зеркало из https://github.com/microsoft/clang-1.git
733 строки
26 KiB
C++
733 строки
26 KiB
C++
//===--- PCHReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the PCHReader::ReadDeclRecord method, which is the
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// entrypoint for loading a decl.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/PCHReader.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/DeclVisitor.h"
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#include "clang/AST/DeclGroup.h"
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#include "clang/AST/Expr.h"
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Declaration deserialization
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//===----------------------------------------------------------------------===//
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namespace {
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class PCHDeclReader : public DeclVisitor<PCHDeclReader, void> {
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PCHReader &Reader;
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const PCHReader::RecordData &Record;
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unsigned &Idx;
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public:
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PCHDeclReader(PCHReader &Reader, const PCHReader::RecordData &Record,
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unsigned &Idx)
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: Reader(Reader), Record(Record), Idx(Idx) { }
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void VisitDecl(Decl *D);
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void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
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void VisitNamedDecl(NamedDecl *ND);
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void VisitTypeDecl(TypeDecl *TD);
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void VisitTypedefDecl(TypedefDecl *TD);
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void VisitTagDecl(TagDecl *TD);
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void VisitEnumDecl(EnumDecl *ED);
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void VisitRecordDecl(RecordDecl *RD);
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void VisitValueDecl(ValueDecl *VD);
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void VisitEnumConstantDecl(EnumConstantDecl *ECD);
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void VisitDeclaratorDecl(DeclaratorDecl *DD);
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void VisitFunctionDecl(FunctionDecl *FD);
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void VisitFieldDecl(FieldDecl *FD);
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void VisitVarDecl(VarDecl *VD);
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void VisitImplicitParamDecl(ImplicitParamDecl *PD);
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void VisitParmVarDecl(ParmVarDecl *PD);
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void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
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void VisitBlockDecl(BlockDecl *BD);
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std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
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void VisitObjCMethodDecl(ObjCMethodDecl *D);
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void VisitObjCContainerDecl(ObjCContainerDecl *D);
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void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
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void VisitObjCIvarDecl(ObjCIvarDecl *D);
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void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
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void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
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void VisitObjCClassDecl(ObjCClassDecl *D);
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void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
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void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
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void VisitObjCImplDecl(ObjCImplDecl *D);
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void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
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void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
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void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
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void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
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void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
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};
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}
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void PCHDeclReader::VisitDecl(Decl *D) {
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D->setDeclContext(cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
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D->setLexicalDeclContext(
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cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
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D->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
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D->setInvalidDecl(Record[Idx++]);
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if (Record[Idx++])
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D->addAttr(Reader.ReadAttributes());
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D->setImplicit(Record[Idx++]);
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D->setUsed(Record[Idx++]);
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D->setAccess((AccessSpecifier)Record[Idx++]);
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D->setPCHLevel(Record[Idx++] + 1);
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}
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void PCHDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
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VisitDecl(TU);
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}
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void PCHDeclReader::VisitNamedDecl(NamedDecl *ND) {
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VisitDecl(ND);
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ND->setDeclName(Reader.ReadDeclarationName(Record, Idx));
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}
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void PCHDeclReader::VisitTypeDecl(TypeDecl *TD) {
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VisitNamedDecl(TD);
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TD->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtr());
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}
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void PCHDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
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// Note that we cannot use VisitTypeDecl here, because we need to
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// set the underlying type of the typedef *before* we try to read
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// the type associated with the TypedefDecl.
