Initial revision

From-SVN: r26263

1 files changed, 258 insertions, 0 deletions

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