top and limit can be visited

lib/arel/visitors/depth_first.rb

@@ -18,9 +18,11 @@ def unary o
       alias :visit_Arel_Nodes_Group             :unary
       alias :visit_Arel_Nodes_Grouping          :unary
       alias :visit_Arel_Nodes_Having            :unary
+      alias :visit_Arel_Nodes_Limit             :unary
       alias :visit_Arel_Nodes_Not               :unary
       alias :visit_Arel_Nodes_Offset            :unary
       alias :visit_Arel_Nodes_On                :unary
+      alias :visit_Arel_Nodes_Top               :unary
       alias :visit_Arel_Nodes_UnqualifiedColumn :unary
 
       def function o

lib/arel/visitors/dot.rb

@@ -75,9 +75,11 @@ def unary o
       alias :visit_Arel_Nodes_Group             :unary
       alias :visit_Arel_Nodes_Grouping          :unary
       alias :visit_Arel_Nodes_Having            :unary
+      alias :visit_Arel_Nodes_Limit             :unary
       alias :visit_Arel_Nodes_Not               :unary
       alias :visit_Arel_Nodes_Offset            :unary
       alias :visit_Arel_Nodes_On                :unary
+      alias :visit_Arel_Nodes_Top               :unary
       alias :visit_Arel_Nodes_UnqualifiedColumn :unary
 
       def visit_Arel_Nodes_InsertStatement o

test/visitors/test_depth_first.rb

@@ -31,6 +31,8 @@ def test_raises_with_object
         Arel::Nodes::Having,
         Arel::Nodes::StringJoin,
         Arel::Nodes::UnqualifiedColumn,
+        Arel::Nodes::Top,
+        Arel::Nodes::Limit,
       ].each do |klass|
         define_method("test_#{klass.name.gsub('::', '_')}") do
           op = klass.new(:a)

test/visitors/test_dot.rb

@@ -16,6 +16,8 @@ def setup
         Arel::Nodes::Offset,
         Arel::Nodes::Having,
         Arel::Nodes::UnqualifiedColumn,
+        Arel::Nodes::Top,
+        Arel::Nodes::Limit,
       ].each do |klass|
         define_method("test_#{klass.name.gsub('::', '_')}") do
           op = klass.new(:a)