| //===----------------------------------------------------------------------===// |
| // |
| // 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___ALGORIHTM_ITERATOR_OPERATIONS_H |
| #define _LIBCPP___ALGORIHTM_ITERATOR_OPERATIONS_H |
| |
| #include <__config> |
| #include <__iterator/advance.h> |
| #include <__iterator/distance.h> |
| #include <__iterator/iterator_traits.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) |
| struct _RangesIterOps { |
| static constexpr auto advance = ranges::advance; |
| static constexpr auto distance = ranges::distance; |
| }; |
| #endif |
| |
| struct _StdIterOps { |
| |
| template <class _Iterator, class _Distance> |
| _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_AFTER_CXX11 void advance(_Iterator& __iter, _Distance __count) { |
| return std::advance(__iter, __count); |
| } |
| |
| template <class _Iterator> |
| _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_AFTER_CXX11 |
| typename iterator_traits<_Iterator>::difference_type distance(_Iterator __first, _Iterator __last) { |
| return std::distance(__first, __last); |
| } |
| |
| }; |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___ALGORIHTM_ITERATOR_OPERATIONS_H |
