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rbnf.h

00001 /*
00002 *******************************************************************************
00003 * Copyright (C) 1997-2003, International Business Machines Corporation and others.
00004 * All Rights Reserved.
00005 *******************************************************************************
00006 */
00007 
00008 #ifndef RBNF_H
00009 #define RBNF_H
00010 
00011 #include "unicode/utypes.h"
00012 
00013 #if defined(U_INT64_T_UNAVAILABLE) || UCONFIG_NO_FORMATTING
00014 #define U_HAVE_RBNF 0
00015 #else
00016 #define U_HAVE_RBNF 1
00017 
00018 #include "unicode/coll.h"
00019 #include "unicode/dcfmtsym.h"
00020 #include "unicode/fmtable.h"
00021 #include "unicode/locid.h"
00022 #include "unicode/numfmt.h"
00023 #include "unicode/unistr.h"
00024 
00025 U_NAMESPACE_BEGIN
00026 
00027 class NFRuleSet;
00028 
00030 enum URBNFRuleSetTag {
00031     URBNF_SPELLOUT,
00032     URBNF_ORDINAL,
00033     URBNF_DURATION,
00034     URBNF_COUNT
00035 };
00036 
00037 #if UCONFIG_NO_COLLATION
00038 class Collator;
00039 #endif
00040 
00465 class U_I18N_API RuleBasedNumberFormat : public NumberFormat {
00466 public:
00467 
00468   //-----------------------------------------------------------------------
00469   // constructors
00470   //-----------------------------------------------------------------------
00471 
00487   RuleBasedNumberFormat(const UnicodeString& rules, const Locale& locale, 
00488                         UParseError& perror, UErrorCode& status);
00489 
00503   RuleBasedNumberFormat(URBNFRuleSetTag tag, const Locale& locale, UErrorCode& status);
00504 
00505   //-----------------------------------------------------------------------
00506   // boilerplate
00507   //-----------------------------------------------------------------------
00508 
00514   RuleBasedNumberFormat(const RuleBasedNumberFormat& rhs);
00515 
00521   RuleBasedNumberFormat& operator=(const RuleBasedNumberFormat& rhs);
00522 
00527   virtual ~RuleBasedNumberFormat();
00528 
00535   virtual Format* clone(void) const;
00536 
00544   virtual UBool operator==(const Format& other) const;
00545 
00546 //-----------------------------------------------------------------------
00547 // public API functions
00548 //-----------------------------------------------------------------------
00549 
00555   virtual UnicodeString getRules() const;
00556 
00564   virtual UnicodeString getRuleSetName(int32_t index) const;
00565 
00571   virtual int32_t getNumberOfRuleSetNames() const;
00572 
00581   virtual UnicodeString& format(int32_t number,
00582                                 UnicodeString& toAppendTo,
00583                                 FieldPosition& pos) const;
00584 
00593   virtual UnicodeString& format(int64_t number,
00594                                 UnicodeString& toAppendTo,
00595                                 FieldPosition& pos) const;
00604   virtual UnicodeString& format(double number,
00605                                 UnicodeString& toAppendTo,
00606                                 FieldPosition& pos) const;
00607 
00619   virtual UnicodeString& format(int32_t number,
00620                                 const UnicodeString& ruleSetName,
00621                                 UnicodeString& toAppendTo,
00622                                 FieldPosition& pos,
00623                                 UErrorCode& status) const;
00635   virtual UnicodeString& format(int64_t number,
00636                                 const UnicodeString& ruleSetName,
00637                                 UnicodeString& toAppendTo,
00638                                 FieldPosition& pos,
00639                                 UErrorCode& status) const;
00651   virtual UnicodeString& format(double number,
00652                                 const UnicodeString& ruleSetName,
00653                                 UnicodeString& toAppendTo,
00654                                 FieldPosition& pos,
00655                                 UErrorCode& status) const;
00656 
00666   virtual UnicodeString& format(const Formattable& obj,
