| //===--- ASTReader.cpp - AST File Reader ----------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the ASTReader class, which reads AST files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Serialization/ASTReader.h" |
| #include "ASTCommon.h" |
| #include "ASTReaderInternals.h" |
| #include "clang/AST/ASTConsumer.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/DeclTemplate.h" |
| #include "clang/AST/Expr.h" |
| #include "clang/AST/ExprCXX.h" |
| #include "clang/AST/NestedNameSpecifier.h" |
| #include "clang/AST/Type.h" |
| #include "clang/AST/TypeLocVisitor.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/SourceManagerInternals.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "clang/Basic/TargetOptions.h" |
| #include "clang/Basic/Version.h" |
| #include "clang/Basic/VersionTuple.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Lex/HeaderSearchOptions.h" |
| #include "clang/Lex/MacroInfo.h" |
| #include "clang/Lex/PreprocessingRecord.h" |
| #include "clang/Lex/Preprocessor.h" |
| #include "clang/Lex/PreprocessorOptions.h" |
| #include "clang/Sema/Scope.h" |
| #include "clang/Sema/Sema.h" |
| #include "clang/Serialization/ASTDeserializationListener.h" |
| #include "clang/Serialization/GlobalModuleIndex.h" |
| #include "clang/Serialization/ModuleManager.h" |
| #include "clang/Serialization/SerializationDiagnostic.h" |
| #include "llvm/ADT/Hashing.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Bitcode/BitstreamReader.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/SaveAndRestore.h" |
| #include "llvm/Support/system_error.h" |
| #include <algorithm> |
| #include <cstdio> |
| #include <iterator> |
| |
| using namespace clang; |
| using namespace clang::serialization; |
| using namespace clang::serialization::reader; |
| using llvm::BitstreamCursor; |
| |
| //===----------------------------------------------------------------------===// |
| // PCH validator implementation |
| //===----------------------------------------------------------------------===// |
| |
| ASTReaderListener::~ASTReaderListener() {} |
| |
| /// \brief Compare the given set of language options against an existing set of |
| /// language options. |
| /// |
| /// \param Diags If non-NULL, diagnostics will be emitted via this engine. |
| /// |
| /// \returns true if the languagae options mis-match, false otherwise. |
| static bool checkLanguageOptions(const LangOptions &LangOpts, |
| const LangOptions &ExistingLangOpts, |
| DiagnosticsEngine *Diags) { |
| #define LANGOPT(Name, Bits, Default, Description) \ |
| if (ExistingLangOpts.Name != LangOpts.Name) { \ |
| if (Diags) \ |
| Diags->Report(diag::err_pch_langopt_mismatch) \ |
| << Description << LangOpts.Name << ExistingLangOpts.Name; \ |
| return true; \ |
| } |
| |
| #define VALUE_LANGOPT(Name, Bits, Default, Description) \ |
| if (ExistingLangOpts.Name != LangOpts.Name) { \ |
| if (Diags) \ |
| Diags->Report(diag::err_pch_langopt_value_mismatch) \ |
| << Description; \ |
| return true; \ |
| } |
| |
| #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ |
| if (ExistingLangOpts.get##Name() != LangOpts.get##Name()) { \ |
| if (Diags) \ |
| Diags->Report(diag::err_pch_langopt_value_mismatch) \ |
| << Description; \ |
| return true; \ |
| } |
| |
| #define BENIGN_LANGOPT(Name, Bits, Default, Description) |
| #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) |
| #include "clang/Basic/LangOptions.def" |
| |
| if (ExistingLangOpts.ObjCRuntime != LangOpts.ObjCRuntime) { |
| if (Diags) |
| Diags->Report(diag::err_pch_langopt_value_mismatch) |
| << "target Objective-C runtime"; |
| return true; |
| } |
| |
| if (ExistingLangOpts.CommentOpts.BlockCommandNames != |
| LangOpts.CommentOpts.BlockCommandNames) { |
| if (Diags) |
| Diags->Report(diag::err_pch_langopt_value_mismatch) |
| << "block command names"; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /// \brief Compare the given set of target options against an existing set of |
| /// target options. |
| /// |
| /// \param Diags If non-NULL, diagnostics will be emitted via this engine. |
| /// |
| /// \returns true if the target options mis-match, false otherwise. |
| static bool checkTargetOptions(const TargetOptions &TargetOpts, |
| const TargetOptions &ExistingTargetOpts, |
| DiagnosticsEngine *Diags) { |
| #define CHECK_TARGET_OPT(Field, Name) \ |
| if (TargetOpts.Field != ExistingTargetOpts.Field) { \ |
| if (Diags) \ |
| Diags->Report(diag::err_pch_targetopt_mismatch) \ |
| << Name << TargetOpts.Field << ExistingTargetOpts.Field; \ |
| return true; \ |
| } |
| |
| CHECK_TARGET_OPT(Triple, "target"); |
| CHECK_TARGET_OPT(CPU, "target CPU"); |
| CHECK_TARGET_OPT(ABI, "target ABI"); |
| CHECK_TARGET_OPT(CXXABI, "target C++ ABI"); |
| CHECK_TARGET_OPT(LinkerVersion, "target linker version"); |
| #undef CHECK_TARGET_OPT |
| |
| // Compare feature sets. |
| SmallVector<StringRef, 4> ExistingFeatures( |
| ExistingTargetOpts.FeaturesAsWritten.begin(), |
| ExistingTargetOpts.FeaturesAsWritten.end()); |
| SmallVector<StringRef, 4> ReadFeatures(TargetOpts.FeaturesAsWritten.begin(), |
| TargetOpts.FeaturesAsWritten.end()); |
| std::sort(ExistingFeatures.begin(), ExistingFeatures.end()); |
| std::sort(ReadFeatures.begin(), ReadFeatures.end()); |
| |
| unsigned ExistingIdx = 0, ExistingN = ExistingFeatures.size(); |
| unsigned ReadIdx = 0, ReadN = ReadFeatures.size(); |
| while (ExistingIdx < ExistingN && ReadIdx < ReadN) { |
| if (ExistingFeatures[ExistingIdx] == ReadFeatures[ReadIdx]) { |
| ++ExistingIdx; |
| ++ReadIdx; |
| continue; |
| } |
| |
| if (ReadFeatures[ReadIdx] < ExistingFeatures[ExistingIdx]) { |
| if (Diags) |
| Diags->Report(diag::err_pch_targetopt_feature_mismatch) |
| << false << ReadFeatures[ReadIdx]; |
| return true; |
| } |
| |
| if (Diags) |
| Diags->Report(diag::err_pch_targetopt_feature_mismatch) |
| << true << ExistingFeatures[ExistingIdx]; |
| return true; |
| } |
| |
| if (ExistingIdx < ExistingN) { |
| if (Diags) |
| Diags->Report(diag::err_pch_targetopt_feature_mismatch) |
| << true << ExistingFeatures[ExistingIdx]; |
| return true; |
| } |
| |
| if (ReadIdx < ReadN) { |
| if (Diags) |
| Diags->Report(diag::err_pch_targetopt_feature_mismatch) |
| << false << ReadFeatures[ReadIdx]; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool |
| PCHValidator::ReadLanguageOptions(const LangOptions &LangOpts, |
| bool Complain) { |
| const LangOptions &ExistingLangOpts = PP.getLangOpts(); |
| return checkLanguageOptions(LangOpts, ExistingLangOpts, |
| Complain? &Reader.Diags : 0); |
| } |
| |
| bool PCHValidator::ReadTargetOptions(const TargetOptions &TargetOpts, |
| bool Complain) { |
| const TargetOptions &ExistingTargetOpts = PP.getTargetInfo().getTargetOpts(); |
| return checkTargetOptions(TargetOpts, ExistingTargetOpts, |
| Complain? &Reader.Diags : 0); |
| } |
| |
| namespace { |
| typedef llvm::StringMap<std::pair<StringRef, bool /*IsUndef*/> > |
| MacroDefinitionsMap; |
| } |
| |
| /// \brief Collect the macro definitions provided by the given preprocessor |
| /// options. |
| static void collectMacroDefinitions(const PreprocessorOptions &PPOpts, |
| MacroDefinitionsMap &Macros, |
| SmallVectorImpl<StringRef> *MacroNames = 0){ |
| for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) { |
| StringRef Macro = PPOpts.Macros[I].first; |
| bool IsUndef = PPOpts.Macros[I].second; |
| |
| std::pair<StringRef, StringRef> MacroPair = Macro.split('='); |
| StringRef MacroName = MacroPair.first; |
| StringRef MacroBody = MacroPair.second; |
| |
| // For an #undef'd macro, we only care about the name. |
| if (IsUndef) { |
| if (MacroNames && !Macros.count(MacroName)) |
| MacroNames->push_back(MacroName); |
| |
| Macros[MacroName] = std::make_pair("", true); |
| continue; |
| } |
| |
| // For a #define'd macro, figure out the actual definition. |
| if (MacroName.size() == Macro.size()) |
| MacroBody = "1"; |
| else { |
| // Note: GCC drops anything following an end-of-line character. |
| StringRef::size_type End = MacroBody.find_first_of("\n\r"); |
| MacroBody = MacroBody.substr(0, End); |
| } |
| |
| if (MacroNames && !Macros.count(MacroName)) |
| MacroNames->push_back(MacroName); |
| Macros[MacroName] = std::make_pair(MacroBody, false); |
| } |
| } |
| |
| /// \brief Check the preprocessor options deserialized from the control block |
| /// against the preprocessor options in an existing preprocessor. |
| /// |
| /// \param Diags If non-null, produce diagnostics for any mismatches incurred. |
| static bool checkPreprocessorOptions(const PreprocessorOptions &PPOpts, |
| const PreprocessorOptions &ExistingPPOpts, |
| DiagnosticsEngine *Diags, |
| FileManager &FileMgr, |
| std::string &SuggestedPredefines, |
| const LangOptions &LangOpts) { |
| // Check macro definitions. |
| MacroDefinitionsMap ASTFileMacros; |
| collectMacroDefinitions(PPOpts, ASTFileMacros); |
| MacroDefinitionsMap ExistingMacros; |
| SmallVector<StringRef, 4> ExistingMacroNames; |
| collectMacroDefinitions(ExistingPPOpts, ExistingMacros, &ExistingMacroNames); |
| |
| for (unsigned I = 0, N = ExistingMacroNames.size(); I != N; ++I) { |
| // Dig out the macro definition in the existing preprocessor options. |
| StringRef MacroName = ExistingMacroNames[I]; |
| std::pair<StringRef, bool> Existing = ExistingMacros[MacroName]; |
| |
| // Check whether we know anything about this macro name or not. |
| llvm::StringMap<std::pair<StringRef, bool /*IsUndef*/> >::iterator Known |
| = ASTFileMacros.find(MacroName); |
| if (Known == ASTFileMacros.end()) { |
| // FIXME: Check whether this identifier was referenced anywhere in the |
| // AST file. If so, we should reject the AST file. Unfortunately, this |
| // information isn't in the control block. What shall we do about it? |
| |
| if (Existing.second) { |
| SuggestedPredefines += "#undef "; |
| SuggestedPredefines += MacroName.str(); |
| SuggestedPredefines += '\n'; |
| } else { |
| SuggestedPredefines += "#define "; |
| SuggestedPredefines += MacroName.str(); |
| SuggestedPredefines += ' '; |
| SuggestedPredefines += Existing.first.str(); |
| SuggestedPredefines += '\n'; |
| } |
| continue; |
| } |
| |
| // If the macro was defined in one but undef'd in the other, we have a |
| // conflict. |
| if (Existing.second != Known->second.second) { |
| if (Diags) { |
| Diags->Report(diag::err_pch_macro_def_undef) |
| << MacroName << Known->second.second; |
| } |
| return true; |
| } |
| |
| // If the macro was #undef'd in both, or if the macro bodies are identical, |
| // it's fine. |
| if (Existing.second || Existing.first == Known->second.first) |
| continue; |
| |
| // The macro bodies differ; complain. |
| if (Diags) { |
| Diags->Report(diag::err_pch_macro_def_conflict) |
| << MacroName << Known->second.first << Existing.first; |
| } |
| return true; |
| } |
| |
| // Check whether we're using predefines. |
| if (PPOpts.UsePredefines != ExistingPPOpts.UsePredefines) { |
| if (Diags) { |
| Diags->Report(diag::err_pch_undef) << ExistingPPOpts.UsePredefines; |
| } |
| return true; |
| } |
| |
| // Detailed record is important since it is used for the module cache hash. |
| if (LangOpts.Modules && |
| PPOpts.DetailedRecord != ExistingPPOpts.DetailedRecord) { |
| if (Diags) { |
| Diags->Report(diag::err_pch_pp_detailed_record) << PPOpts.DetailedRecord; |
| } |
| return true; |
| } |
| |
| // Compute the #include and #include_macros lines we need. |
| for (unsigned I = 0, N = ExistingPPOpts.Includes.size(); I != N; ++I) { |
| StringRef File = ExistingPPOpts.Includes[I]; |
| if (File == ExistingPPOpts.ImplicitPCHInclude) |
| continue; |
| |
| if (std::find(PPOpts.Includes.begin(), PPOpts.Includes.end(), File) |
| != PPOpts.Includes.end()) |
| continue; |
| |
| SuggestedPredefines += "#include \""; |
| SuggestedPredefines += |
| HeaderSearch::NormalizeDashIncludePath(File, FileMgr); |
| SuggestedPredefines += "\"\n"; |
| } |
| |
| for (unsigned I = 0, N = ExistingPPOpts.MacroIncludes.size(); I != N; ++I) { |
| StringRef File = ExistingPPOpts.MacroIncludes[I]; |
| if (std::find(PPOpts.MacroIncludes.begin(), PPOpts.MacroIncludes.end(), |
| File) |
| != PPOpts.MacroIncludes.end()) |
| continue; |
| |
| SuggestedPredefines += "#__include_macros \""; |
| SuggestedPredefines += |
| HeaderSearch::NormalizeDashIncludePath(File, FileMgr); |
| SuggestedPredefines += "\"\n##\n"; |
| } |
| |
| return false; |
| } |
| |
| bool PCHValidator::ReadPreprocessorOptions(const PreprocessorOptions &PPOpts, |
| bool Complain, |
| std::string &SuggestedPredefines) { |
| const PreprocessorOptions &ExistingPPOpts = PP.getPreprocessorOpts(); |
| |
| return checkPreprocessorOptions(PPOpts, ExistingPPOpts, |
| Complain? &Reader.Diags : 0, |
| PP.getFileManager(), |
| SuggestedPredefines, |
| PP.getLangOpts()); |
| } |
| |
| void PCHValidator::ReadHeaderFileInfo(const HeaderFileInfo &HFI, |
| unsigned ID) { |
| PP.getHeaderSearchInfo().setHeaderFileInfoForUID(HFI, ID); |
| ++NumHeaderInfos; |
| } |
| |
| void PCHValidator::ReadCounter(const ModuleFile &M, unsigned Value) { |
| PP.setCounterValue(Value); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // AST reader implementation |
| //===----------------------------------------------------------------------===// |
| |
| void |
| ASTReader::setDeserializationListener(ASTDeserializationListener *Listener) { |
| DeserializationListener = Listener; |
| } |
| |
| |
| |
| unsigned ASTSelectorLookupTrait::ComputeHash(Selector Sel) { |
| return serialization::ComputeHash(Sel); |
| } |
| |
| |
| std::pair<unsigned, unsigned> |
| ASTSelectorLookupTrait::ReadKeyDataLength(const unsigned char*& d) { |
| using namespace clang::io; |
| unsigned KeyLen = ReadUnalignedLE16(d); |
| unsigned DataLen = ReadUnalignedLE16(d); |
| return std::make_pair(KeyLen, DataLen); |
| } |
| |
| ASTSelectorLookupTrait::internal_key_type |
| ASTSelectorLookupTrait::ReadKey(const unsigned char* d, unsigned) { |
| using namespace clang::io; |
| SelectorTable &SelTable = Reader.getContext().Selectors; |
| unsigned N = ReadUnalignedLE16(d); |
| IdentifierInfo *FirstII |
| = Reader.getLocalIdentifier(F, ReadUnalignedLE32(d)); |
| if (N == 0) |
| return SelTable.getNullarySelector(FirstII); |
| else if (N == 1) |
| return SelTable.getUnarySelector(FirstII); |
| |
| SmallVector<IdentifierInfo *, 16> Args; |
| Args.push_back(FirstII); |
| for (unsigned I = 1; I != N; ++I) |
| Args.push_back(Reader.getLocalIdentifier(F, ReadUnalignedLE32(d))); |
| |
| return SelTable.getSelector(N, Args.data()); |
| } |
| |
| ASTSelectorLookupTrait::data_type |
| ASTSelectorLookupTrait::ReadData(Selector, const unsigned char* d, |
| unsigned DataLen) { |
| using namespace clang::io; |
| |
| data_type Result; |
| |
| Result.ID = Reader.getGlobalSelectorID(F, ReadUnalignedLE32(d)); |
| unsigned NumInstanceMethodsAndBits = ReadUnalignedLE16(d); |
| unsigned NumFactoryMethodsAndBits = ReadUnalignedLE16(d); |
| Result.InstanceBits = NumInstanceMethodsAndBits & 0x3; |
| Result.FactoryBits = NumFactoryMethodsAndBits & 0x3; |
| unsigned NumInstanceMethods = NumInstanceMethodsAndBits >> 2; |
| unsigned NumFactoryMethods = NumFactoryMethodsAndBits >> 2; |
| |
| // Load instance methods |
| for (unsigned I = 0; I != NumInstanceMethods; ++I) { |
| if (ObjCMethodDecl *Method |
| = Reader.GetLocalDeclAs<ObjCMethodDecl>(F, ReadUnalignedLE32(d))) |
| Result.Instance.push_back(Method); |
| } |
| |
| // Load factory methods |
| for (unsigned I = 0; I != NumFactoryMethods; ++I) { |
| if (ObjCMethodDecl *Method |
| = Reader.GetLocalDeclAs<ObjCMethodDecl>(F, ReadUnalignedLE32(d))) |
| Result.Factory.push_back(Method); |
| } |
| |
| return Result; |
| } |
| |
| unsigned ASTIdentifierLookupTraitBase::ComputeHash(const internal_key_type& a) { |
| return llvm::HashString(a); |
| } |
| |
| std::pair<unsigned, unsigned> |
| ASTIdentifierLookupTraitBase::ReadKeyDataLength(const unsigned char*& d) { |
| using namespace clang::io; |
| unsigned DataLen = ReadUnalignedLE16(d); |
| unsigned KeyLen = ReadUnalignedLE16(d); |
| return std::make_pair(KeyLen, DataLen); |
| } |
| |
| ASTIdentifierLookupTraitBase::internal_key_type |
| ASTIdentifierLookupTraitBase::ReadKey(const unsigned char* d, unsigned n) { |
| assert(n >= 2 && d[n-1] == '\0'); |
| return StringRef((const char*) d, n-1); |
| } |
| |
| /// \brief Whether the given identifier is "interesting". |
| static bool isInterestingIdentifier(IdentifierInfo &II) { |
| return II.isPoisoned() || |
| II.isExtensionToken() || |
| II.getObjCOrBuiltinID() || |
| II.hasRevertedTokenIDToIdentifier() || |
| II.hadMacroDefinition() || |
| II.getFETokenInfo<void>(); |
| } |
| |
| IdentifierInfo *ASTIdentifierLookupTrait::ReadData(const internal_key_type& k, |
| const unsigned char* d, |
| unsigned DataLen) { |
| using namespace clang::io; |
| unsigned RawID = ReadUnalignedLE32(d); |
| bool IsInteresting = RawID & 0x01; |
| |
| // Wipe out the "is interesting" bit. |
| RawID = RawID >> 1; |
| |
| IdentID ID = Reader.getGlobalIdentifierID(F, RawID); |
| if (!IsInteresting) { |
| // For uninteresting identifiers, just build the IdentifierInfo |
| // and associate it with the persistent ID. |
| IdentifierInfo *II = KnownII; |
| if (!II) { |
| II = &Reader.getIdentifierTable().getOwn(k); |
| KnownII = II; |
| } |
| Reader.SetIdentifierInfo(ID, II); |
| if (!II->isFromAST()) { |
| bool WasInteresting = isInterestingIdentifier(*II); |
| II->setIsFromAST(); |
| if (WasInteresting) |
| II->setChangedSinceDeserialization(); |
| } |
| Reader.markIdentifierUpToDate(II); |
| return II; |
| } |
| |
| unsigned ObjCOrBuiltinID = ReadUnalignedLE16(d); |
| unsigned Bits = ReadUnalignedLE16(d); |
| bool CPlusPlusOperatorKeyword = Bits & 0x01; |
| Bits >>= 1; |
| bool HasRevertedTokenIDToIdentifier = Bits & 0x01; |
| Bits >>= 1; |
| bool Poisoned = Bits & 0x01; |
| Bits >>= 1; |
| bool ExtensionToken = Bits & 0x01; |
| Bits >>= 1; |
| bool hasSubmoduleMacros = Bits & 0x01; |
| Bits >>= 1; |
| bool hadMacroDefinition = Bits & 0x01; |
| Bits >>= 1; |
| |
| assert(Bits == 0 && "Extra bits in the identifier?"); |
| DataLen -= 8; |
| |
| // Build the IdentifierInfo itself and link the identifier ID with |
| // the new IdentifierInfo. |
| IdentifierInfo *II = KnownII; |
| if (!II) { |
| II = &Reader.getIdentifierTable().getOwn(StringRef(k)); |
| KnownII = II; |
| } |
| Reader.markIdentifierUpToDate(II); |
| if (!II->isFromAST()) { |
| bool WasInteresting = isInterestingIdentifier(*II); |
| II->setIsFromAST(); |
| if (WasInteresting) |
| II->setChangedSinceDeserialization(); |
| } |
| |
| // Set or check the various bits in the IdentifierInfo structure. |
| // Token IDs are read-only. |
| if (HasRevertedTokenIDToIdentifier && II->getTokenID() != tok::identifier) |
| II->RevertTokenIDToIdentifier(); |
| II->setObjCOrBuiltinID(ObjCOrBuiltinID); |
| assert(II->isExtensionToken() == ExtensionToken && |
| "Incorrect extension token flag"); |
| (void)ExtensionToken; |
| if (Poisoned) |
| II->setIsPoisoned(true); |
| assert(II->isCPlusPlusOperatorKeyword() == CPlusPlusOperatorKeyword && |
| "Incorrect C++ operator keyword flag"); |
| (void)CPlusPlusOperatorKeyword; |
| |
| // If this identifier is a macro, deserialize the macro |
| // definition. |
| if (hadMacroDefinition) { |
| uint32_t MacroDirectivesOffset = ReadUnalignedLE32(d); |
| DataLen -= 4; |
| SmallVector<uint32_t, 8> LocalMacroIDs; |
| if (hasSubmoduleMacros) { |
| while (uint32_t LocalMacroID = ReadUnalignedLE32(d)) { |
| DataLen -= 4; |
| LocalMacroIDs.push_back(LocalMacroID); |
| } |
| DataLen -= 4; |
| } |
| |
| if (F.Kind == MK_Module) { |
| for (SmallVectorImpl<uint32_t>::iterator |
| I = LocalMacroIDs.begin(), E = LocalMacroIDs.end(); I != E; ++I) { |
| MacroID MacID = Reader.getGlobalMacroID(F, *I); |
| Reader.addPendingMacroFromModule(II, &F, MacID, F.DirectImportLoc); |
| } |
| } else { |
| Reader.addPendingMacroFromPCH(II, &F, MacroDirectivesOffset); |
| } |
| } |
| |
| Reader.SetIdentifierInfo(ID, II); |
| |
| // Read all of the declarations visible at global scope with this |
| // name. |
| if (DataLen > 0) { |
| SmallVector<uint32_t, 4> DeclIDs; |
| for (; DataLen > 0; DataLen -= 4) |
| DeclIDs.push_back(Reader.getGlobalDeclID(F, ReadUnalignedLE32(d))); |
| Reader.SetGloballyVisibleDecls(II, DeclIDs); |
| } |
| |
| return II; |
| } |
| |
| unsigned |
| ASTDeclContextNameLookupTrait::ComputeHash(const DeclNameKey &Key) const { |
| llvm::FoldingSetNodeID ID; |
| ID.AddInteger(Key.Kind); |
| |
| switch (Key.Kind) { |
| case DeclarationName::Identifier: |
| case DeclarationName::CXXLiteralOperatorName: |
| ID.AddString(((IdentifierInfo*)Key.Data)->getName()); |
| break; |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| ID.AddInteger(serialization::ComputeHash(Selector(Key.Data))); |
| break; |
| case DeclarationName::CXXOperatorName: |
| ID.AddInteger((OverloadedOperatorKind)Key.Data); |
| break; |
| case DeclarationName::CXXConstructorName: |
| case DeclarationName::CXXDestructorName: |
| case DeclarationName::CXXConversionFunctionName: |
| case DeclarationName::CXXUsingDirective: |
| break; |
| } |
| |
| return ID.ComputeHash(); |
| } |
| |
| ASTDeclContextNameLookupTrait::internal_key_type |
| ASTDeclContextNameLookupTrait::GetInternalKey( |
| const external_key_type& Name) const { |
| DeclNameKey Key; |
| Key.Kind = Name.getNameKind(); |
| switch (Name.getNameKind()) { |
| case DeclarationName::Identifier: |
| Key.Data = (uint64_t)Name.getAsIdentifierInfo(); |
| break; |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| Key.Data = (uint64_t)Name.getObjCSelector().getAsOpaquePtr(); |
| break; |
| case DeclarationName::CXXOperatorName: |
| Key.Data = Name.getCXXOverloadedOperator(); |
| break; |
| case DeclarationName::CXXLiteralOperatorName: |
| Key.Data = (uint64_t)Name.getCXXLiteralIdentifier(); |
| break; |
| case DeclarationName::CXXConstructorName: |
| case DeclarationName::CXXDestructorName: |
| case DeclarationName::CXXConversionFunctionName: |
| case DeclarationName::CXXUsingDirective: |
| Key.Data = 0; |
| break; |
| } |
| |
| return Key; |
| } |
| |
| std::pair<unsigned, unsigned> |
| ASTDeclContextNameLookupTrait::ReadKeyDataLength(const unsigned char*& d) { |
| using namespace clang::io; |
| unsigned KeyLen = ReadUnalignedLE16(d); |
| unsigned DataLen = ReadUnalignedLE16(d); |
| return std::make_pair(KeyLen, DataLen); |
| } |
| |
| ASTDeclContextNameLookupTrait::internal_key_type |
| ASTDeclContextNameLookupTrait::ReadKey(const unsigned char* d, unsigned) { |
| using namespace clang::io; |
| |
| DeclNameKey Key; |
| Key.Kind = (DeclarationName::NameKind)*d++; |
| switch (Key.Kind) { |
| case DeclarationName::Identifier: |
| Key.Data = (uint64_t)Reader.getLocalIdentifier(F, ReadUnalignedLE32(d)); |
| break; |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| Key.Data = |
| (uint64_t)Reader.getLocalSelector(F, ReadUnalignedLE32(d)) |
| .getAsOpaquePtr(); |
| break; |
| case DeclarationName::CXXOperatorName: |
| Key.Data = *d++; // OverloadedOperatorKind |
| break; |
| case DeclarationName::CXXLiteralOperatorName: |
| Key.Data = (uint64_t)Reader.getLocalIdentifier(F, ReadUnalignedLE32(d)); |
| break; |
| case DeclarationName::CXXConstructorName: |
| case DeclarationName::CXXDestructorName: |
| case DeclarationName::CXXConversionFunctionName: |
| case DeclarationName::CXXUsingDirective: |
| Key.Data = 0; |
| break; |
| } |
| |
| return Key; |
| } |
| |
| ASTDeclContextNameLookupTrait::data_type |
| ASTDeclContextNameLookupTrait::ReadData(internal_key_type, |
| const unsigned char* d, |
| unsigned DataLen) { |
| using namespace clang::io; |
| unsigned NumDecls = ReadUnalignedLE16(d); |
| LE32DeclID *Start = reinterpret_cast<LE32DeclID *>( |
| const_cast<unsigned char *>(d)); |
| return std::make_pair(Start, Start + NumDecls); |
| } |
| |
| bool ASTReader::ReadDeclContextStorage(ModuleFile &M, |
| BitstreamCursor &Cursor, |
| const std::pair<uint64_t, uint64_t> &Offsets, |
| DeclContextInfo &Info) { |
| SavedStreamPosition SavedPosition(Cursor); |
| // First the lexical decls. |
| if (Offsets.first != 0) { |
| Cursor.JumpToBit(Offsets.first); |
| |
| RecordData Record; |
| StringRef Blob; |
| unsigned Code = Cursor.ReadCode(); |
| unsigned RecCode = Cursor.readRecord(Code, Record, &Blob); |
| if (RecCode != DECL_CONTEXT_LEXICAL) { |
| Error("Expected lexical block"); |
| return true; |
| } |
| |
| Info.LexicalDecls = reinterpret_cast<const KindDeclIDPair*>(Blob.data()); |
| Info.NumLexicalDecls = Blob.size() / sizeof(KindDeclIDPair); |
| } |
| |
| // Now the lookup table. |
| if (Offsets.second != 0) { |
| Cursor.JumpToBit(Offsets.second); |
| |
| RecordData Record; |
| StringRef Blob; |
| unsigned Code = Cursor.ReadCode(); |
| unsigned RecCode = Cursor.readRecord(Code, Record, &Blob); |
| if (RecCode != DECL_CONTEXT_VISIBLE) { |
| Error("Expected visible lookup table block"); |
| return true; |
| } |
| Info.NameLookupTableData |
| = ASTDeclContextNameLookupTable::Create( |
| (const unsigned char *)Blob.data() + Record[0], |
| (const unsigned char *)Blob.data(), |
| ASTDeclContextNameLookupTrait(*this, M)); |
| } |
| |
| return false; |
| } |
| |
| void ASTReader::Error(StringRef Msg) { |
| Error(diag::err_fe_pch_malformed, Msg); |
| } |
| |
| void ASTReader::Error(unsigned DiagID, |
| StringRef Arg1, StringRef Arg2) { |
| if (Diags.isDiagnosticInFlight()) |
| Diags.SetDelayedDiagnostic(DiagID, Arg1, Arg2); |
| else |
| Diag(DiagID) << Arg1 << Arg2; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Source Manager Deserialization |
| //===----------------------------------------------------------------------===// |
| |
| /// \brief Read the line table in the source manager block. |
| /// \returns true if there was an error. |
| bool ASTReader::ParseLineTable(ModuleFile &F, |
| SmallVectorImpl<uint64_t> &Record) { |
| unsigned Idx = 0; |
| LineTableInfo &LineTable = SourceMgr.getLineTable(); |
| |
| // Parse the file names |
| std::map<int, int> FileIDs; |
| for (int I = 0, N = Record[Idx++]; I != N; ++I) { |
| // Extract the file name |
| unsigned FilenameLen = Record[Idx++]; |
| std::string Filename(&Record[Idx], &Record[Idx] + FilenameLen); |
| Idx += FilenameLen; |
| MaybeAddSystemRootToFilename(F, Filename); |
| FileIDs[I] = LineTable.getLineTableFilenameID(Filename); |
| } |
| |
| // Parse the line entries |
| std::vector<LineEntry> Entries; |
| while (Idx < Record.size()) { |
| int FID = Record[Idx++]; |
| assert(FID >= 0 && "Serialized line entries for non-local file."); |
| // Remap FileID from 1-based old view. |
| FID += F.SLocEntryBaseID - 1; |
| |
| // Extract the line entries |
| unsigned NumEntries = Record[Idx++]; |
| assert(NumEntries && "Numentries is 00000"); |
| Entries.clear(); |
| Entries.reserve(NumEntries); |
| for (unsigned I = 0; I != NumEntries; ++I) { |
| unsigned FileOffset = Record[Idx++]; |
| unsigned LineNo = Record[Idx++]; |
| int FilenameID = FileIDs[Record[Idx++]]; |
| SrcMgr::CharacteristicKind FileKind |
| = (SrcMgr::CharacteristicKind)Record[Idx++]; |
| unsigned IncludeOffset = Record[Idx++]; |
| Entries.push_back(LineEntry::get(FileOffset, LineNo, FilenameID, |
| FileKind, IncludeOffset)); |
| } |
| LineTable.AddEntry(FileID::get(FID), Entries); |
| } |
| |
| return false; |
| } |
| |
| /// \brief Read a source manager block |
| bool ASTReader::ReadSourceManagerBlock(ModuleFile &F) { |
| using namespace SrcMgr; |
| |
| BitstreamCursor &SLocEntryCursor = F.SLocEntryCursor; |
| |
| // Set the source-location entry cursor to the current position in |
| // the stream. This cursor will be used to read the contents of the |
| // source manager block initially, and then lazily read |
| // source-location entries as needed. |
| SLocEntryCursor = F.Stream; |
| |
| // The stream itself is going to skip over the source manager block. |
| if (F.Stream.SkipBlock()) { |
| Error("malformed block record in AST file"); |
| return true; |
| } |
| |
| // Enter the source manager block. |
| if (SLocEntryCursor.EnterSubBlock(SOURCE_MANAGER_BLOCK_ID)) { |
| Error("malformed source manager block record in AST file"); |
| return true; |
| } |
| |
| RecordData Record; |
| while (true) { |
| llvm::BitstreamEntry E = SLocEntryCursor.advanceSkippingSubblocks(); |
| |
| switch (E.Kind) { |
| case llvm::BitstreamEntry::SubBlock: // Handled for us already. |
| case llvm::BitstreamEntry::Error: |
| Error("malformed block record in AST file"); |
| return true; |
| case llvm::BitstreamEntry::EndBlock: |
| return false; |
| case llvm::BitstreamEntry::Record: |
| // The interesting case. |
| break; |
| } |
| |
| // Read a record. |
| Record.clear(); |
| StringRef Blob; |
| switch (SLocEntryCursor.readRecord(E.ID, Record, &Blob)) { |
| default: // Default behavior: ignore. |
| break; |
| |
| case SM_SLOC_FILE_ENTRY: |
| case SM_SLOC_BUFFER_ENTRY: |
| case SM_SLOC_EXPANSION_ENTRY: |
| // Once we hit one of the source location entries, we're done. |
| return false; |
| } |
| } |
| } |
| |
| /// \brief If a header file is not found at the path that we expect it to be |
| /// and the PCH file was moved from its original location, try to resolve the |
| /// file by assuming that header+PCH were moved together and the header is in |
| /// the same place relative to the PCH. |
| static std::string |
| resolveFileRelativeToOriginalDir(const std::string &Filename, |
| const std::string &OriginalDir, |
| const std::string &CurrDir) { |
| assert(OriginalDir != CurrDir && |
| "No point trying to resolve the file if the PCH dir didn't change"); |
| using namespace llvm::sys; |
| SmallString<128> filePath(Filename); |
| fs::make_absolute(filePath); |
| assert(path::is_absolute(OriginalDir)); |
| SmallString<128> currPCHPath(CurrDir); |
| |
| path::const_iterator fileDirI = path::begin(path::parent_path(filePath)), |
| fileDirE = path::end(path::parent_path(filePath)); |
| path::const_iterator origDirI = path::begin(OriginalDir), |
| origDirE = path::end(OriginalDir); |
| // Skip the common path components from filePath and OriginalDir. |
| while (fileDirI != fileDirE && origDirI != origDirE && |
| *fileDirI == *origDirI) { |
| ++fileDirI; |
| ++origDirI; |
| } |
| for (; origDirI != origDirE; ++origDirI) |
| path::append(currPCHPath, ".."); |
| path::append(currPCHPath, fileDirI, fileDirE); |
| path::append(currPCHPath, path::filename(Filename)); |
| return currPCHPath.str(); |
| } |
| |
| bool ASTReader::ReadSLocEntry(int ID) { |
| if (ID == 0) |
| return false; |
| |
| if (unsigned(-ID) - 2 >= getTotalNumSLocs() || ID > 0) { |
| Error("source location entry ID out-of-range for AST file"); |
| return true; |
| } |
| |
| ModuleFile *F = GlobalSLocEntryMap.find(-ID)->second; |
| F->SLocEntryCursor.JumpToBit(F->SLocEntryOffsets[ID - F->SLocEntryBaseID]); |
| BitstreamCursor &SLocEntryCursor = F->SLocEntryCursor; |
| unsigned BaseOffset = F->SLocEntryBaseOffset; |
| |
| ++NumSLocEntriesRead; |
| llvm::BitstreamEntry Entry = SLocEntryCursor.advance(); |
| if (Entry.Kind != llvm::BitstreamEntry::Record) { |
| Error("incorrectly-formatted source location entry in AST file"); |
| return true; |
| } |
| |
| RecordData Record; |
| StringRef Blob; |
