/*
 * 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.
 */

#include "XalanEncodingPropertyCache.hpp"
#include "XalanTranscodingServices.hpp"


namespace XALAN_CPP_NAMESPACE {


XalanEncodingPropertyCache::XalanEncodingPropertyCache(
            MemoryManager&              theManager,
            size_t                          theCacheSize,
            const XalanOutputTranscoder*    theTranscoder) :
    m_transcoder(theTranscoder),
    m_presentBitmap(theManager, theCacheSize),
    m_valueBitmap(theManager, theCacheSize)
{
}


XalanEncodingPropertyCache::~XalanEncodingPropertyCache()
{
}


bool
XalanEncodingPropertyCache::canEncodeCharacter(XalanUnicodeChar     theChar) const
{
    if (theChar > m_presentBitmap.getSize())
    {
        return m_transcoder == 0 ? true : m_transcoder->canTranscodeTo(theChar);
    }
    else if (m_presentBitmap.isSet(theChar) == true)
    {
        return m_valueBitmap.isSet(theChar);
    }
    else
    {
        if (m_transcoder == 0)
        {
            return true;
        }
        else
        {
            m_presentBitmap.set(theChar);

            const bool  fResult = m_transcoder->canTranscodeTo(theChar);

            if (fResult == true)
            {
                m_valueBitmap.set(theChar);
            }

            return fResult;
        }
    }
}


}