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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TRACEIMPL_DEPENDENT_SCOPE_H_
#define TRACEIMPL_DEPENDENT_SCOPE_H_
#include "heap/stubs.h"
namespace blink {
class X : public GarbageCollected<X> {
public:
virtual void trace(Visitor*) {}
};
template <typename T>
class Base : public GarbageCollected<Base<T> > {
public:
virtual void trace(Visitor* visitor) { traceImpl(visitor); }
virtual void trace(InlinedGlobalMarkingVisitor visitor) {
traceImpl(visitor);
}
private:
template <typename VisitorDispatcher>
void traceImpl(VisitorDispatcher visitor) {}
};
template <typename T>
class Derived : public Base<T> {
public:
void trace(Visitor* visitor) override { traceImpl(visitor); }
void trace(InlinedGlobalMarkingVisitor visitor) override {
traceImpl(visitor);
}
private:
template <typename VisitorDispatcher>
void traceImpl(VisitorDispatcher visitor) {
Base<T>::trace(visitor);
}
};
template <typename T>
class DerivedMissingTrace : public Base<T> {
public:
void trace(Visitor* visitor) override { traceImpl(visitor); }
void trace(InlinedGlobalMarkingVisitor visitor) override {
traceImpl(visitor);
}
private:
template <typename VisitorDispatcher>
void traceImpl(VisitorDispatcher visitor) {
// Missing Base<T>::trace(visitor).
}
};
}
#endif // TRACEIMPL_DEPENDENT_SCOPE_H_
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