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gregocal.h
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1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 * Copyright (C) 1997-2013, International Business Machines Corporation and others.
5 * All Rights Reserved.
6 ********************************************************************************
7 *
8 * File GREGOCAL.H
9 *
10 * Modification History:
11 *
12 * Date Name Description
13 * 04/22/97 aliu Overhauled header.
14 * 07/28/98 stephen Sync with JDK 1.2
15 * 09/04/98 stephen Re-sync with JDK 8/31 putback
16 * 09/14/98 stephen Changed type of kOneDay, kOneWeek to double.
17 * Fixed bug in roll()
18 * 10/15/99 aliu Fixed j31, incorrect WEEK_OF_YEAR computation.
19 * Added documentation of WEEK_OF_YEAR computation.
20 * 10/15/99 aliu Fixed j32, cannot set date to Feb 29 2000 AD.
21 * {JDK bug 4210209 4209272}
22 * 11/07/2003 srl Update, clean up documentation.
23 ********************************************************************************
24 */
25
26 #ifndef GREGOCAL_H
27 #define GREGOCAL_H
28
29 #include "unicode/utypes.h"
30
31 #if !UCONFIG_NO_FORMATTING
32
33 #include "unicode/calendar.h"
34
40 U_NAMESPACE_BEGIN
41
151 class U_I18N_API GregorianCalendar: public Calendar {
152 public:
153
158 enum EEras {
159 BC,
160 AD
161 };
162
171 GregorianCalendar(UErrorCode& success);
172
183 GregorianCalendar(TimeZone* zoneToAdopt, UErrorCode& success);
184
194 GregorianCalendar(const TimeZone& zone, UErrorCode& success);
195
205 GregorianCalendar(const Locale& aLocale, UErrorCode& success);
206
218 GregorianCalendar(TimeZone* zoneToAdopt, const Locale& aLocale, UErrorCode& success);
219
230 GregorianCalendar(const TimeZone& zone, const Locale& aLocale, UErrorCode& success);
231
244 GregorianCalendar(int32_t year, int32_t month, int32_t date, UErrorCode& success);
245
260 GregorianCalendar(int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute, UErrorCode& success);
261
277 GregorianCalendar(int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute, int32_t second, UErrorCode& success);
278
283 virtual ~GregorianCalendar();
284
290 GregorianCalendar(const GregorianCalendar& source);
291
297 GregorianCalendar& operator=(const GregorianCalendar& right);
298
304 virtual Calendar* clone(void) const;
305
315 void setGregorianChange(UDate date, UErrorCode& success);
316
325 UDate getGregorianChange(void) const;
326
342 UBool isLeapYear(int32_t year) const;
343
351 virtual UBool isEquivalentTo(const Calendar& other) const;
352
364 virtual void roll(EDateFields field, int32_t amount, UErrorCode& status);
365
377 virtual void roll(UCalendarDateFields field, int32_t amount, UErrorCode& status);
378
379 #ifndef U_HIDE_DEPRECATED_API
380
387 int32_t getActualMinimum(EDateFields field) const;
388
397 int32_t getActualMinimum(EDateFields field, UErrorCode& status) const;
398 #endif /* U_HIDE_DEPRECATED_API */
399
408 int32_t getActualMinimum(UCalendarDateFields field, UErrorCode &status) const;
409
410 #ifndef U_HIDE_DEPRECATED_API
411
420 int32_t getActualMaximum(EDateFields field) const;
421 #endif /* U_HIDE_DEPRECATED_API */
422
433 virtual int32_t getActualMaximum(UCalendarDateFields field, UErrorCode& status) const;
434
444 virtual UBool inDaylightTime(UErrorCode& status) const;
445
446 public:
447
458 virtual UClassID getDynamicClassID(void) const;
459
471 static UClassID U_EXPORT2 getStaticClassID(void);
472
483 virtual const char * getType() const;
484
485 private:
486 GregorianCalendar(); // default constructor not implemented
487
488 protected:
495 virtual int32_t internalGetEra() const;
496
510 virtual int32_t handleComputeMonthStart(int32_t eyear, int32_t month,
511 UBool useMonth) const;
512
521 virtual int32_t handleComputeJulianDay(UCalendarDateFields bestField) ;
522
530 virtual int32_t handleGetMonthLength(int32_t extendedYear, int32_t month) const;
531
539 virtual int32_t handleGetYearLength(int32_t eyear) const;
540
547 virtual int32_t monthLength(int32_t month) const;
548
556 virtual int32_t monthLength(int32_t month, int32_t year) const;
557
558 #ifndef U_HIDE_INTERNAL_API
559
565 int32_t yearLength(int32_t year) const;
566
572 int32_t yearLength(void) const;
573
581 void pinDayOfMonth(void);
582 #endif /* U_HIDE_INTERNAL_API */
583
591 virtual UDate getEpochDay(UErrorCode& status);
592
614 virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const;
615
624 virtual int32_t handleGetExtendedYear();
625
634 virtual int32_t handleGetExtendedYearFromWeekFields(int32_t yearWoy, int32_t woy);
635
636
652 virtual void handleComputeFields(int32_t julianDay, UErrorCode &status);
653
654 private:
662 static double computeJulianDayOfYear(UBool isGregorian, int32_t year,
663 UBool& isLeap);
664
669 UBool validateFields(void) const;
670
674 UBool boundsCheck(int32_t value, UCalendarDateFields field) const;
675
685 int32_t aggregateStamp(int32_t stamp_a, int32_t stamp_b);
686
694 UDate fGregorianCutover;
695
699 int32_t fCutoverJulianDay;
700
706 UDate fNormalizedGregorianCutover;// = gregorianCutover;
707
712 int32_t fGregorianCutoverYear;// = 1582;
713
718 int32_t fGregorianCutoverJulianDay;// = 2299161;
719
727 static double millisToJulianDay(UDate millis);
728
736 static UDate julianDayToMillis(double julian);
737
742 UBool fIsGregorian;
743
749 UBool fInvertGregorian;
750
751
752 public: // internal implementation
753
758 virtual UBool haveDefaultCentury() const;
759
764 virtual UDate defaultCenturyStart() const;
765
770 virtual int32_t defaultCenturyStartYear() const;
771 };
772
773 U_NAMESPACE_END
774
775 #endif /* #if !UCONFIG_NO_FORMATTING */
776
777 #endif // _GREGOCAL
778 //eof
779
icu::Calendar::handleGetMonthLength
virtual int32_t handleGetMonthLength(int32_t extendedYear, int32_t month) const
Return the number of days in the given month of the given extended year of this calendar system...
