), Current(Start) {}
DeclT *operator*() { return Current; }
MergedRedeclIterator &operator++() {
if (Current->isFirstDecl()) {
Canonical = Current;
Current = Current->getMostRecentDecl();
} else
Current = Current->getPreviousDecl();
// If we started in the merged portion, we'll reach our start position
// eventually. Otherwise, we'll never reach it, but the second declaration
// we reached was the canonical declaration, so stop when we see that one
// again.
if (Current == Start || Current == Canonical)
Current = nullptr;
return *this;
}
friend bool operator!=(const MergedRedeclIterator &A,
const MergedRedeclIterator &B) {
return A.Current != B.Current;
}
};
} // end anonymous namespace
template <typename DeclT>
static llvm::iterator_range<MergedRedeclIterator<DeclT>>
merged_redecls(DeclT *D) {
return llvm::make_range(MergedRedeclIterator<DeclT>(D),
MergedRedeclIterator<DeclT>());
}
uint64_t ASTDeclReader::GetCurrentCursorOffset() {
return Loc.F->DeclsCursor.GetCurrentBitNo() + Loc.F->GlobalBitOffset;
}
void ASTDeclReader::ReadFunctionDefinition(FunctionDecl *FD) {
if (Record.readInt())
Reader.BodySource[FD] = Loc.F->Kind == ModuleKind::MK_MainFile;
if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
CD->NumCtorInitializers = Record.readInt();
if (CD->NumCtorInitializers)
CD->CtorInitializers = ReadGlobalOffset();
}
// Store the offset of the body so we can lazily load it later.
Reader.PendingBodies[FD] = GetCurrentCursorOffset();
HasPendingBody = true;
}
void ASTDeclReader::Visit(Decl *D) {
DeclVisitor<ASTDeclReader, void>::Visit(D);
// At this point we have deserialized and merged the decl and it is safe to
// update its canonical decl to signal that the entire entity is used.
D->getCanonicalDecl()->Used |= IsDeclMarkedUsed;
IsDeclMarkedUsed = false;
if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
if (DD->DeclInfo) {
DeclaratorDecl::ExtInfo *Info =
DD->DeclInfo.get<DeclaratorDecl::ExtInfo *>();
Info->TInfo = GetTypeSourceInfo();
}
else {
DD->DeclInfo = GetTypeSourceInfo();
}
}
if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) {
// We have a fully initialized TypeDecl. Read its type now.
TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull());
// If this is a tag declaration with a typedef name for linkage, it's safe
// to load that typedef now.
if (NamedDeclForTagDecl)
cast<TagDecl>(D)->TypedefNameDeclOrQualifier =
cast<TypedefNameDecl>(Reader.GetDecl(NamedDeclForTagDecl));
} 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.
// We only read it if FD doesn't already have a body (e.g., from another
// module).
// FIXME: Can we diagnose ODR violations somehow?
if (Record.readInt())
ReadFunctionDefinition(FD);
}
}
void ASTDeclReader::VisitDecl(Decl *D) {
if (D->isTemplateParameter() || D->isTemplateParameterPack() ||
isa<ParmVarDecl>(D)) {
// We don't want to deserialize the DeclContext of a template
// parameter or of a parameter of a function template immediately. These
// entities might be used in the formulation of its DeclContext (for
// example, a function parameter can be used in decltype() in trailing
// return type of the function). Use the translation unit DeclContext as a
// placeholder.
GlobalDeclID SemaDCIDForTemplateParmDecl = ReadDeclID();
GlobalDeclID LexicalDCIDForTemplateParmDecl = ReadDeclID();
if (!LexicalDCIDForTemplateParmDecl)
LexicalDCIDForTemplateParmDecl = SemaDCIDForTemplateParmDecl;
Reader.addPendingDeclContextInfo(D,
SemaDCIDForTemplateParmDecl,
LexicalDCIDForTemplateParmDecl);
D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
} else {
DeclContext *SemaDC = ReadDeclAs<DeclContext>();
DeclContext *LexicalDC = ReadDeclAs<DeclContext>();
if (!LexicalDC)
LexicalDC = SemaDC;
DeclContext *MergedSemaDC = Reader.MergedDeclContexts.lookup(SemaDC);
// Avoid calling setLexicalDeclContext() directly because it uses
// Decl::getASTContext() internally which is unsafe during derialization.
D->setDeclContextsImpl(MergedSemaDC ? MergedSemaDC : SemaDC, LexicalDC,
Reader.getContext());
}
D->setLocation(ThisDeclLoc);
D->setInvalidDecl(Record.readInt());
if (Record.readInt()) { // hasAttrs
AttrVec Attrs;
Record.readAttributes(Attrs);
// Avoid calling setAttrs() directly because it uses Decl::getASTContext()
// internally which is unsafe during derialization.
D->setAttrsImpl(Attrs, Reader.getContext());
}
D->setImplicit(Record.readInt());
D->Used = Record.readInt();
IsDeclMarkedUsed |= D->Used;
D->setReferenced(Record.readInt());
D->setTopLevelDeclInObjCContainer(Record.readInt());
D->setAccess((AccessSpecifier)Record.readInt());
D->FromASTFile = true;
bool ModulePrivate = Record.readInt();
// Determine whether this declaration is part of a (sub)module. If so, it
// may not yet be visible.
if (unsigned SubmoduleID = readSubmoduleID()) {
// Store the owning submodule ID in the declaration.
D->setModuleOwnershipKind(
ModulePrivate ? Decl::ModuleOwnershipKind::ModulePrivate
: Decl::ModuleOwnershipKind::VisibleWhenImported);
D->setOwningModuleID(SubmoduleID);
if (ModulePrivate) {
// Module-private declarations are never visible, so there is no work to
// do.
} else if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
// If local visibility is being tracked, this declaration will become
// hidden and visible as the owning module does.
} else if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
// Mark the declaration as visible when its owning module becomes visible.
if (Owner->NameVisibility == Module::AllVisible)
D->setVisibleDespiteOwningModule();
else
Reader.HiddenNamesMap[Owner].push_back(D);
}
} else if (ModulePrivate) {
D->setModuleOwnershipKind(Decl::ModuleOwnershipKind::ModulePrivate);
}
}
void ASTDeclReader::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
VisitDecl(D);
D->setLocation(ReadSourceLocation());
D->CommentKind = (PragmaMSCommentKind)Record.readInt();
std::string Arg = ReadString();
memcpy(D->getTrailingObjects<char>(), Arg.data(), Arg.size());
D->getTrailingObjects<char>()[Arg.size()] = '\0';
}
void ASTDeclReader::VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D) {
VisitDecl(D);
D->setLocation(ReadSourceLocation());
std::string Name = ReadString();
memcpy(D->getTrailingObjects<char>(), Name.data(), Name.size());
D->getTrailingObjects<char>()[Name.size()] = '\0';
D->ValueStart = Name.size() + 1;
std::string Value = ReadString();
memcpy(D->getTrailingObjects<char>() + D->ValueStart, Value.data(),
Value.size());
D->getTrailingObjects<char>()[D->ValueStart + Value.size()] = '\0';
}
void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
llvm_unreachable("Translation units are not serialized");
}
void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) {
VisitDecl(ND);
ND->setDeclName(Record.readDeclarationName());
AnonymousDeclNumber = Record.readInt();
}
void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) {
VisitNamedDecl(TD);
TD->setLocStart(ReadSourceLocation());
// Delay type reading until after we have fully initialized the decl.
TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
}
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitTypedefNameDecl(TypedefNameDecl *TD) {
RedeclarableResult Redecl = VisitRedeclarable(TD);
VisitTypeDecl(TD);
TypeSourceInfo *TInfo = GetTypeSourceInfo();
if (Record.readInt()) { // isModed
QualType modedT = Record.readType();
TD->setModedTypeSourceInfo(TInfo, modedT);
} else
TD->setTypeSourceInfo(TInfo);
// Read and discard the declaration for which this is a typedef name for
// linkage, if it exists. We cannot rely on our type to pull in this decl,
// because it might have been merged with a type from another module and
// thus might not refer to our version of the declaration.
