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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
// constexpr reverse_iterator<iterator_t<V>> end();
// constexpr auto end() const requires common_range<const V>;
#include <ranges>
#include <cassert>
#include <utility>
#include "test_macros.h"
#include "types.h"
constexpr bool test() {
int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
// Common bidirectional range.
{
auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
assert(base(rev.end().base()) == buffer);
assert(base(std::move(rev).end().base()) == buffer);
ASSERT_SAME_TYPE(decltype(rev.end()), std::reverse_iterator<bidirectional_iterator<int*>>);
ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<int*>>);
}
// Const common bidirectional range.
{
const auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
assert(base(rev.end().base()) == buffer);
assert(base(std::move(rev).end().base()) == buffer);
ASSERT_SAME_TYPE(decltype(rev.end()), std::reverse_iterator<bidirectional_iterator<const int*>>);
ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<const int*>>);
}
// Non-common, non-const (move only) bidirectional range.
{
auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer, buffer + 8});
assert(base(std::move(rev).end().base()) == buffer);
ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<int*>>);
}
// Non-common, const bidirectional range.
{
auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer, buffer + 8});
assert(base(rev.end().base()) == buffer);
assert(base(std::move(rev).end().base()) == buffer);
ASSERT_SAME_TYPE(decltype(rev.end()), std::reverse_iterator<bidirectional_iterator<int*>>);
ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<int*>>);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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