1 //===--- ASTImporter.cpp - Importing ASTs from other Contexts ---*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines the ASTImporter class which imports AST nodes from one
11 // context into another context.
12 //
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"
25 #include <deque>
26
27 namespace clang {
28 class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, QualType>,
29 public DeclVisitor<ASTNodeImporter, Decl *>,
30 public StmtVisitor<ASTNodeImporter, Stmt *> {
31 ASTImporter &Importer;
32
33 public:
ASTNodeImporter(ASTImporter & Importer)34 explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) { }
35
36 using TypeVisitor<ASTNodeImporter, QualType>::Visit;
37 using DeclVisitor<ASTNodeImporter, Decl *>::Visit;
38 using StmtVisitor<ASTNodeImporter, Stmt *>::Visit;
39
40 // Importing types
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 QualType VisitInjectedClassNameType(const InjectedClassNameType *T);
68 // FIXME: DependentDecltypeType
69 QualType VisitRecordType(const RecordType *T);
70 QualType VisitEnumType(const EnumType *T);
71 QualType VisitAttributedType(const AttributedType *T);
72 QualType VisitTemplateTypeParmType(const TemplateTypeParmType *T);
73 // FIXME: SubstTemplateTypeParmType
74 QualType VisitTemplateSpecializationType(const TemplateSpecializationType *T);
75 QualType VisitElaboratedType(const ElaboratedType *T);
76 // FIXME: DependentNameType
77 // FIXME: DependentTemplateSpecializationType
78 QualType VisitObjCInterfaceType(const ObjCInterfaceType *T);
79 QualType VisitObjCObjectType(const ObjCObjectType *T);
80 QualType VisitObjCObjectPointerType(const ObjCObjectPointerType *T);
81
82 // Importing declarations
83 bool ImportDeclParts(NamedDecl *D, DeclContext *&DC,
84 DeclContext *&LexicalDC, DeclarationName &Name,
85 NamedDecl *&ToD, SourceLocation &Loc);
86 void ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD = nullptr);
87 void ImportDeclarationNameLoc(const DeclarationNameInfo &From,
88 DeclarationNameInfo& To);
89 void ImportDeclContext(DeclContext *FromDC, bool ForceImport = false);
90
91 typedef DesignatedInitExpr::Designator Designator;
92 Designator ImportDesignator(const Designator &D);
93
94
95 /// \brief What we should import from the definition.
96 enum ImportDefinitionKind {
97 /// \brief Import the default subset of the definition, which might be
98 /// nothing (if minimal import is set) or might be everything (if minimal
99 /// import is not set).
100 IDK_Default,
101 /// \brief Import everything.
102 IDK_Everything,
103 /// \brief Import only the bare bones needed to establish a valid
104 /// DeclContext.
105 IDK_Basic
106 };
107
shouldForceImportDeclContext(ImportDefinitionKind IDK)108 bool shouldForceImportDeclContext(ImportDefinitionKind IDK) {
109 return IDK == IDK_Everything ||
110 (IDK == IDK_Default && !Importer.isMinimalImport());
111 }
112
113 bool ImportDefinition(RecordDecl *From, RecordDecl *To,
114 ImportDefinitionKind Kind = IDK_Default);
115 bool ImportDefinition(VarDecl *From, VarDecl *To,
116 ImportDefinitionKind Kind = IDK_Default);
117 bool ImportDefinition(EnumDecl *From, EnumDecl *To,
118 ImportDefinitionKind Kind = IDK_Default);
119 bool ImportDefinition(ObjCInterfaceDecl *From, ObjCInterfaceDecl *To,
120 ImportDefinitionKind Kind = IDK_Default);
121 bool ImportDefinition(ObjCProtocolDecl *From, ObjCProtocolDecl *To,
122 ImportDefinitionKind Kind = IDK_Default);
123 TemplateParameterList *ImportTemplateParameterList(
124 TemplateParameterList *Params);
125 TemplateArgument ImportTemplateArgument(const TemplateArgument &From);
126 bool ImportTemplateArguments(const TemplateArgument *FromArgs,
127 unsigned NumFromArgs,
128 SmallVectorImpl<TemplateArgument> &ToArgs);
129 bool IsStructuralMatch(RecordDecl *FromRecord, RecordDecl *ToRecord,
130 bool Complain = true);
131 bool IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
132 bool Complain = true);
133 bool IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToRecord);
134 bool IsStructuralMatch(EnumConstantDecl *FromEC, EnumConstantDecl *ToEC);
135 bool IsStructuralMatch(ClassTemplateDecl *From, ClassTemplateDecl *To);
136 bool IsStructuralMatch(VarTemplateDecl *From, VarTemplateDecl *To);
137 Decl *VisitDecl(Decl *D);
138 Decl *VisitAccessSpecDecl(AccessSpecDecl *D);
139 Decl *VisitTranslationUnitDecl(TranslationUnitDecl *D);
140 Decl *VisitNamespaceDecl(NamespaceDecl *D);
141 Decl *VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias);
142 Decl *VisitTypedefDecl(TypedefDecl *D);
143 Decl *VisitTypeAliasDecl(TypeAliasDecl *D);
144 Decl *VisitLabelDecl(LabelDecl *D);
145 Decl *VisitEnumDecl(EnumDecl *D);
146 Decl *VisitRecordDecl(RecordDecl *D);
147 Decl *VisitEnumConstantDecl(EnumConstantDecl *D);
148 Decl *VisitFunctionDecl(FunctionDecl *D);
149 Decl *VisitCXXMethodDecl(CXXMethodDecl *D);
150 Decl *VisitCXXConstructorDecl(CXXConstructorDecl *D);
151 Decl *VisitCXXDestructorDecl(CXXDestructorDecl *D);
152 Decl *VisitCXXConversionDecl(CXXConversionDecl *D);
153 Decl *VisitFieldDecl(FieldDecl *D);
154 Decl *VisitIndirectFieldDecl(IndirectFieldDecl *D);
155 Decl *VisitObjCIvarDecl(ObjCIvarDecl *D);
156 Decl *VisitVarDecl(VarDecl *D);
157 Decl *VisitImplicitParamDecl(ImplicitParamDecl *D);
158 Decl *VisitParmVarDecl(ParmVarDecl *D);
159 Decl *VisitObjCMethodDecl(ObjCMethodDecl *D);
160 Decl *VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
161 Decl *VisitObjCCategoryDecl(ObjCCategoryDecl *D);
162 Decl *VisitObjCProtocolDecl(ObjCProtocolDecl *D);
163 Decl *VisitLinkageSpecDecl(LinkageSpecDecl *D);
164
165 ObjCTypeParamList *ImportObjCTypeParamList(ObjCTypeParamList *list);
166 Decl *VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
167 Decl *VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
168 Decl *VisitObjCImplementationDecl(ObjCImplementationDecl *D);
169 Decl *VisitObjCPropertyDecl(ObjCPropertyDecl *D);
170 Decl *VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
171 Decl *VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
172 Decl *VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
173 Decl *VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
174 Decl *VisitClassTemplateDecl(ClassTemplateDecl *D);
175 Decl *VisitClassTemplateSpecializationDecl(
176 ClassTemplateSpecializationDecl *D);
177 Decl *VisitVarTemplateDecl(VarTemplateDecl *D);
178 Decl *VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
179
180 // Importing statements
181 DeclGroupRef ImportDeclGroup(DeclGroupRef DG);
182
183 Stmt *VisitStmt(Stmt *S);
184 Stmt *VisitGCCAsmStmt(GCCAsmStmt *S);
185 Stmt *VisitDeclStmt(DeclStmt *S);
186 Stmt *VisitNullStmt(NullStmt *S);
187 Stmt *VisitCompoundStmt(CompoundStmt *S);
188 Stmt *VisitCaseStmt(CaseStmt *S);
189 Stmt *VisitDefaultStmt(DefaultStmt *S);
190 Stmt *VisitLabelStmt(LabelStmt *S);
191 Stmt *VisitAttributedStmt(AttributedStmt *S);
192 Stmt *VisitIfStmt(IfStmt *S);
193 Stmt *VisitSwitchStmt(SwitchStmt *S);
194 Stmt *VisitWhileStmt(WhileStmt *S);
195 Stmt *VisitDoStmt(DoStmt *S);
196 Stmt *VisitForStmt(ForStmt *S);
197 Stmt *VisitGotoStmt(GotoStmt *S);
198 Stmt *VisitIndirectGotoStmt(IndirectGotoStmt *S);
199 Stmt *VisitContinueStmt(ContinueStmt *S);
200 Stmt *VisitBreakStmt(BreakStmt *S);
201 Stmt *VisitReturnStmt(ReturnStmt *S);
202 // FIXME: MSAsmStmt
203 // FIXME: SEHExceptStmt
204 // FIXME: SEHFinallyStmt
205 // FIXME: SEHTryStmt
206 // FIXME: SEHLeaveStmt
207 // FIXME: CapturedStmt
208 Stmt *VisitCXXCatchStmt(CXXCatchStmt *S);
209 Stmt *VisitCXXTryStmt(CXXTryStmt *S);
210 Stmt *VisitCXXForRangeStmt(CXXForRangeStmt *S);
211 // FIXME: MSDependentExistsStmt
212 Stmt *VisitObjCForCollectionStmt(ObjCForCollectionStmt *S);
213 Stmt *VisitObjCAtCatchStmt(ObjCAtCatchStmt *S);
214 Stmt *VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S);
215 Stmt *VisitObjCAtTryStmt(ObjCAtTryStmt *S);
216 Stmt *VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S);
217 Stmt *VisitObjCAtThrowStmt(ObjCAtThrowStmt *S);
218 Stmt *VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S);
219
220 // Importing expressions
221 Expr *VisitExpr(Expr *E);
222 Expr *VisitVAArgExpr(VAArgExpr *E);
223 Expr *VisitGNUNullExpr(GNUNullExpr *E);
224 Expr *VisitPredefinedExpr(PredefinedExpr *E);
225 Expr *VisitDeclRefExpr(DeclRefExpr *E);
226 Expr *VisitImplicitValueInitExpr(ImplicitValueInitExpr *ILE);
227 Expr *VisitDesignatedInitExpr(DesignatedInitExpr *E);
228 Expr *VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E);
229 Expr *VisitIntegerLiteral(IntegerLiteral *E);
230 Expr *VisitFloatingLiteral(FloatingLiteral *E);
231 Expr *VisitCharacterLiteral(CharacterLiteral *E);
232 Expr *VisitStringLiteral(StringLiteral *E);
233 Expr *VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
234 Expr *VisitAtomicExpr(AtomicExpr *E);
235 Expr *VisitAddrLabelExpr(AddrLabelExpr *E);
236 Expr *VisitParenExpr(ParenExpr *E);
237 Expr *VisitParenListExpr(ParenListExpr *E);
238 Expr *VisitStmtExpr(StmtExpr *E);
239 Expr *VisitUnaryOperator(UnaryOperator *E);
240 Expr *VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E);
241 Expr *VisitBinaryOperator(BinaryOperator *E);
242 Expr *VisitConditionalOperator(ConditionalOperator *E);
243 Expr *VisitBinaryConditionalOperator(BinaryConditionalOperator *E);
244 Expr *VisitOpaqueValueExpr(OpaqueValueExpr *E);
245 Expr *VisitCompoundAssignOperator(CompoundAssignOperator *E);
246 Expr *VisitImplicitCastExpr(ImplicitCastExpr *E);
247 Expr *VisitCStyleCastExpr(CStyleCastExpr *E);
248 Expr *VisitCXXConstructExpr(CXXConstructExpr *E);
249 Expr *VisitCXXMemberCallExpr(CXXMemberCallExpr *E);
250 Expr *VisitCXXThisExpr(CXXThisExpr *E);
251 Expr *VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E);
252 Expr *VisitMemberExpr(MemberExpr *E);
253 Expr *VisitCallExpr(CallExpr *E);
254 Expr *VisitInitListExpr(InitListExpr *E);
255 Expr *VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E);
256 Expr *VisitCXXNamedCastExpr(CXXNamedCastExpr *E);
257
258 template<typename IIter, typename OIter>
ImportArray(IIter Ibegin,IIter Iend,OIter Obegin)259 void ImportArray(IIter Ibegin, IIter Iend, OIter Obegin) {
260 typedef typename std::remove_reference<decltype(*Obegin)>::type ItemT;
261 ASTImporter &ImporterRef = Importer;
262 std::transform(Ibegin, Iend, Obegin,
263 [&ImporterRef](ItemT From) -> ItemT {
264 return ImporterRef.Import(From);
265 });
266 }
267
268 template<typename IIter, typename OIter>
ImportArrayChecked(IIter Ibegin,IIter Iend,OIter Obegin)269 bool ImportArrayChecked(IIter Ibegin, IIter Iend, OIter Obegin) {
270 typedef typename std::remove_reference<decltype(**Obegin)>::type ItemT;
271 ASTImporter &ImporterRef = Importer;
272 bool Failed = false;
273 std::transform(Ibegin, Iend, Obegin,
274 [&ImporterRef, &Failed](ItemT *From) -> ItemT * {
275 ItemT *To = ImporterRef.Import(From);
276 if (!To && From)
277 Failed = true;
278 return To;
279 });
280 return Failed;
281 }
282 };
283 }
284
285 using namespace clang;
286
287 //----------------------------------------------------------------------------
288 // Structural Equivalence
289 //----------------------------------------------------------------------------
290
291 namespace {
292 struct StructuralEquivalenceContext {
293 /// \brief AST contexts for which we are checking structural equivalence.
294 ASTContext &C1, &C2;
295
296 /// \brief The set of "tentative" equivalences between two canonical
297 /// declarations, mapping from a declaration in the first context to the
298 /// declaration in the second context that we believe to be equivalent.
299 llvm::DenseMap<Decl *, Decl *> TentativeEquivalences;
300
301 /// \brief Queue of declarations in the first context whose equivalence
302 /// with a declaration in the second context still needs to be verified.
303 std::deque<Decl *> DeclsToCheck;
304
305 /// \brief Declaration (from, to) pairs that are known not to be equivalent
306 /// (which we have already complained about).
307 llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls;
308
309 /// \brief Whether we're being strict about the spelling of types when
310 /// unifying two types.
311 bool StrictTypeSpelling;
312
313 /// \brief Whether to complain about failures.
314 bool Complain;
315
316 /// \brief \c true if the last diagnostic came from C2.
317 bool LastDiagFromC2;
318
StructuralEquivalenceContext__anonad0640160311::StructuralEquivalenceContext319 StructuralEquivalenceContext(ASTContext &C1, ASTContext &C2,
320 llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls,
321 bool StrictTypeSpelling = false,
322 bool Complain = true)
323 : C1(C1), C2(C2), NonEquivalentDecls(NonEquivalentDecls),
324 StrictTypeSpelling(StrictTypeSpelling), Complain(Complain),
325 LastDiagFromC2(false) {}
326
327 /// \brief Determine whether the two declarations are structurally
328 /// equivalent.
329 bool IsStructurallyEquivalent(Decl *D1, Decl *D2);
330
331 /// \brief Determine whether the two types are structurally equivalent.
332 bool IsStructurallyEquivalent(QualType T1, QualType T2);
333
334 private:
335 /// \brief Finish checking all of the structural equivalences.
336 ///
337 /// \returns true if an error occurred, false otherwise.
338 bool Finish();
339
340 public:
Diag1__anonad0640160311::StructuralEquivalenceContext341 DiagnosticBuilder Diag1(SourceLocation Loc, unsigned DiagID) {
342 assert(Complain && "Not allowed to complain");
343 if (LastDiagFromC2)
344 C1.getDiagnostics().notePriorDiagnosticFrom(C2.getDiagnostics());
345 LastDiagFromC2 = false;
346 return C1.getDiagnostics().Report(Loc, DiagID);
347 }
348
Diag2__anonad0640160311::StructuralEquivalenceContext349 DiagnosticBuilder Diag2(SourceLocation Loc, unsigned DiagID) {
350 assert(Complain && "Not allowed to complain");
351 if (!LastDiagFromC2)
352 C2.getDiagnostics().notePriorDiagnosticFrom(C1.getDiagnostics());
353 LastDiagFromC2 = true;
354 return C2.getDiagnostics().Report(Loc, DiagID);
355 }
356 };
357 }
358
359 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
360 QualType T1, QualType T2);
361 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
362 Decl *D1, Decl *D2);
363
364 /// \brief Determine structural equivalence of two expressions.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,Expr * E1,Expr * E2)365 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
366 Expr *E1, Expr *E2) {
367 if (!E1 || !E2)
368 return E1 == E2;
369
370 // FIXME: Actually perform a structural comparison!
371 return true;
372 }
373
374 /// \brief Determine whether two identifiers are equivalent.
IsStructurallyEquivalent(const IdentifierInfo * Name1,const IdentifierInfo * Name2)375 static bool IsStructurallyEquivalent(const IdentifierInfo *Name1,
376 const IdentifierInfo *Name2) {
377 if (!Name1 || !Name2)
378 return Name1 == Name2;
379
380 return Name1->getName() == Name2->getName();
381 }
382
383 /// \brief Determine whether two nested-name-specifiers are equivalent.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,NestedNameSpecifier * NNS1,NestedNameSpecifier * NNS2)384 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
385 NestedNameSpecifier *NNS1,
386 NestedNameSpecifier *NNS2) {
387 // FIXME: Implement!
388 return true;
389 }
390
391 /// \brief Determine whether two template arguments are equivalent.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,const TemplateArgument & Arg1,const TemplateArgument & Arg2)392 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
393 const TemplateArgument &Arg1,
394 const TemplateArgument &Arg2) {
395 if (Arg1.getKind() != Arg2.getKind())
396 return false;
397
398 switch (Arg1.getKind()) {
399 case TemplateArgument::Null:
400 return true;
401
402 case TemplateArgument::Type:
403 return Context.IsStructurallyEquivalent(Arg1.getAsType(), Arg2.getAsType());
404
405 case TemplateArgument::Integral:
406 if (!Context.IsStructurallyEquivalent(Arg1.getIntegralType(),
407 Arg2.getIntegralType()))
408 return false;
409
410 return llvm::APSInt::isSameValue(Arg1.getAsIntegral(), Arg2.getAsIntegral());
411
412 case TemplateArgument::Declaration:
413 return Context.IsStructurallyEquivalent(Arg1.getAsDecl(), Arg2.getAsDecl());
414
415 case TemplateArgument::NullPtr:
416 return true; // FIXME: Is this correct?
417
418 case TemplateArgument::Template:
419 return IsStructurallyEquivalent(Context,
420 Arg1.getAsTemplate(),
421 Arg2.getAsTemplate());
422
423 case TemplateArgument::TemplateExpansion:
424 return IsStructurallyEquivalent(Context,
425 Arg1.getAsTemplateOrTemplatePattern(),
426 Arg2.getAsTemplateOrTemplatePattern());
427
428 case TemplateArgument::Expression:
429 return IsStructurallyEquivalent(Context,
430 Arg1.getAsExpr(), Arg2.getAsExpr());
431
432 case TemplateArgument::Pack:
433 if (Arg1.pack_size() != Arg2.pack_size())
434 return false;
435
436 for (unsigned I = 0, N = Arg1.pack_size(); I != N; ++I)
437 if (!IsStructurallyEquivalent(Context,
438 Arg1.pack_begin()[I],
439 Arg2.pack_begin()[I]))
440 return false;
441
442 return true;
443 }
444
445 llvm_unreachable("Invalid template argument kind");
446 }
447
448 /// \brief Determine structural equivalence for the common part of array
449 /// types.
IsArrayStructurallyEquivalent(StructuralEquivalenceContext & Context,const ArrayType * Array1,const ArrayType * Array2)450 static bool IsArrayStructurallyEquivalent(StructuralEquivalenceContext &Context,
451 const ArrayType *Array1,
452 const ArrayType *Array2) {
453 if (!IsStructurallyEquivalent(Context,
454 Array1->getElementType(),
455 Array2->getElementType()))
456 return false;
457 if (Array1->getSizeModifier() != Array2->getSizeModifier())
458 return false;
459 if (Array1->getIndexTypeQualifiers() != Array2->getIndexTypeQualifiers())
460 return false;
461
462 return true;
463 }
464
465 /// \brief Determine structural equivalence of two types.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,QualType T1,QualType T2)466 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
467 QualType T1, QualType T2) {
468 if (T1.isNull() || T2.isNull())
469 return T1.isNull() && T2.isNull();
470
471 if (!Context.StrictTypeSpelling) {
472 // We aren't being strict about token-to-token equivalence of types,
473 // so map down to the canonical type.
474 T1 = Context.C1.getCanonicalType(T1);
475 T2 = Context.C2.getCanonicalType(T2);
476 }
477
478 if (T1.getQualifiers() != T2.getQualifiers())
479 return false;
480
481 Type::TypeClass TC = T1->getTypeClass();
482
483 if (T1->getTypeClass() != T2->getTypeClass()) {
484 // Compare function types with prototypes vs. without prototypes as if
485 // both did not have prototypes.
486 if (T1->getTypeClass() == Type::FunctionProto &&
487 T2->getTypeClass() == Type::FunctionNoProto)
488 TC = Type::FunctionNoProto;
489 else if (T1->getTypeClass() == Type::FunctionNoProto &&
490 T2->getTypeClass() == Type::FunctionProto)
491 TC = Type::FunctionNoProto;
492 else
493 return false;
494 }
495
496 switch (TC) {
497 case Type::Builtin:
498 // FIXME: Deal with Char_S/Char_U.
499 if (cast<BuiltinType>(T1)->getKind() != cast<BuiltinType>(T2)->getKind())
500 return false;
501 break;
502
503 case Type::Complex:
504 if (!IsStructurallyEquivalent(Context,
505 cast<ComplexType>(T1)->getElementType(),
506 cast<ComplexType>(T2)->getElementType()))
507 return false;
508 break;
509
510 case Type::Adjusted:
511 case Type::Decayed:
512 if (!IsStructurallyEquivalent(Context,
513 cast<AdjustedType>(T1)->getOriginalType(),
514 cast<AdjustedType>(T2)->getOriginalType()))
515 return false;
516 break;
517
518 case Type::Pointer:
519 if (!IsStructurallyEquivalent(Context,
520 cast<PointerType>(T1)->getPointeeType(),
521 cast<PointerType>(T2)->getPointeeType()))
522 return false;
523 break;
524
525 case Type::BlockPointer:
526 if (!IsStructurallyEquivalent(Context,
527 cast<BlockPointerType>(T1)->getPointeeType(),
528 cast<BlockPointerType>(T2)->getPointeeType()))
529 return false;
530 break;
531
532 case Type::LValueReference:
533 case Type::RValueReference: {
534 const ReferenceType *Ref1 = cast<ReferenceType>(T1);
535 const ReferenceType *Ref2 = cast<ReferenceType>(T2);
536 if (Ref1->isSpelledAsLValue() != Ref2->isSpelledAsLValue())
537 return false;
538 if (Ref1->isInnerRef() != Ref2->isInnerRef())
539 return false;
540 if (!IsStructurallyEquivalent(Context,
541 Ref1->getPointeeTypeAsWritten(),
542 Ref2->getPointeeTypeAsWritten()))
543 return false;
544 break;
545 }
546
547 case Type::MemberPointer: {
548 const MemberPointerType *MemPtr1 = cast<MemberPointerType>(T1);
549 const MemberPointerType *MemPtr2 = cast<MemberPointerType>(T2);
550 if (!IsStructurallyEquivalent(Context,
551 MemPtr1->getPointeeType(),
552 MemPtr2->getPointeeType()))
553 return false;
554 if (!IsStructurallyEquivalent(Context,
555 QualType(MemPtr1->getClass(), 0),
556 QualType(MemPtr2->getClass(), 0)))
557 return false;
558 break;
559 }
560
561 case Type::ConstantArray: {
562 const ConstantArrayType *Array1 = cast<ConstantArrayType>(T1);
563 const ConstantArrayType *Array2 = cast<ConstantArrayType>(T2);
564 if (!llvm::APInt::isSameValue(Array1->getSize(), Array2->getSize()))
565 return false;
566
567 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
568 return false;
569 break;
570 }
571
572 case Type::IncompleteArray:
573 if (!IsArrayStructurallyEquivalent(Context,
574 cast<ArrayType>(T1),
575 cast<ArrayType>(T2)))
576 return false;
577 break;
578
579 case Type::VariableArray: {
580 const VariableArrayType *Array1 = cast<VariableArrayType>(T1);
581 const VariableArrayType *Array2 = cast<VariableArrayType>(T2);
582 if (!IsStructurallyEquivalent(Context,
583 Array1->getSizeExpr(), Array2->getSizeExpr()))
584 return false;
585
586 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
587 return false;
588
589 break;
590 }
591
592 case Type::DependentSizedArray: {
593 const DependentSizedArrayType *Array1 = cast<DependentSizedArrayType>(T1);
594 const DependentSizedArrayType *Array2 = cast<DependentSizedArrayType>(T2);
595 if (!IsStructurallyEquivalent(Context,
596 Array1->getSizeExpr(), Array2->getSizeExpr()))
597 return false;
598
599 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2))
600 return false;
601
602 break;
603 }
604
605 case Type::DependentSizedExtVector: {
606 const DependentSizedExtVectorType *Vec1
607 = cast<DependentSizedExtVectorType>(T1);
608 const DependentSizedExtVectorType *Vec2
609 = cast<DependentSizedExtVectorType>(T2);
610 if (!IsStructurallyEquivalent(Context,
611 Vec1->getSizeExpr(), Vec2->getSizeExpr()))
612 return false;
613 if (!IsStructurallyEquivalent(Context,
614 Vec1->getElementType(),
615 Vec2->getElementType()))
616 return false;
617 break;
618 }
619
620 case Type::Vector:
621 case Type::ExtVector: {
622 const VectorType *Vec1 = cast<VectorType>(T1);
623 const VectorType *Vec2 = cast<VectorType>(T2);
624 if (!IsStructurallyEquivalent(Context,
625 Vec1->getElementType(),
626 Vec2->getElementType()))
627 return false;
628 if (Vec1->getNumElements() != Vec2->getNumElements())
629 return false;
630 if (Vec1->getVectorKind() != Vec2->getVectorKind())
631 return false;
632 break;
633 }
634
635 case Type::FunctionProto: {
636 const FunctionProtoType *Proto1 = cast<FunctionProtoType>(T1);
637 const FunctionProtoType *Proto2 = cast<FunctionProtoType>(T2);
638 if (Proto1->getNumParams() != Proto2->getNumParams())
639 return false;
640 for (unsigned I = 0, N = Proto1->getNumParams(); I != N; ++I) {
641 if (!IsStructurallyEquivalent(Context, Proto1->getParamType(I),
642 Proto2->getParamType(I)))
643 return false;
644 }
645 if (Proto1->isVariadic() != Proto2->isVariadic())
646 return false;
647 if (Proto1->getExceptionSpecType() != Proto2->getExceptionSpecType())
648 return false;
649 if (Proto1->getExceptionSpecType() == EST_Dynamic) {
650 if (Proto1->getNumExceptions() != Proto2->getNumExceptions())
651 return false;
652 for (unsigned I = 0, N = Proto1->getNumExceptions(); I != N; ++I) {
653 if (!IsStructurallyEquivalent(Context,
654 Proto1->getExceptionType(I),
655 Proto2->getExceptionType(I)))
656 return false;
657 }
658 } else if (Proto1->getExceptionSpecType() == EST_ComputedNoexcept) {
659 if (!IsStructurallyEquivalent(Context,
660 Proto1->getNoexceptExpr(),
661 Proto2->getNoexceptExpr()))
662 return false;
663 }
664 if (Proto1->getTypeQuals() != Proto2->getTypeQuals())
665 return false;
666
667 // Fall through to check the bits common with FunctionNoProtoType.
668 }
669
670 case Type::FunctionNoProto: {
671 const FunctionType *Function1 = cast<FunctionType>(T1);
672 const FunctionType *Function2 = cast<FunctionType>(T2);
673 if (!IsStructurallyEquivalent(Context, Function1->getReturnType(),
674 Function2->getReturnType()))
675 return false;
676 if (Function1->getExtInfo() != Function2->getExtInfo())
677 return false;
678 break;
679 }
680
681 case Type::UnresolvedUsing:
682 if (!IsStructurallyEquivalent(Context,
683 cast<UnresolvedUsingType>(T1)->getDecl(),
684 cast<UnresolvedUsingType>(T2)->getDecl()))
685 return false;
686
687 break;
688
689 case Type::Attributed:
690 if (!IsStructurallyEquivalent(Context,
691 cast<AttributedType>(T1)->getModifiedType(),
692 cast<AttributedType>(T2)->getModifiedType()))
693 return false;
694 if (!IsStructurallyEquivalent(Context,
695 cast<AttributedType>(T1)->getEquivalentType(),
696 cast<AttributedType>(T2)->getEquivalentType()))
697 return false;
698 break;
699
700 case Type::Paren:
701 if (!IsStructurallyEquivalent(Context,
702 cast<ParenType>(T1)->getInnerType(),
703 cast<ParenType>(T2)->getInnerType()))
704 return false;
705 break;
706
707 case Type::Typedef:
708 if (!IsStructurallyEquivalent(Context,
709 cast<TypedefType>(T1)->getDecl(),
710 cast<TypedefType>(T2)->getDecl()))
711 return false;
712 break;
713
714 case Type::TypeOfExpr:
715 if (!IsStructurallyEquivalent(Context,
716 cast<TypeOfExprType>(T1)->getUnderlyingExpr(),
717 cast<TypeOfExprType>(T2)->getUnderlyingExpr()))
718 return false;
719 break;
720
721 case Type::TypeOf:
722 if (!IsStructurallyEquivalent(Context,
723 cast<TypeOfType>(T1)->getUnderlyingType(),
724 cast<TypeOfType>(T2)->getUnderlyingType()))
725 return false;
726 break;
727
728 case Type::UnaryTransform:
729 if (!IsStructurallyEquivalent(Context,
730 cast<UnaryTransformType>(T1)->getUnderlyingType(),
731 cast<UnaryTransformType>(T1)->getUnderlyingType()))
732 return false;
733 break;
734
735 case Type::Decltype:
736 if (!IsStructurallyEquivalent(Context,
737 cast<DecltypeType>(T1)->getUnderlyingExpr(),
738 cast<DecltypeType>(T2)->getUnderlyingExpr()))
739 return false;
740 break;
741
742 case Type::Auto:
743 if (!IsStructurallyEquivalent(Context,
744 cast<AutoType>(T1)->getDeducedType(),
745 cast<AutoType>(T2)->getDeducedType()))
746 return false;
747 break;
748
749 case Type::Record:
750 case Type::Enum:
751 if (!IsStructurallyEquivalent(Context,
752 cast<TagType>(T1)->getDecl(),
753 cast<TagType>(T2)->getDecl()))
754 return false;
755 break;
756
757 case Type::TemplateTypeParm: {
758 const TemplateTypeParmType *Parm1 = cast<TemplateTypeParmType>(T1);
759 const TemplateTypeParmType *Parm2 = cast<TemplateTypeParmType>(T2);
760 if (Parm1->getDepth() != Parm2->getDepth())
761 return false;
762 if (Parm1->getIndex() != Parm2->getIndex())
763 return false;
764 if (Parm1->isParameterPack() != Parm2->isParameterPack())
765 return false;
766
767 // Names of template type parameters are never significant.
768 break;
769 }
770
771 case Type::SubstTemplateTypeParm: {
772 const SubstTemplateTypeParmType *Subst1
773 = cast<SubstTemplateTypeParmType>(T1);
774 const SubstTemplateTypeParmType *Subst2
775 = cast<SubstTemplateTypeParmType>(T2);
776 if (!IsStructurallyEquivalent(Context,
777 QualType(Subst1->getReplacedParameter(), 0),
778 QualType(Subst2->getReplacedParameter(), 0)))
779 return false;
780 if (!IsStructurallyEquivalent(Context,
781 Subst1->getReplacementType(),
782 Subst2->getReplacementType()))
783 return false;
784 break;
785 }
786
787 case Type::SubstTemplateTypeParmPack: {
788 const SubstTemplateTypeParmPackType *Subst1
789 = cast<SubstTemplateTypeParmPackType>(T1);
790 const SubstTemplateTypeParmPackType *Subst2
791 = cast<SubstTemplateTypeParmPackType>(T2);
792 if (!IsStructurallyEquivalent(Context,
793 QualType(Subst1->getReplacedParameter(), 0),
794 QualType(Subst2->getReplacedParameter(), 0)))
795 return false;
796 if (!IsStructurallyEquivalent(Context,
797 Subst1->getArgumentPack(),
798 Subst2->getArgumentPack()))
799 return false;
800 break;
801 }
802 case Type::TemplateSpecialization: {
803 const TemplateSpecializationType *Spec1
804 = cast<TemplateSpecializationType>(T1);
805 const TemplateSpecializationType *Spec2
806 = cast<TemplateSpecializationType>(T2);
807 if (!IsStructurallyEquivalent(Context,
808 Spec1->getTemplateName(),
809 Spec2->getTemplateName()))
810 return false;
811 if (Spec1->getNumArgs() != Spec2->getNumArgs())
812 return false;
813 for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) {
814 if (!IsStructurallyEquivalent(Context,
815 Spec1->getArg(I), Spec2->getArg(I)))
816 return false;
817 }
818 break;
819 }
820
821 case Type::Elaborated: {
822 const ElaboratedType *Elab1 = cast<ElaboratedType>(T1);
823 const ElaboratedType *Elab2 = cast<ElaboratedType>(T2);
824 // CHECKME: what if a keyword is ETK_None or ETK_typename ?
