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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// template<forward_range V, forward_range Pattern>
// requires view<V> && view<Pattern> &&
// indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to>
// class split_view;
#include <ranges>
#include "test_macros.h"
#include "test_iterators.h"
template <class It>
using Range = std::ranges::subrange<It, sentinel_wrapper<It>>;
template <class View, class Pattern>
concept HasSplitView = requires { typename std::ranges::split_view<View, Pattern>; };
static_assert(HasSplitView<Range<int*>, Range<int*>>);
// !forward_range<V>
static_assert(!HasSplitView<Range<cpp20_input_iterator<int*>>, Range<int*>>);
// !forward_range<Pattern>
static_assert(!HasSplitView<Range<int*>, Range<cpp20_input_iterator<int*>>>);
struct NotAView {
int* begin() const;
int* end() const;
};
// !view<V>
static_assert(!HasSplitView<NotAView, Range<int*>>);
// !view<Pattern>
static_assert(!HasSplitView<Range<int*>, NotAView>);
// indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to
struct Foo {};
static_assert(!HasSplitView<Range<int*>, Range<Foo*>>);
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