Xinwen Deng / aem-src

/*
 * Decompiled with CFR 0_118.
 */
package com.adobe.internal.util;

import java.util.AbstractSet;
import java.util.Collection;
import java.util.Iterator;
import java.util.Set;
import java.util.WeakHashMap;

public class WeakHashSet
extends AbstractSet
implements Set {
    private transient WeakHashMap map;
    private static final Object dummy = new Object();

    public WeakHashSet() {
        this.map = new WeakHashMap();
    }

    public WeakHashSet(Collection c) {
        this.map = new WeakHashMap(Math.max((int)((float)c.size() / 0.75f) + 1, 16));
        this.addAll(c);
    }

    public WeakHashSet(int initialCapacity, float loadFactor) {
        this.map = new WeakHashMap(initialCapacity, loadFactor);
    }

    public WeakHashSet(int initialCapacity) {
        this.map = new WeakHashMap(initialCapacity);
    }

    @Override
    public Iterator iterator() {
        return this.map.keySet().iterator();
    }

    @Override
    public int size() {
        return this.map.size();
    }

    @Override
    public boolean isEmpty() {
        return this.map.isEmpty();
    }

    @Override
    public boolean contains(Object obj) {
        return this.map.containsKey(obj);
    }

    @Override
    public boolean add(Object obj) {
        return this.map.put(obj, dummy) == null;
    }

    @Override
    public boolean remove(Object obj) {
        return this.map.remove(obj) == dummy;
    }

    @Override
    public void clear() {
        this.map.clear();
    }
}