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Diffstat (limited to 'clang/lib/AST/ASTImporter.cpp')
| -rw-r--r-- | clang/lib/AST/ASTImporter.cpp | 4676 |
1 files changed, 4676 insertions, 0 deletions
diff --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp new file mode 100644 index 0000000..3879907 --- /dev/null +++ b/clang/lib/AST/ASTImporter.cpp @@ -0,0 +1,4676 @@ +//===--- 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/DeclCXX.h" +#include "clang/AST/DeclObjC.h" +#include "clang/AST/DeclVisitor.h" +#include "clang/AST/StmtVisitor.h" +#include "clang/AST/TypeVisitor.h" +#include "clang/Basic/FileManager.h" +#include "clang/Basic/SourceManager.h" +#include "llvm/Support/MemoryBuffer.h" +#include <deque> + +namespace clang { + class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, QualType>, + public DeclVisitor<ASTNodeImporter, Decl *>, + public StmtVisitor<ASTNodeImporter, Stmt *> { + ASTImporter &Importer; + + public: + explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) { } + + using TypeVisitor<ASTNodeImporter, QualType>::Visit; + using DeclVisitor<ASTNodeImporter, Decl *>::Visit; + using StmtVisitor<ASTNodeImporter, Stmt *>::Visit; + + // Importing types + QualType VisitType(const Type *T); + QualType VisitBuiltinType(const BuiltinType *T); + QualType VisitComplexType(const ComplexType *T); + QualType VisitPointerType(const PointerType *T); + QualType VisitBlockPointerType(const BlockPointerType *T); + QualType VisitLValueReferenceType(const LValueReferenceType *T); + QualType VisitRValueReferenceType(const RValueReferenceType *T); + QualType VisitMemberPointerType(const MemberPointerType *T); + QualType VisitConstantArrayType(const ConstantArrayType *T); + QualType VisitIncompleteArrayType(const IncompleteArrayType *T); + QualType VisitVariableArrayType(const VariableArrayType *T); + // FIXME: DependentSizedArrayType + // FIXME: DependentSizedExtVectorType + QualType VisitVectorType(const VectorType *T); + QualType VisitExtVectorType(const ExtVectorType *T); + QualType VisitFunctionNoProtoType(const FunctionNoProtoType *T); + QualType VisitFunctionProtoType(const FunctionProtoType *T); + // FIXME: UnresolvedUsingType + QualType VisitParenType(const ParenType *T); + QualType VisitTypedefType(const TypedefType *T); + QualType VisitTypeOfExprType(const TypeOfExprType *T); + // FIXME: DependentTypeOfExprType + QualType VisitTypeOfType(const TypeOfType *T); + QualType VisitDecltypeType(const DecltypeType *T); + QualType VisitUnaryTransformType(const UnaryTransformType *T); + QualType VisitAutoType(const AutoType *T); + // FIXME: DependentDecltypeType + QualType VisitRecordType(const RecordType *T); + QualType VisitEnumType(const EnumType *T); + // FIXME: TemplateTypeParmType + // FIXME: SubstTemplateTypeParmType + QualType VisitTemplateSpecializationType(const TemplateSpecializationType *T); + QualType VisitElaboratedType(const ElaboratedType *T); + // FIXME: DependentNameType + // FIXME: DependentTemplateSpecializationType + QualType VisitObjCInterfaceType(const ObjCInterfaceType *T); + QualType VisitObjCObjectType(const ObjCObjectType *T); + QualType VisitObjCObjectPointerType(const ObjCObjectPointerType *T); + + // Importing declarations + bool ImportDeclParts(NamedDecl *D, DeclContext *&DC, + DeclContext *&LexicalDC, DeclarationName &Name, + SourceLocation &Loc); + void ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD = 0); + void ImportDeclarationNameLoc(const DeclarationNameInfo &From, + DeclarationNameInfo& To); + void ImportDeclContext(DeclContext *FromDC, bool ForceImport = false); + + /// \brief What we should import from the definition. + enum ImportDefinitionKind { + /// \brief Import the default subset of the definition, which might be + /// nothing (if minimal import is set) or might be everything (if minimal + /// import is not set). + IDK_Default, + /// \brief Import everything. + IDK_Everything, + /// \brief Import only the bare bones needed to establish a valid + /// DeclContext. + IDK_Basic + }; + + bool shouldForceImportDeclContext(ImportDefinitionKind IDK) { + return IDK == IDK_Everything || + (IDK == IDK_Default && !Importer.isMinimalImport()); + } + + bool ImportDefinition(RecordDecl *From, RecordDecl *To, + ImportDefinitionKind Kind = IDK_Default); + bool ImportDefinition(EnumDecl *From, EnumDecl *To, + ImportDefinitionKind Kind = IDK_Default); + bool ImportDefinition(ObjCInterfaceDecl *From, ObjCInterfaceDecl *To, + ImportDefinitionKind Kind = IDK_Default); + bool ImportDefinition(ObjCProtocolDecl *From, ObjCProtocolDecl *To, + ImportDefinitionKind Kind = IDK_Default); + TemplateParameterList *ImportTemplateParameterList( + TemplateParameterList *Params); + TemplateArgument ImportTemplateArgument(const TemplateArgument &From); + bool ImportTemplateArguments(const TemplateArgument *FromArgs, + unsigned NumFromArgs, + SmallVectorImpl<TemplateArgument> &ToArgs); + bool IsStructuralMatch(RecordDecl *FromRecord, RecordDecl *ToRecord); + bool IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToRecord); + bool IsStructuralMatch(ClassTemplateDecl *From, ClassTemplateDecl *To); + Decl *VisitDecl(Decl *D); + Decl *VisitTranslationUnitDecl(TranslationUnitDecl *D); + Decl *VisitNamespaceDecl(NamespaceDecl *D); + Decl *VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias); + Decl *VisitTypedefDecl(TypedefDecl *D); + Decl *VisitTypeAliasDecl(TypeAliasDecl *D); + Decl *VisitEnumDecl(EnumDecl *D); + Decl *VisitRecordDecl(RecordDecl *D); + Decl *VisitEnumConstantDecl(EnumConstantDecl *D); + Decl *VisitFunctionDecl(FunctionDecl *D); + Decl *VisitCXXMethodDecl(CXXMethodDecl *D); + Decl *VisitCXXConstructorDecl(CXXConstructorDecl *D); + Decl *VisitCXXDestructorDecl(CXXDestructorDecl *D); + Decl *VisitCXXConversionDecl(CXXConversionDecl *D); + Decl *VisitFieldDecl(FieldDecl *D); + Decl *VisitIndirectFieldDecl(IndirectFieldDecl *D); + Decl *VisitObjCIvarDecl(ObjCIvarDecl *D); + Decl *VisitVarDecl(VarDecl *D); + Decl *VisitImplicitParamDecl(ImplicitParamDecl *D); + Decl *VisitParmVarDecl(ParmVarDecl *D); + Decl *VisitObjCMethodDecl(ObjCMethodDecl *D); + Decl *VisitObjCCategoryDecl(ObjCCategoryDecl *D); + Decl *VisitObjCProtocolDecl(ObjCProtocolDecl *D); + Decl *VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); + Decl *VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); + Decl *VisitObjCImplementationDecl(ObjCImplementationDecl *D); + Decl *VisitObjCPropertyDecl(ObjCPropertyDecl *D); + Decl *VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); + Decl *VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); + Decl *VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); + Decl *VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); + Decl *VisitClassTemplateDecl(ClassTemplateDecl *D); + Decl *VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D); + + // Importing statements + Stmt *VisitStmt(Stmt *S); + + // Importing expressions + Expr *VisitExpr(Expr *E); + Expr *VisitDeclRefExpr(DeclRefExpr *E); + Expr *VisitIntegerLiteral(IntegerLiteral *E); + Expr *VisitCharacterLiteral(CharacterLiteral *E); + Expr *VisitParenExpr(ParenExpr *E); + Expr *VisitUnaryOperator(UnaryOperator *E); + Expr *VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E); + Expr *VisitBinaryOperator(BinaryOperator *E); + Expr *VisitCompoundAssignOperator(CompoundAssignOperator *E); + Expr *VisitImplicitCastExpr(ImplicitCastExpr *E); + Expr *VisitCStyleCastExpr(CStyleCastExpr *E); + }; +} +using namespace clang; + +//---------------------------------------------------------------------------- +// Structural Equivalence +//---------------------------------------------------------------------------- + +namespace { + struct StructuralEquivalenceContext { + /// \brief AST contexts for which we are checking structural equivalence. + ASTContext &C1, &C2; + + /// \brief The set of "tentative" equivalences between two canonical + /// declarations, mapping from a declaration in the first context to the + /// declaration in the second context that we believe to be equivalent. + llvm::DenseMap<Decl *, Decl *> TentativeEquivalences; + + /// \brief Queue of declarations in the first context whose equivalence + /// with a declaration in the second context still needs to be verified. + std::deque<Decl *> DeclsToCheck; + + /// \brief Declaration (from, to) pairs that are known not to be equivalent + /// (which we have already complained about). + llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls; + + /// \brief Whether we're being strict about the spelling of types when + /// unifying two types. + bool StrictTypeSpelling; + + StructuralEquivalenceContext(ASTContext &C1, ASTContext &C2, + llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls, + bool StrictTypeSpelling = false) + : C1(C1), C2(C2), NonEquivalentDecls(NonEquivalentDecls), + StrictTypeSpelling(StrictTypeSpelling) { } + + /// \brief Determine whether the two declarations are structurally + /// equivalent. + bool IsStructurallyEquivalent(Decl *D1, Decl *D2); + + /// \brief Determine whether the two types are structurally equivalent. + bool IsStructurallyEquivalent(QualType T1, QualType T2); + + private: + /// \brief Finish checking all of the structural equivalences. + /// + /// \returns true if an error occurred, false otherwise. + bool Finish(); + + public: + DiagnosticBuilder Diag1(SourceLocation Loc, unsigned DiagID) { + return C1.getDiagnostics().Report(Loc, DiagID); + } + + DiagnosticBuilder Diag2(SourceLocation Loc, unsigned DiagID) { + return C2.getDiagnostics().Report(Loc, DiagID); + } + }; +} + +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + QualType T1, QualType T2); +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + Decl *D1, Decl *D2); + +/// \brief Determine if two APInts have the same value, after zero-extending +/// one of them (if needed!) to ensure that the bit-widths match. +static bool IsSameValue(const llvm::APInt &I1, const llvm::APInt &I2) { + if (I1.getBitWidth() == I2.getBitWidth()) + return I1 == I2; + + if (I1.getBitWidth() > I2.getBitWidth()) + return I1 == I2.zext(I1.getBitWidth()); + + return I1.zext(I2.getBitWidth()) == I2; +} + +/// \brief Determine if two APSInts have the same value, zero- or sign-extending +/// as needed. +static bool IsSameValue(const llvm::APSInt &I1, const llvm::APSInt &I2) { + if (I1.getBitWidth() == I2.getBitWidth() && I1.isSigned() == I2.isSigned()) + return I1 == I2; + + // Check for a bit-width mismatch. + if (I1.getBitWidth() > I2.getBitWidth()) + return IsSameValue(I1, I2.extend(I1.getBitWidth())); + else if (I2.getBitWidth() > I1.getBitWidth()) + return IsSameValue(I1.extend(I2.getBitWidth()), I2); + + // We have a signedness mismatch. Turn the signed value into an unsigned + // value. + if (I1.isSigned()) { + if (I1.isNegative()) + return false; + + return llvm::APSInt(I1, true) == I2; + } + + if (I2.isNegative()) + return false; + + return I1 == llvm::APSInt(I2, true); +} + +/// \brief Determine structural equivalence of two expressions. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + Expr *E1, Expr *E2) { + if (!E1 || !E2) + return E1 == E2; + + // FIXME: Actually perform a structural comparison! + return true; +} + +/// \brief Determine whether two identifiers are equivalent. +static bool IsStructurallyEquivalent(const IdentifierInfo *Name1, + const IdentifierInfo *Name2) { + if (!Name1 || !Name2) + return Name1 == Name2; + + return Name1->getName() == Name2->getName(); +} + +/// \brief Determine whether two nested-name-specifiers are equivalent. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + NestedNameSpecifier *NNS1, + NestedNameSpecifier *NNS2) { + // FIXME: Implement! + return true; +} + +/// \brief Determine whether two template arguments are equivalent. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + const TemplateArgument &Arg1, + const TemplateArgument &Arg2) { + if (Arg1.getKind() != Arg2.getKind()) + return false; + + switch (Arg1.getKind()) { + case TemplateArgument::Null: + return true; + + case TemplateArgument::Type: + return Context.IsStructurallyEquivalent(Arg1.getAsType(), Arg2.getAsType()); + + case TemplateArgument::Integral: + if (!Context.IsStructurallyEquivalent(Arg1.getIntegralType(), + Arg2.getIntegralType())) + return false; + + return IsSameValue(*Arg1.getAsIntegral(), *Arg2.getAsIntegral()); + + case TemplateArgument::Declaration: + if (!Arg1.getAsDecl() || !Arg2.getAsDecl()) + return !Arg1.getAsDecl() && !Arg2.getAsDecl(); + return Context.IsStructurallyEquivalent(Arg1.getAsDecl(), Arg2.getAsDecl()); + + case TemplateArgument::Template: + return IsStructurallyEquivalent(Context, + Arg1.getAsTemplate(), + Arg2.getAsTemplate()); + + case TemplateArgument::TemplateExpansion: + return IsStructurallyEquivalent(Context, + Arg1.getAsTemplateOrTemplatePattern(), + Arg2.getAsTemplateOrTemplatePattern()); + + case TemplateArgument::Expression: + return IsStructurallyEquivalent(Context, + Arg1.getAsExpr(), Arg2.getAsExpr()); + + case TemplateArgument::Pack: + if (Arg1.pack_size() != Arg2.pack_size()) + return false; + + for (unsigned I = 0, N = Arg1.pack_size(); I != N; ++I) + if (!IsStructurallyEquivalent(Context, + Arg1.pack_begin()[I], + Arg2.pack_begin()[I])) + return false; + + return true; + } + + llvm_unreachable("Invalid template argument kind"); +} + +/// \brief Determine structural equivalence for the common part of array +/// types. +static bool IsArrayStructurallyEquivalent(StructuralEquivalenceContext &Context, + const ArrayType *Array1, + const ArrayType *Array2) { + if (!IsStructurallyEquivalent(Context, + Array1->getElementType(), + Array2->getElementType())) + return false; + if (Array1->getSizeModifier() != Array2->getSizeModifier()) + return false; + if (Array1->getIndexTypeQualifiers() != Array2->getIndexTypeQualifiers()) + return false; + + return true; +} + +/// \brief Determine structural equivalence of two types. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + QualType T1, QualType T2) { + if (T1.isNull() || T2.isNull()) + return T1.isNull() && T2.isNull(); + + if (!Context.StrictTypeSpelling) { + // We aren't being strict about token-to-token equivalence of types, + // so map down to the canonical type. + T1 = Context.C1.getCanonicalType(T1); + T2 = Context.C2.getCanonicalType(T2); + } + + if (T1.getQualifiers() != T2.getQualifiers()) + return false; + + Type::TypeClass TC = T1->getTypeClass(); + + if (T1->getTypeClass() != T2->getTypeClass()) { + // Compare function types with prototypes vs. without prototypes as if + // both did not have prototypes. + if (T1->getTypeClass() == Type::FunctionProto && + T2->getTypeClass() == Type::FunctionNoProto) + TC = Type::FunctionNoProto; + else if (T1->getTypeClass() == Type::FunctionNoProto && + T2->getTypeClass() == Type::FunctionProto) + TC = Type::FunctionNoProto; + else + return false; + } + + switch (TC) { + case Type::Builtin: + // FIXME: Deal with Char_S/Char_U. + if (cast<BuiltinType>(T1)->getKind() != cast<BuiltinType>(T2)->getKind()) + return false; + break; + + case Type::Complex: + if (!IsStructurallyEquivalent(Context, + cast<ComplexType>(T1)->getElementType(), + cast<ComplexType>(T2)->getElementType())) + return false; + break; + + case Type::Pointer: + if (!IsStructurallyEquivalent(Context, + cast<PointerType>(T1)->getPointeeType(), + cast<PointerType>(T2)->getPointeeType())) + return false; + break; + + case Type::BlockPointer: + if (!IsStructurallyEquivalent(Context, + cast<BlockPointerType>(T1)->getPointeeType(), + cast<BlockPointerType>(T2)->getPointeeType())) + return false; + break; + + case Type::LValueReference: + case Type::RValueReference: { + const ReferenceType *Ref1 = cast<ReferenceType>(T1); + const ReferenceType *Ref2 = cast<ReferenceType>(T2); + if (Ref1->isSpelledAsLValue() != Ref2->isSpelledAsLValue()) + return false; + if (Ref1->isInnerRef() != Ref2->isInnerRef()) + return false; + if (!IsStructurallyEquivalent(Context, + Ref1->getPointeeTypeAsWritten(), + Ref2->getPointeeTypeAsWritten())) + return false; + break; + } + + case Type::MemberPointer: { + const MemberPointerType *MemPtr1 = cast<MemberPointerType>(T1); + const MemberPointerType *MemPtr2 = cast<MemberPointerType>(T2); + if (!IsStructurallyEquivalent(Context, + MemPtr1->getPointeeType(), + MemPtr2->getPointeeType())) + return false; + if (!IsStructurallyEquivalent(Context, + QualType(MemPtr1->getClass(), 0), + QualType(MemPtr2->getClass(), 0))) + return false; + break; + } + + case Type::ConstantArray: { + const ConstantArrayType *Array1 = cast<ConstantArrayType>(T1); + const ConstantArrayType *Array2 = cast<ConstantArrayType>(T2); + if (!IsSameValue(Array1->getSize(), Array2->getSize())) + return false; + + if (!IsArrayStructurallyEquivalent(Context, Array1, Array2)) + return false; + break; + } + + case Type::IncompleteArray: + if (!IsArrayStructurallyEquivalent(Context, + cast<ArrayType>(T1), + cast<ArrayType>(T2))) + return false; + break; + + case Type::VariableArray: { + const