ASTWriterDecl.cpp revision 212904
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 "llvm/ADT/Twine.h" 20#include "llvm/Bitcode/BitstreamWriter.h" 21#include "llvm/Support/ErrorHandling.h" 22using namespace clang; 23 24//===----------------------------------------------------------------------===// 25// Declaration serialization 26//===----------------------------------------------------------------------===// 27 28namespace clang { 29 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 30 31 ASTWriter &Writer; 32 ASTContext &Context; 33 ASTWriter::RecordData &Record; 34 35 public: 36 serialization::DeclCode Code; 37 unsigned AbbrevToUse; 38 39 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, 40 ASTWriter::RecordData &Record) 41 : Writer(Writer), Context(Context), Record(Record) { 42 } 43 44 void Visit(Decl *D); 45 46 void VisitDecl(Decl *D); 47 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 48 void VisitNamedDecl(NamedDecl *D); 49 void VisitNamespaceDecl(NamespaceDecl *D); 50 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 51 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 52 void VisitTypeDecl(TypeDecl *D); 53 void VisitTypedefDecl(TypedefDecl *D); 54 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 55 void VisitTagDecl(TagDecl *D); 56 void VisitEnumDecl(EnumDecl *D); 57 void VisitRecordDecl(RecordDecl *D); 58 void VisitCXXRecordDecl(CXXRecordDecl *D); 59 void VisitClassTemplateSpecializationDecl( 60 ClassTemplateSpecializationDecl *D); 61 void VisitClassTemplatePartialSpecializationDecl( 62 ClassTemplatePartialSpecializationDecl *D); 63 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 64 void VisitValueDecl(ValueDecl *D); 65 void VisitEnumConstantDecl(EnumConstantDecl *D); 66 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 67 void VisitDeclaratorDecl(DeclaratorDecl *D); 68 void VisitFunctionDecl(FunctionDecl *D); 69 void VisitCXXMethodDecl(CXXMethodDecl *D); 70 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 71 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 72 void VisitCXXConversionDecl(CXXConversionDecl *D); 73 void VisitFieldDecl(FieldDecl *D); 74 void VisitVarDecl(VarDecl *D); 75 void VisitImplicitParamDecl(ImplicitParamDecl *D); 76 void VisitParmVarDecl(ParmVarDecl *D); 77 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 78 void VisitTemplateDecl(TemplateDecl *D); 79 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 80 void VisitClassTemplateDecl(ClassTemplateDecl *D); 81 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 82 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 83 void VisitUsingDecl(UsingDecl *D); 84 void VisitUsingShadowDecl(UsingShadowDecl *D); 85 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 86 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 87 void VisitAccessSpecDecl(AccessSpecDecl *D); 88 void VisitFriendDecl(FriendDecl *D); 89 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 90 void VisitStaticAssertDecl(StaticAssertDecl *D); 91 void VisitBlockDecl(BlockDecl *D); 92 93 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 94 uint64_t VisibleOffset); 95 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 96 97 98 // FIXME: Put in the same order is DeclNodes.td? 99 void VisitObjCMethodDecl(ObjCMethodDecl *D); 100 void VisitObjCContainerDecl(ObjCContainerDecl *D); 101 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 102 void VisitObjCIvarDecl(ObjCIvarDecl *D); 103 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 104 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 105 void VisitObjCClassDecl(ObjCClassDecl *D); 106 void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 107 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 108 void VisitObjCImplDecl(ObjCImplDecl *D); 109 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 110 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 111 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 112 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 113 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 114 }; 115} 116 117void ASTDeclWriter::Visit(Decl *D) { 118 DeclVisitor<ASTDeclWriter>::Visit(D); 119 120 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 121 // have been written. We want it last because we will not read it back when 122 // retrieving it from the AST, we'll just lazily set the offset. 123 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 124 Record.push_back(FD->isThisDeclarationADefinition()); 125 if (FD->isThisDeclarationADefinition()) 126 Writer.AddStmt(FD->getBody()); 127 } 128} 129 130void ASTDeclWriter::VisitDecl(Decl *D) { 131 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); 132 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); 133 Writer.AddSourceLocation(D->getLocation(), Record); 134 Record.push_back(D->isInvalidDecl()); 135 Record.push_back(D->hasAttrs()); 136 Record.push_back(D->isImplicit()); 137 Record.push_back(D->isUsed(false)); 138 Record.push_back(D->getAccess()); 139 Record.push_back(D->getPCHLevel()); 140} 141 142void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 143 VisitDecl(D); 144 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 145 Code = serialization::DECL_TRANSLATION_UNIT; 146} 147 148void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 149 VisitDecl(D); 150 Writer.AddDeclarationName(D->getDeclName(), Record); 151} 152 153void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 154 VisitNamedDecl(D); 155 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 156} 157 158void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 159 VisitTypeDecl(D); 160 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 161 Code = serialization::DECL_TYPEDEF; 162} 163 164void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 165 VisitTypeDecl(D); 166 Record.push_back(D->getIdentifierNamespace()); 167 VisitRedeclarable(D); 168 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 169 Record.push_back(D->isDefinition()); 170 Record.push_back(D->isEmbeddedInDeclarator()); 171 Writer.AddSourceLocation(D->getRBraceLoc(), Record); 172 Writer.AddSourceLocation(D->getTagKeywordLoc(), Record); 173 // FIXME: maybe write optional qualifier and its range. 