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