| //===--- FileSystem.h - Extra helpers for manipulating files ----*- C++ -*-===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SWIFT_BASIC_FILESYSTEM_H |
| #define SWIFT_BASIC_FILESYSTEM_H |
| |
| #include "llvm/ADT/Twine.h" |
| #include <system_error> |
| |
| namespace swift { |
| /// Moves a file from \p source to \p destination, unless there is already |
| /// a file at \p destination that contains the same data as \p source. |
| /// |
| /// In the latter case, the file at \p source is deleted. If an error occurs, |
| /// the file at \p source will still be present at \p source. |
| std::error_code moveFileIfDifferent(const llvm::Twine &source, |
| const llvm::Twine &destination); |
| } // end namespace swift |
| |
| #endif // SWIFT_BASIC_FILESYSTEM_H |
