eobitopfactory.h

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// eoBitOpFactory.h
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

//-----------------------------------------------------------------------------
// eoOpFactory.h
// (c) GeNeura Team, 1998
/* 
    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 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

    Contact: [e-mail], http://geneura.ugr.es
 */
//-----------------------------------------------------------------------------

#ifndef _EOBITOPFACTORY_H
#define _EOBITOPFACTORY_H

#include <eoFactory.h>
#include <ga/eoBitOp.h>

//-----------------------------------------------------------------------------

/** EO Factory. An instance of the factory class to create operators that act
on bitstring chromosomes. Only those chromosomes can instantiate the operators
that are created here
@see eoSelect*/
template< class EOT>
class eoBitOpFactory: public eoFactory<EOT>  
{
	
public:
	
	/// @name ctors and dtors
	//{@
	/// constructor
	eoBitOpFactory( ) {};
	
	/// destructor
	virtual ~eoBitOpFactory() {};
	//@}

	/** Another factory method: creates an object from an std::istream, reading from
	it whatever is needed to create the object. Usually, the format for the std::istream will be\\
	objectType parameter1 parameter2 ... parametern\\
	If there are problems, an std::exception is raised; it should be caught at the
	upper level, because it might be something for that level\\
	At the same time, it catches std::exceptions thrown at a lower level, which will
	indicate that whatever is in the stream is for this method to process
	@param _is an stream from where a single line will be read
	@throw runtime_std::exception if the object type is not known
	*/
	virtual eoOp<EOT>* make(std::istream& _is) 
    {
		eoOp<EOT> * opPtr = NULL;
		try {
			opPtr = eoFactory<EOT>::make( _is );
		} catch ( const std::string& objectTypeStr ) {
			if ( objectTypeStr == "eoBinBitFlip" ) {
				opPtr = new eoOneBitFlip<EOT>( );
			} 
			// handles old operator names as well as new ones
			if ( objectTypeStr == "eoOneBitFlip" ) {
				opPtr = new eoOneBitFlip<EOT>( );
			} 

			// Standard BitFilp Mutation
			if ( objectTypeStr == "eoBinMutation" ) {
				float rate;
				_is >> rate;
				opPtr = new eoBitMutation<EOT>( rate );
			} 
			if ( objectTypeStr == "eoBitMutation" ) {
				float rate;
				_is >> rate;
				opPtr = new eoBitMutation<EOT>( rate );
			} 

			// Bit inversion
			if ( objectTypeStr == "eoBinInversion" ) {
				opPtr = new eoBitInversion<EOT>( );
			}
			if ( objectTypeStr == "eoBitInversion" ) {
				opPtr = new eoBitInversion<EOT>( );
			}

			// Next binary value
			if ( objectTypeStr == "eoBinNext" ) {
				opPtr = new eoBitNext<EOT>( );
			}
			if ( objectTypeStr == "eoBitNext" ) {
				opPtr = new eoBitNext<EOT>( );
			}

			// Previous binary value
			if ( objectTypeStr == "eoBinPrev" ) {
				opPtr = new eoBitPrev<EOT>( );
			}
			if ( objectTypeStr == "eoBitPrev" ) {
				opPtr = new eoBitPrev<EOT>( );
			}

			// 1 point Xover
			if ( objectTypeStr == "eoBinCrossover" ) {
				opPtr = new eo1PtBitXover<EOT>( );
			}
			if ( objectTypeStr == "eo1PtBitXover" ) {
				opPtr = new eo1PtBitXover<EOT>( );
			}

			// Npts Xover
			if ( objectTypeStr == "eoBinNxOver" ) {
				unsigned nPoints;
				_is >> nPoints;
				opPtr = new eoNPtsBitXover<EOT>( nPoints );
			}
			if ( objectTypeStr == "eoNPtsBitXover" ) {
				unsigned nPoints;
				_is >> nPoints;
				opPtr = new eoNPtsBitXover<EOT>( nPoints );
			}

			// Gene Xover (obsolete)
			if ( objectTypeStr == "eoBinGxOver" ) {
				unsigned geneSize, nPoints;
				_is >> geneSize >> nPoints;
				opPtr = new eoBitGxOver<EOT>( geneSize, nPoints );
			}
			if ( objectTypeStr == "eoBitGxOver" ) {
				unsigned geneSize, nPoints;
				_is >> geneSize >> nPoints;
				opPtr = new eoBitGxOver<EOT>( geneSize, nPoints );
			}

			// Uniform Xover
			if ( objectTypeStr == "eoBinUxOver" ) {
				float rate;
				_is >> rate;
				opPtr = new eoUBitXover<EOT>( rate );
			}
			if ( objectTypeStr == "eoUBitXover" ) {
				float rate;
				_is >> rate;
				opPtr = new eoUBitXover<EOT>( rate );
			}

			// nothing read!
			if ( !opPtr ) {	// to be caught by the upper level
				throw objectTypeStr;
			}
		}
		return opPtr;
	};


};


#endif