class Tilt::MarkabyTemplate

def evaluate(scope, locals, &block)
  builder = self.class.builder_class.new({}, scope)
  builder.locals = locals
  if data.kind_of? Proc
    (class << builder; self end).send(:define_method, :__run_markaby_tilt__, &data)
  else
    builder.instance_eval <<-CODE, __FILE__, __LINE__
      def __run_markaby_tilt__
        #{data}
      end
    CODE
  end
  if block
    builder.__capture_markaby_tilt__(&block)
  else
    builder.__run_markaby_tilt__
  end
  builder.to_s
end