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-//===--- HeaderSearch.h - Resolve Header File Locations ---------*- 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 HeaderSearch interface.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_LEX_HEADERSEARCH_H
-#define LLVM_CLANG_LEX_HEADERSEARCH_H
-
-#include "clang/Lex/DirectoryLookup.h"
-#include "clang/Lex/ModuleMap.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringSet.h"
-#include "llvm/Support/Allocator.h"
-#include <memory>
-#include <vector>
-
-namespace clang {
-
-class DiagnosticsEngine;
-class ExternalPreprocessorSource;
-class FileEntry;
-class FileManager;
-class HeaderSearchOptions;
-class IdentifierInfo;
-class Preprocessor;
-
-/// \brief The preprocessor keeps track of this information for each
-/// file that is \#included.
-struct HeaderFileInfo {
- /// \brief True if this is a \#import'd or \#pragma once file.
- unsigned isImport : 1;
-
- /// \brief True if this is a \#pragma once file.
- unsigned isPragmaOnce : 1;
-
- /// DirInfo - Keep track of whether this is a system header, and if so,
- /// whether it is C++ clean or not. This can be set by the include paths or
- /// by \#pragma gcc system_header. This is an instance of
- /// SrcMgr::CharacteristicKind.
- unsigned DirInfo : 2;
-
- /// \brief Whether this header file info was supplied by an external source,
- /// and has not changed since.
- unsigned External : 1;
-
- /// \brief Whether this header is part of a module.
- unsigned isModuleHeader : 1;
-
- /// \brief Whether this header is part of the module that we are building.
- unsigned isCompilingModuleHeader : 1;
-
- /// \brief Whether this structure is considered to already have been
- /// "resolved", meaning that it was loaded from the external source.
- unsigned Resolved : 1;
-
- /// \brief Whether this is a header inside a framework that is currently
- /// being built.
- ///
- /// When a framework is being built, the headers have not yet been placed
- /// into the appropriate framework subdirectories, and therefore are
- /// provided via a header map. This bit indicates when this is one of
- /// those framework headers.
- unsigned IndexHeaderMapHeader : 1;
-
- /// \brief Whether this file has been looked up as a header.
- unsigned IsValid : 1;
-
- /// \brief The number of times the file has been included already.
- unsigned short NumIncludes;
-
- /// \brief The ID number of the controlling macro.
- ///
- /// This ID number will be non-zero when there is a controlling
- /// macro whose IdentifierInfo may not yet have been loaded from
- /// external storage.
- unsigned ControllingMacroID;
-
- /// If this file has a \#ifndef XXX (or equivalent) guard that
- /// protects the entire contents of the file, this is the identifier
- /// for the macro that controls whether or not it has any effect.
- ///
- /// Note: Most clients should use getControllingMacro() to access
- /// the controlling macro of this header, since
- /// getControllingMacro() is able to load a controlling macro from
- /// external storage.
- const IdentifierInfo *ControllingMacro;
-
- /// \brief If this header came from a framework include, this is the name
- /// of the framework.
- StringRef Framework;
-
- HeaderFileInfo()
- : isImport(false), isPragmaOnce(false), DirInfo(SrcMgr::C_User),
- External(false), isModuleHeader(false), isCompilingModuleHeader(false),
- Resolved(false), IndexHeaderMapHeader(false), IsValid(0),
- NumIncludes(0), ControllingMacroID(0), ControllingMacro(nullptr) {}
-
- /// \brief Retrieve the controlling macro for this header file, if
- /// any.
- const IdentifierInfo *
- getControllingMacro(ExternalPreprocessorSource *External);
-
- /// \brief Determine whether this is a non-default header file info, e.g.,
- /// it corresponds to an actual header we've included or tried to include.
- bool isNonDefault() const {
- return isImport || isPragmaOnce || NumIncludes || ControllingMacro ||
- ControllingMacroID;
- }
-};
-
-/// \brief An external source of header file information, which may supply
-/// information about header files already included.
