1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 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 implements serialization for Declarations. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Serialization/ASTWriter.h" 15 #include "ASTCommon.h" 16 #include "clang/AST/DeclCXX.h" 17 #include "clang/AST/DeclContextInternals.h" 18 #include "clang/AST/DeclTemplate.h" 19 #include "clang/AST/DeclVisitor.h" 20 #include "clang/AST/Expr.h" 21 #include "clang/Basic/SourceManager.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "llvm/ADT/Twine.h" 24 #include "llvm/Bitcode/BitstreamWriter.h" 25 #include "llvm/Support/ErrorHandling.h" 26 using namespace clang; 27 using namespace serialization; 28 29 //===----------------------------------------------------------------------===// 30 // Declaration serialization 31 //===----------------------------------------------------------------------===// 32 33 namespace clang { 34 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 35 36 ASTWriter &Writer; 37 ASTContext &Context; 38 typedef ASTWriter::RecordData RecordData; 39 RecordData &Record; 40 41 public: 42 serialization::DeclCode Code; 43 unsigned AbbrevToUse; 44 45 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, RecordData &Record) 46 : Writer(Writer), Context(Context), Record(Record) { 47 } 48 49 void Visit(Decl *D); 50 51 void VisitDecl(Decl *D); 52 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 53 void VisitNamedDecl(NamedDecl *D); 54 void VisitLabelDecl(LabelDecl *LD); 55 void VisitNamespaceDecl(NamespaceDecl *D); 56 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 57 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 58 void VisitTypeDecl(TypeDecl *D); 59 void VisitTypedefNameDecl(TypedefNameDecl *D); 60 void VisitTypedefDecl(TypedefDecl *D); 61 void VisitTypeAliasDecl(TypeAliasDecl *D); 62 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 63 void VisitTagDecl(TagDecl *D); 64 void VisitEnumDecl(EnumDecl *D); 65 void VisitRecordDecl(RecordDecl *D); 66 void VisitCXXRecordDecl(CXXRecordDecl *D); 67 void VisitClassTemplateSpecializationDecl( 68 ClassTemplateSpecializationDecl *D); 69 void VisitClassTemplatePartialSpecializationDecl( 70 ClassTemplatePartialSpecializationDecl *D); 71 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D); 72 void VisitVarTemplatePartialSpecializationDecl( 73 VarTemplatePartialSpecializationDecl *D); 74 void VisitClassScopeFunctionSpecializationDecl( 75 ClassScopeFunctionSpecializationDecl *D); 76 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 77 void VisitValueDecl(ValueDecl *D); 78 void VisitEnumConstantDecl(EnumConstantDecl *D); 79 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 80 void VisitDeclaratorDecl(DeclaratorDecl *D); 81 void VisitFunctionDecl(FunctionDecl *D); 82 void VisitCXXMethodDecl(CXXMethodDecl *D); 83 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 84 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 85 void VisitCXXConversionDecl(CXXConversionDecl *D); 86 void VisitFieldDecl(FieldDecl *D); 87 void VisitMSPropertyDecl(MSPropertyDecl *D); 88 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 89 void VisitVarDecl(VarDecl *D); 90 void VisitImplicitParamDecl(ImplicitParamDecl *D); 91 void VisitParmVarDecl(ParmVarDecl *D); 92 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 93 void VisitTemplateDecl(TemplateDecl *D); 94 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 95 void VisitClassTemplateDecl(ClassTemplateDecl *D); 96 void VisitVarTemplateDecl(VarTemplateDecl *D); 97 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 98 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 99 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 100 void VisitUsingDecl(UsingDecl *D); 101 void VisitUsingShadowDecl(UsingShadowDecl *D); 102 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 103 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 104 void VisitImportDecl(ImportDecl *D); 105 void VisitAccessSpecDecl(AccessSpecDecl *D); 106 void VisitFriendDecl(FriendDecl *D); 107 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 108 void VisitStaticAssertDecl(StaticAssertDecl *D); 109 void VisitBlockDecl(BlockDecl *D); 110 void VisitCapturedDecl(CapturedDecl *D); 111 void VisitEmptyDecl(EmptyDecl *D); 112 113 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 114 uint64_t VisibleOffset); 115 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 116 117 118 // FIXME: Put in the same order is DeclNodes.td? 119 void VisitObjCMethodDecl(ObjCMethodDecl *D); 120 void VisitObjCContainerDecl(ObjCContainerDecl *D); 121 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 122 void VisitObjCIvarDecl(ObjCIvarDecl *D); 123 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 124 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 125 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 126 void VisitObjCImplDecl(ObjCImplDecl *D); 127 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 128 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 129 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 130 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 131 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 132 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D); 133 134 void AddFunctionDefinition(const FunctionDecl *FD) { 135 assert(FD->doesThisDeclarationHaveABody()); 136 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 137 Record.push_back(CD->NumCtorInitializers); 138 if (CD->NumCtorInitializers) 139 Writer.AddCXXCtorInitializersRef( 140 llvm::makeArrayRef(CD->init_begin(), CD->init_end()), Record); 141 } 142 Writer.AddStmt(FD->getBody()); 143 } 144 145 /// Get the specialization decl from an entry in the specialization list. 146 template <typename EntryType> 147 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType * 148 getSpecializationDecl(EntryType &T) { 149 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T); 150 } 151 152 /// Get the list of partial specializations from a template's common ptr. 153 template<typename T> 154 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) { 155 return Common->PartialSpecializations; 156 } 157 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) { 158 return None; 159 } 160 161 template<typename Decl> 162 void AddTemplateSpecializations(Decl *D) { 163 auto *Common = D->getCommonPtr(); 164 165 // If we have any lazy specializations, and the external AST source is 166 // our chained AST reader, we can just write out the DeclIDs. Otherwise, 167 // we need to resolve them to actual declarations. 168 if (Writer.Chain != Writer.Context->getExternalSource() && 169 Common->LazySpecializations) { 170 D->LoadLazySpecializations(); 171 assert(!Common->LazySpecializations); 172 } 173 174 auto &Specializations = Common->Specializations; 175 auto &&PartialSpecializations = getPartialSpecializations(Common); 176 ArrayRef<DeclID> LazySpecializations; 177 if (auto *LS = Common->LazySpecializations) 178 LazySpecializations = ArrayRef<DeclID>(LS + 1, LS + 1 + LS[0]); 179 180 Record.push_back(Specializations.size() + 181 PartialSpecializations.size() + 182 LazySpecializations.size()); 183 for (auto &Entry : Specializations) { 184 auto *D = getSpecializationDecl(Entry); 185 assert(D->isCanonicalDecl() && "non-canonical decl in set"); 186 Writer.AddDeclRef(D, Record); 187 } 188 for (auto &Entry : PartialSpecializations) { 189 auto *D = getSpecializationDecl(Entry); 190 assert(D->isCanonicalDecl() && "non-canonical decl in set"); 191 Writer.AddDeclRef(D, Record); 192 } 193 Record.append(LazySpecializations.begin(), LazySpecializations.end()); 194 } 195 }; 196 } 197 198 void ASTDeclWriter::Visit(Decl *D) { 199 DeclVisitor<ASTDeclWriter>::Visit(D); 200 201 // Source locations require array (variable-length) abbreviations. The 202 // abbreviation infrastructure requires that arrays are encoded last, so 203 // we handle it here in the case of those classes derived from DeclaratorDecl 204 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)){ 205 Writer.AddTypeSourceInfo(DD->getTypeSourceInfo(), Record); 206 } 207 208 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 209 // have been written. We want it last because we will not read it back when 210 // retrieving it from the AST, we'll just lazily set the offset. 211 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 212 Record.push_back(FD->doesThisDeclarationHaveABody()); 213 if (FD->doesThisDeclarationHaveABody()) 214 AddFunctionDefinition(FD); 215 } 216 } 217 218 void ASTDeclWriter::VisitDecl(Decl *D) { 219 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 220 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 221 Record.push_back(D->isInvalidDecl()); 222 Record.push_back(D->hasAttrs()); 223 if (D->hasAttrs()) 224 Writer.WriteAttributes(llvm::makeArrayRef(D->getAttrs().begin(), 225 D->getAttrs().size()), Record); 226 Record.push_back(D->isImplicit()); 227 Record.push_back(D->isUsed(false)); 228 Record.push_back(D->isReferenced()); 229 Record.push_back(D->isTopLevelDeclInObjCContainer()); 230 Record.push_back(D->getAccess()); 231 Record.push_back(D->isModulePrivate()); 232 Record.push_back(Writer.inferSubmoduleIDFromLocation(D->getLocation())); 233 234 // If this declaration injected a name into a context different from its 235 // lexical context, and that context is an imported namespace, we need to 236 // update its visible declarations to include this name. 237 // 238 // This happens when we instantiate a class with a friend declaration or a 239 // function with a local extern declaration, for instance. 