| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // UNSUPPORTED: libcpp-no-concepts |
| // UNSUPPORTED: gcc-10 |
| |
| // constexpr const I& base() const &; |
| // constexpr I base() &&; |
| |
| #include <iterator> |
| |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| |
| struct InputOrOutputArchetype { |
| using difference_type = int; |
| |
| int *ptr; |
| |
| int operator*() { return *ptr; } |
| void operator++(int) { ++ptr; } |
| InputOrOutputArchetype& operator++() { ++ptr; return *this; } |
| }; |
| |
| constexpr bool test() { |
| int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8}; |
| |
| { |
| std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8); |
| assert(iter.base().base() == buffer); |
| assert(std::move(iter).base().base() == buffer); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const cpp20_input_iterator<int*>&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), cpp20_input_iterator<int*>); |
| } |
| |
| { |
| std::counted_iterator iter(forward_iterator<int*>{buffer}, 8); |
| assert(iter.base() == forward_iterator<int*>{buffer}); |
| assert(std::move(iter).base() == forward_iterator<int*>{buffer}); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const forward_iterator<int*>&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), forward_iterator<int*>); |
| } |
| |
| { |
| std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8); |
| assert(iter.base() == contiguous_iterator<int*>{buffer}); |
| assert(std::move(iter).base() == contiguous_iterator<int*>{buffer}); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const contiguous_iterator<int*>&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), contiguous_iterator<int*>); |
| } |
| |
| { |
| std::counted_iterator iter(InputOrOutputArchetype{buffer}, 6); |
| assert(iter.base().ptr == buffer); |
| assert(std::move(iter).base().ptr == buffer); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const InputOrOutputArchetype&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), InputOrOutputArchetype); |
| } |
| |
| { |
| const std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8); |
| assert(iter.base().base() == buffer); |
| assert(std::move(iter).base().base() == buffer); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const cpp20_input_iterator<int*>&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const cpp20_input_iterator<int*>&); |
| } |
| |
| { |
| const std::counted_iterator iter(forward_iterator<int*>{buffer}, 7); |
| assert(iter.base() == forward_iterator<int*>{buffer}); |
| assert(std::move(iter).base() == forward_iterator<int*>{buffer}); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const forward_iterator<int*>&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const forward_iterator<int*>&); |
| } |
| |
| { |
| const std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 6); |
| assert(iter.base() == contiguous_iterator<int*>{buffer}); |
| assert(std::move(iter).base() == contiguous_iterator<int*>{buffer}); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const contiguous_iterator<int*>&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const contiguous_iterator<int*>&); |
| } |
| |
| { |
| const std::counted_iterator iter(InputOrOutputArchetype{buffer}, 6); |
| assert(iter.base().ptr == buffer); |
| assert(std::move(iter).base().ptr == buffer); |
| |
| ASSERT_SAME_TYPE(decltype(iter.base()), const InputOrOutputArchetype&); |
| ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const InputOrOutputArchetype&); |
| } |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| test(); |
| static_assert(test()); |
| |
| return 0; |
| } |