CalcEngine.CalcEngine.GetMember C# (CSharp) Метод

        Token GetMember()
        {
            // check whether next token is a MEMBER token ('.'),
            // restore state and bail if it's not
            var pos = _ptr;
            var tk = _token;
            GetToken();
            if (_token.ID != TKID.PERIOD)
            {
                _ptr = pos;
                _token = tk;
                return null;
            }

            // skip member token
            GetToken();
            if (_token.Type != TKTYPE.IDENTIFIER)
            {
                Throw("Identifier expected");
            }
            return _token;
        }