Lucene.Net.QueryParsers.Surround.Parser.QueryParser.AndQuery C# (CSharp) Method

        public SrndQuery AndQuery()
        {
            SrndQuery q;
            IList<SrndQuery> queries = null;
            Token oprt = null;
            q = NotQuery();

            while (true)
            {
                switch ((jj_ntk == -1) ? Jj_ntk() : jj_ntk)
                {
                    case RegexpToken.AND:
                        ;
                        break;
                    default:
                        jj_la1[1] = jj_gen;
                        goto label_3;
                }
                oprt = Jj_consume_token(RegexpToken.AND);
                /* keep only last used operator */
                if (queries == null)
                {
                    queries = new List<SrndQuery>();
                    queries.Add(q);
                }
                q = NotQuery();
                queries.Add(q);
            }
        label_3:
            { if (true) return (queries == null) ? q : GetAndQuery(queries, true /* infix */, oprt); }
            throw new Exception("Missing return statement in function");
        }