240 if (D->isOutOfLine()) { 241 auto *DC = D->getDeclContext(); 242 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { 243 if (!NS->isFromASTFile()) 244 break; 245 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); 246 if (!NS->isInlineNamespace()) 247 break; 248 DC = NS->getParent(); 249 } 250 } 251 } 252 253 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 254 llvm_unreachable("Translation units aren't directly serialized"); 255 } 256 257 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 258 VisitDecl(D); 259 Writer.AddDeclarationName(D->getDeclName(), Record); 260 Record.push_back(needsAnonymousDeclarationNumber(D) 261 ? Writer.getAnonymousDeclarationNumber(D) 262 : 0); 263 } 264 265 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 266 VisitNamedDecl(D); 267 Writer.AddSourceLocation(D->getLocStart(), Record); 268 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 269 } 270 271 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 272 VisitRedeclarable(D); 273 VisitTypeDecl(D); 274 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 275 Record.push_back(D->isModed()); 276 if (D->isModed()) 277 Writer.AddTypeRef(D->getUnderlyingType(), Record); 278 } 279 280 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 281 VisitTypedefNameDecl(D); 282 if (!D->hasAttrs() && 283 !D->isImplicit() && 284 D->getFirstDecl() == D->getMostRecentDecl() && 285 !D->isInvalidDecl() && 286 !D->isTopLevelDeclInObjCContainer() && 287 !D->isModulePrivate() && 288 !needsAnonymousDeclarationNumber(D) && 289 D->getDeclName().getNameKind() == DeclarationName::Identifier) 290 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 291 292 Code = serialization::DECL_TYPEDEF; 293 } 294 295 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 296 VisitTypedefNameDecl(D); 297 Writer.AddDeclRef(D->getDescribedAliasTemplate(), Record); 298 Code = serialization::DECL_TYPEALIAS; 299 } 300 301 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 302 VisitRedeclarable(D); 303 VisitTypeDecl(D); 304 Record.push_back(D->getIdentifierNamespace()); 305 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 306 if (!isa<CXXRecordDecl>(D)) 307 Record.push_back(D->isCompleteDefinition()); 308 Record.push_back(D->isEmbeddedInDeclarator()); 309 Record.push_back(D->isFreeStanding()); 310 Record.push_back(D->isCompleteDefinitionRequired()); 311 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 312 313 if (D->hasExtInfo()) { 314 Record.push_back(1); 315 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 316 } else if (auto *TD = D->getTypedefNameForAnonDecl()) { 317 Record.push_back(2); 318 Writer.AddDeclRef(TD, Record); 319 Writer.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo(), Record); 320 } else if (auto *DD = D->getDeclaratorForAnonDecl()) { 321 Record.push_back(3); 322 Writer.AddDeclRef(DD, Record); 323 } else { 324 Record.push_back(0); 325 } 326 } 327 328 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 329 VisitTagDecl(D); 330 Writer.AddTypeSourceInfo(D->getIntegerTypeSourceInfo(), Record); 331 if (!D->getIntegerTypeSourceInfo()) 332 Writer.AddTypeRef(D->getIntegerType(), Record); 333 Writer.AddTypeRef(D->getPromotionType(), Record); 334 Record.push_back(D->getNumPositiveBits()); 335 Record.push_back(D->getNumNegativeBits()); 336 Record.push_back(D->isScoped()); 337 Record.push_back(D->isScopedUsingClassTag()); 338 Record.push_back(D->isFixed()); 339 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 340 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 341 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 342 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 343 } else { 344 Writer.AddDeclRef(nullptr, Record); 345 } 346 347 if (!D->hasAttrs() && 348 !D->isImplicit() && 349 !D->isUsed(false) && 350 !D->hasExtInfo() && 351 !D->getTypedefNameForAnonDecl() && 352 !D->getDeclaratorForAnonDecl() && 353 D->getFirstDecl() == D->getMostRecentDecl() && 354 !D->isInvalidDecl() && 355 !D->isReferenced() && 356 !D->isTopLevelDeclInObjCContainer() && 357 D->getAccess() == AS_none && 358 !D->isModulePrivate() && 359 !CXXRecordDecl::classofKind(D->getKind()) && 360 !D->getIntegerTypeSourceInfo() && 361 !D->getMemberSpecializationInfo() && 362 !needsAnonymousDeclarationNumber(D) && 363 D->getDeclName().getNameKind() == DeclarationName::Identifier) 364 AbbrevToUse = Writer.getDeclEnumAbbrev(); 365 366 Code = serialization::DECL_ENUM; 367 } 368 369 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 370 VisitTagDecl(D); 371 Record.push_back(D->hasFlexibleArrayMember()); 372 Record.push_back(D->isAnonymousStructOrUnion()); 373 Record.push_back(D->hasObjectMember()); 374 Record.push_back(D->hasVolatileMember()); 375 376 if (!D->hasAttrs() && 377 !D->isImplicit() && 378 !D->isUsed(false) && 379 !D->hasExtInfo() && 380 !D->getTypedefNameForAnonDecl() && 381 !D->getDeclaratorForAnonDecl() && 382 D->getFirstDecl() == D->getMostRecentDecl() && 383 !D->isInvalidDecl() && 384 !D->isReferenced() && 385 !D->isTopLevelDeclInObjCContainer() && 386 D->getAccess() == AS_none && 387 !D->isModulePrivate() && 388 !CXXRecordDecl::classofKind(D->getKind()) && 389 !needsAnonymousDeclarationNumber(D) && 390 D->getDeclName().getNameKind() == DeclarationName::Identifier) 391 AbbrevToUse = Writer.getDeclRecordAbbrev(); 392 393 Code = serialization::DECL_RECORD; 394 } 395 396 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 397 VisitNamedDecl(D); 398 Writer.AddTypeRef(D->getType(), Record); 399 } 400 401 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 402 VisitValueDecl(D); 403 Record.push_back(D->getInitExpr()? 1 : 0); 404 if (D->getInitExpr()) 405 Writer.AddStmt(D->getInitExpr()); 406 Writer.AddAPSInt(D->getInitVal(), Record); 407 408 Code = serialization::DECL_ENUM_CONSTANT; 409 } 410 411 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 412 VisitValueDecl(D); 413 Writer.AddSourceLocation(D->getInnerLocStart(), Record); 414 Record.push_back(D->hasExtInfo()); 415 if (D->hasExtInfo()) 416 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 417 } 418 419 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 420 VisitRedeclarable(D); 421 VisitDeclaratorDecl(D); 422 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 423 Record.push_back(D->getIdentifierNamespace()); 424 425 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 426 // after everything else is written. 427 428 Record.push_back((int)D->SClass); // FIXME: stable encoding 429 Record.push_back(D->IsInline); 430 Record.push_back(D->IsInlineSpecified); 431 Record.push_back(D->IsVirtualAsWritten); 432 Record.push_back(D->IsPure); 433 Record.push_back(D->HasInheritedPrototype); 434 Record.push_back(D->HasWrittenPrototype); 435 Record.push_back(D->IsDeleted); 436 Record.push_back(D->IsTrivial); 437 Record.push_back(D->IsDefaulted); 438 Record.push_back(D->IsExplicitlyDefaulted); 439 Record.push_back(D->HasImplicitReturnZero); 440 Record.push_back(D->IsConstexpr); 441 Record.push_back(D->HasSkippedBody); 442 Record.push_back(D->IsLateTemplateParsed); 443 Record.push_back(D->getLinkageInternal()); 444 Writer.AddSourceLocation(D->getLocEnd(), Record); 445 446 Record.push_back(D->getTemplatedKind()); 447 switch (D->getTemplatedKind()) { 448 case FunctionDecl::TK_NonTemplate: 449 break; 450 case FunctionDecl::TK_FunctionTemplate: 451 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); 452 break; 453 case FunctionDecl::TK_MemberSpecialization: { 454 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 455 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 456 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 457 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 458 break; 459 } 460 case FunctionDecl::TK_FunctionTemplateSpecialization: { 461 FunctionTemplateSpecializationInfo * 462 FTSInfo = D->getTemplateSpecializationInfo(); 463 Writer.AddDeclRef(FTSInfo->getTemplate(), Record); 464 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 465 466 // Template arguments. 467 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); 468 469 // Template args as written. 470 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 471 if (FTSInfo->TemplateArgumentsAsWritten) { 472 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 473 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 474 i!=e; ++i) 475 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], 476 Record); 477 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc, 478 Record); 479 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc, 480 Record); 481 } 482 483 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); 484 485 if (D->isCanonicalDecl()) { 486 // Write the template that contains the specializations set. We will 487 // add a FunctionTemplateSpecializationInfo to it when reading. 488 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); 489 } 490 break; 491 } 492 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 493 DependentFunctionTemplateSpecializationInfo * 494 DFTSInfo = D->getDependentSpecializationInfo(); 495 496 // Templates. 497 Record.push_back(DFTSInfo->getNumTemplates()); 498 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 499 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); 500 501 // Templates args. 502 Record.push_back(DFTSInfo->getNumTemplateArgs()); 503 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 504 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); 505 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); 506 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); 507 break; 508 } 509 } 510 511 Record.push_back(D->param_size()); 512 for (auto P : D->params()) 513 Writer.AddDeclRef(P, Record); 514 Code = serialization::DECL_FUNCTION; 515 } 516 517 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 518 VisitNamedDecl(D); 519 // FIXME: convert to LazyStmtPtr? 520 // Unlike C/C++, method bodies will never be in header files. 521 bool HasBodyStuff = D->getBody() != nullptr || 522 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; 523 Record.push_back(HasBodyStuff); 524 if (HasBodyStuff) { 525 Writer.AddStmt(D->getBody()); 526 Writer.AddDeclRef(D->getSelfDecl(), Record); 527 Writer.AddDeclRef(D->getCmdDecl(), Record); 528 } 529 Record.push_back(D->isInstanceMethod()); 530 Record.push_back(D->isVariadic()); 531 Record.push_back(D->isPropertyAccessor()); 532 Record.push_back(D->isDefined()); 533 Record.push_back(D->IsOverriding); 534 Record.push_back(D->HasSkippedBody); 535 536 Record.push_back(D->IsRedeclaration); 537 Record.push_back(D->HasRedeclaration); 538 if (D->HasRedeclaration) { 539 assert(Context.getObjCMethodRedeclaration(D)); 540 Writer.AddDeclRef(Context.getObjCMethodRedeclaration(D), Record); 541 } 542 543 // FIXME: stable encoding for @required/@optional 544 Record.push_back(D->getImplementationControl()); 545 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 546 Record.push_back(D->getObjCDeclQualifier()); 547 Record.push_back(D->hasRelatedResultType()); 548 Writer.AddTypeRef(D->getReturnType(), Record); 549 Writer.AddTypeSourceInfo(D->getReturnTypeSourceInfo(), Record); 550 Writer.AddSourceLocation(D->getLocEnd(), Record); 551 Record.push_back(D->param_size()); 552 for (const auto *P : D->params()) 553 Writer.AddDeclRef(P, Record); 554 555 Record.push_back(D->SelLocsKind); 556 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 557 SourceLocation *SelLocs = D->getStoredSelLocs(); 558 Record.push_back(NumStoredSelLocs); 559 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 560 Writer.AddSourceLocation(SelLocs[i], Record); 561 562 Code = serialization::DECL_OBJC_METHOD; 563 } 564 565 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 566 VisitNamedDecl(D); 567 Writer.AddSourceLocation(D->getAtStartLoc(), Record); 568 Writer.AddSourceRange(D->getAtEndRange(), Record); 569 // Abstract class (no need to define a stable serialization::DECL code). 