repeatcommandnode.java~2~

《深入浅出设计模式》的完整源代码

package littlecompiler;

public class RepeatCommandNode implements Node {
  private int number;
  private Node commandListNode;

  public void parse (Context context) {
    context.skipToken ("REPEAT");
    number = context.currentNumber ();
    context.nextToken ();
    commandListNode = new CommandListNode ();
    commandListNode.parse (context);
  }

  public void execute () {
    for (int i = 0; i < number; i++)
      commandListNode.execute ();
  }

  public String toString () {
    return "[REPEAT " + number + " " + commandListNode + "]";
  }
}