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"""asyncio exceptions."""
__all__ = ('BrokenBarrierError',
'CancelledError', 'InvalidStateError', 'TimeoutError',
'IncompleteReadError', 'LimitOverrunError',
'SendfileNotAvailableError')
class CancelledError(BaseException):
"""The Future or Task was cancelled."""
TimeoutError = TimeoutError # make local alias for the standard exception
class InvalidStateError(Exception):
"""The operation is not allowed in this state."""
class SendfileNotAvailableError(RuntimeError):
"""Sendfile syscall is not available.
Raised if OS does not support sendfile syscall for given socket or
file type.
"""
class IncompleteReadError(EOFError):
"""
Incomplete read error. Attributes:
- partial: read bytes string before the end of stream was reached
- expected: total number of expected bytes (or None if unknown)
"""
def __init__(self, partial, expected):
r_expected = 'undefined' if expected is None else repr(expected)
super().__init__(f'{len(partial)} bytes read on a total of '
f'{r_expected} expected bytes')
self.partial = partial
self.expected = expected
def __reduce__(self):
return type(self), (self.partial, self.expected)
class LimitOverrunError(Exception):
"""Reached the buffer limit while looking for a separator.
Attributes:
- consumed: total number of to be consumed bytes.
"""
def __init__(self, message, consumed):
super().__init__(message)
self.consumed = consumed
def __reduce__(self):
return type(self), (self.args[0], self.consumed)
class BrokenBarrierError(RuntimeError):
"""Barrier is broken by barrier.abort() call."""