
package java_cup;

/**
 * This class represents a shift/reduce nonassociative error within the parse
 * table. If action_table element is assign to type nonassoc_action, it cannot
 * be changed, and signifies that there is a conflict between shifting and
 * reducing a production and a terminal that shouldn't be next to each other.
 *
 * @version last updated: 7/2/96
 * @author Frank Flannery
 */
public class nonassoc_action extends parse_action {

  /*-----------------------------------------------------------*/
  /*--- Constructor(s) ----------------------------------------*/
  /*-----------------------------------------------------------*/

  /**
   * Simple constructor.
   */
  public nonassoc_action() throws internal_error {
    /* don't need to set anything, since it signifies error */
  }

  /*-----------------------------------------------------------*/
  /*--- General Methods ---------------------------------------*/
  /*-----------------------------------------------------------*/

  /** Quick access to type of action. */
  public int kind() {
    return NONASSOC;
  }

  /* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */

  /** Equality test. */
  public boolean equals(parse_action other) {
    return other != null && other.kind() == NONASSOC;
  }

  /* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */

  /** Generic equality test. */
  @Override
  public boolean equals(Object other) {
    if (other instanceof parse_action)
      return equals((parse_action) other);
    else
      return false;
  }

  /* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */

  /** Compute a hash code. */
  @Override
  public int hashCode() {
    /* all objects of this class hash together */
    return 0xCafe321;
  }

  @Override
  /** Convert to string. */
  public String toString() {
    return "NONASSOC";
  }

  /*-----------------------------------------------------------*/

}
