Maybe<IProtocol*>
IProtocol::ReadActor(const IPC::Message* aMessage, PickleIterator* aIter, bool aNullable,
const char* aActorDescription, int32_t aProtocolTypeId)
{
int32_t id;
if (!IPC::ReadParam(aMessage, aIter, &id)) {
ActorIdReadError(aActorDescription);
return Nothing();
}
if (id == 1 || (id == 0 && !aNullable)) {
BadActorIdError(aActorDescription);
return Nothing();
}
if (id == 0) {
return Some(static_cast<IProtocol*>(nullptr));
}
IProtocol* listener = this->Lookup(id);
if (!listener) {
ActorLookupError(aActorDescription);
return Nothing();
}
if (listener->GetProtocolTypeId() != aProtocolTypeId) {
MismatchedActorTypeError(aActorDescription);
return Nothing();
}
return Some(listener);
}
nsresult
SerializeUntyped(BlobImpl* aBlobImpl, IProtocol* aActor, IPCBlob& aIPCBlob)
{
// We always want to act on the toplevel protocol.
IProtocol* manager = aActor;
while (manager->Manager()) {
manager = manager->Manager();
}
// We always need the toplevel protocol
switch(manager->GetProtocolTypeId()) {
case PBackgroundMsgStart:
if (manager->GetSide() == mozilla::ipc::ParentSide) {
return SerializeInternal(aBlobImpl,
static_cast<PBackgroundParent*>(manager),
aIPCBlob);
} else {
return SerializeInternal(aBlobImpl,
static_cast<PBackgroundChild*>(manager),
aIPCBlob);
}
case PContentMsgStart:
if (manager->GetSide() == mozilla::ipc::ParentSide) {
return SerializeInternal(aBlobImpl,
static_cast<ContentParent*>(manager),
aIPCBlob);
} else {
return SerializeInternal(aBlobImpl,
static_cast<ContentChild*>(manager),
aIPCBlob);
}
default:
MOZ_CRASH("Unsupported protocol passed to BlobImpl serialize");
}
}
