Check in LLVM r95781.
diff --git a/lib/Frontend/PCHReaderDecl.cpp b/lib/Frontend/PCHReaderDecl.cpp
new file mode 100644
index 0000000..56cdfc6
--- /dev/null
+++ b/lib/Frontend/PCHReaderDecl.cpp
@@ -0,0 +1,772 @@
+//===--- PCHReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the PCHReader::ReadDeclRecord method, which is the
+// entrypoint for loading a decl.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/PCHReader.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/DeclVisitor.h"
+#include "clang/AST/DeclGroup.h"
+#include "clang/AST/Expr.h"
+using namespace clang;
+
+
+//===----------------------------------------------------------------------===//
+// Declaration deserialization
+//===----------------------------------------------------------------------===//
+
+namespace {
+ class PCHDeclReader : public DeclVisitor<PCHDeclReader, void> {
+ PCHReader &Reader;
+ const PCHReader::RecordData &Record;
+ unsigned &Idx;
+
+ public:
+ PCHDeclReader(PCHReader &Reader, const PCHReader::RecordData &Record,
+ unsigned &Idx)
+ : Reader(Reader), Record(Record), Idx(Idx) { }
+
+ void VisitDecl(Decl *D);
+ void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
+ void VisitNamedDecl(NamedDecl *ND);
+ void VisitTypeDecl(TypeDecl *TD);
+ void VisitTypedefDecl(TypedefDecl *TD);
+ void VisitTagDecl(TagDecl *TD);
+ void VisitEnumDecl(EnumDecl *ED);
+ void VisitRecordDecl(RecordDecl *RD);
+ void VisitValueDecl(ValueDecl *VD);
+ void VisitEnumConstantDecl(EnumConstantDecl *ECD);
+ void VisitDeclaratorDecl(DeclaratorDecl *DD);
+ void VisitFunctionDecl(FunctionDecl *FD);
+ void VisitFieldDecl(FieldDecl *FD);
+ void VisitVarDecl(VarDecl *VD);
+ void VisitImplicitParamDecl(ImplicitParamDecl *PD);
+ void VisitParmVarDecl(ParmVarDecl *PD);
+ void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
+ void VisitBlockDecl(BlockDecl *BD);
+ std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
+ 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 PCHDeclReader::VisitDecl(Decl *D) {
+ D->setDeclContext(cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
+ D->setLexicalDeclContext(
+ cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
+ D->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ D->setInvalidDecl(Record[Idx++]);
+ if (Record[Idx++])
+ D->addAttr(Reader.ReadAttributes());
+ D->setImplicit(Record[Idx++]);
+ D->setUsed(Record[Idx++]);
+ D->setAccess((AccessSpecifier)Record[Idx++]);
+ D->setPCHLevel(Record[Idx++] + 1);
+}
+
+void PCHDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
+ VisitDecl(TU);
+}
+
+void PCHDeclReader::VisitNamedDecl(NamedDecl *ND) {
+ VisitDecl(ND);
+ ND->setDeclName(Reader.ReadDeclarationName(Record, Idx));
+}
+
+void PCHDeclReader::VisitTypeDecl(TypeDecl *TD) {
+ VisitNamedDecl(TD);
+ TD->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtr());
+}
+
+void PCHDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
+ // Note that we cannot use VisitTypeDecl here, because we need to
+ // set the underlying type of the typedef *before* we try to read
+ // the type associated with the TypedefDecl.
