1 // System.Globalization.HijriCalendar.cs
3 // (C) Ulrich Kunitz 2002
7 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 namespace System.Globalization {
33 using System.Runtime.InteropServices;
37 /// This is the Hijri calendar which might be called Islamic calendar.
40 /// <para>The calendar supports only dates in the HijriEra starting with the
44 /// The epoch of the Hijri Calendar might be adjusted by the
45 /// <see cref="F:System.Globalization.HijriCalendar.AddHijriDate"/>
46 /// property. See the discussion of the
47 /// <see cref="F:CalendricalCalculations.HijriCalendar.epoch">
50 /// of the Hijri calendar.
52 /// <para>The implementation uses the
53 /// <see cref="N:CalendricalCalculations"/> namespace.
58 [MonoLimitation ("Serialization format not compatible with .NET")]
59 public class HijriCalendar : Calendar {
63 public HijriCalendar() {
64 M_AbbrEraNames = new string[] {"A.H."};
65 M_EraNames = new string[] {"Anno Hegirae"};
66 if (twoDigitYearMax == 99)
67 twoDigitYearMax = 1451;
71 /// The era number for the Anno Hegirae (A.H.) era.
73 public static readonly int HijriEra = 1;
76 /// The minimum fixed day number supported by the Hijri calendar.
78 internal static readonly int M_MinFixed =
79 CCHijriCalendar.fixed_from_dmy(1, 1, 1);
81 /// The maximum fixed day number supported by the Hijri calendar.
83 internal static readonly int M_MaxFixed =
84 CCGregorianCalendar.fixed_from_dmy(31, 12, 9999);
86 /// <value>Overridden. Gives the eras supported by the Gregorian
87 /// calendar as an array of integers.
89 public override int[] Eras {
91 return new int[] { HijriEra };
95 // FIXME: [MonoTODO ("Add call into operating system")]
96 public override int TwoDigitYearMax
99 return twoDigitYearMax;
103 M_ArgumentInRange ("value", value, 100, M_MaxYear);
105 twoDigitYearMax = value;
110 /// Protected field storing the
111 /// <see cref="F:AddHijriDate"/>.
113 internal int M_AddHijriDate = 0;
115 // TODO: I don't know currently, which sign to use with the parameter.
116 /// <value>An integer property representing the adjustment to the epoch
117 /// of the Hijri calendar. Not supported by .NET.
119 internal virtual int AddHijriDate {
121 return M_AddHijriDate;
125 if (value < -3 && value > 3)
126 throw new ArgumentOutOfRangeException(
128 "Value should be between -3 and 3.");
129 M_AddHijriDate = value;
134 /// A protected method checking an
135 /// <see cref="F:AddHijriDate"/> adjusted fixed day number.
137 /// <param name="param">A string giving the name of the parameter
138 /// to check.</param>
139 /// <param name="rdHijri">An integer giving the AddHijriDate adjusted
140 /// fixed day number.
142 /// <exception cref="T:System.ArgumentOutOfRangeException">
143 /// Exception is thrown, if the AddHijriDate adjusted fixed day
144 /// number is outside the supported range.
146 internal void M_CheckFixedHijri(string param, int rdHijri) {
147 if (rdHijri < M_MinFixed || rdHijri > M_MaxFixed-AddHijriDate) {
148 StringWriter sw = new StringWriter();
149 int day, month, year;
150 CCHijriCalendar.dmy_from_fixed(out day, out month,
151 out year, M_MaxFixed-AddHijriDate);
152 if (AddHijriDate != 0) {
153 sw.Write("This HijriCalendar " +
154 "(AddHijriDate {0})" +
155 " allows dates from 1. 1. 1 to " +
160 sw.Write("HijriCalendar allows dates from " +
161 "1.1.1 to {0}.{1}.{2}.",
164 throw new ArgumentOutOfRangeException(param,
170 /// A protected member checking a
171 /// <see cref="T:System.DateTime"/> value.
