Safe Haskell	None
Language	Haskell2010

Control.Effect.Lift

Contents

Lift effect
Lift carrier
Re-exports

Synopsis

newtype Lift sig m k = Lift {
- unLift :: sig (m k)
}
sendM :: (Member (Lift n) sig, Carrier sig m, Functor n) => n a -> m a
runM :: LiftC m a -> m a
newtype LiftC m a = LiftC {
- runLiftC :: m a
}
class (HFunctor sig, Monad m) => Carrier sig m | m -> sig
class Member (sub :: (* -> *) -> * -> *) sup
run :: PureC a -> a

Lift effect

newtype Lift sig m k Source #

Constructors

Lift
Fields unLift :: sig (m k)

Instances

Instances details

Functor sig => Effect (Lift sig) Source #
Instance details Defined in Control.Effect.Lift Methods handle :: (Functor f, Monad m) => f () -> (forall x. f (m x) -> n (f x)) -> Lift sig m a -> Lift sig n (f a) Source #
Functor sig => HFunctor (Lift sig) Source #
Instance details Defined in Control.Effect.Lift Methods fmap' :: forall (f :: Type -> Type) a b. Functor (Lift sig f) => (a -> b) -> Lift sig f a -> Lift sig f b Source # hmap :: Functor m => (forall x. m x -> n x) -> Lift sig m a -> Lift sig n a Source #
Monad m => Carrier (Lift m) (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods eff :: Lift m (LiftC m) a -> LiftC m a Source #
Functor sig => Generic1 (Lift sig m :: Type -> Type) Source #
Instance details Defined in Control.Effect.Lift Associated Types type Rep1 (Lift sig m) :: k -> Type # Methods from1 :: forall (a :: k). Lift sig m a -> Rep1 (Lift sig m) a # to1 :: forall (a :: k). Rep1 (Lift sig m) a -> Lift sig m a #
(Functor sig, Functor m) => Functor (Lift sig m) Source #
Instance details Defined in Control.Effect.Lift Methods fmap :: (a -> b) -> Lift sig m a -> Lift sig m b # (<$) :: a -> Lift sig m b -> Lift sig m a #
type Rep1 (Lift sig m :: Type -> Type) Source #
Instance details Defined in Control.Effect.Lift type Rep1 (Lift sig m :: Type -> Type) = D1 ('MetaData "Lift" "Control.Effect.Lift" "fused-effects-0.5.0.1-inplace" 'True) (C1 ('MetaCons "Lift" 'PrefixI 'True) (S1 ('MetaSel ('Just "unLift") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (sig :.: Rec1 m)))

sendM :: (Member (Lift n) sig, Carrier sig m, Functor n) => n a -> m a Source #

Given a Lift n constraint in a signature carried by m, sendM promotes arbitrary actions of type n a to m a. It is spiritually similar to lift from the MonadTrans typeclass.

Lift carrier

runM :: LiftC m a -> m a Source #

Extract a Lifted Monadic action from an effectful computation.

newtype LiftC m a Source #

Constructors

LiftC
Fields runLiftC :: m a

Instances

Instances details

MonadTrans LiftC Source #
Instance details Defined in Control.Effect.Lift Methods lift :: Monad m => m a -> LiftC m a #
Monad m => Monad (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods (>>=) :: LiftC m a -> (a -> LiftC m b) -> LiftC m b # (>>) :: LiftC m a -> LiftC m b -> LiftC m b # return :: a -> LiftC m a #
Functor m => Functor (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods fmap :: (a -> b) -> LiftC m a -> LiftC m b # (<$) :: a -> LiftC m b -> LiftC m a #
MonadFix m => MonadFix (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods mfix :: (a -> LiftC m a) -> LiftC m a #
MonadFail m => MonadFail (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods fail :: String -> LiftC m a #
Applicative m => Applicative (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods pure :: a -> LiftC m a # (<>) :: LiftC m (a -> b) -> LiftC m a -> LiftC m b # liftA2 :: (a -> b -> c) -> LiftC m a -> LiftC m b -> LiftC m c # (>) :: LiftC m a -> LiftC m b -> LiftC m b # (<*) :: LiftC m a -> LiftC m b -> LiftC m a #
MonadIO m => MonadIO (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods liftIO :: IO a -> LiftC m a #
Alternative m => Alternative (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods empty :: LiftC m a # (<\|>) :: LiftC m a -> LiftC m a -> LiftC m a # some :: LiftC m a -> LiftC m [a] # many :: LiftC m a -> LiftC m [a] #
MonadPlus m => MonadPlus (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods mzero :: LiftC m a # mplus :: LiftC m a -> LiftC m a -> LiftC m a #
MonadUnliftIO m => MonadUnliftIO (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods askUnliftIO :: LiftC m (UnliftIO (LiftC m)) withRunInIO :: ((forall a. LiftC m a -> IO a) -> IO b) -> LiftC m b
Monad m => Carrier (Lift m) (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods eff :: Lift m (LiftC m) a -> LiftC m a Source #