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VisitNamedDecl(TD);
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uint64_t TypeData = Record[Idx++];
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TD->setTypeDeclaratorInfo(Reader.GetDeclaratorInfo(Record, Idx));
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TD->setTypeForDecl(Reader.GetType(TypeData).getTypePtr());
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}
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void PCHDeclReader::VisitTagDecl(TagDecl *TD) {
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VisitTypeDecl(TD);
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TD->setPreviousDeclaration(
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cast_or_null<TagDecl>(Reader.GetDecl(Record[Idx++])));
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TD->setTagKind((TagDecl::TagKind)Record[Idx++]);
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TD->setDefinition(Record[Idx++]);
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TD->setTypedefForAnonDecl(
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cast_or_null<TypedefDecl>(Reader.GetDecl(Record[Idx++])));
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TD->setRBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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TD->setTagKeywordLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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}
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void PCHDeclReader::VisitEnumDecl(EnumDecl *ED) {
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VisitTagDecl(ED);
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ED->setIntegerType(Reader.GetType(Record[Idx++]));
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// FIXME: C++ InstantiatedFrom
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}
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void PCHDeclReader::VisitRecordDecl(RecordDecl *RD) {
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VisitTagDecl(RD);
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RD->setHasFlexibleArrayMember(Record[Idx++]);
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RD->setAnonymousStructOrUnion(Record[Idx++]);
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RD->setHasObjectMember(Record[Idx++]);
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}
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void PCHDeclReader::VisitValueDecl(ValueDecl *VD) {
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VisitNamedDecl(VD);
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VD->setType(Reader.GetType(Record[Idx++]));
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}
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void PCHDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
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VisitValueDecl(ECD);
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if (Record[Idx++])
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ECD->setInitExpr(Reader.ReadDeclExpr());
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ECD->setInitVal(Reader.ReadAPSInt(Record, Idx));
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}
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void PCHDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
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VisitValueDecl(DD);
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DeclaratorInfo *DInfo = Reader.GetDeclaratorInfo(Record, Idx);
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if (DInfo)
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DD->setDeclaratorInfo(DInfo);
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}
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void PCHDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
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VisitDeclaratorDecl(FD);
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if (Record[Idx++])
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FD->setLazyBody(Reader.getDeclsCursor().GetCurrentBitNo());
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FD->setPreviousDeclaration(
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cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++])));
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FD->setStorageClass((FunctionDecl::StorageClass)Record[Idx++]);
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FD->setInlineSpecified(Record[Idx++]);
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FD->setVirtualAsWritten(Record[Idx++]);
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FD->setPure(Record[Idx++]);
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FD->setHasInheritedPrototype(Record[Idx++]);
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FD->setHasWrittenPrototype(Record[Idx++]);
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FD->setDeleted(Record[Idx++]);
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FD->setTrivial(Record[Idx++]);
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FD->setCopyAssignment(Record[Idx++]);
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FD->setHasImplicitReturnZero(Record[Idx++]);
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FD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
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// FIXME: C++ TemplateOrInstantiation
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unsigned NumParams = Record[Idx++];
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llvm::SmallVector<ParmVarDecl *, 16> Params;
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Params.reserve(NumParams);
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for (unsigned I = 0; I != NumParams; ++I)
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Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
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FD->setParams(*Reader.getContext(), Params.data(), NumParams);
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}
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void PCHDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
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VisitNamedDecl(MD);
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if (Record[Idx++]) {
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// In practice, this won't be executed (since method definitions
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// don't occur in header files).
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MD->setBody(Reader.ReadDeclStmt());
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MD->setSelfDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++])));
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MD->setCmdDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++])));
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}
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MD->setInstanceMethod(Record[Idx++]);
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MD->setVariadic(Record[Idx++]);
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MD->setSynthesized(Record[Idx++]);
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MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]);
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MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
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MD->setResultType(Reader.GetType(Record[Idx++]));
