ASTWriterDecl.cpp revision 5e1cdac63c3d9c9b32fa41fa0b2d242a58a20d49
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 "llvm/ADT/Twine.h" 22#include "llvm/Bitcode/BitstreamWriter.h" 23#include "llvm/Support/ErrorHandling.h" 24using namespace clang; 25using namespace serialization; 26 27//===----------------------------------------------------------------------===// 28// Declaration serialization 29//===----------------------------------------------------------------------===// 30 31namespace clang { 32 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 33 34 ASTWriter &Writer; 35 ASTContext &Context; 36 typedef ASTWriter::RecordData RecordData; 37 RecordData &Record; 38 39 public: 40 serialization::DeclCode Code; 41 unsigned AbbrevToUse; 42 43 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, RecordData &Record) 44 : Writer(Writer), Context(Context), Record(Record) { 45 } 46 47 void Visit(Decl *D); 48 49 void VisitDecl(Decl *D); 50 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 51 void VisitNamedDecl(NamedDecl *D); 52 void VisitLabelDecl(LabelDecl *LD); 53 void VisitNamespaceDecl(NamespaceDecl *D); 54 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 55 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 56 void VisitTypeDecl(TypeDecl *D); 57 void VisitTypedefDecl(TypedefDecl *D); 58 void VisitTypeAliasDecl(TypeAliasDecl *D); 59 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 60 void VisitTagDecl(TagDecl *D); 61 void VisitEnumDecl(EnumDecl *D); 62 void VisitRecordDecl(RecordDecl *D); 63 void VisitCXXRecordDecl(CXXRecordDecl *D); 64 void VisitClassTemplateSpecializationDecl( 65 ClassTemplateSpecializationDecl *D); 66 void VisitClassTemplatePartialSpecializationDecl( 67 ClassTemplatePartialSpecializationDecl *D); 68 void VisitClassScopeFunctionSpecializationDecl( 69 ClassScopeFunctionSpecializationDecl *D); 70 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 71 void VisitValueDecl(ValueDecl *D); 72 void VisitEnumConstantDecl(EnumConstantDecl *D); 73 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 74 void VisitDeclaratorDecl(DeclaratorDecl *D); 75 void VisitFunctionDecl(FunctionDecl *D); 76 void VisitCXXMethodDecl(CXXMethodDecl *D); 77 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 78 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 79 void VisitCXXConversionDecl(CXXConversionDecl *D); 80 void VisitFieldDecl(FieldDecl *D); 81 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 82 void VisitVarDecl(VarDecl *D); 83 void VisitImplicitParamDecl(ImplicitParamDecl *D); 84 void VisitParmVarDecl(ParmVarDecl *D); 85 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 86 void VisitTemplateDecl(TemplateDecl *D); 87 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 88 void VisitClassTemplateDecl(ClassTemplateDecl *D); 89 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 90 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 91 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 92 void VisitUsingDecl(UsingDecl *D); 93 void VisitUsingShadowDecl(UsingShadowDecl *D); 94 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 95 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 96 void VisitAccessSpecDecl(AccessSpecDecl *D); 97 void VisitFriendDecl(FriendDecl *D); 98 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 99 void VisitStaticAssertDecl(StaticAssertDecl *D); 100 void VisitBlockDecl(BlockDecl *D); 101 102 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 103 uint64_t VisibleOffset); 104 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 105 106 107 // FIXME: Put in the same order is DeclNodes.td? 108 void VisitObjCMethodDecl(ObjCMethodDecl *D); 109 void VisitObjCContainerDecl(ObjCContainerDecl *D); 110 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 111 void VisitObjCIvarDecl(ObjCIvarDecl *D); 112 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 113 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 114 void VisitObjCClassDecl(ObjCClassDecl *D); 115 void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 116 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 117 void VisitObjCImplDecl(ObjCImplDecl *D); 118 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 119 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 120 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 121 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 122 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 123 }; 124} 125 126void ASTDeclWriter::Visit(Decl *D) { 127 DeclVisitor<ASTDeclWriter>::Visit(D); 128 129 // Source locations require array (variable-length) abbreviations. The 130 // abbreviation infrastructure requires that arrays are encoded last, so 131 // we handle it here in the case of those classes derived from DeclaratorDecl 132 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)){ 133 Writer.AddTypeSourceInfo(DD->getTypeSourceInfo(), Record); 134 } 135 136 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 137 // have been written. We want it last because we will not read it back when 138 // retrieving it from the AST, we'll just lazily set the offset. 139 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 140 Record.push_back(FD->doesThisDeclarationHaveABody()); 141 if (FD->doesThisDeclarationHaveABody()) 142 Writer.AddStmt(FD->getBody()); 143 } 144} 145 146void ASTDeclWriter::VisitDecl(Decl *D) { 147 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 148 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 149 Writer.AddSourceLocation(D->getLocation(), 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 VisitTypeDecl(D); 202 VisitRedeclarable(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 VisitDeclaratorDecl(D); 293 VisitRedeclarable(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 // FIXME: stable encoding for @required/@optional 406 Record.push_back(D->getImplementationControl()); 407 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway 408 Record.push_back(D->getObjCDeclQualifier()); 409 Record.push_back(D->hasRelatedResultType()); 410 Writer.AddTypeRef(D->getResultType(), Record); 411 Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record); 412 Writer.AddSourceLocation(D->getLocEnd(), Record); 413 Record.push_back(D->param_size()); 414 for (ObjCMethodDecl::param_iterator P = D->param_begin(), 415 PEnd = D->param_end(); P != PEnd; ++P) 416 Writer.AddDeclRef(*P, Record); 417 418 Record.push_back(D->SelLocsKind); 419 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 420 SourceLocation *SelLocs = D->getStoredSelLocs(); 421 Record.push_back(NumStoredSelLocs); 422 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 423 Writer.AddSourceLocation(SelLocs[i], Record); 424 425 Code = serialization::DECL_OBJC_METHOD; 426} 427 428void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 429 VisitNamedDecl(D); 430 Writer.AddSourceLocation(D->getAtStartLoc(), Record); 431 Writer.AddSourceRange(D->getAtEndRange(), Record); 432 // Abstract class (no need to define a stable serialization::DECL code). 