1 ;;; riece-debug.el --- debug support
2 ;; Copyright (C) 1998-2005 Daiki Ueno
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
6 ;; Keywords: IRC, riece
8 ;; This file is part of Riece.
10 ;; This program is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
27 (require 'riece-globals)
28 (require 'riece-options)
30 (defun riece-debug (message &optional detail)
31 "Print a one-line debug MESSAGE at the bottom of the frame.
32 If the optional 2nd argument DETAIL is specified, it is stored into
33 `riece-debug-buffer'."
34 (message "riece-debug: %s" message)
36 (set-buffer riece-debug-buffer)
37 (goto-char (point-max))
38 (let ((point (point)))
40 (insert message "\n" detail "\n")
41 (insert message "\n")))))
43 (defun riece-debug-reset-standard-output ()
44 "Reset `riece-temp-buffer' to be used as `standard-output'."
46 (set-buffer riece-temp-buffer)
50 (defmacro riece-debug-with-backtrace (&rest body)
51 "Execute BODY and send a backtrace to `riece-temp-buffer'."
54 (riece-debug-reset-standard-output)
55 (let ((standard-output riece-temp-buffer))
58 (put 'riece-debug-with-backtrace 'lisp-indent-function 0)
59 (put 'riece-debug-with-backtrace 'edebug-form-spec '(form body))
61 (defmacro riece-ignore-errors (location &rest body)
62 "Execute BODY; if an error occurs, return nil.
63 Otherwise, return result of last FORM.
64 If `riece-debug' is non-nil and an error occurred, it sends a
65 backtrace to standard-output."
66 `(condition-case error
68 (riece-debug-with-backtrace ,@body)
73 (set-buffer riece-temp-buffer)
74 (goto-char (point-min))
75 (if (re-search-forward "^ signal(" nil t)
76 (delete-region (point-min) (match-beginning 0)))
77 (riece-debug (format "Error in `%s': %S" ,location error)
81 (put 'riece-ignore-errors 'lisp-indent-function 1)
82 (put 'riece-ignore-errors 'edebug-form-spec '(form body))
84 (defun riece-funcall-ignore-errors (location function &rest args)
85 "Call FUNCTION with ARGS; if an error occurs, return nil.
86 Otherwise, return result of the function.
87 If `riece-debug' is non-nil and an error occurred, it sends a
88 backtrace to standard-output."
89 (riece-ignore-errors location
90 (apply function args)))
92 (provide 'riece-debug)
94 ;;; riece-debug.el ends here