Agda.TypeChecking.Monad.Exception

Basically a copy of the ErrorT monad transformer. It's handy to slap onto TCM and still be a MonadTCM (which isn't possible with ErrorT).

Documentation

newtype ExceptionT err m a

Constructors

ExceptionT

Fields

runExceptionT :: m (Either err a)

Instances

(Error err, MonadState s m) => MonadState s (ExceptionT err m)

(Error err, MonadReader r m) => MonadReader r (ExceptionT err m)

(Error err, MonadError err' m) => MonadError err' (ExceptionT err m)

(Monad m, Error err) => MonadException err (ExceptionT err m)

MonadTrans (ExceptionT err)

(Monad m, Error err) => Monad (ExceptionT err m)

Functor f => Functor (ExceptionT err f)

(Error err, Applicative m, Monad m) => Applicative (ExceptionT err m)

(Error err, MonadIO m) => MonadIO (ExceptionT err m)

(Error err, MonadTCM tcm) => MonadTCM (ExceptionT err tcm)

(HasConstInfo m, Error err) => HasConstInfo (ExceptionT err m)

class Error err => MonadException err m | m -> err where

Methods

throwException :: err -> m a

catchException :: m a -> (err -> m a) -> m a

Instances

MonadException UnifyException Unify

(Monad m, MonadException err m, Monoid w) => MonadException err (WriterT w m)

(Monad m, MonadException err m) => MonadException err (ReaderT r m)

(Monad m, Error err) => MonadException err (ExceptionT err m)