570 } 571 572 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 573 VisitRedeclarable(D); 574 VisitObjCContainerDecl(D); 575 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 576 577 Record.push_back(D->isThisDeclarationADefinition()); 578 if (D->isThisDeclarationADefinition()) { 579 // Write the DefinitionData 580 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 581 582 Writer.AddDeclRef(D->getSuperClass(), Record); 583 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 584 Writer.AddSourceLocation(D->getEndOfDefinitionLoc(), Record); 585 Record.push_back(Data.HasDesignatedInitializers); 586 587 // Write out the protocols that are directly referenced by the @interface. 588 Record.push_back(Data.ReferencedProtocols.size()); 589 for (const auto *P : D->protocols()) 590 Writer.AddDeclRef(P, Record); 591 for (const auto &PL : D->protocol_locs()) 592 Writer.AddSourceLocation(PL, Record); 593 594 // Write out the protocols that are transitively referenced. 595 Record.push_back(Data.AllReferencedProtocols.size()); 596 for (ObjCList<ObjCProtocolDecl>::iterator 597 P = Data.AllReferencedProtocols.begin(), 598 PEnd = Data.AllReferencedProtocols.end(); 599 P != PEnd; ++P) 600 Writer.AddDeclRef(*P, Record); 601 602 603 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 604 // Ensure that we write out the set of categories for this class. 605 Writer.ObjCClassesWithCategories.insert(D); 606 607 // Make sure that the categories get serialized. 608 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 609 (void)Writer.GetDeclRef(Cat); 610 } 611 } 612 613 Code = serialization::DECL_OBJC_INTERFACE; 614 } 615 616 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 617 VisitFieldDecl(D); 618 // FIXME: stable encoding for @public/@private/@protected/@package 619 Record.push_back(D->getAccessControl()); 620 Record.push_back(D->getSynthesize()); 621 622 if (!D->hasAttrs() && 623 !D->isImplicit() && 624 !D->isUsed(false) && 625 !D->isInvalidDecl() && 626 !D->isReferenced() && 627 !D->isModulePrivate() && 628 !D->getBitWidth() && 629 !D->hasExtInfo() && 630 D->getDeclName()) 631 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 632 633 Code = serialization::DECL_OBJC_IVAR; 634 } 635 636 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 637 VisitRedeclarable(D); 638 VisitObjCContainerDecl(D); 639 640 Record.push_back(D->isThisDeclarationADefinition()); 641 if (D->isThisDeclarationADefinition()) { 642 Record.push_back(D->protocol_size()); 643 for (const auto *I : D->protocols()) 644 Writer.AddDeclRef(I, Record); 645 for (const auto &PL : D->protocol_locs()) 646 Writer.AddSourceLocation(PL, Record); 647 } 648 649 Code = serialization::DECL_OBJC_PROTOCOL; 650 } 651 652 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 653 VisitFieldDecl(D); 654 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 655 } 656 657 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 658 VisitObjCContainerDecl(D); 659 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 660 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record); 661 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record); 662 Writer.AddDeclRef(D->getClassInterface(), Record); 663 Record.push_back(D->protocol_size()); 664 for (const auto *I : D->protocols()) 665 Writer.AddDeclRef(I, Record); 666 for (const auto &PL : D->protocol_locs()) 667 Writer.AddSourceLocation(PL, Record); 668 Code = serialization::DECL_OBJC_CATEGORY; 669 } 670 671 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 672 VisitNamedDecl(D); 673 Writer.AddDeclRef(D->getClassInterface(), Record); 674 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 675 } 676 677 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 678 VisitNamedDecl(D); 679 Writer.AddSourceLocation(D->getAtLoc(), Record); 680 Writer.AddSourceLocation(D->getLParenLoc(), Record); 681 Writer.AddTypeRef(D->getType(), Record); 682 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 683 // FIXME: stable encoding 684 Record.push_back((unsigned)D->getPropertyAttributes()); 685 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 686 // FIXME: stable encoding 687 Record.push_back((unsigned)D->getPropertyImplementation()); 688 Writer.AddDeclarationName(D->getGetterName(), Record); 689 Writer.AddDeclarationName(D->getSetterName(), Record); 690 Writer.AddDeclRef(D->getGetterMethodDecl(), Record); 691 Writer.AddDeclRef(D->getSetterMethodDecl(), Record); 692 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 693 Code = serialization::DECL_OBJC_PROPERTY; 694 } 695 696 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 697 VisitObjCContainerDecl(D); 698 Writer.AddDeclRef(D->getClassInterface(), Record); 699 // Abstract class (no need to define a stable serialization::DECL code). 700 } 701 702 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 703 VisitObjCImplDecl(D); 704 Writer.AddIdentifierRef(D->getIdentifier(), Record); 705 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 706 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 707 } 708 709 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 710 VisitObjCImplDecl(D); 711 Writer.AddDeclRef(D->getSuperClass(), Record); 712 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 713 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record); 714 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record); 715 Record.push_back(D->hasNonZeroConstructors()); 716 Record.push_back(D->hasDestructors()); 717 Record.push_back(D->NumIvarInitializers); 718 if (D->NumIvarInitializers) 719 Writer.AddCXXCtorInitializersRef( 720 llvm::makeArrayRef(D->init_begin(), D->init_end()), Record); 721 Code = serialization::DECL_OBJC_IMPLEMENTATION; 722 } 723 724 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 725 VisitDecl(D); 726 Writer.AddSourceLocation(D->getLocStart(), Record); 727 Writer.AddDeclRef(D->getPropertyDecl(), Record); 728 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 729 Writer.AddSourceLocation(D->getPropertyIvarDeclLoc(), Record); 730 Writer.AddStmt(D->getGetterCXXConstructor()); 731 Writer.AddStmt(D->getSetterCXXAssignment()); 732 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 733 } 734 735 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 736 VisitDeclaratorDecl(D); 737 Record.push_back(D->isMutable()); 738 if (D->InitStorage.getInt() == FieldDecl::ISK_BitWidthOrNothing && 739 D->InitStorage.getPointer() == nullptr) { 740 Record.push_back(0); 741 } else if (D->InitStorage.getInt() == FieldDecl::ISK_CapturedVLAType) { 742 Record.push_back(D->InitStorage.getInt() + 1); 743 Writer.AddTypeRef( 744 QualType(static_cast<Type *>(D->InitStorage.getPointer()), 0), 745 Record); 746 } else { 747 Record.push_back(D->InitStorage.getInt() + 1); 748 Writer.AddStmt(static_cast<Expr *>(D->InitStorage.getPointer())); 749 } 750 if (!D->getDeclName()) 751 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); 752 753 if (!D->hasAttrs() && 754 !D->isImplicit() && 755 !D->isUsed(false) && 756 !D->isInvalidDecl() && 757 !D->isReferenced() && 758 !D->isTopLevelDeclInObjCContainer() && 759 !D->isModulePrivate() && 760 !D->getBitWidth() && 761 !D->hasInClassInitializer() && 762 !D->hasExtInfo() && 763 !ObjCIvarDecl::classofKind(D->getKind()) && 764 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 765 D->getDeclName()) 766 AbbrevToUse = Writer.getDeclFieldAbbrev(); 767 768 Code = serialization::DECL_FIELD; 769 } 770 771 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 772 VisitDeclaratorDecl(D); 773 Writer.AddIdentifierRef(D->getGetterId(), Record); 774 Writer.AddIdentifierRef(D->getSetterId(), Record); 775 Code = serialization::DECL_MS_PROPERTY; 776 } 777 778 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 779 VisitValueDecl(D); 780 Record.push_back(D->getChainingSize()); 781 782 for (const auto *P : D->chain()) 783 Writer.AddDeclRef(P, Record); 784 Code = serialization::DECL_INDIRECTFIELD; 785 } 786 787 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 788 VisitRedeclarable(D); 789 VisitDeclaratorDecl(D); 790 Record.push_back(D->getStorageClass()); 791 Record.push_back(D->getTSCSpec()); 792 Record.push_back(D->getInitStyle()); 793 if (!isa<ParmVarDecl>(D)) { 794 Record.push_back(D->isExceptionVariable()); 795 Record.push_back(D->isNRVOVariable()); 796 Record.push_back(D->isCXXForRangeDecl()); 797 Record.push_back(D->isARCPseudoStrong()); 798 Record.push_back(D->isConstexpr()); 799 Record.push_back(D->isInitCapture()); 800 Record.push_back(D->isPreviousDeclInSameBlockScope()); 801 } 802 Record.push_back(D->getLinkageInternal()); 803 804 if (D->getInit()) { 805 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); 806 Writer.AddStmt(D->getInit()); 807 } else { 808 Record.push_back(0); 809 } 810 811 enum { 812 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 813 }; 814 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 815 Record.push_back(VarTemplate); 816 Writer.AddDeclRef(TemplD, Record); 817 } else if (MemberSpecializationInfo *SpecInfo 818 = D->getMemberSpecializationInfo()) { 819 Record.push_back(StaticDataMemberSpecialization); 820 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); 821 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 822 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); 823 } else { 824 Record.push_back(VarNotTemplate); 825 } 826 827 if (!D->hasAttrs() && 828 !D->isImplicit() && 829 !D->isUsed(false) && 830 !D->isInvalidDecl() && 831 !D->isReferenced() && 832 !D->isTopLevelDeclInObjCContainer() && 833 D->getAccess() == AS_none && 834 !D->isModulePrivate() && 835 !needsAnonymousDeclarationNumber(D) && 836 D->getDeclName().getNameKind() == DeclarationName::Identifier && 837 !D->hasExtInfo() && 838 D->getFirstDecl() == D->getMostRecentDecl() && 839 D->getInitStyle() == VarDecl::CInit && 840 D->getInit() == nullptr && 841 !isa<ParmVarDecl>(D) && 842 !isa<VarTemplateSpecializationDecl>(D) && 843 !D->isConstexpr() && 844 !D->isInitCapture() && 845 !D->isPreviousDeclInSameBlockScope() && 846 !D->getMemberSpecializationInfo()) 847 AbbrevToUse = Writer.getDeclVarAbbrev(); 848 849 Code = serialization::DECL_VAR; 850 } 851 852 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 853 VisitVarDecl(D); 854 Code = serialization::DECL_IMPLICIT_PARAM; 855 } 856 857 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 858 VisitVarDecl(D); 859 Record.push_back(D->isObjCMethodParameter()); 860 Record.push_back(D->getFunctionScopeDepth()); 861 Record.push_back(D->getFunctionScopeIndex()); 862 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 863 Record.push_back(D->isKNRPromoted()); 864 Record.push_back(D->hasInheritedDefaultArg()); 865 Record.push_back(D->hasUninstantiatedDefaultArg()); 866 if (D->hasUninstantiatedDefaultArg()) 867 Writer.AddStmt(D->getUninstantiatedDefaultArg()); 868 Code = serialization::DECL_PARM_VAR; 869 870 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 871 872 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 873 // we dynamically check for the properties that we optimize for, but don't 874 // know are true of all PARM_VAR_DECLs. 