433} 434 435void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 436 VisitObjCContainerDecl(D); 437 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 438 Writer.AddDeclRef(D->getSuperClass(), Record); 439 440 // Write out the protocols that are directly referenced by the @interface. 441 Record.push_back(D->ReferencedProtocols.size()); 442 for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), 443 PEnd = D->protocol_end(); 444 P != PEnd; ++P) 445 Writer.AddDeclRef(*P, Record); 446 for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 447 PLEnd = D->protocol_loc_end(); 448 PL != PLEnd; ++PL) 449 Writer.AddSourceLocation(*PL, Record); 450 451 // Write out the protocols that are transitively referenced. 452 Record.push_back(D->AllReferencedProtocols.size()); 453 for (ObjCList<ObjCProtocolDecl>::iterator 454 P = D->AllReferencedProtocols.begin(), 455 PEnd = D->AllReferencedProtocols.end(); 456 P != PEnd; ++P) 457 Writer.AddDeclRef(*P, Record); 458 459 // Write out the ivars. 460 Record.push_back(D->ivar_size()); 461 for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), 462 IEnd = D->ivar_end(); I != IEnd; ++I) 463 Writer.AddDeclRef(*I, Record); 464 Writer.AddDeclRef(D->getCategoryList(), Record); 465 Record.push_back(D->isForwardDecl()); 466 Record.push_back(D->isImplicitInterfaceDecl()); 467 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 468 Writer.AddSourceLocation(D->getLocEnd(), Record); 469 Code = serialization::DECL_OBJC_INTERFACE; 470} 471 472void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 473 VisitFieldDecl(D); 474 // FIXME: stable encoding for @public/@private/@protected/@package 475 Record.push_back(D->getAccessControl()); 476 Record.push_back(D->getSynthesize()); 477 478 if (!D->hasAttrs() && 479 !D->isImplicit() && 480 !D->isUsed(false) && 481 !D->isInvalidDecl() && 482 !D->isReferenced() && 483 !D->isModulePrivate() && 484 !D->getBitWidth() && 485 !D->hasExtInfo() && 486 D->getDeclName()) 487 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 488 489 Code = serialization::DECL_OBJC_IVAR; 490} 491 492void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 493 VisitObjCContainerDecl(D); 494 Record.push_back(D->isForwardDecl()); 495 Writer.AddSourceLocation(D->getLocEnd(), Record); 496 Record.push_back(D->protocol_size()); 497 for (ObjCProtocolDecl::protocol_iterator 498 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 499 Writer.AddDeclRef(*I, Record); 500 for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 501 PLEnd = D->protocol_loc_end(); 502 PL != PLEnd; ++PL) 503 Writer.AddSourceLocation(*PL, Record); 504 Code = serialization::DECL_OBJC_PROTOCOL; 505} 506 507void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 508 VisitFieldDecl(D); 509 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 510} 511 512void ASTDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) { 513 VisitDecl(D); 514 Writer.AddDeclRef(D->getForwardInterfaceDecl(), Record); 515 Writer.AddSourceLocation(D->getForwardDecl()->getLocation(), Record); 516 Code = serialization::DECL_OBJC_CLASS; 517} 518 519void ASTDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 520 VisitDecl(D); 521 Record.push_back(D->protocol_size()); 522 for (ObjCForwardProtocolDecl::protocol_iterator 523 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 524 Writer.AddDeclRef(*I, Record); 525 for (ObjCForwardProtocolDecl::protocol_loc_iterator 526 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 527 PL != PLEnd; ++PL) 528 Writer.AddSourceLocation(*PL, Record); 529 Code = serialization::DECL_OBJC_FORWARD_PROTOCOL; 530} 531 532void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 533 VisitObjCContainerDecl(D); 534 Writer.AddDeclRef(D->getClassInterface(), Record); 535 Record.push_back(D->protocol_size()); 536 for (ObjCCategoryDecl::protocol_iterator 537 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 538 Writer.AddDeclRef(*I, Record); 539 for (ObjCCategoryDecl::protocol_loc_iterator 540 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 541 PL != PLEnd; ++PL) 542 Writer.AddSourceLocation(*PL, Record); 543 Writer.AddDeclRef(D->getNextClassCategory(), Record); 544 Record.push_back(D->hasSynthBitfield()); 545 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 546 Code = serialization::DECL_OBJC_CATEGORY; 547} 548 549void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 550 VisitNamedDecl(D); 551 Writer.AddDeclRef(D->getClassInterface(), Record); 552 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 553} 554 555void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 556 VisitNamedDecl(D); 557 Writer.AddSourceLocation(D->getAtLoc(), Record); 558 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 559 // FIXME: stable encoding 560 Record.push_back((unsigned)D->getPropertyAttributes()); 561 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 562 // FIXME: stable encoding 563 Record.push_back((unsigned)D->getPropertyImplementation()); 564 Writer.AddDeclarationName(D->getGetterName(), Record); 565 Writer.AddDeclarationName(D->getSetterName(), Record); 566 Writer.AddDeclRef(D->getGetterMethodDecl(), Record); 567 Writer.AddDeclRef(D->getSetterMethodDecl(), Record); 568 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 569 Code = serialization::DECL_OBJC_PROPERTY; 570} 571 572void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 573 VisitObjCContainerDecl(D); 574 Writer.AddDeclRef(D->getClassInterface(), Record); 575 // Abstract class (no need to define a stable serialization::DECL code). 576} 577 578void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 579 VisitObjCImplDecl(D); 580 Writer.AddIdentifierRef(D->getIdentifier(), Record); 581 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 582} 583 584void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 585 VisitObjCImplDecl(D); 586 Writer.AddDeclRef(D->getSuperClass(), Record); 587 Writer.AddCXXCtorInitializers(D->IvarInitializers, D->NumIvarInitializers, 588 Record); 589 Record.push_back(D->hasSynthBitfield()); 590 Code = serialization::DECL_OBJC_IMPLEMENTATION; 591} 592 593void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 594 VisitDecl(D); 595 Writer.AddSourceLocation(D->getLocStart(), Record); 596 Writer.AddDeclRef(D->getPropertyDecl(), Record); 597 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 598 Writer.AddSourceLocation(D->getPropertyIvarDeclLoc(), Record); 599 Writer.AddStmt(D->getGetterCXXConstructor()); 600 Writer.AddStmt(D->getSetterCXXAssignment()); 601 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 602} 603 604void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 605 VisitDeclaratorDecl(D); 606 Record.push_back(D->isMutable()); 607 Record.push_back(D->getBitWidth()? 1 : D->hasInClassInitializer() ? 