Diff for /gforth/look.fs between versions 1.6 and 1.13

version 1.6, 1996/08/26 10:07:20 version 1.13, 2000/05/27 09:41:28
Line 1 Line 1
 \ LOOK.FS      xt -> lfa                               22may93jaw  \ LOOK.FS      xt -> lfa                               22may93jaw
   
 \ Copyright (C) 1995 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 28 Line 28
   
 decimal  decimal
   
 : PrimStart ['] true >name ;  
   
 \ look                                                  17may93jaw  \ look                                                  17may93jaw
   
   \ rename to discover!!!
   
 : (look)  ( xt startlfa -- lfa flag )  : (look)  ( xt startlfa -- lfa flag )
         false swap          false swap
         BEGIN @ dup          BEGIN @ dup
Line 41  decimal Line 41  decimal
         drop nip          drop nip
         dup 0<> ;          dup 0<> ;
   
   
   \ !!! nicht optimal!
   [IFUNDEF] look
   has? ec [IF]
   
   has? rom 
   [IF]
   : look
       dup [ unlock rom-dictionary area lock ] 
       literal literal within
       IF
           >head-noprim dup ?? <>
       ELSE
           forth-wordlist @ (look)
       THEN ;
   [ELSE]
   : look ( cfa -- lfa flag )
       >head-noprim dup ??? <> ;
   [THEN]
   
   [ELSE]
   
   : PrimStart ['] true >head-noprim ;
   
 : look ( cfa -- lfa flag )  : look ( cfa -- lfa flag )
         dup forthstart <      dup in-dictionary?
         IF      IF
             PrimStart (look)          >head-noprim dup ??? <>
         ELSE      ELSE
             >name dup ??? <>          PrimStart (look)
         THEN ;      THEN ;
   
   [THEN]
   [THEN]
   
   : >head ( cfa -- nt|0 ) \ gforth to-head
       \G tries to find the name token nt of the word represented by cfa;
       \G returns 0 if it fails.  This word is not absolutely reliable,
       \G it may give false positives and produce wrong nts.
       look and ;
   
   ' >head ALIAS >name \ gforth to-name
   \G old name of @code{>head}

Removed from v.1.6  
changed lines
  Added in v.1.13


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