public override bool Equals(object obj)
{
if (obj == null || GetType() != obj.GetType())
{
return(false);
}
UnaryFunction other = (UnaryFunction)obj;
return(operand.Equals(other.operand));
}
private void VisitUnaryFunction(UnaryFunction function)
{
int step = symbolStack.Peek().step;
switch (step)
{
case 0:
symbolStack.Push(new SymbolProgress(function.operand));
break;
case 1:
symbolStack.Pop();
VisitTop();
break;
}
}