private void changeRules(Rules rules) {
instance.rules = rules;
instance.preBmBc = BoyerMoore.preBmBc(rules);
instance.preBmGs = BoyerMoore.preBmGs(rules);
instance.suffixes = BoyerMoore.suffixes(rules);
preSkip = new HashMap<>();
rules.forEach(
rule -> {
preSkip.put(rule, new ArrayList<>(Collections.nCopies(rule.getLength(), 0)));
});
}
