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From: Damien Mattei <damien.mattei@gmail.com>
To: guile-user <guile-user@gnu.org>
Subject: for with break and continue
Date: Sun, 4 Sep 2022 11:54:00 +0200	[thread overview]
Message-ID: <CADEOadf3qBUbRgC4W1YDKFRWhFhR52vg5f2ZUh5Vqv-TfeehcA@mail.gmail.com> (raw)

i try to make a for with break and continue the way C language do it, i
works with break but if i add a continue feature i then loose the break
feature, here is my code:
(define-syntax for/bc

  (lambda (stx)
    (syntax-case stx ()
      ((kwd (init test incrmt) body ...)

       (with-syntax
((BREAK (datum->syntax #'kwd 'break)))

#'(call/cc
  (lambda (escape)
    (let-syntax
((BREAK (identifier-syntax (escape))))
      init
      (let loop ()
(when test

      (with-syntax
((CONTINUE (datum->syntax #'kwd 'continue)))

#'(call/cc
 (lambda (next)
   (let-syntax
((CONTINUE (identifier-syntax (next))))
     body ...)))

      incrmt
      (loop))))))))))))

Damien


             reply	other threads:[~2022-09-04  9:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-04  9:54 Damien Mattei [this message]
2022-09-04 10:43 ` for with break and continue Jean Abou Samra
2022-09-04 12:00   ` Damien Mattei
2022-09-04 12:40     ` Jean Abou Samra
2022-09-04 14:41       ` Damien Mattei
2022-09-05  0:42         ` Jean Abou Samra
2022-09-05  8:46           ` Damien Mattei

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