System.Xml.Xsl.XsltOld.Compiler.GetNextAvtLex C# (CSharp) Method

        private static bool GetNextAvtLex(string avt, ref int start, StringBuilder lex, out bool isAvt)
        {
            Debug.Assert(start <= avt.Length);
#if DEBUG
            int saveStart = start;
#endif
            isAvt = false;
            if (start == avt.Length)
            {
                return false;
            }
            lex.Length = 0;
            getTextLex(avt, ref start, lex);
            if (lex.Length == 0)
            {
                isAvt = true;
                getXPathLex(avt, ref start, lex);
            }
#if DEBUG
            Debug.Assert(saveStart < start, "We have to read something. Otherwise it's dead loop.");
#endif
            return true;
        }