// © 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 DTRULE_H
#define DTRULE_H
#include "unicode/utypes.h"
/**
* \file
* \brief C++ API: Rule for specifying date and time in an year
*/
#if !UCONFIG_NO_FORMATTING
#include "unicode/uobject.h"
U_NAMESPACE_BEGIN
/**
* <code>DateTimeRule</code> is a class representing a time in a year by
* a rule specified by month, day of month, day of week and
* time in the day.
*
* @stable ICU 3.8
*/
class U_I18N_API DateTimeRule : public UObject {
public:
/**
* Date rule type constants.
* @stable ICU 3.8
*/
enum DateRuleType {
DOM = 0, /**< The exact day of month,
for example, March 11. */
DOW, /**< The Nth occurence of the day of week,
for example, 2nd Sunday in March. */
DOW_GEQ_DOM, /**< The first occurence of the day of week on or after the day of monnth,
for example, first Sunday on or after March 8. */
DOW_LEQ_DOM /**< The last occurence of the day of week on or before the day of month,
for example, first Sunday on or before March 14. */
};
/**
* Time rule type constants.
* @stable ICU 3.8
*/
enum TimeRuleType {
WALL_TIME = 0, /**< The local wall clock time */
STANDARD_TIME, /**< The local standard time */
UTC_TIME /**< The UTC time */
};
/**
* Constructs a <code>DateTimeRule</code> by the day of month and
* the time rule. The date rule type for an instance created by
* this constructor is <code>DOM</code>.
*
* @param month The rule month, for example, <code>Calendar::JANUARY</code>
* @param dayOfMonth The day of month, 1-based.
* @param millisInDay The milliseconds in the rule date.
* @param timeType The time type, <code>WALL_TIME</code> or <code>STANDARD_TIME</code>
* or <code>UTC_TIME</code>.
* @stable ICU 3.8
*/
DateTimeRule(int32_t month, int32_t dayOfMonth,
int32_t millisInDay, TimeRuleType timeType);
/**
* Constructs a <code>DateTimeRule</code> by the day of week and its oridinal
* number and the time rule. The date rule type for an instance created
* by this constructor is <code>DOW</code>.
*
* @param month The rule month, for example, <code>Calendar::JANUARY</code>.
* @param weekInMonth The ordinal number of the day of week. Negative number
* may be used for specifying a rule date counted from the
* end of the rule month.
* @param dayOfWeek The day of week, for example, <code>Calendar::SUNDAY</code>.
* @param millisInDay The milliseconds in the rule date.
* @param timeType The time type, <code>WALL_TIME</code> or <code>STANDARD_TIME</code>
* or <code>UTC_TIME</code>.
* @stable ICU 3.8
*/
DateTimeRule(int32_t month, int32_t weekInMonth, int32_t dayOfWeek,
int32_t millisInDay, TimeRuleType timeType);
/**
* Constructs a <code>DateTimeRule</code> by the first/last day of week
* on or after/before the day of month and the time rule. The date rule
* type for an instance created by this constructor is either
* <code>DOM_GEQ_DOM</code> or <code>DOM_LEQ_DOM</code>.
*
* @param month The rule month, for example, <code>Calendar::JANUARY</code>
* @param dayOfMonth The day of month, 1-based.
* @param dayOfWeek The day of week, for example, <code>Calendar::SUNDAY</code>.
* @param after true if the rule date is on or after the day of month.
* @param millisInDay The milliseconds in the rule date.
* @param timeType The time type, <code>WALL_TIME</code> or <code>STANDARD_TIME</code>
* or <code>UTC_TIME</code>.
* @stable ICU 3.8
*/
DateTimeRule(int32_t month, int32_t dayOfMonth, int32_t dayOfWeek, UBool after,
int32_t millisInDay, TimeRuleType timeType);
/**
* Copy constructor.
* @param source The DateTimeRule object to be copied.
* @stable ICU 3.8
*/
DateTimeRule(const DateTimeRule& source);
/**
* Destructor.
* @stable ICU 3.8
*/
~DateTimeRule();
/**
* Clone this DateTimeRule object polymorphically. The caller owns the result and
* should delete it when done.
* @return A copy of the object.
* @stable ICU 3.8
*/
DateTimeRule* clone(void) const;
/**
* Assignment operator.
* @param right The object to be copied.
* @stable ICU 3.8
*/
DateTimeRule& operator=(const DateTimeRule& right);
/**
* Return true if the given DateTimeRule objects are semantically equal. Objects
* of different subclasses are considered unequal.
* @param that The object to be compared with.
* @return true if the given DateTimeRule objects are semantically equal.
* @stable ICU 3.8
*/
UBool operator==(const DateTimeRule& that) const;
/**
* Return true if the given DateTimeRule objects are semantically unequal. Objects
* of different subclasses are considered unequal.
* @param that The object to be compared with.
* @return true if the given DateTimeRule objects are semantically unequal.
* @stable ICU 3.8
*/
UBool operator!=(const DateTimeRule& that) const;
/**
* Gets the date rule type, such as <code>DOM</code>
* @return The date rule type.
* @stable ICU 3.8
*/
DateRuleType getDateRuleType(void) const;
/**
* Gets the time rule type
* @return The time rule type, either <code>WALL_TIME</code> or <code>STANDARD_TIME</code>
* or <code>UTC_TIME</code>.
* @stable ICU 3.8
*/
TimeRuleType getTimeRuleType(void) const;
/**
* Gets the rule month.
* @return The rule month.
* @stable ICU 3.8
*/
int32_t getRuleMonth(void) const;
/**
* Gets the rule day of month. When the date rule type
* is <code>DOW</code>, the value is always 0.
* @return The rule day of month
* @stable ICU 3.8
*/
int32_t getRuleDayOfMonth(void) const;
/**
* Gets the rule day of week. When the date rule type
* is <code>DOM</code>, the value is always 0.
* @return The rule day of week.
* @stable ICU 3.8
*/
int32_t getRuleDayOfWeek(void) const;
/**
* Gets the ordinal number of the occurence of the day of week
* in the month. When the date rule type is not <code>DOW</code>,
* the value is always 0.
* @return The rule day of week ordinal number in the month.
* @stable ICU 3.8
*/
int32_t getRuleWeekInMonth(void) const;
/**
* Gets the rule time in the rule day.
* @return The time in the rule day in milliseconds.
* @stable ICU 3.8
*/
int32_t getRuleMillisInDay(void) const;
private:
int32_t fMonth;
int32_t fDayOfMonth;
int32_t fDayOfWeek;
int32_t fWeekInMonth;
int32_t fMillisInDay;
DateRuleType fDateRuleType;
TimeRuleType fTimeRuleType;
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 // DTRULE_H
//eof