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Diffstat (limited to 'intl/icu/source/i18n/numfmt.cpp')
| -rw-r--r-- | intl/icu/source/i18n/numfmt.cpp | 1536 |
1 files changed, 1536 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/numfmt.cpp b/intl/icu/source/i18n/numfmt.cpp new file mode 100644 index 0000000000..74689e1363 --- /dev/null +++ b/intl/icu/source/i18n/numfmt.cpp @@ -0,0 +1,1536 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* Copyright (C) 1997-2015, International Business Machines Corporation and +* others. All Rights Reserved. +******************************************************************************* +* +* File NUMFMT.CPP +* +* Modification History: +* +* Date Name Description +* 02/19/97 aliu Converted from java. +* 03/18/97 clhuang Implemented with C++ APIs. +* 04/17/97 aliu Enlarged MAX_INTEGER_DIGITS to fully accommodate the +* largest double, by default. +* Changed DigitCount to int per code review. +* 07/20/98 stephen Changed operator== to check for grouping +* Changed setMaxIntegerDigits per Java implementation. +* Changed setMinIntegerDigits per Java implementation. +* Changed setMinFractionDigits per Java implementation. +* Changed setMaxFractionDigits per Java implementation. +******************************************************************************** +*/ + +#include "unicode/utypes.h" + +#if !UCONFIG_NO_FORMATTING + +#include "unicode/numfmt.h" +#include "unicode/locid.h" +#include "unicode/dcfmtsym.h" +#include "unicode/decimfmt.h" +#include "unicode/ustring.h" +#include "unicode/ucurr.h" +#include "unicode/curramt.h" +#include "unicode/numsys.h" +#include "unicode/rbnf.h" +#include "unicode/localpointer.h" +#include "unicode/udisplaycontext.h" +#include "charstr.h" +#include "winnmfmt.h" +#include "uresimp.h" +#include "uhash.h" +#include "cmemory.h" +#include "servloc.h" +#include "ucln_in.h" +#include "cstring.h" +#include "putilimp.h" +#include "uassert.h" +#include "umutex.h" +#include "mutex.h" +#include <float.h> +#include "sharednumberformat.h" +#include "unifiedcache.h" +#include "number_decimalquantity.h" +#include "number_utils.h" + +//#define FMT_DEBUG + +#ifdef FMT_DEBUG +#include <stdio.h> +static inline void debugout(UnicodeString s) { + char buf[2000]; + s.extract((int32_t) 0, s.length(), buf); + printf("%s", buf); +} +#define debug(x) printf("%s", x); +#else +#define debugout(x) +#define debug(x) +#endif + +// If no number pattern can be located for a locale, this is the last +// resort. The patterns are same as the ones in root locale. +static const char16_t gLastResortDecimalPat[] = { + 0x23, 0x2C, 0x23, 0x23, 0x30, 0x2E, 0x23, 0x23, 0x23, 0 /* "#,##0.###" */ +}; +static const char16_t gLastResortCurrencyPat[] = { + 0xA4, 0xA0, 0x23, 0x2C, 0x23, 0x23, 0x30, 0x2E, 0x30, 0x30, 0 /* "\u00A4\u00A0#,##0.00" */ +}; +static const char16_t gLastResortPercentPat[] = { + 0x23, 0x2C, 0x23, 0x23, 0x30, 0x25, 0 /* "#,##0%" */ +}; +static const char16_t gLastResortScientificPat[] = { + 0x23, 0x45, 0x30, 0 /* "#E0" */ +}; +static const char16_t gLastResortIsoCurrencyPat[] = { + 0xA4, 0xA4, 0xA0, 0x23, 0x2C, 0x23, 0x23, 0x30, 0x2E, 0x30, 0x30, 0 /* "\u00A4\u00A4\u00A0#,##0.00" */ +}; +static const char16_t gLastResortPluralCurrencyPat[] = { + 0x23, 0x2C, 0x23, 0x23, 0x30, 0x2E, 0x23, 0x23, 0x23, 0x20, 0xA4, 0xA4, 0xA4, 0 /* "#,##0.### \u00A4\u00A4\u00A4*/ +}; +static const char16_t gLastResortAccountingCurrencyPat[] = { + 0xA4, 0xA0, 0x23, 0x2C, 0x23, 0x23, 0x30, 0x2E, 0x30, 0x30, 0 /* "\u00A4\u00A0#,##0.00" */ +}; + +static const char16_t gSingleCurrencySign[] = {0xA4, 0}; +static const char16_t gDoubleCurrencySign[] = {0xA4, 0xA4, 0}; + +static const char16_t gSlash = 0x2f; + +// If the maximum base 10 exponent were 4, then the largest number would +// be 99,999 which has 5 digits. +// On IEEE754 systems gMaxIntegerDigits is 308 + possible denormalized 15 digits + rounding digit +// With big decimal, the max exponent is 999,999,999 and the max number of digits is the same, 999,999,999 +const int32_t icu::NumberFormat::gDefaultMaxIntegerDigits = 2000000000; +const int32_t icu::NumberFormat::gDefaultMinIntegerDigits = 127; + +static const char16_t * const gLastResortNumberPatterns[UNUM_FORMAT_STYLE_COUNT] = { + nullptr, // UNUM_PATTERN_DECIMAL + gLastResortDecimalPat, // UNUM_DECIMAL + gLastResortCurrencyPat, // UNUM_CURRENCY + gLastResortPercentPat, // UNUM_PERCENT + gLastResortScientificPat, // UNUM_SCIENTIFIC + nullptr, // UNUM_SPELLOUT + nullptr, // UNUM_ORDINAL + nullptr, // UNUM_DURATION + gLastResortDecimalPat, // UNUM_NUMBERING_SYSTEM + nullptr, // UNUM_PATTERN_RULEBASED + gLastResortIsoCurrencyPat, // UNUM_CURRENCY_ISO + gLastResortPluralCurrencyPat, // UNUM_CURRENCY_PLURAL + gLastResortAccountingCurrencyPat, // UNUM_CURRENCY_ACCOUNTING + gLastResortCurrencyPat, // UNUM_CASH_CURRENCY + nullptr, // UNUM_DECIMAL_COMPACT_SHORT + nullptr, // UNUM_DECIMAL_COMPACT_LONG + gLastResortCurrencyPat, // UNUM_CURRENCY_STANDARD +}; + +// Keys used for accessing resource bundles + +static const icu::number::impl::CldrPatternStyle gFormatCldrStyles[UNUM_FORMAT_STYLE_COUNT] = { + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_PATTERN_DECIMAL + icu::number::impl::CLDR_PATTERN_STYLE_DECIMAL, // UNUM_DECIMAL + icu::number::impl::CLDR_PATTERN_STYLE_CURRENCY, // UNUM_CURRENCY + icu::number::impl::CLDR_PATTERN_STYLE_PERCENT, // UNUM_PERCENT + icu::number::impl::CLDR_PATTERN_STYLE_SCIENTIFIC, // UNUM_SCIENTIFIC + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_SPELLOUT + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_ORDINAL + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_DURATION + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_NUMBERING_SYSTEM + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_PATTERN_RULEBASED + // For UNUM_CURRENCY_ISO and UNUM_CURRENCY_PLURAL, + // the pattern is the same as the pattern of UNUM_CURRENCY + // except for replacing the single currency sign with + // double currency sign or triple currency sign. + icu::number::impl::CLDR_PATTERN_STYLE_CURRENCY, // UNUM_CURRENCY_ISO + icu::number::impl::CLDR_PATTERN_STYLE_CURRENCY, // UNUM_CURRENCY_PLURAL + icu::number::impl::CLDR_PATTERN_STYLE_ACCOUNTING, // UNUM_CURRENCY_ACCOUNTING + icu::number::impl::CLDR_PATTERN_STYLE_CURRENCY, // UNUM_CASH_CURRENCY + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_DECIMAL_COMPACT_SHORT + /* nullptr */ icu::number::impl::CLDR_PATTERN_STYLE_COUNT, // UNUM_DECIMAL_COMPACT_LONG + icu::number::impl::CLDR_PATTERN_STYLE_CURRENCY, // UNUM_CURRENCY_STANDARD +}; + +// Static hashtable cache of NumberingSystem objects used by NumberFormat +static UHashtable * NumberingSystem_cache = nullptr; +static icu::UInitOnce gNSCacheInitOnce {}; + +#if !UCONFIG_NO_SERVICE +static icu::ICULocaleService* gService = nullptr; +static icu::UInitOnce gServiceInitOnce {}; +#endif + +/** + * Release all static memory held by Number Format. + */ +U_CDECL_BEGIN +static void U_CALLCONV +deleteNumberingSystem(void *obj) { + delete (icu::NumberingSystem *)obj; +} + +static UBool U_CALLCONV numfmt_cleanup() { +#if !UCONFIG_NO_SERVICE + gServiceInitOnce.reset(); + if (gService) { + delete gService; + gService = nullptr; + } +#endif + gNSCacheInitOnce.reset(); + if (NumberingSystem_cache) { + // delete NumberingSystem_cache; + uhash_close(NumberingSystem_cache); + NumberingSystem_cache = nullptr; + } + return true; +} +U_CDECL_END + +// ***************************************************************************** +// class NumberFormat +// ***************************************************************************** + +U_NAMESPACE_BEGIN + +UOBJECT_DEFINE_ABSTRACT_RTTI_IMPLEMENTATION(NumberFormat) + +#if !UCONFIG_NO_SERVICE +// ------------------------------------- +// SimpleNumberFormatFactory implementation +NumberFormatFactory::~NumberFormatFactory() {} +SimpleNumberFormatFactory::SimpleNumberFormatFactory(const Locale& locale, UBool visible) + : _visible(visible) +{ + LocaleUtility::initNameFromLocale(locale, _id); +} + +SimpleNumberFormatFactory::~SimpleNumberFormatFactory() {} + +UBool SimpleNumberFormatFactory::visible() const { + return _visible; +} + +const UnicodeString * +SimpleNumberFormatFactory::getSupportedIDs(int32_t &count, UErrorCode& status) const +{ + if (U_SUCCESS(status)) { + count = 1; + return &_id; + } + count = 0; + return nullptr; +} +#endif /* #if !UCONFIG_NO_SERVICE */ + +// ------------------------------------- +// default constructor +NumberFormat::NumberFormat() +: fGroupingUsed(true), + fMaxIntegerDigits(gDefaultMaxIntegerDigits), + fMinIntegerDigits(1), + fMaxFractionDigits(3), // invariant, >= minFractionDigits + fMinFractionDigits(0), + fParseIntegerOnly(false), + fLenient(false), + fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE) +{ + fCurrency[0] = 0; +} + +// ------------------------------------- + +NumberFormat::~NumberFormat() +{ +} + +SharedNumberFormat::~SharedNumberFormat() { + delete ptr; +} + +// ------------------------------------- +// copy constructor + +NumberFormat::NumberFormat(const NumberFormat &source) +: Format(source) +{ + *this = source; +} + +// ------------------------------------- +// assignment operator + +NumberFormat& +NumberFormat::operator=(const NumberFormat& rhs) +{ + if (this != &rhs) + { + Format::operator=(rhs); + fGroupingUsed = rhs.fGroupingUsed; + fMaxIntegerDigits = rhs.fMaxIntegerDigits; + fMinIntegerDigits = rhs.fMinIntegerDigits; + fMaxFractionDigits = rhs.fMaxFractionDigits; + fMinFractionDigits = rhs.fMinFractionDigits; + fParseIntegerOnly = rhs.fParseIntegerOnly; + u_strncpy(fCurrency, rhs.fCurrency, 3); + fCurrency[3] = 0; + fLenient = rhs.fLenient; + fCapitalizationContext = rhs.fCapitalizationContext; + } + return *this; +} + +// ------------------------------------- + +bool +NumberFormat::operator==(const Format& that) const +{ + // Format::operator== guarantees this cast is safe + NumberFormat* other = (NumberFormat*)&that; + +#ifdef FMT_DEBUG + // This code makes it easy to determine why two format objects that should + // be equal aren't. + UBool first = true; + if (!Format::operator==(that)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("Format::!="); + } + if (!(fMaxIntegerDigits == other->fMaxIntegerDigits && + fMinIntegerDigits == other->fMinIntegerDigits)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("Integer digits !="); + } + if (!(fMaxFractionDigits == other->fMaxFractionDigits && + fMinFractionDigits == other->fMinFractionDigits)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("Fraction digits !="); + } + if (!(fGroupingUsed == other->fGroupingUsed)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("fGroupingUsed != "); + } + if (!(fParseIntegerOnly == other->fParseIntegerOnly)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("fParseIntegerOnly != "); + } + if (!(u_strcmp(fCurrency, other->fCurrency) == 0)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("fCurrency !="); + } + if (!(fLenient == other->fLenient)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("fLenient != "); + } + if (!