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Diffstat (limited to 'lib/Frontend/PCHWriterDecl.cpp')
| -rw-r--r-- | lib/Frontend/PCHWriterDecl.cpp | 1172 |
1 files changed, 0 insertions, 1172 deletions
diff --git a/lib/Frontend/PCHWriterDecl.cpp b/lib/Frontend/PCHWriterDecl.cpp deleted file mode 100644 index bc4452e..0000000 --- a/lib/Frontend/PCHWriterDecl.cpp +++ /dev/null @@ -1,1172 +0,0 @@ -//===--- PCHWriterDecl.cpp - Declaration Serialization --------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements serialization for Declarations. -// -//===----------------------------------------------------------------------===// - -#include "clang/Frontend/PCHWriter.h" -#include "clang/AST/DeclVisitor.h" -#include "clang/AST/DeclCXX.h" -#include "clang/AST/DeclTemplate.h" -#include "clang/AST/Expr.h" -#include "llvm/ADT/Twine.h" -#include "llvm/Bitcode/BitstreamWriter.h" -#include "llvm/Support/ErrorHandling.h" -using namespace clang; - -//===----------------------------------------------------------------------===// -// Declaration serialization -//===----------------------------------------------------------------------===// - -namespace clang { - class PCHDeclWriter : public DeclVisitor<PCHDeclWriter, void> { - - PCHWriter &Writer; - ASTContext &Context; - PCHWriter::RecordData &Record; - - public: - pch::DeclCode Code; - unsigned AbbrevToUse; - - PCHDeclWriter(PCHWriter &Writer, ASTContext &Context, - PCHWriter::RecordData &Record) - : Writer(Writer), Context(Context), Record(Record) { - } - - void Visit(Decl *D); - - void VisitDecl(Decl *D); - void VisitTranslationUnitDecl(TranslationUnitDecl *D); - void VisitNamedDecl(NamedDecl *D); - void VisitNamespaceDecl(NamespaceDecl *D); - void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); - void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); - void VisitTypeDecl(TypeDecl *D); - void VisitTypedefDecl(TypedefDecl *D); - void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *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 VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); - void VisitValueDecl(ValueDecl *D); - void VisitEnumConstantDecl(EnumConstantDecl *D); - void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); - void VisitDeclaratorDecl(DeclaratorDecl *D); - void VisitFunctionDecl(FunctionDecl *D); - void VisitCXXMethodDecl(CXXMethodDecl *D); - void VisitCXXConstructorDecl(CXXConstructorDecl *D); - void VisitCXXDestructorDecl(CXXDestructorDecl *D); - void VisitCXXConversionDecl(CXXConversionDecl *D); - void VisitFieldDecl(FieldDecl *D); - void VisitVarDecl(VarDecl *D); - void VisitImplicitParamDecl(ImplicitParamDecl *D); - void VisitParmVarDecl(ParmVarDecl *D); - void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); - void VisitTemplateDecl(TemplateDecl *D); - void VisitClassTemplateDecl(ClassTemplateDecl *D); - void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); - void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); - void VisitUsingDecl(UsingDecl *D); - void VisitUsingShadowDecl(UsingShadowDecl *D); - void VisitLinkageSpecDecl(LinkageSpecDecl *D); - void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); - void VisitAccessSpecDecl(AccessSpecDecl *D); - void VisitFriendDecl(FriendDecl *D); - void VisitFriendTemplateDecl(FriendTemplateDecl *D); - void VisitStaticAssertDecl(StaticAssertDecl *D); - void VisitBlockDecl(BlockDecl *D); - - void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, - uint64_t VisibleOffset); - - - // FIXME: Put in the same order is DeclNodes.td? - void VisitObjCMethodDecl(ObjCMethodDecl *D); - void VisitObjCContainerDecl(ObjCContainerDecl *D); - void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); - void VisitObjCIvarDecl(ObjCIvarDecl *D); - void VisitObjCProtocolDecl(ObjCProtocolDecl *D); - void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); - void VisitObjCClassDecl(ObjCClassDecl *D); - void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); - void VisitObjCCategoryDecl(ObjCCategoryDecl *D); - void VisitObjCImplDecl(ObjCImplDecl *D); - void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); - void VisitObjCImplementationDecl(ObjCImplementationDecl *D); - void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); - void VisitObjCPropertyDecl(ObjCPropertyDecl *D); - void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); - }; -} - -void PCHDeclWriter::Visit(Decl *D) { - DeclVisitor<PCHDeclWriter>::Visit(D); - - // 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 PCH, we'll just lazily set the offset. - if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { - Record.push_back(FD->isThisDeclarationADefinition()); - if (FD->isThisDeclarationADefinition()) - Writer.AddStmt(FD->getBody()); - } -} - -void PCHDeclWriter::VisitDecl(Decl *D) { - Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); - Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); - Writer.AddSourceLocation(D->getLocation(), Record); - Record.push_back(D->isInvalidDecl()); - Record.push_back(D->hasAttrs()); - Record.push_back(D->isImplicit()); - Record.push_back(D->isUsed(false)); - Record.push_back(D->getAccess()); - Record.push_back(D->getPCHLevel()); -} - -void PCHDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { - VisitDecl(D); - Writer.AddDeclRef(D->getAnonymousNamespace(), Record); - Code = pch::DECL_TRANSLATION_UNIT; -} - -void PCHDeclWriter::VisitNamedDecl(NamedDecl *D) { - VisitDecl(D); - Writer.AddDeclarationName(D->getDeclName(), Record); -} - -void PCHDeclWriter::VisitTypeDecl(TypeDecl *D) { - VisitNamedDecl(D); - Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); -} - -void PCHDeclWriter::VisitTypedefDecl(TypedefDecl *D) { - VisitTypeDecl(D); - Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); - Code = pch::DECL_TYPEDEF; -} - -void PCHDeclWriter::VisitTagDecl(TagDecl *D) { - VisitTypeDecl(D); - Record.push_back(D->getIdentifierNamespace()); - Writer.AddDeclRef(D->getPreviousDeclaration(), Record); - Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding - Record.push_back(D->isDefinition()); - Record.push_back(D->isEmbeddedInDeclarator()); - Writer.AddSourceLocation(D->getRBraceLoc(), Record); - Writer.AddSourceLocation(D->getTagKeywordLoc(), Record); - // FIXME: maybe write optional qualifier and its range. - Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record); -} - -void PCHDeclWriter::VisitEnumDecl(EnumDecl *D) { - VisitTagDecl(D); - Writer.AddTypeRef(D->getIntegerType(), Record); - Writer.AddTypeRef(D->getPromotionType(), Record); - Record.push_back(D->getNumPositiveBits()); - Record.push_back(D->getNumNegativeBits()); - Writer.AddDeclRef(D->getInstantiatedFromMemberEnum(), Record); - Code = pch::DECL_ENUM; -} - -void PCHDeclWriter::VisitRecordDecl(RecordDecl *D) { - VisitTagDecl(D); - Record.push_back(D->hasFlexibleArrayMember()); - Record.push_back(D->isAnonymousStructOrUnion()); - Record.push_back(D->hasObjectMember()); - Code = pch::DECL_RECORD; -} - -void PCHDeclWriter::VisitValueDecl(ValueDecl *D) { - VisitNamedDecl(D); - Writer.AddTypeRef(D->getType(), Record); -} - -void PCHDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { - VisitValueDecl(D); - Record.push_back(D->getInitExpr()? 1 : 0); - if (D->getInitExpr()) - Writer.AddStmt(D->getInitExpr()); - Writer.AddAPSInt(D->getInitVal(), Record); - Code = pch::DECL_ENUM_CONSTANT; -} - -void PCHDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { - VisitValueDecl(D); - Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); - // FIXME: write optional qualifier and its range. -} - -void PCHDeclWriter::VisitFunctionDecl(FunctionDecl *D) { - VisitDeclaratorDecl(D); - - Record.push_back(D->getIdentifierNamespace()); - Record.push_back(D->getTemplatedKind()); - switch (D->getTemplatedKind()) { - default: assert(false && "Unhandled TemplatedKind!"); - break; - case FunctionDecl::TK_NonTemplate: - break; - case FunctionDecl::TK_FunctionTemplate: - Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); - break; - case FunctionDecl::TK_MemberSpecialization: { - MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); - Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); - Record.push_back(MemberInfo->getTemplateSpecializationKind()); - Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); - break; - } - case FunctionDecl::TK_FunctionTemplateSpecialization: { - FunctionTemplateSpecializationInfo * - FTSInfo = D->getTemplateSpecializationInfo(); - // We want it canonical to guarantee that it has a Common*. - Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); - Record.push_back(FTSInfo->getTemplateSpecializationKind()); - - // Template arguments. - Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); - - // Template args as written. - Record.push_back(FTSInfo->TemplateArgumentsAsWritten != 0); - if (FTSInfo->TemplateArgumentsAsWritten) { - Record.push_back(FTSInfo->TemplateArgumentsAsWritten->size()); - for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->size(); i!=e; ++i) - Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], - Record); - Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getLAngleLoc(), - Record); - Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getRAngleLoc(), - Record); - } - - Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); - 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) - Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); - - // Templates args. - Record.push_back(DFTSInfo->getNumTemplateArgs()); - for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) - Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); - Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); - Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); - break; - } - } - - // FunctionDecl's body is handled last at PCHWriterDecl::Visit, - // after everything else is written. - - Writer.AddDeclRef(D->getPreviousDeclaration(), Record); - Record.push_back(D->getStorageClass()); // FIXME: stable encoding - Record.push_back(D->getStorageClassAsWritten()); - Record.push_back(D->isInlineSpecified()); - Record.push_back(D->isVirtualAsWritten()); - Record.push_back(D->isPure()); - Record.push_back(D->hasInheritedPrototype()); - Record.push_back(D->hasWrittenPrototype()); - Record.push_back(D->isDeleted()); - Record.push_back(D->isTrivial()); - Record.push_back(D->isCopyAssignment()); - Record.push_back(D->hasImplicitReturnZero()); - Writer.AddSourceLocation(D->getLocEnd(), Record); - - Record.push_back(D->param_size()); - for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); - P != PEnd; ++P) - Writer.AddDeclRef(*P, Record); - Code = pch::DECL_FUNCTION; -} - -void PCHDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { - VisitNamedDecl(D); - // FIXME: convert to LazyStmtPtr? - // Unlike C/C++, method bodies will never be in header files. - Record.push_back(D->getBody() != 0); - if (D->getBody() != 0) { - Writer.AddStmt(D->getBody()); - Writer.AddDeclRef(D->getSelfDecl(), Record); - Writer.AddDeclRef(D->getCmdDecl(), Record); - } - Record.push_back(D->isInstanceMethod()); - Record.push_back(D->isVariadic()); - Record.push_back(D->isSynthesized()); - // FIXME: stable encoding for @required/@optional - Record.push_back(D->getImplementationControl()); - // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway - Record.push_back(D->getObjCDeclQualifier()); - Record.push_back(D->getNumSelectorArgs()); - Writer.AddTypeRef(D->getResultType(), Record); - Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record); - Writer.AddSourceLocation(D->getLocEnd(), Record); - Record.push_back(D->param_size()); - for (ObjCMethodDecl::param_iterator P = D->param_begin(), - PEnd = D->param_end(); P != PEnd; ++P) - Writer.AddDeclRef(*P, Record); - Code = pch::DECL_OBJC_METHOD; -} - -void PCHDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { - VisitNamedDecl(D); - Writer.AddSourceRange(D->getAtEndRange(), Record); - // Abstract class (no need to define a stable pch::DECL code). -} - -void PCHDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { - VisitObjCContainerDecl(D); - Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); - Writer.AddDeclRef(D->getSuperClass(), Record); - Record.push_back(D->protocol_size()); - for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), - PEnd = D->protocol_end(); - P != PEnd; ++P) - Writer.AddDeclRef(*P, Record); - for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), - PLEnd = D->protocol_loc_end(); - PL != PLEnd; ++PL) - Writer.AddSourceLocation(*PL, Record); - Record.push_back(D->ivar_size()); - for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), - IEnd = D->ivar_end(); I != IEnd; ++I) - Writer.AddDeclRef(*I, Record); - Writer.AddDeclRef(D->getCategoryList(), Record); - Record.push_back(D->isForwardDecl()); - Record.push_back(D->isImplicitInterfaceDecl()); - Writer.AddSourceLocation(D->getClassLoc(), Record); - Writer.AddSourceLocation(D->getSuperClassLoc(), Record); - Writer.AddSourceLocation(D->getLocEnd(), Record); - Code = pch::DECL_OBJC_INTERFACE; -} - -void PCHDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { - VisitFieldDecl(D); - // FIXME: stable encoding for @public/@private/@protected/@package - Record.push_back(D->getAccessControl()); - Code = pch::DECL_OBJC_IVAR; -} - -void PCHDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { - VisitObjCContainerDecl(D); - Record.push_back(D->isForwardDecl()); - Writer.AddSourceLocation(D->getLocEnd(), Record); - Record.push_back(D->protocol_size()); - for (ObjCProtocolDecl::protocol_iterator - I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) - Writer.AddDeclRef(*I, Record); - for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), - PLEnd = D->protocol_loc_end(); - PL != PLEnd; ++PL) - Writer.AddSourceLocation(*PL, Record); - Code = pch::DECL_OBJC_PROTOCOL; -} - -void PCHDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { - VisitFieldDecl(D); - Code = pch::DECL_OBJC_AT_DEFS_FIELD; -} - -void PCHDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) { - VisitDecl(D); - Record.push_back(D->size()); - for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) - Writer.AddDeclRef(I->getInterface(), Record); - for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) - Writer.AddSourceLocation(I->getLocation(), Record); - Code = pch::DECL_OBJC_CLASS; -} - -void PCHDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { - VisitDecl(D); - Record.push_back(D->protocol_size()); - for (ObjCForwardProtocolDecl::protocol_iterator - I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) - Writer.AddDeclRef(*I, Record); - for (ObjCForwardProtocolDecl::protocol_loc_iterator - PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); - PL != PLEnd; ++PL) - Writer.AddSourceLocation(*PL, Record); - Code = pch::DECL_OBJC_FORWARD_PROTOCOL; -} - -void PCHDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { - VisitObjCContainerDecl(D); - Writer.AddDeclRef(D->getClassInterface(), Record); - Record.push_back(D->protocol_size()); - for (ObjCCategoryDecl::protocol_iterator - I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) - Writer.AddDeclRef(*I, Record); - for (ObjCCategoryDecl::protocol_loc_iterator - PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); - PL != PLEnd; ++PL) - Writer.AddSourceLocation(*PL, Record); - Writer.AddDeclRef(D->getNextClassCategory(), Record); - Writer.AddSourceLocation(D->getAtLoc(), Record); - Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); - Code = pch::DECL_OBJC_CATEGORY; -} - -void PCHDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { - VisitNamedDecl(D); - Writer.AddDeclRef(D->getClassInterface(), Record); - Code = pch::DECL_OBJC_COMPATIBLE_ALIAS; -} - -void PCHDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { - VisitNamedDecl(D); - Writer.AddSourceLocation(D->getAtLoc(), Record); - Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); - // FIXME: