78 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// std::ranges::lazy_split_view::outer-iterator::value_type::end()12 13#include <ranges>14 15#include <cassert>16#include "../types.h"17 18constexpr bool test() {19 // `View` is a forward range.20 {21 CopyableView input("a");22 23 // Non-const.24 {25 SplitViewCopyable v(input, "b");26 auto val = *v.begin();27 28 static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);29 static_assert(noexcept(val.end()));30 [[maybe_unused]] auto e = val.end();31 }32 33 // Const.34 {35 SplitViewCopyable v(input, "b");36 const auto val = *v.begin();37 38 static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);39 static_assert(noexcept(val.end()));40 [[maybe_unused]] auto e = val.end();41 }42 }43 44 // `View` is an input range.45 {46 InputView input("a");47 48 // Non-const.49 {50 SplitViewInput v(input, 'b');51 auto val = *v.begin();52 53 static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);54 static_assert(noexcept(val.end()));55 [[maybe_unused]] auto e = val.end();56 }57 58 // Const.59 {60 SplitViewInput v(input, 'b');61 const auto val = *v.begin();62 63 static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);64 static_assert(noexcept(val.end()));65 [[maybe_unused]] auto e = val.end();66 }67 }68 69 return true;70}71 72int main(int, char**) {73 assert(test());74 static_assert(test());75 76 return 0;77}78