private static Value unaryOperation(Operator Op, Value v1)
{
if (v1.GetType() == typeof(Nac))
{
return(Nac.Create());
}
if (v1.GetType() == typeof(Undef))
{
return(Undef.Create());
}
switch (Op)
{
case Operator.INC:
return(Constant.Create(((Constant)v1).Value + 1));
case Operator.DEC:
return(Constant.Create(((Constant)v1).Value - 1));
case Operator.NEG:
return(Constant.Create(-((Constant)v1).Value));
case Operator.NOT:
return(Constant.Create(((Constant)v1).Value > 0 ? 0 : 1));
}
return(null);
}
private static Value binaryOperation(Operator Op, Value v1, Value v2)
{
if (v1.GetType() == typeof(Nac) || v2.GetType() == typeof(Nac))
{
return(Nac.Create());
}
if (v1.GetType() == typeof(Undef) || v2.GetType() == typeof(Undef))
{
return(Undef.Create());
}
switch (Op)
{
case Operator.MUL:
return(Constant.Create(((Constant)v1).Value * ((Constant)v2).Value));
case Operator.DIV:
return(Constant.Create(((Constant)v1).Value / ((Constant)v2).Value));
case Operator.ADD:
return(Constant.Create(((Constant)v1).Value + ((Constant)v2).Value));
case Operator.SUB:
return(Constant.Create(((Constant)v1).Value - ((Constant)v2).Value));
}
return(null);
}