ConnectionQueueItem.java

/** @file ConnectionQueueItem.java
 *
 * @author marco corvi
 * @date 
 *
 * @brief TopoDroid cosurveying connection queue item
 * --------------------------------------------------------
 *  Copyright This sowftare is distributed under GPL-3.0 or later
 *  See the file COPYING.
 * --------------------------------------------------------
 */
package com.topodroid.DistoX;

class ConnectionQueueItem
{
  byte[] mData;
  ConnectionQueueItem next;
  ConnectionQueueItem prev;

  // create a new ConnectionQueue
  ConnectionQueueItem( byte[] data )
  {
    mData = data;
    next = null;
    prev = null;
  }

  // create a new ConnectionQueueItem and append to "p"
  ConnectionQueueItem( byte[] data, ConnectionQueueItem p )
  {
    mData = data;
    next = null;
    prev = p;
    if ( p != null ) p.next = this;
  }

  // create a new ConnectionQueueItem and link between "p" and "n"
  ConnectionQueueItem( byte[] data, ConnectionQueueItem n, ConnectionQueueItem p )
  {
    mData = data;
    next = n;
    prev = p;
    if ( n != null ) n.prev = this;
    if ( p != null ) p.next = this;
  }

  boolean hasId( byte id ) { return id == mData[0]; }

}