vllm/examples/tool_chat_template_functiongemma.jinja

{%- set ns = namespace(developer_content='', has_tools=false) -%}

{%- if tools is defined and tools | length > 0 -%}
    {%- set ns.has_tools = true -%}
{%- endif -%}

{%- for message in messages -%}
    {%- if message.role == 'developer' or message.role == 'system' -%}
<start_of_turn>user
{{ message.content }}
{%- if ns.has_tools %}

Available functions:
{%- for tool in tools %}
{%- if tool.type == 'function' %}

Function: {{ tool.function.name }}
Description: {{ tool.function.description | default('No description provided') }}
Parameters: {{ tool.function.parameters | tojson }}
{%- endif %}
{%- endfor %}
{%- endif %}
<end_of_turn>
    {%- elif message.role == 'user' -%}
<start_of_turn>user
{{ message.content }}<end_of_turn>
    {%- elif message.role == 'assistant' -%}
        {%- if message.tool_calls is defined and message.tool_calls | length > 0 -%}
<start_of_turn>model
{%- for tool_call in message.tool_calls %}
<start_function_call>call:{{ tool_call.function.name }}{
{%- set args = tool_call.function.arguments -%}
{%- if args is string -%}
{%- set args = args | fromjson -%}
{%- endif -%}
{%- for key, value in args.items() -%}
{{ key }}:<escape>{{ value }}<escape>{% if not loop.last %},{% endif %}
{%- endfor -%}
}<end_function_call>
{%- endfor %}
<end_of_turn>
        {%- else -%}
<start_of_turn>model
{{ message.content }}<end_of_turn>
        {%- endif -%}
    {%- elif message.role == 'tool' -%}
<start_of_turn>user
Function result for {{ message.name | default('function') }}: {{ message.content }}<end_of_turn>
    {%- endif -%}
{%- endfor -%}

{%- if add_generation_prompt -%}
<start_of_turn>model
{%- endif -%}