software.amazon.ion.impl.lite.IonListLite Maven / Gradle / Ivy

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A Java implementation of the Amazon Ion data notation.

There is a newer version: 1.5.1

/*
 * Copyright 2010-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at:
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file 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 software.amazon.ion.impl.lite;

import java.util.Collection;
import software.amazon.ion.ContainedValueException;
import software.amazon.ion.IonList;
import software.amazon.ion.IonType;
import software.amazon.ion.IonValue;
import software.amazon.ion.ValueVisitor;

final class IonListLite
    extends IonSequenceLite
    implements IonList
{
    private static final int HASH_SIGNATURE =
        IonType.LIST.toString().hashCode();


    /**
     * Constructs a null or empty list.
     *
     * @param makeNull indicates whether this should be null.list
     * (if true) or an empty sequence (if false).
     */
    IonListLite(ContainerlessContext context, boolean makeNull)
    {
        super(context, makeNull);
    }

    IonListLite(IonListLite existing, IonContext context)
    {
        super(existing, context);
    }

    /**
     * Constructs a list value not backed by binary.
     *
     * @param elements
     *   the initial set of child elements.  If null, then the new
     *   instance will have {@link #isNullValue()} == true.
     *
     * @throws ContainedValueException if any value in elements
     * has {@link IonValue#getContainer()} != null.
     */
    IonListLite(ContainerlessContext context,
                Collection elements)
        throws ContainedValueException
    {
        super(context, elements);
    }

    @Override
    IonListLite clone(IonContext parentContext)
    {
        return new IonListLite(this, parentContext);
    }

    @Override
    public IonListLite clone()
    {
        return clone(ContainerlessContext.wrap(getSystem()));
    }

    @Override
    int hashCode(SymbolTableProvider symbolTableProvider) {
        return sequenceHashCode(HASH_SIGNATURE, symbolTableProvider);
    }

    @Override
    public IonType getType()
    {
        return IonType.LIST;
    }

    @Override
    public void accept(ValueVisitor visitor)
        throws Exception
    {
        visitor.visit(this);
    }
}