2 : 0); 608 if (D->getBitWidth()) 609 Writer.AddStmt(D->getBitWidth()); 610 else if (D->hasInClassInitializer()) 611 Writer.AddStmt(D->getInClassInitializer()); 612 if (!D->getDeclName()) 613 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); 614 615 if (!D->hasAttrs() && 616 !D->isImplicit() && 617 !D->isUsed(false) && 618 !D->isInvalidDecl() && 619 !D->isReferenced() && 620 !D->isModulePrivate() && 621 !D->getBitWidth() && 622 !D->hasInClassInitializer() && 623 !D->hasExtInfo() && 624 !ObjCIvarDecl::classofKind(D->getKind()) && 625 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 626 D->getDeclName()) 627 AbbrevToUse = Writer.getDeclFieldAbbrev(); 628 629 Code = serialization::DECL_FIELD; 630} 631 632void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 633 VisitValueDecl(D); 634 Record.push_back(D->getChainingSize()); 635 636 for (IndirectFieldDecl::chain_iterator 637 P = D->chain_begin(), 638 PEnd = D->chain_end(); P != PEnd; ++P) 639 Writer.AddDeclRef(*P, Record); 640 Code = serialization::DECL_INDIRECTFIELD; 641} 642 643void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 644 VisitDeclaratorDecl(D); 645 VisitRedeclarable(D); 646 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 647 Record.push_back(D->getStorageClassAsWritten()); 648 Record.push_back(D->isThreadSpecified()); 649 Record.push_back(D->hasCXXDirectInitializer()); 650 Record.push_back(D->isExceptionVariable()); 651 Record.push_back(D->isNRVOVariable()); 652 Record.push_back(D->isCXXForRangeDecl()); 653 Record.push_back(D->isARCPseudoStrong()); 654 Record.push_back(D->getInit() ? 1 : 0); 655 if (D->getInit()) 656 Writer.AddStmt(D->getInit()); 657 658 MemberSpecializationInfo *SpecInfo 659 = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0; 660 Record.push_back(SpecInfo != 0); 661 if (SpecInfo) { 662 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); 663 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 664 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); 665 } 666 667 if (!D->hasAttrs() && 668 !D->isImplicit() && 669 !D->isUsed(false) && 670 !D->isInvalidDecl() && 671 !D->isReferenced() && 672 D->getAccess() == AS_none && 673 !D->isModulePrivate() && 674 D->getDeclName().getNameKind() == DeclarationName::Identifier && 675 !D->hasExtInfo() && 676 D->RedeclLink.getNext() == D && 677 !D->hasCXXDirectInitializer() && 678 D->getInit() == 0 && 679 !isa<ParmVarDecl>(D) && 680 !SpecInfo) 681 AbbrevToUse = Writer.getDeclVarAbbrev(); 682 683 Code = serialization::DECL_VAR; 684} 685 686void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 687 VisitVarDecl(D); 688 Code = serialization::DECL_IMPLICIT_PARAM; 689} 690 691void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 692 VisitVarDecl(D); 693 Record.push_back(D->isObjCMethodParameter()); 694 Record.push_back(D->getFunctionScopeDepth()); 695 Record.push_back(D->getFunctionScopeIndex()); 696 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 697 Record.push_back(D->isKNRPromoted()); 698 Record.push_back(D->hasInheritedDefaultArg()); 699 Record.push_back(D->hasUninstantiatedDefaultArg()); 700 if (D->hasUninstantiatedDefaultArg()) 701 Writer.AddStmt(D->getUninstantiatedDefaultArg()); 702 Code = serialization::DECL_PARM_VAR; 703 704 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 705 706 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 707 // we dynamically check for the properties that we optimize for, but don't 708 // know are true of all PARM_VAR_DECLs. 709 if (!D->hasAttrs() && 710 !D->hasExtInfo() && 711 !D->isImplicit() && 712 !D->isUsed(false) && 713 D->getAccess() == AS_none && 714 !D->isModulePrivate() && 715 D->getStorageClass() == 0 && 716 !D->hasCXXDirectInitializer() && // Can params have this ever? 717 D->getFunctionScopeDepth() == 0 && 718 D->getObjCDeclQualifier() == 0 && 719 !D->isKNRPromoted() && 720 !D->hasInheritedDefaultArg() && 721 D->getInit() == 0 && 722 !D->hasUninstantiatedDefaultArg()) // No default expr. 723 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 724 725 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 726 // just us assuming it. 727 assert(!D->isInvalidDecl() && "Shouldn't emit invalid decls"); 728 assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread"); 729 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 730 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 731 assert(D->getPreviousDeclaration() == 0 && "PARM_VAR_DECL can't be redecl"); 732 assert(!D->isStaticDataMember() && 733 "PARM_VAR_DECL can't be static data member"); 734} 735 736void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 737 VisitDecl(D); 738 Writer.AddStmt(D->getAsmString()); 739 Writer.AddSourceLocation(D->getRParenLoc(), Record); 740 Code = serialization::DECL_FILE_SCOPE_ASM; 741} 742 743void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 744 VisitDecl(D); 745 Writer.AddStmt(D->getBody()); 746 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); 747 Record.push_back(D->param_size()); 748 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 749 P != PEnd; ++P) 750 Writer.AddDeclRef(*P, Record); 751 Record.push_back(D->capturesCXXThis()); 752 Record.push_back(D->getNumCaptures()); 753 for (BlockDecl::capture_iterator 754 i = D->capture_begin(), e = D->capture_end(); i != e; ++i) { 755 const BlockDecl::Capture &capture = *i; 756 Writer.AddDeclRef(capture.getVariable(), Record); 757 758 unsigned flags = 0; 759 if (capture.isByRef()) flags |= 1; 760 if (capture.isNested()) flags |= 2; 761 if (capture.hasCopyExpr()) flags |= 4; 762 Record.push_back(flags); 763 764 if (capture.hasCopyExpr()) Writer.AddStmt(capture.getCopyExpr()); 765 } 766 767 Code = serialization::DECL_BLOCK; 768} 769 770void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 771 VisitDecl(D); 772 Record.push_back(D->getLanguage()); 773 Writer.AddSourceLocation(D->getExternLoc(), Record); 774 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 775 Code = serialization::DECL_LINKAGE_SPEC; 776} 777 778void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 779 VisitNamedDecl(D); 780 Writer.AddSourceLocation(D->getLocStart(), Record); 781 Code = serialization::DECL_LABEL; 782} 783 784 785void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 786 VisitNamedDecl(D); 787 Record.push_back(D->isInline()); 788 Writer.AddSourceLocation(D->getLocStart(), Record); 789 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 790 Writer.AddDeclRef(D->getNextNamespace(), Record); 791 792 // Only write one reference--original or anonymous 793 Record.push_back(D->isOriginalNamespace()); 794 if (D->isOriginalNamespace()) 795 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 796 else 797 Writer.AddDeclRef(D->getOriginalNamespace(), Record); 798 Code = serialization::DECL_NAMESPACE; 799 800 if (Writer.hasChain() && !D->isOriginalNamespace() && 801 D->getOriginalNamespace()->isFromASTFile()) { 802 NamespaceDecl *NS = D->getOriginalNamespace(); 803 Writer.AddUpdatedDeclContext(NS); 804 805 // Make sure all visible decls are written. They will be recorded later. 806 NS->lookup(DeclarationName()); 807 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(NS->getLookupPtr()); 808 if (Map) { 809 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 810 D != DEnd; ++D) { 811 DeclContext::lookup_result Result = D->second.getLookupResult(); 812 while (Result.first != Result.second) { 813 Writer.GetDeclRef(*Result.first); 814 ++Result.first; 815 } 816 } 817 } 818 } 819 820 if (Writer.hasChain() && D->isAnonymousNamespace() && !D->getNextNamespace()){ 821 // This is a most recent reopening of the anonymous namespace. If its parent 822 // is in a previous PCH (or is the TU), mark that parent for update, because 823 // the original namespace always points to the latest re-opening of its 824 // anonymous namespace. 