BNFStepper.h

/* "CodeWorker":	a scripting language for parsing and generating text.

Copyright (C) 1996-1997, 1999-2002 Cédric Lemaire

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

To contact the author: codeworker@free.fr
*/

#ifndef _BNFStepper_h_
#define _BNFStepper_h_

#include "GrfBlock.h"

namespace CodeWorker {
	class DtaBNFScript;
	class BNFClause;
	class ExprScriptVariable;

	class BNFStepper : public GrfBlock {
		protected:
			DtaBNFScript* _pBNFScript;
			ExprScriptVariable* _pVariableToAssign;
			bool _bConcatVariable;
			std::vector<std::string> _listOfConstants;
			int _iClauseReturnType;
			bool _bContinue;
			int _iStepLocation;

		public:
			BNFStepper(DtaBNFScript* pBNFScript, GrfBlock* pParent, bool bContinue);
			virtual ~BNFStepper();

		virtual void accept(DtaVisitor& visitor, DtaVisitorEnvironment& env);

			virtual bool isABNFCommand() const;

			void setVariableToAssign(ExprScriptVariable* pVariableToAssign, bool bConcat, BNFClause& theClause);
			inline void setConstantsToMatch(const std::vector<std::string>& listOfConstants) { _listOfConstants = listOfConstants; }

			inline int getStepLocation() const { return _iStepLocation; }
			inline void setStepLocation(int iLocation) { _iStepLocation = iLocation; }
	};
}

#endif