refactor: move some classes and functions to separate files

task6/queues.py

@@ -0,0 +1,50 @@
+from abc import ABC, abstractmethod
+from collections import deque
+from typing import Callable, Optional, Self, override
+
+
+class Queue[T](ABC):
+    def __init__(self, size: int) -> None:
+        self.size = size
+        self.queue: deque[T] = deque()
+    
+    def __len__(self) -> int:
+        return len(self.queue)
+
+    def __bool__(self) -> bool:
+        return bool(self.queue)
+
+    @abstractmethod
+    def add(self, item: T) -> None: pass
+
+    @abstractmethod
+    def pop(self) -> T: pass
+
+class PermissiveQueue[T](Queue):
+    def __init__(self, size: int, overload_function: Optional[Callable[[Self], None]] = None) -> None:
+        super().__init__(size)
+        self._on_overload = overload_function
+
+    @override
+    def add(self, item: T) -> None:
+        self.queue.append(item)
+        if self._on_overload and len(self.queue) > self.size:
+            self._on_overload(self)
+    
+    @override
+    def pop(self) -> T:
+        return self.queue.popleft()
+
+class EnforcingQueue[T](Queue):
+    def __init__(self, size: int) -> None:
+        super().__init__(size)
+
+    @override
+    def add(self, item: T) -> None:
+        if len(self.queue) >= self.size:
+            raise IndexError
+        self.queue.append(item)
+    
+    @override
+    def pop(self) -> T:
+        return self.queue.popleft()