@Override
public String toOperatorString(CalcFunction function) {
int precedence = getPrecedence();
char operatorChar = '+';
StringBuffer buffer = new StringBuffer();
CalcObject temp;
for (int ii = 0; ii < function.size(); ii++) {
temp = function.get(ii);
if (temp.getHeader().equals(CALC.MULTIPLY)
&& ((CalcFunction) temp).get(0).compareTo(CALC.ZERO) < 0) {
// special case -> negative number
buffer.append(temp);
continue;
} else {
if (ii > 0) {
buffer.append(operatorChar);
}
if (temp.getPrecedence() < precedence) {
buffer.append('(');
}
buffer.append(temp.toString());
if (temp.getPrecedence() < precedence) {
buffer.append(')');
}
}
}
return buffer.toString();
}
