clang::HeaderSearch Class Reference

Encapsulates the information needed to find the file referenced by a #include or #include_next, (sub-)framework lookup, etc. More...

#include "clang/Lex/HeaderSearch.h"

Public Types
using	search_dir_iterator = std::vector< DirectoryLookup >::const_iterator

Public Member Functions
	HeaderSearch (std::shared_ptr< HeaderSearchOptions > HSOpts, SourceManager &SourceMgr, DiagnosticsEngine &Diags, const LangOptions &LangOpts, const TargetInfo *Target)
	HeaderSearch (const HeaderSearch &)=delete
HeaderSearch &	operator= (const HeaderSearch &)=delete
HeaderSearchOptions &	getHeaderSearchOpts () const
	Retrieve the header-search options with which this header search was initialized. More...
FileManager &	getFileMgr () const
DiagnosticsEngine &	getDiags () const
void	SetSearchPaths (const std::vector< DirectoryLookup > &dirs, unsigned angledDirIdx, unsigned systemDirIdx, bool noCurDirSearch)
	Interface for setting the file search paths. More...
void	AddSearchPath (const DirectoryLookup &dir, bool isAngled)
	Add an additional search path. More...
void	SetSystemHeaderPrefixes (ArrayRef< std::pair< std::string, bool >> P)
	Set the list of system header prefixes. More...
bool	HasIncludeAliasMap () const
	Checks whether the map exists or not. More...
void	AddIncludeAlias (StringRef Source, StringRef Dest)
	Map the source include name to the dest include name. More...
StringRef	MapHeaderToIncludeAlias (StringRef Source)
	Maps one header file name to a different header file name, for use with the include_alias pragma. More...
void	setModuleCachePath (StringRef CachePath)
	Set the path to the module cache. More...
StringRef	getModuleCachePath () const
	Retrieve the path to the module cache. More...
void	setDirectoryHasModuleMap (const DirectoryEntry *Dir)
	Consider modules when including files from this directory. More...
void	ClearFileInfo ()
	Forget everything we know about headers so far. More...
void	SetExternalLookup (ExternalPreprocessorSource *EPS)
ExternalPreprocessorSource *	getExternalLookup () const
void	SetExternalSource (ExternalHeaderFileInfoSource *ES)
	Set the external source of header information. More...
void	setTarget (const TargetInfo &Target)
	Set the target information for the header search, if not already known. More...
Optional< FileEntryRef >	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 *IsMapped, bool *IsFrameworkFound, bool SkipCache=false, bool BuildSystemModule=false)
	Given a "foo" or <foo> reference, look up the indicated file, return null on failure. More...
Optional< FileEntryRef >	LookupSubframeworkHeader (StringRef Filename, const FileEntry *ContextFileEnt, SmallVectorImpl< char > *SearchPath, SmallVectorImpl< char > *RelativePath, Module *RequestingModule, ModuleMap::KnownHeader *SuggestedModule)
	Look up a subframework for the specified #include file. More...
FrameworkCacheEntry &	LookupFrameworkCache (StringRef FWName)
	Look up the specified framework name in our framework cache. More...
bool	ShouldEnterIncludeFile (Preprocessor &PP, const FileEntry *File, bool isImport, bool ModulesEnabled, Module *M)
	Mark the specified file as a target of a #include, #include_next, or #import directive. More...
SrcMgr::CharacteristicKind	getFileDirFlavor (const FileEntry *File)
	Return whether the specified file is a normal header, a system header, or a C++ friendly system header. More...
void	MarkFileIncludeOnce (const FileEntry *File)
	Mark the specified file as a "once only" file, e.g. More...
void	MarkFileSystemHeader (const FileEntry *File)
	Mark the specified file as a system header, e.g. More...
void	MarkFileModuleHeader (const FileEntry *FE, ModuleMap::ModuleHeaderRole Role, bool isCompilingModuleHeader)
	Mark the specified file as part of a module. More...
void	IncrementIncludeCount (const FileEntry *File)
	Increment the count for the number of times the specified FileEntry has been entered. More...
void	SetFileControllingMacro (const FileEntry *File, const IdentifierInfo *ControllingMacro)
	Mark the specified file as having a controlling macro. More...
bool	FirstTimeLexingFile (const FileEntry *File)
