The Tor Browser: intl/icu/source/i18n/nfrule.h@fc2d59ddac77

     1 /*

     2 *******************************************************************************

     3 * Copyright (C) 1997-2008, International Business Machines

     4 * Corporation and others. All Rights Reserved.

     5 *******************************************************************************

     6 */

     8 #ifndef NFRULE_H

     9 #define NFRULE_H

    11 #include "unicode/rbnf.h"

    13 #if U_HAVE_RBNF

    15 #include "unicode/utypes.h"

    16 #include "unicode/uobject.h"

    17 #include "unicode/unistr.h"

    18 #include "putilimp.h"

    20 U_NAMESPACE_BEGIN

    22 class FieldPosition;

    23 class Formattable;

    24 class NFRuleList;

    25 class NFRuleSet;

    26 class NFSubstitution;

    27 class ParsePosition;

    28 class RuleBasedNumberFormat;

    29 class UnicodeString;

    31 class NFRule : public UMemory {

    32 public:

    34     enum ERuleType {

    35         kNoBase = 0,

    36         kNegativeNumberRule = -1,

    37         kImproperFractionRule = -2,

    38         kProperFractionRule = -3,

    39         kMasterRule = -4,

    40         kOtherRule = -5

    41     };

    43     static void makeRules(UnicodeString& definition,

    44                           const NFRuleSet* ruleSet,

    45                           const NFRule* predecessor,

    46                           const RuleBasedNumberFormat* rbnf,

    47                           NFRuleList& ruleList,

    48                           UErrorCode& status);

    50     NFRule(const RuleBasedNumberFormat* rbnf);

    51     ~NFRule();

    53     UBool operator==(const NFRule& rhs) const;

    54     UBool operator!=(const NFRule& rhs) const { return !operator==(rhs); }

    56     ERuleType getType() const { return (ERuleType)(baseValue <= kNoBase ? (ERuleType)baseValue : kOtherRule); }

    57     void setType(ERuleType ruleType) { baseValue = (int32_t)ruleType; }

    59     int64_t getBaseValue() const { return baseValue; }

    60     void setBaseValue(int64_t value, UErrorCode& status);

    62     double getDivisor() const { return uprv_pow(radix, exponent); }

    64     void doFormat(int64_t number, UnicodeString& toAppendTo, int32_t pos) const;

    65     void doFormat(double  number, UnicodeString& toAppendTo, int32_t pos) const;

    67     UBool doParse(const UnicodeString& text,

    68                   ParsePosition& pos,

    69                   UBool isFractional,

    70                   double upperBound,

    71                   Formattable& result) const;

    73     UBool shouldRollBack(double number) const;

    75     void _appendRuleText(UnicodeString& result) const;

    77 private:

    78     void parseRuleDescriptor(UnicodeString& descriptor, UErrorCode& status);

    79     void extractSubstitutions(const NFRuleSet* ruleSet, const NFRule* predecessor, const RuleBasedNumberFormat* rbnf, UErrorCode& status);

    80     NFSubstitution* extractSubstitution(const NFRuleSet* ruleSet, const NFRule* predecessor, const RuleBasedNumberFormat* rbnf, UErrorCode& status);

    82     int16_t expectedExponent() const;

    83     int32_t indexOfAny(const UChar* const strings[]) const;

    84     double matchToDelimiter(const UnicodeString& text, int32_t startPos, double baseValue,

    85                             const UnicodeString& delimiter, ParsePosition& pp, const NFSubstitution* sub,

    86                             double upperBound) const;

    87     void stripPrefix(UnicodeString& text, const UnicodeString& prefix, ParsePosition& pp) const;

    89     int32_t prefixLength(const UnicodeString& str, const UnicodeString& prefix, UErrorCode& status) const;

    90     UBool allIgnorable(const UnicodeString& str, UErrorCode& status) const;

    91     int32_t findText(const UnicodeString& str, const UnicodeString& key,

    92                      int32_t startingAt, int32_t* resultCount) const;

    94 private:

    95     int64_t baseValue;

    96     int32_t radix;

    97     int16_t exponent;

    98     UnicodeString ruleText;

    99     NFSubstitution* sub1;

   100     NFSubstitution* sub2;

   101     const RuleBasedNumberFormat* formatter;

   103     NFRule(const NFRule &other); // forbid copying of this class

   104     NFRule &operator=(const NFRule &other); // forbid copying of this class

   105 };

   107 U_NAMESPACE_END

   109 /* U_HAVE_RBNF */

   110 #endif

   112 // NFRULE_H

   113 #endif

The Tor Browser / file revision

intl/icu/source/i18n/nfrule.h@fc2d59ddac77

intl/icu/source/i18n/nfrule.h