1/*
2 * Copyright (C) 2009 Dan Carpenter.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
16 */
17
18#include "smatch.h"
19
20ALLOCATOR(tracker, "trackers");
21
22struct tracker *alloc_tracker(int owner, const char *name, struct symbol *sym)
23{
24	struct tracker *tmp;
25
26	tmp = __alloc_tracker(0);
27	tmp->name = alloc_string(name);
28	tmp->owner = owner;
29	tmp->sym = sym;
30	return tmp;
31}
32
33void add_tracker(struct tracker_list **list, int owner, const char *name,
34		struct symbol *sym)
35{
36	struct tracker *tmp;
37
38	if (in_tracker_list(*list, owner, name, sym))
39		return;
40	tmp = alloc_tracker(owner, name, sym);
41	add_ptr_list(list, tmp);
42}
43
44void add_tracker_expr(struct tracker_list **list, int owner, struct expression *expr)
45{
46	char *name;
47	struct symbol *sym;
48
49	name = expr_to_var_sym(expr, &sym);
50	if (!name || !sym)
51		goto free;
52	add_tracker(list, owner, name, sym);
53free:
54	free_string(name);
55}
56
57static void free_tracker(struct tracker *t)
58{
59	free_string(t->name);
60	__free_tracker(t);
61}
62
63void del_tracker(struct tracker_list **list, int owner, const char *name,
64		struct symbol *sym)
65{
66	struct tracker *tmp;
67
68	FOR_EACH_PTR(*list, tmp) {
69		if (tmp->owner == owner && tmp->sym == sym
70		    && !strcmp(tmp->name, name)) {
71			DELETE_CURRENT_PTR(tmp);
72			free_tracker(tmp);
73			return;
74		}
75	} END_FOR_EACH_PTR(tmp);
76}
77
78int in_tracker_list(struct tracker_list *list, int owner, const char *name,
79		struct symbol *sym)
80{
81	struct tracker *tmp;
82
83	FOR_EACH_PTR(list, tmp) {
84		if (tmp->owner == owner && tmp->sym == sym
85		    && !strcmp(tmp->name, name))
86			return 1;
87	} END_FOR_EACH_PTR(tmp);
88	return 0;
89}
90
91void free_tracker_list(struct tracker_list **list)
92{
93	__free_ptr_list((struct ptr_list **)list);
94}
95
96void free_trackers_and_list(struct tracker_list **list)
97{
98	struct tracker *tmp;
99
100	FOR_EACH_PTR(*list, tmp) {
101		free_tracker(tmp);
102	} END_FOR_EACH_PTR(tmp);
103	free_tracker_list(list);
104}
105
106