ASTWriterDecl.cpp revision ef23b6001e8d9715246ca23bd8c3a6887d7844cb
1//===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements serialization for Declarations. 11// 12//===----------------------------------------------------------------------===// 13 14#include "clang/Serialization/ASTWriter.h" 15#include "ASTCommon.h" 16#include "clang/AST/DeclVisitor.h" 17#include "clang/AST/DeclCXX.h" 18#include "clang/AST/DeclTemplate.h" 19#include "clang/AST/Expr.h" 20#include "clang/AST/DeclContextInternals.h" 21#include "clang/Basic/SourceManager.h" 22#include "llvm/ADT/Twine.h" 23#include "llvm/Bitcode/BitstreamWriter.h" 24#include "llvm/Support/ErrorHandling.h" 25using namespace clang; 26using namespace serialization; 27 28//===----------------------------------------------------------------------===// 29// Declaration serialization 30//===----------------------------------------------------------------------===// 31 32namespace clang { 33 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 34 35 ASTWriter &Writer; 36 ASTContext &Context; 37 typedef ASTWriter::RecordData RecordData; 38 RecordData &Record; 39 40 public: 41 serialization::DeclCode Code; 42 unsigned AbbrevToUse; 43 44 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, RecordData &Record) 45 : Writer(Writer), Context(Context), Record(Record) { 46 } 47 48 void Visit(Decl *D); 49 50 void VisitDecl(Decl *D); 51 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 52 void VisitNamedDecl(NamedDecl *D); 53 void VisitLabelDecl(LabelDecl *LD); 54 void VisitNamespaceDecl(NamespaceDecl *D); 55 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 56 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 57 void VisitTypeDecl(TypeDecl *D); 58 void VisitTypedefDecl(TypedefDecl *D); 59 void VisitTypeAliasDecl(TypeAliasDecl *D); 60 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 61 void VisitTagDecl(TagDecl *D); 62 void VisitEnumDecl(EnumDecl *D); 63 void VisitRecordDecl(RecordDecl *D); 64 void VisitCXXRecordDecl(CXXRecordDecl *D); 65 void VisitClassTemplateSpecializationDecl( 66 ClassTemplateSpecializationDecl *D); 67 void VisitClassTemplatePartialSpecializationDecl( 68 ClassTemplatePartialSpecializationDecl *D); 69 void VisitClassScopeFunctionSpecializationDecl( 70 ClassScopeFunctionSpecializationDecl *D); 71 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 72 void VisitValueDecl(ValueDecl *D); 73 void VisitEnumConstantDecl(EnumConstantDecl *D); 74 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 75 void VisitDeclaratorDecl(DeclaratorDecl *D); 76 void VisitFunctionDecl(FunctionDecl *D); 77 void VisitCXXMethodDecl(CXXMethodDecl *D); 78 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 79 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 80 void VisitCXXConversionDecl(CXXConversionDecl *D); 81 void VisitFieldDecl(FieldDecl *D); 82 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 83 void VisitVarDecl(VarDecl *D); 84 void VisitImplicitParamDecl(ImplicitParamDecl *D); 85 void VisitParmVarDecl(ParmVarDecl *D); 86 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 87 void VisitTemplateDecl(TemplateDecl *D); 88 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 89 void VisitClassTemplateDecl(ClassTemplateDecl *D); 90 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 91 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 92 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 93 void VisitUsingDecl(UsingDecl *D); 94 void VisitUsingShadowDecl(UsingShadowDecl *D); 95 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 96 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 97 void VisitAccessSpecDecl(AccessSpecDecl *D); 98 void VisitFriendDecl(FriendDecl *D); 99 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 100 void VisitStaticAssertDecl(StaticAssertDecl *D); 101 void VisitBlockDecl(BlockDecl *D); 102 103 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 104 uint64_t VisibleOffset); 105 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 106 107 108 // FIXME: Put in the same order is DeclNodes.td? 109 void VisitObjCMethodDecl(ObjCMethodDecl *D); 110 void VisitObjCContainerDecl(ObjCContainerDecl *D); 111 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 112 void VisitObjCIvarDecl(ObjCIvarDecl *D); 113 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 114 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 115 void VisitObjCClassDecl(ObjCClassDecl *D); 116 void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 117 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 118 void VisitObjCImplDecl(ObjCImplDecl *D); 119 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 120 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 121 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 122 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 123 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 124 }; 125} 126 127void ASTDeclWriter::Visit(Decl *D) { 128 DeclVisitor<ASTDeclWriter>::Visit(D); 129 130 // Source locations require array (variable-length) abbreviations. The 131 // abbreviation infrastructure requires that arrays are encoded last, so 132 // we handle it here in the case of those classes derived from DeclaratorDecl 133 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)){ 134 Writer.AddTypeSourceInfo(DD->getTypeSourceInfo(), Record); 135 } 136 137 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 138 // have been written. We want it last because we will not read it back when 139 // retrieving it from the AST, we'll just lazily set the offset. 140 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 141 Record.push_back(FD->doesThisDeclarationHaveABody()); 142 if (FD->doesThisDeclarationHaveABody()) 143 Writer.AddStmt(FD->getBody()); 144 } 145} 146 147void ASTDeclWriter::VisitDecl(Decl *D) { 148 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 149 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 150 Record.push_back(D->isInvalidDecl()); 151 Record.push_back(D->hasAttrs()); 152 if (D->hasAttrs()) 153 Writer.WriteAttributes(D->getAttrs(), Record); 154 Record.push_back(D->isImplicit()); 155 Record.push_back(D->isUsed(false)); 156 Record.push_back(D->isReferenced()); 157 Record.push_back(D->getAccess()); 158 Record.push_back(D->ModulePrivate); 159} 160 161void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 162 llvm_unreachable("Translation units aren't directly serialized"); 163} 164 165void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 166 VisitDecl(D); 167 Writer.AddDeclarationName(D->getDeclName(), Record); 168} 169 170void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 171 VisitNamedDecl(D); 172 Writer.AddSourceLocation(D->getLocStart(), Record); 173 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 174} 175 176void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 177 VisitTypeDecl(D); 178 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 179 180 if (!D->hasAttrs() && 181 !D->isImplicit() && 182 !D->isUsed(false) && 183 D->RedeclLink.getNext() == D && 184 !D->isInvalidDecl() && 185 !D->isReferenced() && 186 D->getAccess() == AS_none && 187 !D->isModulePrivate() && 188 D->getDeclName().getNameKind() == DeclarationName::Identifier) 189 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 190 191 Code = serialization::DECL_TYPEDEF; 192} 193 194void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 195 VisitTypeDecl(D); 196 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 197 Code = serialization::DECL_TYPEALIAS; 198} 199 200void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 201 VisitRedeclarable(D); 202 VisitTypeDecl(D); 203 Record.push_back(D->getIdentifierNamespace()); 204 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 205 Record.push_back(D->isCompleteDefinition()); 206 Record.push_back(D->isEmbeddedInDeclarator()); 207 Record.push_back(D->isFreeStanding()); 208 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 209 Record.push_back(D->hasExtInfo()); 210 if (D->hasExtInfo()) 211 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 212 else 213 Writer.AddDeclRef(D->getTypedefNameForAnonDecl(), Record); 214} 215 216void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 217 VisitTagDecl(D); 218 Writer.AddTypeSourceInfo(D->getIntegerTypeSourceInfo(), Record); 