825 Decl *Parent = cast<Decl>( 826 D->getParent()->getRedeclContext()->getPrimaryContext()); 827 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 828 ASTWriter::UpdateRecord &Record = Writer.DeclUpdates[Parent]; 829 Record.push_back(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE); 830 Writer.AddDeclRef(D, Record); 831 } 832 } 833} 834 835void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 836 VisitNamedDecl(D); 837 Writer.AddSourceLocation(D->getNamespaceLoc(), Record); 838 Writer.AddSourceLocation(D->getTargetNameLoc(), Record); 839 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 840 Writer.AddDeclRef(D->getNamespace(), Record); 841 Code = serialization::DECL_NAMESPACE_ALIAS; 842} 843 844void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 845 VisitNamedDecl(D); 846 Writer.AddSourceLocation(D->getUsingLocation(), Record); 847 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 848 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 849 Writer.AddDeclRef(D->FirstUsingShadow, Record); 850 Record.push_back(D->isTypeName()); 851 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); 852 Code = serialization::DECL_USING; 853} 854 855void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 856 VisitNamedDecl(D); 857 Writer.AddDeclRef(D->getTargetDecl(), Record); 858 Writer.AddDeclRef(D->UsingOrNextShadow, Record); 859 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); 860 Code = serialization::DECL_USING_SHADOW; 861} 862 863void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 864 VisitNamedDecl(D); 865 Writer.AddSourceLocation(D->getUsingLoc(), Record); 866 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); 867 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 868 Writer.AddDeclRef(D->getNominatedNamespace(), Record); 869 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); 870 Code = serialization::DECL_USING_DIRECTIVE; 871} 872 873void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 874 VisitValueDecl(D); 875 Writer.AddSourceLocation(D->getUsingLoc(), Record); 876 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 877 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 878 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 879} 880 881void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 882 UnresolvedUsingTypenameDecl *D) { 883 VisitTypeDecl(D); 884 Writer.AddSourceLocation(D->getTypenameLoc(), Record); 885 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record); 886 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 887} 888 889void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 890 VisitRecordDecl(D); 891 892 CXXRecordDecl *DefinitionDecl = 0; 893 if (D->DefinitionData) 894 DefinitionDecl = D->DefinitionData->Definition; 895 Writer.AddDeclRef(DefinitionDecl, Record); 896 if (D == DefinitionDecl) 897 Writer.AddCXXDefinitionData(D, Record); 898 899 enum { 900 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 901 }; 902 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 903 Record.push_back(CXXRecTemplate); 904 Writer.AddDeclRef(TemplD, Record); 905 } else if (MemberSpecializationInfo *MSInfo 906 = D->getMemberSpecializationInfo()) { 907 Record.push_back(CXXRecMemberSpecialization); 908 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); 909 Record.push_back(MSInfo->getTemplateSpecializationKind()); 910 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); 911 } else { 912 Record.push_back(CXXRecNotTemplate); 913 } 914 915 // Store the key function to avoid deserializing every method so we can 916 // compute it. 917 if (D->IsCompleteDefinition) 918 Writer.AddDeclRef(Context.getKeyFunction(D), Record); 919 920 Code = serialization::DECL_CXX_RECORD; 921} 922 923void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 924 VisitFunctionDecl(D); 925 Record.push_back(D->size_overridden_methods()); 926 for (CXXMethodDecl::method_iterator 927 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 928 I != E; ++I) 929 Writer.AddDeclRef(*I, Record); 930 Code = serialization::DECL_CXX_METHOD; 931} 932 933void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 934 VisitCXXMethodDecl(D); 935 936 Record.push_back(D->IsExplicitSpecified); 937 Record.push_back(D->ImplicitlyDefined); 938 Writer.AddCXXCtorInitializers(D->CtorInitializers, D->NumCtorInitializers, 939 Record); 940 941 Code = serialization::DECL_CXX_CONSTRUCTOR; 942} 943 944void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 945 VisitCXXMethodDecl(D); 946 947 Record.push_back(D->ImplicitlyDefined); 948 Writer.AddDeclRef(D->OperatorDelete, Record); 949 950 Code = serialization::DECL_CXX_DESTRUCTOR; 951} 952 953void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 954 VisitCXXMethodDecl(D); 955 Record.push_back(D->IsExplicitSpecified); 956 Code = serialization::DECL_CXX_CONVERSION; 957} 958 959void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 960 VisitDecl(D); 961 Writer.AddSourceLocation(D->getColonLoc(), Record); 962 Code = serialization::DECL_ACCESS_SPEC; 963} 964 965void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 966 VisitDecl(D); 967 Record.push_back(D->Friend.is<TypeSourceInfo*>()); 968 if (D->Friend.is<TypeSourceInfo*>()) 969 Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record); 970 else 971 Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record); 972 Writer.AddDeclRef(D->getNextFriend(), Record); 973 Record.push_back(D->UnsupportedFriend); 974 Writer.AddSourceLocation(D->FriendLoc, Record); 975 Code = serialization::DECL_FRIEND; 976} 977 978void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 979 VisitDecl(D); 980 Record.push_back(D->getNumTemplateParameters()); 981 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 982 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record); 983 Record.push_back(D->getFriendDecl() != 0); 984 if (D->getFriendDecl()) 985 Writer.AddDeclRef(D->getFriendDecl(), Record); 986 else 987 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 988 Writer.AddSourceLocation(D->getFriendLoc(), Record); 989 Code = serialization::DECL_FRIEND_TEMPLATE; 990} 991 992void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 993 VisitNamedDecl(D); 994 995 Writer.AddDeclRef(D->getTemplatedDecl(), Record); 996 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 997} 998 999void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1000 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1001 // getCommonPtr() can be used while this is still initializing. 1002 1003 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 1004 if (D->getPreviousDeclaration()) 1005 Writer.AddDeclRef(D->getFirstDeclaration(), Record); 1006 1007 if (D->getPreviousDeclaration() == 0) { 1008 // This TemplateDecl owns the CommonPtr; write it. 1009 assert(D->isCanonicalDecl()); 1010 1011 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); 1012 if (D->getInstantiatedFromMemberTemplate()) 1013 Record.push_back(D->isMemberSpecialization()); 1014 1015 Writer.AddDeclRef(D->getCommonPtr()->Latest, Record); 1016 } else { 1017 RedeclarableTemplateDecl *First = D->getFirstDeclaration(); 1018 assert(First != D); 1019 // If this is a most recent redeclaration that is pointed to by a first decl 1020 // in a chained PCH, keep track of the association with the map so we can 1021 // update the first decl during AST reading. 