public static Future sync(Func <FutureOr> computation)
{
try {
var result = computation();
if (result.isFuture)
{
return(result.f);
}
else
{
return(_Future.value(result));
}
}
catch (Exception error) {
var future = new _Future();
AsyncError replacement = Zone.current.errorCallback(error);
if (replacement != null)
{
future._asyncCompleteError(async_._nonNullError(replacement.InnerException));
}
else
{
future._asyncCompleteError(error);
}
return(future);
}
}
internal static _Future immediateError(Exception error)
{
var future = new _Future(Zone.current);
future._asyncCompleteError(error);
return(future);
}
internal static void _asyncCompleteWithErrorCallback(_Future result, Exception error)
{
AsyncError replacement = Zone.current.errorCallback(error);
if (replacement != null)
{
error = _nonNullError(replacement.InnerException);
}
result._asyncCompleteError(error);
}