/*
@copyright Louis Dionne 2014
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/list.hpp>

#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
using namespace boost::hana;


template <int ...i>
BOOST_HANA_CONSTEXPR_LAMBDA auto ilist = list_c<int, i...>;

int main() {
    BOOST_HANA_STATIC_ASSERT(take(int_<0>, list()) == list());
    BOOST_HANA_STATIC_ASSERT(take(int_<1>, list()) == list());
    BOOST_HANA_STATIC_ASSERT(take(int_<2>, list()) == list());

    BOOST_HANA_STATIC_ASSERT(take(int_<0>, ilist<0>) == list());
    BOOST_HANA_STATIC_ASSERT(take(int_<1>, ilist<0>) == ilist<0>);
    BOOST_HANA_STATIC_ASSERT(take(int_<2>, ilist<0>) == ilist<0>);
    BOOST_HANA_STATIC_ASSERT(take(int_<3>, ilist<0>) == ilist<0>);

    BOOST_HANA_STATIC_ASSERT(take(int_<0>, ilist<0, 1>) == list());
    BOOST_HANA_STATIC_ASSERT(take(int_<1>, ilist<0, 1>) == ilist<0>);
    BOOST_HANA_STATIC_ASSERT(take(int_<2>, ilist<0, 1>) == ilist<0, 1>);
    BOOST_HANA_STATIC_ASSERT(take(int_<3>, ilist<0, 1>) == ilist<0, 1>);
}