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830 lines
35 KiB
830 lines
35 KiB
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 2007-2008, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*/
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#ifndef TZRULE_H
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#define TZRULE_H
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/**
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* \file
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* \brief C++ API: Time zone rule classes
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/uobject.h"
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#include "unicode/unistr.h"
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#include "unicode/dtrule.h"
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U_NAMESPACE_BEGIN
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/**
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* <code>TimeZoneRule</code> is a class representing a rule for time zone.
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* <code>TimeZoneRule</code> has a set of time zone attributes, such as zone name,
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* raw offset (UTC offset for standard time) and daylight saving time offset.
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*
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* @stable ICU 3.8
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*/
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class U_I18N_API TimeZoneRule : public UObject {
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public:
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/**
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* Destructor.
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* @stable ICU 3.8
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*/
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virtual ~TimeZoneRule();
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/**
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* Clone this TimeZoneRule object polymorphically. The caller owns the result and
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* should delete it when done.
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* @return A copy of the object.
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* @stable ICU 3.8
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*/
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virtual TimeZoneRule* clone(void) const = 0;
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/**
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* Return true if the given <code>TimeZoneRule</code> objects are semantically equal. Objects
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* of different subclasses are considered unequal.
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* @param that The object to be compared with.
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* @return true if the given <code>TimeZoneRule</code> objects are semantically equal.
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* @stable ICU 3.8
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*/
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virtual UBool operator==(const TimeZoneRule& that) const;
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/**
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* Return true if the given <code>TimeZoneRule</code> objects are semantically unequal. Objects
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* of different subclasses are considered unequal.
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* @param that The object to be compared with.
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* @return true if the given <code>TimeZoneRule</code> objects are semantically unequal.
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* @stable ICU 3.8
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*/
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virtual UBool operator!=(const TimeZoneRule& that) const;
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/**
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* Fills in "name" with the name of this time zone.
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* @param name Receives the name of this time zone.
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* @return A reference to "name"
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* @stable ICU 3.8
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*/
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UnicodeString& getName(UnicodeString& name) const;
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/**
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* Gets the standard time offset.
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* @return The standard time offset from UTC in milliseconds.
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* @stable ICU 3.8
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*/
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int32_t getRawOffset(void) const;
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/**
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* Gets the amount of daylight saving delta time from the standard time.
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* @return The amount of daylight saving offset used by this rule
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* in milliseconds.
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* @stable ICU 3.8
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*/
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int32_t getDSTSavings(void) const;
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/**
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* Returns if this rule represents the same rule and offsets as another.
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* When two <code>TimeZoneRule</code> objects differ only its names, this method
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* returns true.
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* @param other The <code>TimeZoneRule</code> object to be compared with.
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* @return true if the other <code>TimeZoneRule</code> is the same as this one.
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* @stable ICU 3.8
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*/
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virtual UBool isEquivalentTo(const TimeZoneRule& other) const;
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/**
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* Gets the very first time when this rule takes effect.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param result Receives the very first time when this rule takes effect.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const = 0;
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/**
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* Gets the final time when this rule takes effect.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param result Receives the final time when this rule takes effect.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const = 0;
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/**
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* Gets the first time when this rule takes effect after the specified time.
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* @param base The first start time after this base time will be returned.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param inclusive Whether the base time is inclusive or not.
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* @param result Receives The first time when this rule takes effect after
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* the specified base time.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
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UBool inclusive, UDate& result) const = 0;
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/**
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* Gets the most recent time when this rule takes effect before the specified time.
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* @param base The most recent time before this base time will be returned.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param inclusive Whether the base time is inclusive or not.
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* @param result Receives The most recent time when this rule takes effect before
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* the specified base time.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
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UBool inclusive, UDate& result) const = 0;
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protected:
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/**
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* Constructs a <code>TimeZoneRule</code> with the name, the GMT offset of its
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* standard time and the amount of daylight saving offset adjustment.
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* @param name The time zone name.
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* @param rawOffset The UTC offset of its standard time in milliseconds.
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* @param dstSavings The amount of daylight saving offset adjustment in milliseconds.
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* If this ia a rule for standard time, the value of this argument is 0.
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* @stable ICU 3.8
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*/
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TimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
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/**
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* Copy constructor.
