1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements serialization for Declarations. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Serialization/ASTWriter.h" 15 #include "clang/Serialization/ASTReader.h" 16 #include "ASTCommon.h" 17 #include "clang/AST/DeclVisitor.h" 18 #include "clang/AST/DeclCXX.h" 19 #include "clang/AST/DeclTemplate.h" 20 #include "clang/AST/Expr.h" 21 #include "clang/AST/DeclContextInternals.h" 22 #include "clang/Basic/SourceManager.h" 23 #include "llvm/ADT/Twine.h" 24 #include "llvm/Bitcode/BitstreamWriter.h" 25 #include "llvm/Support/ErrorHandling.h" 26 using namespace clang; 27 using namespace serialization; 28 29 //===----------------------------------------------------------------------===// 30 // Declaration serialization 31 //===----------------------------------------------------------------------===// 32 33 namespace clang { 34 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 35 36 ASTWriter &Writer; 37 ASTContext &Context; 38 typedef ASTWriter::RecordData RecordData; 39 RecordData &Record; 40 41 public: 42 serialization::DeclCode Code; 43 unsigned AbbrevToUse; 44 45 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, RecordData &Record) 46 : Writer(Writer), Context(Context), Record(Record) { 47 } 48 49 void Visit(Decl *D); 50 51 void VisitDecl(Decl *D); 52 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 53 void VisitNamedDecl(NamedDecl *D); 54 void VisitLabelDecl(LabelDecl *LD); 55 void VisitNamespaceDecl(NamespaceDecl *D); 56 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 57 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 58 void VisitTypeDecl(TypeDecl *D); 59 void VisitTypedefNameDecl(TypedefNameDecl *D); 60 void VisitTypedefDecl(TypedefDecl *D); 61 void VisitTypeAliasDecl(TypeAliasDecl *D); 62 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 63 void VisitTagDecl(TagDecl *D); 64 void VisitEnumDecl(EnumDecl *D); 65 void VisitRecordDecl(RecordDecl *D); 66 void VisitCXXRecordDecl(CXXRecordDecl *D); 67 void VisitClassTemplateSpecializationDecl( 68 ClassTemplateSpecializationDecl *D); 69 void VisitClassTemplatePartialSpecializationDecl( 70 ClassTemplatePartialSpecializationDecl *D); 71 void VisitClassScopeFunctionSpecializationDecl( 72 ClassScopeFunctionSpecializationDecl *D); 73 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 74 void VisitValueDecl(ValueDecl *D); 75 void VisitEnumConstantDecl(EnumConstantDecl *D); 76 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 77 void VisitDeclaratorDecl(DeclaratorDecl *D); 78 void VisitFunctionDecl(FunctionDecl *D); 79 void VisitCXXMethodDecl(CXXMethodDecl *D); 80 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 81 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 82 void VisitCXXConversionDecl(CXXConversionDecl *D); 83 void VisitFieldDecl(FieldDecl *D); 84 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 85 void VisitVarDecl(VarDecl *D); 86 void VisitImplicitParamDecl(ImplicitParamDecl *D); 87 void VisitParmVarDecl(ParmVarDecl *D); 88 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 89 void VisitTemplateDecl(TemplateDecl *D); 90 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 91 void VisitClassTemplateDecl(ClassTemplateDecl *D); 92 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 93 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 94 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 95 void VisitUsingDecl(UsingDecl *D); 96 void VisitUsingShadowDecl(UsingShadowDecl *D); 97 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 98 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 99 void VisitImportDecl(ImportDecl *D); 100 void VisitAccessSpecDecl(AccessSpecDecl *D); 101 void VisitFriendDecl(FriendDecl *D); 102 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 103 void VisitStaticAssertDecl(StaticAssertDecl *D); 104 void VisitBlockDecl(BlockDecl *D); 105 106 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 107 uint64_t VisibleOffset); 108 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 109 110 111 // FIXME: Put in the same order is DeclNodes.td? 112 void VisitObjCMethodDecl(ObjCMethodDecl *D); 113 void VisitObjCContainerDecl(ObjCContainerDecl *D); 114 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 115 void VisitObjCIvarDecl(ObjCIvarDecl *D); 116 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 117 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 118 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 119 void VisitObjCImplDecl(ObjCImplDecl *D); 120 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 121 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 122 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 123 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 124 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 125 }; 126 } 127 128 void ASTDeclWriter::Visit(Decl *D) { 129 DeclVisitor<ASTDeclWriter>::Visit(D); 130 131 // Source locations require array (variable-length) abbreviations. The 132 // abbreviation infrastructure requires that arrays are encoded last, so 133 // we handle it here in the case of those classes derived from DeclaratorDecl 134 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)){ 135 Writer.AddTypeSourceInfo(DD->getTypeSourceInfo(), Record); 136 } 137 138 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 139 // have been written. We want it last because we will not read it back when 140 // retrieving it from the AST, we'll just lazily set the offset. 141 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 142 Record.push_back(FD->doesThisDeclarationHaveABody()); 143 if (FD->doesThisDeclarationHaveABody()) 144 Writer.AddStmt(FD->getBody()); 145 } 146 } 147 148 void ASTDeclWriter::VisitDecl(Decl *D) { 149 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 150 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 151 Record.push_back(D->isInvalidDecl()); 152 Record.push_back(D->hasAttrs()); 153 if (D->hasAttrs()) 154 Writer.WriteAttributes(D->getAttrs(), Record); 155 Record.push_back(D->isImplicit()); 156 Record.push_back(D->isUsed(false)); 157 Record.push_back(D->isReferenced()); 158 Record.push_back(D->isTopLevelDeclInObjCContainer()); 159 Record.push_back(D->getAccess()); 160 Record.push_back(D->isModulePrivate()); 161 Record.push_back(Writer.inferSubmoduleIDFromLocation(D->getLocation())); 162 } 163 164 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 165 llvm_unreachable("Translation units aren't directly serialized"); 166 } 167 168 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 169 VisitDecl(D); 170 Writer.AddDeclarationName(D->getDeclName(), Record); 171 } 172 173 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 174 VisitNamedDecl(D); 175 Writer.AddSourceLocation(D->getLocStart(), Record); 176 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 177 } 178 179 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 180 VisitRedeclarable(D); 181 VisitTypeDecl(D); 182 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 183 } 184 185 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 186 VisitTypedefNameDecl(D); 187 if (!D->hasAttrs() && 188 !D->isImplicit() && 189 !D->isUsed(false) && 190 D->getFirstDeclaration() == D->getMostRecentDecl() && 191 !D->isInvalidDecl() && 192 !D->isReferenced() && 193 !D->isTopLevelDeclInObjCContainer() && 194 D->getAccess() == AS_none && 195 !D->isModulePrivate() && 196 D->getDeclName().getNameKind() == DeclarationName::Identifier) 197 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 198 199 Code = serialization::DECL_TYPEDEF; 200 } 201 202 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 203 VisitTypedefNameDecl(D); 204 Code = serialization::DECL_TYPEALIAS; 205 } 206 207 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 208 VisitRedeclarable(D); 209 VisitTypeDecl(D); 210 Record.push_back(D->getIdentifierNamespace()); 211 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 212 Record.push_back(D->isCompleteDefinition()); 213 Record.push_back(D->isEmbeddedInDeclarator()); 214 Record.push_back(D->isFreeStanding()); 215 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 216 Record.push_back(D->hasExtInfo()); 217 if (D->hasExtInfo()) 218 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 219 else 220 Writer.AddDeclRef(D->getTypedefNameForAnonDecl(), Record); 221 } 222 223 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 224 VisitTagDecl(D); 225 