| // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| |
| #include <algorithm> |
| #include <testsuite_hooks.h> |
| #include <testsuite_iterators.h> |
| |
| using __gnu_test::test_container; |
| using __gnu_test::test_range; |
| using __gnu_test::input_iterator_wrapper; |
| using __gnu_test::output_iterator_wrapper; |
| using __gnu_test::forward_iterator_wrapper; |
| |
| namespace ranges = std::ranges; |
| |
| struct X |
| { |
| int i; |
| }; |
| |
| void |
| test01() |
| { |
| int x[5] = { 1, 2, 3, 4, 5 }; |
| const int y[4] = { 1, 2, 4, 5 }; |
| auto res = ranges::remove_if(x, [] (int a) { return a == 3; }); |
| VERIFY( res.begin() == x+4 && res.end() == x+5 ); |
| VERIFY( ranges::equal(x, x+4, y, y+4) ); |
| } |
| |
| void |
| test02() |
| { |
| int x[1]; |
| test_container<int, forward_iterator_wrapper> c(x, x); |
| auto res = ranges::remove_if(c, [] (int a) { return a == 1; }); |
| VERIFY( res.begin().ptr == x && res.end().ptr == x ); |
| } |
| |
| void |
| test03() |
| { |
| int x[1] = {1}; |
| test_container<int, forward_iterator_wrapper> c(x); |
| auto res = ranges::remove_if(c, [] (int a) { return a == 0; }); |
| VERIFY( res.begin().ptr == x+1 && res.end().ptr == x+1 ); |
| res = ranges::remove_if(c, [] (int a) { return a == 1; }); |
| VERIFY( res.begin().ptr == x && res.end().ptr == x+1 ); |
| } |
| |
| void |
| test04() |
| { |
| X x[8] = { {0}, {1}, {0}, {1}, {0}, {0}, {1}, {1} }; |
| const int y[4] = { 0, 0, 0, 0 }; |
| test_range<X, forward_iterator_wrapper> c(x); |
| auto res = ranges::remove_if(c, [] (int a) { return a == 1; }, &X::i); |
| VERIFY( res.begin().ptr == x+4 && res.end().ptr == x+8 ); |
| VERIFY( ranges::equal(x, x+4, y, y+4, {}, &X::i) ); |
| } |
| |
| constexpr bool |
| test05() |
| { |
| int x[6] = { 3, 2, 3, 3, 5, 3 }; |
| const int y[2] = { 2, 5 }; |
| auto res = ranges::remove_if(x, [] (int a) { return a == 3; }); |
| return ranges::equal(x, res.begin(), y, y+2); |
| } |
| |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| test04(); |
| static_assert(test05()); |
| } |