/*

 * 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.

 */

#ifndef XPathEvaluator_h

#define XPathEvaluator_h

#if ENABLE(XPATH)

#include "Shared.h"

#include <wtf/Forward.h>

namespace WebCore {

    typedef int ExceptionCode;

    class Node;

    class String;

    class XPathExpression;

    class XPathNSResolver;

    class XPathResult;

    // FIXME: Should these exception codes move to another header?

    const int XPathExceptionOffset = 400;

    const int XPathExceptionMax = 499;

    enum XPathExceptionCode { INVALID_EXPRESSION_ERR = XPathExceptionOffset + 51, TYPE_ERR };

    class XPathEvaluator : public Shared<XPathEvaluator> {

    public:

        PassRefPtr<XPathExpression> createExpression(const String& expression, XPathNSResolver*, ExceptionCode&);

        PassRefPtr<XPathNSResolver> createNSResolver(Node* nodeResolver);

        PassRefPtr<XPathResult> evaluate(const String& expression, Node* contextNode,

            XPathNSResolver*, unsigned short type, XPathResult*, ExceptionCode&);

    };

}

#endif // ENABLE(XPATH)

#endif // XPathEvaluator_h