/*

 * Copyright 2005 Frerich Raabe <raabe@kde.org>

 * Copyright (C) 2006 Apple Computer, Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "XPathEvaluator.h"

#if ENABLE(XPATH)

#include "ExceptionCode.h"

#include "NativeXPathNSResolver.h"

#include "Node.h"

#include "XPathExpression.h"

#include "XPathResult.h"

#include "XPathUtil.h"

namespace WebCore {

using namespace XPath;

PassRefPtr<XPathExpression> XPathEvaluator::createExpression(const String& expression,

                                                             XPathNSResolver* resolver,

                                                             ExceptionCode& ec)

{

    return XPathExpression::createExpression(expression, resolver, ec);

}

PassRefPtr<XPathNSResolver> XPathEvaluator::createNSResolver(Node* nodeResolver)

{

    return NativeXPathNSResolver::create(nodeResolver);

}

PassRefPtr<XPathResult> XPathEvaluator::evaluate(const String& expression,

                                                 Node* contextNode,

                                                 XPathNSResolver* resolver,

                                                 unsigned short type,

                                                 XPathResult* result,

                                                 ExceptionCode& ec)

{

    if (!isValidContextNode(contextNode)) {

        ec = NOT_SUPPORTED_ERR;

        return 0;

    }

    ec = 0;

    RefPtr<XPathExpression> expr = createExpression(expression, resolver, ec);

    if (ec)

        return 0;

    return expr->evaluate(contextNode, type, result, ec);

}

}

#endif // ENABLE(XPATH)