ASTWriterDecl.cpp revision 218893
1//===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements serialization for Declarations. 11// 12//===----------------------------------------------------------------------===// 13 14#include "clang/Serialization/ASTWriter.h" 15#include "clang/AST/DeclVisitor.h" 16#include "clang/AST/DeclCXX.h" 17#include "clang/AST/DeclTemplate.h" 18#include "clang/AST/Expr.h" 19#include "clang/AST/DeclContextInternals.h" 20#include "llvm/ADT/Twine.h" 21#include "llvm/Bitcode/BitstreamWriter.h" 22#include "llvm/Support/ErrorHandling.h" 23using namespace clang; 24 25//===----------------------------------------------------------------------===// 26// Declaration serialization 27//===----------------------------------------------------------------------===// 28 29namespace clang { 30 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 31 32 ASTWriter &Writer; 33 ASTContext &Context; 34 typedef ASTWriter::RecordData RecordData; 35 RecordData &Record; 36 37 public: 38 serialization::DeclCode Code; 39 unsigned AbbrevToUse; 40 41 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, RecordData &Record) 42 : Writer(Writer), Context(Context), Record(Record) { 43 } 44 45 void Visit(Decl *D); 46 47 void VisitDecl(Decl *D); 48 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 49 void VisitNamedDecl(NamedDecl *D); 50 void VisitLabelDecl(LabelDecl *LD); 51 void VisitNamespaceDecl(NamespaceDecl *D); 52 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 53 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 54 void VisitTypeDecl(TypeDecl *D); 55 void VisitTypedefDecl(TypedefDecl *D); 56 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 57 void VisitTagDecl(TagDecl *D); 58 void VisitEnumDecl(EnumDecl *D); 59 void VisitRecordDecl(RecordDecl *D); 60 void VisitCXXRecordDecl(CXXRecordDecl *D); 61 void VisitClassTemplateSpecializationDecl( 62 ClassTemplateSpecializationDecl *D); 63 void VisitClassTemplatePartialSpecializationDecl( 64 ClassTemplatePartialSpecializationDecl *D); 65 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 66 void VisitValueDecl(ValueDecl *D); 67 void VisitEnumConstantDecl(EnumConstantDecl *D); 68 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 69 void VisitDeclaratorDecl(DeclaratorDecl *D); 70 void VisitFunctionDecl(FunctionDecl *D); 71 void VisitCXXMethodDecl(CXXMethodDecl *D); 72 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 73 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 74 void VisitCXXConversionDecl(CXXConversionDecl *D); 75 void VisitFieldDecl(FieldDecl *D); 76 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 77 void VisitVarDecl(VarDecl *D); 78 void VisitImplicitParamDecl(ImplicitParamDecl *D); 79 void VisitParmVarDecl(ParmVarDecl *D); 80 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 81 void VisitTemplateDecl(TemplateDecl *D); 82 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 83 void VisitClassTemplateDecl(ClassTemplateDecl *D); 84 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 85 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 86 void VisitUsingDecl(UsingDecl *D); 87 void VisitUsingShadowDecl(UsingShadowDecl *D); 88 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 89 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 90 void VisitAccessSpecDecl(AccessSpecDecl *D); 91 void VisitFriendDecl(FriendDecl *D); 92 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 93 void VisitStaticAssertDecl(StaticAssertDecl *D); 94 void VisitBlockDecl(BlockDecl *D); 95 96 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 97 uint64_t VisibleOffset); 98 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 99 100 101 // FIXME: Put in the same order is DeclNodes.td? 102 void VisitObjCMethodDecl(ObjCMethodDecl *D); 103 void VisitObjCContainerDecl(ObjCContainerDecl *D); 104 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 105 void VisitObjCIvarDecl(ObjCIvarDecl *D); 106 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 107 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 108 void VisitObjCClassDecl(ObjCClassDecl *D); 109 void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 110 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 111 void VisitObjCImplDecl(ObjCImplDecl *D); 112 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 113 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 114 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 115 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 116 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 117 }; 118} 119 120void ASTDeclWriter::Visit(Decl *D) { 121 DeclVisitor<ASTDeclWriter>::Visit(D); 122 123 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 124 // have been written. We want it last because we will not read it back when 125 // retrieving it from the AST, we'll just lazily set the offset. 126 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 127 Record.push_back(FD->isThisDeclarationADefinition()); 128 if (FD->isThisDeclarationADefinition()) 129 Writer.AddStmt(FD->getBody()); 130 } 131} 132 133void ASTDeclWriter::VisitDecl(Decl *D) { 134 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 135 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 136 Writer.AddSourceLocation(D->getLocation(), Record); 137 Record.push_back(D->isInvalidDecl()); 138 Record.push_back(D->hasAttrs()); 139 if (D->hasAttrs()) 140 Writer.WriteAttributes(D->getAttrs(), Record); 141 Record.push_back(D->isImplicit()); 142 Record.push_back(D->isUsed(false)); 143 Record.push_back(D->getAccess()); 144 Record.push_back(D->getPCHLevel()); 145} 146 147void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 148 VisitDecl(D); 149 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 150 Code = serialization::DECL_TRANSLATION_UNIT; 151} 152 153void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 154 VisitDecl(D); 155 Writer.AddDeclarationName(D->getDeclName(), Record); 156} 157 158void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 