	Return true if this is the first time encountering this header. More...
bool	isFileMultipleIncludeGuarded (const FileEntry *File)
	Determine whether this file is intended to be safe from multiple inclusions, e.g., it has #pragma once or a controlling macro. More...
const HeaderMap *	CreateHeaderMap (const FileEntry *FE)
	This method returns a HeaderMap for the specified FileEntry, uniquing them through the 'HeaderMaps' datastructure. More...
void	getHeaderMapFileNames (SmallVectorImpl< std::string > &Names) const
	Get filenames for all registered header maps. More...
std::string	getCachedModuleFileName (Module *Module)
	Retrieve the name of the cached module file that should be used to load the given module. More...
std::string	getPrebuiltModuleFileName (StringRef ModuleName, bool FileMapOnly=false)
	Retrieve the name of the prebuilt module file that should be used to load a module with the given name. More...
std::string	getCachedModuleFileName (StringRef ModuleName, StringRef ModuleMapPath)
	Retrieve the name of the (to-be-)cached module file that should be used to load a module with the given name. More...
Module *	lookupModule (StringRef ModuleName, bool AllowSearch=true, bool AllowExtraModuleMapSearch=false)
	Lookup a module Search for a module with the given name. More...
const FileEntry *	lookupModuleMapFile (const DirectoryEntry *Dir, bool IsFramework)
	Try to find a module map file in the given directory, returning nullptr if none is found. More...
void	IncrementFrameworkLookupCount ()
bool	hasModuleMap (StringRef Filename, const DirectoryEntry *Root, bool IsSystem)
	Determine whether there is a module map that may map the header with the given file name to a (sub)module. More...
ModuleMap::KnownHeader	findModuleForHeader (const FileEntry *File, bool AllowTextual=false) const
	Retrieve the module that corresponds to the given file, if any. More...
bool	loadModuleMapFile (const FileEntry *File, bool IsSystem, FileID ID=FileID(), unsigned *Offset=nullptr, StringRef OriginalModuleMapFile=StringRef())
	Read the contents of the given module map file. More...
void	collectAllModules (SmallVectorImpl< Module *> &Modules)
	Collect the set of all known, top-level modules. More...
void	loadTopLevelSystemModules ()
	Load all known, top-level system modules. More...
ModuleMap &	getModuleMap ()
	Retrieve the module map. More...
const ModuleMap &	getModuleMap () const
	Retrieve the module map. More...
unsigned	header_file_size () const
HeaderFileInfo &	getFileInfo (const FileEntry *FE)
	Return the HeaderFileInfo structure for the specified FileEntry, in preparation for updating it in some way. More...
const HeaderFileInfo *	getExistingFileInfo (const FileEntry *FE, bool WantExternal=true) const
	Return the HeaderFileInfo structure for the specified FileEntry, if it has ever been filled in. More...
search_dir_iterator	search_dir_begin () const
search_dir_iterator	search_dir_end () const
unsigned	search_dir_size () const
search_dir_iterator	quoted_dir_begin () const
search_dir_iterator	quoted_dir_end () const
search_dir_iterator	angled_dir_begin () const
search_dir_iterator	angled_dir_end () const
search_dir_iterator	system_dir_begin () const
search_dir_iterator	system_dir_end () const
StringRef	getUniqueFrameworkName (StringRef Framework)
	Retrieve a uniqued framework name. More...
std::string	suggestPathToFileForDiagnostics (const FileEntry *File, llvm::StringRef MainFile, bool *IsSystem=nullptr)
	Suggest a path by which the specified file could be found, for use in diagnostics to suggest a #include. More...
std::string	suggestPathToFileForDiagnostics (llvm::StringRef File, llvm::StringRef WorkingDir, llvm::StringRef MainFile, bool *IsSystem=nullptr)
	Suggest a path by which the specified file could be found, for use in diagnostics to suggest a #include. More...
void	PrintStats ()
size_t	getTotalMemory () const

Friends
class	DirectoryLookup

Detailed Description

Encapsulates the information needed to find the file referenced by a #include or #include_next, (sub-)framework lookup, etc.

Definition at line 158 of file HeaderSearch.h.