ReadDecl();
return Redecl;
}
void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
mergeRedeclarable(TD, Redecl);
}
void ASTDeclReader::VisitTypeAliasDecl(TypeAliasDecl *TD) {
RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
if (auto *Template = ReadDeclAs<TypeAliasTemplateDecl>())
// Merged when we merge the template.
TD->setDescribedAliasTemplate(Template);
else
mergeRedeclarable(TD, Redecl);
}
ASTDeclReader::RedeclarableResult ASTDeclReader::VisitTagDecl(TagDecl *TD) {
RedeclarableResult Redecl = VisitRedeclarable(TD);
VisitTypeDecl(TD);
TD->IdentifierNamespace = Record.readInt();
TD->setTagKind((TagDecl::TagKind)Record.readInt());
if (!isa<CXXRecordDecl>(TD))
TD->setCompleteDefinition(Record.readInt());
TD->setEmbeddedInDeclarator(Record.readInt());
TD->setFreeStanding(Record.readInt());
TD->setCompleteDefinitionRequired(Record.readInt());
TD->setBraceRange(ReadSourceRange());
switch (Record.readInt()) {
case 0:
break;
case 1: { // ExtInfo
TagDecl::ExtInfo *Info = new (Reader.getContext()) TagDecl::ExtInfo();
ReadQualifierInfo(*Info);
TD->TypedefNameDeclOrQualifier = Info;
break;
}
case 2: // TypedefNameForAnonDecl
NamedDeclForTagDecl = ReadDeclID();
TypedefNameForLinkage = Record.getIdentifierInfo();
break;
default:
llvm_unreachable("unexpected tag info kind");
}
if (!isa<CXXRecordDecl>(TD))
mergeRedeclarable(TD, Redecl);
return Redecl;
}
void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
VisitTagDecl(ED);
if (TypeSourceInfo *TI = GetTypeSourceInfo())
ED->setIntegerTypeSourceInfo(TI);
else
ED->setIntegerType(Record.readType());
ED->setPromotionType(Record.readType());
ED->setNumPositiveBits(Record.readInt());
ED->setNumNegativeBits(Record.readInt());
ED->IsScoped = Record.readInt();
ED->IsScopedUsingClassTag = Record.readInt();
ED->IsFixed = Record.readInt();
// If this is a definition subject to the ODR, and we already have a
// definition, merge this one into it.
if (ED->IsCompleteDefinition &&
Reader.getContext().getLangOpts().Modules &&
Reader.getContext().getLangOpts().CPlusPlus) {
EnumDecl *&OldDef = Reader.EnumDefinitions[ED->getCanonicalDecl()];
if (!OldDef) {
// This is the first time we've seen an imported definition. Look for a
// local definition before deciding that we are the first definition.
for (auto *D : merged_redecls(ED->getCanonicalDecl())) {
if (!D->isFromASTFile() && D->isCompleteDefinition()) {
OldDef = D;
break;
}
}
}
if (OldDef) {
Reader.MergedDeclContexts.insert(std::make_pair(ED, OldDef));
ED->IsCompleteDefinition = false;
Reader.mergeDefinitionVisibility(OldDef, ED);
} else {
OldDef = ED;
}
}
if (EnumDecl *InstED = ReadDeclAs<EnumDecl>()) {
TemplateSpecializationKind TSK =
(TemplateSpecializationKind)Record.readInt();
SourceLocation POI = ReadSourceLocation();
ED->setInstantiationOfMemberEnum(Reader.getContext(), InstED, TSK);
ED->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
}
}
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitRecordDeclImpl(RecordDecl *RD) {
RedeclarableResult Redecl = VisitTagDecl(RD);
RD->setHasFlexibleArrayMember(Record.readInt());
RD->setAnonymousStructOrUnion(Record.readInt());
RD->setHasObjectMember(Record.readInt());
RD->setHasVolatileMember(Record.readInt());
return Redecl;
}
void ASTDeclReader::VisitValueDecl(ValueDecl *VD) {
VisitNamedDecl(VD);
VD->setType(Record.readType());
}
void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
VisitValueDecl(ECD);
if (Record.readInt())
ECD->setInitExpr(Record.readExpr());
ECD->setInitVal(Record.readAPSInt());
mergeMergeable(ECD);
}
void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
VisitValueDecl(DD);
DD->setInnerLocStart(ReadSourceLocation());
if (Record.readInt()) { // hasExtInfo
DeclaratorDecl::ExtInfo *Info
= new (Reader.getContext()) DeclaratorDecl::ExtInfo();
ReadQualifierInfo(*Info);
DD->DeclInfo = Info;
}
}
void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
RedeclarableResult Redecl = VisitRedeclarable(FD);
VisitDeclaratorDecl(FD);
ReadDeclarationNameLoc(FD->DNLoc, FD->getDeclName());
FD->IdentifierNamespace = Record.readInt();
// FunctionDecl's body is handled last at ASTDeclReader::Visit,
// after everything else is read.
FD->SClass = (StorageClass)Record.readInt();
FD->IsInline = Record.readInt();
FD->IsInlineSpecified = Record.readInt();
FD->IsExplicitSpecified = Record.readInt();
FD->IsVirtualAsWritten = Record.readInt();
FD->IsPure = Record.readInt();
FD->HasInheritedPrototype = Record.readInt();
FD->HasWrittenPrototype = Record.readInt();
FD->IsDeleted = Record.readInt();
FD->IsTrivial = Record.readInt();
FD->IsDefaulted = Record.readInt();
FD->IsExplicitlyDefaulted = Record.readInt();
FD->HasImplicitReturnZero = Record.readInt();
FD->IsConstexpr = Record.readInt();
FD->UsesSEHTry = Record.readInt();
FD->HasSkippedBody = Record.readInt();
FD->IsLateTemplateParsed = Record.readInt();
FD->setCachedLinkage(Linkage(Record.readInt()));
FD->EndRangeLoc = ReadSourceLocation();
switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
case FunctionDecl::TK_NonTemplate:
mergeRedeclarable(FD, Redecl);
break;
case FunctionDecl::TK_FunctionTemplate:
// Merged when we merge the template.
FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>());
break;
case FunctionDecl::TK_MemberSpecialization: {
FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>();
TemplateSpecializationKind TSK =
(TemplateSpecializationKind)Record.readInt();
SourceLocation POI = ReadSourceLocation();
FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
mergeRedeclarable(FD, Redecl);
break;
}
case FunctionDecl::TK_FunctionTemplateSpecialization: {
FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>();
TemplateSpecializationKind TSK =
(TemplateSpecializationKind)Record.readInt();
// Template arguments.
SmallVector<TemplateArgument, 8> TemplArgs;
Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
// Template args as written.
SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
SourceLocation LAngleLoc, RAngleLoc;
bool HasTemplateArgumentsAsWritten = Record.readInt();
if (HasTemplateArgumentsAsWritten) {
unsigned NumTemplateArgLocs = Record.readInt();
TemplArgLocs.reserve(NumTemplateArgLocs);
for (unsigned i=0; i != NumTemplateArgLocs; ++i)
TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
LAngleLoc = ReadSourceLocation();
RAngleLoc = ReadSourceLocation();
}
SourceLocation POI = ReadSourceLocation();
ASTContext &C = Reader.getContext();
TemplateArgumentList *TemplArgList
= TemplateArgumentList::CreateCopy(C, TemplArgs);
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
: nullptr,
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>();
// 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, C);
void *InsertPos = nullptr;
FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
FunctionTemplateSpecializationInfo *ExistingInfo =
CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
if (InsertPos)
CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
else {
assert(Reader.getContext().getLangOpts().Modules &&
"already deserialized this template specialization");
mergeRedeclarable(FD, ExistingInfo->Function, Redecl);
}
}
break;
}
case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
// Templates.
UnresolvedSet<8> TemplDecls;
unsigned NumTemplates = Record.readInt();
while (NumTemplates--)
TemplDecls.addDecl(ReadDeclAs<NamedDecl>());
// Templates args.
