/src/icu/source/i18n/unicode/dcfmtsym.h

Source (jump to first uncovered line)
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
********************************************************************************
*   Copyright (C) 1997-2016, International Business Machines
*   Corporation and others.  All Rights Reserved.
********************************************************************************
*
* File DCFMTSYM.H
*
* Modification History:
*
*   Date        Name        Description
*   02/19/97    aliu        Converted from java.
*   03/18/97    clhuang     Updated per C++ implementation.
*   03/27/97    helena      Updated to pass the simple test after code review.
*   08/26/97    aliu        Added currency/intl currency symbol support.
*   07/22/98    stephen     Changed to match C++ style
*                            currencySymbol -> fCurrencySymbol
*                            Constants changed from CAPS to kCaps
*   06/24/99    helena      Integrated Alan's NF enhancements and Java2 bug fixes
*   09/22/00    grhoten     Marked deprecation tags with a pointer to replacement
*                            functions.
********************************************************************************
*/

#ifndef DCFMTSYM_H
#define DCFMTSYM_H

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#if !UCONFIG_NO_FORMATTING

#include "unicode/uchar.h"
#include "unicode/uobject.h"
#include "unicode/locid.h"
#include "unicode/numsys.h"
#include "unicode/unum.h"
#include "unicode/unistr.h"

/**
 * \file
 * \brief C++ API: Symbols for formatting numbers.
 */


U_NAMESPACE_BEGIN

/**
 * This class represents the set of symbols needed by DecimalFormat
 * to format numbers. DecimalFormat creates for itself an instance of
 * DecimalFormatSymbols from its locale data.  If you need to change any
 * of these symbols, you can get the DecimalFormatSymbols object from
 * your DecimalFormat and modify it.
 * <P>
 * Here are the special characters used in the parts of the
 * subpattern, with notes on their usage.
 * <pre>
 * \code
 *        Symbol   Meaning
 *          0      a digit
 *          #      a digit, zero shows as absent
 *          .      placeholder for decimal separator
 *          ,      placeholder for grouping separator.
 *          ;      separates formats.
 *          -      default negative prefix.
 *          %      divide by 100 and show as percentage
 *          X      any other characters can be used in the prefix or suffix
 *          '      used to quote special characters in a prefix or suffix.
 * \endcode
 *  </pre>
 * [Notes]
 * <P>
 * If there is no explicit negative subpattern, - is prefixed to the
 * positive form. That is, "0.00" alone is equivalent to "0.00;-0.00".
 * <P>
 * The grouping separator is commonly used for thousands, but in some
 * countries for ten-thousands. The interval is a constant number of
 * digits between the grouping characters, such as 100,000,000 or 1,0000,0000.
 * If you supply a pattern with multiple grouping characters, the interval
 * between the last one and the end of the integer is the one that is
 * used. So "#,##,###,####" == "######,####" == "##,####,####".
 */
class U_I18N_API DecimalFormatSymbols : public UObject {
public:
    /**
     * Constants for specifying a number format symbol.
     * @stable ICU 2.0
     */
    enum ENumberFormatSymbol {
        /** The decimal separator */
        kDecimalSeparatorSymbol,
        /** The grouping separator */
        kGroupingSeparatorSymbol,
        /** The pattern separator */
        kPatternSeparatorSymbol,
        /** The percent sign */
        kPercentSymbol,
        /** Zero*/
        kZeroDigitSymbol,
        /** Character representing a digit in the pattern */
        kDigitSymbol,
        /** The minus sign */
        kMinusSignSymbol,
        /** The plus sign */
        kPlusSignSymbol,
        /** The currency symbol */
        kCurrencySymbol,
        /** The international currency symbol */
        kIntlCurrencySymbol,
        /** The monetary separator */
        kMonetarySeparatorSymbol,
        /** The exponential symbol */
        kExponentialSymbol,
        /** Per mill symbol - replaces kPermillSymbol */
        kPerMillSymbol,
        /** Escape padding character */
        kPadEscapeSymbol,
        /** Infinity symbol */
        kInfinitySymbol,
        /** Nan symbol */
        kNaNSymbol,
        /** Significant digit symbol
         * @stable ICU 3.0 */
        kSignificantDigitSymbol,
        /** The monetary grouping separator
         * @stable ICU 3.6
         */
        kMonetaryGroupingSeparatorSymbol,
        /** One
         * @stable ICU 4.6
         */
        kOneDigitSymbol,
        /** Two
         * @stable ICU 4.6
         */
        kTwoDigitSymbol,
        /** Three
         * @stable ICU 4.6
         */
        kThreeDigitSymbol,
        /** Four
         * @stable ICU 4.6
         */
        kFourDigitSymbol,
        /** Five
         * @stable ICU 4.6
         */
        kFiveDigitSymbol,
        /** Six
         * @stable ICU 4.6
         */
        kSixDigitSymbol,
        /** Seven
         * @stable ICU 4.6
         */
        kSevenDigitSymbol,
        /** Eight
         * @stable ICU 4.6
         */
        kEightDigitSymbol,
        /** Nine
         * @stable ICU 4.6
         */
        kNineDigitSymbol,
        /** Multiplication sign.
         * @stable ICU 54
         */
        kExponentMultiplicationSymbol,
#ifndef U_HIDE_INTERNAL_API
        /** Approximately sign.
         * @internal
         */
        kApproximatelySignSymbol,
#endif
        /** count symbol constants */
        kFormatSymbolCount = kExponentMultiplicationSymbol + 2
    };

