1 //===--- ASTImporter.cpp - Importing ASTs from other Contexts ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the ASTImporter class which imports AST nodes from one
11 // context into another context.
13 //===----------------------------------------------------------------------===//
14 #include "clang/AST/ASTImporter.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/ASTDiagnostic.h"
17 #include "clang/AST/DeclCXX.h"
18 #include "clang/AST/DeclObjC.h"
19 #include "clang/AST/DeclVisitor.h"
20 #include "clang/AST/StmtVisitor.h"
21 #include "clang/AST/TypeVisitor.h"
22 #include "clang/Basic/FileManager.h"
23 #include "clang/Basic/SourceManager.h"
24 #include "llvm/Support/MemoryBuffer.h"
28 class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, QualType>,
29 public DeclVisitor<ASTNodeImporter, Decl *>,
30 public StmtVisitor<ASTNodeImporter, Stmt *> {
31 ASTImporter &Importer;
34 explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) { }
36 using TypeVisitor<ASTNodeImporter, QualType>::Visit;
37 using DeclVisitor<ASTNodeImporter, Decl *>::Visit;
38 using StmtVisitor<ASTNodeImporter, Stmt *>::Visit;
41 QualType VisitType(const Type *T);
42 QualType VisitBuiltinType(const BuiltinType *T);
43 QualType VisitComplexType(const ComplexType *T);
44 QualType VisitPointerType(const PointerType *T);
45 QualType VisitBlockPointerType(const BlockPointerType *T);
46 QualType VisitLValueReferenceType(const LValueReferenceType *T);
47 QualType VisitRValueReferenceType(const RValueReferenceType *T);
48 QualType VisitMemberPointerType(const MemberPointerType *T);
49 QualType VisitConstantArrayType(const ConstantArrayType *T);
50 QualType VisitIncompleteArrayType(const IncompleteArrayType *T);
51 QualType VisitVariableArrayType(const VariableArrayType *T);
52 // FIXME: DependentSizedArrayType
53 // FIXME: DependentSizedExtVectorType
54 QualType VisitVectorType(const VectorType *T);
55 QualType VisitExtVectorType(const ExtVectorType *T);
56 QualType VisitFunctionNoProtoType(const FunctionNoProtoType *T);
57 QualType VisitFunctionProtoType(const FunctionProtoType *T);
58 // FIXME: UnresolvedUsingType
59 QualType VisitParenType(const ParenType *T);
60 QualType VisitTypedefType(const TypedefType *T);
61 QualType VisitTypeOfExprType(const TypeOfExprType *T);
62 // FIXME: DependentTypeOfExprType
63 QualType VisitTypeOfType(const TypeOfType *T);
64 QualType VisitDecltypeType(const DecltypeType *T);
65 QualType VisitUnaryTransformType(const UnaryTransformType *T);
66 QualType VisitAutoType(const AutoType *T);
67 // FIXME: DependentDecltypeType
68 QualType VisitRecordType(const RecordType *T);
69 QualType VisitEnumType(const EnumType *T);
70 // FIXME: TemplateTypeParmType
71 // FIXME: SubstTemplateTypeParmType
72 QualType VisitTemplateSpecializationType(const TemplateSpecializationType *T);
73 QualType VisitElaboratedType(const ElaboratedType *T);
74 // FIXME: DependentNameType
75 // FIXME: DependentTemplateSpecializationType
76 QualType VisitObjCInterfaceType(const ObjCInterfaceType *T);
77 QualType VisitObjCObjectType(const ObjCObjectType *T);
78 QualType VisitObjCObjectPointerType(const ObjCObjectPointerType *T);
80 // Importing declarations
81 bool ImportDeclParts(NamedDecl *D, DeclContext *&DC,
82 DeclContext *&LexicalDC, DeclarationName &Name,
84 void ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD = nullptr);
85 void ImportDeclarationNameLoc(const DeclarationNameInfo &From,
86 DeclarationNameInfo& To);
87 void ImportDeclContext(DeclContext *FromDC, bool ForceImport = false);
89 /// \brief What we should import from the definition.
90 enum ImportDefinitionKind {
91 /// \brief Import the default subset of the definition, which might be
92 /// nothing (if minimal import is set) or might be everything (if minimal
93 /// import is not set).
95 /// \brief Import everything.
97 /// \brief Import only the bare bones needed to establish a valid
102 bool shouldForceImportDeclContext(ImportDefinitionKind IDK) {
103 return IDK == IDK_Everything ||
104 (IDK == IDK_Default && !Importer.isMinimalImport());
107 bool ImportDefinition(RecordDecl *From, RecordDecl *To,
108 ImportDefinitionKind Kind = IDK_Default);
109 bool ImportDefinition(VarDecl *From, VarDecl *To,
110 ImportDefinitionKind Kind = IDK_Default);
111 bool ImportDefinition(EnumDecl *From, EnumDecl *To,
112 ImportDefinitionKind Kind = IDK_Default);
113 bool ImportDefinition(ObjCInterfaceDecl *From, ObjCInterfaceDecl *To,
114 ImportDefinitionKind Kind = IDK_Default);
115 bool ImportDefinition(ObjCProtocolDecl *From, ObjCProtocolDecl *To,
116 ImportDefinitionKind Kind = IDK_Default);
117 TemplateParameterList *ImportTemplateParameterList(
118 TemplateParameterList *Params);
119 TemplateArgument ImportTemplateArgument(const TemplateArgument &From);
120 bool ImportTemplateArguments(const TemplateArgument *FromArgs,
121 unsigned NumFromArgs,
122 SmallVectorImpl<TemplateArgument> &ToArgs);
123 bool IsStructuralMatch(RecordDecl *FromRecord, RecordDecl *ToRecord,
124 bool Complain = true);
125 bool IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
126 bool Complain = true);
127 bool IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToRecord);
128 bool IsStructuralMatch(EnumConstantDecl *FromEC, EnumConstantDecl *ToEC);
129 bool IsStructuralMatch(ClassTemplateDecl *From, ClassTemplateDecl *To);
130 bool IsStructuralMatch(VarTemplateDecl *From, VarTemplateDecl *To);
131 Decl *VisitDecl(Decl *D);
132 Decl *VisitTranslationUnitDecl(TranslationUnitDecl *D);
133 Decl *VisitNamespaceDecl(NamespaceDecl *D);
134 Decl *VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias);
135 Decl *VisitTypedefDecl(TypedefDecl *D);
136 Decl *VisitTypeAliasDecl(TypeAliasDecl *D);
137 Decl *VisitEnumDecl(EnumDecl *D);
138 Decl *VisitRecordDecl(RecordDecl *D);
139 Decl *VisitEnumConstantDecl(EnumConstantDecl *D);
140 Decl *VisitFunctionDecl(FunctionDecl *D);
141 Decl *VisitCXXMethodDecl(CXXMethodDecl *D);
142 Decl *VisitCXXConstructorDecl(CXXConstructorDecl *D);
143 Decl *VisitCXXDestructorDecl(CXXDestructorDecl *D);
144 Decl *VisitCXXConversionDecl(CXXConversionDecl *D);
145 Decl *VisitFieldDecl(FieldDecl *D);
146 Decl *VisitIndirectFieldDecl(IndirectFieldDecl *D);
147 Decl *VisitObjCIvarDecl(ObjCIvarDecl *D);
148 Decl *VisitVarDecl(VarDecl *D);
149 Decl *VisitImplicitParamDecl(ImplicitParamDecl *D);
150 Decl *VisitParmVarDecl(ParmVarDecl *D);
151 Decl *VisitObjCMethodDecl(ObjCMethodDecl *D);
152 Decl *VisitObjCCategoryDecl(ObjCCategoryDecl *D);
153 Decl *VisitObjCProtocolDecl(ObjCProtocolDecl *D);
154 Decl *VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
155 Decl *VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
156 Decl *VisitObjCImplementationDecl(ObjCImplementationDecl *D);
157 Decl *VisitObjCPropertyDecl(ObjCPropertyDecl *D);
158 Decl *VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
159 Decl *VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
160 Decl *VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
161 Decl *VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
162 Decl *VisitClassTemplateDecl(ClassTemplateDecl *D);
163 Decl *VisitClassTemplateSpecializationDecl(
164 ClassTemplateSpecializationDecl *D);
165 Decl *VisitVarTemplateDecl(VarTemplateDecl *D);
166 Decl *VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
168 // Importing statements
169 Stmt *VisitStmt(Stmt *S);
171 // Importing expressions
172 Expr *VisitExpr(Expr *E);
173 Expr *VisitDeclRefExpr(DeclRefExpr *E);
174 Expr *VisitIntegerLiteral(IntegerLiteral *E);
175 Expr *VisitCharacterLiteral(CharacterLiteral *E);
176 Expr *VisitParenExpr(ParenExpr *E);
177 Expr *VisitUnaryOperator(UnaryOperator *E);
178 Expr *VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E);
179 Expr *VisitBinaryOperator(BinaryOperator *E);
180 Expr *VisitCompoundAssignOperator(CompoundAssignOperator *E);
181 Expr *VisitImplicitCastExpr(ImplicitCastExpr *E);
182 Expr *VisitCStyleCastExpr(CStyleCastExpr *E);
185 using namespace clang;
187 //----------------------------------------------------------------------------
188 // Structural Equivalence
189 //----------------------------------------------------------------------------
192 struct StructuralEquivalenceContext {
193 /// \brief AST contexts for which we are checking structural equivalence.
196 /// \brief The set of "tentative" equivalences between two canonical
197 /// declarations, mapping from a declaration in the first context to the
198 /// declaration in the second context that we believe to be equivalent.
199 llvm::DenseMap<Decl *, Decl *> TentativeEquivalences;
201 /// \brief Queue of declarations in the first context whose equivalence
202 /// with a declaration in the second context still needs to be verified.
203 std::deque<Decl *> DeclsToCheck;
205 /// \brief Declaration (from, to) pairs that are known not to be equivalent
206 /// (which we have already complained about).
207 llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls;
209 /// \brief Whether we're being strict about the spelling of types when
210 /// unifying two types.
211 bool StrictTypeSpelling;
213 /// \brief Whether to complain about failures.
216 /// \brief \c true if the last diagnostic came from C2.
219 StructuralEquivalenceContext(ASTContext &C1, ASTContext &C2,
220 llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls,
221 bool StrictTypeSpelling = false,
222 bool Complain = true)
223 : C1(C1), C2(C2), NonEquivalentDecls(NonEquivalentDecls),
224 StrictTypeSpelling(StrictTypeSpelling), Complain(Complain),
225 LastDiagFromC2(false) {}
227 /// \brief Determine whether the two declarations are structurally
229 bool IsStructurallyEquivalent(Decl *D1, Decl *D2);
231 /// \brief Determine whether the two types are structurally equivalent.
232 bool IsStructurallyEquivalent(QualType T1, QualType T2);
235 /// \brief Finish checking all of the structural equivalences.
237 /// \returns true if an error occurred, false otherwise.
241 DiagnosticBuilder Diag1(SourceLocation Loc, unsigned DiagID) {
242 assert(Complain && "Not allowed to complain");
244 C1.getDiagnostics().notePriorDiagnosticFrom(C2.getDiagnostics());
245 LastDiagFromC2 = false;
246 return C1.getDiagnostics().Report(Loc, DiagID);
249 DiagnosticBuilder Diag2(SourceLocation Loc, unsigned DiagID) {
250 assert(Complain && "Not allowed to complain");
252 C2.getDiagnostics().notePriorDiagnosticFrom(C1.getDiagnostics());
253 LastDiagFromC2 = true;
254 return C2.getDiagnostics().Report(Loc, DiagID);
259 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
260 QualType T1, QualType T2);
261 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
264 /// \brief Determine structural equivalence of two expressions.
265 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
266 Expr *E1, Expr *E2) {
270 // FIXME: Actually perform a structural comparison!
274 /// \brief Determine whether two identifiers are equivalent.
275 static bool IsStructurallyEquivalent(const IdentifierInfo *Name1,
276 const IdentifierInfo *Name2) {
277 if (!Name1 || !Name2)
278 return Name1 == Name2;
280 return Name1->getName() == Name2->getName();
283 /// \brief Determine whether two nested-name-specifiers are equivalent.
284 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
285 NestedNameSpecifier *NNS1,
286 NestedNameSpecifier *NNS2) {
291 /// \brief Determine whether two template arguments are equivalent.
292 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
293 const TemplateArgument &Arg1,
294 const TemplateArgument &Arg2) {
295 if (Arg1.getKind() != Arg2.getKind())
298 switch (Arg1.getKind()) {
299 case TemplateArgument::Null:
302 case TemplateArgument::Type:
303 return Context.IsStructurallyEquivalent(Arg1.getAsType(), Arg2.getAsType());
305 case TemplateArgument::Integral:
306 if (!Context.IsStructurallyEquivalent(Arg1.getIntegralType(),
307 Arg2.getIntegralType()))
310 return llvm::APSInt::isSameValue(Arg1.getAsIntegral(), Arg2.getAsIntegral());
312 case TemplateArgument::Declaration:
313 return Context.IsStructurallyEquivalent(Arg1.getAsDecl(), Arg2.getAsDecl());
315 case TemplateArgument::NullPtr:
316 return true; // FIXME: Is this correct?
318 case TemplateArgument::Template:
319 return IsStructurallyEquivalent(Context,
320 Arg1.getAsTemplate(),
321 Arg2.getAsTemplate());
323 case TemplateArgument::TemplateExpansion:
324 return IsStructurallyEquivalent(Context,
325 Arg1.getAsTemplateOrTemplatePattern(),
326 Arg2.getAsTemplateOrTemplatePattern());
328 case TemplateArgument::Expression:
329 return IsStructurallyEquivalent(Context,
330 Arg1.getAsExpr(), Arg2.getAsExpr());
332 case TemplateArgument::Pack:
333 if (Arg1.pack_size() != Arg2.pack_size())
336 for (unsigned I = 0, N = Arg1.pack_size(); I != N; ++I)
337 if (!IsStructurallyEquivalent(Context,
338 Arg1.pack_begin()[I],
339 Arg2.pack_begin()[I]))
345 llvm_unreachable("Invalid template argument kind");
348 /// \brief Determine structural equivalence for the common part of array
350 static bool IsArrayStructurallyEquivalent(StructuralEquivalenceContext &Context,
351 const ArrayType *Array1,
352 const ArrayType *Array2) {
353 if (!IsStructurallyEquivalent(Context,
354 Array1->getElementType(),
355 Array2->getElementType()))
357 if (Array1->getSizeModifier() != Array2->getSizeModifier())
359 if (Array1->getIndexTypeQualifiers() != Array2->getIndexTypeQualifiers())
365 /// \brief Determine structural equivalence of two types.
366 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
367 QualType T1, QualType T2) {
368 if (T1.isNull() || T2.isNull())
369 return T1.isNull() && T2.isNull();
371 if (!Context.StrictTypeSpelling) {
372 // We aren't being strict about token-to-token equivalence of types,
373 // so map down to the canonical type.
374 T1 = Context.C1.getCanonicalType(T1);
375 T2 = Context.C2.getCanonicalType(T2);
378 if (T1.getQualifiers() != T2.getQualifiers())
381 Type::TypeClass TC = T1->getTypeClass();
383 if (T1->getTypeClass() != T2->getTypeClass()) {
384 // Compare function types with prototypes vs. without prototypes as if
385 // both did not have prototypes.
386 if (T1->getTypeClass() == Type::FunctionProto &&
387 T2->getTypeClass() == Type::FunctionNoProto)
388 TC = Type::FunctionNoProto;
389 else if (T1->getTypeClass() == Type::FunctionNoProto &&
390 T2->getTypeClass() == Type::FunctionProto)
391 TC = Type::FunctionNoProto;
398 // FIXME: Deal with Char_S/Char_U.
399 if (cast<BuiltinType>(T1)->getKind() != cast<BuiltinType>(T2)->getKind())
404 if (!IsStructurallyEquivalent(Context,
405 cast<ComplexType>(T1)->getElementType(),
406 cast<ComplexType>(T2)->getElementType()))
412 if (!IsStructurallyEquivalent(Context,
413 cast<AdjustedType>(T1)->getOriginalType(),
414 cast<AdjustedType>(T2)->getOriginalType()))
419 if (!IsStructurallyEquivalent(Context,
420 cast<PointerType>(T1)->getPointeeType(),
421 cast<PointerType>(T2)->getPointeeType()))
425 case Type::BlockPointer:
426 if (!IsStructurallyEquivalent(Context,
427 cast<BlockPointerType>(T1)->getPointeeType(),
428 cast<BlockPointerType>(T2)->getPointeeType()))
432 case Type::LValueReference:
433 case Type::RValueReference: {
434 const ReferenceType *Ref1 = cast<ReferenceType>(T1);
435 const ReferenceType *Ref2 = cast<ReferenceType>(T2);
436 if (Ref1->isSpelledAsLValue() != Ref2->isSpelledAsLValue())
438 if (Ref1->isInnerRef() != Ref2->isInnerRef())
440 if (!IsStructurallyEquivalent(Context,
441 Ref1->getPointeeTypeAsWritten(),
442 Ref2->getPointeeTypeAsWritten()))
447 case Type::MemberPointer: {
448 const MemberPointerType *MemPtr1 = cast<MemberPointerType>(T1);
449 const MemberPointerType *MemPtr2 = cast<MemberPointerType>(T2);
450 if (!IsStructurallyEquivalent(Context,
451 MemPtr1->getPointeeType(),
452 MemPtr2->getPointeeType()))
454 if (!IsStructurallyEquivalent(Context,
455 QualType(MemPtr1->getClass(), 0),
456 QualType(MemPtr2->getClass(), 0)))
461 case Type::ConstantArray: {
462 const ConstantArrayType *Array1 = cast<ConstantArrayType>(T1);
463 const ConstantArrayType *Array2 = cast<ConstantArrayType>(T2);
464 if (!llvm::APInt::isSameValue(Array1->getSize(), Array2->getSize()))
467 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
472 case Type::IncompleteArray:
473 if (!IsArrayStructurallyEquivalent(Context,
475 cast<ArrayType>(T2)))
479 case Type::VariableArray: {
480 const VariableArrayType *Array1 = cast<VariableArrayType>(T1);
481 const VariableArrayType *Array2 = cast<VariableArrayType>(T2);
482 if (!IsStructurallyEquivalent(Context,
483 Array1->getSizeExpr(), Array2->getSizeExpr()))
486 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
492 case Type::DependentSizedArray: {
493 const DependentSizedArrayType *Array1 = cast<DependentSizedArrayType>(T1);
494 const DependentSizedArrayType *Array2 = cast<DependentSizedArrayType>(T2);
495 if (!IsStructurallyEquivalent(Context,
496 Array1->getSizeExpr(), Array2->getSizeExpr()))
499 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
505 case Type::DependentSizedExtVector: {
506 const DependentSizedExtVectorType *Vec1
507 = cast<DependentSizedExtVectorType>(T1);
508 const DependentSizedExtVectorType *Vec2
509 = cast<DependentSizedExtVectorType>(T2);
510 if (!IsStructurallyEquivalent(Context,
511 Vec1->getSizeExpr(), Vec2->getSizeExpr()))
513 if (!IsStructurallyEquivalent(Context,
514 Vec1->getElementType(),
515 Vec2->getElementType()))
521 case Type::ExtVector: {
522 const VectorType *Vec1 = cast<VectorType>(T1);
523 const VectorType *Vec2 = cast<VectorType>(T2);
524 if (!IsStructurallyEquivalent(Context,
525 Vec1->getElementType(),
526 Vec2->getElementType()))
528 if (Vec1->getNumElements() != Vec2->getNumElements())
530 if (Vec1->getVectorKind() != Vec2->getVectorKind())
535 case Type::FunctionProto: {
536 const FunctionProtoType *Proto1 = cast<FunctionProtoType>(T1);
537 const FunctionProtoType *Proto2 = cast<FunctionProtoType>(T2);
538 if (Proto1->getNumParams() != Proto2->getNumParams())
540 for (unsigned I = 0, N = Proto1->getNumParams(); I != N; ++I) {
541 if (!IsStructurallyEquivalent(Context, Proto1->getParamType(I),
542 Proto2->getParamType(I)))
545 if (Proto1->isVariadic() != Proto2->isVariadic())
547 if (Proto1->getExceptionSpecType() != Proto2->getExceptionSpecType())
549 if (Proto1->getExceptionSpecType() == EST_Dynamic) {
550 if (Proto1->getNumExceptions() != Proto2->getNumExceptions())
552 for (unsigned I = 0, N = Proto1->getNumExceptions(); I != N; ++I) {
553 if (!IsStructurallyEquivalent(Context,
554 Proto1->getExceptionType(I),
555 Proto2->getExceptionType(I)))
558 } else if (Proto1->getExceptionSpecType() == EST_ComputedNoexcept) {
559 if (!IsStructurallyEquivalent(Context,
560 Proto1->getNoexceptExpr(),
561 Proto2->getNoexceptExpr()))
564 if (Proto1->getTypeQuals() != Proto2->getTypeQuals())
567 // Fall through to check the bits common with FunctionNoProtoType.
570 case Type::FunctionNoProto: {
571 const FunctionType *Function1 = cast<FunctionType>(T1);
572 const FunctionType *Function2 = cast<FunctionType>(T2);
573 if (!IsStructurallyEquivalent(Context, Function1->getReturnType(),
574 Function2->getReturnType()))
576 if (Function1->getExtInfo() != Function2->getExtInfo())
581 case Type::UnresolvedUsing:
582 if (!IsStructurallyEquivalent(Context,
583 cast<UnresolvedUsingType>(T1)->getDecl(),
584 cast<UnresolvedUsingType>(T2)->getDecl()))
589 case Type::Attributed:
590 if (!IsStructurallyEquivalent(Context,
591 cast<AttributedType>(T1)->getModifiedType(),
592 cast<AttributedType>(T2)->getModifiedType()))
594 if (!IsStructurallyEquivalent(Context,
595 cast<AttributedType>(T1)->getEquivalentType(),
596 cast<AttributedType>(T2)->getEquivalentType()))
601 if (!IsStructurallyEquivalent(Context,
602 cast<ParenType>(T1)->getInnerType(),
603 cast<ParenType>(T2)->getInnerType()))
608 if (!IsStructurallyEquivalent(Context,
609 cast<TypedefType>(T1)->getDecl(),
610 cast<TypedefType>(T2)->getDecl()))
614 case Type::TypeOfExpr:
615 if (!IsStructurallyEquivalent(Context,
616 cast<TypeOfExprType>(T1)->getUnderlyingExpr(),
617 cast<TypeOfExprType>(T2)->getUnderlyingExpr()))
622 if (!IsStructurallyEquivalent(Context,
623 cast<TypeOfType>(T1)->getUnderlyingType(),
624 cast<TypeOfType>(T2)->getUnderlyingType()))
628 case Type::UnaryTransform:
629 if (!IsStructurallyEquivalent(Context,
630 cast<UnaryTransformType>(T1)->getUnderlyingType(),
631 cast<UnaryTransformType>(T1)->getUnderlyingType()))
636 if (!IsStructurallyEquivalent(Context,
637 cast<DecltypeType>(T1)->getUnderlyingExpr(),
638 cast<DecltypeType>(T2)->getUnderlyingExpr()))
643 if (!IsStructurallyEquivalent(Context,
644 cast<AutoType>(T1)->getDeducedType(),
645 cast<AutoType>(T2)->getDeducedType()))
651 if (!IsStructurallyEquivalent(Context,
652 cast<TagType>(T1)->getDecl(),
653 cast<TagType>(T2)->getDecl()))
657 case Type::TemplateTypeParm: {
658 const TemplateTypeParmType *Parm1 = cast<TemplateTypeParmType>(T1);
659 const TemplateTypeParmType *Parm2 = cast<TemplateTypeParmType>(T2);
660 if (Parm1->getDepth() != Parm2->getDepth())
662 if (Parm1->getIndex() != Parm2->getIndex())
664 if (Parm1->isParameterPack() != Parm2->isParameterPack())
667 // Names of template type parameters are never significant.
671 case Type::SubstTemplateTypeParm: {
672 const SubstTemplateTypeParmType *Subst1
673 = cast<SubstTemplateTypeParmType>(T1);
674 const SubstTemplateTypeParmType *Subst2
675 = cast<SubstTemplateTypeParmType>(T2);
676 if (!IsStructurallyEquivalent(Context,
677 QualType(Subst1->getReplacedParameter(), 0),
678 QualType(Subst2->getReplacedParameter(), 0)))
680 if (!IsStructurallyEquivalent(Context,
681 Subst1->getReplacementType(),
682 Subst2->getReplacementType()))
687 case Type::SubstTemplateTypeParmPack: {
688 const SubstTemplateTypeParmPackType *Subst1
689 = cast<SubstTemplateTypeParmPackType>(T1);
690 const SubstTemplateTypeParmPackType *Subst2
691 = cast<SubstTemplateTypeParmPackType>(T2);
692 if (!IsStructurallyEquivalent(Context,
693 QualType(Subst1->getReplacedParameter(), 0),
694 QualType(Subst2->getReplacedParameter(), 0)))
696 if (!IsStructurallyEquivalent(Context,
697 Subst1->getArgumentPack(),
698 Subst2->getArgumentPack()))
702 case Type::TemplateSpecialization: {
703 const TemplateSpecializationType *Spec1
704 = cast<TemplateSpecializationType>(T1);
705 const TemplateSpecializationType *Spec2
706 = cast<TemplateSpecializationType>(T2);
707 if (!IsStructurallyEquivalent(Context,
708 Spec1->getTemplateName(),
709 Spec2->getTemplateName()))
711 if (Spec1->getNumArgs() != Spec2->getNumArgs())
713 for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) {
714 if (!IsStructurallyEquivalent(Context,
715 Spec1->getArg(I), Spec2->getArg(I)))
721 case Type::Elaborated: {
722 const ElaboratedType *Elab1 = cast<ElaboratedType>(T1);
723 const ElaboratedType *Elab2 = cast<ElaboratedType>(T2);
724 // CHECKME: what if a keyword is ETK_None or ETK_typename ?
725 if (Elab1->getKeyword() != Elab2->getKeyword())
727 if (!IsStructurallyEquivalent(Context,
728 Elab1->getQualifier(),
729 Elab2->getQualifier()))
731 if (!IsStructurallyEquivalent(Context,
732 Elab1->getNamedType(),
733 Elab2->getNamedType()))
738 case Type::InjectedClassName: {
739 const InjectedClassNameType *Inj1 = cast<InjectedClassNameType>(T1);
740 const InjectedClassNameType *Inj2 = cast<InjectedClassNameType>(T2);
741 if (!IsStructurallyEquivalent(Context,
742 Inj1->getInjectedSpecializationType(),
743 Inj2->getInjectedSpecializationType()))
748 case Type::DependentName: {
749 const DependentNameType *Typename1 = cast<DependentNameType>(T1);
750 const DependentNameType *Typename2 = cast<DependentNameType>(T2);
751 if (!IsStructurallyEquivalent(Context,
752 Typename1->getQualifier(),
753 Typename2->getQualifier()))
755 if (!IsStructurallyEquivalent(Typename1->getIdentifier(),
756 Typename2->getIdentifier()))
762 case Type::DependentTemplateSpecialization: {
763 const DependentTemplateSpecializationType *Spec1 =
764 cast<DependentTemplateSpecializationType>(T1);
765 const DependentTemplateSpecializationType *Spec2 =
766 cast<DependentTemplateSpecializationType>(T2);
767 if (!IsStructurallyEquivalent(Context,
768 Spec1->getQualifier(),
769 Spec2->getQualifier()))
771 if (!IsStructurallyEquivalent(Spec1->getIdentifier(),
772 Spec2->getIdentifier()))
774 if (Spec1->getNumArgs() != Spec2->getNumArgs())
776 for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) {
777 if (!IsStructurallyEquivalent(Context,
778 Spec1->getArg(I), Spec2->getArg(I)))
784 case Type::PackExpansion:
785 if (!IsStructurallyEquivalent(Context,
786 cast<PackExpansionType>(T1)->getPattern(),
787 cast<PackExpansionType>(T2)->getPattern()))
791 case Type::ObjCInterface: {
792 const ObjCInterfaceType *Iface1 = cast<ObjCInterfaceType>(T1);
793 const ObjCInterfaceType *Iface2 = cast<ObjCInterfaceType>(T2);
794 if (!IsStructurallyEquivalent(Context,
795 Iface1->getDecl(), Iface2->getDecl()))
800 case Type::ObjCObject: {
801 const ObjCObjectType *Obj1 = cast<ObjCObjectType>(T1);
802 const ObjCObjectType *Obj2 = cast<ObjCObjectType>(T2);
803 if (!IsStructurallyEquivalent(Context,
805 Obj2->getBaseType()))
807 if (Obj1->getNumProtocols() != Obj2->getNumProtocols())
809 for (unsigned I = 0, N = Obj1->getNumProtocols(); I != N; ++I) {
810 if (!IsStructurallyEquivalent(Context,
811 Obj1->getProtocol(I),
812 Obj2->getProtocol(I)))
818 case Type::ObjCObjectPointer: {
819 const ObjCObjectPointerType *Ptr1 = cast<ObjCObjectPointerType>(T1);
820 const ObjCObjectPointerType *Ptr2 = cast<ObjCObjectPointerType>(T2);
821 if (!IsStructurallyEquivalent(Context,
822 Ptr1->getPointeeType(),
823 Ptr2->getPointeeType()))
829 if (!IsStructurallyEquivalent(Context,
830 cast<AtomicType>(T1)->getValueType(),
831 cast<AtomicType>(T2)->getValueType()))
841 /// \brief Determine structural equivalence of two fields.
842 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
843 FieldDecl *Field1, FieldDecl *Field2) {
844 RecordDecl *Owner2 = cast<RecordDecl>(Field2->getDeclContext());
846 // For anonymous structs/unions, match up the anonymous struct/union type
847 // declarations directly, so that we don't go off searching for anonymous
849 if (Field1->isAnonymousStructOrUnion() &&
850 Field2->isAnonymousStructOrUnion()) {
851 RecordDecl *D1 = Field1->getType()->castAs<RecordType>()->getDecl();
852 RecordDecl *D2 = Field2->getType()->castAs<RecordType>()->getDecl();
853 return IsStructurallyEquivalent(Context, D1, D2);
856 // Check for equivalent field names.
857 IdentifierInfo *Name1 = Field1->getIdentifier();
858 IdentifierInfo *Name2 = Field2->getIdentifier();
859 if (!::IsStructurallyEquivalent(Name1, Name2))
862 if (!IsStructurallyEquivalent(Context,
863 Field1->getType(), Field2->getType())) {
864 if (Context.Complain) {
865 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent)
866 << Context.C2.getTypeDeclType(Owner2);
867 Context.Diag2(Field2->getLocation(), diag::note_odr_field)
868 << Field2->getDeclName() << Field2->getType();
869 Context.Diag1(Field1->getLocation(), diag::note_odr_field)
870 << Field1->getDeclName() << Field1->getType();
875 if (Field1->isBitField() != Field2->isBitField()) {
876 if (Context.Complain) {
877 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent)
878 << Context.C2.getTypeDeclType(Owner2);
879 if (Field1->isBitField()) {
880 Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field)
881 << Field1->getDeclName() << Field1->getType()
882 << Field1->getBitWidthValue(Context.C1);
883 Context.Diag2(Field2->getLocation(), diag::note_odr_not_bit_field)
884 << Field2->getDeclName();
886 Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field)
887 << Field2->getDeclName() << Field2->getType()
888 << Field2->getBitWidthValue(Context.C2);
889 Context.Diag1(Field1->getLocation(), diag::note_odr_not_bit_field)
890 << Field1->getDeclName();
896 if (Field1->isBitField()) {
897 // Make sure that the bit-fields are the same length.
898 unsigned Bits1 = Field1->getBitWidthValue(Context.C1);
899 unsigned Bits2 = Field2->getBitWidthValue(Context.C2);
901 if (Bits1 != Bits2) {
902 if (Context.Complain) {
903 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent)
904 << Context.C2.getTypeDeclType(Owner2);
905 Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field)
906 << Field2->getDeclName() << Field2->getType() << Bits2;
907 Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field)
908 << Field1->getDeclName() << Field1->getType() << Bits1;
917 /// \brief Find the index of the given anonymous struct/union within its
920 /// \returns Returns the index of this anonymous struct/union in its context,
921 /// including the next assigned index (if none of them match). Returns an
922 /// empty option if the context is not a record, i.e.. if the anonymous
923 /// struct/union is at namespace or block scope.
924 static Optional<unsigned> findAnonymousStructOrUnionIndex(RecordDecl *Anon) {
925 ASTContext &Context = Anon->getASTContext();
926 QualType AnonTy = Context.getRecordType(Anon);
928 RecordDecl *Owner = dyn_cast<RecordDecl>(Anon->getDeclContext());
933 for (const auto *D : Owner->noload_decls()) {
934 const auto *F = dyn_cast<FieldDecl>(D);
935 if (!F || !F->isAnonymousStructOrUnion())
938 if (Context.hasSameType(F->getType(), AnonTy))
947 /// \brief Determine structural equivalence of two records.
948 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
949 RecordDecl *D1, RecordDecl *D2) {
950 if (D1->isUnion() != D2->isUnion()) {
951 if (Context.Complain) {
952 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
953 << Context.C2.getTypeDeclType(D2);
954 Context.Diag1(D1->getLocation(), diag::note_odr_tag_kind_here)
955 << D1->getDeclName() << (unsigned)D1->getTagKind();
960 if (D1->isAnonymousStructOrUnion() && D2->isAnonymousStructOrUnion()) {
961 // If both anonymous structs/unions are in a record context, make sure
962 // they occur in the same location in the context records.
963 if (Optional<unsigned> Index1 = findAnonymousStructOrUnionIndex(D1)) {
964 if (Optional<unsigned> Index2 = findAnonymousStructOrUnionIndex(D2)) {
965 if (*Index1 != *Index2)
971 // If both declarations are class template specializations, we know
972 // the ODR applies, so check the template and template arguments.
973 ClassTemplateSpecializationDecl *Spec1
974 = dyn_cast<ClassTemplateSpecializationDecl>(D1);
975 ClassTemplateSpecializationDecl *Spec2
976 = dyn_cast<ClassTemplateSpecializationDecl>(D2);
977 if (Spec1 && Spec2) {
978 // Check that the specialized templates are the same.
979 if (!IsStructurallyEquivalent(Context, Spec1->getSpecializedTemplate(),
980 Spec2->getSpecializedTemplate()))
983 // Check that the template arguments are the same.
984 if (Spec1->getTemplateArgs().size() != Spec2->getTemplateArgs().size())
987 for (unsigned I = 0, N = Spec1->getTemplateArgs().size(); I != N; ++I)
988 if (!IsStructurallyEquivalent(Context,
989 Spec1->getTemplateArgs().get(I),
990 Spec2->getTemplateArgs().get(I)))
993 // If one is a class template specialization and the other is not, these
994 // structures are different.
995 else if (Spec1 || Spec2)
998 // Compare the definitions of these two records. If either or both are
999 // incomplete, we assume that they are equivalent.
1000 D1 = D1->getDefinition();
1001 D2 = D2->getDefinition();
1005 if (CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(D1)) {
1006 if (CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(D2)) {
1007 if (D1CXX->getNumBases() != D2CXX->getNumBases()) {
1008 if (Context.Complain) {
1009 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1010 << Context.C2.getTypeDeclType(D2);
1011 Context.Diag2(D2->getLocation(), diag::note_odr_number_of_bases)
1012 << D2CXX->getNumBases();
1013 Context.Diag1(D1->getLocation(), diag::note_odr_number_of_bases)
1014 << D1CXX->getNumBases();
1019 // Check the base classes.
1020 for (CXXRecordDecl::base_class_iterator Base1 = D1CXX->bases_begin(),
1021 BaseEnd1 = D1CXX->bases_end(),
1022 Base2 = D2CXX->bases_begin();
1025 if (!IsStructurallyEquivalent(Context,
1026 Base1->getType(), Base2->getType())) {
1027 if (Context.Complain) {
1028 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1029 << Context.C2.getTypeDeclType(D2);
1030 Context.Diag2(Base2->getLocStart(), diag::note_odr_base)
1032 << Base2->getSourceRange();
1033 Context.Diag1(Base1->getLocStart(), diag::note_odr_base)
1035 << Base1->getSourceRange();
1040 // Check virtual vs. non-virtual inheritance mismatch.
1041 if (Base1->isVirtual() != Base2->isVirtual()) {
1042 if (Context.Complain) {
1043 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1044 << Context.C2.getTypeDeclType(D2);
1045 Context.Diag2(Base2->getLocStart(),
1046 diag::note_odr_virtual_base)
1047 << Base2->isVirtual() << Base2->getSourceRange();
1048 Context.Diag1(Base1->getLocStart(), diag::note_odr_base)
1049 << Base1->isVirtual()
1050 << Base1->getSourceRange();
1055 } else if (D1CXX->getNumBases() > 0) {
1056 if (Context.Complain) {
1057 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1058 << Context.C2.getTypeDeclType(D2);
1059 const CXXBaseSpecifier *Base1 = D1CXX->bases_begin();
1060 Context.Diag1(Base1->getLocStart(), diag::note_odr_base)
1062 << Base1->getSourceRange();
1063 Context.Diag2(D2->getLocation(), diag::note_odr_missing_base);
1069 // Check the fields for consistency.
1070 RecordDecl::field_iterator Field2 = D2->field_begin(),
1071 Field2End = D2->field_end();
1072 for (RecordDecl::field_iterator Field1 = D1->field_begin(),
1073 Field1End = D1->field_end();
1074 Field1 != Field1End;
1075 ++Field1, ++Field2) {
1076 if (Field2 == Field2End) {
1077 if (Context.Complain) {
1078 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1079 << Context.C2.getTypeDeclType(D2);
1080 Context.Diag1(Field1->getLocation(), diag::note_odr_field)
1081 << Field1->getDeclName() << Field1->getType();
1082 Context.Diag2(D2->getLocation(), diag::note_odr_missing_field);
1087 if (!IsStructurallyEquivalent(Context, *Field1, *Field2))
1091 if (Field2 != Field2End) {
1092 if (Context.Complain) {
1093 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1094 << Context.C2.getTypeDeclType(D2);
1095 Context.Diag2(Field2->getLocation(), diag::note_odr_field)
1096 << Field2->getDeclName() << Field2->getType();
1097 Context.Diag1(D1->getLocation(), diag::note_odr_missing_field);
1105 /// \brief Determine structural equivalence of two enums.
1106 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1107 EnumDecl *D1, EnumDecl *D2) {
1108 EnumDecl::enumerator_iterator EC2 = D2->enumerator_begin(),
1109 EC2End = D2->enumerator_end();
1110 for (EnumDecl::enumerator_iterator EC1 = D1->enumerator_begin(),
1111 EC1End = D1->enumerator_end();
1112 EC1 != EC1End; ++EC1, ++EC2) {
1113 if (EC2 == EC2End) {
1114 if (Context.Complain) {
1115 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1116 << Context.C2.getTypeDeclType(D2);
1117 Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator)
1118 << EC1->getDeclName()
1119 << EC1->getInitVal().toString(10);
1120 Context.Diag2(D2->getLocation(), diag::note_odr_missing_enumerator);
1125 llvm::APSInt Val1 = EC1->getInitVal();
1126 llvm::APSInt Val2 = EC2->getInitVal();
1127 if (!llvm::APSInt::isSameValue(Val1, Val2) ||
1128 !IsStructurallyEquivalent(EC1->getIdentifier(), EC2->getIdentifier())) {
1129 if (Context.Complain) {
1130 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1131 << Context.C2.getTypeDeclType(D2);
1132 Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator)
1133 << EC2->getDeclName()
1134 << EC2->getInitVal().toString(10);
1135 Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator)
1136 << EC1->getDeclName()
1137 << EC1->getInitVal().toString(10);
1143 if (EC2 != EC2End) {
1144 if (Context.Complain) {
1145 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1146 << Context.C2.getTypeDeclType(D2);
1147 Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator)
1148 << EC2->getDeclName()
1149 << EC2->getInitVal().toString(10);
1150 Context.Diag1(D1->getLocation(), diag::note_odr_missing_enumerator);
1158 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1159 TemplateParameterList *Params1,
1160 TemplateParameterList *Params2) {
1161 if (Params1->size() != Params2->size()) {
1162 if (Context.Complain) {
1163 Context.Diag2(Params2->getTemplateLoc(),
1164 diag::err_odr_different_num_template_parameters)
1165 << Params1->size() << Params2->size();
1166 Context.Diag1(Params1->getTemplateLoc(),
1167 diag::note_odr_template_parameter_list);
1172 for (unsigned I = 0, N = Params1->size(); I != N; ++I) {
1173 if (Params1->getParam(I)->getKind() != Params2->getParam(I)->getKind()) {
1174 if (Context.Complain) {
1175 Context.Diag2(Params2->getParam(I)->getLocation(),
1176 diag::err_odr_different_template_parameter_kind);
1177 Context.Diag1(Params1->getParam(I)->getLocation(),
1178 diag::note_odr_template_parameter_here);
1183 if (!Context.IsStructurallyEquivalent(Params1->getParam(I),
1184 Params2->getParam(I))) {
1193 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1194 TemplateTypeParmDecl *D1,
1195 TemplateTypeParmDecl *D2) {
1196 if (D1->isParameterPack() != D2->isParameterPack()) {
1197 if (Context.Complain) {
1198 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
1199 << D2->isParameterPack();
1200 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
1201 << D1->isParameterPack();
1209 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1210 NonTypeTemplateParmDecl *D1,
1211 NonTypeTemplateParmDecl *D2) {
1212 if (D1->isParameterPack() != D2->isParameterPack()) {
1213 if (Context.Complain) {
1214 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
1215 << D2->isParameterPack();
1216 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
1217 << D1->isParameterPack();
1223 if (!Context.IsStructurallyEquivalent(D1->getType(), D2->getType())) {
1224 if (Context.Complain) {
1225 Context.Diag2(D2->getLocation(),
1226 diag::err_odr_non_type_parameter_type_inconsistent)
1227 << D2->getType() << D1->getType();
1228 Context.Diag1(D1->getLocation(), diag::note_odr_value_here)
1237 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1238 TemplateTemplateParmDecl *D1,
1239 TemplateTemplateParmDecl *D2) {
1240 if (D1->isParameterPack() != D2->isParameterPack()) {
1241 if (Context.Complain) {
1242 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
1243 << D2->isParameterPack();
1244 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
1245 << D1->isParameterPack();
1250 // Check template parameter lists.
