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      1 /*
      2  * Copyright (c) 2009-2010 jMonkeyEngine
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  * * Redistributions of source code must retain the above copyright
     10  *   notice, this list of conditions and the following disclaimer.
     11  *
     12  * * Redistributions in binary form must reproduce the above copyright
     13  *   notice, this list of conditions and the following disclaimer in the
     14  *   documentation and/or other materials provided with the distribution.
     15  *
     16  * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
     17  *   may be used to endorse or promote products derived from this software
     18  *   without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 package com.jme3.network.serializing.serializers;
     34 
     35 import com.jme3.network.serializing.Serializer;
     36 import com.jme3.network.serializing.SerializerException;
     37 import java.io.IOException;
     38 import java.nio.ByteBuffer;
     39 
     40 /**
     41  * Enum serializer.
     42  *
     43  * @author Lars Wesselius
     44  */
     45 public class EnumSerializer extends Serializer {
     46     public <T> T readObject(ByteBuffer data, Class<T> c) throws IOException {
     47         try {
     48             int ordinal = data.getInt();
     49 
     50             if (ordinal == -1) return null;
     51             T[] enumConstants = c.getEnumConstants();
     52             if (enumConstants == null)
     53                 throw new SerializerException( "Class has no enum constants:" + c );
     54             return enumConstants[ordinal];
     55         } catch (IndexOutOfBoundsException ex) {
     56             return null;
     57         }
     58     }
     59 
     60     public void writeObject(ByteBuffer buffer, Object object) throws IOException {
     61         if (object == null) {
     62             buffer.putInt(-1);
     63         } else {
     64             buffer.putInt(((Enum)object).ordinal());
     65         }
     66     }
     67 }
     68