| /* |
| ******************************************************************************* |
| * Copyright (C) 2007-2015, International Business Machines Corporation and |
| * others. All Rights Reserved. |
| ******************************************************************************* |
| * |
| * File PLURRULE_IMPL.H |
| * |
| ******************************************************************************* |
| */ |
| |
| |
| #ifndef PLURRULE_IMPL |
| #define PLURRULE_IMPL |
| |
| // Internal definitions for the PluralRules implementation. |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| #include "unicode/format.h" |
| #include "unicode/locid.h" |
| #include "unicode/parseerr.h" |
| #include "unicode/ures.h" |
| #include "uvector.h" |
| #include "hash.h" |
| |
| class PluralRulesTest; |
| |
| U_NAMESPACE_BEGIN |
| |
| class AndConstraint; |
| class RuleChain; |
| class DigitInterval; |
| class VisibleDigits; |
| |
| static const UChar DOT = ((UChar)0x002E); |
| static const UChar SINGLE_QUOTE = ((UChar)0x0027); |
| static const UChar SLASH = ((UChar)0x002F); |
| static const UChar BACKSLASH = ((UChar)0x005C); |
| static const UChar SPACE = ((UChar)0x0020); |
| static const UChar EXCLAMATION = ((UChar)0x0021); |
| static const UChar QUOTATION_MARK = ((UChar)0x0022); |
| static const UChar NUMBER_SIGN = ((UChar)0x0023); |
| static const UChar PERCENT_SIGN = ((UChar)0x0025); |
| static const UChar ASTERISK = ((UChar)0x002A); |
| static const UChar COMMA = ((UChar)0x002C); |
| static const UChar HYPHEN = ((UChar)0x002D); |
| static const UChar U_ZERO = ((UChar)0x0030); |
| static const UChar U_ONE = ((UChar)0x0031); |
| static const UChar U_TWO = ((UChar)0x0032); |
| static const UChar U_THREE = ((UChar)0x0033); |
| static const UChar U_FOUR = ((UChar)0x0034); |
| static const UChar U_FIVE = ((UChar)0x0035); |
| static const UChar U_SIX = ((UChar)0x0036); |
| static const UChar U_SEVEN = ((UChar)0x0037); |
| static const UChar U_EIGHT = ((UChar)0x0038); |
| static const UChar U_NINE = ((UChar)0x0039); |
| static const UChar COLON = ((UChar)0x003A); |
| static const UChar SEMI_COLON = ((UChar)0x003B); |
| static const UChar EQUALS = ((UChar)0x003D); |
| static const UChar AT = ((UChar)0x0040); |
| static const UChar CAP_A = ((UChar)0x0041); |
| static const UChar CAP_B = ((UChar)0x0042); |
| static const UChar CAP_R = ((UChar)0x0052); |
| static const UChar CAP_Z = ((UChar)0x005A); |
| static const UChar LOWLINE = ((UChar)0x005F); |
| static const UChar LEFTBRACE = ((UChar)0x007B); |
| static const UChar RIGHTBRACE = ((UChar)0x007D); |
| static const UChar TILDE = ((UChar)0x007E); |
| static const UChar ELLIPSIS = ((UChar)0x2026); |
| |
| static const UChar LOW_A = ((UChar)0x0061); |
| static const UChar LOW_B = ((UChar)0x0062); |
| static const UChar LOW_C = ((UChar)0x0063); |
| static const UChar LOW_D = ((UChar)0x0064); |
| static const UChar LOW_E = ((UChar)0x0065); |
| static const UChar LOW_F = ((UChar)0x0066); |
| static const UChar LOW_G = ((UChar)0x0067); |
| static const UChar LOW_H = ((UChar)0x0068); |
| static const UChar LOW_I = ((UChar)0x0069); |
| static const UChar LOW_J = ((UChar)0x006a); |
| static const UChar LOW_K = ((UChar)0x006B); |
| static const UChar LOW_L = ((UChar)0x006C); |
| static const UChar LOW_M = ((UChar)0x006D); |
| static const UChar LOW_N = ((UChar)0x006E); |
