/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed 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 "FunctionUnparsedEntityURI.hpp"



#include <xalanc/XalanDOM/XalanNode.hpp>
#include <xalanc/XalanDOM/XalanDocument.hpp>



#include <xalanc/PlatformSupport/XalanMessageLoader.hpp>



#include <xalanc/XPath/XObjectFactory.hpp>



XALAN_CPP_NAMESPACE_BEGIN



FunctionUnparsedEntityURI::FunctionUnparsedEntityURI()
{
}



FunctionUnparsedEntityURI::~FunctionUnparsedEntityURI()
{
}


XObjectPtr
FunctionUnparsedEntityURI::execute(
            XPathExecutionContext&  executionContext,
            XalanNode*              context,            
            const XObjectPtr        arg,
            const LocatorType*      locator) const
{
    assert(arg.null() == false);

    if (context == 0)
    {
        XPathExecutionContext::GetAndReleaseCachedString theGuard(executionContext);

        executionContext.error(
            XalanMessageLoader::getMessage(
                theGuard.get(),
                XalanMessages::FunctionRequiresNonNullContextNode_1Param,
                "unparsed-entity-uri"),
            context,
            locator);

        return XObjectPtr();
    }
    else
    {
        const XalanDOMString&   name = arg->str();

        XalanDocument* const    doc =
                XalanNode::DOCUMENT_NODE == context->getNodeType() ?
#if defined(XALAN_OLD_STYLE_CASTS)
                    (XalanDocument*)context :
#else
                    static_cast<XalanDocument*>(context) :
#endif
                    context->getOwnerDocument();
        assert(doc != 0);

        const XalanDOMString&   theURI =
            executionContext.getUnparsedEntityURI(name, *doc);

        return executionContext.getXObjectFactory().createStringReference(theURI);
    }
}



#if defined(XALAN_NO_COVARIANT_RETURN_TYPE)
Function*
#else
FunctionUnparsedEntityURI*
#endif
FunctionUnparsedEntityURI::clone(MemoryManagerType&     theManager) const
{
   return XalanCopyConstruct(theManager, *this);
}



const XalanDOMString&
FunctionUnparsedEntityURI::getError(XalanDOMString&     theResult) const
{
    return XalanMessageLoader::getMessage(
                theResult,
                XalanMessages::FunctionAcceptsOneArgument_1Param,
                "unparsed-entity-uri");
}



XALAN_CPP_NAMESPACE_END
