Servant.Server.Internal.Handler

Documentation

newtype Handler a

Constructors

Handler

Fields

• runHandler' :: ExceptT ServantErr IO a

Instances

Monad Handler

Methods

(>>=) :: Handler a -> (a -> Handler b) -> Handler b

(>>) :: Handler a -> Handler b -> Handler b

return :: a -> Handler a

fail :: String -> Handler a

Functor Handler

Methods

fmap :: (a -> b) -> Handler a -> Handler b

(<$) :: a -> Handler b -> Handler a

Applicative Handler

Methods

pure :: a -> Handler a

(<*>) :: Handler (a -> b) -> Handler a -> Handler b

liftA2 :: (a -> b -> c) -> Handler a -> Handler b -> Handler c

(*>) :: Handler a -> Handler b -> Handler b

(<*) :: Handler a -> Handler b -> Handler a

MonadIO Handler

Methods

liftIO :: IO a -> Handler a

MonadThrow Handler

Methods

throwM :: Exception e => e -> Handler a

MonadCatch Handler

Methods

catch :: Exception e => Handler a -> (e -> Handler a) -> Handler a

MonadBase IO Handler

Methods

liftBase :: IO α -> Handler α

MonadBaseControl IO Handler

Associated Types

type StM (Handler :: * -> *) a :: *

Methods

liftBaseWith :: (RunInBase Handler IO -> IO a) -> Handler a

restoreM :: StM Handler a -> Handler a

MonadError ServantErr Handler

Methods

throwError :: ServantErr -> Handler a

catchError :: Handler a -> (ServantErr -> Handler a) -> Handler a

Generic (Handler a)

Associated Types

type Rep (Handler a) :: * -> *

Methods

from :: Handler a -> Rep (Handler a) x

to :: Rep (Handler a) x -> Handler a

type StM Handler a

type StM Handler a = Either ServantErr a

type Rep (Handler a)

type Rep (Handler a) = D1 * (MetaData "Handler" "Servant.Server.Internal.Handler" "servant-server-0.13-BOZo8GLoTgf70i45LCW8jq" True) (C1 * (MetaCons "Handler" PrefixI True) (S1 * (MetaSel (Just Symbol "runHandler'") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 * (ExceptT ServantErr IO a))))

runHandler :: Handler a -> IO (Either ServantErr a)