/* -*- 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/. */

/* Smart pointer which leaks its owning refcounted object by default. */

#ifndef LeakRefPtr_h

#define LeakRefPtr_h

#include "mozilla/AlreadyAddRefed.h"

namespace mozilla {

/**

 * Instance of this class behaves like a raw pointer which leaks the

 * resource it's owning if not explicitly released.

 */

template<class T>

class LeakRefPtr

{

public:

  explicit LeakRefPtr(already_AddRefed<T>&& aPtr)

    : mRawPtr(aPtr.take()) { }

  explicit operator bool() const { return !!mRawPtr; }

  LeakRefPtr<T>& operator=(already_AddRefed<T>&& aPtr)

  {

    mRawPtr = aPtr.take();

    return *this;

  }

  T* get() const { return mRawPtr; }

  already_AddRefed<T> take()

  {

    T* rawPtr = mRawPtr;

    mRawPtr = nullptr;

    return already_AddRefed<T>(rawPtr);

  }

  void release() { NS_RELEASE(mRawPtr); }

private:

  T* MOZ_OWNING_REF mRawPtr;

};

} // namespace mozilla

#endif // LeakRefPtr_h