forked from OSchip/llvm-project
590 lines
19 KiB
C++
590 lines
19 KiB
C++
//===--- DeclSerialization.cpp - Serialization of Decls ---------*- 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 defines methods that implement bitcode serialization for Decls.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/Expr.h"
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#include "llvm/Bitcode/Serialize.h"
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#include "llvm/Bitcode/Deserialize.h"
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using llvm::Serializer;
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using llvm::Deserializer;
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using llvm::SerializedPtrID;
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Decl Serialization: Dispatch code to handle specialized decl types.
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//===----------------------------------------------------------------------===//
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void Decl::Emit(Serializer& S) const {
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S.EmitInt(getKind());
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EmitImpl(S);
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if (const DeclContext *DC = dyn_cast<const DeclContext>(this))
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DC->EmitOutRec(S);
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}
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Decl* Decl::Create(Deserializer& D, ASTContext& C) {
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Decl *Dcl;
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Kind k = static_cast<Kind>(D.ReadInt());
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switch (k) {
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default:
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assert (false && "Not implemented.");
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case TranslationUnit:
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Dcl = TranslationUnitDecl::CreateImpl(D, C);
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break;
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case Namespace:
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Dcl = NamespaceDecl::CreateImpl(D, C);
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break;
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case Var:
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Dcl = VarDecl::CreateImpl(D, C);
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break;
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case Enum:
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Dcl = EnumDecl::CreateImpl(D, C);
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break;
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case EnumConstant:
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Dcl = EnumConstantDecl::CreateImpl(D, C);
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break;
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case Field:
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Dcl = FieldDecl::CreateImpl(D, C);
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break;
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case ParmVar:
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Dcl = ParmVarDecl::CreateImpl(D, C);
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break;
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case Function:
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Dcl = FunctionDecl::CreateImpl(D, C);
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break;
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case OverloadedFunction:
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Dcl = OverloadedFunctionDecl::CreateImpl(D, C);
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break;
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case Record:
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Dcl = RecordDecl::CreateImpl(D, C);
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break;
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case Typedef:
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Dcl = TypedefDecl::CreateImpl(D, C);
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break;
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case FileScopeAsm:
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Dcl = FileScopeAsmDecl::CreateImpl(D, C);
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break;
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}
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if (DeclContext *DC = dyn_cast<DeclContext>(Dcl))
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DC->ReadOutRec(D, C);
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return Dcl;
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}
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//===----------------------------------------------------------------------===//
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// Common serialization logic for subclasses of Decl.
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//===----------------------------------------------------------------------===//
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void Decl::EmitInRec(Serializer& S) const {
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S.Emit(getLocation()); // From Decl.
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}
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void Decl::ReadInRec(Deserializer& D, ASTContext& C) {
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Loc = SourceLocation::ReadVal(D); // From Decl.
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}
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//===----------------------------------------------------------------------===//
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// Common serialization logic for subclasses of DeclContext.
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//===----------------------------------------------------------------------===//
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void DeclContext::EmitOutRec(Serializer& S) const {
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S.EmitPtr(DeclChain);
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}
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void DeclContext::ReadOutRec(Deserializer& D, ASTContext& C) {
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D.ReadPtr(DeclChain);
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}
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//===----------------------------------------------------------------------===//
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// Common serialization logic for subclasses of NamedDecl.
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//===----------------------------------------------------------------------===//
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void NamedDecl::EmitInRec(Serializer& S) const {
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Decl::EmitInRec(S);
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S.EmitPtr(getIdentifier()); // From NamedDecl.
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}
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void NamedDecl::ReadInRec(Deserializer& D, ASTContext& C) {
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Decl::ReadInRec(D, C);
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D.ReadPtr(Identifier); // From NamedDecl.
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}
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//===----------------------------------------------------------------------===//
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// Common serialization logic for subclasses of ScopedDecl.
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//===----------------------------------------------------------------------===//
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void ScopedDecl::EmitInRec(Serializer& S) const {
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NamedDecl::EmitInRec(S);
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S.EmitPtr(getNext()); // From ScopedDecl.
