{# ----------‑‑‑ special token variables ‑‑‑---------- #}
{%- set toolcall_begin_token = '' -%}
{%- set toolcall_end_token = '' -%}
{#- Tool Rendering Functions ============================================== -#}
{%- macro render_tool_namespace(namespace_name, tool_list) -%}
{%- for tool in tool_list -%}
{{ tool.function | tojson(ensure_ascii=False) }}
{% endfor -%}
{%- endmacro -%}
{%- macro visible_text(content) -%}
{%- if content is string -%}
{{ content }}
{%- elif content is iterable and content is not mapping -%}
{%- for item in content -%}
{%- if item is mapping and item.type == 'text' -%}
{{- item.text }}
{%- elif item is string -%}
{{- item }}
{%- endif -%}
{%- endfor -%}
{%- else -%}
{{- content }}
{%- endif -%}
{%- endmacro -%}
{#- System Message Construction ============================================ -#}
{%- macro build_system_message(system_message) -%}
{%- if system_message and system_message.content -%}
{{- visible_text(system_message.content) }}
{%- else -%}
{%- if model_identity is not defined -%}
{%- set model_identity = "You are a helpful assistant." -%}
{%- endif -%}
{{- model_identity }}
{%- endif -%}
{#- Handle current_date -#}
{%- if system_message and system_message.current_date -%}
{{- '\n' ~ 'Current date: ' + system_message.current_date }}
{%- endif -%}
{#- Handle current_location -#}
{%- if system_message and system_message.current_location -%}
{{- '\n' ~ 'Current location: ' + system_message.current_location }}
{%- endif -%}
{%- endmacro -%}
{#- Main Template Logic ================================================= -#}
{#- Extract system message (only first message if it's system) -#}
{%- set system_message = none -%}
{%- set conversation_messages = messages -%}
{%- if messages and messages[0].role == "system" -%}
{%- set system_message = messages[0] -%}
{%- set conversation_messages = messages[1:] -%}
{%- endif -%}
{#- Get the last user message turn, for interleved thinking -#}
{%- set ns = namespace(last_user_index=-1) %}
{% for m in conversation_messages %}
{%- if m.role == 'user' %}
{% set ns.last_user_index = loop.index0 -%}
{%- endif %}
{%- endfor %}
{#- Render system message -#}
{{- ']~!b[' ~ ']~b]system' ~ '\n' }}
{{- build_system_message(system_message) }}
{#- Render tools if available -#}
{%- if tools -%}
{{- '\n\n' ~ '# Tools' ~ '\n' ~ 'You may call one or more tools to assist with the user query.\nHere are the tools available in JSONSchema format:' ~ '\n' }}
{{- '\n' ~ '' ~ '\n' }}
{{- render_tool_namespace("functions", tools) }}
{{- '' ~ '\n\n' }}
{{- 'When making tool calls, use XML format to invoke tools and pass parameters:' ~ '\n' }}
{{- '\n' ~ toolcall_begin_token }}
param-value-1
param-value-2
...
{{- '\n' ~ toolcall_end_token }}
{%- endif -%}
{{- '[e~[\n' }}
{#- Render messages -#}
{%- set last_tool_call = namespace(name=none) -%}
{%- for message in conversation_messages -%}
{%- if message.role == 'assistant' -%}
{#- Only render reasoning_content if no user message follows -#}
{{- ']~b]ai' ~ '\n' }}
{%- set reasoning_content = '' %}
{%- set content = visible_text(message.content) %}
{%- if message.reasoning_content is string %}
{%- set reasoning_content = message.reasoning_content %}
{%- else %}
{%- if '' in content %}
{%- set reasoning_content = content.split('')[0].strip('\n').split('')[-1].strip('\n') %}
{%- set content = content.split('')[-1].strip('\n') %}
{%- endif %}
{%- endif %}
{%- if reasoning_content and loop.index0 > ns.last_user_index -%}
{{- '' ~ '\n' ~ reasoning_content ~ '\n' ~ '' ~ '\n\n' }}
{%- endif -%}
{%- if content -%}
{{- content }}
{%- endif -%}
{%- if message.tool_calls -%}
{{- '\n' ~ toolcall_begin_token ~ '\n' }}
{%- for tool_call in message.tool_calls -%}
{%- if tool_call.function %}
{%- set tool_call = tool_call.function %}
{%- endif %}
{{- '' }}
{% set _args = tool_call.arguments %}
{%- for k, v in _args.items() %}
{{- '' }}
{{- v | tojson(ensure_ascii=False) if v is not string else v }}
{{- '' }}
{% endfor %}
{{- '' ~ '\n' }}
{%- endfor -%}
{{- toolcall_end_token}}
{%- set last_tool_call.name = message.tool_calls[-1].name -%}
{%- else -%}
{%- set last_tool_call.name = none -%}
{%- endif -%}
{{- '[e~[' ~ '\n' }}
{%- elif message.role == 'tool' -%}
{%- if last_tool_call.name is none -%}
{{- raise_exception("Message has tool role, but there was no previous assistant message with a tool call!") }}
{%- endif -%}
{%- if loop.first or (conversation_messages[loop.index0 - 1].role != 'tool') -%}
{{- ']~b]tool' }}
{%- endif -%}
{%- if message.content is string -%}
{{- '\n' }}
{{- message.content }}
{{- '' }}
{%- else -%}
{%- for tr in message.content -%}
{{- '\n' }}
{{- tr.output if tr.output is defined else (tr.text if tr.type == 'text' and tr.text is defined else tr) }}
{{- '\n' }}
{%- endfor -%}
{%- endif -%}
{%- if loop.last or (conversation_messages[loop.index0 + 1].role != 'tool') -%}
{{- '[e~[\n' -}}
{%- endif -%}
{%- elif message.role == 'user' -%}
{{- ']~b]user' ~ '\n' }}
{{- visible_text(message.content) }}
{{- '[e~[' ~ '\n' }}
{%- endif -%}
{%- endfor -%}
{#- Generation prompt -#}
{%- if add_generation_prompt -%}
{{- ']~b]ai' ~ '\n' ~ '' ~ '\n' }}
{%- endif -%}