1: \ Simple debugging aids
3: \ Copyright (C) 1995,1997,1999 Free Software Foundation, Inc.
5: \ This file is part of Gforth.
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
22: \ They are meant to support a different style of debugging than the
23: \ tracing/stepping debuggers used in languages with long turn-around
24: \ times.
26: \ IMO, a much better (faster) way in fast-compilig languages is to add
27: \ printing code at well-selected places, let the program run, look at
28: \ the output, see where things went wrong, add more printing code, etc.,
29: \ until the bug is found.
31: \ We support fast insertion and removal of the printing code.
33: \ !!Warning: the default debugging actions will destroy the contents
34: \ of the pictured numeric output string (i.e., don't use ~~ between <#
35: \ and #>).
37: require source.fs
39: defer printdebugdata ( -- ) \ gforth print-debug-data
40: ' .s IS printdebugdata
41: defer .debugline ( nfile nline -- ) \ gforth print-debug-line
43: : (.debugline) ( nfile nline -- )
44: cr .sourcepos ." :"
45: \ it would be nice to print the name of the following word,
46: \ but that's not easily possible for primitives
48: cr ;
50: ' (.debugline) IS .debugline
52: : ~~ ( compilation -- ; run-time -- ) \ gforth tilde-tilde
53: compile-sourcepos POSTPONE .debugline ; immediate