synchronized void build()

in src/main/java/com/jetbrains/jdi/EventSetImpl.java [634:712]
62 lines of code
19 McCabe index (conditional complexity)

    synchronized void build() {
        if (pkt == null) {
            return;
        }
        PacketStream ps = new PacketStream(vm, pkt);
        JDWP.Event.Composite compEvt = new JDWP.Event.Composite(vm, ps);
        suspendPolicy = compEvt.suspendPolicy;
        if ((vm.traceFlags & VirtualMachine.TRACE_EVENTS) != 0) {
            switch(suspendPolicy) {
                case JDWP.SuspendPolicy.ALL:
                    vm.printTrace("EventSet: SUSPEND_ALL");
                    break;

                case JDWP.SuspendPolicy.EVENT_THREAD:
                    vm.printTrace("EventSet: SUSPEND_EVENT_THREAD");
                    break;

                case JDWP.SuspendPolicy.NONE:
                    vm.printTrace("EventSet: SUSPEND_NONE");
                    break;
            }
        }

        ThreadReference fix6485605 = null;
        for (int i = 0; i < compEvt.events.length; i++) {
            EventImpl evt = createEvent(compEvt.events[i]);
            if ((vm.traceFlags & VirtualMachine.TRACE_EVENTS) != 0) {
                try {
                    vm.printTraceSafe(() -> "Event: " + evt);
                } catch (VMDisconnectedException ee) {
                    // ignore - see bug 6502716
                }
            }

            switch (evt.destination()) {
                case UNKNOWN_EVENT:
                    // Ignore disabled, deleted, unknown events, but
                    // save the thread if there is one since we might
                    // have to resume it.  Note that events for different
                    // threads can't be in the same event set.
                    if (evt instanceof ThreadedEventImpl &&
                        suspendPolicy == JDWP.SuspendPolicy.EVENT_THREAD) {
                        fix6485605 = ((ThreadedEventImpl)evt).thread();
                    }
                    continue;
                case CLIENT_EVENT:
                    addEvent(evt);
                    break;
                case INTERNAL_EVENT:
                    if (internalEventSet == null) {
                        internalEventSet = new EventSetImpl(this.vm, null);
                    }
                    internalEventSet.addEvent(evt);
                    break;
                default:
                    throw new InternalException("Invalid event destination");
            }
        }
        pkt = null; // No longer needed - free it up

        // Avoid hangs described in 6296125, 6293795
        if (super.size() == 0) {
            // This set has no client events.  If we don't do
            // needed resumes, no one else is going to.
            if (suspendPolicy == JDWP.SuspendPolicy.ALL) {
                vm.resume();
            } else if (suspendPolicy == JDWP.SuspendPolicy.EVENT_THREAD) {
                // See bug 6485605.
                if (fix6485605 != null) {
                    fix6485605.resume();
                } else {
                    // apparently, there is nothing to resume.
                }
            }
            suspendPolicy = JDWP.SuspendPolicy.NONE;

        }

    }