+ VisitNamedDecl(TD);
+ uint64_t TypeData = Record[Idx++];
+ TD->setTypeSourceInfo(Reader.GetTypeSourceInfo(Record, Idx));
+ TD->setTypeForDecl(Reader.GetType(TypeData).getTypePtr());
+}
+
+void PCHDeclReader::VisitTagDecl(TagDecl *TD) {
+ VisitTypeDecl(TD);
+ TD->setPreviousDeclaration(
+ cast_or_null<TagDecl>(Reader.GetDecl(Record[Idx++])));
+ TD->setTagKind((TagDecl::TagKind)Record[Idx++]);
+ TD->setDefinition(Record[Idx++]);
+ TD->setDefinedInDeclarator(Record[Idx++]);
+ TD->setTypedefForAnonDecl(
+ cast_or_null<TypedefDecl>(Reader.GetDecl(Record[Idx++])));
+ TD->setRBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ TD->setTagKeywordLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitEnumDecl(EnumDecl *ED) {
+ VisitTagDecl(ED);
+ ED->setIntegerType(Reader.GetType(Record[Idx++]));
+ ED->setPromotionType(Reader.GetType(Record[Idx++]));
+ // FIXME: C++ InstantiatedFrom
+}
+
+void PCHDeclReader::VisitRecordDecl(RecordDecl *RD) {
+ VisitTagDecl(RD);
+ RD->setHasFlexibleArrayMember(Record[Idx++]);
+ RD->setAnonymousStructOrUnion(Record[Idx++]);
+ RD->setHasObjectMember(Record[Idx++]);
+}
+
+void PCHDeclReader::VisitValueDecl(ValueDecl *VD) {
+ VisitNamedDecl(VD);
+ VD->setType(Reader.GetType(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
+ VisitValueDecl(ECD);
+ if (Record[Idx++])
+ ECD->setInitExpr(Reader.ReadDeclExpr());
+ ECD->setInitVal(Reader.ReadAPSInt(Record, Idx));
+}
+
+void PCHDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
+ VisitValueDecl(DD);
+ TypeSourceInfo *TInfo = Reader.GetTypeSourceInfo(Record, Idx);
+ if (TInfo)
+ DD->setTypeSourceInfo(TInfo);
+}
+
+void PCHDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
+ VisitDeclaratorDecl(FD);
+ if (Record[Idx++])
+ FD->setLazyBody(Reader.getDeclsCursor().GetCurrentBitNo());
+ FD->setPreviousDeclaration(
+ cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++])));
+ FD->setStorageClass((FunctionDecl::StorageClass)Record[Idx++]);
+ FD->setInlineSpecified(Record[Idx++]);
+ FD->setVirtualAsWritten(Record[Idx++]);
+ FD->setPure(Record[Idx++]);
+ FD->setHasInheritedPrototype(Record[Idx++]);
+ FD->setHasWrittenPrototype(Record[Idx++]);
+ FD->setDeleted(Record[Idx++]);
+ FD->setTrivial(Record[Idx++]);
+ FD->setCopyAssignment(Record[Idx++]);
+ FD->setHasImplicitReturnZero(Record[Idx++]);
+ FD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ // FIXME: C++ TemplateOrInstantiation
+ unsigned NumParams = Record[Idx++];
+ llvm::SmallVector<ParmVarDecl *, 16> Params;
+ Params.reserve(NumParams);
+ for (unsigned I = 0; I != NumParams; ++I)
+ Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
+ FD->setParams(*Reader.getContext(), Params.data(), NumParams);
+}
+
+void PCHDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
+ VisitNamedDecl(MD);
+ if (Record[Idx++]) {
+ // In practice, this won't be executed (since method definitions
+ // don't occur in header files).
+ MD->setBody(Reader.ReadDeclStmt());
+ MD->setSelfDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++])));
+ MD->setCmdDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++])));
+ }
+ MD->setInstanceMethod(Record[Idx++]);
+ MD->setVariadic(Record[Idx++]);
+ MD->setSynthesized(Record[Idx++]);
+ MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]);
+ MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
+ MD->setResultType(Reader.GetType(Record[Idx++]));
+ MD->setEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ unsigned NumParams = Record[Idx++];
+ llvm::SmallVector<ParmVarDecl *, 16> Params;
+ Params.reserve(NumParams);
+ for (unsigned I = 0; I != NumParams; ++I)
+ Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
+ MD->setMethodParams(*Reader.getContext(), Params.data(), NumParams);
+}
+
+void PCHDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
+ VisitNamedDecl(CD);
+ SourceLocation A = SourceLocation::getFromRawEncoding(Record[Idx++]);
+ SourceLocation B = SourceLocation::getFromRawEncoding(Record[Idx++]);
+ CD->setAtEndRange(SourceRange(A, B));
+}
+
+void PCHDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
+ VisitObjCContainerDecl(ID);
+ ID->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtr());
+ ID->setSuperClass(cast_or_null<ObjCInterfaceDecl>
+ (Reader.GetDecl(Record[Idx++])));
+ unsigned NumProtocols = Record[Idx++];
+ llvm::SmallVector<ObjCProtocolDecl *, 16> Protocols;
+ Protocols.reserve(NumProtocols);
+ for (unsigned I = 0; I != NumProtocols; ++I)
