Control.Monad.CTrace

Contextual tracing monad, mtl-compatible.

Documentation

class Monad m => MonadTrace c m | m -> c where

contextual tracing monad

Minimal complete definition

update, zoom'

Methods

update :: (c -> c) -> m ()

Apply the specified function to the tracing context

zoom' :: ASetter' c c -> m a -> m a

monomorphic version of zoom operation

Instances

MonadTrace c m => MonadTrace c (MaybeT m)

Methods

update :: (c -> c) -> MaybeT m ()

zoom' :: ASetter' c c -> MaybeT m a -> MaybeT m a

MonadTrace c m => MonadTrace c (ListT m)

Methods

update :: (c -> c) -> ListT m ()

zoom' :: ASetter' c c -> ListT m a -> ListT m a

MonadTrace c m => MonadTrace c (StateT s m)

Methods

update :: (c -> c) -> StateT s m ()

zoom' :: ASetter' c c -> StateT s m a -> StateT s m a

MonadTrace c m => MonadTrace c (StateT s m)

Methods

update :: (c -> c) -> StateT s m ()

zoom' :: ASetter' c c -> StateT s m a -> StateT s m a

MonadTrace c m => MonadTrace c (IdentityT * m)

Methods

update :: (c -> c) -> IdentityT * m ()

zoom' :: ASetter' c c -> IdentityT * m a -> IdentityT * m a

MonadTrace c m => MonadTrace c (ExceptT e m)

Methods

update :: (c -> c) -> ExceptT e m ()

zoom' :: ASetter' c c -> ExceptT e m a -> ExceptT e m a

(Monoid w, MonadTrace c m) => MonadTrace c (WriterT w m)

Methods

update :: (c -> c) -> WriterT w m ()

zoom' :: ASetter' c c -> WriterT w m a -> WriterT w m a

(Monoid w, MonadTrace c m) => MonadTrace c (WriterT w m)

Methods

update :: (c -> c) -> WriterT w m ()

zoom' :: ASetter' c c -> WriterT w m a -> WriterT w m a

Monad m => MonadTrace c (TracerT c m)

Methods

update :: (c -> c) -> TracerT c m ()

zoom' :: ASetter' c c -> TracerT c m a -> TracerT c m a

MonadTrace c m => MonadTrace c (ContT * r m)

Methods

update :: (c -> c) -> ContT * r m ()

zoom' :: ASetter' c c -> ContT * r m a -> ContT * r m a

MonadTrace c m => MonadTrace c (ReaderT * r m)

Methods

update :: (c -> c) -> ReaderT * r m ()

zoom' :: ASetter' c c -> ReaderT * r m a -> ReaderT * r m a

(Monoid w, MonadTrace c m) => MonadTrace c (RWST r w s m)

Methods

update :: (c -> c) -> RWST r w s m ()

zoom' :: ASetter' c c -> RWST r w s m a -> RWST r w s m a

(Monoid w, MonadTrace c m) => MonadTrace c (RWST r w s m)

Methods

update :: (c -> c) -> RWST r w s m ()

zoom' :: ASetter' c c -> RWST r w s m a -> RWST r w s m a

data TracerT c m a

Contextual tracing monad transformer type. Tracing context c can be modified through this monad.

Instances

MonadRWS r w s m => MonadRWS r w s (TracerT c m)

MonadError e m => MonadError e (TracerT c m)

Methods

throwError :: e -> TracerT c m a

catchError :: TracerT c m a -> (e -> TracerT c m a) -> TracerT c m a

MonadReader r m => MonadReader r (TracerT c m)

Methods

ask :: TracerT c m r

local :: (r -> r) -> TracerT c m a -> TracerT c m a

reader :: (r -> a) -> TracerT c m a

MonadState s m => MonadState s (TracerT c m)

Methods

get :: TracerT c m s

put :: s -> TracerT c m ()

state :: (s -> (a, s)) -> TracerT c m a

MonadWriter w m => MonadWriter w (TracerT c m)

Methods

writer :: (a, w) -> TracerT c m a

tell :: w -> TracerT c m ()

listen :: TracerT c m a -> TracerT c m (a, w)

pass :: TracerT c m (a, w -> w) -> TracerT c m a

Monad m => MonadTrace c (TracerT c m)

Methods

update :: (c -> c) -> TracerT c m ()

zoom' :: ASetter' c c -> TracerT c m a -> TracerT c m a

MonadTrans (TracerT c)

Methods

lift :: Monad m => m a -> TracerT c m a

Monad m => Monad (TracerT c m)

Methods

(>>=) :: TracerT c m a -> (a -> TracerT c m b) -> TracerT c m b

(>>) :: TracerT c m a -> TracerT c m b -> TracerT c m b

return :: a -> TracerT c m a

fail :: String -> TracerT c m a

Functor m => Functor (TracerT c m)

Methods

fmap :: (a -> b) -> TracerT c m a -> TracerT c m b

(<$) :: a -> TracerT c m b -> TracerT c m a

MonadFix m => MonadFix (TracerT c m)

Methods

mfix :: (a -> TracerT c m a) -> TracerT c m a

Applicative m => Applicative (TracerT c m)

Methods

pure :: a -> TracerT c m a

(<*>) :: TracerT c m (a -> b) -> TracerT c m a -> TracerT c m b

(*>) :: TracerT c m a -> TracerT c m b -> TracerT c m b

(<*) :: TracerT c m a -> TracerT c m b -> TracerT c m a

MonadIO m => MonadIO (TracerT c m)

Methods

liftIO :: IO a -> TracerT c m a

MonadCont m => MonadCont (TracerT c m)

Methods

callCC :: ((a -> TracerT c m b) -> TracerT c m a) -> TracerT c m a

zoom :: ASetter' c c' -> TracerT c' m a -> TracerT c m a

Change the tracing context.

runTracerT :: ((c -> c) -> m ()) -> TracerT c m a -> m a

Run the tracer monad with the specified update action.

noTracerT :: Monad m => TracerT c m a -> m a

Run the tracer monad without tracing.

ioTracerT :: MonadIO m => c -> TracerT c m a -> m (a, c)

Run the tracer monad with update action implemented by IORef