class RDoc::Markup::ToHtmlCrossref

def convert_flow(flow)
  res = []
  i = 0
  while i < flow.size
    item = flow[i]
    i += 1
    case item
    when RDoc::Markup::AttrChanger then
      # Make "+Class#method+" a cross reference
      if tt_tag?(item.turn_on) and
        String === (str = flow[i]) and
        RDoc::Markup::AttrChanger === flow[i+1] and
        tt_tag?(flow[i+1].turn_off, true) and
        (@options.hyperlink_all ? ALL_CROSSREF_REGEXP : CROSSREF_REGEXP).match?(str) and
        (text = cross_reference str) != str
      then
        text = yield text, res if defined?(yield)
        res << text
        i += 2
        next
      end
      off_tags res, item
      on_tags res, item
    when String then
      text = convert_string(item)
      text = yield text, res if defined?(yield)
      res << text
    when RDoc::Markup::RegexpHandling then
      text = convert_regexp_handling(item)
      text = yield text, res if defined?(yield)
      res << text
    else
      raise "Unknown flow element: #{item.inspect}"
    end
  end
  res.join('')
end