xref: /titanic_50/usr/src/lib/libast/common/cdt/dtextract.c (revision 9b5097ee22b7d249db813b466eda136ffc2c21fa)
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
30 Dtlink_t* dtextract(reg Dt_t* dt)
31 #else
32 Dtlink_t* dtextract(dt)
33 reg 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