/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the LICENSE file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

package hdf.hdf5lib.structs;

import static org.hdfgroup.javahdf5.hdf5_h.*;

import java.io.Serializable;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.ValueLayout;
import java.util.Arrays;

import hdf.hdf5lib.HDF5Constants;

import org.hdfgroup.javahdf5.*;

/**
 * Object token, which is a unique and permanent identifier, for an HDF5 object within a container.
 *
 */
public class H5O_token_t implements Serializable {
    private static final long serialVersionUID = -4754320605310155032L;
    /**
     * Tokens are unique and permanent identifiers that are
     *          used to reference HDF5 objects in a container.
     *          Use basic byte array to store the dat
     */
    public byte[] data;

    public H5O_token_t(byte[] data) { this.data = data; }

    public H5O_token_t(MemorySegment data) { this.data = data.toArray(ValueLayout.JAVA_BYTE); }

    /**
     * Check if token data is undefined
     *
     * @return true if token data is undefined
     */
    public boolean isUndefined() { return this.equals(HDF5Constants.H5O_TOKEN_UNDEF); }

    @Override
    public boolean equals(Object o)
    {
        if (this == o)
            return true;

        if (!(o instanceof H5O_token_t))
            return false;

        H5O_token_t token = (H5O_token_t)o;

        return Arrays.equals(this.data, token.data);
    }
}