173 /// <param name="time">The
174 /// <see cref="T:System.DateTime"/>
177 /// <exception cref="T:System.ArgumentOutOfRangeException">
178 /// The exception is thrown if the
179 /// <see cref="T:System.DateTime"/> parameter is not in the supported
180 /// range of the Hijri calendar.
182 internal void M_CheckDateTime(DateTime time) {
183 int rd = CCFixed.FromDateTime(time) - AddHijriDate;
184 M_CheckFixedHijri("time", rd);
188 /// Protected member which computes the
189 /// <see cref="F:AddHijriDate"/>
190 /// adjusted fixed day number from a
191 /// <see cref="T:System.DateTime"/>.
193 /// <param name="time">The
194 /// <see cref="T:System.DateTime"/>
198 /// <see cref="F:AddHijriDate"/> adjusted fixed day number.
200 internal int M_FromDateTime(DateTime time) {
201 return CCFixed.FromDateTime(time) - AddHijriDate;
205 /// Protected member which converts the
206 /// <see cref="F:AddHijriDate"/>
207 /// adjusted fixed day number the a
208 /// <see cref="T:System.DateTime"/> value.
210 /// <param name="rd">The
211 /// <see cref="F:AddHijriDate"/> adjusted fixed day number.
213 /// <returns>The converted
214 /// <see cref="T:System.DateTime"/> value.
216 internal DateTime M_ToDateTime(int rd) {
217 return CCFixed.ToDateTime(rd+AddHijriDate);
221 /// Protected member which converts the
222 /// <see cref="F:AddHijriDate"/>
223 /// adjusted fixed day number the a
224 /// <see cref="T:System.DateTime"/> value using a number
225 /// of time parameters.
227 /// <param name="date">The
228 /// <see cref="F:AddHijriDate"/> adjusted fixed day number.
230 /// <param name="hour">An integer that specifies the hour.
232 /// <param name="minute">An integer that specifies the minute.
234 /// <param name="second">An integer that gives the second.
236 /// <param name="milliseconds">An integer that gives the
239 /// <returns>The converted
240 /// <see cref="T:System.DateTime"/> value.
242 internal DateTime M_ToDateTime(int date,
243 int hour, int minute, int second, int milliseconds)
245 return CCFixed.ToDateTime(date+AddHijriDate,
246 hour, minute, second, milliseconds);
250 /// A protected method checking the era number.
252 /// <param name="era">The era number.</param>
253 /// <exception name="T:System.ArgumentException">
254 /// The exception is thrown if the era is not equal
255 /// <see cref="F:HijriEra"/>.
257 internal void M_CheckEra(ref int era) {
258 if (era == CurrentEra)
261 throw new ArgumentException("Era value was not valid.");
265 /// A protected method checking calendar year and the era number.
267 /// <param name="year">An integer representing the calendar year.
269 /// <param name="era">The era number.</param>
270 /// <exception cref="T:System.ArgumentException">
271 /// The exception is thrown if the era is not equal
272 /// <see cref="F:HijriEra"/>.
274 /// <exception cref="T:System.ArgumentOutOfRangeException">
275 /// The exception is thrown if the calendar year is outside of
276 /// the allowed range.
278 internal override void M_CheckYE(int year, ref int era) {
280 M_ArgumentInRange("year", year, 1, 9666);
284 /// A protected method checking the calendar year, month, and
287 /// <param name="year">An integer representing the calendar year.
289 /// <param name="month">An integer giving the calendar month.
291 /// <param name="era">The era number.</param>
292 /// <exception cref="T:System.ArgumentException">
293 /// The exception is thrown if the era is not equal
294 /// <see cref="F:HijriEra"/>.
296 /// <exception cref="T:System.ArgumentOutOfRangeException">
297 /// The exception is thrown if the calendar year or month is
298 /// outside of the allowed range.
