collectAnnValBinders,
mkDataConTag,
splitClosureTy,
- mkPlusType, mkPlusTypes, mkCrossType, mkCrossTypes, mkEmbedType,
- mkPlusAlts, mkCrosses, mkEmbed,
- mkPADictType, mkPArrayType,
+ mkPRepr, mkToPRepr, mkFromPRepr,
+ mkPADictType, mkPArrayType, mkPReprType,
parrayReprTyCon, parrayReprDataCon, mkVScrut,
+ prDictOfType, prCoerce,
paDictArgType, paDictOfType, paDFunType,
paMethod, lengthPA, replicatePA, emptyPA, liftPA,
polyAbstract, polyApply, polyVApply,
import DsUtils
import CoreSyn
import CoreUtils
+import Coercion
import Type
import TypeRep
import TyCon
import Var
import Id ( mkWildId )
import MkId ( unwrapFamInstScrut )
+import Name ( Name )
import PrelNames
import TysWiredIn
import BasicTypes ( Boxity(..) )
import Outputable
import FastString
-import Control.Monad ( liftM, zipWithM_ )
+import Data.List ( zipWith4 )
+import Control.Monad ( liftM, liftM2, zipWithM_ )
collectAnnTypeArgs :: AnnExpr b ann -> (AnnExpr b ann, [Type])
collectAnnTypeArgs expr = go expr []
mkDataConTag :: DataCon -> CoreExpr
mkDataConTag dc = mkConApp intDataCon [mkIntLitInt $ dataConTag dc]
-isClosureTyCon :: TyCon -> Bool
-isClosureTyCon tc = tyConName tc == closureTyConName
+splitUnTy :: String -> Name -> Type -> Type
+splitUnTy s name ty
+ | Just (tc, [ty']) <- splitTyConApp_maybe ty
+ , tyConName tc == name
+ = ty'
-splitClosureTy :: Type -> (Type, Type)
-splitClosureTy ty
- | Just (tc, [arg_ty, res_ty]) <- splitTyConApp_maybe ty
- , isClosureTyCon tc
- = (arg_ty, res_ty)
+ | otherwise = pprPanic s (ppr ty)
- | otherwise = pprPanic "splitClosureTy" (ppr ty)
+splitBinTy :: String -> Name -> Type -> (Type, Type)
+splitBinTy s name ty
+ | Just (tc, [ty1, ty2]) <- splitTyConApp_maybe ty
+ , tyConName tc == name
+ = (ty1, ty2)
-isPArrayTyCon :: TyCon -> Bool
-isPArrayTyCon tc = tyConName tc == parrayTyConName
+ | otherwise = pprPanic s (ppr ty)
-splitPArrayTy :: Type -> Type
-splitPArrayTy ty
- | Just (tc, [arg_ty]) <- splitTyConApp_maybe ty
- , isPArrayTyCon tc
- = arg_ty
+splitFixedTyConApp :: TyCon -> Type -> [Type]
+splitFixedTyConApp tc ty
+ | Just (tc', tys) <- splitTyConApp_maybe ty
+ , tc == tc'
+ = tys
+
+ | otherwise = pprPanic "splitFixedTyConApp" (ppr tc <+> ppr ty)
+
+splitEmbedTy :: Type -> Type
+splitEmbedTy = splitUnTy "splitEmbedTy" embedTyConName
- | otherwise = pprPanic "splitPArrayTy" (ppr ty)
+splitClosureTy :: Type -> (Type, Type)
+splitClosureTy = splitBinTy "splitClosureTy" closureTyConName
+
+splitPArrayTy :: Type -> Type
+splitPArrayTy = splitUnTy "splitPArrayTy" parrayTyConName
mkBuiltinTyConApp :: (Builtins -> TyCon) -> [Type] -> VM Type
mkBuiltinTyConApp get_tc tys
where
mk tc ty1 ty2 = mkTyConApp tc [ty1,ty2]
-mkBuiltinDataConApp :: (Builtins -> DataCon) -> [CoreExpr] -> VM CoreExpr
-mkBuiltinDataConApp get_dc args
+mkPRepr :: [[Type]] -> VM Type
+mkPRepr tys
= do
- dc <- builtin get_dc
- return $ mkConApp dc args
