| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 10 | |
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| 11 | // template<class T> |
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| 12 | // concept sized_range; |
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| 13 | |
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| 14 | #include <ranges> |
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| 15 | |
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| 16 | #include "test_iterators.h" |
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| 17 | |
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| 18 | |
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| 19 | |
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| 20 | static_assert(std::ranges::sized_range<int[5]>); |
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| 21 | static_assert(std::ranges::sized_range<int (&)[5]>); |
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| 22 | static_assert(!std::ranges::sized_range<int (&)[]>); |
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| 23 | static_assert(!std::ranges::sized_range<int[]>); |
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| 24 | |
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| 25 | struct range_has_size { |
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| 26 | bidirectional_iterator<int*> begin(); |
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| 27 | bidirectional_iterator<int*> end(); |
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| 28 | int size(); |
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| 29 | }; |
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| 30 | static_assert(std::ranges::sized_range<range_has_size>); |
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| 31 | static_assert(!std::ranges::sized_range<range_has_size const>); |
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| 32 | |
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| 33 | struct range_has_const_size { |
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| 34 | bidirectional_iterator<int*> begin(); |
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| 35 | bidirectional_iterator<int*> end(); |
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| 36 | int size() const; |
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| 37 | }; |
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| 38 | static_assert(std::ranges::sized_range<range_has_const_size>); |
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| 39 | static_assert(!std::ranges::sized_range<range_has_const_size const>); |
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| 40 | |
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| 41 | struct const_range_has_size { |
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| 42 | bidirectional_iterator<int*> begin() const; |
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| 43 | bidirectional_iterator<int*> end() const; |
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| 44 | int size(); |
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| 45 | }; |
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| 46 | static_assert(std::ranges::sized_range<const_range_has_size>); |
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| 47 | static_assert(std::ranges::range<const_range_has_size const>); |
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| 48 | static_assert(!std::ranges::sized_range<const_range_has_size const>); |
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| 49 | |
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| 50 | struct const_range_has_const_size { |
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| 51 | bidirectional_iterator<int*> begin() const; |
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| 52 | bidirectional_iterator<int*> end() const; |
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| 53 | int size() const; |
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| 54 | }; |
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| 55 | static_assert(std::ranges::sized_range<const_range_has_const_size>); |
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| 56 | static_assert(std::ranges::sized_range<const_range_has_const_size const>); |
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| 57 | |
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| 58 | struct sized_sentinel_range_has_size { |
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| 59 | int* begin(); |
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| 60 | int* end(); |
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| 61 | }; |
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| 62 | static_assert(std::ranges::sized_range<sized_sentinel_range_has_size>); |
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| 63 | static_assert(!std::ranges::sized_range<sized_sentinel_range_has_size const>); |
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| 64 | |
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| 65 | struct const_sized_sentinel_range_has_size { |
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| 66 | int* begin() const; |
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| 67 | int* end() const; |
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| 68 | }; |
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| 69 | static_assert(std::ranges::sized_range<const_sized_sentinel_range_has_size>); |
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| 70 | static_assert(std::ranges::sized_range<const_sized_sentinel_range_has_size const>); |
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| 71 | |
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| 72 | struct non_range_has_size { |
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| 73 | int size() const; |
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| 74 | }; |
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| 75 | static_assert(requires(non_range_has_size const x) { std::ranges::size(x); }); |
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| 76 | static_assert(!std::ranges::sized_range<non_range_has_size>); |
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| 77 | static_assert(!std::ranges::sized_range<non_range_has_size const>); |
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| 78 | |
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