mcs/class/corlib/System/UInt64.cs

   1 //
   2 // System.UInt64.cs
   3 //
   4 // Author:
   5 //   Miguel de Icaza (miguel@ximian.com)
   6 //
   7 // (C) Ximian, Inc.  http://www.ximian.com
   8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Globalization;
  31 using System.Threading;
  32
  33 namespace System
  34 {
  35         [Serializable]
  36         [CLSCompliant (false)]
  37         public struct UInt64 : IFormattable, IConvertible,
  38 #if NET_2_0
  39                 IComparable, IComparable<UInt64>
  40 #else
  41                 IComparable
  42 #endif
  43         {
  44                 public const ulong MaxValue = 0xffffffffffffffff;
  45                 public const ulong MinValue = 0;
  46
  47                 internal ulong m_value;
  48
  49                 public int CompareTo (object value)
  50                 {
  51                         if (value == null)
  52                                 return 1;
  53
  54                         if (!(value is System.UInt64))
  55                                 throw new ArgumentException (Locale.GetText ("Value is not a System.UInt64."));
  56
  57                         if (this.m_value == (ulong) value)
  58                                 return 0;
  59
  60                         if (this.m_value < (ulong) value)
  61                                 return -1;
  62
  63                         return 1;
  64                 }
  65
  66                 public override bool Equals (object obj)
  67                 {
  68                         if (!(obj is System.UInt64))
  69                                 return false;
  70
  71                         return ((ulong) obj) == m_value;
  72                 }
  73
  74                 public override int GetHashCode ()
  75                 {
  76                         return (int)(m_value & 0xffffffff) ^ (int)(m_value >> 32);
  77                 }
  78
  79 #if NET_2_0
  80                 public int CompareTo (ulong value)
  81                 {
  82                         if (m_value == value)
  83                                 return 0;
  84                         if (m_value > value)
  85                                 return 1;
  86                         else
  87                                 return -1;
  88                 }
  89
  90                 public bool Equals (ulong value)
  91                 {
  92                         return value == m_value;
  93                 }
  94 #endif
  95
  96                 [CLSCompliant (false)]
  97                 public static ulong Parse (string s)
  98                 {
  99                         return Parse (s, NumberStyles.Integer, null);
 100                 }
 101
 102                 [CLSCompliant (false)]
 103                 public static ulong Parse (string s, IFormatProvider provider)
 104                 {
 105                         return Parse (s, NumberStyles.Integer, provider);
 106                 }
 107
 108                 [CLSCompliant (false)]
 109                 public static ulong Parse (string s, NumberStyles style)
 110                 {
 111                         return Parse (s, style, null);
 112                 }
 113
 114                 internal static bool Parse (string s, NumberStyles style, IFormatProvider provider, bool tryParse, out ulong result)
 115                 {
 116                         result = 0;
 117
 118                         if (s == null)
 119                                 if (tryParse)
 120                                         return false;
 121                                 else
 122                                         throw new ArgumentNullException ("s");
 123
 124                         if (s.Length == 0)
 125                                 if (tryParse)
 126                                         return false;
 127                                 else
 128                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 129
 130                         NumberFormatInfo nfi;
 131                         if (provider != null) {
 132                                 Type typeNFI = typeof (NumberFormatInfo);
 133                                 nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
 134                         }
 135                         else
 136                                 nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
 137
 138                         Int32.CheckStyle (style);
 139
 140                         bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
 141                         bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
 142                         bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
 143                         bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
 144                         bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
 145                         bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
 146                         bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
 147                         bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
 148                         bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
 149
 150                         int pos = 0;
 151
 152                         if (AllowLeadingWhite)
 153                                 pos = Int32.JumpOverWhite (pos, s, true);
 154
 155                         bool foundOpenParentheses = false;
 156                         bool negative = false;
 157                         bool foundSign = false;
 158                         bool foundCurrency = false;
 159
 160                         // Pre-number stuff
 161                         if (AllowParentheses && s [pos] == '(') {
 162                                 foundOpenParentheses = true;
 163                                 foundSign = true;
 164                                 negative = true; // MS always make the number negative when there parentheses
 165                                                  // even when NumberFormatInfo.NumberNegativePattern != 0!!!
