Fixed #125: SheerkaErrorManager

Fixed #135: Change services service priorities
Fixed #136: ErrorManager: Implement recognize_error
Fixed #137: BNFNodeParser : Error when parsing regex with sub parsers
Fixed #138: get_last_errors(): real errors sources are lost
Fixed #139: OneError return value removes the origin of the error
Fixed #140: Concept variables are not correctly handled when parsing sub expression
Fixed #143: Implement has_unknown_concepts()

tests/sheerkapython/test_ExprToConditionsVisitor.py

@@ -87,7 +87,7 @@ class TestExprToConditionsVisitor(TestUsingMemoryBasedSheerka):
 
     @staticmethod
     def get_conditions_from_expression(context, expression, parser=None):
-        parser = parser or ExpressionParser(old_style=False)
+        parser = parser or ExpressionParser()
         error_sink = ErrorSink()
         parser_input = ParserInput(expression)
         parser.reset_parser_input(parser_input, error_sink)
@@ -293,6 +293,21 @@ class TestExprToConditionsVisitor(TestUsingMemoryBasedSheerka):
         resolved_expected_objects = {k: cmap[v].id for k, v in {"__o_00__": "two"}.items()}
         assert resolved_objects == resolved_expected_objects
 
+    def test_i_can_manage_possible_variable_indication(self):
+        my_map = {
+            "isa": Concept("x is an int").def_var("x")  # no pre condition
+        }
+        sheerka, context = self.initialize_test(my_map)
+        parser = ExpressionParser(known_variables={"x"})
+        conditions = self.get_conditions_from_expression(context, "x is an int", parser)
+
+        python_source = conditions[0].return_value.body.body.source
+        assert python_source == "call_concept(__o_00__, x=x)"
+
+        resolved_objects = {k: v.id for k, v in conditions[0].objects.items()}
+        resolved_expected_objects = {k: my_map[v].id for k, v in {"__o_00__": "isa"}.items()}
+        assert resolved_objects == resolved_expected_objects
+
     def test_i_can_parse_when_variables_are_missing(self):
         sheerka, context = self.initialize_test()
         expression = "x equals 1"