ICU 75.1 75.1

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
27 U_NAMESPACE_BEGIN
28
36 class U_I18N_API TimeZoneRule : public UObject {
37 public:
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
76 UnicodeString& getName(UnicodeString& name) const;
77
83 int32_t getRawOffset() const;
84
91 int32_t getDSTSavings() 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
163 protected:
164
174 TimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
175
181 TimeZoneRule(const TimeZoneRule& source);
182
188 TimeZoneRule& operator=(const TimeZoneRule& right);
189
190 private:
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
202 class U_I18N_API InitialTimeZoneRule : public TimeZoneRule {
203 public:
213 InitialTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
214
220 InitialTimeZoneRule(const InitialTimeZoneRule& source);
221
226 virtual ~InitialTimeZoneRule();
227
234 virtual InitialTimeZoneRule* clone() const override;
235
241 InitialTimeZoneRule& operator=(const InitialTimeZoneRule& right);
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
331 public:
343 static UClassID U_EXPORT2 getStaticClassID();
344
356 virtual UClassID getDynamicClassID() const override;
357 };
358
366 class U_I18N_API AnnualTimeZoneRule : public TimeZoneRule {
367 public:
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
417 AnnualTimeZoneRule(const AnnualTimeZoneRule& source);
418
423 virtual ~AnnualTimeZoneRule();
424
431 virtual AnnualTimeZoneRule* clone() const override;
432
438 AnnualTimeZoneRule& operator=(const AnnualTimeZoneRule& right);
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() const;
465
472 int32_t getStartYear() const;
473
480 int32_t getEndYear() 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
567 private:
568 DateTimeRule* fDateTimeRule;
569 int32_t fStartYear;
570 int32_t fEndYear;
571
572 public:
584 static UClassID U_EXPORT2 getStaticClassID();
585
597 virtual UClassID getDynamicClassID() const override;
598 };
599
606 class U_I18N_API TimeArrayTimeZoneRule : public TimeZoneRule {
607 public:
625 TimeArrayTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
626 const UDate* startTimes, int32_t numStartTimes, DateTimeRule::TimeRuleType timeRuleType);
627
633 TimeArrayTimeZoneRule(const TimeArrayTimeZoneRule& source);
634
639 virtual ~TimeArrayTimeZoneRule();
640
647 virtual TimeArrayTimeZoneRule* clone() const override;
648
654 TimeArrayTimeZoneRule& operator=(const TimeArrayTimeZoneRule& right);
655
663 virtual bool operator==(const TimeZoneRule& that) const override;
664
672 virtual bool operator!=(const TimeZoneRule& that) const override;
673
682 DateTimeRule::TimeRuleType getTimeType() const;
683
693 UBool getStartTimeAt(int32_t index, UDate& result) const;
694
700 int32_t countStartTimes() 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
773 private:
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
783 public:
795 static UClassID U_EXPORT2 getStaticClassID();
796
808 virtual UClassID getDynamicClassID() const override;
809 };
810
811
812 U_NAMESPACE_END
813
814 #endif /* #if !UCONFIG_NO_FORMATTING */
815
816 #endif /* U_SHOW_CPLUSPLUS_API */
817
818 #endif // TZRULE_H
819
820 //eof
icu::AnnualTimeZoneRule
AnnualTimeZoneRule is a class used for representing a time zone rule which takes effect annually.
Definition: tzrule.h:366
icu::AnnualTimeZoneRule::~AnnualTimeZoneRule
virtual ~AnnualTimeZoneRule()
Destructor.
icu::AnnualTimeZoneRule::AnnualTimeZoneRule
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,...
icu::AnnualTimeZoneRule::MAX_YEAR
static const int32_t MAX_YEAR
The constant representing the maximum year used for designating a rule is permanent.
