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99dee823 | 1 | // Copyright (C) 2019-2021 Free Software Foundation, Inc. |
37f33df7 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 | ||
18 | // { dg-options "-std=gnu++2a" } | |
19 | // { dg-do run { target c++2a } } | |
20 | ||
21 | #include <ranges> | |
22 | #include <testsuite_hooks.h> | |
23 | ||
24 | void | |
25 | test01() | |
26 | { | |
27 | int vals[5] = { }; | |
28 | int* out = vals; | |
29 | for (int i : std::ranges::iota_view{1, 4}) | |
30 | *out++ = i; | |
31 | VERIFY(out == vals + 3); | |
32 | VERIFY(vals[0] == 1); | |
33 | VERIFY(vals[1] == 2); | |
34 | VERIFY(vals[2] == 3); | |
35 | VERIFY(vals[3] == 0); | |
36 | } | |
37 | ||
38 | void | |
39 | test02() | |
40 | { | |
41 | auto v = std::ranges::views::iota(4); | |
42 | auto it = v.begin(); | |
43 | VERIFY( *it == 4 ); | |
44 | ++it; | |
45 | VERIFY( *it == 5 ); | |
46 | it++; | |
47 | VERIFY( *it == 6 ); | |
48 | } | |
49 | ||
50 | void | |
51 | test03() | |
52 | { | |
53 | auto v = std::ranges::views::iota(10, 15); | |
54 | auto it = v.begin(); | |
55 | VERIFY( *it == 10 ); | |
56 | it += 2; | |
57 | VERIFY( *it == 12 ); | |
58 | it += 2; | |
59 | VERIFY( *it == 14 ); | |
60 | ++it; | |
61 | VERIFY( it == v.end() ); | |
62 | } | |
63 | ||
5586e506 PP |
64 | void |
65 | test04() | |
66 | { | |
67 | int x[] = {1,2,3}; | |
68 | auto v = std::ranges::views::iota(std::counted_iterator(x, 3), | |
69 | std::default_sentinel); | |
70 | auto it = v.begin(); | |
71 | VERIFY( (*it).base() == x ); | |
72 | ++it; | |
73 | VERIFY( (*it).base() == x+1 ); | |
74 | ++it; | |
75 | VERIFY( (*it).base() == x+2 ); | |
76 | ++it; | |
77 | VERIFY( it == v.end() ); | |
78 | } | |
79 | ||
62344335 PP |
80 | // Verify we optimize away the 'bound' data member of an unbounded iota_view. |
81 | static_assert(sizeof(std::ranges::iota_view<char>) == 1); | |
82 | ||
37f33df7 JW |
83 | int |
84 | main() | |
85 | { | |
86 | test01(); | |
87 | test02(); | |
88 | test03(); | |
5586e506 | 89 | test04(); |
37f33df7 | 90 | } |