private string generateStepFlow(StepTiming timing, string nidReturn)
{
var firstNode = new NRFunctionNode();
var prev = firstNode;
foreach (var parTiming in timing.ParallelTimings)
{
var next = new NRJoinFunctionNode();
// prev will be written in this invocation.
generateParallelFlow(parTiming, prev, next);
prev = next;
}
// For understandability.
var last = prev;
last.Wire(nidReturn);
last.WriteTo(_writer);
return(firstNode.Id);
}
private void generateParallelFlow(ParallelTiming timing, NRFunctionNode prev, NRJoinFunctionNode next)
{
var svcmap = _activity.ServiceMap;
foreach (var anim in timing.Animations)
{
var service = svcmap.Lookup(anim.ShapeId);
if (null == service)
{
// No available service for the shape.
continue;
}
JObject flowObj;
using (var flow =
anim.Type == AnimationType.Entrance ?
service.ActivationFlow :
service.DeactivationFlow)
using (var flowReader = flow.Reader)
{
flowObj = (JObject)JToken.ReadFrom(flowReader);
}
var meta = (JObject)flowObj["meta"];
var nidIn = (string)meta["in"];
var nidOut = (string)meta["out"];
var topic =
$@"{service.nodeName}-{(anim.Type == AnimationType.Entrance ? "activation" : "deactivation")}";
var nodeTopic = new NRFunctionNode(func: $"msg.topic = '{topic}';return msg;");
nodeTopic.Wire(next.Id);
nodeTopic.WriteTo(_writer);
nidIn = generateCopyOfFlow((JArray)flowObj["flow"], nidIn, nidOut, nodeTopic.Id);
// If this animation effect has a delay, put a delay node.
var nidFirst = nidIn;
if (anim.HasDefiniteDelay && anim.Delay > 0)
{
var nodeDelay = new NRDelayNode(anim.Delay);
nodeDelay.Wire(nidIn);
nodeDelay.WriteTo(_writer);
nidFirst = nodeDelay.Id;
}
prev.Wire(nidFirst);
next.AddTopic(topic);
}
prev.WriteTo(_writer);
}