mirror of
https://github.com/urbit/shrub.git
synced 2024-12-23 19:05:48 +03:00
22 lines
547 B
Haskell
22 lines
547 B
Haskell
module Urbit.EventLog.Event
|
|
( buildLogEvent
|
|
, parseLogEvent
|
|
)
|
|
where
|
|
|
|
import ClassyPrelude
|
|
import Data.Serialize
|
|
import Urbit.Noun
|
|
|
|
buildLogEvent :: Mug -> Noun -> ByteString
|
|
buildLogEvent mug noun = (runPut $ putWord32le mug) ++ (jamBS noun)
|
|
|
|
parseLogEvent :: MonadIO m => ByteString -> m (Mug, Noun)
|
|
parseLogEvent bs = do
|
|
let (prefix, suffix) = splitAt 4 bs
|
|
let mug = case runGet getWord32le prefix of
|
|
Left _ -> error "Impossible misread of word32 in parseLogEvent"
|
|
Right x -> x
|
|
n <- cueBSExn suffix
|
|
pure (mug, n)
|