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+// Copyright (C) 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 !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(void) 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(void) 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(void) 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(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