(use-modules (bytestructures guile)
             (bytestructure-class))
(define %wl-list-struct
  (bs:struct
   `((prev ,(bs:pointer (delay %wl-list-struct)))
     (next ,(bs:pointer (delay %wl-list-struct))))))
(define-bytestructure-class <wl-list> ()
  %wl-list-struct
  wrap-wl-list unwrap-wl-list wl-list?
  (prev #:accessor .prev)
  (next #:accessor .next))


(define %wl-signal-struct
  (bs:struct `((listener-list ,%wl-list-struct))))
(define-bytestructure-class <wl-signal> ()
  %wl-signal-struct wrap-wl-signal unwrap-wl-signal wl-signal?
  (listener-list #:accessor .listener-list))
;; (.listener-list (wrap-wl-signal a-pointer)) => return a <wl-list>.

4 new descriptor.

bs:unknow

use by descriptor only Can’t use bytestructure-set! for it.

struct wl_client;

(define %wl-client-struct (bs:unknow))

cstring-pointer*

(define bs (bytestructure cstring-pointer*))
(bytestructure-ref bs) ;; => #f
(bytestructure-set! bs "hhh")
(bytestructure-ref bs);; => "hhh"

bs:enum

(define enum (bs:enum '(A (B 2))))
(define enum-1 (bytestructure enum 'A))
(define enum-2 (bytestructure enum 2))
(bytestructure-ref enum-1) ;; => 'A
(bytestructure-ref enum-2) ;; => 'B
(bytestructure-set! enum-1 'B) ;; enum-1: 'B
(bytestructure-set! enum-2 0) ;; enum-2: 'A

stdbool

(define bool (bytestructure stdbool))
(bytestructure-ref bool) ;; => #f
(bytestructure-set! bool #t) ;; bool: #t
(bytestructure-ref bool) ;; => #t