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S.EmitPtr(cast_or_null<Decl>(getDeclContext())); // From ScopedDecl.
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}
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void ScopedDecl::ReadInRec(Deserializer& D, ASTContext& C) {
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NamedDecl::ReadInRec(D, C);
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D.ReadPtr(Next); // From ScopedDecl.
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assert(DeclCtx == 0); // Allow back-patching. Observe that we register
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D.ReadPtr(DeclCtx); // the variable of the *object* for back-patching.
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// Its actual value will get filled in later.
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}
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//===------------------------------------------------------------===//
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// NOTE: Not all subclasses of ScopedDecl will use the "OutRec" //
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// methods. This is because owned pointers are usually "batched" //
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// together for efficiency. //
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//===------------------------------------------------------------===//
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void ScopedDecl::EmitOutRec(Serializer& S) const {
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S.EmitOwnedPtr(getNextDeclarator()); // From ScopedDecl.
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}
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void ScopedDecl::ReadOutRec(Deserializer& D, ASTContext& C) {
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NextDeclarator =
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cast_or_null<ScopedDecl>(D.ReadOwnedPtr<Decl>(C)); // From ScopedDecl.
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}
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//===----------------------------------------------------------------------===//
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// Common serialization logic for subclasses of ValueDecl.
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//===----------------------------------------------------------------------===//
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void ValueDecl::EmitInRec(Serializer& S) const {
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ScopedDecl::EmitInRec(S);
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S.Emit(getType()); // From ValueDecl.
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}
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void ValueDecl::ReadInRec(Deserializer& D, ASTContext& C) {
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ScopedDecl::ReadInRec(D, C);
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DeclType = QualType::ReadVal(D); // From ValueDecl.
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}
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//===----------------------------------------------------------------------===//
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// Common serialization logic for subclasses of VarDecl.
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//===----------------------------------------------------------------------===//
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void VarDecl::EmitInRec(Serializer& S) const {
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ValueDecl::EmitInRec(S);
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S.EmitInt(getStorageClass()); // From VarDecl.
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}
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void VarDecl::ReadInRec(Deserializer& D, ASTContext& C) {
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ValueDecl::ReadInRec(D, C);
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SClass = static_cast<StorageClass>(D.ReadInt()); // From VarDecl.
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}
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//===------------------------------------------------------------===//
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// NOTE: VarDecl has its own "OutRec" methods that doesn't use //
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// the one define in ScopedDecl. This is to batch emit the //
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// owned pointers, which results in a smaller output.
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//===------------------------------------------------------------===//
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void VarDecl::EmitOutRec(Serializer& S) const {
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// Emit these last because they will create records of their own.
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S.BatchEmitOwnedPtrs(getInit(), // From VarDecl.
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getNextDeclarator()); // From ScopedDecl.
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}
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void VarDecl::ReadOutRec(Deserializer& D, ASTContext& C) {
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Decl* next_declarator;
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D.BatchReadOwnedPtrs(Init, // From VarDecl.
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next_declarator, // From ScopedDecl.
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C);
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setNextDeclarator(cast_or_null<ScopedDecl>(next_declarator));
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}
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void VarDecl::EmitImpl(Serializer& S) const {
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VarDecl::EmitInRec(S);
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VarDecl::EmitOutRec(S);
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}
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void VarDecl::ReadImpl(Deserializer& D, ASTContext& C) {
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ReadInRec(D, C);
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ReadOutRec(D, C);
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}
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//===----------------------------------------------------------------------===//
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// TranslationUnitDecl Serialization.
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//===----------------------------------------------------------------------===//
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void TranslationUnitDecl::EmitImpl(llvm::Serializer& S) const
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{
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Decl::EmitInRec(S);
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}
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TranslationUnitDecl* TranslationUnitDecl::CreateImpl(Deserializer& D,
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ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<TranslationUnitDecl>();
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TranslationUnitDecl* decl = new (Mem) TranslationUnitDecl();
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decl->Decl::ReadInRec(D, C);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// NamespaceDecl Serialization.