825 if (Elab1->getKeyword() != Elab2->getKeyword())
826 return false;
827 if (!IsStructurallyEquivalent(Context,
828 Elab1->getQualifier(),
829 Elab2->getQualifier()))
830 return false;
831 if (!IsStructurallyEquivalent(Context,
832 Elab1->getNamedType(),
833 Elab2->getNamedType()))
834 return false;
835 break;
836 }
837
838 case Type::InjectedClassName: {
839 const InjectedClassNameType *Inj1 = cast<InjectedClassNameType>(T1);
840 const InjectedClassNameType *Inj2 = cast<InjectedClassNameType>(T2);
841 if (!IsStructurallyEquivalent(Context,
842 Inj1->getInjectedSpecializationType(),
843 Inj2->getInjectedSpecializationType()))
844 return false;
845 break;
846 }
847
848 case Type::DependentName: {
849 const DependentNameType *Typename1 = cast<DependentNameType>(T1);
850 const DependentNameType *Typename2 = cast<DependentNameType>(T2);
851 if (!IsStructurallyEquivalent(Context,
852 Typename1->getQualifier(),
853 Typename2->getQualifier()))
854 return false;
855 if (!IsStructurallyEquivalent(Typename1->getIdentifier(),
856 Typename2->getIdentifier()))
857 return false;
858
859 break;
860 }
861
862 case Type::DependentTemplateSpecialization: {
863 const DependentTemplateSpecializationType *Spec1 =
864 cast<DependentTemplateSpecializationType>(T1);
865 const DependentTemplateSpecializationType *Spec2 =
866 cast<DependentTemplateSpecializationType>(T2);
867 if (!IsStructurallyEquivalent(Context,
868 Spec1->getQualifier(),
869 Spec2->getQualifier()))
870 return false;
871 if (!IsStructurallyEquivalent(Spec1->getIdentifier(),
872 Spec2->getIdentifier()))
873 return false;
874 if (Spec1->getNumArgs() != Spec2->getNumArgs())
875 return false;
876 for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) {
877 if (!IsStructurallyEquivalent(Context,
878 Spec1->getArg(I), Spec2->getArg(I)))
879 return false;
880 }
881 break;
882 }
883
884 case Type::PackExpansion:
885 if (!IsStructurallyEquivalent(Context,
886 cast<PackExpansionType>(T1)->getPattern(),
887 cast<PackExpansionType>(T2)->getPattern()))
888 return false;
889 break;
890
891 case Type::ObjCInterface: {
892 const ObjCInterfaceType *Iface1 = cast<ObjCInterfaceType>(T1);
893 const ObjCInterfaceType *Iface2 = cast<ObjCInterfaceType>(T2);
894 if (!IsStructurallyEquivalent(Context,
895 Iface1->getDecl(), Iface2->getDecl()))
896 return false;
897 break;
898 }
899
900 case Type::ObjCObject: {
901 const ObjCObjectType *Obj1 = cast<ObjCObjectType>(T1);
902 const ObjCObjectType *Obj2 = cast<ObjCObjectType>(T2);
903 if (!IsStructurallyEquivalent(Context,
904 Obj1->getBaseType(),
905 Obj2->getBaseType()))
906 return false;
907 if (Obj1->getNumProtocols() != Obj2->getNumProtocols())
908 return false;
909 for (unsigned I = 0, N = Obj1->getNumProtocols(); I != N; ++I) {
910 if (!IsStructurallyEquivalent(Context,
911 Obj1->getProtocol(I),
912 Obj2->getProtocol(I)))
913 return false;
914 }
915 break;
916 }
917
918 case Type::ObjCObjectPointer: {
919 const ObjCObjectPointerType *Ptr1 = cast<ObjCObjectPointerType>(T1);
920 const ObjCObjectPointerType *Ptr2 = cast<ObjCObjectPointerType>(T2);
921 if (!IsStructurallyEquivalent(Context,
922 Ptr1->getPointeeType(),
923 Ptr2->getPointeeType()))
924 return false;
925 break;
926 }
927
928 case Type::Atomic: {
929 if (!IsStructurallyEquivalent(Context,
930 cast<AtomicType>(T1)->getValueType(),
931 cast<AtomicType>(T2)->getValueType()))
932 return false;
933 break;
934 }
935
936 case Type::Pipe: {
937 if (!IsStructurallyEquivalent(Context,
938 cast<PipeType>(T1)->getElementType(),
939 cast<PipeType>(T2)->getElementType()))
940 return false;
941 break;
942 }
943
944 } // end switch
945
946 return true;
947 }
948
949 /// \brief Determine structural equivalence of two fields.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,FieldDecl * Field1,FieldDecl * Field2)950 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
951 FieldDecl *Field1, FieldDecl *Field2) {
952 RecordDecl *Owner2 = cast<RecordDecl>(Field2->getDeclContext());
953
954 // For anonymous structs/unions, match up the anonymous struct/union type
955 // declarations directly, so that we don't go off searching for anonymous
956 // types
957 if (Field1->isAnonymousStructOrUnion() &&
958 Field2->isAnonymousStructOrUnion()) {
959 RecordDecl *D1 = Field1->getType()->castAs<RecordType>()->getDecl();
960 RecordDecl *D2 = Field2->getType()->castAs<RecordType>()->getDecl();
961 return IsStructurallyEquivalent(Context, D1, D2);
962 }
963
964 // Check for equivalent field names.
965 IdentifierInfo *Name1 = Field1->getIdentifier();
966 IdentifierInfo *Name2 = Field2->getIdentifier();
967 if (!::IsStructurallyEquivalent(Name1, Name2))
968 return false;
969
970 if (!IsStructurallyEquivalent(Context,
971 Field1->getType(), Field2->getType())) {
972 if (Context.Complain) {
973 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent)
974 << Context.C2.getTypeDeclType(Owner2);
975 Context.Diag2(Field2->getLocation(), diag::note_odr_field)
976 << Field2->getDeclName() << Field2->getType();
977 Context.Diag1(Field1->getLocation(), diag::note_odr_field)
978 << Field1->getDeclName() << Field1->getType();
979 }
980 return false;
981 }
982
983 if (Field1->isBitField() != Field2->isBitField()) {
984 if (Context.Complain) {
985 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent)
986 << Context.C2.getTypeDeclType(Owner2);
987 if (Field1->isBitField()) {
988 Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field)
989 << Field1->getDeclName() << Field1->getType()
990 << Field1->getBitWidthValue(Context.C1);
991 Context.Diag2(Field2->getLocation(), diag::note_odr_not_bit_field)
992 << Field2->getDeclName();
993 } else {
994 Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field)
995 << Field2->getDeclName() << Field2->getType()
996 << Field2->getBitWidthValue(Context.C2);
997 Context.Diag1(Field1->getLocation(), diag::note_odr_not_bit_field)
998 << Field1->getDeclName();
999 }
1000 }
1001 return false;
1002 }
1003
1004 if (Field1->isBitField()) {
1005 // Make sure that the bit-fields are the same length.
1006 unsigned Bits1 = Field1->getBitWidthValue(Context.C1);
1007 unsigned Bits2 = Field2->getBitWidthValue(Context.C2);
1008
1009 if (Bits1 != Bits2) {
1010 if (Context.Complain) {
1011 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1012 << Context.C2.getTypeDeclType(Owner2);
1013 Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field)
1014 << Field2->getDeclName() << Field2->getType() << Bits2;
1015 Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field)
1016 << Field1->getDeclName() << Field1->getType() << Bits1;
1017 }
1018 return false;
1019 }
1020 }
1021
1022 return true;
1023 }
1024
1025 /// \brief Find the index of the given anonymous struct/union within its
1026 /// context.
1027 ///
1028 /// \returns Returns the index of this anonymous struct/union in its context,
1029 /// including the next assigned index (if none of them match). Returns an
1030 /// empty option if the context is not a record, i.e.. if the anonymous
1031 /// struct/union is at namespace or block scope.
findUntaggedStructOrUnionIndex(RecordDecl * Anon)1032 static Optional<unsigned> findUntaggedStructOrUnionIndex(RecordDecl *Anon) {
1033 ASTContext &Context = Anon->getASTContext();
1034 QualType AnonTy = Context.getRecordType(Anon);
1035
1036 RecordDecl *Owner = dyn_cast<RecordDecl>(Anon->getDeclContext());
1037 if (!Owner)
1038 return None;
1039
1040 unsigned Index = 0;
1041 for (const auto *D : Owner->noload_decls()) {
1042 const auto *F = dyn_cast<FieldDecl>(D);
1043 if (!F)
1044 continue;
1045
1046 if (F->isAnonymousStructOrUnion()) {
1047 if (Context.hasSameType(F->getType(), AnonTy))
1048 break;
1049 ++Index;
1050 continue;
1051 }
1052
1053 // If the field looks like this:
1054 // struct { ... } A;
1055 QualType FieldType = F->getType();
1056 if (const auto *RecType = dyn_cast<RecordType>(FieldType)) {
1057 const RecordDecl *RecDecl = RecType->getDecl();
1058 if (RecDecl->getDeclContext() == Owner &&
1059 !RecDecl->getIdentifier()) {
1060 if (Context.hasSameType(FieldType, AnonTy))
1061 break;
1062 ++Index;
1063 continue;
1064 }
1065 }
1066 }
1067
1068 return Index;
1069 }
1070
1071 /// \brief Determine structural equivalence of two records.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,RecordDecl * D1,RecordDecl * D2)1072 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1073 RecordDecl *D1, RecordDecl *D2) {
1074 if (D1->isUnion() != D2->isUnion()) {
1075 if (Context.Complain) {
1076 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1077 << Context.C2.getTypeDeclType(D2);
1078 Context.Diag1(D1->getLocation(), diag::note_odr_tag_kind_here)
1079 << D1->getDeclName() << (unsigned)D1->getTagKind();
1080 }
1081 return false;
1082 }
1083
1084 if (D1->isAnonymousStructOrUnion() && D2->isAnonymousStructOrUnion()) {
1085 // If both anonymous structs/unions are in a record context, make sure
1086 // they occur in the same location in the context records.
1087 if (Optional<unsigned> Index1 = findUntaggedStructOrUnionIndex(D1)) {
1088 if (Optional<unsigned> Index2 = findUntaggedStructOrUnionIndex(D2)) {
1089 if (*Index1 != *Index2)
1090 return false;
1091 }
1092 }
1093 }
1094
1095 // If both declarations are class template specializations, we know
1096 // the ODR applies, so check the template and template arguments.
1097 ClassTemplateSpecializationDecl *Spec1
1098 = dyn_cast<ClassTemplateSpecializationDecl>(D1);
1099 ClassTemplateSpecializationDecl *Spec2
1100 = dyn_cast<ClassTemplateSpecializationDecl>(D2);
1101 if (Spec1 && Spec2) {
1102 // Check that the specialized templates are the same.
1103 if (!IsStructurallyEquivalent(Context, Spec1->getSpecializedTemplate(),
1104 Spec2->getSpecializedTemplate()))
1105 return false;
1106
1107 // Check that the template arguments are the same.
1108 if (Spec1->getTemplateArgs().size() != Spec2->getTemplateArgs().size())
1109 return false;
1110
1111 for (unsigned I = 0, N = Spec1->getTemplateArgs().size(); I != N; ++I)
1112 if (!IsStructurallyEquivalent(Context,
1113 Spec1->getTemplateArgs().get(I),
1114 Spec2->getTemplateArgs().get(I)))
1115 return false;
1116 }
1117 // If one is a class template specialization and the other is not, these
1118 // structures are different.
1119 else if (Spec1 || Spec2)
1120 return false;
1121
1122 // Compare the definitions of these two records. If either or both are
1123 // incomplete, we assume that they are equivalent.
1124 D1 = D1->getDefinition();
1125 D2 = D2->getDefinition();
1126 if (!D1 || !D2)
1127 return true;
1128
1129 if (CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(D1)) {
1130 if (CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(D2)) {
1131 if (D1CXX->getNumBases() != D2CXX->getNumBases()) {
1132 if (Context.Complain) {
1133 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1134 << Context.C2.getTypeDeclType(D2);
1135 Context.Diag2(D2->getLocation(), diag::note_odr_number_of_bases)
1136 << D2CXX->getNumBases();
1137 Context.Diag1(D1->getLocation(), diag::note_odr_number_of_bases)
1138 << D1CXX->getNumBases();
1139 }
1140 return false;
1141 }
1142
1143 // Check the base classes.
1144 for (CXXRecordDecl::base_class_iterator Base1 = D1CXX->bases_begin(),
1145 BaseEnd1 = D1CXX->bases_end(),
1146 Base2 = D2CXX->bases_begin();
1147 Base1 != BaseEnd1;
1148 ++Base1, ++Base2) {
1149 if (!IsStructurallyEquivalent(Context,
1150 Base1->getType(), Base2->getType())) {
1151 if (Context.Complain) {
1152 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1153 << Context.C2.getTypeDeclType(D2);
1154 Context.Diag2(Base2->getLocStart(), diag::note_odr_base)
1155 << Base2->getType()
1156 << Base2->getSourceRange();
1157 Context.Diag1(Base1->getLocStart(), diag::note_odr_base)
1158 << Base1->getType()
1159 << Base1->getSourceRange();
1160 }
1161 return false;
1162 }
1163
1164 // Check virtual vs. non-virtual inheritance mismatch.
1165 if (Base1->isVirtual() != Base2->isVirtual()) {
1166 if (Context.Complain) {
1167 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1168 << Context.C2.getTypeDeclType(D2);
1169 Context.Diag2(Base2->getLocStart(),
1170 diag::note_odr_virtual_base)
1171 << Base2->isVirtual() << Base2->getSourceRange();
1172 Context.Diag1(Base1->getLocStart(), diag::note_odr_base)
1173 << Base1->isVirtual()
1174 << Base1->getSourceRange();
1175 }
1176 return false;
1177 }
1178 }
1179 } else if (D1CXX->getNumBases() > 0) {
1180 if (Context.Complain) {
1181 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1182 << Context.C2.getTypeDeclType(D2);
1183 const CXXBaseSpecifier *Base1 = D1CXX->bases_begin();
1184 Context.Diag1(Base1->getLocStart(), diag::note_odr_base)
1185 << Base1->getType()
1186 << Base1->getSourceRange();
1187 Context.Diag2(D2->getLocation(), diag::note_odr_missing_base);
1188 }
1189 return false;
1190 }
1191 }
1192
1193 // Check the fields for consistency.
1194 RecordDecl::field_iterator Field2 = D2->field_begin(),
1195 Field2End = D2->field_end();
1196 for (RecordDecl::field_iterator Field1 = D1->field_begin(),
1197 Field1End = D1->field_end();
1198 Field1 != Field1End;
1199 ++Field1, ++Field2) {
1200 if (Field2 == Field2End) {
1201 if (Context.Complain) {
1202 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1203 << Context.C2.getTypeDeclType(D2);
1204 Context.Diag1(Field1->getLocation(), diag::note_odr_field)
1205 << Field1->getDeclName() << Field1->getType();
1206 Context.Diag2(D2->getLocation(), diag::note_odr_missing_field);
1207 }
1208 return false;
1209 }
1210
1211 if (!IsStructurallyEquivalent(Context, *Field1, *Field2))
1212 return false;
1213 }
1214
1215 if (Field2 != Field2End) {
1216 if (Context.Complain) {
1217 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1218 << Context.C2.getTypeDeclType(D2);
1219 Context.Diag2(Field2->getLocation(), diag::note_odr_field)
1220 << Field2->getDeclName() << Field2->getType();
1221 Context.Diag1(D1->getLocation(), diag::note_odr_missing_field);
1222 }
1223 return false;
1224 }
1225
1226 return true;
1227 }
1228
1229 /// \brief Determine structural equivalence of two enums.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,EnumDecl * D1,EnumDecl * D2)1230 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1231 EnumDecl *D1, EnumDecl *D2) {
1232 EnumDecl::enumerator_iterator EC2 = D2->enumerator_begin(),
1233 EC2End = D2->enumerator_end();
1234 for (EnumDecl::enumerator_iterator EC1 = D1->enumerator_begin(),
1235 EC1End = D1->enumerator_end();
1236 EC1 != EC1End; ++EC1, ++EC2) {
1237 if (EC2 == EC2End) {
1238 if (Context.Complain) {
1239 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1240 << Context.C2.getTypeDeclType(D2);
1241 Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator)
1242 << EC1->getDeclName()
1243 << EC1->getInitVal().toString(10);
1244 Context.Diag2(D2->getLocation(), diag::note_odr_missing_enumerator);
1245 }
1246 return false;
1247 }
1248
1249 llvm::APSInt Val1 = EC1->getInitVal();
1250 llvm::APSInt Val2 = EC2->getInitVal();
1251 if (!llvm::APSInt::isSameValue(Val1, Val2) ||
1252 !IsStructurallyEquivalent(EC1->getIdentifier(), EC2->getIdentifier())) {
1253 if (Context.Complain) {
1254 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1255 << Context.C2.getTypeDeclType(D2);
1256 Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator)
1257 << EC2->getDeclName()
1258 << EC2->getInitVal().toString(10);
1259 Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator)
1260 << EC1->getDeclName()
1261 << EC1->getInitVal().toString(10);
1262 }
1263 return false;
1264 }
1265 }
1266
1267 if (EC2 != EC2End) {
1268 if (Context.Complain) {
1269 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent)
1270 << Context.C2.getTypeDeclType(D2);
1271 Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator)
1272 << EC2->getDeclName()
1273 << EC2->getInitVal().toString(10);
1274 Context.Diag1(D1->getLocation(), diag::note_odr_missing_enumerator);
1275 }
1276 return false;
1277 }
1278
1279 return true;
1280 }
1281
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,TemplateParameterList * Params1,TemplateParameterList * Params2)1282 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1283 TemplateParameterList *Params1,
1284 TemplateParameterList *Params2) {
1285 if (Params1->size() != Params2->size()) {
1286 if (Context.Complain) {
1287 Context.Diag2(Params2->getTemplateLoc(),
1288 diag::err_odr_different_num_template_parameters)
1289 << Params1->size() << Params2->size();
1290 Context.Diag1(Params1->getTemplateLoc(),
1291 diag::note_odr_template_parameter_list);
1292 }
1293 return false;
1294 }
1295
1296 for (unsigned I = 0, N = Params1->size(); I != N; ++I) {
1297 if (Params1->getParam(I)->getKind() != Params2->getParam(I)->getKind()) {
1298 if (Context.Complain) {
1299 Context.Diag2(Params2->getParam(I)->getLocation(),
1300 diag::err_odr_different_template_parameter_kind);
1301 Context.Diag1(Params1->getParam(I)->getLocation(),
1302 diag::note_odr_template_parameter_here);
1303 }
1304 return false;
1305 }
1306
1307 if (!Context.IsStructurallyEquivalent(Params1->getParam(I),
1308 Params2->getParam(I))) {
1309
1310 return false;
1311 }
1312 }
1313
1314 return true;
1315 }
1316
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,TemplateTypeParmDecl * D1,TemplateTypeParmDecl * D2)1317 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1318 TemplateTypeParmDecl *D1,
1319 TemplateTypeParmDecl *D2) {
1320 if (D1->isParameterPack() != D2->isParameterPack()) {
1321 if (Context.Complain) {
1322 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
1323 << D2->isParameterPack();
1324 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
1325 << D1->isParameterPack();
1326 }
1327 return false;
1328 }
1329
1330 return true;
1331 }
1332
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,NonTypeTemplateParmDecl * D1,NonTypeTemplateParmDecl * D2)1333 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1334 NonTypeTemplateParmDecl *D1,
1335 NonTypeTemplateParmDecl *D2) {
1336 if (D1->isParameterPack() != D2->isParameterPack()) {
1337 if (Context.Complain) {
1338 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
1339 << D2->isParameterPack();
1340 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
1341 << D1->isParameterPack();
1342 }
1343 return false;
1344 }
1345
1346 // Check types.
1347 if (!Context.IsStructurallyEquivalent(D1->getType(), D2->getType())) {
1348 if (Context.Complain) {
1349 Context.Diag2(D2->getLocation(),
1350 diag::err_odr_non_type_parameter_type_inconsistent)
1351 << D2->getType() << D1->getType();
1352 Context.Diag1(D1->getLocation(), diag::note_odr_value_here)
1353 << D1->getType();
1354 }
1355 return false;
1356 }
1357
1358 return true;
1359 }
1360
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,TemplateTemplateParmDecl * D1,TemplateTemplateParmDecl * D2)1361 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1362 TemplateTemplateParmDecl *D1,
1363 TemplateTemplateParmDecl *D2) {
1364 if (D1->isParameterPack() != D2->isParameterPack()) {
1365 if (Context.Complain) {
1366 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack)
1367 << D2->isParameterPack();
1368 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack)
1369 << D1->isParameterPack();
1370 }
1371 return false;
1372 }
1373
1374 // Check template parameter lists.
1375 return IsStructurallyEquivalent(Context, D1->getTemplateParameters(),
1376 D2->getTemplateParameters());
1377 }
1378
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,ClassTemplateDecl * D1,ClassTemplateDecl * D2)1379 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1380 ClassTemplateDecl *D1,
1381 ClassTemplateDecl *D2) {
1382 // Check template parameters.
1383 if (!IsStructurallyEquivalent(Context,
1384 D1->getTemplateParameters(),
1385 D2->getTemplateParameters()))
1386 return false;
1387
1388 // Check the templated declaration.
1389 return Context.IsStructurallyEquivalent(D1->getTemplatedDecl(),
1390 D2->getTemplatedDecl());
1391 }
1392
1393 /// \brief Determine structural equivalence of two declarations.
IsStructurallyEquivalent(StructuralEquivalenceContext & Context,Decl * D1,Decl * D2)1394 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
1395 Decl *D1, Decl *D2) {
1396 // FIXME: Check for known structural equivalences via a callback of some sort.
1397
1398 // Check whether we already know that these two declarations are not
1399 // structurally equivalent.
1400 if (Context.NonEquivalentDecls.count(std::make_pair(D1->getCanonicalDecl(),
1401 D2->getCanonicalDecl())))
1402 return false;
1403
1404 // Determine whether we've already produced a tentative equivalence for D1.
1405 Decl *&EquivToD1 = Context.TentativeEquivalences[D1->getCanonicalDecl()];
1406 if (EquivToD1)
1407 return EquivToD1 == D2->getCanonicalDecl();
1408
1409 // Produce a tentative equivalence D1 <-> D2, which will be checked later.
1410 EquivToD1 = D2->getCanonicalDecl();
1411 Context.DeclsToCheck.push_back(D1->getCanonicalDecl());
1412 return true;
1413 }
1414
IsStructurallyEquivalent(Decl * D1,Decl * D2)1415 bool StructuralEquivalenceContext::IsStructurallyEquivalent(Decl *D1,
1416 Decl *D2) {
1417 if (!::IsStructurallyEquivalent(*this, D1, D2))
1418 return false;
1419
1420 return !Finish();
1421 }
1422
IsStructurallyEquivalent(QualType T1,QualType T2)1423 bool StructuralEquivalenceContext::IsStructurallyEquivalent(QualType T1,
1424 QualType T2) {
1425 if (!::IsStructurallyEquivalent(*this, T1, T2))
1426 return false;
1427
1428 return !Finish();
1429 }
1430
Finish()1431 bool StructuralEquivalenceContext::Finish() {
1432 while (!DeclsToCheck.empty()) {
1433 // Check the next declaration.
1434 Decl *D1 = DeclsToCheck.front();
1435 DeclsToCheck.pop_front();
1436
1437 Decl *D2 = TentativeEquivalences[D1];
1438 assert(D2 && "Unrecorded tentative equivalence?");
1439
1440 bool Equivalent = true;
1441
1442 // FIXME: Switch on all declaration kinds. For now, we're just going to
1443 // check the obvious ones.
1444 if (RecordDecl *Record1 = dyn_cast<RecordDecl>(D1)) {
1445 if (RecordDecl *Record2 = dyn_cast<RecordDecl>(D2)) {
1446 // Check for equivalent structure names.
1447 IdentifierInfo *Name1 = Record1->getIdentifier();
1448 if (!Name1 && Record1->getTypedefNameForAnonDecl())
1449 Name1 = Record1->getTypedefNameForAnonDecl()->getIdentifier();
1450 IdentifierInfo *Name2 = Record2->getIdentifier();
1451 if (!Name2 && Record2->getTypedefNameForAnonDecl())
1452 Name2 = Record2->getTypedefNameForAnonDecl()->getIdentifier();
1453 if (!::IsStructurallyEquivalent(Name1, Name2) ||
1454 !::IsStructurallyEquivalent(*this, Record1, Record2))
1455 Equivalent = false;
1456 } else {
1457 // Record/non-record mismatch.
1458 Equivalent = false;
1459 }
1460 } else if (EnumDecl *Enum1 = dyn_cast<EnumDecl>(D1)) {
1461 if (EnumDecl *Enum2 = dyn_cast<EnumDecl>(D2)) {
1462 // Check for equivalent enum names.
1463 IdentifierInfo *Name1 = Enum1->getIdentifier();
1464 if (!Name1 && Enum1->getTypedefNameForAnonDecl())
1465 Name1 = Enum1->getTypedefNameForAnonDecl()->getIdentifier();
1466 IdentifierInfo *Name2 = Enum2->getIdentifier();
1467 if (!Name2 && Enum2->getTypedefNameForAnonDecl())
1468 Name2 = Enum2->getTypedefNameForAnonDecl()->getIdentifier();
1469 if (!::IsStructurallyEquivalent(Name1, Name2) ||
1470 !::IsStructurallyEquivalent(*this, Enum1, Enum2))
1471 Equivalent = false;
1472 } else {
1473 // Enum/non-enum mismatch
1474 Equivalent = false;
1475 }
1476 } else if (TypedefNameDecl *Typedef1 = dyn_cast<TypedefNameDecl>(D1)) {
1477 if (TypedefNameDecl *Typedef2 = dyn_cast<TypedefNameDecl>(D2)) {
1478 if (!::IsStructurallyEquivalent(Typedef1->getIdentifier(),
1479 Typedef2->getIdentifier()) ||
1480 !::IsStructurallyEquivalent(*this,
1481 Typedef1->getUnderlyingType(),
1482 Typedef2->getUnderlyingType()))
1483 Equivalent = false;
1484 } else {
1485 // Typedef/non-typedef mismatch.
1486 Equivalent = false;
1487 }
1488 } else if (ClassTemplateDecl *ClassTemplate1
1489 = dyn_cast<ClassTemplateDecl>(D1)) {
1490 if (ClassTemplateDecl *ClassTemplate2 = dyn_cast<ClassTemplateDecl>(D2)) {
1491 if (!::IsStructurallyEquivalent(ClassTemplate1->getIdentifier(),
1492 ClassTemplate2->getIdentifier()) ||
1493 !::IsStructurallyEquivalent(*this, ClassTemplate1, ClassTemplate2))
1494 Equivalent = false;
1495 } else {
1496 // Class template/non-class-template mismatch.
1497 Equivalent = false;
1498 }
1499 } else if (TemplateTypeParmDecl *TTP1= dyn_cast<TemplateTypeParmDecl>(D1)) {
1500 if (TemplateTypeParmDecl *TTP2 = dyn_cast<TemplateTypeParmDecl>(D2)) {
1501 if (!::IsStructurallyEquivalent(*this, TTP1, TTP2))
1502 Equivalent = false;
1503 } else {
1504 // Kind mismatch.
1505 Equivalent = false;
1506 }
1507 } else if (NonTypeTemplateParmDecl *NTTP1
1508 = dyn_cast<NonTypeTemplateParmDecl>(D1)) {
1509 if (NonTypeTemplateParmDecl *NTTP2
1510 = dyn_cast<NonTypeTemplateParmDecl>(D2)) {
1511 if (!::IsStructurallyEquivalent(*this, NTTP1, NTTP2))
1512 Equivalent = false;
1513 } else {
1514 // Kind mismatch.
1515 Equivalent = false;
1516 }
1517 } else if (TemplateTemplateParmDecl *TTP1
1518 = dyn_cast<TemplateTemplateParmDecl>(D1)) {
1519 if (TemplateTemplateParmDecl *TTP2
1520 = dyn_cast<TemplateTemplateParmDecl>(D2)) {
1521 if (!::IsStructurallyEquivalent(*this, TTP1, TTP2))
1522 Equivalent = false;
1523 } else {
1524 // Kind mismatch.
1525 Equivalent = false;
1526 }
1527 }
1528
1529 if (!Equivalent) {
1530 // Note that these two declarations are not equivalent (and we already
1531 // know about it).
1532 NonEquivalentDecls.insert(std::make_pair(D1->getCanonicalDecl(),
1533 D2->getCanonicalDecl()));
1534 return true;
1535 }
1536 // FIXME: Check other declaration kinds!
1537 }
1538
1539 return false;
1540 }
1541
1542 //----------------------------------------------------------------------------
1543 // Import Types
1544 //----------------------------------------------------------------------------
1545
VisitType(const Type * T)1546 QualType ASTNodeImporter::VisitType(const Type *T) {
1547 Importer.FromDiag(SourceLocation(), diag::err_unsupported_ast_node)
1548 << T->getTypeClassName();
1549 return QualType();
1550 }
1551
VisitBuiltinType(const BuiltinType * T)1552 QualType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) {
1553 switch (T->getKind()) {
1554 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
1555 case BuiltinType::Id: \
1556 return Importer.getToContext().SingletonId;
1557 #include "clang/Basic/OpenCLImageTypes.def"
1558 #define SHARED_SINGLETON_TYPE(Expansion)
1559 #define BUILTIN_TYPE(Id, SingletonId) \
1560 case BuiltinType::Id: return Importer.getToContext().SingletonId;
1561 #include "clang/AST/BuiltinTypes.def"
1562
1563 // FIXME: for Char16, Char32, and NullPtr, make sure that the "to"
1564 // context supports C++.
1565
1566 // FIXME: for ObjCId, ObjCClass, and ObjCSel, make sure that the "to"
1567 // context supports ObjC.
1568
1569 case BuiltinType::Char_U:
1570 // The context we're importing from has an unsigned 'char'. If we're
1571 // importing into a context with a signed 'char', translate to
1572 // 'unsigned char' instead.
1573 if (Importer.getToContext().getLangOpts().CharIsSigned)
1574 return Importer.getToContext().UnsignedCharTy;
1575
1576 return Importer.getToContext().CharTy;
1577
1578 case BuiltinType::Char_S:
1579 // The context we're importing from has an unsigned 'char'. If we're
1580 // importing into a context with a signed 'char', translate to
1581 // 'unsigned char' instead.
1582 if (!Importer.getToContext().getLangOpts().CharIsSigned)
1583 return Importer.getToContext().SignedCharTy;
1584
1585 return Importer.getToContext().CharTy;
1586
1587 case BuiltinType::WChar_S:
1588 case BuiltinType::WChar_U:
1589 // FIXME: If not in C++, shall we translate to the C equivalent of
1590 // wchar_t?
1591 return Importer.getToContext().WCharTy;
1592 }
1593
1594 llvm_unreachable("Invalid BuiltinType Kind!");
1595 }
1596
VisitComplexType(const ComplexType * T)1597 QualType ASTNodeImporter::VisitComplexType(const ComplexType *T) {
1598 QualType ToElementType = Importer.Import(T->getElementType());
1599 if (ToElementType.isNull())
1600 return QualType();
1601
1602 return Importer.getToContext().getComplexType(ToElementType);
1603 }
1604
VisitPointerType(const PointerType * T)1605 QualType ASTNodeImporter::VisitPointerType(const PointerType *T) {
1606 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1607 if (ToPointeeType.isNull())
1608 return QualType();
1609
1610 return Importer.getToContext().getPointerType(ToPointeeType);
1611 }
1612
VisitBlockPointerType(const BlockPointerType * T)1613 QualType ASTNodeImporter::VisitBlockPointerType(const BlockPointerType *T) {
1614 // FIXME: Check for blocks support in "to" context.
1615 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1616 if (ToPointeeType.isNull())
1617 return QualType();
1618
1619 return Importer.getToContext().getBlockPointerType(ToPointeeType);
1620 }
1621
1622 QualType
VisitLValueReferenceType(const LValueReferenceType * T)1623 ASTNodeImporter::VisitLValueReferenceType(const LValueReferenceType *T) {
1624 // FIXME: Check for C++ support in "to" context.
1625 QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten());
1626 if (ToPointeeType.isNull())
1627 return QualType();
1628
1629 return Importer.getToContext().getLValueReferenceType(ToPointeeType);
1630 }
1631
1632 QualType
VisitRValueReferenceType(const RValueReferenceType * T)1633 ASTNodeImporter::VisitRValueReferenceType(const RValueReferenceType *T) {
1634 // FIXME: Check for C++0x support in "to" context.
1635 QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten());
1636 if (ToPointeeType.isNull())
1637 return QualType();
1638
1639 return Importer.getToContext().getRValueReferenceType(ToPointeeType);
1640 }
1641
VisitMemberPointerType(const MemberPointerType * T)1642 QualType ASTNodeImporter::VisitMemberPointerType(const MemberPointerType *T) {
1643 // FIXME: Check for C++ support in "to" context.
1644 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1645 if (ToPointeeType.isNull())
1646 return QualType();
1647
1648 QualType ClassType = Importer.Import(QualType(T->getClass(), 0));
1649 return Importer.getToContext().getMemberPointerType(ToPointeeType,
1650 ClassType.getTypePtr());
1651 }
1652
VisitConstantArrayType(const ConstantArrayType * T)1653 QualType ASTNodeImporter::VisitConstantArrayType(const ConstantArrayType *T) {
1654 QualType ToElementType = Importer.Import(T->getElementType());
1655 if (ToElementType.isNull())
1656 return QualType();
1657
1658 return Importer.getToContext().getConstantArrayType(ToElementType,
1659 T->getSize(),
1660 T->getSizeModifier(),
1661 T->getIndexTypeCVRQualifiers());
1662 }
1663
1664 QualType
VisitIncompleteArrayType(const IncompleteArrayType * T)1665 ASTNodeImporter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
1666 QualType ToElementType = Importer.Import(T->getElementType());
1667 if (ToElementType.isNull())
1668 return QualType();
1669
1670 return Importer.getToContext().getIncompleteArrayType(ToElementType,
1671 T->getSizeModifier(),
1672 T->getIndexTypeCVRQualifiers());
1673 }
1674
VisitVariableArrayType(const VariableArrayType * T)1675 QualType ASTNodeImporter::VisitVariableArrayType(const VariableArrayType *T) {
1676 QualType ToElementType = Importer.Import(T->getElementType());
1677 if (ToElementType.isNull())
1678 return QualType();
1679
1680 Expr *Size = Importer.Import(T->getSizeExpr());
1681 if (!Size)
1682 return QualType();
1683
1684 SourceRange Brackets = Importer.Import(T->getBracketsRange());
1685 return Importer.getToContext().getVariableArrayType(ToElementType, Size,
1686 T->getSizeModifier(),
1687 T->getIndexTypeCVRQualifiers(),
1688 Brackets);
1689 }
1690
VisitVectorType(const VectorType * T)1691 QualType ASTNodeImporter::VisitVectorType(const VectorType *T) {
1692 QualType ToElementType = Importer.Import(T->getElementType());
1693 if (ToElementType.isNull())
1694 return QualType();
1695
1696 return Importer.getToContext().getVectorType(ToElementType,
1697 T->getNumElements(),
1698 T->getVectorKind());
1699 }
1700
VisitExtVectorType(const ExtVectorType * T)1701 QualType ASTNodeImporter::VisitExtVectorType(const ExtVectorType *T) {
1702 QualType ToElementType = Importer.Import(T->getElementType());
1703 if (ToElementType.isNull())
1704 return QualType();
1705
1706 return Importer.getToContext().getExtVectorType(ToElementType,
1707 T->getNumElements());
1708 }
1709
1710 QualType
VisitFunctionNoProtoType(const FunctionNoProtoType * T)1711 ASTNodeImporter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
1712 // FIXME: What happens if we're importing a function without a prototype
1713 // into C++? Should we make it variadic?
