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ASTWriterDecl.cpp
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ASTWriterDecl.cpp
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//===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements serialization for Declarations.
//
//===----------------------------------------------------------------------===//
#include "ASTCommon.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DeclVisitor.h"
#include "clang/AST/Expr.h"
#include "clang/AST/OpenMPClause.h"
#include "clang/AST/PrettyDeclStackTrace.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/ASTRecordWriter.h"
#include "llvm/Bitstream/BitstreamWriter.h"
#include "llvm/Support/ErrorHandling.h"
#include <optional>
using namespace clang;
using namespace serialization;
//===----------------------------------------------------------------------===//
// Declaration serialization
//===----------------------------------------------------------------------===//
namespace clang {
class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> {
ASTWriter &Writer;
ASTContext &Context;
ASTRecordWriter Record;
serialization::DeclCode Code;
unsigned AbbrevToUse;
public:
ASTDeclWriter(ASTWriter &Writer, ASTContext &Context,
ASTWriter::RecordDataImpl &Record)
: Writer(Writer), Context(Context), Record(Writer, Record),
Code((serialization::DeclCode)0), AbbrevToUse(0) {}
uint64_t Emit(Decl *D) {
if (!Code)
llvm::report_fatal_error(StringRef("unexpected declaration kind '") +
D->getDeclKindName() + "'");
return Record.Emit(Code, AbbrevToUse);
}
void Visit(Decl *D);
void VisitDecl(Decl *D);
void VisitPragmaCommentDecl(PragmaCommentDecl *D);
void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
void VisitTranslationUnitDecl(TranslationUnitDecl *D);
void VisitNamedDecl(NamedDecl *D);
void VisitLabelDecl(LabelDecl *LD);
void VisitNamespaceDecl(NamespaceDecl *D);
void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
void VisitTypeDecl(TypeDecl *D);
void VisitTypedefNameDecl(TypedefNameDecl *D);
void VisitTypedefDecl(TypedefDecl *D);
void VisitTypeAliasDecl(TypeAliasDecl *D);
void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
void VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *D);
void VisitTagDecl(TagDecl *D);
void VisitEnumDecl(EnumDecl *D);
void VisitRecordDecl(RecordDecl *D);
void VisitCXXRecordDecl(CXXRecordDecl *D);
void VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D);
void VisitClassTemplatePartialSpecializationDecl(
ClassTemplatePartialSpecializationDecl *D);
void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
void VisitVarTemplatePartialSpecializationDecl(
VarTemplatePartialSpecializationDecl *D);
void VisitClassScopeFunctionSpecializationDecl(
ClassScopeFunctionSpecializationDecl *D);
void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
void VisitValueDecl(ValueDecl *D);
void VisitEnumConstantDecl(EnumConstantDecl *D);
void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
void VisitDeclaratorDecl(DeclaratorDecl *D);
void VisitFunctionDecl(FunctionDecl *D);
void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D);
void VisitCXXMethodDecl(CXXMethodDecl *D);
void VisitCXXConstructorDecl(CXXConstructorDecl *D);
void VisitCXXDestructorDecl(CXXDestructorDecl *D);
void VisitCXXConversionDecl(CXXConversionDecl *D);
void VisitFieldDecl(FieldDecl *D);
void VisitMSPropertyDecl(MSPropertyDecl *D);
void VisitMSGuidDecl(MSGuidDecl *D);
void VisitUnnamedGlobalConstantDecl(UnnamedGlobalConstantDecl *D);
void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D);
void VisitIndirectFieldDecl(IndirectFieldDecl *D);
void VisitVarDecl(VarDecl *D);
void VisitImplicitParamDecl(ImplicitParamDecl *D);
void VisitParmVarDecl(ParmVarDecl *D);
void VisitDecompositionDecl(DecompositionDecl *D);
void VisitBindingDecl(BindingDecl *D);
void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
void VisitTemplateDecl(TemplateDecl *D);
void VisitConceptDecl(ConceptDecl *D);
void VisitImplicitConceptSpecializationDecl(
ImplicitConceptSpecializationDecl *D);
void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D);
void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
void VisitClassTemplateDecl(ClassTemplateDecl *D);
void VisitVarTemplateDecl(VarTemplateDecl *D);
void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
void VisitUsingDecl(UsingDecl *D);
void VisitUsingEnumDecl(UsingEnumDecl *D);
void VisitUsingPackDecl(UsingPackDecl *D);
void VisitUsingShadowDecl(UsingShadowDecl *D);
void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
void VisitLinkageSpecDecl(LinkageSpecDecl *D);
void VisitExportDecl(ExportDecl *D);
void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
void VisitTopLevelStmtDecl(TopLevelStmtDecl *D);
void VisitImportDecl(ImportDecl *D);
void VisitAccessSpecDecl(AccessSpecDecl *D);
void VisitFriendDecl(FriendDecl *D);
void VisitFriendTemplateDecl(FriendTemplateDecl *D);
void VisitStaticAssertDecl(StaticAssertDecl *D);
void VisitBlockDecl(BlockDecl *D);
void VisitCapturedDecl(CapturedDecl *D);
void VisitEmptyDecl(EmptyDecl *D);
void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
void VisitDeclContext(DeclContext *DC);
template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
void VisitHLSLBufferDecl(HLSLBufferDecl *D);
// FIXME: Put in the same order is 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 VisitOMPAllocateDecl(OMPAllocateDecl *D);
void VisitOMPRequiresDecl(OMPRequiresDecl *D);
void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D);
void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
/// Add an Objective-C type parameter list to the given record.
