private static Node compare()

in tools/javac/ApiComparator.java [300:329]

• 30 lines of code
• 7 McCabe index (conditional complexity)

    private static <T> Node compare(Map<T, T> a, Map<T, T> b, BiFunction<T, T, Node> comparator, Node next) {
        Node node = next;
        if (a == null) {
            for (T bt : b.values()) {
                Node n = comparator.apply(null, bt);
                n.next = node;
                node = n;
            }
        } else if (b == null) {
            for (T at : a.values()) {
                Node n = comparator.apply(at, null);
                n.next = node;
                node = n;
            }
        } else {
            Map<T, T> aTypes = new HashMap<>(a);
            for (T bt : b.values()) {
                T at = aTypes.remove(bt);
                Node n = comparator.apply(at, bt);
                n.next = node;
                node = n;
            }
            for (T at : aTypes.values()) {
                Node n = comparator.apply(at, null);
                n.next = node;
                node = n;
            }
        }
        return node;
    }