Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2006 Eric Niebler
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying 
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(FUSION_IS_SEGMENTED_03202006_0015)
Chris@16: #define FUSION_IS_SEGMENTED_03202006_0015
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/mpl/bool.hpp>
Chris@16: #include <boost/fusion/support/tag_of.hpp>
Chris@16: 
Chris@16: namespace boost { namespace fusion 
Chris@16: {
Chris@16:     // Special tags:
Chris@16:     struct sequence_facade_tag;
Chris@16:     struct iterator_range_tag;
Chris@16: 
Chris@16:     namespace extension
Chris@16:     {
Chris@16:         template <typename Tag>
Chris@16:         struct is_segmented_impl
Chris@16:         {
Chris@16:             template <typename Sequence>
Chris@16:             struct apply
Chris@16:               : mpl::false_
Chris@16:             {};
Chris@16:         };
Chris@16: 
Chris@16:         template <>
Chris@16:         struct is_segmented_impl<sequence_facade_tag>
Chris@16:         {
Chris@16:             template <typename Sequence>
Chris@16:             struct apply : Sequence::is_segmented {};
Chris@16:         };
Chris@16: 
Chris@16:         template <>
Chris@16:         struct is_segmented_impl<iterator_range_tag>;
Chris@16:     }
Chris@16: 
Chris@16:     namespace traits
Chris@16:     {
Chris@16:         template <typename Sequence>
Chris@16:         struct is_segmented
Chris@16:           : mpl::bool_<
Chris@16:                 (bool)extension::is_segmented_impl<typename traits::tag_of<Sequence>::type>::
Chris@16:                     template apply<Sequence>::type::value
Chris@16:             >
Chris@16:         {
Chris@16:         };
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #endif