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 for (DeclID ID : LazySpecializations) 194 Record.push_back(ID); 195 } 196 }; 197 } 198 199 void ASTDeclWriter::Visit(Decl *D) { 200 DeclVisitor<ASTDeclWriter>::Visit(D); 201 202 // Source locations require array (variable-length) abbreviations. The 203 // abbreviation infrastructure requires that arrays are encoded last, so 204 // we handle it here in the case of those classes derived from DeclaratorDecl 205 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)){ 206 Writer.AddTypeSourceInfo(DD->getTypeSourceInfo(), Record); 207 } 208 209 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 210 // have been written. We want it last because we will not read it back when 211 // retrieving it from the AST, we'll just lazily set the offset. 212 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 213 Record.push_back(FD->doesThisDeclarationHaveABody()); 214 if (FD->doesThisDeclarationHaveABody()) 215 AddFunctionDefinition(FD); 216 } 217 } 218 219 void ASTDeclWriter::VisitDecl(Decl *D) { 220 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 221 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 222 Record.push_back(D->isInvalidDecl()); 223 Record.push_back(D->hasAttrs()); 224 if (D->hasAttrs()) 225 Writer.WriteAttributes(llvm::makeArrayRef(D->getAttrs().begin(), 226 D->getAttrs().size()), Record); 227 Record.push_back(D->isImplicit()); 228 Record.push_back(D->isUsed(false)); 229 Record.push_back(D->isReferenced()); 230 Record.push_back(D->isTopLevelDeclInObjCContainer()); 231 Record.push_back(D->getAccess()); 232 Record.push_back(D->isModulePrivate()); 233 Record.push_back(Writer.inferSubmoduleIDFromLocation(D->getLocation())); 234 235 // If this declaration injected a name into a context different from its 236 // lexical context, and that context is an imported namespace, we need to 237 // update its visible declarations to include this name. 238 // 239 // This happens when we instantiate a class with a friend declaration or a 240 // function with a local extern declaration, for instance. 241 if (D->isOutOfLine()) { 242 auto *DC = D->getDeclContext(); 243 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { 244 if (!NS->isFromASTFile()) 245 break; 246 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); 247 if (!NS->isInlineNamespace()) 248 break; 249 DC = NS->getParent(); 250 } 251 } 252 } 253 254 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 255 llvm_unreachable("Translation units aren't directly serialized"); 256 } 257 258 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 259 VisitDecl(D); 260 Writer.AddDeclarationName(D->getDeclName(), Record); 261 Record.push_back(needsAnonymousDeclarationNumber(D) 262 ? Writer.getAnonymousDeclarationNumber(D) 263 : 0); 264 } 265 266 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 267 VisitNamedDecl(D); 268 Writer.AddSourceLocation(D->getLocStart(), Record); 269 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 270 } 271 272 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 273 VisitRedeclarable(D); 274 VisitTypeDecl(D); 275 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 276 Record.push_back(D->isModed()); 277 if (D->isModed()) 278 Writer.AddTypeRef(D->getUnderlyingType(), Record); 279 } 280 281 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 282 VisitTypedefNameDecl(D); 283 if (!D->hasAttrs() && 284 !D->isImplicit() && 285 D->getFirstDecl() == D->getMostRecentDecl() && 286 !D->isInvalidDecl() && 287 !D->isTopLevelDeclInObjCContainer() && 288 !D->isModulePrivate() && 289 !needsAnonymousDeclarationNumber(D) && 290 D->getDeclName().getNameKind() == DeclarationName::Identifier) 291 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 292 293 Code = serialization::DECL_TYPEDEF; 294 } 295 296 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 297 VisitTypedefNameDecl(D); 298 Writer.AddDeclRef(D->getDescribedAliasTemplate(), Record); 299 Code = serialization::DECL_TYPEALIAS; 300 } 301 302 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 303 VisitRedeclarable(D); 304 VisitTypeDecl(D); 305 Record.push_back(D->getIdentifierNamespace()); 306 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 307 if (!isa<CXXRecordDecl>(D)) 308 Record.push_back(D->isCompleteDefinition()); 309 Record.push_back(D->isEmbeddedInDeclarator()); 310 Record.push_back(D->isFreeStanding()); 311 Record.push_back(D->isCompleteDefinitionRequired()); 312 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 313 314 if (D->hasExtInfo()) { 315 Record.push_back(1); 316 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 317 } else if (auto *TD = D->getTypedefNameForAnonDecl()) { 318 Record.push_back(2); 319 Writer.AddDeclRef(TD, Record); 320 Writer.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo(), Record); 321 } else if (auto *DD = D->getDeclaratorForAnonDecl()) { 322 Record.push_back(3); 323 Writer.AddDeclRef(DD, Record); 324 } else { 325 Record.push_back(0); 326 } 327 } 328 329 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 330 VisitTagDecl(D); 331 Writer.AddTypeSourceInfo(D->getIntegerTypeSourceInfo(), Record); 332 if (!D->getIntegerTypeSourceInfo()) 333 Writer.AddTypeRef(D->getIntegerType(), Record); 334 Writer.AddTypeRef(D->getPromotionType(), Record); 335 Record.push_back(D->getNumPositiveBits()); 336 Record.push_back(D->getNumNegativeBits()); 337 Record.push_back(D->isScoped()); 338 Record.push_back(D->isScopedUsingClassTag()); 339 Record.push_back(D->isFixed()); 340 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 341 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 342 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 343 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 344 } else { 345 Writer.AddDeclRef(nullptr, Record); 346 } 347 348 if (!D->hasAttrs() && 349 !D->isImplicit() && 350 !D->isUsed(false) && 351 !D->hasExtInfo() && 352 !D->getTypedefNameForAnonDecl() && 353 !D->getDeclaratorForAnonDecl() && 354 D->getFirstDecl() == D->getMostRecentDecl() && 355 !D->isInvalidDecl() && 356 !D->isReferenced() && 357 !D->isTopLevelDeclInObjCContainer() && 358 D->getAccess() == AS_none && 359 !D->isModulePrivate() && 360 !CXXRecordDecl::classofKind(D->getKind()) && 361 !D->getIntegerTypeSourceInfo() && 362 !D->getMemberSpecializationInfo() && 363 !needsAnonymousDeclarationNumber(D) && 364 D->getDeclName().getNameKind() == DeclarationName::Identifier) 365 AbbrevToUse = Writer.getDeclEnumAbbrev(); 366 367 Code = serialization::DECL_ENUM; 368 } 369 370 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 371 VisitTagDecl(D); 372 Record.push_back(D->hasFlexibleArrayMember()); 373 Record.push_back(D->isAnonymousStructOrUnion()); 374 Record.push_back(D->hasObjectMember()); 375 Record.push_back(D->hasVolatileMember()); 376 377 if (!D->hasAttrs() && 378 !D->isImplicit() && 379 !D->isUsed(false) && 380 !D->hasExtInfo() && 381 !D->getTypedefNameForAnonDecl() && 382 !D->getDeclaratorForAnonDecl() && 383 D->getFirstDecl() == D->getMostRecentDecl() && 384 !D->isInvalidDecl() && 385 !D->isReferenced() && 386 !D->isTopLevelDeclInObjCContainer() && 387 D->getAccess() == AS_none && 388 !D->isModulePrivate() && 389 !CXXRecordDecl::classofKind(D->getKind()) && 390 !needsAnonymousDeclarationNumber(D) && 391 D->getDeclName().getNameKind() == DeclarationName::Identifier) 392 AbbrevToUse = Writer.getDeclRecordAbbrev(); 393 394 Code = serialization::DECL_RECORD; 395 } 396 397 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 398 VisitNamedDecl(D); 399 Writer.AddTypeRef(D->getType(), Record); 400 } 401 402 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 403 VisitValueDecl(D); 404 Record.push_back(D->getInitExpr()? 1 : 0); 405 if (D->getInitExpr()) 406 Writer.AddStmt(D->getInitExpr()); 407 Writer.AddAPSInt(D->getInitVal(), Record); 408 409 Code = serialization::DECL_ENUM_CONSTANT; 410 } 411 412 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 413 VisitValueDecl(D); 414 Writer.AddSourceLocation(D->getInnerLocStart(), Record); 415 Record.push_back(D->hasExtInfo()); 416 if (D->hasExtInfo()) 417 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 418 } 419 420 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 421 VisitRedeclarable(D); 422 VisitDeclaratorDecl(D); 423 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 424 Record.push_back(D->getIdentifierNamespace()); 425 426 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 427 // after everything else is written. 428 429 Record.push_back((int)D->SClass); // FIXME: stable encoding 430 Record.push_back(D->IsInline); 431 Record.push_back(D->IsInlineSpecified); 432 Record.push_back(D->IsVirtualAsWritten); 433 Record.push_back(D->IsPure); 434 Record.push_back(D->HasInheritedPrototype); 435 Record.push_back(D->HasWrittenPrototype); 436 Record.push_back(D->IsDeleted); 437 Record.push_back(D->IsTrivial); 438 Record.push_back(D->IsDefaulted); 439 Record.push_back(D->IsExplicitlyDefaulted); 440 Record.push_back(D->HasImplicitReturnZero); 441 Record.push_back(D->IsConstexpr); 442 Record.push_back(D->HasSkippedBody); 443 Record.push_back(D->IsLateTemplateParsed); 444 Record.push_back(D->getLinkageInternal()); 445 Writer.AddSourceLocation(D->getLocEnd(), Record); 446 447 Record.push_back(D->getTemplatedKind()); 448 switch (D->getTemplatedKind()) { 449 case FunctionDecl::TK_NonTemplate: 450 break; 451 case FunctionDecl::TK_FunctionTemplate: 452 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); 453 break; 454 case FunctionDecl::TK_MemberSpecialization: { 455 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 456 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 457 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 458 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 459 break; 460 } 461 case FunctionDecl::TK_FunctionTemplateSpecialization: { 462 FunctionTemplateSpecializationInfo * 463 FTSInfo = D->getTemplateSpecializationInfo(); 464 Writer.AddDeclRef(FTSInfo->getTemplate(), Record); 465 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 466 467 // Template arguments. 468 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); 469 470 // Template args as written. 471 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 472 if (FTSInfo->TemplateArgumentsAsWritten) { 473 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 474 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 475 i!=e; ++i) 476 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], 477 Record); 478 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc, 479 Record); 480 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc, 481 Record); 482 } 483 484 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); 485 486 if (D->isCanonicalDecl()) { 487 // Write the template that contains the specializations set. We will 488 // add a FunctionTemplateSpecializationInfo to it when reading. 489 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); 490 } 491 break; 492 } 493 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 494 DependentFunctionTemplateSpecializationInfo * 495 DFTSInfo = D->getDependentSpecializationInfo(); 496 497 // Templates. 498 Record.push_back(DFTSInfo->getNumTemplates()); 499 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 500 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); 501 502 // Templates args. 503 Record.push_back(DFTSInfo->getNumTemplateArgs()); 504 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 505 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); 506 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); 507 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); 508 break; 509 } 510 } 511 512 Record.push_back(D->param_size()); 513 for (auto P : D->params()) 514 Writer.AddDeclRef(P, Record); 515 Code = serialization::DECL_FUNCTION; 516 } 517 518 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 519 VisitNamedDecl(D); 520 // FIXME: convert to LazyStmtPtr? 521 // Unlike C/C++, method bodies will never be in header files. 