@Override
 public boolean accept(ExpressionVisitor v) {
   if (v.visitEnter(this)) {
     for (ExpressionNode operand : operands) {
       if (!operand.accept(v)) break;
     }
   }
   return v.visitLeave(this);
 }
 /**
  * Implementation of the visitor design pattern.
  *
  * <p>Calls visit on the visitor and then passes the visitor on to the accept method of the base
  * and the exponent.
  *
  * @param visitor the visitor
  */
 public void accept(ExpressionNodeVisitor visitor) {
   visitor.visit(this);
   base.accept(visitor);
   exponent.accept(visitor);
 }
예제 #3
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 /**
  * Implementation of the visitor design pattern.
  *
  * <p>Calls visit on the visitor and then passes the visitor on to the accept method of the
  * argument.
  *
  * @param visitor the visitor
  */
 public void accept(ExpressionNodeVisitor visitor) {
   visitor.visit(this);
   argument.accept(visitor);
 }