content: 
  package java_cup;
  
  /** This class represents a reduce action within the parse table. 
   *  The action simply stores the production that it reduces with and 
   *  responds to queries about its type.
   *
   * @version last updated: 11/25/95
   * @author  Scott Hudson
   */
  public class reduce_action extends parse_action {
   
    /*-----------------------------------------------------------*/
    /*--- Constructor(s) ----------------------------------------*/
    /*-----------------------------------------------------------*/
  
    /** Simple constructor. 
     * @param prod the production this action reduces with.
     */
    public reduce_action(production prod ) throws internal_error
      {
        /* sanity check */
        if (prod == null)
  	throw new internal_error(
  	  "Attempt to create a reduce_action with a null production");
  
        _reduce_with = prod;
      }
  
    /*-----------------------------------------------------------*/
    /*--- (Access to) Instance Variables ------------------------*/
    /*-----------------------------------------------------------*/
    
    /** The production we reduce with. */
    protected production _reduce_with;
  
    /** The production we reduce with. */
    public production reduce_with() {return _reduce_with;}
  
    /*-----------------------------------------------------------*/
    /*--- General Methods ---------------------------------------*/
    /*-----------------------------------------------------------*/
  
    /** Quick access to type of action. */
    public int kind() {return REDUCE;}
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Equality test. */
    public boolean equals(reduce_action other)
      {
        return other != null && other.reduce_with() == reduce_with();
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Generic equality test. */
    public boolean equals(Object other)
      {
        if (other instanceof reduce_action)
  	return equals((reduce_action)other);
        else
         return false;
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Compute a hash code. */
    public int hashCode()
      {
        /* use the hash code of the production we are reducing with */
        return reduce_with().hashCode();
      }
  
  
    /** Convert to string. */
    public String toString() 
      {
        return "REDUCE(with prod " + reduce_with().index() + ")";
      }
  
    /*-----------------------------------------------------------*/
  
  }
  