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Fix LongCat tool call parsing for tool_choice='auto' #1

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Fix LongCat tool call parsing for tool_choice='auto' #1

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7 changes: 5 additions & 2 deletions python/sglang/srt/function_call/function_call_parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,7 @@ def __init__(self, tools: List[Tool], tool_call_parser: str):

self.detector = detector
self.tools = tools
self.tool_call_parser = tool_call_parser

def has_tool_call(self, text: str) -> bool:
"""
Expand Down Expand Up @@ -179,12 +180,14 @@ def get_structure_constraint(
):
strict_tag = self.get_structure_tag()
return ("structural_tag", strict_tag)
elif tool_choice == "required" or isinstance(tool_choice, ToolChoice):
elif (tool_choice == "required"
or isinstance(tool_choice, ToolChoice)
or (tool_choice == "auto" and self.tool_call_parser == "longcat")):
ebnf = self.get_ebnf(tool_choice)
return ("ebnf", ebnf) if ebnf is not None else None

def get_ebnf(
self, tool_choice: Union[ToolChoice, Literal["required"]]
self, tool_choice: Union[ToolChoice, Literal["required", "auto"]]
) -> Optional[str]:
"""
Get the EBNF grammar for the specified tool choice.
Expand Down