lib: fully detach CTF IR and CTF writer implementations

[babeltrace.git] / lib / ctf-writer / visitor.c

diff --git a/lib/ctf-writer/visitor.c b/lib/ctf-writer/visitor.c
new file mode 100644 (file)
index 0000000..726512c
--- /dev/null
+++ b/lib/ctf-writer/visitor.c
@@ -0,0 +1,96 @@
+/*
+ * visitor.c
+ *
+ * Babeltrace CTF writer - Visitor
+ *
+ * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <babeltrace/ctf-writer/visitor-internal.h>
+#include <babeltrace/ref.h>
+
+BT_HIDDEN
+int bt_ctf_visitor_helper(struct bt_ctf_visitor_object *root,
+               bt_ctf_child_count_accessor child_counter,
+               bt_ctf_child_accessor child_accessor,
+               bt_ctf_child_visitor child_visitor,
+               bt_ctf_visitor visitor,
+               void *data)
+{
+       int ret, child_count, i;
+
+       ret = visitor(root, data);
+       if (ret) {
+               goto end;
+       }
+
+       child_count = child_counter(root->object);
+       if (child_count < 0) {
+               ret = child_count;
+               goto end;
+       }
+
+       for (i = 0; i < child_count; i++) {
+               void *child;
+
+               child = child_accessor(root->object, i);
+               if (!child) {
+                       ret = -1;
+                       goto end;
+               }
+               ret = child_visitor(child, visitor, data);
+               BT_PUT(child);
+               if (ret) {
+                       goto end;
+               }
+       }
+end:
+       return ret;
+}
+
+enum bt_ctf_visitor_object_type bt_ctf_visitor_object_get_type(
+               struct bt_ctf_visitor_object *object)
+{
+       enum bt_ctf_visitor_object_type ret = BT_CTF_VISITOR_OBJECT_TYPE_UNKNOWN;
+
+       if (!object) {
+               goto end;
+       }
+
+       ret = object->type;
+end:
+       return ret;
+}
+
+void *bt_ctf_visitor_object_get_object(struct bt_ctf_visitor_object *object)
+{
+       void *ret = NULL;
+
+       if (!object) {
+               goto end;
+       }
+
+       ret = object->object;
+end:
+       return ret;
+}