1 files changed, 43 insertions, 0 deletions
diff --git a/boost/python/copy_const_reference.hpp b/boost/python/copy_const_reference.hpp
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+++ b/boost/python/copy_const_reference.hpp
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+// Copyright David Abrahams 2002.
+// 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 COPY_CONST_REFERENCE_DWA2002131_HPP
+# define COPY_CONST_REFERENCE_DWA2002131_HPP
+
+# include <boost/python/detail/prefix.hpp>
+# include <boost/python/detail/indirect_traits.hpp>
+# include <boost/mpl/if.hpp>
+# include <boost/python/to_python_value.hpp>
+
+namespace boost { namespace python { 
+
+namespace detail
+{
+  template <class R>
+  struct copy_const_reference_expects_a_const_reference_return_type
+# if defined(__GNUC__) && __GNUC__ >= 3 || defined(__EDG__)
+  {}
+# endif
+  ;
+}
+
+template <class T> struct to_python_value;
+
+struct copy_const_reference
+{
+    template <class T>
+    struct apply
+    {
+        typedef typename mpl::if_c<
+            indirect_traits::is_reference_to_const<T>::value
+          , to_python_value<T>
+          , detail::copy_const_reference_expects_a_const_reference_return_type<T>
+        >::type type;
+    };
+};
+
+
+}} // namespace boost::python
+
+#endif // COPY_CONST_REFERENCE_DWA2002131_HPP