-(* mk_fresh_name context name typ *)
-(* returns an identifier which is fresh in the context *)
-(* and that resembles [name] as much as possible. *)
-(* [typ] will be the type of the variable *)
-let mk_fresh_name context name ~typ =
- let module C = Cic in
- let basename =
- match name with
- C.Anonymous ->
- (*CSC: great space for improvements here *)
- (try
- (match CicTypeChecker.type_of_aux' [] context typ with
- C.Sort C.Prop -> "H"
- | C.Sort C.Set -> "x"
- | _ -> "H"
- )
- with CicTypeChecker.TypeCheckerFailure _ -> "H"
- )
- | C.Name name ->
- Str.global_replace (Str.regexp "[0-9]*$") "" name
- in
- let already_used name =
- List.exists (function Some (C.Name n,_) -> n=name | _ -> false) context
- in
- if not (already_used basename) then
- C.Name basename
- else
- let rec try_next n =
- let name' = basename ^ string_of_int n in
- if already_used name' then
- try_next (n+1)
- else
- C.Name name'
- in
- try_next 1
-;;
-
-(* identity_relocation_list_for_metavariable i canonical_context *)
-(* returns the identity relocation list, which is the list [1 ; ... ; n] *)
-(* where n = List.length [canonical_context] *)
-(*CSC: ma mi basta la lunghezza del contesto canonico!!!*)
-let identity_relocation_list_for_metavariable canonical_context =
- let canonical_context_length = List.length canonical_context in
- let rec aux =
- function
- (_,[]) -> []
- | (n,None::tl) -> None::(aux ((n+1),tl))
- | (n,_::tl) -> (Some (Cic.Rel n))::(aux ((n+1),tl))
- in
- aux (1,canonical_context)
-
-(* Returns the first meta whose number is above the *)
-(* number of the higher meta. *)
-let new_meta ~proof =
- let (_,metasenv,_,_) = proof in
- let rec aux =
- function
- None,[] -> 1
- | Some n,[] -> n
- | None,(n,_,_)::tl -> aux (Some n,tl)
- | Some m,(n,_,_)::tl -> if n > m then aux (Some n,tl) else aux (Some m,tl)
- in
- 1 + aux (None,metasenv)