| //===--- ASTImporter.cpp - Importing ASTs from other Contexts ---*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the ASTImporter class which imports AST nodes from one |
| // context into another context. |
| // |
| //===----------------------------------------------------------------------===// |
| #include "clang/AST/ASTImporter.h" |
| |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/ASTDiagnostic.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/AST/DeclVisitor.h" |
| #include "clang/AST/TypeVisitor.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| |
| using namespace clang; |
| |
| namespace { |
| class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, QualType>, |
| public DeclVisitor<ASTNodeImporter, Decl *> { |
| ASTImporter &Importer; |
| |
| public: |
| explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) { } |
| |
| using TypeVisitor<ASTNodeImporter, QualType>::Visit; |
| using DeclVisitor<ASTNodeImporter, Decl *>::Visit; |
| |
| // Importing types |
| QualType VisitType(Type *T); |
| QualType VisitBuiltinType(BuiltinType *T); |
| QualType VisitComplexType(ComplexType *T); |
| QualType VisitPointerType(PointerType *T); |
| QualType VisitBlockPointerType(BlockPointerType *T); |
| QualType VisitLValueReferenceType(LValueReferenceType *T); |
| QualType VisitRValueReferenceType(RValueReferenceType *T); |
| QualType VisitMemberPointerType(MemberPointerType *T); |
| QualType VisitConstantArrayType(ConstantArrayType *T); |
| QualType VisitIncompleteArrayType(IncompleteArrayType *T); |
| QualType VisitVariableArrayType(VariableArrayType *T); |
| // FIXME: DependentSizedArrayType |
| // FIXME: DependentSizedExtVectorType |
| QualType VisitVectorType(VectorType *T); |
| QualType VisitExtVectorType(ExtVectorType *T); |
| QualType VisitFunctionNoProtoType(FunctionNoProtoType *T); |
| QualType VisitFunctionProtoType(FunctionProtoType *T); |
| // FIXME: UnresolvedUsingType |
| QualType VisitTypedefType(TypedefType *T); |
| QualType VisitTypeOfExprType(TypeOfExprType *T); |
| // FIXME: DependentTypeOfExprType |
| QualType VisitTypeOfType(TypeOfType *T); |
| QualType VisitDecltypeType(DecltypeType *T); |
| // FIXME: DependentDecltypeType |
| QualType VisitRecordType(RecordType *T); |
| QualType VisitEnumType(EnumType *T); |
| QualType VisitElaboratedType(ElaboratedType *T); |
| // FIXME: TemplateTypeParmType |
| // FIXME: SubstTemplateTypeParmType |
| // FIXME: TemplateSpecializationType |
| QualType VisitQualifiedNameType(QualifiedNameType *T); |
| // FIXME: TypenameType |
| QualType VisitObjCInterfaceType(ObjCInterfaceType *T); |
| QualType VisitObjCObjectPointerType(ObjCObjectPointerType *T); |
| |
| // Importing declarations |
| Decl *VisitDecl(Decl *D); |
| Decl *VisitVarDecl(VarDecl *D); |
| }; |
| } |
| |
| //---------------------------------------------------------------------------- |
| // Import Types |
| //---------------------------------------------------------------------------- |
| |
| QualType ASTNodeImporter::VisitType(Type *T) { |
| Importer.FromDiag(SourceLocation(), diag::err_unsupported_ast_node) |
| << T->getTypeClassName(); |
| return QualType(); |
| } |
| |
| QualType ASTNodeImporter::VisitBuiltinType(BuiltinType *T) { |
| switch (T->getKind()) { |
| case BuiltinType::Void: return Importer.getToContext().VoidTy; |