(fCapitalizationContext == other->fCapitalizationContext)) { + if (first) { printf("[ "); first = false; } else { printf(", "); } + debug("fCapitalizationContext != "); + } + if (!first) { printf(" ]"); } +#endif + + return ((this == &that) || + ((Format::operator==(that) && + fMaxIntegerDigits == other->fMaxIntegerDigits && + fMinIntegerDigits == other->fMinIntegerDigits && + fMaxFractionDigits == other->fMaxFractionDigits && + fMinFractionDigits == other->fMinFractionDigits && + fGroupingUsed == other->fGroupingUsed && + fParseIntegerOnly == other->fParseIntegerOnly && + u_strcmp(fCurrency, other->fCurrency) == 0 && + fLenient == other->fLenient && + fCapitalizationContext == other->fCapitalizationContext))); +} + +// ------------------------------------- +// Default implementation sets unsupported error; subclasses should +// override. + +UnicodeString& +NumberFormat::format(double /* unused number */, + UnicodeString& toAppendTo, + FieldPositionIterator* /* unused posIter */, + UErrorCode& status) const +{ + if (!U_FAILURE(status)) { + status = U_UNSUPPORTED_ERROR; + } + return toAppendTo; +} + +// ------------------------------------- +// Default implementation sets unsupported error; subclasses should +// override. + +UnicodeString& +NumberFormat::format(int32_t /* unused number */, + UnicodeString& toAppendTo, + FieldPositionIterator* /* unused posIter */, + UErrorCode& status) const +{ + if (!U_FAILURE(status)) { + status = U_UNSUPPORTED_ERROR; + } + return toAppendTo; +} + +// ------------------------------------- +// Default implementation sets unsupported error; subclasses should +// override. + +UnicodeString& +NumberFormat::format(int64_t /* unused number */, + UnicodeString& toAppendTo, + FieldPositionIterator* /* unused posIter */, + UErrorCode& status) const +{ + if (!U_FAILURE(status)) { + status = U_UNSUPPORTED_ERROR; + } + return toAppendTo; +} + +// ------------------------------------------ +// These functions add the status code, just fall back to the non-status versions +UnicodeString& +NumberFormat::format(double number, + UnicodeString& appendTo, + FieldPosition& pos, + UErrorCode &status) const { + if(U_SUCCESS(status)) { + return format(number,appendTo,pos); + } else { + return appendTo; + } +} + +UnicodeString& +NumberFormat::format(int32_t number, + UnicodeString& appendTo, + FieldPosition& pos, + UErrorCode &status) const { + if(U_SUCCESS(status)) { + return format(number,appendTo,pos); + } else { + return appendTo; + } +} + +UnicodeString& +NumberFormat::format(int64_t number, + UnicodeString& appendTo, + FieldPosition& pos, + UErrorCode &status) const { + if(U_SUCCESS(status)) { + return format(number,appendTo,pos); + } else { + return appendTo; + } +} + + + +// ------------------------------------- +// Decimal Number format() default implementation +// Subclasses do not normally override this function, but rather the DigitList +// formatting functions.. +// The expected call chain from here is +// this function -> +// NumberFormat::format(Formattable -> +// DecimalFormat::format(DigitList +// +// Or, for subclasses of Formattable that do not know about DigitList, +// this Function -> +// NumberFormat::format(Formattable -> +// NumberFormat::format(DigitList -> +// XXXFormat::format(double + +UnicodeString& +NumberFormat::format(StringPiece decimalNum, + UnicodeString& toAppendTo, + FieldPositionIterator* fpi, + UErrorCode& status) const +{ + Formattable f; + f.setDecimalNumber(decimalNum, status); + format(f, toAppendTo, fpi, status); + return toAppendTo; +} + +/** + * +// Formats the number object and save the format +// result in the toAppendTo string buffer. + +// utility to save/restore state, used in two overloads +// of format(const Formattable&...) below. +* +* Old purpose of ArgExtractor was to avoid const. Not thread safe! +* +* keeping it around as a shim. +*/ +class ArgExtractor { + const Formattable* num; + char16_t save[4]; + UBool fWasCurrency; + + public: + ArgExtractor(const NumberFormat& nf, const Formattable& obj, UErrorCode& status); + ~ArgExtractor(); + + const Formattable* number() const; + const char16_t *iso() const; + UBool wasCurrency() const; +}; + +inline const Formattable* +ArgExtractor::number() const { + return num; +} + +inline UBool +ArgExtractor::wasCurrency() const { + return fWasCurrency; +} + +inline const char16_t * +ArgExtractor::iso() const { + return save; +} + +ArgExtractor::ArgExtractor(const NumberFormat& /*nf*/, const Formattable& obj, UErrorCode& /*status*/) + : num(&obj), fWasCurrency(false) { + + const UObject* o = obj.getObject(); // most commonly o==nullptr + const CurrencyAmount* amt; + if (o != nullptr && (amt = dynamic_cast<const CurrencyAmount*>(o)) != nullptr) { + // getISOCurrency() returns a pointer to internal storage, so we + // copy it to retain it across the call to setCurrency(). + //const char16_t* curr = amt->getISOCurrency(); + u_strcpy(save, amt->getISOCurrency()); + num = &amt->getNumber(); + fWasCurrency=true; + } else { + save[0]=0; + } +} + +ArgExtractor::~ArgExtractor() { +} + +UnicodeString& NumberFormat::format(const number::impl::DecimalQuantity &number, + UnicodeString& appendTo, + FieldPositionIterator* posIter, + UErrorCode& status) const { + // DecimalFormat overrides this function, and handles DigitList based big decimals. + // Other subclasses (ChoiceFormat) do not (yet) handle DigitLists, + // so this default implementation falls back to formatting decimal numbers as doubles. + if (U_FAILURE(status)) { + return appendTo; + } + double dnum = number.toDouble(); + format(dnum, appendTo, posIter, status); + return appendTo; +} + + + +UnicodeString& +NumberFormat::format(const number::impl::DecimalQuantity &number, + UnicodeString& appendTo, + FieldPosition& pos, + UErrorCode &status) const { + // DecimalFormat overrides this