Index: icu46/source/i18n/unicode/rbtz.h |
=================================================================== |
--- icu46/source/i18n/unicode/rbtz.h (revision 0) |
+++ icu46/source/i18n/unicode/rbtz.h (revision 0) |
@@ -0,0 +1,361 @@ |
+/* |
+******************************************************************************* |
+* Copyright (C) 2007-2008, International Business Machines Corporation and * |
+* others. All Rights Reserved. * |
+******************************************************************************* |
+*/ |
+#ifndef RBTZ_H |
+#define RBTZ_H |
+ |
+#include "unicode/utypes.h" |
+ |
+/** |
+ * \file |
+ * \brief C++ API: Rule based customizable time zone |
+ */ |
+ |
+#if !UCONFIG_NO_FORMATTING |
+ |
+#include "unicode/basictz.h" |
+#include "unicode/unistr.h" |
+ |
+U_NAMESPACE_BEGIN |
+ |
+// forward declaration |
+class UVector; |
+struct Transition; |
+ |
+/** |
+ * a BasicTimeZone subclass implemented in terms of InitialTimeZoneRule and TimeZoneRule instances |
+ * @see BasicTimeZone |
+ * @see InitialTimeZoneRule |
+ * @see TimeZoneRule |
+ */ |
+class U_I18N_API RuleBasedTimeZone : public BasicTimeZone { |
+public: |
+ /** |
+ * Constructs a <code>RuleBasedTimeZone</code> object with the ID and the |
+ * <code>InitialTimeZoneRule</code>. The input <code>InitialTimeZoneRule</code> |
+ * is adopted by this <code>RuleBasedTimeZone</code>, thus the caller must not |
+ * delete it. |
+ * @param id The time zone ID. |
+ * @param initialRule The initial time zone rule. |
+ * @stable ICU 3.8 |
+ */ |
+ RuleBasedTimeZone(const UnicodeString& id, InitialTimeZoneRule* initialRule); |
+ |
+ /** |
+ * Copy constructor. |
+ * @param source The RuleBasedTimeZone object to be copied. |
+ * @stable ICU 3.8 |
+ */ |
+ RuleBasedTimeZone(const RuleBasedTimeZone& source); |
+ |
+ /** |
+ * Destructor. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual ~RuleBasedTimeZone(); |
+ |
+ /** |
+ * Assignment operator. |
+ * @param right The object to be copied. |
+ * @stable ICU 3.8 |
+ */ |
+ RuleBasedTimeZone& operator=(const RuleBasedTimeZone& right); |
+ |
+ /** |
+ * Return true if the given <code>TimeZone</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>TimeZone</code> objects are |
+ *semantically equal. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual UBool operator==(const TimeZone& that) const; |
+ |
+ /** |
+ * Return true if the given <code>TimeZone</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>TimeZone</code> objects are |
+ * semantically unequal. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual UBool operator!=(const TimeZone& that) const; |
+ |
+ /** |
+ * Adds the <code>TimeZoneRule</code> which represents time transitions. |
+ * The <code>TimeZoneRule</code> must have start times, that is, the result |
+ * of isTransitionRule() must be true. Otherwise, U_ILLEGAL_ARGUMENT_ERROR |
+ * is set to the error code. |
+ * The input <code>TimeZoneRule</code> is adopted by this |
+ * <code>RuleBasedTimeZone</code> on successful completion of this method, |
+ * thus, the caller must not delete it when no error is returned. |
+ * After all rules are added, the caller must call complete() method to |
+ * make this <code>RuleBasedTimeZone</code> ready to handle common time |
+ * zone functions. |
+ * @param rule The <code>TimeZoneRule</code>. |
+ * @param status Output param to filled in with a success or an error. |
+ * @stable ICU 3.8 |
+ */ |
+ void addTransitionRule(TimeZoneRule* rule, UErrorCode& status); |
+ |
+ /** |
+ * Makes the <code>TimeZoneRule</code> ready to handle actual timezone |
+ * calcuation APIs. This method collects time zone rules specified |
+ * by the caller via the constructor and addTransitionRule() and |
+ * builds internal structure for making the object ready to support |
+ * time zone APIs such as getOffset(), getNextTransition() and others. |
+ * @param status Output param to filled in with a success or an error. |
+ * @stable ICU 3.8 |
+ */ |
+ void complete(UErrorCode& status); |
+ |
+ /** |
+ * Clones TimeZone objects polymorphically. Clients are responsible for deleting |
+ * the TimeZone object cloned. |
+ * |
+ * @return A new copy of this TimeZone object. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual TimeZone* clone(void) const; |
+ |
+ /** |
+ * Returns the TimeZone's adjusted GMT offset (i.e., the number of milliseconds to add |
+ * to GMT to get local time in this time zone, taking daylight savings time into |
+ * account) as of a particular reference date. The reference date is used to determine |
+ * whether daylight savings time is in effect and needs to be figured into the offset |
+ * that is returned (in other words, what is the adjusted GMT offset in this time zone |
+ * at this particular date and time?). For the time zones produced by createTimeZone(), |
