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services: configuration: Simplify normalize-extra-args.

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* gnu/services/configuration.scm
(define-configuration-helper, normalize-extra-args): Use #f instead of %unset-value.

Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
This commit is contained in:
Bruno Victal 2023-10-07 16:59:06 +01:00 committed by Maxim Cournoyer
parent e328a5f746
commit 1b29e5db8f
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GPG Key ID: 1260E46482E63562
1 changed files with 13 additions and 13 deletions
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gnu/services/configuration.scm
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@ -190,32 +190,32 @@ does not have a default value" field kind)))
(define (normalize-extra-args s)
"Extract and normalize arguments following @var{doc}."
(let loop ((s s)
(sanitizer* %unset-value)
(serializer* %unset-value))
(sanitizer* #f)
(serializer* #f))
(syntax-case s (sanitizer serializer empty-serializer)
(((sanitizer proc) tail ...)
(if (maybe-value-set? sanitizer*)
(syntax-violation 'sanitizer "duplicate entry"
#'proc)
(if sanitizer*
(syntax-violation 'sanitizer
"duplicate entry" #'proc)
(loop #'(tail ...) #'proc serializer*)))
(((serializer proc) tail ...)
(if (maybe-value-set? serializer*)
(syntax-violation 'serializer "duplicate or conflicting entry"
#'proc)
(if serializer*
(syntax-violation 'serializer
"duplicate or conflicting entry" #'proc)
(loop #'(tail ...) sanitizer* #'proc)))
((empty-serializer tail ...)
(if (maybe-value-set? serializer*)
(if serializer*
(syntax-violation 'empty-serializer
"duplicate or conflicting entry" #f)
(loop #'(tail ...) sanitizer* #'empty-serializer)))
(() ; stop condition
(values (list sanitizer* serializer*)))
((proc) ; TODO: deprecated, to be removed.
(null? (filter-map maybe-value-set? (list sanitizer* serializer*)))
(not (or sanitizer* serializer*))
(begin
(warning #f (G_ "specifying serializers after documentation is \
deprecated, use (serializer ~a) instead~%") (syntax->datum #'proc))
(values (list %unset-value #'proc)))))))
(values (list #f #'proc)))))))
(syntax-case syn ()
((_ stem (field field-type+def doc extra-args ...) ...)
@ -239,11 +239,11 @@ deprecated, use (serializer ~a) instead~%") (syntax->datum #'proc))
default-value))
#'((field-type def) ...)))
((field-sanitizer ...)
(map maybe-value #'(sanitizer* ...)))
#'(sanitizer* ...))
((field-serializer ...)
(map (lambda (type proc)
(and serialize?
(or (maybe-value proc)
(or proc
(if serializer-prefix
(id #'stem serializer-prefix #'serialize- type)
(id #'stem #'serialize- type)))))