219 if (!D->getIntegerTypeSourceInfo()) 220 Writer.AddTypeRef(D->getIntegerType(), Record); 221 Writer.AddTypeRef(D->getPromotionType(), Record); 222 Record.push_back(D->getNumPositiveBits()); 223 Record.push_back(D->getNumNegativeBits()); 224 Record.push_back(D->isScoped()); 225 Record.push_back(D->isScopedUsingClassTag()); 226 Record.push_back(D->isFixed()); 227 Writer.AddDeclRef(D->getInstantiatedFromMemberEnum(), Record); 228 229 if (!D->hasAttrs() && 230 !D->isImplicit() && 231 !D->isUsed(false) && 232 !D->hasExtInfo() && 233 D->RedeclLink.getNext() == D && 234 !D->isInvalidDecl() && 235 !D->isReferenced() && 236 D->getAccess() == AS_none && 237 !D->isModulePrivate() && 238 !CXXRecordDecl::classofKind(D->getKind()) && 239 !D->getIntegerTypeSourceInfo() && 240 D->getDeclName().getNameKind() == DeclarationName::Identifier) 241 AbbrevToUse = Writer.getDeclEnumAbbrev(); 242 243 Code = serialization::DECL_ENUM; 244} 245 246void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 247 VisitTagDecl(D); 248 Record.push_back(D->hasFlexibleArrayMember()); 249 Record.push_back(D->isAnonymousStructOrUnion()); 250 Record.push_back(D->hasObjectMember()); 251 252 if (!D->hasAttrs() && 253 !D->isImplicit() && 254 !D->isUsed(false) && 255 !D->hasExtInfo() && 256 D->RedeclLink.getNext() == D && 257 !D->isInvalidDecl() && 258 !D->isReferenced() && 259 D->getAccess() == AS_none && 260 !D->isModulePrivate() && 261 !CXXRecordDecl::classofKind(D->getKind()) && 262 D->getDeclName().getNameKind() == DeclarationName::Identifier) 263 AbbrevToUse = Writer.getDeclRecordAbbrev(); 264 265 Code = serialization::DECL_RECORD; 266} 267 268void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 269 VisitNamedDecl(D); 270 Writer.AddTypeRef(D->getType(), Record); 271} 272 273void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 274 VisitValueDecl(D); 275 Record.push_back(D->getInitExpr()? 1 : 0); 276 if (D->getInitExpr()) 277 Writer.AddStmt(D->getInitExpr()); 278 Writer.AddAPSInt(D->getInitVal(), Record); 279 280 Code = serialization::DECL_ENUM_CONSTANT; 281} 282 283void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 284 VisitValueDecl(D); 285 Writer.AddSourceLocation(D->getInnerLocStart(), Record); 286 Record.push_back(D->hasExtInfo()); 287 if (D->hasExtInfo()) 288 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 289} 290 291void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 292 VisitRedeclarable(D); 293 VisitDeclaratorDecl(D); 294 295 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 296 Record.push_back(D->getIdentifierNamespace()); 297 Record.push_back(D->getTemplatedKind()); 298 switch (D->getTemplatedKind()) { 299 default: llvm_unreachable("Unhandled TemplatedKind!"); 300 case FunctionDecl::TK_NonTemplate: 301 break; 302 case FunctionDecl::TK_FunctionTemplate: 303 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); 304 break; 305 case FunctionDecl::TK_MemberSpecialization: { 306 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 307 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 308 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 309 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 310 break; 311 } 312 case FunctionDecl::TK_FunctionTemplateSpecialization: { 313 FunctionTemplateSpecializationInfo * 314 FTSInfo = D->getTemplateSpecializationInfo(); 315 Writer.AddDeclRef(FTSInfo->getTemplate(), Record); 316 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 317 318 // Template arguments. 319 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); 320 321 // Template args as written. 322 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != 0); 323 if (FTSInfo->TemplateArgumentsAsWritten) { 324 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 325 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 326 i!=e; ++i) 327 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], 328 Record); 329 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc, 330 Record); 331 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc, 332 Record); 333 } 334 335 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); 336 337 if (D->isCanonicalDecl()) { 338 // Write the template that contains the specializations set. We will 339 // add a FunctionTemplateSpecializationInfo to it when reading. 340 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); 341 } 342 break; 343 } 344 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 345 DependentFunctionTemplateSpecializationInfo * 346 DFTSInfo = D->getDependentSpecializationInfo(); 347 348 // Templates. 349 Record.push_back(DFTSInfo->getNumTemplates()); 350 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 351 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); 352 353 // Templates args. 354 Record.push_back(DFTSInfo->getNumTemplateArgs()); 355 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 356 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); 357 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); 358 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); 359 break; 360 } 361 } 362 363 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 364 // after everything else is written. 365 366 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 367 Record.push_back(D->getStorageClassAsWritten()); 368 Record.push_back(D->IsInline); 369 Record.push_back(D->isInlineSpecified()); 370 Record.push_back(D->isVirtualAsWritten()); 371 Record.push_back(D->isPure()); 372 Record.push_back(D->hasInheritedPrototype()); 373 Record.push_back(D->hasWrittenPrototype()); 374 Record.push_back(D->isDeletedAsWritten()); 375 Record.push_back(D->isTrivial()); 376 Record.push_back(D->isDefaulted()); 377 Record.push_back(D->isExplicitlyDefaulted()); 378 Record.push_back(D->hasImplicitReturnZero()); 379 Record.push_back(D->isConstexpr()); 380 Writer.AddSourceLocation(D->getLocEnd(), Record); 381 382 Record.push_back(D->param_size()); 383 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 384 P != PEnd; ++P) 385 Writer.AddDeclRef(*P, Record); 386 Code = serialization::DECL_FUNCTION; 387} 388 389void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 390 VisitNamedDecl(D); 391 // FIXME: convert to LazyStmtPtr? 392 // Unlike C/C++, method bodies will never be in header files. 393 bool HasBodyStuff = D->getBody() != 0 || 394 D->getSelfDecl() != 0 || D->getCmdDecl() != 0; 395 Record.push_back(HasBodyStuff); 396 if (HasBodyStuff) { 397 Writer.AddStmt(D->getBody()); 398 Writer.AddDeclRef(D->getSelfDecl(), Record); 399 Writer.AddDeclRef(D->getCmdDecl(), Record); 400 } 401 Record.push_back(D->isInstanceMethod()); 402 Record.push_back(D->isVariadic()); 403 Record.push_back(D->isSynthesized()); 404 Record.push_back(D->isDefined()); 405 406 Record.push_back(D->IsRedeclaration); 407 Record.push_back(D->HasRedeclaration); 408 if (D->HasRedeclaration) { 409 assert(Context.getObjCMethodRedeclaration(D)); 410 Writer.AddDeclRef(Context.getObjCMethodRedeclaration(D), Record); 411 } 412 413 // FIXME: stable encoding for @required/@optional 414 Record.push_back(D->getImplementationControl()); 415 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway 416 Record.push_back(D->getObjCDeclQualifier()); 417 Record.push_back(D->hasRelatedResultType()); 418 Writer.AddTypeRef(D->getResultType(), Record); 419 Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record); 420 Writer.AddSourceLocation(D->getLocEnd(), Record); 421 Record.push_back(D->param_size()); 422 for (ObjCMethodDecl::param_iterator P = D->param_begin(), 423 PEnd = D->param_end(); P != PEnd; ++P) 424 Writer.AddDeclRef(*P, Record); 425 426 Record.push_back(D->SelLocsKind); 427 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 428 SourceLocation *SelLocs = D->getStoredSelLocs(); 429 Record.push_back(NumStoredSelLocs); 430 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 431 Writer.AddSourceLocation(SelLocs[i], Record); 432 433 Code = serialization::DECL_OBJC_METHOD; 434} 435 436void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 437 VisitNamedDecl(D); 438 Writer.AddSourceLocation(D->getAtStartLoc(), Record); 439 Writer.AddSourceRange(D->getAtEndRange(), Record); 440 // Abstract class (no need to define a stable serialization::DECL code). 