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LibJS: Fix assignment of "isNegative" in FormatNumericToString

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These are normative changes in the Intl.NumberFormat v3 spec. See:
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Timothy Flynn 2023-01-12 09:08:45 -05:00 • committed by Linus Groh
parent d30e96a209
commit 2cca5d6676
1 changed files with 25 additions and 24 deletions
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49
Userland/Libraries/LibJS/Runtime/Intl/NumberFormat.cpp
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@ -386,24 +386,25 @@ FormatResult format_numeric_to_string(NumberFormatBase const& intl_object, Mathe
// a. Let isNegative be true.
is_negative = true;
// b. Let x be the mathematical value 0.
// b. Set x to 0.
number = MathematicalValue(0.0);
}
// 2. Else,
else {
// a. Assert: x is a mathematical value.
VERIFY(number.is_mathematical_value());
// 2. Assert: x is a mathematical value.
VERIFY(number.is_mathematical_value());
// b. If x < 0, let isNegative be true; else let isNegative be false.
is_negative = number.is_negative();
// 3. If x < 0, let isNegative be true; else let isNegative be false.
// FIXME: Spec issue: this step would override step 1a, see https://github.com/tc39/proposal-intl-numberformat-v3/issues/67
if (number.is_negative()) {
is_negative = true;
// 4. If isNegative, then
// a. Let x be -x.
number.negate();
// c. If isNegative, then
if (is_negative) {
// i. Set x to -x.
number.negate();
}
}
// 5. Let unsignedRoundingMode be GetUnsignedRoundingMode(intlObject.[[RoundingMode]], isNegative).
// 3. Let unsignedRoundingMode be GetUnsignedRoundingMode(intlObject.[[RoundingMode]], isNegative).
// FIXME: Spec issue: Intl.PluralRules does not have [[RoundingMode]], see https://github.com/tc39/proposal-intl-numberformat-v3/issues/103
Optional<NumberFormat::UnsignedRoundingMode> unsigned_rounding_mode;
if (intl_object.rounding_mode() != NumberFormat::RoundingMode::Invalid)
@ -412,19 +413,19 @@ FormatResult format_numeric_to_string(NumberFormatBase const& intl_object, Mathe
RawFormatResult result {};
switch (intl_object.rounding_type()) {
// 6. If intlObject.[[RoundingType]] is significantDigits, then
// 4. If intlObject.[[RoundingType]] is significantDigits, then
case NumberFormatBase::RoundingType::SignificantDigits:
// a. Let result be ToRawPrecision(x, intlObject.[[MinimumSignificantDigits]], intlObject.[[MaximumSignificantDigits]], unsignedRoundingMode).
result = to_raw_precision(number, intl_object.min_significant_digits(), intl_object.max_significant_digits(), unsigned_rounding_mode);
break;
// 7. Else if intlObject.[[RoundingType]] is fractionDigits, then
// 5. Else if intlObject.[[RoundingType]] is fractionDigits, then
case NumberFormatBase::RoundingType::FractionDigits:
// a. Let result be ToRawFixed(x, intlObject.[[MinimumFractionDigits]], intlObject.[[MaximumFractionDigits]], intlObject.[[RoundingIncrement]], unsignedRoundingMode).
result = to_raw_fixed(number, intl_object.min_fraction_digits(), intl_object.max_fraction_digits(), intl_object.rounding_increment(), unsigned_rounding_mode);
break;
// 8. Else,
// 6. Else,
case NumberFormatBase::RoundingType::MorePrecision:
case NumberFormatBase::RoundingType::LessPrecision: {
// a. Let sResult be ToRawPrecision(x, intlObject.[[MinimumSignificantDigits]], intlObject.[[MaximumSignificantDigits]], unsignedRoundingMode).
@ -470,13 +471,13 @@ FormatResult format_numeric_to_string(NumberFormatBase const& intl_object, Mathe
VERIFY_NOT_REACHED();
}
// 9. Let x be result.[[RoundedNumber]].
// 7. Let x be result.[[RoundedNumber]].
number = move(result.rounded_number);
// 10. Let string be result.[[FormattedString]].
// 8. Let string be result.[[FormattedString]].
auto string = move(result.formatted_string);
// 11. If intlObject.[[TrailingZeroDisplay]] is "stripIfInteger" and x modulo 1 = 0, then
// 9. If intlObject.[[TrailingZeroDisplay]] is "stripIfInteger" and x modulo 1 = 0, then
if ((intl_object.trailing_zero_display() == NumberFormat::TrailingZeroDisplay::StripIfInteger) && number.modulo_is_zero(1)) {
// a. If string contains ".", then
if (auto index = string.find('.'); index.has_value()) {
@ -485,13 +486,13 @@ FormatResult format_numeric_to_string(NumberFormatBase const& intl_object, Mathe
}
}
// 12. Let int be result.[[IntegerDigitsCount]].
// 10. Let int be result.[[IntegerDigitsCount]].
int digits = result.digits;
// 13. Let minInteger be intlObject.[[MinimumIntegerDigits]].
// 11. Let minInteger be intlObject.[[MinimumIntegerDigits]].
int min_integer = intl_object.min_integer_digits();
// 14. If int < minInteger, then
// 12. If int < minInteger, then
if (digits < min_integer) {
// a. Let forwardZeros be the String consisting of minInteger–int occurrences of the character "0".
auto forward_zeros = DeprecatedString::repeated('0', min_integer - digits);
@ -500,18 +501,18 @@ FormatResult format_numeric_to_string(NumberFormatBase const& intl_object, Mathe
string = DeprecatedString::formatted("{}{}", forward_zeros, string);
}
// 15. If isNegative and x is 0, then
// 13. If isNegative and x is 0, then
if (is_negative && number.is_zero()) {
// a. Let x be -0.
number = MathematicalValue { MathematicalValue::Symbol::NegativeZero };
}
// 16. Else if isNegative, then
// 14. Else if isNegative, then
else if (is_negative) {
// b. Let x be -x.
number.negate();
}
// 17. Return the Record { [[RoundedNumber]]: x, [[FormattedString]]: string }.
// 15. Return the Record { [[RoundedNumber]]: x, [[FormattedString]]: string }.
return { move(string), move(number) };
}