159 VisitNamedDecl(D); 160 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 161} 162 163void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 164 VisitTypeDecl(D); 165 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 166 Code = serialization::DECL_TYPEDEF; 167} 168 169void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 170 VisitTypeDecl(D); 171 VisitRedeclarable(D); 172 Record.push_back(D->getIdentifierNamespace()); 173 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 174 Record.push_back(D->isDefinition()); 175 Record.push_back(D->isEmbeddedInDeclarator()); 176 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 177 Writer.AddSourceLocation(D->getTagKeywordLoc(), Record); 178 Record.push_back(D->hasExtInfo()); 179 if (D->hasExtInfo()) 180 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 181 else 182 Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record); 183} 184 185void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 186 VisitTagDecl(D); 187 Writer.AddTypeSourceInfo(D->getIntegerTypeSourceInfo(), Record); 188 if (!D->getIntegerTypeSourceInfo()) 189 Writer.AddTypeRef(D->getIntegerType(), Record); 190 Writer.AddTypeRef(D->getPromotionType(), Record); 191 Record.push_back(D->getNumPositiveBits()); 192 Record.push_back(D->getNumNegativeBits()); 193 Record.push_back(D->isScoped()); 194 Record.push_back(D->isScopedUsingClassTag()); 195 Record.push_back(D->isFixed()); 196 Writer.AddDeclRef(D->getInstantiatedFromMemberEnum(), Record); 197 Code = serialization::DECL_ENUM; 198} 199 200void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 201 VisitTagDecl(D); 202 Record.push_back(D->hasFlexibleArrayMember()); 203 Record.push_back(D->isAnonymousStructOrUnion()); 204 Record.push_back(D->hasObjectMember()); 205 Code = serialization::DECL_RECORD; 206} 207 208void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 209 VisitNamedDecl(D); 210 Writer.AddTypeRef(D->getType(), Record); 211} 212 213void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 214 VisitValueDecl(D); 215 Record.push_back(D->getInitExpr()? 1 : 0); 216 if (D->getInitExpr()) 217 Writer.AddStmt(D->getInitExpr()); 218 Writer.AddAPSInt(D->getInitVal(), Record); 219 Code = serialization::DECL_ENUM_CONSTANT; 220} 221 222void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 223 VisitValueDecl(D); 224 Record.push_back(D->hasExtInfo()); 225 if (D->hasExtInfo()) 226 Writer.AddQualifierInfo(*D->getExtInfo(), Record); 227 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 228} 229 230void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 231 VisitDeclaratorDecl(D); 232 VisitRedeclarable(D); 233 234 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 235 Record.push_back(D->getIdentifierNamespace()); 236 Record.push_back(D->getTemplatedKind()); 237 switch (D->getTemplatedKind()) { 238 default: assert(false && "Unhandled TemplatedKind!"); 239 break; 240 case FunctionDecl::TK_NonTemplate: 241 break; 242 case FunctionDecl::TK_FunctionTemplate: 243 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); 244 break; 245 case FunctionDecl::TK_MemberSpecialization: { 246 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 247 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 248 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 249 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 250 break; 251 } 252 case FunctionDecl::TK_FunctionTemplateSpecialization: { 253 FunctionTemplateSpecializationInfo * 254 FTSInfo = D->getTemplateSpecializationInfo(); 255 Writer.AddDeclRef(FTSInfo->getTemplate(), Record); 256 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 257 258 // Template arguments. 259 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); 260 261 // Template args as written. 262 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != 0); 263 if (FTSInfo->TemplateArgumentsAsWritten) { 264 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->size()); 265 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->size(); i!=e; ++i) 266 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], 267 Record); 268 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getLAngleLoc(), 269 Record); 270 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getRAngleLoc(), 271 Record); 272 } 273 274 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); 275 276 if (D->isCanonicalDecl()) { 277 // Write the template that contains the specializations set. We will 278 // add a FunctionTemplateSpecializationInfo to it when reading. 279 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); 280 } 281 break; 282 } 283 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 284 DependentFunctionTemplateSpecializationInfo * 285 DFTSInfo = D->getDependentSpecializationInfo(); 286 287 // Templates. 288 Record.push_back(DFTSInfo->getNumTemplates()); 289 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 290 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); 291 292 // Templates args. 293 Record.push_back(DFTSInfo->getNumTemplateArgs()); 294 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 295 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); 296 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); 297 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); 298 break; 299 } 300 } 301 302 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 303 // after everything else is written. 304 305 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 306 Record.push_back(D->getStorageClassAsWritten()); 307 Record.push_back(D->IsInline); 308 Record.push_back(D->isInlineSpecified()); 309 Record.push_back(D->isVirtualAsWritten()); 310 Record.push_back(D->isPure()); 311 Record.push_back(D->hasInheritedPrototype()); 312 Record.push_back(D->hasWrittenPrototype()); 313 Record.push_back(D->isDeleted()); 314 Record.push_back(D->isTrivial()); 315 Record.push_back(D->hasImplicitReturnZero()); 316 Writer.AddSourceLocation(D->getLocEnd(), Record); 317 318 Record.push_back(D->param_size()); 319 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 320 P != PEnd; ++P) 321 Writer.AddDeclRef(*P, Record); 322 Code = serialization::DECL_FUNCTION; 323} 324 325void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 326 VisitNamedDecl(D); 327 // FIXME: convert to LazyStmtPtr? 