Update DeepSeek-R1-0528 function call chat template (#6765)

Signed-off-by: 许文卿 <xwq391974@alibaba-inc.com>

examples/chat_template/tool_chat_template_deepseekr1.jinja

 {% if not add_generation_prompt is defined %}
     {% set add_generation_prompt = false %}
 {% endif %}
-{% set ns = namespace(is_first=false, is_tool=false, is_output_first=true, system_prompt='', is_first_sp=true) %}
+{% set ns = namespace(is_first=false, is_tool=false, is_output_first=true, system_prompt='', is_first_sp=true, is_last_user=false) %}
 {%- for message in messages %}
     {%- if message['role'] == 'system' %}
         {%- if ns.is_first_sp %}
             {% set ns.system_prompt = ns.system_prompt + message['content'] %}
             {% set ns.is_first_sp = false %}
         {%- else %}
-            {% set ns.system_prompt = ns.system_prompt + '\\n\\n' + message['content'] %}
+            {% set ns.system_prompt = ns.system_prompt + '\n\n' + message['content'] %}
         {%- endif %}
     {%- endif %}
 {%- endfor %}
@@ -30,51 +30,63 @@
 {{ bos_token }}
 {{ ns.system_prompt }}
 {%- for message in messages %}
+    {% set content = message['content'] %}
     {%- if message['role'] == 'user' %}
         {%- set ns.is_tool = false -%}
-        {{'<｜User｜>' + message['content']}}
+        {%- set ns.is_first = false -%}
+        {%- set ns.is_last_user = true -%}
+        {{'<｜User｜>' + content + '<｜Assistant｜>'}}
+    {%- endif %}
+    {%- if message['role'] == 'assistant' %}
+        {% if '</think>' in content %}
+            {% set content = content.split('</think>')[-1] %}
+        {% endif %}
+    {% endif %}
+    {%- if message['role'] == 'assistant' and message['tool_calls'] is defined and message['tool_calls'] is not none %}
+        {%- set ns.is_last_user = false -%}
+        {%- if ns.is_tool %}
+            {{'<｜tool▁outputs▁end｜>'}}
         {%- endif %}
-    {%- if message['role'] == 'assistant' and 'tool_calls' in message %}
+        {%- set ns.is_first = false %}
         {%- set ns.is_tool = false -%}
+        {%- set ns.is_output_first = true %}
         {%- for tool in message['tool_calls'] %}
             {%- if not ns.is_first %}
-                {%- if message['content'] is none %}
-                    {{'<｜Assistant｜><｜tool▁calls▁begin｜><｜tool▁call▁begin｜>' + tool['type'] + '<｜tool▁sep｜>' + tool['function']['name'] + '\\n' + '```json' + '\\n' + tool['function']['arguments'] + '\\n' + '```' + '<｜tool▁call▁end｜>'}}
+                {%- if content is none %}
+                    {{'<｜tool▁calls▁begin｜><｜tool▁call▁begin｜>' + tool['type'] + '<｜tool▁sep｜>' + tool['function']['name'] + '\n' + '```json' + '\n' + tool['function']['arguments'] + '\n' + '```' + '<｜tool▁call▁end｜>'}}
                 {%- else %}
-                    {{'<｜Assistant｜>' + message['content'] + '<｜tool▁calls▁begin｜><｜tool▁call▁begin｜>' + tool['type'] + '<｜tool▁sep｜>' + tool['function']['name'] + '\\n' + '```json' + '\\n' + tool['function']['arguments'] + '\\n' + '```' + '<｜tool▁call▁end｜>'}}
+                    {{content + '<｜tool▁calls▁begin｜><｜tool▁call▁begin｜>' + tool['type'] + '<｜tool▁sep｜>' + tool['function']['name'] + '\n' + '```json' + '\n' + tool['function']['arguments'] + '\n' + '```' + '<｜tool▁call▁end｜>'}}
                 {%- endif %}
                 {%- set ns.is_first = true -%}
             {%- else %}
-                {{'\\n' + '<｜tool▁call▁begin｜>' + tool['type'] + '<｜tool▁sep｜>' + tool['function']['name'] + '\\n' + '```json' + '\\n' + tool['function']['arguments'] + '\\n' + '```' + '<｜tool▁call▁end｜>'}}
+                {{'\n' + '<｜tool▁call▁begin｜>' + tool['type'] + '<｜tool▁sep｜>' + tool['function']['name'] + '\n' + '```json' + '\n' + tool['function']['arguments'] + '\n' + '```' + '<｜tool▁call▁end｜>'}}
             {%- endif %}
         {%- endfor %}
         {{'<｜tool▁calls▁end｜><｜end▁of▁sentence｜>'}}
     {%- endif %}
-    {%- if message['role'] == 'assistant' and 'tool_calls' not in message %}
+    {%- if message['role'] == 'assistant' and (message['tool_calls'] is not defined or message['tool_calls'] is none)%}
+        {%- set ns.is_last_user = false -%}
         {%- if ns.is_tool %}
-            {{'<｜tool▁outputs▁end｜>' + message['content'] + '<｜end▁of▁sentence｜>'}}
+            {{'<｜tool▁outputs▁end｜>' + content + '<｜end▁of▁sentence｜>'}}
             {%- set ns.is_tool = false -%}
         {%- else %}
-            {% set content = message['content'] %}
-            {% if '</think>' in content %}
-                {% set content = content.split('</think>')[-1] %}
-            {% endif %}
-            {{'<｜Assistant｜>' + content + '<｜end▁of▁sentence｜>'}}
+            {{content + '<｜end▁of▁sentence｜>'}}
         {%- endif %}
     {%- endif %}
     {%- if message['role'] == 'tool' %}
+        {%- set ns.is_last_user = false -%}
         {%- set ns.is_tool = true -%}
         {%- if ns.is_output_first %}
-            {{'<｜tool▁outputs▁begin｜><｜tool▁output▁begin｜>' + message['content'] + '<｜tool▁output▁end｜>'}}
+            {{'<｜tool▁outputs▁begin｜><｜tool▁output▁begin｜>' + content + '<｜tool▁output▁end｜>'}}
             {%- set ns.is_output_first = false %}
         {%- else %}
-            {{'<｜tool▁output▁begin｜>' + message['content'] + '<｜tool▁output▁end｜>'}}
+            {{'\n<｜tool▁output▁begin｜>' + content + '<｜tool▁output▁end｜>'}}
         {%- endif %}
     {%- endif %}
 {%- endfor -%}
 {% if ns.is_tool %}
     {{'<｜tool▁outputs▁end｜>'}}
 {% endif %}
-{% if add_generation_prompt and not ns.is_tool %}
+{% if add_generation_prompt and not ns.is_last_user and not ns.is_tool %}
     {{'<｜Assistant｜>'}}
 {% endif %}