1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                 Eclipse Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*          http://www.eclipse.org/org/documents/epl-v10.html           *
11*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
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#pragma prototyped
23
24/*
25 * return p stat info
26 */
27
28#include "reglib.h"
29
30regstat_t*
31regstat(const regex_t* p)
32{
33	register Rex_t*	e;
34
35	p->env->stats.re_flags = p->env->flags;
36	p->env->stats.re_info = 0;
37	e = p->env->rex;
38	if (e && e->type == REX_BM)
39	{
40		p->env->stats.re_record = p->env->rex->re.bm.size;
41		e = e->next;
42	}
43	else
44		p->env->stats.re_record = 0;
45	if (e && e->type == REX_BEG)
46		e = e->next;
47	if (e && e->type == REX_STRING)
48		e = e->next;
49	if (!e || e->type == REX_END && !e->next)
50		p->env->stats.re_info |= REG_LITERAL;
51	p->env->stats.re_record = (p && p->env && p->env->rex->type == REX_BM) ? p->env->rex->re.bm.size : -1;
52	return &p->env->stats;
53}
54