castexpression.vb

大名鼎鼎的mono是.NET平台的跨平台（支持linux

' 
' Visual Basic.Net Compiler
' Copyright (C) 2004 - 2007 Rolf Bjarne Kvinge, [e-mail]
' 
' This library is free software; you can redistribute it and/or
' modify it under the terms of the GNU Lesser General Public
' License as published by the Free Software Foundation; either
' version 2.1 of the License, or (at your option) any later version.
' 
' This library is distributed in the hope that it will be useful,
' but WITHOUT ANY WARRANTY; without even the implied warranty of
' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
' Lesser General Public License for more details.
' 
' You should have received a copy of the GNU Lesser General Public
' License along with this library; if not, write to the Free Software
' Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
' 

''' <summary>
'''CastExpression  ::=
'''	"DirectCast" "("  Expression  ","  TypeName  ")"  |
'''	"TryCast" "("  Expression  ","  TypeName  ")"  |
'''	"CType" "("  Expression  ","  TypeName  ")"  |
'''	CastTarget  "("  Expression  ")"
'''CastTarget  ::=
'''	"CBool" | "CByte" | "CChar" | "CDate" | "CDec" | "CDbl" | "CInt" | "CLng" | "CObj" | "CSByte" | "CShort" |
'''	"CSng" | "CStr" | "CUInt" | "CULng" | "CUShort"
''' </summary>
''' <remarks></remarks>
Public MustInherit Class CastExpression
    Inherits Expression

    Shared Function CreateAndParseTo(ByRef result As Expression) As Boolean
        Helper.NotImplemented()
    End Function

    Shared Function IsMe(ByVal tm As tm) As Boolean
        Return tm.CurrentToken.Equals(Enums.CastExpressionTargets)
    End Function

    Protected Overrides Function ResolveExpressionInternal(ByVal Info As ResolveInfo) As Boolean
        Dim result As Boolean = True

        Helper.NotImplemented()

        Return result
    End Function

    Sub New(ByVal Parent As ParsedObject)
        MyBase.New(Parent)
    End Sub

#If DEBUG Then
    Overrides Sub Dump(ByVal Dumper As IndentedTextWriter)
        Helper.NotImplemented()
    End Sub
#End If

End Class