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* @param source The TimeZoneRule object to be copied.
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* @stable ICU 3.8
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*/
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TimeZoneRule(const TimeZoneRule& source);
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/**
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* Assignment operator.
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* @param right The object to be copied.
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* @stable ICU 3.8
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*/
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TimeZoneRule& operator=(const TimeZoneRule& right);
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private:
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UnicodeString fName; // time name
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int32_t fRawOffset; // UTC offset of the standard time in milliseconds
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int32_t fDSTSavings; // DST saving amount in milliseconds
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};
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/**
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* <code>InitialTimeZoneRule</code> represents a time zone rule
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* representing a time zone effective from the beginning and
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* has no actual start times.
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* @stable ICU 3.8
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*/
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class U_I18N_API InitialTimeZoneRule : public TimeZoneRule {
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public:
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/**
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* Constructs an <code>InitialTimeZoneRule</code> with the name, the GMT offset of its
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* standard time and the amount of daylight saving offset adjustment.
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* @param name The time zone name.
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* @param rawOffset The UTC offset of its standard time in milliseconds.
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* @param dstSavings The amount of daylight saving offset adjustment in milliseconds.
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* If this ia a rule for standard time, the value of this argument is 0.
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* @stable ICU 3.8
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*/
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InitialTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
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/**
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* Copy constructor.
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* @param source The InitialTimeZoneRule object to be copied.
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* @stable ICU 3.8
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*/
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InitialTimeZoneRule(const InitialTimeZoneRule& source);
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/**
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* Destructor.
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* @stable ICU 3.8
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*/
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virtual ~InitialTimeZoneRule();
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/**
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* Clone this InitialTimeZoneRule object polymorphically. The caller owns the result and
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* should delete it when done.
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* @return A copy of the object.
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* @stable ICU 3.8
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*/
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virtual InitialTimeZoneRule* clone(void) const;
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/**
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* Assignment operator.
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* @param right The object to be copied.
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* @stable ICU 3.8
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*/
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InitialTimeZoneRule& operator=(const InitialTimeZoneRule& right);
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/**
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* Return true if the given <code>TimeZoneRule</code> objects are semantically equal. Objects
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* of different subclasses are considered unequal.
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* @param that The object to be compared with.
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* @return true if the given <code>TimeZoneRule</code> objects are semantically equal.
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* @stable ICU 3.8
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*/
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virtual UBool operator==(const TimeZoneRule& that) const;
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/**
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* Return true if the given <code>TimeZoneRule</code> objects are semantically unequal. Objects
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* of different subclasses are considered unequal.
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* @param that The object to be compared with.
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* @return true if the given <code>TimeZoneRule</code> objects are semantically unequal.
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* @stable ICU 3.8
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*/
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virtual UBool operator!=(const TimeZoneRule& that) const;
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/**
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* Gets the time when this rule takes effect in the given year.
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* @param year The Gregorian year, with 0 == 1 BCE, -1 == 2 BCE, etc.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param result Receives the start time in the year.
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* @return true if this rule takes effect in the year and the result is set to
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* "result".
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* @stable ICU 3.8
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*/
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UBool getStartInYear(int32_t year, int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
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/**
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* Returns if this rule represents the same rule and offsets as another.
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* When two <code>TimeZoneRule</code> objects differ only its names, this method
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* returns true.
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* @param that The <code>TimeZoneRule</code> object to be compared with.
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* @return true if the other <code>TimeZoneRule</code> is equivalent to this one.
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* @stable ICU 3.8
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*/
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virtual UBool isEquivalentTo(const TimeZoneRule& that) const;
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/**
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* Gets the very first time when this rule takes effect.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param result Receives the very first time when this rule takes effect.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
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/**
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* Gets the final time when this rule takes effect.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param result Receives the final time when this rule takes effect.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
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/**
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* Gets the first time when this rule takes effect after the specified time.
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* @param base The first start time after this base time will be returned.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param inclusive Whether the base time is inclusive or not.
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* @param result Receives The first time when this rule takes effect after
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* the specified base time.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
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UBool inclusive, UDate& result) const;
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/**
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* Gets the most recent time when this rule takes effect before the specified time.
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* @param base The most recent time before this base time will be returned.
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* @param prevRawOffset The standard time offset from UTC before this rule
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* takes effect in milliseconds.
