| /*============================================================================= |
| Copyright (c) 2001-2007 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_STRUCT_EXTENSION_APRIL_2_2007_1008AM) |
| #define FUSION_STRUCT_EXTENSION_APRIL_2_2007_1008AM |
| |
| #include <boost/type_traits/add_const.hpp> |
| |
| namespace boost { namespace fusion { namespace extension |
| { |
| template <typename Struct, int N> |
| struct struct_member; |
| |
| template <typename Struct> |
| struct struct_size; |
| |
| template <typename Struct, int N> |
| struct struct_member<Struct const, N> |
| { |
| typedef typename |
| add_const<typename struct_member<Struct, N>::type>::type |
| type; |
| |
| static type& |
| call(Struct const& struct_) |
| { |
| return struct_member<Struct, N>::call( |
| const_cast<Struct&>(struct_)); |
| } |
| }; |
| |
| template <typename Struct> |
| struct struct_size<Struct const> |
| : struct_size<Struct> |
| {}; |
| |
| struct no_such_member; |
| |
| template<typename Struct, typename Key> |
| struct struct_assoc_member |
| { |
| typedef no_such_member type; |
| }; |
| |
| template<typename Struct, typename Key> |
| struct struct_assoc_member<Struct const, Key> |
| { |
| typedef typename |
| add_const<typename struct_assoc_member<Struct, Key>::type>::type |
| type; |
| |
| static type& |
| call(Struct const& struct_) |
| { |
| return struct_assoc_member<Struct, Key>::call( |
| const_cast<Struct&>(struct_)); |
| } |
| }; |
| |
| }}} |
| |
| #endif |
| |
| |