mcs/class/corlib/System/UInt32.cs

   1 //
   2 // System.UInt32.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 (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 UInt32 : IComparable, IFormattable, IConvertible
  38         {
  39                 public const uint MaxValue = 0xffffffff;
  40                 public const uint MinValue = 0;
  41
  42                 internal uint m_value;
  43
  44                 public int CompareTo (object value)
  45                 {
  46                         if (value == null)
  47                                 return 1;
  48
  49                         if (!(value is System.UInt32))
  50                                 throw new ArgumentException (Locale.GetText ("Value is not a System.UInt32."));
  51
  52                         if (this.m_value == (uint) value)
  53                                 return 0;
  54
  55                         if (this.m_value < (uint) value)
  56                                 return -1;
  57
  58                         return 1;
  59                 }
  60
  61                 public override bool Equals (object obj)
  62                 {
  63                         if (!(obj is System.UInt32))
  64                                 return false;
  65
  66                         return ((uint) obj) == m_value;
  67                 }
  68
  69                 public override int GetHashCode ()
  70                 {
  71                         return (int) m_value;
  72                 }
  73
  74                 [CLSCompliant (false)]
  75                 public static uint Parse (string s)
  76                 {
  77                         uint val = 0;
  78                         int len;
  79                         int i;
  80                         bool digits_seen = false;
  81                         bool has_negative_sign = false;
  82
  83                         if (s == null)
  84                                 throw new ArgumentNullException ("s");
  85
  86                         len = s.Length;
  87
  88                         char c;
  89                         for (i = 0; i < len; i++) {
  90                                 c = s [i];
  91                                 if (!Char.IsWhiteSpace (c))
  92                                         break;
  93                         }
  94
  95                         if (i == len)
  96                                 throw new FormatException ();
  97
  98                         if (s [i] == '+')
  99                                 i++;
 100                         else
 101                                 if (s[i] == '-') {
 102                                         i++;
 103                                         has_negative_sign = true;
 104                                 }
 105
 106                         for (; i < len; i++) {
 107                                 c = s [i];
 108
 109                                 if (c >= '0' && c <= '9') {
 110                                         uint d = (uint) (c - '0');
 111
 112                                         val = checked (val * 10 + d);
 113                                         digits_seen = true;
 114                                 }
 115                                 else {
 116                                         if (Char.IsWhiteSpace (c)) {
 117                                                 for (i++; i < len; i++) {
 118                                                         if (!Char.IsWhiteSpace (s [i]))
 119                                                                 throw new FormatException ();
 120                                                 }
 121                                                 break;
 122                                         } else
 123                                                 throw new FormatException ();
 124                                 }
 125                         }
 126                         if (!digits_seen)
 127                                 throw new FormatException ();
 128
 129                         // -0 is legal but other negative values are not
 130                         if (has_negative_sign && (val > 0)) {
 131                                 throw new OverflowException (
 132                                         Locale.GetText ("Negative number"));
 133                         }
 134
 135                         return val;
 136                 }
 137
 138                 [CLSCompliant (false)]
 139                 public static uint Parse (string s, IFormatProvider provider)
 140                 {
 141                         return Parse (s, NumberStyles.Integer, provider);
 142                 }
 143
 144                 [CLSCompliant (false)]
 145                 public static uint Parse (string s, NumberStyles style)
 146                 {
 147                         return Parse (s, style, null);
 148                 }
 149
 150                 [CLSCompliant (false)]
 151                 public static uint Parse (string s, NumberStyles style, IFormatProvider provider)
 152                 {
 153                         if (s == null)
 154                                 throw new ArgumentNullException ("s");
 155
 156                         if (s.Length == 0)
 157                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 158
 159                         NumberFormatInfo nfi;
 160                         if (provider != null) {
 161                                 Type typeNFI = typeof (NumberFormatInfo);
 162                                 nfi = (NumberFormatInfo) provider.GetFormat (typeNFI);
 163                         }
 164                         else
 165                                 nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
 166
 167                         Int32.CheckStyle (style);
 168
 169                         bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
 170                         bool AllowExponent = (style & NumberStyles.AllowExponent) != 0;
 171                         bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
 172                         bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
 173                         bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
 174                         bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
 175                         bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
 176                         bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
 177                         bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
 178                         bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
 179
 180                         int pos = 0;
 181
 182                         if (AllowLeadingWhite)
 183                                 pos = Int32.JumpOverWhite (pos, s, true);
 184
 185                         bool foundOpenParentheses = false;
 186                         bool negative = false;
 187                         bool foundSign = false;
 188                         bool foundCurrency = false;
 189
 190                         // Pre-number stuff
 191                         if (AllowParentheses && s [pos] == '(') {
 192                                 foundOpenParentheses = true;
 193                                 foundSign = true;
 194                                 negative = true; // MS always make the number negative when there parentheses
 195                                                  // even when NumberFormatInfo.NumberNegativePattern != 0!!!
