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comparison: intl/icu/source/i18n/buddhcal.h
intl/icu/source/i18n/buddhcal.h
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| 1 /* | |
| 2 ******************************************************************************** | |
| 3 * Copyright (C) 2003-2013, International Business Machines Corporation | |
| 4 * and others. All Rights Reserved. | |
| 5 ******************************************************************************** | |
| 6 * | |
| 7 * File BUDDHCAL.H | |
| 8 * | |
| 9 * Modification History: | |
| 10 * | |
| 11 * Date Name Description | |
| 12 * 05/13/2003 srl copied from gregocal.h | |
| 13 ******************************************************************************** | |
| 14 */ | |
| 15 | |
| 16 #ifndef BUDDHCAL_H | |
| 17 #define BUDDHCAL_H | |
| 18 | |
| 19 #include "unicode/utypes.h" | |
| 20 | |
| 21 #if !UCONFIG_NO_FORMATTING | |
| 22 | |
| 23 #include "unicode/calendar.h" | |
| 24 #include "unicode/gregocal.h" | |
| 25 | |
| 26 U_NAMESPACE_BEGIN | |
| 27 | |
| 28 /** | |
| 29 * Concrete class which provides the Buddhist calendar. | |
| 30 * <P> | |
| 31 * <code>BuddhistCalendar</code> is a subclass of <code>GregorianCalendar</code> | |
| 32 * that numbers years since the birth of the Buddha. This is the civil calendar | |
| 33 * in some predominantly Buddhist countries such as Thailand, and it is used for | |
| 34 * religious purposes elsewhere. | |
| 35 * <p> | |
| 36 * The Buddhist calendar is identical to the Gregorian calendar in all respects | |
| 37 * except for the year and era. Years are numbered since the birth of the | |
| 38 * Buddha in 543 BC (Gregorian), so that 1 AD (Gregorian) is equivalent to 544 | |
| 39 * BE (Buddhist Era) and 1998 AD is 2541 BE. | |
| 40 * <p> | |
| 41 * The Buddhist Calendar has only one allowable era: <code>BE</code>. If the | |
| 42 * calendar is not in lenient mode (see <code>setLenient</code>), dates before | |
| 43 * 1/1/1 BE are rejected as an illegal argument. | |
| 44 * <p> | |
| 45 * @internal | |
| 46 */ | |
| 47 class BuddhistCalendar : public GregorianCalendar { | |
| 48 public: | |
| 49 | |
| 50 /** | |
| 51 * Useful constants for BuddhistCalendar. Only one Era. | |
| 52 * @internal | |
| 53 */ | |
| 54 enum EEras { | |
| 55 BE | |
| 56 }; | |
| 57 | |
| 58 /** | |
| 59 * Constructs a BuddhistCalendar based on the current time in the default time zone | |
| 60 * with the given locale. | |
| 61 * | |
| 62 * @param aLocale The given locale. | |
| 63 * @param success Indicates the status of BuddhistCalendar object construction. | |
| 64 * Returns U_ZERO_ERROR if constructed successfully. | |
| 65 * @internal | |
| 66 */ | |
| 67 BuddhistCalendar(const Locale& aLocale, UErrorCode& success); | |
| 68 | |
| 69 | |
| 70 /** | |
| 71 * Destructor | |
| 72 * @internal | |
| 73 */ | |
| 74 virtual ~BuddhistCalendar(); | |
| 75 | |
| 76 /** | |
| 77 * Copy constructor | |
| 78 * @param source the object to be copied. | |
| 79 * @internal | |
| 80 */ | |
| 81 BuddhistCalendar(const BuddhistCalendar& source); | |
| 82 | |
| 83 /** | |
| 84 * Default assignment operator | |
| 85 * @param right the object to be copied. | |
| 86 * @internal | |
| 87 */ | |
| 88 BuddhistCalendar& operator=(const BuddhistCalendar& right); | |
| 89 | |
| 90 /** | |
| 91 * Create and return a polymorphic copy of this calendar. | |
| 92 * @return return a polymorphic copy of this calendar. | |
| 93 * @internal | |
| 94 */ | |
| 95 virtual Calendar* clone(void) const; | |
| 96 | |
| 97 public: | |
| 98 /** | |
| 99 * Override Calendar Returns a unique class ID POLYMORPHICALLY. Pure virtual | |
| 100 * override. This method is to implement a simple version of RTTI, since not all C++ | |
| 101 * compilers support genuine RTTI. Polymorphic operator==() and clone() methods call | |
