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The Adobe Experience Manager SDK
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/*
 * Copyright (C) 2009 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.common.collect;

import com.google.common.annotations.GwtCompatible;
import java.io.Serializable;
import java.util.Collection;
import java.util.EnumSet;

/**
 *  Implementation of {@link ImmutableSet} backed by a non-empty {@link
 *  java.util.EnumSet}.
 *
 *  @author Jared Levy
 *
 * @deprecated The Google Guava Core Libraries are deprecated and will not be part of the AEM SDK after April 2023
 */
@GwtCompatible(serializable = true, emulated = true)
// we're overriding default serialization
@SuppressWarnings("serial")
@Deprecated(since = "2022-12-01")
final class ImmutableEnumSet> extends ImmutableSet {

    static > ImmutableSet asImmutable(EnumSet set) {
        switch(set.size()) {
            case 0:
                return ImmutableSet.of();
            case 1:
                return ImmutableSet.of(Iterables.getOnlyElement(set));
            default:
                return new ImmutableEnumSet(set);
        }
    }

    /*
   * Notes on EnumSet and >:
   *
   * This class isn't an arbitrary ForwardingImmutableSet because we need to
   * know that calling {@code clone()} during deserialization will return an
   * object that no one else has a reference to, allowing us to guarantee
   * immutability. Hence, we support only {@link EnumSet}.
   */
    private final transient EnumSet delegate;

    private ImmutableEnumSet(EnumSet delegate) {
        this.delegate = delegate;
    }

    @Override
    boolean isPartialView() {
        return false;
    }

    @Override
    public UnmodifiableIterator iterator() {
        return Iterators.unmodifiableIterator(delegate.iterator());
    }

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

    @Override
    public boolean contains(Object object) {
        return delegate.contains(object);
    }

    @Override
    public boolean containsAll(Collection collection) {
        return delegate.containsAll(collection);
    }

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

    @Override
    public boolean equals(Object object) {
        return object == this || delegate.equals(object);
    }

    private transient int hashCode;

    @Override
    public int hashCode() {
        int result = hashCode;
        return (result == 0) ? hashCode = delegate.hashCode() : result;
    }

    @Override
    public String toString() {
        return delegate.toString();
    }

    // All callers of the constructor are restricted to >.
    @Override
    Object writeReplace() {
        return new EnumSerializedForm(delegate);
    }

    /*
   * This class is used to serialize ImmutableEnumSet instances.
   
@deprecated The Google Guava Core Libraries are deprecated and will not be part of the AEM SDK after April 2023*/
    @Deprecated(since = "2022-12-01")
    private static class EnumSerializedForm> implements Serializable {

        final EnumSet delegate;

        EnumSerializedForm(EnumSet delegate) {
            this.delegate = delegate;
        }

        Object readResolve() {
            // EJ2 #76: Write readObject() methods defensively.
            return new ImmutableEnumSet(delegate.clone());
        }

        private static final long serialVersionUID = 0;
    }
}