522 bool HasBodyStuff = D->getBody() != nullptr || 523 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; 524 Record.push_back(HasBodyStuff); 525 if (HasBodyStuff) { 526 Writer.AddStmt(D->getBody()); 527 Writer.AddDeclRef(D->getSelfDecl(), Record); 528 Writer.AddDeclRef(D->getCmdDecl(), Record); 529 } 530 Record.push_back(D->isInstanceMethod()); 531 Record.push_back(D->isVariadic()); 532 Record.push_back(D->isPropertyAccessor()); 533 Record.push_back(D->isDefined()); 534 Record.push_back(D->IsOverriding); 535 Record.push_back(D->HasSkippedBody); 536 537 Record.push_back(D->IsRedeclaration); 538 Record.push_back(D->HasRedeclaration); 539 if (D->HasRedeclaration) { 540 assert(Context.getObjCMethodRedeclaration(D)); 541 Writer.AddDeclRef(Context.getObjCMethodRedeclaration(D), Record); 542 } 543 544 // FIXME: stable encoding for @required/@optional 545 Record.push_back(D->getImplementationControl()); 546 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway 547 Record.push_back(D->getObjCDeclQualifier()); 548 Record.push_back(D->hasRelatedResultType()); 549 Writer.AddTypeRef(D->getReturnType(), Record); 550 Writer.AddTypeSourceInfo(D->getReturnTypeSourceInfo(), Record); 551 Writer.AddSourceLocation(D->getLocEnd(), Record); 552 Record.push_back(D->param_size()); 553 for (const auto *P : D->params()) 554 Writer.AddDeclRef(P, Record); 555 556 Record.push_back(D->SelLocsKind); 557 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 558 SourceLocation *SelLocs = D->getStoredSelLocs(); 559 Record.push_back(NumStoredSelLocs); 560 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 561 Writer.AddSourceLocation(SelLocs[i], Record); 562 563 Code = serialization::DECL_OBJC_METHOD; 564 } 565 566 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 567 VisitNamedDecl(D); 568 Writer.AddSourceLocation(D->getAtStartLoc(), Record); 569 Writer.AddSourceRange(D->getAtEndRange(), Record); 570 // Abstract class (no need to define a stable serialization::DECL code). 571 } 572 573 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 574 VisitRedeclarable(D); 575 VisitObjCContainerDecl(D); 576 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 577 578 Record.push_back(D->isThisDeclarationADefinition()); 579 if (D->isThisDeclarationADefinition()) { 580 // Write the DefinitionData 581 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 582 583 Writer.AddDeclRef(D->getSuperClass(), Record); 584 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 585 Writer.AddSourceLocation(D->getEndOfDefinitionLoc(), Record); 586 Record.push_back(Data.HasDesignatedInitializers); 587 588 // Write out the protocols that are directly referenced by the @interface. 589 Record.push_back(Data.ReferencedProtocols.size()); 590 for (const auto *P : D->protocols()) 591 Writer.AddDeclRef(P, Record); 592 for (const auto &PL : D->protocol_locs()) 593 Writer.AddSourceLocation(PL, Record); 594 595 // Write out the protocols that are transitively referenced. 596 Record.push_back(Data.AllReferencedProtocols.size()); 597 for (ObjCList<ObjCProtocolDecl>::iterator 598 P = Data.AllReferencedProtocols.begin(), 599 PEnd = Data.AllReferencedProtocols.end(); 600 P != PEnd; ++P) 601 Writer.AddDeclRef(*P, Record); 602 603 604 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 605 // Ensure that we write out the set of categories for this class. 606 Writer.ObjCClassesWithCategories.insert(D); 607 608 // Make sure that the categories get serialized. 609 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 610 (void)Writer.GetDeclRef(Cat); 611 } 612 } 613 614 Code = serialization::DECL_OBJC_INTERFACE; 615 } 616 617 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 618 VisitFieldDecl(D); 619 // FIXME: stable encoding for @public/@private/@protected/@package 620 Record.push_back(D->getAccessControl()); 621 Record.push_back(D->getSynthesize()); 622 623 if (!D->hasAttrs() && 624 !D->isImplicit() && 625 !D->isUsed(false) && 626 !D->isInvalidDecl() && 627 !D->isReferenced() && 628 !D->isModulePrivate() && 629 !D->getBitWidth() && 630 !D->hasExtInfo() && 631 D->getDeclName()) 632 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 633 634 Code = serialization::DECL_OBJC_IVAR; 635 } 636 637 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 638 VisitRedeclarable(D); 639 VisitObjCContainerDecl(D); 640 641 Record.push_back(D->isThisDeclarationADefinition()); 642 if (D->isThisDeclarationADefinition()) { 643 Record.push_back(D->protocol_size()); 644 for (const auto *I : D->protocols()) 645 Writer.AddDeclRef(I, Record); 646 for (const auto &PL : D->protocol_locs()) 647 Writer.AddSourceLocation(PL, Record); 648 } 649 650 Code = serialization::DECL_OBJC_PROTOCOL; 651 } 652 653 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 654 VisitFieldDecl(D); 655 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 656 } 657 658 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 659 VisitObjCContainerDecl(D); 660 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 661 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record); 662 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record); 663 Writer.AddDeclRef(D->getClassInterface(), Record); 664 Record.push_back(D->protocol_size()); 665 for (const auto *I : D->protocols()) 666 Writer.AddDeclRef(I, Record); 667 for (const auto &PL : D->protocol_locs()) 668 Writer.AddSourceLocation(PL, Record); 669 Code = serialization::DECL_OBJC_CATEGORY; 670 } 671 672 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 673 VisitNamedDecl(D); 674 Writer.AddDeclRef(D->getClassInterface(), Record); 675 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 676 } 677 678 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 679 VisitNamedDecl(D); 680 Writer.AddSourceLocation(D->getAtLoc(), Record); 681 Writer.AddSourceLocation(D->getLParenLoc(), 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 Record.push_back(D->defaultArgumentWasInherited()); 1384 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 1385 1386 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1387 } 1388 1389 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1390 // For an expanded parameter pack, record the number of expansion types here 1391 // so that it's easier for deserialization to allocate the right amount of 1392 // memory. 1393 if (D->isExpandedParameterPack()) 1394 Record.push_back(D->getNumExpansionTypes()); 1395 1396 VisitDeclaratorDecl(D); 1397 // TemplateParmPosition. 1398 Record.push_back(D->getDepth()); 1399 Record.push_back(D->getPosition()); 1400 1401 if (D->isExpandedParameterPack()) { 1402 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1403 Writer.AddTypeRef(D->getExpansionType(I), Record); 1404 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record); 1405 } 1406 1407 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1408 } else { 1409 // Rest of NonTypeTemplateParmDecl. 