Chris Lattner | 12b1c76 | 2009-04-27 06:16:06 +0000 | [diff] [blame^] | 1 | //===--- PCHWriterDecl.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/Frontend/PCHWriter.h" |
| 15 | #include "clang/AST/DeclVisitor.h" |
| 16 | #include "clang/AST/Expr.h" |
| 17 | #include "llvm/Bitcode/BitstreamWriter.h" |
| 18 | using namespace clang; |
| 19 | |
| 20 | //===----------------------------------------------------------------------===// |
| 21 | // Declaration serialization |
| 22 | //===----------------------------------------------------------------------===// |
| 23 | |
| 24 | namespace { |
| 25 | class PCHDeclWriter : public DeclVisitor<PCHDeclWriter, void> { |
| 26 | |
| 27 | PCHWriter &Writer; |
| 28 | ASTContext &Context; |
| 29 | PCHWriter::RecordData &Record; |
| 30 | |
| 31 | public: |
| 32 | pch::DeclCode Code; |
| 33 | |
| 34 | PCHDeclWriter(PCHWriter &Writer, ASTContext &Context, |
| 35 | PCHWriter::RecordData &Record) |
| 36 | : Writer(Writer), Context(Context), Record(Record) { } |
| 37 | |
| 38 | void VisitDecl(Decl *D); |
| 39 | void VisitTranslationUnitDecl(TranslationUnitDecl *D); |
| 40 | void VisitNamedDecl(NamedDecl *D); |
| 41 | void VisitTypeDecl(TypeDecl *D); |
| 42 | void VisitTypedefDecl(TypedefDecl *D); |
| 43 | void VisitTagDecl(TagDecl *D); |
| 44 | void VisitEnumDecl(EnumDecl *D); |
| 45 | void VisitRecordDecl(RecordDecl *D); |
| 46 | void VisitValueDecl(ValueDecl *D); |
| 47 | void VisitEnumConstantDecl(EnumConstantDecl *D); |
| 48 | void VisitFunctionDecl(FunctionDecl *D); |
| 49 | void VisitFieldDecl(FieldDecl *D); |
| 50 | void VisitVarDecl(VarDecl *D); |
| 51 | void VisitImplicitParamDecl(ImplicitParamDecl *D); |
| 52 | void VisitParmVarDecl(ParmVarDecl *D); |
| 53 | void VisitOriginalParmVarDecl(OriginalParmVarDecl *D); |
| 54 | void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); |
| 55 | void VisitBlockDecl(BlockDecl *D); |
| 56 | void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, |
| 57 | uint64_t VisibleOffset); |
| 58 | void VisitObjCMethodDecl(ObjCMethodDecl *D); |
| 59 | void VisitObjCContainerDecl(ObjCContainerDecl *D); |
| 60 | void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); |
| 61 | void VisitObjCIvarDecl(ObjCIvarDecl *D); |
| 62 | void VisitObjCProtocolDecl(ObjCProtocolDecl *D); |
| 63 | void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); |
| 64 | void VisitObjCClassDecl(ObjCClassDecl *D); |
| 65 | void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); |
| 66 | void VisitObjCCategoryDecl(ObjCCategoryDecl *D); |
| 67 | void VisitObjCImplDecl(ObjCImplDecl *D); |
| 68 | void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); |
| 69 | void VisitObjCImplementationDecl(ObjCImplementationDecl *D); |
| 70 | void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); |
| 71 | void VisitObjCPropertyDecl(ObjCPropertyDecl *D); |
| 72 | void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); |
| 73 | }; |
| 74 | } |
| 75 | |
| 76 | void PCHDeclWriter::VisitDecl(Decl *D) { |
| 77 | Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record); |
| 78 | Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record); |
| 79 | Writer.AddSourceLocation(D->getLocation(), Record); |
| 80 | Record.push_back(D->isInvalidDecl()); |
