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 "ASTCommon.h" 15 #include "clang/AST/DeclCXX.h" 16 #include "clang/AST/DeclContextInternals.h" 17 #include "clang/AST/DeclTemplate.h" 18 #include "clang/AST/DeclVisitor.h" 19 #include "clang/AST/Expr.h" 20 #include "clang/Basic/SourceManager.h" 21 #include "clang/Serialization/ASTReader.h" 22 #include "clang/Serialization/ASTWriter.h" 23 #include "llvm/Bitcode/BitstreamWriter.h" 24 #include "llvm/Support/ErrorHandling.h" 25 using namespace clang; 26 using namespace serialization; 27 28 //===----------------------------------------------------------------------===// 29 // Declaration serialization 30 //===----------------------------------------------------------------------===// 31 32 namespace clang { 33 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 34 ASTWriter &Writer; 35 ASTContext &Context; 36 ASTRecordWriter Record; 37 38 serialization::DeclCode Code; 39 unsigned AbbrevToUse; 40 41 public: 42 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, 43 ASTWriter::RecordDataImpl &Record) 44 : Writer(Writer), Context(Context), Record(Writer, Record), 45 Code((serialization::DeclCode)0), AbbrevToUse(0) {} 46 47 uint64_t Emit(Decl *D) { 48 if (!Code) 49 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 50 D->getDeclKindName() + "'"); 51 return Record.Emit(Code, AbbrevToUse); 52 } 53 54 void Visit(Decl *D); 55 56 void VisitDecl(Decl *D); 57 void VisitPragmaCommentDecl(PragmaCommentDecl *D); 58 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D); 59 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 60 void VisitNamedDecl(NamedDecl *D); 61 void VisitLabelDecl(LabelDecl *LD); 62 void VisitNamespaceDecl(NamespaceDecl *D); 63 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 64 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 65 void VisitTypeDecl(TypeDecl *D); 66 void VisitTypedefNameDecl(TypedefNameDecl *D); 67 void VisitTypedefDecl(TypedefDecl *D); 68 void VisitTypeAliasDecl(TypeAliasDecl *D); 69 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 70 void VisitTagDecl(TagDecl *D); 71 void VisitEnumDecl(EnumDecl *D); 72 void VisitRecordDecl(RecordDecl *D); 73 void VisitCXXRecordDecl(CXXRecordDecl *D); 74 void VisitClassTemplateSpecializationDecl( 75 ClassTemplateSpecializationDecl *D); 76 void VisitClassTemplatePartialSpecializationDecl( 77 ClassTemplatePartialSpecializationDecl *D); 78 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D); 79 void VisitVarTemplatePartialSpecializationDecl( 80 VarTemplatePartialSpecializationDecl *D); 81 void VisitClassScopeFunctionSpecializationDecl( 82 ClassScopeFunctionSpecializationDecl *D); 83 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 84 void VisitValueDecl(ValueDecl *D); 85 void VisitEnumConstantDecl(EnumConstantDecl *D); 86 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 87 void VisitDeclaratorDecl(DeclaratorDecl *D); 88 void VisitFunctionDecl(FunctionDecl *D); 89 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D); 90 void VisitCXXMethodDecl(CXXMethodDecl *D); 91 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 92 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 93 void VisitCXXConversionDecl(CXXConversionDecl *D); 94 void VisitFieldDecl(FieldDecl *D); 95 void VisitMSPropertyDecl(MSPropertyDecl *D); 96 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 97 void VisitVarDecl(VarDecl *D); 98 void VisitImplicitParamDecl(ImplicitParamDecl *D); 99 void VisitParmVarDecl(ParmVarDecl *D); 100 void VisitDecompositionDecl(DecompositionDecl *D); 101 void VisitBindingDecl(BindingDecl *D); 102 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 103 void VisitTemplateDecl(TemplateDecl *D); 104 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 105 void VisitClassTemplateDecl(ClassTemplateDecl *D); 106 void VisitVarTemplateDecl(VarTemplateDecl *D); 107 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 108 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 109 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 110 void VisitUsingDecl(UsingDecl *D); 111 void VisitUsingPackDecl(UsingPackDecl *D); 112 void VisitUsingShadowDecl(UsingShadowDecl *D); 113 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D); 114 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 115 void VisitExportDecl(ExportDecl *D); 116 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 117 void VisitImportDecl(ImportDecl *D); 118 void VisitAccessSpecDecl(AccessSpecDecl *D); 119 void VisitFriendDecl(FriendDecl *D); 120 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 121 void VisitStaticAssertDecl(StaticAssertDecl *D); 122 void VisitBlockDecl(BlockDecl *D); 123 void VisitCapturedDecl(CapturedDecl *D); 124 void VisitEmptyDecl(EmptyDecl *D); 125 126 void VisitDeclContext(DeclContext *DC); 127 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 128 129 130 // FIXME: Put in the same order is DeclNodes.td? 131 void VisitObjCMethodDecl(ObjCMethodDecl *D); 132 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D); 133 void VisitObjCContainerDecl(ObjCContainerDecl *D); 134 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 135 void VisitObjCIvarDecl(ObjCIvarDecl *D); 136 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 137 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 138 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 139 void VisitObjCImplDecl(ObjCImplDecl *D); 140 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 141 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 142 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 143 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 144 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 145 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D); 146 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D); 147 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D); 148 149 /// Add an Objective-C type parameter list to the given record. 150 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) { 151 // Empty type parameter list. 152 if (!typeParams) { 153 Record.push_back(0); 154 return; 155 } 156 157 Record.push_back(typeParams->size()); 158 for (auto typeParam : *typeParams) { 159 Record.AddDeclRef(typeParam); 160 } 161 Record.AddSourceLocation(typeParams->getLAngleLoc()); 162 Record.AddSourceLocation(typeParams->getRAngleLoc()); 163 } 164 165 /// Add to the record the first declaration from each module file that 166 /// provides a declaration of D. The intent is to provide a sufficient 167 /// set such that reloading this set will load all current redeclarations. 168 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) { 169 llvm::MapVector<ModuleFile*, const Decl*> Firsts; 170 // FIXME: We can skip entries that we know are implied by others. 171 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) { 172 if (R->isFromASTFile()) 173 Firsts[Writer.Chain->getOwningModuleFile(R)] = R; 174 else if (IncludeLocal) 175 Firsts[nullptr] = R; 176 } 177 for (const auto &F : Firsts) 178 Record.AddDeclRef(F.second); 179 } 180 181 /// Get the specialization decl from an entry in the specialization list. 182 template <typename EntryType> 183 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType * 184 getSpecializationDecl(EntryType &T) { 185 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T); 186 } 187 188 /// Get the list of partial specializations from a template's common ptr. 189 template<typename T> 190 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) { 191 return Common->PartialSpecializations; 192 } 193 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) { 194 return None; 195 } 196 197 template<typename DeclTy> 198 void AddTemplateSpecializations(DeclTy *D) { 199 auto *Common = D->getCommonPtr(); 200 201 // If we have any lazy specializations, and the external AST source is 202 // our chained AST reader, we can just write out the DeclIDs. Otherwise, 203 // we need to resolve them to actual declarations. 204 if (Writer.Chain != Writer.Context->getExternalSource() && 205 Common->LazySpecializations) { 206 D->LoadLazySpecializations(); 207 assert(!Common->LazySpecializations); 208 } 209 210 ArrayRef<DeclID> LazySpecializations; 211 if (auto *LS = Common->LazySpecializations) 212 LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]); 213 214 // Add a slot to the record for the number of specializations. 215 unsigned I = Record.size(); 216 Record.push_back(0); 217 218 // AddFirstDeclFromEachModule might trigger deserialization, invalidating 219 // *Specializations iterators. 220 llvm::SmallVector<const Decl*, 16> Specs; 221 for (auto &Entry : Common->Specializations) 222 Specs.push_back(getSpecializationDecl(Entry)); 223 for (auto &Entry : getPartialSpecializations(Common)) 224 Specs.push_back(getSpecializationDecl(Entry)); 225 226 for (auto *D : Specs) { 227 assert(D->isCanonicalDecl() && "non-canonical decl in set"); 228 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true); 229 } 230 Record.append(LazySpecializations.begin(), LazySpecializations.end()); 231 232 // Update the size entry we added earlier. 233 Record[I] = Record.size() - I - 1; 234 } 235 236 /// Ensure that this template specialization is associated with the specified 237 /// template on reload. 238 void RegisterTemplateSpecialization(const Decl *Template, 239 const Decl *Specialization) { 240 Template = Template->getCanonicalDecl(); 241 242 // If the canonical template is local, we'll write out this specialization 243 // when we emit it. 244 // FIXME: We can do the same thing if there is any local declaration of 245 // the template, to avoid emitting an update record. 246 if (!Template->isFromASTFile()) 247 return; 248 249 // We only need to associate the first local declaration of the 250 // specialization. The other declarations will get pulled in by it. 251 if (Writer.getFirstLocalDecl(Specialization) != Specialization) 252 return; 253 254 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate( 255 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization)); 256 } 257 }; 258 } 259 260 void ASTDeclWriter::Visit(Decl *D) { 261 DeclVisitor<ASTDeclWriter>::Visit(D); 262 263 // Source locations require array (variable-length) abbreviations. The 264 // abbreviation infrastructure requires that arrays are encoded last, so 265 // we handle it here in the case of those classes derived from DeclaratorDecl 266 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { 267 Record.AddTypeSourceInfo(DD->getTypeSourceInfo()); 268 } 269 270 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 271 // have been written. We want it last because we will not read it back when 272 // retrieving it from the AST, we'll just lazily set the offset. 273 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 274 Record.push_back(FD->doesThisDeclarationHaveABody()); 275 if (FD->doesThisDeclarationHaveABody()) 276 Record.AddFunctionDefinition(FD); 277 } 278 279 // If this declaration is also a DeclContext, write blocks for the 280 // declarations that lexically stored inside its context and those 281 // declarations that are visible from its context. 