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#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com>
# License: https://pyasn1.readthedocs.io/en/latest/license.html
#
class PyAsn1Error(Exception):
"""Base pyasn1 exception
`PyAsn1Error` is the base exception class (based on
:class:`Exception`) that represents all possible ASN.1 related
errors.
Parameters
----------
args:
Opaque positional parameters
Keyword Args
------------
kwargs:
Opaque keyword parameters
"""
def __init__(self, *args, **kwargs):
self._args = args
self._kwargs = kwargs
@property
def context(self):
"""Return exception context
When exception object is created, the caller can supply some opaque
context for the upper layers to better understand the cause of the
exception.
Returns
-------
: :py:class:`dict`
Dict holding context specific data
"""
return self._kwargs.get('context', {})
class ValueConstraintError(PyAsn1Error):
"""ASN.1 type constraints violation exception
The `ValueConstraintError` exception indicates an ASN.1 value
constraint violation.
It might happen on value object instantiation (for scalar types) or on
serialization (for constructed types).
"""
class SubstrateUnderrunError(PyAsn1Error):
"""ASN.1 data structure deserialization error
The `SubstrateUnderrunError` exception indicates insufficient serialised
data on input of a de-serialization codec.
"""
class EndOfStreamError(SubstrateUnderrunError):
"""ASN.1 data structure deserialization error
The `EndOfStreamError` exception indicates the condition of the input
stream has been closed.
"""
class UnsupportedSubstrateError(PyAsn1Error):
"""Unsupported substrate type to parse as ASN.1 data."""
class PyAsn1UnicodeError(PyAsn1Error, UnicodeError):
"""Unicode text processing error
The `PyAsn1UnicodeError` exception is a base class for errors relating to
unicode text de/serialization.
Apart from inheriting from :class:`PyAsn1Error`, it also inherits from
:class:`UnicodeError` to help the caller catching unicode-related errors.
"""
def __init__(self, message, unicode_error=None):
if isinstance(unicode_error, UnicodeError):
UnicodeError.__init__(self, *unicode_error.args)
PyAsn1Error.__init__(self, message)
class PyAsn1UnicodeDecodeError(PyAsn1UnicodeError, UnicodeDecodeError):
"""Unicode text decoding error
The `PyAsn1UnicodeDecodeError` exception represents a failure to
deserialize unicode text.
Apart from inheriting from :class:`PyAsn1UnicodeError`, it also inherits
from :class:`UnicodeDecodeError` to help the caller catching unicode-related
errors.
"""
class PyAsn1UnicodeEncodeError(PyAsn1UnicodeError, UnicodeEncodeError):
"""Unicode text encoding error
The `PyAsn1UnicodeEncodeError` exception represents a failure to
serialize unicode text.
Apart from inheriting from :class:`PyAsn1UnicodeError`, it also inherits
from :class:`UnicodeEncodeError` to help the caller catching
unicode-related errors.
"""