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| 1 : | anton | 1.1 | \ report stack depth changes in source code in various (optional) ways |
| 2 : | |||
| 3 : | anton | 1.3 | \ Copyright (C) 2004,2007 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 : | anton | 1.2 | \ as published by the Free Software Foundation, either version 3 |
| 10 : | anton | 1.1 | \ 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 : | anton | 1.2 | \ along with this program. If not, see http://www.gnu.org/licenses/. |
| 19 : | anton | 1.1 | |
| 20 : | |||
| 21 : | \ Use this program like this: | ||
| 22 : | \ include it, then the program you want to check | ||
| 23 : | \ e.g., start it with | ||
| 24 : | \ gforth depth-changes.fs myprog.fs | ||
| 25 : | |||
| 26 : | \ By default this will report stack depth changes at every empty line | ||
| 27 : | \ in interpret state. You can vary this by using | ||
| 28 : | |||
| 29 : | \ gforth depth-changes.fs -e "' <word> IS depth-changes-filter" myprog.fs | ||
| 30 : | |||
| 31 : | \ with the following values for <word>: | ||
| 32 : | |||
| 33 : | \ <word> meaning | ||
| 34 : | \ all-lines every line in interpret state | ||
| 35 : | \ most-lines every line in interpret state not ending with "\" | ||
| 36 : | |||
| 37 : | 2variable last-depths | ||
| 38 : | |||
| 39 : | defer depth-changes-filter ( -- f ) | ||
| 40 : | \G true if the line should be checked for depth changes | ||
| 41 : | |||
| 42 : | : all-lines ( -- f ) | ||
| 43 : | state @ 0= ; | ||
| 44 : | |||
| 45 : | : empty-lines ( -- f ) | ||
| 46 : | source (parse-white) nip 0= all-lines and ; | ||
| 47 : | |||
| 48 : | : most-lines ( -- f ) | ||
| 49 : | source dup if | ||
| 50 : | 1- chars + c@ '\ <> | ||
| 51 : | else | ||
| 52 : | 2drop true | ||
| 53 : | endif | ||
| 54 : | all-lines and ; | ||
| 55 : | |||
| 56 : | ' empty-lines is depth-changes-filter | ||
| 57 : | |||
| 58 : | : check-line ( -- ) | ||
| 59 : | depth-changes-filter if | ||
| 60 : | sp@ fp@ last-depths 2@ | ||
| 61 : | 2over last-depths 2! | ||
| 62 : | d<> if | ||
| 63 : | ['] ~~ execute | ||
| 64 : | endif | ||
| 65 : | endif ; | ||
| 66 : | |||
| 67 : | sp@ fp@ last-depths 2! | ||
| 68 : | |||
| 69 : | ' check-line is line-end-hook |
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