Added extra text on error

aiplan4eu · Oct 16, 2023 · 08b4cf5 · 08b4cf5
1 parent dc3e720
commit 08b4cf5
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/unified_planning/model/walkers/state_evaluator.py b/unified_planning/model/walkers/state_evaluator.py
@@ -53,6 +53,7 @@ def evaluate(
         self._state = state
         r = self.walk(expression)
         self._variable_assignments = None
+        self._exp = expression
         assert r.is_constant()
         return r
 
@@ -79,5 +80,5 @@ def walk_fluent_exp(self, expression: "FNode", args: List["FNode"]) -> "FNode":
 
     def walk_param_exp(self, expression: "FNode", args: List["FNode"]) -> "FNode":
         raise UPProblemDefinitionError(
-            f"The StateEvaluator.evaluate should only be called on grounded expressions but is called on the parameter: {expression}"
+            f"The StateEvaluator.evaluate should only be called on grounded expressions but is called on the parameter: {expression} in exp {self._exp}"
         )