1410 Record.push_back(D->isParameterPack()); 1411 Record.push_back(D->getDefaultArgument() != nullptr); 1412 if (D->getDefaultArgument()) { 1413 Writer.AddStmt(D->getDefaultArgument()); 1414 Record.push_back(D->defaultArgumentWasInherited()); 1415 } 1416 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1417 } 1418 } 1419 1420 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1421 // For an expanded parameter pack, record the number of expansion types here 1422 // so that it's easier for deserialization to allocate the right amount of 1423 // memory. 1424 if (D->isExpandedParameterPack()) 1425 Record.push_back(D->getNumExpansionTemplateParameters()); 1426 1427 VisitTemplateDecl(D); 1428 // TemplateParmPosition. 1429 Record.push_back(D->getDepth()); 1430 Record.push_back(D->getPosition()); 1431 1432 if (D->isExpandedParameterPack()) { 1433 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1434 I != N; ++I) 1435 Writer.AddTemplateParameterList(D->getExpansionTemplateParameters(I), 1436 Record); 1437 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1438 } else { 1439 // Rest of TemplateTemplateParmDecl. 1440 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1441 Record.push_back(D->defaultArgumentWasInherited()); 1442 Record.push_back(D->isParameterPack()); 1443 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1444 } 1445 } 1446 1447 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1448 VisitRedeclarableTemplateDecl(D); 1449 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1450 } 1451 1452 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1453 VisitDecl(D); 1454 Writer.AddStmt(D->getAssertExpr()); 1455 Record.push_back(D->isFailed()); 1456 Writer.AddStmt(D->getMessage()); 1457 Writer.AddSourceLocation(D->getRParenLoc(), Record); 1458 Code = serialization::DECL_STATIC_ASSERT; 1459 } 1460 1461 /// \brief Emit the DeclContext part of a declaration context decl. 1462 /// 1463 /// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1464 /// block for this declaration context is stored. May be 0 to indicate 1465 /// that there are no declarations stored within this context. 1466 /// 1467 /// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1468 /// block for this declaration context is stored. May be 0 to indicate 1469 /// that there are no declarations visible from this context. Note 1470 /// that this value will not be emitted for non-primary declaration 1471 /// contexts. 1472 void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1473 uint64_t VisibleOffset) { 1474 Record.push_back(LexicalOffset); 1475 Record.push_back(VisibleOffset); 1476 } 1477 1478 template <typename T> 1479 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1480 T *First = D->getFirstDecl(); 1481 T *MostRecent = First->getMostRecentDecl(); 1482 if (MostRecent != First) { 1483 assert(isRedeclarableDeclKind(static_cast<T *>(D)->getKind()) && 1484 "Not considered redeclarable?"); 1485 1486 // There is more than one declaration of this entity, so we will need to 1487 // write a redeclaration chain. 1488 Writer.AddDeclRef(First, Record); 1489 Writer.Redeclarations.insert(First); 1490 1491 auto *Previous = D->getPreviousDecl(); 1492 1493 // In a modules build, we can have imported declarations after a local 1494 // canonical declaration. If this is the first local declaration, emit 1495 // a list of all such imported declarations so that we can ensure they 1496 // are loaded before we are. This allows us to rebuild the redecl chain 1497 // in the right order on reload (all declarations imported by a module 1498 // should be before all declarations provided by that module). 1499 bool EmitImportedMergedCanonicalDecls = false; 1500 if (Context.getLangOpts().Modules && Writer.Chain) { 1501 auto *PreviousLocal = Previous; 1502 while (PreviousLocal && PreviousLocal->isFromASTFile()) 1503 PreviousLocal = PreviousLocal->getPreviousDecl(); 1504 if (!PreviousLocal) 1505 EmitImportedMergedCanonicalDecls = true; 1506 } 1507 if (EmitImportedMergedCanonicalDecls) { 1508 llvm::SmallMapVector<ModuleFile*, Decl*, 16> FirstInModule; 1509 for (auto *Redecl = MostRecent; Redecl; 1510 Redecl = Redecl->getPreviousDecl()) 1511 if (Redecl->isFromASTFile()) 1512 FirstInModule[Writer.Chain->getOwningModuleFile(Redecl)] = Redecl; 1513 // FIXME: If FirstInModule has entries for modules A and B, and B imports 1514 // A (directly or indirectly), we don't need to write the entry for A. 1515 Record.push_back(FirstInModule.size()); 1516 for (auto I = FirstInModule.rbegin(), E = FirstInModule.rend(); 1517 I != E; ++I) 1518 Writer.AddDeclRef(I->second, Record); 1519 } else 1520 Record.push_back(0); 1521 1522 // Make sure that we serialize both the previous and the most-recent 1523 // declarations, which (transitively) ensures that all declarations in the 1524 // chain get serialized. 1525 // 1526 // FIXME: This is not correct; when we reach an imported declaration we 1527 // won't emit its previous declaration. 1528 (void)Writer.GetDeclRef(Previous); 1529 (void)Writer.GetDeclRef(MostRecent); 1530 } else { 1531 // We use the sentinel value 0 to indicate an only declaration. 