59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* An implementation of Rooted for RefPtr<T>. This works by assuming that T has
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* a Trace() method defined on it which will trace whatever things inside the T
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* instance need tracing.
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*
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* This implementation has one serious drawback: operator= doesn't work right
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* because it's declared on Rooted directly and expects the type Rooted is
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* templated over.
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*/
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#ifndef mozilla_RootedRefPtr_h__
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#define mozilla_RootedRefPtr_h__
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#include "mozilla/RefPtr.h"
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#include "js/GCPolicyAPI.h"
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#include "js/RootingAPI.h"
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namespace JS {
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template<typename T>
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struct GCPolicy<RefPtr<T>>
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{
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static RefPtr<T> initial() {
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return RefPtr<T>();
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}
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static void trace(JSTracer* trc, RefPtr<T>* tp, const char* name)
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{
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if (*tp) {
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(*tp)->Trace(trc);
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}
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}
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};
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} // namespace JS
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namespace js {
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template<typename T>
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struct RootedBase<RefPtr<T>>
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{
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operator RefPtr<T>& () const
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{
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auto& self = *static_cast<const JS::Rooted<RefPtr<T>>*>(this);
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return self.get();
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}
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operator T*() const
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{
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auto& self = *static_cast<const JS::Rooted<RefPtr<T>>*>(this);
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return self.get();
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}
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};
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} // namespace js
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#endif /* mozilla_RootedRefPtr_h__ */
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