44 lines
1.7 KiB
Cython
44 lines
1.7 KiB
Cython
# Copyright 2013-2017 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)
|