875 if (!D->hasAttrs() && 876 !D->hasExtInfo() && 877 !D->isImplicit() && 878 !D->isUsed(false) && 879 !D->isInvalidDecl() && 880 !D->isReferenced() && 881 D->getAccess() == AS_none && 882 !D->isModulePrivate() && 883 D->getStorageClass() == 0 && 884 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 885 D->getFunctionScopeDepth() == 0 && 886 D->getObjCDeclQualifier() == 0 && 887 !D->isKNRPromoted() && 888 !D->hasInheritedDefaultArg() && 889 D->getInit() == nullptr && 890 !D->hasUninstantiatedDefaultArg()) // No default expr. 891 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 892 893 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 894 // just us assuming it. 895 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 896 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 897 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 898 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 899 assert(!D->isStaticDataMember() && 900 "PARM_VAR_DECL can't be static data member"); 901 } 902 903 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 904 VisitDecl(D); 905 Writer.AddStmt(D->getAsmString()); 906 Writer.AddSourceLocation(D->getRParenLoc(), Record); 907 Code = serialization::DECL_FILE_SCOPE_ASM; 908 } 909 910 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 911 VisitDecl(D); 912 Code = serialization::DECL_EMPTY; 913 } 914 915 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 916 VisitDecl(D); 917 Writer.AddStmt(D->getBody()); 918 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); 919 Record.push_back(D->param_size()); 920 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 921 P != PEnd; ++P) 922 Writer.AddDeclRef(*P, Record); 923 Record.push_back(D->isVariadic()); 924 Record.push_back(D->blockMissingReturnType()); 925 Record.push_back(D->isConversionFromLambda()); 926 Record.push_back(D->capturesCXXThis()); 927 Record.push_back(D->getNumCaptures()); 928 for (const auto &capture : D->captures()) { 929 Writer.AddDeclRef(capture.getVariable(), Record); 930 931 unsigned flags = 0; 932 if (capture.isByRef()) flags |= 1; 933 if (capture.isNested()) flags |= 2; 934 if (capture.hasCopyExpr()) flags |= 4; 935 Record.push_back(flags); 936 937 if (capture.hasCopyExpr()) Writer.AddStmt(capture.getCopyExpr()); 938 } 939 940 Code = serialization::DECL_BLOCK; 941 } 942 943 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 944 Record.push_back(CD->getNumParams()); 945 VisitDecl(CD); 946 Record.push_back(CD->getContextParamPosition()); 947 Record.push_back(CD->isNothrow() ? 1 : 0); 948 // Body is stored by VisitCapturedStmt. 949 for (unsigned I = 0; I < CD->getNumParams(); ++I) 950 Writer.AddDeclRef(CD->getParam(I), Record); 951 Code = serialization::DECL_CAPTURED; 952 } 953 954 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 955 VisitDecl(D); 956 Record.push_back(D->getLanguage()); 957 Writer.AddSourceLocation(D->getExternLoc(), Record); 958 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 959 Code = serialization::DECL_LINKAGE_SPEC; 960 } 961 962 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 963 VisitNamedDecl(D); 964 Writer.AddSourceLocation(D->getLocStart(), Record); 965 Code = serialization::DECL_LABEL; 966 } 967 968 969 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 970 VisitRedeclarable(D); 971 VisitNamedDecl(D); 972 Record.push_back(D->isInline()); 973 Writer.AddSourceLocation(D->getLocStart(), Record); 974 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 975 976 if (D->isOriginalNamespace()) 977 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 978 Code = serialization::DECL_NAMESPACE; 979 980 if (Writer.hasChain() && !D->isOriginalNamespace() && 981 D->getOriginalNamespace()->isFromASTFile()) { 982 NamespaceDecl *NS = D->getOriginalNamespace(); 983 Writer.UpdatedDeclContexts.insert(NS); 984 985 // Make sure all visible decls are written. They will be recorded later. We 986 // do this using a side data structure so we can sort the names into 987 // a deterministic order. 988 StoredDeclsMap *Map = NS->buildLookup(); 989 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16> 990 LookupResults; 991 LookupResults.reserve(Map->size()); 992 for (auto &Entry : *Map) 993 LookupResults.push_back( 994 std::make_pair(Entry.first, Entry.second.getLookupResult())); 995 996 std::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first()); 997 for (auto &NameAndResult : LookupResults) { 998 DeclarationName Name = NameAndResult.first; 999 DeclContext::lookup_result Result = NameAndResult.second; 1000 if (Name.getNameKind() == DeclarationName::CXXConstructorName || 1001 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { 1002 // We have to work around a name lookup bug here where negative lookup 1003 // results for these names get cached in namespace lookup tables. 1004 assert(Result.empty() && "Cannot have a constructor or conversion " 1005 "function name in a namespace!"); 1006 continue; 1007 } 1008 1009 for (NamedDecl *ND : Result) 1010 Writer.GetDeclRef(ND); 1011 } 1012 } 1013 1014 if (Writer.hasChain() && D->isAnonymousNamespace() && 1015 D == D->getMostRecentDecl()) { 1016 // This is a most recent reopening of the anonymous namespace. If its parent 1017 // is in a previous PCH (or is the TU), mark that parent for update, because 1018 // the original namespace always points to the latest re-opening of its 1019 // anonymous namespace. 1020 Decl *Parent = cast<Decl>( 1021 D->getParent()->getRedeclContext()->getPrimaryContext()); 1022 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1023 Writer.DeclUpdates[Parent].push_back( 1024 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1025 } 1026 } 1027 } 1028 1029 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1030 VisitRedeclarable(D); 1031 VisitNamedDecl(D); 1032 Writer.AddSourceLocation(D->getNamespaceLoc(), Record); 1033 Writer.AddSourceLocation(D->getTargetNameLoc(), Record); 1034 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 1035 Writer.AddDeclRef(D->getNamespace(), Record); 1036 Code = serialization::DECL_NAMESPACE_ALIAS; 1037 } 1038 1039 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1040 VisitNamedDecl(D); 1041 Writer.AddSourceLocation(D->getUsingLoc(), Record); 1042 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 1043 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 1044 Writer.AddDeclRef(D->FirstUsingShadow.getPointer(), Record); 1045 Record.push_back(D->hasTypename()); 1046 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); 1047 Code = serialization::DECL_USING; 1048 } 1049 1050 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1051 VisitRedeclarable(D); 1052 VisitNamedDecl(D); 1053 Writer.AddDeclRef(D->getTargetDecl(), Record); 1054 Writer.AddDeclRef(D->UsingOrNextShadow, Record); 1055 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); 1056 Code = serialization::DECL_USING_SHADOW; 1057 } 1058 1059 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1060 VisitNamedDecl(D); 1061 Writer.AddSourceLocation(D->getUsingLoc(), Record); 1062 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); 1063 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 1064 Writer.AddDeclRef(D->getNominatedNamespace(), Record); 1065 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); 1066 Code = serialization::DECL_USING_DIRECTIVE; 1067 } 1068 1069 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1070 VisitValueDecl(D); 1071 Writer.AddSourceLocation(D->getUsingLoc(), Record); 1072 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 1073 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 1074 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1075 } 1076 1077 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1078 UnresolvedUsingTypenameDecl *D) { 1079 VisitTypeDecl(D); 1080 Writer.AddSourceLocation(D->getTypenameLoc(), Record); 1081 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 1082 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1083 } 1084 1085 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1086 VisitRecordDecl(D); 1087 1088 enum { 1089 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 1090 }; 1091 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1092 Record.push_back(CXXRecTemplate); 1093 Writer.AddDeclRef(TemplD, Record); 1094 } else if (MemberSpecializationInfo *MSInfo 1095 = D->getMemberSpecializationInfo()) { 1096 Record.push_back(CXXRecMemberSpecialization); 1097 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); 1098 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1099 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); 1100 } else { 1101 Record.push_back(CXXRecNotTemplate); 1102 } 1103 1104 Record.push_back(D->isThisDeclarationADefinition()); 1105 if (D->isThisDeclarationADefinition()) 1106 Writer.AddCXXDefinitionData(D, Record); 1107 1108 // Store (what we currently believe to be) the key function to avoid 1109 // deserializing every method so we can compute it. 1110 if (D->IsCompleteDefinition) 1111 Writer.AddDeclRef(Context.getCurrentKeyFunction(D), Record); 1112 1113 