1 files changed, 3 insertions, 14 deletions
diff --git a/lib/arel/visitors/depth_first.rb b/lib/arel/visitors/depth_first.rb
index 458934f854..4d2ecfa5e1 100644
--- a/lib/arel/visitors/depth_first.rb
+++ b/lib/arel/visitors/depth_first.rb
@@ -5,22 +5,11 @@ module Arel
         @block = block || Proc.new
       end
 
-      def accept object
-        visit object
-      end
-
       private
 
-      def visit object
-        send dispatch[object.class], object
-      rescue NoMethodError => e
-        raise e if respond_to?(dispatch[object.class], true)
-        superklass = object.class.ancestors.find { |klass|
-          respond_to?(dispatch[klass], true)
-        }
-        raise(TypeError, "Cannot visit #{object.class}") unless superklass
-        dispatch[object.class] = dispatch[superklass]
-        retry
+      def visit o
+        super
+        @block.call o
       end
 
       def unary o