1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
4 * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
5 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
6 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
7 * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
8 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
9 * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
10 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
11 * Copyright (C) 2012 Google Inc. All rights reserved.
12 *
13 * This library is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Library General Public
15 * License as published by the Free Software Foundation; either
16 * version 2 of the License, or (at your option) any later version.
17 *
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Library General Public License for more details.
22 *
23 * You should have received a copy of the GNU Library General Public License
24 * along with this library; see the file COPYING.LIB. If not, write to
25 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 * Boston, MA 02110-1301, USA.
27 */
28
29 #include "config.h"
30 #include "core/css/RuleFeature.h"
31
32 #include "HTMLNames.h"
33 #include "core/css/CSSSelector.h"
34 #include "core/css/CSSSelectorList.h"
35
36 namespace WebCore {
37
collectFeaturesFromSelector(const CSSSelector * selector)38 void RuleFeatureSet::collectFeaturesFromSelector(const CSSSelector* selector)
39 {
40 if (selector->m_match == CSSSelector::Id)
41 idsInRules.add(selector->value());
42 else if (selector->m_match == CSSSelector::Class)
43 classesInRules.add(selector->value());
44 else if (selector->isAttributeSelector())
45 attrsInRules.add(selector->attribute().localName());
46 switch (selector->pseudoType()) {
47 case CSSSelector::PseudoFirstLine:
48 m_usesFirstLineRules = true;
49 break;
50 break;
51 case CSSSelector::PseudoHost:
52 collectFeaturesFromSelectorList(selector->selectorList());
53 break;
54 default:
55 break;
56 }
57 }
58
collectFeaturesFromSelectorList(const CSSSelectorList * selectorList)59 void RuleFeatureSet::collectFeaturesFromSelectorList(const CSSSelectorList* selectorList)
60 {
61 if (!selectorList)
62 return;
63
64 for (const CSSSelector* selector = selectorList->first(); selector; selector = CSSSelectorList::next(selector)) {
65 for (const CSSSelector* subSelector = selector; subSelector; subSelector = subSelector->tagHistory())
66 collectFeaturesFromSelector(subSelector);
67 }
68 }
69
add(const RuleFeatureSet & other)70 void RuleFeatureSet::add(const RuleFeatureSet& other)
71 {
72 HashSet<AtomicString>::const_iterator end = other.idsInRules.end();
73 for (HashSet<AtomicString>::const_iterator it = other.idsInRules.begin(); it != end; ++it)
74 idsInRules.add(*it);
75 end = other.classesInRules.end();
76 for (HashSet<AtomicString>::const_iterator it = other.classesInRules.begin(); it != end; ++it)
77 classesInRules.add(*it);
78 end = other.attrsInRules.end();
79 for (HashSet<AtomicString>::const_iterator it = other.attrsInRules.begin(); it != end; ++it)
80 attrsInRules.add(*it);
81 siblingRules.append(other.siblingRules);
82 uncommonAttributeRules.append(other.uncommonAttributeRules);
83 m_usesFirstLineRules = m_usesFirstLineRules || other.m_usesFirstLineRules;
84 m_maxDirectAdjacentSelectors = std::max(m_maxDirectAdjacentSelectors, other.maxDirectAdjacentSelectors());
85 }
86
clear()87 void RuleFeatureSet::clear()
88 {
89 idsInRules.clear();
90 classesInRules.clear();
91 attrsInRules.clear();
92 siblingRules.clear();
93 uncommonAttributeRules.clear();
94 m_usesFirstLineRules = false;
95 m_maxDirectAdjacentSelectors = 0;
96 }
97
98 } // namespace WebCore
99