(************ Pretty-printing ************************************)
-let rec string_of_term l =
- let rec string_of_term_w_pars l = function
- | `Var(n,ar) -> print_name l n ^ ":" ^ string_of_int ar
+(* let rec string_of_term l = fun _ -> "";; *)
+
+let rec string_of_term l =
+ let rec string_of_term_w_pars l = function
+ | `Var(n,ar) -> List.nth l n ^ (if debug_display_arities then ":" ^ string_of_int ar else "")
| `N n -> string_of_int n
| `I _ as t -> "(" ^ string_of_term_no_pars_app l (t :> nf) ^ ")"
| `Lam _ as t -> "(" ^ string_of_term_no_pars_lam l t ^ ")"
| `Match(t,(v,ar),bs_lift,bs,args) ->
- "["^ string_of_var v ^ (if debug_display_arities then ":"^ string_of_int ar else "") ^",match " ^ string_of_term_no_pars l (t :> nf) ^
+ "["^ List.nth l v ^ (if debug_display_arities then ":"^ string_of_int ar else "") ^",match " ^ string_of_term_no_pars l (t :> nf) ^
" with " ^ String.concat " | " (List.map (fun (n,t) -> string_of_int n ^ " => " ^ string_of_term l (lift bs_lift (t :> nf))) !bs) ^ "] " ^
String.concat " " (List.map (string_of_term l) (args :> nf list)) ^ ")"
and string_of_term_no_pars_app l = function
- | `I((n,ar), args) -> print_name l n ^ (if debug_display_arities then ":" ^ string_of_int ar else "") ^ " " ^ String.concat " " (List.map (string_of_term_w_pars l) (Listx.to_list args :> nf list))
+ | `I((n,ar), args) -> List.nth l n ^ (if debug_display_arities then ":" ^ string_of_int ar else "") ^ " " ^ String.concat " " (List.map (string_of_term_w_pars l) (Listx.to_list args :> nf list))
| #nf as t -> string_of_term_w_pars l t
and string_of_term_no_pars_lam l = function
- | `Lam(_,t) -> let name = string_of_var (List.length l) in
+ | `Lam(_,t) -> let name = "x" ^ string_of_int (List.length l) in
"λ" ^ name ^ ". " ^ (string_of_term_no_pars_lam (name::l) t)
| _ as t -> string_of_term_no_pars l t
and string_of_term_no_pars l : nf -> string = function
assert false (* algorithm failed *)
let rec set_arity arity = function
+(* FIXME because onlt variables should be in branches of matches, one day *)
| `Var(n,_) -> `Var(n,arity)
| `N _ as t -> t
| `Lam(false, t) -> `Lam(false, set_arity arity t)
aux 0 where
;;
-(************ Parsing ************************************)
-
-let parse' strs =
- let fix_arity = function
- | `I((n,_),args) -> `I((n,1+Listx.length args),args)
- | _ -> assert false in
- let rec aux = function
- | Parser.Lam t -> `Lam (true, aux t)
- | Parser.App (t1, t2) -> fix_arity (mk_app (aux t1) (aux t2))
- | Parser.Var v -> `Var(v,1) in
- let (tms, free) = Parser.parse_many strs in
- List.map aux tms, free
-;;
-
(************** Algorithm(s) ************************)
let eta_compare x y =