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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* Support for linked lists.
*/
/** \file blender/blenlib/intern/BLI_linklist.c
* \ingroup bli
*/
#include "MEM_guardedalloc.h"
#include "BLI_linklist.h"
#include "BLI_memarena.h"
#include "BLI_mempool.h"
int BLI_linklist_length(LinkNode *list)
{
int len;
for (len = 0; list; list = list->next)
len++;
return len;
}
int BLI_linklist_index(LinkNode *list, void *ptr)
{
int index;
for (index = 0; list; list = list->next, index++)
if (list->link == ptr)
return index;
return -1;
}
LinkNode *BLI_linklist_find(LinkNode *list, int index)
{
int i;
for (i = 0; list; list = list->next, i++)
if (i == index)
return list;
return NULL;
}
void BLI_linklist_reverse(LinkNode **listp)
{
LinkNode *rhead = NULL, *cur = *listp;
while (cur) {
LinkNode *next = cur->next;
cur->next = rhead;
rhead = cur;
cur = next;
}
*listp = rhead;
}
/**
* A version of prepend that takes the allocated link.
*/
void BLI_linklist_prepend_nlink(LinkNode **listp, void *ptr, LinkNode *nlink)
{
nlink->link = ptr;
nlink->next = *listp;
*listp = nlink;
}
void BLI_linklist_prepend(LinkNode **listp, void *ptr)
{
LinkNode *nlink = MEM_mallocN(sizeof(*nlink), "nlink");
BLI_linklist_prepend_nlink(listp, ptr, nlink);
}
void BLI_linklist_prepend_arena(LinkNode **listp, void *ptr, MemArena *ma)
{
LinkNode *nlink = BLI_memarena_alloc(ma, sizeof(*nlink));
BLI_linklist_prepend_nlink(listp, ptr, nlink);
}
void BLI_linklist_prepend_pool(LinkNode **listp, void *ptr, BLI_mempool *mempool)
{
LinkNode *nlink = BLI_mempool_alloc(mempool);
BLI_linklist_prepend_nlink(listp, ptr, nlink);
}
/**
* A version of append that takes the allocated link.
*/
void BLI_linklist_append_nlink(LinkNode **listp, void *ptr, LinkNode *nlink)
{
LinkNode *node = *listp;
nlink->link = ptr;
nlink->next = NULL;
if (node == NULL) {
*listp = nlink;
}
else {
while (node->next != NULL) {
node = node->next;
}
node->next = nlink;
}
}
void BLI_linklist_append(LinkNode **listp, void *ptr)
{
LinkNode *nlink = MEM_mallocN(sizeof(*nlink), "nlink");
BLI_linklist_append_nlink(listp, ptr, nlink);
}
void BLI_linklist_append_arena(LinkNode **listp, void *ptr, MemArena *ma)
{
LinkNode *nlink = BLI_memarena_alloc(ma, sizeof(*nlink));
BLI_linklist_append_nlink(listp, ptr, nlink);
}
void BLI_linklist_append_pool(LinkNode **listp, void *ptr, BLI_mempool *mempool)
{
LinkNode *nlink = BLI_mempool_alloc(mempool);
BLI_linklist_append_nlink(listp, ptr, nlink);
}
void *BLI_linklist_pop(struct LinkNode **listp)
{
/* intentionally no NULL check */
void *link = (*listp)->link;
void *next = (*listp)->next;
MEM_freeN((*listp));
*listp = next;
return link;
}
void *BLI_linklist_pop_pool(struct LinkNode **listp, struct BLI_mempool *mempool)
{
/* intentionally no NULL check */
void *link = (*listp)->link;
void *next = (*listp)->next;
BLI_mempool_free(mempool, (*listp));
*listp = next;
return link;
}
void BLI_linklist_insert_after(LinkNode **listp, void *ptr)
{
LinkNode *nlink = MEM_mallocN(sizeof(*nlink), "nlink");
LinkNode *node = *listp;
nlink->link = ptr;
if (node) {
nlink->next = node->next;
node->next = nlink;
}
else {
nlink->next = NULL;
*listp = nlink;
}
}
void BLI_linklist_free(LinkNode *list, LinkNodeFreeFP freefunc)
{
while (list) {
LinkNode *next = list->next;
if (freefunc)
freefunc(list->link);
MEM_freeN(list);
list = next;
}
}
void BLI_linklist_free_pool(LinkNode *list, LinkNodeFreeFP freefunc, struct BLI_mempool *mempool)
{
while (list) {
LinkNode *next = list->next;
if (freefunc)
freefunc(list->link);
BLI_mempool_free(mempool, list);
list = next;
}
}
void BLI_linklist_freeN(LinkNode *list)
{
while (list) {
LinkNode *next = list->next;
MEM_freeN(list->link);
MEM_freeN(list);
list = next;
}
}
void BLI_linklist_apply(LinkNode *list, LinkNodeApplyFP applyfunc, void *userdata)
{
for (; list; list = list->next)
applyfunc(list->link, userdata);
}
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