source: trunk/j/src/org/armedbear/lisp/debug.lisp @ 5012

Last change on this file since 5012 was 5012, checked in by piso, 18 years ago

Use SYS::%FORMAT instead of FORMAT.

File size: 1.7 KB
Line 
1;;; debug.lisp
2;;;
3;;; Copyright (C) 2003 Peter Graves
4;;; $Id: debug.lisp,v 1.10 2003-12-08 02:52:29 piso Exp $
5;;;
6;;; This program is free software; you can redistribute it and/or
7;;; modify it under the terms of the GNU General Public License
8;;; as published by the Free Software Foundation; either version 2
9;;; of the License, or (at your option) any later version.
10;;;
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;;; GNU General Public License for more details.
15;;;
16;;; You should have received a copy of the GNU General Public License
17;;; along with this program; if not, write to the Free Software
18;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19
20(in-package "SYSTEM")
21
22(defun debug-loop ()
23  (let ((tpl::*break-level* (1+ tpl::*break-level*)))
24  (fresh-line *debug-io*)
25  (%format *debug-io* "Type :CONTINUE to return from break or :RESET to return to top level.~%")
26    (loop
27      (catch 'debug-loop-catcher
28        (handler-case
29            (tpl::repl)
30          (error (c) (%format t "Error: ~S.~%" c) (break) (throw 'debug-loop-catcher nil)))))))
31
32(defun invoke-debugger (condition)
33  (when *debugger-hook*
34    (let ((hook-function *debugger-hook*)
35          (*debugger-hook* nil))
36      (funcall hook-function condition hook-function)))
37  (catch 'tpl::continue-catcher
38    (clear-input)
39    (debug-loop)))
40
41(defun break (&optional format-control &rest format-arguments)
42  (fresh-line *debug-io*)
43  (%format *debug-io* "BREAK called.~%")
44  (if format-control
45      (apply #'%format *debug-io* format-control format-arguments))
46  (invoke-debugger nil))
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