707cc7a88dac7908585165f792a7cb80716d5aa4
[babeltrace.git] / lib / ctf-writer / visitor.c
1 /*
2 * visitor.c
3 *
4 * Babeltrace CTF writer - Visitor
5 *
6 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
7 *
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * SOFTWARE.
27 */
28
29 #include <babeltrace2/ctf-writer/visitor-internal.h>
30 #include <babeltrace2/ctf-writer/object.h>
31
32 BT_HIDDEN
33 int bt_ctf_visitor_helper(struct bt_ctf_visitor_object *root,
34 bt_ctf_child_count_accessor child_counter,
35 bt_ctf_child_accessor child_accessor,
36 bt_ctf_child_visitor child_visitor,
37 bt_ctf_visitor visitor,
38 void *data)
39 {
40 int ret, child_count, i;
41
42 ret = visitor(root, data);
43 if (ret) {
44 goto end;
45 }
46
47 child_count = child_counter(root->object);
48 if (child_count < 0) {
49 ret = child_count;
50 goto end;
51 }
52
53 for (i = 0; i < child_count; i++) {
54 void *child;
55
56 child = child_accessor(root->object, i);
57 if (!child) {
58 ret = -1;
59 goto end;
60 }
61 ret = child_visitor(child, visitor, data);
62 BT_CTF_OBJECT_PUT_REF_AND_RESET(child);
63 if (ret) {
64 goto end;
65 }
66 }
67 end:
68 return ret;
69 }
70
71 enum bt_ctf_visitor_object_type bt_ctf_visitor_object_get_type(
72 struct bt_ctf_visitor_object *object)
73 {
74 enum bt_ctf_visitor_object_type ret = BT_CTF_VISITOR_OBJECT_TYPE_UNKNOWN;
75
76 if (!object) {
77 goto end;
78 }
79
80 ret = object->type;
81 end:
82 return ret;
83 }
84
85 void *bt_ctf_visitor_object_get_object(struct bt_ctf_visitor_object *object)
86 {
87 void *ret = NULL;
88
89 if (!object) {
90 goto end;
91 }
92
93 ret = object->object;
94 end:
95 return ret;
96 }
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