mkLocalFamInstTyThing (ATyCon tycon) = mkLocalFamInst tycon
mkLocalFamInstTyThing tything = pprPanic "TcInstDcls.addFamInsts"
(ppr tything)
-\end{code}
+\end{code}
\begin{code}
tcLocalInstDecl1 :: LInstDecl Name
tcInstDecl2 (InstInfo { iSpec = ispec, iBinds = NewTypeDerived mb_preds })
= do { let dfun_id = instanceDFunId ispec
- rigid_info = InstSkol dfun_id
+ rigid_info = InstSkol
origin = SigOrigin rigid_info
inst_ty = idType dfun_id
; (tvs, theta, inst_head_ty) <- tcSkolSigType rigid_info inst_ty
make_wrapper inst_loc tvs theta (Just preds) -- Case (a)
= ASSERT( null tvs && null theta )
do { dicts <- newDictBndrs inst_loc preds
- ; sc_binds <- addErrCtxt superClassCtxt (tcSimplifySuperClasses [] [] dicts)
+ ; sc_binds <- addErrCtxt superClassCtxt $
+ tcSimplifySuperClasses inst_loc [] dicts
-- Use tcSimplifySuperClasses to avoid creating loops, for the
-- same reason as Note [SUPERCLASS-LOOP 1] in TcSimplify
; return (map instToId dicts, idHsWrapper, sc_binds) }
tcInstDecl2 (InstInfo { iSpec = ispec, iBinds = VanillaInst monobinds uprags })
= let
dfun_id = instanceDFunId ispec
- rigid_info = InstSkol dfun_id
+ rigid_info = InstSkol
inst_ty = idType dfun_id
in
-- Prime error recovery
-- Don't include this_dict in the 'givens', else
-- sc_dicts get bound by just selecting from this_dict!!
addErrCtxt superClassCtxt
- (tcSimplifySuperClasses inst_tyvars'
- dfun_arg_dicts
- sc_dicts) `thenM` \ sc_binds ->
+ (tcSimplifySuperClasses inst_loc
+ dfun_arg_dicts sc_dicts) `thenM` \ sc_binds ->
-- It's possible that the superclass stuff might unified one
-- of the inst_tyavars' with something in the envt