1251 return IsStructurallyEquivalent(Context, D1->getTemplateParameters(),
1252 D2->getTemplateParameters());
1255 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1256 ClassTemplateDecl *D1,
1257 ClassTemplateDecl *D2) {
1258 // Check template parameters.
1259 if (!IsStructurallyEquivalent(Context,
1260 D1->getTemplateParameters(),
1261 D2->getTemplateParameters()))
1264 // Check the templated declaration.
1265 return Context.IsStructurallyEquivalent(D1->getTemplatedDecl(),
1266 D2->getTemplatedDecl());
1269 /// \brief Determine structural equivalence of two declarations.
1270 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1271 Decl *D1, Decl *D2) {
1272 // FIXME: Check for known structural equivalences via a callback of some sort.
1274 // Check whether we already know that these two declarations are not
1275 // structurally equivalent.
1276 if (Context.NonEquivalentDecls.count(std::make_pair(D1->getCanonicalDecl(),
1277 D2->getCanonicalDecl())))
1280 // Determine whether we've already produced a tentative equivalence for D1.
1281 Decl *&EquivToD1 = Context.TentativeEquivalences[D1->getCanonicalDecl()];
1283 return EquivToD1 == D2->getCanonicalDecl();
1285 // Produce a tentative equivalence D1 <-> D2, which will be checked later.
1286 EquivToD1 = D2->getCanonicalDecl();
1287 Context.DeclsToCheck.push_back(D1->getCanonicalDecl());
1291 bool StructuralEquivalenceContext::IsStructurallyEquivalent(Decl *D1,
1293 if (!::IsStructurallyEquivalent(*this, D1, D2))
1299 bool StructuralEquivalenceContext::IsStructurallyEquivalent(QualType T1,
1301 if (!::IsStructurallyEquivalent(*this, T1, T2))
1307 bool StructuralEquivalenceContext::Finish() {
1308 while (!DeclsToCheck.empty()) {
1309 // Check the next declaration.
1310 Decl *D1 = DeclsToCheck.front();
1311 DeclsToCheck.pop_front();
1313 Decl *D2 = TentativeEquivalences[D1];
1314 assert(D2 && "Unrecorded tentative equivalence?");
1316 bool Equivalent = true;
1318 // FIXME: Switch on all declaration kinds. For now, we're just going to
1319 // check the obvious ones.
1320 if (RecordDecl *Record1 = dyn_cast<RecordDecl>(D1)) {
1321 if (RecordDecl *Record2 = dyn_cast<RecordDecl>(D2)) {
1322 // Check for equivalent structure names.
1323 IdentifierInfo *Name1 = Record1->getIdentifier();
1324 if (!Name1 && Record1->getTypedefNameForAnonDecl())
1325 Name1 = Record1->getTypedefNameForAnonDecl()->getIdentifier();
1326 IdentifierInfo *Name2 = Record2->getIdentifier();
1327 if (!Name2 && Record2->getTypedefNameForAnonDecl())
1328 Name2 = Record2->getTypedefNameForAnonDecl()->getIdentifier();
1329 if (!::IsStructurallyEquivalent(Name1, Name2) ||
1330 !::IsStructurallyEquivalent(*this, Record1, Record2))
1333 // Record/non-record mismatch.
1336 } else if (EnumDecl *Enum1 = dyn_cast<EnumDecl>(D1)) {
1337 if (EnumDecl *Enum2 = dyn_cast<EnumDecl>(D2)) {
1338 // Check for equivalent enum names.
1339 IdentifierInfo *Name1 = Enum1->getIdentifier();
1340 if (!Name1 && Enum1->getTypedefNameForAnonDecl())
1341 Name1 = Enum1->getTypedefNameForAnonDecl()->getIdentifier();
1342 IdentifierInfo *Name2 = Enum2->getIdentifier();
1343 if (!Name2 && Enum2->getTypedefNameForAnonDecl())
1344 Name2 = Enum2->getTypedefNameForAnonDecl()->getIdentifier();
1345 if (!::IsStructurallyEquivalent(Name1, Name2) ||
1346 !::IsStructurallyEquivalent(*this, Enum1, Enum2))
1349 // Enum/non-enum mismatch
1352 } else if (TypedefNameDecl *Typedef1 = dyn_cast<TypedefNameDecl>(D1)) {
1353 if (TypedefNameDecl *Typedef2 = dyn_cast<TypedefNameDecl>(D2)) {
1354 if (!::IsStructurallyEquivalent(Typedef1->getIdentifier(),
1355 Typedef2->getIdentifier()) ||
1356 !::IsStructurallyEquivalent(*this,
1357 Typedef1->getUnderlyingType(),
1358 Typedef2->getUnderlyingType()))
1361 // Typedef/non-typedef mismatch.
1364 } else if (ClassTemplateDecl *ClassTemplate1
1365 = dyn_cast<ClassTemplateDecl>(D1)) {
1366 if (ClassTemplateDecl *ClassTemplate2 = dyn_cast<ClassTemplateDecl>(D2)) {
1367 if (!::IsStructurallyEquivalent(ClassTemplate1->getIdentifier(),
1368 ClassTemplate2->getIdentifier()) ||
1369 !::IsStructurallyEquivalent(*this, ClassTemplate1, ClassTemplate2))
1372 // Class template/non-class-template mismatch.
1375 } else if (TemplateTypeParmDecl *TTP1= dyn_cast<TemplateTypeParmDecl>(D1)) {
1376 if (TemplateTypeParmDecl *TTP2 = dyn_cast<TemplateTypeParmDecl>(D2)) {
1377 if (!::IsStructurallyEquivalent(*this, TTP1, TTP2))
1383 } else if (NonTypeTemplateParmDecl *NTTP1
1384 = dyn_cast<NonTypeTemplateParmDecl>(D1)) {
1385 if (NonTypeTemplateParmDecl *NTTP2
1386 = dyn_cast<NonTypeTemplateParmDecl>(D2)) {
1387 if (!::IsStructurallyEquivalent(*this, NTTP1, NTTP2))
1393 } else if (TemplateTemplateParmDecl *TTP1
1394 = dyn_cast<TemplateTemplateParmDecl>(D1)) {
1395 if (TemplateTemplateParmDecl *TTP2
1396 = dyn_cast<TemplateTemplateParmDecl>(D2)) {
1397 if (!::IsStructurallyEquivalent(*this, TTP1, TTP2))
1406 // Note that these two declarations are not equivalent (and we already
1408 NonEquivalentDecls.insert(std::make_pair(D1->getCanonicalDecl(),
1409 D2->getCanonicalDecl()));
1412 // FIXME: Check other declaration kinds!
1418 //----------------------------------------------------------------------------
1420 //----------------------------------------------------------------------------
1422 QualType ASTNodeImporter::VisitType(const Type *T) {
1423 Importer.FromDiag(SourceLocation(), diag::err_unsupported_ast_node)
1424 << T->getTypeClassName();
1428 QualType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) {
1429 switch (T->getKind()) {
1430 #define SHARED_SINGLETON_TYPE(Expansion)
1431 #define BUILTIN_TYPE(Id, SingletonId) \
1432 case BuiltinType::Id: return Importer.getToContext().SingletonId;
1433 #include "clang/AST/BuiltinTypes.def"
1435 // FIXME: for Char16, Char32, and NullPtr, make sure that the "to"
1436 // context supports C++.
1438 // FIXME: for ObjCId, ObjCClass, and ObjCSel, make sure that the "to"
1439 // context supports ObjC.
1441 case BuiltinType::Char_U:
1442 // The context we're importing from has an unsigned 'char'. If we're
1443 // importing into a context with a signed 'char', translate to
1444 // 'unsigned char' instead.
1445 if (Importer.getToContext().getLangOpts().CharIsSigned)
1446 return Importer.getToContext().UnsignedCharTy;
1448 return Importer.getToContext().CharTy;
1450 case BuiltinType::Char_S:
1451 // The context we're importing from has an unsigned 'char'. If we're
1452 // importing into a context with a signed 'char', translate to
1453 // 'unsigned char' instead.
1454 if (!Importer.getToContext().getLangOpts().CharIsSigned)
1455 return Importer.getToContext().SignedCharTy;
1457 return Importer.getToContext().CharTy;
1459 case BuiltinType::WChar_S:
1460 case BuiltinType::WChar_U:
1461 // FIXME: If not in C++, shall we translate to the C equivalent of
1463 return Importer.getToContext().WCharTy;
1466 llvm_unreachable("Invalid BuiltinType Kind!");
1469 QualType ASTNodeImporter::VisitComplexType(const ComplexType *T) {
1470 QualType ToElementType = Importer.Import(T->getElementType());
1471 if (ToElementType.isNull())
1474 return Importer.getToContext().getComplexType(ToElementType);
1477 QualType ASTNodeImporter::VisitPointerType(const PointerType *T) {
1478 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1479 if (ToPointeeType.isNull())
1482 return Importer.getToContext().getPointerType(ToPointeeType);
1485 QualType ASTNodeImporter::VisitBlockPointerType(const BlockPointerType *T) {
1486 // FIXME: Check for blocks support in "to" context.
1487 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1488 if (ToPointeeType.isNull())
1491 return Importer.getToContext().getBlockPointerType(ToPointeeType);
1495 ASTNodeImporter::VisitLValueReferenceType(const LValueReferenceType *T) {
1496 // FIXME: Check for C++ support in "to" context.
1497 QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten());
1498 if (ToPointeeType.isNull())
1501 return Importer.getToContext().getLValueReferenceType(ToPointeeType);
1505 ASTNodeImporter::VisitRValueReferenceType(const RValueReferenceType *T) {
1506 // FIXME: Check for C++0x support in "to" context.
1507 QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten());
1508 if (ToPointeeType.isNull())
1511 return Importer.getToContext().getRValueReferenceType(ToPointeeType);
1514 QualType ASTNodeImporter::VisitMemberPointerType(const MemberPointerType *T) {
1515 // FIXME: Check for C++ support in "to" context.
1516 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1517 if (ToPointeeType.isNull())
1520 QualType ClassType = Importer.Import(QualType(T->getClass(), 0));
1521 return Importer.getToContext().getMemberPointerType(ToPointeeType,
1522 ClassType.getTypePtr());
1525 QualType ASTNodeImporter::VisitConstantArrayType(const ConstantArrayType *T) {
1526 QualType ToElementType = Importer.Import(T->getElementType());
1527 if (ToElementType.isNull())
1530 return Importer.getToContext().getConstantArrayType(ToElementType,
1532 T->getSizeModifier(),
1533 T->getIndexTypeCVRQualifiers());
1537 ASTNodeImporter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
1538 QualType ToElementType = Importer.Import(T->getElementType());
1539 if (ToElementType.isNull())
1542 return Importer.getToContext().getIncompleteArrayType(ToElementType,
1543 T->getSizeModifier(),
1544 T->getIndexTypeCVRQualifiers());
1547 QualType ASTNodeImporter::VisitVariableArrayType(const VariableArrayType *T) {
1548 QualType ToElementType = Importer.Import(T->getElementType());
1549 if (ToElementType.isNull())
1552 Expr *Size = Importer.Import(T->getSizeExpr());
1556 SourceRange Brackets = Importer.Import(T->getBracketsRange());
1557 return Importer.getToContext().getVariableArrayType(ToElementType, Size,
1558 T->getSizeModifier(),
1559 T->getIndexTypeCVRQualifiers(),
1563 QualType ASTNodeImporter::VisitVectorType(const VectorType *T) {
1564 QualType ToElementType = Importer.Import(T->getElementType());
1565 if (ToElementType.isNull())
1568 return Importer.getToContext().getVectorType(ToElementType,
1569 T->getNumElements(),
1570 T->getVectorKind());
1573 QualType ASTNodeImporter::VisitExtVectorType(const ExtVectorType *T) {
1574 QualType ToElementType = Importer.Import(T->getElementType());
1575 if (ToElementType.isNull())
1578 return Importer.getToContext().getExtVectorType(ToElementType,
1579 T->getNumElements());
1583 ASTNodeImporter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
1584 // FIXME: What happens if we're importing a function without a prototype
1585 // into C++? Should we make it variadic?
1586 QualType ToResultType = Importer.Import(T->getReturnType());
1587 if (ToResultType.isNull())
1590 return Importer.getToContext().getFunctionNoProtoType(ToResultType,
1594 QualType ASTNodeImporter::VisitFunctionProtoType(const FunctionProtoType *T) {
1595 QualType ToResultType = Importer.Import(T->getReturnType());
1596 if (ToResultType.isNull())
1599 // Import argument types
1600 SmallVector<QualType, 4> ArgTypes;
1601 for (const auto &A : T->param_types()) {
1602 QualType ArgType = Importer.Import(A);
1603 if (ArgType.isNull())
1605 ArgTypes.push_back(ArgType);
1608 // Import exception types
1609 SmallVector<QualType, 4> ExceptionTypes;
1610 for (const auto &E : T->exceptions()) {
1611 QualType ExceptionType = Importer.Import(E);
1612 if (ExceptionType.isNull())
1614 ExceptionTypes.push_back(ExceptionType);
1617 FunctionProtoType::ExtProtoInfo FromEPI = T->getExtProtoInfo();
1618 FunctionProtoType::ExtProtoInfo ToEPI;
1620 ToEPI.ExtInfo = FromEPI.ExtInfo;
1621 ToEPI.Variadic = FromEPI.Variadic;
1622 ToEPI.HasTrailingReturn = FromEPI.HasTrailingReturn;
1623 ToEPI.TypeQuals = FromEPI.TypeQuals;
1624 ToEPI.RefQualifier = FromEPI.RefQualifier;
1625 ToEPI.NumExceptions = ExceptionTypes.size();
1626 ToEPI.Exceptions = ExceptionTypes.data();
1627 ToEPI.ConsumedParameters = FromEPI.ConsumedParameters;
1628 ToEPI.ExceptionSpecType = FromEPI.ExceptionSpecType;
1629 ToEPI.NoexceptExpr = Importer.Import(FromEPI.NoexceptExpr);
1630 ToEPI.ExceptionSpecDecl = cast_or_null<FunctionDecl>(
1631 Importer.Import(FromEPI.ExceptionSpecDecl));
1632 ToEPI.ExceptionSpecTemplate = cast_or_null<FunctionDecl>(
1633 Importer.Import(FromEPI.ExceptionSpecTemplate));
1635 return Importer.getToContext().getFunctionType(ToResultType, ArgTypes, ToEPI);
1638 QualType ASTNodeImporter::VisitParenType(const ParenType *T) {
1639 QualType ToInnerType = Importer.Import(T->getInnerType());
1640 if (ToInnerType.isNull())
1643 return Importer.getToContext().getParenType(ToInnerType);
1646 QualType ASTNodeImporter::VisitTypedefType(const TypedefType *T) {
1647 TypedefNameDecl *ToDecl
1648 = dyn_cast_or_null<TypedefNameDecl>(Importer.Import(T->getDecl()));
1652 return Importer.getToContext().getTypeDeclType(ToDecl);
1655 QualType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) {
1656 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr());
1660 return Importer.getToContext().getTypeOfExprType(ToExpr);
1663 QualType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) {
1664 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType());
1665 if (ToUnderlyingType.isNull())
1668 return Importer.getToContext().getTypeOfType(ToUnderlyingType);
1671 QualType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) {
1672 // FIXME: Make sure that the "to" context supports C++0x!
1673 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr());
1677 QualType UnderlyingType = Importer.Import(T->getUnderlyingType());
1678 if (UnderlyingType.isNull())
1681 return Importer.getToContext().getDecltypeType(ToExpr, UnderlyingType);
1684 QualType ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) {
1685 QualType ToBaseType = Importer.Import(T->getBaseType());
1686 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType());
1687 if (ToBaseType.isNull() || ToUnderlyingType.isNull())
1690 return Importer.getToContext().getUnaryTransformType(ToBaseType,
1695 QualType ASTNodeImporter::VisitAutoType(const AutoType *T) {
1696 // FIXME: Make sure that the "to" context supports C++11!
1697 QualType FromDeduced = T->getDeducedType();
1699 if (!FromDeduced.isNull()) {
1700 ToDeduced = Importer.Import(FromDeduced);
1701 if (ToDeduced.isNull())
1705 return Importer.getToContext().getAutoType(ToDeduced, T->isDecltypeAuto(),
1706 /*IsDependent*/false);
1709 QualType ASTNodeImporter::VisitRecordType(const RecordType *T) {
1711 = dyn_cast_or_null<RecordDecl>(Importer.Import(T->getDecl()));
1715 return Importer.getToContext().getTagDeclType(ToDecl);
1718 QualType ASTNodeImporter::VisitEnumType(const EnumType *T) {
1720 = dyn_cast_or_null<EnumDecl>(Importer.Import(T->getDecl()));
1724 return Importer.getToContext().getTagDeclType(ToDecl);
1727 QualType ASTNodeImporter::VisitTemplateSpecializationType(
1728 const TemplateSpecializationType *T) {
1729 TemplateName ToTemplate = Importer.Import(T->getTemplateName());
1730 if (ToTemplate.isNull())
1733 SmallVector<TemplateArgument, 2> ToTemplateArgs;
1734 if (ImportTemplateArguments(T->getArgs(), T->getNumArgs(), ToTemplateArgs))
1737 QualType ToCanonType;
1738 if (!QualType(T, 0).isCanonical()) {
1739 QualType FromCanonType
1740 = Importer.getFromContext().getCanonicalType(QualType(T, 0));
1741 ToCanonType =Importer.Import(FromCanonType);
1742 if (ToCanonType.isNull())
1745 return Importer.getToContext().getTemplateSpecializationType(ToTemplate,
1746 ToTemplateArgs.data(),
1747 ToTemplateArgs.size(),
1751 QualType ASTNodeImporter::VisitElaboratedType(const ElaboratedType *T) {
1752 NestedNameSpecifier *ToQualifier = nullptr;
1753 // Note: the qualifier in an ElaboratedType is optional.
1754 if (T->getQualifier()) {
1755 ToQualifier = Importer.Import(T->getQualifier());
1760 QualType ToNamedType = Importer.Import(T->getNamedType());
1761 if (ToNamedType.isNull())
1764 return Importer.getToContext().getElaboratedType(T->getKeyword(),
1765 ToQualifier, ToNamedType);
1768 QualType ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
1769 ObjCInterfaceDecl *Class
1770 = dyn_cast_or_null<ObjCInterfaceDecl>(Importer.Import(T->getDecl()));
1774 return Importer.getToContext().getObjCInterfaceType(Class);
1777 QualType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) {
1778 QualType ToBaseType = Importer.Import(T->getBaseType());
1779 if (ToBaseType.isNull())
1782 SmallVector<ObjCProtocolDecl *, 4> Protocols;
1783 for (auto *P : T->quals()) {
1784 ObjCProtocolDecl *Protocol
1785 = dyn_cast_or_null<ObjCProtocolDecl>(Importer.Import(P));
1788 Protocols.push_back(Protocol);
1791 return Importer.getToContext().getObjCObjectType(ToBaseType,
1797 ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
1798 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1799 if (ToPointeeType.isNull())
1802 return Importer.getToContext().getObjCObjectPointerType(ToPointeeType);
1805 //----------------------------------------------------------------------------
1806 // Import Declarations
1807 //----------------------------------------------------------------------------
1808 bool ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclContext *&DC,
1809 DeclContext *&LexicalDC,
1810 DeclarationName &Name,
1811 SourceLocation &Loc) {
1812 // Import the context of this declaration.
1813 DC = Importer.ImportContext(D->getDeclContext());
1818 if (D->getDeclContext() != D->getLexicalDeclContext()) {
1819 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
1824 // Import the name of this declaration.
1825 Name = Importer.Import(D->getDeclName());
1826 if (D->getDeclName() && !Name)
1829 // Import the location of this declaration.
1830 Loc = Importer.Import(D->getLocation());
1834 void ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) {
1839 ToD = Importer.Import(FromD);
1844 if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(FromD)) {
1845 if (RecordDecl *ToRecord = cast_or_null<RecordDecl>(ToD)) {
1846 if (FromRecord->getDefinition() && FromRecord->isCompleteDefinition() && !ToRecord->getDefinition()) {
1847 ImportDefinition(FromRecord, ToRecord);
1853 if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(FromD)) {
1854 if (EnumDecl *ToEnum = cast_or_null<EnumDecl>(ToD)) {
1855 if (FromEnum->getDefinition() && !ToEnum->getDefinition()) {
1856 ImportDefinition(FromEnum, ToEnum);
1864 ASTNodeImporter::ImportDeclarationNameLoc(const DeclarationNameInfo &From,
1865 DeclarationNameInfo& To) {
1866 // NOTE: To.Name and To.Loc are already imported.
1867 // We only have to import To.LocInfo.
1868 switch (To.getName().getNameKind()) {
1869 case DeclarationName::Identifier:
1870 case DeclarationName::ObjCZeroArgSelector:
1871 case DeclarationName::ObjCOneArgSelector:
1872 case DeclarationName::ObjCMultiArgSelector:
1873 case DeclarationName::CXXUsingDirective:
1876 case DeclarationName::CXXOperatorName: {
1877 SourceRange Range = From.getCXXOperatorNameRange();
1878 To.setCXXOperatorNameRange(Importer.Import(Range));
1881 case DeclarationName::CXXLiteralOperatorName: {
1882 SourceLocation Loc = From.getCXXLiteralOperatorNameLoc();
1883 To.setCXXLiteralOperatorNameLoc(Importer.Import(Loc));
1886 case DeclarationName::CXXConstructorName:
1887 case DeclarationName::CXXDestructorName:
1888 case DeclarationName::CXXConversionFunctionName: {
1889 TypeSourceInfo *FromTInfo = From.getNamedTypeInfo();
1890 To.setNamedTypeInfo(Importer.Import(FromTInfo));
1894 llvm_unreachable("Unknown name kind.");
1897 void ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) {
1898 if (Importer.isMinimalImport() && !ForceImport) {
1899 Importer.ImportContext(FromDC);
1903 for (auto *From : FromDC->decls())
1904 Importer.Import(From);
1907 bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To,
1908 ImportDefinitionKind Kind) {
1909 if (To->getDefinition() || To->isBeingDefined()) {
1910 if (Kind == IDK_Everything)
1911 ImportDeclContext(From, /*ForceImport=*/true);
1916 To->startDefinition();
1918 // Add base classes.
