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// © 2022 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html #ifndef __SIMPLENUMBERFORMATTERH__ #define __SIMPLENUMBERFORMATTERH__ #include "unicode/utypes.h" #if U_SHOW_CPLUSPLUS_API #if !UCONFIG_NO_FORMATTING #include "unicode/dcfmtsym.h" #include "unicode/usimplenumberformatter.h" #include "unicode/formattednumber.h" /** * \file * \brief C++ API: Simple number formatting focused on low memory and code size. * * These functions render locale-aware number strings but without the bells and whistles found in * other number formatting APIs such as those in numberformatter.h, like units and currencies. * * <pre> * SimpleNumberFormatter snf = SimpleNumberFormatter::forLocale("de-CH", status); * FormattedNumber result = snf.formatInt64(-1000007, status); * assertEquals("", u"-1’000’007", result.toString(status)); * </pre> */ U_NAMESPACE_BEGIN namespace number { // icu::number namespace impl { class UFormattedNumberData; struct SimpleMicroProps; class AdoptingSignumModifierStore; } // icu::number::impl #ifndef U_HIDE_DRAFT_API /** * An input type for SimpleNumberFormatter. * * This class is mutable and not intended for public subclassing. This class is movable but not copyable. * * @draft ICU 73 */ class U_I18N_API SimpleNumber : public UMemory { public: /** * Creates a SimpleNumber for an integer. * * @draft ICU 73 */ static SimpleNumber forInt64(int64_t value, UErrorCode& status); /** * Changes the value of the SimpleNumber by a power of 10. * * This function immediately mutates the inner value. * * @draft ICU 73 */ void multiplyByPowerOfTen(int32_t power, UErrorCode& status); /** * Rounds the value currently stored in the SimpleNumber to the given power of 10. * * This function immediately mutates the inner value. * * @draft ICU 73 */ void roundTo(int32_t power, UNumberFormatRoundingMode roundingMode, UErrorCode& status); /** * Truncates the most significant digits to the given maximum number of integer digits. * * This function immediately mutates the inner value. * * @draft ICU 73 */ void truncateStart(uint32_t maximumIntegerDigits, UErrorCode& status); /** * Pads the beginning of the number with zeros up to the given minimum number of integer digits. * * This setting is applied upon formatting the number. * * @draft ICU 73 */ void setMinimumIntegerDigits(uint32_t minimumIntegerDigits, UErrorCode& status); /** * Pads the end of the number with zeros up to the given minimum number of fraction digits. * * This setting is applied upon formatting the number. * * @draft ICU 73 */ void setMinimumFractionDigits(uint32_t minimumFractionDigits, UErrorCode& status); /** * Sets the sign of the number: an explicit plus sign, explicit minus sign, or no sign. * * This setting is applied upon formatting the number. * * NOTE: This does not support accounting sign notation. * * @draft ICU 73 */ void setSign(USimpleNumberSign sign, UErrorCode& status); /** * Creates a new, empty SimpleNumber that does not contain a value. * * NOTE: This number will fail to format; use forInt64() to create a SimpleNumber with a value. * * @draft ICU 73 */ SimpleNumber() = default; /** * Destruct this SimpleNumber, cleaning up any memory it might own. * * @draft ICU 73 */ ~SimpleNumber() { cleanup(); } /** * SimpleNumber move constructor. * * @draft ICU 73 */ SimpleNumber(SimpleNumber&& other) noexcept { fData = other.fData; fSign = other.fSign; other.fData = nullptr; } /** * SimpleNumber move assignment. * * @draft ICU 73 */ SimpleNumber& operator=(SimpleNumber&& other) noexcept { cleanup(); fData = other.fData; fSign = other.fSign; other.fData = nullptr; return *this; } private: SimpleNumber(impl::UFormattedNumberData* data, UErrorCode& status); SimpleNumber(const SimpleNumber&) = delete; SimpleNumber& operator=(const SimpleNumber&) = delete; void cleanup(); impl::UFormattedNumberData* fData = nullptr; USimpleNumberSign fSign = UNUM_SIMPLE_NUMBER_NO_SIGN; friend class