Member Typedef Documentation

search_dir_iterator

using clang::HeaderSearch::search_dir_iterator = std::vector<DirectoryLookup>::const_iterator

Definition at line 679 of file HeaderSearch.h.

Constructor & Destructor Documentation

HeaderSearch() [1/2]

HeaderSearch::HeaderSearch	(	std::shared_ptr< HeaderSearchOptions >	HSOpts,
		SourceManager &	SourceMgr,
		DiagnosticsEngine &	Diags,
		const LangOptions &	LangOpts,
		const TargetInfo *	Target
	)

Definition at line 70 of file HeaderSearch.cpp.

HeaderSearch() [2/2]

clang::HeaderSearch::HeaderSearch ( const HeaderSearch &  )

delete

Member Function Documentation

AddIncludeAlias()

void clang::HeaderSearch::AddIncludeAlias ( StringRef  Source, StringRef  Dest  )

inline

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.

Definition at line 308 of file HeaderSearch.h.

AddSearchPath()

void clang::HeaderSearch::AddSearchPath ( const DirectoryLookup &  dir, bool  isAngled  )

inline

Add an additional search path.

Definition at line 288 of file HeaderSearch.h.

angled_dir_begin()

search_dir_iterator clang::HeaderSearch::angled_dir_begin ( ) const

inline

Definition at line 693 of file HeaderSearch.h.

angled_dir_end()

search_dir_iterator clang::HeaderSearch::angled_dir_end ( ) const

inline

Definition at line 697 of file HeaderSearch.h.

ClearFileInfo()

void clang::HeaderSearch::ClearFileInfo ( )

inline

Forget everything we know about headers so far.

Definition at line 342 of file HeaderSearch.h.

collectAllModules()

void HeaderSearch::collectAllModules

(

SmallVectorImpl< Module *> &

Modules

)

Collect the set of all known, top-level modules.

Parameters

Modules

Will be filled with the set of known, top-level modules.

Definition at line 1614 of file HeaderSearch.cpp.

References getName(), and loadModuleMapFile().

CreateHeaderMap()

const HeaderMap * HeaderSearch::CreateHeaderMap

(

const FileEntry *

FE

)

This method returns a HeaderMap for the specified FileEntry, uniquing them through the 'HeaderMaps' datastructure.

CreateHeaderMap - This method returns a HeaderMap for the specified FileEntry, uniquing them through the 'HeaderMaps' datastructure.

Definition at line 102 of file HeaderSearch.cpp.

References clang::HeaderMap::Create().

findModuleForHeader()

ModuleMap::KnownHeader HeaderSearch::findModuleForHeader	(	const FileEntry *	File,
		bool	AllowTextual = false
	)		const

Retrieve the module that corresponds to the given file, if any.

Parameters

File	The header that we wish to map to a module.
AllowTextual	Whether we want to find textual headers too.

Definition at line 1376 of file HeaderSearch.cpp.

References getExistingFileInfo().

Referenced by clang::VerifyDiagnosticConsumer::HandleDiagnostic(), and suggestModule().

FirstTimeLexingFile()

bool clang::HeaderSearch::FirstTimeLexingFile ( const FileEntry *  File )

inline

Return true if this is the first time encountering this header.

Definition at line 474 of file HeaderSearch.h.

getCachedModuleFileName() [1/2]

std::string HeaderSearch::getCachedModuleFileName

(

Module *

Module

)

Retrieve the name of the cached module file that should be used to load the given module.

Parameters

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.

Definition at line 128 of file HeaderSearch.cpp.

References getModuleMap(), clang::ModuleMap::getModuleMapFileForUniquing(), clang::FileEntry::getName(), and clang::Module::Name.

Referenced by clang::GenerateModuleAction::CreateASTConsumer().

getCachedModuleFileName() [2/2]

std::string HeaderSearch::getCachedModuleFileName	(	StringRef	ModuleName,
		StringRef	ModuleMapPath
	)

Retrieve the name of the (to-be-)cached module file that should be used to load a module with the given name.

Parameters

ModuleName	The module whose module file name will be returned.
ModuleMapPath	A path that when combined with 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.

Definition at line 156 of file HeaderSearch.cpp.

