diff options
| -rw-r--r-- | gnu/services/configuration.scm | 169 | ||||
| -rw-r--r-- | tests/services/configuration.scm | 28 |
2 files changed, 114 insertions, 83 deletions
diff --git a/gnu/services/configuration.scm b/gnu/services/configuration.scm index 0de350a4df..bdca33ed68 100644 --- a/gnu/services/configuration.scm +++ b/gnu/services/configuration.scm @@ -5,6 +5,7 @@ ;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz> ;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com> ;;; Copyright © 2021 Andrew Tropin <andrew@trop.in> +;;; Copyright © 2022 Maxime Devos <maximedevos@telenet.be> ;;; ;;; This file is part of GNU Guix. ;;; @@ -162,78 +163,90 @@ does not have a default value" field kind))) (define-syntax-rule (define-maybe/no-serialization stem) (define-maybe stem (no-serialization))) +(define (normalize-field-type+def s) + (syntax-case s () + ((field-type def) + (identifier? #'field-type) + (values #'(field-type def))) + ((field-type) + (identifier? #'field-type) + (values #'(field-type 'disabled))) + (field-type + (identifier? #'field-type) + (values #'(field-type 'disabled))))) + (define (define-configuration-helper serialize? serializer-prefix syn) (syntax-case syn () - ((_ stem (field (field-type def ...) doc custom-serializer ...) ...) - (with-syntax (((field-getter ...) - (map (lambda (field) - (id #'stem #'stem #'- field)) - #'(field ...))) - ((field-predicate ...) - (map (lambda (type) - (id #'stem type #'?)) - #'(field-type ...))) - ((field-default ...) - (map (match-lambda - ((field-type default-value) - default-value) - ((field-type) - ;; Quote `undefined' to prevent a possibly - ;; unbound warning. - (syntax 'undefined))) - #'((field-type def ...) ...))) - ((field-serializer ...) - (map (lambda (type custom-serializer) - (and serialize? - (match custom-serializer - ((serializer) - serializer) - (() - (if serializer-prefix - (id #'stem - serializer-prefix - #'serialize- type) - (id #'stem #'serialize- type)))))) - #'(field-type ...) - #'((custom-serializer ...) ...)))) - #`(begin - (define-record-type* #,(id #'stem #'< #'stem #'>) - #,(id #'stem #'% #'stem) - #,(id #'stem #'make- #'stem) - #,(id #'stem #'stem #'?) - (%location #,(id #'stem #'stem #'-location) - (default (and=> (current-source-location) - source-properties->location)) - (innate)) - #,@(map (lambda (name getter def) - (if (eq? (syntax->datum def) (quote 'undefined)) - #`(#,name #,getter) - #`(#,name #,getter (default #,def)))) - #'(field ...) - #'(field-getter ...) - #'(field-default ...))) - (define #,(id #'stem #'stem #'-fields) - (list (configuration-field - (name 'field) - (type 'field-type) - (getter field-getter) - (predicate field-predicate) - (serializer field-serializer) - (default-value-thunk - (lambda () - (display '#,(id #'stem #'% #'stem)) - (if (eq? (syntax->datum field-default) - 'undefined) - (configuration-no-default-value - '#,(id #'stem #'% #'stem) 'field) - field-default))) - (documentation doc)) - ...)) - (define-syntax-rule (stem arg (... ...)) - (let ((conf (#,(id #'stem #'% #'stem) arg (... ...)))) - (validate-configuration conf - #,(id #'stem #'stem #'-fields)) - conf))))))) + ((_ stem (field field-type+def doc custom-serializer ...) ...) + (with-syntax + ((((field-type def) ...) + (map normalize-field-type+def #'(field-type+def ...)))) + (with-syntax + (((field-getter ...) + (map (lambda (field) + (id #'stem #'stem #'- field)) + #'(field ...))) + ((field-predicate ...) + (map (lambda (type) + (id #'stem type #'?)) + #'(field-type ...))) + ((field-default ...) + (map (match-lambda + ((field-type default-value) + default-value)) + #'((field-type def) ...))) + ((field-serializer ...) + (map (lambda (type custom-serializer) + (and serialize? + (match custom-serializer + ((serializer) + serializer) + (() + (if serializer-prefix + (id #'stem + serializer-prefix + #'serialize- type) + (id #'stem #'serialize- type)))))) + #'(field-type ...) + #'((custom-serializer ...) ...)))) + #`(begin + (define-record-type* #,(id #'stem #'< #'stem #'>) + #,(id #'stem #'% #'stem) + #,(id #'stem #'make- #'stem) + #,(id #'stem #'stem #'?) + (%location #,(id #'stem #'stem #'-location) + (default (and=> (current-source-location) + source-properties->location)) + (innate)) + #,@(map (lambda (name getter def) + (if (eq? (syntax->datum def) (quote 'undefined)) + #`(#,name #,getter) + #`(#,name #,getter (default #,def)))) + #'(field ...) + #'(field-getter ...) + #'(field-default ...))) + (define #,(id #'stem #'stem #'-fields) + (list (configuration-field + (name 'field) + (type 'field-type) + (getter field-getter) + (predicate field-predicate) + (serializer field-serializer) + (default-value-thunk + (lambda () + (display '#,(id #'stem #'% #'stem)) + (if (eq? (syntax->datum field-default) + 'undefined) + (configuration-no-default-value + '#,(id #'stem #'% #'stem) 'field) + field-default))) + (documentation doc)) + ...)) + (define-syntax-rule (stem arg (... ...)) + (let ((conf (#,(id #'stem #'% #'stem) arg (... ...)))) + (validate-configuration conf + #,(id #'stem #'stem #'-fields)) + conf)))))))) (define no-serialization ;syntactic keyword for 'define-configuration' '(no serialization)) @@ -241,26 +254,26 @@ does not have a default value" field kind))) (define-syntax define-configuration (lambda (s) (syntax-case s (no-serialization prefix) - ((_ stem (field (field-type def ...) doc custom-serializer ...) ... + ((_ stem (field field-type+def doc custom-serializer ...) ... (no-serialization)) (define-configuration-helper - #f #f #'(_ stem (field (field-type def ...) doc custom-serializer ...) + #f #f #'(_ stem (field field-type+def doc custom-serializer ...) ...))) - ((_ stem (field (field-type def ...) doc custom-serializer ...) ... + ((_ stem (field field-type+def doc custom-serializer ...) ... (prefix serializer-prefix)) (define-configuration-helper - #t #'serializer-prefix #'(_ stem (field (field-type def ...) + #t #'serializer-prefix #'(_ stem (field field-type+def doc custom-serializer ...) ...))) - ((_ stem (field (field-type def ...) doc custom-serializer ...) ...) + ((_ stem (field field-type+def doc custom-serializer ...) ...) (define-configuration-helper - #t #f #'(_ stem (field (field-type def ...) doc custom-serializer ...) + #t #f #'(_ stem (field field-type+def doc custom-serializer ...) ...)))))) (define-syntax-rule (define-configuration/no-serialization - stem (field (field-type def ...) + stem (field field-type+def doc custom-serializer ...) ...) - (define-configuration stem (field (field-type def ...) + (define-configuration stem (field field-type+def doc custom-serializer ...) ... (no-serialization))) diff --git a/tests/services/configuration.scm b/tests/services/configuration.scm index 86a36a388d..0debf8095b 100644 --- a/tests/services/configuration.scm +++ b/tests/services/configuration.scm @@ -27,6 +27,9 @@ (test-begin "services-configuration") +(define (serialize-number field value) + (format #f "~a=~a" field value)) + ;;; ;;; define-configuration macro. @@ -47,7 +50,6 @@ 80 (port-configuration-cs-port (port-configuration-cs))) -(define serialize-number "") (define-configuration port-configuration-ndv (port (number) "The port number.")) @@ -101,15 +103,31 @@ (define-maybe number) (define-configuration config-with-maybe-number - (port (maybe-number 80) "The port number.")) - -(define (serialize-number field value) - (format #f "~a=~a" field value)) + (port (maybe-number 80) "") + (count maybe-number "")) (test-equal "maybe value serialization" "port=80" (serialize-maybe-number "port" 80)) +(define (config-with-maybe-number->string x) + (eval (gexp->approximate-sexp + (serialize-configuration x config-with-maybe-number-fields)) + (current-module))) + +(test-equal "maybe value serialization of the instance" + "port=42count=43" + (config-with-maybe-number->string + (config-with-maybe-number + (port 42) + (count 43)))) + +(test-equal "maybe value serialization of the instance, unspecified" + "port=42" + (config-with-maybe-number->string + (config-with-maybe-number + (port 42)))) + (define-maybe/no-serialization string) (define-configuration config-with-maybe-string/no-serialization |