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 16 #include "clang/AST/ASTContext.h" 17 #include "clang/AST/ASTDiagnostic.h" 18 #include "clang/AST/DeclCXX.h" 19 #include "clang/AST/DeclObjC.h" 20 #include "clang/AST/DeclVisitor.h" 21 #include "clang/AST/StmtVisitor.h" 22 #include "clang/AST/TypeVisitor.h" 23 #include "clang/Basic/FileManager.h" 24 #include "clang/Basic/SourceManager.h" 25 #include "llvm/Support/MemoryBuffer.h" 26 #include <deque> 27 28 namespace clang { 29 class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, QualType>, 30 public DeclVisitor<ASTNodeImporter, Decl *>, 31 public StmtVisitor<ASTNodeImporter, Stmt *> { 32 ASTImporter &Importer; 33 34 public: 35 explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) { } 36 37 using TypeVisitor<ASTNodeImporter, QualType>::Visit; 38 using DeclVisitor<ASTNodeImporter, Decl *>::Visit; 39 using StmtVisitor<ASTNodeImporter, Stmt *>::Visit; 40 41 // Importing types 42 QualType VisitType(const Type *T); 43 QualType VisitBuiltinType(const BuiltinType *T); 44 QualType VisitComplexType(const ComplexType *T); 45 QualType VisitPointerType(const PointerType *T); 46 QualType VisitBlockPointerType(const BlockPointerType *T); 47 QualType VisitLValueReferenceType(const LValueReferenceType *T); 48 QualType VisitRValueReferenceType(const RValueReferenceType *T); 49 QualType VisitMemberPointerType(const MemberPointerType *T); 50 QualType VisitConstantArrayType(const ConstantArrayType *T); 51 QualType VisitIncompleteArrayType(const IncompleteArrayType *T); 52 QualType VisitVariableArrayType(const VariableArrayType *T); 53 // FIXME: DependentSizedArrayType 54 // FIXME: DependentSizedExtVectorType 55 QualType VisitVectorType(const VectorType *T); 56 QualType VisitExtVectorType(const ExtVectorType *T); 57 QualType VisitFunctionNoProtoType(const FunctionNoProtoType *T); 58 QualType VisitFunctionProtoType(const FunctionProtoType *T); 59 // FIXME: UnresolvedUsingType 60 QualType VisitParenType(const ParenType *T); 61 QualType VisitTypedefType(const TypedefType *T); 62 QualType VisitTypeOfExprType(const TypeOfExprType *T); 63 // FIXME: DependentTypeOfExprType 64 QualType VisitTypeOfType(const TypeOfType *T); 65 QualType VisitDecltypeType(const DecltypeType *T); 66 QualType VisitUnaryTransformType(const UnaryTransformType *T); 67 QualType VisitAutoType(const AutoType *T); 68 // FIXME: DependentDecltypeType 69 QualType VisitRecordType(const RecordType *T); 70 QualType VisitEnumType(const EnumType *T); 71 // FIXME: TemplateTypeParmType 72 // FIXME: SubstTemplateTypeParmType 73 QualType VisitTemplateSpecializationType(const TemplateSpecializationType *T); 74 QualType VisitElaboratedType(const ElaboratedType *T); 75 // FIXME: DependentNameType 76 // FIXME: DependentTemplateSpecializationType 77 QualType VisitObjCInterfaceType(const ObjCInterfaceType *T); 78 QualType VisitObjCObjectType(const ObjCObjectType *T); 79 QualType VisitObjCObjectPointerType(const ObjCObjectPointerType *T); 80 81 // Importing declarations 82 bool ImportDeclParts(NamedDecl *D, DeclContext *&DC, 83 DeclContext *&LexicalDC, DeclarationName &Name, 84 SourceLocation &Loc); 85 void ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD = 0); 86 void ImportDeclarationNameLoc(const DeclarationNameInfo &From, 87 DeclarationNameInfo& To); 88 void ImportDeclContext(DeclContext *FromDC, bool ForceImport = false); 89 90 /// \brief What we should import from the definition. 91 enum ImportDefinitionKind { 92 /// \brief Import the default subset of the definition, which might be 93 /// nothing (if minimal import is set) or might be everything (if minimal 94 /// import is not set). 95 IDK_Default, 96 /// \brief Import everything. 97 IDK_Everything, 98 /// \brief Import only the bare bones needed to establish a valid 99 /// DeclContext. 100 IDK_Basic 101 }; 102 103 bool shouldForceImportDeclContext(ImportDefinitionKind IDK) { 104 return IDK == IDK_Everything || 105 (IDK == IDK_Default && !Importer.isMinimalImport()); 106 } 107 108 bool ImportDefinition(RecordDecl *From, RecordDecl *To, 109 ImportDefinitionKind Kind = IDK_Default); 110 bool ImportDefinition(EnumDecl *From, EnumDecl *To, 111 ImportDefinitionKind Kind = IDK_Default); 112 bool ImportDefinition(ObjCInterfaceDecl *From, ObjCInterfaceDecl *To, 113 ImportDefinitionKind Kind = IDK_Default); 114 bool ImportDefinition(ObjCProtocolDecl *From, ObjCProtocolDecl *To, 115 ImportDefinitionKind Kind = IDK_Default); 116 TemplateParameterList *ImportTemplateParameterList( 117 TemplateParameterList *Params); 118 TemplateArgument ImportTemplateArgument(const TemplateArgument &From); 119 bool ImportTemplateArguments(const TemplateArgument *FromArgs, 120 unsigned NumFromArgs, 121 SmallVectorImpl<TemplateArgument> &ToArgs); 122 bool IsStructuralMatch(RecordDecl *FromRecord, RecordDecl *ToRecord, 123 bool Complain = true); 124 bool IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToRecord); 125 bool IsStructuralMatch(ClassTemplateDecl *From, ClassTemplateDecl *To); 126 Decl *VisitDecl(Decl *D); 127 Decl *VisitTranslationUnitDecl(TranslationUnitDecl *D); 128 Decl *VisitNamespaceDecl(NamespaceDecl *D); 129 Decl *VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias); 130 Decl *VisitTypedefDecl(TypedefDecl *D); 131 Decl *VisitTypeAliasDecl(TypeAliasDecl *D); 132 Decl *VisitEnumDecl(EnumDecl *D); 133 Decl *VisitRecordDecl(RecordDecl *D); 134 Decl *VisitEnumConstantDecl(EnumConstantDecl *D); 135 Decl *VisitFunctionDecl(FunctionDecl *D); 136 Decl *VisitCXXMethodDecl(CXXMethodDecl *D); 137 Decl *VisitCXXConstructorDecl(CXXConstructorDecl *D); 138 Decl *VisitCXXDestructorDecl(CXXDestructorDecl *D); 139 Decl *VisitCXXConversionDecl(CXXConversionDecl *D); 140 Decl *VisitFieldDecl(FieldDecl *D); 141 Decl *VisitIndirectFieldDecl(IndirectFieldDecl *D); 142 Decl *VisitObjCIvarDecl(ObjCIvarDecl *D); 143 Decl *VisitVarDecl(VarDecl *D); 144 Decl *VisitImplicitParamDecl(ImplicitParamDecl *D); 145 Decl *VisitParmVarDecl(ParmVarDecl *D); 146 Decl *VisitObjCMethodDecl(ObjCMethodDecl *D); 147 Decl *VisitObjCCategoryDecl(ObjCCategoryDecl *D); 148 Decl *VisitObjCProtocolDecl(ObjCProtocolDecl *D); 149 Decl *VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 150 Decl *VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 151 Decl *VisitObjCImplementationDecl(ObjCImplementationDecl *D); 152 Decl *VisitObjCPropertyDecl(ObjCPropertyDecl *D); 153 Decl *VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 154 Decl *VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 155 Decl *VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 156 Decl *VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 157 Decl *VisitClassTemplateDecl(ClassTemplateDecl *D); 158 Decl *VisitClassTemplateSpecializationDecl( 159 ClassTemplateSpecializationDecl *D); 160 161 // Importing statements 162 Stmt *VisitStmt(Stmt *S); 163 164 // Importing expressions 165 Expr *VisitExpr(Expr *E); 166 Expr *VisitDeclRefExpr(DeclRefExpr *E); 167 Expr *VisitIntegerLiteral(IntegerLiteral *E); 168 Expr *VisitCharacterLiteral(CharacterLiteral *E); 169 Expr *VisitParenExpr(ParenExpr *E); 170 Expr *VisitUnaryOperator(UnaryOperator *E); 171 Expr *VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E); 172 Expr *VisitBinaryOperator(BinaryOperator *E); 173 Expr *VisitCompoundAssignOperator(CompoundAssignOperator *E); 174 Expr *VisitImplicitCastExpr(ImplicitCastExpr *E); 175 Expr *VisitCStyleCastExpr(CStyleCastExpr *E); 176 }; 177 } 178 using namespace clang; 179 180 //---------------------------------------------------------------------------- 181 // Structural Equivalence 182 //---------------------------------------------------------------------------- 183 184 namespace { 185 struct StructuralEquivalenceContext { 186 /// \brief AST contexts for which we are checking structural equivalence. 187 ASTContext &C1, &C2; 188 189 /// \brief The set of "tentative" equivalences between two canonical 190 /// declarations, mapping from a declaration in the first context to the 191 /// declaration in the second context that we believe to be equivalent. 192 llvm::DenseMap<Decl *, Decl *> TentativeEquivalences; 193 194 /// \brief Queue of declarations in the first context whose equivalence 195 /// with a declaration in the second context still needs to be verified. 196 std::deque<Decl *> DeclsToCheck; 197 198 /// \brief Declaration (from, to) pairs that are known not to be equivalent 199 /// (which we have already complained about). 200 llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls; 201 202 /// \brief Whether we're being strict about the spelling of types when 203 /// unifying two types. 204 bool StrictTypeSpelling; 205 206 /// \brief Whether to complain about failures. 207 bool Complain; 208 209 StructuralEquivalenceContext(ASTContext &C1, ASTContext &C2, 210 llvm::DenseSet<std::pair<Decl *, Decl *> > &NonEquivalentDecls, 211 bool StrictTypeSpelling = false, 212 bool Complain = true) 213 : C1(C1), C2(C2), NonEquivalentDecls(NonEquivalentDecls), 214 StrictTypeSpelling(StrictTypeSpelling), Complain(Complain) { } 215 216 /// \brief Determine whether the two declarations are structurally 217 /// equivalent. 218 bool IsStructurallyEquivalent(Decl *D1, Decl *D2); 219 220 /// \brief Determine whether the two types are structurally equivalent. 221 bool IsStructurallyEquivalent(QualType T1, QualType T2); 222 223 private: 224 /// \brief Finish checking all of the structural equivalences. 225 /// 226 /// \returns true if an error occurred, false otherwise. 227 bool Finish(); 228 229 public: 230 DiagnosticBuilder Diag1(SourceLocation Loc, unsigned DiagID) { 231 if (!Complain) 232 return DiagnosticBuilder::getEmpty(); 233 234 return C1.getDiagnostics().Report(Loc, DiagID); 235 } 236 237 DiagnosticBuilder Diag2(SourceLocation Loc, unsigned DiagID) { 238 if (!Complain) 239 return DiagnosticBuilder::getEmpty(); 240 241 return C2.getDiagnostics().Report(Loc, DiagID); 242 } 243 }; 244 } 245 246 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 247 QualType T1, QualType T2); 248 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 249 Decl *D1, Decl *D2); 250 251 /// \brief Determine structural equivalence of two expressions. 252 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 253 Expr *E1, Expr *E2) { 254 if (!E1 || !E2) 255 return E1 == E2; 256 257 // FIXME: Actually perform a structural comparison! 258 return true; 259 } 260 261 /// \brief Determine whether two identifiers are equivalent. 262 static bool IsStructurallyEquivalent(const IdentifierInfo *Name1, 263 const IdentifierInfo *Name2) { 264 if (!Name1 || !Name2) 265 return Name1 == Name2; 266 267 return Name1->getName() == Name2->getName(); 268 } 269 270 /// \brief Determine whether two nested-name-specifiers are equivalent. 271 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 272 NestedNameSpecifier *NNS1, 273 NestedNameSpecifier *NNS2) { 274 // FIXME: Implement! 275 return true; 276 } 277 278 /// \brief Determine whether two template arguments are equivalent. 279 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 280 const TemplateArgument &Arg1, 281 const TemplateArgument &Arg2) { 282 if (Arg1.getKind() != Arg2.getKind()) 283 return false; 284 285 switch (Arg1.getKind()) { 286 case TemplateArgument::Null: 287 return true; 288 289 case TemplateArgument::Type: 290 return Context.IsStructurallyEquivalent(Arg1.getAsType(), Arg2.getAsType()); 291 292 case TemplateArgument::Integral: 293 if (!Context.IsStructurallyEquivalent(Arg1.getIntegralType(), 294 Arg2.getIntegralType())) 295 return false; 296 297 return llvm::APSInt::isSameValue(Arg1.getAsIntegral(), Arg2.getAsIntegral()); 298 299 case TemplateArgument::Declaration: 300 if (!Arg1.getAsDecl() || !Arg2.getAsDecl()) 301 return !Arg1.getAsDecl() && !Arg2.getAsDecl(); 302 return Context.IsStructurallyEquivalent(Arg1.getAsDecl(), Arg2.getAsDecl()); 303 304 case TemplateArgument::Template: 305 return IsStructurallyEquivalent(Context, 306 Arg1.getAsTemplate(), 307 Arg2.getAsTemplate()); 308 309 case TemplateArgument::TemplateExpansion: 310 return IsStructurallyEquivalent(Context, 311 Arg1.getAsTemplateOrTemplatePattern(), 312 Arg2.getAsTemplateOrTemplatePattern()); 313 314 case TemplateArgument::Expression: 315 return IsStructurallyEquivalent(Context, 316 Arg1.getAsExpr(), Arg2.getAsExpr()); 317 318 case TemplateArgument::Pack: 319 if (Arg1.pack_size() != Arg2.pack_size()) 320 return false; 321 322 for (unsigned I = 0, N = Arg1.pack_size(); I != N; ++I) 323 if (!IsStructurallyEquivalent(Context, 324 Arg1.pack_begin()[I], 325 Arg2.pack_begin()[I])) 326 return false; 327 328 return true; 329 } 330 331 llvm_unreachable("Invalid template argument kind"); 332 } 333 334 /// \brief Determine structural equivalence for the common part of array 335 /// types. 336 static bool IsArrayStructurallyEquivalent(StructuralEquivalenceContext &Context, 337 const ArrayType *Array1, 338 const ArrayType *Array2) { 339 if (!IsStructurallyEquivalent(Context, 340 Array1->getElementType(), 341 Array2->getElementType())) 342 return false; 343 if (Array1->getSizeModifier() != Array2->getSizeModifier()) 344 return false; 345 if (Array1->getIndexTypeQualifiers() != Array2->getIndexTypeQualifiers()) 346 return false; 347 348 return true; 349 } 350 351 /// \brief Determine structural equivalence of two types. 352 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 353 QualType T1, QualType T2) { 354 if (T1.isNull() || T2.isNull()) 355 return T1.isNull() && T2.isNull(); 356 357 if (!Context.StrictTypeSpelling) { 358 // We aren't being strict about token-to-token equivalence of types, 359 // so map down to the canonical type. 360 T1 = Context.C1.getCanonicalType(T1); 361 T2 = Context.C2.getCanonicalType(T2); 362 } 363 364 if (T1.getQualifiers() != T2.getQualifiers()) 365 return false; 366 367 Type::TypeClass TC = T1->getTypeClass(); 368 369 if (T1->getTypeClass() != T2->getTypeClass()) { 370 // Compare function types with prototypes vs. without prototypes as if 371 // both did not have prototypes. 372 if (T1->getTypeClass() == Type::FunctionProto && 373 T2->getTypeClass() == Type::FunctionNoProto) 374 TC = Type::FunctionNoProto; 375 else if (T1->getTypeClass() == Type::FunctionNoProto && 376 T2->getTypeClass() == Type::FunctionProto) 377 TC = Type::FunctionNoProto; 378 else 379 return false; 380 } 381 382 switch (TC) { 383 case Type::Builtin: 384 // FIXME: Deal with Char_S/Char_U. 385 if (cast<BuiltinType>(T1)->getKind() != cast<BuiltinType>(T2)->getKind()) 386 return false; 387 break; 388 389 case Type::Complex: 390 if (!IsStructurallyEquivalent(Context, 391 cast<ComplexType>(T1)->getElementType(), 392 cast<ComplexType>(T2)->getElementType())) 393 return false; 394 break; 395 396 case Type::Pointer: 397 if (!IsStructurallyEquivalent(Context, 398 cast<PointerType>(T1)->getPointeeType(), 399 cast<PointerType>(T2)->getPointeeType())) 400 return false; 401 break; 402 403 case Type::BlockPointer: 404 if (!IsStructurallyEquivalent(Context, 405 cast<BlockPointerType>(T1)->getPointeeType(), 406 cast<BlockPointerType>(T2)->getPointeeType())) 407 return false; 408 break; 409 410 case Type::LValueReference: 411 case Type::RValueReference: { 412 const ReferenceType *Ref1 = cast<ReferenceType>(T1); 413 const ReferenceType *Ref2 = cast<ReferenceType>(T2); 414 if (Ref1->isSpelledAsLValue() != Ref2->isSpelledAsLValue()) 415 return false; 416 if (Ref1->isInnerRef() != Ref2->isInnerRef()) 417 return false; 418 if (!IsStructurallyEquivalent(Context, 419 Ref1->getPointeeTypeAsWritten(), 420 Ref2->getPointeeTypeAsWritten())) 421 return false; 422 break; 423 } 424 425 case Type::MemberPointer: { 426 const MemberPointerType *MemPtr1 = cast<MemberPointerType>(T1); 427 const MemberPointerType *MemPtr2 = cast<MemberPointerType>(T2); 428 if (!IsStructurallyEquivalent(Context, 429 MemPtr1->getPointeeType(), 430 MemPtr2->getPointeeType())) 431 return false; 432 if (!IsStructurallyEquivalent(Context, 433 QualType(MemPtr1->getClass(), 0), 434 QualType(MemPtr2->getClass(), 0))) 435 return false; 436 break; 437 } 438 439 case Type::ConstantArray: { 440 const ConstantArrayType *Array1 = cast<ConstantArrayType>(T1); 441 const ConstantArrayType *Array2 = cast<ConstantArrayType>(T2); 442 if (!llvm::APInt::isSameValue(Array1->getSize(), Array2->getSize())) 443 return false; 444 445 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2)) 446 return false; 447 break; 448 } 449 450 case Type::IncompleteArray: 451 if (!IsArrayStructurallyEquivalent(Context, 452 cast<ArrayType>(T1), 453 cast<ArrayType>(T2))) 454 return false; 455 break; 456 457 case Type::VariableArray: { 458 const VariableArrayType *Array1 = cast<VariableArrayType>(T1); 459 const VariableArrayType *Array2 = cast<VariableArrayType>(T2); 460 if (!IsStructurallyEquivalent(Context, 461 Array1->getSizeExpr(), Array2->getSizeExpr())) 462 return false; 463 464 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2)) 465 return false; 466 467 break; 468 } 469 470 case Type::DependentSizedArray: { 471 const DependentSizedArrayType *Array1 = cast<DependentSizedArrayType>(T1); 472 const DependentSizedArrayType *Array2 = cast<DependentSizedArrayType>(T2); 473 if (!IsStructurallyEquivalent(Context, 474 Array1->getSizeExpr(), Array2->getSizeExpr())) 475 return false; 476 477 if (!IsArrayStructurallyEquivalent(Context, Array1, Array2)) 478 return false; 479 480 break; 481 } 482 483 case Type::DependentSizedExtVector: { 484 const DependentSizedExtVectorType *Vec1 485 = cast<DependentSizedExtVectorType>(T1); 486 const DependentSizedExtVectorType *Vec2 487 = cast<DependentSizedExtVectorType>(T2); 488 if (!IsStructurallyEquivalent(Context, 489 Vec1->getSizeExpr(), Vec2->getSizeExpr())) 490 return false; 491 if (!IsStructurallyEquivalent(Context, 492 Vec1->getElementType(), 493 Vec2->getElementType())) 494 return false; 495 break; 496 } 497 498 case Type::Vector: 499 case Type::ExtVector: { 500 const VectorType *Vec1 = cast<VectorType>(T1); 501 const VectorType *Vec2 = cast<VectorType>(T2); 502 if (!IsStructurallyEquivalent(Context, 503 Vec1->getElementType(), 504 Vec2->getElementType())) 505 return false; 506 if (Vec1->getNumElements() != Vec2->getNumElements()) 507 return false; 508 if (Vec1->getVectorKind() != Vec2->getVectorKind()) 509 return false; 510 break; 511 } 512 513 case Type::FunctionProto: { 514 const FunctionProtoType *Proto1 = cast<FunctionProtoType>(T1); 515 const FunctionProtoType *Proto2 = cast<FunctionProtoType>(T2); 516 if (Proto1->getNumArgs() != Proto2->getNumArgs()) 517 return false; 518 for (unsigned I = 0, N = Proto1->getNumArgs(); I != N; ++I) { 519 if (!IsStructurallyEquivalent(Context, 520 Proto1->getArgType(I), 521 Proto2->getArgType(I))) 522 return false; 523 } 524 if (Proto1->isVariadic() != Proto2->isVariadic()) 525 return false; 526 if (Proto1->getExceptionSpecType() != Proto2->getExceptionSpecType()) 527 return false; 528 if (Proto1->getExceptionSpecType() == EST_Dynamic) { 529 if (Proto1->getNumExceptions() != Proto2->getNumExceptions()) 530 return false; 531 for (unsigned I = 0, N = Proto1->getNumExceptions(); I != N; ++I) { 532 if (!IsStructurallyEquivalent(Context, 533 Proto1->getExceptionType(I), 534 Proto2->getExceptionType(I))) 535 return false; 536 } 537 } else if (Proto1->getExceptionSpecType() == EST_ComputedNoexcept) { 538 if (!IsStructurallyEquivalent(Context, 539 Proto1->getNoexceptExpr(), 540 Proto2->getNoexceptExpr())) 541 return false; 542 } 543 if (Proto1->getTypeQuals() != Proto2->getTypeQuals()) 544 return false; 545 546 // Fall through to check the bits common with FunctionNoProtoType. 