Fix stack bounds check in AssignmentEvaluator

ethanmoffat · Jan 29, 2022 · fb99073 · fb99073
1 parent 8d7f154
commit fb99073
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/EOBot/Interpreter/States/AssignmentEvaluator.cs b/EOBot/Interpreter/States/AssignmentEvaluator.cs
@@ -22,18 +22,18 @@ public bool Evaluate(ProgramState input)
                 return false;
             }
 
-            var expressionResult = (VariableBotToken)input.OperationStack.Pop();
             if (input.OperationStack.Count == 0)
                 return false;
+            var expressionResult = (VariableBotToken)input.OperationStack.Pop();
 
             // todo: check that assignOp is an assignment operator
-            var assignOp = input.OperationStack.Pop();
             if (input.OperationStack.Count == 0)
                 return false;
+            var assignOp = input.OperationStack.Pop();
 
-            var variable = (IdentifierBotToken)input.OperationStack.Pop();
             if (input.OperationStack.Count == 0)
                 return false;
+            var variable = (IdentifierBotToken)input.OperationStack.Pop();
 
             if (variable.ArrayIndex != null)
             {