    /**
     * Create a DecimalFormatSymbols object for the given locale.
     *
     * @param locale    The locale to get symbols for.
     * @param status    Input/output parameter, set to success or
     *                  failure code upon return.
     * @stable ICU 2.0
     */
    DecimalFormatSymbols(const Locale& locale, UErrorCode& status);

    /**
     * Creates a DecimalFormatSymbols instance for the given locale with digits and symbols
     * corresponding to the given NumberingSystem.
     *
     * This constructor behaves equivalently to the normal constructor called with a locale having a
     * "numbers=xxxx" keyword specifying the numbering system by name.
     *
     * In this constructor, the NumberingSystem argument will be used even if the locale has its own
     * "numbers=xxxx" keyword.
     *
     * @param locale    The locale to get symbols for.
     * @param ns        The numbering system.
     * @param status    Input/output parameter, set to success or
     *                  failure code upon return.
     * @stable ICU 60
     */
    DecimalFormatSymbols(const Locale& locale, const NumberingSystem& ns, UErrorCode& status);

    /**
     * Create a DecimalFormatSymbols object for the default locale.
     * This constructor will not fail.  If the resource file data is
     * not available, it will use hard-coded last-resort data and
     * set status to U_USING_FALLBACK_ERROR.
     *
     * @param status    Input/output parameter, set to success or
     *                  failure code upon return.
     * @stable ICU 2.0
     */
    DecimalFormatSymbols(UErrorCode& status);

    /**
     * Creates a DecimalFormatSymbols object with last-resort data.
     * Intended for callers who cache the symbols data and
     * set all symbols on the resulting object.
     *
     * The last-resort symbols are similar to those for the root data,
     * except that the grouping separators are empty,
     * the NaN symbol is U+FFFD rather than "NaN",
     * and the CurrencySpacing patterns are empty.
     *
     * @param status    Input/output parameter, set to success or
     *                  failure code upon return.
     * @return last-resort symbols
     * @stable ICU 52
     */
    static DecimalFormatSymbols* createWithLastResortData(UErrorCode& status);

    /**
     * Copy constructor.
     * @stable ICU 2.0
     */
    DecimalFormatSymbols(const DecimalFormatSymbols&);

    /**
     * Assignment operator.
     * @stable ICU 2.0
     */
    DecimalFormatSymbols& operator=(const DecimalFormatSymbols&);

    /**
     * Destructor.
     * @stable ICU 2.0
     */
    virtual ~DecimalFormatSymbols();

    /**
     * Return true if another object is semantically equal to this one.
     *
     * @param other    the object to be compared with.
     * @return         true if another object is semantically equal to this one.
     * @stable ICU 2.0
     */
    bool operator==(const DecimalFormatSymbols& other) const;

    /**
     * Return true if another object is semantically unequal to this one.
     *
     * @param other    the object to be compared with.
     * @return         true if another object is semantically unequal to this one.
     * @stable ICU 2.0
     */
    bool operator!=(const DecimalFormatSymbols& other) const { return !operator==(other); }

    /**
     * Get one of the format symbols by its enum constant.
     * Each symbol is stored as a string so that graphemes
     * (characters with modifier letters) can be used.
     *
     * @param symbol    Constant to indicate a number format symbol.
     * @return    the format symbols by the param 'symbol'
     * @stable ICU 2.0
     */
    inline UnicodeString getSymbol(ENumberFormatSymbol symbol) const;

    /**
     * Set one of the format symbols by its enum constant.
     * Each symbol is stored as a string so that graphemes
     * (characters with modifier letters) can be used.
     *
     * @param symbol    Constant to indicate a number format symbol.
     * @param value     value of the format symbol
     * @param propagateDigits If false, setting the zero digit will not automatically set 1-9.
     *     The default behavior is to automatically set 1-9 if zero is being set and the value
     *     it is being set to corresponds to a known Unicode zero digit.
     * @stable ICU 2.0
     */
    void setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propagateDigits);

#ifndef U_HIDE_INTERNAL_API
    /**
     * Loads symbols for the specified currency into this instance.
     *
     * This method is internal. If you think it should be public, file a ticket.
     *
     * @internal
     */
    void setCurrency(const UChar* currency, UErrorCode& status);
#endif  // U_HIDE_INTERNAL_API

    /**
     * Returns the locale for which this object was constructed.
     * @stable ICU 2.6
     */
    inline Locale getLocale() const;

    /**
     * Returns the locale for this object. Two flavors are available:
     * valid and actual locale.
     * @stable ICU 2.8
     */
    Locale getLocale(ULocDataLocaleType type, UErrorCode& status) const;