174 Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record); 175} 176 177void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 178 VisitTagDecl(D); 179 Writer.AddTypeRef(D->getIntegerType(), Record); 180 Writer.AddTypeRef(D->getPromotionType(), Record); 181 Record.push_back(D->getNumPositiveBits()); 182 Record.push_back(D->getNumNegativeBits()); 183 Writer.AddDeclRef(D->getInstantiatedFromMemberEnum(), Record); 184 Code = serialization::DECL_ENUM; 185} 186 187void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 188 VisitTagDecl(D); 189 Record.push_back(D->hasFlexibleArrayMember()); 190 Record.push_back(D->isAnonymousStructOrUnion()); 191 Record.push_back(D->hasObjectMember()); 192 Code = serialization::DECL_RECORD; 193} 194 195void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 196 VisitNamedDecl(D); 197 Writer.AddTypeRef(D->getType(), Record); 198} 199 200void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 201 VisitValueDecl(D); 202 Record.push_back(D->getInitExpr()? 1 : 0); 203 if (D->getInitExpr()) 204 Writer.AddStmt(D->getInitExpr()); 205 Writer.AddAPSInt(D->getInitVal(), Record); 206 Code = serialization::DECL_ENUM_CONSTANT; 207} 208 209void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 210 VisitValueDecl(D); 211 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 212 // FIXME: write optional qualifier and its range. 213} 214 215void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 216 VisitDeclaratorDecl(D); 217 // FIXME: write DeclarationNameLoc. 218 219 Record.push_back(D->getIdentifierNamespace()); 220 Record.push_back(D->getTemplatedKind()); 221 switch (D->getTemplatedKind()) { 222 default: assert(false && "Unhandled TemplatedKind!"); 223 break; 224 case FunctionDecl::TK_NonTemplate: 225 break; 226 case FunctionDecl::TK_FunctionTemplate: 227 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record); 228 break; 229 case FunctionDecl::TK_MemberSpecialization: { 230 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 231 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record); 232 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 233 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record); 234 break; 235 } 236 case FunctionDecl::TK_FunctionTemplateSpecialization: { 237 FunctionTemplateSpecializationInfo * 238 FTSInfo = D->getTemplateSpecializationInfo(); 239 // We want it canonical to guarantee that it has a Common*. 240 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record); 241 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 242 243 // Template arguments. 244 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record); 245 246 // Template args as written. 247 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != 0); 248 if (FTSInfo->TemplateArgumentsAsWritten) { 249 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->size()); 250 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->size(); i!=e; ++i) 251 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i], 252 Record); 253 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getLAngleLoc(), 254 Record); 255 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getRAngleLoc(), 256 Record); 257 } 258 259 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record); 260 break; 261 } 262 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 263 DependentFunctionTemplateSpecializationInfo * 264 DFTSInfo = D->getDependentSpecializationInfo(); 265 266 // Templates. 267 Record.push_back(DFTSInfo->getNumTemplates()); 268 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 269 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record); 270 271 // Templates args. 272 Record.push_back(DFTSInfo->getNumTemplateArgs()); 273 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 274 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record); 275 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record); 276 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record); 277 break; 278 } 279 } 280 281 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 282 // after everything else is written. 283 284 VisitRedeclarable(D); 285 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 286 Record.push_back(D->getStorageClassAsWritten()); 287 Record.push_back(D->isInlineSpecified()); 288 Record.push_back(D->isVirtualAsWritten()); 289 Record.push_back(D->isPure()); 290 Record.push_back(D->hasInheritedPrototype()); 291 Record.push_back(D->hasWrittenPrototype()); 292 Record.push_back(D->isDeleted()); 293 Record.push_back(D->isTrivial()); 294 Record.push_back(D->isCopyAssignment()); 295 Record.push_back(D->hasImplicitReturnZero()); 296 Writer.AddSourceLocation(D->getLocEnd(), Record); 297 298 Record.push_back(D->param_size()); 299 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 300 P != PEnd; ++P) 301 Writer.AddDeclRef(*P, Record); 302 Code = serialization::DECL_FUNCTION; 303} 304 305void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 306 VisitNamedDecl(D); 307 // FIXME: convert to LazyStmtPtr? 308 // Unlike C/C++, method bodies will never be in header files. 