[repack] Add add_link helper to graph.
diff --git a/src/graph/graph.hh b/src/graph/graph.hh
index 85623c2..cd95fe0 100644
--- a/src/graph/graph.hh
+++ b/src/graph/graph.hh
@@ -241,6 +241,22 @@
}
/*
+ * Adds a 16 bit link from parent_id to child_id
+ */
+ template<typename T>
+ void add_link (T* offset,
+ unsigned parent_id,
+ unsigned child_id)
+ {
+ auto& v = vertices_[parent_id];
+ auto* link = v.obj.real_links.push ();
+ link->width = 2;
+ link->objidx = child_id;
+ link->position = (char*) offset - (char*) v.obj.head;
+ vertices_[child_id].parents.push (parent_id);
+ }
+
+ /*
* Generates a new topological sorting of graph ordered by the shortest
* distance to each node if positions are marked as invalid.
*/