1919 if (CXXRecordDecl *ToCXX = dyn_cast<CXXRecordDecl>(To)) {
1920 CXXRecordDecl *FromCXX = cast<CXXRecordDecl>(From);
1922 struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data();
1923 struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data();
1924 ToData.UserDeclaredConstructor = FromData.UserDeclaredConstructor;
1925 ToData.UserDeclaredSpecialMembers = FromData.UserDeclaredSpecialMembers;
1926 ToData.Aggregate = FromData.Aggregate;
1927 ToData.PlainOldData = FromData.PlainOldData;
1928 ToData.Empty = FromData.Empty;
1929 ToData.Polymorphic = FromData.Polymorphic;
1930 ToData.Abstract = FromData.Abstract;
1931 ToData.IsStandardLayout = FromData.IsStandardLayout;
1932 ToData.HasNoNonEmptyBases = FromData.HasNoNonEmptyBases;
1933 ToData.HasPrivateFields = FromData.HasPrivateFields;
1934 ToData.HasProtectedFields = FromData.HasProtectedFields;
1935 ToData.HasPublicFields = FromData.HasPublicFields;
1936 ToData.HasMutableFields = FromData.HasMutableFields;
1937 ToData.HasVariantMembers = FromData.HasVariantMembers;
1938 ToData.HasOnlyCMembers = FromData.HasOnlyCMembers;
1939 ToData.HasInClassInitializer = FromData.HasInClassInitializer;
1940 ToData.HasUninitializedReferenceMember
1941 = FromData.HasUninitializedReferenceMember;
1942 ToData.NeedOverloadResolutionForMoveConstructor
1943 = FromData.NeedOverloadResolutionForMoveConstructor;
1944 ToData.NeedOverloadResolutionForMoveAssignment
1945 = FromData.NeedOverloadResolutionForMoveAssignment;
1946 ToData.NeedOverloadResolutionForDestructor
1947 = FromData.NeedOverloadResolutionForDestructor;
1948 ToData.DefaultedMoveConstructorIsDeleted
1949 = FromData.DefaultedMoveConstructorIsDeleted;
1950 ToData.DefaultedMoveAssignmentIsDeleted
1951 = FromData.DefaultedMoveAssignmentIsDeleted;
1952 ToData.DefaultedDestructorIsDeleted = FromData.DefaultedDestructorIsDeleted;
1953 ToData.HasTrivialSpecialMembers = FromData.HasTrivialSpecialMembers;
1954 ToData.HasIrrelevantDestructor = FromData.HasIrrelevantDestructor;
1955 ToData.HasConstexprNonCopyMoveConstructor
1956 = FromData.HasConstexprNonCopyMoveConstructor;
1957 ToData.DefaultedDefaultConstructorIsConstexpr
1958 = FromData.DefaultedDefaultConstructorIsConstexpr;
1959 ToData.HasConstexprDefaultConstructor
1960 = FromData.HasConstexprDefaultConstructor;
1961 ToData.HasNonLiteralTypeFieldsOrBases
1962 = FromData.HasNonLiteralTypeFieldsOrBases;
1963 // ComputedVisibleConversions not imported.
1964 ToData.UserProvidedDefaultConstructor
1965 = FromData.UserProvidedDefaultConstructor;
1966 ToData.DeclaredSpecialMembers = FromData.DeclaredSpecialMembers;
1967 ToData.ImplicitCopyConstructorHasConstParam
1968 = FromData.ImplicitCopyConstructorHasConstParam;
1969 ToData.ImplicitCopyAssignmentHasConstParam
1970 = FromData.ImplicitCopyAssignmentHasConstParam;
1971 ToData.HasDeclaredCopyConstructorWithConstParam
1972 = FromData.HasDeclaredCopyConstructorWithConstParam;
1973 ToData.HasDeclaredCopyAssignmentWithConstParam
1974 = FromData.HasDeclaredCopyAssignmentWithConstParam;
1975 ToData.IsLambda = FromData.IsLambda;
1977 SmallVector<CXXBaseSpecifier *, 4> Bases;
1978 for (const auto &Base1 : FromCXX->bases()) {
1979 QualType T = Importer.Import(Base1.getType());
1983 SourceLocation EllipsisLoc;
1984 if (Base1.isPackExpansion())
1985 EllipsisLoc = Importer.Import(Base1.getEllipsisLoc());
1987 // Ensure that we have a definition for the base.
1988 ImportDefinitionIfNeeded(Base1.getType()->getAsCXXRecordDecl());
1991 new (Importer.getToContext())
1992 CXXBaseSpecifier(Importer.Import(Base1.getSourceRange()),
1994 Base1.isBaseOfClass(),
1995 Base1.getAccessSpecifierAsWritten(),
1996 Importer.Import(Base1.getTypeSourceInfo()),
2000 ToCXX->setBases(Bases.data(), Bases.size());
2003 if (shouldForceImportDeclContext(Kind))
2004 ImportDeclContext(From, /*ForceImport=*/true);
2006 To->completeDefinition();
2010 bool ASTNodeImporter::ImportDefinition(VarDecl *From, VarDecl *To,
2011 ImportDefinitionKind Kind) {
2012 if (To->getDefinition())
2015 // FIXME: Can we really import any initializer? Alternatively, we could force
2016 // ourselves to import every declaration of a variable and then only use
2018 To->setInit(Importer.Import(const_cast<Expr *>(From->getAnyInitializer())));
2020 // FIXME: Other bits to merge?
2025 bool ASTNodeImporter::ImportDefinition(EnumDecl *From, EnumDecl *To,
2026 ImportDefinitionKind Kind) {
2027 if (To->getDefinition() || To->isBeingDefined()) {
2028 if (Kind == IDK_Everything)
2029 ImportDeclContext(From, /*ForceImport=*/true);
2033 To->startDefinition();
2035 QualType T = Importer.Import(Importer.getFromContext().getTypeDeclType(From));
2039 QualType ToPromotionType = Importer.Import(From->getPromotionType());
2040 if (ToPromotionType.isNull())
2043 if (shouldForceImportDeclContext(Kind))
2044 ImportDeclContext(From, /*ForceImport=*/true);
2046 // FIXME: we might need to merge the number of positive or negative bits
2047 // if the enumerator lists don't match.
2048 To->completeDefinition(T, ToPromotionType,
2049 From->getNumPositiveBits(),
2050 From->getNumNegativeBits());
2054 TemplateParameterList *ASTNodeImporter::ImportTemplateParameterList(
2055 TemplateParameterList *Params) {
2056 SmallVector<NamedDecl *, 4> ToParams;
2057 ToParams.reserve(Params->size());
2058 for (TemplateParameterList::iterator P = Params->begin(),
2059 PEnd = Params->end();
2061 Decl *To = Importer.Import(*P);
2065 ToParams.push_back(cast<NamedDecl>(To));
2068 return TemplateParameterList::Create(Importer.getToContext(),
2069 Importer.Import(Params->getTemplateLoc()),
2070 Importer.Import(Params->getLAngleLoc()),
2071 ToParams.data(), ToParams.size(),
2072 Importer.Import(Params->getRAngleLoc()));
2076 ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) {
2077 switch (From.getKind()) {
2078 case TemplateArgument::Null:
2079 return TemplateArgument();
2081 case TemplateArgument::Type: {
2082 QualType ToType = Importer.Import(From.getAsType());
2083 if (ToType.isNull())
2084 return TemplateArgument();
2085 return TemplateArgument(ToType);
2088 case TemplateArgument::Integral: {
2089 QualType ToType = Importer.Import(From.getIntegralType());
2090 if (ToType.isNull())
2091 return TemplateArgument();
2092 return TemplateArgument(From, ToType);
2095 case TemplateArgument::Declaration: {
2096 ValueDecl *FromD = From.getAsDecl();
2097 if (ValueDecl *To = cast_or_null<ValueDecl>(Importer.Import(FromD)))
2098 return TemplateArgument(To, From.isDeclForReferenceParam());
2099 return TemplateArgument();
2102 case TemplateArgument::NullPtr: {
2103 QualType ToType = Importer.Import(From.getNullPtrType());
2104 if (ToType.isNull())
2105 return TemplateArgument();
2106 return TemplateArgument(ToType, /*isNullPtr*/true);
2109 case TemplateArgument::Template: {
2110 TemplateName ToTemplate = Importer.Import(From.getAsTemplate());
2111 if (ToTemplate.isNull())
2112 return TemplateArgument();
2114 return TemplateArgument(ToTemplate);
2117 case TemplateArgument::TemplateExpansion: {
2118 TemplateName ToTemplate
2119 = Importer.Import(From.getAsTemplateOrTemplatePattern());
2120 if (ToTemplate.isNull())
2121 return TemplateArgument();
2123 return TemplateArgument(ToTemplate, From.getNumTemplateExpansions());
2126 case TemplateArgument::Expression:
2127 if (Expr *ToExpr = Importer.Import(From.getAsExpr()))
2128 return TemplateArgument(ToExpr);
2129 return TemplateArgument();
2131 case TemplateArgument::Pack: {
2132 SmallVector<TemplateArgument, 2> ToPack;
2133 ToPack.reserve(From.pack_size());
2134 if (ImportTemplateArguments(From.pack_begin(), From.pack_size(), ToPack))
2135 return TemplateArgument();
2137 TemplateArgument *ToArgs
2138 = new (Importer.getToContext()) TemplateArgument[ToPack.size()];
2139 std::copy(ToPack.begin(), ToPack.end(), ToArgs);
2140 return TemplateArgument(ToArgs, ToPack.size());
2144 llvm_unreachable("Invalid template argument kind");
2147 bool ASTNodeImporter::ImportTemplateArguments(const TemplateArgument *FromArgs,
2148 unsigned NumFromArgs,
2149 SmallVectorImpl<TemplateArgument> &ToArgs) {
2150 for (unsigned I = 0; I != NumFromArgs; ++I) {
2151 TemplateArgument To = ImportTemplateArgument(FromArgs[I]);
2152 if (To.isNull() && !FromArgs[I].isNull())
2155 ToArgs.push_back(To);
2161 bool ASTNodeImporter::IsStructuralMatch(RecordDecl *FromRecord,
2162 RecordDecl *ToRecord, bool Complain) {
2163 // Eliminate a potential failure point where we attempt to re-import
2164 // something we're trying to import while completing ToRecord.
2165 Decl *ToOrigin = Importer.GetOriginalDecl(ToRecord);
2167 RecordDecl *ToOriginRecord = dyn_cast<RecordDecl>(ToOrigin);
2169 ToRecord = ToOriginRecord;
2172 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2173 ToRecord->getASTContext(),
2174 Importer.getNonEquivalentDecls(),
2176 return Ctx.IsStructurallyEquivalent(FromRecord, ToRecord);
2179 bool ASTNodeImporter::IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
2181 StructuralEquivalenceContext Ctx(
2182 Importer.getFromContext(), Importer.getToContext(),
2183 Importer.getNonEquivalentDecls(), false, Complain);
2184 return Ctx.IsStructurallyEquivalent(FromVar, ToVar);
2187 bool ASTNodeImporter::IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToEnum) {
2188 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2189 Importer.getToContext(),
2190 Importer.getNonEquivalentDecls());
2191 return Ctx.IsStructurallyEquivalent(FromEnum, ToEnum);
2194 bool ASTNodeImporter::IsStructuralMatch(EnumConstantDecl *FromEC,
2195 EnumConstantDecl *ToEC)
2197 const llvm::APSInt &FromVal = FromEC->getInitVal();
2198 const llvm::APSInt &ToVal = ToEC->getInitVal();
2200 return FromVal.isSigned() == ToVal.isSigned() &&
2201 FromVal.getBitWidth() == ToVal.getBitWidth() &&
2205 bool ASTNodeImporter::IsStructuralMatch(ClassTemplateDecl *From,
2206 ClassTemplateDecl *To) {
2207 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2208 Importer.getToContext(),
2209 Importer.getNonEquivalentDecls());
2210 return Ctx.IsStructurallyEquivalent(From, To);
2213 bool ASTNodeImporter::IsStructuralMatch(VarTemplateDecl *From,
2214 VarTemplateDecl *To) {
2215 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2216 Importer.getToContext(),
2217 Importer.getNonEquivalentDecls());
2218 return Ctx.IsStructurallyEquivalent(From, To);
2221 Decl *ASTNodeImporter::VisitDecl(Decl *D) {
2222 Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
2223 << D->getDeclKindName();
2227 Decl *ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
2228 TranslationUnitDecl *ToD =
2229 Importer.getToContext().getTranslationUnitDecl();
2231 Importer.Imported(D, ToD);
2236 Decl *ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) {
2237 // Import the major distinguishing characteristics of this namespace.
2238 DeclContext *DC, *LexicalDC;
2239 DeclarationName Name;
2241 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2244 NamespaceDecl *MergeWithNamespace = nullptr;
2246 // This is an anonymous namespace. Adopt an existing anonymous
2247 // namespace if we can.
2248 // FIXME: Not testable.
2249 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC))
2250 MergeWithNamespace = TU->getAnonymousNamespace();
2252 MergeWithNamespace = cast<NamespaceDecl>(DC)->getAnonymousNamespace();
2254 SmallVector<NamedDecl *, 4> ConflictingDecls;
2255 SmallVector<NamedDecl *, 2> FoundDecls;
2256 DC->localUncachedLookup(Name, FoundDecls);
2257 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2258 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Namespace))
2261 if (NamespaceDecl *FoundNS = dyn_cast<NamespaceDecl>(FoundDecls[I])) {
2262 MergeWithNamespace = FoundNS;
2263 ConflictingDecls.clear();
2267 ConflictingDecls.push_back(FoundDecls[I]);
2270 if (!ConflictingDecls.empty()) {
2271 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Namespace,
2272 ConflictingDecls.data(),
2273 ConflictingDecls.size());
2277 // Create the "to" namespace, if needed.
2278 NamespaceDecl *ToNamespace = MergeWithNamespace;
2280 ToNamespace = NamespaceDecl::Create(Importer.getToContext(), DC,
2282 Importer.Import(D->getLocStart()),
2283 Loc, Name.getAsIdentifierInfo(),
2284 /*PrevDecl=*/nullptr);
2285 ToNamespace->setLexicalDeclContext(LexicalDC);
2286 LexicalDC->addDeclInternal(ToNamespace);
2288 // If this is an anonymous namespace, register it as the anonymous
2289 // namespace within its context.
2291 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC))
2292 TU->setAnonymousNamespace(ToNamespace);
2294 cast<NamespaceDecl>(DC)->setAnonymousNamespace(ToNamespace);
2297 Importer.Imported(D, ToNamespace);
2299 ImportDeclContext(D);
2304 Decl *ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) {
2305 // Import the major distinguishing characteristics of this typedef.
2306 DeclContext *DC, *LexicalDC;
2307 DeclarationName Name;
2309 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2312 // If this typedef is not in block scope, determine whether we've
2313 // seen a typedef with the same name (that we can merge with) or any
2314 // other entity by that name (which name lookup could conflict with).
2315 if (!DC->isFunctionOrMethod()) {
2316 SmallVector<NamedDecl *, 4> ConflictingDecls;
2317 unsigned IDNS = Decl::IDNS_Ordinary;
2318 SmallVector<NamedDecl *, 2> FoundDecls;
2319 DC->localUncachedLookup(Name, FoundDecls);
2320 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2321 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2323 if (TypedefNameDecl *FoundTypedef =
2324 dyn_cast<TypedefNameDecl>(FoundDecls[I])) {
2325 if (Importer.IsStructurallyEquivalent(D->getUnderlyingType(),
2326 FoundTypedef->getUnderlyingType()))
2327 return Importer.Imported(D, FoundTypedef);
2330 ConflictingDecls.push_back(FoundDecls[I]);
2333 if (!ConflictingDecls.empty()) {
2334 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2335 ConflictingDecls.data(),
2336 ConflictingDecls.size());
2342 // Import the underlying type of this typedef;
2343 QualType T = Importer.Import(D->getUnderlyingType());
2347 // Create the new typedef node.
2348 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
2349 SourceLocation StartL = Importer.Import(D->getLocStart());
2350 TypedefNameDecl *ToTypedef;
2352 ToTypedef = TypeAliasDecl::Create(Importer.getToContext(), DC,
2354 Name.getAsIdentifierInfo(),
2357 ToTypedef = TypedefDecl::Create(Importer.getToContext(), DC,
2359 Name.getAsIdentifierInfo(),
2362 ToTypedef->setAccess(D->getAccess());
2363 ToTypedef->setLexicalDeclContext(LexicalDC);
2364 Importer.Imported(D, ToTypedef);
2365 LexicalDC->addDeclInternal(ToTypedef);
2370 Decl *ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) {
2371 return VisitTypedefNameDecl(D, /*IsAlias=*/false);
2374 Decl *ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) {
2375 return VisitTypedefNameDecl(D, /*IsAlias=*/true);
2378 Decl *ASTNodeImporter::VisitEnumDecl(EnumDecl *D) {
2379 // Import the major distinguishing characteristics of this enum.
2380 DeclContext *DC, *LexicalDC;
2381 DeclarationName Name;
2383 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2386 // Figure out what enum name we're looking for.
2387 unsigned IDNS = Decl::IDNS_Tag;
2388 DeclarationName SearchName = Name;
2389 if (!SearchName && D->getTypedefNameForAnonDecl()) {
2390 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName());
2391 IDNS = Decl::IDNS_Ordinary;
2392 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
2393 IDNS |= Decl::IDNS_Ordinary;
2395 // We may already have an enum of the same name; try to find and match it.
2396 if (!DC->isFunctionOrMethod() && SearchName) {
2397 SmallVector<NamedDecl *, 4> ConflictingDecls;
2398 SmallVector<NamedDecl *, 2> FoundDecls;
2399 DC->localUncachedLookup(SearchName, FoundDecls);
2400 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2401 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2404 Decl *Found = FoundDecls[I];
2405 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
2406 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
2407 Found = Tag->getDecl();
2410 if (EnumDecl *FoundEnum = dyn_cast<EnumDecl>(Found)) {
2411 if (IsStructuralMatch(D, FoundEnum))
2412 return Importer.Imported(D, FoundEnum);
2415 ConflictingDecls.push_back(FoundDecls[I]);
2418 if (!ConflictingDecls.empty()) {
2419 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2420 ConflictingDecls.data(),
2421 ConflictingDecls.size());
2425 // Create the enum declaration.
2426 EnumDecl *D2 = EnumDecl::Create(Importer.getToContext(), DC,
2427 Importer.Import(D->getLocStart()),
2428 Loc, Name.getAsIdentifierInfo(), nullptr,
2429 D->isScoped(), D->isScopedUsingClassTag(),
2431 // Import the qualifier, if any.
2432 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2433 D2->setAccess(D->getAccess());
2434 D2->setLexicalDeclContext(LexicalDC);
2435 Importer.Imported(D, D2);
2436 LexicalDC->addDeclInternal(D2);
2438 // Import the integer type.
2439 QualType ToIntegerType = Importer.Import(D->getIntegerType());
2440 if (ToIntegerType.isNull())
2442 D2->setIntegerType(ToIntegerType);
2444 // Import the definition
2445 if (D->isCompleteDefinition() && ImportDefinition(D, D2))
2451 Decl *ASTNodeImporter::VisitRecordDecl(RecordDecl *D) {
2452 // If this record has a definition in the translation unit we're coming from,
2453 // but this particular declaration is not that definition, import the
2454 // definition and map to that.
2455 TagDecl *Definition = D->getDefinition();
2456 if (Definition && Definition != D) {
2457 Decl *ImportedDef = Importer.Import(Definition);
2461 return Importer.Imported(D, ImportedDef);
2464 // Import the major distinguishing characteristics of this record.
2465 DeclContext *DC, *LexicalDC;
2466 DeclarationName Name;
2468 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2471 // Figure out what structure name we're looking for.
2472 unsigned IDNS = Decl::IDNS_Tag;
2473 DeclarationName SearchName = Name;
2474 if (!SearchName && D->getTypedefNameForAnonDecl()) {
2475 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName());
2476 IDNS = Decl::IDNS_Ordinary;
2477 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
2478 IDNS |= Decl::IDNS_Ordinary;
2480 // We may already have a record of the same name; try to find and match it.
2481 RecordDecl *AdoptDecl = nullptr;
2482 if (!DC->isFunctionOrMethod()) {
2483 SmallVector<NamedDecl *, 4> ConflictingDecls;
2484 SmallVector<NamedDecl *, 2> FoundDecls;
2485 DC->localUncachedLookup(SearchName, FoundDecls);
2486 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2487 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2490 Decl *Found = FoundDecls[I];
2491 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
2492 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
2493 Found = Tag->getDecl();
2496 if (RecordDecl *FoundRecord = dyn_cast<RecordDecl>(Found)) {
2497 if (D->isAnonymousStructOrUnion() &&
2498 FoundRecord->isAnonymousStructOrUnion()) {
2499 // If both anonymous structs/unions are in a record context, make sure
2500 // they occur in the same location in the context records.