+ embed_tc <- builtin embedTyCon
+ sum_tcs <- builtins sumTyCon
+ prod_tcs <- builtins prodTyCon
+
+ let mk_sum [] = unitTy
+ mk_sum [ty] = ty
+ mk_sum tys = mkTyConApp (sum_tcs $ length tys) tys
-mkPlusType :: Type -> Type -> VM Type
-mkPlusType ty1 ty2 = mkBuiltinTyConApp plusTyCon [ty1, ty2]
+ mk_prod [] = unitTy
+ mk_prod [ty] = ty
+ mk_prod tys = mkTyConApp (prod_tcs $ length tys) tys
-mkPlusTypes :: Type -> [Type] -> VM Type
-mkPlusTypes = mkBuiltinTyConApps1 plusTyCon
+ mk_embed ty = mkTyConApp embed_tc [ty]
-mkPlusAlts :: [CoreExpr] -> VM [CoreExpr]
-mkPlusAlts [] = return []
-mkPlusAlts exprs
+ return . mk_sum
+ . map (mk_prod . map mk_embed)
+ $ tys
+
+mkToPRepr :: [[CoreExpr]] -> VM ([CoreExpr], Type)
+mkToPRepr ess
= do
- plus_tc <- builtin plusTyCon
- left_dc <- builtin leftDataCon
- right_dc <- builtin rightDataCon
-
- let go [expr] = ([expr], exprType expr)
- go (expr : exprs)
- | (alts, right_ty) <- go exprs
- = (mkConApp left_dc [Type left_ty, Type right_ty, expr]
- : [mkConApp right_dc [Type left_ty, Type right_ty, alt]
- | alt <- alts],
- mkTyConApp plus_tc [left_ty, right_ty])
+ embed_tc <- builtin embedTyCon
+ embed_dc <- builtin embedDataCon
+ sum_tcs <- builtins sumTyCon
+ prod_tcs <- builtins prodTyCon
+
+ let mk_sum [] = ([Var unitDataConId], unitTy)
+ mk_sum [(expr, ty)] = ([expr], ty)
+ mk_sum es = (zipWith mk_alt (tyConDataCons sum_tc) exprs,
+ mkTyConApp sum_tc tys)
where
- left_ty = exprType expr
-
- return . fst $ go exprs
+ (exprs, tys) = unzip es
+ sum_tc = sum_tcs (length es)
+ mk_alt dc expr = mkConApp dc (map Type tys ++ [expr])
+
+ mk_prod [] = (Var unitDataConId, unitTy)
+ mk_prod [(expr, ty)] = (expr, ty)
+ mk_prod es = (mkConApp prod_dc (map Type tys ++ exprs),
+ mkTyConApp prod_tc tys)
+ where
+ (exprs, tys) = unzip es
+ prod_tc = prod_tcs (length es)
+ [prod_dc] = tyConDataCons prod_tc
-mkCrossType :: Type -> Type -> VM Type
-mkCrossType ty1 ty2 = mkBuiltinTyConApp crossTyCon [ty1, ty2]
+ mk_embed expr = (mkConApp embed_dc [Type ty, expr],
+ mkTyConApp embed_tc [ty])
+ where ty = exprType expr
-mkCrossTypes :: Type -> [Type] -> VM Type
-mkCrossTypes = mkBuiltinTyConApps1 crossTyCon
+ return . mk_sum $ map (mk_prod . map mk_embed) ess
-mkCrosses :: [CoreExpr] -> VM CoreExpr
-mkCrosses [] = return (Var unitDataConId)
-mkCrosses exprs
+mkFromPRepr :: CoreExpr -> Type -> [([Var], CoreExpr)] -> VM CoreExpr
+mkFromPRepr scrut res_ty alts
= do
- cross_tc <- builtin crossTyCon
- cross_dc <- builtin crossDataCon
-
- let mk (left, left_ty) (right, right_ty)
- = (mkConApp cross_dc [Type left_ty, Type right_ty, left, right],
- mkTyConApp cross_tc [left_ty, right_ty])
-
- return . fst
- $ foldr1 mk [(expr, exprType expr) | expr <- exprs]
+ embed_dc <- builtin embedDataCon
+ sum_tcs <- builtins sumTyCon
+ prod_tcs <- builtins prodTyCon
+
+ let un_sum expr ty [(vars, res)] = un_prod expr ty vars res