547 } 548 549 case Type::FunctionNoProto: { 550 const FunctionType *Function1 = cast<FunctionType>(T1); 551 const FunctionType *Function2 = cast<FunctionType>(T2); 552 if (!IsStructurallyEquivalent(Context, 553 Function1->getResultType(), 554 Function2->getResultType())) 555 return false; 556 if (Function1->getExtInfo() != Function2->getExtInfo()) 557 return false; 558 break; 559 } 560 561 case Type::UnresolvedUsing: 562 if (!IsStructurallyEquivalent(Context, 563 cast<UnresolvedUsingType>(T1)->getDecl(), 564 cast<UnresolvedUsingType>(T2)->getDecl())) 565 return false; 566 567 break; 568 569 case Type::Attributed: 570 if (!IsStructurallyEquivalent(Context, 571 cast<AttributedType>(T1)->getModifiedType(), 572 cast<AttributedType>(T2)->getModifiedType())) 573 return false; 574 if (!IsStructurallyEquivalent(Context, 575 cast<AttributedType>(T1)->getEquivalentType(), 576 cast<AttributedType>(T2)->getEquivalentType())) 577 return false; 578 break; 579 580 case Type::Paren: 581 if (!IsStructurallyEquivalent(Context, 582 cast<ParenType>(T1)->getInnerType(), 583 cast<ParenType>(T2)->getInnerType())) 584 return false; 585 break; 586 587 case Type::Typedef: 588 if (!IsStructurallyEquivalent(Context, 589 cast<TypedefType>(T1)->getDecl(), 590 cast<TypedefType>(T2)->getDecl())) 591 return false; 592 break; 593 594 case Type::TypeOfExpr: 595 if (!IsStructurallyEquivalent(Context, 596 cast<TypeOfExprType>(T1)->getUnderlyingExpr(), 597 cast<TypeOfExprType>(T2)->getUnderlyingExpr())) 598 return false; 599 break; 600 601 case Type::TypeOf: 602 if (!IsStructurallyEquivalent(Context, 603 cast<TypeOfType>(T1)->getUnderlyingType(), 604 cast<TypeOfType>(T2)->getUnderlyingType())) 605 return false; 606 break; 607 608 case Type::UnaryTransform: 609 if (!IsStructurallyEquivalent(Context, 610 cast<UnaryTransformType>(T1)->getUnderlyingType(), 611 cast<UnaryTransformType>(T1)->getUnderlyingType())) 612 return false; 613 break; 614 615 case Type::Decltype: 616 if (!IsStructurallyEquivalent(Context, 617 cast<DecltypeType>(T1)->getUnderlyingExpr(), 618 cast<DecltypeType>(T2)->getUnderlyingExpr())) 619 return false; 620 break; 621 622 case Type::Auto: 623 if (!IsStructurallyEquivalent(Context, 624 cast<AutoType>(T1)->getDeducedType(), 625 cast<AutoType>(T2)->getDeducedType())) 626 return false; 627 break; 628 629 case Type::Record: 630 case Type::Enum: 631 if (!IsStructurallyEquivalent(Context, 632 cast<TagType>(T1)->getDecl(), 633 cast<TagType>(T2)->getDecl())) 634 return false; 635 break; 636 637 case Type::TemplateTypeParm: { 638 const TemplateTypeParmType *Parm1 = cast<TemplateTypeParmType>(T1); 639 const TemplateTypeParmType *Parm2 = cast<TemplateTypeParmType>(T2); 640 if (Parm1->getDepth() != Parm2->getDepth()) 641 return false; 642 if (Parm1->getIndex() != Parm2->getIndex()) 643 return false; 644 if (Parm1->isParameterPack() != Parm2->isParameterPack()) 645 return false; 646 647 // Names of template type parameters are never significant. 648 break; 649 } 650 651 case Type::SubstTemplateTypeParm: { 652 const SubstTemplateTypeParmType *Subst1 653 = cast<SubstTemplateTypeParmType>(T1); 654 const SubstTemplateTypeParmType *Subst2 655 = cast<SubstTemplateTypeParmType>(T2); 656 if (!IsStructurallyEquivalent(Context, 657 QualType(Subst1->getReplacedParameter(), 0), 658 QualType(Subst2->getReplacedParameter(), 0))) 659 return false; 660 if (!IsStructurallyEquivalent(Context, 661 Subst1->getReplacementType(), 662 Subst2->getReplacementType())) 663 return false; 664 break; 665 } 666 667 case Type::SubstTemplateTypeParmPack: { 668 const SubstTemplateTypeParmPackType *Subst1 669 = cast<SubstTemplateTypeParmPackType>(T1); 670 const SubstTemplateTypeParmPackType *Subst2 671 = cast<SubstTemplateTypeParmPackType>(T2); 672 if (!IsStructurallyEquivalent(Context, 673 QualType(Subst1->getReplacedParameter(), 0), 674 QualType(Subst2->getReplacedParameter(), 0))) 675 return false; 676 if (!IsStructurallyEquivalent(Context, 677 Subst1->getArgumentPack(), 678 Subst2->getArgumentPack())) 679 return false; 680 break; 681 } 682 case Type::TemplateSpecialization: { 683 const TemplateSpecializationType *Spec1 684 = cast<TemplateSpecializationType>(T1); 685 const TemplateSpecializationType *Spec2 686 = cast<TemplateSpecializationType>(T2); 687 if (!IsStructurallyEquivalent(Context, 688 Spec1->getTemplateName(), 689 Spec2->getTemplateName())) 690 return false; 691 if (Spec1->getNumArgs() != Spec2->getNumArgs()) 692 return false; 693 for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) { 694 if (!IsStructurallyEquivalent(Context, 695 Spec1->getArg(I), Spec2->getArg(I))) 696 return false; 697 } 698 break; 699 } 700 701 case Type::Elaborated: { 702 const ElaboratedType *Elab1 = cast<ElaboratedType>(T1); 703 const ElaboratedType *Elab2 = cast<ElaboratedType>(T2); 704 // CHECKME: what if a keyword is ETK_None or ETK_typename ? 705 if (Elab1->getKeyword() != Elab2->getKeyword()) 706 return false; 707 if (!IsStructurallyEquivalent(Context, 708 Elab1->getQualifier(), 709 Elab2->getQualifier())) 710 return false; 711 if (!IsStructurallyEquivalent(Context, 712 Elab1->getNamedType(), 713 Elab2->getNamedType())) 714 return false; 715 break; 716 } 717 718 case Type::InjectedClassName: { 719 const InjectedClassNameType *Inj1 = cast<InjectedClassNameType>(T1); 720 const InjectedClassNameType *Inj2 = cast<InjectedClassNameType>(T2); 721 if (!IsStructurallyEquivalent(Context, 722 Inj1->getInjectedSpecializationType(), 723 Inj2->getInjectedSpecializationType())) 724 return false; 725 break; 726 } 727 728 case Type::DependentName: { 729 const DependentNameType *Typename1 = cast<DependentNameType>(T1); 730 const DependentNameType *Typename2 = cast<DependentNameType>(T2); 731 if (!IsStructurallyEquivalent(Context, 732 Typename1->getQualifier(), 733 Typename2->getQualifier())) 734 return false; 735 if (!IsStructurallyEquivalent(Typename1->getIdentifier(), 736 Typename2->getIdentifier())) 737 return false; 738 739 break; 740 } 741 742 case Type::DependentTemplateSpecialization: { 743 const DependentTemplateSpecializationType *Spec1 = 744 cast<DependentTemplateSpecializationType>(T1); 745 const DependentTemplateSpecializationType *Spec2 = 746 cast<DependentTemplateSpecializationType>(T2); 747 if (!IsStructurallyEquivalent(Context, 748 Spec1->getQualifier(), 749 Spec2->getQualifier())) 750 return false; 751 if (!IsStructurallyEquivalent(Spec1->getIdentifier(), 752 Spec2->getIdentifier())) 753 return false; 754 if (Spec1->getNumArgs() != Spec2->getNumArgs()) 755 return false; 756 for (unsigned I = 0, N = Spec1->getNumArgs(); I != N; ++I) { 757 if (!IsStructurallyEquivalent(Context, 758 Spec1->getArg(I), Spec2->getArg(I))) 759 return false; 760 } 761 break; 762 } 763 764 case Type::PackExpansion: 765 if (!IsStructurallyEquivalent(Context, 766 cast<PackExpansionType>(T1)->getPattern(), 767 cast<PackExpansionType>(T2)->getPattern())) 768 return false; 769 break; 770 771 case Type::ObjCInterface: { 772 const ObjCInterfaceType *Iface1 = cast<ObjCInterfaceType>(T1); 773 const ObjCInterfaceType *Iface2 = cast<ObjCInterfaceType>(T2); 774 if (!IsStructurallyEquivalent(Context, 775 Iface1->getDecl(), Iface2->getDecl())) 776 return false; 777 break; 778 } 779 780 case Type::ObjCObject: { 781 const ObjCObjectType *Obj1 = cast<ObjCObjectType>(T1); 782 const ObjCObjectType *Obj2 = cast<ObjCObjectType>(T2); 783 if (!IsStructurallyEquivalent(Context, 784 Obj1->getBaseType(), 785 Obj2->getBaseType())) 786 return false; 787 if (Obj1->getNumProtocols() != Obj2->getNumProtocols()) 788 return false; 789 for (unsigned I = 0, N = Obj1->getNumProtocols(); I != N; ++I) { 790 if (!IsStructurallyEquivalent(Context, 791 Obj1->getProtocol(I), 792 Obj2->getProtocol(I))) 793 return false; 794 } 795 break; 796 } 797 798 case Type::ObjCObjectPointer: { 799 const ObjCObjectPointerType *Ptr1 = cast<ObjCObjectPointerType>(T1); 800 const ObjCObjectPointerType *Ptr2 = cast<ObjCObjectPointerType>(T2); 801 if (!IsStructurallyEquivalent(Context, 802 Ptr1->getPointeeType(), 803 Ptr2->getPointeeType())) 804 return false; 805 break; 806 } 807 808 case Type::Atomic: { 809 if (!IsStructurallyEquivalent(Context, 810 cast<AtomicType>(T1)->getValueType(), 811 cast<AtomicType>(T2)->getValueType())) 812 return false; 813 break; 814 } 815 816 } // end switch 817 818 return true; 819 } 820 821 /// \brief Determine structural equivalence of two fields. 822 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 823 FieldDecl *Field1, FieldDecl *Field2) { 824 RecordDecl *Owner2 = cast<RecordDecl>(Field2->getDeclContext()); 825 826 if (!IsStructurallyEquivalent(Context, 827 Field1->getType(), Field2->getType())) { 828 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent) 829 << Context.C2.getTypeDeclType(Owner2); 830 Context.Diag2(Field2->getLocation(), diag::note_odr_field) 831 << Field2->getDeclName() << Field2->getType(); 832 Context.Diag1(Field1->getLocation(), diag::note_odr_field) 833 << Field1->getDeclName() << Field1->getType(); 834 return false; 835 } 836 837 if (Field1->isBitField() != Field2->isBitField()) { 838 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent) 839 << Context.C2.getTypeDeclType(Owner2); 840 if (Field1->isBitField()) { 841 Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field) 842 << Field1->getDeclName() << Field1->getType() 843 << Field1->getBitWidthValue(Context.C1); 844 Context.Diag2(Field2->getLocation(), diag::note_odr_not_bit_field) 845 << Field2->getDeclName(); 846 } else { 847 Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field) 848 << Field2->getDeclName() << Field2->getType() 849 << Field2->getBitWidthValue(Context.C2); 850 Context.Diag1(Field1->getLocation(), diag::note_odr_not_bit_field) 851 << Field1->getDeclName(); 852 } 853 return false; 854 } 855 856 if (Field1->isBitField()) { 857 // Make sure that the bit-fields are the same length. 858 unsigned Bits1 = Field1->getBitWidthValue(Context.C1); 859 unsigned Bits2 = Field2->getBitWidthValue(Context.C2); 860 861 if (Bits1 != Bits2) { 862 Context.Diag2(Owner2->getLocation(), diag::warn_odr_tag_type_inconsistent) 863 << Context.C2.getTypeDeclType(Owner2); 864 Context.Diag2(Field2->getLocation(), diag::note_odr_bit_field) 865 << Field2->getDeclName() << Field2->getType() << Bits2; 866 Context.Diag1(Field1->getLocation(), diag::note_odr_bit_field) 867 << Field1->getDeclName() << Field1->getType() << Bits1; 868 return false; 869 } 870 } 871 872 return true; 873 } 874 875 /// \brief Determine structural equivalence of two records. 876 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 877 RecordDecl *D1, RecordDecl *D2) { 878 if (D1->isUnion() != D2->isUnion()) { 879 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 880 << Context.C2.getTypeDeclType(D2); 881 Context.Diag1(D1->getLocation(), diag::note_odr_tag_kind_here) 882 << D1->getDeclName() << (unsigned)D1->getTagKind(); 883 return false; 884 } 885 886 // If both declarations are class template specializations, we know 887 // the ODR applies, so check the template and template arguments. 888 ClassTemplateSpecializationDecl *Spec1 889 = dyn_cast<ClassTemplateSpecializationDecl>(D1); 890 ClassTemplateSpecializationDecl *Spec2 891 = dyn_cast<ClassTemplateSpecializationDecl>(D2); 892 if (Spec1 && Spec2) { 893 // Check that the specialized templates are the same. 894 if (!IsStructurallyEquivalent(Context, Spec1->getSpecializedTemplate(), 895 Spec2->getSpecializedTemplate())) 896 return false; 897 898 // Check that the template arguments are the same. 899 if (Spec1->getTemplateArgs().size() != Spec2->getTemplateArgs().size()) 900 return false; 901 902 for (unsigned I = 0, N = Spec1->getTemplateArgs().size(); I != N; ++I) 903 if (!IsStructurallyEquivalent(Context, 904 Spec1->getTemplateArgs().get(I), 905 Spec2->getTemplateArgs().get(I))) 906 return false; 907 } 908 // If one is a class template specialization and the other is not, these 909 // structures are different. 910 else if (Spec1 || Spec2) 911 return false; 912 913 // Compare the definitions of these two records. If either or both are 914 // incomplete, we assume that they are equivalent. 915 D1 = D1->getDefinition(); 916 D2 = D2->getDefinition(); 917 if (!D1 || !D2) 918 return true; 919 920 if (CXXRecordDecl *D1CXX = dyn_cast<CXXRecordDecl>(D1)) { 921 if (CXXRecordDecl *D2CXX = dyn_cast<CXXRecordDecl>(D2)) { 922 if (D1CXX->getNumBases() != D2CXX->getNumBases()) { 923 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 924 << Context.C2.getTypeDeclType(D2); 925 Context.Diag2(D2->getLocation(), diag::note_odr_number_of_bases) 926 << D2CXX->getNumBases(); 927 Context.Diag1(D1->getLocation(), diag::note_odr_number_of_bases) 928 << D1CXX->getNumBases(); 929 return false; 930 } 931 932 // Check the base classes. 933 for (CXXRecordDecl::base_class_iterator Base1 = D1CXX->bases_begin(), 934 BaseEnd1 = D1CXX->bases_end(), 935 Base2 = D2CXX->bases_begin(); 936 Base1 != BaseEnd1; 937 ++Base1, ++Base2) { 938 if (!IsStructurallyEquivalent(Context, 939 Base1->getType(), Base2->getType())) { 940 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 941 << Context.C2.getTypeDeclType(D2); 942 Context.Diag2(Base2->getLocStart(), diag::note_odr_base) 943 << Base2->getType() 944 << Base2->getSourceRange(); 945 Context.Diag1(Base1->getLocStart(), diag::note_odr_base) 946 << Base1->getType() 947 << Base1->getSourceRange(); 948 return false; 949 } 950 951 // Check virtual vs. non-virtual inheritance mismatch. 952 if (Base1->isVirtual() != Base2->isVirtual()) { 953 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 954 << Context.C2.getTypeDeclType(D2); 955 Context.Diag2(Base2->getLocStart(), 956 diag::note_odr_virtual_base) 957 << Base2->isVirtual() << Base2->getSourceRange(); 958 Context.Diag1(Base1->getLocStart(), diag::note_odr_base) 959 << Base1->isVirtual() 960 << Base1->getSourceRange(); 961 return false; 962 } 963 } 964 } else if (D1CXX->getNumBases() > 0) { 965 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 966 << Context.C2.getTypeDeclType(D2); 967 const CXXBaseSpecifier *Base1 = D1CXX->bases_begin(); 968 Context.Diag1(Base1->getLocStart(), diag::note_odr_base) 969 << Base1->getType() 970 << Base1->getSourceRange(); 971 Context.Diag2(D2->getLocation(), diag::note_odr_missing_base); 972 return false; 973 } 974 } 975 976 // Check the fields for consistency. 977 RecordDecl::field_iterator Field2 = D2->field_begin(), 978 Field2End = D2->field_end(); 979 for (RecordDecl::field_iterator Field1 = D1->field_begin(), 980 Field1End = D1->field_end(); 981 Field1 != Field1End; 982 ++Field1, ++Field2) { 983 if (Field2 == Field2End) { 984 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 985 << Context.C2.getTypeDeclType(D2); 986 Context.Diag1(Field1->getLocation(), diag::note_odr_field) 987 << Field1->getDeclName() << Field1->getType(); 988 Context.Diag2(D2->getLocation(), diag::note_odr_missing_field); 989 return false; 990 } 991 992 if (!IsStructurallyEquivalent(Context, *Field1, *Field2)) 993 return false; 994 } 995 996 if (Field2 != Field2End) { 997 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 998 << Context.C2.getTypeDeclType(D2); 999 Context.Diag2(Field2->getLocation(), diag::note_odr_field) 1000 << Field2->getDeclName() << Field2->getType(); 1001 Context.Diag1(D1->getLocation(), diag::note_odr_missing_field); 1002 return false; 1003 } 1004 1005 return true; 1006 } 1007 1008 /// \brief Determine structural equivalence of two enums. 1009 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1010 EnumDecl *D1, EnumDecl *D2) { 1011 EnumDecl::enumerator_iterator EC2 = D2->enumerator_begin(), 1012 EC2End = D2->enumerator_end(); 1013 for (EnumDecl::enumerator_iterator EC1 = D1->enumerator_begin(), 1014 EC1End = D1->enumerator_end(); 1015 EC1 != EC1End; ++EC1, ++EC2) { 1016 if (EC2 == EC2End) { 1017 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 1018 << Context.C2.getTypeDeclType(D2); 1019 Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator) 1020 << EC1->getDeclName() 1021 << EC1->getInitVal().toString(10); 1022 Context.Diag2(D2->getLocation(), diag::note_odr_missing_enumerator); 1023 return false; 1024 } 1025 1026 llvm::APSInt Val1 = EC1->getInitVal(); 1027 llvm::APSInt Val2 = EC2->getInitVal(); 1028 if (!llvm::APSInt::isSameValue(Val1, Val2) || 1029 !IsStructurallyEquivalent(EC1->getIdentifier(), EC2->getIdentifier())) { 1030 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 1031 << Context.C2.getTypeDeclType(D2); 1032 Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator) 1033 << EC2->getDeclName() 1034 << EC2->getInitVal().toString(10); 1035 Context.Diag1(EC1->getLocation(), diag::note_odr_enumerator) 1036 << EC1->getDeclName() 1037 << EC1->getInitVal().toString(10); 1038 return false; 1039 } 1040 } 1041 1042 if (EC2 != EC2End) { 1043 Context.Diag2(D2->getLocation(), diag::warn_odr_tag_type_inconsistent) 1044 << Context.C2.getTypeDeclType(D2); 1045 Context.Diag2(EC2->getLocation(), diag::note_odr_enumerator) 1046 << EC2->getDeclName() 1047 << EC2->getInitVal().toString(10); 1048 Context.Diag1(D1->getLocation(), diag::note_odr_missing_enumerator); 1049 return false; 1050 } 1051 1052 return true; 1053 } 1054 1055 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1056 TemplateParameterList *Params1, 1057 TemplateParameterList *Params2) { 1058 if (Params1->size() != Params2->size()) { 1059 Context.Diag2(Params2->getTemplateLoc(), 1060 diag::err_odr_different_num_template_parameters) 1061 << Params1->size() << Params2->size(); 1062 Context.Diag1(Params1->getTemplateLoc(), 1063 diag::note_odr_template_parameter_list); 1064 return false; 1065 } 1066 1067 for (unsigned I = 0, N = Params1->size(); I != N; ++I) { 1068 if (Params1->getParam(I)->getKind() != Params2->getParam(I)->getKind()) { 1069 Context.Diag2(Params2->getParam(I)->getLocation(), 1070 diag::err_odr_different_template_parameter_kind); 1071 Context.Diag1(Params1->getParam(I)->getLocation(), 1072 diag::note_odr_template_parameter_here); 1073 return false; 1074 } 1075 1076 if (!Context.IsStructurallyEquivalent(Params1->getParam(I), 1077 Params2->getParam(I))) { 1078 1079 return false; 1080 } 1081 } 1082 1083 return true; 1084 } 1085 1086 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1087 TemplateTypeParmDecl *D1, 1088 TemplateTypeParmDecl *D2) { 1089 if (D1->isParameterPack() != D2->isParameterPack()) { 1090 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack) 1091 << D2->isParameterPack(); 1092 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack) 1093 << D1->isParameterPack(); 1094 return false; 1095 } 1096 1097 return true; 1098 } 1099 1100 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1101 NonTypeTemplateParmDecl *D1, 1102 NonTypeTemplateParmDecl *D2) { 1103 // FIXME: Enable once we have variadic templates. 1104 #if 0 1105 if (D1->isParameterPack() != D2->isParameterPack()) { 1106 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack) 1107 << D2->isParameterPack(); 1108 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack) 1109 << D1->isParameterPack(); 1110 return false; 1111 } 1112 #endif 1113 1114 // Check types. 1115 if (!Context.IsStructurallyEquivalent(D1->getType(), D2->getType())) { 1116 Context.Diag2(D2->getLocation(), 1117 diag::err_odr_non_type_parameter_type_inconsistent) 1118 << D2->getType() << D1->getType(); 1119 Context.Diag1(D1->getLocation(), diag::note_odr_value_here) 1120 << D1->getType(); 1121 return false; 1122 } 1123 1124 return true; 1125 } 1126 1127 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1128 TemplateTemplateParmDecl *D1, 1129 TemplateTemplateParmDecl *D2) { 1130 // FIXME: Enable once we have variadic templates. 1131 #if 0 1132 if (D1->isParameterPack() != D2->isParameterPack()) { 1133 Context.Diag2(D2->getLocation(), diag::err_odr_parameter_pack_non_pack) 1134 << D2->isParameterPack(); 1135 Context.Diag1(D1->getLocation(), diag::note_odr_parameter_pack_non_pack) 1136 << D1->isParameterPack(); 1137 return false; 1138 } 1139 #endif 1140 1141 // Check template parameter lists. 1142 return IsStructurallyEquivalent(Context, D1->getTemplateParameters(), 1143 D2->getTemplateParameters()); 1144 } 1145 1146 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1147 ClassTemplateDecl *D1, 1148 ClassTemplateDecl *D2) { 1149 // Check template parameters. 1150 if (!IsStructurallyEquivalent(Context, 1151 D1->getTemplateParameters(), 1152 D2->getTemplateParameters())) 1153 return false; 1154 1155 // Check the templated declaration. 1156 return Context.IsStructurallyEquivalent(D1->getTemplatedDecl(), 1157 D2->getTemplatedDecl()); 1158 } 1159 1160 /// \brief Determine structural equivalence of two declarations. 