mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
93a7fe8d08
function_ref causes calls to the function to be ambiguous, breaking compilation. Reverting for now. llvm-svn: 372202
116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
//===- llvm/Support/FileUtilities.h - File System Utilities -----*- C++ -*-===//
|
|
//
|
|
// 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 a family of utility functions which are useful for doing
|
|
// various things with files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_FILEUTILITIES_H
|
|
#define LLVM_SUPPORT_FILEUTILITIES_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/Errc.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/Path.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// DiffFilesWithTolerance - Compare the two files specified, returning 0 if
|
|
/// the files match, 1 if they are different, and 2 if there is a file error.
|
|
/// This function allows you to specify an absolute and relative FP error that
|
|
/// is allowed to exist. If you specify a string to fill in for the error
|
|
/// option, it will set the string to an error message if an error occurs, or
|
|
/// if the files are different.
|
|
///
|
|
int DiffFilesWithTolerance(StringRef FileA,
|
|
StringRef FileB,
|
|
double AbsTol, double RelTol,
|
|
std::string *Error = nullptr);
|
|
|
|
|
|
/// FileRemover - This class is a simple object meant to be stack allocated.
|
|
/// If an exception is thrown from a region, the object removes the filename
|
|
/// specified (if deleteIt is true).
|
|
///
|
|
class FileRemover {
|
|
SmallString<128> Filename;
|
|
bool DeleteIt;
|
|
public:
|
|
FileRemover() : DeleteIt(false) {}
|
|
|
|
explicit FileRemover(const Twine& filename, bool deleteIt = true)
|
|
: DeleteIt(deleteIt) {
|
|
filename.toVector(Filename);
|
|
}
|
|
|
|
~FileRemover() {
|
|
if (DeleteIt) {
|
|
// Ignore problems deleting the file.
|
|
sys::fs::remove(Filename);
|
|
}
|
|
}
|
|
|
|
/// setFile - Give ownership of the file to the FileRemover so it will
|
|
/// be removed when the object is destroyed. If the FileRemover already
|
|
/// had ownership of a file, remove it first.
|
|
void setFile(const Twine& filename, bool deleteIt = true) {
|
|
if (DeleteIt) {
|
|
// Ignore problems deleting the file.
|
|
sys::fs::remove(Filename);
|
|
}
|
|
|
|
Filename.clear();
|
|
filename.toVector(Filename);
|
|
DeleteIt = deleteIt;
|
|
}
|
|
|
|
/// releaseFile - Take ownership of the file away from the FileRemover so it
|
|
/// will not be removed when the object is destroyed.
|
|
void releaseFile() { DeleteIt = false; }
|
|
};
|
|
|
|
enum class atomic_write_error {
|
|
failed_to_create_uniq_file = 0,
|
|
output_stream_error,
|
|
failed_to_rename_temp_file
|
|
};
|
|
|
|
class AtomicFileWriteError : public llvm::ErrorInfo<AtomicFileWriteError> {
|
|
public:
|
|
AtomicFileWriteError(atomic_write_error Error) : Error(Error) {}
|
|
|
|
void log(raw_ostream &OS) const override;
|
|
|
|
const atomic_write_error Error;
|
|
static char ID;
|
|
|
|
private:
|
|
// Users are not expected to use error_code.
|
|
std::error_code convertToErrorCode() const override {
|
|
return llvm::inconvertibleErrorCode();
|
|
}
|
|
};
|
|
|
|
// atomic_write_error + whatever the Writer can return
|
|
|
|
/// Creates a unique file with name according to the given \p TempPathModel,
|
|
/// writes content of \p Buffer to the file and renames it to \p FinalPath.
|
|
///
|
|
/// \returns \c AtomicFileWriteError in case of error.
|
|
llvm::Error writeFileAtomically(StringRef TempPathModel, StringRef FinalPath,
|
|
StringRef Buffer);
|
|
|
|
llvm::Error
|
|
writeFileAtomically(StringRef TempPathModel, StringRef FinalPath,
|
|
std::function<llvm::Error(llvm::raw_ostream &)> Writer);
|
|
} // End llvm namespace
|
|
|
|
#endif
|