1/*
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.
4 *
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.
9 *
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.
14 *
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.
19 *
20 */
21
22#ifndef RuleFeature_h
23#define RuleFeature_h
24
25#include <wtf/Forward.h>
26#include <wtf/HashMap.h>
27#include <wtf/HashSet.h>
28#include <wtf/text/AtomicString.h>
29
30namespace WebCore {
31
32class StyleRule;
33class CSSSelector;
34
35struct RuleFeature {
36    RuleFeature(StyleRule* rule, unsigned selectorIndex, bool hasDocumentSecurityOrigin)
37        : rule(rule)
38        , selectorIndex(selectorIndex)
39        , hasDocumentSecurityOrigin(hasDocumentSecurityOrigin)
40    {
41    }
42    StyleRule* rule;
43    unsigned selectorIndex;
44    bool hasDocumentSecurityOrigin;
45};
46
47struct RuleFeatureSet {
48    RuleFeatureSet()
49        : usesFirstLineRules(false)
50        , usesBeforeAfterRules(false)
51    { }
52
53    void add(const RuleFeatureSet&);
54    void clear();
55
56    void collectFeaturesFromSelector(const CSSSelector*);
57
58    HashSet<AtomicStringImpl*> idsInRules;
59    HashSet<AtomicStringImpl*> classesInRules;
60    HashSet<AtomicStringImpl*> attrsInRules;
61    Vector<RuleFeature> siblingRules;
62    Vector<RuleFeature> uncommonAttributeRules;
63    bool usesFirstLineRules;
64    bool usesBeforeAfterRules;
65};
66
67} // namespace WebCore
68
69#endif // RuleFeature_h
70