// file: list_00.cc
//

// include files
//
#include "List.h"

// the implementation of the class List member functions
//

// method: default constructor
//
List::List() {

  // initialize the local data
  //
  head_d = (Node*)NULL;

  // exit gracefully
  //
};

// method: default destructor
//
List::~List() {

  // loop over the list
  //
  while (head_d != (Node*)NULL) {
    Node* tmp = head_d->get_next();
    delete head_d;
    head_d = tmp;
  }

  // clear the local data
  //
  head_d = (Node*)NULL;

  // exit gracefully
  //
};

// method: display
//
void List::display(char* delim_a) {

  // print a delimiter
  //
  fprintf(stdout, "%s\n", delim_a);

  // loop over the list
  //
  Node* tmp = head_d;

  while(tmp != (Node*)NULL) {
    fprintf(stdout, " (%u) value = %d\n", tmp->get_next(), tmp->get_value());
    tmp = tmp->get_next();
  }

  // exit gracefully
  //
};

// method: insert
//
void List::insert(int value_a) {

  // create a new node
  //
  Node* tmp = new Node;

  // add the value to the temporary node
  //
  tmp->put_value(value_a);

  // advance the list
  //
  tmp->put_next(head_d);
  head_d = tmp;

  // exit gracefully
  //
};