/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* 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/. */

#include "InstanceProvider.h"

#include "Instance.h"

#include "mozilla/dom/WebGPUBinding.h"

namespace mozilla {

namespace webgpu {

InstanceProvider::InstanceProvider(nsIGlobalObject* const global)

    : mGlobal(global)

{ }

InstanceProvider::~InstanceProvider() = default;

already_AddRefed<Instance>

InstanceProvider::Webgpu() const

{

    if (!mInstance) {

        const auto inst = Instance::Create(mGlobal);

        mInstance = Some(inst);

    }

    auto ret = mInstance.value();

    return ret.forget();

}

void

InstanceProvider::CcTraverse(nsCycleCollectionTraversalCallback& callback) const

{

    if (mInstance) {

        CycleCollectionNoteChild(callback, mInstance.ref().get(),

                                 "webgpu::InstanceProvider::mInstance", 0);

    }

}

void

InstanceProvider::CcUnlink()

{

    mInstance = Some(nullptr);

}

} // namespace webgpu

} // namespace mozilla