X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=c%CE%BBash%2FCLasH%2FUtils.hs;h=2966757a038b1d2fefd6a9db51547a0bcf8d0bff;hb=31aaefbc8c86e9fff93fa4fbeaec3302c4679282;hp=822bd55dae5c7bb286552f08178dce7600ab5009;hpb=363508934b28a8d22af5689e87a0013aa2f935fa;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

diff --git "a/c\316\273ash/CLasH/Utils.hs" "b/c\316\273ash/CLasH/Utils.hs"
index 822bd55..2966757 100644
--- "a/c\316\273ash/CLasH/Utils.hs"
+++ "b/c\316\273ash/CLasH/Utils.hs"
@@ -3,13 +3,10 @@ module CLasH.Utils where
 -- Standard Imports
 import qualified Maybe
 import Data.Accessor
+import qualified Data.Accessor.Monad.Trans.State as MonadState
 import qualified Data.Map as Map
 import qualified Control.Monad as Monad
 import qualified Control.Monad.Trans.State as State
-
--- GHC API
-
--- Local Imports
   
 -- Make a caching version of a stateful computatation.
 makeCached :: (Monad m, Ord k) =>
@@ -19,14 +16,14 @@ makeCached :: (Monad m, Ord k) =>
   -> State.StateT s m v -- ^ The resulting value, from the cache or freshly
                         --   computed.
 makeCached key accessor create = do
-  cache <- getA accessor
+  cache <- MonadState.get accessor
   case Map.lookup key cache of
     -- Found in cache, just return
     Just value -> return value
     -- Not found, compute it and put it in the cache
     Nothing -> do
       value <- create
-      modA accessor (Map.insert key value)
+      MonadState.modify accessor (Map.insert key value)
       return value
 
 unzipM :: (Monad m) =>
@@ -50,3 +47,16 @@ isJustM = Monad.liftM Maybe.isJust
 andM, orM :: (Monad m) => m [Bool] -> m Bool
 andM = Monad.liftM and
 orM = Monad.liftM or
+
+-- | Monadic versions of any and all. We reimplement them, since there
+-- is no ready-made lifting function for them.
+allM, anyM :: (Monad m) => (a -> m Bool) -> [a] -> m Bool
+allM f = andM . (mapM f)
+anyM f = orM . (mapM f)
+
+mapAccumLM :: (Monad m) => (acc -> x -> m (acc, y)) -> acc -> [x] -> m (acc, [y])
+mapAccumLM _ s []        =  return (s, [])
+mapAccumLM f s (x:xs)    =  do
+  (s',  y ) <- f s x
+  (s'', ys) <- mapAccumLM f s' xs
+  return (s'', y:ys)