+ * the reference data is specified according to the Gregorian calendar, and the date |
+ * and time fields are local standard time. |
+ * |
+ * <p>Note: Don't call this method. Instead, call the getOffset(UDate...) overload, |
+ * which returns both the raw and the DST offset for a given time. This method |
+ * is retained only for backward compatibility. |
+ * |
+ * @param era The reference date's era |
+ * @param year The reference date's year |
+ * @param month The reference date's month (0-based; 0 is January) |
+ * @param day The reference date's day-in-month (1-based) |
+ * @param dayOfWeek The reference date's day-of-week (1-based; 1 is Sunday) |
+ * @param millis The reference date's milliseconds in day, local standard time |
+ * @param status Output param to filled in with a success or an error. |
+ * @return The offset in milliseconds to add to GMT to get local time. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual int32_t getOffset(uint8_t era, int32_t year, int32_t month, int32_t day, |
+ uint8_t dayOfWeek, int32_t millis, UErrorCode& status) const; |
+ |
+ /** |
+ * Gets the time zone offset, for current date, modified in case of |
+ * daylight savings. This is the offset to add *to* UTC to get local time. |
+ * |
+ * <p>Note: Don't call this method. Instead, call the getOffset(UDate...) overload, |
+ * which returns both the raw and the DST offset for a given time. This method |
+ * is retained only for backward compatibility. |
+ * |
+ * @param era The reference date's era |
+ * @param year The reference date's year |
+ * @param month The reference date's month (0-based; 0 is January) |
+ * @param day The reference date's day-in-month (1-based) |
+ * @param dayOfWeek The reference date's day-of-week (1-based; 1 is Sunday) |
+ * @param millis The reference date's milliseconds in day, local standard time |
+ * @param monthLength The length of the given month in days. |
+ * @param status Output param to filled in with a success or an error. |
+ * @return The offset in milliseconds to add to GMT to get local time. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual int32_t getOffset(uint8_t era, int32_t year, int32_t month, int32_t day, |
+ uint8_t dayOfWeek, int32_t millis, |
+ int32_t monthLength, UErrorCode& status) const; |
+ |
+ /** |
+ * Returns the time zone raw and GMT offset for the given moment |
+ * in time. Upon return, local-millis = GMT-millis + rawOffset + |
+ * dstOffset. All computations are performed in the proleptic |
+ * Gregorian calendar. The default implementation in the TimeZone |
+ * class delegates to the 8-argument getOffset(). |
+ * |
+ * @param date moment in time for which to return offsets, in |
+ * units of milliseconds from January 1, 1970 0:00 GMT, either GMT |
+ * time or local wall time, depending on `local'. |
+ * @param local if true, `date' is local wall time; otherwise it |
+ * is in GMT time. |
+ * @param rawOffset output parameter to receive the raw offset, that |
+ * is, the offset not including DST adjustments |
+ * @param dstOffset output parameter to receive the DST offset, |
+ * that is, the offset to be added to `rawOffset' to obtain the |
+ * total offset between local and GMT time. If DST is not in |
+ * effect, this value is zero; otherwise it is a positive value, |
+ * typically one hour. |
+ * @param ec input-output error code |
+ * @stable ICU 3.8 |
+ */ |
+ virtual void getOffset(UDate date, UBool local, int32_t& rawOffset, |
+ int32_t& dstOffset, UErrorCode& ec) const; |
+ |
+ /** |
+ * Sets the TimeZone's raw GMT offset (i.e., the number of milliseconds to add |
+ * to GMT to get local time, before taking daylight savings time into account). |
+ * |
+ * @param offsetMillis The new raw GMT offset for this time zone. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual void setRawOffset(int32_t offsetMillis); |
+ |
+ /** |
+ * Returns the TimeZone's raw GMT offset (i.e., the number of milliseconds to add |
+ * to GMT to get local time, before taking daylight savings time into account). |
+ * |
+ * @return The TimeZone's raw GMT offset. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual int32_t getRawOffset(void) const; |
+ |
+ /** |
+ * Queries if this time zone uses daylight savings time. |
+ * @return true if this time zone uses daylight savings time, |
+ * false, otherwise. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual UBool useDaylightTime(void) const; |
+ |
+ /** |
+ * Queries if the given date is in daylight savings time in |
+ * this time zone. |
+ * This method is wasteful since it creates a new GregorianCalendar and |
+ * deletes it each time it is called. This is a deprecated method |
+ * and provided only for Java compatibility. |
+ * |
+ * @param date the given UDate. |
