Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2005-2006 Dan Marsden
+
+    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_DISTANCE_IMPL_14122005_2104)
+#define FUSION_DISTANCE_IMPL_14122005_2104
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/iterator/distance.hpp>
+
+namespace boost { namespace fusion {
+
+    struct reverse_view_iterator_tag;
+
+    template <typename Iterator>
+    struct reverse_view_iterator;
+
+    namespace extension
+    {
+        template<typename Tag>
+        struct distance_impl;
+
+        template<>
+        struct distance_impl<reverse_view_iterator_tag>
+        {
+            template<typename First, typename Last>
+            struct apply
+            {
+                typedef typename First::first_type first_type;
+                typedef typename Last::first_type last_type;
+                typedef typename result_of::distance<last_type, first_type>::type type;
+
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static type
+                call(First const& first, Last const& last)
+                {
+                    return boost::fusion::distance(last.first, first.first);
+                }
+            };
+        };
+    }
+}}
+
+#endif