309 bool HasBodyStuff = D->getBody() != 0 || 310 D->getSelfDecl() != 0 || D->getCmdDecl() != 0; 311 Record.push_back(HasBodyStuff); 312 if (HasBodyStuff) { 313 Writer.AddStmt(D->getBody()); 314 Writer.AddDeclRef(D->getSelfDecl(), Record); 315 Writer.AddDeclRef(D->getCmdDecl(), Record); 316 } 317 Record.push_back(D->isInstanceMethod()); 318 Record.push_back(D->isVariadic()); 319 Record.push_back(D->isSynthesized()); 320 Record.push_back(D->isDefined()); 321 // FIXME: stable encoding for @required/@optional 322 Record.push_back(D->getImplementationControl()); 323 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway 324 Record.push_back(D->getObjCDeclQualifier()); 325 Record.push_back(D->getNumSelectorArgs()); 326 Writer.AddTypeRef(D->getResultType(), Record); 327 Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record); 328 Writer.AddSourceLocation(D->getLocEnd(), Record); 329 Record.push_back(D->param_size()); 330 for (ObjCMethodDecl::param_iterator P = D->param_begin(), 331 PEnd = D->param_end(); P != PEnd; ++P) 332 Writer.AddDeclRef(*P, Record); 333 Code = serialization::DECL_OBJC_METHOD; 334} 335 336void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 337 VisitNamedDecl(D); 338 Writer.AddSourceRange(D->getAtEndRange(), Record); 339 // Abstract class (no need to define a stable serialization::DECL code). 340} 341 342void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 343 VisitObjCContainerDecl(D); 344 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); 345 Writer.AddDeclRef(D->getSuperClass(), Record); 346 347 // Write out the protocols that are directly referenced by the @interface. 348 Record.push_back(D->ReferencedProtocols.size()); 349 for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), 350 PEnd = D->protocol_end(); 351 P != PEnd; ++P) 352 Writer.AddDeclRef(*P, Record); 353 for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 354 PLEnd = D->protocol_loc_end(); 355 PL != PLEnd; ++PL) 356 Writer.AddSourceLocation(*PL, Record); 357 358 // Write out the protocols that are transitively referenced. 359 Record.push_back(D->AllReferencedProtocols.size()); 360 for (ObjCList<ObjCProtocolDecl>::iterator 361 P = D->AllReferencedProtocols.begin(), 362 PEnd = D->AllReferencedProtocols.end(); 363 P != PEnd; ++P) 364 Writer.AddDeclRef(*P, Record); 365 366 // Write out the ivars. 367 Record.push_back(D->ivar_size()); 368 for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), 369 IEnd = D->ivar_end(); I != IEnd; ++I) 370 Writer.AddDeclRef(*I, Record); 371 Writer.AddDeclRef(D->getCategoryList(), Record); 372 Record.push_back(D->isForwardDecl()); 373 Record.push_back(D->isImplicitInterfaceDecl()); 374 Writer.AddSourceLocation(D->getClassLoc(), Record); 375 Writer.AddSourceLocation(D->getSuperClassLoc(), Record); 376 Writer.AddSourceLocation(D->getLocEnd(), Record); 377 Code = serialization::DECL_OBJC_INTERFACE; 378} 379 380void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 381 VisitFieldDecl(D); 382 // FIXME: stable encoding for @public/@private/@protected/@package 383 Record.push_back(D->getAccessControl()); 384 Record.push_back(D->getSynthesize()); 385 Code = serialization::DECL_OBJC_IVAR; 386} 387 388void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 389 VisitObjCContainerDecl(D); 390 Record.push_back(D->isForwardDecl()); 391 Writer.AddSourceLocation(D->getLocEnd(), Record); 392 Record.push_back(D->protocol_size()); 393 for (ObjCProtocolDecl::protocol_iterator 394 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 395 Writer.AddDeclRef(*I, Record); 396 for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(), 397 PLEnd = D->protocol_loc_end(); 398 PL != PLEnd; ++PL) 399 Writer.AddSourceLocation(*PL, Record); 400 Code = serialization::DECL_OBJC_PROTOCOL; 401} 402 403void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 404 VisitFieldDecl(D); 405 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 406} 407 408void ASTDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) { 409 VisitDecl(D); 410 Record.push_back(D->size()); 411 for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) 412 Writer.AddDeclRef(I->getInterface(), Record); 413 for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) 414 Writer.AddSourceLocation(I->getLocation(), Record); 415 Code = serialization::DECL_OBJC_CLASS; 416} 417 418void ASTDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 419 VisitDecl(D); 420 Record.push_back(D->protocol_size()); 421 for (ObjCForwardProtocolDecl::protocol_iterator 422 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 423 Writer.AddDeclRef(*I, Record); 424 for (ObjCForwardProtocolDecl::protocol_loc_iterator 425 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 426 PL != PLEnd; ++PL) 427 Writer.AddSourceLocation(*PL, Record); 428 Code = serialization::DECL_OBJC_FORWARD_PROTOCOL; 429} 430 431void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 432 VisitObjCContainerDecl(D); 433 Writer.AddDeclRef(D->getClassInterface(), Record); 434 Record.push_back(D->protocol_size()); 435 for (ObjCCategoryDecl::protocol_iterator 436 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) 437 Writer.AddDeclRef(*I, Record); 438 for (ObjCCategoryDecl::protocol_loc_iterator 439 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end(); 440 PL != PLEnd; ++PL) 441 Writer.AddSourceLocation(*PL, Record); 442 Writer.AddDeclRef(D->getNextClassCategory(), Record); 443 Record.push_back(D->hasSynthBitfield()); 444 Writer.AddSourceLocation(D->getAtLoc(), Record); 445 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record); 446 Code = serialization::DECL_OBJC_CATEGORY; 447} 448 449void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 450 VisitNamedDecl(D); 451 Writer.AddDeclRef(D->getClassInterface(), Record); 452 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 453} 454 455void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 456 VisitNamedDecl(D); 457 Writer.AddSourceLocation(D->getAtLoc(), Record); 458 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record); 459 // FIXME: stable encoding 460 Record.push_back((unsigned)D->getPropertyAttributes()); 461 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 462 // FIXME: stable encoding 463 Record.push_back((unsigned)D->getPropertyImplementation()); 464 Writer.AddDeclarationName(D->getGetterName(), Record); 465 Writer.AddDeclarationName(D->getSetterName(), Record); 466 Writer.AddDeclRef(D->getGetterMethodDecl(), Record); 467 Writer.AddDeclRef(D->getSetterMethodDecl(), Record); 468 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 469 Code = serialization::DECL_OBJC_PROPERTY; 470} 471 472void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 473 VisitObjCContainerDecl(D); 474 Writer.AddDeclRef(D->getClassInterface(), Record); 475 // Abstract class (no need to define a stable serialization::DECL code). 