| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <algorithm> |
| |
| // template<ForwardIterator Iter, class T> |
| // requires OutputIterator<Iter, RvalueOf<Iter::reference>::type> |
| // && HasEqualTo<Iter::value_type, T> |
| // constexpr Iter // constexpr after C++17 |
| // remove(Iter first, Iter last, const T& value); |
| |
| #include <algorithm> |
| #include <cassert> |
| #include <memory> |
| |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| |
| #if TEST_STD_VER > 17 |
| TEST_CONSTEXPR bool test_constexpr() { |
| int ia[] = {1, 3, 5, 2, 5, 6}; |
| |
| auto it = std::remove(std::begin(ia), std::end(ia), 5); |
| |
| return (std::begin(ia) + std::size(ia) - 2) == it // we removed two elements |
| && std::none_of(std::begin(ia), it, [](int a) {return a == 5; }) |
| ; |
| } |
| #endif |
| |
| template <class Iter> |
| void |
| test() |
| { |
| int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2}; |
| const unsigned sa = sizeof(ia)/sizeof(ia[0]); |
| Iter r = std::remove(Iter(ia), Iter(ia+sa), 2); |
| assert(base(r) == ia + sa-3); |
| assert(ia[0] == 0); |
| assert(ia[1] == 1); |
| assert(ia[2] == 3); |
| assert(ia[3] == 4); |
| assert(ia[4] == 3); |
| assert(ia[5] == 4); |
| } |
| |
| #if TEST_STD_VER >= 11 |
| template <class Iter> |
| void |
| test1() |
| { |
| const unsigned sa = 9; |
| std::unique_ptr<int> ia[sa]; |
| ia[0].reset(new int(0)); |
| ia[1].reset(new int(1)); |
| ia[3].reset(new int(3)); |
| ia[4].reset(new int(4)); |
| ia[6].reset(new int(3)); |
| ia[7].reset(new int(4)); |
| Iter r = std::remove(Iter(ia), Iter(ia+sa), std::unique_ptr<int>()); |
| assert(base(r) == ia + sa-3); |
| assert(*ia[0] == 0); |
| assert(*ia[1] == 1); |
| assert(*ia[2] == 3); |
| assert(*ia[3] == 4); |
| assert(*ia[4] == 3); |
| assert(*ia[5] == 4); |
| } |
| #endif // TEST_STD_VER >= 11 |
| |
| int main() |
| { |
| test<forward_iterator<int*> >(); |
| test<bidirectional_iterator<int*> >(); |
| test<random_access_iterator<int*> >(); |
| test<int*>(); |
| |
| #if TEST_STD_VER >= 11 |
| test1<forward_iterator<std::unique_ptr<int>*> >(); |
| test1<bidirectional_iterator<std::unique_ptr<int>*> >(); |
| test1<random_access_iterator<std::unique_ptr<int>*> >(); |
| test1<std::unique_ptr<int>*>(); |
| #endif // TEST_STD_VER >= 11 |
| |
| #if TEST_STD_VER > 17 |
| static_assert(test_constexpr()); |
| #endif |
| } |