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- """Shared code between dmypy.py and dmypy_server.py.
- This should be pretty lightweight and not depend on other mypy code (other than ipc).
- """
- from __future__ import annotations
- import json
- from typing import Any, Final
- from mypy.ipc import IPCBase
- DEFAULT_STATUS_FILE: Final = ".dmypy.json"
- def receive(connection: IPCBase) -> Any:
- """Receive JSON data from a connection until EOF.
- Raise OSError if the data received is not valid JSON or if it is
- not a dict.
- """
- bdata = connection.read()
- if not bdata:
- raise OSError("No data received")
- try:
- data = json.loads(bdata.decode("utf8"))
- except Exception as e:
- raise OSError("Data received is not valid JSON") from e
- if not isinstance(data, dict):
- raise OSError(f"Data received is not a dict ({type(data)})")
- return data
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