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, IComparable
  38 #if NET_2_0
  39                 , IComparable<UInt64>, IEquatable <UInt64>
  40 #endif
  41         {
  42                 public const ulong MaxValue = 0xffffffffffffffff;
  43                 public const ulong MinValue = 0;
  44
  45                 internal ulong m_value;
  46
  47                 public int CompareTo (object value)
  48                 {
  49                         if (value == null)
  50                                 return 1;
  51
  52                         if (!(value is System.UInt64))
  53                                 throw new ArgumentException (Locale.GetText ("Value is not a System.UInt64."));
  54
  55                         if (this.m_value == (ulong) value)
  56                                 return 0;
  57
  58                         if (this.m_value < (ulong) value)
  59                                 return -1;
  60
  61                         return 1;
  62                 }
  63
  64                 public override bool Equals (object obj)
  65                 {
  66                         if (!(obj is System.UInt64))
  67                                 return false;
  68
  69                         return ((ulong) obj) == m_value;
  70                 }
  71
  72                 public override int GetHashCode ()
  73                 {
  74                         return (int)(m_value & 0xffffffff) ^ (int)(m_value >> 32);
  75                 }
  76
  77 #if NET_2_0
  78                 public int CompareTo (ulong value)
  79                 {
  80                         if (m_value == value)
  81                                 return 0;
  82                         if (m_value > value)
  83                                 return 1;
  84                         else
  85                                 return -1;
  86                 }
  87
  88                 public bool Equals (ulong value)
  89                 {
  90                         return value == m_value;
  91                 }
  92 #endif
  93
  94                 [CLSCompliant (false)]
  95                 public static ulong Parse (string s)
  96                 {
  97                         return Parse (s, NumberStyles.Integer, null);
  98                 }
  99
 100                 [CLSCompliant (false)]
 101                 public static ulong Parse (string s, IFormatProvider provider)
 102                 {
 103                         return Parse (s, NumberStyles.Integer, provider);
 104                 }
 105
 106                 [CLSCompliant (false)]
 107                 public static ulong Parse (string s, NumberStyles style)
 108                 {
 109                         return Parse (s, style, null);
 110                 }
 111
 112                 internal static bool Parse (string s, NumberStyles style, IFormatProvider provider, bool tryParse, out ulong result, out Exception exc)
 113                 {
 114                         result = 0;
 115                         exc = null;
 116
 117                         if (s == null) {
 118                                 if (!tryParse)
 119                                         exc = new ArgumentNullException ("s");
 120                                 return false;
 121                         }
 122
 123                         if (s.Length == 0) {
 124                                 if (!tryParse)
 125                                         exc = Int32.GetFormatException ();
 126                                 return false;
 127                         }
 128
 129                         NumberFormatInfo nfi;
 130                         if (provider != null) {
 131                                 Type typeNFI = typeof (NumberFormatInfo);
 132                                 nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
 133                         }
 134                         else
 135                                 nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
 136
 137                         if (!Int32.CheckStyle (style, tryParse, ref exc))
 138                                 return false;
 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 && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 153                                 return false;
 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 && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 168                                         return false;
 169
 170                                 if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign) {
 171                                         if (!tryParse)
 172                                                 exc = Int32.GetFormatException ();
 173                                         return false;
 174                                 }
 175                                 if (s.Substring (pos, nfi.PositiveSign.Length) == nfi.PositiveSign) {
 176                                         if (!tryParse)
 177                                                 exc = Int32.GetFormatException ();
 178                                         return false;
 179                                 }
 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 && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 187                                                 return false;
 188                                         if (AllowCurrencySymbol) {
 189                                                 Int32.FindCurrency (ref pos, s, nfi,
 190                                                                     ref foundCurrency);
 191                                                 if (foundCurrency && AllowLeadingWhite &&
 192                                                                 !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 193                                                         return false;
 194                                         }
 195                                 }
 196                         }
 197
 198                         if (AllowCurrencySymbol && !foundCurrency) {
 199                                 // Currency + sign
 200                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 201                                 if (foundCurrency) {
 202                                         if (AllowLeadingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 203                                                 return false;
 204                                         if (foundCurrency) {
 205                                                 if (!foundSign && AllowLeadingSign) {
