| //===--- ASTReader.h - AST File Reader --------------------------*- C++ -*-===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_FRONTEND_AST_READER_H |
| #define LLVM_CLANG_FRONTEND_AST_READER_H |
| |
| #include "clang/Serialization/ASTBitCodes.h" |
| #include "clang/Serialization/ContinuousRangeMap.h" |
| #include "clang/Serialization/Module.h" |
| #include "clang/Serialization/ModuleManager.h" |
| #include "clang/Sema/ExternalSemaSource.h" |
| #include "clang/AST/DeclarationName.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/AST/TemplateBase.h" |
| #include "clang/Lex/ExternalPreprocessorSource.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Lex/PreprocessingRecord.h" |
| #include "clang/Basic/Diagnostic.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/FileSystemOptions.h" |
| #include "clang/Basic/IdentifierTable.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "llvm/ADT/APFloat.h" |
| #include "llvm/ADT/APInt.h" |
| #include "llvm/ADT/APSInt.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/Bitcode/BitstreamReader.h" |
| #include "llvm/Support/DataTypes.h" |
| #include <deque> |
| #include <map> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| namespace llvm { |
| class MemoryBuffer; |
| } |
| |
| namespace clang { |
| |
| class AddrLabelExpr; |
| class ASTConsumer; |
| class ASTContext; |
| class ASTIdentifierIterator; |
| class ASTUnit; // FIXME: Layering violation and egregious hack. |
| class Attr; |
| class Decl; |
| class DeclContext; |
| class NestedNameSpecifier; |
| class CXXBaseSpecifier; |
| class CXXConstructorDecl; |
| class CXXCtorInitializer; |
| class GotoStmt; |
| class MacroDefinition; |
| class NamedDecl; |
| class OpaqueValueExpr; |
| class Preprocessor; |
| class Sema; |
| class SwitchCase; |
| class ASTDeserializationListener; |
| class ASTWriter; |
| class ASTReader; |
| class ASTDeclReader; |
| class ASTStmtReader; |
| class TypeLocReader; |
| struct HeaderFileInfo; |
| class VersionTuple; |
| |
| struct PCHPredefinesBlock { |
| /// \brief The file ID for this predefines buffer in a PCH file. |
| FileID BufferID; |
| |
| /// \brief This predefines buffer in a PCH file. |
| StringRef Data; |
| }; |
| typedef SmallVector<PCHPredefinesBlock, 2> PCHPredefinesBlocks; |
| |
| /// \brief Abstract interface for callback invocations by the ASTReader. |
| /// |
| /// While reading an AST file, the ASTReader will call the methods of the |
| /// listener to pass on specific information. Some of the listener methods can |
| /// return true to indicate to the ASTReader that the information (and |
| /// consequently the AST file) is invalid. |
| class ASTReaderListener { |
| public: |
| virtual ~ASTReaderListener(); |
| |
| /// \brief Receives the language options. |
| /// |
| /// \returns true to indicate the options are invalid or false otherwise. |
| virtual bool ReadLanguageOptions(const LangOptions &LangOpts) { |
| return false; |
| } |
| |
| /// \brief Receives the target triple. |
| /// |
| /// \returns true to indicate the target triple is invalid or false otherwise. |
| virtual bool ReadTargetTriple(StringRef Triple) { |
| return false; |
| } |
| |
| /// \brief Receives the contents of the predefines buffer. |
| /// |
| /// \param Buffers Information about the predefines buffers. |
| /// |
| /// \param OriginalFileName The original file name for the AST file, which |
| /// will appear as an entry in the predefines buffer. |
| /// |
| /// \param SuggestedPredefines If necessary, additional definitions are added |
| /// here. |
| /// |
| /// \returns true to indicate the predefines are invalid or false otherwise. |
| virtual bool ReadPredefinesBuffer(const PCHPredefinesBlocks &Buffers, |
| StringRef OriginalFileName, |
| std::string &SuggestedPredefines, |
| FileManager &FileMgr) { |
| return false; |
| } |
| |
| /// \brief Receives a HeaderFileInfo entry. |
| virtual void ReadHeaderFileInfo(const HeaderFileInfo &HFI, unsigned ID) {} |
| |
| /// \brief Receives __COUNTER__ value. |
| virtual void ReadCounter(unsigned Value) {} |
| }; |
| |
| /// \brief ASTReaderListener implementation to validate the information of |
| /// the PCH file against an initialized Preprocessor. |
| class PCHValidator : public ASTReaderListener { |
| Preprocessor &PP; |
| ASTReader &Reader; |
| |
| unsigned NumHeaderInfos; |
| |
| public: |
| PCHValidator(Preprocessor &PP, ASTReader &Reader) |
| : PP(PP), Reader(Reader), NumHeaderInfos(0) {} |
| |
| virtual bool ReadLanguageOptions(const LangOptions &LangOpts); |
| virtual bool ReadTargetTriple(StringRef Triple); |
| virtual bool ReadPredefinesBuffer(const PCHPredefinesBlocks &Buffers, |
| StringRef OriginalFileName, |
| std::string &SuggestedPredefines, |
| FileManager &FileMgr); |
| virtual void ReadHeaderFileInfo(const HeaderFileInfo &HFI, unsigned ID); |
| virtual void ReadCounter(unsigned Value); |
| |
| private: |
| void Error(const char *Msg); |
| }; |
| |
| namespace serialization { |
| |
| class ReadMethodPoolVisitor; |
| |
| namespace reader { |
| class ASTIdentifierLookupTrait; |
| } |
| |
| } // end namespace serialization |
| |
| /// \brief Reads an AST files chain containing the contents of a translation |
| /// unit. |
| /// |
| /// The ASTReader class reads bitstreams (produced by the ASTWriter |
| /// class) containing the serialized representation of a given |
| /// abstract syntax tree and its supporting data structures. An |
| /// instance of the ASTReader can be attached to an ASTContext object, |
| /// which will provide access to the contents of the AST files. |
| /// |
| /// The AST reader provides lazy de-serialization of declarations, as |
| /// required when traversing the AST. Only those AST nodes that are |
| /// actually required will be de-serialized. |
| class ASTReader |
| : public ExternalPreprocessorSource, |
| public ExternalPreprocessingRecordSource, |
| public ExternalHeaderFileInfoSource, |
| public ExternalSemaSource, |
| public IdentifierInfoLookup, |
| public ExternalIdentifierLookup, |
| public ExternalSLocEntrySource |
| { |
| public: |
| enum ASTReadResult { Success, Failure, IgnorePCH }; |
| /// \brief Types of AST files. |
| friend class PCHValidator; |
| friend class ASTDeclReader; |
| friend class ASTStmtReader; |
| friend class ASTIdentifierIterator; |
| friend class serialization::reader::ASTIdentifierLookupTrait; |
| friend class TypeLocReader; |
| friend class ASTWriter; |
