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| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef TRACEIMPL_DERIVED_FROM_TEMPLATED_BASE_H_ |
| 6 #define TRACEIMPL_DERIVED_FROM_TEMPLATED_BASE_H_ |
| 7 |
| 8 #include "heap/stubs.h" |
| 9 |
| 10 namespace blink { |
| 11 |
| 12 class X : public GarbageCollected<X> { |
| 13 public: |
| 14 virtual void trace(Visitor*) {} |
| 15 }; |
| 16 |
| 17 template <int Y> |
| 18 class TraceImplTemplatedBase |
| 19 : public GarbageCollected<TraceImplTemplatedBase<Y> > { |
| 20 public: |
| 21 void trace(Visitor* visitor) { traceImpl(visitor); } |
| 22 |
| 23 template <typename VisitorDispatcher> |
| 24 void traceImpl(VisitorDispatcher visitor) { |
| 25 visitor->trace(x_); |
| 26 } |
| 27 |
| 28 private: |
| 29 Member<X> x_; |
| 30 }; |
| 31 |
| 32 class TraceImplDerivedFromTemplatedBase : public TraceImplTemplatedBase<0> { |
| 33 }; |
| 34 |
| 35 } |
| 36 |
| 37 #endif // TRACEIMPL_DERIVED_FROM_TEMPLATED_BASE_H_ |
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