rtt: ReturnBase.hpp Source File

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00001 /***************************************************************************
00002   tag: The SourceWorks  Tue Sep 7 00:55:18 CEST 2010  ReturnBase.hpp
00003 
00004                         ReturnBase.hpp -  description
00005                            -------------------
00006     begin                : Tue September 07 2010
00007     copyright            : (C) 2010 The SourceWorks
00008     email                : peter@thesourceworks.com
00009 
00010  ***************************************************************************
00011  *   This library is free software; you can redistribute it and/or         *
00012  *   modify it under the terms of the GNU General Public                   *
00013  *   License as published by the Free Software Foundation;                 *
00014  *   version 2 of the License.                                             *
00015  *                                                                         *
00016  *   As a special exception, you may use this file as part of a free       *
00017  *   software library without restriction.  Specifically, if other files   *
00018  *   instantiate templates or use macros or inline functions from this     *
00019  *   file, or you compile this file and link it with other files to        *
00020  *   produce an executable, this file does not by itself cause the         *
00021  *   resulting executable to be covered by the GNU General Public          *
00022  *   License.  This exception does not however invalidate any other        *
00023  *   reasons why the executable file might be covered by the GNU General   *
00024  *   Public License.                                                       *
00025  *                                                                         *
00026  *   This library is distributed in the hope that it will be useful,       *
00027  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00028  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00029  *   Lesser General Public License for more details.                       *
00030  *                                                                         *
00031  *   You should have received a copy of the GNU General Public             *
00032  *   License along with this library; if not, write to the Free Software   *
00033  *   Foundation, Inc., 59 Temple Place,                                    *
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00035  *                                                                         *
00036  ***************************************************************************/
00037 
00038 
00039 #ifndef ORO_RETURN_BASE_HPP
00040 #define ORO_RETURN_BASE_HPP
00041 
00042 #include <boost/type_traits.hpp>
00043 
00044 namespace RTT
00045 {
00046     namespace internal
00047     {
00052         template<int, class F>
00053         struct ReturnBaseImpl;
00054 
00059         template<class F>
00060         struct ReturnBase
00061             : public ReturnBaseImpl<boost::function_traits<F>::arity, F>
00062         {};
00063 
00064 
00065         template<class F>
00066         struct ReturnBaseImpl<0,F>
00067         {
00068             typedef typename boost::function_traits<F>::result_type result_type;
00069             virtual ~ReturnBaseImpl() {}
00070 
00071             virtual result_type ret() = 0;
00072         };
00073 
00074         template<class F>
00075         struct ReturnBaseImpl<1,F>
00076         {
00077             typedef typename boost::function_traits<F>::result_type result_type;
00078             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00079             virtual ~ReturnBaseImpl() {}
00080 
00081             virtual result_type ret(arg1_type a1) = 0;
00082             virtual result_type ret() = 0;
00083         };
00084 
00085         template<class F>
00086         struct ReturnBaseImpl<2,F>
00087         {
00088             typedef typename boost::function_traits<F>::result_type result_type;
00089             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00090             typedef typename boost::function_traits<F>::arg2_type arg2_type;
00091             virtual ~ReturnBaseImpl() {}
00092 
00093             virtual result_type ret(arg1_type a1, arg2_type a2) = 0;
00094             virtual result_type ret() = 0;
00095         };
00096 
00097         template<class F>
00098         struct ReturnBaseImpl<3,F>
00099         {
00100             typedef typename boost::function_traits<F>::result_type result_type;
00101             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00102             typedef typename boost::function_traits<F>::arg2_type arg2_type;
00103             typedef typename boost::function_traits<F>::arg3_type arg3_type;
00104             virtual ~ReturnBaseImpl() {}
00105 
00106             virtual result_type ret(arg1_type a1, arg2_type a2, arg3_type a3) = 0;
00107             virtual result_type ret() = 0;
00108         };
00109 
00110         template<class F>
00111         struct ReturnBaseImpl<4,F>
00112         {
00113             typedef typename boost::function_traits<F>::result_type result_type;
00114             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00115             typedef typename boost::function_traits<F>::arg2_type arg2_type;
00116             typedef typename boost::function_traits<F>::arg3_type arg3_type;
00117             typedef typename boost::function_traits<F>::arg4_type arg4_type;
00118             virtual ~ReturnBaseImpl() {}
00119 
00120             virtual result_type ret(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4) = 0;
00121             virtual result_type ret() = 0;
00122         };
00123 
00124         template<class F>
00125         struct ReturnBaseImpl<5,F>
00126         {
00127             typedef typename boost::function_traits<F>::result_type result_type;
00128             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00129             typedef typename boost::function_traits<F>::arg2_type arg2_type;
00130             typedef typename boost::function_traits<F>::arg3_type arg3_type;
00131             typedef typename boost::function_traits<F>::arg4_type arg4_type;
00132             typedef typename boost::function_traits<F>::arg5_type arg5_type;
00133             virtual ~ReturnBaseImpl() {}
00134 
00135             virtual result_type ret(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4, arg5_type a5) = 0;
00136             virtual result_type ret() = 0;
00137         };
00138 
00139         template<class F>
00140         struct ReturnBaseImpl<6,F>
00141         {
00142             typedef typename boost::function_traits<F>::result_type result_type;
00143             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00144             typedef typename boost::function_traits<F>::arg2_type arg2_type;
00145             typedef typename boost::function_traits<F>::arg3_type arg3_type;
00146             typedef typename boost::function_traits<F>::arg4_type arg4_type;
00147             typedef typename boost::function_traits<F>::arg5_type arg5_type;
00148             typedef typename boost::function_traits<F>::arg6_type arg6_type;
00149             virtual ~ReturnBaseImpl() {}
00150 
00151             virtual result_type ret(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4, arg5_type a5, arg6_type a6) = 0;
00152             virtual result_type ret() = 0;
00153         };
00154 
00155         template<class F>
00156         struct ReturnBaseImpl<7,F>
00157         {
00158             typedef typename boost::function_traits<F>::result_type result_type;
00159             typedef typename boost::function_traits<F>::arg1_type arg1_type;
00160             typedef typename boost::function_traits<F>::arg2_type arg2_type;
00161             typedef typename boost::function_traits<F>::arg3_type arg3_type;
00162             typedef typename boost::function_traits<F>::arg4_type arg4_type;
00163             typedef typename boost::function_traits<F>::arg5_type arg5_type;
00164             typedef typename boost::function_traits<F>::arg6_type arg6_type;
00165             typedef typename boost::function_traits<F>::arg7_type arg7_type;
00166             virtual ~ReturnBaseImpl() {}
00167 
00168             virtual result_type ret(arg1_type a1, arg2_type a2, arg3_type a3, arg4_type a4, arg5_type a5, arg6_type a6, arg7_type a7) = 0;
00169             virtual result_type ret() = 0;
00170         };
00171     }
00172 }
00173 #endif