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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef TRACEIMPL_DEPENDENT_SCOPE_H_ | 5 #ifndef TRACEIMPL_DEPENDENT_SCOPE_H_ |
6 #define TRACEIMPL_DEPENDENT_SCOPE_H_ | 6 #define TRACEIMPL_DEPENDENT_SCOPE_H_ |
7 | 7 |
8 #include "heap/stubs.h" | 8 #include "heap/stubs.h" |
9 | 9 |
10 namespace blink { | 10 namespace blink { |
11 | 11 |
12 class X : public GarbageCollected<X> { | 12 class X : public GarbageCollected<X> { |
13 public: | 13 public: |
14 virtual void Trace(Visitor*) {} | 14 virtual void Trace(Visitor*) {} |
15 }; | 15 }; |
16 | 16 |
17 template <typename T> | 17 template <typename T> |
18 class Base : public GarbageCollected<Base<T> > { | 18 class Base : public GarbageCollected<Base<T> > { |
19 public: | 19 public: |
20 virtual void Trace(Visitor* visitor) { TraceImpl(visitor); } | 20 virtual void Trace(Visitor* visitor) {} |
21 virtual void Trace(InlinedGlobalMarkingVisitor visitor) { | |
22 TraceImpl(visitor); | |
23 } | |
24 | |
25 private: | |
26 template <typename VisitorDispatcher> | |
27 void TraceImpl(VisitorDispatcher visitor) {} | |
28 }; | 21 }; |
29 | 22 |
30 template <typename T> | 23 template <typename T> |
31 class Derived : public Base<T> { | 24 class Derived : public Base<T> { |
32 public: | 25 public: |
33 void Trace(Visitor* visitor) override { TraceImpl(visitor); } | 26 void Trace(Visitor* visitor) override { Base<T>::Trace(visitor); } |
34 void Trace(InlinedGlobalMarkingVisitor visitor) override { | |
35 TraceImpl(visitor); | |
36 } | |
37 | |
38 private: | |
39 template <typename VisitorDispatcher> | |
40 void TraceImpl(VisitorDispatcher visitor) { | |
41 Base<T>::Trace(visitor); | |
42 } | |
43 }; | 27 }; |
44 | 28 |
45 template <typename T> | 29 template <typename T> |
46 class DerivedMissingTrace : public Base<T> { | 30 class DerivedMissingTrace : public Base<T> { |
47 public: | 31 public: |
48 void Trace(Visitor* visitor) override { TraceImpl(visitor); } | 32 void Trace(Visitor* visitor) override { |
49 void Trace(InlinedGlobalMarkingVisitor visitor) override { | |
50 TraceImpl(visitor); | |
51 } | |
52 | |
53 private: | |
54 template <typename VisitorDispatcher> | |
55 void TraceImpl(VisitorDispatcher visitor) { | |
56 // Missing Base<T>::Trace(visitor). | 33 // Missing Base<T>::Trace(visitor). |
57 } | 34 } |
58 }; | 35 }; |
59 | 36 |
60 } | 37 } |
61 | 38 |
62 #endif // TRACEIMPL_DEPENDENT_SCOPE_H_ | 39 #endif // TRACEIMPL_DEPENDENT_SCOPE_H_ |
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