Namespace ScriptVersion2

    Partial Class ScriptComparer

        ' --------------------------------------------------------------------------------------------------------------------------
        ' Contains the <math> constructs.
        ' --------------------------------------------------------------------------------------------------------------------------

        Private Shared Function DoMath(ByVal subClass As String) As Object
            Dim command As String = GetSubClassArgumentPair(subClass).Command
            Dim argument As String = GetSubClassArgumentPair(subClass).Argument

            Select Case command.ToLower(Globalization.CultureInfo.InvariantCulture)
                Case "int"
                    Return int(argument)
                Case "sng"
                    Return sng(argument)
                Case "dbl"
                    Return dbl(argument)
                Case "abs"
                    Return Math.Abs(dbl(argument))
                Case "ceiling"
                    Return Math.Ceiling(dbl(argument))
                Case "floor"
                    Return Math.Floor(dbl(argument))
                Case "isint", "issng", "isdbl"
                    Return ReturnBoolean(ScriptConversion.IsArithmeticExpression(argument))
                Case "clamp"
                    Dim args() As String = argument.Split(CChar(","))
                    Dim n As Double = dbl(args(0))
                    Dim min As Double = dbl(args(1))
                    Dim max As Double = dbl(args(2))

                    Return n.Clamp(min, max)
                Case "rollover"
                    Dim args() As String = argument.Split(CChar(","))
                    Dim n As Double = dbl(args(0))
                    Dim min As Double = dbl(args(1))
                    Dim max As Double = dbl(args(2))

                    Dim diff As Double = (max - min) + 1

                    If n > max Then
                        While n > max
                            n -= diff
                        End While
                    ElseIf n < min Then
                        While n < min
                            n += diff
                        End While
                    End If

                    Return n
            End Select

            Return DEFAULTNULL
        End Function

    End Class

End Namespace