Make SelectorChecker a const operation over element.

sky/engine/core/css/ElementRuleCollector.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 25 matching lines @@
 #include "sky/engine/core/dom/shadow/ShadowRoot.h"
 #include "sky/engine/core/rendering/style/RenderStyle.h"
 #include "sky/engine/core/rendering/style/StyleInheritedData.h"
 
 namespace blink {
 
 ElementRuleCollector::ElementRuleCollector(const ElementResolveContext& context,
     RenderStyle* style)
     : m_context(context)
     , m_style(style)
-    , m_mode(SelectorChecker::ResolvingStyle)
     , m_matchingUARules(false)
 { }
 
 ElementRuleCollector::~ElementRuleCollector()
 {
 }
 
 MatchResult& ElementRuleCollector::matchedResult()
 {
     return m_result;
@@ skipping 67 matching lines @@
 
     // Now transfer the set of matched rules over to our list of declarations.
     for (unsigned i = 0; i < matchedRules.size(); i++) {
         const RuleData* ruleData = matchedRules[i].ruleData();
         m_result.addMatchedProperties(&ruleData->rule()->properties());
     }
 }
 
 inline bool ElementRuleCollector::ruleMatches(const RuleData& ruleData, const ContainerNode* scope)
 {
-    SelectorChecker selectorChecker(m_context.element()->document(), m_mode);
+    SelectorChecker selectorChecker;
     SelectorChecker::SelectorCheckingContext context(ruleData.selector(), m_context.element());
-    context.elementStyle = m_style.get();
     context.scope = scope;
-    return selectorChecker.match(context);
+    if (selectorChecker.match(context)) {
+        if (selectorChecker.matchedAttributeSelector())
+            m_style->setUnique();
+        if (selectorChecker.matchedFocusSelector())
+            m_style->setAffectedByFocus();
+        if (selectorChecker.matchedHoverSelector())
+            m_style->setAffectedByHover();
+        if (selectorChecker.matchedActiveSelector())
+            m_style->setAffectedByActive();
+        return true;
+    }
+    return false;
 }
 
 void ElementRuleCollector::collectRuleIfMatches(const RuleData& ruleData, CascadeScope cascadeScope, CascadeOrder cascadeOrder, const MatchRequest& matchRequest, RuleRange& ruleRange)
 {
     StyleRule* rule = ruleData.rule();
     if (ruleMatches(ruleData, matchRequest.scope)) {
         // If the rule has no properties to apply, then ignore it in the non-debug mode.
         const StylePropertySet& properties = rule->properties();
         if (properties.isEmpty())
             return;
@@ skipping 16 matching lines @@
     return matchedRule1.position() < matchedRule2.position();
 }
 
 void ElementRuleCollector::sortMatchedRules()
 {
     ASSERT(m_matchedRules);
     std::sort(m_matchedRules->begin(), m_matchedRules->end(), compareRules);
 }
 
 } // namespace blink