/// <summary>
/// Transform this <see cref="Flow{TIn,TOut,TMat}"/> by appending the given processing steps.
/// The <paramref name="combine"/> function is used to compose the materialized values of this flow and that
/// flow into the materialized value of the resulting Flow.
/// </summary>
public Flow <TIn, TOut2, TMat3> ViaMaterialized <TOut2, TMat2, TMat3>(IGraph <FlowShape <TOut, TOut2>, TMat2> flow,
Func <TMat, TMat2, TMat3> combine)
{
if (IsIdentity)
{
var m = flow.Module;
StreamLayout.IMaterializedValueNode materializedValueNode;
if (Keep.IsLeft(combine))
{
if (IgnorableMaterializedValueComposites.Apply(m))
{
materializedValueNode = StreamLayout.Ignore.Instance;
}
else
{
materializedValueNode = new StreamLayout.Transform(_ => NotUsed.Instance,
new StreamLayout.Atomic(m));
}
}
else
{
materializedValueNode = new StreamLayout.Combine((o, o1) => combine((TMat)o, (TMat2)o1),
StreamLayout.Ignore.Instance, new StreamLayout.Atomic(m));
}
return
(new Flow <TIn, TOut2, TMat3>(new CompositeModule(ImmutableArray <IModule> .Empty.Add(m), m.Shape,
ImmutableDictionary <OutPort, InPort> .Empty, ImmutableDictionary <InPort, OutPort> .Empty,
materializedValueNode, Attributes.None)));
}
var copy = flow.Module.CarbonCopy();
return(new Flow <TIn, TOut2, TMat3>(Module
.Fuse(copy, Shape.Outlet, copy.Shape.Inlets.First(), combine)
.ReplaceShape(new FlowShape <TIn, TOut2>(Shape.Inlet, (Outlet <TOut2>)copy.Shape.Outlets.First()))));
}
/// <summary>
/// Transform this <see cref="Source{TOut,TMat}"/> by appending the given processing steps.
/// The <paramref name="combine"/> function is used to compose the materialized values of this flow and that
/// flow into the materialized value of the resulting Flow.
/// </summary>
/// <typeparam name="TOut2">TBD</typeparam>
/// <typeparam name="TMat2">TBD</typeparam>
/// <typeparam name="TMat3">TBD</typeparam>
/// <param name="flow">TBD</param>
/// <param name="combine">TBD</param>
/// <returns>TBD</returns>
public Source <TOut2, TMat3> ViaMaterialized <TOut2, TMat2, TMat3>(IGraph <FlowShape <TOut, TOut2>, TMat2> flow, Func <TMat, TMat2, TMat3> combine)
{
if (flow.Module == GraphStages.Identity <TOut2>().Module)
{
if (Keep.IsLeft(combine))
{
return(this as Source <TOut2, TMat3>);
}
if (Keep.IsRight(combine))
{
return(MapMaterializedValue(_ => NotUsed.Instance) as Source <TOut2, TMat3>);
}
return(MapMaterializedValue(value => combine(value, (TMat2)(object)NotUsed.Instance)) as Source <TOut2, TMat3>);
}
var flowCopy = flow.Module.CarbonCopy();
return(new Source <TOut2, TMat3>(Module
.Fuse(flowCopy, Shape.Outlet, flowCopy.Shape.Inlets.First(), combine)
.ReplaceShape(new SourceShape <TOut2>((Outlet <TOut2>)flowCopy.Shape.Outlets.First()))));
}