-class ExternalHeaderFileInfoSource {
-public:
- virtual ~ExternalHeaderFileInfoSource();
-
- /// \brief Retrieve the header file information for the given file entry.
- ///
- /// \returns Header file information for the given file entry, with the
- /// \c External bit set. If the file entry is not known, return a
- /// default-constructed \c HeaderFileInfo.
- virtual HeaderFileInfo GetHeaderFileInfo(const FileEntry *FE) = 0;
-};
-
-/// \brief Encapsulates the information needed to find the file referenced
-/// by a \#include or \#include_next, (sub-)framework lookup, etc.
-class HeaderSearch {
- /// This structure is used to record entries in our framework cache.
- struct FrameworkCacheEntry {
- /// The directory entry which should be used for the cached framework.
- const DirectoryEntry *Directory;
-
- /// Whether this framework has been "user-specified" to be treated as if it
- /// were a system framework (even if it was found outside a system framework
- /// directory).
- bool IsUserSpecifiedSystemFramework;
- };
-
- /// \brief Header-search options used to initialize this header search.
- IntrusiveRefCntPtr<HeaderSearchOptions> HSOpts;
-
- DiagnosticsEngine &Diags;
- FileManager &FileMgr;
- /// \#include search path information. Requests for \#include "x" search the
- /// directory of the \#including file first, then each directory in SearchDirs
- /// consecutively. Requests for <x> search the current dir first, then each
- /// directory in SearchDirs, starting at AngledDirIdx, consecutively. If
- /// NoCurDirSearch is true, then the check for the file in the current
- /// directory is suppressed.
- std::vector<DirectoryLookup> SearchDirs;
- unsigned AngledDirIdx;
- unsigned SystemDirIdx;
- bool NoCurDirSearch;
-
- /// \brief \#include prefixes for which the 'system header' property is
- /// overridden.
- ///
- /// For a \#include "x" or \#include \<x> directive, the last string in this
- /// list which is a prefix of 'x' determines whether the file is treated as
- /// a system header.
- std::vector<std::pair<std::string, bool> > SystemHeaderPrefixes;
-
- /// \brief The path to the module cache.
- std::string ModuleCachePath;
-
- /// \brief All of the preprocessor-specific data about files that are
- /// included, indexed by the FileEntry's UID.
- mutable std::vector<HeaderFileInfo> FileInfo;
-
- /// Keeps track of each lookup performed by LookupFile.
- struct LookupFileCacheInfo {
- /// Starting index in SearchDirs that the cached search was performed from.
- /// If there is a hit and this value doesn't match the current query, the
- /// cache has to be ignored.
- unsigned StartIdx;
- /// The entry in SearchDirs that satisfied the query.
- unsigned HitIdx;
- /// This is non-null if the original filename was mapped to a framework
- /// include via a headermap.
- const char *MappedName;
-
- /// Default constructor -- Initialize all members with zero.
- LookupFileCacheInfo(): StartIdx(0), HitIdx(0), MappedName(nullptr) {}
-
- void reset(unsigned StartIdx) {
- this->StartIdx = StartIdx;
- this->MappedName = nullptr;
- }
- };
- llvm::StringMap<LookupFileCacheInfo, llvm::BumpPtrAllocator> LookupFileCache;
-
- /// \brief Collection mapping a framework or subframework
- /// name like "Carbon" to the Carbon.framework directory.
- llvm::StringMap<FrameworkCacheEntry, llvm::BumpPtrAllocator> FrameworkMap;
-
- /// IncludeAliases - maps include file names (including the quotes or
- /// angle brackets) to other include file names. This is used to support the
- /// include_alias pragma for Microsoft compatibility.
