ICU 72.1 72.1
tzrule.h
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1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4*******************************************************************************
5* Copyright (C) 2007-2008, International Business Machines Corporation and *
6* others. All Rights Reserved. *
7*******************************************************************************
8*/
9#ifndef TZRULE_H
10#define TZRULE_H
11
17#include "unicode/utypes.h"
18
19#if U_SHOW_CPLUSPLUS_API
20
21#if !UCONFIG_NO_FORMATTING
22
23#include "unicode/uobject.h"
24#include "unicode/unistr.h"
25#include "unicode/dtrule.h"
26
27U_NAMESPACE_BEGIN
28
37public:
42 virtual ~TimeZoneRule();
43
50 virtual TimeZoneRule* clone() const = 0;
51
59 virtual bool operator==(const TimeZoneRule& that) const;
60
68 virtual bool operator!=(const TimeZoneRule& that) const;
69
77
83 int32_t getRawOffset(void) const;
84
91 int32_t getDSTSavings(void) const;
92
101 virtual UBool isEquivalentTo(const TimeZoneRule& other) const;
102
114 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const = 0;
115
127 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const = 0;
128
143 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
144 UBool inclusive, UDate& result) const = 0;
145
160 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
161 UBool inclusive, UDate& result) const = 0;
162
163protected:
164
174 TimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
175
182
189
190private:
191 UnicodeString fName; // time name
192 int32_t fRawOffset; // UTC offset of the standard time in milliseconds
193 int32_t fDSTSavings; // DST saving amount in milliseconds
194};
195
203public:
213 InitialTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
214
221
227
234 virtual InitialTimeZoneRule* clone() const override;
235
242
250 virtual bool operator==(const TimeZoneRule& that) const override;
251
259 virtual bool operator!=(const TimeZoneRule& that) const override;
260
269 virtual UBool isEquivalentTo(const TimeZoneRule& that) const override;
270
282 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const override;
283
295 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const override;
296
311 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
312 UBool inclusive, UDate& result) const override;
313
328 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
329 UBool inclusive, UDate& result) const override;
330
331public:
343 static UClassID U_EXPORT2 getStaticClassID(void);
344
356 virtual UClassID getDynamicClassID(void) const override;
357};
358
367public:
372 static const int32_t MAX_YEAR;
373
390 AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
391 const DateTimeRule& dateTimeRule, int32_t startYear, int32_t endYear);
392
409 AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
410 DateTimeRule* dateTimeRule, int32_t startYear, int32_t endYear);
411
418
424
431 virtual AnnualTimeZoneRule* clone() const override;
432
439
447 virtual bool operator==(const TimeZoneRule& that) const override;
448
456 virtual bool operator!=(const TimeZoneRule& that) const override;
457
464 const DateTimeRule* getRule(void) const;
465
472 int32_t getStartYear(void) const;
473
480 int32_t getEndYear(void) const;
481
494 UBool getStartInYear(int32_t year, int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
495
504 virtual UBool isEquivalentTo(const TimeZoneRule& that) const override;
505
517 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const override;
518
530 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const override;
531
546 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
547 UBool inclusive, UDate& result) const override;
548
563 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
564 UBool inclusive, UDate& result) const override;
565
566
567private:
568 DateTimeRule* fDateTimeRule;
569 int32_t fStartYear;
570 int32_t fEndYear;
571
572public:
584 static UClassID U_EXPORT2 getStaticClassID(void);
585
597 virtual UClassID getDynamicClassID(void) const override;
598};
599
607public:
625 TimeArrayTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
626 const UDate* startTimes, int32_t numStartTimes, DateTimeRule::TimeRuleType timeRuleType);
627
634
640
647 virtual TimeArrayTimeZoneRule* clone() const override;
648
655
663 virtual bool operator==(const TimeZoneRule& that) const override;
664
672 virtual bool operator!=(const TimeZoneRule& that) const override;
673
683
693 UBool getStartTimeAt(int32_t index, UDate& result) const;
694
700 int32_t countStartTimes(void) const;
701
710 virtual UBool isEquivalentTo(const TimeZoneRule& that) const override;
711
723 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const override;
724
736 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const override;
737
752 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
753 UBool inclusive, UDate& result) const override;
754
769 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
770 UBool inclusive, UDate& result) const override;
771
772
773private:
774 enum { TIMEARRAY_STACK_BUFFER_SIZE = 32 };
775 UBool initStartTimes(const UDate source[], int32_t size, UErrorCode& ec);
776 UDate getUTC(UDate time, int32_t raw, int32_t dst) const;
777
778 DateTimeRule::TimeRuleType fTimeRuleType;
779 int32_t fNumStartTimes;
780 UDate* fStartTimes;
781 UDate fLocalStartTimes[TIMEARRAY_STACK_BUFFER_SIZE];
782
783public:
795 static UClassID U_EXPORT2 getStaticClassID(void);
796
808 virtual UClassID getDynamicClassID(void) const override;
809};
810
811
812U_NAMESPACE_END
813
814#endif /* #if !UCONFIG_NO_FORMATTING */
815
816#endif /* U_SHOW_CPLUSPLUS_API */
817
818#endif // TZRULE_H
819
820//eof
AnnualTimeZoneRule is a class used for representing a time zone rule which takes effect annually.
