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7adcbafe | 1 | // Copyright (C) 2020-2022 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::forward_iterator_wrapper; | |
29 | ||
30 | namespace ranges = std::ranges; | |
31 | ||
32 | struct X { int i; }; | |
33 | ||
34 | void | |
35 | test01() | |
36 | { | |
37 | X x[] = { {2}, {2}, {6}, {8}, {10}, {11} }; | |
38 | int y[] = { 2, 7, 8, 8, 9 }; | |
39 | ||
40 | VERIFY( ranges::adjacent_find(x, x+6, {}, &X::i) == x+0 ); | |
41 | VERIFY( ranges::adjacent_find(x+1, x+6, {}, &X::i) == x+6 ); | |
42 | VERIFY( ranges::adjacent_find(y) == y+2 ); | |
43 | VERIFY( ranges::adjacent_find(y, y+4) == y+2 ); | |
44 | ||
45 | test_container<X, forward_iterator_wrapper> c(x); | |
46 | VERIFY( ranges::adjacent_find(c, {}, &X::i) == ranges::begin(c) ); | |
47 | ||
48 | test_range<int, forward_iterator_wrapper> r(y); | |
49 | auto res = ranges::adjacent_find(r); | |
50 | VERIFY( *res == 8 && *++res == 8 ); | |
51 | } | |
52 | ||
53 | void | |
54 | test02() | |
55 | { | |
56 | static constexpr X x[] = { {2}, {2}, {6}, {8}, {10}, {11} }; | |
57 | static constexpr X y[] = { {2}, {6}, {8}, {10}, {11} }; | |
58 | static_assert(ranges::adjacent_find(x, {}, &X::i) == x+0); | |
59 | static_assert(ranges::adjacent_find(y, {}, &X::i) == y+5); | |
60 | } | |
61 | ||
62 | int | |
63 | main() | |
64 | { | |
65 | test01(); | |
66 | test02(); | |
67 | } | |
68 |