1 files changed, 19 insertions, 0 deletions
diff --git a/lib/arel/visitors/visitor.rb b/lib/arel/visitors/visitor.rb
new file mode 100644
index 0000000000..510d50399b
--- /dev/null
+++ b/lib/arel/visitors/visitor.rb
@@ -0,0 +1,19 @@
+module Arel
+  module Visitors
+    class Visitor
+      def accept object
+        visit object
+      end
+
+      private
+
+      DISPATCH = Hash.new do |hash, klass|
+        hash[klass] = "visit_#{klass.name.gsub('::', '_')}"
+      end
+
+      def visit object
+        send DISPATCH[object.class], object
+      end
+    end
+  end
+end