merge from trunk

[SVN r61043]

include/boost/fusion/adapted/class/detail/extension.hpp

@@ -0,0 +1,33 @@
+/*=============================================================================
+    Copyright (c) 2001-2009 Joel de Guzman
+    Copyright (c) 2005-2006 Dan Marsden
+    Copyright (c) 2010 Christopher Schmidt
+
+    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)
+==============================================================================*/
+
+#ifndef BOOST_FUSION_ADAPTED_CLASS_DETAIL_EXTENSION_HPP
+#define BOOST_FUSION_ADAPTED_CLASS_DETAIL_EXTENSION_HPP
+
+#include <boost/type_traits/remove_const.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+
+namespace boost { namespace fusion
+{
+    namespace detail
+    {
+        template <typename T, typename Dummy>
+        struct get_identity
+          : remove_const<typename remove_reference<T>::type>
+        {};
+    }
+
+    namespace extension
+    {
+        template <typename T, int N>
+        struct class_member_proxy;
+    }
+}}
+
+#endif