1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17
10
11// template<class R>
12// reverse_view(R&&) -> reverse_view<views::all_t<R>>;
13
14#include <ranges>
15
16#include <concepts>
17#include <utility>
18
19#include "test_iterators.h"
20
21struct View : std::ranges::view_base {
22 int *begin() const;
23 int *end() const;
24};
25
26struct Range {
27 int *begin() const;
28 int *end() const;
29};
30
31struct BorrowedRange {
32 int *begin() const;
33 int *end() const;
34};
35template<>
36inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
37
38void testCTAD() {
39 View v;
40 Range r;
41 BorrowedRange br;
42
43 static_assert(std::same_as<
44 decltype(std::ranges::reverse_view(v)),
45 std::ranges::reverse_view<View>
46 >);
47 static_assert(std::same_as<
48 decltype(std::ranges::reverse_view(std::move(v))),
49 std::ranges::reverse_view<View>
50 >);
51 static_assert(std::same_as<
52 decltype(std::ranges::reverse_view(r)),
53 std::ranges::reverse_view<std::ranges::ref_view<Range>>
54 >);
55 static_assert(std::same_as<
56 decltype(std::ranges::reverse_view(std::move(r))),
57 std::ranges::reverse_view<std::ranges::owning_view<Range>>
58 >);
59 static_assert(std::same_as<
60 decltype(std::ranges::reverse_view(br)),
61 std::ranges::reverse_view<std::ranges::ref_view<BorrowedRange>>
62 >);
63 static_assert(std::same_as<
64 decltype(std::ranges::reverse_view(std::move(br))),
65 std::ranges::reverse_view<std::ranges::owning_view<BorrowedRange>>
66 >);
67}
68

source code of libcxx/test/std/ranges/range.adaptors/range.reverse/ctad.compile.pass.cpp