| \ WORDINFO.FS V1.0 17may93jaw |
\ WORDINFO.FS V1.0 17may93jaw |
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\ Copyright (C) 1995 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation; either version 2 |
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\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
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\ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
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\ along with this program; if not, write to the Free Software |
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\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| \ May be cross-compiled |
\ May be cross-compiled |
| \ If you want check values then exclude comments, |
\ If you want check values then exclude comments, |
| \ but keep in mind that this can't be cross-compiled |
\ but keep in mind that this can't be cross-compiled |
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| INCLUDE look.fs |
\ INCLUDE look.fs |
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| \ Wordinfo is a tool that checks a nfa |
\ Wordinfo is a tool that checks a nfa |
| \ and finds out what wordtype we have |
\ and finds out what wordtype we have |
| \ it is used in SEE.FS |
\ it is used in SEE.FS |
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| : alias? ( nfa -- flag ) |
\ the old alias? did not work and it is not used, so I changed |
| dup name> look |
\ it in many respects - anton |
| 0= ABORT" WINFO: CFA not found" |
: alias? ( nfa1 -- nfa2|0 ) |
| cell+ |
\ if nfa1 is an alias, nfa2 is the name of the original word |
| 2dup <> |
dup cell+ c@ alias-mask and 0= |
| IF nip dup 1 cells - here ! |
IF ( nfa1 ) |
| count $1f and here cell+ place true |
((name>)) @ >name ( use look instead? ) |
| ELSE 2drop false THEN ; |
ELSE |
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drop 0 |
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THEN ; |
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| : var? ( nfa -- flag ) |
: var? ( nfa -- flag ) |
| (name>) |
((name>)) >code-address dovar: = ; |
| @ ['] leavings @ = ; |
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| : con? ( nfa -- flag ) |
: con? ( nfa -- flag ) |
| (name>) |
((name>)) >code-address docon: = ; |
| @ ['] bl @ = ; |
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: user? ( nfa -- flag ) |
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((name>)) >code-address douser: = ; |
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| : does? ( nfa -- flag ) |
: does? ( nfa -- flag ) |
| dup (name>) |
((name>)) |
| @ ['] source @ = |
>does-code 0<> ; |
| dup IF swap (name>) cell+ @ here ! ELSE nip THEN ; |
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| : defered? ( nfa -- flag ) |
: defered? ( nfa -- flag ) |
| dup does? |
((name>)) >code-address dodefer: = ; |
| IF here @ ['] source cell+ @ = |
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| dup IF swap (name>) >body @ here ! ELSE nip THEN |
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| ELSE drop false THEN ; |
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| : colon? ( nfa -- flag ) |
: colon? ( nfa -- flag ) |
| (name>) |
((name>)) >code-address docol: = ; |
| @ ['] does? @ = ; |
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| \ VALUE VCheck |
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| \ : value? ( nfa -- flag ) |
\ the above words could be factored with create-does>, but this would |
| \ dup does? |
\ probably make this file incompatible with cross. |
| \ IF here @ ['] VCheck cell+ @ = |
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| \ dup IF swap (name>) >body @ here ! ELSE nip THEN |
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| \ ELSE drop false THEN ; |
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[IFDEF] forthstart |
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: xtprim? ( xt -- flag ) |
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forthstart dictionary-end within ; \ !! does not work for CODE words |
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[ELSE] |
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: xtprim? ( xt -- flag ) |
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dup >body swap >code-address = ; \ !! works only for indirect threaded code |
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\ !! does not work for primitives |
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[THEN] |
| : prim? ( nfa -- flag ) |
: prim? ( nfa -- flag ) |
| name> |
name>int xtprim? ; |
| forthstart u< ; |
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| \ None nestable IDs: |
\ None nestable IDs: |
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| 5 CONSTANT Doe# \ Does part |
5 CONSTANT Doe# \ Does part |
| 6 CONSTANT Def# \ Defer |
6 CONSTANT Def# \ Defer |
| 7 CONSTANT Col# \ Colon def |
7 CONSTANT Col# \ Colon def |
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8 CONSTANT Use# \ User variable |
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| \ Nobody knows: |
\ Nobody knows: |
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| 8 CONSTANT Ali# \ Alias |
9 CONSTANT Ali# \ Alias |
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| 9 CONSTANT Str# \ Structure words |
10 CONSTANT Str# \ Structure words |
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| 10 CONSTANT Com# \ Compiler directives : ; POSTPONE |
11 CONSTANT Com# \ Compiler directives : ; POSTPONE |
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| CREATE InfoTable |
CREATE InfoTable |
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' Prim? A, Pri# , |
| ' Alias? A, Ali# , |
' Alias? A, Ali# , |
| ' Con? A, Con# , |
' Con? A, Con# , |
| ' Var? A, Var# , |
' Var? A, Var# , |
| ' Defered? A, Def# , |
' Defered? A, Def# , |
| ' Does? A, Doe# , |
' Does? A, Doe# , |
| ' Colon? A, Col# , |
' Colon? A, Col# , |
| ' Prim? A, Pri# , |
' User? A, Use# , |
| 0 , |
0 , |
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| : WordInfo ( nfa --- code ) |
: WordInfo ( nfa --- code ) |
