[WIP] operator implement

src/cpl_reactive_extensions/utils.py

@@ -0,0 +1,23 @@
+from typing import Callable
+
+from cpl_reactive_extensions import Observable, Subscriber
+from cpl_reactive_extensions.abc import Operator
+
+
+def operate(init: Callable[[Observable, Subscriber], Operator]):
+    def observable(source: Observable):
+        def create(self: Subscriber, lifted_source: Observable):
+            try:
+                return init(lifted_source, self)
+            except Exception as e:
+                self.error(e)
+
+        operator = Operator()
+        operator.call = create
+
+        if "lift" not in dir(source):
+            raise TypeError("Unable to lift unknown Observable type")
+
+        return source.lift(operator)
+
+    return observable