mcs/class/corlib/System.Globalization/GregorianCalendar.cs

   1 // GregorianCalendar.cs
   2 //
   3 // (C) Ulrich Kunitz 2002
   4 //
   5
   6 //
   7 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   8 //
   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:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  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.
  27 //
  28
  29 namespace System.Globalization {
  30
  31 using System;
  32
  33 /// <summary>
  34 /// This is the Gregorian calendar.
  35 /// </summary>
  36 /// <remarks>
  37 /// <para>The Gregorian calendar supports only the Common Era from
  38 /// the Gregorian year 1 to the Gregorian year 9999.
  39 /// </para>
  40 /// <para>The implementation uses the
  41 /// <see cref="N:CalendricalCalculations"/> namespace.
  42 /// </para>
  43 /// </remarks>
  44 [Serializable]
  45 [MonoTODO ("Fix serialization compatibility with MS.NET")]
  46 public class GregorianCalendar : Calendar {
  47         /// <summary>
  48         /// The era number for the Common Era (C.E.) or Anno Domini (A.D.)
  49         /// respective.
  50         /// </summary>
  51         public const int ADEra = 1;
  52
  53         /// <value>Overridden. Gives the eras supported by the Gregorian
  54         /// calendar as an array of integers.
  55         /// </value>
  56         public override int[] Eras {
  57                 get {
  58                         return new int[] { ADEra };
  59                 }
  60         }
  61
  62         int twoDigitYearMax = 2029;
  63
  64         public override int TwoDigitYearMax
  65         {
  66                 get {
  67                         return twoDigitYearMax;
  68                 }
  69                 set {
  70                         M_ArgumentInRange ("value", value, 100, M_MaxYear);
  71
  72                         twoDigitYearMax = value;
  73                 }
  74         }
  75
  76         /// <summary>
  77         /// A protected member storing the
  78         /// <see cref="T:System.Globalization.GregorianCalendarTypes"/>.
  79         /// </summary>
  80         internal GregorianCalendarTypes M_CalendarType;
  81
  82         /// <value>
  83         /// The property stores the
  84         /// <see cref="T:System.Globalization.GregorianCalendarTypes"/>.
  85         /// </value>
  86         public virtual GregorianCalendarTypes CalendarType {
  87                 get { return M_CalendarType; }
  88                 set {
  89                         // mscorlib 1:0:33000:0 doesn't check anything here
  90                         M_CalendarType = value;
  91                 }
  92         }
  93
  94         /// <summary>
  95         /// A protected method checking the era number.
  96         /// </summary>
  97         /// <param name="era">The era number.</param>
  98         /// <exception name="T:System.ArgumentException">
  99         /// The exception is thrown if the era is not equal
 100         /// <see cref="M:ADEra"/>.
 101         /// </exception>
 102         internal void M_CheckEra(ref int era) {
 103                 if (era == CurrentEra)
 104                         era = ADEra;
 105                 if (era != ADEra)
 106                         throw new ArgumentException("Era value was not valid.");
 107         }
 108
 109         /// <summary>
 110         /// A protected method checking calendar year and the era number.
 111         /// </summary>
 112         /// <param name="year">An integer representing the calendar year.
 113         /// </param>
 114         /// <param name="era">The era number.</param>
 115         /// <exception cref="T:System.ArgumentException">
 116         /// The exception is thrown if the era is not equal
 117         /// <see cref="M:ADEra"/>.
 118         /// </exception>
 119         /// <exception cref="T:System.ArgumentOutOfRangeException">
 120         /// The exception is thrown if the calendar year is outside of
 121         /// the allowed range.
 122         /// </exception>
 123         internal override void M_CheckYE(int year, ref int era) {
 124                 M_CheckEra(ref era);
 125                 M_ArgumentInRange("year", year, 1, 9999);
 126         }
 127
 128         /// <summary>
 129         /// A protected method checking the calendar year, month, and
 130         /// era number.
 131         /// </summary>
 132         /// <param name="year">An integer representing the calendar year.
 133         /// </param>
 134         /// <param name="month">An integer giving the calendar month.
 135         /// </param>
 136         /// <param name="era">The era number.</param>
 137         /// <exception cref="T:System.ArgumentException">
 138         /// The exception is thrown if the era is not equal
 139         /// <see cref="M:ADEra"/>.
 140         /// </exception>
 141         /// <exception cref="T:System.ArgumentOutOfRangeException">
 142         /// The exception is thrown if the calendar year or month is
 143         /// outside of the allowed range.
