1 //===--- ASTWriter.cpp - AST File Writer ----------------------------------===// 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 defines the ASTWriter class, which writes AST files. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Serialization/ASTWriter.h" 15 #include "ASTCommon.h" 16 #include "clang/Sema/Sema.h" 17 #include "clang/Sema/IdentifierResolver.h" 18 #include "clang/AST/ASTContext.h" 19 #include "clang/AST/Decl.h" 20 #include "clang/AST/DeclContextInternals.h" 21 #include "clang/AST/DeclTemplate.h" 22 #include "clang/AST/DeclFriend.h" 23 #include "clang/AST/Expr.h" 24 #include "clang/AST/ExprCXX.h" 25 #include "clang/AST/Type.h" 26 #include "clang/AST/TypeLocVisitor.h" 27 #include "clang/Serialization/ASTReader.h" 28 #include "clang/Lex/MacroInfo.h" 29 #include "clang/Lex/PreprocessingRecord.h" 30 #include "clang/Lex/Preprocessor.h" 31 #include "clang/Lex/HeaderSearch.h" 32 #include "clang/Basic/FileManager.h" 33 #include "clang/Basic/FileSystemStatCache.h" 34 #include "clang/Basic/OnDiskHashTable.h" 35 #include "clang/Basic/SourceManager.h" 36 #include "clang/Basic/SourceManagerInternals.h" 37 #include "clang/Basic/TargetInfo.h" 38 #include "clang/Basic/Version.h" 39 #include "clang/Basic/VersionTuple.h" 40 #include "llvm/ADT/APFloat.h" 41 #include "llvm/ADT/APInt.h" 42 #include "llvm/ADT/StringExtras.h" 43 #include "llvm/Bitcode/BitstreamWriter.h" 44 #include "llvm/Support/FileSystem.h" 45 #include "llvm/Support/MemoryBuffer.h" 46 #include "llvm/Support/Path.h" 47 #include <algorithm> 48 #include <cstdio> 49 #include <string.h> 50 #include <utility> 51 using namespace clang; 52 using namespace clang::serialization; 53 54 template <typename T, typename Allocator> 55 static StringRef data(const std::vector<T, Allocator> &v) { 56 if (v.empty()) return StringRef(); 57 return StringRef(reinterpret_cast<const char*>(&v[0]), 58 sizeof(T) * v.size()); 59 } 60 61 template <typename T> 62 static StringRef data(const SmallVectorImpl<T> &v) { 63 return StringRef(reinterpret_cast<const char*>(v.data()), 64 sizeof(T) * v.size()); 65 } 66 67 //===----------------------------------------------------------------------===// 68 // Type serialization 69 //===----------------------------------------------------------------------===// 70 71 namespace { 72 class ASTTypeWriter { 73 ASTWriter &Writer; 74 ASTWriter::RecordDataImpl &Record; 75 76 public: 77 /// \brief Type code that corresponds to the record generated. 78 TypeCode Code; 79 80 ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record) 81 : Writer(Writer), Record(Record), Code(TYPE_EXT_QUAL) { } 82 83 void VisitArrayType(const ArrayType *T); 84 void VisitFunctionType(const FunctionType *T); 85 void VisitTagType(const TagType *T); 86 87 #define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T); 88 #define ABSTRACT_TYPE(Class, Base) 89 #include "clang/AST/TypeNodes.def" 90 }; 91 } 92 93 void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) { 94 llvm_unreachable("Built-in types are never serialized"); 95 } 96 97 void ASTTypeWriter::VisitComplexType(const ComplexType *T) { 98 Writer.AddTypeRef(T->getElementType(), Record); 99 Code = TYPE_COMPLEX; 100 } 101 102 void ASTTypeWriter::VisitPointerType(const PointerType *T) { 103 Writer.AddTypeRef(T->getPointeeType(), Record); 104 Code = TYPE_POINTER; 105 } 106 107 void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) { 108 Writer.AddTypeRef(T->getPointeeType(), Record); 109 Code = TYPE_BLOCK_POINTER; 110 } 111 112 void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) { 113 Writer.AddTypeRef(T->getPointeeTypeAsWritten(), Record); 114 Record.push_back(T->isSpelledAsLValue()); 115 Code = TYPE_LVALUE_REFERENCE; 116 } 117 118 void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) { 119 Writer.AddTypeRef(T->getPointeeTypeAsWritten(), Record); 120 Code = TYPE_RVALUE_REFERENCE; 121 } 122 123 void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) { 124 Writer.AddTypeRef(T->getPointeeType(), Record); 125 Writer.AddTypeRef(QualType(T->getClass(), 0), Record); 126 Code = TYPE_MEMBER_POINTER; 127 } 128 129 void ASTTypeWriter::VisitArrayType(const ArrayType *T) { 130 Writer.AddTypeRef(T->getElementType(), Record); 131 Record.push_back(T->getSizeModifier()); // FIXME: stable values 132 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values 133 } 134 135 void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) { 136 VisitArrayType(T); 137 Writer.AddAPInt(T->getSize(), Record); 138 Code = TYPE_CONSTANT_ARRAY; 139 } 140 141 void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) { 142 VisitArrayType(T); 143 Code = TYPE_INCOMPLETE_ARRAY; 144 } 145 146 void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) { 147 VisitArrayType(T); 148 Writer.AddSourceLocation(T->getLBracketLoc(), Record); 149 Writer.AddSourceLocation(T->getRBracketLoc(), Record); 150 Writer.AddStmt(T->getSizeExpr()); 151 Code = TYPE_VARIABLE_ARRAY; 152 } 153 154 void ASTTypeWriter::VisitVectorType(const VectorType *T) { 155 Writer.AddTypeRef(T->getElementType(), Record); 156 Record.push_back(T->getNumElements()); 157 Record.push_back(T->getVectorKind()); 158 Code = TYPE_VECTOR; 159 } 160 161 void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) { 162 VisitVectorType(T); 163 Code = TYPE_EXT_VECTOR; 164 } 165 166 void ASTTypeWriter::VisitFunctionType(const FunctionType *T) { 167 Writer.AddTypeRef(T->getResultType(), Record); 168 FunctionType::ExtInfo C = T->getExtInfo(); 169 Record.push_back(C.getNoReturn()); 170 Record.push_back(C.getHasRegParm()); 171 Record.push_back(C.getRegParm()); 172 // FIXME: need to stabilize encoding of calling convention... 173 Record.push_back(C.getCC()); 174 Record.push_back(C.getProducesResult()); 175 } 176 177 void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) { 178 VisitFunctionType(T); 179 Code = TYPE_FUNCTION_NO_PROTO; 180 } 181 182 void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) { 183 VisitFunctionType(T); 184 Record.push_back(T->getNumArgs()); 185 for (unsigned I = 0, N = T->getNumArgs(); I != N; ++I) 186 Writer.AddTypeRef(T->getArgType(I), Record); 187 Record.push_back(T->isVariadic()); 188 Record.push_back(T->hasTrailingReturn()); 189 Record.push_back(T->getTypeQuals()); 190 Record.push_back(static_cast<unsigned>(T->getRefQualifier())); 191 Record.push_back(T->getExceptionSpecType()); 192 if (T->getExceptionSpecType() == EST_Dynamic) { 193 Record.push_back(T->getNumExceptions()); 194 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I) 195 Writer.AddTypeRef(T->getExceptionType(I), Record); 196 } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) { 197 Writer.AddStmt(T->getNoexceptExpr()); 198 } else if (T->getExceptionSpecType() == EST_Uninstantiated) { 199 Writer.AddDeclRef(T->getExceptionSpecDecl(), Record); 200 Writer.AddDeclRef(T->getExceptionSpecTemplate(), Record); 201 } else if (T->getExceptionSpecType() == EST_Unevaluated) { 202 Writer.AddDeclRef(T->getExceptionSpecDecl(), Record); 203 } 204 Code = TYPE_FUNCTION_PROTO; 205 } 206 207 void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) { 208 Writer.AddDeclRef(T->getDecl(), Record); 209 Code = TYPE_UNRESOLVED_USING; 210 } 211 212 void ASTTypeWriter::VisitTypedefType(const TypedefType *T) { 213 Writer.AddDeclRef(T->getDecl(), Record); 214 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?"); 215 Writer.AddTypeRef(T->getCanonicalTypeInternal(), Record); 216 Code = TYPE_TYPEDEF; 217 } 218 219 void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) { 220 Writer.AddStmt(T->getUnderlyingExpr()); 221 Code = TYPE_TYPEOF_EXPR; 222 } 223 224 void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) { 225 Writer.AddTypeRef(T->getUnderlyingType(), Record); 226 Code = TYPE_TYPEOF; 227 } 228 229 void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) { 230 Writer.AddTypeRef(T->getUnderlyingType(), Record); 231 Writer.AddStmt(T->getUnderlyingExpr()); 232 Code = TYPE_DECLTYPE; 233 } 234 235 void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) { 236 Writer.AddTypeRef(T->getBaseType(), Record); 237 Writer.AddTypeRef(T->getUnderlyingType(), Record); 238 Record.push_back(T->getUTTKind()); 239 Code = TYPE_UNARY_TRANSFORM; 240 } 241 242 void ASTTypeWriter::VisitAutoType(const AutoType *T) { 243 Writer.AddTypeRef(T->getDeducedType(), Record); 244 Code = TYPE_AUTO; 245 } 246 247 void ASTTypeWriter::VisitTagType(const TagType *T) { 248 Record.push_back(T->isDependentType()); 249 Writer.AddDeclRef(T->getDecl()->getCanonicalDecl(), Record); 250 assert(!T->isBeingDefined() && 251 "Cannot serialize in the middle of a type definition"); 252 } 253 254 void ASTTypeWriter::VisitRecordType(const RecordType *T) { 255 VisitTagType(T); 256 Code = TYPE_RECORD; 257 } 258 259 void ASTTypeWriter::VisitEnumType(const EnumType *T) { 260 VisitTagType(T); 261 Code = TYPE_ENUM; 262 } 263 264 void ASTTypeWriter::VisitAttributedType(const AttributedType *T) { 265 Writer.AddTypeRef(T->getModifiedType(), Record); 266 Writer.AddTypeRef(T->getEquivalentType(), Record); 267 Record.push_back(T->getAttrKind()); 268 Code = TYPE_ATTRIBUTED; 269 } 270 271 void 272 ASTTypeWriter::VisitSubstTemplateTypeParmType( 273 const SubstTemplateTypeParmType *T) { 274 Writer.AddTypeRef(QualType(T->getReplacedParameter(), 0), Record); 275 Writer.AddTypeRef(T->getReplacementType(), Record); 276 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM; 277 } 278 279 void 280 ASTTypeWriter::VisitSubstTemplateTypeParmPackType( 281 const SubstTemplateTypeParmPackType *T) { 282 Writer.AddTypeRef(QualType(T->getReplacedParameter(), 0), Record); 283 Writer.AddTemplateArgument(T->getArgumentPack(), Record); 284 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK; 285 } 286 287 void 288 ASTTypeWriter::VisitTemplateSpecializationType( 289 const TemplateSpecializationType *T) { 290 Record.push_back(T->isDependentType()); 291 Writer.AddTemplateName(T->getTemplateName(), Record); 292 Record.push_back(T->getNumArgs()); 293 for (TemplateSpecializationType::iterator ArgI = T->begin(), ArgE = T->end(); 294 ArgI != ArgE; ++ArgI) 295 Writer.AddTemplateArgument(*ArgI, Record); 296 Writer.AddTypeRef(T->isTypeAlias() ? T->getAliasedType() : 297 T->isCanonicalUnqualified() ? QualType() 298 : T->getCanonicalTypeInternal(), 299 Record); 300 Code = TYPE_TEMPLATE_SPECIALIZATION; 301 } 302 303 void 304 ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) { 305 VisitArrayType(T); 306 Writer.AddStmt(T->getSizeExpr()); 307 Writer.AddSourceRange(T->getBracketsRange(), Record); 308 Code = TYPE_DEPENDENT_SIZED_ARRAY; 309 } 310 311 void 312 ASTTypeWriter::VisitDependentSizedExtVectorType( 313 const DependentSizedExtVectorType *T) { 314 // FIXME: Serialize this type (C++ only) 315 llvm_unreachable("Cannot serialize dependent sized extended vector types"); 316 } 317 318 void 319 ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) { 320 Record.push_back(T->getDepth()); 321 Record.push_back(T->getIndex()); 322 Record.push_back(T->isParameterPack()); 323 Writer.AddDeclRef(T->getDecl(), Record); 324 Code = TYPE_TEMPLATE_TYPE_PARM; 325 } 326 327 void 328 ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) { 329 Record.push_back(T->getKeyword()); 330 Writer.AddNestedNameSpecifier(T->getQualifier(), Record); 331 Writer.AddIdentifierRef(T->getIdentifier(), Record); 332 Writer.AddTypeRef(T->isCanonicalUnqualified() ? QualType() 333 : T->getCanonicalTypeInternal(), 334 Record); 335 Code = TYPE_DEPENDENT_NAME; 336 } 337 338 void 339 ASTTypeWriter::VisitDependentTemplateSpecializationType( 340 const DependentTemplateSpecializationType *T) { 341 Record.push_back(T->getKeyword()); 342 Writer.AddNestedNameSpecifier(T->getQualifier(), Record); 343 Writer.AddIdentifierRef(T->getIdentifier(), Record); 344 Record.push_back(T->getNumArgs()); 345 for (DependentTemplateSpecializationType::iterator 346 I = T->begin(), E = T->end(); I != E; ++I) 347 Writer.AddTemplateArgument(*I, Record); 348 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION; 349 } 350 351 void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) { 352 Writer.AddTypeRef(T->getPattern(), Record); 353 if (llvm::Optional<unsigned> NumExpansions = T->getNumExpansions()) 354 Record.push_back(*NumExpansions + 1); 355 else 356 Record.push_back(0); 357 Code = TYPE_PACK_EXPANSION; 358 } 359 360 void ASTTypeWriter::VisitParenType(const ParenType *T) { 361 Writer.AddTypeRef(T->getInnerType(), Record); 362 Code = TYPE_PAREN; 363 } 364 365 void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) { 366 Record.push_back(T->getKeyword()); 367 Writer.AddNestedNameSpecifier(T->getQualifier(), Record); 368 Writer.AddTypeRef(T->getNamedType(), Record); 369 Code = TYPE_ELABORATED; 370 } 371 372 void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) { 373 Writer.AddDeclRef(T->getDecl()->getCanonicalDecl(), Record); 374 Writer.AddTypeRef(T->getInjectedSpecializationType(), Record); 375 Code = TYPE_INJECTED_CLASS_NAME; 376 } 377 378 void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) { 379 Writer.AddDeclRef(T->getDecl()->getCanonicalDecl(), Record); 380 Code = TYPE_OBJC_INTERFACE; 381 } 382 383 void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) { 384 Writer.AddTypeRef(T->getBaseType(), Record); 385 Record.push_back(T->getNumProtocols()); 386 for (ObjCObjectType::qual_iterator I = T->qual_begin(), 387 E = T->qual_end(); I != E; ++I) 388 Writer.AddDeclRef(*I, Record); 389 Code = TYPE_OBJC_OBJECT; 390 } 391 392 void 393 ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) { 394 Writer.AddTypeRef(T->getPointeeType(), Record); 395 Code = TYPE_OBJC_OBJECT_POINTER; 396 } 397 398 void 399 ASTTypeWriter::VisitAtomicType(const AtomicType *T) { 400 Writer.AddTypeRef(T->getValueType(), Record); 401 Code = TYPE_ATOMIC; 402 } 403 404 namespace { 405 406 class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> { 407 ASTWriter &Writer; 408 ASTWriter::RecordDataImpl &Record; 409 410 public: 411 TypeLocWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record) 412 : Writer(Writer), Record(Record) { } 413 414 #define ABSTRACT_TYPELOC(CLASS, PARENT) 415 #define TYPELOC(CLASS, PARENT) \ 416 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc); 417 #include "clang/AST/TypeLocNodes.def" 418 419 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc); 420 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc); 421 }; 422 423 } 424 425 void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 426 // nothing to do 427 } 428 void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 429 Writer.AddSourceLocation(TL.getBuiltinLoc(), Record); 430 if (TL.needsExtraLocalData()) { 431 Record.push_back(TL.getWrittenTypeSpec()); 432 Record.push_back(TL.getWrittenSignSpec()); 433 Record.push_back(TL.getWrittenWidthSpec()); 434 Record.push_back(TL.hasModeAttr()); 435 } 436 } 437 void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) { 438 Writer.AddSourceLocation(TL.getNameLoc(), Record); 439 } 440 void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) { 441 Writer.AddSourceLocation(TL.getStarLoc(), Record); 442 } 443 void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 444 Writer.AddSourceLocation(TL.getCaretLoc(), Record); 445 } 446 void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 447 Writer.AddSourceLocation(TL.getAmpLoc(), Record); 448 } 449 void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 450 Writer.AddSourceLocation(TL.getAmpAmpLoc(), Record); 451 } 452 void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 453 Writer.AddSourceLocation(TL.getStarLoc(), Record); 454 Writer.AddTypeSourceInfo(TL.getClassTInfo(), Record); 455 } 456 void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) { 457 Writer.AddSourceLocation(TL.getLBracketLoc(), Record); 458 Writer.AddSourceLocation(TL.getRBracketLoc(), Record); 459 Record.push_back(TL.getSizeExpr() ? 1 : 0); 460 if (TL.getSizeExpr()) 461 Writer.AddStmt(TL.getSizeExpr()); 462 } 463 void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) { 464 VisitArrayTypeLoc(TL); 465 } 466 void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) { 467 VisitArrayTypeLoc(TL); 468 } 469 void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) { 470 VisitArrayTypeLoc(TL); 471 } 472 void TypeLocWriter::VisitDependentSizedArrayTypeLoc( 473 DependentSizedArrayTypeLoc TL) { 474 VisitArrayTypeLoc(TL); 475 } 476 void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc( 477 DependentSizedExtVectorTypeLoc TL) { 478 Writer.AddSourceLocation(TL.getNameLoc(), Record); 479 } 480 void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) { 481 Writer.AddSourceLocation(TL.getNameLoc(), Record); 482 } 483 void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) { 484 Writer.AddSourceLocation(TL.getNameLoc(), Record); 485 } 486 void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) { 487 Writer.AddSourceLocation(TL.getLocalRangeBegin(), Record); 488 Writer.AddSourceLocation(TL.getLocalRangeEnd(), Record); 489 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) 490 Writer.AddDeclRef(TL.getArg(i), Record); 491 } 492 void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) { 493 VisitFunctionTypeLoc(TL); 494 } 495 void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) { 496 VisitFunctionTypeLoc(TL); 497 } 498 void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) { 499 Writer.AddSourceLocation(TL.getNameLoc(), Record); 500 } 501 void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) { 502 Writer.AddSourceLocation(TL.getNameLoc(), Record); 503 } 504 void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 505 Writer.AddSourceLocation(TL.getTypeofLoc(), Record); 506 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 507 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 508 } 509 void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 510 Writer.AddSourceLocation(TL.getTypeofLoc(), Record); 511 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 512 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 513 Writer.AddTypeSourceInfo(TL.getUnderlyingTInfo(), Record); 514 } 515 void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) { 516 Writer.AddSourceLocation(TL.getNameLoc(), Record); 517 } 518 void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) { 519 Writer.AddSourceLocation(TL.getKWLoc(), Record); 520 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 521 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 522 Writer.AddTypeSourceInfo(TL.getUnderlyingTInfo(), Record); 523 } 524 void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) { 525 Writer.AddSourceLocation(TL.getNameLoc(), Record); 526 } 527 void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) { 528 Writer.AddSourceLocation(TL.getNameLoc(), Record); 529 } 530 void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) { 531 Writer.AddSourceLocation(TL.getNameLoc(), Record); 532 } 533 void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) { 534 Writer.AddSourceLocation(TL.getAttrNameLoc(), Record); 535 if (TL.hasAttrOperand()) { 536 SourceRange range = TL.getAttrOperandParensRange(); 537 Writer.AddSourceLocation(range.getBegin(), Record); 538 Writer.AddSourceLocation(range.getEnd(), Record); 539 } 540 if (TL.hasAttrExprOperand()) { 541 Expr *operand = TL.getAttrExprOperand(); 542 Record.push_back(operand ? 1 : 0); 543 if (operand) Writer.AddStmt(operand); 544 } else if (TL.hasAttrEnumOperand()) { 545 Writer.AddSourceLocation(TL.getAttrEnumOperandLoc(), Record); 546 } 547 } 548 void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) { 549 Writer.AddSourceLocation(TL.getNameLoc(), Record); 550 } 551 void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc( 552 SubstTemplateTypeParmTypeLoc TL) { 553 Writer.AddSourceLocation(TL.getNameLoc(), Record); 554 } 555 void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc( 556 SubstTemplateTypeParmPackTypeLoc TL) { 557 Writer.AddSourceLocation(TL.getNameLoc(), Record); 558 } 559 void TypeLocWriter::VisitTemplateSpecializationTypeLoc( 560 TemplateSpecializationTypeLoc TL) { 561 Writer.AddSourceLocation(TL.getTemplateKeywordLoc(), Record); 562 Writer.AddSourceLocation(TL.getTemplateNameLoc(), Record); 563 Writer.AddSourceLocation(TL.getLAngleLoc(), Record); 564 Writer.AddSourceLocation(TL.getRAngleLoc(), Record); 565 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) 566 Writer.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(), 567 TL.getArgLoc(i).getLocInfo(), Record); 568 } 569 void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) { 570 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 571 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 572 } 573 void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { 574 Writer.AddSourceLocation(TL.getElaboratedKeywordLoc(), Record); 575 Writer.AddNestedNameSpecifierLoc(TL.getQualifierLoc(), Record); 576 } 577 void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) { 578 Writer.AddSourceLocation(TL.getNameLoc(), Record); 579 } 580 void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { 581 Writer.AddSourceLocation(TL.getElaboratedKeywordLoc(), Record); 582 Writer.AddNestedNameSpecifierLoc(TL.getQualifierLoc(), Record); 583 Writer.AddSourceLocation(TL.getNameLoc(), Record); 584 } 585 void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc( 586 DependentTemplateSpecializationTypeLoc TL) { 587 Writer.AddSourceLocation(TL.getElaboratedKeywordLoc(), Record); 588 Writer.AddNestedNameSpecifierLoc(TL.getQualifierLoc(), Record); 589 Writer.AddSourceLocation(TL.getTemplateKeywordLoc(), Record); 590 Writer.AddSourceLocation(TL.getTemplateNameLoc(), Record); 591 Writer.AddSourceLocation(TL.getLAngleLoc(), Record); 592 Writer.AddSourceLocation(TL.getRAngleLoc(), Record); 593 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) 594 Writer.