300 internal void M_CheckYME(int year, int month, ref int era) {
301 M_CheckYE(year, ref era);
302 if (month < 1 || month > 12)
303 throw new ArgumentOutOfRangeException("month",
304 "Month must be between one and twelve.");
306 int rd = CCHijriCalendar.fixed_from_dmy(1, month, year);
307 M_CheckFixedHijri("month", rd);
312 /// A protected method checking the calendar day, month, and year
313 /// and the era number.
315 /// <param name="year">An integer representing the calendar year.
317 /// <param name="month">An integer giving the calendar month.
319 /// <param name="day">An integer giving the calendar day.
321 /// <param name="era">The era number.</param>
322 /// <exception cref="T:System.ArgumentException">
323 /// The exception is thrown if the era is not equal
324 /// <see cref="F:HijriEra"/>.
326 /// <exception cref="T:System.ArgumentOutOfRangeException">
327 /// The exception is thrown if the calendar year, month, or day is
328 /// outside of the allowed range.
330 internal void M_CheckYMDE(int year, int month, int day, ref int era)
332 M_CheckYME(year, month, ref era);
333 M_ArgumentInRange("day", day, 1,
334 GetDaysInMonth(year, month, HijriEra));
336 int rd = CCHijriCalendar.fixed_from_dmy(day, month,
338 M_CheckFixedHijri("day", rd);
344 // The following routines are commented out as they do not appear on the .NET Framework 1.1
348 /// Overridden. Adds days to a given date.
350 /// <param name="time">The
351 /// <see cref="T:System.DateTime"/> to which to add
354 /// <param name="days">The number of days to add.</param>
355 /// <returns>A new <see cref="T:System.DateTime"/> value, that
356 /// results from adding <paramref name="days"/> to the specified
357 /// DateTime.</returns>
358 /// <exception cref="T:System.ArgumentOutOfRangeException">
359 /// The exception is thrown if the
360 /// <see cref="T:System.DateTime"/> return value is not in the
361 /// supported range of the Hijri calendar.
363 public override DateTime AddDays(DateTime time, int days) {
364 DateTime t = base.AddDays(time, days);
370 /// Overridden. Adds hours to a given date.
372 /// <param name="time">The
373 /// <see cref="T:System.DateTime"/> to which to add
376 /// <param name="hours">The number of hours to add.</param>
377 /// <returns>A new <see cref="T:System.DateTime"/> value, that
378 /// results from adding <paramref name="hours"/> to the specified
379 /// DateTime.</returns>
380 /// <exception cref="T:System.ArgumentOutOfRangeException">
381 /// The exception is thrown if the
382 /// <see cref="T:System.DateTime"/> return value is not in the
383 /// supported range of the Hijri calendar.
385 public override DateTime AddHours(DateTime time, int hours) {
386 DateTime t = base.AddHours(time, hours);
392 /// Overridden. Adds milliseconds to a given date.
394 /// <param name="time">The
395 /// <see cref="T:System.DateTime"/> to which to add
398 /// <param name="milliseconds">The number of milliseconds given as
399 /// double to add. Keep in mind the 100 nanosecond resolution of
400 /// <see cref="T:System.DateTime"/>.
402 /// <returns>A new <see cref="T:System.DateTime"/> value, that
403 /// results from adding <paramref name="milliseconds"/> to the specified
404 /// DateTime.</returns>
405 /// <exception cref="T:System.ArgumentOutOfRangeException">
406 /// The exception is thrown if the
407 /// <see cref="T:System.DateTime"/> return value is not in the
408 /// supported range of the Hijri calendar.
410 public override DateTime AddMilliseconds(DateTime time,
413 DateTime t = base.AddMilliseconds(time, milliseconds);
419 /// Overridden. Adds minutes to a given date.
421 /// <param name="time">The
422 /// <see cref="T:System.DateTime"/> to which to add
425 /// <param name="minutes">The number of minutes to add.</param>
426 /// <returns>A new <see cref="T:System.DateTime"/> value, that
427 /// results from adding <paramref name="minutes"/> to the specified
428 /// DateTime.</returns>
429 /// <exception cref="T:System.ArgumentOutOfRangeException">
430 /// The exception is thrown if the
431 /// <see cref="T:System.DateTime"/> return value is not in the
432 /// supported range of the Hijri calendar.
