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 // UNSUPPORTED: libcpp-no-concepts 11 // UNSUPPORTED: gcc-10 12 // UNSUPPORTED: libcpp-has-no-incomplete-ranges 13 14 // constexpr V base() const& requires copy_constructible<V> { return base_; } 15 // constexpr V base() && { return std::move(base_); } 16 17 #include <ranges> 18 #include <cassert> 19 20 #include "test_macros.h" 21 #include "types.h" 22 23 constexpr bool test() { 24 int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8}; 25 26 // Test common ranges. 27 { 28 // Test non-const. 29 { 30 auto rev = std::ranges::reverse_view(BidirRange{buffer}); 31 assert(rev.base().ptr_ == buffer); 32 assert(std::move(rev).base().ptr_ == buffer); 33 34 ASSERT_SAME_TYPE(decltype(rev.base()), BidirRange); 35 ASSERT_SAME_TYPE(decltype(std::move(rev).base()), BidirRange); 36 } 37 // Test const. 38 { 39 const auto rev = std::ranges::reverse_view(BidirRange{buffer}); 40 assert(rev.base().ptr_ == buffer); 41 assert(std::move(rev).base().ptr_ == buffer); 42 43 ASSERT_SAME_TYPE(decltype(rev.base()), BidirRange); 44 ASSERT_SAME_TYPE(decltype(std::move(rev).base()), BidirRange); 45 } 46 } 47 // Test non-common ranges. 48 { 49 // Test non-const (also move only). 50 { 51 auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer}); 52 assert(std::move(rev).base().ptr_ == buffer); 53 54 ASSERT_SAME_TYPE(decltype(std::move(rev).base()), BidirSentRange<MoveOnly>); 55 } 56 // Test const. 57 { 58 const auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer}); 59 assert(rev.base().ptr_ == buffer); 60 assert(std::move(rev).base().ptr_ == buffer); 61 62 ASSERT_SAME_TYPE(decltype(rev.base()), BidirSentRange<Copyable>); 63 ASSERT_SAME_TYPE(decltype(std::move(rev).base()), BidirSentRange<Copyable>); 64 } 65 } 66 67 return true; 68 } 69 70 int main(int, char**) { 71 test(); 72 static_assert(test()); 73 74 return 0; 75 } 76