1022 if (First->getMostRecentDeclaration() == D && 1023 First->isFromASTFile() && !D->isFromASTFile()) { 1024 assert(Writer.FirstLatestDecls.find(First)==Writer.FirstLatestDecls.end() 1025 && "The latest is already set"); 1026 Writer.FirstLatestDecls[First] = D; 1027 } 1028 } 1029 1030 VisitTemplateDecl(D); 1031 Record.push_back(D->getIdentifierNamespace()); 1032} 1033 1034void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1035 VisitRedeclarableTemplateDecl(D); 1036 1037 if (D->getPreviousDeclaration() == 0) { 1038 typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy; 1039 CTSDSetTy &CTSDSet = D->getSpecializations(); 1040 Record.push_back(CTSDSet.size()); 1041 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) { 1042 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 1043 Writer.AddDeclRef(&*I, Record); 1044 } 1045 1046 typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy; 1047 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations(); 1048 Record.push_back(CTPSDSet.size()); 1049 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) { 1050 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 1051 Writer.AddDeclRef(&*I, Record); 1052 } 1053 1054 // InjectedClassNameType is computed, no need to write it. 1055 } 1056 Code = serialization::DECL_CLASS_TEMPLATE; 1057} 1058 1059void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1060 ClassTemplateSpecializationDecl *D) { 1061 VisitCXXRecordDecl(D); 1062 1063 llvm::PointerUnion<ClassTemplateDecl *, 1064 ClassTemplatePartialSpecializationDecl *> InstFrom 1065 = D->getSpecializedTemplateOrPartial(); 1066 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1067 Writer.AddDeclRef(InstFromD, Record); 1068 } else { 1069 Writer.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>(), 1070 Record); 1071 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 1072 } 1073 1074 // Explicit info. 1075 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 1076 if (D->getTypeAsWritten()) { 1077 Writer.AddSourceLocation(D->getExternLoc(), Record); 1078 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 1079 } 1080 1081 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 1082 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 1083 Record.push_back(D->getSpecializationKind()); 1084 1085 if (D->isCanonicalDecl()) { 1086 // When reading, we'll add it to the folding set of the following template. 1087 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 1088 } 1089 1090 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1091} 1092 1093void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1094 ClassTemplatePartialSpecializationDecl *D) { 1095 VisitClassTemplateSpecializationDecl(D); 1096 1097 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 1098 1099 Record.push_back(D->getNumTemplateArgsAsWritten()); 1100 for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i) 1101 Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record); 1102 1103 Record.push_back(D->getSequenceNumber()); 1104 1105 // These are read/set from/to the first declaration. 1106 if (D->getPreviousDeclaration() == 0) { 1107 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 1108 Record.push_back(D->isMemberSpecialization()); 1109 } 1110 1111 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1112} 1113 1114void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1115 ClassScopeFunctionSpecializationDecl *D) { 1116 VisitDecl(D); 1117 Writer.AddDeclRef(D->getSpecialization(), Record); 1118 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1119} 1120 1121 1122void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1123 VisitRedeclarableTemplateDecl(D); 1124 1125 if (D->getPreviousDeclaration() == 0) { 1126 // This FunctionTemplateDecl owns the CommonPtr; write it. 1127 1128 // Write the function specialization declarations. 1129 Record.push_back(D->getSpecializations().size()); 1130 for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator 1131 I = D->getSpecializations().begin(), 1132 E = D->getSpecializations().end() ; I != E; ++I) { 1133 assert(I->Function->isCanonicalDecl() && 1134 "Expected only canonical decls in set"); 1135 Writer.AddDeclRef(I->Function, Record); 1136 } 1137 } 1138 Code = serialization::DECL_FUNCTION_TEMPLATE; 1139} 1140 1141void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1142 VisitTypeDecl(D); 1143 1144 Record.push_back(D->wasDeclaredWithTypename()); 1145 Record.push_back(D->defaultArgumentWasInherited()); 1146 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 1147 1148 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1149} 1150 1151void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1152 // For an expanded parameter pack, record the number of expansion types here 1153 // so that it's easier for 1154 if (D->isExpandedParameterPack()) 1155 Record.push_back(D->getNumExpansionTypes()); 1156 1157 VisitDeclaratorDecl(D); 1158 // TemplateParmPosition. 1159 Record.push_back(D->getDepth()); 1160 Record.push_back(D->getPosition()); 1161 1162 if (D->isExpandedParameterPack()) { 1163 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1164 Writer.AddTypeRef(D->getExpansionType(I), Record); 1165 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record); 1166 } 1167 1168 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1169 } else { 1170 // Rest of NonTypeTemplateParmDecl. 1171 Record.push_back(D->isParameterPack()); 1172 Record.push_back(D->getDefaultArgument() != 0); 1173 if (D->getDefaultArgument()) { 1174 Writer.AddStmt(D->getDefaultArgument()); 1175 Record.push_back(D->defaultArgumentWasInherited()); 1176 } 1177 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1178 } 1179} 1180 1181void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1182 VisitTemplateDecl(D); 1183 // TemplateParmPosition. 1184 Record.push_back(D->getDepth()); 1185 Record.push_back(D->getPosition()); 1186 // Rest of TemplateTemplateParmDecl. 1187 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1188 Record.push_back(D->defaultArgumentWasInherited()); 1189 Record.push_back(D->isParameterPack()); 1190 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1191} 1192 1193void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1194 VisitRedeclarableTemplateDecl(D); 1195 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1196} 1197 1198void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1199 VisitDecl(D); 1200 Writer.AddStmt(D->getAssertExpr()); 1201 Writer.AddStmt(D->getMessage()); 1202 Writer.AddSourceLocation(D->getRParenLoc(), Record); 1203 Code = serialization::DECL_STATIC_ASSERT; 1204} 1205 1206/// \brief Emit the DeclContext part of a declaration context decl. 1207/// 1208/// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1209/// block for this declaration context is stored. May be 0 to indicate 1210/// that there are no declarations stored within this context. 