From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Mon, 11 May 2015 21:24:24 +0000 (-0400)
Subject: ir: add bt_ctf_field_path internal API
X-Git-Tag: v2.0.0-pre1~1248
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=6b64f18523958d5dfbbbb00b17f6028b1eeb24ce

ir: add bt_ctf_field_path internal API

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/formats/ctf/ir/event-types.c b/formats/ctf/ir/event-types.c
index 9b78c0db..9a8ce896 100644
--- a/formats/ctf/ir/event-types.c
+++ b/formats/ctf/ir/event-types.c
@@ -1955,6 +1955,56 @@ end:
 	return copy;
 }
 
+BT_HIDDEN
+struct bt_ctf_field_path *bt_ctf_field_path_create(void)
+{
+	struct bt_ctf_field_path *field_path = NULL;
+
+	field_path = g_new0(struct bt_ctf_field_path, 1);
+	if (!field_path) {
+		goto end;
+	}
+
+	field_path->root = CTF_NODE_UNKNOWN;
+	field_path->path_indexes = g_array_new(TRUE, FALSE, sizeof(int));
+	if (!field_path->path_indexes) {
+		bt_ctf_field_path_destroy(field_path);
+		field_path = NULL;
+	}
+end:
+	return field_path;
+}
+
+
+BT_HIDDEN
+struct bt_ctf_field_path *bt_ctf_field_path_copy(
+		struct bt_ctf_field_path *path)
+{
+	struct bt_ctf_field_path *new_path = bt_ctf_field_path_create();
+
+	if (!new_path) {
+		goto end;
+	}
+
+	new_path->root = path->root;
+	g_array_insert_vals(new_path->path_indexes, 0,
+		path->path_indexes->data, path->path_indexes->len);
+end:
+	return new_path;
+}
+
+BT_HIDDEN
+void bt_ctf_field_path_destroy(struct bt_ctf_field_path *path)
+{
+	if (!path) {
+		return;
+	}
+
+	if (path->path_indexes) {
+		g_array_free(path->path_indexes, TRUE);
+	}
+	g_free(path);
+}
 
 BT_HIDDEN
 int bt_ctf_field_type_structure_get_field_name_index(
diff --git a/include/babeltrace/ctf-ir/event-types-internal.h b/include/babeltrace/ctf-ir/event-types-internal.h
index 8ae102b0..b420a579 100644
--- a/include/babeltrace/ctf-ir/event-types-internal.h
+++ b/include/babeltrace/ctf-ir/event-types-internal.h
@@ -41,6 +41,26 @@ typedef void (*type_freeze_func)(struct bt_ctf_field_type *);
 typedef int (*type_serialize_func)(struct bt_ctf_field_type *,
 		struct metadata_context *);
 
+enum bt_ctf_node {
+	CTF_NODE_UNKNOWN = -1,
+	CTF_NODE_ENV = 0,
+	CTF_NODE_TRACE_PACKET_HEADER = 1,
+	CTF_NODE_STREAM_PACKET_CONTEXT = 2,
+	CTF_NODE_STREAM_EVENT_HEADER = 3,
+	CTF_NODE_STREAM_EVENT_CONTEXT = 4,
+	CTF_NODE_EVENT_CONTEXT = 5,
+	CTF_NODE_EVENT_FIELDS = 6,
+};
+
+struct bt_ctf_field_path {
+	enum bt_ctf_node root;
+	/*
+	 * Array of integers (int) indicating the index in either
+	 * structures or variants that make-up the path to a field.
+	 */
+	GArray *path_indexes;
+};
+
 struct bt_ctf_field_type {
 	struct bt_ctf_ref ref_count;
 	struct bt_declaration *declaration;
@@ -165,6 +185,15 @@ BT_HIDDEN
 struct bt_ctf_field_type *bt_ctf_field_type_copy(
 		struct bt_ctf_field_type *type);
 
+BT_HIDDEN
+struct bt_ctf_field_path *bt_ctf_field_path_create(void);
+
+BT_HIDDEN
+struct bt_ctf_field_path *bt_ctf_field_path_copy(
+		struct bt_ctf_field_path *path);
+
+BT_HIDDEN
+void bt_ctf_field_path_destroy(struct bt_ctf_field_path *path);
 
 BT_HIDDEN
 int bt_ctf_field_type_structure_get_field_name_index(