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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003-2011, 2014 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 "CSSSelector.h"
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/text/AtomicString.h>
namespace WebCore {
class RuleData;
class StyleRule;
struct RuleFeature {
RuleFeature(StyleRule* rule, unsigned selectorIndex, bool hasDocumentSecurityOrigin)
: rule(rule)
, selectorIndex(selectorIndex)
, hasDocumentSecurityOrigin(hasDocumentSecurityOrigin)
{
}
StyleRule* rule;
unsigned selectorIndex;
bool hasDocumentSecurityOrigin;
};
struct RuleFeatureSet {
void add(const RuleFeatureSet&);
void clear();
void shrinkToFit();
void collectFeatures(const RuleData&);
HashSet<AtomicStringImpl*> idsInRules;
HashSet<AtomicStringImpl*> idsMatchingAncestorsInRules;
HashSet<AtomicStringImpl*> classesInRules;
HashSet<AtomicStringImpl*> attributeCanonicalLocalNamesInRules;
HashSet<AtomicStringImpl*> attributeLocalNamesInRules;
Vector<RuleFeature> siblingRules;
Vector<RuleFeature> uncommonAttributeRules;
HashMap<AtomicStringImpl*, std::unique_ptr<Vector<RuleFeature>>> ancestorClassRules;
struct AttributeRules {
using SelectorKey = std::pair<AtomicStringImpl*, std::pair<AtomicStringImpl*, unsigned>>;
HashMap<SelectorKey, const CSSSelector*> selectors;
Vector<RuleFeature> features;
};
HashMap<AtomicStringImpl*, std::unique_ptr<AttributeRules>> ancestorAttributeRulesForHTML;
bool usesFirstLineRules { false };
bool usesFirstLetterRules { false };
private:
struct SelectorFeatures {
bool hasSiblingSelector { false };
Vector<AtomicStringImpl*> classesMatchingAncestors;
Vector<const CSSSelector*> attributeSelectorsMatchingAncestors;
};
void recursivelyCollectFeaturesFromSelector(SelectorFeatures&, const CSSSelector&, bool matchesAncestor = false);
};
} // namespace WebCore
#endif // RuleFeature_h
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