merge from trunk

[SVN r61043]

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

@@ -0,0 +1,68 @@
+/*=============================================================================
+    Copyright (c) 2001-2009 Joel de Guzman
+    Copyright (c) 2005-2006 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_CLASS_EXTENSION_OCTOBER_4_2009_839PM)
+#define FUSION_CLASS_EXTENSION_OCTOBER_4_2009_839PM
+
+#include <boost/type_traits/add_const.hpp>
+
+namespace boost { namespace fusion { namespace extension
+{
+    template <typename Class, int N>
+    struct class_member;
+
+    template <typename Class>
+    struct class_size;
+
+    template <typename Class, int N>
+    struct class_member<Class const, N> : class_member<Class, N> {};
+    //~ {
+        //~ typedef typename class_member<Class, N>::type type;
+        //~ typedef typename class_member<Class, N>::get_type get_type;
+        //~ typedef typename class_member<Class, N>::proxy proxy;
+
+        //~ static get_type&
+        //~ call(Class const& class_)
+        //~ {
+            //~ return class_member<Class, N>::call(
+                //~ const_cast<Class&>(class_));
+        //~ }
+    //~ };
+
+    template <typename Class>
+    struct class_size<Class const>
+        : class_size<Class>
+    {};
+
+    struct no_such_member;
+
+    template<typename Class, typename Key>
+    struct class_assoc_member
+    {
+        typedef no_such_member type;
+    };
+
+    template<typename Class, typename Key>
+    struct class_assoc_member<Class const, Key>
+    {
+        typedef typename
+            add_const<typename class_assoc_member<Class, Key>::type>::type
+        type;
+
+        static type&
+        call(Class const& class_)
+        {
+            return class_assoc_member<Class, Key>::call(
+                const_cast<Class&>(class_));
+        }
+    };
+
+}}}
+
+#endif
+
+