mcs/class/System.Data/System.Data.SqlTypes/SqlByte.cs

   1 //
   2 // System.Data.SqlTypes.SqlByte
   3 //
   4 // Author:
   5 //   Tim Coleman <tim@timcoleman.com>
   6 //   Ville Palo <vi64pa@kolumbus.fi>
   7 //
   8 // (C) Copyright 2002 Tim Coleman
   9 // (C) Copyright 2003 Ville Palo
  10 //
  11
  12 //
  13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System;
  36 using System.Globalization;
  37
  38 namespace System.Data.SqlTypes
  39 {
  40         public struct SqlByte : INullable, IComparable
  41         {
  42                 #region Fields
  43
  44                 byte value;
  45                 private bool notNull;
  46
  47                 public static readonly SqlByte MaxValue = new SqlByte (0xff);
  48                 public static readonly SqlByte MinValue = new SqlByte (0);
  49                 public static readonly SqlByte Null;
  50                 public static readonly SqlByte Zero = new SqlByte (0);
  51
  52                 #endregion
  53
  54                 #region Constructors
  55
  56                 public SqlByte (byte value)
  57                 {
  58                         this.value = value;
  59                         notNull = true;
  60                 }
  61
  62                 #endregion
  63
  64                 #region Properties
  65
  66                 public bool IsNull {
  67                         get { return !notNull; }
  68                 }
  69
  70                 public byte Value {
  71                         get {
  72                                 if (this.IsNull)
  73                                         throw new SqlNullValueException ();
  74                                 else
  75                                         return value;
  76                         }
  77                 }
  78
  79                 #endregion
  80
  81                 #region Methods
  82
  83                 public static SqlByte Add (SqlByte x, SqlByte y)
  84                 {
  85                         return (x + y);
  86                 }
  87
  88                 public static SqlByte BitwiseAnd (SqlByte x, SqlByte y)
  89                 {
  90                         return (x & y);
  91                 }
  92
  93                 public static SqlByte BitwiseOr (SqlByte x, SqlByte y)
  94                 {
  95                         return (x | y);
  96                 }
  97
  98                 public int CompareTo (object value)
  99                 {
 100                         if (value == null)
 101                                 return 1;
 102                         else if (!(value is SqlByte))
 103                                 throw new ArgumentException (Locale.GetText ("Value is not a System.Data.SqlTypes.SqlByte"));
 104                         else if (((SqlByte)value).IsNull)
 105                                 return 1;
 106                         else
 107                                 return this.value.CompareTo (((SqlByte)value).Value);
 108                 }
 109
 110                 public static SqlByte Divide (SqlByte x, SqlByte y)
 111                 {
 112                         return (x / y);
 113                 }
 114
 115                 public override bool Equals (object value)
 116                 {
 117                         if (!(value is SqlByte))
 118                                 return false;
 119                         else if (this.IsNull && ((SqlByte)value).IsNull)
 120                                  return true;
 121                         else if (((SqlByte)value).IsNull)
 122                                 return false;
 123                         else
 124                                 return (bool) (this == (SqlByte)value);
 125                 }
 126
 127                 public static SqlBoolean Equals (SqlByte x, SqlByte y)
 128                 {
 129                         return (x == y);
 130                 }
 131
 132                 public override int GetHashCode ()
 133                 {
 134                         return (int)value;
 135                 }
 136
 137                 public static SqlBoolean GreaterThan (SqlByte x, SqlByte y)
 138                 {
 139                         return (x > y);
 140                 }
 141
 142                 public static SqlBoolean GreaterThanOrEqual (SqlByte x, SqlByte y)
 143                 {
 144                         return (x >= y);
 145                 }
 146
 147                 public static SqlBoolean LessThan (SqlByte x, SqlByte y)
 148                 {
 149                         return (x < y);
 150                 }
 151
 152                 public static SqlBoolean LessThanOrEqual (SqlByte x, SqlByte y)
 153                 {
 154                         return (x <= y);
 155                 }
 156
 157                 public static SqlByte Mod (SqlByte x, SqlByte y)
 158                 {
 159                         return (x % y);
 160                 }
 161
 162                 public static SqlByte Multiply (SqlByte x, SqlByte y)
 163                 {
 164                         return (x * y);
 165                 }
 166
 167                 public static SqlBoolean NotEquals (SqlByte x, SqlByte y)
 168                 {
 169                         return (x != y);
 170                 }
 171
 172                 public static SqlByte OnesComplement (SqlByte x)
