# File lib/safe_eval.rb, line 14
  def initialize(safe=3, collect=true)
    @safe = safe
    @collect = collect
  end

# File lib/safe_eval.rb, line 19
  def run(code_str='', binding=nil, filename='(SafeEval)', lineno=1)
    binding = yield if block_given?
    lineno -= 1
    @output = nil
    @output = [] if @collect
    result = nil
    code_str.strip!
    return result if code_str.empty?
    rd_result, wr_result = IO.pipe
    open('|-') do |io|
      if io.nil? then # son
        status = 0
        rd_result.close
        set_environment
        begin
          code = "$SAFE = #@safe\n#{code_str}"
          result = eval(code, binding, filename, lineno)
          status = 0 # needed if the user change the status
        rescue Exception => exception
          status = 1
          result = exception
        ensure
          Marshal.dump(result, wr_result)
          wr_result.close
          exit!(status)
        end
      else # father
        wr_result.close
        io.each_line { |l| @output << l.chomp } if @collect
        result = Marshal.load(rd_result)
        rd_result.close
        Process.waitpid(io.pid)
      end
    end
    raise result if $?.exitstatus == 1
    @output = nil unless @collect
    return result
  end

# File lib/safe_eval.rb, line 60
  def set_environment
  end