ICU 69.1  69.1
plurrule.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2008-2015, International Business Machines Corporation and
6 * others. All Rights Reserved.
7 *******************************************************************************
8 *
9 *
10 * File PLURRULE.H
11 *
12 * Modification History:*
13 * Date Name Description
14 *
15 ********************************************************************************
16 */
17 
18 #ifndef PLURRULE
19 #define PLURRULE
20 
21 #include "unicode/utypes.h"
22 
23 #if U_SHOW_CPLUSPLUS_API
24 
30 #if !UCONFIG_NO_FORMATTING
31 
32 #include "unicode/format.h"
33 #include "unicode/upluralrules.h"
34 #ifndef U_HIDE_INTERNAL_API
35 #include "unicode/numfmt.h"
36 #endif /* U_HIDE_INTERNAL_API */
37 
43 #define UPLRULES_NO_UNIQUE_VALUE ((double)-0.00123456777)
44 
45 U_NAMESPACE_BEGIN
46 
47 class Hashtable;
48 class IFixedDecimal;
49 class FixedDecimal;
50 class RuleChain;
51 class PluralRuleParser;
52 class PluralKeywordEnumeration;
53 class AndConstraint;
54 class SharedPluralRules;
55 class StandardPluralRanges;
56 
57 namespace number {
58 class FormattedNumber;
59 class FormattedNumberRange;
60 namespace impl {
61 class UFormattedNumberRangeData;
62 }
63 }
64 
207 public:
208 
216  PluralRules(UErrorCode& status);
217 
222  PluralRules(const PluralRules& other);
223 
228  virtual ~PluralRules();
229 
234  PluralRules* clone() const;
235 
240  PluralRules& operator=(const PluralRules&);
241 
252  static PluralRules* U_EXPORT2 createRules(const UnicodeString& description,
253  UErrorCode& status);
254 
263  static PluralRules* U_EXPORT2 createDefaultRules(UErrorCode& status);
264 
281  static PluralRules* U_EXPORT2 forLocale(const Locale& locale, UErrorCode& status);
282 
299  static PluralRules* U_EXPORT2 forLocale(const Locale& locale, UPluralType type, UErrorCode& status);
300 
301 #ifndef U_HIDE_INTERNAL_API
302 
307  static StringEnumeration* U_EXPORT2 getAvailableLocales(UErrorCode &status);
308 
315  static UBool hasOverride(const Locale &locale);
316 
322  static PluralRules* U_EXPORT2 internalForLocale(const Locale& locale, UPluralType type, UErrorCode& status);
323 
331  static const SharedPluralRules* U_EXPORT2 createSharedInstance(
332  const Locale& locale, UPluralType type, UErrorCode& status);
333 
334 
335 #endif /* U_HIDE_INTERNAL_API */
336 
346  UnicodeString select(int32_t number) const;
347 
357  UnicodeString select(double number) const;
358 
374  UnicodeString select(const number::FormattedNumber& number, UErrorCode& status) const;
375 
376 #ifndef U_HIDE_DRAFT_API
377 
393  UnicodeString select(const number::FormattedNumberRange& range, UErrorCode& status) const;
394 #endif // U_HIDE_DRAFT_API
395 
396 #ifndef U_HIDE_INTERNAL_API
397 
400  UnicodeString select(const IFixedDecimal &number) const;
404  UnicodeString select(const number::impl::UFormattedNumberRangeData* urange, UErrorCode& status) const;
405 #endif /* U_HIDE_INTERNAL_API */
406 
417  StringEnumeration* getKeywords(UErrorCode& status) const;
418 
419 #ifndef U_HIDE_DEPRECATED_API
420 
430  double getUniqueKeywordValue(const UnicodeString& keyword);
431 
452  int32_t getAllKeywordValues(const UnicodeString &keyword,
453  double *dest, int32_t destCapacity,
454  UErrorCode& status);
455 #endif /* U_HIDE_DEPRECATED_API */
456 
475  int32_t getSamples(const UnicodeString &keyword,
476  double *dest, int32_t destCapacity,
477  UErrorCode& status);
478 
479 #ifndef U_HIDE_INTERNAL_API
480 
500  int32_t getSamples(const UnicodeString &keyword,
501  FixedDecimal *dest, int32_t destCapacity,
502  UErrorCode& status);
503 #endif /* U_HIDE_INTERNAL_API */
504 
514  UBool isKeyword(const UnicodeString& keyword) const;
515 
516 
523  UnicodeString getKeywordOther() const;
524 
525 #ifndef U_HIDE_INTERNAL_API
526 
530  UnicodeString getRules() const;
531 #endif /* U_HIDE_INTERNAL_API */
532 
541  virtual UBool operator==(const PluralRules& other) const;
542 
551  UBool operator!=(const PluralRules& other) const {return !operator==(other);}
552 
553 
560  static UClassID U_EXPORT2 getStaticClassID(void);
561 
567  virtual UClassID getDynamicClassID() const;
568 
569 
570 private:
571  RuleChain *mRules;
572  StandardPluralRanges *mStandardPluralRanges;
573 
574  PluralRules(); // default constructor not implemented
575  void parseDescription(const UnicodeString& ruleData, UErrorCode &status);
576  int32_t getNumberValue(const UnicodeString& token) const;
577  UnicodeString getRuleFromResource(const Locale& locale, UPluralType type, UErrorCode& status);
578  RuleChain *rulesForKeyword(const UnicodeString &keyword) const;
579  PluralRules *clone(UErrorCode& status) const;
580 
585  UErrorCode mInternalStatus;
586 
587  friend class PluralRuleParser;
588 };
589 
590 U_NAMESPACE_END
591 
592 #endif /* #if !UCONFIG_NO_FORMATTING */
593 
594 #endif /* U_SHOW_CPLUSPLUS_API */
595 
596 #endif // _PLURRULE
597 //eof
virtual UClassID getDynamicClassID() const
ICU4C "poor man's RTTI", returns a UClassID for the actual ICU class.
The result of a number range formatting operation.
U_EXPORT UBool operator==(const StringPiece &x, const StringPiece &y)
Global operator == for StringPiece.
void * UClassID
UClassID is used to identify classes without using the compiler's RTTI.
Definition: uobject.h:96
Base class for 'pure' C++ implementations of uenum api.
Definition: strenum.h:61
Defines rules for mapping non-negative numeric values onto a small set of keywords.
Definition: plurrule.h:206
C++ API: Base class for all formats.
#define U_I18N_API
Set to export library symbols from inside the i18n library, and to import them from outside...
Definition: utypes.h:301
C API: Plural rules, select plural keywords for numeric values.
UBool operator!=(const PluralRules &other) const
Compares the inequality of two PluralRules objects.
Definition: plurrule.h:551
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
UPluralType
Type of plurals and PluralRules.
Definition: upluralrules.h:58
Basic definitions for ICU, for both C and C++ APIs.
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:295
The result of a number formatting operation.
C++ API: Compatibility APIs for number formatting.
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:269
A Locale object represents a specific geographical, political, or cultural region.
Definition: locid.h:195