 206                                                         Int32.FindSign (ref pos, s, nfi, ref foundSign,
 207                                                                         ref negative);
 208                                                         if (foundSign && AllowLeadingWhite &&
 209                                                                         !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 210                                                                 return false;
 211                                                 }
 212                                         }
 213                                 }
 214                         }
 215
 216                         ulong number = 0;
 217                         int nDigits = 0;
 218                         bool decimalPointFound = false;
 219                         ulong digitValue;
 220                         char hexDigit;
 221
 222                         // Number stuff
 223                         // Just the same as Int32, but this one adds instead of substract
 224                         do {
 225
 226                                 if (!Int32.ValidDigit (s [pos], AllowHexSpecifier)) {
 227                                         if (AllowThousands && Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
 228                                                 continue;
 229                                         else
 230                                                 if (!decimalPointFound && AllowDecimalPoint &&
 231                                                     Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
 232                                                         decimalPointFound = true;
 233                                                         continue;
 234                                                 }
 235                                         break;
 236                                 }
 237                                 else if (AllowHexSpecifier) {
 238                                         nDigits++;
 239                                         hexDigit = s [pos++];
 240                                         if (Char.IsDigit (hexDigit))
 241                                                 digitValue = (ulong) (hexDigit - '0');
 242                                         else if (Char.IsLower (hexDigit))
 243                                                 digitValue = (ulong) (hexDigit - 'a' + 10);
 244                                         else
 245                                                 digitValue = (ulong) (hexDigit - 'A' + 10);
 246
 247                                         number = checked (number * 16 + digitValue);
 248                                 }
 249                                 else if (decimalPointFound) {
 250                                         nDigits++;
 251                                         // Allows decimal point as long as it's only
 252                                         // followed by zeroes.
 253                                         if (s [pos++] != '0') {
 254                                                 if (!tryParse)
 255                                                         exc = new OverflowException (Locale.GetText ("Value too large or too small."));
 256                                                 return false;
 257                                         }
 258                                 }
 259                                 else {
 260                                         nDigits++;
 261
 262                                         try {
 263                                                 number = checked (number * 10 + (ulong) (s [pos++] - '0'));
 264                                         }
 265                                         catch (OverflowException) {
 266                                                 if (!tryParse)
 267                                                         exc = new OverflowException (Locale.GetText ("Value too large or too small."));
 268                                                 return false;
 269                                         }
 270                                 }
 271                         } while (pos < s.Length);
 272
 273                         // Post number stuff
 274                         if (nDigits == 0) {
 275                                 if (!tryParse)
 276                                         exc = Int32.GetFormatException ();
 277                                 return false;
 278                         }
 279
 280                         if (AllowTrailingSign && !foundSign) {
 281                                 // Sign + Currency
 282                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 283                                 if (foundSign) {
 284                                         if (AllowTrailingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 285                                                 return false;
 286                                         if (AllowCurrencySymbol)
 287                                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 288                                 }
 289                         }
 290
 291                         if (AllowCurrencySymbol && !foundCurrency) {
 292                                 // Currency + sign
 293                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 294                                 if (foundCurrency) {
 295                                         if (AllowTrailingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 296                                                 return false;
 297                                         if (!foundSign && AllowTrailingSign)
 298                                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 299                                 }
 300                         }
 301
 302                         if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite (ref pos, s, false, tryParse, ref exc))
 303                                 return false;
 304
 305                         if (foundOpenParentheses) {
 306                                 if (pos >= s.Length || s [pos++] != ')') {
 307                                         if (!tryParse)
 308                                                 exc = Int32.GetFormatException ();
 309                                         return false;
 310                                 }
 311                                 if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite (ref pos, s, false, tryParse, ref exc))