476} 477 478void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 479 VisitObjCImplDecl(D); 480 Writer.AddIdentifierRef(D->getIdentifier(), Record); 481 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 482} 483 484void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 485 VisitObjCImplDecl(D); 486 Writer.AddDeclRef(D->getSuperClass(), Record); 487 Writer.AddCXXBaseOrMemberInitializers(D->IvarInitializers, 488 D->NumIvarInitializers, Record); 489 Record.push_back(D->hasSynthBitfield()); 490 Code = serialization::DECL_OBJC_IMPLEMENTATION; 491} 492 493void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 494 VisitDecl(D); 495 Writer.AddSourceLocation(D->getLocStart(), Record); 496 Writer.AddDeclRef(D->getPropertyDecl(), Record); 497 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); 498 Writer.AddStmt(D->getGetterCXXConstructor()); 499 Writer.AddStmt(D->getSetterCXXAssignment()); 500 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 501} 502 503void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 504 VisitDeclaratorDecl(D); 505 Record.push_back(D->isMutable()); 506 Record.push_back(D->getBitWidth()? 1 : 0); 507 if (D->getBitWidth()) 508 Writer.AddStmt(D->getBitWidth()); 509 if (!D->getDeclName()) 510 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record); 511 Code = serialization::DECL_FIELD; 512} 513 514void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 515 VisitDeclaratorDecl(D); 516 Record.push_back(D->getStorageClass()); // FIXME: stable encoding 517 Record.push_back(D->getStorageClassAsWritten()); 518 Record.push_back(D->isThreadSpecified()); 519 Record.push_back(D->hasCXXDirectInitializer()); 520 Record.push_back(D->isExceptionVariable()); 521 Record.push_back(D->isNRVOVariable()); 522 VisitRedeclarable(D); 523 Record.push_back(D->getInit() ? 1 : 0); 524 if (D->getInit()) 525 Writer.AddStmt(D->getInit()); 526 527 MemberSpecializationInfo *SpecInfo 528 = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0; 529 Record.push_back(SpecInfo != 0); 530 if (SpecInfo) { 531 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record); 532 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 533 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record); 534 } 535 536 Code = serialization::DECL_VAR; 537} 538 539void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 540 VisitVarDecl(D); 541 Code = serialization::DECL_IMPLICIT_PARAM; 542} 543 544void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 545 VisitVarDecl(D); 546 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 547 Record.push_back(D->hasInheritedDefaultArg()); 548 Record.push_back(D->hasUninstantiatedDefaultArg()); 549 if (D->hasUninstantiatedDefaultArg()) 550 Writer.AddStmt(D->getUninstantiatedDefaultArg()); 551 Code = serialization::DECL_PARM_VAR; 552 553 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 554 // we dynamically check for the properties that we optimize for, but don't 555 // know are true of all PARM_VAR_DECLs. 556 if (!D->getTypeSourceInfo() && 557 !D->hasAttrs() && 558 !D->isImplicit() && 559 !D->isUsed(false) && 560 D->getAccess() == AS_none && 561 D->getPCHLevel() == 0 && 562 D->getStorageClass() == 0 && 563 !D->hasCXXDirectInitializer() && // Can params have this ever? 564 D->getObjCDeclQualifier() == 0 && 565 !D->hasInheritedDefaultArg() && 566 D->getInit() == 0 && 567 !D->hasUninstantiatedDefaultArg()) // No default expr. 568 AbbrevToUse = Writer.getParmVarDeclAbbrev(); 569 570 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 571 // just us assuming it. 572 assert(!D->isInvalidDecl() && "Shouldn't emit invalid decls"); 573 assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread"); 574 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 575 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 576 assert(D->getPreviousDeclaration() == 0 && "PARM_VAR_DECL can't be redecl"); 577 assert(!D->isStaticDataMember() && 578 "PARM_VAR_DECL can't be static data member"); 579} 580 581void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 582 VisitDecl(D); 583 Writer.AddStmt(D->getAsmString()); 584 Code = serialization::DECL_FILE_SCOPE_ASM; 585} 586 587void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 588 VisitDecl(D); 589 Writer.AddStmt(D->getBody()); 590 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record); 591 Record.push_back(D->param_size()); 592 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); 593 P != PEnd; ++P) 594 Writer.AddDeclRef(*P, Record); 595 Code = serialization::DECL_BLOCK; 596} 597 598void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 599 VisitDecl(D); 600 // FIXME: It might be nice to serialize the brace locations for this 601 // declaration, which don't seem to be readily available in the AST. 602 Record.push_back(D->getLanguage()); 603 Record.push_back(D->hasBraces()); 604 Code = serialization::DECL_LINKAGE_SPEC; 605} 606 607void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 608 VisitNamedDecl(D); 609 Writer.AddSourceLocation(D->getLBracLoc(), Record); 610 Writer.AddSourceLocation(D->getRBracLoc(), Record); 611 