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| 1 : | anton | 1.1 | \ require.fs |
| 2 : | |||
| 3 : | anton | 1.5 | \ Copyright (C) 1995,1996,1997,1998 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 : | \ Now: Kernel Module, Reloadable | ||
| 22 : | |||
| 23 : | create included-files 0 , 0 , ( pointer to and count of included files ) | ||
| 24 : | jwilke | 1.8 | \ here ," ./the terminal" dup c@ swap 1 + swap , A, here 2 cells - |
| 25 : | \ ./ is confusing for the search path stuff! There should be never a . | ||
| 26 : | \ in sourcefilename.... | ||
| 27 : | here ," #terminal#" dup c@ swap 1 + swap , A, here 2 cells - | ||
| 28 : | anton | 1.1 | create image-included-files 1 , A, ( pointer to and count of included files ) |
| 29 : | \ included-files points to ALLOCATEd space, while image-included-files | ||
| 30 : | \ points to ALLOTed objects, so it survives a save-system | ||
| 31 : | |||
| 32 : | crook | 1.9 | : loadfilename ( -- a-addr ) \ gforth |
| 33 : | \G @i{a-addr} @code{2@@} produces the current file name ( @i{c-addr u} ) | ||
| 34 : | anton | 1.1 | included-files 2@ loadfilename# @ min 2* cells + ; |
| 35 : | |||
| 36 : | : sourcefilename ( -- c-addr u ) \ gforth | ||
| 37 : | crook | 1.7 | \G The name of the source file which is currently the input |
| 38 : | anton | 1.1 | \G source. The result is valid only while the file is being |
| 39 : | \G loaded. If the current input source is no (stream) file, the | ||
| 40 : | \G result is undefined. | ||
| 41 : | loadfilename 2@ ; | ||
| 42 : | |||
| 43 : | : sourceline# ( -- u ) \ gforth sourceline-number | ||
| 44 : | crook | 1.7 | \G The line number of the line that is currently being interpreted |
| 45 : | anton | 1.1 | \G from a (stream) file. The first line has the number 1. If the |
| 46 : | crook | 1.7 | \G current input source is not a (stream) file, the result is |
| 47 : | anton | 1.1 | \G undefined. |
| 48 : | loadline @ ; | ||
| 49 : | |||
| 50 : | crook | 1.7 | : init-included-files ( -- ) \ gforth |
| 51 : | \G Clear the list of earlier included files. | ||
| 52 : | anton | 1.1 | image-included-files 2@ 2* cells save-mem drop ( addr ) |
| 53 : | image-included-files 2@ nip included-files 2! ; | ||
| 54 : | |||
| 55 : | : included? ( c-addr u -- f ) \ gforth | ||
| 56 : | crook | 1.7 | \G True only if the file @var{c-addr u} is in the list of earlier |
| 57 : | \G included files. If the file has been loaded, it may have been | ||
| 58 : | crook | 1.9 | \G specified as, say, @file{foo.fs} and found somewhere on the |
| 59 : | \G Forth search path. To return @code{true} from @code{included?}, | ||
| 60 : | \G you must specify the exact path to the file, even if that is | ||
| 61 : | \G @file{./foo.fs} | ||
| 62 : | anton | 1.1 | included-files 2@ 0 |
| 63 : | ?do ( c-addr u addr ) | ||
| 64 : | dup >r 2@ 2over compare 0= | ||
| 65 : | if | ||
| 66 : | 2drop rdrop unloop | ||
| 67 : | true EXIT | ||
| 68 : | then | ||
| 69 : | r> cell+ cell+ | ||
| 70 : | loop | ||
| 71 : | 2drop drop false ; | ||
| 72 : | |||
| 73 : | : add-included-file ( c-addr u -- ) \ gforth | ||
| 74 : | \G add name c-addr u to included-files | ||
| 75 : | included-files 2@ 2* cells 2 cells extend-mem | ||
| 76 : | 2/ cell / included-files 2! | ||
| 77 : | 2! ; | ||
| 78 : | |||
| 79 : | : included1 ( i*x file-id c-addr u -- j*x ) \ gforth | ||