References clang::FileManager::getCanonicalName(), clang::FileManager::getDirectory(), getModuleCachePath(), clang::format::hash_combine(), Parent, and clang::Result.

getDiags()

DiagnosticsEngine& clang::HeaderSearch::getDiags ( ) const

inline

Definition at line 272 of file HeaderSearch.h.

getExistingFileInfo()

const HeaderFileInfo * HeaderSearch::getExistingFileInfo	(	const FileEntry *	FE,
		bool	WantExternal = true
	)		const

Return the HeaderFileInfo structure for the specified FileEntry, if it has ever been filled in.

Parameters

WantExternal

Whether the caller wants purely-external header file info (where External is true).

Definition at line 1170 of file HeaderSearch.cpp.

References clang::HeaderFileInfo::External, clang::FileEntry::getUID(), clang::HeaderFileInfo::IsValid, mergeHeaderFileInfo(), and clang::HeaderFileInfo::Resolved.

Referenced by CreateSLocExpansionAbbrev(), findModuleForHeader(), isFileMultipleIncludeGuarded(), and MarkFileModuleHeader().

getExternalLookup()

ExternalPreprocessorSource* clang::HeaderSearch::getExternalLookup ( ) const

inline

Definition at line 350 of file HeaderSearch.h.

getFileDirFlavor()

SrcMgr::CharacteristicKind clang::HeaderSearch::getFileDirFlavor ( const FileEntry *  File )

inline

Return whether the specified file is a normal header, a system header, or a C++ friendly system header.

Definition at line 435 of file HeaderSearch.h.

Referenced by EvaluateHasIncludeCommon().

getFileInfo()

HeaderFileInfo & HeaderSearch::getFileInfo

(

const FileEntry *

FE

)

Return the HeaderFileInfo structure for the specified FileEntry, in preparation for updating it in some way.

getFileInfo - Return the HeaderFileInfo structure for the specified FileEntry.

Definition at line 1147 of file HeaderSearch.cpp.

References clang::HeaderFileInfo::External, clang::FileEntry::getUID(), clang::HeaderFileInfo::IsValid, mergeHeaderFileInfo(), and clang::HeaderFileInfo::Resolved.

Referenced by LookupFile(), LookupSubframeworkHeader(), MarkFileModuleHeader(), and ShouldEnterIncludeFile().

getFileMgr()

FileManager& clang::HeaderSearch::getFileMgr ( ) const

inline

Definition at line 270 of file HeaderSearch.h.

Referenced by clang::ApplyHeaderSearchOptions(), CreateSLocExpansionAbbrev(), clang::DirectoryLookup::getName(), getPrebuiltModuleFileName(), clang::DirectoryLookup::LookupFile(), and needModuleLookup().

getHeaderMapFileNames()

void HeaderSearch::getHeaderMapFileNames

(

SmallVectorImpl< std::string > &

Names

)

const

Get filenames for all registered header maps.

Definition at line 122 of file HeaderSearch.cpp.

Referenced by collectHeaderMaps().

getHeaderSearchOpts()

HeaderSearchOptions& clang::HeaderSearch::getHeaderSearchOpts ( ) const

inline

Retrieve the header-search options with which this header search was initialized.

Definition at line 268 of file HeaderSearch.h.

Referenced by clang::CompilerInstance::createPCHExternalASTSource(), clang::ModuleMap::isBuiltinHeader(), and loadModuleMapFile().

getModuleCachePath()

StringRef clang::HeaderSearch::getModuleCachePath ( ) const

inline

Retrieve the path to the module cache.

Definition at line 334 of file HeaderSearch.h.

Referenced by clang::FrontendAction::Execute(), and getCachedModuleFileName().

getModuleMap() [1/2]

ModuleMap& clang::HeaderSearch::getModuleMap ( )

inline

Retrieve the module map.

Definition at line 660 of file HeaderSearch.h.

Referenced by clang::Sema::ActOnEndOfTranslationUnit(), clang::ApplyHeaderSearchOptions(), clang::DependencyCollector::attachToPreprocessor(), clang::ModuleDependencyCollector::attachToPreprocessor(), clang::FrontendAction::BeginSourceFile(), compileModuleImpl(), CreateSLocExpansionAbbrev(), getCachedModuleFileName(), getInputBufferForModule(), clang::Preprocessor::getModuleForLocation(), clang::Preprocessor::getModuleHeaderToIncludeForDiagnostics(), clang::Preprocessor::LexOnOffSwitch(), clang::CompilerInstance::loadGlobalModuleIndex(), clang::CompilerInstance::loadModuleFile(), clang::Preprocessor::LookupFile(), prepareToBuildModule(), and suggestModule().

getModuleMap() [2/2]

const ModuleMap& clang::HeaderSearch::getModuleMap ( ) const

inline

Retrieve the module map.