| case BuiltinType::Bool: return Importer.getToContext().BoolTy; |
| |
| case BuiltinType::Char_U: |
| // The context we're importing from has an unsigned 'char'. If we're |
| // importing into a context with a signed 'char', translate to |
| // 'unsigned char' instead. |
| if (Importer.getToContext().getLangOptions().CharIsSigned) |
| return Importer.getToContext().UnsignedCharTy; |
| |
| return Importer.getToContext().CharTy; |
| |
| case BuiltinType::UChar: return Importer.getToContext().UnsignedCharTy; |
| |
| case BuiltinType::Char16: |
| // FIXME: Make sure that the "to" context supports C++! |
| return Importer.getToContext().Char16Ty; |
| |
| case BuiltinType::Char32: |
| // FIXME: Make sure that the "to" context supports C++! |
| return Importer.getToContext().Char32Ty; |
| |
| case BuiltinType::UShort: return Importer.getToContext().UnsignedShortTy; |
| case BuiltinType::UInt: return Importer.getToContext().UnsignedIntTy; |
| case BuiltinType::ULong: return Importer.getToContext().UnsignedLongTy; |
| case BuiltinType::ULongLong: |
| return Importer.getToContext().UnsignedLongLongTy; |
| case BuiltinType::UInt128: return Importer.getToContext().UnsignedInt128Ty; |
| |
| case BuiltinType::Char_S: |
| // The context we're importing from has an unsigned 'char'. If we're |
| // importing into a context with a signed 'char', translate to |
| // 'unsigned char' instead. |
| if (!Importer.getToContext().getLangOptions().CharIsSigned) |
| return Importer.getToContext().SignedCharTy; |
| |
| return Importer.getToContext().CharTy; |
| |
| case BuiltinType::SChar: return Importer.getToContext().SignedCharTy; |
| case BuiltinType::WChar: |
| // FIXME: If not in C++, shall we translate to the C equivalent of |
| // wchar_t? |
| return Importer.getToContext().WCharTy; |
| |
| case BuiltinType::Short : return Importer.getToContext().ShortTy; |
| case BuiltinType::Int : return Importer.getToContext().IntTy; |
| case BuiltinType::Long : return Importer.getToContext().LongTy; |
| case BuiltinType::LongLong : return Importer.getToContext().LongLongTy; |
| case BuiltinType::Int128 : return Importer.getToContext().Int128Ty; |
| case BuiltinType::Float: return Importer.getToContext().FloatTy; |
| case BuiltinType::Double: return Importer.getToContext().DoubleTy; |
| case BuiltinType::LongDouble: return Importer.getToContext().LongDoubleTy; |
| |
| case BuiltinType::NullPtr: |
| // FIXME: Make sure that the "to" context supports C++0x! |
| return Importer.getToContext().NullPtrTy; |
| |
| case BuiltinType::Overload: return Importer.getToContext().OverloadTy; |
| case BuiltinType::Dependent: return Importer.getToContext().DependentTy; |
| case BuiltinType::UndeducedAuto: |
| // FIXME: Make sure that the "to" context supports C++0x! |
| return Importer.getToContext().UndeducedAutoTy; |
| |
| case BuiltinType::ObjCId: |
| // FIXME: Make sure that the "to" context supports Objective-C! |
| return Importer.getToContext().ObjCBuiltinIdTy; |
| |
| case BuiltinType::ObjCClass: |
| return Importer.getToContext().ObjCBuiltinClassTy; |
| |
| case BuiltinType::ObjCSel: |
| return Importer.getToContext().ObjCBuiltinSelTy; |
| } |
| |
| return QualType(); |
| } |
| |
| QualType ASTNodeImporter::VisitComplexType(ComplexType *T) { |
| QualType ToElementType = Importer.Import(T->getElementType()); |