    /**
      * Get pattern string for 'CurrencySpacing' that can be applied to
      * currency format.
      * This API gets the CurrencySpacing data from ResourceBundle. The pattern can
      * be empty if there is no data from current locale and its parent locales.
      *
      * @param type :  UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
      * @param beforeCurrency : true if the pattern is for before currency symbol.
      *                         false if the pattern is for after currency symbol.
      * @param status: Input/output parameter, set to success or
      *                  failure code upon return.
      * @return pattern string for currencyMatch, surroundingMatch or spaceInsert.
      *     Return empty string if there is no data for this locale and its parent
      *     locales.
      * @stable ICU 4.8
      */
     const UnicodeString& getPatternForCurrencySpacing(UCurrencySpacing type,
                                                 UBool beforeCurrency,
                                                 UErrorCode& status) const;
     /**
       * Set pattern string for 'CurrencySpacing' that can be applied to
       * currency format.
       *
       * @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
       * @param beforeCurrency : true if the pattern is for before currency symbol.
       *                         false if the pattern is for after currency symbol.
       * @param pattern : pattern string to override current setting.
       * @stable ICU 4.8
       */
     void setPatternForCurrencySpacing(UCurrencySpacing type,
                                       UBool beforeCurrency,
                                       const UnicodeString& pattern);

    /**
     * ICU "poor man's RTTI", returns a UClassID for the actual class.
     *
     * @stable ICU 2.2
     */
    virtual UClassID getDynamicClassID() const;

    /**
     * ICU "poor man's RTTI", returns a UClassID for this class.
     *
     * @stable ICU 2.2
     */
    static UClassID U_EXPORT2 getStaticClassID();

private:
    DecimalFormatSymbols();

    /**
     * Initializes the symbols from the LocaleElements resource bundle.
     * Note: The organization of LocaleElements badly needs to be
     * cleaned up.
     *
     * @param locale               The locale to get symbols for.
     * @param success              Input/output parameter, set to success or
     *                             failure code upon return.
     * @param useLastResortData    determine if use last resort data
     * @param ns                   The NumberingSystem to use; otherwise, fall
     *                             back to the locale.
     */
    void initialize(const Locale& locale, UErrorCode& success,
                    UBool useLastResortData = false, const NumberingSystem* ns = nullptr);

    /**
     * Initialize the symbols with default values.
     */
    void initialize();

public:

#ifndef U_HIDE_INTERNAL_API
    /**
     * @internal For ICU use only
     */
    inline UBool isCustomCurrencySymbol() const {
        return fIsCustomCurrencySymbol;
    }

    /**
     * @internal For ICU use only
     */
    inline UBool isCustomIntlCurrencySymbol() const {
        return fIsCustomIntlCurrencySymbol;
    }

    /**
     * @internal For ICU use only
     */
    inline UChar32 getCodePointZero() const {
        return fCodePointZero;
    }
#endif  /* U_HIDE_INTERNAL_API */

    /**
     * _Internal_ function - more efficient version of getSymbol,
     * returning a const reference to one of the symbol strings.
     * The returned reference becomes invalid when the symbol is changed
     * or when the DecimalFormatSymbols are destroyed.
     * Note: moved \#ifndef U_HIDE_INTERNAL_API after this, since this is needed for inline in DecimalFormat
     *
     * This is not currently stable API, but if you think it should be stable,
     * post a comment on the following ticket and the ICU team will take a look:
     * http://bugs.icu-project.org/trac/ticket/13580
     *
     * @param symbol Constant to indicate a number format symbol.
     * @return the format symbol by the param 'symbol'
     * @internal
     */
    inline const UnicodeString& getConstSymbol(ENumberFormatSymbol symbol) const;

#ifndef U_HIDE_INTERNAL_API
    /**
     * Returns the const UnicodeString reference, like getConstSymbol,
     * corresponding to the digit with the given value.  This is equivalent
     * to accessing the symbol from getConstSymbol with the corresponding
     * key, such as kZeroDigitSymbol or kOneDigitSymbol.
     *
     * This is not currently stable API, but if you think it should be stable,
     * post a comment on the following ticket and the ICU team will take a look:
     * http://bugs.icu-project.org/trac/ticket/13580
     *
     * @param digit The digit, an integer between 0 and 9 inclusive.
     *              If outside the range 0 to 9, the zero digit is returned.
     * @return the format symbol for the given digit.
     * @internal This API is currently for ICU use only.
     */
    inline const UnicodeString& getConstDigitSymbol(int32_t digit) const;

    /**
     * Returns that pattern stored in currency info. Internal API for use by NumberFormat API.
     * @internal
     */
    inline const char16_t* getCurrencyPattern(void) const;
#endif  /* U_HIDE_INTERNAL_API */

private:
    /**
     * Private symbol strings.
     * They are either loaded from a resource bundle or otherwise owned.
     * setSymbol() clones the symbol string.
     * Readonly aliases can only come from a resource bundle, so that we can always
     * use fastCopyFrom() with them.
     *
     * If DecimalFormatSymbols becomes subclassable and the status of fSymbols changes
     * from private to protected,
     * or when fSymbols can be set any other way that allows them to be readonly aliases
     * to non-resource bundle strings,
     * then regular UnicodeString copies must be used instead of fastCopyFrom().
     *
     */
    UnicodeString fSymbols[kFormatSymbolCount];

    /**
     * Non-symbol variable for getConstSymbol(). Always empty.
     */
    UnicodeString fNoSymbol;

