Improve the handling of default methods

[ghc-hetmet.git] / compiler / typecheck / TcClassDcl.lhs

diff --git a/compiler/typecheck/TcClassDcl.lhs b/compiler/typecheck/TcClassDcl.lhs
index 23ee423..2d113b7 100644 (file)
--- a/compiler/typecheck/TcClassDcl.lhs
+++ b/compiler/typecheck/TcClassDcl.lhs
@@ -179,7 +179,7 @@ tcClassDecl2 (L loc (ClassDecl {tcdLName = class_name, tcdSigs = sigs,
        ; let
              (tyvars, _, _, op_items) = classBigSig clas
              rigid_info  = ClsSkol clas
-             prag_fn     = mkPragFun sigs
+             prag_fn     = mkPragFun sigs default_binds
              sig_fn      = mkTcSigFun sigs
              clas_tyvars = tcSkolSigTyVars rigid_info tyvars
              pred        = mkClassPred clas (mkTyVarTys clas_tyvars)
@@ -234,16 +234,20 @@ tcDefMeth clas tyvars this_dict binds_in sig_fn prag_fn sel_id
         ; (dm_id_w_inline, spec_prags) 
                 <- tcPrags NonRecursive False True dm_id (prag_fn sel_name)
 
+        ; warnTc (not (null spec_prags))
+                 (ptext (sLit "Ignoring SPECIALISE pragmas on default method") 
+                  <+> quotes (ppr sel_name))
+
         ; tcInstanceMethodBody (instLoc this_dict) 
                                tyvars [this_dict]
                                ([], emptyBag)
                                dm_id_w_inline local_dm_id
-                               dm_sig_fn spec_prags meth_bind }
+                               dm_sig_fn IsDefaultMethod meth_bind }
 
 ---------------
 tcInstanceMethodBody :: InstLoc -> [TcTyVar] -> [Inst]
                     -> ([Inst], LHsBinds Id) -> Id -> Id
-                    -> TcSigFun -> [LSpecPrag] -> LHsBind Name 
+                    -> TcSigFun -> TcSpecPrags -> LHsBind Name 
                     -> TcM (Id, LHsBind Id)
 tcInstanceMethodBody inst_loc tyvars dfun_dicts
                     (this_dict, this_bind) meth_id local_meth_id