1161 static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context, 1162 Decl *D1, Decl *D2) { 1163 // FIXME: Check for known structural equivalences via a callback of some sort. 1164 1165 // Check whether we already know that these two declarations are not 1166 // structurally equivalent. 1167 if (Context.NonEquivalentDecls.count(std::make_pair(D1->getCanonicalDecl(), 1168 D2->getCanonicalDecl()))) 1169 return false; 1170 1171 // Determine whether we've already produced a tentative equivalence for D1. 1172 Decl *&EquivToD1 = Context.TentativeEquivalences[D1->getCanonicalDecl()]; 1173 if (EquivToD1) 1174 return EquivToD1 == D2->getCanonicalDecl(); 1175 1176 // Produce a tentative equivalence D1 <-> D2, which will be checked later. 1177 EquivToD1 = D2->getCanonicalDecl(); 1178 Context.DeclsToCheck.push_back(D1->getCanonicalDecl()); 1179 return true; 1180 } 1181 1182 bool StructuralEquivalenceContext::IsStructurallyEquivalent(Decl *D1, 1183 Decl *D2) { 1184 if (!::IsStructurallyEquivalent(*this, D1, D2)) 1185 return false; 1186 1187 return !Finish(); 1188 } 1189 1190 bool StructuralEquivalenceContext::IsStructurallyEquivalent(QualType T1, 1191 QualType T2) { 1192 if (!::IsStructurallyEquivalent(*this, T1, T2)) 1193 return false; 1194 1195 return !Finish(); 1196 } 1197 1198 bool StructuralEquivalenceContext::Finish() { 1199 while (!DeclsToCheck.empty()) { 1200 // Check the next declaration. 1201 Decl *D1 = DeclsToCheck.front(); 1202 DeclsToCheck.pop_front(); 1203 1204 Decl *D2 = TentativeEquivalences[D1]; 1205 assert(D2 && "Unrecorded tentative equivalence?"); 1206 1207 bool Equivalent = true; 1208 1209 // FIXME: Switch on all declaration kinds. For now, we're just going to 1210 // check the obvious ones. 1211 if (RecordDecl *Record1 = dyn_cast<RecordDecl>(D1)) { 1212 if (RecordDecl *Record2 = dyn_cast<RecordDecl>(D2)) { 1213 // Check for equivalent structure names. 1214 IdentifierInfo *Name1 = Record1->getIdentifier(); 1215 if (!Name1 && Record1->getTypedefNameForAnonDecl()) 1216 Name1 = Record1->getTypedefNameForAnonDecl()->getIdentifier(); 1217 IdentifierInfo *Name2 = Record2->getIdentifier(); 1218 if (!Name2 && Record2->getTypedefNameForAnonDecl()) 1219 Name2 = Record2->getTypedefNameForAnonDecl()->getIdentifier(); 1220 if (!::IsStructurallyEquivalent(Name1, Name2) || 1221 !::IsStructurallyEquivalent(*this, Record1, Record2)) 1222 Equivalent = false; 1223 } else { 1224 // Record/non-record mismatch. 1225 Equivalent = false; 1226 } 1227 } else if (EnumDecl *Enum1 = dyn_cast<EnumDecl>(D1)) { 1228 if (EnumDecl *Enum2 = dyn_cast<EnumDecl>(D2)) { 1229 // Check for equivalent enum names. 1230 IdentifierInfo *Name1 = Enum1->getIdentifier(); 1231 if (!Name1 && Enum1->getTypedefNameForAnonDecl()) 1232 Name1 = Enum1->getTypedefNameForAnonDecl()->getIdentifier(); 1233 IdentifierInfo *Name2 = Enum2->getIdentifier(); 1234 if (!Name2 && Enum2->getTypedefNameForAnonDecl()) 1235 Name2 = Enum2->getTypedefNameForAnonDecl()->getIdentifier(); 1236 if (!::IsStructurallyEquivalent(Name1, Name2) || 1237 !::IsStructurallyEquivalent(*this, Enum1, Enum2)) 1238 Equivalent = false; 1239 } else { 1240 // Enum/non-enum mismatch 1241 Equivalent = false; 1242 } 1243 } else if (TypedefNameDecl *Typedef1 = dyn_cast<TypedefNameDecl>(D1)) { 1244 if (TypedefNameDecl *Typedef2 = dyn_cast<TypedefNameDecl>(D2)) { 1245 if (!::IsStructurallyEquivalent(Typedef1->getIdentifier(), 1246 Typedef2->getIdentifier()) || 1247 !::IsStructurallyEquivalent(*this, 1248 Typedef1->getUnderlyingType(), 1249 Typedef2->getUnderlyingType())) 1250 Equivalent = false; 1251 } else { 1252 // Typedef/non-typedef mismatch. 1253 Equivalent = false; 1254 } 1255 } else if (ClassTemplateDecl *ClassTemplate1 1256 = dyn_cast<ClassTemplateDecl>(D1)) { 1257 if (ClassTemplateDecl *ClassTemplate2 = dyn_cast<ClassTemplateDecl>(D2)) { 1258 if (!::IsStructurallyEquivalent(ClassTemplate1->getIdentifier(), 1259 ClassTemplate2->getIdentifier()) || 1260 !::IsStructurallyEquivalent(*this, ClassTemplate1, ClassTemplate2)) 1261 Equivalent = false; 1262 } else { 1263 // Class template/non-class-template mismatch. 1264 Equivalent = false; 1265 } 1266 } else if (TemplateTypeParmDecl *TTP1= dyn_cast<TemplateTypeParmDecl>(D1)) { 1267 if (TemplateTypeParmDecl *TTP2 = dyn_cast<TemplateTypeParmDecl>(D2)) { 1268 if (!::IsStructurallyEquivalent(*this, TTP1, TTP2)) 1269 Equivalent = false; 1270 } else { 1271 // Kind mismatch. 1272 Equivalent = false; 1273 } 1274 } else if (NonTypeTemplateParmDecl *NTTP1 1275 = dyn_cast<NonTypeTemplateParmDecl>(D1)) { 1276 if (NonTypeTemplateParmDecl *NTTP2 1277 = dyn_cast<NonTypeTemplateParmDecl>(D2)) { 1278 if (!::IsStructurallyEquivalent(*this, NTTP1, NTTP2)) 1279 Equivalent = false; 1280 } else { 1281 // Kind mismatch. 1282 Equivalent = false; 1283 } 1284 } else if (TemplateTemplateParmDecl *TTP1 1285 = dyn_cast<TemplateTemplateParmDecl>(D1)) { 1286 if (TemplateTemplateParmDecl *TTP2 1287 = dyn_cast<TemplateTemplateParmDecl>(D2)) { 1288 if (!::IsStructurallyEquivalent(*this, TTP1, TTP2)) 1289 Equivalent = false; 1290 } else { 1291 // Kind mismatch. 1292 Equivalent = false; 1293 } 1294 } 1295 1296 if (!Equivalent) { 1297 // Note that these two declarations are not equivalent (and we already 1298 // know about it). 1299 NonEquivalentDecls.insert(std::make_pair(D1->getCanonicalDecl(), 1300 D2->getCanonicalDecl())); 1301 return true; 1302 } 1303 // FIXME: Check other declaration kinds! 1304 } 1305 1306 return false; 1307 } 1308 1309 //---------------------------------------------------------------------------- 1310 // Import Types 1311 //---------------------------------------------------------------------------- 1312 1313 QualType ASTNodeImporter::VisitType(const Type *T) { 1314 Importer.FromDiag(SourceLocation(), diag::err_unsupported_ast_node) 1315 << T->getTypeClassName(); 1316 return QualType(); 1317 } 1318 1319 QualType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) { 1320 switch (T->getKind()) { 1321 #define SHARED_SINGLETON_TYPE(Expansion) 1322 #define BUILTIN_TYPE(Id, SingletonId) \ 1323 case BuiltinType::Id: return Importer.getToContext().SingletonId; 1324 #include "clang/AST/BuiltinTypes.def" 1325 1326 // FIXME: for Char16, Char32, and NullPtr, make sure that the "to" 1327 // context supports C++. 1328 1329 // FIXME: for ObjCId, ObjCClass, and ObjCSel, make sure that the "to" 1330 // context supports ObjC. 1331 1332 case BuiltinType::Char_U: 1333 // The context we're importing from has an unsigned 'char'. If we're 1334 // importing into a context with a signed 'char', translate to 1335 // 'unsigned char' instead. 1336 if (Importer.getToContext().getLangOpts().CharIsSigned) 1337 return Importer.getToContext().UnsignedCharTy; 1338 1339 return Importer.getToContext().CharTy; 1340 1341 case BuiltinType::Char_S: 1342 // The context we're importing from has an unsigned 'char'. If we're 1343 // importing into a context with a signed 'char', translate to 1344 // 'unsigned char' instead. 1345 if (!Importer.getToContext().getLangOpts().CharIsSigned) 1346 return Importer.getToContext().SignedCharTy; 1347 1348 return Importer.getToContext().CharTy; 1349 1350 case BuiltinType::WChar_S: 1351 case BuiltinType::WChar_U: 1352 // FIXME: If not in C++, shall we translate to the C equivalent of 1353 // wchar_t? 1354 return Importer.getToContext().WCharTy; 1355 } 1356 1357 llvm_unreachable("Invalid BuiltinType Kind!"); 1358 } 1359 1360 QualType ASTNodeImporter::VisitComplexType(const ComplexType *T) { 1361 QualType ToElementType = Importer.Import(T->getElementType()); 1362 if (ToElementType.isNull()) 1363 return QualType(); 1364 1365 return Importer.getToContext().getComplexType(ToElementType); 1366 } 1367 1368 QualType ASTNodeImporter::VisitPointerType(const PointerType *T) { 1369 QualType ToPointeeType = Importer.Import(T->getPointeeType()); 1370 if (ToPointeeType.isNull()) 1371 return QualType(); 1372 1373 return Importer.getToContext().getPointerType(ToPointeeType); 1374 } 1375 1376 QualType ASTNodeImporter::VisitBlockPointerType(const BlockPointerType *T) { 1377 // FIXME: Check for blocks support in "to" context. 1378 QualType ToPointeeType = Importer.Import(T->getPointeeType()); 1379 if (ToPointeeType.isNull()) 1380 return QualType(); 1381 1382 return Importer.getToContext().getBlockPointerType(ToPointeeType); 1383 } 1384 1385 QualType 1386 ASTNodeImporter::VisitLValueReferenceType(const LValueReferenceType *T) { 1387 // FIXME: Check for C++ support in "to" context. 1388 QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten()); 1389 if (ToPointeeType.isNull()) 1390 return QualType(); 1391 1392 return Importer.getToContext().getLValueReferenceType(ToPointeeType); 1393 } 1394 1395 QualType 1396 ASTNodeImporter::VisitRValueReferenceType(const RValueReferenceType *T) { 1397 // FIXME: Check for C++0x support in "to" context. 1398 QualType ToPointeeType = Importer.Import(T->getPointeeTypeAsWritten()); 1399 if (ToPointeeType.isNull()) 1400 return QualType(); 1401 1402 return Importer.getToContext().getRValueReferenceType(ToPointeeType); 1403 } 1404 1405 QualType ASTNodeImporter::VisitMemberPointerType(const MemberPointerType *T) { 1406 // FIXME: Check for C++ support in "to" context. 1407 QualType ToPointeeType = Importer.Import(T->getPointeeType()); 1408 if (ToPointeeType.isNull()) 1409 return QualType(); 1410 1411 QualType ClassType = Importer.Import(QualType(T->getClass(), 0)); 1412 return Importer.getToContext().getMemberPointerType(ToPointeeType, 1413 ClassType.getTypePtr()); 1414 } 1415 1416 QualType ASTNodeImporter::VisitConstantArrayType(const ConstantArrayType *T) { 1417 QualType ToElementType = Importer.Import(T->getElementType()); 1418 if (ToElementType.isNull()) 1419 return QualType(); 1420 1421 return Importer.getToContext().getConstantArrayType(ToElementType, 1422 T->getSize(), 1423 T->getSizeModifier(), 1424 T->getIndexTypeCVRQualifiers()); 1425 } 1426 1427 QualType 1428 ASTNodeImporter::VisitIncompleteArrayType(const IncompleteArrayType *T) { 1429 QualType ToElementType = Importer.Import(T->getElementType()); 1430 if (ToElementType.isNull()) 1431 return QualType(); 1432 1433 return Importer.getToContext().getIncompleteArrayType(ToElementType, 1434 T->getSizeModifier(), 1435 T->getIndexTypeCVRQualifiers()); 1436 } 1437 1438 QualType ASTNodeImporter::VisitVariableArrayType(const VariableArrayType *T) { 1439 QualType ToElementType = Importer.Import(T->getElementType()); 1440 if (ToElementType.isNull()) 1441 return QualType(); 1442 1443 Expr *Size = Importer.Import(T->getSizeExpr()); 1444 if (!Size) 1445 return QualType(); 1446 1447 SourceRange Brackets = Importer.Import(T->getBracketsRange()); 1448 return Importer.getToContext().getVariableArrayType(ToElementType, Size, 1449 T->getSizeModifier(), 1450 T->getIndexTypeCVRQualifiers(), 1451 Brackets); 1452 } 1453 1454 QualType ASTNodeImporter::VisitVectorType(const VectorType *T) { 1455 QualType ToElementType = Importer.Import(T->getElementType()); 1456 if (ToElementType.isNull()) 1457 return QualType(); 1458 1459 return Importer.getToContext().getVectorType(ToElementType, 1460 T->getNumElements(), 1461 T->getVectorKind()); 1462 } 1463 1464 QualType ASTNodeImporter::VisitExtVectorType(const ExtVectorType *T) { 1465 QualType ToElementType = Importer.Import(T->getElementType()); 1466 if (ToElementType.isNull()) 1467 return QualType(); 1468 1469 return Importer.getToContext().getExtVectorType(ToElementType, 1470 T->getNumElements()); 1471 } 1472 1473 QualType 1474 ASTNodeImporter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) { 1475 // FIXME: What happens if we're importing a function without a prototype 1476 // into C++? Should we make it variadic? 1477 QualType ToResultType = Importer.Import(T->getResultType()); 1478 if (ToResultType.isNull()) 1479 return QualType(); 1480 1481 return Importer.getToContext().getFunctionNoProtoType(ToResultType, 1482 T->getExtInfo()); 1483 } 1484 1485 QualType ASTNodeImporter::VisitFunctionProtoType(const FunctionProtoType *T) { 1486 QualType ToResultType = Importer.Import(T->getResultType()); 1487 if (ToResultType.isNull()) 1488 return QualType(); 1489 1490 // Import argument types 1491 SmallVector<QualType, 4> ArgTypes; 1492 for (FunctionProtoType::arg_type_iterator A = T->arg_type_begin(), 1493 AEnd = T->arg_type_end(); 1494 A != AEnd; ++A) { 1495 QualType ArgType = Importer.Import(*A); 1496 if (ArgType.isNull()) 1497 return QualType(); 1498 ArgTypes.push_back(ArgType); 1499 } 1500 1501 // Import exception types 1502 SmallVector<QualType, 4> ExceptionTypes; 1503 for (FunctionProtoType::exception_iterator E = T->exception_begin(), 1504 EEnd = T->exception_end(); 1505 E != EEnd; ++E) { 1506 QualType ExceptionType = Importer.Import(*E); 1507 if (ExceptionType.isNull()) 1508 return QualType(); 1509 ExceptionTypes.push_back(ExceptionType); 1510 } 1511 1512 FunctionProtoType::ExtProtoInfo EPI = T->getExtProtoInfo(); 1513 EPI.Exceptions = ExceptionTypes.data(); 1514 1515 return Importer.getToContext().getFunctionType(ToResultType, ArgTypes.data(), 1516 ArgTypes.size(), EPI); 1517 } 1518 1519 QualType ASTNodeImporter::VisitParenType(const ParenType *T) { 1520 QualType ToInnerType = Importer.Import(T->getInnerType()); 1521 if (ToInnerType.isNull()) 1522 return QualType(); 1523 1524 return Importer.getToContext().getParenType(ToInnerType); 1525 } 1526 1527 QualType ASTNodeImporter::VisitTypedefType(const TypedefType *T) { 1528 TypedefNameDecl *ToDecl 1529 = dyn_cast_or_null<TypedefNameDecl>(Importer.Import(T->getDecl())); 1530 if (!ToDecl) 1531 return QualType(); 1532 1533 return Importer.getToContext().getTypeDeclType(ToDecl); 1534 } 1535 1536 QualType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) { 1537 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr()); 1538 if (!ToExpr) 1539 return QualType(); 1540 1541 return Importer.getToContext().getTypeOfExprType(ToExpr); 1542 } 1543 1544 QualType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) { 1545 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType()); 1546 if (ToUnderlyingType.isNull()) 1547 return QualType(); 1548 1549 return Importer.getToContext().getTypeOfType(ToUnderlyingType); 1550 } 1551 1552 QualType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) { 1553 // FIXME: Make sure that the "to" context supports C++0x! 1554 Expr *ToExpr = Importer.Import(T->getUnderlyingExpr()); 1555 if (!ToExpr) 1556 return QualType(); 1557 1558 QualType UnderlyingType = Importer.Import(T->getUnderlyingType()); 1559 if (UnderlyingType.isNull()) 1560 return QualType(); 1561 1562 return Importer.getToContext().getDecltypeType(ToExpr, UnderlyingType); 1563 } 1564 1565 QualType ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) { 1566 QualType ToBaseType = Importer.Import(T->getBaseType()); 1567 QualType ToUnderlyingType = Importer.Import(T->getUnderlyingType()); 1568 if (ToBaseType.isNull() || ToUnderlyingType.isNull()) 1569 return QualType(); 1570 1571 return Importer.getToContext().getUnaryTransformType(ToBaseType, 1572 ToUnderlyingType, 1573 T->getUTTKind()); 1574 } 1575 1576 QualType ASTNodeImporter::VisitAutoType(const AutoType *T) { 1577 // FIXME: Make sure that the "to" context supports C++0x! 1578 QualType FromDeduced = T->getDeducedType(); 1579 QualType ToDeduced; 1580 if (!FromDeduced.isNull()) { 1581 ToDeduced = Importer.Import(FromDeduced); 1582 if (ToDeduced.isNull()) 1583 return QualType(); 1584 } 1585 1586 return Importer.getToContext().getAutoType(ToDeduced); 1587 } 1588 1589 QualType ASTNodeImporter::VisitRecordType(const RecordType *T) { 1590 RecordDecl *ToDecl 1591 = dyn_cast_or_null<RecordDecl>(Importer.Import(T->getDecl())); 1592 if (!ToDecl) 1593 return QualType(); 1594 1595 return Importer.getToContext().getTagDeclType(ToDecl); 1596 } 1597 1598 QualType ASTNodeImporter::VisitEnumType(const EnumType *T) { 1599 EnumDecl *ToDecl 1600 = dyn_cast_or_null<EnumDecl>(Importer.Import(T->getDecl())); 1601 if (!ToDecl) 1602 return QualType(); 1603 1604 return Importer.getToContext().getTagDeclType(ToDecl); 1605 } 1606 1607 QualType ASTNodeImporter::VisitTemplateSpecializationType( 1608 const TemplateSpecializationType *T) { 1609 TemplateName ToTemplate = Importer.Import(T->getTemplateName()); 1610 if (ToTemplate.isNull()) 1611 return QualType(); 1612 1613 SmallVector<TemplateArgument, 2> ToTemplateArgs; 1614 if (ImportTemplateArguments(T->getArgs(), T->getNumArgs(), ToTemplateArgs)) 1615 return QualType(); 1616 1617 QualType ToCanonType; 1618 if (!QualType(T, 0).isCanonical()) { 1619 QualType FromCanonType 1620 = Importer.getFromContext().getCanonicalType(QualType(T, 0)); 1621 ToCanonType =Importer.Import(FromCanonType); 1622 if (ToCanonType.isNull()) 1623 return QualType(); 1624 } 1625 return Importer.getToContext().getTemplateSpecializationType(ToTemplate, 1626 ToTemplateArgs.data(), 1627 ToTemplateArgs.size(), 1628 ToCanonType); 1629 } 1630 1631 QualType ASTNodeImporter::VisitElaboratedType(const ElaboratedType *T) { 1632 NestedNameSpecifier *ToQualifier = 0; 1633 // Note: the qualifier in an ElaboratedType is optional. 1634 if (T->getQualifier()) { 1635 ToQualifier = Importer.Import(T->getQualifier()); 1636 if (!ToQualifier) 1637 return QualType(); 1638 } 1639 1640 QualType ToNamedType = Importer.Import(T->getNamedType()); 1641 if (ToNamedType.isNull()) 1642 return QualType(); 1643 1644 return Importer.getToContext().getElaboratedType(T->getKeyword(), 1645 ToQualifier, ToNamedType); 1646 } 1647 1648 QualType ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) { 1649 ObjCInterfaceDecl *Class 1650 = dyn_cast_or_null<ObjCInterfaceDecl>(Importer.Import(T->getDecl())); 1651 if (!Class) 1652 return QualType(); 1653 1654 return Importer.getToContext().getObjCInterfaceType(Class); 1655 } 1656 1657 QualType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) { 1658 QualType ToBaseType = Importer.Import(T->getBaseType()); 1659 if (ToBaseType.isNull()) 1660 return QualType(); 1661 1662 SmallVector<ObjCProtocolDecl *, 4> Protocols; 1663 for (ObjCObjectType::qual_iterator P = T->qual_begin(), 1664 PEnd = T->qual_end(); 1665 P != PEnd; ++P) { 1666 ObjCProtocolDecl *Protocol 1667 = dyn_cast_or_null<ObjCProtocolDecl>(Importer.Import(*P)); 1668 if (!Protocol) 1669 return QualType(); 1670 Protocols.push_back(Protocol); 1671 } 1672 1673 return Importer.getToContext().getObjCObjectType(ToBaseType, 1674 Protocols.data(), 1675 Protocols.size()); 1676 } 1677 1678 QualType 1679 ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) { 1680 QualType ToPointeeType = Importer.Import(T->getPointeeType()); 1681 if (ToPointeeType.isNull()) 1682 return QualType(); 1683 1684 return Importer.getToContext().getObjCObjectPointerType(ToPointeeType); 1685 } 1686 1687 //---------------------------------------------------------------------------- 1688 // Import Declarations 1689 //---------------------------------------------------------------------------- 1690 bool ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclContext *&DC, 1691 DeclContext *&LexicalDC, 1692 DeclarationName &Name, 1693 SourceLocation &Loc) { 1694 // Import the context of this declaration. 1695 DC = Importer.ImportContext(D->getDeclContext()); 1696 if (!DC) 1697 return true; 1698 1699 LexicalDC = DC; 1700 if (D->getDeclContext() != D->getLexicalDeclContext()) { 1701 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); 1702 if (!LexicalDC) 1703 return true; 1704 } 1705 1706 // Import the name of this declaration. 1707 Name = Importer.Import(D->getDeclName()); 1708 if (D->getDeclName() && !Name) 1709 return true; 1710 1711 // Import the location of this declaration. 