blob: 660ffc44ec3e5ec26bb011747dbac3cd4bbf864c (
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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
module type TParam =
sig
type 'a t
end
module type S =
sig
type 'a tag
type t = Dyn : 'a tag * 'a -> t
val create : string -> 'a tag
val eq : 'a tag -> 'b tag -> ('a, 'b) CSig.eq option
val repr : 'a tag -> string
type any = Any : 'a tag -> any
val name : string -> any option
module Map(M : TParam) :
sig
type t
val empty : t
val add : 'a tag -> 'a M.t -> t -> t
val remove : 'a tag -> t -> t
val find : 'a tag -> t -> 'a M.t
val mem : 'a tag -> t -> bool
type any = Any : 'a tag * 'a M.t -> any
type map = { map : 'a. 'a tag -> 'a M.t -> 'a M.t }
val map : map -> t -> t
val iter : (any -> unit) -> t -> unit
val fold : (any -> 'r -> 'r) -> t -> 'r -> 'r
end
val dump : unit -> (int * string) list
end
module Make(M : CSig.EmptyS) =
struct
(* Dynamics, programmed with DANGER !!! *)
type 'a tag = int
type t = Dyn : 'a tag * 'a -> t
type any = Any : 'a tag -> any
let dyntab = ref (Int.Map.empty : string Int.Map.t)
(** Instead of working with tags as strings, which are costly, we use their
hash. We ensure unicity of the hash in the [create] function. If ever a
collision occurs, which is unlikely, it is sufficient to tweak the offending
dynamic tag. *)
let create (s : string) =
let hash = Hashtbl.hash s in
let () =
if Int.Map.mem hash !dyntab then
let old = Int.Map.find hash !dyntab in
let () = Printf.eprintf "Dynamic tag collision: %s vs. %s\n%!" s old in
assert false
in
let () = dyntab := Int.Map.add hash s !dyntab in
hash
let eq : 'a 'b. 'a tag -> 'b tag -> ('a, 'b) CSig.eq option =
fun h1 h2 -> if Int.equal h1 h2 then Some (Obj.magic CSig.Refl) else None
let repr s =
try Int.Map.find s !dyntab
with Not_found ->
let () = Printf.eprintf "Unknown dynamic tag %i\n%!" s in
assert false
let name s =
let hash = Hashtbl.hash s in
if Int.Map.mem hash !dyntab then Some (Any hash) else None
let dump () = Int.Map.bindings !dyntab
module Map(M : TParam) =
struct
type t = Obj.t M.t Int.Map.t
let cast : 'a M.t -> 'b M.t = Obj.magic
let empty = Int.Map.empty
let add tag v m = Int.Map.add tag (cast v) m
let remove tag m = Int.Map.remove tag m
let find tag m = cast (Int.Map.find tag m)
let mem = Int.Map.mem
type any = Any : 'a tag * 'a M.t -> any
type map = { map : 'a. 'a tag -> 'a M.t -> 'a M.t }
let map f m = Int.Map.mapi f.map m
let iter f m = Int.Map.iter (fun k v -> f (Any (k, v))) m
let fold f m accu = Int.Map.fold (fun k v accu -> f (Any (k, v)) accu) m accu
end
end
|