VariableArrayType *Array1 = cast<VariableArrayType>(T1); + const VariableArrayType *Array2 = cast<VariableArrayType>(T2); + if (!IsStructurallyEquivalent(Context, + Array1->getSizeExpr(), Array2->getSizeExpr())) + return false; + + if (!IsArrayStructurallyEquivalent(Context, Array1, Array2)) + return false; + + break; + } + + case Type::DependentSizedArray: { + const DependentSizedArrayType *Array1 = cast<DependentSizedArrayType>(T1); + const DependentSizedArrayType *Array2 = cast<DependentSizedArrayType>(T2); + if (!IsStructurallyEquivalent(Context, + Array1->getSizeExpr(), Array2->getSizeExpr())) + return false; + + if (!IsArrayStructurallyEquivalent(Context, Array1, Array2)) + return false; + + break; + } + + case Type::DependentSizedExtVector: { + const DependentSizedExtVectorType *Vec1 + = cast<DependentSizedExtVectorType>(T1); + const DependentSizedExtVectorType *Vec2 + = cast<DependentSizedExtVectorType>(T2); + if (!IsStructurallyEquivalent(Context, + Vec1->getSizeExpr(), Vec2->getSizeExpr())) + return false; + if (!IsStructurallyEquivalent(Context, + Vec1->getElementType(), + Vec2->getElementType())) + return false; + break; + } + + case Type::Vector: + case Type::ExtVector: { + const VectorType *Vec1 = cast<VectorType>(T1); + const VectorType *Vec2 = cast<VectorType>(T2); + if (!IsStructurallyEquivalent(Context, + Vec1->getElementType(), + Vec2->getElementType())) + return false; + if (Vec1->getNumElements() != Vec2->getNumElements()) + return false; + if (Vec1->getVectorKind() != Vec2->getVectorKind()) + return false; + break; + } + + case Type::FunctionProto: { + const FunctionProtoType *Proto1 = cast<FunctionProtoType>(T1); + const FunctionProtoType *Proto2 = cast<FunctionProtoType>(T2); + if (Proto1->getNumArgs() != Proto2->getNumArgs()) + return false; + for (unsigned I = 0, N = Proto1->getNumArgs(); I != N; ++I) { + if (!IsStructurallyEquivalent(Context, + Proto1->getArgType(I), + Proto2->getArgType(I))) + return false; + } + if (Proto1->isVariadic() != Proto2->isVariadic()) + return false; + if (Proto1->getExceptionSpecType() != Proto2->getExceptionSpecType()) + return false; + if (Proto1->getExceptionSpecType() == EST_Dynamic) { + if (Proto1->getNumExceptions() != Proto2->getNumExceptions()) + return false; + for (unsigned I = 0, N = Proto1->getNumExceptions(); I != N; ++I) { + if (!IsStructurallyEquivalent(Context, + Proto1->getExceptionType(I), + Proto2->getExceptionType(I))) + return false; + } + } else if (Proto1->getExceptionSpecType() == EST_ComputedNoexcept) { + if (!IsStructurallyEquivalent(Context, + Proto1->getNoexceptExpr(), + Proto2->getNoexceptExpr())) + return false; + } + if (Proto1->getTypeQuals() != Proto2->getTypeQuals()) + return false; + + // Fall through to check the bits common with FunctionNoProtoType. + } + + case Type::FunctionNoProto: { + const FunctionType *Function1 = cast<FunctionType>(T1); + const FunctionType *Function2 = cast<FunctionType>(T2); + if (!IsStructurallyEquivalent(Context, + Function1->getResultType(), + Function2->getResultType())) + return false; + if (Function1->getExtInfo() != Function2->getExtInfo()) + return false; + break; + } + + case Type::UnresolvedUsing: + if (!IsStructurallyEquivalent(Context, + cast<UnresolvedUsingType>(T1)->getDecl(), + cast<UnresolvedUsingType>(T2)->getDecl())) + return false; + + break; + + case Type::Attributed: + if (!IsStructurallyEquivalent(Context, + cast<AttributedType>(T1)->getModifiedType(), + cast<AttributedType>(T2)->getModifiedType())) + return false; + if (!IsStructurallyEquivalent(Context, + cast<AttributedType>(T1)->getEquivalentType(), + cast<AttributedType>(T2)->getEquivalentType())) + return false; + break; + + case Type::Paren: + if (!IsStructurallyEquivalent(Context, + cast<ParenType>(T1)->getInnerType(), + cast<ParenType>(T2)->getInnerType())) + return false; + break; + + case Type::Typedef: + if (!IsStructurallyEquivalent(Context, + cast<TypedefType>(T1)->getDecl(), + cast<TypedefType>(T2)->getDecl())) + return false; + break; + + case Type::TypeOfExpr: + if (!IsStructurallyEquivalent(Context, + cast<TypeOfExprType>(T1)->getUnderlyingExpr(), + cast<TypeOfExprType>(T2)->getUnderlyingExpr())) + return false; + break; + + case Type::TypeOf: + if (!IsStructurallyEquivalent(Context, + cast<TypeOfType>(T1)->getUnderlyingType(), + cast<TypeOfType>(T2)->getUnderlyingType())) + return false; + break; + + case Type::UnaryTransform: + if (!IsStructurallyEquivalent(Context, + cast<UnaryTransformType>(T1)->getUnderlyingType(), + cast<UnaryTransformType>(T1)->getUnderlyingType())) + return false; + break; + + case Type::Decltype: + if (!IsStructurallyEquivalent(Context, + cast<DecltypeType>(T1)->getUnderlyingExpr(), + cast<DecltypeType>(T2)->getUnderlyingExpr())) + return false; + break; + + case Type::Auto: + if (!IsStructurallyEquivalent(Context, + cast<AutoType>(T1)->getDeducedType(), + cast<AutoType>(T2)->getDeducedType())) + return false; + break; + + case Type::Record: + case Type::Enum: + if (!IsStructurallyEquivalent(Context, + cast<TagType>(T1)->getDecl(), + cast<TagType>(T2)->getDecl())) + return false; + break; + + case Type::TemplateTypeParm: { + const TemplateTypeParmType *Parm1 = cast<TemplateTypeParmType>(T1); + const TemplateTypeParmType *Parm2 = cast<TemplateTypeParmType>(T2); + if (Parm1->getDepth() != Parm2->getDepth()) + return false; + if (Parm1->getIndex() != Parm2->getIndex()) + return false; + if (Parm1->isParameterPack() != Parm2->isParameterPack()) + return false; + + // Names of template type parameters are never significant. + break; + } + + case Type::SubstTemplateTypeParm: { + const SubstTemplateTypeParmType *Subst1 + = cast<SubstTemplateTypeParmType>(T1); + const SubstTemplateTypeParmType *Subst2 + = cast<SubstTemplateTypeParmType>(T2); + if (!IsStructurallyEquivalent(Context, + QualType(Subst1->getReplacedParameter(), 0), + QualType(Subst2->getReplacedParameter(), 0))) + return false; + if (!IsStructurallyEquivalent(Context, + Subst1->getReplacementType(), + Subst2->getReplacementType())) + return false; + break; + } + + case Type::SubstTemplateTypeParmPack: { + const SubstTemplateTypeParmPackType *Subst1 + = cast<SubstTemplateTypeParmPackType>(T1); + const SubstTemplateTypeParmPackType *Subst2 + = cast<SubstTemplateTypeParmPackType>(T2); + if (!IsStructurallyEquivalent(Context, + QualType(Subst1->getReplacedParameter(), 0), + QualType(Subst2->getReplacedParameter(), 0))) + return false; + if (!IsStructurallyEquivalent(Context, + Subst1->getArgumentPack(), + Subst2->getArgumentPack())) + return false; + break; + } + case Type::TemplateSpecialization: { + const TemplateSpecializationType *Spec1 + = cast<TemplateSpecializationType>(T1); + const TemplateSpecializationType *Spec2 + = cast<TemplateSpecializationType>(T2); + if (!IsStructurallyEquivalent(Context, + Spec1->getTemplateName(), + Spec2->getTemplateName())) + return false; + if (Spec1->getNumArgs() != Spec2->getNumArgs()) + return false; + for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) { + if (!IsStructurallyEquivalent(Context, + Spec1->getArg(I), Spec2->getArg(I))) + return false; + } + break; + } + + case Type::Elaborated: { + const ElaboratedType *Elab1 = cast<ElaboratedType>(T1); + const ElaboratedType *Elab2 = cast<ElaboratedType>(T2); + // CHECKME: what if a keyword is ETK_None or ETK_typename ? + if (Elab1->getKeyword() != Elab2->getKeyword()) + return false; + if (!IsStructurallyEquivalent(Context, + Elab1->getQualifier(), + Elab2->getQualifier())) + return false; + if (!IsStructurallyEquivalent(Context, + Elab1->getNamedType(), + Elab2->getNamedType())) + return false; + break; + } + + case Type::InjectedClassName: { + const InjectedClassNameType *Inj1 = cast<InjectedClassNameType>(T1); + const InjectedClassNameType *Inj2 = cast<InjectedClassNameType>(T2); + if (!IsStructurallyEquivalent(Context, + Inj1->getInjectedSpecializationType(), + Inj2->getInjectedSpecializationType())) + return false; + break; + } + + case Type::DependentName: { + const DependentNameType *Typename1 = cast<DependentNameType>(T1); + const DependentNameType *Typename2 = cast<DependentNameType>(T2); + if (!IsStructurallyEquivalent(Context, + Typename1->getQualifier(), + Typename2->getQualifier())) + return false; + if (!IsStructurallyEquivalent(Typename1->getIdentifier(), + Typename2->getIdentifier())) + return false; + + break; + } + + case Type::DependentTemplateSpecialization: { + const DependentTemplateSpecializationType *Spec1 = + cast<DependentTemplateSpecializationType>(T1); + const DependentTemplateSpecializationType *Spec2 = + cast<DependentTemplateSpecializationType>(T2); + if (!IsStructurallyEquivalent(Context, + Spec1->getQualifier(), + Spec2->getQualifier())) + return false; + if (!IsStructurallyEquivalent(Spec1->getIdentifier(), + Spec2->getIdentifier())) + return false; + if (Spec1->getNumArgs() != Spec2->getNumArgs()) + return false; + for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) { + if (!IsStructurallyEquivalent(Context, + Spec1->getArg(I), Spec2->getArg(I))) + return false; + } + break; + } + + case Type::PackExpansion: + if (!IsStructurallyEquivalent(Context, + cast<PackExpansionType>(T1)->getPattern(), + cast<PackExpansionType>(T2)->getPattern())) + return false; + break; + + case Type::ObjCInterface: { + const ObjCInterfaceType *Iface1 = cast<ObjCInterfaceType>(T1); + const ObjCInterfaceType *Iface2 = cast<ObjCInterfaceType>(T2); + if (!IsStructurallyEquivalent(Context, + Iface1->getDecl(), Iface2->getDecl())) + return false; + break; + } + + case Type::ObjCObject: { + const ObjCObjectType *Obj1 = cast<ObjCObjectType>(T1); + const ObjCObjectType *Obj2 = cast<ObjCObjectType>(T2); + if (!IsStructurallyEquivalent(Context, + Obj1->getBaseType(), + Obj2->getBaseType())) + return false; + if (Obj1->getNumProtocols() != Obj2->getNumProtocols()) + return false; + for (unsigned I = 0, N = Obj1->getNumProtocols(); I != N; ++I) { + if (!IsStructurallyEquivalent(Context, + Obj1->getProtocol(I), + Obj2->getProtocol(I))) + return false; + } + break; + } + + case Type::ObjCObjectPointer: { + const ObjCObjectPointerType *Ptr1 = cast<ObjCObjectPointerType>(T1); + const ObjCObjectPointerType *Ptr2 = cast<ObjCObjectPointerType>(T2); + if (!IsStructurallyEquivalent(Context, + Ptr1->getPointeeType(), + Ptr2->getPointeeType())) + return false; + break; + } + + case Type::Atomic: { + if (!IsStructurallyEquivalent(Context, + cast<AtomicType>(T1)->getValueType(), + cast<AtomicType>(T2)->getValueType())) + return false; + break; + } + + } // end switch + + return true; +} + +/// \brief Determine structural equivalence of two fields. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + FieldDecl *Field1, FieldDecl *Field2) { + RecordDecl *Owner2 = cast<RecordDecl>(Field2->getDeclContext()); + + if (!IsStructurallyEquivalent(Context, + Field1->getType(), Field2->getType())) { + Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(Owner2); + Context.Diag2(Field2->getLocation(), diag::note_odr_field) + << Field2->getDeclName() << Field2->getType(); + Context.Diag1(Field1->getLocation(), diag::note_odr_field) + << Field1->getDeclName() << Field1->getType(); + return false; + } + + if (Field1->isBitField() != Field2->isBitField()) { + Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(Owner2); + if (Field1->isBitField()) { + Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field) + << Field1->getDeclName() << Field1->getType() + << Field1->getBitWidthValue(Context.C1); + Context.Diag2(Field2->getLocation(), diag::note_odr_not_bit_field) + << Field2->getDeclName(); + } else { + Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field) + << Field2->getDeclName() << Field2->getType() + << Field2->getBitWidthValue(Context.C2); + Context.Diag1(Field1->getLocation(), diag::note_odr_not_bit_field) + << Field1->getDeclName(); + } + return false; + } + + if (Field1->isBitField()) { + // Make sure that the bit-fields are the same length. + unsigned Bits1 = Field1->getBitWidthValue(Context.C1); + unsigned Bits2 = Field2->getBitWidthValue(Context.C2); + + if (Bits1 != Bits2) { + Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(Owner2); + Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field) + << Field2->getDeclName() << Field2->getType() << Bits2; + Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field) + << Field1->getDeclName() << Field1->getType() << Bits1; + return false; + } + } + + return true; +} + +/// \brief Determine structural equivalence of two records. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + RecordDecl *D1, RecordDecl *D2) { + if (D1->isUnion() != D2->isUnion()) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag1(D1->getLocation(), diag::note_odr_tag_kind_here) + << D1->getDeclName() << (unsigned)D1->getTagKind(); + return false; + } + + // If both declarations are class template specializations, we know + // the ODR applies, so check the template and template arguments. + ClassTemplateSpecializationDecl *Spec1 + = dyn_cast<ClassTemplateSpecializationDecl>(D1); + ClassTemplateSpecializationDecl *Spec2 + = dyn_cast<ClassTemplateSpecializationDecl>(D2); + if (Spec1 && Spec2) { + // Check that the specialized templates are the same. + if (!IsStructurallyEquivalent(Context, Spec1->getSpecializedTemplate(), + Spec2->getSpecializedTemplate())) + return false; + + // Check that the template arguments are the same. + if (Spec1->getTemplateArgs().size() != Spec2->getTemplateArgs().size()) + return false; + + for (unsigned I = 0, N = Spec1->getTemplateArgs().size(); I != N; ++I) + if (!IsStructurallyEquivalent(Context, + Spec1->getTemplateArgs().get(I), + Spec2->getTemplateArgs().get(I))) + return false; + } + // If one is a class template specialization and the other is not, these + // structures are different. + else if (Spec1 || Spec2) + return false; + + // Compare the definitions of these two records. If either or both are + // incomplete, we assume that they are equivalent. + D1 = D1->getDefinition(); + D2 = D2->getDefinition(); + if (!D1 || !D2) + return true; + + if (CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(D1)) { + if (CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(D2)) { + if (D1CXX->getNumBases() != D2CXX->getNumBases()) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag2(D2->getLocation(), diag::note_odr_number_of_bases) + << D2CXX->getNumBases(); + Context.Diag1(D1->getLocation(), diag::note_odr_number_of_bases) + << D1CXX->getNumBases(); + return false; + } + + // Check the base classes. + for (CXXRecordDecl::base_class_iterator Base1 = D1CXX->bases_begin(), + BaseEnd1 = D1CXX->bases_end(), + Base2 = D2CXX->bases_begin(); + Base1 != BaseEnd1; + ++Base1, ++Base2) { + if (!IsStructurallyEquivalent(Context, + Base1->getType(), Base2->getType())) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag2(Base2->getLocStart(), diag::note_odr_base) + << Base2->getType() + << Base2->getSourceRange(); + Context.Diag1(Base1->getLocStart(), diag::note_odr_base) + << Base1->getType() + << Base1->getSourceRange(); + return false; + } + + // Check virtual vs. non-virtual inheritance mismatch. + if (Base1->isVirtual() != Base2->isVirtual()) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag2(Base2->getLocStart(), + diag::note_odr_virtual_base) + << Base2->isVirtual() << Base2->getSourceRange(); + Context.Diag1(Base1->getLocStart(), diag::note_odr_base) + << Base1->isVirtual() + << Base1->getSourceRange(); + return false; + } + } + } else if (D1CXX->getNumBases() > 0) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + const CXXBaseSpecifier *Base1 = D1CXX->bases_begin(); + Context.Diag1(Base1->getLocStart(), diag::note_odr_base) + << Base1->getType() + << Base1->getSourceRange(); + Context.Diag2(D2->getLocation(), diag::note_odr_missing_base); + return false; + } + } + + // Check the fields for consistency. + CXXRecordDecl::field_iterator Field2 = D2->field_begin(), + Field2End = D2->field_end(); + for (CXXRecordDecl::field_iterator Field1 = D1->field_begin(), + Field1End = D1->field_end(); + Field1 != Field1End; + ++Field1, ++Field2) { + if (Field2 == Field2End) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag1(Field1->getLocation(), diag::note_odr_field) + << Field1->getDeclName() << Field1->getType(); + Context.Diag2(D2->getLocation(), diag::note_odr_missing_field); + return false; + } + + if (!IsStructurallyEquivalent(Context, *Field1, *Field2)) + return false; + } + + if (Field2 != Field2End) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag2(Field2->getLocation(), diag::note_odr_field) + << Field2->getDeclName() << Field2->getType(); + Context.Diag1(D1->getLocation(), diag::note_odr_missing_field); + return false; + } + + return true; +} + +/// \brief Determine structural equivalence of two enums. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + EnumDecl *D1, EnumDecl *D2) { + EnumDecl::enumerator_iterator EC2 = D2->enumerator_begin(), + EC2End = D2->enumerator_end(); + for (EnumDecl::enumerator_iterator EC1 = D1->enumerator_begin(), + EC1End = D1->enumerator_end(); + EC1 != EC1End; ++EC1, ++EC2) { + if (EC2 == EC2End) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator) + << EC1->getDeclName() + << EC1->getInitVal().toString(10); + Context.Diag2(D2->getLocation(), diag::note_odr_missing_enumerator); + return false; + } + + llvm::APSInt Val1 = EC1->getInitVal(); + llvm::APSInt Val2 = EC2->getInitVal(); + if (!IsSameValue(Val1, Val2) || + !IsStructurallyEquivalent(EC1->getIdentifier(), EC2->getIdentifier())) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator) + << EC2->getDeclName() + << EC2->getInitVal().toString(10); + Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator) + << EC1->getDeclName() + << EC1->getInitVal().toString(10); + return false; + } + } + + if (EC2 != EC2End) { + Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) + << Context.C2.getTypeDeclType(D2); + Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator) + << EC2->getDeclName() + << EC2->getInitVal().toString(10); + Context.Diag1(D1->getLocation(), diag::note_odr_missing_enumerator); + return false; + } + + return true; +} + +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + TemplateParameterList *Params1, + TemplateParameterList *Params2) { + if (Params1->size() != Params2->size()) { + Context.Diag2(Params2->getTemplateLoc(), + diag::err_odr_different_num_template_parameters) + << Params1->size() << Params2->size(); + Context.Diag1(Params1->getTemplateLoc(), + diag::note_odr_template_parameter_list); + return false; + } + + for (unsigned I = 0, N = Params1->size(); I != N; ++I) { + if (Params1->getParam(I)->getKind() != Params2->getParam(I)->getKind()) { + Context.Diag2(Params2->getParam(I)->getLocation(), + diag::err_odr_different_template_parameter_kind); + Context.Diag1(Params1->getParam(I)->getLocation(), + diag::note_odr_template_parameter_here); + return false; + } + + if (!Context.IsStructurallyEquivalent(Params1->getParam(I), + Params2->getParam(I))) { + + return false; + } + } + + return true; +} + +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + TemplateTypeParmDecl *D1, + TemplateTypeParmDecl *D2) { + if (D1->isParameterPack() != D2->isParameterPack()) { + Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack) + << D2->isParameterPack(); + Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack) + << D1->isParameterPack(); + return false; + } + + return true; +} + +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + NonTypeTemplateParmDecl *D1, + NonTypeTemplateParmDecl *D2) { + // FIXME: Enable once we have variadic templates. +#if 0 + if (D1->isParameterPack() != D2->isParameterPack()) { + Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack) + << D2->isParameterPack(); + Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack) + << D1->isParameterPack(); + return false; + } +#endif + + // Check types. + if (!Context.IsStructurallyEquivalent(D1->getType(), D2->getType())) { + Context.Diag2(D2->getLocation(), + diag::err_odr_non_type_parameter_type_inconsistent) + << D2->getType() << D1->getType(); + Context.Diag1(D1->getLocation(), diag::note_odr_value_here) + << D1->getType(); + return false; + } + + return true; +} + +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + TemplateTemplateParmDecl *D1, + TemplateTemplateParmDecl *D2) { + // FIXME: Enable once we have variadic templates. +#if 0 + if (D1->isParameterPack() != D2->isParameterPack()) { + Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack) + << D2->isParameterPack(); + Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack) + << D1->isParameterPack(); + return false; + } +#endif + + // Check template parameter lists. + return IsStructurallyEquivalent(Context, D1->getTemplateParameters(), + D2->getTemplateParameters()); +} + +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + ClassTemplateDecl *D1, + ClassTemplateDecl *D2) { + // Check template parameters. + if (!IsStructurallyEquivalent(Context, + D1->getTemplateParameters(), + D2->getTemplateParameters())) + return false; + + // Check the templated declaration. + return Context.IsStructurallyEquivalent(D1->getTemplatedDecl(), + D2->getTemplatedDecl()); +} + +/// \brief Determine structural equivalence of two declarations. +static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, + Decl *D1, Decl *D2) { + // FIXME: Check for known structural equivalences via a callback of some sort. + + // Check whether we already know that these two declarations are not + // structurally equivalent. + if (Context.NonEquivalentDecls.count(std::make_pair(D1->getCanonicalDecl(), + D2->getCanonicalDecl()))) + return false; + + // Determine whether we've already produced a tentative equivalence for D1. + Decl *&EquivToD1 = Context.TentativeEquivalences[D1->getCanonicalDecl()]; + if (EquivToD1) + return EquivToD1 == D2->getCanonicalDecl(); + + // Produce a tentative equivalence D1 <-> D2, which will be checked later. + EquivToD1 = D2->getCanonicalDecl(); + Context.DeclsToCheck.push_back(D1->getCanonicalDecl()); + return true; +} + +bool StructuralEquivalenceContext::IsStructurallyEquivalent(Decl *D1, + Decl *D2) { + if (!::IsStructurallyEquivalent(*this, D1, D2)) + return false; + + return !Finish(); +} + +bool StructuralEquivalenceContext::IsStructurallyEquivalent(QualType T1, + QualType T2) { + if (!::IsStructurallyEquivalent(*this, T1, T2)) + return false; + + return !Finish(); +} + +bool StructuralEquivalenceContext::Finish() { + while (!DeclsToCheck.empty()) { + // Check the next declaration. + Decl *D1 = DeclsToCheck.front(); + DeclsToCheck.pop_front(); + + Decl *D2 = TentativeEquivalences[D1]; + assert(D2 && "Unrecorded tentative equivalence?"); + + bool Equivalent = true; + + // FIXME: Switch on all declaration kinds. For now, we're just going to + // check the obvious ones. + if (RecordDecl *Record1 = dyn_cast<RecordDecl>(D1)) { + if (RecordDecl *Record2 = dyn_cast<RecordDecl>(D2)) { + // Check for equivalent structure names. + IdentifierInfo *Name1 = Record1->getIdentifier(); + if (!Name1 && Record1->getTypedefNameForAnonDecl()) + Name1 = Record1->getTypedefNameForAnonDecl()->getIdentifier(); + IdentifierInfo *Name2 = Record2->getIdentifier(); + if (!Name2 && Record2->getTypedefNameForAnonDecl()) + Name2 = Record2->getTypedefNameForAnonDecl()->getIdentifier(); + if (!::IsStructurallyEquivalent(Name1, Name2) || + !::IsStructurallyEquivalent(*this, Record1, Record2)) + Equivalent = false; + } else { + // Record/non-record mismatch. + Equivalent = false; + } + } else if (EnumDecl *Enum1 = dyn_cast<EnumDecl>(D1)) { + if (EnumDecl *Enum2 = dyn_cast<EnumDecl>(D2)) { + // Check for equivalent enum names. + IdentifierInfo *Name1 = Enum1->getIdentifier(); + if (!Name1 && Enum1->getTypedefNameForAnonDecl()) + Name1 = Enum1->getTypedefNameForAnonDecl()->getIdentifier(); + IdentifierInfo *Name2 = Enum2->getIdentifier(); + if (!Name2 && Enum2->getTypedefNameForAnonDecl()) + Name2 = Enum2->getTypedefNameForAnonDecl()->getIdentifier(); + if (!::IsStructurallyEquivalent(Name1, Name2) || + !::IsStructurallyEquivalent(*this, Enum1, Enum2)) + Equivalent = false; + } else { + // Enum/non-enum mismatch + Equivalent = false; + } + } else if (TypedefNameDecl *Typedef1 = dyn_cast<TypedefNameDecl>(D1)) { + if (TypedefNameDecl *Typedef2 = dyn_cast<TypedefNameDecl>(D2)) { + if (!::IsStructurallyEquivalent(Typedef1->getIdentifier(), + Typedef2->getIdentifier()) || + !::IsStructurallyEquivalent(*this, + Typedef1->getUnderlyingType(), + Typedef2->getUnderlyingType())) + Equivalent = false; + } else { + // Typedef/non-typedef mismatch. + Equivalent = false; + } + } else if (ClassTemplateDecl *ClassTemplate1 + = dyn_cast<ClassTemplateDecl>(D1)) { + if (ClassTemplateDecl *ClassTemplate2 = dyn_cast<ClassTemplateDecl>(D2)) { + if (!::IsStructurallyEquivalent(ClassTemplate1->getIdentifier(), + ClassTemplate2->getIdentifier()) || + !::IsStructurallyEquivalent(*this, ClassTemplate1, ClassTemplate2)) + Equivalent = false; + } else { + // Class template/non-class-template mismatch. + Equivalent = false; + } + } else if (TemplateTypeParmDecl *TTP1= dyn_cast<TemplateTypeParmDecl>(D1)) { + if (TemplateTypeParmDecl *TTP2 = dyn_cast<TemplateTypeParmDecl>(D2)) { + if (!::IsStructurallyEquivalent(*this, TTP1, TTP2)) + Equivalent = false; + } else { + // Kind mismatch. + Equivalent = false; + } + } else if (NonTypeTemplateParmDecl *NTTP1 + = dyn_cast<NonTypeTemplateParmDecl>(D1)) { + if (NonTypeTemplateParmDecl *NTTP2 + = dyn_cast<NonTypeTemplateParmDecl>(D2)) { + if (!::IsStructurallyEquivalent(*this, NTTP1, NTTP2)) + Equivalent = false; + } else { + // Kind mismatch. + Equivalent = false; + } + } else if (TemplateTemplateParmDecl *TTP1 + = dyn_cast<TemplateTemplateParmDecl>(D1)) { + if (TemplateTemplateParmDecl *TTP2 + = dyn_cast<TemplateTemplateParmDecl>(D2)) { + if (!::IsStructurallyEquivalent(*this, TTP1, TTP2)) + Equivalent = false; + } else { + // Kind mismatch. + Equivalent = false; + } + } + + if (!Equivalent) { + // Note that these two declarations are not equivalent (and we already + // know about it). + NonEquivalentDecls.insert(std::make_pair(D1->getCanonicalDecl(), + D2->getCanonicalDecl())); + return true; + } + // FIXME: Check other declaration kinds! + } + + return false; +} + +//---------------------------------------------------------------------------- +// Import Types +//---------------------------------------------------------------------------- + +QualType ASTNodeImporter::VisitType(const Type *T) { + Importer.FromDiag(SourceLocation(), diag::err_unsupported_ast_node) + << T->getTypeClassName(); + return QualType(); +} + +QualType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) { + switch (T->getKind()) { +#define SHARED_SINGLETON_TYPE(Expansion) +#define BUILTIN_TYPE(Id, SingletonId) \ + case BuiltinType::Id: return Importer.getToContext().SingletonId; +#include "clang/AST/BuiltinTypes.def" + + // FIXME: for Char16, Char32, and NullPtr, make sure that the "to" + // context supports C++. + + // FIXME: for ObjCId, ObjCClass, and ObjCSel, make sure that the "to" + // context supports ObjC. + + 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().getLangOpts().CharIsSigned) + return Importer.getToContext().UnsignedCharTy; + + return Importer.getToContext().CharTy; + + 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().getLangOpts().CharIsSigned) + return Importer.getToContext().SignedCharTy; + + return Importer.getToContext().CharTy; + + case BuiltinType::WChar_S: + case BuiltinType::WChar_U: + // FIXME: If not in C++, shall we translate to the C equivalent of + // wchar_t? + return Importer.getToContext().WCharTy; + } + + llvm_unreachable("Invalid BuiltinType Kind!"); +} + +QualType ASTNodeImporter::VisitComplexType(const ComplexType *T) { + QualType ToElementType = Importer.Import(T->getElementType()); + if (ToElementType.isNull()) + return QualType(); + + return Importer.getToContext().getComplexType(ToElementType); +} + +QualType ASTNodeImporter::VisitPointerType(const PointerType *T) { + QualType ToPointeeType = Importer.Import(T->getPointeeType()); + if (ToPointeeType.isNull()) + return QualType(); + + return Importer.getToContext().getPointerType(ToPointeeType); +} + +QualType ASTNodeImporter::VisitBlockPointerType(const 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(const 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(const 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(const 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(const 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(const 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(const 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(const VectorType *T) { + QualType ToElementType = Importer.Import(T->getElementType()); + if (ToElementType.isNull()) + return QualType(); + + return Importer.getToContext().getVectorType(ToElementType, + T->getNumElements(), + T->getVectorKind()); +} + +QualType ASTNodeImporter::VisitExtVectorType(const ExtVectorType *T) { + QualType ToElementType = Importer.Import(T->getElementType()); + if (ToElementType.isNull()) + return QualType(); + + return Importer.getToContext().getExtVectorType(ToElementType, + T->getNumElements()); +} + +QualType +ASTNodeImporter::VisitFunctionNoProtoType(const 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->getExtInfo()); +} + +QualType ASTNodeImporter::VisitFunctionProtoType(const FunctionProtoType *T) { + QualType ToResultType = Importer.Import(T->getResultType()); + if (ToResultType.isNull()) + return QualType(); + + // Import argument types + 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 + 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); + } + + FunctionProtoType::ExtProtoInfo EPI = T->getExtProtoInfo(); + EPI.Exceptions = ExceptionTypes.data(); + + return Importer.getToContext().getFunctionType(ToResultType, ArgTypes.data(), + ArgTypes.size(), EPI); +} + +QualType ASTNodeImporter::VisitParenType(const ParenType *T) { + QualType ToInnerType = Importer.Import(T->getInnerType()); + if (ToInnerType.isNull()) + return QualType(); + + return Importer.getToContext().getParenType(ToInnerType); +} + +QualType ASTNodeImporter::VisitTypedefType(const TypedefType *T) { + TypedefNameDecl *ToDecl + = dyn_cast_or_null<TypedefNameDecl>(Importer.Import(T->getDecl())); + if (!ToDecl) + return QualType(); + + return Importer.getToContext().getTypeDeclType(ToDecl); +} + +QualType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) { + Expr *ToExpr = Importer.Import(T->getUnderlyingExpr()); + if (!ToExpr) + return QualType(); + + return Importer.getToContext().getTypeOfExprType(ToExpr); +} + +QualType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) { + QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType()); + if (ToUnderlyingType.isNull()) + return QualType(); + + return Importer.getToContext().getTypeOfType(ToUnderlyingType); +} + +QualType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) { + // FIXME: Make sure that the "to" context supports C++0x! + Expr *ToExpr = Importer.Import(T->getUnderlyingExpr()); + if (!ToExpr) + return QualType(); + + QualType UnderlyingType = Importer.Import(T->getUnderlyingType()); + if (UnderlyingType.isNull()) + return QualType(); + + return Importer.getToContext().getDecltypeType(ToExpr, UnderlyingType); +} + +QualType ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) { + QualType ToBaseType = Importer.Import(T->getBaseType()); + QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType()); + if (ToBaseType.isNull() || ToUnderlyingType.isNull()) + return QualType(); + + return Importer.getToContext().getUnaryTransformType(ToBaseType, + ToUnderlyingType, + T->getUTTKind()); +} + +QualType ASTNodeImporter::VisitAutoType(const AutoType *T) { + // FIXME: Make sure that the "to" context supports C++0x! + QualType FromDeduced = T->getDeducedType(); + QualType ToDeduced; + if (!FromDeduced.isNull()) { + ToDeduced = Importer.Import(FromDeduced); + if (ToDeduced.isNull()) + return QualType(); + } + + return Importer.getToContext().getAutoType(ToDeduced); +} + +QualType ASTNodeImporter::VisitRecordType(const 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(const EnumType *T) { + EnumDecl *ToDecl + = dyn_cast_or_null<EnumDecl>(Importer.Import(T->getDecl())); + if (!ToDecl) + return QualType(); + + return Importer.getToContext().getTagDeclType(ToDecl); +} + +QualType ASTNodeImporter::VisitTemplateSpecializationType( + const TemplateSpecializationType *T) { + TemplateName ToTemplate = Importer.Import(T->getTemplateName()); + if (ToTemplate.isNull()) + return QualType(); + + SmallVector<TemplateArgument, 2> ToTemplateArgs; + if (ImportTemplateArguments(T->getArgs(), T->getNumArgs(), ToTemplateArgs)) + return QualType(); + + QualType ToCanonType; + if (!QualType(T, 0).isCanonical()) { + QualType FromCanonType + = Importer.getFromContext().getCanonicalType(QualType(T, 0)); + ToCanonType =Importer.Import(FromCanonType); + if (ToCanonType.isNull()) + return QualType(); + } + return Importer.getToContext().getTemplateSpecializationType(ToTemplate, + ToTemplateArgs.data(), + ToTemplateArgs.size(), + ToCanonType); +} + +QualType ASTNodeImporter::VisitElaboratedType(const ElaboratedType *T) { + NestedNameSpecifier *ToQualifier = 0; + // Note: the qualifier in an ElaboratedType is optional. + if (T->getQualifier()) { + ToQualifier = Importer.Import(T->getQualifier()); + if (!ToQualifier) + return QualType(); + } + + QualType ToNamedType = Importer.Import(T->getNamedType()); + if (ToNamedType.isNull()) + return QualType(); + + return Importer.getToContext().getElaboratedType(T->getKeyword(), + ToQualifier, ToNamedType); +} + +QualType ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) { + ObjCInterfaceDecl *Class + = dyn_cast_or_null<ObjCInterfaceDecl>(Importer.Import(T->getDecl())); + if (!Class) + return QualType(); + + return Importer.getToContext().getObjCInterfaceType(Class); +} + +QualType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) { + QualType