434 public override DateTime AddMinutes(DateTime time, int minutes) {
435 DateTime t = base.AddMinutes(time, minutes);
441 /// Overridden. Adds seconds to a given date.
443 /// <param name="time">The
444 /// <see cref="T:System.DateTime"/> to which to add
447 /// <param name="seconds">The number of seconds to add.</param>
448 /// <returns>A new <see cref="T:System.DateTime"/> value, that
449 /// results from adding <paramref name="seconds"/> to the specified
450 /// DateTime.</returns>
451 /// <exception cref="T:System.ArgumentOutOfRangeException">
452 /// The exception is thrown if the
453 /// <see cref="T:System.DateTime"/> return value is not in the
454 /// supported range of the Hijri calendar.
456 public override DateTime AddSeconds(DateTime time, int seconds) {
457 DateTime t = base.AddSeconds(time, seconds);
463 /// Overridden. Adds weeks to a given date.
465 /// <param name="time">The
466 /// <see cref="T:System.DateTime"/> to which to add
469 /// <param name="weeks">The number of weeks to add.</param>
470 /// <returns>A new <see cref="T:System.DateTime"/> value, that
471 /// results from adding <paramref name="weeks"/> to the specified
472 /// DateTime.</returns>
473 /// <exception cref="T:System.ArgumentOutOfRangeException">
474 /// The exception is thrown if the
475 /// <see cref="T:System.DateTime"/> return value is not in the
476 /// supported range of the Hijri calendar.
478 public override DateTime AddWeeks(DateTime time, int weeks) {
479 DateTime t = base.AddWeeks(time, weeks);
485 /// Overridden. Gives the hour of the specified time.
487 /// <param name="time">The
488 /// <see cref="T:System.DateTime"/> that specifies the
491 /// <returns>An integer that gives the hour of the specified time,
492 /// starting with 0.</returns>
493 /// <exception cref="T:System.ArgumentOutOfRangeException">
494 /// The exception is thrown if the
495 /// <see cref="T:System.DateTime"/> parameter is not in the
496 /// supported range of the Hijri calendar.
498 public override int GetHour(DateTime time) {
499 M_CheckDateTime(time);
500 return base.GetHour(time);
504 /// Overridden. Gives the milliseconds in the current second
505 /// of the specified time.
507 /// <param name="time">The
508 /// <see cref="T:System.DateTime"/> that specifies the
511 /// <returns>An integer that gives the milliseconds in the seconds
512 /// of the specified time, starting with 0.</returns>
513 /// <exception cref="T:System.ArgumentOutOfRangeException">
514 /// The exception is thrown if the
515 /// <see cref="T:System.DateTime"/> parameter is not in the
516 /// supported range of the Hijri calendar.
518 public override double GetMilliseconds(DateTime time) {
519 M_CheckDateTime(time);
520 return base.GetMilliseconds(time);
524 /// Overridden. Gives the minute of the specified time.
526 /// <param name="time">The
527 /// <see cref="T:System.DateTime"/> that specifies the
530 /// <returns>An integer that gives the minute of the specified time,
531 /// starting with 0.</returns>
532 /// <exception cref="T:System.ArgumentOutOfRangeException">
533 /// The exception is thrown if the
534 /// <see cref="T:System.DateTime"/> parameter is not in the
535 /// supported range of the Hijri calendar.
537 public override int GetMinute(DateTime time) {
538 M_CheckDateTime(time);
539 return base.GetMinute(time);
543 /// Overridden. Gives the second of the specified time.
545 /// <param name="time">The
546 /// <see cref="T:System.DateTime"/> that specifies the
549 /// <returns>An integer that gives the second of the specified time,
550 /// starting with 0.</returns>
551 /// <exception cref="T:System.ArgumentOutOfRangeException">
552 /// The exception is thrown if the
553 /// <see cref="T:System.DateTime"/> parameter is not in the
554 /// supported range of the Hijri calendar.
