Lucene.Net.Search.Spans.TestSpans.SpanCount C# (CSharp) Method

        private int SpanCount(string include, string exclude, int pre, int post)
        {
            SpanTermQuery iq = new SpanTermQuery(new Term(field, include));
            SpanTermQuery eq = new SpanTermQuery(new Term(field, exclude));
            SpanNotQuery snq = new SpanNotQuery(iq, eq, pre, post);
            Spans spans = MultiSpansWrapper.Wrap(Searcher.TopReaderContext, snq);

            int i = 0;
            while (spans.Next())
            {
                i++;
            }
            return i;
        }
    }