1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/japancal.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,217 @@
1.4 +/*
1.5 + ********************************************************************************
1.6 + * Copyright (C) 2003-2008, International Business Machines Corporation
1.7 + * and others. All Rights Reserved.
1.8 + ********************************************************************************
1.9 + *
1.10 + * File JAPANCAL.H
1.11 + *
1.12 + * Modification History:
1.13 + *
1.14 + * Date Name Description
1.15 + * 05/13/2003 srl copied from gregocal.h
1.16 + ********************************************************************************
1.17 + */
1.18 +
1.19 +#ifndef JAPANCAL_H
1.20 +#define JAPANCAL_H
1.21 +
1.22 +#include "unicode/utypes.h"
1.23 +
1.24 +#if !UCONFIG_NO_FORMATTING
1.25 +
1.26 +#include "unicode/calendar.h"
1.27 +#include "unicode/gregocal.h"
1.28 +
1.29 +U_NAMESPACE_BEGIN
1.30 +
1.31 +/**
1.32 + * Concrete class which provides the Japanese calendar.
1.33 + * <P>
1.34 + * <code>JapaneseCalendar</code> is a subclass of <code>GregorianCalendar</code>
1.35 + * that numbers years and eras based on the reigns of the Japanese emperors.
1.36 + * The Japanese calendar is identical to the Gregorian calendar in all respects
1.37 + * except for the year and era. The ascension of each emperor to the throne
1.38 + * begins a new era, and the years of that era are numbered starting with the
1.39 + * year of ascension as year 1.
1.40 + * <p>
1.41 + * Note that in the year of an imperial ascension, there are two possible sets
1.42 + * of year and era values: that for the old era and for the new. For example, a
1.43 + * new era began on January 7, 1989 AD. Strictly speaking, the first six days
1.44 + * of that year were in the Showa era, e.g. "January 6, 64 Showa", while the rest
1.45 + * of the year was in the Heisei era, e.g. "January 7, 1 Heisei". This class
1.46 + * handles this distinction correctly when computing dates. However, in lenient
1.47 + * mode either form of date is acceptable as input.
1.48 + * <p>
1.49 + * In modern times, eras have started on January 8, 1868 AD, Gregorian (Meiji),
1.50 + * July 30, 1912 (Taisho), December 25, 1926 (Showa), and January 7, 1989 (Heisei). Constants
1.51 + * for these eras, suitable for use in the <code>UCAL_ERA</code> field, are provided
1.52 + * in this class. Note that the <em>number</em> used for each era is more or
1.53 + * less arbitrary. Currently, the era starting in 1053 AD is era #0; however this
1.54 + * may change in the future as we add more historical data. Use the predefined
1.55 + * constants rather than using actual, absolute numbers.
1.56 + * <p>
1.57 + * @internal
1.58 + */
1.59 +class JapaneseCalendar : public GregorianCalendar {
1.60 +public:
1.61 +
1.62 + /**
1.63 + * Useful constants for JapaneseCalendar.
1.64 + * @internal
1.65 + */
1.66 + U_I18N_API static uint32_t U_EXPORT2 getCurrentEra(void); // the current era
1.67 +
1.68 + /**
1.69 + * Constructs a JapaneseCalendar based on the current time in the default time zone
1.70 + * with the given locale.
1.71 + *
1.72 + * @param aLocale The given locale.
1.73 + * @param success Indicates the status of JapaneseCalendar object construction.
1.74 + * Returns U_ZERO_ERROR if constructed successfully.
1.75 + * @stable ICU 2.0
1.76 + */
1.77 + JapaneseCalendar(const Locale& aLocale, UErrorCode& success);
1.78 +
1.79 +
1.80 + /**
1.81 + * Destructor
1.82 + * @internal
1.83 + */
1.84 + virtual ~JapaneseCalendar();
1.85 +
1.86 + /**
1.87 + * Copy constructor
1.88 + * @param source the object to be copied.
1.89 + * @internal
1.90 + */
1.91 + JapaneseCalendar(const JapaneseCalendar& source);
1.92 +
1.93 + /**
1.94 + * Default assignment operator
1.95 + * @param right the object to be copied.
1.96 + * @internal
1.97 + */
1.98 + JapaneseCalendar& operator=(const JapaneseCalendar& right);
1.99 +
1.100 + /**
1.101 + * Create and return a polymorphic copy of this calendar.
