schleifen

 1(import (chicken irregex)
 2        (chicken process-context)
 3        srfi-1)
 4
 5(include "parser.scm")
 6(include "interpreter.scm")
 7
 8(define (die msg)
 9  (let ((port (current-error-port)))
10    (display msg port)
11    (newline port)
12    (exit 1)))
13
14(define (dump-variable var)
15  (display (car var)) (display ": ")
16  (display (cdr var)) (newline))
17
18(define (string->variable str)
19  (let ((kv (irregex-split (irregex "=") str)))
20    (if (= (length kv) 2)
21        (cons (first kv) (string->number (second kv)))
22        (die (string-append "invalid assignment: " str)))))
23
24(define (initial-variables)
25  (let ((args (argv)))
26    (if (> (length args) 1)
27        (map string->variable (cdr args))
28        '())))
29
30(define (main)
31  (let ((prog (parse-loop-prog (current-input-port))))
32    (if prog
33        (let ((vars (eval-loop-prog (initial-variables) prog)))
34          (for-each dump-variable vars))
35        (die "input program is invalid"))))
36
37(cond-expand
38  ((or chicken-script compiling) (main))
39  (else #t))