Support for attaching extra information to AST nodes

vidarh · Nov 2, 2013 · afdcd99 · afdcd99
1 parent 13699f4
commit afdcd99
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/ast.rb b/ast.rb
@@ -53,6 +53,10 @@ def concat(other)
       update_position
       return self
     end
+
+    def extra
+      @extra ||= {}
+    end
   end
 
   # For convenience