1fe6060f1SDimitry Andric // -*- C++ -*- 2fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 3fe6060f1SDimitry Andric // 4fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 6fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7fe6060f1SDimitry Andric // 8fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 9fe6060f1SDimitry Andric 10fe6060f1SDimitry Andric #ifndef _LIBCPP___ALGORITHM_ADJACENT_FIND_H 11fe6060f1SDimitry Andric #define _LIBCPP___ALGORITHM_ADJACENT_FIND_H 12fe6060f1SDimitry Andric 13fe6060f1SDimitry Andric #include <__algorithm/comp.h> 1461cfbce3SDimitry Andric #include <__algorithm/iterator_operations.h> 1504eeddc0SDimitry Andric #include <__config> 16fe6060f1SDimitry Andric #include <__iterator/iterator_traits.h> 1761cfbce3SDimitry Andric #include <__utility/move.h> 18fe6060f1SDimitry Andric 19fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20fe6060f1SDimitry Andric # pragma GCC system_header 21fe6060f1SDimitry Andric #endif 22fe6060f1SDimitry Andric 2306c3fb27SDimitry Andric _LIBCPP_PUSH_MACROS 2406c3fb27SDimitry Andric #include <__undef_macros> 2506c3fb27SDimitry Andric 26fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 27fe6060f1SDimitry Andric 2861cfbce3SDimitry Andric template <class _Iter, class _Sent, class _BinaryPredicate> 29*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Iter 3061cfbce3SDimitry Andric __adjacent_find(_Iter __first, _Sent __last, _BinaryPredicate&& __pred) { 3161cfbce3SDimitry Andric if (__first == __last) 3261cfbce3SDimitry Andric return __first; 3361cfbce3SDimitry Andric _Iter __i = __first; 34fe6060f1SDimitry Andric while (++__i != __last) { 35fe6060f1SDimitry Andric if (__pred(*__first, *__i)) 36fe6060f1SDimitry Andric return __first; 37fe6060f1SDimitry Andric __first = __i; 38fe6060f1SDimitry Andric } 3961cfbce3SDimitry Andric return __i; 40fe6060f1SDimitry Andric } 4161cfbce3SDimitry Andric 4261cfbce3SDimitry Andric template <class _ForwardIterator, class _BinaryPredicate> 43*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 4461cfbce3SDimitry Andric adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) { 4561cfbce3SDimitry Andric return std::__adjacent_find(std::move(__first), std::move(__last), __pred); 46fe6060f1SDimitry Andric } 47fe6060f1SDimitry Andric 48fe6060f1SDimitry Andric template <class _ForwardIterator> 49*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 50fe6060f1SDimitry Andric adjacent_find(_ForwardIterator __first, _ForwardIterator __last) { 51bdd1243dSDimitry Andric return std::adjacent_find(std::move(__first), std::move(__last), __equal_to()); 52fe6060f1SDimitry Andric } 53fe6060f1SDimitry Andric 54fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 55fe6060f1SDimitry Andric 5606c3fb27SDimitry Andric _LIBCPP_POP_MACROS 5706c3fb27SDimitry Andric 58fe6060f1SDimitry Andric #endif // _LIBCPP___ALGORITHM_ADJACENT_FIND_H 59