Writer.AddTypeSourceInfo(D->getIntegerTypeSourceInfo(), Record); 226 if (!D->getIntegerTypeSourceInfo()) 227 Writer.AddTypeRef(D->getIntegerType(), Record); 228 Writer.AddTypeRef(D->getPromotionType(), Record); 229 Record.push_back(D->getNumPositiveBits()); 230 Record.push_back(D->getNumNegativeBits()); 231 Record.push_back(D->isScoped()); 232 Record.push_back(D->isScopedUsingClassTag()); 233 Record.push_back(D->isFixed()); 234 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 235 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 236 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 237 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 238 } else { 239 Writer.AddDeclRef(0, Record); 240 } 241 242 if (!D->hasAttrs() && 243 !D->isImplicit() && 244 !D->isUsed(false) && 245 !D->hasExtInfo() && 246 D->getFirstDeclaration() == D->getMostRecentDecl() && 247 !D->isInvalidDecl() && 248 !D->isReferenced() && 249 !D->isTopLevelDeclInObjCContainer() && 250 D->getAccess() == AS_none && 251 !D->isModulePrivate() && 252 !CXXRecordDecl::classofKind(D->getKind()) && 253 !D->getIntegerTypeSourceInfo() && 254 D->getDeclName().getNameKind() == DeclarationName::Identifier) 255 AbbrevToUse = Writer.getDeclEnumAbbrev(); 256 257 Code = serialization::DECL_ENUM; 258 } 259 260 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 261 VisitTagDecl(D); 262 Record.push_back(D->hasFlexibleArrayMember()); 263 Record.push_back(D->isAnonymousStructOrUnion()); 264 Record.push_back(D->hasObjectMember()); 265 266 if (!D->hasAttrs() && 267 !D->isImplicit() && 268 !D->isUsed(false) && 269 !D->hasExtInfo() && 270 D->getFirstDeclaration() == D->getMostRecentDecl() && 271 !D->isInvalidDecl() && 272 !D->isReferenced() && 273 !D->isTopLevelDeclInObjCContainer() && 274 D->getAccess() == AS_none && 275 !D->isModulePrivate() && 276 !CXXRecordDecl::classofKind(D->getKind()) && 277 D->getDeclName().getNameKind() == DeclarationName::Identifier) 278 AbbrevToUse = Writer.getDeclRecordAbbrev(); 279 280 Code = serialization::DECL_RECORD; 281 } 282 283 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 284 VisitNamedDecl(D); 285 Writer.AddTypeRef(D->getType(), Record); 286 } 287 288 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 289 VisitValueDecl(D); 290 Record.push_back(D->getInitExpr()? 1 : 0); 291 if (D->getInitExpr()) 292 Writer.AddStmt(D->getInitExpr()); 293 Writer.AddAPSInt(D->getInitVal(), Record); 294 295 Code = serialization::DECL_ENUM_CONSTANT; 296 } 297 298 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 299 VisitValueDecl(D); 300 Writer.AddSourceLocation(D->getInnerLocStart(), Record); 301 Record.push_back(D->hasExtInfo()); 302 if (D->hasExtInfo()) 303 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 304 } 305 306 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 307 VisitRedeclarable(D); 308 VisitDeclaratorDecl(D); 309 310 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 311 Record.push_back(D->getIdentifierNamespace()); 312 313 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 314 // after everything else is written. 315 316 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 317 Record.push_back(D->getStorageClassAsWritten()); 318 Record.push_back(D->IsInline); 319 Record.push_back(D->isInlineSpecified()); 320 Record.push_back(D->isVirtualAsWritten()); 321 Record.push_back(D->isPure()); 322 Record.push_back(D->hasInheritedPrototype()); 323 Record.push_back(D->hasWrittenPrototype()); 324 Record.push_back(D->isDeletedAsWritten()); 325 Record.push_back(D->isTrivial()); 326 Record.push_back(D->isDefaulted()); 327 Record.push_back(D->isExplicitlyDefaulted()); 328 Record.push_back(D->hasImplicitReturnZero()); 329 Record.push_back(D->isConstexpr()); 330 Writer.AddSourceLocation(D->getLocEnd(), Record); 331 332 Record.push_back(D->getTemplatedKind()); 333 switch (D->getTemplatedKind()) { 334 case FunctionDecl::TK_NonTemplate: 335 break; 336 case FunctionDecl::TK_FunctionTemplate: 337 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); 338 break; 339 case FunctionDecl::TK_MemberSpecialization: { 340 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 341 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 342 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 343 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 344 break; 345 } 346 case FunctionDecl::TK_FunctionTemplateSpecialization: { 347 FunctionTemplateSpecializationInfo * 348 FTSInfo = D->getTemplateSpecializationInfo(); 349 Writer.AddDeclRef(FTSInfo->getTemplate(), Record); 350 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 351 352 // Template arguments. 353 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); 354 355 // Template args as written. 356 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != 0); 357 if (FTSInfo->TemplateArgumentsAsWritten) { 358 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 359 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 360 i!=e; ++i) 361 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], 362 Record); 363 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc, 364 Record); 365 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc, 366 Record); 367 } 368 369 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); 370 371 if (D->isCanonicalDecl()) { 372 // Write the template that contains the specializations set. We will 373 // add a FunctionTemplateSpecializationInfo to it when reading. 374 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); 375 } 376 break; 377 } 378 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 379 DependentFunctionTemplateSpecializationInfo * 380 DFTSInfo = D->getDependentSpecializationInfo(); 381 382 // Templates. 383 Record.push_back(DFTSInfo->getNumTemplates()); 384 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 385 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); 386 387 // Templates args. 388 Record.push_back(DFTSInfo->getNumTemplateArgs()); 389 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 390 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); 391 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); 392 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); 393 break; 394 } 395 } 396 397 Record.push_back(D->param_size()); 398 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 399 P != PEnd; ++P) 400 Writer.AddDeclRef(*P, Record); 401 Code = serialization::DECL_FUNCTION; 402 } 403 404 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 405 VisitNamedDecl(D); 406 // FIXME: convert to LazyStmtPtr? 407 // Unlike C/C++, method bodies will never be in header files. 408 bool HasBodyStuff = D->getBody() != 0 || 409 D->getSelfDecl() != 0 || D->getCmdDecl() != 0; 410 Record.push_back(HasBodyStuff); 411 if (HasBodyStuff) { 412 Writer.AddStmt(D->getBody()); 413 Writer.AddDeclRef(D->getSelfDecl(), Record); 414 Writer.AddDeclRef(D->getCmdDecl(), Record); 415 } 416 Record.push_back(D->isInstanceMethod()); 417 Record.push_back(D->isVariadic()); 418 Record.push_back(D->isSynthesized()); 419 Record.push_back(D->isDefined()); 420 421 Record.push_back(D->IsRedeclaration); 422 Record.push_back(D->HasRedeclaration); 423 if (D->HasRedeclaration) { 424 assert(Context.getObjCMethodRedeclaration(D)); 425 Writer.AddDeclRef(Context.getObjCMethodRedeclaration(D), Record); 426 } 427 428 // FIXME: stable encoding for @required/@optional 429 Record.push_back(D->getImplementationControl()); 430 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway 431 Record.push_back(D->getObjCDeclQualifier()); 432 Record.push_back(D->hasRelatedResultType()); 433 Writer.AddTypeRef(D->getResultType(), Record); 434 Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record); 435 Writer.AddSourceLocation(D->getLocEnd(), Record); 436 Record.push_back(D->param_size()); 437 for (ObjCMethodDecl::param_iterator P = D->param_begin(), 438 PEnd = D->param_end(); P != PEnd; ++P) 439 Writer.AddDeclRef(*P, Record); 440 441 Record.push_back(D->SelLocsKind); 442 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 443 SourceLocation *SelLocs = D->getStoredSelLocs(); 444 Record.push_back(NumStoredSelLocs); 445 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 446 Writer.AddSourceLocation(SelLocs[i], Record); 447 448 Code = serialization::DECL_OBJC_METHOD; 449 } 450 451 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 452 VisitNamedDecl(D); 453 Writer.AddSourceLocation(D->getAtStartLoc(), Record); 454 Writer.AddSourceRange(D->getAtEndRange(), Record); 455 // Abstract class (no need to define a stable serialization::DECL code). 