_convert_message_to_dict() — langchain Function Reference

Architecture documentation for the _convert_message_to_dict() function in chat_models.py from the langchain codebase.

Function python LangChainCore LanguageModelBase calls 2 called by 1

Entity Profile

LangChainCore→ LanguageModelBase→ _convert_message_to_dict() — langchain Function Reference

Dependency Diagram

graph TD
  b36238d4_3fcc_a7ef_cadf_a0901de86384["_convert_message_to_dict()"]
  21b8cbde_a9dc_13d6_83f9_010248e2bfc8["chat_models.py"]
  b36238d4_3fcc_a7ef_cadf_a0901de86384 -->|defined in| 21b8cbde_a9dc_13d6_83f9_010248e2bfc8
  db2ab649_5bf1_261f_34a0_aed78a625fdf["_create_message_dicts()"]
  db2ab649_5bf1_261f_34a0_aed78a625fdf -->|calls| b36238d4_3fcc_a7ef_cadf_a0901de86384
  79153718_44df_faf2_a635_ffa396d910fa["_lc_tool_call_to_fireworks_tool_call()"]
  b36238d4_3fcc_a7ef_cadf_a0901de86384 -->|calls| 79153718_44df_faf2_a635_ffa396d910fa
  b85528ae_3f70_4d07_7eae_7823cb963ca8["_lc_invalid_tool_call_to_fireworks_tool_call()"]
  b36238d4_3fcc_a7ef_cadf_a0901de86384 -->|calls| b85528ae_3f70_4d07_7eae_7823cb963ca8
  style b36238d4_3fcc_a7ef_cadf_a0901de86384 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/partners/fireworks/langchain_fireworks/chat_models.py lines 158–216

def _convert_message_to_dict(message: BaseMessage) -> dict:
    """Convert a LangChain message to a dictionary.

    Args:
        message: The LangChain message.

    Returns:
        The dictionary.

    """
    message_dict: dict[str, Any]
    if isinstance(message, ChatMessage):
        message_dict = {"role": message.role, "content": message.content}
    elif isinstance(message, HumanMessage):
        message_dict = {"role": "user", "content": message.content}
    elif isinstance(message, AIMessage):
        # Translate v1 content
        if message.response_metadata.get("output_version") == "v1":
            message = _convert_from_v1_to_chat_completions(message)
        message_dict = {"role": "assistant", "content": message.content}
        if "function_call" in message.additional_kwargs:
            message_dict["function_call"] = message.additional_kwargs["function_call"]
            # If function call only, content is None not empty string
            if message_dict["content"] == "":
                message_dict["content"] = None
        if message.tool_calls or message.invalid_tool_calls:
            message_dict["tool_calls"] = [
                _lc_tool_call_to_fireworks_tool_call(tc) for tc in message.tool_calls
            ] + [
                _lc_invalid_tool_call_to_fireworks_tool_call(tc)
                for tc in message.invalid_tool_calls
            ]
        elif "tool_calls" in message.additional_kwargs:
            message_dict["tool_calls"] = message.additional_kwargs["tool_calls"]
        # If tool calls only, content is None not empty string
        if "tool_calls" in message_dict and message_dict["content"] == "":
            message_dict["content"] = None
        else:
            pass
    elif isinstance(message, SystemMessage):
        message_dict = {"role": "system", "content": message.content}
    elif isinstance(message, FunctionMessage):
        message_dict = {
            "role": "function",
            "content": message.content,
            "name": message.name,
        }
    elif isinstance(message, ToolMessage):
        message_dict = {
            "role": "tool",
            "content": message.content,
            "tool_call_id": message.tool_call_id,
        }
    else:
        msg = f"Got unknown type {message}"
        raise TypeError(msg)
    if "name" in message.additional_kwargs:
        message_dict["name"] = message.additional_kwargs["name"]
    return message_dict