{-# LANGUAGE TemplateHaskell #-}
module Control.Effect.Writer.Strict
(
WriterT
, execWriter'
, runWriter'
, execWriter
, runWriter
) where
import Control.Monad (liftM)
import Data.Coerce (coerce)
import Data.Tuple (swap)
import qualified Control.Monad.Trans.Writer.CPS as W
import Control.Effect.Machinery
import Control.Effect.Writer (Writer, Writer')
newtype WriterT w m a =
WriterT { WriterT w m a -> WriterT w m a
runWriterT :: W.WriterT w m a }
deriving (Functor (WriterT w m)
a -> WriterT w m a
Functor (WriterT w m)
-> (forall a. a -> WriterT w m a)
-> (forall a b.
WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b)
-> (forall a b c.
(a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c)
-> (forall a b. WriterT w m a -> WriterT w m b -> WriterT w m b)
-> (forall a b. WriterT w m a -> WriterT w m b -> WriterT w m a)
-> Applicative (WriterT w m)
WriterT w m a -> WriterT w m b -> WriterT w m b
WriterT w m a -> WriterT w m b -> WriterT w m a
WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b
(a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c
forall a. a -> WriterT w m a
forall a b. WriterT w m a -> WriterT w m b -> WriterT w m a
forall a b. WriterT w m a -> WriterT w m b -> WriterT w m b
forall a b. WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b
forall a b c.
(a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c
forall w (m :: * -> *). Monad m => Functor (WriterT w m)
forall w (m :: * -> *) a. Monad m => a -> WriterT w m a
forall w (m :: * -> *) a b.
Monad m =>
WriterT w m a -> WriterT w m b -> WriterT w m a
forall w (m :: * -> *) a b.
Monad m =>
WriterT w m a -> WriterT w m b -> WriterT w m b
forall w (m :: * -> *) a b.
Monad m =>
WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b
forall w (m :: * -> *) a b c.
Monad m =>
(a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c
forall (f :: * -> *).
Functor f
-> (forall a. a -> f a)
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-> (forall a b. f a -> f b -> f a)
-> Applicative f
<* :: WriterT w m a -> WriterT w m b -> WriterT w m a
$c<* :: forall w (m :: * -> *) a b.
Monad m =>
WriterT w m a -> WriterT w m b -> WriterT w m a
*> :: WriterT w m a -> WriterT w m b -> WriterT w m b
$c*> :: forall w (m :: * -> *) a b.
Monad m =>
WriterT w m a -> WriterT w m b -> WriterT w m b
liftA2 :: (a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c
$cliftA2 :: forall w (m :: * -> *) a b c.
Monad m =>
(a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c
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$c<*> :: forall w (m :: * -> *) a b.
Monad m =>
WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b
pure :: a -> WriterT w m a
$cpure :: forall w (m :: * -> *) a. Monad m => a -> WriterT w m a
$cp1Applicative :: forall w (m :: * -> *). Monad m => Functor (WriterT w m)
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forall a b. a -> WriterT w m b -> WriterT w m a
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Functor m =>
a -> WriterT w m b -> WriterT w m a
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(a -> b) -> WriterT w m a -> WriterT w m b
forall (f :: * -> *).
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a -> WriterT w m b -> WriterT w m a
fmap :: (a -> b) -> WriterT w m a -> WriterT w m b
$cfmap :: forall w (m :: * -> *) a b.
Functor m =>
(a -> b) -> WriterT w m a -> WriterT w m b
Functor, Applicative (WriterT w m)
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WriterT w m a -> (a -> WriterT w m b) -> WriterT w m b)
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-> (forall a. a -> WriterT w m a)
-> Monad (WriterT w m)
WriterT w m a -> (a -> WriterT w m b) -> WriterT w m b
WriterT w m a -> WriterT w m b -> WriterT w m b
forall a. a -> WriterT w m a
forall a b. WriterT w m a -> WriterT w m b -> WriterT w m b
forall a b. WriterT w m a -> (a -> WriterT w m b) -> WriterT w m b
forall w (m :: * -> *). Monad m => Applicative (WriterT w m)
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WriterT w m a -> WriterT w m b -> WriterT w m b
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forall (m :: * -> *).
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-> (forall a b. m a -> (a -> m b) -> m b)
-> (forall a b. m a -> m b -> m b)
-> (forall a. a -> m a)
-> Monad m
return :: a -> WriterT w m a
$creturn :: forall w (m :: * -> *) a. Monad m => a -> WriterT w m a
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WriterT w m a -> (a -> WriterT w m b) -> WriterT w m b
$cp1Monad :: forall w (m :: * -> *). Monad m => Applicative (WriterT w m)
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-> (forall a. IO a -> WriterT w m a) -> MonadIO (WriterT w m)
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forall w (m :: * -> *). MonadIO m => Monad (WriterT w m)
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forall (m :: * -> *).
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liftIO :: IO a -> WriterT w m a
$cliftIO :: forall w (m :: * -> *) a. MonadIO m => IO a -> WriterT w m a
$cp1MonadIO :: forall w (m :: * -> *). MonadIO m => Monad (WriterT w m)
MonadIO)
deriving (m a -> WriterT w m a
(forall (m :: * -> *) a. Monad m => m a -> WriterT w m a)
-> MonadTrans (WriterT w)
forall w (m :: * -> *) a. Monad m => m a -> WriterT w m a
forall (m :: * -> *) a. Monad m => m a -> WriterT w m a
forall (t :: (* -> *) -> * -> *).