1714 QualType ToResultType = Importer.Import(T->getReturnType());
1715 if (ToResultType.isNull())
1716 return QualType();
1717
1718 return Importer.getToContext().getFunctionNoProtoType(ToResultType,
1719 T->getExtInfo());
1720 }
1721
VisitFunctionProtoType(const FunctionProtoType * T)1722 QualType ASTNodeImporter::VisitFunctionProtoType(const FunctionProtoType *T) {
1723 QualType ToResultType = Importer.Import(T->getReturnType());
1724 if (ToResultType.isNull())
1725 return QualType();
1726
1727 // Import argument types
1728 SmallVector<QualType, 4> ArgTypes;
1729 for (const auto &A : T->param_types()) {
1730 QualType ArgType = Importer.Import(A);
1731 if (ArgType.isNull())
1732 return QualType();
1733 ArgTypes.push_back(ArgType);
1734 }
1735
1736 // Import exception types
1737 SmallVector<QualType, 4> ExceptionTypes;
1738 for (const auto &E : T->exceptions()) {
1739 QualType ExceptionType = Importer.Import(E);
1740 if (ExceptionType.isNull())
1741 return QualType();
1742 ExceptionTypes.push_back(ExceptionType);
1743 }
1744
1745 FunctionProtoType::ExtProtoInfo FromEPI = T->getExtProtoInfo();
1746 FunctionProtoType::ExtProtoInfo ToEPI;
1747
1748 ToEPI.ExtInfo = FromEPI.ExtInfo;
1749 ToEPI.Variadic = FromEPI.Variadic;
1750 ToEPI.HasTrailingReturn = FromEPI.HasTrailingReturn;
1751 ToEPI.TypeQuals = FromEPI.TypeQuals;
1752 ToEPI.RefQualifier = FromEPI.RefQualifier;
1753 ToEPI.ExceptionSpec.Type = FromEPI.ExceptionSpec.Type;
1754 ToEPI.ExceptionSpec.Exceptions = ExceptionTypes;
1755 ToEPI.ExceptionSpec.NoexceptExpr =
1756 Importer.Import(FromEPI.ExceptionSpec.NoexceptExpr);
1757 ToEPI.ExceptionSpec.SourceDecl = cast_or_null<FunctionDecl>(
1758 Importer.Import(FromEPI.ExceptionSpec.SourceDecl));
1759 ToEPI.ExceptionSpec.SourceTemplate = cast_or_null<FunctionDecl>(
1760 Importer.Import(FromEPI.ExceptionSpec.SourceTemplate));
1761
1762 return Importer.getToContext().getFunctionType(ToResultType, ArgTypes, ToEPI);
1763 }
1764
VisitParenType(const ParenType * T)1765 QualType ASTNodeImporter::VisitParenType(const ParenType *T) {
1766 QualType ToInnerType = Importer.Import(T->getInnerType());
1767 if (ToInnerType.isNull())
1768 return QualType();
1769
1770 return Importer.getToContext().getParenType(ToInnerType);
1771 }
1772
VisitTypedefType(const TypedefType * T)1773 QualType ASTNodeImporter::VisitTypedefType(const TypedefType *T) {
1774 TypedefNameDecl *ToDecl
1775 = dyn_cast_or_null<TypedefNameDecl>(Importer.Import(T->getDecl()));
1776 if (!ToDecl)
1777 return QualType();
1778
1779 return Importer.getToContext().getTypeDeclType(ToDecl);
1780 }
1781
VisitTypeOfExprType(const TypeOfExprType * T)1782 QualType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) {
1783 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr());
1784 if (!ToExpr)
1785 return QualType();
1786
1787 return Importer.getToContext().getTypeOfExprType(ToExpr);
1788 }
1789
VisitTypeOfType(const TypeOfType * T)1790 QualType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) {
1791 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType());
1792 if (ToUnderlyingType.isNull())
1793 return QualType();
1794
1795 return Importer.getToContext().getTypeOfType(ToUnderlyingType);
1796 }
1797
VisitDecltypeType(const DecltypeType * T)1798 QualType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) {
1799 // FIXME: Make sure that the "to" context supports C++0x!
1800 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr());
1801 if (!ToExpr)
1802 return QualType();
1803
1804 QualType UnderlyingType = Importer.Import(T->getUnderlyingType());
1805 if (UnderlyingType.isNull())
1806 return QualType();
1807
1808 return Importer.getToContext().getDecltypeType(ToExpr, UnderlyingType);
1809 }
1810
VisitUnaryTransformType(const UnaryTransformType * T)1811 QualType ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) {
1812 QualType ToBaseType = Importer.Import(T->getBaseType());
1813 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType());
1814 if (ToBaseType.isNull() || ToUnderlyingType.isNull())
1815 return QualType();
1816
1817 return Importer.getToContext().getUnaryTransformType(ToBaseType,
1818 ToUnderlyingType,
1819 T->getUTTKind());
1820 }
1821
VisitAutoType(const AutoType * T)1822 QualType ASTNodeImporter::VisitAutoType(const AutoType *T) {
1823 // FIXME: Make sure that the "to" context supports C++11!
1824 QualType FromDeduced = T->getDeducedType();
1825 QualType ToDeduced;
1826 if (!FromDeduced.isNull()) {
1827 ToDeduced = Importer.Import(FromDeduced);
1828 if (ToDeduced.isNull())
1829 return QualType();
1830 }
1831
1832 return Importer.getToContext().getAutoType(ToDeduced, T->getKeyword(),
1833 /*IsDependent*/false);
1834 }
1835
VisitInjectedClassNameType(const InjectedClassNameType * T)1836 QualType ASTNodeImporter::VisitInjectedClassNameType(
1837 const InjectedClassNameType *T) {
1838 CXXRecordDecl *D = cast_or_null<CXXRecordDecl>(Importer.Import(T->getDecl()));
1839 if (!D)
1840 return QualType();
1841
1842 QualType InjType = Importer.Import(T->getInjectedSpecializationType());
1843 if (InjType.isNull())
1844 return QualType();
1845
1846 // FIXME: ASTContext::getInjectedClassNameType is not suitable for AST reading
1847 // See comments in InjectedClassNameType definition for details
1848 // return Importer.getToContext().getInjectedClassNameType(D, InjType);
1849 enum {
1850 TypeAlignmentInBits = 4,
1851 TypeAlignment = 1 << TypeAlignmentInBits
1852 };
1853
1854 return QualType(new (Importer.getToContext(), TypeAlignment)
1855 InjectedClassNameType(D, InjType), 0);
1856 }
1857
VisitRecordType(const RecordType * T)1858 QualType ASTNodeImporter::VisitRecordType(const RecordType *T) {
1859 RecordDecl *ToDecl
1860 = dyn_cast_or_null<RecordDecl>(Importer.Import(T->getDecl()));
1861 if (!ToDecl)
1862 return QualType();
1863
1864 return Importer.getToContext().getTagDeclType(ToDecl);
1865 }
1866
VisitEnumType(const EnumType * T)1867 QualType ASTNodeImporter::VisitEnumType(const EnumType *T) {
1868 EnumDecl *ToDecl
1869 = dyn_cast_or_null<EnumDecl>(Importer.Import(T->getDecl()));
1870 if (!ToDecl)
1871 return QualType();
1872
1873 return Importer.getToContext().getTagDeclType(ToDecl);
1874 }
1875
VisitAttributedType(const AttributedType * T)1876 QualType ASTNodeImporter::VisitAttributedType(const AttributedType *T) {
1877 QualType FromModifiedType = T->getModifiedType();
1878 QualType FromEquivalentType = T->getEquivalentType();
1879 QualType ToModifiedType;
1880 QualType ToEquivalentType;
1881
1882 if (!FromModifiedType.isNull()) {
1883 ToModifiedType = Importer.Import(FromModifiedType);
1884 if (ToModifiedType.isNull())
1885 return QualType();
1886 }
1887 if (!FromEquivalentType.isNull()) {
1888 ToEquivalentType = Importer.Import(FromEquivalentType);
1889 if (ToEquivalentType.isNull())
1890 return QualType();
1891 }
1892
1893 return Importer.getToContext().getAttributedType(T->getAttrKind(),
1894 ToModifiedType, ToEquivalentType);
1895 }
1896
1897
VisitTemplateTypeParmType(const TemplateTypeParmType * T)1898 QualType ASTNodeImporter::VisitTemplateTypeParmType(
1899 const TemplateTypeParmType *T) {
1900 TemplateTypeParmDecl *ParmDecl =
1901 cast_or_null<TemplateTypeParmDecl>(Importer.Import(T->getDecl()));
1902 if (!ParmDecl && T->getDecl())
1903 return QualType();
1904
1905 return Importer.getToContext().getTemplateTypeParmType(
1906 T->getDepth(), T->getIndex(), T->isParameterPack(), ParmDecl);
1907 }
1908
VisitTemplateSpecializationType(const TemplateSpecializationType * T)1909 QualType ASTNodeImporter::VisitTemplateSpecializationType(
1910 const TemplateSpecializationType *T) {
1911 TemplateName ToTemplate = Importer.Import(T->getTemplateName());
1912 if (ToTemplate.isNull())
1913 return QualType();
1914
1915 SmallVector<TemplateArgument, 2> ToTemplateArgs;
1916 if (ImportTemplateArguments(T->getArgs(), T->getNumArgs(), ToTemplateArgs))
1917 return QualType();
1918
1919 QualType ToCanonType;
1920 if (!QualType(T, 0).isCanonical()) {
1921 QualType FromCanonType
1922 = Importer.getFromContext().getCanonicalType(QualType(T, 0));
1923 ToCanonType =Importer.Import(FromCanonType);
1924 if (ToCanonType.isNull())
1925 return QualType();
1926 }
1927 return Importer.getToContext().getTemplateSpecializationType(ToTemplate,
1928 ToTemplateArgs,
1929 ToCanonType);
1930 }
1931
VisitElaboratedType(const ElaboratedType * T)1932 QualType ASTNodeImporter::VisitElaboratedType(const ElaboratedType *T) {
1933 NestedNameSpecifier *ToQualifier = nullptr;
1934 // Note: the qualifier in an ElaboratedType is optional.
1935 if (T->getQualifier()) {
1936 ToQualifier = Importer.Import(T->getQualifier());
1937 if (!ToQualifier)
1938 return QualType();
1939 }
1940
1941 QualType ToNamedType = Importer.Import(T->getNamedType());
1942 if (ToNamedType.isNull())
1943 return QualType();
1944
1945 return Importer.getToContext().getElaboratedType(T->getKeyword(),
1946 ToQualifier, ToNamedType);
1947 }
1948
VisitObjCInterfaceType(const ObjCInterfaceType * T)1949 QualType ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
1950 ObjCInterfaceDecl *Class
1951 = dyn_cast_or_null<ObjCInterfaceDecl>(Importer.Import(T->getDecl()));
1952 if (!Class)
1953 return QualType();
1954
1955 return Importer.getToContext().getObjCInterfaceType(Class);
1956 }
1957
VisitObjCObjectType(const ObjCObjectType * T)1958 QualType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) {
1959 QualType ToBaseType = Importer.Import(T->getBaseType());
1960 if (ToBaseType.isNull())
1961 return QualType();
1962
1963 SmallVector<QualType, 4> TypeArgs;
1964 for (auto TypeArg : T->getTypeArgsAsWritten()) {
1965 QualType ImportedTypeArg = Importer.Import(TypeArg);
1966 if (ImportedTypeArg.isNull())
1967 return QualType();
1968
1969 TypeArgs.push_back(ImportedTypeArg);
1970 }
1971
1972 SmallVector<ObjCProtocolDecl *, 4> Protocols;
1973 for (auto *P : T->quals()) {
1974 ObjCProtocolDecl *Protocol
1975 = dyn_cast_or_null<ObjCProtocolDecl>(Importer.Import(P));
1976 if (!Protocol)
1977 return QualType();
1978 Protocols.push_back(Protocol);
1979 }
1980
1981 return Importer.getToContext().getObjCObjectType(ToBaseType, TypeArgs,
1982 Protocols,
1983 T->isKindOfTypeAsWritten());
1984 }
1985
1986 QualType
VisitObjCObjectPointerType(const ObjCObjectPointerType * T)1987 ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
1988 QualType ToPointeeType = Importer.Import(T->getPointeeType());
1989 if (ToPointeeType.isNull())
1990 return QualType();
1991
1992 return Importer.getToContext().getObjCObjectPointerType(ToPointeeType);
1993 }
1994
1995 //----------------------------------------------------------------------------
1996 // Import Declarations
1997 //----------------------------------------------------------------------------
ImportDeclParts(NamedDecl * D,DeclContext * & DC,DeclContext * & LexicalDC,DeclarationName & Name,NamedDecl * & ToD,SourceLocation & Loc)1998 bool ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclContext *&DC,
1999 DeclContext *&LexicalDC,
2000 DeclarationName &Name,
2001 NamedDecl *&ToD,
2002 SourceLocation &Loc) {
2003 // Import the context of this declaration.
2004 DC = Importer.ImportContext(D->getDeclContext());
2005 if (!DC)
2006 return true;
2007
2008 LexicalDC = DC;
2009 if (D->getDeclContext() != D->getLexicalDeclContext()) {
2010 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
2011 if (!LexicalDC)
2012 return true;
2013 }
2014
2015 // Import the name of this declaration.
2016 Name = Importer.Import(D->getDeclName());
2017 if (D->getDeclName() && !Name)
2018 return true;
2019
2020 // Import the location of this declaration.
2021 Loc = Importer.Import(D->getLocation());
2022 ToD = cast_or_null<NamedDecl>(Importer.GetAlreadyImportedOrNull(D));
2023 return false;
2024 }
2025
ImportDefinitionIfNeeded(Decl * FromD,Decl * ToD)2026 void ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) {
2027 if (!FromD)
2028 return;
2029
2030 if (!ToD) {
2031 ToD = Importer.Import(FromD);
2032 if (!ToD)
2033 return;
2034 }
2035
2036 if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(FromD)) {
2037 if (RecordDecl *ToRecord = cast_or_null<RecordDecl>(ToD)) {
2038 if (FromRecord->getDefinition() && FromRecord->isCompleteDefinition() && !ToRecord->getDefinition()) {
2039 ImportDefinition(FromRecord, ToRecord);
2040 }
2041 }
2042 return;
2043 }
2044
2045 if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(FromD)) {
2046 if (EnumDecl *ToEnum = cast_or_null<EnumDecl>(ToD)) {
2047 if (FromEnum->getDefinition() && !ToEnum->getDefinition()) {
2048 ImportDefinition(FromEnum, ToEnum);
2049 }
2050 }
2051 return;
2052 }
2053 }
2054
2055 void
ImportDeclarationNameLoc(const DeclarationNameInfo & From,DeclarationNameInfo & To)2056 ASTNodeImporter::ImportDeclarationNameLoc(const DeclarationNameInfo &From,
2057 DeclarationNameInfo& To) {
2058 // NOTE: To.Name and To.Loc are already imported.
2059 // We only have to import To.LocInfo.
2060 switch (To.getName().getNameKind()) {
2061 case DeclarationName::Identifier:
2062 case DeclarationName::ObjCZeroArgSelector:
2063 case DeclarationName::ObjCOneArgSelector:
2064 case DeclarationName::ObjCMultiArgSelector:
2065 case DeclarationName::CXXUsingDirective:
2066 return;
2067
2068 case DeclarationName::CXXOperatorName: {
2069 SourceRange Range = From.getCXXOperatorNameRange();
2070 To.setCXXOperatorNameRange(Importer.Import(Range));
2071 return;
2072 }
2073 case DeclarationName::CXXLiteralOperatorName: {
2074 SourceLocation Loc = From.getCXXLiteralOperatorNameLoc();
2075 To.setCXXLiteralOperatorNameLoc(Importer.Import(Loc));
2076 return;
2077 }
2078 case DeclarationName::CXXConstructorName:
2079 case DeclarationName::CXXDestructorName:
2080 case DeclarationName::CXXConversionFunctionName: {
2081 TypeSourceInfo *FromTInfo = From.getNamedTypeInfo();
2082 To.setNamedTypeInfo(Importer.Import(FromTInfo));
2083 return;
2084 }
2085 }
2086 llvm_unreachable("Unknown name kind.");
2087 }
2088
ImportDeclContext(DeclContext * FromDC,bool ForceImport)2089 void ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) {
2090 if (Importer.isMinimalImport() && !ForceImport) {
2091 Importer.ImportContext(FromDC);
2092 return;
2093 }
2094
2095 for (auto *From : FromDC->decls())
2096 Importer.Import(From);
2097 }
2098
ImportDefinition(RecordDecl * From,RecordDecl * To,ImportDefinitionKind Kind)2099 bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To,
2100 ImportDefinitionKind Kind) {
2101 if (To->getDefinition() || To->isBeingDefined()) {
2102 if (Kind == IDK_Everything)
2103 ImportDeclContext(From, /*ForceImport=*/true);
2104
2105 return false;
2106 }
2107
2108 To->startDefinition();
2109
2110 // Add base classes.
2111 if (CXXRecordDecl *ToCXX = dyn_cast<CXXRecordDecl>(To)) {
2112 CXXRecordDecl *FromCXX = cast<CXXRecordDecl>(From);
2113
2114 struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data();
2115 struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data();
2116 ToData.UserDeclaredConstructor = FromData.UserDeclaredConstructor;
2117 ToData.UserDeclaredSpecialMembers = FromData.UserDeclaredSpecialMembers;
2118 ToData.Aggregate = FromData.Aggregate;
2119 ToData.PlainOldData = FromData.PlainOldData;
2120 ToData.Empty = FromData.Empty;
2121 ToData.Polymorphic = FromData.Polymorphic;
2122 ToData.Abstract = FromData.Abstract;
2123 ToData.IsStandardLayout = FromData.IsStandardLayout;
2124 ToData.HasNoNonEmptyBases = FromData.HasNoNonEmptyBases;
2125 ToData.HasPrivateFields = FromData.HasPrivateFields;
2126 ToData.HasProtectedFields = FromData.HasProtectedFields;
2127 ToData.HasPublicFields = FromData.HasPublicFields;
2128 ToData.HasMutableFields = FromData.HasMutableFields;
2129 ToData.HasVariantMembers = FromData.HasVariantMembers;
2130 ToData.HasOnlyCMembers = FromData.HasOnlyCMembers;
2131 ToData.HasInClassInitializer = FromData.HasInClassInitializer;
2132 ToData.HasUninitializedReferenceMember
2133 = FromData.HasUninitializedReferenceMember;
2134 ToData.HasUninitializedFields = FromData.HasUninitializedFields;
2135 ToData.HasInheritedConstructor = FromData.HasInheritedConstructor;
2136 ToData.HasInheritedAssignment = FromData.HasInheritedAssignment;
2137 ToData.NeedOverloadResolutionForMoveConstructor
2138 = FromData.NeedOverloadResolutionForMoveConstructor;
2139 ToData.NeedOverloadResolutionForMoveAssignment
2140 = FromData.NeedOverloadResolutionForMoveAssignment;
2141 ToData.NeedOverloadResolutionForDestructor
2142 = FromData.NeedOverloadResolutionForDestructor;
2143 ToData.DefaultedMoveConstructorIsDeleted
2144 = FromData.DefaultedMoveConstructorIsDeleted;
2145 ToData.DefaultedMoveAssignmentIsDeleted
2146 = FromData.DefaultedMoveAssignmentIsDeleted;
2147 ToData.DefaultedDestructorIsDeleted = FromData.DefaultedDestructorIsDeleted;
2148 ToData.HasTrivialSpecialMembers = FromData.HasTrivialSpecialMembers;
2149 ToData.HasIrrelevantDestructor = FromData.HasIrrelevantDestructor;
2150 ToData.HasConstexprNonCopyMoveConstructor
2151 = FromData.HasConstexprNonCopyMoveConstructor;
2152 ToData.HasDefaultedDefaultConstructor
2153 = FromData.HasDefaultedDefaultConstructor;
2154 ToData.DefaultedDefaultConstructorIsConstexpr
2155 = FromData.DefaultedDefaultConstructorIsConstexpr;
2156 ToData.HasConstexprDefaultConstructor
2157 = FromData.HasConstexprDefaultConstructor;
2158 ToData.HasNonLiteralTypeFieldsOrBases
2159 = FromData.HasNonLiteralTypeFieldsOrBases;
2160 // ComputedVisibleConversions not imported.
2161 ToData.UserProvidedDefaultConstructor
2162 = FromData.UserProvidedDefaultConstructor;
2163 ToData.DeclaredSpecialMembers = FromData.DeclaredSpecialMembers;
2164 ToData.ImplicitCopyConstructorHasConstParam
2165 = FromData.ImplicitCopyConstructorHasConstParam;
2166 ToData.ImplicitCopyAssignmentHasConstParam
2167 = FromData.ImplicitCopyAssignmentHasConstParam;
2168 ToData.HasDeclaredCopyConstructorWithConstParam
2169 = FromData.HasDeclaredCopyConstructorWithConstParam;
2170 ToData.HasDeclaredCopyAssignmentWithConstParam
2171 = FromData.HasDeclaredCopyAssignmentWithConstParam;
2172 ToData.IsLambda = FromData.IsLambda;
2173
2174 SmallVector<CXXBaseSpecifier *, 4> Bases;
2175 for (const auto &Base1 : FromCXX->bases()) {
2176 QualType T = Importer.Import(Base1.getType());
2177 if (T.isNull())
2178 return true;
2179
2180 SourceLocation EllipsisLoc;
2181 if (Base1.isPackExpansion())
2182 EllipsisLoc = Importer.Import(Base1.getEllipsisLoc());
2183
2184 // Ensure that we have a definition for the base.
2185 ImportDefinitionIfNeeded(Base1.getType()->getAsCXXRecordDecl());
2186
2187 Bases.push_back(
2188 new (Importer.getToContext())
2189 CXXBaseSpecifier(Importer.Import(Base1.getSourceRange()),
2190 Base1.isVirtual(),
2191 Base1.isBaseOfClass(),
2192 Base1.getAccessSpecifierAsWritten(),
2193 Importer.Import(Base1.getTypeSourceInfo()),
2194 EllipsisLoc));
2195 }
2196 if (!Bases.empty())
2197 ToCXX->setBases(Bases.data(), Bases.size());
2198 }
2199
2200 if (shouldForceImportDeclContext(Kind))
2201 ImportDeclContext(From, /*ForceImport=*/true);
2202
2203 To->completeDefinition();
2204 return false;
2205 }
2206
ImportDefinition(VarDecl * From,VarDecl * To,ImportDefinitionKind Kind)2207 bool ASTNodeImporter::ImportDefinition(VarDecl *From, VarDecl *To,
2208 ImportDefinitionKind Kind) {
2209 if (To->getAnyInitializer())
2210 return false;
2211
2212 // FIXME: Can we really import any initializer? Alternatively, we could force
2213 // ourselves to import every declaration of a variable and then only use
2214 // getInit() here.
2215 To->setInit(Importer.Import(const_cast<Expr *>(From->getAnyInitializer())));
2216
2217 // FIXME: Other bits to merge?
2218
2219 return false;
2220 }
2221
ImportDefinition(EnumDecl * From,EnumDecl * To,ImportDefinitionKind Kind)2222 bool ASTNodeImporter::ImportDefinition(EnumDecl *From, EnumDecl *To,
2223 ImportDefinitionKind Kind) {
2224 if (To->getDefinition() || To->isBeingDefined()) {
2225 if (Kind == IDK_Everything)
2226 ImportDeclContext(From, /*ForceImport=*/true);
2227 return false;
2228 }
2229
2230 To->startDefinition();
2231
2232 QualType T = Importer.Import(Importer.getFromContext().getTypeDeclType(From));
2233 if (T.isNull())
2234 return true;
2235
2236 QualType ToPromotionType = Importer.Import(From->getPromotionType());
2237 if (ToPromotionType.isNull())
2238 return true;
2239
2240 if (shouldForceImportDeclContext(Kind))
2241 ImportDeclContext(From, /*ForceImport=*/true);
2242
2243 // FIXME: we might need to merge the number of positive or negative bits
2244 // if the enumerator lists don't match.
2245 To->completeDefinition(T, ToPromotionType,
2246 From->getNumPositiveBits(),
2247 From->getNumNegativeBits());
2248 return false;
2249 }
2250
ImportTemplateParameterList(TemplateParameterList * Params)2251 TemplateParameterList *ASTNodeImporter::ImportTemplateParameterList(
2252 TemplateParameterList *Params) {
2253 SmallVector<NamedDecl *, 4> ToParams;
2254 ToParams.reserve(Params->size());
2255 for (TemplateParameterList::iterator P = Params->begin(),
2256 PEnd = Params->end();
2257 P != PEnd; ++P) {
2258 Decl *To = Importer.Import(*P);
2259 if (!To)
2260 return nullptr;
2261
2262 ToParams.push_back(cast<NamedDecl>(To));
2263 }
2264
2265 return TemplateParameterList::Create(Importer.getToContext(),
2266 Importer.Import(Params->getTemplateLoc()),
2267 Importer.Import(Params->getLAngleLoc()),
2268 ToParams,
2269 Importer.Import(Params->getRAngleLoc()));
2270 }
2271
2272 TemplateArgument
ImportTemplateArgument(const TemplateArgument & From)2273 ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) {
2274 switch (From.getKind()) {
2275 case TemplateArgument::Null:
2276 return TemplateArgument();
2277
2278 case TemplateArgument::Type: {
2279 QualType ToType = Importer.Import(From.getAsType());
2280 if (ToType.isNull())
2281 return TemplateArgument();
2282 return TemplateArgument(ToType);
2283 }
2284
2285 case TemplateArgument::Integral: {
2286 QualType ToType = Importer.Import(From.getIntegralType());
2287 if (ToType.isNull())
2288 return TemplateArgument();
2289 return TemplateArgument(From, ToType);
2290 }
2291
2292 case TemplateArgument::Declaration: {
2293 ValueDecl *To = cast_or_null<ValueDecl>(Importer.Import(From.getAsDecl()));
2294 QualType ToType = Importer.Import(From.getParamTypeForDecl());
2295 if (!To || ToType.isNull())
2296 return TemplateArgument();
2297 return TemplateArgument(To, ToType);
2298 }
2299
2300 case TemplateArgument::NullPtr: {
2301 QualType ToType = Importer.Import(From.getNullPtrType());
2302 if (ToType.isNull())
2303 return TemplateArgument();
2304 return TemplateArgument(ToType, /*isNullPtr*/true);
2305 }
2306
2307 case TemplateArgument::Template: {
2308 TemplateName ToTemplate = Importer.Import(From.getAsTemplate());
2309 if (ToTemplate.isNull())
2310 return TemplateArgument();
2311
2312 return TemplateArgument(ToTemplate);
2313 }
2314
2315 case TemplateArgument::TemplateExpansion: {
2316 TemplateName ToTemplate
2317 = Importer.Import(From.getAsTemplateOrTemplatePattern());
2318 if (ToTemplate.isNull())
2319 return TemplateArgument();
2320
2321 return TemplateArgument(ToTemplate, From.getNumTemplateExpansions());
2322 }
2323
2324 case TemplateArgument::Expression:
2325 if (Expr *ToExpr = Importer.Import(From.getAsExpr()))
2326 return TemplateArgument(ToExpr);
2327 return TemplateArgument();
2328
2329 case TemplateArgument::Pack: {
2330 SmallVector<TemplateArgument, 2> ToPack;
2331 ToPack.reserve(From.pack_size());
2332 if (ImportTemplateArguments(From.pack_begin(), From.pack_size(), ToPack))
2333 return TemplateArgument();
2334
2335 return TemplateArgument(
2336 llvm::makeArrayRef(ToPack).copy(Importer.getToContext()));
2337 }
2338 }
2339
2340 llvm_unreachable("Invalid template argument kind");
2341 }
2342
ImportTemplateArguments(const TemplateArgument * FromArgs,unsigned NumFromArgs,SmallVectorImpl<TemplateArgument> & ToArgs)2343 bool ASTNodeImporter::ImportTemplateArguments(const TemplateArgument *FromArgs,
2344 unsigned NumFromArgs,
2345 SmallVectorImpl<TemplateArgument> &ToArgs) {
2346 for (unsigned I = 0; I != NumFromArgs; ++I) {
2347 TemplateArgument To = ImportTemplateArgument(FromArgs[I]);
2348 if (To.isNull() && !FromArgs[I].isNull())
2349 return true;
2350
2351 ToArgs.push_back(To);
2352 }
2353
2354 return false;
2355 }
2356
IsStructuralMatch(RecordDecl * FromRecord,RecordDecl * ToRecord,bool Complain)2357 bool ASTNodeImporter::IsStructuralMatch(RecordDecl *FromRecord,
2358 RecordDecl *ToRecord, bool Complain) {
2359 // Eliminate a potential failure point where we attempt to re-import
2360 // something we're trying to import while completing ToRecord.
2361 Decl *ToOrigin = Importer.GetOriginalDecl(ToRecord);
2362 if (ToOrigin) {
2363 RecordDecl *ToOriginRecord = dyn_cast<RecordDecl>(ToOrigin);
2364 if (ToOriginRecord)
2365 ToRecord = ToOriginRecord;
2366 }
2367
2368 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2369 ToRecord->getASTContext(),
2370 Importer.getNonEquivalentDecls(),
2371 false, Complain);
2372 return Ctx.IsStructurallyEquivalent(FromRecord, ToRecord);
2373 }
2374
IsStructuralMatch(VarDecl * FromVar,VarDecl * ToVar,bool Complain)2375 bool ASTNodeImporter::IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
2376 bool Complain) {
2377 StructuralEquivalenceContext Ctx(
2378 Importer.getFromContext(), Importer.getToContext(),
2379 Importer.getNonEquivalentDecls(), false, Complain);
2380 return Ctx.IsStructurallyEquivalent(FromVar, ToVar);
2381 }
2382
IsStructuralMatch(EnumDecl * FromEnum,EnumDecl * ToEnum)2383 bool ASTNodeImporter::IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToEnum) {
2384 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2385 Importer.getToContext(),
2386 Importer.getNonEquivalentDecls());
2387 return Ctx.IsStructurallyEquivalent(FromEnum, ToEnum);
2388 }
2389
IsStructuralMatch(EnumConstantDecl * FromEC,EnumConstantDecl * ToEC)2390 bool ASTNodeImporter::IsStructuralMatch(EnumConstantDecl *FromEC,
2391 EnumConstantDecl *ToEC)
2392 {
2393 const llvm::APSInt &FromVal = FromEC->getInitVal();
2394 const llvm::APSInt &ToVal = ToEC->getInitVal();
2395
2396 return FromVal.isSigned() == ToVal.isSigned() &&
2397 FromVal.getBitWidth() == ToVal.getBitWidth() &&
2398 FromVal == ToVal;
2399 }
2400
IsStructuralMatch(ClassTemplateDecl * From,ClassTemplateDecl * To)2401 bool ASTNodeImporter::IsStructuralMatch(ClassTemplateDecl *From,
2402 ClassTemplateDecl *To) {
2403 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2404 Importer.getToContext(),
2405 Importer.getNonEquivalentDecls());
2406 return Ctx.IsStructurallyEquivalent(From, To);
2407 }
2408
IsStructuralMatch(VarTemplateDecl * From,VarTemplateDecl * To)2409 bool ASTNodeImporter::IsStructuralMatch(VarTemplateDecl *From,
2410 VarTemplateDecl *To) {
2411 StructuralEquivalenceContext Ctx(Importer.getFromContext(),
2412 Importer.getToContext(),
2413 Importer.getNonEquivalentDecls());
2414 return Ctx.IsStructurallyEquivalent(From, To);
2415 }
2416
VisitDecl(Decl * D)2417 Decl *ASTNodeImporter::VisitDecl(Decl *D) {
2418 Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
2419 << D->getDeclKindName();
2420 return nullptr;
2421 }
2422
VisitTranslationUnitDecl(TranslationUnitDecl * D)2423 Decl *ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
2424 TranslationUnitDecl *ToD =
2425 Importer.getToContext().getTranslationUnitDecl();
2426
2427 Importer.Imported(D, ToD);
2428
2429 return ToD;
2430 }
2431
VisitAccessSpecDecl(AccessSpecDecl * D)2432 Decl *ASTNodeImporter::VisitAccessSpecDecl(AccessSpecDecl *D) {
2433
2434 SourceLocation Loc = Importer.Import(D->getLocation());
2435 SourceLocation ColonLoc = Importer.Import(D->getColonLoc());
2436
2437 // Import the context of this declaration.
2438 DeclContext *DC = Importer.ImportContext(D->getDeclContext());
2439 if (!DC)
2440 return nullptr;
2441
2442 AccessSpecDecl *accessSpecDecl
2443 = AccessSpecDecl::Create(Importer.getToContext(), D->getAccess(),
2444 DC, Loc, ColonLoc);
2445
2446 if (!accessSpecDecl)
2447 return nullptr;
2448
2449 // Lexical DeclContext and Semantic DeclContext
2450 // is always the same for the accessSpec.
2451 accessSpecDecl->setLexicalDeclContext(DC);
2452 DC->addDeclInternal(accessSpecDecl);
2453
2454 return accessSpecDecl;
2455 }
2456
VisitNamespaceDecl(NamespaceDecl * D)2457 Decl *ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) {
2458 // Import the major distinguishing characteristics of this namespace.
2459 DeclContext *DC, *LexicalDC;
2460 DeclarationName Name;
2461 SourceLocation Loc;
2462 NamedDecl *ToD;
2463 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2464 return nullptr;
2465 if (ToD)
2466 return ToD;
2467
2468 NamespaceDecl *MergeWithNamespace = nullptr;
2469 if (!Name) {
2470 // This is an anonymous namespace. Adopt an existing anonymous
2471 // namespace if we can.
2472 // FIXME: Not testable.
2473 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC))
2474 MergeWithNamespace = TU->getAnonymousNamespace();
2475 else
2476 MergeWithNamespace = cast<NamespaceDecl>(DC)->getAnonymousNamespace();
2477 } else {
2478 SmallVector<NamedDecl *, 4> ConflictingDecls;
2479 SmallVector<NamedDecl *, 2> FoundDecls;
2480 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
2481 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2482 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Namespace))
2483 continue;
2484
2485 if (NamespaceDecl *FoundNS = dyn_cast<NamespaceDecl>(FoundDecls[I])) {
2486 MergeWithNamespace = FoundNS;
2487 ConflictingDecls.clear();
2488 break;
2489 }
2490
2491 ConflictingDecls.push_back(FoundDecls[I]);
2492 }
2493
2494 if (!ConflictingDecls.empty()) {
2495 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Namespace,
2496 ConflictingDecls.data(),
2497 ConflictingDecls.size());
2498 }
2499 }
2500
2501 // Create the "to" namespace, if needed.
2502 NamespaceDecl *ToNamespace = MergeWithNamespace;
2503 if (!ToNamespace) {
2504 ToNamespace = NamespaceDecl::Create(Importer.getToContext(), DC,
2505 D->isInline(),
2506 Importer.Import(D->getLocStart()),
2507 Loc, Name.getAsIdentifierInfo(),
2508 /*PrevDecl=*/nullptr);
2509 ToNamespace->setLexicalDeclContext(LexicalDC);
2510 LexicalDC->addDeclInternal(ToNamespace);
2511
2512 // If this is an anonymous namespace, register it as the anonymous
2513 // namespace within its context.
2514 if (!Name) {
2515 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC))
2516 TU->setAnonymousNamespace(ToNamespace);
2517 else
2518 cast<NamespaceDecl>(DC)->setAnonymousNamespace(ToNamespace);
2519 }
2520 }
2521 Importer.Imported(D, ToNamespace);
2522
2523 ImportDeclContext(D);
2524
2525 return ToNamespace;
2526 }
2527
VisitTypedefNameDecl(TypedefNameDecl * D,bool IsAlias)2528 Decl *ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) {
2529 // Import the major distinguishing characteristics of this typedef.
2530 DeclContext *DC, *LexicalDC;
2531 DeclarationName Name;
2532 SourceLocation Loc;
2533 NamedDecl *ToD;
2534 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2535 return nullptr;
2536 if (ToD)
2537 return ToD;
2538
2539 // If this typedef is not in block scope, determine whether we've
2540 // seen a typedef with the same name (that we can merge with) or any
2541 // other entity by that name (which name lookup could conflict with).
