68 lines
1.8 KiB
C++
68 lines
1.8 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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// template<class R>
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// reverse_view(R&&) -> reverse_view<views::all_t<R>>;
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#include <ranges>
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#include <concepts>
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#include <utility>
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#include "test_iterators.h"
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struct View : std::ranges::view_base {
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int *begin() const;
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int *end() const;
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};
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struct Range {
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int *begin() const;
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int *end() const;
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};
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struct BorrowedRange {
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int *begin() const;
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int *end() const;
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};
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template<>
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inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
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void testCTAD() {
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View v;
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Range r;
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BorrowedRange br;
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static_assert(std::same_as<
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decltype(std::ranges::reverse_view(v)),
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std::ranges::reverse_view<View>
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>);
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static_assert(std::same_as<
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decltype(std::ranges::reverse_view(std::move(v))),
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std::ranges::reverse_view<View>
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>);
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static_assert(std::same_as<
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decltype(std::ranges::reverse_view(r)),
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std::ranges::reverse_view<std::ranges::ref_view<Range>>
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>);
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static_assert(std::same_as<
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decltype(std::ranges::reverse_view(std::move(r))),
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std::ranges::reverse_view<std::ranges::owning_view<Range>>
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>);
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static_assert(std::same_as<
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decltype(std::ranges::reverse_view(br)),
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std::ranges::reverse_view<std::ranges::ref_view<BorrowedRange>>
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>);
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static_assert(std::same_as<
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decltype(std::ranges::reverse_view(std::move(br))),
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std::ranges::reverse_view<std::ranges::owning_view<BorrowedRange>>
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>);
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}
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