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                 [CLSCompliant (false)]
 115                 public static ulong Parse (string s, NumberStyles style, IFormatProvider provider)
 116                 {
 117                         if (s == null)
 118                                 throw new ArgumentNullException ("s");
 119
 120                         if (s.Length == 0)
 121                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 122
 123                         NumberFormatInfo nfi;
 124                         if (provider != null) {
 125                                 Type typeNFI = typeof (NumberFormatInfo);
 126                                 nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
 127                         }
 128                         else
 129                                 nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
 130
 131                         Int32.CheckStyle (style);
 132
 133                         bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
 134                         bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
 135                         bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
 136                         bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
 137                         bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
 138                         bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
 139                         bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
 140                         bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
 141                         bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
 142
 143                         int pos = 0;
 144
 145                         if (AllowLeadingWhite)
 146                                 pos = Int32.JumpOverWhite (pos, s, true);
 147
 148                         bool foundOpenParentheses = false;
 149                         bool negative = false;
 150                         bool foundSign = false;
 151                         bool foundCurrency = false;
 152
 153                         // Pre-number stuff
 154                         if (AllowParentheses && s [pos] == '(') {
 155                                 foundOpenParentheses = true;
 156                                 foundSign = true;
 157                                 negative = true; // MS always make the number negative when there parentheses
 158                                                  // even when NumberFormatInfo.NumberNegativePattern != 0!!!
 159                                 pos++;
 160                                 if (AllowLeadingWhite)
 161                                         pos = Int32.JumpOverWhite (pos, s, true);
 162
 163                                 if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
 164                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 165                                 if (s.Substring (pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
 166                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 167                         }
 168
 169                         if (AllowLeadingSign && !foundSign) {
 170                                 // Sign + Currency
 171                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 172                                 if (foundSign) {
 173                                         if (AllowLeadingWhite)
 174                                                 pos = Int32.JumpOverWhite (pos, s, true);
 175                                         if (AllowCurrencySymbol) {
 176                                                 Int32.FindCurrency (ref pos, s, nfi,
 177                                                                     ref foundCurrency);
 178                                                 if (foundCurrency && AllowLeadingWhite)
 179                                                         pos = Int32.JumpOverWhite (pos, s, true);
 180                                         }
 181                                 }
 182                         }
 183
 184                         if (AllowCurrencySymbol && !foundCurrency) {
 185                                 // Currency + sign
 186                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 187                                 if (foundCurrency) {
 188                                         if (AllowLeadingWhite)
 189                                                 pos = Int32.JumpOverWhite (pos, s, true);
 190                                         if (foundCurrency) {
 191                                                 if (!foundSign && AllowLeadingSign) {
 192                                                         Int32.FindSign (ref pos, s, nfi, ref foundSign,
 193                                                                         ref negative);
 194                                                         if (foundSign && AllowLeadingWhite)
 195                                                                 pos = Int32.JumpOverWhite (pos, s, true);
 196                                                 }
 197                                         }
 198                                 }
 199                         }
 200
 201                         ulong number = 0;
 202                         int nDigits = 0;
 203                         bool decimalPointFound = false;
 204                         ulong digitValue;
 205                         char hexDigit;
 206
 207                         // Number stuff
 208                         // Just the same as Int32, but this one adds instead of substract
 209                         do {
 210
 211                                 if (!Int32.ValidDigit (s [pos], AllowHexSpecifier)) {
 212                                         if (AllowThousands && Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
 213                                                 continue;
 214                                         else
 215                                                 if (!decimalPointFound && AllowDecimalPoint &&
 216                                                     Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
 217                                                         decimalPointFound = true;
 218                                                         continue;
 219                                                 }
 220                                         break;
 221                                 }
 222                                 else if (AllowHexSpecifier) {
 223                                         nDigits++;
 224                                         hexDigit = s [pos++];
 225                                         if (Char.IsDigit (hexDigit))
 226                                                 digitValue = (ulong) (hexDigit - '0');
 227                                         else if (Char.IsLower (hexDigit))
 228                                                 digitValue = (ulong) (hexDigit - 'a' + 10);
 229                                         else
 230                                                 digitValue = (ulong) (hexDigit - 'A' + 10);
 231
 232                                         number = checked (number * 16 + digitValue);
 233                                 }
 234                                 else if (decimalPointFound) {
 235                                         nDigits++;
 236                                         // Allows decimal point as long as it's only
 237                                         // followed by zeroes.
