diff options
Diffstat (limited to 'haddock-api/src/Haddock/Backends/LaTeX.hs')
| -rw-r--r-- | haddock-api/src/Haddock/Backends/LaTeX.hs | 483 |
1 files changed, 277 insertions, 206 deletions
diff --git a/haddock-api/src/Haddock/Backends/LaTeX.hs b/haddock-api/src/Haddock/Backends/LaTeX.hs index 793e40d8..51e183c7 100644 --- a/haddock-api/src/Haddock/Backends/LaTeX.hs +++ b/haddock-api/src/Haddock/Backends/LaTeX.hs @@ -179,13 +179,14 @@ string_txt (PStr s1) s2 = unpackFS s1 ++ s2 string_txt (ZStr s1) s2 = zString s1 ++ s2 string_txt (LStr s1 _) s2 = unpackLitString s1 ++ s2 - +-- | Prints out an entry in a module export list. exportListItem :: ExportItem DocNameI -> LaTeX exportListItem ExportDecl { expItemDecl = decl, expItemSubDocs = subdocs } - = sep (punctuate comma . map ppDocBinder $ declNames decl) <> - case subdocs of - [] -> empty - _ -> parens (sep (punctuate comma (map (ppDocBinder . fst) subdocs))) + = let (leader, names) = declNames decl + in sep (punctuate comma [ leader <+> ppDocBinder name | name <- names ]) <> + case subdocs of + [] -> empty + _ -> parens (sep (punctuate comma (map (ppDocBinder . fst) subdocs))) exportListItem (ExportNoDecl y []) = ppDocBinder y exportListItem (ExportNoDecl y subs) @@ -249,13 +250,17 @@ ppDocGroup lev doc = sec lev <> braces doc sec _ = text "\\paragraph" -declNames :: LHsDecl DocNameI -> [DocName] +-- | Given a declaration, extract out the names being declared +declNames :: LHsDecl DocNameI + -> ( LaTeX -- ^ to print before each name in an export list + , [DocName] -- ^ names being declared + ) declNames (L _ decl) = case decl of - TyClD d -> [tcdName d] - SigD (TypeSig lnames _ ) -> map unLoc lnames - SigD (PatSynSig lnames _) -> map unLoc lnames - ForD (ForeignImport (L _ n) _ _ _) -> [n] - ForD (ForeignExport (L _ n) _ _ _) -> [n] + TyClD d -> (empty, [tcdName d]) + SigD (TypeSig lnames _ ) -> (empty, map unLoc lnames) + SigD (PatSynSig lnames _) -> (text "pattern", map unLoc lnames) + ForD (ForeignImport (L _ n) _ _ _) -> (empty, [n]) + ForD (ForeignExport (L _ n) _ _ _) -> (empty, [n]) _ -> error "declaration not supported by declNames" @@ -278,47 +283,44 @@ moduleBasename mdl = map (\c -> if c == '.' then '-' else c) -- * Decls ------------------------------------------------------------------------------- - -ppDecl :: LHsDecl DocNameI - -> [(HsDecl DocNameI, DocForDecl DocName)] - -> DocForDecl DocName - -> [DocInstance DocNameI] - -> [(DocName, DocForDecl DocName)] - -> [(DocName, Fixity)] +-- | Pretty print a declaration +ppDecl :: LHsDecl DocNameI -- ^ decl to print + -> [(HsDecl DocNameI, DocForDecl DocName)] -- ^ all pattern decls + -> DocForDecl DocName -- ^ documentation for decl + -> [DocInstance DocNameI] -- ^ all instances + -> [(DocName, DocForDecl DocName)] -- ^ all subdocs + -> [(DocName, Fixity)] -- ^ all fixities -> LaTeX -ppDecl (L loc decl) pats (doc, fnArgsDoc) instances subdocs _fixities = case decl of - TyClD d@(FamDecl {}) -> ppTyFam False loc doc d unicode - TyClD d@(DataDecl {}) - -> ppDataDecl pats instances subdocs loc (Just doc) d unicode - TyClD d@(SynDecl {}) -> ppTySyn loc (doc, fnArgsDoc) d unicode +ppDecl decl pats (doc, fnArgsDoc) instances subdocs _fxts = case unLoc decl of + TyClD d@FamDecl {} -> ppTyFam False doc d unicode + TyClD d@DataDecl {} -> ppDataDecl pats instances subdocs (Just doc) d unicode + TyClD d@SynDecl {} -> ppTySyn (doc, fnArgsDoc) d unicode -- Family instances happen via FamInst now --- TyClD d@(TySynonym {}) +-- TyClD d@TySynonym{} -- | Just _ <- tcdTyPats d -> ppTyInst False loc doc d unicode -- Family instances happen via FamInst now - TyClD d@(ClassDecl {}) -> ppClassDecl instances loc doc subdocs d unicode - SigD (TypeSig lnames t) -> ppFunSig loc (doc, fnArgsDoc) (map unLoc lnames) - (hsSigWcType t) unicode - SigD (PatSynSig lnames ty) -> - ppLPatSig loc (doc, fnArgsDoc) (map unLoc lnames) ty unicode - ForD d -> ppFor loc (doc, fnArgsDoc) d unicode - InstD _ -> empty - DerivD _ -> empty - _ -> error "declaration not supported by ppDecl" + TyClD d@ClassDecl{} -> ppClassDecl instances doc subdocs d unicode + SigD (TypeSig lnames ty) -> ppFunSig (doc, fnArgsDoc) (map unLoc lnames) (hsSigWcType ty) unicode + SigD (PatSynSig lnames ty) -> ppLPatSig (doc, fnArgsDoc) (map unLoc lnames) ty unicode + ForD d -> ppFor (doc, fnArgsDoc) d unicode + InstD _ -> empty + DerivD _ -> empty + _ -> error "declaration not supported by ppDecl" where unicode = False -ppTyFam :: Bool -> SrcSpan -> Documentation DocName -> +ppTyFam :: Bool -> Documentation DocName -> TyClDecl DocNameI -> Bool -> LaTeX -ppTyFam _ _ _ _ _ = +ppTyFam _ _ _ _ = error "type family declarations are currently not supported by --latex" -ppFor :: SrcSpan -> DocForDecl DocName -> ForeignDecl DocNameI -> Bool -> LaTeX -ppFor loc doc (ForeignImport (L _ name) typ _ _) unicode = - ppFunSig loc doc [name] (hsSigType typ) unicode -ppFor _ _ _ _ = error "ppFor error in Haddock.Backends.LaTeX" +ppFor :: DocForDecl DocName -> ForeignDecl DocNameI -> Bool -> LaTeX +ppFor doc (ForeignImport (L _ name) typ _ _) unicode = + ppFunSig doc [name] (hsSigType typ) unicode +ppFor _ _ _ = error "ppFor error in Haddock.Backends.LaTeX" -- error "foreign declarations are currently not supported by --latex" @@ -328,18 +330,18 @@ ppFor _ _ _ _ = error "ppFor error in Haddock.Backends.LaTeX" -- we skip type patterns for now -ppTySyn :: SrcSpan -> DocForDecl DocName -> TyClDecl DocNameI -> Bool -> LaTeX +ppTySyn :: DocForDecl DocName -> TyClDecl DocNameI -> Bool -> LaTeX -ppTySyn loc doc (SynDecl { tcdLName = L _ name, tcdTyVars = ltyvars +ppTySyn doc (SynDecl { tcdLName = L _ name, tcdTyVars = ltyvars , tcdRhs = ltype }) unicode - = ppTypeOrFunSig loc [name] (unLoc ltype) doc (full, hdr, char '=') unicode + = ppTypeOrFunSig (unLoc ltype) doc (full, hdr, char '=') unicode where hdr = hsep (keyword "type" : ppDocBinder name : map ppSymName (tyvarNames ltyvars)) full = hdr <+> char '=' <+> ppLType unicode ltype -ppTySyn _ _ _ _ = error "declaration not supported by ppTySyn" +ppTySyn _ _ _ = error "declaration not supported by ppTySyn" ------------------------------------------------------------------------------- @@ -347,61 +349,98 @@ ppTySyn _ _ _ _ = error "declaration not supported by ppTySyn" ------------------------------------------------------------------------------- -ppFunSig :: SrcSpan -> DocForDecl DocName -> [DocName] -> LHsType DocNameI +ppFunSig :: DocForDecl DocName -> [DocName] -> LHsType DocNameI -> Bool -> LaTeX -ppFunSig loc doc docnames (L _ typ) unicode = - ppTypeOrFunSig loc docnames typ doc +ppFunSig doc docnames (L _ typ) unicode = + ppTypeOrFunSig typ doc ( ppTypeSig names typ False , hsep . punctuate comma $ map ppSymName