void AddObjCTypeParamList(ObjCTypeParamList *typeParams) {
// Empty type parameter list.
if (!typeParams) {
Record.push_back(0);
return;
}
Record.push_back(typeParams->size());
for (auto *typeParam : *typeParams) {
Record.AddDeclRef(typeParam);
}
Record.AddSourceLocation(typeParams->getLAngleLoc());
Record.AddSourceLocation(typeParams->getRAngleLoc());
}
/// Add to the record the first declaration from each module file that
/// provides a declaration of D. The intent is to provide a sufficient
/// set such that reloading this set will load all current redeclarations.
void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) {
llvm::MapVector<ModuleFile*, const Decl*> Firsts;
// FIXME: We can skip entries that we know are implied by others.
for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) {
if (R->isFromASTFile())
Firsts[Writer.Chain->getOwningModuleFile(R)] = R;
else if (IncludeLocal)
Firsts[nullptr] = R;
}
for (const auto &F : Firsts)
Record.AddDeclRef(F.second);
}
/// Get the specialization decl from an entry in the specialization list.
template <typename EntryType>
typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType *
getSpecializationDecl(EntryType &T) {
return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T);
}
/// Get the list of partial specializations from a template's common ptr.
template<typename T>
decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) {
return Common->PartialSpecializations;
}
ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) {
return std::nullopt;
}
template<typename DeclTy>
void AddTemplateSpecializations(DeclTy *D) {
auto *Common = D->getCommonPtr();
// If we have any lazy specializations, and the external AST source is
// our chained AST reader, we can just write out the DeclIDs. Otherwise,
// we need to resolve them to actual declarations.
if (Writer.Chain != Writer.Context->getExternalSource() &&
Common->LazySpecializations) {
D->LoadLazySpecializations();
assert(!Common->LazySpecializations);
}
ArrayRef<DeclID> LazySpecializations;
if (auto *LS = Common->LazySpecializations)
LazySpecializations = llvm::ArrayRef(LS + 1, LS[0]);
// Add a slot to the record for the number of specializations.
unsigned I = Record.size();
Record.push_back(0);
// AddFirstDeclFromEachModule might trigger deserialization, invalidating
// *Specializations iterators.
llvm::SmallVector<const Decl*, 16> Specs;
for (auto &Entry : Common->Specializations)
Specs.push_back(getSpecializationDecl(Entry));
for (auto &Entry : getPartialSpecializations(Common))
Specs.push_back(getSpecializationDecl(Entry));
for (auto *D : Specs) {
assert(D->isCanonicalDecl() && "non-canonical decl in set");
AddFirstDeclFromEachModule(D, /*IncludeLocal*/true);
}
Record.append(LazySpecializations.begin(), LazySpecializations.end());
// Update the size entry we added earlier.
Record[I] = Record.size() - I - 1;
}
/// Ensure that this template specialization is associated with the specified
/// template on reload.
void RegisterTemplateSpecialization(const Decl *Template,
const Decl *Specialization) {
Template = Template->getCanonicalDecl();
// If the canonical template is local, we'll write out this specialization
// when we emit it.