+ Protocols.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+ llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+ ProtoLocs.reserve(NumProtocols);
+ for (unsigned I = 0; I != NumProtocols; ++I)
+ ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ ID->setProtocolList(Protocols.data(), NumProtocols, ProtoLocs.data(),
+ *Reader.getContext());
+ unsigned NumIvars = Record[Idx++];
+ llvm::SmallVector<ObjCIvarDecl *, 16> IVars;
+ IVars.reserve(NumIvars);
+ for (unsigned I = 0; I != NumIvars; ++I)
+ IVars.push_back(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+ ID->setIVarList(IVars.data(), NumIvars, *Reader.getContext());
+ ID->setCategoryList(
+ cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++])));
+ ID->setForwardDecl(Record[Idx++]);
+ ID->setImplicitInterfaceDecl(Record[Idx++]);
+ ID->setClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ ID->setSuperClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ ID->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
+ VisitFieldDecl(IVD);
+ IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record[Idx++]);
+}
+
+void PCHDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
+ VisitObjCContainerDecl(PD);
+ PD->setForwardDecl(Record[Idx++]);
+ PD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ unsigned NumProtoRefs = Record[Idx++];
+ llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
+ ProtoRefs.reserve(NumProtoRefs);
+ for (unsigned I = 0; I != NumProtoRefs; ++I)
+ ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+ llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+ ProtoLocs.reserve(NumProtoRefs);
+ for (unsigned I = 0; I != NumProtoRefs; ++I)
+ ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
+ *Reader.getContext());
+}
+
+void PCHDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
+ VisitFieldDecl(FD);
+}
+
+void PCHDeclReader::VisitObjCClassDecl(ObjCClassDecl *CD) {
+ VisitDecl(CD);
+ unsigned NumClassRefs = Record[Idx++];
+ llvm::SmallVector<ObjCInterfaceDecl *, 16> ClassRefs;
+ ClassRefs.reserve(NumClassRefs);
+ for (unsigned I = 0; I != NumClassRefs; ++I)
+ ClassRefs.push_back(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+ llvm::SmallVector<SourceLocation, 16> SLocs;
+ SLocs.reserve(NumClassRefs);
+ for (unsigned I = 0; I != NumClassRefs; ++I)
+ SLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ CD->setClassList(*Reader.getContext(), ClassRefs.data(), SLocs.data(),
+ NumClassRefs);
+}
+
+void PCHDeclReader::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *FPD) {
+ VisitDecl(FPD);
+ unsigned NumProtoRefs = Record[Idx++];
+ llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
+ ProtoRefs.reserve(NumProtoRefs);
+ for (unsigned I = 0; I != NumProtoRefs; ++I)
+ ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+ llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+ ProtoLocs.reserve(NumProtoRefs);
+ for (unsigned I = 0; I != NumProtoRefs; ++I)
+ ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ FPD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
+ *Reader.getContext());
+}
+
+void PCHDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
+ VisitObjCContainerDecl(CD);
+ CD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+ unsigned NumProtoRefs = Record[Idx++];
+ llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
+ ProtoRefs.reserve(NumProtoRefs);
+ for (unsigned I = 0; I != NumProtoRefs; ++I)
+ ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+ llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+ ProtoLocs.reserve(NumProtoRefs);
+ for (unsigned I = 0; I != NumProtoRefs; ++I)
+ ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
+ *Reader.getContext());
+ CD->setNextClassCategory(cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++])));
+ CD->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ CD->setCategoryNameLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
+ VisitNamedDecl(CAD);
+ CAD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
+ VisitNamedDecl(D);
+ D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ D->setType(Reader.GetType(Record[Idx++]));
+ // FIXME: stable encoding
+ D->setPropertyAttributes(
+ (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
+ // FIXME: stable encoding
+ D->setPropertyImplementation(
+ (ObjCPropertyDecl::PropertyControl)Record[Idx++]);
+ D->setGetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector());