328 // Unlike C/C++, method bodies will never be in header files. 329 bool HasBodyStuff = D->getBody() != 0 || 330 D->getSelfDecl() != 0 || D->getCmdDecl() != 0; 331 Record.push_back(HasBodyStuff); 332 if (HasBodyStuff) { 333 Writer.AddStmt(D->getBody()); 334 Writer.AddDeclRef(D->getSelfDecl(), Record); 335 Writer.AddDeclRef(D->getCmdDecl(), Record); 336 } 337 Record.push_back(D->isInstanceMethod()); 338 Record.push_back(D->isVariadic()); 339 Record.push_back(D->isSynthesized()); 340 Record.push_back(D->isDefined()); 341 // FIXME: stable encoding for @required/@optional 342 Record.push_back(D->getImplementationControl()); 343 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway 344 Record.push_back(D->getObjCDeclQualifier()); 345 Record.push_back(D->getNumSelectorArgs()); 346 Writer.AddTypeRef(D->getResultType(), Record); 347 Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record); 348 Writer.AddSourceLocation(D->getLocEnd(), Record); 349 Record.push_back(D->param_size()); 350 for (ObjCMethodDecl::param_iterator P = D->param_begin(), 351 PEnd = D->param_end(); P != PEnd; ++P) 352 Writer.AddDeclRef(*P, Record); 353 Code = serialization::DECL_OBJC_METHOD; 354} 355 356void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 357 VisitNamedDecl(D); 358 Writer.AddSourceRange(D->getAtEndRange(), Record); 359 // Abstract class (no need to define a stable serialization::DECL code). 360} 361 362void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 363 VisitObjCContainerDecl(D); 364 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 365 Writer.AddDeclRef(D->getSuperClass(), Record); 366 367 // Write out the protocols that are directly referenced by the @interface. 368 Record.push_back(D->ReferencedProtocols.size()); 369 for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), 370 PEnd = D->protocol_end(); 371 P != PEnd; ++P) 372 Writer.AddDeclRef(*P, Record); 373 for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 374 PLEnd = D->protocol_loc_end(); 375 PL != PLEnd; ++PL) 376 Writer.AddSourceLocation(*PL, Record); 377 378 // Write out the protocols that are transitively referenced. 379 Record.push_back(D->AllReferencedProtocols.size()); 380 for (ObjCList<ObjCProtocolDecl>::iterator 381 P = D->AllReferencedProtocols.begin(), 382 PEnd = D->AllReferencedProtocols.end(); 383 P != PEnd; ++P) 384 Writer.AddDeclRef(*P, Record); 385 386 // Write out the ivars. 387 Record.push_back(D->ivar_size()); 388 for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), 389 IEnd = D->ivar_end(); I != IEnd; ++I) 390 Writer.AddDeclRef(*I, Record); 391 Writer.AddDeclRef(D->getCategoryList(), Record); 392 Record.push_back(D->isForwardDecl()); 393 Record.push_back(D->isImplicitInterfaceDecl()); 394 Writer.AddSourceLocation(D->getClassLoc(), Record); 395 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 396 Writer.AddSourceLocation(D->getLocEnd(), Record); 397 Code = serialization::DECL_OBJC_INTERFACE; 398} 399 400void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 401 VisitFieldDecl(D); 402 // FIXME: stable encoding for @public/@private/@protected/@package 403 Record.push_back(D->getAccessControl()); 404 Record.push_back(D->getSynthesize()); 405 Code = serialization::DECL_OBJC_IVAR; 406} 407 408void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 409 VisitObjCContainerDecl(D); 410 Record.push_back(D->isForwardDecl()); 411 Writer.AddSourceLocation(D->getLocEnd(), Record); 412 Record.push_back(D->protocol_size()); 413 for (ObjCProtocolDecl::protocol_iterator 414 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 415 Writer.AddDeclRef(*I, Record); 416 for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 417 PLEnd = D->protocol_loc_end(); 418 PL != PLEnd; ++PL) 419 Writer.AddSourceLocation(*PL, Record); 420 Code = serialization::DECL_OBJC_PROTOCOL; 421} 422 423void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 424 VisitFieldDecl(D); 425 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 426} 427 428void ASTDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) { 429 VisitDecl(D); 430 Record.push_back(D->size()); 431 for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) 432 Writer.AddDeclRef(I->getInterface(), Record); 433 for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) 434 Writer.AddSourceLocation(I->getLocation(), Record); 435 Code = serialization::DECL_OBJC_CLASS; 436} 437 438void ASTDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 439 VisitDecl(D); 440 Record.push_back(D->protocol_size()); 441 for (ObjCForwardProtocolDecl::protocol_iterator 442 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 443 Writer.AddDeclRef(*I, Record); 444 for (ObjCForwardProtocolDecl::protocol_loc_iterator 445 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 446 PL != PLEnd; ++PL) 447 Writer.AddSourceLocation(*PL, Record); 448 Code = serialization::DECL_OBJC_FORWARD_PROTOCOL; 449} 450 451void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 452 VisitObjCContainerDecl(D); 453 Writer.AddDeclRef(D->getClassInterface(), Record); 454 Record.push_back(D->protocol_size()); 455 for (ObjCCategoryDecl::protocol_iterator 456 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 457 Writer.AddDeclRef(*I, Record); 458 for (ObjCCategoryDecl::protocol_loc_iterator 459 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 460 PL != PLEnd; ++PL) 461 Writer.AddSourceLocation(*PL, Record); 462 Writer.AddDeclRef(D->getNextClassCategory(), Record); 463 Record.push_back(D->hasSynthBitfield()); 464 Writer.AddSourceLocation(D->getAtLoc(), Record); 465 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 466 Code = serialization::DECL_OBJC_CATEGORY; 467} 468 469void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 