Writer.AddDeclRef(D->getNextNamespace(), Record); 612 613 // Only write one reference--original or anonymous 614 Record.push_back(D->isOriginalNamespace()); 615 if (D->isOriginalNamespace()) 616 Writer.AddDeclRef(D->getAnonymousNamespace(), Record); 617 else 618 Writer.AddDeclRef(D->getOriginalNamespace(), Record); 619 Code = serialization::DECL_NAMESPACE; 620 621 if (Writer.hasChain() && !D->isOriginalNamespace() && 622 D->getOriginalNamespace()->getPCHLevel() > 0) { 623 Writer.AddUpdatedNamespace(D->getOriginalNamespace()); 624 } 625} 626 627void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 628 VisitNamedDecl(D); 629 Writer.AddSourceLocation(D->getNamespaceLoc(), Record); 630 Writer.AddSourceRange(D->getQualifierRange(), Record); 631 Writer.AddNestedNameSpecifier(D->getQualifier(), Record); 632 Writer.AddSourceLocation(D->getTargetNameLoc(), Record); 633 Writer.AddDeclRef(D->getNamespace(), Record); 634 Code = serialization::DECL_NAMESPACE_ALIAS; 635} 636 637void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 638 VisitNamedDecl(D); 639 Writer.AddSourceRange(D->getNestedNameRange(), Record); 640 Writer.AddSourceLocation(D->getUsingLocation(), Record); 641 Writer.AddNestedNameSpecifier(D->getTargetNestedNameDecl(), Record); 642 Record.push_back(D->getNumShadowDecls()); 643 for (UsingDecl::shadow_iterator P = D->shadow_begin(), 644 PEnd = D->shadow_end(); P != PEnd; ++P) 645 Writer.AddDeclRef(*P, Record); 646 Record.push_back(D->isTypeName()); 647 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record); 648 Code = serialization::DECL_USING; 649} 650 651void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 652 VisitNamedDecl(D); 653 Writer.AddDeclRef(D->getTargetDecl(), Record); 654 Writer.AddDeclRef(D->getUsingDecl(), Record); 655 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record); 656 Code = serialization::DECL_USING_SHADOW; 657} 658 659void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 660 VisitNamedDecl(D); 661 Writer.AddSourceLocation(D->getUsingLoc(), Record); 662 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record); 663 Writer.AddSourceRange(D->getQualifierRange(), Record); 664 Writer.AddNestedNameSpecifier(D->getQualifier(), Record); 665 Writer.AddDeclRef(D->getNominatedNamespace(), Record); 666 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record); 667 Code = serialization::DECL_USING_DIRECTIVE; 668} 669 670void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 671 VisitValueDecl(D); 672 Writer.AddSourceRange(D->getTargetNestedNameRange(), Record); 673 Writer.AddSourceLocation(D->getUsingLoc(), Record); 674 Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record); 675 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 676} 677 678void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 679 UnresolvedUsingTypenameDecl *D) { 680 VisitTypeDecl(D); 681 Writer.AddSourceRange(D->getTargetNestedNameRange(), Record); 682 Writer.AddSourceLocation(D->getUsingLoc(), Record); 683 Writer.AddSourceLocation(D->getTypenameLoc(), Record); 684 Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record); 685 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 686} 687 688void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 689 // See comments at ASTDeclReader::VisitCXXRecordDecl about why this happens 690 // before VisitRecordDecl. 691 enum { Data_NoDefData, Data_Owner, Data_NotOwner }; 692 bool OwnsDefinitionData = false; 693 if (D->DefinitionData) { 694 assert(D->DefinitionData->Definition && 695 "DefinitionData don't point to a definition decl!"); 696 OwnsDefinitionData = D->DefinitionData->Definition == D; 697 if (OwnsDefinitionData) { 698 Record.push_back(Data_Owner); 699 } else { 700 Record.push_back(Data_NotOwner); 701 Writer.AddDeclRef(D->DefinitionData->Definition, Record); 702 } 703 } else 704 Record.push_back(Data_NoDefData); 705 706 VisitRecordDecl(D); 707 708 if (OwnsDefinitionData) { 709 assert(D->DefinitionData); 710 struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData; 711 712 Record.push_back(Data.UserDeclaredConstructor); 713 Record.push_back(Data.UserDeclaredCopyConstructor); 714 Record.push_back(Data.UserDeclaredCopyAssignment); 715 Record.push_back(Data.UserDeclaredDestructor); 716 Record.push_back(Data.Aggregate); 717 Record.push_back(Data.PlainOldData); 718 Record.push_back(Data.Empty); 719 Record.push_back(Data.Polymorphic); 720 Record.push_back(Data.Abstract); 721 Record.push_back(Data.HasTrivialConstructor); 722 Record.push_back(Data.HasTrivialCopyConstructor); 723 Record.push_back(Data.HasTrivialCopyAssignment); 724 Record.push_back(Data.HasTrivialDestructor); 725 Record.push_back(Data.ComputedVisibleConversions); 726 Record.push_back(Data.DeclaredDefaultConstructor); 727 Record.push_back(Data.DeclaredCopyConstructor); 728 Record.push_back(Data.DeclaredCopyAssignment); 729 Record.push_back(Data.DeclaredDestructor); 730 731 Record.push_back(D->getNumBases()); 732 for (CXXRecordDecl::base_class_iterator I = D->bases_begin(), 733 E = D->bases_end(); I != E; ++I) 734 Writer.AddCXXBaseSpecifier(*I, Record); 735 736 // FIXME: Make VBases lazily computed when needed to avoid storing them. 737 Record.push_back(D->getNumVBases()); 738 for (CXXRecordDecl::base_class_iterator I = D->vbases_begin(), 739 E = D->vbases_end(); I != E; ++I) 740 Writer.AddCXXBaseSpecifier(*I, Record); 741 742 Writer.AddUnresolvedSet(Data.Conversions, Record); 743 Writer.AddUnresolvedSet(Data.VisibleConversions, Record); 744 // Data.Definition is written at the top. 745 Writer.AddDeclRef(Data.FirstFriend, Record); 746 } 747 748 enum { 749 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 750 }; 751 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 752 Record.push_back(CXXRecTemplate); 753 Writer.AddDeclRef(TemplD, Record); 754 } else if (MemberSpecializationInfo *MSInfo 755 = D->getMemberSpecializationInfo()) { 756 Record.push_back(CXXRecMemberSpecialization); 757 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record); 758 Record.push_back(MSInfo->getTemplateSpecializationKind()); 759 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record); 760 } else { 761 Record.push_back(CXXRecNotTemplate); 762 } 763 764 Code = serialization::DECL_CXX_RECORD; 765} 766 767void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 768 VisitFunctionDecl(D); 769 Record.push_back(D->size_overridden_methods()); 770 for (CXXMethodDecl::method_iterator 771 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 772 I != E; ++I) 773 Writer.AddDeclRef(*I, Record); 774 Code = serialization::DECL_CXX_METHOD; 775} 776 777void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 778 VisitCXXMethodDecl(D); 779 780 Record.push_back(D->IsExplicitSpecified); 781 Record.push_back(D->ImplicitlyDefined); 782 Writer.AddCXXBaseOrMemberInitializers(D->BaseOrMemberInitializers, 783 D->NumBaseOrMemberInitializers, Record); 784 785 Code = serialization::DECL_CXX_CONSTRUCTOR; 786} 787 788void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 789 VisitCXXMethodDecl(D); 790 791 Record.push_back(D->ImplicitlyDefined); 792 Writer.AddDeclRef(D->OperatorDelete, Record); 793 794 Code = serialization::DECL_CXX_DESTRUCTOR; 795} 796 797void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 798 VisitCXXMethodDecl(D); 799 Record.push_back(D->IsExplicitSpecified); 800 Code = serialization::DECL_CXX_CONVERSION; 801} 802 803void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 804 VisitDecl(D); 805 Writer.AddSourceLocation(D->getColonLoc(), Record); 806 Code = serialization::DECL_ACCESS_SPEC; 807} 808 809void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 810 VisitDecl(D); 811 Record.push_back(D->Friend.is<TypeSourceInfo*>()); 812 if (D->Friend.is<TypeSourceInfo*>()) 813 Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record); 814 else 815 Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record); 816 Writer.AddDeclRef(D->NextFriend, Record); 817 Writer.AddSourceLocation(D->FriendLoc, Record); 818 Code = serialization::DECL_FRIEND; 819} 820 821void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 822 VisitDecl(D); 823 Record.push_back(D->getNumTemplateParameters()); 824 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 825 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record); 826 Record.push_back(D->getFriendDecl() != 0); 827 if (D->getFriendDecl()) 828 Writer.AddDeclRef(D->getFriendDecl(), Record); 829 else 830 Writer.AddTypeSourceInfo(D->getFriendType(), Record); 831 Writer.AddSourceLocation(D->getFriendLoc(), Record); 832 Code = serialization::DECL_FRIEND_TEMPLATE; 833} 834 835void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 836 VisitNamedDecl(D); 837 838 Writer.AddDeclRef(D->getTemplatedDecl(), Record); 839 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 840} 841 842void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 843 VisitTemplateDecl(D); 844 845 Record.push_back(D->getIdentifierNamespace()); 846 Writer.AddDeclRef(D->getPreviousDeclaration(), Record); 847 if (D->getPreviousDeclaration() == 0) { 848 // This TemplateDecl owns the CommonPtr; write it. 849 assert(D->isCanonicalDecl()); 850 851 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record); 852 if (D->getInstantiatedFromMemberTemplate()) 853 Record.push_back(D->isMemberSpecialization()); 854 855 Writer.AddDeclRef(D->getCommonPtr()->Latest, Record); 856 } else { 857 RedeclarableTemplateDecl *First = D->getFirstDeclaration(); 858 assert(First != D); 859 // If this is a most recent redeclaration that is pointed to by a first decl 860 // in a chained PCH, keep track of the association with the map so we can 861 // update the first decl during AST reading. 862 if (First->getMostRecentDeclaration() == D && 863 First->getPCHLevel() > D->getPCHLevel()) { 864 assert(Writer.FirstLatestDecls.find(First)==Writer.FirstLatestDecls.end() 865 && "The latest is already set"); 866 Writer.FirstLatestDecls[First] = D; 867 } 868 } 869} 870 871void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 872 VisitRedeclarableTemplateDecl(D); 873 874 if (D->getPreviousDeclaration() == 0) { 875 typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy; 876 CTSDSetTy &CTSDSet = D->getSpecializations(); 877 Record.push_back(CTSDSet.size()); 878 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) { 879 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 880 Writer.AddDeclRef(&*I, Record); 881 } 882 883 typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy; 884 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations(); 885 Record.push_back(CTPSDSet.size()); 886 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) { 887 assert(I->isCanonicalDecl() && "Expected only canonical decls in set"); 888 Writer.AddDeclRef(&*I, Record); 889 } 890 891 // InjectedClassNameType is computed, no need to write it. 892 } 893 Code = serialization::DECL_CLASS_TEMPLATE; 894} 895 896void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 897 ClassTemplateSpecializationDecl *D) { 898 VisitCXXRecordDecl(D); 899 900 llvm::PointerUnion<ClassTemplateDecl *, 901 ClassTemplatePartialSpecializationDecl *> InstFrom 902 = D->getSpecializedTemplateOrPartial(); 903 Decl *InstFromD; 904 if (InstFrom.is<ClassTemplateDecl *>()) { 905 InstFromD = InstFrom.get<ClassTemplateDecl *>(); 906 Writer.AddDeclRef(InstFromD, Record); 907 } else { 908 InstFromD = InstFrom.get<ClassTemplatePartialSpecializationDecl *>(); 909 Writer.AddDeclRef(InstFromD, Record); 910 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record); 911 InstFromD = cast<ClassTemplatePartialSpecializationDecl>(InstFromD)-> 912 getSpecializedTemplate(); 913 } 914 // Is this a specialization of an already-serialized template? 