1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___ALGORITHM_RANGES_FILL_H
10#define _LIBCPP___ALGORITHM_RANGES_FILL_H
11
12#include <__algorithm/fill.h>
13#include <__algorithm/fill_n.h>
14#include <__config>
15#include <__iterator/concepts.h>
16#include <__ranges/access.h>
17#include <__ranges/concepts.h>
18#include <__ranges/dangling.h>
19#include <__utility/move.h>
20
21#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
22# pragma GCC system_header
23#endif
24
25_LIBCPP_PUSH_MACROS
26#include <__undef_macros>
27
28#if _LIBCPP_STD_VER >= 20
29
30_LIBCPP_BEGIN_NAMESPACE_STD
31
32namespace ranges {
33struct __fill {
34 template <class _Type, output_iterator<const _Type&> _Iter, sentinel_for<_Iter> _Sent>
35 _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(_Iter __first, _Sent __last, const _Type& __value) const {
36 if constexpr (sized_sentinel_for<_Sent, _Iter>) {
37 auto __n = __last - __first;
38 return std::__fill_n(std::move(__first), __n, __value);
39 } else {
40 return std::__fill(std::move(__first), std::move(__last), __value);
41 }
42 }
43
44 template <class _Type, output_range<const _Type&> _Range>
45 _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> operator()(_Range&& __range, const _Type& __value) const {
46 return (*this)(ranges::begin(__range), ranges::end(__range), __value);
47 }
48};
49
50inline namespace __cpo {
51inline constexpr auto fill = __fill{};
52} // namespace __cpo
53} // namespace ranges
54
55_LIBCPP_END_NAMESPACE_STD
56
57#endif // _LIBCPP_STD_VER >= 20
58
59_LIBCPP_POP_MACROS
60
61#endif // _LIBCPP___ALGORITHM_RANGES_FILL_H
62