diff options
Diffstat (limited to 'compiler/GHC/Tc/Errors/Ppr.hs')
| -rw-r--r-- | compiler/GHC/Tc/Errors/Ppr.hs | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/Errors/Ppr.hs b/compiler/GHC/Tc/Errors/Ppr.hs index 8dae970dee..4ace7d3398 100644 --- a/compiler/GHC/Tc/Errors/Ppr.hs +++ b/compiler/GHC/Tc/Errors/Ppr.hs @@ -3074,7 +3074,20 @@ pprScopeError rdr_name scope_err = hang (text "No top-level binding for") 2 (what <+> quotes (ppr rdr_name) <+> text "in this module") UnknownSubordinate doc -> - quotes (ppr rdr_name) <+> text "is not a (visible)" <+> doc + quotes (ppr rdr_name) <+> text "is not a (visible)" <+> doc + UnknownAssociatedType _ _ code -> + case code of + Just c -> + text "The line:" + $+$ nest 2 (pprCode $ text c) + $+$ text "defines a default equation for type" <+> sname + <+> text "but" <+> sname <+> text "itself has not been declared." + Nothing -> + text "A default equation for" <+> sname <+> text "was found, but" <+> sname + <+> text "has not been declared." + where + sname = quotes (ppr rdr_name) + where what = pprNonVarNameSpace (occNameSpace (rdrNameOcc rdr_name)) @@ -3087,6 +3100,9 @@ scopeErrorHints scope_err = MissingBinding _ hints -> hints NoTopLevelBinding -> noHints UnknownSubordinate {} -> noHints + UnknownAssociatedType name rdr code -> + [SuggestDeclareAssociatedType name rdr decl] + where decl = head . split '=' <$> code {- ********************************************************************* * * |