| switch (SLocEntryCursor.readRecord(Entry.ID, Record, &Blob)) { |
| default: |
| Error("incorrectly-formatted source location entry in AST file"); |
| return true; |
| |
| case SM_SLOC_FILE_ENTRY: { |
| // We will detect whether a file changed and return 'Failure' for it, but |
| // we will also try to fail gracefully by setting up the SLocEntry. |
| unsigned InputID = Record[4]; |
| InputFile IF = getInputFile(*F, InputID); |
| const FileEntry *File = IF.getFile(); |
| bool OverriddenBuffer = IF.isOverridden(); |
| |
| // Note that we only check if a File was returned. If it was out-of-date |
| // we have complained but we will continue creating a FileID to recover |
| // gracefully. |
| if (!File) |
| return true; |
| |
| SourceLocation IncludeLoc = ReadSourceLocation(*F, Record[1]); |
| if (IncludeLoc.isInvalid() && F->Kind != MK_MainFile) { |
| // This is the module's main file. |
| IncludeLoc = getImportLocation(F); |
| } |
| SrcMgr::CharacteristicKind |
| FileCharacter = (SrcMgr::CharacteristicKind)Record[2]; |
| FileID FID = SourceMgr.createFileID(File, IncludeLoc, FileCharacter, |
| ID, BaseOffset + Record[0]); |
| SrcMgr::FileInfo &FileInfo = |
| const_cast<SrcMgr::FileInfo&>(SourceMgr.getSLocEntry(FID).getFile()); |
| FileInfo.NumCreatedFIDs = Record[5]; |
| if (Record[3]) |
| FileInfo.setHasLineDirectives(); |
| |
| const DeclID *FirstDecl = F->FileSortedDecls + Record[6]; |
| unsigned NumFileDecls = Record[7]; |
| if (NumFileDecls) { |
| assert(F->FileSortedDecls && "FILE_SORTED_DECLS not encountered yet ?"); |
| FileDeclIDs[FID] = FileDeclsInfo(F, llvm::makeArrayRef(FirstDecl, |
| NumFileDecls)); |
| } |
| |
| const SrcMgr::ContentCache *ContentCache |
| = SourceMgr.getOrCreateContentCache(File, |
| /*isSystemFile=*/FileCharacter != SrcMgr::C_User); |
| if (OverriddenBuffer && !ContentCache->BufferOverridden && |
| ContentCache->ContentsEntry == ContentCache->OrigEntry) { |
| unsigned Code = SLocEntryCursor.ReadCode(); |
| Record.clear(); |
| unsigned RecCode = SLocEntryCursor.readRecord(Code, Record, &Blob); |
| |
| if (RecCode != SM_SLOC_BUFFER_BLOB) { |
| Error("AST record has invalid code"); |
| return true; |
| } |
| |
| llvm::MemoryBuffer *Buffer |
| = llvm::MemoryBuffer::getMemBuffer(Blob.drop_back(1), File->getName()); |
| SourceMgr.overrideFileContents(File, Buffer); |
| } |
| |
| break; |
| } |
| |
| case SM_SLOC_BUFFER_ENTRY: { |
| const char *Name = Blob.data(); |
| unsigned Offset = Record[0]; |
| SrcMgr::CharacteristicKind |
| FileCharacter = (SrcMgr::CharacteristicKind)Record[2]; |
| SourceLocation IncludeLoc = ReadSourceLocation(*F, Record[1]); |
| if (IncludeLoc.isInvalid() && F->Kind == MK_Module) { |
| IncludeLoc = getImportLocation(F); |
| } |
| unsigned Code = SLocEntryCursor.ReadCode(); |
| Record.clear(); |
| unsigned RecCode |
| = SLocEntryCursor.readRecord(Code, Record, &Blob); |
| |
| if (RecCode != SM_SLOC_BUFFER_BLOB) { |
| Error("AST record has invalid code"); |
| return true; |
| } |
| |
| llvm::MemoryBuffer *Buffer |
| = llvm::MemoryBuffer::getMemBuffer(Blob.drop_back(1), Name); |
| SourceMgr.createFileIDForMemBuffer(Buffer, FileCharacter, ID, |
| BaseOffset + Offset, IncludeLoc); |
| break; |
| } |
| |
| case SM_SLOC_EXPANSION_ENTRY: { |
| SourceLocation SpellingLoc = ReadSourceLocation(*F, Record[1]); |
| SourceMgr.createExpansionLoc(SpellingLoc, |
| ReadSourceLocation(*F, Record[2]), |
| ReadSourceLocation(*F, Record[3]), |
| Record[4], |
| ID, |
| BaseOffset + Record[0]); |
| break; |
| } |
| } |
| |
| return false; |
| } |
| |
| std::pair<SourceLocation, StringRef> ASTReader::getModuleImportLoc(int ID) { |
| if (ID == 0) |
| return std::make_pair(SourceLocation(), ""); |
| |
| if (unsigned(-ID) - 2 >= getTotalNumSLocs() || ID > 0) { |
| Error("source location entry ID out-of-range for AST file"); |
| return std::make_pair(SourceLocation(), ""); |
| } |
| |
| // Find which module file this entry lands in. |
| ModuleFile *M = GlobalSLocEntryMap.find(-ID)->second; |
| if (M->Kind != MK_Module) |
| return std::make_pair(SourceLocation(), ""); |
| |
| // FIXME: Can we map this down to a particular submodule? That would be |
| // ideal. |
| return std::make_pair(M->ImportLoc, llvm::sys::path::stem(M->FileName)); |
| } |
| |
| /// \brief Find the location where the module F is imported. |
| SourceLocation ASTReader::getImportLocation(ModuleFile *F) { |
| if (F->ImportLoc.isValid()) |
| return F->ImportLoc; |
| |
| // Otherwise we have a PCH. It's considered to be "imported" at the first |
| // location of its includer. |
| if (F->ImportedBy.empty() || !F->ImportedBy[0]) { |
| // Main file is the importer. We assume that it is the first entry in the |
| // entry table. We can't ask the manager, because at the time of PCH loading |
| // the main file entry doesn't exist yet. |
| // The very first entry is the invalid instantiation loc, which takes up |
| // offsets 0 and 1. |
| return SourceLocation::getFromRawEncoding(2U); |
| } |
| //return F->Loaders[0]->FirstLoc; |
| return F->ImportedBy[0]->FirstLoc; |
| } |
| |
| /// ReadBlockAbbrevs - Enter a subblock of the specified BlockID with the |
| /// specified cursor. Read the abbreviations that are at the top of the block |
| /// and then leave the cursor pointing into the block. |
| bool ASTReader::ReadBlockAbbrevs(BitstreamCursor &Cursor, unsigned BlockID) { |
| if (Cursor.EnterSubBlock(BlockID)) { |
| Error("malformed block record in AST file"); |
| return Failure; |
| } |
| |
| while (true) { |
| uint64_t Offset = Cursor.GetCurrentBitNo(); |
| unsigned Code = Cursor.ReadCode(); |
| |
| // We expect all abbrevs to be at the start of the block. |
| if (Code != llvm::bitc::DEFINE_ABBREV) { |
| Cursor.JumpToBit(Offset); |
| return false; |
| } |
| Cursor.ReadAbbrevRecord(); |
| } |
| } |
| |
| Token ASTReader::ReadToken(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx) { |
| Token Tok; |
| Tok.startToken(); |
| Tok.setLocation(ReadSourceLocation(F, Record, Idx)); |
| Tok.setLength(Record[Idx++]); |
| if (IdentifierInfo *II = getLocalIdentifier(F, Record[Idx++])) |
| Tok.setIdentifierInfo(II); |
| Tok.setKind((tok::TokenKind)Record[Idx++]); |
| Tok.setFlag((Token::TokenFlags)Record[Idx++]); |
| return Tok; |
| } |
| |
| MacroInfo *ASTReader::ReadMacroRecord(ModuleFile &F, uint64_t Offset) { |
| BitstreamCursor &Stream = F.MacroCursor; |
| |
| // Keep track of where we are in the stream, then jump back there |
| // after reading this macro. |
| SavedStreamPosition SavedPosition(Stream); |
| |
| Stream.JumpToBit(Offset); |
| RecordData Record; |
| SmallVector<IdentifierInfo*, 16> MacroArgs; |
| MacroInfo *Macro = 0; |
| |
| while (true) { |
| // Advance to the next record, but if we get to the end of the block, don't |
| // pop it (removing all the abbreviations from the cursor) since we want to |
| // be able to reseek within the block and read entries. |
| unsigned Flags = BitstreamCursor::AF_DontPopBlockAtEnd; |
| llvm::BitstreamEntry Entry = Stream.advanceSkippingSubblocks(Flags); |
| |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::SubBlock: // Handled for us already. |
| case llvm::BitstreamEntry::Error: |
| Error("malformed block record in AST file"); |
| return Macro; |
| case llvm::BitstreamEntry::EndBlock: |
| return Macro; |
| case llvm::BitstreamEntry::Record: |
| // The interesting case. |
| break; |
| } |
| |
| // Read a record. |
| Record.clear(); |
| PreprocessorRecordTypes RecType = |
| (PreprocessorRecordTypes)Stream.readRecord(Entry.ID, Record); |
| switch (RecType) { |
| case PP_MACRO_DIRECTIVE_HISTORY: |
| return Macro; |
| |
| case PP_MACRO_OBJECT_LIKE: |
| case PP_MACRO_FUNCTION_LIKE: { |
| // If we already have a macro, that means that we've hit the end |
| // of the definition of the macro we were looking for. We're |
| // done. |
| if (Macro) |
| return Macro; |
| |
| unsigned NextIndex = 1; // Skip identifier ID. |
| SubmoduleID SubModID = getGlobalSubmoduleID(F, Record[NextIndex++]); |
| SourceLocation Loc = ReadSourceLocation(F, Record, NextIndex); |
| MacroInfo *MI = PP.AllocateDeserializedMacroInfo(Loc, SubModID); |
| MI->setDefinitionEndLoc(ReadSourceLocation(F, Record, NextIndex)); |
| MI->setIsUsed(Record[NextIndex++]); |
| |
| if (RecType == PP_MACRO_FUNCTION_LIKE) { |
| // Decode function-like macro info. |
| bool isC99VarArgs = Record[NextIndex++]; |
| bool isGNUVarArgs = Record[NextIndex++]; |
| bool hasCommaPasting = Record[NextIndex++]; |
| MacroArgs.clear(); |
| unsigned NumArgs = Record[NextIndex++]; |
| for (unsigned i = 0; i != NumArgs; ++i) |
| MacroArgs.push_back(getLocalIdentifier(F, Record[NextIndex++])); |
| |
| // Install function-like macro info. |
| MI->setIsFunctionLike(); |
| if (isC99VarArgs) MI->setIsC99Varargs(); |
| if (isGNUVarArgs) MI->setIsGNUVarargs(); |
| if (hasCommaPasting) MI->setHasCommaPasting(); |
| MI->setArgumentList(MacroArgs.data(), MacroArgs.size(), |
| PP.getPreprocessorAllocator()); |
| } |
| |
| // Remember that we saw this macro last so that we add the tokens that |
| // form its body to it. |
| Macro = MI; |
| |
| if (NextIndex + 1 == Record.size() && PP.getPreprocessingRecord() && |
| Record[NextIndex]) { |
| // We have a macro definition. Register the association |
| PreprocessedEntityID |
| GlobalID = getGlobalPreprocessedEntityID(F, Record[NextIndex]); |
| PreprocessingRecord &PPRec = *PP.getPreprocessingRecord(); |
| PreprocessingRecord::PPEntityID |
| PPID = PPRec.getPPEntityID(GlobalID-1, /*isLoaded=*/true); |
| MacroDefinition *PPDef = |
| cast_or_null<MacroDefinition>(PPRec.getPreprocessedEntity(PPID)); |
| if (PPDef) |
| PPRec.RegisterMacroDefinition(Macro, PPDef); |
| } |
| |
| ++NumMacrosRead; |
| break; |
| } |
| |
| case PP_TOKEN: { |
| // If we see a TOKEN before a PP_MACRO_*, then the file is |
| // erroneous, just pretend we didn't see this. |
| if (Macro == 0) break; |
| |
| unsigned Idx = 0; |
| Token Tok = ReadToken(F, Record, Idx); |
| Macro->AddTokenToBody(Tok); |
| break; |
| } |
| } |
| } |
| } |
| |
| PreprocessedEntityID |
| ASTReader::getGlobalPreprocessedEntityID(ModuleFile &M, unsigned LocalID) const { |
| ContinuousRangeMap<uint32_t, int, 2>::const_iterator |
| I = M.PreprocessedEntityRemap.find(LocalID - NUM_PREDEF_PP_ENTITY_IDS); |
| assert(I != M.PreprocessedEntityRemap.end() |
| && "Invalid index into preprocessed entity index remap"); |
| |
| return LocalID + I->second; |
| } |
| |
| unsigned HeaderFileInfoTrait::ComputeHash(internal_key_ref ikey) { |
| return llvm::hash_combine(ikey.Size, ikey.ModTime); |
| } |
| |
| HeaderFileInfoTrait::internal_key_type |
| HeaderFileInfoTrait::GetInternalKey(const FileEntry *FE) { |
| internal_key_type ikey = { FE->getSize(), FE->getModificationTime(), |
| FE->getName() }; |
| return ikey; |
| } |
| |
| bool HeaderFileInfoTrait::EqualKey(internal_key_ref a, internal_key_ref b) { |
| if (a.Size != b.Size || a.ModTime != b.ModTime) |
| return false; |
| |
| if (strcmp(a.Filename, b.Filename) == 0) |
| return true; |
| |
| // Determine whether the actual files are equivalent. |
| FileManager &FileMgr = Reader.getFileManager(); |
| const FileEntry *FEA = FileMgr.getFile(a.Filename); |
| const FileEntry *FEB = FileMgr.getFile(b.Filename); |
| return (FEA && FEA == FEB); |
| } |
| |
| std::pair<unsigned, unsigned> |
| HeaderFileInfoTrait::ReadKeyDataLength(const unsigned char*& d) { |
| unsigned KeyLen = (unsigned) clang::io::ReadUnalignedLE16(d); |
| unsigned DataLen = (unsigned) *d++; |
| return std::make_pair(KeyLen, DataLen); |
| } |
| |
| HeaderFileInfoTrait::internal_key_type |
| HeaderFileInfoTrait::ReadKey(const unsigned char *d, unsigned) { |
| internal_key_type ikey; |
| ikey.Size = off_t(clang::io::ReadUnalignedLE64(d)); |
| ikey.ModTime = time_t(clang::io::ReadUnalignedLE64(d)); |
| ikey.Filename = (const char *)d; |
| return ikey; |
| } |
| |
| HeaderFileInfoTrait::data_type |
| HeaderFileInfoTrait::ReadData(internal_key_ref key, const unsigned char *d, |
| unsigned DataLen) { |
| const unsigned char *End = d + DataLen; |
| using namespace clang::io; |
| HeaderFileInfo HFI; |
| unsigned Flags = *d++; |
| HFI.isImport = (Flags >> 5) & 0x01; |
| HFI.isPragmaOnce = (Flags >> 4) & 0x01; |
| HFI.DirInfo = (Flags >> 2) & 0x03; |
| HFI.Resolved = (Flags >> 1) & 0x01; |
| HFI.IndexHeaderMapHeader = Flags & 0x01; |
| HFI.NumIncludes = ReadUnalignedLE16(d); |
| HFI.ControllingMacroID = Reader.getGlobalIdentifierID(M, |
| ReadUnalignedLE32(d)); |
| if (unsigned FrameworkOffset = ReadUnalignedLE32(d)) { |
| // The framework offset is 1 greater than the actual offset, |
| // since 0 is used as an indicator for "no framework name". |
| StringRef FrameworkName(FrameworkStrings + FrameworkOffset - 1); |
| HFI.Framework = HS->getUniqueFrameworkName(FrameworkName); |
| } |
| |
| if (d != End) { |
| uint32_t LocalSMID = ReadUnalignedLE32(d); |
| if (LocalSMID) { |
| // This header is part of a module. Associate it with the module to enable |
| // implicit module import. |
| SubmoduleID GlobalSMID = Reader.getGlobalSubmoduleID(M, LocalSMID); |
| Module *Mod = Reader.getSubmodule(GlobalSMID); |
| HFI.isModuleHeader = true; |
| FileManager &FileMgr = Reader.getFileManager(); |
| ModuleMap &ModMap = |
| Reader.getPreprocessor().getHeaderSearchInfo().getModuleMap(); |
| ModMap.addHeader(Mod, FileMgr.getFile(key.Filename), /*Excluded=*/false); |
| } |
| } |
| |
| assert(End == d && "Wrong data length in HeaderFileInfo deserialization"); |
| (void)End; |
| |
| // This HeaderFileInfo was externally loaded. |
| HFI.External = true; |
| return HFI; |
| } |
| |
| void ASTReader::addPendingMacroFromModule(IdentifierInfo *II, |
| ModuleFile *M, |
| GlobalMacroID GMacID, |
| SourceLocation ImportLoc) { |
| assert(NumCurrentElementsDeserializing > 0 &&"Missing deserialization guard"); |
| PendingMacroIDs[II].push_back(PendingMacroInfo(M, GMacID, ImportLoc)); |
| } |
| |
| void ASTReader::addPendingMacroFromPCH(IdentifierInfo *II, |
| ModuleFile *M, |
| uint64_t MacroDirectivesOffset) { |
| assert(NumCurrentElementsDeserializing > 0 &&"Missing deserialization guard"); |
| PendingMacroIDs[II].push_back(PendingMacroInfo(M, MacroDirectivesOffset)); |
| } |
| |
| void ASTReader::ReadDefinedMacros() { |
| // Note that we are loading defined macros. |
| Deserializing Macros(this); |
| |
| for (ModuleReverseIterator I = ModuleMgr.rbegin(), |
| E = ModuleMgr.rend(); I != E; ++I) { |
| BitstreamCursor &MacroCursor = (*I)->MacroCursor; |
| |
| // If there was no preprocessor block, skip this file. |
| if (!MacroCursor.getBitStreamReader()) |
| continue; |
| |
| BitstreamCursor Cursor = MacroCursor; |
| Cursor.JumpToBit((*I)->MacroStartOffset); |
| |
| RecordData Record; |
| while (true) { |
| llvm::BitstreamEntry E = Cursor.advanceSkippingSubblocks(); |
| |
| switch (E.Kind) { |
| case llvm::BitstreamEntry::SubBlock: // Handled for us already. |
| case llvm::BitstreamEntry::Error: |
| Error("malformed block record in AST file"); |
| return; |
| case llvm::BitstreamEntry::EndBlock: |
| goto NextCursor; |
| |
| case llvm::BitstreamEntry::Record: |
| Record.clear(); |
| switch (Cursor.readRecord(E.ID, Record)) { |
| default: // Default behavior: ignore. |
| break; |
| |
| case PP_MACRO_OBJECT_LIKE: |
| case PP_MACRO_FUNCTION_LIKE: |
| getLocalIdentifier(**I, Record[0]); |
| break; |
| |
| case PP_TOKEN: |
| // Ignore tokens. |
| break; |
| } |
| break; |
| } |
| } |
| NextCursor: ; |
| } |
| } |
| |
| namespace { |
| /// \brief Visitor class used to look up identifirs in an AST file. |
| class IdentifierLookupVisitor { |
| StringRef Name; |
| unsigned PriorGeneration; |
| unsigned &NumIdentifierLookups; |
| unsigned &NumIdentifierLookupHits; |
| IdentifierInfo *Found; |
| |
| public: |
| IdentifierLookupVisitor(StringRef Name, unsigned PriorGeneration, |
| unsigned &NumIdentifierLookups, |
| unsigned &NumIdentifierLookupHits) |
| : Name(Name), PriorGeneration(PriorGeneration), |
| NumIdentifierLookups(NumIdentifierLookups), |
| NumIdentifierLookupHits(NumIdentifierLookupHits), |
| Found() |
| { |
| } |
| |
| static bool visit(ModuleFile &M, void *UserData) { |
| IdentifierLookupVisitor *This |
| = static_cast<IdentifierLookupVisitor *>(UserData); |
| |
| // If we've already searched this module file, skip it now. |
| if (M.Generation <= This->PriorGeneration) |
| return true; |
| |
| ASTIdentifierLookupTable *IdTable |
| = (ASTIdentifierLookupTable *)M.IdentifierLookupTable; |
| if (!IdTable) |
| return false; |
| |
| ASTIdentifierLookupTrait Trait(IdTable->getInfoObj().getReader(), |
| M, This->Found); |
| ++This->NumIdentifierLookups; |
| ASTIdentifierLookupTable::iterator Pos = IdTable->find(This->Name,&Trait); |
| if (Pos == IdTable->end()) |
| return false; |
| |
| // Dereferencing the iterator has the effect of building the |
| // IdentifierInfo node and populating it with the various |
| // declarations it needs. |
| ++This->NumIdentifierLookupHits; |
| This->Found = *Pos; |
| return true; |
| } |
| |
| // \brief Retrieve the identifier info found within the module |
| // files. |
| IdentifierInfo *getIdentifierInfo() const { return Found; } |
| }; |
| } |
| |
| void ASTReader::updateOutOfDateIdentifier(IdentifierInfo &II) { |
| // Note that we are loading an identifier. |
| Deserializing AnIdentifier(this); |
| |
| unsigned PriorGeneration = 0; |
| if (getContext().getLangOpts().Modules) |
| PriorGeneration = IdentifierGeneration[&II]; |
| |
| // If there is a global index, look there first to determine which modules |
| // provably do not have any results for this identifier. |
| GlobalModuleIndex::HitSet Hits; |
| GlobalModuleIndex::HitSet *HitsPtr = 0; |
| if (!loadGlobalIndex()) { |
| if (GlobalIndex->lookupIdentifier(II.getName(), Hits)) { |
| HitsPtr = &Hits; |
| } |
| } |
| |
| IdentifierLookupVisitor Visitor(II.getName(), PriorGeneration, |
| NumIdentifierLookups, |
| NumIdentifierLookupHits); |
| ModuleMgr.visit(IdentifierLookupVisitor::visit, &Visitor, HitsPtr); |
| markIdentifierUpToDate(&II); |
| } |
| |
| void ASTReader::markIdentifierUpToDate(IdentifierInfo *II) { |
| if (!II) |
| return; |
| |
| II->setOutOfDate(false); |
| |
| // Update the generation for this identifier. |
| if (getContext().getLangOpts().Modules) |
| IdentifierGeneration[II] = CurrentGeneration; |
| } |
| |
| void ASTReader::resolvePendingMacro(IdentifierInfo *II, |
| const PendingMacroInfo &PMInfo) { |
| assert(II); |
| |
| if (PMInfo.M->Kind != MK_Module) { |
| installPCHMacroDirectives(II, *PMInfo.M, |
| PMInfo.PCHMacroData.MacroDirectivesOffset); |
| return; |
| } |
| |
| // Module Macro. |
| |
| GlobalMacroID GMacID = PMInfo.ModuleMacroData.GMacID; |
| SourceLocation ImportLoc = |
| SourceLocation::getFromRawEncoding(PMInfo.ModuleMacroData.ImportLoc); |
| |
| assert(GMacID); |
| // If this macro has already been loaded, don't do so again. |
| if (MacrosLoaded[GMacID - NUM_PREDEF_MACRO_IDS]) |
| return; |
| |
| MacroInfo *MI = getMacro(GMacID); |
| SubmoduleID SubModID = MI->getOwningModuleID(); |
| MacroDirective *MD = PP.AllocateDefMacroDirective(MI, ImportLoc, |
| /*isImported=*/true); |
| |
| // Determine whether this macro definition is visible. |
| bool Hidden = false; |
| Module *Owner = 0; |
| if (SubModID) { |
| if ((Owner = getSubmodule(SubModID))) { |
| if (Owner->NameVisibility == Module::Hidden) { |
| // The owning module is not visible, and this macro definition |
| // should not be, either. |
| Hidden = true; |
| |
| // Note that this macro definition was hidden because its owning |
| // module is not yet visible. |
| HiddenNamesMap[Owner].push_back(HiddenName(II, MD)); |
| } |
| } |
| } |
| |
| if (!Hidden) |
| installImportedMacro(II, MD, Owner); |
| } |
| |
| void ASTReader::installPCHMacroDirectives(IdentifierInfo *II, |
| ModuleFile &M, uint64_t Offset) { |
| assert(M.Kind != MK_Module); |
| |
| BitstreamCursor &Cursor = M.MacroCursor; |
| SavedStreamPosition SavedPosition(Cursor); |
| Cursor.JumpToBit(Offset); |
| |
| llvm::BitstreamEntry Entry = |
| Cursor.advance(BitstreamCursor::AF_DontPopBlockAtEnd); |
| if (Entry.Kind != llvm::BitstreamEntry::Record) { |
| Error("malformed block record in AST file"); |
| return; |
| } |
| |
| RecordData Record; |
| PreprocessorRecordTypes RecType = |
| (PreprocessorRecordTypes)Cursor.readRecord(Entry.ID, Record); |
| if (RecType != PP_MACRO_DIRECTIVE_HISTORY) { |
| Error("malformed block record in AST file"); |
| return; |
| } |
| |
| // Deserialize the macro directives history in reverse source-order. |
| MacroDirective *Latest = 0, *Earliest = 0; |
| unsigned Idx = 0, N = Record.size(); |
| while (Idx < N) { |
| MacroDirective *MD = 0; |
| SourceLocation Loc = ReadSourceLocation(M, Record, Idx); |
| MacroDirective::Kind K = (MacroDirective::Kind)Record[Idx++]; |
| switch (K) { |
| case MacroDirective::MD_Define: { |
| GlobalMacroID GMacID = getGlobalMacroID(M, Record[Idx++]); |
| MacroInfo *MI = getMacro(GMacID); |
| bool isImported = Record[Idx++]; |
| bool isAmbiguous = Record[Idx++]; |
| DefMacroDirective *DefMD = |
| PP.AllocateDefMacroDirective(MI, Loc, isImported); |
| DefMD->setAmbiguous(isAmbiguous); |
| MD = DefMD; |
| break; |
| } |
| case MacroDirective::MD_Undefine: |
| MD = PP.AllocateUndefMacroDirective(Loc); |
| break; |
| case MacroDirective::MD_Visibility: { |
| bool isPublic = Record[Idx++]; |
| MD = PP.AllocateVisibilityMacroDirective(Loc, isPublic); |
| break; |
| } |
| } |
| |
| if (!Latest) |
| Latest = MD; |
| if (Earliest) |
| Earliest->setPrevious(MD); |
| Earliest = MD; |
| } |
| |
| PP.setLoadedMacroDirective(II, Latest); |
| } |
| |
| /// \brief For the given macro definitions, check if they are both in system |
| /// modules. |
| static bool areDefinedInSystemModules(MacroInfo *PrevMI, MacroInfo *NewMI, |
| Module *NewOwner, ASTReader &Reader) { |
| assert(PrevMI && NewMI); |
| if (!NewOwner) |
| return false; |
| Module *PrevOwner = 0; |
| if (SubmoduleID PrevModID = PrevMI->getOwningModuleID()) |
| PrevOwner = Reader.getSubmodule(PrevModID); |
| if (!PrevOwner) |
| return false; |
| if (PrevOwner == NewOwner) |
| return false; |
| return PrevOwner->IsSystem && NewOwner->IsSystem; |
| } |
| |
| void ASTReader::installImportedMacro(IdentifierInfo *II, MacroDirective *MD, |
| Module *Owner) { |
| assert(II && MD); |
| |
| DefMacroDirective *DefMD = cast<DefMacroDirective>(MD); |
| MacroDirective *Prev = PP.getMacroDirective(II); |
| if (Prev) { |
| MacroDirective::DefInfo PrevDef = Prev->getDefinition(); |
| MacroInfo *PrevMI = PrevDef.getMacroInfo(); |
| MacroInfo *NewMI = DefMD->getInfo(); |
| if (NewMI != PrevMI && !PrevMI->isIdenticalTo(*NewMI, PP, |
| /*Syntactically=*/true)) { |
| // Before marking the macros as ambiguous, check if this is a case where |
| // both macros are in system headers. If so, we trust that the system |
| // did not get it wrong. This also handles cases where Clang's own |
| // headers have a different spelling of certain system macros: |
| // #define LONG_MAX __LONG_MAX__ (clang's limits.h) |
| // #define LONG_MAX 0x7fffffffffffffffL (system's limits.h) |
| if (!areDefinedInSystemModules(PrevMI, NewMI, Owner, *this)) { |
| PrevDef.getDirective()->setAmbiguous(true); |
| DefMD->setAmbiguous(true); |
| } |
| } |
| } |
| |
| PP.appendMacroDirective(II, MD); |
| } |
| |
| InputFile ASTReader::getInputFile(ModuleFile &F, unsigned ID, bool Complain) { |
| // If this ID is bogus, just return an empty input file. |
| if (ID == 0 || ID > F.InputFilesLoaded.size()) |
| return InputFile(); |
| |
| // If we've already loaded this input file, return it. |
| if (F.InputFilesLoaded[ID-1].getFile()) |
| return F.InputFilesLoaded[ID-1]; |
| |
| // Go find this input file. |
| BitstreamCursor &Cursor = F.InputFilesCursor; |
| SavedStreamPosition SavedPosition(Cursor); |
| Cursor.JumpToBit(F.InputFileOffsets[ID-1]); |
| |
| unsigned Code = Cursor.ReadCode(); |
| RecordData Record; |
| StringRef Blob; |
| switch ((InputFileRecordTypes)Cursor.readRecord(Code, Record, &Blob)) { |
| case INPUT_FILE: { |
| unsigned StoredID = Record[0]; |
| assert(ID == StoredID && "Bogus stored ID or offset"); |
| (void)StoredID; |
| off_t StoredSize = (off_t)Record[1]; |
| time_t StoredTime = (time_t)Record[2]; |
| bool Overridden = (bool)Record[3]; |
| |
| // Get the file entry for this input file. |
| StringRef OrigFilename = Blob; |
| std::string Filename = OrigFilename; |
| MaybeAddSystemRootToFilename(F, Filename); |
| const FileEntry *File |
| = Overridden? FileMgr.getVirtualFile(Filename, StoredSize, StoredTime) |
| : FileMgr.getFile(Filename, /*OpenFile=*/false); |
| |
| // If we didn't find the file, resolve it relative to the |
| // original directory from which this AST file was created. |
| if (File == 0 && !F.OriginalDir.empty() && !CurrentDir.empty() && |
| F.OriginalDir != CurrentDir) { |
| std::string Resolved = resolveFileRelativeToOriginalDir(Filename, |
| F.OriginalDir, |
| CurrentDir); |
| if (!Resolved.empty()) |
| File = FileMgr.getFile(Resolved); |
| } |
| |
| // For an overridden file, create a virtual file with the stored |
| // size/timestamp. |
| if (Overridden && File == 0) { |
| File = FileMgr.getVirtualFile(Filename, StoredSize, StoredTime); |
| } |
| |
| if (File == 0) { |
| if (Complain) { |
| std::string ErrorStr = "could not find file '"; |
| ErrorStr += Filename; |
| ErrorStr += "' referenced by AST file"; |
| Error(ErrorStr.c_str()); |
| } |
| return InputFile(); |
| } |
| |
| // Check if there was a request to override the contents of the file |
| // that was part of the precompiled header. Overridding such a file |
| // can lead to problems when lexing using the source locations from the |
| // PCH. |
| SourceManager &SM = getSourceManager(); |
| if (!Overridden && SM.isFileOverridden(File)) { |
| if (Complain) |
| Error(diag::err_fe_pch_file_overridden, Filename); |
| // After emitting the diagnostic, recover by disabling the override so |
| // that the original file will be used. |
| SM.disableFileContentsOverride(File); |
| // The FileEntry is a virtual file entry with the size of the contents |
| // that would override the original contents. Set it to the original's |
| // size/time. |
| FileMgr.modifyFileEntry(const_cast<FileEntry*>(File), |
| StoredSize, StoredTime); |
| } |
| |
| bool IsOutOfDate = false; |
| |
| // For an overridden file, there is nothing to validate. |
| if (!Overridden && (StoredSize != File->getSize() |
| #if !defined(LLVM_ON_WIN32) |
| // In our regression testing, the Windows file system seems to |
| // have inconsistent modification times that sometimes |
| // erroneously trigger this error-handling path. |
| || StoredTime != File->getModificationTime() |
| #endif |
| )) { |
| if (Complain) { |
| Error(diag::err_fe_pch_file_modified, Filename, F.FileName); |
| } |
| |
| IsOutOfDate = true; |
| } |
| |
| InputFile IF = InputFile(File, Overridden, IsOutOfDate); |
| |
| // Note that we've loaded this input file. |
| F.InputFilesLoaded[ID-1] = IF; |
| return IF; |
| } |
| } |
| |
| return InputFile(); |
| } |
| |
| const FileEntry *ASTReader::getFileEntry(StringRef filenameStrRef) { |
| ModuleFile &M = ModuleMgr.getPrimaryModule(); |
| std::string Filename = filenameStrRef; |
| MaybeAddSystemRootToFilename(M, Filename); |
| const FileEntry *File = FileMgr.getFile(Filename); |
| if (File == 0 && !M.OriginalDir.empty() && !CurrentDir.empty() && |
| M.OriginalDir != CurrentDir) { |
| std::string resolved = resolveFileRelativeToOriginalDir(Filename, |
| M.OriginalDir, |
| CurrentDir); |
| if (!resolved.empty()) |
| File = FileMgr.getFile(resolved); |
| } |
| |
| return File; |
| } |
| |
| /// \brief If we are loading a relocatable PCH file, and the filename is |
| /// not an absolute path, add the system root to the beginning of the file |
| /// name. |
| void ASTReader::MaybeAddSystemRootToFilename(ModuleFile &M, |
| std::string &Filename) { |
| // If this is not a relocatable PCH file, there's nothing to do. |
| if (!M.RelocatablePCH) |
| return; |
| |
| if (Filename.empty() || llvm::sys::path::is_absolute(Filename)) |
| return; |
| |
| if (isysroot.empty()) { |
| // If no system root was given, default to '/' |
| Filename.insert(Filename.begin(), '/'); |
| return; |
| } |
| |
| unsigned Length = isysroot.size(); |
| if (isysroot[Length - 1] != '/') |
| Filename.insert(Filename.begin(), '/'); |
| |
| Filename.insert(Filename.begin(), isysroot.begin(), isysroot.end()); |
| } |
| |
| ASTReader::ASTReadResult |
| ASTReader::ReadControlBlock(ModuleFile &F, |
| SmallVectorImpl<ImportedModule> &Loaded, |
| unsigned ClientLoadCapabilities) { |
| BitstreamCursor &Stream = F.Stream; |
| |
| if (Stream.EnterSubBlock(CONTROL_BLOCK_ID)) { |
| Error("malformed block record in AST file"); |
| return Failure; |
| } |
| |
| // Read all of the records and blocks in the control block. |
| RecordData Record; |
| while (1) { |
| llvm::BitstreamEntry Entry = Stream.advance(); |
| |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::Error: |
| Error("malformed block record in AST file"); |
| return Failure; |
| case llvm::BitstreamEntry::EndBlock: |
| // Validate all of the non-system input files. |
| if (!DisableValidation) { |
| bool Complain = (ClientLoadCapabilities & ARR_OutOfDate) == 0; |
| // All user input files reside at the index range [0, Record[1]). |
| // Record is the one from INPUT_FILE_OFFSETS. |
| for (unsigned I = 0, N = Record[1]; I < N; ++I) { |
| InputFile IF = getInputFile(F, I+1, Complain); |
| if (!IF.getFile() || IF.isOutOfDate()) |
| return OutOfDate; |
| } |
| } |
| return Success; |
| |
| case llvm::BitstreamEntry::SubBlock: |
| switch (Entry.ID) { |
| case INPUT_FILES_BLOCK_ID: |
| F.InputFilesCursor = Stream; |
| if (Stream.SkipBlock() || // Skip with the main cursor |
| // Read the abbreviations |
| ReadBlockAbbrevs(F.InputFilesCursor, INPUT_FILES_BLOCK_ID)) { |
| Error("malformed block record in AST file"); |
| return Failure; |
| } |
| continue; |
| |
| default: |
| if (Stream.SkipBlock()) { |
| Error("malformed block record in AST file"); |
| return Failure; |
| } |
| continue; |
| } |
| |
| case llvm::BitstreamEntry::Record: |
| // The interesting case. |
| break; |
| } |
| |
| // Read and process a record. |
| Record.clear(); |
| StringRef Blob; |
| switch ((ControlRecordTypes)Stream.readRecord(Entry.ID, Record, &Blob)) { |
| case METADATA: { |
| if (Record[0] != VERSION_MAJOR && !DisableValidation) { |
| if ((ClientLoadCapabilities & ARR_VersionMismatch) == 0) |
| Diag(Record[0] < VERSION_MAJOR? diag::warn_pch_version_too_old |
| : diag::warn_pch_version_too_new); |
| return VersionMismatch; |
| } |
| |
| bool hasErrors = Record[5]; |
| if (hasErrors && !DisableValidation && !AllowASTWithCompilerErrors) { |
| Diag(diag::err_pch_with_compiler_errors); |
| return HadErrors; |
| } |
| |
| F.RelocatablePCH = Record[4]; |
| |
| const std::string &CurBranch = getClangFullRepositoryVersion(); |
| StringRef ASTBranch = Blob; |
| if (StringRef(CurBranch) != ASTBranch && !DisableValidation) { |
| if ((ClientLoadCapabilities & ARR_VersionMismatch) == 0) |
| Diag(diag::warn_pch_different_branch) << ASTBranch << CurBranch; |