- typedef llvm::StringMap<std::string, llvm::BumpPtrAllocator>
- IncludeAliasMap;
- std::unique_ptr<IncludeAliasMap> IncludeAliases;
-
- /// HeaderMaps - This is a mapping from FileEntry -> HeaderMap, uniquing
- /// headermaps. This vector owns the headermap.
- std::vector<std::pair<const FileEntry*, const HeaderMap*> > HeaderMaps;
-
- /// \brief The mapping between modules and headers.
- mutable ModuleMap ModMap;
-
- /// \brief Describes whether a given directory has a module map in it.
- llvm::DenseMap<const DirectoryEntry *, bool> DirectoryHasModuleMap;
-
- /// \brief Set of module map files we've already loaded, and a flag indicating
- /// whether they were valid or not.
- llvm::DenseMap<const FileEntry *, bool> LoadedModuleMaps;
-
- /// \brief Uniqued set of framework names, which is used to track which
- /// headers were included as framework headers.
- llvm::StringSet<llvm::BumpPtrAllocator> FrameworkNames;
-
- /// \brief Entity used to resolve the identifier IDs of controlling
- /// macros into IdentifierInfo pointers, and keep the identifire up to date,
- /// as needed.
- ExternalPreprocessorSource *ExternalLookup;
-
- /// \brief Entity used to look up stored header file information.
- ExternalHeaderFileInfoSource *ExternalSource;
-
- // Various statistics we track for performance analysis.
- unsigned NumIncluded;
- unsigned NumMultiIncludeFileOptzn;
- unsigned NumFrameworkLookups, NumSubFrameworkLookups;
-
- const LangOptions &LangOpts;
-
- // HeaderSearch doesn't support default or copy construction.
- HeaderSearch(const HeaderSearch&) = delete;
- void operator=(const HeaderSearch&) = delete;
-
- friend class DirectoryLookup;
-
-public:
- HeaderSearch(IntrusiveRefCntPtr<HeaderSearchOptions> HSOpts,
- SourceManager &SourceMgr, DiagnosticsEngine &Diags,
- const LangOptions &LangOpts, const TargetInfo *Target);
- ~HeaderSearch();
-
- /// \brief Retrieve the header-search options with which this header search
- /// was initialized.
- HeaderSearchOptions &getHeaderSearchOpts() const { return *HSOpts; }
-
- FileManager &getFileMgr() const { return FileMgr; }
-
- /// \brief Interface for setting the file search paths.
- void SetSearchPaths(const std::vector<DirectoryLookup> &dirs,
- unsigned angledDirIdx, unsigned systemDirIdx,
- bool noCurDirSearch) {
- assert(angledDirIdx <= systemDirIdx && systemDirIdx <= dirs.size() &&
- "Directory indicies are unordered");
- SearchDirs = dirs;
- AngledDirIdx = angledDirIdx;
- SystemDirIdx = systemDirIdx;
- NoCurDirSearch = noCurDirSearch;
- //LookupFileCache.clear();
- }
-
- /// \brief Add an additional search path.
- void AddSearchPath(const DirectoryLookup &dir, bool isAngled) {
- unsigned idx = isAngled ? SystemDirIdx : AngledDirIdx;
- SearchDirs.insert(SearchDirs.begin() + idx, dir);
- if (!isAngled)
- AngledDirIdx++;
- SystemDirIdx++;
- }
-
- /// \brief Set the list of system header prefixes.
- void SetSystemHeaderPrefixes(ArrayRef<std::pair<std::string, bool> > P) {
- SystemHeaderPrefixes.assign(P.begin(), P.end());
- }
-
- /// \brief Checks whether the map exists or not.
- bool HasIncludeAliasMap() const { return (bool)IncludeAliases; }
-
- /// \brief Map the source include name to the dest include name.
- ///
- /// The Source should include the angle brackets or quotes, the dest
- /// should not. This allows for distinction between <> and "" headers.
