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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CLASS_REQUIRES_TRACE_METHOD_H_ |
| 6 #define CLASS_REQUIRES_TRACE_METHOD_H_ |
| 7 |
| 8 #include "heap/stubs.h" |
| 9 |
| 10 namespace blink { |
| 11 |
| 12 class HeapObject; |
| 13 |
| 14 class PartObject { |
| 15 DISALLOW_ALLOCATION(); |
| 16 private: |
| 17 Member<HeapObject> m_obj; |
| 18 }; |
| 19 |
| 20 class HeapObject : public GarbageCollected<HeapObject> { |
| 21 private: |
| 22 PartObject m_part; |
| 23 }; |
| 24 |
| 25 class Mixin : public GarbageCollectedMixin { |
| 26 public: |
| 27 virtual void trace(Visitor*) override; |
| 28 Member<Mixin> m_self; |
| 29 }; |
| 30 |
| 31 class HeapObjectMixin : public GarbageCollected<HeapObjectMixin>, public Mixin { |
| 32 USING_GARBAGE_COLLECTED_MIXIN(HeapObjectMixin); |
| 33 }; |
| 34 |
| 35 class Mixin2 : public Mixin { |
| 36 public: |
| 37 virtual void trace(Visitor*) override; |
| 38 }; |
| 39 |
| 40 class HeapObjectMixin2 |
| 41 : public GarbageCollected<HeapObjectMixin2>, public Mixin2 { |
| 42 USING_GARBAGE_COLLECTED_MIXIN(HeapObjectMixin2); |
| 43 }; |
| 44 |
| 45 class Mixin3 : public Mixin { |
| 46 public: |
| 47 virtual void trace(Visitor*) override; |
| 48 }; |
| 49 |
| 50 class HeapObjectMixin3 |
| 51 : public GarbageCollected<HeapObjectMixin3>, public Mixin { |
| 52 USING_GARBAGE_COLLECTED_MIXIN(HeapObjectMixin2); |
| 53 public: |
| 54 virtual void trace(Visitor*) override; |
| 55 }; |
| 56 |
| 57 } |
| 58 |
| 59 #endif |
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