| return VersionMismatch; |
| } |
| break; |
| } |
| |
| case IMPORTS: { |
| // Load each of the imported PCH files. |
| unsigned Idx = 0, N = Record.size(); |
| while (Idx < N) { |
| // Read information about the AST file. |
| ModuleKind ImportedKind = (ModuleKind)Record[Idx++]; |
| // The import location will be the local one for now; we will adjust |
| // all import locations of module imports after the global source |
| // location info are setup. |
| SourceLocation ImportLoc = |
| SourceLocation::getFromRawEncoding(Record[Idx++]); |
| off_t StoredSize = (off_t)Record[Idx++]; |
| time_t StoredModTime = (time_t)Record[Idx++]; |
| unsigned Length = Record[Idx++]; |
| SmallString<128> ImportedFile(Record.begin() + Idx, |
| Record.begin() + Idx + Length); |
| Idx += Length; |
| |
| // Load the AST file. |
| switch(ReadASTCore(ImportedFile, ImportedKind, ImportLoc, &F, Loaded, |
| StoredSize, StoredModTime, |
| ClientLoadCapabilities)) { |
| case Failure: return Failure; |
| // If we have to ignore the dependency, we'll have to ignore this too. |
| case Missing: |
| case OutOfDate: return OutOfDate; |
| case VersionMismatch: return VersionMismatch; |
| case ConfigurationMismatch: return ConfigurationMismatch; |
| case HadErrors: return HadErrors; |
| case Success: break; |
| } |
| } |
| break; |
| } |
| |
| case LANGUAGE_OPTIONS: { |
| bool Complain = (ClientLoadCapabilities & ARR_ConfigurationMismatch) == 0; |
| if (Listener && &F == *ModuleMgr.begin() && |
| ParseLanguageOptions(Record, Complain, *Listener) && |
| !DisableValidation) |
| return ConfigurationMismatch; |
| break; |
| } |
| |
| case TARGET_OPTIONS: { |
| bool Complain = (ClientLoadCapabilities & ARR_ConfigurationMismatch)==0; |
| if (Listener && &F == *ModuleMgr.begin() && |
| ParseTargetOptions(Record, Complain, *Listener) && |
| !DisableValidation) |
| return ConfigurationMismatch; |
| break; |
| } |
| |
| case DIAGNOSTIC_OPTIONS: { |
| bool Complain = (ClientLoadCapabilities & ARR_ConfigurationMismatch)==0; |
| if (Listener && &F == *ModuleMgr.begin() && |
| ParseDiagnosticOptions(Record, Complain, *Listener) && |
| !DisableValidation) |
| return ConfigurationMismatch; |
| break; |
| } |
| |
| case FILE_SYSTEM_OPTIONS: { |
| bool Complain = (ClientLoadCapabilities & ARR_ConfigurationMismatch)==0; |
| if (Listener && &F == *ModuleMgr.begin() && |
| ParseFileSystemOptions(Record, Complain, *Listener) && |
| !DisableValidation) |
| return ConfigurationMismatch; |
| break; |
| } |
| |
| case HEADER_SEARCH_OPTIONS: { |
| bool Complain = (ClientLoadCapabilities & ARR_ConfigurationMismatch)==0; |
| if (Listener && &F == *ModuleMgr.begin() && |
| ParseHeaderSearchOptions(Record, Complain, *Listener) && |
| !DisableValidation) |
| return ConfigurationMismatch; |
| break; |
| } |
| |
| case PREPROCESSOR_OPTIONS: { |
| bool Complain = (ClientLoadCapabilities & ARR_ConfigurationMismatch)==0; |
| if (Listener && &F == *ModuleMgr.begin() && |
| ParsePreprocessorOptions(Record, Complain, *Listener, |
| SuggestedPredefines) && |
| !DisableValidation) |
| return ConfigurationMismatch; |
| break; |
| } |
| |
| case ORIGINAL_FILE: |
| F.OriginalSourceFileID = FileID::get(Record[0]); |
| F.ActualOriginalSourceFileName = Blob; |
| F.OriginalSourceFileName = F.ActualOriginalSourceFileName; |
| MaybeAddSystemRootToFilename(F, F.OriginalSourceFileName); |
| break; |
| |
| case ORIGINAL_FILE_ID: |
| F.OriginalSourceFileID = FileID::get(Record[0]); |
| break; |
| |
| case ORIGINAL_PCH_DIR: |
| F.OriginalDir = Blob; |
| break; |
| |
| case INPUT_FILE_OFFSETS: |
| F.InputFileOffsets = (const uint32_t *)Blob.data(); |
| F.InputFilesLoaded.resize(Record[0]); |
| break; |
| } |
| } |
| } |
| |
| bool ASTReader::ReadASTBlock(ModuleFile &F) { |
| BitstreamCursor &Stream = F.Stream; |
| |
| if (Stream.EnterSubBlock(AST_BLOCK_ID)) { |
| Error("malformed block record in AST file"); |
| return true; |
| } |
| |
| // Read all of the records and blocks for the AST file. |
| RecordData Record; |
| while (1) { |
| llvm::BitstreamEntry Entry = Stream.advance(); |
| |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::Error: |
| Error("error at end of module block in AST file"); |
| return true; |
| case llvm::BitstreamEntry::EndBlock: { |
| // Outside of C++, we do not store a lookup map for the translation unit. |
| // Instead, mark it as needing a lookup map to be built if this module |
| // contains any declarations lexically within it (which it always does!). |
| // This usually has no cost, since we very rarely need the lookup map for |
| // the translation unit outside C++. |
| DeclContext *DC = Context.getTranslationUnitDecl(); |
| if (DC->hasExternalLexicalStorage() && |
| !getContext().getLangOpts().CPlusPlus) |
| DC->setMustBuildLookupTable(); |
| |
| return false; |
| } |
| case llvm::BitstreamEntry::SubBlock: |
| switch (Entry.ID) { |
| case DECLTYPES_BLOCK_ID: |
| // We lazily load the decls block, but we want to set up the |
| // DeclsCursor cursor to point into it. Clone our current bitcode |
| // cursor to it, enter the block and read the abbrevs in that block. |
| // With the main cursor, we just skip over it. |
| F.DeclsCursor = Stream; |
| if (Stream.SkipBlock() || // Skip with the main cursor. |
| // Read the abbrevs. |
| ReadBlockAbbrevs(F.DeclsCursor, DECLTYPES_BLOCK_ID)) { |
| Error("malformed block record in AST file"); |
| return true; |
| } |
| break; |
| |
| case DECL_UPDATES_BLOCK_ID: |
| if (Stream.SkipBlock()) { |
| Error("malformed block record in AST file"); |
| return true; |
| } |
| break; |
| |
| case PREPROCESSOR_BLOCK_ID: |
| F.MacroCursor = Stream; |
| if (!PP.getExternalSource()) |
| PP.setExternalSource(this); |
| |
| if (Stream.SkipBlock() || |
| ReadBlockAbbrevs(F.MacroCursor, PREPROCESSOR_BLOCK_ID)) { |
| Error("malformed block record in AST file"); |
| return true; |
| } |
| F.MacroStartOffset = F.MacroCursor.GetCurrentBitNo(); |
| break; |
| |
| case PREPROCESSOR_DETAIL_BLOCK_ID: |
| F.PreprocessorDetailCursor = Stream; |
| if (Stream.SkipBlock() || |
| ReadBlockAbbrevs(F.PreprocessorDetailCursor, |
| PREPROCESSOR_DETAIL_BLOCK_ID)) { |
| Error("malformed preprocessor detail record in AST file"); |
| return true; |
| } |
| F.PreprocessorDetailStartOffset |
| = F.PreprocessorDetailCursor.GetCurrentBitNo(); |
| |
| if (!PP.getPreprocessingRecord()) |
| PP.createPreprocessingRecord(); |
| if (!PP.getPreprocessingRecord()->getExternalSource()) |
| PP.getPreprocessingRecord()->SetExternalSource(*this); |
| break; |
| |
| case SOURCE_MANAGER_BLOCK_ID: |
| if (ReadSourceManagerBlock(F)) |
| return true; |
| break; |
| |
| case SUBMODULE_BLOCK_ID: |
| if (ReadSubmoduleBlock(F)) |
| return true; |
| break; |
| |
| case COMMENTS_BLOCK_ID: { |
| BitstreamCursor C = Stream; |
| if (Stream.SkipBlock() || |
| ReadBlockAbbrevs(C, COMMENTS_BLOCK_ID)) { |
| Error("malformed comments block in AST file"); |
| return true; |
| } |
| CommentsCursors.push_back(std::make_pair(C, &F)); |
| break; |
| } |
| |
| default: |
| if (Stream.SkipBlock()) { |
| Error("malformed block record in AST file"); |
| return true; |
| } |
| break; |
| } |
| continue; |
| |
| case llvm::BitstreamEntry::Record: |
| // The interesting case. |
| break; |
| } |
| |
| // Read and process a record. |
| Record.clear(); |
| StringRef Blob; |
| switch ((ASTRecordTypes)Stream.readRecord(Entry.ID, Record, &Blob)) { |
| default: // Default behavior: ignore. |
| break; |
| |
| case TYPE_OFFSET: { |
| if (F.LocalNumTypes != 0) { |
| Error("duplicate TYPE_OFFSET record in AST file"); |
| return true; |
| } |
| F.TypeOffsets = (const uint32_t *)Blob.data(); |
| F.LocalNumTypes = Record[0]; |
| unsigned LocalBaseTypeIndex = Record[1]; |
| F.BaseTypeIndex = getTotalNumTypes(); |
| |
| if (F.LocalNumTypes > 0) { |
| // Introduce the global -> local mapping for types within this module. |
| GlobalTypeMap.insert(std::make_pair(getTotalNumTypes(), &F)); |
| |
| // Introduce the local -> global mapping for types within this module. |
| F.TypeRemap.insertOrReplace( |
| std::make_pair(LocalBaseTypeIndex, |
| F.BaseTypeIndex - LocalBaseTypeIndex)); |
| |
| TypesLoaded.resize(TypesLoaded.size() + F.LocalNumTypes); |
| } |
| break; |
| } |
| |
| case DECL_OFFSET: { |
| if (F.LocalNumDecls != 0) { |
| Error("duplicate DECL_OFFSET record in AST file"); |
| return true; |
| } |
| F.DeclOffsets = (const DeclOffset *)Blob.data(); |
| F.LocalNumDecls = Record[0]; |
| unsigned LocalBaseDeclID = Record[1]; |
| F.BaseDeclID = getTotalNumDecls(); |
| |
| if (F.LocalNumDecls > 0) { |
| // Introduce the global -> local mapping for declarations within this |
| // module. |
| GlobalDeclMap.insert( |
| std::make_pair(getTotalNumDecls() + NUM_PREDEF_DECL_IDS, &F)); |
| |
| // Introduce the local -> global mapping for declarations within this |
| // module. |
| F.DeclRemap.insertOrReplace( |
| std::make_pair(LocalBaseDeclID, F.BaseDeclID - LocalBaseDeclID)); |
| |
| // Introduce the global -> local mapping for declarations within this |
| // module. |
| F.GlobalToLocalDeclIDs[&F] = LocalBaseDeclID; |
| |
| DeclsLoaded.resize(DeclsLoaded.size() + F.LocalNumDecls); |
| } |
| break; |
| } |
| |
| case TU_UPDATE_LEXICAL: { |
| DeclContext *TU = Context.getTranslationUnitDecl(); |
| DeclContextInfo &Info = F.DeclContextInfos[TU]; |
| Info.LexicalDecls = reinterpret_cast<const KindDeclIDPair *>(Blob.data()); |
| Info.NumLexicalDecls |
| = static_cast<unsigned int>(Blob.size() / sizeof(KindDeclIDPair)); |
| TU->setHasExternalLexicalStorage(true); |
| break; |
| } |
| |
| case UPDATE_VISIBLE: { |
| unsigned Idx = 0; |
| serialization::DeclID ID = ReadDeclID(F, Record, Idx); |
| ASTDeclContextNameLookupTable *Table = |
| ASTDeclContextNameLookupTable::Create( |
| (const unsigned char *)Blob.data() + Record[Idx++], |
| (const unsigned char *)Blob.data(), |
| ASTDeclContextNameLookupTrait(*this, F)); |
| if (ID == PREDEF_DECL_TRANSLATION_UNIT_ID) { // Is it the TU? |
| DeclContext *TU = Context.getTranslationUnitDecl(); |
| F.DeclContextInfos[TU].NameLookupTableData = Table; |
| TU->setHasExternalVisibleStorage(true); |
| } else |
| PendingVisibleUpdates[ID].push_back(std::make_pair(Table, &F)); |
| break; |
| } |
| |
| case IDENTIFIER_TABLE: |
| F.IdentifierTableData = Blob.data(); |
| if (Record[0]) { |
| F.IdentifierLookupTable |
| = ASTIdentifierLookupTable::Create( |
| (const unsigned char *)F.IdentifierTableData + Record[0], |
| (const unsigned char *)F.IdentifierTableData, |
| ASTIdentifierLookupTrait(*this, F)); |
| |
| PP.getIdentifierTable().setExternalIdentifierLookup(this); |
| } |
| break; |
| |
| case IDENTIFIER_OFFSET: { |
| if (F.LocalNumIdentifiers != 0) { |
| Error("duplicate IDENTIFIER_OFFSET record in AST file"); |
| return true; |
| } |
| F.IdentifierOffsets = (const uint32_t *)Blob.data(); |
| F.LocalNumIdentifiers = Record[0]; |
| unsigned LocalBaseIdentifierID = Record[1]; |
| F.BaseIdentifierID = getTotalNumIdentifiers(); |
| |
| if (F.LocalNumIdentifiers > 0) { |
| // Introduce the global -> local mapping for identifiers within this |
| // module. |
| GlobalIdentifierMap.insert(std::make_pair(getTotalNumIdentifiers() + 1, |
| &F)); |
| |
| // Introduce the local -> global mapping for identifiers within this |
| // module. |
| F.IdentifierRemap.insertOrReplace( |
| std::make_pair(LocalBaseIdentifierID, |
| F.BaseIdentifierID - LocalBaseIdentifierID)); |
| |
| IdentifiersLoaded.resize(IdentifiersLoaded.size() |
| + F.LocalNumIdentifiers); |
| } |
| break; |
| } |
| |
| case EXTERNAL_DEFINITIONS: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| ExternalDefinitions.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case SPECIAL_TYPES: |
| if (SpecialTypes.empty()) { |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| SpecialTypes.push_back(getGlobalTypeID(F, Record[I])); |
| break; |
| } |
| |
| if (SpecialTypes.size() != Record.size()) { |
| Error("invalid special-types record"); |
| return true; |
| } |
| |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) { |
| serialization::TypeID ID = getGlobalTypeID(F, Record[I]); |
| if (!SpecialTypes[I]) |
| SpecialTypes[I] = ID; |
| // FIXME: If ID && SpecialTypes[I] != ID, do we need a separate |
| // merge step? |
| } |
| break; |
| |
| case STATISTICS: |
| TotalNumStatements += Record[0]; |
| TotalNumMacros += Record[1]; |
| TotalLexicalDeclContexts += Record[2]; |
| TotalVisibleDeclContexts += Record[3]; |
| break; |
| |
| case UNUSED_FILESCOPED_DECLS: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| UnusedFileScopedDecls.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case DELEGATING_CTORS: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| DelegatingCtorDecls.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case WEAK_UNDECLARED_IDENTIFIERS: |
| if (Record.size() % 4 != 0) { |
| Error("invalid weak identifiers record"); |
| return true; |
| } |
| |
| // FIXME: Ignore weak undeclared identifiers from non-original PCH |
| // files. This isn't the way to do it :) |
| WeakUndeclaredIdentifiers.clear(); |
| |
| // Translate the weak, undeclared identifiers into global IDs. |
| for (unsigned I = 0, N = Record.size(); I < N; /* in loop */) { |
| WeakUndeclaredIdentifiers.push_back( |
| getGlobalIdentifierID(F, Record[I++])); |
| WeakUndeclaredIdentifiers.push_back( |
| getGlobalIdentifierID(F, Record[I++])); |
| WeakUndeclaredIdentifiers.push_back( |
| ReadSourceLocation(F, Record, I).getRawEncoding()); |
| WeakUndeclaredIdentifiers.push_back(Record[I++]); |
| } |
| break; |
| |
| case LOCALLY_SCOPED_EXTERN_C_DECLS: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| LocallyScopedExternCDecls.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case SELECTOR_OFFSETS: { |
| F.SelectorOffsets = (const uint32_t *)Blob.data(); |
| F.LocalNumSelectors = Record[0]; |
| unsigned LocalBaseSelectorID = Record[1]; |
| F.BaseSelectorID = getTotalNumSelectors(); |
| |
| if (F.LocalNumSelectors > 0) { |
| // Introduce the global -> local mapping for selectors within this |
| // module. |
| GlobalSelectorMap.insert(std::make_pair(getTotalNumSelectors()+1, &F)); |
| |
| // Introduce the local -> global mapping for selectors within this |
| // module. |
| F.SelectorRemap.insertOrReplace( |
| std::make_pair(LocalBaseSelectorID, |
| F.BaseSelectorID - LocalBaseSelectorID)); |
| |
| SelectorsLoaded.resize(SelectorsLoaded.size() + F.LocalNumSelectors); |
| } |
| break; |
| } |
| |
| case METHOD_POOL: |
| F.SelectorLookupTableData = (const unsigned char *)Blob.data(); |
| if (Record[0]) |
| F.SelectorLookupTable |
| = ASTSelectorLookupTable::Create( |
| F.SelectorLookupTableData + Record[0], |
| F.SelectorLookupTableData, |
| ASTSelectorLookupTrait(*this, F)); |
| TotalNumMethodPoolEntries += Record[1]; |
| break; |
| |
| case REFERENCED_SELECTOR_POOL: |
| if (!Record.empty()) { |
| for (unsigned Idx = 0, N = Record.size() - 1; Idx < N; /* in loop */) { |
| ReferencedSelectorsData.push_back(getGlobalSelectorID(F, |
| Record[Idx++])); |
| ReferencedSelectorsData.push_back(ReadSourceLocation(F, Record, Idx). |
| getRawEncoding()); |
| } |
| } |
| break; |
| |
| case PP_COUNTER_VALUE: |
| if (!Record.empty() && Listener) |
| Listener->ReadCounter(F, Record[0]); |
| break; |
| |
| case FILE_SORTED_DECLS: |
| F.FileSortedDecls = (const DeclID *)Blob.data(); |
| F.NumFileSortedDecls = Record[0]; |
| break; |
| |
| case SOURCE_LOCATION_OFFSETS: { |
| F.SLocEntryOffsets = (const uint32_t *)Blob.data(); |
| F.LocalNumSLocEntries = Record[0]; |
| unsigned SLocSpaceSize = Record[1]; |
| llvm::tie(F.SLocEntryBaseID, F.SLocEntryBaseOffset) = |
| SourceMgr.AllocateLoadedSLocEntries(F.LocalNumSLocEntries, |
| SLocSpaceSize); |
| // Make our entry in the range map. BaseID is negative and growing, so |
| // we invert it. Because we invert it, though, we need the other end of |
| // the range. |
| unsigned RangeStart = |
| unsigned(-F.SLocEntryBaseID) - F.LocalNumSLocEntries + 1; |
| GlobalSLocEntryMap.insert(std::make_pair(RangeStart, &F)); |
| F.FirstLoc = SourceLocation::getFromRawEncoding(F.SLocEntryBaseOffset); |
| |
| // SLocEntryBaseOffset is lower than MaxLoadedOffset and decreasing. |
| assert((F.SLocEntryBaseOffset & (1U << 31U)) == 0); |
| GlobalSLocOffsetMap.insert( |
| std::make_pair(SourceManager::MaxLoadedOffset - F.SLocEntryBaseOffset |
| - SLocSpaceSize,&F)); |
| |
| // Initialize the remapping table. |
| // Invalid stays invalid. |
| F.SLocRemap.insert(std::make_pair(0U, 0)); |
| // This module. Base was 2 when being compiled. |
| F.SLocRemap.insert(std::make_pair(2U, |
| static_cast<int>(F.SLocEntryBaseOffset - 2))); |
| |
| TotalNumSLocEntries += F.LocalNumSLocEntries; |
| break; |
| } |
| |
| case MODULE_OFFSET_MAP: { |
| // Additional remapping information. |
| const unsigned char *Data = (const unsigned char*)Blob.data(); |
| const unsigned char *DataEnd = Data + Blob.size(); |
| |
| // Continuous range maps we may be updating in our module. |
| ContinuousRangeMap<uint32_t, int, 2>::Builder SLocRemap(F.SLocRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder |
| IdentifierRemap(F.IdentifierRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder |
| MacroRemap(F.MacroRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder |
| PreprocessedEntityRemap(F.PreprocessedEntityRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder |
| SubmoduleRemap(F.SubmoduleRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder |
| SelectorRemap(F.SelectorRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder DeclRemap(F.DeclRemap); |
| ContinuousRangeMap<uint32_t, int, 2>::Builder TypeRemap(F.TypeRemap); |
| |
| while(Data < DataEnd) { |
| uint16_t Len = io::ReadUnalignedLE16(Data); |
| StringRef Name = StringRef((const char*)Data, Len); |
| Data += Len; |
| ModuleFile *OM = ModuleMgr.lookup(Name); |
| if (!OM) { |
| Error("SourceLocation remap refers to unknown module"); |
| return true; |
| } |
| |
| uint32_t SLocOffset = io::ReadUnalignedLE32(Data); |
| uint32_t IdentifierIDOffset = io::ReadUnalignedLE32(Data); |
| uint32_t MacroIDOffset = io::ReadUnalignedLE32(Data); |
| uint32_t PreprocessedEntityIDOffset = io::ReadUnalignedLE32(Data); |
| uint32_t SubmoduleIDOffset = io::ReadUnalignedLE32(Data); |
| uint32_t SelectorIDOffset = io::ReadUnalignedLE32(Data); |
| uint32_t DeclIDOffset = io::ReadUnalignedLE32(Data); |
| uint32_t TypeIndexOffset = io::ReadUnalignedLE32(Data); |
| |
| // Source location offset is mapped to OM->SLocEntryBaseOffset. |
| SLocRemap.insert(std::make_pair(SLocOffset, |
| static_cast<int>(OM->SLocEntryBaseOffset - SLocOffset))); |
| IdentifierRemap.insert( |
| std::make_pair(IdentifierIDOffset, |
| OM->BaseIdentifierID - IdentifierIDOffset)); |
| MacroRemap.insert(std::make_pair(MacroIDOffset, |
| OM->BaseMacroID - MacroIDOffset)); |
| PreprocessedEntityRemap.insert( |
| std::make_pair(PreprocessedEntityIDOffset, |
| OM->BasePreprocessedEntityID - PreprocessedEntityIDOffset)); |
| SubmoduleRemap.insert(std::make_pair(SubmoduleIDOffset, |
| OM->BaseSubmoduleID - SubmoduleIDOffset)); |
| SelectorRemap.insert(std::make_pair(SelectorIDOffset, |
| OM->BaseSelectorID - SelectorIDOffset)); |
| DeclRemap.insert(std::make_pair(DeclIDOffset, |
| OM->BaseDeclID - DeclIDOffset)); |
| |
| TypeRemap.insert(std::make_pair(TypeIndexOffset, |
| OM->BaseTypeIndex - TypeIndexOffset)); |
| |
| // Global -> local mappings. |
| F.GlobalToLocalDeclIDs[OM] = DeclIDOffset; |
| } |
| break; |
| } |
| |
| case SOURCE_MANAGER_LINE_TABLE: |
| if (ParseLineTable(F, Record)) |
| return true; |
| break; |
| |
| case SOURCE_LOCATION_PRELOADS: { |
| // Need to transform from the local view (1-based IDs) to the global view, |
| // which is based off F.SLocEntryBaseID. |
| if (!F.PreloadSLocEntries.empty()) { |
| Error("Multiple SOURCE_LOCATION_PRELOADS records in AST file"); |
| return true; |
| } |
| |
| F.PreloadSLocEntries.swap(Record); |
| break; |
| } |
| |
| case EXT_VECTOR_DECLS: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| ExtVectorDecls.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case VTABLE_USES: |
| if (Record.size() % 3 != 0) { |
| Error("Invalid VTABLE_USES record"); |
| return true; |
| } |
| |
| // Later tables overwrite earlier ones. |
| // FIXME: Modules will have some trouble with this. This is clearly not |
| // the right way to do this. |
| VTableUses.clear(); |
| |
| for (unsigned Idx = 0, N = Record.size(); Idx != N; /* In loop */) { |
| VTableUses.push_back(getGlobalDeclID(F, Record[Idx++])); |
| VTableUses.push_back( |
| ReadSourceLocation(F, Record, Idx).getRawEncoding()); |
| VTableUses.push_back(Record[Idx++]); |
| } |
| break; |
| |
| case DYNAMIC_CLASSES: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| DynamicClasses.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case PENDING_IMPLICIT_INSTANTIATIONS: |
| if (PendingInstantiations.size() % 2 != 0) { |
| Error("Invalid existing PendingInstantiations"); |
| return true; |
| } |
| |
| if (Record.size() % 2 != 0) { |
| Error("Invalid PENDING_IMPLICIT_INSTANTIATIONS block"); |
| return true; |
| } |
| |
| for (unsigned I = 0, N = Record.size(); I != N; /* in loop */) { |
| PendingInstantiations.push_back(getGlobalDeclID(F, Record[I++])); |
| PendingInstantiations.push_back( |
| ReadSourceLocation(F, Record, I).getRawEncoding()); |
| } |
| break; |
| |
| case SEMA_DECL_REFS: |
| // Later tables overwrite earlier ones. |
| // FIXME: Modules will have some trouble with this. |
| SemaDeclRefs.clear(); |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| SemaDeclRefs.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case PPD_ENTITIES_OFFSETS: { |
| F.PreprocessedEntityOffsets = (const PPEntityOffset *)Blob.data(); |
| assert(Blob.size() % sizeof(PPEntityOffset) == 0); |
| F.NumPreprocessedEntities = Blob.size() / sizeof(PPEntityOffset); |
| |
| unsigned LocalBasePreprocessedEntityID = Record[0]; |
| |
| unsigned StartingID; |
| if (!PP.getPreprocessingRecord()) |
| PP.createPreprocessingRecord(); |
| if (!PP.getPreprocessingRecord()->getExternalSource()) |
| PP.getPreprocessingRecord()->SetExternalSource(*this); |
| StartingID |
| = PP.getPreprocessingRecord() |
| ->allocateLoadedEntities(F.NumPreprocessedEntities); |
| F.BasePreprocessedEntityID = StartingID; |
| |
| if (F.NumPreprocessedEntities > 0) { |
| // Introduce the global -> local mapping for preprocessed entities in |
| // this module. |
| GlobalPreprocessedEntityMap.insert(std::make_pair(StartingID, &F)); |
| |
| // Introduce the local -> global mapping for preprocessed entities in |
| // this module. |
| F.PreprocessedEntityRemap.insertOrReplace( |
| std::make_pair(LocalBasePreprocessedEntityID, |
| F.BasePreprocessedEntityID - LocalBasePreprocessedEntityID)); |
| } |
| |
| break; |
| } |
| |
| case DECL_UPDATE_OFFSETS: { |
| if (Record.size() % 2 != 0) { |
| Error("invalid DECL_UPDATE_OFFSETS block in AST file"); |
| return true; |
| } |
| for (unsigned I = 0, N = Record.size(); I != N; I += 2) |
| DeclUpdateOffsets[getGlobalDeclID(F, Record[I])] |
| .push_back(std::make_pair(&F, Record[I+1])); |
| break; |
| } |
| |
| case DECL_REPLACEMENTS: { |
| if (Record.size() % 3 != 0) { |
| Error("invalid DECL_REPLACEMENTS block in AST file"); |
| return true; |
| } |
| for (unsigned I = 0, N = Record.size(); I != N; I += 3) |
| ReplacedDecls[getGlobalDeclID(F, Record[I])] |
| = ReplacedDeclInfo(&F, Record[I+1], Record[I+2]); |
| break; |
| } |
| |
| case OBJC_CATEGORIES_MAP: { |
| if (F.LocalNumObjCCategoriesInMap != 0) { |
| Error("duplicate OBJC_CATEGORIES_MAP record in AST file"); |
| return true; |
| } |
| |
| F.LocalNumObjCCategoriesInMap = Record[0]; |
| F.ObjCCategoriesMap = (const ObjCCategoriesInfo *)Blob.data(); |
| break; |
| } |
| |
| case OBJC_CATEGORIES: |
| F.ObjCCategories.swap(Record); |
| break; |
| |
| case CXX_BASE_SPECIFIER_OFFSETS: { |
| if (F.LocalNumCXXBaseSpecifiers != 0) { |
| Error("duplicate CXX_BASE_SPECIFIER_OFFSETS record in AST file"); |
| return true; |
| } |
| |
| F.LocalNumCXXBaseSpecifiers = Record[0]; |
| F.CXXBaseSpecifiersOffsets = (const uint32_t *)Blob.data(); |
| NumCXXBaseSpecifiersLoaded += F.LocalNumCXXBaseSpecifiers; |
| break; |
| } |
| |
| case DIAG_PRAGMA_MAPPINGS: |
| if (F.PragmaDiagMappings.empty()) |
| F.PragmaDiagMappings.swap(Record); |
| else |
| F.PragmaDiagMappings.insert(F.PragmaDiagMappings.end(), |
| Record.begin(), Record.end()); |
| break; |
| |
| case CUDA_SPECIAL_DECL_REFS: |
| // Later tables overwrite earlier ones. |
| // FIXME: Modules will have trouble with this. |
| CUDASpecialDeclRefs.clear(); |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| CUDASpecialDeclRefs.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case HEADER_SEARCH_TABLE: { |
| F.HeaderFileInfoTableData = Blob.data(); |
| F.LocalNumHeaderFileInfos = Record[1]; |
| if (Record[0]) { |
| F.HeaderFileInfoTable |
| = HeaderFileInfoLookupTable::Create( |
| (const unsigned char *)F.HeaderFileInfoTableData + Record[0], |
| (const unsigned char *)F.HeaderFileInfoTableData, |
| HeaderFileInfoTrait(*this, F, |
| &PP.getHeaderSearchInfo(), |
| Blob.data() + Record[2])); |
| |
| PP.getHeaderSearchInfo().SetExternalSource(this); |
| if (!PP.getHeaderSearchInfo().getExternalLookup()) |
| PP.getHeaderSearchInfo().SetExternalLookup(this); |
| } |
| break; |
| } |
| |
| case FP_PRAGMA_OPTIONS: |
| // Later tables overwrite earlier ones. |
| FPPragmaOptions.swap(Record); |
| break; |
| |
| case OPENCL_EXTENSIONS: |
| // Later tables overwrite earlier ones. |
| OpenCLExtensions.swap(Record); |
| break; |
| |
| case TENTATIVE_DEFINITIONS: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| TentativeDefinitions.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case KNOWN_NAMESPACES: |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) |
| KnownNamespaces.push_back(getGlobalDeclID(F, Record[I])); |
| break; |
| |
| case UNDEFINED_BUT_USED: |
| if (UndefinedButUsed.size() % 2 != 0) { |
| Error("Invalid existing UndefinedButUsed"); |
| return true; |
| } |
| |
| if (Record.size() % 2 != 0) { |
| Error("invalid undefined-but-used record"); |
| return true; |
| } |
| for (unsigned I = 0, N = Record.size(); I != N; /* in loop */) { |
| UndefinedButUsed.push_back(getGlobalDeclID(F, Record[I++])); |
| UndefinedButUsed.push_back( |
| ReadSourceLocation(F, Record, I).getRawEncoding()); |
| } |
| break; |
| |
| case IMPORTED_MODULES: { |
| if (F.Kind != MK_Module) { |
| // If we aren't loading a module (which has its own exports), make |
| // all of the imported modules visible. |
| // FIXME: Deal with macros-only imports. |
| for (unsigned I = 0, N = Record.size(); I != N; ++I) { |
| if (unsigned GlobalID = getGlobalSubmoduleID(F, Record[I])) |
| ImportedModules.push_back(GlobalID); |
| } |
| } |
| break; |
| } |
| |
| case LOCAL_REDECLARATIONS: { |
| F.RedeclarationChains.swap(Record); |
| break; |
| } |
| |
| case LOCAL_REDECLARATIONS_MAP: { |
| if (F.LocalNumRedeclarationsInMap != 0) { |
| Error("duplicate LOCAL_REDECLARATIONS_MAP record in AST file"); |
| return true; |
| } |
| |
| F.LocalNumRedeclarationsInMap = Record[0]; |
| F.RedeclarationsMap = (const LocalRedeclarationsInfo *)Blob.data(); |
| break; |
| } |
| |
| case MERGED_DECLARATIONS: { |
| for (unsigned Idx = 0; Idx < Record.size(); /* increment in loop */) { |
| GlobalDeclID CanonID = getGlobalDeclID(F, Record[Idx++]); |
| SmallVectorImpl<GlobalDeclID> &Decls = StoredMergedDecls[CanonID]; |
| for (unsigned N = Record[Idx++]; N > 0; --N) |
| Decls.push_back(getGlobalDeclID(F, Record[Idx++])); |
| } |
| break; |
| } |
| |
| case MACRO_OFFSET: { |
| if (F.LocalNumMacros != 0) { |
| Error("duplicate MACRO_OFFSET record in AST file"); |
| return true; |
| } |
| F.MacroOffsets = (const uint32_t *)Blob.data(); |
| F.LocalNumMacros = Record[0]; |
| unsigned LocalBaseMacroID = Record[1]; |
| F.BaseMacroID = getTotalNumMacros(); |
| |
| if (F.LocalNumMacros > 0) { |
| // Introduce the global -> local mapping for macros within this module. |
| GlobalMacroMap.insert(std::make_pair(getTotalNumMacros() + 1, &F)); |
| |
| // Introduce the local -> global mapping for macros within this module. |
| F.MacroRemap.insertOrReplace( |
| std::make_pair(LocalBaseMacroID, |
| F.BaseMacroID - LocalBaseMacroID)); |
| |
| MacrosLoaded.resize(MacrosLoaded.size() + F.LocalNumMacros); |
| } |
| break; |
| } |
| |
| case MACRO_TABLE: { |
| // FIXME: Not used yet. |
| break; |
| } |
| } |
| } |
| } |
| |
| /// \brief Move the given method to the back of the global list of methods. |
| static void moveMethodToBackOfGlobalList(Sema &S, ObjCMethodDecl *Method) { |
| // Find the entry for this selector in the method pool. |
| Sema::GlobalMethodPool::iterator Known |
| = S.MethodPool.find(Method->getSelector()); |
| if (Known == S.MethodPool.end()) |
| return; |
| |
| // Retrieve the appropriate method list. |
| ObjCMethodList &Start = Method->isInstanceMethod()? Known->second.first |
| : Known->second.second; |
| bool Found = false; |
| for (ObjCMethodList *List = &Start; List; List = List->getNext()) { |
| if (!Found) { |
| if (List->Method == Method) { |
| Found = true; |
| } else { |
| // Keep searching. |
| continue; |
| } |
| } |
| |
| if (List->getNext()) |
| List->Method = List->getNext()->Method; |
| else |
| List->Method = Method; |
| } |
| } |
| |
| void ASTReader::makeNamesVisible(const HiddenNames &Names, Module *Owner) { |
| for (unsigned I = 0, N = Names.size(); I != N; ++I) { |
| switch (Names[I].getKind()) { |
| case HiddenName::Declaration: { |
| Decl *D = Names[I].getDecl(); |
| bool wasHidden = D->Hidden; |
| D->Hidden = false; |
| |
| if (wasHidden && SemaObj) { |
| if (ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(D)) { |
| moveMethodToBackOfGlobalList(*SemaObj, Method); |
| } |
| } |
| break; |
| } |
| case HiddenName::MacroVisibility: { |
| std::pair<IdentifierInfo *, MacroDirective *> Macro = Names[I].getMacro(); |
| installImportedMacro(Macro.first, Macro.second, Owner); |
| break; |
| } |
| } |
| } |
| } |
| |
| void ASTReader::makeModuleVisible(Module *Mod, |
| Module::NameVisibilityKind NameVisibility, |
| SourceLocation ImportLoc, |
| bool Complain) { |
| llvm::SmallPtrSet<Module *, 4> Visited; |
| SmallVector<Module *, 4> Stack; |
| Stack.push_back(Mod); |
| while (!Stack.empty()) { |
| Mod = Stack.back(); |
| Stack.pop_back(); |
| |
| if (NameVisibility <= Mod->NameVisibility) { |
| // This module already has this level of visibility (or greater), so |
| // there is nothing more to do. |
| continue; |
| } |
| |
| if (!Mod->isAvailable()) { |
| // Modules that aren't available cannot be made visible. |
| continue; |
| } |
| |
| // Update the module's name visibility. |
| Mod->NameVisibility = NameVisibility; |
| |
| // If we've already deserialized any names from this module, |
| // mark them as visible. |
| HiddenNamesMapType::iterator Hidden = HiddenNamesMap.find(Mod); |
| if (Hidden != HiddenNamesMap.end()) { |
| makeNamesVisible(Hidden->second, Hidden->first); |
| HiddenNamesMap.erase(Hidden); |
| } |
| |
| // Push any non-explicit submodules onto the stack to be marked as |
| // visible. |
