package org.opentrafficsim.road.gtu.lane.perception;
   
   import java.io.Serializable;
   
   import org.djunits.value.vdouble.scalar.Length;
   
   import nl.tudelft.simulation.language.Throw;
   
   /**
   * Contains information by which drivers know when they need to leave a lane in order to be able to stay on the infrastructure
   * and follow their route.
   * <p>
   * Copyright (c) 2013-2016 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/docs/current/license.html">OpenTrafficSim License</a>.
   * <p>
   * @version $Revision$, $LastChangedDate$, by $Author$, initial version May 2, 2016 <br>
   * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
   */
  
  public class InfrastructureLaneChangeInfo implements Comparable<InfrastructureLaneChangeInfo>, Serializable
  {
  
      /** */
      private static final long serialVersionUID = 20160811L;
  
      /** Required number of lane changes. */
      private final int requiredNumberOfLaneChanges;
  
      /** Remaining distance to perform required lane changes. */
      private final Length remainingDistance;
  
      /**
       * Constructor.
       * @param requiredNumberOfLaneChanges required number of lane changes
       * @param remainingDistance remaining distance to perform required lane changes
       * @throws IllegalArgumentException if required number of lane changes or remaining distance is negative
       * @throws NullPointerException if remaining distance is null
       */
      public InfrastructureLaneChangeInfo(final int requiredNumberOfLaneChanges, final Length remainingDistance)
      {
          Throw.when(requiredNumberOfLaneChanges < 0, IllegalArgumentException.class,
              "Required number of lane changes may not be negative.");
          Throw.whenNull(remainingDistance, "Remaining distance may not be null.");
          Throw.when(remainingDistance.si < 0, IllegalArgumentException.class, "Remaining distance may not be negative.");
          this.requiredNumberOfLaneChanges = requiredNumberOfLaneChanges;
          this.remainingDistance = remainingDistance;
      }
  
      /**
       * @return requiredNumberOfLaneChanges required number of lane changes.
       */
      public final int getRequiredNumberOfLaneChanges()
      {
          return this.requiredNumberOfLaneChanges;
      }
  
      /**
       * @return remainingDistance remaining distance to perform required lane changes.
       */
      public final Length getRemainingDistance()
      {
          return this.remainingDistance;
      }
  
      /** {@inheritDoc} */
      @SuppressWarnings("checkstyle:designforextension")
      @Override
      public String toString()
      {
          return "InfrastructureLaneChangeInfo [requiredNumberOfLaneChanges=" + this.requiredNumberOfLaneChanges
              + ", remainingDistance=" + this.remainingDistance + "]";
      }
  
      /** {@inheritDoc} */
      @Override
      public final int compareTo(final InfrastructureLaneChangeInfo infrastructureLaneChangeInfo)
      {
          return this.remainingDistance.compareTo(infrastructureLaneChangeInfo.getRemainingDistance());
      }
  
  }