diff options
Diffstat (limited to 'haddock-api/src/Haddock/Backends/Xhtml/Decl.hs')
| -rw-r--r-- | haddock-api/src/Haddock/Backends/Xhtml/Decl.hs | 401 |
1 files changed, 270 insertions, 131 deletions
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs index bf71fec4..fcc52a99 100644 --- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs +++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs @@ -40,10 +40,19 @@ import Name import BooleanFormula import RdrName ( rdrNameOcc ) -ppDecl :: Bool -> LinksInfo -> LHsDecl DocNameI - -> [(HsDecl DocNameI, DocForDecl DocName)] - -> DocForDecl DocName -> [DocInstance DocNameI] -> [(DocName, Fixity)] - -> [(DocName, DocForDecl DocName)] -> Splice -> Unicode -> Qualification -> Html +-- | Pretty print a declaration +ppDecl :: Bool -- ^ print summary info only + -> LinksInfo -- ^ link information + -> LHsDecl DocNameI -- ^ declaration to print + -> [(HsDecl DocNameI, DocForDecl DocName)] -- ^ relevant pattern synonyms + -> DocForDecl DocName -- ^ documentation for this decl + -> [DocInstance DocNameI] -- ^ relevant instances + -> [(DocName, Fixity)] -- ^ relevant fixities + -> [(DocName, DocForDecl DocName)] -- ^ documentation for all decls + -> Splice + -> Unicode -- ^ unicode output + -> Qualification + -> Html ppDecl summ links (L loc decl) pats (mbDoc, fnArgsDoc) instances fixities subdocs splice unicode qual = case decl of TyClD (FamDecl d) -> ppTyFam summ False links instances fixities loc mbDoc d splice unicode qual TyClD d@(DataDecl {}) -> ppDataDecl summ links instances fixities subdocs loc mbDoc d pats splice unicode qual @@ -51,8 +60,8 @@ ppDecl summ links (L loc decl) pats (mbDoc, fnArgsDoc) instances fixities subdoc TyClD d@(ClassDecl {}) -> ppClassDecl summ links instances fixities loc mbDoc subdocs d splice unicode qual SigD (TypeSig lnames lty) -> ppLFunSig summ links loc (mbDoc, fnArgsDoc) lnames (hsSigWcType lty) fixities splice unicode qual - SigD (PatSynSig lnames ty) -> ppLPatSig summ links loc (mbDoc, fnArgsDoc) lnames - ty fixities splice unicode qual + SigD (PatSynSig lnames lty) -> ppLPatSig summ links loc (mbDoc, fnArgsDoc) lnames + (hsSigType lty) fixities splice unicode qual ForD d -> ppFor summ links loc (mbDoc, fnArgsDoc) d fixities splice unicode qual InstD _ -> noHtml DerivD _ -> noHtml @@ -75,20 +84,18 @@ ppFunSig summary links loc doc docnames typ fixities splice unicode qual = where pp_typ = ppLType unicode qual HideEmptyContexts typ -ppLPatSig :: Bool -> LinksInfo -> SrcSpan -> DocForDecl DocName -> - [Located DocName] -> LHsSigType DocNameI -> - [(DocName, Fixity)] -> - Splice -> Unicode -> Qualification -> Html -ppLPatSig summary links loc (doc, _argDocs) docnames typ fixities splice unicode qual - | summary = pref1 - | otherwise = topDeclElem links loc splice (map unLoc docnames) (pref1 <+> ppFixities fixities qual) - +++ docSection Nothing qual doc +-- | Pretty print a pattern synonym +ppLPatSig :: Bool -> LinksInfo -> SrcSpan -> DocForDecl DocName + -> [Located DocName] -- ^ names of patterns in declaration + -> LHsType DocNameI -- ^ type of patterns in declaration + -> [(DocName, Fixity)] + -> Splice -> Unicode -> Qualification -> Html +ppLPatSig summary links loc doc lnames typ fixities splice unicode qual = + ppSigLike summary links loc (keyword "pattern") doc (map unLoc lnames) fixities + (unLoc typ, pp_typ) splice unicode qual (patSigContext typ) where - pref1 = hsep [ keyword "pattern" - , hsep $ punctuate comma $ map (ppBinder summary . getOccName) docnames - , dcolon unicode - , ppPatSigType unicode qual (hsSigType typ) - ] + pp_typ = ppPatSigType unicode qual typ + ppSigLike :: Bool -> LinksInfo -> SrcSpan -> Html -> DocForDecl DocName -> [DocName] -> [(DocName, Fixity)] -> (HsType DocNameI, Html) -> @@ -97,7 +104,7 @@ ppSigLike summary links loc leader doc docnames fixities (typ, pp_typ) splice unicode qual emptyCtxts = ppTypeOrFunSig summary links loc docnames typ doc ( addFixities $ leader <+> ppTypeSig summary occnames pp_typ unicode - , addFixities . concatHtml . punctuate comma $ map (ppBinder False) occnames + , (leader <+>) . addFixities . concatHtml . punctuate comma $ map (ppBinder False) occnames , dcolon unicode ) splice unicode qual emptyCtxts @@ -114,10 +121,26 @@ ppTypeOrFunSig :: Bool -> LinksInfo -> SrcSpan -> [DocName] -> HsType DocNameI ppTypeOrFunSig summary links loc docnames typ (doc, argDocs) (pref1, pref2, sep) splice unicode qual emptyCtxts | summary = pref1 | Map.null argDocs = topDeclElem links loc splice docnames pref1 +++ docSection curName qual doc - | otherwise = topDeclElem links loc splice docnames pref2 +++ - subArguments qual (do_args 0 sep typ) +++ docSection curName qual doc + | otherwise = topDeclElem links loc splice docnames pref2 + +++ subArguments qual (ppSubSigLike unicode qual typ argDocs [] sep emptyCtxts) + +++ docSection curName qual doc where curName = getName <$> listToMaybe docnames + + +-- This splits up a type signature along `->` and adds docs (when they exist) to +-- the arguments. +-- +-- If one passes in a list of the available subdocs, any top-level `HsRecTy` +-- found will be expanded out into their fields. +ppSubSigLike :: Unicode -> Qualification + -> HsType DocNameI -- ^ type signature + -> FnArgsDoc DocName -- ^ docs to add + -> [(DocName, DocForDecl DocName)] -- ^ all subdocs (useful when + -- we expand an `HsRecTy`) + -> Html -> HideEmptyContexts -> [SubDecl] +ppSubSigLike unicode qual typ argDocs subdocs sep emptyCtxts = do_args 0 sep typ + where argDoc n = Map.lookup n argDocs do_largs n leader (L _ t) = do_args n leader t @@ -135,12 +158,32 @@ ppTypeOrFunSig summary links loc docnames typ (doc, argDocs) (pref1, pref2, sep) = (leader <+> ppLContextNoArrow lctxt unicode qual emptyCtxts, Nothing, []) : do_largs n (darrow unicode) ltype + do_args n leader (HsFunTy (L _ (HsRecTy fields)) r) + = [ (ldr <+> html, mdoc, subs) + | (L _ field, ldr) <- zip fields (leader <+> gadtOpen : repeat gadtComma) + , let (html, mdoc, subs) = ppSideBySideField subdocs unicode qual field + ] + ++ do_largs (n+1) (gadtEnd <+> arrow unicode) r + do_args n leader (HsFunTy lt r) = (leader <+> ppLFunLhType unicode qual emptyCtxts lt, argDoc n, []) : do_largs (n+1) (arrow unicode) r + do_args n leader t = [(leader <+> ppType unicode qual emptyCtxts t, argDoc n, [])] + + -- FIXME: this should be done more elegantly + -- + -- We need 'gadtComma' and 'gadtEnd' to line up with the `{` from + -- 'gadtOpen', so we add 3 spaces to cover for `-> `/`:: ` (3 in unicode + -- mode since `->` and `::` are rendered as single characters. + gadtComma = concatHtml (replicate (if unicode then 2 else 3) spaceHtml) <> toHtml "," + gadtEnd = concatHtml (replicate (if unicode then 2 else 3) spaceHtml) <> toHtml "}" + gadtOpen = toHtml "{" + + + ppForAll :: [LHsTyVarBndr DocNameI] -> Unicode -> Qualification -> Html ppForAll tvs unicode qual = case [ppKTv n k | L _ (KindedTyVar (L _ n) k) <- tvs] of @@ -707,11 +750,16 @@ ppShortDataDecl summary dataInst dataDecl pats unicode qual ] -ppDataDecl :: Bool -> LinksInfo -> [DocInstance DocNameI] -> [(DocName, Fixity)] -> - [(DocName, DocForDecl DocName)] -> - SrcSpan -> Documentation DocName -> TyClDecl DocNameI -> - [(HsDecl DocNameI, DocForDecl DocName)] -> - Splice -> Unicode -> Qualification -> Html +-- | Pretty-print a data declaration +ppDataDecl :: Bool -> LinksInfo + -> [DocInstance DocNameI] -- ^ relevant instances + -> [(DocName, Fixity)] -- ^ relevant fixities + -> [(DocName, DocForDecl DocName)] -- ^ all decl documentation + -> SrcSpan + -> Documentation DocName -- ^ this decl's documentation + -> TyClDecl DocNameI -- ^ this decl + -> [(HsDecl DocNameI, DocForDecl DocName)] -- ^ relevant patterns + -> Splice -> Unicode -> Qualification -> Html ppDataDecl summary links instances fixities subdocs loc doc dataDecl pats splice unicode qual @@ -740,25 +788,20 @@ ppDataDecl summary links instances fixities subdocs loc doc dataDecl pats [ ppSideBySideConstr subdocs subfixs unicode qual c | c <- cons , let subfixs = filter (\(n,_) -> any (\cn -> cn == n) - (map unLoc (getConNames (unLoc c)))) fixities + (map unLoc (getConNames (unLoc c)))) fixities ] patternBit = subPatterns qual - [ (hsep [ keyword "pattern" - , hsep $ punctuate comma $ map (ppBinder summary . getOccName) lnames - , dcolon unicode - , ppPatSigType unicode qual (hsSigType typ) - ] <+> ppFixities subfixs qual - ,combineDocumentation (fst d), []) - | (SigD (PatSynSig lnames typ),d) <- pats - , let subfixs = filter (\(n,_) -> any (\cn -> cn == n) (map unLoc lnames)) fixities + [ ppSideBySidePat subfixs unicode qual lnames typ d + | (SigD (PatSynSig lnames typ), d) <- pats + , let subfixs = filter (\(n,_) -> any (\cn -> cn == n) + (map unLoc lnames)) fixities ] instancesBit = ppInstances links (OriginData docname) instances splice unicode qual - ppShortConstr :: Bool -> ConDecl DocNameI -> Unicode -> Qualification -> Html ppShortConstr summary con unicode qual = cHead <+> cBody <+> cFoot where @@ -768,121 +811,180 @@ ppShortConstr summary con unicode qual = cHead <+> cBody <+> cFoot -- returns three pieces: header, body, footer so that header & footer can be -- incorporated into the declaration ppShortConstrParts :: Bool -> Bool -> ConDecl DocNameI -> Unicode -> Qualification -> (Html, Html, Html) -ppShortConstrParts summary dataInst con unicode qual = case con of - ConDeclH98{} -> case con_args con of - PrefixCon args -> - (header_ unicode qual +++ hsep (ppOcc - : map (ppLParendType unicode qual HideEmptyContexts) args), noHtml, noHtml) - RecCon (L _ fields) -> - (header_ unicode qual +++ ppOcc <+> char '{', - doRecordFields fields, - char '}') - InfixCon arg1 arg2 -> - (header_ unicode qual +++ hsep [ppLParendType unicode qual HideEmptyContexts arg1, - ppOccInfix, ppLParendType unicode qual HideEmptyContexts arg2], - noHtml, noHtml) - - ConDeclGADT {} -> (ppOcc <+> dcolon unicode - <+> ppLType unicode qual HideEmptyContexts (getGADTConType con) - , noHtml, noHtml) - - where - doRecordFields fields = shortSubDecls dataInst $ - map (ppShortField summary unicode qual) (map unLoc fields) - - header_ = ppConstrHdr forall_ tyVars context - occ = map (nameOccName . getName . unLoc) $ getConNames con - - ppOcc = case occ of - [one] -> ppBinder summary one - _ -> hsep (punctuate comma (map (ppBinder summary) occ)) +ppShortConstrParts summary dataInst con unicode qual + = case con of + ConDeclH98{ con_args = det + , con_ex_tvs = vars + , con_mb_cxt = cxt + } -> let tyVars = map (getName . hsLTyVarName) vars + context = unLoc (fromMaybe (noLoc []) cxt) + forall_ = False + header_ = ppConstrHdr forall_ tyVars context unicode qual + in case det of + + -- Prefix constructor, e.g. 