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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 iterator_t<V> base() const;
#include <cassert>
#include <ranges>
#include "../types.h"
struct Iter : ForwardIterBase<Iter> {
int i;
constexpr Iter() = default;
constexpr Iter(int ii) : i(ii) {}
};
constexpr bool test() {
// base only has one const overload
using SplitView = std::ranges::split_view<std::ranges::subrange<Iter>, std::ranges::subrange<Iter>>;
using SplitIter = std::ranges::iterator_t<SplitView>;
// const &
{
SplitView sv;
const SplitIter it{sv, Iter{5}, {}};
std::same_as<Iter> decltype(auto) base = it.base();
assert(base.i == 5);
}
// &
{
SplitView sv;
SplitIter it{sv, Iter{5}, {}};
std::same_as<Iter> decltype(auto) base = it.base();
assert(base.i == 5);
}
// &&
{
SplitView sv;
SplitIter it{sv, Iter{5}, {}};
std::same_as<Iter> decltype(auto) base = std::move(it).base();
assert(base.i == 5);
}
// const &&
{
SplitView sv;
const SplitIter it{sv, Iter{5}, {}};
std::same_as<Iter> decltype(auto) base = std::move(it).base();
assert(base.i == 5);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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