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* @param prevDSTSavings The amount of daylight saving offset from the
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* standard time.
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* @param inclusive Whether the base time is inclusive or not.
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* @param result Receives The most recent time when this rule takes effect before
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* the specified base time.
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* @return true if the start time is available. When false is returned, output parameter
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* "result" is unchanged.
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* @stable ICU 3.8
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*/
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virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
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UBool inclusive, UDate& result) const;
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public:
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/**
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* Return the class ID for this class. This is useful only for comparing to
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* a return value from getDynamicClassID(). For example:
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* <pre>
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* . Base* polymorphic_pointer = createPolymorphicObject();
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* . if (polymorphic_pointer->getDynamicClassID() ==
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* . erived::getStaticClassID()) ...
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* </pre>
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* @return The class ID for all objects of this class.
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* @stable ICU 3.8
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*/
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static UClassID U_EXPORT2 getStaticClassID(void);
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/**
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* Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
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* method is to implement a simple version of RTTI, since not all C++
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* compilers support genuine RTTI. Polymorphic operator==() and clone()
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* methods call this method.
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*
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* @return The class ID for this object. All objects of a
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* given class have the same class ID. Objects of
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* other classes have different class IDs.
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* @stable ICU 3.8
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*/
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virtual UClassID getDynamicClassID(void) const;
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};
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/**
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* <code>AnnualTimeZoneRule</code> is a class used for representing a time zone
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* rule which takes effect annually. The calenday system used for the rule is
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* is based on Gregorian calendar
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*
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* @stable ICU 3.8
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*/
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class U_I18N_API AnnualTimeZoneRule : public TimeZoneRule {
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public:
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/**
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* The constant representing the maximum year used for designating
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* a rule is permanent.
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*/
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static const int32_t MAX_YEAR;
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/**
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* Constructs a <code>AnnualTimeZoneRule</code> with the name, the GMT offset of its
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* standard time, the amount of daylight saving offset adjustment, the annual start
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* time rule and the start/until years. The input DateTimeRule is copied by this
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* constructor, so the caller remains responsible for deleting the object.
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* @param name The time zone name.
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* @param rawOffset The GMT offset of its standard time in milliseconds.
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* @param dstSavings The amount of daylight saving offset adjustment in
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* milliseconds. If this ia a rule for standard time,
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* the value of this argument is 0.
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* @param dateTimeRule The start date/time rule repeated annually.
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* @param startYear The first year when this rule takes effect.
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* @param endYear The last year when this rule takes effect. If this
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* rule is effective forever in future, specify MAX_YEAR.
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* @stable ICU 3.8
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*/
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AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
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const DateTimeRule& dateTimeRule, int32_t startYear, int32_t endYear);
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/**
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* Constructs a <code>AnnualTimeZoneRule</code> with the name, the GMT offset of its
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* standard time, the amount of daylight saving offset adjustment, the annual start
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* time rule and the start/until years. The input DateTimeRule object is adopted
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* by this object, therefore, the caller must not delete the object.
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* @param name The time zone name.
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* @param rawOffset The GMT offset of its standard time in milliseconds.
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* @param dstSavings The amount of daylight saving offset adjustment in
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* milliseconds. If this ia a rule for standard time,
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* the value of this argument is 0.
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* @param dateTimeRule The start date/time rule repeated annually.
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* @param startYear The first year when this rule takes effect.
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* @param endYear The last year when this rule takes effect. If this
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* rule is effective forever in future, specify MAX_YEAR.
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* @stable ICU 3.8
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*/
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AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
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DateTimeRule* dateTimeRule, int32_t startYear, int32_t endYear);
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/**
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* Copy constructor.
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* @param source The AnnualTimeZoneRule object to be copied.
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* @stable ICU 3.8
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*/
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AnnualTimeZoneRule(const AnnualTimeZoneRule& source);
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/**
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* Destructor.
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* @stable ICU 3.8
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*/
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virtual ~AnnualTimeZoneRule();
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/**
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* Clone this AnnualTimeZoneRule object polymorphically. The caller owns the result and
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* should delete it when done.
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* @return A copy of the object.
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* @stable ICU 3.8
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*/
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virtual AnnualTimeZoneRule* clone(void) const;
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/**
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* Assignment operator.