| 81 | Record.push_back(D->hasAttrs()); |
| 82 | Record.push_back(D->isImplicit()); |
| 83 | Record.push_back(D->getAccess()); |
| 84 | } |
| 85 | |
| 86 | void PCHDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { |
| 87 | VisitDecl(D); |
| 88 | Code = pch::DECL_TRANSLATION_UNIT; |
| 89 | } |
| 90 | |
| 91 | void PCHDeclWriter::VisitNamedDecl(NamedDecl *D) { |
| 92 | VisitDecl(D); |
| 93 | Writer.AddDeclarationName(D->getDeclName(), Record); |
| 94 | } |
| 95 | |
| 96 | void PCHDeclWriter::VisitTypeDecl(TypeDecl *D) { |
| 97 | VisitNamedDecl(D); |
| 98 | Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); |
| 99 | } |
| 100 | |
| 101 | void PCHDeclWriter::VisitTypedefDecl(TypedefDecl *D) { |
| 102 | VisitTypeDecl(D); |
| 103 | Writer.AddTypeRef(D->getUnderlyingType(), Record); |
| 104 | Code = pch::DECL_TYPEDEF; |
| 105 | } |
| 106 | |
| 107 | void PCHDeclWriter::VisitTagDecl(TagDecl *D) { |
| 108 | VisitTypeDecl(D); |
| 109 | Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding |
| 110 | Record.push_back(D->isDefinition()); |
| 111 | Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record); |
| 112 | } |
| 113 | |
| 114 | void PCHDeclWriter::VisitEnumDecl(EnumDecl *D) { |
| 115 | VisitTagDecl(D); |
| 116 | Writer.AddTypeRef(D->getIntegerType(), Record); |
| 117 | Code = pch::DECL_ENUM; |
| 118 | } |
| 119 | |
| 120 | void PCHDeclWriter::VisitRecordDecl(RecordDecl *D) { |
| 121 | VisitTagDecl(D); |
| 122 | Record.push_back(D->hasFlexibleArrayMember()); |
| 123 | Record.push_back(D->isAnonymousStructOrUnion()); |
| 124 | Code = pch::DECL_RECORD; |
| 125 | } |
| 126 | |
| 127 | void PCHDeclWriter::VisitValueDecl(ValueDecl *D) { |
| 128 | VisitNamedDecl(D); |
| 129 | Writer.AddTypeRef(D->getType(), Record); |
| 130 | } |
| 131 | |
| 132 | void PCHDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { |
| 133 | VisitValueDecl(D); |
| 134 | Record.push_back(D->getInitExpr()? 1 : 0); |
| 135 | if (D->getInitExpr()) |
| 136 | Writer.AddStmt(D->getInitExpr()); |
| 137 | Writer.AddAPSInt(D->getInitVal(), Record); |
| 138 | Code = pch::DECL_ENUM_CONSTANT; |
| 139 | } |
| 140 | |
| 141 | void PCHDeclWriter::VisitFunctionDecl(FunctionDecl *D) { |
| 142 | VisitValueDecl(D); |
| 143 | Record.push_back(D->isThisDeclarationADefinition()); |
| 144 | if (D->isThisDeclarationADefinition()) |
| 145 | Writer.AddStmt(D->getBody(Context)); |
| 146 | Writer.AddDeclRef(D->getPreviousDeclaration(), Record); |
| 147 | Record.push_back(D->getStorageClass()); // FIXME: stable encoding |
| 148 | Record.push_back(D->isInline()); |
| 149 | Record.push_back(D->isC99InlineDefinition()); |
| 150 | Record.push_back(D->isVirtual()); |
| 151 | Record.push_back(D->isPure()); |
| 152 | Record.push_back(D->inheritedPrototype()); |
| 153 | Record.push_back(D->hasPrototype() && !D->inheritedPrototype()); |
| 154 | Record.push_back(D->isDeleted()); |
| 155 | Writer.AddSourceLocation(D->getTypeSpecStartLoc(), Record); |
| 156 | Record.push_back(D->param_size()); |
| 157 | for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); |
| 158 | P != PEnd; ++P) |
| 159 | Writer.AddDeclRef(*P, Record); |
| 160 | Code = pch::DECL_FUNCTION; |
| 161 | } |
| 162 | |
| 163 | void PCHDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { |
| 164 | VisitNamedDecl(D); |