 238                                         if (s [pos++] != '0')
 239                                                 throw new OverflowException (Locale.GetText ("Value too large or too small."));
 240                                 }
 241                                 else {
 242                                         nDigits++;
 243
 244                                         try {
 245                                                 number = checked (number * 10 + (ulong) (s [pos++] - '0'));
 246                                         }
 247                                         catch (OverflowException) {
 248                                                 throw new OverflowException (Locale.GetText ("Value too large or too small."));
 249                                         }
 250                                 }
 251                         } while (pos < s.Length);
 252
 253                         // Post number stuff
 254                         if (nDigits == 0)
 255                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 256
 257                         if (AllowTrailingSign && !foundSign) {
 258                                 // Sign + Currency
 259                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 260                                 if (foundSign) {
 261                                         if (AllowTrailingWhite)
 262                                                 pos = Int32.JumpOverWhite (pos, s, true);
 263                                         if (AllowCurrencySymbol)
 264                                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 265                                 }
 266                         }
 267
 268                         if (AllowCurrencySymbol && !foundCurrency) {
 269                                 // Currency + sign
 270                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 271                                 if (foundCurrency) {
 272                                         if (AllowTrailingWhite)
 273                                                 pos = Int32.JumpOverWhite (pos, s, true);
 274                                         if (!foundSign && AllowTrailingSign)
 275                                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 276                                 }
 277                         }
 278
 279                         if (AllowTrailingWhite && pos < s.Length)
 280                                 pos = Int32.JumpOverWhite (pos, s, false);
 281
 282                         if (foundOpenParentheses) {
 283                                 if (pos >= s.Length || s [pos++] != ')')
 284                                         throw new FormatException (Locale.GetText
 285                                                 ("Input string was not in the correct format."));
 286                                 if (AllowTrailingWhite && pos < s.Length)
 287                                         pos = Int32.JumpOverWhite (pos, s, false);
 288                         }
 289
 290                         if (pos < s.Length && s [pos] != '\u0000')
 291                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 292
 293                         // -0 is legal but other negative values are not
 294                         if (negative && (number > 0)) {
 295                                 throw new OverflowException (
 296                                         Locale.GetText ("Negative number"));
 297                         }
 298
 299                         return number;
 300                 }
 301
 302                 public override string ToString ()
 303                 {
 304                         return ToString (null, null);
 305                 }
 306
 307                 public string ToString (IFormatProvider provider)
 308                 {
 309                         return ToString (null, provider);
 310                 }
 311
 312                 public string ToString (string format)
 313                 {
 314                         return ToString (format, null);
 315                 }
 316
 317                 public string ToString (string format, IFormatProvider provider)
 318                 {
 319                         NumberFormatInfo nfi = NumberFormatInfo.GetInstance (provider);
 320
 321                         // use "G" when format is null or String.Empty
 322                         if ((format == null) || (format.Length == 0))
 323                                 format = "G";
 324
 325                         return IntegerFormatter.NumberToString (format, nfi, m_value);
 326                 }
 327
 328                 // =========== IConvertible Methods =========== //
 329                 public TypeCode GetTypeCode ()
 330                 {
 331                         return TypeCode.UInt64;
 332                 }
 333
 334                 bool IConvertible.ToBoolean (IFormatProvider provider)
 335                 {
 336                         return System.Convert.ToBoolean (m_value);
 337                 }
 338
 339                 byte IConvertible.ToByte (IFormatProvider provider)
 340                 {
 341                         return System.Convert.ToByte (m_value);
 342                 }
 343
 344                 char IConvertible.ToChar (IFormatProvider provider)
 345                 {
 346                         return System.Convert.ToChar (m_value);
 347                 }
 348
 349                 DateTime IConvertible.ToDateTime (IFormatProvider provider)
 350                 {
 351                         return System.Convert.ToDateTime (m_value);
 352                 }
 353
 354                 decimal IConvertible.ToDecimal (IFormatProvider provider)
 355                 {
 356                         return System.Convert.ToDecimal (m_value);
 357                 }
 358
 359                 double IConvertible.ToDouble (IFormatProvider provider)
 360                 {
 361                         return System.Convert.ToDouble (m_value);
 362                 }
 363
 364                 short IConvertible.ToInt16 (IFormatProvider provider)
 365                 {
 366                         return System.Convert.ToInt16 (m_value);
 367                 }
 368
 369                 int IConvertible.ToInt32 (IFormatProvider provider)
 370                 {
 371                         return System.Convert.ToInt32 (m_value);
 372                 }
 373
 374                 long IConvertible.ToInt64 (IFormatProvider provider)
 375                 {
 376                         return System.Convert.ToInt64 (m_value);
 377                 }
 378
 379                 sbyte IConvertible.ToSByte(IFormatProvider provider)
 380                 {
 381                         return System.Convert.ToSByte (m_value);
 382                 }
 383
 384                 float IConvertible.ToSingle (IFormatProvider provider)
 385                 {
 386                         return System.Convert.ToSingle (m_value);
 387                 }
 388
 389                 object IConvertible.ToType (Type conversionType, IFormatProvider provider)
 390                 {
 391                         return System.Convert.ToType (m_value, conversionType, provider);
 392                 }
 393
 394                 ushort IConvertible.ToUInt16 (IFormatProvider provider)
 395                 {
 396                         return System.Convert.ToUInt16 (m_value);
 397                 }
 398
 399                 uint IConvertible.ToUInt32 (IFormatProvider provider)
 400                 {
 401                         return System.Convert.ToUInt32 (m_value);
 402                 }
 403
 404                 ulong IConvertible.ToUInt64 (IFormatProvider provider)
 405                 {
 406                         return m_value;
 407                 }
 408         }
 409 }