Definition at line 663 of file HeaderSearch.h.

getPrebuiltModuleFileName()

std::string HeaderSearch::getPrebuiltModuleFileName	(	StringRef	ModuleName,
		bool	FileMapOnly = false
	)

Retrieve the name of the prebuilt module file that should be used to load a module with the given name.

Parameters

ModuleName	The module whose module file name will be returned.
FileMapOnly	If true, then only look in the explicit module name

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.

Definition at line 134 of file HeaderSearch.cpp.

References getFileMgr(), clang::if(), and clang::Result.

getTotalMemory()

size_t HeaderSearch::getTotalMemory

(

)

const

Definition at line 1316 of file HeaderSearch.cpp.

getUniqueFrameworkName()

StringRef HeaderSearch::getUniqueFrameworkName

(

StringRef

Framework

)

Retrieve a uniqued framework name.

Definition at line 1324 of file HeaderSearch.cpp.

Referenced by LookupFile().

HasIncludeAliasMap()

bool clang::HeaderSearch::HasIncludeAliasMap ( ) const

inline

Checks whether the map exists or not.

Definition at line 302 of file HeaderSearch.h.

hasModuleMap()

bool HeaderSearch::hasModuleMap	(	StringRef	Filename,
		const DirectoryEntry *	Root,
		bool	IsSystem
	)

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.

Parameters

Filename	The name of the file.
Root	The "root" directory, at which we should stop looking for module maps.
IsSystem	Whether the directories we're looking at are system header directories.

Definition at line 1328 of file HeaderSearch.cpp.

References loadModuleMapFile().

Referenced by suggestModule().

header_file_size()

unsigned clang::HeaderSearch::header_file_size ( ) const

inline

Definition at line 665 of file HeaderSearch.h.

Referenced by CreateSLocExpansionAbbrev().

IncrementFrameworkLookupCount()

void clang::HeaderSearch::IncrementFrameworkLookupCount ( )

inline

Definition at line 547 of file HeaderSearch.h.

References Offset.

Referenced by needModuleLookup().

IncrementIncludeCount()

void clang::HeaderSearch::IncrementIncludeCount ( const FileEntry *  File )

inline

Increment the count for the number of times the specified FileEntry has been entered.

Definition at line 460 of file HeaderSearch.h.

Referenced by clang::Preprocessor::EnterMainSourceFile().

isFileMultipleIncludeGuarded()

bool HeaderSearch::isFileMultipleIncludeGuarded

(

const FileEntry *

File

)

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

Definition at line 1205 of file HeaderSearch.cpp.

References getExistingFileInfo().

loadModuleMapFile()

bool HeaderSearch::loadModuleMapFile	(	const FileEntry *	File,
		bool	IsSystem,
		FileID	ID = FileID(),
		unsigned *	Offset = nullptr,
		StringRef	OriginalModuleMapFile = StringRef()
	)

Read the contents of the given module map file.

Parameters

File	The module map file.
IsSystem	Whether this file is in a system header directory.
ID	If the module map file is already mapped (perhaps as part of processing a preprocessed module), the ID of the file.
Offset	[inout] An offset within ID to start parsing. On exit, filled by the end of the parsed contents (either EOF or the location of an end-of-module-map pragma).
OriginalModuleMapFile	The original path to the module map file, used to resolve paths within the module (this is required when building the module from preprocessed source).

Returns

true if an error occurred, false otherwise.

Definition at line 1460 of file HeaderSearch.cpp.

References clang::FileEntry::getDir(), getHeaderSearchOpts(), clang::DirectoryEntry::getName(), getPrivateModuleMap(), and Offset.

Referenced by clang::FrontendAction::BeginSourceFile(), collectAllModules(), hasModuleMap(), loadModuleMapForModuleBuild(), loadTopLevelSystemModules(), and lookupModule().

loadTopLevelSystemModules()

void HeaderSearch::loadTopLevelSystemModules

(

)

Load all known, top-level system modules.

