Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+
+    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_DEREF_IMPL_07202005_0851)
+#define FUSION_DEREF_IMPL_07202005_0851
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/iterator/deref.hpp>
+#include <boost/fusion/iterator/prior.hpp>
+
+namespace boost { namespace fusion
+{
+    struct reverse_view_iterator_tag;
+
+    namespace extension
+    {
+        template <typename Tag>
+        struct deref_impl;
+
+        template <>
+        struct deref_impl<reverse_view_iterator_tag>
+        {
+            template <typename Iterator>
+            struct apply
+            {
+                typedef typename
+                    result_of::deref<
+                        typename result_of::prior<
+                            typename Iterator::first_type
+                        >::type
+                    >::type
+                type;
+    
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static type
+                call(Iterator const& i)
+                {
+                    return *fusion::prior(i.first);
+                }
+            };
+        };
+    }
+}}
+
+#endif
+
+