1.102 + * @return return a polymorphic copy of this calendar.
1.103 + * @internal
1.104 + */
1.105 + virtual Calendar* clone(void) const;
1.106 +
1.107 + /**
1.108 + * Return the extended year defined by the current fields. In the
1.109 + * Japanese calendar case, this is equal to the equivalent extended Gregorian year.
1.110 + * @internal
1.111 + */
1.112 + virtual int32_t handleGetExtendedYear();
1.113 +
1.114 + /**
1.115 + * Return the maximum value that this field could have, given the current date.
1.116 + * @internal
1.117 + */
1.118 + virtual int32_t getActualMaximum(UCalendarDateFields field, UErrorCode& status) const;
1.119 +
1.120 +
1.121 +public:
1.122 + /**
1.123 + * Override Calendar Returns a unique class ID POLYMORPHICALLY. Pure virtual
1.124 + * override. This method is to implement a simple version of RTTI, since not all C++
1.125 + * compilers support genuine RTTI. Polymorphic operator==() and clone() methods call
1.126 + * this method.
1.127 + *
1.128 + * @return The class ID for this object. All objects of a given class have the
1.129 + * same class ID. Objects of other classes have different class IDs.
1.130 + * @internal
1.131 + */
1.132 + virtual UClassID getDynamicClassID(void) const;
1.133 +
1.134 + /**
1.135 + * Return the class ID for this class. This is useful only for comparing to a return
1.136 + * value from getDynamicClassID(). For example:
1.137 + *
1.138 + * Base* polymorphic_pointer = createPolymorphicObject();
1.139 + * if (polymorphic_pointer->getDynamicClassID() ==
1.140 + * Derived::getStaticClassID()) ...
1.141 + *
1.142 + * @return The class ID for all objects of this class.
1.143 + * @internal
1.144 + */
1.145 + U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void);
1.146 +
1.147 + /**
1.148 + * return the calendar type, "japanese".
1.149 + *
1.150 + * @return calendar type
1.151 + * @internal
1.152 + */
1.153 + virtual const char * getType() const;
1.154 +
1.155 + /**
1.156 + * @return FALSE - no default century in Japanese
1.157 + * @internal
1.158 + */
1.159 + virtual UBool haveDefaultCentury() const;
1.160 +
1.161 + /**
1.162 + * Not used - no default century.
1.163 + * @internal
1.164 + */
1.165 + virtual UDate defaultCenturyStart() const;
1.166 + /**
1.167 + * Not used - no default century.
1.168 + * @internal
1.169 + */
1.170 + virtual int32_t defaultCenturyStartYear() const;
1.171 +
1.172 +private:
1.173 + JapaneseCalendar(); // default constructor not implemented
1.174 +
1.175 +protected:
1.176 + /**
1.177 + * Calculate the era for internal computation
1.178 + * @internal
1.179 + */
1.180 + virtual int32_t internalGetEra() const;
1.181 +
1.182 + /**
1.183 + * Compute fields from the JD
1.184 + * @internal
1.185 + */
1.186 + virtual void handleComputeFields(int32_t julianDay, UErrorCode& status);
1.187 +
1.188 + /**
1.189 + * Calculate the limit for a specified type of limit and field
1.190 + * @internal
1.191 + */
1.192 + virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const;
1.193 +
1.194 + /***
1.195 + * Called by computeJulianDay. Returns the default month (0-based) for the year,
1.196 + * taking year and era into account. Will return the first month of the given era, if
1.197 + * the current year is an ascension year.
1.198 + * @param eyear the extended year
1.199 + * @internal
1.200 + */
1.201 + virtual int32_t getDefaultMonthInYear(int32_t eyear);
1.202 +
1.203 + /***
1.204 + * Called by computeJulianDay. Returns the default day (1-based) for the month,
1.205 + * taking currently-set year and era into account. Will return the first day of the given
1.206 + * era, if the current month is an ascension year and month.
1.207 + * @param eyear the extended year
1.208 + * @param mon the month in the year
1.209 + * @internal
1.210 + */
1.211 + virtual int32_t getDefaultDayInMonth(int32_t eyear, int32_t month);
1.212 +};
1.213 +
1.214 +U_NAMESPACE_END
1.215 +
1.216 +#endif /* #if !UCONFIG_NO_FORMATTING */
1.217 +
1.218 +#endif
1.219 +//eof
1.220 +
