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tests/gpgscm: Make exception value available. 

* tests/gpgscm/init.scm (throw): Hand exception value to the handler.
(catch): And bind it to *error*.
This commit is contained in:
Justus Winter 2016-02-22 16:36:12 +01:00
parent 2907381f4a
commit 3b100da9ad
1 changed files with 5 additions and 4 deletions
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9
tests/gpgscm/init.scm
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@ -542,8 +542,9 @@
; (if-something goes-wrong)
; (with-these calls))
;
; "Catch" establishes a scope spanning multiple call-frames
; until another "catch" is encountered.
; "Catch" establishes a scope spanning multiple call-frames until
; another "catch" is encountered. Within the recovery expression
; the thrown exception is bound to *error*.
;
; Exceptions are thrown with:
;
@ -566,13 +567,13 @@
(define (throw . x)
(if (more-handlers?)
(apply (pop-handler))
(apply (pop-handler) x)
(apply error x)))
(macro (catch form)
(let ((label (gensym)))
`(call/cc (lambda (exit)
(push-handler (lambda () (exit ,(cadr form))))
(push-handler (lambda (*error*) (exit ,(cadr form))))
(let ((,label (begin ,@(cddr form))))
(pop-handler)
,label)))))