/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the  "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Class heaer file...
#include "XalanReferenceCountedObject.hpp"



#include <cassert>

#if !defined(NDEBUG)
#include <climits>
#endif



XALAN_CPP_NAMESPACE_BEGIN



XalanReferenceCountedObject::XalanReferenceCountedObject() :
    m_referenceCount(0)
{
}



XalanReferenceCountedObject::~XalanReferenceCountedObject()
{
    assert(m_referenceCount == 0);
}   



void
XalanReferenceCountedObject::addReference(XalanReferenceCountedObject*      theInstance)
{
    if (theInstance != 0)
    {
        assert(theInstance->m_referenceCount < UINT_MAX);

        if (++theInstance->m_referenceCount == 1)
        {
            theInstance->referenced();
        }
    }
}



void
XalanReferenceCountedObject::removeReference(XalanReferenceCountedObject*   theInstance)
{
    if (theInstance != 0)
    {
        assert(theInstance->m_referenceCount > 0);

        if (--theInstance->m_referenceCount == 0)
        {
            theInstance->dereferenced();
        }
    }
}



XALAN_CPP_NAMESPACE_END
