UnMember.hpp

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/***************************************************************************
  tag: FMTC  do nov 2 13:06:07 CET 2006  UnMember.hpp

                        UnMember.hpp -  description
                           -------------------
    begin                : do november 02 2006
    copyright            : (C) 2006 FMTC
    email                : peter.soetens@fmtc.be

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU General Public                   *
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 *   version 2 of the License.                                             *
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 *   software library without restriction.  Specifically, if other files   *
 *   instantiate templates or use macros or inline functions from this     *
 *   file, or you compile this file and link it with other files to        *
 *   produce an executable, this file does not by itself cause the         *
 *   resulting executable to be covered by the GNU General Public          *
 *   License.  This exception does not however invalidate any other        *
 *   reasons why the executable file might be covered by the GNU General   *
 *   Public License.                                                       *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
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#ifndef ORO_UN_MEMBER_HPP
#define ORO_UN_MEMBER_HPP

#include <boost/shared_ptr.hpp>
#include <boost/mpl/erase.hpp>
#include <boost/mpl/insert.hpp>
#include <boost/mpl/begin_end.hpp>
#include <boost/mpl/next_prior.hpp>
#include <boost/mpl/vector.hpp>
#include <boost/mpl/back.hpp>
#include <boost/mpl/int.hpp>
#include <boost/type_traits.hpp>
#include <boost/function_types/function_type.hpp>
#include <boost/function_types/components.hpp>
#include <boost/function_types/member_function_pointer.hpp>

namespace RTT
{
    namespace internal
    {
        template<class F>
        class UnMember
        {
            typedef boost::function_types::components<F> member_signature;
            typedef typename boost::mpl::erase<typename member_signature::types,
                                               typename boost::mpl::next<typename boost::mpl::begin<member_signature>::type>::type>::type non_member_signature;
        public:
            typedef typename boost::function_types::function_type<non_member_signature>::type type;
        };

        template<class F,class Class>
        class AddMember
        {
            typedef boost::function_types::components<F> non_member_signature;
            typedef typename boost::mpl::insert<non_member_signature,
                                               typename boost::mpl::next<typename boost::mpl::begin<non_member_signature>::type>::type,
                                               Class>::type with_member_signature;
        public:
            typedef typename boost::function_types::member_function_pointer<with_member_signature>::type type;
        };

        template<class F>
        class ArgMember
        {
            typedef boost::function_types::components<F> member_signature;
            // TODO this erase/insert cycle can be removed and just use member_signature in function_type<T>
            // remove the class from the arg list:
            typedef typename boost::mpl::erase<typename member_signature::types,
                                               typename boost::mpl::next<typename boost::mpl::begin<member_signature>::type>::type>::type non_member_signature;
            typedef typename boost::shared_ptr<typename boost::remove_const<typename boost::remove_reference<typename boost::mpl::at<typename member_signature::types,boost::mpl::int_<1> >::type>::type>::type> object_pointer;
            // insert it as first argument.
            typedef typename boost::mpl::insert<non_member_signature,
                                                typename boost::mpl::next<typename boost::mpl::begin<non_member_signature>::type>::type,
                                                object_pointer
//                                                typename boost::add_pointer<typename boost::remove_const<typename boost::mpl::at<typename member_signature::types,boost::mpl::int_<1> >::type>::type>::type
//                                                typename boost::add_pointer<typename boost::mpl::at<typename member_signature::types,boost::mpl::int_<1> >::type>::type
                                               >::type arg_signature;
        public:
            typedef typename boost::function_types::function_type<arg_signature>::type type;
        };

        template<class F>
        class UnPointer
        {
            typedef boost::function_types::components<F> signature;
        public:
            typedef typename boost::function_types::function_type<signature>::type type;
        };
    }
}


#endif