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/* $Id: dtextract.c,v 1.3 2009/06/03 01:10:51 ellson Exp $ $Revision: 1.3 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#include "dthdr.h"
#ifdef DMALLOC
#include "dmalloc.h"
#endif
/* Extract objects of a dictionary.
**
** Written by Kiem-Phong Vo (5/25/96).
*/
#if __STD_C
Dtlink_t *dtextract(reg Dt_t * dt)
#else
Dtlink_t *dtextract(dt)
reg Dt_t *dt;
#endif
{
reg Dtlink_t *list, **s, **ends;
if (dt->data->type & (DT_OSET | DT_OBAG))
list = dt->data->here;
else if (dt->data->type & (DT_SET | DT_BAG)) {
list = dtflatten(dt);
for (ends = (s = dt->data->htab) + dt->data->ntab; s < ends; ++s)
*s = NIL(Dtlink_t *);
} else { /*if(dt->data->type&(DT_LIST|DT_STACK|DT_QUEUE)) */
list = dt->data->head;
dt->data->head = NIL(Dtlink_t *);
}
dt->data->type &= ~DT_FLATTEN;
dt->data->size = 0;
dt->data->here = NIL(Dtlink_t *);
return list;
}
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