Associer.cpp

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#include <Associer.h>
#include <Nom.h>
 
Implemente_instanciable(Associer,"Associer|Associate",Interprete);
// XD associate interprete associer INHERITS_BRACE This interpretor allows one object to be associated with another. The
// XD_CONT order of the two objects in this instruction is not important. The object objet_2 is associated to objet_1 if
// XD_CONT this makes sense; if not either objet_1 is associated to objet_2 or the program exits with error because it
// XD_CONT cannot execute the Associate (Associer) instruction. For example, to calculate water flow in a pipe, a
// XD_CONT Pb_Hydraulique type object needs to be defined. But also a Domaine type object to represent the pipe, a time
// XD_CONT discretization object (Scheme_euler_explicit for ex.). These two objects must then be associated with the
// XD_CONT problem.
// XD attr objet_1 chaine objet_1 REQ Objet_1
// XD attr objet_2 chaine objet_2 REQ Objet_2
 
 
Sortie& Associer::printOn(Sortie& os) const
{
  return Interprete::printOn(os);
}
 
Entree& Associer::readOn(Entree& is)
{
  return Interprete::readOn(is);
}
 
/*! @brief Main function of the Associer interpreter: associate two objects.
 *
 *     We try to associate 1 to 2 and 2 to 1, causes an
 *     error if this fails.
 *
 * @param (Entree& is) an input stream, from which the names of the objects to be associated are read
 * @return (Entree&) the modified input stream
 * @throws we cannot associate obj1 and obj2
 */
Entree& Associer::interpreter(Entree& is)
{
  // Parameter acquisition:
  Nom nom1, nom2;
  is >> nom1 >> nom2;
  if(is.eof())
    {
      Cerr << "Reading problem in Associer" << finl;
      exit();
    }
  Objet_U& ob1=objet(nom1);
  Objet_U& ob2=objet(nom2);
  int association12,association21;
  association12=ob1.associer_(ob2);
  association21=0;
  if (!association12)
    {
      association21=ob2.associer_(ob1);
      if(!association21)
        {
          Cerr << "Impossible to associate objects '" << ob1.que_suis_je()
               << "' and '" << ob2.que_suis_je()  << "'" << finl;
          exit();
        }
    }
 
  if (association12==2)
    {
      Cerr << finl;
      Cerr << "The medium " << ob2.que_suis_je() << " \"" << nom2
           << "\" can not be associated to the problem" << finl;
      Cerr << ob1.que_suis_je() << " \"" << nom1
           << "\" because it is already associated with another problem." << finl;
      exit();
    }
  if (association21==2)
    {
      Cerr << finl;
      Cerr << "The medium " << ob1.que_suis_je() << " \"" << nom1
           << "\" can not be associated to the problem" << finl;
      Cerr << ob2.que_suis_je() << " \"" << nom2
           << "\" because it is already associated with another problem." << finl;
      exit();
    }
 
  return is;
}