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| 1 : | anton | 1.1 | \ WORDINFO.FS V1.0 17may93jaw |
| 2 : | |||
| 3 : | anton | 1.25 | \ Copyright (C) 1995,1996,1998,2000 Free Software Foundation, Inc. |
| 4 : | anton | 1.8 | |
| 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 : | anton | 1.22 | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 20 : | anton | 1.8 | |
| 21 : | anton | 1.1 | \ May be cross-compiled |
| 22 : | \ If you want check values then exclude comments, | ||
| 23 : | \ but keep in mind that this can't be cross-compiled | ||
| 24 : | |||
| 25 : | anton | 1.19 | require look.fs |
| 26 : | anton | 1.1 | |
| 27 : | \ Wordinfo is a tool that checks a nfa | ||
| 28 : | \ and finds out what wordtype we have | ||
| 29 : | \ it is used in SEE.FS | ||
| 30 : | |||
| 31 : | anton | 1.9 | \ the old alias? did not work and it is not used, so I changed |
| 32 : | \ it in many respects - anton | ||
| 33 : | : alias? ( nfa1 -- nfa2|0 ) | ||
| 34 : | anton | 1.20 | \ if nfa1 is an alias, nfa2 is the name of the original word. |
| 35 : | \ if the original word has no name, return 0. | ||
| 36 : | anton | 1.23 | dup cell+ @ alias-mask and 0= |
| 37 : | anton | 1.12 | IF ( nfa1 ) |
| 38 : | anton | 1.20 | ((name>)) @ >name |
| 39 : | anton | 1.9 | ELSE |
| 40 : | drop 0 | ||
| 41 : | THEN ; | ||
| 42 : | anton | 1.1 | |
| 43 : | : var? ( nfa -- flag ) | ||
| 44 : | anton | 1.12 | ((name>)) >code-address dovar: = ; |
| 45 : | anton | 1.1 | |
| 46 : | : con? ( nfa -- flag ) | ||
| 47 : | anton | 1.12 | ((name>)) >code-address docon: = ; |
| 48 : | anton | 1.1 | |
| 49 : | pazsan | 1.5 | : user? ( nfa -- flag ) |
| 50 : | anton | 1.12 | ((name>)) >code-address douser: = ; |
| 51 : | pazsan | 1.5 | |
| 52 : | anton | 1.1 | : does? ( nfa -- flag ) |
| 53 : | anton | 1.12 | ((name>)) |
| 54 : | anton | 1.13 | >does-code 0<> ; |
| 55 : | anton | 1.1 | |
| 56 : | : defered? ( nfa -- flag ) | ||
| 57 : | anton | 1.12 | ((name>)) >code-address dodefer: = ; |
| 58 : | anton | 1.1 | |
| 59 : | : colon? ( nfa -- flag ) | ||
| 60 : | anton | 1.12 | ((name>)) >code-address docol: = ; |
| 61 : | anton | 1.7 | |
| 62 : | \ the above words could be factored with create-does>, but this would | ||
| 63 : | \ probably make this file incompatible with cross. | ||
| 64 : | anton | 1.1 | |
| 65 : | jwilke | 1.14 | [IFDEF] forthstart |
| 66 : | : xtprim? ( xt -- flag ) | ||
| 67 : | anton | 1.18 | in-dictionary? 0= ; \ !! does not work for CODE words |
| 68 : | jwilke | 1.14 | [ELSE] |
| 69 : | : xtprim? ( xt -- flag ) | ||
| 70 : | anton | 1.15 | dup >body swap >code-address = ; \ !! works only for indirect threaded code |
| 71 : | \ !! does not work for primitives | ||
| 72 : | jwilke | 1.14 | [THEN] |
| 73 : | anton | 1.1 | : prim? ( nfa -- flag ) |
| 74 : | jwilke | 1.14 | name>int xtprim? ; |
| 75 : | anton | 1.1 | |
| 76 : | \ None nestable IDs: | ||
| 77 : | |||
| 78 : | 1 CONSTANT Pri# \ Primitives | ||
| 79 : | 2 CONSTANT Con# \ Constants | ||
| 80 : | 3 CONSTANT Var# \ Variables | ||
| 81 : | 4 CONSTANT Val# \ Values | ||
| 82 : | |||
| 83 : | \ Nestabe IDs: | ||
| 84 : | |||
| 85 : | 5 CONSTANT Doe# \ Does part | ||
| 86 : | 6 CONSTANT Def# \ Defer | ||
| 87 : | 7 CONSTANT Col# \ Colon def | ||
| 88 : | pazsan | 1.5 | 8 CONSTANT Use# \ User variable |
| 89 : | anton | 1.1 | |
| 90 : | \ Nobody knows: | ||
| 91 : | |||
| 92 : | pazsan | 1.5 | 9 CONSTANT Ali# \ Alias |
| 93 : | anton | 1.1 | |
| 94 : | pazsan | 1.5 | 10 CONSTANT Str# \ Structure words |
| 95 : | anton | 1.1 | |
| 96 : | pazsan | 1.5 | 11 CONSTANT Com# \ Compiler directives : ; POSTPONE |
| 97 : | anton | 1.1 | |
| 98 : | CREATE InfoTable | ||
| 99 : | pazsan | 1.5 | ' Prim? A, Pri# , |
| 100 : | ' Alias? A, Ali# , | ||
| 101 : | ' Con? A, Con# , | ||
| 102 : | ' Var? A, Var# , | ||
| 103 : | \ ' Value? A, Val# , | ||
| 104 : | anton | 1.1 | ' Defered? A, Def# , |
| 105 : | pazsan | 1.5 | ' Does? A, Doe# , |
| 106 : | ' Colon? A, Col# , | ||
| 107 : | ' User? A, Use# , | ||
| 108 : | anton | 1.1 | 0 , |
| 109 : | |||
| 110 : | : WordInfo ( nfa --- code ) | ||
| 111 : | InfoTable | ||
| 112 : | BEGIN dup @ dup | ||
| 113 : | WHILE swap 2 cells + swap | ||
| 114 : | 2 pick swap execute | ||
| 115 : | UNTIL | ||
| 116 : | 1 cells - @ nip | ||
| 117 : | ELSE | ||
| 118 : | 2drop drop 0 | ||
| 119 : | THEN ; | ||
| 120 : |
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