/*
 * Copyright 2005 Frerich Raabe <raabe@kde.org>
 * Copyright (C) 2006, 2013 Apple Inc. All rights reserved.
 *
 * 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.
 */

#pragma once

#include <wtf/Ref.h>
#include <wtf/RefCounted.h>

namespace WTF {

class String;

} // namespace WTF

namespace WebCore {

class Node;
class XPathNSResolver;
class XPathResult;
template<typename> class ExceptionOr;

namespace XPath {
class Expression;
}

class XPathExpression : public RefCounted<XPathExpression> {
public:
    static ExceptionOr<Ref<XPathExpression>> createExpression(const String& expression, RefPtr<XPathNSResolver>&&);
    WEBCORE_EXPORT ~XPathExpression();

    WEBCORE_EXPORT ExceptionOr<Ref<XPathResult>> evaluate(Node& contextNode, unsigned short type, XPathResult*);

private:
    explicit XPathExpression(std::unique_ptr<XPath::Expression>);

    std::unique_ptr<XPath::Expression> m_topExpression;
};

}
