| 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 R, class P> |
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| 12 | // split_view(R&&, P&&) -> split_view<views::all_t<R>, views::all_t<P>>; |
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| 13 | // |
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| 14 | // template <input_range R> |
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| 15 | // split_view(R&&, range_value_t<R>) -> split_view<views::all_t<R>, single_view<range_value_t<R>>>; |
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| 16 | |
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| 17 | #include <concepts> |
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| 18 | #include <ranges> |
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| 19 | #include <type_traits> |
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| 20 | #include <utility> |
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| 21 | |
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| 22 | struct Container { |
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| 23 | int* begin() const; |
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| 24 | int* end() const; |
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| 25 | }; |
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| 26 | |
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| 27 | struct View : std::ranges::view_base { |
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| 28 | int* begin() const; |
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| 29 | int* end() const; |
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| 30 | }; |
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| 31 | |
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| 32 | template <class I1, class I2, class ExpectedView, class ExpectedPattern> |
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| 33 | constexpr void test() { |
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| 34 | static_assert(std::is_same_v<decltype(std::ranges::split_view(std::declval<I1>(), std::declval<I2>())), |
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| 35 | std::ranges::split_view<ExpectedView, ExpectedPattern>>); |
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| 36 | } |
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| 37 | |
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| 38 | constexpr void testCtad() { |
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| 39 | // (Range, Pattern) |
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| 40 | test<View, View, View, View>(); |
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| 41 | test<Container&, Container&, std::ranges::ref_view<Container>, std::ranges::ref_view<Container>>(); |
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| 42 | test<Container&&, Container&&, std::ranges::owning_view<Container>, std::ranges::owning_view<Container>>(); |
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| 43 | |
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| 44 | // (Range, RangeElement) |
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| 45 | test<Container&, int, std::ranges::ref_view<Container>, std::ranges::single_view<int>>(); |
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| 46 | test<View, int, View, std::ranges::single_view<int>>(); |
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| 47 | |
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| 48 | // (Range, RangeElement) with implicit conversion. |
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| 49 | test<Container&, bool, std::ranges::ref_view<Container>, std::ranges::single_view<int>>(); |
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| 50 | test<View, bool, View, std::ranges::single_view<int>>(); |
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| 51 | } |
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| 52 | |
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