+ D->setSetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector());
+ D->setGetterMethodDecl(
+ cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+ D->setSetterMethodDecl(
+ cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+ D->setPropertyIvarDecl(
+ cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
+ VisitObjCContainerDecl(D);
+ D->setClassInterface(
+ cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
+ VisitObjCImplDecl(D);
+ D->setIdentifier(Reader.GetIdentifierInfo(Record, Idx));
+}
+
+void PCHDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
+ VisitObjCImplDecl(D);
+ D->setSuperClass(
+ cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+
+void PCHDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
+ VisitDecl(D);
+ D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+ D->setPropertyDecl(
+ cast_or_null<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
+ D->setPropertyIvarDecl(
+ cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitFieldDecl(FieldDecl *FD) {
+ VisitDeclaratorDecl(FD);
+ FD->setMutable(Record[Idx++]);
+ if (Record[Idx++])
+ FD->setBitWidth(Reader.ReadDeclExpr());
+}
+
+void PCHDeclReader::VisitVarDecl(VarDecl *VD) {
+ VisitDeclaratorDecl(VD);
+ VD->setStorageClass((VarDecl::StorageClass)Record[Idx++]);
+ VD->setThreadSpecified(Record[Idx++]);
+ VD->setCXXDirectInitializer(Record[Idx++]);
+ VD->setDeclaredInCondition(Record[Idx++]);
+ VD->setPreviousDeclaration(
+ cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+ if (Record[Idx++])
+ VD->setInit(*Reader.getContext(), Reader.ReadDeclExpr());
+}
+
+void PCHDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
+ VisitVarDecl(PD);
+}
+
+void PCHDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
+ VisitVarDecl(PD);
+ PD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
+}
+
+void PCHDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
+ VisitDecl(AD);
+ AD->setAsmString(cast<StringLiteral>(Reader.ReadDeclExpr()));
+}
+
+void PCHDeclReader::VisitBlockDecl(BlockDecl *BD) {
+ VisitDecl(BD);
+ BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadDeclStmt()));
+ unsigned NumParams = Record[Idx++];
+ llvm::SmallVector<ParmVarDecl *, 16> Params;
+ Params.reserve(NumParams);
+ for (unsigned I = 0; I != NumParams; ++I)
+ Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
+ BD->setParams(*Reader.getContext(), Params.data(), NumParams);
+}
+
+std::pair<uint64_t, uint64_t>
+PCHDeclReader::VisitDeclContext(DeclContext *DC) {
+ uint64_t LexicalOffset = Record[Idx++];
+ uint64_t VisibleOffset = Record[Idx++];
+ return std::make_pair(LexicalOffset, VisibleOffset);
+}
+
+//===----------------------------------------------------------------------===//
+// Attribute Reading
+//===----------------------------------------------------------------------===//
+
+/// \brief Reads attributes from the current stream position.
+Attr *PCHReader::ReadAttributes() {
+ unsigned Code = DeclsCursor.ReadCode();
+ assert(Code == llvm::bitc::UNABBREV_RECORD &&
+ "Expected unabbreviated record"); (void)Code;
+
+ RecordData Record;
+ unsigned Idx = 0;
+ unsigned RecCode = DeclsCursor.ReadRecord(Code, Record);
+ assert(RecCode == pch::DECL_ATTR && "Expected attribute record");
+ (void)RecCode;
+
+#define SIMPLE_ATTR(Name) \
+ case Attr::Name: \
+ New = ::new (*Context) Name##Attr(); \
+ break
+
+#define STRING_ATTR(Name) \
+ case Attr::Name: \
+ New = ::new (*Context) Name##Attr(ReadString(Record, Idx)); \
+ break
+
+#define UNSIGNED_ATTR(Name) \
+ case Attr::Name: \
+ New = ::new (*Context) Name##Attr(Record[Idx++]); \
+ break
+
+ Attr *Attrs = 0;
+ while (Idx < Record.size()) {
+ Attr *New = 0;
+ Attr::Kind Kind = (Attr::Kind)Record[Idx++];
+ bool IsInherited = Record[Idx++];
+
+ switch (Kind) {
+ default:
+ assert(0 && "Unknown attribute!");
+ break;
+ STRING_ATTR(Alias);
+ UNSIGNED_ATTR(Aligned);
+ SIMPLE_ATTR(AlwaysInline);
+ SIMPLE_ATTR(AnalyzerNoReturn);
+ STRING_ATTR(Annotate);
+ STRING_ATTR(AsmLabel);
+ SIMPLE_ATTR(BaseCheck);
+
+ 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);
+ SIMPLE_ATTR(Final);
+
+ 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);
+ SIMPLE_ATTR(Hiding);
+
+ 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(Override);
+ 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(),
+ SourceLocation(), 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, SourceLocation(),
+ 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;
+}