1532 Record.push_back(0); 1533 } 1534 } 1535 1536 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1537 Record.push_back(D->varlist_size()); 1538 VisitDecl(D); 1539 for (auto *I : D->varlists()) 1540 Writer.AddStmt(I); 1541 Code = serialization::DECL_OMP_THREADPRIVATE; 1542 } 1543 1544 //===----------------------------------------------------------------------===// 1545 // ASTWriter Implementation 1546 //===----------------------------------------------------------------------===// 1547 1548 void ASTWriter::WriteDeclAbbrevs() { 1549 using namespace llvm; 1550 1551 BitCodeAbbrev *Abv; 1552 1553 // Abbreviation for DECL_FIELD 1554 Abv = new BitCodeAbbrev(); 1555 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1556 // Decl 1557 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1558 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1559 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1560 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1561 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1562 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1563 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1564 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1565 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1566 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1567 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1568 // NamedDecl 1569 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1570 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1571 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1572 // ValueDecl 1573 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1574 // DeclaratorDecl 1575 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1576 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1577 // FieldDecl 1578 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1579 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1580 // Type Source Info 1581 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1582 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1583 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1584 DeclFieldAbbrev = Stream.EmitAbbrev(Abv); 1585 1586 // Abbreviation for DECL_OBJC_IVAR 1587 Abv = new BitCodeAbbrev(); 1588 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1589 // Decl 1590 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1591 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1592 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1593 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1594 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1595 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1596 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1597 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1599 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1600 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1601 // NamedDecl 1602 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1603 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1604 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1605 // ValueDecl 1606 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1607 // DeclaratorDecl 1608 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1609 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1610 // FieldDecl 1611 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1612 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1613 // ObjC Ivar 1614 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1615 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1616 // Type Source Info 1617 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1618 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1619 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1620 DeclObjCIvarAbbrev = Stream.EmitAbbrev(Abv); 1621 1622 // Abbreviation for DECL_ENUM 1623 Abv = new BitCodeAbbrev(); 1624 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1625 // Redeclarable 1626 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1627 // Decl 1628 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1629 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1630 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1631 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1632 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1633 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1634 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1635 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1636 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1637 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1638 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1639 // NamedDecl 1640 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1641 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1642 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1643 // TypeDecl 1644 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1645 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1646 // TagDecl 1647 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1648 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1649 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1650 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1651 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1652 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1653 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1654 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1655 // EnumDecl 1656 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1657 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1658 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1659 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1660 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1661 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1662 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1663 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1664 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1665 // DC 1666 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1667 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1668 DeclEnumAbbrev = Stream.EmitAbbrev(Abv); 1669 1670 // Abbreviation for DECL_RECORD 1671 Abv = new BitCodeAbbrev(); 1672 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1673 // Redeclarable 1674 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1675 // Decl 1676 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1677 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1678 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1679 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1680 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1681 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1682 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1683 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1684 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1685 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1686 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1687 // NamedDecl 1688 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1689 