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/BaseTest.py

@@ -45,7 +45,7 @@ class InitTestHelper:
                         c.get_metadata().definition_type = DEFINITION_TYPE_BNF
                     else:
                         raise Exception(f"Error in bnf definition '{c.get_metadata().definition}'",
-                                        self.sheerka.get_errors(res))
+                                        self.sheerka.get_errors(self.context, res))
 
             if create_new:
                 self.sheerka.create_new_concept(self.context, c)
@@ -264,3 +264,7 @@ class BaseTest:
             assert res[0].status, f"Error while executing '{expression}'"
 
         return sheerka
+
+    @staticmethod
+    def successful_return_values(return_values):
+        return [ret_val for ret_val in return_values if ret_val.status]