Source/core/css/SelectorCheckerFastPath.h

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
 * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef SelectorCheckerFastPath_h
#define SelectorCheckerFastPath_h

#include "core/css/CSSSelector.h"
#include "core/css/SelectorChecker.h"

namespace WebCore {

class SelectorCheckerFastPath {
public:
    SelectorCheckerFastPath(const CSSSelector&, const Element&);

    bool matches() const;
    bool matchesRightmostSelector(SelectorChecker::VisitedMatchType) const;
    bool matchesRightmostAttributeSelector() const;

    static bool canUse(const CSSSelector&);

private:
    bool commonPseudoClassSelectorMatches(SelectorChecker::VisitedMatchType) const;

    const CSSSelector& m_selector;
    const Element& m_element;
};

inline bool SelectorCheckerFastPath::matchesRightmostAttributeSelector() const
{
    if (m_selector.m_match == CSSSelector::Exact || m_selector.m_match == CSSSelector::Set)
        return SelectorChecker::checkExactAttribute(m_element, m_selector.attribute(), m_selector.value().impl());
    ASSERT(!m_selector.isAttributeSelector());
    return true;
}

}

#endif