Code = serialization::DECL_CXX_RECORD; 1114 } 1115 1116 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1117 VisitFunctionDecl(D); 1118 if (D->isCanonicalDecl()) { 1119 Record.push_back(D->size_overridden_methods()); 1120 for (CXXMethodDecl::method_iterator 1121 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 1122 I != E; ++I) 1123 Writer.AddDeclRef(*I, Record); 1124 } else { 1125 // We only need to record overridden methods once for the canonical decl. 1126 Record.push_back(0); 1127 } 1128 1129 if (D->getFirstDecl() == D->getMostRecentDecl() && 1130 !D->isInvalidDecl() && 1131 !D->hasAttrs() && 1132 !D->isTopLevelDeclInObjCContainer() && 1133 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1134 !D->hasExtInfo() && 1135 !D->hasInheritedPrototype() && 1136 D->hasWrittenPrototype()) 1137 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); 1138 1139 Code = serialization::DECL_CXX_METHOD; 1140 } 1141 1142 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1143 VisitCXXMethodDecl(D); 1144 1145 Writer.AddDeclRef(D->getInheritedConstructor(), Record); 1146 Record.push_back(D->IsExplicitSpecified); 1147 1148 Code = serialization::DECL_CXX_CONSTRUCTOR; 1149 } 1150 1151 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1152 VisitCXXMethodDecl(D); 1153 1154 Writer.AddDeclRef(D->getOperatorDelete(), Record); 1155 1156 Code = serialization::DECL_CXX_DESTRUCTOR; 1157 } 1158 1159 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1160 VisitCXXMethodDecl(D); 1161 Record.push_back(D->IsExplicitSpecified); 1162 Code = serialization::DECL_CXX_CONVERSION; 1163 } 1164 1165 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1166 VisitDecl(D); 1167 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1168 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1169 Record.push_back(!IdentifierLocs.empty()); 1170 if (IdentifierLocs.empty()) { 1171 Writer.AddSourceLocation(D->getLocEnd(), Record); 1172 Record.push_back(1); 1173 } else { 1174 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1175 Writer.AddSourceLocation(IdentifierLocs[I], Record); 1176 Record.push_back(IdentifierLocs.size()); 1177 } 1178 // Note: the number of source locations must always be the last element in 1179 // the record. 1180 Code = serialization::DECL_IMPORT; 1181 } 1182 1183 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1184 VisitDecl(D); 1185 Writer.AddSourceLocation(D->getColonLoc(), Record); 1186 Code = serialization::DECL_ACCESS_SPEC; 1187 } 1188 1189 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1190 // Record the number of friend type template parameter lists here 1191 // so as to simplify memory allocation during deserialization. 1192 Record.push_back(D->NumTPLists); 1193 VisitDecl(D); 1194 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1195 Record.push_back(hasFriendDecl); 1196 if (hasFriendDecl) 1197 Writer.AddDeclRef(D->getFriendDecl(), Record); 1198 else 1199 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 1200 for (unsigned i = 0; i < D->NumTPLists; ++i) 1201 Writer.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i), 1202 Record); 1203 Writer.AddDeclRef(D->getNextFriend(), Record); 1204 Record.push_back(D->UnsupportedFriend); 1205 Writer.AddSourceLocation(D->FriendLoc, Record); 1206 Code = serialization::DECL_FRIEND; 1207 } 1208 1209 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1210 VisitDecl(D); 1211 Record.push_back(D->getNumTemplateParameters()); 1212 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1213 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record); 1214 Record.push_back(D->getFriendDecl() != nullptr); 1215 if (D->getFriendDecl()) 1216 Writer.AddDeclRef(D->getFriendDecl(), Record); 1217 else 1218 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 1219 Writer.AddSourceLocation(D->getFriendLoc(), Record); 1220 Code = serialization::DECL_FRIEND_TEMPLATE; 1221 } 1222 1223 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1224 VisitNamedDecl(D); 1225 1226 Writer.AddDeclRef(D->getTemplatedDecl(), Record); 1227 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1228 } 1229 1230 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1231 VisitRedeclarable(D); 1232 1233 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1234 // getCommonPtr() can be used while this is still initializing. 1235 if (D->isFirstDecl()) { 1236 // This declaration owns the 'common' pointer, so serialize that data now. 1237 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); 1238 if (D->getInstantiatedFromMemberTemplate()) 1239 Record.push_back(D->isMemberSpecialization()); 1240 } 1241 1242 VisitTemplateDecl(D); 1243 Record.push_back(D->getIdentifierNamespace()); 1244 } 1245 1246 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1247 VisitRedeclarableTemplateDecl(D); 1248 1249 if (D->isFirstDecl()) 1250 AddTemplateSpecializations(D); 1251 Code = serialization::DECL_CLASS_TEMPLATE; 1252 } 1253 1254 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1255 ClassTemplateSpecializationDecl *D) { 1256 VisitCXXRecordDecl(D); 1257 1258 llvm::PointerUnion<ClassTemplateDecl *, 1259 ClassTemplatePartialSpecializationDecl *> InstFrom 1260 = D->getSpecializedTemplateOrPartial(); 1261 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1262 Writer.AddDeclRef(InstFromD, Record); 1263 } else { 1264 Writer.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>(), 1265 Record); 1266 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 1267 } 1268 1269 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 1270 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 1271 Record.push_back(D->getSpecializationKind()); 1272 Record.push_back(D->isCanonicalDecl()); 1273 1274 if (D->isCanonicalDecl()) { 1275 // When reading, we'll add it to the folding set of the following template. 1276 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 1277 } 1278 1279 // Explicit info. 1280 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 1281 if (D->getTypeAsWritten()) { 1282 Writer.AddSourceLocation(D->getExternLoc(), Record); 1283 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 1284 } 1285 1286 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1287 } 1288 1289 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1290 ClassTemplatePartialSpecializationDecl *D) { 1291 VisitClassTemplateSpecializationDecl(D); 1292 1293 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1294 Writer.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten(), Record); 1295 1296 // These are read/set from/to the first declaration. 1297 if (D->getPreviousDecl() == nullptr) { 1298 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 1299 Record.push_back(D->isMemberSpecialization()); 1300 } 1301 1302 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1303 } 1304 1305 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1306 VisitRedeclarableTemplateDecl(D); 1307 1308 if (D->isFirstDecl()) 1309 AddTemplateSpecializations(D); 1310 Code = serialization::DECL_VAR_TEMPLATE; 1311 } 1312 1313 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1314 VarTemplateSpecializationDecl *D) { 1315 VisitVarDecl(D); 1316 1317 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1318 InstFrom = D->getSpecializedTemplateOrPartial(); 1319 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1320 Writer.AddDeclRef(InstFromD, Record); 1321 } else { 1322 Writer.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>(), 1323 Record); 1324 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 1325 } 1326 1327 // Explicit info. 1328 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 1329 if (D->getTypeAsWritten()) { 1330 Writer.AddSourceLocation(D->getExternLoc(), Record); 1331 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 1332 } 1333 1334 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 1335 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 1336 Record.push_back(D->getSpecializationKind()); 1337 Record.push_back(D->isCanonicalDecl()); 1338 1339 if (D->isCanonicalDecl()) { 1340 // When reading, we'll add it to the folding set of the following template. 1341 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 1342 } 1343 1344 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1345 } 1346 1347 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1348 VarTemplatePartialSpecializationDecl *D) { 1349 VisitVarTemplateSpecializationDecl(D); 1350 1351 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1352 Writer.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten(), Record); 1353 1354 // These are read/set from/to the first declaration. 1355 if (D->getPreviousDecl() == nullptr) { 1356 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 1357 Record.push_back(D->isMemberSpecialization()); 1358 } 1359 1360 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1361 } 1362 1363 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1364 ClassScopeFunctionSpecializationDecl *D) { 1365 VisitDecl(D); 1366 Writer.AddDeclRef(D->getSpecialization(), Record); 1367 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1368 } 1369 1370 1371 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1372 VisitRedeclarableTemplateDecl(D); 1373 1374 if (D->isFirstDecl()) 1375 AddTemplateSpecializations(D); 1376 Code = serialization::DECL_FUNCTION_TEMPLATE; 1377 } 1378 1379 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1380 VisitTypeDecl(D); 1381 1382 Record.push_back(D->wasDeclaredWithTypename()); 1383 1384 bool OwnsDefaultArg = D->hasDefaultArgument() && 1385 !D->defaultArgumentWasInherited(); 1386 Record.push_back(OwnsDefaultArg); 1387 if (OwnsDefaultArg) 1388 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 1389 1390 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1391 } 1392 1393 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1394 // For an expanded parameter pack, record the number of expansion types here 1395 // so that it's easier for deserialization to allocate the right amount of 1396 // memory. 1397 if (D->isExpandedParameterPack()) 1398 Record.push_back(D->getNumExpansionTypes()); 1399 1400 VisitDeclaratorDecl(D); 1401 // TemplateParmPosition. 1402 Record.push_back(D->getDepth()); 1403 Record.push_back(D->getPosition()); 1404 1405 if (D->isExpandedParameterPack()) { 1406 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1407 Writer.AddTypeRef(D->getExpansionType(I), Record); 1408 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record); 1409 } 1410 1411 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1412 } else { 1413 // Rest of NonTypeTemplateParmDecl. 