// FIXME: We can do the same thing if there is any local declaration of
// the template, to avoid emitting an update record.
if (!Template->isFromASTFile())
return;
// We only need to associate the first local declaration of the
// specialization. The other declarations will get pulled in by it.
if (Writer.getFirstLocalDecl(Specialization) != Specialization)
return;
Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate(
UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization));
}
};
}
void ASTDeclWriter::Visit(Decl *D) {
DeclVisitor<ASTDeclWriter>::Visit(D);
// Source locations require array (variable-length) abbreviations. The
// abbreviation infrastructure requires that arrays are encoded last, so
// we handle it here in the case of those classes derived from DeclaratorDecl
if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
if (auto *TInfo = DD->getTypeSourceInfo())
Record.AddTypeLoc(TInfo->getTypeLoc());
}
// Handle FunctionDecl's body here and write it after all other Stmts/Exprs
// have been written. We want it last because we will not read it back when
// retrieving it from the AST, we'll just lazily set the offset.
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
Record.push_back(FD->doesThisDeclarationHaveABody());
if (FD->doesThisDeclarationHaveABody())
Record.AddFunctionDefinition(FD);
}
// If this declaration is also a DeclContext, write blocks for the
// declarations that lexically stored inside its context and those
// declarations that are visible from its context.
if (DeclContext *DC = dyn_cast<DeclContext>(D))
VisitDeclContext(DC);
}
void ASTDeclWriter::VisitDecl(Decl *D) {
Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()));
if (D->getDeclContext() != D->getLexicalDeclContext())
Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()));
else
Record.push_back(0);
Record.push_back(D->isInvalidDecl());
Record.push_back(D->hasAttrs());
if (D->hasAttrs())
Record.AddAttributes(D->getAttrs());
Record.push_back(D->isImplicit());
Record.push_back(D->isUsed(false));
Record.push_back(D->isReferenced());
Record.push_back(D->isTopLevelDeclInObjCContainer());
Record.push_back(D->getAccess());
Record.push_back((uint64_t)D->getModuleOwnershipKind());
Record.push_back(Writer.getSubmoduleID(D->getOwningModule()));
// If this declaration injected a name into a context different from its
// lexical context, and that context is an imported namespace, we need to
// update its visible declarations to include this name.
//
// This happens when we instantiate a class with a friend declaration or a
// function with a local extern declaration, for instance.
//
// FIXME: Can we handle this in AddedVisibleDecl instead?
if (D->isOutOfLine()) {
auto *DC = D->getDeclContext();
while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) {
if (!NS->isFromASTFile())
break;
Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext());
if (!NS->isInlineNamespace())
break;
DC = NS->getParent();
}
}
}
void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
StringRef Arg = D->getArg();
Record.push_back(Arg.size());
VisitDecl(D);
Record.AddSourceLocation(D->getBeginLoc());
Record.push_back(D->getCommentKind());
Record.AddString(Arg);
Code = serialization::DECL_PRAGMA_COMMENT;
}
void ASTDeclWriter::VisitPragmaDetectMismatchDecl(
PragmaDetectMismatchDecl *D) {
StringRef Name = D->getName();
StringRef Value = D->getValue();
Record.push_back(Name.size() + 1 + Value.size());
VisitDecl(D);
Record.AddSourceLocation(D->getBeginLoc());
Record.AddString(Name);
Record.AddString(Value);
Code = serialization::DECL_PRAGMA_DETECT_MISMATCH;
}
void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
llvm_unreachable("Translation units aren't directly serialized");
}
void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
VisitDecl(D);
Record.AddDeclarationName(D->getDeclName());
Record.push_back(needsAnonymousDeclarationNumber(D)
? Writer.getAnonymousDeclarationNumber(D)
: 0);
}
void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
VisitNamedDecl(D);
Record.AddSourceLocation(D->getBeginLoc());
Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
}
void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) {
