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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 !UCONFIG_NO_FORMATTING
20
21 #include "unicode/uobject.h"
22 #include "unicode/unistr.h"
23 #include "unicode/dtrule.h"
24
25 U_NAMESPACE_BEGIN
26
34 class U_I18N_API TimeZoneRule : public UObject {
35 public:
40 virtual ~TimeZoneRule();
41
48 virtual TimeZoneRule* clone(void) const = 0;
49
57 virtual UBool operator==(const TimeZoneRule& that) const;
58
66 virtual UBool operator!=(const TimeZoneRule& that) const;
67
74 UnicodeString& getName(UnicodeString& name) const;
75
81 int32_t getRawOffset(void) const;
82
89 int32_t getDSTSavings(void) const;
90
99 virtual UBool isEquivalentTo(const TimeZoneRule& other) const;
100
112 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const = 0;
113
125 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const = 0;
126
141 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
142 UBool inclusive, UDate& result) const = 0;
143
158 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
159 UBool inclusive, UDate& result) const = 0;
160
161 protected:
162
172 TimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
173
179 TimeZoneRule(const TimeZoneRule& source);
180
186 TimeZoneRule& operator=(const TimeZoneRule& right);
187
188 private:
189 UnicodeString fName; // time name
190 int32_t fRawOffset; // UTC offset of the standard time in milliseconds
191 int32_t fDSTSavings; // DST saving amount in milliseconds
192 };
193
200 class U_I18N_API InitialTimeZoneRule : public TimeZoneRule {
201 public:
211 InitialTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
212
218 InitialTimeZoneRule(const InitialTimeZoneRule& source);
219
224 virtual ~InitialTimeZoneRule();
225
232 virtual InitialTimeZoneRule* clone(void) const;
233
239 InitialTimeZoneRule& operator=(const InitialTimeZoneRule& right);
240
248 virtual UBool operator==(const TimeZoneRule& that) const;
249
257 virtual UBool operator!=(const TimeZoneRule& that) const;
258
271 UBool getStartInYear(int32_t year, int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
272
281 virtual UBool isEquivalentTo(const TimeZoneRule& that) const;
282
294 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
295
307 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
308
323 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
324 UBool inclusive, UDate& result) const;
325
340 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
341 UBool inclusive, UDate& result) const;
342
343 public:
355 static UClassID U_EXPORT2 getStaticClassID(void);
356
368 virtual UClassID getDynamicClassID(void) const;
369 };
370
378 class U_I18N_API AnnualTimeZoneRule : public TimeZoneRule {
379 public:
384 static const int32_t MAX_YEAR;
385
402 AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
403 const DateTimeRule& dateTimeRule, int32_t startYear, int32_t endYear);
404
421 AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
422 DateTimeRule* dateTimeRule, int32_t startYear, int32_t endYear);
423
429 AnnualTimeZoneRule(const AnnualTimeZoneRule& source);
430
435 virtual ~AnnualTimeZoneRule();
436
443 virtual AnnualTimeZoneRule* clone(void) const;
444
450 AnnualTimeZoneRule& operator=(const AnnualTimeZoneRule& right);
451
459 virtual UBool operator==(const TimeZoneRule& that) const;
460
468 virtual UBool operator!=(const TimeZoneRule& that) const;
469
476 const DateTimeRule* getRule(void) const;
477
484 int32_t getStartYear(void) const;
485
492 int32_t getEndYear(void) const;
493
506 UBool getStartInYear(int32_t year, int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
507
516 virtual UBool isEquivalentTo(const TimeZoneRule& that) const;
517
529 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
530
542 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
543
558 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
559 UBool inclusive, UDate& result) const;
560
575 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
576 UBool inclusive, UDate& result) const;
577
578
579 private:
580 DateTimeRule* fDateTimeRule;
581 int32_t fStartYear;
582 int32_t fEndYear;
583
584 public:
596 static UClassID U_EXPORT2 getStaticClassID(void);
597
609 virtual UClassID getDynamicClassID(void) const;
610 };
611
618 class U_I18N_API TimeArrayTimeZoneRule : public TimeZoneRule {
619 public:
637 TimeArrayTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
638 const UDate* startTimes, int32_t numStartTimes, DateTimeRule::TimeRuleType timeRuleType);
639
645 TimeArrayTimeZoneRule(const TimeArrayTimeZoneRule& source);
646
651 virtual ~TimeArrayTimeZoneRule();
652