    /**
     * Dealing with code points is faster than dealing with strings when formatting. Because of
     * this, we maintain a value containing the zero code point that is used whenever digitStrings
     * represents a sequence of ten code points in order.
     *
     * <p>If the value stored here is positive, it means that the code point stored in this value
     * corresponds to the digitStrings array, and codePointZero can be used instead of the
     * digitStrings array for the purposes of efficient formatting; if -1, then digitStrings does
     * *not* contain a sequence of code points, and it must be used directly.
     *
     * <p>It is assumed that codePointZero always shadows the value in digitStrings. codePointZero
     * should never be set directly; rather, it should be updated only when digitStrings mutates.
     * That is, the flow of information is digitStrings -> codePointZero, not the other way.
     */
    UChar32 fCodePointZero;

    Locale locale;

    char actualLocale[ULOC_FULLNAME_CAPACITY];
    char validLocale[ULOC_FULLNAME_CAPACITY];
    const char16_t* currPattern;

    UnicodeString currencySpcBeforeSym[UNUM_CURRENCY_SPACING_COUNT];
    UnicodeString currencySpcAfterSym[UNUM_CURRENCY_SPACING_COUNT];
    UBool fIsCustomCurrencySymbol;
    UBool fIsCustomIntlCurrencySymbol;
};

// -------------------------------------

inline UnicodeString
DecimalFormatSymbols::getSymbol(ENumberFormatSymbol symbol) const {
    const UnicodeString *strPtr;
    if(symbol < kFormatSymbolCount) {
        strPtr = &fSymbols[symbol];
    } else {
        strPtr = &fNoSymbol;
    }
    return *strPtr;
}

// See comments above for this function. Not hidden with #ifdef U_HIDE_INTERNAL_API
inline const UnicodeString &
DecimalFormatSymbols::getConstSymbol(ENumberFormatSymbol symbol) const {
    const UnicodeString *strPtr;
    if(symbol < kFormatSymbolCount) {
        strPtr = &fSymbols[symbol];
    } else {
        strPtr = &fNoSymbol;
    }
    return *strPtr;
}

#ifndef U_HIDE_INTERNAL_API
inline const UnicodeString& DecimalFormatSymbols::getConstDigitSymbol(int32_t digit) const {
    if (digit < 0 || digit > 9) {
        digit = 0;
    }
    if (digit == 0) {
        return fSymbols[kZeroDigitSymbol];
    }
    ENumberFormatSymbol key = static_cast<ENumberFormatSymbol>(kOneDigitSymbol + digit - 1);
    return fSymbols[key];
}
#endif /* U_HIDE_INTERNAL_API */

// -------------------------------------

inline void
DecimalFormatSymbols::setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propagateDigits = true) {
    if (symbol == kCurrencySymbol) {
        fIsCustomCurrencySymbol = true;
    }
    else if (symbol == kIntlCurrencySymbol) {
        fIsCustomIntlCurrencySymbol = true;
    }
    if(symbol<kFormatSymbolCount) {
        fSymbols[symbol]=value;
    }

    // If the zero digit is being set to a known zero digit according to Unicode,
    // then we automatically set the corresponding 1-9 digits
    // Also record updates to fCodePointZero. Be conservative if in doubt.
    if (symbol == kZeroDigitSymbol) {
        UChar32 sym = value.char32At(0);
        if ( propagateDigits && u_charDigitValue(sym) == 0 && value.countChar32() == 1 ) {
            fCodePointZero = sym;
            for ( int8_t i = 1 ; i<= 9 ; i++ ) {
                sym++;
                fSymbols[(int)kOneDigitSymbol+i-1] = UnicodeString(sym);
            }
        } else {
            fCodePointZero = -1;
        }
    } else if (symbol >= kOneDigitSymbol && symbol <= kNineDigitSymbol) {
        fCodePointZero = -1;
    }
}

// -------------------------------------

inline Locale
DecimalFormatSymbols::getLocale() const {
    return locale;
}

#ifndef U_HIDE_INTERNAL_API
inline const char16_t*
DecimalFormatSymbols::getCurrencyPattern() const {
    return currPattern;
}
#endif /* U_HIDE_INTERNAL_API */

