Fixed memory() and RET usage

src/evaluators/AddToMemoryEvaluator.py

@@ -0,0 +1,27 @@
+from core.builtin_concepts import BuiltinConcepts
+from evaluators.BaseEvaluator import OneReturnValueEvaluator
+
+
+class AddToMemoryEvaluator(OneReturnValueEvaluator):
+    """
+    Last chance to alter the return_value
+    This evaluator is supposed to be a generic evaluator for all rules that must be executed just before
+        the aggregations
+    """
+
+    NAME = "AddToMemory"
+
+    def __init__(self):
+        super().__init__(self.NAME, [BuiltinConcepts.AFTER_EVALUATION], 10)
+
+    def matches(self, context, return_value):
+        evaluation_parents = context.get_parents(lambda c: c.action == BuiltinConcepts.PROCESSING)
+        if len(evaluation_parents) > 1:
+            return False  # It must be executed only when the top level context
+
+        from core.sheerka.services.SheerkaMemory import SheerkaMemory
+        return len(context.sheerka.services[SheerkaMemory.NAME].registration) > 0
+
+    def eval(self, context, return_value):
+        context.sheerka.add_registered_objects(context)
+        return None  # no need to have a second pass