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 #if NET_2_0
  38         [System.Runtime.InteropServices.ComVisible (true)]
  39 #endif
  40         public struct UInt64 : IFormattable, IConvertible, IComparable
  41 #if NET_2_0
  42                 , IComparable<UInt64>, IEquatable <UInt64>
  43 #endif
  44         {
  45                 public const ulong MaxValue = 0xffffffffffffffff;
  46                 public const ulong MinValue = 0;
  47
  48                 internal ulong m_value;
  49
  50                 public int CompareTo (object value)
  51                 {
  52                         if (value == null)
  53                                 return 1;
  54
  55                         if (!(value is System.UInt64))
  56                                 throw new ArgumentException (Locale.GetText ("Value is not a System.UInt64."));
  57
  58                         if (this.m_value == (ulong) value)
  59                                 return 0;
  60
  61                         if (this.m_value < (ulong) value)
  62                                 return -1;
  63
  64                         return 1;
  65                 }
  66
  67                 public override bool Equals (object obj)
  68                 {
  69                         if (!(obj is System.UInt64))
  70                                 return false;
  71
  72                         return ((ulong) obj) == m_value;
  73                 }
  74
  75                 public override int GetHashCode ()
  76                 {
  77                         return (int)(m_value & 0xffffffff) ^ (int)(m_value >> 32);
  78                 }
  79
  80 #if NET_2_0
  81                 public int CompareTo (ulong value)
  82                 {
  83                         if (m_value == value)
  84                                 return 0;
  85                         if (m_value > value)
  86                                 return 1;
  87                         else
  88                                 return -1;
  89                 }
  90
  91                 public bool Equals (ulong value)
  92                 {
  93                         return value == m_value;
  94                 }
  95 #endif
  96
  97                 [CLSCompliant (false)]
  98                 public static ulong Parse (string s)
  99                 {
 100                         return Parse (s, NumberStyles.Integer, null);
 101                 }
 102
 103                 [CLSCompliant (false)]
 104                 public static ulong Parse (string s, IFormatProvider provider)
 105                 {
 106                         return Parse (s, NumberStyles.Integer, provider);
 107                 }
 108
 109                 [CLSCompliant (false)]
 110                 public static ulong Parse (string s, NumberStyles style)
 111                 {
 112                         return Parse (s, style, null);
 113                 }
 114
 115                 internal static bool Parse (string s, NumberStyles style, IFormatProvider provider, bool tryParse, out ulong result, out Exception exc)
 116                 {
 117                         result = 0;
 118                         exc = null;
 119
 120                         if (s == null) {
 121                                 if (!tryParse)
 122                                         exc = new ArgumentNullException ("s");
 123                                 return false;
 124                         }
 125
 126                         if (s.Length == 0) {
 127                                 if (!tryParse)
 128                                         exc = Int32.GetFormatException ();
 129                                 return false;
 130                         }
 131
 132                         NumberFormatInfo nfi;
 133                         if (provider != null) {
 134                                 Type typeNFI = typeof (NumberFormatInfo);
 135                                 nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
 136                         }
 137                         else
 138                                 nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
 139
 140                         if (!Int32.CheckStyle (style, tryParse, ref exc))
 141                                 return false;
 142
 143                         bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
 144                         bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
 145                         bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
 146                         bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
 147                         bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
 148                         bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
 149                         bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
 150                         bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
 151                         bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
 152
 153                         int pos = 0;
 154
 155                         if (AllowLeadingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 156                                 return false;
 157
 158                         bool foundOpenParentheses = false;
 159                         bool negative = false;
 160                         bool foundSign = false;
 161                         bool foundCurrency = false;
 162
 163                         // Pre-number stuff
 164                         if (AllowParentheses && s [pos] == '(') {
 165                                 foundOpenParentheses = true;
 166                                 foundSign = true;
 167                                 negative = true; // MS always make the number negative when there parentheses
 168                                                  // even when NumberFormatInfo.NumberNegativePattern != 0!!!