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(), 595 TL.getArgLoc(I).getLocInfo(), Record); 596 } 597 void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) { 598 Writer.AddSourceLocation(TL.getEllipsisLoc(), Record); 599 } 600 void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 601 Writer.AddSourceLocation(TL.getNameLoc(), Record); 602 } 603 void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 604 Record.push_back(TL.hasBaseTypeAsWritten()); 605 Writer.AddSourceLocation(TL.getLAngleLoc(), Record); 606 Writer.AddSourceLocation(TL.getRAngleLoc(), Record); 607 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i) 608 Writer.AddSourceLocation(TL.getProtocolLoc(i), Record); 609 } 610 void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 611 Writer.AddSourceLocation(TL.getStarLoc(), Record); 612 } 613 void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) { 614 Writer.AddSourceLocation(TL.getKWLoc(), Record); 615 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 616 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 617 } 618 619 //===----------------------------------------------------------------------===// 620 // ASTWriter Implementation 621 //===----------------------------------------------------------------------===// 622 623 static void EmitBlockID(unsigned ID, const char *Name, 624 llvm::BitstreamWriter &Stream, 625 ASTWriter::RecordDataImpl &Record) { 626 Record.clear(); 627 Record.push_back(ID); 628 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record); 629 630 // Emit the block name if present. 631 if (Name == 0 || Name[0] == 0) return; 632 Record.clear(); 633 while (*Name) 634 Record.push_back(*Name++); 635 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record); 636 } 637 638 static void EmitRecordID(unsigned ID, const char *Name, 639 llvm::BitstreamWriter &Stream, 640 ASTWriter::RecordDataImpl &Record) { 641 Record.clear(); 642 Record.push_back(ID); 643 while (*Name) 644 Record.push_back(*Name++); 645 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record); 646 } 647 648 static void AddStmtsExprs(llvm::BitstreamWriter &Stream, 649 ASTWriter::RecordDataImpl &Record) { 650 #define RECORD(X) EmitRecordID(X, #X, Stream, Record) 651 RECORD(STMT_STOP); 652 RECORD(STMT_NULL_PTR); 653 RECORD(STMT_NULL); 654 RECORD(STMT_COMPOUND); 655 RECORD(STMT_CASE); 656 RECORD(STMT_DEFAULT); 657 RECORD(STMT_LABEL); 658 RECORD(STMT_ATTRIBUTED); 659 RECORD(STMT_IF); 660 RECORD(STMT_SWITCH); 661 RECORD(STMT_WHILE); 662 RECORD(STMT_DO); 663 RECORD(STMT_FOR); 664 RECORD(STMT_GOTO); 665 RECORD(STMT_INDIRECT_GOTO); 666 RECORD(STMT_CONTINUE); 667 RECORD(STMT_BREAK); 668 RECORD(STMT_RETURN); 669 RECORD(STMT_DECL); 670 RECORD(STMT_GCCASM); 671 RECORD(STMT_MSASM); 672 RECORD(EXPR_PREDEFINED); 673 RECORD(EXPR_DECL_REF); 674 RECORD(EXPR_INTEGER_LITERAL); 675 RECORD(EXPR_FLOATING_LITERAL); 676 RECORD(EXPR_IMAGINARY_LITERAL); 677 RECORD(EXPR_STRING_LITERAL); 678 RECORD(EXPR_CHARACTER_LITERAL); 679 RECORD(EXPR_PAREN); 680 RECORD(EXPR_UNARY_OPERATOR); 681 RECORD(EXPR_SIZEOF_ALIGN_OF); 682 RECORD(EXPR_ARRAY_SUBSCRIPT); 683 RECORD(EXPR_CALL); 684 RECORD(EXPR_MEMBER); 685 RECORD(EXPR_BINARY_OPERATOR); 686 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR); 687 RECORD(EXPR_CONDITIONAL_OPERATOR); 688 RECORD(EXPR_IMPLICIT_CAST); 689 RECORD(EXPR_CSTYLE_CAST); 690 RECORD(EXPR_COMPOUND_LITERAL); 691 RECORD(EXPR_EXT_VECTOR_ELEMENT); 692 RECORD(EXPR_INIT_LIST); 693 RECORD(EXPR_DESIGNATED_INIT); 694 RECORD(EXPR_IMPLICIT_VALUE_INIT); 695 RECORD(EXPR_VA_ARG); 696 RECORD(EXPR_ADDR_LABEL); 697 RECORD(EXPR_STMT); 698 RECORD(EXPR_CHOOSE); 699 RECORD(EXPR_GNU_NULL); 700 RECORD(EXPR_SHUFFLE_VECTOR); 701 RECORD(EXPR_BLOCK); 702 RECORD(EXPR_GENERIC_SELECTION); 703 RECORD(EXPR_OBJC_STRING_LITERAL); 704 RECORD(EXPR_OBJC_BOXED_EXPRESSION); 705 RECORD(EXPR_OBJC_ARRAY_LITERAL); 706 RECORD(EXPR_OBJC_DICTIONARY_LITERAL); 707 RECORD(EXPR_OBJC_ENCODE); 708 RECORD(EXPR_OBJC_SELECTOR_EXPR); 709 RECORD(EXPR_OBJC_PROTOCOL_EXPR); 710 RECORD(EXPR_OBJC_IVAR_REF_EXPR); 711 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR); 712 RECORD(EXPR_OBJC_KVC_REF_EXPR); 713 RECORD(EXPR_OBJC_MESSAGE_EXPR); 714 RECORD(STMT_OBJC_FOR_COLLECTION); 715 RECORD(STMT_OBJC_CATCH); 716 RECORD(STMT_OBJC_FINALLY); 717 RECORD(STMT_OBJC_AT_TRY); 718 RECORD(STMT_OBJC_AT_SYNCHRONIZED); 719 RECORD(STMT_OBJC_AT_THROW); 720 RECORD(EXPR_OBJC_BOOL_LITERAL); 721 RECORD(EXPR_CXX_OPERATOR_CALL); 722 RECORD(EXPR_CXX_CONSTRUCT); 723 RECORD(EXPR_CXX_STATIC_CAST); 724 RECORD(EXPR_CXX_DYNAMIC_CAST); 725 RECORD(EXPR_CXX_REINTERPRET_CAST); 726 RECORD(EXPR_CXX_CONST_CAST); 727 RECORD(EXPR_CXX_FUNCTIONAL_CAST); 728 RECORD(EXPR_USER_DEFINED_LITERAL); 729 RECORD(EXPR_CXX_BOOL_LITERAL); 730 RECORD(EXPR_CXX_NULL_PTR_LITERAL); 731 RECORD(EXPR_CXX_TYPEID_EXPR); 732 RECORD(EXPR_CXX_TYPEID_TYPE); 733 RECORD(EXPR_CXX_UUIDOF_EXPR); 734 RECORD(EXPR_CXX_UUIDOF_TYPE); 735 RECORD(EXPR_CXX_THIS); 736 RECORD(EXPR_CXX_THROW); 737 RECORD(EXPR_CXX_DEFAULT_ARG); 738 RECORD(EXPR_CXX_BIND_TEMPORARY); 739 RECORD(EXPR_CXX_SCALAR_VALUE_INIT); 740 RECORD(EXPR_CXX_NEW); 741 RECORD(EXPR_CXX_DELETE); 742 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR); 743 RECORD(EXPR_EXPR_WITH_CLEANUPS); 744 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER); 745 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF); 746 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT); 747 RECORD(EXPR_CXX_UNRESOLVED_MEMBER); 748 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP); 749 RECORD(EXPR_CXX_UNARY_TYPE_TRAIT); 750 RECORD(EXPR_CXX_NOEXCEPT); 751 RECORD(EXPR_OPAQUE_VALUE); 752 RECORD(EXPR_BINARY_TYPE_TRAIT); 753 RECORD(EXPR_PACK_EXPANSION); 754 RECORD(EXPR_SIZEOF_PACK); 755 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK); 756 RECORD(EXPR_CUDA_KERNEL_CALL); 757 #undef RECORD 758 } 759 760 void ASTWriter::WriteBlockInfoBlock() { 761 RecordData Record; 762 Stream.EnterSubblock(llvm::bitc::BLOCKINFO_BLOCK_ID, 3); 763 764 #define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record) 765 #define RECORD(X) EmitRecordID(X, #X, Stream, Record) 766 767 // AST Top-Level Block. 768 BLOCK(AST_BLOCK); 769 RECORD(ORIGINAL_FILE_NAME); 770 RECORD(ORIGINAL_FILE_ID); 771 RECORD(TYPE_OFFSET); 772 RECORD(DECL_OFFSET); 773 RECORD(LANGUAGE_OPTIONS); 774 RECORD(METADATA); 775 RECORD(IDENTIFIER_OFFSET); 776 RECORD(IDENTIFIER_TABLE); 777 RECORD(EXTERNAL_DEFINITIONS); 778 RECORD(SPECIAL_TYPES); 779 RECORD(STATISTICS); 780 RECORD(TENTATIVE_DEFINITIONS); 781 RECORD(UNUSED_FILESCOPED_DECLS); 782 RECORD(LOCALLY_SCOPED_EXTERNAL_DECLS); 783 RECORD(SELECTOR_OFFSETS); 784 RECORD(METHOD_POOL); 785 RECORD(PP_COUNTER_VALUE); 786 RECORD(SOURCE_LOCATION_OFFSETS); 787 RECORD(SOURCE_LOCATION_PRELOADS); 788 RECORD(STAT_CACHE); 789 RECORD(EXT_VECTOR_DECLS); 790 RECORD(VERSION_CONTROL_BRANCH_REVISION); 791 RECORD(PPD_ENTITIES_OFFSETS); 792 RECORD(IMPORTS); 793 RECORD(REFERENCED_SELECTOR_POOL); 794 RECORD(TU_UPDATE_LEXICAL); 795 RECORD(LOCAL_REDECLARATIONS_MAP); 796 RECORD(SEMA_DECL_REFS); 797 RECORD(WEAK_UNDECLARED_IDENTIFIERS); 798 RECORD(PENDING_IMPLICIT_INSTANTIATIONS); 799 RECORD(DECL_REPLACEMENTS); 800 RECORD(UPDATE_VISIBLE); 801 RECORD(DECL_UPDATE_OFFSETS); 802 RECORD(DECL_UPDATES); 803 RECORD(CXX_BASE_SPECIFIER_OFFSETS); 804 RECORD(DIAG_PRAGMA_MAPPINGS); 805 RECORD(CUDA_SPECIAL_DECL_REFS); 806 RECORD(HEADER_SEARCH_TABLE); 807 RECORD(ORIGINAL_PCH_DIR); 808 RECORD(FP_PRAGMA_OPTIONS); 809 RECORD(OPENCL_EXTENSIONS); 810 RECORD(DELEGATING_CTORS); 811 RECORD(FILE_SOURCE_LOCATION_OFFSETS); 812 RECORD(KNOWN_NAMESPACES); 813 RECORD(MODULE_OFFSET_MAP); 814 RECORD(SOURCE_MANAGER_LINE_TABLE); 815 RECORD(OBJC_CATEGORIES_MAP); 816 RECORD(FILE_SORTED_DECLS); 817 RECORD(IMPORTED_MODULES); 818 RECORD(MERGED_DECLARATIONS); 819 RECORD(LOCAL_REDECLARATIONS); 820 RECORD(OBJC_CATEGORIES); 821 822 // SourceManager Block. 823 BLOCK(SOURCE_MANAGER_BLOCK); 824 RECORD(SM_SLOC_FILE_ENTRY); 825 RECORD(SM_SLOC_BUFFER_ENTRY); 826 RECORD(SM_SLOC_BUFFER_BLOB); 827 RECORD(SM_SLOC_EXPANSION_ENTRY); 828 829 // Preprocessor Block. 830 BLOCK(PREPROCESSOR_BLOCK); 831 RECORD(PP_MACRO_OBJECT_LIKE); 832 RECORD(PP_MACRO_FUNCTION_LIKE); 833 RECORD(PP_TOKEN); 834 835 // Decls and Types block. 836 BLOCK(DECLTYPES_BLOCK); 837 RECORD(TYPE_EXT_QUAL); 838 RECORD(TYPE_COMPLEX); 839 RECORD(TYPE_POINTER); 840 RECORD(TYPE_BLOCK_POINTER); 841 RECORD(TYPE_LVALUE_REFERENCE); 842 RECORD(TYPE_RVALUE_REFERENCE); 843 RECORD(TYPE_MEMBER_POINTER); 844 RECORD(TYPE_CONSTANT_ARRAY); 845 RECORD(TYPE_INCOMPLETE_ARRAY); 846 RECORD(TYPE_VARIABLE_ARRAY); 847 RECORD(TYPE_VECTOR); 848 RECORD(TYPE_EXT_VECTOR); 849 RECORD(TYPE_FUNCTION_PROTO); 850 RECORD(TYPE_FUNCTION_NO_PROTO); 851 RECORD(TYPE_TYPEDEF); 852 RECORD(TYPE_TYPEOF_EXPR); 853 RECORD(TYPE_TYPEOF); 854 RECORD(TYPE_RECORD); 855 RECORD(TYPE_ENUM); 856 RECORD(TYPE_OBJC_INTERFACE); 857 RECORD(TYPE_OBJC_OBJECT); 858 RECORD(TYPE_OBJC_OBJECT_POINTER); 859 RECORD(TYPE_DECLTYPE); 860 RECORD(TYPE_ELABORATED); 861 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM); 862 RECORD(TYPE_UNRESOLVED_USING); 863 RECORD(TYPE_INJECTED_CLASS_NAME); 864 RECORD(TYPE_OBJC_OBJECT); 865 RECORD(TYPE_TEMPLATE_TYPE_PARM); 866 RECORD(TYPE_TEMPLATE_SPECIALIZATION); 867 RECORD(TYPE_DEPENDENT_NAME); 868 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION); 869 RECORD(TYPE_DEPENDENT_SIZED_ARRAY); 870 RECORD(TYPE_PAREN); 871 RECORD(TYPE_PACK_EXPANSION); 872 RECORD(TYPE_ATTRIBUTED); 873 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK); 874 RECORD(TYPE_ATOMIC); 875 RECORD(DECL_TYPEDEF); 876 RECORD(DECL_ENUM); 877 RECORD(DECL_RECORD); 878 RECORD(DECL_ENUM_CONSTANT); 879 RECORD(DECL_FUNCTION); 880 RECORD(DECL_OBJC_METHOD); 881 RECORD(DECL_OBJC_INTERFACE); 882 RECORD(DECL_OBJC_PROTOCOL); 883 RECORD(DECL_OBJC_IVAR); 884 RECORD(DECL_OBJC_AT_DEFS_FIELD); 885 RECORD(DECL_OBJC_CATEGORY); 886 RECORD(DECL_OBJC_CATEGORY_IMPL); 887 RECORD(DECL_OBJC_IMPLEMENTATION); 888 RECORD(DECL_OBJC_COMPATIBLE_ALIAS); 889 RECORD(DECL_OBJC_PROPERTY); 890 RECORD(DECL_OBJC_PROPERTY_IMPL); 891 RECORD(DECL_FIELD); 892 RECORD(DECL_VAR); 893 RECORD(DECL_IMPLICIT_PARAM); 894 RECORD(DECL_PARM_VAR); 895 RECORD(DECL_FILE_SCOPE_ASM); 896 RECORD(DECL_BLOCK); 897 RECORD(DECL_CONTEXT_LEXICAL); 898 RECORD(DECL_CONTEXT_VISIBLE); 899 RECORD(DECL_NAMESPACE); 900 RECORD(DECL_NAMESPACE_ALIAS); 901 RECORD(DECL_USING); 902 RECORD(DECL_USING_SHADOW); 903 RECORD(DECL_USING_DIRECTIVE); 904 RECORD(DECL_UNRESOLVED_USING_VALUE); 905 RECORD(DECL_UNRESOLVED_USING_TYPENAME); 906 RECORD(DECL_LINKAGE_SPEC); 907 RECORD(DECL_CXX_RECORD); 908 RECORD(DECL_CXX_METHOD); 909 RECORD(DECL_CXX_CONSTRUCTOR); 910 RECORD(DECL_CXX_DESTRUCTOR); 911 RECORD(DECL_CXX_CONVERSION); 912 RECORD(DECL_ACCESS_SPEC); 913 RECORD(DECL_FRIEND); 914 RECORD(DECL_FRIEND_TEMPLATE); 915 RECORD(DECL_CLASS_TEMPLATE); 916 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION); 917 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION); 918 RECORD(DECL_FUNCTION_TEMPLATE); 919 RECORD(DECL_TEMPLATE_TYPE_PARM); 920 RECORD(DECL_NON_TYPE_TEMPLATE_PARM); 921 RECORD(DECL_TEMPLATE_TEMPLATE_PARM); 922 RECORD(DECL_STATIC_ASSERT); 923 RECORD(DECL_CXX_BASE_SPECIFIERS); 924 RECORD(DECL_INDIRECTFIELD); 925 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK); 926 927 // Statements and Exprs can occur in the Decls and Types block. 928 AddStmtsExprs(Stream, Record); 929 930 BLOCK(PREPROCESSOR_DETAIL_BLOCK); 931 RECORD(PPD_MACRO_EXPANSION); 932 RECORD(PPD_MACRO_DEFINITION); 933 RECORD(PPD_INCLUSION_DIRECTIVE); 934 935 #undef RECORD 936 #undef BLOCK 937 Stream.ExitBlock(); 938 } 939 940 /// \brief Adjusts the given filename to only write out the portion of the 941 /// filename that is not part of the system root directory. 942 /// 943 /// \param Filename the file name to adjust. 944 /// 945 /// \param isysroot When non-NULL, the PCH file is a relocatable PCH file and 946 /// the returned filename will be adjusted by this system root. 947 /// 948 /// \returns either the original filename (if it needs no adjustment) or the 949 /// adjusted filename (which points into the @p Filename parameter). 950 static const char * 951 adjustFilenameForRelocatablePCH(const char *Filename, StringRef isysroot) { 952 assert(Filename && "No file name to adjust?"); 953 954 if (isysroot.empty()) 955 return Filename; 956 957 // Verify that the filename and the system root have the same prefix. 958 unsigned Pos = 0; 959 for (; Filename[Pos] && Pos < isysroot.size(); ++Pos) 960 if (Filename[Pos] != isysroot[Pos]) 961 return Filename; // Prefixes don't match. 962 963 // We hit the end of the filename before we hit the end of the system root. 964 if (!Filename[Pos]) 965 return Filename; 966 967 // If the file name has a '/' at the current position, skip over the '/'. 968 // We distinguish sysroot-based includes from absolute includes by the 969 // absence of '/' at the beginning of sysroot-based includes. 970 if (Filename[Pos] == '/') 971 ++Pos; 972 973 return Filename + Pos; 974 } 975 976 /// \brief Write the AST metadata (e.g., i686-apple-darwin9). 977 void ASTWriter::WriteMetadata(ASTContext &Context, StringRef isysroot, 978 const std::string &OutputFile) { 979 using namespace llvm; 980 981 // Metadata 982 const TargetInfo &Target = Context.getTargetInfo(); 983 BitCodeAbbrev *MetaAbbrev = new BitCodeAbbrev(); 984 MetaAbbrev->Add(BitCodeAbbrevOp(METADATA)); 985 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // AST major 986 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // AST minor 987 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang major 988 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang minor 989 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable 990 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Has errors 991 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Target triple 992 unsigned MetaAbbrevCode = Stream.EmitAbbrev(MetaAbbrev); 993 994 RecordData Record; 995 Record.push_back(METADATA); 996 Record.push_back(VERSION_MAJOR); 997 Record.push_back(VERSION_MINOR); 998 Record.push_back(CLANG_VERSION_MAJOR); 999 Record.push_back(CLANG_VERSION_MINOR); 1000 Record.push_back(!isysroot.empty()); 1001 Record.push_back(ASTHasCompilerErrors); 1002 const std::string &Triple = Target.getTriple().getTriple(); 1003 Stream.EmitRecordWithBlob(MetaAbbrevCode, Record, Triple); 1004 1005 if (Chain) { 1006 serialization::ModuleManager &Mgr = Chain->getModuleManager(); 1007 llvm::SmallVector<char, 128> ModulePaths; 1008 Record.clear(); 1009 1010 for (ModuleManager::ModuleIterator M = Mgr.begin(), MEnd = Mgr.end(); 1011 M != MEnd; ++M) { 1012 // Skip modules that weren't directly imported. 1013 if (!(*M)->isDirectlyImported()) 1014 continue; 1015 1016 Record.push_back((unsigned)(*M)->Kind); // FIXME: Stable encoding 1017 // FIXME: Write import location, once it matters. 1018 // FIXME: This writes the absolute path for AST files we depend on. 1019 const std::string &FileName = (*M)->FileName; 1020 Record.push_back(FileName.size()); 1021 Record.append(FileName.begin(), FileName.end()); 1022 } 1023 Stream.EmitRecord(IMPORTS, Record); 1024 } 1025 1026 // Original file name and file ID 1027 SourceManager &SM = Context.getSourceManager(); 1028 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) { 1029 BitCodeAbbrev *FileAbbrev = new BitCodeAbbrev(); 1030 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE_NAME)); 1031 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1032 unsigned FileAbbrevCode = Stream.EmitAbbrev(FileAbbrev); 1033 1034 SmallString<128> MainFilePath(MainFile->getName()); 1035 1036 llvm::sys::fs::make_absolute(MainFilePath); 1037 1038 const char *MainFileNameStr = MainFilePath.c_str(); 1039 MainFileNameStr = adjustFilenameForRelocatablePCH(MainFileNameStr, 1040 isysroot); 1041 RecordData Record; 1042 Record.push_back(ORIGINAL_FILE_NAME); 1043 Stream.EmitRecordWithBlob(FileAbbrevCode, Record, MainFileNameStr); 1044 1045 Record.clear(); 1046 Record.push_back(SM.getMainFileID().getOpaqueValue()); 1047 Stream.EmitRecord(ORIGINAL_FILE_ID, Record); 1048 } 1049 1050 // Original PCH directory 1051 if (!OutputFile.empty() && OutputFile != "-") { 1052 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1053 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR)); 1054 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1055 unsigned AbbrevCode = Stream.EmitAbbrev(Abbrev); 1056 1057 SmallString<128> OutputPath(OutputFile); 1058 1059 llvm::sys::fs::make_absolute(OutputPath); 1060 StringRef origDir = llvm::sys::path::parent_path(OutputPath); 1061 1062 RecordData Record; 1063 Record.push_back(ORIGINAL_PCH_DIR); 1064 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir); 1065 } 1066 1067 // Repository branch/version information. 1068 BitCodeAbbrev *RepoAbbrev = new BitCodeAbbrev(); 1069 RepoAbbrev->Add(BitCodeAbbrevOp(VERSION_CONTROL_BRANCH_REVISION)); 1070 RepoAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag 1071 unsigned RepoAbbrevCode = Stream.EmitAbbrev(RepoAbbrev); 1072 Record.clear(); 1073 Record.push_back(VERSION_CONTROL_BRANCH_REVISION); 1074 Stream.EmitRecordWithBlob(RepoAbbrevCode, Record, 1075 getClangFullRepositoryVersion()); 1076 } 1077 1078 /// \brief Write the LangOptions structure. 1079 void ASTWriter::WriteLanguageOptions(const LangOptions &LangOpts) { 1080 RecordData Record; 1081 #define LANGOPT(Name, Bits, Default, Description) \ 1082 Record.push_back(LangOpts.Name); 1083 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1084 Record.push_back(static_cast<unsigned>(LangOpts.get##Name())); 1085 #include "clang/Basic/LangOptions.def" 1086 1087 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind()); 1088 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record); 1089 1090 Record.push_back(LangOpts.CurrentModule.size()); 1091 Record.append(LangOpts.CurrentModule.begin(), LangOpts.CurrentModule.end()); 1092 Stream.EmitRecord(LANGUAGE_OPTIONS, Record); 1093 } 1094 1095 //===----------------------------------------------------------------------===// 1096 // stat cache Serialization 1097 //===----------------------------------------------------------------------===// 1098 1099 namespace { 1100 // Trait used for the on-disk hash table of stat cache results. 1101 class ASTStatCacheTrait { 1102 public: 1103 typedef const char * key_type; 1104 typedef key_type key_type_ref; 1105 1106 typedef struct stat data_type; 1107 typedef const data_type &data_type_ref; 1108 1109 static unsigned ComputeHash(const char *path) { 1110 return llvm::HashString(path); 1111 } 1112 1113 std::pair<unsigned,unsigned> 1114 EmitKeyDataLength(raw_ostream& Out, const char *path, 1115 data_type_ref Data) { 1116 unsigned StrLen = strlen(path); 1117 clang::io::Emit16(Out, StrLen); 1118 unsigned DataLen = 4 + 4 + 2 + 8 + 8; 1119 clang::io::Emit8(Out, DataLen); 1120 return std::make_pair(StrLen + 1, DataLen); 1121 } 1122 1123 void EmitKey(raw_ostream& Out, const char *path, unsigned KeyLen) { 1124 Out.write(path, KeyLen); 1125 } 1126 1127 void EmitData(raw_ostream &Out, key_type_ref, 1128 data_type_ref Data, unsigned DataLen) { 1129 using namespace clang::io; 1130 uint64_t Start = Out.tell(); (void)Start; 1131 1132 Emit32(Out, (uint32_t) Data.st_ino); 1133 Emit32(Out, (uint32_t) Data.st_dev); 1134 Emit16(Out, (uint16_t) Data.st_mode); 1135 Emit64(Out, (uint64_t) Data.st_mtime); 1136 Emit64(Out, (uint64_t) Data.st_size); 1137 1138 assert(Out.tell() - Start == DataLen && "Wrong data length"); 1139 } 1140 }; 1141 } // end anonymous namespace 1142 1143 /// \brief Write the stat() system call cache to the AST file. 1144 void ASTWriter::WriteStatCache(MemorizeStatCalls &StatCalls) { 1145 // Build the on-disk hash table containing information about every 1146 // stat() call. 1147 OnDiskChainedHashTableGenerator<ASTStatCacheTrait> Generator; 1148 unsigned NumStatEntries = 0; 1149 for (MemorizeStatCalls::iterator Stat = StatCalls.begin(), 1150 StatEnd = StatCalls.end(); 1151 Stat != StatEnd; ++Stat, ++NumStatEntries) { 1152 StringRef Filename = Stat->first(); 1153 Generator.insert(Filename.data(), Stat->second); 1154 } 1155 1156 // Create the on-disk hash table in a buffer. 1157 SmallString<4096> StatCacheData; 1158 uint32_t BucketOffset; 1159 { 1160 llvm::raw_svector_ostream Out(StatCacheData); 1161 // Make sure that no bucket is at offset 0 1162 clang::io::Emit32(Out, 0); 1163 BucketOffset = Generator.Emit(Out); 1164 } 1165 1166 // Create a blob abbreviation 1167 using namespace llvm; 1168 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1169 Abbrev->Add(BitCodeAbbrevOp(STAT_CACHE)); 1170 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1171 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1172 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1173 unsigned StatCacheAbbrev = Stream.EmitAbbrev(Abbrev); 1174 1175 // Write the stat cache 1176 RecordData Record; 1177 Record.push_back(STAT_CACHE); 1178 Record.push_back(BucketOffset); 1179 Record.push_back(NumStatEntries); 1180 Stream.EmitRecordWithBlob(StatCacheAbbrev, Record, StatCacheData.str()); 1181 } 1182 1183 //===----------------------------------------------------------------------===// 1184 // Source Manager Serialization 1185 //===----------------------------------------------------------------------===// 1186 1187 /// \brief Create an abbreviation for the SLocEntry that refers to a 1188 /// file. 1189 static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) { 1190 using namespace llvm; 1191 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1192 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY)); 1193 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1194 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location 1195 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic 1196 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives 1197 // FileEntry fields. 