/usr/lib/python3/dist-packages/cassandra/deserializers.pxd is in python3-cassandra 3.7.1-2.1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | # Copyright 2013-2016 DataStax, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from cassandra.buffer cimport Buffer
cdef class Deserializer:
# The cqltypes._CassandraType corresponding to this deserializer
cdef object cqltype
# String may be empty, whereas other values may not be.
# Other values may be NULL, in which case the integer length
# of the binary data is negative. However, non-string types
# may also return a zero length for legacy reasons
# (see http://code.metager.de/source/xref/apache/cassandra/doc/native_protocol_v3.spec
# paragraph 6)
cdef bint empty_binary_ok
cdef deserialize(self, Buffer *buf, int protocol_version)
# cdef deserialize(self, CString byts, protocol_version)
cdef inline object from_binary(Deserializer deserializer,
Buffer *buf,
int protocol_version):
if buf.size < 0:
return None
elif buf.size == 0 and not deserializer.empty_binary_ok:
return _ret_empty(deserializer, buf.size)
else:
return deserializer.deserialize(buf, protocol_version)
cdef _ret_empty(Deserializer deserializer, Py_ssize_t buf_size)
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