470 VisitNamedDecl(D); 471 Writer.AddDeclRef(D->getClassInterface(), Record); 472 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 473} 474 475void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 476 VisitNamedDecl(D); 477 Writer.AddSourceLocation(D->getAtLoc(), Record); 478 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 479 // FIXME: stable encoding 480 Record.push_back((unsigned)D->getPropertyAttributes()); 481 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 482 // FIXME: stable encoding 483 Record.push_back((unsigned)D->getPropertyImplementation()); 484 Writer.AddDeclarationName(D->getGetterName(), Record); 485 Writer.AddDeclarationName(D->getSetterName(), Record); 486 Writer.AddDeclRef(D->getGetterMethodDecl(), Record); 487 Writer.AddDeclRef(D->getSetterMethodDecl(), Record); 488 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 489 Code = serialization::DECL_OBJC_PROPERTY; 490} 491 492void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 493 VisitObjCContainerDecl(D); 494 Writer.AddDeclRef(D->getClassInterface(), Record); 495 // Abstract class (no need to define a stable serialization::DECL code). 496} 497 498void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 499 VisitObjCImplDecl(D); 500 Writer.AddIdentifierRef(D->getIdentifier(), Record); 501 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 502} 503 504void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 505 VisitObjCImplDecl(D); 506 Writer.AddDeclRef(D->getSuperClass(), Record); 507 Writer.AddCXXCtorInitializers(D->IvarInitializers, D->NumIvarInitializers, 508 Record); 509 Record.push_back(D->hasSynthBitfield()); 510 Code = serialization::DECL_OBJC_IMPLEMENTATION; 511} 512 513void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 514 VisitDecl(D); 515 Writer.AddSourceLocation(D->getLocStart(), Record); 516 Writer.AddDeclRef(D->getPropertyDecl(), Record); 517 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 518 Writer.AddSourceLocation(D->getPropertyIvarDeclLoc(), Record); 519 Writer.AddStmt(D->getGetterCXXConstructor()); 520 Writer.AddStmt(D->getSetterCXXAssignment()); 521 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 522} 523 524void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 525 VisitDeclaratorDecl(D); 526 Record.push_back(D->isMutable()); 527 Record.push_back(D->getBitWidth()? 1 : 0); 528 if (D->getBitWidth()) 529 Writer.AddStmt(D->getBitWidth()); 530 if (!D->getDeclName()) 531 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); 532 Code = serialization::DECL_FIELD; 533} 534 535void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 536 VisitValueDecl(D); 537 Record.push_back(D->getChainingSize()); 538 539 for (IndirectFieldDecl::chain_iterator 540 P = D->chain_begin(), 541 PEnd = D->chain_end(); P != PEnd; ++P) 542 Writer.AddDeclRef(*P, Record); 543 Code = serialization::DECL_INDIRECTFIELD; 544} 545 546void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 547 VisitDeclaratorDecl(D); 548 VisitRedeclarable(D); 549 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 550 Record.push_back(D->getStorageClassAsWritten()); 551 Record.push_back(D->isThreadSpecified()); 552 Record.push_back(D->hasCXXDirectInitializer()); 553 Record.push_back(D->isExceptionVariable()); 554 Record.push_back(D->isNRVOVariable()); 555 Record.push_back(D->getInit() ? 1 : 0); 556 if (D->getInit()) 557 Writer.AddStmt(D->getInit()); 558 559 MemberSpecializationInfo *SpecInfo 560 = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0; 561 Record.push_back(SpecInfo != 0); 562 if (SpecInfo) { 563 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); 564 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 565 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); 566 } 567 568 Code = serialization::DECL_VAR; 569} 570 571void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 572 VisitVarDecl(D); 573 Code = serialization::DECL_IMPLICIT_PARAM; 574} 575 576void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 577 VisitVarDecl(D); 578 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 579 Record.push_back(D->hasInheritedDefaultArg()); 580 Record.push_back(D->hasUninstantiatedDefaultArg()); 581 if (D->hasUninstantiatedDefaultArg()) 582 Writer.AddStmt(D->getUninstantiatedDefaultArg()); 583 Code = serialization::DECL_PARM_VAR; 584 585 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 586 // we dynamically check for the properties that we optimize for, but don't 587 // know are true of all PARM_VAR_DECLs. 588 if (!D->getTypeSourceInfo() && 589 !D->hasAttrs() && 590 !D->isImplicit() && 591 !D->isUsed(false) && 592 D->getAccess() == AS_none && 593 D->getPCHLevel() == 0 && 594 D->getStorageClass() == 0 && 595 !D->hasCXXDirectInitializer() && // Can params have this ever? 596 D->getObjCDeclQualifier() == 0 && 597 !D->hasInheritedDefaultArg() && 598 D->getInit() == 0 && 599 !D->hasUninstantiatedDefaultArg()) // No default expr. 600 AbbrevToUse = Writer.getParmVarDeclAbbrev(); 601 602 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 603 // just us assuming it. 604 assert(!D->isInvalidDecl() && "Shouldn't emit invalid decls"); 605 assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread"); 606 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 607 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 608 assert(D->getPreviousDeclaration() == 0 && "PARM_VAR_DECL can't be redecl"); 609 assert(!D->isStaticDataMember() && 610 "PARM_VAR_DECL can't be static data member"); 611} 612 613void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 614 VisitDecl(D); 615 Writer.AddStmt(D->getAsmString()); 616 Code = serialization::DECL_FILE_SCOPE_ASM; 617} 618 619void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 620 VisitDecl(D); 621 Writer.AddStmt(D->getBody()); 622 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); 623 Record.push_back(D->param_size()); 624 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 625 P != PEnd; ++P) 626 Writer.AddDeclRef(*P, Record); 