private static T Deserialize <T>(FactGraph graph, FactReference reference)
{
var emitter = new Emitter(graph, DeserializerCache.Empty);
var runtimeFact = emitter.Deserialize <T>(reference);
return(runtimeFact);
}
public TFact Deserialize <TFact>(FactReference reference)
{
Type type = typeof(TFact);
object runtimeFact = DeserializeToType(reference, type);
return((TFact)runtimeFact);
}
public TFact Deserialize <TFact>(FactGraph graph, FactReference reference)
{
lock (this)
{
var emitter = new Emitter(graph, deserializerCache);
var fact = emitter.Deserialize <TFact>(reference);
deserializerCache = emitter.DeserializerCache;
return(fact);
}
}
private ImmutableList <Product> ExecutePipeline(FactReference startReference, Pipeline pipeline)
{
var initialTag = pipeline.Starts.Single().Name;
var startingProducts = new Product[]
{
Product.Empty.With(initialTag, new SimpleElement(startReference))
}.ToImmutableList();
return(pipeline.Paths.Aggregate(
startingProducts,
(products, path) => ExecutePath(products, path, pipeline)
));
}
private ImmutableList <FactReference> ExecuteSteps(FactReference startingFactReference, Path path)
{
var startingSet = new FactReference[] { startingFactReference }.ToImmutableList();
var afterPredecessors = path.PredecessorSteps
.Aggregate(startingSet, (set, predecessorStep) => ExecutePredecessorStep(
set, predecessorStep.Role, predecessorStep.TargetType
));
var afterSuccessors = path.SuccessorSteps
.Aggregate(afterPredecessors, (set, successorStep) => ExecuteSuccessorStep(
set, successorStep.Role, successorStep.TargetType
));
return(afterSuccessors);
}
private ImmutableList <FactReference> ExecuteSteps(Element element, FactGraph graph)
{
if (element is SimpleElement simple)
{
var startingFactReference = simple.FactReference;
var startingSet = new FactReference[] { startingFactReference }.ToImmutableList();
var afterPredecessors = PredecessorSteps
.Aggregate(startingSet, (set, predecessorStep) => ExecutePredecessorStep(
set, predecessorStep.Role, predecessorStep.TargetType, graph
));
return(afterPredecessors);
}
else
{
throw new NotImplementedException();
}
}
public object DeserializeToType(FactReference reference, Type type)
{
if (!objectByReference.TryGetValue(reference, out var runtimeFact))
{
var(newCache, deserializer) = DeserializerCache.GetDeserializer(type);
DeserializerCache = newCache;
try
{
runtimeFact = deserializer(graph.GetFact(reference), this);
objectByReference = objectByReference.Add(reference, runtimeFact);
}
catch (TargetInvocationException tie)
{
throw tie.InnerException;
}
}
return(runtimeFact);
}
public SimpleElement(FactReference factReference)
{
FactReference = factReference;
}
private bool ConditionIsTrue(FactReference factReference, Pipeline pipeline, bool wantAny)
{
var hasAny = ExecutePipeline(factReference, pipeline).Any();
return(wantAny && hasAny || !wantAny && !hasAny);
}
public Edge(FactReference predecessor, string role, FactReference successor)
{
Predecessor = predecessor;
Role = role;
Successor = successor;
}
public ImmutableList <Product> Execute(FactReference startReference, FactGraph graph)
{
return(Execute(ImmutableList <FactReference> .Empty.Add(startReference), graph));
}