/**
* Calculates the range of months based on the temporal.
*
* @param temporal the temporal, not null
* @return the month range, negative if not fixed range
*/
private long monthRange(Temporal temporal) {
ValueRange startRange = Chronology.from(temporal).range(MONTH_OF_YEAR);
if (startRange.isFixed() && startRange.isIntValue()) {
return startRange.getMaximum() - startRange.getMinimum() + 1;
}
return -1;
}
// -----------------------------------------------------------------------
// range() and rangeRefinedBy(TemporalAccessor temporal)
// -----------------------------------------------------------------------
@Test
public void test_range() {
assertEquals(MONTH_OF_YEAR.range(), ValueRange.of(1, 12));
assertEquals(MONTH_OF_YEAR.rangeRefinedBy(LocalDate.of(2000, 2, 29)), ValueRange.of(1, 12));
assertEquals(DAY_OF_MONTH.range(), ValueRange.of(1, 28, 31));
assertEquals(DAY_OF_MONTH.rangeRefinedBy(LocalDate.of(2000, 2, 29)), ValueRange.of(1, 29));
}
ValueRange rangeChrono(ChronoField field) {
switch (field) {
case DAY_OF_MONTH:
return ValueRange.of(1, lengthOfMonth());
case DAY_OF_YEAR:
return ValueRange.of(1, lengthOfYear());
case ALIGNED_WEEK_OF_MONTH:
return rangeAlignedWeekOfMonth();
default:
break;
}
return getChronology().range(field);
}