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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::input_iterator_wrapper; | |
28 | using __gnu_test::output_iterator_wrapper; | |
29 | using __gnu_test::forward_iterator_wrapper; | |
30 | ||
31 | namespace ranges = std::ranges; | |
32 | ||
33 | struct X | |
34 | { | |
35 | int i; | |
36 | }; | |
37 | ||
38 | void | |
39 | test01() | |
40 | { | |
41 | int x[5] = { 1, 2, 3, 4, 5 }; | |
42 | const int y[4] = { 1, 2, 4, 5 }; | |
43 | auto res = ranges::remove_if(x, [] (int a) { return a == 3; }); | |
44 | VERIFY( res.begin() == x+4 && res.end() == x+5 ); | |
45 | VERIFY( ranges::equal(x, x+4, y, y+4) ); | |
46 | } | |
47 | ||
48 | void | |
49 | test02() | |
50 | { | |
51 | int x[1]; | |
52 | test_container<int, forward_iterator_wrapper> c(x, x); | |
53 | auto res = ranges::remove_if(c, [] (int a) { return a == 1; }); | |
54 | VERIFY( res.begin().ptr == x && res.end().ptr == x ); | |
55 | } | |
56 | ||
57 | void | |
58 | test03() | |
59 | { | |
60 | int x[1] = {1}; | |
61 | test_container<int, forward_iterator_wrapper> c(x); | |
62 | auto res = ranges::remove_if(c, [] (int a) { return a == 0; }); | |
63 | VERIFY( res.begin().ptr == x+1 && res.end().ptr == x+1 ); | |
64 | res = ranges::remove_if(c, [] (int a) { return a == 1; }); | |
65 | VERIFY( res.begin().ptr == x && res.end().ptr == x+1 ); | |
66 | } | |
67 | ||
68 | void | |
69 | test04() | |
70 | { | |
71 | X x[8] = { {0}, {1}, {0}, {1}, {0}, {0}, {1}, {1} }; | |
72 | const int y[4] = { 0, 0, 0, 0 }; | |
73 | test_range<X, forward_iterator_wrapper> c(x); | |
74 | auto res = ranges::remove_if(c, [] (int a) { return a == 1; }, &X::i); | |
75 | VERIFY( res.begin().ptr == x+4 && res.end().ptr == x+8 ); | |
76 | VERIFY( ranges::equal(x, x+4, y, y+4, {}, &X::i) ); | |
77 | } | |
78 | ||
79 | constexpr bool | |
80 | test05() | |
81 | { | |
82 | int x[6] = { 3, 2, 3, 3, 5, 3 }; | |
83 | const int y[2] = { 2, 5 }; | |
84 | auto res = ranges::remove_if(x, [] (int a) { return a == 3; }); | |
85 | return ranges::equal(x, res.begin(), y, y+2); | |
86 | } | |
87 | ||
88 | ||
89 | int | |
90 | main() | |
91 | { | |
92 | test01(); | |
93 | test02(); | |
94 | test03(); | |
95 | test04(); | |
96 | static_assert(test05()); | |
97 | } |