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Avoid circular dependency between (rnrs base) and (rnrs exceptions).

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* module/rnrs/base.scm (raise): Define as a macro instead of a
  procedure.
This commit is contained in:
Ludovic Courtès 2011-02-02 16:17:48 +01:00
parent c62da8f891
commit b8fff11ed9
1 changed files with 7 additions and 2 deletions
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9
module/rnrs/base.scm
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@ -123,8 +123,13 @@
(define (vector-map proc . vecs)
(list->vector (apply map (cons proc (map vector->list vecs)))))
(define raise
(@ (rnrs exceptions) raise))
(define-syntax raise
;; Resolve the real `raise' lazily to avoid a circular dependency
;; between `(rnrs base)' and `(rnrs exceptions)'.
(syntax-rules ()
((_ c)
((@ (rnrs exceptions) raise) c))))
(define condition
(@ (rnrs conditions) condition))
(define make-error