1712 Loc = Importer.Import(D->getLocation()); 1713 return false; 1714 } 1715 1716 void ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) { 1717 if (!FromD) 1718 return; 1719 1720 if (!ToD) { 1721 ToD = Importer.Import(FromD); 1722 if (!ToD) 1723 return; 1724 } 1725 1726 if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(FromD)) { 1727 if (RecordDecl *ToRecord = cast_or_null<RecordDecl>(ToD)) { 1728 if (FromRecord->getDefinition() && !ToRecord->getDefinition()) { 1729 ImportDefinition(FromRecord, ToRecord); 1730 } 1731 } 1732 return; 1733 } 1734 1735 if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(FromD)) { 1736 if (EnumDecl *ToEnum = cast_or_null<EnumDecl>(ToD)) { 1737 if (FromEnum->getDefinition() && !ToEnum->getDefinition()) { 1738 ImportDefinition(FromEnum, ToEnum); 1739 } 1740 } 1741 return; 1742 } 1743 } 1744 1745 void 1746 ASTNodeImporter::ImportDeclarationNameLoc(const DeclarationNameInfo &From, 1747 DeclarationNameInfo& To) { 1748 // NOTE: To.Name and To.Loc are already imported. 1749 // We only have to import To.LocInfo. 1750 switch (To.getName().getNameKind()) { 1751 case DeclarationName::Identifier: 1752 case DeclarationName::ObjCZeroArgSelector: 1753 case DeclarationName::ObjCOneArgSelector: 1754 case DeclarationName::ObjCMultiArgSelector: 1755 case DeclarationName::CXXUsingDirective: 1756 return; 1757 1758 case DeclarationName::CXXOperatorName: { 1759 SourceRange Range = From.getCXXOperatorNameRange(); 1760 To.setCXXOperatorNameRange(Importer.Import(Range)); 1761 return; 1762 } 1763 case DeclarationName::CXXLiteralOperatorName: { 1764 SourceLocation Loc = From.getCXXLiteralOperatorNameLoc(); 1765 To.setCXXLiteralOperatorNameLoc(Importer.Import(Loc)); 1766 return; 1767 } 1768 case DeclarationName::CXXConstructorName: 1769 case DeclarationName::CXXDestructorName: 1770 case DeclarationName::CXXConversionFunctionName: { 1771 TypeSourceInfo *FromTInfo = From.getNamedTypeInfo(); 1772 To.setNamedTypeInfo(Importer.Import(FromTInfo)); 1773 return; 1774 } 1775 } 1776 llvm_unreachable("Unknown name kind."); 1777 } 1778 1779 void ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) { 1780 if (Importer.isMinimalImport() && !ForceImport) { 1781 Importer.ImportContext(FromDC); 1782 return; 1783 } 1784 1785 for (DeclContext::decl_iterator From = FromDC->decls_begin(), 1786 FromEnd = FromDC->decls_end(); 1787 From != FromEnd; 1788 ++From) 1789 Importer.Import(*From); 1790 } 1791 1792 bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To, 1793 ImportDefinitionKind Kind) { 1794 if (To->getDefinition() || To->isBeingDefined()) { 1795 if (Kind == IDK_Everything) 1796 ImportDeclContext(From, /*ForceImport=*/true); 1797 1798 return false; 1799 } 1800 1801 To->startDefinition(); 1802 1803 // Add base classes. 1804 if (CXXRecordDecl *ToCXX = dyn_cast<CXXRecordDecl>(To)) { 1805 CXXRecordDecl *FromCXX = cast<CXXRecordDecl>(From); 1806 1807 struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data(); 1808 struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data(); 1809 ToData.UserDeclaredConstructor = FromData.UserDeclaredConstructor; 1810 ToData.UserDeclaredCopyConstructor = FromData.UserDeclaredCopyConstructor; 1811 ToData.UserDeclaredMoveConstructor = FromData.UserDeclaredMoveConstructor; 1812 ToData.UserDeclaredCopyAssignment = FromData.UserDeclaredCopyAssignment; 1813 ToData.UserDeclaredMoveAssignment = FromData.UserDeclaredMoveAssignment; 1814 ToData.UserDeclaredDestructor = FromData.UserDeclaredDestructor; 1815 ToData.Aggregate = FromData.Aggregate; 1816 ToData.PlainOldData = FromData.PlainOldData; 1817 ToData.Empty = FromData.Empty; 1818 ToData.Polymorphic = FromData.Polymorphic; 1819 ToData.Abstract = FromData.Abstract; 1820 ToData.IsStandardLayout = FromData.IsStandardLayout; 1821 ToData.HasNoNonEmptyBases = FromData.HasNoNonEmptyBases; 1822 ToData.HasPrivateFields = FromData.HasPrivateFields; 1823 ToData.HasProtectedFields = FromData.HasProtectedFields; 1824 ToData.HasPublicFields = FromData.HasPublicFields; 1825 ToData.HasMutableFields = FromData.HasMutableFields; 1826 ToData.HasOnlyCMembers = FromData.HasOnlyCMembers; 1827 ToData.HasInClassInitializer = FromData.HasInClassInitializer; 1828 ToData.HasTrivialDefaultConstructor = FromData.HasTrivialDefaultConstructor; 1829 ToData.HasConstexprNonCopyMoveConstructor 1830 = FromData.HasConstexprNonCopyMoveConstructor; 1831 ToData.DefaultedDefaultConstructorIsConstexpr 1832 = FromData.DefaultedDefaultConstructorIsConstexpr; 1833 ToData.HasConstexprDefaultConstructor 1834 = FromData.HasConstexprDefaultConstructor; 1835 ToData.HasTrivialCopyConstructor = FromData.HasTrivialCopyConstructor; 1836 ToData.HasTrivialMoveConstructor = FromData.HasTrivialMoveConstructor; 1837 ToData.HasTrivialCopyAssignment = FromData.HasTrivialCopyAssignment; 1838 ToData.HasTrivialMoveAssignment = FromData.HasTrivialMoveAssignment; 1839 ToData.HasTrivialDestructor = FromData.HasTrivialDestructor; 1840 ToData.HasIrrelevantDestructor = FromData.HasIrrelevantDestructor; 1841 ToData.HasNonLiteralTypeFieldsOrBases 1842 = FromData.HasNonLiteralTypeFieldsOrBases; 1843 // ComputedVisibleConversions not imported. 1844 ToData.UserProvidedDefaultConstructor 1845 = FromData.UserProvidedDefaultConstructor; 1846 ToData.DeclaredDefaultConstructor = FromData.DeclaredDefaultConstructor; 1847 ToData.DeclaredCopyConstructor = FromData.DeclaredCopyConstructor; 1848 ToData.DeclaredMoveConstructor = FromData.DeclaredMoveConstructor; 1849 ToData.DeclaredCopyAssignment = FromData.DeclaredCopyAssignment; 1850 ToData.DeclaredMoveAssignment = FromData.DeclaredMoveAssignment; 1851 ToData.DeclaredDestructor = FromData.DeclaredDestructor; 1852 ToData.FailedImplicitMoveConstructor 1853 = FromData.FailedImplicitMoveConstructor; 1854 ToData.FailedImplicitMoveAssignment = FromData.FailedImplicitMoveAssignment; 1855 ToData.IsLambda = FromData.IsLambda; 1856 1857 SmallVector<CXXBaseSpecifier *, 4> Bases; 1858 for (CXXRecordDecl::base_class_iterator 1859 Base1 = FromCXX->bases_begin(), 1860 FromBaseEnd = FromCXX->bases_end(); 1861 Base1 != FromBaseEnd; 1862 ++Base1) { 1863 QualType T = Importer.Import(Base1->getType()); 1864 if (T.isNull()) 1865 return true; 1866 1867 SourceLocation EllipsisLoc; 1868 if (Base1->isPackExpansion()) 1869 EllipsisLoc = Importer.Import(Base1->getEllipsisLoc()); 1870 1871 // Ensure that we have a definition for the base. 1872 ImportDefinitionIfNeeded(Base1->getType()->getAsCXXRecordDecl()); 1873 1874 Bases.push_back( 1875 new (Importer.getToContext()) 1876 CXXBaseSpecifier(Importer.Import(Base1->getSourceRange()), 1877 Base1->isVirtual(), 1878 Base1->isBaseOfClass(), 1879 Base1->getAccessSpecifierAsWritten(), 1880 Importer.Import(Base1->getTypeSourceInfo()), 1881 EllipsisLoc)); 1882 } 1883 if (!Bases.empty()) 1884 ToCXX->setBases(Bases.data(), Bases.size()); 1885 } 1886 1887 if (shouldForceImportDeclContext(Kind)) 1888 ImportDeclContext(From, /*ForceImport=*/true); 1889 1890 To->completeDefinition(); 1891 return false; 1892 } 1893 1894 bool ASTNodeImporter::ImportDefinition(EnumDecl *From, EnumDecl *To, 1895 ImportDefinitionKind Kind) { 1896 if (To->getDefinition() || To->isBeingDefined()) { 1897 if (Kind == IDK_Everything) 1898 ImportDeclContext(From, /*ForceImport=*/true); 1899 return false; 1900 } 1901 1902 To->startDefinition(); 1903 1904 QualType T = Importer.Import(Importer.getFromContext().getTypeDeclType(From)); 1905 if (T.isNull()) 1906 return true; 1907 1908 QualType ToPromotionType = Importer.Import(From->getPromotionType()); 1909 if (ToPromotionType.isNull()) 1910 return true; 1911 1912 if (shouldForceImportDeclContext(Kind)) 1913 ImportDeclContext(From, /*ForceImport=*/true); 1914 1915 // FIXME: we might need to merge the number of positive or negative bits 1916 // if the enumerator lists don't match. 1917 To->completeDefinition(T, ToPromotionType, 1918 From->getNumPositiveBits(), 1919 From->getNumNegativeBits()); 1920 return false; 1921 } 1922 1923 TemplateParameterList *ASTNodeImporter::ImportTemplateParameterList( 1924 TemplateParameterList *Params) { 1925 SmallVector<NamedDecl *, 4> ToParams; 1926 ToParams.reserve(Params->size()); 1927 for (TemplateParameterList::iterator P = Params->begin(), 1928 PEnd = Params->end(); 1929 P != PEnd; ++P) { 1930 Decl *To = Importer.Import(*P); 1931 if (!To) 1932 return 0; 1933 1934 ToParams.push_back(cast<NamedDecl>(To)); 1935 } 1936 1937 return TemplateParameterList::Create(Importer.getToContext(), 1938 Importer.Import(Params->getTemplateLoc()), 1939 Importer.Import(Params->getLAngleLoc()), 1940 ToParams.data(), ToParams.size(), 1941 Importer.Import(Params->getRAngleLoc())); 1942 } 1943 1944 TemplateArgument 1945 ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) { 1946 switch (From.getKind()) { 1947 case TemplateArgument::Null: 1948 return TemplateArgument(); 1949 1950 case TemplateArgument::Type: { 1951 QualType ToType = Importer.Import(From.getAsType()); 1952 if (ToType.isNull()) 1953 return TemplateArgument(); 1954 return TemplateArgument(ToType); 1955 } 1956 1957 case TemplateArgument::Integral: { 1958 QualType ToType = Importer.Import(From.getIntegralType()); 1959 if (ToType.isNull()) 1960 return TemplateArgument(); 1961 return TemplateArgument(From, ToType); 1962 } 1963 1964 case TemplateArgument::Declaration: 1965 if (Decl *To = Importer.Import(From.getAsDecl())) 1966 return TemplateArgument(To); 1967 return TemplateArgument(); 1968 1969 case TemplateArgument::Template: { 1970 TemplateName ToTemplate = Importer.Import(From.getAsTemplate()); 1971 if (ToTemplate.isNull()) 1972 return TemplateArgument(); 1973 1974 return TemplateArgument(ToTemplate); 1975 } 1976 1977 case TemplateArgument::TemplateExpansion: { 1978 TemplateName ToTemplate 1979 = Importer.Import(From.getAsTemplateOrTemplatePattern()); 1980 if (ToTemplate.isNull()) 1981 return TemplateArgument(); 1982 1983 return TemplateArgument(ToTemplate, From.getNumTemplateExpansions()); 1984 } 1985 1986 case TemplateArgument::Expression: 1987 if (Expr *ToExpr = Importer.Import(From.getAsExpr())) 1988 return TemplateArgument(ToExpr); 1989 return TemplateArgument(); 1990 1991 case TemplateArgument::Pack: { 1992 SmallVector<TemplateArgument, 2> ToPack; 1993 ToPack.reserve(From.pack_size()); 1994 if (ImportTemplateArguments(From.pack_begin(), From.pack_size(), ToPack)) 1995 return TemplateArgument(); 1996 1997 TemplateArgument *ToArgs 1998 = new (Importer.getToContext()) TemplateArgument[ToPack.size()]; 1999 std::copy(ToPack.begin(), ToPack.end(), ToArgs); 2000 return TemplateArgument(ToArgs, ToPack.size()); 2001 } 2002 } 2003 2004 llvm_unreachable("Invalid template argument kind"); 2005 } 2006 2007 bool ASTNodeImporter::ImportTemplateArguments(const TemplateArgument *FromArgs, 2008 unsigned NumFromArgs, 2009 SmallVectorImpl<TemplateArgument> &ToArgs) { 2010 for (unsigned I = 0; I != NumFromArgs; ++I) { 2011 TemplateArgument To = ImportTemplateArgument(FromArgs[I]); 2012 if (To.isNull() && !FromArgs[I].isNull()) 2013 return true; 2014 2015 ToArgs.push_back(To); 2016 } 2017 2018 return false; 2019 } 2020 2021 bool ASTNodeImporter::IsStructuralMatch(RecordDecl *FromRecord, 2022 RecordDecl *ToRecord, bool Complain) { 2023 StructuralEquivalenceContext Ctx(Importer.getFromContext(), 2024 Importer.getToContext(), 2025 Importer.getNonEquivalentDecls(), 2026 false, Complain); 2027 return Ctx.IsStructurallyEquivalent(FromRecord, ToRecord); 2028 } 2029 2030 bool ASTNodeImporter::IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToEnum) { 2031 StructuralEquivalenceContext Ctx(Importer.getFromContext(), 2032 Importer.getToContext(), 2033 Importer.getNonEquivalentDecls()); 2034 return Ctx.IsStructurallyEquivalent(FromEnum, ToEnum); 2035 } 2036 2037 bool ASTNodeImporter::IsStructuralMatch(ClassTemplateDecl *From, 2038 ClassTemplateDecl *To) { 2039 StructuralEquivalenceContext Ctx(Importer.getFromContext(), 2040 Importer.getToContext(), 2041 Importer.getNonEquivalentDecls()); 2042 return Ctx.IsStructurallyEquivalent(From, To); 2043 } 2044 2045 Decl *ASTNodeImporter::VisitDecl(Decl *D) { 2046 Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node) 2047 << D->getDeclKindName(); 2048 return 0; 2049 } 2050 2051 Decl *ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 2052 TranslationUnitDecl *ToD = 2053 Importer.getToContext().getTranslationUnitDecl(); 2054 2055 Importer.Imported(D, ToD); 2056 2057 return ToD; 2058 } 2059 2060 Decl *ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) { 2061 // Import the major distinguishing characteristics of this namespace. 2062 DeclContext *DC, *LexicalDC; 2063 DeclarationName Name; 2064 SourceLocation Loc; 2065 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2066 return 0; 2067 2068 NamespaceDecl *MergeWithNamespace = 0; 2069 if (!Name) { 2070 // This is an anonymous namespace. Adopt an existing anonymous 2071 // namespace if we can. 2072 // FIXME: Not testable. 2073 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC)) 2074 MergeWithNamespace = TU->getAnonymousNamespace(); 2075 else 2076 MergeWithNamespace = cast<NamespaceDecl>(DC)->getAnonymousNamespace(); 2077 } else { 2078 SmallVector<NamedDecl *, 4> ConflictingDecls; 2079 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2080 DC->localUncachedLookup(Name, FoundDecls); 2081 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2082 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Namespace)) 2083 continue; 2084 2085 if (NamespaceDecl *FoundNS = dyn_cast<NamespaceDecl>(FoundDecls[I])) { 2086 MergeWithNamespace = FoundNS; 2087 ConflictingDecls.clear(); 2088 break; 2089 } 2090 2091 ConflictingDecls.push_back(FoundDecls[I]); 2092 } 2093 2094 if (!ConflictingDecls.empty()) { 2095 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Namespace, 2096 ConflictingDecls.data(), 2097 ConflictingDecls.size()); 2098 } 2099 } 2100 2101 // Create the "to" namespace, if needed. 2102 NamespaceDecl *ToNamespace = MergeWithNamespace; 2103 if (!ToNamespace) { 2104 ToNamespace = NamespaceDecl::Create(Importer.getToContext(), DC, 2105 D->isInline(), 2106 Importer.Import(D->getLocStart()), 2107 Loc, Name.getAsIdentifierInfo(), 2108 /*PrevDecl=*/0); 2109 ToNamespace->setLexicalDeclContext(LexicalDC); 2110 LexicalDC->addDeclInternal(ToNamespace); 2111 2112 // If this is an anonymous namespace, register it as the anonymous 2113 // namespace within its context. 2114 if (!Name) { 2115 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(DC)) 2116 TU->setAnonymousNamespace(ToNamespace); 2117 else 2118 cast<NamespaceDecl>(DC)->setAnonymousNamespace(ToNamespace); 2119 } 2120 } 2121 Importer.Imported(D, ToNamespace); 2122 2123 ImportDeclContext(D); 2124 2125 return ToNamespace; 2126 } 2127 2128 Decl *ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) { 2129 // Import the major distinguishing characteristics of this typedef. 2130 DeclContext *DC, *LexicalDC; 2131 DeclarationName Name; 2132 SourceLocation Loc; 2133 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2134 return 0; 2135 2136 // If this typedef is not in block scope, determine whether we've 2137 // seen a typedef with the same name (that we can merge with) or any 2138 // other entity by that name (which name lookup could conflict with). 2139 if (!DC->isFunctionOrMethod()) { 2140 SmallVector<NamedDecl *, 4> ConflictingDecls; 2141 unsigned IDNS = Decl::IDNS_Ordinary; 2142 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2143 DC->localUncachedLookup(Name, FoundDecls); 2144 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2145 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) 2146 continue; 2147 if (TypedefNameDecl *FoundTypedef = 2148 dyn_cast<TypedefNameDecl>(FoundDecls[I])) { 2149 if (Importer.IsStructurallyEquivalent(D->getUnderlyingType(), 2150 FoundTypedef->getUnderlyingType())) 2151 return Importer.Imported(D, FoundTypedef); 2152 } 2153 2154 ConflictingDecls.push_back(FoundDecls[I]); 2155 } 2156 2157 if (!ConflictingDecls.empty()) { 2158 Name = Importer.HandleNameConflict(Name, DC, IDNS, 2159 ConflictingDecls.data(), 2160 ConflictingDecls.size()); 2161 if (!Name) 2162 return 0; 2163 } 2164 } 2165 2166 // Import the underlying type of this typedef; 2167 QualType T = Importer.Import(D->getUnderlyingType()); 2168 if (T.isNull()) 2169 return 0; 2170 2171 // Create the new typedef node. 2172 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 2173 SourceLocation StartL = Importer.Import(D->getLocStart()); 2174 TypedefNameDecl *ToTypedef; 2175 if (IsAlias) 2176 ToTypedef = TypeAliasDecl::Create(Importer.getToContext(), DC, 2177 StartL, Loc, 2178 Name.getAsIdentifierInfo(), 2179 TInfo); 2180 else 2181 ToTypedef = TypedefDecl::Create(Importer.getToContext(), DC, 2182 StartL, Loc, 2183 Name.getAsIdentifierInfo(), 2184 TInfo); 2185 2186 ToTypedef->setAccess(D->getAccess()); 2187 ToTypedef->setLexicalDeclContext(LexicalDC); 2188 Importer.Imported(D, ToTypedef); 2189 LexicalDC->addDeclInternal(ToTypedef); 2190 2191 return ToTypedef; 2192 } 2193 2194 Decl *ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) { 2195 return VisitTypedefNameDecl(D, /*IsAlias=*/false); 2196 } 2197 2198 Decl *ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) { 2199 return VisitTypedefNameDecl(D, /*IsAlias=*/true); 2200 } 2201 2202 Decl *ASTNodeImporter::VisitEnumDecl(EnumDecl *D) { 2203 // Import the major distinguishing characteristics of this enum. 2204 DeclContext *DC, *LexicalDC; 2205 DeclarationName Name; 2206 SourceLocation Loc; 2207 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2208 return 0; 2209 2210 // Figure out what enum name we're looking for. 2211 unsigned IDNS = Decl::IDNS_Tag; 2212 DeclarationName SearchName = Name; 2213 if (!SearchName && D->getTypedefNameForAnonDecl()) { 2214 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName()); 2215 IDNS = Decl::IDNS_Ordinary; 2216 } else if (Importer.getToContext().getLangOpts().CPlusPlus) 2217 IDNS |= Decl::IDNS_Ordinary; 2218 2219 // We may already have an enum of the same name; try to find and match it. 2220 if (!DC->isFunctionOrMethod() && SearchName) { 2221 SmallVector<NamedDecl *, 4> ConflictingDecls; 2222 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2223 DC->localUncachedLookup(SearchName, FoundDecls); 2224 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2225 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) 2226 continue; 2227 2228 Decl *Found = FoundDecls[I]; 2229 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) { 2230 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>()) 2231 Found = Tag->getDecl(); 2232 } 2233 2234 if (EnumDecl *FoundEnum = dyn_cast<EnumDecl>(Found)) { 2235 if (IsStructuralMatch(D, FoundEnum)) 2236 return Importer.Imported(D, FoundEnum); 2237 } 2238 2239 ConflictingDecls.push_back(FoundDecls[I]); 2240 } 2241 2242 if (!ConflictingDecls.empty()) { 2243 Name = Importer.HandleNameConflict(Name, DC, IDNS, 2244 ConflictingDecls.data(), 2245 ConflictingDecls.size()); 2246 } 2247 } 2248 2249 // Create the enum declaration. 2250 EnumDecl *D2 = EnumDecl::Create(Importer.getToContext(), DC, 2251 Importer.Import(D->getLocStart()), 2252 Loc, Name.getAsIdentifierInfo(), 0, 2253 D->isScoped(), D->isScopedUsingClassTag(), 2254 D->isFixed()); 2255 // Import the qualifier, if any. 2256 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc())); 2257 D2->setAccess(D->getAccess()); 2258 D2->setLexicalDeclContext(LexicalDC); 2259 Importer.Imported(D, D2); 2260 LexicalDC->addDeclInternal(D2); 2261 2262 // Import the integer type. 2263 QualType ToIntegerType = Importer.Import(D->getIntegerType()); 2264 if (ToIntegerType.isNull()) 2265 return 0; 2266 D2->setIntegerType(ToIntegerType); 2267 2268 // Import the definition 2269 if (D->isCompleteDefinition() && ImportDefinition(D, D2)) 2270 return 0; 2271 2272 return D2; 2273 } 2274 2275 Decl *ASTNodeImporter::VisitRecordDecl(RecordDecl *D) { 2276 // If this record has a definition in the translation unit we're coming from, 2277 // but this particular declaration is not that definition, import the 2278 // definition and map to that. 2279 TagDecl *Definition = D->getDefinition(); 2280 if (Definition && Definition != D) { 2281 Decl *ImportedDef = Importer.Import(Definition); 2282 if (!ImportedDef) 2283 return 0; 2284 2285 return Importer.Imported(D, ImportedDef); 2286 } 2287 2288 // Import the major distinguishing characteristics of this record. 