diff options
Diffstat (limited to 'src/boost/libs/hana/example/type/metafunction_class.cpp')
-rw-r--r-- | src/boost/libs/hana/example/type/metafunction_class.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/type/metafunction_class.cpp b/src/boost/libs/hana/example/type/metafunction_class.cpp new file mode 100644 index 000000000..f01e26719 --- /dev/null +++ b/src/boost/libs/hana/example/type/metafunction_class.cpp @@ -0,0 +1,26 @@ +// 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/assert.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/type.hpp> + +#include <type_traits> +namespace hana = boost::hana; + + +struct f { template <typename ...> struct apply { struct type; }; }; +struct x; +struct y; + +BOOST_HANA_CONSTANT_CHECK(hana::metafunction_class<f>() == hana::type_c<f::apply<>::type>); +BOOST_HANA_CONSTANT_CHECK(hana::metafunction_class<f>(hana::type_c<x>) == hana::type_c<f::apply<x>::type>); +BOOST_HANA_CONSTANT_CHECK(hana::metafunction_class<f>(hana::type_c<x>, hana::type_c<y>) == hana::type_c<f::apply<x, y>::type>); + +static_assert(std::is_same< + decltype(hana::metafunction_class<f>)::apply<x, y>::type, + f::apply<x, y>::type +>::value, ""); + +int main() { } |