0ecc1646cb
Implement - LWG4053 Unary call to `std::views::repeat` does not decay the argument - LWG4054 Repeating a `repeat_view` should repeat the view Signed-off-by: yronglin <yronglin777@gmail.com>
34 lines
1.8 KiB
C++
34 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// template<class T, class Bound>
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// repeat_view(T, Bound) -> repeat_view<T, Bound>;
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#include <concepts>
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#include <ranges>
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#include <utility>
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struct Empty {};
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// clang-format off
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static_assert(std::same_as<decltype(std::ranges::repeat_view(Empty())), std::ranges::repeat_view<Empty>>);
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static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&>())), std::ranges::repeat_view<Empty>>);
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static_assert(std::same_as<decltype(std::ranges::repeat_view(std::declval<Empty&&>())), std::ranges::repeat_view<Empty>>);
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static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1)), std::ranges::repeat_view<int, int>>);
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static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1U)), std::ranges::repeat_view<int, unsigned>>);
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static_assert(std::same_as<decltype(std::ranges::repeat_view(10, 1UL)), std::ranges::repeat_view<int, unsigned long>>);
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using RPV = std::ranges::repeat_view<const char*>;
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static_assert(std::same_as<decltype(std::ranges::repeat_view("foo", std::unreachable_sentinel)), RPV>); // OK
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static_assert(std::same_as<decltype(std::ranges::repeat_view(+"foo", std::unreachable_sentinel)), RPV>); // OK
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static_assert(std::same_as<decltype(std::ranges::repeat_view("foo")), RPV>); // OK since LWG4053
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static_assert(std::same_as<decltype(std::ranges::repeat_view(+"foo")), RPV>); // OK
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// clang-format on
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