mcs/class/Microsoft.VisualBasic/Microsoft.VisualBasic/Information.cs

   1 //
   2 // Information.cs
   3 //
   4 // Author:
   5 //   Chris J Breisch (cjbreisch@altavista.net)
   6 //   Francesco Delfino (pluto@tipic.com)
   7 //   Rafael Teixeira (rafaelteixeirabr@hotmail.com)
   8 //
   9 // (C) 2002 Chris J Breisch
  10 //     2003 Tipic, Inc. (http://www.tipic.com)
  11 //     2004 Rafael Teixeira
  12 //
  13
  14 //
  15 // Copyright (c) 2002-2003 Mainsoft Corporation.
  16 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  17 //
  18 // Permission is hereby granted, free of charge, to any person obtaining
  19 // a copy of this software and associated documentation files (the
  20 // "Software"), to deal in the Software without restriction, including
  21 // without limitation the rights to use, copy, modify, merge, publish,
  22 // distribute, sublicense, and/or sell copies of the Software, and to
  23 // permit persons to whom the Software is furnished to do so, subject to
  24 // the following conditions:
  25 //
  26 // The above copyright notice and this permission notice shall be
  27 // included in all copies or substantial portions of the Software.
  28 //
  29 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  30 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  31 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  32 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  33 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  34 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  35 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  36 //
  37
  38 using System;
  39 using System.Runtime.InteropServices;
  40 using System.Globalization;
  41 using Microsoft.VisualBasic.CompilerServices;
  42
  43 namespace Microsoft.VisualBasic
  44 {
  45         [StandardModule]
  46         sealed public class Information {
  47
  48                 private Information ()
  49                 {
  50                         //Nothing to do here...
  51                 }
  52
  53                 private static int [] QBColorTable = { 0, 8388608, 32768, 8421376,
  54                                                        128, 8388736, 32896, 12632256,
  55                                                        8421504, 16711680, 65280, 16776960,
  56                                                        255, 16711935, 65535, 16777215 };
  57
  58
  59
  60                 public static System.Boolean IsArray (Object VarName)
  61                 {
  62                         if(VarName == null)
  63                                 return false;
  64                         else
  65                                 return VarName is Array;
  66                 }
  67
  68                 public static System.Boolean IsError (Object Expression)
  69                 {
  70                         if(Expression == null )
  71                                 return false;
  72                         else
  73                                 return Expression is Exception;
  74                 }
  75
  76                 public static System.Boolean IsReference (Object Expression)
  77                 {
  78                         return (false == Expression is ValueType);
  79                 }
  80
  81
  82
  83                 public static System.Boolean IsDate (System.Object Expression)
  84                 {
  85                         if(Expression == null)
  86                                 return false;
  87                         else if(Expression is DateTime)
  88                                 return true;
  89                         else if(Expression is String) {
  90                                 try {
  91                                         DateTime.Parse((String) Expression);
  92                                 }
  93                                 catch (Exception e) {
  94                                         return false;
  95                                 }
  96
  97                                 return true;
  98                         }
  99                         else
 100                                 return false;
 101                 }
 102
 103
 104                 public static System.Boolean IsDBNull (System.Object Expression)
 105                 {
 106                         if(Expression == null)
 107                                 return false;
 108                         else
 109                                 return Expression is DBNull;
 110                 }
 111
 112                 public static System.Boolean IsNothing (System.Object Expression)
 113                 {
 114                         return (Expression == null);
 115                 }
 116
 117                 public static System.Int32 RGB (int Red, int Green, int Blue)
 118                 {
 119                         if(Red < 0)
 120                                 throw new ArgumentException(Utils.GetResourceString("Argument_InvalidValue1", "Red"));
 121                         if(Green < 0)
 122                                 throw new ArgumentException(Utils.GetResourceString("Argument_InvalidValue1", "Green"));
 123                         if(Blue < 0)
 124                                 throw new ArgumentException(Utils.GetResourceString("Argument_InvalidValue1", "Blue"));
 125
 126                         if(Red > 255)
 127                                 Red = 255;
 128                         if(Green > 255)
 129                                 Green = 255;
 130                         if(Blue > 255)
 131                                 Blue = 255;
 132
 133                         return (((Red & 0xFF) << 16) | ((Green & 0xFF) << 8) | ((Blue & 0xFF) << 0));
