mirror of
https://github.com/awesomeWM/awesome
synced 2024-11-17 07:47:41 +01:00
138 lines
9.5 KiB
C
138 lines
9.5 KiB
C
/*
|
|
* list.h - useful list handling header
|
|
*
|
|
* Copyright © 2008 Julien Danjou <julien@danjou.info>
|
|
* Copyright © 2006 Pierre Habouzit <madcoder@debian.org>
|
|
*
|
|
* This program 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef AWESOME_COMMON_LIST_H
|
|
#define AWESOME_COMMON_LIST_H
|
|
|
|
#define DO_SLIST(type, prefix, dtor) \
|
|
static inline type *prefix##_list_pop(type **list) \
|
|
{ \
|
|
if (*list) \
|
|
{ \
|
|
type *res = *list; \
|
|
*list = res->next; \
|
|
res->next = NULL; \
|
|
return res; \
|
|
} \
|
|
return NULL; \
|
|
} \
|
|
static inline void prefix##_list_push(type **list, type *item) \
|
|
{ \
|
|
item->next = *list; \
|
|
*list = item; \
|
|
} \
|
|
\
|
|
static inline type **prefix##_list_last(type **list) \
|
|
{ \
|
|
while (*list && (*list)->next) \
|
|
list = &(*list)->next; \
|
|
return list; \
|
|
} \
|
|
\
|
|
static inline void prefix##_list_append(type **list, type *item) \
|
|
{ \
|
|
if(*(list = prefix##_list_last(list))) \
|
|
(*list)->next = item; \
|
|
else \
|
|
(*list) = item; \
|
|
} \
|
|
static inline type *prefix##_list_rev(type *list) \
|
|
{ \
|
|
type *l = NULL; \
|
|
while (list) \
|
|
prefix##_list_push(&l, prefix##_list_pop(&list)); \
|
|
return l; \
|
|
} \
|
|
\
|
|
static inline type **prefix##_list_init(type **list) \
|
|
{ \
|
|
*list = NULL; \
|
|
return list; \
|
|
} \
|
|
static inline void prefix##_list_wipe(type **list) \
|
|
{ \
|
|
while (*list) \
|
|
{ \
|
|
type *item = prefix##_list_pop(list); \
|
|
dtor(&item); \
|
|
} \
|
|
} \
|
|
static inline type *prefix##_list_prev(type **list, type *item) \
|
|
{ \
|
|
type *tmp; \
|
|
if(*list == item) return NULL; \
|
|
for(tmp = *list; tmp && tmp->next != item; tmp = tmp->next); \
|
|
return tmp; \
|
|
} \
|
|
static inline void prefix##_list_swap(type **list, type *item1, \
|
|
type *item2) \
|
|
{ \
|
|
if(!item1 || !item2) return; \
|
|
\
|
|
type *i1n = item1->next; \
|
|
type *i2n = item2->next; \
|
|
type * i1p = prefix##_list_prev(list, item1); \
|
|
type * i2p = prefix##_list_prev(list, item2); \
|
|
item1->next = i2n == item1 ? item2 : i2n; \
|
|
item2->next = i1n == item2 ? item1 : i1n; \
|
|
\
|
|
\
|
|
if(i1p && i1p != item2) \
|
|
i1p->next = item2; \
|
|
if(i2p && i2p != item1) \
|
|
i2p->next = item1; \
|
|
\
|
|
if(*list == item1) \
|
|
*list = item2; \
|
|
else if(*list == item2) \
|
|
*list = item1; \
|
|
} \
|
|
static inline type *prefix##_list_prev_cycle(type **list, type *item) \
|
|
{ \
|
|
type *tmp = prefix##_list_prev(list, item); \
|
|
if(!tmp) \
|
|
tmp = *prefix##_list_last(list); \
|
|
return tmp; \
|
|
} \
|
|
static inline type *prefix##_list_next_cycle(type **list, type *item) \
|
|
{ \
|
|
if(item) \
|
|
{ \
|
|
if(item->next) \
|
|
return item->next; \
|
|
else \
|
|
return *list; \
|
|
} \
|
|
return NULL; \
|
|
} \
|
|
static inline void prefix##_list_detach(type **list, type *item) \
|
|
{ \
|
|
type *prev = prefix##_list_prev(list, item); \
|
|
if(prev) \
|
|
prev->next = item->next; \
|
|
if(item == *list) \
|
|
*list = item->next; \
|
|
item->next = NULL; \
|
|
} \
|
|
|
|
#endif
|
|
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|