/*
 * 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 "FunctionHasSameNodes.hpp"


#include <xalanc/PlatformSupport/XalanMessageLoader.hpp>


#include <xalanc/XPath/XPathExecutionContext.hpp>
#include <xalanc/XPath/XObjectFactory.hpp>


XALAN_CPP_NAMESPACE_BEGIN


FunctionHasSameNodes::FunctionHasSameNodes()
{
}


FunctionHasSameNodes::~FunctionHasSameNodes()
{
}


XObjectPtr
FunctionHasSameNodes::execute(
            XPathExecutionContext&          executionContext,
            XalanNode*                      context,
            const XObjectArgVectorType&     args,
            const Locator*                  locator) const
{
    if (args.size() != 2)
    {
        generalError(
            executionContext,
            context,
            locator);
    }

    assert(args[0].null() == false && args[1].null() == false);

    const NodeRefListBase&  nodeset1 = args[0]->nodeset();
    const NodeRefListBase&  nodeset2 = args[1]->nodeset();

    const NodeRefListBase::size_type    theLength = nodeset1.getLength();

    bool    fResult = true;

    if (theLength != nodeset2.getLength())
    {
        fResult = false;
    }
    else
    {
        for (NodeRefListBase::size_type i = 0; i < theLength && fResult == true; ++i)
        {
            XalanNode* const    theNode = nodeset1.item(i);
            assert(theNode != 0);

            if (nodeset2.indexOf(theNode) == NodeRefListBase::npos)
            {
                fResult = false;
            }
        }
    }

    return executionContext.getXObjectFactory().createBoolean(fResult);
}


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


const XalanDOMString&
FunctionHasSameNodes::getError(XalanDOMString&  theResult) const
{
    return XalanMessageLoader::getMessage(
                theResult,
                XalanMessages::FunctionAcceptsTwoArguments_1Param,
                "has-same-nodes");

}


XALAN_CPP_NAMESPACE_END