 196                                 pos++;
 197                                 if (AllowLeadingWhite)
 198                                         pos = Int32.JumpOverWhite (pos, s, true);
 199
 200                                 if (s.Substring (pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
 201                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 202                                 if (s.Substring (pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
 203                                         throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 204                         }
 205
 206                         if (AllowLeadingSign && !foundSign) {
 207                                 // Sign + Currency
 208                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 209                                 if (foundSign) {
 210                                         if (AllowLeadingWhite)
 211                                                 pos = Int32.JumpOverWhite (pos, s, true);
 212                                         if (AllowCurrencySymbol) {
 213                                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 214                                                 if (foundCurrency && AllowLeadingWhite)
 215                                                         pos = Int32.JumpOverWhite (pos, s, true);
 216                                         }
 217                                 }
 218                         }
 219
 220                         if (AllowCurrencySymbol && !foundCurrency) {
 221                                 // Currency + sign
 222                                 Int32.FindCurrency (ref pos, s, nfi, ref foundCurrency);
 223                                 if (foundCurrency) {
 224                                         if (AllowLeadingWhite)
 225                                                 pos = Int32.JumpOverWhite (pos, s, true);
 226                                         if (foundCurrency) {
 227                                                 if (!foundSign && AllowLeadingSign) {
 228                                                         Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 229                                                         if (foundSign && AllowLeadingWhite)
 230                                                                 pos = Int32.JumpOverWhite (pos, s, true);
 231                                                 }
 232                                         }
 233                                 }
 234                         }
 235
 236                         uint number = 0;
 237                         int nDigits = 0;
 238                         bool decimalPointFound = false;
 239                         uint digitValue;
 240                         char hexDigit;
 241
 242                         // Number stuff
 243                         // Just the same as Int32, but this one adds instead of substract
 244                         do {
 245
 246                                 if (!Int32.ValidDigit (s [pos], AllowHexSpecifier)) {
 247                                         if (AllowThousands && Int32.FindOther (ref pos, s, nfi.NumberGroupSeparator))
 248                                                 continue;
 249                                         else
 250                                                 if (!decimalPointFound && AllowDecimalPoint &&
 251                                                     Int32.FindOther (ref pos, s, nfi.NumberDecimalSeparator)) {
 252                                                         decimalPointFound = true;
 253                                                         continue;
 254                                                 }
 255                                         break;
 256                                 }
 257                                 else if (AllowHexSpecifier) {
 258                                         nDigits++;
 259                                         hexDigit = s [pos++];
 260                                         if (Char.IsDigit (hexDigit))
 261                                                 digitValue = (uint) (hexDigit - '0');
 262                                         else if (Char.IsLower (hexDigit))
 263                                                 digitValue = (uint) (hexDigit - 'a' + 10);
 264                                         else
 265                                                 digitValue = (uint) (hexDigit - 'A' + 10);
 266
 267                                         number = checked (number * 16 + digitValue);
 268                                 }
 269                                 else if (decimalPointFound) {
 270                                         nDigits++;
 271                                         // Allows decimal point as long as it's only
 272                                         // followed by zeroes.
