Fusion: added size_impl for nview

[SVN r56610]

include/boost/fusion/view/nview/detail/nview_impl.hpp

@@ -10,7 +10,7 @@
 #if !defined(BOOST_FUSION_NVIEW_IMPL_SEP_23_2009_1017PM)
 #define BOOST_FUSION_NVIEW_IMPL_SEP_23_2009_1017PM
 
-//#include <climits>
+#include <climits>
 #include <boost/preprocessor/cat.hpp>
 #include <boost/preprocessor/repeat.hpp>
 #include <boost/preprocessor/iterate.hpp>

include/boost/fusion/view/nview/detail/size_impl.hpp

@@ -0,0 +1,38 @@
+/*=============================================================================
+    Copyright (c) 2001-2006 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_NVIEW_SIZE_IMPL_OCT_06_2009_0525PM)
+#define FUSION_NVIEW_SIZE_IMPL_OCT_06_2009_0525PM
+
+#include <boost/fusion/iterator/distance.hpp>
+#include <boost/fusion/sequence/intrinsic/begin.hpp>
+#include <boost/fusion/sequence/intrinsic/end.hpp>
+
+namespace boost { namespace fusion
+{
+    struct nview_tag;
+
+    namespace extension
+    {
+        template <typename Tag>
+        struct size_impl;
+
+        template <>
+        struct size_impl<nview_tag>
+        {
+            template <typename Sequence>
+            struct apply
+                : result_of::distance<
+                    typename result_of::begin<Sequence>::type
+                  , typename result_of::end<Sequence>::type>
+            {};
+        };
+    }
+}}
+
+#endif
+
+

include/boost/fusion/view/nview/nview_iterator.hpp

@@ -13,6 +13,7 @@
 #include <boost/fusion/sequence/intrinsic/end.hpp>
 #include <boost/fusion/adapted/mpl/mpl_iterator.hpp>
 
+#include <boost/fusion/view/nview/detail/size_impl.hpp>
 #include <boost/fusion/view/nview/detail/begin_impl.hpp>
 #include <boost/fusion/view/nview/detail/end_impl.hpp>
 #include <boost/fusion/view/nview/detail/deref_impl.hpp>