Orocos Real-Time Toolkit
2.6.0
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00001 /*************************************************************************** 00002 tag: The SourceWorks Tue Sep 7 00:55:18 CEST 2010 ConditionCache.hpp 00003 00004 ConditionCache.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, * 00034 * Suite 330, Boston, MA 02111-1307 USA * 00035 * * 00036 ***************************************************************************/ 00037 00038 00039 #ifndef CONDITION_CACHE_HPP 00040 #define CONDITION_CACHE_HPP 00041 00042 #include "ConditionInterface.hpp" 00043 #include "../internal/DataSources.hpp" 00044 00045 namespace RTT 00046 { namespace scripting { 00047 00048 00054 class RTT_SCRIPTING_API ConditionCache 00055 : public ConditionInterface 00056 { 00057 boost::shared_ptr<ConditionInterface> mc; 00058 internal::AssignableDataSource<bool>::shared_ptr result; 00059 public: 00060 ConditionCache( ConditionInterface* c, internal::AssignableDataSource<bool>::shared_ptr ds = internal::AssignableDataSource<bool>::shared_ptr() ) 00061 : mc(c), result( ds ? ds : new internal::ValueDataSource<bool>(false) ) 00062 { 00063 } 00064 00065 virtual ~ConditionCache() 00066 { 00067 } 00068 00069 virtual bool evaluate() 00070 { 00071 result->set( mc->evaluate() ); 00072 return result->value(); 00073 } 00074 00075 virtual void reset() { 00076 result->set( false ); 00077 } 00078 00079 internal::DataSource<bool>::shared_ptr getResult() { return result; } 00080 00081 virtual ConditionInterface* copy( std::map<const base::DataSourceBase*, base::DataSourceBase*>& alreadyCloned ) const 00082 { 00083 return new ConditionCache( mc->copy(alreadyCloned), result->copy(alreadyCloned) ); 00084 } 00085 00089 virtual ConditionInterface* clone() const 00090 { 00091 return new ConditionCache( mc->clone(), result ); 00092 } 00093 }; 00094 }} 00095 00096 #endif