- void AddIncludeAlias(StringRef Source, StringRef Dest) {
- if (!IncludeAliases)
- IncludeAliases.reset(new IncludeAliasMap);
- (*IncludeAliases)[Source] = Dest;
- }
-
- /// MapHeaderToIncludeAlias - Maps one header file name to a different header
- /// file name, for use with the include_alias pragma. Note that the source
- /// file name should include the angle brackets or quotes. Returns StringRef
- /// as null if the header cannot be mapped.
- StringRef MapHeaderToIncludeAlias(StringRef Source) {
- assert(IncludeAliases && "Trying to map headers when there's no map");
-
- // Do any filename replacements before anything else
- IncludeAliasMap::const_iterator Iter = IncludeAliases->find(Source);
- if (Iter != IncludeAliases->end())
- return Iter->second;
- return StringRef();
- }
-
- /// \brief Set the path to the module cache.
- void setModuleCachePath(StringRef CachePath) {
- ModuleCachePath = CachePath;
- }
-
- /// \brief Retrieve the path to the module cache.
- StringRef getModuleCachePath() const { return ModuleCachePath; }
-
- /// \brief Consider modules when including files from this directory.
- void setDirectoryHasModuleMap(const DirectoryEntry* Dir) {
- DirectoryHasModuleMap[Dir] = true;
- }
-
- /// \brief Forget everything we know about headers so far.
- void ClearFileInfo() {
- FileInfo.clear();
- }
-
- void SetExternalLookup(ExternalPreprocessorSource *EPS) {
- ExternalLookup = EPS;
- }
-
- ExternalPreprocessorSource *getExternalLookup() const {
- return ExternalLookup;
- }
-
- /// \brief Set the external source of header information.
- void SetExternalSource(ExternalHeaderFileInfoSource *ES) {
- ExternalSource = ES;
- }
-
- /// \brief Set the target information for the header search, if not
- /// already known.
- void setTarget(const TargetInfo &Target);
-
- /// \brief Given a "foo" or \<foo> reference, look up the indicated file,
- /// return null on failure.
- ///
- /// \returns If successful, this returns 'UsedDir', the DirectoryLookup member
- /// the file was found in, or null if not applicable.
- ///
- /// \param IncludeLoc Used for diagnostics if valid.
- ///
- /// \param isAngled indicates whether the file reference is a <> reference.
- ///
- /// \param CurDir If non-null, the file was found in the specified directory
- /// search location. This is used to implement \#include_next.
- ///
- /// \param Includers Indicates where the \#including file(s) are, in case
- /// relative searches are needed. In reverse order of inclusion.
- ///
- /// \param SearchPath If non-null, will be set to the search path relative
- /// to which the file was found. If the include path is absolute, SearchPath
- /// will be set to an empty string.
- ///
- /// \param RelativePath If non-null, will be set to the path relative to
- /// SearchPath at which the file was found. This only differs from the
- /// Filename for framework includes.
- ///
- /// \param SuggestedModule If non-null, and the file found is semantically
- /// part of a known module, this will be set to the module that should
- /// be imported instead of preprocessing/parsing the file found.
- const FileEntry *LookupFile(
- StringRef Filename, SourceLocation IncludeLoc, bool isAngled,
- const DirectoryLookup *FromDir, const DirectoryLookup *&CurDir,
- ArrayRef<std::pair<const FileEntry *, const DirectoryEntry *>> Includers,
- SmallVectorImpl<char> *SearchPath, SmallVectorImpl<char> *RelativePath,
- Module *RequestingModule, ModuleMap::KnownHeader *SuggestedModule,
- bool SkipCache = false);
-
- /// \brief Look up a subframework for the specified \#include file.
- ///
- /// For example, if \#include'ing <HIToolbox/HIToolbox.h> from
- /// within ".../Carbon.framework/Headers/Carbon.h", check to see if
- /// HIToolbox is a subframework within Carbon.framework. If so, return
- /// the FileEntry for the designated file, otherwise return null.