| friend class ASTUnit; // ASTUnit needs to remap source locations. |
| friend class serialization::ReadMethodPoolVisitor; |
| |
| typedef serialization::ModuleFile ModuleFile; |
| typedef serialization::ModuleKind ModuleKind; |
| typedef serialization::ModuleManager ModuleManager; |
| |
| typedef ModuleManager::ModuleIterator ModuleIterator; |
| typedef ModuleManager::ModuleConstIterator ModuleConstIterator; |
| typedef ModuleManager::ModuleReverseIterator ModuleReverseIterator; |
| |
| private: |
| /// \brief The receiver of some callbacks invoked by ASTReader. |
| llvm::OwningPtr<ASTReaderListener> Listener; |
| |
| /// \brief The receiver of deserialization events. |
| ASTDeserializationListener *DeserializationListener; |
| |
| SourceManager &SourceMgr; |
| FileManager &FileMgr; |
| DiagnosticsEngine &Diags; |
| |
| /// \brief The semantic analysis object that will be processing the |
| /// AST files and the translation unit that uses it. |
| Sema *SemaObj; |
| |
| /// \brief The preprocessor that will be loading the source file. |
| Preprocessor &PP; |
| |
| /// \brief The AST context into which we'll read the AST files. |
| ASTContext &Context; |
| |
| /// \brief The AST consumer. |
| ASTConsumer *Consumer; |
| |
| /// \brief The module manager which manages modules and their dependencies |
| ModuleManager ModuleMgr; |
| |
| /// \brief A map of global bit offsets to the module that stores entities |
| /// at those bit offsets. |
| ContinuousRangeMap<uint64_t, ModuleFile*, 4> GlobalBitOffsetsMap; |
| |
| /// \brief A map of negated SLocEntryIDs to the modules containing them. |
| ContinuousRangeMap<unsigned, ModuleFile*, 64> GlobalSLocEntryMap; |
| |
| typedef ContinuousRangeMap<unsigned, ModuleFile*, 64> GlobalSLocOffsetMapType; |
| |
| /// \brief A map of reversed (SourceManager::MaxLoadedOffset - SLocOffset) |
| /// SourceLocation offsets to the modules containing them. |
| GlobalSLocOffsetMapType GlobalSLocOffsetMap; |
| |
| /// \brief Types that have already been loaded from the chain. |
| /// |
| /// When the pointer at index I is non-NULL, the type with |
| /// ID = (I + 1) << FastQual::Width has already been loaded |
| std::vector<QualType> TypesLoaded; |
| |
| typedef ContinuousRangeMap<serialization::TypeID, ModuleFile *, 4> |
| GlobalTypeMapType; |
| |
| /// \brief Mapping from global type IDs to the module in which the |
| /// type resides along with the offset that should be added to the |
| /// global type ID to produce a local ID. |
| GlobalTypeMapType GlobalTypeMap; |
| |
| /// \brief Declarations that have already been loaded from the chain. |
| /// |
| /// When the pointer at index I is non-NULL, the declaration with ID |
| /// = I + 1 has already been loaded. |
| std::vector<Decl *> DeclsLoaded; |
| |
| typedef ContinuousRangeMap<serialization::DeclID, ModuleFile *, 4> |
| GlobalDeclMapType; |
| |
| /// \brief Mapping from global declaration IDs to the module in which the |
| /// declaration resides. |
| GlobalDeclMapType GlobalDeclMap; |
| |
| typedef std::pair<ModuleFile *, uint64_t> FileOffset; |
| typedef SmallVector<FileOffset, 2> FileOffsetsTy; |
| typedef llvm::DenseMap<serialization::DeclID, FileOffsetsTy> |
| DeclUpdateOffsetsMap; |
| |
| /// \brief Declarations that have modifications residing in a later file |
| /// in the chain. |
| DeclUpdateOffsetsMap DeclUpdateOffsets; |
| |
| struct ReplacedDeclInfo { |
| ModuleFile *Mod; |
| uint64_t Offset; |
| unsigned RawLoc; |
| |
| ReplacedDeclInfo() : Mod(0), Offset(0), RawLoc(0) {} |
| ReplacedDeclInfo(ModuleFile *Mod, uint64_t Offset, unsigned RawLoc) |
| : Mod(Mod), Offset(Offset), RawLoc(RawLoc) {} |
| }; |
| |
| typedef llvm::DenseMap<serialization::DeclID, ReplacedDeclInfo> |
| DeclReplacementMap; |
| /// \brief Declarations that have been replaced in a later file in the chain. |
| DeclReplacementMap ReplacedDecls; |
| |
| struct FileDeclsInfo { |
| ModuleFile *Mod; |
| ArrayRef<serialization::LocalDeclID> Decls; |
| |
| FileDeclsInfo() : Mod(0) {} |
| FileDeclsInfo(ModuleFile *Mod, ArrayRef<serialization::LocalDeclID> Decls) |
| : Mod(Mod), Decls(Decls) {} |
| }; |
| |
| /// \brief Map from a FileID to the file-level declarations that it contains. |
| llvm::DenseMap<FileID, FileDeclsInfo> FileDeclIDs; |
| |
| // Updates for visible decls can occur for other contexts than just the |
| // TU, and when we read those update records, the actual context will not |
| // be available yet (unless it's the TU), so have this pending map using the |
| // ID as a key. It will be realized when the context is actually loaded. |
| typedef SmallVector<std::pair<void *, ModuleFile*>, 1> DeclContextVisibleUpdates; |
| typedef llvm::DenseMap<serialization::DeclID, DeclContextVisibleUpdates> |
| DeclContextVisibleUpdatesPending; |
| |
| /// \brief Updates to the visible declarations of declaration contexts that |
| /// haven't been loaded yet. |
| DeclContextVisibleUpdatesPending PendingVisibleUpdates; |
| |
| typedef SmallVector<CXXRecordDecl *, 4> ForwardRefs; |
| typedef llvm::DenseMap<const CXXRecordDecl *, ForwardRefs> |
| PendingForwardRefsMap; |
| /// \brief Forward references that have a definition but the definition decl |
| /// is still initializing. When the definition gets read it will update |
| /// the DefinitionData pointer of all pending references. |
| PendingForwardRefsMap PendingForwardRefs; |
| |
| typedef llvm::DenseMap<serialization::DeclID, serialization::DeclID> |
| FirstLatestDeclIDMap; |
| /// \brief Map of first declarations from a chained PCH that point to the |
| /// most recent declarations in another AST file. |
| FirstLatestDeclIDMap FirstLatestDeclIDs; |
| |
| /// \brief Set of ObjC interfaces that have categories chained to them in |
| /// other modules. |
| llvm::DenseSet<serialization::GlobalDeclID> ObjCChainedCategoriesInterfaces; |
| |
| /// \brief Read the records that describe the contents of declcontexts. |
| bool ReadDeclContextStorage(ModuleFile &M, |
| llvm::BitstreamCursor &Cursor, |
| const std::pair<uint64_t, uint64_t> &Offsets, |
| serialization::DeclContextInfo &Info); |
| |
| /// \brief A vector containing identifiers that have already been |
| /// loaded. |
| /// |
| /// If the pointer at index I is non-NULL, then it refers to the |
| /// IdentifierInfo for the identifier with ID=I+1 that has already |
| /// been loaded. |
| std::vector<IdentifierInfo *> IdentifiersLoaded; |
| |