627 Record.push_back(D->capturesCXXThis()); 628 Record.push_back(D->getNumCaptures()); 629 for (BlockDecl::capture_iterator 630 i = D->capture_begin(), e = D->capture_end(); i != e; ++i) { 631 const BlockDecl::Capture &capture = *i; 632 Writer.AddDeclRef(capture.getVariable(), Record); 633 634 unsigned flags = 0; 635 if (capture.isByRef()) flags |= 1; 636 if (capture.isNested()) flags |= 2; 637 if (capture.hasCopyExpr()) flags |= 4; 638 Record.push_back(flags); 639 640 if (capture.hasCopyExpr()) Writer.AddStmt(capture.getCopyExpr()); 641 } 642 643 Code = serialization::DECL_BLOCK; 644} 645 646void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 647 VisitDecl(D); 648 // FIXME: It might be nice to serialize the brace locations for this 649 // declaration, which don't seem to be readily available in the AST. 650 Record.push_back(D->getLanguage()); 651 Record.push_back(D->hasBraces()); 652 Code = serialization::DECL_LINKAGE_SPEC; 653} 654 655void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 656 VisitNamedDecl(D); 657 Code = serialization::DECL_LABEL; 658} 659 660 661void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 662 VisitNamedDecl(D); 663 Record.push_back(D->isInline()); 664 Writer.AddSourceLocation(D->getLBracLoc(), Record); 665 Writer.AddSourceLocation(D->getRBracLoc(), Record); 666 Writer.AddDeclRef(D->getNextNamespace(), Record); 667 668 // Only write one reference--original or anonymous 669 Record.push_back(D->isOriginalNamespace()); 670 if (D->isOriginalNamespace()) 671 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 672 else 673 Writer.AddDeclRef(D->getOriginalNamespace(), Record); 674 Code = serialization::DECL_NAMESPACE; 675 676 if (Writer.hasChain() && !D->isOriginalNamespace() && 677 D->getOriginalNamespace()->getPCHLevel() > 0) { 678 NamespaceDecl *NS = D->getOriginalNamespace(); 679 Writer.AddUpdatedDeclContext(NS); 680 681 // Make sure all visible decls are written. They will be recorded later. 682 NS->lookup(DeclarationName()); 683 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(NS->getLookupPtr()); 684 if (Map) { 685 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 686 D != DEnd; ++D) { 687 DeclContext::lookup_result Result = D->second.getLookupResult(); 688 while (Result.first != Result.second) { 689 Writer.GetDeclRef(*Result.first); 690 ++Result.first; 691 } 692 } 693 } 694 } 695} 696 697void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 698 VisitNamedDecl(D); 699 Writer.AddSourceLocation(D->getNamespaceLoc(), Record); 700 Writer.AddSourceRange(D->getQualifierRange(), Record); 701 Writer.AddNestedNameSpecifier(D->getQualifier(), Record); 702 Writer.AddSourceLocation(D->getTargetNameLoc(), Record); 703 Writer.AddDeclRef(D->getNamespace(), Record); 704 Code = serialization::DECL_NAMESPACE_ALIAS; 705} 706 707void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 708 VisitNamedDecl(D); 709 Writer.AddSourceRange(D->getNestedNameRange(), Record); 710 Writer.AddSourceLocation(D->getUsingLocation(), Record); 711 Writer.AddNestedNameSpecifier(D->getTargetNestedNameDecl(), Record); 712 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 713 Writer.AddDeclRef(D->FirstUsingShadow, Record); 714 Record.push_back(D->isTypeName()); 715 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); 716 Code = serialization::DECL_USING; 717} 718 719void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 720 VisitNamedDecl(D); 721 Writer.AddDeclRef(D->getTargetDecl(), Record); 722 Writer.AddDeclRef(D->UsingOrNextShadow, Record); 723 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); 724 Code = serialization::DECL_USING_SHADOW; 725} 726 727void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 728 VisitNamedDecl(D); 729 Writer.AddSourceLocation(D->getUsingLoc(), Record); 730 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); 731 Writer.AddSourceRange(D->getQualifierRange(), Record); 732 Writer.AddNestedNameSpecifier(D->getQualifier(), Record); 733 Writer.AddDeclRef(D->getNominatedNamespace(), Record); 734 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); 735 Code = serialization::DECL_USING_DIRECTIVE; 736} 737 738void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 739 VisitValueDecl(D); 740 Writer.AddSourceRange(D->getTargetNestedNameRange(), Record); 741 Writer.AddSourceLocation(D->getUsingLoc(), Record); 742 Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record); 743 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record); 744 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 745} 746 747void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 748 UnresolvedUsingTypenameDecl *D) { 749 VisitTypeDecl(D); 750 Writer.AddSourceRange(D->getTargetNestedNameRange(), Record); 751 Writer.AddSourceLocation(D->getUsingLoc(), Record); 752 Writer.AddSourceLocation(D->getTypenameLoc(), Record); 753 Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record); 754 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 755} 756 757void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 758 VisitRecordDecl(D); 759 760 CXXRecordDecl *DefinitionDecl = 0; 761 if (D->DefinitionData) 762 DefinitionDecl = D->DefinitionData->Definition; 763 Writer.AddDeclRef(DefinitionDecl, Record); 764 if (D == DefinitionDecl) 765 Writer.AddCXXDefinitionData(D, Record); 766 767 enum { 768 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 769 }; 770 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 771 Record.push_back(CXXRecTemplate); 772 Writer.AddDeclRef(TemplD, Record); 773 } else if (MemberSpecializationInfo *MSInfo 774 = D->getMemberSpecializationInfo()) { 775 Record.push_back(CXXRecMemberSpecialization); 776 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); 777 Record.push_back(MSInfo->getTemplateSpecializationKind()); 778 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); 779 } else { 780 Record.push_back(CXXRecNotTemplate); 781 } 782 783 // Store the key function to avoid deserializing every method so we can 784 // compute