basictz.h

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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2007-2013, International Business Machines Corporation and
* others. All Rights Reserved.
*******************************************************************************
*/
#ifndef BASICTZ_H
#define BASICTZ_H
 
#include "unicode/utypes.h"
 
#if !UCONFIG_NO_FORMATTING
 
#include "unicode/timezone.h"
#include "unicode/tzrule.h"
#include "unicode/tztrans.h"
 
U_NAMESPACE_BEGIN
 
// forward declarations
class UVector;
 
class U_I18N_API BasicTimeZone: public TimeZone {
public:
    virtual ~BasicTimeZone();
 
    virtual UBool getNextTransition(UDate base, UBool inclusive, TimeZoneTransition& result) const = 0;
 
    virtual UBool getPreviousTransition(UDate base, UBool inclusive, TimeZoneTransition& result) const = 0;
 
    virtual UBool hasEquivalentTransitions(const BasicTimeZone& tz, UDate start, UDate end,
        UBool ignoreDstAmount, UErrorCode& ec) const;
 
    virtual int32_t countTransitionRules(UErrorCode& status) const = 0;
 
    virtual void getTimeZoneRules(const InitialTimeZoneRule*& initial,
        const TimeZoneRule* trsrules[], int32_t& trscount, UErrorCode& status) const = 0;
 
    virtual void getSimpleRulesNear(UDate date, InitialTimeZoneRule*& initial,
        AnnualTimeZoneRule*& std, AnnualTimeZoneRule*& dst, UErrorCode& status) const;
 
 
#ifndef U_HIDE_INTERNAL_API
 
    enum {
        kStandard = 0x01,
        kDaylight = 0x03,
        kFormer = 0x04,
        kLatter = 0x0C
    };
#endif  /* U_HIDE_INTERNAL_API */
 
    virtual void getOffsetFromLocal(UDate date, int32_t nonExistingTimeOpt, int32_t duplicatedTimeOpt,
        int32_t& rawOffset, int32_t& dstOffset, UErrorCode& status) const;
 
protected:
 
#ifndef U_HIDE_INTERNAL_API
 
    enum {
        kStdDstMask = kDaylight,
        kFormerLatterMask = kLatter
    };
#endif  /* U_HIDE_INTERNAL_API */
 
    BasicTimeZone();
 
    BasicTimeZone(const UnicodeString &id);
 
    BasicTimeZone(const BasicTimeZone& source);
 
    void getTimeZoneRulesAfter(UDate start, InitialTimeZoneRule*& initial, UVector*& transitionRules,
        UErrorCode& status) const;
};
 
U_NAMESPACE_END
 
#endif /* #if !UCONFIG_NO_FORMATTING */
 
#endif // BASICTZ_H
 
//eof