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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 explicit elements_view(V base);
#include <cassert>
#include <ranges>
#include <tuple>
#include <type_traits>
#include <utility>
#include "MoveOnly.h"
struct View : std::ranges::view_base {
MoveOnly mo;
std::tuple<int>* begin() const;
std::tuple<int>* end() const;
};
// Test Explicit
static_assert(std::is_constructible_v<std::ranges::elements_view<View, 0>, View>);
static_assert(!std::is_convertible_v<View, std::ranges::elements_view<View, 0>>);
constexpr bool test() {
{
std::ranges::elements_view<View, 0> ev{View{{}, MoveOnly{5}}};
assert(std::move(ev).base().mo.get() == 5);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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