Pat(..), InPat, OutPat, LPat,
HsConDetails(..), hsConArgs,
+ HsRecField(..), mkRecField,
mkPrefixConPat, mkCharLitPat, mkNilPat, mkCoPat,
emptyLHsBinds, pprLHsBinds )
import HsLit ( HsLit(HsCharPrim), HsOverLit )
import HsTypes ( LHsType, PostTcType )
+import HsDoc ( LHsDoc, ppr_mbDoc )
import BasicTypes ( Boxity, tupleParens )
-- others:
import PprCore ( {- instance OutputableBndr TyVar -} )
\begin{code}
data HsConDetails id arg
- = PrefixCon [arg] -- C p1 p2 p3
- | RecCon [(Located id, arg)] -- C { x = p1, y = p2 }
- | InfixCon arg arg -- p1 `C` p2
+ = PrefixCon [arg] -- C p1 p2 p3
+ | RecCon [HsRecField id arg] -- C { x = p1, y = p2 }
+ | InfixCon arg arg -- p1 `C` p2
+
+data HsRecField id arg = HsRecField {
+ hsRecFieldId :: Located id,
+ hsRecFieldArg :: arg,
+ hsRecFieldDoc :: Maybe (LHsDoc id)
+}
+
+mkRecField id arg = HsRecField id arg Nothing
hsConArgs :: HsConDetails id arg -> [arg]
hsConArgs (PrefixCon ps) = ps
-hsConArgs (RecCon fs) = map snd fs
+hsConArgs (RecCon fs) = map hsRecFieldArg fs
hsConArgs (InfixCon p1 p2) = [p1,p2]
\end{code}
pprConArgs (InfixCon p1 p2) = interppSP [p1,p2]
pprConArgs (RecCon rpats) = braces (hsep (punctuate comma (map (pp_rpat) rpats)))
where
- pp_rpat (v, p) = hsep [ppr v, char '=', ppr p]
-
+ pp_rpat (HsRecField v p d) =
+ hsep [ppr d, ppr v, char '=', ppr p]
-- add parallel array brackets around a document
--
pabrackets :: SDoc -> SDoc
pabrackets p = ptext SLIT("[:") <> p <> ptext SLIT(":]")
+
+instance (OutputableBndr id, Outputable arg) =>
+ Outputable (HsRecField id arg) where
+ ppr (HsRecField n ty doc) = ppr n <+> dcolon <+> ppr ty <+> ppr_mbDoc doc
\end{code}