Polynomial operator+ override

Polynomial Polynomial::operator+ (const Polynomial& object)
{
    Term *factor1 = this->top;
    Term *factor2 = object.top;
    Polynomial result;
    bool valAdded = false;
    while(factor1->getLink() != NULL)
    {
        while(factor2->getLink() != NULL && !valAdded)
        {
            if(factor1->getN() == factor2->getN())
            {
                result.addNew(factor1->getA() + factor2->getA(),factor1->getN());
                valAdded = true;
            }
            else
                factor2 = factor2->getLink();
        }
        factor2 = object.top;
        if(!valAdded)
        {
            result.addNew(factor1->getA(),factor1->getN());
            valAdded = true;
        }
        factor1 = factor1->getLink();
        valAdded = false;
    }
    factor1 = this->top;
    return result;
}