ToBaseType = Importer.Import(T->getBaseType()); + if (ToBaseType.isNull()) + return QualType(); + + SmallVector<ObjCProtocolDecl *, 4> Protocols; + for (ObjCObjectType::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().getObjCObjectType(ToBaseType, + Protocols.data(), + Protocols.size()); +} + +QualType +ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) { + QualType ToPointeeType = Importer.Import(T->getPointeeType()); + if (ToPointeeType.isNull()) + return QualType(); + + return Importer.getToContext().getObjCObjectPointerType(ToPointeeType); +} + +//---------------------------------------------------------------------------- +// Import Declarations +//---------------------------------------------------------------------------- +bool ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclContext *&DC, + DeclContext *&LexicalDC, + DeclarationName &Name, + SourceLocation &Loc) { + // Import the context of this declaration. + DC = Importer.ImportContext(D->getDeclContext()); + if (!DC) + return true; + + LexicalDC = DC; + if (D->getDeclContext() != D->getLexicalDeclContext()) { + LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); + if (!LexicalDC) + return true; + } + + // Import the name of this declaration. + Name = Importer.Import(D->getDeclName()); + if (D->getDeclName() && !Name) + return true; + + // Import the location of this declaration. + Loc = Importer.Import(D->getLocation()); + return false; +} + +void ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) { + if (!FromD) + return; + + if (!ToD) { + ToD = Importer.Import(FromD); + if (!ToD) + return; + } + + if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(FromD)) { + if (RecordDecl *ToRecord = cast_or_null<RecordDecl>(ToD)) { + if (FromRecord->getDefinition() && !ToRecord->getDefinition()) { + ImportDefinition(FromRecord, ToRecord); + } + } + return; + } + + if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(FromD)) { + if (EnumDecl *ToEnum = cast_or_null<EnumDecl>(ToD)) { + if (FromEnum->getDefinition() && !ToEnum->getDefinition()) { + ImportDefinition(FromEnum, ToEnum); + } + } + return; + } +} + +void +ASTNodeImporter::ImportDeclarationNameLoc(const DeclarationNameInfo &From, + DeclarationNameInfo& To) { + // NOTE: To.Name and To.Loc are already imported. + // We only have to import To.LocInfo. + switch (To.getName().getNameKind()) { + case DeclarationName::Identifier: + case DeclarationName::ObjCZeroArgSelector: + case DeclarationName::ObjCOneArgSelector: + case DeclarationName::ObjCMultiArgSelector: + case DeclarationName::CXXUsingDirective: + return; + + case DeclarationName::CXXOperatorName: { + SourceRange Range = From.getCXXOperatorNameRange(); + To.setCXXOperatorNameRange(Importer.Import(Range)); + return; + } + case DeclarationName::CXXLiteralOperatorName: { + SourceLocation Loc = From.getCXXLiteralOperatorNameLoc(); + To.setCXXLiteralOperatorNameLoc(Importer.Import(Loc)); + return; + } + case DeclarationName::CXXConstructorName: + case DeclarationName::CXXDestructorName: + case DeclarationName::CXXConversionFunctionName: { + TypeSourceInfo *FromTInfo = From.getNamedTypeInfo(); + To.setNamedTypeInfo(Importer.Import(FromTInfo)); + return; + } + } + llvm_unreachable("Unknown name kind."); +} + +void ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) { + if (Importer.isMinimalImport() && !ForceImport) { + Importer.ImportContext(FromDC); + return; + } + + for (DeclContext::decl_iterator From = FromDC->decls_begin(), + FromEnd = FromDC->decls_end(); + From != FromEnd; + ++From) + Importer.Import(*From); +} + +bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To, + ImportDefinitionKind Kind) { + if (To->getDefinition() || To->isBeingDefined()) { + if (Kind == IDK_Everything) + ImportDeclContext(From, /*ForceImport=*/true); + + return false; + } + + To->startDefinition(); + + // Add base classes. + if (CXXRecordDecl *ToCXX = dyn_cast<CXXRecordDecl>(To)) { + CXXRecordDecl *FromCXX = cast<CXXRecordDecl>(From); + + struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data(); + struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data(); + ToData.UserDeclaredConstructor = FromData.UserDeclaredConstructor; + ToData.UserDeclaredCopyConstructor = FromData.UserDeclaredCopyConstructor; + ToData.UserDeclaredMoveConstructor = FromData.UserDeclaredMoveConstructor; + ToData.UserDeclaredCopyAssignment = FromData.UserDeclaredCopyAssignment; + ToData.UserDeclaredMoveAssignment = FromData.UserDeclaredMoveAssignment; + ToData.UserDeclaredDestructor = FromData.UserDeclaredDestructor; + ToData.Aggregate = FromData.Aggregate; + ToData.PlainOldData = FromData.PlainOldData; + ToData.Empty = FromData.Empty; + ToData.Polymorphic = FromData.Polymorphic; + ToData.Abstract = FromData.Abstract; + ToData.IsStandardLayout = FromData.IsStandardLayout; + ToData.HasNoNonEmptyBases = FromData.HasNoNonEmptyBases; + ToData.HasPrivateFields = FromData.HasPrivateFields; + ToData.HasProtectedFields = FromData.HasProtectedFields; + ToData.HasPublicFields = FromData.HasPublicFields; + ToData.HasMutableFields = FromData.HasMutableFields; + ToData.HasOnlyCMembers = FromData.HasOnlyCMembers; + ToData.HasTrivialDefaultConstructor = FromData.HasTrivialDefaultConstructor; + ToData.HasConstexprNonCopyMoveConstructor + = FromData.HasConstexprNonCopyMoveConstructor; + ToData.DefaultedDefaultConstructorIsConstexpr + = FromData.DefaultedDefaultConstructorIsConstexpr; + ToData.DefaultedCopyConstructorIsConstexpr + = FromData.DefaultedCopyConstructorIsConstexpr; + ToData.DefaultedMoveConstructorIsConstexpr + = FromData.DefaultedMoveConstructorIsConstexpr; + ToData.HasConstexprDefaultConstructor + = FromData.HasConstexprDefaultConstructor; + ToData.HasConstexprCopyConstructor = FromData.HasConstexprCopyConstructor; + ToData.HasConstexprMoveConstructor = FromData.HasConstexprMoveConstructor; + ToData.HasTrivialCopyConstructor = FromData.HasTrivialCopyConstructor; + ToData.HasTrivialMoveConstructor = FromData.HasTrivialMoveConstructor; + ToData.HasTrivialCopyAssignment = FromData.HasTrivialCopyAssignment; + ToData.HasTrivialMoveAssignment = FromData.HasTrivialMoveAssignment; + ToData.HasTrivialDestructor = FromData.HasTrivialDestructor; + ToData.HasIrrelevantDestructor = FromData.HasIrrelevantDestructor; + ToData.HasNonLiteralTypeFieldsOrBases + = FromData.HasNonLiteralTypeFieldsOrBases; + // ComputedVisibleConversions not imported. + ToData.UserProvidedDefaultConstructor + = FromData.UserProvidedDefaultConstructor; + ToData.DeclaredDefaultConstructor = FromData.DeclaredDefaultConstructor; + ToData.DeclaredCopyConstructor = FromData.DeclaredCopyConstructor; + ToData.DeclaredMoveConstructor = FromData.DeclaredMoveConstructor; + ToData.DeclaredCopyAssignment = FromData.DeclaredCopyAssignment; + ToData.DeclaredMoveAssignment = FromData.DeclaredMoveAssignment; + ToData.DeclaredDestructor = FromData.DeclaredDestructor; + ToData.FailedImplicitMoveConstructor + = FromData.FailedImplicitMoveConstructor; + ToData.FailedImplicitMoveAssignment = FromData.FailedImplicitMoveAssignment; + ToData.IsLambda = FromData.IsLambda; + + SmallVector<CXXBaseSpecifier *, 4> Bases; + for (CXXRecordDecl::base_class_iterator + Base1 = FromCXX->bases_begin(), + FromBaseEnd = FromCXX->bases_end(); + Base1 != FromBaseEnd; + ++Base1) { + QualType T = Importer.Import(Base1->getType()); + if (T.isNull()) + return true; + + SourceLocation EllipsisLoc; + if (Base1->isPackExpansion()) + EllipsisLoc = Importer.Import(Base1->getEllipsisLoc()); + + // Ensure that we have a definition for the base. + ImportDefinitionIfNeeded(Base1->getType()->getAsCXXRecordDecl()); + + Bases.push_back( + new (Importer.getToContext()) + CXXBaseSpecifier(Importer.Import(Base1->getSourceRange()), + Base1->isVirtual(), + Base1->isBaseOfClass(), + Base1->getAccessSpecifierAsWritten(), + Importer.Import(Base1->getTypeSourceInfo()), + EllipsisLoc)); + } + if (!Bases.empty()) + ToCXX->setBases(Bases.data(), Bases.size()); + } + + if (shouldForceImportDeclContext(Kind)) + ImportDeclContext(From, /*ForceImport=*/true); + + To->completeDefinition(); + return false; +} + +bool ASTNodeImporter::ImportDefinition(EnumDecl *From, EnumDecl *To, + ImportDefinitionKind Kind) { + if (To->getDefinition() || To->isBeingDefined()) { + if (Kind == IDK_Everything) + ImportDeclContext(From, /*ForceImport=*/true); + return false; + } + + To->startDefinition(); + + QualType T = Importer.Import(Importer.getFromContext().getTypeDeclType(From)); + if (T.isNull()) + return true; + + QualType ToPromotionType = Importer.Import(From->getPromotionType()); + if (ToPromotionType.isNull()) + return true; + + if (shouldForceImportDeclContext(Kind)) + ImportDeclContext(From, /*ForceImport=*/true); + + // FIXME: we might need to merge the number of positive or negative bits + // if the enumerator lists don't match. + To->completeDefinition(T, ToPromotionType, + From->getNumPositiveBits(), + From->getNumNegativeBits()); + return false; +} + +TemplateParameterList *ASTNodeImporter::ImportTemplateParameterList( + TemplateParameterList *Params) { + SmallVector<NamedDecl *, 4> ToParams; + ToParams.reserve(Params->size()); + for (TemplateParameterList::iterator P = Params->begin(), + PEnd = Params->end(); + P != PEnd; ++P) { + Decl *To = Importer.Import(*P); + if (!To) + return 0; + + ToParams.push_back(cast<NamedDecl>(To)); + } + + return TemplateParameterList::Create(Importer.getToContext(), + Importer.Import(Params->getTemplateLoc()), + Importer.Import(Params->getLAngleLoc()), + ToParams.data(), ToParams.size(), + Importer.Import(Params->getRAngleLoc())); +} + +TemplateArgument +ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) { + switch (From.getKind()) { + case TemplateArgument::Null: + return TemplateArgument(); + + case TemplateArgument::Type: { + QualType ToType = Importer.Import(From.getAsType()); + if (ToType.isNull()) + return TemplateArgument(); + return TemplateArgument(ToType); + } + + case TemplateArgument::Integral: { + QualType ToType = Importer.Import(From.getIntegralType()); + if (ToType.isNull()) + return TemplateArgument(); + return TemplateArgument(*From.getAsIntegral(), ToType); + } + + case TemplateArgument::Declaration: + if (Decl *To = Importer.Import(From.getAsDecl())) + return TemplateArgument(To); + return TemplateArgument(); + + case TemplateArgument::Template: { + TemplateName ToTemplate = Importer.Import(From.getAsTemplate()); + if (ToTemplate.isNull()) + return TemplateArgument(); + + return TemplateArgument(ToTemplate); + } + + case TemplateArgument::TemplateExpansion: { + TemplateName ToTemplate + = Importer.Import(From.getAsTemplateOrTemplatePattern()); + if (ToTemplate.isNull()) + return TemplateArgument(); + + return TemplateArgument(ToTemplate, From.getNumTemplateExpansions()); + } + + case TemplateArgument::Expression: + if (Expr *ToExpr = Importer.Import(From.getAsExpr())) + return TemplateArgument(ToExpr); + return TemplateArgument(); + + case TemplateArgument::Pack: { + SmallVector<TemplateArgument, 2> ToPack; + ToPack.reserve(From.pack_size()); + if (ImportTemplateArguments(From.pack_begin(), From.pack_size(), ToPack)) + return TemplateArgument(); + + TemplateArgument *ToArgs + = new (Importer.getToContext()) TemplateArgument[ToPack.size()]; + std::copy(ToPack.begin(), ToPack.end(), ToArgs); + return TemplateArgument(ToArgs, ToPack.size()); + } + } + + llvm_unreachable("Invalid template argument kind"); +} + +bool ASTNodeImporter::ImportTemplateArguments(const TemplateArgument *FromArgs, + unsigned NumFromArgs, + SmallVectorImpl<TemplateArgument> &ToArgs) { + for (unsigned I = 0; I != NumFromArgs; ++I) { + TemplateArgument To = ImportTemplateArgument(FromArgs[I]); + if (To.isNull() && !FromArgs[I].isNull()) + return true; + + ToArgs.push_back(To); + } + + return false; +} + +bool ASTNodeImporter::IsStructuralMatch(RecordDecl *FromRecord, + RecordDecl *ToRecord) { + StructuralEquivalenceContext Ctx(Importer.getFromContext(), + Importer.getToContext(), + Importer.getNonEquivalentDecls()); + return Ctx.IsStructurallyEquivalent(FromRecord, ToRecord); +} + +bool ASTNodeImporter::IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToEnum) { + StructuralEquivalenceContext Ctx(Importer.getFromContext(), + Importer.getToContext(), + Importer.getNonEquivalentDecls()); + return Ctx.IsStructurallyEquivalent(FromEnum, ToEnum); +} + +bool ASTNodeImporter::IsStructuralMatch(ClassTemplateDecl *From, + ClassTemplateDecl *To) { + StructuralEquivalenceContext Ctx(Importer.getFromContext(), + Importer.getToContext(), + Importer.getNonEquivalentDecls()); + return Ctx.IsStructurallyEquivalent(From, To); +} + +Decl *ASTNodeImporter::VisitDecl(Decl *D) { + Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node) + << D->getDeclKindName(); + return 0; +} + +Decl *ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { + TranslationUnitDecl *ToD = + Importer.getToContext().getTranslationUnitDecl(); + + Importer.Imported(D, ToD); + + return ToD; +} + +Decl *ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) { + // Import the major distinguishing characteristics of this namespace. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + NamespaceDecl *MergeWithNamespace = 0; + if (!Name) { + // This is an anonymous namespace. Adopt an existing anonymous + // namespace if we can. + // FIXME: Not testable. + if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC)) + MergeWithNamespace = TU->getAnonymousNamespace(); + else + MergeWithNamespace = cast<NamespaceDecl>(DC)->getAnonymousNamespace(); + } else { + SmallVector<NamedDecl *, 4> ConflictingDecls; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Namespace)) + continue; + + if (NamespaceDecl *FoundNS = dyn_cast<NamespaceDecl>(FoundDecls[I])) { + MergeWithNamespace = FoundNS; + ConflictingDecls.clear(); + break; + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Namespace, + ConflictingDecls.data(), + ConflictingDecls.size()); + } + } + + // Create the "to" namespace, if needed. + NamespaceDecl *ToNamespace = MergeWithNamespace; + if (!ToNamespace) { + ToNamespace = NamespaceDecl::Create(Importer.getToContext(), DC, + D->isInline(), + Importer.Import(D->getLocStart()), + Loc, Name.getAsIdentifierInfo(), + /*PrevDecl=*/0); + ToNamespace->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(ToNamespace); + + // If this is an anonymous namespace, register it as the anonymous + // namespace within its context. + if (!Name) { + if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC)) + TU->setAnonymousNamespace(ToNamespace); + else + cast<NamespaceDecl>(DC)->setAnonymousNamespace(ToNamespace); + } + } + Importer.Imported(D, ToNamespace); + + ImportDeclContext(D); + + return ToNamespace; +} + +Decl *ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) { + // Import the major distinguishing characteristics of this typedef. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // If this typedef is not in block scope, determine whether we've + // seen a typedef with the same name (that we can merge with) or any + // other entity by that name (which name lookup could conflict with). + if (!DC->isFunctionOrMethod()) { + SmallVector<NamedDecl *, 4> ConflictingDecls; + unsigned IDNS = Decl::IDNS_Ordinary; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) + continue; + if (TypedefNameDecl *FoundTypedef = + dyn_cast<TypedefNameDecl>(FoundDecls[I])) { + if (Importer.IsStructurallyEquivalent(D->getUnderlyingType(), + FoundTypedef->getUnderlyingType())) + return Importer.Imported(D, FoundTypedef); + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, IDNS, + ConflictingDecls.data(), + ConflictingDecls.size()); + if (!Name) + return 0; + } + } + + // Import the underlying type of this typedef; + QualType T = Importer.Import(D->getUnderlyingType()); + if (T.isNull()) + return 0; + + // Create the new typedef node. + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + SourceLocation StartL = Importer.Import(D->getLocStart()); + TypedefNameDecl *ToTypedef; + if (IsAlias) + ToTypedef = TypeAliasDecl::Create(Importer.getToContext(), DC, + StartL, Loc, + Name.getAsIdentifierInfo(), + TInfo); + else + ToTypedef = TypedefDecl::Create(Importer.getToContext(), DC, + StartL, Loc, + Name.getAsIdentifierInfo(), + TInfo); + + ToTypedef->setAccess(D->getAccess()); + ToTypedef->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToTypedef); + LexicalDC->addDeclInternal(ToTypedef); + + return ToTypedef; +} + +Decl *ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) { + return VisitTypedefNameDecl(D, /*IsAlias=*/false); +} + +Decl *ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) { + return VisitTypedefNameDecl(D, /*IsAlias=*/true); +} + +Decl *ASTNodeImporter::VisitEnumDecl(EnumDecl *D) { + // Import the major distinguishing characteristics of this enum. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Figure out what enum name we're looking for. + unsigned IDNS = Decl::IDNS_Tag; + DeclarationName SearchName = Name; + if (!SearchName && D->getTypedefNameForAnonDecl()) { + SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName()); + IDNS = Decl::IDNS_Ordinary; + } else if (Importer.getToContext().getLangOpts().CPlusPlus) + IDNS |= Decl::IDNS_Ordinary; + + // We may already have an enum of the same name; try to find and match it. + if (!DC->isFunctionOrMethod() && SearchName) { + SmallVector<NamedDecl *, 4> ConflictingDecls; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(SearchName, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) + continue; + + Decl *Found = FoundDecls[I]; + if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) { + if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>()) + Found = Tag->getDecl(); + } + + if (EnumDecl *FoundEnum = dyn_cast<EnumDecl>(Found)) { + if (IsStructuralMatch(D, FoundEnum)) + return Importer.Imported(D, FoundEnum); + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, IDNS, + ConflictingDecls.data(), + ConflictingDecls.size()); + } + } + + // Create the enum declaration. + EnumDecl *D2 = EnumDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getLocStart()), + Loc, Name.getAsIdentifierInfo(), 0, + D->isScoped(), D->isScopedUsingClassTag(), + D->isFixed()); + // Import the qualifier, if any. + D2->setQualifierInfo(Importer.Import(D->getQualifierLoc())); + D2->setAccess(D->getAccess()); + D2->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, D2); + LexicalDC->addDeclInternal(D2); + + // Import the integer type. + QualType ToIntegerType = Importer.Import(D->getIntegerType()); + if (ToIntegerType.isNull()) + return 0; + D2->setIntegerType(ToIntegerType); + + // Import the definition + if (D->isCompleteDefinition() && ImportDefinition(D, D2)) + return 0; + + return D2; +} + +Decl *ASTNodeImporter::VisitRecordDecl(RecordDecl *D) { + // If this record has a definition in the translation unit we're coming from, + // but this particular declaration is not that definition, import the + // definition and map to that. + TagDecl *Definition = D->getDefinition(); + if (Definition && Definition != D) { + Decl *ImportedDef = Importer.Import(Definition); + if (!ImportedDef) + return 0; + + return Importer.Imported(D, ImportedDef); + } + + // Import the major distinguishing characteristics of this record. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Figure out what structure name we're looking for. + unsigned IDNS = Decl::IDNS_Tag; + DeclarationName SearchName = Name; + if (!SearchName && D->getTypedefNameForAnonDecl()) { + SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName()); + IDNS = Decl::IDNS_Ordinary; + } else if (Importer.getToContext().getLangOpts().CPlusPlus) + IDNS |= Decl::IDNS_Ordinary; + + // We may already have a record of the same name; try to find and match it. + RecordDecl *AdoptDecl = 0; + if (!DC->isFunctionOrMethod() && SearchName) { + SmallVector<NamedDecl *, 4> ConflictingDecls; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(SearchName, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) + continue; + + Decl *Found = FoundDecls[I]; + if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) { + if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>()) + Found = Tag->getDecl(); + } + + if (RecordDecl *FoundRecord = dyn_cast<RecordDecl>(Found)) { + if (RecordDecl *FoundDef = FoundRecord->getDefinition()) { + if (!D->isCompleteDefinition() || IsStructuralMatch(D, FoundDef)) { + // The record types structurally match, or the "from" translation + // unit only had a forward declaration anyway; call it the same + // function. + // FIXME: For C++, we should also merge methods here. + return Importer.Imported(D, FoundDef); + } + } else { + // We have a forward declaration of this type, so adopt that forward + // declaration rather than building a new one. + AdoptDecl = FoundRecord; + continue; + } + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, IDNS, + ConflictingDecls.data(), + ConflictingDecls.size()); + } + } + + // Create the record declaration. + RecordDecl *D2 = AdoptDecl; + SourceLocation StartLoc = Importer.Import(D->getLocStart()); + if (!D2) { + if (isa<CXXRecordDecl>(D)) { + CXXRecordDecl *D2CXX = CXXRecordDecl::Create(Importer.getToContext(), + D->getTagKind(), + DC, StartLoc, Loc, + Name.getAsIdentifierInfo()); + D2 = D2CXX; + D2->setAccess(D->getAccess()); + } else { + D2 = RecordDecl::Create(Importer.getToContext(), D->getTagKind(), + DC, StartLoc, Loc, Name.getAsIdentifierInfo()); + } + + D2->setQualifierInfo(Importer.Import(D->getQualifierLoc())); + D2->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(D2); + } + + Importer.Imported(D, D2); + + if (D->isCompleteDefinition() && ImportDefinition(D, D2, IDK_Default)) + return 0; + + return D2; +} + +Decl *ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) { + // Import the major distinguishing characteristics of this enumerator. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + // Determine whether there are any other declarations with the same name and + // in the same context. + if (!LexicalDC->isFunctionOrMethod()) { + SmallVector<NamedDecl *, 4> ConflictingDecls; + unsigned IDNS = Decl::IDNS_Ordinary; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) + continue; + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, IDNS, + ConflictingDecls.data(), + ConflictingDecls.size()); + if (!Name) + return 0; + } + } + + Expr *Init = Importer.Import(D->getInitExpr()); + if (D->getInitExpr() && !Init) + return 0; + + EnumConstantDecl *ToEnumerator + = EnumConstantDecl::Create(Importer.getToContext(), cast<EnumDecl>(DC), Loc, + Name.getAsIdentifierInfo(), T, + Init, D->getInitVal()); + ToEnumerator->setAccess(D->getAccess()); + ToEnumerator->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToEnumerator); + LexicalDC->addDeclInternal(ToEnumerator); + return ToEnumerator; +} + +Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) { + // Import the major distinguishing characteristics of this function. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Try to find a function in our own ("to") context with the same name, same + // type, and in the same context as the function we're importing. + if (!LexicalDC->isFunctionOrMethod()) { + SmallVector<NamedDecl *, 4> ConflictingDecls; + unsigned IDNS = Decl::IDNS_Ordinary; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) + continue; + + if (FunctionDecl *FoundFunction = dyn_cast<FunctionDecl>(FoundDecls[I])) { + if (isExternalLinkage(FoundFunction->getLinkage()) && + isExternalLinkage(D->getLinkage())) { + if (Importer.IsStructurallyEquivalent(D->getType(), + FoundFunction->getType())) { + // FIXME: Actually try to merge the body and other attributes. + return Importer.Imported(D, FoundFunction); + } + + // FIXME: Check for overloading more carefully, e.g., by boosting + // Sema::IsOverload out to the AST library. + + // Function overloading is okay in C++. + if (Importer.getToContext().getLangOpts().CPlusPlus) + continue; + + // Complain about inconsistent function types. + Importer.ToDiag(Loc, diag::err_odr_function_type_inconsistent) + << Name << D->getType() << FoundFunction->getType(); + Importer.ToDiag(FoundFunction->getLocation(), + diag::note_odr_value_here) + << FoundFunction->getType(); + } + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, IDNS, + ConflictingDecls.data(), + ConflictingDecls.size()); + if (!Name) + return 0; + } + } + + DeclarationNameInfo NameInfo(Name, Loc); + // Import additional name location/type info. + ImportDeclarationNameLoc(D->getNameInfo(), NameInfo); + + // Import the type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + // Import the function parameters. + SmallVector<ParmVarDecl *, 8> Parameters; + for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); + P != PEnd; ++P) { + ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(*P)); + if (!ToP) + return 0; + + Parameters.push_back(ToP); + } + + // Create the imported function. + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + FunctionDecl *ToFunction = 0; + if (CXXConstructorDecl *FromConstructor = dyn_cast<CXXConstructorDecl>(D)) { + ToFunction = CXXConstructorDecl::Create(Importer.getToContext(), + cast<CXXRecordDecl>(DC), + D->getInnerLocStart(), + NameInfo, T, TInfo, + FromConstructor->isExplicit(), + D->isInlineSpecified(), + D->isImplicit(), + D->isConstexpr()); + } else if (isa<CXXDestructorDecl>(D)) { + ToFunction = CXXDestructorDecl::Create(Importer.getToContext(), + cast<CXXRecordDecl>(DC), + D->getInnerLocStart(), + NameInfo, T, TInfo, + D->isInlineSpecified(), + D->isImplicit()); + } else if (CXXConversionDecl *FromConversion + = dyn_cast<CXXConversionDecl>(D)) { + ToFunction = CXXConversionDecl::Create(Importer.getToContext(), + cast<CXXRecordDecl>(DC), + D->getInnerLocStart(), + NameInfo, T, TInfo, + D->isInlineSpecified(), + FromConversion->isExplicit(), + D->isConstexpr(), + Importer.Import(D->getLocEnd())); + } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { + ToFunction = CXXMethodDecl::Create(Importer.getToContext(), + cast<CXXRecordDecl>(DC), + D->getInnerLocStart(), + NameInfo, T, TInfo, + Method->isStatic(), + Method->getStorageClassAsWritten(), + Method->isInlineSpecified(), + D->isConstexpr(), + Importer.Import(D->getLocEnd())); + } else { + ToFunction = FunctionDecl::Create(Importer.getToContext(), DC, + D->getInnerLocStart(), + NameInfo, T, TInfo, D->getStorageClass(), + D->getStorageClassAsWritten(), + D->isInlineSpecified(), + D->hasWrittenPrototype(), + D->isConstexpr()); + } + + // Import the qualifier, if any. + ToFunction->setQualifierInfo(Importer.Import(D->getQualifierLoc())); + ToFunction->setAccess(D->getAccess()); + ToFunction->setLexicalDeclContext(LexicalDC); + ToFunction->setVirtualAsWritten(D->isVirtualAsWritten()); + ToFunction->setTrivial(D->isTrivial()); + ToFunction->setPure(D->isPure()); + Importer.Imported(D, ToFunction); + + // Set the parameters. + for (unsigned I = 0, N = Parameters.size(); I != N; ++I) { + Parameters[I]->setOwningFunction(ToFunction); + ToFunction->addDeclInternal(Parameters[I]); + } + ToFunction->setParams(Parameters); + + // FIXME: Other bits to merge? + + // Add this function to the lexical context. + LexicalDC->addDeclInternal(ToFunction); + + return ToFunction; +} + +Decl *ASTNodeImporter::VisitCXXMethodDecl(CXXMethodDecl *D) { + return VisitFunctionDecl(D); +} + +Decl *ASTNodeImporter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { + return VisitCXXMethodDecl(D); +} + +Decl *ASTNodeImporter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { + return VisitCXXMethodDecl(D); +} + +Decl *ASTNodeImporter::VisitCXXConversionDecl(CXXConversionDecl *D) { + return VisitCXXMethodDecl(D); +} + +Decl *ASTNodeImporter::VisitFieldDecl(FieldDecl *D) { + // Import the major distinguishing characteristics of a variable. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Determine whether we've already imported this field. + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (FieldDecl *FoundField = dyn_cast<FieldDecl>(FoundDecls[I])) { + if (Importer.IsStructurallyEquivalent(D->getType(), + FoundField->getType())) { + Importer.Imported(D, FoundField); + return FoundField; + } + + Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent) + << Name << D->getType() << FoundField->getType(); + Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here) + << FoundField->getType(); + return 0; + } + } + + // Import the type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + Expr *BitWidth = Importer.Import(D->getBitWidth()); + if (!BitWidth && D->getBitWidth()) + return 0; + + FieldDecl *ToField = FieldDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getInnerLocStart()), + Loc, Name.getAsIdentifierInfo(), + T, TInfo, BitWidth, D->isMutable(), + D->hasInClassInitializer()); + ToField->setAccess(D->getAccess()); + ToField->setLexicalDeclContext(LexicalDC); + if (ToField->hasInClassInitializer()) + ToField->setInClassInitializer(D->getInClassInitializer()); + Importer.Imported(D, ToField); + LexicalDC->addDeclInternal(ToField); + return ToField; +} + +Decl *ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { + // Import the major distinguishing characteristics of a variable. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Determine whether we've already imported this field. + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (IndirectFieldDecl *FoundField + = dyn_cast<IndirectFieldDecl>(FoundDecls[I])) { + if (Importer.IsStructurallyEquivalent(D->getType(), + FoundField->getType())) { + Importer.Imported(D, FoundField); + return FoundField; + } + + Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent) + << Name << D->getType() << FoundField->getType(); + Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here) + << FoundField->getType(); + return 0; + } + } + + // Import the type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + NamedDecl **NamedChain = + new (Importer.getToContext())NamedDecl*[D->getChainingSize()]; + + unsigned i = 0; + for (IndirectFieldDecl::chain_iterator PI = D->chain_begin(), + PE = D->chain_end(); PI != PE; ++PI) { + Decl* D = Importer.Import(*PI); + if (!D) + return 0; + NamedChain[i++] = cast<NamedDecl>(D); + } + + IndirectFieldDecl *ToIndirectField = IndirectFieldDecl::Create( + Importer.getToContext(), DC, + Loc, Name.getAsIdentifierInfo(), T, + NamedChain, D->getChainingSize()); + ToIndirectField->setAccess(D->getAccess()); + ToIndirectField->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToIndirectField); + LexicalDC->addDeclInternal(ToIndirectField); + return ToIndirectField; +} + +Decl *ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) { + // Import the major distinguishing characteristics of an ivar. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Determine whether we've already imported this ivar + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (ObjCIvarDecl *FoundIvar = dyn_cast<ObjCIvarDecl>(FoundDecls[I])) { + if (Importer.IsStructurallyEquivalent(D->getType(), + FoundIvar->getType())) { + Importer.Imported(D, FoundIvar); + return FoundIvar; + } + + Importer.ToDiag(Loc, diag::err_odr_ivar_type_inconsistent) + << Name << D->getType() << FoundIvar->getType(); + Importer.ToDiag(FoundIvar->getLocation(), diag::note_odr_value_here) + << FoundIvar->getType(); + return 0; + } + } + + // Import the type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + Expr *BitWidth = Importer.Import(D->getBitWidth()); + if (!BitWidth && D->getBitWidth()) + return 0; + + ObjCIvarDecl *ToIvar = ObjCIvarDecl::Create(Importer.getToContext(), + cast<ObjCContainerDecl>(DC), + Importer.Import(D->getInnerLocStart()), + Loc, Name.getAsIdentifierInfo(), + T, TInfo, D->getAccessControl(), + BitWidth, D->getSynthesize()); + ToIvar->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToIvar); + LexicalDC->addDeclInternal(ToIvar); + return ToIvar; + +} + +Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) { + // Import the major distinguishing characteristics of a variable. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // 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; + SmallVector<NamedDecl *, 4> ConflictingDecls; + unsigned IDNS = Decl::IDNS_Ordinary; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) + continue; + + if (VarDecl *FoundVar = dyn_cast<VarDecl>(FoundDecls[I])) { + // We have found a variable that we may need to merge with. Check it. + if (isExternalLinkage(FoundVar->getLinkage()) && + isExternalLinkage(D->getLinkage())) { + if (Importer.IsStructurallyEquivalent(D->getType(), + FoundVar->getType())) { + MergeWithVar = FoundVar; + break; + } + + const ArrayType *FoundArray + = Importer.getToContext().getAsArrayType(FoundVar->getType()); + const ArrayType *TArray + = Importer.getToContext().getAsArrayType(D->getType()); + if (FoundArray && TArray) { + if (isa<IncompleteArrayType>(FoundArray) && + isa<ConstantArrayType>(TArray)) { + // Import the type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + FoundVar->setType(T); + MergeWithVar = FoundVar; + break; + } else if (isa<IncompleteArrayType>(TArray) && + isa<ConstantArrayType>(FoundArray)) { + MergeWithVar = FoundVar; + break; + } + } + + Importer.ToDiag(Loc, diag::err_odr_variable_type_inconsistent) + << Name << D->getType() << FoundVar->getType(); + Importer.ToDiag(FoundVar->getLocation(), diag::note_odr_value_here) + << FoundVar->getType(); + } + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (MergeWithVar) { + // An equivalent variable with external linkage has been found. Link + // the two declarations, then merge them. + Importer.Imported(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(Init); + if (DDef->isInitKnownICE()) { + EvaluatedStmt *Eval = MergeWithVar->ensureEvaluatedStmt(); + Eval->CheckedICE = true; + Eval->IsICE = DDef->isInitICE(); + } + } + } + + return MergeWithVar; + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, IDNS, + ConflictingDecls.data(), + ConflictingDecls.size()); + if (!Name) + return 0; + } + } + + // Import the type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + // Create the imported variable. + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + VarDecl *ToVar = VarDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getInnerLocStart()), + Loc, Name.getAsIdentifierInfo(), + T, TInfo, + D->getStorageClass(), + D->getStorageClassAsWritten()); + ToVar->setQualifierInfo(Importer.Import(D->getQualifierLoc())); + ToVar->setAccess(D->getAccess()); + ToVar->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToVar); + LexicalDC->addDeclInternal(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.Import(const_cast<Expr *>(D->getAnyInitializer()))); + + // FIXME: Other bits to merge? + + return ToVar; +} + +Decl *ASTNodeImporter::VisitImplicitParamDecl(ImplicitParamDecl *D) { + // Parameters are created in the translation unit's context, then moved + // into the function declaration's context afterward. + DeclContext *DC = Importer.getToContext().getTranslationUnitDecl(); + + // Import the name of this declaration. + DeclarationName Name = Importer.Import(D->getDeclName()); + if (D->getDeclName() && !Name) + return 0; + + // Import the location of this declaration. + SourceLocation Loc = Importer.Import(D->getLocation()); + + // Import the parameter's type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + // Create the imported parameter. + ImplicitParamDecl *ToParm + = ImplicitParamDecl::Create(Importer.getToContext(), DC, + Loc, Name.getAsIdentifierInfo(), + T); + return Importer.Imported(D, ToParm); +} + +Decl *ASTNodeImporter::VisitParmVarDecl(ParmVarDecl *D) { + // Parameters are created in the translation unit's context, then moved + // into the function declaration's context afterward. + DeclContext *DC = Importer.getToContext().getTranslationUnitDecl(); + + // Import the name of this declaration. + DeclarationName Name = Importer.Import(D->getDeclName()); + if (D->getDeclName() && !Name) + return 0; + + // Import the location of this declaration. + SourceLocation Loc = Importer.Import(D->getLocation()); + + // Import the parameter's type. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + // Create the imported parameter. + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + ParmVarDecl *ToParm = ParmVarDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getInnerLocStart()), + Loc, Name.getAsIdentifierInfo(), + T, TInfo, D->getStorageClass(), + D->getStorageClassAsWritten(), + /*FIXME: Default argument*/ 0); + ToParm->setHasInheritedDefaultArg(D->hasInheritedDefaultArg()); + return Importer.Imported(D, ToParm); +} + +Decl *ASTNodeImporter::VisitObjCMethodDecl(ObjCMethodDecl *D) { + // Import the major distinguishing characteristics of a method. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (ObjCMethodDecl *FoundMethod = dyn_cast<ObjCMethodDecl>(FoundDecls[I])) { + if (FoundMethod->isInstanceMethod() != D->isInstanceMethod()) + continue; + + // Check return types. + if (!Importer.IsStructurallyEquivalent(D->getResultType(), + FoundMethod->getResultType())) { + Importer.ToDiag(Loc, diag::err_odr_objc_method_result_type_inconsistent) + << D->isInstanceMethod() << Name + << D->getResultType() << FoundMethod->getResultType(); + Importer.ToDiag(FoundMethod->getLocation(), + diag::note_odr_objc_method_here) + << D->isInstanceMethod() << Name; + return 0; + } + + // Check the number of parameters. + if (D->param_size() != FoundMethod->param_size()) { + Importer.ToDiag(Loc, diag::err_odr_objc_method_num_params_inconsistent) + << D->isInstanceMethod() << Name + << D->param_size() << FoundMethod->param_size(); + Importer.ToDiag(FoundMethod->getLocation(), + diag::note_odr_objc_method_here) + << D->isInstanceMethod() << Name; + return 0; + } + + // Check parameter types. + for (ObjCMethodDecl::param_iterator P = D->param_begin(), + PEnd = D->param_end(), FoundP = FoundMethod->param_begin(); + P != PEnd; ++P, ++FoundP) { + if (!Importer.IsStructurallyEquivalent((*P)->getType(), + (*FoundP)->getType())) { + Importer.FromDiag((*P)->getLocation(), + diag::err_odr_objc_method_param_type_inconsistent) + << D->isInstanceMethod() << Name + << (*P)->getType() << (*FoundP)->getType(); + Importer.ToDiag((*FoundP)->getLocation(), diag::note_odr_value_here) + << (*FoundP)->getType(); + return 0; + } + } + + // Check variadic/non-variadic. + // Check the number of parameters. + if (D->isVariadic() != FoundMethod->isVariadic()) { + Importer.ToDiag(Loc, diag::err_odr_objc_method_variadic_inconsistent) + << D->isInstanceMethod() << Name; + Importer.ToDiag(FoundMethod->getLocation(), + diag::note_odr_objc_method_here) + << D->isInstanceMethod() << Name; + return 0; + } + + // FIXME: Any other bits we need to merge? + return Importer.Imported(D, FoundMethod); + } + } + + // Import the result type. + QualType ResultTy = Importer.Import(D->getResultType()); + if (ResultTy.isNull()) + return 0; + + TypeSourceInfo *ResultTInfo = Importer.Import(D->getResultTypeSourceInfo()); + + ObjCMethodDecl *ToMethod + = ObjCMethodDecl::Create(Importer.getToContext(), + Loc, + Importer.Import(D->getLocEnd()), + Name.getObjCSelector(), + ResultTy, ResultTInfo, DC, + D->isInstanceMethod(), + D->isVariadic(), + D->isSynthesized(), + D->isImplicit(), + D->isDefined(), + D->getImplementationControl(), + D->hasRelatedResultType()); + + // FIXME: When we decide to merge method definitions, we'll need to + // deal with implicit parameters. + + // Import the parameters + SmallVector<ParmVarDecl *, 5> ToParams; + for (ObjCMethodDecl::param_iterator FromP = D->param_begin(), + FromPEnd = D->param_end(); + FromP != FromPEnd; + ++FromP) { + ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(*FromP)); + if (!ToP) + return 0; + + ToParams.push_back(ToP); + } + + // Set the parameters. + for (unsigned I = 0, N = ToParams.size(); I != N; ++I) { + ToParams[I]->setOwningFunction(ToMethod); + ToMethod->addDeclInternal(ToParams[I]); + } + SmallVector<SourceLocation, 12> SelLocs; + D->getSelectorLocs(SelLocs); + ToMethod->setMethodParams(Importer.getToContext(), ToParams, SelLocs); + + ToMethod->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToMethod); + LexicalDC->addDeclInternal(ToMethod); + return ToMethod; +} + +Decl *ASTNodeImporter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { + // Import the major distinguishing characteristics of a category. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + ObjCInterfaceDecl *ToInterface + = cast_or_null<ObjCInterfaceDecl>(Importer.Import(D->getClassInterface())); + if (!ToInterface) + return 0; + + // Determine if we've already encountered this category. + ObjCCategoryDecl *MergeWithCategory + = ToInterface->FindCategoryDeclaration(Name.getAsIdentifierInfo()); + ObjCCategoryDecl *ToCategory = MergeWithCategory; + if (!ToCategory) { + ToCategory = ObjCCategoryDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getAtStartLoc()), + Loc, + Importer.Import(D->getCategoryNameLoc()), + Name.getAsIdentifierInfo(), + ToInterface, + Importer.Import(D->getIvarLBraceLoc()), + Importer.Import(D->getIvarRBraceLoc())); + ToCategory->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(ToCategory); + Importer.Imported(D, ToCategory); + + // Import protocols + SmallVector<ObjCProtocolDecl *, 4> Protocols; + SmallVector<SourceLocation, 4> ProtocolLocs; + ObjCCategoryDecl::protocol_loc_iterator FromProtoLoc + = D->protocol_loc_begin(); + for (ObjCCategoryDecl::protocol_iterator FromProto = D->protocol_begin(), + FromProtoEnd = D->protocol_end(); + FromProto != FromProtoEnd; + ++FromProto, ++FromProtoLoc) { + ObjCProtocolDecl *ToProto + = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto)); + if (!ToProto) + return 0; + Protocols.push_back(ToProto); + ProtocolLocs.push_back(Importer.Import(*FromProtoLoc)); + } + + // FIXME: If we're merging, make sure that the protocol list is the same. + ToCategory->setProtocolList(Protocols.data(), Protocols.size(), + ProtocolLocs.data(), Importer.getToContext()); + + } else { + Importer.Imported(D, ToCategory); + } + + // Import all of the members of this category. + ImportDeclContext(D); + + // If we have an implementation, import it as well. + if (D->getImplementation()) { + ObjCCategoryImplDecl *Impl + = cast_or_null<ObjCCategoryImplDecl>( + Importer.Import(D->getImplementation())); + if (!Impl) + return 0; + + ToCategory->setImplementation(Impl); + } + + return ToCategory; +} + +bool ASTNodeImporter::ImportDefinition(ObjCProtocolDecl *From, + ObjCProtocolDecl *To, + ImportDefinitionKind Kind) { + if (To->getDefinition()) { + if (shouldForceImportDeclContext(Kind)) + ImportDeclContext(From); + return false; + } + + // Start the protocol definition + To->startDefinition(); + + // Import protocols + SmallVector<ObjCProtocolDecl *, 4> Protocols; + SmallVector<SourceLocation, 4> ProtocolLocs; + ObjCProtocolDecl::protocol_loc_iterator + FromProtoLoc = From->protocol_loc_begin(); + for (ObjCProtocolDecl::protocol_iterator FromProto = From->protocol_begin(), + FromProtoEnd = From->protocol_end(); + FromProto != FromProtoEnd; + ++FromProto, ++FromProtoLoc) { + ObjCProtocolDecl *ToProto + = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto)); + if (!ToProto) + return true; + Protocols.push_back(ToProto); + ProtocolLocs.push_back(Importer.Import(*FromProtoLoc)); + } + + // FIXME: If we're merging, make sure that the protocol list is the same. + To->setProtocolList(Protocols.data(), Protocols.size(), + ProtocolLocs.data(), Importer.getToContext()); + + if (shouldForceImportDeclContext(Kind)) { + // Import all of the members of this protocol. + ImportDeclContext(From, /*ForceImport=*/true); + } + return false; +} + +Decl *ASTNodeImporter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { + // If this protocol has a definition in the translation unit we're coming + // from, but this particular declaration is not that definition, import the + // definition and map to that. + ObjCProtocolDecl *Definition = D->getDefinition(); + if (Definition && Definition != D) { + Decl *ImportedDef = Importer.Import(Definition); + if (!ImportedDef) + return 0; + + return Importer.Imported(D, ImportedDef); + } + + // Import the major distinguishing characteristics of a protocol. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + ObjCProtocolDecl *MergeWithProtocol = 0; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_ObjCProtocol)) + continue; + + if ((MergeWithProtocol = dyn_cast<ObjCProtocolDecl>(FoundDecls[I]))) + break; + } + + ObjCProtocolDecl *ToProto = MergeWithProtocol; + if (!ToProto) { + ToProto = ObjCProtocolDecl::Create(Importer.getToContext(), DC, + Name.getAsIdentifierInfo(), Loc, + Importer.Import(D->getAtStartLoc()), + /*PrevDecl=*/0); + ToProto->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(ToProto); + } + + Importer.Imported(D, ToProto); + + if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToProto)) + return 0; + + return ToProto; +} + +bool ASTNodeImporter::ImportDefinition(ObjCInterfaceDecl *From, + ObjCInterfaceDecl *To, + ImportDefinitionKind Kind) { + if (To->getDefinition()) { + // Check consistency of superclass. + ObjCInterfaceDecl *FromSuper = From->getSuperClass(); + if (FromSuper) { + FromSuper = cast_or_null<ObjCInterfaceDecl>(Importer.Import(FromSuper)); + if (!FromSuper) + return true; + } + + ObjCInterfaceDecl *ToSuper = To->getSuperClass(); + if ((bool)FromSuper != (bool)ToSuper || + (FromSuper && !declaresSameEntity(FromSuper, ToSuper))) { + Importer.ToDiag(To->getLocation(), + diag::err_odr_objc_superclass_inconsistent) + << To->getDeclName(); + if (ToSuper) + Importer.ToDiag(To->getSuperClassLoc(), diag::note_odr_objc_superclass) + << To->getSuperClass()->getDeclName(); + else + Importer.ToDiag(To->getLocation(), + diag::note_odr_objc_missing_superclass); + if (From->getSuperClass()) + Importer.FromDiag(From->getSuperClassLoc(), + diag::note_odr_objc_superclass) + << From->getSuperClass()->getDeclName(); + else + Importer.FromDiag(From->getLocation(), + diag::note_odr_objc_missing_superclass); + } + + if (shouldForceImportDeclContext(Kind)) + ImportDeclContext(From); + return false; + } + + // Start the definition. + To->startDefinition(); + + // If this class has a superclass, import it. + if (From->getSuperClass()) { + ObjCInterfaceDecl *Super = cast_or_null<ObjCInterfaceDecl>( + Importer.Import(From->getSuperClass())); + if (!Super) + return true; + + To->setSuperClass(Super); + To->setSuperClassLoc(Importer.Import(From->getSuperClassLoc())); + } + + // Import protocols + SmallVector<ObjCProtocolDecl *, 4> Protocols; + SmallVector<SourceLocation, 4> ProtocolLocs; + ObjCInterfaceDecl::protocol_loc_iterator + FromProtoLoc = From->protocol_loc_begin(); + + for (ObjCInterfaceDecl::protocol_iterator FromProto = From->protocol_begin(), + FromProtoEnd = From->protocol_end(); + FromProto != FromProtoEnd; + ++FromProto, ++FromProtoLoc) { + ObjCProtocolDecl *ToProto + = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto)); + if (!ToProto) + return true; + Protocols.push_back(ToProto); + ProtocolLocs.push_back(Importer.Import(*FromProtoLoc)); + } + + // FIXME: If we're merging, make sure that the protocol list is the same. + To->setProtocolList(Protocols.data(), Protocols.size(), + ProtocolLocs.data(), Importer.getToContext()); + + // Import categories. When the categories themselves are imported, they'll + // hook themselves into this interface. + for (ObjCCategoryDecl *FromCat = From->getCategoryList(); FromCat; + FromCat = FromCat->getNextClassCategory()) + Importer.Import(FromCat); + + // If we have an @implementation, import it as well. + if (From->getImplementation()) { + ObjCImplementationDecl *Impl = cast_or_null<ObjCImplementationDecl>( + Importer.Import(From->getImplementation())); + if (!Impl) + return true; + + To->setImplementation(Impl); + } + + if (shouldForceImportDeclContext(Kind)) { + // Import all of the members of this class. + ImportDeclContext(From, /*ForceImport=*/true); + } + return false; +} + +Decl *ASTNodeImporter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { + // If this class has a definition in the translation unit we're coming from, + // but this particular declaration is not that definition, import the + // definition and map to that. + ObjCInterfaceDecl *Definition = D->getDefinition(); + if (Definition && Definition != D) { + Decl *ImportedDef = Importer.Import(Definition); + if (!ImportedDef) + return 0; + + return Importer.Imported(D, ImportedDef); + } + + // Import the major distinguishing characteristics of an @interface. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Look for an existing interface with the same name. + ObjCInterfaceDecl *MergeWithIface = 0; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary)) + continue; + + if ((MergeWithIface = dyn_cast<ObjCInterfaceDecl>(FoundDecls[I]))) + break; + } + + // Create an interface declaration, if one does not already exist. + ObjCInterfaceDecl *ToIface = MergeWithIface; + if (!ToIface) { + ToIface = ObjCInterfaceDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getAtStartLoc()), + Name.getAsIdentifierInfo(), + /*PrevDecl=*/0,Loc, + D->isImplicitInterfaceDecl()); + ToIface->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(ToIface); + } + Importer.Imported(D, ToIface); + + if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToIface)) + return 0; + + return ToIface; +} + +Decl *ASTNodeImporter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { + ObjCCategoryDecl *Category = cast_or_null<ObjCCategoryDecl>( + Importer.Import(D->getCategoryDecl())); + if (!Category) + return 0; + + ObjCCategoryImplDecl *ToImpl = Category->getImplementation(); + if (!ToImpl) { + DeclContext *DC = Importer.ImportContext(D->getDeclContext()); + if (!DC) + return 0; + + SourceLocation CategoryNameLoc = Importer.Import(D->getCategoryNameLoc()); + ToImpl = ObjCCategoryImplDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getIdentifier()), + Category->getClassInterface(), + Importer.Import(D->getLocation()), + Importer.Import(D->getAtStartLoc()), + CategoryNameLoc); + + DeclContext *LexicalDC = DC; + if (D->getDeclContext() != D->getLexicalDeclContext()) { + LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); + if (!LexicalDC) + return 0; + + ToImpl->setLexicalDeclContext(LexicalDC); + } + + LexicalDC->addDeclInternal(ToImpl); + Category->setImplementation(ToImpl); + } + + Importer.Imported(D, ToImpl); + ImportDeclContext(D); + return ToImpl; +} + +Decl *ASTNodeImporter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { + // Find the corresponding interface. + ObjCInterfaceDecl *Iface = cast_or_null<ObjCInterfaceDecl>( + Importer.Import(D->getClassInterface())); + if (!Iface) + return 0; + + // Import the superclass, if any. + ObjCInterfaceDecl *Super = 0; + if (D->getSuperClass()) { + Super = cast_or_null<ObjCInterfaceDecl>( + Importer.Import(D->getSuperClass())); + if (!Super) + return 0; + } + + ObjCImplementationDecl *Impl = Iface->getImplementation(); + if (!Impl) { + // We haven't imported an implementation yet. Create a new @implementation + // now. + Impl = ObjCImplementationDecl::Create(Importer.getToContext(), + Importer.ImportContext(D->getDeclContext()), + Iface, Super, + Importer.Import(D->getLocation()), + Importer.Import(D->getAtStartLoc()), + Importer.Import(D->getIvarLBraceLoc()), + Importer.Import(D->getIvarRBraceLoc())); + + if (D->getDeclContext() != D->getLexicalDeclContext()) { + DeclContext *LexicalDC + = Importer.ImportContext(D->getLexicalDeclContext()); + if (!LexicalDC) + return 0; + Impl->setLexicalDeclContext(LexicalDC); + } + + // Associate the implementation with the class it implements. + Iface->setImplementation(Impl); + Importer.Imported(D, Iface->getImplementation()); + } else { + Importer.Imported(D, Iface->getImplementation()); + + // Verify that the existing @implementation has the same superclass. + if ((Super && !Impl->getSuperClass()) || + (!Super && Impl->getSuperClass()) || + (Super && Impl->getSuperClass() && + !declaresSameEntity(Super->getCanonicalDecl(), Impl->getSuperClass()))) { + Importer.ToDiag(Impl->getLocation(), + diag::err_odr_objc_superclass_inconsistent) + << Iface->getDeclName(); + // FIXME: It would be nice to have the location of the superclass + // below. + if (Impl->getSuperClass()) + Importer.ToDiag(Impl->getLocation(), + diag::note_odr_objc_superclass) + << Impl->getSuperClass()->getDeclName(); + else + Importer.ToDiag(Impl->getLocation(), + diag::note_odr_objc_missing_superclass); + if (D->getSuperClass()) + Importer.FromDiag(D->getLocation(), + diag::note_odr_objc_superclass) + << D->getSuperClass()->getDeclName(); + else + Importer.FromDiag(D->getLocation(), + diag::note_odr_objc_missing_superclass); + return 0; + } + } + + // Import all of the members of this @implementation. + ImportDeclContext(D); + + return Impl; +} + +Decl *ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { + // Import the major distinguishing characteristics of an @property. