hasufell
/
ghc-mod
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Remove case splitting for type families

This commit is contained in:
Alejandro Serrano 2014-07-27 12:20:46 +02:00
parent f0c44e4850
commit f1d0436467
1 changed files with 8 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
Language/Haskell/GhcMod/CaseSplit.hs
View File

@ -22,10 +22,6 @@ import Outputable (ppr, PprStyle)
import qualified TyCon as Ty
import qualified Type as Ty
import Debug.Trace
import Language.Haskell.GhcMod.Doc
import ErrUtils
----------------------------------------------------------------
-- CASE SPLITTING
----------------------------------------------------------------
@ -49,7 +45,7 @@ splits file lineNo colNo = ghandle handler body
body = inModuleContext file $ \dflag style -> do
opt <- options
modSum <- Gap.fileModSummary file
whenFound' opt (getSrcSpanTypeForSplit dflag style modSum lineNo colNo) $ \x -> case x of
whenFound' opt (getSrcSpanTypeForSplit modSum lineNo colNo) $ \x -> case x of
(SplitInfo varName bndLoc (varLoc,varT) _matches) -> do
let varName' = showName dflag style varName -- Convert name to string
text <- genCaseSplitTextFile file (SplitToTextInfo varName' bndLoc varLoc $
@ -60,17 +56,17 @@ splits file lineNo colNo = ghandle handler body
text <- genCaseSplitTextFile file (SplitToTextInfo varName' bndLoc varLoc $
getTyCons dflag style varName varT)
return (fourInts bndLoc, text)
handler (SomeException e) = trace (show e) $ emptyResult =<< options
handler (SomeException _) = emptyResult =<< options
----------------------------------------------------------------
-- a. Code for getting the information of the variable
getSrcSpanTypeForSplit :: GhcMonad m => DynFlags -> PprStyle -> G.ModSummary -> Int -> Int -> m (Maybe SplitInfo)
getSrcSpanTypeForSplit dflag style modSum lineNo colNo = do
getSrcSpanTypeForSplit :: GhcMonad m => G.ModSummary -> Int -> Int -> m (Maybe SplitInfo)
getSrcSpanTypeForSplit modSum lineNo colNo = do
fn <- getSrcSpanTypeForFnSplit modSum lineNo colNo
if isJust fn
then return fn
else getSrcSpanTypeForTypeSplit dflag style modSum lineNo colNo
else getSrcSpanTypeForTypeSplit modSum lineNo colNo
-- Information for a function case split
getSrcSpanTypeForFnSplit :: GhcMonad m => G.ModSummary -> Int -> Int -> m (Maybe SplitInfo)
@ -97,23 +93,9 @@ getPatternVarName :: LPat Id -> G.Name
getPatternVarName (L _ (G.VarPat vName)) = G.getName vName
getPatternVarName _ = error "This should never happened"
-- Information for a type family case split
getSrcSpanTypeForTypeSplit :: GhcMonad m => DynFlags -> PprStyle -> G.ModSummary -> Int -> Int -> m (Maybe SplitInfo)
getSrcSpanTypeForTypeSplit dflag style modSum lineNo colNo = do
p <- G.parseModule modSum
TypecheckedModule{tm_renamed_source = Just rs
,tm_checked_module_info = modinfo} <- G.typecheckModule p
case listifyRenamedSpans rs (lineNo, colNo) :: [G.LTyFamInstEqn G.Name] of
[L loc (G.TyFamInstEqn (L _ name) _ _)] -> do
-- We found a type family instance declaration
let lst = listifyRenamedSpans rs (lineNo, colNo) :: [G.LHsType G.Name]
hsTypes = sortBy (cmp `on` G.getLoc) lst
(L varLoc (G.HsTyVar varName)):_ = trace (showOneLine dflag style $ ppr hsTypes) $ hsTypes
tcResult <- G.lookupName varName
case trace (showOneLine dflag style $ ppr tcResult) $ tcResult of
Just _ -> return $ Nothing -- Just (TySplitInfo name loc (varLoc, tcKi))
_ -> return Nothing
_ -> return Nothing
-- TODO: Information for a type family case split
getSrcSpanTypeForTypeSplit :: GhcMonad m => G.ModSummary -> Int -> Int -> m (Maybe SplitInfo)
getSrcSpanTypeForTypeSplit _modSum _lineNo _colNo = return Nothing
----------------------------------------------------------------
-- b. Code for getting the possible constructors