reasoning_content -> reasoning (#27752)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/reasoning/step3_reasoning_parser.py

@@ -40,7 +40,7 @@ class Step3ReasoningParser(ReasoningParser):
                 "token in the tokenizer!"
             )
 
-    def extract_reasoning_content_streaming(
+    def extract_reasoning_streaming(
         self,
         previous_text: str,
         current_text: str,
@@ -54,7 +54,7 @@ class Step3ReasoningParser(ReasoningParser):
         Handles streaming output where previous + delta = current.
         Uses token IDs for faster processing.
         For text "abc</think>xyz":
-        - 'abc' goes to reasoning_content
+        - 'abc' goes to reasoning
         - 'xyz' goes to content
         """
         # Skip single special token
@@ -64,10 +64,10 @@ class Step3ReasoningParser(ReasoningParser):
         if self.think_end_token_id in delta_token_ids:
             # </think> in delta, extract reasoning content and remaining content
             end_index = delta_text.find(self.think_end_token)
-            reasoning_content = delta_text[:end_index]
+            reasoning = delta_text[:end_index]
             content = delta_text[end_index + len(self.think_end_token) :]
             return DeltaMessage(
-                reasoning_content=reasoning_content,
+                reasoning=reasoning,
                 content=content if content else None,
             )
         elif self.think_end_token_id in previous_token_ids:
@@ -75,9 +75,9 @@ class Step3ReasoningParser(ReasoningParser):
             return DeltaMessage(content=delta_text)
         else:
             # No </think> seen yet, everything is reasoning
-            return DeltaMessage(reasoning_content=delta_text)
+            return DeltaMessage(reasoning=delta_text)
 
-    def extract_reasoning_content(
+    def extract_reasoning(
         self, model_output: str, request: ChatCompletionRequest
     ) -> tuple[str | None, str | None]:
         # Check if the model output contains the </think> token
@@ -87,7 +87,7 @@ class Step3ReasoningParser(ReasoningParser):
         else:
             # Find the first occurrence of </think>
             end_index = model_output.find(self.think_end_token)
-            reasoning_content = model_output[:end_index]
+            reasoning = model_output[:end_index]
 
             # Content after </think> token
             content = model_output[end_index + len(self.think_end_token) :]
@@ -95,7 +95,7 @@ class Step3ReasoningParser(ReasoningParser):
             if len(content) == 0:
                 content = None
 
-            return reasoning_content, content
+            return reasoning, content
 
     def is_reasoning_end(self, input_ids: list[int]) -> bool:
         return self.think_end_token_id in input_ids