static void messageHandlerInMainThread(v8::Local<v8::Message> message, v8::Local<v8::Value> data)
{
ASSERT(isMainThread());
v8::Isolate* isolate = v8::Isolate::GetCurrent();
if (isolate->GetEnteredContext().IsEmpty())
return;
// If called during context initialization, there will be no entered context.
ScriptState* scriptState = ScriptState::current(isolate);
if (!scriptState->contextIsValid())
return;
ExecutionContext* context = scriptState->getExecutionContext();
std::unique_ptr<SourceLocation> location = SourceLocation::fromMessage(isolate, message, context);
AccessControlStatus accessControlStatus = NotSharableCrossOrigin;
if (message->IsOpaque())
accessControlStatus = OpaqueResource;
else if (message->IsSharedCrossOrigin())
accessControlStatus = SharableCrossOrigin;
ErrorEvent* event = ErrorEvent::create(toCoreStringWithNullCheck(message->Get()), std::move(location), &scriptState->world());
String messageForConsole = extractMessageForConsole(isolate, data);
if (!messageForConsole.isEmpty())
event->setUnsanitizedMessage("Uncaught " + messageForConsole);
// This method might be called while we're creating a new context. In this case, we
// avoid storing the exception object, as we can't create a wrapper during context creation.
// FIXME: Can we even get here during initialization now that we bail out when GetEntered returns an empty handle?
if (context->isDocument()) {
LocalFrame* frame = toDocument(context)->frame();
if (frame && frame->script().existingWindowProxy(scriptState->world())) {
V8ErrorHandler::storeExceptionOnErrorEventWrapper(scriptState, event, data, scriptState->context()->Global());
}
}
if (scriptState->world().isPrivateScriptIsolatedWorld()) {
// We allow a private script to dispatch error events even in a EventDispatchForbiddenScope scope.
// Without having this ability, it's hard to debug the private script because syntax errors
// in the private script are not reported to console (the private script just crashes silently).
// Allowing error events in private scripts is safe because error events don't propagate to
// other isolated worlds (which means that the error events won't fire any event listeners
// in user's scripts).
EventDispatchForbiddenScope::AllowUserAgentEvents allowUserAgentEvents;
context->reportException(event, accessControlStatus);
} else {
context->reportException(event, accessControlStatus);
}
}