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//===----------------------------------------------------------------------===//
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void NamespaceDecl::EmitImpl(llvm::Serializer& S) const
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{
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ScopedDecl::EmitInRec(S);
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S.Emit(getLBracLoc());
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S.Emit(getRBracLoc());
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ScopedDecl::EmitOutRec(S);
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}
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NamespaceDecl* NamespaceDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<NamespaceDecl>();
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NamespaceDecl* decl = new (Mem) NamespaceDecl(0, SourceLocation(), 0);
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decl->ScopedDecl::ReadInRec(D, C);
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decl->LBracLoc = SourceLocation::ReadVal(D);
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decl->RBracLoc = SourceLocation::ReadVal(D);
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decl->ScopedDecl::ReadOutRec(D, C);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// VarDecl Serialization.
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//===----------------------------------------------------------------------===//
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VarDecl* VarDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<VarDecl>();
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VarDecl* decl =
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new (Mem) VarDecl(Var, 0, SourceLocation(), NULL, QualType(), None, NULL);
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decl->VarDecl::ReadImpl(D, C);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// ParmVarDecl Serialization.
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//===----------------------------------------------------------------------===//
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void ParmVarDecl::EmitImpl(llvm::Serializer& S) const {
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VarDecl::EmitImpl(S);
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S.EmitInt(getObjCDeclQualifier()); // From ParmVarDecl.
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S.EmitOwnedPtr(getDefaultArg()); // From ParmVarDecl.
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}
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ParmVarDecl* ParmVarDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<ParmVarDecl>();
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ParmVarDecl* decl = new (Mem)
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ParmVarDecl(0, SourceLocation(), NULL, QualType(), None, NULL, NULL);
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decl->VarDecl::ReadImpl(D, C);
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decl->objcDeclQualifier = static_cast<ObjCDeclQualifier>(D.ReadInt());
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decl->DefaultArg = D.ReadOwnedPtr<Expr>(C);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// EnumDecl Serialization.
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//===----------------------------------------------------------------------===//
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void EnumDecl::EmitImpl(Serializer& S) const {
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ScopedDecl::EmitInRec(S);
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S.EmitBool(isDefinition());
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S.Emit(IntegerType);
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S.BatchEmitOwnedPtrs(getEnumConstantList(),getNextDeclarator());
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}
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EnumDecl* EnumDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<EnumDecl>();
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EnumDecl* decl = new (Mem) EnumDecl(0, SourceLocation(), NULL, NULL);
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decl->ScopedDecl::ReadInRec(D, C);
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decl->setDefinition(D.ReadBool());
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decl->IntegerType = QualType::ReadVal(D);
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Decl* next_declarator;
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Decl* Elist;
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D.BatchReadOwnedPtrs(Elist, next_declarator, C);
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decl->setDeclChain(cast_or_null<EnumConstantDecl>(Elist));
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decl->setNextDeclarator(cast_or_null<ScopedDecl>(next_declarator));
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// EnumConstantDecl Serialization.
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//===----------------------------------------------------------------------===//
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void EnumConstantDecl::EmitImpl(Serializer& S) const {
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S.Emit(Val);
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ValueDecl::EmitInRec(S);
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S.BatchEmitOwnedPtrs(getNextDeclarator(),Init);
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}
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EnumConstantDecl* EnumConstantDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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llvm::APSInt val(1);
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D.Read(val);
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void *Mem = C.getAllocator().Allocate<EnumConstantDecl>();
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EnumConstantDecl* decl = new (Mem)
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EnumConstantDecl(0, SourceLocation(), NULL, QualType(), NULL, val, NULL);
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decl->ValueDecl::ReadInRec(D, C);
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Decl* next_declarator;
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D.BatchReadOwnedPtrs(next_declarator, decl->Init, C);
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decl->setNextDeclarator(cast_or_null<ScopedDecl>(next_declarator));
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// FieldDecl Serialization.
