natix.CompactDS.WTM.Rank C# (CSharp) Method

        public int Rank(int symbol, int position)
        {
            if (position < 0) {
                return 0;
            }
            var ministring = this.SymbolCoder.Encode(symbol, null);
            var node = this.Root;
            var mlen = ministring.Count;
            for (int i = 0; i < mlen; ++i) {
                var code = ministring[i];
                position = node.SEQ.Rank (code.symbol, position) - 1;
                if (i+1 < mlen) {
                    node = node.CHILDREN[code.symbol] as WTM_Inner;
                }
                if (node == null) {
                    return 0;
                }
            }
            return position + 1;
        }