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

#endif /* U_SHOW_CPLUSPLUS_API */

#endif // _DCFMTSYM
//eof

Coverage Report

Created: 2023-02-22 06:51

Line	Count	Source (jump to first uncovered line)
1		// © 2016 and later: Unicode, Inc. and others.
2		// License & terms of use: http://www.unicode.org/copyright.html
3		/*
4		********************************************************************************
5		* Copyright (C) 1997-2016, International Business Machines
6		* Corporation and others. All Rights Reserved.
7		********************************************************************************
8		*
9		* File DCFMTSYM.H
10		*
11		* Modification History:
12		*
13		* Date Name Description
14		* 02/19/97 aliu Converted from java.
15		* 03/18/97 clhuang Updated per C++ implementation.
16		* 03/27/97 helena Updated to pass the simple test after code review.
17		* 08/26/97 aliu Added currency/intl currency symbol support.
18		* 07/22/98 stephen Changed to match C++ style
19		* currencySymbol -> fCurrencySymbol
20		* Constants changed from CAPS to kCaps
21		* 06/24/99 helena Integrated Alan's NF enhancements and Java2 bug fixes
22		* 09/22/00 grhoten Marked deprecation tags with a pointer to replacement
23		* functions.
24		********************************************************************************
25		*/
26
27		#ifndef DCFMTSYM_H
28		#define DCFMTSYM_H
29
30		#include "unicode/utypes.h"
31
32		#if U_SHOW_CPLUSPLUS_API
33
34		#if !UCONFIG_NO_FORMATTING
35
36		#include "unicode/uchar.h"
37		#include "unicode/uobject.h"
38		#include "unicode/locid.h"
39		#include "unicode/numsys.h"
40		#include "unicode/unum.h"
41		#include "unicode/unistr.h"
42
43		/**
44		* \file
45		* \brief C++ API: Symbols for formatting numbers.
46		*/
47
48
49		U_NAMESPACE_BEGIN
50
51		/**
52		* This class represents the set of symbols needed by DecimalFormat
53		* to format numbers. DecimalFormat creates for itself an instance of
54		* DecimalFormatSymbols from its locale data. If you need to change any
55		* of these symbols, you can get the DecimalFormatSymbols object from
56		* your DecimalFormat and modify it.
57		* <P>
58		* Here are the special characters used in the parts of the
59		* subpattern, with notes on their usage.
60		* <pre>
61		* \code
62		* Symbol Meaning
63		* 0 a digit
64		* # a digit, zero shows as absent
65		* . placeholder for decimal separator
66		* , placeholder for grouping separator.
67		* ; separates formats.
68		* - default negative prefix.
69		* % divide by 100 and show as percentage
70		* X any other characters can be used in the prefix or suffix
71		* ' used to quote special characters in a prefix or suffix.
72		* \endcode
73		* </pre>
74		* [Notes]
75		* <P>
76		* If there is no explicit negative subpattern, - is prefixed to the
77		* positive form. That is, "0.00" alone is equivalent to "0.00;-0.00".
78		* <P>
79		* The grouping separator is commonly used for thousands, but in some
80		* countries for ten-thousands. The interval is a constant number of
81		* digits between the grouping characters, such as 100,000,000 or 1,0000,0000.
82		* If you supply a pattern with multiple grouping characters, the interval
83		* between the last one and the end of the integer is the one that is
84		* used. So "#,##,###,####" == "######,####" == "##,####,####".
85		*/
86		class U_I18N_API DecimalFormatSymbols : public UObject {
87		public:
88		/**
89		* Constants for specifying a number format symbol.
90		* @stable ICU 2.0
91		*/
92		enum ENumberFormatSymbol {
93		/** The decimal separator */
94		kDecimalSeparatorSymbol,
95		/** The grouping separator */
96		kGroupingSeparatorSymbol,
97		/** The pattern separator */
98		kPatternSeparatorSymbol,
99		/** The percent sign */
100		kPercentSymbol,
101		/** Zero*/
102		kZeroDigitSymbol,
103		/** Character representing a digit in the pattern */
104		kDigitSymbol,
105		/** The minus sign */
106		kMinusSignSymbol,
107		/** The plus sign */
108		kPlusSignSymbol,
109		/** The currency symbol */
110		kCurrencySymbol,
111		/** The international currency symbol */
112		kIntlCurrencySymbol,
113		/** The monetary separator */
114		kMonetarySeparatorSymbol,
115		/** The exponential symbol */
116		kExponentialSymbol,
117		/** Per mill symbol - replaces kPermillSymbol */
118		kPerMillSymbol,
119		/** Escape padding character */
120		kPadEscapeSymbol,
121		/** Infinity symbol */
122		kInfinitySymbol,
123		/** Nan symbol */
124		kNaNSymbol,
125		/** Significant digit symbol
126		* @stable ICU 3.0 */
127		kSignificantDigitSymbol,
128		/** The monetary grouping separator
129		* @stable ICU 3.6
130		*/
131		kMonetaryGroupingSeparatorSymbol,
132		/** One
133		* @stable ICU 4.6
134		*/
135		kOneDigitSymbol,
136		/** Two
137		* @stable ICU 4.6
138		*/
139		kTwoDigitSymbol,
140		/** Three
141		* @stable ICU 4.6
142		*/
143		kThreeDigitSymbol,
144		/** Four
145		* @stable ICU 4.6
146		*/
147		kFourDigitSymbol,
148		/** Five
149		* @stable ICU 4.6
150		*/
151		kFiveDigitSymbol,
152		/** Six
153		* @stable ICU 4.6
154		*/
155		kSixDigitSymbol,
156		/** Seven
157		* @stable ICU 4.6
158		*/
159		kSevenDigitSymbol,
160		/** Eight
161		* @stable ICU 4.6
162		*/