VisitRedeclarable(D);
VisitTypeDecl(D);
Record.AddTypeSourceInfo(D->getTypeSourceInfo());
Record.push_back(D->isModed());
if (D->isModed())
Record.AddTypeRef(D->getUnderlyingType());
Record.AddDeclRef(D->getAnonDeclWithTypedefName(false));
}
void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
VisitTypedefNameDecl(D);
if (D->getDeclContext() == D->getLexicalDeclContext() &&
!D->hasAttrs() &&
!D->isImplicit() &&
D->getFirstDecl() == D->getMostRecentDecl() &&
!D->isInvalidDecl() &&
!D->isTopLevelDeclInObjCContainer() &&
!D->isModulePrivate() &&
!needsAnonymousDeclarationNumber(D) &&
D->getDeclName().getNameKind() == DeclarationName::Identifier)
AbbrevToUse = Writer.getDeclTypedefAbbrev();
Code = serialization::DECL_TYPEDEF;
}
void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) {
VisitTypedefNameDecl(D);
Record.AddDeclRef(D->getDescribedAliasTemplate());
Code = serialization::DECL_TYPEALIAS;
}
void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
static_assert(DeclContext::NumTagDeclBits == 10,
"You need to update the serializer after you change the "
"TagDeclBits");
VisitRedeclarable(D);
VisitTypeDecl(D);
Record.push_back(D->getIdentifierNamespace());
Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
if (!isa<CXXRecordDecl>(D))
Record.push_back(D->isCompleteDefinition());
Record.push_back(D->isEmbeddedInDeclarator());
Record.push_back(D->isFreeStanding());
Record.push_back(D->isCompleteDefinitionRequired());
Record.AddSourceRange(D->getBraceRange());
if (D->hasExtInfo()) {
Record.push_back(1);
Record.AddQualifierInfo(*D->getExtInfo());
} else if (auto *TD = D->getTypedefNameForAnonDecl()) {
Record.push_back(2);
Record.AddDeclRef(TD);
Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo());
} else {
Record.push_back(0);
}
}
void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
static_assert(DeclContext::NumEnumDeclBits == 20,
"You need to update the serializer after you change the "
"EnumDeclBits");
VisitTagDecl(D);
Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo());
if (!D->getIntegerTypeSourceInfo())
Record.AddTypeRef(D->getIntegerType());
Record.AddTypeRef(D->getPromotionType());
Record.push_back(D->getNumPositiveBits());
Record.push_back(D->getNumNegativeBits());
Record.push_back(D->isScoped());
Record.push_back(D->isScopedUsingClassTag());
Record.push_back(D->isFixed());
Record.push_back(D->getODRHash());
if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
Record.push_back(MemberInfo->getTemplateSpecializationKind());
Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
} else {
Record.AddDeclRef(nullptr);
}
if (D->getDeclContext() == D->getLexicalDeclContext() &&
!D->hasAttrs() &&
!D->isImplicit() &&
!D->isUsed(false) &&
!D->hasExtInfo() &&
!D->getTypedefNameForAnonDecl() &&
D->getFirstDecl() == D->getMostRecentDecl() &&
!D->isInvalidDecl() &&
!D->isReferenced() &&
!D->isTopLevelDeclInObjCContainer() &&
D->getAccess() == AS_none &&
!D->isModulePrivate() &&
!CXXRecordDecl::classofKind(D->getKind()) &&
!D->getIntegerTypeSourceInfo() &&
!D->getMemberSpecializationInfo() &&
!needsAnonymousDeclarationNumber(D) &&
D->getDeclName().getNameKind() == DeclarationName::Identifier)
AbbrevToUse = Writer.getDeclEnumAbbrev();
Code = serialization::DECL_ENUM;
}
void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
static_assert(DeclContext::NumRecordDeclBits == 41,
"You need to update the serializer after you change the "
"RecordDeclBits");
VisitTagDecl(D);
Record.push_back(D->hasFlexibleArrayMember());
Record.push_back(D->isAnonymousStructOrUnion());
Record.push_back(D->hasObjectMember());
Record.push_back(D->hasVolatileMember());
Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize());
Record.push_back(D->isNonTrivialToPrimitiveCopy());
Record.push_back(D->isNonTrivialToPrimitiveDestroy());
Record.push_back(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion());
Record.push_back(D->hasNonTrivialToPrimitiveDestructCUnion());
Record.push_back(D->hasNonTrivialToPrimitiveCopyCUnion());
Record.push_back(D->isParamDestroyedInCallee());
Record.push_back(D->getArgPassingRestrictions());
// Only compute this for C/Objective-C, in C++ this is computed as part
// of CXXRecordDecl.