| for (Module::submodule_iterator Sub = Mod->submodule_begin(), |
| SubEnd = Mod->submodule_end(); |
| Sub != SubEnd; ++Sub) { |
| if (!(*Sub)->IsExplicit && Visited.insert(*Sub)) |
| Stack.push_back(*Sub); |
| } |
| |
| // Push any exported modules onto the stack to be marked as visible. |
| SmallVector<Module *, 16> Exports; |
| Mod->getExportedModules(Exports); |
| for (SmallVectorImpl<Module *>::iterator |
| I = Exports.begin(), E = Exports.end(); I != E; ++I) { |
| Module *Exported = *I; |
| if (Visited.insert(Exported)) |
| Stack.push_back(Exported); |
| } |
| |
| // Detect any conflicts. |
| if (Complain) { |
| assert(ImportLoc.isValid() && "Missing import location"); |
| for (unsigned I = 0, N = Mod->Conflicts.size(); I != N; ++I) { |
| if (Mod->Conflicts[I].Other->NameVisibility >= NameVisibility) { |
| Diag(ImportLoc, diag::warn_module_conflict) |
| << Mod->getFullModuleName() |
| << Mod->Conflicts[I].Other->getFullModuleName() |
| << Mod->Conflicts[I].Message; |
| // FIXME: Need note where the other module was imported. |
| } |
| } |
| } |
| } |
| } |
| |
| bool ASTReader::loadGlobalIndex() { |
| if (GlobalIndex) |
| return false; |
| |
| if (TriedLoadingGlobalIndex || !UseGlobalIndex || |
| !Context.getLangOpts().Modules) |
| return true; |
| |
| // Try to load the global index. |
| TriedLoadingGlobalIndex = true; |
| StringRef ModuleCachePath |
| = getPreprocessor().getHeaderSearchInfo().getModuleCachePath(); |
| std::pair<GlobalModuleIndex *, GlobalModuleIndex::ErrorCode> Result |
| = GlobalModuleIndex::readIndex(ModuleCachePath); |
| if (!Result.first) |
| return true; |
| |
| GlobalIndex.reset(Result.first); |
| ModuleMgr.setGlobalIndex(GlobalIndex.get()); |
| return false; |
| } |
| |
| bool ASTReader::isGlobalIndexUnavailable() const { |
| return Context.getLangOpts().Modules && UseGlobalIndex && |
| !hasGlobalIndex() && TriedLoadingGlobalIndex; |
| } |
| |
| ASTReader::ASTReadResult ASTReader::ReadAST(const std::string &FileName, |
| ModuleKind Type, |
| SourceLocation ImportLoc, |
| unsigned ClientLoadCapabilities) { |
| // Bump the generation number. |
| unsigned PreviousGeneration = CurrentGeneration++; |
| |
| unsigned NumModules = ModuleMgr.size(); |
| SmallVector<ImportedModule, 4> Loaded; |
| switch(ASTReadResult ReadResult = ReadASTCore(FileName, Type, ImportLoc, |
| /*ImportedBy=*/0, Loaded, |
| 0, 0, |
| ClientLoadCapabilities)) { |
| case Failure: |
| case Missing: |
| case OutOfDate: |
| case VersionMismatch: |
| case ConfigurationMismatch: |
| case HadErrors: |
| ModuleMgr.removeModules(ModuleMgr.begin() + NumModules, ModuleMgr.end(), |
| Context.getLangOpts().Modules |
| ? &PP.getHeaderSearchInfo().getModuleMap() |
| : 0); |
| |
| // If we find that any modules are unusable, the global index is going |
| // to be out-of-date. Just remove it. |
| GlobalIndex.reset(); |
| ModuleMgr.setGlobalIndex(0); |
| return ReadResult; |
| |
| case Success: |
| break; |
| } |
| |
| // Here comes stuff that we only do once the entire chain is loaded. |
| |
| // Load the AST blocks of all of the modules that we loaded. |
| for (SmallVectorImpl<ImportedModule>::iterator M = Loaded.begin(), |
| MEnd = Loaded.end(); |
| M != MEnd; ++M) { |
| ModuleFile &F = *M->Mod; |
| |
| // Read the AST block. |
| if (ReadASTBlock(F)) |
| return Failure; |
| |
| // Once read, set the ModuleFile bit base offset and update the size in |
| // bits of all files we've seen. |
| F.GlobalBitOffset = TotalModulesSizeInBits; |
| TotalModulesSizeInBits += F.SizeInBits; |
| GlobalBitOffsetsMap.insert(std::make_pair(F.GlobalBitOffset, &F)); |
| |
| // Preload SLocEntries. |
| for (unsigned I = 0, N = F.PreloadSLocEntries.size(); I != N; ++I) { |
| int Index = int(F.PreloadSLocEntries[I] - 1) + F.SLocEntryBaseID; |
| // Load it through the SourceManager and don't call ReadSLocEntry() |
| // directly because the entry may have already been loaded in which case |
| // calling ReadSLocEntry() directly would trigger an assertion in |
| // SourceManager. |
| SourceMgr.getLoadedSLocEntryByID(Index); |
| } |
| } |
| |
| // Setup the import locations and notify the module manager that we've |
| // committed to these module files. |
| for (SmallVectorImpl<ImportedModule>::iterator M = Loaded.begin(), |
| MEnd = Loaded.end(); |
| M != MEnd; ++M) { |
| ModuleFile &F = *M->Mod; |
| |
| ModuleMgr.moduleFileAccepted(&F); |
| |
| // Set the import location. |
| F.DirectImportLoc = ImportLoc; |
| if (!M->ImportedBy) |
| F.ImportLoc = M->ImportLoc; |
| else |
| F.ImportLoc = ReadSourceLocation(*M->ImportedBy, |
| M->ImportLoc.getRawEncoding()); |
| } |
| |
| // Mark all of the identifiers in the identifier table as being out of date, |
| // so that various accessors know to check the loaded modules when the |
| // identifier is used. |
| for (IdentifierTable::iterator Id = PP.getIdentifierTable().begin(), |
| IdEnd = PP.getIdentifierTable().end(); |
| Id != IdEnd; ++Id) |
| Id->second->setOutOfDate(true); |
| |
| // Resolve any unresolved module exports. |
| for (unsigned I = 0, N = UnresolvedModuleRefs.size(); I != N; ++I) { |
| UnresolvedModuleRef &Unresolved = UnresolvedModuleRefs[I]; |
| SubmoduleID GlobalID = getGlobalSubmoduleID(*Unresolved.File,Unresolved.ID); |
| Module *ResolvedMod = getSubmodule(GlobalID); |
| |
| switch (Unresolved.Kind) { |
| case UnresolvedModuleRef::Conflict: |
| if (ResolvedMod) { |
| Module::Conflict Conflict; |
| Conflict.Other = ResolvedMod; |
| Conflict.Message = Unresolved.String.str(); |
| Unresolved.Mod->Conflicts.push_back(Conflict); |
| } |
| continue; |
| |
| case UnresolvedModuleRef::Import: |
| if (ResolvedMod) |
| Unresolved.Mod->Imports.push_back(ResolvedMod); |
| continue; |
| |
| case UnresolvedModuleRef::Export: |
| if (ResolvedMod || Unresolved.IsWildcard) |
| Unresolved.Mod->Exports.push_back( |
| Module::ExportDecl(ResolvedMod, Unresolved.IsWildcard)); |
| continue; |
| } |
| } |
| UnresolvedModuleRefs.clear(); |
| |
| InitializeContext(); |
| |
| if (DeserializationListener) |
| DeserializationListener->ReaderInitialized(this); |
| |
| ModuleFile &PrimaryModule = ModuleMgr.getPrimaryModule(); |
| if (!PrimaryModule.OriginalSourceFileID.isInvalid()) { |
| PrimaryModule.OriginalSourceFileID |
| = FileID::get(PrimaryModule.SLocEntryBaseID |
| + PrimaryModule.OriginalSourceFileID.getOpaqueValue() - 1); |
| |
| // If this AST file is a precompiled preamble, then set the |
| // preamble file ID of the source manager to the file source file |
| // from which the preamble was built. |
| if (Type == MK_Preamble) { |
| SourceMgr.setPreambleFileID(PrimaryModule.OriginalSourceFileID); |
| } else if (Type == MK_MainFile) { |
| SourceMgr.setMainFileID(PrimaryModule.OriginalSourceFileID); |
| } |
| } |
| |
| // For any Objective-C class definitions we have already loaded, make sure |
| // that we load any additional categories. |
| for (unsigned I = 0, N = ObjCClassesLoaded.size(); I != N; ++I) { |
| loadObjCCategories(ObjCClassesLoaded[I]->getGlobalID(), |
| ObjCClassesLoaded[I], |
| PreviousGeneration); |
| } |
| |
| return Success; |
| } |
| |
| ASTReader::ASTReadResult |
| ASTReader::ReadASTCore(StringRef FileName, |
| ModuleKind Type, |
| SourceLocation ImportLoc, |
| ModuleFile *ImportedBy, |
| SmallVectorImpl<ImportedModule> &Loaded, |
| off_t ExpectedSize, time_t ExpectedModTime, |
| unsigned ClientLoadCapabilities) { |
| ModuleFile *M; |
| std::string ErrorStr; |
| ModuleManager::AddModuleResult AddResult |
| = ModuleMgr.addModule(FileName, Type, ImportLoc, ImportedBy, |
| CurrentGeneration, ExpectedSize, ExpectedModTime, |
| M, ErrorStr); |
| |
| switch (AddResult) { |
| case ModuleManager::AlreadyLoaded: |
| return Success; |
| |
| case ModuleManager::NewlyLoaded: |
| // Load module file below. |
| break; |
| |
| case ModuleManager::Missing: |
| // The module file was missing; if the client handle handle, that, return |
| // it. |
| if (ClientLoadCapabilities & ARR_Missing) |
| return Missing; |
| |
| // Otherwise, return an error. |
| { |
| std::string Msg = "Unable to load module \"" + FileName.str() + "\": " |
| + ErrorStr; |
| Error(Msg); |
| } |
| return Failure; |
| |
| case ModuleManager::OutOfDate: |
| // We couldn't load the module file because it is out-of-date. If the |
| // client can handle out-of-date, return it. |
| if (ClientLoadCapabilities & ARR_OutOfDate) |
| return OutOfDate; |
| |
| // Otherwise, return an error. |
| { |
| std::string Msg = "Unable to load module \"" + FileName.str() + "\": " |
| + ErrorStr; |
| Error(Msg); |
| } |
| return Failure; |
| } |
| |
| assert(M && "Missing module file"); |
| |
| // FIXME: This seems rather a hack. Should CurrentDir be part of the |
| // module? |
| if (FileName != "-") { |
| CurrentDir = llvm::sys::path::parent_path(FileName); |
| if (CurrentDir.empty()) CurrentDir = "."; |
| } |
| |
| ModuleFile &F = *M; |
| BitstreamCursor &Stream = F.Stream; |
| Stream.init(F.StreamFile); |
| F.SizeInBits = F.Buffer->getBufferSize() * 8; |
| |
| // Sniff for the signature. |
| if (Stream.Read(8) != 'C' || |
| Stream.Read(8) != 'P' || |
| Stream.Read(8) != 'C' || |
| Stream.Read(8) != 'H') { |
| Diag(diag::err_not_a_pch_file) << FileName; |
| return Failure; |
| } |
| |
| // This is used for compatibility with older PCH formats. |
| bool HaveReadControlBlock = false; |
| |
| while (1) { |
| llvm::BitstreamEntry Entry = Stream.advance(); |
| |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::Error: |
| case llvm::BitstreamEntry::EndBlock: |
| case llvm::BitstreamEntry::Record: |
| Error("invalid record at top-level of AST file"); |
| return Failure; |
| |
| case llvm::BitstreamEntry::SubBlock: |
| break; |
| } |
| |
| // We only know the control subblock ID. |
| switch (Entry.ID) { |
| case llvm::bitc::BLOCKINFO_BLOCK_ID: |
| if (Stream.ReadBlockInfoBlock()) { |
| Error("malformed BlockInfoBlock in AST file"); |
| return Failure; |
| } |
| break; |
| case CONTROL_BLOCK_ID: |
| HaveReadControlBlock = true; |
| switch (ReadControlBlock(F, Loaded, ClientLoadCapabilities)) { |
| case Success: |
| break; |
| |
| case Failure: return Failure; |
| case Missing: return Missing; |
| case OutOfDate: return OutOfDate; |
| case VersionMismatch: return VersionMismatch; |
| case ConfigurationMismatch: return ConfigurationMismatch; |
| case HadErrors: return HadErrors; |
| } |
| break; |
| case AST_BLOCK_ID: |
| if (!HaveReadControlBlock) { |
| if ((ClientLoadCapabilities & ARR_VersionMismatch) == 0) |
| Diag(diag::warn_pch_version_too_old); |
| return VersionMismatch; |
| } |
| |
| // Record that we've loaded this module. |
| Loaded.push_back(ImportedModule(M, ImportedBy, ImportLoc)); |
| return Success; |
| |
| default: |
| if (Stream.SkipBlock()) { |
| Error("malformed block record in AST file"); |
| return Failure; |
| } |
| break; |
| } |
| } |
| |
| return Success; |
| } |
| |
| void ASTReader::InitializeContext() { |
| // If there's a listener, notify them that we "read" the translation unit. |
| if (DeserializationListener) |
| DeserializationListener->DeclRead(PREDEF_DECL_TRANSLATION_UNIT_ID, |
| Context.getTranslationUnitDecl()); |
| |
| // Make sure we load the declaration update records for the translation unit, |
| // if there are any. |
| loadDeclUpdateRecords(PREDEF_DECL_TRANSLATION_UNIT_ID, |
| Context.getTranslationUnitDecl()); |
| |
| // FIXME: Find a better way to deal with collisions between these |
| // built-in types. Right now, we just ignore the problem. |
| |
| // Load the special types. |
| if (SpecialTypes.size() >= NumSpecialTypeIDs) { |
| if (unsigned String = SpecialTypes[SPECIAL_TYPE_CF_CONSTANT_STRING]) { |
| if (!Context.CFConstantStringTypeDecl) |
| Context.setCFConstantStringType(GetType(String)); |
| } |
| |
| if (unsigned File = SpecialTypes[SPECIAL_TYPE_FILE]) { |
| QualType FileType = GetType(File); |
| if (FileType.isNull()) { |
| Error("FILE type is NULL"); |
| return; |
| } |
| |
| if (!Context.FILEDecl) { |
| if (const TypedefType *Typedef = FileType->getAs<TypedefType>()) |
| Context.setFILEDecl(Typedef->getDecl()); |
| else { |
| const TagType *Tag = FileType->getAs<TagType>(); |
| if (!Tag) { |
| Error("Invalid FILE type in AST file"); |
| return; |
| } |
| Context.setFILEDecl(Tag->getDecl()); |
| } |
| } |
| } |
| |
| if (unsigned Jmp_buf = SpecialTypes[SPECIAL_TYPE_JMP_BUF]) { |
| QualType Jmp_bufType = GetType(Jmp_buf); |
| if (Jmp_bufType.isNull()) { |
| Error("jmp_buf type is NULL"); |
| return; |
| } |
| |
| if (!Context.jmp_bufDecl) { |
| if (const TypedefType *Typedef = Jmp_bufType->getAs<TypedefType>()) |
| Context.setjmp_bufDecl(Typedef->getDecl()); |
| else { |
| const TagType *Tag = Jmp_bufType->getAs<TagType>(); |
| if (!Tag) { |
| Error("Invalid jmp_buf type in AST file"); |
| return; |
| } |
| Context.setjmp_bufDecl(Tag->getDecl()); |
| } |
| } |
| } |
| |
| if (unsigned Sigjmp_buf = SpecialTypes[SPECIAL_TYPE_SIGJMP_BUF]) { |
| QualType Sigjmp_bufType = GetType(Sigjmp_buf); |
| if (Sigjmp_bufType.isNull()) { |
| Error("sigjmp_buf type is NULL"); |
| return; |
| } |
| |
| if (!Context.sigjmp_bufDecl) { |
| if (const TypedefType *Typedef = Sigjmp_bufType->getAs<TypedefType>()) |
| Context.setsigjmp_bufDecl(Typedef->getDecl()); |
| else { |
| const TagType *Tag = Sigjmp_bufType->getAs<TagType>(); |
| assert(Tag && "Invalid sigjmp_buf type in AST file"); |
| Context.setsigjmp_bufDecl(Tag->getDecl()); |
| } |
| } |
| } |
| |
| if (unsigned ObjCIdRedef |
| = SpecialTypes[SPECIAL_TYPE_OBJC_ID_REDEFINITION]) { |
| if (Context.ObjCIdRedefinitionType.isNull()) |
| Context.ObjCIdRedefinitionType = GetType(ObjCIdRedef); |
| } |
| |
| if (unsigned ObjCClassRedef |
| = SpecialTypes[SPECIAL_TYPE_OBJC_CLASS_REDEFINITION]) { |
| if (Context.ObjCClassRedefinitionType.isNull()) |
| Context.ObjCClassRedefinitionType = GetType(ObjCClassRedef); |
| } |
| |
| if (unsigned ObjCSelRedef |
| = SpecialTypes[SPECIAL_TYPE_OBJC_SEL_REDEFINITION]) { |
| if (Context.ObjCSelRedefinitionType.isNull()) |
| Context.ObjCSelRedefinitionType = GetType(ObjCSelRedef); |
| } |
| |
| if (unsigned Ucontext_t = SpecialTypes[SPECIAL_TYPE_UCONTEXT_T]) { |
| QualType Ucontext_tType = GetType(Ucontext_t); |
| if (Ucontext_tType.isNull()) { |
| Error("ucontext_t type is NULL"); |
| return; |
| } |
| |
| if (!Context.ucontext_tDecl) { |
| if (const TypedefType *Typedef = Ucontext_tType->getAs<TypedefType>()) |
| Context.setucontext_tDecl(Typedef->getDecl()); |
| else { |
| const TagType *Tag = Ucontext_tType->getAs<TagType>(); |
| assert(Tag && "Invalid ucontext_t type in AST file"); |
| Context.setucontext_tDecl(Tag->getDecl()); |
| } |
| } |
| } |
| } |
| |
| ReadPragmaDiagnosticMappings(Context.getDiagnostics()); |
| |
| // If there were any CUDA special declarations, deserialize them. |
| if (!CUDASpecialDeclRefs.empty()) { |
| assert(CUDASpecialDeclRefs.size() == 1 && "More decl refs than expected!"); |
| Context.setcudaConfigureCallDecl( |
| cast<FunctionDecl>(GetDecl(CUDASpecialDeclRefs[0]))); |
| } |
| |
| // Re-export any modules that were imported by a non-module AST file. |
| for (unsigned I = 0, N = ImportedModules.size(); I != N; ++I) { |
| if (Module *Imported = getSubmodule(ImportedModules[I])) |
| makeModuleVisible(Imported, Module::AllVisible, |
| /*ImportLoc=*/SourceLocation(), |
| /*Complain=*/false); |
| } |
| ImportedModules.clear(); |
| } |
| |
| void ASTReader::finalizeForWriting() { |
| for (HiddenNamesMapType::iterator Hidden = HiddenNamesMap.begin(), |
| HiddenEnd = HiddenNamesMap.end(); |
| Hidden != HiddenEnd; ++Hidden) { |
| makeNamesVisible(Hidden->second, Hidden->first); |
| } |
| HiddenNamesMap.clear(); |
| } |
| |
| /// SkipCursorToControlBlock - Given a cursor at the start of an AST file, scan |
| /// ahead and drop the cursor into the start of the CONTROL_BLOCK, returning |
| /// false on success and true on failure. |
| static bool SkipCursorToControlBlock(BitstreamCursor &Cursor) { |
| while (1) { |
| llvm::BitstreamEntry Entry = Cursor.advance(); |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::Error: |
| case llvm::BitstreamEntry::EndBlock: |
| return true; |
| |
| case llvm::BitstreamEntry::Record: |
| // Ignore top-level records. |
| Cursor.skipRecord(Entry.ID); |
| break; |
| |
| case llvm::BitstreamEntry::SubBlock: |
| if (Entry.ID == CONTROL_BLOCK_ID) { |
| if (Cursor.EnterSubBlock(CONTROL_BLOCK_ID)) |
| return true; |
| // Found it! |
| return false; |
| } |
| |
| if (Cursor.SkipBlock()) |
| return true; |
| } |
| } |
| } |
| |
| /// \brief Retrieve the name of the original source file name |
| /// directly from the AST file, without actually loading the AST |
| /// file. |
| std::string ASTReader::getOriginalSourceFile(const std::string &ASTFileName, |
| FileManager &FileMgr, |
| DiagnosticsEngine &Diags) { |
| // Open the AST file. |
| std::string ErrStr; |
| OwningPtr<llvm::MemoryBuffer> Buffer; |
| Buffer.reset(FileMgr.getBufferForFile(ASTFileName, &ErrStr)); |
| if (!Buffer) { |
| Diags.Report(diag::err_fe_unable_to_read_pch_file) << ASTFileName << ErrStr; |
| return std::string(); |
| } |
| |
| // Initialize the stream |
| llvm::BitstreamReader StreamFile; |
| BitstreamCursor Stream; |
| StreamFile.init((const unsigned char *)Buffer->getBufferStart(), |
| (const unsigned char *)Buffer->getBufferEnd()); |
| Stream.init(StreamFile); |
| |
| // Sniff for the signature. |
| if (Stream.Read(8) != 'C' || |
| Stream.Read(8) != 'P' || |
| Stream.Read(8) != 'C' || |
| Stream.Read(8) != 'H') { |
| Diags.Report(diag::err_fe_not_a_pch_file) << ASTFileName; |
| return std::string(); |
| } |
| |
| // Scan for the CONTROL_BLOCK_ID block. |
| if (SkipCursorToControlBlock(Stream)) { |
| Diags.Report(diag::err_fe_pch_malformed_block) << ASTFileName; |
| return std::string(); |
| } |
| |
| // Scan for ORIGINAL_FILE inside the control block. |
| RecordData Record; |
| while (1) { |
| llvm::BitstreamEntry Entry = Stream.advanceSkippingSubblocks(); |
| if (Entry.Kind == llvm::BitstreamEntry::EndBlock) |
| return std::string(); |
| |
| if (Entry.Kind != llvm::BitstreamEntry::Record) { |
| Diags.Report(diag::err_fe_pch_malformed_block) << ASTFileName; |
| return std::string(); |
| } |
| |
| Record.clear(); |
| StringRef Blob; |
| if (Stream.readRecord(Entry.ID, Record, &Blob) == ORIGINAL_FILE) |
| return Blob.str(); |
| } |
| } |
| |
| namespace { |
| class SimplePCHValidator : public ASTReaderListener { |
| const LangOptions &ExistingLangOpts; |
| const TargetOptions &ExistingTargetOpts; |
| const PreprocessorOptions &ExistingPPOpts; |
| FileManager &FileMgr; |
| |
| public: |
| SimplePCHValidator(const LangOptions &ExistingLangOpts, |
| const TargetOptions &ExistingTargetOpts, |
| const PreprocessorOptions &ExistingPPOpts, |
| FileManager &FileMgr) |
| : ExistingLangOpts(ExistingLangOpts), |
| ExistingTargetOpts(ExistingTargetOpts), |
| ExistingPPOpts(ExistingPPOpts), |
| FileMgr(FileMgr) |
| { |
| } |
| |
| virtual bool ReadLanguageOptions(const LangOptions &LangOpts, |
| bool Complain) { |
| return checkLanguageOptions(ExistingLangOpts, LangOpts, 0); |
| } |
| virtual bool ReadTargetOptions(const TargetOptions &TargetOpts, |
| bool Complain) { |
| return checkTargetOptions(ExistingTargetOpts, TargetOpts, 0); |
| } |
| virtual bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts, |
| bool Complain, |
| std::string &SuggestedPredefines) { |
| return checkPreprocessorOptions(ExistingPPOpts, PPOpts, 0, FileMgr, |
| SuggestedPredefines, ExistingLangOpts); |
| } |
| }; |
| } |
| |
| bool ASTReader::readASTFileControlBlock(StringRef Filename, |
| FileManager &FileMgr, |
| ASTReaderListener &Listener) { |
| // Open the AST file. |
| std::string ErrStr; |
| OwningPtr<llvm::MemoryBuffer> Buffer; |
| Buffer.reset(FileMgr.getBufferForFile(Filename, &ErrStr)); |
| if (!Buffer) { |
| return true; |
| } |
| |
| // Initialize the stream |
| llvm::BitstreamReader StreamFile; |
| BitstreamCursor Stream; |
| StreamFile.init((const unsigned char *)Buffer->getBufferStart(), |
| (const unsigned char *)Buffer->getBufferEnd()); |
| Stream.init(StreamFile); |
| |
| // Sniff for the signature. |
| if (Stream.Read(8) != 'C' || |
| Stream.Read(8) != 'P' || |
| Stream.Read(8) != 'C' || |
| Stream.Read(8) != 'H') { |
| return true; |
| } |
| |
| // Scan for the CONTROL_BLOCK_ID block. |
| if (SkipCursorToControlBlock(Stream)) |
| return true; |
| |
| // Scan for ORIGINAL_FILE inside the control block. |
| RecordData Record; |
| while (1) { |
| llvm::BitstreamEntry Entry = Stream.advanceSkippingSubblocks(); |
| if (Entry.Kind == llvm::BitstreamEntry::EndBlock) |
| return false; |
| |
| if (Entry.Kind != llvm::BitstreamEntry::Record) |
| return true; |
| |
| Record.clear(); |
| StringRef Blob; |
| unsigned RecCode = Stream.readRecord(Entry.ID, Record, &Blob); |
| switch ((ControlRecordTypes)RecCode) { |
| case METADATA: { |
| if (Record[0] != VERSION_MAJOR) |
| return true; |
| |
| if (Listener.ReadFullVersionInformation(Blob)) |
| return true; |
| |
| break; |
| } |
| case LANGUAGE_OPTIONS: |
| if (ParseLanguageOptions(Record, false, Listener)) |
| return true; |
| break; |
| |
| case TARGET_OPTIONS: |
| if (ParseTargetOptions(Record, false, Listener)) |
| return true; |
| break; |
| |
| case DIAGNOSTIC_OPTIONS: |
| if (ParseDiagnosticOptions(Record, false, Listener)) |
| return true; |
| break; |
| |
| case FILE_SYSTEM_OPTIONS: |
| if (ParseFileSystemOptions(Record, false, Listener)) |
| return true; |
| break; |
| |
| case HEADER_SEARCH_OPTIONS: |
| if (ParseHeaderSearchOptions(Record, false, Listener)) |
| return true; |
| break; |
| |
| case PREPROCESSOR_OPTIONS: { |
| std::string IgnoredSuggestedPredefines; |
| if (ParsePreprocessorOptions(Record, false, Listener, |
| IgnoredSuggestedPredefines)) |
| return true; |
| break; |
| } |
| |
| default: |
| // No other validation to perform. |
| break; |
| } |
| } |
| } |
| |
| |
| bool ASTReader::isAcceptableASTFile(StringRef Filename, |
| FileManager &FileMgr, |
| const LangOptions &LangOpts, |
| const TargetOptions &TargetOpts, |
| const PreprocessorOptions &PPOpts) { |
| SimplePCHValidator validator(LangOpts, TargetOpts, PPOpts, FileMgr); |
| return !readASTFileControlBlock(Filename, FileMgr, validator); |
| } |
| |
| bool ASTReader::ReadSubmoduleBlock(ModuleFile &F) { |
| // Enter the submodule block. |
| if (F.Stream.EnterSubBlock(SUBMODULE_BLOCK_ID)) { |
| Error("malformed submodule block record in AST file"); |
| return true; |
| } |
| |
| ModuleMap &ModMap = PP.getHeaderSearchInfo().getModuleMap(); |
| bool First = true; |
| Module *CurrentModule = 0; |
| RecordData Record; |
| while (true) { |
| llvm::BitstreamEntry Entry = F.Stream.advanceSkippingSubblocks(); |
| |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::SubBlock: // Handled for us already. |
| case llvm::BitstreamEntry::Error: |
| Error("malformed block record in AST file"); |
| return true; |
| case llvm::BitstreamEntry::EndBlock: |
| return false; |
| case llvm::BitstreamEntry::Record: |
| // The interesting case. |
| break; |
| } |
| |
| // Read a record. |
| StringRef Blob; |
| Record.clear(); |
| switch (F.Stream.readRecord(Entry.ID, Record, &Blob)) { |
| default: // Default behavior: ignore. |
| break; |
| |
| case SUBMODULE_DEFINITION: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (Record.size() < 8) { |
| Error("malformed module definition"); |
| return true; |
| } |
| |
| StringRef Name = Blob; |
| SubmoduleID GlobalID = getGlobalSubmoduleID(F, Record[0]); |
| SubmoduleID Parent = getGlobalSubmoduleID(F, Record[1]); |
| bool IsFramework = Record[2]; |
| bool IsExplicit = Record[3]; |
| bool IsSystem = Record[4]; |
| bool InferSubmodules = Record[5]; |
| bool InferExplicitSubmodules = Record[6]; |
| bool InferExportWildcard = Record[7]; |
| bool ConfigMacrosExhaustive = Record[8]; |
| |
| Module *ParentModule = 0; |
| if (Parent) |
| ParentModule = getSubmodule(Parent); |
| |
| // Retrieve this (sub)module from the module map, creating it if |
| // necessary. |
| CurrentModule = ModMap.findOrCreateModule(Name, ParentModule, |
| IsFramework, |
| IsExplicit).first; |
| SubmoduleID GlobalIndex = GlobalID - NUM_PREDEF_SUBMODULE_IDS; |
| if (GlobalIndex >= SubmodulesLoaded.size() || |
| SubmodulesLoaded[GlobalIndex]) { |
| Error("too many submodules"); |
| return true; |
| } |
| |
| if (!ParentModule) { |
| if (const FileEntry *CurFile = CurrentModule->getASTFile()) { |
| if (CurFile != F.File) { |
| if (!Diags.isDiagnosticInFlight()) { |
| Diag(diag::err_module_file_conflict) |
| << CurrentModule->getTopLevelModuleName() |
| << CurFile->getName() |
| << F.File->getName(); |
| } |
| return true; |
| } |
| } |
| |
| CurrentModule->setASTFile(F.File); |
| } |
| |
| CurrentModule->IsFromModuleFile = true; |
| CurrentModule->IsSystem = IsSystem || CurrentModule->IsSystem; |
| CurrentModule->InferSubmodules = InferSubmodules; |
| CurrentModule->InferExplicitSubmodules = InferExplicitSubmodules; |
| CurrentModule->InferExportWildcard = InferExportWildcard; |
| CurrentModule->ConfigMacrosExhaustive = ConfigMacrosExhaustive; |
| if (DeserializationListener) |
| DeserializationListener->ModuleRead(GlobalID, CurrentModule); |
| |
| SubmodulesLoaded[GlobalIndex] = CurrentModule; |
| |
| // Clear out data that will be replaced by what is the module file. |
| CurrentModule->LinkLibraries.clear(); |
| CurrentModule->ConfigMacros.clear(); |
| CurrentModule->UnresolvedConflicts.clear(); |
| CurrentModule->Conflicts.clear(); |
| break; |
| } |
| |
| case SUBMODULE_UMBRELLA_HEADER: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| if (const FileEntry *Umbrella = PP.getFileManager().getFile(Blob)) { |
| if (!CurrentModule->getUmbrellaHeader()) |
| ModMap.setUmbrellaHeader(CurrentModule, Umbrella); |
| else if (CurrentModule->getUmbrellaHeader() != Umbrella) { |
| Error("mismatched umbrella headers in submodule"); |
| return true; |
| } |
| } |
| break; |
| } |
| |
| case SUBMODULE_HEADER: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| // We lazily associate headers with their modules via the HeaderInfoTable. |
| // FIXME: Re-evaluate this section; maybe only store InputFile IDs instead |
| // of complete filenames or remove it entirely. |
| break; |
| } |
| |
| case SUBMODULE_EXCLUDED_HEADER: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| // We lazily associate headers with their modules via the HeaderInfoTable. |
| // FIXME: Re-evaluate this section; maybe only store InputFile IDs instead |
| // of complete filenames or remove it entirely. |
| break; |
| } |
| |
| case SUBMODULE_TOPHEADER: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| CurrentModule->addTopHeaderFilename(Blob); |
| break; |
| } |
| |
| case SUBMODULE_UMBRELLA_DIR: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| if (const DirectoryEntry *Umbrella |
| = PP.getFileManager().getDirectory(Blob)) { |
| if (!CurrentModule->getUmbrellaDir()) |
| ModMap.setUmbrellaDir(CurrentModule, Umbrella); |
| else if (CurrentModule->getUmbrellaDir() != Umbrella) { |
| Error("mismatched umbrella directories in submodule"); |
| return true; |
| } |
| } |
| break; |
| } |
| |
| case SUBMODULE_METADATA: { |
| if (!First) { |
| Error("submodule metadata record not at beginning of block"); |
| return true; |
| } |
| First = false; |
| |
| F.BaseSubmoduleID = getTotalNumSubmodules(); |
| F.LocalNumSubmodules = Record[0]; |
| unsigned LocalBaseSubmoduleID = Record[1]; |
| if (F.LocalNumSubmodules > 0) { |
| // Introduce the global -> local mapping for submodules within this |
| // module. |
| GlobalSubmoduleMap.insert(std::make_pair(getTotalNumSubmodules()+1,&F)); |
| |
| // Introduce the local -> global mapping for submodules within this |
| // module. |
| F.SubmoduleRemap.insertOrReplace( |
| std::make_pair(LocalBaseSubmoduleID, |
| F.BaseSubmoduleID - LocalBaseSubmoduleID)); |
| |
| SubmodulesLoaded.resize(SubmodulesLoaded.size() + F.LocalNumSubmodules); |
| } |
| break; |
| } |
| |
| case SUBMODULE_IMPORTS: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| for (unsigned Idx = 0; Idx != Record.size(); ++Idx) { |
| UnresolvedModuleRef Unresolved; |
| Unresolved.File = &F; |
| Unresolved.Mod = CurrentModule; |
| Unresolved.ID = Record[Idx]; |
| Unresolved.Kind = UnresolvedModuleRef::Import; |
| Unresolved.IsWildcard = false; |
| UnresolvedModuleRefs.push_back(Unresolved); |
| } |
| break; |
| } |
| |
| case SUBMODULE_EXPORTS: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| for (unsigned Idx = 0; Idx + 1 < Record.size(); Idx += 2) { |
| UnresolvedModuleRef Unresolved; |
| Unresolved.File = &F; |
| Unresolved.Mod = CurrentModule; |
| Unresolved.ID = Record[Idx]; |
| Unresolved.Kind = UnresolvedModuleRef::Export; |
| Unresolved.IsWildcard = Record[Idx + 1]; |
| UnresolvedModuleRefs.push_back(Unresolved); |
| } |
| |
| // Once we've loaded the set of exports, there's no reason to keep |
| // the parsed, unresolved exports around. |
| CurrentModule->UnresolvedExports.clear(); |
| break; |
| } |
| case SUBMODULE_REQUIRES: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| CurrentModule->addRequirement(Blob, Context.getLangOpts(), |
| Context.getTargetInfo()); |
| break; |
| } |
| |
| case SUBMODULE_LINK_LIBRARY: |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| CurrentModule->LinkLibraries.push_back( |
| Module::LinkLibrary(Blob, Record[0])); |
| break; |
| |
| case SUBMODULE_CONFIG_MACRO: |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| CurrentModule->ConfigMacros.push_back(Blob.str()); |
| break; |
| |
| case SUBMODULE_CONFLICT: { |
| if (First) { |
| Error("missing submodule metadata record at beginning of block"); |
| return true; |
| } |
| |
| if (!CurrentModule) |
| break; |
| |
| UnresolvedModuleRef Unresolved; |
| Unresolved.File = &F; |
| Unresolved.Mod = CurrentModule; |
| Unresolved.ID = Record[0]; |
| Unresolved.Kind = UnresolvedModuleRef::Conflict; |
| Unresolved.IsWildcard = false; |
| Unresolved.String = Blob; |
| UnresolvedModuleRefs.push_back(Unresolved); |
| break; |
| } |
| } |
| } |
| } |
| |
| /// \brief Parse the record that corresponds to a LangOptions data |
| /// structure. |
| /// |
| /// This routine parses the language options from the AST file and then gives |
| /// them to the AST listener if one is set. |
| /// |
| /// \returns true if the listener deems the file unacceptable, false otherwise. |
| bool ASTReader::ParseLanguageOptions(const RecordData &Record, |
| bool Complain, |
| ASTReaderListener &Listener) { |
| LangOptions LangOpts; |
| unsigned Idx = 0; |
| #define LANGOPT(Name, Bits, Default, Description) \ |
| LangOpts.Name = Record[Idx++]; |
| #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ |
| LangOpts.set##Name(static_cast<LangOptions::Type>(Record[Idx++])); |
| #include "clang/Basic/LangOptions.def" |
| #define SANITIZER(NAME, ID) LangOpts.Sanitize.ID = Record[Idx++]; |
| #include "clang/Basic/Sanitizers.def" |
| |
| ObjCRuntime::Kind runtimeKind = (ObjCRuntime::Kind) Record[Idx++]; |
| VersionTuple runtimeVersion = ReadVersionTuple(Record, Idx); |
| LangOpts.ObjCRuntime = ObjCRuntime(runtimeKind, runtimeVersion); |
| |
| unsigned Length = Record[Idx++]; |
