diff options
Diffstat (limited to 'haddock-api/src/Haddock/Backends/Xhtml/Decl.hs')
| -rw-r--r-- | haddock-api/src/Haddock/Backends/Xhtml/Decl.hs | 341 |
1 files changed, 193 insertions, 148 deletions
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs index 2d9d7392..59ad41e4 100644 --- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs +++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs @@ -41,11 +41,12 @@ import BooleanFormula import RdrName ( rdrNameOcc ) ppDecl :: Bool -> LinksInfo -> LHsDecl DocNameI - -> DocForDecl DocName -> [DocInstance DocNameI] -> [(DocName, Fixity)] + -> [(HsDecl DocNameI, DocForDecl DocName)] + -> DocForDecl DocName -> [DocInstance DocNameI] -> [(DocName, Fixity)] -> [(DocName, DocForDecl DocName)] -> Splice -> Unicode -> Qualification -> Html -ppDecl summ links (L loc decl) (mbDoc, fnArgsDoc) instances fixities subdocs splice unicode qual = case decl of +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 splice unicode qual + TyClD d@(DataDecl {}) -> ppDataDecl summ links instances fixities subdocs loc mbDoc d pats splice unicode qual TyClD d@(SynDecl {}) -> ppTySyn summ links fixities loc (mbDoc, fnArgsDoc) d splice unicode qual 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 @@ -70,9 +71,9 @@ ppFunSig :: Bool -> LinksInfo -> SrcSpan -> DocForDecl DocName -> Splice -> Unicode -> Qualification -> Html ppFunSig summary links loc doc docnames typ fixities splice unicode qual = ppSigLike summary links loc mempty doc docnames fixities (unLoc typ, pp_typ) - splice unicode qual + splice unicode qual HideEmptyContexts where - pp_typ = ppLType unicode qual typ + pp_typ = ppLType unicode qual HideEmptyContexts typ ppLPatSig :: Bool -> LinksInfo -> SrcSpan -> DocForDecl DocName -> [Located DocName] -> LHsSigType DocNameI -> @@ -86,20 +87,20 @@ ppLPatSig summary links loc (doc, _argDocs) docnames typ fixities splice unicode pref1 = hsep [ keyword "pattern" , hsep $ punctuate comma $ map (ppBinder summary . getOccName) docnames , dcolon unicode - , ppLType unicode qual (hsSigType typ) + , ppPatSigType unicode qual (hsSigType typ) ] ppSigLike :: Bool -> LinksInfo -> SrcSpan -> Html -> DocForDecl DocName -> [DocName] -> [(DocName, Fixity)] -> (HsType DocNameI, Html) -> - Splice -> Unicode -> Qualification -> Html + Splice -> Unicode -> Qualification -> HideEmptyContexts -> Html ppSigLike summary links loc leader doc docnames fixities (typ, pp_typ) - splice unicode qual = + 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 , dcolon unicode ) - splice unicode qual + splice unicode qual emptyCtxts where occnames = map (nameOccName . getName) docnames addFixities html @@ -109,8 +110,8 @@ ppSigLike summary links loc leader doc docnames fixities (typ, pp_typ) ppTypeOrFunSig :: Bool -> LinksInfo -> SrcSpan -> [DocName] -> HsType DocNameI -> DocForDecl DocName -> (Html, Html, Html) - -> Splice -> Unicode -> Qualification -> Html -ppTypeOrFunSig summary links loc docnames typ (doc, argDocs) (pref1, pref2, sep) splice unicode qual + -> Splice -> Unicode -> Qualification -> HideEmptyContexts -> Html +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 +++ @@ -131,14 +132,14 @@ ppTypeOrFunSig summary links loc docnames typ (doc, argDocs) (pref1, pref2, sep) | null (unLoc lctxt) = do_largs n leader ltype | otherwise - = (leader <+> ppLContextNoArrow lctxt unicode qual, Nothing, []) + = (leader <+> ppLContextNoArrow lctxt unicode qual emptyCtxts, Nothing, []) : do_largs n (darrow unicode) ltype do_args n leader (HsFunTy lt r) - = (leader <+> ppLFunLhType unicode qual lt, argDoc n, []) + = (leader <+> ppLFunLhType unicode qual emptyCtxts lt, argDoc n, []) : do_largs (n+1) (arrow unicode) r do_args n leader t - = [(leader <+> ppType unicode