diff options
Diffstat (limited to 'pretyping/typeclasses.ml')
| -rw-r--r-- | pretyping/typeclasses.ml | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/pretyping/typeclasses.ml b/pretyping/typeclasses.ml index 765060b46c..a1b07cb9f2 100644 --- a/pretyping/typeclasses.ml +++ b/pretyping/typeclasses.ml @@ -226,12 +226,14 @@ let class_info c = try Gmap.find c !classes with _ -> not_a_class (Global.env()) (constr_of_global c) -let instance_constructor cl = - match cl.cl_impl with - | IndRef ind -> (fun args -> applistc (mkConstruct (ind, 1)) args), mkInd ind - | ConstRef cst -> list_last, mkConst cst - | _ -> assert false - +let instance_constructor cl args = + let pars = fst (list_chop (List.length cl.cl_context) args) in + match cl.cl_impl with + | IndRef ind -> applistc (mkConstruct (ind, 1)) args, + applistc (mkInd ind) pars + | ConstRef cst -> list_last args, applistc (mkConst cst) pars + | _ -> assert false + let typeclasses () = Gmap.fold (fun _ l c -> l :: c) !classes [] let cmapl_add x y m = |