/**
* Checks whether a field type is supported, and if so adds the new value to the relevent index in
* the specified array.
*
* @param type the field type
* @param values the array to update
* @param newValue the new value to store if successful
*/
private void checkAndUpdate(DurationFieldType type, int[] values, int newValue) {
int index = indexOf(type);
if (index == -1) {
if (newValue != 0) {
throw new IllegalArgumentException(
"Period does not support field '" + type.getName() + "'");
}
} else {
values[index] = newValue;
}
}
/**
* Adds the fields from another period.
*
* @param values the array of values to update
* @param period the period to add from, not null
* @return the updated values
* @throws IllegalArgumentException if an unsupported field's value is non-zero
*/
protected int[] addPeriodInto(int[] values, ReadablePeriod period) {
for (int i = 0, isize = period.size(); i < isize; i++) {
DurationFieldType type = period.getFieldType(i);
int value = period.getValue(i);
if (value != 0) {
int index = indexOf(type);
if (index == -1) {
throw new IllegalArgumentException(
"Period does not support field '" + type.getName() + "'");
} else {
values[index] = FieldUtils.safeAdd(getValue(index), value);
}
}
}
return values;
}