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/*
* libtu/ptrlist.h
*
* Copyright (c) Tuomo Valkonen 1999-2005.
*
* You may distribute and modify this library under the terms of either
* the Clarified Artistic License or the GNU LGPL, version 2.1 or later.
*/
#ifndef LIBTU_PTRLIST_H
#define LIBTU_PTRLIST_H
#include "types.h"
#include "iterable.h"
INTRSTRUCT(PtrList);
DECLSTRUCT(PtrList){
void *ptr;
PtrList *next, *prev;
};
typedef PtrList* PtrListIterTmp;
#define PTRLIST_FIRST(TYPE, LL) ((LL)==NULL ? NULL : (TYPE)(LL)->ptr)
#define PTRLIST_LAST(TYPE, LL) ((LL)==NULL ? NULL : (TYPE)(LL)->prev->ptr)
#define PTRLIST_EMPTY(LIST) ((LIST)==NULL)
#define FOR_ALL_ON_PTRLIST(TYPE, VAR, LL, TMP) \
FOR_ALL_ITER(ptrlist_iter_init, (TYPE)ptrlist_iter, VAR, LL, &(TMP))
#define FOR_ALL_ON_PTRLIST_REV(TYPE, VAR, LL, TMP) \
FOR_ALL_ITER(ptrlist_iter_rev_init, \
(TYPE)ptrlist_iter_rev, VAR, LL, &(TMP))
#define FOR_ALL_ON_PTRLIST_UNSAFE(TYPE, VAR, LL) \
FOR_ALL_ON_PTRLIST(TYPE, VAR, LL, ptrlist_iter_tmp)
extern PtrListIterTmp ptrlist_iter_tmp;
extern bool ptrlist_insert_last(PtrList **ptrlist, void *ptr);
extern bool ptrlist_insert_first(PtrList **ptrlist, void *ptr);
extern bool ptrlist_reinsert_last(PtrList **ptrlist, void *ptr);
extern bool ptrlist_reinsert_first(PtrList **ptrlist, void *ptr);
extern bool ptrlist_remove(PtrList **ptrlist, void *ptr);
extern bool ptrlist_contains(PtrList *ptrlist, void *ptr);
extern void ptrlist_clear(PtrList **ptrlist);
extern void ptrlist_iter_init(PtrListIterTmp *state, PtrList *ptrlist);
extern void *ptrlist_iter(PtrListIterTmp *state);
extern void ptrlist_iter_rev_init(PtrListIterTmp *state, PtrList *ptrlist);
extern void *ptrlist_iter_rev(PtrListIterTmp *state);
extern void *ptrlist_take_first(PtrList **ptrlist);
extern void *ptrlist_take_last(PtrList **ptrlist);
#endif /* LIBTU_PTRLIST_H */
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