/**
* Converts Calendar's time field values to GMT as milliseconds.
*
* @author Dominik del Bondio <*****@*****.**>
* @author The ICU Project
* @since 0.11.0
*/
protected function computeTime()
{
if (!$this->isLenient()) {
$this->validateFields();
}
// Compute the Julian day
$julianDay = $this->computeJulianDay();
$millis = AgaviCalendarGrego::julianDayToMillis($julianDay);
$millisInDay = 0;
// We only use MILLISECONDS_IN_DAY if it has been set by the user.
// This makes it possible for the caller to set the calendar to a
// time and call clear(MONTH) to reset the MONTH to January. This
// is legacy behavior. Without this, clear(MONTH) has no effect,
// since the internally set JULIAN_DAY is used.
if ($this->fStamp[AgaviDateDefinitions::MILLISECONDS_IN_DAY] >= self::kMinimumUserStamp && $this->newestStamp(AgaviDateDefinitions::AM_PM, AgaviDateDefinitions::MILLISECOND, self::kUnset) <= $this->fStamp[AgaviDateDefinitions::MILLISECONDS_IN_DAY]) {
$millisInDay = $this->internalGet(AgaviDateDefinitions::MILLISECONDS_IN_DAY);
} else {
$millisInDay = $this->computeMillisInDay();
}
// Compute the time zone offset and DST offset. There are two potential
// ambiguities here. We'll assume a 2:00 am (wall time) switchover time
// for discussion purposes here.
// 1. The transition into DST. Here, a designated time of 2:00 am - 2:59 am
// can be in standard or in DST depending. However, 2:00 am is an invalid
// representation (the representation jumps from 1:59:59 am Std to 3:00:00 am DST).
// We assume standard time.
// 2. The transition out of DST. Here, a designated time of 1:00 am - 1:59 am
// can be in standard or DST. Both are valid representations (the rep
// jumps from 1:59:59 DST to 1:00:00 Std).
// Again, we assume standard time.
// We use the TimeZone object, unless the user has explicitly set the ZONE_OFFSET
// or DST_OFFSET fields; then we use those fields.
if ($this->fStamp[AgaviDateDefinitions::ZONE_OFFSET] >= self::kMinimumUserStamp || $this->fStamp[AgaviDateDefinitions::DST_OFFSET] >= self::kMinimumUserStamp) {
$millisInDay -= $this->internalGet(AgaviDateDefinitions::ZONE_OFFSET) + $this->internalGet(AgaviDateDefinitions::DST_OFFSET);
} else {
$millisInDay -= $this->computeZoneOffset($millis, $millisInDay);
}
$this->internalSetTime($millis + $millisInDay);
}
