[mistral_common] Add v11 tokenizer (#19193)

Signed-off-by: Patrick von Platen <patrick.v.platen@gmail.com>

vllm/entrypoints/openai/tool_parsers/mistral_tool_parser.py

@@ -44,11 +44,17 @@ class MistralToolCall(ToolCall):
         return id.isalnum() and len(id) == 9
 
 
+def _is_fn_name_regex_support(model_tokenizer: AnyTokenizer) -> bool:
+    return isinstance(model_tokenizer, MistralTokenizer) \
+        and model_tokenizer.version >= 11
+
+
 @ToolParserManager.register_module("mistral")
 class MistralToolParser(ToolParser):
     """
-    Tool call parser for Mistral 7B Instruct v0.3, intended for use with the
-    examples/tool_chat_template_mistral.jinja template.
+    Tool call parser for Mistral 7B Instruct v0.3, intended for use with
+    - [`mistral_common`](https://github.com/mistralai/mistral-common/)
+    - the examples/tool_chat_template_mistral.jinja template.
 
     Used when --enable-auto-tool-choice --tool-call-parser mistral are all set
     """
@@ -70,6 +76,12 @@ class MistralToolParser(ToolParser):
         self.bot_token = "[TOOL_CALLS]"
         self.bot_token_id = self.vocab.get(self.bot_token)
         self.tool_call_regex = re.compile(r"\[{.*}\]", re.DOTALL)
+        if _is_fn_name_regex_support(self.model_tokenizer):
+            self.fn_name_regex = re.compile(r'([a-zA-Z0-9_-]+)(\{.*?\})',
+                                            re.DOTALL)
+        else:
+            self.fn_name_regex = None
+
         if self.bot_token_id is None:
             raise RuntimeError(
                 "Mistral Tool Parser could not locate the tool call token in "
@@ -109,11 +121,25 @@ class MistralToolParser(ToolParser):
         tool_content = model_output.replace(self.bot_token, "").strip()
 
         try:
-
             # we first try to directly load the json as parsing very nested
             # jsons is difficult
             try:
-                function_call_arr = json.loads(tool_content)
+                if self.fn_name_regex:
+                    matches = self.fn_name_regex.findall(tool_content)
+
+                    function_call_arr = []
+                    for match in matches:
+                        fn_name = match[0]
+                        args = match[1]
+
+                        # fn_name is encoded outside serialized json dump
+                        # only arguments are serialized
+                        function_call_arr.append({
+                            "name": fn_name,
+                            "arguments": json.loads(args)
+                        })
+                else:
+                    function_call_arr = json.loads(tool_content)
             except json.JSONDecodeError:
                 # use a regex to find the part corresponding to the tool call.
                 # NOTE: This use case should not happen if the model is trained

vllm/transformers_utils/tokenizers/mistral.py

@@ -187,6 +187,8 @@ class MistralTokenizer(TokenizerBase):
     def __init__(self, tokenizer: "PublicMistralTokenizer") -> None:
         self.mistral = tokenizer
         self.instruct = tokenizer.instruct_tokenizer
+        _mistral_version_str = self.instruct.tokenizer.version.value
+        self.version: int = int(_mistral_version_str.split("v")[-1])
 
         tokenizer_ = tokenizer.instruct_tokenizer.tokenizer
         from mistral_common.tokens.tokenizers.tekken import (