2501 if (Optional<unsigned> Index1
2502 = findAnonymousStructOrUnionIndex(D)) {
2503 if (Optional<unsigned> Index2 =
2504 findAnonymousStructOrUnionIndex(FoundRecord)) {
2505 if (*Index1 != *Index2)
2511 if (RecordDecl *FoundDef = FoundRecord->getDefinition()) {
2512 if ((SearchName && !D->isCompleteDefinition())
2513 || (D->isCompleteDefinition() &&
2514 D->isAnonymousStructOrUnion()
2515 == FoundDef->isAnonymousStructOrUnion() &&
2516 IsStructuralMatch(D, FoundDef))) {
2517 // The record types structurally match, or the "from" translation
2518 // unit only had a forward declaration anyway; call it the same
2520 // FIXME: For C++, we should also merge methods here.
2521 return Importer.Imported(D, FoundDef);
2523 } else if (!D->isCompleteDefinition()) {
2524 // We have a forward declaration of this type, so adopt that forward
2525 // declaration rather than building a new one.
2527 // If one or both can be completed from external storage then try one
2528 // last time to complete and compare them before doing this.
2530 if (FoundRecord->hasExternalLexicalStorage() &&
2531 !FoundRecord->isCompleteDefinition())
2532 FoundRecord->getASTContext().getExternalSource()->CompleteType(FoundRecord);
2533 if (D->hasExternalLexicalStorage())
2534 D->getASTContext().getExternalSource()->CompleteType(D);
2536 if (FoundRecord->isCompleteDefinition() &&
2537 D->isCompleteDefinition() &&
2538 !IsStructuralMatch(D, FoundRecord))
2541 AdoptDecl = FoundRecord;
2543 } else if (!SearchName) {
2548 ConflictingDecls.push_back(FoundDecls[I]);
2551 if (!ConflictingDecls.empty() && SearchName) {
2552 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2553 ConflictingDecls.data(),
2554 ConflictingDecls.size());
2558 // Create the record declaration.
2559 RecordDecl *D2 = AdoptDecl;
2560 SourceLocation StartLoc = Importer.Import(D->getLocStart());
2562 if (isa<CXXRecordDecl>(D)) {
2563 CXXRecordDecl *D2CXX = CXXRecordDecl::Create(Importer.getToContext(),
2566 Name.getAsIdentifierInfo());
2568 D2->setAccess(D->getAccess());
2570 D2 = RecordDecl::Create(Importer.getToContext(), D->getTagKind(),
2571 DC, StartLoc, Loc, Name.getAsIdentifierInfo());
2574 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2575 D2->setLexicalDeclContext(LexicalDC);
2576 LexicalDC->addDeclInternal(D2);
2577 if (D->isAnonymousStructOrUnion())
2578 D2->setAnonymousStructOrUnion(true);
2581 Importer.Imported(D, D2);
2583 if (D->isCompleteDefinition() && ImportDefinition(D, D2, IDK_Default))
2589 Decl *ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) {
2590 // Import the major distinguishing characteristics of this enumerator.
2591 DeclContext *DC, *LexicalDC;
2592 DeclarationName Name;
2594 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2597 QualType T = Importer.Import(D->getType());
2601 // Determine whether there are any other declarations with the same name and
2602 // in the same context.
2603 if (!LexicalDC->isFunctionOrMethod()) {
2604 SmallVector<NamedDecl *, 4> ConflictingDecls;
2605 unsigned IDNS = Decl::IDNS_Ordinary;
2606 SmallVector<NamedDecl *, 2> FoundDecls;
2607 DC->localUncachedLookup(Name, FoundDecls);
2608 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2609 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2612 if (EnumConstantDecl *FoundEnumConstant
2613 = dyn_cast<EnumConstantDecl>(FoundDecls[I])) {
2614 if (IsStructuralMatch(D, FoundEnumConstant))
2615 return Importer.Imported(D, FoundEnumConstant);
2618 ConflictingDecls.push_back(FoundDecls[I]);
2621 if (!ConflictingDecls.empty()) {
2622 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2623 ConflictingDecls.data(),
2624 ConflictingDecls.size());
2630 Expr *Init = Importer.Import(D->getInitExpr());
2631 if (D->getInitExpr() && !Init)
2634 EnumConstantDecl *ToEnumerator
2635 = EnumConstantDecl::Create(Importer.getToContext(), cast<EnumDecl>(DC), Loc,
2636 Name.getAsIdentifierInfo(), T,
2637 Init, D->getInitVal());
2638 ToEnumerator->setAccess(D->getAccess());
2639 ToEnumerator->setLexicalDeclContext(LexicalDC);
2640 Importer.Imported(D, ToEnumerator);
2641 LexicalDC->addDeclInternal(ToEnumerator);
2642 return ToEnumerator;
2645 Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
2646 // Import the major distinguishing characteristics of this function.
2647 DeclContext *DC, *LexicalDC;
2648 DeclarationName Name;
2650 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2653 // Try to find a function in our own ("to") context with the same name, same
2654 // type, and in the same context as the function we're importing.
2655 if (!LexicalDC->isFunctionOrMethod()) {
2656 SmallVector<NamedDecl *, 4> ConflictingDecls;
2657 unsigned IDNS = Decl::IDNS_Ordinary;
2658 SmallVector<NamedDecl *, 2> FoundDecls;
2659 DC->localUncachedLookup(Name, FoundDecls);
2660 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2661 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2664 if (FunctionDecl *FoundFunction = dyn_cast<FunctionDecl>(FoundDecls[I])) {
2665 if (FoundFunction->hasExternalFormalLinkage() &&
2666 D->hasExternalFormalLinkage()) {
2667 if (Importer.IsStructurallyEquivalent(D->getType(),
2668 FoundFunction->getType())) {
2669 // FIXME: Actually try to merge the body and other attributes.
2670 return Importer.Imported(D, FoundFunction);
2673 // FIXME: Check for overloading more carefully, e.g., by boosting
2674 // Sema::IsOverload out to the AST library.
2676 // Function overloading is okay in C++.
2677 if (Importer.getToContext().getLangOpts().CPlusPlus)
2680 // Complain about inconsistent function types.
2681 Importer.ToDiag(Loc, diag::err_odr_function_type_inconsistent)
2682 << Name << D->getType() << FoundFunction->getType();
2683 Importer.ToDiag(FoundFunction->getLocation(),
2684 diag::note_odr_value_here)
2685 << FoundFunction->getType();
2689 ConflictingDecls.push_back(FoundDecls[I]);
2692 if (!ConflictingDecls.empty()) {
2693 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2694 ConflictingDecls.data(),
2695 ConflictingDecls.size());
2701 DeclarationNameInfo NameInfo(Name, Loc);
2702 // Import additional name location/type info.
2703 ImportDeclarationNameLoc(D->getNameInfo(), NameInfo);
2705 QualType FromTy = D->getType();
2706 bool usedDifferentExceptionSpec = false;
2708 if (const FunctionProtoType *
2709 FromFPT = D->getType()->getAs<FunctionProtoType>()) {
2710 FunctionProtoType::ExtProtoInfo FromEPI = FromFPT->getExtProtoInfo();
2711 // FunctionProtoType::ExtProtoInfo's ExceptionSpecDecl can point to the
2712 // FunctionDecl that we are importing the FunctionProtoType for.
2713 // To avoid an infinite recursion when importing, create the FunctionDecl
2714 // with a simplified function type and update it afterwards.
2715 if (FromEPI.ExceptionSpecDecl || FromEPI.ExceptionSpecTemplate ||
2716 FromEPI.NoexceptExpr) {
2717 FunctionProtoType::ExtProtoInfo DefaultEPI;
2718 FromTy = Importer.getFromContext().getFunctionType(
2719 FromFPT->getReturnType(), FromFPT->getParamTypes(), DefaultEPI);
2720 usedDifferentExceptionSpec = true;
2725 QualType T = Importer.Import(FromTy);
2729 // Import the function parameters.
2730 SmallVector<ParmVarDecl *, 8> Parameters;
2731 for (auto P : D->params()) {
2732 ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(P));
2736 Parameters.push_back(ToP);
2739 // Create the imported function.
2740 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
2741 FunctionDecl *ToFunction = nullptr;
2742 if (CXXConstructorDecl *FromConstructor = dyn_cast<CXXConstructorDecl>(D)) {
2743 ToFunction = CXXConstructorDecl::Create(Importer.getToContext(),
2744 cast<CXXRecordDecl>(DC),
2745 D->getInnerLocStart(),
2747 FromConstructor->isExplicit(),
2748 D->isInlineSpecified(),
2751 } else if (isa<CXXDestructorDecl>(D)) {
2752 ToFunction = CXXDestructorDecl::Create(Importer.getToContext(),
2753 cast<CXXRecordDecl>(DC),
2754 D->getInnerLocStart(),
2756 D->isInlineSpecified(),
2758 } else if (CXXConversionDecl *FromConversion
2759 = dyn_cast<CXXConversionDecl>(D)) {
2760 ToFunction = CXXConversionDecl::Create(Importer.getToContext(),
2761 cast<CXXRecordDecl>(DC),
2762 D->getInnerLocStart(),
2764 D->isInlineSpecified(),
2765 FromConversion->isExplicit(),
2767 Importer.Import(D->getLocEnd()));
2768 } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
2769 ToFunction = CXXMethodDecl::Create(Importer.getToContext(),
2770 cast<CXXRecordDecl>(DC),
2771 D->getInnerLocStart(),
2773 Method->getStorageClass(),
2774 Method->isInlineSpecified(),
2776 Importer.Import(D->getLocEnd()));
2778 ToFunction = FunctionDecl::Create(Importer.getToContext(), DC,
2779 D->getInnerLocStart(),
2780 NameInfo, T, TInfo, D->getStorageClass(),
2781 D->isInlineSpecified(),
2782 D->hasWrittenPrototype(),
2786 // Import the qualifier, if any.
2787 ToFunction->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2788 ToFunction->setAccess(D->getAccess());
2789 ToFunction->setLexicalDeclContext(LexicalDC);
2790 ToFunction->setVirtualAsWritten(D->isVirtualAsWritten());
2791 ToFunction->setTrivial(D->isTrivial());
2792 ToFunction->setPure(D->isPure());
2793 Importer.Imported(D, ToFunction);
2795 // Set the parameters.
2796 for (unsigned I = 0, N = Parameters.size(); I != N; ++I) {
2797 Parameters[I]->setOwningFunction(ToFunction);
2798 ToFunction->addDeclInternal(Parameters[I]);
2800 ToFunction->setParams(Parameters);
2802 if (usedDifferentExceptionSpec) {
2803 // Update FunctionProtoType::ExtProtoInfo.
2804 QualType T = Importer.Import(D->getType());
2807 ToFunction->setType(T);
2810 // FIXME: Other bits to merge?
2812 // Add this function to the lexical context.
2813 LexicalDC->addDeclInternal(ToFunction);
2818 Decl *ASTNodeImporter::VisitCXXMethodDecl(CXXMethodDecl *D) {
2819 return VisitFunctionDecl(D);
2822 Decl *ASTNodeImporter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
2823 return VisitCXXMethodDecl(D);
2826 Decl *ASTNodeImporter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
2827 return VisitCXXMethodDecl(D);
2830 Decl *ASTNodeImporter::VisitCXXConversionDecl(CXXConversionDecl *D) {
2831 return VisitCXXMethodDecl(D);
2834 static unsigned getFieldIndex(Decl *F) {
2835 RecordDecl *Owner = dyn_cast<RecordDecl>(F->getDeclContext());
2840 for (const auto *D : Owner->noload_decls()) {
2844 if (isa<FieldDecl>(*D) || isa<IndirectFieldDecl>(*D))
2851 Decl *ASTNodeImporter::VisitFieldDecl(FieldDecl *D) {
2852 // Import the major distinguishing characteristics of a variable.
2853 DeclContext *DC, *LexicalDC;
2854 DeclarationName Name;
2856 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2859 // Determine whether we've already imported this field.
2860 SmallVector<NamedDecl *, 2> FoundDecls;
2861 DC->localUncachedLookup(Name, FoundDecls);
2862 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2863 if (FieldDecl *FoundField = dyn_cast<FieldDecl>(FoundDecls[I])) {
2864 // For anonymous fields, match up by index.
2865 if (!Name && getFieldIndex(D) != getFieldIndex(FoundField))
2868 if (Importer.IsStructurallyEquivalent(D->getType(),
2869 FoundField->getType())) {
2870 Importer.Imported(D, FoundField);
2874 Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent)
2875 << Name << D->getType() << FoundField->getType();
2876 Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here)
2877 << FoundField->getType();
2883 QualType T = Importer.Import(D->getType());
2887 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
2888 Expr *BitWidth = Importer.Import(D->getBitWidth());
2889 if (!BitWidth && D->getBitWidth())
2892 FieldDecl *ToField = FieldDecl::Create(Importer.getToContext(), DC,
2893 Importer.Import(D->getInnerLocStart()),
2894 Loc, Name.getAsIdentifierInfo(),
2895 T, TInfo, BitWidth, D->isMutable(),
2896 D->getInClassInitStyle());
2897 ToField->setAccess(D->getAccess());
2898 ToField->setLexicalDeclContext(LexicalDC);
2899 if (ToField->hasInClassInitializer())
2900 ToField->setInClassInitializer(D->getInClassInitializer());
2901 ToField->setImplicit(D->isImplicit());
2902 Importer.Imported(D, ToField);
2903 LexicalDC->addDeclInternal(ToField);
2907 Decl *ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
2908 // Import the major distinguishing characteristics of a variable.
2909 DeclContext *DC, *LexicalDC;
2910 DeclarationName Name;
2912 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2915 // Determine whether we've already imported this field.
2916 SmallVector<NamedDecl *, 2> FoundDecls;
2917 DC->localUncachedLookup(Name, FoundDecls);
2918 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2919 if (IndirectFieldDecl *FoundField
2920 = dyn_cast<IndirectFieldDecl>(FoundDecls[I])) {
2921 // For anonymous indirect fields, match up by index.
2922 if (!Name && getFieldIndex(D) != getFieldIndex(FoundField))
2925 if (Importer.IsStructurallyEquivalent(D->getType(),
2926 FoundField->getType(),
2928 Importer.Imported(D, FoundField);
2932 // If there are more anonymous fields to check, continue.
2933 if (!Name && I < N-1)
2936 Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent)
2937 << Name << D->getType() << FoundField->getType();
2938 Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here)
2939 << FoundField->getType();
2945 QualType T = Importer.Import(D->getType());
2949 NamedDecl **NamedChain =
2950 new (Importer.getToContext())NamedDecl*[D->getChainingSize()];
2953 for (auto *PI : D->chain()) {
2954 Decl *D = Importer.Import(PI);
2957 NamedChain[i++] = cast<NamedDecl>(D);
2960 IndirectFieldDecl *ToIndirectField = IndirectFieldDecl::Create(
2961 Importer.getToContext(), DC,
2962 Loc, Name.getAsIdentifierInfo(), T,
2963 NamedChain, D->getChainingSize());
2964 ToIndirectField->setAccess(D->getAccess());
2965 ToIndirectField->setLexicalDeclContext(LexicalDC);
2966 Importer.Imported(D, ToIndirectField);
2967 LexicalDC->addDeclInternal(ToIndirectField);
2968 return ToIndirectField;
2971 Decl *ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
2972 // Import the major distinguishing characteristics of an ivar.
2973 DeclContext *DC, *LexicalDC;
2974 DeclarationName Name;
2976 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2979 // Determine whether we've already imported this ivar
2980 SmallVector<NamedDecl *, 2> FoundDecls;
2981 DC->localUncachedLookup(Name, FoundDecls);
2982 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2983 if (ObjCIvarDecl *FoundIvar = dyn_cast<ObjCIvarDecl>(FoundDecls[I])) {
2984 if (Importer.IsStructurallyEquivalent(D->getType(),
2985 FoundIvar->getType())) {
2986 Importer.Imported(D, FoundIvar);
2990 Importer.ToDiag(Loc, diag::err_odr_ivar_type_inconsistent)
2991 << Name << D->getType() << FoundIvar->getType();
2992 Importer.ToDiag(FoundIvar->getLocation(), diag::note_odr_value_here)
2993 << FoundIvar->getType();
2999 QualType T = Importer.Import(D->getType());
3003 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3004 Expr *BitWidth = Importer.Import(D->getBitWidth());
3005 if (!BitWidth && D->getBitWidth())
3008 ObjCIvarDecl *ToIvar = ObjCIvarDecl::Create(Importer.getToContext(),
3009 cast<ObjCContainerDecl>(DC),
3010 Importer.Import(D->getInnerLocStart()),
3011 Loc, Name.getAsIdentifierInfo(),
3012 T, TInfo, D->getAccessControl(),
3013 BitWidth, D->getSynthesize());
3014 ToIvar->setLexicalDeclContext(LexicalDC);
3015 Importer.Imported(D, ToIvar);
3016 LexicalDC->addDeclInternal(ToIvar);
3021 Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) {
3022 // Import the major distinguishing characteristics of a variable.
3023 DeclContext *DC, *LexicalDC;
3024 DeclarationName Name;
3026 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3029 // Try to find a variable in our own ("to") context with the same name and
3030 // in the same context as the variable we're importing.
3031 if (D->isFileVarDecl()) {
3032 VarDecl *MergeWithVar = nullptr;
3033 SmallVector<NamedDecl *, 4> ConflictingDecls;
3034 unsigned IDNS = Decl::IDNS_Ordinary;
3035 SmallVector<NamedDecl *, 2> FoundDecls;
3036 DC->localUncachedLookup(Name, FoundDecls);
3037 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3038 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
3041 if (VarDecl *FoundVar = dyn_cast<VarDecl>(FoundDecls[I])) {
3042 // We have found a variable that we may need to merge with. Check it.
3043 if (FoundVar->hasExternalFormalLinkage() &&
3044 D->hasExternalFormalLinkage()) {
3045 if (Importer.IsStructurallyEquivalent(D->getType(),
3046 FoundVar->getType())) {
3047 MergeWithVar = FoundVar;
3051 const ArrayType *FoundArray
3052 = Importer.getToContext().getAsArrayType(FoundVar->getType());
3053 const ArrayType *TArray
3054 = Importer.getToContext().getAsArrayType(D->getType());
3055 if (FoundArray && TArray) {
3056 if (isa<IncompleteArrayType>(FoundArray) &&
3057 isa<ConstantArrayType>(TArray)) {
3059 QualType T = Importer.Import(D->getType());
3063 FoundVar->setType(T);
3064 MergeWithVar = FoundVar;
3066 } else if (isa<IncompleteArrayType>(TArray) &&
3067 isa<ConstantArrayType>(FoundArray)) {
3068 MergeWithVar = FoundVar;
3073 Importer.ToDiag(Loc, diag::err_odr_variable_type_inconsistent)
3074 << Name << D->getType() << FoundVar->getType();
3075 Importer.ToDiag(FoundVar->getLocation(), diag::note_odr_value_here)
3076 << FoundVar->getType();
3080 ConflictingDecls.push_back(FoundDecls[I]);
3084 // An equivalent variable with external linkage has been found. Link
3085 // the two declarations, then merge them.
3086 Importer.Imported(D, MergeWithVar);
3088 if (VarDecl *DDef = D->getDefinition()) {
3089 if (VarDecl *ExistingDef = MergeWithVar->getDefinition()) {
3090 Importer.ToDiag(ExistingDef->getLocation(),
3091 diag::err_odr_variable_multiple_def)
3093 Importer.FromDiag(DDef->getLocation(), diag::note_odr_defined_here);
3095 Expr *Init = Importer.Import(DDef->getInit());
3096 MergeWithVar->setInit(Init);
3097 if (DDef->isInitKnownICE()) {
3098 EvaluatedStmt *Eval = MergeWithVar->ensureEvaluatedStmt();
3099 Eval->CheckedICE = true;
3100 Eval->IsICE = DDef->isInitICE();
3105 return MergeWithVar;
3108 if (!ConflictingDecls.empty()) {
3109 Name = Importer.HandleNameConflict(Name, DC, IDNS,
3110 ConflictingDecls.data(),
3111 ConflictingDecls.size());
3118 QualType T = Importer.Import(D->getType());
3122 // Create the imported variable.
3123 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3124 VarDecl *ToVar = VarDecl::Create(Importer.getToContext(), DC,
3125 Importer.Import(D->getInnerLocStart()),
3126 Loc, Name.getAsIdentifierInfo(),
3128 D->getStorageClass());
3129 ToVar->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
3130 ToVar->setAccess(D->getAccess());
3131 ToVar->setLexicalDeclContext(LexicalDC);
3132 Importer.Imported(D, ToVar);
3133 LexicalDC->addDeclInternal(ToVar);
3135 // Merge the initializer.
3136 if (ImportDefinition(D, ToVar))
3142 Decl *ASTNodeImporter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
3143 // Parameters are created in the translation unit's context, then moved
3144 // into the function declaration's context afterward.
3145 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
3147 // Import the name of this declaration.
3148 DeclarationName Name = Importer.Import(D->getDeclName());
3149 if (D->getDeclName() && !Name)
3152 // Import the location of this declaration.
3153 SourceLocation Loc = Importer.Import(D->getLocation());
3155 // Import the parameter's type.
