/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this file, * You can obtain one at http://mozilla.org/MPL/2.0/. */ /** * An implementation of Rooted for RefPtr<T>. This works by assuming that T has * a Trace() method defined on it which will trace whatever things inside the T * instance need tracing. * * This implementation has one serious drawback: operator= doesn't work right * because it's declared on Rooted directly and expects the type Rooted is * templated over. */ #ifndef mozilla_RootedRefPtr_h__ #define mozilla_RootedRefPtr_h__ #include "mozilla/RefPtr.h" #include "js/GCPolicyAPI.h" #include "js/RootingAPI.h" namespace JS { template<typename T> struct GCPolicy<RefPtr<T>> { static RefPtr<T> initial() { return RefPtr<T>(); } static void trace(JSTracer* trc, RefPtr<T>* tp, const char* name) { if (*tp) { (*tp)->Trace(trc); } } }; } // namespace JS namespace js { template<typename T> struct RootedBase<RefPtr<T>> { operator RefPtr<T>& () const { auto& self = *static_cast<const JS::Rooted<RefPtr<T>>*>(this); return self.get(); } operator T*() const { auto& self = *static_cast<const JS::Rooted<RefPtr<T>>*>(this); return self.get(); } }; } // namespace js #endif /* mozilla_RootedRefPtr_h__ */