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'
' IntegerType.vb
'
' Author:
' Mizrahi Rafael (rafim@mainsoft.com)
' Guy Cohen (guyc@mainsoft.com)
'
' Copyright (C) 2002-2006 Mainsoft Corporation.
' Copyright (C) 2004-2006 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.
Imports System
Imports System.Runtime.InteropServices
Namespace Microsoft.VisualBasic.CompilerServices
<System.ComponentModel.EditorBrowsable(ComponentModel.EditorBrowsableState.Never)> _
Public NotInheritable Class IntegerType
Private Sub New()
'Nobody should see constructor
End Sub
Public Shared Function FromObject(ByVal Value As Object) As Integer
Try
'implicit casting of Nothing returns 0
If Value Is Nothing Then
Return 0
End If
Dim type1 As Type = Value.GetType()
Select Case Type.GetTypeCode(type1)
Case TypeCode.Boolean
Return (-1) * Convert.ToInt32(DirectCast(Value, Boolean))
Case TypeCode.Byte
Return DirectCast(Value, Byte)
Case TypeCode.Double
Return Convert.ToInt32(DirectCast(Value, Double))
Case TypeCode.Decimal
Return Convert.ToInt32((DirectCast(Value, Decimal)))
Case TypeCode.Int32
Return DirectCast(Value, Integer)
Case TypeCode.Int16
Return DirectCast(Value, Short)
Case TypeCode.Int64
Return Convert.ToInt32(DirectCast(Value, Long))
Case TypeCode.Single
Return Convert.ToInt32(DirectCast(Value, Single))
Case TypeCode.String
Return IntegerType.FromString(DirectCast(Value, String))
Case TypeCode.SByte
Return DirectCast(Value, SByte)
Case TypeCode.UInt16
Return DirectCast(Value, UShort)
Case TypeCode.UInt32
Return Convert.ToInt32(DirectCast(Value, UInteger))
Case TypeCode.UInt64
Return Convert.ToInt32(DirectCast(Value, ULong))
End Select
Catch ex As Exception
End Try
Throw New InvalidCastException("Cast from '" + Value.GetType().Name + "' to type 'Integer' is not valid.")
End Function
Public Shared Function FromString(ByVal Value As String) As Integer
'implicit casting of Nothing returns 0
If Value Is Nothing Then
Return 0
End If
#If TRACE Then
System.Console.WriteLine("TRACE:IntegerType.FromString:Value:" + Value.ToString())
#End If
Try
#If TRACE Then
System.Console.WriteLine("TRACE:IntegerType.FromString:Value:" + Int32.Parse(Value).ToString())
#End If
Return Int32.Parse(Value)
Catch ex As Exception
Throw New InvalidCastException(String.Format(Utils.GetResourceString("CastFromStringToType"), Value, "Integer"), ex)
End Try
End Function
End Class
End Namespace
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