TemplateArgumentListInfo TemplArgs;
unsigned NumArgs = Record.readInt();
while (NumArgs--)
TemplArgs.addArgument(Record.readTemplateArgumentLoc());
TemplArgs.setLAngleLoc(ReadSourceLocation());
TemplArgs.setRAngleLoc(ReadSourceLocation());
FD->setDependentTemplateSpecialization(Reader.getContext(),
TemplDecls, TemplArgs);
// These are not merged; we don't need to merge redeclarations of dependent
// template friends.
break;
}
}
// Read in the parameters.
unsigned NumParams = Record.readInt();
SmallVector<ParmVarDecl *, 16> Params;
Params.reserve(NumParams);
for (unsigned I = 0; I != NumParams; ++I)
Params.push_back(ReadDeclAs<ParmVarDecl>());
FD->setParams(Reader.getContext(), Params);
}
void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
VisitNamedDecl(MD);
if (Record.readInt()) {
// Load the body on-demand. Most clients won't care, because method
// definitions rarely show up in headers.
Reader.PendingBodies[MD] = GetCurrentCursorOffset();
HasPendingBody = true;
MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>());
MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>());
}
MD->setInstanceMethod(Record.readInt());
MD->setVariadic(Record.readInt());
MD->setPropertyAccessor(Record.readInt());
MD->setDefined(Record.readInt());
MD->IsOverriding = Record.readInt();
MD->HasSkippedBody = Record.readInt();
MD->IsRedeclaration = Record.readInt();
MD->HasRedeclaration = Record.readInt();
if (MD->HasRedeclaration)
Reader.getContext().setObjCMethodRedeclaration(MD,
ReadDeclAs<ObjCMethodDecl>());
MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record.readInt());
MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
MD->SetRelatedResultType(Record.readInt());
MD->setReturnType(Record.readType());
MD->setReturnTypeSourceInfo(GetTypeSourceInfo());
MD->DeclEndLoc = ReadSourceLocation();
unsigned NumParams = Record.readInt();
SmallVector<ParmVarDecl *, 16> Params;
Params.reserve(NumParams);
for (unsigned I = 0; I != NumParams; ++I)
Params.push_back(ReadDeclAs<ParmVarDecl>());
MD->SelLocsKind = Record.readInt();
unsigned NumStoredSelLocs = Record.readInt();
SmallVector<SourceLocation, 16> SelLocs;
SelLocs.reserve(NumStoredSelLocs);
for (unsigned i = 0; i != NumStoredSelLocs; ++i)
SelLocs.push_back(ReadSourceLocation());
MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
}
void ASTDeclReader::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
VisitTypedefNameDecl(D);
D->Variance = Record.readInt();
D->Index = Record.readInt();
D->VarianceLoc = ReadSourceLocation();
D->ColonLoc = ReadSourceLocation();
}
void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
VisitNamedDecl(CD);
CD->setAtStartLoc(ReadSourceLocation());
CD->setAtEndRange(ReadSourceRange());
}
ObjCTypeParamList *ASTDeclReader::ReadObjCTypeParamList() {
unsigned numParams = Record.readInt();
if (numParams == 0)
return nullptr;
SmallVector<ObjCTypeParamDecl *, 4> typeParams;
typeParams.reserve(numParams);
for (unsigned i = 0; i != numParams; ++i) {
auto typeParam = ReadDeclAs<ObjCTypeParamDecl>();
if (!typeParam)
return nullptr;
typeParams.push_back(typeParam);
}
SourceLocation lAngleLoc = ReadSourceLocation();
SourceLocation rAngleLoc = ReadSourceLocation();
return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
typeParams, rAngleLoc);
}
void ASTDeclReader::ReadObjCDefinitionData(
struct ObjCInterfaceDecl::DefinitionData &Data) {
// Read the superclass.
Data.SuperClassTInfo = GetTypeSourceInfo();
Data.EndLoc = ReadSourceLocation();
Data.HasDesignatedInitializers = Record.readInt();
// Read the directly referenced protocols and their SourceLocations.
unsigned NumProtocols = Record.readInt();
SmallVector<ObjCProtocolDecl *, 16> Protocols;
Protocols.reserve(NumProtocols);
for (unsigned I = 0; I != NumProtocols; ++I)
Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtocols);
for (unsigned I = 0; I != NumProtocols; ++I)
ProtoLocs.push_back(ReadSourceLocation());
Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
Reader.getContext());
// Read the transitive closure of protocols referenced by this class.
NumProtocols = Record.readInt();
Protocols.clear();
Protocols.reserve(NumProtocols);
for (unsigned I = 0; I != NumProtocols; ++I)
Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
Reader.getContext());
}
void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
// FIXME: odr checking?
}
void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
RedeclarableResult Redecl = VisitRedeclarable(ID);
VisitObjCContainerDecl(ID);
TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
mergeRedeclarable(ID, Redecl);
ID->TypeParamList = ReadObjCTypeParamList();
if (Record.readInt()) {
// Read the definition.
ID->allocateDefinitionData();
ReadObjCDefinitionData(ID->data());
ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
if (Canon->Data.getPointer()) {
// If we already have a definition, keep the definition invariant and
// merge the data.
MergeDefinitionData(Canon, std::move(ID->data()));
ID->Data = Canon->Data;
} else {
// Set the definition data of the canonical declaration, so other
// redeclarations will see it.
ID->getCanonicalDecl()->Data = ID->Data;
// We will rebuild this list lazily.
ID->setIvarList(nullptr);
}
// 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.readInt());
// This field will be built lazily.
IVD->setNextIvar(nullptr);
bool synth = Record.readInt();
IVD->setSynthesize(synth);
}
void ASTDeclReader::ReadObjCDefinitionData(
struct ObjCProtocolDecl::DefinitionData &Data) {
unsigned NumProtoRefs = Record.readInt();
SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
ProtoRefs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoLocs.push_back(ReadSourceLocation());
Data.ReferencedProtocols.set(ProtoRefs.data(), NumProtoRefs,
ProtoLocs.data(), Reader.getContext());
}
void ASTDeclReader::MergeDefinitionData(ObjCProtocolDecl *D,
struct ObjCProtocolDecl::DefinitionData &&NewDD) {
// FIXME: odr checking?
}
void ASTDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
RedeclarableResult Redecl = VisitRedeclarable(PD);
VisitObjCContainerDecl(PD);
mergeRedeclarable(PD, Redecl);
if (Record.readInt()) {
// Read the definition.
PD->allocateDefinitionData();
ReadObjCDefinitionData(PD->data());
ObjCProtocolDecl *Canon = PD->getCanonicalDecl();
if (Canon->Data.getPointer()) {
// If we already have a definition, keep the definition invariant and
// merge the data.
MergeDefinitionData(Canon, std::move(PD->data()));
PD->Data = Canon->Data;
} else {
// Set the definition data of the canonical declaration, so other
// redeclarations will see it.
