public override void Visit(AdditionExpression ae)
{
sb.Append("(");
ae.LHS.Accept(this);
sb.Append("+");
ae.RHS.Accept(this);
sb.Append(")");
}
static void Main(string[] args)
{
var e = new AdditionExpression(
new Value(1),
new AdditionExpression(
new MultiplicationExpression(
new Value(2),
new Value(3)),
new Value(4)));
var ep = new ExpressionPrinter();
ep.Visit(e);
Console.WriteLine(ep);
}
public abstract void Visit(AdditionExpression ex);