1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/public/WeakMapPtr.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,48 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef js_WeakMapPtr_h
1.11 +#define js_WeakMapPtr_h
1.12 +
1.13 +#include "jspubtd.h"
1.14 +
1.15 +#include "js/TypeDecls.h"
1.16 +
1.17 +namespace JS {
1.18 +
1.19 +// A wrapper around the internal C++ representation of SpiderMonkey WeakMaps,
1.20 +// usable outside the engine.
1.21 +//
1.22 +// The supported template specializations are enumerated in WeakMapPtr.cpp. If
1.23 +// you want to use this class for a different key/value combination, add it to
1.24 +// the list and the compiler will generate the relevant machinery.
1.25 +template <typename K, typename V>
1.26 +class JS_PUBLIC_API(WeakMapPtr)
1.27 +{
1.28 + public:
1.29 + WeakMapPtr() : ptr(nullptr) {};
1.30 + bool init(JSContext *cx);
1.31 + bool initialized() { return ptr != nullptr; };
1.32 + void destroy();
1.33 + virtual ~WeakMapPtr() { MOZ_ASSERT(!initialized()); }
1.34 + void trace(JSTracer *tracer);
1.35 +
1.36 + V lookup(const K &key);
1.37 + bool put(JSContext *cx, const K &key, const V &value);
1.38 +
1.39 + static void keyMarkCallback(JSTracer *trc, K key, void *data);
1.40 +
1.41 + private:
1.42 + void *ptr;
1.43 +
1.44 + // WeakMapPtr is neither copyable nor assignable.
1.45 + WeakMapPtr(const WeakMapPtr &wmp) MOZ_DELETE;
1.46 + WeakMapPtr &operator=(const WeakMapPtr &wmp) MOZ_DELETE;
1.47 +};
1.48 +
1.49 +} /* namespace JS */
1.50 +
1.51 +#endif /* js_WeakMapPtr_h */
