- match lhs with
- None ->
- let plhs,prhs =
- match
- fst
- (CicTypeChecker.type_of_aux' metasenv context (Cic.Rel 1)
- CicUniv.empty_ugraph)
- with
- Cic.Appl [_;_;plhs;prhs] -> plhs,prhs
- | _ -> assert false in
- let last_hyp_name =
- match context with
- (Some (Cic.Name id,_))::_ -> id
- | _ -> assert false
- in
- (match conclude with
- None ->
- ProofEngineTypes.apply_tactic
- (Tacticals.thens
- ~start:(Tactics.apply ~term:trans)
- ~continuations:
- [ Tactics.apply prhs ;
- Tactics.apply (Cic.Rel 1) ;
- just]) status
- | Some name ->
- let mk_fresh_name_callback =
- fun metasenv context _ ~typ ->
- FreshNamesGenerator.mk_fresh_name ~subst:[]
- metasenv context name ~typ
- in
- ProofEngineTypes.apply_tactic
- (Tacticals.thens
- ~start:(Tactics.cut ~mk_fresh_name_callback
- (Cic.Appl [eq ; ty ; plhs ; rhs]))
- ~continuations:
- [ Tactics.clear ~hyps:[last_hyp_name] ;
- Tacticals.thens
- ~start:(Tactics.apply ~term:trans)
- ~continuations:
- [ Tactics.apply prhs ;
- Tactics.apply (Cic.Rel 1) ;
- just]
- ]) status)
- | Some lhs ->
- match conclude with
- None -> ProofEngineTypes.apply_tactic just status
- | Some name ->
+ let plhs,prhs,prepare =
+ match lhs with
+ None ->
+ let plhs,prhs =
+ match gty with
+ Cic.Appl [_;_;plhs;prhs] -> plhs,prhs
+ | _ -> assert false
+ in
+ plhs,prhs,
+ (fun continuation ->
+ ProofEngineTypes.apply_tactic continuation status)
+ | Some (None,lhs) ->
+ let plhs,prhs =
+ match gty with
+ Cic.Appl [_;_;plhs;prhs] -> plhs,prhs
+ | _ -> assert false
+ in
+ (*CSC: manca check plhs convertibile con lhs *)
+ plhs,prhs,
+ (fun continuation ->
+ ProofEngineTypes.apply_tactic continuation status)
+ | Some (Some name,lhs) ->
+ let newmeta = CicMkImplicit.new_meta metasenv [] in
+ let irl =
+ CicMkImplicit.identity_relocation_list_for_metavariable context in
+ let plhs = lhs in
+ let prhs = Cic.Meta(newmeta,irl) in
+ plhs,prhs,
+ (fun continuation ->
+ let metasenv = (newmeta, context, ty)::metasenv in