+ * @param status Output param filled in with success/error code. |
+ * @return true if the given date is in daylight savings time, |
+ * false, otherwise. |
+ * @deprecated ICU 2.4. Use Calendar::inDaylightTime() instead. |
+ */ |
+ virtual UBool inDaylightTime(UDate date, UErrorCode& status) const; |
+ |
+ /** |
+ * Returns true if this zone has the same rule and offset as another zone. |
+ * That is, if this zone differs only in ID, if at all. |
+ * @param other the <code>TimeZone</code> object to be compared with |
+ * @return true if the given zone is the same as this one, |
+ * with the possible exception of the ID |
+ * @stable ICU 3.8 |
+ */ |
+ virtual UBool hasSameRules(const TimeZone& other) const; |
+ |
+ /** |
+ * Gets the first time zone transition after the base time. |
+ * @param base The base time. |
+ * @param inclusive Whether the base time is inclusive or not. |
+ * @param result Receives the first transition after the base time. |
+ * @return TRUE if the transition is found. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual UBool getNextTransition(UDate base, UBool inclusive, TimeZoneTransition& result) /*const*/; |
+ |
+ /** |
+ * Gets the most recent time zone transition before the base time. |
+ * @param base The base time. |
+ * @param inclusive Whether the base time is inclusive or not. |
+ * @param result Receives the most recent transition before the base time. |
+ * @return TRUE if the transition is found. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual UBool getPreviousTransition(UDate base, UBool inclusive, TimeZoneTransition& result) /*const*/; |
+ |
+ /** |
+ * Returns the number of <code>TimeZoneRule</code>s which represents time transitions, |
+ * for this time zone, that is, all <code>TimeZoneRule</code>s for this time zone except |
+ * <code>InitialTimeZoneRule</code>. The return value range is 0 or any positive value. |
+ * @param status Receives error status code. |
+ * @return The number of <code>TimeZoneRule</code>s representing time transitions. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual int32_t countTransitionRules(UErrorCode& status) /*const*/; |
+ |
+ /** |
+ * Gets the <code>InitialTimeZoneRule</code> and the set of <code>TimeZoneRule</code> |
+ * which represent time transitions for this time zone. On successful return, |
+ * the argument initial points to non-NULL <code>InitialTimeZoneRule</code> and |
+ * the array trsrules is filled with 0 or multiple <code>TimeZoneRule</code> |
+ * instances up to the size specified by trscount. The results are referencing the |
+ * rule instance held by this time zone instance. Therefore, after this time zone |
+ * is destructed, they are no longer available. |
+ * @param initial Receives the initial timezone rule |
+ * @param trsrules Receives the timezone transition rules |
+ * @param trscount On input, specify the size of the array 'transitions' receiving |
+ * the timezone transition rules. On output, actual number of |
+ * rules filled in the array will be set. |
+ * @param status Receives error status code. |
+ * @stable ICU 3.8 |
+ */ |
+ virtual void getTimeZoneRules(const InitialTimeZoneRule*& initial, |
+ const TimeZoneRule* trsrules[], int32_t& trscount, UErrorCode& status) /*const*/; |
+ |
+ /** |
+ * Get time zone offsets from local wall time. |
+ * @internal |
+ */ |
+ virtual void getOffsetFromLocal(UDate date, int32_t nonExistingTimeOpt, int32_t duplicatedTimeOpt, |
+ int32_t& rawOffset, int32_t& dstOffset, UErrorCode& status) /*const*/; |
+ |
+private: |
+ void deleteRules(void); |
+ void deleteTransitions(void); |
+ UVector* copyRules(UVector* source); |
+ TimeZoneRule* findRuleInFinal(UDate date, UBool local, |
+ int32_t NonExistingTimeOpt, int32_t DuplicatedTimeOpt) const; |
+ UBool findNext(UDate base, UBool inclusive, UDate& time, TimeZoneRule*& from, TimeZoneRule*& to) const; |
+ UBool findPrev(UDate base, UBool inclusive, UDate& time, TimeZoneRule*& from, TimeZoneRule*& to) const; |
+ int32_t getLocalDelta(int32_t rawBefore, int32_t dstBefore, int32_t rawAfter, int32_t dstAfter, |
+ int32_t NonExistingTimeOpt, int32_t DuplicatedTimeOpt) const; |
+ UDate getTransitionTime(Transition* transition, UBool local, |
+ int32_t NonExistingTimeOpt, int32_t DuplicatedTimeOpt) const; |
+ void getOffsetInternal(UDate date, UBool local, int32_t NonExistingTimeOpt, int32_t DuplicatedTimeOpt, |
+ int32_t& rawOffset, int32_t& dstOffset, UErrorCode& ec) const; |
+ |
+ InitialTimeZoneRule *fInitialRule; |
+ UVector *fHistoricRules; |
+ UVector *fFinalRules; |
+ UVector *fHistoricTransitions; |
+ UBool fUpToDate; |
+ |
+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 // RBTZ_H |
+ |
+//eof |
Property changes on: icu46/source/i18n/unicode/rbtz.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |