1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 *******************************************************************************
5 * Copyright (C) 1997-2015, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 *******************************************************************************
13 #include "unicode/rbnf.h"
17 #include "unicode/utypes.h"
18 #include "unicode/uobject.h"
19 #include "unicode/unistr.h"
31 class RuleBasedNumberFormat;
34 class NFRule : public UMemory {
39 kNegativeNumberRule = -1,
40 kImproperFractionRule = -2,
41 kProperFractionRule = -3,
48 static void makeRules(UnicodeString& definition,
50 const NFRule* predecessor,
51 const RuleBasedNumberFormat* rbnf,
55 NFRule(const RuleBasedNumberFormat* rbnf, const UnicodeString &ruleText, UErrorCode &status);
58 UBool operator==(const NFRule& rhs) const;
59 UBool operator!=(const NFRule& rhs) const { return !operator==(rhs); }
61 ERuleType getType() const { return (ERuleType)(baseValue <= kNoBase ? (ERuleType)baseValue : kOtherRule); }
62 void setType(ERuleType ruleType) { baseValue = (int32_t)ruleType; }
64 int64_t getBaseValue() const { return baseValue; }
65 void setBaseValue(int64_t value, UErrorCode& status);
67 UChar getDecimalPoint() const { return decimalPoint; }
69 double getDivisor() const { return uprv_pow(radix, exponent); }
71 void doFormat(int64_t number, UnicodeString& toAppendTo, int32_t pos, int32_t recursionCount, UErrorCode& status) const;
72 void doFormat(double number, UnicodeString& toAppendTo, int32_t pos, int32_t recursionCount, UErrorCode& status) const;
74 UBool doParse(const UnicodeString& text,
78 Formattable& result) const;
80 UBool shouldRollBack(double number) const;
82 void _appendRuleText(UnicodeString& result) const;
84 int32_t findTextLenient(const UnicodeString& str, const UnicodeString& key,
85 int32_t startingAt, int32_t* resultCount) const;
87 void setDecimalFormatSymbols(const DecimalFormatSymbols &newSymbols, UErrorCode& status);
90 void parseRuleDescriptor(UnicodeString& descriptor, UErrorCode& status);
91 void extractSubstitutions(const NFRuleSet* ruleSet, const UnicodeString &ruleText, const NFRule* predecessor, UErrorCode& status);
92 NFSubstitution* extractSubstitution(const NFRuleSet* ruleSet, const NFRule* predecessor, UErrorCode& status);
94 int16_t expectedExponent() const;
95 int32_t indexOfAnyRulePrefix() const;
96 double matchToDelimiter(const UnicodeString& text, int32_t startPos, double baseValue,
97 const UnicodeString& delimiter, ParsePosition& pp, const NFSubstitution* sub,
98 double upperBound) const;
99 void stripPrefix(UnicodeString& text, const UnicodeString& prefix, ParsePosition& pp) const;
101 int32_t prefixLength(const UnicodeString& str, const UnicodeString& prefix, UErrorCode& status) const;
102 UBool allIgnorable(const UnicodeString& str, UErrorCode& status) const;
103 int32_t findText(const UnicodeString& str, const UnicodeString& key,
104 int32_t startingAt, int32_t* resultCount) const;
111 UnicodeString ruleText;
112 NFSubstitution* sub1;
113 NFSubstitution* sub2;
114 const RuleBasedNumberFormat* formatter;
115 const PluralFormat* rulePatternFormat;
117 NFRule(const NFRule &other); // forbid copying of this class
118 NFRule &operator=(const NFRule &other); // forbid copying of this class