| LangOpts.CurrentModule.assign(Record.begin() + Idx, |
| Record.begin() + Idx + Length); |
| |
| Idx += Length; |
| |
| // Comment options. |
| for (unsigned N = Record[Idx++]; N; --N) { |
| LangOpts.CommentOpts.BlockCommandNames.push_back( |
| ReadString(Record, Idx)); |
| } |
| LangOpts.CommentOpts.ParseAllComments = Record[Idx++]; |
| |
| return Listener.ReadLanguageOptions(LangOpts, Complain); |
| } |
| |
| bool ASTReader::ParseTargetOptions(const RecordData &Record, |
| bool Complain, |
| ASTReaderListener &Listener) { |
| unsigned Idx = 0; |
| TargetOptions TargetOpts; |
| TargetOpts.Triple = ReadString(Record, Idx); |
| TargetOpts.CPU = ReadString(Record, Idx); |
| TargetOpts.ABI = ReadString(Record, Idx); |
| TargetOpts.CXXABI = ReadString(Record, Idx); |
| TargetOpts.LinkerVersion = ReadString(Record, Idx); |
| for (unsigned N = Record[Idx++]; N; --N) { |
| TargetOpts.FeaturesAsWritten.push_back(ReadString(Record, Idx)); |
| } |
| for (unsigned N = Record[Idx++]; N; --N) { |
| TargetOpts.Features.push_back(ReadString(Record, Idx)); |
| } |
| |
| return Listener.ReadTargetOptions(TargetOpts, Complain); |
| } |
| |
| bool ASTReader::ParseDiagnosticOptions(const RecordData &Record, bool Complain, |
| ASTReaderListener &Listener) { |
| DiagnosticOptions DiagOpts; |
| unsigned Idx = 0; |
| #define DIAGOPT(Name, Bits, Default) DiagOpts.Name = Record[Idx++]; |
| #define ENUM_DIAGOPT(Name, Type, Bits, Default) \ |
| DiagOpts.set##Name(static_cast<Type>(Record[Idx++])); |
| #include "clang/Basic/DiagnosticOptions.def" |
| |
| for (unsigned N = Record[Idx++]; N; --N) { |
| DiagOpts.Warnings.push_back(ReadString(Record, Idx)); |
| } |
| |
| return Listener.ReadDiagnosticOptions(DiagOpts, Complain); |
| } |
| |
| bool ASTReader::ParseFileSystemOptions(const RecordData &Record, bool Complain, |
| ASTReaderListener &Listener) { |
| FileSystemOptions FSOpts; |
| unsigned Idx = 0; |
| FSOpts.WorkingDir = ReadString(Record, Idx); |
| return Listener.ReadFileSystemOptions(FSOpts, Complain); |
| } |
| |
| bool ASTReader::ParseHeaderSearchOptions(const RecordData &Record, |
| bool Complain, |
| ASTReaderListener &Listener) { |
| HeaderSearchOptions HSOpts; |
| unsigned Idx = 0; |
| HSOpts.Sysroot = ReadString(Record, Idx); |
| |
| // Include entries. |
| for (unsigned N = Record[Idx++]; N; --N) { |
| std::string Path = ReadString(Record, Idx); |
| frontend::IncludeDirGroup Group |
| = static_cast<frontend::IncludeDirGroup>(Record[Idx++]); |
| bool IsFramework = Record[Idx++]; |
| bool IgnoreSysRoot = Record[Idx++]; |
| HSOpts.UserEntries.push_back( |
| HeaderSearchOptions::Entry(Path, Group, IsFramework, IgnoreSysRoot)); |
| } |
| |
| // System header prefixes. |
| for (unsigned N = Record[Idx++]; N; --N) { |
| std::string Prefix = ReadString(Record, Idx); |
| bool IsSystemHeader = Record[Idx++]; |
| HSOpts.SystemHeaderPrefixes.push_back( |
| HeaderSearchOptions::SystemHeaderPrefix(Prefix, IsSystemHeader)); |
| } |
| |
| HSOpts.ResourceDir = ReadString(Record, Idx); |
| HSOpts.ModuleCachePath = ReadString(Record, Idx); |
| HSOpts.DisableModuleHash = Record[Idx++]; |
| HSOpts.UseBuiltinIncludes = Record[Idx++]; |
| HSOpts.UseStandardSystemIncludes = Record[Idx++]; |
| HSOpts.UseStandardCXXIncludes = Record[Idx++]; |
| HSOpts.UseLibcxx = Record[Idx++]; |
| |
| return Listener.ReadHeaderSearchOptions(HSOpts, Complain); |
| } |
| |
| bool ASTReader::ParsePreprocessorOptions(const RecordData &Record, |
| bool Complain, |
| ASTReaderListener &Listener, |
| std::string &SuggestedPredefines) { |
| PreprocessorOptions PPOpts; |
| unsigned Idx = 0; |
| |
| // Macro definitions/undefs |
| for (unsigned N = Record[Idx++]; N; --N) { |
| std::string Macro = ReadString(Record, Idx); |
| bool IsUndef = Record[Idx++]; |
| PPOpts.Macros.push_back(std::make_pair(Macro, IsUndef)); |
| } |
| |
| // Includes |
| for (unsigned N = Record[Idx++]; N; --N) { |
| PPOpts.Includes.push_back(ReadString(Record, Idx)); |
| } |
| |
| // Macro Includes |
| for (unsigned N = Record[Idx++]; N; --N) { |
| PPOpts.MacroIncludes.push_back(ReadString(Record, Idx)); |
| } |
| |
| PPOpts.UsePredefines = Record[Idx++]; |
| PPOpts.DetailedRecord = Record[Idx++]; |
| PPOpts.ImplicitPCHInclude = ReadString(Record, Idx); |
| PPOpts.ImplicitPTHInclude = ReadString(Record, Idx); |
| PPOpts.ObjCXXARCStandardLibrary = |
| static_cast<ObjCXXARCStandardLibraryKind>(Record[Idx++]); |
| SuggestedPredefines.clear(); |
| return Listener.ReadPreprocessorOptions(PPOpts, Complain, |
| SuggestedPredefines); |
| } |
| |
| std::pair<ModuleFile *, unsigned> |
| ASTReader::getModulePreprocessedEntity(unsigned GlobalIndex) { |
| GlobalPreprocessedEntityMapType::iterator |
| I = GlobalPreprocessedEntityMap.find(GlobalIndex); |
| assert(I != GlobalPreprocessedEntityMap.end() && |
| "Corrupted global preprocessed entity map"); |
| ModuleFile *M = I->second; |
| unsigned LocalIndex = GlobalIndex - M->BasePreprocessedEntityID; |
| return std::make_pair(M, LocalIndex); |
| } |
| |
| std::pair<PreprocessingRecord::iterator, PreprocessingRecord::iterator> |
| ASTReader::getModulePreprocessedEntities(ModuleFile &Mod) const { |
| if (PreprocessingRecord *PPRec = PP.getPreprocessingRecord()) |
| return PPRec->getIteratorsForLoadedRange(Mod.BasePreprocessedEntityID, |
| Mod.NumPreprocessedEntities); |
| |
| return std::make_pair(PreprocessingRecord::iterator(), |
| PreprocessingRecord::iterator()); |
| } |
| |
| std::pair<ASTReader::ModuleDeclIterator, ASTReader::ModuleDeclIterator> |
| ASTReader::getModuleFileLevelDecls(ModuleFile &Mod) { |
| return std::make_pair(ModuleDeclIterator(this, &Mod, Mod.FileSortedDecls), |
| ModuleDeclIterator(this, &Mod, |
| Mod.FileSortedDecls + Mod.NumFileSortedDecls)); |
| } |
| |
| PreprocessedEntity *ASTReader::ReadPreprocessedEntity(unsigned Index) { |
| PreprocessedEntityID PPID = Index+1; |
| std::pair<ModuleFile *, unsigned> PPInfo = getModulePreprocessedEntity(Index); |
| ModuleFile &M = *PPInfo.first; |
| unsigned LocalIndex = PPInfo.second; |
| const PPEntityOffset &PPOffs = M.PreprocessedEntityOffsets[LocalIndex]; |
| |
| if (!PP.getPreprocessingRecord()) { |
| Error("no preprocessing record"); |
| return 0; |
| } |
| |
| SavedStreamPosition SavedPosition(M.PreprocessorDetailCursor); |
| M.PreprocessorDetailCursor.JumpToBit(PPOffs.BitOffset); |
| |
| llvm::BitstreamEntry Entry = |
| M.PreprocessorDetailCursor.advance(BitstreamCursor::AF_DontPopBlockAtEnd); |
| if (Entry.Kind != llvm::BitstreamEntry::Record) |
| return 0; |
| |
| // Read the record. |
| SourceRange Range(ReadSourceLocation(M, PPOffs.Begin), |
| ReadSourceLocation(M, PPOffs.End)); |
| PreprocessingRecord &PPRec = *PP.getPreprocessingRecord(); |
| StringRef Blob; |
| RecordData Record; |
| PreprocessorDetailRecordTypes RecType = |
| (PreprocessorDetailRecordTypes)M.PreprocessorDetailCursor.readRecord( |
| Entry.ID, Record, &Blob); |
| switch (RecType) { |
| case PPD_MACRO_EXPANSION: { |
| bool isBuiltin = Record[0]; |
| IdentifierInfo *Name = 0; |
| MacroDefinition *Def = 0; |
| if (isBuiltin) |
| Name = getLocalIdentifier(M, Record[1]); |
| else { |
| PreprocessedEntityID |
| GlobalID = getGlobalPreprocessedEntityID(M, Record[1]); |
| Def =cast<MacroDefinition>(PPRec.getLoadedPreprocessedEntity(GlobalID-1)); |
| } |
| |
| MacroExpansion *ME; |
| if (isBuiltin) |
| ME = new (PPRec) MacroExpansion(Name, Range); |
| else |
| ME = new (PPRec) MacroExpansion(Def, Range); |
| |
| return ME; |
| } |
| |
| case PPD_MACRO_DEFINITION: { |
| // Decode the identifier info and then check again; if the macro is |
| // still defined and associated with the identifier, |
| IdentifierInfo *II = getLocalIdentifier(M, Record[0]); |
| MacroDefinition *MD |
| = new (PPRec) MacroDefinition(II, Range); |
| |
| if (DeserializationListener) |
| DeserializationListener->MacroDefinitionRead(PPID, MD); |
| |
| return MD; |
| } |
| |
| case PPD_INCLUSION_DIRECTIVE: { |
| const char *FullFileNameStart = Blob.data() + Record[0]; |
| StringRef FullFileName(FullFileNameStart, Blob.size() - Record[0]); |
| const FileEntry *File = 0; |
| if (!FullFileName.empty()) |
| File = PP.getFileManager().getFile(FullFileName); |
| |
| // FIXME: Stable encoding |
| InclusionDirective::InclusionKind Kind |
| = static_cast<InclusionDirective::InclusionKind>(Record[2]); |
| InclusionDirective *ID |
| = new (PPRec) InclusionDirective(PPRec, Kind, |
| StringRef(Blob.data(), Record[0]), |
| Record[1], Record[3], |
| File, |
| Range); |
| return ID; |
| } |
| } |
| |
| llvm_unreachable("Invalid PreprocessorDetailRecordTypes"); |
| } |
| |
| /// \brief \arg SLocMapI points at a chunk of a module that contains no |
| /// preprocessed entities or the entities it contains are not the ones we are |
| /// looking for. Find the next module that contains entities and return the ID |
| /// of the first entry. |
| PreprocessedEntityID ASTReader::findNextPreprocessedEntity( |
| GlobalSLocOffsetMapType::const_iterator SLocMapI) const { |
| ++SLocMapI; |
| for (GlobalSLocOffsetMapType::const_iterator |
| EndI = GlobalSLocOffsetMap.end(); SLocMapI != EndI; ++SLocMapI) { |
| ModuleFile &M = *SLocMapI->second; |
| if (M.NumPreprocessedEntities) |
| return M.BasePreprocessedEntityID; |
| } |
| |
| return getTotalNumPreprocessedEntities(); |
| } |
| |
| namespace { |
| |
| template <unsigned PPEntityOffset::*PPLoc> |
| struct PPEntityComp { |
| const ASTReader &Reader; |
| ModuleFile &M; |
| |
| PPEntityComp(const ASTReader &Reader, ModuleFile &M) : Reader(Reader), M(M) { } |
| |
| bool operator()(const PPEntityOffset &L, const PPEntityOffset &R) const { |
| SourceLocation LHS = getLoc(L); |
| SourceLocation RHS = getLoc(R); |
| return Reader.getSourceManager().isBeforeInTranslationUnit(LHS, RHS); |
| } |
| |
| bool operator()(const PPEntityOffset &L, SourceLocation RHS) const { |
| SourceLocation LHS = getLoc(L); |
| return Reader.getSourceManager().isBeforeInTranslationUnit(LHS, RHS); |
| } |
| |
| bool operator()(SourceLocation LHS, const PPEntityOffset &R) const { |
| SourceLocation RHS = getLoc(R); |
| return Reader.getSourceManager().isBeforeInTranslationUnit(LHS, RHS); |
| } |
| |
| SourceLocation getLoc(const PPEntityOffset &PPE) const { |
| return Reader.ReadSourceLocation(M, PPE.*PPLoc); |
| } |
| }; |
| |
| } |
| |
| /// \brief Returns the first preprocessed entity ID that ends after \arg BLoc. |
| PreprocessedEntityID |
| ASTReader::findBeginPreprocessedEntity(SourceLocation BLoc) const { |
| if (SourceMgr.isLocalSourceLocation(BLoc)) |
| return getTotalNumPreprocessedEntities(); |
| |
| GlobalSLocOffsetMapType::const_iterator |
| SLocMapI = GlobalSLocOffsetMap.find(SourceManager::MaxLoadedOffset - |
| BLoc.getOffset() - 1); |
| assert(SLocMapI != GlobalSLocOffsetMap.end() && |
| "Corrupted global sloc offset map"); |
| |
| if (SLocMapI->second->NumPreprocessedEntities == 0) |
| return findNextPreprocessedEntity(SLocMapI); |
| |
| ModuleFile &M = *SLocMapI->second; |
| typedef const PPEntityOffset *pp_iterator; |
| pp_iterator pp_begin = M.PreprocessedEntityOffsets; |
| pp_iterator pp_end = pp_begin + M.NumPreprocessedEntities; |
| |
| size_t Count = M.NumPreprocessedEntities; |
| size_t Half; |
| pp_iterator First = pp_begin; |
| pp_iterator PPI; |
| |
| // Do a binary search manually instead of using std::lower_bound because |
| // The end locations of entities may be unordered (when a macro expansion |
| // is inside another macro argument), but for this case it is not important |
| // whether we get the first macro expansion or its containing macro. |
| while (Count > 0) { |
| Half = Count/2; |
| PPI = First; |
| std::advance(PPI, Half); |
| if (SourceMgr.isBeforeInTranslationUnit(ReadSourceLocation(M, PPI->End), |
| BLoc)){ |
| First = PPI; |
| ++First; |
| Count = Count - Half - 1; |
| } else |
| Count = Half; |
| } |
| |
| if (PPI == pp_end) |
| return findNextPreprocessedEntity(SLocMapI); |
| |
| return M.BasePreprocessedEntityID + (PPI - pp_begin); |
| } |
| |
| /// \brief Returns the first preprocessed entity ID that begins after \arg ELoc. |
| PreprocessedEntityID |
| ASTReader::findEndPreprocessedEntity(SourceLocation ELoc) const { |
| if (SourceMgr.isLocalSourceLocation(ELoc)) |
| return getTotalNumPreprocessedEntities(); |
| |
| GlobalSLocOffsetMapType::const_iterator |
| SLocMapI = GlobalSLocOffsetMap.find(SourceManager::MaxLoadedOffset - |
| ELoc.getOffset() - 1); |
| assert(SLocMapI != GlobalSLocOffsetMap.end() && |
| "Corrupted global sloc offset map"); |
| |
| if (SLocMapI->second->NumPreprocessedEntities == 0) |
| return findNextPreprocessedEntity(SLocMapI); |
| |
| ModuleFile &M = *SLocMapI->second; |
| typedef const PPEntityOffset *pp_iterator; |
| pp_iterator pp_begin = M.PreprocessedEntityOffsets; |
| pp_iterator pp_end = pp_begin + M.NumPreprocessedEntities; |
| pp_iterator PPI = |
| std::upper_bound(pp_begin, pp_end, ELoc, |
| PPEntityComp<&PPEntityOffset::Begin>(*this, M)); |
| |
| if (PPI == pp_end) |
| return findNextPreprocessedEntity(SLocMapI); |
| |
| return M.BasePreprocessedEntityID + (PPI - pp_begin); |
| } |
| |
| /// \brief Returns a pair of [Begin, End) indices of preallocated |
| /// preprocessed entities that \arg Range encompasses. |
| std::pair<unsigned, unsigned> |
| ASTReader::findPreprocessedEntitiesInRange(SourceRange Range) { |
| if (Range.isInvalid()) |
| return std::make_pair(0,0); |
| assert(!SourceMgr.isBeforeInTranslationUnit(Range.getEnd(),Range.getBegin())); |
| |
| PreprocessedEntityID BeginID = findBeginPreprocessedEntity(Range.getBegin()); |
| PreprocessedEntityID EndID = findEndPreprocessedEntity(Range.getEnd()); |
| return std::make_pair(BeginID, EndID); |
| } |
| |
| /// \brief Optionally returns true or false if the preallocated preprocessed |
| /// entity with index \arg Index came from file \arg FID. |
| Optional<bool> ASTReader::isPreprocessedEntityInFileID(unsigned Index, |
| FileID FID) { |
| if (FID.isInvalid()) |
| return false; |
| |
| std::pair<ModuleFile *, unsigned> PPInfo = getModulePreprocessedEntity(Index); |
| ModuleFile &M = *PPInfo.first; |
| unsigned LocalIndex = PPInfo.second; |
| const PPEntityOffset &PPOffs = M.PreprocessedEntityOffsets[LocalIndex]; |
| |
| SourceLocation Loc = ReadSourceLocation(M, PPOffs.Begin); |
| if (Loc.isInvalid()) |
| return false; |
| |
| if (SourceMgr.isInFileID(SourceMgr.getFileLoc(Loc), FID)) |
| return true; |
| else |
| return false; |
| } |
| |
| namespace { |
| /// \brief Visitor used to search for information about a header file. |
| class HeaderFileInfoVisitor { |
| const FileEntry *FE; |
| |
| Optional<HeaderFileInfo> HFI; |
| |
| public: |
| explicit HeaderFileInfoVisitor(const FileEntry *FE) |
| : FE(FE) { } |
| |
| static bool visit(ModuleFile &M, void *UserData) { |
| HeaderFileInfoVisitor *This |
| = static_cast<HeaderFileInfoVisitor *>(UserData); |
| |
| HeaderFileInfoLookupTable *Table |
| = static_cast<HeaderFileInfoLookupTable *>(M.HeaderFileInfoTable); |
| if (!Table) |
| return false; |
| |
| // Look in the on-disk hash table for an entry for this file name. |
| HeaderFileInfoLookupTable::iterator Pos = Table->find(This->FE); |
| if (Pos == Table->end()) |
| return false; |
| |
| This->HFI = *Pos; |
| return true; |
| } |
| |
| Optional<HeaderFileInfo> getHeaderFileInfo() const { return HFI; } |
| }; |
| } |
| |
| HeaderFileInfo ASTReader::GetHeaderFileInfo(const FileEntry *FE) { |
| HeaderFileInfoVisitor Visitor(FE); |
| ModuleMgr.visit(&HeaderFileInfoVisitor::visit, &Visitor); |
| if (Optional<HeaderFileInfo> HFI = Visitor.getHeaderFileInfo()) { |
| if (Listener) |
| Listener->ReadHeaderFileInfo(*HFI, FE->getUID()); |
| return *HFI; |
| } |
| |
| return HeaderFileInfo(); |
| } |
| |
| void ASTReader::ReadPragmaDiagnosticMappings(DiagnosticsEngine &Diag) { |
| // FIXME: Make it work properly with modules. |
| SmallVector<DiagnosticsEngine::DiagState *, 32> DiagStates; |
| for (ModuleIterator I = ModuleMgr.begin(), E = ModuleMgr.end(); I != E; ++I) { |
| ModuleFile &F = *(*I); |
| unsigned Idx = 0; |
| DiagStates.clear(); |
| assert(!Diag.DiagStates.empty()); |
| DiagStates.push_back(&Diag.DiagStates.front()); // the command-line one. |
| while (Idx < F.PragmaDiagMappings.size()) { |
| SourceLocation Loc = ReadSourceLocation(F, F.PragmaDiagMappings[Idx++]); |
| unsigned DiagStateID = F.PragmaDiagMappings[Idx++]; |
| if (DiagStateID != 0) { |
| Diag.DiagStatePoints.push_back( |
| DiagnosticsEngine::DiagStatePoint(DiagStates[DiagStateID-1], |
| FullSourceLoc(Loc, SourceMgr))); |
| continue; |
| } |
| |
| assert(DiagStateID == 0); |
| // A new DiagState was created here. |
| Diag.DiagStates.push_back(*Diag.GetCurDiagState()); |
| DiagnosticsEngine::DiagState *NewState = &Diag.DiagStates.back(); |
| DiagStates.push_back(NewState); |
| Diag.DiagStatePoints.push_back( |
| DiagnosticsEngine::DiagStatePoint(NewState, |
| FullSourceLoc(Loc, SourceMgr))); |
| while (1) { |
| assert(Idx < F.PragmaDiagMappings.size() && |
| "Invalid data, didn't find '-1' marking end of diag/map pairs"); |
| if (Idx >= F.PragmaDiagMappings.size()) { |
| break; // Something is messed up but at least avoid infinite loop in |
| // release build. |
| } |
| unsigned DiagID = F.PragmaDiagMappings[Idx++]; |
| if (DiagID == (unsigned)-1) { |
| break; // no more diag/map pairs for this location. |
| } |
| diag::Mapping Map = (diag::Mapping)F.PragmaDiagMappings[Idx++]; |
| DiagnosticMappingInfo MappingInfo = Diag.makeMappingInfo(Map, Loc); |
| Diag.GetCurDiagState()->setMappingInfo(DiagID, MappingInfo); |
| } |
| } |
| } |
| } |
| |
| /// \brief Get the correct cursor and offset for loading a type. |
| ASTReader::RecordLocation ASTReader::TypeCursorForIndex(unsigned Index) { |
| GlobalTypeMapType::iterator I = GlobalTypeMap.find(Index); |
| assert(I != GlobalTypeMap.end() && "Corrupted global type map"); |
| ModuleFile *M = I->second; |
| return RecordLocation(M, M->TypeOffsets[Index - M->BaseTypeIndex]); |
| } |
| |
| /// \brief Read and return the type with the given index.. |
| /// |
| /// The index is the type ID, shifted and minus the number of predefs. This |
| /// routine actually reads the record corresponding to the type at the given |
| /// location. It is a helper routine for GetType, which deals with reading type |
| /// IDs. |
| QualType ASTReader::readTypeRecord(unsigned Index) { |
| RecordLocation Loc = TypeCursorForIndex(Index); |
| BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor; |
| |
| // Keep track of where we are in the stream, then jump back there |
| // after reading this type. |
| SavedStreamPosition SavedPosition(DeclsCursor); |
| |
| ReadingKindTracker ReadingKind(Read_Type, *this); |
| |
| // Note that we are loading a type record. |
| Deserializing AType(this); |
| |
| unsigned Idx = 0; |
| DeclsCursor.JumpToBit(Loc.Offset); |
| RecordData Record; |
| unsigned Code = DeclsCursor.ReadCode(); |
| switch ((TypeCode)DeclsCursor.readRecord(Code, Record)) { |
| case TYPE_EXT_QUAL: { |
| if (Record.size() != 2) { |
| Error("Incorrect encoding of extended qualifier type"); |
| return QualType(); |
| } |
| QualType Base = readType(*Loc.F, Record, Idx); |
| Qualifiers Quals = Qualifiers::fromOpaqueValue(Record[Idx++]); |
| return Context.getQualifiedType(Base, Quals); |
| } |
| |
| case TYPE_COMPLEX: { |
| if (Record.size() != 1) { |
| Error("Incorrect encoding of complex type"); |
| return QualType(); |
| } |
| QualType ElemType = readType(*Loc.F, Record, Idx); |
| return Context.getComplexType(ElemType); |
| } |
| |
| case TYPE_POINTER: { |
| if (Record.size() != 1) { |
| Error("Incorrect encoding of pointer type"); |
| return QualType(); |
| } |
| QualType PointeeType = readType(*Loc.F, Record, Idx); |
| return Context.getPointerType(PointeeType); |
| } |
| |
| case TYPE_BLOCK_POINTER: { |
| if (Record.size() != 1) { |
| Error("Incorrect encoding of block pointer type"); |
| return QualType(); |
| } |
| QualType PointeeType = readType(*Loc.F, Record, Idx); |
| return Context.getBlockPointerType(PointeeType); |
| } |
| |
| case TYPE_LVALUE_REFERENCE: { |
| if (Record.size() != 2) { |
| Error("Incorrect encoding of lvalue reference type"); |
| return QualType(); |
| } |
| QualType PointeeType = readType(*Loc.F, Record, Idx); |
| return Context.getLValueReferenceType(PointeeType, Record[1]); |
| } |
| |
| case TYPE_RVALUE_REFERENCE: { |
| if (Record.size() != 1) { |
| Error("Incorrect encoding of rvalue reference type"); |
| return QualType(); |
| } |
| QualType PointeeType = readType(*Loc.F, Record, Idx); |
| return Context.getRValueReferenceType(PointeeType); |
| } |
| |
| case TYPE_MEMBER_POINTER: { |
| if (Record.size() != 2) { |
| Error("Incorrect encoding of member pointer type"); |
| return QualType(); |
| } |
| QualType PointeeType = readType(*Loc.F, Record, Idx); |
| QualType ClassType = readType(*Loc.F, Record, Idx); |
| if (PointeeType.isNull() || ClassType.isNull()) |
| return QualType(); |
| |
| return Context.getMemberPointerType(PointeeType, ClassType.getTypePtr()); |
| } |
| |
| case TYPE_CONSTANT_ARRAY: { |
| QualType ElementType = readType(*Loc.F, Record, Idx); |
| ArrayType::ArraySizeModifier ASM = (ArrayType::ArraySizeModifier)Record[1]; |
| unsigned IndexTypeQuals = Record[2]; |
| unsigned Idx = 3; |
| llvm::APInt Size = ReadAPInt(Record, Idx); |
| return Context.getConstantArrayType(ElementType, Size, |
| ASM, IndexTypeQuals); |
| } |
| |
| case TYPE_INCOMPLETE_ARRAY: { |
| QualType ElementType = readType(*Loc.F, Record, Idx); |
| ArrayType::ArraySizeModifier ASM = (ArrayType::ArraySizeModifier)Record[1]; |
| unsigned IndexTypeQuals = Record[2]; |
| return Context.getIncompleteArrayType(ElementType, ASM, IndexTypeQuals); |
| } |
| |
| case TYPE_VARIABLE_ARRAY: { |
| QualType ElementType = readType(*Loc.F, Record, Idx); |
| ArrayType::ArraySizeModifier ASM = (ArrayType::ArraySizeModifier)Record[1]; |
| unsigned IndexTypeQuals = Record[2]; |
| SourceLocation LBLoc = ReadSourceLocation(*Loc.F, Record[3]); |
| SourceLocation RBLoc = ReadSourceLocation(*Loc.F, Record[4]); |
| return Context.getVariableArrayType(ElementType, ReadExpr(*Loc.F), |
| ASM, IndexTypeQuals, |
| SourceRange(LBLoc, RBLoc)); |
| } |
| |
| case TYPE_VECTOR: { |
| if (Record.size() != 3) { |
| Error("incorrect encoding of vector type in AST file"); |
| return QualType(); |
| } |
| |
| QualType ElementType = readType(*Loc.F, Record, Idx); |
| unsigned NumElements = Record[1]; |
| unsigned VecKind = Record[2]; |
| return Context.getVectorType(ElementType, NumElements, |
| (VectorType::VectorKind)VecKind); |
| } |
| |
| case TYPE_EXT_VECTOR: { |
| if (Record.size() != 3) { |
| Error("incorrect encoding of extended vector type in AST file"); |
| return QualType(); |
| } |
| |
| QualType ElementType = readType(*Loc.F, Record, Idx); |
| unsigned NumElements = Record[1]; |
| return Context.getExtVectorType(ElementType, NumElements); |
| } |
| |
| case TYPE_FUNCTION_NO_PROTO: { |
| if (Record.size() != 6) { |
| Error("incorrect encoding of no-proto function type"); |
| return QualType(); |
| } |
| QualType ResultType = readType(*Loc.F, Record, Idx); |
| FunctionType::ExtInfo Info(Record[1], Record[2], Record[3], |
| (CallingConv)Record[4], Record[5]); |
| return Context.getFunctionNoProtoType(ResultType, Info); |
| } |
| |
| case TYPE_FUNCTION_PROTO: { |
| QualType ResultType = readType(*Loc.F, Record, Idx); |
| |
| FunctionProtoType::ExtProtoInfo EPI; |
| EPI.ExtInfo = FunctionType::ExtInfo(/*noreturn*/ Record[1], |
| /*hasregparm*/ Record[2], |
| /*regparm*/ Record[3], |
| static_cast<CallingConv>(Record[4]), |
| /*produces*/ Record[5]); |
| |
| unsigned Idx = 6; |
| unsigned NumParams = Record[Idx++]; |
| SmallVector<QualType, 16> ParamTypes; |
| for (unsigned I = 0; I != NumParams; ++I) |
| ParamTypes.push_back(readType(*Loc.F, Record, Idx)); |
| |
| EPI.Variadic = Record[Idx++]; |
| EPI.HasTrailingReturn = Record[Idx++]; |
| EPI.TypeQuals = Record[Idx++]; |
| EPI.RefQualifier = static_cast<RefQualifierKind>(Record[Idx++]); |
| ExceptionSpecificationType EST = |
| static_cast<ExceptionSpecificationType>(Record[Idx++]); |
| EPI.ExceptionSpecType = EST; |
| SmallVector<QualType, 2> Exceptions; |
| if (EST == EST_Dynamic) { |
| EPI.NumExceptions = Record[Idx++]; |
| for (unsigned I = 0; I != EPI.NumExceptions; ++I) |
| Exceptions.push_back(readType(*Loc.F, Record, Idx)); |
| EPI.Exceptions = Exceptions.data(); |
| } else if (EST == EST_ComputedNoexcept) { |
| EPI.NoexceptExpr = ReadExpr(*Loc.F); |
| } else if (EST == EST_Uninstantiated) { |
| EPI.ExceptionSpecDecl = ReadDeclAs<FunctionDecl>(*Loc.F, Record, Idx); |
| EPI.ExceptionSpecTemplate = ReadDeclAs<FunctionDecl>(*Loc.F, Record, Idx); |
| } else if (EST == EST_Unevaluated) { |
| EPI.ExceptionSpecDecl = ReadDeclAs<FunctionDecl>(*Loc.F, Record, Idx); |
| } |
| return Context.getFunctionType(ResultType, ParamTypes, EPI); |
| } |
| |
| case TYPE_UNRESOLVED_USING: { |
| unsigned Idx = 0; |
| return Context.getTypeDeclType( |
| ReadDeclAs<UnresolvedUsingTypenameDecl>(*Loc.F, Record, Idx)); |
| } |
| |
| case TYPE_TYPEDEF: { |
| if (Record.size() != 2) { |
| Error("incorrect encoding of typedef type"); |
| return QualType(); |
| } |
| unsigned Idx = 0; |
| TypedefNameDecl *Decl = ReadDeclAs<TypedefNameDecl>(*Loc.F, Record, Idx); |
| QualType Canonical = readType(*Loc.F, Record, Idx); |
| if (!Canonical.isNull()) |
| Canonical = Context.getCanonicalType(Canonical); |
| return Context.getTypedefType(Decl, Canonical); |
| } |
| |
| case TYPE_TYPEOF_EXPR: |
| return Context.getTypeOfExprType(ReadExpr(*Loc.F)); |
| |
| case TYPE_TYPEOF: { |
| if (Record.size() != 1) { |
| Error("incorrect encoding of typeof(type) in AST file"); |
| return QualType(); |
| } |
| QualType UnderlyingType = readType(*Loc.F, Record, Idx); |
| return Context.getTypeOfType(UnderlyingType); |
| } |
| |
| case TYPE_DECLTYPE: { |
| QualType UnderlyingType = readType(*Loc.F, Record, Idx); |
| return Context.getDecltypeType(ReadExpr(*Loc.F), UnderlyingType); |
| } |
| |
| case TYPE_UNARY_TRANSFORM: { |
| QualType BaseType = readType(*Loc.F, Record, Idx); |
| QualType UnderlyingType = readType(*Loc.F, Record, Idx); |
| UnaryTransformType::UTTKind UKind = (UnaryTransformType::UTTKind)Record[2]; |
| return Context.getUnaryTransformType(BaseType, UnderlyingType, UKind); |
| } |
| |
| case TYPE_AUTO: { |
| QualType Deduced = readType(*Loc.F, Record, Idx); |
| bool IsDecltypeAuto = Record[Idx++]; |
| bool IsDependent = Deduced.isNull() ? Record[Idx++] : false; |
| return Context.getAutoType(Deduced, IsDecltypeAuto, IsDependent); |
| } |
| |
| case TYPE_RECORD: { |
| if (Record.size() != 2) { |
| Error("incorrect encoding of record type"); |
| return QualType(); |
| } |
| unsigned Idx = 0; |
| bool IsDependent = Record[Idx++]; |
| RecordDecl *RD = ReadDeclAs<RecordDecl>(*Loc.F, Record, Idx); |
| RD = cast_or_null<RecordDecl>(RD->getCanonicalDecl()); |
| QualType T = Context.getRecordType(RD); |
| const_cast<Type*>(T.getTypePtr())->setDependent(IsDependent); |
| return T; |
| } |
| |
| case TYPE_ENUM: { |
| if (Record.size() != 2) { |
| Error("incorrect encoding of enum type"); |
| return QualType(); |
| } |
| unsigned Idx = 0; |
| bool IsDependent = Record[Idx++]; |
| QualType T |
| = Context.getEnumType(ReadDeclAs<EnumDecl>(*Loc.F, Record, Idx)); |
| const_cast<Type*>(T.getTypePtr())->setDependent(IsDependent); |
| return T; |
| } |
| |
| case TYPE_ATTRIBUTED: { |
| if (Record.size() != 3) { |
| Error("incorrect encoding of attributed type"); |
| return QualType(); |
| } |
| QualType modifiedType = readType(*Loc.F, Record, Idx); |
| QualType equivalentType = readType(*Loc.F, Record, Idx); |
| AttributedType::Kind kind = static_cast<AttributedType::Kind>(Record[2]); |
| return Context.getAttributedType(kind, modifiedType, equivalentType); |
| } |
| |
| case TYPE_PAREN: { |
| if (Record.size() != 1) { |
| Error("incorrect encoding of paren type"); |
| return QualType(); |
| } |
| QualType InnerType = readType(*Loc.F, Record, Idx); |
| return Context.getParenType(InnerType); |
| } |
| |
| case TYPE_PACK_EXPANSION: { |
| if (Record.size() != 2) { |
| Error("incorrect encoding of pack expansion type"); |
| return QualType(); |
| } |
| QualType Pattern = readType(*Loc.F, Record, Idx); |
| if (Pattern.isNull()) |
| return QualType(); |
| Optional<unsigned> NumExpansions; |
| if (Record[1]) |
| NumExpansions = Record[1] - 1; |
| return Context.getPackExpansionType(Pattern, NumExpansions); |
| } |
| |
| case TYPE_ELABORATED: { |
| unsigned Idx = 0; |
| ElaboratedTypeKeyword Keyword = (ElaboratedTypeKeyword)Record[Idx++]; |
| NestedNameSpecifier *NNS = ReadNestedNameSpecifier(*Loc.F, Record, Idx); |
| QualType NamedType = readType(*Loc.F, Record, Idx); |
| return Context.getElaboratedType(Keyword, NNS, NamedType); |
| } |
| |
| case TYPE_OBJC_INTERFACE: { |
| unsigned Idx = 0; |
| ObjCInterfaceDecl *ItfD |
| = ReadDeclAs<ObjCInterfaceDecl>(*Loc.F, Record, Idx); |
| return Context.getObjCInterfaceType(ItfD->getCanonicalDecl()); |
| } |
| |
| case TYPE_OBJC_OBJECT: { |
| unsigned Idx = 0; |
| QualType Base = readType(*Loc.F, Record, Idx); |
| unsigned NumProtos = Record[Idx++]; |
| SmallVector<ObjCProtocolDecl*, 4> Protos; |
| for (unsigned I = 0; I != NumProtos; ++I) |
| Protos.push_back(ReadDeclAs<ObjCProtocolDecl>(*Loc.F, Record, Idx)); |
| return Context.getObjCObjectType(Base, Protos.data(), NumProtos); |
| } |
| |
| case TYPE_OBJC_OBJECT_POINTER: { |
| unsigned Idx = 0; |
| QualType Pointee = readType(*Loc.F, Record, Idx); |
| return Context.getObjCObjectPointerType(Pointee); |
| } |
| |
| case TYPE_SUBST_TEMPLATE_TYPE_PARM: { |
| unsigned Idx = 0; |
| QualType Parm = readType(*Loc.F, Record, Idx); |
| QualType Replacement = readType(*Loc.F, Record, Idx); |
| return |
| Context.getSubstTemplateTypeParmType(cast<TemplateTypeParmType>(Parm), |
| Replacement); |
| } |
| |
| case TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK: { |
| unsigned Idx = 0; |
| QualType Parm = readType(*Loc.F, Record, Idx); |
| TemplateArgument ArgPack = ReadTemplateArgument(*Loc.F, Record, Idx); |
| return Context.getSubstTemplateTypeParmPackType( |
| cast<TemplateTypeParmType>(Parm), |
| ArgPack); |
| } |
| |
| case TYPE_INJECTED_CLASS_NAME: { |
| CXXRecordDecl *D = ReadDeclAs<CXXRecordDecl>(*Loc.F, Record, Idx); |
| QualType TST = readType(*Loc.F, Record, Idx); // probably derivable |
| // FIXME: ASTContext::getInjectedClassNameType is not currently suitable |
| // for AST reading, too much interdependencies. |
| return |
| QualType(new (Context, TypeAlignment) InjectedClassNameType(D, TST), 0); |
| } |
| |
| case TYPE_TEMPLATE_TYPE_PARM: { |
| unsigned Idx = 0; |
| unsigned Depth = Record[Idx++]; |
| unsigned Index = Record[Idx++]; |
| bool Pack = Record[Idx++]; |
| TemplateTypeParmDecl *D |
| = ReadDeclAs<TemplateTypeParmDecl>(*Loc.F, Record, Idx); |
| return Context.getTemplateTypeParmType(Depth, Index, Pack, D); |
| } |
| |
| case TYPE_DEPENDENT_NAME: { |
| unsigned Idx = 0; |
| ElaboratedTypeKeyword Keyword = (ElaboratedTypeKeyword)Record[Idx++]; |
| NestedNameSpecifier *NNS = ReadNestedNameSpecifier(*Loc.F, Record, Idx); |
