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| 1 : | anton | 1.1 | \ Simple debugging aids |
| 2 : | |||
| 3 : | anton | 1.3 | \ Copyright (C) 1995,1997 Free Software Foundation, Inc. |
| 4 : | anton | 1.1 | |
| 5 : | \ This file is part of Gforth. | ||
| 6 : | |||
| 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. | ||
| 11 : | |||
| 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. | ||
| 16 : | |||
| 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., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| 20 : | |||
| 21 : | |||
| 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. | ||
| 25 : | |||
| 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. | ||
| 30 : | |||
| 31 : | \ We support fast insertion and removal of the printing code. | ||
| 32 : | |||
| 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 #>). | ||
| 36 : | |||
| 37 : | require source.fs | ||
| 38 : | |||
| 39 : | defer printdebugdata ( -- ) \ gforth | ||
| 40 : | ' .s IS printdebugdata | ||
| 41 : | defer printdebugline ( addr -- ) \ gforth | ||
| 42 : | |||
| 43 : | : (printdebugline) ( addr -- ) | ||
| 44 : | cr print-sourcepos ." :" | ||
| 45 : | \ it would be nice to print the name of the following word, | ||
| 46 : | \ but that's not easily possible for primitives | ||
| 47 : | printdebugdata | ||
| 48 : | cr ; | ||
| 49 : | |||
| 50 : | ' (printdebugline) IS printdebugline | ||
| 51 : | |||
| 52 : | : (~~) ( -- ) | ||
| 53 : | r@ printdebugline | ||
| 54 : | anton | 1.2 | r> sourcepos %size + >r ; |
| 55 : | anton | 1.1 | |
| 56 : | : ~~ ( compilation -- ; run-time -- ) \ gforth tilde-tilde | ||
| 57 : | POSTPONE (~~) sourcepos, ; immediate | ||
| 58 : |
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