PD->getCanonicalDecl()->Data = PD->Data;
}
// 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());
CD->setIvarLBraceLoc(ReadSourceLocation());
CD->setIvarRBraceLoc(ReadSourceLocation());
// 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>();
CD->TypeParamList = ReadObjCTypeParamList();
unsigned NumProtoRefs = Record.readInt();
SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
ProtoRefs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
SmallVector<SourceLocation, 16> ProtoLocs;
ProtoLocs.reserve(NumProtoRefs);
for (unsigned I = 0; I != NumProtoRefs; ++I)
ProtoLocs.push_back(ReadSourceLocation());
CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
Reader.getContext());
}
void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
VisitNamedDecl(CAD);
CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
CAD->setClassInterfaceLoc(ReadSourceLocation());
CAD->setAtLoc(ReadSourceLocation());
}
void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
VisitNamedDecl(D);
D->setAtLoc(ReadSourceLocation());
D->setLParenLoc(ReadSourceLocation());
QualType T = Record.readType();
TypeSourceInfo *TSI = GetTypeSourceInfo();
D->setType(T, TSI);
D->setPropertyAttributes(
(ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
D->setPropertyAttributesAsWritten(
(ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
D->setPropertyImplementation(
(ObjCPropertyDecl::PropertyControl)Record.readInt());
DeclarationName GetterName = Record.readDeclarationName();
SourceLocation GetterLoc = ReadSourceLocation();
D->setGetterName(GetterName.getObjCSelector(), GetterLoc);
DeclarationName SetterName = Record.readDeclarationName();
SourceLocation SetterLoc = ReadSourceLocation();
D->setSetterName(SetterName.getObjCSelector(), SetterLoc);
D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>());
}
void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
VisitObjCContainerDecl(D);
D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
}
void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
VisitObjCImplDecl(D);
D->CategoryNameLoc = ReadSourceLocation();
}
void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
VisitObjCImplDecl(D);
D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>());
D->SuperLoc = ReadSourceLocation();
D->setIvarLBraceLoc(ReadSourceLocation());
D->setIvarRBraceLoc(ReadSourceLocation());
D->setHasNonZeroConstructors(Record.readInt());
D->setHasDestructors(Record.readInt());
D->NumIvarInitializers = Record.readInt();
if (D->NumIvarInitializers)
D->IvarInitializers = ReadGlobalOffset();
}
void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
VisitDecl(D);
D->setAtLoc(ReadSourceLocation());
D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>());
D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>();
D->IvarLoc = ReadSourceLocation();
D->setGetterCXXConstructor(Record.readExpr());
D->setSetterCXXAssignment(Record.readExpr());
}
void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
VisitDeclaratorDecl(FD);
FD->Mutable = Record.readInt();
if (int BitWidthOrInitializer = Record.readInt()) {
FD->InitStorage.setInt(
static_cast<FieldDecl::InitStorageKind>(BitWidthOrInitializer - 1));
if (FD->InitStorage.getInt() == FieldDecl::ISK_CapturedVLAType) {
// Read captured variable length array.
FD->InitStorage.setPointer(Record.readType().getAsOpaquePtr());
} else {
FD->InitStorage.setPointer(Record.readExpr());
}
}
if (!FD->getDeclName()) {
if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>())
Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
}
mergeMergeable(FD);
}
void ASTDeclReader::VisitMSPropertyDecl(MSPropertyDecl *PD) {
VisitDeclaratorDecl(PD);
PD->GetterId = Record.getIdentifierInfo();
PD->SetterId = Record.getIdentifierInfo();
}
void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
VisitValueDecl(FD);
FD->ChainingSize = Record.readInt();
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>();
mergeMergeable(FD);
}
ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
RedeclarableResult Redecl = VisitRedeclarable(VD);
VisitDeclaratorDecl(VD);
VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
VD->VarDeclBits.TSCSpec = Record.readInt();
VD->VarDeclBits.InitStyle = Record.readInt();
if (!isa<ParmVarDecl>(VD)) {
VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
Record.readInt();
VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
VD->NonParmVarDeclBits.ARCPseudoStrong = Record.readInt();
VD->NonParmVarDeclBits.IsInline = Record.readInt();
VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
VD->NonParmVarDeclBits.ImplicitParamKind = Record.readInt();
}
Linkage VarLinkage = Linkage(Record.readInt());
VD->setCachedLinkage(VarLinkage);
// Reconstruct the one piece of the IdentifierNamespace that we need.
if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
VD->getLexicalDeclContext()->isFunctionOrMethod())
VD->setLocalExternDecl();
if (uint64_t Val = Record.readInt()) {
VD->setInit(Record.readExpr());
if (Val > 1) { // IsInitKnownICE = 1, IsInitNotICE = 2, IsInitICE = 3
EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
Eval->CheckedICE = true;
Eval->IsICE = Val == 3;
}
}
enum VarKind {
VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
};
switch ((VarKind)Record.readInt()) {
case VarNotTemplate:
// Only true variables (not parameters or implicit parameters) can be
// merged; the other kinds are not really redeclarable at all.
if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
!isa<VarTemplateSpecializationDecl>(VD))
mergeRedeclarable(VD, Redecl);
break;
case VarTemplate:
// Merged when we merge the template.
VD->setDescribedVarTemplate(ReadDeclAs<VarTemplateDecl>());
break;
case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
VarDecl *Tmpl = ReadDeclAs<VarDecl>();
TemplateSpecializationKind TSK =
(TemplateSpecializationKind)Record.readInt();
SourceLocation POI = ReadSourceLocation();
Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
mergeRedeclarable(VD, Redecl);
break;
}
}
return Redecl;
}
void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
VisitVarDecl(PD);
}
void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
VisitVarDecl(PD);
unsigned isObjCMethodParam = Record.readInt();
unsigned scopeDepth = Record.readInt();
unsigned scopeIndex = Record.readInt();
unsigned declQualifier = Record.readInt();
if (isObjCMethodParam) {
assert(scopeDepth == 0);
PD->setObjCMethodScopeInfo(scopeIndex);
PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
} else {
PD->setScopeInfo(scopeDepth, scopeIndex);
}
PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
if (Record.readInt()) // hasUninstantiatedDefaultArg.
PD->setUninstantiatedDefaultArg(Record.readExpr());
// FIXME: If this is a redeclaration of a function from another module, handle
// inheritance of default arguments.
}
void ASTDeclReader::VisitDecompositionDecl(DecompositionDecl *DD) {
VisitVarDecl(DD);
BindingDecl **BDs = DD->getTrailingObjects<BindingDecl*>();
for (unsigned I = 0; I != DD->NumBindings; ++I)
BDs[I] = ReadDeclAs<BindingDecl>();
}
void ASTDeclReader::VisitBindingDecl(BindingDecl *BD) {
VisitValueDecl(BD);
BD->Binding = Record.readExpr();
}
void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
VisitDecl(AD);
AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
AD->setRParenLoc(ReadSourceLocation());
}
void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) {
VisitDecl(BD);
BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
BD->setSignatureAsWritten(GetTypeSourceInfo());
unsigned NumParams = Record.readInt();
SmallVector<ParmVarDecl *, 16> Params;
Params.reserve(NumParams);
for (unsigned I = 0; I != NumParams; ++I)
Params.push_back(ReadDeclAs<ParmVarDecl>());
BD->setParams(Params);
BD->setIsVariadic(Record.readInt());
BD->setBlockMissingReturnType(Record.readInt());
BD->setIsConversionFromLambda(Record.readInt());
bool capturesCXXThis = Record.readInt();
unsigned numCaptures = Record.readInt();
SmallVector<BlockDecl::Capture, 16> captures;
captures.reserve(numCaptures);
for (unsigned i = 0; i != numCaptures; ++i) {
VarDecl *decl = ReadDeclAs<VarDecl>();
unsigned flags = Record.readInt();
bool byRef = (flags & 1);
bool nested = (flags & 2);
Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
}
BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
}
void ASTDeclReader::VisitCapturedDecl(CapturedDecl *CD) {
VisitDecl(CD);
unsigned ContextParamPos = Record.readInt();
CD->setNothrow(Record.readInt() != 0);
// Body is set by VisitCapturedStmt.
for (unsigned I = 0; I < CD->NumParams; ++I) {
if (I != ContextParamPos)
CD->setParam(I, ReadDeclAs<ImplicitParamDecl>());
else
CD->setContextParam(I, ReadDeclAs<ImplicitParamDecl>());
}
}
void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
VisitDecl(D);
D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
D->setExternLoc(ReadSourceLocation());
D->setRBraceLoc(ReadSourceLocation());
}
void ASTDeclReader::VisitExportDecl(ExportDecl *D) {
VisitDecl(D);
D->RBraceLoc = ReadSourceLocation();
}
void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
VisitNamedDecl(D);
D->setLocStart(ReadSourceLocation());
}
void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
RedeclarableResult Redecl = VisitRedeclarable(D);
VisitNamedDecl(D);
D->setInline(Record.readInt());
D->LocStart = ReadSourceLocation();
D->RBraceLoc = ReadSourceLocation();
// Defer loading the anonymous namespace until we've finished merging
// this namespace; loading it might load a later declaration of the
// same namespace, and we have an invariant that older declarations
// get merged before newer ones try to merge.