Definition: tzrule.h:372
icu::AnnualTimeZoneRule::getNextStart
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.
icu::AnnualTimeZoneRule::getEndYear
int32_t getEndYear() const
Gets the end year when this rule takes effect.
icu::AnnualTimeZoneRule::getStartInYear
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.
icu::AnnualTimeZoneRule::clone
virtual AnnualTimeZoneRule * clone() const override
Clone this AnnualTimeZoneRule object polymorphically.
icu::AnnualTimeZoneRule::AnnualTimeZoneRule
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,...
icu::AnnualTimeZoneRule::operator=
AnnualTimeZoneRule & operator=(const AnnualTimeZoneRule &right)
Assignment operator.
icu::AnnualTimeZoneRule::isEquivalentTo
virtual UBool isEquivalentTo(const TimeZoneRule &that) const override
Returns if this rule represents the same rule and offsets as another.
icu::AnnualTimeZoneRule::getStartYear
int32_t getStartYear() const
Gets the first year when this rule takes effect.
icu::AnnualTimeZoneRule::getRule
const DateTimeRule * getRule() const
Gets the start date/time rule used by this rule.
icu::AnnualTimeZoneRule::getDynamicClassID
virtual UClassID getDynamicClassID() const override
Returns a unique class ID POLYMORPHICALLY.
icu::AnnualTimeZoneRule::getFirstStart
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the very first time when this rule takes effect.
icu::AnnualTimeZoneRule::getFinalStart
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the final time when this rule takes effect.
icu::AnnualTimeZoneRule::getStaticClassID
static UClassID getStaticClassID()
Return the class ID for this class.
icu::AnnualTimeZoneRule::operator==
virtual bool operator==(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically equal.
icu::AnnualTimeZoneRule::operator!=
virtual bool operator!=(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically unequal.
icu::AnnualTimeZoneRule::getPreviousStart
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.
icu::AnnualTimeZoneRule::AnnualTimeZoneRule
AnnualTimeZoneRule(const AnnualTimeZoneRule &source)
Copy constructor.
icu::DateTimeRule
DateTimeRule is a class representing a time in a year by a rule specified by month,...
Definition: dtrule.h:33
icu::DateTimeRule::TimeRuleType
TimeRuleType
Time rule type constants.
Definition: dtrule.h:55
icu::InitialTimeZoneRule
InitialTimeZoneRule represents a time zone rule representing a time zone effective from the beginning...
Definition: tzrule.h:202
icu::InitialTimeZoneRule::InitialTimeZoneRule
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...
icu::InitialTimeZoneRule::operator==
virtual bool operator==(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically equal.
icu::InitialTimeZoneRule::operator=
InitialTimeZoneRule & operator=(const InitialTimeZoneRule &right)
Assignment operator.
icu::InitialTimeZoneRule::getStaticClassID
static UClassID getStaticClassID()
Return the class ID for this class.
icu::InitialTimeZoneRule::getNextStart
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.
icu::InitialTimeZoneRule::getDynamicClassID
virtual UClassID getDynamicClassID() const override
Returns a unique class ID POLYMORPHICALLY.
icu::InitialTimeZoneRule::clone
virtual InitialTimeZoneRule * clone() const override
Clone this InitialTimeZoneRule object polymorphically.
icu::InitialTimeZoneRule::getFinalStart
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the final time when this rule takes effect.
icu::InitialTimeZoneRule::operator!=
virtual bool operator!=(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically unequal.
icu::InitialTimeZoneRule::getPreviousStart
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.
icu::InitialTimeZoneRule::InitialTimeZoneRule
InitialTimeZoneRule(const InitialTimeZoneRule &source)
Copy constructor.
icu::InitialTimeZoneRule::~InitialTimeZoneRule
virtual ~InitialTimeZoneRule()
Destructor.
icu::InitialTimeZoneRule::getFirstStart
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the very first time when this rule takes effect.
icu::InitialTimeZoneRule::isEquivalentTo
virtual UBool isEquivalentTo(const TimeZoneRule &that) const override
Returns if this rule represents the same rule and offsets as another.
icu::TimeArrayTimeZoneRule
TimeArrayTimeZoneRule represents a time zone rule whose start times are defined by an array of millis...
