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_13122005_2139)
+#define FUSION_DISTANCE_IMPL_13122005_2139
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/iterator/distance.hpp>
+
+namespace boost { namespace fusion {
+    
+    struct transform_view_iterator_tag;
+    struct transform_view_iterator2_tag;
+
+    namespace extension
+    {
+        template<typename Tag>
+        struct distance_impl;
+
+        // Unary Version
+        template<>
+        struct distance_impl<transform_view_iterator_tag>
+        {
+            template<typename First, typename Last>
+            struct apply
+                : result_of::distance<typename First::first_type, typename Last::first_type>
+            {
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static 
+                typename result_of::distance<typename First::first_type, typename Last::first_type>::type
+                call(First const& first, Last const& last)
+                {
+                    return boost::fusion::distance(first.first, last.first);
+                }
+            };
+        };
+
+        // Binary Version
+        template<>
+        struct distance_impl<transform_view_iterator2_tag>
+        {
+            template<typename First, typename Last>
+            struct apply
+                : result_of::distance<typename First::first1_type, typename Last::first1_type>
+            {
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static 
+                typename result_of::distance<typename First::first1_type, typename Last::first1_type>::type
+                call(First const& first, Last const& last)
+                {
+                    return boost::fusion::distance(first.first1, last.first1);
+                }
+            };
+        };
+    }
+}}
+
+#endif