qual t, argDoc n, [])] + = [(leader <+> ppType unicode qual emptyCtxts t, argDoc n, [])] ppForAll :: [LHsTyVarBndr DocNameI] -> Unicode -> Qualification -> Html ppForAll tvs unicode qual = @@ -171,8 +172,8 @@ ppFixities fs qual = foldr1 (+++) (map ppFix uniq_fs) +++ rightEdge -- | Pretty-print type variables. -ppTyVars :: [LHsTyVarBndr DocNameI] -> [Html] -ppTyVars tvs = map (ppTyName . getName . hsLTyVarName) tvs +ppTyVars :: Unicode -> Qualification -> [LHsTyVarBndr DocNameI] -> [Html] +ppTyVars unicode qual tvs = map (ppHsTyVarBndr unicode qual . unLoc) tvs tyvarNames :: LHsQTyVars DocNameI -> [Name] tyvarNames = map (getName . hsLTyVarName) . hsQTvExplicit @@ -196,11 +197,11 @@ ppTySyn summary links fixities loc doc (SynDecl { tcdLName = L _ name, tcdTyVars splice unicode qual = ppTypeOrFunSig summary links loc [name] (unLoc ltype) doc (full <+> fixs, hdr <+> fixs, spaceHtml +++ equals) - splice unicode qual + splice unicode qual ShowEmptyToplevelContexts where hdr = hsep ([keyword "type", ppBinder summary occ] - ++ ppTyVars (hsQTvExplicit ltyvars)) - full = hdr <+> equals <+> ppLType unicode qual ltype + ++ ppTyVars unicode qual (hsQTvExplicit ltyvars)) + full = hdr <+> equals <+> ppPatSigType unicode qual ltype occ = nameOccName . getName $ name fixs | summary = noHtml @@ -219,14 +220,14 @@ ppTyName :: Name -> Html ppTyName = ppName Prefix -ppSimpleSig :: LinksInfo -> Splice -> Unicode -> Qualification -> SrcSpan +ppSimpleSig :: LinksInfo -> Splice -> Unicode -> Qualification -> HideEmptyContexts -> SrcSpan -> [DocName] -> HsType DocNameI -> Html -ppSimpleSig links splice unicode qual loc names typ = +ppSimpleSig links splice unicode qual emptyCtxts loc names typ = topDeclElem' names $ ppTypeSig True occNames ppTyp unicode where topDeclElem' = topDeclElem links loc splice - ppTyp = ppType unicode qual typ + ppTyp = ppType unicode qual emptyCtxts typ occNames = map getOccName names @@ -320,7 +321,7 @@ ppTyFam summary associated links instances fixities loc doc decl splice unicode ppTyFamEqn TyFamEqn { tfe_tycon = n, tfe_rhs = rhs , tfe_pats = HsIB { hsib_body = ts }} = ( ppAppNameTypes (unLoc n) [] (map unLoc ts) unicode qual - <+> equals <+> ppType unicode qual (unLoc rhs) + <+> equals <+> ppType unicode qual HideEmptyContexts (unLoc rhs) , Nothing, [] ) @@ -353,20 +354,20 @@ ppAssocType summ links doc (L loc decl) fixities splice unicode qual = -- | Print a type family and its variables ppFamDeclBinderWithVars :: Bool -> Unicode -> Qualification -> FamilyDecl DocNameI -> Html ppFamDeclBinderWithVars summ unicode qual (FamilyDecl { fdLName = lname, fdTyVars = tvs }) = - ppAppDocNameTyVarBndrs summ unicode qual (unLoc lname) (map unLoc $ hsq_explicit tvs) + ppAppDocNameTyVarBndrs summ unicode qual (unLoc lname) (hsq_explicit tvs) -- | Print a newtype / data binder and its variables -ppDataBinderWithVars :: Bool -> TyClDecl DocNameI -> Html -ppDataBinderWithVars summ decl = - ppAppDocNameNames summ (tcdName decl) (tyvarNames $ tcdTyVars decl) +ppDataBinderWithVars :: Bool -> Unicode -> Qualification -> TyClDecl DocNameI -> Html +ppDataBinderWithVars summ unicode qual decl = + ppAppDocNameTyVarBndrs summ unicode qual (tcdName decl) (hsQTvExplicit $ tcdTyVars decl) -------------------------------------------------------------------------------- -- * Type applications -------------------------------------------------------------------------------- -ppAppDocNameTyVarBndrs :: Bool -> Unicode -> Qualification -> DocName -> [HsTyVarBndr DocNameI] -> Html +ppAppDocNameTyVarBndrs :: Bool -> Unicode -> Qualification -> DocName -> [LHsTyVarBndr DocNameI] -> Html ppAppDocNameTyVarBndrs summ unicode qual n vs = - ppTypeApp n [] vs ppDN (ppHsTyVarBndr unicode qual) + ppTypeApp