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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple 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 RuleFeature_h
#define RuleFeature_h
#include "wtf/Forward.h"
#include "wtf/HashSet.h"
#include "wtf/text/AtomicStringHash.h"
namespace WebCore {
class StyleRule;
class CSSSelector;
class CSSSelectorList;
struct RuleFeature {
RuleFeature(StyleRule* rule, unsigned selectorIndex, bool hasDocumentSecurityOrigin)
: rule(rule)
, selectorIndex(selectorIndex)
, hasDocumentSecurityOrigin(hasDocumentSecurityOrigin)
{
}
StyleRule* rule;
unsigned selectorIndex;
bool hasDocumentSecurityOrigin;
};
class RuleFeatureSet {
public:
RuleFeatureSet()
: m_usesFirstLineRules(false)
, m_maxDirectAdjacentSelectors(0)
{ }
void add(const RuleFeatureSet&);
void clear();
void collectFeaturesFromSelector(const CSSSelector*);
bool usesSiblingRules() const { return !siblingRules.isEmpty(); }
bool usesFirstLineRules() const { return m_usesFirstLineRules; }
unsigned maxDirectAdjacentSelectors() const { return m_maxDirectAdjacentSelectors; }
void setMaxDirectAdjacentSelectors(unsigned value) { m_maxDirectAdjacentSelectors = std::max(value, m_maxDirectAdjacentSelectors); }
inline bool hasSelectorForAttribute(const AtomicString& attributeName) const
{
ASSERT(!attributeName.isEmpty());
return attrsInRules.contains(attributeName);
}
inline bool hasSelectorForClass(const AtomicString& classValue) const
{
ASSERT(!classValue.isEmpty());
return classesInRules.contains(classValue);
}
inline bool hasSelectorForId(const AtomicString& idValue) const
{
ASSERT(!idValue.isEmpty());
return idsInRules.contains(idValue);
}
HashSet<AtomicString> idsInRules;
HashSet<AtomicString> classesInRules;
HashSet<AtomicString> attrsInRules;
Vector<RuleFeature> siblingRules;
Vector<RuleFeature> uncommonAttributeRules;
private:
void collectFeaturesFromSelectorList(const CSSSelectorList*);
bool m_usesFirstLineRules;
unsigned m_maxDirectAdjacentSelectors;
};
} // namespace WebCore
#endif // RuleFeature_h
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