00667                                 UnicodeString& toAppendTo,
00668                                 FieldPosition& pos,
00669                                 UErrorCode& status) const;
00678   UnicodeString& format(const Formattable& obj,
00679                         UnicodeString& result,
00680                         UErrorCode& status) const;
00681 
00689    UnicodeString& format(double number,
00690                          UnicodeString& output) const;
00691 
00699    UnicodeString& format(int32_t number,
00700                          UnicodeString& output) const;
00701 
00716   virtual void parse(const UnicodeString& text,
00717                      Formattable& result,
00718                      ParsePosition& parsePosition) const;
00719 
00720   
00728   virtual inline void parse(const UnicodeString& text,
00729                       Formattable& result,
00730                       UErrorCode& status) const;
00731 
00732 #if !UCONFIG_NO_COLLATION
00733 
00767   virtual void setLenient(UBool enabled);
00768 
00776   virtual inline UBool isLenient(void) const;
00777 
00778 #endif
00779 
00788   virtual void setDefaultRuleSet(const UnicodeString& ruleSetName, UErrorCode& status);
00789 
00790 public:
00796     static UClassID getStaticClassID(void);
00797 
00803     virtual UClassID getDynamicClassID(void) const;
00804 
00805 private:
00806     RuleBasedNumberFormat(); // default constructor not implemented
00807 
00808     void init(const UnicodeString& rules, UParseError& perror, UErrorCode& status);
00809     void dispose();
00810     void stripWhitespace(UnicodeString& src);
00811     void initDefaultRuleSet();
00812     void format(double number, NFRuleSet& ruleSet);
00813     NFRuleSet* findRuleSet(const UnicodeString& name, UErrorCode& status) const;
00814 
00815     /* friend access */
00816     friend class NFSubstitution;
00817     friend class NFRule;
00818     friend class FractionalPartSubstitution;
00819 
00820     inline NFRuleSet * getDefaultRuleSet() const;
00821     Collator * getCollator() const;
00822     DecimalFormatSymbols * getDecimalFormatSymbols() const;
00823 
00824 private:
00825     NFRuleSet **ruleSets;
00826     NFRuleSet *defaultRuleSet;
00827     Locale locale;
00828     Collator* collator;
00829     DecimalFormatSymbols* decimalFormatSymbols;
00830     UBool lenient;
00831     UnicodeString* lenientParseRules;
00832 };
00833 
00834 // ---------------
00835 
00836 inline UnicodeString&
00837 RuleBasedNumberFormat::format(const Formattable& obj,
00838                               UnicodeString& result,
00839                               UErrorCode& status) const
00840 {
00841     // Don't use Format:: - use immediate base class only,
00842     // in case immediate base modifies behavior later.
00843     // dlf - the above comment is bogus, if there were a reason to modify
00844     // it, it would be virtual, and there's no reason because it is
00845     // a one-line macro in NumberFormat anyway, just like this one.
00846     return NumberFormat::format(obj, result, status);
00847 }
00848 
00849 inline UnicodeString&
00850 RuleBasedNumberFormat::format(double number, UnicodeString& output) const {
00851     FieldPosition pos(0);
00852     return format(number, output, pos);
00853 }
00854 
00855 inline UnicodeString&
00856 RuleBasedNumberFormat::format(int32_t number, UnicodeString& output) const {
00857     FieldPosition pos(0);
00858     return format(number, output, pos);
00859 }
00860 
00861 inline void
00862 RuleBasedNumberFormat::parse(const UnicodeString& text, Formattable& result, UErrorCode& status) const
00863 {
00864     NumberFormat::parse(text, result, status);
00865 }
00866 
00867 #if !UCONFIG_NO_COLLATION
00868 
00869 inline UBool 
00870 RuleBasedNumberFormat::isLenient(void) const { 
00871     return lenient; 
00872 }
00873 
00874 #endif
00875 
00876 inline NFRuleSet* 
00877 RuleBasedNumberFormat::getDefaultRuleSet() const { 
00878     return defaultRuleSet; 
00879 }
00880 
00881 U_NAMESPACE_END
00882 
00883 /* U_HAVE_RBNF */
00884 #endif
00885 
00886 /* RBNF_H */
00887 #endif

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