Method setLevel

src/tree/TreeRule.java:731–739

@param level The top level processing order. Must be 0 or greater @throws IllegalArgumentException if the level was negative

(int level)

  /** @param level The top level processing order. Must be 0 or greater 
   * @throws IllegalArgumentException if the level was negative */
  public void setLevel(int level) {
    if (level < 0) {
      throw new IllegalArgumentException("Negative levels are not allowed");
    }
    if (this.level != level) {
      changed.put("level", true);
      this.level = level;
    }
  }

  /** @param order The order of processing within a level. 
   * Must be 0 or greater