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* @param right The object to be copied.
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* @stable ICU 3.8
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*/
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AnnualTimeZoneRule& operator=(const AnnualTimeZoneRule& right);
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/**
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* Return true if the given <code>TimeZoneRule</code> objects are semantically equal. Objects
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* of different subclasses are considered unequal.
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* @param that The object to be compared with.
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* @return true if the given <code>TimeZoneRule</code> objects are semantically equal.
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* @stable ICU 3.8
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*/
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virtual UBool operator==(const TimeZoneRule& that) const;
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/**
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* Return true if the given <code>TimeZoneRule</code> objects are semantically unequal. Objects
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* of different subclasses are considered unequal.
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* @param that The object to be compared with.
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* @return true if the given <code>TimeZoneRule</code> objects are semantically unequal.
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* @stable ICU 3.8
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*/
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virtual UBool operator!=(const TimeZoneRule& that) const;
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/**
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* Gets the start date/time rule used by this rule.
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* @return The <code>AnnualDateTimeRule</code> which represents the start date/time
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* rule used by this time zone rule.
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* @stable ICU 3.8
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*/
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const DateTimeRule* getRule(void) const;
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/**
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* Gets the first year when this rule takes effect.
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* @return The start year of this rule. The year is in Gregorian calendar
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* with 0 == 1 BCE, -1 == 2 BCE, etc.
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* @stable ICU 3.8
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*/
|
|
int32_t getStartYear(void) const;
|
|
|
|
/**
|
|
* Gets the end year when this rule takes effect.
|
|
* @return The end year of this rule (inclusive). The year is in Gregorian calendar
|
|
* with 0 == 1 BCE, -1 == 2 BCE, etc.
|
|
* @stable ICU 3.8
|
|
*/
|
|
int32_t getEndYear(void) const;
|
|
|
|
/**
|
|
* Gets the time when this rule takes effect in the given year.
|
|
* @param year The Gregorian year, with 0 == 1 BCE, -1 == 2 BCE, etc.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param result Receives the start time in the year.
|
|
* @return true if this rule takes effect in the year and the result is set to
|
|
* "result".
|
|
* @stable ICU 3.8
|
|
*/
|
|
UBool getStartInYear(int32_t year, int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
|
|
|
|
/**
|
|
* Returns if this rule represents the same rule and offsets as another.
|
|
* When two <code>TimeZoneRule</code> objects differ only its names, this method
|
|
* returns true.
|
|
* @param that The <code>TimeZoneRule</code> object to be compared with.
|
|
* @return true if the other <code>TimeZoneRule</code> is equivalent to this one.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool isEquivalentTo(const TimeZoneRule& that) const;
|
|
|
|
/**
|
|
* Gets the very first time when this rule takes effect.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param result Receives the very first time when this rule takes effect.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
|
|
|
|
/**
|
|
* Gets the final time when this rule takes effect.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param result Receives the final time when this rule takes effect.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
|
|
|
|
/**
|
|
* Gets the first time when this rule takes effect after the specified time.
|
|
* @param base The first start time after this base time will be returned.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param inclusive Whether the base time is inclusive or not.
|
|
* @param result Receives The first time when this rule takes effect after
|
|
* the specified base time.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
|
|
UBool inclusive, UDate& result) const;
|
|
|
|
/**
|
|
* Gets the most recent time when this rule takes effect before the specified time.
|
|
* @param base The most recent time before this base time will be returned.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param inclusive Whether the base time is inclusive or not.
|
|
* @param result Receives The most recent time when this rule takes effect before
|
|
* the specified base time.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
|
|
UBool inclusive, UDate& result) const;
|
|
|
|
|
|
private:
|
|
DateTimeRule* fDateTimeRule;
|
|
int32_t fStartYear;
|
|
int32_t fEndYear;
|
|
|
|
public:
|
|
/**
|
|
* Return the class ID for this class. This is useful only for comparing to
|
|
* a return value from getDynamicClassID(). For example:
|
|
* <pre>
|
|
* . Base* polymorphic_pointer = createPolymorphicObject();
|
|
* . if (polymorphic_pointer->getDynamicClassID() ==
|
|
* . erived::getStaticClassID()) ...
|
|
* </pre>
|
|
* @return The class ID for all objects of this class.