n [] vs ppDN (ppHsTyVarBndr unicode qual . unLoc) where ppDN notation = ppBinderFixity notation summ . nameOccName . getName ppBinderFixity Infix = ppBinderInfix @@ -376,18 +377,9 @@ ppAppDocNameTyVarBndrs summ unicode qual n vs = ppAppNameTypes :: DocName -> [HsType DocNameI] -> [HsType DocNameI] -> Unicode -> Qualification -> Html ppAppNameTypes n ks ts unicode qual = - ppTypeApp n ks ts (\p -> ppDocName qual p True) (ppParendType unicode qual) + ppTypeApp n ks ts (\p -> ppDocName qual p True) (ppParendType unicode qual HideEmptyContexts) --- | Print an application of a 'DocName' and a list of 'Names' -ppAppDocNameNames :: Bool -> DocName -> [Name] -> Html -ppAppDocNameNames summ n ns = - ppTypeApp n [] ns ppDN ppTyName - where - ppDN notation = ppBinderFixity notation summ . nameOccName . getName - ppBinderFixity Infix = ppBinderInfix - ppBinderFixity _ = ppBinder - -- | General printing of type applications ppTypeApp :: DocName -> [a] -> [a] -> (Notation -> DocName -> Html) -> (a -> Html) -> Html ppTypeApp n [] (t1:t2:rest) ppDN ppT @@ -406,32 +398,35 @@ ppTypeApp n ks ts ppDN ppT = ppDN Prefix n <+> hsep (map ppT $ ks ++ ts) ppLContext, ppLContextNoArrow :: Located (HsContext DocNameI) -> Unicode - -> Qualification -> Html + -> Qualification -> HideEmptyContexts -> Html ppLContext = ppContext . unLoc ppLContextNoArrow = ppContextNoArrow . unLoc -ppContextNoArrow :: HsContext DocNameI -> Unicode -> Qualification -> Html -ppContextNoArrow cxt unicode qual = fromMaybe noHtml $ - ppContextNoLocsMaybe (map unLoc cxt) unicode qual +ppContextNoArrow :: HsContext DocNameI -> Unicode -> Qualification -> HideEmptyContexts -> Html +ppContextNoArrow cxt unicode qual emptyCtxts = fromMaybe noHtml $ + ppContextNoLocsMaybe (map unLoc cxt) unicode qual emptyCtxts -ppContextNoLocs :: [HsType DocNameI] -> Unicode -> Qualification -> Html -ppContextNoLocs cxt unicode qual = maybe noHtml (<+> darrow unicode) $ - ppContextNoLocsMaybe cxt unicode qual +ppContextNoLocs :: [HsType DocNameI] -> Unicode -> Qualification -> HideEmptyContexts -> Html +ppContextNoLocs cxt unicode qual emptyCtxts = maybe noHtml (<+> darrow unicode) $ + ppContextNoLocsMaybe cxt unicode qual emptyCtxts -ppContextNoLocsMaybe :: [HsType DocNameI] -> Unicode -> Qualification -> Maybe Html -ppContextNoLocsMaybe [] _ _ = Nothing -ppContextNoLocsMaybe cxt unicode qual = Just $ ppHsContext cxt unicode qual +ppContextNoLocsMaybe :: [HsType DocNameI] -> Unicode -> Qualification -> HideEmptyContexts -> Maybe Html +ppContextNoLocsMaybe [] _ _ emptyCtxts = + case emptyCtxts of + HideEmptyContexts -> Nothing + ShowEmptyToplevelContexts -> Just (toHtml "()") +ppContextNoLocsMaybe cxt unicode qual _ = Just $ ppHsContext cxt unicode qual -ppContext :: HsContext DocNameI -> Unicode -> Qualification -> Html -ppContext cxt unicode qual = ppContextNoLocs (map unLoc cxt) unicode qual +ppContext :: HsContext DocNameI -> Unicode -> Qualification -> HideEmptyContexts -> Html +ppContext cxt unicode qual emptyCtxts = ppContextNoLocs (map unLoc cxt) unicode qual emptyCtxts -ppHsContext :: [HsType DocNameI] -> Unicode -> Qualification-> Html -ppHsContext [] _ _ = noHtml +ppHsContext :: [HsType DocNameI] -> Unicode -> Qualification -> Html +ppHsContext [] _ _ = noHtml ppHsContext [p] unicode qual = ppCtxType unicode qual p -ppHsContext cxt unicode qual = parenList (map (ppType unicode qual) cxt) +ppHsContext cxt unicode qual = parenList (map (ppType unicode qual HideEmptyContexts) cxt) ------------------------------------------------------------------------------- @@ -444,8 +439,8 @@ ppClassHdr :: Bool -> Located [LHsType DocNameI] -> DocName -> Unicode -> Qualification -> Html ppClassHdr summ lctxt n tvs fds unicode qual = keyword "class" - <+> (if not . null . unLoc $ lctxt then ppLContext lctxt unicode qual else noHtml) - <+> ppAppDocNameNames summ n (tyvarNames tvs) + <+> (if not . null . unLoc $ lctxt then ppLContext lctxt unicode qual HideEmptyContexts else noHtml) + <+> ppAppDocNameTyVarBndrs summ unicode qual n (hsQTvExplicit tvs) <+> ppFds fds unicode qual @@ -529,9 +524,8 @@ ppClassDecl summary links instances fixities loc d subdocs , f@(n',_) <- fixities , n == n' ] names = map unLoc lnames ] - -- FIXME: is taking just the first name ok? Is it possible that - -- there are different subdocs for different names in a single - -- type signature? + -- N.B. taking just the first name is ok. Signatures with multiple names + -- are expanded so that each name gets its own signature. minimalBit = case [ s | MinimalSig _ (L _ s) <- sigs ] of -- Miminal complete definition = every shown method @@ -601,7 +595,7 @@ ppInstHead :: LinksInfo -> Splice -> Unicode -> Qualification ppInstHead links splice unicode qual mdoc origin orphan no ihd@(InstHead {..}) = case ihdInstType of ClassInst { .. } -> - ( subInstHead iid $ ppContextNoLocs clsiCtx unicode qual <+> typ + ( subInstHead iid $ ppContextNoLocs clsiCtx unicode qual HideEmptyContexts <+> typ , mdoc , [subInstDetails iid ats sigs] ) @@ -616,14 +610,14 @@ ppInstHead links splice unicode qual mdoc origin orphan no ihd@(InstHead {..}) = where ptype = keyword "type" <+> typ prhs = ptype <+> maybe noHtml - (\t -> equals <+> ppType unicode qual t) rhs + (\t -> equals <+> ppType unicode qual HideEmptyContexts t) rhs DataInst dd -> ( subInstHead iid pdata , mdoc , [subFamInstDetails iid pdecl]) where pdata = keyword "data" <+> typ - pdecl = pdata <+> ppShortDataDecl False True dd unicode qual + pdecl = pdata <+> ppShortDataDecl False True dd [] unicode qual where iid = instanceId origin no orphan ihd typ = ppAppNameTypes ihdClsName ihdKinds ihdTypes unicode qual @@ -644,8 +638,10 @@ ppInstanceSigs :: LinksInfo -> Splice -> Unicode -> Qualification ppInstanceSigs links splice unicode qual sigs = do TypeSig lnames typ <- sigs let names = map unLoc lnames - L loc rtyp = hsSigWcType typ - return $ ppSimpleSig links splice unicode qual loc names rtyp + L _ rtyp = hsSigWcType typ + -- Instance methods signatures are synified and thus don't have a useful + -- SrcSpan value. Use the methods name location instead. + return $ ppSimpleSig links splice unicode qual HideEmptyContexts (getLoc $ head $ lnames) names rtyp lookupAnySubdoc :: Eq id1 => id1 -> [(id1, DocForDecl id2)] -> DocForDecl id2 @@ -672,20 +668,23 @@ instanceId origin no orphan ihd = concat $ -- TODO: print contexts -ppShortDataDecl :: Bool -> Bool -> TyClDecl DocNameI -> Unicode -> Qualification -> Html -ppShortDataDecl summary dataInst dataDecl unicode qual +ppShortDataDecl :: Bool -> Bool -> TyClDecl DocNameI + -> [(HsDecl DocNameI, DocForDecl DocName)] + -> Unicode -> Qualification -> Html +ppShortDataDecl summary dataInst dataDecl pats unicode qual - | [] <- cons = dataHeader + | [] <- cons + , [] <- pats = dataHeader - | [lcon] <- cons, isH98, + | [lcon] <- cons, [] <- pats, isH98, (cHead,cBody,cFoot) <- ppShortConstrParts summary dataInst (unLoc lcon) unicode qual = (dataHeader <+> equals <+> cHead) +++ cBody +++ cFoot - | isH98 = dataHeader - +++ shortSubDecls dataInst (zipWith doConstr ('=':repeat '|') cons) + | [] <- pats, isH98 = dataHeader + +++ shortSubDecls dataInst (zipWith doConstr ('=':repeat '|') cons ++ pats1) | otherwise = (dataHeader <+> keyword "where") - +++ shortSubDecls dataInst (map doGADTConstr cons) + +++ shortSubDecls dataInst (map doGADTConstr cons ++ pats1) where dataHeader @@ -699,16 +698,25 @@ ppShortDataDecl summary dataInst dataDecl unicode qual ConDeclH98 {} -> True