protected override Expression <Func <IReactiveProxy, Task> > VisitObserverOnCompletedCore <T>(ObserverOnCompleted <T> operation)
{
var binder = new IdentityAwareBinder();
var boundParameter = binder.Bind(Expression.Parameter(typeof(IAsyncReactiveQbserver <T>), operation.TargetObjectUri.ToCanonicalString()));
var thisParameter = FreeVariableScanner.Scan(boundParameter).Single();
var onCompletedMethod = boundParameter.Type.GetMethod("OnCompletedAsync");
return(Expression.Lambda <Func <IReactiveProxy, Task> >(
Expression.Call(
boundParameter,
onCompletedMethod,
Expression.Constant(CancellationToken.None)),
thisParameter));
}
protected override Expression <Func <IReactiveProxy, Task> > VisitCreateStream(CreateStream operation)
{
var binder = new IdentityAwareBinder();
var boundStream = (LambdaExpression)binder.BindStream(operation.Expression, operation.TargetObjectUri, operation.State, CancellationToken.None);
var parameter = boundStream.Parameters[0];
return(Reduce(
Expression.Lambda <Func <IReactiveProxy, Task> >(
Expression.Convert(
boundStream.Body,
typeof(Task)
),
parameter
)
));
}
protected override Expression <Func <IReactiveProxy, Task> > VisitDefineObserver(DefineObserver operation)
{
var binder = new IdentityAwareBinder();
return(Reduce((Expression <Func <IReactiveProxy, Task> >)binder.BindObserver(operation.Expression, operation.TargetObjectUri, operation.State, CancellationToken.None)));
}