1198 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size 1199 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time 1200 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // BufferOverridden 1201 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs 1202 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex 1203 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls 1204 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1205 return Stream.EmitAbbrev(Abbrev); 1206 } 1207 1208 /// \brief Create an abbreviation for the SLocEntry that refers to a 1209 /// buffer. 1210 static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) { 1211 using namespace llvm; 1212 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1213 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY)); 1214 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1215 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location 1216 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic 1217 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives 1218 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob 1219 return Stream.EmitAbbrev(Abbrev); 1220 } 1221 1222 /// \brief Create an abbreviation for the SLocEntry that refers to a 1223 /// buffer's blob. 1224 static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream) { 1225 using namespace llvm; 1226 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1227 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_BLOB)); 1228 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob 1229 return Stream.EmitAbbrev(Abbrev); 1230 } 1231 1232 /// \brief Create an abbreviation for the SLocEntry that refers to a macro 1233 /// expansion. 1234 static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) { 1235 using namespace llvm; 1236 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1237 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY)); 1238 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1239 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location 1240 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location 1241 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location 1242 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length 1243 return Stream.EmitAbbrev(Abbrev); 1244 } 1245 1246 namespace { 1247 // Trait used for the on-disk hash table of header search information. 1248 class HeaderFileInfoTrait { 1249 ASTWriter &Writer; 1250 1251 // Keep track of the framework names we've used during serialization. 1252 SmallVector<char, 128> FrameworkStringData; 1253 llvm::StringMap<unsigned> FrameworkNameOffset; 1254 1255 public: 1256 HeaderFileInfoTrait(ASTWriter &Writer) 1257 : Writer(Writer) { } 1258 1259 typedef const char *key_type; 1260 typedef key_type key_type_ref; 1261 1262 typedef HeaderFileInfo data_type; 1263 typedef const data_type &data_type_ref; 1264 1265 static unsigned ComputeHash(const char *path) { 1266 // The hash is based only on the filename portion of the key, so that the 1267 // reader can match based on filenames when symlinking or excess path 1268 // elements ("foo/../", "../") change the form of the name. However, 1269 // complete path is still the key. 1270 return llvm::HashString(llvm::sys::path::filename(path)); 1271 } 1272 1273 std::pair<unsigned,unsigned> 1274 EmitKeyDataLength(raw_ostream& Out, const char *path, 1275 data_type_ref Data) { 1276 unsigned StrLen = strlen(path); 1277 clang::io::Emit16(Out, StrLen); 1278 unsigned DataLen = 1 + 2 + 4 + 4; 1279 clang::io::Emit8(Out, DataLen); 1280 return std::make_pair(StrLen + 1, DataLen); 1281 } 1282 1283 void EmitKey(raw_ostream& Out, const char *path, unsigned KeyLen) { 1284 Out.write(path, KeyLen); 1285 } 1286 1287 void EmitData(raw_ostream &Out, key_type_ref, 1288 data_type_ref Data, unsigned DataLen) { 1289 using namespace clang::io; 1290 uint64_t Start = Out.tell(); (void)Start; 1291 1292 unsigned char Flags = (Data.isImport << 5) 1293 | (Data.isPragmaOnce << 4) 1294 | (Data.DirInfo << 2) 1295 | (Data.Resolved << 1) 1296 | Data.IndexHeaderMapHeader; 1297 Emit8(Out, (uint8_t)Flags); 1298 Emit16(Out, (uint16_t) Data.NumIncludes); 1299 1300 if (!Data.ControllingMacro) 1301 Emit32(Out, (uint32_t)Data.ControllingMacroID); 1302 else 1303 Emit32(Out, (uint32_t)Writer.getIdentifierRef(Data.ControllingMacro)); 1304 1305 unsigned Offset = 0; 1306 if (!Data.Framework.empty()) { 1307 // If this header refers into a framework, save the framework name. 1308 llvm::StringMap<unsigned>::iterator Pos 1309 = FrameworkNameOffset.find(Data.Framework); 1310 if (Pos == FrameworkNameOffset.end()) { 1311 Offset = FrameworkStringData.size() + 1; 1312 FrameworkStringData.append(Data.Framework.begin(), 1313 Data.Framework.end()); 1314 FrameworkStringData.push_back(0); 1315 1316 FrameworkNameOffset[Data.Framework] = Offset; 1317 } else 1318 Offset = Pos->second; 1319 } 1320 Emit32(Out, Offset); 1321 1322 assert(Out.tell() - Start == DataLen && "Wrong data length"); 1323 } 1324 1325 const char *strings_begin() const { return FrameworkStringData.begin(); } 1326 const char *strings_end() const { return FrameworkStringData.end(); } 1327 }; 1328 } // end anonymous namespace 1329 1330 /// \brief Write the header search block for the list of files that 1331 /// 1332 /// \param HS The header search structure to save. 1333 void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS, StringRef isysroot) { 1334 SmallVector<const FileEntry *, 16> FilesByUID; 1335 HS.getFileMgr().GetUniqueIDMapping(FilesByUID); 1336 1337 if (FilesByUID.size() > HS.header_file_size()) 1338 FilesByUID.resize(HS.header_file_size()); 1339 1340 HeaderFileInfoTrait GeneratorTrait(*this); 1341 OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator; 1342 SmallVector<const char *, 4> SavedStrings; 1343 unsigned NumHeaderSearchEntries = 0; 1344 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) { 1345 const FileEntry *File = FilesByUID[UID]; 1346 if (!File) 1347 continue; 1348 1349 // Use HeaderSearch's getFileInfo to make sure we get the HeaderFileInfo 1350 // from the external source if it was not provided already. 1351 const HeaderFileInfo &HFI = HS.getFileInfo(File); 1352 if (HFI.External && Chain) 1353 continue; 1354 1355 // Turn the file name into an absolute path, if it isn't already. 1356 const char *Filename = File->getName(); 1357 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1358 1359 // If we performed any translation on the file name at all, we need to 1360 // save this string, since the generator will refer to it later. 1361 if (Filename != File->getName()) { 1362 Filename = strdup(Filename); 1363 SavedStrings.push_back(Filename); 1364 } 1365 1366 Generator.insert(Filename, HFI, GeneratorTrait); 1367 ++NumHeaderSearchEntries; 1368 } 1369 1370 // Create the on-disk hash table in a buffer. 1371 SmallString<4096> TableData; 1372 uint32_t BucketOffset; 1373 { 1374 llvm::raw_svector_ostream Out(TableData); 1375 // Make sure that no bucket is at offset 0 1376 clang::io::Emit32(Out, 0); 1377 BucketOffset = Generator.Emit(Out, GeneratorTrait); 1378 } 1379 1380 // Create a blob abbreviation 1381 using namespace llvm; 1382 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1383 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE)); 1384 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1385 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1386 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1387 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1388 unsigned TableAbbrev = Stream.EmitAbbrev(Abbrev); 1389 1390 // Write the header search table 1391 RecordData Record; 1392 Record.push_back(HEADER_SEARCH_TABLE); 1393 Record.push_back(BucketOffset); 1394 Record.push_back(NumHeaderSearchEntries); 1395 Record.push_back(TableData.size()); 1396 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end()); 1397 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData.str()); 1398 1399 // Free all of the strings we had to duplicate. 1400 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I) 1401 free((void*)SavedStrings[I]); 1402 } 1403 1404 /// \brief Writes the block containing the serialized form of the 1405 /// source manager. 1406 /// 1407 /// TODO: We should probably use an on-disk hash table (stored in a 1408 /// blob), indexed based on the file name, so that we only create 1409 /// entries for files that we actually need. In the common case (no 1410 /// errors), we probably won't have to create file entries for any of 1411 /// the files in the AST. 1412 void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr, 1413 const Preprocessor &PP, 1414 StringRef isysroot) { 1415 RecordData Record; 1416 1417 // Enter the source manager block. 1418 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 3); 1419 1420 // Abbreviations for the various kinds of source-location entries. 1421 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream); 1422 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream); 1423 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream); 1424 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream); 1425 1426 // Write out the source location entry table. We skip the first 1427 // entry, which is always the same dummy entry. 1428 std::vector<uint32_t> SLocEntryOffsets; 1429 // Write out the offsets of only source location file entries. 1430 // We will go through them in ASTReader::validateFileEntries(). 1431 std::vector<uint32_t> SLocFileEntryOffsets; 1432 RecordData PreloadSLocs; 1433 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1); 1434 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); 1435 I != N; ++I) { 1436 // Get this source location entry. 1437 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I); 1438 1439 // Record the offset of this source-location entry. 1440 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo()); 1441 1442 // Figure out which record code to use. 1443 unsigned Code; 1444 if (SLoc->isFile()) { 1445 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache(); 1446 if (Cache->OrigEntry) { 1447 Code = SM_SLOC_FILE_ENTRY; 1448 SLocFileEntryOffsets.push_back(Stream.GetCurrentBitNo()); 1449 } else 1450 Code = SM_SLOC_BUFFER_ENTRY; 1451 } else 1452 Code = SM_SLOC_EXPANSION_ENTRY; 1453 Record.clear(); 1454 Record.push_back(Code); 1455 1456 // Starting offset of this entry within this module, so skip the dummy. 1457 Record.push_back(SLoc->getOffset() - 2); 1458 if (SLoc->isFile()) { 1459 const SrcMgr::FileInfo &File = SLoc->getFile(); 1460 Record.push_back(File.getIncludeLoc().getRawEncoding()); 1461 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding 1462 Record.push_back(File.hasLineDirectives()); 1463 1464 const SrcMgr::ContentCache *Content = File.getContentCache(); 1465 if (Content->OrigEntry) { 1466 assert(Content->OrigEntry == Content->ContentsEntry && 1467 "Writing to AST an overridden file is not supported"); 1468 1469 // The source location entry is a file. The blob associated 1470 // with this entry is the file name. 1471 1472 // Emit size/modification time for this file. 1473 Record.push_back(Content->OrigEntry->getSize()); 1474 Record.push_back(Content->OrigEntry->getModificationTime()); 1475 Record.push_back(Content->BufferOverridden); 1476 Record.push_back(File.NumCreatedFIDs); 1477 1478 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(SLoc); 1479 if (FDI != FileDeclIDs.end()) { 1480 Record.push_back(FDI->second->FirstDeclIndex); 1481 Record.push_back(FDI->second->DeclIDs.size()); 1482 } else { 1483 Record.push_back(0); 1484 Record.push_back(0); 1485 } 1486 1487 // Turn the file name into an absolute path, if it isn't already. 1488 const char *Filename = Content->OrigEntry->getName(); 1489 SmallString<128> FilePath(Filename); 1490 1491 // Ask the file manager to fixup the relative path for us. This will 1492 // honor the working directory. 1493 SourceMgr.getFileManager().FixupRelativePath(FilePath); 1494 1495 // FIXME: This call to make_absolute shouldn't be necessary, the 1496 // call to FixupRelativePath should always return an absolute path. 1497 llvm::sys::fs::make_absolute(FilePath); 1498 Filename = FilePath.c_str(); 1499 1500 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1501 Stream.EmitRecordWithBlob(SLocFileAbbrv, Record, Filename); 1502 1503 if (Content->BufferOverridden) { 1504 Record.clear(); 1505 Record.push_back(SM_SLOC_BUFFER_BLOB); 1506 const llvm::MemoryBuffer *Buffer 1507 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager()); 1508 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, 1509 StringRef(Buffer->getBufferStart(), 1510 Buffer->getBufferSize() + 1)); 1511 } 1512 } else { 1513 // The source location entry is a buffer. The blob associated 1514 // with this entry contains the contents of the buffer. 1515 1516 // We add one to the size so that we capture the trailing NULL 1517 // that is required by llvm::MemoryBuffer::getMemBuffer (on 1518 // the reader side). 1519 const llvm::MemoryBuffer *Buffer 1520 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager()); 1521 const char *Name = Buffer->getBufferIdentifier(); 1522 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record, 1523 StringRef(Name, strlen(Name) + 1)); 1524 Record.clear(); 1525 Record.push_back(SM_SLOC_BUFFER_BLOB); 1526 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, 1527 StringRef(Buffer->getBufferStart(), 1528 Buffer->getBufferSize() + 1)); 1529 1530 if (strcmp(Name, "<built-in>") == 0) { 1531 PreloadSLocs.push_back(SLocEntryOffsets.size()); 1532 } 1533 } 1534 } else { 1535 // The source location entry is a macro expansion. 1536 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion(); 1537 Record.push_back(Expansion.getSpellingLoc().getRawEncoding()); 1538 Record.push_back(Expansion.getExpansionLocStart().getRawEncoding()); 1539 Record.push_back(Expansion.isMacroArgExpansion() ? 0 1540 : Expansion.getExpansionLocEnd().getRawEncoding()); 1541 1542 // Compute the token length for this macro expansion. 1543 unsigned NextOffset = SourceMgr.getNextLocalOffset(); 1544 if (I + 1 != N) 1545 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset(); 1546 Record.push_back(NextOffset - SLoc->getOffset() - 1); 1547 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record); 1548 } 1549 } 1550 1551 Stream.ExitBlock(); 1552 1553 if (SLocEntryOffsets.empty()) 1554 return; 1555 1556 // Write the source-location offsets table into the AST block. This 1557 // table is used for lazily loading source-location information. 1558 using namespace llvm; 1559 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1560 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS)); 1561 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs 1562 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size 1563 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets 1564 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(Abbrev); 1565 1566 Record.clear(); 1567 Record.push_back(SOURCE_LOCATION_OFFSETS); 1568 Record.push_back(SLocEntryOffsets.size()); 1569 Record.push_back(SourceMgr.getNextLocalOffset() - 1); // skip dummy 1570 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record, data(SLocEntryOffsets)); 1571 1572 Abbrev = new BitCodeAbbrev(); 1573 Abbrev->Add(BitCodeAbbrevOp(FILE_SOURCE_LOCATION_OFFSETS)); 1574 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs 1575 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets 1576 unsigned SLocFileOffsetsAbbrev = Stream.EmitAbbrev(Abbrev); 1577 1578 Record.clear(); 1579 Record.push_back(FILE_SOURCE_LOCATION_OFFSETS); 1580 Record.push_back(SLocFileEntryOffsets.size()); 1581 Stream.EmitRecordWithBlob(SLocFileOffsetsAbbrev, Record, 1582 data(SLocFileEntryOffsets)); 1583 1584 // Write the source location entry preloads array, telling the AST 1585 // reader which source locations entries it should load eagerly. 1586 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs); 1587 1588 // Write the line table. It depends on remapping working, so it must come 1589 // after the source location offsets. 1590 if (SourceMgr.hasLineTable()) { 1591 LineTableInfo &LineTable = SourceMgr.getLineTable(); 1592 1593 Record.clear(); 1594 // Emit the file names 1595 Record.push_back(LineTable.getNumFilenames()); 1596 for (unsigned I = 0, N = LineTable.getNumFilenames(); I != N; ++I) { 1597 // Emit the file name 1598 const char *Filename = LineTable.getFilename(I); 1599 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1600 unsigned FilenameLen = Filename? strlen(Filename) : 0; 1601 Record.push_back(FilenameLen); 1602 if (FilenameLen) 1603 Record.insert(Record.end(), Filename, Filename + FilenameLen); 1604 } 1605 1606 // Emit the line entries 1607 for (LineTableInfo::iterator L = LineTable.begin(), LEnd = LineTable.end(); 1608 L != LEnd; ++L) { 1609 // Only emit entries for local files. 1610 if (L->first.ID < 0) 1611 continue; 1612 1613 // Emit the file ID 1614 Record.push_back(L->first.ID); 1615 1616 // Emit the line entries 1617 Record.push_back(L->second.size()); 1618 for (std::vector<LineEntry>::iterator LE = L->second.begin(), 1619 LEEnd = L->second.end(); 1620 LE != LEEnd; ++LE) { 1621 Record.push_back(LE->FileOffset); 1622 Record.push_back(LE->LineNo); 1623 Record.push_back(LE->FilenameID); 1624 Record.push_back((unsigned)LE->FileKind); 1625 Record.push_back(LE->IncludeOffset); 1626 } 1627 } 1628 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record); 1629 } 1630 } 1631 1632 //===----------------------------------------------------------------------===// 1633 // Preprocessor Serialization 1634 //===----------------------------------------------------------------------===// 1635 1636 static int compareMacroDefinitions(const void *XPtr, const void *YPtr) { 1637 const std::pair<const IdentifierInfo *, MacroInfo *> &X = 1638 *(const std::pair<const IdentifierInfo *, MacroInfo *>*)XPtr; 1639 const std::pair<const IdentifierInfo *, MacroInfo *> &Y = 1640 *(const std::pair<const IdentifierInfo *, MacroInfo *>*)YPtr; 1641 return X.first->getName().compare(Y.first->getName()); 1642 } 1643 1644 /// \brief Writes the block containing the serialized form of the 1645 /// preprocessor. 1646 /// 1647 void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) { 1648 PreprocessingRecord *PPRec = PP.getPreprocessingRecord(); 1649 if (PPRec) 1650 WritePreprocessorDetail(*PPRec); 1651 1652 RecordData Record; 1653 1654 // If the preprocessor __COUNTER__ value has been bumped, remember it. 1655 if (PP.getCounterValue() != 0) { 1656 Record.push_back(PP.getCounterValue()); 1657 Stream.EmitRecord(PP_COUNTER_VALUE, Record); 1658 Record.clear(); 1659 } 1660 1661 // Enter the preprocessor block. 1662 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3); 1663 1664 // If the AST file contains __DATE__ or __TIME__ emit a warning about this. 1665 // FIXME: use diagnostics subsystem for localization etc. 1666 if (PP.SawDateOrTime()) 1667 fprintf(stderr, "warning: precompiled header used __DATE__ or __TIME__.\n"); 1668 1669 1670 // Loop over all the macro definitions that are live at the end of the file, 1671 // emitting each to the PP section. 1672 1673 // Construct the list of macro definitions that need to be serialized. 1674 SmallVector<std::pair<const IdentifierInfo *, MacroInfo *>, 2> 1675 MacrosToEmit; 1676 llvm::SmallPtrSet<const IdentifierInfo*, 4> MacroDefinitionsSeen; 1677 for (Preprocessor::macro_iterator I = PP.macro_begin(Chain == 0), 1678 E = PP.macro_end(Chain == 0); 1679 I != E; ++I) { 1680 // FIXME: We'll need to store macro history in PCH. 1681 if (I->first->hasMacroDefinition()) { 1682 if (!IsModule || I->second->isPublic()) { 1683 MacroDefinitionsSeen.insert(I->first); 1684 MacrosToEmit.push_back(std::make_pair(I->first, I->second)); 1685 } 1686 } 1687 } 1688 1689 // Sort the set of macro definitions that need to be serialized by the 1690 // name of the macro, to provide a stable ordering. 1691 llvm::array_pod_sort(MacrosToEmit.begin(), MacrosToEmit.end(), 1692 &compareMacroDefinitions); 1693 1694 // Resolve any identifiers that defined macros at the time they were 1695 // deserialized, adding them to the list of macros to emit (if appropriate). 1696 for (unsigned I = 0, N = DeserializedMacroNames.size(); I != N; ++I) { 1697 IdentifierInfo *Name 1698 = const_cast<IdentifierInfo *>(DeserializedMacroNames[I]); 1699 if (Name->hasMacroDefinition() && MacroDefinitionsSeen.insert(Name)) 1700 MacrosToEmit.push_back(std::make_pair(Name, PP.getMacroInfo(Name))); 1701 } 1702 1703 for (unsigned I = 0, N = MacrosToEmit.size(); I != N; ++I) { 1704 const IdentifierInfo *Name = MacrosToEmit[I].first; 1705 MacroInfo *MI = MacrosToEmit[I].second; 1706 if (!MI) 1707 continue; 1708 1709 // Don't emit builtin macros like __LINE__ to the AST file unless they have 1710 // been redefined by the header (in which case they are not isBuiltinMacro). 1711 // Also skip macros from a AST file if we're chaining. 