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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 com.google.common.base.Preconditions;
import javax.annotation.Nullable;

/**
 *  Implementation of {@link ImmutableList} with one or more elements.
 *
 *  @author Kevin Bourrillion
 *
 * @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)
// uses writeReplace(), not default serialization
@SuppressWarnings("serial")
// TODO(user): benchmark optimizations for equals() and see if they're worthwhile
@Deprecated(since = "2022-12-01")
class RegularImmutableList extends ImmutableList {

    private final transient int offset;

    private final transient int size;

    private final transient Object[] array;

    RegularImmutableList(Object[] array, int offset, int size) {
        this.offset = offset;
        this.size = size;
        this.array = array;
    }

    RegularImmutableList(Object[] array) {
        this(array, 0, array.length);
    }

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

    @Override
    boolean isPartialView() {
        return size != array.length;
    }

    @Override
    int copyIntoArray(Object[] dst, int dstOff) {
        System.arraycopy(array, offset, dst, dstOff, size);
        return dstOff + size;
    }

    // The fake cast to E is safe because the creation methods only allow E's
    @Override
    @SuppressWarnings("unchecked")
    public E get(int index) {
        Preconditions.checkElementIndex(index, size);
        return (E) array[index + offset];
    }

    @Override
    public int indexOf(@Nullable Object object) {
        if (object == null) {
            return -1;
        }
        for (int i = 0; i < size; i++) {
            if (array[offset + i].equals(object)) {
                return i;
            }
        }
        return -1;
    }

    @Override
    public int lastIndexOf(@Nullable Object object) {
        if (object == null) {
            return -1;
        }
        for (int i = size - 1; i >= 0; i--) {
            if (array[offset + i].equals(object)) {
                return i;
            }
        }
        return -1;
    }

    @Override
    ImmutableList subListUnchecked(int fromIndex, int toIndex) {
        return new RegularImmutableList(array, offset + fromIndex, toIndex - fromIndex);
    }

    @SuppressWarnings("unchecked")
    @Override
    public UnmodifiableListIterator listIterator(int index) {
        // for performance
        // The fake cast to E is safe because the creation methods only allow E's
        return (UnmodifiableListIterator) Iterators.forArray(array, offset, size, index);
    }
    // TODO(user): benchmark optimizations for equals() and see if they're worthwhile
}