2542 if (!DC->isFunctionOrMethod()) {
2543 SmallVector<NamedDecl *, 4> ConflictingDecls;
2544 unsigned IDNS = Decl::IDNS_Ordinary;
2545 SmallVector<NamedDecl *, 2> FoundDecls;
2546 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
2547 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2548 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2549 continue;
2550 if (TypedefNameDecl *FoundTypedef =
2551 dyn_cast<TypedefNameDecl>(FoundDecls[I])) {
2552 if (Importer.IsStructurallyEquivalent(D->getUnderlyingType(),
2553 FoundTypedef->getUnderlyingType()))
2554 return Importer.Imported(D, FoundTypedef);
2555 }
2556
2557 ConflictingDecls.push_back(FoundDecls[I]);
2558 }
2559
2560 if (!ConflictingDecls.empty()) {
2561 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2562 ConflictingDecls.data(),
2563 ConflictingDecls.size());
2564 if (!Name)
2565 return nullptr;
2566 }
2567 }
2568
2569 // Import the underlying type of this typedef;
2570 QualType T = Importer.Import(D->getUnderlyingType());
2571 if (T.isNull())
2572 return nullptr;
2573
2574 // Create the new typedef node.
2575 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
2576 SourceLocation StartL = Importer.Import(D->getLocStart());
2577 TypedefNameDecl *ToTypedef;
2578 if (IsAlias)
2579 ToTypedef = TypeAliasDecl::Create(Importer.getToContext(), DC,
2580 StartL, Loc,
2581 Name.getAsIdentifierInfo(),
2582 TInfo);
2583 else
2584 ToTypedef = TypedefDecl::Create(Importer.getToContext(), DC,
2585 StartL, Loc,
2586 Name.getAsIdentifierInfo(),
2587 TInfo);
2588
2589 ToTypedef->setAccess(D->getAccess());
2590 ToTypedef->setLexicalDeclContext(LexicalDC);
2591 Importer.Imported(D, ToTypedef);
2592 LexicalDC->addDeclInternal(ToTypedef);
2593
2594 return ToTypedef;
2595 }
2596
VisitTypedefDecl(TypedefDecl * D)2597 Decl *ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) {
2598 return VisitTypedefNameDecl(D, /*IsAlias=*/false);
2599 }
2600
VisitTypeAliasDecl(TypeAliasDecl * D)2601 Decl *ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) {
2602 return VisitTypedefNameDecl(D, /*IsAlias=*/true);
2603 }
2604
VisitLabelDecl(LabelDecl * D)2605 Decl *ASTNodeImporter::VisitLabelDecl(LabelDecl *D) {
2606 // Import the major distinguishing characteristics of this label.
2607 DeclContext *DC, *LexicalDC;
2608 DeclarationName Name;
2609 SourceLocation Loc;
2610 NamedDecl *ToD;
2611 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2612 return nullptr;
2613 if (ToD)
2614 return ToD;
2615
2616 assert(LexicalDC->isFunctionOrMethod());
2617
2618 LabelDecl *ToLabel = D->isGnuLocal()
2619 ? LabelDecl::Create(Importer.getToContext(),
2620 DC, Importer.Import(D->getLocation()),
2621 Name.getAsIdentifierInfo(),
2622 Importer.Import(D->getLocStart()))
2623 : LabelDecl::Create(Importer.getToContext(),
2624 DC, Importer.Import(D->getLocation()),
2625 Name.getAsIdentifierInfo());
2626 Importer.Imported(D, ToLabel);
2627
2628 LabelStmt *Label = cast_or_null<LabelStmt>(Importer.Import(D->getStmt()));
2629 if (!Label)
2630 return nullptr;
2631
2632 ToLabel->setStmt(Label);
2633 ToLabel->setLexicalDeclContext(LexicalDC);
2634 LexicalDC->addDeclInternal(ToLabel);
2635 return ToLabel;
2636 }
2637
VisitEnumDecl(EnumDecl * D)2638 Decl *ASTNodeImporter::VisitEnumDecl(EnumDecl *D) {
2639 // Import the major distinguishing characteristics of this enum.
2640 DeclContext *DC, *LexicalDC;
2641 DeclarationName Name;
2642 SourceLocation Loc;
2643 NamedDecl *ToD;
2644 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2645 return nullptr;
2646 if (ToD)
2647 return ToD;
2648
2649 // Figure out what enum name we're looking for.
2650 unsigned IDNS = Decl::IDNS_Tag;
2651 DeclarationName SearchName = Name;
2652 if (!SearchName && D->getTypedefNameForAnonDecl()) {
2653 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName());
2654 IDNS = Decl::IDNS_Ordinary;
2655 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
2656 IDNS |= Decl::IDNS_Ordinary;
2657
2658 // We may already have an enum of the same name; try to find and match it.
2659 if (!DC->isFunctionOrMethod() && SearchName) {
2660 SmallVector<NamedDecl *, 4> ConflictingDecls;
2661 SmallVector<NamedDecl *, 2> FoundDecls;
2662 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
2663 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2664 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2665 continue;
2666
2667 Decl *Found = FoundDecls[I];
2668 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
2669 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
2670 Found = Tag->getDecl();
2671 }
2672
2673 if (EnumDecl *FoundEnum = dyn_cast<EnumDecl>(Found)) {
2674 if (IsStructuralMatch(D, FoundEnum))
2675 return Importer.Imported(D, FoundEnum);
2676 }
2677
2678 ConflictingDecls.push_back(FoundDecls[I]);
2679 }
2680
2681 if (!ConflictingDecls.empty()) {
2682 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2683 ConflictingDecls.data(),
2684 ConflictingDecls.size());
2685 }
2686 }
2687
2688 // Create the enum declaration.
2689 EnumDecl *D2 = EnumDecl::Create(Importer.getToContext(), DC,
2690 Importer.Import(D->getLocStart()),
2691 Loc, Name.getAsIdentifierInfo(), nullptr,
2692 D->isScoped(), D->isScopedUsingClassTag(),
2693 D->isFixed());
2694 // Import the qualifier, if any.
2695 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2696 D2->setAccess(D->getAccess());
2697 D2->setLexicalDeclContext(LexicalDC);
2698 Importer.Imported(D, D2);
2699 LexicalDC->addDeclInternal(D2);
2700
2701 // Import the integer type.
2702 QualType ToIntegerType = Importer.Import(D->getIntegerType());
2703 if (ToIntegerType.isNull())
2704 return nullptr;
2705 D2->setIntegerType(ToIntegerType);
2706
2707 // Import the definition
2708 if (D->isCompleteDefinition() && ImportDefinition(D, D2))
2709 return nullptr;
2710
2711 return D2;
2712 }
2713
VisitRecordDecl(RecordDecl * D)2714 Decl *ASTNodeImporter::VisitRecordDecl(RecordDecl *D) {
2715 // If this record has a definition in the translation unit we're coming from,
2716 // but this particular declaration is not that definition, import the
2717 // definition and map to that.
2718 TagDecl *Definition = D->getDefinition();
2719 if (Definition && Definition != D) {
2720 Decl *ImportedDef = Importer.Import(Definition);
2721 if (!ImportedDef)
2722 return nullptr;
2723
2724 return Importer.Imported(D, ImportedDef);
2725 }
2726
2727 // Import the major distinguishing characteristics of this record.
2728 DeclContext *DC, *LexicalDC;
2729 DeclarationName Name;
2730 SourceLocation Loc;
2731 NamedDecl *ToD;
2732 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2733 return nullptr;
2734 if (ToD)
2735 return ToD;
2736
2737 // Figure out what structure name we're looking for.
2738 unsigned IDNS = Decl::IDNS_Tag;
2739 DeclarationName SearchName = Name;
2740 if (!SearchName && D->getTypedefNameForAnonDecl()) {
2741 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName());
2742 IDNS = Decl::IDNS_Ordinary;
2743 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
2744 IDNS |= Decl::IDNS_Ordinary;
2745
2746 // We may already have a record of the same name; try to find and match it.
2747 RecordDecl *AdoptDecl = nullptr;
2748 if (!DC->isFunctionOrMethod()) {
2749 SmallVector<NamedDecl *, 4> ConflictingDecls;
2750 SmallVector<NamedDecl *, 2> FoundDecls;
2751 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
2752 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2753 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2754 continue;
2755
2756 Decl *Found = FoundDecls[I];
2757 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
2758 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
2759 Found = Tag->getDecl();
2760 }
2761
2762 if (RecordDecl *FoundRecord = dyn_cast<RecordDecl>(Found)) {
2763 if (D->isAnonymousStructOrUnion() &&
2764 FoundRecord->isAnonymousStructOrUnion()) {
2765 // If both anonymous structs/unions are in a record context, make sure
2766 // they occur in the same location in the context records.
2767 if (Optional<unsigned> Index1
2768 = findUntaggedStructOrUnionIndex(D)) {
2769 if (Optional<unsigned> Index2 =
2770 findUntaggedStructOrUnionIndex(FoundRecord)) {
2771 if (*Index1 != *Index2)
2772 continue;
2773 }
2774 }
2775 }
2776
2777 if (RecordDecl *FoundDef = FoundRecord->getDefinition()) {
2778 if ((SearchName && !D->isCompleteDefinition())
2779 || (D->isCompleteDefinition() &&
2780 D->isAnonymousStructOrUnion()
2781 == FoundDef->isAnonymousStructOrUnion() &&
2782 IsStructuralMatch(D, FoundDef))) {
2783 // The record types structurally match, or the "from" translation
2784 // unit only had a forward declaration anyway; call it the same
2785 // function.
2786 // FIXME: For C++, we should also merge methods here.
2787 return Importer.Imported(D, FoundDef);
2788 }
2789 } else if (!D->isCompleteDefinition()) {
2790 // We have a forward declaration of this type, so adopt that forward
2791 // declaration rather than building a new one.
2792
2793 // If one or both can be completed from external storage then try one
2794 // last time to complete and compare them before doing this.
2795
2796 if (FoundRecord->hasExternalLexicalStorage() &&
2797 !FoundRecord->isCompleteDefinition())
2798 FoundRecord->getASTContext().getExternalSource()->CompleteType(FoundRecord);
2799 if (D->hasExternalLexicalStorage())
2800 D->getASTContext().getExternalSource()->CompleteType(D);
2801
2802 if (FoundRecord->isCompleteDefinition() &&
2803 D->isCompleteDefinition() &&
2804 !IsStructuralMatch(D, FoundRecord))
2805 continue;
2806
2807 AdoptDecl = FoundRecord;
2808 continue;
2809 } else if (!SearchName) {
2810 continue;
2811 }
2812 }
2813
2814 ConflictingDecls.push_back(FoundDecls[I]);
2815 }
2816
2817 if (!ConflictingDecls.empty() && SearchName) {
2818 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2819 ConflictingDecls.data(),
2820 ConflictingDecls.size());
2821 }
2822 }
2823
2824 // Create the record declaration.
2825 RecordDecl *D2 = AdoptDecl;
2826 SourceLocation StartLoc = Importer.Import(D->getLocStart());
2827 if (!D2) {
2828 CXXRecordDecl *D2CXX = nullptr;
2829 if (CXXRecordDecl *DCXX = llvm::dyn_cast<CXXRecordDecl>(D)) {
2830 if (DCXX->isLambda()) {
2831 TypeSourceInfo *TInfo = Importer.Import(DCXX->getLambdaTypeInfo());
2832 D2CXX = CXXRecordDecl::CreateLambda(Importer.getToContext(),
2833 DC, TInfo, Loc,
2834 DCXX->isDependentLambda(),
2835 DCXX->isGenericLambda(),
2836 DCXX->getLambdaCaptureDefault());
2837 Decl *CDecl = Importer.Import(DCXX->getLambdaContextDecl());
2838 if (DCXX->getLambdaContextDecl() && !CDecl)
2839 return nullptr;
2840 D2CXX->setLambdaMangling(DCXX->getLambdaManglingNumber(), CDecl);
2841 } else if (DCXX->isInjectedClassName()) {
2842 // We have to be careful to do a similar dance to the one in
2843 // Sema::ActOnStartCXXMemberDeclarations
2844 CXXRecordDecl *const PrevDecl = nullptr;
2845 const bool DelayTypeCreation = true;
2846 D2CXX = CXXRecordDecl::Create(
2847 Importer.getToContext(), D->getTagKind(), DC, StartLoc, Loc,
2848 Name.getAsIdentifierInfo(), PrevDecl, DelayTypeCreation);
2849 Importer.getToContext().getTypeDeclType(
2850 D2CXX, llvm::dyn_cast<CXXRecordDecl>(DC));
2851 } else {
2852 D2CXX = CXXRecordDecl::Create(Importer.getToContext(),
2853 D->getTagKind(),
2854 DC, StartLoc, Loc,
2855 Name.getAsIdentifierInfo());
2856 }
2857 D2 = D2CXX;
2858 D2->setAccess(D->getAccess());
2859 } else {
2860 D2 = RecordDecl::Create(Importer.getToContext(), D->getTagKind(),
2861 DC, StartLoc, Loc, Name.getAsIdentifierInfo());
2862 }
2863
2864 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
2865 D2->setLexicalDeclContext(LexicalDC);
2866 LexicalDC->addDeclInternal(D2);
2867 if (D->isAnonymousStructOrUnion())
2868 D2->setAnonymousStructOrUnion(true);
2869 }
2870
2871 Importer.Imported(D, D2);
2872
2873 if (D->isCompleteDefinition() && ImportDefinition(D, D2, IDK_Default))
2874 return nullptr;
2875
2876 return D2;
2877 }
2878
VisitEnumConstantDecl(EnumConstantDecl * D)2879 Decl *ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) {
2880 // Import the major distinguishing characteristics of this enumerator.
2881 DeclContext *DC, *LexicalDC;
2882 DeclarationName Name;
2883 SourceLocation Loc;
2884 NamedDecl *ToD;
2885 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2886 return nullptr;
2887 if (ToD)
2888 return ToD;
2889
2890 QualType T = Importer.Import(D->getType());
2891 if (T.isNull())
2892 return nullptr;
2893
2894 // Determine whether there are any other declarations with the same name and
2895 // in the same context.
2896 if (!LexicalDC->isFunctionOrMethod()) {
2897 SmallVector<NamedDecl *, 4> ConflictingDecls;
2898 unsigned IDNS = Decl::IDNS_Ordinary;
2899 SmallVector<NamedDecl *, 2> FoundDecls;
2900 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
2901 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2902 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2903 continue;
2904
2905 if (EnumConstantDecl *FoundEnumConstant
2906 = dyn_cast<EnumConstantDecl>(FoundDecls[I])) {
2907 if (IsStructuralMatch(D, FoundEnumConstant))
2908 return Importer.Imported(D, FoundEnumConstant);
2909 }
2910
2911 ConflictingDecls.push_back(FoundDecls[I]);
2912 }
2913
2914 if (!ConflictingDecls.empty()) {
2915 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2916 ConflictingDecls.data(),
2917 ConflictingDecls.size());
2918 if (!Name)
2919 return nullptr;
2920 }
2921 }
2922
2923 Expr *Init = Importer.Import(D->getInitExpr());
2924 if (D->getInitExpr() && !Init)
2925 return nullptr;
2926
2927 EnumConstantDecl *ToEnumerator
2928 = EnumConstantDecl::Create(Importer.getToContext(), cast<EnumDecl>(DC), Loc,
2929 Name.getAsIdentifierInfo(), T,
2930 Init, D->getInitVal());
2931 ToEnumerator->setAccess(D->getAccess());
2932 ToEnumerator->setLexicalDeclContext(LexicalDC);
2933 Importer.Imported(D, ToEnumerator);
2934 LexicalDC->addDeclInternal(ToEnumerator);
2935 return ToEnumerator;
2936 }
2937
VisitFunctionDecl(FunctionDecl * D)2938 Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
2939 // Import the major distinguishing characteristics of this function.
2940 DeclContext *DC, *LexicalDC;
2941 DeclarationName Name;
2942 SourceLocation Loc;
2943 NamedDecl *ToD;
2944 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2945 return nullptr;
2946 if (ToD)
2947 return ToD;
2948
2949 // Try to find a function in our own ("to") context with the same name, same
2950 // type, and in the same context as the function we're importing.
2951 if (!LexicalDC->isFunctionOrMethod()) {
2952 SmallVector<NamedDecl *, 4> ConflictingDecls;
2953 unsigned IDNS = Decl::IDNS_Ordinary;
2954 SmallVector<NamedDecl *, 2> FoundDecls;
2955 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
2956 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
2957 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
2958 continue;
2959
2960 if (FunctionDecl *FoundFunction = dyn_cast<FunctionDecl>(FoundDecls[I])) {
2961 if (FoundFunction->hasExternalFormalLinkage() &&
2962 D->hasExternalFormalLinkage()) {
2963 if (Importer.IsStructurallyEquivalent(D->getType(),
2964 FoundFunction->getType())) {
2965 // FIXME: Actually try to merge the body and other attributes.
2966 return Importer.Imported(D, FoundFunction);
2967 }
2968
2969 // FIXME: Check for overloading more carefully, e.g., by boosting
2970 // Sema::IsOverload out to the AST library.
2971
2972 // Function overloading is okay in C++.
2973 if (Importer.getToContext().getLangOpts().CPlusPlus)
2974 continue;
2975
2976 // Complain about inconsistent function types.
2977 Importer.ToDiag(Loc, diag::err_odr_function_type_inconsistent)
2978 << Name << D->getType() << FoundFunction->getType();
2979 Importer.ToDiag(FoundFunction->getLocation(),
2980 diag::note_odr_value_here)
2981 << FoundFunction->getType();
2982 }
2983 }
2984
2985 ConflictingDecls.push_back(FoundDecls[I]);
2986 }
2987
2988 if (!ConflictingDecls.empty()) {
2989 Name = Importer.HandleNameConflict(Name, DC, IDNS,
2990 ConflictingDecls.data(),
2991 ConflictingDecls.size());
2992 if (!Name)
2993 return nullptr;
2994 }
2995 }
2996
2997 DeclarationNameInfo NameInfo(Name, Loc);
2998 // Import additional name location/type info.
2999 ImportDeclarationNameLoc(D->getNameInfo(), NameInfo);
3000
3001 QualType FromTy = D->getType();
3002 bool usedDifferentExceptionSpec = false;
3003
3004 if (const FunctionProtoType *
3005 FromFPT = D->getType()->getAs<FunctionProtoType>()) {
3006 FunctionProtoType::ExtProtoInfo FromEPI = FromFPT->getExtProtoInfo();
3007 // FunctionProtoType::ExtProtoInfo's ExceptionSpecDecl can point to the
3008 // FunctionDecl that we are importing the FunctionProtoType for.
3009 // To avoid an infinite recursion when importing, create the FunctionDecl
3010 // with a simplified function type and update it afterwards.
3011 if (FromEPI.ExceptionSpec.SourceDecl ||
3012 FromEPI.ExceptionSpec.SourceTemplate ||
3013 FromEPI.ExceptionSpec.NoexceptExpr) {
3014 FunctionProtoType::ExtProtoInfo DefaultEPI;
3015 FromTy = Importer.getFromContext().getFunctionType(
3016 FromFPT->getReturnType(), FromFPT->getParamTypes(), DefaultEPI);
3017 usedDifferentExceptionSpec = true;
3018 }
3019 }
3020
3021 // Import the type.
3022 QualType T = Importer.Import(FromTy);
3023 if (T.isNull())
3024 return nullptr;
3025
3026 // Import the function parameters.
3027 SmallVector<ParmVarDecl *, 8> Parameters;
3028 for (auto P : D->parameters()) {
3029 ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(P));
3030 if (!ToP)
3031 return nullptr;
3032
3033 Parameters.push_back(ToP);
3034 }
3035
3036 // Create the imported function.
3037 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3038 FunctionDecl *ToFunction = nullptr;
3039 SourceLocation InnerLocStart = Importer.Import(D->getInnerLocStart());
3040 if (CXXConstructorDecl *FromConstructor = dyn_cast<CXXConstructorDecl>(D)) {
3041 ToFunction = CXXConstructorDecl::Create(Importer.getToContext(),
3042 cast<CXXRecordDecl>(DC),
3043 InnerLocStart,
3044 NameInfo, T, TInfo,
3045 FromConstructor->isExplicit(),
3046 D->isInlineSpecified(),
3047 D->isImplicit(),
3048 D->isConstexpr());
3049 if (unsigned NumInitializers = FromConstructor->getNumCtorInitializers()) {
3050 SmallVector<CXXCtorInitializer *, 4> CtorInitializers;
3051 for (CXXCtorInitializer *I : FromConstructor->inits()) {
3052 CXXCtorInitializer *ToI =
3053 cast_or_null<CXXCtorInitializer>(Importer.Import(I));
3054 if (!ToI && I)
3055 return nullptr;
3056 CtorInitializers.push_back(ToI);
3057 }
3058 CXXCtorInitializer **Memory =
3059 new (Importer.getToContext()) CXXCtorInitializer *[NumInitializers];
3060 std::copy(CtorInitializers.begin(), CtorInitializers.end(), Memory);
3061 CXXConstructorDecl *ToCtor = llvm::cast<CXXConstructorDecl>(ToFunction);
3062 ToCtor->setCtorInitializers(Memory);
3063 ToCtor->setNumCtorInitializers(NumInitializers);
3064 }
3065 } else if (isa<CXXDestructorDecl>(D)) {
3066 ToFunction = CXXDestructorDecl::Create(Importer.getToContext(),
3067 cast<CXXRecordDecl>(DC),
3068 InnerLocStart,
3069 NameInfo, T, TInfo,
3070 D->isInlineSpecified(),
3071 D->isImplicit());
3072 } else if (CXXConversionDecl *FromConversion
3073 = dyn_cast<CXXConversionDecl>(D)) {
3074 ToFunction = CXXConversionDecl::Create(Importer.getToContext(),
3075 cast<CXXRecordDecl>(DC),
3076 InnerLocStart,
3077 NameInfo, T, TInfo,
3078 D->isInlineSpecified(),
3079 FromConversion->isExplicit(),
3080 D->isConstexpr(),
3081 Importer.Import(D->getLocEnd()));
3082 } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
3083 ToFunction = CXXMethodDecl::Create(Importer.getToContext(),
3084 cast<CXXRecordDecl>(DC),
3085 InnerLocStart,
3086 NameInfo, T, TInfo,
3087 Method->getStorageClass(),
3088 Method->isInlineSpecified(),
3089 D->isConstexpr(),
3090 Importer.Import(D->getLocEnd()));
3091 } else {
3092 ToFunction = FunctionDecl::Create(Importer.getToContext(), DC,
3093 InnerLocStart,
3094 NameInfo, T, TInfo, D->getStorageClass(),
3095 D->isInlineSpecified(),
3096 D->hasWrittenPrototype(),
3097 D->isConstexpr());
3098 }
3099
3100 // Import the qualifier, if any.
3101 ToFunction->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
3102 ToFunction->setAccess(D->getAccess());
3103 ToFunction->setLexicalDeclContext(LexicalDC);
3104 ToFunction->setVirtualAsWritten(D->isVirtualAsWritten());
3105 ToFunction->setTrivial(D->isTrivial());
3106 ToFunction->setPure(D->isPure());
3107 Importer.Imported(D, ToFunction);
3108
3109 // Set the parameters.
3110 for (unsigned I = 0, N = Parameters.size(); I != N; ++I) {
3111 Parameters[I]->setOwningFunction(ToFunction);
3112 ToFunction->addDeclInternal(Parameters[I]);
3113 }
3114 ToFunction->setParams(Parameters);
3115
3116 if (usedDifferentExceptionSpec) {
3117 // Update FunctionProtoType::ExtProtoInfo.
3118 QualType T = Importer.Import(D->getType());
3119 if (T.isNull())
3120 return nullptr;
3121 ToFunction->setType(T);
3122 }
3123
3124 // Import the body, if any.
3125 if (Stmt *FromBody = D->getBody()) {
3126 if (Stmt *ToBody = Importer.Import(FromBody)) {
3127 ToFunction->setBody(ToBody);
3128 }
3129 }
3130
3131 // FIXME: Other bits to merge?
3132
3133 // Add this function to the lexical context.
3134 LexicalDC->addDeclInternal(ToFunction);
3135
3136 return ToFunction;
3137 }
3138
VisitCXXMethodDecl(CXXMethodDecl * D)3139 Decl *ASTNodeImporter::VisitCXXMethodDecl(CXXMethodDecl *D) {
3140 return VisitFunctionDecl(D);
3141 }
3142
VisitCXXConstructorDecl(CXXConstructorDecl * D)3143 Decl *ASTNodeImporter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
3144 return VisitCXXMethodDecl(D);
3145 }
3146
VisitCXXDestructorDecl(CXXDestructorDecl * D)3147 Decl *ASTNodeImporter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
3148 return VisitCXXMethodDecl(D);
3149 }
3150
VisitCXXConversionDecl(CXXConversionDecl * D)3151 Decl *ASTNodeImporter::VisitCXXConversionDecl(CXXConversionDecl *D) {
3152 return VisitCXXMethodDecl(D);
3153 }
3154
getFieldIndex(Decl * F)3155 static unsigned getFieldIndex(Decl *F) {
3156 RecordDecl *Owner = dyn_cast<RecordDecl>(F->getDeclContext());
3157 if (!Owner)
3158 return 0;
3159
3160 unsigned Index = 1;
3161 for (const auto *D : Owner->noload_decls()) {
3162 if (D == F)
3163 return Index;
3164
3165 if (isa<FieldDecl>(*D) || isa<IndirectFieldDecl>(*D))
3166 ++Index;
3167 }
3168
3169 return Index;
3170 }
3171
VisitFieldDecl(FieldDecl * D)3172 Decl *ASTNodeImporter::VisitFieldDecl(FieldDecl *D) {
3173 // Import the major distinguishing characteristics of a variable.
3174 DeclContext *DC, *LexicalDC;
3175 DeclarationName Name;
3176 SourceLocation Loc;
3177 NamedDecl *ToD;
3178 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3179 return nullptr;
3180 if (ToD)
3181 return ToD;
3182
3183 // Determine whether we've already imported this field.
3184 SmallVector<NamedDecl *, 2> FoundDecls;
3185 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
3186 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3187 if (FieldDecl *FoundField = dyn_cast<FieldDecl>(FoundDecls[I])) {
3188 // For anonymous fields, match up by index.
3189 if (!Name && getFieldIndex(D) != getFieldIndex(FoundField))
3190 continue;
3191
3192 if (Importer.IsStructurallyEquivalent(D->getType(),
3193 FoundField->getType())) {
3194 Importer.Imported(D, FoundField);
3195 return FoundField;
3196 }
3197
3198 Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent)
3199 << Name << D->getType() << FoundField->getType();
3200 Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here)
3201 << FoundField->getType();
3202 return nullptr;
3203 }
3204 }
3205
3206 // Import the type.
3207 QualType T = Importer.Import(D->getType());
3208 if (T.isNull())
3209 return nullptr;
3210
3211 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3212 Expr *BitWidth = Importer.Import(D->getBitWidth());
3213 if (!BitWidth && D->getBitWidth())
3214 return nullptr;
3215
3216 FieldDecl *ToField = FieldDecl::Create(Importer.getToContext(), DC,
3217 Importer.Import(D->getInnerLocStart()),
3218 Loc, Name.getAsIdentifierInfo(),
3219 T, TInfo, BitWidth, D->isMutable(),
3220 D->getInClassInitStyle());
3221 ToField->setAccess(D->getAccess());
3222 ToField->setLexicalDeclContext(LexicalDC);
3223 if (Expr *FromInitializer = D->getInClassInitializer()) {
3224 Expr *ToInitializer = Importer.Import(FromInitializer);
3225 if (ToInitializer)
3226 ToField->setInClassInitializer(ToInitializer);
3227 else
3228 return nullptr;
3229 }
3230 ToField->setImplicit(D->isImplicit());
3231 Importer.Imported(D, ToField);
3232 LexicalDC->addDeclInternal(ToField);
3233 return ToField;
3234 }
3235
VisitIndirectFieldDecl(IndirectFieldDecl * D)3236 Decl *ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
3237 // Import the major distinguishing characteristics of a variable.
3238 DeclContext *DC, *LexicalDC;
3239 DeclarationName Name;
3240 SourceLocation Loc;
3241 NamedDecl *ToD;
3242 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3243 return nullptr;
3244 if (ToD)
3245 return ToD;
3246
3247 // Determine whether we've already imported this field.
3248 SmallVector<NamedDecl *, 2> FoundDecls;
3249 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
3250 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3251 if (IndirectFieldDecl *FoundField
3252 = dyn_cast<IndirectFieldDecl>(FoundDecls[I])) {
3253 // For anonymous indirect fields, match up by index.
3254 if (!Name && getFieldIndex(D) != getFieldIndex(FoundField))
3255 continue;
3256
3257 if (Importer.IsStructurallyEquivalent(D->getType(),
3258 FoundField->getType(),
3259 !Name.isEmpty())) {
3260 Importer.Imported(D, FoundField);
3261 return FoundField;
3262 }
3263
3264 // If there are more anonymous fields to check, continue.
3265 if (!Name && I < N-1)
3266 continue;
3267
3268 Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent)
3269 << Name << D->getType() << FoundField->getType();
3270 Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here)
3271 << FoundField->getType();
3272 return nullptr;
3273 }
3274 }
3275
3276 // Import the type.
3277 QualType T = Importer.Import(D->getType());
3278 if (T.isNull())
3279 return nullptr;
3280
3281 NamedDecl **NamedChain =
3282 new (Importer.getToContext())NamedDecl*[D->getChainingSize()];
3283
3284 unsigned i = 0;
3285 for (auto *PI : D->chain()) {
3286 Decl *D = Importer.Import(PI);
3287 if (!D)
3288 return nullptr;
3289 NamedChain[i++] = cast<NamedDecl>(D);
3290 }
3291
3292 IndirectFieldDecl *ToIndirectField = IndirectFieldDecl::Create(
3293 Importer.getToContext(), DC, Loc, Name.getAsIdentifierInfo(), T,
3294 {NamedChain, D->getChainingSize()});
3295
3296 for (const auto *Attr : D->attrs())
3297 ToIndirectField->addAttr(Attr->clone(Importer.getToContext()));
3298
3299 ToIndirectField->setAccess(D->getAccess());
3300 ToIndirectField->setLexicalDeclContext(LexicalDC);
3301 Importer.Imported(D, ToIndirectField);
3302 LexicalDC->addDeclInternal(ToIndirectField);
3303 return ToIndirectField;
3304 }
3305
VisitObjCIvarDecl(ObjCIvarDecl * D)3306 Decl *ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
3307 // Import the major distinguishing characteristics of an ivar.
3308 DeclContext *DC, *LexicalDC;
3309 DeclarationName Name;
3310 SourceLocation Loc;
3311 NamedDecl *ToD;
3312 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3313 return nullptr;
3314 if (ToD)
3315 return ToD;
3316
3317 // Determine whether we've already imported this ivar
3318 SmallVector<NamedDecl *, 2> FoundDecls;
3319 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
3320 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3321 if (ObjCIvarDecl *FoundIvar = dyn_cast<ObjCIvarDecl>(FoundDecls[I])) {
3322 if (Importer.IsStructurallyEquivalent(D->getType(),
3323 FoundIvar->getType())) {
3324 Importer.Imported(D, FoundIvar);
3325 return FoundIvar;
3326 }
3327
3328 Importer.ToDiag(Loc, diag::err_odr_ivar_type_inconsistent)
3329 << Name << D->getType() << FoundIvar->getType();
3330 Importer.ToDiag(FoundIvar->getLocation(), diag::note_odr_value_here)
3331 << FoundIvar->getType();
3332 return nullptr;
3333 }
3334 }
3335
3336 // Import the type.
3337 QualType T = Importer.Import(D->getType());
3338 if (T.isNull())
3339 return nullptr;
3340
3341 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3342 Expr *BitWidth = Importer.Import(D->getBitWidth());
3343 if (!BitWidth && D->getBitWidth())
3344 return nullptr;
3345
3346 ObjCIvarDecl *ToIvar = ObjCIvarDecl::Create(Importer.getToContext(),
3347 cast<ObjCContainerDecl>(DC),
3348 Importer.Import(D->getInnerLocStart()),
3349 Loc, Name.getAsIdentifierInfo(),
3350 T, TInfo, D->getAccessControl(),
3351 BitWidth, D->getSynthesize());
3352 ToIvar->setLexicalDeclContext(LexicalDC);
3353 Importer.Imported(D, ToIvar);
3354 LexicalDC->addDeclInternal(ToIvar);
3355 return ToIvar;
3356
3357 }
3358
VisitVarDecl(VarDecl * D)3359 Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) {
3360 // Import the major distinguishing characteristics of a variable.
3361 DeclContext *DC, *LexicalDC;
3362 DeclarationName Name;
3363 SourceLocation Loc;
3364 NamedDecl *ToD;
3365 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3366 return nullptr;
3367 if (ToD)
3368 return ToD;
3369
3370 // Try to find a variable in our own ("to") context with the same name and
3371 // in the same context as the variable we're importing.
3372 if (D->isFileVarDecl()) {
3373 VarDecl *MergeWithVar = nullptr;
3374 SmallVector<NamedDecl *, 4> ConflictingDecls;
3375 unsigned IDNS = Decl::IDNS_Ordinary;
3376 SmallVector<NamedDecl *, 2> FoundDecls;
3377 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
3378 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3379 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS))
3380 continue;
3381
3382 if (VarDecl *FoundVar = dyn_cast<VarDecl>(FoundDecls[I])) {
3383 // We have found a variable that we may need to merge with. Check it.
3384 if (FoundVar->hasExternalFormalLinkage() &&
3385 D->hasExternalFormalLinkage()) {
3386 if (Importer.IsStructurallyEquivalent(D->getType(),
3387 FoundVar->getType())) {
3388 MergeWithVar = FoundVar;
3389 break;
3390 }
3391
3392 const ArrayType *FoundArray
3393 = Importer.getToContext().getAsArrayType(FoundVar->getType());
3394 const ArrayType *TArray
3395 = Importer.getToContext().getAsArrayType(D->getType());
3396 if (FoundArray && TArray) {
3397 if (isa<IncompleteArrayType>(FoundArray) &&
3398 isa<ConstantArrayType>(TArray)) {
3399 // Import the type.
3400 QualType T = Importer.Import(D->getType());
3401 if (T.isNull())
3402 return nullptr;
3403
3404 FoundVar->setType(T);
3405 MergeWithVar = FoundVar;
3406 break;
3407 } else if (isa<IncompleteArrayType>(TArray) &&
3408 isa<ConstantArrayType>(FoundArray)) {
3409 MergeWithVar = FoundVar;
3410 break;
3411 }
3412 }
3413
3414 Importer.ToDiag(Loc, diag::err_odr_variable_type_inconsistent)
3415 << Name << D->getType() << FoundVar->getType();
3416 Importer.ToDiag(FoundVar->getLocation(), diag::note_odr_value_here)
3417 << FoundVar->getType();
3418 }
3419 }
3420
3421 ConflictingDecls.push_back(FoundDecls[I]);
3422 }
3423
3424 if (MergeWithVar) {
3425 // An equivalent variable with external linkage has been found. Link
3426 // the two declarations, then merge them.