282 if (DeclContext *DC = dyn_cast<DeclContext>(D)) 283 VisitDeclContext(DC); 284 } 285 286 void ASTDeclWriter::VisitDecl(Decl *D) { 287 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext())); 288 if (D->getDeclContext() != D->getLexicalDeclContext()) 289 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext())); 290 else 291 Record.push_back(0); 292 Record.push_back(D->isInvalidDecl()); 293 Record.push_back(D->hasAttrs()); 294 if (D->hasAttrs()) 295 Record.AddAttributes(D->getAttrs()); 296 Record.push_back(D->isImplicit()); 297 Record.push_back(D->isUsed(false)); 298 Record.push_back(D->isReferenced()); 299 Record.push_back(D->isTopLevelDeclInObjCContainer()); 300 Record.push_back(D->getAccess()); 301 Record.push_back(D->isModulePrivate()); 302 Record.push_back(Writer.getSubmoduleID(D->getOwningModule())); 303 304 // If this declaration injected a name into a context different from its 305 // lexical context, and that context is an imported namespace, we need to 306 // update its visible declarations to include this name. 307 // 308 // This happens when we instantiate a class with a friend declaration or a 309 // function with a local extern declaration, for instance. 310 // 311 // FIXME: Can we handle this in AddedVisibleDecl instead? 312 if (D->isOutOfLine()) { 313 auto *DC = D->getDeclContext(); 314 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { 315 if (!NS->isFromASTFile()) 316 break; 317 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); 318 if (!NS->isInlineNamespace()) 319 break; 320 DC = NS->getParent(); 321 } 322 } 323 } 324 325 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) { 326 StringRef Arg = D->getArg(); 327 Record.push_back(Arg.size()); 328 VisitDecl(D); 329 Record.AddSourceLocation(D->getLocStart()); 330 Record.push_back(D->getCommentKind()); 331 Record.AddString(Arg); 332 Code = serialization::DECL_PRAGMA_COMMENT; 333 } 334 335 void ASTDeclWriter::VisitPragmaDetectMismatchDecl( 336 PragmaDetectMismatchDecl *D) { 337 StringRef Name = D->getName(); 338 StringRef Value = D->getValue(); 339 Record.push_back(Name.size() + 1 + Value.size()); 340 VisitDecl(D); 341 Record.AddSourceLocation(D->getLocStart()); 342 Record.AddString(Name); 343 Record.AddString(Value); 344 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH; 345 } 346 347 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 348 llvm_unreachable("Translation units aren't directly serialized"); 349 } 350 351 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 352 VisitDecl(D); 353 Record.AddDeclarationName(D->getDeclName()); 354 Record.push_back(needsAnonymousDeclarationNumber(D) 355 ? Writer.getAnonymousDeclarationNumber(D) 356 : 0); 357 } 358 359 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 360 VisitNamedDecl(D); 361 Record.AddSourceLocation(D->getLocStart()); 362 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 363 } 364 365 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 366 VisitRedeclarable(D); 367 VisitTypeDecl(D); 368 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 369 Record.push_back(D->isModed()); 370 if (D->isModed()) 371 Record.AddTypeRef(D->getUnderlyingType()); 372 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false)); 373 } 374 375 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 376 VisitTypedefNameDecl(D); 377 if (D->getDeclContext() == D->getLexicalDeclContext() && 378 !D->hasAttrs() && 379 !D->isImplicit() && 380 D->getFirstDecl() == D->getMostRecentDecl() && 381 !D->isInvalidDecl() && 382 !D->isTopLevelDeclInObjCContainer() && 383 !D->isModulePrivate() && 384 !needsAnonymousDeclarationNumber(D) && 385 D->getDeclName().getNameKind() == DeclarationName::Identifier) 386 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 387 388 Code = serialization::DECL_TYPEDEF; 389 } 390 391 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 392 VisitTypedefNameDecl(D); 393 Record.AddDeclRef(D->getDescribedAliasTemplate()); 394 Code = serialization::DECL_TYPEALIAS; 395 } 396 397 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 398 VisitRedeclarable(D); 399 VisitTypeDecl(D); 400 Record.push_back(D->getIdentifierNamespace()); 401 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 402 if (!isa<CXXRecordDecl>(D)) 403 Record.push_back(D->isCompleteDefinition()); 404 Record.push_back(D->isEmbeddedInDeclarator()); 405 Record.push_back(D->isFreeStanding()); 406 Record.push_back(D->isCompleteDefinitionRequired()); 407 Record.AddSourceRange(D->getBraceRange()); 408 409 if (D->hasExtInfo()) { 410 Record.push_back(1); 411 Record.AddQualifierInfo(*D->getExtInfo()); 412 } else if (auto *TD = D->getTypedefNameForAnonDecl()) { 413 Record.push_back(2); 414 Record.AddDeclRef(TD); 415 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo()); 416 } else { 417 Record.push_back(0); 418 } 419 } 420 421 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 422 VisitTagDecl(D); 423 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo()); 424 if (!D->getIntegerTypeSourceInfo()) 425 Record.AddTypeRef(D->getIntegerType()); 426 Record.AddTypeRef(D->getPromotionType()); 427 Record.push_back(D->getNumPositiveBits()); 428 Record.push_back(D->getNumNegativeBits()); 429 Record.push_back(D->isScoped()); 430 Record.push_back(D->isScopedUsingClassTag()); 431 Record.push_back(D->isFixed()); 432 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 433 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 434 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 435 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 436 } else { 437 Record.AddDeclRef(nullptr); 438 } 439 440 if (D->getDeclContext() == D->getLexicalDeclContext() && 441 !D->hasAttrs() && 442 !D->isImplicit() && 443 !D->isUsed(false) && 444 !D->hasExtInfo() && 445 !D->getTypedefNameForAnonDecl() && 446 D->getFirstDecl() == D->getMostRecentDecl() && 447 !D->isInvalidDecl() && 448 !D->isReferenced() && 449 !D->isTopLevelDeclInObjCContainer() && 450 D->getAccess() == AS_none && 451 !D->isModulePrivate() && 452 !CXXRecordDecl::classofKind(D->getKind()) && 453 !D->getIntegerTypeSourceInfo() && 454 !D->getMemberSpecializationInfo() && 455 !needsAnonymousDeclarationNumber(D) && 456 D->getDeclName().getNameKind() == DeclarationName::Identifier) 457 AbbrevToUse = Writer.getDeclEnumAbbrev(); 458 459 Code = serialization::DECL_ENUM; 460 } 461 462 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 463 VisitTagDecl(D); 464 Record.push_back(D->hasFlexibleArrayMember()); 465 Record.push_back(D->isAnonymousStructOrUnion()); 466 Record.push_back(D->hasObjectMember()); 467 Record.push_back(D->hasVolatileMember()); 468 469 if (D->getDeclContext() == D->getLexicalDeclContext() && 470 !D->hasAttrs() && 471 !D->isImplicit() && 472 !D->isUsed(false) && 473 !D->hasExtInfo() && 474 !D->getTypedefNameForAnonDecl() && 475 D->getFirstDecl() == D->getMostRecentDecl() && 476 !D->isInvalidDecl() && 477 !D->isReferenced() && 478 !D->isTopLevelDeclInObjCContainer() && 479 D->getAccess() == AS_none && 480 !D->isModulePrivate() && 481 !CXXRecordDecl::classofKind(D->getKind()) && 482 !needsAnonymousDeclarationNumber(D) && 483 D->getDeclName().getNameKind() == DeclarationName::Identifier) 484 AbbrevToUse = Writer.getDeclRecordAbbrev(); 485 486 Code = serialization::DECL_RECORD; 487 } 488 489 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 490 VisitNamedDecl(D); 491 Record.AddTypeRef(D->getType()); 492 } 493 494 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 495 VisitValueDecl(D); 496 Record.push_back(D->getInitExpr()? 1 : 0); 497 if (D->getInitExpr()) 498 Record.AddStmt(D->getInitExpr()); 499 Record.AddAPSInt(D->getInitVal()); 500 501 Code = serialization::DECL_ENUM_CONSTANT; 502 } 503 504 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 505 VisitValueDecl(D); 506 Record.AddSourceLocation(D->getInnerLocStart()); 507 Record.push_back(D->hasExtInfo()); 508 if (D->hasExtInfo()) 509 Record.AddQualifierInfo(*D->getExtInfo()); 510 } 511 512 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 513 VisitRedeclarable(D); 514 VisitDeclaratorDecl(D); 515 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 516 Record.push_back(D->getIdentifierNamespace()); 517 518 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 519 // after everything else is written. 520 521 Record.push_back((int)D->SClass); // FIXME: stable encoding 522 Record.push_back(D->IsInline); 523 Record.push_back(D->IsInlineSpecified); 524 Record.push_back(D->IsExplicitSpecified); 525 Record.push_back(D->IsVirtualAsWritten); 526 Record.push_back(D->IsPure); 527 Record.push_back(D->HasInheritedPrototype); 528 Record.push_back(D->HasWrittenPrototype); 529 Record.push_back(D->IsDeleted); 530 Record.push_back(D->IsTrivial); 531 Record.push_back(D->IsDefaulted); 532 Record.push_back(D->IsExplicitlyDefaulted); 533 Record.push_back(D->HasImplicitReturnZero); 534 Record.push_back(D->IsConstexpr); 535 Record.push_back(D->UsesSEHTry); 536 Record.push_back(D->HasSkippedBody); 537 Record.push_back(D->IsLateTemplateParsed); 538 Record.push_back(D->getLinkageInternal()); 539 Record.AddSourceLocation(D->getLocEnd()); 540 541 Record.push_back(D->getTemplatedKind()); 542 switch (D->getTemplatedKind()) { 543 case FunctionDecl::TK_NonTemplate: 544 break; 545 case FunctionDecl::TK_FunctionTemplate: 546 Record.AddDeclRef(D->getDescribedFunctionTemplate()); 547 break; 548 case FunctionDecl::TK_MemberSpecialization: { 549 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 550 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 551 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 552 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 553 break; 554 } 555 case FunctionDecl::TK_FunctionTemplateSpecialization: { 556 FunctionTemplateSpecializationInfo * 557 FTSInfo = D->getTemplateSpecializationInfo(); 558 559 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); 560 561 Record.AddDeclRef(FTSInfo->getTemplate()); 562 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 563 564 // Template arguments. 565 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); 566 567 // Template args as written. 568 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 569 if (FTSInfo->TemplateArgumentsAsWritten) { 570 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 571 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 572 i!=e; ++i) 573 Record.AddTemplateArgumentLoc( 574 (*FTSInfo->TemplateArgumentsAsWritten)[i]); 575 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc); 576 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc); 577 } 578 579 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); 580 581 if (D->isCanonicalDecl()) { 582 // Write the template that contains the specializations set. We will 583 // add a FunctionTemplateSpecializationInfo to it when reading. 