Source code for spinnman.messages.eieio.data_messages.key_data_element
# Copyright (c) 2017-2019 The University of Manchester
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import struct
from spinnman.exceptions import SpinnmanInvalidParameterException
from spinnman.messages.eieio import EIEIOType
from .abstract_data_element import AbstractDataElement
_ONE_SHORT = struct.Struct("<H")
_ONE_WORD = struct.Struct("<I")
[docs]class KeyDataElement(AbstractDataElement):
""" A data element that contains just a key
"""
__slots__ = [
"_key"]
def __init__(self, key):
self._key = key
@property
def key(self):
return self._key
[docs] def get_bytestring(self, eieio_type):
if eieio_type.payload_bytes != 0:
raise SpinnmanInvalidParameterException(
"eieio_type", eieio_type,
"The type specifies a payload, but this element has no"
" payload")
if eieio_type == EIEIOType.KEY_16_BIT:
return _ONE_SHORT.pack(self._key)
elif eieio_type == EIEIOType.KEY_32_BIT:
return _ONE_WORD.pack(self._key)
else:
raise SpinnmanInvalidParameterException(
"eieio_type", eieio_type, "Unknown type")
def __str__(self):
return "KeyDataElement:{}".format(hex(self._key))
def __repr__(self):
return self.__str__()