int32_t NumberFormatterImpl::writeNumber(const MicroProps& micros, DecimalQuantity& quantity,
NumberStringBuilder& string, UErrorCode& status) {
int32_t length = 0;
if (quantity.isInfinite()) {
length += string.insert(
length,
micros.symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kInfinitySymbol),
UNUM_INTEGER_FIELD,
status);
} else if (quantity.isNaN()) {
length += string.insert(
length,
micros.symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kNaNSymbol),
UNUM_INTEGER_FIELD,
status);
} else {
// Add the integer digits
length += writeIntegerDigits(micros, quantity, string, status);
// Add the decimal point
if (quantity.getLowerDisplayMagnitude() < 0 || micros.decimal == UNUM_DECIMAL_SEPARATOR_ALWAYS) {
length += string.insert(
length,
micros.useCurrency ? micros.symbols->getSymbol(
DecimalFormatSymbols::ENumberFormatSymbol::kMonetarySeparatorSymbol) : micros
.symbols
->getSymbol(
DecimalFormatSymbols::ENumberFormatSymbol::kDecimalSeparatorSymbol),
UNUM_DECIMAL_SEPARATOR_FIELD,
status);
}
// Add the fraction digits
length += writeFractionDigits(micros, quantity, string, status);
}
return length;
}
int32_t ScientificModifier::apply(NumberStringBuilder &output, int32_t /*leftIndex*/, int32_t rightIndex,
UErrorCode &status) const {
// FIXME: Localized exponent separator location.
int i = rightIndex;
// Append the exponent separator and sign
i += output.insert(
i,
fHandler->fSymbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kExponentialSymbol),
UNUM_EXPONENT_SYMBOL_FIELD,
status);
if (fExponent < 0 && fHandler->fSettings.fExponentSignDisplay != UNUM_SIGN_NEVER) {
i += output.insert(
i,
fHandler->fSymbols
->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kMinusSignSymbol),
UNUM_EXPONENT_SIGN_FIELD,
status);
} else if (fExponent >= 0 && fHandler->fSettings.fExponentSignDisplay == UNUM_SIGN_ALWAYS) {
i += output.insert(
i,
fHandler->fSymbols
->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kPlusSignSymbol),
UNUM_EXPONENT_SIGN_FIELD,
status);
}
// Append the exponent digits (using a simple inline algorithm)
int32_t disp = std::abs(fExponent);
for (int j = 0; j < fHandler->fSettings.fMinExponentDigits || disp > 0; j++, disp /= 10) {
auto d = static_cast<int8_t>(disp % 10);
i += utils::insertDigitFromSymbols(
output,
i - j,
d,
*fHandler->fSymbols,
UNUM_EXPONENT_FIELD,
status);
}
return i - rightIndex;
}
int32_t
AffixUtils::unescape(const CharSequence &affixPattern, NumberStringBuilder &output, int32_t position,
const SymbolProvider &provider, UErrorCode &status) {
int32_t length = 0;
AffixTag tag;
while (hasNext(tag, affixPattern)) {
tag = nextToken(tag, affixPattern, status);
if (U_FAILURE(status)) { return length; }
if (tag.type == TYPE_CURRENCY_OVERFLOW) {
// Don't go to the provider for this special case
length += output.insertCodePoint(position + length, 0xFFFD, UNUM_CURRENCY_FIELD, status);
} else if (tag.type < 0) {
length += output.insert(
position + length, provider.getSymbol(tag.type), getFieldForType(tag.type), status);
} else {
length += output.insertCodePoint(position + length, tag.codePoint, UNUM_FIELD_COUNT, status);
}
}
return length;
}
int32_t NumberFormatterImpl::writeIntegerDigits(const MicroProps& micros, DecimalQuantity& quantity,
NumberStringBuilder& string, UErrorCode& status) {
int length = 0;
int integerCount = quantity.getUpperDisplayMagnitude() + 1;
for (int i = 0; i < integerCount; i++) {
// Add grouping separator
if (micros.grouping.groupAtPosition(i, quantity)) {
length += string.insert(
0,
micros.useCurrency ? micros.symbols->getSymbol(
DecimalFormatSymbols::ENumberFormatSymbol::kMonetaryGroupingSeparatorSymbol)
: micros.symbols->getSymbol(
DecimalFormatSymbols::ENumberFormatSymbol::kGroupingSeparatorSymbol),
UNUM_GROUPING_SEPARATOR_FIELD,
status);
}
// Get and append the next digit value
int8_t nextDigit = quantity.getDigit(i);
length += utils::insertDigitFromSymbols(
string, 0, nextDigit, *micros.symbols, UNUM_INTEGER_FIELD, status);
}
return length;
}