|
|
* @stable ICU 3.8
|
|
*/
|
|
static UClassID U_EXPORT2 getStaticClassID(void);
|
|
|
|
/**
|
|
* Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
|
|
* method is to implement a simple version of RTTI, since not all C++
|
|
* compilers support genuine RTTI. Polymorphic operator==() and clone()
|
|
* methods call this method.
|
|
*
|
|
* @return The class ID for this object. All objects of a
|
|
* given class have the same class ID. Objects of
|
|
* other classes have different class IDs.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UClassID getDynamicClassID(void) const;
|
|
};
|
|
|
|
/**
|
|
* <code>TimeArrayTimeZoneRule</code> represents a time zone rule whose start times are
|
|
* defined by an array of milliseconds since the standard base time.
|
|
*
|
|
* @stable ICU 3.8
|
|
*/
|
|
class U_I18N_API TimeArrayTimeZoneRule : public TimeZoneRule {
|
|
public:
|
|
/**
|
|
* Constructs a <code>TimeArrayTimeZoneRule</code> with the name, the GMT offset of its
|
|
* standard time, the amount of daylight saving offset adjustment and
|
|
* the array of times when this rule takes effect.
|
|
* @param name The time zone name.
|
|
* @param rawOffset The UTC offset of its standard time in milliseconds.
|
|
* @param dstSavings The amount of daylight saving offset adjustment in
|
|
* milliseconds. If this ia a rule for standard time,
|
|
* the value of this argument is 0.
|
|
* @param startTimes The array start times in milliseconds since the base time
|
|
* (January 1, 1970, 00:00:00).
|
|
* @param numStartTimes The number of elements in the parameter "startTimes"
|
|
* @param timeRuleType The time type of the start times, which is one of
|
|
* <code>DataTimeRule::WALL_TIME</code>, <code>STANDARD_TIME</code>
|
|
* and <code>UTC_TIME</code>.
|
|
* @stable ICU 3.8
|
|
*/
|
|
TimeArrayTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
|
|
const UDate* startTimes, int32_t numStartTimes, DateTimeRule::TimeRuleType timeRuleType);
|
|
|
|
/**
|
|
* Copy constructor.
|
|
* @param source The TimeArrayTimeZoneRule object to be copied.
|
|
* @stable ICU 3.8
|
|
*/
|
|
TimeArrayTimeZoneRule(const TimeArrayTimeZoneRule& source);
|
|
|
|
/**
|
|
* Destructor.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual ~TimeArrayTimeZoneRule();
|
|
|
|
/**
|
|
* Clone this TimeArrayTimeZoneRule object polymorphically. The caller owns the result and
|
|
* should delete it when done.
|
|
* @return A copy of the object.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual TimeArrayTimeZoneRule* clone(void) const;
|
|
|
|
/**
|
|
* Assignment operator.
|
|
* @param right The object to be copied.
|
|
* @stable ICU 3.8
|
|
*/
|
|
TimeArrayTimeZoneRule& operator=(const TimeArrayTimeZoneRule& right);
|
|
|
|
/**
|
|
* Return true if the given <code>TimeZoneRule</code> objects are semantically equal. Objects
|
|
* of different subclasses are considered unequal.
|
|
* @param that The object to be compared with.
|
|
* @return true if the given <code>TimeZoneRule</code> objects are semantically equal.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool operator==(const TimeZoneRule& that) const;
|
|
|
|
/**
|
|
* Return true if the given <code>TimeZoneRule</code> objects are semantically unequal. Objects
|
|
* of different subclasses are considered unequal.
|
|
* @param that The object to be compared with.
|
|
* @return true if the given <code>TimeZoneRule</code> objects are semantically unequal.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool operator!=(const TimeZoneRule& that) const;
|
|
|
|
/**
|
|
* Gets the time type of the start times used by this rule. The return value
|
|
* is either <code>DateTimeRule::WALL_TIME</code> or <code>STANDARD_TIME</code>
|
|
* or <code>UTC_TIME</code>.
|
|
*
|
|
* @return The time type used of the start times used by this rule.
|
|
* @stable ICU 3.8
|
|
*/
|
|
DateTimeRule::TimeRuleType getTimeType(void) const;
|
|
|
|
/**
|
|
* Gets a start time at the index stored in this rule.
