Skip to content

Commit

Permalink
Add MonadST instances (#147)
Browse files Browse the repository at this point in the history
Co-authored-by: Thomas Honeyman <[email protected]>
  • Loading branch information
rhendric and thomashoneyman authored Jun 26, 2024
1 parent e201457 commit f73aa4e
Show file tree
Hide file tree
Showing 11 changed files with 32 additions and 0 deletions.
1 change: 1 addition & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ Notable changes to this project are documented in this file. The format is based
Breaking changes:

New features:
- Add `MonadST` instances for all monad transformers (#147 by @rhendric)
- Add `ComonadAsk`, `ComonadEnv`, and `ComonadTraced` instances for `StoreT`, `EnvT`, and `TracedT` (#145 by @skeate)

Bugfixes:
Expand Down
1 change: 1 addition & 0 deletions bower.json
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
"purescript-maybe": "^6.0.0",
"purescript-newtype": "^5.0.0",
"purescript-prelude": "^6.0.0",
"purescript-st": "^6.2.0",
"purescript-tailrec": "^6.0.0",
"purescript-tuples": "^7.0.0",
"purescript-unfoldable": "^6.0.0"
Expand Down
4 changes: 4 additions & 0 deletions src/Control/Monad/Cont/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ import Prelude
import Control.Apply (lift2)
import Control.Monad.Cont.Class (class MonadCont, callCC)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader, ask, local)
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState, state)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Data.Newtype (class Newtype)
Expand Down Expand Up @@ -75,3 +76,6 @@ instance semigroupContT :: (Apply m, Semigroup a) => Semigroup (ContT r m a) whe

instance monoidContT :: (Applicative m, Monoid a) => Monoid (ContT r m a) where
mempty = pure mempty

instance MonadST s m => MonadST s (ContT r m) where
liftST = lift <<< liftST
3 changes: 3 additions & 0 deletions src/Control/Monad/Except/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import Control.Monad.Cont.Class (class MonadCont, callCC)
import Control.Monad.Error.Class (class MonadThrow, class MonadError, throwError, catchError)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader, ask, local)
import Control.Monad.Rec.Class (class MonadRec, tailRecM, Step(..))
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState, state)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.Monad.Writer.Class (class MonadWriter, class MonadTell, pass, listen, tell)
Expand Down Expand Up @@ -141,3 +142,5 @@ instance semigroupExceptT :: (Monad m, Semigroup a) => Semigroup (ExceptT e m a)
instance monoidExceptT :: (Monad m, Monoid a) => Monoid (ExceptT e m a) where
mempty = pure mempty

instance MonadST s m => MonadST s (ExceptT e m) where
liftST = lift <<< liftST
3 changes: 3 additions & 0 deletions src/Control/Monad/Identity/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ import Control.Monad.Cont.Class (class MonadCont)
import Control.Monad.Error.Class (class MonadError, class MonadThrow)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader)
import Control.Monad.Rec.Class (class MonadRec)
import Control.Monad.ST.Class (class MonadST)
import Control.Monad.State.Class (class MonadState)
import Control.Monad.Trans.Class (class MonadTrans)
import Control.Monad.Writer.Class (class MonadTell, class MonadWriter)
Expand Down Expand Up @@ -69,6 +70,8 @@ derive newtype instance monadWriterIdentityT :: MonadWriter w m => MonadWriter w
derive newtype instance foldableIdentityT :: Foldable m => Foldable (IdentityT m)
derive newtype instance traversableIdentityT :: Traversable m => Traversable (IdentityT m)

derive newtype instance MonadST s m => MonadST s (IdentityT m)

instance extendIdentityI :: Extend w => Extend (IdentityT w) where
extend f (IdentityT m) = IdentityT (extend (f <<< IdentityT) m)

Expand Down
4 changes: 4 additions & 0 deletions src/Control/Monad/List/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@ import Prelude
import Control.Alt (class Alt)
import Control.Alternative (class Alternative)
import Control.Monad.Rec.Class as MR
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.MonadPlus (class MonadPlus)
import Control.Plus (class Plus)
Expand Down Expand Up @@ -325,3 +326,6 @@ instance monadPlusListT :: Monad f => MonadPlus (ListT f)

instance monadEffectListT :: MonadEffect m => MonadEffect (ListT m) where
liftEffect = lift <<< liftEffect

