public function addTo(Temporal $temporal, $amount)
{
switch ($this) {
case IsoFields::WEEK_BASED_YEARS():
return $temporal->with(IsoFields::WEEK_BASED_YEAR(), Math::addExact($temporal->get(IsoFields::WEEK_BASED_YEAR()), $amount));
case IsoFields::QUARTER_YEARS():
// no overflow (256 is multiple of 4)
return $temporal->plus($amount / 256, ChronoUnit::YEARS())->plus($amount % 256 * 3, ChronoUnit::MONTHS());
default:
throw new IllegalStateException("Unreachable");
}
}
public function getRangeUnit()
{
return IsoFields::QUARTER_YEARS();
}
/**
* @dataProvider data_quartersBetween
*/
public function test_quarters_between_until(LocalDate $start, Temporal $end, $expected)
{
$this->assertEquals($start->until($end, IsoFields::QUARTER_YEARS()), $expected);
}
