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refactoring on getType

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This commit is contained in:
eagletmt 2012-02-18 20:02:37 +09:00
parent 69744de042
commit 49f00a74e8
1 changed files with 38 additions and 44 deletions
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82
Info.hs
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@ -1,4 +1,4 @@
{-# LANGUAGE CPP, Rank2Types, TupleSections #-}
{-# LANGUAGE TupleSections, FlexibleInstances #-}
module Info (infoExpr, typeExpr) where
@ -44,6 +44,27 @@ info opt fileName modstr expr =
----------------------------------------------------------------
class HasType a where
getType :: GhcMonad m => TypecheckedModule -> a -> m (Maybe (SrcSpan, Type))
instance HasType (LHsExpr Id) where
getType tcm e = do
hs_env <- getSession
(_, mbe) <- Gap.liftIO $ deSugarExpr hs_env modu rn_env ty_env e
return $ (getLoc e, ) <$> CoreUtils.exprType <$> mbe
where
modu = ms_mod $ pm_mod_summary $ tm_parsed_module tcm
rn_env = tcg_rdr_env $ fst $ tm_internals_ tcm
ty_env = tcg_type_env $ fst $ tm_internals_ tcm
instance HasType (LHsBind Id) where
getType _ (L _ FunBind{fun_id = L spn _, fun_matches = MatchGroup _ typ}) =
return $ Just (spn, typ)
getType _ _ = return Nothing
instance HasType (LPat Id) where
getType _ (L spn pat) = return $ Just (spn, hsPatType pat)
typeExpr :: Options -> ModuleString -> Int -> Int -> FilePath -> IO String
typeExpr opt modstr lineNo colNo file = Info.typeOf opt file modstr lineNo colNo
@ -54,14 +75,14 @@ typeOf opt fileName modstr lineNo colNo =
exprToType = do
modSum <- getModSummary $ mkModuleName modstr
p <- parseModule modSum
tcm <- typecheckModule p
let es = findExpr tcm lineNo colNo
ets <- catMaybes <$> mapM (getExprType tcm) es
let bs = findBind tcm lineNo colNo
bts = catMaybes $ map getBindType bs
let ps = findPat tcm lineNo colNo
pts = map getPatType ps
let sss = map toTup $ sortBy (cmp `on` fst) $ concat [ets, bts, pts]
tcm@TypecheckedModule{tm_typechecked_source = tcs} <- typecheckModule p
let bs = listifyBinds tcs (lineNo, colNo)
es = listifySpans tcs (lineNo, colNo) :: [LHsExpr Id]
ps = listifySpans tcs (lineNo, colNo) :: [LPat Id]
bts <- mapM (getType tcm) bs
ets <- mapM (getType tcm) es
pts <- mapM (getType tcm) ps
let sss = map toTup $ sortBy (cmp `on` fst) $ catMaybes $ concat [ets, bts, pts]
return $ convert opt sss
toTup :: (SrcSpan, Type) -> ((Int,Int,Int,Int),String)
@ -77,47 +98,20 @@ typeOf opt fileName modstr lineNo colNo =
errmsg = convert opt ([] :: [((Int,Int,Int,Int),String)])
findExpr :: TypecheckedModule -> Int -> Int -> [LHsExpr Id]
findExpr tcm line col =
let src = tm_typechecked_source tcm
in listifyStaged TypeChecker f src
where
f :: LHsExpr Id -> Bool
f (L spn _) = isGoodSrcSpan spn && spn `spans` (line, col)
listifyBinds tcs lc = listifyStaged TypeChecker f tcs
where
f :: LHsBind Id -> Bool
f (L _ (FunBind{fun_id = L spn _})) = isGoodSrcSpan spn && spn `spans` lc
f _ = False
findBind :: TypecheckedModule -> Int -> Int -> [LHsBind Id]
findBind TypecheckedModule{tm_typechecked_source = src} line col = listifyStaged TypeChecker f src
listifySpans :: Typeable a => TypecheckedSource -> (Int, Int) -> [Located a]
listifySpans tcs lc = listifyStaged TypeChecker p tcs
where
f :: LHsBind Id -> Bool
f (L _ (FunBind{fun_id = L spn _})) = isGoodSrcSpan spn && spn `spans` (line, col)
f _ = False
findPat :: TypecheckedModule -> Int -> Int -> [LPat Id]
findPat TypecheckedModule{tm_typechecked_source = src} line col = listifyStaged TypeChecker f src
where
f :: LPat Id -> Bool
f (L spn _) = isGoodSrcSpan spn && spn `spans` (line, col)
p (L spn _) = isGoodSrcSpan spn && spn `spans` lc
listifyStaged :: Typeable r => Stage -> (r -> Bool) -> GenericQ [r]
listifyStaged s p = everythingStaged s (++) [] ([] `mkQ` (\x -> [x | p x]))
getExprType :: GhcMonad m => TypecheckedModule -> LHsExpr Id -> m (Maybe (SrcSpan, Type))
getExprType tcm e = do
hs_env <- getSession
(_, mbe) <- Gap.liftIO $ deSugarExpr hs_env modu rn_env ty_env e
return $ (getLoc e, ) <$> CoreUtils.exprType <$> mbe
where
modu = ms_mod $ pm_mod_summary $ tm_parsed_module tcm
rn_env = tcg_rdr_env $ fst $ tm_internals_ tcm
ty_env = tcg_type_env $ fst $ tm_internals_ tcm
getBindType :: LHsBind Id -> Maybe (SrcSpan, Type)
getBindType (L _ FunBind{fun_id = L spn _, fun_matches = MatchGroup _ typ}) = Just (spn, typ)
getBindType _ = Nothing
getPatType :: LPat Id -> (SrcSpan, Type)
getPatType (L spn pat) = (spn, hsPatType pat)
pretty :: Type -> String
pretty = showDocWith OneLineMode . withPprStyleDoc (mkUserStyle neverQualify AllTheWay) . pprTypeForUser False