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MD->setEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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unsigned NumParams = Record[Idx++];
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llvm::SmallVector<ParmVarDecl *, 16> Params;
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Params.reserve(NumParams);
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for (unsigned I = 0; I != NumParams; ++I)
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Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
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MD->setMethodParams(*Reader.getContext(), Params.data(), NumParams);
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}
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void PCHDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
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VisitNamedDecl(CD);
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CD->setAtEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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}
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void PCHDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
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VisitObjCContainerDecl(ID);
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ID->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtr());
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ID->setSuperClass(cast_or_null<ObjCInterfaceDecl>
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(Reader.GetDecl(Record[Idx++])));
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unsigned NumProtocols = Record[Idx++];
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llvm::SmallVector<ObjCProtocolDecl *, 16> Protocols;
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Protocols.reserve(NumProtocols);
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for (unsigned I = 0; I != NumProtocols; ++I)
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Protocols.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
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ID->setProtocolList(Protocols.data(), NumProtocols, *Reader.getContext());
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unsigned NumIvars = Record[Idx++];
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llvm::SmallVector<ObjCIvarDecl *, 16> IVars;
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IVars.reserve(NumIvars);
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for (unsigned I = 0; I != NumIvars; ++I)
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IVars.push_back(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
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ID->setIVarList(IVars.data(), NumIvars, *Reader.getContext());
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ID->setCategoryList(
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cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++])));
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ID->setForwardDecl(Record[Idx++]);
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ID->setImplicitInterfaceDecl(Record[Idx++]);
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ID->setClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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ID->setSuperClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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ID->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
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}
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void PCHDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
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VisitFieldDecl(IVD);
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IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record[Idx++]);
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}
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void PCHDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
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VisitObjCContainerDecl(PD);
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PD->setForwardDecl(Record[Idx++]);
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PD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
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unsigned NumProtoRefs = Record[Idx++];
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llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
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ProtoRefs.reserve(NumProtoRefs);
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for (unsigned I = 0; I != NumProtoRefs; ++I)
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ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
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PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, *Reader.getContext());
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}
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void PCHDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
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VisitFieldDecl(FD);
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}
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void PCHDeclReader::VisitObjCClassDecl(ObjCClassDecl *CD) {
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VisitDecl(CD);
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unsigned NumClassRefs = Record[Idx++];
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llvm::SmallVector<ObjCInterfaceDecl *, 16> ClassRefs;
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ClassRefs.reserve(NumClassRefs);
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for (unsigned I = 0; I != NumClassRefs; ++I)
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ClassRefs.push_back(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
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CD->setClassList(*Reader.getContext(), ClassRefs.data(), NumClassRefs);
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}
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void PCHDeclReader::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *FPD) {
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VisitDecl(FPD);
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unsigned NumProtoRefs = Record[Idx++];
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llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
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ProtoRefs.reserve(NumProtoRefs);
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for (unsigned I = 0; I != NumProtoRefs; ++I)
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ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
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FPD->setProtocolList(ProtoRefs.data(), NumProtoRefs, *Reader.getContext());
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}
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void PCHDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
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VisitObjCContainerDecl(CD);
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CD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
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unsigned NumProtoRefs = Record[Idx++];