'Just a' + PrefixCon args -> + ( header_ +++ hsep (ppOcc : map (ppLParendType unicode qual HideEmptyContexts) args) + , noHtml + , noHtml + ) - ppOccInfix = case occ of - [one] -> ppBinderInfix summary one - _ -> hsep (punctuate comma (map (ppBinderInfix summary) occ)) + -- Record constructor, e.g. 'Identity { runIdentity :: a }' + RecCon (L _ fields) -> + ( header_ +++ ppOcc <+> char '{' + , shortSubDecls dataInst [ ppShortField summary unicode qual field + | L _ field <- fields + ] + , char '}' + ) - -- Used for H98 syntax only - tyVars = map (getName . hsLTyVarName) (con_ex_tvs con) - lcontext = fromMaybe (noLoc []) (con_mb_cxt con) - context = unLoc lcontext - forall_ = False + -- Infix constructor, e.g. 'a :| [a]' + InfixCon arg1 arg2 -> + ( header_ +++ hsep [ ppLParendType unicode qual HideEmptyContexts arg1 + , ppOccInfix + , ppLParendType unicode qual HideEmptyContexts arg2 + ] + , noHtml + , noHtml + ) + -- GADT constructor, e.g. 'Foo :: Int -> Foo' + ConDeclGADT {} -> + ( hsep [ ppOcc, dcolon unicode, ppLType unicode qual HideEmptyContexts (getGADTConType con) ] + , noHtml + , noHtml + ) --- ppConstrHdr is for (non-GADT) existentials constructors' syntax -ppConstrHdr :: Bool -> [Name] -> HsContext DocNameI -> Unicode - -> Qualification -> Html -ppConstrHdr forall_ tvs ctxt unicode qual - = (if null tvs then noHtml else ppForall) - +++ - (if null ctxt then noHtml - else ppContextNoArrow ctxt unicode qual HideEmptyContexts - <+> darrow unicode +++ toHtml " ") where - ppForall | forall_ = forallSymbol unicode <+> hsep (map (ppName Prefix) tvs) - <+> toHtml ". " - | otherwise = noHtml + occ = map (nameOccName . getName . unLoc) $ getConNames con + ppOcc = hsep (punctuate comma (map (ppBinder summary) occ)) + ppOccInfix = hsep (punctuate comma (map (ppBinderInfix summary) occ)) + +-- | Pretty print an expanded constructor ppSideBySideConstr :: [(DocName, DocForDecl DocName)] -> [(DocName, Fixity)] - -> Unicode -> Qualification -> LConDecl DocNameI -> SubDecl + -> Unicode -> Qualification + -> LConDecl DocNameI -- ^ constructor declaration to print + -> SubDecl ppSideBySideConstr subdocs fixities unicode qual (L _ con) - = (decl, mbDoc, fieldPart) + = ( decl -- Constructor header (name, fixity) + , mbDoc -- Docs on the whole constructor + , fieldPart -- Information on the fields (or arguments, if they have docs) + ) where - decl = case con of - ConDeclH98{} -> case con_args con of - PrefixCon args -> - hsep ((header_ +++ ppOcc) - : map (ppLParendType unicode qual HideEmptyContexts) args) - <+> fixity + -- Find the name of a constructors in the decl (`getConName` always returns a non-empty list) + aConName = unLoc (head (getConNames con)) - RecCon _ -> header_ +++ ppOcc <+> fixity + fixity = ppFixities fixities qual + occ = map (nameOccName . getName . unLoc) $ getConNames con - InfixCon arg1 arg2 -> - hsep [header_ +++ ppLParendType unicode qual HideEmptyContexts arg1, - ppOccInfix, - ppLParendType unicode qual HideEmptyContexts arg2] - <+> fixity + ppOcc = hsep (punctuate comma (map (ppBinder False) occ)) + ppOccInfix = hsep (punctuate comma (map (ppBinderInfix False) occ)) + + -- Extract out the map of of docs corresponding to the constructors arguments + argDocs = maybe Map.empty snd (lookup aConName subdocs) + hasArgDocs = not $ Map.null argDocs + + decl = case con of + ConDeclH98{ con_args = det + , con_ex_tvs = vars + , con_mb_cxt = cxt + } -> let tyVars = map (getName . hsLTyVarName) vars + context = unLoc (fromMaybe (noLoc []) cxt) + forall_ = False + header_ = ppConstrHdr forall_ tyVars context unicode qual + in case det of + -- Prefix constructor, e.g. 