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

   1 //
   2 // DecimalType.cs
   3 //
   4 //      Author:
   5 //      Chris J Breisch (cjbreisch@altavista.net)
   6 //      Dennis Hayes (dennish@raytek.com)
   7 //
   8 //      (C) copyright 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.Globalization;
  34 using System.ComponentModel;
  35
  36 namespace Microsoft.VisualBasic.CompilerServices {
  37         [StandardModule, EditorBrowsable(EditorBrowsableState.Never)]
  38         sealed public class DecimalType {
  39                 private DecimalType () {}
  40
  41                 // Methods
  42                 /**
  43                  * This method converts given boolean to Decimal. true is converted to -1
  44                  * and false to 0.
  45                  * @param value The boolean that going to be converted
  46                  * @return Decimal The Decimal value that converted from the boolean
  47                  */
  48                 public static System.Decimal FromBoolean (System.Boolean Value) {
  49                         if (Value)return Decimal.MinusOne;
  50                         return Decimal.Zero;
  51                 }
  52
  53                 public static System.Decimal FromString (System.String Value) {
  54                         return FromString(Value, null);
  55                 }
  56
  57                 public static System.Decimal FromObject (System.Object Value) {
  58                         return DecimalType.FromObject(Value, null);
  59                 }
  60                 /**
  61                  * The method try to convert given string to Decimal in a following way:
  62                  * 1. If input string is null return 0.
  63                  * 2. If input string represents number: return value of this number,
  64                  * @exception OverflowException - if number is out of Decimal range
  65                  * @exception InvalidCastException - in case if number translation failed
  66                  *  due to NumberFormatException.
  67                  * @exception All other thrown exceptions from Decimal.Parse
  68                  * @param str - The string that converted to Decimal
  69                  * @return Decimal The value that extracted from the input string.
  70                  * @see Microsoft.VisualBasic.VBUtils#isNumber
  71                  */
  72                 public static Decimal FromString(String Value, NumberFormatInfo numberFormat) {
  73                         if (Value == null)return Decimal.Zero;
  74
  75                         //TODO: remove this line
  76                         //return Parse(Value, numberFormat);
  77
  78                         //TODO convert this to C# and uncomment
  79                         //try {
  80                                 //double d;
  81                                 long[] lRes = new long[1];
  82                                 bool b = StringType.IsHexOrOctValue(Value, lRes);
  83                                 if (b == true)return (decimal)lRes[0];
  84                                 return Parse(Value, numberFormat);
  85                         //}
  86                         //catch (OverflowException exp) {
  87                         //      throw (RuntimeException)ExceptionUtils.VbMakeException(6);
  88                         //}
  89                         //catch (FormatException exp) {
  90                         //      throw new InvalidCastException(
  91                         //              Utils.GetResourceString("InvalidCast_FromStringTo",
  92                         //              str, "Decimal"));
  93                         //}
  94                 }
  95                 /**
  96                  * The method converts given object to decimal by the following logic:
  97                  * 1. If input object is null - return 0
  98                  * 2. If input object is String - run FromString method
  99                  * 3. Otherwise run .NET default conversion - Convert.ToDecimal
 100                  * @param value - The object that going to be converted
 101                  * @return Decimal The Decimal value that converted from the source object
 102                  * @see system.Convert#ToDecimal
 103                  */
 104                 public static System.Decimal FromObject (System.Object Value, System.Globalization.NumberFormatInfo NumberFormat) {
 105                         if (Value == null)return Decimal.Zero;
 106
 107                         if (Value is string)return FromString((string) Value, NumberFormat);
 108
 109                         return Convert.ToDecimal(Value);
 110                 }
 111
 112                 /**
 113                  * This method try to parse this string first of all by allowing that the
 114                  * string will contain currency symbol. if an error is thrown the a parse
 115                  * without a currenct is tried.
 116                  * @param value the string that should be parse to Decimal
 117                  * @param numberFormat the relevant NumberFormat.
 118                  * @return Decimal the Decimal value of the string.
 119                  */
 120                 public static System.Decimal Parse (System.String Value, System.Globalization.NumberFormatInfo NumberFormat) {
 121                         return Decimal.Parse(Value, NumberStyles.Any, NumberFormat);
 122                 }
 123         };
 124 }
 125