Definition at line 1669 of file HeaderSearch.cpp.

References clang::DirectoryLookup::getDir(), clang::DirectoryEntry::getName(), clang::DirectoryLookup::haveSearchedAllModuleMaps(), clang::DirectoryLookup::isFramework(), clang::DirectoryLookup::isSystemHeaderDirectory(), loadModuleMapFile(), and clang::DirectoryLookup::setSearchedAllModuleMaps().

Referenced by clang::ModuleMap::isBuiltinHeader().

LookupFile()

Optional< FileEntryRef > HeaderSearch::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 *	IsMapped,
		bool *	IsFrameworkFound,
		bool	SkipCache = false,
		bool	BuildSystemModule = false
	)

Given a "foo" or <foo> reference, look up the indicated file, return null on failure.

LookupFile - 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.

Parameters

IncludeLoc	Used for diagnostics if valid.
isAngled	indicates whether the file reference is a <> reference.
CurDir	If non-null, the file was found in the specified directory search location. This is used to implement #include_next.
Includers	Indicates where the #including file(s) are, in case relative searches are needed. In reverse order of inclusion.
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.
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.
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.
IsMapped	If non-null, and the search involved header maps, set to true.
IsFrameworkFound	If non-null, will be set to true if a framework is found in any of searched SearchDirs. Will be set to false if a framework is found only through header maps. Doesn't guarantee the requested file is found.

isAngled indicates whether the file reference is for system #include's or not (i.e. using <> instead of ""). Includers, if non-empty, indicates where the #including file(s) are, in case a relative search is needed. Microsoft mode will pass all #including files.

Definition at line 715 of file HeaderSearch.cpp.

References clang::SrcMgr::C_System, clang::SrcMgr::C_User, checkMSVCHeaderSearch(), copyString(), diagnoseFrameworkInclude(), clang::HeaderFileInfo::DirInfo, false, Filename, clang::First, clang::HeaderFileInfo::Framework, clang::DirectoryLookup::getDirCharacteristic(), getFileInfo(), clang::FileEntry::getName(), getUniqueFrameworkName(), clang::HeaderFileInfo::IndexHeaderMapHeader, clang::DirectoryLookup::isIndexHeaderMap(), and clang::None.

Referenced by DetectEOL(), and clang::Preprocessor::LookupFile().

LookupFrameworkCache()

FrameworkCacheEntry& clang::HeaderSearch::LookupFrameworkCache ( StringRef  FWName )

inline

Look up the specified framework name in our framework cache.

Returns

The DirectoryEntry it is in if we know, null otherwise.

Definition at line 420 of file HeaderSearch.h.

References clang::HeaderFileInfo::isImport.

Referenced by needModuleLookup().

lookupModule()

Module * HeaderSearch::lookupModule	(	StringRef	ModuleName,
		bool	AllowSearch = true,
		bool	AllowExtraModuleMapSearch = false
	)

Lookup a module Search for a module with the given name.

Parameters

ModuleName	The name of the module we're looking for.
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.
AllowExtraModuleMapSearch	Whether we allow to search modulemaps in subdirectories.

Returns

The module with the given name.

Definition at line 195 of file HeaderSearch.cpp.

References clang::SrcMgr::C_User, clang::ModuleMap::findModule(), clang::FileManager::getDirectory(), and loadModuleMapFile().

Referenced by clang::FrontendAction::getCurrentModule(), clang::Preprocessor::getCurrentModule(), clang::Preprocessor::getModuleForLocation(), getTopImportImplicitModule(), clang::PCHGenerator::HandleTranslationUnit(), and prepareToBuildModule().

lookupModuleMapFile()

const FileEntry * HeaderSearch::lookupModuleMapFile	(	const DirectoryEntry *	Dir,
		bool	IsFramework
	)

Try to find a module map file in the given directory, returning nullptr if none is found.

Definition at line 1538 of file HeaderSearch.cpp.

References clang::DirectoryEntry::getName().

Referenced by clang::ModuleMap::inferFrameworkModule().

