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| //===- ToolOutputFile.h - Output files for compiler-like tools -----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the ToolOutputFile class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_TOOLOUTPUTFILE_H
#define LLVM_SUPPORT_TOOLOUTPUTFILE_H
#include "llvm/Support/raw_ostream.h"
namespace llvm {
/// This class contains a raw_fd_ostream and adds a few extra features commonly
/// needed for compiler-like tool output files:
/// - The file is automatically deleted if the process is killed.
/// - The file is automatically deleted when the ToolOutputFile
/// object is destroyed unless the client calls keep().
class ToolOutputFile {
/// This class is declared before the raw_fd_ostream so that it is constructed
/// before the raw_fd_ostream is constructed and destructed after the
/// raw_fd_ostream is destructed. It installs cleanups in its constructor and
/// uninstalls them in its destructor.
class CleanupInstaller {
/// The name of the file.
std::string Filename;
public:
/// The flag which indicates whether we should not delete the file.
bool Keep;
explicit CleanupInstaller(StringRef Filename);
~CleanupInstaller();
} Installer;
/// The contained stream. This is intentionally declared after Installer.
raw_fd_ostream OS;
public:
/// This constructor's arguments are passed to raw_fd_ostream's
/// constructor.
ToolOutputFile(StringRef Filename, std::error_code &EC,
sys::fs::OpenFlags Flags);
ToolOutputFile(StringRef Filename, int FD);
/// Return the contained raw_fd_ostream.
raw_fd_ostream &os() { return OS; }
/// Indicate that the tool's job wrt this output file has been successful and
/// the file should not be deleted.
void keep() { Installer.Keep = true; }
};
} // end llvm namespace
#endif
|