while (sm.find()) {
if (index == null) index = new LineNumberIndex(str);
final int off = sm.getStart();
final int lineOffset = index.getLineNumber(off);
final String line = index.getLine(off);
final StringMatch match = new StringMatch(file, line, lineOffset, off);
visitor.found(match);
}
} catch (IOException e) {
e.printStackTrace();
}