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.ExceptionSpec.Type = FromEPI.ExceptionSpec.Type;
1626 ToEPI.ExceptionSpec.Exceptions = ExceptionTypes;
1627 ToEPI.ExceptionSpec.NoexceptExpr =
1628 Importer.Import(FromEPI.ExceptionSpec.NoexceptExpr);
1629 ToEPI.ExceptionSpec.SourceDecl = cast_or_null<FunctionDecl>(
1630 Importer.Import(FromEPI.ExceptionSpec.SourceDecl));
1631 ToEPI.ExceptionSpec.SourceTemplate = cast_or_null<FunctionDecl>(
1632 Importer.Import(FromEPI.ExceptionSpec.SourceTemplate));
1634 return Importer.getToContext().getFunctionType(ToResultType, ArgTypes, ToEPI);
1637 QualType ASTNodeImporter::VisitParenType(const ParenType *T) {
1638 QualType ToInnerType = Importer.Import(T->getInnerType());
1639 if (ToInnerType.isNull())
1642 return Importer.getToContext().getParenType(ToInnerType);
1645 QualType ASTNodeImporter::VisitTypedefType(const TypedefType *T) {
1646 TypedefNameDecl *ToDecl
1647 = dyn_cast_or_null<TypedefNameDecl>(Importer.Import(T->getDecl()));
1651 return Importer.getToContext().getTypeDeclType(ToDecl);
1654 QualType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) {
1655 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr());
1659 return Importer.getToContext().getTypeOfExprType(ToExpr);
1662 QualType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) {
1663 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType());
1664 if (ToUnderlyingType.isNull())
1667 return Importer.getToContext().getTypeOfType(ToUnderlyingType);
1670 QualType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) {
1671 // FIXME: Make sure that the "to" context supports C++0x!
1672 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr());
1676 QualType UnderlyingType = Importer.Import(T->getUnderlyingType());
1677 if (UnderlyingType.isNull())
1680 return Importer.getToContext().getDecltypeType(ToExpr, UnderlyingType);
1683 QualType ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) {
1684 QualType ToBaseType = Importer.Import(T->getBaseType());
1685 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType());
1686 if (ToBaseType.isNull() || ToUnderlyingType.isNull())
1689 return Importer.getToContext().getUnaryTransformType(ToBaseType,
1694 QualType ASTNodeImporter::VisitAutoType(const AutoType *T) {
1695 // FIXME: Make sure that the "to" context supports C++11!
1696 QualType FromDeduced = T->getDeducedType();
1698 if (!FromDeduced.isNull()) {
1699 ToDeduced = Importer.Import(FromDeduced);
1700 if (ToDeduced.isNull())
1704 return Importer.getToContext().getAutoType(ToDeduced, T->isDecltypeAuto(),
1705 /*IsDependent*/false);
1708 QualType ASTNodeImporter::VisitRecordType(const RecordType *T) {
1710 = dyn_cast_or_null<RecordDecl>(Importer.Import(T->getDecl()));
1714 return Importer.getToContext().getTagDeclType(ToDecl);
1717 QualType ASTNodeImporter::VisitEnumType(const EnumType *T) {
1719 = dyn_cast_or_null<EnumDecl>(Importer.Import(T->getDecl()));
1723 return Importer.getToContext().getTagDeclType(ToDecl);
1726 QualType ASTNodeImporter::VisitTemplateSpecializationType(
1727 const TemplateSpecializationType *T) {
1728 TemplateName ToTemplate = Importer.Import(T->getTemplateName());
1729 if (ToTemplate.isNull())
1732 SmallVector<TemplateArgument, 2> ToTemplateArgs;
1733 if (ImportTemplateArguments(T->getArgs(), T->getNumArgs(), ToTemplateArgs))
1736 QualType ToCanonType;
1737 if (!QualType(T, 0).isCanonical()) {
1738 QualType FromCanonType
1739 = Importer.getFromContext().getCanonicalType(QualType(T, 0));
1740 ToCanonType =Importer.Import(FromCanonType);
1741 if (ToCanonType.isNull())
1744 return Importer.getToContext().getTemplateSpecializationType(ToTemplate,
1745 ToTemplateArgs.data(),
1746 ToTemplateArgs.size(),
1750 QualType ASTNodeImporter::VisitElaboratedType(const ElaboratedType *T) {
1751 NestedNameSpecifier *ToQualifier = nullptr;
1752 // Note: the qualifier in an ElaboratedType is optional.
1753 if (T->getQualifier()) {
1754 ToQualifier = Importer.Import(T->getQualifier());
1759 QualType ToNamedType = Importer.Import(T->getNamedType());
1760 if (ToNamedType.isNull())
1763 return Importer.getToContext().getElaboratedType(T->getKeyword(),
1764 ToQualifier, ToNamedType);
1767 QualType ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
1768 ObjCInterfaceDecl *Class
1769 = dyn_cast_or_null<ObjCInterfaceDecl>(Importer.Import(T->getDecl()));
1773 return Importer.getToContext().getObjCInterfaceType(Class);
1776 QualType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) {
1777 QualType ToBaseType = Importer.Import(T->getBaseType());
1778 if (ToBaseType.isNull())
1781 SmallVector<ObjCProtocolDecl *, 4> Protocols;
1782 for (auto *P : T->quals()) {
1783 ObjCProtocolDecl *Protocol
1784 = dyn_cast_or_null<ObjCProtocolDecl>(Importer.Import(P));
1787 Protocols.push_back(Protocol);
1790 return Importer.getToContext().getObjCObjectType(ToBaseType,
1796 ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
1797 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1798 if (ToPointeeType.isNull())
1801 return Importer.getToContext().getObjCObjectPointerType(ToPointeeType);
1804 //----------------------------------------------------------------------------
1805 // Import Declarations
1806 //----------------------------------------------------------------------------
1807 bool ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclContext *&DC,
1808 DeclContext *&LexicalDC,
1809 DeclarationName &Name,
1810 SourceLocation &Loc) {
1811 // Import the context of this declaration.
1812 DC = Importer.ImportContext(D->getDeclContext());
1817 if (D->getDeclContext() != D->getLexicalDeclContext()) {
1818 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
1823 // Import the name of this declaration.
1824 Name = Importer.Import(D->getDeclName());
1825 if (D->getDeclName() && !Name)
1828 // Import the location of this declaration.
1829 Loc = Importer.Import(D->getLocation());
1833 void ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) {
1838 ToD = Importer.Import(FromD);
1843 if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(FromD)) {
1844 if (RecordDecl *ToRecord = cast_or_null<RecordDecl>(ToD)) {
1845 if (FromRecord->getDefinition() && FromRecord->isCompleteDefinition() && !ToRecord->getDefinition()) {
1846 ImportDefinition(FromRecord, ToRecord);
1852 if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(FromD)) {
1853 if (EnumDecl *ToEnum = cast_or_null<EnumDecl>(ToD)) {
1854 if (FromEnum->getDefinition() && !ToEnum->getDefinition()) {
1855 ImportDefinition(FromEnum, ToEnum);
1863 ASTNodeImporter::ImportDeclarationNameLoc(const DeclarationNameInfo &From,
1864 DeclarationNameInfo& To) {
1865 // NOTE: To.Name and To.Loc are already imported.
1866 // We only have to import To.LocInfo.
1867 switch (To.getName().getNameKind()) {
1868 case DeclarationName::Identifier:
1869 case DeclarationName::ObjCZeroArgSelector:
1870 case DeclarationName::ObjCOneArgSelector:
1871 case DeclarationName::ObjCMultiArgSelector:
1872 case DeclarationName::CXXUsingDirective:
1875 case DeclarationName::CXXOperatorName: {
1876 SourceRange Range = From.getCXXOperatorNameRange();
1877 To.setCXXOperatorNameRange(Importer.Import(Range));
1880 case DeclarationName::CXXLiteralOperatorName: {
1881 SourceLocation Loc = From.getCXXLiteralOperatorNameLoc();
1882 To.setCXXLiteralOperatorNameLoc(Importer.Import(Loc));
1885 case DeclarationName::CXXConstructorName:
1886 case DeclarationName::CXXDestructorName:
1887 case DeclarationName::CXXConversionFunctionName: {
1888 TypeSourceInfo *FromTInfo = From.getNamedTypeInfo();
1889 To.setNamedTypeInfo(Importer.Import(FromTInfo));
1893 llvm_unreachable("Unknown name kind.");
1896 void ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) {
1897 if (Importer.isMinimalImport() && !ForceImport) {
1898 Importer.ImportContext(FromDC);
1902 for (auto *From : FromDC->decls())
1903 Importer.Import(From);
1906 bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To,
1907 ImportDefinitionKind Kind) {
1908 if (To->getDefinition() || To->isBeingDefined()) {
1909 if (Kind == IDK_Everything)
1910 ImportDeclContext(From, /*ForceImport=*/true);
1915 To->startDefinition();
1917 // Add base classes.