 312                                         return false;
 313                         }
 314
 315                         if (pos < s.Length && s [pos] != '\u0000') {
 316                                 if (!tryParse)
 317                                         exc = Int32.GetFormatException ();
 318                                 return false;
 319                         }
 320
 321                         // -0 is legal but other negative values are not
 322                         if (negative && (number > 0)) {
 323                                 if (!tryParse)
 324                                         exc = new OverflowException (
 325                                             Locale.GetText ("Negative number"));
 326                                 return false;
 327                         }
 328
 329                         result = number;
 330                         return true;
 331                 }
 332
 333                 [CLSCompliant (false)]
 334                 public static ulong Parse (string s, NumberStyles style, IFormatProvider fp)
 335                 {
 336                         Exception exc;
 337                         ulong res;
 338
 339                         if (!Parse (s, style, fp, false, out res, out exc))
 340                                 throw exc;
 341
 342                         return res;
 343                 }
 344
 345
 346 #if NET_2_0
 347                 [CLSCompliant (false)]
 348                 public static bool TryParse (string s, out ulong result)
 349                 {
 350                         Exception exc;
 351                         if (!Parse (s, NumberStyles.Integer, null, true, out result, out exc)) {
 352                                 result = 0;
 353                                 return false;
 354                         }
 355
 356                         return true;
 357                 }
 358
 359                 [CLSCompliant (false)]
 360                 public static bool TryParse (string s, NumberStyles style, IFormatProvider provider, out ulong result)
 361                 {
 362                         Exception exc;
 363                         if (!Parse (s, style, provider, true, out result, out exc)) {
 364                                 result = 0;
 365                                 return false;
 366                         }
 367
 368                         return true;
 369                 }
 370 #endif
 371
 372                 public override string ToString ()
 373                 {
 374                         return NumberFormatter.FormatGeneral (new NumberFormatter.NumberStore (m_value));
 375                 }
 376
 377                 public string ToString (IFormatProvider provider)
 378                 {
 379                         return NumberFormatter.FormatGeneral (new NumberFormatter.NumberStore (m_value), provider);
 380                 }
 381
 382                 public string ToString (string format)
 383                 {
 384                         return ToString (format, null);
 385                 }
 386
 387                 public string ToString (string format, IFormatProvider provider)
 388                 {
 389                         NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
 390                         return NumberFormatter.NumberToString (format, m_value, nfi);
 391                 }
 392
 393                 // =========== IConvertible Methods =========== //
 394                 public TypeCode GetTypeCode ()
 395                 {
 396                         return TypeCode.UInt64;
 397                 }
 398
 399                 bool IConvertible.ToBoolean (IFormatProvider provider)
 400                 {
 401                         return System.Convert.ToBoolean (m_value);
 402                 }
 403
 404                 byte IConvertible.ToByte (IFormatProvider provider)
 405                 {
 406                         return System.Convert.ToByte (m_value);
 407                 }
 408
 409                 char IConvertible.ToChar (IFormatProvider provider)
 410                 {
 411                         return System.Convert.ToChar (m_value);
 412                 }
 413
 414                 DateTime IConvertible.ToDateTime (IFormatProvider provider)
 415                 {
 416                         return System.Convert.ToDateTime (m_value);
 417                 }
 418
 419                 decimal IConvertible.ToDecimal (IFormatProvider provider)
 420                 {
 421                         return System.Convert.ToDecimal (m_value);
 422                 }
 423
 424                 double IConvertible.ToDouble (IFormatProvider provider)
 425                 {
 426                         return System.Convert.ToDouble (m_value);
 427                 }
 428
 429                 short IConvertible.ToInt16 (IFormatProvider provider)
 430                 {
 431                         return System.Convert.ToInt16 (m_value);
 432                 }
 433
 434                 int IConvertible.ToInt32 (IFormatProvider provider)
 435                 {
 436                         return System.Convert.ToInt32 (m_value);
 437                 }
 438
 439                 long IConvertible.ToInt64 (IFormatProvider provider)
 440                 {
 441                         return System.Convert.ToInt64 (m_value);
 442                 }
 443
 444                 sbyte IConvertible.ToSByte(IFormatProvider provider)
 445                 {
 446                         return System.Convert.ToSByte (m_value);
 447                 }
 448
 449                 float IConvertible.ToSingle (IFormatProvider provider)
 450                 {
 451                         return System.Convert.ToSingle (m_value);
 452                 }
 453
 454                 object IConvertible.ToType (Type conversionType, IFormatProvider provider)
 455                 {
 456                         return System.Convert.ToType (m_value, conversionType, provider);
 457                 }
 458
 459                 ushort IConvertible.ToUInt16 (IFormatProvider provider)
 460                 {
 461                         return System.Convert.ToUInt16 (m_value);
 462                 }
 463
 464                 uint IConvertible.ToUInt32 (IFormatProvider provider)
 465                 {
 466                         return System.Convert.ToUInt32 (m_value);
 467                 }
 468
 469                 ulong IConvertible.ToUInt64 (IFormatProvider provider)
 470                 {
 471                         return m_value;
 472                 }
 473         }
 474 }