-let generalize_tac
- ?(mk_fresh_name_callback = ProofEngineHelpers.mk_fresh_name)
- terms ~status:((proof,goal) as status)
-=
- let module C = Cic in
- let module P = PrimitiveTactics in
- let module T = Tacticals in
- let _,metasenv,_,_ = proof in
- let _,context,ty = List.find (function (m,_,_) -> m=goal) metasenv in
- let typ =
- match terms with
- [] -> assert false
- | he::tl ->
- (* We need to check that all the convertibility of all the terms *)
- List.iter
- (function t ->
- if not (CicReduction.are_convertible context he t) then
- raise AllSelectedTermsMustBeConvertible
- ) tl ;
- (CicTypeChecker.type_of_aux' metasenv context he)
- in
- T.thens
- ~start:
- (P.cut_tac
- (C.Prod(
- (mk_fresh_name_callback context C.Anonymous typ),
- typ,
- (ProofEngineReduction.replace_lifting_csc 1
- ~equality:(==)
- ~what:terms
- ~with_what:(List.map (function _ -> C.Rel 1) terms)
- ~where:ty)
- )))
- ~continuations: [(P.apply_tac ~term:(C.Rel 1)) ; T.id_tac]
- ~status
+let generalize_tac
+ ?(mk_fresh_name_callback = FreshNamesGenerator.mk_fresh_name ~subst:[]) terms
+ =
+ let module PET = ProofEngineTypes in
+ let generalize_tac mk_fresh_name_callback terms status =
+ let (proof, goal) = status in
+ let module C = Cic in
+ let module P = PrimitiveTactics in
+ let module T = Tacticals in
+ let _,metasenv,_,_ = proof in
+ let _,context,ty = CicUtil.lookup_meta goal metasenv in
+ let typ,_ =
+ match terms with
+ [] -> assert false
+ | he::tl ->
+ (* We need to check that all the convertibility of all the terms *)
+ let u = List.fold_left ( (* TASSI: FIXME *)
+ fun u t ->
+ let b,u1 = CicReduction.are_convertible context he t u in
+ if not b then
+ raise AllSelectedTermsMustBeConvertible
+ else
+ u1) CicUniv.empty_ugraph tl in
+ (CicTypeChecker.type_of_aux' metasenv context he u)
+ in
+ PET.apply_tactic
+ (T.thens
+ ~start:
+ (P.cut_tac
+ (C.Prod(
+ (mk_fresh_name_callback metasenv context C.Anonymous ~typ:typ),
+ typ,
+ (ProofEngineReduction.replace_lifting_csc 1
+ ~equality:(==)
+ ~what:terms
+ ~with_what:(List.map (function _ -> C.Rel 1) terms)
+ ~where:ty)
+ )))
+ ~continuations: [(P.apply_tac ~term:(C.Rel 1)) ; T.id_tac])
+ status
+ in
+ PET.mk_tactic (generalize_tac mk_fresh_name_callback terms)