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- // Copyright Louis Dionne 2013-2016
- // 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/core/tag_of.hpp>
- #include <boost/hana/ext/std/integral_constant.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/pair.hpp>
- #include <type_traits>
- namespace hana = boost::hana;
- int main() {
- {
- struct T { }; struct U { };
- static_assert(std::is_same<
- hana::tag_of<hana::pair<T, U>>::type,
- hana::pair_tag
- >{}, "");
- }
- // Bug #1
- {
- using Pair = hana::pair<hana::integral_constant<int, 3>, int>;
- using PairTag = hana::tag_of<Pair>::type;
- using Tag = hana::tag_of<std::integral_constant<unsigned long, 0>>::type;
- }
- // Bug #2
- {
- using Pair = hana::pair<std::integral_constant<int, 3>, int>;
- using PairTag = hana::tag_of<Pair>::type;
- using Tag = hana::tag_of<std::integral_constant<unsigned long, 0>>::type;
- }
- }
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