1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/nfrule.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,114 @@
1.4 +/*
1.5 +*******************************************************************************
1.6 +* Copyright (C) 1997-2008, International Business Machines
1.7 +* Corporation and others. All Rights Reserved.
1.8 +*******************************************************************************
1.9 +*/
1.10 +
1.11 +#ifndef NFRULE_H
1.12 +#define NFRULE_H
1.13 +
1.14 +#include "unicode/rbnf.h"
1.15 +
1.16 +#if U_HAVE_RBNF
1.17 +
1.18 +#include "unicode/utypes.h"
1.19 +#include "unicode/uobject.h"
1.20 +#include "unicode/unistr.h"
1.21 +#include "putilimp.h"
1.22 +
1.23 +U_NAMESPACE_BEGIN
1.24 +
1.25 +class FieldPosition;
1.26 +class Formattable;
1.27 +class NFRuleList;
1.28 +class NFRuleSet;
1.29 +class NFSubstitution;
1.30 +class ParsePosition;
1.31 +class RuleBasedNumberFormat;
1.32 +class UnicodeString;
1.33 +
1.34 +class NFRule : public UMemory {
1.35 +public:
1.36 +
1.37 + enum ERuleType {
1.38 + kNoBase = 0,
1.39 + kNegativeNumberRule = -1,
1.40 + kImproperFractionRule = -2,
1.41 + kProperFractionRule = -3,
1.42 + kMasterRule = -4,
1.43 + kOtherRule = -5
1.44 + };
1.45 +
1.46 + static void makeRules(UnicodeString& definition,
1.47 + const NFRuleSet* ruleSet,
1.48 + const NFRule* predecessor,
1.49 + const RuleBasedNumberFormat* rbnf,
1.50 + NFRuleList& ruleList,
1.51 + UErrorCode& status);
1.52 +
1.53 + NFRule(const RuleBasedNumberFormat* rbnf);
1.54 + ~NFRule();
1.55 +
1.56 + UBool operator==(const NFRule& rhs) const;
1.57 + UBool operator!=(const NFRule& rhs) const { return !operator==(rhs); }
1.58 +
1.59 + ERuleType getType() const { return (ERuleType)(baseValue <= kNoBase ? (ERuleType)baseValue : kOtherRule); }
1.60 + void setType(ERuleType ruleType) { baseValue = (int32_t)ruleType; }
1.61 +
1.62 + int64_t getBaseValue() const { return baseValue; }
1.63 + void setBaseValue(int64_t value, UErrorCode& status);
1.64 +
1.65 + double getDivisor() const { return uprv_pow(radix, exponent); }
1.66 +
1.67 + void doFormat(int64_t number, UnicodeString& toAppendTo, int32_t pos) const;
1.68 + void doFormat(double number, UnicodeString& toAppendTo, int32_t pos) const;
1.69 +
1.70 + UBool doParse(const UnicodeString& text,
1.71 + ParsePosition& pos,
1.72 + UBool isFractional,
1.73 + double upperBound,
1.74 + Formattable& result) const;
1.75 +
1.76 + UBool shouldRollBack(double number) const;
1.77 +
1.78 + void _appendRuleText(UnicodeString& result) const;
1.79 +
1.80 +private:
1.81 + void parseRuleDescriptor(UnicodeString& descriptor, UErrorCode& status);
1.82 + void extractSubstitutions(const NFRuleSet* ruleSet, const NFRule* predecessor, const RuleBasedNumberFormat* rbnf, UErrorCode& status);
1.83 + NFSubstitution* extractSubstitution(const NFRuleSet* ruleSet, const NFRule* predecessor, const RuleBasedNumberFormat* rbnf, UErrorCode& status);
1.84 +
1.85 + int16_t expectedExponent() const;
1.86 + int32_t indexOfAny(const UChar* const strings[]) const;
1.87 + double matchToDelimiter(const UnicodeString& text, int32_t startPos, double baseValue,
1.88 + const UnicodeString& delimiter, ParsePosition& pp, const NFSubstitution* sub,
1.89 + double upperBound) const;
1.90 + void stripPrefix(UnicodeString& text, const UnicodeString& prefix, ParsePosition& pp) const;
1.91 +
1.92 + int32_t prefixLength(const UnicodeString& str, const UnicodeString& prefix, UErrorCode& status) const;
1.93 + UBool allIgnorable(const UnicodeString& str, UErrorCode& status) const;
1.94 + int32_t findText(const UnicodeString& str, const UnicodeString& key,
1.95 + int32_t startingAt, int32_t* resultCount) const;
1.96 +
1.97 +private:
1.98 + int64_t baseValue;
1.99 + int32_t radix;
1.100 + int16_t exponent;
1.101 + UnicodeString ruleText;
1.102 + NFSubstitution* sub1;
1.103 + NFSubstitution* sub2;
1.104 + const RuleBasedNumberFormat* formatter;
1.105 +
1.106 + NFRule(const NFRule &other); // forbid copying of this class
1.107 + NFRule &operator=(const NFRule &other); // forbid copying of this class
1.108 +};
1.109 +
1.110 +U_NAMESPACE_END
1.111 +
1.112 +/* U_HAVE_RBNF */
1.113 +#endif
1.114 +
1.115 +// NFRULE_H
1.116 +#endif
1.117 +
