gash/gash/compat/srfi-43.scm

42 lines
1.4 KiB
Scheme

;;; Gash -- Guile As SHell
;;; Copyright © 2019 Timothy Sample <samplet@ngyro.com>
;;;
;;; This file is part of Gash.
;;;
;;; Gash 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.
;;;
;;; Gash 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 Gash. If not, see <http://www.gnu.org/licenses/>.
(define-module (gash compat srfi-43)
#:use-module (gash compat))
;;; Commentary:
;;;
;;; The '(srfi srfi-43)' module was introduced into Guile in version
;;; 2.0.10, so we provide a shim.
;;;
;;; Code:
(if-guile-version-below (2 0 10)
(begin
(define-public (vector-empty? vec)
(zero? (vector-length vec)))
;; We only need the single vector version.
(define-public (vector-every pred? vec)
(let loop ((i 0) (value #t))
(if (< i (vector-length vec))
(and value (loop (1+ i) (pred? (vector-ref vec i))))
value))))
(begin
(use-modules (srfi srfi-43))
(re-export vector-empty? vector-every)))