-- expression itself.
subeverywhere :: Transform -> Transform
subeverywhere trans c (App a b) = do
- a' <- trans (Other:c) a
- b' <- trans (Other:c) b
+ a' <- trans (AppFirst:c) a
+ b' <- trans (AppSecond:c) b
return $ App a' b'
subeverywhere trans c (Let (NonRec b bexpr) expr) = do
- bexpr' <- trans (Other:c) bexpr
- expr' <- trans (Other:c) expr
+ bexpr' <- trans (LetBinding:c) bexpr
+ expr' <- trans (LetBody:c) expr
return $ Let (NonRec b bexpr') expr'
subeverywhere trans c (Let (Rec binds) expr) = do
- expr' <- trans (Other:c) expr
+ expr' <- trans (LetBody:c) expr
binds' <- mapM transbind binds
return $ Let (Rec binds') expr'
where
transbind :: (CoreBndr, CoreExpr) -> TransformMonad (CoreBndr, CoreExpr)
transbind (b, e) = do
- e' <- trans (Other:c) e
+ e' <- trans (LetBinding:c) e
return (b, e')
subeverywhere trans c (Lam x expr) = do
subeverywhere trans c expr = error $ "\nNormalizeTools.subeverywhere: Unsupported expression: " ++ show expr
--- Apply the given transformation to all expressions, except for direct
--- arguments of an application
-notappargs :: (String, Transform) -> Transform
-notappargs trans = applyboth (subnotappargs trans) trans
-
--- Apply the given transformation to all (direct and indirect) subexpressions
--- (but not the expression itself), except for direct arguments of an
--- application
-subnotappargs :: (String, Transform) -> Transform
-subnotappargs trans c (App a b) = do
- a' <- subnotappargs trans (Other:c) a
- b' <- subnotappargs trans (Other:c) b
- return $ App a' b'
-
--- Let subeverywhere handle all other expressions
-subnotappargs trans c expr = subeverywhere (notappargs trans) c expr
-
-- Runs each of the transforms repeatedly inside the State monad.
dotransforms :: [Transform] -> CoreExpr -> TranslatorSession CoreExpr
dotransforms transs expr = do