public IExpressionNode Simplify()
{
LeftOperand = LeftOperand.Simplify();
RightOperand = RightOperand.Simplify();
if (!LeftOperand.ContainsVariable() && !RightOperand.ContainsVariable())
{
return(new Constant(this.Evaluate(null)));
}
else if (!LeftOperand.ContainsVariable() && RightOperand.ContainsVariable())
{
if (LeftOperand.Evaluate(null) == 0)
{
return(new Constant(0));
}
if (LeftOperand.Evaluate(null) == 1)
{
return(RightOperand.DeepCopy());
}
}
else if (LeftOperand.ContainsVariable() && !RightOperand.ContainsVariable())
{
if (RightOperand.Evaluate(null) == 0)
{
return(new Constant(0));
}
if (RightOperand.Evaluate(null) == 1)
{
return(LeftOperand.DeepCopy());
}
}
return(this);
}