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from typing import Callable, Optional, TypeVar
from reactivex import Observable, abc
from reactivex.notification import Notification, OnCompleted, OnError, OnNext
_T = TypeVar("_T")
def materialize() -> Callable[[Observable[_T]], Observable[Notification[_T]]]:
def materialize(source: Observable[_T]) -> Observable[Notification[_T]]:
"""Partially applied materialize operator.
Materializes the implicit notifications of an observable
sequence as explicit notification values.
Args:
source: Source observable to materialize.
Returns:
An observable sequence containing the materialized
notification values from the source sequence.
"""
def subscribe(
observer: abc.ObserverBase[Notification[_T]],
scheduler: Optional[abc.SchedulerBase] = None,
):
def on_next(value: _T) -> None:
observer.on_next(OnNext(value))
def on_error(error: Exception) -> None:
observer.on_next(OnError(error))
observer.on_completed()
def on_completed() -> None:
observer.on_next(OnCompleted())
observer.on_completed()
return source.subscribe(
on_next, on_error, on_completed, scheduler=scheduler
)
return Observable(subscribe)
return materialize
__all__ = ["materialize"]
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