| if (ToElementType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getComplexType(ToElementType); |
| } |
| |
| QualType ASTNodeImporter::VisitPointerType(PointerType *T) { |
| QualType ToPointeeType = Importer.Import(T->getPointeeType()); |
| if (ToPointeeType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getPointerType(ToPointeeType); |
| } |
| |
| QualType ASTNodeImporter::VisitBlockPointerType(BlockPointerType *T) { |
| // FIXME: Check for blocks support in "to" context. |
| QualType ToPointeeType = Importer.Import(T->getPointeeType()); |
| if (ToPointeeType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getBlockPointerType(ToPointeeType); |
| } |
| |
| QualType ASTNodeImporter::VisitLValueReferenceType(LValueReferenceType *T) { |
| // FIXME: Check for C++ support in "to" context. |
| QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten()); |
| if (ToPointeeType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getLValueReferenceType(ToPointeeType); |
| } |
| |
| QualType ASTNodeImporter::VisitRValueReferenceType(RValueReferenceType *T) { |
| // FIXME: Check for C++0x support in "to" context. |
| QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten()); |
| if (ToPointeeType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getRValueReferenceType(ToPointeeType); |
| } |
| |
| QualType ASTNodeImporter::VisitMemberPointerType(MemberPointerType *T) { |
| // FIXME: Check for C++ support in "to" context. |
| QualType ToPointeeType = Importer.Import(T->getPointeeType()); |
| if (ToPointeeType.isNull()) |
| return QualType(); |
| |
| QualType ClassType = Importer.Import(QualType(T->getClass(), 0)); |
| return Importer.getToContext().getMemberPointerType(ToPointeeType, |
| ClassType.getTypePtr()); |
| } |
| |
| QualType ASTNodeImporter::VisitConstantArrayType(ConstantArrayType *T) { |
| QualType ToElementType = Importer.Import(T->getElementType()); |
| if (ToElementType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getConstantArrayType(ToElementType, |
| T->getSize(), |
| T->getSizeModifier(), |
| T->getIndexTypeCVRQualifiers()); |
| } |
| |
| QualType ASTNodeImporter::VisitIncompleteArrayType(IncompleteArrayType *T) { |
| QualType ToElementType = Importer.Import(T->getElementType()); |
| if (ToElementType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getIncompleteArrayType(ToElementType, |
| T->getSizeModifier(), |
| T->getIndexTypeCVRQualifiers()); |
| } |
| |
| QualType ASTNodeImporter::VisitVariableArrayType(VariableArrayType *T) { |
| QualType ToElementType = Importer.Import(T->getElementType()); |
| if (ToElementType.isNull()) |
| return QualType(); |
| |
| Expr *Size = Importer.Import(T->getSizeExpr()); |
| if (!Size) |
| return QualType(); |
| |
| SourceRange Brackets = Importer.Import(T->getBracketsRange()); |
| return Importer.getToContext().getVariableArrayType(ToElementType, Size, |
| T->getSizeModifier(), |
| T->getIndexTypeCVRQualifiers(), |
| Brackets); |
| } |
| |
| QualType ASTNodeImporter::VisitVectorType(VectorType *T) { |
| QualType ToElementType = Importer.Import(T->getElementType()); |
| if (ToElementType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getVectorType(ToElementType, |
| T->getNumElements(), |
| T->isAltiVec(), |
| T->isPixel()); |
| } |
| |
| QualType ASTNodeImporter::VisitExtVectorType(ExtVectorType *T) { |
| QualType ToElementType = Importer.Import(T->getElementType()); |
