class Tilt::HamlTemplate

def prepare
  options = {}.update(@options).update(filename: eval_file, line: line)
  if options.include?(:outvar)
    options[:buffer] = options.delete(:outvar)
    options[:save_buffer] = true
  end
  @engine = ::Haml::TempleEngine.new(options)
  @engine.compile(data)
end