@Override
public int hashCode() {
if (sign) {
return fNumerator.hashCode() + fDenominator.hashCode() * 17;
}
return fNumerator.hashCode() + fDenominator.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj instanceof FractionNode) {
return fNumerator.equals(((FractionNode) obj).fNumerator)
&& fDenominator.equals(((FractionNode) obj).fDenominator)
&& sign == ((FractionNode) obj).sign;
}
return false;
}
@Override
public double doubleValue() {
double numer = Double.parseDouble(fNumerator.toString());
double denom = Double.parseDouble(fDenominator.toString());
if (sign) {
return -1.0 * numer / denom;
}
return numer / denom;
}
@Override
public String toString() {
final StringBuffer buff = new StringBuffer();
if (sign) {
buff.append("-");
}
if (fNumerator != null) {
buff.append(fNumerator.toString());
}
buff.append("/");
if (fDenominator != null) {
buff.append(fDenominator.toString());
}
return buff.toString();
}
/** Destroys this {@link GroundItem}. */
public void destroy() {
if (referenceNode != null) referenceNode.removeFromList();
removeFromList();
referenceNode = null;
remove = true;
}
@Override
protected Integer visitIntegerNode(IntegerNode node) {
return node.getValue();
}
@Override
protected Boolean visitIntegerNode(IntegerNode node) {
return node.getValue() == ((IntegerNode) other).getValue();
}
