Scheme procedure - list->hook lst
Convert the procedure list of LST to a hook.
It will compliment the hook->list procedure already there. :)
I found the hook->list procedure in C but I cannot find a good place to add
list->hook.
Thoughts?
Cheers,
amar<n...@disroot.org>
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;;; Full procedure
(define (list->hook lst)
"Convert the procedure list of LST to a hook."
(define (adder h lst arity)
(if (null? lst) h
(let ((proc (car lst)))
(if (procedure? proc)
(if (equal? arity (car (procedure-minimum-arity proc)))
(begin (add-hook! h proc #t)
(adder h (cdr lst) arity))
(error (format #f "In procedure list->hook: Wrong number of
arguments to ~s, expected arity ~s" proc arity)))
(error (format #f "In procedure list->hook: Wrong type argument
~s, expecting a procedure." proc))))))
(if (null? lst) (make-hook)
(let ((proc (car lst)))
(if (procedure? proc)
(let* ((arity (car (procedure-minimum-arity proc)))
(hook (make-hook arity)))
(adder hook lst arity))
(error (format #f "In procedure list->hook: Wrong type argument: ~s
in list, expected a procedure." proc))))))
