chat_template.jinja

{%- set think_start =  '<think>' -%}
{%- set think_end =  '</think>' -%}

{%- macro render_content(msg) -%}
    {%- set c = msg.get('content') -%}
    {%- if c is string -%}
      {{ c | replace(think_start, '*') | replace(think_end, '*') }}
    {%- endif -%}
{%- endmacro -%}

{% macro set_roles(message) -%}
  {%- set role_name =  message.get('name') or  message['role'] -%}
  {%- if message['role'] == 'user' -%}
    <|im_user|>{{role_name}}<|im_middle|>
  {%- elif message['role'] == 'assistant' -%}
    <|im_assistant|>{{role_name}}<|im_middle|>
  {%- else -%}
    <|im_system|>{{role_name}}<|im_middle|>
  {%- endif -%}
{%- endmacro -%}

{%- macro render_toolcalls(message) -%}
  <|tool_calls_section_begin|>
  {%- for tool_call in message['tool_calls'] -%}
    {%- set formatted_id = tool_call['id'] -%}
    <|tool_call_begin|>{{ formatted_id }}<|tool_call_argument_begin|>{% if tool_call['function']['arguments'] is string %}{{ tool_call['function']['arguments'] }}{% else %}{{ tool_call['function']['arguments'] | tojson }}{% endif %}<|tool_call_end|>
  {%- endfor -%}
  <|tool_calls_section_end|>
{%- endmacro -%}

{# Find last non-tool-call assisitant message #}
{%- set ns = namespace(last_non_tool_call_assistant_msg=-1) -%}
{%- for idx in range(messages|length-1, -1, -1) -%}
    {%- if messages[idx]['role'] == 'assistant' and not messages[idx].get('tool_calls') -%}
        {%- set ns.last_non_tool_call_assistant_msg = idx -%}
        {%- break -%}
    {%- endif -%}
{%- endfor -%}

{# split all messages into history & suffix, reasoning_content in suffix should be reserved.#}
{%- set hist_msgs = messages[:ns.last_non_tool_call_assistant_msg+1] -%}
{%- set suffix_msgs = messages[ns.last_non_tool_call_assistant_msg+1:] -%}

{%- if tools -%}
  {%- if tools_ts_str -%}
    <|im_system|>tool_declare<|im_middle|>{{ tools_ts_str }}<|im_end|>
  {%- else -%}
    <|im_system|>tool_declare<|im_middle|>{{ tools | tojson(separators=(',', ':')) }}<|im_end|>
  {%- endif -%}
{%- endif -%}
  
{%- for message in hist_msgs -%}
  {{set_roles(message)}}
  {%- if message['role'] == 'assistant' -%}
    <think></think>{{render_content(message)}}
    {%- if message.get('tool_calls') -%}
      {{render_toolcalls(message)}}
    {%- endif -%}
  {%- elif message['role'] == 'tool' -%}
    {%- set tool_call_id = message.tool_call_id -%}
    ## Return of {{ tool_call_id }}
{{render_content(message)}}
  {%- elif message['content'] is not none -%}
    {{render_content(message)}}
  {%- endif -%}
  <|im_end|>
{%- endfor -%}

{%- for message in suffix_msgs -%}
  {{set_roles(message)}}
  {%- if message['role'] == 'assistant' -%}
    {%- if thinking is defined and thinking is false -%}
    <think></think>{{render_content(message)}}
    {%- else -%}
    {%- set rc = message.get('reasoning_content', '') -%}
    <think>{{rc}}</think>{{render_content(message)}}
    {%- endif -%}
    {%- if message.get('tool_calls') -%}
     {{render_toolcalls(message)}}
    {%- endif -%}
  {%- elif message['role'] == 'tool' -%}
    {%- set tool_call_id = message.tool_call_id -%}
    ## Return of {{ tool_call_id }}
{{render_content(message)}}
  {%- elif message['content'] is not none -%}
    {{render_content(message)}}
  {%- endif -%}
  <|im_end|>
{%- endfor -%}


{%- if add_generation_prompt -%}
  <|im_assistant|>assistant<|im_middle|>
  {%- if thinking is defined and thinking is false -%}
  <think></think>
  {%- else -%}
  <think>
  {%- endif -%}
{%- endif -%}