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#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
# License: http://snmplabs.com/pyasn1/license.html
#
__all__ = ['OpenType']
class OpenType(object):
"""Create ASN.1 type map indexed by a value
The *DefinedBy* object models the ASN.1 *DEFINED BY* clause which maps
values to ASN.1 types in the context of the ASN.1 SEQUENCE/SET type.
OpenType objects are duck-type a read-only Python :class:`dict` objects,
however the passed `typeMap` is stored by reference.
Parameters
----------
name: :py:class:`str`
Field name
typeMap: :py:class:`dict`
A map of value->ASN.1 type. It's stored by reference and can be
mutated later to register new mappings.
Examples
--------
.. code-block:: python
openType = OpenType(
'id',
{1: Integer(),
2: OctetString()}
)
Sequence(
componentType=NamedTypes(
NamedType('id', Integer()),
NamedType('blob', Any(), openType=openType)
)
)
"""
def __init__(self, name, typeMap=None):
self.__name = name
if typeMap is None:
self.__typeMap = {}
else:
self.__typeMap = typeMap
@property
def name(self):
return self.__name
# Python dict protocol
def values(self):
return self.__typeMap.values()
def keys(self):
return self.__typeMap.keys()
def items(self):
return self.__typeMap.items()
def __contains__(self, key):
return key in self.__typeMap
def __getitem__(self, key):
return self.__typeMap[key]
def __iter__(self):
return iter(self.__typeMap)
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