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+/*=============================================================================
+ Copyright (c) 2009 Hartmut Kaiser
+
+ 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(BOOST_FUSION_NVIEW_DEREF_IMPL_SEP_24_2009_0818AM)
+#define BOOST_FUSION_NVIEW_DEREF_IMPL_SEP_24_2009_0818AM
+
+#include <boost/fusion/iterator/deref.hpp>
+#include <boost/fusion/container/vector.hpp>
+
+namespace boost { namespace fusion
+{
+ struct nview_iterator_tag;
+
+ namespace extension
+ {
+ template<typename Tag>
+ struct deref_impl;
+
+ template<>
+ struct deref_impl<nview_iterator_tag>
+ {
+ template<typename Iterator>
+ struct apply
+ {
+ typedef typename Iterator::first_type first_type;
+ typedef typename Iterator::sequence_type sequence_type;
+
+ typedef typename result_of::deref<first_type>::type index;
+ typedef typename result_of::at<
+ typename sequence_type::sequence_type, index>::type type;
+
+ static type call(Iterator const& i)
+ {
+ return at<index>(i.seq.seq);
+ }
+ };
+ };
+
+ }
+
+}}
+
+#endif
+