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records: Report unknown field names in inheriting forms.

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* guix/records.scm (define-record-type*)[record-inheritance]: Check for
  unexpected field names.
* tests/records.scm ("define-record-type* with let* behavior"): Return
  #t, not *unspecified*.
  ("define-record-type* & inherit & extra initializers"): New test.
This commit is contained in:
Ludovic Courtès 2014-07-17 16:45:45 +02:00
parent b1353e7a6b
commit a1906758c3
2 changed files with 24 additions and 1 deletions
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8
guix/records.scm
View file

@ -69,6 +69,14 @@ (define (field-inherited-value f)
field+value)
car))
;; Make sure there are no unknown field names.
(let* ((fields (map (compose car syntax->datum)
field+value))
(unexpected (lset-difference eq? fields 'expected)))
(when (pair? unexpected)
(record-error 'name s "extraneous field initializers ~a"
unexpected)))
#`(make-struct type 0
#,@(map (lambda (field index)
(or (field-inherited-value field)

17
tests/records.scm
View file

@ -58,7 +58,7 @@ (define-record-type* <bar> bar make-bar
(match (bar (x 7) (z (* x 3)))
(($ <bar> 7 42 21)))
(match (bar (z 21) (x (/ z 3)))
(($ <bar> 7 42 21))))))
(($ <bar> 7 42 21) #t)))))
(test-assert "define-record-type* & inherit"
(begin
@ -171,6 +171,21 @@ (define-record-type* <foo> foo make-foo
(and (string-match "extra.*initializer.*baz" message)
(eq? proc 'foo)))))
(test-assert "define-record-type* & inherit & extra initializers"
(catch 'syntax-error
(lambda ()
(eval '(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar (default 42)))
(foo (inherit (foo)) (baz 'what?)))
(test-module))
#f)
(lambda (key proc message location form . args)
(and (string-match "extra.*initializer.*baz" message)
(eq? proc 'foo)))))
(test-equal "recutils->alist"
'((("Name" . "foo")
("Version" . "0.1")