libcxx/include/__functional/binder2nd.h

   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,
  27                             typename __Operation::result_type>
  28 {
  29 protected:
  30     __Operation                                op;
  31     typename __Operation::second_argument_type value;
  32 public:
  33     _LIBCPP_INLINE_VISIBILITY
  34     binder2nd(const __Operation& __x, const typename __Operation::second_argument_type __y)
  35         : op(__x), value(__y) {}
  36     _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator()
  37         (      typename __Operation::first_argument_type& __x) const
  38             {return op(__x, value);}
  39     _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator()
  40         (const typename __Operation::first_argument_type& __x) const
  41             {return op(__x, value);}
  42 };
  43
  44 template <class __Operation, class _Tp>
  45 _LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_INLINE_VISIBILITY
  46 binder2nd<__Operation>
  47 bind2nd(const __Operation& __op, const _Tp& __x)
  48     {return binder2nd<__Operation>(__op, __x);}
  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