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1690 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1691 // TypeDecl 1692 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1693 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1694 // TagDecl 1695 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1696 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1697 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1698 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1699 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1700 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1701 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1702 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1703 // RecordDecl 1704 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1705 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1706 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1707 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 1708 // DC 1709 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1710 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1711 DeclRecordAbbrev = Stream.EmitAbbrev(Abv); 1712 1713 // Abbreviation for DECL_PARM_VAR 1714 Abv = new BitCodeAbbrev(); 1715 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1716 // Redeclarable 1717 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1718 // Decl 1719 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1720 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1721 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1722 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1723 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1724 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1725 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1726 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1727 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1728 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1729 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1730 // NamedDecl 1731 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1732 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1733 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1734 // ValueDecl 1735 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1736 // DeclaratorDecl 1737 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1738 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1739 // VarDecl 1740 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1741 Abv->Add(BitCodeAbbrevOp(0)); // getTSCSpec 1742 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1743 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 1744 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1745 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1746 // ParmVarDecl 1747 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1748 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1749 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1750 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1751 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1752 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1753 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1754 // Type Source Info 1755 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1756 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1757 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1758 DeclParmVarAbbrev = Stream.EmitAbbrev(Abv); 1759 1760 // Abbreviation for DECL_TYPEDEF 1761 Abv = new BitCodeAbbrev(); 1762 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1763 // Redeclarable 1764 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1765 // Decl 1766 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1767 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1768 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1769 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1770 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1771 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 1772 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 1773 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1774 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 1775 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1776 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1777 // NamedDecl 1778 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1779 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1780 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1781 // TypeDecl 1782 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1783 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1784 // TypedefDecl 1785 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1786 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1787 DeclTypedefAbbrev = Stream.EmitAbbrev(Abv); 1788 1789 // Abbreviation for DECL_VAR 1790 Abv = new BitCodeAbbrev(); 1791 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1792 // Redeclarable 1793 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1794 // Decl 1795 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1796 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1797 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1798 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1799 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1800 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1801 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1802 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1803 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1804 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1805 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1806 // NamedDecl 1807 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1808 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1809 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1810 // ValueDecl 1811 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1812 // DeclaratorDecl 1813 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1814 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1815 // VarDecl 1816 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClass 1817 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // getTSCSpec 