3427 Importer.Imported(D, MergeWithVar);
3428
3429 if (VarDecl *DDef = D->getDefinition()) {
3430 if (VarDecl *ExistingDef = MergeWithVar->getDefinition()) {
3431 Importer.ToDiag(ExistingDef->getLocation(),
3432 diag::err_odr_variable_multiple_def)
3433 << Name;
3434 Importer.FromDiag(DDef->getLocation(), diag::note_odr_defined_here);
3435 } else {
3436 Expr *Init = Importer.Import(DDef->getInit());
3437 MergeWithVar->setInit(Init);
3438 if (DDef->isInitKnownICE()) {
3439 EvaluatedStmt *Eval = MergeWithVar->ensureEvaluatedStmt();
3440 Eval->CheckedICE = true;
3441 Eval->IsICE = DDef->isInitICE();
3442 }
3443 }
3444 }
3445
3446 return MergeWithVar;
3447 }
3448
3449 if (!ConflictingDecls.empty()) {
3450 Name = Importer.HandleNameConflict(Name, DC, IDNS,
3451 ConflictingDecls.data(),
3452 ConflictingDecls.size());
3453 if (!Name)
3454 return nullptr;
3455 }
3456 }
3457
3458 // Import the type.
3459 QualType T = Importer.Import(D->getType());
3460 if (T.isNull())
3461 return nullptr;
3462
3463 // Create the imported variable.
3464 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3465 VarDecl *ToVar = VarDecl::Create(Importer.getToContext(), DC,
3466 Importer.Import(D->getInnerLocStart()),
3467 Loc, Name.getAsIdentifierInfo(),
3468 T, TInfo,
3469 D->getStorageClass());
3470 ToVar->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
3471 ToVar->setAccess(D->getAccess());
3472 ToVar->setLexicalDeclContext(LexicalDC);
3473 Importer.Imported(D, ToVar);
3474 LexicalDC->addDeclInternal(ToVar);
3475
3476 if (!D->isFileVarDecl() &&
3477 D->isUsed())
3478 ToVar->setIsUsed();
3479
3480 // Merge the initializer.
3481 if (ImportDefinition(D, ToVar))
3482 return nullptr;
3483
3484 return ToVar;
3485 }
3486
VisitImplicitParamDecl(ImplicitParamDecl * D)3487 Decl *ASTNodeImporter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
3488 // Parameters are created in the translation unit's context, then moved
3489 // into the function declaration's context afterward.
3490 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
3491
3492 // Import the name of this declaration.
3493 DeclarationName Name = Importer.Import(D->getDeclName());
3494 if (D->getDeclName() && !Name)
3495 return nullptr;
3496
3497 // Import the location of this declaration.
3498 SourceLocation Loc = Importer.Import(D->getLocation());
3499
3500 // Import the parameter's type.
3501 QualType T = Importer.Import(D->getType());
3502 if (T.isNull())
3503 return nullptr;
3504
3505 // Create the imported parameter.
3506 ImplicitParamDecl *ToParm
3507 = ImplicitParamDecl::Create(Importer.getToContext(), DC,
3508 Loc, Name.getAsIdentifierInfo(),
3509 T);
3510 return Importer.Imported(D, ToParm);
3511 }
3512
VisitParmVarDecl(ParmVarDecl * D)3513 Decl *ASTNodeImporter::VisitParmVarDecl(ParmVarDecl *D) {
3514 // Parameters are created in the translation unit's context, then moved
3515 // into the function declaration's context afterward.
3516 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
3517
3518 // Import the name of this declaration.
3519 DeclarationName Name = Importer.Import(D->getDeclName());
3520 if (D->getDeclName() && !Name)
3521 return nullptr;
3522
3523 // Import the location of this declaration.
3524 SourceLocation Loc = Importer.Import(D->getLocation());
3525
3526 // Import the parameter's type.
3527 QualType T = Importer.Import(D->getType());
3528 if (T.isNull())
3529 return nullptr;
3530
3531 // Create the imported parameter.
3532 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
3533 ParmVarDecl *ToParm = ParmVarDecl::Create(Importer.getToContext(), DC,
3534 Importer.Import(D->getInnerLocStart()),
3535 Loc, Name.getAsIdentifierInfo(),
3536 T, TInfo, D->getStorageClass(),
3537 /*FIXME: Default argument*/nullptr);
3538 ToParm->setHasInheritedDefaultArg(D->hasInheritedDefaultArg());
3539
3540 if (D->isUsed())
3541 ToParm->setIsUsed();
3542
3543 return Importer.Imported(D, ToParm);
3544 }
3545
VisitObjCMethodDecl(ObjCMethodDecl * D)3546 Decl *ASTNodeImporter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
3547 // Import the major distinguishing characteristics of a method.
3548 DeclContext *DC, *LexicalDC;
3549 DeclarationName Name;
3550 SourceLocation Loc;
3551 NamedDecl *ToD;
3552 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3553 return nullptr;
3554 if (ToD)
3555 return ToD;
3556
3557 SmallVector<NamedDecl *, 2> FoundDecls;
3558 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
3559 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3560 if (ObjCMethodDecl *FoundMethod = dyn_cast<ObjCMethodDecl>(FoundDecls[I])) {
3561 if (FoundMethod->isInstanceMethod() != D->isInstanceMethod())
3562 continue;
3563
3564 // Check return types.
3565 if (!Importer.IsStructurallyEquivalent(D->getReturnType(),
3566 FoundMethod->getReturnType())) {
3567 Importer.ToDiag(Loc, diag::err_odr_objc_method_result_type_inconsistent)
3568 << D->isInstanceMethod() << Name << D->getReturnType()
3569 << FoundMethod->getReturnType();
3570 Importer.ToDiag(FoundMethod->getLocation(),
3571 diag::note_odr_objc_method_here)
3572 << D->isInstanceMethod() << Name;
3573 return nullptr;
3574 }
3575
3576 // Check the number of parameters.
3577 if (D->param_size() != FoundMethod->param_size()) {
3578 Importer.ToDiag(Loc, diag::err_odr_objc_method_num_params_inconsistent)
3579 << D->isInstanceMethod() << Name
3580 << D->param_size() << FoundMethod->param_size();
3581 Importer.ToDiag(FoundMethod->getLocation(),
3582 diag::note_odr_objc_method_here)
3583 << D->isInstanceMethod() << Name;
3584 return nullptr;
3585 }
3586
3587 // Check parameter types.
3588 for (ObjCMethodDecl::param_iterator P = D->param_begin(),
3589 PEnd = D->param_end(), FoundP = FoundMethod->param_begin();
3590 P != PEnd; ++P, ++FoundP) {
3591 if (!Importer.IsStructurallyEquivalent((*P)->getType(),
3592 (*FoundP)->getType())) {
3593 Importer.FromDiag((*P)->getLocation(),
3594 diag::err_odr_objc_method_param_type_inconsistent)
3595 << D->isInstanceMethod() << Name
3596 << (*P)->getType() << (*FoundP)->getType();
3597 Importer.ToDiag((*FoundP)->getLocation(), diag::note_odr_value_here)
3598 << (*FoundP)->getType();
3599 return nullptr;
3600 }
3601 }
3602
3603 // Check variadic/non-variadic.
3604 // Check the number of parameters.
3605 if (D->isVariadic() != FoundMethod->isVariadic()) {
3606 Importer.ToDiag(Loc, diag::err_odr_objc_method_variadic_inconsistent)
3607 << D->isInstanceMethod() << Name;
3608 Importer.ToDiag(FoundMethod->getLocation(),
3609 diag::note_odr_objc_method_here)
3610 << D->isInstanceMethod() << Name;
3611 return nullptr;
3612 }
3613
3614 // FIXME: Any other bits we need to merge?
3615 return Importer.Imported(D, FoundMethod);
3616 }
3617 }
3618
3619 // Import the result type.
3620 QualType ResultTy = Importer.Import(D->getReturnType());
3621 if (ResultTy.isNull())
3622 return nullptr;
3623
3624 TypeSourceInfo *ReturnTInfo = Importer.Import(D->getReturnTypeSourceInfo());
3625
3626 ObjCMethodDecl *ToMethod = ObjCMethodDecl::Create(
3627 Importer.getToContext(), Loc, Importer.Import(D->getLocEnd()),
3628 Name.getObjCSelector(), ResultTy, ReturnTInfo, DC, D->isInstanceMethod(),
3629 D->isVariadic(), D->isPropertyAccessor(), D->isImplicit(), D->isDefined(),
3630 D->getImplementationControl(), D->hasRelatedResultType());
3631
3632 // FIXME: When we decide to merge method definitions, we'll need to
3633 // deal with implicit parameters.
3634
3635 // Import the parameters
3636 SmallVector<ParmVarDecl *, 5> ToParams;
3637 for (auto *FromP : D->parameters()) {
3638 ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(FromP));
3639 if (!ToP)
3640 return nullptr;
3641
3642 ToParams.push_back(ToP);
3643 }
3644
3645 // Set the parameters.
3646 for (unsigned I = 0, N = ToParams.size(); I != N; ++I) {
3647 ToParams[I]->setOwningFunction(ToMethod);
3648 ToMethod->addDeclInternal(ToParams[I]);
3649 }
3650 SmallVector<SourceLocation, 12> SelLocs;
3651 D->getSelectorLocs(SelLocs);
3652 ToMethod->setMethodParams(Importer.getToContext(), ToParams, SelLocs);
3653
3654 ToMethod->setLexicalDeclContext(LexicalDC);
3655 Importer.Imported(D, ToMethod);
3656 LexicalDC->addDeclInternal(ToMethod);
3657 return ToMethod;
3658 }
3659
VisitObjCTypeParamDecl(ObjCTypeParamDecl * D)3660 Decl *ASTNodeImporter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
3661 // Import the major distinguishing characteristics of a category.
3662 DeclContext *DC, *LexicalDC;
3663 DeclarationName Name;
3664 SourceLocation Loc;
3665 NamedDecl *ToD;
3666 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3667 return nullptr;
3668 if (ToD)
3669 return ToD;
3670
3671 TypeSourceInfo *BoundInfo = Importer.Import(D->getTypeSourceInfo());
3672 if (!BoundInfo)
3673 return nullptr;
3674
3675 ObjCTypeParamDecl *Result = ObjCTypeParamDecl::Create(
3676 Importer.getToContext(), DC,
3677 D->getVariance(),
3678 Importer.Import(D->getVarianceLoc()),
3679 D->getIndex(),
3680 Importer.Import(D->getLocation()),
3681 Name.getAsIdentifierInfo(),
3682 Importer.Import(D->getColonLoc()),
3683 BoundInfo);
3684 Importer.Imported(D, Result);
3685 Result->setLexicalDeclContext(LexicalDC);
3686 return Result;
3687 }
3688
VisitObjCCategoryDecl(ObjCCategoryDecl * D)3689 Decl *ASTNodeImporter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
3690 // Import the major distinguishing characteristics of a category.
3691 DeclContext *DC, *LexicalDC;
3692 DeclarationName Name;
3693 SourceLocation Loc;
3694 NamedDecl *ToD;
3695 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3696 return nullptr;
3697 if (ToD)
3698 return ToD;
3699
3700 ObjCInterfaceDecl *ToInterface
3701 = cast_or_null<ObjCInterfaceDecl>(Importer.Import(D->getClassInterface()));
3702 if (!ToInterface)
3703 return nullptr;
3704
3705 // Determine if we've already encountered this category.
3706 ObjCCategoryDecl *MergeWithCategory
3707 = ToInterface->FindCategoryDeclaration(Name.getAsIdentifierInfo());
3708 ObjCCategoryDecl *ToCategory = MergeWithCategory;
3709 if (!ToCategory) {
3710 ToCategory = ObjCCategoryDecl::Create(Importer.getToContext(), DC,
3711 Importer.Import(D->getAtStartLoc()),
3712 Loc,
3713 Importer.Import(D->getCategoryNameLoc()),
3714 Name.getAsIdentifierInfo(),
3715 ToInterface,
3716 /*TypeParamList=*/nullptr,
3717 Importer.Import(D->getIvarLBraceLoc()),
3718 Importer.Import(D->getIvarRBraceLoc()));
3719 ToCategory->setLexicalDeclContext(LexicalDC);
3720 LexicalDC->addDeclInternal(ToCategory);
3721 Importer.Imported(D, ToCategory);
3722 // Import the type parameter list after calling Imported, to avoid
3723 // loops when bringing in their DeclContext.
3724 ToCategory->setTypeParamList(ImportObjCTypeParamList(
3725 D->getTypeParamList()));
3726
3727 // Import protocols
3728 SmallVector<ObjCProtocolDecl *, 4> Protocols;
3729 SmallVector<SourceLocation, 4> ProtocolLocs;
3730 ObjCCategoryDecl::protocol_loc_iterator FromProtoLoc
3731 = D->protocol_loc_begin();
3732 for (ObjCCategoryDecl::protocol_iterator FromProto = D->protocol_begin(),
3733 FromProtoEnd = D->protocol_end();
3734 FromProto != FromProtoEnd;
3735 ++FromProto, ++FromProtoLoc) {
3736 ObjCProtocolDecl *ToProto
3737 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto));
3738 if (!ToProto)
3739 return nullptr;
3740 Protocols.push_back(ToProto);
3741 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc));
3742 }
3743
3744 // FIXME: If we're merging, make sure that the protocol list is the same.
3745 ToCategory->setProtocolList(Protocols.data(), Protocols.size(),
3746 ProtocolLocs.data(), Importer.getToContext());
3747
3748 } else {
3749 Importer.Imported(D, ToCategory);
3750 }
3751
3752 // Import all of the members of this category.
3753 ImportDeclContext(D);
3754
3755 // If we have an implementation, import it as well.
3756 if (D->getImplementation()) {
3757 ObjCCategoryImplDecl *Impl
3758 = cast_or_null<ObjCCategoryImplDecl>(
3759 Importer.Import(D->getImplementation()));
3760 if (!Impl)
3761 return nullptr;
3762
3763 ToCategory->setImplementation(Impl);
3764 }
3765
3766 return ToCategory;
3767 }
3768
ImportDefinition(ObjCProtocolDecl * From,ObjCProtocolDecl * To,ImportDefinitionKind Kind)3769 bool ASTNodeImporter::ImportDefinition(ObjCProtocolDecl *From,
3770 ObjCProtocolDecl *To,
3771 ImportDefinitionKind Kind) {
3772 if (To->getDefinition()) {
3773 if (shouldForceImportDeclContext(Kind))
3774 ImportDeclContext(From);
3775 return false;
3776 }
3777
3778 // Start the protocol definition
3779 To->startDefinition();
3780
3781 // Import protocols
3782 SmallVector<ObjCProtocolDecl *, 4> Protocols;
3783 SmallVector<SourceLocation, 4> ProtocolLocs;
3784 ObjCProtocolDecl::protocol_loc_iterator
3785 FromProtoLoc = From->protocol_loc_begin();
3786 for (ObjCProtocolDecl::protocol_iterator FromProto = From->protocol_begin(),
3787 FromProtoEnd = From->protocol_end();
3788 FromProto != FromProtoEnd;
3789 ++FromProto, ++FromProtoLoc) {
3790 ObjCProtocolDecl *ToProto
3791 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto));
3792 if (!ToProto)
3793 return true;
3794 Protocols.push_back(ToProto);
3795 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc));
3796 }
3797
3798 // FIXME: If we're merging, make sure that the protocol list is the same.
3799 To->setProtocolList(Protocols.data(), Protocols.size(),
3800 ProtocolLocs.data(), Importer.getToContext());
3801
3802 if (shouldForceImportDeclContext(Kind)) {
3803 // Import all of the members of this protocol.
3804 ImportDeclContext(From, /*ForceImport=*/true);
3805 }
3806 return false;
3807 }
3808
VisitObjCProtocolDecl(ObjCProtocolDecl * D)3809 Decl *ASTNodeImporter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
3810 // If this protocol has a definition in the translation unit we're coming
3811 // from, but this particular declaration is not that definition, import the
3812 // definition and map to that.
3813 ObjCProtocolDecl *Definition = D->getDefinition();
3814 if (Definition && Definition != D) {
3815 Decl *ImportedDef = Importer.Import(Definition);
3816 if (!ImportedDef)
3817 return nullptr;
3818
3819 return Importer.Imported(D, ImportedDef);
3820 }
3821
3822 // Import the major distinguishing characteristics of a protocol.
3823 DeclContext *DC, *LexicalDC;
3824 DeclarationName Name;
3825 SourceLocation Loc;
3826 NamedDecl *ToD;
3827 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3828 return nullptr;
3829 if (ToD)
3830 return ToD;
3831
3832 ObjCProtocolDecl *MergeWithProtocol = nullptr;
3833 SmallVector<NamedDecl *, 2> FoundDecls;
3834 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
3835 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
3836 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_ObjCProtocol))
3837 continue;
3838
3839 if ((MergeWithProtocol = dyn_cast<ObjCProtocolDecl>(FoundDecls[I])))
3840 break;
3841 }
3842
3843 ObjCProtocolDecl *ToProto = MergeWithProtocol;
3844 if (!ToProto) {
3845 ToProto = ObjCProtocolDecl::Create(Importer.getToContext(), DC,
3846 Name.getAsIdentifierInfo(), Loc,
3847 Importer.Import(D->getAtStartLoc()),
3848 /*PrevDecl=*/nullptr);
3849 ToProto->setLexicalDeclContext(LexicalDC);
3850 LexicalDC->addDeclInternal(ToProto);
3851 }
3852
3853 Importer.Imported(D, ToProto);
3854
3855 if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToProto))
3856 return nullptr;
3857
3858 return ToProto;
3859 }
3860
VisitLinkageSpecDecl(LinkageSpecDecl * D)3861 Decl *ASTNodeImporter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
3862 DeclContext *DC = Importer.ImportContext(D->getDeclContext());
3863 DeclContext *LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
3864
3865 SourceLocation ExternLoc = Importer.Import(D->getExternLoc());
3866 SourceLocation LangLoc = Importer.Import(D->getLocation());
3867
3868 bool HasBraces = D->hasBraces();
3869
3870 LinkageSpecDecl *ToLinkageSpec =
3871 LinkageSpecDecl::Create(Importer.getToContext(),
3872 DC,
3873 ExternLoc,
3874 LangLoc,
3875 D->getLanguage(),
3876 HasBraces);
3877
3878 if (HasBraces) {
3879 SourceLocation RBraceLoc = Importer.Import(D->getRBraceLoc());
3880 ToLinkageSpec->setRBraceLoc(RBraceLoc);
3881 }
3882
3883 ToLinkageSpec->setLexicalDeclContext(LexicalDC);
3884 LexicalDC->addDeclInternal(ToLinkageSpec);
3885
3886 Importer.Imported(D, ToLinkageSpec);
3887
3888 return ToLinkageSpec;
3889 }
3890
ImportDefinition(ObjCInterfaceDecl * From,ObjCInterfaceDecl * To,ImportDefinitionKind Kind)3891 bool ASTNodeImporter::ImportDefinition(ObjCInterfaceDecl *From,
3892 ObjCInterfaceDecl *To,
3893 ImportDefinitionKind Kind) {
3894 if (To->getDefinition()) {
3895 // Check consistency of superclass.
3896 ObjCInterfaceDecl *FromSuper = From->getSuperClass();
3897 if (FromSuper) {
3898 FromSuper = cast_or_null<ObjCInterfaceDecl>(Importer.Import(FromSuper));
3899 if (!FromSuper)
3900 return true;
3901 }
3902
3903 ObjCInterfaceDecl *ToSuper = To->getSuperClass();
3904 if ((bool)FromSuper != (bool)ToSuper ||
3905 (FromSuper && !declaresSameEntity(FromSuper, ToSuper))) {
3906 Importer.ToDiag(To->getLocation(),
3907 diag::err_odr_objc_superclass_inconsistent)
3908 << To->getDeclName();
3909 if (ToSuper)
3910 Importer.ToDiag(To->getSuperClassLoc(), diag::note_odr_objc_superclass)
3911 << To->getSuperClass()->getDeclName();
3912 else
3913 Importer.ToDiag(To->getLocation(),
3914 diag::note_odr_objc_missing_superclass);
3915 if (From->getSuperClass())
3916 Importer.FromDiag(From->getSuperClassLoc(),
3917 diag::note_odr_objc_superclass)
3918 << From->getSuperClass()->getDeclName();
3919 else
3920 Importer.FromDiag(From->getLocation(),
3921 diag::note_odr_objc_missing_superclass);
3922 }
3923
3924 if (shouldForceImportDeclContext(Kind))
3925 ImportDeclContext(From);
3926 return false;
3927 }
3928
3929 // Start the definition.
3930 To->startDefinition();
3931
3932 // If this class has a superclass, import it.
3933 if (From->getSuperClass()) {
3934 TypeSourceInfo *SuperTInfo = Importer.Import(From->getSuperClassTInfo());
3935 if (!SuperTInfo)
3936 return true;
3937
3938 To->setSuperClass(SuperTInfo);
3939 }
3940
3941 // Import protocols
3942 SmallVector<ObjCProtocolDecl *, 4> Protocols;
3943 SmallVector<SourceLocation, 4> ProtocolLocs;
3944 ObjCInterfaceDecl::protocol_loc_iterator
3945 FromProtoLoc = From->protocol_loc_begin();
3946
3947 for (ObjCInterfaceDecl::protocol_iterator FromProto = From->protocol_begin(),
3948 FromProtoEnd = From->protocol_end();
3949 FromProto != FromProtoEnd;
3950 ++FromProto, ++FromProtoLoc) {
3951 ObjCProtocolDecl *ToProto
3952 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto));
3953 if (!ToProto)
3954 return true;
3955 Protocols.push_back(ToProto);
3956 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc));
3957 }
3958
3959 // FIXME: If we're merging, make sure that the protocol list is the same.
3960 To->setProtocolList(Protocols.data(), Protocols.size(),
3961 ProtocolLocs.data(), Importer.getToContext());
3962
3963 // Import categories. When the categories themselves are imported, they'll
3964 // hook themselves into this interface.
3965 for (auto *Cat : From->known_categories())
3966 Importer.Import(Cat);
3967
3968 // If we have an @implementation, import it as well.
3969 if (From->getImplementation()) {
3970 ObjCImplementationDecl *Impl = cast_or_null<ObjCImplementationDecl>(
3971 Importer.Import(From->getImplementation()));
3972 if (!Impl)
3973 return true;
3974
3975 To->setImplementation(Impl);
3976 }
3977
3978 if (shouldForceImportDeclContext(Kind)) {
3979 // Import all of the members of this class.
3980 ImportDeclContext(From, /*ForceImport=*/true);
3981 }
3982 return false;
3983 }
3984
3985 ObjCTypeParamList *
ImportObjCTypeParamList(ObjCTypeParamList * list)3986 ASTNodeImporter::ImportObjCTypeParamList(ObjCTypeParamList *list) {
3987 if (!list)
3988 return nullptr;
3989
3990 SmallVector<ObjCTypeParamDecl *, 4> toTypeParams;
3991 for (auto fromTypeParam : *list) {
3992 auto toTypeParam = cast_or_null<ObjCTypeParamDecl>(
3993 Importer.Import(fromTypeParam));
3994 if (!toTypeParam)
3995 return nullptr;
3996
3997 toTypeParams.push_back(toTypeParam);
3998 }
3999
4000 return ObjCTypeParamList::create(Importer.getToContext(),
4001 Importer.Import(list->getLAngleLoc()),
4002 toTypeParams,
4003 Importer.Import(list->getRAngleLoc()));
4004 }
4005
VisitObjCInterfaceDecl(ObjCInterfaceDecl * D)4006 Decl *ASTNodeImporter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
4007 // If this class has a definition in the translation unit we're coming from,
4008 // but this particular declaration is not that definition, import the
4009 // definition and map to that.
4010 ObjCInterfaceDecl *Definition = D->getDefinition();
4011 if (Definition && Definition != D) {
4012 Decl *ImportedDef = Importer.Import(Definition);
4013 if (!ImportedDef)
4014 return nullptr;
4015
4016 return Importer.Imported(D, ImportedDef);
4017 }
4018
4019 // Import the major distinguishing characteristics of an @interface.
4020 DeclContext *DC, *LexicalDC;
4021 DeclarationName Name;
4022 SourceLocation Loc;
4023 NamedDecl *ToD;
4024 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4025 return nullptr;
4026 if (ToD)
4027 return ToD;
4028
4029 // Look for an existing interface with the same name.
4030 ObjCInterfaceDecl *MergeWithIface = nullptr;
4031 SmallVector<NamedDecl *, 2> FoundDecls;
4032 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
4033 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4034 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
4035 continue;
4036
4037 if ((MergeWithIface = dyn_cast<ObjCInterfaceDecl>(FoundDecls[I])))
4038 break;
4039 }
4040
4041 // Create an interface declaration, if one does not already exist.
4042 ObjCInterfaceDecl *ToIface = MergeWithIface;
4043 if (!ToIface) {
4044 ToIface = ObjCInterfaceDecl::Create(Importer.getToContext(), DC,
4045 Importer.Import(D->getAtStartLoc()),
4046 Name.getAsIdentifierInfo(),
4047 /*TypeParamList=*/nullptr,
4048 /*PrevDecl=*/nullptr, Loc,
4049 D->isImplicitInterfaceDecl());
4050 ToIface->setLexicalDeclContext(LexicalDC);
4051 LexicalDC->addDeclInternal(ToIface);
4052 }
4053 Importer.Imported(D, ToIface);
4054 // Import the type parameter list after calling Imported, to avoid
4055 // loops when bringing in their DeclContext.
4056 ToIface->setTypeParamList(ImportObjCTypeParamList(
4057 D->getTypeParamListAsWritten()));
4058
4059 if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToIface))
4060 return nullptr;
4061
4062 return ToIface;
4063 }
4064
VisitObjCCategoryImplDecl(ObjCCategoryImplDecl * D)4065 Decl *ASTNodeImporter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
4066 ObjCCategoryDecl *Category = cast_or_null<ObjCCategoryDecl>(
4067 Importer.Import(D->getCategoryDecl()));
4068 if (!Category)
4069 return nullptr;
4070
4071 ObjCCategoryImplDecl *ToImpl = Category->getImplementation();
4072 if (!ToImpl) {
4073 DeclContext *DC = Importer.ImportContext(D->getDeclContext());
4074 if (!DC)
4075 return nullptr;
4076
4077 SourceLocation CategoryNameLoc = Importer.Import(D->getCategoryNameLoc());
4078 ToImpl = ObjCCategoryImplDecl::Create(Importer.getToContext(), DC,
4079 Importer.Import(D->getIdentifier()),
4080 Category->getClassInterface(),
4081 Importer.Import(D->getLocation()),
4082 Importer.Import(D->getAtStartLoc()),
4083 CategoryNameLoc);
4084
4085 DeclContext *LexicalDC = DC;
4086 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4087 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4088 if (!LexicalDC)
4089 return nullptr;
4090
4091 ToImpl->setLexicalDeclContext(LexicalDC);
4092 }
4093
4094 LexicalDC->addDeclInternal(ToImpl);
4095 Category->setImplementation(ToImpl);
4096 }
4097
4098 Importer.Imported(D, ToImpl);
4099 ImportDeclContext(D);
4100 return ToImpl;
4101 }
4102
VisitObjCImplementationDecl(ObjCImplementationDecl * D)4103 Decl *ASTNodeImporter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
4104 // Find the corresponding interface.
4105 ObjCInterfaceDecl *Iface = cast_or_null<ObjCInterfaceDecl>(
4106 Importer.Import(D->getClassInterface()));
4107 if (!Iface)
4108 return nullptr;
4109
4110 // Import the superclass, if any.
4111 ObjCInterfaceDecl *Super = nullptr;
4112 if (D->getSuperClass()) {
4113 Super = cast_or_null<ObjCInterfaceDecl>(
4114 Importer.Import(D->getSuperClass()));
4115 if (!Super)
4116 return nullptr;
4117 }
4118
4119 ObjCImplementationDecl *Impl = Iface->getImplementation();
4120 if (!Impl) {
4121 // We haven't imported an implementation yet. Create a new @implementation
4122 // now.
4123 Impl = ObjCImplementationDecl::Create(Importer.getToContext(),
4124 Importer.ImportContext(D->getDeclContext()),
4125 Iface, Super,
4126 Importer.Import(D->getLocation()),
4127 Importer.Import(D->getAtStartLoc()),
4128 Importer.Import(D->getSuperClassLoc()),
4129 Importer.Import(D->getIvarLBraceLoc()),
4130 Importer.Import(D->getIvarRBraceLoc()));
4131
4132 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4133 DeclContext *LexicalDC
4134 = Importer.ImportContext(D->getLexicalDeclContext());
4135 if (!LexicalDC)
4136 return nullptr;
4137 Impl->setLexicalDeclContext(LexicalDC);
4138 }
4139
4140 // Associate the implementation with the class it implements.
4141 Iface->setImplementation(Impl);
4142 Importer.Imported(D, Iface->getImplementation());
4143 } else {
4144 Importer.Imported(D, Iface->getImplementation());
4145
4146 // Verify that the existing @implementation has the same superclass.
4147 if ((Super && !Impl->getSuperClass()) ||
4148 (!Super && Impl->getSuperClass()) ||
4149 (Super && Impl->getSuperClass() &&
4150 !declaresSameEntity(Super->getCanonicalDecl(),
4151 Impl->getSuperClass()))) {
4152 Importer.ToDiag(Impl->getLocation(),
4153 diag::err_odr_objc_superclass_inconsistent)
4154 << Iface->getDeclName();
4155 // FIXME: It would be nice to have the location of the superclass
4156 // below.
4157 if (Impl->getSuperClass())
4158 Importer.ToDiag(Impl->getLocation(),
4159 diag::note_odr_objc_superclass)
4160 << Impl->getSuperClass()->getDeclName();
4161 else
4162 Importer.ToDiag(Impl->getLocation(),
4163 diag::note_odr_objc_missing_superclass);
4164 if (D->getSuperClass())
4165 Importer.FromDiag(D->getLocation(),
4166 diag::note_odr_objc_superclass)
4167 << D->getSuperClass()->getDeclName();
4168 else
4169 Importer.FromDiag(D->getLocation(),
4170 diag::note_odr_objc_missing_superclass);
4171 return nullptr;
4172 }
4173 }
4174
4175 // Import all of the members of this @implementation.
4176 ImportDeclContext(D);
4177
4178 return Impl;
4179 }
4180
VisitObjCPropertyDecl(ObjCPropertyDecl * D)4181 Decl *ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
4182 // Import the major distinguishing characteristics of an @property.
4183 DeclContext *DC, *LexicalDC;
4184 DeclarationName Name;
4185 SourceLocation Loc;
4186 NamedDecl *ToD;
4187 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4188 return nullptr;
4189 if (ToD)
4190 return ToD;
4191
4192 // Check whether we have already imported this property.
4193 SmallVector<NamedDecl *, 2> FoundDecls;
4194 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
4195 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4196 if (ObjCPropertyDecl *FoundProp
4197 = dyn_cast<ObjCPropertyDecl>(FoundDecls[I])) {
4198 // Check property types.
4199 if (!Importer.IsStructurallyEquivalent(D->getType(),
4200 FoundProp->getType())) {
4201 Importer.ToDiag(Loc, diag::err_odr_objc_property_type_inconsistent)
4202 << Name << D->getType() << FoundProp->getType();
4203 Importer.ToDiag(FoundProp->getLocation(), diag::note_odr_value_here)
4204 << FoundProp->getType();
4205 return nullptr;
4206 }
4207
4208 // FIXME: Check property attributes, getters, setters, etc.?
4209
4210 // Consider these properties to be equivalent.
4211 Importer.Imported(D, FoundProp);
4212 return FoundProp;
4213 }
4214 }
4215
4216 // Import the type.
4217 TypeSourceInfo *TSI = Importer.Import(D->getTypeSourceInfo());
4218 if (!TSI)
4219 return nullptr;
4220
4221 // Create the new property.
4222 ObjCPropertyDecl *ToProperty
4223 = ObjCPropertyDecl::Create(Importer.getToContext(), DC, Loc,
4224 Name.getAsIdentifierInfo(),
4225 Importer.Import(D->getAtLoc()),
4226 Importer.Import(D->getLParenLoc()),
4227 Importer.Import(D->getType()),
4228 TSI,
4229 D->getPropertyImplementation());
4230 Importer.Imported(D, ToProperty);
4231 ToProperty->setLexicalDeclContext(LexicalDC);
4232 LexicalDC->addDeclInternal(ToProperty);
4233
4234 ToProperty->setPropertyAttributes(D->getPropertyAttributes());
4235 ToProperty->setPropertyAttributesAsWritten(
4236 D->getPropertyAttributesAsWritten());
4237 ToProperty->setGetterName(Importer.Import(D->getGetterName()));
4238 ToProperty->setSetterName(Importer.Import(D->getSetterName()));
4239 ToProperty->setGetterMethodDecl(
4240 cast_or_null<ObjCMethodDecl>(Importer.Import(D->getGetterMethodDecl())));
4241 ToProperty->setSetterMethodDecl(
4242 cast_or_null<ObjCMethodDecl>(Importer.Import(D->getSetterMethodDecl())));
4243 ToProperty->setPropertyIvarDecl(
4244 cast_or_null<ObjCIvarDecl>(Importer.Import(D->getPropertyIvarDecl())));
4245 return ToProperty;
4246 }
4247
VisitObjCPropertyImplDecl(ObjCPropertyImplDecl * D)4248 Decl *ASTNodeImporter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
4249 ObjCPropertyDecl *Property = cast_or_null<ObjCPropertyDecl>(
4250 Importer.Import(D->getPropertyDecl()));
4251 if (!Property)
4252 return nullptr;
4253
4254 DeclContext *DC = Importer.ImportContext(D->getDeclContext());
4255 if (!DC)
4256 return nullptr;
4257
4258 // Import the lexical declaration context.
4259 DeclContext *LexicalDC = DC;
4260 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4261 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4262 if (!LexicalDC)
4263 return nullptr;
4264 }
4265
4266 ObjCImplDecl *InImpl = dyn_cast<ObjCImplDecl>(LexicalDC);
4267 if (!InImpl)
4268 return nullptr;
4269
4270 // Import the ivar (for an @synthesize).
4271 ObjCIvarDecl *Ivar = nullptr;
4272 if (D->getPropertyIvarDecl()) {
4273 Ivar = cast_or_null<ObjCIvarDecl>(
4274 Importer.Import(D->getPropertyIvarDecl()));
4275 if (!Ivar)
4276 return nullptr;
4277 }
4278
4279 ObjCPropertyImplDecl *ToImpl
4280 = InImpl->FindPropertyImplDecl(Property->getIdentifier(),
4281 Property->getQueryKind());
4282 if (!ToImpl) {
4283 ToImpl = ObjCPropertyImplDecl::Create(Importer.getToContext(), DC,
4284 Importer.Import(D->getLocStart()),
4285 Importer.Import(D->getLocation()),
4286 Property,
4287 D->getPropertyImplementation(),
4288 Ivar,
4289 Importer.Import(D->getPropertyIvarDeclLoc()));
4290 ToImpl->setLexicalDeclContext(LexicalDC);
4291 Importer.Imported(D, ToImpl);
4292 LexicalDC->addDeclInternal(ToImpl);
4293 } else {
4294 // Check that we have the same kind of property implementation (@synthesize
4295 // vs. @dynamic).