+ un_sum expr ty bs
+ = do
+ ps <- mapM (newLocalVar FSLIT("p")) tys
+ bodies <- sequence
+ $ zipWith4 un_prod (map Var ps) tys vars rs
+ return . Case expr (mkWildId ty) res_ty
+ $ zipWith3 mk_alt sum_dcs ps bodies
+ where
+ (vars, rs) = unzip bs
+ tys = splitFixedTyConApp sum_tc ty
+ sum_tc = sum_tcs $ length bs
+ sum_dcs = tyConDataCons sum_tc
+
+ mk_alt dc p body = (DataAlt dc, [p], body)
+
+ un_prod expr ty [] r = return r
+ un_prod expr ty [var] r = return $ un_embed expr ty var r
+ un_prod expr ty vars r
+ = do
+ xs <- mapM (newLocalVar FSLIT("x")) tys
+ let body = foldr (\(e,t,v) r -> un_embed e t v r) r
+ $ zip3 (map Var xs) tys vars
+ return $ Case expr (mkWildId ty) res_ty
+ [(DataAlt prod_dc, xs, body)]
+ where
+ tys = splitFixedTyConApp prod_tc ty
+ prod_tc = prod_tcs $ length vars
+ [prod_dc] = tyConDataCons prod_tc
-mkEmbedType :: Type -> VM Type
-mkEmbedType ty = mkBuiltinTyConApp embedTyCon [ty]
+ un_embed expr ty var r
+ = Case expr (mkWildId ty) res_ty
+ [(DataAlt embed_dc, [var], r)]
-mkEmbed :: CoreExpr -> VM CoreExpr
-mkEmbed expr = mkBuiltinDataConApp embedDataCon
- [Type $ exprType expr, expr]
+ un_sum scrut (exprType scrut) alts
mkClosureType :: Type -> Type -> VM Type
mkClosureType arg_ty res_ty = mkBuiltinTyConApp closureTyCon [arg_ty, res_ty]
mkClosureTypes :: [Type] -> Type -> VM Type
mkClosureTypes = mkBuiltinTyConApps closureTyCon
+mkPReprType :: Type -> VM Type
+mkPReprType ty = mkBuiltinTyConApp preprTyCon [ty]
+
mkPADictType :: Type -> VM Type
mkPADictType ty = mkBuiltinTyConApp paTyCon [ty]
(tc, arg_tys) <- parrayReprTyCon (exprType ve)
return ((ve, unwrapFamInstScrut tc arg_tys le), tc, arg_tys)
+prDictOfType :: Type -> VM CoreExpr
+prDictOfType orig_ty
+ | Just (tycon, ty_args) <- splitTyConApp_maybe orig_ty
+ = do
+ dfun <- traceMaybeV "prDictOfType" (ppr tycon) (lookupTyConPR tycon)
+ prDFunApply (Var dfun) ty_args
+
+prDFunApply :: CoreExpr -> [Type] -> VM CoreExpr
+prDFunApply dfun tys
+ = do
+ args <- mapM mkDFunArg arg_tys
+ return $ mkApps mono_dfun args
+ where
+ mono_dfun = mkTyApps dfun tys
+ (arg_tys, _) = splitFunTys (exprType mono_dfun)
+
+mkDFunArg :: Type -> VM CoreExpr
+mkDFunArg ty
+ | Just (tycon, [arg]) <- splitTyConApp_maybe ty
+
+ = let name = tyConName tycon
+
+ get_dict | name == paTyConName = paDictOfType
+ | name == prTyConName = prDictOfType
+ | otherwise = pprPanic "mkDFunArg" (ppr ty)
+
+ in get_dict arg
+
+mkDFunArg ty = pprPanic "mkDFunArg" (ppr ty)
+
+prCoerce :: TyCon -> [Type] -> CoreExpr -> VM CoreExpr
+prCoerce repr_tc args expr
+ | Just arg_co <- tyConFamilyCoercion_maybe repr_tc
+ = do
+ pr_tc <- builtin prTyCon
+
+ let co = mkAppCoercion (mkTyConApp pr_tc [])
+ (mkSymCoercion (mkTyConApp arg_co args))
+
+ return $ mkCoerce co expr
+
paDictArgType :: TyVar -> VM (Maybe Type)
paDictArgType tv = go (TyVarTy tv) (tyVarKind tv)
where
projects / ghc-hetmet.git / blobdiff