|
|
* @param index The index of start times
|
|
* @param result Receives the start time at the index
|
|
* @return true if the index is within the valid range and
|
|
* and the result is set. When false, the output
|
|
* parameger "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
UBool getStartTimeAt(int32_t index, UDate& result) const;
|
|
|
|
/**
|
|
* Returns the number of start times stored in this rule
|
|
* @return The number of start times.
|
|
* @stable ICU 3.8
|
|
*/
|
|
int32_t countStartTimes(void) const;
|
|
|
|
/**
|
|
* Returns if this rule represents the same rule and offsets as another.
|
|
* When two <code>TimeZoneRule</code> objects differ only its names, this method
|
|
* returns true.
|
|
* @param that The <code>TimeZoneRule</code> object to be compared with.
|
|
* @return true if the other <code>TimeZoneRule</code> is equivalent to this one.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool isEquivalentTo(const TimeZoneRule& that) const;
|
|
|
|
/**
|
|
* Gets the very first time when this rule takes effect.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param result Receives the very first time when this rule takes effect.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getFirstStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
|
|
|
|
/**
|
|
* Gets the final time when this rule takes effect.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param result Receives the final time when this rule takes effect.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getFinalStart(int32_t prevRawOffset, int32_t prevDSTSavings, UDate& result) const;
|
|
|
|
/**
|
|
* Gets the first time when this rule takes effect after the specified time.
|
|
* @param base The first start time after this base time will be returned.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param inclusive Whether the base time is inclusive or not.
|
|
* @param result Receives The first time when this rule takes effect after
|
|
* the specified base time.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getNextStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
|
|
UBool inclusive, UDate& result) const;
|
|
|
|
/**
|
|
* Gets the most recent time when this rule takes effect before the specified time.
|
|
* @param base The most recent time before this base time will be returned.
|
|
* @param prevRawOffset The standard time offset from UTC before this rule
|
|
* takes effect in milliseconds.
|
|
* @param prevDSTSavings The amount of daylight saving offset from the
|
|
* standard time.
|
|
* @param inclusive Whether the base time is inclusive or not.
|
|
* @param result Receives The most recent time when this rule takes effect before
|
|
* the specified base time.
|
|
* @return true if the start time is available. When false is returned, output parameter
|
|
* "result" is unchanged.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UBool getPreviousStart(UDate base, int32_t prevRawOffset, int32_t prevDSTSavings,
|
|
UBool inclusive, UDate& result) const;
|
|
|
|
|
|
private:
|
|
enum { TIMEARRAY_STACK_BUFFER_SIZE = 32 };
|
|
UBool initStartTimes(const UDate source[], int32_t size, UErrorCode& ec);
|
|
UDate getUTC(UDate time, int32_t raw, int32_t dst) const;
|
|
|
|
DateTimeRule::TimeRuleType fTimeRuleType;
|
|
int32_t fNumStartTimes;
|
|
UDate* fStartTimes;
|
|
UDate fLocalStartTimes[TIMEARRAY_STACK_BUFFER_SIZE];
|
|
|
|
public:
|
|
/**
|
|
* Return the class ID for this class. This is useful only for comparing to
|
|
* a return value from getDynamicClassID(). For example:
|
|
* <pre>
|
|
* . Base* polymorphic_pointer = createPolymorphicObject();
|
|
* . if (polymorphic_pointer->getDynamicClassID() ==
|
|
* . erived::getStaticClassID()) ...
|
|
* </pre>
|
|
* @return The class ID for all objects of this class.
|
|
* @stable ICU 3.8
|
|
*/
|
|
static UClassID U_EXPORT2 getStaticClassID(void);
|
|
|
|
/**
|
|
* Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
|
|
* method is to implement a simple version of RTTI, since not all C++
|
|
* compilers support genuine RTTI. Polymorphic operator==() and clone()
|
|
* methods call this method.
|
|
*
|
|
* @return The class ID for this object. All objects of a
|
|
* given class have the same class ID. Objects of
|
|
* other classes have different class IDs.
|
|
* @stable ICU 3.8
|
|
*/
|
|
virtual UClassID getDynamicClassID(void) const;
|
|
};
|
|
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
#endif // TZRULE_H
|
|
|
|
//eof
|
|
|