163		kEightDigitSymbol,
164		/** Nine
165		* @stable ICU 4.6
166		*/
167		kNineDigitSymbol,
168		/** Multiplication sign.
169		* @stable ICU 54
170		*/
171		kExponentMultiplicationSymbol,
172		#ifndef U_HIDE_INTERNAL_API
173		/** Approximately sign.
174		* @internal
175		*/
176		kApproximatelySignSymbol,
177		#endif
178		/** count symbol constants */
179		kFormatSymbolCount = kExponentMultiplicationSymbol + 2
180		};
181
182		/**
183		* Create a DecimalFormatSymbols object for the given locale.
184		*
185		* @param locale The locale to get symbols for.
186		* @param status Input/output parameter, set to success or
187		* failure code upon return.
188		* @stable ICU 2.0
189		*/
190		DecimalFormatSymbols(const Locale& locale, UErrorCode& status);
191
192		/**
193		* Creates a DecimalFormatSymbols instance for the given locale with digits and symbols
194		* corresponding to the given NumberingSystem.
195		*
196		* This constructor behaves equivalently to the normal constructor called with a locale having a
197		* "numbers=xxxx" keyword specifying the numbering system by name.
198		*
199		* In this constructor, the NumberingSystem argument will be used even if the locale has its own
200		* "numbers=xxxx" keyword.
201		*
202		* @param locale The locale to get symbols for.
203		* @param ns The numbering system.
204		* @param status Input/output parameter, set to success or
205		* failure code upon return.
206		* @stable ICU 60
207		*/
208		DecimalFormatSymbols(const Locale& locale, const NumberingSystem& ns, UErrorCode& status);
209
210		/**
211		* Create a DecimalFormatSymbols object for the default locale.
212		* This constructor will not fail. If the resource file data is
213		* not available, it will use hard-coded last-resort data and
214		* set status to U_USING_FALLBACK_ERROR.
215		*
216		* @param status Input/output parameter, set to success or
217		* failure code upon return.
218		* @stable ICU 2.0
219		*/
220		DecimalFormatSymbols(UErrorCode& status);
221
222		/**
223		* Creates a DecimalFormatSymbols object with last-resort data.
224		* Intended for callers who cache the symbols data and
225		* set all symbols on the resulting object.
226		*
227		* The last-resort symbols are similar to those for the root data,
228		* except that the grouping separators are empty,
229		* the NaN symbol is U+FFFD rather than "NaN",
230		* and the CurrencySpacing patterns are empty.
231		*
232		* @param status Input/output parameter, set to success or
233		* failure code upon return.
234		* @return last-resort symbols
235		* @stable ICU 52
236		*/
237		static DecimalFormatSymbols* createWithLastResortData(UErrorCode& status);
238
239		/**
240		* Copy constructor.
241		* @stable ICU 2.0
242		*/
243		DecimalFormatSymbols(const DecimalFormatSymbols&);
244
245		/**
246		* Assignment operator.
247		* @stable ICU 2.0
248		*/
249		DecimalFormatSymbols& operator=(const DecimalFormatSymbols&);
250
251		/**
252		* Destructor.
253		* @stable ICU 2.0
254		*/
255		virtual ~DecimalFormatSymbols();
256
257		/**
258		* Return true if another object is semantically equal to this one.
259		*
260		* @param other the object to be compared with.
261		* @return true if another object is semantically equal to this one.
262		* @stable ICU 2.0
263		*/
264		bool operator==(const DecimalFormatSymbols& other) const;
265
266		/**
267		* Return true if another object is semantically unequal to this one.
268		*
269		* @param other the object to be compared with.
270		* @return true if another object is semantically unequal to this one.
271		* @stable ICU 2.0
272		*/
273	0	bool operator!=(const DecimalFormatSymbols& other) const { return !operator==(other); }
274
275		/**
276		* Get one of the format symbols by its enum constant.
277		* Each symbol is stored as a string so that graphemes
278		* (characters with modifier letters) can be used.
279		*
280		* @param symbol Constant to indicate a number format symbol.
281		* @return the format symbols by the param 'symbol'
282		* @stable ICU 2.0
283		*/
284		inline UnicodeString getSymbol(ENumberFormatSymbol symbol) const;
285
286		/**
287		* Set one of the format symbols by its enum constant.
288		* Each symbol is stored as a string so that graphemes
289		* (characters with modifier letters) can be used.
290		*
291		* @param symbol Constant to indicate a number format symbol.
292		* @param value value of the format symbol
293		* @param propagateDigits If false, setting the zero digit will not automatically set 1-9.
294		* The default behavior is to automatically set 1-9 if zero is being set and the value
295		* it is being set to corresponds to a known Unicode zero digit.
296		* @stable ICU 2.0
297		*/
298		void setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propagateDigits);
299
300		#ifndef U_HIDE_INTERNAL_API
301		/**
302		* Loads symbols for the specified currency into this instance.
303		*
304		* This method is internal. If you think it should be public, file a ticket.
305		*
306		* @internal
307		*/
308		void setCurrency(const UChar* currency, UErrorCode& status);
309		#endif // U_HIDE_INTERNAL_API
310
311		/**
312		* Returns the locale for which this object was constructed.