LookupSubframeworkHeader()

Optional< FileEntryRef > HeaderSearch::LookupSubframeworkHeader	(	StringRef	Filename,
		const FileEntry *	ContextFileEnt,
		SmallVectorImpl< char > *	SearchPath,
		SmallVectorImpl< char > *	RelativePath,
		Module *	RequestingModule,
		ModuleMap::KnownHeader *	SuggestedModule
	)

Look up a subframework for the specified #include file.

LookupSubframeworkHeader - 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.

Definition at line 1006 of file HeaderSearch.cpp.

References clang::HeaderFileInfo::DirInfo, getFileInfo(), clang::FileEntry::getName(), and clang::None.

Referenced by clang::Preprocessor::LookupFile().

MapHeaderToIncludeAlias()

StringRef clang::HeaderSearch::MapHeaderToIncludeAlias ( StringRef  Source )

inline

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.

Definition at line 318 of file HeaderSearch.h.

MarkFileIncludeOnce()

void clang::HeaderSearch::MarkFileIncludeOnce ( const FileEntry *  File )

inline

Mark the specified file as a "once only" file, e.g.

due to #pragma once.

Definition at line 441 of file HeaderSearch.h.

References clang::HeaderFileInfo::isImport, and clang::HeaderFileInfo::isPragmaOnce.

MarkFileModuleHeader()

void HeaderSearch::MarkFileModuleHeader	(	const FileEntry *	FE,
		ModuleMap::ModuleHeaderRole	Role,
		bool	isCompilingModuleHeader
	)

Mark the specified file as part of a module.

Definition at line 1213 of file HeaderSearch.cpp.

References getExistingFileInfo(), getFileInfo(), and clang::ModuleMap::TextualHeader.

Referenced by clang::ModuleMap::addHeader().

MarkFileSystemHeader()

void clang::HeaderSearch::MarkFileSystemHeader ( const FileEntry *  File )

inline

Mark the specified file as a system header, e.g.

due to #pragma GCC system_header.

Definition at line 449 of file HeaderSearch.h.

References clang::SrcMgr::C_System, and clang::HeaderFileInfo::isCompilingModuleHeader.

operator=()

HeaderSearch& clang::HeaderSearch::operator= ( const HeaderSearch &  )

delete

PrintStats()

void HeaderSearch::PrintStats

(

)

Definition at line 78 of file HeaderSearch.cpp.

Referenced by clang::FrontendAction::EndSourceFile().

quoted_dir_begin()

search_dir_iterator clang::HeaderSearch::quoted_dir_begin ( ) const

inline

Definition at line 685 of file HeaderSearch.h.

quoted_dir_end()

search_dir_iterator clang::HeaderSearch::quoted_dir_end ( ) const

inline

Definition at line 689 of file HeaderSearch.h.

search_dir_begin()

search_dir_iterator clang::HeaderSearch::search_dir_begin ( ) const

inline

Definition at line 681 of file HeaderSearch.h.

search_dir_end()

search_dir_iterator clang::HeaderSearch::search_dir_end ( ) const

inline

Definition at line 682 of file HeaderSearch.h.

search_dir_size()

unsigned clang::HeaderSearch::search_dir_size ( ) const

inline

Definition at line 683 of file HeaderSearch.h.

setDirectoryHasModuleMap()

void clang::HeaderSearch::setDirectoryHasModuleMap ( const DirectoryEntry *  Dir )

inline

Consider modules when including files from this directory.

Definition at line 337 of file HeaderSearch.h.

SetExternalLookup()

void clang::HeaderSearch::SetExternalLookup ( ExternalPreprocessorSource *  EPS )

inline

Definition at line 346 of file HeaderSearch.h.

SetExternalSource()

void clang::HeaderSearch::SetExternalSource ( ExternalHeaderFileInfoSource *  ES )

inline

Set the external source of header information.

Definition at line 355 of file HeaderSearch.h.

References Filename, and clang::Target.

SetFileControllingMacro()

void clang::HeaderSearch::SetFileControllingMacro ( const FileEntry *  File, const IdentifierInfo *  ControllingMacro  )

inline

Mark the specified file as having a controlling macro.

This is used by the multiple-include optimization to eliminate no-op #includes.

Definition at line 468 of file HeaderSearch.h.

