refactoring Browse.
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Browse.hs
80
Browse.hs
@ -38,52 +38,50 @@ browse opt mdlName = withGHC $ do
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where
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lookupModuleInfo = findModule (mkModuleName mdlName) Nothing >>= getModuleInfo
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processExports :: ModuleInfo -> [String]
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processExports = map getOccString . modInfoExports
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processExports :: ModuleInfo -> [String]
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processExports = map getOccString . modInfoExports
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processModule :: ModuleInfo -> Ghc [String]
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processModule minfo = do
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dynFlags <- getDynFlags
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let processName :: Name -> Ghc String
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processName nm = do
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tyInfo <- modInfoLookupName minfo nm
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-- If nothing found, load dependent module and lookup global
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tyResult <- maybe inOtherModule (return . Just) tyInfo
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return $ fromMaybe name (tyResult >>= showThing dynFlags)
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where
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inOtherModule :: Ghc (Maybe TyThing)
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inOtherModule = do
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_ <- getModuleInfo (nameModule nm) -- FIXME
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lookupGlobalName nm
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name = getOccString nm
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mapM processName exports
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where
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exports = modInfoExports minfo
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processModule :: ModuleInfo -> Ghc [String]
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processModule minfo = do
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dynFlags <- getDynFlags
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mapM (processName dynFlags) names
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where
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names = modInfoExports minfo
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processName :: DynFlags -> Name -> Ghc String
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processName dynFlags nm = do
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tyInfo <- modInfoLookupName minfo nm
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-- If nothing found, load dependent module and lookup global
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tyResult <- maybe (inOtherModule nm) (return . Just) tyInfo
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return $ fromMaybe (getOccString nm) (tyResult >>= showThing dynFlags)
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inOtherModule :: Name -> Ghc (Maybe TyThing)
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inOtherModule nm = do
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_ <- getModuleInfo (nameModule nm) -- FIXME
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lookupGlobalName nm
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showThing :: DynFlags -> TyThing -> Maybe String
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showThing dflags t = case t of
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AnId i -> Just $ getOccString i ++ " :: " ++ showOutputable dflags (removeForAlls $ varType i)
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ATyCon typ -> do
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showThing :: DynFlags -> TyThing -> Maybe String
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showThing dflags t = case t of
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AnId i -> Just $ getOccString i ++ " :: " ++ showOutputable dflags (removeForAlls $ varType i)
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ATyCon typ -> do
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tyType' <- tyType typ
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return $ unwords $ [tyType', getOccString typ] ++ map getOccString (tyConTyVars typ)
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_ -> Nothing
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where
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tyType :: TyCon -> Maybe String
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tyType typ
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| isAlgTyCon typ
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&& not (isNewTyCon typ)
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&& not (isClassTyCon typ) = Just "data"
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| isNewTyCon typ = Just "newtype"
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| isClassTyCon typ = Just "class"
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| isSynTyCon typ = Just "type"
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| otherwise = Nothing
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_ -> Nothing
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where
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tyType :: TyCon -> Maybe String
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tyType typ
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| isAlgTyCon typ
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&& not (isNewTyCon typ)
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&& not (isClassTyCon typ) = Just "data"
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| isNewTyCon typ = Just "newtype"
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| isClassTyCon typ = Just "class"
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| isSynTyCon typ = Just "type"
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| otherwise = Nothing
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removeForAlls :: Type -> Type
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removeForAlls ty = case splitFunTy_maybe ty' of
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Nothing -> ty'
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Just (pre, ftype) -> if isPredTy pre then mkFunTy pre (dropForAlls ftype) else ty'
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where
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ty' = dropForAlls ty
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removeForAlls :: Type -> Type
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removeForAlls ty = case splitFunTy_maybe ty' of
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Nothing -> ty'
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Just (pre, ftype) -> if isPredTy pre then mkFunTy pre (dropForAlls ftype) else ty'
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where
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ty' = dropForAlls ty
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showOutputable :: Outputable a => DynFlags -> a -> String
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showOutputable dflags = unwords . lines . showSDocForUser dflags neverQualify . ppr
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