Working on #98 : Persist attribute value when global_truth is set to true

src/core/sheerka/Sheerka.py

@@ -21,6 +21,9 @@ from sdp.sheerkaDataProvider import Event
 
 BASE_NODE_PARSER_CLASS = "parsers.BaseNodeParser.BaseNodeParser"
 EXIT_COMMANDS = ("quit", "exit", "bye")
+CONTEXT_HINT_COMMANDS = (("global_truth(", "global_truth"),
+                         ("question(", "question"),
+                         ("eval", "eval"))
 EXECUTE_STEPS = [
     BuiltinConcepts.BEFORE_PARSING,
     BuiltinConcepts.PARSING,
@@ -493,7 +496,7 @@ class Sheerka(Concept):
             c.get_hints().recognized_by = rec_by
             c.get_hints().is_instance = is_inst
             if is_eval is None:
-                c.get_hints().is_evaluated = len(c.get_metadata().variables) > 0
+                c.get_hints().is_evaluated = len(c.get_metadata().parameters) > 0
             else:
                 c.get_hints().is_evaluated = is_eval
             return c
@@ -581,7 +584,12 @@ class Sheerka(Concept):
         # otherwise, create another instance
         concept = self.builtin_cache[key]() if key in self.builtin_cache else Concept()
         concept.update_from(template, update_value=False)
-        # concept.freeze_definition_hash()
+
+        # set the default values is needed
+        for var_name, var_value in concept.get_metadata().variables:
+            if isinstance(var_value, Concept):
+                concept.set_value(var_name, var_value)
+                # Note that the concept is not considered as evaluated. The body may need to be computed
 
         if len(kwargs) == 0:
             return concept