Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core.pattern;

import ch.qos.logback.core.Context;
import ch.qos.logback.core.spi.ContextAware;

public class ConverterUtil {

    
Start converters in the chain of converters.
Params:
head – /**
     * Start converters in the chain of converters.
     *
     * @param head
     */
    public static <E> void startConverters(Converter<E> head) {
        Converter<E> c = head;
        while (c != null) {
            // CompositeConverter is a subclass of DynamicConverter
            if (c instanceof CompositeConverter) {
                CompositeConverter<E> cc = (CompositeConverter<E>) c;
                Converter<E> childConverter = cc.childConverter;
                startConverters(childConverter);
                cc.start();
            } else if (c instanceof DynamicConverter) {
                DynamicConverter<E> dc = (DynamicConverter<E>) c;
                dc.start();
            }
            c = c.getNext();
        }
    }

    public static <E> Converter<E> findTail(Converter<E> head) {
        Converter<E> p = head;
        while (p != null) {
            Converter<E> next = p.getNext();
            if (next == null) {
                break;
            } else {
                p = next;
            }
        }
        return p;
    }

    public static <E> void setContextForConverters(Context context, Converter<E> head) {
        Converter<E> c = head;
        while (c != null) {
            if (c instanceof ContextAware) {
                ((ContextAware) c).setContext(context);
            }
            c = c.getNext();
        }
    }
}