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-rw-r--r--plugins/funind/functional_principles_proofs.ml15
-rw-r--r--plugins/funind/functional_principles_types.ml8
-rw-r--r--plugins/funind/glob_term_to_relation.ml4
-rw-r--r--plugins/funind/glob_termops.ml6
-rw-r--r--plugins/funind/glob_termops.mli2
-rw-r--r--plugins/funind/indfun.ml5
-rw-r--r--plugins/funind/indfun.mli3
-rw-r--r--plugins/funind/indfun_common.ml8
-rw-r--r--plugins/funind/indfun_common.mli6
-rw-r--r--plugins/funind/invfun.ml14
-rw-r--r--plugins/funind/invfun.mli2
-rw-r--r--plugins/funind/recdef.ml34
12 files changed, 56 insertions, 51 deletions
diff --git a/plugins/funind/functional_principles_proofs.ml b/plugins/funind/functional_principles_proofs.ml
index 8da0e1c4f2..ccf109ce1b 100644
--- a/plugins/funind/functional_principles_proofs.ml
+++ b/plugins/funind/functional_principles_proofs.ml
@@ -243,7 +243,7 @@ let change_eq env sigma hyp_id (context:rel_context) x t end_of_type =
raise NoChange;
end
in
- let eq_constr c1 c2 = Evarconv.e_conv env (ref sigma) c1 c2 in
+ let eq_constr c1 c2 = Option.has_some (Evarconv.conv env sigma c1 c2) in
if not (noccurn sigma 1 end_of_type)
then nochange "dependent"; (* if end_of_type depends on this term we don't touch it *)
if not (isApp sigma t) then nochange "not an equality";
@@ -414,9 +414,9 @@ let rewrite_until_var arg_num eq_ids : tactic =
let rec_pte_id = Id.of_string "Hrec"
let clean_hyp_with_heq ptes_infos eq_hyps hyp_id env sigma =
- let coq_False = EConstr.of_constr (Universes.constr_of_global @@ Coqlib.build_coq_False ()) in
- let coq_True = EConstr.of_constr (Universes.constr_of_global @@ Coqlib.build_coq_True ()) in
- let coq_I = EConstr.of_constr (Universes.constr_of_global @@ Coqlib.build_coq_I ()) in
+ let coq_False = EConstr.of_constr (UnivGen.constr_of_global @@ Coqlib.build_coq_False ()) in
+ let coq_True = EConstr.of_constr (UnivGen.constr_of_global @@ Coqlib.build_coq_True ()) in
+ let coq_I = EConstr.of_constr (UnivGen.constr_of_global @@ Coqlib.build_coq_I ()) in
let rec scan_type context type_of_hyp : tactic =
if isLetIn sigma type_of_hyp then
let real_type_of_hyp = it_mkProd_or_LetIn type_of_hyp context in
@@ -1013,7 +1013,7 @@ let generate_equation_lemma evd fnames f fun_num nb_params nb_args rec_args_num
lemma_type
(Lemmas.mk_hook (fun _ _ -> ()));
ignore (Pfedit.by (Proofview.V82.tactic prove_replacement));
- Lemmas.save_proof (Vernacexpr.(Proved(Transparent,None)));
+ Lemmas.save_proof (Vernacexpr.(Proved(Proof_global.Transparent,None)));
evd
@@ -1051,7 +1051,8 @@ let do_replace (evd:Evd.evar_map ref) params rec_arg_num rev_args_id f fun_num a
(Constrintern.locate_reference (qualid_of_ident equation_lemma_id))
in
evd:=evd';
- let _ = Typing.e_type_of ~refresh:true (Global.env ()) evd res in
+ let sigma, _ = Typing.type_of ~refresh:true (Global.env ()) !evd res in
+ evd := sigma;
res
in
let nb_intro_to_do = nb_prod (project g) (pf_concl g) in
@@ -1602,7 +1603,7 @@ let prove_principle_for_gen
match !tcc_lemma_ref with
| Undefined -> user_err Pp.(str "No tcc proof !!")
