Added improved models

This commit is contained in:
Sven Heidemann 2023-04-15 19:46:05 +02:00
parent d7d41b878c
commit e94ff1b26f
8 changed files with 143 additions and 22 deletions

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@ -0,0 +1 @@
# imports

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@ -0,0 +1,20 @@
from abc import abstractmethod, ABC
from cpl_core.type import T
class Observer(ABC):
def __init__(self):
ABC.__init__(self)
@abstractmethod
def next(self, value: T):
pass
@abstractmethod
def error(self, ex: Exception):
pass
@abstractmethod
def complete(self):
pass

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@ -0,0 +1,16 @@
from abc import ABC, abstractmethod
from typing import Union, Callable
from cpl_reactive_extensions.abc.observer import Observer
from cpl_reactive_extensions.abc.unsubscribable import Unsubscribable
class Subscribable(ABC):
def __init__(self):
ABC.__init__(self)
@abstractmethod
def subscribe(
self, observer_or_next: Union[Callable, Observer], on_error: Callable = None, on_complete: Callable = None
) -> Unsubscribable:
pass

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@ -0,0 +1,10 @@
from abc import ABC, abstractmethod
class Unsubscribable(ABC):
def __init__(self):
ABC.__init__(self)
@abstractmethod
def unsubscribe(self):
pass

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@ -1,19 +1,22 @@
from typing import Callable, Union, Optional
from cpl_reactive_extensions.observer import Observer
from cpl_reactive_extensions.abc.subscribable import Subscribable
from cpl_reactive_extensions.subscriber import Observer, Subscriber
from cpl_reactive_extensions.subscription import Subscription
class Observable:
class Observable(Subscribable):
def __init__(self, callback: Callable = None):
Subscribable.__init__(self)
self._callback = callback
self._observers: list[Observer] = []
self._subscribers: list[Observer] = []
@staticmethod
def from_list(values: list):
i = 0
def callback(x: Observer):
def callback(x: Subscriber):
nonlocal i
if i == len(values):
i = 0
@ -30,27 +33,27 @@ class Observable:
def subscribe(
self, observer_or_next: Union[Callable, Observer], on_error: Callable = None, on_complete: Callable = None
) -> Observer:
) -> Subscription:
observable: Optional[Observable] = None
if isinstance(observer_or_next, Observable):
observable = observer_or_next
if isinstance(observer_or_next, Callable):
observer = Observer(observer_or_next, on_error, on_complete)
subscriber = Subscriber(observer_or_next, on_error, on_complete)
else:
observer = observer_or_next
subscriber = observer_or_next
if self._callback is None:
self._observers.append(observer)
return observer
self._subscribers.append(subscriber)
return subscriber
if observable is not None and len(observable._observers) > 0:
for observer in observable._observers:
self._call(observer)
if observable is not None and len(observable._subscribers) > 0:
for subscriber in observable._subscribers:
self._call(subscriber)
else:
self._call(observer)
self._call(subscriber)
return observer
return subscriber
def _call(self, observer: Observer):
try:

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@ -1,20 +1,17 @@
from typing import Callable
from cpl_core.type import T
from cpl_reactive_extensions.abc.observer import Observer
from cpl_reactive_extensions.subscription import Subscription
class Observer:
class Subscriber(Subscription, Observer):
def __init__(self, on_next: Callable, on_error: Callable = None, on_complete: Callable = None):
Subscription.__init__(self)
self._on_next = on_next
self._on_error = on_error
self._on_complete = on_complete
self._closed = False
@property
def closed(self) -> bool:
return self._closed
def next(self, value: T):
if self._closed:
raise Exception("Observer is closed")

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@ -0,0 +1,74 @@
from __future__ import annotations
from typing import Union, Callable, Optional
from cpl_reactive_extensions.abc.unsubscribable import Unsubscribable
class Subscription(Unsubscribable):
def __init__(self, initial_teardown: Optional[Callable] = None):
Unsubscribable.__init__(self)
self._initial_teardown = initial_teardown
self._closed = False
self._subscriptions = []
self._parentage: list[Subscription] = []
self._finalizers: list[Subscription] = []
@property
def closed(self) -> bool:
return self._closed
def _add_parent(self, parent: Subscription):
self._parentage.append(parent)
def _has_parent(self, parent: Subscription) -> bool:
return parent in self._parentage
def _exec_finalizer(self, finalizer: Union[Callable, Unsubscribable]):
if isinstance(finalizer, Callable):
finalizer()
else:
finalizer.unsubscribe()
def unsubscribe(self):
if not self._closed:
self._closed = True
for parent in self._parentage:
parent.remove(self)
if self._initial_teardown is not None:
try:
self._initial_teardown()
except Exception as e:
print(e)
for finalizer in self._finalizers:
try:
self._exec_finalizer(finalizer)
except Exception as e:
print(e)
self._subscriptions.clear()
def add(self, tear_down: Union[Subscription, Unsubscribable]):
if tear_down is None or tear_down == self:
return
if self.closed:
self._exec_finalizer(tear_down)
return
if isinstance(tear_down, Subscription):
if tear_down.closed or tear_down._has_parent(self):
return
tear_down._add_parent(self)
self._subscriptions.append(tear_down)
def remove(self, tear_down: Union[Subscription, Unsubscribable]):
self._subscriptions.remove(tear_down)

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@ -6,7 +6,7 @@ from threading import Timer
from cpl_core.console import Console
from cpl_reactive_extensions.behavior_subject import BehaviorSubject
from cpl_reactive_extensions.observable import Observable
from cpl_reactive_extensions.observer import Observer
from cpl_reactive_extensions.subscriber import Observer
from cpl_reactive_extensions.subject import Subject