ConditionCompare.hpp

00001 /***************************************************************************
00002   tag: Peter Soetens  Mon Jan 19 14:11:21 CET 2004  ConditionCompare.hpp
00003 
00004                         ConditionCompare.hpp -  description
00005                            -------------------
00006     begin                : Mon January 19 2004
00007     copyright            : (C) 2004 Peter Soetens
00008     email                : peter.soetens@mech.kuleuven.ac.be
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,                                    *
00034  *   Suite 330, Boston, MA  02111-1307  USA                                *
00035  *                                                                         *
00036  ***************************************************************************/
00037 
00038 #ifndef CONDITIONCOMPARE_HPP
00039 #define CONDITIONCOMPARE_HPP
00040 
00041 #include "ConditionInterface.hpp"
00042 #include <typeinfo>
00043 
00044 #include "DataSource.hpp"
00045 
00046 namespace RTT
00047 {
00048 
00058   template<typename T, typename compare_op>
00059   class ConditionCompare
00060     : public ConditionInterface
00061   {
00062     typename DataSource<T>::shared_ptr mdata1;
00063     typename DataSource<T>::shared_ptr mdata2;
00064   public:
00065     ConditionCompare( DataSource<T>* data1, DataSource<T>* data2 )
00066       : mdata1( data1 ), mdata2( data2 )
00067       {
00068       }
00069 
00070     bool evaluate();
00071     ConditionInterface* copy() const
00072       {
00073         return new ConditionCompare<T, compare_op>(
00074           mdata1.get(), mdata2.get() );
00075       };
00076     std::string toString()
00077       {
00078         return std::string( "compare<" ) + typeid( T ).name() +
00079           ", " + typeid( compare_op ).name() + ">";
00080       };
00081   };
00082 
00083   template<typename T, typename compare_op>
00084   bool ConditionCompare<T, compare_op>::evaluate()
00085   {
00086     compare_op op;
00087     return op( mdata1->get(), mdata2->get() );
00088   };
00089 }
00090 
00091 #endif
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