| typedef ContinuousRangeMap<serialization::IdentID, ModuleFile *, 4> |
| GlobalIdentifierMapType; |
| |
| /// \brief Mapping from global identifer IDs to the module in which the |
| /// identifier resides along with the offset that should be added to the |
| /// global identifier ID to produce a local ID. |
| GlobalIdentifierMapType GlobalIdentifierMap; |
| |
| /// \brief A vector containing selectors that have already been loaded. |
| /// |
| /// This vector is indexed by the Selector ID (-1). NULL selector |
| /// entries indicate that the particular selector ID has not yet |
| /// been loaded. |
| SmallVector<Selector, 16> SelectorsLoaded; |
| |
| typedef ContinuousRangeMap<serialization::SelectorID, ModuleFile *, 4> |
| GlobalSelectorMapType; |
| |
| /// \brief Mapping from global selector IDs to the module in which the |
| /// selector resides along with the offset that should be added to the |
| /// global selector ID to produce a local ID. |
| GlobalSelectorMapType GlobalSelectorMap; |
| |
| /// \brief Mapping from identifiers that represent macros whose definitions |
| /// have not yet been deserialized to the global offset where the macro |
| /// record resides. |
| llvm::DenseMap<IdentifierInfo *, uint64_t> UnreadMacroRecordOffsets; |
| |
| typedef ContinuousRangeMap<unsigned, ModuleFile *, 4> |
| GlobalPreprocessedEntityMapType; |
| |
| /// \brief Mapping from global preprocessing entity IDs to the module in |
| /// which the preprocessed entity resides along with the offset that should be |
| /// added to the global preprocessing entitiy ID to produce a local ID. |
| GlobalPreprocessedEntityMapType GlobalPreprocessedEntityMap; |
| |
| /// \name CodeGen-relevant special data |
| /// \brief Fields containing data that is relevant to CodeGen. |
| //@{ |
| |
| /// \brief The IDs of all declarations that fulfill the criteria of |
| /// "interesting" decls. |
| /// |
| /// This contains the data loaded from all EXTERNAL_DEFINITIONS blocks in the |
| /// chain. The referenced declarations are deserialized and passed to the |
| /// consumer eagerly. |
| SmallVector<uint64_t, 16> ExternalDefinitions; |
| |
| /// \brief The IDs of all tentative definitions stored in the the chain. |
| /// |
| /// Sema keeps track of all tentative definitions in a TU because it has to |
| /// complete them and pass them on to CodeGen. Thus, tentative definitions in |
| /// the PCH chain must be eagerly deserialized. |
| SmallVector<uint64_t, 16> TentativeDefinitions; |
| |
| /// \brief The IDs of all CXXRecordDecls stored in the chain whose VTables are |
| /// used. |
| /// |
| /// CodeGen has to emit VTables for these records, so they have to be eagerly |
| /// deserialized. |
| SmallVector<uint64_t, 64> VTableUses; |
| |
| /// \brief A snapshot of the pending instantiations in the chain. |
| /// |
| /// This record tracks the instantiations that Sema has to perform at the |
| /// end of the TU. It consists of a pair of values for every pending |
| /// instantiation where the first value is the ID of the decl and the second |
| /// is the instantiation location. |
| SmallVector<uint64_t, 64> PendingInstantiations; |
| |
| //@} |
| |
| /// \name DiagnosticsEngine-relevant special data |
| /// \brief Fields containing data that is used for generating diagnostics |
| //@{ |
| |
| /// \brief A snapshot of Sema's unused file-scoped variable tracking, for |
| /// generating warnings. |
| SmallVector<uint64_t, 16> UnusedFileScopedDecls; |
| |
| /// \brief A list of all the delegating constructors we've seen, to diagnose |
| /// cycles. |
| SmallVector<uint64_t, 4> DelegatingCtorDecls; |
| |
| /// \brief Method selectors used in a @selector expression. Used for |
| /// implementation of -Wselector. |
| SmallVector<uint64_t, 64> ReferencedSelectorsData; |
| |
| /// \brief A snapshot of Sema's weak undeclared identifier tracking, for |
| /// generating warnings. |
| SmallVector<uint64_t, 64> WeakUndeclaredIdentifiers; |
| |
| /// \brief The IDs of type aliases for ext_vectors that exist in the chain. |
| /// |
| /// Used by Sema for finding sugared names for ext_vectors in diagnostics. |
| SmallVector<uint64_t, 4> ExtVectorDecls; |
| |
| //@} |
| |
| /// \name Sema-relevant special data |
| /// \brief Fields containing data that is used for semantic analysis |
| //@{ |
| |
| /// \brief The IDs of all locally scoped external decls in the chain. |
| /// |
| /// Sema tracks these to validate that the types are consistent across all |
| /// local external declarations. |
| SmallVector<uint64_t, 16> LocallyScopedExternalDecls; |
| |
| /// \brief The IDs of all dynamic class declarations in the chain. |
| /// |
| /// Sema tracks these because it checks for the key functions being defined |
| /// at the end of the TU, in which case it directs CodeGen to emit the VTable. |
| SmallVector<uint64_t, 16> DynamicClasses; |
| |
| /// \brief The IDs of the declarations Sema stores directly. |
| /// |
| /// Sema tracks a few important decls, such as namespace std, directly. |
| SmallVector<uint64_t, 4> SemaDeclRefs; |
| |
| /// \brief The IDs of the types ASTContext stores directly. |
| /// |
| /// The AST context tracks a few important types, such as va_list, directly. |
| SmallVector<uint64_t, 16> SpecialTypes; |
| |
| /// \brief The IDs of CUDA-specific declarations ASTContext stores directly. |
| /// |
| /// The AST context tracks a few important decls, currently cudaConfigureCall, |
| /// directly. |
| SmallVector<uint64_t, 2> CUDASpecialDeclRefs; |
| |
| /// \brief The floating point pragma option settings. |
| SmallVector<uint64_t, 1> FPPragmaOptions; |
| |
| /// \brief The OpenCL extension settings. |
| SmallVector<uint64_t, 1> OpenCLExtensions; |
| |
| /// \brief A list of the namespaces we've seen. |
| SmallVector<uint64_t, 4> KnownNamespaces; |
| |
| //@} |
| |
| /// \brief The original file name that was used to build the primary AST file, |
| /// which may have been modified for relocatable-pch support. |
| std::string OriginalFileName; |
| |
| /// \brief The actual original file name that was used to build the primary |
| /// AST file. |
| std::string ActualOriginalFileName; |
| |
| /// \brief The file ID for the original file that was used to build the |
| /// primary AST file. |
| FileID OriginalFileID; |
| |
| /// \brief The directory that the PCH was originally created in. Used to |
| /// allow resolving headers even after headers+PCH was moved to a new path. |