1414 Record.push_back(D->isParameterPack()); 1415 bool OwnsDefaultArg = D->hasDefaultArgument() && 1416 !D->defaultArgumentWasInherited(); 1417 Record.push_back(OwnsDefaultArg); 1418 if (OwnsDefaultArg) 1419 Writer.AddStmt(D->getDefaultArgument()); 1420 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1421 } 1422 } 1423 1424 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1425 // For an expanded parameter pack, record the number of expansion types here 1426 // so that it's easier for deserialization to allocate the right amount of 1427 // memory. 1428 if (D->isExpandedParameterPack()) 1429 Record.push_back(D->getNumExpansionTemplateParameters()); 1430 1431 VisitTemplateDecl(D); 1432 // TemplateParmPosition. 1433 Record.push_back(D->getDepth()); 1434 Record.push_back(D->getPosition()); 1435 1436 if (D->isExpandedParameterPack()) { 1437 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1438 I != N; ++I) 1439 Writer.AddTemplateParameterList(D->getExpansionTemplateParameters(I), 1440 Record); 1441 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1442 } else { 1443 // Rest of TemplateTemplateParmDecl. 1444 Record.push_back(D->isParameterPack()); 1445 bool OwnsDefaultArg = D->hasDefaultArgument() && 1446 !D->defaultArgumentWasInherited(); 1447 Record.push_back(OwnsDefaultArg); 1448 if (OwnsDefaultArg) 1449 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1450 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1451 } 1452 } 1453 1454 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1455 VisitRedeclarableTemplateDecl(D); 1456 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1457 } 1458 1459 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1460 VisitDecl(D); 1461 Writer.AddStmt(D->getAssertExpr()); 1462 Record.push_back(D->isFailed()); 1463 Writer.AddStmt(D->getMessage()); 1464 Writer.AddSourceLocation(D->getRParenLoc(), Record); 1465 Code = serialization::DECL_STATIC_ASSERT; 1466 } 1467 1468 /// \brief Emit the DeclContext part of a declaration context decl. 1469 /// 1470 /// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1471 /// block for this declaration context is stored. May be 0 to indicate 1472 /// that there are no declarations stored within this context. 1473 /// 1474 /// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1475 /// block for this declaration context is stored. May be 0 to indicate 1476 /// that there are no declarations visible from this context. Note 1477 /// that this value will not be emitted for non-primary declaration 1478 /// contexts. 1479 void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1480 uint64_t VisibleOffset) { 1481 Record.push_back(LexicalOffset); 1482 Record.push_back(VisibleOffset); 1483 } 1484 1485 template <typename T> 1486 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1487 T *First = D->getFirstDecl(); 1488 T *MostRecent = First->getMostRecentDecl(); 1489 if (MostRecent != First) { 1490 assert(isRedeclarableDeclKind(static_cast<T *>(D)->getKind()) && 1491 "Not considered redeclarable?"); 1492 1493 // There is more than one declaration of this entity, so we will need to 1494 // write a redeclaration chain. 1495 Writer.AddDeclRef(First, Record); 1496 Writer.Redeclarations.insert(First); 1497 1498 auto *Previous = D->getPreviousDecl(); 1499 1500 // In a modules build, we can have imported declarations after a local 1501 // canonical declaration. If this is the first local declaration, emit 1502 // a list of all such imported declarations so that we can ensure they 1503 // are loaded before we are. This allows us to rebuild the redecl chain 1504 // in the right order on reload (all declarations imported by a module 1505 // should be before all declarations provided by that module). 1506 bool EmitImportedMergedCanonicalDecls = false; 1507 if (Context.getLangOpts().Modules && Writer.Chain) { 1508 auto *PreviousLocal = Previous; 1509 while (PreviousLocal && PreviousLocal->isFromASTFile()) 1510 PreviousLocal = PreviousLocal->getPreviousDecl(); 1511 if (!PreviousLocal) 1512 EmitImportedMergedCanonicalDecls = true; 1513 } 1514 if (EmitImportedMergedCanonicalDecls) { 1515 llvm::SmallMapVector<ModuleFile*, Decl*, 16> FirstInModule; 1516 for (auto *Redecl = MostRecent; Redecl; 1517 Redecl = Redecl->getPreviousDecl()) 1518 if (Redecl->isFromASTFile()) 1519 FirstInModule[Writer.Chain->getOwningModuleFile(Redecl)] = Redecl; 1520 // FIXME: If FirstInModule has entries for modules A and B, and B imports 1521 // A (directly or indirectly), we don't need to write the entry for A. 1522 Record.push_back(FirstInModule.size()); 1523 for (auto I = FirstInModule.rbegin(), E = FirstInModule.rend(); 1524 I != E; ++I) 1525 Writer.AddDeclRef(I->second, Record); 1526 } else 1527 Record.push_back(0); 1528 1529 // Make sure that we serialize both the previous and the most-recent 1530 // declarations, which (transitively) ensures that all declarations in the 1531 // chain get serialized. 1532 // 1533 // FIXME: This is not correct; when we reach an imported declaration we 1534 // won't emit its previous declaration. 1535 (void)Writer.GetDeclRef(Previous); 1536 (void)Writer.GetDeclRef(MostRecent); 1537 } else { 1538 // We use the sentinel value 0 to indicate an only declaration. 1539 Record.push_back(0); 1540 } 1541 } 1542 1543 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1544 Record.push_back(D->varlist_size()); 1545 VisitDecl(D); 1546 for (auto *I : D->varlists()) 1547 Writer.AddStmt(I); 1548 Code = serialization::DECL_OMP_THREADPRIVATE; 1549 } 1550 1551 //===----------------------------------------------------------------------===// 1552 // ASTWriter Implementation 1553 //===----------------------------------------------------------------------===// 1554 1555 void ASTWriter::WriteDeclAbbrevs() { 1556 using namespace llvm; 1557 1558 BitCodeAbbrev *Abv; 1559 1560 // Abbreviation for DECL_FIELD 1561 Abv = new BitCodeAbbrev(); 1562 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1563 // Decl 1564 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1565 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1566 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1567 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1568 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1569 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1570 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1571 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1572 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1573 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1574 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1575 // NamedDecl 1576 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1577 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1578 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1579 // ValueDecl 1580 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1581 // DeclaratorDecl 1582 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1583 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1584 // FieldDecl 1585 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1586 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1587 // Type Source Info 1588 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1589 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1590 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1591 DeclFieldAbbrev = Stream.EmitAbbrev(Abv); 1592 1593 // Abbreviation for DECL_OBJC_IVAR 1594 Abv = new BitCodeAbbrev(); 1595 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1596 // Decl 1597 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1599 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1600 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1601 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1602 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1603 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1604 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1605 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1606 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1607 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1608 // NamedDecl 1609 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1610 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1611 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1612 // ValueDecl 1613 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1614 // DeclaratorDecl 1615 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1616 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1617 // FieldDecl 1618 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1619 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1620 // ObjC Ivar 1621 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1622 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1623 // Type Source Info 1624 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1625 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1626 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1627 DeclObjCIvarAbbrev = Stream.EmitAbbrev(Abv); 1628 1629 // Abbreviation for DECL_ENUM 1630 Abv = new BitCodeAbbrev(); 1631 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1632 // Redeclarable 1633 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1634 // Decl 1635 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1636 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1637 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1638 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1639 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1640 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1641 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1642 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1643 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1644 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1645 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1646 // NamedDecl 1647 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1648 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1649 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1650 // TypeDecl 1651 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1652 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1653 // TagDecl 1654 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1655 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1656 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1657 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1658 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1659 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1660 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1661 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1662 // EnumDecl 1663 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1664 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1665 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1666 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1667 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1668 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1669 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1670 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1671 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1672 // DC 1673 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1674 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1675 DeclEnumAbbrev = Stream.EmitAbbrev(Abv); 1676 1677 // Abbreviation for DECL_RECORD 1678 Abv = new BitCodeAbbrev(); 1679 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1680 // Redeclarable 1681 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1682 // Decl 1683 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1684 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1685 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1686 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1687 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1688 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1689 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1690 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1691 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1692 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1693 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1694 // NamedDecl 1695 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1696 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1697 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1698 // TypeDecl 1699 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1700 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1701 // TagDecl 1702 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1703 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1704 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1705 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1706 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1707 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1708 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1709 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1710 // RecordDecl 1711 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1712 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1713 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1714 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 1715 // DC 1716 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1717 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1718 DeclRecordAbbrev = Stream.EmitAbbrev(Abv); 1719 1720 // Abbreviation for DECL_PARM_VAR 1721 Abv = new BitCodeAbbrev(); 1722 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1723 // Redeclarable 1724 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1725 // Decl 1726 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1727 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1728 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1729 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1730 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1731 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1732 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1733 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1734 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1735 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1736 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1737 // NamedDecl 1738 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1739 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1740 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1741 // ValueDecl 1742 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1743 // DeclaratorDecl 1744 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1745 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1746 // VarDecl 1747 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1748 Abv->Add(BitCodeAbbrevOp(0)); // getTSCSpec 1749 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1750 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 1751 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1752 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1753 // ParmVarDecl 1754 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1755 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1756 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1757 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1758 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1759 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1760 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1761 // Type Source Info 1762 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1763 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1764 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1765 DeclParmVarAbbrev = Stream.EmitAbbrev(Abv); 1766 1767 // Abbreviation for DECL_TYPEDEF 1768 Abv = new BitCodeAbbrev(); 1769 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1770 // Redeclarable 1771 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1772 // Decl 1773 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1774 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1775 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1776 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1777 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1778 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 1779 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 1780 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1781 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 1782 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1783 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1784 // NamedDecl 1785 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1786 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1787 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1788 // TypeDecl 1789 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1790 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1791 // TypedefDecl 1792 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1793 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1794 DeclTypedefAbbrev = Stream.EmitAbbrev(Abv); 1795 1796 // Abbreviation for DECL_VAR 1797 Abv = new BitCodeAbbrev(); 1798 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1799 // Redeclarable 1800 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1801 // Decl 1802 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1803 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1804 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1805 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1806 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1807 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1808 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1809 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1810 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1811 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1812 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1813 // NamedDecl 1814 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1815 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1816 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1817 // ValueDecl 1818 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1819 // DeclaratorDecl 1820 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1821 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1822 // VarDecl 1823 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClass 1824 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // getTSCSpec 1825 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CXXDirectInitializer 1826 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 1827 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 1828 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 1829 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 1830 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 1831 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 1832 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 1833 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 1834 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasInit 1835 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasMemberSpecInfo 1836 // Type Source Info 1837 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1838 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1839 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1840 DeclVarAbbrev = Stream.EmitAbbrev(Abv); 1841 1842 // Abbreviation for DECL_CXX_METHOD 1843 Abv = new BitCodeAbbrev(); 1844 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 1845 // RedeclarableDecl 1846 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 1847 // Decl 1848 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1850 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 1851 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 1853 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 1854 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 1855 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 1856 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 1857 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate 1858 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1859 // NamedDecl 1860 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 1861 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 1862 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1863 // ValueDecl 1864 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1865 // DeclaratorDecl 1866 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 