Diff for /gforth/wordinfo.fs between versions 1.8 and 1.22

version 1.8, 1995/11/07 18:07:05 version 1.22, 2000/09/23 15:46:59
Line 1 Line 1
 \ WORDINFO.FS  V1.0                                    17may93jaw  \ WORDINFO.FS  V1.0                                    17may93jaw
   
 \ Copyright (C) 1995 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1998,2000 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 16 Line 16
   
 \ You should have received a copy of the GNU General Public License  \ You should have received a copy of the GNU General Public License
 \ along with this program; if not, write to the Free Software  \ along with this program; if not, write to the Free Software
 \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  \ 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+ c@ 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>) >code-address dovar: = ;      ((name>)) >code-address dovar: = ;
   
 : con?  ( nfa -- flag )  : con?  ( nfa -- flag )
     cell+ (name>) >code-address docon: = ;      ((name>)) >code-address docon: = ;
   
 : user?  ( nfa -- flag )  : user?  ( nfa -- flag )
     cell+ (name>) >code-address douser: = ;      ((name>)) >code-address douser: = ;
   
 : does? ( nfa -- flag )  : does? ( nfa -- flag )
     \ !! does not work on all installations      ((name>))
     cell+ (name>)      >does-code 0<> ;
     >code-address ['] bits >code-address = ;  
   
 : defered? ( nfa -- flag )  : defered? ( nfa -- flag )
     cell+ (name>) >code-address dodefer: = ;      ((name>)) >code-address dodefer: = ;
   
 : colon? ( nfa -- flag )  : colon? ( nfa -- flag )
     cell+ (name>) >code-address docol: = ;      ((name>)) >code-address docol: = ;
   
 \ the above words could be factored with create-does>, but this would  \ the above words could be factored with create-does>, but this would
 \ probably make this file incompatible with cross.  \ probably make this file incompatible with cross.
   
 \ VALUE VCheck  [IFDEF] forthstart
   : xtprim? ( xt -- flag )
 \ : value? ( nfa -- flag )      in-dictionary? 0= ; \ !! does not work for CODE words
 \         dup does?  [ELSE]
 \         IF here @ ['] VCheck cell+ @ =  : xtprim? ( xt -- flag )
 \            dup IF swap (name>) >body @ here ! ELSE nip THEN      dup >body swap >code-address = ; \ !! works only for indirect threaded code
 \         ELSE drop false THEN ;                                       \ !! does not work for primitives
   [THEN]
 : prim? ( nfa -- flag )  : prim? ( nfa -- flag )
         name>          name>int xtprim? ;
         forthstart u< ;  
   
 \ None nestable IDs:  \ None nestable IDs:
   

Removed from v.1.8  
changed lines
  Added in v.1.22


FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>