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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/ext/boost/mpl/vector.hpp>
#include <boost/hana/assert.hpp>
#include <boost/hana/core/to.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/type.hpp>
#include <support/seq.hpp>
#include <boost/mpl/vector.hpp>
namespace hana = boost::hana;
namespace mpl = boost::mpl;
struct t1; struct t2; struct t3; struct t4;
int main() {
// Conversion from any `Foldable` containing `type`s
auto foldable = ::seq;
auto to_vector = hana::to<hana::ext::boost::mpl::vector_tag>;
BOOST_HANA_CONSTANT_CHECK(hana::equal(
to_vector(foldable()),
mpl::vector<>{}
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
to_vector(foldable(hana::type_c<t1>)),
mpl::vector<t1>{}
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
to_vector(foldable(hana::type_c<t1>, hana::type_c<t2>)),
mpl::vector<t1, t2>{}
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
to_vector(foldable(hana::type_c<t1>, hana::type_c<t2>, hana::type_c<t3>)),
mpl::vector<t1, t2, t3>{}
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
to_vector(foldable(hana::type_c<t1>, hana::type_c<t2>, hana::type_c<t3>, hana::type_c<t4>)),
mpl::vector<t1, t2, t3, t4>{}
));
}
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