pluralranges.h (1906B)
1 // © 2018 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 4 #ifndef __PLURALRANGES_H__ 5 #define __PLURALRANGES_H__ 6 7 #include "unicode/utypes.h" 8 9 #if !UCONFIG_NO_FORMATTING 10 11 #include "unicode/uobject.h" 12 #include "unicode/locid.h" 13 #include "unicode/plurrule.h" 14 #include "standardplural.h" 15 #include "cmemory.h" 16 17 U_NAMESPACE_BEGIN 18 19 // Forward declarations 20 namespace number::impl { 21 class UFormattedNumberRangeData; 22 } 23 24 class StandardPluralRanges : public UMemory { 25 public: 26 /** Create a new StandardPluralRanges for the given locale */ 27 static StandardPluralRanges forLocale(const Locale& locale, UErrorCode& status); 28 29 /** Explicit copy constructor */ 30 StandardPluralRanges copy(UErrorCode& status) const; 31 32 /** Create an object (called on an rvalue) */ 33 LocalPointer<StandardPluralRanges> toPointer(UErrorCode& status) && noexcept; 34 35 /** Select rule based on the first and second forms */ 36 StandardPlural::Form resolve(StandardPlural::Form first, StandardPlural::Form second) const; 37 38 /** Used for data loading. */ 39 void addPluralRange( 40 StandardPlural::Form first, 41 StandardPlural::Form second, 42 StandardPlural::Form result); 43 44 /** Used for data loading. */ 45 void setCapacity(int32_t length, UErrorCode& status); 46 47 private: 48 struct StandardPluralRangeTriple { 49 StandardPlural::Form first; 50 StandardPlural::Form second; 51 StandardPlural::Form result; 52 }; 53 54 // TODO: An array is simple here, but it results in linear lookup time. 55 // Certain locales have 20-30 entries in this list. 56 // Consider changing to a smarter data structure. 57 typedef MaybeStackArray<StandardPluralRangeTriple, 3> PluralRangeTriples; 58 PluralRangeTriples fTriples; 59 int32_t fTriplesLen = 0; 60 }; 61 62 U_NAMESPACE_END 63 64 #endif /* #if !UCONFIG_NO_FORMATTING */ 65 #endif //__PLURALRANGES_H__