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Better error messages for `for-all'.

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svn: r16075
This commit is contained in:
Mike Sperber 2009-09-19 17:55:59 +00:00
parent 4c70a14d7e
commit 65119301e6
1 changed files with 15 additions and 6 deletions
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21
collects/deinprogramm/DMdA.ss
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@ -970,20 +970,29 @@
(define-syntax (for-all stx)
(syntax-case stx ()
((_ ((?id ?arb) ...) ?body)
((_ (?clause ...) ?body)
(with-syntax ((((?id ?arb) ...)
;; #### check errors, idness
(map (lambda (pr)
(syntax-case pr ()
((?id ?contract)
(identifier? #'?id)
(with-syntax ((?error-call
(syntax/loc #'?contract (error "Vertrag hat keinen Generator"))))
#'(?id
(or (contract-arbitrary (contract ?contract))
?error-call))))))
(syntax->list #'((?id ?arb) ...)))))
?error-call))))
(_
(raise-syntax-error #f "inkorrekte `for-all'-Klausel - sollte die Form (id contr) haben"
pr))))
(syntax->list #'(?clause ...)))))
#'(quickcheck:property
((?id ?arb) ...) ?body)))))
((?id ?arb) ...) ?body)))
((_ ?something ?body)
(raise-syntax-error #f "keine Klauseln der Form (id contr)"
stx))
((_ ?thing1 ?thing2 ?thing3 ?things ...)
(raise-syntax-error #f "zuviele Operanden"
stx))))
(define-syntax (check-property stx)
(unless (memq (syntax-local-context) '(module top-level))
@ -996,7 +1005,7 @@
'comes-from-check-property)
'stepper-skip-completely
#t))
(_ (raise-syntax-error 'check-expect "`check-property' erwartet einen einzelnen Operanden"
(_ (raise-syntax-error #f "`check-property' erwartet einen einzelnen Operanden"
stx))))
(define (check-property-error test src-info test-info)