//
// BooleanType.cs
//
-// Author:
-// Chris J Breisch (cjbreisch@altavista.net)
-// Francesco Delfino (pluto@tipic.com)
+// Author:
+// Chris J Breisch (cjbreisch@altavista.net)
+// Dennis Hayes (dennish@raytek.com)
//
-// (C) 2002 Chris J Breisch
-// 2002 Tipic, Inc (http://www.tipic.com)
+// (C) 2002 Chris J Breisch
+// (C) 2004 Joerg Rosenkranz <JoergR@voelcker.com>
//
-
+ /*
+ * Copyright (c) 2002-2003 Mainsoft Corporation.
+ * Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
using System;
+using System.Globalization;
+using System.ComponentModel;
-namespace Microsoft.VisualBasic.CompilerServices
+namespace Microsoft.VisualBasic.CompilerServices
{
- [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
- [Microsoft.VisualBasic.CompilerServices.StandardModuleAttribute]
+ [StandardModule, EditorBrowsableAttribute(EditorBrowsableState.Never)]
sealed public class BooleanType {
- // Declarations
- // Constructors
- // Properties
- // Methods
- public static System.Boolean FromString (System.String Value) { return System.Boolean.Parse(Value); }
- public static System.Boolean FromObject (System.Object Value)
- {
- if ((object)Value == null) return false;
- //if (Value.GetType() == typeof(string)) return FromString((string)Value);
- else return System.Convert.ToBoolean(Value);
+ private BooleanType () {}
+
+ /**
+ * The method converts given object to boolean by the following logic:
+ * 1. If input object is null - return null
+ * 2. If input object is String - run FromString method
+ * 3. Otherwise run .NET default conversion - Convert.ToBoolean
+ * @param value - The object that going to be converted
+ * @return boolean The boolean value that converted from the source object
+ */
+ public static System.Boolean FromObject (object Value) {
+ if (Value == null)
+ return false;
+
+ if (Value is string)
+ return FromString((string)Value);
+
+ //This throws the correct execption, Mainsoft java code has to catch and rethrow to map java to .net
+ return Convert.ToBoolean(Value);
}
- // Events
- };
+
+ /**
+ * The method try to convert given string to boolean in a following way:
+ * 1. If input value is True or False string - return corresponding value
+ * 2. If input string represents number: return true if this number is not
+ * equals to zero, otherwise return false;
+ * @exception InvalidCastException - in case if number translation failed
+ * due to NumberFormatException.
+ * @exception All other thrown exceptions from ClrDobule.Parse
+ * @param str - The string that converted to boolean
+ * @return boolean The value that extracted from the input string.
+ */
+ public static Boolean FromString (string Value) {
+ if(Value == null)
+ return false;
+
+ if (string.Compare(Value, bool.TrueString, true) == 0)
+ return true;
+ if (string.Compare(Value, bool.FalseString, true) == 0)
+ return false;
+
+ double conv;
+ if (double.TryParse(Value, NumberStyles.Any, NumberFormatInfo.InvariantInfo, out conv))
+ return (conv != 0);
+
+ throw new InvalidCastException (
+ string.Format (
+ "Cast from string \"{0}\" to type 'Boolean' is not valid.",
+ Value));
+ }
+ }
}
projects / mono.git / blobdiff