For Scott's encoding, two.
*)
let num_more_args = 2;;
+(* verbosity *)
let _very_verbose = false;;
+(** Display measure of every term when printing problem *)
+let _measure_of_terms = false;;
let verbose s =
if _very_verbose then prerr_endline s
let string_of_measure = string_of_int;;
let string_of_problem label ({freshno; div; conv; ps; deltas} as p) =
+ let aux_measure_terms t = if _measure_of_terms then "(" ^ string_of_int (measure_of_term t) ^ ") " else "" in
let deltas = String.concat ("\n# ") (List.map (fun r -> String.concat " <> " (List.map (fun (i,_) -> string_of_int i) !r)) deltas) in
let l = p.var_names in
String.concat "\n" ([
) else "# ";
"#";
"$" ^ p.label;
- (match div with None -> "# no D" | Some div -> "D ("^string_of_int (measure_of_term div)^")"^ print ~l (div :> nf));
+ (match div with None -> "# D" | Some div -> "D " ^ aux_measure_terms div ^ print ~l (div :> nf));
]
- @ List.map (fun t -> if t = convergent_dummy then "#C" else "C ("^string_of_int (measure_of_term t)^") " ^ print ~l (t :> nf)) conv
- @ List.mapi (fun i t -> string_of_int i ^ " ("^string_of_int (measure_of_term t)^") " ^ print ~l (t :> nf)) ps
+ @ List.map (fun t -> if t = convergent_dummy then "# C" else "C " ^ aux_measure_terms t ^ print ~l (t :> nf)) conv
+ @ List.mapi (fun i t -> string_of_int i ^ " " ^ aux_measure_terms t ^ print ~l (t :> nf)) ps
@ [""])
;;
) xs)
;;
+(** Returns (p, showstoppers_step, showstoppers_eat) where:
+ - showstoppers_step are the heads occurring twice
+ in the same discriminating set
+ - showstoppers_eat are the heads in ps having different number
+ of arguments *)
let critical_showstoppers p =
let p = super_simplify p in
let hd_of_div = match p.div with None -> [] | Some t -> [hd_of_i_var t] in
let showstoppers = showstoppers_step @ showstoppers_eat in
let heads = List.sort compare (filter_map hd_of ps) in
let arities = precompute_edible_data p (uniq heads) in
- let showstoppers, showstoppers_conv = edible p arities showstoppers in
- let l = List.filter (fun (_,hd,_) -> not (List.mem hd showstoppers)) arities in
+ let inedible, showstoppers_conv = edible p arities showstoppers in
+ let l = List.filter (fun (_,hd,_) -> not (List.mem hd inedible)) arities in
let p =
List.fold_left (fun p (pos,hd,nargs) -> if pos = -1 then p else
- let v = `N(pos) in
+ let v = `N pos in
let inst = make_lams v nargs in
prerr_endline ("# INST_IN_EAT: " ^ string_of_var p.var_names hd ^ " := " ^ string_of_term p inst);
{ p with sigma = p.sigma @ [hd,inst] }
let p = match p.div with
| None -> p
| Some div ->
- if List.mem (hd_of_i_var div) showstoppers
+ if List.mem (hd_of_i_var div) inedible
then p
else
let n = match div with `I(_,args) -> Listx.length args | `Var _ -> 0 in
(* subst_in_problem (hd_of_i_var div) inst p in *)
{p with sigma=p.sigma@[x,inst]} in
let dangerous_conv = showstoppers_conv in
-let _ = prerr_endline ("dangerous_conv lenght:" ^ string_of_int (List.length dangerous_conv));
-List.iter (fun l -> prerr_endline (String.concat " " (List.map (string_of_var p.var_names) l))) dangerous_conv; in
+prerr_endline ("dangerous_conv lenght:" ^ string_of_int (List.length dangerous_conv));
+List.iter (fun l -> prerr_endline (String.concat " " (List.map (string_of_var p.var_names) l))) dangerous_conv;
let conv =
List.map (function s,t ->
try
if s <> [] then t else (
(match t with | `Var _ -> raise Not_found | _ -> ());
