275 lines
6.7 KiB
Java
275 lines
6.7 KiB
Java
/* Copyright (C) 1998, 1999, 2000 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.util;
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/**
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* @author Per Bothner <bothner@cygnus.com>
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* @date October 24, 1998.
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3,
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* and "The Java Language Specification", ISBN 0-201-63451-1.
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* Status: Unimplemented: getAvailableLocales.
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* No Locale knowledge.
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*/
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public abstract class Calendar implements java.io.Serializable, Cloneable
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{
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public final static int JANUARY = 0;
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public final static int FEBRUARY = 1;
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public final static int MARCH = 2;
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public final static int APRIL = 3;
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public final static int MAY = 4;
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public final static int JUNE = 5;
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public final static int JULY = 6;
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public final static int AUGUST = 7;
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public final static int SEPTEMBER = 8;
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public final static int OCTOBER = 9;
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public final static int NOVEMBER = 10;
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public final static int DECEMBER = 11;
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public final static int UNDECIMBER = 12;
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public final static int SUNDAY = 1;
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public final static int MONDAY = 2;
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public final static int TUESDAY = 3;
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public final static int WEDNESDAY = 4;
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public final static int THURSDAY = 5;
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public final static int FRIDAY = 6;
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public final static int SATURDAY = 7;
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public final static int AM = 0;
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public final static int PM = 1;
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public final static int FIELD_COUNT = 17;
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// These constants are not docuemnted, but were determined using
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// a simple test program.
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public final static int ERA = 0;
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public final static int YEAR = 1;
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public final static int MONTH = 2;
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public final static int WEEK_OF_YEAR = 3;
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public final static int WEEK_OF_MONTH = 4;
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public final static int DATE = 5;
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public final static int DAY_OF_MONTH = 5;
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public final static int DAY_OF_YEAR = 6;
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public final static int DAY_OF_WEEK = 7;
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public final static int DAY_OF_WEEK_IN_MONTH = 8;
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public final static int AM_PM = 9;
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public final static int HOUR = 10;
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public final static int HOUR_OF_DAY = 11;
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public final static int MINUTE = 12;
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public final static int SECOND = 13;
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public final static int MILLISECOND = 14;
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public final static int ZONE_OFFSET = 15;
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public final static int DST_OFFSET = 16;
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// The fields are as specified in Sun's "Serialized Form"
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// in the JDK 1.2 beta 4 API specification.
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protected boolean areFieldsSet;
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protected int[] fields;
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private int firstDayOfWeek;
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protected boolean[] isSet;
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protected boolean isTimeSet;
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private boolean lenient;
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private int minimalDaysInFirstWeek;
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private int nextStamp;
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//private int serialVersionOnStream;
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protected long time;
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private TimeZone zone;
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protected Calendar ()
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{
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this (null, null);
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}
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protected Calendar (TimeZone zone, Locale loc)
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{
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fields = new int[FIELD_COUNT];
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isSet = new boolean[FIELD_COUNT];
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firstDayOfWeek = SUNDAY; // Locale-dependent. FIXME.
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this.zone = zone != null ? zone : TimeZone.getDefault();
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}
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public Object clone ()
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{
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try
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{
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return super.clone();
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}
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catch (CloneNotSupportedException ex)
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{
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throw new RuntimeException("internal error - "+ex);
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}
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}
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public String toString ()
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{
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// We have much latitude in how we implement this.
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return ("areFieldsSet " + areFieldsSet
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+ "; fields " + fields
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+ "; firstDayOfWeek " + firstDayOfWeek
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+ "; isSet " + isSet
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+ "; isTimeSet " + isTimeSet
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+ "; lenient " + lenient
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+ "; minimalDaysInFirstWeek " + minimalDaysInFirstWeek
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+ "; nextStamp " + nextStamp
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+ "; time " + time
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+ "; zone " + zone);
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}
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public static Calendar getInstance ()
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{
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return new GregorianCalendar ();
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}
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public static Calendar getInstance (TimeZone zone)
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{
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return new GregorianCalendar (zone);
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}
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public static Calendar getInstance (Locale locale)
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{
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return new GregorianCalendar (locale);
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}
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public static Calendar getInstance (TimeZone zone, Locale locale)
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{
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return new GregorianCalendar (zone, locale);
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}
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public boolean isLenient() { return lenient; }
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public void setLenient (boolean lenient) { this.lenient = lenient; }
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public int getFirstDayOfWeek ()
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{
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return firstDayOfWeek;
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}
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public void setFirstDayOfWeek (int value)
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{
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firstDayOfWeek = value;
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}
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public int getMinimalDaysInFirstWeek ()
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{
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return minimalDaysInFirstWeek;
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}
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public void setMinimalDaysInFirstWeek (int value)
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{
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minimalDaysInFirstWeek = value;
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}
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public TimeZone getTimeZone ()
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{
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return zone;
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}
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public void setTimeZone (TimeZone tz)
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{
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zone = tz;
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}
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abstract public void add(int fld, int amount);
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abstract public void roll (int fld, boolean up);
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public final void set (int year, int month, int date)
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{
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set(YEAR, year);
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set(MONTH, month);
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set(DATE, date);
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}
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public final void set (int year, int month, int date, int hour, int minute)
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{
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set(year, month, date);
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set(HOUR_OF_DAY, hour);
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set(MINUTE, minute);
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}
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public final void set (int year, int month, int date,
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int hour, int minute, int second)
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{
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set(year, month, date, hour, minute);
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set(SECOND, second);
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}
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public final void set (int fld, int value)
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{
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if (! areFieldsSet) computeFields();
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fields[fld] = value;
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isTimeSet = false;
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}
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public final void clear (int fld)
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{
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fields[fld] = 0;
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isSet[fld] = false;
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areFieldsSet = false;
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}
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public final void clear ()
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{
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for (int fld = FIELD_COUNT; --fld >= 0; )
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{
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fields[fld] = 0;
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isSet[fld] = false;
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}
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areFieldsSet = false;
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}
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protected void complete()
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{
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if (!isTimeSet) computeTime();
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if (!areFieldsSet) computeFields();
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}
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protected abstract void computeFields();
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protected abstract void computeTime();
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protected final int internalGet (int fld) { return fields[fld]; }
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public final int get(int fld)
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{
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complete();
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return fields[fld];
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}
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public abstract boolean after (Object cal);
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public abstract boolean before (Object cal);
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public abstract boolean equals (Object obj);
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protected long getTimeInMillis()
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{
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if (!isTimeSet) computeTime();
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return time;
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}
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public final Date getTime() { return new Date(getTimeInMillis()); }
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public final void setTime (Date date)
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{
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setTimeInMillis(date.getTime());
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}
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protected void setTimeInMillis (long millis)
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{
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time = millis;
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isTimeSet = true;
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clear();
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}
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abstract public int getMaximum(int fld);
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abstract public int getMinimum(int fld);
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abstract public int getGreatestMinimum(int fld);
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abstract public int getLeastMaximum(int fld);
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public final boolean isSet(int fld) { return isSet[fld]; }
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}
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