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) 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_ADVANCE_IMPL_20061024_2021)
+#define FUSION_ADVANCE_IMPL_20061024_2021
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/view/zip_view/zip_view_iterator_fwd.hpp>
+#include <boost/fusion/iterator/advance.hpp>
+#include <boost/fusion/algorithm/transformation/transform.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+
+namespace boost { namespace fusion {
+
+    struct zip_view_iterator_tag;
+
+    namespace detail
+    {
+        template<typename N>
+        struct poly_advance
+        {
+            template<typename Sig>
+            struct result;
+
+            template<typename N1, typename It>
+            struct result<poly_advance<N1>(It)>
+            {
+                typedef typename remove_reference<It>::type it;
+                typedef typename result_of::advance<it,N>::type type;
+            };
+
+            template<typename It>
+            BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+            typename result<poly_advance(It)>::type
+            operator()(const It& it) const
+            {
+                return fusion::advance<N>(it);
+            }
+        };
+    }
+
+    namespace extension
+    {
+        template<typename Tag>
+        struct advance_impl;
+
+        template<>
+        struct advance_impl<zip_view_iterator_tag>
+        {
+            template<typename It, typename N>
+            struct apply
+            {
+                typedef zip_view_iterator<
+                    typename result_of::transform<typename It::iterators, detail::poly_advance<N> >::type> type;
+
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static type
+                call(It const& it)
+                {
+                    return type(
+                        fusion::transform(it.iterators_, detail::poly_advance<N>()));
+                }
+            };
+        };
+    }
+}}
+
+#endif