441} 442 443void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 444 VisitObjCContainerDecl(D); 445 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 446 Writer.AddDeclRef(D->getSuperClass(), Record); 447 448 // Write out the protocols that are directly referenced by the @interface. 449 Record.push_back(D->ReferencedProtocols.size()); 450 for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), 451 PEnd = D->protocol_end(); 452 P != PEnd; ++P) 453 Writer.AddDeclRef(*P, Record); 454 for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 455 PLEnd = D->protocol_loc_end(); 456 PL != PLEnd; ++PL) 457 Writer.AddSourceLocation(*PL, Record); 458 459 // Write out the protocols that are transitively referenced. 460 Record.push_back(D->AllReferencedProtocols.size()); 461 for (ObjCList<ObjCProtocolDecl>::iterator 462 P = D->AllReferencedProtocols.begin(), 463 PEnd = D->AllReferencedProtocols.end(); 464 P != PEnd; ++P) 465 Writer.AddDeclRef(*P, Record); 466 467 // Write out the ivars. 468 Record.push_back(D->ivar_size()); 469 for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), 470 IEnd = D->ivar_end(); I != IEnd; ++I) 471 Writer.AddDeclRef(*I, Record); 472 Writer.AddDeclRef(D->getCategoryList(), Record); 473 Record.push_back(D->isInitiallyForwardDecl()); 474 Record.push_back(D->isForwardDecl()); 475 Record.push_back(D->isImplicitInterfaceDecl()); 476 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 477 Writer.AddSourceLocation(D->getLocEnd(), Record); 478 Code = serialization::DECL_OBJC_INTERFACE; 479} 480 481void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 482 VisitFieldDecl(D); 483 // FIXME: stable encoding for @public/@private/@protected/@package 484 Record.push_back(D->getAccessControl()); 485 Record.push_back(D->getSynthesize()); 486 487 if (!D->hasAttrs() && 488 !D->isImplicit() && 489 !D->isUsed(false) && 490 !D->isInvalidDecl() && 491 !D->isReferenced() && 492 !D->isModulePrivate() && 493 !D->getBitWidth() && 494 !D->hasExtInfo() && 495 D->getDeclName()) 496 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 497 498 Code = serialization::DECL_OBJC_IVAR; 499} 500 501void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 502 VisitObjCContainerDecl(D); 503 Record.push_back(D->isInitiallyForwardDecl()); 504 Record.push_back(D->isForwardDecl()); 505 Writer.AddSourceLocation(D->getLocEnd(), Record); 506 Record.push_back(D->protocol_size()); 507 for (ObjCProtocolDecl::protocol_iterator 508 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 509 Writer.AddDeclRef(*I, Record); 510 for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 511 PLEnd = D->protocol_loc_end(); 512 PL != PLEnd; ++PL) 513 Writer.AddSourceLocation(*PL, Record); 514 Code = serialization::DECL_OBJC_PROTOCOL; 515} 516 517void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 518 VisitFieldDecl(D); 519 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 520} 521 522void ASTDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) { 523 VisitDecl(D); 524 Writer.AddDeclRef(D->getForwardInterfaceDecl(), Record); 525 Writer.AddSourceLocation(D->getForwardDecl()->getLocation(), Record); 526 Code = serialization::DECL_OBJC_CLASS; 527} 528 529void ASTDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 530 VisitDecl(D); 531 Record.push_back(D->protocol_size()); 532 for (ObjCForwardProtocolDecl::protocol_iterator 533 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 534 Writer.AddDeclRef(*I, Record); 535 for (ObjCForwardProtocolDecl::protocol_loc_iterator 536 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 537 PL != PLEnd; ++PL) 538 Writer.AddSourceLocation(*PL, Record); 539 Code = serialization::DECL_OBJC_FORWARD_PROTOCOL; 540} 541 542void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 543 VisitObjCContainerDecl(D); 544 Writer.AddDeclRef(D->getClassInterface(), Record); 545 Record.push_back(D->protocol_size()); 546 for (ObjCCategoryDecl::protocol_iterator 547 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 548 Writer.AddDeclRef(*I, Record); 549 for (ObjCCategoryDecl::protocol_loc_iterator 550 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 551 PL != PLEnd; ++PL) 552 Writer.AddSourceLocation(*PL, Record); 553 Writer.AddDeclRef(D->getNextClassCategory(), Record); 554 Record.push_back(D->hasSynthBitfield()); 555 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 556 Code = serialization::DECL_OBJC_CATEGORY; 557} 558 559void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 560 VisitNamedDecl(D); 561 Writer.AddDeclRef(D->getClassInterface(), Record); 562 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 563} 564 565void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 566 VisitNamedDecl(D); 567 Writer.AddSourceLocation(D->getAtLoc(), Record); 568 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 569 // FIXME: stable encoding 570 Record.push_back((unsigned)D->getPropertyAttributes()); 571 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 572 // FIXME: stable encoding 573 Record.push_back((unsigned)D->getPropertyImplementation()); 574 Writer.AddDeclarationName(D->getGetterName(), Record); 575 Writer.AddDeclarationName(D->getSetterName(), Record); 576 Writer.AddDeclRef(D->getGetterMethodDecl(), Record); 577 Writer.AddDeclRef(D->getSetterMethodDecl(), Record); 578 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 579 Code = serialization::DECL_OBJC_PROPERTY; 580} 581 582void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 583 VisitObjCContainerDecl(D); 584 Writer.AddDeclRef(D->getClassInterface(), Record); 585 // Abstract class (no need to define a stable serialization::DECL code). 586} 587 588void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 589 VisitObjCImplDecl(D); 590 Writer.AddIdentifierRef(D->getIdentifier(), Record); 591 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 592} 593 594void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 595 VisitObjCImplDecl(D); 596 Writer.AddDeclRef(D->getSuperClass(), Record); 597 Writer.AddCXXCtorInitializers(D->IvarInitializers, D->NumIvarInitializers, 598 Record); 599 Record.push_back(D->hasSynthBitfield()); 600 Code = serialization::DECL_OBJC_IMPLEMENTATION; 601} 602 603void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 604 VisitDecl(D); 605 Writer.AddSourceLocation(D->getLocStart(), Record); 606 Writer.AddDeclRef(D->getPropertyDecl(), Record); 607 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 608 Writer.AddSourceLocation(D->getPropertyIvarDeclLoc(), Record); 609 Writer.AddStmt(D->getGetterCXXConstructor()); 610 Writer.AddStmt(D->getSetterCXXAssignment()); 611 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 612} 613 614void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 615 VisitDeclaratorDecl(D); 616 Record.push_back(D->isMutable()); 617 Record.push_back(D->getBitWidth()? 1 : D->hasInClassInitializer() ? 2 : 0); 618 if (D->getBitWidth()) 619 Writer.AddStmt(D->getBitWidth()); 620 else if (D->hasInClassInitializer()) 621 Writer.AddStmt(D->getInClassInitializer()); 622 if (!D->getDeclName()) 623 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); 624 625 if (!D->hasAttrs() && 626 !D->isImplicit() && 627 !D->isUsed(false) && 628 !D->isInvalidDecl() && 629 !D->isReferenced() && 630 !D->isModulePrivate() && 631 !D->getBitWidth() && 632 !D->hasInClassInitializer() && 633 !D->hasExtInfo() && 634 !ObjCIvarDecl::classofKind(D->getKind()) && 635 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 636 D->getDeclName()) 637 AbbrevToUse = Writer.getDeclFieldAbbrev(); 638 639 Code = serialization::DECL_FIELD; 640} 641 642void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 643 VisitValueDecl(D); 644 Record.push_back(D->getChainingSize()); 645 646 for (IndirectFieldDecl::chain_iterator 647 P = D->chain_begin(), 648 PEnd = D->chain_end(); P != PEnd; ++P) 649 Writer.AddDeclRef(*P, Record); 650 Code = serialization::DECL_INDIRECTFIELD; 651} 652 653void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 654 VisitRedeclarable(D); 655 VisitDeclaratorDecl(D); 656 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 657 Record.push_back(D->getStorageClassAsWritten()); 658 Record.push_back(D->isThreadSpecified()); 659 Record.push_back(D->hasCXXDirectInitializer()); 660 Record.push_back(D->isExceptionVariable()); 661 Record.push_back(D->isNRVOVariable()); 662 Record.push_back(D->isCXXForRangeDecl()); 663 Record.push_back(D->isARCPseudoStrong()); 664 Record.push_back(D->getInit() ? 