refactor(sglang): add tool call parser option

Author: Lawhy

src/strands_env/core/models.py

@@ -49,6 +49,7 @@
 from strands.models.bedrock import BedrockModel
 from strands.models.openai import OpenAIModel
 from strands_sglang import SGLangClient, SGLangModel
+from strands_sglang.tool_parser import HermesToolCallParser, ToolCallParser
 from transformers import PreTrainedTokenizerBase
 
 #: Factory that produces a fresh `Model` per step (for concurrent step isolation).
@@ -66,6 +67,7 @@ def sglang_model_factory(
     model_id: str,
     tokenizer: PreTrainedTokenizerBase,
     client: SGLangClient,
+    tool_call_parser: ToolCallParser = HermesToolCallParser(),
     sampling_params: dict[str, Any] = DEFAULT_SAMPLING_PARAMS,
     enable_thinking: bool | None = None,
 ) -> ModelFactory:
@@ -81,6 +83,7 @@ def sglang_model_factory(
     return lambda: SGLangModel(
         tokenizer=tokenizer,
         client=client,
+        tool_call_parser=tool_call_parser,
         params=sampling_params,
         model_id=model_id,
         return_logprobs=True,