package net.sven_eisenhauer.swa_prakt1;

public class PrintIter implements ExpIter {

	@Override
	public Number traverse(ArithmeticExpression exp) {
		if(exp instanceof ArithmeticVariable) {
			System.out.print(((ArithmeticVariable) exp).getName());
		} else {
			ArithmeticOperation actOp = (ArithmeticOperation) exp;
			System.out.print("(");
			traverse(actOp.getLeftOperand());
			System.out.print(actOp.getOperationSign());
			traverse(actOp.getRightOperand());
			System.out.print(")");
		}
		return 0;
	}
}