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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "core/css/resolver/StyleRuleUsageTracker.h" | 5 #include "core/css/resolver/StyleRuleUsageTracker.h" |
6 | 6 |
| 7 #include "core/css/CSSStyleSheet.h" |
7 #include "core/css/StyleRule.h" | 8 #include "core/css/StyleRule.h" |
8 | 9 |
9 namespace blink { | 10 namespace blink { |
10 | 11 |
11 bool StyleRuleUsageTracker::contains(StyleRule* rule) const { | 12 StyleRuleUsageTracker::RuleListByStyleSheet StyleRuleUsageTracker::takeDelta() { |
12 return m_ruleList.contains(rule); | 13 RuleListByStyleSheet result; |
| 14 result.swap(m_usedRulesDelta); |
| 15 return result; |
| 16 } |
| 17 |
| 18 void StyleRuleUsageTracker::track(const CSSStyleSheet* parentSheet, |
| 19 const StyleRule* rule) { |
| 20 if (!parentSheet) |
| 21 return; |
| 22 if (!m_usedRules.insert(std::make_pair(parentSheet, rule)).isNewEntry) |
| 23 return; |
| 24 auto it = m_usedRulesDelta.find(parentSheet); |
| 25 if (it != m_usedRulesDelta.end()) { |
| 26 it->value.push_back(rule); |
| 27 } else { |
| 28 m_usedRulesDelta.insert(parentSheet, HeapVector<Member<const StyleRule>>()) |
| 29 .storedValue->value.push_back(rule); |
| 30 } |
13 } | 31 } |
14 | 32 |
15 DEFINE_TRACE(StyleRuleUsageTracker) { | 33 DEFINE_TRACE(StyleRuleUsageTracker) { |
16 visitor->trace(m_ruleList); | 34 visitor->trace(m_usedRules); |
| 35 visitor->trace(m_usedRulesDelta); |
17 } | 36 } |
18 | 37 |
19 } // namespace blink | 38 } // namespace blink |
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