--- a/src/Pure/Isar/code.ML Fri Nov 26 23:14:14 2010 +0100
+++ b/src/Pure/Isar/code.ML Fri Nov 26 23:50:14 2010 +0100
@@ -316,7 +316,7 @@
val data = case Datatab.lookup datatab kind
of SOME data => data
| NONE => invoke_init kind;
- val result as (x, data') = f (dest data);
+ val result as (_, data') = f (dest data);
val _ = Synchronized.change dataref
((K o SOME) (Datatab.update (kind, mk data') datatab, thy_ref));
in result end;
@@ -360,9 +360,9 @@
fun subst_signature thy c ty =
let
- fun mk_subst (Type (tyco, tys1)) (ty2 as Type (tyco2, tys2)) =
+ fun mk_subst (Type (_, tys1)) (Type (_, tys2)) =
fold2 mk_subst tys1 tys2
- | mk_subst ty (TVar (v, sort)) = Vartab.update (v, ([], ty))
+ | mk_subst ty (TVar (v, _)) = Vartab.update (v, ([], ty))
in case lookup_typ thy c
of SOME ty' => Envir.subst_type (mk_subst ty (expand_signature thy ty') Vartab.empty) ty'
| NONE => ty
@@ -407,8 +407,9 @@
val _ = if (tyco' : string) <> tyco
then error "Different type constructors in constructor set"
else ();
- val sorts'' = map2 (curry (Sorts.inter_sort (Sign.classes_of thy))) sorts' sorts
- in ((tyco, sorts), c :: cs) end;
+ val sorts'' =
+ map2 (curry (Sorts.inter_sort (Sign.classes_of thy))) sorts' sorts
+ in ((tyco, sorts''), c :: cs) end;
fun inst vs' (c, (vs, ty)) =
let
val the_v = the o AList.lookup (op =) (vs ~~ vs');
@@ -439,7 +440,7 @@
fun get_type_of_constr_or_abstr thy c =
case (snd o strip_type o const_typ thy) c
- of Type (tyco, _) => let val ((vs, cos), abstract) = get_type thy tyco
+ of Type (tyco, _) => let val ((_, cos), abstract) = get_type thy tyco
in if member (op =) (map fst cos) c then SOME (tyco, abstract) else NONE end
| _ => NONE;
@@ -641,19 +642,19 @@
else SOME (((v, i), x), mk ((v', 0), x))) (vs ~~ names)
end;
-fun desymbolize_tvars thy thms =
+fun desymbolize_tvars thms =
let
val tvs = fold (Term.add_tvars o Thm.prop_of) thms [];
val tvar_subst = mk_desymbolization (unprefix "'") (prefix "'") TVar tvs;
in map (Thm.certify_instantiate (tvar_subst, [])) thms end;
-fun desymbolize_vars thy thm =
+fun desymbolize_vars thm =
let
val vs = Term.add_vars (Thm.prop_of thm) [];
val var_subst = mk_desymbolization I I Var vs;
in Thm.certify_instantiate ([], var_subst) thm end;
-fun canonize_thms thy = desymbolize_tvars thy #> same_arity thy #> map (desymbolize_vars thy);
+fun canonize_thms thy = desymbolize_tvars #> same_arity thy #> map desymbolize_vars;
(* abstype certificates *)
@@ -672,13 +673,12 @@
then error ("Is a class parameter: " ^ string_of_const thy c) else ()) (abs, rep);
val _ = check_decl_ty thy (abs, raw_ty);
val _ = check_decl_ty thy (rep, rep_ty);
- val var = (fst o dest_Var) param
+ val _ = (fst o dest_Var) param
handle TERM _ => bad "Not an abstype certificate";
val _ = if param = rhs then () else bad "Not an abstype certificate";
val ((tyco, sorts), (abs, (vs, ty'))) = ty_sorts thy (abs, Logic.unvarifyT_global raw_ty);
val ty = domain_type ty';
val vs' = map dest_TFree (Sign.const_typargs thy (abs, ty'));
- val ty_abs = range_type ty';
in (tyco, (vs ~~ sorts, ((abs, (vs', ty)), (rep, thm)))) end;
@@ -716,7 +716,7 @@
fun concretify_abs thy tyco abs_thm =
let
- val (vs, ((c, _), (_, cert))) = get_abstype_spec thy tyco;
+ val (_, ((c, _), (_, cert))) = get_abstype_spec thy tyco;
