mcs/class/Microsoft.VisualBasic/Microsoft.VisualBasic/Microsoft.VisualBasic.CompilerServices/CharArrayType.cs

   1 //
   2 // CharArrayType.cs
   3 //
   4 //      Author:
   5 //      Chris J Breisch (cjbreisch@altavista.net)
   6 //      Dennis Hayes (dennish@raytek.com)
   7 //
   8 //      (C) 2002 Chris J Breisch
   9 //
  10  /*
  11   * Copyright (c) 2002-2003 Mainsoft Corporation.
  12   * Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13   *
  14   * Permission is hereby granted, free of charge, to any person obtaining a
  15   * copy of this software and associated documentation files (the "Software"),
  16   * to deal in the Software without restriction, including without limitation
  17   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  18   * and/or sell copies of the Software, and to permit persons to whom the
  19   * Software is furnished to do so, subject to the following conditions:
  20   *
  21   * The above copyright notice and this permission notice shall be included in
  22   * all copies or substantial portions of the Software.
  23   *
  24   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  25   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  27   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  28   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  29   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  30   * DEALINGS IN THE SOFTWARE.
  31   */
  32 using System;
  33 using System.ComponentModel;
  34
  35 namespace Microsoft.VisualBasic.CompilerServices
  36 {
  37         [StandardModule, EditorBrowsable(EditorBrowsableState.Never)]
  38         sealed public class CharArrayType {
  39                 private CharArrayType () {}
  40
  41                 /**
  42                                  * The method converts given object to char[] by the following logic:
  43                                  * 1. If input object is null - return empty char array
  44                                  * 2. If input object is char array - return this object
  45                                  * 3. If input object is String - return char array representing this String
  46                                  * @param value - The object that going to be converted
  47                                  * @return char[] The char array that converted from the source object
  48                                  * @exception InvalidCastException - in case if value is not String or char[].
  49                                  */
  50                 public static char[] FromObject(object Value) {
  51                         if (Value == null)
  52                                 return new char[]{};
  53
  54                         if (Value is char[])
  55                                 return (char[])Value;
  56
  57                         if (Value is string)
  58                                 return FromString((string)Value);// could be replaced with Value.ToCharArray();, but spec says make the call.
  59
  60                         throw new InvalidCastException("InvalidCast_From " + Value.GetType().Name + " To char");
  61                 }
  62
  63                 /**
  64                 * The method converts given string to byte of chars:
  65                 * @param str - The string that converted to char array
  66                 * @return char[] The value that extracted from the input string.
  67                 */
  68                 public static char[] FromString(string Value) {
  69                         if (Value == null)return new char[]{};
  70                         return Value.ToCharArray();
  71                 }
  72         }
  73 }
  74
  75