| // -*- 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_INLINE_VISIBILITY binder1st(const __Operation& __x, |
| const typename __Operation::first_argument_type __y) |
| : op(__x), value(__y) {} |
| _LIBCPP_INLINE_VISIBILITY typename __Operation::result_type operator() |
| (typename __Operation::second_argument_type& __x) const |
| {return op(value, __x);} |
| _LIBCPP_INLINE_VISIBILITY 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_INLINE_VISIBILITY |
| 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 |
