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
|
(* sharing.sml *)
(* Checks treatment of sharing constraints. *)
signature S =
sig
type t
type s = t
sharing type t = s
end;
signature T = (* from SML/NJ doc *)
sig
type s
structure A :
sig
datatype d = D of s
datatype t = K
end
sharing type s = A.t
end;
(* Check that multiple sharing equations is all pairs. *)
signature S =
sig
structure T: sig end
structure U: sig type t = int end
sharing T = U
end
functor F (structure A: sig type t end
structure B: sig end
structure C: sig type t end
sharing A = B = C) =
struct
val _: A.t -> C.t = fn x => x
end
(* Check that sharing doesn't mistakenly share structures that only differ in
* free flexible tycons.
*)
signature T =
sig
type t
structure U:
sig
val x: t
end
end
structure S:
sig
structure T1: T
structure T2: T
sharing T1.U = T2.U
end =
struct
structure T1 =
struct
type t = int
structure U =
struct
val x = 13
end
end
structure T2 =
struct
type t = real
structure U =
struct
val x = 13.0
end
end
end
;
|