584 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); 585 } 586 break; 587 } 588 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 589 DependentFunctionTemplateSpecializationInfo * 590 DFTSInfo = D->getDependentSpecializationInfo(); 591 592 // Templates. 593 Record.push_back(DFTSInfo->getNumTemplates()); 594 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 595 Record.AddDeclRef(DFTSInfo->getTemplate(i)); 596 597 // Templates args. 598 Record.push_back(DFTSInfo->getNumTemplateArgs()); 599 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 600 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i)); 601 Record.AddSourceLocation(DFTSInfo->getLAngleLoc()); 602 Record.AddSourceLocation(DFTSInfo->getRAngleLoc()); 603 break; 604 } 605 } 606 607 Record.push_back(D->param_size()); 608 for (auto P : D->parameters()) 609 Record.AddDeclRef(P); 610 Code = serialization::DECL_FUNCTION; 611 } 612 613 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { 614 VisitFunctionDecl(D); 615 Record.push_back(D->isCopyDeductionCandidate()); 616 Code = serialization::DECL_CXX_DEDUCTION_GUIDE; 617 } 618 619 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 620 VisitNamedDecl(D); 621 // FIXME: convert to LazyStmtPtr? 622 // Unlike C/C++, method bodies will never be in header files. 623 bool HasBodyStuff = D->getBody() != nullptr || 624 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; 625 Record.push_back(HasBodyStuff); 626 if (HasBodyStuff) { 627 Record.AddStmt(D->getBody()); 628 Record.AddDeclRef(D->getSelfDecl()); 629 Record.AddDeclRef(D->getCmdDecl()); 630 } 631 Record.push_back(D->isInstanceMethod()); 632 Record.push_back(D->isVariadic()); 633 Record.push_back(D->isPropertyAccessor()); 634 Record.push_back(D->isDefined()); 635 Record.push_back(D->IsOverriding); 636 Record.push_back(D->HasSkippedBody); 637 638 Record.push_back(D->IsRedeclaration); 639 Record.push_back(D->HasRedeclaration); 640 if (D->HasRedeclaration) { 641 assert(Context.getObjCMethodRedeclaration(D)); 642 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); 643 } 644 645 // FIXME: stable encoding for @required/@optional 646 Record.push_back(D->getImplementationControl()); 647 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 648 Record.push_back(D->getObjCDeclQualifier()); 649 Record.push_back(D->hasRelatedResultType()); 650 Record.AddTypeRef(D->getReturnType()); 651 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); 652 Record.AddSourceLocation(D->getLocEnd()); 653 Record.push_back(D->param_size()); 654 for (const auto *P : D->parameters()) 655 Record.AddDeclRef(P); 656 657 Record.push_back(D->SelLocsKind); 658 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 659 SourceLocation *SelLocs = D->getStoredSelLocs(); 660 Record.push_back(NumStoredSelLocs); 661 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 662 Record.AddSourceLocation(SelLocs[i]); 663 664 Code = serialization::DECL_OBJC_METHOD; 665 } 666 667 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { 668 VisitTypedefNameDecl(D); 669 Record.push_back(D->Variance); 670 Record.push_back(D->Index); 671 Record.AddSourceLocation(D->VarianceLoc); 672 Record.AddSourceLocation(D->ColonLoc); 673 674 Code = serialization::DECL_OBJC_TYPE_PARAM; 675 } 676 677 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 678 VisitNamedDecl(D); 679 Record.AddSourceLocation(D->getAtStartLoc()); 680 Record.AddSourceRange(D->getAtEndRange()); 681 // Abstract class (no need to define a stable serialization::DECL code). 682 } 683 684 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 685 VisitRedeclarable(D); 686 VisitObjCContainerDecl(D); 687 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 688 AddObjCTypeParamList(D->TypeParamList); 689 690 Record.push_back(D->isThisDeclarationADefinition()); 691 if (D->isThisDeclarationADefinition()) { 692 // Write the DefinitionData 693 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 694 695 Record.AddTypeSourceInfo(D->getSuperClassTInfo()); 696 Record.AddSourceLocation(D->getEndOfDefinitionLoc()); 697 Record.push_back(Data.HasDesignatedInitializers); 698 699 // Write out the protocols that are directly referenced by the @interface. 700 Record.push_back(Data.ReferencedProtocols.size()); 701 for (const auto *P : D->protocols()) 702 Record.AddDeclRef(P); 703 for (const auto &PL : D->protocol_locs()) 704 Record.AddSourceLocation(PL); 705 706 // Write out the protocols that are transitively referenced. 707 Record.push_back(Data.AllReferencedProtocols.size()); 708 for (ObjCList<ObjCProtocolDecl>::iterator 709 P = Data.AllReferencedProtocols.begin(), 710 PEnd = Data.AllReferencedProtocols.end(); 711 P != PEnd; ++P) 712 Record.AddDeclRef(*P); 713 714 715 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 716 // Ensure that we write out the set of categories for this class. 717 Writer.ObjCClassesWithCategories.insert(D); 718 719 // Make sure that the categories get serialized. 720 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 721 (void)Writer.GetDeclRef(Cat); 722 } 723 } 724 725 Code = serialization::DECL_OBJC_INTERFACE; 726 } 727 728 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 729 VisitFieldDecl(D); 730 // FIXME: stable encoding for @public/@private/@protected/@package 731 Record.push_back(D->getAccessControl()); 732 Record.push_back(D->getSynthesize()); 733 734 if (D->getDeclContext() == D->getLexicalDeclContext() && 735 !D->hasAttrs() && 736 !D->isImplicit() && 737 !D->isUsed(false) && 738 !D->isInvalidDecl() && 739 !D->isReferenced() && 740 !D->isModulePrivate() && 741 !D->getBitWidth() && 742 !D->hasExtInfo() && 743 D->getDeclName()) 744 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 745 746 Code = serialization::DECL_OBJC_IVAR; 747 } 748 749 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 750 VisitRedeclarable(D); 751 VisitObjCContainerDecl(D); 752 753 Record.push_back(D->isThisDeclarationADefinition()); 754 if (D->isThisDeclarationADefinition()) { 755 Record.push_back(D->protocol_size()); 756 for (const auto *I : D->protocols()) 757 Record.AddDeclRef(I); 758 for (const auto &PL : D->protocol_locs()) 759 Record.AddSourceLocation(PL); 760 } 761 762 Code = serialization::DECL_OBJC_PROTOCOL; 763 } 764 765 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 766 VisitFieldDecl(D); 767 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 768 } 769 770 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 771 VisitObjCContainerDecl(D); 772 Record.AddSourceLocation(D->getCategoryNameLoc()); 773 Record.AddSourceLocation(D->getIvarLBraceLoc()); 774 Record.AddSourceLocation(D->getIvarRBraceLoc()); 775 Record.AddDeclRef(D->getClassInterface()); 776 AddObjCTypeParamList(D->TypeParamList); 777 Record.push_back(D->protocol_size()); 778 for (const auto *I : D->protocols()) 779 Record.AddDeclRef(I); 780 for (const auto &PL : D->protocol_locs()) 781 Record.AddSourceLocation(PL); 782 Code = serialization::DECL_OBJC_CATEGORY; 783 } 784 785 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 786 VisitNamedDecl(D); 787 Record.AddDeclRef(D->getClassInterface()); 788 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 789 } 790 791 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 792 VisitNamedDecl(D); 793 Record.AddSourceLocation(D->getAtLoc()); 794 Record.AddSourceLocation(D->getLParenLoc()); 795 Record.AddTypeRef(D->getType()); 796 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 797 // FIXME: stable encoding 798 Record.push_back((unsigned)D->getPropertyAttributes()); 799 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 800 // FIXME: stable encoding 801 Record.push_back((unsigned)D->getPropertyImplementation()); 802 Record.AddDeclarationName(D->getGetterName()); 803 Record.AddSourceLocation(D->getGetterNameLoc()); 804 Record.AddDeclarationName(D->getSetterName()); 805 Record.AddSourceLocation(D->getSetterNameLoc()); 806 Record.AddDeclRef(D->getGetterMethodDecl()); 807 Record.AddDeclRef(D->getSetterMethodDecl()); 808 Record.AddDeclRef(D->getPropertyIvarDecl()); 809 Code = serialization::DECL_OBJC_PROPERTY; 810 } 811 812 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 813 VisitObjCContainerDecl(D); 814 Record.AddDeclRef(D->getClassInterface()); 815 // Abstract class (no need to define a stable serialization::DECL code). 816 } 817 818 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 819 VisitObjCImplDecl(D); 820 Record.AddSourceLocation(D->getCategoryNameLoc()); 821 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 822 } 823 824 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 825 VisitObjCImplDecl(D); 826 Record.AddDeclRef(D->getSuperClass()); 827 Record.AddSourceLocation(D->getSuperClassLoc()); 828 Record.AddSourceLocation(D->getIvarLBraceLoc()); 829 Record.AddSourceLocation(D->getIvarRBraceLoc()); 830 Record.push_back(D->hasNonZeroConstructors()); 831 Record.push_back(D->hasDestructors()); 832 Record.push_back(D->NumIvarInitializers); 833 if (D->NumIvarInitializers) 834 Record.AddCXXCtorInitializers( 835 llvm::makeArrayRef(D->init_begin(), D->init_end())); 836 Code = serialization::DECL_OBJC_IMPLEMENTATION; 837 } 838 839 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 840 VisitDecl(D); 841 Record.AddSourceLocation(D->getLocStart()); 842 Record.AddDeclRef(D->getPropertyDecl()); 843 Record.AddDeclRef(D->getPropertyIvarDecl()); 844 Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); 845 Record.AddStmt(D->getGetterCXXConstructor()); 846 Record.AddStmt(D->getSetterCXXAssignment()); 847 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 848 } 849 850 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 851 VisitDeclaratorDecl(D); 852 Record.push_back(D->isMutable()); 853 854 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt(); 855 Record.push_back(ISK); 856 if (ISK == FieldDecl::ISK_CapturedVLAType) 857 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); 858 else if (ISK) 859 Record.AddStmt(D->getInClassInitializer()); 860 861 Record.AddStmt(D->getBitWidth()); 862 863 if (!D->getDeclName()) 864 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); 865 866 if (D->getDeclContext() == D->getLexicalDeclContext() && 867 !D->hasAttrs() && 868 !D->isImplicit() && 869 !D->isUsed(false) && 870 !D->isInvalidDecl() && 871 !D->isReferenced() && 872 !D->isTopLevelDeclInObjCContainer() && 873 !D->isModulePrivate() && 874 !D->getBitWidth() && 875 !D->hasInClassInitializer() && 876 !D->hasCapturedVLAType() && 877 !D->hasExtInfo() && 878 !ObjCIvarDecl::classofKind(D->getKind()) && 879 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 880 D->getDeclName()) 881 AbbrevToUse = Writer.getDeclFieldAbbrev(); 882 883 Code = serialization::DECL_FIELD; 884 } 885 886 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 887 VisitDeclaratorDecl(D); 888 Record.AddIdentifierRef(D->getGetterId()); 889 Record.AddIdentifierRef(D->getSetterId()); 890 Code = serialization::DECL_MS_PROPERTY; 891 } 892 893 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 