if (!isa<CXXRecordDecl>(D))
Record.push_back(D->getODRHash());
if (D->getDeclContext() == D->getLexicalDeclContext() &&
!D->hasAttrs() &&
!D->isImplicit() &&
!D->isUsed(false) &&
!D->hasExtInfo() &&
!D->getTypedefNameForAnonDecl() &&
D->getFirstDecl() == D->getMostRecentDecl() &&
!D->isInvalidDecl() &&
!D->isReferenced() &&
!D->isTopLevelDeclInObjCContainer() &&
D->getAccess() == AS_none &&
!D->isModulePrivate() &&
!CXXRecordDecl::classofKind(D->getKind()) &&
!needsAnonymousDeclarationNumber(D) &&
D->getDeclName().getNameKind() == DeclarationName::Identifier)
AbbrevToUse = Writer.getDeclRecordAbbrev();
Code = serialization::DECL_RECORD;
}
void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
VisitNamedDecl(D);
Record.AddTypeRef(D->getType());
}
void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
VisitValueDecl(D);
Record.push_back(D->getInitExpr()? 1 : 0);
if (D->getInitExpr())
Record.AddStmt(D->getInitExpr());
Record.AddAPSInt(D->getInitVal());
Code = serialization::DECL_ENUM_CONSTANT;
}
void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
VisitValueDecl(D);
Record.AddSourceLocation(D->getInnerLocStart());
Record.push_back(D->hasExtInfo());
if (D->hasExtInfo()) {
DeclaratorDecl::ExtInfo *Info = D->getExtInfo();
Record.AddQualifierInfo(*Info);
Record.AddStmt(Info->TrailingRequiresClause);
}
// The location information is deferred until the end of the record.
Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType()
: QualType());
}
void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
static_assert(DeclContext::NumFunctionDeclBits == 29,
"You need to update the serializer after you change the "
"FunctionDeclBits");
VisitRedeclarable(D);
Record.push_back(D->getTemplatedKind());
switch (D->getTemplatedKind()) {
case FunctionDecl::TK_NonTemplate:
break;
case FunctionDecl::TK_DependentNonTemplate:
Record.AddDeclRef(D->getInstantiatedFromDecl());
break;
case FunctionDecl::TK_FunctionTemplate:
Record.AddDeclRef(D->getDescribedFunctionTemplate());
break;
case FunctionDecl::TK_MemberSpecialization: {
MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
Record.push_back(MemberInfo->getTemplateSpecializationKind());
Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
break;
}
case FunctionDecl::TK_FunctionTemplateSpecialization: {
FunctionTemplateSpecializationInfo *
FTSInfo = D->getTemplateSpecializationInfo();
RegisterTemplateSpecialization(FTSInfo->getTemplate(), D);
Record.AddDeclRef(FTSInfo->getTemplate());
Record.push_back(FTSInfo->getTemplateSpecializationKind());
// Template arguments.
Record.AddTemplateArgumentList(FTSInfo->TemplateArguments);
// Template args as written.
Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr);
if (FTSInfo->TemplateArgumentsAsWritten) {
Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs);
for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs;
i!=e; ++i)
Record.AddTemplateArgumentLoc(
(*FTSInfo->TemplateArgumentsAsWritten)[i]);
Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc);
Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc);
}
Record.AddSourceLocation(FTSInfo->getPointOfInstantiation());
if (MemberSpecializationInfo *MemberInfo =
FTSInfo->getMemberSpecializationInfo()) {
Record.push_back(1);
Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
Record.push_back(MemberInfo->getTemplateSpecializationKind());
Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
} else {
Record.push_back(0);
}
if (D->isCanonicalDecl()) {
// Write the template that contains the specializations set. We will
// add a FunctionTemplateSpecializationInfo to it when reading.
Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl());
}
break;
}
case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
DependentFunctionTemplateSpecializationInfo *
DFTSInfo = D->getDependentSpecializationInfo();
// Templates.
Record.push_back(DFTSInfo->getNumTemplates());
for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
Record.AddDeclRef(DFTSInfo->getTemplate(i));
// Templates args.
Record.push_back(DFTSInfo->getNumTemplateArgs());
for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i));
Record.AddSourceLocation(DFTSInfo->getLAngleLoc());
Record.AddSourceLocation(DFTSInfo->getRAngleLoc());
break;
}
}
VisitDeclaratorDecl(D);
Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
Record.push_back(D->getIdentifierNamespace());
// FunctionDecl's body is handled last at ASTWriterDecl::Visit,
// after everything else is written.