4296 if (D->getPropertyImplementation() != ToImpl->getPropertyImplementation()) {
4297 Importer.ToDiag(ToImpl->getLocation(),
4298 diag::err_odr_objc_property_impl_kind_inconsistent)
4299 << Property->getDeclName()
4300 << (ToImpl->getPropertyImplementation()
4301 == ObjCPropertyImplDecl::Dynamic);
4302 Importer.FromDiag(D->getLocation(),
4303 diag::note_odr_objc_property_impl_kind)
4304 << D->getPropertyDecl()->getDeclName()
4305 << (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic);
4306 return nullptr;
4307 }
4308
4309 // For @synthesize, check that we have the same
4310 if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize &&
4311 Ivar != ToImpl->getPropertyIvarDecl()) {
4312 Importer.ToDiag(ToImpl->getPropertyIvarDeclLoc(),
4313 diag::err_odr_objc_synthesize_ivar_inconsistent)
4314 << Property->getDeclName()
4315 << ToImpl->getPropertyIvarDecl()->getDeclName()
4316 << Ivar->getDeclName();
4317 Importer.FromDiag(D->getPropertyIvarDeclLoc(),
4318 diag::note_odr_objc_synthesize_ivar_here)
4319 << D->getPropertyIvarDecl()->getDeclName();
4320 return nullptr;
4321 }
4322
4323 // Merge the existing implementation with the new implementation.
4324 Importer.Imported(D, ToImpl);
4325 }
4326
4327 return ToImpl;
4328 }
4329
VisitTemplateTypeParmDecl(TemplateTypeParmDecl * D)4330 Decl *ASTNodeImporter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
4331 // For template arguments, we adopt the translation unit as our declaration
4332 // context. This context will be fixed when the actual template declaration
4333 // is created.
4334
4335 // FIXME: Import default argument.
4336 return TemplateTypeParmDecl::Create(Importer.getToContext(),
4337 Importer.getToContext().getTranslationUnitDecl(),
4338 Importer.Import(D->getLocStart()),
4339 Importer.Import(D->getLocation()),
4340 D->getDepth(),
4341 D->getIndex(),
4342 Importer.Import(D->getIdentifier()),
4343 D->wasDeclaredWithTypename(),
4344 D->isParameterPack());
4345 }
4346
4347 Decl *
VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl * D)4348 ASTNodeImporter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
4349 // Import the name of this declaration.
4350 DeclarationName Name = Importer.Import(D->getDeclName());
4351 if (D->getDeclName() && !Name)
4352 return nullptr;
4353
4354 // Import the location of this declaration.
4355 SourceLocation Loc = Importer.Import(D->getLocation());
4356
4357 // Import the type of this declaration.
4358 QualType T = Importer.Import(D->getType());
4359 if (T.isNull())
4360 return nullptr;
4361
4362 // Import type-source information.
4363 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
4364 if (D->getTypeSourceInfo() && !TInfo)
4365 return nullptr;
4366
4367 // FIXME: Import default argument.
4368
4369 return NonTypeTemplateParmDecl::Create(Importer.getToContext(),
4370 Importer.getToContext().getTranslationUnitDecl(),
4371 Importer.Import(D->getInnerLocStart()),
4372 Loc, D->getDepth(), D->getPosition(),
4373 Name.getAsIdentifierInfo(),
4374 T, D->isParameterPack(), TInfo);
4375 }
4376
4377 Decl *
VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl * D)4378 ASTNodeImporter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
4379 // Import the name of this declaration.
4380 DeclarationName Name = Importer.Import(D->getDeclName());
4381 if (D->getDeclName() && !Name)
4382 return nullptr;
4383
4384 // Import the location of this declaration.
4385 SourceLocation Loc = Importer.Import(D->getLocation());
4386
4387 // Import template parameters.
4388 TemplateParameterList *TemplateParams
4389 = ImportTemplateParameterList(D->getTemplateParameters());
4390 if (!TemplateParams)
4391 return nullptr;
4392
4393 // FIXME: Import default argument.
4394
4395 return TemplateTemplateParmDecl::Create(Importer.getToContext(),
4396 Importer.getToContext().getTranslationUnitDecl(),
4397 Loc, D->getDepth(), D->getPosition(),
4398 D->isParameterPack(),
4399 Name.getAsIdentifierInfo(),
4400 TemplateParams);
4401 }
4402
VisitClassTemplateDecl(ClassTemplateDecl * D)4403 Decl *ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
4404 // If this record has a definition in the translation unit we're coming from,
4405 // but this particular declaration is not that definition, import the
4406 // definition and map to that.
4407 CXXRecordDecl *Definition
4408 = cast_or_null<CXXRecordDecl>(D->getTemplatedDecl()->getDefinition());
4409 if (Definition && Definition != D->getTemplatedDecl()) {
4410 Decl *ImportedDef
4411 = Importer.Import(Definition->getDescribedClassTemplate());
4412 if (!ImportedDef)
4413 return nullptr;
4414
4415 return Importer.Imported(D, ImportedDef);
4416 }
4417
4418 // Import the major distinguishing characteristics of this class template.
4419 DeclContext *DC, *LexicalDC;
4420 DeclarationName Name;
4421 SourceLocation Loc;
4422 NamedDecl *ToD;
4423 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4424 return nullptr;
4425 if (ToD)
4426 return ToD;
4427
4428 // We may already have a template of the same name; try to find and match it.
4429 if (!DC->isFunctionOrMethod()) {
4430 SmallVector<NamedDecl *, 4> ConflictingDecls;
4431 SmallVector<NamedDecl *, 2> FoundDecls;
4432 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
4433 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4434 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
4435 continue;
4436
4437 Decl *Found = FoundDecls[I];
4438 if (ClassTemplateDecl *FoundTemplate
4439 = dyn_cast<ClassTemplateDecl>(Found)) {
4440 if (IsStructuralMatch(D, FoundTemplate)) {
4441 // The class templates structurally match; call it the same template.
4442 // FIXME: We may be filling in a forward declaration here. Handle
4443 // this case!
4444 Importer.Imported(D->getTemplatedDecl(),
4445 FoundTemplate->getTemplatedDecl());
4446 return Importer.Imported(D, FoundTemplate);
4447 }
4448 }
4449
4450 ConflictingDecls.push_back(FoundDecls[I]);
4451 }
4452
4453 if (!ConflictingDecls.empty()) {
4454 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary,
4455 ConflictingDecls.data(),
4456 ConflictingDecls.size());
4457 }
4458
4459 if (!Name)
4460 return nullptr;
4461 }
4462
4463 CXXRecordDecl *DTemplated = D->getTemplatedDecl();
4464
4465 // Create the declaration that is being templated.
4466 // Create the declaration that is being templated.
4467 CXXRecordDecl *D2Templated = cast_or_null<CXXRecordDecl>(
4468 Importer.Import(DTemplated));
4469 if (!D2Templated)
4470 return nullptr;
4471
4472 // Resolve possible cyclic import.
4473 if (Decl *AlreadyImported = Importer.GetAlreadyImportedOrNull(D))
4474 return AlreadyImported;
4475
4476 // Create the class template declaration itself.
4477 TemplateParameterList *TemplateParams
4478 = ImportTemplateParameterList(D->getTemplateParameters());
4479 if (!TemplateParams)
4480 return nullptr;
4481
4482 ClassTemplateDecl *D2 = ClassTemplateDecl::Create(Importer.getToContext(), DC,
4483 Loc, Name, TemplateParams,
4484 D2Templated,
4485 /*PrevDecl=*/nullptr);
4486 D2Templated->setDescribedClassTemplate(D2);
4487
4488 D2->setAccess(D->getAccess());
4489 D2->setLexicalDeclContext(LexicalDC);
4490 LexicalDC->addDeclInternal(D2);
4491
4492 // Note the relationship between the class templates.
4493 Importer.Imported(D, D2);
4494 Importer.Imported(DTemplated, D2Templated);
4495
4496 if (DTemplated->isCompleteDefinition() &&
4497 !D2Templated->isCompleteDefinition()) {
4498 // FIXME: Import definition!
4499 }
4500
4501 return D2;
4502 }
4503
VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl * D)4504 Decl *ASTNodeImporter::VisitClassTemplateSpecializationDecl(
4505 ClassTemplateSpecializationDecl *D) {
4506 // If this record has a definition in the translation unit we're coming from,
4507 // but this particular declaration is not that definition, import the
4508 // definition and map to that.
4509 TagDecl *Definition = D->getDefinition();
4510 if (Definition && Definition != D) {
4511 Decl *ImportedDef = Importer.Import(Definition);
4512 if (!ImportedDef)
4513 return nullptr;
4514
4515 return Importer.Imported(D, ImportedDef);
4516 }
4517
4518 ClassTemplateDecl *ClassTemplate
4519 = cast_or_null<ClassTemplateDecl>(Importer.Import(
4520 D->getSpecializedTemplate()));
4521 if (!ClassTemplate)
4522 return nullptr;
4523
4524 // Import the context of this declaration.
4525 DeclContext *DC = ClassTemplate->getDeclContext();
4526 if (!DC)
4527 return nullptr;
4528
4529 DeclContext *LexicalDC = DC;
4530 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4531 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4532 if (!LexicalDC)
4533 return nullptr;
4534 }
4535
4536 // Import the location of this declaration.
4537 SourceLocation StartLoc = Importer.Import(D->getLocStart());
4538 SourceLocation IdLoc = Importer.Import(D->getLocation());
4539
4540 // Import template arguments.
4541 SmallVector<TemplateArgument, 2> TemplateArgs;
4542 if (ImportTemplateArguments(D->getTemplateArgs().data(),
4543 D->getTemplateArgs().size(),
4544 TemplateArgs))
4545 return nullptr;
4546
4547 // Try to find an existing specialization with these template arguments.
4548 void *InsertPos = nullptr;
4549 ClassTemplateSpecializationDecl *D2
4550 = ClassTemplate->findSpecialization(TemplateArgs, InsertPos);
4551 if (D2) {
4552 // We already have a class template specialization with these template
4553 // arguments.
4554
4555 // FIXME: Check for specialization vs. instantiation errors.
4556
4557 if (RecordDecl *FoundDef = D2->getDefinition()) {
4558 if (!D->isCompleteDefinition() || IsStructuralMatch(D, FoundDef)) {
4559 // The record types structurally match, or the "from" translation
4560 // unit only had a forward declaration anyway; call it the same
4561 // function.
4562 return Importer.Imported(D, FoundDef);
4563 }
4564 }
4565 } else {
4566 // Create a new specialization.
4567 D2 = ClassTemplateSpecializationDecl::Create(Importer.getToContext(),
4568 D->getTagKind(), DC,
4569 StartLoc, IdLoc,
4570 ClassTemplate,
4571 TemplateArgs,
4572 /*PrevDecl=*/nullptr);
4573 D2->setSpecializationKind(D->getSpecializationKind());
4574
4575 // Add this specialization to the class template.
4576 ClassTemplate->AddSpecialization(D2, InsertPos);
4577
4578 // Import the qualifier, if any.
4579 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
4580
4581 // Add the specialization to this context.
4582 D2->setLexicalDeclContext(LexicalDC);
4583 LexicalDC->addDeclInternal(D2);
4584 }
4585 Importer.Imported(D, D2);
4586
4587 if (D->isCompleteDefinition() && ImportDefinition(D, D2))
4588 return nullptr;
4589
4590 return D2;
4591 }
4592
VisitVarTemplateDecl(VarTemplateDecl * D)4593 Decl *ASTNodeImporter::VisitVarTemplateDecl(VarTemplateDecl *D) {
4594 // If this variable has a definition in the translation unit we're coming
4595 // from,
4596 // but this particular declaration is not that definition, import the
4597 // definition and map to that.
4598 VarDecl *Definition =
4599 cast_or_null<VarDecl>(D->getTemplatedDecl()->getDefinition());
4600 if (Definition && Definition != D->getTemplatedDecl()) {
4601 Decl *ImportedDef = Importer.Import(Definition->getDescribedVarTemplate());
4602 if (!ImportedDef)
4603 return nullptr;
4604
4605 return Importer.Imported(D, ImportedDef);
4606 }
4607
4608 // Import the major distinguishing characteristics of this variable template.
4609 DeclContext *DC, *LexicalDC;
4610 DeclarationName Name;
4611 SourceLocation Loc;
4612 NamedDecl *ToD;
4613 if (ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4614 return nullptr;
4615 if (ToD)
4616 return ToD;
4617
4618 // We may already have a template of the same name; try to find and match it.
4619 assert(!DC->isFunctionOrMethod() &&
4620 "Variable templates cannot be declared at function scope");
4621 SmallVector<NamedDecl *, 4> ConflictingDecls;
4622 SmallVector<NamedDecl *, 2> FoundDecls;
4623 DC->getRedeclContext()->localUncachedLookup(Name, FoundDecls);
4624 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4625 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
4626 continue;
4627
4628 Decl *Found = FoundDecls[I];
4629 if (VarTemplateDecl *FoundTemplate = dyn_cast<VarTemplateDecl>(Found)) {
4630 if (IsStructuralMatch(D, FoundTemplate)) {
4631 // The variable templates structurally match; call it the same template.
4632 Importer.Imported(D->getTemplatedDecl(),
4633 FoundTemplate->getTemplatedDecl());
4634 return Importer.Imported(D, FoundTemplate);
4635 }
4636 }
4637
4638 ConflictingDecls.push_back(FoundDecls[I]);
4639 }
4640
4641 if (!ConflictingDecls.empty()) {
4642 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary,
4643 ConflictingDecls.data(),
4644 ConflictingDecls.size());
4645 }
4646
4647 if (!Name)
4648 return nullptr;
4649
4650 VarDecl *DTemplated = D->getTemplatedDecl();
4651
4652 // Import the type.
4653 QualType T = Importer.Import(DTemplated->getType());
4654 if (T.isNull())
4655 return nullptr;
4656
4657 // Create the declaration that is being templated.
4658 SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart());
4659 SourceLocation IdLoc = Importer.Import(DTemplated->getLocation());
4660 TypeSourceInfo *TInfo = Importer.Import(DTemplated->getTypeSourceInfo());
4661 VarDecl *D2Templated = VarDecl::Create(Importer.getToContext(), DC, StartLoc,
4662 IdLoc, Name.getAsIdentifierInfo(), T,
4663 TInfo, DTemplated->getStorageClass());
4664 D2Templated->setAccess(DTemplated->getAccess());
4665 D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc()));
4666 D2Templated->setLexicalDeclContext(LexicalDC);
4667
4668 // Importer.Imported(DTemplated, D2Templated);
4669 // LexicalDC->addDeclInternal(D2Templated);
4670
4671 // Merge the initializer.
4672 if (ImportDefinition(DTemplated, D2Templated))
4673 return nullptr;
4674
4675 // Create the variable template declaration itself.
4676 TemplateParameterList *TemplateParams =
4677 ImportTemplateParameterList(D->getTemplateParameters());
4678 if (!TemplateParams)
4679 return nullptr;
4680
4681 VarTemplateDecl *D2 = VarTemplateDecl::Create(
4682 Importer.getToContext(), DC, Loc, Name, TemplateParams, D2Templated);
4683 D2Templated->setDescribedVarTemplate(D2);
4684
4685 D2->setAccess(D->getAccess());
4686 D2->setLexicalDeclContext(LexicalDC);
4687 LexicalDC->addDeclInternal(D2);
4688
4689 // Note the relationship between the variable templates.
4690 Importer.Imported(D, D2);
4691 Importer.Imported(DTemplated, D2Templated);
4692
4693 if (DTemplated->isThisDeclarationADefinition() &&
4694 !D2Templated->isThisDeclarationADefinition()) {
4695 // FIXME: Import definition!
4696 }
4697
4698 return D2;
4699 }
4700
VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl * D)4701 Decl *ASTNodeImporter::VisitVarTemplateSpecializationDecl(
4702 VarTemplateSpecializationDecl *D) {
4703 // If this record has a definition in the translation unit we're coming from,
4704 // but this particular declaration is not that definition, import the
4705 // definition and map to that.
4706 VarDecl *Definition = D->getDefinition();
4707 if (Definition && Definition != D) {
4708 Decl *ImportedDef = Importer.Import(Definition);
4709 if (!ImportedDef)
4710 return nullptr;
4711
4712 return Importer.Imported(D, ImportedDef);
4713 }
4714
4715 VarTemplateDecl *VarTemplate = cast_or_null<VarTemplateDecl>(
4716 Importer.Import(D->getSpecializedTemplate()));
4717 if (!VarTemplate)
4718 return nullptr;
4719
4720 // Import the context of this declaration.
4721 DeclContext *DC = VarTemplate->getDeclContext();
4722 if (!DC)
4723 return nullptr;
4724
4725 DeclContext *LexicalDC = DC;
4726 if (D->getDeclContext() != D->getLexicalDeclContext()) {
4727 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
4728 if (!LexicalDC)
4729 return nullptr;
4730 }
4731
4732 // Import the location of this declaration.
4733 SourceLocation StartLoc = Importer.Import(D->getLocStart());
4734 SourceLocation IdLoc = Importer.Import(D->getLocation());
4735
4736 // Import template arguments.
4737 SmallVector<TemplateArgument, 2> TemplateArgs;
4738 if (ImportTemplateArguments(D->getTemplateArgs().data(),
4739 D->getTemplateArgs().size(), TemplateArgs))
4740 return nullptr;
4741
4742 // Try to find an existing specialization with these template arguments.
4743 void *InsertPos = nullptr;
4744 VarTemplateSpecializationDecl *D2 = VarTemplate->findSpecialization(
4745 TemplateArgs, InsertPos);
4746 if (D2) {
4747 // We already have a variable template specialization with these template
4748 // arguments.
4749
4750 // FIXME: Check for specialization vs. instantiation errors.
4751
4752 if (VarDecl *FoundDef = D2->getDefinition()) {
4753 if (!D->isThisDeclarationADefinition() ||
4754 IsStructuralMatch(D, FoundDef)) {
4755 // The record types structurally match, or the "from" translation
4756 // unit only had a forward declaration anyway; call it the same
4757 // variable.
4758 return Importer.Imported(D, FoundDef);
4759 }
4760 }
4761 } else {
4762
4763 // Import the type.
4764 QualType T = Importer.Import(D->getType());
4765 if (T.isNull())
4766 return nullptr;
4767 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
4768
4769 // Create a new specialization.
4770 D2 = VarTemplateSpecializationDecl::Create(
4771 Importer.getToContext(), DC, StartLoc, IdLoc, VarTemplate, T, TInfo,
4772 D->getStorageClass(), TemplateArgs);
4773 D2->setSpecializationKind(D->getSpecializationKind());
4774 D2->setTemplateArgsInfo(D->getTemplateArgsInfo());
4775
4776 // Add this specialization to the class template.
4777 VarTemplate->AddSpecialization(D2, InsertPos);
4778
4779 // Import the qualifier, if any.
4780 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
4781
4782 // Add the specialization to this context.
4783 D2->setLexicalDeclContext(LexicalDC);
4784 LexicalDC->addDeclInternal(D2);
4785 }
4786 Importer.Imported(D, D2);
4787
4788 if (D->isThisDeclarationADefinition() && ImportDefinition(D, D2))
4789 return nullptr;
4790
4791 return D2;
4792 }
4793
4794 //----------------------------------------------------------------------------
4795 // Import Statements
4796 //----------------------------------------------------------------------------
4797
ImportDeclGroup(DeclGroupRef DG)4798 DeclGroupRef ASTNodeImporter::ImportDeclGroup(DeclGroupRef DG) {
4799 if (DG.isNull())
4800 return DeclGroupRef::Create(Importer.getToContext(), nullptr, 0);
4801 size_t NumDecls = DG.end() - DG.begin();
4802 SmallVector<Decl *, 1> ToDecls(NumDecls);
4803 auto &_Importer = this->Importer;
4804 std::transform(DG.begin(), DG.end(), ToDecls.begin(),
4805 [&_Importer](Decl *D) -> Decl * {
4806 return _Importer.Import(D);
4807 });
4808 return DeclGroupRef::Create(Importer.getToContext(),
4809 ToDecls.begin(),
4810 NumDecls);
4811 }
4812
VisitStmt(Stmt * S)4813 Stmt *ASTNodeImporter::VisitStmt(Stmt *S) {
4814 Importer.FromDiag(S->getLocStart(), diag::err_unsupported_ast_node)
4815 << S->getStmtClassName();
4816 return nullptr;
4817 }
4818
4819
VisitGCCAsmStmt(GCCAsmStmt * S)4820 Stmt *ASTNodeImporter::VisitGCCAsmStmt(GCCAsmStmt *S) {
4821 SmallVector<IdentifierInfo *, 4> Names;
4822 for (unsigned I = 0, E = S->getNumOutputs(); I != E; I++) {
4823 IdentifierInfo *ToII = Importer.Import(S->getOutputIdentifier(I));
4824 if (!ToII)
4825 return nullptr;
4826 Names.push_back(ToII);
4827 }
4828 for (unsigned I = 0, E = S->getNumInputs(); I != E; I++) {
4829 IdentifierInfo *ToII = Importer.Import(S->getInputIdentifier(I));
4830 if (!ToII)
4831 return nullptr;
4832 Names.push_back(ToII);
4833 }
4834
4835 SmallVector<StringLiteral *, 4> Clobbers;
4836 for (unsigned I = 0, E = S->getNumClobbers(); I != E; I++) {
4837 StringLiteral *Clobber = cast_or_null<StringLiteral>(
4838 Importer.Import(S->getClobberStringLiteral(I)));
4839 if (!Clobber)
4840 return nullptr;
4841 Clobbers.push_back(Clobber);
4842 }
4843
4844 SmallVector<StringLiteral *, 4> Constraints;
4845 for (unsigned I = 0, E = S->getNumOutputs(); I != E; I++) {
4846 StringLiteral *Output = cast_or_null<StringLiteral>(
4847 Importer.Import(S->getOutputConstraintLiteral(I)));
4848 if (!Output)
4849 return nullptr;
4850 Constraints.push_back(Output);
4851 }
4852
4853 for (unsigned I = 0, E = S->getNumInputs(); I != E; I++) {
4854 StringLiteral *Input = cast_or_null<StringLiteral>(
4855 Importer.Import(S->getInputConstraintLiteral(I)));
4856 if (!Input)
4857 return nullptr;
4858 Constraints.push_back(Input);
4859 }
4860
4861 SmallVector<Expr *, 4> Exprs(S->getNumOutputs() + S->getNumInputs());
4862 if (ImportArrayChecked(S->begin_outputs(), S->end_outputs(), Exprs.begin()))
4863 return nullptr;
4864
4865 if (ImportArrayChecked(S->begin_inputs(), S->end_inputs(),
4866 Exprs.begin() + S->getNumOutputs()))
4867 return nullptr;
4868
4869 StringLiteral *AsmStr = cast_or_null<StringLiteral>(
4870 Importer.Import(S->getAsmString()));
4871 if (!AsmStr)
4872 return nullptr;
4873
4874 return new (Importer.getToContext()) GCCAsmStmt(
4875 Importer.getToContext(),
4876 Importer.Import(S->getAsmLoc()),
4877 S->isSimple(),
4878 S->isVolatile(),
4879 S->getNumOutputs(),
4880 S->getNumInputs(),
4881 Names.data(),
4882 Constraints.data(),
4883 Exprs.data(),
4884 AsmStr,
4885 S->getNumClobbers(),
4886 Clobbers.data(),
4887 Importer.Import(S->getRParenLoc()));
4888 }
4889
VisitDeclStmt(DeclStmt * S)4890 Stmt *ASTNodeImporter::VisitDeclStmt(DeclStmt *S) {
4891 DeclGroupRef ToDG = ImportDeclGroup(S->getDeclGroup());
4892 for (Decl *ToD : ToDG) {
4893 if (!ToD)
4894 return nullptr;
4895 }
4896 SourceLocation ToStartLoc = Importer.Import(S->getStartLoc());
4897 SourceLocation ToEndLoc = Importer.Import(S->getEndLoc());
4898 return new (Importer.getToContext()) DeclStmt(ToDG, ToStartLoc, ToEndLoc);
4899 }
4900
VisitNullStmt(NullStmt * S)4901 Stmt *ASTNodeImporter::VisitNullStmt(NullStmt *S) {
4902 SourceLocation ToSemiLoc = Importer.Import(S->getSemiLoc());
4903 return new (Importer.getToContext()) NullStmt(ToSemiLoc,
4904 S->hasLeadingEmptyMacro());
4905 }
4906
VisitCompoundStmt(CompoundStmt * S)4907 Stmt *ASTNodeImporter::VisitCompoundStmt(CompoundStmt *S) {
4908 llvm::SmallVector<Stmt *, 8> ToStmts(S->size());
4909
4910 if (ImportArrayChecked(S->body_begin(), S->body_end(), ToStmts.begin()))
4911 return nullptr;
4912
4913 SourceLocation ToLBraceLoc = Importer.Import(S->getLBracLoc());
4914 SourceLocation ToRBraceLoc = Importer.Import(S->getRBracLoc());
4915 return new (Importer.getToContext()) CompoundStmt(Importer.getToContext(),
4916 ToStmts,
4917 ToLBraceLoc, ToRBraceLoc);
4918 }
4919
VisitCaseStmt(CaseStmt * S)4920 Stmt *ASTNodeImporter::VisitCaseStmt(CaseStmt *S) {
4921 Expr *ToLHS = Importer.Import(S->getLHS());
4922 if (!ToLHS)
4923 return nullptr;
4924 Expr *ToRHS = Importer.Import(S->getRHS());
4925 if (!ToRHS && S->getRHS())
4926 return nullptr;
4927 SourceLocation ToCaseLoc = Importer.Import(S->getCaseLoc());
4928 SourceLocation ToEllipsisLoc = Importer.Import(S->getEllipsisLoc());
4929 SourceLocation ToColonLoc = Importer.Import(S->getColonLoc());
4930 return new (Importer.getToContext()) CaseStmt(ToLHS, ToRHS,
4931 ToCaseLoc, ToEllipsisLoc,
4932 ToColonLoc);
4933 }
4934
VisitDefaultStmt(DefaultStmt * S)4935 Stmt *ASTNodeImporter::VisitDefaultStmt(DefaultStmt *S) {
4936 SourceLocation ToDefaultLoc = Importer.Import(S->getDefaultLoc());
4937 SourceLocation ToColonLoc = Importer.Import(S->getColonLoc());
4938 Stmt *ToSubStmt = Importer.Import(S->getSubStmt());
4939 if (!ToSubStmt && S->getSubStmt())
4940 return nullptr;
4941 return new (Importer.getToContext()) DefaultStmt(ToDefaultLoc, ToColonLoc,
4942 ToSubStmt);
4943 }
4944
VisitLabelStmt(LabelStmt * S)4945 Stmt *ASTNodeImporter::VisitLabelStmt(LabelStmt *S) {
4946 SourceLocation ToIdentLoc = Importer.Import(S->getIdentLoc());
4947 LabelDecl *ToLabelDecl =
4948 cast_or_null<LabelDecl>(Importer.Import(S->getDecl()));
4949 if (!ToLabelDecl && S->getDecl())
4950 return nullptr;
4951 Stmt *ToSubStmt = Importer.Import(S->getSubStmt());
4952 if (!ToSubStmt && S->getSubStmt())
4953 return nullptr;
4954 return new (Importer.getToContext()) LabelStmt(ToIdentLoc, ToLabelDecl,
4955 ToSubStmt);
4956 }
4957
VisitAttributedStmt(AttributedStmt * S)4958 Stmt *ASTNodeImporter::VisitAttributedStmt(AttributedStmt *S) {
4959 SourceLocation ToAttrLoc = Importer.Import(S->getAttrLoc());
4960 ArrayRef<const Attr*> FromAttrs(S->getAttrs());
4961 SmallVector<const Attr *, 1> ToAttrs(FromAttrs.size());
4962 ASTContext &_ToContext = Importer.getToContext();
4963 std::transform(FromAttrs.begin(), FromAttrs.end(), ToAttrs.begin(),
4964 [&_ToContext](const Attr *A) -> const Attr * {
4965 return A->clone(_ToContext);
4966 });
4967 for (const Attr *ToA : ToAttrs) {
4968 if (!ToA)
4969 return nullptr;
4970 }
4971 Stmt *ToSubStmt = Importer.Import(S->getSubStmt());
4972 if (!ToSubStmt && S->getSubStmt())
4973 return nullptr;
4974 return AttributedStmt::Create(Importer.getToContext(), ToAttrLoc,
4975 ToAttrs, ToSubStmt);
4976 }
4977
VisitIfStmt(IfStmt * S)4978 Stmt *ASTNodeImporter::VisitIfStmt(IfStmt *S) {
4979 SourceLocation ToIfLoc = Importer.Import(S->getIfLoc());
4980 Stmt *ToInit = Importer.Import(S->getInit());
4981 if (!ToInit && S->getInit())
4982 return nullptr;
4983 VarDecl *ToConditionVariable = nullptr;
4984 if (VarDecl *FromConditionVariable = S->getConditionVariable()) {
4985 ToConditionVariable =
4986 dyn_cast_or_null<VarDecl>(Importer.Import(FromConditionVariable));
4987 if (!ToConditionVariable)
4988 return nullptr;
4989 }
4990 Expr *ToCondition = Importer.Import(S->getCond());
4991 if (!ToCondition && S->getCond())
4992 return nullptr;
4993 Stmt *ToThenStmt = Importer.Import(S->getThen());
4994 if (!ToThenStmt && S->getThen())
4995 return nullptr;
4996 SourceLocation ToElseLoc = Importer.Import(S->getElseLoc());
4997 Stmt *ToElseStmt = Importer.Import(S->getElse());
4998 if (!ToElseStmt && S->getElse())
4999 return nullptr;
5000 return new (Importer.getToContext()) IfStmt(Importer.getToContext(),
5001 ToIfLoc, S->isConstexpr(),
5002 ToInit,
5003 ToConditionVariable,
5004 ToCondition, ToThenStmt,
5005 ToElseLoc, ToElseStmt);
5006 }
5007
VisitSwitchStmt(SwitchStmt * S)5008 Stmt *ASTNodeImporter::VisitSwitchStmt(SwitchStmt *S) {
5009 Stmt *ToInit = Importer.Import(S->getInit());
5010 if (!ToInit && S->getInit())
5011 return nullptr;
5012 VarDecl *ToConditionVariable = nullptr;
5013 if (VarDecl *FromConditionVariable = S->getConditionVariable()) {
5014 ToConditionVariable =
5015 dyn_cast_or_null<VarDecl>(Importer.Import(FromConditionVariable));
5016 if (!ToConditionVariable)
5017 return nullptr;
5018 }
5019 Expr *ToCondition = Importer.Import(S->getCond());
5020 if (!ToCondition && S->getCond())
5021 return nullptr;
5022 SwitchStmt *ToStmt = new (Importer.getToContext()) SwitchStmt(
5023 Importer.getToContext(), ToInit,
5024 ToConditionVariable, ToCondition);
5025 Stmt *ToBody = Importer.Import(S->getBody());
5026 if (!ToBody && S->getBody())
5027 return nullptr;
5028 ToStmt->setBody(ToBody);
5029 ToStmt->setSwitchLoc(Importer.Import(S->getSwitchLoc()));
5030 // Now we have to re-chain the cases.
