1e78f53d1SNikolas Klauser // -*- C++ -*- 2e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 3e78f53d1SNikolas Klauser // 4e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 6e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7e78f53d1SNikolas Klauser // 8e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 9e78f53d1SNikolas Klauser 10*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___ALGORITHM_ADJACENT_FIND_H 11*ce777190SNikolas Klauser #define _LIBCPP___CXX03___ALGORITHM_ADJACENT_FIND_H 12e78f53d1SNikolas Klauser 1373fbae83SNikolas Klauser #include <__cxx03/__algorithm/comp.h> 1473fbae83SNikolas Klauser #include <__cxx03/__algorithm/iterator_operations.h> 1573fbae83SNikolas Klauser #include <__cxx03/__config> 1673fbae83SNikolas Klauser #include <__cxx03/__iterator/iterator_traits.h> 1773fbae83SNikolas Klauser #include <__cxx03/__utility/move.h> 18e78f53d1SNikolas Klauser 19e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20e78f53d1SNikolas Klauser # pragma GCC system_header 21e78f53d1SNikolas Klauser #endif 22e78f53d1SNikolas Klauser 23e78f53d1SNikolas Klauser _LIBCPP_PUSH_MACROS 2473fbae83SNikolas Klauser #include <__cxx03/__undef_macros> 25e78f53d1SNikolas Klauser 26e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 27e78f53d1SNikolas Klauser 28e78f53d1SNikolas Klauser template <class _Iter, class _Sent, class _BinaryPredicate> 29e78f53d1SNikolas Klauser _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Iter 30e78f53d1SNikolas Klauser __adjacent_find(_Iter __first, _Sent __last, _BinaryPredicate&& __pred) { 31e78f53d1SNikolas Klauser if (__first == __last) 32e78f53d1SNikolas Klauser return __first; 33e78f53d1SNikolas Klauser _Iter __i = __first; 34e78f53d1SNikolas Klauser while (++__i != __last) { 35e78f53d1SNikolas Klauser if (__pred(*__first, *__i)) 36e78f53d1SNikolas Klauser return __first; 37e78f53d1SNikolas Klauser __first = __i; 38e78f53d1SNikolas Klauser } 39e78f53d1SNikolas Klauser return __i; 40e78f53d1SNikolas Klauser } 41e78f53d1SNikolas Klauser 42e78f53d1SNikolas Klauser template <class _ForwardIterator, class _BinaryPredicate> 43e78f53d1SNikolas Klauser _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 44e78f53d1SNikolas Klauser adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) { 45e78f53d1SNikolas Klauser return std::__adjacent_find(std::move(__first), std::move(__last), __pred); 46e78f53d1SNikolas Klauser } 47e78f53d1SNikolas Klauser 48e78f53d1SNikolas Klauser template <class _ForwardIterator> 49e78f53d1SNikolas Klauser _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 50e78f53d1SNikolas Klauser adjacent_find(_ForwardIterator __first, _ForwardIterator __last) { 51e78f53d1SNikolas Klauser return std::adjacent_find(std::move(__first), std::move(__last), __equal_to()); 52e78f53d1SNikolas Klauser } 53e78f53d1SNikolas Klauser 54e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 55e78f53d1SNikolas Klauser 56e78f53d1SNikolas Klauser _LIBCPP_POP_MACROS 57e78f53d1SNikolas Klauser 58*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___ALGORITHM_ADJACENT_FIND_H 59