GlobalDeclID AnonNamespace = 0;
if (Redecl.getFirstID() == ThisDeclID) {
AnonNamespace = ReadDeclID();
} else {
// Link this namespace back to the first declaration, which has already
// been deserialized.
D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
}
mergeRedeclarable(D, Redecl);
if (AnonNamespace) {
// 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 = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
if (!Record.isModule())
D->setAnonymousNamespace(Anon);
}
}
void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
RedeclarableResult Redecl = VisitRedeclarable(D);
VisitNamedDecl(D);
D->NamespaceLoc = ReadSourceLocation();
D->IdentLoc = ReadSourceLocation();
D->QualifierLoc = Record.readNestedNameSpecifierLoc();
D->Namespace = ReadDeclAs<NamedDecl>();
mergeRedeclarable(D, Redecl);
}
void ASTDeclReader::VisitUsingDecl(UsingDecl *D) {
VisitNamedDecl(D);
D->setUsingLoc(ReadSourceLocation());
D->QualifierLoc = Record.readNestedNameSpecifierLoc();
ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
D->FirstUsingShadow.setPointer(ReadDeclAs<UsingShadowDecl>());
D->setTypename(Record.readInt());
if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>())
Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
mergeMergeable(D);
}
void ASTDeclReader::VisitUsingPackDecl(UsingPackDecl *D) {
VisitNamedDecl(D);
D->InstantiatedFrom = ReadDeclAs<NamedDecl>();
NamedDecl **Expansions = D->getTrailingObjects<NamedDecl*>();
for (unsigned I = 0; I != D->NumExpansions; ++I)
Expansions[I] = ReadDeclAs<NamedDecl>();
mergeMergeable(D);
}
void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
RedeclarableResult Redecl = VisitRedeclarable(D);
VisitNamedDecl(D);
D->setTargetDecl(ReadDeclAs<NamedDecl>());
D->UsingOrNextShadow = ReadDeclAs<NamedDecl>();
UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>();
if (Pattern)
Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
mergeRedeclarable(D, Redecl);
}
void ASTDeclReader::VisitConstructorUsingShadowDecl(
ConstructorUsingShadowDecl *D) {
VisitUsingShadowDecl(D);
D->NominatedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
D->ConstructedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
D->IsVirtual = Record.readInt();
}
void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
VisitNamedDecl(D);
D->UsingLoc = ReadSourceLocation();
D->NamespaceLoc = ReadSourceLocation();
D->QualifierLoc = Record.readNestedNameSpecifierLoc();
D->NominatedNamespace = ReadDeclAs<NamedDecl>();
D->CommonAncestor = ReadDeclAs<DeclContext>();
}
void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
VisitValueDecl(D);
D->setUsingLoc(ReadSourceLocation());
D->QualifierLoc = Record.readNestedNameSpecifierLoc();
ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
D->EllipsisLoc = ReadSourceLocation();
mergeMergeable(D);
}
void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
UnresolvedUsingTypenameDecl *D) {
VisitTypeDecl(D);
D->TypenameLocation = ReadSourceLocation();
D->QualifierLoc = Record.readNestedNameSpecifierLoc();
D->EllipsisLoc = ReadSourceLocation();
mergeMergeable(D);
}
void ASTDeclReader::ReadCXXDefinitionData(
struct CXXRecordDecl::DefinitionData &Data, const CXXRecordDecl *D) {
// Note: the caller has deserialized the IsLambda bit already.
Data.UserDeclaredConstructor = Record.readInt();
Data.UserDeclaredSpecialMembers = Record.readInt();
Data.Aggregate = Record.readInt();
Data.PlainOldData = Record.readInt();
Data.Empty = Record.readInt();
Data.Polymorphic = Record.readInt();
Data.Abstract = Record.readInt();
Data.IsStandardLayout = Record.readInt();
Data.HasNoNonEmptyBases = Record.readInt();
Data.HasPrivateFields = Record.readInt();
Data.HasProtectedFields = Record.readInt();
Data.HasPublicFields = Record.readInt();
Data.HasMutableFields = Record.readInt();
Data.HasVariantMembers = Record.readInt();
Data.HasOnlyCMembers = Record.readInt();
Data.HasInClassInitializer = Record.readInt();
Data.HasUninitializedReferenceMember = Record.readInt();
Data.HasUninitializedFields = Record.readInt();
Data.HasInheritedConstructor = Record.readInt();
Data.HasInheritedAssignment = Record.readInt();
Data.NeedOverloadResolutionForMoveConstructor = Record.readInt();
Data.NeedOverloadResolutionForMoveAssignment = Record.readInt();
Data.NeedOverloadResolutionForDestructor = Record.readInt();
Data.DefaultedMoveConstructorIsDeleted = Record.readInt();
Data.DefaultedMoveAssignmentIsDeleted = Record.readInt();
Data.DefaultedDestructorIsDeleted = Record.readInt();
Data.HasTrivialSpecialMembers = Record.readInt();
Data.DeclaredNonTrivialSpecialMembers = Record.readInt();
Data.HasIrrelevantDestructor = Record.readInt();
Data.HasConstexprNonCopyMoveConstructor = Record.readInt();
Data.HasDefaultedDefaultConstructor = Record.readInt();
Data.DefaultedDefaultConstructorIsConstexpr = Record.readInt();
Data.HasConstexprDefaultConstructor = Record.readInt();
Data.HasNonLiteralTypeFieldsOrBases = Record.readInt();
Data.ComputedVisibleConversions = Record.readInt();
Data.UserProvidedDefaultConstructor = Record.readInt();
Data.DeclaredSpecialMembers = Record.readInt();
Data.ImplicitCopyConstructorCanHaveConstParamForVBase = Record.readInt();
Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase = Record.readInt();
Data.ImplicitCopyAssignmentHasConstParam = Record.readInt();
Data.HasDeclaredCopyConstructorWithConstParam = Record.readInt();
Data.HasDeclaredCopyAssignmentWithConstParam = Record.readInt();
Data.ODRHash = Record.readInt();
Data.HasODRHash = true;
if (Record.readInt()) {
Reader.BodySource[D] = Loc.F->Kind == ModuleKind::MK_MainFile
? ExternalASTSource::EK_Never
: ExternalASTSource::EK_Always;
}
Data.NumBases = Record.readInt();
if (Data.NumBases)
Data.Bases = ReadGlobalOffset();
Data.NumVBases = Record.readInt();
if (Data.NumVBases)
Data.VBases = ReadGlobalOffset();
Record.readUnresolvedSet(Data.Conversions);
Record.readUnresolvedSet(Data.VisibleConversions);
assert(Data.Definition && "Data.Definition should be already set!");
Data.FirstFriend = ReadDeclID();
if (Data.IsLambda) {
typedef LambdaCapture Capture;
CXXRecordDecl::LambdaDefinitionData &Lambda
= static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
Lambda.Dependent = Record.readInt();
Lambda.IsGenericLambda = Record.readInt();
Lambda.CaptureDefault = Record.readInt();
Lambda.NumCaptures = Record.readInt();
Lambda.NumExplicitCaptures = Record.readInt();
Lambda.ManglingNumber = Record.readInt();
Lambda.ContextDecl = ReadDeclID();
Lambda.Captures = (Capture *)Reader.getContext().Allocate(
sizeof(Capture) * Lambda.NumCaptures);
Capture *ToCapture = Lambda.Captures;
Lambda.MethodTyInfo = GetTypeSourceInfo();
for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
SourceLocation Loc = ReadSourceLocation();
bool IsImplicit = Record.readInt();
LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record.readInt());
switch (Kind) {
case LCK_StarThis:
case LCK_This:
case LCK_VLAType:
*ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
break;
case LCK_ByCopy:
case LCK_ByRef:
VarDecl *Var = ReadDeclAs<VarDecl>();
SourceLocation EllipsisLoc = ReadSourceLocation();
*ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
break;
}
}
}
}
void ASTDeclReader::MergeDefinitionData(
CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
assert(D->DefinitionData &&
"merging class definition into non-definition");
auto &DD = *D->DefinitionData;
if (DD.Definition != MergeDD.Definition) {
// Track that we merged the definitions.
Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
DD.Definition));
Reader.PendingDefinitions.erase(MergeDD.Definition);
MergeDD.Definition->IsCompleteDefinition = false;
Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
assert(Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() &&
"already loaded pending lookups for merged definition");
}
auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
if (PFDI != Reader.PendingFakeDefinitionData.end() &&
PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
// We faked up this definition data because we found a class for which we'd
// not yet loaded the definition. Replace it with the real thing now.
assert(!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?");
PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
// Don't change which declaration is the definition; that is required
// to be invariant once we select it.
auto *Def = DD.Definition;
DD = std::move(MergeDD);
DD.Definition = Def;
return;
}
// FIXME: Move this out into a .def file?
bool DetectedOdrViolation = false;
#define OR_FIELD(Field) DD.Field |= MergeDD.Field;
#define MATCH_FIELD(Field) \
DetectedOdrViolation |= DD.Field != MergeDD.Field; \
OR_FIELD(Field)
MATCH_FIELD(UserDeclaredConstructor)
MATCH_FIELD(UserDeclaredSpecialMembers)
MATCH_FIELD(Aggregate)
MATCH_FIELD(PlainOldData)
MATCH_FIELD(Empty)
MATCH_FIELD(Polymorphic)
MATCH_FIELD(Abstract)
MATCH_FIELD(IsStandardLayout)
MATCH_FIELD(HasNoNonEmptyBases)
MATCH_FIELD(HasPrivateFields)
MATCH_FIELD(HasProtectedFields)
MATCH_FIELD(HasPublicFields)
MATCH_FIELD(HasMutableFields)
MATCH_FIELD(HasVariantMembers)
MATCH_FIELD(HasOnlyCMembers)
MATCH_FIELD(HasInClassInitializer)
MATCH_FIELD(HasUninitializedReferenceMember)
MATCH_FIELD(HasUninitializedFields)
MATCH_FIELD(HasInheritedConstructor)
MATCH_FIELD(HasInheritedAssignment)
MATCH_FIELD(NeedOverloadResolutionForMoveConstructor)
MATCH_FIELD(NeedOverloadResolutionForMoveAssignment)
MATCH_FIELD(NeedOverloadResolutionForDestructor)
MATCH_FIELD(DefaultedMoveConstructorIsDeleted)
MATCH_FIELD(DefaultedMoveAssignmentIsDeleted)
MATCH_FIELD(DefaultedDestructorIsDeleted)
OR_FIELD(HasTrivialSpecialMembers)
OR_FIELD(DeclaredNonTrivialSpecialMembers)
MATCH_FIELD(HasIrrelevantDestructor)
OR_FIELD(HasConstexprNonCopyMoveConstructor)
OR_FIELD(HasDefaultedDefaultConstructor)
MATCH_FIELD(DefaultedDefaultConstructorIsConstexpr)
OR_FIELD(HasConstexprDefaultConstructor)
MATCH_FIELD(HasNonLiteralTypeFieldsOrBases)
// ComputedVisibleConversions is handled below.
MATCH_FIELD(UserProvidedDefaultConstructor)
OR_FIELD(DeclaredSpecialMembers)
MATCH_FIELD(ImplicitCopyConstructorCanHaveConstParamForVBase)
MATCH_FIELD(ImplicitCopyConstructorCanHaveConstParamForNonVBase)
MATCH_FIELD(ImplicitCopyAssignmentHasConstParam)
OR_FIELD(HasDeclaredCopyConstructorWithConstParam)
OR_FIELD(HasDeclaredCopyAssignmentWithConstParam)
MATCH_FIELD(IsLambda)
#undef OR_FIELD
#undef MATCH_FIELD
if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
DetectedOdrViolation = true;
// FIXME: Issue a diagnostic if the base classes don't match when we come
// to lazily load them.
// FIXME: Issue a diagnostic if the list of conversion functions doesn't
// match when we come to lazily load them.
if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
DD.ComputedVisibleConversions = true;
}
// FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
// lazily load it.
if (DD.IsLambda) {
// FIXME: ODR-checking for merging lambdas (this happens, for instance,
// when they occur within the body of a function template specialization).
}
if (D->getODRHash() != MergeDD.ODRHash) {
DetectedOdrViolation = true;
}
if (DetectedOdrViolation)
Reader.PendingOdrMergeFailures[DD.Definition].push_back(MergeDD.Definition);
}
void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
struct CXXRecordDecl::DefinitionData *DD;
ASTContext &C = Reader.getContext();
// Determine whether this is a lambda closure type, so that we can
// allocate the appropriate DefinitionData structure.
bool IsLambda = Record.readInt();
if (IsLambda)
DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
LCD_None);
else
DD = new (C) struct CXXRecordDecl::DefinitionData(D);
ReadCXXDefinitionData(*DD, D);
// We might already have a definition for this record. This can happen either
// because we're reading an update record, or because we've already done some
// merging. Either way, just merge into it.
CXXRecordDecl *Canon = D->getCanonicalDecl();
if (Canon->DefinitionData) {
MergeDefinitionData(Canon, std::move(*DD));
D->DefinitionData = Canon->DefinitionData;
return;
}
// Mark this declaration as being a definition.
D->IsCompleteDefinition = true;
D->DefinitionData = DD;
// If this is not the first declaration or is an update record, we can have
// other redeclarations already. Make a note that we need to propagate the
// DefinitionData pointer onto them.
if (Update || Canon != D) {
Canon->DefinitionData = D->DefinitionData;
Reader.PendingDefinitions.insert(D);
}
}
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitCXXRecordDeclImpl(CXXRecordDecl *D) {
RedeclarableResult Redecl = VisitRecordDeclImpl(D);
ASTContext &C = Reader.getContext();
enum CXXRecKind {
CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
};
switch ((CXXRecKind)Record.readInt()) {
case CXXRecNotTemplate:
// Merged when we merge the folding set entry in the primary template.
if (!isa<ClassTemplateSpecializationDecl>(D))
mergeRedeclarable(D, Redecl);
break;
case CXXRecTemplate: {
// Merged when we merge the template.
ClassTemplateDecl *Template = ReadDeclAs<ClassTemplateDecl>();
D->TemplateOrInstantiation = Template;
if (!Template->getTemplatedDecl()) {
// We've not actually loaded the ClassTemplateDecl yet, because we're
// currently being loaded as its pattern. Rely on it to set up our
// TypeForDecl (see VisitClassTemplateDecl).
//
// Beware: we do not yet know our canonical declaration, and may still
// get merged once the surrounding class template has got off the ground.
TypeIDForTypeDecl = 0;
}
break;
}
case CXXRecMemberSpecialization: {
CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>();
TemplateSpecializationKind TSK =
(TemplateSpecializationKind)Record.readInt();
SourceLocation POI = ReadSourceLocation();
MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
MSI->setPointOfInstantiation(POI);
D->TemplateOrInstantiation = MSI;
mergeRedeclarable(D, Redecl);
break;
}
}
bool WasDefinition = Record.readInt();
if (WasDefinition)
ReadCXXRecordDefinition(D, /*Update*/false);
else
// Propagate DefinitionData pointer from the canonical declaration.
D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
// Lazily load the key function to avoid deserializing every method so we can
// compute it.
if (WasDefinition) {
DeclID KeyFn = ReadDeclID();
if (KeyFn && D->IsCompleteDefinition)
// FIXME: This is wrong for the ARM ABI, where some other module may have
// made this function no longer be a key function. We need an update
// record or similar for that case.