1712 1713 // FIXME: There is a (probably minor) optimization we could do here, if 1714 // the macro comes from the original PCH but the identifier comes from a 1715 // chained PCH, by storing the offset into the original PCH rather than 1716 // writing the macro definition a second time. 1717 if (MI->isBuiltinMacro() || 1718 (Chain && 1719 Name->isFromAST() && !Name->hasChangedSinceDeserialization() && 1720 MI->isFromAST() && !MI->hasChangedAfterLoad())) 1721 continue; 1722 1723 AddIdentifierRef(Name, Record); 1724 MacroOffsets[Name] = Stream.GetCurrentBitNo(); 1725 Record.push_back(MI->getDefinitionLoc().getRawEncoding()); 1726 Record.push_back(MI->isUsed()); 1727 Record.push_back(MI->isPublic()); 1728 AddSourceLocation(MI->getVisibilityLocation(), Record); 1729 unsigned Code; 1730 if (MI->isObjectLike()) { 1731 Code = PP_MACRO_OBJECT_LIKE; 1732 } else { 1733 Code = PP_MACRO_FUNCTION_LIKE; 1734 1735 Record.push_back(MI->isC99Varargs()); 1736 Record.push_back(MI->isGNUVarargs()); 1737 Record.push_back(MI->getNumArgs()); 1738 for (MacroInfo::arg_iterator I = MI->arg_begin(), E = MI->arg_end(); 1739 I != E; ++I) 1740 AddIdentifierRef(*I, Record); 1741 } 1742 1743 // If we have a detailed preprocessing record, record the macro definition 1744 // ID that corresponds to this macro. 1745 if (PPRec) 1746 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]); 1747 1748 Stream.EmitRecord(Code, Record); 1749 Record.clear(); 1750 1751 // Emit the tokens array. 1752 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) { 1753 // Note that we know that the preprocessor does not have any annotation 1754 // tokens in it because they are created by the parser, and thus can't be 1755 // in a macro definition. 1756 const Token &Tok = MI->getReplacementToken(TokNo); 1757 1758 Record.push_back(Tok.getLocation().getRawEncoding()); 1759 Record.push_back(Tok.getLength()); 1760 1761 // FIXME: When reading literal tokens, reconstruct the literal pointer if 1762 // it is needed. 1763 AddIdentifierRef(Tok.getIdentifierInfo(), Record); 1764 // FIXME: Should translate token kind to a stable encoding. 1765 Record.push_back(Tok.getKind()); 1766 // FIXME: Should translate token flags to a stable encoding. 1767 Record.push_back(Tok.getFlags()); 1768 1769 Stream.EmitRecord(PP_TOKEN, Record); 1770 Record.clear(); 1771 } 1772 ++NumMacros; 1773 } 1774 Stream.ExitBlock(); 1775 } 1776 1777 void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) { 1778 if (PPRec.local_begin() == PPRec.local_end()) 1779 return; 1780 1781 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets; 1782 1783 // Enter the preprocessor block. 1784 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3); 1785 1786 // If the preprocessor has a preprocessing record, emit it. 1787 unsigned NumPreprocessingRecords = 0; 1788 using namespace llvm; 1789 1790 // Set up the abbreviation for 1791 unsigned InclusionAbbrev = 0; 1792 { 1793 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1794 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE)); 1795 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length 1796 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes 1797 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind 1798 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1799 InclusionAbbrev = Stream.EmitAbbrev(Abbrev); 1800 } 1801 1802 unsigned FirstPreprocessorEntityID 1803 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0) 1804 + NUM_PREDEF_PP_ENTITY_IDS; 1805 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID; 1806 RecordData Record; 1807 for (PreprocessingRecord::iterator E = PPRec.local_begin(), 1808 EEnd = PPRec.local_end(); 1809 E != EEnd; 1810 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) { 1811 Record.clear(); 1812 1813 PreprocessedEntityOffsets.push_back(PPEntityOffset((*E)->getSourceRange(), 1814 Stream.GetCurrentBitNo())); 1815 1816 if (MacroDefinition *MD = dyn_cast<MacroDefinition>(*E)) { 1817 // Record this macro definition's ID. 1818 MacroDefinitions[MD] = NextPreprocessorEntityID; 1819 1820 AddIdentifierRef(MD->getName(), Record); 1821 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record); 1822 continue; 1823 } 1824 1825 if (MacroExpansion *ME = dyn_cast<MacroExpansion>(*E)) { 1826 Record.push_back(ME->isBuiltinMacro()); 1827 if (ME->isBuiltinMacro()) 1828 AddIdentifierRef(ME->getName(), Record); 1829 else 1830 Record.push_back(MacroDefinitions[ME->getDefinition()]); 1831 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record); 1832 continue; 1833 } 1834 1835 if (InclusionDirective *ID = dyn_cast<InclusionDirective>(*E)) { 1836 Record.push_back(PPD_INCLUSION_DIRECTIVE); 1837 Record.push_back(ID->getFileName().size()); 1838 Record.push_back(ID->wasInQuotes()); 1839 Record.push_back(static_cast<unsigned>(ID->getKind())); 1840 SmallString<64> Buffer; 1841 Buffer += ID->getFileName(); 1842 // Check that the FileEntry is not null because it was not resolved and 1843 // we create a PCH even with compiler errors. 1844 if (ID->getFile()) 1845 Buffer += ID->getFile()->getName(); 1846 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer); 1847 continue; 1848 } 1849 1850 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter"); 1851 } 1852 Stream.ExitBlock(); 1853 1854 // Write the offsets table for the preprocessing record. 1855 if (NumPreprocessingRecords > 0) { 1856 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords); 1857 1858 // Write the offsets table for identifier IDs. 1859 using namespace llvm; 1860 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1861 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS)); 1862 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity 1863 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1864 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 1865 1866 Record.clear(); 1867 Record.push_back(PPD_ENTITIES_OFFSETS); 1868 Record.push_back(FirstPreprocessorEntityID - NUM_PREDEF_PP_ENTITY_IDS); 1869 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record, 1870 data(PreprocessedEntityOffsets)); 1871 } 1872 } 1873 1874 unsigned ASTWriter::getSubmoduleID(Module *Mod) { 1875 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod); 1876 if (Known != SubmoduleIDs.end()) 1877 return Known->second; 1878 1879 return SubmoduleIDs[Mod] = NextSubmoduleID++; 1880 } 1881 1882 /// \brief Compute the number of modules within the given tree (including the 1883 /// given module). 1884 static unsigned getNumberOfModules(Module *Mod) { 1885 unsigned ChildModules = 0; 1886 for (Module::submodule_iterator Sub = Mod->submodule_begin(), 1887 SubEnd = Mod->submodule_end(); 1888 Sub != SubEnd; ++Sub) 1889 ChildModules += getNumberOfModules(*Sub); 1890 1891 return ChildModules + 1; 1892 } 1893 1894 void ASTWriter::WriteSubmodules(Module *WritingModule) { 1895 // Determine the dependencies of our module and each of it's submodules. 1896 // FIXME: This feels like it belongs somewhere else, but there are no 1897 // other consumers of this information. 1898 SourceManager &SrcMgr = PP->getSourceManager(); 1899 ModuleMap &ModMap = PP->getHeaderSearchInfo().getModuleMap(); 1900 for (ASTContext::import_iterator I = Context->local_import_begin(), 1901 IEnd = Context->local_import_end(); 1902 I != IEnd; ++I) { 1903 if (Module *ImportedFrom 1904 = ModMap.inferModuleFromLocation(FullSourceLoc(I->getLocation(), 1905 SrcMgr))) { 1906 ImportedFrom->Imports.push_back(I->getImportedModule()); 1907 } 1908 } 1909 1910 // Enter the submodule description block. 1911 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 1912 1913 // Write the abbreviations needed for the submodules block. 1914 using namespace llvm; 1915 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1916 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION)); 1917 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID 1918 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent 1919 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework 1920 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit 1921 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem 1922 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules... 1923 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit... 1924 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild... 1925 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name 1926 unsigned DefinitionAbbrev = Stream.EmitAbbrev(Abbrev); 1927 1928 Abbrev = new BitCodeAbbrev(); 1929 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER)); 1930 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name 1931 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(Abbrev); 1932 1933 Abbrev = new BitCodeAbbrev(); 1934 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER)); 1935 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name 1936 unsigned HeaderAbbrev = Stream.EmitAbbrev(Abbrev); 1937 1938 Abbrev = new BitCodeAbbrev(); 1939 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR)); 1940 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name 1941 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(Abbrev); 1942 1943 Abbrev = new BitCodeAbbrev(); 1944 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES)); 1945 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature 1946 unsigned RequiresAbbrev = Stream.EmitAbbrev(Abbrev); 1947 1948 // Write the submodule metadata block. 1949 RecordData Record; 1950 Record.push_back(getNumberOfModules(WritingModule)); 1951 Record.push_back(FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS); 1952 Stream.EmitRecord(SUBMODULE_METADATA, Record); 1953 1954 // Write all of the submodules. 1955 std::queue<Module *> Q; 1956 Q.push(WritingModule); 1957 while (!Q.empty()) { 1958 Module *Mod = Q.front(); 1959 Q.pop(); 1960 unsigned ID = getSubmoduleID(Mod); 1961 1962 // Emit the definition of the block. 1963 Record.clear(); 1964 Record.push_back(SUBMODULE_DEFINITION); 1965 Record.push_back(ID); 1966 if (Mod->Parent) { 1967 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?"); 1968 Record.push_back(SubmoduleIDs[Mod->Parent]); 1969 } else { 1970 Record.push_back(0); 1971 } 1972 Record.push_back(Mod->IsFramework); 1973 Record.push_back(Mod->IsExplicit); 1974 Record.push_back(Mod->IsSystem); 1975 Record.push_back(Mod->InferSubmodules); 1976 Record.push_back(Mod->InferExplicitSubmodules); 1977 Record.push_back(Mod->InferExportWildcard); 1978 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name); 1979 1980 // Emit the requirements. 1981 for (unsigned I = 0, N = Mod->Requires.size(); I != N; ++I) { 1982 Record.clear(); 1983 Record.push_back(SUBMODULE_REQUIRES); 1984 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, 1985 Mod->Requires[I].data(), 1986 Mod->Requires[I].size()); 1987 } 1988 1989 // Emit the umbrella header, if there is one. 1990 if (const FileEntry *UmbrellaHeader = Mod->getUmbrellaHeader()) { 1991 Record.clear(); 1992 Record.push_back(SUBMODULE_UMBRELLA_HEADER); 1993 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record, 1994 UmbrellaHeader->getName()); 1995 } else if (const DirectoryEntry *UmbrellaDir = Mod->getUmbrellaDir()) { 1996 Record.clear(); 1997 Record.push_back(SUBMODULE_UMBRELLA_DIR); 1998 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record, 1999 UmbrellaDir->getName()); 2000 } 2001 2002 // Emit the headers. 2003 for (unsigned I = 0, N = Mod->Headers.size(); I != N; ++I) { 2004 Record.clear(); 2005 Record.push_back(SUBMODULE_HEADER); 2006 Stream.EmitRecordWithBlob(HeaderAbbrev, Record, 2007 Mod->Headers[I]->getName()); 2008 } 2009 2010 // Emit the imports. 2011 if (!Mod->Imports.empty()) { 2012 Record.clear(); 2013 for (unsigned I = 0, N = Mod->Imports.size(); I != N; ++I) { 2014 unsigned ImportedID = getSubmoduleID(Mod->Imports[I]); 2015 assert(ImportedID && "Unknown submodule!"); 2016 Record.push_back(ImportedID); 2017 } 2018 Stream.EmitRecord(SUBMODULE_IMPORTS, Record); 2019 } 2020 2021 // Emit the exports. 2022 if (!Mod->Exports.empty()) { 2023 Record.clear(); 2024 for (unsigned I = 0, N = Mod->Exports.size(); I != N; ++I) { 2025 if (Module *Exported = Mod->Exports[I].getPointer()) { 2026 unsigned ExportedID = SubmoduleIDs[Exported]; 2027 assert(ExportedID > 0 && "Unknown submodule ID?"); 2028 Record.push_back(ExportedID); 2029 } else { 2030 Record.push_back(0); 2031 } 2032 2033 Record.push_back(Mod->Exports[I].getInt()); 2034 } 2035 Stream.EmitRecord(SUBMODULE_EXPORTS, Record); 2036 } 2037 2038 // Queue up the submodules of this module. 2039 for (Module::submodule_iterator Sub = Mod->submodule_begin(), 2040 SubEnd = Mod->submodule_end(); 2041 Sub != SubEnd; ++Sub) 2042 Q.push(*Sub); 2043 } 2044 2045 Stream.ExitBlock(); 2046 2047 assert((NextSubmoduleID - FirstSubmoduleID 2048 == getNumberOfModules(WritingModule)) && "Wrong # of submodules"); 2049 } 2050 2051 serialization::SubmoduleID 2052 ASTWriter::inferSubmoduleIDFromLocation(SourceLocation Loc) { 2053 if (Loc.isInvalid() || !WritingModule) 2054 return 0; // No submodule 2055 2056 // Find the module that owns this location. 2057 ModuleMap &ModMap = PP->getHeaderSearchInfo().getModuleMap(); 2058 Module *OwningMod 2059 = ModMap.inferModuleFromLocation(FullSourceLoc(Loc,PP->getSourceManager())); 2060 if (!OwningMod) 2061 return 0; 2062 2063 // Check whether this submodule is part of our own module. 2064 if (WritingModule != OwningMod && !OwningMod->isSubModuleOf(WritingModule)) 2065 return 0; 2066 2067 return getSubmoduleID(OwningMod); 2068 } 2069 2070 void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag) { 2071 RecordData Record; 2072 for (DiagnosticsEngine::DiagStatePointsTy::const_iterator 2073 I = Diag.DiagStatePoints.begin(), E = Diag.DiagStatePoints.end(); 2074 I != E; ++I) { 2075 const DiagnosticsEngine::DiagStatePoint &point = *I; 2076 if (point.Loc.isInvalid()) 2077 continue; 2078 2079 Record.push_back(point.Loc.getRawEncoding()); 2080 for (DiagnosticsEngine::DiagState::const_iterator 2081 I = point.State->begin(), E = point.State->end(); I != E; ++I) { 2082 if (I->second.isPragma()) { 2083 Record.push_back(I->first); 2084 Record.push_back(I->second.getMapping()); 2085 } 2086 } 2087 Record.push_back(-1); // mark the end of the diag/map pairs for this 2088 // location. 2089 } 2090 2091 if (!Record.empty()) 2092 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record); 2093 } 2094 2095 void ASTWriter::WriteCXXBaseSpecifiersOffsets() { 2096 if (CXXBaseSpecifiersOffsets.empty()) 2097 return; 2098 2099 RecordData Record; 2100 2101 // Create a blob abbreviation for the C++ base specifiers offsets. 2102 using namespace llvm; 2103 2104 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2105 Abbrev->Add(BitCodeAbbrevOp(CXX_BASE_SPECIFIER_OFFSETS)); 2106 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size 2107 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2108 unsigned BaseSpecifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2109 2110 // Write the base specifier offsets table. 2111 Record.clear(); 2112 Record.push_back(CXX_BASE_SPECIFIER_OFFSETS); 2113 Record.push_back(CXXBaseSpecifiersOffsets.size()); 2114 Stream.EmitRecordWithBlob(BaseSpecifierOffsetAbbrev, Record, 2115 data(CXXBaseSpecifiersOffsets)); 2116 } 2117 2118 //===----------------------------------------------------------------------===// 2119 // Type Serialization 2120 //===----------------------------------------------------------------------===// 2121 2122 /// \brief Write the representation of a type to the AST stream. 2123 void ASTWriter::WriteType(QualType T) { 2124 TypeIdx &Idx = TypeIdxs[T]; 2125 if (Idx.getIndex() == 0) // we haven't seen this type before. 2126 Idx = TypeIdx(NextTypeID++); 2127 2128 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST"); 2129 2130 // Record the offset for this type. 2131 unsigned Index = Idx.getIndex() - FirstTypeID; 2132 if (TypeOffsets.size() == Index) 2133 TypeOffsets.push_back(Stream.GetCurrentBitNo()); 2134 else if (TypeOffsets.size() < Index) { 2135 TypeOffsets.resize(Index + 1); 2136 TypeOffsets[Index] = Stream.GetCurrentBitNo(); 2137 } 2138 2139 RecordData Record; 2140 2141 // Emit the type's representation. 2142 ASTTypeWriter W(*this, Record); 2143 2144 if (T.hasLocalNonFastQualifiers()) { 2145 Qualifiers Qs = T.getLocalQualifiers(); 2146 AddTypeRef(T.getLocalUnqualifiedType(), Record); 2147 Record.push_back(Qs.getAsOpaqueValue()); 2148 W.Code = TYPE_EXT_QUAL; 2149 } else { 2150 switch (T->getTypeClass()) { 2151 // For all of the concrete, non-dependent types, call the 2152 // appropriate visitor function. 2153 #define TYPE(Class, Base) \ 2154 case Type::Class: W.Visit##Class##Type(cast<Class##Type>(T)); break; 2155 #define ABSTRACT_TYPE(Class, Base) 2156 #include "clang/AST/TypeNodes.def" 2157 } 2158 } 2159 2160 // Emit the serialized record. 2161 Stream.EmitRecord(W.Code, Record); 2162 2163 // Flush any expressions that were written as part of this type. 2164 FlushStmts(); 2165 } 2166 2167 //===----------------------------------------------------------------------===// 2168 // Declaration Serialization 2169 //===----------------------------------------------------------------------===// 2170 2171 /// \brief Write the block containing all of the declaration IDs 2172 /// lexically declared within the given DeclContext. 2173 /// 2174 /// \returns the offset of the DECL_CONTEXT_LEXICAL block within the 2175 /// bistream, or 0 if no block was written. 2176 uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context, 2177 DeclContext *DC) { 2178 if (DC->decls_empty()) 2179 return 0; 2180 2181 uint64_t Offset = Stream.GetCurrentBitNo(); 2182 RecordData Record; 2183 Record.push_back(DECL_CONTEXT_LEXICAL); 2184 SmallVector<KindDeclIDPair, 64> Decls; 2185 for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end(); 2186 D != DEnd; ++D) 2187 Decls.push_back(std::make_pair((*D)->getKind(), GetDeclRef(*D))); 2188 2189 ++NumLexicalDeclContexts; 2190 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record, data(Decls)); 2191 return Offset; 2192 } 2193 2194 void ASTWriter::WriteTypeDeclOffsets() { 2195 using namespace llvm; 2196 RecordData Record; 2197 2198 // Write the type offsets array 2199 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2200 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET)); 2201 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types 2202 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index 2203 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block 2204 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2205 Record.clear(); 2206 Record.push_back(TYPE_OFFSET); 2207 Record.push_back(TypeOffsets.size()); 2208 Record.push_back(FirstTypeID - NUM_PREDEF_TYPE_IDS); 2209 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, data(TypeOffsets)); 2210 2211 // Write the declaration offsets array 2212 Abbrev = new BitCodeAbbrev(); 2213 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET)); 2214 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations 2215 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID 2216 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block 2217 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2218 Record.clear(); 2219 Record.push_back(DECL_OFFSET); 2220 Record.push_back(DeclOffsets.size()); 2221 Record.push_back(FirstDeclID - NUM_PREDEF_DECL_IDS); 2222 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, data(DeclOffsets)); 2223 } 2224 2225 void ASTWriter::WriteFileDeclIDsMap() { 2226 using namespace llvm; 2227 RecordData Record; 2228 2229 // Join the vectors of DeclIDs from all files. 