1918 if (CXXRecordDecl *ToCXX = dyn_cast<CXXRecordDecl>(To)) {
1919 CXXRecordDecl *FromCXX = cast<CXXRecordDecl>(From);
1921 struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data();
1922 struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data();
1923 ToData.UserDeclaredConstructor = FromData.UserDeclaredConstructor;
1924 ToData.UserDeclaredSpecialMembers = FromData.UserDeclaredSpecialMembers;
1925 ToData.Aggregate = FromData.Aggregate;
1926 ToData.PlainOldData = FromData.PlainOldData;
1927 ToData.Empty = FromData.Empty;
1928 ToData.Polymorphic = FromData.Polymorphic;
1929 ToData.Abstract = FromData.Abstract;
1930 ToData.IsStandardLayout = FromData.IsStandardLayout;
1931 ToData.HasNoNonEmptyBases = FromData.HasNoNonEmptyBases;
1932 ToData.HasPrivateFields = FromData.HasPrivateFields;
1933 ToData.HasProtectedFields = FromData.HasProtectedFields;
1934 ToData.HasPublicFields = FromData.HasPublicFields;
1935 ToData.HasMutableFields = FromData.HasMutableFields;
1936 ToData.HasVariantMembers = FromData.HasVariantMembers;
1937 ToData.HasOnlyCMembers = FromData.HasOnlyCMembers;
1938 ToData.HasInClassInitializer = FromData.HasInClassInitializer;
1939 ToData.HasUninitializedReferenceMember
1940 = FromData.HasUninitializedReferenceMember;
1941 ToData.NeedOverloadResolutionForMoveConstructor
1942 = FromData.NeedOverloadResolutionForMoveConstructor;
1943 ToData.NeedOverloadResolutionForMoveAssignment
1944 = FromData.NeedOverloadResolutionForMoveAssignment;
1945 ToData.NeedOverloadResolutionForDestructor
1946 = FromData.NeedOverloadResolutionForDestructor;
1947 ToData.DefaultedMoveConstructorIsDeleted
1948 = FromData.DefaultedMoveConstructorIsDeleted;
1949 ToData.DefaultedMoveAssignmentIsDeleted
1950 = FromData.DefaultedMoveAssignmentIsDeleted;
1951 ToData.DefaultedDestructorIsDeleted = FromData.DefaultedDestructorIsDeleted;
1952 ToData.HasTrivialSpecialMembers = FromData.HasTrivialSpecialMembers;
1953 ToData.HasIrrelevantDestructor = FromData.HasIrrelevantDestructor;
1954 ToData.HasConstexprNonCopyMoveConstructor
1955 = FromData.HasConstexprNonCopyMoveConstructor;
1956 ToData.DefaultedDefaultConstructorIsConstexpr
1957 = FromData.DefaultedDefaultConstructorIsConstexpr;
1958 ToData.HasConstexprDefaultConstructor
1959 = FromData.HasConstexprDefaultConstructor;
1960 ToData.HasNonLiteralTypeFieldsOrBases
1961 = FromData.HasNonLiteralTypeFieldsOrBases;
1962 // ComputedVisibleConversions not imported.
1963 ToData.UserProvidedDefaultConstructor
1964 = FromData.UserProvidedDefaultConstructor;
1965 ToData.DeclaredSpecialMembers = FromData.DeclaredSpecialMembers;
1966 ToData.ImplicitCopyConstructorHasConstParam
1967 = FromData.ImplicitCopyConstructorHasConstParam;
1968 ToData.ImplicitCopyAssignmentHasConstParam
1969 = FromData.ImplicitCopyAssignmentHasConstParam;
1970 ToData.HasDeclaredCopyConstructorWithConstParam
1971 = FromData.HasDeclaredCopyConstructorWithConstParam;
1972 ToData.HasDeclaredCopyAssignmentWithConstParam
1973 = FromData.HasDeclaredCopyAssignmentWithConstParam;
1974 ToData.IsLambda = FromData.IsLambda;
1976 SmallVector<CXXBaseSpecifier *, 4> Bases;
1977 for (const auto &Base1 : FromCXX->bases()) {
1978 QualType T = Importer.Import(Base1.getType());
1982 SourceLocation EllipsisLoc;
1983 if (Base1.isPackExpansion())
1984 EllipsisLoc = Importer.Import(Base1.getEllipsisLoc());
1986 // Ensure that we have a definition for the base.
1987 ImportDefinitionIfNeeded(Base1.getType()->getAsCXXRecordDecl());
1990 new (Importer.getToContext())
1991 CXXBaseSpecifier(Importer.Import(Base1.getSourceRange()),
1993 Base1.isBaseOfClass(),
1994 Base1.getAccessSpecifierAsWritten(),
1995 Importer.Import(Base1.getTypeSourceInfo()),
1999 ToCXX->setBases(Bases.data(), Bases.size());
2002 if (shouldForceImportDeclContext(Kind))
2003 ImportDeclContext(From, /*ForceImport=*/true);
2005 To->completeDefinition();
2009 bool ASTNodeImporter::ImportDefinition(VarDecl *From, VarDecl *To,
2010 ImportDefinitionKind Kind) {
2011 if (To->getDefinition())
2014 // FIXME: Can we really import any initializer? Alternatively, we could force
2015 // ourselves to import every declaration of a variable and then only use
2017 To->setInit(Importer.Import(const_cast<Expr *>(From->getAnyInitializer())));
2019 // FIXME: Other bits to merge?
2024 bool ASTNodeImporter::ImportDefinition(EnumDecl *From, EnumDecl *To,
2025 ImportDefinitionKind Kind) {
2026 if (To->getDefinition() || To->isBeingDefined()) {
2027 if (Kind == IDK_Everything)
2028 ImportDeclContext(From, /*ForceImport=*/true);
2032 To->startDefinition();
2034 QualType T = Importer.Import(Importer.getFromContext().getTypeDeclType(From));
2038 QualType ToPromotionType = Importer.Import(From->getPromotionType());
2039 if (ToPromotionType.isNull())
2042 if (shouldForceImportDeclContext(Kind))
2043 ImportDeclContext(From, /*ForceImport=*/true);
2045 // FIXME: we might need to merge the number of positive or negative bits
2046 // if the enumerator lists don't match.