456 } 457 458 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 459 VisitRedeclarable(D); 460 VisitObjCContainerDecl(D); 461 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 462 463 Record.push_back(D->isThisDeclarationADefinition()); 464 if (D->isThisDeclarationADefinition()) { 465 // Write the DefinitionData 466 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 467 468 Writer.AddDeclRef(D->getSuperClass(), Record); 469 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 470 Writer.AddSourceLocation(D->getEndOfDefinitionLoc(), Record); 471 472 // Write out the protocols that are directly referenced by the @interface. 473 Record.push_back(Data.ReferencedProtocols.size()); 474 for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), 475 PEnd = D->protocol_end(); 476 P != PEnd; ++P) 477 Writer.AddDeclRef(*P, Record); 478 for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 479 PLEnd = D->protocol_loc_end(); 480 PL != PLEnd; ++PL) 481 Writer.AddSourceLocation(*PL, Record); 482 483 // Write out the protocols that are transitively referenced. 484 Record.push_back(Data.AllReferencedProtocols.size()); 485 for (ObjCList<ObjCProtocolDecl>::iterator 486 P = Data.AllReferencedProtocols.begin(), 487 PEnd = Data.AllReferencedProtocols.end(); 488 P != PEnd; ++P) 489 Writer.AddDeclRef(*P, Record); 490 491 if (ObjCCategoryDecl *Cat = D->getCategoryList()) { 492 // Ensure that we write out the set of categories for this class. 493 Writer.ObjCClassesWithCategories.insert(D); 494 495 // Make sure that the categories get serialized. 496 for (; Cat; Cat = Cat->getNextClassCategory()) 497 (void)Writer.GetDeclRef(Cat); 498 } 499 } 500 501 Code = serialization::DECL_OBJC_INTERFACE; 502 } 503 504 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 505 VisitFieldDecl(D); 506 // FIXME: stable encoding for @public/@private/@protected/@package 507 Record.push_back(D->getAccessControl()); 508 Record.push_back(D->getSynthesize()); 509 510 if (!D->hasAttrs() && 511 !D->isImplicit() && 512 !D->isUsed(false) && 513 !D->isInvalidDecl() && 514 !D->isReferenced() && 515 !D->isModulePrivate() && 516 !D->getBitWidth() && 517 !D->hasExtInfo() && 518 D->getDeclName()) 519 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 520 521 Code = serialization::DECL_OBJC_IVAR; 522 } 523 524 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 525 VisitRedeclarable(D); 526 VisitObjCContainerDecl(D); 527 528 Record.push_back(D->isThisDeclarationADefinition()); 529 if (D->isThisDeclarationADefinition()) { 530 Record.push_back(D->protocol_size()); 531 for (ObjCProtocolDecl::protocol_iterator 532 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 533 Writer.AddDeclRef(*I, Record); 534 for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 535 PLEnd = D->protocol_loc_end(); 536 PL != PLEnd; ++PL) 537 Writer.AddSourceLocation(*PL, Record); 538 } 539 540 Code = serialization::DECL_OBJC_PROTOCOL; 541 } 542 543 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 544 VisitFieldDecl(D); 545 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 546 } 547 548 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 549 VisitObjCContainerDecl(D); 550 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 551 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record); 552 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record); 553 Writer.AddDeclRef(D->getClassInterface(), Record); 554 Record.push_back(D->protocol_size()); 555 for (ObjCCategoryDecl::protocol_iterator 556 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 557 Writer.AddDeclRef(*I, Record); 558 for (ObjCCategoryDecl::protocol_loc_iterator 559 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 560 PL != PLEnd; ++PL) 561 Writer.AddSourceLocation(*PL, Record); 562 Record.push_back(D->hasSynthBitfield()); 563 Code = serialization::DECL_OBJC_CATEGORY; 564 } 565 566 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 567 VisitNamedDecl(D); 568 Writer.AddDeclRef(D->getClassInterface(), Record); 569 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 570 } 571 572 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 573 VisitNamedDecl(D); 574 Writer.AddSourceLocation(D->getAtLoc(), Record); 575 Writer.AddSourceLocation(D->getLParenLoc(), Record); 576 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 577 // FIXME: stable encoding 578 Record.push_back((unsigned)D->getPropertyAttributes()); 579 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 580 // FIXME: stable encoding 581 Record.push_back((unsigned)D->getPropertyImplementation()); 582 Writer.AddDeclarationName(D->getGetterName(), Record); 583 Writer.AddDeclarationName(D->getSetterName(), Record); 584 Writer.AddDeclRef(D->getGetterMethodDecl(), Record); 585 Writer.AddDeclRef(D->getSetterMethodDecl(), Record); 586 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 587 Code = serialization::DECL_OBJC_PROPERTY; 588 } 589 590 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 591 VisitObjCContainerDecl(D); 592 Writer.AddDeclRef(D->getClassInterface(), Record); 593 // Abstract class (no need to define a stable serialization::DECL code). 594 } 595 596 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 597 VisitObjCImplDecl(D); 598 Writer.AddIdentifierRef(D->getIdentifier(), Record); 599 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 600 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 601 } 602 603 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 604 VisitObjCImplDecl(D); 605 Writer.AddDeclRef(D->getSuperClass(), Record); 606 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record); 607 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record); 608 Writer.AddCXXCtorInitializers(D->IvarInitializers, D->NumIvarInitializers, 609 Record); 610 Record.push_back(D->hasSynthBitfield()); 611 Code = serialization::DECL_OBJC_IMPLEMENTATION; 612 } 613 614 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 615 VisitDecl(D); 616 Writer.AddSourceLocation(D->getLocStart(), Record); 617 Writer.AddDeclRef(D->getPropertyDecl(), Record); 618 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 619 Writer.AddSourceLocation(D->getPropertyIvarDeclLoc(), Record); 620 Writer.AddStmt(D->getGetterCXXConstructor()); 621 Writer.AddStmt(D->getSetterCXXAssignment()); 622 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 623 } 624 625 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 626 VisitDeclaratorDecl(D); 627 Record.push_back(D->isMutable()); 628 Record.push_back(D->getBitWidth()? 1 : D->hasInClassInitializer() ? 2 : 0); 629 if (D->getBitWidth()) 630 Writer.AddStmt(D->getBitWidth()); 631 else if (D->hasInClassInitializer()) 632 Writer.AddStmt(D->getInClassInitializer()); 633 if (!D->getDeclName()) 634 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); 635 636 if (!D->hasAttrs() && 637 !D->isImplicit() && 638 !D->isUsed(false) && 639 !D->isInvalidDecl() && 640 !D->isReferenced() && 641 !D->isTopLevelDeclInObjCContainer() && 642 !D->isModulePrivate() && 643 !D->getBitWidth() && 644 !D->hasInClassInitializer() && 645 !D->hasExtInfo() && 646 !ObjCIvarDecl::classofKind(D->getKind()) && 647 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 648 D->getDeclName()) 649 AbbrevToUse = Writer.getDeclFieldAbbrev(); 650 651 Code = serialization::DECL_FIELD; 652 } 653 654 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 655 VisitValueDecl(D); 656 Record.push_back(D->getChainingSize()); 657 658 for (IndirectFieldDecl::chain_iterator 659 P = D->chain_begin(), 660 PEnd = D->chain_end(); P != PEnd; ++P) 661 Writer.AddDeclRef(*P, Record); 662 Code = serialization::DECL_INDIRECTFIELD; 663 } 664 665 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 666 VisitRedeclarable(D); 667 VisitDeclaratorDecl(D); 668 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 669 Record.push_back(D->getStorageClassAsWritten()); 670 Record.push_back(D->isThreadSpecified()); 671 Record.push_back(D->getInitStyle()); 672 Record.push_back(D->isExceptionVariable()); 673 Record.push_back(D->isNRVOVariable()); 674 Record.push_back(D->isCXXForRangeDecl()); 675 Record.push_back(D->isARCPseudoStrong()); 676 if (D->getInit()) { 677 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); 678 Writer.AddStmt(D->getInit()); 679 } else { 680 Record.push_back(0); 681 } 682 683 MemberSpecializationInfo *SpecInfo 684 = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0; 