1 : 0); 665 if (D->getInit()) 666 Writer.AddStmt(D->getInit()); 667 668 MemberSpecializationInfo *SpecInfo 669 = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0; 670 Record.push_back(SpecInfo != 0); 671 if (SpecInfo) { 672 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); 673 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 674 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); 675 } 676 677 if (!D->hasAttrs() && 678 !D->isImplicit() && 679 !D->isUsed(false) && 680 !D->isInvalidDecl() && 681 !D->isReferenced() && 682 D->getAccess() == AS_none && 683 !D->isModulePrivate() && 684 D->getDeclName().getNameKind() == DeclarationName::Identifier && 685 !D->hasExtInfo() && 686 D->RedeclLink.getNext() == D && 687 !D->hasCXXDirectInitializer() && 688 D->getInit() == 0 && 689 !isa<ParmVarDecl>(D) && 690 !SpecInfo) 691 AbbrevToUse = Writer.getDeclVarAbbrev(); 692 693 Code = serialization::DECL_VAR; 694} 695 696void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 697 VisitVarDecl(D); 698 Code = serialization::DECL_IMPLICIT_PARAM; 699} 700 701void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 702 VisitVarDecl(D); 703 Record.push_back(D->isObjCMethodParameter()); 704 Record.push_back(D->getFunctionScopeDepth()); 705 Record.push_back(D->getFunctionScopeIndex()); 706 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 707 Record.push_back(D->isKNRPromoted()); 708 Record.push_back(D->hasInheritedDefaultArg()); 709 Record.push_back(D->hasUninstantiatedDefaultArg()); 710 if (D->hasUninstantiatedDefaultArg()) 711 Writer.AddStmt(D->getUninstantiatedDefaultArg()); 712 Code = serialization::DECL_PARM_VAR; 713 714 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 715 716 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 717 // we dynamically check for the properties that we optimize for, but don't 718 // know are true of all PARM_VAR_DECLs. 719 if (!D->hasAttrs() && 720 !D->hasExtInfo() && 721 !D->isImplicit() && 722 !D->isUsed(false) && 723 D->getAccess() == AS_none && 724 !D->isModulePrivate() && 725 D->getStorageClass() == 0 && 726 !D->hasCXXDirectInitializer() && // Can params have this ever? 727 D->getFunctionScopeDepth() == 0 && 728 D->getObjCDeclQualifier() == 0 && 729 !D->isKNRPromoted() && 730 !D->hasInheritedDefaultArg() && 731 D->getInit() == 0 && 732 !D->hasUninstantiatedDefaultArg()) // No default expr. 733 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 734 735 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 736 // just us assuming it. 737 assert(!D->isInvalidDecl() && "Shouldn't emit invalid decls"); 738 assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread"); 739 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 740 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 741 assert(D->getPreviousDeclaration() == 0 && "PARM_VAR_DECL can't be redecl"); 742 assert(!D->isStaticDataMember() && 743 "PARM_VAR_DECL can't be static data member"); 744} 745 746void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 747 VisitDecl(D); 748 Writer.AddStmt(D->getAsmString()); 749 Writer.AddSourceLocation(D->getRParenLoc(), Record); 750 Code = serialization::DECL_FILE_SCOPE_ASM; 751} 752 753void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 754 VisitDecl(D); 755 Writer.AddStmt(D->getBody()); 756 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); 757 Record.push_back(D->param_size()); 758 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 759 P != PEnd; ++P) 760 Writer.AddDeclRef(*P, Record); 761 Record.push_back(D->capturesCXXThis()); 762 Record.push_back(D->getNumCaptures()); 763 for (BlockDecl::capture_iterator 764 i = D->capture_begin(), e = D->capture_end(); i != e; ++i) { 765 const BlockDecl::Capture &capture = *i; 766 Writer.AddDeclRef(capture.getVariable(), Record); 767 768 unsigned flags = 0; 769 if (capture.isByRef()) flags |= 1; 770 if (capture.isNested()) flags |= 2; 771 if (capture.hasCopyExpr()) flags |= 4; 772 Record.push_back(flags); 773 774 if (capture.hasCopyExpr()) Writer.AddStmt(capture.getCopyExpr()); 775 } 776 777 Code = serialization::DECL_BLOCK; 778} 779 780void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 781 VisitDecl(D); 782 Record.push_back(D->getLanguage()); 783 Writer.AddSourceLocation(D->getExternLoc(), Record); 784 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 785 Code = serialization::DECL_LINKAGE_SPEC; 786} 787 788void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 789 VisitNamedDecl(D); 790 Writer.AddSourceLocation(D->getLocStart(), Record); 791 Code = serialization::DECL_LABEL; 792} 793 794 795void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 796 VisitNamedDecl(D); 797 Record.push_back(D->isInline()); 798 Writer.AddSourceLocation(D->getLocStart(), Record); 799 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 800 Writer.AddDeclRef(D->getNextNamespace(), Record); 801 802 // Only write one reference--original or anonymous 803 Record.push_back(D->isOriginalNamespace()); 804 if (D->isOriginalNamespace()) 805 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 806 else 807 Writer.AddDeclRef(D->getOriginalNamespace(), Record); 808 Code = serialization::DECL_NAMESPACE; 809 810 if (Writer.hasChain() && !D->isOriginalNamespace() && 811 D->getOriginalNamespace()->isFromASTFile()) { 812 NamespaceDecl *NS = D->getOriginalNamespace(); 813 Writer.AddUpdatedDeclContext(NS); 814 815 // Make sure all visible decls are written. They will be recorded later. 816 NS->lookup(DeclarationName()); 817 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(NS->getLookupPtr()); 818 if (Map) { 819 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 820 D != DEnd; ++D) { 821 DeclContext::lookup_result Result = D->second.getLookupResult(); 822 while (Result.first != Result.second) { 823 Writer.GetDeclRef(*Result.first); 824 ++Result.first; 825 } 826 } 827 } 828 } 829 830 if (Writer.hasChain() && D->isAnonymousNamespace() && !D->getNextNamespace()){ 831 // This is a most recent reopening of the anonymous namespace. If its parent 832 // is in a previous PCH (or is the TU), mark that parent for update, because 833 // the original namespace always points to the latest re-opening of its 834 // anonymous namespace. 835 Decl *Parent = cast<Decl>( 836 D->getParent()->getRedeclContext()->getPrimaryContext()); 837 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 838 ASTWriter::UpdateRecord &Record = Writer.DeclUpdates[Parent]; 839 Record.push_back(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE); 840 Writer.AddDeclRef(D, Record); 841 } 842 } 843} 844 845void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 846 VisitNamedDecl(D); 847 Writer.AddSourceLocation(D->getNamespaceLoc(), Record); 848 Writer.AddSourceLocation(D->getTargetNameLoc(), Record); 849 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 850 Writer.AddDeclRef(D->getNamespace(), Record); 851 Code = serialization::DECL_NAMESPACE_ALIAS; 852} 853 854void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 855 VisitNamedDecl(D); 856 Writer.AddSourceLocation(D->getUsingLocation(), Record); 857 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 858 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 859 Writer.AddDeclRef(D->FirstUsingShadow, Record); 860 Record.push_back(D->isTypeName()); 861 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); 862 Code = serialization::DECL_USING; 863} 864 865void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 866 VisitNamedDecl(D); 867 Writer.AddDeclRef(D->getTargetDecl(), Record); 868 Writer.AddDeclRef(D->UsingOrNextShadow, Record); 869 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); 870 Code = serialization::DECL_USING_SHADOW; 871} 872 873void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 874 VisitNamedDecl(D); 875 Writer.AddSourceLocation(D->getUsingLoc(), Record); 876 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); 877 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 878 Writer.AddDeclRef(D->getNominatedNamespace(), Record); 879 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); 880 Code = serialization::DECL_USING_DIRECTIVE; 881} 882 883void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 884 VisitValueDecl(D); 885 Writer.AddSourceLocation(D->getUsingLoc(), Record); 