| Value lemma -> EConstr.of_constr lemma
- | Not_needed -> EConstr.of_constr (Universes.constr_of_global @@ Coqlib.build_coq_I ())
+ | Not_needed -> EConstr.of_constr (UnivGen.constr_of_global @@ Coqlib.build_coq_I ())
in
(* let rec list_diff del_list check_list = *)
(* match del_list with *)
diff --git a/plugins/funind/functional_principles_types.ml b/plugins/funind/functional_principles_types.ml
index 04a23cdb97..a158fc8ffc 100644
--- a/plugins/funind/functional_principles_types.ml
+++ b/plugins/funind/functional_principles_types.ml
@@ -291,7 +291,8 @@ let build_functional_principle (evd:Evd.evar_map ref) interactive_proof old_prin
let new_princ_name =
next_ident_away_in_goal (Id.of_string "___________princ_________") Id.Set.empty
in
- let _ = Typing.e_type_of ~refresh:true (Global.env ()) evd (EConstr.of_constr new_principle_type) in
+ let sigma, _ = Typing.type_of ~refresh:true (Global.env ()) !evd (EConstr.of_constr new_principle_type) in
+ evd := sigma;
let hook = Lemmas.mk_hook (hook new_principle_type) in
begin
Lemmas.start_proof
@@ -630,7 +631,8 @@ let build_scheme fas =
in
let evd',f = Evd.fresh_global (Global.env ()) !evd f_as_constant in
let _ = evd := evd' in
- let _ = Typing.e_type_of ~refresh:true (Global.env ()) evd f in
+ let sigma, _ = Typing.type_of ~refresh:true (Global.env ()) !evd f in
+ evd := sigma;
let c, u =
try EConstr.destConst !evd f
with DestKO ->
@@ -687,7 +689,7 @@ let build_case_scheme fa =
let scheme_type = EConstr.Unsafe.to_constr ((Typing.unsafe_type_of env sigma) (EConstr.of_constr scheme)) in
let sorts =
(fun (_,_,x) ->
- Universes.new_sort_in_family x
+ UnivGen.new_sort_in_family x
)
fa
in
diff --git a/plugins/funind/glob_term_to_relation.ml b/plugins/funind/glob_term_to_relation.ml
index 319b410df0..3ba3bafa44 100644
--- a/plugins/funind/glob_term_to_relation.ml
+++ b/plugins/funind/glob_term_to_relation.ml
@@ -885,7 +885,7 @@ let is_res r = match DAst.get r with
| _ -> false
let is_gr c gr = match DAst.get c with
-| GRef (r, _) -> Globnames.eq_gr r gr
+| GRef (r, _) -> GlobRef.equal r gr
| _ -> false
let is_gvar c = match DAst.get c with
@@ -894,7 +894,7 @@ let is_gvar c = match DAst.get c with
let same_raw_term rt1 rt2 =
match DAst.get rt1, DAst.get rt2 with
- | GRef(r1,_), GRef (r2,_) -> Globnames.eq_gr r1 r2
+ | GRef(r1,_), GRef (r2,_) -> GlobRef.equal r1 r2
| GHole _, GHole _ -> true
| _ -> false
let decompose_raw_eq lhs rhs =
diff --git a/plugins/funind/glob_termops.ml b/plugins/funind/glob_termops.ml
index 845104c3c7..ae238b846c 100644
--- a/plugins/funind/glob_termops.ml
+++ b/plugins/funind/glob_termops.ml
@@ -563,8 +563,8 @@ let resolve_and_replace_implicits ?(flags=Pretyping.all_and_fail_flags) ?(expect
(* FIXME : JF (30/03/2017) I'm not completely sure to have split understand as needed.
