| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___TYPE_TRAITS_RESULT_OF_H |
| #define _LIBCPP___TYPE_TRAITS_RESULT_OF_H |
| |
| #include <__config> |
| #include <__functional/invoke.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| // result_of |
| |
| #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS) |
| template <class _Callable> class _LIBCPP_DEPRECATED_IN_CXX17 result_of; |
| |
| template <class _Fp, class ..._Args> |
| class _LIBCPP_TEMPLATE_VIS result_of<_Fp(_Args...)> |
| : public __invoke_of<_Fp, _Args...> |
| { |
| }; |
| |
| #if _LIBCPP_STD_VER > 11 |
| template <class _Tp> using result_of_t _LIBCPP_DEPRECATED_IN_CXX17 = typename result_of<_Tp>::type; |
| #endif // _LIBCPP_STD_VER > 11 |
| #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___TYPE_TRAITS_RESULT_OF_H |