Definition: tzrule.h:366
virtual ~AnnualTimeZoneRule()
Destructor.
AnnualTimeZoneRule(const UnicodeString &name, int32_t rawOffset, int32_t dstSavings, DateTimeRule *dateTimeRule, int32_t startYear, int32_t endYear)
Constructs a AnnualTimeZoneRule with the name, the GMT offset of its standard time,...
static const int32_t MAX_YEAR
The constant representing the maximum year used for designating a rule is permanent.
Definition: tzrule.h:372
virtual UClassID getDynamicClassID(void) const override
Returns a unique class ID POLYMORPHICALLY.
AnnualTimeZoneRule & operator=(const AnnualTimeZoneRule &right)
Assignment operator.
virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const override
Gets the first time when this rule takes effect after the specified time.
UBool getStartInYear(int32_t year, int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const
Gets the time when this rule takes effect in the given year.
const DateTimeRule * getRule(void) const
Gets the start date/time rule used by this rule.
AnnualTimeZoneRule(const UnicodeString &name, int32_t rawOffset, int32_t dstSavings, const DateTimeRule &dateTimeRule, int32_t startYear, int32_t endYear)
Constructs a AnnualTimeZoneRule with the name, the GMT offset of its standard time,...
virtual UBool isEquivalentTo(const TimeZoneRule &that) const override
Returns if this rule represents the same rule and offsets as another.
int32_t getEndYear(void) const
Gets the end year when this rule takes effect.
int32_t getStartYear(void) const
Gets the first year when this rule takes effect.
static UClassID getStaticClassID(void)
Return the class ID for this class.
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the very first time when this rule takes effect.
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the final time when this rule takes effect.
virtual AnnualTimeZoneRule * clone() const override
Clone this AnnualTimeZoneRule object polymorphically.
virtual bool operator==(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically equal.
virtual bool operator!=(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically unequal.
virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const override
Gets the most recent time when this rule takes effect before the specified time.
AnnualTimeZoneRule(const AnnualTimeZoneRule &source)
Copy constructor.
DateTimeRule is a class representing a time in a year by a rule specified by month,...
Definition: dtrule.h:33
TimeRuleType
Time rule type constants.
Definition: dtrule.h:55
InitialTimeZoneRule represents a time zone rule representing a time zone effective from the beginning...
Definition: tzrule.h:202
InitialTimeZoneRule(const UnicodeString &name, int32_t rawOffset, int32_t dstSavings)
Constructs an InitialTimeZoneRule with the name, the GMT offset of its standard time and the amount o...
virtual bool operator==(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically equal.
static UClassID getStaticClassID(void)
Return the class ID for this class.
virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const override
Gets the first time when this rule takes effect after the specified time.
virtual InitialTimeZoneRule * clone() const override
Clone this InitialTimeZoneRule object polymorphically.
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the final time when this rule takes effect.
InitialTimeZoneRule & operator=(const InitialTimeZoneRule &right)
Assignment operator.
virtual bool operator!=(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically unequal.
virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const override
Gets the most recent time when this rule takes effect before the specified time.
