Lucene.Net.Analysis.ChainedFilter.GetDocIdSet C# (CSharp) Method

        public override DocIdSet GetDocIdSet(IndexReader reader)
        {
            int[] index = new int[1]; // use array as reference to modifiable int; 
            index[0] = 0;             // an object attribute would not be thread safe.
            if (logic != Logic.NONE)
                return GetDocIdSet(reader, logic, index);
            else if (logicArray != null)
                return GetDocIdSet(reader, logicArray, index);
            else
                return GetDocIdSet(reader, DEFAULT, index);
        }