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…es them <escape> values are string literals, so json.loads was turning "123", "true", and "null" into other types. Numbers, booleans, null, arrays, and objects are emitted bare and were dropped by the escape-only regex. Scan the call body instead of a non-greedy brace match so nested objects stay intact. Fixes vllm-project#63983 Fixes vllm-project#63906 Signed-off-by: sinksilk <785976238@qq.com> Co-authored-by: Si Chen <cs-fisha@users.noreply.github.com>
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Overview
FunctionGemma argument parsing follows the chat template:
<escape>values stay strings, and numbers, booleans, null, arrays, and objects are parsed from the bare form. Fixes #63983 and #63906.Claims
<escape>123<escape>,<escape>true<escape>,<escape>null<escape>, and other escape-delimited text stay strings.days:[<escape>mon<escape>,...],enabled:true,hour:7,snooze:{minutes:5}) round-trips in non-streamingextract_tool_callsand in the streaming parser's accumulated arguments.}no longer truncates the call. The old regex stopped at the first closing brace.Validation
CPU parser tests, no weights or GPU:
python3 -m pytest tests/tool_parsers/test_functiongemma_tool_parser.py -q --noconftestOn the previous parser the new cases failed (escape text was
json.loads'd, bare keys were dropped, the nestedsnoozeobject was cut). After this commit the file reports 24 passed.Details
The template wraps only strings in
<escape>.arg_regexrequired that wrapper and then ranjson.loadson the contents, so string parameters that look like JSON changed type and every bare value disappeared. The replacement scans keys, escape strings, nested objects, and arrays, and JSON-decodes only bare scalars.Pull Request Checklist