/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#include "dthdr.h"
/* 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;
}