test_wrapper.py

class WrapperBase(abc.ABC):

	def __init__(self, receiver_weak):
		self.receiverWeak = receiver_weak


	def __repr__(self):
		return "<Wrapper: {receiver_weak}>".format(receiver_weak=self.receiverWeak)


	def call(self, *args, **kwargs):
		receiver = self.receiverWeak()
		if receiver is not None:
			result = receiver(*args, **kwargs)
			return (True, result)
		return (False, None)


	def isAlive(self):
		return self.receiverWeak() is not None


	@abc.abstractmethod
	def emit(self, *args, **kwargs):
		pass


class WrapperBase_Method(WrapperBase):

	def __init__(self, receiver_weak, method_name:str):
		super().__init__(receiver_weak=receiver_weak)
		self.methodName = method_name


	def __repr__(self):
		return "<WrapperMethod/{method_name}: {receiver_weak}>" \
			.format(method_name=self.methodName, receiver_weak=self.receiverWeak)


	def call(self, *args, **kwargs):
		receiver = self.receiverWeak()
		if receiver is not None:
			method = getattr(receiver, self.methodName)
			if method is not None and callable(method):
				result = method(*args, **kwargs)
			return (True, result)
		return (False, None)


class WrapperNoInfo(WrapperBase):

	def __init__(self, receiver_weak):
		super().__init__(receiver_weak=receiver_weak)


	def emit(self, *args, **kwargs):
		return self.call(*args, **kwargs)


class WrapperWithInfo(WrapperBase):

	def __init__(self, receiver_weak, info):
		super().__init__(receiver_weak=receiver_weak)
		self.info = info


	def emit(self, *args, **kwargs):
		return self.call(self.info, *args, **kwargs)


class WrapperZero(WrapperBase):

	def __init__(self, receiver_weak):
		super().__init__(receiver_weak=receiver_weak)


	def emit(self, *args, **kwargs):
		return self.call()




#=============
class WrapperNoInfo_Method(WrapperBase_Method):

	def __init__(self, receiver_weak, method_name):
		super().__init__(receiver_weak=receiver_weak, method_name=method_name)


	def emit(self, *args, **kwargs):
		return self.call(*args, **kwargs)


class WrapperWithInfo_Method(WrapperBase_Method):

	def __init__(self, receiver_weak, method_name, info):
		super().__init__(receiver_weak=receiver_weak, method_name=method_name)
		self.info = info


	def emit(self, *args, **kwargs):
		return self.call(self.info, *args, **kwargs)


class WrapperZero_Method(WrapperBase_Method):

	def __init__(self, receiver_weak, method_name):
		super().__init__(receiver_weak=receiver_weak, method_name=method_name)


	def emit(self, *args, **kwargs):
		return self.call()