it. 785 if (D->IsDefinition) 786 Writer.AddDeclRef(Context.getKeyFunction(D), Record); 787 788 Code = serialization::DECL_CXX_RECORD; 789} 790 791void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 792 VisitFunctionDecl(D); 793 Record.push_back(D->size_overridden_methods()); 794 for (CXXMethodDecl::method_iterator 795 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 796 I != E; ++I) 797 Writer.AddDeclRef(*I, Record); 798 Code = serialization::DECL_CXX_METHOD; 799} 800 801void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 802 VisitCXXMethodDecl(D); 803 804 Record.push_back(D->IsExplicitSpecified); 805 Record.push_back(D->ImplicitlyDefined); 806 Writer.AddCXXCtorInitializers(D->CtorInitializers, D->NumCtorInitializers, 807 Record); 808 809 Code = serialization::DECL_CXX_CONSTRUCTOR; 810} 811 812void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 813 VisitCXXMethodDecl(D); 814 815 Record.push_back(D->ImplicitlyDefined); 816 Writer.AddDeclRef(D->OperatorDelete, Record); 817 818 Code = serialization::DECL_CXX_DESTRUCTOR; 819} 820 821void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 822 VisitCXXMethodDecl(D); 823 Record.push_back(D->IsExplicitSpecified); 824 Code = serialization::DECL_CXX_CONVERSION; 825} 826 827void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 828 VisitDecl(D); 829 Writer.AddSourceLocation(D->getColonLoc(), Record); 830 Code = serialization::DECL_ACCESS_SPEC; 831} 832 833void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 834 VisitDecl(D); 835 Record.push_back(D->Friend.is<TypeSourceInfo*>()); 836 if (D->Friend.is<TypeSourceInfo*>()) 837 Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record); 838 else 839 Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record); 840 Writer.AddDeclRef(D->getNextFriend(), Record); 841 Record.push_back(D->UnsupportedFriend); 842 Writer.AddSourceLocation(D->FriendLoc, Record); 843 Code = serialization::DECL_FRIEND; 844} 845 846void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 847 VisitDecl(D); 848 Record.push_back(D->getNumTemplateParameters()); 849 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 850 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record); 851 Record.push_back(D->getFriendDecl() != 0); 852 if (D->getFriendDecl()) 853 Writer.AddDeclRef(D->getFriendDecl(), Record); 854 else 855 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 856 Writer.AddSourceLocation(D->getFriendLoc(), Record); 857 Code = serialization::DECL_FRIEND_TEMPLATE; 858} 859 860void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 861 VisitNamedDecl(D); 862 863 Writer.AddDeclRef(D->getTemplatedDecl(), Record); 864 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 865} 866 867void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 868 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 869 // getCommonPtr() can be used while this is still initializing. 870 871 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 872 if (D->getPreviousDeclaration()) 873 Writer.AddDeclRef(D->getFirstDeclaration(), Record); 874 875 if (D->getPreviousDeclaration() == 0) { 876 // This TemplateDecl owns the CommonPtr; write it. 877 assert(D->isCanonicalDecl()); 878 879 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); 880 if (D->getInstantiatedFromMemberTemplate()) 881 Record.push_back(D->isMemberSpecialization()); 882 883 Writer.AddDeclRef(D->getCommonPtr()->Latest, Record); 884 } else { 885 RedeclarableTemplateDecl *First = D->getFirstDeclaration(); 886 assert(First != D); 887 // If this is a most recent redeclaration that is pointed to by a first decl 888 // in a chained PCH, keep track of the association with the map so we can 889 // update the first decl during AST reading. 890 if (First->getMostRecentDeclaration() == D && 891 First->getPCHLevel() > D->getPCHLevel()) { 892 assert(Writer.FirstLatestDecls.find(First)==Writer.FirstLatestDecls.end() 893 && "The latest is already set"); 894 Writer.FirstLatestDecls[First] = D; 895 } 896 } 897 898 VisitTemplateDecl(D); 899 Record.push_back(D->getIdentifierNamespace()); 900} 901 902void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 903 VisitRedeclarableTemplateDecl(D); 904 905 if (D->getPreviousDeclaration() == 0) { 906 typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy; 907 CTSDSetTy &CTSDSet = D->getSpecializations(); 908 Record.push_back(CTSDSet.size()); 909 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) { 910 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 911 Writer.AddDeclRef(&*I, Record); 912 } 913 914 typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy; 915 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations(); 916 Record.push_back(CTPSDSet.size()); 917 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) { 918 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 919 Writer.AddDeclRef(&*I, Record); 920 } 921 922 // InjectedClassNameType is computed, no need to write it. 923 } 924 Code = serialization::DECL_CLASS_TEMPLATE; 925} 926 927void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 928 ClassTemplateSpecializationDecl *D) { 929 VisitCXXRecordDecl(D); 930 931 llvm::PointerUnion<ClassTemplateDecl *, 932 ClassTemplatePartialSpecializationDecl *> InstFrom 933 = D->getSpecializedTemplateOrPartial(); 934 Decl *InstFromD; 935 if (InstFrom.is<ClassTemplateDecl *>()) { 936 InstFromD = InstFrom.get<ClassTemplateDecl *>(); 937 Writer.AddDeclRef(InstFromD, Record); 938 } else { 939 InstFromD = InstFrom.get<ClassTemplatePartialSpecializationDecl *>(); 940 Writer.AddDeclRef(InstFromD, Record); 941 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 942 InstFromD = cast<ClassTemplatePartialSpecializationDecl>(InstFromD)-> 943 getSpecializedTemplate(); 944 } 945 946 // Explicit info. 947 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 948 if (D->getTypeAsWritten()) { 949 Writer.AddSourceLocation(D->getExternLoc(), Record); 950 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 951 } 952 953 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 954 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 955 Record.push_back(D->getSpecializationKind()); 956 957 if (D->isCanonicalDecl()) { 958 // When reading, we'll add it to the folding set of the following template. 