34 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++17, c++2010 11// template<class T, class Bound>12// repeat_view(T, Bound) -> repeat_view<T, Bound>;13 14#include <concepts>15#include <ranges>16#include <utility>17 18struct Empty {};19 20// clang-format off21static_assert(std::same_as<decltype(std::ranges::repeat_view(Empty())), std::ranges::repeat_view<Empty>>);22static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&>())), std::ranges::repeat_view<Empty>>);23static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&&>())), std::ranges::repeat_view<Empty>>);24static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1)), std::ranges::repeat_view<int, int>>);25static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1U)), std::ranges::repeat_view<int, unsigned>>);26static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1UL)), std::ranges::repeat_view<int, unsigned long>>);27 28using RPV = std::ranges::repeat_view<const char*>;29static_assert(std::same_as<decltype(std::ranges::repeat_view("foo", std::unreachable_sentinel)), RPV>); // OK30static_assert(std::same_as<decltype(std::ranges::repeat_view(+"foo", std::unreachable_sentinel)), RPV>); // OK31static_assert(std::same_as<decltype(std::ranges::repeat_view("foo")), RPV>); // OK since LWG405332static_assert(std::same_as<decltype(std::ranges::repeat_view(+"foo")), RPV>); // OK33// clang-format on34