659 virtual TimeArrayTimeZoneRule* clone(void) const;
660
666 TimeArrayTimeZoneRule& operator=(const TimeArrayTimeZoneRule& right);
667
675 virtual UBool operator==(const TimeZoneRule& that) const;
676
684 virtual UBool operator!=(const TimeZoneRule& that) const;
685
694 DateTimeRule::TimeRuleType getTimeType(void) const;
695
705 UBool getStartTimeAt(int32_t index, UDate& result) const;
706
712 int32_t countStartTimes(void) const;
713
722 virtual UBool isEquivalentTo(const TimeZoneRule& that) const;
723
735 virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
736
748 virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
749
764 virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
765 UBool inclusive, UDate& result) const;
766
781 virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
782 UBool inclusive, UDate& result) const;
783
784
785 private:
786 enum { TIMEARRAY_STACK_BUFFER_SIZE = 32 };
787 UBool initStartTimes(const UDate source[], int32_t size, UErrorCode& ec);
788 UDate getUTC(UDate time, int32_t raw, int32_t dst) const;
789
790 DateTimeRule::TimeRuleType fTimeRuleType;
791 int32_t fNumStartTimes;
792 UDate* fStartTimes;
793 UDate fLocalStartTimes[TIMEARRAY_STACK_BUFFER_SIZE];
794
795 public:
807 static UClassID U_EXPORT2 getStaticClassID(void);
808
820 virtual UClassID getDynamicClassID(void) const;
821 };
822
823
824 U_NAMESPACE_END
825
826 #endif /* #if !UCONFIG_NO_FORMATTING */
827
828 #endif // TZRULE_H
829
830 //eof
icu::TimeZoneRule::operator==
virtual UBool operator==(const TimeZoneRule &that) const
Return true if the given TimeZoneRule objects are semantically equal.
icu::DateTimeRule::TimeRuleType
TimeRuleType
Time rule type constants.
Definition: dtrule.h:53
icu::UObject::getDynamicClassID
virtual UClassID getDynamicClassID() const
ICU4C "poor man&#39;s RTTI", returns a UClassID for the actual ICU class.
dtrule.h
C++ API: Rule for specifying date and time in an year.
UDate
double UDate
Date and Time data type.
Definition: utypes.h:203
unistr.h
C++ API: Unicode String.
icu::operator==
U_EXPORT UBool operator==(const StringPiece &x, const StringPiece &y)
Global operator == for StringPiece.
UClassID
void * UClassID
UClassID is used to identify classes without using the compiler&#39;s RTTI.
Definition: uobject.h:93
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::isEquivalentTo
virtual UBool isEquivalentTo(const TimeZoneRule &other) const
Returns if this rule represents the same rule and offsets as another.
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
icu::TimeZoneRule
TimeZoneRule is a class representing a rule for time zone.
Definition: tzrule.h:34
icu::InitialTimeZoneRule
InitialTimeZoneRule represents a time zone rule representing a time zone effective from the beginning...
Definition: tzrule.h:200
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::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=
TimeZoneRule & operator=(const TimeZoneRule &right)
Assignment operator.
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:384
icu::operator!=
UBool operator!=(const StringPiece &x, const StringPiece &y)
Global operator != for StringPiece.
Definition: stringpiece.h:218
icu::TimeArrayTimeZoneRule
TimeArrayTimeZoneRule represents a time zone rule whose start times are defined by an array of millis...
Definition: tzrule.h:618
icu::AnnualTimeZoneRule
AnnualTimeZoneRule is a class used for representing a time zone rule which takes effect annually...
Definition: tzrule.h:378
uobject.h
C++ API: Common ICU base class UObject.
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::DateTimeRule
DateTimeRule is a class representing a time in a year by a rule specified by month, day of month, day of week and time in the day.
Definition: dtrule.h:31
UErrorCode
UErrorCode
Error code to replace exception handling, so that the code is compatible with all C++ compilers...
Definition: utypes.h:396
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::getFirstStart
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate &result) const =0
Gets the very first time when this rule takes effect.
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
icu::TimeZoneRule::operator!=
virtual UBool operator!=(const TimeZoneRule &that) const
Return true if the given TimeZoneRule objects are semantically unequal.
icu::TimeZoneRule::clone
virtual TimeZoneRule * clone(void) const =0
Clone this TimeZoneRule object polymorphically.
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:286
icu::UObject
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
UBool
int8_t UBool
The ICU boolean type.
Definition: umachine.h:236