| static const UChar LOW_O = ((UChar)0x006F); |
| static const UChar LOW_P = ((UChar)0x0070); |
| static const UChar LOW_Q = ((UChar)0x0071); |
| static const UChar LOW_R = ((UChar)0x0072); |
| static const UChar LOW_S = ((UChar)0x0073); |
| static const UChar LOW_T = ((UChar)0x0074); |
| static const UChar LOW_U = ((UChar)0x0075); |
| static const UChar LOW_V = ((UChar)0x0076); |
| static const UChar LOW_W = ((UChar)0x0077); |
| static const UChar LOW_Y = ((UChar)0x0079); |
| static const UChar LOW_Z = ((UChar)0x007A); |
| |
| |
| static const int32_t PLURAL_RANGE_HIGH = 0x7fffffff; |
| |
| enum tokenType { |
| none, |
| tNumber, |
| tComma, |
| tSemiColon, |
| tSpace, |
| tColon, |
| tAt, // '@' |
| tDot, |
| tDot2, |
| tEllipsis, |
| tKeyword, |
| tAnd, |
| tOr, |
| tMod, // 'mod' or '%' |
| tNot, // 'not' only. |
| tIn, // 'in' only. |
| tEqual, // '=' only. |
| tNotEqual, // '!=' |
| tTilde, |
| tWithin, |
| tIs, |
| tVariableN, |
| tVariableI, |
| tVariableF, |
| tVariableV, |
| tVariableT, |
| tDecimal, |
| tInteger, |
| tEOF |
| }; |
| |
| |
| class PluralRuleParser: public UMemory { |
| public: |
| PluralRuleParser(); |
| virtual ~PluralRuleParser(); |
| |
| void parse(const UnicodeString &rules, PluralRules *dest, UErrorCode &status); |
| void getNextToken(UErrorCode &status); |
| void checkSyntax(UErrorCode &status); |
| static int32_t getNumberValue(const UnicodeString &token); |
| |
| private: |
| static tokenType getKeyType(const UnicodeString& token, tokenType type); |
| static tokenType charType(UChar ch); |
| static UBool isValidKeyword(const UnicodeString& token); |
| |
| const UnicodeString *ruleSrc; // The rules string. |
| int32_t ruleIndex; // String index in the input rules, the current parse position. |
| UnicodeString token; // Token most recently scanned. |
| tokenType type; |
| tokenType prevType; |
| |
| // The items currently being parsed & built. |
| // Note: currentChain may not be the last RuleChain in the |
| // list because the "other" chain is forced to the end. |
| AndConstraint *curAndConstraint; |
| RuleChain *currentChain; |
| |
| int32_t rangeLowIdx; // Indices in the UVector of ranges of the |
| int32_t rangeHiIdx; // low and hi values currently being parsed. |
| |
| enum EParseState { |
| kKeyword, |
| kExpr, |
| kValue, |
| kRangeList, |
| kSamples |
| }; |
| |
| }; |
| |
| /** |
| * class FixedDecimal serves to communicate the properties |
| * of a formatted number from a decimal formatter to PluralRules::select() |
| * |
| * see DecimalFormat::getFixedDecimal() |
| * @internal |
| */ |
| class U_I18N_API FixedDecimal: public UMemory { |
| public: |
| /** |
| * @param n the number, e.g. 12.345 |
| * @param v The number of visible fraction digits, e.g. 3 |
| * @param f The fraction digits, e.g. 345 |
| */ |
| FixedDecimal(double n, int32_t v, int64_t f); |
| FixedDecimal(double n, int32_t); |
| explicit FixedDecimal(double n); |
| explicit FixedDecimal(const VisibleDigits &n); |
| FixedDecimal(); |
| FixedDecimal(const UnicodeString &s, UErrorCode &ec); |
| FixedDecimal(const FixedDecimal &other); |
| |
| double get(tokenType operand) const; |
| int32_t getVisibleFractionDigitCount() const; |
| |
| void init(double n, int32_t v, int64_t f); |
| void init(double n); |
| UBool quickInit(double n); // Try a fast-path only initialization, |
