Skip to content

Add MonadST instances #147

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Jun 26, 2024
Merged
Show file tree
Hide file tree
Changes from 1 commit
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
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)

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 @@ -8,6 +8,7 @@ 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 @@ -67,3 +68,5 @@ derive newtype instance monadTellIdentityT :: MonadTell w m => MonadTell w (Iden
derive newtype instance monadWriterIdentityT :: MonadWriter w m => MonadWriter w (IdentityT m)
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)
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