Record.push_back(
static_cast<int>(D->getStorageClass())); // FIXME: stable encoding
Record.push_back(D->isInlineSpecified());
Record.push_back(D->isInlined());
Record.push_back(D->isVirtualAsWritten());
Record.push_back(D->isPure());
Record.push_back(D->hasInheritedPrototype());
Record.push_back(D->hasWrittenPrototype());
Record.push_back(D->isDeletedBit());
Record.push_back(D->isTrivial());
Record.push_back(D->isTrivialForCall());
Record.push_back(D->isDefaulted());
Record.push_back(D->isExplicitlyDefaulted());
Record.push_back(D->isIneligibleOrNotSelected());
Record.push_back(D->hasImplicitReturnZero());
Record.push_back(static_cast<uint64_t>(D->getConstexprKind()));
Record.push_back(D->usesSEHTry());
Record.push_back(D->hasSkippedBody());
Record.push_back(D->isMultiVersion());
Record.push_back(D->isLateTemplateParsed());
Record.push_back(D->FriendConstraintRefersToEnclosingTemplate());
Record.push_back(D->getLinkageInternal());
Record.AddSourceLocation(D->getEndLoc());
Record.AddSourceLocation(D->getDefaultLoc());
Record.push_back(D->getODRHash());
if (D->isDefaulted()) {
if (auto *FDI = D->getDefaultedFunctionInfo()) {
Record.push_back(FDI->getUnqualifiedLookups().size());
for (DeclAccessPair P : FDI->getUnqualifiedLookups()) {
Record.AddDeclRef(P.getDecl());
Record.push_back(P.getAccess());
}
} else {
Record.push_back(0);
}
}
Record.push_back(D->param_size());
for (auto *P : D->parameters())
Record.AddDeclRef(P);
Code = serialization::DECL_FUNCTION;
}
static void addExplicitSpecifier(ExplicitSpecifier ES,
ASTRecordWriter &Record) {
uint64_t Kind = static_cast<uint64_t>(ES.getKind());
Kind = Kind << 1 | static_cast<bool>(ES.getExpr());
Record.push_back(Kind);
if (ES.getExpr()) {
Record.AddStmt(ES.getExpr());
}
}
void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
addExplicitSpecifier(D->getExplicitSpecifier(), Record);
Record.AddDeclRef(D->Ctor);
VisitFunctionDecl(D);
Record.push_back(D->isCopyDeductionCandidate());
Code = serialization::DECL_CXX_DEDUCTION_GUIDE;
}
void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
static_assert(DeclContext::NumObjCMethodDeclBits == 24,
"You need to update the serializer after you change the "
"ObjCMethodDeclBits");
VisitNamedDecl(D);
// FIXME: convert to LazyStmtPtr?
// Unlike C/C++, method bodies will never be in header files.
bool HasBodyStuff = D->getBody() != nullptr;
Record.push_back(HasBodyStuff);
if (HasBodyStuff) {
Record.AddStmt(D->getBody());
}
Record.AddDeclRef(D->getSelfDecl());
Record.AddDeclRef(D->getCmdDecl());
Record.push_back(D->isInstanceMethod());
Record.push_back(D->isVariadic());
Record.push_back(D->isPropertyAccessor());
Record.push_back(D->isSynthesizedAccessorStub());
Record.push_back(D->isDefined());
Record.push_back(D->isOverriding());
Record.push_back(D->hasSkippedBody());
Record.push_back(D->isRedeclaration());
Record.push_back(D->hasRedeclaration());
if (D->hasRedeclaration()) {
assert(Context.getObjCMethodRedeclaration(D));
Record.AddDeclRef(Context.getObjCMethodRedeclaration(D));
}
// FIXME: stable encoding for @required/@optional
Record.push_back(D->getImplementationControl());
// FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability
Record.push_back(D->getObjCDeclQualifier());
Record.push_back(D->hasRelatedResultType());
Record.AddTypeRef(D->getReturnType());
Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo());
Record.AddSourceLocation(D->getEndLoc());
Record.push_back(D->param_size());
for (const auto *P : D->parameters())
Record.AddDeclRef(P);
Record.push_back(D->getSelLocsKind());
unsigned NumStoredSelLocs = D->getNumStoredSelLocs();
SourceLocation *SelLocs = D->getStoredSelLocs();
Record.push_back(NumStoredSelLocs);
for (unsigned i = 0; i != NumStoredSelLocs; ++i)
Record.AddSourceLocation(SelLocs[i]);
Code = serialization::DECL_OBJC_METHOD;
}
void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
VisitTypedefNameDecl(D);
Record.push_back(D->Variance);
Record.push_back(D->Index);
Record.AddSourceLocation(D->VarianceLoc);
Record.AddSourceLocation(D->ColonLoc);
Code = serialization::DECL_OBJC_TYPE_PARAM;
}
void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
static_assert(DeclContext::NumObjCContainerDeclBits == 51,
"You need to update the serializer after you change the "
"ObjCContainerDeclBits");
VisitNamedDecl(D);
Record.AddSourceLocation(D->getAtStartLoc());
Record.AddSourceRange(D->getAtEndRange());
// Abstract class (no need to define a stable serialization::DECL code).
