1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#include	"dthdr.h"
23
24/*	Extract objects of a dictionary.
25**
26**	Written by Kiem-Phong Vo (5/25/96).
27*/
28
29#if __STD_C
30Dtlink_t* dtextract(reg Dt_t* dt)
31#else
32Dtlink_t* dtextract(dt)
33reg Dt_t*	dt;
34#endif
35{
36	reg Dtlink_t	*list, **s, **ends;
37
38	if(dt->data->type&(DT_OSET|DT_OBAG) )
39		list = dt->data->here;
40	else if(dt->data->type&(DT_SET|DT_BAG))
41	{	list = dtflatten(dt);
42		for(ends = (s = dt->data->htab) + dt->data->ntab; s < ends; ++s)
43			*s = NIL(Dtlink_t*);
44	}
45	else /*if(dt->data->type&(DT_LIST|DT_STACK|DT_QUEUE))*/
46	{	list = dt->data->head;
47		dt->data->head = NIL(Dtlink_t*);
48	}
49
50	dt->data->type &= ~DT_FLATTEN;
51	dt->data->size = 0;
52	dt->data->here = NIL(Dtlink_t*);
53
54	return list;
55}
56