2047 To->completeDefinition(T, ToPromotionType,
2048 From->getNumPositiveBits(),
2049 From->getNumNegativeBits());
2053 TemplateParameterList *ASTNodeImporter::ImportTemplateParameterList(
2054 TemplateParameterList *Params) {
2055 SmallVector<NamedDecl *, 4> ToParams;
2056 ToParams.reserve(Params->size());
2057 for (TemplateParameterList::iterator P = Params->begin(),
2058 PEnd = Params->end();
2060 Decl *To = Importer.Import(*P);
2064 ToParams.push_back(cast<NamedDecl>(To));
2067 return TemplateParameterList::Create(Importer.getToContext(),
2068 Importer.Import(Params->getTemplateLoc()),
2069 Importer.Import(Params->getLAngleLoc()),
2070 ToParams.data(), ToParams.size(),
2071 Importer.Import(Params->getRAngleLoc()));
2075 ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) {
2076 switch (From.getKind()) {
2077 case TemplateArgument::Null:
2078 return TemplateArgument();
2080 case TemplateArgument::Type: {
2081 QualType ToType = Importer.Import(From.getAsType());
2082 if (ToType.isNull())
2083 return TemplateArgument();
2084 return TemplateArgument(ToType);
2087 case TemplateArgument::Integral: {
2088 QualType ToType = Importer.Import(From.getIntegralType());
2089 if (ToType.isNull())
2090 return TemplateArgument();
2091 return TemplateArgument(From, ToType);
2094 case TemplateArgument::Declaration: {
2095 ValueDecl *FromD = From.getAsDecl();
2096 if (ValueDecl *To = cast_or_null<ValueDecl>(Importer.Import(FromD)))
2097 return TemplateArgument(To, From.isDeclForReferenceParam());
2098 return TemplateArgument();
2101 case TemplateArgument::NullPtr: {
2102 QualType ToType = Importer.Import(From.getNullPtrType());
2103 if (ToType.isNull())
2104 return TemplateArgument();
2105 return TemplateArgument(ToType, /*isNullPtr*/true);
2108 case TemplateArgument::Template: {
2109 TemplateName ToTemplate = Importer.Import(From.getAsTemplate());
2110 if (ToTemplate.isNull())
2111 return TemplateArgument();
2113 return TemplateArgument(ToTemplate);
2116 case TemplateArgument::TemplateExpansion: {
2117 TemplateName ToTemplate
2118 = Importer.Import(From.getAsTemplateOrTemplatePattern());
2119 if (ToTemplate.isNull())
2120 return TemplateArgument();
2122 return TemplateArgument(ToTemplate, From.getNumTemplateExpansions());
2125 case TemplateArgument::Expression:
2126 if (Expr *ToExpr = Importer.Import(From.getAsExpr()))
2127 return TemplateArgument(ToExpr);
2128 return TemplateArgument();
2130 case TemplateArgument::Pack: {
2131 SmallVector<TemplateArgument, 2> ToPack;
2132 ToPack.reserve(From.pack_size());
2133 if (ImportTemplateArguments(From.pack_begin(), From.pack_size(), ToPack))
2134 return TemplateArgument();
2136 TemplateArgument *ToArgs
2137 = new (Importer.getToContext()) TemplateArgument[ToPack.size()];
2138 std::copy(ToPack.begin(), ToPack.end(), ToArgs);
2139 return TemplateArgument(ToArgs, ToPack.size());
2143 llvm_unreachable("Invalid template argument kind");
2146 bool ASTNodeImporter::ImportTemplateArguments(const TemplateArgument *FromArgs,
2147 unsigned NumFromArgs,
2148 SmallVectorImpl<TemplateArgument> &ToArgs) {
2149 for (unsigned I = 0; I != NumFromArgs; ++I) {
2150 TemplateArgument To = ImportTemplateArgument(FromArgs[I]);
2151 if (To.isNull() && !FromArgs[I].isNull())
2154 ToArgs.push_back(To);
2160 bool ASTNodeImporter::IsStructuralMatch(RecordDecl *FromRecord,
2161 RecordDecl *ToRecord, bool Complain) {
2162 // Eliminate a potential failure point where we attempt to re-import
2163 // something we're trying to import while completing ToRecord.
2164 Decl *ToOrigin = Importer.GetOriginalDecl(ToRecord);
2166 RecordDecl *ToOriginRecord = dyn_cast<RecordDecl>(ToOrigin);
2168 ToRecord = ToOriginRecord;
2171 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2172 ToRecord->getASTContext(),
2173 Importer.getNonEquivalentDecls(),
2175 return Ctx.IsStructurallyEquivalent(FromRecord, ToRecord);
2178 bool ASTNodeImporter::IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
2180 StructuralEquivalenceContext Ctx(
2181 Importer.getFromContext(), Importer.getToContext(),
2182 Importer.getNonEquivalentDecls(), false, Complain);
2183 return Ctx.IsStructurallyEquivalent(FromVar, ToVar);
2186 bool ASTNodeImporter::IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToEnum) {
2187 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2188 Importer.getToContext(),
2189 Importer.getNonEquivalentDecls());
2190 return Ctx.IsStructurallyEquivalent(FromEnum, ToEnum);
2193 bool ASTNodeImporter::IsStructuralMatch(EnumConstantDecl *FromEC,
2194 EnumConstantDecl *ToEC)
2196 const llvm::APSInt &FromVal = FromEC->getInitVal();
2197 const llvm::APSInt &ToVal = ToEC->getInitVal();
2199 return FromVal.isSigned() == ToVal.isSigned() &&
2200 FromVal.getBitWidth() == ToVal.getBitWidth() &&
2204 bool ASTNodeImporter::IsStructuralMatch(ClassTemplateDecl *From,
2205 ClassTemplateDecl *To) {
2206 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2207 Importer.getToContext(),
2208 Importer.getNonEquivalentDecls());
2209 return Ctx.IsStructurallyEquivalent(From, To);
2212 bool ASTNodeImporter::IsStructuralMatch(VarTemplateDecl *From,
2213 VarTemplateDecl *To) {
2214 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2215 Importer.getToContext(),
2216 Importer.getNonEquivalentDecls());
2217 return Ctx.IsStructurallyEquivalent(From, To);
2220 Decl *ASTNodeImporter::VisitDecl(Decl *D) {
2221 Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
2222 << D->getDeclKindName();
2226 Decl *ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
2227 TranslationUnitDecl *ToD =
2228 Importer.getToContext().getTranslationUnitDecl();
2230 Importer.Imported(D, ToD);
2235 Decl *ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) {
2236 // Import the major distinguishing characteristics of this namespace.
2237 DeclContext *DC, *LexicalDC;
2238 DeclarationName Name;
2240 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2243 NamespaceDecl *MergeWithNamespace = nullptr;
2245 // This is an anonymous namespace. Adopt an existing anonymous
2246 // namespace if we can.
2247 // FIXME: Not testable.
2248 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC))
2249 MergeWithNamespace = TU->getAnonymousNamespace();
2251 MergeWithNamespace = cast<NamespaceDecl>(DC)->getAnonymousNamespace();
2253 SmallVector<NamedDecl *, 4> ConflictingDecls;
2254 SmallVector<NamedDecl *, 2> FoundDecls;
2255 DC->localUncachedLookup(Name, FoundDecls);
2256 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2257 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Namespace))
2260 if (NamespaceDecl *FoundNS = dyn_cast<NamespaceDecl>(FoundDecls[I])) {
2261 MergeWithNamespace = FoundNS;
2262 ConflictingDecls.clear();
2266 ConflictingDecls.push_back(FoundDecls[I]);
2269 if (!ConflictingDecls.empty()) {
2270 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Namespace,
2271 ConflictingDecls.data(),
2272 ConflictingDecls.size());
2276 // Create the "to" namespace, if needed.
2277 NamespaceDecl *ToNamespace = MergeWithNamespace;
2279 ToNamespace = NamespaceDecl::Create(Importer.getToContext(), DC,
2281 Importer.Import(D->getLocStart()),
2282 Loc, Name.getAsIdentifierInfo(),
2283 /*PrevDecl=*/nullptr);
2284 ToNamespace->setLexicalDeclContext(LexicalDC);
2285 LexicalDC->addDeclInternal(ToNamespace);
2287 // If this is an anonymous namespace, register it as the anonymous
2288 // namespace within its context.
2290 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC))
2291 TU->setAnonymousNamespace(ToNamespace);
2293 cast<NamespaceDecl>(DC)->setAnonymousNamespace(ToNamespace);
2296 Importer.Imported(D, ToNamespace);
2298 ImportDeclContext(D);
2303 Decl *ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) {
2304 // Import the major distinguishing characteristics of this typedef.
2305 DeclContext *DC, *LexicalDC;
2306 DeclarationName Name;
2308 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2311 // If this typedef is not in block scope, determine whether we've
2312 // seen a typedef with the same name (that we can merge with) or any
2313 // other entity by that name (which name lookup could conflict with).