1867 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 1868 // FunctionDecl 1869 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 1870 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 1871 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 1872 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 1873 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 1874 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 1875 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 1876 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 1877 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 1878 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 1879 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 1880 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 1881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 1882 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr 1883 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 1884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 1885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 1886 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 1887 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind 1888 // This Array slurps the rest of the record. Fortunately we want to encode 1889 // (nearly) all the remaining (variable number of) fields in the same way. 1890 // 1891 // This is the function template information if any, then 1892 // NumParams and Params[] from FunctionDecl, and 1893 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 1894 // 1895 // Add an AbbrevOp for 'size then elements' and use it here. 1896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1898 DeclCXXMethodAbbrev = Stream.EmitAbbrev(Abv); 1899 1900 // Abbreviation for EXPR_DECL_REF 1901 Abv = new BitCodeAbbrev(); 1902 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 1903 //Stmt 1904 //Expr 1905 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1906 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1907 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1908 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1909 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1910 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1911 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1912 //DeclRefExpr 1913 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 1914 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 1915 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 1916 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 1917 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1918 1)); // RefersToEnclosingVariableOrCapture 1919 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 1920 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1921 DeclRefExprAbbrev = Stream.EmitAbbrev(Abv); 1922 1923 // Abbreviation for EXPR_INTEGER_LITERAL 1924 Abv = new BitCodeAbbrev(); 1925 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 1926 //Stmt 1927 //Expr 1928 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1929 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1930 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1931 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1932 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1933 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1934 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1935 //Integer Literal 1936 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1937 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 1938 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 1939 IntegerLiteralAbbrev = Stream.EmitAbbrev(Abv); 1940 1941 // Abbreviation for EXPR_CHARACTER_LITERAL 1942 Abv = new BitCodeAbbrev(); 1943 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 1944 //Stmt 1945 //Expr 1946 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1947 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1948 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1949 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1950 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1951 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1952 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1953 //Character Literal 1954 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 1955 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1956 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // getKind 1957 CharacterLiteralAbbrev = Stream.EmitAbbrev(Abv); 1958 1959 // Abbreviation for EXPR_IMPLICIT_CAST 1960 Abv = new BitCodeAbbrev(); 1961 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 1962 // Stmt 1963 // Expr 1964 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1965 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1966 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1967 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1968 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1969 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1970 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1971 // CastExpr 1972 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 1973 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 1974 // ImplicitCastExpr 1975 ExprImplicitCastAbbrev = Stream.EmitAbbrev(Abv); 1976 1977 Abv = new BitCodeAbbrev(); 1978 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1979 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1980 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1981 1982 Abv = new BitCodeAbbrev(); 1983 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1984 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1985 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1986 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1987 } 1988 1989 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1990 /// consumers of the AST. 1991 /// 1992 /// Such decls will always be deserialized from the AST file, so we would like 1993 /// this to be as restrictive as possible. Currently the predicate is driven by 1994 /// code generation requirements, if other clients have a different notion of 1995 /// what is "required" then we may have to consider an alternate scheme where 1996 /// clients can iterate over the top-level decls and get information on them, 1997 /// without necessary deserializing them. We could explicitly require such 1998 /// clients to use a separate API call to "realize" the decl. This should be 1999 /// relatively painless since they would presumably only do it for top-level 2000 /// decls. 2001 static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 2002 // An ObjCMethodDecl is never considered as "required" because its 2003 // implementation container always is. 2004 2005 // File scoped assembly or obj-c implementation must be seen. ImportDecl is 2006 // used by codegen to determine the set of imported modules to search for 2007 // inputs for automatic linking. 2008 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || isa<ImportDecl>(D)) 2009 return true; 2010 2011 return Context.DeclMustBeEmitted(D); 2012 } 2013 2014 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2015 // Switch case IDs are per Decl. 2016 ClearSwitchCaseIDs(); 2017 2018 RecordData Record; 2019 ASTDeclWriter W(*this, Context, Record); 2020 2021 // Determine the ID for this declaration. 2022 serialization::DeclID ID; 2023 if (D->isFromASTFile()) { 2024 assert(isRewritten(D) && "should not be emitting imported decl"); 2025 ID = getDeclID(D); 2026 } else { 2027 serialization::DeclID &IDR = DeclIDs[D]; 2028 if (IDR == 0) 2029 IDR = NextDeclID++; 2030 2031 ID= IDR; 2032 } 2033 2034 bool isReplacingADecl = ID < FirstDeclID; 2035 2036 // If this declaration is also a DeclContext, write blocks for the 2037 // declarations that lexically stored inside its context and those 2038 // declarations that are visible from its context. These blocks 2039 // are written before the declaration itself so that we can put 2040 // their offsets into the record for the declaration. 2041 uint64_t LexicalOffset = 0; 2042 uint64_t VisibleOffset = 0; 2043 DeclContext *DC = dyn_cast<DeclContext>(D); 2044 if (DC) { 2045 if (isReplacingADecl) { 2046 // It is replacing a decl from a chained PCH; make sure that the 2047 // DeclContext is fully loaded. 2048 if (DC->hasExternalLexicalStorage()) 2049 DC->LoadLexicalDeclsFromExternalStorage(); 2050 if (DC->hasExternalVisibleStorage()) 2051 Chain->completeVisibleDeclsMap(DC); 2052 } 2053 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 2054 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 2055 } 2056 2057 if (isReplacingADecl) { 2058 // We're replacing a decl in a previous file. 2059 ReplacedDecls.push_back(ReplacedDeclInfo(ID, Stream.GetCurrentBitNo(), 2060 D->getLocation())); 2061 } else { 2062 unsigned Index = ID - FirstDeclID; 2063 2064 // Record the offset for this declaration 2065 SourceLocation Loc = D->getLocation(); 2066 if (DeclOffsets.size() == Index) 2067 DeclOffsets.push_back(DeclOffset(Loc, Stream.GetCurrentBitNo())); 2068 else if (DeclOffsets.size() < Index) { 2069 DeclOffsets.resize(Index+1); 2070 DeclOffsets[Index].setLocation(Loc); 2071 DeclOffsets[Index].BitOffset = Stream.GetCurrentBitNo(); 2072 } 2073 2074 SourceManager &SM = Context.getSourceManager(); 2075 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2076 associateDeclWithFile(D, ID); 2077 } 2078 2079 // Build and emit a record for this declaration 2080 Record.clear(); 2081 W.Code = (serialization::DeclCode)0; 2082 W.AbbrevToUse = 0; 2083 W.Visit(D); 2084 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 2085 2086 if (!W.Code) 2087 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 2088 D->getDeclKindName() + "'"); 2089 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 2090 2091 // Flush any expressions, base specifiers, and ctor initializers that 2092 // were written as part of this declaration. 2093 FlushPendingAfterDecl(); 2094 2095 // Note declarations that should be deserialized eagerly so that we can add 2096 // them to a record in the AST file later. 2097 if (isRequiredDecl(D, Context)) 2098 EagerlyDeserializedDecls.push_back(ID); 2099 } 2100 2101 void ASTWriter::AddFunctionDefinition(const FunctionDecl *FD, 2102 RecordData &Record) { 2103 ClearSwitchCaseIDs(); 2104 2105 ASTDeclWriter W(*this, FD->getASTContext(), Record); 2106 W.AddFunctionDefinition(FD); 2107 } 2108