Diff for /gforth/wordinfo.fs between versions 1.4 and 1.23

version 1.4, 1994/07/13 19:21:09 version 1.23, 2001/01/28 18:49:10
Line 1 Line 1
 \ WORDINFO.FS  V1.0                                    17may93jaw  \ WORDINFO.FS  V1.0                                    17may93jaw
   
   \ Copyright (C) 1995,1996,1998,2000 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
 \ 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
   
 INCLUDE look.fs  require look.fs
   
 \ 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
   
 : 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 <>      \ if the original word has no name, return 0.
         IF   nip dup 1 cells - here !      dup cell+ @ alias-mask and 0=
              count $1f and here cell+ place true      IF ( nfa1 )
         ELSE 2drop false THEN ;          ((name>)) @ >name
       ELSE
           drop 0
       THEN ;
   
 : var?  ( nfa -- flag )  : var?  ( nfa -- flag )
         cell+ (name>)      ((name>)) >code-address dovar: = ;
         >code-address ['] udp >code-address = ;  
   
 : con?  ( nfa -- flag )  : con?  ( nfa -- flag )
         cell+ (name>)      ((name>)) >code-address docon: = ;
         >code-address ['] bl >code-address = ;  
   : user?  ( nfa -- flag )
       ((name>)) >code-address douser: = ;
   
 : does? ( nfa -- flag )  : does? ( nfa -- flag )
         cell+ dup (name>)      ((name>))
         >code-address ['] source >code-address =      >does-code 0<> ;
         dup IF swap (name>) cell+ @ here ! ELSE nip THEN ;  
   
 : defered? ( nfa -- flag )  : defered? ( nfa -- flag )
         dup does?      ((name>)) >code-address dodefer: = ;
         IF here @ ['] source cell+ @ =  
            dup IF swap cell+ (name>) >body @ here ! ELSE nip THEN  
         ELSE drop false THEN ;  
   
 : colon? ( nfa -- flag )  : colon? ( nfa -- flag )
         cell+ (name>)      ((name>)) >code-address docol: = ;
         >code-address ['] does? >code-address = ;  
   
 \ VALUE VCheck  
   
 \ : 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+ @ =  
 \            dup IF swap (name>) >body @ here ! ELSE nip THEN  
 \         ELSE drop false THEN ;  
   
   [IFDEF] forthstart
   : xtprim? ( xt -- flag )
       in-dictionary? 0= ; \ !! does not work for CODE words
   [ELSE]
   : xtprim? ( xt -- flag )
       dup >body swap >code-address = ; \ !! works only for indirect threaded code
                                        \ !! does not work for primitives
   [THEN]
 : prim? ( nfa -- flag )  : prim? ( nfa -- flag )
         name>          name>int xtprim? ;
         forthstart u< ;  
   
 \ None nestable IDs:  \ None nestable IDs:
   
Line 66  INCLUDE look.fs Line 85  INCLUDE look.fs
 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
   8 CONSTANT Use#         \ User variable
   
 \ Nobody knows:  \ Nobody knows:
   
 8 CONSTANT Ali#         \ Alias  9 CONSTANT Ali#         \ Alias
   
 9 CONSTANT Str#         \ Structure words  10 CONSTANT Str#         \ Structure words
   
 10 CONSTANT Com#        \ Compiler directives : ; POSTPONE  11 CONSTANT Com#        \ Compiler directives : ; POSTPONE
   
 CREATE InfoTable  CREATE InfoTable
         ' Prim? A, Pri# ,          ' Prim?    A, Pri# ,
         ' Alias? A, Ali# ,          ' Alias?   A, Ali# ,
         ' Con?   A, Con# ,          ' Con?     A, Con# ,
         ' Var?   A, Var# ,          ' Var?     A, Var# ,
 \        ' Value? A, Val# ,  \        ' Value?  A, Val# ,
         ' Defered? A, Def# ,          ' Defered? A, Def# ,
         ' Does? A, Doe# ,          ' Does?    A, Doe# ,
         ' Colon? A, Col# ,          ' Colon?   A, Col# ,
           ' User?    A, Use# ,
         0 ,          0 ,
   
 : WordInfo ( nfa --- code )  : WordInfo ( nfa --- code )

Removed from v.1.4  
changed lines
  Added in v.1.23


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