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-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
10
11 // template <class R, class P>
12 // split_view(R&&, P&&) -> split_view<views::all_t<R>, views::all_t<P>>;
13 //
14 // template <input_range R>
15 // split_view(R&&, range_value_t<R>) -> split_view<views::all_t<R>, single_view<range_value_t<R>>>;
16
17 #include <concepts>
18 #include <ranges>
19 #include <type_traits>
20 #include <utility>
21
22 struct Container {
23 int* begin() const;
24 int* end() const;
25 };
26
27 struct View : std::ranges::view_base {
28 int* begin() const;
29 int* end() const;
30 };
31
32 template <class I1, class I2, class ExpectedView, class ExpectedPattern>
test()33 constexpr void test() {
34 static_assert(std::is_same_v<decltype(std::ranges::split_view(std::declval<I1>(), std::declval<I2>())),
35 std::ranges::split_view<ExpectedView, ExpectedPattern>>);
36 }
37
testCtad()38 constexpr void testCtad() {
39 // (Range, Pattern)
40 test<View, View, View, View>();
41 test<Container&, Container&, std::ranges::ref_view<Container>, std::ranges::ref_view<Container>>();
42 test<Container&&, Container&&, std::ranges::owning_view<Container>, std::ranges::owning_view<Container>>();
43
44 // (Range, RangeElement)
45 test<Container&, int, std::ranges::ref_view<Container>, std::ranges::single_view<int>>();
46 test<View, int, View, std::ranges::single_view<int>>();
47
48 // (Range, RangeElement) with implicit conversion.
49 test<Container&, bool, std::ranges::ref_view<Container>, std::ranges::single_view<int>>();
50 test<View, bool, View, std::ranges::single_view<int>>();
51 }
52