| from __future__ import annotations | |
| class HarnessError(Exception): | |
| """Base exception for SDK and runtime failures.""" | |
| class TransportClosedError(HarnessError): | |
| """Raised when the runtime subprocess exits or closes stdout.""" | |
| class SdkProtocolError(HarnessError): | |
| """Raised when the runtime sends data outside the SDK protocol.""" | |
| class JsonRpcError(HarnessError): | |
| """Raised when the runtime returns a JSON-RPC error response.""" | |
| def __init__(self, code: int | None, message: str, data: object | None = None) -> None: | |
| super().__init__(message) | |
| self.code = code | |
| self.message = message | |
| self.data = data | |