SimpleNumberFormatter; }; /** * A special NumberFormatter focused on smaller binary size and memory use. * * SimpleNumberFormatter is capable of basic number formatting, including grouping separators, * sign display, and rounding. It is not capable of currencies, compact notation, or units. * * This class is immutable and not intended for public subclassing. This class is movable but not copyable. * * @draft ICU 73 */ class U_I18N_API SimpleNumberFormatter : public UMemory { public: /** * Creates a new SimpleNumberFormatter with all locale defaults. * * @draft ICU 73 */ static SimpleNumberFormatter forLocale( const icu::Locale &locale, UErrorCode &status); /** * Creates a new SimpleNumberFormatter, overriding the grouping strategy. * * @draft ICU 73 */ static SimpleNumberFormatter forLocaleAndGroupingStrategy( const icu::Locale &locale, UNumberGroupingStrategy groupingStrategy, UErrorCode &status); /** * Creates a new SimpleNumberFormatter, overriding the grouping strategy and symbols. * * IMPORTANT: For efficiency, this function borrows the symbols. The symbols MUST remain valid * for the lifetime of the SimpleNumberFormatter. * * @draft ICU 73 */ static SimpleNumberFormatter forLocaleAndSymbolsAndGroupingStrategy( const icu::Locale &locale, const DecimalFormatSymbols &symbols, UNumberGroupingStrategy groupingStrategy, UErrorCode &status); /** * Formats a value using this SimpleNumberFormatter. * * The SimpleNumber argument is "consumed". A new SimpleNumber object should be created for * every formatting operation. * * @draft ICU 73 */ FormattedNumber format(SimpleNumber value, UErrorCode &status) const; /** * Formats an integer using this SimpleNumberFormatter. * * For more control over the formatting, use SimpleNumber. * * @draft ICU 73 */ FormattedNumber formatInt64(int64_t value, UErrorCode &status) const { return format(SimpleNumber::forInt64(value, status), status); } #ifndef U_HIDE_INTERNAL_API /** * Run the formatter with the internal types. * @internal */ void formatImpl(impl::UFormattedNumberData* data, USimpleNumberSign sign, UErrorCode& status) const; #endif // U_HIDE_INTERNAL_API /** * Destruct this SimpleNumberFormatter, cleaning up any memory it might own. * * @draft ICU 73 */ ~SimpleNumberFormatter() { cleanup(); } /** * Creates a shell, initialized but non-functional SimpleNumberFormatter. * * @draft ICU 73 */ SimpleNumberFormatter() = default; /** * SimpleNumberFormatter: Move constructor. * * @draft ICU 73 */ SimpleNumberFormatter(SimpleNumberFormatter&& other) noexcept { fGroupingStrategy = other.fGroupingStrategy; fOwnedSymbols = other.fOwnedSymbols; fMicros = other.fMicros; fPatternModifier = other.fPatternModifier; other.fOwnedSymbols = nullptr; other.fMicros = nullptr; other.fPatternModifier = nullptr; } /** * SimpleNumberFormatter: Move assignment. * * @draft ICU 73 */ SimpleNumberFormatter& operator=(SimpleNumberFormatter&& other) noexcept { cleanup(); fGroupingStrategy = other.fGroupingStrategy; fOwnedSymbols = other.fOwnedSymbols; fMicros = other.fMicros; fPatternModifier = other.fPatternModifier; other.fOwnedSymbols = nullptr; other.fMicros = nullptr; other.fPatternModifier = nullptr; return *this; } private: void initialize( const icu::Locale &locale, const DecimalFormatSymbols &symbols, UNumberGroupingStrategy groupingStrategy, UErrorCode &status); void cleanup(); SimpleNumberFormatter(const SimpleNumberFormatter&) = delete; SimpleNumberFormatter& operator=(const SimpleNumberFormatter&) = delete; UNumberGroupingStrategy fGroupingStrategy = UNUM_GROUPING_AUTO; // Owned Pointers: DecimalFormatSymbols* fOwnedSymbols = nullptr; // can be empty impl::SimpleMicroProps* fMicros = nullptr; impl::AdoptingSignumModifierStore* fPatternModifier = nullptr; }; #endif // U_HIDE_DRAFT_API } // namespace number U_NAMESPACE_END #endif /* #if !UCONFIG_NO_FORMATTING */ #endif /* U_SHOW_CPLUSPLUS_API */ #endif // __SIMPLENUMBERFORMATTERH__
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