public static Func <T, IPromise> ReturnPromise <T>(this Action <T> fn, PromiseFactory factory)
{
return(x =>
{
fn(x);
return factory.Value();
});
}
public static Func <IPromise> ReturnPromise(this Action fn, PromiseFactory factory)
{
return(() =>
{
fn();
return factory.Value();
});
}
public static IPromise <T> UnCast <T>(this IPromise p, PromiseFactory factory, T defaultValue)
{
if (p == null)
{
return(factory.Value(defaultValue));
}
return(p.Then(() => defaultValue));
}
public IntervalHandleImpl(PromiseFactory factory, int timeout, Action action, PromisePriority priority)
{
var x = new BackboneIntervalHandleImpl <IntervalHandleImpl>(this, factory, timeout, () =>
{
action();
return(factory.Value <object>(null));
}, priority);
x.Start();
_base = x;
}
internal void Next(Func <IPromise <ControlValue <T> > > action)
{
lock (this)
{
if (_last == null)
{
_last = action();
}
else
{
_last = _last.Then(value =>
{
if (value == null || value.State != ControlState.Next)
{
return(_factory.Value(value));
}
return(action());
});
}
}
}
private static IPromise <IPromiseEnumerator <Tuple <Key, Value> > > OrderByInternal <Key, Value>
(PromiseFactory factory, IPromiseEnumerator <Tuple <Key, Value> > items, int count, IComparer <Key> comparer)
{
if (count < 2)
{
return(factory.Value(items));
}
int at = count / 2;
return(OrderByInternal(factory, TakeWhileEnumerator.Create(items, at), at, comparer).Then(firstPart =>
items.Advance(at).Then(half => OrderByInternal(factory, half, count - at, comparer)).Then(secondPart =>
(IPromiseEnumerator <Tuple <Key, Value> >)
new MergeEnumerator <Key, Value>(factory, new NullableResult <Tuple <Key, Value> >(), comparer, firstPart, secondPart))));
}
public static IPromise <NullableResult <T> > ToNullableResult <T>(this IPromise <ControlValue <T> > p, PromiseFactory factory)
{
if (p == null)
{
return(factory.Value(new NullableResult <T>()));
}
return(p.Then(result =>
{
if (result == null || result.State != ControlState.Return || !result.HasValue)
{
return new NullableResult <T>();
}
return new NullableResult <T>(result.Value);
}));
}
public static IPromise <ControlState> ToControlState <T>(this IPromise <ControlValue <T> > p, PromiseFactory factory)
{
if (p == null)
{
return(factory.Value(ControlState.Next));
}
return(p.Then(result =>
{
if (result == null)
{
return ControlState.Next;
}
return result.State;
}));
}
public static IPromise <E> SafeThen <T, E>(this PromiseFactory factory, IPromise <T> next, Func <T, E> conusmer)
{
return(factory.SafeThen(next, x => factory.Value(conusmer(x))));
}
public static Func <T, IPromise <ControlValue <object> > > Canonical <T>(this PromiseFactory factory, Func <T, ControlState> fn)
{
return(factory.Canonical <T, object>(x => factory.Value(fn(x))));
}
public static Func <T, IPromise <ControlValue <E> > > Canonical <T, E>(this PromiseFactory factory, Func <T, E> fn)
{
return(factory.Canonical <T, E>(x => factory.Value(fn(x))));
}
public static Func <IPromise <ControlValue <T> > > Canonical <T>(this PromiseFactory factory, Func <ControlState> fn)
{
return(factory.Canonical <T>(() => factory.Value(fn())));
}
public static Func <IPromise <ControlValue <T> > > Canonical <T>(this PromiseFactory factory, Func <NullableResult <T> > fn)
{
return(factory.Canonical(() => factory.Value(fn())));
}
public static IPromise <T> SafeThen <T>(this PromiseFactory factory, IPromise next, Func <T> conusmer)
{
return(factory.SafeThen(next, () => factory.Value(conusmer())));
}