}
void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
VisitRedeclarable(D);
VisitObjCContainerDecl(D);
Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
AddObjCTypeParamList(D->TypeParamList);
Record.push_back(D->isThisDeclarationADefinition());
if (D->isThisDeclarationADefinition()) {
// Write the DefinitionData
ObjCInterfaceDecl::DefinitionData &Data = D->data();
Record.AddTypeSourceInfo(D->getSuperClassTInfo());
Record.AddSourceLocation(D->getEndOfDefinitionLoc());
Record.push_back(Data.HasDesignatedInitializers);
Record.push_back(D->getODRHash());
// Write out the protocols that are directly referenced by the @interface.
Record.push_back(Data.ReferencedProtocols.size());
for (const auto *P : D->protocols())
Record.AddDeclRef(P);
for (const auto &PL : D->protocol_locs())
Record.AddSourceLocation(PL);
// Write out the protocols that are transitively referenced.
Record.push_back(Data.AllReferencedProtocols.size());
for (ObjCList<ObjCProtocolDecl>::iterator
P = Data.AllReferencedProtocols.begin(),
PEnd = Data.AllReferencedProtocols.end();
P != PEnd; ++P)
Record.AddDeclRef(*P);
if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) {
// Ensure that we write out the set of categories for this class.
Writer.ObjCClassesWithCategories.insert(D);
// Make sure that the categories get serialized.
for (; Cat; Cat = Cat->getNextClassCategoryRaw())
(void)Writer.GetDeclRef(Cat);
}
}
Code = serialization::DECL_OBJC_INTERFACE;
}
void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
VisitFieldDecl(D);
// FIXME: stable encoding for @public/@private/@protected/@package
Record.push_back(D->getAccessControl());
Record.push_back(D->getSynthesize());
if (D->getDeclContext() == D->getLexicalDeclContext() &&
!D->hasAttrs() &&
!D->isImplicit() &&
!D->isUsed(false) &&
!D->isInvalidDecl() &&
!D->isReferenced() &&
!D->isModulePrivate() &&
!D->getBitWidth() &&
!D->hasExtInfo() &&
D->getDeclName())
AbbrevToUse = Writer.getDeclObjCIvarAbbrev();
Code = serialization::DECL_OBJC_IVAR;
}
void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
VisitRedeclarable(D);
VisitObjCContainerDecl(D);
Record.push_back(D->isThisDeclarationADefinition());
if (D->isThisDeclarationADefinition()) {
Record.push_back(D->protocol_size());
for (const auto *I : D->protocols())
Record.AddDeclRef(I);
for (const auto &PL : D->protocol_locs())
Record.AddSourceLocation(PL);
Record.push_back(D->getODRHash());
}
Code = serialization::DECL_OBJC_PROTOCOL;
}
void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
VisitFieldDecl(D);
Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
}
void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
VisitObjCContainerDecl(D);
Record.AddSourceLocation(D->getCategoryNameLoc());
Record.AddSourceLocation(D->getIvarLBraceLoc());
Record.AddSourceLocation(D->getIvarRBraceLoc());
Record.AddDeclRef(D->getClassInterface());
AddObjCTypeParamList(D->TypeParamList);
Record.push_back(D->protocol_size());
for (const auto *I : D->protocols())
Record.AddDeclRef(I);
for (const auto &PL : D->protocol_locs())
Record.AddSourceLocation(PL);
Code = serialization::DECL_OBJC_CATEGORY;
}
void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
VisitNamedDecl(D);
Record.AddDeclRef(D->getClassInterface());
Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
}
void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
VisitNamedDecl(D);