names - , dcolon unicode) + , dcolon unicode + ) unicode where names = map getName docnames -ppLPatSig :: SrcSpan -> DocForDecl DocName -> [DocName] - -> LHsSigType DocNameI - -> Bool -> LaTeX -ppLPatSig _loc (doc, _argDocs) docnames ty unicode - = declWithDoc pref1 (documentationToLaTeX doc) +-- | Pretty-print a pattern synonym +ppLPatSig :: DocForDecl DocName -- ^ documentation + -> [DocName] -- ^ pattern names in the pattern signature + -> LHsSigType DocNameI -- ^ type of the pattern synonym + -> Bool -- ^ unicode + -> LaTeX +ppLPatSig doc docnames ty unicode + = ppTypeOrFunSig typ doc + ( keyword "pattern" <+> ppTypeSig names typ False + , keyword "pattern" <+> (hsep . punctuate comma $ map ppSymName names) + , dcolon unicode + ) + unicode where - pref1 = hsep [ keyword "pattern" - , hsep $ punctuate comma $ map ppDocBinder docnames - , dcolon unicode - , ppLType unicode (hsSigType ty) - ] - -ppTypeOrFunSig :: SrcSpan -> [DocName] -> HsType DocNameI - -> DocForDecl DocName -> (LaTeX, LaTeX, LaTeX) - -> Bool -> LaTeX -ppTypeOrFunSig _ _ typ (doc, argDocs) (pref1, pref2, sep0) - unicode - | Map.null argDocs = - declWithDoc pref1 (documentationToLaTeX doc) - | otherwise = - declWithDoc pref2 $ Just $ + typ = unLoc (hsSigType ty) + names = map getName docnames + +-- | Pretty-print a type, adding documentation to the whole type and its +-- arguments as needed. +ppTypeOrFunSig :: HsType DocNameI + -> DocForDecl DocName -- ^ documentation + -> ( LaTeX -- ^ first-line (no-argument docs only) + , LaTeX -- ^ first-line (argument docs only) + , LaTeX -- ^ type prefix (argument docs only) + ) + -> Bool -- ^ unicode + -> LaTeX +ppTypeOrFunSig typ (doc, argDocs) (pref1, pref2, sep0) unicode + | Map.null argDocs = declWithDoc pref1 (documentationToLaTeX doc) + | otherwise = declWithDoc pref2 $ Just $ text "\\haddockbeginargs" $$ - do_args 0 sep0 typ $$ + vcat (map (uncurry (<->)) (ppSubSigLike unicode typ argDocs [] sep0)) $$ text "\\end{tabulary}\\par" $$ fromMaybe empty (documentationToLaTeX doc) + +-- This splits up a type signature along `->` and adds docs (when they exist) +-- to the arguments. The output is a list of (leader/seperator, argument and +-- its doc) +ppSubSigLike :: Bool -- ^ unicode + -> HsType DocNameI -- ^ type signature + -> FnArgsDoc DocName -- ^ docs to add + -> [(DocName, DocForDecl DocName)] -- ^ all subdocs (useful when we have `HsRecTy`) + -> LaTeX -- ^ seperator (beginning of first line) + -> [(LaTeX, LaTeX)] -- ^ arguments (leader/sep, type) +ppSubSigLike unicode typ argDocs subdocs leader = do_args 0 leader typ where - do_largs n leader (L _ t) = do_args n leader t - - arg_doc n = rDoc . fmap _doc $ Map.lookup n argDocs - - do_args :: Int -> LaTeX -> HsType DocNameI -> LaTeX - do_args _n leader (HsForAllTy tvs ltype) - = decltt leader - <-> decltt (hsep (forallSymbol unicode : ppTyVars tvs ++ [dot])) - <+> ppLType unicode ltype - do_args n leader (HsQualTy lctxt ltype) - = decltt leader - <-> ppLContextNoArrow lctxt unicode <+> nl $$ - do_largs n (darrow unicode) ltype - do_args n leader (HsFunTy lt r) - = decltt leader <-> decltt (ppLFunLhType unicode lt) <-> arg_doc n <+> nl $$ - do_largs (n+1) (arrow unicode) r - do_args n leader t - = decltt leader <-> decltt (ppType unicode t) <-> arg_doc n <+> nl + do_largs n leader (L _ t) = do_args n leader t + + arg_doc n = rDoc . fmap _doc $ Map.lookup n argDocs + + do_args :: Int -> LaTeX -> HsType DocNameI -> [(LaTeX, LaTeX)] + do_args _n leader (HsForAllTy tvs ltype) + = [ ( decltt leader + , decltt (hsep (forallSymbol unicode : ppTyVars tvs ++ [dot])) + <+> ppLType unicode ltype + ) ] + do_args n leader (HsQualTy lctxt ltype) + = (decltt leader, ppLContextNoArrow lctxt unicode <+> nl) + : do_largs n (darrow unicode) ltype + + do_args n leader (HsFunTy (L _ (HsRecTy fields)) r) + = [ (decltt ldr, latex <+> nl) + | (L _ field, ldr) <- zip fields (leader <+> gadtOpen : repeat gadtComma) + , let latex = ppSideBySideField subdocs unicode field + ] + ++ do_largs (n+1) (gadtEnd <+> arrow unicode) r + do_args n leader (HsFunTy lt r) + = (decltt leader, decltt (ppLFunLhType unicode lt) <-> arg_doc n <+> nl) + : do_largs (n+1) (arrow unicode) r + do_args n leader t + = [ (decltt leader, decltt (ppType unicode t) <-> arg_doc n <+> nl) ] + + -- 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 = hcat (replicate (if unicode then 3 else 4) (text "\\ ")) <> text "," + gadtEnd = hcat (replicate (if unicode then 3 else 4) (text "\\ ")) <> text "\\}" + gadtOpen = text "\\{" ppTypeSig :: [Name] -> HsType DocNameI -> Bool -> LaTeX @@ -483,10 +522,10 @@ ppFds fds unicode = hsep (map (ppDocName . unLoc) vars2) -ppClassDecl :: [DocInstance DocNameI] -> SrcSpan +ppClassDecl :: [DocInstance DocNameI] -> Documentation DocName -> [(DocName, DocForDecl DocName)] -> TyClDecl DocNameI -> Bool -> LaTeX -ppClassDecl instances loc doc subdocs +ppClassDecl instances doc subdocs (ClassDecl { tcdCtxt = lctxt, tcdLName = lname, tcdTyVars = ltyvars, tcdFDs = lfds , tcdSigs = lsigs, tcdATs = ats, tcdATDefs = at_defs }) unicode = declWithDoc classheader (if null body then Nothing else Just (vcat body)) $$ @@ -508,7 +547,7 @@ ppClassDecl instances loc doc subdocs methodTable = text "\\haddockpremethods{}\\textbf{Methods}" $$ - vcat [ ppFunSig loc doc names (hsSigWcType typ) unicode + vcat [ ppFunSig doc names (hsSigWcType typ) unicode | L _ (TypeSig lnames typ) <- lsigs , let doc = lookupAnySubdoc (head names) subdocs names = map unLoc lnames ] @@ -518,7 +557,7 @@ ppClassDecl instances loc doc subdocs instancesBit = ppDocInstances unicode instances -ppClassDecl _ _ _ _ _ _ = error "declaration type not supported by ppShortClassDecl" +ppClassDecl _ _ _ _ _ = error "declaration type not supported by ppShortClassDecl" ppDocInstances :: Bool -> [DocInstance DocNameI] -> LaTeX ppDocInstances _unicode [] = empty @@ -567,15 +606,17 @@ lookupAnySubdoc n subdocs = case lookup n subdocs of -- * Data & newtype declarations ------------------------------------------------------------------------------- - -ppDataDecl :: [(HsDecl DocNameI, DocForDecl DocName)] -> [DocInstance DocNameI] -> - [(DocName, DocForDecl DocName)] -> SrcSpan -> - Maybe (Documentation DocName) -> TyClDecl DocNameI -> Bool -> - LaTeX -ppDataDecl pats instances subdocs _loc doc dataDecl unicode - - = declWithDoc (ppDataHeader dataDecl unicode <+> whereBit) - (if null body then Nothing else Just (vcat body)) +-- | Pretty-print a data declaration +ppDataDecl :: [(HsDecl DocNameI, DocForDecl DocName)] -- ^ relevant patterns + -> [DocInstance DocNameI] -- ^ relevant instances + -> [(DocName, DocForDecl DocName)] -- ^ relevant decl docs + -> Maybe (Documentation DocName) -- ^ this decl's docs + -> TyClDecl