Beispiel #1
0
void print(DictionaryList& dl)
{
  if (dl.size() == 0)
    cout << "  List is EMPTY.\n";
  for (dl.go_to_first(); dl.cursor_ok(); dl.step_fwd()) {
    cout << "  " << dl.cursor_key();
    cout << "  " << dl.cursor_datum().c_str() << '\n';
  }
}
Beispiel #2
0
void test_copying()
{
   DictionaryList one;

  // Copy an empty list.
  DictionaryList two;
  assert(two.size() == 0);

  // Copy a list with three entries and a valid cursor.
  one.insert(319,"Randomness");
  one.insert(315,"Shocks");
  one.insert(335,"ParseErrors");
  one.go_to_first();
  one.step_fwd();
    
  DictionaryList three(one);
    
  assert(three.cursor_datum().isEqual("Randomness"));
  one.remove(335);

  cout << "Printing list--keys should be 315, 319\n";
  print(one);
  
  cout << "Printing list--keys should be 315, 319, 335\n";
  print(three);

  // Assignment operator check.
  one = two = three = three;
  one.remove(319);
  two.remove(315);
  
  cout << "Printing list--keys should be 315, 335\n";
  print(one);

  cout << "Printing list--keys should be 319, 335\n";
  print(two);
  
  cout << "Printing list--keys should be 315, 319, 335\n";
  print(three);

  cout << "***----Finished tests of copying----------------------***\n\n";
}
Beispiel #3
0
void test_operator_overloading(DictionaryList& dl)
{

    DictionaryList dl2 = dl;
    dl.go_to_first();
    dl.step_fwd();
    dl2.go_to_first();

    cout << "\n\nTesting a few comparison and insertion operators." << endl;
    
    // Needs to overload >= and << (insertion operator) in class Mystring
	if (dl.cursor_datum() >= (dl2.cursor_datum()))
		cout << endl << dl.cursor_datum() << " is greater than or equal " << dl2.cursor_datum();
	else
       cout << endl << dl2.cursor_datum() << " is greater than " << dl.cursor_datum();

    // Needs to overload <= for Mystring
    if(dl.cursor_datum() <= (dl2.cursor_datum()))
        cout << dl.cursor_datum() << " is less than or equal" << dl2.cursor_datum();
    else
        cout << endl << dl2.cursor_datum() << " is less than " << dl.cursor_datum();

	// Needs to overload != for Mystring
    if(dl.cursor_datum() != (dl2.cursor_datum()))
        cout << endl << dl.cursor_datum() << " is not equal to " << dl2.cursor_datum();
    else
        cout << endl << dl2.cursor_datum() << " is equal to " << dl.cursor_datum();

	// Needs to overload > for Mystring
    if(dl.cursor_datum() > (dl2.cursor_datum()))
        cout << endl << dl.cursor_datum() << " is greater than " << dl2.cursor_datum();
    else
        cout << endl << dl.cursor_datum() << " is not greater than " << dl2.cursor_datum();

	// Needs to overload < for Mystring
    if(dl.cursor_datum() < (dl2.cursor_datum()))
        cout << endl << dl.cursor_datum() << " is less than " << dl2.cursor_datum();
    else
        cout << endl << dl.cursor_datum() << " is not less than " << dl2.cursor_datum();

	// Needs to overload == for Mystring
    if(dl.cursor_datum() == (dl2.cursor_datum()))
        cout << endl << dl.cursor_datum() << " is equal to " << dl2.cursor_datum();
    else
        cout << endl << dl.cursor_datum() << " is not equal to " << dl2.cursor_datum();
    cout << endl << "\nUsing square bracket [] to access elements of Mystring objects. ";
	
    char c = dl.cursor_datum()[1];
    cout << endl << "The second element of "  << dl.cursor_datum() << " is: " << c;
    
    dl.cursor_datum()[1] = 'o';
    c = dl.cursor_datum()[1];
    cout << endl << "The second element of "  << dl.cursor_datum() << " is: " << c;
	
    cout << endl << "\nUsing << to display key/datum pairs in a Dictionary list: \n";
    /* The following line is expected to display the content of the linked list 
     * dl2 -- key/datum pairs. It should display:
     *   8001  Allen
     *   8002  Peter
     *   8003  Sam
     *   8004  PointyHair
     */
    cout << dl2;

    cout << endl << "\nUsing [] to display the datum only: \n";

    /* The following line is expected to display the content of the linked list
     * dl2 -- datum. It should display:
     *   Allen
     *   Peter
     *   Sam
     *   PointyHair
     */
    
    for(int i =0; i < dl2.size(); i++)
        cout << dl2[i] << endl;
    
    cout << endl << "\nUsing [] to display sequence of charaters in a datum: \n";
    /* The following line is expected to display the characters in the first node 
     * of the dictionary. It should display:
     *   A
     *   l
     *   l
     *   e
     *   n
     */
    cout << dl2[0][0] << endl;
    cout << dl2[0][1] << endl;
    cout << dl2[0][2] << endl;
    cout << dl2[0][3] << endl;
    cout << dl2[0][4] << endl;

    cout << "\n\n***----Finished tests for overloading operators ----------***\n\n";
}