685 Record.push_back(SpecInfo != 0); 686 if (SpecInfo) { 687 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); 688 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 689 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); 690 } 691 692 if (!D->hasAttrs() && 693 !D->isImplicit() && 694 !D->isUsed(false) && 695 !D->isInvalidDecl() && 696 !D->isReferenced() && 697 !D->isTopLevelDeclInObjCContainer() && 698 D->getAccess() == AS_none && 699 !D->isModulePrivate() && 700 D->getDeclName().getNameKind() == DeclarationName::Identifier && 701 !D->hasExtInfo() && 702 D->getFirstDeclaration() == D->getMostRecentDecl() && 703 D->getInitStyle() == VarDecl::CInit && 704 D->getInit() == 0 && 705 !isa<ParmVarDecl>(D) && 706 !SpecInfo) 707 AbbrevToUse = Writer.getDeclVarAbbrev(); 708 709 Code = serialization::DECL_VAR; 710 } 711 712 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 713 VisitVarDecl(D); 714 Code = serialization::DECL_IMPLICIT_PARAM; 715 } 716 717 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 718 VisitVarDecl(D); 719 Record.push_back(D->isObjCMethodParameter()); 720 Record.push_back(D->getFunctionScopeDepth()); 721 Record.push_back(D->getFunctionScopeIndex()); 722 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 723 Record.push_back(D->isKNRPromoted()); 724 Record.push_back(D->hasInheritedDefaultArg()); 725 Record.push_back(D->hasUninstantiatedDefaultArg()); 726 if (D->hasUninstantiatedDefaultArg()) 727 Writer.AddStmt(D->getUninstantiatedDefaultArg()); 728 Code = serialization::DECL_PARM_VAR; 729 730 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 731 732 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 733 // we dynamically check for the properties that we optimize for, but don't 734 // know are true of all PARM_VAR_DECLs. 735 if (!D->hasAttrs() && 736 !D->hasExtInfo() && 737 !D->isImplicit() && 738 !D->isUsed(false) && 739 !D->isInvalidDecl() && 740 !D->isReferenced() && 741 D->getAccess() == AS_none && 742 !D->isModulePrivate() && 743 D->getStorageClass() == 0 && 744 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 745 D->getFunctionScopeDepth() == 0 && 746 D->getObjCDeclQualifier() == 0 && 747 !D->isKNRPromoted() && 748 !D->hasInheritedDefaultArg() && 749 D->getInit() == 0 && 750 !D->hasUninstantiatedDefaultArg()) // No default expr. 751 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 752 753 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 754 // just us assuming it. 755 assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread"); 756 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 757 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 758 assert(D->getPreviousDecl() == 0 && "PARM_VAR_DECL can't be redecl"); 759 assert(!D->isStaticDataMember() && 760 "PARM_VAR_DECL can't be static data member"); 761 } 762 763 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 764 VisitDecl(D); 765 Writer.AddStmt(D->getAsmString()); 766 Writer.AddSourceLocation(D->getRParenLoc(), Record); 767 Code = serialization::DECL_FILE_SCOPE_ASM; 768 } 769 770 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 771 VisitDecl(D); 772 Writer.AddStmt(D->getBody()); 773 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); 774 Record.push_back(D->param_size()); 775 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 776 P != PEnd; ++P) 777 Writer.AddDeclRef(*P, Record); 778 Record.push_back(D->isVariadic()); 779 Record.push_back(D->blockMissingReturnType()); 780 Record.push_back(D->isConversionFromLambda()); 781 Record.push_back(D->capturesCXXThis()); 782 Record.push_back(D->getNumCaptures()); 783 for (BlockDecl::capture_iterator 784 i = D->capture_begin(), e = D->capture_end(); i != e; ++i) { 785 const BlockDecl::Capture &capture = *i; 786 Writer.AddDeclRef(capture.getVariable(), Record); 787 788 unsigned flags = 0; 789 if (capture.isByRef()) flags |= 1; 790 if (capture.isNested()) flags |= 2; 791 if (capture.hasCopyExpr()) flags |= 4; 792 Record.push_back(flags); 793 794 if (capture.hasCopyExpr()) Writer.AddStmt(capture.getCopyExpr()); 795 } 796 797 Code = serialization::DECL_BLOCK; 798 } 799 800 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 801 VisitDecl(D); 802 Record.push_back(D->getLanguage()); 803 Writer.AddSourceLocation(D->getExternLoc(), Record); 804 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 805 Code = serialization::DECL_LINKAGE_SPEC; 806 } 807 808 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 809 VisitNamedDecl(D); 810 Writer.AddSourceLocation(D->getLocStart(), Record); 811 Code = serialization::DECL_LABEL; 812 } 813 814 815 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 816 VisitRedeclarable(D); 817 VisitNamedDecl(D); 818 Record.push_back(D->isInline()); 819 Writer.AddSourceLocation(D->getLocStart(), Record); 820 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 821 822 if (D->isOriginalNamespace()) 823 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 824 Code = serialization::DECL_NAMESPACE; 825 826 if (Writer.hasChain() && !D->isOriginalNamespace() && 827 D->getOriginalNamespace()->isFromASTFile()) { 828 NamespaceDecl *NS = D->getOriginalNamespace(); 829 Writer.AddUpdatedDeclContext(NS); 830 831 // Make sure all visible decls are written. They will be recorded later. 832 if (StoredDeclsMap *Map = NS->buildLookup()) { 833 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 834 D != DEnd; ++D) { 835 DeclContext::lookup_result Result = D->second.getLookupResult(); 836 while (Result.first != Result.second) { 837 Writer.GetDeclRef(*Result.first); 838 ++Result.first; 839 } 840 } 841 } 842 } 843 844 if (Writer.hasChain() && D->isAnonymousNamespace() && 845 D == D->getMostRecentDecl()) { 846 // This is a most recent reopening of the anonymous namespace. If its parent 847 // is in a previous PCH (or is the TU), mark that parent for update, because 848 // the original namespace always points to the latest re-opening of its 849 // anonymous namespace. 850 Decl *Parent = cast<Decl>( 851 D->getParent()->getRedeclContext()->getPrimaryContext()); 852 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 853 ASTWriter::UpdateRecord &Record = Writer.DeclUpdates[Parent]; 854 Record.push_back(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE); 855 Writer.AddDeclRef(D, Record); 856 } 857 } 858 } 859 860 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 861 VisitNamedDecl(D); 862 Writer.AddSourceLocation(D->getNamespaceLoc(), Record); 863 Writer.AddSourceLocation(D->getTargetNameLoc(), Record); 864 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 865 Writer.AddDeclRef(D->getNamespace(), Record); 866 Code = serialization::DECL_NAMESPACE_ALIAS; 867 } 868 869 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 870 VisitNamedDecl(D); 871 Writer.AddSourceLocation(D->getUsingLocation(), Record); 872 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 873 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 874 Writer.AddDeclRef(D->FirstUsingShadow.getPointer(), Record); 875 Record.push_back(D->isTypeName()); 876 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); 877 Code = serialization::DECL_USING; 878 } 879 880 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 881 VisitNamedDecl(D); 882 Writer.AddDeclRef(D->getTargetDecl(), Record); 883 Writer.AddDeclRef(D->UsingOrNextShadow, Record); 884 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); 885 Code = serialization::DECL_USING_SHADOW; 886 } 887 888 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 889 VisitNamedDecl(D); 890 Writer.AddSourceLocation(D->getUsingLoc(), Record); 891 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); 892 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 893 Writer.AddDeclRef(D->getNominatedNamespace(), Record); 894 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); 895 Code = serialization::DECL_USING_DIRECTIVE; 896 } 897 898 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 899 VisitValueDecl(D); 900 Writer.AddSourceLocation(D->getUsingLoc(), Record); 901 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 902 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 903 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 904 } 905 906 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 907 UnresolvedUsingTypenameDecl *D) { 908 VisitTypeDecl(D); 909 Writer.AddSourceLocation(D->getTypenameLoc(), Record); 910 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 