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a945c346 | 1 | // Copyright (C) 2019-2024 Free Software Foundation, Inc. |
6d0dff49 JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
762baaf0 | 18 | // { dg-do compile { target c++20 } } |
6d0dff49 JW |
19 | // { dg-require-normal-namespace "" } |
20 | ||
21 | #include <iterator> | |
22 | #include "./synopsis_c++17.cc" | |
23 | ||
24 | namespace std | |
25 | { | |
26 | template<class> struct incrementable_traits; | |
27 | template<class> struct readable_traits; | |
28 | ||
29 | struct contiguous_iterator_tag; | |
30 | ||
31 | namespace ranges | |
32 | { | |
a49a045b JW |
33 | // These are function objects of unspecified type. |
34 | auto& _distance = distance; | |
35 | auto& _advance = advance; | |
36 | auto& _next = next; | |
37 | auto& _prev = prev; | |
6d0dff49 JW |
38 | } |
39 | ||
40 | template<semiregular S> class move_sentinel; | |
41 | ||
42 | template<input_or_output_iterator I, sentinel_for<I> S> | |
1b425f3a | 43 | requires (!same_as<I, S>) && copyable<I> |
6d0dff49 JW |
44 | class common_iterator; |
45 | ||
46 | template<class I, class S> | |
47 | struct incrementable_traits<common_iterator<I, S>>; | |
48 | ||
49 | template<input_iterator I, class S> | |
50 | struct iterator_traits<common_iterator<I, S>>; | |
51 | ||
52 | struct default_sentinel_t; | |
53 | ||
54 | template<input_or_output_iterator I> class counted_iterator; | |
55 | ||
56 | template<class I> | |
57 | struct incrementable_traits<counted_iterator<I>>; | |
58 | ||
59 | template<input_iterator I> | |
902b40c7 | 60 | requires same_as<__detail::__iter_traits<I>, iterator_traits<I>> |
6d0dff49 JW |
61 | struct iterator_traits<counted_iterator<I>>; |
62 | ||
63 | struct unreachable_sentinel_t; | |
64 | } | |
65 | ||
328b52d6 | 66 | struct I { }; |
d99828ee | 67 | template<> constexpr bool std::disable_sized_sentinel_for<I, I> = true; |
328b52d6 | 68 | |
6d0dff49 JW |
69 | namespace __gnu_test |
70 | { | |
71 | // customization points | |
72 | constexpr auto* iter_move = &std::ranges::iter_move; | |
73 | constexpr auto* iter_swap = &std::ranges::iter_swap; | |
74 | // sized sentinels | |
d99828ee JW |
75 | constexpr bool const* disable_sized_sentinel_for |
76 | = &std::disable_sized_sentinel_for<void, void>; | |
6d0dff49 JW |
77 | // default sentinels |
78 | constexpr std::default_sentinel_t const* default_sentinel | |
79 | = &std::default_sentinel; | |
80 | // unreachable sentinels | |
81 | constexpr std::unreachable_sentinel_t const* unreachable_sentinel | |
82 | = &std::unreachable_sentinel; | |
83 | } |