1fe6060f1SDimitry Andric // -*- C++ -*- 2fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 3fe6060f1SDimitry Andric // 4fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 6fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7fe6060f1SDimitry Andric // 8fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 9fe6060f1SDimitry Andric 10fe6060f1SDimitry Andric #ifndef _LIBCPP___FUNCTIONAL_BINDER1ST_H 11fe6060f1SDimitry Andric #define _LIBCPP___FUNCTIONAL_BINDER1ST_H 12fe6060f1SDimitry Andric 13fe6060f1SDimitry Andric #include <__config> 14fe6060f1SDimitry Andric #include <__functional/unary_function.h> 15fe6060f1SDimitry Andric 16fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17fe6060f1SDimitry Andric # pragma GCC system_header 18fe6060f1SDimitry Andric #endif 19fe6060f1SDimitry Andric 20fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21fe6060f1SDimitry Andric 22fe6060f1SDimitry Andric #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) 23fe6060f1SDimitry Andric 2406c3fb27SDimitry Andric template <class _Operation> 25fe6060f1SDimitry Andric class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder1st 26*cb14a3feSDimitry Andric : public __unary_function<typename _Operation::second_argument_type, typename _Operation::result_type> { 27fe6060f1SDimitry Andric protected: 2806c3fb27SDimitry Andric _Operation op; 2906c3fb27SDimitry Andric typename _Operation::first_argument_type value; 30*cb14a3feSDimitry Andric 31fe6060f1SDimitry Andric public: 32*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI binder1st(const _Operation& __x, const typename _Operation::first_argument_type __y) 33fe6060f1SDimitry Andric : op(__x), value(__y) {} 34*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type 35*cb14a3feSDimitry Andric operator()(typename _Operation::second_argument_type& __x) const { 36*cb14a3feSDimitry Andric return op(value, __x); 37*cb14a3feSDimitry Andric } 38*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type 39*cb14a3feSDimitry Andric operator()(const typename _Operation::second_argument_type& __x) const { 40*cb14a3feSDimitry Andric return op(value, __x); 41*cb14a3feSDimitry Andric } 42fe6060f1SDimitry Andric }; 43fe6060f1SDimitry Andric 4406c3fb27SDimitry Andric template <class _Operation, class _Tp> 45*cb14a3feSDimitry Andric _LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI binder1st<_Operation> 46*cb14a3feSDimitry Andric bind1st(const _Operation& __op, const _Tp& __x) { 47*cb14a3feSDimitry Andric return binder1st<_Operation>(__op, __x); 48*cb14a3feSDimitry Andric } 49fe6060f1SDimitry Andric 50fe6060f1SDimitry Andric #endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) 51fe6060f1SDimitry Andric 52fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 53fe6060f1SDimitry Andric 54fe6060f1SDimitry Andric #endif // _LIBCPP___FUNCTIONAL_BINDER1ST_H 55