| if (ToElementType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getExtVectorType(ToElementType, |
| T->getNumElements()); |
| } |
| |
| QualType ASTNodeImporter::VisitFunctionNoProtoType(FunctionNoProtoType *T) { |
| // FIXME: What happens if we're importing a function without a prototype |
| // into C++? Should we make it variadic? |
| QualType ToResultType = Importer.Import(T->getResultType()); |
| if (ToResultType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getFunctionNoProtoType(ToResultType, |
| T->getNoReturnAttr(), |
| T->getCallConv()); |
| } |
| |
| QualType ASTNodeImporter::VisitFunctionProtoType(FunctionProtoType *T) { |
| QualType ToResultType = Importer.Import(T->getResultType()); |
| if (ToResultType.isNull()) |
| return QualType(); |
| |
| // Import argument types |
| llvm::SmallVector<QualType, 4> ArgTypes; |
| for (FunctionProtoType::arg_type_iterator A = T->arg_type_begin(), |
| AEnd = T->arg_type_end(); |
| A != AEnd; ++A) { |
| QualType ArgType = Importer.Import(*A); |
| if (ArgType.isNull()) |
| return QualType(); |
| ArgTypes.push_back(ArgType); |
| } |
| |
| // Import exception types |
| llvm::SmallVector<QualType, 4> ExceptionTypes; |
| for (FunctionProtoType::exception_iterator E = T->exception_begin(), |
| EEnd = T->exception_end(); |
| E != EEnd; ++E) { |
| QualType ExceptionType = Importer.Import(*E); |
| if (ExceptionType.isNull()) |
| return QualType(); |
| ExceptionTypes.push_back(ExceptionType); |
| } |
| |
| return Importer.getToContext().getFunctionType(ToResultType, ArgTypes.data(), |
| ArgTypes.size(), |
| T->isVariadic(), |
| T->getTypeQuals(), |
| T->hasExceptionSpec(), |
| T->hasAnyExceptionSpec(), |
| ExceptionTypes.size(), |
| ExceptionTypes.data(), |
| T->getNoReturnAttr(), |
| T->getCallConv()); |
| } |
| |
| QualType ASTNodeImporter::VisitTypedefType(TypedefType *T) { |
| TypedefDecl *ToDecl |
| = dyn_cast_or_null<TypedefDecl>(Importer.Import(T->getDecl())); |
| if (!ToDecl) |
| return QualType(); |
| |
| return Importer.getToContext().getTypeDeclType(ToDecl); |
| } |
| |
| QualType ASTNodeImporter::VisitTypeOfExprType(TypeOfExprType *T) { |
| Expr *ToExpr = Importer.Import(T->getUnderlyingExpr()); |
| if (!ToExpr) |
| return QualType(); |
| |
| return Importer.getToContext().getTypeOfExprType(ToExpr); |
| } |
| |
| QualType ASTNodeImporter::VisitTypeOfType(TypeOfType *T) { |
| QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType()); |
| if (ToUnderlyingType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getTypeOfType(ToUnderlyingType); |
| } |
| |
| QualType ASTNodeImporter::VisitDecltypeType(DecltypeType *T) { |
| Expr *ToExpr = Importer.Import(T->getUnderlyingExpr()); |
| if (!ToExpr) |
| return QualType(); |
| |
| return Importer.getToContext().getDecltypeType(ToExpr); |
| } |
| |
| QualType ASTNodeImporter::VisitRecordType(RecordType *T) { |
| RecordDecl *ToDecl |
| = dyn_cast_or_null<RecordDecl>(Importer.Import(T->getDecl())); |
| if (!ToDecl) |
| return QualType(); |
| |
| return Importer.getToContext().getTagDeclType(ToDecl); |
| } |
| |
| QualType ASTNodeImporter::VisitEnumType(EnumType *T) { |
| EnumDecl *ToDecl |
| = dyn_cast_or_null<EnumDecl>(Importer.Import(T->getDecl())); |
| if (!ToDecl) |
| return QualType(); |
| |
| return Importer.getToContext().getTagDeclType(ToDecl); |
| } |
| |