| const IdentifierInfo *Name = this->GetIdentifierInfo(*Loc.F, Record, Idx); |
| QualType Canon = readType(*Loc.F, Record, Idx); |
| if (!Canon.isNull()) |
| Canon = Context.getCanonicalType(Canon); |
| return Context.getDependentNameType(Keyword, NNS, Name, Canon); |
| } |
| |
| case TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION: { |
| unsigned Idx = 0; |
| ElaboratedTypeKeyword Keyword = (ElaboratedTypeKeyword)Record[Idx++]; |
| NestedNameSpecifier *NNS = ReadNestedNameSpecifier(*Loc.F, Record, Idx); |
| const IdentifierInfo *Name = this->GetIdentifierInfo(*Loc.F, Record, Idx); |
| unsigned NumArgs = Record[Idx++]; |
| SmallVector<TemplateArgument, 8> Args; |
| Args.reserve(NumArgs); |
| while (NumArgs--) |
| Args.push_back(ReadTemplateArgument(*Loc.F, Record, Idx)); |
| return Context.getDependentTemplateSpecializationType(Keyword, NNS, Name, |
| Args.size(), Args.data()); |
| } |
| |
| case TYPE_DEPENDENT_SIZED_ARRAY: { |
| unsigned Idx = 0; |
| |
| // ArrayType |
| QualType ElementType = readType(*Loc.F, Record, Idx); |
| ArrayType::ArraySizeModifier ASM |
| = (ArrayType::ArraySizeModifier)Record[Idx++]; |
| unsigned IndexTypeQuals = Record[Idx++]; |
| |
| // DependentSizedArrayType |
| Expr *NumElts = ReadExpr(*Loc.F); |
| SourceRange Brackets = ReadSourceRange(*Loc.F, Record, Idx); |
| |
| return Context.getDependentSizedArrayType(ElementType, NumElts, ASM, |
| IndexTypeQuals, Brackets); |
| } |
| |
| case TYPE_TEMPLATE_SPECIALIZATION: { |
| unsigned Idx = 0; |
| bool IsDependent = Record[Idx++]; |
| TemplateName Name = ReadTemplateName(*Loc.F, Record, Idx); |
| SmallVector<TemplateArgument, 8> Args; |
| ReadTemplateArgumentList(Args, *Loc.F, Record, Idx); |
| QualType Underlying = readType(*Loc.F, Record, Idx); |
| QualType T; |
| if (Underlying.isNull()) |
| T = Context.getCanonicalTemplateSpecializationType(Name, Args.data(), |
| Args.size()); |
| else |
| T = Context.getTemplateSpecializationType(Name, Args.data(), |
| Args.size(), Underlying); |
| const_cast<Type*>(T.getTypePtr())->setDependent(IsDependent); |
| return T; |
| } |
| |
| case TYPE_ATOMIC: { |
| if (Record.size() != 1) { |
| Error("Incorrect encoding of atomic type"); |
| return QualType(); |
| } |
| QualType ValueType = readType(*Loc.F, Record, Idx); |
| return Context.getAtomicType(ValueType); |
| } |
| } |
| llvm_unreachable("Invalid TypeCode!"); |
| } |
| |
| class clang::TypeLocReader : public TypeLocVisitor<TypeLocReader> { |
| ASTReader &Reader; |
| ModuleFile &F; |
| const ASTReader::RecordData &Record; |
| unsigned &Idx; |
| |
| SourceLocation ReadSourceLocation(const ASTReader::RecordData &R, |
| unsigned &I) { |
| return Reader.ReadSourceLocation(F, R, I); |
| } |
| |
| template<typename T> |
| T *ReadDeclAs(const ASTReader::RecordData &Record, unsigned &Idx) { |
| return Reader.ReadDeclAs<T>(F, Record, Idx); |
| } |
| |
| public: |
| TypeLocReader(ASTReader &Reader, ModuleFile &F, |
| const ASTReader::RecordData &Record, unsigned &Idx) |
| : Reader(Reader), F(F), Record(Record), Idx(Idx) |
| { } |
| |
| // We want compile-time assurance that we've enumerated all of |
| // these, so unfortunately we have to declare them first, then |
| // define them out-of-line. |
| #define ABSTRACT_TYPELOC(CLASS, PARENT) |
| #define TYPELOC(CLASS, PARENT) \ |
| void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc); |
| #include "clang/AST/TypeLocNodes.def" |
| |
| void VisitFunctionTypeLoc(FunctionTypeLoc); |
| void VisitArrayTypeLoc(ArrayTypeLoc); |
| }; |
| |
| void TypeLocReader::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { |
| // nothing to do |
| } |
| void TypeLocReader::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { |
| TL.setBuiltinLoc(ReadSourceLocation(Record, Idx)); |
| if (TL.needsExtraLocalData()) { |
| TL.setWrittenTypeSpec(static_cast<DeclSpec::TST>(Record[Idx++])); |
| TL.setWrittenSignSpec(static_cast<DeclSpec::TSS>(Record[Idx++])); |
| TL.setWrittenWidthSpec(static_cast<DeclSpec::TSW>(Record[Idx++])); |
| TL.setModeAttr(Record[Idx++]); |
| } |
| } |
| void TypeLocReader::VisitComplexTypeLoc(ComplexTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitPointerTypeLoc(PointerTypeLoc TL) { |
| TL.setStarLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { |
| TL.setCaretLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { |
| TL.setAmpLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { |
| TL.setAmpAmpLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { |
| TL.setStarLoc(ReadSourceLocation(Record, Idx)); |
| TL.setClassTInfo(Reader.GetTypeSourceInfo(F, Record, Idx)); |
| } |
| void TypeLocReader::VisitArrayTypeLoc(ArrayTypeLoc TL) { |
| TL.setLBracketLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRBracketLoc(ReadSourceLocation(Record, Idx)); |
| if (Record[Idx++]) |
| TL.setSizeExpr(Reader.ReadExpr(F)); |
| else |
| TL.setSizeExpr(0); |
| } |
| void TypeLocReader::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) { |
| VisitArrayTypeLoc(TL); |
| } |
| void TypeLocReader::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) { |
| VisitArrayTypeLoc(TL); |
| } |
| void TypeLocReader::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) { |
| VisitArrayTypeLoc(TL); |
| } |
| void TypeLocReader::VisitDependentSizedArrayTypeLoc( |
| DependentSizedArrayTypeLoc TL) { |
| VisitArrayTypeLoc(TL); |
| } |
| void TypeLocReader::VisitDependentSizedExtVectorTypeLoc( |
| DependentSizedExtVectorTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitVectorTypeLoc(VectorTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitFunctionTypeLoc(FunctionTypeLoc TL) { |
| TL.setLocalRangeBegin(ReadSourceLocation(Record, Idx)); |
| TL.setLParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLocalRangeEnd(ReadSourceLocation(Record, Idx)); |
| for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) { |
| TL.setArg(i, ReadDeclAs<ParmVarDecl>(Record, Idx)); |
| } |
| } |
| void TypeLocReader::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) { |
| VisitFunctionTypeLoc(TL); |
| } |
| void TypeLocReader::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) { |
| VisitFunctionTypeLoc(TL); |
| } |
| void TypeLocReader::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitTypedefTypeLoc(TypedefTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { |
| TL.setTypeofLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRParenLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { |
| TL.setTypeofLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setUnderlyingTInfo(Reader.GetTypeSourceInfo(F, Record, Idx)); |
| } |
| void TypeLocReader::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) { |
| TL.setKWLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setUnderlyingTInfo(Reader.GetTypeSourceInfo(F, Record, Idx)); |
| } |
| void TypeLocReader::VisitAutoTypeLoc(AutoTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitRecordTypeLoc(RecordTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitEnumTypeLoc(EnumTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitAttributedTypeLoc(AttributedTypeLoc TL) { |
| TL.setAttrNameLoc(ReadSourceLocation(Record, Idx)); |
| if (TL.hasAttrOperand()) { |
| SourceRange range; |
| range.setBegin(ReadSourceLocation(Record, Idx)); |
| range.setEnd(ReadSourceLocation(Record, Idx)); |
| TL.setAttrOperandParensRange(range); |
| } |
| if (TL.hasAttrExprOperand()) { |
| if (Record[Idx++]) |
| TL.setAttrExprOperand(Reader.ReadExpr(F)); |
| else |
| TL.setAttrExprOperand(0); |
| } else if (TL.hasAttrEnumOperand()) |
| TL.setAttrEnumOperandLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitSubstTemplateTypeParmTypeLoc( |
| SubstTemplateTypeParmTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitSubstTemplateTypeParmPackTypeLoc( |
| SubstTemplateTypeParmPackTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitTemplateSpecializationTypeLoc( |
| TemplateSpecializationTypeLoc TL) { |
| TL.setTemplateKeywordLoc(ReadSourceLocation(Record, Idx)); |
| TL.setTemplateNameLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLAngleLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRAngleLoc(ReadSourceLocation(Record, Idx)); |
| for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) |
| TL.setArgLocInfo(i, |
| Reader.GetTemplateArgumentLocInfo(F, |
| TL.getTypePtr()->getArg(i).getKind(), |
| Record, Idx)); |
| } |
| void TypeLocReader::VisitParenTypeLoc(ParenTypeLoc TL) { |
| TL.setLParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRParenLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { |
| TL.setElaboratedKeywordLoc(ReadSourceLocation(Record, Idx)); |
| TL.setQualifierLoc(Reader.ReadNestedNameSpecifierLoc(F, Record, Idx)); |
| } |
| void TypeLocReader::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { |
| TL.setElaboratedKeywordLoc(ReadSourceLocation(Record, Idx)); |
| TL.setQualifierLoc(Reader.ReadNestedNameSpecifierLoc(F, Record, Idx)); |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitDependentTemplateSpecializationTypeLoc( |
| DependentTemplateSpecializationTypeLoc TL) { |
| TL.setElaboratedKeywordLoc(ReadSourceLocation(Record, Idx)); |
| TL.setQualifierLoc(Reader.ReadNestedNameSpecifierLoc(F, Record, Idx)); |
| TL.setTemplateKeywordLoc(ReadSourceLocation(Record, Idx)); |
| TL.setTemplateNameLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLAngleLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRAngleLoc(ReadSourceLocation(Record, Idx)); |
| for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) |
| TL.setArgLocInfo(I, |
| Reader.GetTemplateArgumentLocInfo(F, |
| TL.getTypePtr()->getArg(I).getKind(), |
| Record, Idx)); |
| } |
| void TypeLocReader::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) { |
| TL.setEllipsisLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { |
| TL.setNameLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { |
| TL.setHasBaseTypeAsWritten(Record[Idx++]); |
| TL.setLAngleLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRAngleLoc(ReadSourceLocation(Record, Idx)); |
| for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i) |
| TL.setProtocolLoc(i, ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { |
| TL.setStarLoc(ReadSourceLocation(Record, Idx)); |
| } |
| void TypeLocReader::VisitAtomicTypeLoc(AtomicTypeLoc TL) { |
| TL.setKWLoc(ReadSourceLocation(Record, Idx)); |
| TL.setLParenLoc(ReadSourceLocation(Record, Idx)); |
| TL.setRParenLoc(ReadSourceLocation(Record, Idx)); |
| } |
| |
| TypeSourceInfo *ASTReader::GetTypeSourceInfo(ModuleFile &F, |
| const RecordData &Record, |
| unsigned &Idx) { |
| QualType InfoTy = readType(F, Record, Idx); |
| if (InfoTy.isNull()) |
| return 0; |
| |
| TypeSourceInfo *TInfo = getContext().CreateTypeSourceInfo(InfoTy); |
| TypeLocReader TLR(*this, F, Record, Idx); |
| for (TypeLoc TL = TInfo->getTypeLoc(); !TL.isNull(); TL = TL.getNextTypeLoc()) |
| TLR.Visit(TL); |
| return TInfo; |
| } |
| |
| QualType ASTReader::GetType(TypeID ID) { |
| unsigned FastQuals = ID & Qualifiers::FastMask; |
| unsigned Index = ID >> Qualifiers::FastWidth; |
| |
| if (Index < NUM_PREDEF_TYPE_IDS) { |
| QualType T; |
| switch ((PredefinedTypeIDs)Index) { |
| case PREDEF_TYPE_NULL_ID: return QualType(); |
| case PREDEF_TYPE_VOID_ID: T = Context.VoidTy; break; |
| case PREDEF_TYPE_BOOL_ID: T = Context.BoolTy; break; |
| |
| case PREDEF_TYPE_CHAR_U_ID: |
| case PREDEF_TYPE_CHAR_S_ID: |
| // FIXME: Check that the signedness of CharTy is correct! |
| T = Context.CharTy; |
| break; |
| |
| case PREDEF_TYPE_UCHAR_ID: T = Context.UnsignedCharTy; break; |
| case PREDEF_TYPE_USHORT_ID: T = Context.UnsignedShortTy; break; |
| case PREDEF_TYPE_UINT_ID: T = Context.UnsignedIntTy; break; |
| case PREDEF_TYPE_ULONG_ID: T = Context.UnsignedLongTy; break; |
| case PREDEF_TYPE_ULONGLONG_ID: T = Context.UnsignedLongLongTy; break; |
| case PREDEF_TYPE_UINT128_ID: T = Context.UnsignedInt128Ty; break; |
| case PREDEF_TYPE_SCHAR_ID: T = Context.SignedCharTy; break; |
| case PREDEF_TYPE_WCHAR_ID: T = Context.WCharTy; break; |
| case PREDEF_TYPE_SHORT_ID: T = Context.ShortTy; break; |
| case PREDEF_TYPE_INT_ID: T = Context.IntTy; break; |
| case PREDEF_TYPE_LONG_ID: T = Context.LongTy; break; |
| case PREDEF_TYPE_LONGLONG_ID: T = Context.LongLongTy; break; |
| case PREDEF_TYPE_INT128_ID: T = Context.Int128Ty; break; |
| case PREDEF_TYPE_HALF_ID: T = Context.HalfTy; break; |
| case PREDEF_TYPE_FLOAT_ID: T = Context.FloatTy; break; |
| case PREDEF_TYPE_DOUBLE_ID: T = Context.DoubleTy; break; |
| case PREDEF_TYPE_LONGDOUBLE_ID: T = Context.LongDoubleTy; break; |
| case PREDEF_TYPE_OVERLOAD_ID: T = Context.OverloadTy; break; |
| case PREDEF_TYPE_BOUND_MEMBER: T = Context.BoundMemberTy; break; |
| case PREDEF_TYPE_PSEUDO_OBJECT: T = Context.PseudoObjectTy; break; |
| case PREDEF_TYPE_DEPENDENT_ID: T = Context.DependentTy; break; |
| case PREDEF_TYPE_UNKNOWN_ANY: T = Context.UnknownAnyTy; break; |
| case PREDEF_TYPE_NULLPTR_ID: T = Context.NullPtrTy; break; |
| case PREDEF_TYPE_CHAR16_ID: T = Context.Char16Ty; break; |
| case PREDEF_TYPE_CHAR32_ID: T = Context.Char32Ty; break; |
| case PREDEF_TYPE_OBJC_ID: T = Context.ObjCBuiltinIdTy; break; |
| case PREDEF_TYPE_OBJC_CLASS: T = Context.ObjCBuiltinClassTy; break; |
| case PREDEF_TYPE_OBJC_SEL: T = Context.ObjCBuiltinSelTy; break; |
| case PREDEF_TYPE_IMAGE1D_ID: T = Context.OCLImage1dTy; break; |
| case PREDEF_TYPE_IMAGE1D_ARR_ID: T = Context.OCLImage1dArrayTy; break; |
| case PREDEF_TYPE_IMAGE1D_BUFF_ID: T = Context.OCLImage1dBufferTy; break; |
| case PREDEF_TYPE_IMAGE2D_ID: T = Context.OCLImage2dTy; break; |
| case PREDEF_TYPE_IMAGE2D_ARR_ID: T = Context.OCLImage2dArrayTy; break; |
| case PREDEF_TYPE_IMAGE3D_ID: T = Context.OCLImage3dTy; break; |
| case PREDEF_TYPE_SAMPLER_ID: T = Context.OCLSamplerTy; break; |
| case PREDEF_TYPE_EVENT_ID: T = Context.OCLEventTy; break; |
| case PREDEF_TYPE_AUTO_DEDUCT: T = Context.getAutoDeductType(); break; |
| |
| case PREDEF_TYPE_AUTO_RREF_DEDUCT: |
| T = Context.getAutoRRefDeductType(); |
| break; |
| |
| case PREDEF_TYPE_ARC_UNBRIDGED_CAST: |
| T = Context.ARCUnbridgedCastTy; |
| break; |
| |
| case PREDEF_TYPE_VA_LIST_TAG: |
| T = Context.getVaListTagType(); |
| break; |
| |
| case PREDEF_TYPE_BUILTIN_FN: |
| T = Context.BuiltinFnTy; |
| break; |
| } |
| |
| assert(!T.isNull() && "Unknown predefined type"); |
| return T.withFastQualifiers(FastQuals); |
| } |
| |
| Index -= NUM_PREDEF_TYPE_IDS; |
| assert(Index < TypesLoaded.size() && "Type index out-of-range"); |
| if (TypesLoaded[Index].isNull()) { |
| TypesLoaded[Index] = readTypeRecord(Index); |
| if (TypesLoaded[Index].isNull()) |
| return QualType(); |
| |
| TypesLoaded[Index]->setFromAST(); |
| if (DeserializationListener) |
| DeserializationListener->TypeRead(TypeIdx::fromTypeID(ID), |
| TypesLoaded[Index]); |
| } |
| |
| return TypesLoaded[Index].withFastQualifiers(FastQuals); |
| } |
| |
| QualType ASTReader::getLocalType(ModuleFile &F, unsigned LocalID) { |
| return GetType(getGlobalTypeID(F, LocalID)); |
| } |
| |
| serialization::TypeID |
| ASTReader::getGlobalTypeID(ModuleFile &F, unsigned LocalID) const { |
| unsigned FastQuals = LocalID & Qualifiers::FastMask; |
| unsigned LocalIndex = LocalID >> Qualifiers::FastWidth; |
| |
| if (LocalIndex < NUM_PREDEF_TYPE_IDS) |
| return LocalID; |
| |
| ContinuousRangeMap<uint32_t, int, 2>::iterator I |
| = F.TypeRemap.find(LocalIndex - NUM_PREDEF_TYPE_IDS); |
| assert(I != F.TypeRemap.end() && "Invalid index into type index remap"); |
| |
| unsigned GlobalIndex = LocalIndex + I->second; |
| return (GlobalIndex << Qualifiers::FastWidth) | FastQuals; |
| } |
| |
| TemplateArgumentLocInfo |
| ASTReader::GetTemplateArgumentLocInfo(ModuleFile &F, |
| TemplateArgument::ArgKind Kind, |
| const RecordData &Record, |
| unsigned &Index) { |
| switch (Kind) { |
| case TemplateArgument::Expression: |
| return ReadExpr(F); |
| case TemplateArgument::Type: |
| return GetTypeSourceInfo(F, Record, Index); |
| case TemplateArgument::Template: { |
| NestedNameSpecifierLoc QualifierLoc = ReadNestedNameSpecifierLoc(F, Record, |
| Index); |
| SourceLocation TemplateNameLoc = ReadSourceLocation(F, Record, Index); |
| return TemplateArgumentLocInfo(QualifierLoc, TemplateNameLoc, |
| SourceLocation()); |
| } |
| case TemplateArgument::TemplateExpansion: { |
| NestedNameSpecifierLoc QualifierLoc = ReadNestedNameSpecifierLoc(F, Record, |
| Index); |
| SourceLocation TemplateNameLoc = ReadSourceLocation(F, Record, Index); |
| SourceLocation EllipsisLoc = ReadSourceLocation(F, Record, Index); |
| return TemplateArgumentLocInfo(QualifierLoc, TemplateNameLoc, |
| EllipsisLoc); |
| } |
| case TemplateArgument::Null: |
| case TemplateArgument::Integral: |
| case TemplateArgument::Declaration: |
| case TemplateArgument::NullPtr: |
| case TemplateArgument::Pack: |
| // FIXME: Is this right? |
| return TemplateArgumentLocInfo(); |
| } |
| llvm_unreachable("unexpected template argument loc"); |
| } |
| |
| TemplateArgumentLoc |
| ASTReader::ReadTemplateArgumentLoc(ModuleFile &F, |
| const RecordData &Record, unsigned &Index) { |
| TemplateArgument Arg = ReadTemplateArgument(F, Record, Index); |
| |
| if (Arg.getKind() == TemplateArgument::Expression) { |
| if (Record[Index++]) // bool InfoHasSameExpr. |
| return TemplateArgumentLoc(Arg, TemplateArgumentLocInfo(Arg.getAsExpr())); |
| } |
| return TemplateArgumentLoc(Arg, GetTemplateArgumentLocInfo(F, Arg.getKind(), |
| Record, Index)); |
| } |
| |
| Decl *ASTReader::GetExternalDecl(uint32_t ID) { |
| return GetDecl(ID); |
| } |
| |
| uint64_t ASTReader::readCXXBaseSpecifiers(ModuleFile &M, const RecordData &Record, |
| unsigned &Idx){ |
| if (Idx >= Record.size()) |
| return 0; |
| |
| unsigned LocalID = Record[Idx++]; |
| return getGlobalBitOffset(M, M.CXXBaseSpecifiersOffsets[LocalID - 1]); |
| } |
| |
| CXXBaseSpecifier *ASTReader::GetExternalCXXBaseSpecifiers(uint64_t Offset) { |
| RecordLocation Loc = getLocalBitOffset(Offset); |
| BitstreamCursor &Cursor = Loc.F->DeclsCursor; |
| SavedStreamPosition SavedPosition(Cursor); |
| Cursor.JumpToBit(Loc.Offset); |
| ReadingKindTracker ReadingKind(Read_Decl, *this); |
| RecordData Record; |
| unsigned Code = Cursor.ReadCode(); |
| unsigned RecCode = Cursor.readRecord(Code, Record); |
| if (RecCode != DECL_CXX_BASE_SPECIFIERS) { |
| Error("Malformed AST file: missing C++ base specifiers"); |
| return 0; |
| } |
| |
| unsigned Idx = 0; |
| unsigned NumBases = Record[Idx++]; |
| void *Mem = Context.Allocate(sizeof(CXXBaseSpecifier) * NumBases); |
| CXXBaseSpecifier *Bases = new (Mem) CXXBaseSpecifier [NumBases]; |
| for (unsigned I = 0; I != NumBases; ++I) |
| Bases[I] = ReadCXXBaseSpecifier(*Loc.F, Record, Idx); |
| return Bases; |
| } |
| |
| serialization::DeclID |
| ASTReader::getGlobalDeclID(ModuleFile &F, LocalDeclID LocalID) const { |
| if (LocalID < NUM_PREDEF_DECL_IDS) |
| return LocalID; |
| |
| ContinuousRangeMap<uint32_t, int, 2>::iterator I |
| = F.DeclRemap.find(LocalID - NUM_PREDEF_DECL_IDS); |
| assert(I != F.DeclRemap.end() && "Invalid index into decl index remap"); |
| |
| return LocalID + I->second; |
| } |
| |
| bool ASTReader::isDeclIDFromModule(serialization::GlobalDeclID ID, |
| ModuleFile &M) const { |
| GlobalDeclMapType::const_iterator I = GlobalDeclMap.find(ID); |
| assert(I != GlobalDeclMap.end() && "Corrupted global declaration map"); |
| return &M == I->second; |
| } |
| |
| ModuleFile *ASTReader::getOwningModuleFile(const Decl *D) { |
| if (!D->isFromASTFile()) |
| return 0; |
| GlobalDeclMapType::const_iterator I = GlobalDeclMap.find(D->getGlobalID()); |
| assert(I != GlobalDeclMap.end() && "Corrupted global declaration map"); |
| return I->second; |
| } |
| |
| SourceLocation ASTReader::getSourceLocationForDeclID(GlobalDeclID ID) { |
| if (ID < NUM_PREDEF_DECL_IDS) |
| return SourceLocation(); |
| |
| unsigned Index = ID - NUM_PREDEF_DECL_IDS; |
| |
| if (Index > DeclsLoaded.size()) { |
| Error("declaration ID out-of-range for AST file"); |
| return SourceLocation(); |
| } |
| |
| if (Decl *D = DeclsLoaded[Index]) |
| return D->getLocation(); |
| |
| unsigned RawLocation = 0; |
| RecordLocation Rec = DeclCursorForID(ID, RawLocation); |
| return ReadSourceLocation(*Rec.F, RawLocation); |
| } |
| |
| Decl *ASTReader::GetDecl(DeclID ID) { |
| if (ID < NUM_PREDEF_DECL_IDS) { |
| switch ((PredefinedDeclIDs)ID) { |
| case PREDEF_DECL_NULL_ID: |
| return 0; |
| |
| case PREDEF_DECL_TRANSLATION_UNIT_ID: |
| return Context.getTranslationUnitDecl(); |
| |
| case PREDEF_DECL_OBJC_ID_ID: |
| return Context.getObjCIdDecl(); |
| |
| case PREDEF_DECL_OBJC_SEL_ID: |
| return Context.getObjCSelDecl(); |
| |
| case PREDEF_DECL_OBJC_CLASS_ID: |
| return Context.getObjCClassDecl(); |
| |
| case PREDEF_DECL_OBJC_PROTOCOL_ID: |
| return Context.getObjCProtocolDecl(); |
| |
| case PREDEF_DECL_INT_128_ID: |
| return Context.getInt128Decl(); |
| |
| case PREDEF_DECL_UNSIGNED_INT_128_ID: |
| return Context.getUInt128Decl(); |
| |
| case PREDEF_DECL_OBJC_INSTANCETYPE_ID: |
| return Context.getObjCInstanceTypeDecl(); |
| |
| case PREDEF_DECL_BUILTIN_VA_LIST_ID: |
| return Context.getBuiltinVaListDecl(); |
| } |
| } |
| |
| unsigned Index = ID - NUM_PREDEF_DECL_IDS; |
| |
| if (Index >= DeclsLoaded.size()) { |
| assert(0 && "declaration ID out-of-range for AST file"); |
| Error("declaration ID out-of-range for AST file"); |
| return 0; |
| } |
| |
| if (!DeclsLoaded[Index]) { |
| ReadDeclRecord(ID); |
| if (DeserializationListener) |
| DeserializationListener->DeclRead(ID, DeclsLoaded[Index]); |
| } |
| |
| return DeclsLoaded[Index]; |
| } |
| |
| DeclID ASTReader::mapGlobalIDToModuleFileGlobalID(ModuleFile &M, |
| DeclID GlobalID) { |
| if (GlobalID < NUM_PREDEF_DECL_IDS) |
| return GlobalID; |
| |
| GlobalDeclMapType::const_iterator I = GlobalDeclMap.find(GlobalID); |
| assert(I != GlobalDeclMap.end() && "Corrupted global declaration map"); |
| ModuleFile *Owner = I->second; |
| |
| llvm::DenseMap<ModuleFile *, serialization::DeclID>::iterator Pos |
| = M.GlobalToLocalDeclIDs.find(Owner); |
| if (Pos == M.GlobalToLocalDeclIDs.end()) |
| return 0; |
| |
| return GlobalID - Owner->BaseDeclID + Pos->second; |
| } |
| |
| serialization::DeclID ASTReader::ReadDeclID(ModuleFile &F, |
| const RecordData &Record, |
| unsigned &Idx) { |
| if (Idx >= Record.size()) { |
| Error("Corrupted AST file"); |
| return 0; |
| } |
| |
| return getGlobalDeclID(F, Record[Idx++]); |
| } |
| |
| /// \brief Resolve the offset of a statement into a statement. |
| /// |
| /// This operation will read a new statement from the external |
| /// source each time it is called, and is meant to be used via a |
| /// LazyOffsetPtr (which is used by Decls for the body of functions, etc). |
| Stmt *ASTReader::GetExternalDeclStmt(uint64_t Offset) { |
| // Switch case IDs are per Decl. |
| ClearSwitchCaseIDs(); |
| |
| // Offset here is a global offset across the entire chain. |
| RecordLocation Loc = getLocalBitOffset(Offset); |
| Loc.F->DeclsCursor.JumpToBit(Loc.Offset); |
| return ReadStmtFromStream(*Loc.F); |
| } |
| |
| namespace { |
| class FindExternalLexicalDeclsVisitor { |
| ASTReader &Reader; |
| const DeclContext *DC; |
| bool (*isKindWeWant)(Decl::Kind); |
| |
| SmallVectorImpl<Decl*> &Decls; |
| bool PredefsVisited[NUM_PREDEF_DECL_IDS]; |
| |
| public: |
| FindExternalLexicalDeclsVisitor(ASTReader &Reader, const DeclContext *DC, |
| bool (*isKindWeWant)(Decl::Kind), |
| SmallVectorImpl<Decl*> &Decls) |
| : Reader(Reader), DC(DC), isKindWeWant(isKindWeWant), Decls(Decls) |
| { |
| for (unsigned I = 0; I != NUM_PREDEF_DECL_IDS; ++I) |
| PredefsVisited[I] = false; |
| } |
| |
| static bool visit(ModuleFile &M, bool Preorder, void *UserData) { |
| if (Preorder) |
| return false; |
| |
| FindExternalLexicalDeclsVisitor *This |
| = static_cast<FindExternalLexicalDeclsVisitor *>(UserData); |
| |
| ModuleFile::DeclContextInfosMap::iterator Info |
| = M.DeclContextInfos.find(This->DC); |
| if (Info == M.DeclContextInfos.end() || !Info->second.LexicalDecls) |
| return false; |
| |
| // Load all of the declaration IDs |
| for (const KindDeclIDPair *ID = Info->second.LexicalDecls, |
| *IDE = ID + Info->second.NumLexicalDecls; |
| ID != IDE; ++ID) { |
| if (This->isKindWeWant && !This->isKindWeWant((Decl::Kind)ID->first)) |
| continue; |
| |
| // Don't add predefined declarations to the lexical context more |
| // than once. |
| if (ID->second < NUM_PREDEF_DECL_IDS) { |
| if (This->PredefsVisited[ID->second]) |
| continue; |
| |
| This->PredefsVisited[ID->second] = true; |
| } |
| |
| if (Decl *D = This->Reader.GetLocalDecl(M, ID->second)) { |
| if (!This->DC->isDeclInLexicalTraversal(D)) |
| This->Decls.push_back(D); |
| } |
| } |
| |
| return false; |
| } |
| }; |
| } |
| |
| ExternalLoadResult ASTReader::FindExternalLexicalDecls(const DeclContext *DC, |
| bool (*isKindWeWant)(Decl::Kind), |
| SmallVectorImpl<Decl*> &Decls) { |
| // There might be lexical decls in multiple modules, for the TU at |
| // least. Walk all of the modules in the order they were loaded. |
| FindExternalLexicalDeclsVisitor Visitor(*this, DC, isKindWeWant, Decls); |
| ModuleMgr.visitDepthFirst(&FindExternalLexicalDeclsVisitor::visit, &Visitor); |
| ++NumLexicalDeclContextsRead; |
| return ELR_Success; |
| } |
| |
| namespace { |
| |
| class DeclIDComp { |
| ASTReader &Reader; |
| ModuleFile &Mod; |
| |
| public: |
| DeclIDComp(ASTReader &Reader, ModuleFile &M) : Reader(Reader), Mod(M) {} |
| |
| bool operator()(LocalDeclID L, LocalDeclID R) const { |
| SourceLocation LHS = getLocation(L); |
| SourceLocation RHS = getLocation(R); |
| return Reader.getSourceManager().isBeforeInTranslationUnit(LHS, RHS); |
| } |
| |
| bool operator()(SourceLocation LHS, LocalDeclID R) const { |
| SourceLocation RHS = getLocation(R); |
| return Reader.getSourceManager().isBeforeInTranslationUnit(LHS, RHS); |
| } |
| |
| bool operator()(LocalDeclID L, SourceLocation RHS) const { |
| SourceLocation LHS = getLocation(L); |
| return Reader.getSourceManager().isBeforeInTranslationUnit(LHS, RHS); |
| } |
| |
| SourceLocation getLocation(LocalDeclID ID) const { |
| return Reader.getSourceManager().getFileLoc( |
| Reader.getSourceLocationForDeclID(Reader.getGlobalDeclID(Mod, ID))); |
| } |
| }; |
| |
| } |
| |
| void ASTReader::FindFileRegionDecls(FileID File, |
| unsigned Offset, unsigned Length, |
| SmallVectorImpl<Decl *> &Decls) { |
| SourceManager &SM = getSourceManager(); |
| |
| llvm::DenseMap<FileID, FileDeclsInfo>::iterator I = FileDeclIDs.find(File); |
| if (I == FileDeclIDs.end()) |
| return; |
| |
| FileDeclsInfo &DInfo = I->second; |
| if (DInfo.Decls.empty()) |
| return; |
| |
| SourceLocation |
| BeginLoc = SM.getLocForStartOfFile(File).getLocWithOffset(Offset); |
| SourceLocation EndLoc = BeginLoc.getLocWithOffset(Length); |
| |
| DeclIDComp DIDComp(*this, *DInfo.Mod); |
| ArrayRef<serialization::LocalDeclID>::iterator |
| BeginIt = std::lower_bound(DInfo.Decls.begin(), DInfo.Decls.end(), |
| BeginLoc, DIDComp); |
| if (BeginIt != DInfo.Decls.begin()) |
| --BeginIt; |
| |
| // If we are pointing at a top-level decl inside an objc container, we need |
| // to backtrack until we find it otherwise we will fail to report that the |
| // region overlaps with an objc container. |
| while (BeginIt != DInfo.Decls.begin() && |
| GetDecl(getGlobalDeclID(*DInfo.Mod, *BeginIt)) |
| ->isTopLevelDeclInObjCContainer()) |
| --BeginIt; |
| |
| ArrayRef<serialization::LocalDeclID>::iterator |
| EndIt = std::upper_bound(DInfo.Decls.begin(), DInfo.Decls.end(), |
| EndLoc, DIDComp); |
| if (EndIt != DInfo.Decls.end()) |
| ++EndIt; |
| |
| for (ArrayRef<serialization::LocalDeclID>::iterator |
| DIt = BeginIt; DIt != EndIt; ++DIt) |
| Decls.push_back(GetDecl(getGlobalDeclID(*DInfo.Mod, *DIt))); |
| } |
| |
| namespace { |
| /// \brief ModuleFile visitor used to perform name lookup into a |
| /// declaration context. |
| class DeclContextNameLookupVisitor { |
| ASTReader &Reader; |
| SmallVectorImpl<const DeclContext *> &Contexts; |
| DeclarationName Name; |
| SmallVectorImpl<NamedDecl *> &Decls; |
| |
| public: |
| DeclContextNameLookupVisitor(ASTReader &Reader, |
| SmallVectorImpl<const DeclContext *> &Contexts, |
| DeclarationName Name, |
| SmallVectorImpl<NamedDecl *> &Decls) |
| : Reader(Reader), Contexts(Contexts), Name(Name), Decls(Decls) { } |
| |
| static bool visit(ModuleFile &M, void *UserData) { |
| DeclContextNameLookupVisitor *This |
| = static_cast<DeclContextNameLookupVisitor *>(UserData); |
| |
| // Check whether we have any visible declaration information for |
| // this context in this module. |
| ModuleFile::DeclContextInfosMap::iterator Info; |
| bool FoundInfo = false; |
| for (unsigned I = 0, N = This->Contexts.size(); I != N; ++I) { |
| Info = M.DeclContextInfos.find(This->Contexts[I]); |
| if (Info != M.DeclContextInfos.end() && |
| Info->second.NameLookupTableData) { |
| FoundInfo = true; |
| break; |
| } |
| } |
| |
| if (!FoundInfo) |
| return false; |
| |
| // Look for this name within this module. |
| ASTDeclContextNameLookupTable *LookupTable = |
| Info->second.NameLookupTableData; |
| ASTDeclContextNameLookupTable::iterator Pos |
| = LookupTable->find(This->Name); |
| if (Pos == LookupTable->end()) |
| return false; |
| |
| bool FoundAnything = false; |
| ASTDeclContextNameLookupTrait::data_type Data = *Pos; |
| for (; Data.first != Data.second; ++Data.first) { |
| NamedDecl *ND = This->Reader.GetLocalDeclAs<NamedDecl>(M, *Data.first); |
| if (!ND) |
| continue; |
| |
| if (ND->getDeclName() != This->Name) { |
| // A name might be null because the decl's redeclarable part is |
| // currently read before reading its name. The lookup is triggered by |
| // building that decl (likely indirectly), and so it is later in the |
| // sense of "already existing" and can be ignored here. |
| continue; |
| } |
| |
| // Record this declaration. |
| FoundAnything = true; |
| This->Decls.push_back(ND); |
| } |
| |
| return FoundAnything; |
| } |
| }; |
| } |
| |
| /// \brief Retrieve the "definitive" module file for the definition of the |
| /// given declaration context, if there is one. |
| /// |
| /// The "definitive" module file is the only place where we need to look to |
| /// find information about the declarations within the given declaration |
| /// context. For example, C++ and Objective-C classes, C structs/unions, and |
| /// Objective-C protocols, categories, and extensions are all defined in a |
| /// single place in the source code, so they have definitive module files |
| /// associated with them. C++ namespaces, on the other hand, can have |
| /// definitions in multiple different module files. |
| /// |
| /// Note: this needs to be kept in sync with ASTWriter::AddedVisibleDecl's |
| /// NDEBUG checking. |
| static ModuleFile *getDefinitiveModuleFileFor(const DeclContext *DC, |
| ASTReader &Reader) { |
| if (const DeclContext *DefDC = getDefinitiveDeclContext(DC)) |
| return Reader.getOwningModuleFile(cast<Decl>(DefDC)); |
| |
| return 0; |
| } |
| |
| bool |
| ASTReader::FindExternalVisibleDeclsByName(const DeclContext *DC, |
| DeclarationName Name) { |
| assert(DC->hasExternalVisibleStorage() && |
