| 1 | // Copyright Louis Dionne 2013-2022 |
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| 2 | // Distributed under the Boost Software License, Version 1.0. |
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| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) |
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| 4 | |
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| 5 | #include <boost/hana/ext/boost/mpl/vector.hpp> |
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| 6 | |
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| 7 | #include <boost/hana/assert.hpp> |
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| 8 | #include <boost/hana/core/to.hpp> |
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| 9 | #include <boost/hana/equal.hpp> |
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| 10 | #include <boost/hana/type.hpp> |
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| 11 | |
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| 12 | #include <support/seq.hpp> |
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| 13 | |
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| 14 | #include <boost/mpl/vector.hpp> |
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| 15 | namespace hana = boost::hana; |
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| 16 | namespace mpl = boost::mpl; |
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| 17 | |
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| 18 | |
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| 19 | struct t1; struct t2; struct t3; struct t4; |
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| 20 | |
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| 21 | int main() { |
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| 22 | // Conversion from any `Foldable` containing `type`s |
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| 23 | auto foldable = ::seq; |
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| 24 | auto to_vector = hana::to<hana::ext::boost::mpl::vector_tag>; |
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| 25 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
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| 26 | to_vector(foldable()), |
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| 27 | mpl::vector<>{} |
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| 28 | )); |
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| 29 | |
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| 30 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
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| 31 | to_vector(foldable(hana::type_c<t1>)), |
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| 32 | mpl::vector<t1>{} |
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| 33 | )); |
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| 34 | |
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| 35 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
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| 36 | to_vector(foldable(hana::type_c<t1>, hana::type_c<t2>)), |
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| 37 | mpl::vector<t1, t2>{} |
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| 38 | )); |
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| 39 | |
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| 40 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
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| 41 | to_vector(foldable(hana::type_c<t1>, hana::type_c<t2>, hana::type_c<t3>)), |
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| 42 | mpl::vector<t1, t2, t3>{} |
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| 43 | )); |
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| 44 | |
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| 45 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
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| 46 | to_vector(foldable(hana::type_c<t1>, hana::type_c<t2>, hana::type_c<t3>, hana::type_c<t4>)), |
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| 47 | mpl::vector<t1, t2, t3, t4>{} |
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| 48 | )); |
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| 49 | } |
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| 50 | |
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