886 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 887 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 888 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 889} 890 891void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 892 UnresolvedUsingTypenameDecl *D) { 893 VisitTypeDecl(D); 894 Writer.AddSourceLocation(D->getTypenameLoc(), Record); 895 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 896 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 897} 898 899void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 900 VisitRecordDecl(D); 901 902 CXXRecordDecl *DefinitionDecl = 0; 903 if (D->DefinitionData) 904 DefinitionDecl = D->DefinitionData->Definition; 905 Writer.AddDeclRef(DefinitionDecl, Record); 906 if (D == DefinitionDecl) 907 Writer.AddCXXDefinitionData(D, Record); 908 909 enum { 910 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 911 }; 912 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 913 Record.push_back(CXXRecTemplate); 914 Writer.AddDeclRef(TemplD, Record); 915 } else if (MemberSpecializationInfo *MSInfo 916 = D->getMemberSpecializationInfo()) { 917 Record.push_back(CXXRecMemberSpecialization); 918 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); 919 Record.push_back(MSInfo->getTemplateSpecializationKind()); 920 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); 921 } else { 922 Record.push_back(CXXRecNotTemplate); 923 } 924 925 // Store the key function to avoid deserializing every method so we can 926 // compute it. 927 if (D->IsCompleteDefinition) 928 Writer.AddDeclRef(Context.getKeyFunction(D), Record); 929 930 Code = serialization::DECL_CXX_RECORD; 931} 932 933void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 934 VisitFunctionDecl(D); 935 Record.push_back(D->size_overridden_methods()); 936 for (CXXMethodDecl::method_iterator 937 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 938 I != E; ++I) 939 Writer.AddDeclRef(*I, Record); 940 Code = serialization::DECL_CXX_METHOD; 941} 942 943void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 944 VisitCXXMethodDecl(D); 945 946 Record.push_back(D->IsExplicitSpecified); 947 Record.push_back(D->ImplicitlyDefined); 948 Writer.AddCXXCtorInitializers(D->CtorInitializers, D->NumCtorInitializers, 949 Record); 950 951 Code = serialization::DECL_CXX_CONSTRUCTOR; 952} 953 954void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 955 VisitCXXMethodDecl(D); 956 957 Record.push_back(D->ImplicitlyDefined); 958 Writer.AddDeclRef(D->OperatorDelete, Record); 959 960 Code = serialization::DECL_CXX_DESTRUCTOR; 961} 962 963void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 964 VisitCXXMethodDecl(D); 965 Record.push_back(D->IsExplicitSpecified); 966 Code = serialization::DECL_CXX_CONVERSION; 967} 968 969void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 970 VisitDecl(D); 971 Writer.AddSourceLocation(D->getColonLoc(), Record); 972 Code = serialization::DECL_ACCESS_SPEC; 973} 974 975void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 976 VisitDecl(D); 977 Record.push_back(D->Friend.is<TypeSourceInfo*>()); 978 if (D->Friend.is<TypeSourceInfo*>()) 979 Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record); 980 else 981 Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record); 982 Writer.AddDeclRef(D->getNextFriend(), Record); 983 Record.push_back(D->UnsupportedFriend); 984 Writer.AddSourceLocation(D->FriendLoc, Record); 985 Code = serialization::DECL_FRIEND; 986} 987 988void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 989 VisitDecl(D); 990 Record.push_back(D->getNumTemplateParameters()); 991 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 992 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record); 993 Record.push_back(D->getFriendDecl() != 0); 994 if (D->getFriendDecl()) 995 Writer.AddDeclRef(D->getFriendDecl(), Record); 996 else 997 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 998 Writer.AddSourceLocation(D->getFriendLoc(), Record); 999 Code = serialization::DECL_FRIEND_TEMPLATE; 1000} 1001 1002void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1003 VisitNamedDecl(D); 1004 1005 Writer.AddDeclRef(D->getTemplatedDecl(), Record); 1006 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1007} 1008 1009void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1010 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1011 // getCommonPtr() can be used while this is still initializing. 1012 1013 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 1014 if (D->getPreviousDeclaration()) 1015 Writer.AddDeclRef(D->getFirstDeclaration(), Record); 1016 1017 if (D->getPreviousDeclaration() == 0) { 1018 // This TemplateDecl owns the CommonPtr; write it. 1019 assert(D->isCanonicalDecl()); 1020 1021 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); 1022 if (D->getInstantiatedFromMemberTemplate()) 1023 Record.push_back(D->isMemberSpecialization()); 1024 1025 Writer.AddDeclRef(D->getCommonPtr()->Latest, Record); 1026 } else { 1027 RedeclarableTemplateDecl *First = D->getFirstDeclaration(); 1028 assert(First != D); 1029 // If this is a most recent redeclaration that is pointed to by a first decl 1030 // in a chained PCH, keep track of the association with the map so we can 1031 // update the first decl during AST reading. 1032 if (First->getMostRecentDeclaration() == D && 1033 First->isFromASTFile() && !D->isFromASTFile()) { 1034 assert(Writer.FirstLatestDecls.find(First)==Writer.FirstLatestDecls.end() 1035 && "The latest is already set"); 1036 Writer.FirstLatestDecls[First] = D; 1037 } 1038 } 1039 1040 VisitTemplateDecl(D); 1041 Record.push_back(D->getIdentifierNamespace()); 1042} 1043 1044void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1045 VisitRedeclarableTemplateDecl(D); 1046 1047 if (D->getPreviousDeclaration() == 0) { 1048 typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy; 1049 CTSDSetTy &CTSDSet = D->getSpecializations(); 1050 Record.push_back(CTSDSet.size()); 1051 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) { 1052 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 1053 Writer.AddDeclRef(&*I, Record); 1054 } 1055 1056 typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy; 1057 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations(); 1058 Record.push_back(CTPSDSet.size()); 1059 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) { 1060 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 1061 Writer.AddDeclRef(&*I, Record); 1062 } 1063 1064 // InjectedClassNameType is computed, no need to write it. 1065 } 1066 Code = serialization::DECL_CLASS_TEMPLATE; 1067} 1068 1069void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1070 ClassTemplateSpecializationDecl *D) { 1071 VisitCXXRecordDecl(D); 1072 1073 llvm::PointerUnion<ClassTemplateDecl *, 1074 ClassTemplatePartialSpecializationDecl *> InstFrom 1075 = D->getSpecializedTemplateOrPartial(); 1076 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1077 Writer.AddDeclRef(InstFromD, Record); 1078 } else { 1079 Writer.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>(), 1080 Record); 1081 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 1082 } 1083 1084 // Explicit info. 1085 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 1086 if (D->getTypeAsWritten()) { 1087 Writer.AddSourceLocation(D->getExternLoc(), Record); 1088 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 1089 } 1090 1091 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 1092 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 1093 Record.push_back(D->getSpecializationKind()); 1094 1095 if (D->isCanonicalDecl()) { 1096 // When reading, we'll add it to the folding set of the following template. 1097 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 1098 } 1099 1100 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1101} 1102 1103void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1104 ClassTemplatePartialSpecializationDecl *D) { 1105 VisitClassTemplateSpecializationDecl(D); 1106 1107 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1108 1109 Record.push_back(D->getNumTemplateArgsAsWritten()); 1110 for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i) 1111 Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record); 1112 1113 Record.push_back(D->getSequenceNumber()); 1114 1115 // These are read/set from/to the first declaration. 