clean: make some classes abstract or interfaces

[nit.git] / src / parser / xss / nodes.xss

diff --git a/src/parser/xss/nodes.xss b/src/parser/xss/nodes.xss
index e5eb9da..a07d4ef 100644 (file)
--- a/src/parser/xss/nodes.xss
+++ b/src/parser/xss/nodes.xss
@@ -79,7 +79,7 @@ redef class Prod
 end
 
 # Abstract standard visitor
-class Visitor
+abstract class Visitor
        # What the visitor do when a node is visited
         # Concrete visitors should redefine this method.
         protected fun visit(e: nullable PNode) is abstract