| QualType ASTNodeImporter::VisitElaboratedType(ElaboratedType *T) { |
| QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType()); |
| if (ToUnderlyingType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getElaboratedType(ToUnderlyingType, |
| T->getTagKind()); |
| } |
| |
| QualType ASTNodeImporter::VisitQualifiedNameType(QualifiedNameType *T) { |
| NestedNameSpecifier *ToQualifier = Importer.Import(T->getQualifier()); |
| if (!ToQualifier) |
| return QualType(); |
| |
| QualType ToNamedType = Importer.Import(T->getNamedType()); |
| if (ToNamedType.isNull()) |
| return QualType(); |
| |
| return Importer.getToContext().getQualifiedNameType(ToQualifier, ToNamedType); |
| } |
| |
| QualType ASTNodeImporter::VisitObjCInterfaceType(ObjCInterfaceType *T) { |
| ObjCInterfaceDecl *Class |
| = dyn_cast_or_null<ObjCInterfaceDecl>(Importer.Import(T->getDecl())); |
| if (!Class) |
| return QualType(); |
| |
| llvm::SmallVector<ObjCProtocolDecl *, 4> Protocols; |
| for (ObjCInterfaceType::qual_iterator P = T->qual_begin(), |
| PEnd = T->qual_end(); |
| P != PEnd; ++P) { |
| ObjCProtocolDecl *Protocol |
| = dyn_cast_or_null<ObjCProtocolDecl>(Importer.Import(*P)); |
| if (!Protocol) |
| return QualType(); |
| Protocols.push_back(Protocol); |
| } |
| |
| return Importer.getToContext().getObjCInterfaceType(Class, |
| Protocols.data(), |
| Protocols.size()); |
| } |
| |
| QualType ASTNodeImporter::VisitObjCObjectPointerType(ObjCObjectPointerType *T) { |
| QualType ToPointeeType = Importer.Import(T->getPointeeType()); |
| if (ToPointeeType.isNull()) |
| return QualType(); |
| |
| llvm::SmallVector<ObjCProtocolDecl *, 4> Protocols; |
| for (ObjCObjectPointerType::qual_iterator P = T->qual_begin(), |
| PEnd = T->qual_end(); |
| P != PEnd; ++P) { |
| ObjCProtocolDecl *Protocol |
| = dyn_cast_or_null<ObjCProtocolDecl>(Importer.Import(*P)); |
| if (!Protocol) |
| return QualType(); |
| Protocols.push_back(Protocol); |
| } |
| |
| return Importer.getToContext().getObjCObjectPointerType(ToPointeeType, |
| Protocols.data(), |
| Protocols.size()); |
| } |
| |
| //---------------------------------------------------------------------------- |
| // Import Declarations |
| //---------------------------------------------------------------------------- |
| Decl *ASTNodeImporter::VisitDecl(Decl *D) { |
| Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node) |
| << D->getDeclKindName(); |
| return 0; |
| } |
| |
| Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) { |
| // Import the context of this declaration. |
| DeclContext *DC = Importer.ImportContext(D->getDeclContext()); |
| if (!DC) |
| return 0; |
| |
| DeclContext *LexicalDC = DC; |
| if (D->getDeclContext() != D->getLexicalDeclContext()) { |
| LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); |
| if (!LexicalDC) |
| return 0; |
| } |
| |
| // Import the name of this declaration. |
| DeclarationName Name = Importer.Import(D->getDeclName()); |
| if (D->getDeclName() && !Name) |
| return 0; |
| |
| // Import the type of this declaration. |
| QualType T = Importer.Import(D->getType()); |
| if (T.isNull()) |
| return 0; |
| |
| // Import the location of this declaration. |
| SourceLocation Loc = Importer.Import(D->getLocation()); |
| |
| // Try to find a variable in our own ("to") context with the same name and |