 144         /// </exception>
 145         internal void M_CheckYME(int year, int month, ref int era) {
 146                 M_CheckYE(year, ref era);
 147                 if (month < 1 || month > 12)
 148                         throw new ArgumentOutOfRangeException("month",
 149                                 "Month must be between one and twelve.");
 150         }
 151
 152         /// <summary>
 153         /// A protected method checking the calendar day, month, and year
 154         /// and the era number.
 155         /// </summary>
 156         /// <param name="year">An integer representing the calendar year.
 157         /// </param>
 158         /// <param name="month">An integer giving the calendar month.
 159         /// </param>
 160         /// <param name="day">An integer giving the calendar day.
 161         /// </param>
 162         /// <param name="era">The era number.</param>
 163         /// <exception cref="T:System.ArgumentException">
 164         /// The exception is thrown if the era is not equal
 165         /// <see cref="M:ADEra"/>.
 166         /// </exception>
 167         /// <exception cref="T:System.ArgumentOutOfRangeException">
 168         /// The exception is thrown if the calendar year, month, or day is
 169         /// outside of the allowed range.
 170         /// </exception>
 171         internal void M_CheckYMDE(int year, int month, int day, ref int era)
 172         {
 173                 M_CheckYME(year, month, ref era);
 174                 M_ArgumentInRange("day", day, 1,
 175                         GetDaysInMonth(year, month, era));
 176         }
 177
 178         /// <summary>
 179         /// Overridden. Adds months to a given date.
 180         /// </summary>
 181         /// <param name="time">The
 182         /// <see cref="T:System.DateTime"/> to which to add
 183         /// months.
 184         /// </param>
 185         /// <param name="months">The number of months to add.</param>
 186         /// <returns>A new <see cref="T:System.DateTime"/> value, that
 187         /// results from adding <paramref name="months"/> to the specified
 188         /// DateTime.</returns>
 189         public override DateTime AddMonths(DateTime time, int months) {
 190                 return CCGregorianCalendar.AddMonths(time, months);
 191         }
 192
 193         [MonoTODO]
 194         public override DateTime AddWeeks(DateTime time, int weeks)
 195         {
 196                 throw new NotImplementedException();
 197         }
 198
 199         /// <summary>
 200         /// Overridden. Adds years to a given date.
 201         /// </summary>
 202         /// <param name="time">The
 203         /// <see cref="T:System.DateTime"/> to which to add
 204         /// years.
 205         /// </param>
 206         /// <param name="years">The number of years to add.</param>
 207         /// <returns>A new <see cref="T:System.DateTime"/> value, that
 208         /// results from adding <paramref name="years"/> to the specified
 209         /// DateTime.</returns>
 210         public override DateTime AddYears(DateTime time, int years) {
 211                 return CCGregorianCalendar.AddYears(time, years);
 212         }
 213
 214         /// <summary>
 215         /// Overridden. Gets the day of the month from
 216         /// <paramref name="time"/>.
 217         /// </summary>
 218         /// <param name="time">The
 219         /// <see cref="T:System.DateTime"/> that specifies a
 220         /// date.
 221         /// </param>
 222         /// <returns>An integer giving the day of months, starting with 1.
 223         /// </returns>
 224         public override int GetDayOfMonth(DateTime time) {
 225                 return CCGregorianCalendar.GetDayOfMonth(time);
 226         }
 227
 228         /// <summary>
 229         /// Overridden. Gets the day of the week from the specified date.
 230         /// </summary>
 231         /// <param name="time">The
 232         /// <see cref="T:System.DateTime"/> that specifies a
 233         /// date.
 234         /// </param>
 235         /// <returns>An integer giving the day of months, starting with 1.
 236         /// </returns>
 237         public override DayOfWeek GetDayOfWeek(DateTime time) {
 238                 int rd = CCFixed.FromDateTime(time);
 239                 return (DayOfWeek)CCFixed.day_of_week(rd);
 240         }
 241
 242         /// <summary>
 243         /// Overridden. Gives the number of the day in the year.
 244         /// </summary>
 245         /// <param name="time">The
 246         /// <see cref="T:System.DateTime"/> that specifies a
 247         /// date.
 248         /// </param>
 249         /// <returns>An integer representing the day of the year,
 250         /// starting with 1.</returns>
 251         public override int GetDayOfYear(DateTime time) {
 252                 return CCGregorianCalendar.GetDayOfYear(time);
 253         }
 254
 255         /// <summary>
 256         /// Overridden. Gives the number of days in the specified month
 257         /// of the given year and era.
 258         /// </summary>
 259         /// <param name="year">An integer that gives the year.