| std::string OriginalDir; |
| |
| /// \brief The directory that the PCH we are reading is stored in. |
| std::string CurrentDir; |
| |
| /// \brief Whether this precompiled header is a relocatable PCH file. |
| bool RelocatablePCH; |
| |
| /// \brief The system include root to be used when loading the |
| /// precompiled header. |
| std::string isysroot; |
| |
| /// \brief Whether to disable the normal validation performed on precompiled |
| /// headers when they are loaded. |
| bool DisableValidation; |
| |
| /// \brief Whether to disable the use of stat caches in AST files. |
| bool DisableStatCache; |
| |
| /// \brief Mapping from switch-case IDs in the chain to switch-case statements |
| /// |
| /// Statements usually don't have IDs, but switch cases need them, so that the |
| /// switch statement can refer to them. |
| std::map<unsigned, SwitchCase *> SwitchCaseStmts; |
| |
| /// \brief Mapping from opaque value IDs to OpaqueValueExprs. |
| std::map<unsigned, OpaqueValueExpr*> OpaqueValueExprs; |
| |
| /// \brief The number of stat() calls that hit/missed the stat |
| /// cache. |
| unsigned NumStatHits, NumStatMisses; |
| |
| /// \brief The number of source location entries de-serialized from |
| /// the PCH file. |
| unsigned NumSLocEntriesRead; |
| |
| /// \brief The number of source location entries in the chain. |
| unsigned TotalNumSLocEntries; |
| |
| /// \brief The number of statements (and expressions) de-serialized |
| /// from the chain. |
| unsigned NumStatementsRead; |
| |
| /// \brief The total number of statements (and expressions) stored |
| /// in the chain. |
| unsigned TotalNumStatements; |
| |
| /// \brief The number of macros de-serialized from the chain. |
| unsigned NumMacrosRead; |
| |
| /// \brief The total number of macros stored in the chain. |
| unsigned TotalNumMacros; |
| |
| /// \brief The number of selectors that have been read. |
| unsigned NumSelectorsRead; |
| |
| /// \brief The number of method pool entries that have been read. |
| unsigned NumMethodPoolEntriesRead; |
| |
| /// \brief The number of times we have looked up a selector in the method |
| /// pool and not found anything interesting. |
| unsigned NumMethodPoolMisses; |
| |
| /// \brief The total number of method pool entries in the selector table. |
| unsigned TotalNumMethodPoolEntries; |
| |
| /// Number of lexical decl contexts read/total. |
| unsigned NumLexicalDeclContextsRead, TotalLexicalDeclContexts; |
| |
| /// Number of visible decl contexts read/total. |
| unsigned NumVisibleDeclContextsRead, TotalVisibleDeclContexts; |
| |
| /// Total size of modules, in bits, currently loaded |
| uint64_t TotalModulesSizeInBits; |
| |
| /// \brief Number of Decl/types that are currently deserializing. |
| unsigned NumCurrentElementsDeserializing; |
| |
| /// Number of CXX base specifiers currently loaded |
| unsigned NumCXXBaseSpecifiersLoaded; |
| |
| /// \brief An IdentifierInfo that has been loaded but whose top-level |
| /// declarations of the same name have not (yet) been loaded. |
| struct PendingIdentifierInfo { |
| IdentifierInfo *II; |
| SmallVector<uint32_t, 4> DeclIDs; |
| }; |
| |
| /// \brief The set of identifiers that were read while the AST reader was |
| /// (recursively) loading declarations. |
| /// |
| /// The declarations on the identifier chain for these identifiers will be |
| /// loaded once the recursive loading has completed. |
| std::deque<PendingIdentifierInfo> PendingIdentifierInfos; |
| |
| /// \brief Contains declarations and definitions that will be |
| /// "interesting" to the ASTConsumer, when we get that AST consumer. |
| /// |
| /// "Interesting" declarations are those that have data that may |
| /// need to be emitted, such as inline function definitions or |
| /// Objective-C protocols. |
| std::deque<Decl *> InterestingDecls; |
| |
| /// \brief We delay loading of the previous declaration chain to avoid |
| /// deeply nested calls when there are many redeclarations. |
| std::deque<std::pair<Decl *, serialization::DeclID> > PendingPreviousDecls; |
| |
| /// \brief We delay loading the chain of objc categories after recursive |
| /// loading of declarations is finished. |
| std::vector<std::pair<ObjCInterfaceDecl *, serialization::DeclID> > |
| PendingChainedObjCCategories; |
| |
| /// \brief Ready to load the previous declaration of the given Decl. |
| void loadAndAttachPreviousDecl(Decl *D, serialization::DeclID ID); |
| |
| /// \brief When reading a Stmt tree, Stmt operands are placed in this stack. |
| SmallVector<Stmt *, 16> StmtStack; |
| |
| /// \brief What kind of records we are reading. |
| enum ReadingKind { |
| Read_Decl, Read_Type, Read_Stmt |
| }; |
| |
| /// \brief What kind of records we are reading. |
| ReadingKind ReadingKind; |
| |
| /// \brief RAII object to change the reading kind. |
| class ReadingKindTracker { |
| ASTReader &Reader; |
| enum ReadingKind PrevKind; |
| |
| ReadingKindTracker(const ReadingKindTracker&); // do not implement |
| ReadingKindTracker &operator=(const ReadingKindTracker&);// do not implement |
| |
| public: |
| ReadingKindTracker(enum ReadingKind newKind, ASTReader &reader) |
| : Reader(reader), PrevKind(Reader.ReadingKind) { |
| Reader.ReadingKind = newKind; |
| } |
| |
| ~ReadingKindTracker() { Reader.ReadingKind = PrevKind; } |
| }; |
| |
| /// \brief All predefines buffers in the chain, to be treated as if |
| /// concatenated. |
| PCHPredefinesBlocks PCHPredefinesBuffers; |
| |
| /// \brief Suggested contents of the predefines buffer, after this |
| /// PCH file has been processed. |
| /// |
| /// In most cases, this string will be empty, because the predefines |
| /// buffer computed to build the PCH file will be identical to the |
| /// predefines buffer computed from the command line. However, when |
| /// there are differences that the PCH reader can work around, this |
| /// predefines buffer may contain additional definitions. |
| std::string SuggestedPredefines; |
| |
| /// \brief Reads a statement from the specified cursor. |
| Stmt *ReadStmtFromStream(ModuleFile &F); |
| |
| /// \brief Get a FileEntry out of stored-in-PCH filename, making sure we take |
| /// into account all the necessary relocations. |
| const FileEntry *getFileEntry(StringRef filename); |
| |
| void MaybeAddSystemRootToFilename(std::string &Filename); |
| |
| ASTReadResult ReadASTCore(StringRef FileName, ModuleKind Type, |
| ModuleFile *ImportedBy); |