'Just a' + PrefixCon args + | hasArgDocs -> header_ +++ ppOcc <+> fixity + | otherwise -> hsep [ header_ +++ ppOcc + , hsep (map (ppLParendType unicode qual HideEmptyContexts) args) + , fixity + ] + + -- Record constructor, e.g. 'Identity { runIdentity :: a }' + RecCon _ -> header_ +++ ppOcc <+> fixity - ConDeclGADT{} -> doGADTCon (getGADTConType con) + -- Infix constructor, e.g. 'a :| [a]' + InfixCon arg1 arg2 + | hasArgDocs -> header_ +++ ppOcc <+> fixity + | otherwise -> hsep [ header_ +++ ppLParendType unicode qual HideEmptyContexts arg1 + , ppOccInfix + , ppLParendType unicode qual HideEmptyContexts arg2 + , fixity + ] + + -- GADT constructor, e.g. 'Foo :: Int -> Foo' + ConDeclGADT{} + | hasArgDocs || not (null fieldPart) -> ppOcc <+> fixity + | otherwise -> hsep [ ppOcc + , dcolon unicode + -- ++AZ++ make this prepend "{..}" when it is a record style GADT + , ppLType unicode qual HideEmptyContexts (getGADTConType con) + , fixity + ] + + fieldPart = case (con, getConArgs con) of + -- Record style GADTs + (ConDeclGADT{}, RecCon _) -> [ doConstrArgsWithDocs [] ] + + -- Regular record declarations + (_, RecCon (L _ fields)) -> [ doRecordFields fields ] + + -- Any GADT or a regular H98 prefix data constructor + (_, PrefixCon args) | hasArgDocs -> [ doConstrArgsWithDocs args ] + + -- An infix H98 data constructor + (_, InfixCon arg1 arg2) | hasArgDocs -> [ doConstrArgsWithDocs [arg1,arg2] ] - fieldPart = case getConArgs con of - RecCon (L _ fields) -> [doRecordFields fields] _ -> [] doRecordFields fields = subFields qual (map (ppSideBySideField subdocs unicode qual) (map unLoc fields)) - doGADTCon :: Located (HsType DocNameI) -> Html - doGADTCon ty = ppOcc <+> dcolon unicode - -- ++AZ++ make this prepend "{..}" when it is a record style GADT - <+> ppLType unicode qual HideEmptyContexts ty - <+> fixity + doConstrArgsWithDocs args = subFields qual $ case con of + ConDeclH98{} -> + [ (ppLParendType unicode qual HideEmptyContexts arg, mdoc, []) + | (i, arg) <- zip [0..] args + , let mdoc = Map.lookup i argDocs + ] + ConDeclGADT{} -> + ppSubSigLike unicode qual (unLoc (getGADTConType con)) + argDocs subdocs (dcolon unicode) HideEmptyContexts - fixity = ppFixities fixities qual - header_ = ppConstrHdr forall_ tyVars context unicode qual - occ = map (nameOccName . getName . unLoc) $ getConNames con - - ppOcc = case occ of - [one] -> ppBinder False one - _ -> hsep (punctuate comma (map (ppBinder False) occ)) - - ppOccInfix = case occ of - [one] -> ppBinderInfix False one - _ -> hsep (punctuate comma (map (ppBinderInfix False) occ)) - - -- Used for H98 syntax only - tyVars = map (getName . hsLTyVarName) (con_ex_tvs con) - context = unLoc (fromMaybe (noLoc []) (con_mb_cxt con)) - forall_ = False -- don't use "con_doc con", in case it's reconstructed from a .hi file, -- or also because we want Haddock to do the doc-parsing, not GHC. mbDoc = lookup (unLoc $ head $ getConNames con) subdocs >>= combineDocumentation . fst +-- ppConstrHdr is for (non-GADT) existentials constructors' syntax +ppConstrHdr :: Bool -- ^ print explicit foralls + -> [Name] -- ^ type variables + -> HsContext DocNameI -- ^ context + -> Unicode -> Qualification -> Html +ppConstrHdr forall_ tvs ctxt unicode