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Diff for /gforth/search.fs between versions 1.18 and 1.29

version 1.18, 2000/09/23 15:46:58 version 1.29, 2007/07/06 12:54:56
Line 1 Line 1
 \ search order wordset                                 14may93py  \ search order wordset                                 14may93py
   
 \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997,1998,2000,2003,2005 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 18 Line 18
 \ along with this program; if not, write to the Free Software  \ along with this program; if not, write to the Free Software
 \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.  \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
 $10 constant maxvp  require struct.fs
 Variable vp  
   0 A, 0 A,  0 A, 0 A,   0 A, 0 A,   0 A, 0 A,   $10 Value maxvp         \ current size of search order stack
   0 A, 0 A,  0 A, 0 A,   0 A, 0 A,   0 A, 0 A,   $400 Value maxvp-limit  \ upper limit for resizing search order stack
   0 AValue vp             \ will be initialized later (dynamic)
   
 : 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 50  Variable slowvoc   0 slowvoc ! Line 51  Variable slowvoc   0 slowvoc !
   
 : mappedwordlist ( map-struct -- wid )  \ gforth  : mappedwordlist ( map-struct -- wid )  \ gforth
 \G Create a wordlist with a special map-structure.  \G Create a wordlist with a special map-structure.
   here swap A, 0 A, voclink @ A, 0 A,    align here swap A, 0 A, voclink @ A, 0 A,
   dup wordlist-link voclink !    dup wordlist-link voclink !
   dup initvoc ;    dup initvoc ;
   
Line 71  Variable slowvoc   0 slowvoc ! Line 72  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 ;
   
 : >order ( wid -- ) \ gforth to-order  : >order ( wid -- ) \ gforth to-order
     \g Push @var{wid} on the search order.      \g Push @var{wid} on the search order.
Line 131  slowvoc off Line 136  slowvoc off
   
 \ Only root                                            14may93py  \ Only root                                            14may93py
   
 Vocabulary Forth ( -- ) \ gforthman- search-ext  Vocabulary Forth ( -- ) \ search-ext
   \G Replace the @i{wid} at the top of the search order with the    \G Replace the @i{wid} at the top of the search order with the
   \G @i{wid} associated with the word list @code{forth-wordlist}.    \G @i{wid} associated with the word list @code{forth-wordlist}.
   
Line 146  Vocabulary Root ( -- ) \ gforth Line 151  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 ;
   
   : update-image-order ( -- )
       \ save search order here, let vp point there
       here vp over vp @ 1+ cells
       dup allot move
       to vp ;
   
   : init-vp  ( -- )
       vp @ $10 max to maxvp
       maxvp 1+ cells allocate throw
       vp over vp @ 1+ cells move
       TO vp ;
   
   :noname
      init-vp DEFERS 'cold ;
   IS 'cold
   
   here 0 , to vp
   
   init-vp Only Forth also definitions
   
 \ 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
Line 167  lookup ! \ our dictionary search order b Line 190  lookup ! \ our dictionary search order b
   \G last.    \G last.
   vp @ 0 ?DO vp cell+ I cells + @ LOOP vp @ ;    vp @ 0 ?DO vp cell+ I cells + @ LOOP vp @ ;
   
 : set-order  ( widn .. wid1 n -- ) \ gforthman- search  : set-order  ( widn .. wid1 n -- ) \ search
     \G If @var{n}=0, empty the search order.  If @var{n}=-1, set the      \G If @var{n}=0, empty the search order.  If @var{n}=-1, set the
     \G search order to the implementation-defined minimum search order      \G search order to the implementation-defined minimum search order
     \G (for Gforth, this is the word list @code{Root}). Otherwise,      \G (for Gforth, this is the word list @code{Root}). Otherwise,
Line 187  lookup ! \ our dictionary search order b Line 210  lookup ! \ our dictionary search order b
   \G list that is currently on the top of the search order stack.    \G list that is currently on the top of the search order stack.
   context @ 1 set-order ;    context @ 1 set-order ;
   
 : .voc  [IFUNDEF] .name
     body> >head-noprim name>string type space ;  : id. ( nt -- ) \ gforth  i-d-dot
       \G Print the name of the word represented by @var{nt}.
       \ this name comes from fig-Forth
       name>string type space ;
   
   ' id. alias .id ( nt -- ) \ F83  dot-i-d
   \G F83 name for @code{id.}.
   
   ' id. alias .name ( nt -- ) \ gforth-obsolete  dot-name
   \G Gforth <=0.5.0 name for @code{id.}.
   
   [THEN]
   
   : .voc ( wid -- ) \ gforth  dot-voc
   \G print the name of the wordlist represented by @var{wid}.  Can
   \G only print names defined with @code{vocabulary} or
   \G @code{wordlist constant}, otherwise prints @samp{???}.
       dup >r wordlist-struct %size + dup head? if ( wid nt )
           dup name>int dup >code-address docon: = swap >body @ r@ = and if
               id. rdrop exit
           endif
       endif
       drop r> body> >head-noprim id. ;
   
 : order ( -- )  \  gforthman- search-ext  : order ( -- )  \  search-ext
   \G Print the search order and the compilation word list.  The    \G Print the search order and the compilation word list.  The
   \G word lists are printed in the order in which they are searched    \G word lists are printed in the order in which they are searched
   \G (which is reversed with respect to the conventional way of    \G (which is reversed with respect to the conventional way of
Line 219  Root definitions Line 264  Root definitions
 ' words Alias words  ( -- ) \ tools  ' words Alias words  ( -- ) \ tools
 \G Display a list of all of the definitions in the word list at the top  \G Display a list of all of the definitions in the word list at the top
 \G of the search order.  \G of the search order.
 ' Forth Alias Forth  ' Forth Alias Forth \ alias- search-ext
 ' forth-wordlist alias forth-wordlist ( -- wid ) \ search  ' forth-wordlist alias forth-wordlist ( -- wid ) \ search
   \G @code{Constant} -- @i{wid} identifies the word list that includes all of the standard words    \G @code{Constant} -- @i{wid} identifies the word list that includes all of the standard words
   \G provided by Gforth. When Gforth is invoked, this word list is the compilation word    \G provided by Gforth. When Gforth is invoked, this word list is the compilation word
   \G list and is at the top of the search order.    \G list and is at the top of the search order.
 ' set-order alias set-order  ' set-order alias set-order ( wid1 ... widu u -- ) \ alias- search
 ' order alias order  ' order alias order ( -- ) \ alias- search-ext
   
 Forth definitions  Forth definitions
   
Removed from v.1.18  
changed lines
  Added in v.1.29

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