1211/// 1212/// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1213/// block for this declaration context is stored. May be 0 to indicate 1214/// that there are no declarations visible from this context. Note 1215/// that this value will not be emitted for non-primary declaration 1216/// contexts. 1217void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1218 uint64_t VisibleOffset) { 1219 Record.push_back(LexicalOffset); 1220 Record.push_back(VisibleOffset); 1221} 1222 1223template <typename T> 1224void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1225 enum { NoRedeclaration = 0, PointsToPrevious, PointsToLatest }; 1226 if (D->RedeclLink.getNext() == D) { 1227 Record.push_back(NoRedeclaration); 1228 } else { 1229 if (D->RedeclLink.NextIsPrevious()) { 1230 Record.push_back(PointsToPrevious); 1231 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 1232 Writer.AddDeclRef(D->getFirstDeclaration(), Record); 1233 } else { 1234 Record.push_back(PointsToLatest); 1235 Writer.AddDeclRef(D->RedeclLink.getPointer(), Record); 1236 } 1237 } 1238 1239 T *First = D->getFirstDeclaration(); 1240 T *ThisDecl = static_cast<T*>(D); 1241 // If this is a most recent redeclaration that is pointed to by a first decl 1242 // in a chained PCH, keep track of the association with the map so we can 1243 // update the first decl during AST reading. 1244 if (ThisDecl != First && First->getMostRecentDeclaration() == ThisDecl && 1245 First->isFromASTFile() && !ThisDecl->isFromASTFile()) { 1246 assert(Writer.FirstLatestDecls.find(First) == Writer.FirstLatestDecls.end() 1247 && "The latest is already set"); 1248 Writer.FirstLatestDecls[First] = ThisDecl; 1249 } 1250} 1251 1252//===----------------------------------------------------------------------===// 1253// ASTWriter Implementation 1254//===----------------------------------------------------------------------===// 1255 1256void ASTWriter::WriteDeclsBlockAbbrevs() { 1257 using namespace llvm; 1258 1259 BitCodeAbbrev *Abv; 1260 1261 // Abbreviation for DECL_FIELD 1262 Abv = new BitCodeAbbrev(); 1263 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1264 // Decl 1265 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1266 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1267 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1268 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1269 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1270 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1271 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1272 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1273 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1274 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1275 // NamedDecl 1276 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1277 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1278 // ValueDecl 1279 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1280 // DeclaratorDecl 1281 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1282 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1283 // FieldDecl 1284 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1285 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1286 // Type Source Info 1287 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1288 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1289 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1290 DeclFieldAbbrev = Stream.EmitAbbrev(Abv); 1291 1292 // Abbreviation for DECL_OBJC_IVAR 1293 Abv = new BitCodeAbbrev(); 1294 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1295 // Decl 1296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1297 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1298 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1299 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1300 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1301 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1302 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1303 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1304 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1305 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1306 // NamedDecl 1307 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1308 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1309 // ValueDecl 1310 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1311 // DeclaratorDecl 1312 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1313 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1314 // FieldDecl 1315 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1316 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth 1317 // ObjC Ivar 1318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1319 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1320 // Type Source Info 1321 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1322 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1323 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1324 DeclObjCIvarAbbrev = Stream.EmitAbbrev(Abv); 1325 1326 // Abbreviation for DECL_ENUM 1327 Abv = new BitCodeAbbrev(); 1328 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1329 // Decl 1330 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1331 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1332 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1333 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1334 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1335 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1336 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1337 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1338 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1339 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1340 // NamedDecl 1341 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1342 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1343 // TypeDecl 1344 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1345 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1346 // Redeclarable 1347 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1348 // TagDecl 1349 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1350 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1351 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1352 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1353 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1354 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1355 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1356 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl 1357 // EnumDecl 1358 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1359 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1360 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1361 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1362 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1363 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1364 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1365 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1366 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1367 // DC 1368 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1369 