| |
| .. _type.namedval: |
| |
| Enumerating numbers |
| ------------------- |
| |
| Some ASN.1 types such as :ref:`Integer <univ.Integer>`, |
| :ref:`Enumerated <univ.Enumerated>` and :ref:`BitString <univ.BitString>` |
| may enumerate their otherwise numeric values associating them with |
| human-friendly labels. |
| |
| .. code-block:: python |
| |
| class ErrorStatus(Integer): |
| """ |
| ASN.1 specification: |
| |
| error-status |
| INTEGER { |
| noError(0), |
| tooBig(1), |
| noSuchName(2), |
| ... |
| } |
| """ |
| namedValues = NamedValues( |
| ('noError', 0), ('tooBig', 1), ('noSuchName', 2) |
| ) |
| |
| The enumerated types behave exactly like the non-enumerated ones but, |
| additionally, values can be referred by labels. |
| |
| .. code-block:: python |
| |
| errorStatus = ErrorStatus('tooBig') |
| |
| assert errorStatus == 1 |
| |
| |
| .. toctree:: |
| :maxdepth: 2 |
| |
| /pyasn1/type/namedval/namedval |
