/// <inheritdoc/>
public virtual async ValueTask <IFact> CalculateFactAsync <TFactRule, TWantAction, TFactContainer>(NodeByFactRule <TFactRule> node, IWantActionContext <TWantAction, TFactContainer> context)
where TFactRule : IFactRule
where TWantAction : IWantAction
where TFactContainer : IFactContainer
{
(var rule, var buildSuccessConditions, var runtimeConditions) =
(node.Info.Rule, node.Info.BuildSuccessConditions, node.Info.RuntimeConditions);
foreach (IRuntimeConditionFact condition in runtimeConditions)
{
(bool calculated, IFact result) = await TryCalculateFactByRuntimeConditionAsync(rule, condition, context);
if (calculated)
{
return(result);
}
}
using (var writer = context.Container.GetWriter())
{
buildSuccessConditions.ForEach(writer.Add);
runtimeConditions.ForEach(writer.Add);
}
var requiredFacts = GetRequireFacts(rule, context);
if (!CanInvokeWork(requiredFacts, rule, context.Cache))
{
throw CommonHelper.CreateDeriveException(ErrorCode.InvalidOperation, $"Can't calculate the '{rule}' rule.", context.WantAction, context.Container);
}
IFact fact = await Factory
.CreateObject(facts => rule.CalculateAsync(facts), requiredFacts)
.ConfigureAwait(false);
fact.SetCalculateByRule();
context.WantAction.AddUsedRule(rule);
using (var writer = context.Container.GetWriter())
{
buildSuccessConditions.ForEach(writer.Remove);
runtimeConditions.ForEach(writer.Remove);
}
return(fact);
}