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package ilog.language.design.base;

/**
 * @version     Last modified on Thu Apr 04 09:49:40 2002 by hak
 * @author      <a href="mailto:hak@ilog.fr">Hassan A&iuml;t-Kaci</a>
 * @copyright   &copy; 2000-2002 <a href="http://www.ilog.fr/">ILOG, S.A.</a>
 */

/**
 * This is the class of instructions getting an int field value
 * from the object currently on the runtime's object stack.
 */

import ilog.language.design.types.DefinedEntry;
import ilog.language.design.backend.Runtime;
import ilog.language.design.backend.ObjectInstance;
import ilog.language.design.backend.NullValueException;

public class GetIntField extends FieldInstruction
{
  public GetIntField (DefinedEntry codeEntry)
    {
      super(codeEntry);
      setName("GET_FIELD_I");
    }

  public void execute (Runtime r) throws NullValueException
    {
      checkForNull(r,"access");      
      r.pushInt(((ObjectInstance)r.popObject()).getIntField(offset()));
      r.incIP();
    }
}