# File lib/ruote/reader.rb, line 299
    def self.to_ra_string(o)

      return 'nil' if o == nil

      s = o.to_s

      return s if [ true, false ].include?(o)

      i = o.inspect

      return i if %w[ true false nil ].include?(s)
      return i if s.match(/[\s:]/)
      return s if i == "\"#{o.to_s}\""

      i
    end