3156 QualType T = Importer.Import(D->getType());
3160 // Create the imported parameter.
3161 ImplicitParamDecl *ToParm
3162 = ImplicitParamDecl::Create(Importer.getToContext(), DC,
3163 Loc, Name.getAsIdentifierInfo(),
3165 return Importer.Imported(D, ToParm);
3168 Decl *ASTNodeImporter::VisitParmVarDecl(ParmVarDecl *D) {
3169 // Parameters are created in the translation unit's context, then moved
3170 // into the function declaration's context afterward.
3171 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
3173 // Import the name of this declaration.
3174 DeclarationName Name = Importer.Import(D->getDeclName());
3175 if (D->getDeclName() && !Name)
3178 // Import the location of this declaration.
3179 SourceLocation Loc = Importer.Import(D->getLocation());
3181 // Import the parameter's type.
3182 QualType T = Importer.Import(D->getType());
3186 // Create the imported parameter.
3187 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3188 ParmVarDecl *ToParm = ParmVarDecl::Create(Importer.getToContext(), DC,
3189 Importer.Import(D->getInnerLocStart()),
3190 Loc, Name.getAsIdentifierInfo(),
3191 T, TInfo, D->getStorageClass(),
3192 /*FIXME: Default argument*/nullptr);
3193 ToParm->setHasInheritedDefaultArg(D->hasInheritedDefaultArg());
3194 return Importer.Imported(D, ToParm);
3197 Decl *ASTNodeImporter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
3198 // Import the major distinguishing characteristics of a method.
3199 DeclContext *DC, *LexicalDC;
3200 DeclarationName Name;
3202 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3205 SmallVector<NamedDecl *, 2> FoundDecls;
3206 DC->localUncachedLookup(Name, FoundDecls);
3207 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3208 if (ObjCMethodDecl *FoundMethod = dyn_cast<ObjCMethodDecl>(FoundDecls[I])) {
3209 if (FoundMethod->isInstanceMethod() != D->isInstanceMethod())
3212 // Check return types.
3213 if (!Importer.IsStructurallyEquivalent(D->getReturnType(),
3214 FoundMethod->getReturnType())) {
3215 Importer.ToDiag(Loc, diag::err_odr_objc_method_result_type_inconsistent)
3216 << D->isInstanceMethod() << Name << D->getReturnType()
3217 << FoundMethod->getReturnType();
3218 Importer.ToDiag(FoundMethod->getLocation(),
3219 diag::note_odr_objc_method_here)
3220 << D->isInstanceMethod() << Name;
3224 // Check the number of parameters.
3225 if (D->param_size() != FoundMethod->param_size()) {
3226 Importer.ToDiag(Loc, diag::err_odr_objc_method_num_params_inconsistent)
3227 << D->isInstanceMethod() << Name
3228 << D->param_size() << FoundMethod->param_size();
3229 Importer.ToDiag(FoundMethod->getLocation(),
3230 diag::note_odr_objc_method_here)
3231 << D->isInstanceMethod() << Name;
3235 // Check parameter types.
3236 for (ObjCMethodDecl::param_iterator P = D->param_begin(),
3237 PEnd = D->param_end(), FoundP = FoundMethod->param_begin();
3238 P != PEnd; ++P, ++FoundP) {
3239 if (!Importer.IsStructurallyEquivalent((*P)->getType(),
3240 (*FoundP)->getType())) {
3241 Importer.FromDiag((*P)->getLocation(),
3242 diag::err_odr_objc_method_param_type_inconsistent)
3243 << D->isInstanceMethod() << Name
3244 << (*P)->getType() << (*FoundP)->getType();
3245 Importer.ToDiag((*FoundP)->getLocation(), diag::note_odr_value_here)
3246 << (*FoundP)->getType();
3251 // Check variadic/non-variadic.
3252 // Check the number of parameters.
3253 if (D->isVariadic() != FoundMethod->isVariadic()) {
3254 Importer.ToDiag(Loc, diag::err_odr_objc_method_variadic_inconsistent)
3255 << D->isInstanceMethod() << Name;
3256 Importer.ToDiag(FoundMethod->getLocation(),
3257 diag::note_odr_objc_method_here)
3258 << D->isInstanceMethod() << Name;
3262 // FIXME: Any other bits we need to merge?
3263 return Importer.Imported(D, FoundMethod);
3267 // Import the result type.
3268 QualType ResultTy = Importer.Import(D->getReturnType());
3269 if (ResultTy.isNull())
3272 TypeSourceInfo *ReturnTInfo = Importer.Import(D->getReturnTypeSourceInfo());
3274 ObjCMethodDecl *ToMethod = ObjCMethodDecl::Create(
3275 Importer.getToContext(), Loc, Importer.Import(D->getLocEnd()),
3276 Name.getObjCSelector(), ResultTy, ReturnTInfo, DC, D->isInstanceMethod(),
3277 D->isVariadic(), D->isPropertyAccessor(), D->isImplicit(), D->isDefined(),
3278 D->getImplementationControl(), D->hasRelatedResultType());
3280 // FIXME: When we decide to merge method definitions, we'll need to
3281 // deal with implicit parameters.
3283 // Import the parameters
3284 SmallVector<ParmVarDecl *, 5> ToParams;
3285 for (auto *FromP : D->params()) {
3286 ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(FromP));
3290 ToParams.push_back(ToP);
3293 // Set the parameters.
3294 for (unsigned I = 0, N = ToParams.size(); I != N; ++I) {
3295 ToParams[I]->setOwningFunction(ToMethod);
3296 ToMethod->addDeclInternal(ToParams[I]);
3298 SmallVector<SourceLocation, 12> SelLocs;
3299 D->getSelectorLocs(SelLocs);
3300 ToMethod->setMethodParams(Importer.getToContext(), ToParams, SelLocs);
3302 ToMethod->setLexicalDeclContext(LexicalDC);
3303 Importer.Imported(D, ToMethod);
3304 LexicalDC->addDeclInternal(ToMethod);
3308 Decl *ASTNodeImporter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
3309 // Import the major distinguishing characteristics of a category.
3310 DeclContext *DC, *LexicalDC;
3311 DeclarationName Name;
3313 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3316 ObjCInterfaceDecl *ToInterface
3317 = cast_or_null<ObjCInterfaceDecl>(Importer.Import(D->getClassInterface()));
3321 // Determine if we've already encountered this category.
3322 ObjCCategoryDecl *MergeWithCategory
3323 = ToInterface->FindCategoryDeclaration(Name.getAsIdentifierInfo());
3324 ObjCCategoryDecl *ToCategory = MergeWithCategory;
3326 ToCategory = ObjCCategoryDecl::Create(Importer.getToContext(), DC,
3327 Importer.Import(D->getAtStartLoc()),
3329 Importer.Import(D->getCategoryNameLoc()),
3330 Name.getAsIdentifierInfo(),
3332 Importer.Import(D->getIvarLBraceLoc()),
3333 Importer.Import(D->getIvarRBraceLoc()));
3334 ToCategory->setLexicalDeclContext(LexicalDC);
3335 LexicalDC->addDeclInternal(ToCategory);
3336 Importer.Imported(D, ToCategory);
3339 SmallVector<ObjCProtocolDecl *, 4> Protocols;
3340 SmallVector<SourceLocation, 4> ProtocolLocs;
3341 ObjCCategoryDecl::protocol_loc_iterator FromProtoLoc
3342 = D->protocol_loc_begin();
3343 for (ObjCCategoryDecl::protocol_iterator FromProto = D->protocol_begin(),
3344 FromProtoEnd = D->protocol_end();
3345 FromProto != FromProtoEnd;
3346 ++FromProto, ++FromProtoLoc) {
3347 ObjCProtocolDecl *ToProto
3348 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto));
3351 Protocols.push_back(ToProto);
3352 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc));
3355 // FIXME: If we're merging, make sure that the protocol list is the same.
3356 ToCategory->setProtocolList(Protocols.data(), Protocols.size(),
3357 ProtocolLocs.data(), Importer.getToContext());
3360 Importer.Imported(D, ToCategory);
3363 // Import all of the members of this category.
3364 ImportDeclContext(D);
3366 // If we have an implementation, import it as well.
3367 if (D->getImplementation()) {
3368 ObjCCategoryImplDecl *Impl
3369 = cast_or_null<ObjCCategoryImplDecl>(
3370 Importer.Import(D->getImplementation()));
3374 ToCategory->setImplementation(Impl);
3380 bool ASTNodeImporter::ImportDefinition(ObjCProtocolDecl *From,
3381 ObjCProtocolDecl *To,
3382 ImportDefinitionKind Kind) {
3383 if (To->getDefinition()) {
3384 if (shouldForceImportDeclContext(Kind))
3385 ImportDeclContext(From);
3389 // Start the protocol definition
3390 To->startDefinition();
3393 SmallVector<ObjCProtocolDecl *, 4> Protocols;
3394 SmallVector<SourceLocation, 4> ProtocolLocs;
3395 ObjCProtocolDecl::protocol_loc_iterator
3396 FromProtoLoc = From->protocol_loc_begin();
3397 for (ObjCProtocolDecl::protocol_iterator FromProto = From->protocol_begin(),
3398 FromProtoEnd = From->protocol_end();
3399 FromProto != FromProtoEnd;
3400 ++FromProto, ++FromProtoLoc) {
3401 ObjCProtocolDecl *ToProto
3402 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto));
3405 Protocols.push_back(ToProto);
3406 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc));
3409 // FIXME: If we're merging, make sure that the protocol list is the same.
3410 To->setProtocolList(Protocols.data(), Protocols.size(),
3411 ProtocolLocs.data(), Importer.getToContext());
3413 if (shouldForceImportDeclContext(Kind)) {
3414 // Import all of the members of this protocol.
3415 ImportDeclContext(From, /*ForceImport=*/true);
3420 Decl *ASTNodeImporter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
3421 // If this protocol has a definition in the translation unit we're coming
3422 // from, but this particular declaration is not that definition, import the
3423 // definition and map to that.
3424 ObjCProtocolDecl *Definition = D->getDefinition();
3425 if (Definition && Definition != D) {
3426 Decl *ImportedDef = Importer.Import(Definition);
3430 return Importer.Imported(D, ImportedDef);
3433 // Import the major distinguishing characteristics of a protocol.
3434 DeclContext *DC, *LexicalDC;
3435 DeclarationName Name;
3437 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3440 ObjCProtocolDecl *MergeWithProtocol = nullptr;
3441 SmallVector<NamedDecl *, 2> FoundDecls;
3442 DC->localUncachedLookup(Name, FoundDecls);
3443 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3444 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_ObjCProtocol))
3447 if ((MergeWithProtocol = dyn_cast<ObjCProtocolDecl>(FoundDecls[I])))
3451 ObjCProtocolDecl *ToProto = MergeWithProtocol;
3453 ToProto = ObjCProtocolDecl::Create(Importer.getToContext(), DC,
3454 Name.getAsIdentifierInfo(), Loc,
3455 Importer.Import(D->getAtStartLoc()),
3456 /*PrevDecl=*/nullptr);
3457 ToProto->setLexicalDeclContext(LexicalDC);
3458 LexicalDC->addDeclInternal(ToProto);
3461 Importer.Imported(D, ToProto);
3463 if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToProto))
3469 bool ASTNodeImporter::ImportDefinition(ObjCInterfaceDecl *From,
3470 ObjCInterfaceDecl *To,
3471 ImportDefinitionKind Kind) {
3472 if (To->getDefinition()) {
3473 // Check consistency of superclass.
3474 ObjCInterfaceDecl *FromSuper = From->getSuperClass();
3476 FromSuper = cast_or_null<ObjCInterfaceDecl>(Importer.Import(FromSuper));
3481 ObjCInterfaceDecl *ToSuper = To->getSuperClass();
3482 if ((bool)FromSuper != (bool)ToSuper ||
3483 (FromSuper && !declaresSameEntity(FromSuper, ToSuper))) {
3484 Importer.ToDiag(To->getLocation(),
3485 diag::err_odr_objc_superclass_inconsistent)
3486 << To->getDeclName();
3488 Importer.ToDiag(To->getSuperClassLoc(), diag::note_odr_objc_superclass)
3489 << To->getSuperClass()->getDeclName();
3491 Importer.ToDiag(To->getLocation(),
3492 diag::note_odr_objc_missing_superclass);
3493 if (From->getSuperClass())
3494 Importer.FromDiag(From->getSuperClassLoc(),
3495 diag::note_odr_objc_superclass)
3496 << From->getSuperClass()->getDeclName();
3498 Importer.FromDiag(From->getLocation(),
3499 diag::note_odr_objc_missing_superclass);
3502 if (shouldForceImportDeclContext(Kind))
3503 ImportDeclContext(From);
3507 // Start the definition.
3508 To->startDefinition();
3510 // If this class has a superclass, import it.
3511 if (From->getSuperClass()) {
3512 ObjCInterfaceDecl *Super = cast_or_null<ObjCInterfaceDecl>(
3513 Importer.Import(From->getSuperClass()));
3517 To->setSuperClass(Super);
3518 To->setSuperClassLoc(Importer.Import(From->getSuperClassLoc()));
3522 SmallVector<ObjCProtocolDecl *, 4> Protocols;
3523 SmallVector<SourceLocation, 4> ProtocolLocs;
3524 ObjCInterfaceDecl::protocol_loc_iterator
3525 FromProtoLoc = From->protocol_loc_begin();
3527 for (ObjCInterfaceDecl::protocol_iterator FromProto = From->protocol_begin(),
3528 FromProtoEnd = From->protocol_end();
3529 FromProto != FromProtoEnd;
3530 ++FromProto, ++FromProtoLoc) {
3531 ObjCProtocolDecl *ToProto
3532 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto));
3535 Protocols.push_back(ToProto);
3536 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc));
3539 // FIXME: If we're merging, make sure that the protocol list is the same.
3540 To->setProtocolList(Protocols.data(), Protocols.size(),
3541 ProtocolLocs.data(), Importer.getToContext());
3543 // Import categories. When the categories themselves are imported, they'll
3544 // hook themselves into this interface.
3545 for (auto *Cat : From->known_categories())
3546 Importer.Import(Cat);
3548 // If we have an @implementation, import it as well.
3549 if (From->getImplementation()) {
3550 ObjCImplementationDecl *Impl = cast_or_null<ObjCImplementationDecl>(
3551 Importer.Import(From->getImplementation()));
3555 To->setImplementation(Impl);
3558 if (shouldForceImportDeclContext(Kind)) {
3559 // Import all of the members of this class.
3560 ImportDeclContext(From, /*ForceImport=*/true);
3565 Decl *ASTNodeImporter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
3566 // If this class has a definition in the translation unit we're coming from,
3567 // but this particular declaration is not that definition, import the
3568 // definition and map to that.
3569 ObjCInterfaceDecl *Definition = D->getDefinition();
3570 if (Definition && Definition != D) {
3571 Decl *ImportedDef = Importer.Import(Definition);
3575 return Importer.Imported(D, ImportedDef);
3578 // Import the major distinguishing characteristics of an @interface.
3579 DeclContext *DC, *LexicalDC;
3580 DeclarationName Name;
3582 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3585 // Look for an existing interface with the same name.
3586 ObjCInterfaceDecl *MergeWithIface = nullptr;
3587 SmallVector<NamedDecl *, 2> FoundDecls;
3588 DC->localUncachedLookup(Name, FoundDecls);
3589 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3590 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
3593 if ((MergeWithIface = dyn_cast<ObjCInterfaceDecl>(FoundDecls[I])))
3597 // Create an interface declaration, if one does not already exist.
3598 ObjCInterfaceDecl *ToIface = MergeWithIface;
3600 ToIface = ObjCInterfaceDecl::Create(Importer.getToContext(), DC,
3601 Importer.Import(D->getAtStartLoc()),
3602 Name.getAsIdentifierInfo(),
3603 /*PrevDecl=*/nullptr, Loc,
3604 D->isImplicitInterfaceDecl());
3605 ToIface->setLexicalDeclContext(LexicalDC);
3606 LexicalDC->addDeclInternal(ToIface);
3608 Importer.Imported(D, ToIface);
3610 if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToIface))
3616 Decl *ASTNodeImporter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
3617 ObjCCategoryDecl *Category = cast_or_null<ObjCCategoryDecl>(
3618 Importer.Import(D->getCategoryDecl()));
3622 ObjCCategoryImplDecl *ToImpl = Category->getImplementation();
3624 DeclContext *DC = Importer.ImportContext(D->getDeclContext());
3628 SourceLocation CategoryNameLoc = Importer.Import(D->getCategoryNameLoc());
3629 ToImpl = ObjCCategoryImplDecl::Create(Importer.getToContext(), DC,
3630 Importer.Import(D->getIdentifier()),
3631 Category->getClassInterface(),
3632 Importer.Import(D->getLocation()),
3633 Importer.Import(D->getAtStartLoc()),
3636 DeclContext *LexicalDC = DC;
3637 if (D->getDeclContext() != D->getLexicalDeclContext()) {
3638 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
3642 ToImpl->setLexicalDeclContext(LexicalDC);
3645 LexicalDC->addDeclInternal(ToImpl);
3646 Category->setImplementation(ToImpl);
3649 Importer.Imported(D, ToImpl);
3650 ImportDeclContext(D);
3654 Decl *ASTNodeImporter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
3655 // Find the corresponding interface.
3656 ObjCInterfaceDecl *Iface = cast_or_null<ObjCInterfaceDecl>(
3657 Importer.Import(D->getClassInterface()));
3661 // Import the superclass, if any.
3662 ObjCInterfaceDecl *Super = nullptr;
3663 if (D->getSuperClass()) {
3664 Super = cast_or_null<ObjCInterfaceDecl>(
3665 Importer.Import(D->getSuperClass()));
3670 ObjCImplementationDecl *Impl = Iface->getImplementation();
3672 // We haven't imported an implementation yet. Create a new @implementation
3674 Impl = ObjCImplementationDecl::Create(Importer.getToContext(),
3675 Importer.ImportContext(D->getDeclContext()),
3677 Importer.Import(D->getLocation()),
3678 Importer.Import(D->getAtStartLoc()),
3679 Importer.Import(D->getSuperClassLoc()),
3680 Importer.Import(D->getIvarLBraceLoc()),
3681 Importer.Import(D->getIvarRBraceLoc()));
3683 if (D->getDeclContext() != D->getLexicalDeclContext()) {
3684 DeclContext *LexicalDC
3685 = Importer.ImportContext(D->getLexicalDeclContext());
3688 Impl->setLexicalDeclContext(LexicalDC);
3691 // Associate the implementation with the class it implements.
3692 Iface->setImplementation(Impl);
3693 Importer.Imported(D, Iface->getImplementation());
3695 Importer.Imported(D, Iface->getImplementation());
3697 // Verify that the existing @implementation has the same superclass.
3698 if ((Super && !Impl->getSuperClass()) ||
3699 (!Super && Impl->getSuperClass()) ||
3700 (Super && Impl->getSuperClass() &&
3701 !declaresSameEntity(Super->getCanonicalDecl(),
3702 Impl->getSuperClass()))) {
3703 Importer.ToDiag(Impl->getLocation(),
3704 diag::err_odr_objc_superclass_inconsistent)
3705 << Iface->getDeclName();
3706 // FIXME: It would be nice to have the location of the superclass
3708 if (Impl->getSuperClass())
3709 Importer.ToDiag(Impl->getLocation(),
3710 diag::note_odr_objc_superclass)
3711 << Impl->getSuperClass()->getDeclName();
3713 Importer.ToDiag(Impl->getLocation(),
3714 diag::note_odr_objc_missing_superclass);
3715 if (D->getSuperClass())
3716 Importer.FromDiag(D->getLocation(),
3717 diag::note_odr_objc_superclass)
3718 << D->getSuperClass()->getDeclName();
3720 Importer.FromDiag(D->getLocation(),
3721 diag::note_odr_objc_missing_superclass);
3726 // Import all of the members of this @implementation.
3727 ImportDeclContext(D);
3732 Decl *ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
3733 // Import the major distinguishing characteristics of an @property.
3734 DeclContext *DC, *LexicalDC;
3735 DeclarationName Name;
3737 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3740 // Check whether we have already imported this property.
3741 SmallVector<NamedDecl *, 2> FoundDecls;
3742 DC->localUncachedLookup(Name, FoundDecls);
3743 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3744 if (ObjCPropertyDecl *FoundProp
3745 = dyn_cast<ObjCPropertyDecl>(FoundDecls[I])) {
3746 // Check property types.
3747 if (!Importer.IsStructurallyEquivalent(D->getType(),
3748 FoundProp->getType())) {
3749 Importer.ToDiag(Loc, diag::err_odr_objc_property_type_inconsistent)
3750 << Name << D->getType() << FoundProp->getType();
3751 Importer.ToDiag(FoundProp->getLocation(), diag::note_odr_value_here)
3752 << FoundProp->getType();
3756 // FIXME: Check property attributes, getters, setters, etc.?
3758 // Consider these properties to be equivalent.
3759 Importer.Imported(D, FoundProp);
3765 TypeSourceInfo *T = Importer.Import(D->getTypeSourceInfo());
3769 // Create the new property.