2230 SmallVector<DeclID, 256> FileSortedIDs; 2231 for (FileDeclIDsTy::iterator 2232 FI = FileDeclIDs.begin(), FE = FileDeclIDs.end(); FI != FE; ++FI) { 2233 DeclIDInFileInfo &Info = *FI->second; 2234 Info.FirstDeclIndex = FileSortedIDs.size(); 2235 for (LocDeclIDsTy::iterator 2236 DI = Info.DeclIDs.begin(), DE = Info.DeclIDs.end(); DI != DE; ++DI) 2237 FileSortedIDs.push_back(DI->second); 2238 } 2239 2240 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2241 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS)); 2242 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2243 unsigned AbbrevCode = Stream.EmitAbbrev(Abbrev); 2244 Record.push_back(FILE_SORTED_DECLS); 2245 Stream.EmitRecordWithBlob(AbbrevCode, Record, data(FileSortedIDs)); 2246 } 2247 2248 void ASTWriter::WriteComments() { 2249 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3); 2250 ArrayRef<RawComment *> RawComments = Context->Comments.getComments(); 2251 RecordData Record; 2252 for (ArrayRef<RawComment *>::iterator I = RawComments.begin(), 2253 E = RawComments.end(); 2254 I != E; ++I) { 2255 Record.clear(); 2256 AddSourceRange((*I)->getSourceRange(), Record); 2257 Record.push_back((*I)->getKind()); 2258 Record.push_back((*I)->isTrailingComment()); 2259 Record.push_back((*I)->isAlmostTrailingComment()); 2260 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record); 2261 } 2262 Stream.ExitBlock(); 2263 } 2264 2265 //===----------------------------------------------------------------------===// 2266 // Global Method Pool and Selector Serialization 2267 //===----------------------------------------------------------------------===// 2268 2269 namespace { 2270 // Trait used for the on-disk hash table used in the method pool. 2271 class ASTMethodPoolTrait { 2272 ASTWriter &Writer; 2273 2274 public: 2275 typedef Selector key_type; 2276 typedef key_type key_type_ref; 2277 2278 struct data_type { 2279 SelectorID ID; 2280 ObjCMethodList Instance, Factory; 2281 }; 2282 typedef const data_type& data_type_ref; 2283 2284 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) { } 2285 2286 static unsigned ComputeHash(Selector Sel) { 2287 return serialization::ComputeHash(Sel); 2288 } 2289 2290 std::pair<unsigned,unsigned> 2291 EmitKeyDataLength(raw_ostream& Out, Selector Sel, 2292 data_type_ref Methods) { 2293 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4); 2294 clang::io::Emit16(Out, KeyLen); 2295 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts 2296 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2297 Method = Method->Next) 2298 if (Method->Method) 2299 DataLen += 4; 2300 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2301 Method = Method->Next) 2302 if (Method->Method) 2303 DataLen += 4; 2304 clang::io::Emit16(Out, DataLen); 2305 return std::make_pair(KeyLen, DataLen); 2306 } 2307 2308 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) { 2309 uint64_t Start = Out.tell(); 2310 assert((Start >> 32) == 0 && "Selector key offset too large"); 2311 Writer.SetSelectorOffset(Sel, Start); 2312 unsigned N = Sel.getNumArgs(); 2313 clang::io::Emit16(Out, N); 2314 if (N == 0) 2315 N = 1; 2316 for (unsigned I = 0; I != N; ++I) 2317 clang::io::Emit32(Out, 2318 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I))); 2319 } 2320 2321 void EmitData(raw_ostream& Out, key_type_ref, 2322 data_type_ref Methods, unsigned DataLen) { 2323 uint64_t Start = Out.tell(); (void)Start; 2324 clang::io::Emit32(Out, Methods.ID); 2325 unsigned NumInstanceMethods = 0; 2326 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2327 Method = Method->Next) 2328 if (Method->Method) 2329 ++NumInstanceMethods; 2330 2331 unsigned NumFactoryMethods = 0; 2332 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2333 Method = Method->Next) 2334 if (Method->Method) 2335 ++NumFactoryMethods; 2336 2337 clang::io::Emit16(Out, NumInstanceMethods); 2338 clang::io::Emit16(Out, NumFactoryMethods); 2339 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2340 Method = Method->Next) 2341 if (Method->Method) 2342 clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); 2343 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2344 Method = Method->Next) 2345 if (Method->Method) 2346 clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); 2347 2348 assert(Out.tell() - Start == DataLen && "Data length is wrong"); 2349 } 2350 }; 2351 } // end anonymous namespace 2352 2353 /// \brief Write ObjC data: selectors and the method pool. 2354 /// 2355 /// The method pool contains both instance and factory methods, stored 2356 /// in an on-disk hash table indexed by the selector. The hash table also 2357 /// contains an empty entry for every other selector known to Sema. 2358 void ASTWriter::WriteSelectors(Sema &SemaRef) { 2359 using namespace llvm; 2360 2361 // Do we have to do anything at all? 2362 if (SemaRef.MethodPool.empty() && SelectorIDs.empty()) 2363 return; 2364 unsigned NumTableEntries = 0; 2365 // Create and write out the blob that contains selectors and the method pool. 2366 { 2367 OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator; 2368 ASTMethodPoolTrait Trait(*this); 2369 2370 // Create the on-disk hash table representation. We walk through every 2371 // selector we've seen and look it up in the method pool. 2372 SelectorOffsets.resize(NextSelectorID - FirstSelectorID); 2373 for (llvm::DenseMap<Selector, SelectorID>::iterator 2374 I = SelectorIDs.begin(), E = SelectorIDs.end(); 2375 I != E; ++I) { 2376 Selector S = I->first; 2377 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S); 2378 ASTMethodPoolTrait::data_type Data = { 2379 I->second, 2380 ObjCMethodList(), 2381 ObjCMethodList() 2382 }; 2383 if (F != SemaRef.MethodPool.end()) { 2384 Data.Instance = F->second.first; 2385 Data.Factory = F->second.second; 2386 } 2387 // Only write this selector if it's not in an existing AST or something 2388 // changed. 2389 if (Chain && I->second < FirstSelectorID) { 2390 // Selector already exists. Did it change? 2391 bool changed = false; 2392 for (ObjCMethodList *M = &Data.Instance; !changed && M && M->Method; 2393 M = M->Next) { 2394 if (!M->Method->isFromASTFile()) 2395 changed = true; 2396 } 2397 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->Method; 2398 M = M->Next) { 2399 if (!M->Method->isFromASTFile()) 2400 changed = true; 2401 } 2402 if (!changed) 2403 continue; 2404 } else if (Data.Instance.Method || Data.Factory.Method) { 2405 // A new method pool entry. 2406 ++NumTableEntries; 2407 } 2408 Generator.insert(S, Data, Trait); 2409 } 2410 2411 // Create the on-disk hash table in a buffer. 2412 SmallString<4096> MethodPool; 2413 uint32_t BucketOffset; 2414 { 2415 ASTMethodPoolTrait Trait(*this); 2416 llvm::raw_svector_ostream Out(MethodPool); 2417 // Make sure that no bucket is at offset 0 2418 clang::io::Emit32(Out, 0); 2419 BucketOffset = Generator.Emit(Out, Trait); 2420 } 2421 2422 // Create a blob abbreviation 2423 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2424 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL)); 2425 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2426 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2427 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2428 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(Abbrev); 2429 2430 // Write the method pool 2431 RecordData Record; 2432 Record.push_back(METHOD_POOL); 2433 Record.push_back(BucketOffset); 2434 Record.push_back(NumTableEntries); 2435 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool.str()); 2436 2437 // Create a blob abbreviation for the selector table offsets. 2438 Abbrev = new BitCodeAbbrev(); 2439 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS)); 2440 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size 2441 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID 2442 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2443 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2444 2445 // Write the selector offsets table. 2446 Record.clear(); 2447 Record.push_back(SELECTOR_OFFSETS); 2448 Record.push_back(SelectorOffsets.size()); 2449 Record.push_back(FirstSelectorID - NUM_PREDEF_SELECTOR_IDS); 2450 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record, 2451 data(SelectorOffsets)); 2452 } 2453 } 2454 2455 /// \brief Write the selectors referenced in @selector expression into AST file. 2456 void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) { 2457 using namespace llvm; 2458 if (SemaRef.ReferencedSelectors.empty()) 2459 return; 2460 2461 RecordData Record; 2462 2463 // Note: this writes out all references even for a dependent AST. But it is 2464 // very tricky to fix, and given that @selector shouldn't really appear in 2465 // headers, probably not worth it. It's not a correctness issue. 2466 for (DenseMap<Selector, SourceLocation>::iterator S = 2467 SemaRef.ReferencedSelectors.begin(), 2468 E = SemaRef.ReferencedSelectors.end(); S != E; ++S) { 2469 Selector Sel = (*S).first; 2470 SourceLocation Loc = (*S).second; 2471 AddSelectorRef(Sel, Record); 2472 AddSourceLocation(Loc, Record); 2473 } 2474 Stream.EmitRecord(REFERENCED_SELECTOR_POOL, Record); 2475 } 2476 2477 //===----------------------------------------------------------------------===// 2478 // Identifier Table Serialization 2479 //===----------------------------------------------------------------------===// 2480 2481 namespace { 2482 class ASTIdentifierTableTrait { 2483 ASTWriter &Writer; 2484 Preprocessor &PP; 2485 IdentifierResolver &IdResolver; 2486 bool IsModule; 2487 2488 /// \brief Determines whether this is an "interesting" identifier 2489 /// that needs a full IdentifierInfo structure written into the hash 2490 /// table. 2491 bool isInterestingIdentifier(IdentifierInfo *II, MacroInfo *&Macro) { 2492 if (II->isPoisoned() || 2493 II->isExtensionToken() || 2494 II->getObjCOrBuiltinID() || 2495 II->hasRevertedTokenIDToIdentifier() || 2496 II->getFETokenInfo<void>()) 2497 return true; 2498 2499 return hasMacroDefinition(II, Macro); 2500 } 2501 2502 bool hasMacroDefinition(IdentifierInfo *II, MacroInfo *&Macro) { 2503 if (!II->hasMacroDefinition()) 2504 return false; 2505 2506 if (Macro || (Macro = PP.getMacroInfo(II))) 2507 return !Macro->isBuiltinMacro() && (!IsModule || Macro->isPublic()); 2508 2509 return false; 2510 } 2511 2512 public: 2513 typedef IdentifierInfo* key_type; 2514 typedef key_type key_type_ref; 2515 2516 typedef IdentID data_type; 2517 typedef data_type data_type_ref; 2518 2519 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP, 2520 IdentifierResolver &IdResolver, bool IsModule) 2521 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule) { } 2522 2523 static unsigned ComputeHash(const IdentifierInfo* II) { 2524 return llvm::HashString(II->getName()); 2525 } 2526 2527 std::pair<unsigned,unsigned> 2528 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) { 2529 unsigned KeyLen = II->getLength() + 1; 2530 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1 2531 MacroInfo *Macro = 0; 2532 if (isInterestingIdentifier(II, Macro)) { 2533 DataLen += 2; // 2 bytes for builtin ID, flags 2534 if (hasMacroDefinition(II, Macro)) 2535 DataLen += 8; 2536 2537 for (IdentifierResolver::iterator D = IdResolver.begin(II), 2538 DEnd = IdResolver.end(); 2539 D != DEnd; ++D) 2540 DataLen += sizeof(DeclID); 2541 } 2542 clang::io::Emit16(Out, DataLen); 2543 // We emit the key length after the data length so that every 2544 // string is preceded by a 16-bit length. This matches the PTH 2545 // format for storing identifiers. 2546 clang::io::Emit16(Out, KeyLen); 2547 return std::make_pair(KeyLen, DataLen); 2548 } 2549 2550 void EmitKey(raw_ostream& Out, const IdentifierInfo* II, 2551 unsigned KeyLen) { 2552 // Record the location of the key data. This is used when generating 2553 // the mapping from persistent IDs to strings. 2554 Writer.SetIdentifierOffset(II, Out.tell()); 2555 Out.write(II->getNameStart(), KeyLen); 2556 } 2557 2558 void EmitData(raw_ostream& Out, IdentifierInfo* II, 2559 IdentID ID, unsigned) { 2560 MacroInfo *Macro = 0; 2561 if (!isInterestingIdentifier(II, Macro)) { 2562 clang::io::Emit32(Out, ID << 1); 2563 return; 2564 } 2565 2566 clang::io::Emit32(Out, (ID << 1) | 0x01); 2567 uint32_t Bits = 0; 2568 bool HasMacroDefinition = hasMacroDefinition(II, Macro); 2569 Bits = (uint32_t)II->getObjCOrBuiltinID(); 2570 assert((Bits & 0x7ff) == Bits && "ObjCOrBuiltinID too big for ASTReader."); 2571 Bits = (Bits << 1) | unsigned(HasMacroDefinition); 2572 Bits = (Bits << 1) | unsigned(II->isExtensionToken()); 2573 Bits = (Bits << 1) | unsigned(II->isPoisoned()); 2574 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier()); 2575 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword()); 2576 clang::io::Emit16(Out, Bits); 2577 2578 if (HasMacroDefinition) { 2579 clang::io::Emit32(Out, Writer.getMacroOffset(II)); 2580 clang::io::Emit32(Out, 2581 Writer.inferSubmoduleIDFromLocation(Macro->getDefinitionLoc())); 2582 } 2583 2584 // Emit the declaration IDs in reverse order, because the 2585 // IdentifierResolver provides the declarations as they would be 2586 // visible (e.g., the function "stat" would come before the struct 2587 // "stat"), but the ASTReader adds declarations to the end of the list 2588 // (so we need to see the struct "status" before the function "status"). 2589 // Only emit declarations that aren't from a chained PCH, though. 2590 SmallVector<Decl *, 16> Decls(IdResolver.begin(II), 2591 IdResolver.end()); 2592 for (SmallVector<Decl *, 16>::reverse_iterator D = Decls.rbegin(), 2593 DEnd = Decls.rend(); 2594 D != DEnd; ++D) 2595 clang::io::Emit32(Out, Writer.getDeclID(*D)); 2596 } 2597 }; 2598 } // end anonymous namespace 2599 2600 /// \brief Write the identifier table into the AST file. 2601 /// 2602 /// The identifier table consists of a blob containing string data 2603 /// (the actual identifiers themselves) and a separate "offsets" index 2604 /// that maps identifier IDs to locations within the blob. 2605 void ASTWriter::WriteIdentifierTable(Preprocessor &PP, 2606 IdentifierResolver &IdResolver, 2607 bool IsModule) { 2608 using namespace llvm; 2609 2610 // Create and write out the blob that contains the identifier 2611 // strings. 2612 { 2613 OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator; 2614 ASTIdentifierTableTrait Trait(*this, PP, IdResolver, IsModule); 2615 2616 // Look for any identifiers that were named while processing the 2617 // headers, but are otherwise not needed. We add these to the hash 2618 // table to enable checking of the predefines buffer in the case 2619 // where the user adds new macro definitions when building the AST 2620 // file. 2621 for (IdentifierTable::iterator ID = PP.getIdentifierTable().begin(), 2622 IDEnd = PP.getIdentifierTable().end(); 2623 ID != IDEnd; ++ID) 2624 getIdentifierRef(ID->second); 2625 2626 // Create the on-disk hash table representation. We only store offsets 2627 // for identifiers that appear here for the first time. 2628 IdentifierOffsets.resize(NextIdentID - FirstIdentID); 2629 for (llvm::DenseMap<const IdentifierInfo *, IdentID>::iterator 2630 ID = IdentifierIDs.begin(), IDEnd = IdentifierIDs.end(); 2631 ID != IDEnd; ++ID) { 2632 assert(ID->first && "NULL identifier in identifier table"); 2633 if (!Chain || !ID->first->isFromAST() || 2634 ID->first->hasChangedSinceDeserialization()) 2635 Generator.insert(const_cast<IdentifierInfo *>(ID->first), ID->second, 2636 Trait); 2637 } 2638 2639 // Create the on-disk hash table in a buffer. 2640 SmallString<4096> IdentifierTable; 2641 uint32_t BucketOffset; 2642 { 2643 ASTIdentifierTableTrait Trait(*this, PP, IdResolver, IsModule); 2644 llvm::raw_svector_ostream Out(IdentifierTable); 2645 // Make sure that no bucket is at offset 0 2646 clang::io::Emit32(Out, 0); 2647 BucketOffset = Generator.Emit(Out, Trait); 2648 } 2649 2650 // Create a blob abbreviation 2651 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2652 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE)); 2653 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2654 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2655 unsigned IDTableAbbrev = Stream.EmitAbbrev(Abbrev); 2656 2657 // Write the identifier table 2658 RecordData Record; 2659 Record.push_back(IDENTIFIER_TABLE); 2660 Record.push_back(BucketOffset); 2661 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable.str()); 2662 } 2663 2664 // Write the offsets table for identifier IDs. 2665 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2666 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET)); 2667 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers 2668 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID 2669 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2670 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2671 2672 RecordData Record; 2673 Record.push_back(IDENTIFIER_OFFSET); 2674 Record.push_back(IdentifierOffsets.size()); 2675 Record.push_back(FirstIdentID - NUM_PREDEF_IDENT_IDS); 2676 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record, 2677 data(IdentifierOffsets)); 2678 } 2679 2680 //===----------------------------------------------------------------------===// 2681 // DeclContext's Name Lookup Table Serialization 2682 //===----------------------------------------------------------------------===// 2683 2684 namespace { 2685 // Trait used for the on-disk hash table used in the method pool. 2686 class ASTDeclContextNameLookupTrait { 2687 ASTWriter &Writer; 2688 2689 public: 2690 typedef DeclarationName key_type; 2691 typedef key_type key_type_ref; 2692 2693 typedef DeclContext::lookup_result data_type; 2694 typedef const data_type& data_type_ref; 2695 2696 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) { } 2697 2698 unsigned ComputeHash(DeclarationName Name) { 2699 llvm::FoldingSetNodeID ID; 2700 ID.AddInteger(Name.getNameKind()); 2701 2702 switch (Name.getNameKind()) { 2703 case DeclarationName::Identifier: 2704 ID.AddString(Name.getAsIdentifierInfo()->getName()); 2705 break; 2706 case DeclarationName::ObjCZeroArgSelector: 2707 case DeclarationName::ObjCOneArgSelector: 2708 case DeclarationName::ObjCMultiArgSelector: 2709 ID.AddInteger(serialization::ComputeHash(Name.getObjCSelector())); 2710 break; 2711 case DeclarationName::CXXConstructorName: 2712 case DeclarationName::CXXDestructorName: 2713 case DeclarationName::CXXConversionFunctionName: 2714 break; 2715 case DeclarationName::CXXOperatorName: 2716 ID.AddInteger(Name.getCXXOverloadedOperator()); 2717 break; 2718 case DeclarationName::CXXLiteralOperatorName: 2719 ID.AddString(Name.getCXXLiteralIdentifier()->getName()); 2720 case DeclarationName::CXXUsingDirective: 2721 break; 2722 } 2723 2724 return ID.ComputeHash(); 2725 } 2726 2727 std::pair<unsigned,unsigned> 2728 EmitKeyDataLength(raw_ostream& Out, DeclarationName Name, 2729 data_type_ref Lookup) { 2730 unsigned KeyLen = 1; 2731 switch (Name.getNameKind()) { 2732 case DeclarationName::Identifier: 2733 case DeclarationName::ObjCZeroArgSelector: 2734 case DeclarationName::ObjCOneArgSelector: 2735 case DeclarationName::ObjCMultiArgSelector: 2736 case DeclarationName::CXXLiteralOperatorName: 2737 KeyLen += 4; 2738 break; 2739 case DeclarationName::CXXOperatorName: 2740 KeyLen += 1; 2741 break; 2742 case DeclarationName::CXXConstructorName: 2743 case DeclarationName::CXXDestructorName: 2744 case DeclarationName::CXXConversionFunctionName: 2745 case DeclarationName::CXXUsingDirective: 2746 break; 2747 } 2748 clang::io::Emit16(Out, KeyLen); 2749 2750 // 2 bytes for num of decls and 4 for each DeclID. 2751 unsigned DataLen = 2 + 4 * (Lookup.second - Lookup.first); 2752 clang::io::Emit16(Out, DataLen); 2753 2754 return std::make_pair(KeyLen, DataLen); 2755 } 2756 2757 void EmitKey(raw_ostream& Out, DeclarationName Name, unsigned) { 2758 using namespace clang::io; 2759 2760 assert(Name.getNameKind() < 0x100 && "Invalid name kind ?"); 2761 Emit8(Out, Name.getNameKind()); 2762 switch (Name.getNameKind()) { 2763 case DeclarationName::Identifier: 2764 Emit32(Out, Writer.getIdentifierRef(Name.getAsIdentifierInfo())); 2765 break; 2766 case DeclarationName::ObjCZeroArgSelector: 2767 case DeclarationName::ObjCOneArgSelector: 2768 case DeclarationName::ObjCMultiArgSelector: 2769 Emit32(Out, Writer.getSelectorRef(Name.getObjCSelector())); 2770 break; 2771 case DeclarationName::CXXOperatorName: 2772 assert(Name.getCXXOverloadedOperator() < 0x100 && "Invalid operator ?"); 2773 Emit8(Out, Name.getCXXOverloadedOperator()); 2774 break; 2775 case DeclarationName::CXXLiteralOperatorName: 2776 Emit32(Out, Writer.getIdentifierRef(Name.getCXXLiteralIdentifier())); 2777 break; 2778 case DeclarationName::CXXConstructorName: 2779 case DeclarationName::CXXDestructorName: 2780 case DeclarationName::CXXConversionFunctionName: 2781 case DeclarationName::CXXUsingDirective: 2782 break; 2783 } 2784 } 2785 2786 void EmitData(raw_ostream& Out, key_type_ref, 2787 data_type Lookup, unsigned DataLen) { 2788 uint64_t Start = Out.tell(); (void)Start; 2789 clang::io::Emit16(Out, Lookup.second - Lookup.first); 2790 for (; Lookup.first != Lookup.second; ++Lookup.first) 2791 clang::io::Emit32(Out, Writer.GetDeclRef(*Lookup.first)); 2792 2793 assert(Out.tell() - Start == DataLen && "Data length is wrong"); 2794 } 2795 }; 2796 } // end anonymous namespace 2797 2798 /// \brief Write the block containing all of the declaration IDs 2799 /// visible from the given DeclContext. 2800 /// 2801 /// \returns the offset of the DECL_CONTEXT_VISIBLE block within the 2802 /// bitstream, or 0 if no block was written. 2803 uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context, 2804 DeclContext *DC) { 2805 if (DC->getPrimaryContext() != DC) 2806 return 0; 2807 2808 // Since there is no name lookup into functions or methods, don't bother to 2809 // build a visible-declarations table for these entities. 2810 if (DC->isFunctionOrMethod()) 2811 return 0; 2812 2813 // If not in C++, we perform name lookup for the translation unit via the 2814 // IdentifierInfo chains, don't bother to build a visible-declarations table. 2815 // FIXME: In C++ we need the visible declarations in order to "see" the 2816 // friend declarations, is there a way to do this without writing the table ? 2817 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus) 2818 return 0; 2819 2820 // Serialize the contents of the mapping used for lookup. Note that, 2821 // although we have two very different code paths, the serialized 2822 // representation is the same for both cases: a declaration name, 2823 // followed by a size, followed by references to the visible 2824 // declarations that have that name. 2825 uint64_t Offset = Stream.GetCurrentBitNo(); 2826 StoredDeclsMap *Map = DC->buildLookup(); 2827 if (!Map || Map->empty()) 2828 return 0; 2829 2830 OnDiskChainedHashTableGenerator<ASTDeclContextNameLookupTrait> Generator; 2831 ASTDeclContextNameLookupTrait Trait(*this); 2832 2833 // Create the on-disk hash table representation. 2834 DeclarationName ConversionName; 2835 llvm::SmallVector<NamedDecl *, 4> ConversionDecls; 2836 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 2837 D != DEnd; ++D) { 2838 DeclarationName Name = D->first; 2839 DeclContext::lookup_result Result = D->second.getLookupResult(); 2840 if (Result.first != Result.second) { 2841 if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { 2842 // Hash all conversion function names to the same name. The actual 2843 // type information in conversion function name is not used in the 2844 // key (since such type information is not stable across different 2845 // modules), so the intended effect is to coalesce all of the conversion 2846 // functions under a single key. 2847 if (!ConversionName) 2848 ConversionName = Name; 2849 ConversionDecls.append(Result.first, Result.second); 2850 continue; 2851 } 2852 2853 Generator.insert(Name, Result, Trait); 2854 } 2855 } 2856 2857 // Add the conversion functions 2858 if (!ConversionDecls.empty()) { 2859 Generator.insert(ConversionName, 2860 DeclContext::lookup_result(ConversionDecls.begin(), 2861 ConversionDecls.end()), 2862 Trait); 2863 } 2864 2865 // Create the on-disk hash table in a buffer. 