 260         /// </param>
 261         /// <param name="month">An integer that gives the month, starting
 262         /// with 1.</param>
 263         /// <param name="era">An intger that gives the era of the specified
 264         /// year.</param>
 265         /// <returns>An integer that gives the number of days of the
 266         /// specified month.</returns>
 267         /// <exception cref="T:System.ArgumentOutOfRangeException">
 268         /// The exception is thrown, if <paramref name="month"/>,
 269         /// <paramref name="year"/> ,or <paramref name="era"/> is outside
 270         /// the allowed range.
 271         /// </exception>
 272         public override int GetDaysInMonth(int year, int month, int era) {
 273                 // mscorlib doesn't check year, probably a bug; we do
 274                 M_CheckYME(year, month, ref era);
 275                 return CCGregorianCalendar.GetDaysInMonth(year, month);
 276         }
 277
 278         /// <summary>
 279         /// Overridden. Gives the number of days of the specified
 280         /// year of the given era.
 281         /// </summary>
 282         /// <param name="year">An integer that specifies the year.
 283         /// </param>
 284         /// <param name="era">An ineger that specifies the era.
 285         /// </param>
 286         /// <returns>An integer that gives the number of days of the
 287         /// specified year.</returns>
 288         /// <exception cref="T:System.ArgumentOutOfRangeExceiption">
 289         /// The exception is thrown, if
 290         /// <paramref name="year"/> is outside the allowed range.
 291         /// </exception>
 292         public override int GetDaysInYear(int year, int era) {
 293                 M_CheckYE(year, ref era);
 294                 return CCGregorianCalendar.GetDaysInYear(year);
 295         }
 296
 297
 298         /// <summary>
 299         /// Overridden. Gives the era of the specified date.
 300         /// </summary>
 301         /// <param name="time">The
 302         /// <see cref="T:System.DateTime"/> that specifies a
 303         /// date.
 304         /// </param>
 305         /// <returns>An integer representing the era of the calendar.
 306         /// </returns>
 307         public override int GetEra(DateTime time) {
 308                 return ADEra;
 309         }
 310
 311         /// <summary>
 312         /// Overridden. Gives the number of the month of the specified
 313         /// date.
 314         /// </summary>
 315         /// <param name="time">The
 316         /// <see cref="T:System.DateTime"/> that specifies a
 317         /// date.
 318         /// </param>
 319         /// <returns>An integer representing the month,
 320         /// starting with 1.</returns>
 321         public override int GetMonth(DateTime time) {
 322                 return CCGregorianCalendar.GetMonth(time);
 323         }
 324
 325         /// <summary>
 326         /// Overridden. Gives the number of months in the specified year
 327         /// and era.
 328         /// </summary>
 329         /// <param name="year">An integer that specifies the year.
 330         /// </param>
 331         /// <param name="era">An integer that specifies the era.
 332         /// </param>
 333         /// <returns>An integer that gives the number of the months in the
 334         /// specified year.</returns>
 335         /// <exception cref="T:System.ArgumentOutOfRangeException">
 336         /// The exception is thrown, if the year or the era are not valid.
 337         /// </exception>
 338         public override int GetMonthsInYear(int year, int era) {
 339                 M_CheckYE(year, ref era);
 340                 return 12;
 341         }
 342
 343         /// <summary>
 344         /// Overridden. Gives the number of the year of the specified
 345         /// date.
 346         /// </summary>
 347         /// <param name="time">The
 348         /// <see cref="T:System.DateTime"/> that specifies a
 349         /// date.
 350         /// </param>
 351         /// <returns>An integer representing the year,
 352         /// starting with 1.</returns>
 353         public override int GetYear(DateTime time) {
 354                 return CCGregorianCalendar.GetYear(time);
 355         }
 356
 357         /// <summary>
 358         /// Overridden. Tells whether the given day
 359         /// is a leap day.
 360         /// </summary>
 361         /// <param name="year">An integer that specifies the year in the
 362         /// given era.
 363         /// </param>
 364         /// <param name="month">An integer that specifies the month.
 365         /// </param>
 366         /// <param name="day">An integer that specifies the day.
 367         /// </param>
 368         /// <param name="era">An integer that specifies the era.
 369         /// </param>
 370         /// <returns>A boolean that tells whether the given day is a leap
 371         /// day.
 372         /// </returns>
 373         /// <exception cref="T:System.ArgumentOutOfRangeException">
 374         /// The exception is thrown, if the year, month, day, or era is not
 375         /// valid.