instance MonadST s m => MonadST s (ListT m) where
liftST = lift <<< liftST
3 changes: 3 additions & 0 deletions src/Control/Monad/Maybe/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ import Control.Monad.Cont.Class (class MonadCont, callCC)
import Control.Monad.Error.Class (class MonadThrow, class MonadError, catchError, throwError)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader, ask, local)
import Control.Monad.Rec.Class (class MonadRec, tailRecM, Step(..))
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState, state)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.Monad.Writer.Class (class MonadWriter, class MonadTell, pass, listen, tell)
Expand Down Expand Up @@ -126,3 +127,5 @@ instance semigroupMaybeT :: (Monad m, Semigroup a) => Semigroup (MaybeT m a) whe
instance monoidMaybeT :: (Monad m, Monoid a) => Monoid (MaybeT m a) where
mempty = pure mempty

instance MonadST s m => MonadST s (MaybeT m) where
liftST = lift <<< liftST
3 changes: 3 additions & 0 deletions src/Control/Monad/RWS/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import Control.Lazy (class Lazy)
import Control.Monad.Error.Class (class MonadThrow, class MonadError, throwError, catchError)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader)
import Control.Monad.Rec.Class (class MonadRec, tailRecM, Step(..))
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.Monad.Writer.Class (class MonadWriter, class MonadTell)
Expand Down Expand Up @@ -138,3 +139,5 @@ instance semigroupRWST :: (Bind m, Monoid w, Semigroup a) => Semigroup (RWST r w
instance monoidRWST :: (Monad m, Monoid w, Monoid a) => Monoid (RWST r w s m a) where
mempty = pure mempty

instance (Monoid w, MonadST s m) => MonadST s (RWST r w s' m) where
liftST = lift <<< liftST
4 changes: 4 additions & 0 deletions src/Control/Monad/Reader/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import Control.Monad.Cont.Class (class MonadCont, callCC)
import Control.Monad.Error.Class (class MonadThrow, class MonadError, catchError, throwError)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader, ask, asks, local)
import Control.Monad.Rec.Class (class MonadRec, tailRecM)
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState, state)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.Monad.Writer.Class (class MonadWriter, class MonadTell, pass, listen, tell)
Expand Down Expand Up @@ -119,3 +120,6 @@ instance monadRecReaderT :: MonadRec m => MonadRec (ReaderT r m) where
tailRecM k a = ReaderT \r -> tailRecM (k' r) a
where
k' r a' = case k a' of ReaderT f -> pure =<< f r

instance MonadST s m => MonadST s (ReaderT r m) where
liftST = lift <<< liftST
3 changes: 3 additions & 0 deletions src/Control/Monad/State/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ import Control.Monad.Cont.Class (class MonadCont, callCC)
import Control.Monad.Error.Class (class MonadThrow, class MonadError, catchError, throwError)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader, ask, local)
import Control.Monad.Rec.Class (class MonadRec, tailRecM, Step(..))
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState, get, gets, modify, modify_, put, state)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.Monad.Writer.Class (class MonadWriter, class MonadTell, pass, listen, tell)
Expand Down Expand Up @@ -142,3 +143,5 @@ instance semigroupStateT :: (Monad m, Semigroup a) => Semigroup (StateT s m a) w
instance monoidStateT :: (Monad m, Monoid a) => Monoid (StateT s m a) where
mempty = pure mempty

instance MonadST s m => MonadST s (StateT s' m) where
liftST = lift <<< liftST
3 changes: 3 additions & 0 deletions src/Control/Monad/Writer/Trans.purs
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import Control.Monad.Cont.Class (class MonadCont, callCC)
import Control.Monad.Error.Class (class MonadThrow, class MonadError, catchError, throwError)
import Control.Monad.Reader.Class (class MonadAsk, class MonadReader, ask, local)
import Control.Monad.Rec.Class (class MonadRec, tailRecM, Step(..))
import Control.Monad.ST.Class (class MonadST, liftST)
import Control.Monad.State.Class (class MonadState, state)
import Control.Monad.Trans.Class (class MonadTrans, lift)
import Control.Monad.Writer.Class (class MonadTell, tell, class MonadWriter, censor, listen, listens, pass)
Expand Down Expand Up @@ -130,3 +131,5 @@ instance semigroupWriterT :: (Apply m, Semigroup w, Semigroup a) => Semigroup (W
instance monoidWriterT :: (Applicative m, Monoid w, Monoid a) => Monoid (WriterT w m a) where
mempty = pure mempty

instance (Monoid w, MonadST s m) => MonadST s (WriterT w m) where
liftST = lift <<< liftST

0 comments on commit f73aa4e

Please sign in to comment.