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currunit.h (4115B)

      1 // © 2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 **********************************************************************
      5 * Copyright (c) 2004-2014, International Business Machines
      6 * Corporation and others.  All Rights Reserved.
      7 **********************************************************************
      8 * Author: Alan Liu
      9 * Created: April 26, 2004
     10 * Since: ICU 3.0
     11 **********************************************************************
     12 */
     13 #ifndef __CURRENCYUNIT_H__
     14 #define __CURRENCYUNIT_H__
     15 
     16 #include "unicode/utypes.h"
     17 
     18 #if U_SHOW_CPLUSPLUS_API
     19 
     20 #if !UCONFIG_NO_FORMATTING
     21 
     22 #include "unicode/measunit.h"
     23 
     24 /**
     25 * \file 
     26 * \brief C++ API: Currency Unit Information.
     27 */
     28 
     29 U_NAMESPACE_BEGIN
     30 
     31 /**
     32 * A unit of currency, such as USD (U.S. dollars) or JPY (Japanese
     33 * yen).  This class is a thin wrapper over a char16_t string that
     34 * subclasses MeasureUnit, for use with Measure and MeasureFormat.
     35 *
     36 * @author Alan Liu
     37 * @stable ICU 3.0
     38 */
     39 class U_I18N_API CurrencyUnit: public MeasureUnit {
     40 public:
     41    /**
     42     * Default constructor.  Initializes currency code to "XXX" (no currency).
     43     * @stable ICU 60
     44     */
     45    CurrencyUnit();
     46 
     47    /**
     48     * Construct an object with the given ISO currency code.
     49     *
     50     * @param isoCode the 3-letter ISO 4217 currency code; must have
     51     * length 3 and need not be NUL-terminated. If nullptr, the currency
     52     * is initialized to the unknown currency XXX.
     53     * @param ec input-output error code. If the isoCode is invalid,
     54     * then this will be set to a failing value.
     55     * @stable ICU 3.0
     56     */
     57    CurrencyUnit(ConstChar16Ptr isoCode, UErrorCode &ec);
     58 
     59    /**
     60     * Construct an object with the given ISO currency code.
     61     *
     62     * @param isoCode the 3-letter ISO 4217 currency code; must have
     63     * length 3. If invalid, the currency is initialized to XXX.
     64     * @param ec input-output error code. If the isoCode is invalid,
     65     * then this will be set to a failing value.
     66     * @stable ICU 64
     67     */
     68    CurrencyUnit(StringPiece isoCode, UErrorCode &ec);
     69 
     70    /**
     71     * Copy constructor
     72     * @stable ICU 3.0
     73     */
     74    CurrencyUnit(const CurrencyUnit& other);
     75 
     76    /**
     77     * Copy constructor from MeasureUnit. This constructor allows you to
     78     * restore a CurrencyUnit that was sliced to MeasureUnit.
     79     *
     80     * @param measureUnit The MeasureUnit to copy from.
     81     * @param ec Set to a failing value if the MeasureUnit is not a currency.
     82     * @stable ICU 60
     83     */
     84    CurrencyUnit(const MeasureUnit& measureUnit, UErrorCode &ec);
     85 
     86    /**
     87     * Assignment operator
     88     * @stable ICU 3.0
     89     */
     90    CurrencyUnit& operator=(const CurrencyUnit& other);
     91 
     92    /**
     93     * Return a polymorphic clone of this object.  The result will
     94     * have the same class as returned by getDynamicClassID().
     95     * @stable ICU 3.0
     96     */
     97    virtual CurrencyUnit* clone() const override;
     98 
     99    /**
    100     * Destructor
    101     * @stable ICU 3.0
    102     */
    103    virtual ~CurrencyUnit();
    104 
    105    /**
    106     * Returns a unique class ID for this object POLYMORPHICALLY.
    107     * This method implements a simple form of RTTI used by ICU.
    108     * @return The class ID for this object. All objects of a given
    109     * class have the same class ID.  Objects of other classes have
    110     * different class IDs.
    111     * @stable ICU 3.0
    112     */
    113    virtual UClassID getDynamicClassID() const override;
    114 
    115    /**
    116     * Returns the class ID for this class. This is used to compare to
    117     * the return value of getDynamicClassID().
    118     * @return The class ID for all objects of this class.
    119     * @stable ICU 3.0
    120     */
    121    static UClassID U_EXPORT2 getStaticClassID();
    122 
    123    /**
    124     * Return the ISO currency code of this object.
    125     * @stable ICU 3.0
    126     */
    127    inline const char16_t* getISOCurrency() const;
    128 
    129 private:
    130    /**
    131     * The ISO 4217 code of this object.
    132     */
    133    char16_t isoCode[4];
    134 };
    135 
    136 inline const char16_t* CurrencyUnit::getISOCurrency() const {
    137    return isoCode;
    138 }
    139 
    140 U_NAMESPACE_END
    141 
    142 #endif // !UCONFIG_NO_FORMATTING
    143 
    144 #endif /* U_SHOW_CPLUSPLUS_API */
    145 
    146 #endif // __CURRENCYUNIT_H__