Skip to content

Derive the MonadTrans instance for WithLogger #70

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
derelbenkoenig wants to merge 1 commit into from
Closed

Derive the MonadTrans instance for WithLogger #70

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 9 additions & 2 deletions Blammo/src/Blammo/Logging/WithLogger.hs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,12 +6,19 @@ import Blammo.Logging.Logger (HasLogger (..), runLogAction)
import Control.Lens (view)
import Control.Monad.IO.Class (MonadIO (..))
import Control.Monad.Logger.Aeson (MonadLogger (..), MonadLoggerIO (..))
import Control.Monad.Reader (MonadReader, ReaderT (ReaderT), asks)
import Control.Monad.Reader (MonadReader, ReaderT (ReaderT), asks, MonadTrans)

-- | Useful with the @DerivingVia@ language extension to derive
-- 'MonadLogger' for your application monad
newtype WithLogger env m a = WithLogger (ReaderT env m a)
deriving newtype (Functor, Applicative, Monad, MonadIO, MonadReader env)
deriving newtype
( Functor
, Applicative
, Monad
, MonadIO
, MonadReader env
, MonadTrans
)

runWithLogger :: env -> WithLogger env m a -> m a
runWithLogger env (WithLogger (ReaderT f)) = f env
Expand Down
Loading