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File org.dgpf.gp.vm.instructions.arith.ModuloHandler.java

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/*
 * Copyright (c) 2006 Thomas Weise
 * 
 * E-Mail           : tweise@gmx.de
 * Creation Date    : 2006-07-03 07:02:36
 * Original Filename: org.dgpf.gp.vm.instructions.arith.ModuloHandler.java
 * Version          : 1.0.0
 * Last modification: 2006-07-03
 *                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.vm.instructions.arith;

import org.dgpf.gp.vm.base.IInstructionHandler;
import org.dgpf.gp.vm.base.Instruction;
import org.dgpf.gp.vm.base.VMContext;
import org.dgpf.gp.vm.instructions.base.MemInstr3Handler;
import org.dgpf.gp.vm.mutation.MutationInfo;

/**
 * The instruction handler for the modulo instruction.
 *
 * @author Thomas Weise
 */

public final  class ModuloHandler  extends MemInstr3Handler
  {
/**
 * The serial version uid.
 */

  private static final long serialVersionUID = 1;
/**
 * The globally shared instance of the modulo handler.
 */

  public  static  final IInstructionHandler  INSTANCE = new ModuloHandler();
  
/**
 * Create a new modulo handler - you cannot do this, use the shared instance.
 * @see #INSTANCE
 */

  private ModuloHandler()
    {
    super(null);
    }
  

/**
 * Create a new randomized instance of this instruction.
 * @param p_context The vm context to be used.
 * @param p_info    The information record holding the infos on the
 *                  instruction to be created.
 * @return  The new instruction instance.
 */

  public  final Instruction create      (final VMContext    p_context,
                                         final MutationInfo p_info)
    {
    Addresses l_a;
    
    l_a = new Addresses(3, p_context, p_info);
    
    return new Modulo(l_a.m_addr[0], l_a.m_rel[0],
                      l_a.m_addr[1], l_a.m_rel[1],
                      l_a.m_addr[2], l_a.m_rel[2]);
    }
  
  
/**
 * Get an instruction that better represents the passed in instruction.
 * @param p_i   The instruction to replace.
 * @return  An instruction that better represents <code>p_i</code>, or
 *          <code>p_i</code> if it is already perfect, or <code>null</code>
 *          if <code>p_i</code> itself is totally useless.
 */

  @Override
  public Instruction get_replacement (final Instruction p_i)
    {
    Modulo l_s;
    
    l_s = ((Modulo)p_i);
    
    if((l_s.get_addr_2() == l_s.get_addr_3()) &&
       (l_s.is_relative_2() == l_s.is_relative_3()))
      {
      return new LoadC(l_s.get_addr_1(), l_s.is_relative_1(), 0);
      }
    
    return p_i;
    }
  }

File Information:

file name:ModuloHandler.java
package:org.dgpf.gp.vm.instructions.arith
qualified name:org.dgpf.gp.vm.instructions.arith.ModuloHandler.java
file type:Java Source File
download location:download http://dgpf.sourceforge.net/source/org/dgpf/gp/vm/instructions/arith/ModuloHandler.java
size:3.280 KB (3359 B)
uploaded: 2015-07-22 04:10:58 GMT+0000
last update: 2006-07-16 06:45:15 GMT+0000
last access: 2017-11-17 21:18:59 GMT+0000

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