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // Check whether we have already imported this property. + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (ObjCPropertyDecl *FoundProp + = dyn_cast<ObjCPropertyDecl>(FoundDecls[I])) { + // Check property types. + if (!Importer.IsStructurallyEquivalent(D->getType(), + FoundProp->getType())) { + Importer.ToDiag(Loc, diag::err_odr_objc_property_type_inconsistent) + << Name << D->getType() << FoundProp->getType(); + Importer.ToDiag(FoundProp->getLocation(), diag::note_odr_value_here) + << FoundProp->getType(); + return 0; + } + + // FIXME: Check property attributes, getters, setters, etc.? + + // Consider these properties to be equivalent. + Importer.Imported(D, FoundProp); + return FoundProp; + } + } + + // Import the type. + TypeSourceInfo *T = Importer.Import(D->getTypeSourceInfo()); + if (!T) + return 0; + + // Create the new property. + ObjCPropertyDecl *ToProperty + = ObjCPropertyDecl::Create(Importer.getToContext(), DC, Loc, + Name.getAsIdentifierInfo(), + Importer.Import(D->getAtLoc()), + Importer.Import(D->getLParenLoc()), + T, + D->getPropertyImplementation()); + Importer.Imported(D, ToProperty); + ToProperty->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(ToProperty); + + ToProperty->setPropertyAttributes(D->getPropertyAttributes()); + ToProperty->setPropertyAttributesAsWritten( + D->getPropertyAttributesAsWritten()); + ToProperty->setGetterName(Importer.Import(D->getGetterName())); + ToProperty->setSetterName(Importer.Import(D->getSetterName())); + ToProperty->setGetterMethodDecl( + cast_or_null<ObjCMethodDecl>(Importer.Import(D->getGetterMethodDecl()))); + ToProperty->setSetterMethodDecl( + cast_or_null<ObjCMethodDecl>(Importer.Import(D->getSetterMethodDecl()))); + ToProperty->setPropertyIvarDecl( + cast_or_null<ObjCIvarDecl>(Importer.Import(D->getPropertyIvarDecl()))); + return ToProperty; +} + +Decl *ASTNodeImporter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { + ObjCPropertyDecl *Property = cast_or_null<ObjCPropertyDecl>( + Importer.Import(D->getPropertyDecl())); + if (!Property) + return 0; + + DeclContext *DC = Importer.ImportContext(D->getDeclContext()); + if (!DC) + return 0; + + // Import the lexical declaration context. + DeclContext *LexicalDC = DC; + if (D->getDeclContext() != D->getLexicalDeclContext()) { + LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); + if (!LexicalDC) + return 0; + } + + ObjCImplDecl *InImpl = dyn_cast<ObjCImplDecl>(LexicalDC); + if (!InImpl) + return 0; + + // Import the ivar (for an @synthesize). + ObjCIvarDecl *Ivar = 0; + if (D->getPropertyIvarDecl()) { + Ivar = cast_or_null<ObjCIvarDecl>( + Importer.Import(D->getPropertyIvarDecl())); + if (!Ivar) + return 0; + } + + ObjCPropertyImplDecl *ToImpl + = InImpl->FindPropertyImplDecl(Property->getIdentifier()); + if (!ToImpl) { + ToImpl = ObjCPropertyImplDecl::Create(Importer.getToContext(), DC, + Importer.Import(D->getLocStart()), + Importer.Import(D->getLocation()), + Property, + D->getPropertyImplementation(), + Ivar, + Importer.Import(D->getPropertyIvarDeclLoc())); + ToImpl->setLexicalDeclContext(LexicalDC); + Importer.Imported(D, ToImpl); + LexicalDC->addDeclInternal(ToImpl); + } else { + // Check that we have the same kind of property implementation (@synthesize + // vs. @dynamic). + if (D->getPropertyImplementation() != ToImpl->getPropertyImplementation()) { + Importer.ToDiag(ToImpl->getLocation(), + diag::err_odr_objc_property_impl_kind_inconsistent) + << Property->getDeclName() + << (ToImpl->getPropertyImplementation() + == ObjCPropertyImplDecl::Dynamic); + Importer.FromDiag(D->getLocation(), + diag::note_odr_objc_property_impl_kind) + << D->getPropertyDecl()->getDeclName() + << (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic); + return 0; + } + + // For @synthesize, check that we have the same + if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize && + Ivar != ToImpl->getPropertyIvarDecl()) { + Importer.ToDiag(ToImpl->getPropertyIvarDeclLoc(), + diag::err_odr_objc_synthesize_ivar_inconsistent) + << Property->getDeclName() + << ToImpl->getPropertyIvarDecl()->getDeclName() + << Ivar->getDeclName(); + Importer.FromDiag(D->getPropertyIvarDeclLoc(), + diag::note_odr_objc_synthesize_ivar_here) + << D->getPropertyIvarDecl()->getDeclName(); + return 0; + } + + // Merge the existing implementation with the new implementation. + Importer.Imported(D, ToImpl); + } + + return ToImpl; +} + +Decl *ASTNodeImporter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { + // For template arguments, we adopt the translation unit as our declaration + // context. This context will be fixed when the actual template declaration + // is created. + + // FIXME: Import default argument. + return TemplateTypeParmDecl::Create(Importer.getToContext(), + Importer.getToContext().getTranslationUnitDecl(), + Importer.Import(D->getLocStart()), + Importer.Import(D->getLocation()), + D->getDepth(), + D->getIndex(), + Importer.Import(D->getIdentifier()), + D->wasDeclaredWithTypename(), + D->isParameterPack()); +} + +Decl * +ASTNodeImporter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { + // Import the name of this declaration. + DeclarationName Name = Importer.Import(D->getDeclName()); + if (D->getDeclName() && !Name) + return 0; + + // Import the location of this declaration. + SourceLocation Loc = Importer.Import(D->getLocation()); + + // Import the type of this declaration. + QualType T = Importer.Import(D->getType()); + if (T.isNull()) + return 0; + + // Import type-source information. + TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); + if (D->getTypeSourceInfo() && !TInfo) + return 0; + + // FIXME: Import default argument. + + return NonTypeTemplateParmDecl::Create(Importer.getToContext(), + Importer.getToContext().getTranslationUnitDecl(), + Importer.Import(D->getInnerLocStart()), + Loc, D->getDepth(), D->getPosition(), + Name.getAsIdentifierInfo(), + T, D->isParameterPack(), TInfo); +} + +Decl * +ASTNodeImporter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { + // Import the name of this declaration. + DeclarationName Name = Importer.Import(D->getDeclName()); + if (D->getDeclName() && !Name) + return 0; + + // Import the location of this declaration. + SourceLocation Loc = Importer.Import(D->getLocation()); + + // Import template parameters. + TemplateParameterList *TemplateParams + = ImportTemplateParameterList(D->getTemplateParameters()); + if (!TemplateParams) + return 0; + + // FIXME: Import default argument. + + return TemplateTemplateParmDecl::Create(Importer.getToContext(), + Importer.getToContext().getTranslationUnitDecl(), + Loc, D->getDepth(), D->getPosition(), + D->isParameterPack(), + Name.getAsIdentifierInfo(), + TemplateParams); +} + +Decl *ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) { + // If this record has a definition in the translation unit we're coming from, + // but this particular declaration is not that definition, import the + // definition and map to that. + CXXRecordDecl *Definition + = cast_or_null<CXXRecordDecl>(D->getTemplatedDecl()->getDefinition()); + if (Definition && Definition != D->getTemplatedDecl()) { + Decl *ImportedDef + = Importer.Import(Definition->getDescribedClassTemplate()); + if (!ImportedDef) + return 0; + + return Importer.Imported(D, ImportedDef); + } + + // Import the major distinguishing characteristics of this class template. + DeclContext *DC, *LexicalDC; + DeclarationName Name; + SourceLocation Loc; + if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) + return 0; + + // We may already have a template of the same name; try to find and match it. + if (!DC->isFunctionOrMethod()) { + SmallVector<NamedDecl *, 4> ConflictingDecls; + llvm::SmallVector<NamedDecl *, 2> FoundDecls; + DC->localUncachedLookup(Name, FoundDecls); + for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { + if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary)) + continue; + + Decl *Found = FoundDecls[I]; + if (ClassTemplateDecl *FoundTemplate + = dyn_cast<ClassTemplateDecl>(Found)) { + if (IsStructuralMatch(D, FoundTemplate)) { + // The class templates structurally match; call it the same template. + // FIXME: We may be filling in a forward declaration here. Handle + // this case! + Importer.Imported(D->getTemplatedDecl(), + FoundTemplate->getTemplatedDecl()); + return Importer.Imported(D, FoundTemplate); + } + } + + ConflictingDecls.push_back(FoundDecls[I]); + } + + if (!ConflictingDecls.empty()) { + Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary, + ConflictingDecls.data(), + ConflictingDecls.size()); + } + + if (!Name) + return 0; + } + + CXXRecordDecl *DTemplated = D->getTemplatedDecl(); + + // Create the declaration that is being templated. + SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart()); + SourceLocation IdLoc = Importer.Import(DTemplated->getLocation()); + CXXRecordDecl *D2Templated = CXXRecordDecl::Create(Importer.getToContext(), + DTemplated->getTagKind(), + DC, StartLoc, IdLoc, + Name.getAsIdentifierInfo()); + D2Templated->setAccess(DTemplated->getAccess()); + D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc())); + D2Templated->setLexicalDeclContext(LexicalDC); + + // Create the class template declaration itself. + TemplateParameterList *TemplateParams + = ImportTemplateParameterList(D->getTemplateParameters()); + if (!TemplateParams) + return 0; + + ClassTemplateDecl *D2 = ClassTemplateDecl::Create(Importer.getToContext(), DC, + Loc, Name, TemplateParams, + D2Templated, + /*PrevDecl=*/0); + D2Templated->setDescribedClassTemplate(D2); + + D2->setAccess(D->getAccess()); + D2->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(D2); + + // Note the relationship between the class templates. + Importer.Imported(D, D2); + Importer.Imported(DTemplated, D2Templated); + + if (DTemplated->isCompleteDefinition() && + !D2Templated->isCompleteDefinition()) { + // FIXME: Import definition! + } + + return D2; +} + +Decl *ASTNodeImporter::VisitClassTemplateSpecializationDecl( + ClassTemplateSpecializationDecl *D) { + // If this record has a definition in the translation unit we're coming from, + // but this particular declaration is not that definition, import the + // definition and map to that. + TagDecl *Definition = D->getDefinition(); + if (Definition && Definition != D) { + Decl *ImportedDef = Importer.Import(Definition); + if (!ImportedDef) + return 0; + + return Importer.Imported(D, ImportedDef); + } + + ClassTemplateDecl *ClassTemplate + = cast_or_null<ClassTemplateDecl>(Importer.Import( + D->getSpecializedTemplate())); + if (!ClassTemplate) + return 0; + + // Import the context of this declaration. + DeclContext *DC = ClassTemplate->getDeclContext(); + if (!DC) + return 0; + + DeclContext *LexicalDC = DC; + if (D->getDeclContext() != D->getLexicalDeclContext()) { + LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); + if (!LexicalDC) + return 0; + } + + // Import the location of this declaration. + SourceLocation StartLoc = Importer.Import(D->getLocStart()); + SourceLocation IdLoc = Importer.Import(D->getLocation()); + + // Import template arguments. + SmallVector<TemplateArgument, 2> TemplateArgs; + if (ImportTemplateArguments(D->getTemplateArgs().data(), + D->getTemplateArgs().size(), + TemplateArgs)) + return 0; + + // Try to find an existing specialization with these template arguments. + void *InsertPos = 0; + ClassTemplateSpecializationDecl *D2 + = ClassTemplate->findSpecialization(TemplateArgs.data(), + TemplateArgs.size(), InsertPos); + if (D2) { + // We already have a class template specialization with these template + // arguments. + + // FIXME: Check for specialization vs. instantiation errors. + + if (RecordDecl *FoundDef = D2->getDefinition()) { + if (!D->isCompleteDefinition() || IsStructuralMatch(D, FoundDef)) { + // The record types structurally match, or the "from" translation + // unit only had a forward declaration anyway; call it the same + // function. + return Importer.Imported(D, FoundDef); + } + } + } else { + // Create a new specialization. + D2 = ClassTemplateSpecializationDecl::Create(Importer.getToContext(), + D->getTagKind(), DC, + StartLoc, IdLoc, + ClassTemplate, + TemplateArgs.data(), + TemplateArgs.size(), + /*PrevDecl=*/0); + D2->setSpecializationKind(D->getSpecializationKind()); + + // Add this specialization to the class template. + ClassTemplate->AddSpecialization(D2, InsertPos); + + // Import the qualifier, if any. + D2->setQualifierInfo(Importer.Import(D->getQualifierLoc())); + + // Add the specialization to this context. + D2->setLexicalDeclContext(LexicalDC); + LexicalDC->addDeclInternal(D2); + } + Importer.Imported(D, D2); + + if (D->isCompleteDefinition() && ImportDefinition(D, D2)) + return 0; + + return D2; +} + +//---------------------------------------------------------------------------- +// Import Statements +//---------------------------------------------------------------------------- + +Stmt *ASTNodeImporter::VisitStmt(Stmt *S) { + Importer.FromDiag(S->getLocStart(), diag::err_unsupported_ast_node) + << S->getStmtClassName(); + return 0; +} + +//---------------------------------------------------------------------------- +// Import Expressions +//---------------------------------------------------------------------------- +Expr *ASTNodeImporter::VisitExpr(Expr *E) { + Importer.FromDiag(E->getLocStart(), diag::err_unsupported_ast_node) + << E->getStmtClassName(); + return 0; +} + +Expr *ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) { + ValueDecl *ToD = cast_or_null<ValueDecl>(Importer.Import(E->getDecl())); + if (!ToD) + return 0; + + NamedDecl *FoundD = 0; + if (E->getDecl() != E->getFoundDecl()) { + FoundD = cast_or_null<NamedDecl>(Importer.Import(E->getFoundDecl())); + if (!FoundD) + return 0; + } + + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + DeclRefExpr *DRE = DeclRefExpr::Create(Importer.getToContext(), + Importer.Import(E->getQualifierLoc()), + Importer.Import(E->getTemplateKeywordLoc()), + ToD, + E->refersToEnclosingLocal(), + Importer.Import(E->getLocation()), + T, E->getValueKind(), + FoundD, + /*FIXME:TemplateArgs=*/0); + if (E->hadMultipleCandidates()) + DRE->setHadMultipleCandidates(true); + return DRE; +} + +Expr *ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + return IntegerLiteral::Create(Importer.getToContext(), + E->getValue(), T, + Importer.Import(E->getLocation())); +} + +Expr *ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + return new (Importer.getToContext()) CharacterLiteral(E->getValue(), + E->getKind(), T, + Importer.Import(E->getLocation())); +} + +Expr *ASTNodeImporter::VisitParenExpr(ParenExpr *E) { + Expr *SubExpr = Importer.Import(E->getSubExpr()); + if (!SubExpr) + return 0; + + return new (Importer.getToContext()) + ParenExpr(Importer.Import(E->getLParen()), + Importer.Import(E->getRParen()), + SubExpr); +} + +Expr *ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + Expr *SubExpr = Importer.Import(E->getSubExpr()); + if (!SubExpr) + return 0; + + return new (Importer.getToContext()) UnaryOperator(SubExpr, E->getOpcode(), + T, E->getValueKind(), + E->getObjectKind(), + Importer.Import(E->getOperatorLoc())); +} + +Expr *ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr( + UnaryExprOrTypeTraitExpr *E) { + QualType ResultType = Importer.Import(E->getType()); + + if (E->isArgumentType()) { + TypeSourceInfo *TInfo = Importer.Import(E->getArgumentTypeInfo()); + if (!TInfo) + return 0; + + return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(), + TInfo, ResultType, + Importer.Import(E->getOperatorLoc()), + Importer.Import(E->getRParenLoc())); + } + + Expr *SubExpr = Importer.Import(E->getArgumentExpr()); + if (!SubExpr) + return 0; + + return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(), + SubExpr, ResultType, + Importer.Import(E->getOperatorLoc()), + Importer.Import(E->getRParenLoc())); +} + +Expr *ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + Expr *LHS = Importer.Import(E->getLHS()); + if (!LHS) + return 0; + + Expr *RHS = Importer.Import(E->getRHS()); + if (!RHS) + return 0; + + return new (Importer.getToContext()) BinaryOperator(LHS, RHS, E->getOpcode(), + T, E->getValueKind(), + E->getObjectKind(), + Importer.Import(E->getOperatorLoc())); +} + +Expr *ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + QualType CompLHSType = Importer.Import(E->getComputationLHSType()); + if (CompLHSType.isNull()) + return 0; + + QualType CompResultType = Importer.Import(E->getComputationResultType()); + if (CompResultType.isNull()) + return 0; + + Expr *LHS = Importer.Import(E->getLHS()); + if (!LHS) + return 0; + + Expr *RHS = Importer.Import(E->getRHS()); + if (!RHS) + return 0; + + return new (Importer.getToContext()) + CompoundAssignOperator(LHS, RHS, E->getOpcode(), + T, E->getValueKind(), + E->getObjectKind(), + CompLHSType, CompResultType, + Importer.Import(E->getOperatorLoc())); +} + +static bool ImportCastPath(CastExpr *E, CXXCastPath &Path) { + if (E->path_empty()) return false; + + // TODO: import cast paths + return true; +} + +Expr *ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + Expr *SubExpr = Importer.Import(E->getSubExpr()); + if (!SubExpr) + return 0; + + CXXCastPath BasePath; + if (ImportCastPath(E, BasePath)) + return 0; + + return ImplicitCastExpr::Create(Importer.getToContext(), T, E->getCastKind(), + SubExpr, &BasePath, E->getValueKind()); +} + +Expr *ASTNodeImporter::VisitCStyleCastExpr(CStyleCastExpr *E) { + QualType T = Importer.Import(E->getType()); + if (T.isNull()) + return 0; + + Expr *SubExpr = Importer.Import(E->getSubExpr()); + if (!SubExpr) + return 0; + + TypeSourceInfo *TInfo = Importer.Import(E->getTypeInfoAsWritten()); + if (!TInfo && E->getTypeInfoAsWritten()) + return 0; + + CXXCastPath BasePath; + if (ImportCastPath(E, BasePath)) + return 0; + + return CStyleCastExpr::Create(Importer.getToContext(), T, + E->getValueKind(), E->getCastKind(), + SubExpr, &BasePath, TInfo, + Importer.Import(E->getLParenLoc()), + Importer.Import(E->getRParenLoc())); +} + +ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager, + ASTContext &FromContext, FileManager &FromFileManager, + bool MinimalImport) + : ToContext(ToContext), FromContext(FromContext), + ToFileManager(ToFileManager), FromFileManager(FromFileManager), + Minimal(MinimalImport) +{ + ImportedDecls[FromContext.getTranslationUnitDecl()] + = ToContext.getTranslationUnitDecl(); +} + +ASTImporter::~ASTImporter() { } + +QualType ASTImporter::Import(QualType FromT) { + if (FromT.isNull()) + return QualType(); + + const Type *fromTy = FromT.getTypePtr(); + + // Check whether we've already imported this type. + llvm::DenseMap<const Type *, const Type *>::iterator Pos + = ImportedTypes.find(fromTy); + if (Pos != ImportedTypes.end()) + return ToContext.getQualifiedType(Pos->second, FromT.getLocalQualifiers()); + + // Import the type + ASTNodeImporter Importer(*this); + QualType ToT = Importer.Visit(fromTy); + if (ToT.isNull()) + return ToT; + + // Record the imported type. + ImportedTypes[fromTy] = ToT.getTypePtr(); + + return ToContext.getQualifiedType(ToT, FromT.getLocalQualifiers()); +} + +TypeSourceInfo *ASTImporter::Import(TypeSourceInfo *FromTSI) { + if (!FromTSI) + return FromTSI; + + // FIXME: For now we just create a "trivial" type source info based + // on the type and a single location. Implement a real version of this. + QualType T = Import(FromTSI->getType()); + if (T.isNull()) + return 0; + + return ToContext.getTrivialTypeSourceInfo(T, + FromTSI->getTypeLoc().getLocStart()); +} + +Decl *ASTImporter::Import(Decl *FromD) { + if (!FromD) + return 0; + + ASTNodeImporter Importer(*this); + + // Check whether we've already imported this declaration. + llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD); + if (Pos != ImportedDecls.end()) { + Decl *ToD = Pos->second; + Importer.ImportDefinitionIfNeeded(FromD, ToD); + return ToD; + } + + // Import the type + Decl *ToD = Importer.Visit(FromD); + if (!ToD) + return 0; + + // Record the imported declaration. + ImportedDecls[FromD] = ToD; + + if (TagDecl *FromTag = dyn_cast<TagDecl>(FromD)) { + // Keep track of anonymous tags that have an associated typedef. + if (FromTag->getTypedefNameForAnonDecl()) + AnonTagsWithPendingTypedefs.push_back(FromTag); + } else if (TypedefNameDecl *FromTypedef = dyn_cast<TypedefNameDecl>(FromD)) { + // When we've finished transforming a typedef, see whether it was the + // typedef for an anonymous tag. + for (SmallVector<TagDecl *, 4>::iterator + FromTag = AnonTagsWithPendingTypedefs.begin(), + FromTagEnd = AnonTagsWithPendingTypedefs.end(); + FromTag != FromTagEnd; ++FromTag) { + if ((*FromTag)->getTypedefNameForAnonDecl() == FromTypedef) { + if (TagDecl *ToTag = cast_or_null<TagDecl>(Import(*FromTag))) { + // We found the typedef for an anonymous tag; link them. + ToTag->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(ToD)); + AnonTagsWithPendingTypedefs.erase(FromTag); + break; + } + } + } + } + + return ToD; +} + +DeclContext *ASTImporter::ImportContext(DeclContext *FromDC) { + if (!FromDC) + return FromDC; + + DeclContext *ToDC = cast_or_null<DeclContext>(Import(cast<Decl>(FromDC))); + if (!ToDC) + return 0; + + // When we're using a record/enum/Objective-C class/protocol as a context, we + // need it to have a definition. + if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(ToDC)) { + RecordDecl *FromRecord = cast<RecordDecl>(FromDC); + if (ToRecord->isCompleteDefinition()) { + // Do nothing. + } else if (FromRecord->isCompleteDefinition()) { + ASTNodeImporter(*this).ImportDefinition(FromRecord, ToRecord, + ASTNodeImporter::IDK_Basic); + } else { + CompleteDecl(ToRecord); + } + } else if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(ToDC)) { + EnumDecl *FromEnum = cast<EnumDecl>(FromDC); + if (ToEnum->isCompleteDefinition()) { + // Do nothing. + } else if (FromEnum->isCompleteDefinition()) { + ASTNodeImporter(*this).ImportDefinition(FromEnum, ToEnum, + ASTNodeImporter::IDK_Basic); + } else { + CompleteDecl(ToEnum); + } + } else if (ObjCInterfaceDecl *ToClass = dyn_cast<ObjCInterfaceDecl>(ToDC)) { + ObjCInterfaceDecl *FromClass = cast<ObjCInterfaceDecl>(FromDC); + if (ToClass->getDefinition()) { + // Do nothing. + } else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) { + ASTNodeImporter(*this).ImportDefinition(FromDef, ToClass, + ASTNodeImporter::IDK_Basic); + } else { + CompleteDecl(ToClass); + } + } else if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(ToDC)) { + ObjCProtocolDecl *FromProto = cast<ObjCProtocolDecl>(FromDC); + if (ToProto->getDefinition()) { + // Do nothing. + } else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) { + ASTNodeImporter(*this).ImportDefinition(FromDef, ToProto, + ASTNodeImporter::IDK_Basic); + } else { + CompleteDecl(ToProto); + } + } + + return ToDC; +} + +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; + + // Check whether we've already imported this declaration. + llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(FromS); + if (Pos != ImportedStmts.end()) + return Pos->second; + + // Import the type + ASTNodeImporter Importer(*this); + Stmt *ToS = Importer.Visit(FromS); + if (!ToS) + return 0; + + // Record the imported declaration. + ImportedStmts[FromS] = ToS; + return ToS; +} + +NestedNameSpecifier *ASTImporter::Import(NestedNameSpecifier *FromNNS) { + if (!FromNNS) + return 0; + + NestedNameSpecifier *prefix = Import(FromNNS->getPrefix()); + + switch (FromNNS->getKind()) { + case NestedNameSpecifier::Identifier: + if (IdentifierInfo *II = Import(FromNNS->getAsIdentifier())) { + return NestedNameSpecifier::Create(ToContext, prefix, II); + } + return 0; + + case NestedNameSpecifier::Namespace: + if (NamespaceDecl *NS = + cast<NamespaceDecl>(Import(FromNNS->getAsNamespace()))) { + return NestedNameSpecifier::Create(ToContext, prefix, NS); + } + return 0; + + case NestedNameSpecifier::NamespaceAlias: + if (NamespaceAliasDecl *NSAD = + cast<NamespaceAliasDecl>(Import(FromNNS->getAsNamespaceAlias()))) { + return NestedNameSpecifier::Create(ToContext, prefix, NSAD); + } + return 0; + + case NestedNameSpecifier::Global: + return NestedNameSpecifier::GlobalSpecifier(ToContext); + + case NestedNameSpecifier::TypeSpec: + case NestedNameSpecifier::TypeSpecWithTemplate: { + QualType T = Import(QualType(FromNNS->getAsType(), 0u)); + if (!T.isNull()) { + bool bTemplate = FromNNS->getKind() == + NestedNameSpecifier::TypeSpecWithTemplate; + return NestedNameSpecifier::Create(ToContext, prefix, + bTemplate, T.getTypePtr()); + } + } + return 0; + } + + llvm_unreachable("Invalid nested name specifier kind"); +} + +NestedNameSpecifierLoc ASTImporter::Import(NestedNameSpecifierLoc FromNNS) { + // FIXME: Implement! + return NestedNameSpecifierLoc(); +} + +TemplateName ASTImporter::Import(TemplateName From) { + switch (From.getKind()) { + case TemplateName::Template: + if (TemplateDecl *ToTemplate + = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl()))) + return TemplateName(ToTemplate); + + return TemplateName(); + + case TemplateName::OverloadedTemplate: { + OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate(); + UnresolvedSet<2> ToTemplates; + for (OverloadedTemplateStorage::iterator I = FromStorage->begin(), + E = FromStorage->end(); + I != E; ++I) { + if (NamedDecl *To = cast_or_null<NamedDecl>(Import(*I))) + ToTemplates.addDecl(To); + else + return TemplateName(); + } + return ToContext.getOverloadedTemplateName(ToTemplates.begin(), + ToTemplates.end()); + } + + case TemplateName::QualifiedTemplate: { + QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName(); + NestedNameSpecifier *Qualifier = Import(QTN->getQualifier()); + if (!Qualifier) + return TemplateName(); + + if (TemplateDecl *ToTemplate + = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl()))) + return ToContext.getQualifiedTemplateName(Qualifier, + QTN->hasTemplateKeyword(), + ToTemplate); + + return TemplateName(); + } + + case TemplateName::DependentTemplate: { + DependentTemplateName *DTN = From.getAsDependentTemplateName(); + NestedNameSpecifier *Qualifier = Import(DTN->getQualifier()); + if (!Qualifier) + return TemplateName(); + + if (DTN->isIdentifier()) { + return ToContext.getDependentTemplateName(Qualifier, + Import(DTN->getIdentifier())); + } + + return ToContext.getDependentTemplateName(Qualifier, DTN->getOperator()); + } + + case TemplateName::SubstTemplateTemplateParm: { + SubstTemplateTemplateParmStorage *subst + = From.getAsSubstTemplateTemplateParm(); + TemplateTemplateParmDecl *param + = cast_or_null<TemplateTemplateParmDecl>(Import(subst->getParameter())); + if (!param) + return TemplateName(); + + TemplateName replacement = Import(subst->getReplacement()); + if (replacement.isNull()) return TemplateName(); + + return ToContext.getSubstTemplateTemplateParm(param, replacement); + } + + case TemplateName::SubstTemplateTemplateParmPack: { + SubstTemplateTemplateParmPackStorage *SubstPack + = From.getAsSubstTemplateTemplateParmPack(); + TemplateTemplateParmDecl *Param + = cast_or_null<TemplateTemplateParmDecl>( + Import(SubstPack->getParameterPack())); + if (!Param) + return TemplateName(); + + ASTNodeImporter Importer(*this); + TemplateArgument ArgPack + = Importer.ImportTemplateArgument(SubstPack->getArgumentPack()); + if (ArgPack.isNull()) + return TemplateName(); + + return ToContext.getSubstTemplateTemplateParmPack(Param, ArgPack); + } + } + + llvm_unreachable("Invalid template name kind"); +} + +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 expansions. + // FIXME: Import macro expansions! + FromLoc = FromSM.getSpellingLoc(FromLoc); + std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc); + SourceManager &ToSM = ToContext.getSourceManager(); + return ToSM.getLocForStartOfFile(Import(Decomposed.first)) + .getLocWithOffset(Decomposed.second); +} + +SourceRange ASTImporter::Import(SourceRange FromRange) { + return SourceRange(Import(FromRange.getBegin()), Import(FromRange.getEnd())); +} + +FileID ASTImporter::Import(FileID FromID) { + llvm::DenseMap<FileID, FileID>::iterator Pos + = ImportedFileIDs.find(FromID); + 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 expansions 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->OrigEntry) { + // 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->OrigEntry->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(FromContext.getDiagnostics(), FromSM); + llvm::MemoryBuffer *ToBuf + = llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBuffer(), + FromBuf->getBufferIdentifier()); + ToID = ToSM.createFileIDForMemBuffer(ToBuf); + } + + + ImportedFileIDs[FromID] = ToID; + return ToID; +} + +void ASTImporter::ImportDefinition(Decl *From) { + Decl *To = Import(From); + if (!To) + return; + + if (DeclContext *FromDC = cast<DeclContext>(From)) { + ASTNodeImporter Importer(*this); + + if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(To)) { + if (!ToRecord->getDefinition()) { + Importer.ImportDefinition(cast<RecordDecl>(FromDC), ToRecord, + ASTNodeImporter::IDK_Everything); + return; + } + } + + if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(To)) { + if (!ToEnum->getDefinition()) { + Importer.ImportDefinition(cast<EnumDecl>(FromDC), ToEnum, + ASTNodeImporter::IDK_Everything); + return; + } + } + + if (ObjCInterfaceDecl *ToIFace = dyn_cast<ObjCInterfaceDecl>(To)) { + if (!ToIFace->getDefinition()) { + Importer.ImportDefinition(cast<ObjCInterfaceDecl>(FromDC), ToIFace, + ASTNodeImporter::IDK_Everything); + return; + } + } + + if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(To)) { + if (!ToProto->getDefinition()) { + Importer.ImportDefinition(cast<ObjCProtocolDecl>(FromDC), ToProto, + ASTNodeImporter::IDK_Everything); + return; + } + } + + Importer.ImportDeclContext(FromDC, true); + } +} + +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(); + } + + llvm_unreachable("Invalid DeclarationName Kind!"); +} + +IdentifierInfo *ASTImporter::Import(const IdentifierInfo *FromId) { + if (!FromId) + return 0; + + return &ToContext.Idents.get(FromId->getName()); +} + +Selector ASTImporter::Import(Selector FromSel) { + if (FromSel.isNull()) + return Selector(); + + SmallVector<IdentifierInfo *, 4> Idents; + Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(0))); + for (unsigned I = 1, N = FromSel.getNumArgs(); I < N; ++I) + Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(I))); + return ToContext.Selectors.getSelector(FromSel.getNumArgs(), Idents.data()); +} + +DeclarationName ASTImporter::HandleNameConflict(DeclarationName Name, + DeclContext *DC, + unsigned IDNS, + NamedDecl **Decls, + unsigned NumDecls) { + return Name; +} + +DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) { + return ToContext.getDiagnostics().Report(Loc, DiagID); +} + +DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) { + return FromContext.getDiagnostics().Report(Loc, DiagID); +} + +void ASTImporter::CompleteDecl (Decl *D) { + if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) { + if (!ID->getDefinition()) + ID->startDefinition(); + } + else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) { + if (!PD->getDefinition()) + PD->startDefinition(); + } + else if (TagDecl *TD = dyn_cast<TagDecl>(D)) { + if (!TD->getDefinition() && !TD->isBeingDefined()) { + TD->startDefinition(); + TD->setCompleteDefinition(true); + } + } + else { + assert (0 && "CompleteDecl called on a Decl that can't be completed"); + } +} + +Decl *ASTImporter::Imported(Decl *From, Decl *To) { + ImportedDecls[From] = To; + return To; +} + +bool ASTImporter::IsStructurallyEquivalent(QualType From, QualType To) { + llvm::DenseMap<const Type *, const Type *>::iterator Pos + = ImportedTypes.find(From.getTypePtr()); + if (Pos != ImportedTypes.end() && ToContext.hasSameType(Import(From), To)) + return true; + + StructuralEquivalenceContext Ctx(FromContext, ToContext, NonEquivalentDecls); + return Ctx.IsStructurallyEquivalent(From, To); +} |