public function countInRange(DateRange $range, $overlappedBounds = true)
{
$range = $range->toTimestampRange();
$start = $this->truncate($range->getStart(), !$overlappedBounds);
$end = $this->truncate($range->getEnd(), $overlappedBounds);
if ($this->seconds) {
$result = ($end->toStamp() - $start->toStamp()) / $this->seconds;
} elseif ($this->days) {
$epochStartTruncated = Date::create('1970-01-05');
$startDifference = Date::dayDifference($epochStartTruncated, Date::create($start->toDate()));
$endDifference = Date::dayDifference($epochStartTruncated, Date::create($end->toDate()));
$result = ($endDifference - $startDifference) / $this->days;
} elseif ($this->months) {
$startMonthsCount = $start->getYear() * 12 + ($start->getMonth() - 1);
$endMonthsCount = $end->getYear() * 12 + ($end->getMonth() - 1);
$result = ($endMonthsCount - $startMonthsCount) / $this->months;
}
Assert::isEqual($result, (int) $result, 'floating point mistake, arguments: ' . $this->name . ', ' . $start->toStamp() . ', ' . $end->toStamp() . ', ' . 'result: ' . var_export($result, true));
return (int) $result;
}
