You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: sexp.rb
    path of file: ./repos/truffleruby/lib/mri/ripper
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
#
# $Id$
#
# Copyright (c) 2004,2005 Minero Ao
    
  def Ripper.sexp_raw(src, filename = '-', lineno = 1, raise_errors: false)
    builder = SexpBuilder.new(src, filename, lineno)
    sexp = builder.parse
    if builder.error?
      if raise_errors
        raise SyntaxError, builder.error
      end