83 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710 11// constexpr V base() const& requires copy_constructible<V> { return base_; }12// constexpr V base() && { return std::move(base_); }13 14#include <ranges>15 16#include <cassert>17#include <concepts>18 19#include "types.h"20 21constexpr bool test() {22 int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};23 24 // Test common ranges.25 {26 // Test non-const.27 {28 auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});29 30 std::same_as<BidirRange> auto base = rev.base();31 assert(base.begin_ == buffer);32 assert(base.end_ == buffer + 8);33 34 std::same_as<BidirRange> auto moved = std::move(rev).base();35 assert(moved.begin_ == buffer);36 assert(moved.end_ == buffer + 8);37 }38 // Test const.39 {40 const auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});41 42 std::same_as<BidirRange> auto base = rev.base();43 assert(base.begin_ == buffer);44 assert(base.end_ == buffer + 8);45 46 std::same_as<BidirRange> auto moved = std::move(rev).base();47 assert(moved.begin_ == buffer);48 assert(moved.end_ == buffer + 8);49 }50 }51 // Test non-common ranges.52 {53 // Test non-const (also move only).54 {55 auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer, buffer + 8});56 std::same_as<BidirSentRange<MoveOnly>> auto base = std::move(rev).base();57 assert(base.begin_ == buffer);58 assert(base.end_ == buffer + 8);59 }60 // Test const.61 {62 const auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer, buffer + 8});63 64 std::same_as<BidirSentRange<Copyable>> auto base = rev.base();65 assert(base.begin_ == buffer);66 assert(base.end_ == buffer + 8);67 68 std::same_as<BidirSentRange<Copyable>> auto moved = std::move(rev).base();69 assert(moved.begin_ == buffer);70 assert(moved.end_ == buffer + 8);71 }72 }73 74 return true;75}76 77int main(int, char**) {78 test();79 static_assert(test());80 81 return 0;82}83