| // return TRUE if successful. |
| void adjustForMinFractionDigits(int32_t min); |
| static int64_t getFractionalDigits(double n, int32_t v); |
| static int32_t decimals(double n); |
| |
| double source; |
| int32_t visibleDecimalDigitCount; |
| int64_t decimalDigits; |
| int64_t decimalDigitsWithoutTrailingZeros; |
| int64_t intValue; |
| UBool hasIntegerValue; |
| UBool isNegative; |
| UBool isNanOrInfinity; |
| }; |
| |
| class AndConstraint : public UMemory { |
| public: |
| typedef enum RuleOp { |
| NONE, |
| MOD |
| } RuleOp; |
| RuleOp op; |
| int32_t opNum; // for mod expressions, the right operand of the mod. |
| int32_t value; // valid for 'is' rules only. |
| UVector32 *rangeList; // for 'in', 'within' rules. Null otherwise. |
| UBool negated; // TRUE for negated rules. |
| UBool integerOnly; // TRUE for 'within' rules. |
| tokenType digitsType; // n | i | v | f constraint. |
| AndConstraint *next; |
| |
| AndConstraint(); |
| AndConstraint(const AndConstraint& other); |
| virtual ~AndConstraint(); |
| AndConstraint* add(); |
| // UBool isFulfilled(double number); |
| UBool isFulfilled(const FixedDecimal &number); |
| }; |
| |
| class OrConstraint : public UMemory { |
| public: |
| AndConstraint *childNode; |
| OrConstraint *next; |
| OrConstraint(); |
| |
| OrConstraint(const OrConstraint& other); |
| virtual ~OrConstraint(); |
| AndConstraint* add(); |
| // UBool isFulfilled(double number); |
| UBool isFulfilled(const FixedDecimal &number); |
| }; |
| |
| class RuleChain : public UMemory { |
| public: |
| UnicodeString fKeyword; |
| RuleChain *fNext; |
| OrConstraint *ruleHeader; |
| UnicodeString fDecimalSamples; // Samples strings from rule source |
| UnicodeString fIntegerSamples; // without @decimal or @integer, otherwise unprocessed. |
| UBool fDecimalSamplesUnbounded; |
| UBool fIntegerSamplesUnbounded; |
| |
| |
| RuleChain(); |
| RuleChain(const RuleChain& other); |
| virtual ~RuleChain(); |
| |
| UnicodeString select(const FixedDecimal &number) const; |
| void dumpRules(UnicodeString& result); |
| UErrorCode getKeywords(int32_t maxArraySize, UnicodeString *keywords, int32_t& arraySize) const; |
| UBool isKeyword(const UnicodeString& keyword) const; |
| }; |
| |
| class PluralKeywordEnumeration : public StringEnumeration { |
| public: |
| PluralKeywordEnumeration(RuleChain *header, UErrorCode& status); |
| virtual ~PluralKeywordEnumeration(); |
| static UClassID U_EXPORT2 getStaticClassID(void); |
| virtual UClassID getDynamicClassID(void) const; |
| virtual const UnicodeString* snext(UErrorCode& status); |
| virtual void reset(UErrorCode& status); |
| virtual int32_t count(UErrorCode& status) const; |
| private: |
| int32_t pos; |
| UVector fKeywordNames; |
| }; |
| |
| |
| class U_I18N_API PluralAvailableLocalesEnumeration: public StringEnumeration { |
| public: |
| PluralAvailableLocalesEnumeration(UErrorCode &status); |
| virtual ~PluralAvailableLocalesEnumeration(); |
| virtual const char* next(int32_t *resultLength, UErrorCode& status); |
| virtual void reset(UErrorCode& status); |
| virtual int32_t count(UErrorCode& status) const; |
| private: |
| UErrorCode fOpenStatus; |
| UResourceBundle *fLocales; |
| UResourceBundle *fRes; |
| }; |
| |
| U_NAMESPACE_END |
| |
| #endif /* #if !UCONFIG_NO_FORMATTING */ |
| |
| #endif // _PLURRULE_IMPL |
| //eof |
