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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.pattern;
15  
16  
17  /**
18   * Implements this to perform post compile processing for a PatternLayout.
19   * 
20   * For example, PatternLayout in the classic module should add a converter for
21   * exception handling (otherwise exceptions would not be printed).
22   * 
23   * @author Ceki Gulcu
24   */
25  public interface PostCompileProcessor<E> {
26  
27    /**
28     * Post compile processing of the converter chain.
29     * 
30     * @param head
31     *                The first converter in the chain
32     */
33    void process(Converter<E> head);
34  }