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 FIELDS_REQUIRE_TRACING_H_
6 #define FIELDS_REQUIRE_TRACING_H_
7 
8 #include "heap/stubs.h"
9 
10 namespace blink {
11 
12 class HeapObject;
13 class PartObject;
14 
15 class PartBObject {
16     DISALLOW_NEW();
17 public:
18     void Trace(Visitor*);
19 private:
20     HeapHashSet<PartBObject> m_set;
21     HeapVector<PartBObject> m_vector;
22 };
23 
24 class PartObject {
25     DISALLOW_NEW();
26 public:
27     void Trace(Visitor*);
28 private:
29     Member<HeapObject> m_obj1;
30     Member<HeapObject> m_obj2;
31     Member<HeapObject> m_obj3;
32 
33     HeapVector<PartBObject> m_parts;
34 };
35 
36 class HeapObject : public GarbageCollected<HeapObject> {
37 public:
38     void Trace(Visitor*);
39 private:
40     PartObject m_part;
41     Member<HeapObject> m_obj;
42 };
43 
44 }
45 
46 #endif
47