2289 DeclContext *DC, *LexicalDC; 2290 DeclarationName Name; 2291 SourceLocation Loc; 2292 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2293 return 0; 2294 2295 // Figure out what structure name we're looking for. 2296 unsigned IDNS = Decl::IDNS_Tag; 2297 DeclarationName SearchName = Name; 2298 if (!SearchName && D->getTypedefNameForAnonDecl()) { 2299 SearchName = Importer.Import(D->getTypedefNameForAnonDecl()->getDeclName()); 2300 IDNS = Decl::IDNS_Ordinary; 2301 } else if (Importer.getToContext().getLangOpts().CPlusPlus) 2302 IDNS |= Decl::IDNS_Ordinary; 2303 2304 // We may already have a record of the same name; try to find and match it. 2305 RecordDecl *AdoptDecl = 0; 2306 if (!DC->isFunctionOrMethod()) { 2307 SmallVector<NamedDecl *, 4> ConflictingDecls; 2308 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2309 DC->localUncachedLookup(SearchName, FoundDecls); 2310 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2311 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) 2312 continue; 2313 2314 Decl *Found = FoundDecls[I]; 2315 if (TypedefNameDecl *Typedef = dyn_cast<TypedefNameDecl>(Found)) { 2316 if (const TagType *Tag = Typedef->getUnderlyingType()->getAs<TagType>()) 2317 Found = Tag->getDecl(); 2318 } 2319 2320 if (RecordDecl *FoundRecord = dyn_cast<RecordDecl>(Found)) { 2321 if (RecordDecl *FoundDef = FoundRecord->getDefinition()) { 2322 if ((SearchName && !D->isCompleteDefinition()) 2323 || (D->isCompleteDefinition() && 2324 D->isAnonymousStructOrUnion() 2325 == FoundDef->isAnonymousStructOrUnion() && 2326 IsStructuralMatch(D, FoundDef))) { 2327 // The record types structurally match, or the "from" translation 2328 // unit only had a forward declaration anyway; call it the same 2329 // function. 2330 // FIXME: For C++, we should also merge methods here. 2331 return Importer.Imported(D, FoundDef); 2332 } 2333 } else if (!D->isCompleteDefinition()) { 2334 // We have a forward declaration of this type, so adopt that forward 2335 // declaration rather than building a new one. 2336 AdoptDecl = FoundRecord; 2337 continue; 2338 } else if (!SearchName) { 2339 continue; 2340 } 2341 } 2342 2343 ConflictingDecls.push_back(FoundDecls[I]); 2344 } 2345 2346 if (!ConflictingDecls.empty() && SearchName) { 2347 Name = Importer.HandleNameConflict(Name, DC, IDNS, 2348 ConflictingDecls.data(), 2349 ConflictingDecls.size()); 2350 } 2351 } 2352 2353 // Create the record declaration. 2354 RecordDecl *D2 = AdoptDecl; 2355 SourceLocation StartLoc = Importer.Import(D->getLocStart()); 2356 if (!D2) { 2357 if (isa<CXXRecordDecl>(D)) { 2358 CXXRecordDecl *D2CXX = CXXRecordDecl::Create(Importer.getToContext(), 2359 D->getTagKind(), 2360 DC, StartLoc, Loc, 2361 Name.getAsIdentifierInfo()); 2362 D2 = D2CXX; 2363 D2->setAccess(D->getAccess()); 2364 } else { 2365 D2 = RecordDecl::Create(Importer.getToContext(), D->getTagKind(), 2366 DC, StartLoc, Loc, Name.getAsIdentifierInfo()); 2367 } 2368 2369 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc())); 2370 D2->setLexicalDeclContext(LexicalDC); 2371 LexicalDC->addDeclInternal(D2); 2372 if (D->isAnonymousStructOrUnion()) 2373 D2->setAnonymousStructOrUnion(true); 2374 } 2375 2376 Importer.Imported(D, D2); 2377 2378 if (D->isCompleteDefinition() && ImportDefinition(D, D2, IDK_Default)) 2379 return 0; 2380 2381 return D2; 2382 } 2383 2384 Decl *ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) { 2385 // Import the major distinguishing characteristics of this enumerator. 2386 DeclContext *DC, *LexicalDC; 2387 DeclarationName Name; 2388 SourceLocation Loc; 2389 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2390 return 0; 2391 2392 QualType T = Importer.Import(D->getType()); 2393 if (T.isNull()) 2394 return 0; 2395 2396 // Determine whether there are any other declarations with the same name and 2397 // in the same context. 2398 if (!LexicalDC->isFunctionOrMethod()) { 2399 SmallVector<NamedDecl *, 4> ConflictingDecls; 2400 unsigned IDNS = Decl::IDNS_Ordinary; 2401 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2402 DC->localUncachedLookup(Name, FoundDecls); 2403 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2404 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) 2405 continue; 2406 2407 ConflictingDecls.push_back(FoundDecls[I]); 2408 } 2409 2410 if (!ConflictingDecls.empty()) { 2411 Name = Importer.HandleNameConflict(Name, DC, IDNS, 2412 ConflictingDecls.data(), 2413 ConflictingDecls.size()); 2414 if (!Name) 2415 return 0; 2416 } 2417 } 2418 2419 Expr *Init = Importer.Import(D->getInitExpr()); 2420 if (D->getInitExpr() && !Init) 2421 return 0; 2422 2423 EnumConstantDecl *ToEnumerator 2424 = EnumConstantDecl::Create(Importer.getToContext(), cast<EnumDecl>(DC), Loc, 2425 Name.getAsIdentifierInfo(), T, 2426 Init, D->getInitVal()); 2427 ToEnumerator->setAccess(D->getAccess()); 2428 ToEnumerator->setLexicalDeclContext(LexicalDC); 2429 Importer.Imported(D, ToEnumerator); 2430 LexicalDC->addDeclInternal(ToEnumerator); 2431 return ToEnumerator; 2432 } 2433 2434 Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) { 2435 // Import the major distinguishing characteristics of this function. 2436 DeclContext *DC, *LexicalDC; 2437 DeclarationName Name; 2438 SourceLocation Loc; 2439 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2440 return 0; 2441 2442 // Try to find a function in our own ("to") context with the same name, same 2443 // type, and in the same context as the function we're importing. 2444 if (!LexicalDC->isFunctionOrMethod()) { 2445 SmallVector<NamedDecl *, 4> ConflictingDecls; 2446 unsigned IDNS = Decl::IDNS_Ordinary; 2447 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2448 DC->localUncachedLookup(Name, FoundDecls); 2449 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2450 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) 2451 continue; 2452 2453 if (FunctionDecl *FoundFunction = dyn_cast<FunctionDecl>(FoundDecls[I])) { 2454 if (isExternalLinkage(FoundFunction->getLinkage()) && 2455 isExternalLinkage(D->getLinkage())) { 2456 if (Importer.IsStructurallyEquivalent(D->getType(), 2457 FoundFunction->getType())) { 2458 // FIXME: Actually try to merge the body and other attributes. 2459 return Importer.Imported(D, FoundFunction); 2460 } 2461 2462 // FIXME: Check for overloading more carefully, e.g., by boosting 2463 // Sema::IsOverload out to the AST library. 2464 2465 // Function overloading is okay in C++. 2466 if (Importer.getToContext().getLangOpts().CPlusPlus) 2467 continue; 2468 2469 // Complain about inconsistent function types. 2470 Importer.ToDiag(Loc, diag::err_odr_function_type_inconsistent) 2471 << Name << D->getType() << FoundFunction->getType(); 2472 Importer.ToDiag(FoundFunction->getLocation(), 2473 diag::note_odr_value_here) 2474 << FoundFunction->getType(); 2475 } 2476 } 2477 2478 ConflictingDecls.push_back(FoundDecls[I]); 2479 } 2480 2481 if (!ConflictingDecls.empty()) { 2482 Name = Importer.HandleNameConflict(Name, DC, IDNS, 2483 ConflictingDecls.data(), 2484 ConflictingDecls.size()); 2485 if (!Name) 2486 return 0; 2487 } 2488 } 2489 2490 DeclarationNameInfo NameInfo(Name, Loc); 2491 // Import additional name location/type info. 2492 ImportDeclarationNameLoc(D->getNameInfo(), NameInfo); 2493 2494 // Import the type. 2495 QualType T = Importer.Import(D->getType()); 2496 if (T.isNull()) 2497 return 0; 2498 2499 // Import the function parameters. 2500 SmallVector<ParmVarDecl *, 8> Parameters; 2501 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 2502 P != PEnd; ++P) { 2503 ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(*P)); 2504 if (!ToP) 2505 return 0; 2506 2507 Parameters.push_back(ToP); 2508 } 2509 2510 // Create the imported function. 2511 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 2512 FunctionDecl *ToFunction = 0; 2513 if (CXXConstructorDecl *FromConstructor = dyn_cast<CXXConstructorDecl>(D)) { 2514 ToFunction = CXXConstructorDecl::Create(Importer.getToContext(), 2515 cast<CXXRecordDecl>(DC), 2516 D->getInnerLocStart(), 2517 NameInfo, T, TInfo, 2518 FromConstructor->isExplicit(), 2519 D->isInlineSpecified(), 2520 D->isImplicit(), 2521 D->isConstexpr()); 2522 } else if (isa<CXXDestructorDecl>(D)) { 2523 ToFunction = CXXDestructorDecl::Create(Importer.getToContext(), 2524 cast<CXXRecordDecl>(DC), 2525 D->getInnerLocStart(), 2526 NameInfo, T, TInfo, 2527 D->isInlineSpecified(), 2528 D->isImplicit()); 2529 } else if (CXXConversionDecl *FromConversion 2530 = dyn_cast<CXXConversionDecl>(D)) { 2531 ToFunction = CXXConversionDecl::Create(Importer.getToContext(), 2532 cast<CXXRecordDecl>(DC), 2533 D->getInnerLocStart(), 2534 NameInfo, T, TInfo, 2535 D->isInlineSpecified(), 2536 FromConversion->isExplicit(), 2537 D->isConstexpr(), 2538 Importer.Import(D->getLocEnd())); 2539 } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { 2540 ToFunction = CXXMethodDecl::Create(Importer.getToContext(), 2541 cast<CXXRecordDecl>(DC), 2542 D->getInnerLocStart(), 2543 NameInfo, T, TInfo, 2544 Method->isStatic(), 2545 Method->getStorageClassAsWritten(), 2546 Method->isInlineSpecified(), 2547 D->isConstexpr(), 2548 Importer.Import(D->getLocEnd())); 2549 } else { 2550 ToFunction = FunctionDecl::Create(Importer.getToContext(), DC, 2551 D->getInnerLocStart(), 2552 NameInfo, T, TInfo, D->getStorageClass(), 2553 D->getStorageClassAsWritten(), 2554 D->isInlineSpecified(), 2555 D->hasWrittenPrototype(), 2556 D->isConstexpr()); 2557 } 2558 2559 // Import the qualifier, if any. 2560 ToFunction->setQualifierInfo(Importer.Import(D->getQualifierLoc())); 2561 ToFunction->setAccess(D->getAccess()); 2562 ToFunction->setLexicalDeclContext(LexicalDC); 2563 ToFunction->setVirtualAsWritten(D->isVirtualAsWritten()); 2564 ToFunction->setTrivial(D->isTrivial()); 2565 ToFunction->setPure(D->isPure()); 2566 Importer.Imported(D, ToFunction); 2567 2568 // Set the parameters. 2569 for (unsigned I = 0, N = Parameters.size(); I != N; ++I) { 2570 Parameters[I]->setOwningFunction(ToFunction); 2571 ToFunction->addDeclInternal(Parameters[I]); 2572 } 2573 ToFunction->setParams(Parameters); 2574 2575 // FIXME: Other bits to merge? 2576 2577 // Add this function to the lexical context. 2578 LexicalDC->addDeclInternal(ToFunction); 2579 2580 return ToFunction; 2581 } 2582 2583 Decl *ASTNodeImporter::VisitCXXMethodDecl(CXXMethodDecl *D) { 2584 return VisitFunctionDecl(D); 2585 } 2586 2587 Decl *ASTNodeImporter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 2588 return VisitCXXMethodDecl(D); 2589 } 2590 2591 Decl *ASTNodeImporter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 2592 return VisitCXXMethodDecl(D); 2593 } 2594 2595 Decl *ASTNodeImporter::VisitCXXConversionDecl(CXXConversionDecl *D) { 2596 return VisitCXXMethodDecl(D); 2597 } 2598 2599 Decl *ASTNodeImporter::VisitFieldDecl(FieldDecl *D) { 2600 // Import the major distinguishing characteristics of a variable. 2601 DeclContext *DC, *LexicalDC; 2602 DeclarationName Name; 2603 SourceLocation Loc; 2604 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2605 return 0; 2606 2607 // Determine whether we've already imported this field. 2608 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2609 DC->localUncachedLookup(Name, FoundDecls); 2610 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2611 if (FieldDecl *FoundField = dyn_cast<FieldDecl>(FoundDecls[I])) { 2612 if (Importer.IsStructurallyEquivalent(D->getType(), 2613 FoundField->getType())) { 2614 Importer.Imported(D, FoundField); 2615 return FoundField; 2616 } 2617 2618 Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent) 2619 << Name << D->getType() << FoundField->getType(); 2620 Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here) 2621 << FoundField->getType(); 2622 return 0; 2623 } 2624 } 2625 2626 // Import the type. 2627 QualType T = Importer.Import(D->getType()); 2628 if (T.isNull()) 2629 return 0; 2630 2631 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 2632 Expr *BitWidth = Importer.Import(D->getBitWidth()); 2633 if (!BitWidth && D->getBitWidth()) 2634 return 0; 2635 2636 FieldDecl *ToField = FieldDecl::Create(Importer.getToContext(), DC, 2637 Importer.Import(D->getInnerLocStart()), 2638 Loc, Name.getAsIdentifierInfo(), 2639 T, TInfo, BitWidth, D->isMutable(), 2640 D->getInClassInitStyle()); 2641 ToField->setAccess(D->getAccess()); 2642 ToField->setLexicalDeclContext(LexicalDC); 2643 if (ToField->hasInClassInitializer()) 2644 ToField->setInClassInitializer(D->getInClassInitializer()); 2645 Importer.Imported(D, ToField); 2646 LexicalDC->addDeclInternal(ToField); 2647 return ToField; 2648 } 2649 2650 Decl *ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 2651 // Import the major distinguishing characteristics of a variable. 2652 DeclContext *DC, *LexicalDC; 2653 DeclarationName Name; 2654 SourceLocation Loc; 2655 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2656 return 0; 2657 2658 // Determine whether we've already imported this field. 2659 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2660 DC->localUncachedLookup(Name, FoundDecls); 2661 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2662 if (IndirectFieldDecl *FoundField 2663 = dyn_cast<IndirectFieldDecl>(FoundDecls[I])) { 2664 if (Importer.IsStructurallyEquivalent(D->getType(), 2665 FoundField->getType(), 2666 Name)) { 2667 Importer.Imported(D, FoundField); 2668 return FoundField; 2669 } 2670 2671 // If there are more anonymous fields to check, continue. 2672 if (!Name && I < N-1) 2673 continue; 2674 2675 Importer.ToDiag(Loc, diag::err_odr_field_type_inconsistent) 2676 << Name << D->getType() << FoundField->getType(); 2677 Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here) 2678 << FoundField->getType(); 2679 return 0; 2680 } 2681 } 2682 2683 // Import the type. 2684 QualType T = Importer.Import(D->getType()); 2685 if (T.isNull()) 2686 return 0; 2687 2688 NamedDecl **NamedChain = 2689 new (Importer.getToContext())NamedDecl*[D->getChainingSize()]; 2690 2691 unsigned i = 0; 2692 for (IndirectFieldDecl::chain_iterator PI = D->chain_begin(), 2693 PE = D->chain_end(); PI != PE; ++PI) { 2694 Decl* D = Importer.Import(*PI); 2695 if (!D) 2696 return 0; 2697 NamedChain[i++] = cast<NamedDecl>(D); 2698 } 2699 2700 IndirectFieldDecl *ToIndirectField = IndirectFieldDecl::Create( 2701 Importer.getToContext(), DC, 2702 Loc, Name.getAsIdentifierInfo(), T, 2703 NamedChain, D->getChainingSize()); 2704 ToIndirectField->setAccess(D->getAccess()); 2705 ToIndirectField->setLexicalDeclContext(LexicalDC); 2706 Importer.Imported(D, ToIndirectField); 2707 LexicalDC->addDeclInternal(ToIndirectField); 2708 return ToIndirectField; 2709 } 2710 2711 Decl *ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 2712 // Import the major distinguishing characteristics of an ivar. 2713 DeclContext *DC, *LexicalDC; 2714 DeclarationName Name; 2715 SourceLocation Loc; 2716 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2717 return 0; 2718 2719 // Determine whether we've already imported this ivar 2720 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2721 DC->localUncachedLookup(Name, FoundDecls); 2722 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2723 if (ObjCIvarDecl *FoundIvar = dyn_cast<ObjCIvarDecl>(FoundDecls[I])) { 2724 if (Importer.IsStructurallyEquivalent(D->getType(), 2725 FoundIvar->getType())) { 2726 Importer.Imported(D, FoundIvar); 2727 return FoundIvar; 2728 } 2729 2730 Importer.ToDiag(Loc, diag::err_odr_ivar_type_inconsistent) 2731 << Name << D->getType() << FoundIvar->getType(); 2732 Importer.ToDiag(FoundIvar->getLocation(), diag::note_odr_value_here) 2733 << FoundIvar->getType(); 2734 return 0; 2735 } 2736 } 2737 2738 // Import the type. 2739 QualType T = Importer.Import(D->getType()); 2740 if (T.isNull()) 2741 return 0; 2742 2743 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 2744 Expr *BitWidth = Importer.Import(D->getBitWidth()); 2745 if (!BitWidth && D->getBitWidth()) 2746 return 0; 2747 2748 ObjCIvarDecl *ToIvar = ObjCIvarDecl::Create(Importer.getToContext(), 2749 cast<ObjCContainerDecl>(DC), 2750 Importer.Import(D->getInnerLocStart()), 2751 Loc, Name.getAsIdentifierInfo(), 2752 T, TInfo, D->getAccessControl(), 2753 BitWidth, D->getSynthesize()); 2754 ToIvar->setLexicalDeclContext(LexicalDC); 2755 Importer.Imported(D, ToIvar); 2756 LexicalDC->addDeclInternal(ToIvar); 2757 return ToIvar; 2758 2759 } 2760 2761 Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) { 2762 // Import the major distinguishing characteristics of a variable. 2763 DeclContext *DC, *LexicalDC; 2764 DeclarationName Name; 2765 SourceLocation Loc; 2766 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2767 return 0; 2768 2769 // Try to find a variable in our own ("to") context with the same name and 2770 // in the same context as the variable we're importing. 2771 if (D->isFileVarDecl()) { 2772 VarDecl *MergeWithVar = 0; 2773 SmallVector<NamedDecl *, 4> ConflictingDecls; 2774 unsigned IDNS = Decl::IDNS_Ordinary; 2775 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2776 DC->localUncachedLookup(Name, FoundDecls); 2777 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2778 if (!FoundDecls[I]->isInIdentifierNamespace(IDNS)) 2779 continue; 2780 2781 if (VarDecl *FoundVar = dyn_cast<VarDecl>(FoundDecls[I])) { 2782 // We have found a variable that we may need to merge with. Check it. 2783 if (isExternalLinkage(FoundVar->getLinkage()) && 2784 isExternalLinkage(D->getLinkage())) { 2785 if (Importer.IsStructurallyEquivalent(D->getType(), 2786 FoundVar->getType())) { 2787 MergeWithVar = FoundVar; 2788 break; 2789 } 2790 2791 const ArrayType *FoundArray 2792 = Importer.getToContext().getAsArrayType(FoundVar->getType()); 2793 const ArrayType *TArray 2794 = Importer.getToContext().getAsArrayType(D->getType()); 2795 if (FoundArray && TArray) { 2796 if (isa<IncompleteArrayType>(FoundArray) && 2797 isa<ConstantArrayType>(TArray)) { 2798 // Import the type. 2799 QualType T = Importer.Import(D->getType()); 2800 if (T.isNull()) 2801 return 0; 2802 2803 FoundVar->setType(T); 2804 MergeWithVar = FoundVar; 2805 break; 2806 } else if (isa<IncompleteArrayType>(TArray) && 2807 isa<ConstantArrayType>(FoundArray)) { 2808 MergeWithVar = FoundVar; 2809 break; 2810 } 2811 } 2812 2813 Importer.ToDiag(Loc, diag::err_odr_variable_type_inconsistent) 2814 << Name << D->getType() << FoundVar->getType(); 2815 Importer.ToDiag(FoundVar->getLocation(), diag::note_odr_value_here) 2816 << FoundVar->getType(); 2817 } 2818 } 2819 2820 ConflictingDecls.push_back(FoundDecls[I]); 2821 } 2822 2823 if (MergeWithVar) { 2824 // An equivalent variable with external linkage has been found. Link 2825 // the two declarations, then merge them. 2826 Importer.Imported(D, MergeWithVar); 2827 2828 if (VarDecl *DDef = D->getDefinition()) { 2829 if (VarDecl *ExistingDef = MergeWithVar->getDefinition()) { 2830 Importer.ToDiag(ExistingDef->getLocation(), 2831 diag::err_odr_variable_multiple_def) 2832 << Name; 2833 Importer.FromDiag(DDef->getLocation(), diag::note_odr_defined_here); 2834 } else { 2835 Expr *Init = Importer.Import(DDef->getInit()); 2836 MergeWithVar->setInit(Init); 2837 if (DDef->isInitKnownICE()) { 2838 EvaluatedStmt *Eval = MergeWithVar->ensureEvaluatedStmt(); 2839 Eval->CheckedICE = true; 2840 Eval->IsICE = DDef->isInitICE(); 2841 } 2842 } 2843 } 2844 2845 return MergeWithVar; 2846 } 2847 2848 if (!ConflictingDecls.empty()) { 2849 Name = Importer.HandleNameConflict(Name, DC, IDNS, 2850 ConflictingDecls.data(), 2851 ConflictingDecls.size()); 2852 if (!Name) 2853 return 0; 2854 } 2855 } 2856 2857 // Import the type. 2858 QualType T = Importer.Import(D->getType()); 2859 if (T.isNull()) 2860 return 0; 2861 2862 // Create the imported variable. 2863 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 2864 VarDecl *ToVar = VarDecl::Create(Importer.getToContext(), DC, 2865 Importer.Import(D->getInnerLocStart()), 2866 Loc, Name.getAsIdentifierInfo(), 2867 T, TInfo, 2868 D->getStorageClass(), 2869 D->getStorageClassAsWritten()); 2870 ToVar->setQualifierInfo(Importer.Import(D->getQualifierLoc())); 2871 ToVar->setAccess(D->getAccess()); 2872 ToVar->setLexicalDeclContext(LexicalDC); 2873 Importer.Imported(D, ToVar); 2874 LexicalDC->addDeclInternal(ToVar); 2875 2876 // Merge the initializer. 