References clang::HeaderFileInfo::ControllingMacro.

setModuleCachePath()

void clang::HeaderSearch::setModuleCachePath ( StringRef  CachePath )

inline

Set the path to the module cache.

Definition at line 329 of file HeaderSearch.h.

SetSearchPaths()

void clang::HeaderSearch::SetSearchPaths ( const std::vector< DirectoryLookup > &  dirs, unsigned  angledDirIdx, unsigned  systemDirIdx, bool  noCurDirSearch  )

inline

Interface for setting the file search paths.

Definition at line 275 of file HeaderSearch.h.

SetSystemHeaderPrefixes()

void clang::HeaderSearch::SetSystemHeaderPrefixes ( ArrayRef< std::pair< std::string, bool >>  P )

inline

Set the list of system header prefixes.

Definition at line 297 of file HeaderSearch.h.

References P.

setTarget()

void HeaderSearch::setTarget

(

const TargetInfo &

Target

)

Set the target information for the header search, if not already known.

Definition at line 613 of file HeaderSearch.cpp.

References clang::ModuleMap::setTarget().

Referenced by clang::Preprocessor::Initialize().

ShouldEnterIncludeFile()

bool HeaderSearch::ShouldEnterIncludeFile	(	Preprocessor &	PP,
		const FileEntry *	File,
		bool	isImport,
		bool	ModulesEnabled,
		Module *	M
	)

Mark the specified file as a target of a #include, #include_next, or #import directive.

Returns

false if #including the file will have no effect or true if we should include it.

Definition at line 1232 of file HeaderSearch.cpp.

References clang::HeaderFileInfo::getControllingMacro(), clang::FileEntry::getDir(), getFileInfo(), clang::FileEntry::getName(), clang::ModuleMap::isBuiltinHeader(), clang::HeaderFileInfo::isCompilingModuleHeader, clang::HeaderFileInfo::isImport, clang::Preprocessor::isMacroDefined(), clang::Preprocessor::isMacroDefinedInLocalModule(), clang::HeaderFileInfo::isModuleHeader, and clang::HeaderFileInfo::NumIncludes.

suggestPathToFileForDiagnostics() [1/2]

std::string HeaderSearch::suggestPathToFileForDiagnostics	(	const FileEntry *	File,
		llvm::StringRef	MainFile,
		bool *	IsSystem = nullptr
	)

Suggest a path by which the specified file could be found, for use in diagnostics to suggest a #include.

Returned path will only contain forward slashes as separators. MainFile is the absolute path of the file that we are generating the diagnostics for. It will try to shorten the path using MainFile location, if none of the include search directories were prefix of File.

Parameters

IsSystem

If non-null, filled in to indicate whether the suggested path is relative to a system header directory.

Definition at line 1711 of file HeaderSearch.cpp.

References clang::FileEntry::getName().

Referenced by getIncludeStringForHeader().

suggestPathToFileForDiagnostics() [2/2]

std::string HeaderSearch::suggestPathToFileForDiagnostics	(	llvm::StringRef	File,
		llvm::StringRef	WorkingDir,
		llvm::StringRef	MainFile,
		bool *	IsSystem = nullptr
	)

Suggest a path by which the specified file could be found, for use in diagnostics to suggest a #include.

Returned path will only contain forward slashes as separators. MainFile is the absolute path of the file that we are generating the diagnostics for. It will try to shorten the path using MainFile location, if none of the include search directories were prefix of File.

Parameters

WorkingDir

If non-empty, this will be prepended to search directory paths that are relative.

Definition at line 1720 of file HeaderSearch.cpp.

References clang::DirectoryEntry::getName().

system_dir_begin()

search_dir_iterator clang::HeaderSearch::system_dir_begin ( ) const

inline

Definition at line 701 of file HeaderSearch.h.

system_dir_end()

search_dir_iterator clang::HeaderSearch::system_dir_end ( ) const

inline

Definition at line 705 of file HeaderSearch.h.

References clang::HeaderFileInfo::Framework, and Offset.

Friends And Related Function Documentation

DirectoryLookup

friend class DirectoryLookup

friend

Definition at line 159 of file HeaderSearch.h.

---

The documentation for this class was generated from the following files:

• include/clang/Lex/HeaderSearch.h
• lib/Lex/HeaderSearch.cpp