| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // constexpr V base() const& requires copy_constructible<V> { return base_; } |
| // constexpr V base() && { return std::move(base_); } |
| |
| #include <ranges> |
| |
| #include <cassert> |
| #include <concepts> |
| |
| #include "types.h" |
| |
| constexpr bool test() { |
| int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8}; |
| |
| // Test common ranges. |
| { |
| // Test non-const. |
| { |
| auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8}); |
| |
| std::same_as<BidirRange> auto base = rev.base(); |
| assert(base.begin_ == buffer); |
| assert(base.end_ == buffer + 8); |
| |
| std::same_as<BidirRange> auto moved = std::move(rev).base(); |
| assert(moved.begin_ == buffer); |
| assert(moved.end_ == buffer + 8); |
| } |
| // Test const. |
| { |
| const auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8}); |
| |
| std::same_as<BidirRange> auto base = rev.base(); |
| assert(base.begin_ == buffer); |
| assert(base.end_ == buffer + 8); |
| |
| std::same_as<BidirRange> auto moved = std::move(rev).base(); |
| assert(moved.begin_ == buffer); |
| assert(moved.end_ == buffer + 8); |
| } |
| } |
| // Test non-common ranges. |
| { |
| // Test non-const (also move only). |
| { |
| auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer, buffer + 8}); |
| std::same_as<BidirSentRange<MoveOnly>> auto base = std::move(rev).base(); |
| assert(base.begin_ == buffer); |
| assert(base.end_ == buffer + 8); |
| } |
| // Test const. |
| { |
| const auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer, buffer + 8}); |
| |
| std::same_as<BidirSentRange<Copyable>> auto base = rev.base(); |
| assert(base.begin_ == buffer); |
| assert(base.end_ == buffer + 8); |
| |
| std::same_as<BidirSentRange<Copyable>> auto moved = std::move(rev).base(); |
| assert(moved.begin_ == buffer); |
| assert(moved.end_ == buffer + 8); |
| } |
| } |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| test(); |
| static_assert(test()); |
| |
| return 0; |
| } |