System.Xml.Schema.ParticleContentValidator.CheckCMUPAWithLeafRangeNodes C# (CSharp) Method

        private void CheckCMUPAWithLeafRangeNodes(BitSet curpos) {
            object[] symbolMatches = new object[symbols.Count];
            for (int pos = curpos.NextSet(-1); pos != -1; pos = curpos.NextSet(pos)) {
                Position currentPosition = positions[pos];
                int symbol = currentPosition.symbol;
                if (symbol >= 0) { //its not a range position
                    if (symbolMatches[symbol] != null) {
                        throw new UpaException(symbolMatches[symbol], currentPosition.particle);
                    }
                    else {
                        symbolMatches[symbol] = currentPosition.particle;
                    }
                }
            }
        }