/**
* Gets the day-of-week field, which is an enum {@code DayOfWeek}.
* <p>
* This method returns the enum {@link DayOfWeek} for the day-of-week.
* This avoids confusion as to what {@code int} values mean.
* If you need access to the primitive {@code int} value then the enum
* provides the {@link DayOfWeek#getValue() int value}.
* <p>
* Additional information can be obtained from the {@code DayOfWeek}.
* This includes textual names of the values.
*
* @return DayOfWeek the day-of-week, not null
*/
public function getDayOfWeek()
{
$dow0 = Math::floorMod($this->toEpochDay() + 3, 7);
return DayOfWeek::of($dow0 + 1);
}
/**
* @dataProvider data_minus
*/
public function test_minus_long($base, $amount, $expected)
{
$this->assertEquals(DayOfWeek::of($base)->minus($amount), DayOfWeek::of($expected));
}
protected function resolveAligned(ChronoLocalDate $base, $months, $weeks, $dow)
{
$date = $base->plus($months, ChronoUnit::MONTHS())->plus($weeks, ChronoUnit::WEEKS());
if ($dow > 7) {
$date = $date->plus(($dow - 1) / 7, ChronoUnit::WEEKS());
$dow = ($dow - 1) % 7 + 1;
} else {
if ($dow < 1) {
$date = $date->plus(Math::subtractExact($dow, 7) / 7, ChronoUnit::WEEKS());
$dow = ($dow + 6) % 7 + 1;
}
}
return $date->adjust(TemporalAdjusters::nextOrSame(DayOfWeek::of((int) $dow)));
}
/**
* @param string $str
* @return DayOfWeek
* @throws IllegalArgumentException
*/
private function parseDayOfWeek($str)
{
if (preg_match(self::$DOW, $str, $mr)) {
for ($dow = 1; $dow < 8 && $dow < count($mr); $dow++) {
if ($mr[$dow] !== '') {
return DayOfWeek::of($dow);
}
}
}
throw new IllegalArgumentException("Unknown day-of-week: " . $str);
}