function, and handles DigitList based big decimals. + // Other subclasses (ChoiceFormat) do not (yet) handle DigitLists, + // so this default implementation falls back to formatting decimal numbers as doubles. + if (U_FAILURE(status)) { + return appendTo; + } + double dnum = number.toDouble(); + format(dnum, appendTo, pos, status); + return appendTo; +} + +UnicodeString& +NumberFormat::format(const Formattable& obj, + UnicodeString& appendTo, + FieldPosition& pos, + UErrorCode& status) const +{ + if (U_FAILURE(status)) return appendTo; + + ArgExtractor arg(*this, obj, status); + const Formattable *n = arg.number(); + const char16_t *iso = arg.iso(); + + if(arg.wasCurrency() && u_strcmp(iso, getCurrency())) { + // trying to format a different currency. + // Right now, we clone. + LocalPointer<NumberFormat> cloneFmt(this->clone()); + cloneFmt->setCurrency(iso, status); + // next line should NOT recurse, because n is numeric whereas obj was a wrapper around currency amount. + return cloneFmt->format(*n, appendTo, pos, status); + } + + if (n->isNumeric() && n->getDecimalQuantity() != nullptr) { + // Decimal Number. We will have a DigitList available if the value was + // set to a decimal number, or if the value originated with a parse. + // + // The default implementation for formatting a DigitList converts it + // to a double, and formats that, allowing formatting classes that don't + // know about DigitList to continue to operate as they had. + // + // DecimalFormat overrides the DigitList formatting functions. + format(*n->getDecimalQuantity(), appendTo, pos, status); + } else { + switch (n->getType()) { + case Formattable::kDouble: + format(n->getDouble(), appendTo, pos, status); + break; + case Formattable::kLong: + format(n->getLong(), appendTo, pos, status); + break; + case Formattable::kInt64: + format(n->getInt64(), appendTo, pos, status); + break; + default: + status = U_INVALID_FORMAT_ERROR; + break; + } + } + + return appendTo; +} + +// -------------------------------------x +// Formats the number object and save the format +// result in the toAppendTo string buffer. + +UnicodeString& +NumberFormat::format(const Formattable& obj, + UnicodeString& appendTo, + FieldPositionIterator* posIter, + UErrorCode& status) const +{ + if (U_FAILURE(status)) return appendTo; + + ArgExtractor arg(*this, obj, status); + const Formattable *n = arg.number(); + const char16_t *iso = arg.iso(); + + if(arg.wasCurrency() && u_strcmp(iso, getCurrency())) { + // trying to format a different currency. + // Right now, we clone. + LocalPointer<NumberFormat> cloneFmt(this->clone()); + cloneFmt->setCurrency(iso, status); + // next line should NOT recurse, because n is numeric whereas obj was a wrapper around currency amount. + return cloneFmt->format(*n, appendTo, posIter, status); + } + + if (n->isNumeric() && n->getDecimalQuantity() != nullptr) { + // Decimal Number + format(*n->getDecimalQuantity(), appendTo, posIter, status); + } else { + switch (n->getType()) { + case Formattable::kDouble: + format(n->getDouble(), appendTo, posIter, status); + break; + case Formattable::kLong: + format(n->getLong(), appendTo, posIter, status); + break; + case Formattable::kInt64: + format(n->getInt64(), appendTo, posIter, status); + break; + default: + status = U_INVALID_FORMAT_ERROR; + break; + } + } + + return appendTo; +} + +// ------------------------------------- + +UnicodeString& +NumberFormat::format(int64_t number, + UnicodeString& appendTo, + FieldPosition& pos) const +{ + // default so we don't introduce a new abstract method + return format((int32_t)number, appendTo, pos); +} + +// ------------------------------------- +// Parses the string and save the result object as well +// as the final parsed position. + +void +NumberFormat::parseObject(const UnicodeString& source, + Formattable& result, + ParsePosition& parse_pos) const +{ + parse(source, result, parse_pos); +} + +// ------------------------------------- +// Formats a double number and save the result in a string. + +UnicodeString& +NumberFormat::format(double number, UnicodeString& appendTo) const +{ + FieldPosition pos(FieldPosition::DONT_CARE); + return format(number, appendTo, pos); +} + +// ------------------------------------- +// Formats a long number and save the result in a string. + +UnicodeString& +NumberFormat::format(int32_t number, UnicodeString& appendTo) const +{ + FieldPosition pos(FieldPosition::DONT_CARE); + return format(number, appendTo, pos); +} + +// ------------------------------------- +// Formats a long number and save the result in a string. + +UnicodeString& +NumberFormat::format(int64_t number, UnicodeString& appendTo) const +{ + FieldPosition pos(FieldPosition::DONT_CARE); + return format(number, appendTo, pos); +} + +// ------------------------------------- +// Parses the text and save the result object. If the returned +// parse position is 0, that means the parsing failed, the status +// code needs to be set to failure. Ignores the returned parse +// position, otherwise. + +void +NumberFormat::parse(const UnicodeString& text, + Formattable& result, + UErrorCode& status) const +{ + if (U_FAILURE(status)) return; + + ParsePosition parsePosition(0); + parse(text, result, parsePosition); + if (parsePosition.getIndex() == 0) { + status = U_INVALID_FORMAT_ERROR; + } +} + +CurrencyAmount* NumberFormat::parseCurrency(const UnicodeString& text, + ParsePosition& pos) const { + // Default implementation only -- subclasses should override + Formattable parseResult; + int32_t start = pos.getIndex(); + parse(text, parseResult, pos); + if (pos.getIndex() != start) { + char16_t curr[4]; + UErrorCode