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___FUNCTIONAL_BINDER2ND_H 11 #define _LIBCPP___FUNCTIONAL_BINDER2ND_H 12 13 #include <__config> 14 #include <__functional/unary_function.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) 23 24 template <class _Operation> 25 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder2nd 26 : public __unary_function<typename _Operation::first_argument_type, typename _Operation::result_type> { 27 protected: 28 _Operation op; 29 typename _Operation::second_argument_type value; 30 31 public: 32 _LIBCPP_HIDE_FROM_ABI binder2nd(const _Operation& __x, const typename _Operation::second_argument_type __y) 33 : op(__x), value(__y) {} 34 _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type 35 operator()(typename _Operation::first_argument_type& __x) const { 36 return op(__x, value); 37 } 38 _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type 39 operator()(const typename _Operation::first_argument_type& __x) const { 40 return op(__x, value); 41 } 42 }; 43 44 template <class _Operation, class _Tp> 45 _LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI binder2nd<_Operation> 46 bind2nd(const _Operation& __op, const _Tp& __x) { 47 return binder2nd<_Operation>(__op, __x); 48 } 49 50 #endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS) 51 52 _LIBCPP_END_NAMESPACE_STD 53 54 #endif // _LIBCPP___FUNCTIONAL_BINDER2ND_H 55