Record.AddSourceLocation(D->getAtLoc());
Record.AddSourceLocation(D->getLParenLoc());
Record.AddTypeRef(D->getType());
Record.AddTypeSourceInfo(D->getTypeSourceInfo());
// FIXME: stable encoding
Record.push_back((unsigned)D->getPropertyAttributes());
Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
// FIXME: stable encoding
Record.push_back((unsigned)D->getPropertyImplementation());
Record.AddDeclarationName(D->getGetterName());
Record.AddSourceLocation(D->getGetterNameLoc());
Record.AddDeclarationName(D->getSetterName());
Record.AddSourceLocation(D->getSetterNameLoc());
Record.AddDeclRef(D->getGetterMethodDecl());
Record.AddDeclRef(D->getSetterMethodDecl());
Record.AddDeclRef(D->getPropertyIvarDecl());
Code = serialization::DECL_OBJC_PROPERTY;
}
void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
VisitObjCContainerDecl(D);
Record.AddDeclRef(D->getClassInterface());
// Abstract class (no need to define a stable serialization::DECL code).
}
void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
VisitObjCImplDecl(D);
Record.AddSourceLocation(D->getCategoryNameLoc());
Code = serialization::DECL_OBJC_CATEGORY_IMPL;
}
void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
VisitObjCImplDecl(D);
Record.AddDeclRef(D->getSuperClass());
Record.AddSourceLocation(D->getSuperClassLoc());
Record.AddSourceLocation(D->getIvarLBraceLoc());
Record.AddSourceLocation(D->getIvarRBraceLoc());
Record.push_back(D->hasNonZeroConstructors());
Record.push_back(D->hasDestructors());
Record.push_back(D->NumIvarInitializers);
if (D->NumIvarInitializers)
Record.AddCXXCtorInitializers(
llvm::ArrayRef(D->init_begin(), D->init_end()));
Code = serialization::DECL_OBJC_IMPLEMENTATION;
}
void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
VisitDecl(D);
Record.AddSourceLocation(D->getBeginLoc());
Record.AddDeclRef(D->getPropertyDecl());
Record.AddDeclRef(D->getPropertyIvarDecl());
Record.AddSourceLocation(D->getPropertyIvarDeclLoc());
Record.AddDeclRef(D->getGetterMethodDecl());
Record.AddDeclRef(D->getSetterMethodDecl());
Record.AddStmt(D->getGetterCXXConstructor());
Record.AddStmt(D->getSetterCXXAssignment());
Code = serialization::DECL_OBJC_PROPERTY_IMPL;
}
void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
VisitDeclaratorDecl(D);
Record.push_back(D->isMutable());
FieldDecl::InitStorageKind ISK = D->InitStorage.getInt();
Record.push_back(ISK);
if (ISK == FieldDecl::ISK_CapturedVLAType)
Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0));
else if (ISK)
Record.AddStmt(D->getInClassInitializer());
Record.AddStmt(D->getBitWidth());
if (!D->getDeclName())
Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D));
if (D->getDeclContext() == D->getLexicalDeclContext() &&
!D->hasAttrs() &&
!D->isImplicit() &&
!D->isUsed(false) &&
!D->isInvalidDecl() &&
!D->isReferenced() &&
!D->isTopLevelDeclInObjCContainer() &&
!D->isModulePrivate() &&
!D->getBitWidth() &&
!D->hasInClassInitializer() &&
!D->hasCapturedVLAType() &&
!D->hasExtInfo() &&
!ObjCIvarDecl::classofKind(D->getKind()) &&
!ObjCAtDefsFieldDecl::classofKind(D->getKind()) &&
D->getDeclName())
AbbrevToUse = Writer.getDeclFieldAbbrev();
Code = serialization::DECL_FIELD;
}
void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) {
VisitDeclaratorDecl(D);
Record.AddIdentifierRef(D->getGetterId());
Record.AddIdentifierRef(D->getSetterId());
Code = serialization::DECL_MS_PROPERTY;
}