| ASTReadResult ReadASTBlock(ModuleFile &F); |
| bool CheckPredefinesBuffers(); |
| bool ParseLineTable(ModuleFile &F, SmallVectorImpl<uint64_t> &Record); |
| ASTReadResult ReadSourceManagerBlock(ModuleFile &F); |
| ASTReadResult ReadSLocEntryRecord(int ID); |
| llvm::BitstreamCursor &SLocCursorForID(int ID); |
| SourceLocation getImportLocation(ModuleFile *F); |
| ASTReadResult ReadSubmoduleBlock(ModuleFile &F); |
| bool ParseLanguageOptions(const SmallVectorImpl<uint64_t> &Record); |
| |
| struct RecordLocation { |
| RecordLocation(ModuleFile *M, uint64_t O) |
| : F(M), Offset(O) {} |
| ModuleFile *F; |
| uint64_t Offset; |
| }; |
| |
| QualType readTypeRecord(unsigned Index); |
| RecordLocation TypeCursorForIndex(unsigned Index); |
| void LoadedDecl(unsigned Index, Decl *D); |
| Decl *ReadDeclRecord(serialization::DeclID ID); |
| RecordLocation DeclCursorForID(serialization::DeclID ID, |
| unsigned &RawLocation); |
| void loadDeclUpdateRecords(serialization::DeclID ID, Decl *D); |
| void loadObjCChainedCategories(serialization::GlobalDeclID ID, |
| ObjCInterfaceDecl *D); |
| |
| RecordLocation getLocalBitOffset(uint64_t GlobalOffset); |
| uint64_t getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset); |
| |
| /// \brief Returns the first preprocessed entity ID that ends after \arg BLoc. |
| serialization::PreprocessedEntityID |
| findBeginPreprocessedEntity(SourceLocation BLoc) const; |
| |
| /// \brief Returns the first preprocessed entity ID that begins after \arg |
| /// ELoc. |
| serialization::PreprocessedEntityID |
| findEndPreprocessedEntity(SourceLocation ELoc) const; |
| |
| /// \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. |
| serialization::PreprocessedEntityID |
| findNextPreprocessedEntity( |
| GlobalSLocOffsetMapType::const_iterator SLocMapI) const; |
| |
| /// \brief Returns (ModuleFile, Local index) pair for \arg GlobalIndex of a |
| /// preprocessed entity. |
| std::pair<ModuleFile *, unsigned> |
| getModulePreprocessedEntity(unsigned GlobalIndex); |
| |
| void PassInterestingDeclsToConsumer(); |
| void PassInterestingDeclToConsumer(Decl *D); |
| |
| /// \brief Produce an error diagnostic and return true. |
| /// |
| /// This routine should only be used for fatal errors that have to |
| /// do with non-routine failures (e.g., corrupted AST file). |
| void Error(StringRef Msg); |
| void Error(unsigned DiagID, StringRef Arg1 = StringRef(), |
| StringRef Arg2 = StringRef()); |
| |
| ASTReader(const ASTReader&); // do not implement |
| ASTReader &operator=(const ASTReader &); // do not implement |
| public: |
| typedef SmallVector<uint64_t, 64> RecordData; |
| |
| /// \brief Load the AST file and validate its contents against the given |
| /// Preprocessor. |
| /// |
| /// \param PP the preprocessor associated with the context in which this |
| /// precompiled header will be loaded. |
| /// |
| /// \param Context the AST context that this precompiled header will be |
| /// loaded into. |
| /// |
| /// \param isysroot If non-NULL, the system include path specified by the |
| /// user. This is only used with relocatable PCH files. If non-NULL, |
| /// a relocatable PCH file will use the default path "/". |
| /// |
| /// \param DisableValidation If true, the AST reader will suppress most |
| /// of its regular consistency checking, allowing the use of precompiled |
| /// headers that cannot be determined to be compatible. |
| /// |
| /// \param DisableStatCache If true, the AST reader will ignore the |
| /// stat cache in the AST files. This performance pessimization can |
| /// help when an AST file is being used in cases where the |
| /// underlying files in the file system may have changed, but |
| /// parsing should still continue. |
| ASTReader(Preprocessor &PP, ASTContext &Context, StringRef isysroot = "", |
| bool DisableValidation = false, bool DisableStatCache = false); |
| |
| ~ASTReader(); |
| |
| SourceManager &getSourceManager() const { return SourceMgr; } |
| |
| /// \brief Load the AST file designated by the given file name. |
| ASTReadResult ReadAST(const std::string &FileName, ModuleKind Type); |
| |
| /// \brief Checks that no file that is stored in PCH is out-of-sync with |
| /// the actual file in the file system. |
| ASTReadResult validateFileEntries(ModuleFile &M); |
| |
| /// \brief Set the AST callbacks listener. |
| void setListener(ASTReaderListener *listener) { |
| Listener.reset(listener); |
| } |
| |
| /// \brief Set the AST deserialization listener. |
| void setDeserializationListener(ASTDeserializationListener *Listener); |
| |
| /// \brief Initializes the ASTContext |
| void InitializeContext(); |
| |
| /// \brief Add in-memory (virtual file) buffer. |
| void addInMemoryBuffer(StringRef &FileName, llvm::MemoryBuffer *Buffer) { |
| ModuleMgr.addInMemoryBuffer(FileName, Buffer); |
| } |
| |
| /// \brief Retrieve the module manager. |
| ModuleManager &getModuleManager() { return ModuleMgr; } |
| |
| /// \brief Retrieve the preprocessor. |
| Preprocessor &getPreprocessor() const { return PP; } |
| |
| /// \brief Retrieve the name of the original source file name |
| const std::string &getOriginalSourceFile() { return OriginalFileName; } |
| |
| /// \brief Retrieve the name of the original source file name directly from |
| /// the AST file, without actually loading the AST file. |
| static std::string getOriginalSourceFile(const std::string &ASTFileName, |
| FileManager &FileMgr, |
| DiagnosticsEngine &Diags); |
| |
| /// \brief Returns the suggested contents of the predefines buffer, |
| /// which contains a (typically-empty) subset of the predefines |
| /// build prior to including the precompiled header. |
| const std::string &getSuggestedPredefines() { return SuggestedPredefines; } |
| |
| /// \brief Read a preallocated preprocessed entity from the external source. |
| /// |
| /// \returns null if an error occurred that prevented the preprocessed |
| /// entity from being loaded. |
| virtual PreprocessedEntity *ReadPreprocessedEntity(unsigned Index); |
| |
| /// \brief Returns a pair of [Begin, End) indices of preallocated |
| /// preprocessed entities that \arg Range encompasses. |
| virtual std::pair<unsigned, unsigned> |
| findPreprocessedEntitiesInRange(SourceRange Range); |
| |
| /// \brief Optionally returns true or false if the preallocated preprocessed |
| /// entity with index \arg Index came from file \arg FID. |
| virtual llvm::Optional<bool> isPreprocessedEntityInFileID(unsigned Index, |
