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#!/usr/bin/env python
# vim:sw=4 ts=4 et
import _addrxlat
from _addrxlat import BaseException
_exceptions = (
('NotImplementedError', _addrxlat.ERR_NOTIMPL, (NotImplementedError,)),
('NotPresentError', _addrxlat.ERR_NOTPRESENT),
('InvalidError', _addrxlat.ERR_INVALID),
('MemoryError', _addrxlat.ERR_NOMEM, (MemoryError,)),
('NoDataError', _addrxlat.ERR_NODATA),
('NoMethodError', _addrxlat.ERR_NOMETH),
)
def new_exception(name, status, addbases=()):
'''Create an addrxlat exception for a given status code.
The new exception is derived from BaseException, but you may specify
additional base classes with addbases.
'''
def __init__(self, *args, **kwargs):
super(cls, self).__init__(status, *args, **kwargs)
def __repr__(self):
"x.__repr__() <==> repr(x)"
return "%s%r" % (self.__class__.__name__, self.args[1:])
di = {
'__doc__' : name + '([message])' + '''
If message is not specified, use the default error message.
''',
'status' : status,
'__init__' : __init__,
'__repr__' : __repr__,
}
cls = type(name, (BaseException,) + addbases, di)
return cls
def get_exception(status, *args, **kwargs):
'''get_exception(status[, message])
Get an appropriate exception for the given status. If there is no
specific exception, make an instance of BaseException.
'''
for exc in BaseException.__subclasses__():
if status == exc.status:
return exc(*args, **kwargs)
return BaseException(status, *args, **kwargs)
for _exc in _exceptions:
_cls = new_exception(*_exc)
globals()[_cls.__name__] = _cls
# Free up temporary variables
del _exc, _cls, _exceptions
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