val lhs = (fst o Logic.dest_equals o Thm.prop_of) abs_thm
val ty = fastype_of lhs;
val ty_abs = (fastype_of o snd o dest_comb) lhs;
@@ -746,8 +746,11 @@
val tvars = Term.add_tvar_namesT raw_ty [];
val tvars' = case AxClass.class_of_param thy c
of SOME class => [TFree (Name.aT, [class])]
- | NONE => Name.invent_list [] Name.aT (length tvars)
- |> map (fn v => TFree (v, []));
+ | NONE => (case get_type_of_constr_or_abstr thy c
+ of SOME (tyco, _) => map TFree ((fst o the)
+ (AList.lookup (op =) ((snd o fst o get_type thy) tyco) c))
+ | NONE => Name.invent_list [] Name.aT (length tvars)
+ |> map (fn v => TFree (v, [])));
val ty = typ_subst_TVars (tvars ~~ tvars') raw_ty;
val chead = build_head thy (c, ty);
in Equations (Thm.weaken chead Drule.dummy_thm, []) end;
@@ -767,19 +770,19 @@
fold (curry (Sorts.inter_sort (Sign.classes_of thy)) o snd) vs [];
val sorts = map_transpose inter_sorts vss;
val vts = Name.names Name.context Name.aT sorts;
- val thms as thm :: _ =
+ val thms' =
map2 (fn vs => Thm.certify_instantiate (vs ~~ map TFree vts, [])) vss thms;
- val head_thm = Thm.symmetric (Thm.assume (build_head thy (head_eqn (hd thms))));
+ val head_thm = Thm.symmetric (Thm.assume (build_head thy (head_eqn (hd thms'))));
fun head_conv ct = if can Thm.dest_comb ct
then Conv.fun_conv head_conv ct
else Conv.rewr_conv head_thm ct;
val rewrite_head = Conv.fconv_rule (Conv.arg1_conv head_conv);
- val cert_thm = Conjunction.intr_balanced (map rewrite_head thms);
+ val cert_thm = Conjunction.intr_balanced (map rewrite_head thms');
in Equations (cert_thm, propers) end;
fun cert_of_proj thy c tyco =
let
- val (vs, ((abs, (_, ty)), (rep, cert))) = get_abstype_spec thy tyco;
+ val (vs, ((abs, (_, ty)), (rep, _))) = get_abstype_spec thy tyco;
val _ = if c = rep then () else
error ("Wrong head of projection,\nexpected constant " ^ string_of_const thy rep);
in Projection (mk_proj tyco vs ty abs rep, tyco) end;
@@ -824,7 +827,7 @@
Thm.prop_of cert_thm
|> Logic.dest_conjunction_balanced (length propers);
in (vs, fold (add_rhss_of_eqn thy) equations []) end
- | typargs_deps_of_cert thy (Projection (t, tyco)) =
+ | typargs_deps_of_cert thy (Projection (t, _)) =
(fst (typscheme_projection thy t), add_rhss_of_eqn thy t [])
| typargs_deps_of_cert thy (Abstract (abs_thm, tyco)) =
let
@@ -864,7 +867,7 @@
o snd o equations_of_cert thy) cert
| pretty_cert thy (Projection (t, _)) =
[Syntax.pretty_term_global thy (map_types Logic.varifyT_global t)]
- | pretty_cert thy (Abstract (abs_thm, tyco)) =
+ | pretty_cert thy (Abstract (abs_thm, _)) =
[(Display.pretty_thm_global thy o AxClass.overload thy o Thm.varifyT_global) abs_thm];
fun bare_thms_of_cert thy (cert as Equations _) =
@@ -1118,7 +1121,7 @@
fun del_eqn thm thy = case mk_eqn_liberal thy thm
of SOME (thm, _) => let
- fun del_eqn' (Default eqns) = empty_fun_spec
+ fun del_eqn' (Default _) = empty_fun_spec
| del_eqn' (Eqns eqns) =
Eqns (filter_out (fn (thm', _) => Thm.eq_thm_prop (thm, thm')) eqns)
| del_eqn' spec = spec
@@ -1130,7 +1133,7 @@
(* cases *)
-fun case_cong thy case_const (num_args, (pos, constrs)) =
+fun case_cong thy case_const (num_args, (pos, _)) =
let
val ([x, y], ctxt) = Name.variants ["A", "A'"] Name.context;
val (zs, _) = Name.variants (replicate (num_args - 1) "") ctxt;