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| 1 | // -*- C++ -*- |
|---|---|
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 5 | // See https://llvm.org/LICENSE.txt for license information. |
| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef _LIBCPP___CXX03___FUNCTIONAL_MEM_FN_H |
| 11 | #define _LIBCPP___CXX03___FUNCTIONAL_MEM_FN_H |
| 12 | |
| 13 | #include <__cxx03/__config> |
| 14 | #include <__cxx03/__functional/binary_function.h> |
| 15 | #include <__cxx03/__functional/weak_result_type.h> |
| 16 | #include <__cxx03/__type_traits/invoke.h> |
| 17 | #include <__cxx03/__utility/forward.h> |
| 18 | |
| 19 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 20 | # pragma GCC system_header |
| 21 | #endif |
| 22 | |
| 23 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 24 | |
| 25 | template <class _Tp> |
| 26 | class __mem_fn : public __weak_result_type<_Tp> { |
| 27 | public: |
| 28 | // types |
| 29 | typedef _Tp type; |
| 30 | |
| 31 | private: |
| 32 | type __f_; |
| 33 | |
| 34 | public: |
| 35 | _LIBCPP_HIDE_FROM_ABI __mem_fn(type __f) _NOEXCEPT : __f_(__f) {} |
| 36 | |
| 37 | // invoke |
| 38 | template <class... _ArgTypes> |
| 39 | _LIBCPP_HIDE_FROM_ABI typename __invoke_return<type, _ArgTypes...>::type operator()(_ArgTypes&&... __args) const { |
| 40 | return std::__invoke(__f_, std::forward<_ArgTypes>(__args)...); |
| 41 | } |
| 42 | }; |
| 43 | |
| 44 | template <class _Rp, class _Tp> |
| 45 | inline _LIBCPP_HIDE_FROM_ABI __mem_fn<_Rp _Tp::*> mem_fn(_Rp _Tp::* __pm) _NOEXCEPT { |
| 46 | return __mem_fn<_Rp _Tp::*>(__pm); |
| 47 | } |
| 48 | |
| 49 | _LIBCPP_END_NAMESPACE_STD |
| 50 | |
| 51 | #endif // _LIBCPP___CXX03___FUNCTIONAL_MEM_FN_H |
| 52 |
Warning: This file is not a C or C++ file. It does not have highlighting.