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//===----------------------------------------------------------------------===//
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void FieldDecl::EmitImpl(Serializer& S) const {
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S.Emit(getType());
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NamedDecl::EmitInRec(S);
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S.EmitOwnedPtr(BitWidth);
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}
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FieldDecl* FieldDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<FieldDecl>();
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FieldDecl* decl = new (Mem) FieldDecl(SourceLocation(), NULL, QualType(), 0);
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decl->DeclType.ReadBackpatch(D);
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decl->ReadInRec(D, C);
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decl->BitWidth = D.ReadOwnedPtr<Expr>(C);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// FunctionDecl Serialization.
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//===----------------------------------------------------------------------===//
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void FunctionDecl::EmitImpl(Serializer& S) const {
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S.EmitInt(SClass); // From FunctionDecl.
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S.EmitBool(IsInline); // From FunctionDecl.
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ValueDecl::EmitInRec(S);
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S.EmitPtr(PreviousDeclaration);
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// NOTE: We do not need to serialize out the number of parameters, because
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// that is encoded in the type (accessed via getNumParams()).
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if (ParamInfo != NULL) {
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S.EmitBool(true);
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S.BatchEmitOwnedPtrs(getNumParams(),&ParamInfo[0], Body,
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getNextDeclarator());
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}
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else {
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S.EmitBool(false);
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S.BatchEmitOwnedPtrs(Body,getNextDeclarator());
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}
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}
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FunctionDecl* FunctionDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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StorageClass SClass = static_cast<StorageClass>(D.ReadInt());
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bool IsInline = D.ReadBool();
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void *Mem = C.getAllocator().Allocate<FunctionDecl>();
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FunctionDecl* decl = new (Mem)
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FunctionDecl(Function, 0, SourceLocation(), NULL,
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QualType(), SClass, IsInline, 0);
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decl->ValueDecl::ReadInRec(D, C);
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D.ReadPtr(decl->PreviousDeclaration);
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Decl* next_declarator;
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bool hasParamDecls = D.ReadBool();
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decl->ParamInfo = hasParamDecls
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? new ParmVarDecl*[decl->getNumParams()]
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: NULL;
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if (hasParamDecls)
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D.BatchReadOwnedPtrs(decl->getNumParams(),
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reinterpret_cast<Decl**>(&decl->ParamInfo[0]),
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decl->Body, next_declarator, C);
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else
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D.BatchReadOwnedPtrs(decl->Body, next_declarator, C);
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decl->setNextDeclarator(cast_or_null<ScopedDecl>(next_declarator));
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return decl;
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}
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void BlockDecl::EmitImpl(Serializer& S) const {
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// FIXME: what about arguments?
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S.Emit(getCaretLocation());
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S.EmitOwnedPtr(Body);
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}
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BlockDecl* BlockDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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QualType Q = QualType::ReadVal(D);
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SourceLocation L = SourceLocation::ReadVal(D);
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/*CompoundStmt* BodyStmt = cast<CompoundStmt>(*/D.ReadOwnedPtr<Stmt>(C)/*)*/;
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assert(0 && "Cannot deserialize BlockBlockExpr yet");
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// FIXME: need to handle parameters.
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//return new BlockBlockExpr(L, Q, BodyStmt);
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return 0;
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}
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//===----------------------------------------------------------------------===//
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// OverloadedFunctionDecl Serialization.
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//===----------------------------------------------------------------------===//
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void OverloadedFunctionDecl::EmitImpl(Serializer& S) const {
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NamedDecl::EmitInRec(S);
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S.EmitInt(getNumFunctions());
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for (unsigned func = 0; func < getNumFunctions(); ++func)
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S.EmitPtr(Functions[func]);
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}
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OverloadedFunctionDecl *
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OverloadedFunctionDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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void *Mem = C.getAllocator().Allocate<OverloadedFunctionDecl>();
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OverloadedFunctionDecl* decl = new (Mem)
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OverloadedFunctionDecl(0, NULL);
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decl->NamedDecl::ReadInRec(D, C);
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unsigned numFunctions = D.ReadInt();
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decl->Functions.reserve(numFunctions);
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for (unsigned func = 0; func < numFunctions; ++func)
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D.ReadPtr(decl->Functions[func]);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// RecordDecl Serialization.