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llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
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ProtoRefs.reserve(NumProtoRefs);
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for (unsigned I = 0; I != NumProtoRefs; ++I)
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ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
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CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, *Reader.getContext());
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CD->setNextClassCategory(cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++])));
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CD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
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}
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void PCHDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
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VisitNamedDecl(CAD);
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CAD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
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}
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void PCHDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
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VisitNamedDecl(D);
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D->setType(Reader.GetType(Record[Idx++]));
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// FIXME: stable encoding
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D->setPropertyAttributes(
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(ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
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// FIXME: stable encoding
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D->setPropertyImplementation(
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(ObjCPropertyDecl::PropertyControl)Record[Idx++]);
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D->setGetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector());
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D->setSetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector());
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D->setGetterMethodDecl(
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cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
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D->setSetterMethodDecl(
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cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
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D->setPropertyIvarDecl(
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cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
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}
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void PCHDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
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VisitObjCContainerDecl(D);
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D->setClassInterface(
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cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
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}
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void PCHDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
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VisitObjCImplDecl(D);
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D->setIdentifier(Reader.GetIdentifierInfo(Record, Idx));
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}
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void PCHDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
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VisitObjCImplDecl(D);
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D->setSuperClass(
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cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
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}
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void PCHDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
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VisitDecl(D);
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D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
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D->setPropertyDecl(
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cast_or_null<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
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D->setPropertyIvarDecl(
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cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
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}
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void PCHDeclReader::VisitFieldDecl(FieldDecl *FD) {
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VisitDeclaratorDecl(FD);
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FD->setMutable(Record[Idx++]);
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if (Record[Idx++])
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FD->setBitWidth(Reader.ReadDeclExpr());
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}
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void PCHDeclReader::VisitVarDecl(VarDecl *VD) {
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VisitDeclaratorDecl(VD);
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VD->setStorageClass((VarDecl::StorageClass)Record[Idx++]);
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VD->setThreadSpecified(Record[Idx++]);
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VD->setCXXDirectInitializer(Record[Idx++]);
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VD->setDeclaredInCondition(Record[Idx++]);
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VD->setPreviousDeclaration(
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cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
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if (Record[Idx++])
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VD->setInit(*Reader.getContext(), Reader.ReadDeclExpr());
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}
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void PCHDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
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VisitVarDecl(PD);
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}
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void PCHDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
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VisitVarDecl(PD);
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PD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
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}
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void PCHDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
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VisitDecl(AD);
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AD->setAsmString(cast<StringLiteral>(Reader.ReadDeclExpr()));
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}
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void PCHDeclReader::VisitBlockDecl(BlockDecl *BD) {
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VisitDecl(BD);
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BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadDeclStmt()));