1116 if (D->getPreviousDeclaration() == 0) { 1117 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 1118 Record.push_back(D->isMemberSpecialization()); 1119 } 1120 1121 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1122} 1123 1124void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1125 ClassScopeFunctionSpecializationDecl *D) { 1126 VisitDecl(D); 1127 Writer.AddDeclRef(D->getSpecialization(), Record); 1128 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1129} 1130 1131 1132void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1133 VisitRedeclarableTemplateDecl(D); 1134 1135 if (D->getPreviousDeclaration() == 0) { 1136 // This FunctionTemplateDecl owns the CommonPtr; write it. 1137 1138 // Write the function specialization declarations. 1139 Record.push_back(D->getSpecializations().size()); 1140 for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator 1141 I = D->getSpecializations().begin(), 1142 E = D->getSpecializations().end() ; I != E; ++I) { 1143 assert(I->Function->isCanonicalDecl() && 1144 "Expected only canonical decls in set"); 1145 Writer.AddDeclRef(I->Function, Record); 1146 } 1147 } 1148 Code = serialization::DECL_FUNCTION_TEMPLATE; 1149} 1150 1151void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1152 VisitTypeDecl(D); 1153 1154 Record.push_back(D->wasDeclaredWithTypename()); 1155 Record.push_back(D->defaultArgumentWasInherited()); 1156 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 1157 1158 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1159} 1160 1161void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1162 // For an expanded parameter pack, record the number of expansion types here 1163 // so that it's easier for 1164 if (D->isExpandedParameterPack()) 1165 Record.push_back(D->getNumExpansionTypes()); 1166 1167 VisitDeclaratorDecl(D); 1168 // TemplateParmPosition. 1169 Record.push_back(D->getDepth()); 1170 Record.push_back(D->getPosition()); 1171 1172 if (D->isExpandedParameterPack()) { 1173 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1174 Writer.AddTypeRef(D->getExpansionType(I), Record); 1175 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record); 1176 } 1177 1178 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1179 } else { 1180 // Rest of NonTypeTemplateParmDecl. 1181 Record.push_back(D->isParameterPack()); 1182 Record.push_back(D->getDefaultArgument() != 0); 1183 if (D->getDefaultArgument()) { 1184 Writer.AddStmt(D->getDefaultArgument()); 1185 Record.push_back(D->defaultArgumentWasInherited()); 1186 } 1187 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1188 } 1189} 1190 1191void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1192 VisitTemplateDecl(D); 1193 // TemplateParmPosition. 1194 Record.push_back(D->getDepth()); 1195 Record.push_back(D->getPosition()); 1196 // Rest of TemplateTemplateParmDecl. 1197 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1198 Record.push_back(D->defaultArgumentWasInherited()); 1199 Record.push_back(D->isParameterPack()); 1200 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1201} 1202 1203void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1204 VisitRedeclarableTemplateDecl(D); 1205 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1206} 1207 1208void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1209 VisitDecl(D); 1210 Writer.AddStmt(D->getAssertExpr()); 1211 Writer.AddStmt(D->getMessage()); 1212 Writer.AddSourceLocation(D->getRParenLoc(), Record); 1213 Code = serialization::DECL_STATIC_ASSERT; 1214} 1215 1216/// \brief Emit the DeclContext part of a declaration context decl. 1217/// 1218/// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1219/// block for this declaration context is stored. May be 0 to indicate 1220/// that there are no declarations stored within this context. 1221/// 1222/// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1223/// block for this declaration context is stored. May be 0 to indicate 1224/// that there are no declarations visible from this context. Note 1225/// that this value will not be emitted for non-primary declaration 1226/// contexts. 1227void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1228 uint64_t VisibleOffset) { 1229 Record.push_back(LexicalOffset); 1230 Record.push_back(VisibleOffset); 1231} 1232 1233template <typename T> 1234void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1235 enum { NoRedeclaration = 0, PointsToPrevious, PointsToLatest }; 1236 if (D->RedeclLink.getNext() == D) { 1237 Record.push_back(NoRedeclaration); 1238 } else { 1239 if (D->RedeclLink.NextIsPrevious()) { 1240 Record.push_back(PointsToPrevious); 1241 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 1242 Writer.AddDeclRef(D->getFirstDeclaration(), Record); 1243 } else { 1244 Record.push_back(PointsToLatest); 1245 Writer.AddDeclRef(D->RedeclLink.getPointer(), Record); 1246 } 1247 } 1248 1249 T *First = D->getFirstDeclaration(); 1250 T *ThisDecl = static_cast<T*>(D); 1251 // If this is a most recent redeclaration that is pointed to by a first decl 1252 // in a chained PCH, keep track of the association with the map so we can 1253 // update the first decl during AST reading. 1254 if (ThisDecl != First && First->getMostRecentDeclaration() == ThisDecl && 1255 First->isFromASTFile() && !ThisDecl->isFromASTFile()) { 1256 assert(Writer.FirstLatestDecls.find(First) == Writer.FirstLatestDecls.end() 1257 && "The latest is already set"); 1258 Writer.FirstLatestDecls[First] = ThisDecl; 1259 } 1260} 1261 1262//===----------------------------------------------------------------------===// 1263// ASTWriter Implementation 1264//===----------------------------------------------------------------------===// 1265 1266void ASTWriter::WriteDeclsBlockAbbrevs() { 1267 using namespace llvm; 1268 1269 BitCodeAbbrev *Abv; 1270 1271 // Abbreviation for DECL_FIELD 1272 Abv = new BitCodeAbbrev(); 1273 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1274 // Decl 1275 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1276 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1277 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1278 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1279 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1280 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1281 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1282 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1283 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1284 // NamedDecl 1285 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1286 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1287 // ValueDecl 1288 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1289 // DeclaratorDecl 1290 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1291 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1292 // FieldDecl 1293 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1294 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1295 // Type Source Info 1296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1297 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1298 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1299 DeclFieldAbbrev = Stream.EmitAbbrev(Abv); 1300 1301 // Abbreviation for DECL_OBJC_IVAR 1302 Abv = new BitCodeAbbrev(); 1303 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1304 // Decl 1305 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1306 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1307 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1308 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1309 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1310 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1311 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1312 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1313 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1314 // NamedDecl 1315 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1316 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1317 // ValueDecl 1318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1319 // DeclaratorDecl 1320 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1321 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1322 // FieldDecl 1323 