| 165 | // FIXME: convert to LazyStmtPtr? |
| 166 | // Unlike C/C++, method bodies will never be in header files. |
| 167 | Record.push_back(D->getBody() != 0); |
| 168 | if (D->getBody() != 0) { |
| 169 | Writer.AddStmt(D->getBody(Context)); |
| 170 | Writer.AddDeclRef(D->getSelfDecl(), Record); |
| 171 | Writer.AddDeclRef(D->getCmdDecl(), Record); |
| 172 | } |
| 173 | Record.push_back(D->isInstanceMethod()); |
| 174 | Record.push_back(D->isVariadic()); |
| 175 | Record.push_back(D->isSynthesized()); |
| 176 | // FIXME: stable encoding for @required/@optional |
| 177 | Record.push_back(D->getImplementationControl()); |
| 178 | // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway |
| 179 | Record.push_back(D->getObjCDeclQualifier()); |
| 180 | Writer.AddTypeRef(D->getResultType(), Record); |
| 181 | Writer.AddSourceLocation(D->getLocEnd(), Record); |
| 182 | Record.push_back(D->param_size()); |
| 183 | for (ObjCMethodDecl::param_iterator P = D->param_begin(), |
| 184 | PEnd = D->param_end(); P != PEnd; ++P) |
| 185 | Writer.AddDeclRef(*P, Record); |
| 186 | Code = pch::DECL_OBJC_METHOD; |
| 187 | } |
| 188 | |
| 189 | void PCHDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { |
| 190 | VisitNamedDecl(D); |
| 191 | Writer.AddSourceLocation(D->getAtEndLoc(), Record); |
| 192 | // Abstract class (no need to define a stable pch::DECL code). |
| 193 | } |
| 194 | |
| 195 | void PCHDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { |
| 196 | VisitObjCContainerDecl(D); |
| 197 | Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record); |
| 198 | Writer.AddDeclRef(D->getSuperClass(), Record); |
| 199 | Record.push_back(D->protocol_size()); |
| 200 | for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(), |
| 201 | PEnd = D->protocol_end(); |
| 202 | P != PEnd; ++P) |
| 203 | Writer.AddDeclRef(*P, Record); |
| 204 | Record.push_back(D->ivar_size()); |
| 205 | for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(), |
| 206 | IEnd = D->ivar_end(); I != IEnd; ++I) |
| 207 | Writer.AddDeclRef(*I, Record); |
| 208 | Writer.AddDeclRef(D->getCategoryList(), Record); |
| 209 | Record.push_back(D->isForwardDecl()); |
| 210 | Record.push_back(D->isImplicitInterfaceDecl()); |
| 211 | Writer.AddSourceLocation(D->getClassLoc(), Record); |
| 212 | Writer.AddSourceLocation(D->getSuperClassLoc(), Record); |
| 213 | Writer.AddSourceLocation(D->getLocEnd(), Record); |
| 214 | Code = pch::DECL_OBJC_INTERFACE; |
| 215 | } |
| 216 | |
| 217 | void PCHDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { |
| 218 | VisitFieldDecl(D); |
| 219 | // FIXME: stable encoding for @public/@private/@protected/@package |
| 220 | Record.push_back(D->getAccessControl()); |
| 221 | Code = pch::DECL_OBJC_IVAR; |
| 222 | } |
| 223 | |
| 224 | void PCHDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { |
| 225 | VisitObjCContainerDecl(D); |
| 226 | Record.push_back(D->isForwardDecl()); |
| 227 | Writer.AddSourceLocation(D->getLocEnd(), Record); |
| 228 | Record.push_back(D->protocol_size()); |
| 229 | for (ObjCProtocolDecl::protocol_iterator |
| 230 | I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) |
| 231 | Writer.AddDeclRef(*I, Record); |
| 232 | Code = pch::DECL_OBJC_PROTOCOL; |
| 233 | } |
| 234 | |