| // in the same context as the variable we're importing. |
| if (D->isFileVarDecl()) { |
| VarDecl *MergeWithVar = 0; |
| llvm::SmallVector<NamedDecl *, 4> ConflictingDecls; |
| unsigned IDNS = Decl::IDNS_Ordinary; |
| for (DeclContext::lookup_result Lookup = DC->lookup(Name); |
| Lookup.first != Lookup.second; |
| ++Lookup.first) { |
| if (!(*Lookup.first)->isInIdentifierNamespace(IDNS)) |
| continue; |
| |
| if (VarDecl *FoundVar = dyn_cast<VarDecl>(*Lookup.first)) { |
| // We have found a variable that we may need to merge with. Check it. |
| if (isExternalLinkage(FoundVar->getLinkage()) && |
| isExternalLinkage(D->getLinkage())) { |
| if (Importer.getToContext().typesAreCompatible(T, |
| FoundVar->getType())) { |
| MergeWithVar = FoundVar; |
| break; |
| } |
| |
| Importer.ToDiag(Loc, diag::err_odr_variable_type_inconsistent) |
| << Name << T << FoundVar->getType(); |
| Importer.ToDiag(FoundVar->getLocation(), diag::note_odr_value_here) |
| << FoundVar->getType(); |
| } |
| } |
| |
| ConflictingDecls.push_back(*Lookup.first); |
| } |
| |
| if (MergeWithVar) { |
| // An equivalent variable with external linkage has been found. Link |
| // the two declarations, then merge them. |
| Importer.getImportedDecls()[D] = MergeWithVar; |
| |
| if (VarDecl *DDef = D->getDefinition()) { |
| if (VarDecl *ExistingDef = MergeWithVar->getDefinition()) { |
| Importer.ToDiag(ExistingDef->getLocation(), |
| diag::err_odr_variable_multiple_def) |
| << Name; |
| Importer.FromDiag(DDef->getLocation(), diag::note_odr_defined_here); |
| } else { |
| Expr *Init = Importer.Import(DDef->getInit()); |
| MergeWithVar->setInit(Importer.getToContext(), Init); |
| } |
| } |
| |
| return MergeWithVar; |
| } |
| |
| if (!ConflictingDecls.empty()) { |
| Name = Importer.HandleNameConflict(Name, DC, IDNS, |
| ConflictingDecls.data(), |
| ConflictingDecls.size()); |
| if (!Name) |
| return 0; |
| } |
| } |
| |
| TypeSourceInfo *TInfo = 0; |
| if (TypeSourceInfo *FromTInfo = D->getTypeSourceInfo()) { |
| TInfo = Importer.Import(FromTInfo); |
| #if 0 |
| // FIXME: Tolerate failures in translation type source |
| // information, at least until it is implemented. |
| if (!TInfo) |
| return 0; |
| #endif |
| } |
| |
| // Create the imported variable. |
| VarDecl *ToVar = VarDecl::Create(Importer.getToContext(), DC, Loc, |
| Name.getAsIdentifierInfo(), T, TInfo, |
| D->getStorageClass()); |
| ToVar->setLexicalDeclContext(LexicalDC); |
| Importer.getImportedDecls()[D] = ToVar; |
| LexicalDC->addDecl(ToVar); |
| |
| // Merge the initializer. |
| // FIXME: Can we really import any initializer? Alternatively, we could force |
| // ourselves to import every declaration of a variable and then only use |
| // getInit() here. |
| ToVar->setInit(Importer.getToContext(), |
| Importer.Import(const_cast<Expr *>(D->getAnyInitializer()))); |
| |
| // FIXME: Other bits to merge? |
| |
| return ToVar; |
| } |
| |
| ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager, |
| Diagnostic &ToDiags, |
| ASTContext &FromContext, FileManager &FromFileManager, |
| Diagnostic &FromDiags) |
| : ToContext(ToContext), FromContext(FromContext), |
| ToFileManager(ToFileManager), FromFileManager(FromFileManager), |
| ToDiags(ToDiags), FromDiags(FromDiags) { |
| ImportedDecls[FromContext.getTranslationUnitDecl()] |
| = ToContext.getTranslationUnitDecl(); |
| } |
| |