2866 SmallString<4096> LookupTable; 2867 uint32_t BucketOffset; 2868 { 2869 llvm::raw_svector_ostream Out(LookupTable); 2870 // Make sure that no bucket is at offset 0 2871 clang::io::Emit32(Out, 0); 2872 BucketOffset = Generator.Emit(Out, Trait); 2873 } 2874 2875 // Write the lookup table 2876 RecordData Record; 2877 Record.push_back(DECL_CONTEXT_VISIBLE); 2878 Record.push_back(BucketOffset); 2879 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record, 2880 LookupTable.str()); 2881 2882 Stream.EmitRecord(DECL_CONTEXT_VISIBLE, Record); 2883 ++NumVisibleDeclContexts; 2884 return Offset; 2885 } 2886 2887 /// \brief Write an UPDATE_VISIBLE block for the given context. 2888 /// 2889 /// UPDATE_VISIBLE blocks contain the declarations that are added to an existing 2890 /// DeclContext in a dependent AST file. As such, they only exist for the TU 2891 /// (in C++), for namespaces, and for classes with forward-declared unscoped 2892 /// enumeration members (in C++11). 2893 void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) { 2894 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(DC->getLookupPtr()); 2895 if (!Map || Map->empty()) 2896 return; 2897 2898 OnDiskChainedHashTableGenerator<ASTDeclContextNameLookupTrait> Generator; 2899 ASTDeclContextNameLookupTrait Trait(*this); 2900 2901 // Create the hash table. 2902 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 2903 D != DEnd; ++D) { 2904 DeclarationName Name = D->first; 2905 DeclContext::lookup_result Result = D->second.getLookupResult(); 2906 // For any name that appears in this table, the results are complete, i.e. 2907 // they overwrite results from previous PCHs. Merging is always a mess. 2908 if (Result.first != Result.second) 2909 Generator.insert(Name, Result, Trait); 2910 } 2911 2912 // Create the on-disk hash table in a buffer. 2913 SmallString<4096> LookupTable; 2914 uint32_t BucketOffset; 2915 { 2916 llvm::raw_svector_ostream Out(LookupTable); 2917 // Make sure that no bucket is at offset 0 2918 clang::io::Emit32(Out, 0); 2919 BucketOffset = Generator.Emit(Out, Trait); 2920 } 2921 2922 // Write the lookup table 2923 RecordData Record; 2924 Record.push_back(UPDATE_VISIBLE); 2925 Record.push_back(getDeclID(cast<Decl>(DC))); 2926 Record.push_back(BucketOffset); 2927 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable.str()); 2928 } 2929 2930 /// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions. 2931 void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) { 2932 RecordData Record; 2933 Record.push_back(Opts.fp_contract); 2934 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record); 2935 } 2936 2937 /// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions. 2938 void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) { 2939 if (!SemaRef.Context.getLangOpts().OpenCL) 2940 return; 2941 2942 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions(); 2943 RecordData Record; 2944 #define OPENCLEXT(nm) Record.push_back(Opts.nm); 2945 #include "clang/Basic/OpenCLExtensions.def" 2946 Stream.EmitRecord(OPENCL_EXTENSIONS, Record); 2947 } 2948 2949 void ASTWriter::WriteRedeclarations() { 2950 RecordData LocalRedeclChains; 2951 SmallVector<serialization::LocalRedeclarationsInfo, 2> LocalRedeclsMap; 2952 2953 for (unsigned I = 0, N = Redeclarations.size(); I != N; ++I) { 2954 Decl *First = Redeclarations[I]; 2955 assert(First->getPreviousDecl() == 0 && "Not the first declaration?"); 2956 2957 Decl *MostRecent = First->getMostRecentDecl(); 2958 2959 // If we only have a single declaration, there is no point in storing 2960 // a redeclaration chain. 2961 if (First == MostRecent) 2962 continue; 2963 2964 unsigned Offset = LocalRedeclChains.size(); 2965 unsigned Size = 0; 2966 LocalRedeclChains.push_back(0); // Placeholder for the size. 2967 2968 // Collect the set of local redeclarations of this declaration. 2969 for (Decl *Prev = MostRecent; Prev != First; 2970 Prev = Prev->getPreviousDecl()) { 2971 if (!Prev->isFromASTFile()) { 2972 AddDeclRef(Prev, LocalRedeclChains); 2973 ++Size; 2974 } 2975 } 2976 LocalRedeclChains[Offset] = Size; 2977 2978 // Reverse the set of local redeclarations, so that we store them in 2979 // order (since we found them in reverse order). 2980 std::reverse(LocalRedeclChains.end() - Size, LocalRedeclChains.end()); 2981 2982 // Add the mapping from the first ID to the set of local declarations. 2983 LocalRedeclarationsInfo Info = { getDeclID(First), Offset }; 2984 LocalRedeclsMap.push_back(Info); 2985 2986 assert(N == Redeclarations.size() && 2987 "Deserialized a declaration we shouldn't have"); 2988 } 2989 2990 if (LocalRedeclChains.empty()) 2991 return; 2992 2993 // Sort the local redeclarations map by the first declaration ID, 2994 // since the reader will be performing binary searches on this information. 2995 llvm::array_pod_sort(LocalRedeclsMap.begin(), LocalRedeclsMap.end()); 2996 2997 // Emit the local redeclarations map. 2998 using namespace llvm; 2999 llvm::BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 3000 Abbrev->Add(BitCodeAbbrevOp(LOCAL_REDECLARATIONS_MAP)); 3001 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries 3002 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 3003 unsigned AbbrevID = Stream.EmitAbbrev(Abbrev); 3004 3005 RecordData Record; 3006 Record.push_back(LOCAL_REDECLARATIONS_MAP); 3007 Record.push_back(LocalRedeclsMap.size()); 3008 Stream.EmitRecordWithBlob(AbbrevID, Record, 3009 reinterpret_cast<char*>(LocalRedeclsMap.data()), 3010 LocalRedeclsMap.size() * sizeof(LocalRedeclarationsInfo)); 3011 3012 // Emit the redeclaration chains. 3013 Stream.EmitRecord(LOCAL_REDECLARATIONS, LocalRedeclChains); 3014 } 3015 3016 void ASTWriter::WriteObjCCategories() { 3017 llvm::SmallVector<ObjCCategoriesInfo, 2> CategoriesMap; 3018 RecordData Categories; 3019 3020 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) { 3021 unsigned Size = 0; 3022 unsigned StartIndex = Categories.size(); 3023 3024 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I]; 3025 3026 // Allocate space for the size. 3027 Categories.push_back(0); 3028 3029 // Add the categories. 3030 for (ObjCCategoryDecl *Cat = Class->getCategoryList(); 3031 Cat; Cat = Cat->getNextClassCategory(), ++Size) { 3032 assert(getDeclID(Cat) != 0 && "Bogus category"); 3033 AddDeclRef(Cat, Categories); 3034 } 3035 3036 // Update the size. 3037 Categories[StartIndex] = Size; 3038 3039 // Record this interface -> category map. 3040 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex }; 3041 CategoriesMap.push_back(CatInfo); 3042 } 3043 3044 // Sort the categories map by the definition ID, since the reader will be 3045 // performing binary searches on this information. 3046 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end()); 3047 3048 // Emit the categories map. 3049 using namespace llvm; 3050 llvm::BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 3051 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP)); 3052 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries 3053 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 3054 unsigned AbbrevID = Stream.EmitAbbrev(Abbrev); 3055 3056 RecordData Record; 3057 Record.push_back(OBJC_CATEGORIES_MAP); 3058 Record.push_back(CategoriesMap.size()); 3059 Stream.EmitRecordWithBlob(AbbrevID, Record, 3060 reinterpret_cast<char*>(CategoriesMap.data()), 3061 CategoriesMap.size() * sizeof(ObjCCategoriesInfo)); 3062 3063 // Emit the category lists. 3064 Stream.EmitRecord(OBJC_CATEGORIES, Categories); 3065 } 3066 3067 void ASTWriter::WriteMergedDecls() { 3068 if (!Chain || Chain->MergedDecls.empty()) 3069 return; 3070 3071 RecordData Record; 3072 for (ASTReader::MergedDeclsMap::iterator I = Chain->MergedDecls.begin(), 3073 IEnd = Chain->MergedDecls.end(); 3074 I != IEnd; ++I) { 3075 DeclID CanonID = I->first->isFromASTFile()? I->first->getGlobalID() 3076 : getDeclID(I->first); 3077 assert(CanonID && "Merged declaration not known?"); 3078 3079 Record.push_back(CanonID); 3080 Record.push_back(I->second.size()); 3081 Record.append(I->second.begin(), I->second.end()); 3082 } 3083 Stream.EmitRecord(MERGED_DECLARATIONS, Record); 3084 } 3085 3086 //===----------------------------------------------------------------------===// 3087 // General Serialization Routines 3088 //===----------------------------------------------------------------------===// 3089 3090 /// \brief Write a record containing the given attributes. 3091 void ASTWriter::WriteAttributes(ArrayRef<const Attr*> Attrs, 3092 RecordDataImpl &Record) { 3093 Record.push_back(Attrs.size()); 3094 for (ArrayRef<const Attr *>::iterator i = Attrs.begin(), 3095 e = Attrs.end(); i != e; ++i){ 3096 const Attr *A = *i; 3097 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs 3098 AddSourceRange(A->getRange(), Record); 3099 3100 #include "clang/Serialization/AttrPCHWrite.inc" 3101 3102 } 3103 } 3104 3105 void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) { 3106 Record.push_back(Str.size()); 3107 Record.insert(Record.end(), Str.begin(), Str.end()); 3108 } 3109 3110 void ASTWriter::AddVersionTuple(const VersionTuple &Version, 3111 RecordDataImpl &Record) { 3112 Record.push_back(Version.getMajor()); 3113 if (llvm::Optional<unsigned> Minor = Version.getMinor()) 3114 Record.push_back(*Minor + 1); 3115 else 3116 Record.push_back(0); 3117 if (llvm::Optional<unsigned> Subminor = Version.getSubminor()) 3118 Record.push_back(*Subminor + 1); 3119 else 3120 Record.push_back(0); 3121 } 3122 3123 /// \brief Note that the identifier II occurs at the given offset 3124 /// within the identifier table. 3125 void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) { 3126 IdentID ID = IdentifierIDs[II]; 3127 // Only store offsets new to this AST file. Other identifier names are looked 3128 // up earlier in the chain and thus don't need an offset. 3129 if (ID >= FirstIdentID) 3130 IdentifierOffsets[ID - FirstIdentID] = Offset; 3131 } 3132 3133 /// \brief Note that the selector Sel occurs at the given offset 3134 /// within the method pool/selector table. 3135 void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) { 3136 unsigned ID = SelectorIDs[Sel]; 3137 assert(ID && "Unknown selector"); 3138 // Don't record offsets for selectors that are also available in a different 3139 // file. 3140 if (ID < FirstSelectorID) 3141 return; 3142 SelectorOffsets[ID - FirstSelectorID] = Offset; 3143 } 3144 3145 ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream) 3146 : Stream(Stream), Context(0), PP(0), Chain(0), WritingModule(0), 3147 WritingAST(false), DoneWritingDeclsAndTypes(false), 3148 ASTHasCompilerErrors(false), 3149 FirstDeclID(NUM_PREDEF_DECL_IDS), NextDeclID(FirstDeclID), 3150 FirstTypeID(NUM_PREDEF_TYPE_IDS), NextTypeID(FirstTypeID), 3151 FirstIdentID(NUM_PREDEF_IDENT_IDS), NextIdentID(FirstIdentID), 3152 FirstSubmoduleID(NUM_PREDEF_SUBMODULE_IDS), 3153 NextSubmoduleID(FirstSubmoduleID), 3154 FirstSelectorID(NUM_PREDEF_SELECTOR_IDS), NextSelectorID(FirstSelectorID), 3155 CollectedStmts(&StmtsToEmit), 3156 NumStatements(0), NumMacros(0), NumLexicalDeclContexts(0), 3157 NumVisibleDeclContexts(0), 3158 NextCXXBaseSpecifiersID(1), 3159 DeclParmVarAbbrev(0), DeclContextLexicalAbbrev(0), 3160 DeclContextVisibleLookupAbbrev(0), UpdateVisibleAbbrev(0), 3161 DeclRefExprAbbrev(0), CharacterLiteralAbbrev(0), 3162 DeclRecordAbbrev(0), IntegerLiteralAbbrev(0), 3163 DeclTypedefAbbrev(0), 3164 DeclVarAbbrev(0), DeclFieldAbbrev(0), 3165 DeclEnumAbbrev(0), DeclObjCIvarAbbrev(0) 3166 { 3167 } 3168 3169 ASTWriter::~ASTWriter() { 3170 for (FileDeclIDsTy::iterator 3171 I = FileDeclIDs.begin(), E = FileDeclIDs.end(); I != E; ++I) 3172 delete I->second; 3173 } 3174 3175 void ASTWriter::WriteAST(Sema &SemaRef, MemorizeStatCalls *StatCalls, 3176 const std::string &OutputFile, 3177 Module *WritingModule, StringRef isysroot, 3178 bool hasErrors) { 3179 WritingAST = true; 3180 3181 ASTHasCompilerErrors = hasErrors; 3182 3183 // Emit the file header. 3184 Stream.Emit((unsigned)'C', 8); 3185 Stream.Emit((unsigned)'P', 8); 3186 Stream.Emit((unsigned)'C', 8); 3187 Stream.Emit((unsigned)'H', 8); 3188 3189 WriteBlockInfoBlock(); 3190 3191 Context = &SemaRef.Context; 3192 PP = &SemaRef.PP; 3193 this->WritingModule = WritingModule; 3194 WriteASTCore(SemaRef, StatCalls, isysroot, OutputFile, WritingModule); 3195 Context = 0; 3196 PP = 0; 3197 this->WritingModule = 0; 3198 3199 WritingAST = false; 3200 } 3201 3202 template<typename Vector> 3203 static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec, 3204 ASTWriter::RecordData &Record) { 3205 for (typename Vector::iterator I = Vec.begin(0, true), E = Vec.end(); 3206 I != E; ++I) { 3207 Writer.AddDeclRef(*I, Record); 3208 } 3209 } 3210 3211 void ASTWriter::WriteASTCore(Sema &SemaRef, MemorizeStatCalls *StatCalls, 3212 StringRef isysroot, 3213 const std::string &OutputFile, 3214 Module *WritingModule) { 3215 using namespace llvm; 3216 3217 // Make sure that the AST reader knows to finalize itself. 3218 if (Chain) 3219 Chain->finalizeForWriting(); 3220 3221 ASTContext &Context = SemaRef.Context; 3222 Preprocessor &PP = SemaRef.PP; 3223 3224 // Set up predefined declaration IDs. 3225 DeclIDs[Context.getTranslationUnitDecl()] = PREDEF_DECL_TRANSLATION_UNIT_ID; 3226 if (Context.ObjCIdDecl) 3227 DeclIDs[Context.ObjCIdDecl] = PREDEF_DECL_OBJC_ID_ID; 3228 if (Context.ObjCSelDecl) 3229 DeclIDs[Context.ObjCSelDecl] = PREDEF_DECL_OBJC_SEL_ID; 3230 if (Context.ObjCClassDecl) 3231 DeclIDs[Context.ObjCClassDecl] = PREDEF_DECL_OBJC_CLASS_ID; 3232 if (Context.ObjCProtocolClassDecl) 3233 DeclIDs[Context.ObjCProtocolClassDecl] = PREDEF_DECL_OBJC_PROTOCOL_ID; 3234 if (Context.Int128Decl) 3235 DeclIDs[Context.Int128Decl] = PREDEF_DECL_INT_128_ID; 3236 if (Context.UInt128Decl) 3237 DeclIDs[Context.UInt128Decl] = PREDEF_DECL_UNSIGNED_INT_128_ID; 3238 if (Context.ObjCInstanceTypeDecl) 3239 DeclIDs[Context.ObjCInstanceTypeDecl] = PREDEF_DECL_OBJC_INSTANCETYPE_ID; 3240 if (Context.BuiltinVaListDecl) 3241 DeclIDs[Context.getBuiltinVaListDecl()] = PREDEF_DECL_BUILTIN_VA_LIST_ID; 3242 3243 if (!Chain) { 3244 // Make sure that we emit IdentifierInfos (and any attached 3245 // declarations) for builtins. We don't need to do this when we're 3246 // emitting chained PCH files, because all of the builtins will be 3247 // in the original PCH file. 3248 // FIXME: Modules won't like this at all. 3249 IdentifierTable &Table = PP.getIdentifierTable(); 3250 SmallVector<const char *, 32> BuiltinNames; 3251 Context.BuiltinInfo.GetBuiltinNames(BuiltinNames, 3252 Context.getLangOpts().NoBuiltin); 3253 for (unsigned I = 0, N = BuiltinNames.size(); I != N; ++I) 3254 getIdentifierRef(&Table.get(BuiltinNames[I])); 3255 } 3256 3257 // If there are any out-of-date identifiers, bring them up to date. 3258 if (ExternalPreprocessorSource *ExtSource = PP.getExternalSource()) { 3259 for (IdentifierTable::iterator ID = PP.getIdentifierTable().begin(), 3260 IDEnd = PP.getIdentifierTable().end(); 3261 ID != IDEnd; ++ID) 3262 if (ID->second->isOutOfDate()) 3263 ExtSource->updateOutOfDateIdentifier(*ID->second); 3264 } 3265 3266 // Build a record containing all of the tentative definitions in this file, in 3267 // TentativeDefinitions order. Generally, this record will be empty for 3268 // headers. 3269 RecordData TentativeDefinitions; 3270 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions); 3271 3272 // Build a record containing all of the file scoped decls in this file. 3273 RecordData UnusedFileScopedDecls; 3274 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls, 3275 UnusedFileScopedDecls); 3276 3277 // Build a record containing all of the delegating constructors we still need 3278 // to resolve. 3279 RecordData DelegatingCtorDecls; 3280 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls); 3281 3282 // Write the set of weak, undeclared identifiers. We always write the 3283 // entire table, since later PCH files in a PCH chain are only interested in 3284 // the results at the end of the chain. 3285 RecordData WeakUndeclaredIdentifiers; 3286 if (!SemaRef.WeakUndeclaredIdentifiers.empty()) { 3287 for (llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator 3288 I = SemaRef.WeakUndeclaredIdentifiers.begin(), 3289 E = SemaRef.WeakUndeclaredIdentifiers.end(); I != E; ++I) { 3290 AddIdentifierRef(I->first, WeakUndeclaredIdentifiers); 3291 AddIdentifierRef(I->second.getAlias(), WeakUndeclaredIdentifiers); 3292 AddSourceLocation(I->second.getLocation(), WeakUndeclaredIdentifiers); 3293 WeakUndeclaredIdentifiers.push_back(I->second.getUsed()); 3294 } 3295 } 3296 3297 // Build a record containing all of the locally-scoped external 3298 // declarations in this header file. Generally, this record will be 3299 // empty. 3300 RecordData LocallyScopedExternalDecls; 3301 // FIXME: This is filling in the AST file in densemap order which is 3302 // nondeterminstic! 3303 for (llvm::DenseMap<DeclarationName, NamedDecl *>::iterator 3304 TD = SemaRef.LocallyScopedExternalDecls.begin(), 3305 TDEnd = SemaRef.LocallyScopedExternalDecls.end(); 3306 TD != TDEnd; ++TD) { 3307 if (!TD->second->isFromASTFile()) 3308 AddDeclRef(TD->second, LocallyScopedExternalDecls); 3309 } 3310 3311 // Build a record containing all of the ext_vector declarations. 3312 RecordData ExtVectorDecls; 3313 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls); 3314 3315 // Build a record containing all of the VTable uses information. 3316 RecordData VTableUses; 3317 if (!SemaRef.VTableUses.empty()) { 3318 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) { 3319 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses); 3320 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses); 3321 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]); 3322 } 3323 } 3324 3325 // Build a record containing all of dynamic classes declarations. 3326 RecordData DynamicClasses; 3327 AddLazyVectorDecls(*this, SemaRef.DynamicClasses, DynamicClasses); 3328 3329 // Build a record containing all of pending implicit instantiations. 3330 RecordData PendingInstantiations; 3331 for (std::deque<Sema::PendingImplicitInstantiation>::iterator 3332 I = SemaRef.PendingInstantiations.begin(), 3333 N = SemaRef.PendingInstantiations.end(); I != N; ++I) { 3334 AddDeclRef(I->first, PendingInstantiations); 3335 AddSourceLocation(I->second, PendingInstantiations); 3336 } 3337 assert(SemaRef.PendingLocalImplicitInstantiations.empty() && 3338 "There are local ones at end of translation unit!"); 3339 3340 // Build a record containing some declaration references. 3341 RecordData SemaDeclRefs; 3342 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc) { 3343 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs); 3344 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs); 3345 } 3346 3347 RecordData CUDASpecialDeclRefs; 3348 if (Context.getcudaConfigureCallDecl()) { 3349 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs); 3350 } 3351 3352 // Build a record containing all of the known namespaces. 3353 RecordData KnownNamespaces; 3354 for (llvm::DenseMap<NamespaceDecl*, bool>::iterator 3355 I = SemaRef.KnownNamespaces.begin(), 3356 IEnd = SemaRef.KnownNamespaces.end(); 3357 I != IEnd; ++I) { 3358 if (!I->second) 3359 AddDeclRef(I->first, KnownNamespaces); 3360 } 3361 3362 // Write the remaining AST contents. 3363 RecordData Record; 3364 Stream.EnterSubblock(AST_BLOCK_ID, 5); 3365 WriteMetadata(Context, isysroot, OutputFile); 3366 WriteLanguageOptions(Context.getLangOpts()); 3367 if (StatCalls && isysroot.empty()) 3368 WriteStatCache(*StatCalls); 3369 3370 // Create a lexical update block containing all of the declarations in the 3371 // translation unit that do not come from other AST files. 3372 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl(); 3373 SmallVector<KindDeclIDPair, 64> NewGlobalDecls; 3374 for (DeclContext::decl_iterator I = TU->noload_decls_begin(), 3375 E = TU->noload_decls_end(); 3376 I != E; ++I) { 3377 if (!(*I)->isFromASTFile()) 3378 NewGlobalDecls.push_back(std::make_pair((*I)->getKind(), GetDeclRef(*I))); 3379 } 3380 3381 llvm::BitCodeAbbrev *Abv = new llvm::BitCodeAbbrev(); 3382 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL)); 3383 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob)); 3384 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(Abv); 3385 Record.clear(); 3386 Record.push_back(TU_UPDATE_LEXICAL); 3387 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record, 3388 data(NewGlobalDecls)); 3389 3390 // And a visible updates block for the translation unit. 3391 Abv = new llvm::BitCodeAbbrev(); 3392 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE)); 3393 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6)); 3394 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Fixed, 32)); 3395 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob)); 3396 UpdateVisibleAbbrev = Stream.EmitAbbrev(Abv); 3397 WriteDeclContextVisibleUpdate(TU); 3398 3399 // If the translation unit has an anonymous namespace, and we don't already 3400 // have an update block for it, write it as an update block. 