| // -*- 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___ALGORITHM_ADJACENT_FIND_H |
| #define _LIBCPP___ALGORITHM_ADJACENT_FIND_H |
| |
| #include <__algorithm/comp.h> |
| #include <__algorithm/iterator_operations.h> |
| #include <__config> |
| #include <__iterator/iterator_traits.h> |
| #include <__utility/move.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| template <class _Iter, class _Sent, class _BinaryPredicate> |
| _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Iter |
| __adjacent_find(_Iter __first, _Sent __last, _BinaryPredicate&& __pred) { |
| if (__first == __last) |
| return __first; |
| _Iter __i = __first; |
| while (++__i != __last) { |
| if (__pred(*__first, *__i)) |
| return __first; |
| __first = __i; |
| } |
| return __i; |
| } |
| |
| template <class _ForwardIterator, class _BinaryPredicate> |
| _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator |
| adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) { |
| return std::__adjacent_find(std::move(__first), std::move(__last), __pred); |
| } |
| |
| template <class _ForwardIterator> |
| _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator |
| adjacent_find(_ForwardIterator __first, _ForwardIterator __last) { |
| typedef typename iterator_traits<_ForwardIterator>::value_type __v; |
| return std::adjacent_find(std::move(__first), std::move(__last), __equal_to<__v>()); |
| } |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___ALGORITHM_ADJACENT_FIND_H |