| 235 | void PCHDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { |
| 236 | VisitFieldDecl(D); |
| 237 | Code = pch::DECL_OBJC_AT_DEFS_FIELD; |
| 238 | } |
| 239 | |
| 240 | void PCHDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) { |
| 241 | VisitDecl(D); |
| 242 | Record.push_back(D->size()); |
| 243 | for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I) |
| 244 | Writer.AddDeclRef(*I, Record); |
| 245 | Code = pch::DECL_OBJC_CLASS; |
| 246 | } |
| 247 | |
| 248 | void PCHDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { |
| 249 | VisitDecl(D); |
| 250 | Record.push_back(D->protocol_size()); |
| 251 | for (ObjCProtocolDecl::protocol_iterator |
| 252 | I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) |
| 253 | Writer.AddDeclRef(*I, Record); |
| 254 | Code = pch::DECL_OBJC_FORWARD_PROTOCOL; |
| 255 | } |
| 256 | |
| 257 | void PCHDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { |
| 258 | VisitObjCContainerDecl(D); |
| 259 | Writer.AddDeclRef(D->getClassInterface(), Record); |
| 260 | Record.push_back(D->protocol_size()); |
| 261 | for (ObjCProtocolDecl::protocol_iterator |
| 262 | I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I) |
| 263 | Writer.AddDeclRef(*I, Record); |
| 264 | Writer.AddDeclRef(D->getNextClassCategory(), Record); |
| 265 | Writer.AddSourceLocation(D->getLocEnd(), Record); |
| 266 | Code = pch::DECL_OBJC_CATEGORY; |
| 267 | } |
| 268 | |
| 269 | void PCHDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { |
| 270 | VisitNamedDecl(D); |
| 271 | Writer.AddDeclRef(D->getClassInterface(), Record); |
| 272 | Code = pch::DECL_OBJC_COMPATIBLE_ALIAS; |
| 273 | } |
| 274 | |
| 275 | void PCHDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { |
| 276 | VisitNamedDecl(D); |
| 277 | Writer.AddTypeRef(D->getType(), Record); |
| 278 | // FIXME: stable encoding |
| 279 | Record.push_back((unsigned)D->getPropertyAttributes()); |
| 280 | // FIXME: stable encoding |
| 281 | Record.push_back((unsigned)D->getPropertyImplementation()); |
| 282 | Writer.AddDeclarationName(D->getGetterName(), Record); |
| 283 | Writer.AddDeclarationName(D->getSetterName(), Record); |
| 284 | Writer.AddDeclRef(D->getGetterMethodDecl(), Record); |
| 285 | Writer.AddDeclRef(D->getSetterMethodDecl(), Record); |
| 286 | Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); |
| 287 | Code = pch::DECL_OBJC_PROPERTY; |
| 288 | } |
| 289 | |
| 290 | void PCHDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { |
| 291 | VisitNamedDecl(D); |
| 292 | Writer.AddDeclRef(D->getClassInterface(), Record); |
| 293 | Writer.AddSourceLocation(D->getLocEnd(), Record); |
| 294 | // Abstract class (no need to define a stable pch::DECL code). |
| 295 | } |
| 296 | |
| 297 | void PCHDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { |
| 298 | VisitObjCImplDecl(D); |
| 299 | Writer.AddIdentifierRef(D->getIdentifier(), Record); |
| 300 | Code = pch::DECL_OBJC_CATEGORY_IMPL; |
| 301 | } |
| 302 | |
| 303 | void PCHDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { |
| 304 | VisitObjCImplDecl(D); |
| 305 | Writer.AddDeclRef(D->getSuperClass(), Record); |
| 306 | Code = pch::DECL_OBJC_IMPLEMENTATION; |
| 307 | } |
| 308 | |
| 309 | void PCHDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { |
| 310 | VisitDecl(D); |
| 311 | Writer.AddSourceLocation(D->getLocStart(), Record); |
| 312 | Writer.AddDeclRef(D->getPropertyDecl(), Record); |
| 313 | Writer.AddDeclRef(D->getPropertyIvarDecl(), Record); |
| 314 | Code = pch::DECL_OBJC_PROPERTY_IMPL; |
| 315 | } |
| 316 | |
| 317 | void PCHDeclWriter::VisitFieldDecl(FieldDecl *D) { |
| 318 | VisitValueDecl(D); |
| 319 | Record.push_back(D->isMutable()); |
| 320 | Record.push_back(D->getBitWidth()? 1 : 0); |
| 321 | if (D->getBitWidth()) |
| 322 | Writer.AddStmt(D->getBitWidth()); |
| 323 | Code = pch::DECL_FIELD; |
| 324 | } |
| 325 | |
| 326 | void PCHDeclWriter::VisitVarDecl(VarDecl *D) { |
| 327 | VisitValueDecl(D); |
| 328 | Record.push_back(D->getStorageClass()); // FIXME: stable encoding |
| 329 | Record.push_back(D->isThreadSpecified()); |
| 330 | Record.push_back(D->hasCXXDirectInitializer()); |
| 331 | Record.push_back(D->isDeclaredInCondition()); |
| 332 | Writer.AddDeclRef(D->getPreviousDeclaration(), Record); |
| 333 | Writer.AddSourceLocation(D->getTypeSpecStartLoc(), Record); |
| 334 | Record.push_back(D->getInit()? 1 : 0); |
| 335 | if (D->getInit()) |
| 336 | Writer.AddStmt(D->getInit()); |
| 337 | Code = pch::DECL_VAR; |
| 338 | } |
| 339 | |
| 340 | void PCHDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { |
| 341 | VisitVarDecl(D); |
| 342 | Code = pch::DECL_IMPLICIT_PARAM; |
| 343 | } |
| 344 | |
| 345 | void PCHDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { |
| 346 | VisitVarDecl(D); |
| 347 | Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding |
| 348 | // FIXME: emit default argument (C++) |
| 349 | // FIXME: why isn't the "default argument" just stored as the initializer |
| 350 | // in VarDecl? |
| 351 | Code = pch::DECL_PARM_VAR; |
| 352 | } |
| 353 | |
| 354 | void PCHDeclWriter::VisitOriginalParmVarDecl(OriginalParmVarDecl *D) { |
| 355 | VisitParmVarDecl(D); |
| 356 | Writer.AddTypeRef(D->getOriginalType(), Record); |
| 357 | Code = pch::DECL_ORIGINAL_PARM_VAR; |
| 358 | } |
| 359 | |
| 360 | void PCHDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { |
| 361 | VisitDecl(D); |
| 362 | Writer.AddStmt(D->getAsmString()); |
| 363 | Code = pch::DECL_FILE_SCOPE_ASM; |
| 364 | } |
| 365 | |
| 366 | void PCHDeclWriter::VisitBlockDecl(BlockDecl *D) { |
| 367 | VisitDecl(D); |
| 368 | Writer.AddStmt(D->getBody()); |
| 369 | Record.push_back(D->param_size()); |
| 370 | for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end(); |
| 371 | P != PEnd; ++P) |
| 372 | Writer.AddDeclRef(*P, Record); |
| 373 | Code = pch::DECL_BLOCK; |
| 374 | } |
| 375 | |
| 376 | /// \brief Emit the DeclContext part of a declaration context decl. |
| 377 | /// |
| 378 | /// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL |
| 379 | /// block for this declaration context is stored. May be 0 to indicate |
| 380 | /// that there are no declarations stored within this context. |
| 381 | /// |
| 382 | /// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE |
| 383 | /// block for this declaration context is stored. May be 0 to indicate |
| 384 | /// that there are no declarations visible from this context. Note |
| 385 | /// that this value will not be emitted for non-primary declaration |
| 386 | /// contexts. |