| FileID FID); |
| |
| /// \brief Read the header file information for the given file entry. |
| virtual HeaderFileInfo GetHeaderFileInfo(const FileEntry *FE); |
| |
| void ReadPragmaDiagnosticMappings(DiagnosticsEngine &Diag); |
| |
| /// \brief Returns the number of source locations found in the chain. |
| unsigned getTotalNumSLocs() const { |
| return TotalNumSLocEntries; |
| } |
| |
| /// \brief Returns the number of identifiers found in the chain. |
| unsigned getTotalNumIdentifiers() const { |
| return static_cast<unsigned>(IdentifiersLoaded.size()); |
| } |
| |
| /// \brief Returns the number of types found in the chain. |
| unsigned getTotalNumTypes() const { |
| return static_cast<unsigned>(TypesLoaded.size()); |
| } |
| |
| /// \brief Returns the number of declarations found in the chain. |
| unsigned getTotalNumDecls() const { |
| return static_cast<unsigned>(DeclsLoaded.size()); |
| } |
| |
| /// \brief Returns the number of selectors found in the chain. |
| unsigned getTotalNumSelectors() const { |
| return static_cast<unsigned>(SelectorsLoaded.size()); |
| } |
| |
| /// \brief Returns the number of preprocessed entities known to the AST |
| /// reader. |
| unsigned getTotalNumPreprocessedEntities() const { |
| unsigned Result = 0; |
| for (ModuleConstIterator I = ModuleMgr.begin(), |
| E = ModuleMgr.end(); I != E; ++I) { |
| Result += (*I)->NumPreprocessedEntities; |
| } |
| |
| return Result; |
| } |
| |
| /// \brief Returns the number of C++ base specifiers found in the chain. |
| unsigned getTotalNumCXXBaseSpecifiers() const { |
| return NumCXXBaseSpecifiersLoaded; |
| } |
| |
| /// \brief Reads a TemplateArgumentLocInfo appropriate for the |
| /// given TemplateArgument kind. |
| TemplateArgumentLocInfo |
| GetTemplateArgumentLocInfo(ModuleFile &F, TemplateArgument::ArgKind Kind, |
| const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Reads a TemplateArgumentLoc. |
| TemplateArgumentLoc |
| ReadTemplateArgumentLoc(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Reads a declarator info from the given record. |
| TypeSourceInfo *GetTypeSourceInfo(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Resolve a type ID into a type, potentially building a new |
| /// type. |
| QualType GetType(serialization::TypeID ID); |
| |
| /// \brief Resolve a local type ID within a given AST file into a type. |
| QualType getLocalType(ModuleFile &F, unsigned LocalID); |
| |
| /// \brief Map a local type ID within a given AST file into a global type ID. |
| serialization::TypeID getGlobalTypeID(ModuleFile &F, unsigned LocalID) const; |
| |
| /// \brief Read a type from the current position in the given record, which |
| /// was read from the given AST file. |
| QualType readType(ModuleFile &F, const RecordData &Record, unsigned &Idx) { |
| if (Idx >= Record.size()) |
| return QualType(); |
| |
| return getLocalType(F, Record[Idx++]); |
| } |
| |
| /// \brief Map from a local declaration ID within a given module to a |
| /// global declaration ID. |
| serialization::DeclID getGlobalDeclID(ModuleFile &F, unsigned LocalID) const; |
| |
| /// \brief Returns true if global DeclID \arg ID originated from module |
| /// \arg M. |
| bool isDeclIDFromModule(serialization::GlobalDeclID ID, ModuleFile &M) const; |
| |
| /// \brief Returns the source location for the decl \arg ID. |
| SourceLocation getSourceLocationForDeclID(serialization::GlobalDeclID ID); |
| |
| /// \brief Resolve a declaration ID into a declaration, potentially |
| /// building a new declaration. |
| Decl *GetDecl(serialization::DeclID ID); |
| virtual Decl *GetExternalDecl(uint32_t ID); |
| |
| /// \brief Reads a declaration with the given local ID in the given module. |
| Decl *GetLocalDecl(ModuleFile &F, uint32_t LocalID) { |
| return GetDecl(getGlobalDeclID(F, LocalID)); |
| } |
| |
| /// \brief Reads a declaration with the given local ID in the given module. |
| /// |
| /// \returns The requested declaration, casted to the given return type. |
| template<typename T> |
| T *GetLocalDeclAs(ModuleFile &F, uint32_t LocalID) { |
| return cast_or_null<T>(GetLocalDecl(F, LocalID)); |
| } |
| |
| /// \brief Reads a declaration ID from the given position in a record in the |
| /// given module. |
| /// |
| /// \returns The declaration ID read from the record, adjusted to a global ID. |
| serialization::DeclID ReadDeclID(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Reads a declaration from the given position in a record in the |
| /// given module. |
| Decl *ReadDecl(ModuleFile &F, const RecordData &R, unsigned &I) { |
| return GetDecl(ReadDeclID(F, R, I)); |
| } |
| |
| /// \brief Reads a declaration from the given position in a record in the |
| /// given module. |
| /// |
| /// \returns The declaration read from this location, casted to the given |
| /// result type. |
| template<typename T> |
| T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) { |
| return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I))); |
| } |
| |
| /// \brief Read a CXXBaseSpecifiers ID form the given record and |
| /// return its global bit offset. |
| uint64_t readCXXBaseSpecifiers(ModuleFile &M, const RecordData &Record, |
| unsigned &Idx); |
| |
| virtual CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset); |
| |
| /// \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). |
| virtual Stmt *GetExternalDeclStmt(uint64_t Offset); |
| |
| /// 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 ReadBlockAbbrevs(llvm::BitstreamCursor &Cursor, unsigned BlockID); |
| |
| /// \brief Finds all the visible declarations with a given name. |
| /// The current implementation of this method just loads the entire |
| /// lookup table as unmaterialized references. |
| virtual DeclContext::lookup_result |
| FindExternalVisibleDeclsByName(const DeclContext *DC, |
| DeclarationName Name); |
| |
| /// \brief Read all of the declarations lexically stored in a |
| /// declaration context. |
| /// |
| /// \param DC The declaration context whose declarations will be |
| /// read. |
| /// |
| /// \param Decls Vector that will contain the declarations loaded |
| /// from the external source. The caller is responsible for merging |
| /// these declarations with any declarations already stored in the |
| /// declaration context. |
| /// |
| /// \returns true if there was an error while reading the |
| /// declarations for this declaration context. |
