-UnicodeString&
-RuleBasedNumberFormat::format(const DecimalQuantity &number,
- UnicodeString &appendTo,
- FieldPositionIterator *posIter,
- UErrorCode &status) const {
- if (U_FAILURE(status)) {
- return appendTo;
- }
- DecimalQuantity copy(number);
- if (copy.fitsInLong()) {
- format(number.toLong(), appendTo, posIter, status);
- }
- else {
- copy.roundToMagnitude(0, number::impl::RoundingMode::UNUM_ROUND_HALFEVEN, status);
- if (copy.fitsInLong()) {
- format(number.toDouble(), appendTo, posIter, status);
- }
- else {
- // We're outside of our normal range that this framework can handle.
- // The DecimalFormat will provide more accurate results.
-
- // TODO this section should probably be optimized. The DecimalFormat is shared in ICU4J.
- LocalPointer<NumberFormat> decimalFormat(NumberFormat::createInstance(locale, UNUM_DECIMAL, status), status);
- if (decimalFormat.isNull()) {
- return appendTo;
- }
- Formattable f;
- LocalPointer<DecimalQuantity> decimalQuantity(new DecimalQuantity(number), status);
- if (decimalQuantity.isNull()) {
- return appendTo;
- }
- f.adoptDecimalQuantity(decimalQuantity.orphan()); // f now owns decimalQuantity.
- decimalFormat->format(f, appendTo, posIter, status);
- }
- }
- return appendTo;
-}
-
-