If someone knows how to prevent solved existantial removal in understand, please do not hesitate to change the computation of [ctx] here *)
let ctx,_,_ = Pretyping.ise_pretype_gen flags env sigma Glob_ops.empty_lvar expected_type rt in
- let ctx, f = Evarutil.nf_evars_and_universes ctx in
- let f c = EConstr.of_constr (f (EConstr.Unsafe.to_constr c)) in
+ let ctx = Evd.minimize_universes ctx in
+ let f c = EConstr.of_constr (Evarutil.nf_evars_universes ctx (EConstr.Unsafe.to_constr c)) in
(* then we map [rt] to replace the implicit holes by their values *)
let rec change rt =
@@ -576,7 +576,7 @@ If someone knows how to prevent solved existantial removal in understand, pleas
(fun _ evi _ ->
match evi.evar_source with
| (loc_evi,ImplicitArg(gr_evi,p_evi,b_evi)) ->
- if Globnames.eq_gr grk gr_evi && pk=p_evi && bk=b_evi && rt.CAst.loc = loc_evi
+ if GlobRef.equal grk gr_evi && pk=p_evi && bk=b_evi && rt.CAst.loc = loc_evi
then raise (Found evi)
| _ -> ()
)
diff --git a/plugins/funind/glob_termops.mli b/plugins/funind/glob_termops.mli
index 7088ae596b..481a8be3ba 100644
--- a/plugins/funind/glob_termops.mli
+++ b/plugins/funind/glob_termops.mli
@@ -13,7 +13,7 @@ val pattern_to_term : cases_pattern -> glob_constr
Some basic functions to rebuild glob_constr
In each of them the location is Util.Loc.ghost
*)
-val mkGRef : Globnames.global_reference -> glob_constr
+val mkGRef : GlobRef.t -> glob_constr
val mkGVar : Id.t -> glob_constr
val mkGApp : glob_constr*(glob_constr list) -> glob_constr
val mkGLambda : Name.t * glob_constr * glob_constr -> glob_constr
diff --git a/plugins/funind/indfun.ml b/plugins/funind/indfun.ml
index 748d8add22..efbd029e48 100644
--- a/plugins/funind/indfun.ml
+++ b/plugins/funind/indfun.ml
@@ -385,7 +385,8 @@ let generate_principle (evd:Evd.evar_map ref) pconstants on_error
let evd = ref (Evd.from_env env) in
let evd',uprinc = Evd.fresh_global env !evd princ in
let _ = evd := evd' in
- let princ_type = Typing.e_type_of ~refresh:true env evd uprinc in
+ let sigma, princ_type = Typing.type_of ~refresh:true env !evd uprinc in
+ evd := sigma;
let princ_type = EConstr.Unsafe.to_constr princ_type in
Functional_principles_types.generate_functional_principle
evd
@@ -846,7 +847,7 @@ let rec get_args b t : Constrexpr.local_binder_expr list *
| _ -> [],b,t
-let make_graph (f_ref:global_reference) =
+let make_graph (f_ref : GlobRef.t) =
let c,c_body =
match f_ref with
| ConstRef c ->
diff --git a/plugins/funind/indfun.mli b/plugins/funind/indfun.mli
index dcc1c2ea6a..24304e361b 100644
--- a/plugins/funind/indfun.mli
+++ b/plugins/funind/indfun.mli
@@ -1,3 +1,4 @@
+open Names
open Misctypes
val warn_cannot_define_graph : ?loc:Loc.t -> Pp.t * Pp.t -> unit
@@ -18,4 +19,4 @@ val functional_induction :
Goal.goal Evd.sigma -> Goal.goal list Evd.sigma
-val make_graph : Globnames.global_reference -> unit
+val make_graph : GlobRef.t -> unit
diff --git a/plugins/funind/indfun_common.ml b/plugins/funind/indfun_common.ml
index a0b9217c75..35c3acd411 100644
--- a/plugins/funind/indfun_common.ml
+++ b/plugins/funind/indfun_common.ml
@@ -117,7 +117,7 @@ let def_of_const t =
|_ -> assert false
let coq_constant s =
- Universes.constr_of_global @@
+ UnivGen.constr_of_global @@
Coqlib.gen_reference_in_modules "RecursiveDefinition"
Coqlib.init_modules s;;
@@ -471,7 +471,7 @@ let jmeq () =
try
Coqlib.check_required_library Coqlib.jmeq_module_name;
EConstr.of_constr @@
- Universes.constr_of_global @@
+ UnivGen.constr_of_global @@
Coqlib.coq_reference "Function" ["Logic";"JMeq"] "JMeq"
