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

   1 //
   2 // LongType.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
  33 using System;
  34 using System.ComponentModel;
  35
  36 namespace Microsoft.VisualBasic.CompilerServices
  37 {
  38         [StandardModule, EditorBrowsable(EditorBrowsableState.Never)]
  39         sealed public class LongType {
  40                 private LongType () {}
  41
  42                 // Methods
  43                 /**
  44                  * The method converts given object to long by the following logic:
  45                  * 1. If input object is null - return 0
  46                  * 2. If input object is String - run FromString method
  47                  * 3. Otherwise run .NET default conversion - Convert.ToInt64
  48                  * @param value - The object that going to be converted
  49                  * @return long The long value that converted from the source object
  50                  * @see system.Convert#ToInt64
  51                  */
  52                 public static long FromObject(object Value) {
  53                         if (Value == null)return 0;
  54
  55                         if (Value is string)return FromString((string) Value);
  56
  57                         return Convert.ToInt64(Value);
  58                 }
  59                 /**
  60                  * The method try to convert given string to long in a following way:
  61                  * 1. If input string is null return 0.
  62                  * 2. If input string represents number: return value of this number,
  63                  * @exception InvalidCastException - in case if number translation failed
  64                  * @param str - The string that converted to long
  65                  * @return long The value that extracted from the input string.
  66                  * @see Microsoft.VisualBasic.VBUtils#isNumber
  67                  */
  68                 public static long FromString(string Value) {
  69                         if (Value == null)return 0;
  70
  71                         return long.Parse(Value);
  72                 }
  73
  74         }
  75 }