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1324 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1325 // ObjC Ivar 1326 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1327 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1328 // Type Source Info 1329 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1330 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1331 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1332 DeclObjCIvarAbbrev = Stream.EmitAbbrev(Abv); 1333 1334 // Abbreviation for DECL_ENUM 1335 Abv = new BitCodeAbbrev(); 1336 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1337 // Redeclarable 1338 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1339 // Decl 1340 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1341 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1342 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1343 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1344 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1345 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1346 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1347 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1348 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1349 // NamedDecl 1350 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1351 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1352 // TypeDecl 1353 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1354 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1355 // TagDecl 1356 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1357 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1358 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1359 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1360 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1361 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1362 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1363 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl 1364 // EnumDecl 1365 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1366 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1367 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1368 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1369 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1370 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1371 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1372 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1373 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1374 // DC 1375 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1376 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1377 DeclEnumAbbrev = Stream.EmitAbbrev(Abv); 1378 1379 // Abbreviation for DECL_RECORD 1380 Abv = new BitCodeAbbrev(); 1381 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1382 // Redeclarable 1383 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1384 // Decl 1385 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1386 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1387 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1388 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1389 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1390 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1391 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1392 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1393 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1394 // NamedDecl 1395 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1396 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1397 // TypeDecl 1398 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1399 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1400 // TagDecl 1401 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1402 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1403 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1404 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1405 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1406 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1407 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1408 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl 1409 // RecordDecl 1410 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1411 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1412 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1413 // DC 1414 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1415 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1416 DeclRecordAbbrev = Stream.EmitAbbrev(Abv); 1417 1418 // Abbreviation for DECL_PARM_VAR 1419 Abv = new BitCodeAbbrev(); 1420 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1421 // Redeclarable 1422 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1423 // Decl 1424 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1425 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1426 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1427 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1428 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1429 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1430 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1431 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1432 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1433 // NamedDecl 1434 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1435 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1436 // ValueDecl 1437 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1438 // DeclaratorDecl 1439 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1440 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1441 // VarDecl 1442 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1443 Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten 1444 Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified 1445 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1446 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable 1447 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable 1448 Abv->Add(BitCodeAbbrevOp(0)); // isCXXForRangeDecl 1449 Abv->Add(BitCodeAbbrevOp(0)); // isARCPseudoStrong 1450 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1451 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1452 // ParmVarDecl 1453 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1454 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1455 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1456 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1457 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1458 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1459 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1460 // Type Source Info 1461 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1462 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1463 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1464 DeclParmVarAbbrev = Stream.EmitAbbrev(Abv); 1465 1466 // Abbreviation for DECL_TYPEDEF 1467 Abv = new BitCodeAbbrev(); 1468 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1469 // Decl 1470 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1471 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1472 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1473 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1474 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1475 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1476 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1477 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1478 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1479 // NamedDecl 1480 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1481 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1482 // TypeDecl 1483 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1484 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1485 // TypedefDecl 1486 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1487 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1488 DeclTypedefAbbrev = Stream.EmitAbbrev(Abv); 1489 1490 // Abbreviation for DECL_VAR 1491 Abv = new BitCodeAbbrev(); 1492 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1493 // Redeclarable 1494 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1495 // Decl 1496 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1497 