| ASTImporter::~ASTImporter() { } |
| |
| QualType ASTImporter::Import(QualType FromT) { |
| if (FromT.isNull()) |
| return QualType(); |
| |
| // Check whether we've already imported this type. |
| llvm::DenseMap<Type *, Type *>::iterator Pos |
| = ImportedTypes.find(FromT.getTypePtr()); |
| if (Pos != ImportedTypes.end()) |
| return ToContext.getQualifiedType(Pos->second, FromT.getQualifiers()); |
| |
| // Import the type |
| ASTNodeImporter Importer(*this); |
| QualType ToT = Importer.Visit(FromT.getTypePtr()); |
| if (ToT.isNull()) |
| return ToT; |
| |
| // Record the imported type. |
| ImportedTypes[FromT.getTypePtr()] = ToT.getTypePtr(); |
| |
| return ToContext.getQualifiedType(ToT, FromT.getQualifiers()); |
| } |
| |
| TypeSourceInfo *ASTImporter::Import(TypeSourceInfo *FromTSI) { |
| // FIXME: Implement! |
| return 0; |
| } |
| |
| Decl *ASTImporter::Import(Decl *FromD) { |
| if (!FromD) |
| return 0; |
| |
| // Check whether we've already imported this declaration. |
| llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD); |
| if (Pos != ImportedDecls.end()) |
| return Pos->second; |
| |
| // Import the type |
| ASTNodeImporter Importer(*this); |
| Decl *ToD = Importer.Visit(FromD); |
| if (!ToD) |
| return 0; |
| |
| // Record the imported declaration. |
| ImportedDecls[FromD] = ToD; |
| return ToD; |
| } |
| |
| DeclContext *ASTImporter::ImportContext(DeclContext *FromDC) { |
| if (!FromDC) |
| return FromDC; |
| |
| return cast_or_null<DeclContext>(Import(cast<Decl>(FromDC))); |
| } |
| |
| Expr *ASTImporter::Import(Expr *FromE) { |
| if (!FromE) |
| return 0; |
| |
| return cast_or_null<Expr>(Import(cast<Stmt>(FromE))); |
| } |
| |
| Stmt *ASTImporter::Import(Stmt *FromS) { |
| if (!FromS) |
| return 0; |
| |
| // FIXME: Implement! |
| return 0; |
| } |
| |
| NestedNameSpecifier *ASTImporter::Import(NestedNameSpecifier *FromNNS) { |
| if (!FromNNS) |
| return 0; |
| |
| // FIXME: Implement! |
| return 0; |
| } |
| |
| SourceLocation ASTImporter::Import(SourceLocation FromLoc) { |
| if (FromLoc.isInvalid()) |
| return SourceLocation(); |
| |
| SourceManager &FromSM = FromContext.getSourceManager(); |
| |
| // For now, map everything down to its spelling location, so that we |
| // don't have to import macro instantiations. |
| // FIXME: Import macro instantiations! |
| FromLoc = FromSM.getSpellingLoc(FromLoc); |
| std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc); |
| SourceManager &ToSM = ToContext.getSourceManager(); |
| return ToSM.getLocForStartOfFile(Import(Decomposed.first)) |
| .getFileLocWithOffset(Decomposed.second); |
| } |
| |
| SourceRange ASTImporter::Import(SourceRange FromRange) { |
| return SourceRange(Import(FromRange.getBegin()), Import(FromRange.getEnd())); |
| } |
| |
| FileID ASTImporter::Import(FileID FromID) { |
| llvm::DenseMap<unsigned, FileID>::iterator Pos |
| = ImportedFileIDs.find(FromID.getHashValue()); |
| if (Pos != ImportedFileIDs.end()) |
| return Pos->second; |
| |
| SourceManager &FromSM = FromContext.getSourceManager(); |
| SourceManager &ToSM = ToContext.getSourceManager(); |
| const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FromID); |
| assert(FromSLoc.isFile() && "Cannot handle macro instantiations yet"); |
| |
| // Include location of this file. |
| SourceLocation ToIncludeLoc = Import(FromSLoc.getFile().getIncludeLoc()); |
| |