 134                 }
 135
 136
 137
 138
 139                 public static System.Boolean IsNumeric (System.Object Expression)
 140                 {
 141
 142                         if(Expression == null || Expression is DateTime)
 143                                 return false;
 144
 145                         if(Expression is Int16 || Expression is Int32 || Expression is Int64 || Expression is Decimal ||
 146                             Expression is Single || Expression is Double || Expression is Boolean)
 147                                 return true;
 148
 149
 150
 151                         try {
 152                                 if(Expression is string)
 153                                         Double.Parse(Expression as string);
 154                                 else
 155                                         Double.Parse(Expression.ToString());
 156                                 return true;
 157                         } catch {} // just dismiss errors but return false
 158
 159                         return false;
 160                 }
 161
 162                 public static System.Int32 QBColor (System.Int32 Color)
 163                 {
 164                         if(Color < 0 || Color > 15)
 165                                 throw new ArgumentException(
 166                                                             Utils.GetResourceString("Argument_InvalidValue1", "Color"));
 167                         return QBColorTable[Color];
 168                 }
 169
 170                 public static String VbTypeName(String UrtName)
 171                 {
 172
 173                         if(UrtName == null)
 174                                 return null;
 175
 176                         String tmpName = UrtName.Trim().ToLower(CultureInfo.InvariantCulture);
 177
 178                         if(tmpName.StartsWith("system."))
 179                                 tmpName = tmpName.Substring(7);
 180
 181                         if(tmpName.Equals("object"))
 182                                 return "Object";
 183                         if(tmpName.Equals("int16"))
 184                                 return "Short";
 185                         if(tmpName.Equals("clrint16"))
 186                                 return "Short";
 187                         if(tmpName.Equals("int32"))
 188                                 return "Integer";
 189                         if(tmpName.Equals("clrint32"))
 190                                 return "Integer";
 191                         if(tmpName.Equals("int64"))
 192                                 return "Long";
 193                         if(tmpName.Equals("clrint64"))
 194                                 return "Long";
 195                         if(tmpName.Equals("clrsingle"))
 196                                 return "Single";
 197                         if(tmpName.Equals("single"))
 198                                 return "Single";
 199                         if(tmpName.Equals("double"))
 200                                 return "Double";
 201                         if(tmpName.Equals("clrdouble"))
 202                                 return "Double";
 203                         if(tmpName.Equals("boolean"))
 204                                 return "Boolean";
 205                         if(tmpName.Equals("clrboolean"))
 206                                 return "Boolean";
 207                         if(tmpName.Equals("char"))
 208                                 return "Char";
 209                         if(tmpName.Equals("clrchar"))
 210                                 return "char";
 211                         if(tmpName.Equals("string"))
 212                                 return "String";
 213                         if(tmpName.Equals("java.lang.string"))
 214                                 return "String";
 215                         if(tmpName.Equals("byte"))
 216                                 return "Byte";
 217                         if(tmpName.Equals("clrbyte"))
 218                                 return "Byte";
 219                         if(tmpName.Equals("decimal"))
 220                                 return "Decimal";
 221                         if(tmpName.Equals("datetime"))
 222                                 return "Date";
 223
 224                         return null;
 225                 }
 226
 227                 internal static String TypeNameOfCOMObject (Object obj, Boolean flag)
 228                 {
 229                         throw new NotImplementedException("Method Microsoft.VisualBasic.Information.TypeNameOfCOMObject() is not supported");
 230                 }
 231
 232                 public static System.Int32 UBound (System.Array Array,
 233                                                    [Optional, __DefaultArgumentValue(1)]
 234                                                    System.Int32 Rank)
 235                 {
 236                         Exception e;
 237
 238                         if(Array == null) {
 239                                 e =  new ArgumentNullException(Utils.GetResourceString("Argument_InvalidNullValue1", "Array"));
 240                                 throw (ArgumentNullException) ExceptionUtils.VbMakeException(e, 9);
 241                         }
 242
 243                         e = ExceptionUtils.VbMakeException((Exception) new ArgumentNullException(VBUtils.GetResourceString(9)), 9);
 244
 245                         if(!IsArray(Array))
 246                         {
 247                                 throw new ArgumentException("Not array arrived to UBound method of Information class");