5031 SwitchCase *LastChainedSwitchCase = nullptr;
5032 for (SwitchCase *SC = S->getSwitchCaseList(); SC != nullptr;
5033 SC = SC->getNextSwitchCase()) {
5034 SwitchCase *ToSC = dyn_cast_or_null<SwitchCase>(Importer.Import(SC));
5035 if (!ToSC)
5036 return nullptr;
5037 if (LastChainedSwitchCase)
5038 LastChainedSwitchCase->setNextSwitchCase(ToSC);
5039 else
5040 ToStmt->setSwitchCaseList(ToSC);
5041 LastChainedSwitchCase = ToSC;
5042 }
5043 return ToStmt;
5044 }
5045
VisitWhileStmt(WhileStmt * S)5046 Stmt *ASTNodeImporter::VisitWhileStmt(WhileStmt *S) {
5047 VarDecl *ToConditionVariable = nullptr;
5048 if (VarDecl *FromConditionVariable = S->getConditionVariable()) {
5049 ToConditionVariable =
5050 dyn_cast_or_null<VarDecl>(Importer.Import(FromConditionVariable));
5051 if (!ToConditionVariable)
5052 return nullptr;
5053 }
5054 Expr *ToCondition = Importer.Import(S->getCond());
5055 if (!ToCondition && S->getCond())
5056 return nullptr;
5057 Stmt *ToBody = Importer.Import(S->getBody());
5058 if (!ToBody && S->getBody())
5059 return nullptr;
5060 SourceLocation ToWhileLoc = Importer.Import(S->getWhileLoc());
5061 return new (Importer.getToContext()) WhileStmt(Importer.getToContext(),
5062 ToConditionVariable,
5063 ToCondition, ToBody,
5064 ToWhileLoc);
5065 }
5066
VisitDoStmt(DoStmt * S)5067 Stmt *ASTNodeImporter::VisitDoStmt(DoStmt *S) {
5068 Stmt *ToBody = Importer.Import(S->getBody());
5069 if (!ToBody && S->getBody())
5070 return nullptr;
5071 Expr *ToCondition = Importer.Import(S->getCond());
5072 if (!ToCondition && S->getCond())
5073 return nullptr;
5074 SourceLocation ToDoLoc = Importer.Import(S->getDoLoc());
5075 SourceLocation ToWhileLoc = Importer.Import(S->getWhileLoc());
5076 SourceLocation ToRParenLoc = Importer.Import(S->getRParenLoc());
5077 return new (Importer.getToContext()) DoStmt(ToBody, ToCondition,
5078 ToDoLoc, ToWhileLoc,
5079 ToRParenLoc);
5080 }
5081
VisitForStmt(ForStmt * S)5082 Stmt *ASTNodeImporter::VisitForStmt(ForStmt *S) {
5083 Stmt *ToInit = Importer.Import(S->getInit());
5084 if (!ToInit && S->getInit())
5085 return nullptr;
5086 Expr *ToCondition = Importer.Import(S->getCond());
5087 if (!ToCondition && S->getCond())
5088 return nullptr;
5089 VarDecl *ToConditionVariable = nullptr;
5090 if (VarDecl *FromConditionVariable = S->getConditionVariable()) {
5091 ToConditionVariable =
5092 dyn_cast_or_null<VarDecl>(Importer.Import(FromConditionVariable));
5093 if (!ToConditionVariable)
5094 return nullptr;
5095 }
5096 Expr *ToInc = Importer.Import(S->getInc());
5097 if (!ToInc && S->getInc())
5098 return nullptr;
5099 Stmt *ToBody = Importer.Import(S->getBody());
5100 if (!ToBody && S->getBody())
5101 return nullptr;
5102 SourceLocation ToForLoc = Importer.Import(S->getForLoc());
5103 SourceLocation ToLParenLoc = Importer.Import(S->getLParenLoc());
5104 SourceLocation ToRParenLoc = Importer.Import(S->getRParenLoc());
5105 return new (Importer.getToContext()) ForStmt(Importer.getToContext(),
5106 ToInit, ToCondition,
5107 ToConditionVariable,
5108 ToInc, ToBody,
5109 ToForLoc, ToLParenLoc,
5110 ToRParenLoc);
5111 }
5112
VisitGotoStmt(GotoStmt * S)5113 Stmt *ASTNodeImporter::VisitGotoStmt(GotoStmt *S) {
5114 LabelDecl *ToLabel = nullptr;
5115 if (LabelDecl *FromLabel = S->getLabel()) {
5116 ToLabel = dyn_cast_or_null<LabelDecl>(Importer.Import(FromLabel));
5117 if (!ToLabel)
5118 return nullptr;
5119 }
5120 SourceLocation ToGotoLoc = Importer.Import(S->getGotoLoc());
5121 SourceLocation ToLabelLoc = Importer.Import(S->getLabelLoc());
5122 return new (Importer.getToContext()) GotoStmt(ToLabel,
5123 ToGotoLoc, ToLabelLoc);
5124 }
5125
VisitIndirectGotoStmt(IndirectGotoStmt * S)5126 Stmt *ASTNodeImporter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
5127 SourceLocation ToGotoLoc = Importer.Import(S->getGotoLoc());
5128 SourceLocation ToStarLoc = Importer.Import(S->getStarLoc());
5129 Expr *ToTarget = Importer.Import(S->getTarget());
5130 if (!ToTarget && S->getTarget())
5131 return nullptr;
5132 return new (Importer.getToContext()) IndirectGotoStmt(ToGotoLoc, ToStarLoc,
5133 ToTarget);
5134 }
5135
VisitContinueStmt(ContinueStmt * S)5136 Stmt *ASTNodeImporter::VisitContinueStmt(ContinueStmt *S) {
5137 SourceLocation ToContinueLoc = Importer.Import(S->getContinueLoc());
5138 return new (Importer.getToContext()) ContinueStmt(ToContinueLoc);
5139 }
5140
VisitBreakStmt(BreakStmt * S)5141 Stmt *ASTNodeImporter::VisitBreakStmt(BreakStmt *S) {
5142 SourceLocation ToBreakLoc = Importer.Import(S->getBreakLoc());
5143 return new (Importer.getToContext()) BreakStmt(ToBreakLoc);
5144 }
5145
VisitReturnStmt(ReturnStmt * S)5146 Stmt *ASTNodeImporter::VisitReturnStmt(ReturnStmt *S) {
5147 SourceLocation ToRetLoc = Importer.Import(S->getReturnLoc());
5148 Expr *ToRetExpr = Importer.Import(S->getRetValue());
5149 if (!ToRetExpr && S->getRetValue())
5150 return nullptr;
5151 VarDecl *NRVOCandidate = const_cast<VarDecl*>(S->getNRVOCandidate());
5152 VarDecl *ToNRVOCandidate = cast_or_null<VarDecl>(Importer.Import(NRVOCandidate));
5153 if (!ToNRVOCandidate && NRVOCandidate)
5154 return nullptr;
5155 return new (Importer.getToContext()) ReturnStmt(ToRetLoc, ToRetExpr,
5156 ToNRVOCandidate);
5157 }
5158
VisitCXXCatchStmt(CXXCatchStmt * S)5159 Stmt *ASTNodeImporter::VisitCXXCatchStmt(CXXCatchStmt *S) {
5160 SourceLocation ToCatchLoc = Importer.Import(S->getCatchLoc());
5161 VarDecl *ToExceptionDecl = nullptr;
5162 if (VarDecl *FromExceptionDecl = S->getExceptionDecl()) {
5163 ToExceptionDecl =
5164 dyn_cast_or_null<VarDecl>(Importer.Import(FromExceptionDecl));
5165 if (!ToExceptionDecl)
5166 return nullptr;
5167 }
5168 Stmt *ToHandlerBlock = Importer.Import(S->getHandlerBlock());
5169 if (!ToHandlerBlock && S->getHandlerBlock())
5170 return nullptr;
5171 return new (Importer.getToContext()) CXXCatchStmt(ToCatchLoc,
5172 ToExceptionDecl,
5173 ToHandlerBlock);
5174 }
5175
VisitCXXTryStmt(CXXTryStmt * S)5176 Stmt *ASTNodeImporter::VisitCXXTryStmt(CXXTryStmt *S) {
5177 SourceLocation ToTryLoc = Importer.Import(S->getTryLoc());
5178 Stmt *ToTryBlock = Importer.Import(S->getTryBlock());
5179 if (!ToTryBlock && S->getTryBlock())
5180 return nullptr;
5181 SmallVector<Stmt *, 1> ToHandlers(S->getNumHandlers());
5182 for (unsigned HI = 0, HE = S->getNumHandlers(); HI != HE; ++HI) {
5183 CXXCatchStmt *FromHandler = S->getHandler(HI);
5184 if (Stmt *ToHandler = Importer.Import(FromHandler))
5185 ToHandlers[HI] = ToHandler;
5186 else
5187 return nullptr;
5188 }
5189 return CXXTryStmt::Create(Importer.getToContext(), ToTryLoc, ToTryBlock,
5190 ToHandlers);
5191 }
5192
VisitCXXForRangeStmt(CXXForRangeStmt * S)5193 Stmt *ASTNodeImporter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
5194 DeclStmt *ToRange =
5195 dyn_cast_or_null<DeclStmt>(Importer.Import(S->getRangeStmt()));
5196 if (!ToRange && S->getRangeStmt())
5197 return nullptr;
5198 DeclStmt *ToBegin =
5199 dyn_cast_or_null<DeclStmt>(Importer.Import(S->getBeginStmt()));
5200 if (!ToBegin && S->getBeginStmt())
5201 return nullptr;
5202 DeclStmt *ToEnd =
5203 dyn_cast_or_null<DeclStmt>(Importer.Import(S->getEndStmt()));
5204 if (!ToEnd && S->getEndStmt())
5205 return nullptr;
5206 Expr *ToCond = Importer.Import(S->getCond());
5207 if (!ToCond && S->getCond())
5208 return nullptr;
5209 Expr *ToInc = Importer.Import(S->getInc());
5210 if (!ToInc && S->getInc())
5211 return nullptr;
5212 DeclStmt *ToLoopVar =
5213 dyn_cast_or_null<DeclStmt>(Importer.Import(S->getLoopVarStmt()));
5214 if (!ToLoopVar && S->getLoopVarStmt())
5215 return nullptr;
5216 Stmt *ToBody = Importer.Import(S->getBody());
5217 if (!ToBody && S->getBody())
5218 return nullptr;
5219 SourceLocation ToForLoc = Importer.Import(S->getForLoc());
5220 SourceLocation ToCoawaitLoc = Importer.Import(S->getCoawaitLoc());
5221 SourceLocation ToColonLoc = Importer.Import(S->getColonLoc());
5222 SourceLocation ToRParenLoc = Importer.Import(S->getRParenLoc());
5223 return new (Importer.getToContext()) CXXForRangeStmt(ToRange, ToBegin, ToEnd,
5224 ToCond, ToInc,
5225 ToLoopVar, ToBody,
5226 ToForLoc, ToCoawaitLoc,
5227 ToColonLoc, ToRParenLoc);
5228 }
5229
VisitObjCForCollectionStmt(ObjCForCollectionStmt * S)5230 Stmt *ASTNodeImporter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
5231 Stmt *ToElem = Importer.Import(S->getElement());
5232 if (!ToElem && S->getElement())
5233 return nullptr;
5234 Expr *ToCollect = Importer.Import(S->getCollection());
5235 if (!ToCollect && S->getCollection())
5236 return nullptr;
5237 Stmt *ToBody = Importer.Import(S->getBody());
5238 if (!ToBody && S->getBody())
5239 return nullptr;
5240 SourceLocation ToForLoc = Importer.Import(S->getForLoc());
5241 SourceLocation ToRParenLoc = Importer.Import(S->getRParenLoc());
5242 return new (Importer.getToContext()) ObjCForCollectionStmt(ToElem,
5243 ToCollect,
5244 ToBody, ToForLoc,
5245 ToRParenLoc);
5246 }
5247
VisitObjCAtCatchStmt(ObjCAtCatchStmt * S)5248 Stmt *ASTNodeImporter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
5249 SourceLocation ToAtCatchLoc = Importer.Import(S->getAtCatchLoc());
5250 SourceLocation ToRParenLoc = Importer.Import(S->getRParenLoc());
5251 VarDecl *ToExceptionDecl = nullptr;
5252 if (VarDecl *FromExceptionDecl = S->getCatchParamDecl()) {
5253 ToExceptionDecl =
5254 dyn_cast_or_null<VarDecl>(Importer.Import(FromExceptionDecl));
5255 if (!ToExceptionDecl)
5256 return nullptr;
5257 }
5258 Stmt *ToBody = Importer.Import(S->getCatchBody());
5259 if (!ToBody && S->getCatchBody())
5260 return nullptr;
5261 return new (Importer.getToContext()) ObjCAtCatchStmt(ToAtCatchLoc,
5262 ToRParenLoc,
5263 ToExceptionDecl,
5264 ToBody);
5265 }
5266
VisitObjCAtFinallyStmt(ObjCAtFinallyStmt * S)5267 Stmt *ASTNodeImporter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
5268 SourceLocation ToAtFinallyLoc = Importer.Import(S->getAtFinallyLoc());
5269 Stmt *ToAtFinallyStmt = Importer.Import(S->getFinallyBody());
5270 if (!ToAtFinallyStmt && S->getFinallyBody())
5271 return nullptr;
5272 return new (Importer.getToContext()) ObjCAtFinallyStmt(ToAtFinallyLoc,
5273 ToAtFinallyStmt);
5274 }
5275
VisitObjCAtTryStmt(ObjCAtTryStmt * S)5276 Stmt *ASTNodeImporter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
5277 SourceLocation ToAtTryLoc = Importer.Import(S->getAtTryLoc());
5278 Stmt *ToAtTryStmt = Importer.Import(S->getTryBody());
5279 if (!ToAtTryStmt && S->getTryBody())
5280 return nullptr;
5281 SmallVector<Stmt *, 1> ToCatchStmts(S->getNumCatchStmts());
5282 for (unsigned CI = 0, CE = S->getNumCatchStmts(); CI != CE; ++CI) {
5283 ObjCAtCatchStmt *FromCatchStmt = S->getCatchStmt(CI);
5284 if (Stmt *ToCatchStmt = Importer.Import(FromCatchStmt))
5285 ToCatchStmts[CI] = ToCatchStmt;
5286 else
5287 return nullptr;
5288 }
5289 Stmt *ToAtFinallyStmt = Importer.Import(S->getFinallyStmt());
5290 if (!ToAtFinallyStmt && S->getFinallyStmt())
5291 return nullptr;
5292 return ObjCAtTryStmt::Create(Importer.getToContext(),
5293 ToAtTryLoc, ToAtTryStmt,
5294 ToCatchStmts.begin(), ToCatchStmts.size(),
5295 ToAtFinallyStmt);
5296 }
5297
VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt * S)5298 Stmt *ASTNodeImporter::VisitObjCAtSynchronizedStmt
5299 (ObjCAtSynchronizedStmt *S) {
5300 SourceLocation ToAtSynchronizedLoc =
5301 Importer.Import(S->getAtSynchronizedLoc());
5302 Expr *ToSynchExpr = Importer.Import(S->getSynchExpr());
5303 if (!ToSynchExpr && S->getSynchExpr())
5304 return nullptr;
5305 Stmt *ToSynchBody = Importer.Import(S->getSynchBody());
5306 if (!ToSynchBody && S->getSynchBody())
5307 return nullptr;
5308 return new (Importer.getToContext()) ObjCAtSynchronizedStmt(
5309 ToAtSynchronizedLoc, ToSynchExpr, ToSynchBody);
5310 }
5311
VisitObjCAtThrowStmt(ObjCAtThrowStmt * S)5312 Stmt *ASTNodeImporter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
5313 SourceLocation ToAtThrowLoc = Importer.Import(S->getThrowLoc());
5314 Expr *ToThrow = Importer.Import(S->getThrowExpr());
5315 if (!ToThrow && S->getThrowExpr())
5316 return nullptr;
5317 return new (Importer.getToContext()) ObjCAtThrowStmt(ToAtThrowLoc, ToThrow);
5318 }
5319
VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt * S)5320 Stmt *ASTNodeImporter::VisitObjCAutoreleasePoolStmt
5321 (ObjCAutoreleasePoolStmt *S) {
5322 SourceLocation ToAtLoc = Importer.Import(S->getAtLoc());
5323 Stmt *ToSubStmt = Importer.Import(S->getSubStmt());
5324 if (!ToSubStmt && S->getSubStmt())
5325 return nullptr;
5326 return new (Importer.getToContext()) ObjCAutoreleasePoolStmt(ToAtLoc,
5327 ToSubStmt);
5328 }
5329
5330 //----------------------------------------------------------------------------
5331 // Import Expressions
5332 //----------------------------------------------------------------------------
VisitExpr(Expr * E)5333 Expr *ASTNodeImporter::VisitExpr(Expr *E) {
5334 Importer.FromDiag(E->getLocStart(), diag::err_unsupported_ast_node)
5335 << E->getStmtClassName();
5336 return nullptr;
5337 }
5338
VisitVAArgExpr(VAArgExpr * E)5339 Expr *ASTNodeImporter::VisitVAArgExpr(VAArgExpr *E) {
5340 QualType T = Importer.Import(E->getType());
5341 if (T.isNull())
5342 return nullptr;
5343
5344 Expr *SubExpr = Importer.Import(E->getSubExpr());
5345 if (!SubExpr && E->getSubExpr())
5346 return nullptr;
5347
5348 TypeSourceInfo *TInfo = Importer.Import(E->getWrittenTypeInfo());
5349 if (!TInfo)
5350 return nullptr;
5351
5352 return new (Importer.getToContext()) VAArgExpr(
5353 Importer.Import(E->getBuiltinLoc()), SubExpr, TInfo,
5354 Importer.Import(E->getRParenLoc()), T, E->isMicrosoftABI());
5355 }
5356
5357
VisitGNUNullExpr(GNUNullExpr * E)5358 Expr *ASTNodeImporter::VisitGNUNullExpr(GNUNullExpr *E) {
5359 QualType T = Importer.Import(E->getType());
5360 if (T.isNull())
5361 return nullptr;
5362
5363 return new (Importer.getToContext()) GNUNullExpr(
5364 T, Importer.Import(E->getExprLoc()));
5365 }
5366
VisitPredefinedExpr(PredefinedExpr * E)5367 Expr *ASTNodeImporter::VisitPredefinedExpr(PredefinedExpr *E) {
5368 QualType T = Importer.Import(E->getType());
5369 if (T.isNull())
5370 return nullptr;
5371
5372 StringLiteral *SL = cast_or_null<StringLiteral>(
5373 Importer.Import(E->getFunctionName()));
5374 if (!SL && E->getFunctionName())
5375 return nullptr;
5376
5377 return new (Importer.getToContext()) PredefinedExpr(
5378 Importer.Import(E->getExprLoc()), T, E->getIdentType(), SL);
5379 }
5380
VisitDeclRefExpr(DeclRefExpr * E)5381 Expr *ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) {
5382 ValueDecl *ToD = cast_or_null<ValueDecl>(Importer.Import(E->getDecl()));
5383 if (!ToD)
5384 return nullptr;
5385
5386 NamedDecl *FoundD = nullptr;
5387 if (E->getDecl() != E->getFoundDecl()) {
5388 FoundD = cast_or_null<NamedDecl>(Importer.Import(E->getFoundDecl()));
5389 if (!FoundD)
5390 return nullptr;
5391 }
5392
5393 QualType T = Importer.Import(E->getType());
5394 if (T.isNull())
5395 return nullptr;
5396
5397 DeclRefExpr *DRE = DeclRefExpr::Create(Importer.getToContext(),
5398 Importer.Import(E->getQualifierLoc()),
5399 Importer.Import(E->getTemplateKeywordLoc()),
5400 ToD,
5401 E->refersToEnclosingVariableOrCapture(),
5402 Importer.Import(E->getLocation()),
5403 T, E->getValueKind(),
5404 FoundD,
5405 /*FIXME:TemplateArgs=*/nullptr);
5406 if (E->hadMultipleCandidates())
5407 DRE->setHadMultipleCandidates(true);
5408 return DRE;
5409 }
5410
VisitImplicitValueInitExpr(ImplicitValueInitExpr * E)5411 Expr *ASTNodeImporter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
5412 QualType T = Importer.Import(E->getType());
5413 if (T.isNull())
5414 return NULL;
5415
5416 return new (Importer.getToContext()) ImplicitValueInitExpr(T);
5417 }
5418
5419 ASTNodeImporter::Designator
ImportDesignator(const Designator & D)5420 ASTNodeImporter::ImportDesignator(const Designator &D) {
5421 if (D.isFieldDesignator()) {
5422 IdentifierInfo *ToFieldName = Importer.Import(D.getFieldName());
5423 // Caller checks for import error
5424 return Designator(ToFieldName, Importer.Import(D.getDotLoc()),
5425 Importer.Import(D.getFieldLoc()));
5426 }
5427 if (D.isArrayDesignator())
5428 return Designator(D.getFirstExprIndex(),
5429 Importer.Import(D.getLBracketLoc()),
5430 Importer.Import(D.getRBracketLoc()));
5431
5432 assert(D.isArrayRangeDesignator());
5433 return Designator(D.getFirstExprIndex(),
5434 Importer.Import(D.getLBracketLoc()),
5435 Importer.Import(D.getEllipsisLoc()),
5436 Importer.Import(D.getRBracketLoc()));
5437 }
5438
5439
VisitDesignatedInitExpr(DesignatedInitExpr * DIE)5440 Expr *ASTNodeImporter::VisitDesignatedInitExpr(DesignatedInitExpr *DIE) {
5441 Expr *Init = cast_or_null<Expr>(Importer.Import(DIE->getInit()));
5442 if (!Init)
5443 return nullptr;
5444
5445 SmallVector<Expr *, 4> IndexExprs(DIE->getNumSubExprs() - 1);
5446 // List elements from the second, the first is Init itself
5447 for (unsigned I = 1, E = DIE->getNumSubExprs(); I < E; I++) {
5448 if (Expr *Arg = cast_or_null<Expr>(Importer.Import(DIE->getSubExpr(I))))
5449 IndexExprs[I - 1] = Arg;
5450 else
5451 return nullptr;
5452 }
5453
5454 SmallVector<Designator, 4> Designators(DIE->size());
5455 llvm::transform(DIE->designators(), Designators.begin(),
5456 [this](const Designator &D) -> Designator {
5457 return ImportDesignator(D);
5458 });
5459
5460 for (const Designator &D : DIE->designators())
5461 if (D.isFieldDesignator() && !D.getFieldName())
5462 return nullptr;
5463
5464 return DesignatedInitExpr::Create(
5465 Importer.getToContext(), Designators,
5466 IndexExprs, Importer.Import(DIE->getEqualOrColonLoc()),
5467 DIE->usesGNUSyntax(), Init);
5468 }
5469
VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr * E)5470 Expr *ASTNodeImporter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
5471 QualType T = Importer.Import(E->getType());
5472 if (T.isNull())
5473 return nullptr;
5474
5475 return new (Importer.getToContext())
5476 CXXNullPtrLiteralExpr(T, Importer.Import(E->getLocation()));
5477 }
5478
VisitIntegerLiteral(IntegerLiteral * E)5479 Expr *ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) {
5480 QualType T = Importer.Import(E->getType());
5481 if (T.isNull())
5482 return nullptr;
5483
5484 return IntegerLiteral::Create(Importer.getToContext(),
5485 E->getValue(), T,
5486 Importer.Import(E->getLocation()));
5487 }
5488
VisitFloatingLiteral(FloatingLiteral * E)5489 Expr *ASTNodeImporter::VisitFloatingLiteral(FloatingLiteral *E) {
5490 QualType T = Importer.Import(E->getType());
5491 if (T.isNull())
5492 return nullptr;
5493
5494 return FloatingLiteral::Create(Importer.getToContext(),
5495 E->getValue(), E->isExact(), T,
5496 Importer.Import(E->getLocation()));
5497 }
5498
VisitCharacterLiteral(CharacterLiteral * E)5499 Expr *ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) {
5500 QualType T = Importer.Import(E->getType());
5501 if (T.isNull())
5502 return nullptr;
5503
5504 return new (Importer.getToContext()) CharacterLiteral(E->getValue(),
5505 E->getKind(), T,
5506 Importer.Import(E->getLocation()));
5507 }
5508
VisitStringLiteral(StringLiteral * E)5509 Expr *ASTNodeImporter::VisitStringLiteral(StringLiteral *E) {
5510 QualType T = Importer.Import(E->getType());
5511 if (T.isNull())
5512 return nullptr;
5513
5514 SmallVector<SourceLocation, 4> Locations(E->getNumConcatenated());
5515 ImportArray(E->tokloc_begin(), E->tokloc_end(), Locations.begin());
5516
5517 return StringLiteral::Create(Importer.getToContext(), E->getBytes(),
5518 E->getKind(), E->isPascal(), T,
5519 Locations.data(), Locations.size());
5520 }
5521
VisitCompoundLiteralExpr(CompoundLiteralExpr * E)5522 Expr *ASTNodeImporter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
5523 QualType T = Importer.Import(E->getType());
5524 if (T.isNull())
5525 return nullptr;
5526
5527 TypeSourceInfo *TInfo = Importer.Import(E->getTypeSourceInfo());
5528 if (!TInfo)
5529 return nullptr;
5530
5531 Expr *Init = Importer.Import(E->getInitializer());
5532 if (!Init)
5533 return nullptr;
5534
5535 return new (Importer.getToContext()) CompoundLiteralExpr(
5536 Importer.Import(E->getLParenLoc()), TInfo, T, E->getValueKind(),
5537 Init, E->isFileScope());
5538 }
5539
VisitAtomicExpr(AtomicExpr * E)5540 Expr *ASTNodeImporter::VisitAtomicExpr(AtomicExpr *E) {
5541 QualType T = Importer.Import(E->getType());
5542 if (T.isNull())
5543 return nullptr;
5544
5545 SmallVector<Expr *, 6> Exprs(E->getNumSubExprs());
5546 if (ImportArrayChecked(
5547 E->getSubExprs(), E->getSubExprs() + E->getNumSubExprs(),
5548 Exprs.begin()))
5549 return nullptr;
5550
5551 return new (Importer.getToContext()) AtomicExpr(
5552 Importer.Import(E->getBuiltinLoc()), Exprs, T, E->getOp(),
5553 Importer.Import(E->getRParenLoc()));
5554 }
5555
VisitAddrLabelExpr(AddrLabelExpr * E)5556 Expr *ASTNodeImporter::VisitAddrLabelExpr(AddrLabelExpr *E) {
5557 QualType T = Importer.Import(E->getType());
5558 if (T.isNull())
5559 return nullptr;
5560
5561 LabelDecl *ToLabel = cast_or_null<LabelDecl>(Importer.Import(E->getLabel()));
5562 if (!ToLabel)
5563 return nullptr;
5564
5565 return new (Importer.getToContext()) AddrLabelExpr(
5566 Importer.Import(E->getAmpAmpLoc()), Importer.Import(E->getLabelLoc()),
5567 ToLabel, T);
5568 }
5569
VisitParenExpr(ParenExpr * E)5570 Expr *ASTNodeImporter::VisitParenExpr(ParenExpr *E) {
5571 Expr *SubExpr = Importer.Import(E->getSubExpr());
5572 if (!SubExpr)
5573 return nullptr;
5574
5575 return new (Importer.getToContext())
5576 ParenExpr(Importer.Import(E->getLParen()),
5577 Importer.Import(E->getRParen()),
5578 SubExpr);
5579 }
5580
VisitParenListExpr(ParenListExpr * E)5581 Expr *ASTNodeImporter::VisitParenListExpr(ParenListExpr *E) {
5582 SmallVector<Expr *, 4> Exprs(E->getNumExprs());
5583 if (ImportArrayChecked(
5584 E->getExprs(), E->getExprs() + E->getNumExprs(), Exprs.begin()))
5585 return nullptr;
5586
5587 return new (Importer.getToContext()) ParenListExpr(
5588 Importer.getToContext(), Importer.Import(E->getLParenLoc()),
5589 Exprs, Importer.Import(E->getLParenLoc()));
5590 }
5591
VisitStmtExpr(StmtExpr * E)5592 Expr *ASTNodeImporter::VisitStmtExpr(StmtExpr *E) {
5593 QualType T = Importer.Import(E->getType());
5594 if (T.isNull())
5595 return nullptr;
5596
5597 CompoundStmt *ToSubStmt = cast_or_null<CompoundStmt>(
5598 Importer.Import(E->getSubStmt()));
5599 if (!ToSubStmt && E->getSubStmt())
5600 return nullptr;
5601
5602 return new (Importer.getToContext()) StmtExpr(ToSubStmt, T,
5603 Importer.Import(E->getLParenLoc()), Importer.Import(E->getRParenLoc()));
5604 }
5605
VisitUnaryOperator(UnaryOperator * E)5606 Expr *ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) {
5607 QualType T = Importer.Import(E->getType());
5608 if (T.isNull())
5609 return nullptr;
5610
5611 Expr *SubExpr = Importer.Import(E->getSubExpr());
5612 if (!SubExpr)
5613 return nullptr;
5614
5615 return new (Importer.getToContext()) UnaryOperator(SubExpr, E->getOpcode(),
5616 T, E->getValueKind(),
5617 E->getObjectKind(),
5618 Importer.Import(E->getOperatorLoc()));
5619 }
5620
VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr * E)5621 Expr *ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr(
5622 UnaryExprOrTypeTraitExpr *E) {
5623 QualType ResultType = Importer.Import(E->getType());
5624
5625 if (E->isArgumentType()) {
5626 TypeSourceInfo *TInfo = Importer.Import(E->getArgumentTypeInfo());
5627 if (!TInfo)
5628 return nullptr;
5629
5630 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(),
5631 TInfo, ResultType,
5632 Importer.Import(E->getOperatorLoc()),
5633 Importer.Import(E->getRParenLoc()));
5634 }
5635
5636 Expr *SubExpr = Importer.Import(E->getArgumentExpr());
5637 if (!SubExpr)
5638 return nullptr;
5639
5640 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(),
5641 SubExpr, ResultType,
5642 Importer.Import(E->getOperatorLoc()),
5643 Importer.Import(E->getRParenLoc()));
5644 }
5645
VisitBinaryOperator(BinaryOperator * E)5646 Expr *ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) {
5647 QualType T = Importer.Import(E->getType());
5648 if (T.isNull())
5649 return nullptr;
5650
5651 Expr *LHS = Importer.Import(E->getLHS());
5652 if (!LHS)
5653 return nullptr;
5654
5655 Expr *RHS = Importer.Import(E->getRHS());
5656 if (!RHS)
5657 return nullptr;
5658
5659 return new (Importer.getToContext()) BinaryOperator(LHS, RHS, E->getOpcode(),
5660 T, E->getValueKind(),
5661 E->getObjectKind(),
5662 Importer.Import(E->getOperatorLoc()),
5663 E->isFPContractable());
5664 }
5665
VisitConditionalOperator(ConditionalOperator * E)5666 Expr *ASTNodeImporter::VisitConditionalOperator(ConditionalOperator *E) {
5667 QualType T = Importer.Import(E->getType());
5668 if (T.isNull())
5669 return nullptr;
5670
5671 Expr *ToLHS = Importer.Import(E->getLHS());
5672 if (!ToLHS)
5673 return nullptr;
5674
5675 Expr *ToRHS = Importer.Import(E->getRHS());
5676 if (!ToRHS)
5677 return nullptr;
5678
5679 Expr *ToCond = Importer.Import(E->getCond());
5680 if (!ToCond)
5681 return nullptr;
5682
5683 return new (Importer.getToContext()) ConditionalOperator(
5684 ToCond, Importer.Import(E->getQuestionLoc()),
5685 ToLHS, Importer.Import(E->getColonLoc()),
5686 ToRHS, T, E->getValueKind(), E->getObjectKind());
5687 }
5688
VisitBinaryConditionalOperator(BinaryConditionalOperator * E)5689 Expr *ASTNodeImporter::VisitBinaryConditionalOperator(
5690 BinaryConditionalOperator *E) {
5691 QualType T = Importer.Import(E->getType());
5692 if (T.isNull())
5693 return nullptr;
5694
5695 Expr *Common = Importer.Import(E->getCommon());
5696 if (!Common)
5697 return nullptr;
5698
5699 Expr *Cond = Importer.Import(E->getCond());
5700 if (!Cond)
5701 return nullptr;
5702
5703 OpaqueValueExpr *OpaqueValue = cast_or_null<OpaqueValueExpr>(
5704 Importer.Import(E->getOpaqueValue()));
5705 if (!OpaqueValue)
5706 return nullptr;
5707
5708 Expr *TrueExpr = Importer.Import(E->getTrueExpr());
5709 if (!TrueExpr)
5710 return nullptr;
5711
5712 Expr *FalseExpr = Importer.Import(E->getFalseExpr());
5713 if (!FalseExpr)
5714 return nullptr;
5715
5716 return new (Importer.getToContext()) BinaryConditionalOperator(
5717 Common, OpaqueValue, Cond, TrueExpr, FalseExpr,
5718 Importer.Import(E->getQuestionLoc()), Importer.Import(E->getColonLoc()),
5719 T, E->getValueKind(), E->getObjectKind());
5720 }
5721
VisitOpaqueValueExpr(OpaqueValueExpr * E)5722 Expr *ASTNodeImporter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
5723 QualType T = Importer.Import(E->getType());
5724 if (T.isNull())
5725 return nullptr;
5726
5727 Expr *SourceExpr = Importer.Import(E->getSourceExpr());
5728 if (!SourceExpr && E->getSourceExpr())
5729 return nullptr;
5730
5731 return new (Importer.getToContext()) OpaqueValueExpr(
5732 Importer.Import(E->getExprLoc()), T, E->getValueKind(),
5733 E->getObjectKind(), SourceExpr);
5734 }
5735
VisitCompoundAssignOperator(CompoundAssignOperator * E)5736 Expr *ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
5737 QualType T = Importer.Import(E->getType());
5738 if (T.isNull())
5739 return nullptr;
5740
5741 QualType CompLHSType = Importer.Import(E->getComputationLHSType());
5742 if (CompLHSType.isNull())
5743 return nullptr;
5744
5745 QualType CompResultType = Importer.Import(E->getComputationResultType());
5746 if (CompResultType.isNull())
5747 return nullptr;
5748
5749 Expr *LHS = Importer.Import(E->getLHS());
5750 if (!LHS)
5751 return nullptr;
5752
5753 Expr *RHS = Importer.Import(E->getRHS());
5754 if (!RHS)
5755 return nullptr;
5756
5757 return new (Importer.getToContext())
5758 CompoundAssignOperator(LHS, RHS, E->getOpcode(),
5759 T, E->getValueKind(),
5760 E->getObjectKind(),
5761 CompLHSType, CompResultType,
5762 Importer.Import(E->getOperatorLoc()),
5763 E->isFPContractable());
5764 }
5765
ImportCastPath(CastExpr * E,CXXCastPath & Path)5766 static bool ImportCastPath(CastExpr *E, CXXCastPath &Path) {
5767 if (E->path_empty()) return false;
5768
5769 // TODO: import cast paths
5770 return true;
5771 }
5772
VisitImplicitCastExpr(ImplicitCastExpr * E)5773 Expr *ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
5774 QualType T = Importer.Import(E->getType());
5775 if (T.isNull())
5776 return nullptr;
5777
5778 Expr *SubExpr = Importer.Import(E->getSubExpr());
5779 if (!SubExpr)
5780 return nullptr;
5781
5782 CXXCastPath BasePath;
5783 if (ImportCastPath(E, BasePath))
5784 return nullptr;
5785
5786 return ImplicitCastExpr::Create(Importer.getToContext(), T, E->getCastKind(),
5787 SubExpr, &BasePath, E->getValueKind());
5788 }
5789
VisitCStyleCastExpr(CStyleCastExpr * E)5790 Expr *ASTNodeImporter::VisitCStyleCastExpr(CStyleCastExpr *E) {
5791 QualType T = Importer.Import(E->getType());
5792 if (T.isNull())
5793 return nullptr;
5794
5795 Expr *SubExpr = Importer.Import(E->getSubExpr());
5796 if (!SubExpr)
5797 return nullptr;
5798
5799 TypeSourceInfo *TInfo = Importer.Import(E->getTypeInfoAsWritten());
5800 if (!TInfo && E->getTypeInfoAsWritten())
5801 return nullptr;
5802
5803 CXXCastPath BasePath;
5804 if (ImportCastPath(E, BasePath))
5805 return nullptr;
5806
5807 return CStyleCastExpr::Create(Importer.getToContext(), T,
5808 E->getValueKind(), E->getCastKind(),
5809 SubExpr, &BasePath, TInfo,
5810 Importer.Import(E->getLParenLoc()),
5811 Importer.Import(E->getRParenLoc()));
5812 }
5813
VisitCXXConstructExpr(CXXConstructExpr * E)5814 Expr *ASTNodeImporter::VisitCXXConstructExpr(CXXConstructExpr *E) {
5815 QualType T = Importer.Import(E->getType());
5816 if (T.isNull())
5817 return nullptr;
5818
5819 CXXConstructorDecl *ToCCD =
5820 dyn_cast_or_null<CXXConstructorDecl>(Importer.Import(E->getConstructor()));
5821 if (!ToCCD)
5822 return nullptr;
5823
5824 SmallVector<Expr *, 6> ToArgs(E->getNumArgs());
5825 if (ImportArrayChecked(E->getArgs(), E->getArgs() + E->getNumArgs(),
5826 ToArgs.begin()))
5827 return nullptr;
5828
5829 return CXXConstructExpr::Create(Importer.getToContext(), T,
5830 Importer.Import(E->getLocation()),
5831 ToCCD, E->isElidable(),
5832 ToArgs, E->hadMultipleCandidates(),
5833 E->isListInitialization(),
5834 E->isStdInitListInitialization(),
5835 E->requiresZeroInitialization(),
5836 E->getConstructionKind(),
5837 Importer.Import(E->getParenOrBraceRange()));
5838 }
5839
VisitCXXMemberCallExpr(CXXMemberCallExpr * E)5840 Expr *ASTNodeImporter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
5841 QualType T = Importer.Import(E->getType());
5842 if (T.isNull())
5843 return nullptr;
5844
5845 Expr *ToFn = Importer.Import(E->getCallee());
5846 if (!ToFn)
5847 return nullptr;
5848
5849 SmallVector<Expr *, 4> ToArgs(E->getNumArgs());
5850
5851 if (ImportArrayChecked(E->arg_begin(), E->arg_end(), ToArgs.begin()))
5852 return nullptr;
5853
5854 return new (Importer.getToContext()) CXXMemberCallExpr(
5855 Importer.getToContext(), ToFn, ToArgs, T, E->getValueKind(),
5856 Importer.Import(E->getRParenLoc()));
5857 }
5858
VisitCXXThisExpr(CXXThisExpr * E)5859 Expr *ASTNodeImporter::VisitCXXThisExpr(CXXThisExpr *E) {
5860 QualType T = Importer.Import(E->getType());
5861 if (T.isNull())
5862 return nullptr;
5863
5864 return new (Importer.getToContext())
5865 CXXThisExpr(Importer.Import(E->getLocation()), T, E->isImplicit());
5866 }
5867
VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr * E)5868 Expr *ASTNodeImporter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
5869 QualType T = Importer.Import(E->getType());
5870 if (T.isNull())
5871 return nullptr;
5872
5873 return new (Importer.getToContext())
5874 CXXBoolLiteralExpr(E->getValue(), T, Importer.Import(E->getLocation()));
5875 }
5876
5877
VisitMemberExpr(MemberExpr * E)5878 Expr *ASTNodeImporter::VisitMemberExpr(MemberExpr *E) {
5879 QualType T = Importer.Import(E->getType());
5880 if (T.isNull())
5881 return nullptr;
5882
5883 Expr *ToBase = Importer.Import(E->getBase());
5884 if (!ToBase && E->getBase())
5885 return nullptr;
5886
5887 ValueDecl *ToMember = dyn_cast<ValueDecl>(Importer.Import(E->getMemberDecl()));
5888 if (!ToMember && E->getMemberDecl())
5889 return nullptr;
5890
5891 DeclAccessPair ToFoundDecl = DeclAccessPair::make(
5892 dyn_cast<NamedDecl>(Importer.Import(E->getFoundDecl().getDecl())),
5893 E->getFoundDecl().getAccess());
5894
5895 DeclarationNameInfo ToMemberNameInfo(
5896 Importer.Import(E->getMemberNameInfo().getName()),
5897 Importer.Import(E->getMemberNameInfo().getLoc()));
5898
5899 if (E->hasExplicitTemplateArgs()) {
5900 return nullptr; // FIXME: handle template arguments
5901 }
5902
5903 return MemberExpr::Create(Importer.getToContext(), ToBase,
5904 E->isArrow(),
5905 Importer.Import(E->getOperatorLoc()),
5906 Importer.Import(E->getQualifierLoc()),
5907 Importer.Import(E->getTemplateKeywordLoc()),
5908 ToMember, ToFoundDecl, ToMemberNameInfo,
5909 nullptr, T, E->getValueKind(),
5910 E->getObjectKind());
5911 }
5912
VisitCallExpr(CallExpr * E)5913 Expr *ASTNodeImporter::VisitCallExpr(CallExpr *E) {
5914 QualType T = Importer.Import(E->getType());
5915 if (T.isNull())
5916 return nullptr;
5917
5918 Expr *ToCallee = Importer.Import(E->getCallee());
5919 if (!ToCallee && E->getCallee())
5920 return nullptr;
5921
5922 unsigned NumArgs = E->getNumArgs();
5923
5924 llvm::SmallVector<Expr *, 2> ToArgs(NumArgs);
5925
5926 for (unsigned ai = 0, ae = NumArgs; ai != ae; ++ai) {
5927 Expr *FromArg = E->getArg(ai);
5928 Expr *ToArg = Importer.Import(FromArg);
5929 if (!ToArg)
5930 return nullptr;
5931 ToArgs[ai] = ToArg;
5932 }
5933
5934 Expr **ToArgs_Copied = new (Importer.getToContext())
5935 Expr*[NumArgs];
5936
5937 for (unsigned ai = 0, ae = NumArgs; ai != ae; ++ai)
5938 ToArgs_Copied[ai] = ToArgs[ai];
5939
5940 return new (Importer.getToContext())
5941 CallExpr(Importer.getToContext(), ToCallee,
5942 llvm::makeArrayRef(ToArgs_Copied, NumArgs), T, E->getValueKind(),
5943 Importer.Import(E->getRParenLoc()));
5944 }
5945
VisitInitListExpr(InitListExpr * ILE)5946 Expr *ASTNodeImporter::VisitInitListExpr(InitListExpr *ILE) {
5947 QualType T = Importer.Import(ILE->getType());
5948 if (T.isNull())
5949 return nullptr;
5950
5951 llvm::SmallVector<Expr *, 4> Exprs(ILE->getNumInits());
5952 if (ImportArrayChecked(
5953 ILE->getInits(), ILE->getInits() + ILE->getNumInits(), Exprs.begin()))
5954 return nullptr;
5955
5956 ASTContext &ToCtx = Importer.getToContext();
5957 InitListExpr *To = new (ToCtx) InitListExpr(
5958 ToCtx, Importer.Import(ILE->getLBraceLoc()),
5959 Exprs, Importer.Import(ILE->getLBraceLoc()));
5960 To->setType(T);
5961
5962 if (ILE->hasArrayFiller()) {
5963 Expr *Filler = Importer.Import(ILE->getArrayFiller());
5964 if (!Filler)
5965 return nullptr;
5966 To->setArrayFiller(Filler);
5967 }
5968
5969 if (FieldDecl *FromFD = ILE->getInitializedFieldInUnion()) {
5970 FieldDecl *ToFD = cast_or_null<FieldDecl>(Importer.Import(FromFD));
5971 if (!ToFD)
5972 return nullptr;
5973 To->setInitializedFieldInUnion(ToFD);
5974 }
5975
5976 if (InitListExpr *SyntForm = ILE->getSyntacticForm()) {
5977 InitListExpr *ToSyntForm = cast_or_null<InitListExpr>(
5978 Importer.Import(SyntForm));
5979 if (!ToSyntForm)
5980 return nullptr;
5981 To->setSyntacticForm(ToSyntForm);
5982 }
5983
5984 To->sawArrayRangeDesignator(ILE->hadArrayRangeDesignator());
5985 To->setValueDependent(ILE->isValueDependent());
5986 To->setInstantiationDependent(ILE->isInstantiationDependent());
5987
5988 return To;
5989 }
5990
VisitCXXDefaultInitExpr(CXXDefaultInitExpr * DIE)5991 Expr *ASTNodeImporter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *DIE) {
5992 FieldDecl *ToField = llvm::dyn_cast_or_null<FieldDecl>(
5993 Importer.Import(DIE->getField()));
5994 if (!ToField && DIE->getField())
5995 return nullptr;
5996
5997 return CXXDefaultInitExpr::Create(
5998 Importer.getToContext(), Importer.Import(DIE->getLocStart()), ToField);
5999 }
6000
VisitCXXNamedCastExpr(CXXNamedCastExpr * E)6001 Expr *ASTNodeImporter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
6002 QualType ToType = Importer.Import(E->getType());
6003 if (ToType.isNull() && !E->getType().isNull())
6004 return nullptr;
6005 ExprValueKind VK = E->getValueKind();
6006 CastKind CK = E->getCastKind();
6007 Expr *ToOp = Importer.Import(E->getSubExpr());
6008 if (!ToOp && E->getSubExpr())
6009 return nullptr;
6010 CXXCastPath BasePath;
6011 if (ImportCastPath(E, BasePath))
6012 return nullptr;
6013 TypeSourceInfo *ToWritten = Importer.Import(E->getTypeInfoAsWritten());
6014 SourceLocation ToOperatorLoc = Importer.Import(E->getOperatorLoc());
6015 SourceLocation ToRParenLoc = Importer.Import(E->getRParenLoc());
6016 SourceRange ToAngleBrackets = Importer.Import(E->getAngleBrackets());
6017
6018 if (isa<CXXStaticCastExpr>(E)) {
6019 return CXXStaticCastExpr::Create(
6020 Importer.getToContext(), ToType, VK, CK, ToOp, &BasePath,
6021 ToWritten, ToOperatorLoc, ToRParenLoc, ToAngleBrackets);
6022 } else if (isa<CXXDynamicCastExpr>(E)) {
6023 return CXXDynamicCastExpr::Create(
6024 Importer.getToContext(), ToType, VK, CK, ToOp, &BasePath,
6025 ToWritten, ToOperatorLoc, ToRParenLoc, ToAngleBrackets);
6026 } else if (isa<CXXReinterpretCastExpr>(E)) {
6027 return CXXReinterpretCastExpr::Create(
6028 Importer.getToContext(), ToType, VK, CK, ToOp, &BasePath,
6029 ToWritten, ToOperatorLoc, ToRParenLoc, ToAngleBrackets);
6030 } else {
6031 return nullptr;
6032 }
6033 }
6034
ASTImporter(ASTContext & ToContext,FileManager & ToFileManager,ASTContext & FromContext,FileManager & FromFileManager,bool MinimalImport)6035 ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager,
6036 ASTContext &FromContext, FileManager &FromFileManager,
6037 bool MinimalImport)
6038 : ToContext(ToContext), FromContext(FromContext),
6039 ToFileManager(ToFileManager), FromFileManager(FromFileManager),
6040 Minimal(MinimalImport), LastDiagFromFrom(false)
6041 {
6042 ImportedDecls[FromContext.getTranslationUnitDecl()]
6043 = ToContext.getTranslationUnitDecl();
6044 }
6045
~ASTImporter()6046 ASTImporter::~ASTImporter() { }
6047
Import(QualType FromT)6048 QualType ASTImporter::Import(QualType FromT) {
6049 if (FromT.isNull())
6050 return QualType();
6051
6052 const Type *fromTy = FromT.getTypePtr();
6053
6054 // Check whether we've already imported this type.