- const FileEntry *LookupSubframeworkHeader(
- StringRef Filename, const FileEntry *RelativeFileEnt,
- SmallVectorImpl<char> *SearchPath, SmallVectorImpl<char> *RelativePath,
- Module *RequestingModule, ModuleMap::KnownHeader *SuggestedModule);
-
- /// \brief Look up the specified framework name in our framework cache.
- /// \returns The DirectoryEntry it is in if we know, null otherwise.
- FrameworkCacheEntry &LookupFrameworkCache(StringRef FWName) {
- return FrameworkMap[FWName];
- }
-
- /// \brief Mark the specified file as a target of of a \#include,
- /// \#include_next, or \#import directive.
- ///
- /// \return false if \#including the file will have no effect or true
- /// if we should include it.
- bool ShouldEnterIncludeFile(Preprocessor &PP, const FileEntry *File,
- bool isImport, Module *CorrespondingModule);
-
- /// \brief Return whether the specified file is a normal header,
- /// a system header, or a C++ friendly system header.
- SrcMgr::CharacteristicKind getFileDirFlavor(const FileEntry *File) {
- return (SrcMgr::CharacteristicKind)getFileInfo(File).DirInfo;
- }
-
- /// \brief Mark the specified file as a "once only" file, e.g. due to
- /// \#pragma once.
- void MarkFileIncludeOnce(const FileEntry *File) {
- HeaderFileInfo &FI = getFileInfo(File);
- FI.isImport = true;
- FI.isPragmaOnce = true;
- }
-
- /// \brief Mark the specified file as a system header, e.g. due to
- /// \#pragma GCC system_header.
- void MarkFileSystemHeader(const FileEntry *File) {
- getFileInfo(File).DirInfo = SrcMgr::C_System;
- }
-
- /// \brief Mark the specified file as part of a module.
- void MarkFileModuleHeader(const FileEntry *File,
- ModuleMap::ModuleHeaderRole Role,
- bool IsCompiledModuleHeader);
-
- /// \brief Increment the count for the number of times the specified
- /// FileEntry has been entered.
- void IncrementIncludeCount(const FileEntry *File) {
- ++getFileInfo(File).NumIncludes;
- }
-
- /// \brief Mark the specified file as having a controlling macro.
- ///
- /// This is used by the multiple-include optimization to eliminate
- /// no-op \#includes.
- void SetFileControllingMacro(const FileEntry *File,
- const IdentifierInfo *ControllingMacro) {
- getFileInfo(File).ControllingMacro = ControllingMacro;
- }
-
- /// \brief Return true if this is the first time encountering this header.
- bool FirstTimeLexingFile(const FileEntry *File) {
- return getFileInfo(File).NumIncludes == 1;
- }
-
- /// \brief Determine whether this file is intended to be safe from
- /// multiple inclusions, e.g., it has \#pragma once or a controlling
- /// macro.
- ///
- /// This routine does not consider the effect of \#import
- bool isFileMultipleIncludeGuarded(const FileEntry *File);
-
- /// CreateHeaderMap - This method returns a HeaderMap for the specified
- /// FileEntry, uniquing them through the 'HeaderMaps' datastructure.
- const HeaderMap *CreateHeaderMap(const FileEntry *FE);
-
- /// \brief Retrieve the name of the module file that should be used to
- /// load the given module.
- ///
- /// \param Module The module whose module file name will be returned.
- ///
- /// \returns The name of the module file that corresponds to this module,
- /// or an empty string if this module does not correspond to any module file.
- std::string getModuleFileName(Module *Module);
-
- /// \brief Retrieve the name of the module file that should be used to
- /// load a module with the given name.
- ///
- /// \param ModuleName The module whose module file name will be returned.
- ///
- /// \param ModuleMapPath A path that when combined with \c ModuleName
- /// uniquely identifies this module. See Module::ModuleMap.
- ///
- /// \returns The name of the module file that corresponds to this module,
- /// or an empty string if this module does not correspond to any module file.
