simple_read_instructions.py

class ReadInstructions:
	def __init__(include: set, exclude: set, read_all: bool):
		self.include = include
		self.exclude = exclude
		self.read_all = read_all
	
	def __and__(self, other):
		return self.__class__(
			include=(self.include & other.include),
			exclude=(self.exclude | other.exclude),
			read_all=(self.read_all and other.read_all)
		)
	
	def __or__(self, other):
		return self.__class__(
			include=(self.include | other.include),
			exclude=(self.exclude & other.exclude),
			read_all=(self.read_all or other.read_all)
		)

	def __invert__(self):
		return self.__class__(
			include=self.exclude,
			exclude=self.include,
			read_all=not self.read_all
		)