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-rw-r--r--haddock-api/src/Haddock/Backends/LaTeX.hs5
1 files changed, 5 insertions, 0 deletions
diff --git a/haddock-api/src/Haddock/Backends/LaTeX.hs b/haddock-api/src/Haddock/Backends/LaTeX.hs
index 3b0c38c4..ffb4d782 100644
--- a/haddock-api/src/Haddock/Backends/LaTeX.hs
+++ b/haddock-api/src/Haddock/Backends/LaTeX.hs
@@ -885,6 +885,10 @@ tupleParens HsUnboxedTuple = ubxParenList
tupleParens _ = parenList
+sumParens :: [LaTeX] -> LaTeX
+sumParens = ubxparens . hsep . punctuate (text " | ")
+
+
-------------------------------------------------------------------------------
-- * Rendering of HsType
--
@@ -948,6 +952,7 @@ ppr_mono_ty _ (HsBangTy b ty) u = ppBang b <> ppLParendType u ty
ppr_mono_ty _ (HsTyVar (L _ name)) _ = ppDocName name
ppr_mono_ty ctxt_prec (HsFunTy ty1 ty2) u = ppr_fun_ty ctxt_prec ty1 ty2 u
ppr_mono_ty _ (HsTupleTy con tys) u = tupleParens con (map (ppLType u) tys)
+ppr_mono_ty _ (HsSumTy tys) u = sumParens (map (ppLType u) tys)
ppr_mono_ty _ (HsKindSig ty kind) u = parens (ppr_mono_lty pREC_TOP ty u <+> dcolon u <+> ppLKind u kind)
ppr_mono_ty _ (HsListTy ty) u = brackets (ppr_mono_lty pREC_TOP ty u)
ppr_mono_ty _ (HsPArrTy ty) u = pabrackets (ppr_mono_lty pREC_TOP ty u)