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 * Copyright (C) 2013 Google Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef MatchResult_h 24 #define MatchResult_h 25 26 #include "core/css/RuleSet.h" 27 #include "core/css/SelectorChecker.h" 28 #include "platform/heap/Handle.h" 29 #include "wtf/RefPtr.h" 30 #include "wtf/Vector.h" 31 32 namespace blink { 33 34 class StylePropertySet; 35 36 struct RuleRange { RuleRangeRuleRange37 RuleRange(int& firstRuleIndex, int& lastRuleIndex): firstRuleIndex(firstRuleIndex), lastRuleIndex(lastRuleIndex) { } 38 int& firstRuleIndex; 39 int& lastRuleIndex; 40 }; 41 42 struct MatchRanges { MatchRangesMatchRanges43 MatchRanges() : firstUARule(-1), lastUARule(-1), firstAuthorRule(-1), lastAuthorRule(-1) { } 44 int firstUARule; 45 int lastUARule; 46 int firstAuthorRule; 47 int lastAuthorRule; UARuleRangeMatchRanges48 RuleRange UARuleRange() { return RuleRange(firstUARule, lastUARule); } authorRuleRangeMatchRanges49 RuleRange authorRuleRange() { return RuleRange(firstAuthorRule, lastAuthorRule); } 50 }; 51 52 struct MatchedProperties { 53 ALLOW_ONLY_INLINE_ALLOCATION(); 54 public: 55 MatchedProperties(); 56 ~MatchedProperties(); 57 58 void trace(Visitor*); 59 60 RefPtrWillBeMember<StylePropertySet> properties; 61 62 union { 63 struct { 64 unsigned linkMatchType : 2; 65 unsigned whitelistType : 2; 66 } m_types; 67 // Used to make sure all memory is zero-initialized since we compute the hash over the bytes of this object. 68 void* possiblyPaddedMember; 69 }; 70 }; 71 72 } // namespace blink 73 74 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::MatchedProperties); 75 76 namespace blink { 77 78 class MatchResult { 79 STACK_ALLOCATED(); 80 public: MatchResult()81 MatchResult() : isCacheable(true) { } 82 WillBeHeapVector<MatchedProperties, 64> matchedProperties; 83 MatchRanges ranges; 84 bool isCacheable; 85 86 void addMatchedProperties(const StylePropertySet* properties, unsigned linkMatchType = SelectorChecker::MatchAll, PropertyWhitelistType = PropertyWhitelistNone); 87 }; 88 89 inline bool operator==(const MatchRanges& a, const MatchRanges& b) 90 { 91 return a.firstUARule == b.firstUARule 92 && a.lastUARule == b.lastUARule 93 && a.firstAuthorRule == b.firstAuthorRule 94 && a.lastAuthorRule == b.lastAuthorRule; 95 } 96 97 inline bool operator!=(const MatchRanges& a, const MatchRanges& b) 98 { 99 return !(a == b); 100 } 101 102 inline bool operator==(const MatchedProperties& a, const MatchedProperties& b) 103 { 104 return a.properties == b.properties && a.m_types.linkMatchType == b.m_types.linkMatchType; 105 } 106 107 inline bool operator!=(const MatchedProperties& a, const MatchedProperties& b) 108 { 109 return !(a == b); 110 } 111 112 } // namespace blink 113 114 #endif // MatchResult_h 115