2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
25 #include "wtf/Forward.h"
26 #include "wtf/HashSet.h"
27 #include "wtf/text/AtomicStringHash.h"
33 class CSSSelectorList;
36 RuleFeature(StyleRule* rule, unsigned selectorIndex, bool hasDocumentSecurityOrigin)
38 , selectorIndex(selectorIndex)
39 , hasDocumentSecurityOrigin(hasDocumentSecurityOrigin)
43 unsigned selectorIndex;
44 bool hasDocumentSecurityOrigin;
47 class RuleFeatureSet {
50 : m_usesFirstLineRules(false)
51 , m_maxDirectAdjacentSelectors(0)
54 void add(const RuleFeatureSet&);
57 void collectFeaturesFromSelector(const CSSSelector*);
59 bool usesSiblingRules() const { return !siblingRules.isEmpty(); }
60 bool usesFirstLineRules() const { return m_usesFirstLineRules; }
62 unsigned maxDirectAdjacentSelectors() const { return m_maxDirectAdjacentSelectors; }
63 void setMaxDirectAdjacentSelectors(unsigned value) { m_maxDirectAdjacentSelectors = std::max(value, m_maxDirectAdjacentSelectors); }
65 inline bool hasSelectorForAttribute(const AtomicString& attributeName) const
67 ASSERT(!attributeName.isEmpty());
68 return attrsInRules.contains(attributeName);
71 inline bool hasSelectorForClass(const AtomicString& classValue) const
73 ASSERT(!classValue.isEmpty());
74 return classesInRules.contains(classValue);
77 inline bool hasSelectorForId(const AtomicString& idValue) const
79 ASSERT(!idValue.isEmpty());
80 return idsInRules.contains(idValue);
83 HashSet<AtomicString> idsInRules;
84 HashSet<AtomicString> classesInRules;
85 HashSet<AtomicString> attrsInRules;
86 Vector<RuleFeature> siblingRules;
87 Vector<RuleFeature> uncommonAttributeRules;
89 void collectFeaturesFromSelectorList(const CSSSelectorList*);
91 bool m_usesFirstLineRules;
92 unsigned m_maxDirectAdjacentSelectors;
95 } // namespace WebCore
97 #endif // RuleFeature_h