 248                         }
 249
 250                         if(Rank < 1 || Rank > Array.Rank)
 251                                 throw new RankException(Utils.GetResourceString("Argument_InvalidRank1", "Rank"));
 252
 253                         return Array.GetUpperBound(Rank-1);
 254                 }
 255
 256                 public static System.Int32 LBound (System.Array Array,
 257                                                    [Optional, __DefaultArgumentValue(1)]
 258                                                    System.Int32 Rank)
 259                 {
 260                         Exception e;
 261
 262                         if(Array == null) {
 263                                 e = new ArgumentNullException(Utils.GetResourceString("Argument_InvalidNullValue1", "Array"));
 264                                 throw (ArgumentNullException)ExceptionUtils.VbMakeException(e, 9);
 265                         }
 266
 267                         if(!IsArray(Array)) {
 268                                 throw new ArgumentException("Not array arrived to LBound method of Information class");
 269                         }
 270
 271                         if(Rank < 1 || Rank > Array.Rank)
 272                                 throw new RankException(Utils.GetResourceString("Argument_InvalidRank1", "Rank"));
 273
 274                         return Array.GetLowerBound(Rank-1);
 275                 }
 276
 277                 public static Microsoft.VisualBasic.ErrObject Err()
 278                 {
 279                         return ProjectData.Err;
 280                 }
 281
 282                 [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
 283                 public static System.Int32 Erl ()
 284                 {
 285                         return ProjectData.Err.Erl;
 286                 }
 287
 288                 public static System.String TypeName (System.Object VarName)
 289                 {
 290                         String name;
 291                         Boolean isArray = false;
 292
 293                         if(VarName == null)
 294                                 return "Nothing";
 295
 296                         Type type = VarName.GetType();
 297                         if(type.IsArray) {
 298                                 isArray = true;
 299                                 type = type.GetElementType();
 300                         }
 301                         if(type.IsEnum)
 302                                 name = type.Name;
 303                         else {
 304                                 switch(Type.GetTypeCode(type)) {
 305                                 case TypeCode.DBNull:
 306                                         name = "DBNull";
 307                                         break;
 308                                 case TypeCode.Boolean:
 309                                         name = "Boolean";
 310                                         break;
 311                                 case TypeCode.Char:
 312                                         name = "Char";
 313                                         break;
 314                                 case TypeCode.Byte:
 315                                         name = "Byte";
 316                                         break;
 317                                 case TypeCode.Int16:
 318                                         name = "Short";
 319                                         break;
 320                                 case TypeCode.Int32:
 321                                         name = "Integer";
 322                                         break;
 323                                 case TypeCode.Int64:
 324                                         name = "Long";
 325                                         break;
 326                                 case TypeCode.Single:
 327                                         name = "Single";
 328                                         break;
 329                                 case TypeCode.Double:
 330                                         name = "Double";
 331                                         break;
 332                                 case TypeCode.Decimal:
 333                                         name = "Decimal";
 334                                         break;
 335                                 case TypeCode.DateTime:
 336                                         name = "Date";
 337                                         break;
 338                                 case TypeCode.String:
 339                                         name = "String";
 340                                         break;
 341                                 default :
 342                                         name = type.Name;
 343                                         break;
 344                                 }
 345
 346                                 // the following is commented even with mainsoft
 347
 348                                 // if(type.get_IsCOMObject() && name.equals("__ComObject"))
 349                                 // {
 350                                 //      throw new NotImplementedException("COM Objects unsupported in TypeName of Information");
 351                                 // }
 352                         }
 353                         int index = name.IndexOf('+');
 354                         if(index >= 0)
 355                                 name = name.Substring(index + 1);
 356
 357                         if(isArray == true) {
 358                                 int rank = (VarName as Array).Rank;
