return new_field;
}
+struct bt_ctf_field *bt_ctf_field_variant_get_current_field(
+ struct bt_ctf_field *variant_field)
+{
+ struct bt_ctf_field *current_field = NULL;
+ struct bt_ctf_field_variant *variant;
+
+ if (!variant_field ||
+ bt_ctf_field_type_get_type_id(variant_field->type) !=
+ CTF_TYPE_VARIANT) {
+ goto end;
+ }
+
+ variant = container_of(variant_field, struct bt_ctf_field_variant,
+ parent);
+
+ if (variant->payload) {
+ current_field = variant->payload;
+ bt_ctf_field_get(current_field);
+ goto end;
+ }
+
+end:
+ return current_field;
+}
+
struct bt_ctf_field *bt_ctf_field_enumeration_get_container(
struct bt_ctf_field *field)
{
extern struct bt_ctf_field *bt_ctf_field_variant_get_field(
struct bt_ctf_field *variant, struct bt_ctf_field *tag);
+/*
+ * bt_ctf_field_variant_get_current_field: get the current selected field of a
+ * variant.
+ *
+ * Return the variant's current selected field. This function, unlike
+ * bt_ctf_field_variant_get_field(), does not create any field; it
+ * returns NULL if there's no current selected field yet.
+ *
+ * @param variant Variant field instance.
+ *
+ * Returns a field instance on success, NULL on error or when there's no
+ * current selected field.
+ */
+extern struct bt_ctf_field *bt_ctf_field_variant_get_current_field(
+ struct bt_ctf_field *variant);
+
/*
* bt_ctf_field_enumeration_get_container: get an enumeration field's container.
*