stable encoding - Record.push_back((unsigned)D->getPropertyAttributes()); - Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); - // FIXME: stable encoding - Record.push_back((unsigned)D->getPropertyImplementation()); - Writer.AddDeclarationName(D->getGetterName(), Record); - Writer.AddDeclarationName(D->getSetterName(), Record); - Writer.AddDeclRef(D->getGetterMethodDecl(), Record); - Writer.AddDeclRef(D->getSetterMethodDecl(), Record); - Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); - Code = pch::DECL_OBJC_PROPERTY; -} - -void PCHDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { - VisitObjCContainerDecl(D); - Writer.AddDeclRef(D->getClassInterface(), Record); - // Abstract class (no need to define a stable pch::DECL code). -} - -void PCHDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { - VisitObjCImplDecl(D); - Writer.AddIdentifierRef(D->getIdentifier(), Record); - Code = pch::DECL_OBJC_CATEGORY_IMPL; -} - -void PCHDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { - VisitObjCImplDecl(D); - Writer.AddDeclRef(D->getSuperClass(), Record); - // FIXME add writing of IvarInitializers and NumIvarInitializers. - Code = pch::DECL_OBJC_IMPLEMENTATION; -} - -void PCHDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { - VisitDecl(D); - Writer.AddSourceLocation(D->getLocStart(), Record); - Writer.AddDeclRef(D->getPropertyDecl(), Record); - Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); - // FIXME. write GetterCXXConstructor and SetterCXXAssignment. - Code = pch::DECL_OBJC_PROPERTY_IMPL; -} - -void PCHDeclWriter::VisitFieldDecl(FieldDecl *D) { - VisitDeclaratorDecl(D); - Record.push_back(D->isMutable()); - Record.push_back(D->getBitWidth()? 1 : 0); - if (D->getBitWidth()) - Writer.AddStmt(D->getBitWidth()); - if (!D->getDeclName()) - Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); - Code = pch::DECL_FIELD; -} - -void PCHDeclWriter::VisitVarDecl(VarDecl *D) { - VisitDeclaratorDecl(D); - Record.push_back(D->getStorageClass()); // FIXME: stable encoding - Record.push_back(D->getStorageClassAsWritten()); - Record.push_back(D->isThreadSpecified()); - Record.push_back(D->hasCXXDirectInitializer()); - Record.push_back(D->isDeclaredInCondition()); - Record.push_back(D->isExceptionVariable()); - Record.push_back(D->isNRVOVariable()); - Writer.AddDeclRef(D->getPreviousDeclaration(), Record); - Record.push_back(D->getInit() ? 1 : 0); - if (D->getInit()) - Writer.AddStmt(D->getInit()); - - MemberSpecializationInfo *SpecInfo - = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0; - Record.push_back(SpecInfo != 0); - if (SpecInfo) { - Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); - Record.push_back(SpecInfo->getTemplateSpecializationKind()); - Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); - } - - Code = pch::DECL_VAR; -} - -void PCHDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { - VisitVarDecl(D); - Code = pch::DECL_IMPLICIT_PARAM; -} - -void PCHDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { - VisitVarDecl(D); - Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding - Record.push_back(D->hasInheritedDefaultArg()); - Record.push_back(D->hasUninstantiatedDefaultArg()); - if (D->hasUninstantiatedDefaultArg()) - Writer.AddStmt(D->getUninstantiatedDefaultArg()); - Code = pch::DECL_PARM_VAR; - - // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here - // we dynamically check for the properties that we optimize for, but don't - // know are true of all PARM_VAR_DECLs. - if (!D->getTypeSourceInfo() && - !D->hasAttrs() && - !D->isImplicit() && - !D->isUsed(false) && - D->getAccess() == AS_none && - D->getPCHLevel() == 0 && - D->getStorageClass() == 0 && - !D->hasCXXDirectInitializer() && // Can params have this ever? - D->getObjCDeclQualifier() == 0 && - !D->hasInheritedDefaultArg() && - D->getInit() == 0 && - !D->hasUninstantiatedDefaultArg()) // No default expr. - AbbrevToUse = Writer.getParmVarDeclAbbrev(); - - // Check things we know are true of *every* PARM_VAR_DECL, which is more than - // just us assuming it. - assert(!D->isInvalidDecl() && "Shouldn't emit invalid decls"); - assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread"); - assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); - assert(!D->isDeclaredInCondition() && "PARM_VAR_DECL can't be in condition"); - assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); - assert(D->getPreviousDeclaration() == 0 && "PARM_VAR_DECL can't be redecl"); - assert(!D->isStaticDataMember() && - "PARM_VAR_DECL can't be static data member"); -} - -void PCHDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { - VisitDecl(D); - Writer.AddStmt(D->getAsmString()); - Code = pch::DECL_FILE_SCOPE_ASM; -} - -void PCHDeclWriter::VisitBlockDecl(BlockDecl *D) { - VisitDecl(D); - Writer.AddStmt(D->getBody()); - Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); - Record.push_back(D->param_size()); - for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); - P != PEnd; ++P) - Writer.AddDeclRef(*P, Record); - Code = pch::DECL_BLOCK; -} - -void PCHDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { - VisitDecl(D); - // FIXME: It might be nice to serialize the brace locations for this - // declaration, which don't seem to be readily