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Thu Jan 25 16:45:57 1996 UTC
(27 years ago) by anton
CVS tags: HEAD
eliminated "make realclean"; it's dangerous and useless.
eliminated relocation stuff in the kernal; was buggy and useless.
SIGPIPE now returns control to Forth.
Implemented form, rows, and cols; SIGWINCH updates these (on good OS's).
changed popen and pclose to open-pipe and close-pipe.
\ WORDINFO.FS V1.0 17may93jaw
\ Copyright (C) 1995 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
\ May be cross-compiled
\ If you want check values then exclude comments,
\ but keep in mind that this can't be cross-compiled
\ Wordinfo is a tool that checks a nfa
\ and finds out what wordtype we have
\ it is used in SEE.FS
\ the old alias? did not work and it is not used, so I changed
\ it in many respects - anton
: alias? ( nfa1 -- nfa2|0 )
\ if nfa1 is an alias, nfa2 is the name of the original word
cell+ dup c@ $80 and 0=
(name>) @ >name ( use look instead? )
: var? ( nfa -- flag )
cell+ (name>) >code-address dovar: = ;
: con? ( nfa -- flag )
cell+ (name>) >code-address docon: = ;
: user? ( nfa -- flag )
cell+ (name>) >code-address douser: = ;
: does? ( nfa -- flag )
\ !! does not work on all installations
>code-address ['] spaces >code-address = ;
: defered? ( nfa -- flag )
cell+ (name>) >code-address dodefer: = ;
: colon? ( nfa -- flag )
cell+ (name>) >code-address docol: = ;
\ the above words could be factored with create-does>, but this would
\ probably make this file incompatible with cross.
\ VALUE VCheck
\ : value? ( nfa -- flag )
\ dup does?
\ IF here @ ['] VCheck cell+ @ =
\ dup IF swap (name>) >body @ here ! ELSE nip THEN
\ ELSE drop false THEN ;
: prim? ( nfa -- flag )
forthstart u< ;
\ None nestable IDs:
1 CONSTANT Pri# \ Primitives
2 CONSTANT Con# \ Constants
3 CONSTANT Var# \ Variables
4 CONSTANT Val# \ Values
\ Nestabe IDs:
5 CONSTANT Doe# \ Does part
6 CONSTANT Def# \ Defer
7 CONSTANT Col# \ Colon def
8 CONSTANT Use# \ User variable
\ Nobody knows:
9 CONSTANT Ali# \ Alias
10 CONSTANT Str# \ Structure words
11 CONSTANT Com# \ Compiler directives : ; POSTPONE
' Prim? A, Pri# ,
' Alias? A, Ali# ,
' Con? A, Con# ,
' Var? A, Var# ,
\ ' Value? A, Val# ,
' Defered? A, Def# ,
' Does? A, Doe# ,
' Colon? A, Col# ,
' User? A, Use# ,
: WordInfo ( nfa --- code )
BEGIN dup @ dup
WHILE swap 2 cells + swap
2 pick swap execute
1 cells - @ nip
2drop drop 0