C.KeyFunctions[D] = KeyFn;
}
return Redecl;
}
void ASTDeclReader::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
VisitFunctionDecl(D);
}
void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
VisitFunctionDecl(D);
unsigned NumOverridenMethods = Record.readInt();
if (D->isCanonicalDecl()) {
while (NumOverridenMethods--) {
// Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
// MD may be initializing.
if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>())
Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
}
} else {
// We don't care about which declarations this used to override; we get
// the relevant information from the canonical declaration.
Record.skipInts(NumOverridenMethods);
}
}
void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
// We need the inherited constructor information to merge the declaration,
// so we have to read it before we call VisitCXXMethodDecl.
if (D->isInheritingConstructor()) {
auto *Shadow = ReadDeclAs<ConstructorUsingShadowDecl>();
auto *Ctor = ReadDeclAs<CXXConstructorDecl>();
*D->getTrailingObjects<InheritedConstructor>() =
InheritedConstructor(Shadow, Ctor);
}
VisitCXXMethodDecl(D);
}
void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
VisitCXXMethodDecl(D);
if (auto *OperatorDelete = ReadDeclAs<FunctionDecl>()) {
auto *Canon = cast<CXXDestructorDecl>(D->getCanonicalDecl());
// FIXME: Check consistency if we have an old and new operator delete.
if (!Canon->OperatorDelete)
Canon->OperatorDelete = OperatorDelete;
}
}
void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
VisitCXXMethodDecl(D);
}
void ASTDeclReader::VisitImportDecl(ImportDecl *D) {
VisitDecl(D);
D->ImportedAndComplete.setPointer(readModule());
D->ImportedAndComplete.setInt(Record.readInt());
SourceLocation *StoredLocs = D->getTrailingObjects<SourceLocation>();
for (unsigned I = 0, N = Record.back(); I != N; ++I)
StoredLocs[I] = ReadSourceLocation();
Record.skipInts(1); // The number of stored source locations.
}
void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
VisitDecl(D);
D->setColonLoc(ReadSourceLocation());
}
void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
VisitDecl(D);
if (Record.readInt()) // hasFriendDecl
D->Friend = ReadDeclAs<NamedDecl>();
else
D->Friend = GetTypeSourceInfo();
for (unsigned i = 0; i != D->NumTPLists; ++i)
D->getTrailingObjects<TemplateParameterList *>()[i] =
Record.readTemplateParameterList();
D->NextFriend = ReadDeclID();
D->UnsupportedFriend = (Record.readInt() != 0);
D->FriendLoc = ReadSourceLocation();
}
void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
VisitDecl(D);
unsigned NumParams = Record.readInt();
D->NumParams = NumParams;
D->Params = new TemplateParameterList*[NumParams];
for (unsigned i = 0; i != NumParams; ++i)
D->Params[i] = Record.readTemplateParameterList();
if (Record.readInt()) // HasFriendDecl
D->Friend = ReadDeclAs<NamedDecl>();
else
D->Friend = GetTypeSourceInfo();
D->FriendLoc = ReadSourceLocation();
}
DeclID ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
VisitNamedDecl(D);
DeclID PatternID = ReadDeclID();
NamedDecl *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
// FIXME handle associated constraints
D->init(TemplatedDecl, TemplateParams);
return PatternID;
}
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>()) {
assert(RTD->getKind() == D->getKind() &&
"InstantiatedFromMemberTemplate kind mismatch");
D->setInstantiatedFromMemberTemplate(RTD);
if (Record.readInt())
D->setMemberSpecialization();
}
}
DeclID PatternID = VisitTemplateDecl(D);
D->IdentifierNamespace = Record.readInt();
mergeRedeclarable(D, Redecl, PatternID);
// If we merged the template with a prior declaration chain, merge the common
// pointer.
// FIXME: Actually merge here, don't just overwrite.
D->Common = D->getCanonicalDecl()->Common;
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, 32> SpecIDs;
ReadDeclIDList(SpecIDs);
ASTDeclReader::AddLazySpecializations(D, SpecIDs);
}
if (D->getTemplatedDecl()->TemplateOrInstantiation) {
// We were loaded before our templated declaration was. We've not set up
// its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
// it now.
Reader.getContext().getInjectedClassNameType(
D->getTemplatedDecl(), D->getInjectedClassNameSpecialization());
}
}
void ASTDeclReader::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) {
llvm_unreachable("BuiltinTemplates are not serialized");
}
/// TODO: Unify with ClassTemplateDecl version?
/// May require unifying ClassTemplateDecl and
/// VarTemplateDecl beyond TemplateDecl...
void ASTDeclReader::VisitVarTemplateDecl(VarTemplateDecl *D) {
RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
if (ThisDeclID == Redecl.getFirstID()) {
// This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
// the specializations.
SmallVector<serialization::DeclID, 32> SpecIDs;
ReadDeclIDList(SpecIDs);
ASTDeclReader::AddLazySpecializations(D, SpecIDs);
}
}
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitClassTemplateSpecializationDeclImpl(
ClassTemplateSpecializationDecl *D) {
RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
ASTContext &C = Reader.getContext();
if (Decl *InstD = ReadDecl()) {
if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
D->SpecializedTemplate = CTD;
} else {
SmallVector<TemplateArgument, 8> TemplArgs;
Record.readTemplateArgumentList(TemplArgs);
TemplateArgumentList *ArgList
= TemplateArgumentList::CreateCopy(C, TemplArgs);
ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
= new (C) ClassTemplateSpecializationDecl::
SpecializedPartialSpecialization();
PS->PartialSpecialization
= cast<ClassTemplatePartialSpecializationDecl>(InstD);
PS->TemplateArgs = ArgList;
D->SpecializedTemplate = PS;
}
}
SmallVector<TemplateArgument, 8> TemplArgs;
Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
D->PointOfInstantiation = ReadSourceLocation();
D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
bool writtenAsCanonicalDecl = Record.readInt();
if (writtenAsCanonicalDecl) {
ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>();
if (D->isCanonicalDecl()) { // It's kept in the folding set.
// Set this as, or find, the canonical declaration for this specialization
ClassTemplateSpecializationDecl *CanonSpec;
if (ClassTemplatePartialSpecializationDecl *Partial =
dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
.GetOrInsertNode(Partial);
} else {
CanonSpec =
CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
}
// If there was already a canonical specialization, merge into it.
if (CanonSpec != D) {
mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
// This declaration might be a definition. Merge with any existing
// definition.
if (auto *DDD = D->DefinitionData) {
if (CanonSpec->DefinitionData)
MergeDefinitionData(CanonSpec, std::move(*DDD));
else
CanonSpec->DefinitionData = D->DefinitionData;
}
D->DefinitionData = CanonSpec->DefinitionData;
}
}
}
// Explicit info.
if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
= new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
ExplicitInfo->TypeAsWritten = TyInfo;
ExplicitInfo->ExternLoc = ReadSourceLocation();
ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
D->ExplicitInfo = ExplicitInfo;
}
return Redecl;
}
void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
ClassTemplatePartialSpecializationDecl *D) {
RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
D->TemplateParams = Record.readTemplateParameterList();
D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
// These are read/set from/to the first declaration.
if (ThisDeclID == Redecl.getFirstID()) {
D->InstantiatedFromMember.setPointer(
ReadDeclAs<ClassTemplatePartialSpecializationDecl>());
D->InstantiatedFromMember.setInt(Record.readInt());
}
}
void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
ClassScopeFunctionSpecializationDecl *D) {
VisitDecl(D);
D->Specialization = ReadDeclAs<CXXMethodDecl>();
}
void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
if (ThisDeclID == Redecl.getFirstID()) {
// This FunctionTemplateDecl owns a CommonPtr; read it.
SmallVector<serialization::DeclID, 32> SpecIDs;
ReadDeclIDList(SpecIDs);
ASTDeclReader::AddLazySpecializations(D, SpecIDs);
}
}
/// TODO: Unify with ClassTemplateSpecializationDecl version?
/// May require unifying ClassTemplate(Partial)SpecializationDecl and
/// VarTemplate(Partial)SpecializationDecl with a new data
/// structure Template(Partial)SpecializationDecl, and
/// using Template(Partial)SpecializationDecl as input type.