1818 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CXXDirectInitializer 1819 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 1820 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 1821 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 1822 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 1823 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 1824 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 1825 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 1826 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 1827 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasInit 1828 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasMemberSpecInfo 1829 // Type Source Info 1830 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1831 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1832 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1833 DeclVarAbbrev = Stream.EmitAbbrev(Abv); 1834 1835 // Abbreviation for DECL_CXX_METHOD 1836 Abv = new BitCodeAbbrev(); 1837 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 1838 // RedeclarableDecl 1839 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 1840 // Decl 1841 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1842 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1843 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 1844 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1845 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 1846 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 1847 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 1848 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 1850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate 1851 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1852 // NamedDecl 1853 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 1854 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 1855 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1856 // ValueDecl 1857 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1858 // DeclaratorDecl 1859 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 1860 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 1861 // FunctionDecl 1862 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 1863 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 1864 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 1865 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 1866 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 1867 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 1868 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 1869 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 1870 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 1871 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 1872 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 1873 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 1874 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 1875 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr 1876 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 1877 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 1878 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 1879 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 1880 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind 1881 // This Array slurps the rest of the record. Fortunately we want to encode 1882 // (nearly) all the remaining (variable number of) fields in the same way. 1883 // 1884 // This is the function template information if any, then 1885 // NumParams and Params[] from FunctionDecl, and 1886 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 1887 // 1888 // Add an AbbrevOp for 'size then elements' and use it here. 1889 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1890 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1891 DeclCXXMethodAbbrev = Stream.EmitAbbrev(Abv); 1892 1893 // Abbreviation for EXPR_DECL_REF 1894 Abv = new BitCodeAbbrev(); 1895 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 1896 //Stmt 1897 //Expr 1898 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1901 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1902 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1903 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1904 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1905 //DeclRefExpr 1906 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 1907 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 1908 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 1909 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 1910 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1911 1)); // RefersToEnclosingVariableOrCapture 1912 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 1913 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1914 DeclRefExprAbbrev = Stream.EmitAbbrev(Abv); 1915 1916 // Abbreviation for EXPR_INTEGER_LITERAL 1917 Abv = new BitCodeAbbrev(); 1918 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 1919 //Stmt 1920 //Expr 1921 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1922 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1923 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1924 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1925 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1926 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1927 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1928 //Integer Literal 1929 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1930 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 1931 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 1932 IntegerLiteralAbbrev = Stream.EmitAbbrev(Abv); 1933 1934 // Abbreviation for EXPR_CHARACTER_LITERAL 1935 Abv = new BitCodeAbbrev(); 1936 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 1937 //Stmt 1938 //Expr 1939 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1940 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1941 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1942 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1943 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1944 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1945 