Fixed #29: Parsers: Implement parsing memoization

Fixed #77 : Parser: ShortTermMemoryParser should be called separately
Fixed #78 : Remove VariableNode usage
Fixed #79 : ConceptManager: Implement compile caching
Fixed #80 : SheerkaExecute : parsers_key is not correctly computed
Fixed #81 : ValidateConceptEvaluator : Validate concept's where and pre clauses right after the parsing
Fixed #82 : SheerkaIsAManager: isa() failed when the set as a body
Fixed #83 : ValidateConceptEvaluator : Support BNF and SYA Concepts
Fixed #84 : ExpressionParser: Implement the parser as a standard parser
Fixed #85 : Services: Give order to services
Fixed #86 : cannot manage smart_get_attr(the short, color)

tests/sheerkarete/test_network.py

@@ -88,6 +88,20 @@ class TestReteNetwork(TestUsingMemoryBasedSheerka):
             "fact_name.value.body": ["sub_value"],
         }
 
+    def test_i_can_update_conditions_attributes_when_value_is_a_variable(self):
+        network = ReteNetwork()
+        conditions = [Condition(V("x"), "__name__", "x"),
+                      Condition(V("y"), "__name__", "y"),
+                      Condition(V("x"), "__self__", V("y"))]
+
+        rule = RuleForTestingRete(AndConditions(conditions))
+        network.add_rule(rule)
+
+        assert network.attributes_by_id == {
+            "x": ["__name__", "__self__"],
+            "y": ["__name__", "__self__"],
+        }
+
     def test_adding_obj_when_no_rule_has_no_effect(self):
         network = ReteNetwork()
         ret = ReturnValueConcept("test", True, "value")