By default, this delegates all calls to the underlying file system. More...

#include "llvm/Support/VirtualFileSystem.h"

Inheritance diagram for llvm::vfs::ProxyFileSystem:

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Collaboration diagram for llvm::vfs::ProxyFileSystem:

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Public Member Functions
	ProxyFileSystem (IntrusiveRefCntPtr< FileSystem > FS)

llvm::ErrorOr< Status >	status (const Twine &Path) override
	Get the status of the entry at `Path`, if one exists.

llvm::ErrorOr< std::unique_ptr< File > >	openFileForRead (const Twine &Path) override
	Get a `File` object for the file at `Path`, if one exists.

directory_iterator	dir_begin (const Twine &Dir, std::error_code &EC) override
	Get a directory_iterator for `Dir`.

llvm::ErrorOr< std::string >	getCurrentWorkingDirectory () const override
	Get the working directory of this file system.

std::error_code	setCurrentWorkingDirectory (const Twine &Path) override
	Set the working directory.

std::error_code	getRealPath (const Twine &Path, SmallVectorImpl< char > &Output) const override
	Gets real path of `Path` e.g.

std::error_code	isLocal (const Twine &Path, bool &Result) override
	Is the file mounted on a local filesystem?

Public Member Functions inherited from llvm::vfs::FileSystem
virtual	~FileSystem ()

virtual llvm::ErrorOr< Status >	status (const Twine &Path)=0
	Get the status of the entry at `Path`, if one exists.

virtual llvm::ErrorOr< std::unique_ptr< File > >	openFileForRead (const Twine &Path)=0
	Get a `File` object for the file at `Path`, if one exists.

llvm::ErrorOr< std::unique_ptr< llvm::MemoryBuffer > >	getBufferForFile (const Twine &Name, int64_t FileSize=-1, bool RequiresNullTerminator=true, bool IsVolatile=false)
	This is a convenience method that opens a file, gets its content and then closes the file.

virtual directory_iterator	dir_begin (const Twine &Dir, std::error_code &EC)=0
	Get a directory_iterator for `Dir`.

virtual std::error_code	setCurrentWorkingDirectory (const Twine &Path)=0
	Set the working directory.

virtual llvm::ErrorOr< std::string >	getCurrentWorkingDirectory () const =0
	Get the working directory of this file system.

virtual std::error_code	getRealPath (const Twine &Path, SmallVectorImpl< char > &Output) const
	Gets real path of `Path` e.g.

bool	exists (const Twine &Path)
	Check whether a file exists. Provided for convenience.

virtual std::error_code	isLocal (const Twine &Path, bool &Result)
	Is the file mounted on a local filesystem?

virtual std::error_code	makeAbsolute (SmallVectorImpl< char > &Path) const
	Make Path an absolute path.

void	print (raw_ostream &OS, PrintType Type=PrintType::Contents, unsigned IndentLevel=0) const

LLVM_DUMP_METHOD void	dump () const

Public Member Functions inherited from llvm::ThreadSafeRefCountedBase< FileSystem >
void	Retain () const

void	Release () const

Protected Member Functions
FileSystem &	getUnderlyingFS () const

Protected Member Functions inherited from llvm::vfs::FileSystem
virtual void	printImpl (raw_ostream &OS, PrintType Type, unsigned IndentLevel) const

void	printIndent (raw_ostream &OS, unsigned IndentLevel) const

Protected Member Functions inherited from llvm::ThreadSafeRefCountedBase< FileSystem >
	ThreadSafeRefCountedBase ()=default

	ThreadSafeRefCountedBase (const ThreadSafeRefCountedBase &)

ThreadSafeRefCountedBase &	operator= (const ThreadSafeRefCountedBase &)=delete

	~ThreadSafeRefCountedBase ()

Additional Inherited Members
Public Types inherited from llvm::vfs::FileSystem
enum class	PrintType { Summary , Contents , RecursiveContents }

Detailed Description

By default, this delegates all calls to the underlying file system.

This is useful when derived file systems want to override some calls and still proxy other calls.

Definition at line 423 of file VirtualFileSystem.h.

Constructor & Destructor Documentation

◆ ProxyFileSystem()

llvm::vfs::ProxyFileSystem::ProxyFileSystem ( IntrusiveRefCntPtr< FileSystem > FS )

inlineexplicit

Definition at line 425 of file VirtualFileSystem.h.

Member Function Documentation

◆ dir_begin()

directory_iterator llvm::vfs::ProxyFileSystem::dir_begin	(	const Twine &	Dir,
		std::error_code &	EC
	)

inlineoverridevirtual

Get a directory_iterator for Dir.

Note: The 'end' iterator is directory_iterator().

Implements llvm::vfs::FileSystem.

Definition at line 435 of file VirtualFileSystem.h.

◆ getCurrentWorkingDirectory()

llvm::ErrorOr< std::string > llvm::vfs::ProxyFileSystem::getCurrentWorkingDirectory ( ) const

inlineoverridevirtual

Get the working directory of this file system.

Implements llvm::vfs::FileSystem.

Definition at line 438 of file VirtualFileSystem.h.

◆ getRealPath()

std::error_code llvm::vfs::ProxyFileSystem::getRealPath	(	const Twine &	Path,
		SmallVectorImpl< char > &	Output
	)		const

inlineoverridevirtual

Gets real path of Path e.g.

collapse all . and .. patterns, resolve symlinks. For real file system, this uses llvm::sys::fs::real_path. This returns errc::operation_not_permitted if not implemented by subclass.

Reimplemented from llvm::vfs::FileSystem.

Definition at line 444 of file VirtualFileSystem.h.

◆ getUnderlyingFS()

FileSystem & llvm::vfs::ProxyFileSystem::getUnderlyingFS ( ) const

inlineprotected

Definition at line 453 of file VirtualFileSystem.h.

◆ isLocal()

std::error_code llvm::vfs::ProxyFileSystem::isLocal	(	const Twine &	Path,
		bool &	Result
	)

inlineoverridevirtual

Is the file mounted on a local filesystem?

Reimplemented from llvm::vfs::FileSystem.

Definition at line 448 of file VirtualFileSystem.h.

◆ openFileForRead()

llvm::ErrorOr< std::unique_ptr< File > > llvm::vfs::ProxyFileSystem::openFileForRead ( const Twine & Path )

inlineoverridevirtual

Get a File object for the file at Path, if one exists.

Implements llvm::vfs::FileSystem.

Definition at line 432 of file VirtualFileSystem.h.

◆ setCurrentWorkingDirectory()

std::error_code llvm::vfs::ProxyFileSystem::setCurrentWorkingDirectory ( const Twine & Path )

inlineoverridevirtual

Set the working directory.

This will affect all following operations on this file system and may propagate down for nested file systems.

Implements llvm::vfs::FileSystem.

Definition at line 441 of file VirtualFileSystem.h.

◆ status()

llvm::ErrorOr< Status > llvm::vfs::ProxyFileSystem::status ( const Twine & Path )

inlineoverridevirtual

Get the status of the entry at Path, if one exists.

Implements llvm::vfs::FileSystem.

Definition at line 428 of file VirtualFileSystem.h.

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

include/llvm/Support/VirtualFileSystem.h
lib/Support/VirtualFileSystem.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ProxyFileSystem()

Member Function Documentation

◆ dir_begin()

◆ getCurrentWorkingDirectory()

◆ getRealPath()

◆ getUnderlyingFS()

◆ isLocal()

◆ openFileForRead()

◆ setCurrentWorkingDirectory()

◆ status()