* {@inheritDoc}
*/
@Override
public boolean incrementToken() throws IOException {
if (buffer != null && !buffer.isEmpty()) {
Stem nextStem = buffer.remove(0);
restoreState(savedState);
posIncAtt.setPositionIncrement(0);
termAtt.copyBuffer(nextStem.getStem(), 0, nextStem.getStemLength());
termAtt.setLength(nextStem.getStemLength());
return true;
}
if (!input.incrementToken()) {
return false;
}
if (keywordAtt.isKeyword()) {
return true;
}
buffer = dedup ? stemmer.uniqueStems(termAtt.buffer(), termAtt.length()) : stemmer.stem(termAtt.buffer(), termAtt.length());
if (buffer.isEmpty()) { // we do not know this word, return it unchanged
return true;
}
Stem stem = buffer.remove(0);
termAtt.copyBuffer(stem.getStem(), 0, stem.getStemLength());
termAtt.setLength(stem.getStemLength());
if (!buffer.isEmpty()) {
savedState = captureState();
}