ConDeclGADT{} -> False + pats1 = [ hsep [ keyword "pattern" + , hsep $ punctuate comma $ map (ppBinder summary . getOccName) lnames + , dcolon unicode + , ppPatSigType unicode qual (hsSigType typ) + ] + | (SigD (PatSynSig lnames typ),_) <- pats + ] + ppDataDecl :: Bool -> LinksInfo -> [DocInstance DocNameI] -> [(DocName, Fixity)] -> [(DocName, DocForDecl DocName)] -> SrcSpan -> Documentation DocName -> TyClDecl DocNameI -> + [(HsDecl DocNameI, DocForDecl DocName)] -> Splice -> Unicode -> Qualification -> Html -ppDataDecl summary links instances fixities subdocs loc doc dataDecl +ppDataDecl summary links instances fixities subdocs loc doc dataDecl pats splice unicode qual - | summary = ppShortDataDecl summary False dataDecl unicode qual - | otherwise = header_ +++ docSection Nothing qual doc +++ constrBit +++ instancesBit + | summary = ppShortDataDecl summary False dataDecl pats unicode qual + | otherwise = header_ +++ docSection Nothing qual doc +++ constrBit +++ patternBit +++ instancesBit where docname = tcdName dataDecl @@ -723,7 +731,9 @@ ppDataDecl summary links instances fixities subdocs loc doc dataDecl fix = ppFixities (filter (\(n,_) -> n == docname) fixities) qual whereBit - | null cons = noHtml + | null cons + , null pats = noHtml + | null cons = keyword "where" | otherwise = if isH98 then noHtml else keyword "where" constrBit = subConstructors qual @@ -733,6 +743,17 @@ ppDataDecl summary links instances fixities subdocs loc doc dataDecl (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 + ] + instancesBit = ppInstances links (OriginData docname) instances splice unicode qual @@ -751,17 +772,17 @@ ppShortConstrParts summary dataInst con unicode qual = case con of ConDeclH98{} -> case con_details con of PrefixCon args -> (header_ unicode qual +++ hsep (ppOcc - : map (ppLParendType unicode qual) args), noHtml, noHtml) + : 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 arg1, - ppOccInfix, ppLParendType unicode qual 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 resTy,noHtml,noHtml) + ConDeclGADT {} -> (ppOcc <+> dcolon unicode <+> ppLType unicode qual HideEmptyContexts resTy,noHtml,noHtml) where resTy = hsib_body (con_type con) @@ -793,7 +814,7 @@ ppConstrHdr forall_ tvs ctxt unicode qual = (if null tvs then noHtml else ppForall) +++ (if null ctxt then noHtml - else ppContextNoArrow ctxt unicode qual + else ppContextNoArrow ctxt unicode qual HideEmptyContexts <+> darrow unicode +++ toHtml " ") where ppForall | forall_ = forallSymbol unicode <+> hsep (map (ppName Prefix) tvs) @@ -809,15 +830,15 @@ ppSideBySideConstr subdocs fixities unicode qual (L _ con) ConDeclH98{} -> case con_details con of PrefixCon args -> hsep ((header_ +++ ppOcc) - : map (ppLParendType unicode qual) args) + : map (ppLParendType unicode qual HideEmptyContexts) args) <+> fixity RecCon _ -> header_ +++ ppOcc <+> fixity InfixCon arg1 arg2 -> - hsep [header_ +++ ppLParendType unicode qual arg1, + hsep [header_ +++ ppLParendType unicode qual HideEmptyContexts arg1, ppOccInfix, - ppLParendType unicode qual arg2] + ppLParendType unicode qual HideEmptyContexts arg2] <+> fixity ConDeclGADT{} -> doGADTCon resTy @@ -834,7 +855,7 @@ ppSideBySideConstr subdocs fixities unicode qual (L _ con) doGADTCon :: Located (HsType DocNameI) -> Html doGADTCon ty = ppOcc <+> dcolon unicode -- ++AZ++ make this prepend "{..