character_list.h

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#ifndef character_LIST_H_
#define character_LIST_H_
 
#include <stdbool.h>
 
/*****************************************************************************
 *                                                                            *
 *  Define a structure for linked list elements.                              *
 *                                                                            *
 *****************************************************************************/
 
typedef struct character_list_elmt_t {
  char data; 
  struct character_list_elmt_t* next; 
} character_list_elmt_t;
 
/*****************************************************************************
 *                                                                            *
 *  Define a structure for linked lists.                                      *
 *                                                                            *
 *****************************************************************************/
 
typedef struct character_list_t {
  int size; 
  character_list_elmt_t* head; 
  character_list_elmt_t* tail; 
} character_list_t;
 
/*****************************************************************************
 *                                                                            *
 *  --------------------------- Public Interface ---------------------------  *
 *                                                                            *
 *****************************************************************************/
 
void character_list_init(character_list_t* list);
 
void character_list_destroy(character_list_t* list);
 
int character_list_ins_next(character_list_t* list, character_list_elmt_t* element,
    char data);
 
int character_list_rem_next(character_list_t* list, character_list_elmt_t* element,
    char* data);
 
int character_list_size (character_list_t* list);
 
character_list_elmt_t* character_list_head(character_list_t* list);
 
character_list_elmt_t* character_list_tail(character_list_t* list);
 
bool character_list_is_head(character_list_t* list, character_list_elmt_t* element);
 
bool character_list_is_tail(character_list_elmt_t* element);
 
char character_list_data(character_list_elmt_t* element);
 
character_list_elmt_t* character_list_next(character_list_elmt_t* element);
 
#endif