// Decompiled by Jad v1.5.8e. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: braces fieldsfirst space lnc 

package org.slf4j.helpers;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.slf4j.IMarkerFactory;
import org.slf4j.Marker;

// Referenced classes of package org.slf4j.helpers:
//            BasicMarker

public class BasicMarkerFactory
    implements IMarkerFactory
{

    private final ConcurrentMap markerMap = new ConcurrentHashMap();

    public BasicMarkerFactory()
    {
    }

    public boolean detachMarker(String s)
    {
        while (s == null || markerMap.remove(s) == null) 
        {
            return false;
        }
        return true;
    }

    public boolean exists(String s)
    {
        if (s == null)
        {
            return false;
        } else
        {
            return markerMap.containsKey(s);
        }
    }

    public Marker getDetachedMarker(String s)
    {
        return new BasicMarker(s);
    }

    public Marker getMarker(String s)
    {
        if (s == null)
        {
            throw new IllegalArgumentException("Marker name cannot be null");
        }
        Marker marker = (Marker)markerMap.get(s);
        Object obj = marker;
        if (marker == null)
        {
            obj = new BasicMarker(s);
            s = (Marker)markerMap.putIfAbsent(s, obj);
            if (s != null)
            {
                obj = s;
            }
        }
        return ((Marker) (obj));
    }
}