85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// constexpr auto end();
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// constexpr auto end() const requires range<const V>;
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#include <ranges>
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#include <cassert>
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#include <concepts>
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#include <utility>
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#include "test_macros.h"
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#include "test_iterators.h"
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#include "types.h"
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constexpr bool test() {
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int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
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{
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SizedRandomAccessView view{buf, buf + 8};
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std::ranges::common_view<SizedRandomAccessView> common(view);
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std::same_as<RandomAccessIter> auto end = common.end(); // Note this should NOT be the sentinel type.
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assert(base(end) == buf + 8);
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}
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// const version
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{
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SizedRandomAccessView view{buf, buf + 8};
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std::ranges::common_view<SizedRandomAccessView> const common(view);
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std::same_as<RandomAccessIter> auto end = common.end(); // Note this should NOT be the sentinel type.
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assert(base(end) == buf + 8);
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}
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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{
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int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
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using CommonForwardIter = std::common_iterator<ForwardIter, sized_sentinel<ForwardIter>>;
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using CommonIntIter = std::common_iterator<int*, sentinel_wrapper<int*>>;
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{
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SizedForwardView view{buf, buf + 8};
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std::ranges::common_view<SizedForwardView> common(view);
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std::same_as<CommonForwardIter> auto end = common.end();
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assert(end == CommonForwardIter(std::ranges::end(view)));
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}
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{
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CopyableView view{buf, buf + 8};
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std::ranges::common_view<CopyableView> common(view);
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std::same_as<CommonIntIter> auto end = common.end();
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assert(end == CommonIntIter(std::ranges::end(view)));
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}
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// const versions
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{
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SizedForwardView view{buf, buf + 8};
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std::ranges::common_view<SizedForwardView> const common(view);
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std::same_as<CommonForwardIter> auto end = common.end();
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assert(end == CommonForwardIter(std::ranges::end(view)));
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}
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{
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CopyableView view{buf, buf + 8};
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std::ranges::common_view<CopyableView> const common(view);
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std::same_as<CommonIntIter> auto end = common.end();
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assert(end == CommonIntIter(std::ranges::end(view)));
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}
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}
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return 0;
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}
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