/*=============================================================================
- Copyright (c) 2001-2006 Joel de Guzman
+ Copyright (c) 2001-2011 Joel de Guzman
- Distributed under the Boost Software License, Version 1.0. (See accompanying
+ 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)
==============================================================================*/
#if !defined(FUSION_IS_SEQUENCE_05052005_1002)
#define FUSION_IS_SEQUENCE_05052005_1002
-#include <boost/type_traits/is_base_of.hpp>
#include <boost/fusion/support/sequence_base.hpp>
#include <boost/fusion/support/tag_of.hpp>
#include <boost/mpl/is_sequence.hpp>
#include <boost/mpl/or.hpp>
#include <boost/mpl/bool.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+#include <boost/type_traits/is_same.hpp>
namespace boost { namespace fusion
{
struct is_sequence_impl
{
template <typename Sequence>
- struct apply : is_base_of<sequence_root, Sequence> {};
+ struct apply
+ : is_convertible<Sequence, detail::from_sequence_convertible_type>
+ {};
};
template <>
{
template <typename T>
struct is_sequence
- : extension::is_sequence_impl<
+ : mpl::bool_<
+ (bool)extension::is_sequence_impl<
typename fusion::detail::tag_of<T>::type
- >::template apply<T>
+ >::template apply<T>::type::value
+ >
+ {};
+
+ template <typename Sequence, typename Enable = void>
+ struct is_native_fusion_sequence
+ : is_convertible<Sequence, detail::from_sequence_convertible_type>
{};
}
}}