Class Maps

src/main/java/pascal/taie/util/collection/Maps.java:35–164

Static utility methods for various maps, including Map, MultiMap, and TwoKeyMap.

 * {@link MultiMap}, and {@link TwoKeyMap}.
 */
public final class Maps {

    private Maps() {
    }

    public static <K, V> Map<K, V> ofLinkedHashMap(K k1, V v1, K k2, V v2) {
        Map<K, V> map = new LinkedHashMap<>(2);
        map.put(k1, v1);
        map.put(k2, v2);
        return Collections.unmodifiableMap(map);
    }

    public static <K, V> Map<K, V> newMap() {
        return new HashMap<>();
    }

    public static <K, V> Map<K, V> newMap(int initialCapacity) {
        if (initialCapacity <= ArrayMap.DEFAULT_CAPACITY) {
            return newSmallMap();
        } else {
            return newMap();
        }
    }

    public static <K, V> Map<K, V> newLinkedHashMap() {
        return new LinkedHashMap<>();
    }

    public static <K extends Comparable<K>, V> Map<K, V> newOrderedMap() {
        return new TreeMap<>();
    }

    public static <K, V> Map<K, V> newOrderedMap(Comparator<? super K> comparator) {
        return new TreeMap<>(comparator);
    }

    public static <K, V> Map<K, V> newSmallMap() {
        return new ArrayMap<>();
    }

    public static <K, V> Map<K, V> newHybridMap() {
        return new HybridHashMap<>();
    }

    public static <K, V> Map<K, V> newHybridMap(Map<K, V> map) {
        return new HybridHashMap<>(map);
    }

    public static <K, V> ConcurrentMap<K, V> newConcurrentMap() {
        return new ConcurrentHashMap<>();
    }

    public static <K, V> ConcurrentMap<K, V> newConcurrentMap(int initialCapacity) {
        return new ConcurrentHashMap<>(initialCapacity);
    }

    public static <K, V> MultiMap<K, V> newMultiMap(Map<K, Set<V>> map,
                                                    SSupplier<Set<V>> setFactory) {