InitialTimeZoneRule(const InitialTimeZoneRule &source)
Copy constructor.
virtual ~InitialTimeZoneRule()
Destructor.
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the very first time when this rule takes effect.
virtual UBool isEquivalentTo(const TimeZoneRule &that) const override
Returns if this rule represents the same rule and offsets as another.
virtual UClassID getDynamicClassID(void) const override
Returns a unique class ID POLYMORPHICALLY.
TimeArrayTimeZoneRule represents a time zone rule whose start times are defined by an array of millis...
Definition: tzrule.h:606
virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const override
Gets the first time when this rule takes effect after the specified time.
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the final time when this rule takes effect.
virtual ~TimeArrayTimeZoneRule()
Destructor.
DateTimeRule::TimeRuleType getTimeType(void) const
Gets the time type of the start times used by this rule.
TimeArrayTimeZoneRule(const UnicodeString &name, int32_t rawOffset, int32_t dstSavings, const UDate *startTimes, int32_t numStartTimes, DateTimeRule::TimeRuleType timeRuleType)
Constructs a TimeArrayTimeZoneRule with the name, the GMT offset of its standard time,...
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the very first time when this rule takes effect.
virtual UBool isEquivalentTo(const TimeZoneRule &that) const override
Returns if this rule represents the same rule and offsets as another.
virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const override
Gets the most recent time when this rule takes effect before the specified time.
UBool getStartTimeAt(int32_t index, UDate &result) const
Gets a start time at the index stored in this rule.
static UClassID getStaticClassID(void)
Return the class ID for this class.
virtual bool operator==(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically equal.
virtual UClassID getDynamicClassID(void) const override
Returns a unique class ID POLYMORPHICALLY.
TimeArrayTimeZoneRule & operator=(const TimeArrayTimeZoneRule &right)
Assignment operator.
TimeArrayTimeZoneRule(const TimeArrayTimeZoneRule &source)
Copy constructor.
virtual bool operator!=(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically unequal.
int32_t countStartTimes(void) const
Returns the number of start times stored in this rule.
virtual TimeArrayTimeZoneRule * clone() const override
Clone this TimeArrayTimeZoneRule object polymorphically.
TimeZoneRule is a class representing a rule for time zone.
Definition: tzrule.h:36
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const =0
Gets the very first time when this rule takes effect.
TimeZoneRule(const UnicodeString &name, int32_t rawOffset, int32_t dstSavings)
Constructs a TimeZoneRule with the name, the GMT offset of its standard time and the amount of daylig...
virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const =0
Gets the first time when this rule takes effect after the specified time.
virtual bool operator!=(const TimeZoneRule &that) const
Return true if the given TimeZoneRule objects are semantically unequal.
int32_t getRawOffset(void) const
Gets the standard time offset.
virtual ~TimeZoneRule()
Destructor.
virtual UBool isEquivalentTo(const TimeZoneRule &other) const
Returns if this rule represents the same rule and offsets as another.
virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings, UBool inclusive, UDate &result) const =0
Gets the most recent time when this rule takes effect before the specified time.
virtual bool operator==(const TimeZoneRule &that) const
Return true if the given TimeZoneRule objects are semantically equal.
int32_t getDSTSavings(void) const
Gets the amount of daylight saving delta time from the standard time.
TimeZoneRule & operator=(const TimeZoneRule &right)
Assignment operator.
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const =0
Gets the final time when this rule takes effect.
TimeZoneRule(const TimeZoneRule &source)
Copy constructor.
UnicodeString & getName(UnicodeString &name) const
Fills in "name" with the name of this time zone.
virtual TimeZoneRule * clone() const =0
Clone this TimeZoneRule object polymorphically.
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:296
C++ API: Rule for specifying date and time in an year.
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:269
C++ API: Unicode String.
C++ API: Common ICU base class UObject.
void * UClassID
UClassID is used to identify classes without using the compiler's RTTI.
Definition: uobject.h:96
Basic definitions for ICU, for both C and C++ APIs.
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
#define U_I18N_API
Set to export library symbols from inside the i18n library, and to import them from outside.
Definition: utypes.h:301
double UDate
Date and Time data type.
Definition: utypes.h:203