 169                                 pos++;
 170                                 if (AllowLeadingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 171                                         return false;
 172
 173                                 if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign) {
 174                                         if (!tryParse)
 175                                                 exc = Int32.GetFormatException ();
 176                                         return false;
 177                                 }
 178                                 if (s.Substring (pos, nfi.PositiveSign.Length) == nfi.PositiveSign) {
 179                                         if (!tryParse)
 180                                                 exc = Int32.GetFormatException ();
 181                                         return false;
 182                                 }
 183                         }
 184
 185                         if (AllowLeadingSign && !foundSign) {
 186                                 // Sign + Currency
 187                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 188                                 if (foundSign) {
 189                                         if (AllowLeadingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 190                                                 return false;
 191                                         if (AllowCurrencySymbol) {
 192                                                 Int32.FindCurrency (ref pos, s, nfi,
 193                                                                     ref foundCurrency);
 194                                                 if (foundCurrency && AllowLeadingWhite &&
 195                                                                 !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 196                                                         return false;
 197                                         }
 198                                 }
 199                         }
 200
 201                         if (AllowCurrencySymbol && !foundCurrency) {
 202                                 // Currency + sign
 203                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 204                                 if (foundCurrency) {
 205                                         if (AllowLeadingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 206                                                 return false;
 207                                         if (foundCurrency) {
 208                                                 if (!foundSign && AllowLeadingSign) {
 209                                                         Int32.FindSign (ref pos, s, nfi, ref foundSign,
 210                                                                         ref negative);
 211                                                         if (foundSign && AllowLeadingWhite &&
 212                                                                         !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 213                                                                 return false;
 214                                                 }
 215                                         }
 216                                 }
 217                         }
 218
 219                         ulong number = 0;
 220                         int nDigits = 0;
 221                         bool decimalPointFound = false;
 222                         ulong digitValue;
 223                         char hexDigit;
 224
 225                         // Number stuff
 226                         // Just the same as Int32, but this one adds instead of substract
 227                         do {
 228
 229                                 if (!Int32.ValidDigit (s [pos], AllowHexSpecifier)) {
 230                                         if (AllowThousands && Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
 231                                                 continue;
 232                                         else
 233                                                 if (!decimalPointFound && AllowDecimalPoint &&
 234                                                     Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
 235                                                         decimalPointFound = true;
 236                                                         continue;
 237                                                 }
 238                                         break;
 239                                 }
 240                                 else if (AllowHexSpecifier) {
 241                                         nDigits++;
 242                                         hexDigit = s [pos++];
 243                                         if (Char.IsDigit (hexDigit))
 244                                                 digitValue = (ulong) (hexDigit - '0');
 245                                         else if (Char.IsLower (hexDigit))
 246                                                 digitValue = (ulong) (hexDigit - 'a' + 10);
 247                                         else
 248                                                 digitValue = (ulong) (hexDigit - 'A' + 10);
 249
 250                                         if (tryParse){
 251                                                 // Any number above 32 will do
 252                                                 bool can_overflow = number > 0xffff;
 253
 254                                                 number = number * 16 + digitValue;
 255
 256                                                 if (can_overflow && number < 16)
 257                                                         return false;
 258                                         } else
 259                                                 number = checked (number * 16 + digitValue);
 260                                 }
 261                                 else if (decimalPointFound) {
 262                                         nDigits++;
 263                                         // Allows decimal point as long as it's only
 264                                         // followed by zeroes.
 265                                         if (s [pos++] != '0') {
 266                                                 if (!tryParse)
 267                                                         exc = new OverflowException (Locale.GetText ("Value too large or too small."));
 268                                                 return false;
 269                                         }
 270                                 }
 271                                 else {
 272                                         nDigits++;
 273
 274                                         try {
 275                                                 number = checked (number * 10 + (ulong) (s [pos++] - '0'));
 276                                         }
 277                                         catch (OverflowException) {
 278                                                 if (!tryParse)
 279                                                         exc = new OverflowException (Locale.GetText ("Value too large or too small."));
 280                                                 return false;
 281                                         }
 282                                 }
 283                         } while (pos < s.Length);
 284
 285                         // Post number stuff
 286                         if (nDigits == 0) {
 287                                 if (!tryParse)
 288                                         exc = Int32.GetFormatException ();
 289                                 return false;
 290                         }
 291
 292                         if (AllowTrailingSign && !foundSign) {
 293                                 // Sign + Currency
 294                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 295                                 if (foundSign) {
 296                                         if (AllowTrailingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 297                                                 return false;
