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/*
viDOOM - level editor for DOOM
Copyright (C) 2000 Ian Cowburn (ianc@noddybox.demon.co.uk)
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-------------------------------------------------------------------------
Provides a double-linked list
$Id$
*/
#ifndef _LIST_H
#define _LIST_H
/* Opaque types for the list and iterator. NULL is the null list and iterator.
*/
struct _List;
typedef struct _List *List;
struct _Iterator;
typedef struct _Iterator *Iterator;
/* Create a list
*/
List ListNew(int type_size);
/* Free a list object
*/
List ListClear(List l);
/* Free all elements in a list
*/
List ListEmpty(List l);
/* Return number of elements in list
*/
int ListSize(List l);
/* Create an iterator over the list
*/
Iterator ListIterator(List l);
/* Destory an iterator
*/
Iterator IteratorClear(Iterator i);
/* Get data for pointed to by this iterator object
*/
void *IteratorData(Iterator i);
/* Move the iterator to the next element. NULL once done.
*/
Iterator IteratorNext(Iterator i);
/* Move the iterator to the previous element. NULL once done.
*/
Iterator IteratorPrev(Iterator i);
/* Replace the data currently stored in this this position with the new one
*/
Iterator IteratorUpdate(Iterator i,void *data);
/* Delete the data currently stored in this position and move the iterator to
the next element.
*/
Iterator IteratorDelete(Iterator i);
/* Append to the tail of the the list
*/
void ListAppend(List l,void *data);
/* Insert at the head of the the list
*/
void ListInsert(List l,void *data);
/* Return an iterator for the searched element. Note the fist void* passed
to the predicate will be of the type stored in the lists. The second
argument will be whatever was passed as data.
*/
Iterator ListFindElem(List l,int (*pred)(void *, void *),void *data);
#endif
/* END OF FILE */
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