parse_call_parameters

# File lib/rdoc/parser/ruby.rb, line 505
  def parse_call_parameters(tk)
    end_token = case tk
                when TkLPAREN, TkfLPAREN
                  TkRPAREN
                when TkRPAREN
                  return ""
                else
                  TkNL
                end
    nest = 0

    loop do
      case tk
      when TkSEMICOLON
        break
      when TkLPAREN, TkfLPAREN
        nest += 1
      when end_token
        if end_token == TkRPAREN
          nest -= 1
          break if @scanner.lex_state == EXPR_END and nest <= 0
        else
          break unless @scanner.continue
        end
      when TkCOMMENT, TkASSIGN, TkOPASGN
        unget_tk(tk)
        break
      when nil then
        break
      end
      tk = get_tk
    end
    res = get_tkread.tr("\n", " ").strip
    res = "" if res == ";"
    res
  end