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//===----------------------------------------------------------------------===//
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void RecordDecl::EmitImpl(Serializer& S) const {
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S.EmitInt(getTagKind());
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ScopedDecl::EmitInRec(S);
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S.EmitBool(isDefinition());
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S.EmitBool(hasFlexibleArrayMember());
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S.EmitSInt(getNumMembers());
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if (getNumMembers() > 0) {
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assert (Members);
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S.BatchEmitOwnedPtrs((unsigned) getNumMembers(), (Decl**) &Members[0]);
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}
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else
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ScopedDecl::EmitOutRec(S);
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}
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RecordDecl* RecordDecl::CreateImpl(Deserializer& D, ASTContext& C) {
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TagKind TK = TagKind(D.ReadInt());
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void *Mem = C.getAllocator().Allocate<RecordDecl>();
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RecordDecl* decl = new (Mem) RecordDecl(Record, TK, 0, SourceLocation(), NULL);
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decl->ScopedDecl::ReadInRec(D, C);
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decl->setDefinition(D.ReadBool());
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decl->setHasFlexibleArrayMember(D.ReadBool());
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decl->NumMembers = D.ReadSInt();
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if (decl->getNumMembers() > 0) {
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decl->Members = new FieldDecl*[(unsigned) decl->getNumMembers()];
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D.BatchReadOwnedPtrs((unsigned) decl->getNumMembers(),
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(Decl**) &decl->Members[0], C);
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}
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else
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decl->ScopedDecl::ReadOutRec(D, C);
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return decl;
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}
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//===----------------------------------------------------------------------===//
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// TypedefDecl Serialization.
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//===----------------------------------------------------------------------===//
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void TypedefDecl::EmitImpl(Serializer& S) const {
|
|
S.Emit(UnderlyingType);
|
|
ScopedDecl::EmitInRec(S);
|
|
ScopedDecl::EmitOutRec(S);
|
|
}
|
|
|
|
TypedefDecl* TypedefDecl::CreateImpl(Deserializer& D, ASTContext& C) {
|
|
QualType T = QualType::ReadVal(D);
|
|
|
|
void *Mem = C.getAllocator().Allocate<TypedefDecl>();
|
|
TypedefDecl* decl = new (Mem) TypedefDecl(0, SourceLocation(), NULL, T, NULL);
|
|
|
|
decl->ScopedDecl::ReadInRec(D, C);
|
|
decl->ScopedDecl::ReadOutRec(D, C);
|
|
|
|
return decl;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// LinkageSpec Serialization.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void LinkageSpecDecl::EmitInRec(Serializer& S) const {
|
|
Decl::EmitInRec(S);
|
|
S.EmitInt(getLanguage());
|
|
S.EmitPtr(D);
|
|
}
|
|
|
|
void LinkageSpecDecl::ReadInRec(Deserializer& D, ASTContext& C) {
|
|
Decl::ReadInRec(D, C);
|
|
Language = static_cast<LanguageIDs>(D.ReadInt());
|
|
D.ReadPtr(this->D);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// FileScopeAsm Serialization.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void FileScopeAsmDecl::EmitImpl(llvm::Serializer& S) const
|
|
{
|
|
Decl::EmitInRec(S);
|
|
S.EmitOwnedPtr(AsmString);
|
|
}
|
|
|
|
FileScopeAsmDecl* FileScopeAsmDecl::CreateImpl(Deserializer& D, ASTContext& C) {
|
|
void *Mem = C.getAllocator().Allocate<FileScopeAsmDecl>();
|
|
FileScopeAsmDecl* decl = new (Mem) FileScopeAsmDecl(SourceLocation(), 0);
|
|
|
|
decl->Decl::ReadInRec(D, C);
|
|
decl->AsmString = cast<StringLiteral>(D.ReadOwnedPtr<Expr>(C));
|
|
// D.ReadOwnedPtr(D.ReadOwnedPtr<StringLiteral>())<#T * * Ptr#>, <#bool AutoRegister#>)(decl->AsmString);
|
|
|
|
return decl;
|
|
}
|