| HsPArrTy (LHsType name) -- Elem. type of parallel array: [:t:]
+ | HsModalBoxType name (LHsType name) -- modal types; first argument is the environment classifier
+
| HsTupleTy Boxity
[LHsType name] -- Element types (length gives arity)
ppr_mono_ty _ (HsKindSig ty kind) = parens (ppr_mono_lty pREC_TOP ty <+> dcolon <+> pprKind kind)
ppr_mono_ty _ (HsListTy ty) = brackets (ppr_mono_lty pREC_TOP ty)
ppr_mono_ty _ (HsPArrTy ty) = pabrackets (ppr_mono_lty pREC_TOP ty)
+ppr_mono_ty _ (HsModalBoxType ecn ty) = ppr_modalBoxType (ppr ecn) (ppr_mono_lty pREC_TOP ty)
ppr_mono_ty _ (HsPredTy pred) = ppr pred
ppr_mono_ty _ (HsNumTy n) = integer n -- generics only
ppr_mono_ty _ (HsSpliceTy s _ _) = pprSplice s
--------------------------
pabrackets :: SDoc -> SDoc
pabrackets p = ptext (sLit "[:") <> p <> ptext (sLit ":]")
+
+ppr_modalBoxType :: SDoc -> SDoc -> SDoc
+ppr_modalBoxType ecn p = ptext (sLit "<[") <> p <> ptext (sLit "]>@") <> ecn
+
\end{code}