UCalendarDateFields
UCalendarDateFields
Possible fields in a UCalendar.
Definition: ucal.h:185
icu::Calendar::defaultCenturyStartYear
virtual int32_t defaultCenturyStartYear() const =0
icu::GregorianCalendar::EEras
EEras
Useful constants for GregorianCalendar and TimeZone.
Definition: gregocal.h:158
icu::Calendar::handleComputeFields
virtual void handleComputeFields(int32_t julianDay, UErrorCode &status)
Subclasses may override this method to compute several fields specific to each calendar system...
icu::Calendar
Calendar is an abstract base class for converting between a UDate object and a set of integer fields ...
Definition: calendar.h:202
UDate
double UDate
Date and Time data type.
Definition: utypes.h:203
icu::Calendar::getDynamicClassID
virtual UClassID getDynamicClassID(void) const =0
Returns a unique class ID POLYMORPHICALLY.
UClassID
void * UClassID
UClassID is used to identify classes without using the compiler&#39;s RTTI.
Definition: uobject.h:93
icu::Calendar::getActualMaximum
int32_t getActualMaximum(EDateFields field, UErrorCode &status) const
Return the maximum value that this field could have, given the current date.
icu::Calendar::handleComputeMonthStart
virtual int32_t handleComputeMonthStart(int32_t eyear, int32_t month, UBool useMonth) const =0
Return the Julian day number of day before the first day of the given month in the given extended yea...
icu::TimeZone
TimeZone represents a time zone offset, and also figures out daylight savings.
Definition: timezone.h:131
icu::Calendar::isEquivalentTo
virtual UBool isEquivalentTo(const Calendar &other) const
Returns TRUE if the given Calendar object is equivalent to this one.
icu::Calendar::handleGetYearLength
virtual int32_t handleGetYearLength(int32_t eyear) const
Return the number of days in the given extended year of this calendar system.
icu::Calendar::ELimitType
ELimitType
Limit enums.
Definition: calendar.h:1610
U_I18N_API
#define U_I18N_API
Set to export library symbols from inside the i18n library, and to import them from outside...
Definition: utypes.h:360
U_NAMESPACE_BEGIN
#define U_NAMESPACE_BEGIN
This is used to begin a declaration of a public ICU C++ API.
Definition: uversion.h:131
icu::Calendar::clone
virtual Calendar * clone(void) const =0
Create and return a polymorphic copy of this calendar.
calendar.h
C++ API: Calendar object.
icu::Calendar::haveDefaultCentury
virtual UBool haveDefaultCentury() const =0
icu::Calendar::getType
virtual const char * getType() const =0
Returns the calendar type name string for this Calendar object.
icu::Calendar::getActualMinimum
int32_t getActualMinimum(EDateFields field, UErrorCode &status) const
Return the minimum value that this field could have, given the current date.
icu::Calendar::roll
void roll(EDateFields field, UBool up, UErrorCode &status)
Time Field Rolling function.
Definition: calendar.h:2517
icu::Calendar::handleComputeJulianDay
virtual int32_t handleComputeJulianDay(UCalendarDateFields bestField)
Subclasses may override this.
icu::Calendar::inDaylightTime
virtual UBool inDaylightTime(UErrorCode &status) const =0
Queries if the current date for this Calendar is in Daylight Savings Time.
U_NAMESPACE_END
#define U_NAMESPACE_END
This is used to end a declaration of a public ICU C++ API.
Definition: uversion.h:132
icu::Calendar::operator=
Calendar & operator=(const Calendar &right)
Default assignment operator.
icu::GregorianCalendar
Concrete class which provides the standard calendar used by most of the world.
Definition: gregocal.h:151
UErrorCode
UErrorCode
Error code to replace exception handling, so that the code is compatible with all C++ compilers...
Definition: utypes.h:396
icu::Calendar::EDateFields
EDateFields
Field IDs for date and time.
Definition: calendar.h:211
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
icu::Calendar::handleGetExtendedYearFromWeekFields
virtual int32_t handleGetExtendedYearFromWeekFields(int32_t yearWoy, int32_t woy)
Subclasses must override this to convert from week fields (YEAR_WOY and WEEK_OF_YEAR) to an extended ...
icu::Calendar::defaultCenturyStart
virtual UDate defaultCenturyStart() const =0
icu::Calendar::handleGetExtendedYear
virtual int32_t handleGetExtendedYear()=0
Return the extended year defined by the current fields.
icu::Calendar::handleGetLimit
virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const =0
Subclass API for defining limits of different types.
UBool
int8_t UBool
The ICU boolean type.
Definition: umachine.h:259
icu::Locale
A Locale object represents a specific geographical, political, or cultural region.
Definition: locid.h:187