}" when it is a record style GADT - <+> ppLType unicode qual ty + <+> ppLType unicode qual HideEmptyContexts ty <+> fixity fixity = ppFixities fixities qual @@ -861,9 +882,12 @@ ppSideBySideConstr subdocs fixities unicode qual (L _ con) 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)) <+> dcolon unicode <+> ppLType unicode qual ltype, - mbDoc, - []) + ( hsep (punctuate comma (map ((ppBinder False) . rdrNameOcc . unLoc . rdrNameFieldOcc . unLoc) names)) + <+> dcolon unicode + <+> ppLType unicode qual HideEmptyContexts ltype + , mbDoc + , [] + ) where -- don't use cd_fld_doc for same reason we don't use con_doc above -- Where there is more than one name, they all have the same documentation @@ -873,7 +897,7 @@ ppSideBySideField subdocs unicode qual (ConDeclField names ltype _) = ppShortField :: Bool -> Unicode -> Qualification -> ConDeclField DocNameI -> Html ppShortField summary unicode qual (ConDeclField names ltype _) = hsep (punctuate comma (map ((ppBinder summary) . rdrNameOcc . unLoc . rdrNameFieldOcc . unLoc) names)) - <+> dcolon unicode <+> ppLType unicode qual ltype + <+> dcolon unicode <+> ppLType unicode qual HideEmptyContexts ltype -- | Print the LHS of a data\/newtype declaration. @@ -888,9 +912,9 @@ ppDataHeader summary decl@(DataDecl { tcdDataDefn = (case nd of { NewType -> keyword "newtype"; DataType -> keyword "data" }) <+> -- context - ppLContext ctxt unicode qual <+> + ppLContext ctxt unicode qual HideEmptyContexts <+> -- T a b c ..., or a :+: b - ppDataBinderWithVars summary decl + ppDataBinderWithVars summary unicode qual decl <+> case ks of Nothing -> mempty Just (L _ x) -> dcolon unicode <+> ppKind unicode qual x @@ -940,19 +964,18 @@ maybeParen ctxt_prec op_prec p | ctxt_prec >= op_prec = parens p | otherwise = p -ppLType, ppLParendType, ppLFunLhType :: Unicode -> Qualification - -> Located (HsType DocNameI) -> Html -ppLType unicode qual y = ppType unicode qual (unLoc y) -ppLParendType unicode qual y = ppParendType unicode qual (unLoc y) -ppLFunLhType unicode qual y = ppFunLhType unicode qual (unLoc y) +ppLType, ppLParendType, ppLFunLhType :: Unicode -> Qualification -> HideEmptyContexts -> Located (HsType DocNameI) -> Html +ppLType unicode qual emptyCtxts y = ppType unicode qual emptyCtxts (unLoc y) +ppLParendType unicode qual emptyCtxts y = ppParendType unicode qual emptyCtxts (unLoc y) +ppLFunLhType unicode qual emptyCtxts y = ppFunLhType unicode qual emptyCtxts (unLoc y) +ppCtxType :: Unicode -> Qualification -> HsType DocNameI -> Html +ppCtxType unicode qual ty = ppr_mono_ty pREC_CTX ty unicode qual HideEmptyContexts -ppType, ppCtxType, ppParendType, ppFunLhType :: Unicode -> Qualification - -> HsType DocNameI -> Html -ppType unicode qual ty = ppr_mono_ty pREC_TOP ty unicode qual -ppCtxType unicode qual ty = ppr_mono_ty pREC_CTX ty unicode qual -ppParendType unicode qual ty = ppr_mono_ty pREC_CON ty unicode qual -ppFunLhType unicode qual ty = ppr_mono_ty pREC_FUN ty unicode qual +ppType, ppParendType, ppFunLhType :: Unicode -> Qualification -> HideEmptyContexts -> HsType DocNameI -> Html +ppType unicode qual emptyCtxts ty = ppr_mono_ty pREC_TOP ty unicode qual emptyCtxts +ppParendType unicode qual emptyCtxts ty = ppr_mono_ty pREC_CON ty unicode qual emptyCtxts +ppFunLhType unicode qual emptyCtxts ty = ppr_mono_ty pREC_FUN ty unicode qual emptyCtxts ppHsTyVarBndr :: Unicode -> Qualification -> HsTyVarBndr DocNameI -> Html ppHsTyVarBndr _ qual (UserTyVar (L _ name)) = @@ -965,62 +988,85 @@ ppLKind :: Unicode -> Qualification -> LHsKind DocNameI -> Html 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 - -ppForAllPart :: [LHsTyVarBndr DocNameI] -> Unicode -> Html -ppForAllPart tvs unicode = hsep (forallSymbol unicode : ppTyVars tvs) +++ dot - -ppr_mono_lty :: Int -> LHsType DocNameI -> Unicode -> Qualification -> 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 + where + hasNonEmptyContext :: LHsType name -> Bool + hasNonEmptyContext t = + case unLoc t of + HsForAllTy _ s -> hasNonEmptyContext s + HsQualTy cxt s -> if null (unLoc cxt) then hasNonEmptyContext s else True + HsFunTy _ s -> hasNonEmptyContext s + _ -> False + isFirstContextEmpty :: LHsType name -> Bool + isFirstContextEmpty t = + case unLoc t of + HsForAllTy _ s -> isFirstContextEmpty s + HsQualTy cxt _ -> null (unLoc cxt) + HsFunTy _ s -> isFirstContextEmpty s + _ -> False + +ppForAllPart :: Unicode -> Qualification -> [LHsTyVarBndr DocNameI] -> Html +ppForAllPart unicode qual tvs = hsep (forallSymbol unicode : ppTyVars unicode qual tvs) +++ dot + +ppr_mono_lty :: Int -> LHsType DocNameI -> Unicode -> Qualification -> HideEmptyContexts -> Html ppr_mono_lty ctxt_prec ty = ppr_mono_ty ctxt_prec (unLoc ty) -ppr_mono_ty :: Int -> HsType DocNameI -> Unicode -> Qualification -> Html -ppr_mono_ty ctxt_prec (HsForAllTy tvs ty) unicode qual +ppr_mono_ty :: Int -> HsType DocNameI -> Unicode -> Qualification -> HideEmptyContexts -> Html +ppr_mono_ty ctxt_prec (HsForAllTy tvs ty) unicode qual emptyCtxts = maybeParen ctxt_prec pREC_FUN $ - ppForAllPart tvs unicode <+> ppr_mono_lty pREC_TOP ty unicode qual + ppForAllPart unicode qual tvs <+> ppr_mono_lty pREC_TOP ty unicode qual emptyCtxts -ppr_mono_ty ctxt_prec (HsQualTy ctxt ty) unicode qual +ppr_mono_ty ctxt_prec (HsQualTy ctxt ty) unicode qual emptyCtxts = maybeParen ctxt_prec pREC_FUN $ - ppLContext ctxt unicode qual <+> ppr_mono_lty pREC_TOP ty unicode qual + ppLContext ctxt unicode qual emptyCtxts <+> ppr_mono_lty pREC_TOP ty unicode qual emptyCtxts -- UnicodeSyntax alternatives -ppr_mono_ty _ (HsTyVar _ (L _ name)) True _ +ppr_mono_ty _ (HsTyVar _ (L _ name)) True _ _ | getOccString (getName name) == "*" = toHtml "★" | getOccString (getName name) == "(->)" = toHtml "(→)" -ppr_mono_ty _ (HsBangTy b ty) u q = ppBang b +++ ppLParendType u q ty -ppr_mono_ty _ (HsTyVar _ (L _ name)) _ q = ppDocName q Prefix True name -ppr_mono_ty ctxt_prec (HsFunTy ty1 ty2) u q = ppr_fun_ty ctxt_prec ty1 ty2 u q -ppr_mono_ty _ (HsTupleTy con tys) u q = tupleParens con (map (ppLType u q) tys) -ppr_mono_ty _ (HsSumTy tys) u q = sumParens (map (ppLType u q) tys) -ppr_mono_ty _ (HsKindSig ty kind) u q = - parens (ppr_mono_lty pREC_TOP ty u q <+> dcolon u <+> ppLKind u q kind) -ppr_mono_ty _ (HsListTy ty) u q = brackets (ppr_mono_lty pREC_TOP ty u q) -ppr_mono_ty _ (HsPArrTy ty) u q = pabrackets (ppr_mono_lty pREC_TOP ty u q) -ppr_mono_ty ctxt_prec (HsIParamTy (L _ n) ty) u q = - maybeParen ctxt_prec pREC_CTX $ ppIPName n <+> dcolon u <+> ppr_mono_lty pREC_TOP ty u q -ppr_mono_ty _ (HsSpliceTy {}) _ _ = error "ppr_mono_ty HsSpliceTy" -ppr_mono_ty _ (HsRecTy {}) _ _ = toHtml "{..}" +ppr_mono_ty _ (HsBangTy b ty) u q _ = ppBang b +++ ppLParendType u q HideEmptyContexts ty +ppr_mono_ty _ (HsTyVar _ (L _ name)) _ q _ = ppDocName q Prefix True name +ppr_mono_ty ctxt_prec (HsFunTy ty1 ty2) u q e = ppr_fun_ty ctxt_prec ty1 ty2 u q e +ppr_mono_ty _ (HsTupleTy con tys) u q _ = tupleParens con (map (ppLType u q HideEmptyContexts) tys) +ppr_mono_ty _ (HsSumTy tys) u q _ = sumParens (map (ppLType u q HideEmptyContexts) tys) +ppr_mono_ty _ (HsKindSig ty kind) u q e = + parens (ppr_mono_lty pREC_TOP ty u q e <+> dcolon u <+> ppLKind u q kind) +ppr_mono_ty _ (HsListTy ty) u q _ = brackets (ppr_mono_lty pREC_TOP ty u q HideEmptyContexts) +ppr_mono_ty _ (HsPArrTy ty) u q _ = pabrackets (ppr_mono_lty pREC_TOP ty u q HideEmptyContexts) +ppr_mono_ty ctxt_prec (HsIParamTy (L _ n) ty) u q _ = + maybeParen ctxt_prec pREC_CTX $ ppIPName n <+> dcolon u <+> ppr_mono_lty pREC_TOP ty u q HideEmptyContexts +ppr_mono_ty _ (HsSpliceTy {}) _ _ _ = error "ppr_mono_ty HsSpliceTy" +ppr_mono_ty _ (HsRecTy {}) _ _ _ = toHtml "{..