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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___ALGORITHM_RANGES_SET_UNION_H
#define _LIBCPP___ALGORITHM_RANGES_SET_UNION_H
#include <__algorithm/in_in_out_result.h>
#include <__algorithm/iterator_operations.h>
#include <__algorithm/make_projected.h>
#include <__algorithm/set_union.h>
#include <__config>
#include <__functional/identity.h>
#include <__functional/invoke.h>
#include <__functional/ranges_operations.h>
#include <__iterator/concepts.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/mergeable.h>
#include <__iterator/projected.h>
#include <__ranges/access.h>
#include <__ranges/concepts.h>
#include <__ranges/dangling.h>
#include <__utility/forward.h>
#include <__utility/move.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if _LIBCPP_STD_VER >= 20
_LIBCPP_BEGIN_NAMESPACE_STD
namespace ranges {
template <class _InIter1, class _InIter2, class _OutIter>
using set_union_result = in_in_out_result<_InIter1, _InIter2, _OutIter>;
namespace __set_union {
struct __fn {
template <input_iterator _InIter1,
sentinel_for<_InIter1> _Sent1,
input_iterator _InIter2,
sentinel_for<_InIter2> _Sent2,
weakly_incrementable _OutIter,
class _Comp = ranges::less,
class _Proj1 = identity,
class _Proj2 = identity>
requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2>
_LIBCPP_HIDE_FROM_ABI constexpr set_union_result<_InIter1, _InIter2, _OutIter> operator()(
_InIter1 __first1,
_Sent1 __last1,
_InIter2 __first2,
_Sent2 __last2,
_OutIter __result,
_Comp __comp = {},
_Proj1 __proj1 = {},
_Proj2 __proj2 = {}) const {
auto __ret = std::__set_union<_RangeAlgPolicy>(
std::move(__first1),
std::move(__last1),
std::move(__first2),
std::move(__last2),
std::move(__result),
ranges::__make_projected_comp(__comp, __proj1, __proj2));
return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)};
}
template <input_range _Range1,
input_range _Range2,
weakly_incrementable _OutIter,
class _Comp = ranges::less,
class _Proj1 = identity,
class _Proj2 = identity>
requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2>
_LIBCPP_HIDE_FROM_ABI constexpr set_union_result<borrowed_iterator_t<_Range1>, borrowed_iterator_t<_Range2>, _OutIter>
operator()(_Range1&& __range1,
_Range2&& __range2,
_OutIter __result,
_Comp __comp = {},
_Proj1 __proj1 = {},
_Proj2 __proj2 = {}) const {
auto __ret = std::__set_union<_RangeAlgPolicy>(
ranges::begin(__range1),
ranges::end(__range1),
ranges::begin(__range2),
ranges::end(__range2),
std::move(__result),
ranges::__make_projected_comp(__comp, __proj1, __proj2));
return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)};
}
};
} // namespace __set_union
inline namespace __cpo {
inline constexpr auto set_union = __set_union::__fn{};
} // namespace __cpo
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 20
#endif // _LIBCPP___ALGORITHM_RANGES_SET_UNION_H
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