Initial move from Spirit CVS

[SVN r34896]

include/boost/fusion/support/is_view.hpp

@@ -0,0 +1,37 @@
+/*=============================================================================
+    Copyright (c) 2001-2006 Joel de Guzman
+
+    Use, modification and distribution is subject to 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_IS_VIEW_03202006_0015)
+#define FUSION_IS_VIEW_03202006_0015
+
+#include <boost/fusion/support/detail/is_view.hpp>
+#include <boost/fusion/support/tag_of.hpp>
+
+namespace boost { namespace fusion 
+{
+    namespace extension
+    {
+        template<typename Tag>
+        struct is_view_impl
+        {
+            template<typename T>
+            struct apply
+                : detail::fusion_is_view<T>
+            {};
+        };
+    }
+
+    namespace traits
+    {
+        template <typename T>
+        struct is_view : 
+            extension::is_view_impl<typename detail::tag_of<T>::type>::
+                template apply<T>::type
+        {};
+}}}
+
+#endif