available in the AST. - Record.push_back(D->getLanguage()); - Record.push_back(D->hasBraces()); - Code = pch::DECL_LINKAGE_SPEC; -} - -void PCHDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { - VisitNamedDecl(D); - Writer.AddSourceLocation(D->getLBracLoc(), Record); - Writer.AddSourceLocation(D->getRBracLoc(), Record); - Writer.AddDeclRef(D->getNextNamespace(), Record); - - // Only write one reference--original or anonymous - Record.push_back(D->isOriginalNamespace()); - if (D->isOriginalNamespace()) - Writer.AddDeclRef(D->getAnonymousNamespace(), Record); - else - Writer.AddDeclRef(D->getOriginalNamespace(), Record); - Code = pch::DECL_NAMESPACE; -} - -void PCHDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { - VisitNamedDecl(D); - Writer.AddSourceLocation(D->getAliasLoc(), Record); - Writer.AddSourceRange(D->getQualifierRange(), Record); - Writer.AddNestedNameSpecifier(D->getQualifier(), Record); - Writer.AddSourceLocation(D->getTargetNameLoc(), Record); - Writer.AddDeclRef(D->getNamespace(), Record); - Code = pch::DECL_NAMESPACE_ALIAS; -} - -void PCHDeclWriter::VisitUsingDecl(UsingDecl *D) { - VisitNamedDecl(D); - Writer.AddSourceRange(D->getNestedNameRange(), Record); - Writer.AddSourceLocation(D->getUsingLocation(), Record); - Writer.AddNestedNameSpecifier(D->getTargetNestedNameDecl(), Record); - Record.push_back(D->getNumShadowDecls()); - for (UsingDecl::shadow_iterator P = D->shadow_begin(), - PEnd = D->shadow_end(); P != PEnd; ++P) - Writer.AddDeclRef(*P, Record); - Record.push_back(D->isTypeName()); - Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); - Code = pch::DECL_USING; -} - -void PCHDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { - VisitNamedDecl(D); - Writer.AddDeclRef(D->getTargetDecl(), Record); - Writer.AddDeclRef(D->getUsingDecl(), Record); - Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); - Code = pch::DECL_USING_SHADOW; -} - -void PCHDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { - VisitNamedDecl(D); - Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); - Writer.AddSourceRange(D->getQualifierRange(), Record); - Writer.AddNestedNameSpecifier(D->getQualifier(), Record); - Writer.AddSourceLocation(D->getIdentLocation(), Record); - Writer.AddDeclRef(D->getNominatedNamespace(), Record); - Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); - Code = pch::DECL_USING_DIRECTIVE; -} - -void PCHDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { - VisitValueDecl(D); - Writer.AddSourceRange(D->getTargetNestedNameRange(), Record); - Writer.AddSourceLocation(D->getUsingLoc(), Record); - Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record); - Code = pch::DECL_UNRESOLVED_USING_VALUE; -} - -void PCHDeclWriter::VisitUnresolvedUsingTypenameDecl( - UnresolvedUsingTypenameDecl *D) { - VisitTypeDecl(D); - Writer.AddSourceRange(D->getTargetNestedNameRange(), Record); - Writer.AddSourceLocation(D->getUsingLoc(), Record); - Writer.AddSourceLocation(D->getTypenameLoc(), Record); - Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record); - Code = pch::DECL_UNRESOLVED_USING_TYPENAME; -} - -void PCHDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { - // See comments at PCHDeclReader::VisitCXXRecordDecl about why this happens - // before VisitRecordDecl. - enum { Data_NoDefData, Data_Owner, Data_NotOwner }; - bool OwnsDefinitionData = false; - if (D->DefinitionData) { - assert(D->DefinitionData->Definition && - "DefinitionData don't point to a definition decl!"); - OwnsDefinitionData = D->DefinitionData->Definition == D; - if (OwnsDefinitionData) { - Record.push_back(Data_Owner); - } else { - Record.push_back(Data_NotOwner); - Writer.AddDeclRef(D->DefinitionData->Definition, Record); - } - } else - Record.push_back(Data_NoDefData); - - VisitRecordDecl(D); - - if (OwnsDefinitionData) { - assert(D->DefinitionData); - struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData; - - Record.push_back(Data.UserDeclaredConstructor); - Record.push_back(Data.UserDeclaredCopyConstructor); - Record.push_back(Data.UserDeclaredCopyAssignment); - Record.push_back(Data.UserDeclaredDestructor); - Record.push_back(Data.Aggregate); - Record.push_back(Data.PlainOldData); - Record.push_back(Data.Empty); - Record.push_back(Data.Polymorphic); - Record.push_back(Data.Abstract); - Record.push_back(Data.HasTrivialConstructor); - Record.push_back(Data.HasTrivialCopyConstructor); - Record.push_back(Data.HasTrivialCopyAssignment); - Record.push_back(Data.HasTrivialDestructor); - Record.push_back(Data.ComputedVisibleConversions); - Record.push_back(Data.DeclaredDefaultConstructor); - Record.push_back(Data.DeclaredCopyConstructor); - Record.push_back(Data.DeclaredCopyAssignment); - Record.push_back(Data.DeclaredDestructor); - - Record.push_back(D->getNumBases()); - for (CXXRecordDecl::base_class_iterator I = D->bases_begin(), - E = D->bases_end(); I != E; ++I) - Writer.AddCXXBaseSpecifier(*I, Record); - - // FIXME: Make VBases lazily computed when needed to avoid storing them. - Record.push_back(D->getNumVBases()); - for (CXXRecordDecl::base_class_iterator I = D->vbases_begin(), - E = D->vbases_end(); I != E; ++I) - Writer.AddCXXBaseSpecifier(*I, Record); - - Writer.AddUnresolvedSet(Data.Conversions, Record); - Writer.AddUnresolvedSet(Data.VisibleConversions, Record); - // Data.Definition