1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___RANGES_ELEMENTS_OF_H
11#define _LIBCPP___RANGES_ELEMENTS_OF_H
12
13#include <__config>
14#include <__cstddef/byte.h>
15#include <__memory/allocator.h>
16#include <__ranges/concepts.h>
17#include <__utility/forward.h>
18
19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
20# pragma GCC system_header
21#endif
22
23_LIBCPP_PUSH_MACROS
24#include <__undef_macros>
25
26_LIBCPP_BEGIN_NAMESPACE_STD
27
28#if _LIBCPP_STD_VER >= 23
29
30namespace ranges {
31
32template <range _Range, class _Allocator = allocator<byte>>
33struct elements_of {
34 _LIBCPP_NO_UNIQUE_ADDRESS _Range range;
35 _LIBCPP_NO_UNIQUE_ADDRESS _Allocator allocator = _Allocator();
36};
37
38template <class _Range, class _Allocator = allocator<byte>>
39elements_of(_Range&&, _Allocator = _Allocator()) -> elements_of<_Range&&, _Allocator>;
40
41} // namespace ranges
42
43#endif // _LIBCPP_STD_VER >= 23
44
45_LIBCPP_END_NAMESPACE_STD
46
47_LIBCPP_POP_MACROS
48
49#endif // _LIBCPP___RANGES_ELEMENTS_OF_H
50