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MDSplus interface (via lib or mdsip).
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package mds.data.descriptor;

import java.math.BigInteger;
import java.nio.ByteBuffer;

import mds.MdsException;
import mds.data.DTYPE;
import mds.data.TREE;
import mds.data.descriptor_s.Missing;
import mds.mdsip.Message;

/** XS (-63 : 193) **/
public class Descriptor_XS extends Descriptor>
{
	public static final short _l_lenI = 8;
	@SuppressWarnings("hiding")
	public static final int BYTES = Descriptor.BYTES + 4;
	public static final byte CLASS = -63;

	public static final Descriptor_XS deserialize(final ByteBuffer bb) throws MdsException
	{
		return new Descriptor_XS(bb);
	}

	protected static final ByteBuffer getPointer(final ByteBuffer bi)
	{
		ByteBuffer bo = bi.duplicate().order(bi.order());
		bo.position(bi.getInt(Descriptor._ptrI));
		bo = bo.slice().order(bi.order());
		bo.limit(bi.getInt(Descriptor_XS._l_lenI));
		return bo;
	}

	public Descriptor_XS(final ByteBuffer b)
	{
		super(b);
		this.b.limit(this.pointer() + this.payload().getSize());
	}

	public Descriptor_XS(final Descriptor value)
	{
		super(Descriptor_XS._l_lenI, DTYPE.DSC, Descriptor_XS.CLASS, value.b, Descriptor_XS.BYTES, 0);
	}

	@Override
	public final StringBuilder decompile(final int prec, final StringBuilder pout, final int mode)
	{
		return (this.pointer() == 0) ? pout.append("*") : this.payload().decompile(prec, pout, mode);
	}

	@Override
	public Descriptor getAtomic()
	{
		return this.payload();
	}

	@Override
	protected Descriptor getData_(final DTYPE... omits) throws MdsException
	{
		return this.pointer() == 0 ? Missing.NEW : this.payload().getData(omits);
	}

	@Override
	public final Descriptor getHelp()
	{
		return null;
	}

	@Override
	public Descriptor_XS getLocal_(final FLAG local)
	{
		final FLAG mylocal = new FLAG();
		final Descriptor dsc = Descriptor.getLocal(mylocal, this.payload());
		if (FLAG.and(local, mylocal.flag))
			return this;
		return (Descriptor_XS) new Descriptor_XS(dsc).setLocal();
	}

	@Override
	public int[] getShape()
	{
		return new int[0];
	}

	public final int l_length()
	{
		return this.b.getInt(Descriptor_XS._l_lenI);
	}

	public final Descriptor payload()
	{
		try
		{
			return Descriptor.deserialize(this.b).setTree(this.tree);
		}
		catch (final MdsException e)
		{
			e.printStackTrace();
			return Missing.NEW;
		}
	}

	@Override
	public final Descriptor setTree(final TREE tree)
	{
		super.setTree(tree);
		return this;
	}

	@Override
	public final BigInteger[] toBigIntegerArray()
	{
		return this.pointer() == 0 ? null : this.payload().toBigIntegerArray();
	}

	@Override
	public final byte[] toByteArray()
	{
		return this.pointer() == 0 ? null : this.payload().toByteArray();
	}

	@Override
	public final double[] toDoubleArray()
	{
		return this.pointer() == 0 ? null : this.payload().toDoubleArray();
	}

	@Override
	public final float[] toFloatArray()
	{
		return this.pointer() == 0 ? null : this.payload().toFloatArray();
	}

	@Override
	public final int[] toIntArray()
	{
		return this.pointer() == 0 ? null : this.payload().toIntArray();
	}

	@Override
	public final long[] toLongArray()
	{
		return this.pointer() == 0 ? null : this.payload().toLongArray();
	}

	@Override
	public final Message toMessage(final byte descr_idx, final byte n_args, final byte msgid) throws MdsException
	{
		return this.pointer() == 0 ? null : this.payload().toMessage(descr_idx, n_args, msgid);
	}

	@Override
	public short[] toShortArray()
	{
		return this.pointer() == 0 ? null : this.payload().toShortArray();
	}

	@Override
	public final String[] toStringArray()
	{
		return this.pointer() == 0 ? null : this.payload().toStringArray();
	}
}