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1370 DeclEnumAbbrev = Stream.EmitAbbrev(Abv); 1371 1372 // Abbreviation for DECL_RECORD 1373 Abv = new BitCodeAbbrev(); 1374 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1375 // Decl 1376 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1377 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1378 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1379 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1380 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1381 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1382 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1383 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1384 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1385 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1386 // NamedDecl 1387 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1388 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1389 // TypeDecl 1390 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1391 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1392 // Redeclarable 1393 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1394 // TagDecl 1395 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1396 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1397 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1398 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1399 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1400 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1401 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1402 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl 1403 // RecordDecl 1404 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1405 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1406 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1407 // DC 1408 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1409 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1410 DeclRecordAbbrev = Stream.EmitAbbrev(Abv); 1411 1412 // Abbreviation for DECL_PARM_VAR 1413 Abv = new BitCodeAbbrev(); 1414 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1415 // Decl 1416 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1417 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1418 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1419 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1420 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1421 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1422 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1423 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1424 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1425 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1426 // NamedDecl 1427 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1428 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1429 // ValueDecl 1430 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1431 // DeclaratorDecl 1432 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1433 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1434 // VarDecl 1435 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1436 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1437 Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten 1438 Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified 1439 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1440 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable 1441 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable 1442 Abv->Add(BitCodeAbbrevOp(0)); // isCXXForRangeDecl 1443 Abv->Add(BitCodeAbbrevOp(0)); // isARCPseudoStrong 1444 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1445 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1446 // ParmVarDecl 1447 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1448 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1449 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1450 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1451 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1452 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1453 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1454 // Type Source Info 1455 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1456 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1457 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1458 DeclParmVarAbbrev = Stream.EmitAbbrev(Abv); 1459 1460 // Abbreviation for DECL_TYPEDEF 1461 Abv = new BitCodeAbbrev(); 1462 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1463 // Decl 1464 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1465 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1466 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1467 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1468 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1469 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1470 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1471 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1472 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1473 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1474 // NamedDecl 1475 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1476 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1477 // TypeDecl 1478 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1479 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1480 // TypedefDecl 1481 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1482 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1483 DeclTypedefAbbrev = Stream.EmitAbbrev(Abv); 1484 1485 // Abbreviation for DECL_VAR 1486 Abv = new BitCodeAbbrev(); 1487 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1488 // Decl 1489 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1490 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1491 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1492 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1493 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1494 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1495 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1496 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1497 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1498 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1499 // NamedDecl 1500 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1501 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1502 // ValueDecl 1503 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1504 // DeclaratorDecl 1505 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1506 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1507 // VarDecl 1508 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1509 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClass 1510 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClassAsWritten 1511 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isThreadSpecified 1512 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CXXDirectInitializer 1513 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 1514 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 