src/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/object.h>
  30
  31 #include "common/babeltrace.h"
  32
  33 #include "visitor.h"
  34
  35 BT_HIDDEN
  36 int bt_ctf_visitor_helper(struct bt_ctf_visitor_object *root,
  37                 bt_ctf_child_count_accessor child_counter,
  38                 bt_ctf_child_accessor child_accessor,
  39                 bt_ctf_child_visitor child_visitor,
  40                 bt_ctf_visitor visitor,
  41                 void *data)
  42 {
  43         int ret, child_count, i;
  44
  45         ret = visitor(root, data);
  46         if (ret) {
  47                 goto end;
  48         }
  49
  50         child_count = child_counter(root->object);
  51         if (child_count < 0) {
  52                 ret = child_count;
  53                 goto end;
  54         }
  55
  56         for (i = 0; i < child_count; i++) {
  57                 void *child;
  58
  59                 child = child_accessor(root->object, i);
  60                 if (!child) {
  61                         ret = -1;
  62                         goto end;
  63                 }
  64                 ret = child_visitor(child, visitor, data);
  65                 BT_CTF_OBJECT_PUT_REF_AND_RESET(child);
  66                 if (ret) {
  67                         goto end;
  68                 }
  69         }
  70 end:
  71         return ret;
  72 }
  73
  74 enum bt_ctf_visitor_object_type bt_ctf_visitor_object_get_type(
  75                 struct bt_ctf_visitor_object *object)
  76 {
  77         enum bt_ctf_visitor_object_type ret = BT_CTF_VISITOR_OBJECT_TYPE_UNKNOWN;
  78
  79         if (!object) {
  80                 goto end;
  81         }
  82
  83         ret = object->type;
  84 end:
  85         return ret;
  86 }
  87
  88 void *bt_ctf_visitor_object_get_object(struct bt_ctf_visitor_object *object)
  89 {
  90         void *ret = NULL;
  91
  92         if (!object) {
  93                 goto end;
  94         }
  95
  96         ret = object->object;
  97 end:
  98         return ret;
  99 }