556 public override int GetSecond(DateTime time) {
557 M_CheckDateTime(time);
558 return base.GetMinute(time);
563 /// Overrideden. Adds months to a given date.
565 /// <param name="time">The
566 /// <see cref="T:System.DateTime"/> to which to add
569 /// <param name="months">The number of months to add.</param>
570 /// <returns>A new <see cref="T:System.DateTime"/> value, that
571 /// results from adding <paramref name="months"/> to the specified
572 /// DateTime.</returns>
573 /// <exception cref="T:System.ArgumentOutOfRangeException">
574 /// The exception is thrown if the
575 /// <see cref="T:System.DateTime"/> return value is not in the
576 /// supported range of the Hijri calendar.
578 public override DateTime AddMonths(DateTime time, int months) {
579 int rd = M_FromDateTime(time);
580 int day, month, year;
581 CCHijriCalendar.dmy_from_fixed(
582 out day, out month, out year, rd);
584 year += CCMath.div_mod(out month, month, 12);
585 rd = CCHijriCalendar.fixed_from_dmy(day, month, year);
586 M_CheckFixedHijri("time", rd);
587 DateTime t = M_ToDateTime(rd);
588 return t.Add(time.TimeOfDay);
592 /// Overrideden. Adds years to a given date.
594 /// <param name="time">The
595 /// <see cref="T:System.DateTime"/> to which to add
598 /// <param name="years">The number of years to add.</param>
599 /// <returns>A new <see cref="T:System.DateTime"/> value, that
600 /// results from adding <paramref name="years"/> to the specified
601 /// DateTime.</returns>
602 /// <exception cref="T:System.ArgumentOutOfRangeException">
603 /// The exception is thrown if the
604 /// <see cref="T:System.DateTime"/> return value is not in the
605 /// supported range of the Hijri calendar.
607 public override DateTime AddYears(DateTime time, int years) {
608 int rd = M_FromDateTime(time);
609 int day, month, year;
610 CCHijriCalendar.dmy_from_fixed(
611 out day, out month, out year, rd);
613 rd = CCHijriCalendar.fixed_from_dmy(day, month, year);
614 M_CheckFixedHijri("time", rd);
615 DateTime t = M_ToDateTime(rd);
616 return t.Add(time.TimeOfDay);
620 /// Overriden. Gets the day of the month from
621 /// <paramref name="time"/>.
623 /// <param name="time">The
624 /// <see cref="T:System.DateTime"/> that specifies a
627 /// <returns>An integer giving the day of months, starting with 1.
629 /// <exception cref="T:System.ArgumentOutOfRangeException">
630 /// The exception is thrown if the
631 /// <see cref="T:System.DateTime"/> parameter is not in the
632 /// supported range of the Hijri calendar.
634 public override int GetDayOfMonth(DateTime time) {
635 int rd = M_FromDateTime(time);
636 M_CheckFixedHijri("time", rd);
637 return CCHijriCalendar.day_from_fixed(rd);
641 /// Overriden. Gets the day of the week from the specified date.
643 /// <param name="time">The
644 /// <see cref="T:System.DateTime"/> that specifies a
647 /// <returns>An integer giving the day of months, starting with 1.
649 /// <exception cref="T:System.ArgumentOutOfRangeException">
650 /// The exception is thrown if the
651 /// <see cref="T:System.DateTime"/> parameter is not in the
652 /// supported range of the Hijri calendar.
654 public override DayOfWeek GetDayOfWeek(DateTime time) {
655 int rd = M_FromDateTime(time);
656 M_CheckFixedHijri("time", rd);
657 return (DayOfWeek)CCFixed.day_of_week(rd);
661 /// Overridden. Gives the number of the day in the year.
663 /// <param name="time">The
664 /// <see cref="T:System.DateTime"/> that specifies a
667 /// <returns>An integer representing the day of the year,
668 /// starting with 1.</returns>
669 /// <exception cref="T:System.ArgumentOutOfRangeException">
670 /// The exception is thrown if the
671 /// <see cref="T:System.DateTime"/> parameter is not in the
672 /// supported range of the Hijri calendar.
