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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;
}
}
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