911 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 912 } 913 914 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 915 VisitRecordDecl(D); 916 Record.push_back(D->isThisDeclarationADefinition()); 917 if (D->isThisDeclarationADefinition()) 918 Writer.AddCXXDefinitionData(D, Record); 919 920 enum { 921 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 922 }; 923 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 924 Record.push_back(CXXRecTemplate); 925 Writer.AddDeclRef(TemplD, Record); 926 } else if (MemberSpecializationInfo *MSInfo 927 = D->getMemberSpecializationInfo()) { 928 Record.push_back(CXXRecMemberSpecialization); 929 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); 930 Record.push_back(MSInfo->getTemplateSpecializationKind()); 931 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); 932 } else { 933 Record.push_back(CXXRecNotTemplate); 934 } 935 936 // Store the key function to avoid deserializing every method so we can 937 // compute it. 938 if (D->IsCompleteDefinition) 939 Writer.AddDeclRef(Context.getKeyFunction(D), Record); 940 941 Code = serialization::DECL_CXX_RECORD; 942 } 943 944 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 945 VisitFunctionDecl(D); 946 Record.push_back(D->size_overridden_methods()); 947 for (CXXMethodDecl::method_iterator 948 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 949 I != E; ++I) 950 Writer.AddDeclRef(*I, Record); 951 Code = serialization::DECL_CXX_METHOD; 952 } 953 954 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 955 VisitCXXMethodDecl(D); 956 957 Record.push_back(D->IsExplicitSpecified); 958 Record.push_back(D->ImplicitlyDefined); 959 Writer.AddCXXCtorInitializers(D->CtorInitializers, D->NumCtorInitializers, 960 Record); 961 962 Code = serialization::DECL_CXX_CONSTRUCTOR; 963 } 964 965 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 966 VisitCXXMethodDecl(D); 967 968 Record.push_back(D->ImplicitlyDefined); 969 Writer.AddDeclRef(D->OperatorDelete, Record); 970 971 Code = serialization::DECL_CXX_DESTRUCTOR; 972 } 973 974 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 975 VisitCXXMethodDecl(D); 976 Record.push_back(D->IsExplicitSpecified); 977 Code = serialization::DECL_CXX_CONVERSION; 978 } 979 980 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 981 VisitDecl(D); 982 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 983 Record.push_back(!IdentifierLocs.empty()); 984 if (IdentifierLocs.empty()) { 985 Writer.AddSourceLocation(D->getLocEnd(), Record); 986 Record.push_back(1); 987 } else { 988 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 989 Writer.AddSourceLocation(IdentifierLocs[I], Record); 990 Record.push_back(IdentifierLocs.size()); 991 } 992 // Note: the number of source locations must always be the last element in 993 // the record. 994 Code = serialization::DECL_IMPORT; 995 } 996 997 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 998 VisitDecl(D); 999 Writer.AddSourceLocation(D->getColonLoc(), Record); 1000 Code = serialization::DECL_ACCESS_SPEC; 1001 } 1002 1003 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1004 VisitDecl(D); 1005 Record.push_back(D->Friend.is<TypeSourceInfo*>()); 1006 if (D->Friend.is<TypeSourceInfo*>()) 1007 Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record); 1008 else 1009 Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record); 1010 Writer.AddDeclRef(D->getNextFriend(), Record); 1011 Record.push_back(D->UnsupportedFriend); 1012 Writer.AddSourceLocation(D->FriendLoc, Record); 1013 Code = serialization::DECL_FRIEND; 1014 } 1015 1016 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1017 VisitDecl(D); 1018 Record.push_back(D->getNumTemplateParameters()); 1019 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1020 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record); 1021 Record.push_back(D->getFriendDecl() != 0); 1022 if (D->getFriendDecl()) 1023 Writer.AddDeclRef(D->getFriendDecl(), Record); 1024 else 1025 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 1026 Writer.AddSourceLocation(D->getFriendLoc(), Record); 1027 Code = serialization::DECL_FRIEND_TEMPLATE; 1028 } 1029 1030 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1031 VisitNamedDecl(D); 1032 1033 Writer.AddDeclRef(D->getTemplatedDecl(), Record); 1034 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1035 } 1036 1037 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1038 VisitRedeclarable(D); 1039 1040 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1041 // getCommonPtr() can be used while this is still initializing. 1042 if (D->isFirstDeclaration()) { 1043 // This declaration owns the 'common' pointer, so serialize that data now. 1044 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); 1045 if (D->getInstantiatedFromMemberTemplate()) 1046 Record.push_back(D->isMemberSpecialization()); 1047 } 1048 1049 VisitTemplateDecl(D); 1050 Record.push_back(D->getIdentifierNamespace()); 1051 } 1052 1053 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1054 VisitRedeclarableTemplateDecl(D); 1055 1056 if (D->isFirstDeclaration()) { 1057 typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy; 1058 CTSDSetTy &CTSDSet = D->getSpecializations(); 1059 Record.push_back(CTSDSet.size()); 1060 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) { 1061 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 1062 Writer.AddDeclRef(&*I, Record); 1063 } 1064 1065 typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy; 1066 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations(); 1067 Record.push_back(CTPSDSet.size()); 1068 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) { 1069 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 1070 Writer.AddDeclRef(&*I, Record); 1071 } 1072 1073 // InjectedClassNameType is computed, no need to write it. 1074 } 1075 Code = serialization::DECL_CLASS_TEMPLATE; 1076 } 1077 1078 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1079 ClassTemplateSpecializationDecl *D) { 1080 VisitCXXRecordDecl(D); 1081 1082 llvm::PointerUnion<ClassTemplateDecl *, 1083 ClassTemplatePartialSpecializationDecl *> InstFrom 1084 = D->getSpecializedTemplateOrPartial(); 1085 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1086 Writer.AddDeclRef(InstFromD, Record); 1087 } else { 1088 Writer.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>(), 1089 Record); 1090 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 1091 } 1092 1093 // Explicit info. 1094 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 1095 if (D->getTypeAsWritten()) { 1096 Writer.AddSourceLocation(D->getExternLoc(), Record); 1097 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 1098 } 1099 1100 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 1101 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 1102 Record.push_back(D->getSpecializationKind()); 1103 1104 if (D->isCanonicalDecl()) { 1105 // When reading, we'll add it to the folding set of the following template. 1106 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 1107 } 1108 1109 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1110 } 1111 1112 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1113 ClassTemplatePartialSpecializationDecl *D) { 1114 VisitClassTemplateSpecializationDecl(D); 1115 1116 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1117 1118 Record.push_back(D->getNumTemplateArgsAsWritten()); 1119 for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i) 1120 Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record); 1121 1122 Record.push_back(D->getSequenceNumber()); 1123 1124 // These are read/set from/to the first declaration. 1125 if (D->getPreviousDecl() == 0) { 1126 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 1127 Record.push_back(D->isMemberSpecialization()); 1128 } 1129 1130 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1131 } 1132 1133 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1134 ClassScopeFunctionSpecializationDecl *D) { 1135 VisitDecl(D); 1136 Writer.AddDeclRef(D->getSpecialization(), Record); 1137 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1138 } 1139 1140 1141 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1142 VisitRedeclarableTemplateDecl(D); 1143 1144 if (D->isFirstDeclaration()) { 1145 // This FunctionTemplateDecl owns the CommonPtr; write it. 1146 1147 // Write the function specialization declarations. 