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32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
/*
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@copyright Louis Dionne 2014
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/range.hpp>
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#include <boost/hana/detail/assert.hpp>
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#include <boost/hana/integral.hpp>
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#include <tuple>
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using namespace boost::hana;
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BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto ...xs) {
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return std::make_tuple(xs...);
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};
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int main() {
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BOOST_HANA_CONSTEXPR_ASSERT(unpack(range(int_<0>, int_<0>), f) == f());
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BOOST_HANA_CONSTEXPR_ASSERT(unpack(range(int_<0>, int_<1>), f) == f(int_<0>));
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BOOST_HANA_CONSTEXPR_ASSERT(unpack(range(int_<0>, int_<2>), f) == f(int_<0>, int_<1>));
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BOOST_HANA_CONSTEXPR_ASSERT(unpack(range(int_<0>, int_<3>), f) == f(int_<0>, int_<1>, int_<2>));
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BOOST_HANA_CONSTANT_ASSERT(length(range(int_<0>, int_<0>)) == int_<0>);
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BOOST_HANA_CONSTANT_ASSERT(length(range(int_<0>, int_<1>)) == int_<1>);
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BOOST_HANA_CONSTANT_ASSERT(length(range(int_<0>, int_<2>)) == int_<2>);
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BOOST_HANA_CONSTANT_ASSERT(length(range(int_<4>, int_<4>)) == int_<0>);
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BOOST_HANA_CONSTANT_ASSERT(length(range(int_<4>, int_<10>)) == int_<6>);
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}
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