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unsigned NumParams = Record[Idx++];
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llvm::SmallVector<ParmVarDecl *, 16> Params;
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Params.reserve(NumParams);
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for (unsigned I = 0; I != NumParams; ++I)
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Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
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BD->setParams(*Reader.getContext(), Params.data(), NumParams);
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}
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std::pair<uint64_t, uint64_t>
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PCHDeclReader::VisitDeclContext(DeclContext *DC) {
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uint64_t LexicalOffset = Record[Idx++];
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uint64_t VisibleOffset = Record[Idx++];
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return std::make_pair(LexicalOffset, VisibleOffset);
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}
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//===----------------------------------------------------------------------===//
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// Attribute Reading
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//===----------------------------------------------------------------------===//
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/// \brief Reads attributes from the current stream position.
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Attr *PCHReader::ReadAttributes() {
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unsigned Code = DeclsCursor.ReadCode();
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assert(Code == llvm::bitc::UNABBREV_RECORD &&
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"Expected unabbreviated record"); (void)Code;
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RecordData Record;
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unsigned Idx = 0;
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unsigned RecCode = DeclsCursor.ReadRecord(Code, Record);
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assert(RecCode == pch::DECL_ATTR && "Expected attribute record");
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(void)RecCode;
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#define SIMPLE_ATTR(Name) \
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case Attr::Name: \
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New = ::new (*Context) Name##Attr(); \
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break
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#define STRING_ATTR(Name) \
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case Attr::Name: \
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New = ::new (*Context) Name##Attr(ReadString(Record, Idx)); \
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break
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#define UNSIGNED_ATTR(Name) \
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case Attr::Name: \
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New = ::new (*Context) Name##Attr(Record[Idx++]); \
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break
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Attr *Attrs = 0;
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while (Idx < Record.size()) {
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Attr *New = 0;
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Attr::Kind Kind = (Attr::Kind)Record[Idx++];
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bool IsInherited = Record[Idx++];
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switch (Kind) {
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STRING_ATTR(Alias);
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UNSIGNED_ATTR(Aligned);
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SIMPLE_ATTR(AlwaysInline);
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SIMPLE_ATTR(AnalyzerNoReturn);
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STRING_ATTR(Annotate);
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STRING_ATTR(AsmLabel);
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case Attr::Blocks:
|
|
New = ::new (*Context) BlocksAttr(
|
|
(BlocksAttr::BlocksAttrTypes)Record[Idx++]);
|
|
break;
|
|
|
|
SIMPLE_ATTR(CDecl);
|
|
|
|
case Attr::Cleanup:
|
|
New = ::new (*Context) CleanupAttr(
|
|
cast<FunctionDecl>(GetDecl(Record[Idx++])));
|
|
break;
|
|
|
|
SIMPLE_ATTR(Const);
|
|
UNSIGNED_ATTR(Constructor);
|
|
SIMPLE_ATTR(DLLExport);
|
|
SIMPLE_ATTR(DLLImport);
|
|
SIMPLE_ATTR(Deprecated);
|
|
UNSIGNED_ATTR(Destructor);
|
|
SIMPLE_ATTR(FastCall);
|
|
|
|
case Attr::Format: {
|
|
std::string Type = ReadString(Record, Idx);
|
|
unsigned FormatIdx = Record[Idx++];
|
|
unsigned FirstArg = Record[Idx++];
|
|
New = ::new (*Context) FormatAttr(Type, FormatIdx, FirstArg);
|
|
break;
|
|
}
|
|
|
|
case Attr::FormatArg: {
|
|
unsigned FormatIdx = Record[Idx++];
|
|
New = ::new (*Context) FormatArgAttr(FormatIdx);
|
|
break;
|
|
}
|
|
|
|
case Attr::Sentinel: {
|
|
int sentinel = Record[Idx++];
|
|
int nullPos = Record[Idx++];
|
|
New = ::new (*Context) SentinelAttr(sentinel, nullPos);
|
|
break;
|
|
}
|
|
|
|
SIMPLE_ATTR(GNUInline);
|
|
|
|
case Attr::IBOutletKind:
|
|
New = ::new (*Context) IBOutletAttr();
|
|
break;
|
|
|
|
SIMPLE_ATTR(Malloc);
|
|
SIMPLE_ATTR(NoDebug);
|
|
SIMPLE_ATTR(NoInline);
|
|
SIMPLE_ATTR(NoReturn);
|
|
SIMPLE_ATTR(NoThrow);
|
|
|
|
case Attr::NonNull: {
|
|
unsigned Size = Record[Idx++];
|
|
llvm::SmallVector<unsigned, 16> ArgNums;
|
|
ArgNums.insert(ArgNums.end(), &Record[Idx], &Record[Idx] + Size);
|
|
Idx += Size;
|
|
New = ::new (*Context) NonNullAttr(ArgNums.data(), Size);
|
|
break;
|
|
}
|
|
|
|
case Attr::ReqdWorkGroupSize: {
|
|
unsigned X = Record[Idx++];
|
|
unsigned Y = Record[Idx++];
|
|
unsigned Z = Record[Idx++];
|
|
New = ::new (*Context) ReqdWorkGroupSizeAttr(X, Y, Z);
|
|
break;
|
|
}
|
|
|
|
SIMPLE_ATTR(ObjCException);
|
|
SIMPLE_ATTR(ObjCNSObject);
|
|
SIMPLE_ATTR(CFReturnsRetained);
|
|
SIMPLE_ATTR(NSReturnsRetained);
|
|
SIMPLE_ATTR(Overloadable);
|
|
SIMPLE_ATTR(Packed);
|
|
UNSIGNED_ATTR(PragmaPack);
|
|
SIMPLE_ATTR(Pure);
|
|
UNSIGNED_ATTR(Regparm);
|
|
STRING_ATTR(Section);
|
|
SIMPLE_ATTR(StdCall);
|
|
SIMPLE_ATTR(TransparentUnion);
|
|
SIMPLE_ATTR(Unavailable);
|
|
SIMPLE_ATTR(Unused);
|
|
SIMPLE_ATTR(Used);
|
|
|
|
case Attr::Visibility:
|
|
New = ::new (*Context) VisibilityAttr(
|
|
(VisibilityAttr::VisibilityTypes)Record[Idx++]);
|
|
break;
|
|
|
|
SIMPLE_ATTR(WarnUnusedResult);
|
|
SIMPLE_ATTR(Weak);
|
|
SIMPLE_ATTR(WeakImport);
|
|
}
|
|
|
|
assert(New && "Unable to decode attribute?");
|
|
New->setInherited(IsInherited);
|
|
New->setNext(Attrs);
|
|
Attrs = New;
|
|
}
|
|
#undef UNSIGNED_ATTR
|
|
#undef STRING_ATTR
|
|
#undef SIMPLE_ATTR
|
|
|
|
// The list of attributes was built backwards. Reverse the list
|
|
// before returning it.
|
|
Attr *PrevAttr = 0, *NextAttr = 0;
|
|
while (Attrs) {
|
|
NextAttr = Attrs->getNext();
|
|
Attrs->setNext(PrevAttr);
|
|
PrevAttr = Attrs;
|
|
Attrs = NextAttr;
|
|
}
|
|
|
|
return PrevAttr;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// PCHReader Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// \brief Note that we have loaded the declaration with the given
|
|
/// Index.
