1fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 2fe6060f1SDimitry Andric // 3fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6fe6060f1SDimitry Andric // 7fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 8fe6060f1SDimitry Andric 9fe6060f1SDimitry Andric #ifndef _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H 10fe6060f1SDimitry Andric #define _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H 11fe6060f1SDimitry Andric 12fe6060f1SDimitry Andric #include <__config> 13fe6060f1SDimitry Andric 14fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15fe6060f1SDimitry Andric # pragma GCC system_header 16fe6060f1SDimitry Andric #endif 17fe6060f1SDimitry Andric 18fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 19fe6060f1SDimitry Andric 2081ad6265SDimitry Andric #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) 2181ad6265SDimitry Andric 22fe6060f1SDimitry Andric template <class _Arg, class _Result> 23*cb14a3feSDimitry Andric struct _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 unary_function { 24fe6060f1SDimitry Andric typedef _Arg argument_type; 25fe6060f1SDimitry Andric typedef _Result result_type; 26fe6060f1SDimitry Andric }; 27fe6060f1SDimitry Andric 2881ad6265SDimitry Andric #endif // _LIBCPP_STD_VER <= 14 2981ad6265SDimitry Andric 30*cb14a3feSDimitry Andric template <class _Arg, class _Result> 31*cb14a3feSDimitry Andric struct __unary_function_keep_layout_base { 3281ad6265SDimitry Andric #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) 3381ad6265SDimitry Andric using argument_type _LIBCPP_DEPRECATED_IN_CXX17 = _Arg; 3481ad6265SDimitry Andric using result_type _LIBCPP_DEPRECATED_IN_CXX17 = _Result; 3581ad6265SDimitry Andric #endif 3681ad6265SDimitry Andric }; 3781ad6265SDimitry Andric 3881ad6265SDimitry Andric #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) 3981ad6265SDimitry Andric _LIBCPP_DIAGNOSTIC_PUSH 4081ad6265SDimitry Andric _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations") 4181ad6265SDimitry Andric template <class _Arg, class _Result> 4281ad6265SDimitry Andric using __unary_function = unary_function<_Arg, _Result>; 4381ad6265SDimitry Andric _LIBCPP_DIAGNOSTIC_POP 4481ad6265SDimitry Andric #else 4581ad6265SDimitry Andric template <class _Arg, class _Result> 4681ad6265SDimitry Andric using __unary_function = __unary_function_keep_layout_base<_Arg, _Result>; 4781ad6265SDimitry Andric #endif 4881ad6265SDimitry Andric 49fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 50fe6060f1SDimitry Andric 51fe6060f1SDimitry Andric #endif // _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H 52