with e when CErrors.noncritical e -> raise (ToShow e)
@@ -479,7 +479,7 @@ let jmeq_refl () =
try
Coqlib.check_required_library Coqlib.jmeq_module_name;
EConstr.of_constr @@
- Universes.constr_of_global @@
+ UnivGen.constr_of_global @@
Coqlib.coq_reference "Function" ["Logic";"JMeq"] "JMeq_refl"
with e when CErrors.noncritical e -> raise (ToShow e)
@@ -492,7 +492,7 @@ let well_founded = function () -> EConstr.of_constr (coq_constant "well_founded"
let acc_rel = function () -> EConstr.of_constr (coq_constant "Acc")
let acc_inv_id = function () -> EConstr.of_constr (coq_constant "Acc_inv")
-let well_founded_ltof () = EConstr.of_constr @@ Universes.constr_of_global @@
+let well_founded_ltof () = EConstr.of_constr @@ UnivGen.constr_of_global @@
Coqlib.coq_reference "" ["Arith";"Wf_nat"] "well_founded_ltof"
let ltof_ref = function () -> (find_reference ["Coq";"Arith";"Wf_nat"] "ltof")
diff --git a/plugins/funind/indfun_common.mli b/plugins/funind/indfun_common.mli
index 5cc7163aa3..346b21ef2a 100644
--- a/plugins/funind/indfun_common.mli
+++ b/plugins/funind/indfun_common.mli
@@ -41,7 +41,7 @@ val chop_rprod_n : int -> Glob_term.glob_constr ->
val def_of_const : Constr.t -> Constr.t
val eq : EConstr.constr Lazy.t
val refl_equal : EConstr.constr Lazy.t
-val const_of_id: Id.t -> Globnames.global_reference(* constantyes *)
+val const_of_id: Id.t -> GlobRef.t(* constantyes *)
val jmeq : unit -> EConstr.constr
val jmeq_refl : unit -> EConstr.constr
@@ -107,11 +107,11 @@ val h_intros: Names.Id.t list -> Tacmach.tactic
val h_id : Names.Id.t
val hrec_id : Names.Id.t
val acc_inv_id : EConstr.constr Util.delayed
-val ltof_ref : Globnames.global_reference Util.delayed
+val ltof_ref : GlobRef.t Util.delayed
val well_founded_ltof : EConstr.constr Util.delayed
val acc_rel : EConstr.constr Util.delayed
val well_founded : EConstr.constr Util.delayed
-val evaluable_of_global_reference : Globnames.global_reference -> Names.evaluable_global_reference
+val evaluable_of_global_reference : GlobRef.t -> Names.evaluable_global_reference
val list_rewrite : bool -> (EConstr.constr*bool) list -> Tacmach.tactic
val decompose_lam_n : Evd.evar_map -> int -> EConstr.t ->
diff --git a/plugins/funind/invfun.ml b/plugins/funind/invfun.ml
index 28e85268a3..b9d5ebf57c 100644
--- a/plugins/funind/invfun.ml
+++ b/plugins/funind/invfun.ml
@@ -81,7 +81,7 @@ let thin ids gl = Proofview.V82.of_tactic (Tactics.clear ids) gl
let make_eq () =
try
- EConstr.of_constr (Universes.constr_of_global (Coqlib.build_coq_eq ()))
+ EConstr.of_constr (UnivGen.constr_of_global (Coqlib.build_coq_eq ()))
with _ -> assert false
@@ -103,7 +103,8 @@ let generate_type evd g_to_f f graph i =
Evd.fresh_global (Global.env ()) !evd (Globnames.IndRef (fst (destInd !evd graph)))
in
evd:=evd';
- let graph_arity = Typing.e_type_of (Global.env ()) evd graph in
+ let sigma, graph_arity = Typing.type_of (Global.env ()) !evd graph in
+ evd := sigma;
let ctxt,_ = decompose_prod_assum !evd graph_arity in
let fun_ctxt,res_type =
match ctxt with
@@ -511,7 +512,7 @@ and intros_with_rewrite_aux : Tacmach.tactic =
intros_with_rewrite
] g
end
- | Ind _ when EConstr.eq_constr sigma t (EConstr.of_constr (Universes.constr_of_global @@ Coqlib.build_coq_False ())) ->
+ | Ind _ when EConstr.eq_constr sigma t (EConstr.of_constr (UnivGen.constr_of_global @@ Coqlib.build_coq_False ())) ->
Proofview.V82.of_tactic tauto g
| Case(_,_,v,_) ->
tclTHENLIST[
@@ -769,7 +770,8 @@ let derive_correctness make_scheme (funs: pconstant list) (graphs:inductive list