915 if (InstFromD->getCanonicalDecl()->getPCHLevel() != 0) 916 Writer.AddAdditionalTemplateSpecialization(Writer.getDeclID(InstFromD), 917 Writer.getDeclID(D)); 918 919 // Explicit info. 920 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record); 921 if (D->getTypeAsWritten()) { 922 Writer.AddSourceLocation(D->getExternLoc(), Record); 923 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record); 924 } 925 926 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record); 927 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record); 928 Record.push_back(D->getSpecializationKind()); 929 930 if (D->isCanonicalDecl()) { 931 // When reading, we'll add it to the folding set of the following template. 932 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record); 933 } 934 935 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 936} 937 938void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 939 ClassTemplatePartialSpecializationDecl *D) { 940 VisitClassTemplateSpecializationDecl(D); 941 942 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record); 943 944 Record.push_back(D->getNumTemplateArgsAsWritten()); 945 for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i) 946 Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record); 947 948 Record.push_back(D->getSequenceNumber()); 949 950 // These are read/set from/to the first declaration. 951 if (D->getPreviousDeclaration() == 0) { 952 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record); 953 Record.push_back(D->isMemberSpecialization()); 954 } 955 956 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 957} 958 959void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 960 VisitRedeclarableTemplateDecl(D); 961 962 if (D->getPreviousDeclaration() == 0) { 963 // This FunctionTemplateDecl owns the CommonPtr; write it. 964 965 // Write the function specialization declarations. 966 Record.push_back(D->getSpecializations().size()); 967 for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator 968 I = D->getSpecializations().begin(), 969 E = D->getSpecializations().end() ; I != E; ++I) { 970 assert(I->Function->isCanonicalDecl() && 971 "Expected only canonical decls in set"); 972 Writer.AddDeclRef(I->Function, Record); 973 } 974 } 975 Code = serialization::DECL_FUNCTION_TEMPLATE; 976} 977 978void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 979 VisitTypeDecl(D); 980 981 Record.push_back(D->wasDeclaredWithTypename()); 982 Record.push_back(D->isParameterPack()); 983 Record.push_back(D->defaultArgumentWasInherited()); 984 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record); 985 986 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 987} 988 989void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 990 VisitVarDecl(D); 991 // TemplateParmPosition. 992 Record.push_back(D->getDepth()); 993 Record.push_back(D->getPosition()); 994 // Rest of NonTypeTemplateParmDecl. 995 Record.push_back(D->getDefaultArgument() != 0); 996 if (D->getDefaultArgument()) { 997 Writer.AddStmt(D->getDefaultArgument()); 998 Record.push_back(D->defaultArgumentWasInherited()); 999 } 1000 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1001} 1002 1003void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1004 VisitTemplateDecl(D); 1005 // TemplateParmPosition. 1006 Record.push_back(D->getDepth()); 1007 Record.push_back(D->getPosition()); 1008 // Rest of TemplateTemplateParmDecl. 1009 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record); 1010 Record.push_back(D->defaultArgumentWasInherited()); 1011 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1012} 1013 1014void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1015 VisitDecl(D); 1016 Writer.AddStmt(D->getAssertExpr()); 1017 Writer.AddStmt(D->getMessage()); 1018 Code = serialization::DECL_STATIC_ASSERT; 1019} 1020 1021/// \brief Emit the DeclContext part of a declaration context decl. 1022/// 1023/// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL 1024/// block for this declaration context is stored. May be 0 to indicate 1025/// that there are no declarations stored within this context. 1026/// 1027/// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE 1028/// block for this declaration context is stored. May be 0 to indicate 1029/// that there are no declarations visible from this context. Note 1030/// that this value will not be emitted for non-primary declaration 1031/// contexts. 1032void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, 1033 uint64_t VisibleOffset) { 1034 Record.push_back(LexicalOffset); 1035 Record.push_back(VisibleOffset); 1036} 1037 1038template <typename T> 1039void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1040 enum { NoRedeclaration = 0, PointsToPrevious, PointsToLatest }; 1041 if (D->RedeclLink.getNext() == D) { 1042 Record.push_back(NoRedeclaration); 1043 } else { 1044 Record.push_back(D->RedeclLink.NextIsPrevious() ? PointsToPrevious 1045 : PointsToLatest); 1046 Writer.AddDeclRef(D->RedeclLink.getPointer(), Record); 1047 } 1048 1049 T *First = D->getFirstDeclaration(); 1050 T *ThisDecl = static_cast<T*>(D); 1051 // If this is a most recent redeclaration that is pointed to by a first decl 1052 // in a chained PCH, keep track of the association with the map so we can 1053 // update the first decl during AST reading. 