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: ruby-lex.rb
    path of file: ./repos/irb/lib/irb
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
#
#   irb/ruby-lex.rb - ruby lexcal analyzer
#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
#

require 
    
    def check_code_syntax(code, local_variables:)
      lvars_code = RubyLex.generate_local_variables_assign_code(local_variables)
      code = "#{lvars_code}\n#{code}"

      begin # check if parser error are available
        verbose, $VERBOSE = $VERBOSE, nil
        case RUBY_ENGINE
        when 'ruby'
          self.class.compile_with_errors_suppressed(code) do |inner_code, line_no|
            RubyVM::InstructionSequence.compile(inner_code, nil, nil, line_no)
          end
        when 'jruby'
          JRuby.compile_ir(code)
        else
          catch(:valid) do
            eval("BEGIN { throw :valid, true }\n#{code}")
            false
          end
        end