Delete unused method

Author: MightyHelper

.idea/workspace.xml

@@ -30,15 +30,15 @@ private static Rules doFactorization(Rules r, Set<Token> allTokens) {
 		return Utils.whileChanges(r, (rls)-> removeSingleFactorizationLayer(r, allTokens));
 	}
 
-	public static Rules removeSingleFactorizationLayer(Rules r, Set<Token> allTokens) {
+	static Rules removeSingleFactorizationLayer(Rules r, Set<Token> allTokens) {
 		Pair<Stream<Rule>, Stream<Rule>> commonPrefixedRules1 = getCommonPrefixedRules(r);
 		List<Rule> commonPrefixedRules = commonPrefixedRules1.l().toList();
 		List<Rule> notCommonPrefixedRules = commonPrefixedRules1.r().toList();
 		List<Rule> rules = commonPrefixedRules.stream().parallel().flatMap(rule -> solveLongestPrefix(r, rule, allTokens)).toList();
 		return new Rules(Utils.concat(rules, notCommonPrefixedRules)).simplify();
 	}
 
-	public static Rules bubbleUpAmbiguousRules(Rules r) {
+	private static Rules bubbleUpAmbiguousRules(Rules r) {
 		return Utils.whileChanges(r, Factorizer::singleBubblePass);
 	}
 
@@ -54,14 +54,6 @@ private static boolean willBubbleUpFix(Rules r, Rule rule) {
 		return isRuleAmbiguousAtAll(r, rule) && !hasMultiplePrefixes(rule);
 	}
 
-	public static boolean isRuleAmbiguous(Rules r, Rule rule) {
-		List<Set<Token>> firsts = rule.options().stream().parallel().map(to -> FirstCalculator.calculateFirst(to.tokens(), r)).peek(it -> it.remove(Token.LAMBDA)).toList();
-		// Test if the 'first' function of all the to-s are distinct
-		int totalSize = firsts.stream().map(Set::size).reduce(Integer::sum).orElse(0);
-		int distinctSize = firsts.stream().flatMap(Collection::stream).collect(Collectors.toSet()).size();
-		return totalSize != distinctSize;
-	}
-
 	private static Rule bubbleUpRule(Rule ambiguousRule, Rules r) {
 		// Calculate all possible pairs of to-s inside the ambiguousRule
 		List<Pair<To, To>> rulePairs = ambiguousRule.options().stream().parallel().flatMap(to1 -> ambiguousRule.options().stream().parallel().map(to2 -> new Pair<>(to1, to2))).toList();