Augmentation.java 文件源码

/**
 * Finds all values matching the predicate, returns as a map.
 */
public static <K,V> Map<K,V> findAll(Map<K,V> receiver, BiPredicate<K,V> predicate) {
    // try to preserve some properties of the receiver (see the groovy javadocs)
    final Map<K,V> map;
    if (receiver instanceof TreeMap) {
        map = new TreeMap<>();
    } else {
        map = new LinkedHashMap<>();
    }
    for (Map.Entry<K,V> kvPair : receiver.entrySet()) {
        if (predicate.test(kvPair.getKey(), kvPair.getValue())) {
            map.put(kvPair.getKey(), kvPair.getValue());
        }
    }
    return map;
}