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basictz.h
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1 /*
2 *******************************************************************************
3 * Copyright (C) 2007-2008, International Business Machines Corporation and *
4 * others. All Rights Reserved. *
5 *******************************************************************************
6 */
7 #ifndef BASICTZ_H
8 #define BASICTZ_H
9 
15 #include "unicode/utypes.h"
16 
17 #if !UCONFIG_NO_FORMATTING
18 
19 #include "unicode/timezone.h"
20 #include "unicode/tzrule.h"
21 #include "unicode/tztrans.h"
22 
24 
25 // forward declarations
26 class UVector;
27 
35 public:
40  virtual ~BasicTimeZone();
41 
50  virtual UBool getNextTransition(UDate base, UBool inclusive, TimeZoneTransition& result) /*const*/ = 0;
51 
60  virtual UBool getPreviousTransition(UDate base, UBool inclusive, TimeZoneTransition& result) /*const*/ = 0;
61 
82  virtual UBool hasEquivalentTransitions(/*const*/ BasicTimeZone& tz, UDate start, UDate end,
83  UBool ignoreDstAmount, UErrorCode& ec) /*const*/;
84 
93  virtual int32_t countTransitionRules(UErrorCode& status) /*const*/ = 0;
94 
111  virtual void getTimeZoneRules(const InitialTimeZoneRule*& initial,
112  const TimeZoneRule* trsrules[], int32_t& trscount, UErrorCode& status) /*const*/ = 0;
113 
140  virtual void getSimpleRulesNear(UDate date, InitialTimeZoneRule*& initial,
141  AnnualTimeZoneRule*& std, AnnualTimeZoneRule*& dst, UErrorCode& status) /*const*/;
142 
143 
148  enum {
149  kStandard = 0x01,
150  kDaylight = 0x03,
151  kFormer = 0x04,
152  kLatter = 0x0C
153  };
154 
159  virtual void getOffsetFromLocal(UDate date, int32_t nonExistingTimeOpt, int32_t duplicatedTimeOpt,
160  int32_t& rawOffset, int32_t& dstOffset, UErrorCode& status) /*const*/;
161 
162 protected:
163 
168  enum {
169  kStdDstMask = kDaylight,
170  kFormerLatterMask = kLatter
171  };
172 
177  BasicTimeZone();
178 
184  BasicTimeZone(const UnicodeString &id);
185 
191  BasicTimeZone(const BasicTimeZone& source);
192 
200  void getTimeZoneRulesAfter(UDate start, InitialTimeZoneRule*& initial, UVector*& transitionRules,
201  UErrorCode& status) /*const*/;
202 };
203 
205 
206 #endif /* #if !UCONFIG_NO_FORMATTING */
207 
208 #endif // BASICTZ_H
209 
210 //eof
C++ API: TimeZone object.
double UDate
Date and Time data type.
Definition: utypes.h:314
TimeZoneRule is a class representing a rule for time zone.
Definition: tzrule.h:32
C++ API: Time zone transition.
TimeZoneTransition is a class representing a time zone transition.
Definition: tztrans.h:31
#define U_I18N_API
Set to export library symbols from inside the i18n library, and to import them from outside...
Definition: utypes.h:521
#define U_NAMESPACE_BEGIN
This is used to begin a declaration of a public ICU C++ API.
Definition: uversion.h:131
InitialTimeZoneRule represents a time zone rule representing a time zone effective from the beginning...
Definition: tzrule.h:198
C++ API: Time zone rule classes.
BasicTimeZone is an abstract class extending TimeZone.
Definition: basictz.h:34
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:188
AnnualTimeZoneRule is a class used for representing a time zone rule which takes effect annually...
Definition: tzrule.h:376
#define U_NAMESPACE_END
This is used to end a declaration of a public ICU C++ API.
Definition: uversion.h:132
UErrorCode
Error code to replace exception handling, so that the code is compatible with all C++ compilers...
Definition: utypes.h:639
TimeZone represents a time zone offset, and also figures out daylight savings.
Definition: timezone.h:123
Basic definitions for ICU, for both C and C++ APIs.
int8_t UBool
The ICU boolean type.
Definition: umachine.h:228