 298                                         if (AllowCurrencySymbol)
 299                                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 300                                 }
 301                         }
 302
 303                         if (AllowCurrencySymbol && !foundCurrency) {
 304                                 // Currency + sign
 305                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 306                                 if (foundCurrency) {
 307                                         if (AllowTrailingWhite && !Int32.JumpOverWhite (ref pos, s, true, tryParse, ref exc))
 308                                                 return false;
 309                                         if (!foundSign && AllowTrailingSign)
 310                                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 311                                 }
 312                         }
 313
 314                         if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite (ref pos, s, false, tryParse, ref exc))
 315                                 return false;
 316
 317                         if (foundOpenParentheses) {
 318                                 if (pos >= s.Length || s [pos++] != ')') {
 319                                         if (!tryParse)
 320                                                 exc = Int32.GetFormatException ();
 321                                         return false;
 322                                 }
 323                                 if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite (ref pos, s, false, tryParse, ref exc))
 324                                         return false;
 325                         }
 326
 327                         if (pos < s.Length && s [pos] != '\u0000') {
 328                                 if (!tryParse)
 329                                         exc = Int32.GetFormatException ();
 330                                 return false;
 331                         }
 332
 333                         // -0 is legal but other negative values are not
 334                         if (negative && (number > 0)) {
 335                                 if (!tryParse)
 336                                         exc = new OverflowException (
 337                                             Locale.GetText ("Negative number"));
 338                                 return false;
 339                         }
 340
 341                         result = number;
 342                         return true;
 343                 }
 344
 345                 [CLSCompliant (false)]
 346                 public static ulong Parse (string s, NumberStyles style, IFormatProvider fp)
 347                 {
 348                         Exception exc;
 349                         ulong res;
 350
 351                         if (!Parse (s, style, fp, false, out res, out exc))
 352                                 throw exc;
 353
 354                         return res;
 355                 }
 356
 357
 358 #if NET_2_0
 359                 [CLSCompliant (false)]
 360                 public static bool TryParse (string s, out ulong result)
 361                 {
 362                         Exception exc;
 363                         if (!Parse (s, NumberStyles.Integer, null, true, out result, out exc)) {
 364                                 result = 0;
 365                                 return false;
 366                         }
 367
 368                         return true;
 369                 }
 370
 371                 [CLSCompliant (false)]
 372                 public static bool TryParse (string s, NumberStyles style, IFormatProvider provider, out ulong result)
 373                 {
 374                         Exception exc;
 375                         if (!Parse (s, style, provider, true, out result, out exc)) {
 376                                 result = 0;
 377                                 return false;
 378                         }
 379
 380                         return true;
 381                 }
 382 #endif
 383
 384                 public override string ToString ()
 385                 {
 386                         return new NumberFormatter(null, m_value).FormatDecimal(-1, null);
 387                 }
 388
 389                 public string ToString (IFormatProvider provider)
 390                 {
 391                         NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
 392                         return new NumberFormatter(null, m_value).FormatDecimal(-1, nfi);
 393                 }
 394
 395                 public string ToString (string format)
 396                 {
 397                         return ToString (format, null);
 398                 }
 399
 400                 public string ToString (string format, IFormatProvider provider)
 401                 {
 402                         NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
 403                         return NumberFormatter.NumberToString (format, m_value, nfi);
 404                 }
 405
 406                 // =========== IConvertible Methods =========== //
 407                 public TypeCode GetTypeCode ()
 408                 {
 409                         return TypeCode.UInt64;
 410                 }
 411
 412                 bool IConvertible.ToBoolean (IFormatProvider provider)
 413                 {
 414                         return System.Convert.ToBoolean (m_value);
 415                 }
 416
 417                 byte IConvertible.ToByte (IFormatProvider provider)
 418                 {
 419                         return System.Convert.ToByte (m_value);
 420                 }
 421
 422                 char IConvertible.ToChar (IFormatProvider provider)
 423                 {
 424                         return System.Convert.ToChar (m_value);
 425                 }
 426
 427                 DateTime IConvertible.ToDateTime (IFormatProvider provider)
 428                 {
 429                         return System.Convert.ToDateTime (m_value);
 430                 }
 431
 432                 decimal IConvertible.ToDecimal (IFormatProvider provider)
 433                 {
 434                         return System.Convert.ToDecimal (m_value);
 435                 }
 436
 437                 double IConvertible.ToDouble (IFormatProvider provider)
 438                 {
 439                         return System.Convert.ToDouble (m_value);
 440                 }
 441
 442                 short IConvertible.ToInt16 (IFormatProvider provider)
 443                 {
 444                         return System.Convert.ToInt16 (m_value);
 445                 }
 446
 447                 int IConvertible.ToInt32 (IFormatProvider provider)
 448                 {
 449                         return System.Convert.ToInt32 (m_value);
 450                 }
 451
 452                 long IConvertible.ToInt64 (IFormatProvider provider)
 453                 {
 454                         return System.Convert.ToInt64 (m_value);
 455                 }
 456
 457                 sbyte IConvertible.ToSByte(IFormatProvider provider)
 458                 {
 459                         return System.Convert.ToSByte (m_value);
 460                 }
 461
 462                 float IConvertible.ToSingle (IFormatProvider provider)
 463                 {
 464                         return System.Convert.ToSingle (m_value);
 465                 }
 466
 467                 object IConvertible.ToType (Type conversionType, IFormatProvider provider)
 468                 {
 469                         return System.Convert.ToType (m_value, conversionType, provider);
 470                 }
 471
 472                 ushort IConvertible.ToUInt16 (IFormatProvider provider)
 473                 {
 474                         return System.Convert.ToUInt16 (m_value);
 475                 }
 476
 477                 uint IConvertible.ToUInt32 (IFormatProvider provider)
 478                 {
 479                         return System.Convert.ToUInt32 (m_value);
 480                 }
 481
 482                 ulong IConvertible.ToUInt64 (IFormatProvider provider)
 483                 {
 484                         return m_value;
 485                 }
 486         }
 487 }