number_multiplier.h (1826B)
1 // © 2018 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 4 #include "unicode/utypes.h" 5 6 #if !UCONFIG_NO_FORMATTING 7 #ifndef __SOURCE_NUMBER_MULTIPLIER_H__ 8 #define __SOURCE_NUMBER_MULTIPLIER_H__ 9 10 #include "numparse_types.h" 11 #include "number_decimfmtprops.h" 12 13 U_NAMESPACE_BEGIN 14 namespace number::impl { 15 16 /** 17 * Wraps a {@link Multiplier} for use in the number formatting pipeline. 18 */ 19 // Exported as U_I18N_API for tests 20 class U_I18N_API MultiplierFormatHandler : public MicroPropsGenerator, public UMemory { 21 public: 22 MultiplierFormatHandler() = default; // WARNING: Leaves object in an unusable state; call setAndChain() 23 24 void setAndChain(const Scale& multiplier, const MicroPropsGenerator* parent); 25 26 void processQuantity(DecimalQuantity& quantity, MicroProps& micros, 27 UErrorCode& status) const override; 28 29 private: 30 Scale fMultiplier; 31 const MicroPropsGenerator *fParent; 32 }; 33 34 35 /** Gets a Scale from a DecimalFormatProperties. In Java, defined in RoundingUtils.java */ 36 static inline Scale scaleFromProperties(const DecimalFormatProperties& properties) { 37 int32_t magnitudeMultiplier = properties.magnitudeMultiplier + properties.multiplierScale; 38 int32_t arbitraryMultiplier = properties.multiplier; 39 if (magnitudeMultiplier != 0 && arbitraryMultiplier != 1) { 40 return Scale::byDoubleAndPowerOfTen(arbitraryMultiplier, magnitudeMultiplier); 41 } else if (magnitudeMultiplier != 0) { 42 return Scale::powerOfTen(magnitudeMultiplier); 43 } else if (arbitraryMultiplier != 1) { 44 return Scale::byDouble(arbitraryMultiplier); 45 } else { 46 return Scale::none(); 47 } 48 } 49 50 } // namespace number::impl 51 U_NAMESPACE_END 52 53 #endif //__SOURCE_NUMBER_MULTIPLIER_H__ 54 #endif /* #if !UCONFIG_NO_FORMATTING */