/* -*- 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/. */

#include "mozilla/HoldDropJSObjects.h"

#include "mozilla/Assertions.h"

#include "mozilla/CycleCollectedJSRuntime.h"

namespace mozilla {

namespace cyclecollector {

void

HoldJSObjectsImpl(void* aHolder, nsScriptObjectTracer* aTracer)

{

  CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();

  MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");

  rt->AddJSHolder(aHolder, aTracer);

}

void

HoldJSObjectsImpl(nsISupports* aHolder)

{

  nsXPCOMCycleCollectionParticipant* participant = nullptr;

  CallQueryInterface(aHolder, &participant);

  MOZ_ASSERT(participant, "Failed to QI to nsXPCOMCycleCollectionParticipant!");

  MOZ_ASSERT(participant->CheckForRightISupports(aHolder),

             "The result of QIing a JS holder should be the same as ToSupports");

  HoldJSObjectsImpl(aHolder, participant);

}

void

DropJSObjectsImpl(void* aHolder)

{

  CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();

  MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");

  rt->RemoveJSHolder(aHolder);

}

void

DropJSObjectsImpl(nsISupports* aHolder)

{

#ifdef DEBUG

  nsXPCOMCycleCollectionParticipant* participant = nullptr;

  CallQueryInterface(aHolder, &participant);

  MOZ_ASSERT(participant, "Failed to QI to nsXPCOMCycleCollectionParticipant!");

  MOZ_ASSERT(participant->CheckForRightISupports(aHolder),

             "The result of QIing a JS holder should be the same as ToSupports");

#endif

  DropJSObjectsImpl(static_cast<void*>(aHolder));

}

} // namespace cyclecollector

#ifdef DEBUG

bool

IsJSHolder(void* aHolder)

{

  CycleCollectedJSRuntime* rt = CycleCollectedJSRuntime::Get();

  MOZ_ASSERT(rt, "Should have a CycleCollectedJSRuntime by now");

  return rt->IsJSHolder(aHolder);

}

#endif

} // namespace mozilla