Imported Upstream version 1.51.0upstream/1.51.0

1 files changed, 33 insertions, 0 deletions

diff --git a/boost/local_function/aux_/add_pointed_const.hpp b/boost/local_function/aux_/add_pointed_const.hpp
new file mode 100644
index 0000000000..9cd7aa6375
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+++ b/boost/local_function/aux_/add_pointed_const.hpp
@@ -0,0 +1,33 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/local_function
+
+#ifndef BOOST_LOCAL_FUNCTION_AUX_ADD_POINTED_CONST_HPP_
+#define BOOST_LOCAL_FUNCTION_AUX_ADD_POINTED_CONST_HPP_
+
+namespace boost { namespace local_function { namespace aux {
+
+// Metafunction to add const to pointed type `T` (i.e. converts
+// `T* [const]` to `T const* [const]`). `boost::add_const<>` cannot be used 
+// instead because only adds outer const.
+
+template<typename T> struct add_pointed_const { typedef T type; };
+
+template<typename T> struct add_pointed_const<T*> { typedef T const* type; };
+
+template<typename T> struct add_pointed_const<T const*>
+    { typedef T const* type; };
+
+template<typename T> struct add_pointed_const<T* const>
+    { typedef T const* const type; };
+
+template<typename T> struct add_pointed_const<T const* const>
+    { typedef T const* const type; };
+
+} } } // namespace
+
+#endif //#include guard
+