3770 ObjCPropertyDecl *ToProperty
3771 = ObjCPropertyDecl::Create(Importer.getToContext(), DC, Loc,
3772 Name.getAsIdentifierInfo(),
3773 Importer.Import(D->getAtLoc()),
3774 Importer.Import(D->getLParenLoc()),
3776 D->getPropertyImplementation());
3777 Importer.Imported(D, ToProperty);
3778 ToProperty->setLexicalDeclContext(LexicalDC);
3779 LexicalDC->addDeclInternal(ToProperty);
3781 ToProperty->setPropertyAttributes(D->getPropertyAttributes());
3782 ToProperty->setPropertyAttributesAsWritten(
3783 D->getPropertyAttributesAsWritten());
3784 ToProperty->setGetterName(Importer.Import(D->getGetterName()));
3785 ToProperty->setSetterName(Importer.Import(D->getSetterName()));
3786 ToProperty->setGetterMethodDecl(
3787 cast_or_null<ObjCMethodDecl>(Importer.Import(D->getGetterMethodDecl())));
3788 ToProperty->setSetterMethodDecl(
3789 cast_or_null<ObjCMethodDecl>(Importer.Import(D->getSetterMethodDecl())));
3790 ToProperty->setPropertyIvarDecl(
3791 cast_or_null<ObjCIvarDecl>(Importer.Import(D->getPropertyIvarDecl())));
3795 Decl *ASTNodeImporter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
3796 ObjCPropertyDecl *Property = cast_or_null<ObjCPropertyDecl>(
3797 Importer.Import(D->getPropertyDecl()));
3801 DeclContext *DC = Importer.ImportContext(D->getDeclContext());
3805 // Import the lexical declaration context.
3806 DeclContext *LexicalDC = DC;
3807 if (D->getDeclContext() != D->getLexicalDeclContext()) {
3808 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
3813 ObjCImplDecl *InImpl = dyn_cast<ObjCImplDecl>(LexicalDC);
3817 // Import the ivar (for an @synthesize).
3818 ObjCIvarDecl *Ivar = nullptr;
3819 if (D->getPropertyIvarDecl()) {
3820 Ivar = cast_or_null<ObjCIvarDecl>(
3821 Importer.Import(D->getPropertyIvarDecl()));
3826 ObjCPropertyImplDecl *ToImpl
3827 = InImpl->FindPropertyImplDecl(Property->getIdentifier());
3829 ToImpl = ObjCPropertyImplDecl::Create(Importer.getToContext(), DC,
3830 Importer.Import(D->getLocStart()),
3831 Importer.Import(D->getLocation()),
3833 D->getPropertyImplementation(),
3835 Importer.Import(D->getPropertyIvarDeclLoc()));
3836 ToImpl->setLexicalDeclContext(LexicalDC);
3837 Importer.Imported(D, ToImpl);
3838 LexicalDC->addDeclInternal(ToImpl);
3840 // Check that we have the same kind of property implementation (@synthesize
3842 if (D->getPropertyImplementation() != ToImpl->getPropertyImplementation()) {
3843 Importer.ToDiag(ToImpl->getLocation(),
3844 diag::err_odr_objc_property_impl_kind_inconsistent)
3845 << Property->getDeclName()
3846 << (ToImpl->getPropertyImplementation()
3847 == ObjCPropertyImplDecl::Dynamic);
3848 Importer.FromDiag(D->getLocation(),
3849 diag::note_odr_objc_property_impl_kind)
3850 << D->getPropertyDecl()->getDeclName()
3851 << (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic);
3855 // For @synthesize, check that we have the same
3856 if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize &&
3857 Ivar != ToImpl->getPropertyIvarDecl()) {
3858 Importer.ToDiag(ToImpl->getPropertyIvarDeclLoc(),
3859 diag::err_odr_objc_synthesize_ivar_inconsistent)
3860 << Property->getDeclName()
3861 << ToImpl->getPropertyIvarDecl()->getDeclName()
3862 << Ivar->getDeclName();
3863 Importer.FromDiag(D->getPropertyIvarDeclLoc(),
3864 diag::note_odr_objc_synthesize_ivar_here)
3865 << D->getPropertyIvarDecl()->getDeclName();
3869 // Merge the existing implementation with the new implementation.
3870 Importer.Imported(D, ToImpl);
3876 Decl *ASTNodeImporter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
3877 // For template arguments, we adopt the translation unit as our declaration
3878 // context. This context will be fixed when the actual template declaration
3881 // FIXME: Import default argument.
3882 return TemplateTypeParmDecl::Create(Importer.getToContext(),
3883 Importer.getToContext().getTranslationUnitDecl(),
3884 Importer.Import(D->getLocStart()),
3885 Importer.Import(D->getLocation()),
3888 Importer.Import(D->getIdentifier()),
3889 D->wasDeclaredWithTypename(),
3890 D->isParameterPack());
3894 ASTNodeImporter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
3895 // Import the name of this declaration.
3896 DeclarationName Name = Importer.Import(D->getDeclName());
3897 if (D->getDeclName() && !Name)
3900 // Import the location of this declaration.
3901 SourceLocation Loc = Importer.Import(D->getLocation());
3903 // Import the type of this declaration.
3904 QualType T = Importer.Import(D->getType());
3908 // Import type-source information.
3909 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3910 if (D->getTypeSourceInfo() && !TInfo)
3913 // FIXME: Import default argument.
3915 return NonTypeTemplateParmDecl::Create(Importer.getToContext(),
3916 Importer.getToContext().getTranslationUnitDecl(),
3917 Importer.Import(D->getInnerLocStart()),
3918 Loc, D->getDepth(), D->getPosition(),
3919 Name.getAsIdentifierInfo(),
3920 T, D->isParameterPack(), TInfo);
3924 ASTNodeImporter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
3925 // Import the name of this declaration.
3926 DeclarationName Name = Importer.Import(D->getDeclName());
3927 if (D->getDeclName() && !Name)
3930 // Import the location of this declaration.
3931 SourceLocation Loc = Importer.Import(D->getLocation());
3933 // Import template parameters.
3934 TemplateParameterList *TemplateParams
3935 = ImportTemplateParameterList(D->getTemplateParameters());
3936 if (!TemplateParams)
3939 // FIXME: Import default argument.
3941 return TemplateTemplateParmDecl::Create(Importer.getToContext(),
3942 Importer.getToContext().getTranslationUnitDecl(),
3943 Loc, D->getDepth(), D->getPosition(),
3944 D->isParameterPack(),
3945 Name.getAsIdentifierInfo(),
3949 Decl *ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
3950 // If this record has a definition in the translation unit we're coming from,
3951 // but this particular declaration is not that definition, import the
3952 // definition and map to that.
3953 CXXRecordDecl *Definition
3954 = cast_or_null<CXXRecordDecl>(D->getTemplatedDecl()->getDefinition());
3955 if (Definition && Definition != D->getTemplatedDecl()) {
3957 = Importer.Import(Definition->getDescribedClassTemplate());
3961 return Importer.Imported(D, ImportedDef);
3964 // Import the major distinguishing characteristics of this class template.
3965 DeclContext *DC, *LexicalDC;
3966 DeclarationName Name;
3968 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
3971 // We may already have a template of the same name; try to find and match it.
3972 if (!DC->isFunctionOrMethod()) {
3973 SmallVector<NamedDecl *, 4> ConflictingDecls;
3974 SmallVector<NamedDecl *, 2> FoundDecls;
3975 DC->localUncachedLookup(Name, FoundDecls);
3976 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3977 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
3980 Decl *Found = FoundDecls[I];
3981 if (ClassTemplateDecl *FoundTemplate
3982 = dyn_cast<ClassTemplateDecl>(Found)) {
3983 if (IsStructuralMatch(D, FoundTemplate)) {
3984 // The class templates structurally match; call it the same template.
3985 // FIXME: We may be filling in a forward declaration here. Handle
3987 Importer.Imported(D->getTemplatedDecl(),
3988 FoundTemplate->getTemplatedDecl());
3989 return Importer.Imported(D, FoundTemplate);
3993 ConflictingDecls.push_back(FoundDecls[I]);
3996 if (!ConflictingDecls.empty()) {
3997 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary,
3998 ConflictingDecls.data(),
3999 ConflictingDecls.size());
4006 CXXRecordDecl *DTemplated = D->getTemplatedDecl();
4008 // Create the declaration that is being templated.
4009 SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart());
4010 SourceLocation IdLoc = Importer.Import(DTemplated->getLocation());
4011 CXXRecordDecl *D2Templated = CXXRecordDecl::Create(Importer.getToContext(),
4012 DTemplated->getTagKind(),
4013 DC, StartLoc, IdLoc,
4014 Name.getAsIdentifierInfo());
4015 D2Templated->setAccess(DTemplated->getAccess());
4016 D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc()));
4017 D2Templated->setLexicalDeclContext(LexicalDC);
4019 // Create the class template declaration itself.
4020 TemplateParameterList *TemplateParams
4021 = ImportTemplateParameterList(D->getTemplateParameters());
4022 if (!TemplateParams)
4025 ClassTemplateDecl *D2 = ClassTemplateDecl::Create(Importer.getToContext(), DC,
4026 Loc, Name, TemplateParams,
4028 /*PrevDecl=*/nullptr);
4029 D2Templated->setDescribedClassTemplate(D2);
4031 D2->setAccess(D->getAccess());
4032 D2->setLexicalDeclContext(LexicalDC);
4033 LexicalDC->addDeclInternal(D2);
4035 // Note the relationship between the class templates.
4036 Importer.Imported(D, D2);
4037 Importer.Imported(DTemplated, D2Templated);
4039 if (DTemplated->isCompleteDefinition() &&
4040 !D2Templated->isCompleteDefinition()) {
4041 // FIXME: Import definition!
4047 Decl *ASTNodeImporter::VisitClassTemplateSpecializationDecl(
4048 ClassTemplateSpecializationDecl *D) {
4049 // If this record has a definition in the translation unit we're coming from,
4050 // but this particular declaration is not that definition, import the
4051 // definition and map to that.
4052 TagDecl *Definition = D->getDefinition();
4053 if (Definition && Definition != D) {
4054 Decl *ImportedDef = Importer.Import(Definition);
4058 return Importer.Imported(D, ImportedDef);
4061 ClassTemplateDecl *ClassTemplate
4062 = cast_or_null<ClassTemplateDecl>(Importer.Import(
4063 D->getSpecializedTemplate()));
4067 // Import the context of this declaration.
4068 DeclContext *DC = ClassTemplate->getDeclContext();
4072 DeclContext *LexicalDC = DC;
4073 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4074 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4079 // Import the location of this declaration.
4080 SourceLocation StartLoc = Importer.Import(D->getLocStart());
4081 SourceLocation IdLoc = Importer.Import(D->getLocation());
4083 // Import template arguments.
4084 SmallVector<TemplateArgument, 2> TemplateArgs;
4085 if (ImportTemplateArguments(D->getTemplateArgs().data(),
4086 D->getTemplateArgs().size(),
4090 // Try to find an existing specialization with these template arguments.
4091 void *InsertPos = nullptr;
4092 ClassTemplateSpecializationDecl *D2
4093 = ClassTemplate->findSpecialization(TemplateArgs.data(),
4094 TemplateArgs.size(), InsertPos);
4096 // We already have a class template specialization with these template
4099 // FIXME: Check for specialization vs. instantiation errors.
4101 if (RecordDecl *FoundDef = D2->getDefinition()) {
4102 if (!D->isCompleteDefinition() || IsStructuralMatch(D, FoundDef)) {
4103 // The record types structurally match, or the "from" translation
4104 // unit only had a forward declaration anyway; call it the same
4106 return Importer.Imported(D, FoundDef);
4110 // Create a new specialization.
4111 D2 = ClassTemplateSpecializationDecl::Create(Importer.getToContext(),
4112 D->getTagKind(), DC,
4115 TemplateArgs.data(),
4116 TemplateArgs.size(),
4117 /*PrevDecl=*/nullptr);
4118 D2->setSpecializationKind(D->getSpecializationKind());
4120 // Add this specialization to the class template.
4121 ClassTemplate->AddSpecialization(D2, InsertPos);
4123 // Import the qualifier, if any.
4124 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
4126 // Add the specialization to this context.
4127 D2->setLexicalDeclContext(LexicalDC);
4128 LexicalDC->addDeclInternal(D2);
4130 Importer.Imported(D, D2);
4132 if (D->isCompleteDefinition() && ImportDefinition(D, D2))
4138 Decl *ASTNodeImporter::VisitVarTemplateDecl(VarTemplateDecl *D) {
4139 // If this variable has a definition in the translation unit we're coming
4141 // but this particular declaration is not that definition, import the
4142 // definition and map to that.
4143 VarDecl *Definition =
4144 cast_or_null<VarDecl>(D->getTemplatedDecl()->getDefinition());
4145 if (Definition && Definition != D->getTemplatedDecl()) {
4146 Decl *ImportedDef = Importer.Import(Definition->getDescribedVarTemplate());
4150 return Importer.Imported(D, ImportedDef);
4153 // Import the major distinguishing characteristics of this variable template.
4154 DeclContext *DC, *LexicalDC;
4155 DeclarationName Name;
4157 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
4160 // We may already have a template of the same name; try to find and match it.
4161 assert(!DC->isFunctionOrMethod() &&
4162 "Variable templates cannot be declared at function scope");
4163 SmallVector<NamedDecl *, 4> ConflictingDecls;
4164 SmallVector<NamedDecl *, 2> FoundDecls;
4165 DC->localUncachedLookup(Name, FoundDecls);
4166 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4167 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
4170 Decl *Found = FoundDecls[I];
4171 if (VarTemplateDecl *FoundTemplate = dyn_cast<VarTemplateDecl>(Found)) {
4172 if (IsStructuralMatch(D, FoundTemplate)) {
4173 // The variable templates structurally match; call it the same template.
4174 Importer.Imported(D->getTemplatedDecl(),
4175 FoundTemplate->getTemplatedDecl());
4176 return Importer.Imported(D, FoundTemplate);
4180 ConflictingDecls.push_back(FoundDecls[I]);
4183 if (!ConflictingDecls.empty()) {
4184 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary,
4185 ConflictingDecls.data(),
4186 ConflictingDecls.size());
4192 VarDecl *DTemplated = D->getTemplatedDecl();
4195 QualType T = Importer.Import(DTemplated->getType());
4199 // Create the declaration that is being templated.
4200 SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart());
4201 SourceLocation IdLoc = Importer.Import(DTemplated->getLocation());
4202 TypeSourceInfo *TInfo = Importer.Import(DTemplated->getTypeSourceInfo());
4203 VarDecl *D2Templated = VarDecl::Create(Importer.getToContext(), DC, StartLoc,
4204 IdLoc, Name.getAsIdentifierInfo(), T,
4205 TInfo, DTemplated->getStorageClass());
4206 D2Templated->setAccess(DTemplated->getAccess());
4207 D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc()));
4208 D2Templated->setLexicalDeclContext(LexicalDC);
4210 // Importer.Imported(DTemplated, D2Templated);
4211 // LexicalDC->addDeclInternal(D2Templated);
4213 // Merge the initializer.
4214 if (ImportDefinition(DTemplated, D2Templated))
4217 // Create the variable template declaration itself.
4218 TemplateParameterList *TemplateParams =
4219 ImportTemplateParameterList(D->getTemplateParameters());
4220 if (!TemplateParams)
4223 VarTemplateDecl *D2 = VarTemplateDecl::Create(
4224 Importer.getToContext(), DC, Loc, Name, TemplateParams, D2Templated);
4225 D2Templated->setDescribedVarTemplate(D2);
4227 D2->setAccess(D->getAccess());
4228 D2->setLexicalDeclContext(LexicalDC);
4229 LexicalDC->addDeclInternal(D2);
4231 // Note the relationship between the variable templates.
4232 Importer.Imported(D, D2);
4233 Importer.Imported(DTemplated, D2Templated);
4235 if (DTemplated->isThisDeclarationADefinition() &&
4236 !D2Templated->isThisDeclarationADefinition()) {
4237 // FIXME: Import definition!
4243 Decl *ASTNodeImporter::VisitVarTemplateSpecializationDecl(
4244 VarTemplateSpecializationDecl *D) {
4245 // If this record has a definition in the translation unit we're coming from,
4246 // but this particular declaration is not that definition, import the
4247 // definition and map to that.
4248 VarDecl *Definition = D->getDefinition();
4249 if (Definition && Definition != D) {
4250 Decl *ImportedDef = Importer.Import(Definition);
4254 return Importer.Imported(D, ImportedDef);
4257 VarTemplateDecl *VarTemplate = cast_or_null<VarTemplateDecl>(
4258 Importer.Import(D->getSpecializedTemplate()));
4262 // Import the context of this declaration.
4263 DeclContext *DC = VarTemplate->getDeclContext();
4267 DeclContext *LexicalDC = DC;
4268 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4269 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4274 // Import the location of this declaration.
4275 SourceLocation StartLoc = Importer.Import(D->getLocStart());
4276 SourceLocation IdLoc = Importer.Import(D->getLocation());
4278 // Import template arguments.
4279 SmallVector<TemplateArgument, 2> TemplateArgs;
4280 if (ImportTemplateArguments(D->getTemplateArgs().data(),
4281 D->getTemplateArgs().size(), TemplateArgs))
4284 // Try to find an existing specialization with these template arguments.
4285 void *InsertPos = nullptr;
4286 VarTemplateSpecializationDecl *D2 = VarTemplate->findSpecialization(
4287 TemplateArgs.data(), TemplateArgs.size(), InsertPos);
4289 // We already have a variable template specialization with these template
4292 // FIXME: Check for specialization vs. instantiation errors.
4294 if (VarDecl *FoundDef = D2->getDefinition()) {
4295 if (!D->isThisDeclarationADefinition() ||
4296 IsStructuralMatch(D, FoundDef)) {
4297 // The record types structurally match, or the "from" translation
4298 // unit only had a forward declaration anyway; call it the same
4300 return Importer.Imported(D, FoundDef);
4306 QualType T = Importer.Import(D->getType());
4309 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
4311 // Create a new specialization.
4312 D2 = VarTemplateSpecializationDecl::Create(
4313 Importer.getToContext(), DC, StartLoc, IdLoc, VarTemplate, T, TInfo,
4314 D->getStorageClass(), TemplateArgs.data(), TemplateArgs.size());
4315 D2->setSpecializationKind(D->getSpecializationKind());
4316 D2->setTemplateArgsInfo(D->getTemplateArgsInfo());
4318 // Add this specialization to the class template.
4319 VarTemplate->AddSpecialization(D2, InsertPos);
4321 // Import the qualifier, if any.
4322 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
4324 // Add the specialization to this context.
4325 D2->setLexicalDeclContext(LexicalDC);
4326 LexicalDC->addDeclInternal(D2);
4328 Importer.Imported(D, D2);
4330 if (D->isThisDeclarationADefinition() && ImportDefinition(D, D2))
4336 //----------------------------------------------------------------------------
4337 // Import Statements
4338 //----------------------------------------------------------------------------
4340 Stmt *ASTNodeImporter::VisitStmt(Stmt *S) {
4341 Importer.FromDiag(S->getLocStart(), diag::err_unsupported_ast_node)
4342 << S->getStmtClassName();
4346 //----------------------------------------------------------------------------
4347 // Import Expressions
4348 //----------------------------------------------------------------------------
4349 Expr *ASTNodeImporter::VisitExpr(Expr *E) {
4350 Importer.FromDiag(E->getLocStart(), diag::err_unsupported_ast_node)
4351 << E->getStmtClassName();
4355 Expr *ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) {
4356 ValueDecl *ToD = cast_or_null<ValueDecl>(Importer.Import(E->getDecl()));
4360 NamedDecl *FoundD = nullptr;
4361 if (E->getDecl() != E->getFoundDecl()) {
4362 FoundD = cast_or_null<NamedDecl>(Importer.Import(E->getFoundDecl()));
4367 QualType T = Importer.Import(E->getType());
4371 DeclRefExpr *DRE = DeclRefExpr::Create(Importer.getToContext(),
4372 Importer.Import(E->getQualifierLoc()),
4373 Importer.Import(E->getTemplateKeywordLoc()),
4375 E->refersToEnclosingLocal(),
4376 Importer.Import(E->getLocation()),
4377 T, E->getValueKind(),
4379 /*FIXME:TemplateArgs=*/nullptr);
4380 if (E->hadMultipleCandidates())
4381 DRE->setHadMultipleCandidates(true);
4385 Expr *ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) {
4386 QualType T = Importer.Import(E->getType());
4390 return IntegerLiteral::Create(Importer.getToContext(),
4392 Importer.Import(E->getLocation()));
4395 Expr *ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) {
4396 QualType T = Importer.Import(E->getType());
4400 return new (Importer.getToContext()) CharacterLiteral(E->getValue(),
4402 Importer.Import(E->getLocation()));
4405 Expr *ASTNodeImporter::VisitParenExpr(ParenExpr *E) {
4406 Expr *SubExpr = Importer.Import(E->getSubExpr());
4410 return new (Importer.getToContext())
4411 ParenExpr(Importer.Import(E->getLParen()),
4412 Importer.Import(E->getRParen()),
4416 Expr *ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) {
4417 QualType T = Importer.Import(E->getType());
4421 Expr *SubExpr = Importer.Import(E->getSubExpr());
4425 return new (Importer.getToContext()) UnaryOperator(SubExpr, E->getOpcode(),
4426 T, E->getValueKind(),
4428 Importer.Import(E->getOperatorLoc()));
4431 Expr *ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr(
4432 UnaryExprOrTypeTraitExpr *E) {
4433 QualType ResultType = Importer.Import(E->getType());
4435 if (E->isArgumentType()) {
4436 TypeSourceInfo *TInfo = Importer.Import(E->getArgumentTypeInfo());
4440 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(),
4442 Importer.Import(E->getOperatorLoc()),
4443 Importer.Import(E->getRParenLoc()));
4446 Expr *SubExpr = Importer.Import(E->getArgumentExpr());
4450 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(),
4451 SubExpr, ResultType,
4452 Importer.Import(E->getOperatorLoc()),
4453 Importer.Import(E->getRParenLoc()));
4456 Expr *ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) {
4457 QualType T = Importer.Import(E->getType());
4461 Expr *LHS = Importer.Import(E->getLHS());
4465 Expr *RHS = Importer.Import(E->getRHS());
4469 return new (Importer.getToContext()) BinaryOperator(LHS, RHS, E->getOpcode(),
4470 T, E->getValueKind(),
4472 Importer.Import(E->getOperatorLoc()),
4473 E->isFPContractable());
4476 Expr *ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
4477 QualType T = Importer.Import(E->getType());
4481 QualType CompLHSType = Importer.Import(E->getComputationLHSType());
4482 if (CompLHSType.isNull())
4485 QualType CompResultType = Importer.Import(E->getComputationResultType());
4486 if (CompResultType.isNull())
4489 Expr *LHS = Importer.Import(E->getLHS());
4493 Expr *RHS = Importer.Import(E->getRHS());
4497 return new (Importer.getToContext())
4498 CompoundAssignOperator(LHS, RHS, E->getOpcode(),
4499 T, E->getValueKind(),
4501 CompLHSType, CompResultType,
4502 Importer.Import(E->getOperatorLoc()),
4503 E->isFPContractable());
4506 static bool ImportCastPath(CastExpr *E, CXXCastPath &Path) {
4507 if (E->path_empty()) return false;
4509 // TODO: import cast paths
4513 Expr *ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
4514 QualType T = Importer.Import(E->getType());
4518 Expr *SubExpr = Importer.Import(E->getSubExpr());
4522 CXXCastPath BasePath;
4523 if (ImportCastPath(E, BasePath))
4526 return ImplicitCastExpr::Create(Importer.getToContext(), T, E->getCastKind(),
4527 SubExpr, &BasePath, E->getValueKind());
4530 Expr *ASTNodeImporter::VisitCStyleCastExpr(CStyleCastExpr *E) {
4531 QualType T = Importer.Import(E->getType());
4535 Expr *SubExpr = Importer.Import(E->getSubExpr());
4539 TypeSourceInfo *TInfo = Importer.Import(E->getTypeInfoAsWritten());
4540 if (!TInfo && E->getTypeInfoAsWritten())
4543 CXXCastPath BasePath;
4544 if (ImportCastPath(E, BasePath))
4547 return CStyleCastExpr::Create(Importer.getToContext(), T,
4548 E->getValueKind(), E->getCastKind(),
4549 SubExpr, &BasePath, TInfo,
4550 Importer.Import(E->getLParenLoc()),
4551 Importer.Import(E->getRParenLoc()));
4554 ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager,
4555 ASTContext &FromContext, FileManager &FromFileManager,
4557 : ToContext(ToContext), FromContext(FromContext),
4558 ToFileManager(ToFileManager), FromFileManager(FromFileManager),
4559 Minimal(MinimalImport), LastDiagFromFrom(false)
4561 ImportedDecls[FromContext.getTranslationUnitDecl()]
4562 = ToContext.getTranslationUnitDecl();
4565 ASTImporter::~ASTImporter() { }
4567 QualType ASTImporter::Import(QualType FromT) {
4571 const Type *fromTy = FromT.getTypePtr();
4573 // Check whether we've already imported this type.
4574 llvm::DenseMap<const Type *, const Type *>::iterator Pos
4575 = ImportedTypes.find(fromTy);
4576 if (Pos != ImportedTypes.end())
4577 return ToContext.getQualifiedType(Pos->second, FromT.getLocalQualifiers());
4580 ASTNodeImporter Importer(*this);
4581 QualType ToT = Importer.Visit(fromTy);
4585 // Record the imported type.
4586 ImportedTypes[fromTy] = ToT.getTypePtr();
4588 return ToContext.getQualifiedType(ToT, FromT.getLocalQualifiers());
4591 TypeSourceInfo *ASTImporter::Import(TypeSourceInfo *FromTSI) {
4595 // FIXME: For now we just create a "trivial" type source info based
4596 // on the type and a single location. Implement a real version of this.
4597 QualType T = Import(FromTSI->getType());
4601 return ToContext.getTrivialTypeSourceInfo(T,
4602 FromTSI->getTypeLoc().getLocStart());
4605 Decl *ASTImporter::Import(Decl *FromD) {
4609 ASTNodeImporter Importer(*this);
4611 // Check whether we've already imported this declaration.
4612 llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD);
4613 if (Pos != ImportedDecls.end()) {
4614 Decl *ToD = Pos->second;
4615 Importer.ImportDefinitionIfNeeded(FromD, ToD);
4620 Decl *ToD = Importer.Visit(FromD);
4624 // Record the imported declaration.
4625 ImportedDecls[FromD] = ToD;
4627 if (TagDecl *FromTag = dyn_cast<TagDecl>(FromD)) {
4628 // Keep track of anonymous tags that have an associated typedef.
4629 if (FromTag->getTypedefNameForAnonDecl())
4630 AnonTagsWithPendingTypedefs.push_back(FromTag);
4631 } else if (TypedefNameDecl *FromTypedef = dyn_cast<TypedefNameDecl>(FromD)) {
4632 // When we've finished transforming a typedef, see whether it was the
4633 // typedef for an anonymous tag.
4634 for (SmallVectorImpl<TagDecl *>::iterator
4635 FromTag = AnonTagsWithPendingTypedefs.begin(),
4636 FromTagEnd = AnonTagsWithPendingTypedefs.end();
4637 FromTag != FromTagEnd; ++FromTag) {
4638 if ((*FromTag)->getTypedefNameForAnonDecl() == FromTypedef) {
4639 if (TagDecl *ToTag = cast_or_null<TagDecl>(Import(*FromTag))) {
4640 // We found the typedef for an anonymous tag; link them.
4641 ToTag->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(ToD));
4642 AnonTagsWithPendingTypedefs.erase(FromTag);
4652 DeclContext *ASTImporter::ImportContext(DeclContext *FromDC) {
4656 DeclContext *ToDC = cast_or_null<DeclContext>(Import(cast<Decl>(FromDC)));
4660 // When we're using a record/enum/Objective-C class/protocol as a context, we
4661 // need it to have a definition.
4662 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(ToDC)) {
4663 RecordDecl *FromRecord = cast<RecordDecl>(FromDC);
4664 if (ToRecord->isCompleteDefinition()) {
4666 } else if (FromRecord->isCompleteDefinition()) {
4667 ASTNodeImporter(*this).ImportDefinition(FromRecord, ToRecord,
4668 ASTNodeImporter::IDK_Basic);
4670 CompleteDecl(ToRecord);
4672 } else if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(ToDC)) {
4673 EnumDecl *FromEnum = cast<EnumDecl>(FromDC);
4674 if (ToEnum->isCompleteDefinition()) {
4676 } else if (FromEnum->isCompleteDefinition()) {
4677 ASTNodeImporter(*this).ImportDefinition(FromEnum, ToEnum,
4678 ASTNodeImporter::IDK_Basic);
4680 CompleteDecl(ToEnum);
4682 } else if (ObjCInterfaceDecl *ToClass = dyn_cast<ObjCInterfaceDecl>(ToDC)) {
4683 ObjCInterfaceDecl *FromClass = cast<ObjCInterfaceDecl>(FromDC);
4684 if (ToClass->getDefinition()) {
4686 } else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) {
4687 ASTNodeImporter(*this).ImportDefinition(FromDef, ToClass,
4688 ASTNodeImporter::IDK_Basic);
4690 CompleteDecl(ToClass);
4692 } else if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(ToDC)) {
4693 ObjCProtocolDecl *FromProto = cast<ObjCProtocolDecl>(FromDC);
4694 if (ToProto->getDefinition()) {
4696 } else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) {
4697 ASTNodeImporter(*this).ImportDefinition(FromDef, ToProto,
4698 ASTNodeImporter::IDK_Basic);
4700 CompleteDecl(ToProto);
4707 Expr *ASTImporter::Import(Expr *FromE) {
4711 return cast_or_null<Expr>(Import(cast<Stmt>(FromE)));
4714 Stmt *ASTImporter::Import(Stmt *FromS) {
4718 // Check whether we've already imported this declaration.
4719 llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(FromS);
4720 if (Pos != ImportedStmts.end())
4724 ASTNodeImporter Importer(*this);
4725 Stmt *ToS = Importer.Visit(FromS);
4729 // Record the imported declaration.
4730 ImportedStmts[FromS] = ToS;
4734 NestedNameSpecifier *ASTImporter::Import(NestedNameSpecifier *FromNNS) {
4738 NestedNameSpecifier *prefix = Import(FromNNS->getPrefix());
4740 switch (FromNNS->getKind()) {
4741 case NestedNameSpecifier::Identifier:
4742 if (IdentifierInfo *II = Import(FromNNS->getAsIdentifier())) {
4743 return NestedNameSpecifier::Create(ToContext, prefix, II);
4747 case NestedNameSpecifier::Namespace:
4748 if (NamespaceDecl *NS =
4749 cast<NamespaceDecl>(Import(FromNNS->getAsNamespace()))) {
4750 return NestedNameSpecifier::Create(ToContext, prefix, NS);
4754 case NestedNameSpecifier::NamespaceAlias:
4755 if (NamespaceAliasDecl *NSAD =
4756 cast<NamespaceAliasDecl>(Import(FromNNS->getAsNamespaceAlias()))) {
4757 return NestedNameSpecifier::Create(ToContext, prefix, NSAD);
4761 case NestedNameSpecifier::Global:
4762 return NestedNameSpecifier::GlobalSpecifier(ToContext);
4764 case NestedNameSpecifier::TypeSpec:
4765 case NestedNameSpecifier::TypeSpecWithTemplate: {
4766 QualType T = Import(QualType(FromNNS->getAsType(), 0u));
4768 bool bTemplate = FromNNS->getKind() ==
4769 NestedNameSpecifier::TypeSpecWithTemplate;
4770 return NestedNameSpecifier::Create(ToContext, prefix,
4771 bTemplate, T.getTypePtr());
4777 llvm_unreachable("Invalid nested name specifier kind");
4780 NestedNameSpecifierLoc ASTImporter::Import(NestedNameSpecifierLoc FromNNS) {
4781 // FIXME: Implement!
4782 return NestedNameSpecifierLoc();
4785 TemplateName ASTImporter::Import(TemplateName From) {
4786 switch (From.getKind()) {
4787 case TemplateName::Template:
4788 if (TemplateDecl *ToTemplate
4789 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl())))
4790 return TemplateName(ToTemplate);
4792 return TemplateName();
4794 case TemplateName::OverloadedTemplate: {
4795 OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate();
4796 UnresolvedSet<2> ToTemplates;
4797 for (OverloadedTemplateStorage::iterator I = FromStorage->begin(),
4798 E = FromStorage->end();
4800 if (NamedDecl *To = cast_or_null<NamedDecl>(Import(*I)))
4801 ToTemplates.addDecl(To);
4803 return TemplateName();
4805 return ToContext.getOverloadedTemplateName(ToTemplates.begin(),
4809 case TemplateName::QualifiedTemplate: {
4810 QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName();
4811 NestedNameSpecifier *Qualifier = Import(QTN->getQualifier());
4813 return TemplateName();
4815 if (TemplateDecl *ToTemplate
4816 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl())))
4817 return ToContext.getQualifiedTemplateName(Qualifier,
4818 QTN->hasTemplateKeyword(),
4821 return TemplateName();
4824 case TemplateName::DependentTemplate: {
4825 DependentTemplateName *DTN = From.getAsDependentTemplateName();
4826 NestedNameSpecifier *Qualifier = Import(DTN->getQualifier());
4828 return TemplateName();
4830 if (DTN->isIdentifier()) {
4831 return ToContext.getDependentTemplateName(Qualifier,
4832 Import(DTN->getIdentifier()));
4835 return ToContext.getDependentTemplateName(Qualifier, DTN->getOperator());
4838 case TemplateName::SubstTemplateTemplateParm: {
4839 SubstTemplateTemplateParmStorage *subst
4840 = From.getAsSubstTemplateTemplateParm();
4841 TemplateTemplateParmDecl *param
4842 = cast_or_null<TemplateTemplateParmDecl>(Import(subst->getParameter()));
4844 return TemplateName();
4846 TemplateName replacement = Import(subst->getReplacement());
4847 if (replacement.isNull()) return TemplateName();
4849 return ToContext.getSubstTemplateTemplateParm(param, replacement);
4852 case TemplateName::SubstTemplateTemplateParmPack: {
4853 SubstTemplateTemplateParmPackStorage *SubstPack
4854 = From.getAsSubstTemplateTemplateParmPack();
4855 TemplateTemplateParmDecl *Param
4856 = cast_or_null<TemplateTemplateParmDecl>(
4857 Import(SubstPack->getParameterPack()));
4859 return TemplateName();
4861 ASTNodeImporter Importer(*this);
4862 TemplateArgument ArgPack
4863 = Importer.ImportTemplateArgument(SubstPack->getArgumentPack());
4864 if (ArgPack.isNull())
4865 return TemplateName();
4867 return ToContext.getSubstTemplateTemplateParmPack(Param, ArgPack);
4871 llvm_unreachable("Invalid template name kind");
4874 SourceLocation ASTImporter::Import(SourceLocation FromLoc) {
4875 if (FromLoc.isInvalid())
4876 return SourceLocation();
4878 SourceManager &FromSM = FromContext.getSourceManager();
4880 // For now, map everything down to its spelling location, so that we
4881 // don't have to import macro expansions.
4882 // FIXME: Import macro expansions!
4883 FromLoc = FromSM.getSpellingLoc(FromLoc);
4884 std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc);
4885 SourceManager &ToSM = ToContext.getSourceManager();
4886 return ToSM.getLocForStartOfFile(Import(Decomposed.first))
4887 .getLocWithOffset(Decomposed.second);
4890 SourceRange ASTImporter::Import(SourceRange FromRange) {
4891 return SourceRange(Import(FromRange.getBegin()), Import(FromRange.getEnd()));
4894 FileID ASTImporter::Import(FileID FromID) {
4895 llvm::DenseMap<FileID, FileID>::iterator Pos
4896 = ImportedFileIDs.find(FromID);
4897 if (Pos != ImportedFileIDs.end())
4900 SourceManager &FromSM = FromContext.getSourceManager();
4901 SourceManager &ToSM = ToContext.getSourceManager();
4902 const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FromID);
4903 assert(FromSLoc.isFile() && "Cannot handle macro expansions yet");
4905 // Include location of this file.
4906 SourceLocation ToIncludeLoc = Import(FromSLoc.getFile().getIncludeLoc());
4908 // Map the FileID for to the "to" source manager.
4910 const SrcMgr::ContentCache *Cache = FromSLoc.getFile().getContentCache();
4911 if (Cache->OrigEntry) {
4912 // FIXME: We probably want to use getVirtualFile(), so we don't hit the
4914 // FIXME: We definitely want to re-use the existing MemoryBuffer, rather
4915 // than mmap the files several times.
4916 const FileEntry *Entry = ToFileManager.getFile(Cache->OrigEntry->getName());
4917 ToID = ToSM.createFileID(Entry, ToIncludeLoc,
4918 FromSLoc.getFile().getFileCharacteristic());
4920 // FIXME: We want to re-use the existing MemoryBuffer!
4921 const llvm::MemoryBuffer *
4922 FromBuf = Cache->getBuffer(FromContext.getDiagnostics(), FromSM);
4923 llvm::MemoryBuffer *ToBuf
4924 = llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBuffer(),
4925 FromBuf->getBufferIdentifier());
4926 ToID = ToSM.createFileID(ToBuf, FromSLoc.getFile().getFileCharacteristic());
4930 ImportedFileIDs[FromID] = ToID;
4934 void ASTImporter::ImportDefinition(Decl *From) {
4935 Decl *To = Import(From);
4939 if (DeclContext *FromDC = cast<DeclContext>(From)) {
4940 ASTNodeImporter Importer(*this);
4942 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(To)) {
4943 if (!ToRecord->getDefinition()) {
4944 Importer.ImportDefinition(cast<RecordDecl>(FromDC), ToRecord,
4945 ASTNodeImporter::IDK_Everything);
4950 if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(To)) {
4951 if (!ToEnum->getDefinition()) {
4952 Importer.ImportDefinition(cast<EnumDecl>(FromDC), ToEnum,
4953 ASTNodeImporter::IDK_Everything);
4958 if (ObjCInterfaceDecl *ToIFace = dyn_cast<ObjCInterfaceDecl>(To)) {
4959 if (!ToIFace->getDefinition()) {
4960 Importer.ImportDefinition(cast<ObjCInterfaceDecl>(FromDC), ToIFace,
4961 ASTNodeImporter::IDK_Everything);
4966 if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(To)) {
4967 if (!ToProto->getDefinition()) {
4968 Importer.ImportDefinition(cast<ObjCProtocolDecl>(FromDC), ToProto,
4969 ASTNodeImporter::IDK_Everything);
4974 Importer.ImportDeclContext(FromDC, true);
4978 DeclarationName ASTImporter::Import(DeclarationName FromName) {
4980 return DeclarationName();
4982 switch (FromName.getNameKind()) {
4983 case DeclarationName::Identifier:
4984 return Import(FromName.getAsIdentifierInfo());
4986 case DeclarationName::ObjCZeroArgSelector:
4987 case DeclarationName::ObjCOneArgSelector:
4988 case DeclarationName::ObjCMultiArgSelector:
4989 return Import(FromName.getObjCSelector());
4991 case DeclarationName::CXXConstructorName: {
4992 QualType T = Import(FromName.getCXXNameType());
4994 return DeclarationName();
4996 return ToContext.DeclarationNames.getCXXConstructorName(
4997 ToContext.getCanonicalType(T));
5000 case DeclarationName::CXXDestructorName: {
5001 QualType T = Import(FromName.getCXXNameType());
5003 return DeclarationName();
5005 return ToContext.DeclarationNames.getCXXDestructorName(
5006 ToContext.getCanonicalType(T));
5009 case DeclarationName::CXXConversionFunctionName: {
5010 QualType T = Import(FromName.getCXXNameType());
5012 return DeclarationName();
5014 return ToContext.DeclarationNames.getCXXConversionFunctionName(
5015 ToContext.getCanonicalType(T));
5018 case DeclarationName::CXXOperatorName:
5019 return ToContext.DeclarationNames.getCXXOperatorName(
5020 FromName.getCXXOverloadedOperator());
5022 case DeclarationName::CXXLiteralOperatorName:
5023 return ToContext.DeclarationNames.getCXXLiteralOperatorName(
5024 Import(FromName.getCXXLiteralIdentifier()));
5026 case DeclarationName::CXXUsingDirective:
5028 return DeclarationName::getUsingDirectiveName();
5031 llvm_unreachable("Invalid DeclarationName Kind!");
5034 IdentifierInfo *ASTImporter::Import(const IdentifierInfo *FromId) {
5038 return &ToContext.Idents.get(FromId->getName());
5041 Selector ASTImporter::Import(Selector FromSel) {
5042 if (FromSel.isNull())
5045 SmallVector<IdentifierInfo *, 4> Idents;
5046 Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(0)));
5047 for (unsigned I = 1, N = FromSel.getNumArgs(); I < N; ++I)
5048 Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(I)));
5049 return ToContext.Selectors.getSelector(FromSel.getNumArgs(), Idents.data());
5052 DeclarationName ASTImporter::HandleNameConflict(DeclarationName Name,
5056 unsigned NumDecls) {
5060 DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) {
5061 if (LastDiagFromFrom)
5062 ToContext.getDiagnostics().notePriorDiagnosticFrom(
5063 FromContext.getDiagnostics());
5064 LastDiagFromFrom = false;
5065 return ToContext.getDiagnostics().Report(Loc, DiagID);
5068 DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) {
5069 if (!LastDiagFromFrom)
5070 FromContext.getDiagnostics().notePriorDiagnosticFrom(
5071 ToContext.getDiagnostics());
5072 LastDiagFromFrom = true;
5073 return FromContext.getDiagnostics().Report(Loc, DiagID);
5076 void ASTImporter::CompleteDecl (Decl *D) {
5077 if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
5078 if (!ID->getDefinition())
5079 ID->startDefinition();
5081 else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
5082 if (!PD->getDefinition())
5083 PD->startDefinition();
5085 else if (TagDecl *TD = dyn_cast<TagDecl>(D)) {
5086 if (!TD->getDefinition() && !TD->isBeingDefined()) {
5087 TD->startDefinition();
5088 TD->setCompleteDefinition(true);
5092 assert (0 && "CompleteDecl called on a Decl that can't be completed");
5096 Decl *ASTImporter::Imported(Decl *From, Decl *To) {
5097 ImportedDecls[From] = To;
5101 bool ASTImporter::IsStructurallyEquivalent(QualType From, QualType To,
5103 llvm::DenseMap<const Type *, const Type *>::iterator Pos
5104 = ImportedTypes.find(From.getTypePtr());
5105 if (Pos != ImportedTypes.end() && ToContext.hasSameType(Import(From), To))
5108 StructuralEquivalenceContext Ctx(FromContext, ToContext, NonEquivalentDecls,
5110 return Ctx.IsStructurallyEquivalent(From, To);