1515 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 1516 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 1517 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasInit 1518 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasMemberSpecInfo 1519 // Type Source Info 1520 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1521 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1522 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1523 DeclVarAbbrev = Stream.EmitAbbrev(Abv); 1524 1525 // Abbreviation for EXPR_DECL_REF 1526 Abv = new BitCodeAbbrev(); 1527 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 1528 //Stmt 1529 //Expr 1530 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1531 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1532 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1533 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1534 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1535 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1536 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1537 //DeclRefExpr 1538 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 1539 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 1540 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 1541 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 1542 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 1543 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1544 DeclRefExprAbbrev = Stream.EmitAbbrev(Abv); 1545 1546 // Abbreviation for EXPR_INTEGER_LITERAL 1547 Abv = new BitCodeAbbrev(); 1548 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 1549 //Stmt 1550 //Expr 1551 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1552 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1553 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1554 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1555 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1556 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1557 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1558 //Integer Literal 1559 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1560 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 1561 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 1562 IntegerLiteralAbbrev = Stream.EmitAbbrev(Abv); 1563 1564 // Abbreviation for EXPR_CHARACTER_LITERAL 1565 Abv = new BitCodeAbbrev(); 1566 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 1567 //Stmt 1568 //Expr 1569 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1570 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 1571 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 1572 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 1573 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 1574 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 1575 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 1576 //Character Literal 1577 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 1578 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1579 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //IsWide 1580 CharacterLiteralAbbrev = Stream.EmitAbbrev(Abv); 1581 1582 Abv = new BitCodeAbbrev(); 1583 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1584 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1585 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1586 1587 Abv = new BitCodeAbbrev(); 1588 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1589 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1590 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1591 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1592} 1593 1594/// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1595/// consumers of the AST. 1596/// 1597/// Such decls will always be deserialized from the AST file, so we would like 1598/// this to be as restrictive as possible. Currently the predicate is driven by 1599/// code generation requirements, if other clients have a different notion of 1600/// what is "required" then we may have to consider an alternate scheme where 1601/// clients can iterate over the top-level decls and get information on them, 1602/// without necessary deserializing them. We could explicitly require such 1603/// clients to use a separate API call to "realize" the decl. This should be 1604/// relatively painless since they would presumably only do it for top-level 1605/// decls. 1606static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 1607 // An ObjCMethodDecl is never considered as "required" because its 1608 // implementation container always is. 1609 1610 // File scoped assembly or obj-c implementation must be seen. 1611 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D)) 1612 return true; 1613 1614 return Context.DeclMustBeEmitted(D); 1615} 1616 1617void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 1618 // Switch case IDs are per Decl. 1619 ClearSwitchCaseIDs(); 1620 1621 RecordData Record; 1622 ASTDeclWriter W(*this, Context, Record); 1623 1624 // If this declaration is also a DeclContext, write blocks for the 1625 // declarations that lexically stored inside its context and those 1626 // declarations that are visible from its context. These blocks 1627 // are written before the declaration itself so that we can put 1628 // their offsets into the record for the declaration. 1629 uint64_t LexicalOffset = 0; 1630 uint64_t VisibleOffset = 0; 1631 DeclContext *DC = dyn_cast<DeclContext>(D); 1632 if (DC) { 1633 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 1634 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 1635 } 1636 1637 // Determine the ID for this declaration 1638 serialization::DeclID &IDR = DeclIDs[D]; 1639 if (IDR == 0) 1640 IDR = NextDeclID++; 1641 serialization::DeclID ID = IDR; 1642 1643 if (ID < FirstDeclID) { 1644 // We're replacing a decl in a previous file. 1645 ReplacedDecls.push_back(std::make_pair(ID, Stream.GetCurrentBitNo())); 1646 } else { 1647 unsigned Index = ID - FirstDeclID; 1648 1649 // Record the offset for this declaration 1650 if (DeclOffsets.size() == Index) 1651 DeclOffsets.push_back(Stream.GetCurrentBitNo()); 1652 else if (DeclOffsets.size() < Index) { 1653 DeclOffsets.resize(Index+1); 1654 DeclOffsets[Index] = Stream.GetCurrentBitNo(); 1655 } 1656 } 1657 1658 // Build and emit a record for this declaration 1659 Record.clear(); 1660 W.Code = (serialization::DeclCode)0; 1661 W.AbbrevToUse = 0; 1662 W.Visit(D); 1663 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 1664 1665 if (!W.Code) 1666 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 1667 D->getDeclKindName() + "'"); 1668 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 1669 1670 // Flush any expressions that were written as part of this declaration. 1671 FlushStmts(); 1672 1673 // Flush C++ base specifiers, if there are any. 1674 FlushCXXBaseSpecifiers(); 1675 1676 // Note "external" declarations so that we can add them to a record in the 1677 // AST file later. 1678 // 1679 // FIXME: This should be renamed, the predicate is much more complicated. 1680 if (isRequiredDecl(D, Context)) 1681 ExternalDefinitions.push_back(ID); 1682} 1683