2314 if (!DC->isFunctionOrMethod()) {
2315 SmallVector<NamedDecl *, 4> ConflictingDecls;
2316 unsigned IDNS = Decl::IDNS_Ordinary;
2317 SmallVector<NamedDecl *, 2> FoundDecls;
2318 DC->localUncachedLookup(Name, FoundDecls);
2319 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2320 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2322 if (TypedefNameDecl *FoundTypedef =
2323 dyn_cast<TypedefNameDecl>(FoundDecls[I])) {
2324 if (Importer.IsStructurallyEquivalent(D->getUnderlyingType(),
2325 FoundTypedef->getUnderlyingType()))
2326 return Importer.Imported(D, FoundTypedef);
2329 ConflictingDecls.push_back(FoundDecls[I]);
2332 if (!ConflictingDecls.empty()) {
2333 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2334 ConflictingDecls.data(),
2335 ConflictingDecls.size());
2341 // Import the underlying type of this typedef;
2342 QualType T = Importer.Import(D->getUnderlyingType());
2346 // Create the new typedef node.
2347 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
2348 SourceLocation StartL = Importer.Import(D->getLocStart());
2349 TypedefNameDecl *ToTypedef;
2351 ToTypedef = TypeAliasDecl::Create(Importer.getToContext(), DC,
2353 Name.getAsIdentifierInfo(),
2356 ToTypedef = TypedefDecl::Create(Importer.getToContext(), DC,
2358 Name.getAsIdentifierInfo(),
2361 ToTypedef->setAccess(D->getAccess());
2362 ToTypedef->setLexicalDeclContext(LexicalDC);
2363 Importer.Imported(D, ToTypedef);
2364 LexicalDC->addDeclInternal(ToTypedef);
2369 Decl *ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) {
2370 return VisitTypedefNameDecl(D, /*IsAlias=*/false);
2373 Decl *ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) {
2374 return VisitTypedefNameDecl(D, /*IsAlias=*/true);
2377 Decl *ASTNodeImporter::VisitEnumDecl(EnumDecl *D) {
2378 // Import the major distinguishing characteristics of this enum.
2379 DeclContext *DC, *LexicalDC;
2380 DeclarationName Name;
2382 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2385 // Figure out what enum name we're looking for.
2386 unsigned IDNS = Decl::IDNS_Tag;
2387 DeclarationName SearchName = Name;
2388 if (!SearchName && D->getTypedefNameForAnonDecl()) {
2389 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName());
2390 IDNS = Decl::IDNS_Ordinary;
2391 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
2392 IDNS |= Decl::IDNS_Ordinary;
2394 // We may already have an enum of the same name; try to find and match it.
2395 if (!DC->isFunctionOrMethod() && SearchName) {
2396 SmallVector<NamedDecl *, 4> ConflictingDecls;
2397 SmallVector<NamedDecl *, 2> FoundDecls;
2398 DC->localUncachedLookup(SearchName, FoundDecls);
2399 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2400 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2403 Decl *Found = FoundDecls[I];
2404 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
2405 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
2406 Found = Tag->getDecl();
2409 if (EnumDecl *FoundEnum = dyn_cast<EnumDecl>(Found)) {
2410 if (IsStructuralMatch(D, FoundEnum))
2411 return Importer.Imported(D, FoundEnum);
2414 ConflictingDecls.push_back(FoundDecls[I]);
2417 if (!ConflictingDecls.empty()) {
2418 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2419 ConflictingDecls.data(),
2420 ConflictingDecls.size());
2424 // Create the enum declaration.
2425 EnumDecl *D2 = EnumDecl::Create(Importer.getToContext(), DC,
2426 Importer.Import(D->getLocStart()),
2427 Loc, Name.getAsIdentifierInfo(), nullptr,
2428 D->isScoped(), D->isScopedUsingClassTag(),
2430 // Import the qualifier, if any.
2431 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2432 D2->setAccess(D->getAccess());
2433 D2->setLexicalDeclContext(LexicalDC);
2434 Importer.Imported(D, D2);
2435 LexicalDC->addDeclInternal(D2);
2437 // Import the integer type.
2438 QualType ToIntegerType = Importer.Import(D->getIntegerType());
2439 if (ToIntegerType.isNull())
2441 D2->setIntegerType(ToIntegerType);
2443 // Import the definition
2444 if (D->isCompleteDefinition() && ImportDefinition(D, D2))
2450 Decl *ASTNodeImporter::VisitRecordDecl(RecordDecl *D) {
2451 // If this record has a definition in the translation unit we're coming from,
2452 // but this particular declaration is not that definition, import the
2453 // definition and map to that.
2454 TagDecl *Definition = D->getDefinition();
2455 if (Definition && Definition != D) {
2456 Decl *ImportedDef = Importer.Import(Definition);
2460 return Importer.Imported(D, ImportedDef);
2463 // Import the major distinguishing characteristics of this record.
2464 DeclContext *DC, *LexicalDC;
2465 DeclarationName Name;
2467 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2470 // Figure out what structure name we're looking for.
2471 unsigned IDNS = Decl::IDNS_Tag;
2472 DeclarationName SearchName = Name;
2473 if (!SearchName && D->getTypedefNameForAnonDecl()) {
2474 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName());
2475 IDNS = Decl::IDNS_Ordinary;
2476 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
2477 IDNS |= Decl::IDNS_Ordinary;
2479 // We may already have a record of the same name; try to find and match it.
2480 RecordDecl *AdoptDecl = nullptr;
2481 if (!DC->isFunctionOrMethod()) {
2482 SmallVector<NamedDecl *, 4> ConflictingDecls;
2483 SmallVector<NamedDecl *, 2> FoundDecls;
2484 DC->localUncachedLookup(SearchName, FoundDecls);
2485 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2486 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2489 Decl *Found = FoundDecls[I];
2490 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
2491 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
2492 Found = Tag->getDecl();
2495 if (RecordDecl *FoundRecord = dyn_cast<RecordDecl>(Found)) {
2496 if (D->isAnonymousStructOrUnion() &&
2497 FoundRecord->isAnonymousStructOrUnion()) {
2498 // If both anonymous structs/unions are in a record context, make sure
2499 // they occur in the same location in the context records.
2500 if (Optional<unsigned> Index1
2501 = findAnonymousStructOrUnionIndex(D)) {
2502 if (Optional<unsigned> Index2 =
2503 findAnonymousStructOrUnionIndex(FoundRecord)) {
2504 if (*Index1 != *Index2)
2510 if (RecordDecl *FoundDef = FoundRecord->getDefinition()) {
2511 if ((SearchName && !D->isCompleteDefinition())
2512 || (D->isCompleteDefinition() &&
2513 D->isAnonymousStructOrUnion()
2514 == FoundDef->isAnonymousStructOrUnion() &&
2515 IsStructuralMatch(D, FoundDef))) {
2516 // The record types structurally match, or the "from" translation
2517 // unit only had a forward declaration anyway; call it the same
2519 // FIXME: For C++, we should also merge methods here.
2520 return Importer.Imported(D, FoundDef);
2522 } else if (!D->isCompleteDefinition()) {
2523 // We have a forward declaration of this type, so adopt that forward
2524 // declaration rather than building a new one.
2526 // If one or both can be completed from external storage then try one
2527 // last time to complete and compare them before doing this.
2529 if (FoundRecord->hasExternalLexicalStorage() &&
2530 !FoundRecord->isCompleteDefinition())
2531 FoundRecord->getASTContext().getExternalSource()->CompleteType(FoundRecord);
2532 if (D->hasExternalLexicalStorage())
2533 D->getASTContext().getExternalSource()->CompleteType(D);
2535 if (FoundRecord->isCompleteDefinition() &&
2536 D->isCompleteDefinition() &&
2537 !IsStructuralMatch(D, FoundRecord))
2540 AdoptDecl = FoundRecord;
2542 } else if (!SearchName) {
2547 ConflictingDecls.push_back(FoundDecls[I]);
2550 if (!ConflictingDecls.empty() && SearchName) {
2551 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2552 ConflictingDecls.data(),
2553 ConflictingDecls.size());
2557 // Create the record declaration.
