44 lines
1.7 KiB
Cython
44 lines
1.7 KiB
Cython
# Copyright 2013-2016 DataStax, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from cassandra.buffer cimport Buffer
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cdef class Deserializer:
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# The cqltypes._CassandraType corresponding to this deserializer
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cdef object cqltype
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# String may be empty, whereas other values may not be.
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# Other values may be NULL, in which case the integer length
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# of the binary data is negative. However, non-string types
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# may also return a zero length for legacy reasons
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# (see http://code.metager.de/source/xref/apache/cassandra/doc/native_protocol_v3.spec
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# paragraph 6)
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cdef bint empty_binary_ok
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cdef deserialize(self, Buffer *buf, int protocol_version)
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# cdef deserialize(self, CString byts, protocol_version)
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cdef inline object from_binary(Deserializer deserializer,
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Buffer *buf,
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int protocol_version):
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if buf.size < 0:
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return None
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elif buf.size == 0 and not deserializer.empty_binary_ok:
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return _ret_empty(deserializer, buf.size)
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else:
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return deserializer.deserialize(buf, protocol_version)
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cdef _ret_empty(Deserializer deserializer, Py_ssize_t buf_size)
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