module TcDefaults ( tcDefaults ) where
-#include "HsVersions.h"
-
import HsSyn
import Name
import Class
= do { (_, mb_res) <- tryTc (tcSimplifyDefault [mkClassPred cls [ty]])
; return (isJust mb_res) }
-defaultDeclCtxt = ptext SLIT("When checking the types in a default declaration")
+defaultDeclCtxt = ptext (sLit "When checking the types in a default declaration")
dupDefaultDeclErr (L _ (DefaultDecl _) : dup_things)
- = hang (ptext SLIT("Multiple default declarations"))
+ = hang (ptext (sLit "Multiple default declarations"))
4 (vcat (map pp dup_things))
where
- pp (L locn (DefaultDecl _)) = ptext SLIT("here was another default declaration") <+> ppr locn
+ pp (L locn (DefaultDecl _)) = ptext (sLit "here was another default declaration") <+> ppr locn
polyDefErr ty
- = hang (ptext SLIT("Illegal polymorphic type in default declaration") <> colon) 4 (ppr ty)
+ = hang (ptext (sLit "Illegal polymorphic type in default declaration") <> colon) 4 (ppr ty)
badDefaultTy ty deflt_clss
- = hang (ptext SLIT("The default type") <+> quotes (ppr ty) <+> ptext SLIT("is not an instance of"))
- 2 (foldr1 (\a b -> a <+> ptext SLIT("or") <+> b) (map (quotes. ppr) deflt_clss))
+ = hang (ptext (sLit "The default type") <+> quotes (ppr ty) <+> ptext (sLit "is not an instance of"))
+ 2 (foldr1 (\a b -> a <+> ptext (sLit "or") <+> b) (map (quotes. ppr) deflt_clss))
\end{code}