/*
 *      Copyright (c) 2023, an unpublished work by CodeSecure, Inc.
 *                      ALL RIGHTS RESERVED
 *
 *      Copyright (c) 2005-2023, an unpublished work by GrammaTech, Inc.
 *                      ALL RIGHTS RESERVED
 *
 *      This software is furnished under a license and may be used and
 *      copied only in accordance with the terms of such license and the       
 *      inclusion of the above copyright notice.  This software or any
 *      other copies thereof may not be provided or otherwise made
 *      available to any other person.  Title to and ownership of the
 *      software is retained by CodeSecure, Inc.
 */

/* my_iterator.h
 *
 * contains declarations for an iterator
 */

#define MAXSIZE 100

typedef struct {
  int buf[MAXSIZE];
  int used;
  int ptr;
} it;


               /* makes a new iterator */
it *my_iterator_New(void);

               /* frees an iterator */
void my_iterator_Dispose(it *i);

               /* sets up the iterator */
void my_iterator_Init(it *i); 


               /* sends iterator back to beginning of space */
void my_iterator_First(it *i);


               /* advances the iterator. Returns
                * 1 if advanced successfully, 
                * 0 if nowhere to advance to */
int my_iterator_Next(it *i);


               /* checks that current iterator position 
                * has a valid value */
int my_iterator_IsValid(it *i);


               /* gets value at current iterator position. Shouldn't
                * be done unless value at this position has been
                * checked with my_iterator_IsValid */
int my_iterator_GetVal(it *i);


               /* sets value at current iterator position to val. */
 void my_iterator_SetVal(it *i, int val);