Orocos Real-Time Toolkit  2.6.0
ConditionParser.hpp
00001 /***************************************************************************
00002   tag: Peter Soetens  Mon Jan 19 14:11:25 CET 2004  ConditionParser.hpp
00003 
00004                         ConditionParser.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             *
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00033  *   Foundation, Inc., 59 Temple Place,                                    *
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00035  *                                                                         *
00036  ***************************************************************************/
00037 
00038 #ifndef CONDITIONPARSER_HPP
00039 #define CONDITIONPARSER_HPP
00040 
00041 #include "parser-types.hpp"
00042 #include "CommonParser.hpp"
00043 #include "ExpressionParser.hpp"
00044 #include "../internal/DataSource.hpp"
00045 
00046 #include <memory>
00047 #include <stack>
00048 #include <utility>
00049 
00050 #ifdef ORO_PRAGMA_INTERFACE
00051 #pragma interface
00052 #endif
00053 
00054 namespace RTT { namespace scripting
00055 {
00061   class ConditionParser
00062   {
00063       internal::DataSource<bool>::shared_ptr ds_bool;
00064 
00065     void seendonecondition();
00066     void seenexpression();
00067 
00068     rule_t condition;
00069 
00070     TaskContext* context;
00071     CommonParser& commonparser;
00072     ExpressionParser expressionparser;
00073 
00074   public:
00075       ConditionParser( TaskContext* context, ExecutionEngine* caller, CommonParser& cp );
00076     ~ConditionParser();
00077 
00078     rule_t& parser()
00079       {
00080         return condition;
00081       };
00082 
00088       ConditionInterface* getParseResult();
00089 
00093       std::pair<base::ActionInterface*,ConditionInterface*> getParseResultAsCommand();
00094 
00095     void reset();
00096   };
00097 }}
00098 
00099 #endif