ec = U_ZERO_ERROR; + getEffectiveCurrency(curr, ec); + if (U_SUCCESS(ec)) { + LocalPointer<CurrencyAmount> currAmt(new CurrencyAmount(parseResult, curr, ec), ec); + if (U_FAILURE(ec)) { + pos.setIndex(start); // indicate failure + } else { + return currAmt.orphan(); + } + } + } + return nullptr; +} + +// ------------------------------------- +// Sets to only parse integers. + +void +NumberFormat::setParseIntegerOnly(UBool value) +{ + fParseIntegerOnly = value; +} + +// ------------------------------------- +// Sets whether lenient parse is enabled. + +void +NumberFormat::setLenient(UBool enable) +{ + fLenient = enable; +} + +// ------------------------------------- +// Create a number style NumberFormat instance with the default locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createInstance(UErrorCode& status) +{ + return createInstance(Locale::getDefault(), UNUM_DECIMAL, status); +} + +// ------------------------------------- +// Create a number style NumberFormat instance with the inLocale locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createInstance(const Locale& inLocale, UErrorCode& status) +{ + return createInstance(inLocale, UNUM_DECIMAL, status); +} + +// ------------------------------------- +// Create a currency style NumberFormat instance with the default locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createCurrencyInstance(UErrorCode& status) +{ + return createCurrencyInstance(Locale::getDefault(), status); +} + +// ------------------------------------- +// Create a currency style NumberFormat instance with the inLocale locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createCurrencyInstance(const Locale& inLocale, UErrorCode& status) +{ + return createInstance(inLocale, UNUM_CURRENCY, status); +} + +// ------------------------------------- +// Create a percent style NumberFormat instance with the default locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createPercentInstance(UErrorCode& status) +{ + return createInstance(Locale::getDefault(), UNUM_PERCENT, status); +} + +// ------------------------------------- +// Create a percent style NumberFormat instance with the inLocale locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createPercentInstance(const Locale& inLocale, UErrorCode& status) +{ + return createInstance(inLocale, UNUM_PERCENT, status); +} + +// ------------------------------------- +// Create a scientific style NumberFormat instance with the default locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createScientificInstance(UErrorCode& status) +{ + return createInstance(Locale::getDefault(), UNUM_SCIENTIFIC, status); +} + +// ------------------------------------- +// Create a scientific style NumberFormat instance with the inLocale locale. + +NumberFormat* U_EXPORT2 +NumberFormat::createScientificInstance(const Locale& inLocale, UErrorCode& status) +{ + return createInstance(inLocale, UNUM_SCIENTIFIC, status); +} + +// ------------------------------------- + +const Locale* U_EXPORT2 +NumberFormat::getAvailableLocales(int32_t& count) +{ + return Locale::getAvailableLocales(count); +} + +// ------------------------------------------ +// +// Registration +// +//------------------------------------------- + +#if !UCONFIG_NO_SERVICE + +// ------------------------------------- + +class ICUNumberFormatFactory : public ICUResourceBundleFactory { +public: + virtual ~ICUNumberFormatFactory(); +protected: + virtual UObject* handleCreate(const Locale& loc, int32_t kind, const ICUService* /* service */, UErrorCode& status) const override { + return NumberFormat::makeInstance(loc, (UNumberFormatStyle)kind, status); + } +}; + +ICUNumberFormatFactory::~ICUNumberFormatFactory() {} + +// ------------------------------------- + +class NFFactory : public LocaleKeyFactory { +private: + NumberFormatFactory* _delegate; + Hashtable* _ids; + +public: + NFFactory(NumberFormatFactory* delegate) + : LocaleKeyFactory(delegate->visible() ? VISIBLE : INVISIBLE) + , _delegate(delegate) + , _ids(nullptr) + { + } + + virtual ~NFFactory(); + + virtual UObject* create(const ICUServiceKey& key, const ICUService* service, UErrorCode& status) const override + { + if (handlesKey(key, status)) { + const LocaleKey* lkey = dynamic_cast<const LocaleKey*>(&key); + U_ASSERT(lkey != nullptr); + Locale loc; + lkey->canonicalLocale(loc); + int32_t kind = lkey->kind(); + + UObject* result = _delegate->createFormat(loc, (UNumberFormatStyle)kind); + if (result == nullptr) { + result = service->getKey(const_cast<ICUServiceKey&>(key) /* cast away const */, nullptr, this, status); + } + return result; + } + return nullptr; + } + +protected: + /** + * Return the set of ids that this factory supports (visible or + * otherwise). This can be called often and might need to be + * cached if it is expensive to create. + */ + virtual const Hashtable* getSupportedIDs(UErrorCode& status) const override + { + if (U_SUCCESS(status)) { + if (!