|
|
///
|
|
/// This routine notes that this declaration has already been loaded,
|
|
/// so that future GetDecl calls will return this declaration rather
|
|
/// than trying to load a new declaration.
|
|
inline void PCHReader::LoadedDecl(unsigned Index, Decl *D) {
|
|
assert(!DeclsLoaded[Index] && "Decl loaded twice?");
|
|
DeclsLoaded[Index] = D;
|
|
}
|
|
|
|
|
|
/// \brief Determine whether the consumer will be interested in seeing
|
|
/// this declaration (via HandleTopLevelDecl).
|
|
///
|
|
/// This routine should return true for anything that might affect
|
|
/// code generation, e.g., inline function definitions, Objective-C
|
|
/// declarations with metadata, etc.
|
|
static bool isConsumerInterestedIn(Decl *D) {
|
|
if (isa<FileScopeAsmDecl>(D))
|
|
return true;
|
|
if (VarDecl *Var = dyn_cast<VarDecl>(D))
|
|
return Var->isFileVarDecl() && Var->getInit();
|
|
if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D))
|
|
return Func->isThisDeclarationADefinition();
|
|
return isa<ObjCProtocolDecl>(D);
|
|
}
|
|
|
|
/// \brief Read the declaration at the given offset from the PCH file.
|
|
Decl *PCHReader::ReadDeclRecord(uint64_t Offset, unsigned Index) {
|
|
// Keep track of where we are in the stream, then jump back there
|
|
// after reading this declaration.
|
|
SavedStreamPosition SavedPosition(DeclsCursor);
|
|
|
|
// Note that we are loading a declaration record.
|
|
LoadingTypeOrDecl Loading(*this);
|
|
|
|
DeclsCursor.JumpToBit(Offset);
|
|
RecordData Record;
|
|
unsigned Code = DeclsCursor.ReadCode();
|
|
unsigned Idx = 0;
|
|
PCHDeclReader Reader(*this, Record, Idx);
|
|
|
|
Decl *D = 0;
|
|
switch ((pch::DeclCode)DeclsCursor.ReadRecord(Code, Record)) {
|
|
case pch::DECL_ATTR:
|
|
case pch::DECL_CONTEXT_LEXICAL:
|
|
case pch::DECL_CONTEXT_VISIBLE:
|
|
assert(false && "Record cannot be de-serialized with ReadDeclRecord");
|
|
break;
|
|
case pch::DECL_TRANSLATION_UNIT:
|
|
assert(Index == 0 && "Translation unit must be at index 0");
|
|
D = Context->getTranslationUnitDecl();
|
|
break;
|
|
case pch::DECL_TYPEDEF:
|
|
D = TypedefDecl::Create(*Context, 0, SourceLocation(), 0, 0);
|
|
break;
|
|
case pch::DECL_ENUM:
|
|
D = EnumDecl::Create(*Context, 0, SourceLocation(), 0, SourceLocation(), 0);
|
|
break;
|
|
case pch::DECL_RECORD:
|
|
D = RecordDecl::Create(*Context, TagDecl::TK_struct, 0, SourceLocation(),
|
|
0, SourceLocation(), 0);
|
|
break;
|
|
case pch::DECL_ENUM_CONSTANT:
|
|
D = EnumConstantDecl::Create(*Context, 0, SourceLocation(), 0, QualType(),
|
|
0, llvm::APSInt());
|
|
break;
|
|
case pch::DECL_FUNCTION:
|
|
D = FunctionDecl::Create(*Context, 0, SourceLocation(), DeclarationName(),
|
|
QualType(), 0);
|
|
break;
|
|
case pch::DECL_OBJC_METHOD:
|
|
D = ObjCMethodDecl::Create(*Context, SourceLocation(), SourceLocation(),
|
|
Selector(), QualType(), 0);
|
|
break;
|
|
case pch::DECL_OBJC_INTERFACE:
|
|
D = ObjCInterfaceDecl::Create(*Context, 0, SourceLocation(), 0);
|
|
break;
|
|
case pch::DECL_OBJC_IVAR:
|
|
D = ObjCIvarDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0,
