1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
;; JACAL: Symbolic Mathematics System. -*-scheme-*-
;; Copyright 1989, 1990, 1991, 1992, 1993 Aubrey Jaffer.
;;
;; 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
;; Save our vicinity for finding non-scheme files.
(define jacal-vicinity (program-vicinity))
;; Load the core files.
(slib:load (in-vicinity (program-vicinity) "toploads"))
;; Initialize modes to something reasonable.
(slib:load (in-vicinity (program-vicinity) "modeinit"))
;;;; error and interrupt response for SCM.
;;; Put appropriate handlers for other systems here.
(define (impl:error str args)
(force-output)
(newline-diag)
(perror (tran:translate 'error))
(set-errno 0)
(display-diag str)
(display-diag (tran:translate 'last-expression-lost))
(newline-diag)
(display-diag args)
(newline-diag)
(force-output)
(math:exit #f)) ;return to math top level.
;;;; These are error handlers for SCM.
;;(define out-of-storage #f)
(define could-not-open #f)
(define arithmetic-error #f)
;;(define user-interrupt #f)
(define end-of-program #f)
;(define hang-up end-of-program) ;automatic
(define (set-handlers!)
;; (set! out-of-storage (lambda args (impl:error "Out of storage" args)))
(set! could-not-open (lambda args (impl:error "File not found" args)))
(set! arithmetic-error (lambda args (impl:error "Arithmetic Error" args)))
;; (set! user-interrupt (lambda args (impl:error "User Interrupt" args)))
(set! end-of-program (lambda args (math:exit #t))))
(define (cleanup-handlers!)
;; (set! out-of-storage #f)
(set! could-not-open #f)
(set! arithmetic-error #f)
;; (set! user-interrupt #f)
(set! end-of-program #f))
|
