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)

src/parsers/BaseNodeParser.py

@@ -223,6 +223,8 @@ class ConceptNode(LexerNode):
     def to_short_str(self):
         return f'CN({self.concept})'
 
+    def get_concept(self):
+        return self.concept
 
 class SourceCodeNode(LexerNode):
     """
@@ -388,7 +390,8 @@ class SourceCodeWithConceptNode(LexerNode):
         return self._all_nodes
 
     def clone(self):
-        clone = SourceCodeWithConceptNode(self.first, self.last, self.nodes.copy(), self.has_unrecognized)
+        nodes = [n.clone() for n in self.nodes]
+        clone = SourceCodeWithConceptNode(self.first.clone(), self.last.clone(), nodes, self.has_unrecognized)
         clone.python_node = self.python_node
         clone.return_value = self.return_value
         return clone