98 lines
2.2 KiB
Java
98 lines
2.2 KiB
Java
package org.bukkit.craftbukkit.util;
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.Set;
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public abstract class LazyHashSet<E> implements Set<E> {
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Set<E> reference = null;
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public int size() {
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return getReference().size();
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}
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public boolean isEmpty() {
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return getReference().isEmpty();
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}
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public boolean contains(Object o) {
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return getReference().contains(o);
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}
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public Iterator<E> iterator() {
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return getReference().iterator();
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}
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public Object[] toArray() {
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return getReference().toArray();
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}
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public <T> T[] toArray(T[] a) {
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return getReference().toArray(a);
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}
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public boolean add(E o) {
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return getReference().add(o);
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}
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public boolean remove(Object o) {
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return getReference().remove(o);
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}
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public boolean containsAll(Collection<?> c) {
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return getReference().containsAll(c);
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}
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public boolean addAll(Collection<? extends E> c) {
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return getReference().addAll(c);
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}
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public boolean retainAll(Collection<?> c) {
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return getReference().retainAll(c);
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}
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public boolean removeAll(Collection<?> c) {
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return getReference().removeAll(c);
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}
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public void clear() {
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getReference().clear();
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}
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public Set<E> getReference() {
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Set<E> reference = this.reference ;
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if (reference != null) {
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return reference;
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}
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return this.reference = makeReference();
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}
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abstract Set<E> makeReference();
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public boolean isLazy() {
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return reference == null;
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}
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@Override
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public int hashCode() {
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return 157 * getReference().hashCode();
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == this) {
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return true;
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}
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if (obj == null || this.getClass() != obj.getClass()) {
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return false;
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}
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LazyHashSet<?> that = (LazyHashSet<?>) obj;
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return (this.isLazy() && that.isLazy()) || this.getReference().equals(that.getReference());
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}
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@Override
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public String toString() {
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return getReference().toString();
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}
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}
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