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitVarTemplateSpecializationDeclImpl(
VarTemplateSpecializationDecl *D) {
RedeclarableResult Redecl = VisitVarDeclImpl(D);
ASTContext &C = Reader.getContext();
if (Decl *InstD = ReadDecl()) {
if (VarTemplateDecl *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
D->SpecializedTemplate = VTD;
} else {
SmallVector<TemplateArgument, 8> TemplArgs;
Record.readTemplateArgumentList(TemplArgs);
TemplateArgumentList *ArgList = TemplateArgumentList::CreateCopy(
C, TemplArgs);
VarTemplateSpecializationDecl::SpecializedPartialSpecialization *PS =
new (C)
VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
PS->PartialSpecialization =
cast<VarTemplatePartialSpecializationDecl>(InstD);
PS->TemplateArgs = ArgList;
D->SpecializedTemplate = PS;
}
}
// Explicit info.
if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
VarTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo =
new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
ExplicitInfo->TypeAsWritten = TyInfo;
ExplicitInfo->ExternLoc = ReadSourceLocation();
ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
D->ExplicitInfo = ExplicitInfo;
}
SmallVector<TemplateArgument, 8> TemplArgs;
Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
D->PointOfInstantiation = ReadSourceLocation();
D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
bool writtenAsCanonicalDecl = Record.readInt();
if (writtenAsCanonicalDecl) {
VarTemplateDecl *CanonPattern = ReadDeclAs<VarTemplateDecl>();
if (D->isCanonicalDecl()) { // It's kept in the folding set.
// FIXME: If it's already present, merge it.
if (VarTemplatePartialSpecializationDecl *Partial =
dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
CanonPattern->getCommonPtr()->PartialSpecializations
.GetOrInsertNode(Partial);
} else {
CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
}
}
}
return Redecl;
}
/// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
/// May require unifying ClassTemplate(Partial)SpecializationDecl and
/// VarTemplate(Partial)SpecializationDecl with a new data
/// structure Template(Partial)SpecializationDecl, and
/// using Template(Partial)SpecializationDecl as input type.
void ASTDeclReader::VisitVarTemplatePartialSpecializationDecl(
VarTemplatePartialSpecializationDecl *D) {
RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
D->TemplateParams = Record.readTemplateParameterList();
D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
// These are read/set from/to the first declaration.
if (ThisDeclID == Redecl.getFirstID()) {
D->InstantiatedFromMember.setPointer(
ReadDeclAs<VarTemplatePartialSpecializationDecl>());
D->InstantiatedFromMember.setInt(Record.readInt());
}
}
void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
VisitTypeDecl(D);
D->setDeclaredWithTypename(Record.readInt());
if (Record.readInt())
D->setDefaultArgument(GetTypeSourceInfo());
}
void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
VisitDeclaratorDecl(D);
// TemplateParmPosition.
D->setDepth(Record.readInt());
D->setPosition(Record.readInt());
if (D->isExpandedParameterPack()) {
auto TypesAndInfos =
D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
new (&TypesAndInfos[I].first) QualType(Record.readType());
TypesAndInfos[I].second = GetTypeSourceInfo();
}
} else {
// Rest of NonTypeTemplateParmDecl.
D->ParameterPack = Record.readInt();
if (Record.readInt())
D->setDefaultArgument(Record.readExpr());
}
}
void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
VisitTemplateDecl(D);
// TemplateParmPosition.
D->setDepth(Record.readInt());
D->setPosition(Record.readInt());
if (D->isExpandedParameterPack()) {
TemplateParameterList **Data =
D->getTrailingObjects<TemplateParameterList *>();
for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
I != N; ++I)
Data[I] = Record.readTemplateParameterList();
} else {
// Rest of TemplateTemplateParmDecl.
D->ParameterPack = Record.readInt();
if (Record.readInt())
D->setDefaultArgument(Reader.getContext(),
Record.readTemplateArgumentLoc());
}
}
void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
VisitRedeclarableTemplateDecl(D);
}
void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
VisitDecl(D);
D->AssertExprAndFailed.setPointer(Record.readExpr());
D->AssertExprAndFailed.setInt(Record.readInt());
D->Message = cast_or_null<StringLiteral>(Record.readExpr());
D->RParenLoc = ReadSourceLocation();
}
void ASTDeclReader::VisitEmptyDecl(EmptyDecl *D) {
VisitDecl(D);
}
std::pair<uint64_t, uint64_t>
ASTDeclReader::VisitDeclContext(DeclContext *DC) {
uint64_t LexicalOffset = ReadLocalOffset();
uint64_t VisibleOffset = ReadLocalOffset();
return std::make_pair(LexicalOffset, VisibleOffset);
}
template <typename T>
ASTDeclReader::RedeclarableResult
ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
DeclID FirstDeclID = ReadDeclID();
Decl *MergeWith = nullptr;
bool IsKeyDecl = ThisDeclID == FirstDeclID;
bool IsFirstLocalDecl = false;
uint64_t RedeclOffset = 0;
// 0 indicates that this declaration was the only declaration of its entity,
// and is used for space optimization.
if (FirstDeclID == 0) {
FirstDeclID = ThisDeclID;
IsKeyDecl = true;
IsFirstLocalDecl = true;
} else if (unsigned N = Record.readInt()) {
// This declaration was the first local declaration, but may have imported
// other declarations.
IsKeyDecl = N == 1;
IsFirstLocalDecl = true;
// We have some declarations that must be before us in our redeclaration
// chain. Read them now, and remember that we ought to merge with one of
// them.
// FIXME: Provide a known merge target to the second and subsequent such
// declaration.
for (unsigned I = 0; I != N - 1; ++I)
MergeWith = ReadDecl();
RedeclOffset = ReadLocalOffset();
} else {
// This declaration was not the first local declaration. Read the first
// local declaration now, to trigger the import of other redeclarations.
(void)ReadDecl();
}
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 = Redeclarable<T>::PreviousDeclLink(FirstDecl);
D->First = FirstDecl->getCanonicalDecl();
}
T *DAsT = static_cast<T*>(D);
// Note that we need to load local redeclarations of this decl and build a
// decl chain for them. This must happen *after* we perform the preloading
// above; this ensures that the redeclaration chain is built in the correct
// order.
if (IsFirstLocalDecl)
Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
}
/// \brief Attempts to merge the given declaration (D) with another declaration
/// of the same entity.
template<typename T>
void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase,
RedeclarableResult &Redecl,
DeclID TemplatePatternID) {
// If modules are not available, there is no reason to perform this merge.
if (!Reader.getContext().getLangOpts().Modules)
return;
// If we're not the canonical declaration, we don't need to merge.
if (!DBase->isFirstDecl())
return;
T *D = static_cast<T*>(DBase);
if (auto *Existing = Redecl.getKnownMergeTarget())
// We already know of an existing declaration we should merge with.
mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
else if (FindExistingResult ExistingRes = findExisting(D))
if (T *Existing = ExistingRes)
mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
}
/// \brief "Cast" to type T, asserting if we don't have an implicit conversion.
/// We use this to put code in a template that will only be valid for certain
/// instantiations.
template<typename T> static T assert_cast(T t) { return t; }
template<typename T> static T assert_cast(...) {
llvm_unreachable("bad assert_cast");
}
/// \brief Merge together the pattern declarations from two template
/// declarations.
void ASTDeclReader::mergeTemplatePattern(RedeclarableTemplateDecl *D,
RedeclarableTemplateDecl *Existing,
DeclID DsID, bool IsKeyDecl) {
auto *DPattern = D->getTemplatedDecl();
auto *ExistingPattern = Existing->getTemplatedDecl();
RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
DPattern->getCanonicalDecl()->getGlobalID(),
IsKeyDecl);
if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
// Merge with any existing definition.
// FIXME: This is duplicated in several places. Refactor.
auto *ExistingClass =
cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
if (auto *DDD = DClass->DefinitionData) {
if (ExistingClass->DefinitionData) {
MergeDefinitionData(ExistingClass, std::move(*