313		* @stable ICU 2.6
314		*/
315		inline Locale getLocale() const;
316
317		/**
318		* Returns the locale for this object. Two flavors are available:
319		* valid and actual locale.
320		* @stable ICU 2.8
321		*/
322		Locale getLocale(ULocDataLocaleType type, UErrorCode& status) const;
323
324		/**
325		* Get pattern string for 'CurrencySpacing' that can be applied to
326		* currency format.
327		* This API gets the CurrencySpacing data from ResourceBundle. The pattern can
328		* be empty if there is no data from current locale and its parent locales.
329		*
330		* @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
331		* @param beforeCurrency : true if the pattern is for before currency symbol.
332		* false if the pattern is for after currency symbol.
333		* @param status: Input/output parameter, set to success or
334		* failure code upon return.
335		* @return pattern string for currencyMatch, surroundingMatch or spaceInsert.
336		* Return empty string if there is no data for this locale and its parent
337		* locales.
338		* @stable ICU 4.8
339		*/
340		const UnicodeString& getPatternForCurrencySpacing(UCurrencySpacing type,
341		UBool beforeCurrency,
342		UErrorCode& status) const;
343		/**
344		* Set pattern string for 'CurrencySpacing' that can be applied to
345		* currency format.
346		*
347		* @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
348		* @param beforeCurrency : true if the pattern is for before currency symbol.
349		* false if the pattern is for after currency symbol.
350		* @param pattern : pattern string to override current setting.
351		* @stable ICU 4.8
352		*/
353		void setPatternForCurrencySpacing(UCurrencySpacing type,
354		UBool beforeCurrency,
355		const UnicodeString& pattern);
356
357		/**
358		* ICU "poor man's RTTI", returns a UClassID for the actual class.
359		*
360		* @stable ICU 2.2
361		*/
362		virtual UClassID getDynamicClassID() const;
363
364		/**
365		* ICU "poor man's RTTI", returns a UClassID for this class.
366		*
367		* @stable ICU 2.2
368		*/
369		static UClassID U_EXPORT2 getStaticClassID();
370
371		private:
372		DecimalFormatSymbols();
373
374		/**
375		* Initializes the symbols from the LocaleElements resource bundle.
376		* Note: The organization of LocaleElements badly needs to be
377		* cleaned up.
378		*
379		* @param locale The locale to get symbols for.
380		* @param success Input/output parameter, set to success or
381		* failure code upon return.
382		* @param useLastResortData determine if use last resort data
383		* @param ns The NumberingSystem to use; otherwise, fall
384		* back to the locale.
385		*/
386		void initialize(const Locale& locale, UErrorCode& success,
387		UBool useLastResortData = false, const NumberingSystem* ns = nullptr);
388
389		/**
390		* Initialize the symbols with default values.
391		*/
392		void initialize();
393
394		public:
395
396		#ifndef U_HIDE_INTERNAL_API
397		/**
398		* @internal For ICU use only
399		*/
400	0	inline UBool isCustomCurrencySymbol() const {
401	0	return fIsCustomCurrencySymbol;
402	0	}
403
404		/**
405		* @internal For ICU use only
406		*/
407	0	inline UBool isCustomIntlCurrencySymbol() const {
408	0	return fIsCustomIntlCurrencySymbol;
409	0	}
410
411		/**
412		* @internal For ICU use only
413		*/
414	0	inline UChar32 getCodePointZero() const {
415	0	return fCodePointZero;
416	0	}
417		#endif /* U_HIDE_INTERNAL_API */
418
419		/**
420		* _Internal_ function - more efficient version of getSymbol,
421		* returning a const reference to one of the symbol strings.
422		* The returned reference becomes invalid when the symbol is changed
423		* or when the DecimalFormatSymbols are destroyed.
424		* Note: moved \#ifndef U_HIDE_INTERNAL_API after this, since this is needed for inline in DecimalFormat
425		*
426		* This is not currently stable API, but if you think it should be stable,
427		* post a comment on the following ticket and the ICU team will take a look:
428		* http://bugs.icu-project.org/trac/ticket/13580
429		*
430		* @param symbol Constant to indicate a number format symbol.
431		* @return the format symbol by the param 'symbol'
432		* @internal
433		*/
434		inline const UnicodeString& getConstSymbol(ENumberFormatSymbol symbol) const;
435
436		#ifndef U_HIDE_INTERNAL_API
437		/**
438		* Returns the const UnicodeString reference, like getConstSymbol,
439		* corresponding to the digit with the given value. This is equivalent
440		* to accessing the symbol from getConstSymbol with the corresponding
441		* key, such as kZeroDigitSymbol or kOneDigitSymbol.
442		*
443		* This is not currently stable API, but if you think it should be stable,
444		* post a comment on the following ticket and the ICU team will take a look:
445		* http://bugs.icu-project.org/trac/ticket/13580
446		*
447		* @param digit The digit, an integer between 0 and 9 inclusive.
448		* If outside the range 0 to 9, the zero digit is returned.
449		* @return the format symbol for the given digit.
450		* @internal This API is currently for ICU use only.
451		*/
452		inline const UnicodeString& getConstDigitSymbol(int32_t digit) const;
453
454		/**