1054 if (ThisDecl != First && First->getMostRecentDeclaration() == ThisDecl && 1055 First->getPCHLevel() > ThisDecl->getPCHLevel()) { 1056 assert(Writer.FirstLatestDecls.find(First) == Writer.FirstLatestDecls.end() 1057 && "The latest is already set"); 1058 Writer.FirstLatestDecls[First] = ThisDecl; 1059 } 1060} 1061 1062//===----------------------------------------------------------------------===// 1063// ASTWriter Implementation 1064//===----------------------------------------------------------------------===// 1065 1066void ASTWriter::WriteDeclsBlockAbbrevs() { 1067 using namespace llvm; 1068 // Abbreviation for DECL_PARM_VAR. 1069 BitCodeAbbrev *Abv = new BitCodeAbbrev(); 1070 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1071 1072 // Decl 1073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext 1075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 1076 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?) 1077 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1078 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1079 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1080 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1081 Abv->Add(BitCodeAbbrevOp(0)); // PCH level 1082 1083 // NamedDecl 1084 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1085 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1086 // ValueDecl 1087 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1088 // DeclaratorDecl 1089 Abv->Add(BitCodeAbbrevOp(serialization::PREDEF_TYPE_NULL_ID)); // InfoType 1090 // VarDecl 1091 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass 1092 Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten 1093 Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified 1094 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer 1095 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable 1096 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable 1097 Abv->Add(BitCodeAbbrevOp(0)); // PrevDecl 1098 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1099 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1100 // ParmVarDecl 1101 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1102 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1103 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1104 1105 ParmVarDeclAbbrev = Stream.EmitAbbrev(Abv); 1106 1107 Abv = new BitCodeAbbrev(); 1108 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 1109 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1110 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv); 1111 1112 Abv = new BitCodeAbbrev(); 1113 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 1114 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1115 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1116 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv); 1117} 1118 1119/// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 1120/// consumers of the AST. 1121/// 1122/// Such decls will always be deserialized from the AST file, so we would like 1123/// this to be as restrictive as possible. Currently the predicate is driven by 1124/// code generation requirements, if other clients have a different notion of 1125/// what is "required" then we may have to consider an alternate scheme where 1126/// clients can iterate over the top-level decls and get information on them, 1127/// without necessary deserializing them. We could explicitly require such 1128/// clients to use a separate API call to "realize" the decl. This should be 1129/// relatively painless since they would presumably only do it for top-level 1130/// decls. 1131static bool isRequiredDecl(const Decl *D, ASTContext &Context) { 1132 // File scoped assembly or obj-c implementation must be seen. 1133 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplementationDecl>(D)) 1134 return true; 1135 1136 return Context.DeclMustBeEmitted(D); 1137} 1138 1139void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 1140 RecordData Record; 1141 ASTDeclWriter W(*this, Context, Record); 1142 1143 // If this declaration is also a DeclContext, write blocks for the 1144 // declarations that lexically stored inside its context and those 1145 // declarations that are visible from its context. These blocks 1146 // are written before the declaration itself so that we can put 1147 // their offsets into the record for the declaration. 1148 uint64_t LexicalOffset = 0; 1149 uint64_t VisibleOffset = 0; 1150 DeclContext *DC = dyn_cast<DeclContext>(D); 1151 if (DC) { 1152 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); 1153 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); 1154 } 1155 1156 // Determine the ID for this declaration 1157 serialization::DeclID &IDR = DeclIDs[D]; 1158 if (IDR == 0) 1159 IDR = NextDeclID++; 1160 serialization::DeclID ID = IDR; 1161 1162 if (ID < FirstDeclID) { 1163 // We're replacing a decl in a previous file. 1164 ReplacedDecls.push_back(std::make_pair(ID, Stream.GetCurrentBitNo())); 1165 } else { 1166 unsigned Index = ID - FirstDeclID; 1167 1168 // Record the offset for this declaration 1169 if (DeclOffsets.size() == Index) 1170 DeclOffsets.push_back(Stream.GetCurrentBitNo()); 1171 else if (DeclOffsets.size() < Index) { 1172 DeclOffsets.resize(Index+1); 1173 DeclOffsets[Index] = Stream.GetCurrentBitNo(); 1174 } 1175 } 1176 1177 // Build and emit a record for this declaration 1178 Record.clear(); 1179 W.Code = (serialization::DeclCode)0; 1180 W.AbbrevToUse = 0; 1181 W.Visit(D); 1182 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); 1183 1184 if (!W.Code) 1185 llvm::report_fatal_error(llvm::StringRef("unexpected declaration kind '") + 1186 D->getDeclKindName() + "'"); 1187 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse); 1188 1189 // If the declaration had any attributes, write them now. 1190 if (D->hasAttrs()) 1191 WriteAttributeRecord(D->getAttrs()); 1192 1193 // Flush any expressions that were written as part of this declaration. 1194 FlushStmts(); 1195 1196 // Note "external" declarations so that we can add them to a record in the 1197 // AST file later. 1198 // 1199 // FIXME: This should be renamed, the predicate is much more complicated. 1200 if (isRequiredDecl(D, Context)) 1201 ExternalDefinitions.push_back(ID); 1202} 1203