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1946 //Character Literal 1947 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 1948 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1949 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // getKind 1950 CharacterLiteralAbbrev = Stream.EmitAbbrev(Abv); 1951 1952 // Abbreviation for EXPR_IMPLICIT_CAST 1953 Abv = new BitCodeAbbrev(); 1954 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 1955 // Stmt 1956 // Expr 1957 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1958 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1959 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1960 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1961 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1962 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1963 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1964 // CastExpr 1965 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 1966 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 1967 // ImplicitCastExpr 1968 ExprImplicitCastAbbrev = Stream.EmitAbbrev(Abv); 1969 1970 Abv = new BitCodeAbbrev(); 1971 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1972 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1973 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1974 1975 Abv = new BitCodeAbbrev(); 1976 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1977 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1978 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1979 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1980 } 1981 1982 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1983 /// consumers of the AST. 1984 /// 1985 /// Such decls will always be deserialized from the AST file, so we would like 1986 /// this to be as restrictive as possible. Currently the predicate is driven by 1987 /// code generation requirements, if other clients have a different notion of 1988 /// what is "required" then we may have to consider an alternate scheme where 1989 /// clients can iterate over the top-level decls and get information on them, 1990 /// without necessary deserializing them. We could explicitly require such 1991 /// clients to use a separate API call to "realize" the decl. This should be 1992 /// relatively painless since they would presumably only do it for top-level 1993 /// decls. 1994 static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 1995 // An ObjCMethodDecl is never considered as "required" because its 1996 // implementation container always is. 1997 1998 // File scoped assembly or obj-c implementation must be seen. ImportDecl is 1999 // used by codegen to determine the set of imported modules to search for 2000 // inputs for automatic linking. 2001 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || isa<ImportDecl>(D)) 2002 return true; 2003 2004 return Context.DeclMustBeEmitted(D); 2005 } 2006 2007 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2008 // Switch case IDs are per Decl. 2009 ClearSwitchCaseIDs(); 2010 2011 RecordData Record; 2012 ASTDeclWriter W(*this, Context, Record); 2013 2014 // Determine the ID for this declaration. 2015 serialization::DeclID ID; 2016 if (D->isFromASTFile()) { 2017 assert(isRewritten(D) && "should not be emitting imported decl"); 2018 ID = getDeclID(D); 2019 } else { 2020 serialization::DeclID &IDR = DeclIDs[D]; 2021 if (IDR == 0) 2022 IDR = NextDeclID++; 2023 2024 ID= IDR; 2025 } 2026 2027 bool isReplacingADecl = ID < FirstDeclID; 2028 2029 // If this declaration is also a DeclContext, write blocks for the 2030 // declarations that lexically stored inside its context and those 2031 // declarations that are visible from its context. These blocks 2032 // are written before the declaration itself so that we can put 2033 // their offsets into the record for the declaration. 2034 uint64_t LexicalOffset = 0; 2035 uint64_t VisibleOffset = 0; 2036 DeclContext *DC = dyn_cast<DeclContext>(D); 2037 if (DC) { 2038 if (isReplacingADecl) { 2039 // It is replacing a decl from a chained PCH; make sure that the 2040 // DeclContext is fully loaded. 2041 if (DC->hasExternalLexicalStorage()) 2042 DC->LoadLexicalDeclsFromExternalStorage(); 2043 if (DC->hasExternalVisibleStorage()) 2044 Chain->completeVisibleDeclsMap(DC); 2045 } 2046 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 2047 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 2048 } 2049 2050 if (isReplacingADecl) { 2051 // We're replacing a decl in a previous file. 2052 ReplacedDecls.push_back(ReplacedDeclInfo(ID, Stream.GetCurrentBitNo(), 2053 D->getLocation())); 2054 } else { 2055 unsigned Index = ID - FirstDeclID; 2056 2057 // Record the offset for this declaration 2058 SourceLocation Loc = D->getLocation(); 2059 if (DeclOffsets.size() == Index) 2060 DeclOffsets.push_back(DeclOffset(Loc, Stream.GetCurrentBitNo())); 2061 else if (DeclOffsets.size() < Index) { 2062 DeclOffsets.resize(Index+1); 2063 DeclOffsets[Index].setLocation(Loc); 2064 DeclOffsets[Index].BitOffset = Stream.GetCurrentBitNo(); 2065 } 2066 2067 SourceManager &SM = Context.getSourceManager(); 2068 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2069 associateDeclWithFile(D, ID); 2070 } 2071 2072 // Build and emit a record for this declaration 2073 Record.clear(); 2074 W.Code = (serialization::DeclCode)0; 2075 W.AbbrevToUse = 0; 2076 W.Visit(D); 2077 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 2078 2079 if (!W.Code) 2080 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 2081 D->getDeclKindName() + "'"); 2082 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 2083 2084 // Flush any expressions, base specifiers, and ctor initializers that 2085 // were written as part of this declaration. 2086 FlushPendingAfterDecl(); 2087 2088 // Note declarations that should be deserialized eagerly so that we can add 2089 // them to a record in the AST file later. 2090 if (isRequiredDecl(D, Context)) 2091 EagerlyDeserializedDecls.push_back(ID); 2092 } 2093 2094 void ASTWriter::AddFunctionDefinition(const FunctionDecl *FD, 2095 RecordData &Record) { 2096 ClearSwitchCaseIDs(); 2097 2098 ASTDeclWriter W(*this, FD->getASTContext(), Record); 2099 W.AddFunctionDefinition(FD); 2100 } 2101