blob: b61fbec80eab789944a7b489ebd416b0bee4aabe (
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
|
;; 2004-08-20 T14:53:35-0400 (Friday) D. Goel
;; This file is work in progress. INCOMLPETE AND BUGGY. DO NOT REQUIRE
;; THIS FILE IN A BOT.
(defvar backquote-symbols (list (intern (string 96)) 'backquote))
(defmacro backquote-parse (sexp)
"Will parse a sexp and return an equivalent sexp with no backquotes
in it. Any backquotes in the sexp are converted them to a
nonbackquoted form. "
(cond
((atom sexp) sexp)
(t (cons 'quote (backquote-parse-unread sexp)))))
(defun backquote-parse-unread (sexp)
(cond
;;;((vectorp sexp)
;;;(error "this backquote parse does not deal with vectors. "))
((null sexp)
nil)
((atom sexp)
sexp)
((equal (car sexp) 'quote)
(message "Answer is %s" sexp)
sexp)
((member (car sexp) backquote-symbols)
(backquote-inside-parse (cadr sexp)))
;; None of them:
(t (cons (backquote-parse-unread (car sexp))
(backquote-parse-unread (cdr sexp))))))
(defun backquote-inside-parse (sexp)
(cond
((null sexp)
nil)
((atom sexp)
(list 'quote sexp))
((equal (car sexp) ',)
`(eval ,(backquote-parse-unread (cadr sexp))))
(t (cons (backquote-inside-parse (car sexp))
(backquote-inside-parse (cdr sexp))))))
|
