#ifndef __OPERAND_DISTRIBUTION_HPP_
#define __OPERAND_DISTRIBUTION_HPP_

/* "Species" - a CoreWars evolver.  Copyright (C) 2003 'Varfar' 
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 1, or (at your option) any later
 * version. 
 *
 * This program 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 General Public License for
 * more details. 
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 675 Mass Ave, Cambridge, MA 02139, USA. 
 */
 
/* to implement a generator:
 * 1) derive publically from COperand
 * 1) give it an identifier in the EImpl enumeration
 * 2) make the constructor set the _type member
 * 3) make COperand factories understand this new implementation and how to identify it
 * 4) implement the read_ini/write_ini functionality
 */
 
#include "operand.hpp"
#include "distribution.hpp"

class COperandDistribution: public COperand, protected CDistribution {
	public:
		COperandDistribution(const field_t coresize); /* constructor creates default values */
		// actual query point
		virtual void rnd(insn_t &instruction,const Field field);
		// and saving
		virtual void write_ini(std::ostream &os);
		virtual void write_override_ini(std::ostream &os,const COperand *parent);
	protected:
		// from COperand
		virtual void read_ini_impl(INIFile &ini);
		virtual COperand *read_override_ini_impl(INIFile &ini); /* loads freq values; if any freq values are
			specified, then a copy of this freq will be made; all unspecified values in the new
			class will be "inherited" from this one, and any specified values will be overriden.  If nothing
			is specified, then this will be returned */
	private:
		COperandDistribution(const CDistribution &copy);
		static CDistribution *ImplFactory(const CDistribution &copy);
};

#endif // ifndef __OPERAND_DISTRIBUTION_HPP_