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:
binder2nd(const _Operation & __x,const typename _Operation::second_argument_type __y)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
operator()35 operator()(typename _Operation::first_argument_type& __x) const {
36 return op(__x, value);
37 }
38 _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type
operator()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>
bind2nd(const _Operation & __op,const _Tp & __x)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