Lucene.Net.Analysis.Hunspell.HunspellStemFilter.IncrementToken C# (CSharp) Method

        public override Boolean IncrementToken() {
            if (_buffer.Any()) {
                var nextStem = _buffer.Dequeue();

                RestoreState(_savedState);
                _posIncAtt.SetPositionIncrement(0);
                _termAtt.SetTermBuffer(nextStem.Stem, 0, nextStem.StemLength);
                return true;
            }

            if (!input.IncrementToken())
                return false;

            var newTerms = _dedup
                               ? _stemmer.UniqueStems(_termAtt.Term())
                               : _stemmer.Stem(_termAtt.Term());
            foreach (var newTerm in newTerms)
                _buffer.Enqueue(newTerm);

            if (_buffer.Count == 0)
                // we do not know this word, return it unchanged
                return true;

            var stem = _buffer.Dequeue();
            _termAtt.SetTermBuffer(stem.Stem, 0, stem.StemLength);

            if (_buffer.Count > 0)
                _savedState = CaptureState();

            return true;
        }