Commit | Line | Data |
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7f918cf1 CE |
1 | (* Copyright (C) 1999-2006 Henry Cejtin, Matthew Fluet, Suresh |
2 | * Jagannathan, and Stephen Weeks. | |
3 | * | |
4 | * MLton is released under a BSD-style license. | |
5 | * See the file MLton-LICENSE for details. | |
6 | *) | |
7 | ||
8 | signature TYPE = | |
9 | sig | |
10 | datatype set = | |
11 | EmptySet | |
12 | | Set of elt | |
13 | and elt = | |
14 | Base | |
15 | | Pair of elt * elt | |
16 | | EltSet of set | |
17 | ||
18 | exception Incompatible | |
19 | ||
20 | structure Set : | |
21 | sig | |
22 | type t sharing type t = set | |
23 | val combine: t * t -> t | |
24 | val areCompatible: t * t -> bool | |
25 | end | |
26 | ||
27 | structure Elt : | |
28 | sig | |
29 | type t sharing type t = elt | |
30 | val combine: t * t -> t | |
31 | val areCompatible: t * t -> bool | |
32 | end | |
33 | ||
34 | val combineSetElt: set * elt -> set | |
35 | val areCompatibleSetElt: set * elt -> bool | |
36 | end |