2558 RecordDecl *D2 = AdoptDecl;
2559 SourceLocation StartLoc = Importer.Import(D->getLocStart());
2561 if (isa<CXXRecordDecl>(D)) {
2562 CXXRecordDecl *D2CXX = CXXRecordDecl::Create(Importer.getToContext(),
2565 Name.getAsIdentifierInfo());
2567 D2->setAccess(D->getAccess());
2569 D2 = RecordDecl::Create(Importer.getToContext(), D->getTagKind(),
2570 DC, StartLoc, Loc, Name.getAsIdentifierInfo());
2573 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2574 D2->setLexicalDeclContext(LexicalDC);
2575 LexicalDC->addDeclInternal(D2);
2576 if (D->isAnonymousStructOrUnion())
2577 D2->setAnonymousStructOrUnion(true);
2580 Importer.Imported(D, D2);
2582 if (D->isCompleteDefinition() && ImportDefinition(D, D2, IDK_Default))
2588 Decl *ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) {
2589 // Import the major distinguishing characteristics of this enumerator.
2590 DeclContext *DC, *LexicalDC;
2591 DeclarationName Name;
2593 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2596 QualType T = Importer.Import(D->getType());
2600 // Determine whether there are any other declarations with the same name and
2601 // in the same context.
2602 if (!LexicalDC->isFunctionOrMethod()) {
2603 SmallVector<NamedDecl *, 4> ConflictingDecls;
2604 unsigned IDNS = Decl::IDNS_Ordinary;
2605 SmallVector<NamedDecl *, 2> FoundDecls;
2606 DC->localUncachedLookup(Name, FoundDecls);
2607 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2608 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2611 if (EnumConstantDecl *FoundEnumConstant
2612 = dyn_cast<EnumConstantDecl>(FoundDecls[I])) {
2613 if (IsStructuralMatch(D, FoundEnumConstant))
2614 return Importer.Imported(D, FoundEnumConstant);
2617 ConflictingDecls.push_back(FoundDecls[I]);
2620 if (!ConflictingDecls.empty()) {
2621 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2622 ConflictingDecls.data(),
2623 ConflictingDecls.size());
2629 Expr *Init = Importer.Import(D->getInitExpr());
2630 if (D->getInitExpr() && !Init)
2633 EnumConstantDecl *ToEnumerator
2634 = EnumConstantDecl::Create(Importer.getToContext(), cast<EnumDecl>(DC), Loc,
2635 Name.getAsIdentifierInfo(), T,
2636 Init, D->getInitVal());
2637 ToEnumerator->setAccess(D->getAccess());
2638 ToEnumerator->setLexicalDeclContext(LexicalDC);
2639 Importer.Imported(D, ToEnumerator);
2640 LexicalDC->addDeclInternal(ToEnumerator);
2641 return ToEnumerator;
2644 Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
2645 // Import the major distinguishing characteristics of this function.
2646 DeclContext *DC, *LexicalDC;
2647 DeclarationName Name;
2649 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
2652 // Try to find a function in our own ("to") context with the same name, same
2653 // type, and in the same context as the function we're importing.
2654 if (!LexicalDC->isFunctionOrMethod()) {
2655 SmallVector<NamedDecl *, 4> ConflictingDecls;
2656 unsigned IDNS = Decl::IDNS_Ordinary;
2657 SmallVector<NamedDecl *, 2> FoundDecls;
2658 DC->localUncachedLookup(Name, FoundDecls);
2659 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2660 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2663 if (FunctionDecl *FoundFunction = dyn_cast<FunctionDecl>(FoundDecls[I])) {
2664 if (FoundFunction->hasExternalFormalLinkage() &&
2665 D->hasExternalFormalLinkage()) {
2666 if (Importer.IsStructurallyEquivalent(D->getType(),
2667 FoundFunction->getType())) {
2668 // FIXME: Actually try to merge the body and other attributes.
2669 return Importer.Imported(D, FoundFunction);
2672 // FIXME: Check for overloading more carefully, e.g., by boosting
2673 // Sema::IsOverload out to the AST library.
2675 // Function overloading is okay in C++.
2676 if (Importer.getToContext().getLangOpts().CPlusPlus)
2679 // Complain about inconsistent function types.
2680 Importer.ToDiag(Loc, diag::err_odr_function_type_inconsistent)
2681 << Name << D->getType() << FoundFunction->getType();
2682 Importer.ToDiag(FoundFunction->getLocation(),
2683 diag::note_odr_value_here)
2684 << FoundFunction->getType();
2688 ConflictingDecls.push_back(FoundDecls[I]);
2691 if (!ConflictingDecls.empty()) {
2692 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2693 ConflictingDecls.data(),
2694 ConflictingDecls.size());
2700 DeclarationNameInfo NameInfo(Name, Loc);
2701 // Import additional name location/type info.
2702 ImportDeclarationNameLoc(D->getNameInfo(), NameInfo);
2704 QualType FromTy = D->getType();
2705 bool usedDifferentExceptionSpec = false;
2707 if (const FunctionProtoType *
2708 FromFPT = D->getType()->getAs<FunctionProtoType>()) {
2709 FunctionProtoType::ExtProtoInfo FromEPI = FromFPT->getExtProtoInfo();
2710 // FunctionProtoType::ExtProtoInfo's ExceptionSpecDecl can point to the
2711 // FunctionDecl that we are importing the FunctionProtoType for.
2712 // To avoid an infinite recursion when importing, create the FunctionDecl
2713 // with a simplified function type and update it afterwards.
2714 if (FromEPI.ExceptionSpec.SourceDecl ||
2715 FromEPI.ExceptionSpec.SourceTemplate ||
2716 FromEPI.ExceptionSpec.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, InsertPos);
4095 // We already have a class template specialization with these template
4098 // FIXME: Check for specialization vs. instantiation errors.
4100 if (RecordDecl *FoundDef = D2->getDefinition()) {
4101 if (!D->isCompleteDefinition() || IsStructuralMatch(D, FoundDef)) {
4102 // The record types structurally match, or the "from" translation
4103 // unit only had a forward declaration anyway; call it the same
4105 return Importer.Imported(D, FoundDef);
4109 // Create a new specialization.
4110 D2 = ClassTemplateSpecializationDecl::Create(Importer.getToContext(),
4111 D->getTagKind(), DC,
4114 TemplateArgs.data(),
4115 TemplateArgs.size(),
4116 /*PrevDecl=*/nullptr);
4117 D2->setSpecializationKind(D->getSpecializationKind());
4119 // Add this specialization to the class template.
4120 ClassTemplate->AddSpecialization(D2, InsertPos);
4122 // Import the qualifier, if any.
4123 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
4125 // Add the specialization to this context.
4126 D2->setLexicalDeclContext(LexicalDC);
4127 LexicalDC->addDeclInternal(D2);
4129 Importer.Imported(D, D2);
4131 if (D->isCompleteDefinition() && ImportDefinition(D, D2))
4137 Decl *ASTNodeImporter::VisitVarTemplateDecl(VarTemplateDecl *D) {
4138 // If this variable has a definition in the translation unit we're coming
4140 // but this particular declaration is not that definition, import the
4141 // definition and map to that.
4142 VarDecl *Definition =
4143 cast_or_null<VarDecl>(D->getTemplatedDecl()->getDefinition());
4144 if (Definition && Definition != D->getTemplatedDecl()) {
4145 Decl *ImportedDef = Importer.Import(Definition->getDescribedVarTemplate());
4149 return Importer.Imported(D, ImportedDef);
4152 // Import the major distinguishing characteristics of this variable template.
4153 DeclContext *DC, *LexicalDC;
4154 DeclarationName Name;
4156 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
4159 // We may already have a template of the same name; try to find and match it.
4160 assert(!DC->isFunctionOrMethod() &&
4161 "Variable templates cannot be declared at function scope");
4162 SmallVector<NamedDecl *, 4> ConflictingDecls;
4163 SmallVector<NamedDecl *, 2> FoundDecls;
4164 DC->localUncachedLookup(Name, FoundDecls);
4165 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4166 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
4169 Decl *Found = FoundDecls[I];
4170 if (VarTemplateDecl *FoundTemplate = dyn_cast<VarTemplateDecl>(Found)) {
4171 if (IsStructuralMatch(D, FoundTemplate)) {
4172 // The variable templates structurally match; call it the same template.