674 public override int GetDayOfYear(DateTime time) {
675 int rd = M_FromDateTime(time);
676 M_CheckFixedHijri("time", rd);
677 int year = CCHijriCalendar.year_from_fixed(rd);
678 int rd1_1 = CCHijriCalendar.fixed_from_dmy(1, 1, year);
679 return rd - rd1_1 + 1;
683 /// Overridden. Gives the number of days in the specified month
684 /// of the given year and era.
686 /// <param name="year">An integer that gives the year.
688 /// <param name="month">An integer that gives the month, starting
690 /// <param name="era">An intger that gives the era of the specified
692 /// <returns>An integer that gives the number of days of the
693 /// specified month.</returns>
694 /// <exception cref="T:System.ArgumentOutOfRangeException">
695 /// The exception is thrown, if <paramref name="month"/>,
696 /// <paramref name="year"/> ,or <paramref name="era"/> is outside
697 /// the allowed range.
699 public override int GetDaysInMonth(int year, int month, int era) {
700 M_CheckYME(year, month, ref era);
701 int rd1 = CCHijriCalendar.fixed_from_dmy(1, month, year);
702 int rd2 = CCHijriCalendar.fixed_from_dmy(1, month+1, year);
707 /// Overridden. Gives the number of days of the specified
708 /// year of the given era.
710 /// <param name="year">An integer that specifies the year.
712 /// <param name="era">An ineger that specifies the era.
714 /// <returns>An integer that gives the number of days of the
715 /// specified year.</returns>
716 /// <exception cref="T:System.ArgumentOutOfRangeExceiption">
717 /// The exception is thrown, if
718 /// <paramref name="year"/> is outside the allowed range.
720 public override int GetDaysInYear(int year, int era) {
721 M_CheckYE(year, ref era);
722 int rd1 = CCHijriCalendar.fixed_from_dmy(1, 1, year);
723 int rd2 = CCHijriCalendar.fixed_from_dmy(1, 1, year+1);
729 /// Overridden. Gives the era of the specified date.
731 /// <param name="time">The
732 /// <see cref="T:System.DateTime"/> that specifies a
735 /// <returns>An integer representing the era of the calendar.
737 /// <exception cref="T:System.ArgumentOutOfRangeException">
738 /// The exception is thrown if the
739 /// <see cref="T:System.DateTime"/> parameter is not in the
740 /// supported range of the Hijri calendar.
742 public override int GetEra(DateTime time) {
743 M_CheckDateTime(time);
748 public override int GetLeapMonth (int year, int era)
754 /// Overridden. Gives the number of the month of the specified
757 /// <param name="time">The
758 /// <see cref="T:System.DateTime"/> that specifies a
761 /// <returns>An integer representing the month,
762 /// starting with 1.</returns>
763 /// <exception cref="T:System.ArgumentOutOfRangeException">
764 /// The exception is thrown if the
765 /// <see cref="T:System.DateTime"/> parameter is not in the
766 /// supported range of the Hijri calendar.
768 public override int GetMonth(DateTime time) {
769 int rd = M_FromDateTime(time);
770 M_CheckFixedHijri("time", rd);
771 return CCHijriCalendar.month_from_fixed(rd);
775 /// Overridden. Gives the number of months in the specified year
778 /// <param name="year">An integer that specifies the year.
780 /// <param name="era">An integer that specifies the era.
782 /// <returns>An integer that gives the number of the months in the
783 /// specified year.</returns>
784 /// <exception cref="T:System.ArgumentOutOfRangeException">
785 /// The exception is thrown, if the year or the era are not valid.
787 public override int GetMonthsInYear(int year, int era) {
788 M_CheckYE(year, ref era);
793 /// Overridden. Gives the number of the year of the specified
796 /// <param name="time">The
797 /// <see cref="T:System.DateTime"/> that specifies a
800 /// <returns>An integer representing the year,
801 /// starting with 1.</returns>
802 /// <exception cref="T:System.ArgumentOutOfRangeException">
803 /// The exception is thrown if the
804 /// <see cref="T:System.DateTime"/> parameter is not in the
805 /// supported range of the Hijri calendar.