1148 Record.push_back(D->getSpecializations().size()); 1149 for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator 1150 I = D->getSpecializations().begin(), 1151 E = D->getSpecializations().end() ; I != E; ++I) { 1152 assert(I->Function->isCanonicalDecl() && 1153 "Expected only canonical decls in set"); 1154 Writer.AddDeclRef(I->Function, Record); 1155 } 1156 } 1157 Code = serialization::DECL_FUNCTION_TEMPLATE; 1158 } 1159 1160 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1161 VisitTypeDecl(D); 1162 1163 Record.push_back(D->wasDeclaredWithTypename()); 1164 Record.push_back(D->defaultArgumentWasInherited()); 1165 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 1166 1167 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1168 } 1169 1170 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1171 // For an expanded parameter pack, record the number of expansion types here 1172 // so that it's easier for 1173 if (D->isExpandedParameterPack()) 1174 Record.push_back(D->getNumExpansionTypes()); 1175 1176 VisitDeclaratorDecl(D); 1177 // TemplateParmPosition. 1178 Record.push_back(D->getDepth()); 1179 Record.push_back(D->getPosition()); 1180 1181 if (D->isExpandedParameterPack()) { 1182 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1183 Writer.AddTypeRef(D->getExpansionType(I), Record); 1184 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record); 1185 } 1186 1187 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1188 } else { 1189 // Rest of NonTypeTemplateParmDecl. 1190 Record.push_back(D->isParameterPack()); 1191 Record.push_back(D->getDefaultArgument() != 0); 1192 if (D->getDefaultArgument()) { 1193 Writer.AddStmt(D->getDefaultArgument()); 1194 Record.push_back(D->defaultArgumentWasInherited()); 1195 } 1196 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1197 } 1198 } 1199 1200 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1201 VisitTemplateDecl(D); 1202 // TemplateParmPosition. 1203 Record.push_back(D->getDepth()); 1204 Record.push_back(D->getPosition()); 1205 // Rest of TemplateTemplateParmDecl. 1206 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1207 Record.push_back(D->defaultArgumentWasInherited()); 1208 Record.push_back(D->isParameterPack()); 1209 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1210 } 1211 1212 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1213 VisitRedeclarableTemplateDecl(D); 1214 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1215 } 1216 1217 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1218 VisitDecl(D); 1219 Writer.AddStmt(D->getAssertExpr()); 1220 Writer.AddStmt(D->getMessage()); 1221 Writer.AddSourceLocation(D->getRParenLoc(), Record); 1222 Code = serialization::DECL_STATIC_ASSERT; 1223 } 1224 1225 /// \brief Emit the DeclContext part of a declaration context decl. 1226 /// 1227 /// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1228 /// block for this declaration context is stored. May be 0 to indicate 1229 /// that there are no declarations stored within this context. 1230 /// 1231 /// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1232 /// block for this declaration context is stored. May be 0 to indicate 1233 /// that there are no declarations visible from this context. Note 1234 /// that this value will not be emitted for non-primary declaration 1235 /// contexts. 1236 void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1237 uint64_t VisibleOffset) { 1238 Record.push_back(LexicalOffset); 1239 Record.push_back(VisibleOffset); 1240 } 1241 1242 template <typename T> 1243 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1244 T *First = D->getFirstDeclaration(); 1245 if (First->getMostRecentDecl() != First) { 1246 // There is more than one declaration of this entity, so we will need to 1247 // write a redeclaration chain. 1248 Writer.AddDeclRef(First, Record); 1249 Writer.Redeclarations.insert(First); 1250 1251 // Make sure that we serialize both the previous and the most-recent 1252 // declarations, which (transitively) ensures that all declarations in the 1253 // chain get serialized. 1254 (void)Writer.GetDeclRef(D->getPreviousDecl()); 1255 (void)Writer.GetDeclRef(First->getMostRecentDecl()); 1256 } else { 1257 // We use the sentinel value 0 to indicate an only declaration. 1258 Record.push_back(0); 1259 } 1260 1261 } 1262 1263 //===----------------------------------------------------------------------===// 1264 // ASTWriter Implementation 1265 //===----------------------------------------------------------------------===// 1266 1267 void ASTWriter::WriteDeclsBlockAbbrevs() { 1268 using namespace llvm; 1269 1270 BitCodeAbbrev *Abv; 1271 1272 // Abbreviation for DECL_FIELD 1273 Abv = new BitCodeAbbrev(); 1274 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1275 // Decl 1276 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1277 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1278 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1279 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1280 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1281 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1282 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1283 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1284 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1285 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1286 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1287 // NamedDecl 1288 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1289 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1290 // ValueDecl 1291 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1292 // DeclaratorDecl 1293 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1294 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1295 // FieldDecl 1296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1297 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1298 // Type Source Info 1299 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1300 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1301 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1302 DeclFieldAbbrev = Stream.EmitAbbrev(Abv); 1303 1304 // Abbreviation for DECL_OBJC_IVAR 1305 Abv = new BitCodeAbbrev(); 1306 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1307 // Decl 1308 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1309 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1310 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1311 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1312 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1313 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1314 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1315 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1316 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1317 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1319 // NamedDecl 1320 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1321 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1322 // ValueDecl 1323 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1324 // DeclaratorDecl 1325 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1326 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1327 // FieldDecl 1328 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1329 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1330 // ObjC Ivar 1331 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1332 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1333 // Type Source Info 1334 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1335 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1336 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1337 DeclObjCIvarAbbrev = Stream.EmitAbbrev(Abv); 1338 1339 // Abbreviation for DECL_ENUM 1340 Abv = new BitCodeAbbrev(); 1341 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1342 // Redeclarable 1343 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1344 // Decl 1345 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1346 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1347 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1348 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1349 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1350 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1351 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1352 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1353 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1354 