Examples with ImmutableMultiset com.google.common.collect.ImmutableMultiset used on opensource projects

Example 1 with ImmutableMultiset

use of com.google.common.collect.ImmutableMultiset in project Terasology by MovingBlocks.

the class ConstructorLibrary method getCollectionCopyConstructor.

public static <E> CollectionCopyConstructor<? extends Collection<E>, E> getCollectionCopyConstructor(TypeInfo<? extends Collection<E>> typeInfo) {
    Class<? extends Collection<E>> rawType = typeInfo.getRawType();
    Type type = typeInfo.getType();
    if (Multiset.class.isAssignableFrom(rawType)) {
        if (ImmutableMultiset.class.isAssignableFrom(rawType)) {
            return ImmutableMultiset::copyOf;
        }
        return HashMultiset::create;
    }
    if (SortedSet.class.isAssignableFrom(rawType)) {
        if (ImmutableSortedSet.class.isAssignableFrom(rawType)) {
            return ImmutableSortedSet::copyOf;
        }
        return TreeSet::new;
    }
    if (EnumSet.class.isAssignableFrom(rawType)) {
        return (items) -> {
            if (!(type instanceof ParameterizedType)) {
                throw new IllegalArgumentException("Invalid EnumSet type: " + type.toString());
            }
            Type elementType = ((ParameterizedType) type).getActualTypeArguments()[0];
            if (!(elementType instanceof Class)) {
                throw new IllegalArgumentException("Invalid EnumSet type: " + type.toString());
            }
            return EnumSet.copyOf((Collection) items);
        };
    }
    if (Set.class.isAssignableFrom(rawType)) {
        if (ImmutableSet.class.isAssignableFrom(rawType)) {
            return ImmutableSet::copyOf;
        }
        return LinkedHashSet::new;
    }
    if (Queue.class.isAssignableFrom(rawType)) {
        return ArrayDeque::new;
    }
    if (ImmutableList.class.isAssignableFrom(rawType)) {
        return ImmutableList::copyOf;
    }
    return ArrayList::new;
}