hana/test/ext/boost/mpl/integral_c/logical.cpp
2017-01-07 14:14:18 -08:00

67 lines
1.7 KiB
C++

// 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/integral_c.hpp>
#include <boost/hana/assert.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/eval_if.hpp>
#include <boost/hana/functional/always.hpp>
#include <boost/hana/not.hpp>
#include <boost/hana/tuple.hpp>
#include <laws/base.hpp>
#include <laws/logical.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/integral_c.hpp>
namespace hana = boost::hana;
namespace mpl = boost::mpl;
int main() {
// eval_if
{
auto t = hana::test::ct_eq<3>{};
auto e = hana::test::ct_eq<4>{};
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::eval_if(mpl::true_{}, hana::always(t), hana::always(e)),
t
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::eval_if(mpl::false_{}, hana::always(t), hana::always(e)),
e
));
}
// not_
{
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::not_(mpl::true_{}),
mpl::false_{}
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::not_(mpl::false_{}),
mpl::true_{}
));
}
// laws
hana::test::TestLogical<hana::ext::boost::mpl::integral_c_tag<int>>{
hana::make_tuple(
mpl::int_<-2>{}, mpl::integral_c<int, 0>{}, mpl::integral_c<int, 3>{}
)
};
hana::test::TestLogical<hana::ext::boost::mpl::integral_c_tag<bool>>{
hana::make_tuple(
mpl::true_{}, mpl::false_{},
mpl::integral_c<bool, true>{}, mpl::integral_c<bool, false>{}
)
};
}