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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2007-2008, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*/
#ifndef TZRULE_H
#define TZRULE_H
/**
* \file
* \brief C++ API: Time zone rule classes
*/
#include "unicode/utypes.h"
#if U_SHOW_CPLUSPLUS_API
#if !UCONFIG_NO_FORMATTING
#include "unicode/uobject.h"
#include "unicode/unistr.h"
#include "unicode/dtrule.h"
U_NAMESPACE_BEGIN
/**
* <code>TimeZoneRule</code> is a class representing a rule for time zone.
* <code>TimeZoneRule</code> has a set of time zone attributes, such as zone name,
* raw offset (UTC offset for standard time) and daylight saving time offset.
*
* @stable ICU 3.8
*/
class U_I18N_API TimeZoneRule : public UObject {
public:
/**
* Destructor.
* @stable ICU 3.8
*/
virtual ~TimeZoneRule();
/**
* Clone this TimeZoneRule object polymorphically. The caller owns the result and
* should delete it when done.
* @return A copy of the object.
* @stable ICU 3.8
*/
virtual TimeZoneRule* clone() const = 0;
/**
* 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;
/**
* Fills in "name" with the name of this time zone.
* @param name Receives the name of this time zone.
* @return A reference to "name"
* @stable ICU 3.8
*/
UnicodeString& getName(UnicodeString& name) const;
/**
* Gets the standard time offset.
* @return The standard time offset from UTC in milliseconds.
* @stable ICU 3.8
*/
int32_t getRawOffset(void) const;
/**
* Gets the amount of daylight saving delta time from the standard time.
* @return The amount of daylight saving offset used by this rule
* in milliseconds.
* @stable ICU 3.8
*/
int32_t getDSTSavings(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 other The <code>TimeZoneRule</code> object to be compared with.
* @return true if the other <code>TimeZoneRule</code> is the same as this one.
* @stable ICU 3.8
*/
virtual UBool isEquivalentTo(const TimeZoneRule& other) 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 = 0;
/**
* 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 = 0;
/**
* 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 = 0;
/**
* 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 = 0;
protected:
/**
* Constructs a <code>TimeZoneRule</code> with the name, the GMT offset of its
* standard time and the amount of daylight saving offset adjustment.
* @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.
* @stable ICU 3.8
*/
TimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
/**
* Copy constructor.
* @param source The TimeZoneRule object to be copied.
* @stable ICU 3.8
*/
TimeZoneRule(const TimeZoneRule& source);
/**
* Assignment operator.
* @param right The object to be copied.
* @stable ICU 3.8
*/
TimeZoneRule& operator=(const TimeZoneRule& right);
private:
UnicodeString fName; // time name
int32_t fRawOffset; // UTC offset of the standard time in milliseconds
int32_t fDSTSavings; // DST saving amount in milliseconds
};
/**
* <code>InitialTimeZoneRule</code> represents a time zone rule
* representing a time zone effective from the beginning and
* has no actual start times.
* @stable ICU 3.8
*/
class U_I18N_API InitialTimeZoneRule : public TimeZoneRule {
public:
/**
* Constructs an <code>InitialTimeZoneRule</code> with the name, the GMT offset of its
* standard time and the amount of daylight saving offset adjustment.
* @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.
* @stable ICU 3.8
*/
InitialTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings);
/**
* Copy constructor.
* @param source The InitialTimeZoneRule object to be copied.
* @stable ICU 3.8
*/
InitialTimeZoneRule(const InitialTimeZoneRule& source);
/**
* Destructor.
* @stable ICU 3.8
*/
virtual ~InitialTimeZoneRule();
/**
* Clone this InitialTimeZoneRule object polymorphically. The caller owns the result and
* should delete it when done.
* @return A copy of the object.
* @stable ICU 3.8
*/
virtual InitialTimeZoneRule* clone() const;
/**
* Assignment operator.
* @param right The object to be copied.
* @stable ICU 3.8
*/
InitialTimeZoneRule& operator=(const InitialTimeZoneRule& 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 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;
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>AnnualTimeZoneRule</code> is a class used for representing a time zone
* rule which takes effect annually. The calenday system used for the rule is
* is based on Gregorian calendar
*
* @stable ICU 3.8
*/
class U_I18N_API AnnualTimeZoneRule : public TimeZoneRule {
public:
/**
* The constant representing the maximum year used for designating
* a rule is permanent.
*/
static const int32_t MAX_YEAR;
/**
* Constructs a <code>AnnualTimeZoneRule</code> with the name, the GMT offset of its
* standard time, the amount of daylight saving offset adjustment, the annual start
* time rule and the start/until years. The input DateTimeRule is copied by this
* constructor, so the caller remains responsible for deleting the object.
* @param name The time zone name.
* @param rawOffset The GMT 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 dateTimeRule The start date/time rule repeated annually.
* @param startYear The first year when this rule takes effect.
* @param endYear The last year when this rule takes effect. If this
* rule is effective forever in future, specify MAX_YEAR.
* @stable ICU 3.8
*/
AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
const DateTimeRule& dateTimeRule, int32_t startYear, int32_t endYear);
/**
* Constructs a <code>AnnualTimeZoneRule</code> with the name, the GMT offset of its
* standard time, the amount of daylight saving offset adjustment, the annual start
* time rule and the start/until years. The input DateTimeRule object is adopted
* by this object, therefore, the caller must not delete the object.
* @param name The time zone name.
* @param rawOffset The GMT 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 dateTimeRule The start date/time rule repeated annually.
* @param startYear The first year when this rule takes effect.
* @param endYear The last year when this rule takes effect. If this
* rule is effective forever in future, specify MAX_YEAR.
* @stable ICU 3.8
*/
AnnualTimeZoneRule(const UnicodeString& name, int32_t rawOffset, int32_t dstSavings,
DateTimeRule* dateTimeRule, int32_t startYear, int32_t endYear);
/**
* Copy constructor.
* @param source The AnnualTimeZoneRule object to be copied.
* @stable ICU 3.8
*/
AnnualTimeZoneRule(const AnnualTimeZoneRule& source);
/**
* Destructor.
* @stable ICU 3.8
*/
virtual ~AnnualTimeZoneRule();
/**
* Clone this AnnualTimeZoneRule object polymorphically. The caller owns the result and
* should delete it when done.
* @return A copy of the object.
* @stable ICU 3.8
*/
virtual AnnualTimeZoneRule* clone() const;
/**
* Assignment operator.
* @param right The object to be copied.
* @stable ICU 3.8
*/
AnnualTimeZoneRule& operator=(const AnnualTimeZoneRule& 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 start date/time rule used by this rule.
* @return The <code>AnnualDateTimeRule</code> which represents the start date/time
* rule used by this time zone rule.
* @stable ICU 3.8
*/
const DateTimeRule* getRule(void) const;
/**
* Gets the first year when this rule takes effect.
* @return The start year of this rule. The year is in Gregorian calendar
* with 0 == 1 BCE, -1 == 2 BCE, etc.
* @stable ICU 3.8
*/
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() 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 /* U_SHOW_CPLUSPLUS_API */
#endif // TZRULE_H
//eof
Mr. DellatioNx196 GaLers xh3LL Backd00r 1.0, Coded By Mr. DellatioNx196 - Bogor BlackHat