module YARD::Templates::Helpers::HtmlSyntaxHighlightHelper

def html_syntax_highlight_ruby_legacy(source)
  tokenlist = Parser::Ruby::Legacy::TokenList.new(source)
  tokenlist.map do |s|
    prettyclass = s.class.class_name.sub(/^Tk/, '').downcase
    prettysuper = s.class.superclass.class_name.sub(/^Tk/, '').downcase
    case s
    when Parser::Ruby::Legacy::RubyToken::TkWhitespace, Parser::Ruby::Legacy::RubyToken::TkUnknownChar
      h s.text
    when Parser::Ruby::Legacy::RubyToken::TkId
      prettyval = h(s.text)
      "<span class='rubyid_#{prettyval} #{prettyclass} #{prettysuper}'>#{prettyval}</span>"
    else
      "<span class='#{prettyclass} #{prettysuper}'>#{h s.text}</span>"
    end
  end.join
end