| // Map the FileID for to the "to" source manager. |
| FileID ToID; |
| const SrcMgr::ContentCache *Cache = FromSLoc.getFile().getContentCache(); |
| if (Cache->Entry) { |
| // FIXME: We probably want to use getVirtualFile(), so we don't hit the |
| // disk again |
| // FIXME: We definitely want to re-use the existing MemoryBuffer, rather |
| // than mmap the files several times. |
| const FileEntry *Entry = ToFileManager.getFile(Cache->Entry->getName()); |
| ToID = ToSM.createFileID(Entry, ToIncludeLoc, |
| FromSLoc.getFile().getFileCharacteristic()); |
| } else { |
| // FIXME: We want to re-use the existing MemoryBuffer! |
| const llvm::MemoryBuffer *FromBuf = Cache->getBuffer(); |
| llvm::MemoryBuffer *ToBuf |
| = llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBufferStart(), |
| FromBuf->getBufferEnd(), |
| FromBuf->getBufferIdentifier()); |
| ToID = ToSM.createFileIDForMemBuffer(ToBuf); |
| } |
| |
| |
| ImportedFileIDs[FromID.getHashValue()] = ToID; |
| return ToID; |
| } |
| |
| DeclarationName ASTImporter::Import(DeclarationName FromName) { |
| if (!FromName) |
| return DeclarationName(); |
| |
| switch (FromName.getNameKind()) { |
| case DeclarationName::Identifier: |
| return Import(FromName.getAsIdentifierInfo()); |
| |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| return Import(FromName.getObjCSelector()); |
| |
| case DeclarationName::CXXConstructorName: { |
| QualType T = Import(FromName.getCXXNameType()); |
| if (T.isNull()) |
| return DeclarationName(); |
| |
| return ToContext.DeclarationNames.getCXXConstructorName( |
| ToContext.getCanonicalType(T)); |
| } |
| |
| case DeclarationName::CXXDestructorName: { |
| QualType T = Import(FromName.getCXXNameType()); |
| if (T.isNull()) |
| return DeclarationName(); |
| |
| return ToContext.DeclarationNames.getCXXDestructorName( |
| ToContext.getCanonicalType(T)); |
| } |
| |
| case DeclarationName::CXXConversionFunctionName: { |
| QualType T = Import(FromName.getCXXNameType()); |
| if (T.isNull()) |
| return DeclarationName(); |
| |
| return ToContext.DeclarationNames.getCXXConversionFunctionName( |
| ToContext.getCanonicalType(T)); |
| } |
| |
| case DeclarationName::CXXOperatorName: |
| return ToContext.DeclarationNames.getCXXOperatorName( |
| FromName.getCXXOverloadedOperator()); |
| |
| case DeclarationName::CXXLiteralOperatorName: |
| return ToContext.DeclarationNames.getCXXLiteralOperatorName( |
| Import(FromName.getCXXLiteralIdentifier())); |
| |
| case DeclarationName::CXXUsingDirective: |
| // FIXME: STATICS! |
| return DeclarationName::getUsingDirectiveName(); |
| } |
| |
| // Silence bogus GCC warning |
| return DeclarationName(); |
| } |
| |
| IdentifierInfo *ASTImporter::Import(IdentifierInfo *FromId) { |
| if (!FromId) |
| return 0; |
| |
| return &ToContext.Idents.get(FromId->getName()); |
| } |
| |
| DeclarationName ASTImporter::HandleNameConflict(DeclarationName Name, |
| DeclContext *DC, |
| unsigned IDNS, |
| NamedDecl **Decls, |
| unsigned NumDecls) { |
| return Name; |
| } |
| |
| DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) { |
| return ToDiags.Report(FullSourceLoc(Loc, ToContext.getSourceManager()), |
| DiagID); |
| } |
| |
| DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) { |
| return FromDiags.Report(FullSourceLoc(Loc, FromContext.getSourceManager()), |
| DiagID); |
| } |