diff options
Diffstat (limited to 'compiler/hsSyn/HsPat.hs')
| -rw-r--r-- | compiler/hsSyn/HsPat.hs | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/compiler/hsSyn/HsPat.hs b/compiler/hsSyn/HsPat.hs index 853e8cb70d..c29f0c25be 100644 --- a/compiler/hsSyn/HsPat.hs +++ b/compiler/hsSyn/HsPat.hs @@ -409,8 +409,7 @@ hsRecUpdFieldOcc = fmap unambiguousFieldOcc . hsRecFieldLbl ************************************************************************ -} -instance (OutputableBndrId name, HasOccNameId name) - => Outputable (Pat name) where +instance (OutputableBndrId name) => Outputable (Pat name) where ppr = pprPat pprPatBndr :: OutputableBndr name => name -> SDoc @@ -422,11 +421,10 @@ pprPatBndr var -- Print with type info if -dppr-debug is on else pprPrefixOcc var -pprParendLPat :: (OutputableBndrId name, HasOccNameId name) - => LPat name -> SDoc +pprParendLPat :: (OutputableBndrId name) => LPat name -> SDoc pprParendLPat (L _ p) = pprParendPat p -pprParendPat :: (OutputableBndrId name, HasOccNameId name) => Pat name -> SDoc +pprParendPat :: (OutputableBndrId name) => Pat name -> SDoc pprParendPat p = sdocWithDynFlags $ \ dflags -> if need_parens dflags p then parens (pprPat p) @@ -440,7 +438,7 @@ pprParendPat p = sdocWithDynFlags $ \ dflags -> -- But otherwise the CoPat is discarded, so it -- is the pattern inside that matters. Sigh. -pprPat :: (OutputableBndrId name, HasOccNameId name) => Pat name -> SDoc +pprPat :: (OutputableBndrId name) => Pat name -> SDoc pprPat (VarPat (L _ var)) = pprPatBndr var pprPat (WildPat _) = char '_' pprPat (LazyPat pat) = char '~' <> pprParendLPat pat @@ -477,13 +475,12 @@ pprPat (ConPatOut { pat_con = con, pat_tvs = tvs, pat_dicts = dicts, else pprUserCon (unLoc con) details -pprUserCon :: (OutputableBndr con, OutputableBndrId id, HasOccNameId id) +pprUserCon :: (OutputableBndr con, OutputableBndrId id) => con -> HsConPatDetails id -> SDoc pprUserCon c (InfixCon p1 p2) = ppr p1 <+> pprInfixOcc c <+> ppr p2 pprUserCon c details = pprPrefixOcc c <+> pprConArgs details -pprConArgs :: (OutputableBndrId id, HasOccNameId id) - => HsConPatDetails id -> SDoc +pprConArgs :: (OutputableBndrId id) => HsConPatDetails id -> SDoc pprConArgs (PrefixCon pats) = sep (map pprParendLPat pats) pprConArgs (InfixCon p1 p2) = sep [pprParendLPat p1, pprParendLPat p2] pprConArgs (RecCon rpats) = ppr rpats @@ -598,7 +595,7 @@ looksLazyLPat (L _ (VarPat {})) = False looksLazyLPat (L _ (WildPat {})) = False looksLazyLPat _ = True -isIrrefutableHsPat :: (OutputableBndrId id, HasOccNameId id) => LPat id -> Bool +isIrrefutableHsPat :: (OutputableBndrId id) => LPat id -> Bool -- (isIrrefutableHsPat p) is true if matching against p cannot fail, -- in the sense of falling through to the next pattern. -- (NB: this is not quite the same as the (silly) defn |