4173 Importer.Imported(D->getTemplatedDecl(),
4174 FoundTemplate->getTemplatedDecl());
4175 return Importer.Imported(D, FoundTemplate);
4179 ConflictingDecls.push_back(FoundDecls[I]);
4182 if (!ConflictingDecls.empty()) {
4183 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary,
4184 ConflictingDecls.data(),
4185 ConflictingDecls.size());
4191 VarDecl *DTemplated = D->getTemplatedDecl();
4194 QualType T = Importer.Import(DTemplated->getType());
4198 // Create the declaration that is being templated.
4199 SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart());
4200 SourceLocation IdLoc = Importer.Import(DTemplated->getLocation());
4201 TypeSourceInfo *TInfo = Importer.Import(DTemplated->getTypeSourceInfo());
4202 VarDecl *D2Templated = VarDecl::Create(Importer.getToContext(), DC, StartLoc,
4203 IdLoc, Name.getAsIdentifierInfo(), T,
4204 TInfo, DTemplated->getStorageClass());
4205 D2Templated->setAccess(DTemplated->getAccess());
4206 D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc()));
4207 D2Templated->setLexicalDeclContext(LexicalDC);
4209 // Importer.Imported(DTemplated, D2Templated);
4210 // LexicalDC->addDeclInternal(D2Templated);
4212 // Merge the initializer.
4213 if (ImportDefinition(DTemplated, D2Templated))
4216 // Create the variable template declaration itself.
4217 TemplateParameterList *TemplateParams =
4218 ImportTemplateParameterList(D->getTemplateParameters());
4219 if (!TemplateParams)
4222 VarTemplateDecl *D2 = VarTemplateDecl::Create(
4223 Importer.getToContext(), DC, Loc, Name, TemplateParams, D2Templated);
4224 D2Templated->setDescribedVarTemplate(D2);
4226 D2->setAccess(D->getAccess());
4227 D2->setLexicalDeclContext(LexicalDC);
4228 LexicalDC->addDeclInternal(D2);
4230 // Note the relationship between the variable templates.
4231 Importer.Imported(D, D2);
4232 Importer.Imported(DTemplated, D2Templated);
4234 if (DTemplated->isThisDeclarationADefinition() &&
4235 !D2Templated->isThisDeclarationADefinition()) {
4236 // FIXME: Import definition!
4242 Decl *ASTNodeImporter::VisitVarTemplateSpecializationDecl(
4243 VarTemplateSpecializationDecl *D) {
4244 // If this record has a definition in the translation unit we're coming from,
4245 // but this particular declaration is not that definition, import the
4246 // definition and map to that.
4247 VarDecl *Definition = D->getDefinition();
4248 if (Definition && Definition != D) {
4249 Decl *ImportedDef = Importer.Import(Definition);
4253 return Importer.Imported(D, ImportedDef);
4256 VarTemplateDecl *VarTemplate = cast_or_null<VarTemplateDecl>(
4257 Importer.Import(D->getSpecializedTemplate()));
4261 // Import the context of this declaration.
4262 DeclContext *DC = VarTemplate->getDeclContext();
4266 DeclContext *LexicalDC = DC;
4267 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4268 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4273 // Import the location of this declaration.
4274 SourceLocation StartLoc = Importer.Import(D->getLocStart());
4275 SourceLocation IdLoc = Importer.Import(D->getLocation());
4277 // Import template arguments.
4278 SmallVector<TemplateArgument, 2> TemplateArgs;
4279 if (ImportTemplateArguments(D->getTemplateArgs().data(),
4280 D->getTemplateArgs().size(), TemplateArgs))
4283 // Try to find an existing specialization with these template arguments.
4284 void *InsertPos = nullptr;
4285 VarTemplateSpecializationDecl *D2 = VarTemplate->findSpecialization(
4286 TemplateArgs, InsertPos);
4288 // We already have a variable template specialization with these template
4291 // FIXME: Check for specialization vs. instantiation errors.
4293 if (VarDecl *FoundDef = D2->getDefinition()) {
4294 if (!D->isThisDeclarationADefinition() ||
4295 IsStructuralMatch(D, FoundDef)) {
4296 // The record types structurally match, or the "from" translation
4297 // unit only had a forward declaration anyway; call it the same
4299 return Importer.Imported(D, FoundDef);
4305 QualType T = Importer.Import(D->getType());
4308 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
4310 // Create a new specialization.
4311 D2 = VarTemplateSpecializationDecl::Create(
4312 Importer.getToContext(), DC, StartLoc, IdLoc, VarTemplate, T, TInfo,
4313 D->getStorageClass(), TemplateArgs.data(), TemplateArgs.size());
4314 D2->setSpecializationKind(D->getSpecializationKind());
4315 D2->setTemplateArgsInfo(D->getTemplateArgsInfo());
4317 // Add this specialization to the class template.
4318 VarTemplate->AddSpecialization(D2, InsertPos);
4320 // Import the qualifier, if any.
4321 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
4323 // Add the specialization to this context.
4324 D2->setLexicalDeclContext(LexicalDC);
4325 LexicalDC->addDeclInternal(D2);
4327 Importer.Imported(D, D2);
4329 if (D->isThisDeclarationADefinition() && ImportDefinition(D, D2))
4335 //----------------------------------------------------------------------------
4336 // Import Statements
4337 //----------------------------------------------------------------------------
4339 Stmt *ASTNodeImporter::VisitStmt(Stmt *S) {
4340 Importer.FromDiag(S->getLocStart(), diag::err_unsupported_ast_node)
4341 << S->getStmtClassName();
4345 //----------------------------------------------------------------------------
4346 // Import Expressions
4347 //----------------------------------------------------------------------------
4348 Expr *ASTNodeImporter::VisitExpr(Expr *E) {
4349 Importer.FromDiag(E->getLocStart(), diag::err_unsupported_ast_node)
4350 << E->getStmtClassName();
4354 Expr *ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) {
4355 ValueDecl *ToD = cast_or_null<ValueDecl>(Importer.Import(E->getDecl()));
4359 NamedDecl *FoundD = nullptr;
4360 if (E->getDecl() != E->getFoundDecl()) {
4361 FoundD = cast_or_null<NamedDecl>(Importer.Import(E->getFoundDecl()));
4366 QualType T = Importer.Import(E->getType());
4370 DeclRefExpr *DRE = DeclRefExpr::Create(Importer.getToContext(),
4371 Importer.Import(E->getQualifierLoc()),
4372 Importer.Import(E->getTemplateKeywordLoc()),
4374 E->refersToEnclosingLocal(),
4375 Importer.Import(E->getLocation()),
4376 T, E->getValueKind(),
4378 /*FIXME:TemplateArgs=*/nullptr);
4379 if (E->hadMultipleCandidates())
4380 DRE->setHadMultipleCandidates(true);
4384 Expr *ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) {
4385 QualType T = Importer.Import(E->getType());
4389 return IntegerLiteral::Create(Importer.getToContext(),
4391 Importer.Import(E->getLocation()));
4394 Expr *ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) {
4395 QualType T = Importer.Import(E->getType());
4399 return new (Importer.getToContext()) CharacterLiteral(E->getValue(),
4401 Importer.Import(E->getLocation()));
4404 Expr *ASTNodeImporter::VisitParenExpr(ParenExpr *E) {
4405 Expr *SubExpr = Importer.Import(E->getSubExpr());
4409 return new (Importer.getToContext())
4410 ParenExpr(Importer.Import(E->getLParen()),
4411 Importer.Import(E->getRParen()),
4415 Expr *ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) {
4416 QualType T = Importer.Import(E->getType());
4420 Expr *SubExpr = Importer.Import(E->getSubExpr());
4424 return new (Importer.getToContext()) UnaryOperator(SubExpr, E->getOpcode(),
4425 T, E->getValueKind(),
4427 Importer.Import(E->getOperatorLoc()));
4430 Expr *ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr(
4431 UnaryExprOrTypeTraitExpr *E) {
