| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| |
| // template<class I2, class S2> |
| // requires convertible_to<const I2&, I> && convertible_to<const S2&, S> && |
| // assignable_from<I&, const I2&> && assignable_from<S&, const S2&> |
| // common_iterator& operator=(const common_iterator<I2, S2>& x); |
| |
| #include <iterator> |
| #include <ranges> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "types.h" |
| |
| void test() { |
| int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8}; |
| |
| { |
| auto iter1 = cpp17_input_iterator<int*>(buffer); |
| auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); |
| auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(cpp17_input_iterator<int*>(buffer + 1)); |
| |
| assert(*commonIter1 == 1); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 != commonIter2); |
| |
| commonIter1 = commonIter2; |
| |
| assert(*commonIter1 == 2); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 == commonIter2); |
| } |
| { |
| auto iter1 = forward_iterator<int*>(buffer); |
| auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); |
| auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(forward_iterator<int*>(buffer + 1)); |
| |
| assert(*commonIter1 == 1); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 != commonIter2); |
| |
| commonIter1 = commonIter2; |
| |
| assert(*commonIter1 == 2); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 == commonIter2); |
| } |
| { |
| auto iter1 = random_access_iterator<int*>(buffer); |
| auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); |
| auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8}); |
| |
| auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1 + 1); |
| auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 7}); |
| |
| assert(*commonIter1 == 1); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 != commonIter2); |
| |
| commonIter1 = commonIter2; |
| |
| assert(*commonIter1 == 2); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 == commonIter2); |
| |
| assert(std::next(commonIter1, 6) != commonSent1); |
| assert(std::next(commonIter1, 6) == commonSent2); |
| |
| commonSent1 = commonSent2; |
| |
| assert(std::next(commonIter1, 6) == commonSent1); |
| assert(std::next(commonIter1, 6) == commonSent2); |
| } |
| { |
| auto iter1 = assignable_iterator<int*>(buffer); |
| auto iter2 = forward_iterator<int*>(buffer + 1); |
| auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); |
| auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8}); |
| |
| auto commonIter2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(iter2); |
| auto commonSent2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(sentinel_type<int*>{buffer + 7}); |
| |
| assert(*commonIter1 == 1); |
| assert(*commonIter2 == 2); |
| |
| commonIter1 = commonIter2; |
| |
| assert(*commonIter1 == 2); |
| assert(*commonIter2 == 2); |
| assert(commonIter1 == commonIter2); |
| |
| assert(std::next(commonIter1, 6) != commonSent1); |
| assert(std::next(commonIter1, 6) == commonSent2); |
| |
| commonSent1 = commonSent2; |
| |
| assert(std::next(commonIter1, 6) == commonSent1); |
| assert(std::next(commonIter1, 6) == commonSent2); |
| |
| commonIter1 = commonSent1; |
| |
| assert(commonIter1 == commonSent2); |
| |
| commonIter1 = commonSent2; |
| |
| assert(commonIter1 == commonSent2); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| auto iter1 = maybe_valueless_iterator<int*>(buffer); |
| auto iter2 = forward_iterator<int*>(buffer); |
| auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); |
| auto commonSent2 = std::common_iterator<decltype(iter1), |
| sentinel_throws_on_convert<int*>>(sentinel_throws_on_convert<int*>{buffer + 8}); |
| auto commonIter2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(iter2); |
| |
| try { |
| commonIter1 = commonSent2; |
| assert(false); |
| } catch (int x) { |
| assert(x == 42); |
| commonIter1 = commonIter2; |
| } |
| |
| assert(*commonIter1 == 1); |
| } |
| #endif // TEST_HAS_NO_EXCEPTIONS |
| } |
| |
| int main(int, char**) { |
| test(); |
| |
| return 0; |
| } |