Add CTF-IR visitor interface

[babeltrace.git] / formats / ctf / ir / stream-class.c

diff --git a/formats/ctf/ir/stream-class.c b/formats/ctf/ir/stream-class.c
index 326e759e23d926769267739a9118af7c95c49bde..cddbb97968b7c9523af201f58375e62faed4de5d 100644 (file)
--- a/formats/ctf/ir/stream-class.c
+++ b/formats/ctf/ir/stream-class.c
@@ -36,6 +36,7 @@
 #include <babeltrace/ctf-writer/stream.h>
 #include <babeltrace/ctf-ir/stream-class-internal.h>
 #include <babeltrace/ctf-ir/validation-internal.h>
+#include <babeltrace/ctf-ir/visitor-internal.h>
 #include <babeltrace/ctf-writer/functor-internal.h>
 #include <babeltrace/ctf-ir/utils.h>
 #include <babeltrace/ref.h>
@@ -697,6 +698,50 @@ void bt_ctf_stream_class_put(struct bt_ctf_stream_class *stream_class)
        bt_put(stream_class);
 }
 
+static
+int get_event_class_count(void *element)
+{
+       return bt_ctf_stream_class_get_event_class_count(
+                       (struct bt_ctf_stream_class *) element);
+}
+
+static
+void *get_event_class(void *element, int i)
+{
+       return bt_ctf_stream_class_get_event_class(
+                       (struct bt_ctf_stream_class *) element, i);
+}
+
+static
+int visit_event_class(void *element, bt_ctf_ir_visitor visitor,void *data)
+{
+       struct bt_ctf_ir_element ir_element =
+                       { .element = element,
+                       .type = BT_CTF_IR_TYPE_EVENT_CLASS };
+
+       return visitor(&ir_element, data);
+}
+
+int bt_ctf_stream_class_visit(struct bt_ctf_stream_class *stream_class,
+               bt_ctf_ir_visitor visitor, void *data)
+{
+       int ret;
+       struct bt_ctf_ir_element element =
+                       { .element = stream_class,
+                       .type = BT_CTF_IR_TYPE_STREAM_CLASS };
+
+       if (!stream_class || !visitor) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = visitor_helper(&element, get_event_class_count,
+                       get_event_class,
+                       visit_event_class, visitor, data);
+end:
+       return ret;
+}
+
 BT_HIDDEN
 void bt_ctf_stream_class_freeze(struct bt_ctf_stream_class *stream_class)
 {