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83ffe9cd | 1 | // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
bc464641 PP |
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 <algorithm> | |
22 | #include <testsuite_hooks.h> | |
23 | #include <testsuite_iterators.h> | |
24 | ||
25 | using __gnu_test::test_container; | |
26 | using __gnu_test::test_range; | |
27 | using __gnu_test::forward_iterator_wrapper; | |
28 | using __gnu_test::random_access_iterator_wrapper; | |
29 | ||
30 | namespace ranges = std::ranges; | |
31 | ||
32 | struct X | |
33 | { | |
34 | int i; | |
35 | X () : i(0) { } | |
36 | X (int a) : i(a) { } | |
37 | ||
38 | friend bool | |
39 | operator==(const X& lhs, const X& rhs) | |
40 | { | |
41 | return lhs.i == rhs.i; | |
42 | } | |
43 | }; | |
44 | ||
45 | static_assert(!std::is_trivial_v<X>); | |
46 | ||
47 | template<template<typename, template<typename> typename> typename container, | |
48 | template<typename> typename wrapper, | |
49 | typename T = int> | |
50 | void | |
51 | test01() | |
52 | { | |
53 | for (int a = 0; a <= 7; a++) | |
54 | { | |
55 | T x[] = {1, 2, 3, 4, 5, 6, 7}; | |
56 | T w[7]; | |
57 | container<T, wrapper> rx(x), rw(w); | |
58 | auto i = ranges::begin(rx); | |
59 | std::advance(i, a); | |
60 | auto [in,out] = ranges::rotate_copy(rx, i, ranges::begin(rw)); | |
61 | VERIFY( in == ranges::end(rx) ); | |
62 | VERIFY( out == ranges::end(rw) ); | |
63 | for (int k = 0; k < 7; k++) | |
64 | VERIFY( w[k] == (k+a)%7 + 1 ); | |
65 | } | |
66 | } | |
67 | ||
68 | constexpr bool | |
69 | test02() | |
70 | { | |
71 | const int x[] = {1, 2, 3, 4}; | |
72 | int w[3]; | |
73 | const int y[] = { 2, 3, 1}; | |
74 | auto [in,out] = ranges::rotate_copy(x, x+1, x+3, w); | |
75 | return (in == x+3 | |
76 | && out == w+3 | |
77 | && ranges::equal(w, y)); | |
78 | } | |
79 | ||
80 | int | |
81 | main() | |
82 | { | |
83 | test01<test_container, forward_iterator_wrapper>(); | |
84 | test01<test_range, forward_iterator_wrapper>(); | |
85 | ||
86 | test01<test_container, random_access_iterator_wrapper>(); | |
87 | test01<test_range, random_access_iterator_wrapper>(); | |
88 | ||
89 | test01<test_container, random_access_iterator_wrapper, X>(); | |
90 | test01<test_range, random_access_iterator_wrapper, X>(); | |
91 | ||
92 | static_assert(test02()); | |
93 | } |