}" -- Can now legally occur in ConDeclGADT, the output here is to provide a -- placeholder in the signature, which is followed by the field -- declarations. -ppr_mono_ty _ (HsCoreTy {}) _ _ = error "ppr_mono_ty HsCoreTy" -ppr_mono_ty _ (HsExplicitListTy Promoted _ tys) u q = promoQuote $ brackets $ hsep $ punctuate comma $ map (ppLType u q) tys -ppr_mono_ty _ (HsExplicitListTy NotPromoted _ tys) u q = brackets $ hsep $ punctuate comma $ map (ppLType u q) tys -ppr_mono_ty _ (HsExplicitTupleTy _ tys) u q = promoQuote $ parenList $ map (ppLType u q) tys -ppr_mono_ty _ (HsAppsTy {}) _ _ = error "ppr_mono_ty HsAppsTy" +ppr_mono_ty _ (HsCoreTy {}) _ _ _ = error "ppr_mono_ty HsCoreTy" +ppr_mono_ty _ (HsExplicitListTy Promoted _ tys) u q _ = promoQuote $ brackets $ hsep $ punctuate comma $ map (ppLType u q HideEmptyContexts) tys +ppr_mono_ty _ (HsExplicitListTy NotPromoted _ tys) u q _ = brackets $ hsep $ punctuate comma $ map (ppLType u q HideEmptyContexts) tys +ppr_mono_ty _ (HsExplicitTupleTy _ tys) u q _ = promoQuote $ parenList $ map (ppLType u q HideEmptyContexts) tys +ppr_mono_ty _ (HsAppsTy {}) _ _ _ = error "ppr_mono_ty HsAppsTy" -ppr_mono_ty ctxt_prec (HsEqTy ty1 ty2) unicode qual +ppr_mono_ty ctxt_prec (HsEqTy ty1 ty2) unicode qual _ = maybeParen ctxt_prec pREC_CTX $ - ppr_mono_lty pREC_OP ty1 unicode qual <+> char '~' <+> ppr_mono_lty pREC_OP ty2 unicode qual + ppr_mono_lty pREC_OP ty1 unicode qual HideEmptyContexts <+> char '~' <+> ppr_mono_lty pREC_OP ty2 unicode qual HideEmptyContexts -ppr_mono_ty ctxt_prec (HsAppTy fun_ty arg_ty) unicode qual +ppr_mono_ty ctxt_prec (HsAppTy fun_ty arg_ty) unicode qual _ = maybeParen ctxt_prec pREC_CON $ - hsep [ppr_mono_lty pREC_FUN fun_ty unicode qual, ppr_mono_lty pREC_CON arg_ty unicode qual] + hsep [ppr_mono_lty pREC_FUN fun_ty unicode qual HideEmptyContexts, ppr_mono_lty pREC_CON arg_ty unicode qual HideEmptyContexts] -ppr_mono_ty ctxt_prec (HsOpTy ty1 op ty2) unicode qual +ppr_mono_ty ctxt_prec (HsOpTy ty1 op ty2) unicode qual _ = maybeParen ctxt_prec pREC_FUN $ - ppr_mono_lty pREC_OP ty1 unicode qual <+> ppr_op <+> ppr_mono_lty pREC_OP ty2 unicode qual + ppr_mono_lty pREC_OP ty1 unicode qual HideEmptyContexts <+> ppr_op <+> ppr_mono_lty pREC_OP ty2 unicode qual HideEmptyContexts where -- `(:)` is valid in type signature only as constructor to promoted list -- and needs to be quoted in code so we explicitly quote it here too. @@ -1029,25 +1075,24 @@ ppr_mono_ty ctxt_prec (HsOpTy ty1 op ty2) unicode qual | otherwise = ppr_op' ppr_op' = ppLDocName qual Infix op -ppr_mono_ty ctxt_prec (HsParTy ty) unicode qual +ppr_mono_ty ctxt_prec (HsParTy ty) unicode qual emptyCtxts -- = parens (ppr_mono_lty pREC_TOP ty) - = ppr_mono_lty ctxt_prec ty unicode qual + = ppr_mono_lty ctxt_prec ty unicode qual emptyCtxts -ppr_mono_ty ctxt_prec (HsDocTy ty _) unicode qual - = ppr_mono_lty ctxt_prec ty unicode qual +ppr_mono_ty ctxt_prec (HsDocTy ty _) unicode qual emptyCtxts + = ppr_mono_lty ctxt_prec ty unicode qual emptyCtxts -ppr_mono_ty _ (HsWildCardTy (AnonWildCard _)) _ _ = char '_' -ppr_mono_ty _ (HsTyLit n) _ _ = ppr_tylit n +ppr_mono_ty _ (HsWildCardTy (AnonWildCard _)) _ _ _ = char '_' +ppr_mono_ty _ (HsTyLit n) _ _ _ = ppr_tylit n ppr_tylit :: HsTyLit -> Html ppr_tylit (HsNumTy _ n) = toHtml (show n) ppr_tylit (HsStrTy _ s) = toHtml (show s) - -ppr_fun_ty :: Int -> LHsType DocNameI -> LHsType DocNameI -> Unicode -> Qualification -> Html -ppr_fun_ty ctxt_prec ty1 ty2 unicode qual - = let p1 = ppr_mono_lty pREC_FUN ty1 unicode qual - p2 = ppr_mono_lty pREC_TOP ty2 unicode qual +ppr_fun_ty :: Int -> LHsType DocNameI -> LHsType DocNameI -> Unicode -> Qualification -> HideEmptyContexts -> Html +ppr_fun_ty ctxt_prec ty1 ty2 unicode qual emptyCtxts + = let p1 = ppr_mono_lty pREC_FUN ty1 unicode qual HideEmptyContexts + p2 = ppr_mono_lty pREC_TOP ty2 unicode qual emptyCtxts in maybeParen ctxt_prec pREC_FUN $ hsep [p1, arrow unicode <+> p2] |