2877 // FIXME: Can we really import any initializer? Alternatively, we could force 2878 // ourselves to import every declaration of a variable and then only use 2879 // getInit() here. 2880 ToVar->setInit(Importer.Import(const_cast<Expr *>(D->getAnyInitializer()))); 2881 2882 // FIXME: Other bits to merge? 2883 2884 return ToVar; 2885 } 2886 2887 Decl *ASTNodeImporter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 2888 // Parameters are created in the translation unit's context, then moved 2889 // into the function declaration's context afterward. 2890 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl(); 2891 2892 // Import the name of this declaration. 2893 DeclarationName Name = Importer.Import(D->getDeclName()); 2894 if (D->getDeclName() && !Name) 2895 return 0; 2896 2897 // Import the location of this declaration. 2898 SourceLocation Loc = Importer.Import(D->getLocation()); 2899 2900 // Import the parameter's type. 2901 QualType T = Importer.Import(D->getType()); 2902 if (T.isNull()) 2903 return 0; 2904 2905 // Create the imported parameter. 2906 ImplicitParamDecl *ToParm 2907 = ImplicitParamDecl::Create(Importer.getToContext(), DC, 2908 Loc, Name.getAsIdentifierInfo(), 2909 T); 2910 return Importer.Imported(D, ToParm); 2911 } 2912 2913 Decl *ASTNodeImporter::VisitParmVarDecl(ParmVarDecl *D) { 2914 // Parameters are created in the translation unit's context, then moved 2915 // into the function declaration's context afterward. 2916 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl(); 2917 2918 // Import the name of this declaration. 2919 DeclarationName Name = Importer.Import(D->getDeclName()); 2920 if (D->getDeclName() && !Name) 2921 return 0; 2922 2923 // Import the location of this declaration. 2924 SourceLocation Loc = Importer.Import(D->getLocation()); 2925 2926 // Import the parameter's type. 2927 QualType T = Importer.Import(D->getType()); 2928 if (T.isNull()) 2929 return 0; 2930 2931 // Create the imported parameter. 2932 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 2933 ParmVarDecl *ToParm = ParmVarDecl::Create(Importer.getToContext(), DC, 2934 Importer.Import(D->getInnerLocStart()), 2935 Loc, Name.getAsIdentifierInfo(), 2936 T, TInfo, D->getStorageClass(), 2937 D->getStorageClassAsWritten(), 2938 /*FIXME: Default argument*/ 0); 2939 ToParm->setHasInheritedDefaultArg(D->hasInheritedDefaultArg()); 2940 return Importer.Imported(D, ToParm); 2941 } 2942 2943 Decl *ASTNodeImporter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 2944 // Import the major distinguishing characteristics of a method. 2945 DeclContext *DC, *LexicalDC; 2946 DeclarationName Name; 2947 SourceLocation Loc; 2948 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 2949 return 0; 2950 2951 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 2952 DC->localUncachedLookup(Name, FoundDecls); 2953 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 2954 if (ObjCMethodDecl *FoundMethod = dyn_cast<ObjCMethodDecl>(FoundDecls[I])) { 2955 if (FoundMethod->isInstanceMethod() != D->isInstanceMethod()) 2956 continue; 2957 2958 // Check return types. 2959 if (!Importer.IsStructurallyEquivalent(D->getResultType(), 2960 FoundMethod->getResultType())) { 2961 Importer.ToDiag(Loc, diag::err_odr_objc_method_result_type_inconsistent) 2962 << D->isInstanceMethod() << Name 2963 << D->getResultType() << FoundMethod->getResultType(); 2964 Importer.ToDiag(FoundMethod->getLocation(), 2965 diag::note_odr_objc_method_here) 2966 << D->isInstanceMethod() << Name; 2967 return 0; 2968 } 2969 2970 // Check the number of parameters. 2971 if (D->param_size() != FoundMethod->param_size()) { 2972 Importer.ToDiag(Loc, diag::err_odr_objc_method_num_params_inconsistent) 2973 << D->isInstanceMethod() << Name 2974 << D->param_size() << FoundMethod->param_size(); 2975 Importer.ToDiag(FoundMethod->getLocation(), 2976 diag::note_odr_objc_method_here) 2977 << D->isInstanceMethod() << Name; 2978 return 0; 2979 } 2980 2981 // Check parameter types. 2982 for (ObjCMethodDecl::param_iterator P = D->param_begin(), 2983 PEnd = D->param_end(), FoundP = FoundMethod->param_begin(); 2984 P != PEnd; ++P, ++FoundP) { 2985 if (!Importer.IsStructurallyEquivalent((*P)->getType(), 2986 (*FoundP)->getType())) { 2987 Importer.FromDiag((*P)->getLocation(), 2988 diag::err_odr_objc_method_param_type_inconsistent) 2989 << D->isInstanceMethod() << Name 2990 << (*P)->getType() << (*FoundP)->getType(); 2991 Importer.ToDiag((*FoundP)->getLocation(), diag::note_odr_value_here) 2992 << (*FoundP)->getType(); 2993 return 0; 2994 } 2995 } 2996 2997 // Check variadic/non-variadic. 2998 // Check the number of parameters. 2999 if (D->isVariadic() != FoundMethod->isVariadic()) { 3000 Importer.ToDiag(Loc, diag::err_odr_objc_method_variadic_inconsistent) 3001 << D->isInstanceMethod() << Name; 3002 Importer.ToDiag(FoundMethod->getLocation(), 3003 diag::note_odr_objc_method_here) 3004 << D->isInstanceMethod() << Name; 3005 return 0; 3006 } 3007 3008 // FIXME: Any other bits we need to merge? 3009 return Importer.Imported(D, FoundMethod); 3010 } 3011 } 3012 3013 // Import the result type. 3014 QualType ResultTy = Importer.Import(D->getResultType()); 3015 if (ResultTy.isNull()) 3016 return 0; 3017 3018 TypeSourceInfo *ResultTInfo = Importer.Import(D->getResultTypeSourceInfo()); 3019 3020 ObjCMethodDecl *ToMethod 3021 = ObjCMethodDecl::Create(Importer.getToContext(), 3022 Loc, 3023 Importer.Import(D->getLocEnd()), 3024 Name.getObjCSelector(), 3025 ResultTy, ResultTInfo, DC, 3026 D->isInstanceMethod(), 3027 D->isVariadic(), 3028 D->isSynthesized(), 3029 D->isImplicit(), 3030 D->isDefined(), 3031 D->getImplementationControl(), 3032 D->hasRelatedResultType()); 3033 3034 // FIXME: When we decide to merge method definitions, we'll need to 3035 // deal with implicit parameters. 3036 3037 // Import the parameters 3038 SmallVector<ParmVarDecl *, 5> ToParams; 3039 for (ObjCMethodDecl::param_iterator FromP = D->param_begin(), 3040 FromPEnd = D->param_end(); 3041 FromP != FromPEnd; 3042 ++FromP) { 3043 ParmVarDecl *ToP = cast_or_null<ParmVarDecl>(Importer.Import(*FromP)); 3044 if (!ToP) 3045 return 0; 3046 3047 ToParams.push_back(ToP); 3048 } 3049 3050 // Set the parameters. 3051 for (unsigned I = 0, N = ToParams.size(); I != N; ++I) { 3052 ToParams[I]->setOwningFunction(ToMethod); 3053 ToMethod->addDeclInternal(ToParams[I]); 3054 } 3055 SmallVector<SourceLocation, 12> SelLocs; 3056 D->getSelectorLocs(SelLocs); 3057 ToMethod->setMethodParams(Importer.getToContext(), ToParams, SelLocs); 3058 3059 ToMethod->setLexicalDeclContext(LexicalDC); 3060 Importer.Imported(D, ToMethod); 3061 LexicalDC->addDeclInternal(ToMethod); 3062 return ToMethod; 3063 } 3064 3065 Decl *ASTNodeImporter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 3066 // Import the major distinguishing characteristics of a category. 3067 DeclContext *DC, *LexicalDC; 3068 DeclarationName Name; 3069 SourceLocation Loc; 3070 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 3071 return 0; 3072 3073 ObjCInterfaceDecl *ToInterface 3074 = cast_or_null<ObjCInterfaceDecl>(Importer.Import(D->getClassInterface())); 3075 if (!ToInterface) 3076 return 0; 3077 3078 // Determine if we've already encountered this category. 3079 ObjCCategoryDecl *MergeWithCategory 3080 = ToInterface->FindCategoryDeclaration(Name.getAsIdentifierInfo()); 3081 ObjCCategoryDecl *ToCategory = MergeWithCategory; 3082 if (!ToCategory) { 3083 ToCategory = ObjCCategoryDecl::Create(Importer.getToContext(), DC, 3084 Importer.Import(D->getAtStartLoc()), 3085 Loc, 3086 Importer.Import(D->getCategoryNameLoc()), 3087 Name.getAsIdentifierInfo(), 3088 ToInterface, 3089 Importer.Import(D->getIvarLBraceLoc()), 3090 Importer.Import(D->getIvarRBraceLoc())); 3091 ToCategory->setLexicalDeclContext(LexicalDC); 3092 LexicalDC->addDeclInternal(ToCategory); 3093 Importer.Imported(D, ToCategory); 3094 3095 // Import protocols 3096 SmallVector<ObjCProtocolDecl *, 4> Protocols; 3097 SmallVector<SourceLocation, 4> ProtocolLocs; 3098 ObjCCategoryDecl::protocol_loc_iterator FromProtoLoc 3099 = D->protocol_loc_begin(); 3100 for (ObjCCategoryDecl::protocol_iterator FromProto = D->protocol_begin(), 3101 FromProtoEnd = D->protocol_end(); 3102 FromProto != FromProtoEnd; 3103 ++FromProto, ++FromProtoLoc) { 3104 ObjCProtocolDecl *ToProto 3105 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto)); 3106 if (!ToProto) 3107 return 0; 3108 Protocols.push_back(ToProto); 3109 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc)); 3110 } 3111 3112 // FIXME: If we're merging, make sure that the protocol list is the same. 3113 ToCategory->setProtocolList(Protocols.data(), Protocols.size(), 3114 ProtocolLocs.data(), Importer.getToContext()); 3115 3116 } else { 3117 Importer.Imported(D, ToCategory); 3118 } 3119 3120 // Import all of the members of this category. 3121 ImportDeclContext(D); 3122 3123 // If we have an implementation, import it as well. 3124 if (D->getImplementation()) { 3125 ObjCCategoryImplDecl *Impl 3126 = cast_or_null<ObjCCategoryImplDecl>( 3127 Importer.Import(D->getImplementation())); 3128 if (!Impl) 3129 return 0; 3130 3131 ToCategory->setImplementation(Impl); 3132 } 3133 3134 return ToCategory; 3135 } 3136 3137 bool ASTNodeImporter::ImportDefinition(ObjCProtocolDecl *From, 3138 ObjCProtocolDecl *To, 3139 ImportDefinitionKind Kind) { 3140 if (To->getDefinition()) { 3141 if (shouldForceImportDeclContext(Kind)) 3142 ImportDeclContext(From); 3143 return false; 3144 } 3145 3146 // Start the protocol definition 3147 To->startDefinition(); 3148 3149 // Import protocols 3150 SmallVector<ObjCProtocolDecl *, 4> Protocols; 3151 SmallVector<SourceLocation, 4> ProtocolLocs; 3152 ObjCProtocolDecl::protocol_loc_iterator 3153 FromProtoLoc = From->protocol_loc_begin(); 3154 for (ObjCProtocolDecl::protocol_iterator FromProto = From->protocol_begin(), 3155 FromProtoEnd = From->protocol_end(); 3156 FromProto != FromProtoEnd; 3157 ++FromProto, ++FromProtoLoc) { 3158 ObjCProtocolDecl *ToProto 3159 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto)); 3160 if (!ToProto) 3161 return true; 3162 Protocols.push_back(ToProto); 3163 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc)); 3164 } 3165 3166 // FIXME: If we're merging, make sure that the protocol list is the same. 3167 To->setProtocolList(Protocols.data(), Protocols.size(), 3168 ProtocolLocs.data(), Importer.getToContext()); 3169 3170 if (shouldForceImportDeclContext(Kind)) { 3171 // Import all of the members of this protocol. 3172 ImportDeclContext(From, /*ForceImport=*/true); 3173 } 3174 return false; 3175 } 3176 3177 Decl *ASTNodeImporter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 3178 // If this protocol has a definition in the translation unit we're coming 3179 // from, but this particular declaration is not that definition, import the 3180 // definition and map to that. 3181 ObjCProtocolDecl *Definition = D->getDefinition(); 3182 if (Definition && Definition != D) { 3183 Decl *ImportedDef = Importer.Import(Definition); 3184 if (!ImportedDef) 3185 return 0; 3186 3187 return Importer.Imported(D, ImportedDef); 3188 } 3189 3190 // Import the major distinguishing characteristics of a protocol. 3191 DeclContext *DC, *LexicalDC; 3192 DeclarationName Name; 3193 SourceLocation Loc; 3194 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 3195 return 0; 3196 3197 ObjCProtocolDecl *MergeWithProtocol = 0; 3198 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 3199 DC->localUncachedLookup(Name, FoundDecls); 3200 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 3201 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_ObjCProtocol)) 3202 continue; 3203 3204 if ((MergeWithProtocol = dyn_cast<ObjCProtocolDecl>(FoundDecls[I]))) 3205 break; 3206 } 3207 3208 ObjCProtocolDecl *ToProto = MergeWithProtocol; 3209 if (!ToProto) { 3210 ToProto = ObjCProtocolDecl::Create(Importer.getToContext(), DC, 3211 Name.getAsIdentifierInfo(), Loc, 3212 Importer.Import(D->getAtStartLoc()), 3213 /*PrevDecl=*/0); 3214 ToProto->setLexicalDeclContext(LexicalDC); 3215 LexicalDC->addDeclInternal(ToProto); 3216 } 3217 3218 Importer.Imported(D, ToProto); 3219 3220 if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToProto)) 3221 return 0; 3222 3223 return ToProto; 3224 } 3225 3226 bool ASTNodeImporter::ImportDefinition(ObjCInterfaceDecl *From, 3227 ObjCInterfaceDecl *To, 3228 ImportDefinitionKind Kind) { 3229 if (To->getDefinition()) { 3230 // Check consistency of superclass. 3231 ObjCInterfaceDecl *FromSuper = From->getSuperClass(); 3232 if (FromSuper) { 3233 FromSuper = cast_or_null<ObjCInterfaceDecl>(Importer.Import(FromSuper)); 3234 if (!FromSuper) 3235 return true; 3236 } 3237 3238 ObjCInterfaceDecl *ToSuper = To->getSuperClass(); 3239 if ((bool)FromSuper != (bool)ToSuper || 3240 (FromSuper && !declaresSameEntity(FromSuper, ToSuper))) { 3241 Importer.ToDiag(To->getLocation(), 3242 diag::err_odr_objc_superclass_inconsistent) 3243 << To->getDeclName(); 3244 if (ToSuper) 3245 Importer.ToDiag(To->getSuperClassLoc(), diag::note_odr_objc_superclass) 3246 << To->getSuperClass()->getDeclName(); 3247 else 3248 Importer.ToDiag(To->getLocation(), 3249 diag::note_odr_objc_missing_superclass); 3250 if (From->getSuperClass()) 3251 Importer.FromDiag(From->getSuperClassLoc(), 3252 diag::note_odr_objc_superclass) 3253 << From->getSuperClass()->getDeclName(); 3254 else 3255 Importer.FromDiag(From->getLocation(), 3256 diag::note_odr_objc_missing_superclass); 3257 } 3258 3259 if (shouldForceImportDeclContext(Kind)) 3260 ImportDeclContext(From); 3261 return false; 3262 } 3263 3264 // Start the definition. 3265 To->startDefinition(); 3266 3267 // If this class has a superclass, import it. 3268 if (From->getSuperClass()) { 3269 ObjCInterfaceDecl *Super = cast_or_null<ObjCInterfaceDecl>( 3270 Importer.Import(From->getSuperClass())); 3271 if (!Super) 3272 return true; 3273 3274 To->setSuperClass(Super); 3275 To->setSuperClassLoc(Importer.Import(From->getSuperClassLoc())); 3276 } 3277 3278 // Import protocols 3279 SmallVector<ObjCProtocolDecl *, 4> Protocols; 3280 SmallVector<SourceLocation, 4> ProtocolLocs; 3281 ObjCInterfaceDecl::protocol_loc_iterator 3282 FromProtoLoc = From->protocol_loc_begin(); 3283 3284 for (ObjCInterfaceDecl::protocol_iterator FromProto = From->protocol_begin(), 3285 FromProtoEnd = From->protocol_end(); 3286 FromProto != FromProtoEnd; 3287 ++FromProto, ++FromProtoLoc) { 3288 ObjCProtocolDecl *ToProto 3289 = cast_or_null<ObjCProtocolDecl>(Importer.Import(*FromProto)); 3290 if (!ToProto) 3291 return true; 3292 Protocols.push_back(ToProto); 3293 ProtocolLocs.push_back(Importer.Import(*FromProtoLoc)); 3294 } 3295 3296 // FIXME: If we're merging, make sure that the protocol list is the same. 3297 To->setProtocolList(Protocols.data(), Protocols.size(), 3298 ProtocolLocs.data(), Importer.getToContext()); 3299 3300 // Import categories. When the categories themselves are imported, they'll 3301 // hook themselves into this interface. 3302 for (ObjCCategoryDecl *FromCat = From->getCategoryList(); FromCat; 3303 FromCat = FromCat->getNextClassCategory()) 3304 Importer.Import(FromCat); 3305 3306 // If we have an @implementation, import it as well. 3307 if (From->getImplementation()) { 3308 ObjCImplementationDecl *Impl = cast_or_null<ObjCImplementationDecl>( 3309 Importer.Import(From->getImplementation())); 3310 if (!Impl) 3311 return true; 3312 3313 To->setImplementation(Impl); 3314 } 3315 3316 if (shouldForceImportDeclContext(Kind)) { 3317 // Import all of the members of this class. 3318 ImportDeclContext(From, /*ForceImport=*/true); 3319 } 3320 return false; 3321 } 3322 3323 Decl *ASTNodeImporter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 3324 // If this class has a definition in the translation unit we're coming from, 3325 // but this particular declaration is not that definition, import the 3326 // definition and map to that. 3327 ObjCInterfaceDecl *Definition = D->getDefinition(); 3328 if (Definition && Definition != D) { 3329 Decl *ImportedDef = Importer.Import(Definition); 3330 if (!ImportedDef) 3331 return 0; 3332 3333 return Importer.Imported(D, ImportedDef); 3334 } 3335 3336 // Import the major distinguishing characteristics of an @interface. 3337 DeclContext *DC, *LexicalDC; 3338 DeclarationName Name; 3339 SourceLocation Loc; 3340 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 3341 return 0; 3342 3343 // Look for an existing interface with the same name. 3344 ObjCInterfaceDecl *MergeWithIface = 0; 3345 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 3346 DC->localUncachedLookup(Name, FoundDecls); 3347 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 3348 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary)) 3349 continue; 3350 3351 if ((MergeWithIface = dyn_cast<ObjCInterfaceDecl>(FoundDecls[I]))) 3352 break; 3353 } 3354 3355 // Create an interface declaration, if one does not already exist. 3356 ObjCInterfaceDecl *ToIface = MergeWithIface; 3357 if (!ToIface) { 3358 ToIface = ObjCInterfaceDecl::Create(Importer.getToContext(), DC, 3359 Importer.Import(D->getAtStartLoc()), 3360 Name.getAsIdentifierInfo(), 3361 /*PrevDecl=*/0,Loc, 3362 D->isImplicitInterfaceDecl()); 3363 ToIface->setLexicalDeclContext(LexicalDC); 3364 LexicalDC->addDeclInternal(ToIface); 3365 } 3366 Importer.Imported(D, ToIface); 3367 3368 if (D->isThisDeclarationADefinition() && ImportDefinition(D, ToIface)) 3369 return 0; 3370 3371 return ToIface; 3372 } 3373 3374 Decl *ASTNodeImporter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 3375 ObjCCategoryDecl *Category = cast_or_null<ObjCCategoryDecl>( 3376 Importer.Import(D->getCategoryDecl())); 3377 if (!Category) 3378 return 0; 3379 3380 ObjCCategoryImplDecl *ToImpl = Category->getImplementation(); 3381 if (!ToImpl) { 3382 DeclContext *DC = Importer.ImportContext(D->getDeclContext()); 3383 if (!DC) 3384 return 0; 3385 3386 SourceLocation CategoryNameLoc = Importer.Import(D->getCategoryNameLoc()); 3387 ToImpl = ObjCCategoryImplDecl::Create(Importer.getToContext(), DC, 3388 Importer.Import(D->getIdentifier()), 3389 Category->getClassInterface(), 3390 Importer.Import(D->getLocation()), 3391 Importer.Import(D->getAtStartLoc()), 3392 CategoryNameLoc); 3393 3394 DeclContext *LexicalDC = DC; 3395 if (D->getDeclContext() != D->getLexicalDeclContext()) { 3396 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); 3397 if (!LexicalDC) 3398 return 0; 3399 3400 ToImpl->setLexicalDeclContext(LexicalDC); 3401 } 3402 3403 LexicalDC->addDeclInternal(ToImpl); 3404 Category->setImplementation(ToImpl); 3405 } 3406 3407 Importer.Imported(D, ToImpl); 3408 ImportDeclContext(D); 3409 return ToImpl; 3410 } 3411 3412 Decl *ASTNodeImporter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 3413 // Find the corresponding interface. 3414 ObjCInterfaceDecl *Iface = cast_or_null<ObjCInterfaceDecl>( 3415 Importer.Import(D->getClassInterface())); 3416 if (!Iface) 3417 return 0; 3418 3419 // Import the superclass, if any. 3420 ObjCInterfaceDecl *Super = 0; 3421 if (D->getSuperClass()) { 3422 Super = cast_or_null<ObjCInterfaceDecl>( 3423 Importer.Import(D->getSuperClass())); 3424 if (!Super) 3425 return 0; 3426 } 3427 3428 ObjCImplementationDecl *Impl = Iface->getImplementation(); 3429 if (!Impl) { 3430 // We haven't imported an implementation yet. Create a new @implementation 3431 // now. 3432 Impl = ObjCImplementationDecl::Create(Importer.getToContext(), 3433 Importer.ImportContext(D->getDeclContext()), 3434 Iface, Super, 3435 Importer.Import(D->getLocation()), 3436 Importer.Import(D->getAtStartLoc()), 3437 Importer.Import(D->getIvarLBraceLoc()), 3438 Importer.Import(D->getIvarRBraceLoc())); 3439 3440 if (D->getDeclContext() != D->getLexicalDeclContext()) { 3441 DeclContext *LexicalDC 3442 = Importer.ImportContext(D->getLexicalDeclContext()); 3443 if (!LexicalDC) 3444 return 0; 3445 Impl->setLexicalDeclContext(LexicalDC); 3446 } 3447 3448 // Associate the implementation with the class it implements. 3449 Iface->setImplementation(Impl); 3450 Importer.Imported(D, Iface->getImplementation()); 3451 } else { 3452 Importer.Imported(D, Iface->getImplementation()); 3453 3454 // Verify that the existing @implementation has the same superclass. 