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|
module Vectorise.Utils.Poly (
polyAbstract,
polyApply,
polyVApply,
polyArity
)
where
import Vectorise.Vect
import Vectorise.Monad
import Vectorise.Utils.PADict
import CoreSyn
import Type
import FastString
import Control.Monad
-- Poly Functions -------------------------------------------------------------
polyAbstract :: [TyVar] -> ([Var] -> VM a) -> VM a
polyAbstract tvs p
= localV
$ do
mdicts <- mapM mk_dict_var tvs
zipWithM_ (\tv -> maybe (defLocalTyVar tv)
(defLocalTyVarWithPA tv . Var)) tvs mdicts
p (mk_args mdicts)
where
mk_dict_var tv = do
r <- paDictArgType tv
case r of
Just ty -> liftM Just (newLocalVar (fsLit "dPA") ty)
Nothing -> return Nothing
mk_args mdicts = [dict | Just dict <- mdicts]
polyArity :: [TyVar] -> VM Int
polyArity tvs = do
tys <- mapM paDictArgType tvs
return $ length [() | Just _ <- tys]
polyApply :: CoreExpr -> [Type] -> VM CoreExpr
polyApply expr tys
= do dicts <- mapM paDictOfType tys
return $ expr `mkTyApps` tys `mkApps` dicts
polyVApply :: VExpr -> [Type] -> VM VExpr
polyVApply expr tys
= do dicts <- mapM paDictOfType tys
return $ mapVect (\e -> e `mkTyApps` tys `mkApps` dicts) expr
|
