fix

nanovllm/engine/sequence.py

@@ -35,10 +35,22 @@ class Sequence:
     def __getitem__(self, key):
         return self.token_ids[key]
 
+    @property
+    def is_finished(self):
+        return self.status == SequenceStatus.FINISHED
+
     @property
     def num_completion_tokens(self):
         return len(self.token_ids) - self.num_prompt_tokens
 
+    @property
+    def prompt_token_ids(self):
+        return self.token_ids[:self.num_prompt_tokens]
+
+    @property
+    def completion_token_ids(self):
+        return self.token_ids[self.num_prompt_tokens:]
+
     @property
     def num_cached_tokens(self):
         return self._num_cached_tokens