/**
* Compares the TimePoint with another instance.
* The comparison is made in this order:
* - reference
* - target
* - timestamp
* - type
*
* CAUTION!: The result order is not based on chronological order.
* Its goal is to gather TimePoint by reference and target, then sort by type and timestamp.
*
* @param TimePoint $point
* @return int
*/
public function compare(TimePoint $point)
{
$diff = strcmp($this->getRef(), $point->getRef());
if ($diff == 0) {
$diff = $this->getTarget() - $point->getTarget();
if ($diff == 0) {
$diff = $this->getNormalizedTimestamp() - $point->getNormalizedTimestamp();
if ($diff == 0) {
$diff = $this->getType() - $point->getType();
}
}
}
return $diff;
}