959 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 960 } 961 962 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 963} 964 965void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 966 ClassTemplatePartialSpecializationDecl *D) { 967 VisitClassTemplateSpecializationDecl(D); 968 969 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 970 971 Record.push_back(D->getNumTemplateArgsAsWritten()); 972 for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i) 973 Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record); 974 975 Record.push_back(D->getSequenceNumber()); 976 977 // These are read/set from/to the first declaration. 978 if (D->getPreviousDeclaration() == 0) { 979 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 980 Record.push_back(D->isMemberSpecialization()); 981 } 982 983 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 984} 985 986void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 987 VisitRedeclarableTemplateDecl(D); 988 989 if (D->getPreviousDeclaration() == 0) { 990 // This FunctionTemplateDecl owns the CommonPtr; write it. 991 992 // Write the function specialization declarations. 993 Record.push_back(D->getSpecializations().size()); 994 for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator 995 I = D->getSpecializations().begin(), 996 E = D->getSpecializations().end() ; I != E; ++I) { 997 assert(I->Function->isCanonicalDecl() && 998 "Expected only canonical decls in set"); 999 Writer.AddDeclRef(I->Function, Record); 1000 } 1001 } 1002 Code = serialization::DECL_FUNCTION_TEMPLATE; 1003} 1004 1005void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1006 VisitTypeDecl(D); 1007 1008 Record.push_back(D->wasDeclaredWithTypename()); 1009 Record.push_back(D->isParameterPack()); 1010 Record.push_back(D->defaultArgumentWasInherited()); 1011 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 1012 1013 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1014} 1015 1016void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1017 // For an expanded parameter pack, record the number of expansion types here 1018 // so that it's easier for 1019 if (D->isExpandedParameterPack()) 1020 Record.push_back(D->getNumExpansionTypes()); 1021 1022 VisitDeclaratorDecl(D); 1023 // TemplateParmPosition. 1024 Record.push_back(D->getDepth()); 1025 Record.push_back(D->getPosition()); 1026 1027 if (D->isExpandedParameterPack()) { 1028 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1029 Writer.AddTypeRef(D->getExpansionType(I), Record); 1030 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record); 1031 } 1032 1033 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1034 } else { 1035 // Rest of NonTypeTemplateParmDecl. 1036 Record.push_back(D->isParameterPack()); 1037 Record.push_back(D->getDefaultArgument() != 0); 1038 if (D->getDefaultArgument()) { 1039 Writer.AddStmt(D->getDefaultArgument()); 1040 Record.push_back(D->defaultArgumentWasInherited()); 1041 } 1042 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1043 } 1044} 1045 1046void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1047 VisitTemplateDecl(D); 1048 // TemplateParmPosition. 1049 Record.push_back(D->getDepth()); 1050 Record.push_back(D->getPosition()); 1051 // Rest of TemplateTemplateParmDecl. 1052 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1053 Record.push_back(D->defaultArgumentWasInherited()); 1054 Record.push_back(D->isParameterPack()); 1055 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1056} 1057 1058void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1059 VisitDecl(D); 1060 Writer.AddStmt(D->getAssertExpr()); 1061 Writer.AddStmt(D->getMessage()); 1062 Code = serialization::DECL_STATIC_ASSERT; 1063} 1064 1065/// \brief Emit the DeclContext part of a declaration context decl. 1066/// 1067/// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1068/// block for this declaration context is stored. May be 0 to indicate 1069/// that there are no declarations stored within this context. 1070/// 1071/// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1072/// block for this declaration context is stored. May be 0 to indicate 1073/// that there are no declarations visible from this context. Note 1074/// that this value will not be emitted for non-primary declaration 1075/// contexts. 1076void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1077 uint64_t VisibleOffset) { 1078 Record.push_back(LexicalOffset); 1079 Record.push_back(VisibleOffset); 1080} 1081 1082template <typename T> 1083void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1084 enum { NoRedeclaration = 0, PointsToPrevious, PointsToLatest }; 1085 if (D->RedeclLink.getNext() == D) { 1086 Record.push_back(NoRedeclaration); 1087 } else { 1088 if (D->RedeclLink.NextIsPrevious()) { 1089 Record.push_back(PointsToPrevious); 1090 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 1091 Writer.AddDeclRef(D->getFirstDeclaration(), Record); 1092 } else { 1093 Record.push_back(PointsToLatest); 1094 Writer.AddDeclRef(D->RedeclLink.getPointer(), Record); 1095 } 1096 } 1097 1098 T *First = D->getFirstDeclaration(); 1099 T *ThisDecl = static_cast<T*>(D); 1100 // If this is a most recent redeclaration that is pointed to by a first decl 1101 // in a chained PCH, keep track of the association with the map so we can 1102 // update the first decl during AST reading. 