3455 if ((Super && !Impl->getSuperClass()) || 3456 (!Super && Impl->getSuperClass()) || 3457 (Super && Impl->getSuperClass() && 3458 !declaresSameEntity(Super->getCanonicalDecl(), Impl->getSuperClass()))) { 3459 Importer.ToDiag(Impl->getLocation(), 3460 diag::err_odr_objc_superclass_inconsistent) 3461 << Iface->getDeclName(); 3462 // FIXME: It would be nice to have the location of the superclass 3463 // below. 3464 if (Impl->getSuperClass()) 3465 Importer.ToDiag(Impl->getLocation(), 3466 diag::note_odr_objc_superclass) 3467 << Impl->getSuperClass()->getDeclName(); 3468 else 3469 Importer.ToDiag(Impl->getLocation(), 3470 diag::note_odr_objc_missing_superclass); 3471 if (D->getSuperClass()) 3472 Importer.FromDiag(D->getLocation(), 3473 diag::note_odr_objc_superclass) 3474 << D->getSuperClass()->getDeclName(); 3475 else 3476 Importer.FromDiag(D->getLocation(), 3477 diag::note_odr_objc_missing_superclass); 3478 return 0; 3479 } 3480 } 3481 3482 // Import all of the members of this @implementation. 3483 ImportDeclContext(D); 3484 3485 return Impl; 3486 } 3487 3488 Decl *ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 3489 // Import the major distinguishing characteristics of an @property. 3490 DeclContext *DC, *LexicalDC; 3491 DeclarationName Name; 3492 SourceLocation Loc; 3493 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 3494 return 0; 3495 3496 // Check whether we have already imported this property. 3497 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 3498 DC->localUncachedLookup(Name, FoundDecls); 3499 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 3500 if (ObjCPropertyDecl *FoundProp 3501 = dyn_cast<ObjCPropertyDecl>(FoundDecls[I])) { 3502 // Check property types. 3503 if (!Importer.IsStructurallyEquivalent(D->getType(), 3504 FoundProp->getType())) { 3505 Importer.ToDiag(Loc, diag::err_odr_objc_property_type_inconsistent) 3506 << Name << D->getType() << FoundProp->getType(); 3507 Importer.ToDiag(FoundProp->getLocation(), diag::note_odr_value_here) 3508 << FoundProp->getType(); 3509 return 0; 3510 } 3511 3512 // FIXME: Check property attributes, getters, setters, etc.? 3513 3514 // Consider these properties to be equivalent. 3515 Importer.Imported(D, FoundProp); 3516 return FoundProp; 3517 } 3518 } 3519 3520 // Import the type. 3521 TypeSourceInfo *T = Importer.Import(D->getTypeSourceInfo()); 3522 if (!T) 3523 return 0; 3524 3525 // Create the new property. 3526 ObjCPropertyDecl *ToProperty 3527 = ObjCPropertyDecl::Create(Importer.getToContext(), DC, Loc, 3528 Name.getAsIdentifierInfo(), 3529 Importer.Import(D->getAtLoc()), 3530 Importer.Import(D->getLParenLoc()), 3531 T, 3532 D->getPropertyImplementation()); 3533 Importer.Imported(D, ToProperty); 3534 ToProperty->setLexicalDeclContext(LexicalDC); 3535 LexicalDC->addDeclInternal(ToProperty); 3536 3537 ToProperty->setPropertyAttributes(D->getPropertyAttributes()); 3538 ToProperty->setPropertyAttributesAsWritten( 3539 D->getPropertyAttributesAsWritten()); 3540 ToProperty->setGetterName(Importer.Import(D->getGetterName())); 3541 ToProperty->setSetterName(Importer.Import(D->getSetterName())); 3542 ToProperty->setGetterMethodDecl( 3543 cast_or_null<ObjCMethodDecl>(Importer.Import(D->getGetterMethodDecl()))); 3544 ToProperty->setSetterMethodDecl( 3545 cast_or_null<ObjCMethodDecl>(Importer.Import(D->getSetterMethodDecl()))); 3546 ToProperty->setPropertyIvarDecl( 3547 cast_or_null<ObjCIvarDecl>(Importer.Import(D->getPropertyIvarDecl()))); 3548 return ToProperty; 3549 } 3550 3551 Decl *ASTNodeImporter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 3552 ObjCPropertyDecl *Property = cast_or_null<ObjCPropertyDecl>( 3553 Importer.Import(D->getPropertyDecl())); 3554 if (!Property) 3555 return 0; 3556 3557 DeclContext *DC = Importer.ImportContext(D->getDeclContext()); 3558 if (!DC) 3559 return 0; 3560 3561 // Import the lexical declaration context. 3562 DeclContext *LexicalDC = DC; 3563 if (D->getDeclContext() != D->getLexicalDeclContext()) { 3564 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); 3565 if (!LexicalDC) 3566 return 0; 3567 } 3568 3569 ObjCImplDecl *InImpl = dyn_cast<ObjCImplDecl>(LexicalDC); 3570 if (!InImpl) 3571 return 0; 3572 3573 // Import the ivar (for an @synthesize). 3574 ObjCIvarDecl *Ivar = 0; 3575 if (D->getPropertyIvarDecl()) { 3576 Ivar = cast_or_null<ObjCIvarDecl>( 3577 Importer.Import(D->getPropertyIvarDecl())); 3578 if (!Ivar) 3579 return 0; 3580 } 3581 3582 ObjCPropertyImplDecl *ToImpl 3583 = InImpl->FindPropertyImplDecl(Property->getIdentifier()); 3584 if (!ToImpl) { 3585 ToImpl = ObjCPropertyImplDecl::Create(Importer.getToContext(), DC, 3586 Importer.Import(D->getLocStart()), 3587 Importer.Import(D->getLocation()), 3588 Property, 3589 D->getPropertyImplementation(), 3590 Ivar, 3591 Importer.Import(D->getPropertyIvarDeclLoc())); 3592 ToImpl->setLexicalDeclContext(LexicalDC); 3593 Importer.Imported(D, ToImpl); 3594 LexicalDC->addDeclInternal(ToImpl); 3595 } else { 3596 // Check that we have the same kind of property implementation (@synthesize 3597 // vs. @dynamic). 3598 if (D->getPropertyImplementation() != ToImpl->getPropertyImplementation()) { 3599 Importer.ToDiag(ToImpl->getLocation(), 3600 diag::err_odr_objc_property_impl_kind_inconsistent) 3601 << Property->getDeclName() 3602 << (ToImpl->getPropertyImplementation() 3603 == ObjCPropertyImplDecl::Dynamic); 3604 Importer.FromDiag(D->getLocation(), 3605 diag::note_odr_objc_property_impl_kind) 3606 << D->getPropertyDecl()->getDeclName() 3607 << (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic); 3608 return 0; 3609 } 3610 3611 // For @synthesize, check that we have the same 3612 if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize && 3613 Ivar != ToImpl->getPropertyIvarDecl()) { 3614 Importer.ToDiag(ToImpl->getPropertyIvarDeclLoc(), 3615 diag::err_odr_objc_synthesize_ivar_inconsistent) 3616 << Property->getDeclName() 3617 << ToImpl->getPropertyIvarDecl()->getDeclName() 3618 << Ivar->getDeclName(); 3619 Importer.FromDiag(D->getPropertyIvarDeclLoc(), 3620 diag::note_odr_objc_synthesize_ivar_here) 3621 << D->getPropertyIvarDecl()->getDeclName(); 3622 return 0; 3623 } 3624 3625 // Merge the existing implementation with the new implementation. 3626 Importer.Imported(D, ToImpl); 3627 } 3628 3629 return ToImpl; 3630 } 3631 3632 Decl *ASTNodeImporter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 3633 // For template arguments, we adopt the translation unit as our declaration 3634 // context. This context will be fixed when the actual template declaration 3635 // is created. 3636 3637 // FIXME: Import default argument. 3638 return TemplateTypeParmDecl::Create(Importer.getToContext(), 3639 Importer.getToContext().getTranslationUnitDecl(), 3640 Importer.Import(D->getLocStart()), 3641 Importer.Import(D->getLocation()), 3642 D->getDepth(), 3643 D->getIndex(), 3644 Importer.Import(D->getIdentifier()), 3645 D->wasDeclaredWithTypename(), 3646 D->isParameterPack()); 3647 } 3648 3649 Decl * 3650 ASTNodeImporter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 3651 // Import the name of this declaration. 3652 DeclarationName Name = Importer.Import(D->getDeclName()); 3653 if (D->getDeclName() && !Name) 3654 return 0; 3655 3656 // Import the location of this declaration. 3657 SourceLocation Loc = Importer.Import(D->getLocation()); 3658 3659 // Import the type of this declaration. 3660 QualType T = Importer.Import(D->getType()); 3661 if (T.isNull()) 3662 return 0; 3663 3664 // Import type-source information. 3665 TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo()); 3666 if (D->getTypeSourceInfo() && !TInfo) 3667 return 0; 3668 3669 // FIXME: Import default argument. 3670 3671 return NonTypeTemplateParmDecl::Create(Importer.getToContext(), 3672 Importer.getToContext().getTranslationUnitDecl(), 3673 Importer.Import(D->getInnerLocStart()), 3674 Loc, D->getDepth(), D->getPosition(), 3675 Name.getAsIdentifierInfo(), 3676 T, D->isParameterPack(), TInfo); 3677 } 3678 3679 Decl * 3680 ASTNodeImporter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 3681 // Import the name of this declaration. 3682 DeclarationName Name = Importer.Import(D->getDeclName()); 3683 if (D->getDeclName() && !Name) 3684 return 0; 3685 3686 // Import the location of this declaration. 3687 SourceLocation Loc = Importer.Import(D->getLocation()); 3688 3689 // Import template parameters. 3690 TemplateParameterList *TemplateParams 3691 = ImportTemplateParameterList(D->getTemplateParameters()); 3692 if (!TemplateParams) 3693 return 0; 3694 3695 // FIXME: Import default argument. 3696 3697 return TemplateTemplateParmDecl::Create(Importer.getToContext(), 3698 Importer.getToContext().getTranslationUnitDecl(), 3699 Loc, D->getDepth(), D->getPosition(), 3700 D->isParameterPack(), 3701 Name.getAsIdentifierInfo(), 3702 TemplateParams); 3703 } 3704 3705 Decl *ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 3706 // If this record has a definition in the translation unit we're coming from, 3707 // but this particular declaration is not that definition, import the 3708 // definition and map to that. 3709 CXXRecordDecl *Definition 3710 = cast_or_null<CXXRecordDecl>(D->getTemplatedDecl()->getDefinition()); 3711 if (Definition && Definition != D->getTemplatedDecl()) { 3712 Decl *ImportedDef 3713 = Importer.Import(Definition->getDescribedClassTemplate()); 3714 if (!ImportedDef) 3715 return 0; 3716 3717 return Importer.Imported(D, ImportedDef); 3718 } 3719 3720 // Import the major distinguishing characteristics of this class template. 3721 DeclContext *DC, *LexicalDC; 3722 DeclarationName Name; 3723 SourceLocation Loc; 3724 if (ImportDeclParts(D, DC, LexicalDC, Name, Loc)) 3725 return 0; 3726 3727 // We may already have a template of the same name; try to find and match it. 3728 if (!DC->isFunctionOrMethod()) { 3729 SmallVector<NamedDecl *, 4> ConflictingDecls; 3730 llvm::SmallVector<NamedDecl *, 2> FoundDecls; 3731 DC->localUncachedLookup(Name, FoundDecls); 3732 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) { 3733 if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary)) 3734 continue; 3735 3736 Decl *Found = FoundDecls[I]; 3737 if (ClassTemplateDecl *FoundTemplate 3738 = dyn_cast<ClassTemplateDecl>(Found)) { 3739 if (IsStructuralMatch(D, FoundTemplate)) { 3740 // The class templates structurally match; call it the same template. 3741 // FIXME: We may be filling in a forward declaration here. Handle 3742 // this case! 3743 Importer.Imported(D->getTemplatedDecl(), 3744 FoundTemplate->getTemplatedDecl()); 3745 return Importer.Imported(D, FoundTemplate); 3746 } 3747 } 3748 3749 ConflictingDecls.push_back(FoundDecls[I]); 3750 } 3751 3752 if (!ConflictingDecls.empty()) { 3753 Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary, 3754 ConflictingDecls.data(), 3755 ConflictingDecls.size()); 3756 } 3757 3758 if (!Name) 3759 return 0; 3760 } 3761 3762 CXXRecordDecl *DTemplated = D->getTemplatedDecl(); 3763 3764 // Create the declaration that is being templated. 3765 SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart()); 3766 SourceLocation IdLoc = Importer.Import(DTemplated->getLocation()); 3767 CXXRecordDecl *D2Templated = CXXRecordDecl::Create(Importer.getToContext(), 3768 DTemplated->getTagKind(), 3769 DC, StartLoc, IdLoc, 3770 Name.getAsIdentifierInfo()); 3771 D2Templated->setAccess(DTemplated->getAccess()); 3772 D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc())); 3773 D2Templated->setLexicalDeclContext(LexicalDC); 3774 3775 // Create the class template declaration itself. 3776 TemplateParameterList *TemplateParams 3777 = ImportTemplateParameterList(D->getTemplateParameters()); 3778 if (!TemplateParams) 3779 return 0; 3780 3781 ClassTemplateDecl *D2 = ClassTemplateDecl::Create(Importer.getToContext(), DC, 3782 Loc, Name, TemplateParams, 3783 D2Templated, 3784 /*PrevDecl=*/0); 3785 D2Templated->setDescribedClassTemplate(D2); 3786 3787 D2->setAccess(D->getAccess()); 3788 D2->setLexicalDeclContext(LexicalDC); 3789 LexicalDC->addDeclInternal(D2); 3790 3791 // Note the relationship between the class templates. 3792 Importer.Imported(D, D2); 3793 Importer.Imported(DTemplated, D2Templated); 3794 3795 if (DTemplated->isCompleteDefinition() && 3796 !D2Templated->isCompleteDefinition()) { 3797 // FIXME: Import definition! 3798 } 3799 3800 return D2; 3801 } 3802 3803 Decl *ASTNodeImporter::VisitClassTemplateSpecializationDecl( 3804 ClassTemplateSpecializationDecl *D) { 3805 // If this record has a definition in the translation unit we're coming from, 3806 // but this particular declaration is not that definition, import the 3807 // definition and map to that. 3808 TagDecl *Definition = D->getDefinition(); 3809 if (Definition && Definition != D) { 3810 Decl *ImportedDef = Importer.Import(Definition); 3811 if (!ImportedDef) 3812 return 0; 3813 3814 return Importer.Imported(D, ImportedDef); 3815 } 3816 3817 ClassTemplateDecl *ClassTemplate 3818 = cast_or_null<ClassTemplateDecl>(Importer.Import( 3819 D->getSpecializedTemplate())); 3820 if (!ClassTemplate) 3821 return 0; 3822 3823 // Import the context of this declaration. 3824 DeclContext *DC = ClassTemplate->getDeclContext(); 3825 if (!DC) 3826 return 0; 3827 3828 DeclContext *LexicalDC = DC; 3829 if (D->getDeclContext() != D->getLexicalDeclContext()) { 3830 LexicalDC = Importer.ImportContext(D->getLexicalDeclContext()); 3831 if (!LexicalDC) 3832 return 0; 3833 } 3834 3835 // Import the location of this declaration. 3836 SourceLocation StartLoc = Importer.Import(D->getLocStart()); 3837 SourceLocation IdLoc = Importer.Import(D->getLocation()); 3838 3839 // Import template arguments. 3840 SmallVector<TemplateArgument, 2> TemplateArgs; 3841 if (ImportTemplateArguments(D->getTemplateArgs().data(), 3842 D->getTemplateArgs().size(), 3843 TemplateArgs)) 3844 return 0; 3845 3846 // Try to find an existing specialization with these template arguments. 3847 void *InsertPos = 0; 3848 ClassTemplateSpecializationDecl *D2 3849 = ClassTemplate->findSpecialization(TemplateArgs.data(), 3850 TemplateArgs.size(), InsertPos); 3851 if (D2) { 3852 // We already have a class template specialization with these template 3853 // arguments. 3854 3855 // FIXME: Check for specialization vs. instantiation errors. 3856 3857 if (RecordDecl *FoundDef = D2->getDefinition()) { 3858 if (!D->isCompleteDefinition() || IsStructuralMatch(D, FoundDef)) { 3859 // The record types structurally match, or the "from" translation 3860 // unit only had a forward declaration anyway; call it the same 3861 // function. 3862 return Importer.Imported(D, FoundDef); 3863 } 3864 } 3865 } else { 3866 // Create a new specialization. 3867 D2 = ClassTemplateSpecializationDecl::Create(Importer.getToContext(), 3868 D->getTagKind(), DC, 3869 StartLoc, IdLoc, 3870 ClassTemplate, 3871 TemplateArgs.data(), 3872 TemplateArgs.size(), 3873 /*PrevDecl=*/0); 3874 D2->setSpecializationKind(D->getSpecializationKind()); 3875 3876 // Add this specialization to the class template. 3877 ClassTemplate->AddSpecialization(D2, InsertPos); 3878 3879 // Import the qualifier, if any. 3880 D2->setQualifierInfo(Importer.Import(D->getQualifierLoc())); 3881 3882 // Add the specialization to this context. 3883 D2->setLexicalDeclContext(LexicalDC); 3884 LexicalDC->addDeclInternal(D2); 3885 } 3886 Importer.Imported(D, D2); 3887 3888 if (D->isCompleteDefinition() && ImportDefinition(D, D2)) 3889 return 0; 3890 3891 return D2; 3892 } 3893 3894 //---------------------------------------------------------------------------- 3895 // Import Statements 3896 //---------------------------------------------------------------------------- 3897 3898 Stmt *ASTNodeImporter::VisitStmt(Stmt *S) { 3899 Importer.FromDiag(S->getLocStart(), diag::err_unsupported_ast_node) 3900 << S->getStmtClassName(); 3901 return 0; 3902 } 3903 3904 //---------------------------------------------------------------------------- 3905 // Import Expressions 3906 //---------------------------------------------------------------------------- 3907 Expr *ASTNodeImporter::VisitExpr(Expr *E) { 3908 Importer.FromDiag(E->getLocStart(), diag::err_unsupported_ast_node) 3909 << E->getStmtClassName(); 3910 return 0; 3911 } 3912 3913 Expr *ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) { 3914 ValueDecl *ToD = cast_or_null<ValueDecl>(Importer.Import(E->getDecl())); 3915 if (!ToD) 3916 return 0; 3917 3918 NamedDecl *FoundD = 0; 3919 if (E->getDecl() != E->getFoundDecl()) { 3920 FoundD = cast_or_null<NamedDecl>(Importer.Import(E->getFoundDecl())); 3921 if (!FoundD) 3922 return 0; 3923 } 3924 3925 QualType T = Importer.Import(E->getType()); 3926 if (T.isNull()) 3927 return 0; 3928 3929 DeclRefExpr *DRE = DeclRefExpr::Create(Importer.getToContext(), 3930 Importer.Import(E->getQualifierLoc()), 3931 Importer.Import(E->getTemplateKeywordLoc()), 3932 ToD, 3933 E->refersToEnclosingLocal(), 3934 Importer.Import(E->getLocation()), 3935 T, E->getValueKind(), 3936 FoundD, 3937 /*FIXME:TemplateArgs=*/0); 3938 if (E->hadMultipleCandidates()) 3939 DRE->setHadMultipleCandidates(true); 3940 return DRE; 3941 } 3942 3943 Expr *ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) { 3944 QualType T = Importer.Import(E->getType()); 3945 if (T.isNull()) 3946 return 0; 3947 3948 return IntegerLiteral::Create(Importer.getToContext(), 3949 E->getValue(), T, 3950 Importer.Import(E->getLocation())); 3951 } 3952 3953 Expr *ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) { 3954 QualType T = Importer.Import(E->getType()); 3955 if (T.isNull()) 3956 return 0; 3957 3958 return new (Importer.getToContext()) CharacterLiteral(E->getValue(), 3959 E->getKind(), T, 3960 Importer.Import(E->getLocation())); 3961 } 3962 3963 Expr *ASTNodeImporter::VisitParenExpr(ParenExpr *E) { 3964 Expr *SubExpr = Importer.Import(E->getSubExpr()); 3965 if (!SubExpr) 3966 return 0; 3967 3968 return new (Importer.getToContext()) 3969 ParenExpr(Importer.Import(E->getLParen()), 3970 Importer.Import(E->getRParen()), 3971 SubExpr); 3972 } 3973 3974 Expr *ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) { 3975 QualType T = Importer.Import(E->getType()); 3976 if (T.isNull()) 3977 return 0; 3978 3979 Expr *SubExpr = Importer.Import(E->getSubExpr()); 3980 if (!SubExpr) 3981 return 0; 3982 3983 return new (Importer.getToContext()) UnaryOperator(SubExpr, E->getOpcode(), 3984 T, E->getValueKind(), 3985 E->getObjectKind(), 3986 Importer.Import(E->getOperatorLoc())); 3987 } 3988 3989 Expr *ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr( 3990 UnaryExprOrTypeTraitExpr *E) { 3991 QualType ResultType = Importer.Import(E->getType()); 3992 3993 if (E->isArgumentType()) { 3994 TypeSourceInfo *TInfo = Importer.Import(E->getArgumentTypeInfo()); 3995 if (!TInfo) 3996 return 0; 3997 3998 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(), 3999 TInfo, ResultType, 4000 Importer.Import(E->getOperatorLoc()), 4001 Importer.Import(E->getRParenLoc())); 4002 } 4003 4004 Expr *SubExpr = Importer.Import(E->getArgumentExpr()); 4005 if (!SubExpr) 4006 return 0; 4007 4008 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(E->getKind(), 4009 SubExpr, ResultType, 4010 Importer.Import(E->getOperatorLoc()), 4011 Importer.Import(E->getRParenLoc())); 4012 } 4013 4014 Expr *ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) { 4015 QualType T = Importer.Import(E->getType()); 4016 if (T.isNull()) 4017 return 0; 4018 4019 Expr *LHS = Importer.Import(E->getLHS()); 4020 if (!LHS) 4021 return 0; 4022 4023 Expr *RHS = Importer.Import(E->getRHS()); 4024 if (!RHS) 4025 return 0; 4026 4027 return new (Importer.getToContext()) BinaryOperator(LHS, RHS, E->getOpcode(), 4028 T, E->getValueKind(), 4029 E->getObjectKind(), 4030 Importer.Import(E->getOperatorLoc())); 4031 } 4032 4033 Expr *ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) { 4034 QualType T = Importer.Import(E->getType()); 4035 if (T.isNull()) 4036 return 0; 4037 4038 QualType CompLHSType = Importer.Import(E->getComputationLHSType()); 4039 if (CompLHSType.isNull()) 4040 return 0; 4041 4042 QualType CompResultType = Importer.Import(E->getComputationResultType()); 4043 if (CompResultType.isNull()) 4044 return 0; 4045 