| // -*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___FUNCTIONAL_MEM_FN_H |
| #define _LIBCPP___FUNCTIONAL_MEM_FN_H |
| |
| #include <__config> |
| #include <__functional/weak_result_type.h> |
| #include <__functional/binary_function.h> |
| #include <__functional/invoke.h> |
| #include <utility> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| #pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| template <class _Tp> |
| class __mem_fn |
| #if _LIBCPP_STD_VER <= 17 || !defined(_LIBCPP_ABI_NO_BINDER_BASES) |
| : public __weak_result_type<_Tp> |
| #endif |
| { |
| public: |
| // types |
| typedef _Tp type; |
| private: |
| type __f_; |
| |
| public: |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 |
| __mem_fn(type __f) _NOEXCEPT : __f_(__f) {} |
| |
| #ifndef _LIBCPP_CXX03_LANG |
| // invoke |
| template <class... _ArgTypes> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 |
| typename __invoke_return<type, _ArgTypes...>::type |
| operator() (_ArgTypes&&... __args) const { |
| return _VSTD::__invoke(__f_, _VSTD::forward<_ArgTypes>(__args)...); |
| } |
| #else |
| |
| template <class _A0> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return0<type, _A0>::type |
| operator() (_A0& __a0) const { |
| return _VSTD::__invoke(__f_, __a0); |
| } |
| |
| template <class _A0> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return0<type, _A0 const>::type |
| operator() (_A0 const& __a0) const { |
| return _VSTD::__invoke(__f_, __a0); |
| } |
| |
| template <class _A0, class _A1> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return1<type, _A0, _A1>::type |
| operator() (_A0& __a0, _A1& __a1) const { |
| return _VSTD::__invoke(__f_, __a0, __a1); |
| } |
| |
| template <class _A0, class _A1> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return1<type, _A0 const, _A1>::type |
| operator() (_A0 const& __a0, _A1& __a1) const { |
| return _VSTD::__invoke(__f_, __a0, __a1); |
| } |
| |
| template <class _A0, class _A1> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return1<type, _A0, _A1 const>::type |
| operator() (_A0& __a0, _A1 const& __a1) const { |
| return _VSTD::__invoke(__f_, __a0, __a1); |
| } |
| |
| template <class _A0, class _A1> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return1<type, _A0 const, _A1 const>::type |
| operator() (_A0 const& __a0, _A1 const& __a1) const { |
| return _VSTD::__invoke(__f_, __a0, __a1); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0, _A1, _A2>::type |
| operator() (_A0& __a0, _A1& __a1, _A2& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0 const, _A1, _A2>::type |
| operator() (_A0 const& __a0, _A1& __a1, _A2& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0, _A1 const, _A2>::type |
| operator() (_A0& __a0, _A1 const& __a1, _A2& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0, _A1, _A2 const>::type |
| operator() (_A0& __a0, _A1& __a1, _A2 const& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0 const, _A1 const, _A2>::type |
| operator() (_A0 const& __a0, _A1 const& __a1, _A2& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0 const, _A1, _A2 const>::type |
| operator() (_A0 const& __a0, _A1& __a1, _A2 const& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0, _A1 const, _A2 const>::type |
| operator() (_A0& __a0, _A1 const& __a1, _A2 const& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| |
| template <class _A0, class _A1, class _A2> |
| _LIBCPP_INLINE_VISIBILITY |
| typename __invoke_return2<type, _A0 const, _A1 const, _A2 const>::type |
| operator() (_A0 const& __a0, _A1 const& __a1, _A2 const& __a2) const { |
| return _VSTD::__invoke(__f_, __a0, __a1, __a2); |
| } |
| #endif |
| }; |
| |
| template<class _Rp, class _Tp> |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 |
| __mem_fn<_Rp _Tp::*> |
| mem_fn(_Rp _Tp::* __pm) _NOEXCEPT |
| { |
| return __mem_fn<_Rp _Tp::*>(__pm); |
| } |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___FUNCTIONAL_MEM_FN_H |