public void Visit(AdditionExpression ae)
{
sb.Append("(");
ae.Left.Accept(this);
sb.Append("+");
ae.Right.Accept(this);
sb.Append(")");
}
public static void Main()
{
var e = new AdditionExpression(
new DoubleExpression(1),
new AdditionExpression(
new DoubleExpression(2),
new DoubleExpression(3)));
var ep = new ExpressionPrinter();
ep.Visit(e);
Console.WriteLine(ep.ToString());
}
