1*a2b3ab8fSHui //===----------------------------------------------------------------------===//
2*a2b3ab8fSHui //
3*a2b3ab8fSHui // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*a2b3ab8fSHui // See https://llvm.org/LICENSE.txt for license information.
5*a2b3ab8fSHui // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*a2b3ab8fSHui //
7*a2b3ab8fSHui //===----------------------------------------------------------------------===//
8*a2b3ab8fSHui
9*a2b3ab8fSHui // UNSUPPORTED: c++03, c++11, c++14, c++17
10*a2b3ab8fSHui
11*a2b3ab8fSHui // template <class R, class P>
12*a2b3ab8fSHui // split_view(R&&, P&&) -> split_view<views::all_t<R>, views::all_t<P>>;
13*a2b3ab8fSHui //
14*a2b3ab8fSHui // template <input_range R>
15*a2b3ab8fSHui // split_view(R&&, range_value_t<R>) -> split_view<views::all_t<R>, single_view<range_value_t<R>>>;
16*a2b3ab8fSHui
17*a2b3ab8fSHui #include <concepts>
18*a2b3ab8fSHui #include <ranges>
19*a2b3ab8fSHui #include <type_traits>
20*a2b3ab8fSHui #include <utility>
21*a2b3ab8fSHui
22*a2b3ab8fSHui struct Container {
23*a2b3ab8fSHui int* begin() const;
24*a2b3ab8fSHui int* end() const;
25*a2b3ab8fSHui };
26*a2b3ab8fSHui
27*a2b3ab8fSHui struct View : std::ranges::view_base {
28*a2b3ab8fSHui int* begin() const;
29*a2b3ab8fSHui int* end() const;
30*a2b3ab8fSHui };
31*a2b3ab8fSHui
32*a2b3ab8fSHui template <class I1, class I2, class ExpectedView, class ExpectedPattern>
test()33*a2b3ab8fSHui constexpr void test() {
34*a2b3ab8fSHui static_assert(std::is_same_v<decltype(std::ranges::split_view(std::declval<I1>(), std::declval<I2>())),
35*a2b3ab8fSHui std::ranges::split_view<ExpectedView, ExpectedPattern>>);
36*a2b3ab8fSHui }
37*a2b3ab8fSHui
testCtad()38*a2b3ab8fSHui constexpr void testCtad() {
39*a2b3ab8fSHui // (Range, Pattern)
40*a2b3ab8fSHui test<View, View, View, View>();
41*a2b3ab8fSHui test<Container&, Container&, std::ranges::ref_view<Container>, std::ranges::ref_view<Container>>();
42*a2b3ab8fSHui test<Container&&, Container&&, std::ranges::owning_view<Container>, std::ranges::owning_view<Container>>();
43*a2b3ab8fSHui
44*a2b3ab8fSHui // (Range, RangeElement)
45*a2b3ab8fSHui test<Container&, int, std::ranges::ref_view<Container>, std::ranges::single_view<int>>();
46*a2b3ab8fSHui test<View, int, View, std::ranges::single_view<int>>();
47*a2b3ab8fSHui
48*a2b3ab8fSHui // (Range, RangeElement) with implicit conversion.
49*a2b3ab8fSHui test<Container&, bool, std::ranges::ref_view<Container>, std::ranges::single_view<int>>();
50*a2b3ab8fSHui test<View, bool, View, std::ranges::single_view<int>>();
51*a2b3ab8fSHui }
52