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1355 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1356 // NamedDecl 1357 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1358 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1359 // TypeDecl 1360 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1361 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1362 // TagDecl 1363 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1364 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1365 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1366 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1367 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1368 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1369 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1370 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl 1371 // EnumDecl 1372 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1373 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1374 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1375 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1376 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1377 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1378 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1379 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1380 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1381 // DC 1382 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1383 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1384 DeclEnumAbbrev = Stream.EmitAbbrev(Abv); 1385 1386 // Abbreviation for DECL_RECORD 1387 Abv = new BitCodeAbbrev(); 1388 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1389 // Redeclarable 1390 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1391 // Decl 1392 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1393 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1394 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1395 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1396 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1397 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1398 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1399 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1400 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1401 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1402 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1403 // NamedDecl 1404 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1405 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1406 // TypeDecl 1407 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1408 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1409 // TagDecl 1410 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1411 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1412 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1413 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1414 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1415 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1416 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1417 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl 1418 // RecordDecl 1419 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1420 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1421 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1422 // DC 1423 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1424 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1425 DeclRecordAbbrev = Stream.EmitAbbrev(Abv); 1426 1427 // Abbreviation for DECL_PARM_VAR 1428 Abv = new BitCodeAbbrev(); 1429 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1430 // Redeclarable 1431 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1432 // Decl 1433 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1434 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1435 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1436 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1437 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1438 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1439 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1440 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1441 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1442 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1443 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1444 // NamedDecl 1445 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1446 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1447 // ValueDecl 1448 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1449 // DeclaratorDecl 1450 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1451 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1452 // VarDecl 1453 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1454 Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten 1455 Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified 1456 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1457 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable 1458 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable 1459 Abv->Add(BitCodeAbbrevOp(0)); // isCXXForRangeDecl 1460 Abv->Add(BitCodeAbbrevOp(0)); // isARCPseudoStrong 1461 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1462 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1463 // ParmVarDecl 1464 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1465 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1466 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1467 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1468 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1469 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1470 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1471 // Type Source Info 1472 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1473 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1474 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1475 DeclParmVarAbbrev = Stream.EmitAbbrev(Abv); 1476 1477 // Abbreviation for DECL_TYPEDEF 1478 Abv = new BitCodeAbbrev(); 1479 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1480 // Redeclarable 1481 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1482 // Decl 1483 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1484 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1485 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1486 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1487 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1488 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1489 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1490 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1491 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1492 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1493 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1494 // NamedDecl 1495 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1496 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1497 // TypeDecl 1498 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1499 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1500 // TypedefDecl 1501 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1502 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1503 DeclTypedefAbbrev = Stream.EmitAbbrev(Abv); 1504 1505 // Abbreviation for DECL_VAR 1506 Abv = new BitCodeAbbrev(); 1507 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1508 // Redeclarable 1509 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1510 // Decl 1511 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1512 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1513 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1514 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1515 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1516 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1517 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1518 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1519 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1520 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1521 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1522 // NamedDecl 1523 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1524 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1525 // ValueDecl 1526 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1527 // DeclaratorDecl 1528 