//===----------------------------------------------------------------------===//
//
// 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
// constexpr std::ranges::filter_view::<iterator>(filter_view&, iterator_t<V>);
#include <ranges>
#include <array>
#include <cassert>
#include <utility>
#include "test_iterators.h"
#include "../types.h"
template <class Iter, class Sent = sentinel_wrapper<Iter>>
constexpr void test() {
using View = minimal_view<Iter, Sent>;
using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
using FilterIterator = std::ranges::iterator_t<FilterView>;
std::array<int, 10> array{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
View view(Iter(array.data()), Sent(Iter(array.data() + array.size())));
Iter iter = view.begin();
FilterView filter_view(std::move(view), AlwaysTrue{});
FilterIterator filter_iter(filter_view, std::move(iter));
assert(base(filter_iter.base()) == array.data());
}
constexpr bool tests() {
test<cpp17_input_iterator<int*>>();
test<cpp20_input_iterator<int*>>();
test<forward_iterator<int*>>();
test<bidirectional_iterator<int*>>();
test<random_access_iterator<int*>>();
test<contiguous_iterator<int*>>();
test<int*>();
return true;
}
int main(int, char**) {
tests();
static_assert(tests());
return 0;
}