_ids) { + int32_t count = 0; + const UnicodeString * const idlist = _delegate->getSupportedIDs(count, status); + ((NFFactory*)this)->_ids = new Hashtable(status); /* cast away const */ + if (_ids) { + for (int i = 0; i < count; ++i) { + _ids->put(idlist[i], (void*)this, status); + } + } + } + return _ids; + } + return nullptr; + } +}; + +NFFactory::~NFFactory() +{ + delete _delegate; + delete _ids; +} + +class ICUNumberFormatService : public ICULocaleService { +public: + ICUNumberFormatService() + : ICULocaleService(UNICODE_STRING_SIMPLE("Number Format")) + { + UErrorCode status = U_ZERO_ERROR; + registerFactory(new ICUNumberFormatFactory(), status); + } + + virtual ~ICUNumberFormatService(); + + virtual UObject* cloneInstance(UObject* instance) const override { + return ((NumberFormat*)instance)->clone(); + } + + virtual UObject* handleDefault(const ICUServiceKey& key, UnicodeString* /* actualID */, UErrorCode& status) const override { + const LocaleKey* lkey = dynamic_cast<const LocaleKey*>(&key); + U_ASSERT(lkey != nullptr); + int32_t kind = lkey->kind(); + Locale loc; + lkey->currentLocale(loc); + return NumberFormat::makeInstance(loc, (UNumberFormatStyle)kind, status); + } + + virtual UBool isDefault() const override { + return countFactories() == 1; + } +}; + +ICUNumberFormatService::~ICUNumberFormatService() {} + +// ------------------------------------- + +static void U_CALLCONV initNumberFormatService() { + U_ASSERT(gService == nullptr); + ucln_i18n_registerCleanup(UCLN_I18N_NUMFMT, numfmt_cleanup); + gService = new ICUNumberFormatService(); +} + +static ICULocaleService* +getNumberFormatService() +{ + umtx_initOnce(gServiceInitOnce, &initNumberFormatService); + return gService; +} + +static UBool haveService() { + return !gServiceInitOnce.isReset() && (getNumberFormatService() != nullptr); +} + +// ------------------------------------- + +URegistryKey U_EXPORT2 +NumberFormat::registerFactory(NumberFormatFactory* toAdopt, UErrorCode& status) +{ + if (U_FAILURE(status)) { + delete toAdopt; + return nullptr; + } + ICULocaleService *service = getNumberFormatService(); + if (service) { + NFFactory *tempnnf = new NFFactory(toAdopt); + if (tempnnf != nullptr) { + return service->registerFactory(tempnnf, status); + } + } + status = U_MEMORY_ALLOCATION_ERROR; + return nullptr; +} + +// ------------------------------------- + +UBool U_EXPORT2 +NumberFormat::unregister(URegistryKey key, UErrorCode& status) +{ + if (U_FAILURE(status)) { + return false; + } + if (haveService()) { + return gService->unregister(key, status); + } else { + status = U_ILLEGAL_ARGUMENT_ERROR; + return false; + } +} + +// ------------------------------------- +StringEnumeration* U_EXPORT2 +NumberFormat::getAvailableLocales() +{ + ICULocaleService *service = getNumberFormatService(); + if (service) { + return service->getAvailableLocales(); + } + return nullptr; // no way to return error condition +} +#endif /* UCONFIG_NO_SERVICE */ +// ------------------------------------- + +enum { kKeyValueLenMax = 32 }; + +NumberFormat* +NumberFormat::internalCreateInstance(const Locale& loc, UNumberFormatStyle kind, UErrorCode& status) { + if (kind == UNUM_CURRENCY) { + char cfKeyValue[kKeyValueLenMax] = {0}; + UErrorCode kvStatus = U_ZERO_ERROR; + int32_t kLen = loc.getKeywordValue("cf", cfKeyValue, kKeyValueLenMax, kvStatus); + if (U_SUCCESS(kvStatus) && kLen > 0 && uprv_strcmp(cfKeyValue,"account")==0) { + kind = UNUM_CURRENCY_ACCOUNTING; + } + } +#if !UCONFIG_NO_SERVICE + if (haveService()) { + return (NumberFormat*)gService->get(loc, kind, status); + } +#endif + return makeInstance(loc, kind, status); +} + +NumberFormat* U_EXPORT2 +NumberFormat::createInstance(const Locale& loc, UNumberFormatStyle kind, UErrorCode& status) { + if (kind != UNUM_DECIMAL) { + return internalCreateInstance(loc, kind, status); + } + const SharedNumberFormat *shared = createSharedInstance(loc, kind, status); + if (U_FAILURE(status)) { + return nullptr; + } + NumberFormat *result = (*shared)->clone(); + shared->removeRef(); + if (result == nullptr) { + status = U_MEMORY_ALLOCATION_ERROR; + } + return result; +} + + +// ------------------------------------- +// Checks if the thousand/10 thousand grouping is used in the +// NumberFormat instance. + +UBool +NumberFormat::isGroupingUsed() const +{ + return fGroupingUsed; +} + +// ------------------------------------- +// Sets to use the thousand/10 thousand grouping in the +// NumberFormat instance. + +void +NumberFormat::setGroupingUsed(UBool newValue) +{ + fGroupingUsed = newValue; +} + +// ------------------------------------- +// Gets the maximum number of digits for the integral part for +// this NumberFormat instance. + +int32_t NumberFormat::getMaximumIntegerDigits() const +{ + return fMaxIntegerDigits; +} + +// ------------------------------------- +// Sets the maximum number of digits for the integral part for +// this NumberFormat instance. + +void +NumberFormat::setMaximumIntegerDigits(int32_t newValue) +{ + fMaxIntegerDigits = uprv_max(0, uprv_min(newValue, gDefaultMaxIntegerDigits)); + if(fMinIntegerDigits > fMaxIntegerDigits) + fMinIntegerDigits = fMaxIntegerDigits; +} + +// ------------------------------------- +// Gets the minimum number of digits for the integral part for +// this NumberFormat instance. + +int32_t +NumberFormat::getMinimumIntegerDigits() const +{ + return fMinIntegerDigits; +} + +// ------------------------------------- +// Sets the minimum number of digits for the integral part for +// this NumberFormat instance. + +void +NumberFormat::setMinimumIntegerDigits(int32_t newValue) +{ + fMinIntegerDigits = uprv_max(0, uprv_min(newValue, gDefaultMinIntegerDigits)); + if(fMinIntegerDigits > fMaxIntegerDigits) + fMaxIntegerDigits = fMinIntegerDigits; +} + +// ------------------------------------- +// Gets the maximum number of digits for the fractional part for +// this NumberFormat instance. + +int32_t +NumberFormat::getMaximumFractionDigits() const +{ + return fMaxFractionDigits; +} + +// ------------------------------------- +// Sets the maximum number of digits for the fractional part for +// this NumberFormat instance. + +void +NumberFormat::setMaximumFractionDigits(int32_t newValue) +{ + fMaxFractionDigits = uprv_max(0, uprv_min(newValue, gDefaultMaxIntegerDigits)); + if(fMaxFractionDigits < fMinFractionDigits) + fMinFractionDigits = fMaxFractionDigits; +} + +// ------------------------------------- +// Gets the minimum number of digits for the fractional part for +// this NumberFormat instance. + +int32_t +NumberFormat::getMinimumFractionDigits() const +{ + return fMinFractionDigits; +} + +// ------------------------------------- +// Sets the minimum number of digits for the fractional part for +// this NumberFormat instance. + +void +NumberFormat::setMinimumFractionDigits(int32_t newValue) +{ + fMinFractionDigits = uprv_max(0, uprv_min(newValue, gDefaultMinIntegerDigits)); + if (fMaxFractionDigits < fMinFractionDigits) + fMaxFractionDigits = fMinFractionDigits; +} + +// ------------------------------------- + +void NumberFormat::setCurrency(const char16_t* theCurrency, UErrorCode& ec) { + if (U_FAILURE(ec)) { + return; + } + if (theCurrency) { + u_strncpy(fCurrency, theCurrency, 3); + fCurrency[3] = 0; + } else { + fCurrency[0] = 0; + } +} + +const char16_t* NumberFormat::getCurrency() const { + return fCurrency; +} + +void NumberFormat::getEffectiveCurrency(char16_t* result, UErrorCode& ec) const { + const char16_t* c = getCurrency(); + if (*c != 0) { + u_strncpy(result, c, 3); + result[3] = 0; + } else { + const char* loc = getLocaleID(ULOC_VALID_LOCALE, ec); + if (loc == nullptr) { + loc = uloc_getDefault(); + } + ucurr_forLocale(loc, result, 4, &ec); + } +} + +//---------------------------------------------------------------------- + + +void NumberFormat::setContext(UDisplayContext value, UErrorCode& status) +{ + if (U_FAILURE(status)) + return; + if ( (UDisplayContextType)((uint32_t)value >> 8) == UDISPCTX_TYPE_CAPITALIZATION ) { + fCapitalizationContext = value; + } else { + status = U_ILLEGAL_ARGUMENT_ERROR; + } +} + + +UDisplayContext NumberFormat::getContext(UDisplayContextType type, UErrorCode& status) const +{ + if (U_FAILURE(status)) + return (UDisplayContext)0; + if (type != UDISPCTX_TYPE_CAPITALIZATION) { + status = U_ILLEGAL_ARGUMENT_ERROR; + return (UDisplayContext)0; + } + return fCapitalizationContext; +} + + +// ------------------------------------- +// Creates the NumberFormat instance of the specified style (number, currency, +// or percent) for the desired locale. + +static void U_CALLCONV nscacheInit() { + U_ASSERT(NumberingSystem_cache == nullptr); + ucln_i18n_registerCleanup(UCLN_I18N_NUMFMT, numfmt_cleanup); + UErrorCode status = U_ZERO_ERROR; + NumberingSystem_cache = uhash_open(uhash_hashLong, + uhash_compareLong, + nullptr, + &status); + if (U_FAILURE(status)) { + // Number Format code will run with no cache if creation fails. + NumberingSystem_cache = nullptr; + return; + } + uhash_setValueDeleter(NumberingSystem_cache, deleteNumberingSystem); +} + +template<> U_I18N_API +const SharedNumberFormat *LocaleCacheKey<SharedNumberFormat>::createObject( + const void * /*unused*/, UErrorCode &status) const { + const char *localeId = fLoc.getName(); + NumberFormat *nf = NumberFormat::internalCreateInstance( + localeId, UNUM_DECIMAL, status); + if (U_FAILURE(status)) { + return nullptr; + } + SharedNumberFormat *result = new SharedNumberFormat(nf); + if (result == nullptr) { + status = U_MEMORY_ALLOCATION_ERROR; + delete nf; + return nullptr; + } + result->addRef(); + return result; +} + +const SharedNumberFormat* U_EXPORT2 +NumberFormat::createSharedInstance(const Locale& loc, UNumberFormatStyle kind, UErrorCode& status) { + if (U_FAILURE(status)) { + return nullptr; + } + if (kind != UNUM_DECIMAL) { + status = U_UNSUPPORTED_ERROR; + return nullptr; + } + const SharedNumberFormat *result = nullptr; + UnifiedCache::getByLocale(loc, result, status); + return result; +} + +UBool +NumberFormat::isStyleSupported(UNumberFormatStyle style) { + return gLastResortNumberPatterns[style] != nullptr; +} + +NumberFormat* +NumberFormat::makeInstance(const Locale& desiredLocale, + UNumberFormatStyle style, + UErrorCode& status) { + return makeInstance(desiredLocale, style, false, status); +} + +NumberFormat* +NumberFormat::makeInstance(const Locale& desiredLocale, + UNumberFormatStyle style, + UBool mustBeDecimalFormat, + UErrorCode& status) { + if (U_FAILURE(status)) return nullptr; + + if (style < 0 || style >= UNUM_FORMAT_STYLE_COUNT) { + status = U_ILLEGAL_ARGUMENT_ERROR; + return nullptr; + } + + // For the purposes of general number formatting, UNUM_NUMBERING_SYSTEM should behave the same + // was as UNUM_DECIMAL. In both cases, you get either a DecimalFormat or a RuleBasedNumberFormat + // depending on the locale's numbering system (either the default one for the locale or a specific + // one specified by using the "@numbers=" or "-u-nu-" parameter in the locale ID. + if (style == UNUM_NUMBERING_SYSTEM) { + style = UNUM_DECIMAL; + } + + // Some styles are not supported. This is a result of merging + // the @draft ICU 4.2 NumberFormat::EStyles into the long-existing UNumberFormatStyle. + // Ticket #8503 is for reviewing/fixing/merging the two relevant implementations: + // this one and unum_open(). + // The UNUM_PATTERN_ styles are not supported here + // because this method does not take a pattern string. + if (!isStyleSupported(style)) { + status = U_UNSUPPORTED_ERROR; + return nullptr; + } + +#if U_PLATFORM_USES_ONLY_WIN32_API + if (!mustBeDecimalFormat) { + char buffer[8]; + int32_t count = desiredLocale.getKeywordValue("compat", buffer, sizeof(buffer), status); + + // if the locale has "@compat=host", create a host-specific NumberFormat + if (U_SUCCESS(status) && count > 0 && uprv_strcmp(buffer, "host") == 0) { + UBool curr = true; + + switch (style) { + case UNUM_DECIMAL: + curr = false; + // fall-through + U_FALLTHROUGH; + + case UNUM_CURRENCY: + case UNUM_CURRENCY_ISO: // do not support plural formatting here + case UNUM_CURRENCY_PLURAL: + case UNUM_CURRENCY_ACCOUNTING: + case UNUM_CASH_CURRENCY: + case UNUM_CURRENCY_STANDARD: + { + LocalPointer<Win32NumberFormat> f(new Win32NumberFormat(desiredLocale, curr, status), status); + if (U_SUCCESS(status)) { + return f.orphan(); + } + } + break; + default: + break; + } + } + } +#endif + // Use numbering system cache hashtable + umtx_initOnce(gNSCacheInitOnce, &nscacheInit); + + // Get cached numbering system + LocalPointer<NumberingSystem> ownedNs; + NumberingSystem *ns = nullptr; + if (NumberingSystem_cache != nullptr) { + // TODO: Bad hash key usage, see ticket #8504. + int32_t hashKey = desiredLocale.hashCode(); + + static UMutex nscacheMutex; + Mutex lock(&nscacheMutex); + ns = (NumberingSystem *)uhash_iget(NumberingSystem_cache, hashKey); + if (ns == nullptr) { + ns = NumberingSystem::createInstance(desiredLocale,status); + uhash_iput(NumberingSystem_cache, hashKey, (void*)ns, &status); + } + } else { + ownedNs.adoptInstead(NumberingSystem::createInstance(desiredLocale,status)); + ns = ownedNs.getAlias(); + } + + // check results of getting a numbering system + if (U_FAILURE(status)) { + return nullptr; + } + + if (mustBeDecimalFormat && ns->isAlgorithmic()) { + status = U_UNSUPPORTED_ERROR; + return nullptr; + } + + LocalPointer<DecimalFormatSymbols> symbolsToAdopt; + UnicodeString pattern; + LocalUResourceBundlePointer ownedResource(ures_open(nullptr, desiredLocale.getName(), &status)); + if (U_FAILURE(status)) { + return nullptr; + } + else { + // Loads the decimal symbols of the desired locale. + symbolsToAdopt.adoptInsteadAndCheckErrorCode(new DecimalFormatSymbols(desiredLocale, status), status); + if (U_FAILURE(status)) { + return nullptr; + } + + // Load the pattern from data using the common library function + const char16_t* patternPtr = number::impl::utils::getPatternForStyle( + desiredLocale, + ns->getName(), + gFormatCldrStyles[style], + status); + pattern = UnicodeString(true, patternPtr, -1); + } + if (U_FAILURE(status)) { + return nullptr; + } + if(style==UNUM_CURRENCY || style == UNUM_CURRENCY_ISO || style == UNUM_CURRENCY_ACCOUNTING + || style == UNUM_CASH_CURRENCY || style == UNUM_CURRENCY_STANDARD){ + const char16_t* currPattern = symbolsToAdopt->getCurrencyPattern(); + if(currPattern!=nullptr){ + pattern.setTo(currPattern, u_strlen(currPattern)); + } + } + + LocalPointer<NumberFormat> f; + if (ns->isAlgorithmic()) { + UnicodeString nsDesc; + UnicodeString nsRuleSetGroup; + UnicodeString nsRuleSetName; + Locale nsLoc; + URBNFRuleSetTag desiredRulesType = URBNF_NUMBERING_SYSTEM; + + nsDesc.setTo(ns->getDescription()); + int32_t firstSlash = nsDesc.indexOf(gSlash); + int32_t lastSlash = nsDesc.lastIndexOf(gSlash); + if ( lastSlash > firstSlash ) { + CharString nsLocID; + + nsLocID.appendInvariantChars(nsDesc.tempSubString(0, firstSlash), status); + nsRuleSetGroup.setTo(nsDesc,firstSlash+1,lastSlash-firstSlash-1); + nsRuleSetName.setTo(nsDesc,lastSlash+1); + + nsLoc = Locale::createFromName(nsLocID.data()); + + UnicodeString SpelloutRules = UNICODE_STRING_SIMPLE("SpelloutRules"); + if ( nsRuleSetGroup.compare(SpelloutRules) == 0 ) { + desiredRulesType = URBNF_SPELLOUT; + } + } else { + nsLoc = desiredLocale; + nsRuleSetName.setTo(nsDesc); + } + + RuleBasedNumberFormat *r = new RuleBasedNumberFormat(desiredRulesType,nsLoc,status); + if (r == nullptr) { + status = U_MEMORY_ALLOCATION_ERROR; + return nullptr; + } + r->setDefaultRuleSet(nsRuleSetName,status); + f.adoptInstead(r); + } else { + // replace single currency sign in the pattern with double currency sign + // if the style is UNUM_CURRENCY_ISO + if (style == UNUM_CURRENCY_ISO) { + pattern.findAndReplace(UnicodeString(true, gSingleCurrencySign, 1), + UnicodeString(true, gDoubleCurrencySign, 2)); + } + + // "new DecimalFormat()" does not adopt the symbols argument if its memory allocation fails. + // So we can't use adoptInsteadAndCheckErrorCode as we need to know if the 'new' failed. + DecimalFormatSymbols *syms = symbolsToAdopt.getAlias(); + LocalPointer<DecimalFormat> df(new DecimalFormat(pattern, syms, style, status)); + + if (df.isValid()) { + // if the DecimalFormat object was successfully new'ed, then it will own symbolsToAdopt, even if the status is a failure. + symbolsToAdopt.orphan(); + } + else { + status = U_MEMORY_ALLOCATION_ERROR; + } + + if (U_FAILURE(status)) { + return nullptr; + } + + // if it is cash currency style, setCurrencyUsage with usage + if (style == UNUM_CASH_CURRENCY){ + df->setCurrencyUsage(UCURR_USAGE_CASH, &status); + } + + if (U_FAILURE(status)) { + return nullptr; + } + + f.adoptInstead(df.orphan()); + } + + f->setLocaleIDs(ures_getLocaleByType(ownedResource.getAlias(), ULOC_VALID_LOCALE, &status), + ures_getLocaleByType(ownedResource.getAlias(), ULOC_ACTUAL_LOCALE, &status)); + if (U_FAILURE(status)) { + return nullptr; + } + return f.orphan(); +} + +/** + * Get the rounding mode. + * @return A rounding mode + */ +NumberFormat::ERoundingMode NumberFormat::getRoundingMode() const { + // Default value. ICU4J throws an exception and we can't change this API. + return NumberFormat::ERoundingMode::kRoundUnnecessary; +} + +/** + * Set the rounding mode. This has no effect unless the rounding + * increment is greater than zero. + * @param roundingMode A rounding mode + */ +void NumberFormat::setRoundingMode(NumberFormat::ERoundingMode /*roundingMode*/) { + // No-op ICU4J throws an exception, and we can't change this API. +} + +U_NAMESPACE_END + +#endif /* #if !UCONFIG_NO_FORMATTING */ + +//eof |