894 VisitValueDecl(D); 895 Record.push_back(D->getChainingSize()); 896 897 for (const auto *P : D->chain()) 898 Record.AddDeclRef(P); 899 Code = serialization::DECL_INDIRECTFIELD; 900 } 901 902 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 903 VisitRedeclarable(D); 904 VisitDeclaratorDecl(D); 905 Record.push_back(D->getStorageClass()); 906 Record.push_back(D->getTSCSpec()); 907 Record.push_back(D->getInitStyle()); 908 if (!isa<ParmVarDecl>(D)) { 909 Record.push_back(D->isThisDeclarationADemotedDefinition()); 910 Record.push_back(D->isExceptionVariable()); 911 Record.push_back(D->isNRVOVariable()); 912 Record.push_back(D->isCXXForRangeDecl()); 913 Record.push_back(D->isARCPseudoStrong()); 914 Record.push_back(D->isInline()); 915 Record.push_back(D->isInlineSpecified()); 916 Record.push_back(D->isConstexpr()); 917 Record.push_back(D->isInitCapture()); 918 Record.push_back(D->isPreviousDeclInSameBlockScope()); 919 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) 920 Record.push_back(static_cast<unsigned>(IPD->getParameterKind())); 921 else 922 Record.push_back(0); 923 } 924 Record.push_back(D->getLinkageInternal()); 925 926 if (D->getInit()) { 927 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); 928 Record.AddStmt(D->getInit()); 929 } else { 930 Record.push_back(0); 931 } 932 933 if (D->getStorageDuration() == SD_Static) { 934 bool ModulesCodegen = false; 935 if (Writer.WritingModule && 936 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() && 937 !isa<VarTemplateSpecializationDecl>(D)) { 938 // When building a C++ Modules TS module interface unit, a strong 939 // definition in the module interface is provided by the compilation of 940 // that module interface unit, not by its users. (Inline variables are 941 // still emitted in module users.) 942 ModulesCodegen = 943 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit && 944 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal); 945 } 946 Record.push_back(ModulesCodegen); 947 if (ModulesCodegen) 948 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D)); 949 } 950 951 enum { 952 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 953 }; 954 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 955 Record.push_back(VarTemplate); 956 Record.AddDeclRef(TemplD); 957 } else if (MemberSpecializationInfo *SpecInfo 958 = D->getMemberSpecializationInfo()) { 959 Record.push_back(StaticDataMemberSpecialization); 960 Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); 961 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 962 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); 963 } else { 964 Record.push_back(VarNotTemplate); 965 } 966 967 if (D->getDeclContext() == D->getLexicalDeclContext() && 968 !D->hasAttrs() && 969 !D->isImplicit() && 970 !D->isUsed(false) && 971 !D->isInvalidDecl() && 972 !D->isReferenced() && 973 !D->isTopLevelDeclInObjCContainer() && 974 D->getAccess() == AS_none && 975 !D->isModulePrivate() && 976 !needsAnonymousDeclarationNumber(D) && 977 D->getDeclName().getNameKind() == DeclarationName::Identifier && 978 !D->hasExtInfo() && 979 D->getFirstDecl() == D->getMostRecentDecl() && 980 D->getKind() == Decl::Var && 981 !D->isInline() && 982 !D->isConstexpr() && 983 !D->isInitCapture() && 984 !D->isPreviousDeclInSameBlockScope() && 985 D->getStorageDuration() != SD_Static && 986 !D->getMemberSpecializationInfo()) 987 AbbrevToUse = Writer.getDeclVarAbbrev(); 988 989 Code = serialization::DECL_VAR; 990 } 991 992 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 993 VisitVarDecl(D); 994 Code = serialization::DECL_IMPLICIT_PARAM; 995 } 996 997 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 998 VisitVarDecl(D); 999 Record.push_back(D->isObjCMethodParameter()); 1000 Record.push_back(D->getFunctionScopeDepth()); 1001 Record.push_back(D->getFunctionScopeIndex()); 1002 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 1003 Record.push_back(D->isKNRPromoted()); 1004 Record.push_back(D->hasInheritedDefaultArg()); 1005 Record.push_back(D->hasUninstantiatedDefaultArg()); 1006 if (D->hasUninstantiatedDefaultArg()) 1007 Record.AddStmt(D->getUninstantiatedDefaultArg()); 1008 Code = serialization::DECL_PARM_VAR; 1009 1010 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 1011 1012 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 1013 // we dynamically check for the properties that we optimize for, but don't 1014 // know are true of all PARM_VAR_DECLs. 1015 if (D->getDeclContext() == D->getLexicalDeclContext() && 1016 !D->hasAttrs() && 1017 !D->hasExtInfo() && 1018 !D->isImplicit() && 1019 !D->isUsed(false) && 1020 !D->isInvalidDecl() && 1021 !D->isReferenced() && 1022 D->getAccess() == AS_none && 1023 !D->isModulePrivate() && 1024 D->getStorageClass() == 0 && 1025 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 1026 D->getFunctionScopeDepth() == 0 && 1027 D->getObjCDeclQualifier() == 0 && 1028 !D->isKNRPromoted() && 1029 !D->hasInheritedDefaultArg() && 1030 D->getInit() == nullptr && 1031 !D->hasUninstantiatedDefaultArg()) // No default expr. 1032 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 1033 1034 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 1035 // just us assuming it. 1036 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 1037 assert(!D->isThisDeclarationADemotedDefinition() 1038 && "PARM_VAR_DECL can't be demoted definition."); 1039 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 1040 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 1041 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 1042 assert(!D->isStaticDataMember() && 1043 "PARM_VAR_DECL can't be static data member"); 1044 } 1045 1046 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { 1047 // Record the number of bindings first to simplify deserialization. 1048 Record.push_back(D->bindings().size()); 1049 1050 VisitVarDecl(D); 1051 for (auto *B : D->bindings()) 1052 Record.AddDeclRef(B); 1053 Code = serialization::DECL_DECOMPOSITION; 1054 } 1055 1056 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { 1057 VisitValueDecl(D); 1058 Record.AddStmt(D->getBinding()); 1059 Code = serialization::DECL_BINDING; 1060 } 1061 1062 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 1063 VisitDecl(D); 1064 Record.AddStmt(D->getAsmString()); 1065 Record.AddSourceLocation(D->getRParenLoc()); 1066 Code = serialization::DECL_FILE_SCOPE_ASM; 1067 } 1068 1069 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 1070 VisitDecl(D); 1071 Code = serialization::DECL_EMPTY; 1072 } 1073 1074 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 1075 VisitDecl(D); 1076 Record.AddStmt(D->getBody()); 1077 Record.AddTypeSourceInfo(D->getSignatureAsWritten()); 1078 Record.push_back(D->param_size()); 1079 for (ParmVarDecl *P : D->parameters()) 1080 Record.AddDeclRef(P); 1081 Record.push_back(D->isVariadic()); 1082 Record.push_back(D->blockMissingReturnType()); 1083 Record.push_back(D->isConversionFromLambda()); 1084 Record.push_back(D->capturesCXXThis()); 1085 Record.push_back(D->getNumCaptures()); 1086 for (const auto &capture : D->captures()) { 1087 Record.AddDeclRef(capture.getVariable()); 1088 1089 unsigned flags = 0; 1090 if (capture.isByRef()) flags |= 1; 1091 if (capture.isNested()) flags |= 2; 1092 if (capture.hasCopyExpr()) flags |= 4; 1093 Record.push_back(flags); 1094 1095 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); 1096 } 1097 1098 Code = serialization::DECL_BLOCK; 1099 } 1100 1101 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 1102 Record.push_back(CD->getNumParams()); 1103 VisitDecl(CD); 1104 Record.push_back(CD->getContextParamPosition()); 1105 Record.push_back(CD->isNothrow() ? 1 : 0); 1106 // Body is stored by VisitCapturedStmt. 1107 for (unsigned I = 0; I < CD->getNumParams(); ++I) 1108 Record.AddDeclRef(CD->getParam(I)); 1109 Code = serialization::DECL_CAPTURED; 1110 } 1111 1112 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1113 VisitDecl(D); 1114 Record.push_back(D->getLanguage()); 1115 Record.AddSourceLocation(D->getExternLoc()); 1116 Record.AddSourceLocation(D->getRBraceLoc()); 1117 Code = serialization::DECL_LINKAGE_SPEC; 1118 } 1119 1120 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { 1121 VisitDecl(D); 1122 Record.AddSourceLocation(D->getRBraceLoc()); 1123 Code = serialization::DECL_EXPORT; 1124 } 1125 1126 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 1127 VisitNamedDecl(D); 1128 Record.AddSourceLocation(D->getLocStart()); 1129 Code = serialization::DECL_LABEL; 1130 } 1131 1132 1133 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 1134 VisitRedeclarable(D); 1135 VisitNamedDecl(D); 1136 Record.push_back(D->isInline()); 1137 Record.AddSourceLocation(D->getLocStart()); 1138 Record.AddSourceLocation(D->getRBraceLoc()); 1139 1140 if (D->isOriginalNamespace()) 1141 Record.AddDeclRef(D->getAnonymousNamespace()); 1142 Code = serialization::DECL_NAMESPACE; 1143 1144 if (Writer.hasChain() && D->isAnonymousNamespace() && 1145 D == D->getMostRecentDecl()) { 1146 // This is a most recent reopening of the anonymous namespace. If its parent 1147 // is in a previous PCH (or is the TU), mark that parent for update, because 1148 // the original namespace always points to the latest re-opening of its 1149 // anonymous namespace. 1150 Decl *Parent = cast<Decl>( 1151 D->getParent()->getRedeclContext()->getPrimaryContext()); 1152 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1153 Writer.DeclUpdates[Parent].push_back( 1154 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1155 } 1156 } 1157 } 1158 1159 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1160 VisitRedeclarable(D); 1161 VisitNamedDecl(D); 1162 Record.AddSourceLocation(D->getNamespaceLoc()); 1163 Record.AddSourceLocation(D->getTargetNameLoc()); 1164 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1165 Record.AddDeclRef(D->getNamespace()); 1166 Code = serialization::DECL_NAMESPACE_ALIAS; 1167 } 1168 1169 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1170 VisitNamedDecl(D); 1171 Record.AddSourceLocation(D->getUsingLoc()); 1172 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1173 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1174 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1175 Record.push_back(D->hasTypename()); 1176 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); 1177 Code = serialization::DECL_USING; 1178 } 1179 1180 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { 1181 Record.push_back(D->NumExpansions); 1182 VisitNamedDecl(D); 1183 Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); 1184 for (auto *E : D->expansions()) 1185 Record.AddDeclRef(E); 1186 Code = serialization::DECL_USING_PACK; 1187 } 1188 1189 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1190 VisitRedeclarable(D); 1191 VisitNamedDecl(D); 1192 Record.AddDeclRef(D->getTargetDecl()); 1193 Record.AddDeclRef(D->UsingOrNextShadow); 1194 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); 1195 Code = serialization::DECL_USING_SHADOW; 1196 } 1197 1198 void ASTDeclWriter::VisitConstructorUsingShadowDecl( 1199 ConstructorUsingShadowDecl *D) { 1200 VisitUsingShadowDecl(D); 1201 Record.AddDeclRef(D->NominatedBaseClassShadowDecl); 1202 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); 1203 Record.push_back(D->IsVirtual); 1204 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; 1205 } 1206 1207 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1208 VisitNamedDecl(D); 1209 Record.AddSourceLocation(D->getUsingLoc()); 1210 Record.AddSourceLocation(D->getNamespaceKeyLocation()); 1211 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1212 Record.AddDeclRef(D->getNominatedNamespace()); 1213 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); 1214 Code = serialization::DECL_USING_DIRECTIVE; 1215 } 1216 1217 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1218 VisitValueDecl(D); 1219 Record.AddSourceLocation(D->getUsingLoc()); 1220 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1221 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1222 Record.AddSourceLocation(D->getEllipsisLoc()); 1223 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1224 } 1225 1226 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1227 UnresolvedUsingTypenameDecl *D) { 1228 VisitTypeDecl(D); 1229 Record.AddSourceLocation(D->getTypenameLoc()); 1230 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1231 Record.AddSourceLocation(D->getEllipsisLoc()); 1232 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1233 } 1234 1235 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1236 VisitRecordDecl(D); 1237 1238 enum { 1239 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 1240 }; 1241 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1242 Record.push_back(CXXRecTemplate); 1243 Record.AddDeclRef(TemplD); 1244 } else if (MemberSpecializationInfo *MSInfo 1245 = D->getMemberSpecializationInfo()) { 1246 Record.push_back(CXXRecMemberSpecialization); 1247 Record.AddDeclRef(MSInfo->getInstantiatedFrom()); 1248 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1249 Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); 1250 } else { 1251 Record.push_back(CXXRecNotTemplate); 1252 } 1253 1254 Record.push_back(D->isThisDeclarationADefinition()); 1255 if (D->isThisDeclarationADefinition()) 1256 Record.AddCXXDefinitionData(D); 1257 1258 // Store (what we currently believe to be) the key function to avoid 1259 // deserializing every method so we can compute it. 1260 if (D->IsCompleteDefinition) 1261 Record.AddDeclRef(Context.getCurrentKeyFunction(D)); 1262 1263 Code = serialization::DECL_CXX_RECORD; 1264 } 1265 1266 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1267 VisitFunctionDecl(D); 1268 if (D->isCanonicalDecl()) { 1269 Record.push_back(D->size_overridden_methods()); 1270 for (CXXMethodDecl::method_iterator 1271 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 1272 I != E; ++I) 1273 Record.AddDeclRef(*I); 1274 } else { 1275 // We only need to record overridden methods once for the canonical decl. 1276 Record.push_back(0); 1277 } 1278 1279 if (D->getDeclContext() == D->getLexicalDeclContext() && 1280 D->getFirstDecl() == D->getMostRecentDecl() && 1281 !D->isInvalidDecl() && 1282 !D->hasAttrs() && 1283 !D->isTopLevelDeclInObjCContainer() && 1284 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1285 !D->hasExtInfo() && 1286 !D->hasInheritedPrototype() && 1287 D->hasWrittenPrototype()) 1288 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); 1289 1290 Code = serialization::DECL_CXX_METHOD; 1291 } 1292 1293 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1294 if (auto Inherited = D->getInheritedConstructor()) { 1295 Record.AddDeclRef(Inherited.getShadowDecl()); 1296 Record.AddDeclRef(Inherited.getConstructor()); 1297 Code = serialization::DECL_CXX_INHERITED_CONSTRUCTOR; 1298 } else { 1299 Code = serialization::DECL_CXX_CONSTRUCTOR; 1300 } 1301 1302 VisitCXXMethodDecl(D); 1303 1304 Code = D->isInheritingConstructor() 1305 ? serialization::DECL_CXX_INHERITED_CONSTRUCTOR 1306 : serialization::DECL_CXX_CONSTRUCTOR; 1307 } 1308 1309 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1310 VisitCXXMethodDecl(D); 1311 1312 Record.AddDeclRef(D->getOperatorDelete()); 1313 if (D->getOperatorDelete()) 1314 Record.AddStmt(D->getOperatorDeleteThisArg()); 1315 1316 Code = serialization::DECL_CXX_DESTRUCTOR; 1317 } 1318 1319 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1320 VisitCXXMethodDecl(D); 1321 Code = serialization::DECL_CXX_CONVERSION; 1322 } 1323 1324 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1325 VisitDecl(D); 1326 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1327 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1328 Record.push_back(!IdentifierLocs.empty()); 1329 if (IdentifierLocs.empty()) { 1330 Record.AddSourceLocation(D->getLocEnd()); 1331 Record.push_back(1); 1332 } else { 1333 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1334 Record.AddSourceLocation(IdentifierLocs[I]); 1335 Record.push_back(IdentifierLocs.size()); 1336 } 1337 // Note: the number of source locations must always be the last element in 1338 // the record. 1339 Code = serialization::DECL_IMPORT; 1340 } 1341 1342 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1343 VisitDecl(D); 1344 Record.AddSourceLocation(D->getColonLoc()); 1345 Code = serialization::DECL_ACCESS_SPEC; 1346 } 1347 1348 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1349 // Record the number of friend type template parameter lists here 1350 // so as to simplify memory allocation during deserialization. 1351 Record.push_back(D->NumTPLists); 1352 VisitDecl(D); 1353 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1354 Record.push_back(hasFriendDecl); 1355 if (hasFriendDecl) 1356 Record.AddDeclRef(D->getFriendDecl()); 1357 else 1358 Record.AddTypeSourceInfo(D->getFriendType()); 1359 for (unsigned i = 0; i < D->NumTPLists; ++i) 1360 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); 1361 Record.AddDeclRef(D->getNextFriend()); 1362 Record.push_back(D->UnsupportedFriend); 1363 Record.AddSourceLocation(D->FriendLoc); 1364 Code = serialization::DECL_FRIEND; 1365 } 1366 1367 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1368 VisitDecl(D); 1369 Record.push_back(D->getNumTemplateParameters()); 1370 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1371 Record.AddTemplateParameterList(D->getTemplateParameterList(i)); 1372 Record.push_back(D->getFriendDecl() != nullptr); 1373 if (D->getFriendDecl()) 1374 Record.AddDeclRef(D->getFriendDecl()); 1375 else 1376 Record.AddTypeSourceInfo(D->getFriendType()); 1377 Record.AddSourceLocation(D->getFriendLoc()); 1378 Code = serialization::DECL_FRIEND_TEMPLATE; 1379 } 1380 1381 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1382 VisitNamedDecl(D); 1383 1384 Record.AddDeclRef(D->getTemplatedDecl()); 1385 Record.AddTemplateParameterList(D->getTemplateParameters()); 1386 } 1387 1388 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1389 VisitRedeclarable(D); 1390 1391 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1392 // getCommonPtr() can be used while this is still initializing. 1393 if (D->isFirstDecl()) { 1394 // This declaration owns the 'common' pointer, so serialize that data now. 1395 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); 1396 if (D->getInstantiatedFromMemberTemplate()) 1397 Record.push_back(D->isMemberSpecialization()); 1398 } 1399 1400 VisitTemplateDecl(D); 1401 Record.push_back(D->getIdentifierNamespace()); 1402 } 1403 1404 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1405 VisitRedeclarableTemplateDecl(D); 1406 1407 if (D->isFirstDecl()) 1408 AddTemplateSpecializations(D); 1409 Code = serialization::DECL_CLASS_TEMPLATE; 1410 } 1411 1412 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1413 ClassTemplateSpecializationDecl *D) { 1414 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1415 1416 VisitCXXRecordDecl(D); 1417 1418 llvm::PointerUnion<ClassTemplateDecl *, 1419 ClassTemplatePartialSpecializationDecl *> InstFrom 1420 = D->getSpecializedTemplateOrPartial(); 1421 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1422 Record.AddDeclRef(InstFromD); 1423 } else { 1424 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); 1425 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1426 } 1427 1428 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1429 Record.AddSourceLocation(D->getPointOfInstantiation()); 1430 Record.push_back(D->getSpecializationKind()); 1431 Record.push_back(D->isCanonicalDecl()); 1432 1433 if (D->isCanonicalDecl()) { 1434 // When reading, we'll add it to the folding set of the following template. 1435 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1436 } 1437 1438 // Explicit info. 1439 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1440 if (D->getTypeAsWritten()) { 1441 Record.AddSourceLocation(D->getExternLoc()); 1442 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1443 } 1444 1445 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1446 } 1447 1448 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1449 ClassTemplatePartialSpecializationDecl *D) { 1450 VisitClassTemplateSpecializationDecl(D); 1451 1452 Record.AddTemplateParameterList(D->getTemplateParameters()); 1453 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1454 1455 // These are read/set from/to the first declaration. 1456 if (D->getPreviousDecl() == nullptr) { 1457 Record.AddDeclRef(D->getInstantiatedFromMember()); 1458 Record.push_back(D->isMemberSpecialization()); 1459 } 1460 1461 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1462 } 1463 1464 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1465 VisitRedeclarableTemplateDecl(D); 1466 1467 if (D->isFirstDecl()) 1468 AddTemplateSpecializations(D); 1469 Code = serialization::DECL_VAR_TEMPLATE; 1470 } 1471 1472 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1473 VarTemplateSpecializationDecl *D) { 1474 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1475 1476 VisitVarDecl(D); 1477 1478 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1479 InstFrom = D->getSpecializedTemplateOrPartial(); 1480 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1481 Record.AddDeclRef(InstFromD); 1482 } else { 1483 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); 1484 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1485 } 1486 1487 // Explicit info. 1488 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1489 if (D->getTypeAsWritten()) { 1490 Record.AddSourceLocation(D->getExternLoc()); 1491 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1492 } 1493 1494 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1495 Record.AddSourceLocation(D->getPointOfInstantiation()); 1496 Record.push_back(D->getSpecializationKind()); 1497 Record.push_back(D->isCanonicalDecl()); 1498 1499 if (D->isCanonicalDecl()) { 1500 // When reading, we'll add it to the folding set of the following template. 