| 80 : | crook | 1.7 | \G Include the file file-id with the name given by @var{c-addr u}. |
| 81 : | anton | 1.1 | loadfilename# @ >r |
| 82 : | save-mem add-included-file ( file-id ) | ||
| 83 : | included-files 2@ nip 1- loadfilename# ! | ||
| 84 : | ['] include-file catch | ||
| 85 : | r> loadfilename# ! | ||
| 86 : | throw ; | ||
| 87 : | |||
| 88 : | crook | 1.7 | : included ( i*x c-addr u -- j*x ) \ file |
| 89 : | anton | 1.4 | \G @code{include-file} the file whose name is given by the string |
| 90 : | crook | 1.7 | \G @var{c-addr u}. |
| 91 : | jwilke | 1.3 | open-fpath-file throw included1 ; |
| 92 : | anton | 1.1 | |
| 93 : | : required ( i*x addr u -- j*x ) \ gforth | ||
| 94 : | crook | 1.7 | \G @code{include-file} the file with the name given by @var{addr |
| 95 : | \G u}, if it is not @code{included} (or @code{required}) | ||
| 96 : | \G already. Currently this works by comparing the name of the file | ||
| 97 : | \G (with path) against the names of earlier included files. | ||
| 98 : | anton | 1.4 | \ however, it may be better to fstat the file, |
| 99 : | \ and compare the device and inode. The advantages would be: no | ||
| 100 : | \ problems with several paths to the same file (e.g., due to | ||
| 101 : | \ links) and we would catch files included with include-file and | ||
| 102 : | \ write a require-file. | ||
| 103 : | jwilke | 1.3 | open-fpath-file throw 2dup included? |
| 104 : | anton | 1.1 | if |
| 105 : | 2drop close-file throw | ||
| 106 : | else | ||
| 107 : | included1 | ||
| 108 : | then ; | ||
| 109 : | |||
| 110 : | \ INCLUDE 9may93jaw | ||
| 111 : | |||
| 112 : | anton | 1.4 | : include ( ... "file" -- ... ) \ gforth |
| 113 : | crook | 1.7 | \G @code{include-file} the file @var{file}. |
| 114 : | name included ; | ||
| 115 : | anton | 1.1 | |
| 116 : | anton | 1.4 | : require ( ... "file" -- ... ) \ gforth |
| 117 : | crook | 1.7 | \G @code{include-file} @var{file} only if it is not included already. |
| 118 : | name required ; | ||
| 119 : | anton | 1.1 | |
| 120 : | 0 [IF] | ||
| 121 : | : \I | ||
| 122 : | here | ||
| 123 : | 0 word count | ||
| 124 : | string, | ||
| 125 : | needsrcs^ @ ! ; | ||
| 126 : | |||
| 127 : | : .modules | ||
| 128 : | cr | ||
| 129 : | needs^ @ | ||
| 130 : | BEGIN dup | ||
| 131 : | WHILE dup cell+ count type cr | ||
| 132 : | 5 spaces | ||
| 133 : | dup cell+ count + aligned | ||
| 134 : | @ dup IF count type ELSE drop THEN cr | ||
| 135 : | @ | ||
| 136 : | REPEAT | ||
| 137 : | drop ; | ||
| 138 : | |||
| 139 : | : loadfilename#>str ( n -- adr len ) | ||
| 140 : | \ this converts the filenumber into the string | ||
| 141 : | loadfilenamecount @ swap - | ||
| 142 : | needs^ @ | ||
| 143 : | swap 0 ?DO dup 0= IF LEAVE THEN @ LOOP | ||
| 144 : | dup IF cell+ count ELSE drop s" NOT FOUND" THEN ; | ||
| 145 : | [THEN] | ||
| 146 : | |||
| 147 : | : loadfilename#>str ( n -- adr len ) | ||
| 148 : | included-files 2@ drop swap 2* cells + 2@ ; | ||
| 149 : | |||
| 150 : | : .modules | ||
| 151 : | included-files 2@ 2* cells bounds ?DO | ||
| 152 : | cr I 2@ type 2 cells +LOOP ; | ||
| 153 : | |||
| 154 : | \ contains tools/newrequire.fs | ||
| 155 : | crook | 1.9 | \ \I $Id: require.fs,v 1.8 1999/05/17 14:55:50 jwilke Exp $ |
| 156 : | anton | 1.1 |
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