let type_info = (type_of_lemma_ctxt,type_of_lemma_concl) in
graphs_constr.(i) <- graph;
let type_of_lemma = EConstr.it_mkProd_or_LetIn type_of_lemma_concl type_of_lemma_ctxt in
- let _ = Typing.e_type_of (Global.env ()) evd type_of_lemma in
+ let sigma, _ = Typing.type_of (Global.env ()) !evd type_of_lemma in
+ evd := sigma;
let type_of_lemma = nf_zeta type_of_lemma in
observe (str "type_of_lemma := " ++ Printer.pr_leconstr_env (Global.env ()) !evd type_of_lemma);
type_of_lemma,type_info
@@ -816,7 +818,7 @@ let derive_correctness make_scheme (funs: pconstant list) (graphs:inductive list
ignore (Pfedit.by
(Proofview.V82.tactic (observe_tac ("prove correctness ("^(Id.to_string f_id)^")")
(proving_tac i))));
- (Lemmas.save_proof (Vernacexpr.(Proved(Transparent,None))));
+ (Lemmas.save_proof (Vernacexpr.(Proved(Proof_global.Transparent,None))));
let finfo = find_Function_infos (fst f_as_constant) in
(* let lem_cst = fst (destConst (Constrintern.global_reference lem_id)) in *)
let _,lem_cst_constr = Evd.fresh_global
@@ -877,7 +879,7 @@ let derive_correctness make_scheme (funs: pconstant list) (graphs:inductive list
ignore (Pfedit.by
(Proofview.V82.tactic (observe_tac ("prove completeness ("^(Id.to_string f_id)^")")
(proving_tac i)))) ;
- (Lemmas.save_proof (Vernacexpr.(Proved(Transparent,None))));
+ (Lemmas.save_proof (Vernacexpr.(Proved(Proof_global.Transparent,None))));
let finfo = find_Function_infos (fst f_as_constant) in
let _,lem_cst_constr = Evd.fresh_global
(Global.env ()) !evd (Constrintern.locate_reference (Libnames.qualid_of_ident lem_id)) in
diff --git a/plugins/funind/invfun.mli b/plugins/funind/invfun.mli
index ad306ab257..9151fd0e28 100644
--- a/plugins/funind/invfun.mli
+++ b/plugins/funind/invfun.mli
@@ -10,7 +10,7 @@
val invfun :
Misctypes.quantified_hypothesis ->
- Globnames.global_reference option ->
+ Names.GlobRef.t option ->
Evar.t Evd.sigma -> Evar.t list Evd.sigma
val derive_correctness :
(Evd.evar_map ref ->
diff --git a/plugins/funind/recdef.ml b/plugins/funind/recdef.ml
index fb9ae64bf4..45c9eff2fc 100644
--- a/plugins/funind/recdef.ml
+++ b/plugins/funind/recdef.ml
@@ -49,7 +49,7 @@ open Context.Rel.Declaration
(* Ugly things which should not be here *)
-let coq_constant m s = EConstr.of_constr @@ Universes.constr_of_global @@
+let coq_constant m s = EConstr.of_constr @@ UnivGen.constr_of_global @@
Coqlib.coq_reference "RecursiveDefinition" m s
let arith_Nat = ["Arith";"PeanoNat";"Nat"]
@@ -61,7 +61,7 @@ let pr_leconstr_rd =
let coq_init_constant s =
EConstr.of_constr (
- Universes.constr_of_global @@
+ UnivGen.constr_of_global @@
Coqlib.gen_reference_in_modules "RecursiveDefinition" Coqlib.init_modules s)
let find_reference sl s =
@@ -72,7 +72,7 @@ let declare_fun f_id kind ?univs value =
let ce = definition_entry ?univs value (*FIXME *) in
ConstRef(declare_constant f_id (DefinitionEntry ce, kind));;
-let defined () = Lemmas.save_proof (Vernacexpr.(Proved (Transparent,None)))
+let defined () = Lemmas.save_proof (Vernacexpr.(Proved (Proof_global.Transparent,None)))
let def_of_const t =
match (Constr.kind t) with
@@ -181,7 +181,7 @@ let simpl_iter clause =
clause
(* Others ugly things ... *)
-let (value_f: Constr.t list -> global_reference -> Constr.t) =
+let (value_f: Constr.t list -> GlobRef.t -> Constr.t) =
let open Term in
let open Constr in
fun al fterm ->
@@ -215,7 +215,7 @@ let (value_f: Constr.t list -> global_reference -> Constr.t) =
let body = EConstr.Unsafe.to_constr body in
it_mkLambda_or_LetIn body context
