Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 408 insertions, 0 deletions

diff --git a/intl/icu/source/i18n/plurrule_impl.h b/intl/icu/source/i18n/plurrule_impl.h
new file mode 100644
index 0000000000..0dc44fb62e
--- /dev/null
+++ b/intl/icu/source/i18n/plurrule_impl.h
@@ -0,0 +1,408 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+* Copyright (C) 2007-2016, 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/strenum.h"
+#include "unicode/ures.h"
+#include "uvector.h"
+#include "hash.h"
+#include "uassert.h"
+
+class PluralRulesTest;
+
+U_NAMESPACE_BEGIN
+
+class AndConstraint;
+class RuleChain;
+class DigitInterval;
+class PluralRules;
+class VisibleDigits;
+
+namespace pluralimpl {
+
+// TODO: Remove this and replace with u"" literals. Was for EBCDIC compatibility.
+
+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
+    };
+};
+
+enum PluralOperand {
+    /**
+    * The double value of the entire number.
+    */
+    PLURAL_OPERAND_N,
+
+    /**
+     * The integer value, with the fraction digits truncated off.
+     */
+    PLURAL_OPERAND_I,
+
+    /**
+     * All visible fraction digits as an integer, including trailing zeros.
+     */
+    PLURAL_OPERAND_F,
+
+    /**
+     * Visible fraction digits as an integer, not including trailing zeros.
+     */
+    PLURAL_OPERAND_T,
+
+    /**
+     * Number of visible fraction digits.
+     */
+    PLURAL_OPERAND_V,
+
+    /**
+     * Number of visible fraction digits, not including trailing zeros.
+     */
+    PLURAL_OPERAND_W,
+
+    /**
+     * Suppressed exponent for compact notation (exponent needed in
+     * scientific notation with compact notation to approximate i).
+     */
+    PLURAL_OPERAND_E,
+
+    /**
+     * THIS OPERAND IS DEPRECATED AND HAS BEEN REMOVED FROM THE SPEC.
+     *
+     * <p>Returns the integer value, but will fail if the number has fraction digits.
+     * That is, using "j" instead of "i" is like implicitly adding "v is 0".
+     *
+     * <p>For example, "j is 3" is equivalent to "i is 3 and v is 0": it matches
+     * "3" but not "3.1" or "3.0".
+     */
+    PLURAL_OPERAND_J
+};
+
+/**
+ * Converts from the tokenType enum to PluralOperand. Asserts that the given
+ * tokenType can be mapped to a PluralOperand.
+ */
+PluralOperand tokenTypeToPluralOperand(tokenType tt);
+
+/**
+ * An interface to FixedDecimal, allowing for other implementations.
+ * @internal
+ */
+class U_I18N_API IFixedDecimal {
+  public:
+    virtual ~IFixedDecimal();
+
+    /**
+     * Returns the value corresponding to the specified operand (n, i, f, t, v, or w).
+     * If the operand is 'n', returns a double; otherwise, returns an integer.
+     */
+    virtual double getPluralOperand(PluralOperand operand) const = 0;
+
+    virtual bool isNaN() const = 0;
+
+    virtual bool isInfinite() const = 0;
+
+    /** Whether the number has no nonzero fraction digits. */
+    virtual bool hasIntegerValue() const = 0;
+};
+
+/**
+ * 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 IFixedDecimal, public UObject {
+  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);
+    FixedDecimal();
+    ~FixedDecimal() U_OVERRIDE;
+    FixedDecimal(const UnicodeString &s, UErrorCode &ec);
+    FixedDecimal(const FixedDecimal &other);
+
+    double getPluralOperand(PluralOperand operand) const U_OVERRIDE;
+    bool isNaN() const U_OVERRIDE;
+    bool isInfinite() const U_OVERRIDE;
+    bool hasIntegerValue() const U_OVERRIDE;
+
+    bool isNanOrInfinity() const;  // used in decimfmtimpl.cpp
+
+    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       _isNaN;
+    UBool       _isInfinite;
+};
+
+class AndConstraint : public UMemory  {
+public:
+    typedef enum RuleOp {
+        NONE,
+        MOD
+    } RuleOp;
+    RuleOp op = AndConstraint::NONE;
+    int32_t opNum = -1;             // for mod expressions, the right operand of the mod.
+    int32_t value = -1;             // valid for 'is' rules only.
+    UVector32 *rangeList = nullptr; // for 'in', 'within' rules. Null otherwise.
+    UBool negated = FALSE;          // TRUE for negated rules.
+    UBool integerOnly = FALSE;      // TRUE for 'within' rules.
+    tokenType digitsType = none;    // n | i | v | f constraint.
+    AndConstraint *next = nullptr;
+    // Internal error status, used for errors that occur during the copy constructor.
+    UErrorCode fInternalStatus = U_ZERO_ERROR;    
+
+    AndConstraint() = default;
+    AndConstraint(const AndConstraint& other);
+    virtual ~AndConstraint();
+    AndConstraint* add(UErrorCode& status);
+    // UBool isFulfilled(double number);
+    UBool isFulfilled(const IFixedDecimal &number);
+};
+
+class OrConstraint : public UMemory  {
+public:
+    AndConstraint *childNode = nullptr;
+    OrConstraint *next = nullptr;
+    // Internal error status, used for errors that occur during the copy constructor.
+    UErrorCode fInternalStatus = U_ZERO_ERROR;
+
+    OrConstraint() = default;
+    OrConstraint(const OrConstraint& other);
+    virtual ~OrConstraint();
+    AndConstraint* add(UErrorCode& status);
+    // UBool isFulfilled(double number);
+    UBool isFulfilled(const IFixedDecimal &number);
+};
+
+class RuleChain : public UMemory  {
+public:
+    UnicodeString   fKeyword;
+    RuleChain      *fNext = nullptr;
+    OrConstraint   *ruleHeader = nullptr;
+    UnicodeString   fDecimalSamples;  // Samples strings from rule source
+    UnicodeString   fIntegerSamples;  //   without @decimal or @integer, otherwise unprocessed.
+    UBool           fDecimalSamplesUnbounded = FALSE;
+    UBool           fIntegerSamplesUnbounded = FALSE;
+    // Internal error status, used for errors that occur during the copy constructor.
+    UErrorCode      fInternalStatus = U_ZERO_ERROR;
+
+    RuleChain() = default;
+    RuleChain(const RuleChain& other);
+    virtual ~RuleChain();
+
+    UnicodeString select(const IFixedDecimal &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 = nullptr;
+    UResourceBundle *fRes = nullptr;
+};
+
+U_NAMESPACE_END
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+#endif // _PLURRULE_IMPL
+//eof