# File lib/chef_zero/solr/solr_parser.rb, line 70
      def peek_operator_token
        if ['"', '+', '-', '!', '(', ')', '{', '}', '[', ']', '^', ':'].include?(@query_string[@index])
          return @query_string[@index]
        else
          result = @query_string[@index..@index+1]
          if ['&&', '||'].include?(result)
            return result
          end
        end
        nil
      end