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# Copyright (C) 2016-present the asyncpg authors and contributors
# <see AUTHORS file>
#
# This module is part of asyncpg and is released under
# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
from asyncpg import exceptions
cdef inline record_encode_frame(ConnectionSettings settings, WriteBuffer buf,
WriteBuffer elem_data, int32_t elem_count):
buf.write_int32(4 + elem_data.len())
# attribute count
buf.write_int32(elem_count)
# encoded attribute data
buf.write_buffer(elem_data)
cdef anonymous_record_decode(ConnectionSettings settings, FRBuffer *buf):
cdef:
tuple result
ssize_t elem_count
ssize_t i
int32_t elem_len
uint32_t elem_typ
Codec elem_codec
FRBuffer elem_buf
elem_count = <ssize_t><uint32_t>hton.unpack_int32(frb_read(buf, 4))
result = cpython.PyTuple_New(elem_count)
for i in range(elem_count):
elem_typ = <uint32_t>hton.unpack_int32(frb_read(buf, 4))
elem_len = hton.unpack_int32(frb_read(buf, 4))
if elem_len == -1:
elem = None
else:
elem_codec = settings.get_data_codec(elem_typ)
if elem_codec is None or not elem_codec.has_decoder():
raise exceptions.InternalClientError(
'no decoder for composite type element in '
'position {} of type OID {}'.format(i, elem_typ))
elem = elem_codec.decode(settings,
frb_slice_from(&elem_buf, buf, elem_len))
cpython.Py_INCREF(elem)
cpython.PyTuple_SET_ITEM(result, i, elem)
return result
cdef anonymous_record_encode(ConnectionSettings settings, WriteBuffer buf, obj):
raise exceptions.UnsupportedClientFeatureError(
'input of anonymous composite types is not supported',
hint=(
'Consider declaring an explicit composite type and '
'using it to cast the argument.'
),
detail='PostgreSQL does not implement anonymous composite type input.'
)
cdef init_record_codecs():
register_core_codec(RECORDOID,
<encode_func>anonymous_record_encode,
<decode_func>anonymous_record_decode,
PG_FORMAT_BINARY)
init_record_codecs()
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