1501 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1502 } 1503 1504 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1505 } 1506 1507 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1508 VarTemplatePartialSpecializationDecl *D) { 1509 VisitVarTemplateSpecializationDecl(D); 1510 1511 Record.AddTemplateParameterList(D->getTemplateParameters()); 1512 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1513 1514 // These are read/set from/to the first declaration. 1515 if (D->getPreviousDecl() == nullptr) { 1516 Record.AddDeclRef(D->getInstantiatedFromMember()); 1517 Record.push_back(D->isMemberSpecialization()); 1518 } 1519 1520 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1521 } 1522 1523 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1524 ClassScopeFunctionSpecializationDecl *D) { 1525 VisitDecl(D); 1526 Record.AddDeclRef(D->getSpecialization()); 1527 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1528 } 1529 1530 1531 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1532 VisitRedeclarableTemplateDecl(D); 1533 1534 if (D->isFirstDecl()) 1535 AddTemplateSpecializations(D); 1536 Code = serialization::DECL_FUNCTION_TEMPLATE; 1537 } 1538 1539 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1540 VisitTypeDecl(D); 1541 1542 Record.push_back(D->wasDeclaredWithTypename()); 1543 1544 bool OwnsDefaultArg = D->hasDefaultArgument() && 1545 !D->defaultArgumentWasInherited(); 1546 Record.push_back(OwnsDefaultArg); 1547 if (OwnsDefaultArg) 1548 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo()); 1549 1550 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1551 } 1552 1553 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1554 // For an expanded parameter pack, record the number of expansion types here 1555 // so that it's easier for deserialization to allocate the right amount of 1556 // memory. 1557 if (D->isExpandedParameterPack()) 1558 Record.push_back(D->getNumExpansionTypes()); 1559 1560 VisitDeclaratorDecl(D); 1561 // TemplateParmPosition. 1562 Record.push_back(D->getDepth()); 1563 Record.push_back(D->getPosition()); 1564 1565 if (D->isExpandedParameterPack()) { 1566 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1567 Record.AddTypeRef(D->getExpansionType(I)); 1568 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); 1569 } 1570 1571 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1572 } else { 1573 // Rest of NonTypeTemplateParmDecl. 1574 Record.push_back(D->isParameterPack()); 1575 bool OwnsDefaultArg = D->hasDefaultArgument() && 1576 !D->defaultArgumentWasInherited(); 1577 Record.push_back(OwnsDefaultArg); 1578 if (OwnsDefaultArg) 1579 Record.AddStmt(D->getDefaultArgument()); 1580 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1581 } 1582 } 1583 1584 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1585 // For an expanded parameter pack, record the number of expansion types here 1586 // so that it's easier for deserialization to allocate the right amount of 1587 // memory. 1588 if (D->isExpandedParameterPack()) 1589 Record.push_back(D->getNumExpansionTemplateParameters()); 1590 1591 VisitTemplateDecl(D); 1592 // TemplateParmPosition. 1593 Record.push_back(D->getDepth()); 1594 Record.push_back(D->getPosition()); 1595 1596 if (D->isExpandedParameterPack()) { 1597 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1598 I != N; ++I) 1599 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); 1600 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1601 } else { 1602 // Rest of TemplateTemplateParmDecl. 1603 Record.push_back(D->isParameterPack()); 1604 bool OwnsDefaultArg = D->hasDefaultArgument() && 1605 !D->defaultArgumentWasInherited(); 1606 Record.push_back(OwnsDefaultArg); 1607 if (OwnsDefaultArg) 1608 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1609 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1610 } 1611 } 1612 1613 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1614 VisitRedeclarableTemplateDecl(D); 1615 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1616 } 1617 1618 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1619 VisitDecl(D); 1620 Record.AddStmt(D->getAssertExpr()); 1621 Record.push_back(D->isFailed()); 1622 Record.AddStmt(D->getMessage()); 1623 Record.AddSourceLocation(D->getRParenLoc()); 1624 Code = serialization::DECL_STATIC_ASSERT; 1625 } 1626 1627 /// \brief Emit the DeclContext part of a declaration context decl. 1628 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { 1629 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC)); 1630 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC)); 1631 } 1632 1633 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { 1634 assert(IsLocalDecl(D) && "expected a local declaration"); 1635 1636 const Decl *Canon = D->getCanonicalDecl(); 1637 if (IsLocalDecl(Canon)) 1638 return Canon; 1639 1640 const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; 1641 if (CacheEntry) 1642 return CacheEntry; 1643 1644 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) 1645 if (IsLocalDecl(Redecl)) 1646 D = Redecl; 1647 return CacheEntry = D; 1648 } 1649 1650 template <typename T> 1651 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1652 T *First = D->getFirstDecl(); 1653 T *MostRecent = First->getMostRecentDecl(); 1654 T *DAsT = static_cast<T *>(D); 1655 if (MostRecent != First) { 1656 assert(isRedeclarableDeclKind(DAsT->getKind()) && 1657 "Not considered redeclarable?"); 1658 1659 Record.AddDeclRef(First); 1660 1661 // Write out a list of local redeclarations of this declaration if it's the 1662 // first local declaration in the chain. 1663 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); 1664 if (DAsT == FirstLocal) { 1665 // Emit a list of all imported first declarations so that we can be sure 1666 // that all redeclarations visible to this module are before D in the 1667 // redecl chain. 1668 unsigned I = Record.size(); 1669 Record.push_back(0); 1670 if (Writer.Chain) 1671 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); 1672 // This is the number of imported first declarations + 1. 1673 Record[I] = Record.size() - I; 1674 1675 // Collect the set of local redeclarations of this declaration, from 1676 // newest to oldest. 1677 ASTWriter::RecordData LocalRedecls; 1678 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); 1679 for (const Decl *Prev = FirstLocal->getMostRecentDecl(); 1680 Prev != FirstLocal; Prev = Prev->getPreviousDecl()) 1681 if (!Prev->isFromASTFile()) 1682 LocalRedeclWriter.AddDeclRef(Prev); 1683 1684 // If we have any redecls, write them now as a separate record preceding 1685 // the declaration itself. 1686 if (LocalRedecls.empty()) 1687 Record.push_back(0); 1688 else 1689 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); 1690 } else { 1691 Record.push_back(0); 1692 Record.AddDeclRef(FirstLocal); 1693 } 1694 1695 // Make sure that we serialize both the previous and the most-recent 1696 // declarations, which (transitively) ensures that all declarations in the 1697 // chain get serialized. 1698 // 1699 // FIXME: This is not correct; when we reach an imported declaration we 1700 // won't emit its previous declaration. 1701 (void)Writer.GetDeclRef(D->getPreviousDecl()); 1702 (void)Writer.GetDeclRef(MostRecent); 1703 } else { 1704 // We use the sentinel value 0 to indicate an only declaration. 1705 Record.push_back(0); 1706 } 1707 } 1708 1709 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1710 Record.push_back(D->varlist_size()); 1711 VisitDecl(D); 1712 for (auto *I : D->varlists()) 1713 Record.AddStmt(I); 1714 Code = serialization::DECL_OMP_THREADPRIVATE; 1715 } 1716 1717 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { 1718 VisitValueDecl(D); 1719 Record.AddSourceLocation(D->getLocStart()); 1720 Record.AddStmt(D->getCombiner()); 1721 Record.AddStmt(D->getInitializer()); 1722 Record.push_back(D->getInitializerKind()); 1723 Record.AddDeclRef(D->getPrevDeclInScope()); 1724 Code = serialization::DECL_OMP_DECLARE_REDUCTION; 1725 } 1726 1727 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { 1728 VisitVarDecl(D); 1729 Code = serialization::DECL_OMP_CAPTUREDEXPR; 1730 } 1731 1732 //===----------------------------------------------------------------------===// 1733 // ASTWriter Implementation 1734 //===----------------------------------------------------------------------===// 1735 1736 void ASTWriter::WriteDeclAbbrevs() { 1737 using namespace llvm; 1738 1739 std::shared_ptr<BitCodeAbbrev> Abv; 1740 1741 // Abbreviation for DECL_FIELD 1742 Abv = std::make_shared<BitCodeAbbrev>(); 1743 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1744 // Decl 1745 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1746 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1747 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1748 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1749 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1750 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1751 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1752 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1753 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1754 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1755 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1756 // NamedDecl 1757 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1758 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1759 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1760 // ValueDecl 1761 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1762 // DeclaratorDecl 1763 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1764 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1765 // FieldDecl 1766 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1767 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1768 // Type Source Info 1769 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1770 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1771 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1772 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1773 1774 // Abbreviation for DECL_OBJC_IVAR 1775 Abv = std::make_shared<BitCodeAbbrev>(); 1776 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1777 // Decl 1778 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1779 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1780 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1781 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1782 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1783 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1784 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1785 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1786 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1787 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1788 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1789 // NamedDecl 1790 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1791 