System.Text.RegularExpressions.RegexInterpreter.SetOperator C# (CSharp) Method

        private void SetOperator(int op)
        {
            _caseInsensitive = (0 != (op & RegexCode.Ci));
            _rightToLeft = (0 != (op & RegexCode.Rtl));
            _operator = op & ~(RegexCode.Rtl | RegexCode.Ci);
        }