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/*!
@file
Defines `boost::hana::is_a` and `boost::hana::is_an`.
@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)
*/
#ifndef BOOST_HANA_CORE_IS_A_HPP
#define BOOST_HANA_CORE_IS_A_HPP
#include <boost/hana/fwd/core/is_a.hpp>
#include <boost/hana/bool.hpp>
#include <boost/hana/config.hpp>
#include <boost/hana/core/tag_of.hpp>
#include <type_traits>
BOOST_HANA_NAMESPACE_BEGIN
//////////////////////////////////////////////////////////////////////////
// is_a
//////////////////////////////////////////////////////////////////////////
template <typename DataType, typename T>
struct is_a_t<DataType, T>
: integral_constant<bool,
std::is_same<DataType, typename hana::tag_of<T>::type>::value
>
{ };
template <typename DataType>
struct is_a_t<DataType> {
template <typename T>
constexpr auto operator()(T const&) const
{ return hana::is_a<DataType, T>; }
};
BOOST_HANA_NAMESPACE_END
#endif // !BOOST_HANA_CORE_IS_A_HPP
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