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1792 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1793 // ValueDecl 1794 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1795 // DeclaratorDecl 1796 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1797 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1798 // FieldDecl 1799 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1800 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1801 // ObjC Ivar 1802 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1803 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1804 // Type Source Info 1805 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1806 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1807 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1808 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1809 1810 // Abbreviation for DECL_ENUM 1811 Abv = std::make_shared<BitCodeAbbrev>(); 1812 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1813 // Redeclarable 1814 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1815 // Decl 1816 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1817 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1818 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1819 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1820 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1821 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1822 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1823 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1824 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1825 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1826 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1827 // NamedDecl 1828 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1829 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1830 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1831 // TypeDecl 1832 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1833 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1834 // TagDecl 1835 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1836 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1837 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1838 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1839 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1840 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1841 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1842 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1843 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1844 // EnumDecl 1845 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1846 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1847 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1848 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1851 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1853 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1854 // DC 1855 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1856 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1857 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1858 1859 // Abbreviation for DECL_RECORD 1860 Abv = std::make_shared<BitCodeAbbrev>(); 1861 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1862 // Redeclarable 1863 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1864 // Decl 1865 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1866 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1867 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1868 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1869 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1870 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1871 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1872 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1873 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1874 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1875 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1876 // NamedDecl 1877 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1878 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1879 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1880 // TypeDecl 1881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1882 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1883 // TagDecl 1884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1886 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1887 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1889 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1890 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1891 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1892 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1893 // RecordDecl 1894 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 1898 // DC 1899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1901 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1902 1903 // Abbreviation for DECL_PARM_VAR 1904 Abv = std::make_shared<BitCodeAbbrev>(); 1905 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1906 // Redeclarable 1907 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1908 // Decl 1909 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1910 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1911 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1912 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1913 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1914 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1915 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1916 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1917 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1918 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1919 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1920 // NamedDecl 1921 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1922 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1923 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1924 // ValueDecl 1925 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1926 // DeclaratorDecl 1927 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1928 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1929 // VarDecl 1930 Abv->Add(BitCodeAbbrevOp(0)); // SClass 1931 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec 1932 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1933 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 1934 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1935 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1936 // ParmVarDecl 1937 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1938 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1939 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1940 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1941 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1942 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1943 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1944 // Type Source Info 1945 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1946 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1947 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1948 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1949 1950 // Abbreviation for DECL_TYPEDEF 1951 Abv = std::make_shared<BitCodeAbbrev>(); 1952 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1953 // Redeclarable 1954 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1955 // Decl 1956 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1957 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1958 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1959 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1960 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1961 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 1962 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 1963 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1964 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 1965 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1966 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1967 // NamedDecl 1968 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1969 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1970 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1971 // TypeDecl 1972 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1973 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1974 // TypedefDecl 1975 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1976 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1977 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1978 1979 // Abbreviation for DECL_VAR 1980 Abv = std::make_shared<BitCodeAbbrev>(); 1981 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1982 // Redeclarable 1983 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1984 // Decl 1985 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1986 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1987 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1988 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1989 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1990 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1991 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1992 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1993 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1994 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1995 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1996 // NamedDecl 1997 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1998 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1999 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2000 // ValueDecl 2001 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2002 // DeclaratorDecl 2003 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2004 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2005 // VarDecl 2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass 2007 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec 2008 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle 2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition 2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 2011 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 2012 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 2013 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 2014 Abv->Add(BitCodeAbbrevOp(0)); // isInline 2015 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified 2016 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 2017 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 2018 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 2019 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind 2020 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2021 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // IsInitICE (local) 2022 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum) 