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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, c++20
// <ranges>
// template <class Range, class Pred>
// chunk_by_view(Range&&, Pred) -> chunk_by_view<views::all_t<Range>, Pred>;
#include <ranges>
#include <cassert>
#include <type_traits>
#include "test_iterators.h"
struct View : std::ranges::view_base {
View() = default;
forward_iterator<int*> begin() const;
sentinel_wrapper<forward_iterator<int*>> end() const;
};
static_assert(std::ranges::view<View>);
// A range that is not a view
struct Range {
Range() = default;
forward_iterator<int*> begin() const;
sentinel_wrapper<forward_iterator<int*>> end() const;
};
static_assert(std::ranges::range<Range>);
static_assert(!std::ranges::view<Range>);
struct Pred {
constexpr bool operator()(int x, int y) const { return x <= y; }
};
constexpr bool test() {
{
View v;
Pred pred;
std::ranges::chunk_by_view view(v, pred);
static_assert(std::is_same_v<decltype(view), std::ranges::chunk_by_view<View, Pred>>);
}
{
Range r;
Pred pred;
std::ranges::chunk_by_view view(r, pred);
static_assert(std::is_same_v<decltype(view), std::ranges::chunk_by_view<std::ranges::ref_view<Range>, Pred>>);
}
{
Pred pred;
std::ranges::chunk_by_view view(Range{}, pred);
static_assert(std::is_same_v<decltype(view), std::ranges::chunk_by_view<std::ranges::owning_view<Range>, Pred>>);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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