DocNameI -- ^ data decl to print + -> Bool -- ^ unicode + -> LaTeX +ppDataDecl pats instances subdocs doc dataDecl unicode = + declWithDoc (ppDataHeader dataDecl unicode <+> whereBit) + (if null body then Nothing else Just (vcat body)) $$ instancesBit where @@ -587,28 +628,26 @@ ppDataDecl pats instances subdocs _loc doc dataDecl unicode (whereBit, leaders) | null cons , null pats = (empty,[]) - | null cons = (decltt (keyword "where"), repeat empty) + | null cons = (text "where", repeat empty) | otherwise = case resTy of - ConDeclGADT{} -> (decltt (keyword "where"), repeat empty) + ConDeclGADT{} -> (text "where", repeat empty) _ -> (empty, (decltt (text "=") : repeat (decltt (text "|")))) constrBit | null cons = Nothing | otherwise = Just $ + text "\\enspace" <+> emph (text "Constructors") <> text "\\par" $$ text "\\haddockbeginconstrs" $$ vcat (zipWith (ppSideBySideConstr subdocs unicode) leaders cons) $$ text "\\end{tabulary}\\par" patternBit - | null cons = Nothing - | otherwise = Just $ + | null pats = Nothing + | otherwise = Just $ + text "\\enspace" <+> emph (text "Bundled Patterns") <> text "\\par" $$ text "\\haddockbeginconstrs" $$ - vcat [ hsep [ keyword "pattern" - , hsep $ punctuate comma $ map (ppDocBinder . unLoc) lnames - , dcolon unicode - , ppLType unicode (hsSigType ty) - ] <-> rDoc (fmap _doc . combineDocumentation . fst $ d) - | (SigD (PatSynSig lnames ty),d) <- pats + vcat [ empty <-> ppSideBySidePat lnames typ d unicode + | (SigD (PatSynSig lnames typ), d) <- pats ] $$ text "\\end{tabulary}\\par" @@ -627,41 +666,100 @@ ppConstrHdr forall tvs ctxt unicode False -> empty -ppSideBySideConstr :: [(DocName, DocForDecl DocName)] -> Bool -> LaTeX - -> LConDecl DocNameI -> LaTeX -ppSideBySideConstr subdocs unicode leader (L _ con@(ConDeclH98 {})) = - leader <-> - case con_args con of - - PrefixCon args -> - decltt (hsep ((header_ unicode <+> ppOcc) : - map (ppLParendType unicode) args)) - <-> rDoc mbDoc <+> nl - - RecCon (L _ fields) -> - (decltt (header_ unicode <+> ppOcc) - <-> rDoc mbDoc <+> nl) - $$ - doRecordFields fields - - InfixCon arg1 arg2 -> - decltt (hsep [ header_ unicode <+> ppLParendType unicode arg1, - ppOcc, - ppLParendType unicode arg2 ]) - <-> rDoc mbDoc <+> nl +-- | Pretty-print a constructor +ppSideBySideConstr :: [(DocName, DocForDecl DocName)] -- ^ all decl docs + -> Bool -- ^ unicode + -> LaTeX -- ^ prefix to decl + -> LConDecl DocNameI -- ^ constructor decl + -> LaTeX +ppSideBySideConstr subdocs unicode leader (L _ con) = + leader <-> decltt decl <-> rDoc mbDoc <+> nl + $$ fieldPart + where + -- Find the name of a constructors in the decl (`getConName` always returns + -- a non-empty list) + aConName = unLoc (head (getConNames con)) + + occ = map (nameOccName . getName . unLoc) $ getConNames con + + ppOcc = cat (punctuate comma (map ppBinder occ)) + ppOccInfix = cat (punctuate comma (map ppBinderInfix 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 + + -- First line of the constructor (no doc, no fields, single-line) + 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 + in case det of + -- Prefix constructor, e.g. 'Just a' + PrefixCon args + | hasArgDocs -> header_ <+> ppOcc + | otherwise -> hsep [ header_ + , ppOcc + , hsep (map (ppLParendType unicode) args) + ] + + -- Record constructor, e.g. 'Identity { runIdentity :: a }' + RecCon _ -> header_ <+> ppOcc + + -- Infix constructor, e.g. 