- let _ = List.find (fun h -> hd_of t = Some h) showstoppers in
+ let _ = List.find (fun h -> hd_of t = Some h) inedible in
t)
with Not_found -> match hd_of t with
| None -> assert (t = convergent_dummy); t
List.fold_left max 0 (List.map (aux 0) ((t :> nf)::args@List.map snd !bs))
| `N _
| `Var _ -> 0
- ) in Listx.max (Listx.map (aux 0) tms)
+ ) in
+ let rec aux' top t = match t with
+ | `Lam(_,t) -> aux' false t
+ | `I((_,ar), tms) -> max ar
+ (Listx.max (Listx.map (aux' false) (tms :> nf Listx.listx)))
+ | `Match(t, _, liftno, bs, args) ->
+ List.fold_left max 0 (List.map (aux' false) ((t :> nf)::(args :> nf list)@List.map snd !bs))
+ | `N _
+ | `Var _ -> 0 in
+ Listx.max (Listx.map (aux 0) tms) + Listx.max (Listx.map (aux' true) tms)
;;
let auto_instantiate (n,p) =
| x::_, _ ->
prerr_endline ("INSTANTIATING " ^ string_of_var p.var_names x);
x in
-(* Strategy that decreases the special_k to 0 first (round robin)
-1:11m42 2:14m5 3:11m16s 4:14m46s 5:12m7s 6:6m31s *)
- let x =
- try
- match
- hd_of (List.find (fun t ->
- compute_special_k (Listx.Nil (t :> nf)) > 0 && arity_of_hd t > 0
- ) (all_terms p))
- with
- | None -> assert false
- | Some x ->
- prerr_endline ("INSTANTIATING AND HOPING " ^ string_of_var p.var_names x);
- x
- with
- Not_found ->
- let arity_of_x = max_arity_tms x (all_terms p) in
- assert (Util.option_get arity_of_x > 0);
- x in
-(* Instantiate in decreasing order of compute_special_k
-1:15m14s 2:13m14s 3:4m55s 4:4m43s 5:4m34s 6:6m28s 7:3m31s
-let x =
- try
- (match hd_of (snd (List.hd (List.sort (fun c1 c2 -> - compare (fst c1) (fst c2)) (filter_map (function `I _ as t -> Some (compute_special_k (Listx.Nil (t :> nf)),t) | _ -> None) (all_terms p))))) with
- None -> assert false
- | Some x ->
- prerr_endline ("INSTANTIATING AND HOPING " ^ string_of_var x);
- x)
- with
- Not_found -> x
-in*)
let special_k =
compute_special_k (Listx.from_list (all_terms p :> nf list) )in
if special_k < n then
e,Pure.lift (-n-1) (snd (List.find (fun (i,_) -> i = n) sigma)),[]
with
Not_found ->
- if should_explode && n = hd_of_i_var (cast_to_i_var !bomb)
- then ([], (let f t = Pure.A(t,t) in f (Pure.L (f (Pure.V 0)))), [])
- else ([],Pure.V n,[]))::e
+ if n = hd_of_i_var (cast_to_i_var !bomb)
+ then ([], Pure.omega should_explode, [])
+ else ([], Pure.V n, []) ) :: e
in aux 0
;;
(* ************************************************************************** *)
let ps = List.map scott_of_nf p.ps in
let sigma' = List.map (fun (x,inst) -> x, scott_of_nf inst) sigma in
- let e' = env_of_sigma freshno sigma' false (* FIXME shoudl_explode *) in
+ let e' = env_of_sigma freshno sigma' false in
+ let e'' = env_of_sigma freshno sigma' true in
prerr_endline "--------<REDUCE>---------";
- let pure_bomb = ToScott.t_of_nf (!bomb) in (* Pure.B *)
(function
| Some div ->
print_endline (Pure.print div);
let t = Pure.mwhd (e',div,[]) in
prerr_endline ("*:: " ^ (Pure.print t));
- assert (t = pure_bomb)
+ assert (Pure.diverged t)
| None -> ()) div;
List.iter (fun n ->
verbose ("_::: " ^ (Pure.print n));
- let t = Pure.mwhd (e',n,[]) in
+ let t = Pure.mwhd (e'',n,[]) in
verbose ("_:: " ^ (Pure.print t));
- assert (t <> pure_bomb)
+ assert (not (Pure.diverged t))
) conv ;
List.iteri (fun i n ->
verbose ((string_of_int i) ^ "::: " ^ (Pure.print n));
projects / fireball-separation.git / blobdiff