 359                                 if(rank == 1)
 360                                         name = name + "[]";
 361                                 else {
 362                                         name = name + "[";
 363                                         for (int i = 0; i < rank - 1; i++)
 364                                                 name += ',';
 365                                         name = name + "]";
 366                                 }
 367                                 name = Utils.VBFriendlyNameOfTypeName(name);
 368                         }
 369                         return name;
 370                 }
 371
 372                 public static System.String SystemTypeName (System.String VbName)
 373                 {
 374                         String tmpStr = VbName.Trim().ToLower(CultureInfo.InvariantCulture);
 375                         if(tmpStr.Equals("object"))
 376                                 return "System.Object";
 377                         if(tmpStr.Equals("short"))
 378                                 return "System.Int16";
 379                         if(tmpStr.Equals("integer"))
 380                                 return "System.Int32";
 381                         if(tmpStr.Equals("single"))
 382                                 return "System.Single";
 383                         if(tmpStr.Equals("double"))
 384                                 return "System.Double";
 385                         if(tmpStr.Equals("date"))
 386                                 return "System.DateTime";
 387                         if(tmpStr.Equals("string"))
 388                                 return "System.String";
 389                         if(tmpStr.Equals("boolean"))
 390                                 return "System.Boolean";
 391                         if(tmpStr.Equals("decimal"))
 392                                 return "System.Decimal";
 393                         if(tmpStr.Equals("byte"))
 394                                 return "System.Byte";
 395                         if(tmpStr.Equals("char"))
 396                                 return "System.Char";
 397                         if(tmpStr.Equals("long"))
 398                                 return "System.Int64";
 399
 400                         return null;
 401                 }
 402
 403                 [MonoTODO]
 404                 public static VariantType VarType(Object VarName)
 405                 {
 406                         if(VarName == null)
 407                                 return VariantType.Object;
 408
 409                         if(VarName is Exception)
 410                                 return VariantType.Error;
 411
 412                         return varType(VarName.GetType());
 413                 }
 414
 415                 private static VariantType varType(Type varType)
 416                 {
 417                         if(varType == null)
 418                                 return VariantType.Object;
 419
 420                         if(varType.IsArray) {
 421
 422                                 Type type = varType.GetElementType();
 423                                 if(type.IsArray)
 424                                         return VariantType.ObjectArray;
 425
 426                                 int elemVal = (int) Information.varType(type);
 427                                 return (VariantType)((int)VariantType.Array | elemVal);
 428                         }
 429
 430                         if(varType.IsEnum)
 431                                 varType = Enum.GetUnderlyingType(varType);
 432
 433                         if(varType == null)
 434                                 return VariantType.Empty;
 435
 436                         switch(Type.GetTypeCode(varType)) {
 437                         case TypeCode.Empty:
 438                                 return VariantType.Empty;
 439                         case TypeCode.DBNull:
 440                                 return VariantType.Null;
 441                         case TypeCode.Boolean:
 442                                 return VariantType.Boolean;
 443                         case TypeCode.Char:
 444                                 return VariantType.Char;
 445                         case TypeCode.Byte:
 446                                 return VariantType.Byte;
 447                         case TypeCode.Int16:
 448                                 return VariantType.Short;
 449                         case TypeCode.Int32:
 450                                 return VariantType.Integer;
 451                         case TypeCode.Int64:
 452                                 return VariantType.Long;
 453                         case TypeCode.Single:
 454                                 return VariantType.Single;
 455                         case TypeCode.Double:
 456                                 return VariantType.Double;
 457                         case TypeCode.Decimal:
 458                                 return VariantType.Decimal;
 459                         case TypeCode.DateTime:
 460                                 return VariantType.Date;
 461                         case TypeCode.String:
 462                                 return VariantType.String;
 463                         }
 464
 465                         if(varType.IsSubclassOf(typeof(System.Exception)))
 466                                 return VariantType.Error;
 467
 468                         if(varType.IsValueType)
 469                                 return VariantType.UserDefinedType;
 470
 471                         return VariantType.Object;
 472                 }
 473         }
 474 }
 475
 476