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+/*=============================================================================
+ Copyright (c) 2018 Kohei Takahashi
+
+ Distributed under the Boost Software License, Version 1.0. (See accompanying
+ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+==============================================================================*/
+#ifndef BOOST_FUSION_IS_NATIVE_FUSION_SEQUENCE
+#define BOOST_FUSION_IS_NATIVE_FUSION_SEQUENCE
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/support/sequence_base.hpp>
+#include <boost/mpl/and.hpp>
+#include <boost/type_traits/is_complete.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+
+namespace boost { namespace fusion { namespace detail
+{
+ template <typename Sequence>
+ struct is_native_fusion_sequence
+ : mpl::and_<
+ is_complete<Sequence>
+ , is_convertible<Sequence, detail::from_sequence_convertible_type>
+ >
+ {};
+}}}
+
+#endif