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1498 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1499 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1500 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1501 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1502 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1503 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1504 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1505 // NamedDecl 1506 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1507 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1508 // ValueDecl 1509 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1510 // DeclaratorDecl 1511 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1512 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1513 // VarDecl 1514 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClass 1515 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClassAsWritten 1516 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isThreadSpecified 1517 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CXXDirectInitializer 1518 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 1519 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 1520 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 1521 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 1522 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasInit 1523 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasMemberSpecInfo 1524 // Type Source Info 1525 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1526 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1527 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1528 DeclVarAbbrev = Stream.EmitAbbrev(Abv); 1529 1530 // Abbreviation for EXPR_DECL_REF 1531 Abv = new BitCodeAbbrev(); 1532 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 1533 //Stmt 1534 //Expr 1535 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1536 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1537 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1538 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1539 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1540 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1541 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1542 //DeclRefExpr 1543 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 1544 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 1545 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 1546 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 1547 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 1548 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1549 DeclRefExprAbbrev = Stream.EmitAbbrev(Abv); 1550 1551 // Abbreviation for EXPR_INTEGER_LITERAL 1552 Abv = new BitCodeAbbrev(); 1553 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 1554 //Stmt 1555 //Expr 1556 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1557 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1558 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1559 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1560 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1561 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1562 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1563 //Integer Literal 1564 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1565 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 1566 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 1567 IntegerLiteralAbbrev = Stream.EmitAbbrev(Abv); 1568 1569 // Abbreviation for EXPR_CHARACTER_LITERAL 1570 Abv = new BitCodeAbbrev(); 1571 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_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 //Character Literal 1582 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 1583 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1584 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //IsWide 1585 CharacterLiteralAbbrev = Stream.EmitAbbrev(Abv); 1586 1587 Abv = new BitCodeAbbrev(); 1588 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1589 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1590 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1591 1592 Abv = new BitCodeAbbrev(); 1593 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1594 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1595 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1596 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1597} 1598 1599/// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1600/// consumers of the AST. 1601/// 1602/// Such decls will always be deserialized from the AST file, so we would like 1603/// this to be as restrictive as possible. Currently the predicate is driven by 1604/// code generation requirements, if other clients have a different notion of 1605/// what is "required" then we may have to consider an alternate scheme where 1606/// clients can iterate over the top-level decls and get information on them, 1607/// without necessary deserializing them. We could explicitly require such 1608/// clients to use a separate API call to "realize" the decl. This should be 1609/// relatively painless since they would presumably only do it for top-level 1610/// decls. 1611static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 1612 // An ObjCMethodDecl is never considered as "required" because its 1613 // implementation container always is. 1614 1615 // File scoped assembly or obj-c implementation must be seen. 1616 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D)) 1617 return true; 1618 1619 return Context.DeclMustBeEmitted(D); 1620} 1621 1622void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 1623 // Switch case IDs are per Decl. 1624 ClearSwitchCaseIDs(); 1625 1626 RecordData Record; 1627 ASTDeclWriter W(*this, Context, Record); 1628 1629 // If this declaration is also a DeclContext, write blocks for the 1630 // declarations that lexically stored inside its context and those 1631 // declarations that are visible from its context. These blocks 1632 // are written before the declaration itself so that we can put 1633 // their offsets into the record for the declaration. 1634 uint64_t LexicalOffset = 0; 1635 uint64_t VisibleOffset = 0; 1636 DeclContext *DC = dyn_cast<DeclContext>(D); 1637 if (DC) { 1638 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 1639 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 1640 } 1641 1642 // Determine the ID for this declaration 1643 serialization::DeclID &IDR = DeclIDs[D]; 1644 if (IDR == 0) 1645 IDR = NextDeclID++; 1646 serialization::DeclID ID = IDR; 1647 1648 if (ID < FirstDeclID) { 1649 // We're replacing a decl in a previous file. 1650 ReplacedDecls.push_back(ReplacedDeclInfo(ID, Stream.GetCurrentBitNo(), 1651 D->getLocation())); 1652 } else { 1653 unsigned Index = ID - FirstDeclID; 1654 1655 // Record the offset for this declaration 1656 SourceLocation Loc = D->getLocation(); 1657 if (DeclOffsets.size() == Index) 1658 DeclOffsets.push_back(DeclOffset(Loc, Stream.GetCurrentBitNo())); 1659 else if (DeclOffsets.size() < Index) { 1660 DeclOffsets.resize(Index+1); 1661 DeclOffsets[Index].setLocation(Loc); 1662 DeclOffsets[Index].BitOffset = Stream.GetCurrentBitNo(); 1663 } 1664 1665 SourceManager &SM = Context.getSourceManager(); 1666 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 1667 associateDeclWithFile(D, ID); 1668 } 1669 1670 // Build and emit a record for this declaration 1671 Record.clear(); 1672 W.Code = (serialization::DeclCode)0; 1673 W.AbbrevToUse = 0; 1674 W.Visit(D); 1675 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 1676 1677 if (!W.Code) 1678 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 1679 D->getDeclKindName() + "'"); 1680 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 1681 1682 // Flush any expressions that were written as part of this declaration. 1683 FlushStmts(); 1684 1685 // Flush C++ base specifiers, if there are any. 1686 FlushCXXBaseSpecifiers(); 1687 1688 // Note "external" declarations so that we can add them to a record in the 1689 // AST file later. 1690 // 1691 // FIXME: This should be renamed, the predicate is much more complicated. 1692 if (isRequiredDecl(D, Context)) 1693 ExternalDefinitions.push_back(ID); 1694} 1695