Re-exports

class (HFunctor sig, Monad m) => Carrier sig m | m -> sig Source #

The class of carriers (results) for algebras (effect handlers) over signatures (effects), whose actions are given by the eff method.

Minimal complete definition

eff

Instances

Instances details

Carrier Pure PureC Source #
Instance details Defined in Control.Effect.Carrier Methods eff :: Pure PureC a -> PureC a Source #
(HFunctor eff, Carrier sig m, Member eff sig) => Carrier sig (InterposeC eff m) Source #
Instance details Defined in Control.Effect.Interpose Methods eff :: sig (InterposeC eff m) a -> InterposeC eff m a Source #
Monad m => Carrier (Lift m) (LiftC m) Source #
Instance details Defined in Control.Effect.Lift Methods eff :: Lift m (LiftC m) a -> LiftC m a Source #
(Carrier sig m, MonadIO m) => Carrier (Resource :+: sig) (ResourceC m) Source #
Instance details Defined in Control.Effect.Resource Methods eff :: (Resource :+: sig) (ResourceC m) a -> ResourceC m a Source #
(Carrier sig m, Effect sig) => Carrier (NonDet :+: sig) (NonDetC m) Source #
Instance details Defined in Control.Effect.NonDet Methods eff :: (NonDet :+: sig) (NonDetC m) a -> NonDetC m a Source #
(Carrier sig m, Effect sig) => Carrier (NonDet :+: sig) (OnceC m) Source #
Instance details Defined in Control.Effect.Cull Methods eff :: (NonDet :+: sig) (OnceC m) a -> OnceC m a Source #
(Carrier sig m, Effect sig) => Carrier (Fresh :+: sig) (FreshC m) Source #
Instance details Defined in Control.Effect.Fresh Methods eff :: (Fresh :+: sig) (FreshC m) a -> FreshC m a Source #
(Carrier sig m, Effect sig) => Carrier (Fail :+: sig) (FailC m) Source #
Instance details Defined in Control.Effect.Fail Methods eff :: (Fail :+: sig) (FailC m) a -> FailC m a Source #
(Carrier sig m, Effect sig) => Carrier (Cut :+: (NonDet :+: sig)) (CutC m) Source #
Instance details Defined in Control.Effect.Cut Methods eff :: (Cut :+: (NonDet :+: sig)) (CutC m) a -> CutC m a Source #
(Carrier sig m, Effect sig) => Carrier (Cull :+: (NonDet :+: sig)) (CullC m) Source #
Instance details Defined in Control.Effect.Cull Methods eff :: (Cull :+: (NonDet :+: sig)) (CullC m) a -> CullC m a Source #
(Carrier sig m, Effect sig) => Carrier (Trace :+: sig) (TraceByReturningC m) Source #
Instance details Defined in Control.Effect.Trace Methods eff :: (Trace :+: sig) (TraceByReturningC m) a -> TraceByReturningC m a Source #
Carrier sig m => Carrier (Trace :+: sig) (TraceByIgnoringC m) Source #
Instance details Defined in Control.Effect.Trace Methods eff :: (Trace :+: sig) (TraceByIgnoringC m) a -> TraceByIgnoringC m a Source #
(MonadIO m, Carrier sig m) => Carrier (Trace :+: sig) (TraceByPrintingC m) Source #
Instance details Defined in Control.Effect.Trace Methods eff :: (Trace :+: sig) (TraceByPrintingC m) a -> TraceByPrintingC m a Source #
(HFunctor eff, Carrier sig m) => Carrier (eff :+: sig) (InterpretC eff m) Source #
Instance details Defined in Control.Effect.Interpret Methods eff :: (eff :+: sig) (InterpretC eff m) a -> InterpretC eff m a Source #