| virtual ExternalLoadResult FindExternalLexicalDecls(const DeclContext *DC, |
| bool (*isKindWeWant)(Decl::Kind), |
| SmallVectorImpl<Decl*> &Decls); |
| |
| /// \brief Get the decls that are contained in a file in the Offset/Length |
| /// range. \arg Length can be 0 to indicate a point at \arg Offset instead of |
| /// a range. |
| virtual void FindFileRegionDecls(FileID File, unsigned Offset,unsigned Length, |
| SmallVectorImpl<Decl *> &Decls); |
| |
| /// \brief Notify ASTReader that we started deserialization of |
| /// a decl or type so until FinishedDeserializing is called there may be |
| /// decls that are initializing. Must be paired with FinishedDeserializing. |
| virtual void StartedDeserializing() { ++NumCurrentElementsDeserializing; } |
| |
| /// \brief Notify ASTReader that we finished the deserialization of |
| /// a decl or type. Must be paired with StartedDeserializing. |
| virtual void FinishedDeserializing(); |
| |
| /// \brief Function that will be invoked when we begin parsing a new |
| /// translation unit involving this external AST source. |
| /// |
| /// This function will provide all of the external definitions to |
| /// the ASTConsumer. |
| virtual void StartTranslationUnit(ASTConsumer *Consumer); |
| |
| /// \brief Print some statistics about AST usage. |
| virtual void PrintStats(); |
| |
| /// \brief Dump information about the AST reader to standard error. |
| void dump(); |
| |
| /// Return the amount of memory used by memory buffers, breaking down |
| /// by heap-backed versus mmap'ed memory. |
| virtual void getMemoryBufferSizes(MemoryBufferSizes &sizes) const; |
| |
| /// \brief Initialize the semantic source with the Sema instance |
| /// being used to perform semantic analysis on the abstract syntax |
| /// tree. |
| virtual void InitializeSema(Sema &S); |
| |
| /// \brief Inform the semantic consumer that Sema is no longer available. |
| virtual void ForgetSema() { SemaObj = 0; } |
| |
| /// \brief Retrieve the IdentifierInfo for the named identifier. |
| /// |
| /// This routine builds a new IdentifierInfo for the given identifier. If any |
| /// declarations with this name are visible from translation unit scope, their |
| /// declarations will be deserialized and introduced into the declaration |
| /// chain of the identifier. |
| virtual IdentifierInfo *get(const char *NameStart, const char *NameEnd); |
| IdentifierInfo *get(StringRef Name) { |
| return get(Name.begin(), Name.end()); |
| } |
| |
| /// \brief Retrieve an iterator into the set of all identifiers |
| /// in all loaded AST files. |
| virtual IdentifierIterator *getIdentifiers() const; |
| |
| /// \brief Load the contents of the global method pool for a given |
| /// selector. |
| /// |
| /// \returns a pair of Objective-C methods lists containing the |
| /// instance and factory methods, respectively, with this selector. |
| virtual std::pair<ObjCMethodList, ObjCMethodList> |
| ReadMethodPool(Selector Sel); |
| |
| /// \brief Load the set of namespaces that are known to the external source, |
| /// which will be used during typo correction. |
| virtual void ReadKnownNamespaces( |
| SmallVectorImpl<NamespaceDecl *> &Namespaces); |
| |
| virtual void ReadTentativeDefinitions( |
| SmallVectorImpl<VarDecl *> &TentativeDefs); |
| |
| virtual void ReadUnusedFileScopedDecls( |
| SmallVectorImpl<const DeclaratorDecl *> &Decls); |
| |
| virtual void ReadDelegatingConstructors( |
| SmallVectorImpl<CXXConstructorDecl *> &Decls); |
| |
| virtual void ReadExtVectorDecls(SmallVectorImpl<TypedefNameDecl *> &Decls); |
| |
| virtual void ReadDynamicClasses(SmallVectorImpl<CXXRecordDecl *> &Decls); |
| |
| virtual void ReadLocallyScopedExternalDecls( |
| SmallVectorImpl<NamedDecl *> &Decls); |
| |
| virtual void ReadReferencedSelectors( |
| SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels); |
| |
| virtual void ReadWeakUndeclaredIdentifiers( |
| SmallVectorImpl<std::pair<IdentifierInfo *, WeakInfo> > &WI); |
| |
| virtual void ReadUsedVTables(SmallVectorImpl<ExternalVTableUse> &VTables); |
| |
| virtual void ReadPendingInstantiations( |
| SmallVectorImpl<std::pair<ValueDecl *, |
| SourceLocation> > &Pending); |
| |
| /// \brief Load a selector from disk, registering its ID if it exists. |
| void LoadSelector(Selector Sel); |
| |
| void SetIdentifierInfo(unsigned ID, IdentifierInfo *II); |
| void SetGloballyVisibleDecls(IdentifierInfo *II, |
| const SmallVectorImpl<uint32_t> &DeclIDs, |
| bool Nonrecursive = false); |
| |
| /// \brief Report a diagnostic. |
| DiagnosticBuilder Diag(unsigned DiagID); |
| |
| /// \brief Report a diagnostic. |
| DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID); |
| |
| IdentifierInfo *DecodeIdentifierInfo(serialization::IdentifierID ID); |
| |
| IdentifierInfo *GetIdentifierInfo(ModuleFile &M, const RecordData &Record, |
| unsigned &Idx) { |
| return DecodeIdentifierInfo(getGlobalIdentifierID(M, Record[Idx++])); |
| } |
| |
| virtual IdentifierInfo *GetIdentifier(serialization::IdentifierID ID) { |
| return DecodeIdentifierInfo(ID); |
| } |
| |
| IdentifierInfo *getLocalIdentifier(ModuleFile &M, unsigned LocalID); |
| |
| serialization::IdentifierID getGlobalIdentifierID(ModuleFile &M, |
| unsigned LocalID); |
| |
| /// \brief Read the source location entry with index ID. |
| virtual bool ReadSLocEntry(int ID); |
| |
| /// \brief Retrieve a selector from the given module with its local ID |
| /// number. |
| Selector getLocalSelector(ModuleFile &M, unsigned LocalID); |
| |
| Selector DecodeSelector(serialization::SelectorID Idx); |
| |
| virtual Selector GetExternalSelector(serialization::SelectorID ID); |
| uint32_t GetNumExternalSelectors(); |
| |
| Selector ReadSelector(ModuleFile &M, const RecordData &Record, unsigned &Idx) { |
| return getLocalSelector(M, Record[Idx++]); |
| } |
| |
| /// \brief Retrieve the global selector ID that corresponds to this |
| /// the local selector ID in a given module. |
| serialization::SelectorID getGlobalSelectorID(ModuleFile &F, |
| unsigned LocalID) const; |
| |
| /// \brief Read a declaration name. |
| DeclarationName ReadDeclarationName(ModuleFile &F, |
| const RecordData &Record, unsigned &Idx); |
| void ReadDeclarationNameLoc(ModuleFile &F, |
| DeclarationNameLoc &DNLoc, DeclarationName Name, |
| const RecordData &Record, unsigned &Idx); |
| void ReadDeclarationNameInfo(ModuleFile &F, DeclarationNameInfo &NameInfo, |
