diff options
Diffstat (limited to 'guix/records.scm')
| -rw-r--r-- | guix/records.scm | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/guix/records.scm b/guix/records.scm index e7b86af9aa..c833fdb339 100644 --- a/guix/records.scm +++ b/guix/records.scm @@ -78,7 +78,8 @@ It is possible to copy an object 'x' created with 'thing' like this: This expression returns a new object equal to 'x' except for its 'name' field." - (define (make-syntactic-constructor type name ctor fields thunked defaults) + (define* (make-syntactic-constructor type name ctor fields + #:key thunked defaults) "Make the syntactic constructor NAME for TYPE, that calls CTOR, and expects all of FIELDS to be initialized. DEFAULTS is the list of FIELD/DEFAULT-VALUE tuples, and THUNKED is the list of identifiers of @@ -219,7 +220,10 @@ thunked fields." (syntax-case s () ((_ type syntactic-ctor ctor pred (field get options ...) ...) - (let* ((field-spec #'((field get options ...) ...))) + (let* ((field-spec #'((field get options ...) ...)) + (thunked (filter-map thunked-field? field-spec)) + (defaults (filter-map field-default-value + #'((field options ...) ...)))) (with-syntax (((field-spec* ...) (map field-spec->srfi-9 field-spec)) ((thunked-field-accessor ...) @@ -236,10 +240,8 @@ thunked fields." (begin thunked-field-accessor ...) #,(make-syntactic-constructor #'type #'syntactic-ctor #'ctor #'(field ...) - (filter-map thunked-field? field-spec) - (filter-map field-default-value - #'((field options ...) - ...)))))))))) + #:thunked thunked + #:defaults defaults)))))))) (define* (alist->record alist make keys #:optional (multiple-value-keys '())) |