|
|
ObjCIvarDecl::None);
|
|
break;
|
|
case pch::DECL_OBJC_PROTOCOL:
|
|
D = ObjCProtocolDecl::Create(*Context, 0, SourceLocation(), 0);
|
|
break;
|
|
case pch::DECL_OBJC_AT_DEFS_FIELD:
|
|
D = ObjCAtDefsFieldDecl::Create(*Context, 0, SourceLocation(), 0,
|
|
QualType(), 0);
|
|
break;
|
|
case pch::DECL_OBJC_CLASS:
|
|
D = ObjCClassDecl::Create(*Context, 0, SourceLocation());
|
|
break;
|
|
case pch::DECL_OBJC_FORWARD_PROTOCOL:
|
|
D = ObjCForwardProtocolDecl::Create(*Context, 0, SourceLocation());
|
|
break;
|
|
case pch::DECL_OBJC_CATEGORY:
|
|
D = ObjCCategoryDecl::Create(*Context, 0, SourceLocation(), 0);
|
|
break;
|
|
case pch::DECL_OBJC_CATEGORY_IMPL:
|
|
D = ObjCCategoryImplDecl::Create(*Context, 0, SourceLocation(), 0, 0);
|
|
break;
|
|
case pch::DECL_OBJC_IMPLEMENTATION:
|
|
D = ObjCImplementationDecl::Create(*Context, 0, SourceLocation(), 0, 0);
|
|
break;
|
|
case pch::DECL_OBJC_COMPATIBLE_ALIAS:
|
|
D = ObjCCompatibleAliasDecl::Create(*Context, 0, SourceLocation(), 0, 0);
|
|
break;
|
|
case pch::DECL_OBJC_PROPERTY:
|
|
D = ObjCPropertyDecl::Create(*Context, 0, SourceLocation(), 0, QualType());
|
|
break;
|
|
case pch::DECL_OBJC_PROPERTY_IMPL:
|
|
D = ObjCPropertyImplDecl::Create(*Context, 0, SourceLocation(),
|
|
SourceLocation(), 0,
|
|
ObjCPropertyImplDecl::Dynamic, 0);
|
|
break;
|
|
case pch::DECL_FIELD:
|
|
D = FieldDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0, 0,
|
|
false);
|
|
break;
|
|
case pch::DECL_VAR:
|
|
D = VarDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0,
|
|
VarDecl::None);
|
|
break;
|
|
|
|
case pch::DECL_IMPLICIT_PARAM:
|
|
D = ImplicitParamDecl::Create(*Context, 0, SourceLocation(), 0, QualType());
|
|
break;
|
|
|
|
case pch::DECL_PARM_VAR:
|
|
D = ParmVarDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0,
|
|
VarDecl::None, 0);
|
|
break;
|
|
case pch::DECL_FILE_SCOPE_ASM:
|
|
D = FileScopeAsmDecl::Create(*Context, 0, SourceLocation(), 0);
|
|
break;
|
|
case pch::DECL_BLOCK:
|
|
D = BlockDecl::Create(*Context, 0, SourceLocation());
|
|
break;
|
|
}
|
|
|
|
assert(D && "Unknown declaration reading PCH file");
|
|
LoadedDecl(Index, D);
|
|
Reader.Visit(D);
|
|
|
|
// If this declaration is also a declaration context, get the
|
|
// offsets for its tables of lexical and visible declarations.
|
|
if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
|
|
std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
|
|
if (Offsets.first || Offsets.second) {
|
|
DC->setHasExternalLexicalStorage(Offsets.first != 0);
|
|
DC->setHasExternalVisibleStorage(Offsets.second != 0);
|
|
DeclContextOffsets[DC] = Offsets;
|
|
}
|
|
}
|
|
assert(Idx == Record.size());
|
|
|
|
// If we have deserialized a declaration that has a definition the
|
|
// AST consumer might need to know about, notify the consumer
|
|
// about that definition now or queue it for later.
|
|
if (isConsumerInterestedIn(D)) {
|
|
if (Consumer) {
|
|
DeclGroupRef DG(D);
|
|
Consumer->HandleTopLevelDecl(DG);
|
|
} else {
|
|
InterestingDecls.push_back(D);
|
|
}
|
|
}
|
|
|
|
return D;
|
|
}
|