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Simplify the Modules carrier.

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This commit is contained in:
Rob Rix 2018-10-22 12:57:58 -04:00
parent 60b27e84f5
commit 5ea78e922e
1 changed files with 7 additions and 7 deletions
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14
src/Control/Abstract/Modules.hs
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@ -86,18 +86,18 @@ runModules :: ( Member (Reader (ModuleTable (NonEmpty (Module (ModuleResult addr
, Carrier sig m
)
=> Set ModulePath
-> Evaluator term address value (ModulesC
(Evaluator term address value m)) a
-> Evaluator term address value (ModulesC address (Eff m)) a
-> Evaluator term address value m a
runModules paths = flip runModulesC paths . interpret . runEvaluator
runModules paths = raiseHandler $ flip runModulesC paths . interpret
newtype ModulesC m a = ModulesC { runModulesC :: Set ModulePath -> m a }
newtype ModulesC address m a = ModulesC { runModulesC :: Set ModulePath -> m a }
instance ( Member (Reader (ModuleTable (NonEmpty (Module (ModuleResult address))))) sig
, Member (Resumable (BaseError (LoadError address))) sig
, Carrier sig m
, Monad m
)
=> Carrier (Modules address :+: sig) (ModulesC (Evaluator term address value m)) where
=> Carrier (Modules address :+: sig) (ModulesC address m) where
ret = ModulesC . const . ret
eff op = ModulesC (\ paths -> (alg paths \/ (eff . handlePure (flip runModulesC paths))) op)
where alg paths (Load name k) = askModuleTable >>= maybeM (throwLoadError (ModuleNotFoundError name)) . fmap (runMerging . foldMap1 (Merging . moduleBody)) . ModuleTable.lookup name >>= flip runModulesC paths . k
@ -105,7 +105,7 @@ instance ( Member (Reader (ModuleTable (NonEmpty (Module (ModuleResult address))
alg paths (Resolve names k) = runModulesC (k (find (`Set.member` paths) names)) paths
alg paths (List dir k) = runModulesC (k (filter ((dir ==) . takeDirectory) (toList paths))) paths
askModuleTable :: (Member (Reader (ModuleTable (NonEmpty (Module (ModuleResult address))))) sig, Carrier sig m) => Evaluator term address value m (ModuleTable (NonEmpty (Module (ModuleResult address))))
askModuleTable :: (Member (Reader (ModuleTable (NonEmpty (Module (ModuleResult address))))) sig, Carrier sig m) => m (ModuleTable (NonEmpty (Module (ModuleResult address))))
askModuleTable = ask
@ -142,7 +142,7 @@ runLoadErrorWith f = raiseHandler $ runResumableWith (runEvaluator . f)
throwLoadError :: (Member (Resumable (BaseError (LoadError address))) sig, Carrier sig m)
=> LoadError address resume
-> Evaluator term address value m resume
-> m resume
throwLoadError err@(ModuleNotFoundError name) = throwResumable $ BaseError (ModuleInfo name) emptySpan err