Diff for /gforth/search.fs between versions 1.15 and 1.22

version 1.15, 2000/08/16 09:26:52 version 1.22, 2003/01/20 17:07:38
Line 1 Line 1
 \ search order wordset                                 14may93py  \ search order wordset                                 14may93py
   
 \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997,1998,2000 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.
   
 $10 constant maxvp  $10 Value maxvp         \ current size of search order stack
 Variable vp  $400 Value maxvp-limit  \ upper limit for resizing search order stack
   0 A, 0 A,  0 A, 0 A,   0 A, 0 A,   0 A, 0 A,   0 AValue vp             \ will be initialized later (dynamic)
   0 A, 0 A,  0 A, 0 A,   0 A, 0 A,   0 A, 0 A,   
   
 : get-current  ( -- wid ) \ search  : get-current  ( -- wid ) \ search
   \G @i{wid} is the identifier of the current compilation word list.    \G @i{wid} is the identifier of the current compilation word list.
Line 71  Variable slowvoc   0 slowvoc ! Line 70  Variable slowvoc   0 slowvoc !
   Create wordlist drop  DOES> context ! ;    Create wordlist drop  DOES> context ! ;
   
 : check-maxvp ( n -- )  : check-maxvp ( n -- )
     maxvp > -49 and throw ;     dup maxvp-limit > -49 and throw
      dup maxvp > IF
         BEGIN  dup  maxvp 2* dup TO maxvp  <= UNTIL
         vp  maxvp 1+ cells resize throw TO vp
      THEN drop ;
   
 : push-order ( wid -- ) \ gforth  : >order ( wid -- ) \ gforth to-order
     \g Push @var{wid} on the search order.      \g Push @var{wid} on the search order.
     vp @ 1+ dup check-maxvp vp! context ! ;      vp @ 1+ dup check-maxvp vp! context ! ;
   
Line 81  Variable slowvoc   0 slowvoc ! Line 84  Variable slowvoc   0 slowvoc !
   \G Like @code{DUP} for the search order. Usually used before a    \G Like @code{DUP} for the search order. Usually used before a
   \G vocabulary (e.g., @code{also Forth}); the combined effect is to push    \G vocabulary (e.g., @code{also Forth}); the combined effect is to push
   \G the wordlist represented by the vocabulary on the search order.    \G the wordlist represented by the vocabulary on the search order.
   context @ push-order ;    context @ >order ;
   
 : previous ( -- ) \ search-ext  : previous ( -- ) \ search-ext
   \G Drop the wordlist at the top of the search order.    \G Drop the wordlist at the top of the search order.
Line 146  Vocabulary Root ( -- ) \ gforth Line 149  Vocabulary Root ( -- ) \ gforth
   \G order (for Gforth, this is the word list @code{Root}).    \G order (for Gforth, this is the word list @code{Root}).
   1 vp! Root also ;    1 vp! Root also ;
   
   : init-vp  ( -- )
      $10 TO maxvp
      maxvp 1+ cells allocate throw TO vp
      Only Forth also definitions ;
   
   :noname
      init-vp DEFERS 'cold ;
   IS 'cold
   
   init-vp
   
 \ set initial search order                             14may93py  \ set initial search order                             14may93py
   
 Forth-wordlist wordlist-id @ ' Forth >body wordlist-id !  Forth-wordlist wordlist-id @ ' Forth >body wordlist-id !
   
 0 vp! also Root also definitions  
 Only Forth also definitions  
 lookup ! \ our dictionary search order becomes the law ( -- )  lookup ! \ our dictionary search order becomes the law ( -- )
   
 ' Forth >body to Forth-wordlist \ "forth definitions get-current" and "forth-wordlist" should produce the same wid  ' Forth >body to Forth-wordlist \ "forth definitions get-current" and "forth-wordlist" should produce the same wid

Removed from v.1.15  
changed lines
  Added in v.1.22


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