3401 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) { 3402 ASTWriter::UpdateRecord &Record = DeclUpdates[TU]; 3403 if (Record.empty()) { 3404 Record.push_back(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE); 3405 Record.push_back(reinterpret_cast<uint64_t>(NS)); 3406 } 3407 } 3408 3409 // Make sure visible decls, added to DeclContexts previously loaded from 3410 // an AST file, are registered for serialization. 3411 for (SmallVector<const Decl *, 16>::iterator 3412 I = UpdatingVisibleDecls.begin(), 3413 E = UpdatingVisibleDecls.end(); I != E; ++I) { 3414 GetDeclRef(*I); 3415 } 3416 3417 // Resolve any declaration pointers within the declaration updates block. 3418 ResolveDeclUpdatesBlocks(); 3419 3420 // Form the record of special types. 3421 RecordData SpecialTypes; 3422 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes); 3423 AddTypeRef(Context.getFILEType(), SpecialTypes); 3424 AddTypeRef(Context.getjmp_bufType(), SpecialTypes); 3425 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes); 3426 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes); 3427 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes); 3428 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes); 3429 AddTypeRef(Context.getucontext_tType(), SpecialTypes); 3430 3431 // Keep writing types and declarations until all types and 3432 // declarations have been written. 3433 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 3434 WriteDeclsBlockAbbrevs(); 3435 for (DeclsToRewriteTy::iterator I = DeclsToRewrite.begin(), 3436 E = DeclsToRewrite.end(); 3437 I != E; ++I) 3438 DeclTypesToEmit.push(const_cast<Decl*>(*I)); 3439 while (!DeclTypesToEmit.empty()) { 3440 DeclOrType DOT = DeclTypesToEmit.front(); 3441 DeclTypesToEmit.pop(); 3442 if (DOT.isType()) 3443 WriteType(DOT.getType()); 3444 else 3445 WriteDecl(Context, DOT.getDecl()); 3446 } 3447 Stream.ExitBlock(); 3448 3449 DoneWritingDeclsAndTypes = true; 3450 3451 WriteFileDeclIDsMap(); 3452 WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot); 3453 WriteComments(); 3454 3455 if (Chain) { 3456 // Write the mapping information describing our module dependencies and how 3457 // each of those modules were mapped into our own offset/ID space, so that 3458 // the reader can build the appropriate mapping to its own offset/ID space. 3459 // The map consists solely of a blob with the following format: 3460 // *(module-name-len:i16 module-name:len*i8 3461 // source-location-offset:i32 3462 // identifier-id:i32 3463 // preprocessed-entity-id:i32 3464 // macro-definition-id:i32 3465 // submodule-id:i32 3466 // selector-id:i32 3467 // declaration-id:i32 3468 // c++-base-specifiers-id:i32 3469 // type-id:i32) 3470 // 3471 llvm::BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 3472 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP)); 3473 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 3474 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(Abbrev); 3475 SmallString<2048> Buffer; 3476 { 3477 llvm::raw_svector_ostream Out(Buffer); 3478 for (ModuleManager::ModuleConstIterator M = Chain->ModuleMgr.begin(), 3479 MEnd = Chain->ModuleMgr.end(); 3480 M != MEnd; ++M) { 3481 StringRef FileName = (*M)->FileName; 3482 io::Emit16(Out, FileName.size()); 3483 Out.write(FileName.data(), FileName.size()); 3484 io::Emit32(Out, (*M)->SLocEntryBaseOffset); 3485 io::Emit32(Out, (*M)->BaseIdentifierID); 3486 io::Emit32(Out, (*M)->BasePreprocessedEntityID); 3487 io::Emit32(Out, (*M)->BaseSubmoduleID); 3488 io::Emit32(Out, (*M)->BaseSelectorID); 3489 io::Emit32(Out, (*M)->BaseDeclID); 3490 io::Emit32(Out, (*M)->BaseTypeIndex); 3491 } 3492 } 3493 Record.clear(); 3494 Record.push_back(MODULE_OFFSET_MAP); 3495 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record, 3496 Buffer.data(), Buffer.size()); 3497 } 3498 WritePreprocessor(PP, WritingModule != 0); 3499 WriteHeaderSearch(PP.getHeaderSearchInfo(), isysroot); 3500 WriteSelectors(SemaRef); 3501 WriteReferencedSelectorsPool(SemaRef); 3502 WriteIdentifierTable(PP, SemaRef.IdResolver, WritingModule != 0); 3503 WriteFPPragmaOptions(SemaRef.getFPOptions()); 3504 WriteOpenCLExtensions(SemaRef); 3505 3506 WriteTypeDeclOffsets(); 3507 WritePragmaDiagnosticMappings(Context.getDiagnostics()); 3508 3509 WriteCXXBaseSpecifiersOffsets(); 3510 3511 // If we're emitting a module, write out the submodule information. 3512 if (WritingModule) 3513 WriteSubmodules(WritingModule); 3514 3515 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes); 3516 3517 // Write the record containing external, unnamed definitions. 3518 if (!ExternalDefinitions.empty()) 3519 Stream.EmitRecord(EXTERNAL_DEFINITIONS, ExternalDefinitions); 3520 3521 // Write the record containing tentative definitions. 3522 if (!TentativeDefinitions.empty()) 3523 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions); 3524 3525 // Write the record containing unused file scoped decls. 3526 if (!UnusedFileScopedDecls.empty()) 3527 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls); 3528 3529 // Write the record containing weak undeclared identifiers. 3530 if (!WeakUndeclaredIdentifiers.empty()) 3531 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS, 3532 WeakUndeclaredIdentifiers); 3533 3534 // Write the record containing locally-scoped external definitions. 3535 if (!LocallyScopedExternalDecls.empty()) 3536 Stream.EmitRecord(LOCALLY_SCOPED_EXTERNAL_DECLS, 3537 LocallyScopedExternalDecls); 3538 3539 // Write the record containing ext_vector type names. 3540 if (!ExtVectorDecls.empty()) 3541 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls); 3542 3543 // Write the record containing VTable uses information. 3544 if (!VTableUses.empty()) 3545 Stream.EmitRecord(VTABLE_USES, VTableUses); 3546 3547 // Write the record containing dynamic classes declarations. 3548 if (!DynamicClasses.empty()) 3549 Stream.EmitRecord(DYNAMIC_CLASSES, DynamicClasses); 3550 3551 // Write the record containing pending implicit instantiations. 3552 if (!PendingInstantiations.empty()) 3553 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations); 3554 3555 // Write the record containing declaration references of Sema. 3556 if (!SemaDeclRefs.empty()) 3557 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs); 3558 3559 // Write the record containing CUDA-specific declaration references. 3560 if (!CUDASpecialDeclRefs.empty()) 3561 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs); 3562 3563 // Write the delegating constructors. 3564 if (!DelegatingCtorDecls.empty()) 3565 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls); 3566 3567 // Write the known namespaces. 3568 if (!KnownNamespaces.empty()) 3569 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces); 3570 3571 // Write the visible updates to DeclContexts. 3572 for (llvm::SmallPtrSet<const DeclContext *, 16>::iterator 3573 I = UpdatedDeclContexts.begin(), 3574 E = UpdatedDeclContexts.end(); 3575 I != E; ++I) 3576 WriteDeclContextVisibleUpdate(*I); 3577 3578 if (!WritingModule) { 3579 // Write the submodules that were imported, if any. 3580 RecordData ImportedModules; 3581 for (ASTContext::import_iterator I = Context.local_import_begin(), 3582 IEnd = Context.local_import_end(); 3583 I != IEnd; ++I) { 3584 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end()); 3585 ImportedModules.push_back(SubmoduleIDs[I->getImportedModule()]); 3586 } 3587 if (!ImportedModules.empty()) { 3588 // Sort module IDs. 3589 llvm::array_pod_sort(ImportedModules.begin(), ImportedModules.end()); 3590 3591 // Unique module IDs. 3592 ImportedModules.erase(std::unique(ImportedModules.begin(), 3593 ImportedModules.end()), 3594 ImportedModules.end()); 3595 3596 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules); 3597 } 3598 } 3599 3600 WriteDeclUpdatesBlocks(); 3601 WriteDeclReplacementsBlock(); 3602 WriteMergedDecls(); 3603 WriteRedeclarations(); 3604 WriteObjCCategories(); 3605 3606 // Some simple statistics 3607 Record.clear(); 3608 Record.push_back(NumStatements); 3609 Record.push_back(NumMacros); 3610 Record.push_back(NumLexicalDeclContexts); 3611 Record.push_back(NumVisibleDeclContexts); 3612 Stream.EmitRecord(STATISTICS, Record); 3613 Stream.ExitBlock(); 3614 } 3615 3616 /// \brief Go through the declaration update blocks and resolve declaration 3617 /// pointers into declaration IDs. 3618 void ASTWriter::ResolveDeclUpdatesBlocks() { 3619 for (DeclUpdateMap::iterator 3620 I = DeclUpdates.begin(), E = DeclUpdates.end(); I != E; ++I) { 3621 const Decl *D = I->first; 3622 UpdateRecord &URec = I->second; 3623 3624 if (isRewritten(D)) 3625 continue; // The decl will be written completely 3626 3627 unsigned Idx = 0, N = URec.size(); 3628 while (Idx < N) { 3629 switch ((DeclUpdateKind)URec[Idx++]) { 3630 case UPD_CXX_ADDED_IMPLICIT_MEMBER: 3631 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION: 3632 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: 3633 URec[Idx] = GetDeclRef(reinterpret_cast<Decl *>(URec[Idx])); 3634 ++Idx; 3635 break; 3636 3637 case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER: 3638 ++Idx; 3639 break; 3640 } 3641 } 3642 } 3643 } 3644 3645 void ASTWriter::WriteDeclUpdatesBlocks() { 3646 if (DeclUpdates.empty()) 3647 return; 3648 3649 RecordData OffsetsRecord; 3650 Stream.EnterSubblock(DECL_UPDATES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 3651 for (DeclUpdateMap::iterator 3652 I = DeclUpdates.begin(), E = DeclUpdates.end(); I != E; ++I) { 3653 const Decl *D = I->first; 3654 UpdateRecord &URec = I->second; 3655 3656 if (isRewritten(D)) 3657 continue; // The decl will be written completely,no need to store updates. 3658 3659 uint64_t Offset = Stream.GetCurrentBitNo(); 3660 Stream.EmitRecord(DECL_UPDATES, URec); 3661 3662 OffsetsRecord.push_back(GetDeclRef(D)); 3663 OffsetsRecord.push_back(Offset); 3664 } 3665 Stream.ExitBlock(); 3666 Stream.EmitRecord(DECL_UPDATE_OFFSETS, OffsetsRecord); 3667 } 3668 3669 void ASTWriter::WriteDeclReplacementsBlock() { 3670 if (ReplacedDecls.empty()) 3671 return; 3672 3673 RecordData Record; 3674 for (SmallVector<ReplacedDeclInfo, 16>::iterator 3675 I = ReplacedDecls.begin(), E = ReplacedDecls.end(); I != E; ++I) { 3676 Record.push_back(I->ID); 3677 Record.push_back(I->Offset); 3678 Record.push_back(I->Loc); 3679 } 3680 Stream.EmitRecord(DECL_REPLACEMENTS, Record); 3681 } 3682 3683 void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) { 3684 Record.push_back(Loc.getRawEncoding()); 3685 } 3686 3687 void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) { 3688 AddSourceLocation(Range.getBegin(), Record); 3689 AddSourceLocation(Range.getEnd(), Record); 3690 } 3691 3692 void ASTWriter::AddAPInt(const llvm::APInt &Value, RecordDataImpl &Record) { 3693 Record.push_back(Value.getBitWidth()); 3694 const uint64_t *Words = Value.getRawData(); 3695 Record.append(Words, Words + Value.getNumWords()); 3696 } 3697 3698 void ASTWriter::AddAPSInt(const llvm::APSInt &Value, RecordDataImpl &Record) { 3699 Record.push_back(Value.isUnsigned()); 3700 AddAPInt(Value, Record); 3701 } 3702 3703 void ASTWriter::AddAPFloat(const llvm::APFloat &Value, RecordDataImpl &Record) { 3704 AddAPInt(Value.bitcastToAPInt(), Record); 3705 } 3706 3707 void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) { 3708 Record.push_back(getIdentifierRef(II)); 3709 } 3710 3711 IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) { 3712 if (II == 0) 3713 return 0; 3714 3715 IdentID &ID = IdentifierIDs[II]; 3716 if (ID == 0) 3717 ID = NextIdentID++; 3718 return ID; 3719 } 3720 3721 void ASTWriter::AddSelectorRef(const Selector SelRef, RecordDataImpl &Record) { 3722 Record.push_back(getSelectorRef(SelRef)); 3723 } 3724 3725 SelectorID ASTWriter::getSelectorRef(Selector Sel) { 3726 if (Sel.getAsOpaquePtr() == 0) { 3727 return 0; 3728 } 3729 3730 SelectorID &SID = SelectorIDs[Sel]; 3731 if (SID == 0 && Chain) { 3732 // This might trigger a ReadSelector callback, which will set the ID for 3733 // this selector. 3734 Chain->LoadSelector(Sel); 3735 } 3736 if (SID == 0) { 3737 SID = NextSelectorID++; 3738 } 3739 return SID; 3740 } 3741 3742 void ASTWriter::AddCXXTemporary(const CXXTemporary *Temp, RecordDataImpl &Record) { 3743 AddDeclRef(Temp->getDestructor(), Record); 3744 } 3745 3746 void ASTWriter::AddCXXBaseSpecifiersRef(CXXBaseSpecifier const *Bases, 3747 CXXBaseSpecifier const *BasesEnd, 3748 RecordDataImpl &Record) { 3749 assert(Bases != BasesEnd && "Empty base-specifier sets are not recorded"); 3750 CXXBaseSpecifiersToWrite.push_back( 3751 QueuedCXXBaseSpecifiers(NextCXXBaseSpecifiersID, 3752 Bases, BasesEnd)); 3753 Record.push_back(NextCXXBaseSpecifiersID++); 3754 } 3755 3756 void ASTWriter::AddTemplateArgumentLocInfo(TemplateArgument::ArgKind Kind, 3757 const TemplateArgumentLocInfo &Arg, 3758 RecordDataImpl &Record) { 3759 switch (Kind) { 3760 case TemplateArgument::Expression: 3761 AddStmt(Arg.getAsExpr()); 3762 break; 3763 case TemplateArgument::Type: 3764 AddTypeSourceInfo(Arg.getAsTypeSourceInfo(), Record); 3765 break; 3766 case TemplateArgument::Template: 3767 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc(), Record); 3768 AddSourceLocation(Arg.getTemplateNameLoc(), Record); 3769 break; 3770 case TemplateArgument::TemplateExpansion: 3771 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc(), Record); 3772 AddSourceLocation(Arg.getTemplateNameLoc(), Record); 3773 AddSourceLocation(Arg.getTemplateEllipsisLoc(), Record); 3774 break; 3775 case TemplateArgument::Null: 3776 case TemplateArgument::Integral: 3777 case TemplateArgument::Declaration: 3778 case TemplateArgument::Pack: 3779 break; 3780 } 3781 } 3782 3783 void ASTWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg, 3784 RecordDataImpl &Record) { 3785 AddTemplateArgument(Arg.getArgument(), Record); 3786 3787 if (Arg.getArgument().getKind() == TemplateArgument::Expression) { 3788 bool InfoHasSameExpr 3789 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr(); 3790 Record.push_back(InfoHasSameExpr); 3791 if (InfoHasSameExpr) 3792 return; // Avoid storing the same expr twice. 3793 } 3794 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo(), 3795 Record); 3796 } 3797 3798 void ASTWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo, 3799 RecordDataImpl &Record) { 3800 if (TInfo == 0) { 3801 AddTypeRef(QualType(), Record); 3802 return; 3803 } 3804 3805 AddTypeLoc(TInfo->getTypeLoc(), Record); 3806 } 3807 3808 void ASTWriter::AddTypeLoc(TypeLoc TL, RecordDataImpl &Record) { 3809 AddTypeRef(TL.getType(), Record); 3810 3811 TypeLocWriter TLW(*this, Record); 3812 for (; !TL.isNull(); TL = TL.getNextTypeLoc()) 3813 TLW.Visit(TL); 3814 } 3815 3816 void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) { 3817 Record.push_back(GetOrCreateTypeID(T)); 3818 } 3819 3820 TypeID ASTWriter::GetOrCreateTypeID( QualType T) { 3821 return MakeTypeID(*Context, T, 3822 std::bind1st(std::mem_fun(&ASTWriter::GetOrCreateTypeIdx), this)); 3823 } 3824 3825 TypeID ASTWriter::getTypeID(QualType T) const { 3826 return MakeTypeID(*Context, T, 3827 std::bind1st(std::mem_fun(&ASTWriter::getTypeIdx), this)); 3828 } 3829 3830 TypeIdx ASTWriter::GetOrCreateTypeIdx(QualType T) { 3831 if (T.isNull()) 3832 return TypeIdx(); 3833 assert(!T.getLocalFastQualifiers()); 3834 3835 TypeIdx &Idx = TypeIdxs[T]; 3836 if (Idx.getIndex() == 0) { 3837 if (DoneWritingDeclsAndTypes) { 3838 assert(0 && "New type seen after serializing all the types to emit!"); 3839 return TypeIdx(); 3840 } 3841 3842 // We haven't seen this type before. Assign it a new ID and put it 3843 // into the queue of types to emit. 3844 Idx = TypeIdx(NextTypeID++); 3845 DeclTypesToEmit.push(T); 3846 } 3847 return Idx; 3848 } 3849 3850 TypeIdx ASTWriter::getTypeIdx(QualType T) const { 3851 if (T.isNull()) 3852 return TypeIdx(); 3853 assert(!T.getLocalFastQualifiers()); 3854 3855 TypeIdxMap::const_iterator I = TypeIdxs.find(T); 3856 assert(I != TypeIdxs.end() && "Type not emitted!"); 3857 return I->second; 3858 } 3859 3860 void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) { 3861 Record.push_back(GetDeclRef(D)); 3862 } 3863 3864 DeclID ASTWriter::GetDeclRef(const Decl *D) { 3865 assert(WritingAST && "Cannot request a declaration ID before AST writing"); 3866 3867 if (D == 0) { 3868 return 0; 3869 } 3870 3871 // If D comes from an AST file, its declaration ID is already known and 3872 // fixed. 3873 if (D->isFromASTFile()) 3874 return D->getGlobalID(); 3875 3876 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer"); 3877 DeclID &ID = DeclIDs[D]; 3878 if (ID == 0) { 3879 if (DoneWritingDeclsAndTypes) { 3880 assert(0 && "New decl seen after serializing all the decls to emit!"); 3881 return 0; 3882 } 3883 3884 // We haven't seen this declaration before. Give it a new ID and 3885 // enqueue it in the list of declarations to emit. 3886 ID = NextDeclID++; 3887 DeclTypesToEmit.push(const_cast<Decl *>(D)); 3888 } 3889 3890 return ID; 3891 } 3892 3893 DeclID ASTWriter::getDeclID(const Decl *D) { 3894 if (D == 0) 3895 return 0; 3896 3897 // If D comes from an AST file, its declaration ID is already known and 3898 // fixed. 3899 if (D->isFromASTFile()) 3900 return D->getGlobalID(); 3901 3902 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!"); 3903 return DeclIDs[D]; 3904 } 3905 3906 static inline bool compLocDecl(std::pair<unsigned, serialization::DeclID> L, 3907 std::pair<unsigned, serialization::DeclID> R) { 3908 return L.first < R.first; 3909 } 3910 3911 void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) { 3912 assert(ID); 3913 assert(D); 3914 3915 SourceLocation Loc = D->getLocation(); 3916 if (Loc.isInvalid()) 3917 return; 3918 3919 // We only keep track of the file-level declarations of each file. 3920 if (!D->getLexicalDeclContext()->isFileContext()) 3921 return; 3922 // FIXME: ParmVarDecls that are part of a function type of a parameter of 3923 // a function/objc method, should not have TU as lexical context. 3924 if (isa<ParmVarDecl>(D)) 3925 return; 3926 3927 SourceManager &SM = Context->getSourceManager(); 3928 SourceLocation FileLoc = SM.getFileLoc(Loc); 3929 assert(SM.isLocalSourceLocation(FileLoc)); 3930 FileID FID; 3931 unsigned Offset; 3932 llvm::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc); 3933 if (FID.isInvalid()) 3934 return; 3935 const SrcMgr::SLocEntry *Entry = &SM.getSLocEntry(FID); 3936 assert(Entry->isFile()); 3937 3938 DeclIDInFileInfo *&Info = FileDeclIDs[Entry]; 3939 if (!Info) 3940 Info = new DeclIDInFileInfo(); 3941 3942 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID); 3943 LocDeclIDsTy &Decls = Info->DeclIDs; 3944 3945 if (Decls.empty() || Decls.back().first <= Offset) { 3946 Decls.push_back(LocDecl); 3947 return; 3948 } 3949 3950 LocDeclIDsTy::iterator 3951 I = std::upper_bound(Decls.begin(), Decls.end(), LocDecl, compLocDecl); 3952 3953 Decls.insert(I, LocDecl); 3954 } 3955 3956 void ASTWriter::AddDeclarationName(DeclarationName Name, RecordDataImpl &Record) { 3957 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc. 3958 Record.push_back(Name.getNameKind()); 3959 switch (Name.getNameKind()) { 3960 case DeclarationName::Identifier: 3961 AddIdentifierRef(Name.getAsIdentifierInfo(), Record); 3962 break; 3963 3964 case DeclarationName::ObjCZeroArgSelector: 3965 case DeclarationName::ObjCOneArgSelector: 3966 case DeclarationName::ObjCMultiArgSelector: 3967 AddSelectorRef(Name.getObjCSelector(), Record); 3968 break; 3969 3970 case DeclarationName::CXXConstructorName: 3971 case DeclarationName::CXXDestructorName: 3972 case DeclarationName::CXXConversionFunctionName: 3973 AddTypeRef(Name.getCXXNameType(), Record); 3974 break; 3975 3976 case DeclarationName::CXXOperatorName: 3977 Record.push_back(Name.getCXXOverloadedOperator()); 3978 break; 3979 3980 case DeclarationName::CXXLiteralOperatorName: 3981 AddIdentifierRef(Name.getCXXLiteralIdentifier(), Record); 3982 break; 3983 3984 case DeclarationName::CXXUsingDirective: 3985 // No extra data to emit 3986 break; 3987 } 3988 } 3989 3990 void ASTWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc, 3991 DeclarationName Name, RecordDataImpl &Record) { 3992 switch (Name.getNameKind()) { 3993 case DeclarationName::CXXConstructorName: 3994 case DeclarationName::CXXDestructorName: 3995 case DeclarationName::CXXConversionFunctionName: 3996 AddTypeSourceInfo(DNLoc.NamedType.TInfo, Record); 3997 break; 3998 3999 case DeclarationName::CXXOperatorName: 4000 AddSourceLocation( 4001 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.BeginOpNameLoc), 4002 Record); 4003 AddSourceLocation( 4004 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc), 4005 Record); 4006 break; 4007 4008 case DeclarationName::CXXLiteralOperatorName: 4009 AddSourceLocation( 4010 SourceLocation::getFromRawEncoding(DNLoc.CXXLiteralOperatorName.OpNameLoc), 4011 Record); 4012 break; 4013 4014 case DeclarationName::Identifier: 4015 case DeclarationName::ObjCZeroArgSelector: 4016 case DeclarationName::ObjCOneArgSelector: 4017 case DeclarationName::ObjCMultiArgSelector: 4018 case DeclarationName::CXXUsingDirective: 4019 break; 4020 } 4021 } 4022 4023 void ASTWriter::AddDeclarationNameInfo(const DeclarationNameInfo &NameInfo, 4024 RecordDataImpl &Record) { 4025 AddDeclarationName(NameInfo.getName(), Record); 4026 AddSourceLocation(NameInfo.getLoc(), Record); 4027 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName(), Record); 4028 } 4029 4030 void ASTWriter::AddQualifierInfo(const QualifierInfo &Info, 4031 RecordDataImpl &Record) { 4032 AddNestedNameSpecifierLoc(Info.QualifierLoc, Record); 4033 Record.push_back(Info.NumTemplParamLists); 4034 for (unsigned i=0, e=Info.NumTemplParamLists; i != e; ++i) 4035 AddTemplateParameterList(Info.TemplParamLists[i], Record); 4036 } 4037 4038 void ASTWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS, 4039 RecordDataImpl &Record) { 4040 // Nested name specifiers usually aren't too long. I think that 8 would 4041 // typically accommodate the vast majority. 