hana/test/adapted/std_integer_sequence/iterable.cpp

/*
 * Copyright Louis Dionne 2014
 * Distributed under the Boost Software License, Version 1.0.
 *         (See accompanying file LICENSE.md or copy at
 *             http://www.boost.org/LICENSE_1_0.txt)
 */

#include <boost/hana/adapted/std_integer_sequence.hpp>

#include <boost/hana/detail/static_assert.hpp>

#include <utility>
using namespace boost::hana;


int main() {
    BOOST_HANA_STATIC_ASSERT(is_empty(std::index_sequence<>{}));
    BOOST_HANA_STATIC_ASSERT(!is_empty(std::index_sequence<0>{}));
    BOOST_HANA_STATIC_ASSERT(!is_empty(std::index_sequence<1>{}));

    BOOST_HANA_STATIC_ASSERT(head(std::index_sequence<0>{}) == 0);
    BOOST_HANA_STATIC_ASSERT(head(std::index_sequence<0, 1>{}) == 0);

    BOOST_HANA_STATIC_ASSERT(equal(tail(std::index_sequence<0>{}), std::index_sequence<>{}));
    BOOST_HANA_STATIC_ASSERT(equal(tail(std::index_sequence<0, 1>{}), std::index_sequence<1>{}));
    BOOST_HANA_STATIC_ASSERT(equal(tail(std::index_sequence<0, 1, 2>{}), std::index_sequence<1, 2>{}));
}