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/* OpenIDA - Outil d'analyse de fichiers binaires
* dllist.h - prototypes de l'implantation simple des listes doublement chaînées
*
* Copyright (C) 2008 Cyrille Bagard
*
* This file is part of OpenIDA.
*
* OpenIDA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* OpenIDA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _COMMON_DLLIST_H
#define _COMMON_DLLIST_H
#include "macros.h"
/* Structure à inclure en tête de structure */
typedef struct _dl_list_item
{
struct _dl_list_item *prev; /* Elément précédent */
struct _dl_list_item *next; /* Elément suivant */
} dl_list_item;
typedef dl_list_item *dl_list_head;
#define DL_LIST_ITEM(name) dl_list_item name
#define DL_LIST_ITEM_INIT(item) \
do \
{ \
(item)->prev = (item); \
(item)->next = (item); \
\
} while(0)
/* Ajoute un élément dans une liste doublement chaînée. */
void __dl_list_add(dl_list_item *, dl_list_head *, dl_list_item *, dl_list_item *);
/* Supprime un élément d'une liste doublement chaînée. */
void __dl_list_del(dl_list_item *, dl_list_head *);
#define dl_list_empty(head) \
((head) == NULL)
#define dl_list_last(head, type, member) \
(dl_list_empty(head) ? NULL : (type *)container_of(head->member.prev, type, member))
#define dl_list_add(new, head, type, member) \
do \
{ \
dl_list_item *hmbr = (dl_list_empty(*(head)) ? NULL : &(*head)->member); \
__dl_list_add(&new->member, &hmbr, \
dl_list_empty(*(head)) ? &new->member : hmbr->prev, \
dl_list_empty(*(head)) ? &new->member : hmbr); \
*(head) = new; \
} \
while (0)
#define dl_list_add_before(new, head, pos, member) \
do \
{ \
pos->member.prev->next = &new->member; \
new->member.prev = pos->member.prev; \
pos->member.prev = &new->member; \
new->member.next = &pos->member; \
if (pos == *head) *head = new; \
} \
while (0)
#define dl_list_add_tail(new, head, type, member) \
do \
{ \
dl_list_item *hmbr = (dl_list_empty(*(head)) ? NULL : &(*head)->member); \
__dl_list_add(&new->member, &hmbr, \
dl_list_empty(*(head)) ? &new->member : hmbr->prev, \
dl_list_empty(*(head)) ? &new->member : hmbr); \
*(head) = container_of(hmbr, type, member); \
} \
while (0)
#define dl_list_del(item, head, type, member) \
do \
{ \
dl_list_item *hmbr = &(*head)->member; \
__dl_list_del(&item->member, &hmbr); \
*(head) = (hmbr ? container_of(hmbr, type, member) : NULL); \
DL_LIST_ITEM_INIT(&item->member); \
} \
while(0)
#define dl_list_push dl_list_add_tail
#define dl_list_pop(head, type, member) \
({ \
type *_result = *head; \
dl_list_del(_result, head, type, member); \
_result; \
})
#define dl_list_next_iter(iter, head, type, member) \
(iter->member.next == &head->member ? \
NULL : container_of(iter->member.next, type, member))
#define dl_list_prev_iter(iter, head, type, member) \
(&iter->member == &head->member ? \
NULL : container_of(iter->member.prev, type, member))
#define dl_list_for_each(pos, head, type, member) \
for (pos = head; \
pos != NULL; \
pos = dl_list_next_iter(pos, (head), type, member))
#define dl_list_next_iter_safe(iter, head, type, member) \
(iter == NULL || iter->member.next == &(*head)->member ? \
NULL : container_of(iter->member.next, type, member))
#define dl_list_for_each_safe(pos, head, next, type, member) \
for (pos = *head, \
next = dl_list_next_iter_safe(pos, (head), type, member); \
pos != NULL; \
pos = next, \
next = dl_list_next_iter_safe(pos, (head), type, member))
#define dl_list_for_each_rev(pos, head, type, member) \
for (pos = dl_list_last(head, type, member); \
pos != NULL; \
pos = dl_list_prev_iter(pos, (head), type, member))
#endif /* _COMMON_DLLIST_H */
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