Initial code generation working
- Added fallback with haskell-src-exts
This commit is contained in:
Alejandro Serrano
parent
90abb89a98
commit
5fa536714f
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@ -80,9 +80,9 @@ instance ToString ((Int,Int,Int,Int),String) where
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toLisp opt x = ('(' :) . tupToString opt x . (')' :)
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toPlain opt x = tupToString opt x
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instance ToString ((Int,Int,Int,Int),[String]) where
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toLisp opt (x,y) = toSexp2 $ [('(' :) . fourIntsToString opt x . (')' :), toLisp opt y]
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toPlain opt (x,y) = inter '\n' [fourIntsToString opt x, toPlain opt y]
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instance ToString (String, (Int,Int,Int,Int),[String]) where
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toLisp opt (s,x,y) = toSexp2 $ [toLisp opt s, ('(' :) . fourIntsToString opt x . (')' :), toLisp opt y]
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toPlain opt (s,x,y) = inter '\n' [toPlain opt s, fourIntsToString opt x, toPlain opt y]
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instance ToString [(Int,Int,Int,Int)] where
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toLisp opt = toSexp2 . map toS
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@ -19,6 +19,7 @@ import qualified Language.Haskell.GhcMod.Gap as Gap
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import Language.Haskell.GhcMod.SrcUtils
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import Language.Haskell.GhcMod.Types
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import Language.Haskell.GhcMod.Convert
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import MonadUtils (liftIO)
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import Outputable (PprStyle)
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import qualified Type as Ty
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import qualified TyCon as Ty
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@ -26,6 +27,9 @@ import qualified DataCon as Ty
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import qualified HsBinds as Ty
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import qualified Class as Ty
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import OccName (OccName, occName)
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import qualified Language.Haskell.Exts.Annotated as HE
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import Debug.Trace
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----------------------------------------------------------------
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@ -54,13 +58,13 @@ splits opt file lineNo colNo = ghandle handler body
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modSum <- Gap.fileModSummary file
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splitInfo <- getSrcSpanTypeForSplit modSum lineNo colNo
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case splitInfo of
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Nothing -> return ""
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Nothing -> return $ convert opt ([] :: [String])
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Just (SplitInfo varName binding var@(_,varT) matches) -> do
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return $ convert opt $ ( toTup dflag style binding
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, toTup dflag style var
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, (map fourInts matches)
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, getTyCons dflag style varName varT)
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handler (SomeException _) = return []
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handler (SomeException _) = return $ convert opt ([] :: [String])
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getSrcSpanTypeForSplit :: G.ModSummary -> Int -> Int -> Ghc (Maybe SplitInfo)
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getSrcSpanTypeForSplit modSum lineNo colNo = do
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@ -174,6 +178,8 @@ showFieldNames dflag style v (x:xs) = let fName = showName dflag style x
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data SigInfo = Signature SrcSpan [G.RdrName] (G.HsType G.RdrName)
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| InstanceDecl SrcSpan G.Class
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data HESigInfo = HESignature HE.SrcSpan [HE.Name HE.SrcSpanInfo] (HE.Type HE.SrcSpanInfo)
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-- | Create a initial body from a signature.
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fillSig :: Options
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-> Cradle
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@ -187,10 +193,10 @@ fillSig opt cradle file lineNo colNo = withGHC' $ do
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-- | Splitting a variable in a equation.
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sig :: Options
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-> FilePath -- ^ A target file.
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-> Int -- ^ Line number.
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-> Int -- ^ Column number.
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-> Ghc String
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-> FilePath -- ^ A target file.
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-> Int -- ^ Line number.
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-> Int -- ^ Column number.