455		* Returns that pattern stored in currency info. Internal API for use by NumberFormat API.
456		* @internal
457		*/
458		inline const char16_t* getCurrencyPattern(void) const;
459		#endif /* U_HIDE_INTERNAL_API */
460
461		private:
462		/**
463		* Private symbol strings.
464		* They are either loaded from a resource bundle or otherwise owned.
465		* setSymbol() clones the symbol string.
466		* Readonly aliases can only come from a resource bundle, so that we can always
467		* use fastCopyFrom() with them.
468		*
469		* If DecimalFormatSymbols becomes subclassable and the status of fSymbols changes
470		* from private to protected,
471		* or when fSymbols can be set any other way that allows them to be readonly aliases
472		* to non-resource bundle strings,
473		* then regular UnicodeString copies must be used instead of fastCopyFrom().
474		*
475		*/
476		UnicodeString fSymbols[kFormatSymbolCount];
477
478		/**
479		* Non-symbol variable for getConstSymbol(). Always empty.
480		*/
481		UnicodeString fNoSymbol;
482
483		/**
484		* Dealing with code points is faster than dealing with strings when formatting. Because of
485		* this, we maintain a value containing the zero code point that is used whenever digitStrings
486		* represents a sequence of ten code points in order.
487		*
488		* <p>If the value stored here is positive, it means that the code point stored in this value
489		* corresponds to the digitStrings array, and codePointZero can be used instead of the
490		* digitStrings array for the purposes of efficient formatting; if -1, then digitStrings does
491		* not contain a sequence of code points, and it must be used directly.
492		*
493		* <p>It is assumed that codePointZero always shadows the value in digitStrings. codePointZero
494		* should never be set directly; rather, it should be updated only when digitStrings mutates.
495		* That is, the flow of information is digitStrings -> codePointZero, not the other way.
496		*/
497		UChar32 fCodePointZero;
498
499		Locale locale;
500
501		char actualLocale[ULOC_FULLNAME_CAPACITY];
502		char validLocale[ULOC_FULLNAME_CAPACITY];
503		const char16_t* currPattern;
504
505		UnicodeString currencySpcBeforeSym[UNUM_CURRENCY_SPACING_COUNT];
506		UnicodeString currencySpcAfterSym[UNUM_CURRENCY_SPACING_COUNT];
507		UBool fIsCustomCurrencySymbol;
508		UBool fIsCustomIntlCurrencySymbol;
509		};
510
511		// -------------------------------------
512
513		inline UnicodeString
514	0	DecimalFormatSymbols::getSymbol(ENumberFormatSymbol symbol) const {
515	0	const UnicodeString *strPtr;
516	0	if(symbol < kFormatSymbolCount) {
517	0	strPtr = &fSymbols[symbol];
518	0	} else {
519	0	strPtr = &fNoSymbol;
520	0	}
521	0	return *strPtr;
522	0	}
523
524		// See comments above for this function. Not hidden with #ifdef U_HIDE_INTERNAL_API
525		inline const UnicodeString &
526	0	DecimalFormatSymbols::getConstSymbol(ENumberFormatSymbol symbol) const {
527	0	const UnicodeString *strPtr;
528	0	if(symbol < kFormatSymbolCount) {
529	0	strPtr = &fSymbols[symbol];
530	0	} else {
531	0	strPtr = &fNoSymbol;
532	0	}
533	0	return *strPtr;
534	0	}
535
536		#ifndef U_HIDE_INTERNAL_API
537	0	inline const UnicodeString& DecimalFormatSymbols::getConstDigitSymbol(int32_t digit) const {
538	0	if (digit < 0 \|\| digit > 9) {
539	0	digit = 0;
540	0	}
541	0	if (digit == 0) {
542	0	return fSymbols[kZeroDigitSymbol];
543	0	}
544	0	ENumberFormatSymbol key = static_cast<ENumberFormatSymbol>(kOneDigitSymbol + digit - 1);
545	0	return fSymbols[key];
546	0	}
547		#endif /* U_HIDE_INTERNAL_API */
548
549		// -------------------------------------
550
551		inline void
552	0	DecimalFormatSymbols::setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propagateDigits = true) {
553	0	if (symbol == kCurrencySymbol) {
554	0	fIsCustomCurrencySymbol = true;
555	0	}
556	0	else if (symbol == kIntlCurrencySymbol) {
557	0	fIsCustomIntlCurrencySymbol = true;
558	0	}
559	0	if(symbol<kFormatSymbolCount) {
560	0	fSymbols[symbol]=value;
561	0	}
562
563		// If the zero digit is being set to a known zero digit according to Unicode,
564		// then we automatically set the corresponding 1-9 digits
565		// Also record updates to fCodePointZero. Be conservative if in doubt.
566	0	if (symbol == kZeroDigitSymbol) {
567	0	UChar32 sym = value.char32At(0);
568	0	if ( propagateDigits && u_charDigitValue(sym) == 0 && value.countChar32() == 1 ) {
569	0	fCodePointZero = sym;
570	0	for ( int8_t i = 1 ; i<= 9 ; i++ ) {
571	0	sym++;
572	0	fSymbols[(int)kOneDigitSymbol+i-1] = UnicodeString(sym);
573	0	}
574	0	} else {
575	0	fCodePointZero = -1;
576	0	}
577	0	} else if (symbol >= kOneDigitSymbol && symbol <= kNineDigitSymbol) {
578	0	fCodePointZero = -1;
579	0	}
580	0	}
581
582		// -------------------------------------
583
584		inline Locale
585	0	DecimalFormatSymbols::getLocale() const {
586	0	return locale;
587	0	}
588
589		#ifndef U_HIDE_INTERNAL_API
590		inline const char16_t*
591	0	DecimalFormatSymbols::getCurrencyPattern() const {
592	0	return currPattern;
593	0	}
594		#endif /* U_HIDE_INTERNAL_API */
595
596		U_NAMESPACE_END
597
598		#endif /* #if !UCONFIG_NO_FORMATTING */
599
600		#endif /* U_SHOW_CPLUSPLUS_API */
601
602		#endif // _DCFMTSYM
603		//eof