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from typing import Any, Callable, Optional, TypeVar
from reactivex import Observable, abc, typing
from reactivex.disposable import (
CompositeDisposable,
RefCountDisposable,
SerialDisposable,
SingleAssignmentDisposable,
)
from reactivex.internal import add_ref
from reactivex.scheduler import TimeoutScheduler
from reactivex.subject import Subject
_T = TypeVar("_T")
def window_with_time_or_count_(
timespan: typing.RelativeTime,
count: int,
scheduler: Optional[abc.SchedulerBase] = None,
) -> Callable[[Observable[_T]], Observable[Observable[_T]]]:
def window_with_time_or_count(source: Observable[_T]) -> Observable[Observable[_T]]:
def subscribe(
observer: abc.ObserverBase[Observable[_T]],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton()
n: int = 0
s: Subject[_T] = Subject()
timer_d = SerialDisposable()
window_id = 0
group_disposable = CompositeDisposable(timer_d)
ref_count_disposable = RefCountDisposable(group_disposable)
def create_timer(_id: int):
nonlocal n, s, window_id
m = SingleAssignmentDisposable()
timer_d.disposable = m
def action(scheduler: abc.SchedulerBase, state: Any = None):
nonlocal n, s, window_id
if _id != window_id:
return
n = 0
window_id += 1
new_id = window_id
s.on_completed()
s = Subject()
observer.on_next(add_ref(s, ref_count_disposable))
create_timer(new_id)
m.disposable = _scheduler.schedule_relative(timespan, action)
observer.on_next(add_ref(s, ref_count_disposable))
create_timer(0)
def on_next(x: _T) -> None:
nonlocal n, s, window_id
new_window = False
new_id = 0
s.on_next(x)
n += 1
if n == count:
new_window = True
n = 0
window_id += 1
new_id = window_id
s.on_completed()
s = Subject()
observer.on_next(add_ref(s, ref_count_disposable))
if new_window:
create_timer(new_id)
def on_error(e: Exception) -> None:
s.on_error(e)
observer.on_error(e)
def on_completed() -> None:
s.on_completed()
observer.on_completed()
group_disposable.add(
source.subscribe(on_next, on_error, on_completed, scheduler=scheduler_)
)
return ref_count_disposable
return Observable(subscribe)
return window_with_time_or_count
__all__ = ["window_with_time_or_count_"]
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