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_DEFAULT_SEARCHER_H 11#define _LIBCPP___FUNCTIONAL_DEFAULT_SEARCHER_H 12 13#include <__algorithm/search.h> 14#include <__config> 15#include <__functional/identity.h> 16#include <__functional/operations.h> 17#include <__iterator/iterator_traits.h> 18#include <__utility/pair.h> 19 20#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 21# pragma GCC system_header 22#endif 23 24_LIBCPP_BEGIN_NAMESPACE_STD 25 26#if _LIBCPP_STD_VER > 14 27 28// default searcher 29template<class _ForwardIterator, class _BinaryPredicate = equal_to<>> 30class _LIBCPP_TEMPLATE_VIS default_searcher { 31public: 32 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 33 default_searcher(_ForwardIterator __f, _ForwardIterator __l, 34 _BinaryPredicate __p = _BinaryPredicate()) 35 : __first_(__f), __last_(__l), __pred_(__p) {} 36 37 template <typename _ForwardIterator2> 38 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 39 pair<_ForwardIterator2, _ForwardIterator2> 40 operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const 41 { 42 auto __proj = __identity(); 43 return std::__search_impl(__f, __l, __first_, __last_, __pred_, __proj, __proj); 44 } 45 46private: 47 _ForwardIterator __first_; 48 _ForwardIterator __last_; 49 _BinaryPredicate __pred_; 50}; 51_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(default_searcher); 52 53#endif // _LIBCPP_STD_VER > 14 54 55_LIBCPP_END_NAMESPACE_STD 56 57#endif // _LIBCPP___FUNCTIONAL_DEFAULT_SEARCHER_H 58