 166                                 pos++;
 167                                 if (AllowLeadingWhite)
 168                                         pos = Int32.JumpOverWhite (pos, s, true);
 169
 170                                 if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
 171                                         if (tryParse)
 172                                                 return false;
 173                                         else
 174                                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 175                                 if (s.Substring (pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
 176                                         if (tryParse)
 177                                                 return false;
 178                                         else
 179                                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 180                         }
 181
 182                         if (AllowLeadingSign && !foundSign) {
 183                                 // Sign + Currency
 184                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 185                                 if (foundSign) {
 186                                         if (AllowLeadingWhite)
 187                                                 pos = Int32.JumpOverWhite (pos, s, true);
 188                                         if (AllowCurrencySymbol) {
 189                                                 Int32.FindCurrency (ref pos, s, nfi,
 190                                                                     ref foundCurrency);
 191                                                 if (foundCurrency && AllowLeadingWhite)
 192                                                         pos = Int32.JumpOverWhite (pos, s, true);
 193                                         }
 194                                 }
 195                         }
 196
 197                         if (AllowCurrencySymbol && !foundCurrency) {
 198                                 // Currency + sign
 199                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 200                                 if (foundCurrency) {
 201                                         if (AllowLeadingWhite)
 202                                                 pos = Int32.JumpOverWhite (pos, s, true);
 203                                         if (foundCurrency) {
 204                                                 if (!foundSign && AllowLeadingSign) {
 205                                                         Int32.FindSign (ref pos, s, nfi, ref foundSign,
 206                                                                         ref negative);
 207                                                         if (foundSign && AllowLeadingWhite)
 208                                                                 pos = Int32.JumpOverWhite (pos, s, true);
 209                                                 }
 210                                         }
 211                                 }
 212                         }
 213
 214                         ulong number = 0;
 215                         int nDigits = 0;
 216                         bool decimalPointFound = false;
 217                         ulong digitValue;
 218                         char hexDigit;
 219
 220                         // Number stuff
 221                         // Just the same as Int32, but this one adds instead of substract
 222                         do {
 223
 224                                 if (!Int32.ValidDigit (s [pos], AllowHexSpecifier)) {
 225                                         if (AllowThousands && Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
 226                                                 continue;
 227                                         else
 228                                                 if (!decimalPointFound && AllowDecimalPoint &&
 229                                                     Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
 230                                                         decimalPointFound = true;
 231                                                         continue;
 232                                                 }
 233                                         break;
 234                                 }
 235                                 else if (AllowHexSpecifier) {
 236                                         nDigits++;
 237                                         hexDigit = s [pos++];
 238                                         if (Char.IsDigit (hexDigit))
 239                                                 digitValue = (ulong) (hexDigit - '0');
 240                                         else if (Char.IsLower (hexDigit))
 241                                                 digitValue = (ulong) (hexDigit - 'a' + 10);
 242                                         else
 243                                                 digitValue = (ulong) (hexDigit - 'A' + 10);
 244
 245                                         number = checked (number * 16 + digitValue);
 246                                 }
 247                                 else if (decimalPointFound) {
 248                                         nDigits++;
 249                                         // Allows decimal point as long as it's only
 250                                         // followed by zeroes.
 251                                         if (s [pos++] != '0')
 252                                                 if (tryParse)
 253                                                         return false;
 254                                                 else
 255                                                         throw new OverflowException (Locale.GetText ("Value too large or too small."));
 256                                 }
 257                                 else {
 258                                         nDigits++;
 259
 260                                         try {
 261                                                 number = checked (number * 10 + (ulong) (s [pos++] - '0'));
 262                                         }
 263                                         catch (OverflowException) {
 264                                                 if (tryParse)
 265                                                         return false;
 266                                                 else
 267                                                         throw new OverflowException (Locale.GetText ("Value too large or too small."));
 268                                         }
 269                                 }
 270                         } while (pos < s.Length);
 271
 272                         // Post number stuff
 273                         if (nDigits == 0)
 274                                 if (tryParse)
 275                                         return false;
 276                                 else
 277                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 278
 279                         if (AllowTrailingSign && !foundSign) {
 280                                 // Sign + Currency
 281                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 282                                 if (foundSign) {
 283                                         if (AllowTrailingWhite)
 284                                                 pos = Int32.JumpOverWhite (pos, s, true);
 285                                         if (AllowCurrencySymbol)
 286                                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 287                                 }
 288                         }
 289
 290                         if (AllowCurrencySymbol && !foundCurrency) {
 291                                 // Currency + sign
