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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
3 // found in the LICENSE file.
4 
5 #ifndef FIELDS_ILLEGAL_TRACING_H_
6 #define FIELDS_ILLEGAL_TRACING_H_
7 
8 #include "heap/stubs.h"
9 
10 namespace blink {
11 
12 namespace bar {
13 
14 // check that (only) std::unique_ptr<> is reported
15 // as an illegal smart pointer type.
16 template<typename T> class unique_ptr {
17 public:
~unique_ptr()18     ~unique_ptr() { }
19     operator T*() const { return 0; }
20     T* operator->() { return 0; }
21 
trace(Visitor * visitor)22     void trace(Visitor* visitor)
23     {
24     }
25 };
26 
27 }
28 
29 class HeapObject;
30 class PartObject;
31 
32 class PartObject {
33     DISALLOW_NEW();
34 public:
35     void trace(Visitor*);
36 private:
37     OwnPtr<HeapObject> m_obj1;
38     RefPtr<HeapObject> m_obj2;
39     bar::unique_ptr<HeapObject> m_obj3;
40     std::unique_ptr<HeapObject> m_obj4;
41 };
42 
43 class HeapObject : public GarbageCollectedFinalized<HeapObject> {
44 public:
45     void trace(Visitor*);
46 private:
47     PartObject m_part;
48     OwnPtr<HeapObject> m_obj1;
49     RefPtr<HeapObject> m_obj2;
50     bar::unique_ptr<HeapObject> m_obj3;
51     std::unique_ptr<HeapObject> m_obj4;
52 };
53 
54 }
55 
56 #endif
57