| 102 * this method. | |
| 103 * | |
| 104 * @return The class ID for this object. All objects of a given class have the | |
| 105 * same class ID. Objects of other classes have different class IDs. | |
| 106 * @internal | |
| 107 */ | |
| 108 virtual UClassID getDynamicClassID(void) const; | |
| 109 | |
| 110 /** | |
| 111 * Return the class ID for this class. This is useful only for comparing to a return | |
| 112 * value from getDynamicClassID(). For example: | |
| 113 * | |
| 114 * Base* polymorphic_pointer = createPolymorphicObject(); | |
| 115 * if (polymorphic_pointer->getDynamicClassID() == | |
| 116 * Derived::getStaticClassID()) ... | |
| 117 * | |
| 118 * @return The class ID for all objects of this class. | |
| 119 * @internal | |
| 120 */ | |
| 121 U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void); | |
| 122 | |
| 123 /** | |
| 124 * return the calendar type, "buddhist". | |
| 125 * | |
| 126 * @return calendar type | |
| 127 * @internal | |
| 128 */ | |
| 129 virtual const char * getType() const; | |
| 130 | |
| 131 private: | |
| 132 BuddhistCalendar(); // default constructor not implemented | |
| 133 | |
| 134 protected: | |
| 135 /** | |
| 136 * Return the extended year defined by the current fields. This will | |
| 137 * use the UCAL_EXTENDED_YEAR field or the UCAL_YEAR and supra-year fields (such | |
| 138 * as UCAL_ERA) specific to the calendar system, depending on which set of | |
| 139 * fields is newer. | |
| 140 * @return the extended year | |
| 141 * @internal | |
| 142 */ | |
| 143 virtual int32_t handleGetExtendedYear(); | |
| 144 /** | |
| 145 * Subclasses may override this method to compute several fields | |
| 146 * specific to each calendar system. | |
| 147 * @internal | |
| 148 */ | |
| 149 virtual void handleComputeFields(int32_t julianDay, UErrorCode& status); | |
| 150 /** | |
| 151 * Subclass API for defining limits of different types. | |
| 152 * @param field one of the field numbers | |
| 153 * @param limitType one of <code>MINIMUM</code>, <code>GREATEST_MINIMUM</code>, | |
| 154 * <code>LEAST_MAXIMUM</code>, or <code>MAXIMUM</code> | |
| 155 * @internal | |
| 156 */ | |
| 157 virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const; | |
| 158 /** | |
| 159 * Return the Julian day number of day before the first day of the | |
| 160 * given month in the given extended year. Subclasses should override | |
| 161 * this method to implement their calendar system. | |
| 162 * @param eyear the extended year | |
| 163 * @param month the zero-based month, or 0 if useMonth is false | |
| 164 * @param useMonth if false, compute the day before the first day of | |
| 165 * the given year, otherwise, compute the day before the first day of | |
| 166 * the given month | |
| 167 * @param return the Julian day number of the day before the first | |
| 168 * day of the given month and year | |
| 169 * @internal | |
| 170 */ | |
| 171 virtual int32_t handleComputeMonthStart(int32_t eyear, int32_t month, | |
| 172 UBool useMonth) const; | |
| 173 | |
| 174 /** | |
| 175 * Returns TRUE because the Buddhist Calendar does have a default century | |
| 176 * @internal | |
| 177 */ | |
| 178 virtual UBool haveDefaultCentury() const; | |
| 179 | |
| 180 /** | |
| 181 * Returns the date of the start of the default century | |
| 182 * @return start of century - in milliseconds since epoch, 1970 | |
| 183 * @internal | |
| 184 */ | |
| 185 virtual UDate defaultCenturyStart() const; | |
| 186 | |
| 187 /** | |
| 188 * Returns the year in which the default century begins | |
| 189 * @internal | |
| 190 */ | |
| 191 virtual int32_t defaultCenturyStartYear() const; | |
| 192 }; | |
| 193 | |
| 194 U_NAMESPACE_END | |
| 195 | |
| 196 #endif /* #if !UCONFIG_NO_FORMATTING */ | |
| 197 | |
| 198 #endif // _GREGOCAL | |
| 199 //eof | |
| 200 |