-let (declare_f : Id.t -> logical_kind -> Constr.t list -> global_reference -> global_reference) =
+let (declare_f : Id.t -> logical_kind -> Constr.t list -> GlobRef.t -> GlobRef.t) =
fun f_id kind input_type fterm_ref ->
declare_fun f_id kind (value_f input_type fterm_ref);;
@@ -356,7 +356,7 @@ type 'a infos =
f_id : Id.t; (* function name *)
f_constr : constr; (* function term *)
f_terminate : constr; (* termination proof term *)
- func : global_reference; (* functional reference *)
+ func : GlobRef.t; (* functional reference *)
info : 'a;
is_main_branch : bool; (* on the main branch or on a matched expression *)
is_final : bool; (* final first order term or not *)
@@ -1241,7 +1241,7 @@ let get_current_subgoals_types () =
exception EmptySubgoals
let build_and_l sigma l =
- let and_constr = Universes.constr_of_global @@ Coqlib.build_coq_and () in
+ let and_constr = UnivGen.constr_of_global @@ Coqlib.build_coq_and () in
let conj_constr = coq_conj () in
let mk_and p1 p2 =
mkApp(EConstr.of_constr and_constr,[|p1;p2|]) in
@@ -1306,9 +1306,9 @@ let build_new_goal_type () =
let is_opaque_constant c =
let cb = Global.lookup_constant c in
match cb.Declarations.const_body with
- | Declarations.OpaqueDef _ -> Vernacexpr.Opaque
- | Declarations.Undef _ -> Vernacexpr.Opaque
- | Declarations.Def _ -> Vernacexpr.Transparent
+ | Declarations.OpaqueDef _ -> Proof_global.Opaque
+ | Declarations.Undef _ -> Proof_global.Opaque
+ | Declarations.Def _ -> Proof_global.Transparent
let open_new_goal build_proof sigma using_lemmas ref_ goal_name (gls_type,decompose_and_tac,nb_goal) =
(* Pp.msgnl (str "gls_type := " ++ Printer.pr_lconstr gls_type); *)
@@ -1456,7 +1456,7 @@ let com_terminate
-let start_equation (f:global_reference) (term_f:global_reference)
+let start_equation (f:GlobRef.t) (term_f:GlobRef.t)
(cont_tactic:Id.t list -> tactic) g =
let sigma = project g in
let ids = pf_ids_of_hyps g in
@@ -1473,7 +1473,7 @@ let start_equation (f:global_reference) (term_f:global_reference)
observe_tac (str "prove_eq") (cont_tactic x)]) g;;
let (com_eqn : int -> Id.t ->
- global_reference -> global_reference -> global_reference
+ GlobRef.t -> GlobRef.t -> GlobRef.t
-> Constr.t -> unit) =
fun nb_arg eq_name functional_ref f_ref terminate_ref equation_lemma_type ->
let open CVars in
@@ -1533,14 +1533,12 @@ let recursive_definition is_mes function_name rec_impls type_of_f r rec_arg_num
let env = Global.env() in
let evd = Evd.from_env env in
let evd, function_type = interp_type_evars env evd type_of_f in
- let function_type = EConstr.Unsafe.to_constr function_type in
- let env = push_named (Context.Named.Declaration.LocalAssum (function_name,function_type)) env in
+ let env = EConstr.push_named (Context.Named.Declaration.LocalAssum (function_name,function_type)) env in
(* Pp.msgnl (str "function type := " ++ Printer.pr_lconstr function_type); *)
let evd, ty = interp_type_evars env evd ~impls:rec_impls eq in
- let ty = EConstr.Unsafe.to_constr ty in
- let evd, nf = Evarutil.nf_evars_and_universes evd in
- let equation_lemma_type = nf_betaiotazeta (EConstr.of_constr (nf ty)) in
- let function_type = nf function_type in
+ let evd = Evd.minimize_universes evd in
+ let equation_lemma_type = nf_betaiotazeta (Evarutil.nf_evar evd ty) in
+ let function_type = EConstr.to_constr ~abort_on_undefined_evars:false evd function_type in
let equation_lemma_type = EConstr.Unsafe.to_constr equation_lemma_type in
(* Pp.msgnl (str "lemma type := " ++ Printer.pr_lconstr equation_lemma_type ++ fnl ()); *)
let res_vars,eq' = decompose_prod equation_lemma_type in