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8746959c NJ |
1 | ;;;; (ice-9 debugging trc) -- tracing for Guile debugger code |
2 | ||
3 | ;;; Copyright (C) 2002, 2004 Free Software Foundation, Inc. | |
4 | ;;; | |
5 | ;; This library is free software; you can redistribute it and/or | |
6 | ;; modify it under the terms of the GNU Lesser General Public | |
7 | ;; License as published by the Free Software Foundation; either | |
8 | ;; version 2.1 of the License, or (at your option) any later version. | |
9 | ;; | |
10 | ;; This library is distributed in the hope that it will be useful, | |
11 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | ;; Lesser General Public License for more details. | |
14 | ;; | |
15 | ;; You should have received a copy of the GNU Lesser General Public | |
16 | ;; License along with this library; if not, write to the Free Software | |
17 | ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | ||
19 | (define-module (ice-9 debugging trc) | |
20 | #:export (trc trc-syms trc-all trc-none trc-add trc-remove trc-port)) | |
21 | ||
22 | (define *syms* #f) | |
23 | ||
24 | (define (trc-set! syms) | |
25 | (set! *syms* syms)) | |
26 | ||
27 | (define (trc-syms . syms) | |
28 | (trc-set! syms)) | |
29 | ||
30 | (define (trc-all) | |
31 | (trc-set! #f)) | |
32 | ||
33 | (define (trc-none) | |
34 | (trc-set! '())) | |
35 | ||
36 | (define (trc-add sym) | |
37 | (trc-set! (cons sym *syms*))) | |
38 | ||
39 | (define (trc-remove sym) | |
40 | (trc-set! (delq1! sym *syms*))) | |
41 | ||
42 | (define (trc sym . args) | |
43 | (if (or (not *syms*) | |
44 | (memq sym *syms*)) | |
45 | (let ((port (trc-port))) | |
46 | (write sym port) | |
47 | (display ":" port) | |
48 | (for-each (lambda (arg) | |
49 | (display " " port) | |
50 | (write arg port)) | |
51 | args) | |
52 | (newline port)))) | |
53 | ||
54 | (define trc-port | |
55 | (let ((port (current-error-port))) | |
56 | (make-procedure-with-setter | |
57 | (lambda () port) | |
58 | (lambda (p) (set! port p))))) | |
59 | ||
60 | ;; Default to no tracing. | |
61 | (trc-none) | |
62 | ||
63 | ;;; (ice-9 debugging trc) ends here. |