class RDoc::Parser::Ruby

def parse_call_parameters(tk)
  end_token = case tk[:kind]
              when :on_lparen
                :on_rparen
              when :on_rparen
                return ""
              else
                :on_nl
              end
  nest = 0
  loop do
    break if tk.nil?
    case tk[:kind]
    when :on_semicolon
      break
    when :on_lparen
      nest += 1
    when end_token
      if end_token == :on_rparen
        nest -= 1
        break if RDoc::Parser::RipperStateLex.end?(tk) and nest <= 0
      else
        break if RDoc::Parser::RipperStateLex.end?(tk)
      end
    when :on_comment, :on_embdoc
      unget_tk(tk)
      break
    when :on_op
      if tk[:text] =~ /^(.{1,2})?=$/
        unget_tk(tk)
        break
      end
    end
    tk = get_tk
  end
  get_tkread_clean "\n", " "
end