Definition: tzrule.h:606
icu::TimeArrayTimeZoneRule::getNextStart
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.
icu::TimeArrayTimeZoneRule::getFinalStart
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the final time when this rule takes effect.
icu::TimeArrayTimeZoneRule::~TimeArrayTimeZoneRule
virtual ~TimeArrayTimeZoneRule()
Destructor.
icu::TimeArrayTimeZoneRule::clone
virtual TimeArrayTimeZoneRule * clone() const override
Clone this TimeArrayTimeZoneRule object polymorphically.
icu::TimeArrayTimeZoneRule::TimeArrayTimeZoneRule
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,...
icu::TimeArrayTimeZoneRule::getFirstStart
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const override
Gets the very first time when this rule takes effect.
icu::TimeArrayTimeZoneRule::isEquivalentTo
virtual UBool isEquivalentTo(const TimeZoneRule &that) const override
Returns if this rule represents the same rule and offsets as another.
icu::TimeArrayTimeZoneRule::getPreviousStart
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.
icu::TimeArrayTimeZoneRule::getStartTimeAt
UBool getStartTimeAt(int32_t index, UDate &result) const
Gets a start time at the index stored in this rule.
icu::TimeArrayTimeZoneRule::operator==
virtual bool operator==(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically equal.
icu::TimeArrayTimeZoneRule::getTimeType
DateTimeRule::TimeRuleType getTimeType() const
Gets the time type of the start times used by this rule.
icu::TimeArrayTimeZoneRule::getDynamicClassID
virtual UClassID getDynamicClassID() const override
Returns a unique class ID POLYMORPHICALLY.
icu::TimeArrayTimeZoneRule::countStartTimes
int32_t countStartTimes() const
Returns the number of start times stored in this rule.
icu::TimeArrayTimeZoneRule::TimeArrayTimeZoneRule
TimeArrayTimeZoneRule(const TimeArrayTimeZoneRule &source)
Copy constructor.
icu::TimeArrayTimeZoneRule::getStaticClassID
static UClassID getStaticClassID()
Return the class ID for this class.
icu::TimeArrayTimeZoneRule::operator!=
virtual bool operator!=(const TimeZoneRule &that) const override
Return true if the given TimeZoneRule objects are semantically unequal.
icu::TimeArrayTimeZoneRule::operator=
TimeArrayTimeZoneRule & operator=(const TimeArrayTimeZoneRule &right)
Assignment operator.
icu::TimeZoneRule
TimeZoneRule is a class representing a rule for time zone.
Definition: tzrule.h:36
icu::TimeZoneRule::getFirstStart
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const =0
Gets the very first time when this rule takes effect.
icu::TimeZoneRule::getRawOffset
int32_t getRawOffset() const
Gets the standard time offset.
icu::TimeZoneRule::getName
UnicodeString & getName(UnicodeString &name) const
Fills in "name" with the name of this time zone.
icu::TimeZoneRule::TimeZoneRule
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...
icu::TimeZoneRule::getNextStart
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.
icu::TimeZoneRule::operator!=
virtual bool operator!=(const TimeZoneRule &that) const
Return true if the given TimeZoneRule objects are semantically unequal.
icu::TimeZoneRule::~TimeZoneRule
virtual ~TimeZoneRule()
Destructor.
icu::TimeZoneRule::isEquivalentTo
virtual UBool isEquivalentTo(const TimeZoneRule &other) const
Returns if this rule represents the same rule and offsets as another.
icu::TimeZoneRule::getPreviousStart
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.
icu::TimeZoneRule::operator==
virtual bool operator==(const TimeZoneRule &that) const
Return true if the given TimeZoneRule objects are semantically equal.
icu::TimeZoneRule::clone
virtual TimeZoneRule * clone() const =0
Clone this TimeZoneRule object polymorphically.
icu::TimeZoneRule::getFinalStart
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const =0
Gets the final time when this rule takes effect.
icu::TimeZoneRule::TimeZoneRule
TimeZoneRule(const TimeZoneRule &source)
Copy constructor.
icu::TimeZoneRule::getDSTSavings
int32_t getDSTSavings() const
Gets the amount of daylight saving delta time from the standard time.
icu::TimeZoneRule::operator=
TimeZoneRule & operator=(const TimeZoneRule &right)
Assignment operator.
icu::UObject
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:296
dtrule.h
C++ API: Rule for specifying date and time in an year.
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:247
unistr.h
C++ API: Unicode String.
uobject.h
C++ API: Common ICU base class UObject.
UClassID
void * UClassID
UClassID is used to identify classes without using the compiler's RTTI.
Definition: uobject.h:96
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
UErrorCode
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
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:301
UDate
double UDate
Date and Time data type.
Definition: utypes.h:203