 376         /// </exception>
 377         public override bool IsLeapDay(int year, int month, int day, int era)
 378         {
 379                 M_CheckYMDE(year, month, day, ref era);
 380                 return CCGregorianCalendar.IsLeapDay(year, month, day);
 381         }
 382
 383
 384         /// <summary>
 385         /// Overridden. Tells whether the given month
 386         /// is a leap month.
 387         /// </summary>
 388         /// <param name="year">An integer that specifies the year in the
 389         /// given era.
 390         /// </param>
 391         /// <param name="month">An integer that specifies the month.
 392         /// </param>
 393         /// <param name="era">An integer that specifies the era.
 394         /// </param>
 395         /// <returns>A boolean that tells whether the given month is a leap
 396         /// month.
 397         /// </returns>
 398         /// <exception cref="T:System.ArgumentOutOfRangeException">
 399         /// The exception is thrown, if the year, month, or era is not
 400         /// valid.
 401         /// </exception>
 402         public override bool IsLeapMonth(int year, int month, int era) {
 403                 M_CheckYME(year, month, ref era);
 404                 return false;
 405         }
 406
 407         /// <summary>
 408         /// Overridden. Tells whether the given year
 409         /// is a leap year.
 410         /// </summary>
 411         /// <param name="year">An integer that specifies the year in the
 412         /// given era.
 413         /// </param>
 414         /// <param name="era">An integer that specifies the era.
 415         /// </param>
 416         /// <returns>A boolean that tells whether the given year is a leap
 417         /// year.
 418         /// </returns>
 419         /// <exception cref="T:System.ArgumentOutOfRangeException">
 420         /// The exception is thrown, if the year or era is not
 421         /// valid.
 422         /// </exception>
 423         public override bool IsLeapYear(int year, int era) {
 424                 M_CheckYE(year, ref era);
 425                 return CCGregorianCalendar.is_leap_year(year);
 426         }
 427
 428         /// <summary>
 429         /// Overridden. Creates the
 430         /// <see cref="T:System.DateTime"/> from the parameters.
 431         /// </summary>
 432         /// <param name="year">An integer that gives the year in the
 433         /// <paramref name="era"/>.
 434         /// </param>
 435         /// <param name="month">An integer that specifies the month.
 436         /// </param>
 437         /// <param name="day">An integer that specifies the day.
 438         /// </param>
 439         /// <param name="hour">An integer that specifies the hour.
 440         /// </param>
 441         /// <param name="minute">An integer that specifies the minute.
 442         /// </param>
 443         /// <param name="second">An integer that gives the second.
 444         /// </param>
 445         /// <param name="milliseconds">An integer that gives the
 446         /// milliseconds.
 447         /// </param>
 448         /// <param name="era">An integer that specifies the era.
 449         /// </param>
 450         /// <returns>
 451         /// <see cref="T:system.DateTime"/> representig the date and time.
 452         /// </returns>
 453         /// <exception cref="T:System.ArgumentOutOfRangeException">
 454         /// The exception is thrown, if at least one of the parameters
 455         /// is out of range.
 456         /// </exception>
 457         public override DateTime ToDateTime(int year, int month, int day,
 458                 int hour, int minute, int second, int milliseconds,
 459                 int era)
 460         {
 461                 M_CheckYMDE(year, month, day, ref era);
 462                 M_CheckHMSM(hour, minute, second, milliseconds);
 463                 return CCGregorianCalendar.ToDateTime(
 464                         year, month, day,
 465                         hour, minute, second, milliseconds);
 466         }
 467
 468         [MonoTODO]
 469         public override int ToFourDigitYear(int year)
 470         {
 471                 throw new NotImplementedException();
 472         }
 473
 474         /// <summary>
 475         /// Constructor that sets the
 476         /// Gregorian calendar type (
 477         /// <see cref="T:System.Globalization.GregorianCalendarTypes"/>).
 478         /// </summary>
 479         /// <param name="type">The parameter specifies the Gregorian
 480         /// calendar type.
 481         /// </param>
 482         public GregorianCalendar(GregorianCalendarTypes type) {
 483                 CalendarType = type;
 484                 M_AbbrEraNames = new string[] {"C.E."};
 485                 M_EraNames = new string[] {"Common Era"};
 486                 if (M_TwoDigitYearMax == 99)
 487                         M_TwoDigitYearMax = 2029;
 488         }
 489
 490         /// <summary>
 491         /// Default constructor. Sets the Gregorian calendar type to
 492         /// <see
 493         /// cref="F:System.Globalization.GregorianCalendarTypes.Localized"/>.
 494         /// </summary>
 495         public GregorianCalendar() : this(GregorianCalendarTypes.Localized) {}
 496 } // class GregorianCalendar
 497
 498 } // namespace System.Globalization