'a :| [a]' + InfixCon arg1 arg2 + | hasArgDocs -> header_ <+> ppOcc + | otherwise -> hsep [ header_ + , ppLParendType unicode arg1 + , ppOccInfix + , ppLParendType unicode arg2 + ] + + ConDeclGADT{} + | hasArgDocs || not (isEmpty fieldPart) -> ppOcc + | otherwise -> hsep [ ppOcc + , dcolon unicode + -- ++AZ++ make this prepend "{..}" when it is a record style GADT + , ppLType unicode (getGADTConType con) + ] + + 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] + + _ -> empty - where doRecordFields fields = - vcat (map (ppSideBySideField subdocs unicode) (map unLoc fields)) + vcat [ empty <-> tt (text begin) <+> ppSideBySideField subdocs unicode field <+> nl + | (begin, L _ field) <- zip ("\\qquad \\{" : repeat "\\qquad ,") fields + ] + $$ + empty <-> tt (text "\\qquad \\}") <+> nl + doConstrArgsWithDocs args = vcat $ map (\l -> empty <-> text "\\qquad" <+> l) $ case con of + ConDeclH98{} -> + [ decltt (ppLParendType unicode arg) <-> rDoc (fmap _doc mdoc) <+> nl + | (i, arg) <- zip [0..] args + , let mdoc = Map.lookup i argDocs + ] + ConDeclGADT{} -> + [ l <+> text "\\enspace" <+> r + | (l,r) <- ppSubSigLike unicode (unLoc (getGADTConType con)) argDocs subdocs (dcolon unicode) + ] - header_ = ppConstrHdr False tyVars context - occ = map (nameOccName . getName . unLoc) $ getConNames con - ppOcc = case occ of - [one] -> ppBinder one - _ -> cat (punctuate comma (map ppBinder occ)) - tyVars = map (getName . hsLTyVarName) (con_ex_tvs con) - context = unLoc (fromMaybe (noLoc []) (con_mb_cxt con)) -- 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. @@ -670,27 +768,8 @@ ppSideBySideConstr subdocs unicode leader (L _ con@(ConDeclH98 {})) = (cn:_) -> lookup (unLoc cn) subdocs >>= fmap _doc . combineDocumentation . fst -ppSideBySideConstr subdocs unicode leader (L _ con@(ConDeclGADT {})) = - leader <-> - doGADTCon (getGADTConType con) - - where - doGADTCon resTy = decltt (ppOcc <+> dcolon unicode <+> - ppLType unicode resTy - ) <-> rDoc mbDoc - - occ = map (nameOccName . getName . unLoc) $ getConNames con - ppOcc = case occ of - [one] -> ppBinder one - _ -> cat (punctuate comma (map ppBinder occ)) - - -- 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 = case getConNames con of - [] -> panic "empty con_names" - (cn:_) -> lookup (unLoc cn) subdocs >>= - fmap _doc . combineDocumentation . fst +-- | Pretty-print a record field ppSideBySideField :: [(DocName, DocForDecl DocName)] -> Bool -> ConDeclField DocNameI -> LaTeX ppSideBySideField subdocs unicode (ConDeclField names ltype _) = decltt (cat (punctuate comma (map (ppBinder . rdrNameOcc . unLoc . rdrNameFieldOcc . unLoc) names)) @@ -700,51 +779,37 @@ ppSideBySideField subdocs unicode (ConDeclField names ltype _) = -- Where there is more than one name, they all have the same documentation mbDoc = lookup (selectorFieldOcc $ unLoc $ head names) subdocs >>= fmap _doc . combineDocumentation . fst --- {- --- ppHsFullConstr :: HsConDecl -> LaTeX --- ppHsFullConstr (HsConDecl _ nm tvs ctxt typeList doc) = --- declWithDoc False doc ( --- hsep ((ppHsConstrHdr tvs ctxt +++ --- ppHsBinder False nm) : map ppHsBangType typeList) --- ) --- ppHsFullConstr (HsRecDecl _ nm tvs ctxt fields doc) = --- td << vanillaTable << ( --- case doc of --- Nothing -> aboves [hdr, fields_html] --- Just _ -> aboves [hdr, constr_doc, fields_html] --- ) --- --- where hdr = declBox (ppHsConstrHdr tvs ctxt +++ ppHsBinder False nm) --- --- constr_doc --- | isJust doc = docBox (docToLaTeX (fromJust doc)) --- | otherwise = LaTeX.emptyTable --- --- fields_html = --- td << --- table ! [width "100%", cellpadding 0, cellspacing 8] << ( --- aboves (map ppFullField (concat (map expandField fields))) --- ) --- -} --- --- ppShortField :: Bool -> Bool -> ConDeclField DocName -> LaTeX --- ppShortField summary unicode (ConDeclField (L _ name) ltype _) --- = tda [theclass "recfield"] << ( --- ppBinder summary (docNameOcc name) --- <+> dcolon unicode <+> ppLType unicode ltype --- ) --- --- {- --- ppFullField :: HsFieldDecl -> LaTeX --- ppFullField (HsFieldDecl [n] ty doc) --- = declWithDoc False doc ( --- ppHsBinder False n <+> dcolon <+> ppHsBangType ty --- ) --- ppFullField _ = error "ppFullField" --- --- expandField :: HsFieldDecl -> [HsFieldDecl] --- expandField (HsFieldDecl ns ty doc) = [ HsFieldDecl [n] ty doc | n <- ns ] --- -} + +-- | Pretty-print a bundled pattern synonym +ppSideBySidePat :: [Located DocName] -- ^ pattern name(s) + -> LHsSigType DocNameI -- ^ type of pattern(s) + -> DocForDecl DocName -- ^ doc map + -> Bool -- ^ unicode + -> LaTeX +ppSideBySidePat lnames typ (doc, argDocs) unicode = + decltt decl <-> rDoc mDoc <+> nl + $$ fieldPart + where + hasArgDocs = not $ Map.null argDocs + ppOcc = hsep (punctuate comma (map (ppDocBinder . unLoc) lnames)) + + decl | hasArgDocs = keyword "pattern" <+> ppOcc + | otherwise = hsep [ keyword "pattern" + , ppOcc + , dcolon unicode + , ppLType unicode (hsSigType typ) + ] + + fieldPart + | not hasArgDocs = empty + | otherwise = vcat + [ empty <-> text "\\qquad" <+> l <+> text "\\enspace" <+> r + | (l,r) <- ppSubSigLike unicode (unLoc patTy) argDocs [] (dcolon unicode) + ] + + patTy = hsSigType typ + + mDoc = fmap _doc $ combineDocumentation doc -- | Print the LHS of a data\/newtype declaration. @@ -760,6 +825,7 @@ ppDataHeader (DataDecl { tcdLName = L _ name, tcdTyVars = tyvars ppAppDocNameNames False name (tyvarNames tyvars) ppDataHeader _ _ = error "ppDataHeader: illegal argument" + -------------------------------------------------------------------------------- -- * Type applications -------------------------------------------------------------------------------- @@ -911,7 +977,7 @@ ppr_mono_ty _ (HsListTy ty) u = brackets (ppr_mono_lty pREC_TOP ty ppr_mono_ty _ (HsPArrTy ty) u = pabrackets (ppr_mono_lty pREC_TOP ty u) ppr_mono_ty _ (HsIParamTy (L _ n) ty) u = brackets (ppIPName n <+> dcolon u <+> ppr_mono_lty pREC_TOP ty u) ppr_mono_ty _ (HsSpliceTy {}) _ = error "ppr_mono_ty HsSpliceTy" -ppr_mono_ty _ (HsRecTy {}) _ = error "ppr_mono_ty HsRecTy" +ppr_mono_ty _ (HsRecTy {}) _ = text "{..}" ppr_mono_ty _ (HsCoreTy {}) _ = error "ppr_mono_ty HsCoreTy" ppr_mono_ty _ (HsExplicitListTy Promoted _ tys) u = Pretty.quote $ brackets $ hsep $ punctuate comma $ map (ppLType u) tys ppr_mono_ty _ (HsExplicitListTy NotPromoted _ tys) u = brackets $ hsep $ punctuate comma $ map (ppLType u) tys @@ -972,6 +1038,11 @@ ppBinder n | isInfixName n = parens $ ppOccName n | otherwise = ppOccName n +ppBinderInfix :: OccName -> LaTeX +ppBinderInfix n + | isInfixName n = ppOccName n + | otherwise = cat [ char '`', ppOccName n, char '`' ] + isInfixName :: OccName -> Bool isInfixName n = isVarSym n || isConSym n |