nitcc_rt: make the depth visitor lazy

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/lib/nitcc_runtime.nit b/lib/nitcc_runtime.nit
index d74e246..a85b22b 100644 (file)
--- a/lib/nitcc_runtime.nit
+++ b/lib/nitcc_runtime.nit
@@ -343,7 +343,7 @@ abstract class Node
        fun children: SequenceRead[nullable Node] is abstract
 
        # A point of view of a depth-first visit of all non-null children
-       var depth: Collection[Node] = new DephCollection(self)
+       var depth: Collection[Node] = new DephCollection(self) is lazy
 
        # Visit all the children of the node with the visitor `v`
        protected fun visit_children(v: Visitor)