Source code for spinn_front_end_common.interface.ds.data_row_reader
# 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/>.
from spinn_utilities.overrides import overrides
from spinn_storage_handlers.abstract_classes import (
AbstractDataReader, AbstractContextManager)
[docs]class DataRowReader(AbstractDataReader, AbstractContextManager):
__slots__ = [
"_index",
"_data",
]
def __init__(self, data):
self._index = 0
self._data = data
[docs] @overrides(AbstractDataReader.read)
def read(self, n_bytes=None):
previous = self._index
if n_bytes is None:
self._index = len(self._data)
else:
self._index += n_bytes
return self._data[previous:self._index]
[docs] @overrides(AbstractDataReader.tell)
def tell(self):
return self._index
[docs] @overrides(AbstractContextManager.close, extend_doc=False)
def close(self):
""" Does Nothing """
def __eq__(self, other):
""" Equality mainly for testing.
"""
# pylint: disable=protected-access
if not isinstance(other, DataRowReader):
return False
return self._data == other._data
def __ne__(self, other):
if not isinstance(other, DataRowReader):
return True
return not self.__eq__(other)