-- OK, here's the main printer
ppr_type :: Prec -> Type -> SDoc
-ppr_type _ (TyVarTy tv) -- Note [Infix type variables]
- | isSymOcc (getOccName tv) = parens (ppr tv)
- | otherwise = ppr tv
+ppr_type _ (TyVarTy tv) = ppr_tvar tv
ppr_type p (PredTy pred) = maybeParen p TyConPrec $
ifPprDebug (ptext (sLit "<pred>")) <> (pprPredTy pred)
ppr_type p (TyConApp tc tys) = pprTcApp p ppr_type tc tys
split2 ps (PredTy p `FunTy` ty) = split2 (p:ps) ty
split2 ps ty = (reverse ps, ty)
+ppr_tvar :: TyVar -> SDoc
+ppr_tvar tv -- Note [Infix type variables]
+ | isSymOcc (getOccName tv) = parens (ppr tv)
+ | otherwise = ppr tv
+
-------------------
pprForAll :: [TyVar] -> SDoc
pprForAll [] = empty
pprForAll tvs = ptext (sLit "forall") <+> sep (map pprTvBndr tvs) <> dot
pprTvBndr :: TyVar -> SDoc
-pprTvBndr tv
- | isLiftedTypeKind kind = ppr tv
- | otherwise = parens (ppr tv <+> dcolon <+> pprKind kind)
- where
- kind = tyVarKind tv
+pprTvBndr tv
+ | isLiftedTypeKind kind = ppr_tvar tv
+ | otherwise = parens (ppr_tvar tv <+> dcolon <+> pprKind kind)
+ where
+ kind = tyVarKind tv
\end{code}
Note [Infix type variables]