is written at the top. - Writer.AddDeclRef(Data.FirstFriend, Record); - } - - enum { - CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization - }; - if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { - Record.push_back(CXXRecTemplate); - Writer.AddDeclRef(TemplD, Record); - } else if (MemberSpecializationInfo *MSInfo - = D->getMemberSpecializationInfo()) { - Record.push_back(CXXRecMemberSpecialization); - Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); - Record.push_back(MSInfo->getTemplateSpecializationKind()); - Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); - } else { - Record.push_back(CXXRecNotTemplate); - } - - Code = pch::DECL_CXX_RECORD; -} - -void PCHDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { - VisitFunctionDecl(D); - Record.push_back(D->size_overridden_methods()); - for (CXXMethodDecl::method_iterator - I = D->begin_overridden_methods(), E = D->end_overridden_methods(); - I != E; ++I) - Writer.AddDeclRef(*I, Record); - Code = pch::DECL_CXX_METHOD; -} - -void PCHDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { - VisitCXXMethodDecl(D); - - Record.push_back(D->IsExplicitSpecified); - Record.push_back(D->ImplicitlyDefined); - - Record.push_back(D->NumBaseOrMemberInitializers); - for (unsigned i=0; i != D->NumBaseOrMemberInitializers; ++i) { - CXXBaseOrMemberInitializer *Init = D->BaseOrMemberInitializers[i]; - - Record.push_back(Init->isBaseInitializer()); - if (Init->isBaseInitializer()) { - Writer.AddTypeSourceInfo(Init->getBaseClassInfo(), Record); - Record.push_back(Init->isBaseVirtual()); - } else { - Writer.AddDeclRef(Init->getMember(), Record); - } - Writer.AddSourceLocation(Init->getMemberLocation(), Record); - Writer.AddStmt(Init->getInit()); - Writer.AddDeclRef(Init->getAnonUnionMember(), Record); - Writer.AddSourceLocation(Init->getLParenLoc(), Record); - Writer.AddSourceLocation(Init->getRParenLoc(), Record); - Record.push_back(Init->isWritten()); - if (Init->isWritten()) { - Record.push_back(Init->getSourceOrder()); - } else { - Record.push_back(Init->getNumArrayIndices()); - for (unsigned i=0, e=Init->getNumArrayIndices(); i != e; ++i) - Writer.AddDeclRef(Init->getArrayIndex(i), Record); - } - } - - Code = pch::DECL_CXX_CONSTRUCTOR; -} - -void PCHDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { - VisitCXXMethodDecl(D); - - Record.push_back(D->ImplicitlyDefined); - Writer.AddDeclRef(D->OperatorDelete, Record); - - Code = pch::DECL_CXX_DESTRUCTOR; -} - -void PCHDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { - VisitCXXMethodDecl(D); - Record.push_back(D->IsExplicitSpecified); - Code = pch::DECL_CXX_CONVERSION; -} - -void PCHDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { - VisitDecl(D); - Writer.AddSourceLocation(D->getColonLoc(), Record); - Code = pch::DECL_ACCESS_SPEC; -} - -void PCHDeclWriter::VisitFriendDecl(FriendDecl *D) { - VisitDecl(D); - Record.push_back(D->Friend.is<TypeSourceInfo*>()); - if (D->Friend.is<TypeSourceInfo*>()) - Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record); - else - Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record); - Writer.AddDeclRef(D->NextFriend, Record); - Writer.AddSourceLocation(D->FriendLoc, Record); - Code = pch::DECL_FRIEND; -} - -void PCHDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { - assert(false && "cannot write FriendTemplateDecl"); -} - -void PCHDeclWriter::VisitTemplateDecl(TemplateDecl *D) { - VisitNamedDecl(D); - - Writer.AddDeclRef(D->getTemplatedDecl(), Record); - Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); -} - -static bool IsKeptInFoldingSet(ClassTemplateSpecializationDecl *D) { - return D->getTypeForDecl()->getAsCXXRecordDecl() == D; -} - -void PCHDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { - VisitTemplateDecl(D); - - Record.push_back(D->getIdentifierNamespace()); - Writer.AddDeclRef(D->getPreviousDeclaration(), Record); - if (D->getPreviousDeclaration() == 0) { - // This ClassTemplateDecl owns the CommonPtr; write it. - assert(D->isCanonicalDecl()); - - typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy; - CTSDSetTy &CTSDSet = D->getSpecializations(); - Record.push_back(CTSDSet.size()); - for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) { - assert(IsKeptInFoldingSet(&*I)); - Writer.AddDeclRef(&*I, Record); - } - - typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy; - CTPSDSetTy &CTPSDSet = D->getPartialSpecializations(); - Record.push_back(CTPSDSet.size()); - for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) { - assert(IsKeptInFoldingSet(&*I)); - Writer.AddDeclRef(&*I, Record); - } - - // InjectedClassNameType is computed, no need to write it. - - Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); - if (D->getInstantiatedFromMemberTemplate()) - Record.push_back(D->isMemberSpecialization()); - } - Code = pch::DECL_CLASS_TEMPLATE; -} - -void PCHDeclWriter::VisitClassTemplateSpecializationDecl( - ClassTemplateSpecializationDecl *D) { - VisitCXXRecordDecl(D); - - llvm::PointerUnion<ClassTemplateDecl *, - ClassTemplatePartialSpecializationDecl *> InstFrom - = D->getSpecializedTemplateOrPartial(); - if (InstFrom.is<ClassTemplateDecl *>()) { - Writer.AddDeclRef(InstFrom.get<ClassTemplateDecl *>(), Record); - } else { - Writer.