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;;; utils.scm -- helper procedures
;;; Copyright © 2012, 2013, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;;
;;; This file is part of Cuirass.
;;;
;;; Cuirass is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Cuirass is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Cuirass. If not, see <http://www.gnu.org/licenses/>.
(define-module (cuirass utils)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (json)
#:export (alist?
object->json-scm
object->json-string))
(define (alist? obj)
"Return #t if OBJ is an alist."
(and (list? obj)
(every pair? obj)))
(define (object->json-scm obj)
"Prepare OBJ for JSON usage."
(cond ((string? obj) obj)
((number? obj) obj)
((boolean? obj) obj)
((null? obj) obj)
((symbol? obj) (symbol->string obj))
((keyword? obj) (object->json-scm (keyword->symbol obj)))
((alist? obj) (map object->json-scm obj))
((pair? obj) (cons (object->json-scm (car obj))
(object->json-scm (cdr obj))))
(else (object->string obj))))
(define* (object->json-string object #:key pretty)
"Return OBJECT as a JSON object."
(scm->json-string (object->json-scm object) #:pretty pretty))
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