- std::string getModuleFileName(StringRef ModuleName, StringRef ModuleMapPath);
-
- /// \brief Lookup a module Search for a module with the given name.
- ///
- /// \param ModuleName The name of the module we're looking for.
- ///
- /// \param AllowSearch Whether we are allowed to search in the various
- /// search directories to produce a module definition. If not, this lookup
- /// will only return an already-known module.
- ///
- /// \returns The module with the given name.
- Module *lookupModule(StringRef ModuleName, bool AllowSearch = true);
-
- /// \brief Try to find a module map file in the given directory, returning
- /// \c nullptr if none is found.
- const FileEntry *lookupModuleMapFile(const DirectoryEntry *Dir,
- bool IsFramework);
-
- void IncrementFrameworkLookupCount() { ++NumFrameworkLookups; }
-
- /// \brief Determine whether there is a module map that may map the header
- /// with the given file name to a (sub)module.
- /// Always returns false if modules are disabled.
- ///
- /// \param Filename The name of the file.
- ///
- /// \param Root The "root" directory, at which we should stop looking for
- /// module maps.
- ///
- /// \param IsSystem Whether the directories we're looking at are system
- /// header directories.
- bool hasModuleMap(StringRef Filename, const DirectoryEntry *Root,
- bool IsSystem);
-
- /// \brief Retrieve the module that corresponds to the given file, if any.
- ///
- /// \param File The header that we wish to map to a module.
- ModuleMap::KnownHeader findModuleForHeader(const FileEntry *File) const;
-
- /// \brief Read the contents of the given module map file.
- ///
- /// \param File The module map file.
- /// \param IsSystem Whether this file is in a system header directory.
- ///
- /// \returns true if an error occurred, false otherwise.
- bool loadModuleMapFile(const FileEntry *File, bool IsSystem);
-
- /// \brief Collect the set of all known, top-level modules.
- ///
- /// \param Modules Will be filled with the set of known, top-level modules.
- void collectAllModules(SmallVectorImpl<Module *> &Modules);
-
- /// \brief Load all known, top-level system modules.
- void loadTopLevelSystemModules();
-
-private:
- /// \brief Retrieve a module with the given name, which may be part of the
- /// given framework.
- ///
- /// \param Name The name of the module to retrieve.
- ///
- /// \param Dir The framework directory (e.g., ModuleName.framework).
- ///
- /// \param IsSystem Whether the framework directory is part of the system
- /// frameworks.
- ///
- /// \returns The module, if found; otherwise, null.
- Module *loadFrameworkModule(StringRef Name,
- const DirectoryEntry *Dir,
- bool IsSystem);
-
- /// \brief Load all of the module maps within the immediate subdirectories
- /// of the given search directory.
- void loadSubdirectoryModuleMaps(DirectoryLookup &SearchDir);
-
- /// \brief Find and suggest a usable module for the given file.
- ///
- /// \return \c true if the file can be used, \c false if we are not permitted to
- /// find this file due to requirements from \p RequestingModule.
- bool findUsableModuleForHeader(const FileEntry *File,
- const DirectoryEntry *Root,
- Module *RequestingModule,
- ModuleMap::KnownHeader *SuggestedModule,
- bool IsSystemHeaderDir);
-
- /// \brief Find and suggest a usable module for the given file, which is part of
- /// the specified framework.
- ///
- /// \return \c true if the file can be used, \c false if we are not permitted to
- /// find this file due to requirements from \p RequestingModule.
- bool findUsableModuleForFrameworkHeader(
- const FileEntry *File, StringRef FrameworkDir, Module *RequestingModule,
- ModuleMap::KnownHeader *SuggestedModule, bool IsSystemFramework);
-
- /// \brief Look up the file with the specified name and determine its owning
- /// module.