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>(), - Record); - Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); - } - - // Explicit info. - Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); - if (D->getTypeAsWritten()) { - Writer.AddSourceLocation(D->getExternLoc(), Record); - Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); - } - - Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); - Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); - Record.push_back(D->getSpecializationKind()); - - bool IsInInFoldingSet = IsKeptInFoldingSet(D); - Record.push_back(IsInInFoldingSet); - if (IsInInFoldingSet) { - // When reading, we'll add it to the folding set of this one. - Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); - } - - Code = pch::DECL_CLASS_TEMPLATE_SPECIALIZATION; -} - -void PCHDeclWriter::VisitClassTemplatePartialSpecializationDecl( - ClassTemplatePartialSpecializationDecl *D) { - VisitClassTemplateSpecializationDecl(D); - - Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); - - Record.push_back(D->getNumTemplateArgsAsWritten()); - for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i) - Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record); - - Record.push_back(D->getSequenceNumber()); - - // These are read/set from/to the first declaration. - if (D->getPreviousDeclaration() == 0) { - Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); - Record.push_back(D->isMemberSpecialization()); - } - - Code = pch::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; -} - -void PCHDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { - VisitTemplateDecl(D); - - Record.push_back(D->getIdentifierNamespace()); - Writer.AddDeclRef(D->getPreviousDeclaration(), Record); - if (D->getPreviousDeclaration() == 0) { - // This FunctionTemplateDecl owns the CommonPtr; write it. - - // Write the function specialization declarations. - Record.push_back(D->getSpecializations().size()); - for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator - I = D->getSpecializations().begin(), - E = D->getSpecializations().end() ; I != E; ++I) - Writer.AddDeclRef(I->Function, Record); - - Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); - if (D->getInstantiatedFromMemberTemplate()) - Record.push_back(D->isMemberSpecialization()); - } - Code = pch::DECL_FUNCTION_TEMPLATE; -} - -void PCHDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { - VisitTypeDecl(D); - - Record.push_back(D->wasDeclaredWithTypename()); - Record.push_back(D->isParameterPack()); - Record.push_back(D->defaultArgumentWasInherited()); - Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); - - Code = pch::DECL_TEMPLATE_TYPE_PARM; -} - -void PCHDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { - VisitVarDecl(D); - // TemplateParmPosition. - Record.push_back(D->getDepth()); - Record.push_back(D->getPosition()); - // Rest of NonTypeTemplateParmDecl. - Record.push_back(D->getDefaultArgument() != 0); - if (D->getDefaultArgument()) { - Writer.AddStmt(D->getDefaultArgument()); - Record.push_back(D->defaultArgumentWasInherited()); - } - Code = pch::DECL_NON_TYPE_TEMPLATE_PARM; -} - -void PCHDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { - VisitTemplateDecl(D); - // TemplateParmPosition. - Record.push_back(D->getDepth()); - Record.push_back(D->getPosition()); - // Rest of TemplateTemplateParmDecl. - Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); - Record.push_back(D->defaultArgumentWasInherited()); - Code = pch::DECL_TEMPLATE_TEMPLATE_PARM; -} - -void PCHDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { - assert(false && "cannot write StaticAssertDecl"); -} - -/// \brief Emit the DeclContext part of a declaration context decl. -/// -/// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL -/// block for this declaration context is stored. May be 0 to indicate -/// that there are no declarations stored within this context. -/// -/// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE -/// block for this declaration context is stored. May be 0 to indicate -/// that there are no declarations visible from this context. Note -/// that this value will not be emitted for non-primary declaration -/// contexts. -void PCHDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, - uint64_t VisibleOffset) { - Record.push_back(LexicalOffset); - Record.push_back(VisibleOffset); -} - - -//===----------------------------------------------------------------------===// -// PCHWriter Implementation -//===----------------------------------------------------------------------===// - -void PCHWriter::WriteDeclsBlockAbbrevs() { - using namespace llvm; - // Abbreviation for DECL_PARM_VAR. - BitCodeAbbrev *Abv = new BitCodeAbbrev(); - Abv->Add(BitCodeAbbrevOp(pch::DECL_PARM_VAR)); - - // Decl - Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext - Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext - Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location - Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) - Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs - Abv->Add(BitCodeAbbrevOp(0)); // isImplicit - Abv->Add(BitCodeAbbrevOp(0)); // isUsed - Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier - Abv->Add(BitCodeAbbrevOp(0)); // PCH level - - // NamedDecl - Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier - Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name - // ValueDecl - Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type - // DeclaratorDecl - Abv->Add(BitCodeAbbrevOp(pch::PREDEF_TYPE_NULL_ID)); // InfoType - // VarDecl - Abv->Add(BitCodeAbbrevOp(0)); // StorageClass - Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten - Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified - Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer - Abv->Add(BitCodeAbbrevOp(0)); // isDeclaredInCondition - Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable - Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable - Abv->Add(BitCodeAbbrevOp(0)); // PrevDecl - Abv->Add(BitCodeAbbrevOp(0)); // HasInit - Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo - // ParmVarDecl - Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier - Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg - Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg - - ParmVarDeclAbbrev = Stream.EmitAbbrev(Abv); -} - -/// isRequiredDecl - Check if this is a "required" Decl, which must be seen by -/// consumers of the AST. -/// -/// Such decls will always be deserialized from the PCH file, so we would like -/// this to be as restrictive as possible. Currently the predicate is driven by -/// code generation requirements, if other clients have a different notion of -/// what is "required" then we may have to consider an alternate scheme where -/// clients can iterate over the top-level decls and get information on them, -/// without necessary deserializing them. We could explicitly require such -/// clients to use a separate API call to "realize" the decl. This should be -/// relatively painless since they would presumably only do it for top-level -/// decls. -// -// FIXME: This predicate is essentially IRgen's predicate to determine whether a -// declaration can be deferred. Merge them somehow. -static bool isRequiredDecl(const Decl *D, ASTContext &Context) { - // File scoped assembly must be seen. - if (isa<FileScopeAsmDecl>(D)) - return true; - - // Otherwise if this isn't a function or a file scoped variable it doesn't - // need to be seen. - if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { - if (!VD->isFileVarDecl()) - return false; - } else if (!isa<FunctionDecl>(D)) - return false; - - // Aliases and used decls must be seen. - if (D->hasAttr<AliasAttr>() || D->hasAttr<UsedAttr>()) - return true; - - if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { - // Forward declarations don't need to be seen. - if (!FD->isThisDeclarationADefinition()) - return false; - - // Constructors and destructors must be seen. - if (FD->hasAttr<ConstructorAttr>() || FD->hasAttr<DestructorAttr>()) - return true; - - // Otherwise, this is required unless it is static. - // - // FIXME: Inlines. - return FD->getStorageClass() != FunctionDecl::Static; - } else { - const VarDecl *VD = cast<VarDecl>(D); - - // In C++, this doesn't need to be seen if it is marked "extern". - if (Context.getLangOptions().CPlusPlus && !VD->getInit() && - (VD->getStorageClass() == VarDecl::Extern || - VD->isExternC())) - return false; - - // In C, this doesn't need to be seen unless it is a definition. - if (!Context.getLangOptions().CPlusPlus && !VD->getInit()) - return false; - - // Otherwise, this is required unless it is static. - return VD->getStorageClass() != VarDecl::Static; - } -} - -void PCHWriter::WriteDecl(ASTContext &Context, Decl *D) { - RecordData Record; - PCHDeclWriter W(*this, Context, Record); - - // 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. These blocks - // are written before the declaration itself so that we can put - // their offsets into the record for the declaration. - uint64_t LexicalOffset = 0; - uint64_t VisibleOffset = 0; - DeclContext *DC = dyn_cast<DeclContext>(D); - if (DC) { - LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); - VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); - } - - // Determine the ID for this declaration - pch::DeclID &ID = DeclIDs[D]; - if (ID == 0) - ID = DeclIDs.size(); - - unsigned Index = ID - 1; - - // Record the offset for this declaration - if (DeclOffsets.size() == Index) - DeclOffsets.push_back(Stream.GetCurrentBitNo()); - else if (DeclOffsets.size() < Index) { - DeclOffsets.resize(Index+1); - DeclOffsets[Index] = Stream.GetCurrentBitNo(); - } - - // Build and emit a record for this declaration - Record.clear(); - W.Code = (pch::DeclCode)0; - W.AbbrevToUse = 0; - W.Visit(D); - if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); - - if (!W.Code) - llvm::report_fatal_error(llvm::StringRef("unexpected declaration kind '") + - D->getDeclKindName() + "'"); - Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); - - // If the declaration had any attributes, write them now. - if (D->hasAttrs()) - WriteAttributeRecord(D->getAttrs()); - - // Flush any expressions that were written as part of this declaration. - FlushStmts(); - - // Note "external" declarations so that we can add them to a record in the - // PCH file later. - // - // FIXME: This should be renamed, the predicate is much more complicated. - if (isRequiredDecl(D, Context)) - ExternalDefinitions.push_back(Index + 1); -} |
