blob: 0d39a5e0968923c23d6e92ff62760550068ef115 (
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
|
(defun normalize-enum-pairs (f enum-pairs)
(let ((n 0))
(keep-matches (@(or (@sym @init)
@(with @sym init n))
enum-pairs)
(unless (bindable sym)
(compile-error f "~s isn't a bindable symbol" sym))
(unless (or (integerp init) (chrp init))
(compile-error f "~s must be an integer or character" init))
(set n (succ init))
^(,sym ,init))))
(defmacro defenum (:form f . enum-pairs)
(let ((nep (normalize-enum-pairs f enum-pairs)))
^(progn ,*(mapcar (op cons 'defsymacro) nep))))
(defmacro enumlet (:form f enum-pairs . body)
(let ((nep (normalize-enum-pairs f enum-pairs)))
^(symacrolet ,nep ,*body)))
|