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// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/at.hpp>
#include <boost/hana/back.hpp>
#include <boost/hana/front.hpp>
#include <boost/hana/tuple.hpp>
#include <utility>
namespace hana = boost::hana;
// This test checks for move-only friendliness and reference semantics.
struct MoveOnly {
MoveOnly() = default;
MoveOnly(MoveOnly&&) = default;
MoveOnly& operator=(MoveOnly&&) = default;
MoveOnly(MoveOnly const&) = delete;
MoveOnly& operator=(MoveOnly const&) = delete;
};
int main() {
{
auto xs = hana::make_tuple(MoveOnly{});
auto by_val = [](auto) { };
by_val(std::move(xs));
by_val(hana::front(std::move(xs)));
by_val(hana::at_c<0>(std::move(xs)));
by_val(hana::back(std::move(xs)));
}
{
auto const& xs = hana::make_tuple(MoveOnly{});
auto by_const_ref = [](auto const&) { };
by_const_ref(xs);
by_const_ref(hana::front(xs));
by_const_ref(hana::at_c<0>(xs));
by_const_ref(hana::back(xs));
}
{
auto xs = hana::make_tuple(MoveOnly{});
auto by_ref = [](auto&) { };
by_ref(xs);
by_ref(hana::front(xs));
by_ref(hana::at_c<0>(xs));
by_ref(hana::back(xs));
}
}
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