Liste_bloc.cpp

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#include <Liste_bloc.h>
 
Implemente_instanciable_sans_constructeur_ni_destructeur(Liste_bloc,"Liste_bloc",Objet_U);
 
Entree& Liste_bloc::readOn(Entree& is) { return is; }
 
Sortie& Liste_bloc::printOn(Sortie& os) const { return os; }
 
/*! @brief Renvoie le dernier element de la liste
 *
 * @return (Liste_bloc&) le dernier element de la liste
 */
Liste_bloc& Liste_bloc::dernier()
{
  if (est_dernier()) return *this;
  Liste_bloc_curseur curseur(*this);
  while (curseur)
    if (curseur.list().est_dernier()) break;
    else ++curseur;
  return curseur.list();
}
 
Liste_bloc::~Liste_bloc()
{
  vide();
  suivant_ = nullptr;
}
 
/*! @brief Vide la liste
 *
 */
void Liste_bloc::vide()
{
  if (!est_vide())
    {
      if (suivant_)
        {
          suivant_->vide();
          delete suivant_;
        }
      data = DerObjU();
    }
  suivant_ = this;
}
 
/*! @brief Operateur d'acces au ieme element de la liste
 *
 * @param (int i) l'indice de l'element a trouver
 * @return (Objet_U&) le ieme element de la liste
 */
Objet_U& Liste_bloc::operator[](int i)
{
  Liste_bloc_curseur curseur(*this);
  if (!curseur)
    {
      Cerr << que_suis_je() << " : empty list !" << finl;
      Process::exit();
    }
  while (curseur && i--)
    ++curseur;
  if (i != -1)
    {
      Cerr << que_suis_je() << " : overflow of list " << finl;
      assert(i == -1);
      Process::exit();
    }
  return curseur.valeur();
}
 
/*! @brief Ajout d'un Objet_U a la liste to_add est libere en sortie
 *
 */
Objet_U& Liste_bloc::add_deplace(DerObjU& to_add)
{
  if (est_vide())
    {
      data.deplace(to_add);
      suivant_ = nullptr;
      return valeur();
    }
  else
    {
      if (est_dernier())
        {
          Liste_bloc *liste_ptr = new Liste_bloc;
          if (!liste_ptr)
            {
              Cerr << "Run out of memory " << finl;
              Process::exit();
            }
          liste_ptr->add_deplace(to_add);
          suivant_ = liste_ptr;
          return suivant_->valeur();
        }
      else
        return dernier().add_deplace(to_add);
    }
}