(forall (m :: * -> *) a. Monad m => m a -> t m a) -> MonadTrans t
lift :: m a -> WriterT w m a
$clift :: forall w (m :: * -> *) a. Monad m => m a -> WriterT w m a
MonadTrans)
deriving (Writer' tag w)
instance MonadBase b m => MonadBase b (WriterT w m) where
liftBase :: b α -> WriterT w m α
liftBase = b α -> WriterT w m α
forall (t :: (* -> *) -> * -> *) (b :: * -> *) (m :: * -> *) α.
(MonadTrans t, MonadBase b m) =>
b α -> t m α
liftBaseDefault
{-# INLINE liftBase #-}
instance (MonadBaseControl b m, Monoid w) => MonadBaseControl b (WriterT w m) where
type StM (WriterT w m) a = ComposeSt (WriterT w) m a
liftBaseWith :: (RunInBase (WriterT w m) b -> b a) -> WriterT w m a
liftBaseWith = (RunInBase (WriterT w m) b -> b a) -> WriterT w m a
forall (t :: (* -> *) -> * -> *) (b :: * -> *) (m :: * -> *) a.
(MonadTransControl t, MonadBaseControl b m) =>
(RunInBaseDefault t m b -> b a) -> t m a
defaultLiftBaseWith
{-# INLINE liftBaseWith #-}
restoreM :: StM (WriterT w m) a -> WriterT w m a
restoreM = StM (WriterT w m) a -> WriterT w m a
forall (t :: (* -> *) -> * -> *) (b :: * -> *) (m :: * -> *) a.
(MonadTransControl t, MonadBaseControl b m) =>
ComposeSt t m a -> t m a
defaultRestoreM
{-# INLINE restoreM #-}
instance Monoid w => MonadTransControl (WriterT w) where
type StT (WriterT w) a = (a, w)
liftWith :: (Run (WriterT w) -> m a) -> WriterT w m a
liftWith Run (WriterT w) -> m a
f = WriterT w m a -> WriterT w m a
forall w (m :: * -> *) a. WriterT w m a -> WriterT w m a
WriterT (WriterT w m a -> WriterT w m a)
-> (m (a, w) -> WriterT w m a) -> m (a, w) -> WriterT w m a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. m (a, w) -> WriterT w m a
forall (m :: * -> *) w a.
(Functor m, Monoid w) =>
m (a, w) -> WriterT w m a
W.writerT (m (a, w) -> WriterT w m a) -> m (a, w) -> WriterT w m a
forall a b. (a -> b) -> a -> b
$
(a -> (a, w)) -> m a -> m (a, w)
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM ( \a
x -> (a
x, w
forall a. Monoid a => a
mempty) )
( Run (WriterT w) -> m a
f (Run (WriterT w) -> m a) -> Run (WriterT w) -> m a
forall a b. (a -> b) -> a -> b
$ WriterT w n b -> n (b, w)
forall w (m :: * -> *) a. Monoid w => WriterT w m a -> m (a, w)
W.runWriterT (WriterT w n b -> n (b, w))
-> (WriterT w n b -> WriterT w n b) -> WriterT w n b -> n (b, w)
forall b c a. (b -> c) -> (a -> b) -> a -> c
. WriterT w n b -> WriterT w n b
forall w (m :: * -> *) a. WriterT w m a -> WriterT w m a
runWriterT )
{-# INLINABLE liftWith #-}
restoreT :: m (StT (WriterT w) a) -> WriterT w m a
restoreT = WriterT w m a -> WriterT w m a
forall w (m :: * -> *) a. WriterT w m a -> WriterT w m a
WriterT (WriterT w m a -> WriterT w m a)
-> (m (a, w) -> WriterT w m a) -> m (a, w) -> WriterT w m a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. m (a, w) -> WriterT w m a
forall (m :: * -> *) w a.
(Functor m, Monoid w) =>
m (a, w) -> WriterT w m a
W.writerT
{-# INLINABLE restoreT #-}
execWriter' :: forall tag w m a. (Monad m, Monoid w)
=> (Writer' tag w `Via` WriterT w) m a
-> m w
execWriter' :: Via (Writer' tag w) (WriterT w) m a -> m w
execWriter' = WriterT w m a -> m w
forall (m :: * -> *) w a.
(Monad m, Monoid w) =>
WriterT w m a -> m w
W.execWriterT (WriterT w m a -> m w)
-> (Via (Writer' tag w) (WriterT w) m a -> WriterT w m a)
-> Via (Writer' tag w) (WriterT w) m a
-> m w
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Via (Writer' tag w) (WriterT w) m a -> WriterT w m a
coerce
{-# INLINE execWriter' #-}
runWriter' :: forall tag w m a. (Functor m, Monoid w)
=> (Writer' tag w `Via` WriterT w) m a
-> m (w, a)
runWriter' :: Via (Writer' tag w) (WriterT w) m a -> m (w, a)
runWriter' = ((a, w) -> (w, a)) -> m (a, w) -> m (w, a)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (a, w) -> (w, a)
forall a b. (a, b) -> (b, a)
swap (m (a, w) -> m (w, a))
-> (Via (Writer' tag w) (WriterT w) m a -> m (a, w))
-> Via (Writer' tag w) (WriterT w) m a
-> m (w, a)
forall b c a. (b -> c) -> (a -> b) -> a -> c
. WriterT w m a -> m (a, w)
forall w (m :: * -> *) a. Monoid w => WriterT w m a -> m (a, w)
W.runWriterT (WriterT w m a -> m (a, w))
-> (Via (Writer' tag w) (WriterT w) m a -> WriterT w m a)
-> Via (Writer' tag w) (WriterT w) m a
-> m (a, w)
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Via (Writer' tag w) (WriterT w) m a -> WriterT w m a
coerce
{-# INLINE runWriter' #-}
makeUntagged ['execWriter', 'runWriter']