+ let urilist =
+ (* list of triples (uri,typeno,exp_named_subst) of Inductive Types found in term and chosen by the user *)
+ (* N.B.: due to a bug in call_back exp_named_subst are not significant (they all are []) *)
+ call_back (make_list termty) in
+
+ let rec elim_clear_tac ~term' ~nr_of_hyp_still_to_elim ~status:((proof,goal) as status) =
+prerr_endline ("%%%%%%% nr_of_hyp_still_to_elim=" ^ (string_of_int nr_of_hyp_still_to_elim));
+ if nr_of_hyp_still_to_elim <> 0 then
+ let _,metasenv,_,_ = proof in
+ let _,context,_ = List.find (function (m,_,_) -> m=goal) metasenv in
+ let old_context_len = List.length context in
+ let termty = CicTypeChecker.type_of_aux' metasenv context term' in
+prerr_endline ("%%%%%%% elim_clear termty= " ^ CicPp.ppterm termty);
+ match termty with
+ C.MutInd (uri,typeno,exp_named_subst)
+ | C.Appl((C.MutInd (uri,typeno,exp_named_subst))::_)
+ when (List.mem (uri,typeno,exp_named_subst) urilist) ->
+prerr_endline ("%%%%%%% elim " ^ CicPp.ppterm termty);
+ T.then_
+ ~start:(P.elim_intros_simpl_tac ~term:term')
+ ~continuation:(
+ (* clear the hyp that has just been eliminated *)
+ (fun ~status:((proof,goal) as status) ->
+ let _,metasenv,_,_ = proof in
+ let _,context,_ = List.find (function (m,_,_) -> m=goal) metasenv in
+ let new_context_len = List.length context in
+prerr_endline ("%%%%%%% newcon=" ^ (string_of_int new_context_len) ^ " & oldcon=" ^ (string_of_int old_context_len) ^ " & old_nr_of_hyp=" ^ (string_of_int nr_of_hyp_still_to_elim));
+ let new_nr_of_hyp_still_to_elim = nr_of_hyp_still_to_elim + (new_context_len - old_context_len) - 1 in
+ T.then_
+ ~start:(
+ if (term'==term) (* this is the first application of elim: there's no need to clear the hyp *)
+ then begin prerr_endline ("%%%%%%% no clear"); T.id_tac end
+ else begin prerr_endline ("%%%%%%% clear " ^ (string_of_int (new_nr_of_hyp_still_to_elim))); (S.clear ~hyp:(List.nth context (new_nr_of_hyp_still_to_elim))) end)
+ ~continuation:(elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim)
+ ~status
+ ))
+ ~status
+ | _ ->
+ let new_nr_of_hyp_still_to_elim = nr_of_hyp_still_to_elim - 1 in
+prerr_endline ("%%%%%%% fail; hyp=" ^ (string_of_int new_nr_of_hyp_still_to_elim));
+ elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim ~status
+ else (* raise (ProofEngineTypes.Fail "Decomopse: finished decomposing"); *) T.id_tac ~status