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1529 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1530 // VarDecl 1531 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClass 1532 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClassAsWritten 1533 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isThreadSpecified 1534 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CXXDirectInitializer 1535 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 1536 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 1537 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 1538 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 1539 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasInit 1540 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasMemberSpecInfo 1541 // Type Source Info 1542 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1543 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1544 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1545 DeclVarAbbrev = Stream.EmitAbbrev(Abv); 1546 1547 // Abbreviation for EXPR_DECL_REF 1548 Abv = new BitCodeAbbrev(); 1549 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 1550 //Stmt 1551 //Expr 1552 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1553 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1554 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1555 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1556 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1557 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1558 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1559 //DeclRefExpr 1560 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 1561 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 1562 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 1563 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 1564 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //RefersToEnclosingLocal 1565 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 1566 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1567 DeclRefExprAbbrev = Stream.EmitAbbrev(Abv); 1568 1569 // Abbreviation for EXPR_INTEGER_LITERAL 1570 Abv = new BitCodeAbbrev(); 1571 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 1572 //Stmt 1573 //Expr 1574 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1575 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1576 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1577 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1578 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1579 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1580 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1581 //Integer Literal 1582 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1583 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 1584 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 1585 IntegerLiteralAbbrev = Stream.EmitAbbrev(Abv); 1586 1587 // Abbreviation for EXPR_CHARACTER_LITERAL 1588 Abv = new BitCodeAbbrev(); 1589 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 1590 //Stmt 1591 //Expr 1592 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1593 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1594 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1595 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1596 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1597 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1599 //Character Literal 1600 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 1601 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1602 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //IsWide 1603 CharacterLiteralAbbrev = Stream.EmitAbbrev(Abv); 1604 1605 Abv = new BitCodeAbbrev(); 1606 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1607 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1608 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1609 1610 Abv = new BitCodeAbbrev(); 1611 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1612 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1613 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1614 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1615 } 1616 1617 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1618 /// consumers of the AST. 1619 /// 1620 /// Such decls will always be deserialized from the AST file, so we would like 1621 /// this to be as restrictive as possible. Currently the predicate is driven by 1622 /// code generation requirements, if other clients have a different notion of 1623 /// what is "required" then we may have to consider an alternate scheme where 1624 /// clients can iterate over the top-level decls and get information on them, 1625 /// without necessary deserializing them. We could explicitly require such 1626 /// clients to use a separate API call to "realize" the decl. This should be 1627 /// relatively painless since they would presumably only do it for top-level 1628 /// decls. 1629 static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 1630 // An ObjCMethodDecl is never considered as "required" because its 1631 // implementation container always is. 1632 1633 // File scoped assembly or obj-c implementation must be seen. 1634 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D)) 1635 return true; 1636 1637 return Context.DeclMustBeEmitted(D); 1638 } 1639 1640 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 1641 // Switch case IDs are per Decl. 1642 ClearSwitchCaseIDs(); 1643 1644 RecordData Record; 1645 ASTDeclWriter W(*this, Context, Record); 1646 1647 // Determine the ID for this declaration. 1648 serialization::DeclID ID; 1649 if (D->isFromASTFile()) 1650 ID = getDeclID(D); 1651 else { 1652 serialization::DeclID &IDR = DeclIDs[D]; 1653 if (IDR == 0) 1654 IDR = NextDeclID++; 1655 1656 ID= IDR; 1657 } 1658 1659 bool isReplacingADecl = ID < FirstDeclID; 1660 1661 // If this declaration is also a DeclContext, write blocks for the 1662 // declarations that lexically stored inside its context and those 1663 // declarations that are visible from its context. These blocks 1664 // are written before the declaration itself so that we can put 1665 // their offsets into the record for the declaration. 1666 uint64_t LexicalOffset = 0; 1667 uint64_t VisibleOffset = 0; 1668 DeclContext *DC = dyn_cast<DeclContext>(D); 1669 if (DC) { 1670 if (isReplacingADecl) { 1671 // It is replacing a decl from a chained PCH; make sure that the 1672 // DeclContext is fully loaded. 1673 if (DC->hasExternalLexicalStorage()) 1674 DC->LoadLexicalDeclsFromExternalStorage(); 1675 if (DC->hasExternalVisibleStorage()) 1676 Chain->completeVisibleDeclsMap(DC); 1677 } 1678 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 1679 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 1680 } 1681 1682 if (isReplacingADecl) { 1683 // We're replacing a decl in a previous file. 1684 ReplacedDecls.push_back(ReplacedDeclInfo(ID, Stream.GetCurrentBitNo(), 1685 D->getLocation())); 1686 } else { 1687 unsigned Index = ID - FirstDeclID; 1688 1689 // Record the offset for this declaration 1690 SourceLocation Loc = D->getLocation(); 1691 if (DeclOffsets.size() == Index) 1692 DeclOffsets.push_back(DeclOffset(Loc, Stream.GetCurrentBitNo())); 1693 else if (DeclOffsets.size() < Index) { 1694 DeclOffsets.resize(Index+1); 1695 DeclOffsets[Index].setLocation(Loc); 1696 DeclOffsets[Index].BitOffset = Stream.GetCurrentBitNo(); 1697 } 1698 1699 SourceManager &SM = Context.getSourceManager(); 1700 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 1701 associateDeclWithFile(D, ID); 1702 } 1703 1704 // Build and emit a record for this declaration 1705 Record.clear(); 1706 W.Code = (serialization::DeclCode)0; 1707 W.AbbrevToUse = 0; 1708 W.Visit(D); 1709 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 1710 1711 if (!W.Code) 1712 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 1713 D->getDeclKindName() + "'"); 1714 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 1715 1716 // Flush any expressions that were written as part of this declaration. 1717 FlushStmts(); 1718 1719 // Flush C++ base specifiers, if there are any. 1720 FlushCXXBaseSpecifiers(); 1721 1722 // Note "external" declarations so that we can add them to a record in the 1723 // AST file later. 1724 // 1725 // FIXME: This should be renamed, the predicate is much more complicated. 1726 if (isRequiredDecl(D, Context)) 1727 ExternalDefinitions.push_back(ID); 1728 } 1729