807 public override int GetYear(DateTime time) {
808 int rd = M_FromDateTime(time);
809 M_CheckFixedHijri("time", rd);
810 return CCHijriCalendar.year_from_fixed(rd);
814 /// Overridden. Tells whether the given day
817 /// <param name="year">An integer that specifies the year in the
820 /// <param name="month">An integer that specifies the month.
822 /// <param name="day">An integer that specifies the day.
824 /// <param name="era">An integer that specifies the era.
826 /// <returns>A boolean that tells whether the given day is a leap
829 /// <exception cref="T:System.ArgumentOutOfRangeException">
830 /// The exception is thrown, if the year, month, day, or era is not
833 public override bool IsLeapDay(int year, int month, int day, int era)
835 M_CheckYMDE(year, month, day, ref era);
836 return IsLeapYear(year) && month == 12 && day == 30;
840 /// Overridden. Tells whether the given month
843 /// <param name="year">An integer that specifies the year in the
846 /// <param name="month">An integer that specifies the month.
848 /// <param name="era">An integer that specifies the era.
850 /// <returns>A boolean that tells whether the given month is a leap
853 /// <exception cref="T:System.ArgumentOutOfRangeException">
854 /// The exception is thrown, if the year, month, or era is not
857 public override bool IsLeapMonth(int year, int month, int era) {
858 M_CheckYME(year, month, ref era);
863 /// Overridden. Tells whether the given year
866 /// <param name="year">An integer that specifies the year in the
869 /// <param name="era">An integer that specifies the era.
871 /// <returns>A boolean that tells whether the given year is a leap
874 /// <exception cref="T:System.ArgumentOutOfRangeException">
875 /// The exception is thrown, if the year or era is not
878 public override bool IsLeapYear(int year, int era) {
879 M_CheckYE(year, ref era);
880 return CCHijriCalendar.is_leap_year(year);
884 /// Overridden. Creates the
885 /// <see cref="T:System.DateTime"/> from the parameters.
887 /// <param name="year">An integer that gives the year in the
888 /// <paramref name="era"/>.
890 /// <param name="month">An integer that specifies the month.
892 /// <param name="day">An integer that specifies the day.
894 /// <param name="hour">An integer that specifies the hour.
896 /// <param name="minute">An integer that specifies the minute.
898 /// <param name="second">An integer that gives the second.
900 /// <param name="milliseconds">An integer that gives the
903 /// <param name="era">An integer that specifies the era.
906 /// <see cref="T:system.DateTime"/> representig the date and time.
908 /// <exception cref="T:System.ArgumentOutOfRangeException">
909 /// The exception is thrown, if at least one of the parameters
912 public override DateTime ToDateTime(int year, int month, int day,
913 int hour, int minute, int second, int millisecond,
916 M_CheckYMDE(year, month, day, ref era);
917 M_CheckHMSM(hour, minute, second, millisecond);
918 int rd = CCHijriCalendar.fixed_from_dmy(day, month, year);
919 return M_ToDateTime(rd,
920 hour, minute, second, millisecond);
923 public override int ToFourDigitYear(int year)
925 return base.ToFourDigitYear (year);
930 public override CalendarAlgorithmType AlgorithmType {
932 return CalendarAlgorithmType.LunarCalendar;
937 static DateTime Min = new DateTime (622, 7, 18, 0, 0, 0);
938 static DateTime Max = new DateTime (9999, 12, 31, 11, 59, 59);
941 public override DateTime MinSupportedDateTime {
948 public override DateTime MaxSupportedDateTime {
955 public int HijriAdjustment {
956 get { throw new NotImplementedException (); }
957 set { throw new NotImplementedException (); }
959 } // class HijriCalendar
961 } // namespace System.Globalization