| const RecordData &Record, unsigned &Idx); |
| |
| void ReadQualifierInfo(ModuleFile &F, QualifierInfo &Info, |
| const RecordData &Record, unsigned &Idx); |
| |
| NestedNameSpecifier *ReadNestedNameSpecifier(ModuleFile &F, |
| const RecordData &Record, |
| unsigned &Idx); |
| |
| NestedNameSpecifierLoc ReadNestedNameSpecifierLoc(ModuleFile &F, |
| const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Read a template name. |
| TemplateName ReadTemplateName(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Read a template argument. |
| TemplateArgument ReadTemplateArgument(ModuleFile &F, |
| const RecordData &Record,unsigned &Idx); |
| |
| /// \brief Read a template parameter list. |
| TemplateParameterList *ReadTemplateParameterList(ModuleFile &F, |
| const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Read a template argument array. |
| void |
| ReadTemplateArgumentList(SmallVector<TemplateArgument, 8> &TemplArgs, |
| ModuleFile &F, const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Read a UnresolvedSet structure. |
| void ReadUnresolvedSet(ModuleFile &F, UnresolvedSetImpl &Set, |
| const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Read a C++ base specifier. |
| CXXBaseSpecifier ReadCXXBaseSpecifier(ModuleFile &F, |
| const RecordData &Record,unsigned &Idx); |
| |
| /// \brief Read a CXXCtorInitializer array. |
| std::pair<CXXCtorInitializer **, unsigned> |
| ReadCXXCtorInitializers(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Read a source location from raw form. |
| SourceLocation ReadSourceLocation(ModuleFile &ModuleFile, unsigned Raw) const { |
| SourceLocation Loc = SourceLocation::getFromRawEncoding(Raw); |
| assert(ModuleFile.SLocRemap.find(Loc.getOffset()) != ModuleFile.SLocRemap.end() && |
| "Cannot find offset to remap."); |
| int Remap = ModuleFile.SLocRemap.find(Loc.getOffset())->second; |
| return Loc.getLocWithOffset(Remap); |
| } |
| |
| /// \brief Read a source location. |
| SourceLocation ReadSourceLocation(ModuleFile &ModuleFile, |
| const RecordData &Record, unsigned& Idx) { |
| return ReadSourceLocation(ModuleFile, Record[Idx++]); |
| } |
| |
| /// \brief Read a source range. |
| SourceRange ReadSourceRange(ModuleFile &F, |
| const RecordData &Record, unsigned& Idx); |
| |
| /// \brief Read an integral value |
| llvm::APInt ReadAPInt(const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Read a signed integral value |
| llvm::APSInt ReadAPSInt(const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Read a floating-point value |
| llvm::APFloat ReadAPFloat(const RecordData &Record, unsigned &Idx); |
| |
| // \brief Read a string |
| std::string ReadString(const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Read a version tuple. |
| VersionTuple ReadVersionTuple(const RecordData &Record, unsigned &Idx); |
| |
| CXXTemporary *ReadCXXTemporary(ModuleFile &F, const RecordData &Record, |
| unsigned &Idx); |
| |
| /// \brief Reads attributes from the current stream position. |
| void ReadAttributes(ModuleFile &F, AttrVec &Attrs, |
| const RecordData &Record, unsigned &Idx); |
| |
| /// \brief Reads a statement. |
| Stmt *ReadStmt(ModuleFile &F); |
| |
| /// \brief Reads an expression. |
| Expr *ReadExpr(ModuleFile &F); |
| |
| /// \brief Reads a sub-statement operand during statement reading. |
| Stmt *ReadSubStmt() { |
| assert(ReadingKind == Read_Stmt && |
| "Should be called only during statement reading!"); |
| // Subexpressions are stored from last to first, so the next Stmt we need |
| // is at the back of the stack. |
| assert(!StmtStack.empty() && "Read too many sub statements!"); |
| return StmtStack.pop_back_val(); |
| } |
| |
| /// \brief Reads a sub-expression operand during statement reading. |
| Expr *ReadSubExpr(); |
| |
| /// \brief Reads the macro record located at the given offset. |
| void ReadMacroRecord(ModuleFile &F, uint64_t Offset); |
| |
| /// \brief Determine the global preprocessed entity ID that corresponds to |
| /// the given local ID within the given module. |
| serialization::PreprocessedEntityID |
| getGlobalPreprocessedEntityID(ModuleFile &M, unsigned LocalID) const; |
| |
| /// \brief Note that the identifier is a macro whose record will be loaded |
| /// from the given AST file at the given (file-local) offset. |
| void SetIdentifierIsMacro(IdentifierInfo *II, ModuleFile &F, |
| uint64_t Offset); |
| |
| /// \brief Read the set of macros defined by this external macro source. |
| virtual void ReadDefinedMacros(); |
| |
| /// \brief Read the macro definition for this identifier. |
| virtual void LoadMacroDefinition(IdentifierInfo *II); |
| |
| /// \brief Update an out-of-date identifier. |
| virtual void updateOutOfDateIdentifier(IdentifierInfo &II); |
| |
| /// \brief Read the macro definition corresponding to this iterator |
| /// into the unread macro record offsets table. |
| void LoadMacroDefinition( |
| llvm::DenseMap<IdentifierInfo *, uint64_t>::iterator Pos); |
| |
| /// \brief Retrieve the AST context that this AST reader supplements. |
| ASTContext &getContext() { return Context; } |
| |
| // \brief Contains declarations that were loaded before we have |
| // access to a Sema object. |
| SmallVector<NamedDecl *, 16> PreloadedDecls; |
| |
| /// \brief Retrieve the semantic analysis object used to analyze the |
| /// translation unit in which the precompiled header is being |
| /// imported. |
| Sema *getSema() { return SemaObj; } |
| |
| /// \brief Retrieve the identifier table associated with the |
| /// preprocessor. |
| IdentifierTable &getIdentifierTable(); |
| |
| /// \brief Record that the given ID maps to the given switch-case |
| /// statement. |
| void RecordSwitchCaseID(SwitchCase *SC, unsigned ID); |
| |
| /// \brief Retrieve the switch-case statement with the given ID. |
| SwitchCase *getSwitchCaseWithID(unsigned ID); |
| |
| void ClearSwitchCaseIDs(); |
| }; |
| |
| /// \brief Helper class that saves the current stream position and |
| /// then restores it when destroyed. |
| struct SavedStreamPosition { |
| explicit SavedStreamPosition(llvm::BitstreamCursor &Cursor) |
| : Cursor(Cursor), Offset(Cursor.GetCurrentBitNo()) { } |
| |
| ~SavedStreamPosition() { |
| Cursor.JumpToBit(Offset); |
| } |
| |
| private: |
| llvm::BitstreamCursor &Cursor; |
| uint64_t Offset; |
| }; |
| |
| inline void PCHValidator::Error(const char *Msg) { |
| Reader.Error(Msg); |
| } |
| |
| } // end namespace clang |
| |
| #endif |