From 730a2163245cf7aaf389458113e6fa338eca7865 Mon Sep 17 00:00:00 2001 From: Alec Theriault Date: Sat, 28 Mar 2020 12:04:16 -0400 Subject: Use TTG empty extensions to remove some `error`'s None of these error cases should ever have been reachable, so this is just a matter of leveraging the type system to assert this. * Use the `NoExtCon` and `noExtCon` to handle case matches for no extension constructors, instead of throwing an `error`. * Use the extension field of `HsSpliceTy` to ensure that this variant of `HsType` cannot exist in an `HsType DocNameI`. --- haddock-api/src/Haddock/Backends/LaTeX.hs | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'haddock-api/src/Haddock/Backends/LaTeX.hs') diff --git a/haddock-api/src/Haddock/Backends/LaTeX.hs b/haddock-api/src/Haddock/Backends/LaTeX.hs index 63b12a14..d52c136f 100644 --- a/haddock-api/src/Haddock/Backends/LaTeX.hs +++ b/haddock-api/src/Haddock/Backends/LaTeX.hs @@ -39,6 +39,7 @@ import Data.Char import Control.Monad import Data.Maybe import Data.List ( sort ) +import Data.Void ( absurd ) import Prelude hiding ((<>)) import Haddock.Doc (combineDocumentation) @@ -530,7 +531,7 @@ ppTyVars unicode = map (ppHsTyVarBndr unicode . unLoc) tyvarNames :: LHsQTyVars DocNameI -> [Name] -tyvarNames = map (getName . hsLTyVarNameI) . hsQTvExplicit +tyvarNames = map (getName . hsTyVarBndrName . unLoc) . hsQTvExplicit declWithDoc :: LaTeX -> Maybe LaTeX -> LaTeX @@ -1080,7 +1081,7 @@ ppr_mono_ty (HsSumTy _ tys) u = sumParens (map (ppLType u) tys) ppr_mono_ty (HsKindSig _ ty kind) u = ppr_mono_lty ty u <+> dcolon u <+> ppLKind u kind ppr_mono_ty (HsListTy _ ty) u = brackets (ppr_mono_lty ty u) ppr_mono_ty (HsIParamTy _ (L _ n) ty) u = ppIPName n <+> dcolon u <+> ppr_mono_lty ty u -ppr_mono_ty (HsSpliceTy {}) _ = error "ppr_mono_ty HsSpliceTy" +ppr_mono_ty (HsSpliceTy v _) _ = absurd v ppr_mono_ty (HsRecTy {}) _ = text "{..}" ppr_mono_ty (XHsType (NHsCoreTy {})) _ = error "ppr_mono_ty HsCoreTy" ppr_mono_ty (HsExplicitListTy _ IsPromoted tys) u = Pretty.quote $ brackets $ hsep $ punctuate comma $ map (ppLType u) tys -- cgit v1.2.3