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// -*- 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_BINDER1ST_H
#define _LIBCPP___FUNCTIONAL_BINDER1ST_H
#include <__config>
#include <__functional/unary_function.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
template <class _Operation>
class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 binder1st
: public __unary_function<typename _Operation::second_argument_type, typename _Operation::result_type> {
protected:
_Operation op;
typename _Operation::first_argument_type value;
public:
_LIBCPP_HIDE_FROM_ABI binder1st(const _Operation& __x, const typename _Operation::first_argument_type __y)
: op(__x), value(__y) {}
_LIBCPP_HIDE_FROM_ABI typename _Operation::result_type
operator()(typename _Operation::second_argument_type& __x) const {
return op(value, __x);
}
_LIBCPP_HIDE_FROM_ABI typename _Operation::result_type
operator()(const typename _Operation::second_argument_type& __x) const {
return op(value, __x);
}
};
template <class _Operation, class _Tp>
_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI binder1st<_Operation>
bind1st(const _Operation& __op, const _Tp& __x) {
return binder1st<_Operation>(__op, __x);
}
#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___FUNCTIONAL_BINDER1ST_H
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