- const FileEntry *
- getFileAndSuggestModule(StringRef FileName, const DirectoryEntry *Dir,
- bool IsSystemHeaderDir, Module *RequestingModule,
- ModuleMap::KnownHeader *SuggestedModule);
-
-public:
- /// \brief Retrieve the module map.
- ModuleMap &getModuleMap() { return ModMap; }
-
- /// \brief Retrieve the module map.
- const ModuleMap &getModuleMap() const { return ModMap; }
-
- unsigned header_file_size() const { return FileInfo.size(); }
-
- /// \brief Return the HeaderFileInfo structure for the specified FileEntry,
- /// in preparation for updating it in some way.
- HeaderFileInfo &getFileInfo(const FileEntry *FE);
-
- /// \brief Return the HeaderFileInfo structure for the specified FileEntry,
- /// if it has ever been filled in.
- /// \param WantExternal Whether the caller wants purely-external header file
- /// info (where \p External is true).
- const HeaderFileInfo *getExistingFileInfo(const FileEntry *FE,
- bool WantExternal = true) const;
-
- // Used by external tools
- typedef std::vector<DirectoryLookup>::const_iterator search_dir_iterator;
- search_dir_iterator search_dir_begin() const { return SearchDirs.begin(); }
- search_dir_iterator search_dir_end() const { return SearchDirs.end(); }
- unsigned search_dir_size() const { return SearchDirs.size(); }
-
- search_dir_iterator quoted_dir_begin() const {
- return SearchDirs.begin();
- }
- search_dir_iterator quoted_dir_end() const {
- return SearchDirs.begin() + AngledDirIdx;
- }
-
- search_dir_iterator angled_dir_begin() const {
- return SearchDirs.begin() + AngledDirIdx;
- }
- search_dir_iterator angled_dir_end() const {
- return SearchDirs.begin() + SystemDirIdx;
- }
-
- search_dir_iterator system_dir_begin() const {
- return SearchDirs.begin() + SystemDirIdx;
- }
- search_dir_iterator system_dir_end() const { return SearchDirs.end(); }
-
- /// \brief Retrieve a uniqued framework name.
- StringRef getUniqueFrameworkName(StringRef Framework);
-
- void PrintStats();
-
- size_t getTotalMemory() const;
-
- static std::string NormalizeDashIncludePath(StringRef File,
- FileManager &FileMgr);
-
-private:
- /// \brief Describes what happened when we tried to load a module map file.
- enum LoadModuleMapResult {
- /// \brief The module map file had already been loaded.
- LMM_AlreadyLoaded,
- /// \brief The module map file was loaded by this invocation.
- LMM_NewlyLoaded,
- /// \brief There is was directory with the given name.
- LMM_NoDirectory,
- /// \brief There was either no module map file or the module map file was
- /// invalid.
- LMM_InvalidModuleMap
- };
-
- LoadModuleMapResult loadModuleMapFileImpl(const FileEntry *File,
- bool IsSystem,
- const DirectoryEntry *Dir);
-
- /// \brief Try to load the module map file in the given directory.
- ///
- /// \param DirName The name of the directory where we will look for a module
- /// map file.
- /// \param IsSystem Whether this is a system header directory.
- /// \param IsFramework Whether this is a framework directory.
- ///
- /// \returns The result of attempting to load the module map file from the
- /// named directory.
- LoadModuleMapResult loadModuleMapFile(StringRef DirName, bool IsSystem,
- bool IsFramework);
-
- /// \brief Try to load the module map file in the given directory.
- ///
- /// \param Dir The directory where we will look for a module map file.
- /// \param IsSystem Whether this is a system header directory.
- /// \param IsFramework Whether this is a framework directory.
- ///
- /// \returns The result of attempting to load the module map file from the
- /// named directory.
- LoadModuleMapResult loadModuleMapFile(const DirectoryEntry *Dir,
- bool IsSystem, bool IsFramework);
-};
-
-} // end namespace clang
-
-#endif
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