= go expr
where
go (Var v) = lookupVarEnv subst v `orElse` Var v
+ go (Cast e co) = Cast (go e) co
go (Type ty) = Type ty
go (Lit lit) = Lit lit
go (App fun arg) = App (go fun) (go arg)
dsCoercion :: ExprCoFn -> DsM CoreExpr -> DsM CoreExpr
dsCoercion CoHole thing_inside = thing_inside
dsCoercion (CoCompose c1 c2) thing_inside = dsCoercion c1 (dsCoercion c2 thing_inside)
-dsCoercion (CoLams ids c) thing_inside = do { expr <- dsCoercion c thing_inside
- ; return (mkLams ids expr) }
-dsCoercion (CoTyLams tvs c) thing_inside = do { expr <- dsCoercion c thing_inside
- ; return (mkLams tvs expr) }
-dsCoercion (CoApps c ids) thing_inside = do { expr <- dsCoercion c thing_inside
- ; return (mkVarApps expr ids) }
-dsCoercion (CoTyApps c tys) thing_inside = do { expr <- dsCoercion c thing_inside
- ; return (mkTyApps expr tys) }
-dsCoercion (CoLet bs c) thing_inside = do { prs <- dsLHsBinds bs
- ; expr <- dsCoercion c thing_inside
+dsCoercion (ExprCoFn co) thing_inside = do { expr <- thing_inside
+ ; return (Cast expr co) }
+dsCoercion (CoLam id) thing_inside = do { expr <- thing_inside
+ ; return (Lam id expr) }
+dsCoercion (CoTyLam tv) thing_inside = do { expr <- thing_inside
+ ; return (Lam tv expr) }
+dsCoercion (CoApp id) thing_inside = do { expr <- thing_inside
+ ; return (App expr (Var id)) }
+dsCoercion (CoTyApp ty) thing_inside = do { expr <- thing_inside
+ ; return (App expr (Type ty)) }
+dsCoercion (CoLet bs) thing_inside = do { prs <- dsLHsBinds bs
+ ; expr <- thing_inside
; return (Let (Rec prs) expr) }
\end{code}