# ensures compatibility with CanCan 1.5+ and 1.4-
module CanTango
  module PermitEngine
    module Compatibility
      def rules
        return rules_1_5 if rules_1_5
        return rules_1_4 if rules_1_4
        raise "CanCan ability.rules could not be found. Possibly due to CanCan API change since 1.5"
      end

      def rules_1_5
        ability.send :rules
      end

      def rules_1_4
        ability.send :can_definitions
      end
    end
  end
end