qual = ppForall +++ ppCtxt + where + ppForall + | null tvs || not forall_ = noHtml + | otherwise = forallSymbol unicode + <+> hsep (map (ppName Prefix) tvs) + <+> toHtml ". " + + ppCtxt + | null ctxt = noHtml + | otherwise = ppContextNoArrow ctxt unicode qual HideEmptyContexts + <+> darrow unicode +++ toHtml " " + + +-- | Pretty-print a record field ppSideBySideField :: [(DocName, DocForDecl DocName)] -> Unicode -> Qualification -> ConDeclField DocNameI -> SubDecl ppSideBySideField subdocs unicode qual (ConDeclField names ltype _) = - ( hsep (punctuate comma (map ((ppBinder False) . rdrNameOcc . unLoc . rdrNameFieldOcc . unLoc) names)) + ( hsep (punctuate comma [ ppBinder False (rdrNameOcc field) + | L _ name <- names + , let field = (unLoc . rdrNameFieldOcc) name + ]) <+> dcolon unicode <+> ppLType unicode qual HideEmptyContexts ltype , mbDoc @@ -900,6 +1002,40 @@ ppShortField summary unicode qual (ConDeclField names ltype _) <+> dcolon unicode <+> ppLType unicode qual HideEmptyContexts ltype +-- | Pretty print an expanded pattern (for bundled patterns) +ppSideBySidePat :: [(DocName, Fixity)] -> Unicode -> Qualification + -> [Located DocName] -- ^ pattern name(s) + -> LHsSigType DocNameI -- ^ type of pattern(s) + -> DocForDecl DocName -- ^ doc map + -> SubDecl +ppSideBySidePat fixities unicode qual lnames typ (doc, argDocs) = + ( decl + , combineDocumentation doc + , fieldPart + ) + where + hasArgDocs = not $ Map.null argDocs + fixity = ppFixities fixities qual + ppOcc = hsep (punctuate comma (map (ppBinder False . getOccName) lnames)) + + decl | hasArgDocs = keyword "pattern" <+> ppOcc <+> fixity + | otherwise = hsep [ keyword "pattern" + , ppOcc + , dcolon unicode + , ppPatSigType unicode qual (hsSigType typ) + , fixity + ] + + fieldPart + | not hasArgDocs = [] + | otherwise = [ subFields qual (ppSubSigLike unicode qual (unLoc patTy) + argDocs [] (dcolon unicode) + emptyCtxt) ] + + patTy = hsSigType typ + emptyCtxt = patSigContext patTy + + -- | Print the LHS of a data\/newtype declaration. -- Currently doesn't handle 'data instance' decls or kind signatures ppDataHeader :: Bool -> TyClDecl DocNameI -> Unicode -> Qualification -> Html @@ -990,13 +1126,9 @@ ppLKind unicode qual y = ppKind unicode qual (unLoc y) ppKind :: Unicode -> Qualification -> HsKind DocNameI -> Html ppKind unicode qual ki = ppr_mono_ty pREC_TOP ki unicode qual HideEmptyContexts -ppPatSigType :: Unicode -> Qualification -> LHsType DocNameI -> Html -ppPatSigType unicode qual typ = - let emptyCtxts = - if hasNonEmptyContext typ && isFirstContextEmpty typ - then ShowEmptyToplevelContexts - else HideEmptyContexts - in ppLType unicode qual emptyCtxts typ +patSigContext :: LHsType name -> HideEmptyContexts +patSigContext typ | hasNonEmptyContext typ && isFirstContextEmpty typ = ShowEmptyToplevelContexts + | otherwise = HideEmptyContexts where hasNonEmptyContext :: LHsType name -> Bool hasNonEmptyContext t = @@ -1013,6 +1145,13 @@ ppPatSigType unicode qual typ = HsFunTy _ s -> isFirstContextEmpty s _ -> False + +-- | Pretty-print a pattern signature (all this does over 'ppLType' is slot in +-- the right 'HideEmptyContext' value) +ppPatSigType :: Unicode -> Qualification -> LHsType DocNameI -> Html +ppPatSigType unicode qual typ = + let emptyCtxts = patSigContext typ in ppLType unicode qual emptyCtxts typ + ppForAllPart :: Unicode -> Qualification -> [LHsTyVarBndr DocNameI] -> Html ppForAllPart unicode qual tvs = hsep (forallSymbol unicode : ppTyVars unicode qual tvs) +++ dot |