(Carrier sig m, Effect sig) => Carrier (State s :+: sig) (StateC s m) Source #
Instance details Defined in Control.Effect.State.Strict Methods eff :: (State s :+: sig) (StateC s m) a -> StateC s m a Source #
(Carrier sig m, Effect sig) => Carrier (State s :+: sig) (StateC s m) Source #
Instance details Defined in Control.Effect.State.Lazy Methods eff :: (State s :+: sig) (StateC s m) a -> StateC s m a Source #
Carrier sig m => Carrier (Reader r :+: sig) (ReaderC r m) Source #
Instance details Defined in Control.Effect.Reader Methods eff :: (Reader r :+: sig) (ReaderC r m) a -> ReaderC r m a Source #
(Carrier sig m, Effect sig, RandomGen g) => Carrier (Random :+: sig) (RandomC g m) Source #
Instance details Defined in Control.Effect.Random Methods eff :: (Random :+: sig) (RandomC g m) a -> RandomC g m a Source #
(Carrier sig m, Effect sig) => Carrier (Error e :+: sig) (ErrorC e m) Source #
Instance details Defined in Control.Effect.Error Methods eff :: (Error e :+: sig) (ErrorC e m) a -> ErrorC e m a Source #
Carrier sig m => Carrier (Resumable err :+: sig) (ResumableWithC err m) Source #
Instance details Defined in Control.Effect.Resumable Methods eff :: (Resumable err :+: sig) (ResumableWithC err m) a -> ResumableWithC err m a Source #
(Carrier sig m, Effect sig) => Carrier (Resumable err :+: sig) (ResumableC err m) Source #
Instance details Defined in Control.Effect.Resumable Methods eff :: (Resumable err :+: sig) (ResumableC err m) a -> ResumableC err m a Source #
(Monoid w, Carrier sig m, Effect sig) => Carrier (Writer w :+: sig) (WriterC w m) Source #
Instance details Defined in Control.Effect.Writer Methods eff :: (Writer w :+: sig) (WriterC w m) a -> WriterC w m a Source #
(HFunctor eff, Carrier sig m, Effect sig) => Carrier (eff :+: sig) (InterpretStateC eff s m) Source #
Instance details Defined in Control.Effect.Interpret Methods eff :: (eff :+: sig) (InterpretStateC eff s m) a -> InterpretStateC eff s m a Source #

class Member (sub :: (* -> *) -> * -> *) sup Source #

Minimal complete definition

inj, prj

Instances

Instances details

Member sub sub Source #
Instance details Defined in Control.Effect.Sum Methods inj :: forall (m :: Type -> Type) a. sub m a -> sub m a Source # prj :: forall (m :: Type -> Type) a. sub m a -> Maybe (sub m a) Source #
Member sub sup => Member sub (sub' :+: sup) Source #
Instance details Defined in Control.Effect.Sum Methods inj :: forall (m :: Type -> Type) a. sub m a -> (sub' :+: sup) m a Source # prj :: forall (m :: Type -> Type) a. (sub' :+: sup) m a -> Maybe (sub m a) Source #
Member sub (sub :+: sup) Source #
Instance details Defined in Control.Effect.Sum Methods inj :: forall (m :: Type -> Type) a. sub m a -> (sub :+: sup) m a Source # prj :: forall (m :: Type -> Type) a. (sub :+: sup) m a -> Maybe (sub m a) Source #

run :: PureC a -> a Source #

Run an action exhausted of effects to produce its final result value.