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_BEGIN_IMPL_05062005_0903)
+#define FUSION_BEGIN_IMPL_05062005_0903
+
+namespace boost { namespace fusion
+{
+    struct filter_view_tag;
+
+    template <typename Category, typename First, typename Last, typename Pred>
+    struct filter_iterator;
+
+    namespace extension
+    {
+        template <typename Tag>
+        struct begin_impl;
+
+        template <>
+        struct begin_impl<filter_view_tag>
+        {
+            template <typename Sequence>
+            struct apply
+            {
+                typedef typename Sequence::first_type first_type;
+                typedef typename Sequence::last_type last_type;
+                typedef typename Sequence::pred_type pred_type;
+                typedef typename Sequence::category category;
+                typedef filter_iterator<category, first_type, last_type, pred_type> type;
+
+                BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+                static type
+                call(Sequence& s)
+                {
+                    return type(s.first());
+                }
+            };
+        };
+    }
+}}
+
+#endif
+
+