6055 llvm::DenseMap<const Type *, const Type *>::iterator Pos
6056 = ImportedTypes.find(fromTy);
6057 if (Pos != ImportedTypes.end())
6058 return ToContext.getQualifiedType(Pos->second, FromT.getLocalQualifiers());
6059
6060 // Import the type
6061 ASTNodeImporter Importer(*this);
6062 QualType ToT = Importer.Visit(fromTy);
6063 if (ToT.isNull())
6064 return ToT;
6065
6066 // Record the imported type.
6067 ImportedTypes[fromTy] = ToT.getTypePtr();
6068
6069 return ToContext.getQualifiedType(ToT, FromT.getLocalQualifiers());
6070 }
6071
Import(TypeSourceInfo * FromTSI)6072 TypeSourceInfo *ASTImporter::Import(TypeSourceInfo *FromTSI) {
6073 if (!FromTSI)
6074 return FromTSI;
6075
6076 // FIXME: For now we just create a "trivial" type source info based
6077 // on the type and a single location. Implement a real version of this.
6078 QualType T = Import(FromTSI->getType());
6079 if (T.isNull())
6080 return nullptr;
6081
6082 return ToContext.getTrivialTypeSourceInfo(T,
6083 Import(FromTSI->getTypeLoc().getLocStart()));
6084 }
6085
GetAlreadyImportedOrNull(Decl * FromD)6086 Decl *ASTImporter::GetAlreadyImportedOrNull(Decl *FromD) {
6087 llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD);
6088 if (Pos != ImportedDecls.end()) {
6089 Decl *ToD = Pos->second;
6090 ASTNodeImporter(*this).ImportDefinitionIfNeeded(FromD, ToD);
6091 return ToD;
6092 } else {
6093 return nullptr;
6094 }
6095 }
6096
Import(Decl * FromD)6097 Decl *ASTImporter::Import(Decl *FromD) {
6098 if (!FromD)
6099 return nullptr;
6100
6101 ASTNodeImporter Importer(*this);
6102
6103 // Check whether we've already imported this declaration.
6104 llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD);
6105 if (Pos != ImportedDecls.end()) {
6106 Decl *ToD = Pos->second;
6107 Importer.ImportDefinitionIfNeeded(FromD, ToD);
6108 return ToD;
6109 }
6110
6111 // Import the type
6112 Decl *ToD = Importer.Visit(FromD);
6113 if (!ToD)
6114 return nullptr;
6115
6116 // Record the imported declaration.
6117 ImportedDecls[FromD] = ToD;
6118
6119 if (TagDecl *FromTag = dyn_cast<TagDecl>(FromD)) {
6120 // Keep track of anonymous tags that have an associated typedef.
6121 if (FromTag->getTypedefNameForAnonDecl())
6122 AnonTagsWithPendingTypedefs.push_back(FromTag);
6123 } else if (TypedefNameDecl *FromTypedef = dyn_cast<TypedefNameDecl>(FromD)) {
6124 // When we've finished transforming a typedef, see whether it was the
6125 // typedef for an anonymous tag.
6126 for (SmallVectorImpl<TagDecl *>::iterator
6127 FromTag = AnonTagsWithPendingTypedefs.begin(),
6128 FromTagEnd = AnonTagsWithPendingTypedefs.end();
6129 FromTag != FromTagEnd; ++FromTag) {
6130 if ((*FromTag)->getTypedefNameForAnonDecl() == FromTypedef) {
6131 if (TagDecl *ToTag = cast_or_null<TagDecl>(Import(*FromTag))) {
6132 // We found the typedef for an anonymous tag; link them.
6133 ToTag->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(ToD));
6134 AnonTagsWithPendingTypedefs.erase(FromTag);
6135 break;
6136 }
6137 }
6138 }
6139 }
6140
6141 return ToD;
6142 }
6143
ImportContext(DeclContext * FromDC)6144 DeclContext *ASTImporter::ImportContext(DeclContext *FromDC) {
6145 if (!FromDC)
6146 return FromDC;
6147
6148 DeclContext *ToDC = cast_or_null<DeclContext>(Import(cast<Decl>(FromDC)));
6149 if (!ToDC)
6150 return nullptr;
6151
6152 // When we're using a record/enum/Objective-C class/protocol as a context, we
6153 // need it to have a definition.
6154 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(ToDC)) {
6155 RecordDecl *FromRecord = cast<RecordDecl>(FromDC);
6156 if (ToRecord->isCompleteDefinition()) {
6157 // Do nothing.
6158 } else if (FromRecord->isCompleteDefinition()) {
6159 ASTNodeImporter(*this).ImportDefinition(FromRecord, ToRecord,
6160 ASTNodeImporter::IDK_Basic);
6161 } else {
6162 CompleteDecl(ToRecord);
6163 }
6164 } else if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(ToDC)) {
6165 EnumDecl *FromEnum = cast<EnumDecl>(FromDC);
6166 if (ToEnum->isCompleteDefinition()) {
6167 // Do nothing.
6168 } else if (FromEnum->isCompleteDefinition()) {
6169 ASTNodeImporter(*this).ImportDefinition(FromEnum, ToEnum,
6170 ASTNodeImporter::IDK_Basic);
6171 } else {
6172 CompleteDecl(ToEnum);
6173 }
6174 } else if (ObjCInterfaceDecl *ToClass = dyn_cast<ObjCInterfaceDecl>(ToDC)) {
6175 ObjCInterfaceDecl *FromClass = cast<ObjCInterfaceDecl>(FromDC);
6176 if (ToClass->getDefinition()) {
6177 // Do nothing.
6178 } else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) {
6179 ASTNodeImporter(*this).ImportDefinition(FromDef, ToClass,
6180 ASTNodeImporter::IDK_Basic);
6181 } else {
6182 CompleteDecl(ToClass);
6183 }
6184 } else if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(ToDC)) {
6185 ObjCProtocolDecl *FromProto = cast<ObjCProtocolDecl>(FromDC);
6186 if (ToProto->getDefinition()) {
6187 // Do nothing.
6188 } else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) {
6189 ASTNodeImporter(*this).ImportDefinition(FromDef, ToProto,
6190 ASTNodeImporter::IDK_Basic);
6191 } else {
6192 CompleteDecl(ToProto);
6193 }
6194 }
6195
6196 return ToDC;
6197 }
6198
Import(Expr * FromE)6199 Expr *ASTImporter::Import(Expr *FromE) {
6200 if (!FromE)
6201 return nullptr;
6202
6203 return cast_or_null<Expr>(Import(cast<Stmt>(FromE)));
6204 }
6205
Import(Stmt * FromS)6206 Stmt *ASTImporter::Import(Stmt *FromS) {
6207 if (!FromS)
6208 return nullptr;
6209
6210 // Check whether we've already imported this declaration.
6211 llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(FromS);
6212 if (Pos != ImportedStmts.end())
6213 return Pos->second;
6214
6215 // Import the type
6216 ASTNodeImporter Importer(*this);
6217 Stmt *ToS = Importer.Visit(FromS);
6218 if (!ToS)
6219 return nullptr;
6220
6221 // Record the imported declaration.
6222 ImportedStmts[FromS] = ToS;
6223 return ToS;
6224 }
6225
Import(NestedNameSpecifier * FromNNS)6226 NestedNameSpecifier *ASTImporter::Import(NestedNameSpecifier *FromNNS) {
6227 if (!FromNNS)
6228 return nullptr;
6229
6230 NestedNameSpecifier *prefix = Import(FromNNS->getPrefix());
6231
6232 switch (FromNNS->getKind()) {
6233 case NestedNameSpecifier::Identifier:
6234 if (IdentifierInfo *II = Import(FromNNS->getAsIdentifier())) {
6235 return NestedNameSpecifier::Create(ToContext, prefix, II);
6236 }
6237 return nullptr;
6238
6239 case NestedNameSpecifier::Namespace:
6240 if (NamespaceDecl *NS =
6241 cast<NamespaceDecl>(Import(FromNNS->getAsNamespace()))) {
6242 return NestedNameSpecifier::Create(ToContext, prefix, NS);
6243 }
6244 return nullptr;
6245
6246 case NestedNameSpecifier::NamespaceAlias:
6247 if (NamespaceAliasDecl *NSAD =
6248 cast<NamespaceAliasDecl>(Import(FromNNS->getAsNamespaceAlias()))) {
6249 return NestedNameSpecifier::Create(ToContext, prefix, NSAD);
6250 }
6251 return nullptr;
6252
6253 case NestedNameSpecifier::Global:
6254 return NestedNameSpecifier::GlobalSpecifier(ToContext);
6255
6256 case NestedNameSpecifier::Super:
6257 if (CXXRecordDecl *RD =
6258 cast<CXXRecordDecl>(Import(FromNNS->getAsRecordDecl()))) {
6259 return NestedNameSpecifier::SuperSpecifier(ToContext, RD);
6260 }
6261 return nullptr;
6262
6263 case NestedNameSpecifier::TypeSpec:
6264 case NestedNameSpecifier::TypeSpecWithTemplate: {
6265 QualType T = Import(QualType(FromNNS->getAsType(), 0u));
6266 if (!T.isNull()) {
6267 bool bTemplate = FromNNS->getKind() ==
6268 NestedNameSpecifier::TypeSpecWithTemplate;
6269 return NestedNameSpecifier::Create(ToContext, prefix,
6270 bTemplate, T.getTypePtr());
6271 }
6272 }
6273 return nullptr;
6274 }
6275
6276 llvm_unreachable("Invalid nested name specifier kind");
6277 }
6278
Import(NestedNameSpecifierLoc FromNNS)6279 NestedNameSpecifierLoc ASTImporter::Import(NestedNameSpecifierLoc FromNNS) {
6280 // FIXME: Implement!
6281 return NestedNameSpecifierLoc();
6282 }
6283
Import(TemplateName From)6284 TemplateName ASTImporter::Import(TemplateName From) {
6285 switch (From.getKind()) {
6286 case TemplateName::Template:
6287 if (TemplateDecl *ToTemplate
6288 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl())))
6289 return TemplateName(ToTemplate);
6290
6291 return TemplateName();
6292
6293 case TemplateName::OverloadedTemplate: {
6294 OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate();
6295 UnresolvedSet<2> ToTemplates;
6296 for (OverloadedTemplateStorage::iterator I = FromStorage->begin(),
6297 E = FromStorage->end();
6298 I != E; ++I) {
6299 if (NamedDecl *To = cast_or_null<NamedDecl>(Import(*I)))
6300 ToTemplates.addDecl(To);
6301 else
6302 return TemplateName();
6303 }
6304 return ToContext.getOverloadedTemplateName(ToTemplates.begin(),
6305 ToTemplates.end());
6306 }
6307
6308 case TemplateName::QualifiedTemplate: {
6309 QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName();
6310 NestedNameSpecifier *Qualifier = Import(QTN->getQualifier());
6311 if (!Qualifier)
6312 return TemplateName();
6313
6314 if (TemplateDecl *ToTemplate
6315 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl())))
6316 return ToContext.getQualifiedTemplateName(Qualifier,
6317 QTN->hasTemplateKeyword(),
6318 ToTemplate);
6319
6320 return TemplateName();
6321 }
6322
6323 case TemplateName::DependentTemplate: {
6324 DependentTemplateName *DTN = From.getAsDependentTemplateName();
6325 NestedNameSpecifier *Qualifier = Import(DTN->getQualifier());
6326 if (!Qualifier)
6327 return TemplateName();
6328
6329 if (DTN->isIdentifier()) {
6330 return ToContext.getDependentTemplateName(Qualifier,
6331 Import(DTN->getIdentifier()));
6332 }
6333
6334 return ToContext.getDependentTemplateName(Qualifier, DTN->getOperator());
6335 }
6336
6337 case TemplateName::SubstTemplateTemplateParm: {
6338 SubstTemplateTemplateParmStorage *subst
6339 = From.getAsSubstTemplateTemplateParm();
6340 TemplateTemplateParmDecl *param
6341 = cast_or_null<TemplateTemplateParmDecl>(Import(subst->getParameter()));
6342 if (!param)
6343 return TemplateName();
6344
6345 TemplateName replacement = Import(subst->getReplacement());
6346 if (replacement.isNull()) return TemplateName();
6347
6348 return ToContext.getSubstTemplateTemplateParm(param, replacement);
6349 }
6350
6351 case TemplateName::SubstTemplateTemplateParmPack: {
6352 SubstTemplateTemplateParmPackStorage *SubstPack
6353 = From.getAsSubstTemplateTemplateParmPack();
6354 TemplateTemplateParmDecl *Param
6355 = cast_or_null<TemplateTemplateParmDecl>(
6356 Import(SubstPack->getParameterPack()));
6357 if (!Param)
6358 return TemplateName();
6359
6360 ASTNodeImporter Importer(*this);
6361 TemplateArgument ArgPack
6362 = Importer.ImportTemplateArgument(SubstPack->getArgumentPack());
6363 if (ArgPack.isNull())
6364 return TemplateName();
6365
6366 return ToContext.getSubstTemplateTemplateParmPack(Param, ArgPack);
6367 }
6368 }
6369
6370 llvm_unreachable("Invalid template name kind");
6371 }
6372
Import(SourceLocation FromLoc)6373 SourceLocation ASTImporter::Import(SourceLocation FromLoc) {
6374 if (FromLoc.isInvalid())
6375 return SourceLocation();
6376
6377 SourceManager &FromSM = FromContext.getSourceManager();
6378
6379 // For now, map everything down to its spelling location, so that we
6380 // don't have to import macro expansions.
6381 // FIXME: Import macro expansions!
6382 FromLoc = FromSM.getSpellingLoc(FromLoc);
6383 std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc);
6384 SourceManager &ToSM = ToContext.getSourceManager();
6385 FileID ToFileID = Import(Decomposed.first);
6386 if (ToFileID.isInvalid())
6387 return SourceLocation();
6388 SourceLocation ret = ToSM.getLocForStartOfFile(ToFileID)
6389 .getLocWithOffset(Decomposed.second);
6390 return ret;
6391 }
6392
Import(SourceRange FromRange)6393 SourceRange ASTImporter::Import(SourceRange FromRange) {
6394 return SourceRange(Import(FromRange.getBegin()), Import(FromRange.getEnd()));
6395 }
6396
Import(FileID FromID)6397 FileID ASTImporter::Import(FileID FromID) {
6398 llvm::DenseMap<FileID, FileID>::iterator Pos
6399 = ImportedFileIDs.find(FromID);
6400 if (Pos != ImportedFileIDs.end())
6401 return Pos->second;
6402
6403 SourceManager &FromSM = FromContext.getSourceManager();
6404 SourceManager &ToSM = ToContext.getSourceManager();
6405 const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FromID);
6406 assert(FromSLoc.isFile() && "Cannot handle macro expansions yet");
6407
6408 // Include location of this file.
6409 SourceLocation ToIncludeLoc = Import(FromSLoc.getFile().getIncludeLoc());
6410
6411 // Map the FileID for to the "to" source manager.
6412 FileID ToID;
6413 const SrcMgr::ContentCache *Cache = FromSLoc.getFile().getContentCache();
6414 if (Cache->OrigEntry && Cache->OrigEntry->getDir()) {
6415 // FIXME: We probably want to use getVirtualFile(), so we don't hit the
6416 // disk again
6417 // FIXME: We definitely want to re-use the existing MemoryBuffer, rather
6418 // than mmap the files several times.
6419 const FileEntry *Entry = ToFileManager.getFile(Cache->OrigEntry->getName());
6420 if (!Entry)
6421 return FileID();
6422 ToID = ToSM.createFileID(Entry, ToIncludeLoc,
6423 FromSLoc.getFile().getFileCharacteristic());
6424 } else {
6425 // FIXME: We want to re-use the existing MemoryBuffer!
6426 const llvm::MemoryBuffer *
6427 FromBuf = Cache->getBuffer(FromContext.getDiagnostics(), FromSM);
6428 std::unique_ptr<llvm::MemoryBuffer> ToBuf
6429 = llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBuffer(),
6430 FromBuf->getBufferIdentifier());
6431 ToID = ToSM.createFileID(std::move(ToBuf),
6432 FromSLoc.getFile().getFileCharacteristic());
6433 }
6434
6435
6436 ImportedFileIDs[FromID] = ToID;
6437 return ToID;
6438 }
6439
Import(CXXCtorInitializer * From)6440 CXXCtorInitializer *ASTImporter::Import(CXXCtorInitializer *From) {
6441 Expr *ToExpr = Import(From->getInit());
6442 if (!ToExpr && From->getInit())
6443 return nullptr;
6444
6445 if (From->isBaseInitializer()) {
6446 TypeSourceInfo *ToTInfo = Import(From->getTypeSourceInfo());
6447 if (!ToTInfo && From->getTypeSourceInfo())
6448 return nullptr;
6449
6450 return new (ToContext) CXXCtorInitializer(
6451 ToContext, ToTInfo, From->isBaseVirtual(), Import(From->getLParenLoc()),
6452 ToExpr, Import(From->getRParenLoc()),
6453 From->isPackExpansion() ? Import(From->getEllipsisLoc())
6454 : SourceLocation());
6455 } else if (From->isMemberInitializer()) {
6456 FieldDecl *ToField =
6457 llvm::cast_or_null<FieldDecl>(Import(From->getMember()));
6458 if (!ToField && From->getMember())
6459 return nullptr;
6460
6461 return new (ToContext) CXXCtorInitializer(
6462 ToContext, ToField, Import(From->getMemberLocation()),
6463 Import(From->getLParenLoc()), ToExpr, Import(From->getRParenLoc()));
6464 } else if (From->isIndirectMemberInitializer()) {
6465 IndirectFieldDecl *ToIField = llvm::cast_or_null<IndirectFieldDecl>(
6466 Import(From->getIndirectMember()));
6467 if (!ToIField && From->getIndirectMember())
6468 return nullptr;
6469
6470 return new (ToContext) CXXCtorInitializer(
6471 ToContext, ToIField, Import(From->getMemberLocation()),
6472 Import(From->getLParenLoc()), ToExpr, Import(From->getRParenLoc()));
6473 } else if (From->isDelegatingInitializer()) {
6474 TypeSourceInfo *ToTInfo = Import(From->getTypeSourceInfo());
6475 if (!ToTInfo && From->getTypeSourceInfo())
6476 return nullptr;
6477
6478 return new (ToContext)
6479 CXXCtorInitializer(ToContext, ToTInfo, Import(From->getLParenLoc()),
6480 ToExpr, Import(From->getRParenLoc()));
6481 } else if (unsigned NumArrayIndices = From->getNumArrayIndices()) {
6482 FieldDecl *ToField =
6483 llvm::cast_or_null<FieldDecl>(Import(From->getMember()));
6484 if (!ToField && From->getMember())
6485 return nullptr;
6486
6487 SmallVector<VarDecl *, 4> ToAIs(NumArrayIndices);
6488
6489 for (unsigned AII = 0; AII < NumArrayIndices; ++AII) {
6490 VarDecl *ToArrayIndex =
6491 dyn_cast_or_null<VarDecl>(Import(From->getArrayIndex(AII)));
6492 if (!ToArrayIndex && From->getArrayIndex(AII))
6493 return nullptr;
6494 }
6495
6496 return CXXCtorInitializer::Create(
6497 ToContext, ToField, Import(From->getMemberLocation()),
6498 Import(From->getLParenLoc()), ToExpr, Import(From->getRParenLoc()),
6499 ToAIs.data(), NumArrayIndices);
6500 } else {
6501 return nullptr;
6502 }
6503 }
6504
6505
ImportDefinition(Decl * From)6506 void ASTImporter::ImportDefinition(Decl *From) {
6507 Decl *To = Import(From);
6508 if (!To)
6509 return;
6510
6511 if (DeclContext *FromDC = cast<DeclContext>(From)) {
6512 ASTNodeImporter Importer(*this);
6513
6514 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(To)) {
6515 if (!ToRecord->getDefinition()) {
6516 Importer.ImportDefinition(cast<RecordDecl>(FromDC), ToRecord,
6517 ASTNodeImporter::IDK_Everything);
6518 return;
6519 }
6520 }
6521
6522 if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(To)) {
6523 if (!ToEnum->getDefinition()) {
6524 Importer.ImportDefinition(cast<EnumDecl>(FromDC), ToEnum,
6525 ASTNodeImporter::IDK_Everything);
6526 return;
6527 }
6528 }
6529
6530 if (ObjCInterfaceDecl *ToIFace = dyn_cast<ObjCInterfaceDecl>(To)) {
6531 if (!ToIFace->getDefinition()) {
6532 Importer.ImportDefinition(cast<ObjCInterfaceDecl>(FromDC), ToIFace,
6533 ASTNodeImporter::IDK_Everything);
6534 return;
6535 }
6536 }
6537
6538 if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(To)) {
6539 if (!ToProto->getDefinition()) {
6540 Importer.ImportDefinition(cast<ObjCProtocolDecl>(FromDC), ToProto,
6541 ASTNodeImporter::IDK_Everything);
6542 return;
6543 }
6544 }
6545
6546 Importer.ImportDeclContext(FromDC, true);
6547 }
6548 }
6549
Import(DeclarationName FromName)6550 DeclarationName ASTImporter::Import(DeclarationName FromName) {
6551 if (!FromName)
6552 return DeclarationName();
6553
6554 switch (FromName.getNameKind()) {
6555 case DeclarationName::Identifier:
6556 return Import(FromName.getAsIdentifierInfo());
6557
6558 case DeclarationName::ObjCZeroArgSelector:
6559 case DeclarationName::ObjCOneArgSelector:
6560 case DeclarationName::ObjCMultiArgSelector:
6561 return Import(FromName.getObjCSelector());
6562
6563 case DeclarationName::CXXConstructorName: {
6564 QualType T = Import(FromName.getCXXNameType());
6565 if (T.isNull())
6566 return DeclarationName();
6567
6568 return ToContext.DeclarationNames.getCXXConstructorName(
6569 ToContext.getCanonicalType(T));
6570 }
6571
6572 case DeclarationName::CXXDestructorName: {
6573 QualType T = Import(FromName.getCXXNameType());
6574 if (T.isNull())
6575 return DeclarationName();
6576
6577 return ToContext.DeclarationNames.getCXXDestructorName(
6578 ToContext.getCanonicalType(T));
6579 }
6580
6581 case DeclarationName::CXXConversionFunctionName: {
6582 QualType T = Import(FromName.getCXXNameType());
6583 if (T.isNull())
6584 return DeclarationName();
6585
6586 return ToContext.DeclarationNames.getCXXConversionFunctionName(
6587 ToContext.getCanonicalType(T));
6588 }
6589
6590 case DeclarationName::CXXOperatorName:
6591 return ToContext.DeclarationNames.getCXXOperatorName(
6592 FromName.getCXXOverloadedOperator());
6593
6594 case DeclarationName::CXXLiteralOperatorName:
6595 return ToContext.DeclarationNames.getCXXLiteralOperatorName(
6596 Import(FromName.getCXXLiteralIdentifier()));
6597
6598 case DeclarationName::CXXUsingDirective:
6599 // FIXME: STATICS!
6600 return DeclarationName::getUsingDirectiveName();
6601 }
6602
6603 llvm_unreachable("Invalid DeclarationName Kind!");
6604 }
6605
Import(const IdentifierInfo * FromId)6606 IdentifierInfo *ASTImporter::Import(const IdentifierInfo *FromId) {
6607 if (!FromId)
6608 return nullptr;
6609
6610 IdentifierInfo *ToId = &ToContext.Idents.get(FromId->getName());
6611
6612 if (!ToId->getBuiltinID() && FromId->getBuiltinID())
6613 ToId->setBuiltinID(FromId->getBuiltinID());
6614
6615 return ToId;
6616 }
6617
Import(Selector FromSel)6618 Selector ASTImporter::Import(Selector FromSel) {
6619 if (FromSel.isNull())
6620 return Selector();
6621
6622 SmallVector<IdentifierInfo *, 4> Idents;
6623 Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(0)));
6624 for (unsigned I = 1, N = FromSel.getNumArgs(); I < N; ++I)
6625 Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(I)));
6626 return ToContext.Selectors.getSelector(FromSel.getNumArgs(), Idents.data());
6627 }
6628
HandleNameConflict(DeclarationName Name,DeclContext * DC,unsigned IDNS,NamedDecl ** Decls,unsigned NumDecls)6629 DeclarationName ASTImporter::HandleNameConflict(DeclarationName Name,
6630 DeclContext *DC,
6631 unsigned IDNS,
6632 NamedDecl **Decls,
6633 unsigned NumDecls) {
6634 return Name;
6635 }
6636
ToDiag(SourceLocation Loc,unsigned DiagID)6637 DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) {
6638 if (LastDiagFromFrom)
6639 ToContext.getDiagnostics().notePriorDiagnosticFrom(
6640 FromContext.getDiagnostics());
6641 LastDiagFromFrom = false;
6642 return ToContext.getDiagnostics().Report(Loc, DiagID);
6643 }
6644
FromDiag(SourceLocation Loc,unsigned DiagID)6645 DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) {
6646 if (!LastDiagFromFrom)
6647 FromContext.getDiagnostics().notePriorDiagnosticFrom(
6648 ToContext.getDiagnostics());
6649 LastDiagFromFrom = true;
6650 return FromContext.getDiagnostics().Report(Loc, DiagID);
6651 }
6652
CompleteDecl(Decl * D)6653 void ASTImporter::CompleteDecl (Decl *D) {
6654 if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
6655 if (!ID->getDefinition())
6656 ID->startDefinition();
6657 }
6658 else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
6659 if (!PD->getDefinition())
6660 PD->startDefinition();
6661 }
6662 else if (TagDecl *TD = dyn_cast<TagDecl>(D)) {
6663 if (!TD->getDefinition() && !TD->isBeingDefined()) {
6664 TD->startDefinition();
6665 TD->setCompleteDefinition(true);
6666 }
6667 }
6668 else {
6669 assert (0 && "CompleteDecl called on a Decl that can't be completed");
6670 }
6671 }
6672
Imported(Decl * From,Decl * To)6673 Decl *ASTImporter::Imported(Decl *From, Decl *To) {
6674 if (From->hasAttrs()) {
6675 for (Attr *FromAttr : From->getAttrs())
6676 To->addAttr(FromAttr->clone(To->getASTContext()));
6677 }
6678 if (From->isUsed()) {
6679 To->setIsUsed();
6680 }
6681 if (From->isImplicit()) {
6682 To->setImplicit();
6683 }
6684 ImportedDecls[From] = To;
6685 return To;
6686 }
6687
IsStructurallyEquivalent(QualType From,QualType To,bool Complain)6688 bool ASTImporter::IsStructurallyEquivalent(QualType From, QualType To,
6689 bool Complain) {
6690 llvm::DenseMap<const Type *, const Type *>::iterator Pos
6691 = ImportedTypes.find(From.getTypePtr());
6692 if (Pos != ImportedTypes.end() && ToContext.hasSameType(Import(From), To))
6693 return true;
6694
6695 StructuralEquivalenceContext Ctx(FromContext, ToContext, NonEquivalentDecls,
6696 false, Complain);
6697 return Ctx.IsStructurallyEquivalent(From, To);
6698 }
6699