diff options
Diffstat (limited to 'scheme/guile/geiser/introspection.scm')
| -rw-r--r-- | scheme/guile/geiser/introspection.scm | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/scheme/guile/geiser/introspection.scm b/scheme/guile/geiser/introspection.scm index c7b6de2..0a724f2 100644 --- a/scheme/guile/geiser/introspection.scm +++ b/scheme/guile/geiser/introspection.scm @@ -59,24 +59,30 @@ (cons 'position (find-position args form)) (cons 'module (symbol-module fun)))))) +(define (arglst args kind) + (let ((args (assq-ref args kind))) + (cond ((or (not args) (null? args)) '()) + ((list? args) args) + (else (list args))))) + (define (signature fun args) - (let ((req (assq-ref args 'required)) - (opt (assq-ref args 'optional)) - (key (assq-ref args 'keyword)) + (let ((req (arglst args 'required)) + (opt (arglst args 'optional)) + (key (arglst args 'keyword)) (rest (assq-ref args 'rest))) - (let ((sgn `(,fun ,@(or req '()) - ,@(if opt (cons #:optional opt) '()) - ,@(if key (cons #:key key) '())))) + (let ((sgn `(,fun ,@req + ,@(if (not (null? opt)) (cons #:opt opt) '()) + ,@(if (not (null? key)) (cons #:key key) '())))) (if rest `(,@sgn #:rest ,rest) sgn)))) (define (find-position args form) (let* ((lf (length form)) (lf-1 (- lf 1))) (if (= 1 lf) 0 - (let ((req (length (or (assq-ref args 'required) '()))) - (opt (length (or (assq-ref args 'optional) '()))) + (let ((req (length (arglst args 'required))) + (opt (length (arglst args 'optional))) (keys (map (lambda (k) (symbol->keyword (if (list? k) (car k) k))) - (or (assq-ref args 'keyword) '()))) + (arglst args 'keyword))) (rest (assq-ref args 'rest))) (cond ((<= lf (+ 1 req)) lf-1) ((<= lf (+ 1 req opt)) (if (> opt 0) lf lf-1)) |