1103 if (ThisDecl != First && First->getMostRecentDeclaration() == ThisDecl && 1104 First->getPCHLevel() > ThisDecl->getPCHLevel()) { 1105 assert(Writer.FirstLatestDecls.find(First) == Writer.FirstLatestDecls.end() 1106 && "The latest is already set"); 1107 Writer.FirstLatestDecls[First] = ThisDecl; 1108 } 1109} 1110 1111//===----------------------------------------------------------------------===// 1112// ASTWriter Implementation 1113//===----------------------------------------------------------------------===// 1114 1115void ASTWriter::WriteDeclsBlockAbbrevs() { 1116 using namespace llvm; 1117 // Abbreviation for DECL_PARM_VAR. 1118 BitCodeAbbrev *Abv = new BitCodeAbbrev(); 1119 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1120 1121 // Decl 1122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1123 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1124 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1125 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1126 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1127 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1128 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1129 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1130 Abv->Add(BitCodeAbbrevOp(0)); // PCH level 1131 1132 // NamedDecl 1133 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1134 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1135 // ValueDecl 1136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1137 // DeclaratorDecl 1138 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1139 Abv->Add(BitCodeAbbrevOp(serialization::PREDEF_TYPE_NULL_ID)); // InfoType 1140 // VarDecl 1141 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1142 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1143 Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten 1144 Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified 1145 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1146 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable 1147 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable 1148 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1149 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1150 // ParmVarDecl 1151 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1152 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1153 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1154 1155 ParmVarDeclAbbrev = Stream.EmitAbbrev(Abv); 1156 1157 Abv = new BitCodeAbbrev(); 1158 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1159 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1160 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1161 1162 Abv = new BitCodeAbbrev(); 1163 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1164 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1165 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1166 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1167} 1168 1169/// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1170/// consumers of the AST. 1171/// 1172/// Such decls will always be deserialized from the AST file, so we would like 1173/// this to be as restrictive as possible. Currently the predicate is driven by 1174/// code generation requirements, if other clients have a different notion of 1175/// what is "required" then we may have to consider an alternate scheme where 1176/// clients can iterate over the top-level decls and get information on them, 1177/// without necessary deserializing them. We could explicitly require such 1178/// clients to use a separate API call to "realize" the decl. This should be 1179/// relatively painless since they would presumably only do it for top-level 1180/// decls. 1181static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 1182 // File scoped assembly or obj-c implementation must be seen. 1183 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplementationDecl>(D)) 1184 return true; 1185 1186 return Context.DeclMustBeEmitted(D); 1187} 1188 1189void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 1190 // Switch case IDs are per Decl. 1191 ClearSwitchCaseIDs(); 1192 1193 RecordData Record; 1194 ASTDeclWriter W(*this, Context, Record); 1195 1196 // If this declaration is also a DeclContext, write blocks for the 1197 // declarations that lexically stored inside its context and those 1198 // declarations that are visible from its context. These blocks 1199 // are written before the declaration itself so that we can put 1200 // their offsets into the record for the declaration. 1201 uint64_t LexicalOffset = 0; 1202 uint64_t VisibleOffset = 0; 1203 DeclContext *DC = dyn_cast<DeclContext>(D); 1204 if (DC) { 1205 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 1206 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 1207 } 1208 1209 // Determine the ID for this declaration 1210 serialization::DeclID &IDR = DeclIDs[D]; 1211 if (IDR == 0) 1212 IDR = NextDeclID++; 1213 serialization::DeclID ID = IDR; 1214 1215 if (ID < FirstDeclID) { 1216 // We're replacing a decl in a previous file. 1217 ReplacedDecls.push_back(std::make_pair(ID, Stream.GetCurrentBitNo())); 1218 } else { 1219 unsigned Index = ID - FirstDeclID; 1220 1221 // Record the offset for this declaration 1222 if (DeclOffsets.size() == Index) 1223 DeclOffsets.push_back(Stream.GetCurrentBitNo()); 1224 else if (DeclOffsets.size() < Index) { 1225 DeclOffsets.resize(Index+1); 1226 DeclOffsets[Index] = Stream.GetCurrentBitNo(); 1227 } 1228 } 1229 1230 // Build and emit a record for this declaration 1231 Record.clear(); 1232 W.Code = (serialization::DeclCode)0; 1233 W.AbbrevToUse = 0; 1234 W.Visit(D); 1235 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 1236 1237 if (!W.Code) 1238 llvm::report_fatal_error(llvm::StringRef("unexpected declaration kind '") + 1239 D->getDeclKindName() + "'"); 1240 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 1241 1242 // Flush any expressions that were written as part of this declaration. 1243 FlushStmts(); 1244 1245 // Flush C++ base specifiers, if there are any. 1246 FlushCXXBaseSpecifiers(); 1247 1248 // Note "external" declarations so that we can add them to a record in the 1249 // AST file later. 1250 // 1251 // FIXME: This should be renamed, the predicate is much more complicated. 1252 if (isRequiredDecl(D, Context)) 1253 ExternalDefinitions.push_back(ID); 1254} 1255