From e7c797f3481a35905a5861059294815b2210f889 Mon Sep 17 00:00:00 2001 From: Mathieu Othacehe Date: Fri, 24 Mar 2017 11:00:13 +0100 Subject: services: Factorize define-maybe macro. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * gnu/services/configuration.scm (id): New procedure extracted from define-configuration. (define-maybe): New exported procedure, moved from messaging.scm. * gnu/services/messaging.scm (define-maybe): Remove it. (id): Move declaration inside define-all-configurations which is now the only caller procedure. Signed-off-by: Clément Lassieur --- gnu/services/messaging.scm | 23 ++++------------------- 1 file changed, 4 insertions(+), 19 deletions(-) (limited to 'gnu/services/messaging.scm') diff --git a/gnu/services/messaging.scm b/gnu/services/messaging.scm index 34723dc11c..715d6181f5 100644 --- a/gnu/services/messaging.scm +++ b/gnu/services/messaging.scm @@ -1,5 +1,6 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2017 Clément Lassieur +;;; Copyright © 2017 Mathieu Othacehe ;;; ;;; This file is part of GNU Guix. ;;; @@ -49,27 +50,11 @@ ;;; ;;; Code: -(define-syntax-rule (id ctx parts ...) - "Assemble PARTS into a raw (unhygienic) identifier." - (datum->syntax ctx (symbol-append (syntax->datum parts) ...))) - -(define-syntax define-maybe - (lambda (x) - (syntax-case x () - ((_ stem) - (with-syntax - ((stem? (id #'stem #'stem #'?)) - (maybe-stem? (id #'stem #'maybe- #'stem #'?)) - (serialize-stem (id #'stem #'serialize- #'stem)) - (serialize-maybe-stem (id #'stem #'serialize-maybe- #'stem))) - #'(begin - (define (maybe-stem? val) - (or (eq? val 'disabled) (stem? val))) - (define (serialize-maybe-stem field-name val) - (when (stem? val) (serialize-stem field-name val))))))))) - (define-syntax define-all-configurations (lambda (stx) + (define-syntax-rule (id ctx parts ...) + "Assemble PARTS into a raw (unhygienic) identifier." + (datum->syntax ctx (symbol-append (syntax->datum parts) ...))) (define (make-pred arg) (lambda (field target) (and (memq (syntax->datum target) `(common ,arg)) field))) -- cgit v1.2.3