4432 QualType ResultType = Importer.Import(E->getType());
4434 if (E->isArgumentType()) {
4435 TypeSourceInfo *TInfo = Importer.Import(E->getArgumentTypeInfo());
4439 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(),
4441 Importer.Import(E->getOperatorLoc()),
4442 Importer.Import(E->getRParenLoc()));
4445 Expr *SubExpr = Importer.Import(E->getArgumentExpr());
4449 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(),
4450 SubExpr, ResultType,
4451 Importer.Import(E->getOperatorLoc()),
4452 Importer.Import(E->getRParenLoc()));
4455 Expr *ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) {
4456 QualType T = Importer.Import(E->getType());
4460 Expr *LHS = Importer.Import(E->getLHS());
4464 Expr *RHS = Importer.Import(E->getRHS());
4468 return new (Importer.getToContext()) BinaryOperator(LHS, RHS, E->getOpcode(),
4469 T, E->getValueKind(),
4471 Importer.Import(E->getOperatorLoc()),
4472 E->isFPContractable());
4475 Expr *ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
4476 QualType T = Importer.Import(E->getType());
4480 QualType CompLHSType = Importer.Import(E->getComputationLHSType());
4481 if (CompLHSType.isNull())
4484 QualType CompResultType = Importer.Import(E->getComputationResultType());
4485 if (CompResultType.isNull())
4488 Expr *LHS = Importer.Import(E->getLHS());
4492 Expr *RHS = Importer.Import(E->getRHS());
4496 return new (Importer.getToContext())
4497 CompoundAssignOperator(LHS, RHS, E->getOpcode(),
4498 T, E->getValueKind(),
4500 CompLHSType, CompResultType,
4501 Importer.Import(E->getOperatorLoc()),
4502 E->isFPContractable());
4505 static bool ImportCastPath(CastExpr *E, CXXCastPath &Path) {
4506 if (E->path_empty()) return false;
4508 // TODO: import cast paths
4512 Expr *ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
4513 QualType T = Importer.Import(E->getType());
4517 Expr *SubExpr = Importer.Import(E->getSubExpr());
4521 CXXCastPath BasePath;
4522 if (ImportCastPath(E, BasePath))
4525 return ImplicitCastExpr::Create(Importer.getToContext(), T, E->getCastKind(),
4526 SubExpr, &BasePath, E->getValueKind());
4529 Expr *ASTNodeImporter::VisitCStyleCastExpr(CStyleCastExpr *E) {
4530 QualType T = Importer.Import(E->getType());
4534 Expr *SubExpr = Importer.Import(E->getSubExpr());
4538 TypeSourceInfo *TInfo = Importer.Import(E->getTypeInfoAsWritten());
4539 if (!TInfo && E->getTypeInfoAsWritten())
4542 CXXCastPath BasePath;
4543 if (ImportCastPath(E, BasePath))
4546 return CStyleCastExpr::Create(Importer.getToContext(), T,
4547 E->getValueKind(), E->getCastKind(),
4548 SubExpr, &BasePath, TInfo,
4549 Importer.Import(E->getLParenLoc()),
4550 Importer.Import(E->getRParenLoc()));
4553 ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager,
4554 ASTContext &FromContext, FileManager &FromFileManager,
4556 : ToContext(ToContext), FromContext(FromContext),
4557 ToFileManager(ToFileManager), FromFileManager(FromFileManager),
4558 Minimal(MinimalImport), LastDiagFromFrom(false)
4560 ImportedDecls[FromContext.getTranslationUnitDecl()]
4561 = ToContext.getTranslationUnitDecl();
4564 ASTImporter::~ASTImporter() { }
4566 QualType ASTImporter::Import(QualType FromT) {
4570 const Type *fromTy = FromT.getTypePtr();
4572 // Check whether we've already imported this type.
4573 llvm::DenseMap<const Type *, const Type *>::iterator Pos
4574 = ImportedTypes.find(fromTy);
4575 if (Pos != ImportedTypes.end())
4576 return ToContext.getQualifiedType(Pos->second, FromT.getLocalQualifiers());
4579 ASTNodeImporter Importer(*this);
4580 QualType ToT = Importer.Visit(fromTy);
4584 // Record the imported type.
4585 ImportedTypes[fromTy] = ToT.getTypePtr();
4587 return ToContext.getQualifiedType(ToT, FromT.getLocalQualifiers());
4590 TypeSourceInfo *ASTImporter::Import(TypeSourceInfo *FromTSI) {
4594 // FIXME: For now we just create a "trivial" type source info based
4595 // on the type and a single location. Implement a real version of this.
4596 QualType T = Import(FromTSI->getType());
4600 return ToContext.getTrivialTypeSourceInfo(T,
4601 FromTSI->getTypeLoc().getLocStart());
4604 Decl *ASTImporter::Import(Decl *FromD) {
4608 ASTNodeImporter Importer(*this);
4610 // Check whether we've already imported this declaration.
4611 llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD);
4612 if (Pos != ImportedDecls.end()) {
4613 Decl *ToD = Pos->second;
4614 Importer.ImportDefinitionIfNeeded(FromD, ToD);
4619 Decl *ToD = Importer.Visit(FromD);
4623 // Record the imported declaration.
4624 ImportedDecls[FromD] = ToD;
4626 if (TagDecl *FromTag = dyn_cast<TagDecl>(FromD)) {
4627 // Keep track of anonymous tags that have an associated typedef.
4628 if (FromTag->getTypedefNameForAnonDecl())
4629 AnonTagsWithPendingTypedefs.push_back(FromTag);
4630 } else if (TypedefNameDecl *FromTypedef = dyn_cast<TypedefNameDecl>(FromD)) {
4631 // When we've finished transforming a typedef, see whether it was the
4632 // typedef for an anonymous tag.
4633 for (SmallVectorImpl<TagDecl *>::iterator
4634 FromTag = AnonTagsWithPendingTypedefs.begin(),
4635 FromTagEnd = AnonTagsWithPendingTypedefs.end();
4636 FromTag != FromTagEnd; ++FromTag) {
4637 if ((*FromTag)->getTypedefNameForAnonDecl() == FromTypedef) {
4638 if (TagDecl *ToTag = cast_or_null<TagDecl>(Import(*FromTag))) {
4639 // We found the typedef for an anonymous tag; link them.
4640 ToTag->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(ToD));
4641 AnonTagsWithPendingTypedefs.erase(FromTag);
4651 DeclContext *ASTImporter::ImportContext(DeclContext *FromDC) {
4655 DeclContext *ToDC = cast_or_null<DeclContext>(Import(cast<Decl>(FromDC)));
4659 // When we're using a record/enum/Objective-C class/protocol as a context, we
4660 // need it to have a definition.
4661 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(ToDC)) {
4662 RecordDecl *FromRecord = cast<RecordDecl>(FromDC);
4663 if (ToRecord->isCompleteDefinition()) {
4665 } else if (FromRecord->isCompleteDefinition()) {
4666 ASTNodeImporter(*this).ImportDefinition(FromRecord, ToRecord,
4667 ASTNodeImporter::IDK_Basic);
4669 CompleteDecl(ToRecord);
4671 } else if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(ToDC)) {
4672 EnumDecl *FromEnum = cast<EnumDecl>(FromDC);
4673 if (ToEnum->isCompleteDefinition()) {
4675 } else if (FromEnum->isCompleteDefinition()) {
4676 ASTNodeImporter(*this).ImportDefinition(FromEnum, ToEnum,
4677 ASTNodeImporter::IDK_Basic);
4679 CompleteDecl(ToEnum);
4681 } else if (ObjCInterfaceDecl *ToClass = dyn_cast<ObjCInterfaceDecl>(ToDC)) {
4682 ObjCInterfaceDecl *FromClass = cast<ObjCInterfaceDecl>(FromDC);
4683 if (ToClass->getDefinition()) {
4685 } else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) {
4686 ASTNodeImporter(*this).ImportDefinition(FromDef, ToClass,
4687 ASTNodeImporter::IDK_Basic);
4689 CompleteDecl(ToClass);
4691 } else if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(ToDC)) {
4692 ObjCProtocolDecl *FromProto = cast<ObjCProtocolDecl>(FromDC);
4693 if (ToProto->getDefinition()) {
4695 } else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) {
4696 ASTNodeImporter(*this).ImportDefinition(FromDef, ToProto,
4697 ASTNodeImporter::IDK_Basic);
4699 CompleteDecl(ToProto);
4706 Expr *ASTImporter::Import(Expr *FromE) {
4710 return cast_or_null<Expr>(Import(cast<Stmt>(FromE)));
4713 Stmt *ASTImporter::Import(Stmt *FromS) {
4717 // Check whether we've already imported this declaration.
