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File org.dgpf.gp.automaton.base.Instruction.java

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/*
 * Copyright (c) 2005 Thomas Weise
 * 
 * E-Mail           : tweise@gmx.de
 * Creation Date    : 2005-12-28 09:47:24
 * Original Filename: org.dgpf.automaton.base.Instruction.java
 * Version          : 2.2.1
 * Last modification: 2006-05-08
 *                by: Thomas Weise
 * 
 * License          : GNU LESSER GENERAL PUBLIC LICENSE
 *                    Version 2.1, February 1999
 *                    You should have received a copy of this license along
 *                    with this library; if not, write to the Free Software
 *                    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *                    MA 02111-1307, USA or download the license under
 *                    http://www.gnu.org/copyleft/lesser.html.
 *                    
 * Warranty         : This software is provided "as is" 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.
 */

 
package org.dgpf.gp.automaton.base;

import org.dgpf.gp.automaton.search.InstructionHandler;


/**
 * The base class of all instructions, defining some useful prototypes.
 *
 * @author Thomas Weise
 */

public abstract class   Instruction
                extends Construct<InstructionHandler<Instruction>>
  {  
/**
 * The serial version uid.
 */

  private static  final long            serialVersionUID  = 1;
  
  
/**
 * Create a new instruction that requires some processor time.
 * @param p_ticks The ticks required for the instruction .
 */

  protected Instruction(final int p_ticks)
    {
    super(p_ticks);
    }
  
/**
 * This method is called when the instruction is executed. It performs the
 * work of the instruction.
 * @param p_automate    The automate it is invoked on.
 * @return  This method must return always <code>-1</code>.
 */

  @Override
  protected abstract  int   execute (final Automaton p_automate) ;
  
/**
 * Checks wether this instruction is practically useless.
 * @param p_position          The position this instruction can be found at.
 * @return  <code>true</code> if and only if leaving this instruction away
 *          will not change the program's functionality.
 * @see org.dgpf.gp.automaton.search.InstructionHandler#is_useless(Instruction, int)
 */

  public    final  boolean is_useless  (final int p_position)
    {
    return this.get_handler().is_useless(this, p_position);
    }
  
/**
 * Returns an optimized version of this instruction.
 * @return An optimized version of this instruction.
 * @see org.dgpf.gp.automaton.search.InstructionHandler#optimize(Instruction)
 */

  public  final Instruction  optimize  ()
    {
    return this.get_handler().optimize(this);
    }
  }

File Information:

file name:Instruction.java
package:org.dgpf.gp.automaton.base
qualified name:org.dgpf.gp.automaton.base.Instruction.java
file type:Java Source File
download location:download http://dgpf.sourceforge.net/source/org/dgpf/gp/automaton/base/Instruction.java
size:2.834 KB (2903 B)
uploaded: 2015-07-22 04:10:55 GMT+0000
last update: 2006-05-08 13:38:45 GMT+0000
last access: 2017-11-20 02:13:46 GMT+0000

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