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;;; location.scm -- Skribilo source location.
;;;
;;; Copyright 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;; Copyright 2005 Ludovic Court�s <ludovic.courtes@laas.fr>
;;;
;;;
;;; This program 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 2 of the License, or
;;; (at your option) any later version.
;;;
;;; This program 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, write to the Free Software
;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
;;; USA.
(define-module (skribilo location)
:use-module (oop goops)
:use-module ((skribilo utils syntax) :select (%skribilo-module-reader))
:export (<location> location? ast-location
location-file location-line location-pos))
;;; Author: Ludovic Court�s
;;;
;;; Commentary:
;;;
;;; An abstract data type to keep track of source locations.
;;;
;;; Code:
(fluid-set! current-reader %skribilo-module-reader)
;;;
;;; Class definition.
;;;
(define-class <location> ()
(file :init-keyword :file :getter location-file)
(pos :init-keyword :pos :getter location-pos)
(line :init-keyword :line :getter location-line))
(define (location? obj)
(is-a? obj <location>))
(define (ast-location obj)
(let ((loc (slot-ref obj 'loc)))
(if (location? loc)
(let* ((fname (location-file loc))
(line (location-line loc))
(pwd (getcwd))
(len (string-length pwd))
(lenf (string-length fname))
(file (if (and (substring=? pwd fname len)
(> lenf len))
(substring fname len (+ 1 (string-length fname)))
fname)))
(format #f "~a, line ~a" file line))
"no source location")))
;;; arch-tag: d68fa45d-a200-465e-a3c2-eb2861907f83
;;; location.scm ends here.
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