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;; utils.scm -- utility functions
;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
;; Start date: Mon Mar 02, 2009 01:48
;; This file 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.
;; This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Comentary:
;; Some utilities used by other modules.
;;; Code:
(define-module (geiser utils)
#:export (make-location
symbol->object
pair->list
sort-symbols!))
(define (symbol->object sym)
(and (symbol? sym)
(module-defined? (current-module) sym)
(module-ref (current-module) sym)))
(define (pair->list pair)
(let loop ((d pair) (s '()))
(cond ((null? d) (reverse! s))
((symbol? d) (reverse! (cons d s)))
(else (loop (cdr d) (cons (car d) s))))))
(define (make-location file line)
(list (cons 'file (if (string? file) file '()))
(cons 'line (if (number? line) (+ 1 line) '()))))
(define (sort-symbols! syms)
(let ((cmp (lambda (l r)
(string<? (symbol->string l) (symbol->string r)))))
(sort! syms cmp)))
;;; utils.scm ends here
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