private function previous(LocalDate $date)
{
$newDayOfMonth = $date->getDayOfMonth() - 1;
if ($newDayOfMonth > 0) {
return $date->withDayOfMonth($newDayOfMonth);
}
$date = $date->adjust($date->getMonth()->minus(1));
if ($date->getMonth() == Month::DECEMBER()) {
$date = $date->withYear($date->getYear() - 1);
}
return $date->withDayOfMonth($date->getMonth()->length(Year::isLeapYear($date->getYear())));
}
/**
* Returns a copy of this {@code LocalDateTime} with the day-of-month altered.
* <p>
* If the resulting date-time is invalid, an exception is thrown.
* The time does not affect the calculation and will be the same in the result.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param int $dayOfMonth the day-of-month to set in the result, from 1 to 28-31
* @return LocalDateTime a {@code LocalDateTime} based on this date-time with the requested day, not null
* @throws DateTimeException if the day-of-month value is invalid,
* or if the day-of-month is invalid for the month-year
*/
public function withDayOfMonth($dayOfMonth)
{
return $this->_with($this->date->withDayOfMonth($dayOfMonth), $this->time);
}