Portability  unportable (GHC 7 only) 

Stability  experimental 
Maintainer  Brent Yorgey <byorgey@cis.upenn.edu> 
Safe Haskell  None 
 class Monad m => Fresh m where
 type FreshM = FreshMT Identity
 runFreshM :: FreshM a > a
 contFreshM :: FreshM a > Integer > a
 newtype FreshMT m a = FreshMT {}
 runFreshMT :: Monad m => FreshMT m a > m a
 contFreshMT :: Monad m => FreshMT m a > Integer > m a
 class Monad m => LFresh m where
 type LFreshM = LFreshMT Identity
 runLFreshM :: LFreshM a > a
 contLFreshM :: LFreshM a > Set AnyName > a
 newtype LFreshMT m a = LFreshMT {
 unLFreshMT :: ReaderT (Set AnyName) m a
 runLFreshMT :: LFreshMT m a > m a
 contLFreshMT :: LFreshMT m a > Set AnyName > m a
The Fresh
class
class Monad m => Fresh m whereSource
The Fresh
type class governs monads which can generate new
globally unique Name
s based on a given Name
.
Fresh m => Fresh (ListT m)  
Fresh m => Fresh (MaybeT m)  
Fresh m => Fresh (IdentityT m)  
Monad m => Fresh (FreshMT m)  
Fresh m => Fresh (ContT r m)  
(Error e, Fresh m) => Fresh (ErrorT e m)  
Fresh m => Fresh (ReaderT r m)  
Fresh m => Fresh (StateT s m)  
Fresh m => Fresh (StateT s m)  
(Monoid w, Fresh m) => Fresh (WriterT w m)  
(Monoid w, Fresh m) => Fresh (WriterT w m) 
contFreshM :: FreshM a > Integer > aSource
Run a FreshM computation given a starting index.
The FreshM
monad transformer. Keeps track of the lowest index
still globally unused, and increments the index every time it is
asked for a fresh name.
MonadTrans FreshMT  
MonadError e m => MonadError e (FreshMT m)  
MonadReader r m => MonadReader r (FreshMT m)  
MonadState s m => MonadState s (FreshMT m)  
MonadWriter w m => MonadWriter w (FreshMT m)  
Monad m => Monad (FreshMT m)  
Functor m => Functor (FreshMT m)  
MonadFix m => MonadFix (FreshMT m)  
MonadPlus m => MonadPlus (FreshMT m)  
(Monad m, Functor m) => Applicative (FreshMT m)  
MonadIO m => MonadIO (FreshMT m)  
MonadCont m => MonadCont (FreshMT m)  
Monad m => Fresh (FreshMT m) 
runFreshMT :: Monad m => FreshMT m a > m aSource
Run a FreshMT
computation (with the global index starting at zero).
contFreshMT :: Monad m => FreshMT m a > Integer > m aSource
Run a FreshMT
computation given a starting index for fresh name
generation.
The LFresh
class
class Monad m => LFresh m whereSource
This is the class of monads that support freshness in an (implicit) local scope. Generated names are fresh for the current local scope, not necessarily globally fresh.
lfresh :: Rep a => Name a > m (Name a)Source
Pick a new name that is fresh for the current (implicit) scope.
avoid :: [AnyName] > m a > m aSource
Avoid the given names when freshening in the subcomputation, that is, add the given names to the inscope set.
getAvoids :: m (Set AnyName)Source
Get the set of names currently being avoided.
LFresh m => LFresh (ListT m)  
LFresh m => LFresh (MaybeT m)  
LFresh m => LFresh (IdentityT m)  
Monad m => LFresh (LFreshMT m)  
LFresh m => LFresh (ContT r m)  
(Error e, LFresh m) => LFresh (ErrorT e m)  
LFresh m => LFresh (ReaderT r m)  
LFresh m => LFresh (StateT s m)  
LFresh m => LFresh (StateT s m)  
(Monoid w, LFresh m) => LFresh (WriterT w m)  
(Monoid w, LFresh m) => LFresh (WriterT w m) 
type LFreshM = LFreshMT IdentitySource
A convenient monad which is an instance of LFresh
. It keeps
track of a set of names to avoid, and when asked for a fresh one
will choose the first unused numerical name.
runLFreshM :: LFreshM a > aSource
Run a LFreshM computation in an empty context.
contLFreshM :: LFreshM a > Set AnyName > aSource
Run a LFreshM computation given a set of names to avoid.
The LFresh monad transformer. Keeps track of a set of names to avoid, and when asked for a fresh one will choose the first numeric prefix of the given name which is currently unused.
LFreshMT  

MonadTrans LFreshMT  
MonadError e m => MonadError e (LFreshMT m)  
MonadReader r m => MonadReader r (LFreshMT m)  
MonadState s m => MonadState s (LFreshMT m)  
MonadWriter w m => MonadWriter w (LFreshMT m)  
Monad m => Monad (LFreshMT m)  
Functor m => Functor (LFreshMT m)  
MonadFix m => MonadFix (LFreshMT m)  
MonadPlus m => MonadPlus (LFreshMT m)  
Applicative m => Applicative (LFreshMT m)  
MonadIO m => MonadIO (LFreshMT m)  
MonadCont m => MonadCont (LFreshMT m)  
Monad m => LFresh (LFreshMT m) 
runLFreshMT :: LFreshMT m a > m aSource
Run an LFreshMT
computation in an empty context.