PassOwnPtr<MessagePortChannelArray> MessagePort::disentanglePorts(const MessagePortArray* ports, ExceptionState& exceptionState)
{
if (!ports || !ports->size())
return nullptr;
// HashSet used to efficiently check for duplicates in the passed-in array.
HashSet<MessagePort*> portSet;
// Walk the incoming array - if there are any duplicate ports, or null ports or cloned ports, throw an error (per section 8.3.3 of the HTML5 spec).
for (unsigned i = 0; i < ports->size(); ++i) {
MessagePort* port = (*ports)[i].get();
if (!port || port->isNeutered() || portSet.contains(port)) {
String type;
if (!port)
type = "null";
else if (port->isNeutered())
type = "already neutered";
else
type = "a duplicate";
exceptionState.throwDOMException(DataCloneError, "Port at index " + String::number(i) + " is " + type + ".");
return nullptr;
}
portSet.add(port);
}
// Passed-in ports passed validity checks, so we can disentangle them.
OwnPtr<MessagePortChannelArray> portArray = adoptPtr(new MessagePortChannelArray(ports->size()));
for (unsigned i = 0; i < ports->size(); ++i)
(*portArray)[i] = (*ports)[i]->disentangle();
return portArray.release();
}
std::unique_ptr<MessagePortChannelArray> MessagePort::disentanglePorts(const MessagePortArray* ports, ExceptionCode& ec)
{
if (!ports || !ports->size())
return nullptr;
// HashSet used to efficiently check for duplicates in the passed-in array.
HashSet<MessagePort*> portSet;
// Walk the incoming array - if there are any duplicate ports, or null ports or cloned ports, throw an error (per section 8.3.3 of the HTML5 spec).
for (unsigned int i = 0; i < ports->size(); ++i) {
MessagePort* port = (*ports)[i].get();
if (!port || port->isNeutered() || portSet.contains(port)) {
ec = DATA_CLONE_ERR;
return nullptr;
}
portSet.add(port);
}
// Passed-in ports passed validity checks, so we can disentangle them.
auto portArray = std::make_unique<MessagePortChannelArray>(ports->size());
for (unsigned int i = 0 ; i < ports->size() ; ++i) {
std::unique_ptr<MessagePortChannel> channel = (*ports)[i]->disentangle();
(*portArray)[i] = std::move(channel);
}
return portArray;
}
std::unique_ptr<MessagePortChannelArray> MessagePort::disentanglePorts(
ExecutionContext* context,
const MessagePortArray& ports,
ExceptionState& exceptionState) {
if (!ports.size())
return nullptr;
HeapHashSet<Member<MessagePort>> visited;
// Walk the incoming array - if there are any duplicate ports, or null ports
// or cloned ports, throw an error (per section 8.3.3 of the HTML5 spec).
for (unsigned i = 0; i < ports.size(); ++i) {
MessagePort* port = ports[i];
if (!port || port->isNeutered() || visited.contains(port)) {
String type;
if (!port)
type = "null";
else if (port->isNeutered())
type = "already neutered";
else
type = "a duplicate";
exceptionState.throwDOMException(
DataCloneError,
"Port at index " + String::number(i) + " is " + type + ".");
return nullptr;
}
visited.add(port);
}
UseCounter::count(context, UseCounter::MessagePortsTransferred);
// Passed-in ports passed validity checks, so we can disentangle them.
std::unique_ptr<MessagePortChannelArray> portArray =
wrapUnique(new MessagePortChannelArray(ports.size()));
for (unsigned i = 0; i < ports.size(); ++i)
(*portArray)[i] = ports[i]->disentangle();
return portArray;
}