| "DeclContext has no visible decls in storage"); |
| if (!Name) |
| return false; |
| |
| SmallVector<NamedDecl *, 64> Decls; |
| |
| // Compute the declaration contexts we need to look into. Multiple such |
| // declaration contexts occur when two declaration contexts from disjoint |
| // modules get merged, e.g., when two namespaces with the same name are |
| // independently defined in separate modules. |
| SmallVector<const DeclContext *, 2> Contexts; |
| Contexts.push_back(DC); |
| |
| if (DC->isNamespace()) { |
| MergedDeclsMap::iterator Merged |
| = MergedDecls.find(const_cast<Decl *>(cast<Decl>(DC))); |
| if (Merged != MergedDecls.end()) { |
| for (unsigned I = 0, N = Merged->second.size(); I != N; ++I) |
| Contexts.push_back(cast<DeclContext>(GetDecl(Merged->second[I]))); |
| } |
| } |
| |
| DeclContextNameLookupVisitor Visitor(*this, Contexts, Name, Decls); |
| |
| // If we can definitively determine which module file to look into, |
| // only look there. Otherwise, look in all module files. |
| ModuleFile *Definitive; |
| if (Contexts.size() == 1 && |
| (Definitive = getDefinitiveModuleFileFor(DC, *this))) { |
| DeclContextNameLookupVisitor::visit(*Definitive, &Visitor); |
| } else { |
| ModuleMgr.visit(&DeclContextNameLookupVisitor::visit, &Visitor); |
| } |
| ++NumVisibleDeclContextsRead; |
| SetExternalVisibleDeclsForName(DC, Name, Decls); |
| return !Decls.empty(); |
| } |
| |
| namespace { |
| /// \brief ModuleFile visitor used to retrieve all visible names in a |
| /// declaration context. |
| class DeclContextAllNamesVisitor { |
| ASTReader &Reader; |
| SmallVectorImpl<const DeclContext *> &Contexts; |
| llvm::DenseMap<DeclarationName, SmallVector<NamedDecl *, 8> > &Decls; |
| bool VisitAll; |
| |
| public: |
| DeclContextAllNamesVisitor(ASTReader &Reader, |
| SmallVectorImpl<const DeclContext *> &Contexts, |
| llvm::DenseMap<DeclarationName, |
| SmallVector<NamedDecl *, 8> > &Decls, |
| bool VisitAll) |
| : Reader(Reader), Contexts(Contexts), Decls(Decls), VisitAll(VisitAll) { } |
| |
| static bool visit(ModuleFile &M, void *UserData) { |
| DeclContextAllNamesVisitor *This |
| = static_cast<DeclContextAllNamesVisitor *>(UserData); |
| |
| // Check whether we have any visible declaration information for |
| // this context in this module. |
| ModuleFile::DeclContextInfosMap::iterator Info; |
| bool FoundInfo = false; |
| for (unsigned I = 0, N = This->Contexts.size(); I != N; ++I) { |
| Info = M.DeclContextInfos.find(This->Contexts[I]); |
| if (Info != M.DeclContextInfos.end() && |
| Info->second.NameLookupTableData) { |
| FoundInfo = true; |
| break; |
| } |
| } |
| |
| if (!FoundInfo) |
| return false; |
| |
| ASTDeclContextNameLookupTable *LookupTable = |
| Info->second.NameLookupTableData; |
| bool FoundAnything = false; |
| for (ASTDeclContextNameLookupTable::data_iterator |
| I = LookupTable->data_begin(), E = LookupTable->data_end(); |
| I != E; |
| ++I) { |
| ASTDeclContextNameLookupTrait::data_type Data = *I; |
| for (; Data.first != Data.second; ++Data.first) { |
| NamedDecl *ND = This->Reader.GetLocalDeclAs<NamedDecl>(M, |
| *Data.first); |
| if (!ND) |
| continue; |
| |
| // Record this declaration. |
| FoundAnything = true; |
| This->Decls[ND->getDeclName()].push_back(ND); |
| } |
| } |
| |
| return FoundAnything && !This->VisitAll; |
| } |
| }; |
| } |
| |
| void ASTReader::completeVisibleDeclsMap(const DeclContext *DC) { |
| if (!DC->hasExternalVisibleStorage()) |
| return; |
| llvm::DenseMap<DeclarationName, SmallVector<NamedDecl *, 8> > Decls; |
| |
| // Compute the declaration contexts we need to look into. Multiple such |
| // declaration contexts occur when two declaration contexts from disjoint |
| // modules get merged, e.g., when two namespaces with the same name are |
| // independently defined in separate modules. |
| SmallVector<const DeclContext *, 2> Contexts; |
| Contexts.push_back(DC); |
| |
| if (DC->isNamespace()) { |
| MergedDeclsMap::iterator Merged |
| = MergedDecls.find(const_cast<Decl *>(cast<Decl>(DC))); |
| if (Merged != MergedDecls.end()) { |
| for (unsigned I = 0, N = Merged->second.size(); I != N; ++I) |
| Contexts.push_back(cast<DeclContext>(GetDecl(Merged->second[I]))); |
| } |
| } |
| |
| DeclContextAllNamesVisitor Visitor(*this, Contexts, Decls, |
| /*VisitAll=*/DC->isFileContext()); |
| ModuleMgr.visit(&DeclContextAllNamesVisitor::visit, &Visitor); |
| ++NumVisibleDeclContextsRead; |
| |
| for (llvm::DenseMap<DeclarationName, |
| SmallVector<NamedDecl *, 8> >::iterator |
| I = Decls.begin(), E = Decls.end(); I != E; ++I) { |
| SetExternalVisibleDeclsForName(DC, I->first, I->second); |
| } |
| const_cast<DeclContext *>(DC)->setHasExternalVisibleStorage(false); |
| } |
| |
| /// \brief Under non-PCH compilation the consumer receives the objc methods |
| /// before receiving the implementation, and codegen depends on this. |
| /// We simulate this by deserializing and passing to consumer the methods of the |
| /// implementation before passing the deserialized implementation decl. |
| static void PassObjCImplDeclToConsumer(ObjCImplDecl *ImplD, |
| ASTConsumer *Consumer) { |
| assert(ImplD && Consumer); |
| |
| for (ObjCImplDecl::method_iterator |
| I = ImplD->meth_begin(), E = ImplD->meth_end(); I != E; ++I) |
| Consumer->HandleInterestingDecl(DeclGroupRef(*I)); |
| |
| Consumer->HandleInterestingDecl(DeclGroupRef(ImplD)); |
| } |
| |
| void ASTReader::PassInterestingDeclsToConsumer() { |
| assert(Consumer); |
| while (!InterestingDecls.empty()) { |
| Decl *D = InterestingDecls.front(); |
| InterestingDecls.pop_front(); |
| |
| PassInterestingDeclToConsumer(D); |
| } |
| } |
| |
| void ASTReader::PassInterestingDeclToConsumer(Decl *D) { |
| if (ObjCImplDecl *ImplD = dyn_cast<ObjCImplDecl>(D)) |
| PassObjCImplDeclToConsumer(ImplD, Consumer); |
| else |
| Consumer->HandleInterestingDecl(DeclGroupRef(D)); |
| } |
| |
| void ASTReader::StartTranslationUnit(ASTConsumer *Consumer) { |
| this->Consumer = Consumer; |
| |
| if (!Consumer) |
| return; |
| |
| for (unsigned I = 0, N = ExternalDefinitions.size(); I != N; ++I) { |
| // Force deserialization of this decl, which will cause it to be queued for |
| // passing to the consumer. |
| GetDecl(ExternalDefinitions[I]); |
| } |
| ExternalDefinitions.clear(); |
| |
| PassInterestingDeclsToConsumer(); |
| } |
| |
| void ASTReader::PrintStats() { |
| std::fprintf(stderr, "*** AST File Statistics:\n"); |
| |
| unsigned NumTypesLoaded |
| = TypesLoaded.size() - std::count(TypesLoaded.begin(), TypesLoaded.end(), |
| QualType()); |
| unsigned NumDeclsLoaded |
| = DeclsLoaded.size() - std::count(DeclsLoaded.begin(), DeclsLoaded.end(), |
| (Decl *)0); |
| unsigned NumIdentifiersLoaded |
| = IdentifiersLoaded.size() - std::count(IdentifiersLoaded.begin(), |
| IdentifiersLoaded.end(), |
| (IdentifierInfo *)0); |
| unsigned NumMacrosLoaded |
| = MacrosLoaded.size() - std::count(MacrosLoaded.begin(), |
| MacrosLoaded.end(), |
| (MacroInfo *)0); |
| unsigned NumSelectorsLoaded |
| = SelectorsLoaded.size() - std::count(SelectorsLoaded.begin(), |
| SelectorsLoaded.end(), |
| Selector()); |
| |
| if (unsigned TotalNumSLocEntries = getTotalNumSLocs()) |
| std::fprintf(stderr, " %u/%u source location entries read (%f%%)\n", |
| NumSLocEntriesRead, TotalNumSLocEntries, |
| ((float)NumSLocEntriesRead/TotalNumSLocEntries * 100)); |
| if (!TypesLoaded.empty()) |
| std::fprintf(stderr, " %u/%u types read (%f%%)\n", |
| NumTypesLoaded, (unsigned)TypesLoaded.size(), |
| ((float)NumTypesLoaded/TypesLoaded.size() * 100)); |
| if (!DeclsLoaded.empty()) |
| std::fprintf(stderr, " %u/%u declarations read (%f%%)\n", |
| NumDeclsLoaded, (unsigned)DeclsLoaded.size(), |
| ((float)NumDeclsLoaded/DeclsLoaded.size() * 100)); |
| if (!IdentifiersLoaded.empty()) |
| std::fprintf(stderr, " %u/%u identifiers read (%f%%)\n", |
| NumIdentifiersLoaded, (unsigned)IdentifiersLoaded.size(), |
| ((float)NumIdentifiersLoaded/IdentifiersLoaded.size() * 100)); |
| if (!MacrosLoaded.empty()) |
| std::fprintf(stderr, " %u/%u macros read (%f%%)\n", |
| NumMacrosLoaded, (unsigned)MacrosLoaded.size(), |
| ((float)NumMacrosLoaded/MacrosLoaded.size() * 100)); |
| if (!SelectorsLoaded.empty()) |
| std::fprintf(stderr, " %u/%u selectors read (%f%%)\n", |
| NumSelectorsLoaded, (unsigned)SelectorsLoaded.size(), |
| ((float)NumSelectorsLoaded/SelectorsLoaded.size() * 100)); |
| if (TotalNumStatements) |
| std::fprintf(stderr, " %u/%u statements read (%f%%)\n", |
| NumStatementsRead, TotalNumStatements, |
| ((float)NumStatementsRead/TotalNumStatements * 100)); |
| if (TotalNumMacros) |
| std::fprintf(stderr, " %u/%u macros read (%f%%)\n", |
| NumMacrosRead, TotalNumMacros, |
| ((float)NumMacrosRead/TotalNumMacros * 100)); |
| if (TotalLexicalDeclContexts) |
| std::fprintf(stderr, " %u/%u lexical declcontexts read (%f%%)\n", |
| NumLexicalDeclContextsRead, TotalLexicalDeclContexts, |
| ((float)NumLexicalDeclContextsRead/TotalLexicalDeclContexts |
| * 100)); |
| if (TotalVisibleDeclContexts) |
| std::fprintf(stderr, " %u/%u visible declcontexts read (%f%%)\n", |
| NumVisibleDeclContextsRead, TotalVisibleDeclContexts, |
| ((float)NumVisibleDeclContextsRead/TotalVisibleDeclContexts |
| * 100)); |
| if (TotalNumMethodPoolEntries) { |
| std::fprintf(stderr, " %u/%u method pool entries read (%f%%)\n", |
| NumMethodPoolEntriesRead, TotalNumMethodPoolEntries, |
| ((float)NumMethodPoolEntriesRead/TotalNumMethodPoolEntries |
| * 100)); |
| } |
| if (NumMethodPoolLookups) { |
| std::fprintf(stderr, " %u/%u method pool lookups succeeded (%f%%)\n", |
| NumMethodPoolHits, NumMethodPoolLookups, |
| ((float)NumMethodPoolHits/NumMethodPoolLookups * 100.0)); |
| } |
| if (NumMethodPoolTableLookups) { |
| std::fprintf(stderr, " %u/%u method pool table lookups succeeded (%f%%)\n", |
| NumMethodPoolTableHits, NumMethodPoolTableLookups, |
| ((float)NumMethodPoolTableHits/NumMethodPoolTableLookups |
| * 100.0)); |
| } |
| |
| if (NumIdentifierLookupHits) { |
| std::fprintf(stderr, |
| " %u / %u identifier table lookups succeeded (%f%%)\n", |
| NumIdentifierLookupHits, NumIdentifierLookups, |
| (double)NumIdentifierLookupHits*100.0/NumIdentifierLookups); |
| } |
| |
| if (GlobalIndex) { |
| std::fprintf(stderr, "\n"); |
| GlobalIndex->printStats(); |
| } |
| |
| std::fprintf(stderr, "\n"); |
| dump(); |
| std::fprintf(stderr, "\n"); |
| } |
| |
| template<typename Key, typename ModuleFile, unsigned InitialCapacity> |
| static void |
| dumpModuleIDMap(StringRef Name, |
| const ContinuousRangeMap<Key, ModuleFile *, |
| InitialCapacity> &Map) { |
| if (Map.begin() == Map.end()) |
| return; |
| |
| typedef ContinuousRangeMap<Key, ModuleFile *, InitialCapacity> MapType; |
| llvm::errs() << Name << ":\n"; |
| for (typename MapType::const_iterator I = Map.begin(), IEnd = Map.end(); |
| I != IEnd; ++I) { |
| llvm::errs() << " " << I->first << " -> " << I->second->FileName |
| << "\n"; |
| } |
| } |
| |
| void ASTReader::dump() { |
| llvm::errs() << "*** PCH/ModuleFile Remappings:\n"; |
| dumpModuleIDMap("Global bit offset map", GlobalBitOffsetsMap); |
| dumpModuleIDMap("Global source location entry map", GlobalSLocEntryMap); |
| dumpModuleIDMap("Global type map", GlobalTypeMap); |
| dumpModuleIDMap("Global declaration map", GlobalDeclMap); |
| dumpModuleIDMap("Global identifier map", GlobalIdentifierMap); |
| dumpModuleIDMap("Global macro map", GlobalMacroMap); |
| dumpModuleIDMap("Global submodule map", GlobalSubmoduleMap); |
| dumpModuleIDMap("Global selector map", GlobalSelectorMap); |
| dumpModuleIDMap("Global preprocessed entity map", |
| GlobalPreprocessedEntityMap); |
| |
| llvm::errs() << "\n*** PCH/Modules Loaded:"; |
| for (ModuleManager::ModuleConstIterator M = ModuleMgr.begin(), |
| MEnd = ModuleMgr.end(); |
| M != MEnd; ++M) |
| (*M)->dump(); |
| } |
| |
| /// Return the amount of memory used by memory buffers, breaking down |
| /// by heap-backed versus mmap'ed memory. |
| void ASTReader::getMemoryBufferSizes(MemoryBufferSizes &sizes) const { |
| for (ModuleConstIterator I = ModuleMgr.begin(), |
| E = ModuleMgr.end(); I != E; ++I) { |
| if (llvm::MemoryBuffer *buf = (*I)->Buffer.get()) { |
| size_t bytes = buf->getBufferSize(); |
| switch (buf->getBufferKind()) { |
| case llvm::MemoryBuffer::MemoryBuffer_Malloc: |
| sizes.malloc_bytes += bytes; |
| break; |
| case llvm::MemoryBuffer::MemoryBuffer_MMap: |
| sizes.mmap_bytes += bytes; |
| break; |
| } |
| } |
| } |
| } |
| |
| void ASTReader::InitializeSema(Sema &S) { |
| SemaObj = &S; |
| S.addExternalSource(this); |
| |
| // Makes sure any declarations that were deserialized "too early" |
| // still get added to the identifier's declaration chains. |
| for (unsigned I = 0, N = PreloadedDecls.size(); I != N; ++I) { |
| pushExternalDeclIntoScope(PreloadedDecls[I], |
| PreloadedDecls[I]->getDeclName()); |
| } |
| PreloadedDecls.clear(); |
| |
| // Load the offsets of the declarations that Sema references. |
| // They will be lazily deserialized when needed. |
| if (!SemaDeclRefs.empty()) { |
| assert(SemaDeclRefs.size() == 2 && "More decl refs than expected!"); |
| if (!SemaObj->StdNamespace) |
| SemaObj->StdNamespace = SemaDeclRefs[0]; |
| if (!SemaObj->StdBadAlloc) |
| SemaObj->StdBadAlloc = SemaDeclRefs[1]; |
| } |
| |
| if (!FPPragmaOptions.empty()) { |
| assert(FPPragmaOptions.size() == 1 && "Wrong number of FP_PRAGMA_OPTIONS"); |
| SemaObj->FPFeatures.fp_contract = FPPragmaOptions[0]; |
| } |
| |
| if (!OpenCLExtensions.empty()) { |
| unsigned I = 0; |
| #define OPENCLEXT(nm) SemaObj->OpenCLFeatures.nm = OpenCLExtensions[I++]; |
| #include "clang/Basic/OpenCLExtensions.def" |
| |
| assert(OpenCLExtensions.size() == I && "Wrong number of OPENCL_EXTENSIONS"); |
| } |
| } |
| |
| IdentifierInfo* ASTReader::get(const char *NameStart, const char *NameEnd) { |
| // Note that we are loading an identifier. |
| Deserializing AnIdentifier(this); |
| StringRef Name(NameStart, NameEnd - NameStart); |
| |
| // If there is a global index, look there first to determine which modules |
| // provably do not have any results for this identifier. |
| GlobalModuleIndex::HitSet Hits; |
| GlobalModuleIndex::HitSet *HitsPtr = 0; |
| if (!loadGlobalIndex()) { |
| if (GlobalIndex->lookupIdentifier(Name, Hits)) { |
| HitsPtr = &Hits; |
| } |
| } |
| IdentifierLookupVisitor Visitor(Name, /*PriorGeneration=*/0, |
| NumIdentifierLookups, |
| NumIdentifierLookupHits); |
| ModuleMgr.visit(IdentifierLookupVisitor::visit, &Visitor, HitsPtr); |
| IdentifierInfo *II = Visitor.getIdentifierInfo(); |
| markIdentifierUpToDate(II); |
| return II; |
| } |
| |
| namespace clang { |
| /// \brief An identifier-lookup iterator that enumerates all of the |
| /// identifiers stored within a set of AST files. |
| class ASTIdentifierIterator : public IdentifierIterator { |
| /// \brief The AST reader whose identifiers are being enumerated. |
| const ASTReader &Reader; |
| |
| /// \brief The current index into the chain of AST files stored in |
| /// the AST reader. |
| unsigned Index; |
| |
| /// \brief The current position within the identifier lookup table |
| /// of the current AST file. |
| ASTIdentifierLookupTable::key_iterator Current; |
| |
| /// \brief The end position within the identifier lookup table of |
| /// the current AST file. |
| ASTIdentifierLookupTable::key_iterator End; |
| |
| public: |
| explicit ASTIdentifierIterator(const ASTReader &Reader); |
| |
| virtual StringRef Next(); |
| }; |
| } |
| |
| ASTIdentifierIterator::ASTIdentifierIterator(const ASTReader &Reader) |
| : Reader(Reader), Index(Reader.ModuleMgr.size() - 1) { |
| ASTIdentifierLookupTable *IdTable |
| = (ASTIdentifierLookupTable *)Reader.ModuleMgr[Index].IdentifierLookupTable; |
| Current = IdTable->key_begin(); |
| End = IdTable->key_end(); |
| } |
| |
| StringRef ASTIdentifierIterator::Next() { |
| while (Current == End) { |
| // If we have exhausted all of our AST files, we're done. |
| if (Index == 0) |
| return StringRef(); |
| |
| --Index; |
| ASTIdentifierLookupTable *IdTable |
| = (ASTIdentifierLookupTable *)Reader.ModuleMgr[Index]. |
| IdentifierLookupTable; |
| Current = IdTable->key_begin(); |
| End = IdTable->key_end(); |
| } |
| |
| // We have any identifiers remaining in the current AST file; return |
| // the next one. |
| StringRef Result = *Current; |
| ++Current; |
| return Result; |
| } |
| |
| IdentifierIterator *ASTReader::getIdentifiers() { |
| if (!loadGlobalIndex()) |
| return GlobalIndex->createIdentifierIterator(); |
| |
| return new ASTIdentifierIterator(*this); |
| } |
| |
| namespace clang { namespace serialization { |
| class ReadMethodPoolVisitor { |
| ASTReader &Reader; |
| Selector Sel; |
| unsigned PriorGeneration; |
| unsigned InstanceBits; |
| unsigned FactoryBits; |
| SmallVector<ObjCMethodDecl *, 4> InstanceMethods; |
| SmallVector<ObjCMethodDecl *, 4> FactoryMethods; |
| |
| public: |
| ReadMethodPoolVisitor(ASTReader &Reader, Selector Sel, |
| unsigned PriorGeneration) |
| : Reader(Reader), Sel(Sel), PriorGeneration(PriorGeneration), |
| InstanceBits(0), FactoryBits(0) { } |
| |
| static bool visit(ModuleFile &M, void *UserData) { |
| ReadMethodPoolVisitor *This |
| = static_cast<ReadMethodPoolVisitor *>(UserData); |
| |
| if (!M.SelectorLookupTable) |
| return false; |
| |
| // If we've already searched this module file, skip it now. |
| if (M.Generation <= This->PriorGeneration) |
| return true; |
| |
| ++This->Reader.NumMethodPoolTableLookups; |
| ASTSelectorLookupTable *PoolTable |
| = (ASTSelectorLookupTable*)M.SelectorLookupTable; |
| ASTSelectorLookupTable::iterator Pos = PoolTable->find(This->Sel); |
| if (Pos == PoolTable->end()) |
| return false; |
| |
| ++This->Reader.NumMethodPoolTableHits; |
| ++This->Reader.NumSelectorsRead; |
| // FIXME: Not quite happy with the statistics here. We probably should |
| // disable this tracking when called via LoadSelector. |
| // Also, should entries without methods count as misses? |
| ++This->Reader.NumMethodPoolEntriesRead; |
| ASTSelectorLookupTrait::data_type Data = *Pos; |
| if (This->Reader.DeserializationListener) |
| This->Reader.DeserializationListener->SelectorRead(Data.ID, |
| This->Sel); |
| |
| This->InstanceMethods.append(Data.Instance.begin(), Data.Instance.end()); |
| This->FactoryMethods.append(Data.Factory.begin(), Data.Factory.end()); |
| This->InstanceBits = Data.InstanceBits; |
| This->FactoryBits = Data.FactoryBits; |
| return true; |
| } |
| |
| /// \brief Retrieve the instance methods found by this visitor. |
| ArrayRef<ObjCMethodDecl *> getInstanceMethods() const { |
| return InstanceMethods; |
| } |
| |
| /// \brief Retrieve the instance methods found by this visitor. |
| ArrayRef<ObjCMethodDecl *> getFactoryMethods() const { |
| return FactoryMethods; |
| } |
| |
| unsigned getInstanceBits() const { return InstanceBits; } |
| unsigned getFactoryBits() const { return FactoryBits; } |
| }; |
| } } // end namespace clang::serialization |
| |
| /// \brief Add the given set of methods to the method list. |
| static void addMethodsToPool(Sema &S, ArrayRef<ObjCMethodDecl *> Methods, |
| ObjCMethodList &List) { |
| for (unsigned I = 0, N = Methods.size(); I != N; ++I) { |
| S.addMethodToGlobalList(&List, Methods[I]); |
| } |
| } |
| |
| void ASTReader::ReadMethodPool(Selector Sel) { |
| // Get the selector generation and update it to the current generation. |
| unsigned &Generation = SelectorGeneration[Sel]; |
| unsigned PriorGeneration = Generation; |
| Generation = CurrentGeneration; |
| |
| // Search for methods defined with this selector. |
| ++NumMethodPoolLookups; |
| ReadMethodPoolVisitor Visitor(*this, Sel, PriorGeneration); |
| ModuleMgr.visit(&ReadMethodPoolVisitor::visit, &Visitor); |
| |
| if (Visitor.getInstanceMethods().empty() && |
| Visitor.getFactoryMethods().empty()) |
| return; |
| |
| ++NumMethodPoolHits; |
| |
| if (!getSema()) |
| return; |
| |
| Sema &S = *getSema(); |
| Sema::GlobalMethodPool::iterator Pos |
| = S.MethodPool.insert(std::make_pair(Sel, Sema::GlobalMethods())).first; |
| |
| addMethodsToPool(S, Visitor.getInstanceMethods(), Pos->second.first); |
| addMethodsToPool(S, Visitor.getFactoryMethods(), Pos->second.second); |
| Pos->second.first.setBits(Visitor.getInstanceBits()); |
| Pos->second.second.setBits(Visitor.getFactoryBits()); |
| } |
| |
| void ASTReader::ReadKnownNamespaces( |
| SmallVectorImpl<NamespaceDecl *> &Namespaces) { |
| Namespaces.clear(); |
| |
| for (unsigned I = 0, N = KnownNamespaces.size(); I != N; ++I) { |
| if (NamespaceDecl *Namespace |
| = dyn_cast_or_null<NamespaceDecl>(GetDecl(KnownNamespaces[I]))) |
| Namespaces.push_back(Namespace); |
| } |
| } |
| |
| void ASTReader::ReadUndefinedButUsed( |
| llvm::DenseMap<NamedDecl*, SourceLocation> &Undefined) { |
| for (unsigned Idx = 0, N = UndefinedButUsed.size(); Idx != N;) { |
| NamedDecl *D = cast<NamedDecl>(GetDecl(UndefinedButUsed[Idx++])); |
| SourceLocation Loc = |
| SourceLocation::getFromRawEncoding(UndefinedButUsed[Idx++]); |
| Undefined.insert(std::make_pair(D, Loc)); |
| } |
| } |
| |
| void ASTReader::ReadTentativeDefinitions( |
| SmallVectorImpl<VarDecl *> &TentativeDefs) { |
| for (unsigned I = 0, N = TentativeDefinitions.size(); I != N; ++I) { |
| VarDecl *Var = dyn_cast_or_null<VarDecl>(GetDecl(TentativeDefinitions[I])); |
| if (Var) |
| TentativeDefs.push_back(Var); |
| } |
| TentativeDefinitions.clear(); |
| } |
| |
| void ASTReader::ReadUnusedFileScopedDecls( |
| SmallVectorImpl<const DeclaratorDecl *> &Decls) { |
| for (unsigned I = 0, N = UnusedFileScopedDecls.size(); I != N; ++I) { |
| DeclaratorDecl *D |
| = dyn_cast_or_null<DeclaratorDecl>(GetDecl(UnusedFileScopedDecls[I])); |
| if (D) |
| Decls.push_back(D); |
| } |
| UnusedFileScopedDecls.clear(); |
| } |
| |
| void ASTReader::ReadDelegatingConstructors( |
| SmallVectorImpl<CXXConstructorDecl *> &Decls) { |
| for (unsigned I = 0, N = DelegatingCtorDecls.size(); I != N; ++I) { |
| CXXConstructorDecl *D |
| = dyn_cast_or_null<CXXConstructorDecl>(GetDecl(DelegatingCtorDecls[I])); |
| if (D) |
| Decls.push_back(D); |
| } |
| DelegatingCtorDecls.clear(); |
| } |
| |
| void ASTReader::ReadExtVectorDecls(SmallVectorImpl<TypedefNameDecl *> &Decls) { |
| for (unsigned I = 0, N = ExtVectorDecls.size(); I != N; ++I) { |
| TypedefNameDecl *D |
| = dyn_cast_or_null<TypedefNameDecl>(GetDecl(ExtVectorDecls[I])); |
| if (D) |
| Decls.push_back(D); |
| } |
| ExtVectorDecls.clear(); |
| } |
| |
| void ASTReader::ReadDynamicClasses(SmallVectorImpl<CXXRecordDecl *> &Decls) { |
| for (unsigned I = 0, N = DynamicClasses.size(); I != N; ++I) { |
| CXXRecordDecl *D |
| = dyn_cast_or_null<CXXRecordDecl>(GetDecl(DynamicClasses[I])); |
| if (D) |
| Decls.push_back(D); |
| } |
| DynamicClasses.clear(); |
| } |
| |
| void |
| ASTReader::ReadLocallyScopedExternCDecls(SmallVectorImpl<NamedDecl *> &Decls) { |
| for (unsigned I = 0, N = LocallyScopedExternCDecls.size(); I != N; ++I) { |
| NamedDecl *D |
| = dyn_cast_or_null<NamedDecl>(GetDecl(LocallyScopedExternCDecls[I])); |
| if (D) |
| Decls.push_back(D); |
| } |
| LocallyScopedExternCDecls.clear(); |
| } |
| |
| void ASTReader::ReadReferencedSelectors( |
| SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels) { |
| if (ReferencedSelectorsData.empty()) |
| return; |
| |
| // If there are @selector references added them to its pool. This is for |
| // implementation of -Wselector. |
| unsigned int DataSize = ReferencedSelectorsData.size()-1; |
| unsigned I = 0; |
| while (I < DataSize) { |
| Selector Sel = DecodeSelector(ReferencedSelectorsData[I++]); |
| SourceLocation SelLoc |
| = SourceLocation::getFromRawEncoding(ReferencedSelectorsData[I++]); |
| Sels.push_back(std::make_pair(Sel, SelLoc)); |
| } |
| ReferencedSelectorsData.clear(); |
| } |
| |
| void ASTReader::ReadWeakUndeclaredIdentifiers( |
| SmallVectorImpl<std::pair<IdentifierInfo *, WeakInfo> > &WeakIDs) { |
| if (WeakUndeclaredIdentifiers.empty()) |
| return; |
| |
| for (unsigned I = 0, N = WeakUndeclaredIdentifiers.size(); I < N; /*none*/) { |
| IdentifierInfo *WeakId |
| = DecodeIdentifierInfo(WeakUndeclaredIdentifiers[I++]); |
| IdentifierInfo *AliasId |
| = DecodeIdentifierInfo(WeakUndeclaredIdentifiers[I++]); |
| SourceLocation Loc |
| = SourceLocation::getFromRawEncoding(WeakUndeclaredIdentifiers[I++]); |
| bool Used = WeakUndeclaredIdentifiers[I++]; |
| WeakInfo WI(AliasId, Loc); |
| WI.setUsed(Used); |
| WeakIDs.push_back(std::make_pair(WeakId, WI)); |
| } |
| WeakUndeclaredIdentifiers.clear(); |
| } |
| |
| void ASTReader::ReadUsedVTables(SmallVectorImpl<ExternalVTableUse> &VTables) { |
| for (unsigned Idx = 0, N = VTableUses.size(); Idx < N; /* In loop */) { |
| ExternalVTableUse VT; |
| VT.Record = dyn_cast_or_null<CXXRecordDecl>(GetDecl(VTableUses[Idx++])); |
| VT.Location = SourceLocation::getFromRawEncoding(VTableUses[Idx++]); |
| VT.DefinitionRequired = VTableUses[Idx++]; |
| VTables.push_back(VT); |
| } |
| |
| VTableUses.clear(); |
| } |
| |
| void ASTReader::ReadPendingInstantiations( |
| SmallVectorImpl<std::pair<ValueDecl *, SourceLocation> > &Pending) { |
| for (unsigned Idx = 0, N = PendingInstantiations.size(); Idx < N;) { |
| ValueDecl *D = cast<ValueDecl>(GetDecl(PendingInstantiations[Idx++])); |
| SourceLocation Loc |
| = SourceLocation::getFromRawEncoding(PendingInstantiations[Idx++]); |
| |
| Pending.push_back(std::make_pair(D, Loc)); |
| } |
| PendingInstantiations.clear(); |
| } |
| |
| void ASTReader::LoadSelector(Selector Sel) { |
| // It would be complicated to avoid reading the methods anyway. So don't. |
| ReadMethodPool(Sel); |
| } |
| |
| void ASTReader::SetIdentifierInfo(IdentifierID ID, IdentifierInfo *II) { |
| assert(ID && "Non-zero identifier ID required"); |
| assert(ID <= IdentifiersLoaded.size() && "identifier ID out of range"); |
| IdentifiersLoaded[ID - 1] = II; |
| if (DeserializationListener) |
| DeserializationListener->IdentifierRead(ID, II); |
| } |
| |
| /// \brief Set the globally-visible declarations associated with the given |
| /// identifier. |
| /// |
| /// If the AST reader is currently in a state where the given declaration IDs |
| /// cannot safely be resolved, they are queued until it is safe to resolve |
| /// them. |
| /// |
| /// \param II an IdentifierInfo that refers to one or more globally-visible |
| /// declarations. |
| /// |
| /// \param DeclIDs the set of declaration IDs with the name @p II that are |
| /// visible at global scope. |
| /// |
| /// \param Decls if non-null, this vector will be populated with the set of |
| /// deserialized declarations. These declarations will not be pushed into |
| /// scope. |
| void |
| ASTReader::SetGloballyVisibleDecls(IdentifierInfo *II, |
| const SmallVectorImpl<uint32_t> &DeclIDs, |
| SmallVectorImpl<Decl *> *Decls) { |
| if (NumCurrentElementsDeserializing && !Decls) { |
| PendingIdentifierInfos[II].append(DeclIDs.begin(), DeclIDs.end()); |
| return; |
| } |
| |
| for (unsigned I = 0, N = DeclIDs.size(); I != N; ++I) { |
| NamedDecl *D = cast<NamedDecl>(GetDecl(DeclIDs[I])); |
| if (SemaObj) { |
| // If we're simply supposed to record the declarations, do so now. |
| if (Decls) { |
| Decls->push_back(D); |
| continue; |
| } |
| |
| // Introduce this declaration into the translation-unit scope |
| // and add it to the declaration chain for this identifier, so |
| // that (unqualified) name lookup will find it. |
| pushExternalDeclIntoScope(D, II); |
| } else { |
| // Queue this declaration so that it will be added to the |
| // translation unit scope and identifier's declaration chain |
| // once a Sema object is known. |
| PreloadedDecls.push_back(D); |
| } |
| } |
| } |
| |
| IdentifierInfo *ASTReader::DecodeIdentifierInfo(IdentifierID ID) { |
| if (ID == 0) |
| return 0; |
| |
| if (IdentifiersLoaded.empty()) { |
| Error("no identifier table in AST file"); |
| return 0; |
| } |
| |
| ID -= 1; |
| if (!IdentifiersLoaded[ID]) { |
| GlobalIdentifierMapType::iterator I = GlobalIdentifierMap.find(ID + 1); |
| assert(I != GlobalIdentifierMap.end() && "Corrupted global identifier map"); |
| ModuleFile *M = I->second; |
| unsigned Index = ID - M->BaseIdentifierID; |
| const char *Str = M->IdentifierTableData + M->IdentifierOffsets[Index]; |
| |
| // All of the strings in the AST file are preceded by a 16-bit length. |
| // Extract that 16-bit length to avoid having to execute strlen(). |
| // NOTE: 'StrLenPtr' is an 'unsigned char*' so that we load bytes as |
| // unsigned integers. This is important to avoid integer overflow when |
| // we cast them to 'unsigned'. |
| const unsigned char *StrLenPtr = (const unsigned char*) Str - 2; |
| unsigned StrLen = (((unsigned) StrLenPtr[0]) |
| | (((unsigned) StrLenPtr[1]) << 8)) - 1; |
| IdentifiersLoaded[ID] |
| = &PP.getIdentifierTable().get(StringRef(Str, StrLen)); |
| if (DeserializationListener) |
| DeserializationListener->IdentifierRead(ID + 1, IdentifiersLoaded[ID]); |
| } |
| |
| return IdentifiersLoaded[ID]; |
| } |
| |
| IdentifierInfo *ASTReader::getLocalIdentifier(ModuleFile &M, unsigned LocalID) { |
| return DecodeIdentifierInfo(getGlobalIdentifierID(M, LocalID)); |
| } |
| |
| IdentifierID ASTReader::getGlobalIdentifierID(ModuleFile &M, unsigned LocalID) { |
| if (LocalID < NUM_PREDEF_IDENT_IDS) |
| return LocalID; |
| |
| ContinuousRangeMap<uint32_t, int, 2>::iterator I |
| = M.IdentifierRemap.find(LocalID - NUM_PREDEF_IDENT_IDS); |
| assert(I != M.IdentifierRemap.end() |
| && "Invalid index into identifier index remap"); |
| |
| return LocalID + I->second; |
| } |
| |
| MacroInfo *ASTReader::getMacro(MacroID ID) { |
| if (ID == 0) |
| return 0; |
| |
| if (MacrosLoaded.empty()) { |
| Error("no macro table in AST file"); |
| return 0; |
| } |
| |
| ID -= NUM_PREDEF_MACRO_IDS; |
| if (!MacrosLoaded[ID]) { |
| GlobalMacroMapType::iterator I |
| = GlobalMacroMap.find(ID + NUM_PREDEF_MACRO_IDS); |
| assert(I != GlobalMacroMap.end() && "Corrupted global macro map"); |
| ModuleFile *M = I->second; |
| unsigned Index = ID - M->BaseMacroID; |
| MacrosLoaded[ID] = ReadMacroRecord(*M, M->MacroOffsets[Index]); |
| |
| if (DeserializationListener) |
| DeserializationListener->MacroRead(ID + NUM_PREDEF_MACRO_IDS, |
| MacrosLoaded[ID]); |
| } |
| |
| return MacrosLoaded[ID]; |
| } |
| |
| MacroID ASTReader::getGlobalMacroID(ModuleFile &M, unsigned LocalID) { |
| if (LocalID < NUM_PREDEF_MACRO_IDS) |
| return LocalID; |
| |
| ContinuousRangeMap<uint32_t, int, 2>::iterator I |
| = M.MacroRemap.find(LocalID - NUM_PREDEF_MACRO_IDS); |
| assert(I != M.MacroRemap.end() && "Invalid index into macro index remap"); |
| |
| return LocalID + I->second; |
| } |
| |
| serialization::SubmoduleID |
| ASTReader::getGlobalSubmoduleID(ModuleFile &M, unsigned LocalID) { |
| if (LocalID < NUM_PREDEF_SUBMODULE_IDS) |
| return LocalID; |
| |
| ContinuousRangeMap<uint32_t, int, 2>::iterator I |
| = M.SubmoduleRemap.find(LocalID - NUM_PREDEF_SUBMODULE_IDS); |
| assert(I != M.SubmoduleRemap.end() |
| && "Invalid index into submodule index remap"); |
| |
| return LocalID + I->second; |
| } |
| |
| Module *ASTReader::getSubmodule(SubmoduleID GlobalID) { |
