Class ContentBlock

tutorials/12_session_persistence.py:73–135

消息内容块。 对应源码: session.rs:18-33 pub enum ContentBlock { Text { text: String }, ToolUse { id, name, input }, ToolResult { tool_use_id, tool_name, output, is_error }, }

@dataclass
class ContentBlock:
    """
    消息内容块。

    对应源码: session.rs:18-33
        pub enum ContentBlock {
            Text { text: String },
            ToolUse { id, name, input },
            ToolResult { tool_use_id, tool_name, output, is_error },
        }
    """
    block_type: str   # "text", "tool_use", "tool_result"
    text: str = ""
    tool_id: str = ""
    tool_name: str = ""
    tool_input: str = ""
    tool_use_id: str = ""
    output: str = ""
    is_error: bool = False

    def to_dict(self) -> dict:
        """序列化为字典（用于 JSON）"""
        if self.block_type == "text":
            return {"type": "text", "text": self.text}
        elif self.block_type == "tool_use":
            return {
                "type": "tool_use",
                "id": self.tool_id,
                "name": self.tool_name,
                "input": self.tool_input,
            }
        elif self.block_type == "tool_result":
            return {
                "type": "tool_result",
                "tool_use_id": self.tool_use_id,
                "tool_name": self.tool_name,
                "output": self.output,
                "is_error": self.is_error,
            }
        return {}

    @staticmethod
    def from_dict(data: dict) -> "ContentBlock":
        """从字典反序列化"""
        block_type = data["type"]
        if block_type == "text":
            return ContentBlock(block_type="text", text=data["text"])
        elif block_type == "tool_use":
            return ContentBlock(
                block_type="tool_use",
                tool_id=data["id"],
                tool_name=data["name"],
                tool_input=data["input"],
            )
        elif block_type == "tool_result":
            return ContentBlock(
                block_type="tool_result",
                tool_use_id=data["tool_use_id"],