1 /* 2 ******************************************************************************* 3 * Copyright (C) 1997-2014, International Business Machines 4 * Corporation and others. All Rights Reserved. 5 ******************************************************************************* 6 */ 7 8 #ifndef NFRULE_H 9 #define NFRULE_H 10 11 #include "unicode/rbnf.h" 12 13 #if U_HAVE_RBNF 14 15 #include "unicode/utypes.h" 16 #include "unicode/uobject.h" 17 #include "unicode/unistr.h" 18 #include "putilimp.h" 19 20 U_NAMESPACE_BEGIN 21 22 class FieldPosition; 23 class Formattable; 24 class NFRuleList; 25 class NFRuleSet; 26 class NFSubstitution; 27 class ParsePosition; 28 class PluralFormat; 29 class RuleBasedNumberFormat; 30 class UnicodeString; 31 32 class NFRule : public UMemory { 33 public: 34 35 enum ERuleType { 36 kNoBase = 0, 37 kNegativeNumberRule = -1, 38 kImproperFractionRule = -2, 39 kProperFractionRule = -3, 40 kMasterRule = -4, 41 kOtherRule = -5 42 }; 43 44 static void makeRules(UnicodeString& definition, 45 const NFRuleSet* ruleSet, 46 const NFRule* predecessor, 47 const RuleBasedNumberFormat* rbnf, 48 NFRuleList& ruleList, 49 UErrorCode& status); 50 51 NFRule(const RuleBasedNumberFormat* rbnf); 52 ~NFRule(); 53 54 UBool operator==(const NFRule& rhs) const; 55 UBool operator!=(const NFRule& rhs) const { return !operator==(rhs); } 56 57 ERuleType getType() const { return (ERuleType)(baseValue <= kNoBase ? (ERuleType)baseValue : kOtherRule); } 58 void setType(ERuleType ruleType) { baseValue = (int32_t)ruleType; } 59 60 int64_t getBaseValue() const { return baseValue; } 61 void setBaseValue(int64_t value, UErrorCode& status); 62 63 double getDivisor() const { return uprv_pow(radix, exponent); } 64 65 void doFormat(int64_t number, UnicodeString& toAppendTo, int32_t pos, UErrorCode& status) const; 66 void doFormat(double number, UnicodeString& toAppendTo, int32_t pos, UErrorCode& status) const; 67 68 UBool doParse(const UnicodeString& text, 69 ParsePosition& pos, 70 UBool isFractional, 71 double upperBound, 72 Formattable& result) const; 73 74 UBool shouldRollBack(double number) const; 75 76 void _appendRuleText(UnicodeString& result) const; 77 78 int32_t findTextLenient(const UnicodeString& str, const UnicodeString& key, 79 int32_t startingAt, int32_t* resultCount) const; 80 81 private: 82 void parseRuleDescriptor(UnicodeString& descriptor, UErrorCode& status); 83 void extractSubstitutions(const NFRuleSet* ruleSet, const UnicodeString &ruleText, const NFRule* predecessor, UErrorCode& status); 84 NFSubstitution* extractSubstitution(const NFRuleSet* ruleSet, const NFRule* predecessor, UErrorCode& status); 85 86 int16_t expectedExponent() const; 87 int32_t indexOfAny(const UChar* const strings[]) const; 88 double matchToDelimiter(const UnicodeString& text, int32_t startPos, double baseValue, 89 const UnicodeString& delimiter, ParsePosition& pp, const NFSubstitution* sub, 90 double upperBound) const; 91 void stripPrefix(UnicodeString& text, const UnicodeString& prefix, ParsePosition& pp) const; 92 93 int32_t prefixLength(const UnicodeString& str, const UnicodeString& prefix, UErrorCode& status) const; 94 UBool allIgnorable(const UnicodeString& str, UErrorCode& status) const; 95 int32_t findText(const UnicodeString& str, const UnicodeString& key, 96 int32_t startingAt, int32_t* resultCount) const; 97 98 private: 99 int64_t baseValue; 100 int32_t radix; 101 int16_t exponent; 102 UnicodeString ruleText; 103 NFSubstitution* sub1; 104 NFSubstitution* sub2; 105 const RuleBasedNumberFormat* formatter; 106 const PluralFormat* rulePatternFormat; 107 108 NFRule(const NFRule &other); // forbid copying of this class 109 NFRule &operator=(const NFRule &other); // forbid copying of this class 110 }; 111 112 U_NAMESPACE_END 113 114 /* U_HAVE_RBNF */ 115 #endif 116 117 // NFRULE_H 118 #endif 119 120
