/**
* A query for {@code ZoneOffset} returning null if not found.
* @param TemporalAccessor $temporal
* @return null|ZoneOffset
* @throws DateTimeException
*/
public static function _offset(TemporalAccessor $temporal)
{
if ($temporal->isSupported(ChronoField::OFFSET_SECONDS())) {
return ZoneOffset::ofTotalSeconds($temporal->get(ChronoField::OFFSET_SECONDS()));
}
return null;
}
/**
* Obtains an instance of {@code DayOfWeek} from a temporal object.
* <p>
* This obtains a day-of-week based on the specified temporal.
* A {@code TemporalAccessor} represents an arbitrary set of date and time information,
* which this factory converts to an instance of {@code DayOfWeek}.
* <p>
* The conversion extracts the {@link ChronoField#DAY_OF_WEEK DAY_OF_WEEK} field.
* <p>
* This method matches the signature of the functional interface {@link TemporalQuery}
* allowing it to be used as a query via method reference, {@code DayOfWeek::from}.
*
* @param TemporalAccessor $temporal the temporal object to convert, not null
* @return DayOfWeek the day-of-week, not null
* @throws DateTimeException if unable to convert to a {@code DayOfWeek}
*/
public static function from(TemporalAccessor $temporal)
{
if ($temporal instanceof DayOfWeek) {
return $temporal;
}
try {
return self::of($temporal->get(ChronoField::DAY_OF_WEEK()));
} catch (DateTimeException $ex) {
throw new DateTimeException("Unable to obtain DayOfWeek from TemporalAccessor: " . $temporal . " of type " . get_class($temporal), $ex);
}
}
/**
* Obtains an instance of {@code Instant} from a temporal object.
* <p>
* This obtains an instant based on the specified temporal.
* A {@code TemporalAccessor} represents an arbitrary set of date and time information,
* which this factory converts to an instance of {@code Instant}.
* <p>
* The conversion extracts the {@link ChronoField#INSTANT_SECONDS INSTANT_SECONDS}
* and {@link ChronoField#NANO_OF_SECOND NANO_OF_SECOND} fields.
* <p>
* This method matches the signature of the functional interface {@link TemporalQuery}
* allowing it to be used as a query via method reference, {@code Instant::from}.
*
* @param TemporalAccessor $temporal the temporal object to convert, not null
* @return Instant the instant, not null
* @throws DateTimeException if unable to convert to an Instant {@code Instant}
*/
public static function from(TemporalAccessor $temporal)
{
if ($temporal instanceof Instant) {
return $temporal;
}
try {
$instantSecs = $temporal->getLong(ChronoField::INSTANT_SECONDS());
$nanoOfSecond = $temporal->get(ChronoField::NANO_OF_SECOND());
return Instant::ofEpochSecond($instantSecs, $nanoOfSecond);
} catch (DateTimeException $ex) {
throw new DateTimeException("Unable to obtain Instant from TemporalAccessor: " . $temporal . " of type " . get_class($temporal), $ex);
}
}
private function localizedDayOfWeek(TemporalAccessor $temporal)
{
$sow = $this->weekDef->getFirstDayOfWeek()->getValue();
$isoDow = $temporal->get(CF::DAY_OF_WEEK());
return Math::floorMod($isoDow - $sow, 7) + 1;
}
