Copyright	(c) 2009-2015 Peter Trsko
License	BSD3
Stability	provisional
Portability	NoImplicitPrelude; depends on non-portable module
Safe Haskell	Safe
Language	Haskell2010

Control.Monad.TaggedException.Unsafe

Description

Unsafe exception tag cobinators and specific lifting functions. Import this module if creating new MonadException instance(s) that can not be created otherwise.

Preferably import as:

import qualified Control.Monad.TaggedException.Unsafe as Unsafe

Synopsis

Documentation

data Throws e m a Source

Exception tag.

Instances

(Monoid w, MonadReader r m, MonadWriter w m, MonadState s m) => MonadRWS r w s (Throws k * e m) Source	Since `2.1.0.0`
MonadError e m => MonadError e (Throws k * e' m) Source	Since `2.1.0.0`
MonadReader r m => MonadReader r (Throws k * e m) Source	Since `2.1.0.0`
MonadState s m => MonadState s (Throws k * e m) Source	Since `2.1.0.0`
(Monoid w, MonadWriter w m) => MonadWriter w (Throws k * e m) Source	Since `2.1.0.0`
MFunctor (Throws k * e) Source	Since `1.2.0.0`.
MMonad (Throws k * e) Source	Since `1.2.0.0`.
MonadTrans (Throws k * e) Source
Monad m => Monad (Throws k * e m) Source
Functor f => Functor (Throws k * e f) Source
Applicative f => Applicative (Throws k * e f) Source
Alternative f => Alternative (Throws k * e f) Source
MonadPlus m => MonadPlus (Throws k * e m) Source
MonadThrow m => MonadThrow (Throws k * e m) Source	Since `2.0.0.0`.
MonadCatch m => MonadCatch (Throws k * e m) Source	Since `2.0.0.0`.
MonadMask m => MonadMask (Throws k * e m) Source	Since `2.0.0.0`.
MonadIO m => MonadIO (Throws k * e m) Source
MonadCont m => MonadCont (Throws k * e m) Source	Since `2.1.0.0`
Generic (Throws k k e m a) Source
type Rep (Throws k k1 e m a) Source

throwsOne :: m a -> Throws e m a Source

Construct exception tag, but without MonadThrow restriction.

throwsTwo :: m a -> Throws e' (Throws e m) a Source

Shorthand for throwsOne . throwsOne.

throwsThree :: m a -> Throws e'' (Throws e' (Throws e m)) a Source

Shorthand for throwsOne . throwsOne . throwsOne.

hideOne :: Throws e m a -> m a Source

Hide one exceptions, but without MonadThrow restriction.

hideTwo :: Throws e (Throws e' m) a -> m a Source

Hide two exceptions, but without MonadThrow restriction.

hideThree :: Throws e (Throws e' (Throws e'' m)) a -> m a Source

Hide three exceptions, but without MonadThrow restriction.

liftT1 :: (m a -> m b) -> Throws e m a -> Throws e m b Source

liftT for functions with arity one. Isn't restricted just to MonadThrow instances.

liftT2 :: (m a -> m b -> m c) -> Throws e m a -> Throws e m b -> Throws e m c Source

liftT for functions with arity two. Isn't restricted just to MonadThrow instances.

liftT3 :: (m a -> m b -> m c -> m d) -> Throws e m a -> Throws e m b -> Throws e m c -> Throws e m d Source

liftT for functions with arity three. Isn't restricted just to MonadThrow instances.

insideT :: (m a -> m' b) -> Throws e m a -> Throws e m' b Source

Generalized liftT.

insideTf :: Functor f => (f (m a) -> m' b) -> f (Throws e m a) -> Throws e m' b Source

Variant insideT.

insideTf2 :: (Functor f, Functor f') => (f (f' (m a)) -> m' b) -> f (f' (Throws e m a)) -> Throws e m' b Source

Variant insideT.

insideT2 :: (m1 a -> m2 b -> m3 c) -> Throws e m1 a -> Throws e m2 b -> Throws e m3 c Source

Generalized liftT2.

insideT3 :: (m1 a -> m2 b -> m3 c -> m4 d) -> Throws e m1 a -> Throws e m2 b -> Throws e m3 c -> Throws e m4 d Source

Generalized liftT3.

joinT :: Throws e (Throws e m) a -> Throws e m a Source

Join two exception tags in to one. Isn't restricted just to MonadThrow instances.

joinT3 :: Throws e (Throws e (Throws e m)) a -> Throws e m a Source

Join three exception tags in to one. Isn't restricted just to MonadThrow instances.

flipT :: Throws e' (Throws e m) a -> Throws e (Throws e' m) a Source

Flip two outermost exception tags. Isn't restricted just to MonadThrow instances.

embedT :: (m a -> Throws e n b) -> Throws e m a -> Throws e n b Source

Since 1.2.0.0.

liftMask :: (((forall a. m a -> m a) -> m b) -> m b) -> ((forall a. Throws e m a -> Throws e m a) -> Throws e m b) -> Throws e m b Source

Lift operation similar to the one of mask.

liftBindLike :: (m a -> (b -> m c) -> m d) -> Throws e m a -> (b -> Throws e m c) -> Throws e m d Source

Lift operations with type similar to monadic bind. In example:

(>>=) :: Monad m => m a -> (a -> m b) -> m b

catch
    :: IO a
    -> (IOError -> IO a)
    -> IO a

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

Since 1.2.0.0.

liftFlipBindLike :: ((a -> m b) -> m c -> m d) -> (a -> Throws e m b) -> Throws e m c -> Throws e m d Source

Lift operations with type similar to flipped monadic bind. In example:

(=<<) :: Monad m => (a -> m b) -> m a -> m b

handle
    :: Exception e
    => (e -> IO a) -> IO a -> IO a

Since 1.2.0.0.

liftKleisliLike :: ((a -> m a') -> (b -> m b') -> c -> m c') -> (a -> Throws e m a') -> (b -> Throws e m b') -> c -> Throws e m c' Source

Lift klieisli composition like operations. In example:

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

(<=<)
    :: Monad m => (b -> m c) -> (a -> m b) -> a -> m c

Since 1.2.0.0.

liftCCLike :: (((a -> m b) -> m' c) -> m'' d) -> ((a -> Throws e m b) -> Throws e m' c) -> Throws e m'' d Source

Lift operation with type similar to liftCC:

liftCC
    :: Monad m => ((a -> m b) -> m a) -> m a

Since 2.1.0.0

liftHoistLike :: (forall a. m a -> n a) -> Throws e m b -> Throws e' n b Source

Generalized form of embed from instance MFunctor (Throws e).

Since 2.1.0.0

liftEmbedLike :: (forall a. m a -> Throws e n a) -> Throws e' m b -> Throws e n b Source

Generalized form of embed from instance MMonad (Throws e).

Since 2.1.0.0