' Licensed to the .NET Foundation under one or more agreements.
' The .NET Foundation licenses this file to you under the MIT license.
 
Imports System
 
Imports Microsoft.VisualBasic.CompilerServices.Utils
 
Namespace Microsoft.VisualBasic.CompilerServices
 
    <System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)>
    Public NotInheritable Class CharType
        ' Prevent creation.
        Private Sub New()
        End Sub
 
        Public Shared Function FromString(ByVal Value As String) As Char
            If (Value Is Nothing) OrElse (Value.Length = 0) Then
                Return ControlChars.NullChar
            End If
 
            Return Value.Chars(0)
        End Function
 
        Public Shared Function FromObject(ByVal Value As Object) As Char
 
            If Value Is Nothing Then
                Return ChrW(0)
            End If
 
            Dim ValueInterface As IConvertible
            Dim ValueTypeCode As TypeCode
 
            ValueInterface = TryCast(Value, IConvertible)
 
            If Not ValueInterface Is Nothing Then
 
                ValueTypeCode = ValueInterface.GetTypeCode()
 
                Select Case ValueTypeCode
                    Case TypeCode.Char
                        Return ValueInterface.ToChar(Nothing)
 
                    Case TypeCode.String
                        Return CharType.FromString(ValueInterface.ToString(Nothing))
 
                    Case TypeCode.Boolean,
                         TypeCode.Byte,
                         TypeCode.Int16,
                         TypeCode.Int32,
                         TypeCode.Int64,
                         TypeCode.Single,
                         TypeCode.Double,
                         TypeCode.Decimal,
                         TypeCode.DateTime
                        ' Fall through to error
 
                    Case Else
                        ' Fall through to error
                End Select
            End If
 
            Throw New InvalidCastException(SR.Format(SR.InvalidCast_FromTo, VBFriendlyName(Value), "Char"))
        End Function
 
    End Class
 
End Namespace