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Side by Side Diff: Source/core/css/CSSValueList.h

Issue 208313010: Replace raw pointers to GC allocated objects by members in stack allocated objects. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Make Dictionary allow_only_inline_alloc Created 6 years, 9 months ago
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1 /* 1 /*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org) 2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. 3 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
4 * 4 *
5 * This library is free software; you can redistribute it and/or 5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public 6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either 7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version. 8 * version 2 of the License, or (at your option) any later version.
9 * 9 *
10 * This library is distributed in the hope that it will be useful, 10 * This library is distributed in the hope that it will be useful,
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86 // Please take care not to pass these around as they do hold onto a raw pointer. 86 // Please take care not to pass these around as they do hold onto a raw pointer.
87 class CSSValueListInspector { 87 class CSSValueListInspector {
88 STACK_ALLOCATED(); 88 STACK_ALLOCATED();
89 public: 89 public:
90 CSSValueListInspector(CSSValue* value) : m_list((value && value->isValueList ()) ? toCSSValueList(value) : 0) { } 90 CSSValueListInspector(CSSValue* value) : m_list((value && value->isValueList ()) ? toCSSValueList(value) : 0) { }
91 CSSValue* item(size_t index) const { ASSERT_WITH_SECURITY_IMPLICATION(index < length()); return m_list->itemWithoutBoundsCheck(index); } 91 CSSValue* item(size_t index) const { ASSERT_WITH_SECURITY_IMPLICATION(index < length()); return m_list->itemWithoutBoundsCheck(index); }
92 CSSValue* first() const { return item(0); } 92 CSSValue* first() const { return item(0); }
93 CSSValue* second() const { return item(1); } 93 CSSValue* second() const { return item(1); }
94 size_t length() const { return m_list ? m_list->length() : 0; } 94 size_t length() const { return m_list ? m_list->length() : 0; }
95 private: 95 private:
96 CSSValueList* m_list; 96 RawPtrWillBeMember<CSSValueList> m_list;
97 }; 97 };
98 98
99 // Wrapper that can be used to iterate over any CSSValue. Non-list values and 0 behave as zero-length lists. 99 // Wrapper that can be used to iterate over any CSSValue. Non-list values and 0 behave as zero-length lists.
100 // Objects of this class are intended to be stack-allocated and scoped to a sing le function. 100 // Objects of this class are intended to be stack-allocated and scoped to a sing le function.
101 // Please take care not to pass these around as they do hold onto a raw pointer. 101 // Please take care not to pass these around as they do hold onto a raw pointer.
102 class CSSValueListIterator { 102 class CSSValueListIterator {
103 STACK_ALLOCATED(); 103 STACK_ALLOCATED();
104 public: 104 public:
105 CSSValueListIterator(CSSValue* value) : m_inspector(value), m_position(0) { } 105 CSSValueListIterator(CSSValue* value) : m_inspector(value), m_position(0) { }
106 bool hasMore() const { return m_position < m_inspector.length(); } 106 bool hasMore() const { return m_position < m_inspector.length(); }
107 CSSValue* value() const { return m_inspector.item(m_position); } 107 CSSValue* value() const { return m_inspector.item(m_position); }
108 bool isPrimitiveValue() const { return value()->isPrimitiveValue(); } 108 bool isPrimitiveValue() const { return value()->isPrimitiveValue(); }
109 void advance() { m_position++; ASSERT(m_position <= m_inspector.length());} 109 void advance() { m_position++; ASSERT(m_position <= m_inspector.length());}
110 size_t index() const { return m_position; } 110 size_t index() const { return m_position; }
111 private: 111 private:
112 CSSValueListInspector m_inspector; 112 CSSValueListInspector m_inspector;
113 size_t m_position; 113 size_t m_position;
114 }; 114 };
115 115
116 } // namespace WebCore 116 } // namespace WebCore
117 117
118 #endif // CSSValueList_h 118 #endif // CSSValueList_h
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