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-> Ghc String
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sig opt file lineNo colNo = ghandle handler body
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where
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body = inModuleContext file $ \dflag style -> do
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@ -199,15 +205,30 @@ sig opt file lineNo colNo = ghandle handler body
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case sigTy of
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Nothing -> return ""
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Just (Signature loc names ty) -> do
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return $ convert opt $ ( fourInts loc
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return $ convert opt $ ( "function"
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, fourInts loc
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, map (initialFnBody dflag style ty) names
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)
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Just (InstanceDecl loc cls) -> do
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return $ convert opt $ ( fourInts loc
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return $ convert opt $ ( "instance"
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, fourInts loc
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, map (initialInstBody dflag style) (Ty.classMethods cls)
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)
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handler (SomeException _) = return ""
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handler (SomeException _) = do
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-- Fallback: try to get information via haskell-src-exts
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sigTy <- getSignatureFromHE file lineNo colNo
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case sigTy of
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Just (HESignature loc names ty) -> do
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return $ convert opt $ ( "function"
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, (HE.srcSpanStartLine loc
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,HE.srcSpanStartColumn loc
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,HE.srcSpanEndLine loc
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,HE.srcSpanEndColumn loc)
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, map (initialHEFnBody ty) names
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)
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_ -> return $ convert opt ([] :: [String])
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getSignature :: G.ModSummary -> Int -> Int -> Ghc (Maybe SigInfo)
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getSignature modSum lineNo colNo = do
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@ -232,14 +253,33 @@ getSignature modSum lineNo colNo = do
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obtainClassInfo minfo clsName loc
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_ -> return Nothing
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_ -> return Nothing
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where obtainClassInfo minfo clsName loc = do
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tyThing <- G.modInfoLookupName minfo clsName
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case tyThing of
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Just (Ty.ATyCon clsCon) ->
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case G.tyConClass_maybe clsCon of
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Just cls -> return $ Just $ InstanceDecl loc cls
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Nothing -> return Nothing
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_ -> return Nothing
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obtainClassInfo :: G.ModuleInfo -> G.Name -> SrcSpan -> Ghc (Maybe SigInfo)
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obtainClassInfo minfo clsName loc = do
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tyThing <- G.modInfoLookupName minfo clsName
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case tyThing of
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Just (Ty.ATyCon clsCon) ->
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case G.tyConClass_maybe clsCon of
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Just cls -> return $ Just $ InstanceDecl loc cls
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Nothing -> return Nothing
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_ -> return Nothing
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getSignatureFromHE :: FilePath -> Int -> Int -> Ghc (Maybe HESigInfo)
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getSignatureFromHE file lineNo colNo = do
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presult <- liftIO $ HE.parseFile file
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case presult of
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HE.ParseOk (HE.Module _ _ _ _ mdecls) -> do
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let tsig = find (typeSigInRange lineNo colNo) mdecls
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case tsig of
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Just (HE.TypeSig (HE.SrcSpanInfo s _) names ty) ->
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return $ Just (HESignature s names ty)
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_ -> return Nothing
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_ -> return Nothing
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typeSigInRange :: Int -> Int -> HE.Decl HE.SrcSpanInfo -> Bool
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typeSigInRange lineNo colNo (HE.TypeSig (HE.SrcSpanInfo s _) _ _) =
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HE.srcSpanStart s <= (lineNo, colNo) && HE.srcSpanEnd s >= (lineNo, colNo)
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typeSigInRange _ _ _= False
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-- A list of function arguments, and whether they are functions or normal arguments
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-- is built from either a function signature or an instance signature
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@ -278,6 +318,21 @@ initialFnBody dflag style ty name =
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_ -> False
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in initialBody fname (args ty)
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initialHEFnBody :: HE.Type HE.SrcSpanInfo -> HE.Name HE.SrcSpanInfo -> String
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initialHEFnBody ty name =
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let fname = case name of
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HE.Ident _ s -> s
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HE.Symbol _ s -> s
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args = \case (HE.TyForall _ _ _ iTy) -> args iTy
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(HE.TyParen _ iTy) -> args iTy
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(HE.TyFun _ lTy rTy) -> (if fnarg lTy then FnArgFunction else FnArgNormal):args rTy
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_ -> []
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fnarg = \case (HE.TyForall _ _ _ iTy) -> fnarg iTy
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(HE.TyParen _ iTy) -> fnarg iTy
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(HE.TyFun _ _ _) -> True
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_ -> False
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in initialBody fname (args ty)
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initialInstBody :: DynFlags -> PprStyle -> Id -> String
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initialInstBody dflag style method =
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let fname = showOccName dflag style $ G.getOccName method -- get function name
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@ -50,13 +50,16 @@
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(if (null info)
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(message "Cannot obtain initial code")
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(let* ((ln-current (line-number-at-pos))
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(pos (car info))
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(sort (car info))
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(pos (cadr info))
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(ln-end (ghc-sinfo-get-end-line pos))
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(ln-diff (+ 1 (- ln-end ln-current)))
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(fns-to-insert (cadr info)))
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(fns-to-insert (caddr info)))
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(goto-char (line-end-position ln-diff))
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(dolist (fn-to-insert fns-to-insert)
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(newline-and-indent)
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(if (equal sort "function")
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(newline)
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(newline-and-indent))
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(insert fn-to-insert))))))
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(defun ghc-obtain-initial-code-from-signature ()
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@ -102,6 +102,7 @@ Library
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, mtl
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, monad-control
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, split
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, haskell-src-exts
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if impl(ghc < 7.7)
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Build-Depends: convertible
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, Cabal >= 1.10 && < 1.17
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