4042 SmallVector<NestedNameSpecifier *, 8> NestedNames; 4043 4044 // Push each of the NNS's onto a stack for serialization in reverse order. 4045 while (NNS) { 4046 NestedNames.push_back(NNS); 4047 NNS = NNS->getPrefix(); 4048 } 4049 4050 Record.push_back(NestedNames.size()); 4051 while(!NestedNames.empty()) { 4052 NNS = NestedNames.pop_back_val(); 4053 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind(); 4054 Record.push_back(Kind); 4055 switch (Kind) { 4056 case NestedNameSpecifier::Identifier: 4057 AddIdentifierRef(NNS->getAsIdentifier(), Record); 4058 break; 4059 4060 case NestedNameSpecifier::Namespace: 4061 AddDeclRef(NNS->getAsNamespace(), Record); 4062 break; 4063 4064 case NestedNameSpecifier::NamespaceAlias: 4065 AddDeclRef(NNS->getAsNamespaceAlias(), Record); 4066 break; 4067 4068 case NestedNameSpecifier::TypeSpec: 4069 case NestedNameSpecifier::TypeSpecWithTemplate: 4070 AddTypeRef(QualType(NNS->getAsType(), 0), Record); 4071 Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); 4072 break; 4073 4074 case NestedNameSpecifier::Global: 4075 // Don't need to write an associated value. 4076 break; 4077 } 4078 } 4079 } 4080 4081 void ASTWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, 4082 RecordDataImpl &Record) { 4083 // Nested name specifiers usually aren't too long. I think that 8 would 4084 // typically accommodate the vast majority. 4085 SmallVector<NestedNameSpecifierLoc , 8> NestedNames; 4086 4087 // Push each of the nested-name-specifiers's onto a stack for 4088 // serialization in reverse order. 4089 while (NNS) { 4090 NestedNames.push_back(NNS); 4091 NNS = NNS.getPrefix(); 4092 } 4093 4094 Record.push_back(NestedNames.size()); 4095 while(!NestedNames.empty()) { 4096 NNS = NestedNames.pop_back_val(); 4097 NestedNameSpecifier::SpecifierKind Kind 4098 = NNS.getNestedNameSpecifier()->getKind(); 4099 Record.push_back(Kind); 4100 switch (Kind) { 4101 case NestedNameSpecifier::Identifier: 4102 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier(), Record); 4103 AddSourceRange(NNS.getLocalSourceRange(), Record); 4104 break; 4105 4106 case NestedNameSpecifier::Namespace: 4107 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace(), Record); 4108 AddSourceRange(NNS.getLocalSourceRange(), Record); 4109 break; 4110 4111 case NestedNameSpecifier::NamespaceAlias: 4112 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias(), Record); 4113 AddSourceRange(NNS.getLocalSourceRange(), Record); 4114 break; 4115 4116 case NestedNameSpecifier::TypeSpec: 4117 case NestedNameSpecifier::TypeSpecWithTemplate: 4118 Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); 4119 AddTypeLoc(NNS.getTypeLoc(), Record); 4120 AddSourceLocation(NNS.getLocalSourceRange().getEnd(), Record); 4121 break; 4122 4123 case NestedNameSpecifier::Global: 4124 AddSourceLocation(NNS.getLocalSourceRange().getEnd(), Record); 4125 break; 4126 } 4127 } 4128 } 4129 4130 void ASTWriter::AddTemplateName(TemplateName Name, RecordDataImpl &Record) { 4131 TemplateName::NameKind Kind = Name.getKind(); 4132 Record.push_back(Kind); 4133 switch (Kind) { 4134 case TemplateName::Template: 4135 AddDeclRef(Name.getAsTemplateDecl(), Record); 4136 break; 4137 4138 case TemplateName::OverloadedTemplate: { 4139 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate(); 4140 Record.push_back(OvT->size()); 4141 for (OverloadedTemplateStorage::iterator I = OvT->begin(), E = OvT->end(); 4142 I != E; ++I) 4143 AddDeclRef(*I, Record); 4144 break; 4145 } 4146 4147 case TemplateName::QualifiedTemplate: { 4148 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName(); 4149 AddNestedNameSpecifier(QualT->getQualifier(), Record); 4150 Record.push_back(QualT->hasTemplateKeyword()); 4151 AddDeclRef(QualT->getTemplateDecl(), Record); 4152 break; 4153 } 4154 4155 case TemplateName::DependentTemplate: { 4156 DependentTemplateName *DepT = Name.getAsDependentTemplateName(); 4157 AddNestedNameSpecifier(DepT->getQualifier(), Record); 4158 Record.push_back(DepT->isIdentifier()); 4159 if (DepT->isIdentifier()) 4160 AddIdentifierRef(DepT->getIdentifier(), Record); 4161 else 4162 Record.push_back(DepT->getOperator()); 4163 break; 4164 } 4165 4166 case TemplateName::SubstTemplateTemplateParm: { 4167 SubstTemplateTemplateParmStorage *subst 4168 = Name.getAsSubstTemplateTemplateParm(); 4169 AddDeclRef(subst->getParameter(), Record); 4170 AddTemplateName(subst->getReplacement(), Record); 4171 break; 4172 } 4173 4174 case TemplateName::SubstTemplateTemplateParmPack: { 4175 SubstTemplateTemplateParmPackStorage *SubstPack 4176 = Name.getAsSubstTemplateTemplateParmPack(); 4177 AddDeclRef(SubstPack->getParameterPack(), Record); 4178 AddTemplateArgument(SubstPack->getArgumentPack(), Record); 4179 break; 4180 } 4181 } 4182 } 4183 4184 void ASTWriter::AddTemplateArgument(const TemplateArgument &Arg, 4185 RecordDataImpl &Record) { 4186 Record.push_back(Arg.getKind()); 4187 switch (Arg.getKind()) { 4188 case TemplateArgument::Null: 4189 break; 4190 case TemplateArgument::Type: 4191 AddTypeRef(Arg.getAsType(), Record); 4192 break; 4193 case TemplateArgument::Declaration: 4194 AddDeclRef(Arg.getAsDecl(), Record); 4195 break; 4196 case TemplateArgument::Integral: 4197 AddAPSInt(Arg.getAsIntegral(), Record); 4198 AddTypeRef(Arg.getIntegralType(), Record); 4199 break; 4200 case TemplateArgument::Template: 4201 AddTemplateName(Arg.getAsTemplateOrTemplatePattern(), Record); 4202 break; 4203 case TemplateArgument::TemplateExpansion: 4204 AddTemplateName(Arg.getAsTemplateOrTemplatePattern(), Record); 4205 if (llvm::Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions()) 4206 Record.push_back(*NumExpansions + 1); 4207 else 4208 Record.push_back(0); 4209 break; 4210 case TemplateArgument::Expression: 4211 AddStmt(Arg.getAsExpr()); 4212 break; 4213 case TemplateArgument::Pack: 4214 Record.push_back(Arg.pack_size()); 4215 for (TemplateArgument::pack_iterator I=Arg.pack_begin(), E=Arg.pack_end(); 4216 I != E; ++I) 4217 AddTemplateArgument(*I, Record); 4218 break; 4219 } 4220 } 4221 4222 void 4223 ASTWriter::AddTemplateParameterList(const TemplateParameterList *TemplateParams, 4224 RecordDataImpl &Record) { 4225 assert(TemplateParams && "No TemplateParams!"); 4226 AddSourceLocation(TemplateParams->getTemplateLoc(), Record); 4227 AddSourceLocation(TemplateParams->getLAngleLoc(), Record); 4228 AddSourceLocation(TemplateParams->getRAngleLoc(), Record); 4229 Record.push_back(TemplateParams->size()); 4230 for (TemplateParameterList::const_iterator 4231 P = TemplateParams->begin(), PEnd = TemplateParams->end(); 4232 P != PEnd; ++P) 4233 AddDeclRef(*P, Record); 4234 } 4235 4236 /// \brief Emit a template argument list. 4237 void 4238 ASTWriter::AddTemplateArgumentList(const TemplateArgumentList *TemplateArgs, 4239 RecordDataImpl &Record) { 4240 assert(TemplateArgs && "No TemplateArgs!"); 4241 Record.push_back(TemplateArgs->size()); 4242 for (int i=0, e = TemplateArgs->size(); i != e; ++i) 4243 AddTemplateArgument(TemplateArgs->get(i), Record); 4244 } 4245 4246 4247 void 4248 ASTWriter::AddUnresolvedSet(const UnresolvedSetImpl &Set, RecordDataImpl &Record) { 4249 Record.push_back(Set.size()); 4250 for (UnresolvedSetImpl::const_iterator 4251 I = Set.begin(), E = Set.end(); I != E; ++I) { 4252 AddDeclRef(I.getDecl(), Record); 4253 Record.push_back(I.getAccess()); 4254 } 4255 } 4256 4257 void ASTWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base, 4258 RecordDataImpl &Record) { 4259 Record.push_back(Base.isVirtual()); 4260 Record.push_back(Base.isBaseOfClass()); 4261 Record.push_back(Base.getAccessSpecifierAsWritten()); 4262 Record.push_back(Base.getInheritConstructors()); 4263 AddTypeSourceInfo(Base.getTypeSourceInfo(), Record); 4264 AddSourceRange(Base.getSourceRange(), Record); 4265 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc() 4266 : SourceLocation(), 4267 Record); 4268 } 4269 4270 void ASTWriter::FlushCXXBaseSpecifiers() { 4271 RecordData Record; 4272 for (unsigned I = 0, N = CXXBaseSpecifiersToWrite.size(); I != N; ++I) { 4273 Record.clear(); 4274 4275 // Record the offset of this base-specifier set. 4276 unsigned Index = CXXBaseSpecifiersToWrite[I].ID - 1; 4277 if (Index == CXXBaseSpecifiersOffsets.size()) 4278 CXXBaseSpecifiersOffsets.push_back(Stream.GetCurrentBitNo()); 4279 else { 4280 if (Index > CXXBaseSpecifiersOffsets.size()) 4281 CXXBaseSpecifiersOffsets.resize(Index + 1); 4282 CXXBaseSpecifiersOffsets[Index] = Stream.GetCurrentBitNo(); 4283 } 4284 4285 const CXXBaseSpecifier *B = CXXBaseSpecifiersToWrite[I].Bases, 4286 *BEnd = CXXBaseSpecifiersToWrite[I].BasesEnd; 4287 Record.push_back(BEnd - B); 4288 for (; B != BEnd; ++B) 4289 AddCXXBaseSpecifier(*B, Record); 4290 Stream.EmitRecord(serialization::DECL_CXX_BASE_SPECIFIERS, Record); 4291 4292 // Flush any expressions that were written as part of the base specifiers. 4293 FlushStmts(); 4294 } 4295 4296 CXXBaseSpecifiersToWrite.clear(); 4297 } 4298 4299 void ASTWriter::AddCXXCtorInitializers( 4300 const CXXCtorInitializer * const *CtorInitializers, 4301 unsigned NumCtorInitializers, 4302 RecordDataImpl &Record) { 4303 Record.push_back(NumCtorInitializers); 4304 for (unsigned i=0; i != NumCtorInitializers; ++i) { 4305 const CXXCtorInitializer *Init = CtorInitializers[i]; 4306 4307 if (Init->isBaseInitializer()) { 4308 Record.push_back(CTOR_INITIALIZER_BASE); 4309 AddTypeSourceInfo(Init->getTypeSourceInfo(), Record); 4310 Record.push_back(Init->isBaseVirtual()); 4311 } else if (Init->isDelegatingInitializer()) { 4312 Record.push_back(CTOR_INITIALIZER_DELEGATING); 4313 AddTypeSourceInfo(Init->getTypeSourceInfo(), Record); 4314 } else if (Init->isMemberInitializer()){ 4315 Record.push_back(CTOR_INITIALIZER_MEMBER); 4316 AddDeclRef(Init->getMember(), Record); 4317 } else { 4318 Record.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER); 4319 AddDeclRef(Init->getIndirectMember(), Record); 4320 } 4321 4322 AddSourceLocation(Init->getMemberLocation(), Record); 4323 AddStmt(Init->getInit()); 4324 AddSourceLocation(Init->getLParenLoc(), Record); 4325 AddSourceLocation(Init->getRParenLoc(), Record); 4326 Record.push_back(Init->isWritten()); 4327 if (Init->isWritten()) { 4328 Record.push_back(Init->getSourceOrder()); 4329 } else { 4330 Record.push_back(Init->getNumArrayIndices()); 4331 for (unsigned i=0, e=Init->getNumArrayIndices(); i != e; ++i) 4332 AddDeclRef(Init->getArrayIndex(i), Record); 4333 } 4334 } 4335 } 4336 4337 void ASTWriter::AddCXXDefinitionData(const CXXRecordDecl *D, RecordDataImpl &Record) { 4338 assert(D->DefinitionData); 4339 struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData; 4340 Record.push_back(Data.IsLambda); 4341 Record.push_back(Data.UserDeclaredConstructor); 4342 Record.push_back(Data.UserDeclaredCopyConstructor); 4343 Record.push_back(Data.UserDeclaredMoveConstructor); 4344 Record.push_back(Data.UserDeclaredCopyAssignment); 4345 Record.push_back(Data.UserDeclaredMoveAssignment); 4346 Record.push_back(Data.UserDeclaredDestructor); 4347 Record.push_back(Data.Aggregate); 4348 Record.push_back(Data.PlainOldData); 4349 Record.push_back(Data.Empty); 4350 Record.push_back(Data.Polymorphic); 4351 Record.push_back(Data.Abstract); 4352 Record.push_back(Data.IsStandardLayout); 4353 Record.push_back(Data.HasNoNonEmptyBases); 4354 Record.push_back(Data.HasPrivateFields); 4355 Record.push_back(Data.HasProtectedFields); 4356 Record.push_back(Data.HasPublicFields); 4357 Record.push_back(Data.HasMutableFields); 4358 Record.push_back(Data.HasOnlyCMembers); 4359 Record.push_back(Data.HasInClassInitializer); 4360 Record.push_back(Data.HasTrivialDefaultConstructor); 4361 Record.push_back(Data.HasConstexprNonCopyMoveConstructor); 4362 Record.push_back(Data.DefaultedDefaultConstructorIsConstexpr); 4363 Record.push_back(Data.HasConstexprDefaultConstructor); 4364 Record.push_back(Data.HasTrivialCopyConstructor); 4365 Record.push_back(Data.HasTrivialMoveConstructor); 4366 Record.push_back(Data.HasTrivialCopyAssignment); 4367 Record.push_back(Data.HasTrivialMoveAssignment); 4368 Record.push_back(Data.HasTrivialDestructor); 4369 Record.push_back(Data.HasIrrelevantDestructor); 4370 Record.push_back(Data.HasNonLiteralTypeFieldsOrBases); 4371 Record.push_back(Data.ComputedVisibleConversions); 4372 Record.push_back(Data.UserProvidedDefaultConstructor); 4373 Record.push_back(Data.DeclaredDefaultConstructor); 4374 Record.push_back(Data.DeclaredCopyConstructor); 4375 Record.push_back(Data.DeclaredMoveConstructor); 4376 Record.push_back(Data.DeclaredCopyAssignment); 4377 Record.push_back(Data.DeclaredMoveAssignment); 4378 Record.push_back(Data.DeclaredDestructor); 4379 Record.push_back(Data.FailedImplicitMoveConstructor); 4380 Record.push_back(Data.FailedImplicitMoveAssignment); 4381 // IsLambda bit is already saved. 4382 4383 Record.push_back(Data.NumBases); 4384 if (Data.NumBases > 0) 4385 AddCXXBaseSpecifiersRef(Data.getBases(), Data.getBases() + Data.NumBases, 4386 Record); 4387 4388 // FIXME: Make VBases lazily computed when needed to avoid storing them. 4389 Record.push_back(Data.NumVBases); 4390 if (Data.NumVBases > 0) 4391 AddCXXBaseSpecifiersRef(Data.getVBases(), Data.getVBases() + Data.NumVBases, 4392 Record); 4393 4394 AddUnresolvedSet(Data.Conversions, Record); 4395 AddUnresolvedSet(Data.VisibleConversions, Record); 4396 // Data.Definition is the owning decl, no need to write it. 4397 AddDeclRef(Data.FirstFriend, Record); 4398 4399 // Add lambda-specific data. 4400 if (Data.IsLambda) { 4401 CXXRecordDecl::LambdaDefinitionData &Lambda = D->getLambdaData(); 4402 Record.push_back(Lambda.Dependent); 4403 Record.push_back(Lambda.NumCaptures); 4404 Record.push_back(Lambda.NumExplicitCaptures); 4405 Record.push_back(Lambda.ManglingNumber); 4406 AddDeclRef(Lambda.ContextDecl, Record); 4407 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) { 4408 LambdaExpr::Capture &Capture = Lambda.Captures[I]; 4409 AddSourceLocation(Capture.getLocation(), Record); 4410 Record.push_back(Capture.isImplicit()); 4411 Record.push_back(Capture.getCaptureKind()); // FIXME: stable! 4412 VarDecl *Var = Capture.capturesVariable()? Capture.getCapturedVar() : 0; 4413 AddDeclRef(Var, Record); 4414 AddSourceLocation(Capture.isPackExpansion()? Capture.getEllipsisLoc() 4415 : SourceLocation(), 4416 Record); 4417 } 4418 } 4419 } 4420 4421 void ASTWriter::ReaderInitialized(ASTReader *Reader) { 4422 assert(Reader && "Cannot remove chain"); 4423 assert((!Chain || Chain == Reader) && "Cannot replace chain"); 4424 assert(FirstDeclID == NextDeclID && 4425 FirstTypeID == NextTypeID && 4426 FirstIdentID == NextIdentID && 4427 FirstSubmoduleID == NextSubmoduleID && 4428 FirstSelectorID == NextSelectorID && 4429 "Setting chain after writing has started."); 4430 4431 Chain = Reader; 4432 4433 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls(); 4434 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes(); 4435 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers(); 4436 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules(); 4437 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors(); 4438 NextDeclID = FirstDeclID; 4439 NextTypeID = FirstTypeID; 4440 NextIdentID = FirstIdentID; 4441 NextSelectorID = FirstSelectorID; 4442 NextSubmoduleID = FirstSubmoduleID; 4443 } 4444 4445 void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) { 4446 IdentifierIDs[II] = ID; 4447 if (II->hasMacroDefinition()) 4448 DeserializedMacroNames.push_back(II); 4449 } 4450 4451 void ASTWriter::TypeRead(TypeIdx Idx, QualType T) { 4452 // Always take the highest-numbered type index. This copes with an interesting 4453 // case for chained AST writing where we schedule writing the type and then, 4454 // later, deserialize the type from another AST. In this case, we want to 4455 // keep the higher-numbered entry so that we can properly write it out to 4456 // the AST file. 4457 TypeIdx &StoredIdx = TypeIdxs[T]; 4458 if (Idx.getIndex() >= StoredIdx.getIndex()) 4459 StoredIdx = Idx; 4460 } 4461 4462 void ASTWriter::SelectorRead(SelectorID ID, Selector S) { 4463 SelectorIDs[S] = ID; 4464 } 4465 4466 void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID, 4467 MacroDefinition *MD) { 4468 assert(MacroDefinitions.find(MD) == MacroDefinitions.end()); 4469 MacroDefinitions[MD] = ID; 4470 } 4471 4472 void ASTWriter::MacroVisible(IdentifierInfo *II) { 4473 DeserializedMacroNames.push_back(II); 4474 } 4475 4476 void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) { 4477 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end()); 4478 SubmoduleIDs[Mod] = ID; 4479 } 4480 4481 void ASTWriter::CompletedTagDefinition(const TagDecl *D) { 4482 assert(D->isCompleteDefinition()); 4483 assert(!WritingAST && "Already writing the AST!"); 4484 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) { 4485 // We are interested when a PCH decl is modified. 4486 if (RD->isFromASTFile()) { 4487 // A forward reference was mutated into a definition. Rewrite it. 4488 // FIXME: This happens during template instantiation, should we 4489 // have created a new definition decl instead ? 4490 RewriteDecl(RD); 4491 } 4492 } 4493 } 4494 void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) { 4495 assert(!WritingAST && "Already writing the AST!"); 4496 4497 // TU and namespaces are handled elsewhere. 4498 if (isa<TranslationUnitDecl>(DC) || isa<NamespaceDecl>(DC)) 4499 return; 4500 4501 if (!(!D->isFromASTFile() && cast<Decl>(DC)->isFromASTFile())) 4502 return; // Not a source decl added to a DeclContext from PCH. 4503 4504 AddUpdatedDeclContext(DC); 4505 UpdatingVisibleDecls.push_back(D); 4506 } 4507 4508 void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) { 4509 assert(!WritingAST && "Already writing the AST!"); 4510 assert(D->isImplicit()); 4511 if (!(!D->isFromASTFile() && RD->isFromASTFile())) 4512 return; // Not a source member added to a class from PCH. 4513 if (!isa<CXXMethodDecl>(D)) 4514 return; // We are interested in lazily declared implicit methods. 4515 4516 // A decl coming from PCH was modified. 4517 assert(RD->isCompleteDefinition()); 4518 UpdateRecord &Record = DeclUpdates[RD]; 4519 Record.push_back(UPD_CXX_ADDED_IMPLICIT_MEMBER); 4520 Record.push_back(reinterpret_cast<uint64_t>(D)); 4521 } 4522 4523 void ASTWriter::AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD, 4524 const ClassTemplateSpecializationDecl *D) { 4525 // The specializations set is kept in the canonical template. 4526 assert(!WritingAST && "Already writing the AST!"); 4527 TD = TD->getCanonicalDecl(); 4528 if (!(!D->isFromASTFile() && TD->isFromASTFile())) 4529 return; // Not a source specialization added to a template from PCH. 4530 4531 UpdateRecord &Record = DeclUpdates[TD]; 4532 Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION); 4533 Record.push_back(reinterpret_cast<uint64_t>(D)); 4534 } 4535 4536 void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD, 4537 const FunctionDecl *D) { 4538 // The specializations set is kept in the canonical template. 4539 assert(!WritingAST && "Already writing the AST!"); 4540 TD = TD->getCanonicalDecl(); 4541 if (!(!D->isFromASTFile() && TD->isFromASTFile())) 4542 return; // Not a source specialization added to a template from PCH. 4543 4544 UpdateRecord &Record = DeclUpdates[TD]; 4545 Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION); 4546 Record.push_back(reinterpret_cast<uint64_t>(D)); 4547 } 4548 4549 void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) { 4550 assert(!WritingAST && "Already writing the AST!"); 4551 if (!D->isFromASTFile()) 4552 return; // Declaration not imported from PCH. 4553 4554 // Implicit decl from a PCH was defined. 4555 // FIXME: Should implicit definition be a separate FunctionDecl? 4556 RewriteDecl(D); 4557 } 4558 4559 void ASTWriter::StaticDataMemberInstantiated(const VarDecl *D) { 4560 assert(!WritingAST && "Already writing the AST!"); 4561 if (!D->isFromASTFile()) 4562 return; 4563 4564 // Since the actual instantiation is delayed, this really means that we need 4565 // to update the instantiation location. 4566 UpdateRecord &Record = DeclUpdates[D]; 4567 Record.push_back(UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER); 4568 AddSourceLocation( 4569 D->getMemberSpecializationInfo()->getPointOfInstantiation(), Record); 4570 } 4571 4572 void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD, 4573 const ObjCInterfaceDecl *IFD) { 4574 assert(!WritingAST && "Already writing the AST!"); 4575 if (!IFD->isFromASTFile()) 4576 return; // Declaration not imported from PCH. 4577 4578 assert(IFD->getDefinition() && "Category on a class without a definition?"); 4579 ObjCClassesWithCategories.insert( 4580 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition())); 4581 } 4582 4583 4584 void ASTWriter::AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop, 4585 const ObjCPropertyDecl *OrigProp, 4586 const ObjCCategoryDecl *ClassExt) { 4587 const ObjCInterfaceDecl *D = ClassExt->getClassInterface(); 4588 if (!D) 4589 return; 4590 4591 assert(!WritingAST && "Already writing the AST!"); 4592 if (!D->isFromASTFile()) 4593 return; // Declaration not imported from PCH. 4594 4595 RewriteDecl(D); 4596 } 4597