 173                 {
 174                         return ~x;
 175                 }
 176
 177                 public static SqlByte Parse (string s)
 178                 {
 179                         checked {
 180                                 return new SqlByte (Byte.Parse (s));
 181                         }
 182                 }
 183
 184                 public static SqlByte Subtract (SqlByte x, SqlByte y)
 185                 {
 186                         return (x - y);
 187                 }
 188
 189                 public SqlBoolean ToSqlBoolean ()
 190                 {
 191                         return ((SqlBoolean)this);
 192                 }
 193
 194                 public SqlDecimal ToSqlDecimal ()
 195                 {
 196                         return ((SqlDecimal)this);
 197                 }
 198
 199                 public SqlDouble ToSqlDouble ()
 200                 {
 201                         return ((SqlDouble)this);
 202                 }
 203
 204                 public SqlInt16 ToSqlInt16 ()
 205                 {
 206                         return ((SqlInt16)this);
 207                 }
 208
 209                 public SqlInt32 ToSqlInt32 ()
 210                 {
 211                         return ((SqlInt32)this);
 212                 }
 213
 214                 public SqlInt64 ToSqlInt64 ()
 215                 {
 216                         return ((SqlInt64)this);
 217                 }
 218
 219                 public SqlMoney ToSqlMoney ()
 220                 {
 221                         return ((SqlMoney)this);
 222                 }
 223
 224                 public SqlSingle ToSqlSingle ()
 225                 {
 226                         return ((SqlSingle)this);
 227                 }
 228
 229                 public SqlString ToSqlString ()
 230                 {
 231                         return ((SqlString)this);
 232                 }
 233
 234                 public override string ToString ()
 235                 {
 236                         if (this.IsNull)
 237                                 return "Null";
 238                         else
 239                                 return value.ToString ();
 240                 }
 241
 242                 public static SqlByte Xor (SqlByte x, SqlByte y)
 243                 {
 244                         return (x ^ y);
 245                 }
 246
 247                 public static SqlByte operator + (SqlByte x, SqlByte y)
 248                 {
 249                         checked {
 250                                 return new SqlByte ((byte) (x.Value + y.Value));
 251                         }
 252                 }
 253
 254                 public static SqlByte operator & (SqlByte x, SqlByte y)
 255                 {
 256                         return new SqlByte ((byte) (x.Value & y.Value));
 257                 }
 258
 259                 public static SqlByte operator | (SqlByte x, SqlByte y)
 260                 {
 261                         return new SqlByte ((byte) (x.Value | y.Value));
 262                 }
 263
 264                 public static SqlByte operator / (SqlByte x, SqlByte y)
 265                 {
 266                         checked {
 267                                 return new SqlByte ((byte) (x.Value / y.Value));
 268                         }
 269                 }
 270
 271                 public static SqlBoolean operator == (SqlByte x, SqlByte y)
 272                 {
 273                         if (x.IsNull || y.IsNull)
 274                                 return SqlBoolean.Null;
 275                         else
 276                                 return new SqlBoolean (x.Value == y.Value);
 277                 }
 278
 279                 public static SqlByte operator ^ (SqlByte x, SqlByte y)
 280                 {
 281                         return new SqlByte ((byte) (x.Value ^ y.Value));
 282                 }
 283
 284                 public static SqlBoolean operator > (SqlByte x, SqlByte y)
 285                 {
 286                         if (x.IsNull || y.IsNull)
 287                                 return SqlBoolean.Null;
 288                         else
 289                                 return new SqlBoolean (x.Value > y.Value);
 290                 }
 291
 292                 public static SqlBoolean operator >= (SqlByte x, SqlByte y)
 293                 {
 294                         if (x.IsNull || y.IsNull)
 295                                 return SqlBoolean.Null;
 296                         else
 297                                 return new SqlBoolean (x.Value >= y.Value);
 298                 }
 299
 300                 public static SqlBoolean operator != (SqlByte x, SqlByte y)
 301                 {
 302                         if (x.IsNull || y.IsNull)
 303                                 return SqlBoolean.Null;
 304                         else
 305                                 return new SqlBoolean (!(x.Value == y.Value));
 306                 }
 307
 308                 public static SqlBoolean operator < (SqlByte x, SqlByte y)
 309                 {
 310                         if (x.IsNull || y.IsNull)
 311                                 return SqlBoolean.Null;
 312                         else
 313                                 return new SqlBoolean (x.Value < y.Value);
