| //===-------- stl_extras.h - Useful STL related functions-------*- 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 is a part of the ORC runtime support library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef ORC_RT_STL_EXTRAS_H |
| #define ORC_RT_STL_EXTRAS_H |
| |
| #include <utility> |
| #include <tuple> |
| |
| namespace __orc_rt { |
| |
| /// Substitute for std::identity. |
| /// Switch to std::identity once we can use c++20. |
| template <class Ty> struct identity { |
| using is_transparent = void; |
| using argument_type = Ty; |
| |
| Ty &operator()(Ty &self) const { return self; } |
| const Ty &operator()(const Ty &self) const { return self; } |
| }; |
| |
| } // namespace __orc_rt |
| |
| #endif // ORC_RT_STL_EXTRAS |
