Lucene.Net.Index.SegmentInfos.ApplyMergeChanges C# (CSharp) Метод

        internal void ApplyMergeChanges(MergePolicy.OneMerge merge, bool dropSegment)
        {
            var mergedAway = new HashSet<SegmentCommitInfo>(merge.Segments);
            bool inserted = false;
            int newSegIdx = 0;
            for (int segIdx = 0, cnt = segments.Count; segIdx < cnt; segIdx++)
            {
                Debug.Assert(segIdx >= newSegIdx);
                SegmentCommitInfo info = segments[segIdx];
                if (mergedAway.Contains(info))
                {
                    if (!inserted && !dropSegment)
                    {
                        segments[segIdx] = merge.Info_Renamed;
                        inserted = true;
                        newSegIdx++;
                    }
                }
                else
                {
                    segments[newSegIdx] = info;
                    newSegIdx++;
                }
            }

            // the rest of the segments in list are duplicates, so don't remove from map, only list!
            segments.SubList(newSegIdx, segments.Count).Clear();

            // Either we found place to insert segment, or, we did
            // not, but only because all segments we merged becamee
            // deleted while we are merging, in which case it should
            // be the case that the new segment is also all deleted,
            // we insert it at the beginning if it should not be dropped:
            if (!inserted && !dropSegment)
            {
                segments.Insert(0, merge.Info_Renamed);
            }
        }