 314                 }
 315
 316                 public static SqlBoolean operator <= (SqlByte x, SqlByte y)
 317                 {
 318                         if (x.IsNull || y.IsNull)
 319                                 return SqlBoolean.Null;
 320                         else
 321                                 return new SqlBoolean (x.Value <= y.Value);
 322                 }
 323
 324                 public static SqlByte operator % (SqlByte x, SqlByte y)
 325                 {
 326                         return new SqlByte ((byte) (x.Value % y.Value));
 327                 }
 328
 329                 public static SqlByte operator * (SqlByte x, SqlByte y)
 330                 {
 331                         checked {
 332                                 return new SqlByte ((byte) (x.Value * y.Value));
 333                         }
 334                 }
 335
 336                 public static SqlByte operator ~ (SqlByte x)
 337                 {
 338                         return new SqlByte ((byte) ~x.Value);
 339                 }
 340
 341                 public static SqlByte operator - (SqlByte x, SqlByte y)
 342                 {
 343                         checked {
 344                                 return new SqlByte ((byte) (x.Value - y.Value));
 345                         }
 346                 }
 347
 348                 public static explicit operator SqlByte (SqlBoolean x)
 349                 {
 350                         if (x.IsNull)
 351                                 return Null;
 352                         else
 353                                 return new SqlByte (x.ByteValue);
 354                 }
 355
 356                 public static explicit operator byte (SqlByte x)
 357                 {
 358                         return x.Value;
 359                 }
 360
 361                 public static explicit operator SqlByte (SqlDecimal x)
 362                 {
 363                         checked {
 364                                 if (x.IsNull)
 365                                         return Null;
 366                                 else
 367                                         return new SqlByte ((byte)x.Value);
 368                         }
 369                 }
 370
 371                 public static explicit operator SqlByte (SqlDouble x)
 372                 {
 373                         if (x.IsNull)
 374                                 return Null;
 375                         else {
 376                                 checked {
 377                                         return new SqlByte ((byte)x.Value);
 378                                 }
 379                         }
 380                 }
 381
 382                 public static explicit operator SqlByte (SqlInt16 x)
 383                 {
 384                         checked {
 385                                 if (x.IsNull)
 386                                         return Null;
 387                                 else
 388                                         return new SqlByte ((byte)x.Value);
 389                         }
 390                 }
 391
 392                 public static explicit operator SqlByte (SqlInt32 x)
 393                 {
 394                         checked {
 395                                 if (x.IsNull)
 396                                         return Null;
 397                                 else
 398                                         return new SqlByte ((byte)x.Value);
 399                         }
 400                 }
 401
 402                 public static explicit operator SqlByte (SqlInt64 x)
 403                 {
 404                         if (x.IsNull)
 405                                 return Null;
 406                         else {
 407                                 checked {
 408                                         return new SqlByte ((byte)x.Value);
 409                                 }
 410                         }
 411                 }
 412
 413                 public static explicit operator SqlByte (SqlMoney x)
 414                 {
 415                         checked {
 416                                 if (x.IsNull)
 417                                         return Null;
 418                                 else
 419                                         return new SqlByte ((byte)x.Value);
 420                         }
 421                 }
 422
 423                 public static explicit operator SqlByte (SqlSingle x)
 424                 {
 425                         if (x.IsNull)
 426                                 return Null;
 427                         else {
 428                                 checked {
 429                                         return new SqlByte ((byte)x.Value);
 430                                 }
 431                         }
 432                 }
 433
 434
 435                 public static explicit operator SqlByte (SqlString x)
 436                 {
 437                         checked {
 438                                 return SqlByte.Parse (x.Value);
 439                         }
 440                 }
 441
 442                 public static implicit operator SqlByte (byte x)
 443                 {
 444                         return new SqlByte (x);
 445                 }
 446
 447                 #endregion
 448         }
 449 }
 450