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/** 
 @file  list.h
 @brief ENet list management 
*/
#ifndef __ENET_LIST_H__
#define __ENET_LIST_H__

#include <stdlib.h>

typedef struct _ENetListNode
{
   struct _ENetListNode * next;
   struct _ENetListNode * previous;
} ENetListNode;

typedef ENetListNode * ENetListIterator;

typedef struct _ENetList
{
   ENetListNode sentinel;
} ENetList;

extern void enet_list_clear (ENetList *);

extern ENetListIterator enet_list_insert (ENetListIterator, void *);
extern void * enet_list_remove (ENetListIterator);
extern ENetListIterator enet_list_move (ENetListIterator, void *, void *);

extern size_t enet_list_size (ENetList *);

#define enet_list_begin(list) ((list) -> sentinel.next)
#define enet_list_end(list) (& (list) -> sentinel)

#define enet_list_empty(list) (enet_list_begin (list) == enet_list_end (list))

#define enet_list_next(iterator) ((iterator) -> next)
#define enet_list_previous(iterator) ((iterator) -> previous)

#define enet_list_front(list) ((void *) (list) -> sentinel.next)
#define enet_list_back(list) ((void *) (list) -> sentinel.previous)

#endif /* __ENET_LIST_H__ */