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PostgreSQL driver for Elixir
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lib/postgrex/extensions/record.ex
defmodule Postgrex.Extensions.Record do
@moduledoc false
import Postgrex.BinaryUtils, warn: false
@behaviour Postgrex.SuperExtension
def init(_), do: nil
def matching(_),
do: [send: "record_send"]
def format(_),
do: :super_binary
def oids(%Postgrex.TypeInfo{comp_elems: []}, _),
do: nil
def oids(%Postgrex.TypeInfo{comp_elems: comp_oids}, _),
do: comp_oids
def encode(_) do
quote location: :keep do
tuple, oids, types when is_tuple(tuple) ->
# encode_tuple/3 defined by TypeModule
data = encode_tuple(tuple, oids, types)
[<<IO.iodata_length(data) + 4::int32, tuple_size(tuple)::int32>> | data]
other, _, _ ->
raise DBConnection.EncodeError, Postgrex.Utils.encode_msg(other, "a tuple")
end
end
def decode(_) do
quote location: :keep do
<<len::int32, binary::binary-size(len)>>, nil, types ->
<<count::int32, data::binary>> = binary
# decode_tuple/3 defined by TypeModule
decode_tuple(data, count, types)
<<len::int32, binary::binary-size(len)>>, oids, types ->
<<_::int32, data::binary>> = binary
# decode_tuple/3 defined by TypeModule
decode_tuple(data, oids, types)
end
end
end