//
   //  ========================================================================
   //  Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.websocket.common.io;
  
  import org.eclipse.jetty.websocket.api.WriteCallback;
  import org.eclipse.jetty.websocket.api.extensions.Frame;
  import org.eclipse.jetty.websocket.api.extensions.IncomingFrames;
  import org.eclipse.jetty.websocket.api.extensions.OutgoingFrames;
  
  public class FramePipes
  {
      private static class In2Out implements IncomingFrames
      {
          private OutgoingFrames outgoing;
  
          public In2Out(OutgoingFrames outgoing)
          {
              this.outgoing = outgoing;
          }
  
          @Override
          public void incomingError(Throwable t)
          {
              /* cannot send exception on */
          }
  
          @Override
          public void incomingFrame(Frame frame)
          {
              this.outgoing.outgoingFrame(frame,null);
          }
      }
  
      private static class Out2In implements OutgoingFrames
      {
          private IncomingFrames incoming;
  
          public Out2In(IncomingFrames incoming)
          {
              this.incoming = incoming;
          }
  
          @Override
          public void outgoingFrame(Frame frame, WriteCallback callback)
          {
              try
              {
                  this.incoming.incomingFrame(frame);
                  callback.writeSuccess();
              }
              catch (Throwable t)
              {
                  callback.writeFailed(t);
              }
          }
      }
  
      public static OutgoingFrames to(final IncomingFrames incoming)
      {
          return new Out2In(incoming);
      }
  
      public static IncomingFrames to(final OutgoingFrames outgoing)
      {
          return new In2Out(outgoing);
      }
  }