4046 Expr *LHS = Importer.Import(E->getLHS()); 4047 if (!LHS) 4048 return 0; 4049 4050 Expr *RHS = Importer.Import(E->getRHS()); 4051 if (!RHS) 4052 return 0; 4053 4054 return new (Importer.getToContext()) 4055 CompoundAssignOperator(LHS, RHS, E->getOpcode(), 4056 T, E->getValueKind(), 4057 E->getObjectKind(), 4058 CompLHSType, CompResultType, 4059 Importer.Import(E->getOperatorLoc())); 4060 } 4061 4062 static bool ImportCastPath(CastExpr *E, CXXCastPath &Path) { 4063 if (E->path_empty()) return false; 4064 4065 // TODO: import cast paths 4066 return true; 4067 } 4068 4069 Expr *ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) { 4070 QualType T = Importer.Import(E->getType()); 4071 if (T.isNull()) 4072 return 0; 4073 4074 Expr *SubExpr = Importer.Import(E->getSubExpr()); 4075 if (!SubExpr) 4076 return 0; 4077 4078 CXXCastPath BasePath; 4079 if (ImportCastPath(E, BasePath)) 4080 return 0; 4081 4082 return ImplicitCastExpr::Create(Importer.getToContext(), T, E->getCastKind(), 4083 SubExpr, &BasePath, E->getValueKind()); 4084 } 4085 4086 Expr *ASTNodeImporter::VisitCStyleCastExpr(CStyleCastExpr *E) { 4087 QualType T = Importer.Import(E->getType()); 4088 if (T.isNull()) 4089 return 0; 4090 4091 Expr *SubExpr = Importer.Import(E->getSubExpr()); 4092 if (!SubExpr) 4093 return 0; 4094 4095 TypeSourceInfo *TInfo = Importer.Import(E->getTypeInfoAsWritten()); 4096 if (!TInfo && E->getTypeInfoAsWritten()) 4097 return 0; 4098 4099 CXXCastPath BasePath; 4100 if (ImportCastPath(E, BasePath)) 4101 return 0; 4102 4103 return CStyleCastExpr::Create(Importer.getToContext(), T, 4104 E->getValueKind(), E->getCastKind(), 4105 SubExpr, &BasePath, TInfo, 4106 Importer.Import(E->getLParenLoc()), 4107 Importer.Import(E->getRParenLoc())); 4108 } 4109 4110 ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager, 4111 ASTContext &FromContext, FileManager &FromFileManager, 4112 bool MinimalImport) 4113 : ToContext(ToContext), FromContext(FromContext), 4114 ToFileManager(ToFileManager), FromFileManager(FromFileManager), 4115 Minimal(MinimalImport) 4116 { 4117 ImportedDecls[FromContext.getTranslationUnitDecl()] 4118 = ToContext.getTranslationUnitDecl(); 4119 } 4120 4121 ASTImporter::~ASTImporter() { } 4122 4123 QualType ASTImporter::Import(QualType FromT) { 4124 if (FromT.isNull()) 4125 return QualType(); 4126 4127 const Type *fromTy = FromT.getTypePtr(); 4128 4129 // Check whether we've already imported this type. 4130 llvm::DenseMap<const Type *, const Type *>::iterator Pos 4131 = ImportedTypes.find(fromTy); 4132 if (Pos != ImportedTypes.end()) 4133 return ToContext.getQualifiedType(Pos->second, FromT.getLocalQualifiers()); 4134 4135 // Import the type 4136 ASTNodeImporter Importer(*this); 4137 QualType ToT = Importer.Visit(fromTy); 4138 if (ToT.isNull()) 4139 return ToT; 4140 4141 // Record the imported type. 4142 ImportedTypes[fromTy] = ToT.getTypePtr(); 4143 4144 return ToContext.getQualifiedType(ToT, FromT.getLocalQualifiers()); 4145 } 4146 4147 TypeSourceInfo *ASTImporter::Import(TypeSourceInfo *FromTSI) { 4148 if (!FromTSI) 4149 return FromTSI; 4150 4151 // FIXME: For now we just create a "trivial" type source info based 4152 // on the type and a single location. Implement a real version of this. 4153 QualType T = Import(FromTSI->getType()); 4154 if (T.isNull()) 4155 return 0; 4156 4157 return ToContext.getTrivialTypeSourceInfo(T, 4158 FromTSI->getTypeLoc().getLocStart()); 4159 } 4160 4161 Decl *ASTImporter::Import(Decl *FromD) { 4162 if (!FromD) 4163 return 0; 4164 4165 ASTNodeImporter Importer(*this); 4166 4167 // Check whether we've already imported this declaration. 4168 llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(FromD); 4169 if (Pos != ImportedDecls.end()) { 4170 Decl *ToD = Pos->second; 4171 Importer.ImportDefinitionIfNeeded(FromD, ToD); 4172 return ToD; 4173 } 4174 4175 // Import the type 4176 Decl *ToD = Importer.Visit(FromD); 4177 if (!ToD) 4178 return 0; 4179 4180 // Record the imported declaration. 4181 ImportedDecls[FromD] = ToD; 4182 4183 if (TagDecl *FromTag = dyn_cast<TagDecl>(FromD)) { 4184 // Keep track of anonymous tags that have an associated typedef. 4185 if (FromTag->getTypedefNameForAnonDecl()) 4186 AnonTagsWithPendingTypedefs.push_back(FromTag); 4187 } else if (TypedefNameDecl *FromTypedef = dyn_cast<TypedefNameDecl>(FromD)) { 4188 // When we've finished transforming a typedef, see whether it was the 4189 // typedef for an anonymous tag. 4190 for (SmallVector<TagDecl *, 4>::iterator 4191 FromTag = AnonTagsWithPendingTypedefs.begin(), 4192 FromTagEnd = AnonTagsWithPendingTypedefs.end(); 4193 FromTag != FromTagEnd; ++FromTag) { 4194 if ((*FromTag)->getTypedefNameForAnonDecl() == FromTypedef) { 4195 if (TagDecl *ToTag = cast_or_null<TagDecl>(Import(*FromTag))) { 4196 // We found the typedef for an anonymous tag; link them. 4197 ToTag->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(ToD)); 4198 AnonTagsWithPendingTypedefs.erase(FromTag); 4199 break; 4200 } 4201 } 4202 } 4203 } 4204 4205 return ToD; 4206 } 4207 4208 DeclContext *ASTImporter::ImportContext(DeclContext *FromDC) { 4209 if (!FromDC) 4210 return FromDC; 4211 4212 DeclContext *ToDC = cast_or_null<DeclContext>(Import(cast<Decl>(FromDC))); 4213 if (!ToDC) 4214 return 0; 4215 4216 // When we're using a record/enum/Objective-C class/protocol as a context, we 4217 // need it to have a definition. 4218 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(ToDC)) { 4219 RecordDecl *FromRecord = cast<RecordDecl>(FromDC); 4220 if (ToRecord->isCompleteDefinition()) { 4221 // Do nothing. 4222 } else if (FromRecord->isCompleteDefinition()) { 4223 ASTNodeImporter(*this).ImportDefinition(FromRecord, ToRecord, 4224 ASTNodeImporter::IDK_Basic); 4225 } else { 4226 CompleteDecl(ToRecord); 4227 } 4228 } else if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(ToDC)) { 4229 EnumDecl *FromEnum = cast<EnumDecl>(FromDC); 4230 if (ToEnum->isCompleteDefinition()) { 4231 // Do nothing. 4232 } else if (FromEnum->isCompleteDefinition()) { 4233 ASTNodeImporter(*this).ImportDefinition(FromEnum, ToEnum, 4234 ASTNodeImporter::IDK_Basic); 4235 } else { 4236 CompleteDecl(ToEnum); 4237 } 4238 } else if (ObjCInterfaceDecl *ToClass = dyn_cast<ObjCInterfaceDecl>(ToDC)) { 4239 ObjCInterfaceDecl *FromClass = cast<ObjCInterfaceDecl>(FromDC); 4240 if (ToClass->getDefinition()) { 4241 // Do nothing. 4242 } else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) { 4243 ASTNodeImporter(*this).ImportDefinition(FromDef, ToClass, 4244 ASTNodeImporter::IDK_Basic); 4245 } else { 4246 CompleteDecl(ToClass); 4247 } 4248 } else if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(ToDC)) { 4249 ObjCProtocolDecl *FromProto = cast<ObjCProtocolDecl>(FromDC); 4250 if (ToProto->getDefinition()) { 4251 // Do nothing. 4252 } else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) { 4253 ASTNodeImporter(*this).ImportDefinition(FromDef, ToProto, 4254 ASTNodeImporter::IDK_Basic); 4255 } else { 4256 CompleteDecl(ToProto); 4257 } 4258 } 4259 4260 return ToDC; 4261 } 4262 4263 Expr *ASTImporter::Import(Expr *FromE) { 4264 if (!FromE) 4265 return 0; 4266 4267 return cast_or_null<Expr>(Import(cast<Stmt>(FromE))); 4268 } 4269 4270 Stmt *ASTImporter::Import(Stmt *FromS) { 4271 if (!FromS) 4272 return 0; 4273 4274 // Check whether we've already imported this declaration. 4275 llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(FromS); 4276 if (Pos != ImportedStmts.end()) 4277 return Pos->second; 4278 4279 // Import the type 4280 ASTNodeImporter Importer(*this); 4281 Stmt *ToS = Importer.Visit(FromS); 4282 if (!ToS) 4283 return 0; 4284 4285 // Record the imported declaration. 4286 ImportedStmts[FromS] = ToS; 4287 return ToS; 4288 } 4289 4290 NestedNameSpecifier *ASTImporter::Import(NestedNameSpecifier *FromNNS) { 4291 if (!FromNNS) 4292 return 0; 4293 4294 NestedNameSpecifier *prefix = Import(FromNNS->getPrefix()); 4295 4296 switch (FromNNS->getKind()) { 4297 case NestedNameSpecifier::Identifier: 4298 if (IdentifierInfo *II = Import(FromNNS->getAsIdentifier())) { 4299 return NestedNameSpecifier::Create(ToContext, prefix, II); 4300 } 4301 return 0; 4302 4303 case NestedNameSpecifier::Namespace: 4304 if (NamespaceDecl *NS = 4305 cast<NamespaceDecl>(Import(FromNNS->getAsNamespace()))) { 4306 return NestedNameSpecifier::Create(ToContext, prefix, NS); 4307 } 4308 return 0; 4309 4310 case NestedNameSpecifier::NamespaceAlias: 4311 if (NamespaceAliasDecl *NSAD = 4312 cast<NamespaceAliasDecl>(Import(FromNNS->getAsNamespaceAlias()))) { 4313 return NestedNameSpecifier::Create(ToContext, prefix, NSAD); 4314 } 4315 return 0; 4316 4317 case NestedNameSpecifier::Global: 4318 return NestedNameSpecifier::GlobalSpecifier(ToContext); 4319 4320 case NestedNameSpecifier::TypeSpec: 4321 case NestedNameSpecifier::TypeSpecWithTemplate: { 4322 QualType T = Import(QualType(FromNNS->getAsType(), 0u)); 4323 if (!T.isNull()) { 4324 bool bTemplate = FromNNS->getKind() == 4325 NestedNameSpecifier::TypeSpecWithTemplate; 4326 return NestedNameSpecifier::Create(ToContext, prefix, 4327 bTemplate, T.getTypePtr()); 4328 } 4329 } 4330 return 0; 4331 } 4332 4333 llvm_unreachable("Invalid nested name specifier kind"); 4334 } 4335 4336 NestedNameSpecifierLoc ASTImporter::Import(NestedNameSpecifierLoc FromNNS) { 4337 // FIXME: Implement! 4338 return NestedNameSpecifierLoc(); 4339 } 4340 4341 TemplateName ASTImporter::Import(TemplateName From) { 4342 switch (From.getKind()) { 4343 case TemplateName::Template: 4344 if (TemplateDecl *ToTemplate 4345 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl()))) 4346 return TemplateName(ToTemplate); 4347 4348 return TemplateName(); 4349 4350 case TemplateName::OverloadedTemplate: { 4351 OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate(); 4352 UnresolvedSet<2> ToTemplates; 4353 for (OverloadedTemplateStorage::iterator I = FromStorage->begin(), 4354 E = FromStorage->end(); 4355 I != E; ++I) { 4356 if (NamedDecl *To = cast_or_null<NamedDecl>(Import(*I))) 4357 ToTemplates.addDecl(To); 4358 else 4359 return TemplateName(); 4360 } 4361 return ToContext.getOverloadedTemplateName(ToTemplates.begin(), 4362 ToTemplates.end()); 4363 } 4364 4365 case TemplateName::QualifiedTemplate: { 4366 QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName(); 4367 NestedNameSpecifier *Qualifier = Import(QTN->getQualifier()); 4368 if (!Qualifier) 4369 return TemplateName(); 4370 4371 if (TemplateDecl *ToTemplate 4372 = cast_or_null<TemplateDecl>(Import(From.getAsTemplateDecl()))) 4373 return ToContext.getQualifiedTemplateName(Qualifier, 4374 QTN->hasTemplateKeyword(), 4375 ToTemplate); 4376 4377 return TemplateName(); 4378 } 4379 4380 case TemplateName::DependentTemplate: { 4381 DependentTemplateName *DTN = From.getAsDependentTemplateName(); 4382 NestedNameSpecifier *Qualifier = Import(DTN->getQualifier()); 4383 if (!Qualifier) 4384 return TemplateName(); 4385 4386 if (DTN->isIdentifier()) { 4387 return ToContext.getDependentTemplateName(Qualifier, 4388 Import(DTN->getIdentifier())); 4389 } 4390 4391 return ToContext.getDependentTemplateName(Qualifier, DTN->getOperator()); 4392 } 4393 4394 case TemplateName::SubstTemplateTemplateParm: { 4395 SubstTemplateTemplateParmStorage *subst 4396 = From.getAsSubstTemplateTemplateParm(); 4397 TemplateTemplateParmDecl *param 4398 = cast_or_null<TemplateTemplateParmDecl>(Import(subst->getParameter())); 4399 if (!param) 4400 return TemplateName(); 4401 4402 TemplateName replacement = Import(subst->getReplacement()); 4403 if (replacement.isNull()) return TemplateName(); 4404 4405 return ToContext.getSubstTemplateTemplateParm(param, replacement); 4406 } 4407 4408 case TemplateName::SubstTemplateTemplateParmPack: { 4409 SubstTemplateTemplateParmPackStorage *SubstPack 4410 = From.getAsSubstTemplateTemplateParmPack(); 4411 TemplateTemplateParmDecl *Param 4412 = cast_or_null<TemplateTemplateParmDecl>( 4413 Import(SubstPack->getParameterPack())); 4414 if (!Param) 4415 return TemplateName(); 4416 4417 ASTNodeImporter Importer(*this); 4418 TemplateArgument ArgPack 4419 = Importer.ImportTemplateArgument(SubstPack->getArgumentPack()); 4420 if (ArgPack.isNull()) 4421 return TemplateName(); 4422 4423 return ToContext.getSubstTemplateTemplateParmPack(Param, ArgPack); 4424 } 4425 } 4426 4427 llvm_unreachable("Invalid template name kind"); 4428 } 4429 4430 SourceLocation ASTImporter::Import(SourceLocation FromLoc) { 4431 if (FromLoc.isInvalid()) 4432 return SourceLocation(); 4433 4434 SourceManager &FromSM = FromContext.getSourceManager(); 4435 4436 // For now, map everything down to its spelling location, so that we 4437 // don't have to import macro expansions. 4438 // FIXME: Import macro expansions! 4439 FromLoc = FromSM.getSpellingLoc(FromLoc); 4440 std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc); 4441 SourceManager &ToSM = ToContext.getSourceManager(); 4442 return ToSM.getLocForStartOfFile(Import(Decomposed.first)) 4443 .getLocWithOffset(Decomposed.second); 4444 } 4445 4446 SourceRange ASTImporter::Import(SourceRange FromRange) { 4447 return SourceRange(Import(FromRange.getBegin()), Import(FromRange.getEnd())); 4448 } 4449 4450 FileID ASTImporter::Import(FileID FromID) { 4451 llvm::DenseMap<FileID, FileID>::iterator Pos 4452 = ImportedFileIDs.find(FromID); 4453 if (Pos != ImportedFileIDs.end()) 4454 return Pos->second; 4455 4456 SourceManager &FromSM = FromContext.getSourceManager(); 4457 SourceManager &ToSM = ToContext.getSourceManager(); 4458 const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FromID); 4459 assert(FromSLoc.isFile() && "Cannot handle macro expansions yet"); 4460 4461 // Include location of this file. 4462 SourceLocation ToIncludeLoc = Import(FromSLoc.getFile().getIncludeLoc()); 4463 4464 // Map the FileID for to the "to" source manager. 4465 FileID ToID; 4466 const SrcMgr::ContentCache *Cache = FromSLoc.getFile().getContentCache(); 4467 if (Cache->OrigEntry) { 4468 // FIXME: We probably want to use getVirtualFile(), so we don't hit the 4469 // disk again 4470 // FIXME: We definitely want to re-use the existing MemoryBuffer, rather 4471 // than mmap the files several times. 4472 const FileEntry *Entry = ToFileManager.getFile(Cache->OrigEntry->getName()); 4473 ToID = ToSM.createFileID(Entry, ToIncludeLoc, 4474 FromSLoc.getFile().getFileCharacteristic()); 4475 } else { 4476 // FIXME: We want to re-use the existing MemoryBuffer! 4477 const llvm::MemoryBuffer * 4478 FromBuf = Cache->getBuffer(FromContext.getDiagnostics(), FromSM); 4479 llvm::MemoryBuffer *ToBuf 4480 = llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBuffer(), 4481 FromBuf->getBufferIdentifier()); 4482 ToID = ToSM.createFileIDForMemBuffer(ToBuf); 4483 } 4484 4485 4486 ImportedFileIDs[FromID] = ToID; 4487 return ToID; 4488 } 4489 4490 void ASTImporter::ImportDefinition(Decl *From) { 4491 Decl *To = Import(From); 4492 if (!To) 4493 return; 4494 4495 if (DeclContext *FromDC = cast<DeclContext>(From)) { 4496 ASTNodeImporter Importer(*this); 4497 4498 if (RecordDecl *ToRecord = dyn_cast<RecordDecl>(To)) { 4499 if (!ToRecord->getDefinition()) { 4500 Importer.ImportDefinition(cast<RecordDecl>(FromDC), ToRecord, 4501 ASTNodeImporter::IDK_Everything); 4502 return; 4503 } 4504 } 4505 4506 if (EnumDecl *ToEnum = dyn_cast<EnumDecl>(To)) { 4507 if (!ToEnum->getDefinition()) { 4508 Importer.ImportDefinition(cast<EnumDecl>(FromDC), ToEnum, 4509 ASTNodeImporter::IDK_Everything); 4510 return; 4511 } 4512 } 4513 4514 if (ObjCInterfaceDecl *ToIFace = dyn_cast<ObjCInterfaceDecl>(To)) { 4515 if (!ToIFace->getDefinition()) { 4516 Importer.ImportDefinition(cast<ObjCInterfaceDecl>(FromDC), ToIFace, 4517 ASTNodeImporter::IDK_Everything); 4518 return; 4519 } 4520 } 4521 4522 if (ObjCProtocolDecl *ToProto = dyn_cast<ObjCProtocolDecl>(To)) { 4523 if (!ToProto->getDefinition()) { 4524 Importer.ImportDefinition(cast<ObjCProtocolDecl>(FromDC), ToProto, 4525 ASTNodeImporter::IDK_Everything); 4526 return; 4527 } 4528 } 4529 4530 Importer.ImportDeclContext(FromDC, true); 4531 } 4532 } 4533 4534 DeclarationName ASTImporter::Import(DeclarationName FromName) { 4535 if (!FromName) 4536 return DeclarationName(); 4537 4538 switch (FromName.getNameKind()) { 4539 case DeclarationName::Identifier: 4540 return Import(FromName.getAsIdentifierInfo()); 4541 4542 case DeclarationName::ObjCZeroArgSelector: 4543 case DeclarationName::ObjCOneArgSelector: 4544 case DeclarationName::ObjCMultiArgSelector: 4545 return Import(FromName.getObjCSelector()); 4546 4547 case DeclarationName::CXXConstructorName: { 4548 QualType T = Import(FromName.getCXXNameType()); 4549 if (T.isNull()) 4550 return DeclarationName(); 4551 4552 return ToContext.DeclarationNames.getCXXConstructorName( 4553 ToContext.getCanonicalType(T)); 4554 } 4555 4556 case DeclarationName::CXXDestructorName: { 4557 QualType T = Import(FromName.getCXXNameType()); 4558 if (T.isNull()) 4559 return DeclarationName(); 4560 4561 return ToContext.DeclarationNames.getCXXDestructorName( 4562 ToContext.getCanonicalType(T)); 4563 } 4564 4565 case DeclarationName::CXXConversionFunctionName: { 4566 QualType T = Import(FromName.getCXXNameType()); 4567 if (T.isNull()) 4568 return DeclarationName(); 4569 4570 return ToContext.DeclarationNames.getCXXConversionFunctionName( 4571 ToContext.getCanonicalType(T)); 4572 } 4573 4574 case DeclarationName::CXXOperatorName: 4575 return ToContext.DeclarationNames.getCXXOperatorName( 4576 FromName.getCXXOverloadedOperator()); 4577 4578 case DeclarationName::CXXLiteralOperatorName: 4579 return ToContext.DeclarationNames.getCXXLiteralOperatorName( 4580 Import(FromName.getCXXLiteralIdentifier())); 4581 4582 case DeclarationName::CXXUsingDirective: 4583 // FIXME: STATICS! 4584 return DeclarationName::getUsingDirectiveName(); 4585 } 4586 4587 llvm_unreachable("Invalid DeclarationName Kind!"); 4588 } 4589 4590 IdentifierInfo *ASTImporter::Import(const IdentifierInfo *FromId) { 4591 if (!FromId) 4592 return 0; 4593 4594 return &ToContext.Idents.get(FromId->getName()); 4595 } 4596 4597 Selector ASTImporter::Import(Selector FromSel) { 4598 if (FromSel.isNull()) 4599 return Selector(); 4600 4601 SmallVector<IdentifierInfo *, 4> Idents; 4602 Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(0))); 4603 for (unsigned I = 1, N = FromSel.getNumArgs(); I < N; ++I) 4604 Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(I))); 4605 return ToContext.Selectors.getSelector(FromSel.getNumArgs(), Idents.data()); 4606 } 4607 4608 DeclarationName ASTImporter::HandleNameConflict(DeclarationName Name, 4609 DeclContext *DC, 4610 unsigned IDNS, 4611 NamedDecl **Decls, 4612 unsigned NumDecls) { 4613 return Name; 4614 } 4615 4616 DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) { 4617 return ToContext.getDiagnostics().Report(Loc, DiagID); 4618 } 4619 4620 DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) { 4621 return FromContext.getDiagnostics().Report(Loc, DiagID); 4622 } 4623 4624 void ASTImporter::CompleteDecl (Decl *D) { 4625 if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) { 4626 if (!ID->getDefinition()) 4627 ID->startDefinition(); 4628 } 4629 else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) { 4630 if (!PD->getDefinition()) 4631 PD->startDefinition(); 4632 } 4633 else if (TagDecl *TD = dyn_cast<TagDecl>(D)) { 4634 if (!TD->getDefinition() && !TD->isBeingDefined()) { 4635 TD->startDefinition(); 4636 TD->setCompleteDefinition(true); 4637 } 4638 } 4639 else { 4640 assert (0 && "CompleteDecl called on a Decl that can't be completed"); 4641 } 4642 } 4643 4644 Decl *ASTImporter::Imported(Decl *From, Decl *To) { 4645 ImportedDecls[From] = To; 4646 return To; 4647 } 4648 4649 bool ASTImporter::IsStructurallyEquivalent(QualType From, QualType To, 4650 bool Complain) { 4651 llvm::DenseMap<const Type *, const Type *>::iterator Pos 4652 = ImportedTypes.find(From.getTypePtr()); 4653 if (Pos != ImportedTypes.end() && ToContext.hasSameType(Import(From), To)) 4654 return true; 4655 4656 StructuralEquivalenceContext Ctx(FromContext, ToContext, NonEquivalentDecls, 4657 false, Complain); 4658 return Ctx.IsStructurallyEquivalent(From, To); 4659 } 4660