| if (GlobalID < NUM_PREDEF_SUBMODULE_IDS) { |
| assert(GlobalID == 0 && "Unhandled global submodule ID"); |
| return 0; |
| } |
| |
| if (GlobalID > SubmodulesLoaded.size()) { |
| Error("submodule ID out of range in AST file"); |
| return 0; |
| } |
| |
| return SubmodulesLoaded[GlobalID - NUM_PREDEF_SUBMODULE_IDS]; |
| } |
| |
| Module *ASTReader::getModule(unsigned ID) { |
| return getSubmodule(ID); |
| } |
| |
| Selector ASTReader::getLocalSelector(ModuleFile &M, unsigned LocalID) { |
| return DecodeSelector(getGlobalSelectorID(M, LocalID)); |
| } |
| |
| Selector ASTReader::DecodeSelector(serialization::SelectorID ID) { |
| if (ID == 0) |
| return Selector(); |
| |
| if (ID > SelectorsLoaded.size()) { |
| Error("selector ID out of range in AST file"); |
| return Selector(); |
| } |
| |
| if (SelectorsLoaded[ID - 1].getAsOpaquePtr() == 0) { |
| // Load this selector from the selector table. |
| GlobalSelectorMapType::iterator I = GlobalSelectorMap.find(ID); |
| assert(I != GlobalSelectorMap.end() && "Corrupted global selector map"); |
| ModuleFile &M = *I->second; |
| ASTSelectorLookupTrait Trait(*this, M); |
| unsigned Idx = ID - M.BaseSelectorID - NUM_PREDEF_SELECTOR_IDS; |
| SelectorsLoaded[ID - 1] = |
| Trait.ReadKey(M.SelectorLookupTableData + M.SelectorOffsets[Idx], 0); |
| if (DeserializationListener) |
| DeserializationListener->SelectorRead(ID, SelectorsLoaded[ID - 1]); |
| } |
| |
| return SelectorsLoaded[ID - 1]; |
| } |
| |
| Selector ASTReader::GetExternalSelector(serialization::SelectorID ID) { |
| return DecodeSelector(ID); |
| } |
| |
| uint32_t ASTReader::GetNumExternalSelectors() { |
| // ID 0 (the null selector) is considered an external selector. |
| return getTotalNumSelectors() + 1; |
| } |
| |
| serialization::SelectorID |
| ASTReader::getGlobalSelectorID(ModuleFile &M, unsigned LocalID) const { |
| if (LocalID < NUM_PREDEF_SELECTOR_IDS) |
| return LocalID; |
| |
| ContinuousRangeMap<uint32_t, int, 2>::iterator I |
| = M.SelectorRemap.find(LocalID - NUM_PREDEF_SELECTOR_IDS); |
| assert(I != M.SelectorRemap.end() |
| && "Invalid index into selector index remap"); |
| |
| return LocalID + I->second; |
| } |
| |
| DeclarationName |
| ASTReader::ReadDeclarationName(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx) { |
| DeclarationName::NameKind Kind = (DeclarationName::NameKind)Record[Idx++]; |
| switch (Kind) { |
| case DeclarationName::Identifier: |
| return DeclarationName(GetIdentifierInfo(F, Record, Idx)); |
| |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| return DeclarationName(ReadSelector(F, Record, Idx)); |
| |
| case DeclarationName::CXXConstructorName: |
| return Context.DeclarationNames.getCXXConstructorName( |
| Context.getCanonicalType(readType(F, Record, Idx))); |
| |
| case DeclarationName::CXXDestructorName: |
| return Context.DeclarationNames.getCXXDestructorName( |
| Context.getCanonicalType(readType(F, Record, Idx))); |
| |
| case DeclarationName::CXXConversionFunctionName: |
| return Context.DeclarationNames.getCXXConversionFunctionName( |
| Context.getCanonicalType(readType(F, Record, Idx))); |
| |
| case DeclarationName::CXXOperatorName: |
| return Context.DeclarationNames.getCXXOperatorName( |
| (OverloadedOperatorKind)Record[Idx++]); |
| |
| case DeclarationName::CXXLiteralOperatorName: |
| return Context.DeclarationNames.getCXXLiteralOperatorName( |
| GetIdentifierInfo(F, Record, Idx)); |
| |
| case DeclarationName::CXXUsingDirective: |
| return DeclarationName::getUsingDirectiveName(); |
| } |
| |
| llvm_unreachable("Invalid NameKind!"); |
| } |
| |
| void ASTReader::ReadDeclarationNameLoc(ModuleFile &F, |
| DeclarationNameLoc &DNLoc, |
| DeclarationName Name, |
| const RecordData &Record, unsigned &Idx) { |
| switch (Name.getNameKind()) { |
| case DeclarationName::CXXConstructorName: |
| case DeclarationName::CXXDestructorName: |
| case DeclarationName::CXXConversionFunctionName: |
| DNLoc.NamedType.TInfo = GetTypeSourceInfo(F, Record, Idx); |
| break; |
| |
| case DeclarationName::CXXOperatorName: |
| DNLoc.CXXOperatorName.BeginOpNameLoc |
| = ReadSourceLocation(F, Record, Idx).getRawEncoding(); |
| DNLoc.CXXOperatorName.EndOpNameLoc |
| = ReadSourceLocation(F, Record, Idx).getRawEncoding(); |
| break; |
| |
| case DeclarationName::CXXLiteralOperatorName: |
| DNLoc.CXXLiteralOperatorName.OpNameLoc |
| = ReadSourceLocation(F, Record, Idx).getRawEncoding(); |
| break; |
| |
| case DeclarationName::Identifier: |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| case DeclarationName::CXXUsingDirective: |
| break; |
| } |
| } |
| |
| void ASTReader::ReadDeclarationNameInfo(ModuleFile &F, |
| DeclarationNameInfo &NameInfo, |
| const RecordData &Record, unsigned &Idx) { |
| NameInfo.setName(ReadDeclarationName(F, Record, Idx)); |
| NameInfo.setLoc(ReadSourceLocation(F, Record, Idx)); |
| DeclarationNameLoc DNLoc; |
| ReadDeclarationNameLoc(F, DNLoc, NameInfo.getName(), Record, Idx); |
| NameInfo.setInfo(DNLoc); |
| } |
| |
| void ASTReader::ReadQualifierInfo(ModuleFile &F, QualifierInfo &Info, |
| const RecordData &Record, unsigned &Idx) { |
| Info.QualifierLoc = ReadNestedNameSpecifierLoc(F, Record, Idx); |
| unsigned NumTPLists = Record[Idx++]; |
| Info.NumTemplParamLists = NumTPLists; |
| if (NumTPLists) { |
| Info.TemplParamLists = new (Context) TemplateParameterList*[NumTPLists]; |
| for (unsigned i=0; i != NumTPLists; ++i) |
| Info.TemplParamLists[i] = ReadTemplateParameterList(F, Record, Idx); |
| } |
| } |
| |
| TemplateName |
| ASTReader::ReadTemplateName(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx) { |
| TemplateName::NameKind Kind = (TemplateName::NameKind)Record[Idx++]; |
| switch (Kind) { |
| case TemplateName::Template: |
| return TemplateName(ReadDeclAs<TemplateDecl>(F, Record, Idx)); |
| |
| case TemplateName::OverloadedTemplate: { |
| unsigned size = Record[Idx++]; |
| UnresolvedSet<8> Decls; |
| while (size--) |
| Decls.addDecl(ReadDeclAs<NamedDecl>(F, Record, Idx)); |
| |
| return Context.getOverloadedTemplateName(Decls.begin(), Decls.end()); |
| } |
| |
| case TemplateName::QualifiedTemplate: { |
| NestedNameSpecifier *NNS = ReadNestedNameSpecifier(F, Record, Idx); |
| bool hasTemplKeyword = Record[Idx++]; |
| TemplateDecl *Template = ReadDeclAs<TemplateDecl>(F, Record, Idx); |
| return Context.getQualifiedTemplateName(NNS, hasTemplKeyword, Template); |
| } |
| |
| case TemplateName::DependentTemplate: { |
| NestedNameSpecifier *NNS = ReadNestedNameSpecifier(F, Record, Idx); |
| if (Record[Idx++]) // isIdentifier |
| return Context.getDependentTemplateName(NNS, |
| GetIdentifierInfo(F, Record, |
| Idx)); |
| return Context.getDependentTemplateName(NNS, |
| (OverloadedOperatorKind)Record[Idx++]); |
| } |
| |
| case TemplateName::SubstTemplateTemplateParm: { |
| TemplateTemplateParmDecl *param |
| = ReadDeclAs<TemplateTemplateParmDecl>(F, Record, Idx); |
| if (!param) return TemplateName(); |
| TemplateName replacement = ReadTemplateName(F, Record, Idx); |
| return Context.getSubstTemplateTemplateParm(param, replacement); |
| } |
| |
| case TemplateName::SubstTemplateTemplateParmPack: { |
| TemplateTemplateParmDecl *Param |
| = ReadDeclAs<TemplateTemplateParmDecl>(F, Record, Idx); |
| if (!Param) |
| return TemplateName(); |
| |
| TemplateArgument ArgPack = ReadTemplateArgument(F, Record, Idx); |
| if (ArgPack.getKind() != TemplateArgument::Pack) |
| return TemplateName(); |
| |
| return Context.getSubstTemplateTemplateParmPack(Param, ArgPack); |
| } |
| } |
| |
| llvm_unreachable("Unhandled template name kind!"); |
| } |
| |
| TemplateArgument |
| ASTReader::ReadTemplateArgument(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx) { |
| TemplateArgument::ArgKind Kind = (TemplateArgument::ArgKind)Record[Idx++]; |
| switch (Kind) { |
| case TemplateArgument::Null: |
| return TemplateArgument(); |
| case TemplateArgument::Type: |
| return TemplateArgument(readType(F, Record, Idx)); |
| case TemplateArgument::Declaration: { |
| ValueDecl *D = ReadDeclAs<ValueDecl>(F, Record, Idx); |
| bool ForReferenceParam = Record[Idx++]; |
| return TemplateArgument(D, ForReferenceParam); |
| } |
| case TemplateArgument::NullPtr: |
| return TemplateArgument(readType(F, Record, Idx), /*isNullPtr*/true); |
| case TemplateArgument::Integral: { |
| llvm::APSInt Value = ReadAPSInt(Record, Idx); |
| QualType T = readType(F, Record, Idx); |
| return TemplateArgument(Context, Value, T); |
| } |
| case TemplateArgument::Template: |
| return TemplateArgument(ReadTemplateName(F, Record, Idx)); |
| case TemplateArgument::TemplateExpansion: { |
| TemplateName Name = ReadTemplateName(F, Record, Idx); |
| Optional<unsigned> NumTemplateExpansions; |
| if (unsigned NumExpansions = Record[Idx++]) |
| NumTemplateExpansions = NumExpansions - 1; |
| return TemplateArgument(Name, NumTemplateExpansions); |
| } |
| case TemplateArgument::Expression: |
| return TemplateArgument(ReadExpr(F)); |
| case TemplateArgument::Pack: { |
| unsigned NumArgs = Record[Idx++]; |
| TemplateArgument *Args = new (Context) TemplateArgument[NumArgs]; |
| for (unsigned I = 0; I != NumArgs; ++I) |
| Args[I] = ReadTemplateArgument(F, Record, Idx); |
| return TemplateArgument(Args, NumArgs); |
| } |
| } |
| |
| llvm_unreachable("Unhandled template argument kind!"); |
| } |
| |
| TemplateParameterList * |
| ASTReader::ReadTemplateParameterList(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx) { |
| SourceLocation TemplateLoc = ReadSourceLocation(F, Record, Idx); |
| SourceLocation LAngleLoc = ReadSourceLocation(F, Record, Idx); |
| SourceLocation RAngleLoc = ReadSourceLocation(F, Record, Idx); |
| |
| unsigned NumParams = Record[Idx++]; |
| SmallVector<NamedDecl *, 16> Params; |
| Params.reserve(NumParams); |
| while (NumParams--) |
| Params.push_back(ReadDeclAs<NamedDecl>(F, Record, Idx)); |
| |
| TemplateParameterList* TemplateParams = |
| TemplateParameterList::Create(Context, TemplateLoc, LAngleLoc, |
| Params.data(), Params.size(), RAngleLoc); |
| return TemplateParams; |
| } |
| |
| void |
| ASTReader:: |
| ReadTemplateArgumentList(SmallVector<TemplateArgument, 8> &TemplArgs, |
| ModuleFile &F, const RecordData &Record, |
| unsigned &Idx) { |
| unsigned NumTemplateArgs = Record[Idx++]; |
| TemplArgs.reserve(NumTemplateArgs); |
| while (NumTemplateArgs--) |
| TemplArgs.push_back(ReadTemplateArgument(F, Record, Idx)); |
| } |
| |
| /// \brief Read a UnresolvedSet structure. |
| void ASTReader::ReadUnresolvedSet(ModuleFile &F, ASTUnresolvedSet &Set, |
| const RecordData &Record, unsigned &Idx) { |
| unsigned NumDecls = Record[Idx++]; |
| Set.reserve(Context, NumDecls); |
| while (NumDecls--) { |
| NamedDecl *D = ReadDeclAs<NamedDecl>(F, Record, Idx); |
| AccessSpecifier AS = (AccessSpecifier)Record[Idx++]; |
| Set.addDecl(Context, D, AS); |
| } |
| } |
| |
| CXXBaseSpecifier |
| ASTReader::ReadCXXBaseSpecifier(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx) { |
| bool isVirtual = static_cast<bool>(Record[Idx++]); |
| bool isBaseOfClass = static_cast<bool>(Record[Idx++]); |
| AccessSpecifier AS = static_cast<AccessSpecifier>(Record[Idx++]); |
| bool inheritConstructors = static_cast<bool>(Record[Idx++]); |
| TypeSourceInfo *TInfo = GetTypeSourceInfo(F, Record, Idx); |
| SourceRange Range = ReadSourceRange(F, Record, Idx); |
| SourceLocation EllipsisLoc = ReadSourceLocation(F, Record, Idx); |
| CXXBaseSpecifier Result(Range, isVirtual, isBaseOfClass, AS, TInfo, |
| EllipsisLoc); |
| Result.setInheritConstructors(inheritConstructors); |
| return Result; |
| } |
| |
| std::pair<CXXCtorInitializer **, unsigned> |
| ASTReader::ReadCXXCtorInitializers(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx) { |
| CXXCtorInitializer **CtorInitializers = 0; |
| unsigned NumInitializers = Record[Idx++]; |
| if (NumInitializers) { |
| CtorInitializers |
| = new (Context) CXXCtorInitializer*[NumInitializers]; |
| for (unsigned i=0; i != NumInitializers; ++i) { |
| TypeSourceInfo *TInfo = 0; |
| bool IsBaseVirtual = false; |
| FieldDecl *Member = 0; |
| IndirectFieldDecl *IndirectMember = 0; |
| |
| CtorInitializerType Type = (CtorInitializerType)Record[Idx++]; |
| switch (Type) { |
| case CTOR_INITIALIZER_BASE: |
| TInfo = GetTypeSourceInfo(F, Record, Idx); |
| IsBaseVirtual = Record[Idx++]; |
| break; |
| |
| case CTOR_INITIALIZER_DELEGATING: |
| TInfo = GetTypeSourceInfo(F, Record, Idx); |
| break; |
| |
| case CTOR_INITIALIZER_MEMBER: |
| Member = ReadDeclAs<FieldDecl>(F, Record, Idx); |
| break; |
| |
| case CTOR_INITIALIZER_INDIRECT_MEMBER: |
| IndirectMember = ReadDeclAs<IndirectFieldDecl>(F, Record, Idx); |
| break; |
| } |
| |
| SourceLocation MemberOrEllipsisLoc = ReadSourceLocation(F, Record, Idx); |
| Expr *Init = ReadExpr(F); |
| SourceLocation LParenLoc = ReadSourceLocation(F, Record, Idx); |
| SourceLocation RParenLoc = ReadSourceLocation(F, Record, Idx); |
| bool IsWritten = Record[Idx++]; |
| unsigned SourceOrderOrNumArrayIndices; |
| SmallVector<VarDecl *, 8> Indices; |
| if (IsWritten) { |
| SourceOrderOrNumArrayIndices = Record[Idx++]; |
| } else { |
| SourceOrderOrNumArrayIndices = Record[Idx++]; |
| Indices.reserve(SourceOrderOrNumArrayIndices); |
| for (unsigned i=0; i != SourceOrderOrNumArrayIndices; ++i) |
| Indices.push_back(ReadDeclAs<VarDecl>(F, Record, Idx)); |
| } |
| |
| CXXCtorInitializer *BOMInit; |
| if (Type == CTOR_INITIALIZER_BASE) { |
| BOMInit = new (Context) CXXCtorInitializer(Context, TInfo, IsBaseVirtual, |
| LParenLoc, Init, RParenLoc, |
| MemberOrEllipsisLoc); |
| } else if (Type == CTOR_INITIALIZER_DELEGATING) { |
| BOMInit = new (Context) CXXCtorInitializer(Context, TInfo, LParenLoc, |
| Init, RParenLoc); |
| } else if (IsWritten) { |
| if (Member) |
| BOMInit = new (Context) CXXCtorInitializer(Context, Member, MemberOrEllipsisLoc, |
| LParenLoc, Init, RParenLoc); |
| else |
| BOMInit = new (Context) CXXCtorInitializer(Context, IndirectMember, |
| MemberOrEllipsisLoc, LParenLoc, |
| Init, RParenLoc); |
| } else { |
| BOMInit = CXXCtorInitializer::Create(Context, Member, MemberOrEllipsisLoc, |
| LParenLoc, Init, RParenLoc, |
| Indices.data(), Indices.size()); |
| } |
| |
| if (IsWritten) |
| BOMInit->setSourceOrder(SourceOrderOrNumArrayIndices); |
| CtorInitializers[i] = BOMInit; |
| } |
| } |
| |
| return std::make_pair(CtorInitializers, NumInitializers); |
| } |
| |
| NestedNameSpecifier * |
| ASTReader::ReadNestedNameSpecifier(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx) { |
| unsigned N = Record[Idx++]; |
| NestedNameSpecifier *NNS = 0, *Prev = 0; |
| for (unsigned I = 0; I != N; ++I) { |
| NestedNameSpecifier::SpecifierKind Kind |
| = (NestedNameSpecifier::SpecifierKind)Record[Idx++]; |
| switch (Kind) { |
| case NestedNameSpecifier::Identifier: { |
| IdentifierInfo *II = GetIdentifierInfo(F, Record, Idx); |
| NNS = NestedNameSpecifier::Create(Context, Prev, II); |
| break; |
| } |
| |
| case NestedNameSpecifier::Namespace: { |
| NamespaceDecl *NS = ReadDeclAs<NamespaceDecl>(F, Record, Idx); |
| NNS = NestedNameSpecifier::Create(Context, Prev, NS); |
| break; |
| } |
| |
| case NestedNameSpecifier::NamespaceAlias: { |
| NamespaceAliasDecl *Alias =ReadDeclAs<NamespaceAliasDecl>(F, Record, Idx); |
| NNS = NestedNameSpecifier::Create(Context, Prev, Alias); |
| break; |
| } |
| |
| case NestedNameSpecifier::TypeSpec: |
| case NestedNameSpecifier::TypeSpecWithTemplate: { |
| const Type *T = readType(F, Record, Idx).getTypePtrOrNull(); |
| if (!T) |
| return 0; |
| |
| bool Template = Record[Idx++]; |
| NNS = NestedNameSpecifier::Create(Context, Prev, Template, T); |
| break; |
| } |
| |
| case NestedNameSpecifier::Global: { |
| NNS = NestedNameSpecifier::GlobalSpecifier(Context); |
| // No associated value, and there can't be a prefix. |
| break; |
| } |
| } |
| Prev = NNS; |
| } |
| return NNS; |
| } |
| |
| NestedNameSpecifierLoc |
| ASTReader::ReadNestedNameSpecifierLoc(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx) { |
| unsigned N = Record[Idx++]; |
| NestedNameSpecifierLocBuilder Builder; |
| for (unsigned I = 0; I != N; ++I) { |
| NestedNameSpecifier::SpecifierKind Kind |
| = (NestedNameSpecifier::SpecifierKind)Record[Idx++]; |
| switch (Kind) { |
| case NestedNameSpecifier::Identifier: { |
| IdentifierInfo *II = GetIdentifierInfo(F, Record, Idx); |
| SourceRange Range = ReadSourceRange(F, Record, Idx); |
| Builder.Extend(Context, II, Range.getBegin(), Range.getEnd()); |
| break; |
| } |
| |
| case NestedNameSpecifier::Namespace: { |
| NamespaceDecl *NS = ReadDeclAs<NamespaceDecl>(F, Record, Idx); |
| SourceRange Range = ReadSourceRange(F, Record, Idx); |
| Builder.Extend(Context, NS, Range.getBegin(), Range.getEnd()); |
| break; |
| } |
| |
| case NestedNameSpecifier::NamespaceAlias: { |
| NamespaceAliasDecl *Alias =ReadDeclAs<NamespaceAliasDecl>(F, Record, Idx); |
| SourceRange Range = ReadSourceRange(F, Record, Idx); |
| Builder.Extend(Context, Alias, Range.getBegin(), Range.getEnd()); |
| break; |
| } |
| |
| case NestedNameSpecifier::TypeSpec: |
| case NestedNameSpecifier::TypeSpecWithTemplate: { |
| bool Template = Record[Idx++]; |
| TypeSourceInfo *T = GetTypeSourceInfo(F, Record, Idx); |
| if (!T) |
| return NestedNameSpecifierLoc(); |
| SourceLocation ColonColonLoc = ReadSourceLocation(F, Record, Idx); |
| |
| // FIXME: 'template' keyword location not saved anywhere, so we fake it. |
| Builder.Extend(Context, |
| Template? T->getTypeLoc().getBeginLoc() : SourceLocation(), |
| T->getTypeLoc(), ColonColonLoc); |
| break; |
| } |
| |
| case NestedNameSpecifier::Global: { |
| SourceLocation ColonColonLoc = ReadSourceLocation(F, Record, Idx); |
| Builder.MakeGlobal(Context, ColonColonLoc); |
| break; |
| } |
| } |
| } |
| |
| return Builder.getWithLocInContext(Context); |
| } |
| |
| SourceRange |
| ASTReader::ReadSourceRange(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx) { |
| SourceLocation beg = ReadSourceLocation(F, Record, Idx); |
| SourceLocation end = ReadSourceLocation(F, Record, Idx); |
| return SourceRange(beg, end); |
| } |
| |
| /// \brief Read an integral value |
| llvm::APInt ASTReader::ReadAPInt(const RecordData &Record, unsigned &Idx) { |
| unsigned BitWidth = Record[Idx++]; |
| unsigned NumWords = llvm::APInt::getNumWords(BitWidth); |
| llvm::APInt Result(BitWidth, NumWords, &Record[Idx]); |
| Idx += NumWords; |
| return Result; |
| } |
| |
| /// \brief Read a signed integral value |
| llvm::APSInt ASTReader::ReadAPSInt(const RecordData &Record, unsigned &Idx) { |
| bool isUnsigned = Record[Idx++]; |
| return llvm::APSInt(ReadAPInt(Record, Idx), isUnsigned); |
| } |
| |
| /// \brief Read a floating-point value |
| llvm::APFloat ASTReader::ReadAPFloat(const RecordData &Record, |
| const llvm::fltSemantics &Sem, |
| unsigned &Idx) { |
| return llvm::APFloat(Sem, ReadAPInt(Record, Idx)); |
| } |
| |
| // \brief Read a string |
| std::string ASTReader::ReadString(const RecordData &Record, unsigned &Idx) { |
| unsigned Len = Record[Idx++]; |
| std::string Result(Record.data() + Idx, Record.data() + Idx + Len); |
| Idx += Len; |
| return Result; |
| } |
| |
| VersionTuple ASTReader::ReadVersionTuple(const RecordData &Record, |
| unsigned &Idx) { |
| unsigned Major = Record[Idx++]; |
| unsigned Minor = Record[Idx++]; |
| unsigned Subminor = Record[Idx++]; |
| if (Minor == 0) |
| return VersionTuple(Major); |
| if (Subminor == 0) |
| return VersionTuple(Major, Minor - 1); |
| return VersionTuple(Major, Minor - 1, Subminor - 1); |
| } |
| |
| CXXTemporary *ASTReader::ReadCXXTemporary(ModuleFile &F, |
| const RecordData &Record, |
| unsigned &Idx) { |
| CXXDestructorDecl *Decl = ReadDeclAs<CXXDestructorDecl>(F, Record, Idx); |
| return CXXTemporary::Create(Context, Decl); |
| } |
| |
| DiagnosticBuilder ASTReader::Diag(unsigned DiagID) { |
| return Diag(SourceLocation(), DiagID); |
| } |
| |
| DiagnosticBuilder ASTReader::Diag(SourceLocation Loc, unsigned DiagID) { |
| return Diags.Report(Loc, DiagID); |
| } |
| |
| /// \brief Retrieve the identifier table associated with the |
| /// preprocessor. |
| IdentifierTable &ASTReader::getIdentifierTable() { |
| return PP.getIdentifierTable(); |
| } |
| |
| /// \brief Record that the given ID maps to the given switch-case |
| /// statement. |
| void ASTReader::RecordSwitchCaseID(SwitchCase *SC, unsigned ID) { |
| assert((*CurrSwitchCaseStmts)[ID] == 0 && |
| "Already have a SwitchCase with this ID"); |
| (*CurrSwitchCaseStmts)[ID] = SC; |
| } |
| |
| /// \brief Retrieve the switch-case statement with the given ID. |
| SwitchCase *ASTReader::getSwitchCaseWithID(unsigned ID) { |
| assert((*CurrSwitchCaseStmts)[ID] != 0 && "No SwitchCase with this ID"); |
| return (*CurrSwitchCaseStmts)[ID]; |
| } |
| |
| void ASTReader::ClearSwitchCaseIDs() { |
| CurrSwitchCaseStmts->clear(); |
| } |
| |
| void ASTReader::ReadComments() { |
| std::vector<RawComment *> Comments; |
| for (SmallVectorImpl<std::pair<BitstreamCursor, |
| serialization::ModuleFile *> >::iterator |
| I = CommentsCursors.begin(), |
| E = CommentsCursors.end(); |
| I != E; ++I) { |
| BitstreamCursor &Cursor = I->first; |
| serialization::ModuleFile &F = *I->second; |
| SavedStreamPosition SavedPosition(Cursor); |
| |
| RecordData Record; |
| while (true) { |
| llvm::BitstreamEntry Entry = |
| Cursor.advanceSkippingSubblocks(BitstreamCursor::AF_DontPopBlockAtEnd); |
| |
| switch (Entry.Kind) { |
| case llvm::BitstreamEntry::SubBlock: // Handled for us already. |
| case llvm::BitstreamEntry::Error: |
| Error("malformed block record in AST file"); |
| return; |
| case llvm::BitstreamEntry::EndBlock: |
| goto NextCursor; |
| case llvm::BitstreamEntry::Record: |
| // The interesting case. |
| break; |
| } |
| |
| // Read a record. |
| Record.clear(); |
| switch ((CommentRecordTypes)Cursor.readRecord(Entry.ID, Record)) { |
| case COMMENTS_RAW_COMMENT: { |
| unsigned Idx = 0; |
| SourceRange SR = ReadSourceRange(F, Record, Idx); |
| RawComment::CommentKind Kind = |
| (RawComment::CommentKind) Record[Idx++]; |
| bool IsTrailingComment = Record[Idx++]; |
| bool IsAlmostTrailingComment = Record[Idx++]; |
| Comments.push_back(new (Context) RawComment( |
| SR, Kind, IsTrailingComment, IsAlmostTrailingComment, |
| Context.getLangOpts().CommentOpts.ParseAllComments)); |
| break; |
| } |
| } |
| } |
| NextCursor:; |
| } |
| Context.Comments.addCommentsToFront(Comments); |
| } |
| |
| void ASTReader::finishPendingActions() { |
| while (!PendingIdentifierInfos.empty() || !PendingDeclChains.empty() || |
| !PendingMacroIDs.empty() || !PendingDeclContextInfos.empty()) { |
| // If any identifiers with corresponding top-level declarations have |
| // been loaded, load those declarations now. |
| llvm::DenseMap<IdentifierInfo *, SmallVector<Decl *, 2> > TopLevelDecls; |
| while (!PendingIdentifierInfos.empty()) { |
| // FIXME: std::move |
| IdentifierInfo *II = PendingIdentifierInfos.back().first; |
| SmallVector<uint32_t, 4> DeclIDs = PendingIdentifierInfos.back().second; |
| PendingIdentifierInfos.pop_back(); |
| |
| SetGloballyVisibleDecls(II, DeclIDs, &TopLevelDecls[II]); |
| } |
| |
| // Load pending declaration chains. |
| for (unsigned I = 0; I != PendingDeclChains.size(); ++I) { |
| loadPendingDeclChain(PendingDeclChains[I]); |
| PendingDeclChainsKnown.erase(PendingDeclChains[I]); |
| } |
| PendingDeclChains.clear(); |
| |
| // Make the most recent of the top-level declarations visible. |
| for (llvm::DenseMap<IdentifierInfo *, SmallVector<Decl *, 2> >::iterator |
| TLD = TopLevelDecls.begin(), TLDEnd = TopLevelDecls.end(); |
| TLD != TLDEnd; ++TLD) { |
| IdentifierInfo *II = TLD->first; |
| for (unsigned I = 0, N = TLD->second.size(); I != N; ++I) { |
| pushExternalDeclIntoScope(cast<NamedDecl>(TLD->second[I]), II); |
| } |
| } |
| |
| // Load any pending macro definitions. |
| for (unsigned I = 0; I != PendingMacroIDs.size(); ++I) { |
| IdentifierInfo *II = PendingMacroIDs.begin()[I].first; |
| SmallVector<PendingMacroInfo, 2> GlobalIDs; |
| GlobalIDs.swap(PendingMacroIDs.begin()[I].second); |
| // Initialize the macro history from chained-PCHs ahead of module imports. |
| for (unsigned IDIdx = 0, NumIDs = GlobalIDs.size(); IDIdx != NumIDs; |
| ++IDIdx) { |
| const PendingMacroInfo &Info = GlobalIDs[IDIdx]; |
| if (Info.M->Kind != MK_Module) |
| resolvePendingMacro(II, Info); |
| } |
| // Handle module imports. |
| for (unsigned IDIdx = 0, NumIDs = GlobalIDs.size(); IDIdx != NumIDs; |
| ++IDIdx) { |
| const PendingMacroInfo &Info = GlobalIDs[IDIdx]; |
| if (Info.M->Kind == MK_Module) |
| resolvePendingMacro(II, Info); |
| } |
| } |
| PendingMacroIDs.clear(); |
| |
| // Wire up the DeclContexts for Decls that we delayed setting until |
| // recursive loading is completed. |
| while (!PendingDeclContextInfos.empty()) { |
| PendingDeclContextInfo Info = PendingDeclContextInfos.front(); |
| PendingDeclContextInfos.pop_front(); |
| DeclContext *SemaDC = cast<DeclContext>(GetDecl(Info.SemaDC)); |
| DeclContext *LexicalDC = cast<DeclContext>(GetDecl(Info.LexicalDC)); |
| Info.D->setDeclContextsImpl(SemaDC, LexicalDC, getContext()); |
| } |
| } |
| |
| // If we deserialized any C++ or Objective-C class definitions, any |
| // Objective-C protocol definitions, or any redeclarable templates, make sure |
| // that all redeclarations point to the definitions. Note that this can only |
| // happen now, after the redeclaration chains have been fully wired. |
| for (llvm::SmallPtrSet<Decl *, 4>::iterator D = PendingDefinitions.begin(), |
| DEnd = PendingDefinitions.end(); |
| D != DEnd; ++D) { |
| if (TagDecl *TD = dyn_cast<TagDecl>(*D)) { |
| if (const TagType *TagT = dyn_cast<TagType>(TD->TypeForDecl)) { |
| // Make sure that the TagType points at the definition. |
| const_cast<TagType*>(TagT)->decl = TD; |
| } |
| |
| if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(*D)) { |
| for (CXXRecordDecl::redecl_iterator R = RD->redecls_begin(), |
| REnd = RD->redecls_end(); |
| R != REnd; ++R) |
| cast<CXXRecordDecl>(*R)->DefinitionData = RD->DefinitionData; |
| |
| } |
| |
| continue; |
| } |
| |
| if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(*D)) { |
| // Make sure that the ObjCInterfaceType points at the definition. |
| const_cast<ObjCInterfaceType *>(cast<ObjCInterfaceType>(ID->TypeForDecl)) |
| ->Decl = ID; |
| |
| for (ObjCInterfaceDecl::redecl_iterator R = ID->redecls_begin(), |
| REnd = ID->redecls_end(); |
| R != REnd; ++R) |
| R->Data = ID->Data; |
| |
| continue; |
| } |
| |
| if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(*D)) { |
| for (ObjCProtocolDecl::redecl_iterator R = PD->redecls_begin(), |
| REnd = PD->redecls_end(); |
| R != REnd; ++R) |
| R->Data = PD->Data; |
| |
| continue; |
| } |
| |
| RedeclarableTemplateDecl *RTD |
| = cast<RedeclarableTemplateDecl>(*D)->getCanonicalDecl(); |
| for (RedeclarableTemplateDecl::redecl_iterator R = RTD->redecls_begin(), |
| REnd = RTD->redecls_end(); |
| R != REnd; ++R) |
| R->Common = RTD->Common; |
| } |
| PendingDefinitions.clear(); |
| |
| // Load the bodies of any functions or methods we've encountered. We do |
| // this now (delayed) so that we can be sure that the declaration chains |
| // have been fully wired up. |
| for (PendingBodiesMap::iterator PB = PendingBodies.begin(), |
| PBEnd = PendingBodies.end(); |
| PB != PBEnd; ++PB) { |
| if (FunctionDecl *FD = dyn_cast<FunctionDecl>(PB->first)) { |
| // FIXME: Check for =delete/=default? |
| // FIXME: Complain about ODR violations here? |
| if (!getContext().getLangOpts().Modules || !FD->hasBody()) |
| FD->setLazyBody(PB->second); |
| continue; |
| } |
| |
| ObjCMethodDecl *MD = cast<ObjCMethodDecl>(PB->first); |
| if (!getContext().getLangOpts().Modules || !MD->hasBody()) |
| MD->setLazyBody(PB->second); |
| } |
| PendingBodies.clear(); |
| } |
| |
| void ASTReader::FinishedDeserializing() { |
| assert(NumCurrentElementsDeserializing && |
| "FinishedDeserializing not paired with StartedDeserializing"); |
| if (NumCurrentElementsDeserializing == 1) { |
| // We decrease NumCurrentElementsDeserializing only after pending actions |
| // are finished, to avoid recursively re-calling finishPendingActions(). |
| finishPendingActions(); |
| } |
| --NumCurrentElementsDeserializing; |
| |
| if (NumCurrentElementsDeserializing == 0 && |
| Consumer && !PassingDeclsToConsumer) { |
| // Guard variable to avoid recursively redoing the process of passing |
| // decls to consumer. |
| SaveAndRestore<bool> GuardPassingDeclsToConsumer(PassingDeclsToConsumer, |
| true); |
| |
| while (!InterestingDecls.empty()) { |
| // We are not in recursive loading, so it's safe to pass the "interesting" |
| // decls to the consumer. |
| Decl *D = InterestingDecls.front(); |
| InterestingDecls.pop_front(); |
| PassInterestingDeclToConsumer(D); |
| } |
| } |
| } |
| |
| void ASTReader::pushExternalDeclIntoScope(NamedDecl *D, DeclarationName Name) { |
| D = cast<NamedDecl>(D->getMostRecentDecl()); |
| |
| if (SemaObj->IdResolver.tryAddTopLevelDecl(D, Name) && SemaObj->TUScope) { |
| SemaObj->TUScope->AddDecl(D); |
| } else if (SemaObj->TUScope) { |
| // Adding the decl to IdResolver may have failed because it was already in |
| // (even though it was not added in scope). If it is already in, make sure |
| // it gets in the scope as well. |
| if (std::find(SemaObj->IdResolver.begin(Name), |
| SemaObj->IdResolver.end(), D) != SemaObj->IdResolver.end()) |
| SemaObj->TUScope->AddDecl(D); |
| } |
| } |
| |
| ASTReader::ASTReader(Preprocessor &PP, ASTContext &Context, |
| StringRef isysroot, bool DisableValidation, |
| bool AllowASTWithCompilerErrors, bool UseGlobalIndex) |
| : Listener(new PCHValidator(PP, *this)), DeserializationListener(0), |
| SourceMgr(PP.getSourceManager()), FileMgr(PP.getFileManager()), |
| Diags(PP.getDiagnostics()), SemaObj(0), PP(PP), Context(Context), |
| Consumer(0), ModuleMgr(PP.getFileManager()), |
| isysroot(isysroot), DisableValidation(DisableValidation), |
| AllowASTWithCompilerErrors(AllowASTWithCompilerErrors), |
| UseGlobalIndex(UseGlobalIndex), TriedLoadingGlobalIndex(false), |
| CurrentGeneration(0), CurrSwitchCaseStmts(&SwitchCaseStmts), |
| NumSLocEntriesRead(0), TotalNumSLocEntries(0), |
| NumStatementsRead(0), TotalNumStatements(0), NumMacrosRead(0), |
| TotalNumMacros(0), NumIdentifierLookups(0), NumIdentifierLookupHits(0), |
| NumSelectorsRead(0), NumMethodPoolEntriesRead(0), |
| NumMethodPoolLookups(0), NumMethodPoolHits(0), |
| NumMethodPoolTableLookups(0), NumMethodPoolTableHits(0), |
| TotalNumMethodPoolEntries(0), |
| NumLexicalDeclContextsRead(0), TotalLexicalDeclContexts(0), |
| NumVisibleDeclContextsRead(0), TotalVisibleDeclContexts(0), |
| TotalModulesSizeInBits(0), NumCurrentElementsDeserializing(0), |
| PassingDeclsToConsumer(false), |
| NumCXXBaseSpecifiersLoaded(0) |
| { |
| SourceMgr.setExternalSLocEntrySource(this); |
| } |
| |
| ASTReader::~ASTReader() { |
| for (DeclContextVisibleUpdatesPending::iterator |
| I = PendingVisibleUpdates.begin(), |
| E = PendingVisibleUpdates.end(); |
| I != E; ++I) { |
| for (DeclContextVisibleUpdates::iterator J = I->second.begin(), |
| F = I->second.end(); |
| J != F; ++J) |
| delete J->first; |
| } |
| } |