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47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef js_WeakMapPtr_h
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#define js_WeakMapPtr_h
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#include "jspubtd.h"
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#include "js/TypeDecls.h"
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namespace JS {
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// A wrapper around the internal C++ representation of SpiderMonkey WeakMaps,
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// usable outside the engine.
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//
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// The supported template specializations are enumerated in WeakMapPtr.cpp. If
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// you want to use this class for a different key/value combination, add it to
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// the list and the compiler will generate the relevant machinery.
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template <typename K, typename V>
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class JS_PUBLIC_API(WeakMapPtr)
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{
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public:
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WeakMapPtr() : ptr(nullptr) {}
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bool init(JSContext* cx);
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bool initialized() { return ptr != nullptr; }
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void destroy();
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virtual ~WeakMapPtr() { MOZ_ASSERT(!initialized()); }
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void trace(JSTracer* tracer);
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V lookup(const K& key);
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bool put(JSContext* cx, const K& key, const V& value);
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private:
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void* ptr;
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// WeakMapPtr is neither copyable nor assignable.
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WeakMapPtr(const WeakMapPtr& wmp) = delete;
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WeakMapPtr& operator=(const WeakMapPtr& wmp) = delete;
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};
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} /* namespace JS */
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#endif /* js_WeakMapPtr_h */
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