2023 // Type Source Info 2024 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2026 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2027 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2028 2029 // Abbreviation for DECL_CXX_METHOD 2030 Abv = std::make_shared<BitCodeAbbrev>(); 2031 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 2032 // RedeclarableDecl 2033 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 2034 // Decl 2035 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2036 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2037 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 2038 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2039 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 2040 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 2041 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 2042 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 2043 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate 2045 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2046 // NamedDecl 2047 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 2048 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 2049 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2050 // ValueDecl 2051 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2052 // DeclaratorDecl 2053 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 2054 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 2055 // FunctionDecl 2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 2058 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitSpecified 2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 2062 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 2063 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 2064 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 2068 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 2069 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr 2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry 2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 2073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 2074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 2076 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind 2077 // This Array slurps the rest of the record. Fortunately we want to encode 2078 // (nearly) all the remaining (variable number of) fields in the same way. 2079 // 2080 // This is the function template information if any, then 2081 // NumParams and Params[] from FunctionDecl, and 2082 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 2083 // 2084 // Add an AbbrevOp for 'size then elements' and use it here. 2085 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2086 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2087 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2088 2089 // Abbreviation for EXPR_DECL_REF 2090 Abv = std::make_shared<BitCodeAbbrev>(); 2091 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 2092 //Stmt 2093 //Expr 2094 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2095 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2096 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2097 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2099 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2100 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2101 //DeclRefExpr 2102 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 2103 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 2104 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 2106 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2107 1)); // RefersToEnclosingVariableOrCapture 2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 2109 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2110 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2111 2112 // Abbreviation for EXPR_INTEGER_LITERAL 2113 Abv = std::make_shared<BitCodeAbbrev>(); 2114 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 2115 //Stmt 2116 //Expr 2117 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2118 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2119 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2120 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2121 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2123 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2124 //Integer Literal 2125 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2126 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 2127 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 2128 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2129 2130 // Abbreviation for EXPR_CHARACTER_LITERAL 2131 Abv = std::make_shared<BitCodeAbbrev>(); 2132 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 2133 //Stmt 2134 //Expr 2135 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2137 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2138 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2139 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2140 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2141 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2142 //Character Literal 2143 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 2144 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2145 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind 2146 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2147 2148 // Abbreviation for EXPR_IMPLICIT_CAST 2149 Abv = std::make_shared<BitCodeAbbrev>(); 2150 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 2151 // Stmt 2152 // Expr 2153 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2154 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2155 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2156 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2157 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2159 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2160 // CastExpr 2161 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 2162 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 2163 // ImplicitCastExpr 2164 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2165 2166 Abv = std::make_shared<BitCodeAbbrev>(); 2167 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 2168 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2169 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2170 2171 Abv = std::make_shared<BitCodeAbbrev>(); 2172 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 2173 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2174 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2175 } 2176 2177 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 2178 /// consumers of the AST. 2179 /// 2180 /// Such decls will always be deserialized from the AST file, so we would like 2181 /// this to be as restrictive as possible. Currently the predicate is driven by 2182 /// code generation requirements, if other clients have a different notion of 2183 /// what is "required" then we may have to consider an alternate scheme where 2184 /// clients can iterate over the top-level decls and get information on them, 2185 /// without necessary deserializing them. We could explicitly require such 2186 /// clients to use a separate API call to "realize" the decl. This should be 2187 /// relatively painless since they would presumably only do it for top-level 2188 /// decls. 2189 static bool isRequiredDecl(const Decl *D, ASTContext &Context, 2190 bool WritingModule) { 2191 // An ObjCMethodDecl is never considered as "required" because its 2192 // implementation container always is. 2193 2194 // File scoped assembly or obj-c or OMP declare target implementation must be 2195 // seen. 2196 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || 2197 D->hasAttr<OMPDeclareTargetDeclAttr>()) 2198 return true; 2199 2200 if (WritingModule && (isa<VarDecl>(D) || isa<ImportDecl>(D))) { 2201 // These declarations are part of the module initializer, and are emitted 2202 // if and when the module is imported, rather than being emitted eagerly. 2203 return false; 2204 } 2205 2206 return Context.DeclMustBeEmitted(D); 2207 } 2208 2209 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2210 // Determine the ID for this declaration. 2211 serialization::DeclID ID; 2212 assert(!D->isFromASTFile() && "should not be emitting imported decl"); 2213 serialization::DeclID &IDR = DeclIDs[D]; 2214 if (IDR == 0) 2215 IDR = NextDeclID++; 2216 2217 ID = IDR; 2218 2219 assert(ID >= FirstDeclID && "invalid decl ID"); 2220 2221 RecordData Record; 2222 ASTDeclWriter W(*this, Context, Record); 2223 2224 // Build a record for this declaration 2225 W.Visit(D); 2226 2227 // Emit this declaration to the bitstream. 2228 uint64_t Offset = W.Emit(D); 2229 2230 // Record the offset for this declaration 2231 SourceLocation Loc = D->getLocation(); 2232 unsigned Index = ID - FirstDeclID; 2233 if (DeclOffsets.size() == Index) 2234 DeclOffsets.push_back(DeclOffset(Loc, Offset)); 2235 else if (DeclOffsets.size() < Index) { 2236 // FIXME: Can/should this happen? 2237 DeclOffsets.resize(Index+1); 2238 DeclOffsets[Index].setLocation(Loc); 2239 DeclOffsets[Index].BitOffset = Offset; 2240 } else { 2241 llvm_unreachable("declarations should be emitted in ID order"); 2242 } 2243 2244 SourceManager &SM = Context.getSourceManager(); 2245 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2246 associateDeclWithFile(D, ID); 2247 2248 // Note declarations that should be deserialized eagerly so that we can add 2249 // them to a record in the AST file later. 2250 if (isRequiredDecl(D, Context, WritingModule)) 2251 EagerlyDeserializedDecls.push_back(ID); 2252 } 2253 2254 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { 2255 // Switch case IDs are per function body. 2256 Writer->ClearSwitchCaseIDs(); 2257 2258 assert(FD->doesThisDeclarationHaveABody()); 2259 bool ModulesCodegen = false; 2260 if (Writer->WritingModule && !FD->isDependentContext()) { 2261 // Under -fmodules-codegen, codegen is performed for all defined functions. 2262 // When building a C++ Modules TS module interface unit, a strong definition 2263 // in the module interface is provided by the compilation of that module 2264 // interface unit, not by its users. (Inline functions are still emitted 2265 // in module users.) 2266 ModulesCodegen = 2267 Writer->Context->getLangOpts().ModulesCodegen || 2268 (Writer->WritingModule->Kind == Module::ModuleInterfaceUnit && 2269 Writer->Context->GetGVALinkageForFunction(FD) == GVA_StrongExternal); 2270 } 2271 Record->push_back(ModulesCodegen); 2272 if (ModulesCodegen) 2273 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD)); 2274 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 2275 Record->push_back(CD->getNumCtorInitializers()); 2276 if (CD->getNumCtorInitializers()) 2277 AddCXXCtorInitializers( 2278 llvm::makeArrayRef(CD->init_begin(), CD->init_end())); 2279 } 2280 AddStmt(FD->getBody()); 2281 } 2282