Fixed #49 : working

src/core/sheerka/services/SheerkaRuleManager.py

@@ -1123,12 +1123,22 @@ class SheerkaRuleManager(BaseService):
 
 
 class ReteConditionExprVisitor(ExpressionVisitor):
+    """
+    From an ExprNode, construct the list of Rete condition that can be used in the ReteNetwork
+    """
 
     def __init__(self, context):
         self.context = context
         self.var_counter = 0
         self.variables = {}
 
+    def get_conditions(self, expr_node):
+        self.var_counter = 0
+        self.variables.clear()
+
+        conditions = self.visit(expr_node)
+        return [AndConditions(conditions)]
+
     def add_variable(self, target):
         var_name = f"__x_{self.var_counter:02}__"
         self.var_counter += 1
@@ -1165,17 +1175,25 @@ class ReteConditionExprVisitor(ExpressionVisitor):
         conditions.append(Condition(root, attr, variable))
         return variable
 
-    def get_conditions(self, expr_node):
-        self.var_counter = 0
-        self.variables.clear()
+    def visit_VariableNode(self, expr_node: VariableNode):
+        if expr_node.attributes_str is None and not expr_node.name.startswith("__"):
+            # try to recognize a concept
+            res = evaluate(self.context,
+                           expr_node.name,
+                           evaluators=CONDITIONS_VISITOR_EVALUATORS,
+                           desc=None,
+                           eval_body=True,
+                           eval_where=False,
+                           is_question=False,
+                           expect_success=False,
+                           stm=None)
+            res = expect_one(self.context, res)
+            if res.status and isinstance(res.value, Concept):
+                return self.recognize_concept(["__ret", "body"], res.value, {})
 
-        conditions = self.visit(expr_node)
-        return [AndConditions(conditions)]
-
-    def visit_VariableNode(self, expr_node):
         conditions = []
         var_name, attr = self.init_or_get_variable_from_name(expr_node.unpack(), conditions)
-        if expr_node.attributes_str is not None:
+        if attr:
             conditions.append(Condition(var_name, attr, True))
         return conditions
 
@@ -1277,3 +1295,7 @@ class ReteConditionExprVisitor(ExpressionVisitor):
             conditions.extend(res)
         else:
             conditions.append(Condition(left, attr, value))
+
+
+class PythonConditionExprVisitor(ExpressionVisitor):
+    pass