@Override
public int when(int year, boolean shift, int base) {
if (!isYearValid(year, base)) {
return BigDate.NULL_ORDINAL;
}
return boxingDayShift(BigDate.toOrdinal(year, 12, 26), shift);
} // end when.
static int boxingDayShift(int ordinal, boolean shift) {
// This is complicated because preceeding Christmas day may be shifted too.
if (shift) {
switch (BigDate.dayOfWeek(ordinal)) {
case 0:
/* sunday */
/* shift to Monday */
return ordinal + 1;
case 1:
/* monday */
/* shift to Tuesday */
return ordinal + 1;
case 2:
/* tuesday */
case 3:
/* wednesday */
case 4:
/* thursday */
case 5:
/* friday */
default:
return ordinal;
case 6:
/* saturday */
/* shift to Monday */
return ordinal + 2;
} // end switch
} // end if
else {
return ordinal;
}
} // end boxingDayShift