d8fad66149
* adds `sized_range` and conformance tests * moves `disable_sized_range` into namespace `std::ranges` * removes explicit type parameter Implements part of P0896 'The One Ranges Proposal'. Differential Revision: https://reviews.llvm.org/D102434
54 lines
1.4 KiB
C++
54 lines
1.4 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
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// UNSUPPORTED: libcpp-no-concepts
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// <ranges>
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// template<class T>
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// concept view = ...;
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#include <ranges>
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#include "test_macros.h"
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struct View : std::ranges::view_base {
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View() = default;
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View(View&&) = default;
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View& operator=(View&&) = default;
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friend int* begin(View&);
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friend int* begin(View const&);
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friend int* end(View&);
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friend int* end(View const&);
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};
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namespace subsume_range {
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template <std::ranges::view>
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constexpr bool test() { return true; }
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template <std::ranges::range>
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constexpr bool test() { return false; }
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static_assert(test<View>());
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}
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namespace subsume_movable {
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template <std::ranges::view>
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constexpr bool test() { return true; }
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template <std::movable>
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constexpr bool test() { return false; }
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static_assert(test<View>());
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}
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namespace subsume_default_initializable {
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template <std::ranges::view>
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constexpr bool test() { return true; }
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template <std::default_initializable>
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constexpr bool test() { return false; }
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static_assert(test<View>());
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}
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