 273                                         if (s [pos++] != '0')
 274                                                 throw new OverflowException (Locale.GetText ("Value too large or too small."));
 275                                 }
 276                                 else {
 277                                         nDigits++;
 278
 279                                         try {
 280                                                 number = checked (number * 10 + (uint) (s [pos++] - '0'));
 281                                         }
 282                                         catch (OverflowException) {
 283                                                 throw new OverflowException (Locale.GetText ("Value too large or too small."));
 284                                         }
 285                                 }
 286                         } while (pos < s.Length);
 287
 288                         // Post number stuff
 289                         if (nDigits == 0)
 290                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 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)
 297                                                 pos = Int32.JumpOverWhite (pos, s, true);
 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)
 308                                                 pos = Int32.JumpOverWhite (pos, s, true);
 309                                         if (!foundSign && AllowTrailingSign)
 310                                                 Int32.FindSign (ref pos, s, nfi, ref foundSign, ref negative);
 311                                 }
 312                         }
 313
 314                         if (AllowTrailingWhite && pos < s.Length)
 315                                 pos = Int32.JumpOverWhite (pos, s, false);
 316
 317                         if (foundOpenParentheses) {
 318                                 if (pos >= s.Length || s [pos++] != ')')
 319                                         throw new FormatException (Locale.GetText
 320                                                 ("Input string was not in the correct format."));
 321                                 if (AllowTrailingWhite && pos < s.Length)
 322                                         pos = Int32.JumpOverWhite (pos, s, false);
 323                         }
 324
 325                         if (pos < s.Length && s [pos] != '\u0000')
 326                                 throw new FormatException (Locale.GetText ("Input string was not in the correct format."));
 327
 328                         // -0 is legal but other negative values are not
 329                         if (negative && (number > 0)) {
 330                                 throw new OverflowException (
 331                                         Locale.GetText ("Negative number"));
 332                         }
 333
 334                         return number;
 335                 }
 336
 337                 public override string ToString ()
 338                 {
 339                         return ToString (null, null);
 340                 }
 341
 342                 public string ToString (IFormatProvider fp)
 343                 {
 344                         return ToString (null, fp);
 345                 }
 346
 347                 public string ToString (string format)
 348                 {
 349                         return ToString (format, null);
 350                 }
 351
 352                 public string ToString (string format, IFormatProvider fp)
 353                 {
 354                         NumberFormatInfo nfi = NumberFormatInfo.GetInstance (fp);
 355
 356                         // use "G" when format is null or String.Empty
 357                         if ((format == null) || (format.Length == 0))
 358                                 format = "G";
 359
 360                         return IntegerFormatter.NumberToString (format, nfi, m_value);
 361                 }
 362
 363                 // =========== IConvertible Methods =========== //
 364                 public TypeCode GetTypeCode ()
 365                 {
 366                         return TypeCode.UInt32;
 367                 }
 368
 369                 bool IConvertible.ToBoolean (IFormatProvider provider)
 370                 {
 371                         return System.Convert.ToBoolean (m_value);
 372                 }
 373
 374                 byte IConvertible.ToByte (IFormatProvider provider)
 375                 {
 376                         return System.Convert.ToByte (m_value);
 377                 }
 378
 379                 char IConvertible.ToChar (IFormatProvider provider)
 380                 {
 381                         return System.Convert.ToChar (m_value);
 382                 }
 383
 384                 DateTime IConvertible.ToDateTime (IFormatProvider provider)
 385                 {
 386                         return System.Convert.ToDateTime (m_value);
 387                 }
 388
 389                 decimal IConvertible.ToDecimal (IFormatProvider provider)
 390                 {
 391                         return System.Convert.ToDecimal (m_value);
 392                 }
 393
 394                 double IConvertible.ToDouble (IFormatProvider provider)
 395                 {
 396                         return System.Convert.ToDouble (m_value);
 397                 }
 398
 399                 short IConvertible.ToInt16 (IFormatProvider provider)
 400                 {
 401                         return System.Convert.ToInt16 (m_value);
 402                 }
 403
 404                 int IConvertible.ToInt32 (IFormatProvider provider)
 405                 {
 406                         return System.Convert.ToInt32 (m_value);
 407                 }
 408
 409                 long IConvertible.ToInt64 (IFormatProvider provider)
 410                 {
 411                         return System.Convert.ToInt64 (m_value);
 412                 }
 413
 414                 sbyte IConvertible.ToSByte (IFormatProvider provider)
 415                 {
 416                         return System.Convert.ToSByte (m_value);
 417                 }
 418
 419                 float IConvertible.ToSingle (IFormatProvider provider)
 420                 {
 421                         return System.Convert.ToSingle (m_value);
 422                 }
 423
 424                 object IConvertible.ToType (Type conversionType, IFormatProvider provider)
 425                 {
 426                         return System.Convert.ToType (m_value, conversionType, provider);
 427                 }
 428
 429                 ushort IConvertible.ToUInt16 (IFormatProvider provider)
 430                 {
 431                         return System.Convert.ToUInt16 (m_value);
 432                 }
 433
 434                 uint IConvertible.ToUInt32 (IFormatProvider provider)
 435                 {
 436                         return m_value;
 437                 }
 438
 439                 ulong IConvertible.ToUInt64 (IFormatProvider provider)
 440                 {
 441                         return System.Convert.ToUInt64 (m_value);
 442                 }
 443         }
 444 }