package org.djutils.serialization.serializers;
   
   import org.djunits.unit.Unit;
   import org.djunits.unit.scale.IdentityScale;
   import org.djunits.value.ValueRuntimeException;
   import org.djunits.value.storage.StorageType;
   import org.djunits.value.vdouble.scalar.base.DoubleScalarInterface;
   import org.djunits.value.vdouble.vector.base.DoubleVector;
   import org.djunits.value.vdouble.vector.base.DoubleVectorInterface;
  import org.djunits.value.vdouble.vector.data.DoubleVectorData;
  import org.djutils.serialization.EndianUtil;
  import org.djutils.serialization.FieldTypes;
  import org.djutils.serialization.SerializationException;
  
  /**
   * (De)serializes a DJUNITS DoubleVector.
   * <p>
   * Copyright (c) 2019-2022 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://djunits.org/docs/license.html">DJUNITS License</a>.
   * <p>
   * @author <a href="https://www.tudelft.nl/averbraeck" target="_blank">Alexander Verbraeck</a>
   * @param <U> the unit type
   * @param <S> the scalar type
   * @param <V> the vector type
   */
  public class DoubleVectorSerializer<U extends Unit<U>, S extends DoubleScalarInterface<U, S>,
          V extends DoubleVectorInterface<U, S, V>> extends ArrayOrMatrixWithUnitSerializer<U, V>
  {
      /** */
      public DoubleVectorSerializer()
      {
          super(FieldTypes.DOUBLE_64_UNIT_ARRAY, "Djunits_DoubleVector", 1);
      }
  
      /** {@inheritDoc} */
      @Override
      public int size(final V adv) throws SerializationException
      {
          try
          {
              return 4 + 2 + 8 * adv.size();
          }
          catch (ValueRuntimeException e)
          {
              throw new SerializationException(e);
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public void serialize(final V adv, final byte[] buffer, final Pointer pointer, final EndianUtil endianUtil)
              throws SerializationException
      {
          try
          {
              endianUtil.encodeInt(adv.size(), buffer, pointer.getAndIncrement(4));
              encodeUnit(adv.getDisplayUnit(), buffer, pointer, endianUtil);
              for (int i = 0; i < adv.size(); i++)
              {
                  endianUtil.encodeDouble(adv.get(i).getSI(), buffer, pointer.getAndIncrement(8));
              }
          }
          catch (ValueRuntimeException e)
          {
              throw new SerializationException(e);
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public V deSerialize(final byte[] buffer, final Pointer pointer, final EndianUtil endianUtil) throws SerializationException
      {
          int size = endianUtil.decodeInt(buffer, pointer.getAndIncrement(4));
          Unit<? extends Unit<?>> unit = getUnit(buffer, pointer, endianUtil);
          double[] array = new double[size];
          for (int i = 0; i < size; i++)
          {
              array[i] = endianUtil.decodeDouble(buffer, pointer.getAndIncrement(8));
          }
          try
          {
              DoubleVectorData fvd = DoubleVectorData.instantiate(array, IdentityScale.SCALE, StorageType.DENSE);
              return DoubleVector.instantiateAnonymous(fvd, unit);
          }
          catch (ValueRuntimeException exception)
          {
              throw new SerializationException(exception);
          }
      }
  
  }