blob: b7a80679d9899964caec37bae7296aa59cca3fed (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
open ImpPrelude
exception Stop;;
let make_dict (type key) (p: key Dict.hash_params) =
let module MyHashedType = struct
type t = key
let equal = p.Dict.test_eq
let hash = p.Dict.hashing
end in
let module MyHashtbl = Hashtbl.Make(MyHashedType) in
let dict = MyHashtbl.create 1000 in
{
Dict.set = (fun (k,d) -> MyHashtbl.replace dict k d);
Dict.get = (fun k -> MyHashtbl.find_opt dict k)
}
let xhCons (type a) (hash_eq, error: (a -> a -> bool)*(a pre_hashV -> a hashV)) =
let module MyHashedType = struct
type t = a pre_hashV
let equal x y = hash_eq x.pre_data y.pre_data
let hash x = Hashtbl.hash x.hcodes
end in
let module MyHashtbl = Hashtbl.Make(MyHashedType) in
let pick t =
let res = ref None in
try
MyHashtbl.iter (fun k d -> res:=Some (k,d); raise Stop) t;
None
with
| Stop -> !res
in
let t = MyHashtbl.create 1000 in
let logs = ref [] in
{
hC = (fun (x:a pre_hashV) ->
match MyHashtbl.find_opt t x with
| Some x' -> x'
| None -> (*print_string "+";*)
let x' = { data = x.pre_data ;
hid = MyHashtbl.length t }
in MyHashtbl.add t x x'; x');
hC_known = (fun (x:a pre_hashV) ->
match MyHashtbl.find_opt t x with
| Some x' -> x'
| None -> error x);
next_log = (fun info -> logs := (MyHashtbl.length t, info)::(!logs));
export = fun () ->
match pick t with
| None -> { get_hashV = (fun _ -> raise Not_found); iterall = (fun _ -> ()) }
| Some (k,_) ->
(* the state is fully copied at export ! *)
let logs = ref (List.rev_append (!logs) []) in
let rec step_log i =
match !logs with
| (j, info)::l' when i>=j -> logs:=l'; info::(step_log i)
| _ -> []
in let a = Array.make (MyHashtbl.length t) k in
MyHashtbl.iter (fun k d -> a.(d.hid) <- k) t;
{
get_hashV = (fun i -> a.(i));
iterall = (fun iter_node -> Array.iteri (fun i k -> iter_node (step_log i) i k) a)
}
}
|
