Use #pragma once in WebCore
[WebKit-https.git] / Source / WebCore / css / RuleFeature.h
1 /*
2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3  * Copyright (C) 2003-2011, 2014 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 #pragma once
23
24 #include "CSSSelector.h"
25 #include <wtf/Forward.h>
26 #include <wtf/HashMap.h>
27 #include <wtf/HashSet.h>
28 #include <wtf/text/AtomicString.h>
29
30 namespace WebCore {
31
32 class RuleData;
33 class StyleRule;
34
35 struct 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
47 struct RuleFeatureSet {
48     void add(const RuleFeatureSet&);
49     void clear();
50     void shrinkToFit();
51     void collectFeatures(const RuleData&);
52
53     HashSet<AtomicStringImpl*> idsInRules;
54     HashSet<AtomicStringImpl*> idsMatchingAncestorsInRules;
55     HashSet<AtomicStringImpl*> classesInRules;
56     HashSet<AtomicStringImpl*> attributeCanonicalLocalNamesInRules;
57     HashSet<AtomicStringImpl*> attributeLocalNamesInRules;
58     Vector<RuleFeature> siblingRules;
59     Vector<RuleFeature> uncommonAttributeRules;
60     HashMap<AtomicStringImpl*, std::unique_ptr<Vector<RuleFeature>>> ancestorClassRules;
61
62     struct AttributeRules {
63         WTF_MAKE_FAST_ALLOCATED;
64     public:
65         using SelectorKey = std::pair<AtomicStringImpl*, std::pair<AtomicStringImpl*, unsigned>>;
66         HashMap<SelectorKey, const CSSSelector*> selectors;
67         Vector<RuleFeature> features;
68     };
69     HashMap<AtomicStringImpl*, std::unique_ptr<AttributeRules>> ancestorAttributeRulesForHTML;
70     bool usesFirstLineRules { false };
71     bool usesFirstLetterRules { false };
72
73 private:
74     struct SelectorFeatures {
75         bool hasSiblingSelector { false };
76         Vector<AtomicStringImpl*, 32> classesMatchingAncestors;
77         Vector<const CSSSelector*> attributeSelectorsMatchingAncestors;
78     };
79     void recursivelyCollectFeaturesFromSelector(SelectorFeatures&, const CSSSelector&, bool matchesAncestor = false);
80 };
81
82 } // namespace WebCore