 292                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 293                                 if (foundCurrency) {
 294                                         if (AllowTrailingWhite)
 295                                                 pos = Int32.JumpOverWhite (pos, s, true);
 296                                         if (!foundSign && AllowTrailingSign)
 297                                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 298                                 }
 299                         }
 300
 301                         if (AllowTrailingWhite && pos < s.Length)
 302                                 pos = Int32.JumpOverWhite (pos, s, false);
 303
 304                         if (foundOpenParentheses) {
 305                                 if (pos >= s.Length || s [pos++] != ')')
 306                                         if (tryParse)
 307                                                 return false;
 308                                         else
 309                                                 throw new FormatException (Locale.GetText
 310                                                     ("Input string was not in the correct format."));
 311                                 if (AllowTrailingWhite && pos < s.Length)
 312                                         pos = Int32.JumpOverWhite (pos, s, false);
 313                         }
 314
 315                         if (pos < s.Length && s [pos] != '\u0000')
 316                                 if (tryParse)
 317                                         return false;
 318                                 else
 319                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 320
 321                         // -0 is legal but other negative values are not
 322                         if (negative && (number > 0)) {
 323                                 if (tryParse)
 324                                         return false;
 325                                 else
 326                                         throw new OverflowException (
 327                                             Locale.GetText ("Negative number"));
 328                         }
 329
 330                         result = number;
 331                         return true;
 332                 }
 333
 334                 [CLSCompliant (false)]
 335                 public static ulong Parse (string s, NumberStyles style, IFormatProvider fp) {
 336                         ulong res;
 337
 338                         Parse (s, style, fp, false, out res);
 339
 340                         return res;
 341                 }
 342
 343
 344 #if NET_2_0
 345                 [CLSCompliant (false)]
 346                 public static bool TryParse (string s, out ulong result) {
 347                         try {
 348                                 return Parse (s, NumberStyles.Integer, null, true, out result);
 349                         }
 350                         catch (Exception) {
 351                                 result = 0;
 352                                 return false;
 353                         }
 354                 }
 355
 356                 [CLSCompliant (false)]
 357                 public static bool TryParse (string s, NumberStyles style, IFormatProvider provider, out ulong result) {
 358                         try {
 359                                 return Parse (s, style, provider, true, out result);
 360                         }
 361                         catch (Exception) {
 362                                 result = 0;
 363                                 return false;
 364                         }
 365                 }
 366 #endif
 367
 368                 public override string ToString ()
 369                 {
 370                         return ToString (null, null);
 371                 }
 372
 373                 public string ToString (IFormatProvider provider)
 374                 {
 375                         return ToString (null, provider);
 376                 }
 377
 378                 public string ToString (string format)
 379                 {
 380                         return ToString (format, null);
 381                 }
 382
 383                 public string ToString (string format, IFormatProvider provider)
 384                 {
 385                         NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
 386
 387                         // use "G" when format is null or String.Empty
 388                         if ((format == null) || (format.Length == 0))
 389                                 format = "G";
 390
 391                         return IntegerFormatter.NumberToString (format, nfi, m_value);
 392                 }
 393
 394                 // =========== IConvertible Methods =========== //
 395                 public TypeCode GetTypeCode ()
 396                 {
 397                         return TypeCode.UInt64;
 398                 }
 399
 400                 bool IConvertible.ToBoolean (IFormatProvider provider)
 401                 {
 402                         return System.Convert.ToBoolean (m_value);
 403                 }
 404
 405                 byte IConvertible.ToByte (IFormatProvider provider)
 406                 {
 407                         return System.Convert.ToByte (m_value);
 408                 }
 409
 410                 char IConvertible.ToChar (IFormatProvider provider)
 411                 {
 412                         return System.Convert.ToChar (m_value);
 413                 }
 414
 415                 DateTime IConvertible.ToDateTime (IFormatProvider provider)
 416                 {
 417                         return System.Convert.ToDateTime (m_value);
 418                 }
 419
 420                 decimal IConvertible.ToDecimal (IFormatProvider provider)
 421                 {
 422                         return System.Convert.ToDecimal (m_value);
 423                 }
 424
 425                 double IConvertible.ToDouble (IFormatProvider provider)
 426                 {
 427                         return System.Convert.ToDouble (m_value);
 428                 }
 429
 430                 short IConvertible.ToInt16 (IFormatProvider provider)
 431                 {
 432                         return System.Convert.ToInt16 (m_value);
 433                 }
 434
 435                 int IConvertible.ToInt32 (IFormatProvider provider)
 436                 {
 437                         return System.Convert.ToInt32 (m_value);
 438                 }
 439
 440                 long IConvertible.ToInt64 (IFormatProvider provider)
 441                 {
 442                         return System.Convert.ToInt64 (m_value);
 443                 }
 444
 445                 sbyte IConvertible.ToSByte(IFormatProvider provider)
 446                 {
 447                         return System.Convert.ToSByte (m_value);
 448                 }
 449
 450                 float IConvertible.ToSingle (IFormatProvider provider)
 451                 {
 452                         return System.Convert.ToSingle (m_value);
 453                 }
 454
 455                 object IConvertible.ToType (Type conversionType, IFormatProvider provider)
 456                 {
 457                         return System.Convert.ToType (m_value, conversionType, provider);
 458                 }
 459
 460                 ushort IConvertible.ToUInt16 (IFormatProvider provider)
 461                 {
 462                         return System.Convert.ToUInt16 (m_value);
 463                 }
 464
 465                 uint IConvertible.ToUInt32 (IFormatProvider provider)
 466                 {
 467                         return System.Convert.ToUInt32 (m_value);
 468                 }
 469
 470                 ulong IConvertible.ToUInt64 (IFormatProvider provider)
 471                 {
 472                         return m_value;
 473                 }
 474         }
 475 }