4718 llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(FromS);
4719 if (Pos != ImportedStmts.end())
4723 ASTNodeImporter Importer(*this);
4724 Stmt *ToS = Importer.Visit(FromS);
4728 // Record the imported declaration.
4729 ImportedStmts[FromS] = ToS;
4733 NestedNameSpecifier *ASTImporter::Import(NestedNameSpecifier *FromNNS) {
4737 NestedNameSpecifier *prefix = Import(FromNNS->getPrefix());
4739 switch (FromNNS->getKind()) {
4740 case NestedNameSpecifier::Identifier:
4741 if (IdentifierInfo *II = Import(FromNNS->getAsIdentifier())) {
4742 return NestedNameSpecifier::Create(ToContext, prefix, II);
4746 case NestedNameSpecifier::Namespace:
4747 if (NamespaceDecl *NS =
4748 cast<NamespaceDecl>(Import(FromNNS->getAsNamespace()))) {
4749 return NestedNameSpecifier::Create(ToContext, prefix, NS);
4753 case NestedNameSpecifier::NamespaceAlias:
4754 if (NamespaceAliasDecl *NSAD =
4755 cast<NamespaceAliasDecl>(Import(FromNNS->getAsNamespaceAlias()))) {
4756 return NestedNameSpecifier::Create(ToContext, prefix, NSAD);
4760 case NestedNameSpecifier::Global:
4761 return NestedNameSpecifier::GlobalSpecifier(ToContext);
4763 case NestedNameSpecifier::TypeSpec:
4764 case NestedNameSpecifier::TypeSpecWithTemplate: {
4765 QualType T = Import(QualType(FromNNS->getAsType(), 0u));
4767 bool bTemplate = FromNNS->getKind() ==
4768 NestedNameSpecifier::TypeSpecWithTemplate;
4769 return NestedNameSpecifier::Create(ToContext, prefix,
4770 bTemplate, T.getTypePtr());
4776 llvm_unreachable("Invalid nested name specifier kind");
4779 NestedNameSpecifierLoc ASTImporter::Import(NestedNameSpecifierLoc FromNNS) {
4780 // FIXME: Implement!
4781 return NestedNameSpecifierLoc();
4784 TemplateName ASTImporter::Import(TemplateName From) {
4785 switch (From.getKind()) {
4786 case TemplateName::Template:
4787 if (TemplateDecl *ToTemplate
4788 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl())))
4789 return TemplateName(ToTemplate);
4791 return TemplateName();
4793 case TemplateName::OverloadedTemplate: {
4794 OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate();
4795 UnresolvedSet<2> ToTemplates;
4796 for (OverloadedTemplateStorage::iterator I = FromStorage->begin(),
4797 E = FromStorage->end();
4799 if (NamedDecl *To = cast_or_null<NamedDecl>(Import(*I)))
4800 ToTemplates.addDecl(To);
4802 return TemplateName();
4804 return ToContext.getOverloadedTemplateName(ToTemplates.begin(),
4808 case TemplateName::QualifiedTemplate: {
4809 QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName();
4810 NestedNameSpecifier *Qualifier = Import(QTN->getQualifier());
4812 return TemplateName();
4814 if (TemplateDecl *ToTemplate
4815 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl())))
4816 return ToContext.getQualifiedTemplateName(Qualifier,
4817 QTN->hasTemplateKeyword(),
4820 return TemplateName();
4823 case TemplateName::DependentTemplate: {
4824 DependentTemplateName *DTN = From.getAsDependentTemplateName();
4825 NestedNameSpecifier *Qualifier = Import(DTN->getQualifier());
4827 return TemplateName();
4829 if (DTN->isIdentifier()) {
4830 return ToContext.getDependentTemplateName(Qualifier,
4831 Import(DTN->getIdentifier()));
4834 return ToContext.getDependentTemplateName(Qualifier, DTN->getOperator());
4837 case TemplateName::SubstTemplateTemplateParm: {
4838 SubstTemplateTemplateParmStorage *subst
4839 = From.getAsSubstTemplateTemplateParm();
4840 TemplateTemplateParmDecl *param
4841 = cast_or_null<TemplateTemplateParmDecl>(Import(subst->getParameter()));
4843 return TemplateName();
4845 TemplateName replacement = Import(subst->getReplacement());
4846 if (replacement.isNull()) return TemplateName();
4848 return ToContext.getSubstTemplateTemplateParm(param, replacement);
4851 case TemplateName::SubstTemplateTemplateParmPack: {
4852 SubstTemplateTemplateParmPackStorage *SubstPack
4853 = From.getAsSubstTemplateTemplateParmPack();
4854 TemplateTemplateParmDecl *Param
4855 = cast_or_null<TemplateTemplateParmDecl>(
4856 Import(SubstPack->getParameterPack()));
4858 return TemplateName();
4860 ASTNodeImporter Importer(*this);
4861 TemplateArgument ArgPack
4862 = Importer.ImportTemplateArgument(SubstPack->getArgumentPack());
4863 if (ArgPack.isNull())
4864 return TemplateName();
4866 return ToContext.getSubstTemplateTemplateParmPack(Param, ArgPack);
4870 llvm_unreachable("Invalid template name kind");
4873 SourceLocation ASTImporter::Import(SourceLocation FromLoc) {
4874 if (FromLoc.isInvalid())
4875 return SourceLocation();
4877 SourceManager &FromSM = FromContext.getSourceManager();
4879 // For now, map everything down to its spelling location, so that we
4880 // don't have to import macro expansions.
4881 // FIXME: Import macro expansions!
4882 FromLoc = FromSM.getSpellingLoc(FromLoc);
4883 std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc);
4884 SourceManager &ToSM = ToContext.getSourceManager();
4885 return ToSM.getLocForStartOfFile(Import(Decomposed.first))
4886 .getLocWithOffset(Decomposed.second);
4889 SourceRange ASTImporter::Import(SourceRange FromRange) {
4890 return SourceRange(Import(FromRange.getBegin()), Import(FromRange.getEnd()));
4893 FileID ASTImporter::Import(FileID FromID) {
4894 llvm::DenseMap<FileID, FileID>::iterator Pos
4895 = ImportedFileIDs.find(FromID);
4896 if (Pos != ImportedFileIDs.end())
4899 SourceManager &FromSM = FromContext.getSourceManager();
4900 SourceManager &ToSM = ToContext.getSourceManager();
4901 const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FromID);
4902 assert(FromSLoc.isFile() && "Cannot handle macro expansions yet");
4904 // Include location of this file.
4905 SourceLocation ToIncludeLoc = Import(FromSLoc.getFile().getIncludeLoc());
4907 // Map the FileID for to the "to" source manager.
4909 const SrcMgr::ContentCache *Cache = FromSLoc.getFile().getContentCache();
4910 if (Cache->OrigEntry) {
4911 // FIXME: We probably want to use getVirtualFile(), so we don't hit the
4913 // FIXME: We definitely want to re-use the existing MemoryBuffer, rather
4914 // than mmap the files several times.
4915 const FileEntry *Entry = ToFileManager.getFile(Cache->OrigEntry->getName());
4916 ToID = ToSM.createFileID(Entry, ToIncludeLoc,
4917 FromSLoc.getFile().getFileCharacteristic());
4919 // FIXME: We want to re-use the existing MemoryBuffer!
4920 const llvm::MemoryBuffer *
4921 FromBuf = Cache->getBuffer(FromContext.getDiagnostics(), FromSM);
4922 std::unique_ptr<llvm::MemoryBuffer> ToBuf
4923 = llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBuffer(),
4924 FromBuf->getBufferIdentifier());
4925 ToID = ToSM.createFileID(ToBuf.release(),
4926 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);