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ICU-22950 Do not initialize currency for NumberPropertyMapper when useCurrency is false #3250

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ICU-22950 Do not initialize currency for NumberPropertyMapper when useCurrency is false #3250

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937f002
ICU-22950 Do not initialize currency redandantly
nightelf3 Oct 21, 2024
85c713b
ICU-22950 Do not initialize currency redandantly - fixes
nightelf3 Oct 21, 2024
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9 changes: 6 additions & 3 deletions icu4c/source/i18n/number_mapper.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -74,9 +74,11 @@ MacroProps NumberPropertyMapper::oldToNew(const DecimalFormatProperties& propert
!properties.currencyPluralInfo.fPtr.isNull() ||
!properties.currencyUsage.isNull() ||
warehouse.affixProvider.get().hasCurrencySign());
CurrencyUnit currency = resolveCurrency(properties, locale, status);
UCurrencyUsage currencyUsage = properties.currencyUsage.getOrDefault(UCURR_USAGE_STANDARD);
CurrencyUnit currency;
UCurrencyUsage currencyUsage;
Comment on lines +77 to +78
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I expanded the rest of this (long) function, searched for "currency", and found some code that uses these variables but is gated by conditions other than useCurrency.

  • if (!properties.currencyUsage.isNull())
  • if (exportedProperties != nullptr)

If we think we can guarantee that useCurrency is true there, then we should add U_ASSERT(useCurrency) there.
For the second one, maybe a default-constructed currency is fine if not useCurrency?
Otherwise, we may need to add a runtime check for useCurrency.

@sffc @mihnita @richgillam @eggrobin

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Markus is right; this is a concern.

For if (!properties.currencyUsage.isNull()), I wonder if this could just be changed to useCurrency?

For exportedProperties->currency, I agree that a default-constructed currency ought to be fine.

For if (precision.fType == Precision::PrecisionType::RND_CURRENCY), I wonder if we could change this to if (useCurrency && precision.fType == Precision::PrecisionType::RND_CURRENCY)?

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Added an assertion to if (!properties.currencyUsage.isNull()), since useCurrency is true when !properties.currencyUsage.isNull()
Used if (useCurrency && precision.fType == Precision::PrecisionType::RND_CURRENCY), thank you!

if (useCurrency) {
currency = resolveCurrency(properties, locale, status);
currencyUsage = properties.currencyUsage.getOrDefault(UCURR_USAGE_STANDARD);
// NOTE: Slicing is OK.
macros.unit = currency; // NOLINT
}
Expand Down Expand Up @@ -129,6 +131,7 @@ MacroProps NumberPropertyMapper::oldToNew(const DecimalFormatProperties& propert
}
Precision precision;
if (!properties.currencyUsage.isNull()) {
U_ASSERT(useCurrency);
precision = Precision::constructCurrency(currencyUsage).withCurrency(currency);
} else if (roundingIncrement != 0.0) {
if (PatternStringUtils::ignoreRoundingIncrement(roundingIncrement, maxFrac)) {
Expand Down Expand Up @@ -276,7 +279,7 @@ MacroProps NumberPropertyMapper::oldToNew(const DecimalFormatProperties& propert
exportedProperties->maximumIntegerDigits = maxInt == -1 ? INT32_MAX : maxInt;

Precision rounding_;
if (precision.fType == Precision::PrecisionType::RND_CURRENCY) {
if (useCurrency && precision.fType == Precision::PrecisionType::RND_CURRENCY) {
rounding_ = precision.withCurrency(currency, status);
} else {
rounding_ = precision;
Expand Down