compareTo method

@override int compareTo(XPathAtomic other)

Compares this object to another object.

Returns a value like a Comparator when comparing this to other. That is, it returns a negative integer if this is ordered before other, a positive integer if this is ordered after other, and zero if this and other are ordered together.

The other argument must be a value that is comparable to this object.

Implementation

@override
int compareTo(XPathAtomic other) {
  if (other is XPathNumeric) {
    final otherD = other.toDouble();
    if (value.isNaN || otherD.isNaN) return -1;
    if (value == otherD) return 0;
    return value.compareTo(otherD);
  }
  return super.compareTo(other);
}