Victor Chang | ce4bf3c | 2021-01-19 16:34:24 +0000 | [diff] [blame] | 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 { |
| 21 | namespace impl { |
| 22 | class UFormattedNumberRangeData; |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | class StandardPluralRanges : public UMemory { |
| 27 | public: |
| 28 | /** Create a new StandardPluralRanges for the given locale */ |
| 29 | static StandardPluralRanges forLocale(const Locale& locale, UErrorCode& status); |
| 30 | |
| 31 | /** Explicit copy constructor */ |
| 32 | StandardPluralRanges copy(UErrorCode& status) const; |
| 33 | |
| 34 | /** Create an object (called on an rvalue) */ |
| 35 | LocalPointer<StandardPluralRanges> toPointer(UErrorCode& status) && noexcept; |
| 36 | |
| 37 | /** Select rule based on the first and second forms */ |
| 38 | StandardPlural::Form resolve(StandardPlural::Form first, StandardPlural::Form second) const; |
| 39 | |
| 40 | /** Used for data loading. */ |
| 41 | void addPluralRange( |
| 42 | StandardPlural::Form first, |
| 43 | StandardPlural::Form second, |
| 44 | StandardPlural::Form result); |
| 45 | |
| 46 | /** Used for data loading. */ |
| 47 | void setCapacity(int32_t length, UErrorCode& status); |
| 48 | |
| 49 | private: |
| 50 | struct StandardPluralRangeTriple { |
| 51 | StandardPlural::Form first; |
| 52 | StandardPlural::Form second; |
| 53 | StandardPlural::Form result; |
| 54 | }; |
| 55 | |
| 56 | // TODO: An array is simple here, but it results in linear lookup time. |
| 57 | // Certain locales have 20-30 entries in this list. |
| 58 | // Consider changing to a smarter data structure. |
| 59 | typedef MaybeStackArray<StandardPluralRangeTriple, 3> PluralRangeTriples; |
| 60 | PluralRangeTriples fTriples; |
| 61 | int32_t fTriplesLen = 0; |
| 62 | }; |
| 63 | |
| 64 | U_NAMESPACE_END |
| 65 | |
| 66 | #endif /* #if !UCONFIG_NO_FORMATTING */ |
| 67 | #endif //__PLURALRANGES_H__ |