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//===----------------------------------------------------------------------===//
//
// 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
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