| 387 | void PCHDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset, |
| 388 | uint64_t VisibleOffset) { |
| 389 | Record.push_back(LexicalOffset); |
| 390 | Record.push_back(VisibleOffset); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | //===----------------------------------------------------------------------===// |
| 395 | // PCHWriter Implementation |
| 396 | //===----------------------------------------------------------------------===// |
| 397 | |
| 398 | /// \brief Write a block containing all of the declarations. |
| 399 | void PCHWriter::WriteDeclsBlock(ASTContext &Context) { |
| 400 | // Enter the declarations block. |
| 401 | Stream.EnterSubblock(pch::DECLS_BLOCK_ID, 2); |
| 402 | |
| 403 | // Emit all of the declarations. |
| 404 | RecordData Record; |
| 405 | PCHDeclWriter W(*this, Context, Record); |
| 406 | while (!DeclsToEmit.empty()) { |
| 407 | // Pull the next declaration off the queue |
| 408 | Decl *D = DeclsToEmit.front(); |
| 409 | DeclsToEmit.pop(); |
| 410 | |
| 411 | // If this declaration is also a DeclContext, write blocks for the |
| 412 | // declarations that lexically stored inside its context and those |
| 413 | // declarations that are visible from its context. These blocks |
| 414 | // are written before the declaration itself so that we can put |
| 415 | // their offsets into the record for the declaration. |
| 416 | uint64_t LexicalOffset = 0; |
| 417 | uint64_t VisibleOffset = 0; |
| 418 | DeclContext *DC = dyn_cast<DeclContext>(D); |
| 419 | if (DC) { |
| 420 | LexicalOffset = WriteDeclContextLexicalBlock(Context, DC); |
| 421 | VisibleOffset = WriteDeclContextVisibleBlock(Context, DC); |
| 422 | } |
| 423 | |
| 424 | // Determine the ID for this declaration |
| 425 | pch::DeclID ID = DeclIDs[D]; |
| 426 | if (ID == 0) |
| 427 | ID = DeclIDs.size(); |
| 428 | |
| 429 | unsigned Index = ID - 1; |
| 430 | |
| 431 | // Record the offset for this declaration |
| 432 | if (DeclOffsets.size() == Index) |
| 433 | DeclOffsets.push_back(Stream.GetCurrentBitNo()); |
| 434 | else if (DeclOffsets.size() < Index) { |
| 435 | DeclOffsets.resize(Index+1); |
| 436 | DeclOffsets[Index] = Stream.GetCurrentBitNo(); |
| 437 | } |
| 438 | |
| 439 | // Build and emit a record for this declaration |
| 440 | Record.clear(); |
| 441 | W.Code = (pch::DeclCode)0; |
| 442 | W.Visit(D); |
| 443 | if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset); |
| 444 | |
| 445 | if (!W.Code) { |
| 446 | fprintf(stderr, "Cannot serialize declaration of kind %s\n", |
| 447 | D->getDeclKindName()); |
| 448 | assert(false && "Unhandled declaration kind while generating PCH"); |
| 449 | exit(-1); |
| 450 | } |
| 451 | Stream.EmitRecord(W.Code, Record); |
| 452 | |
| 453 | // If the declaration had any attributes, write them now. |
| 454 | if (D->hasAttrs()) |
| 455 | WriteAttributeRecord(D->getAttrs()); |
| 456 | |
| 457 | // Flush any expressions that were written as part of this declaration. |
| 458 | FlushStmts(); |
| 459 | |
| 460 | // Note external declarations so that we can add them to a record |
| 461 | // in the PCH file later. |
| 462 | if (isa<FileScopeAsmDecl>(D)) |
| 463 | ExternalDefinitions.push_back(ID); |
| 464 | } |
| 465 | |
| 466 | // Exit the declarations block |
| 467 | Stream.ExitBlock(); |
| 468 | } |