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Diff for /gforth/search.fs between versions 1.1 and 1.6

version 1.1, 1997/05/21 20:39:38 version 1.6, 1998/12/08 22:02:51
Line 1 Line 1
 \ search order wordset                                 14may93py  \ search order wordset                                 14may93py
   
 \ Copyright (C) 1995 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 26  Variable vp Line 26  Variable vp
 : get-current  ( -- wid )  current @ ;  : get-current  ( -- wid )  current @ ;
 : set-current  ( wid -- )  current ! ;  : set-current  ( wid -- )  current ! ;
   
 : context ( -- addr )  vp dup @ cells + ;  \ : context ( -- addr )  vp dup @ cells + ;
   : vp! dup vp ! cells vp + to context ;
 : definitions  ( -- )  context @ current ! ;  : definitions  ( -- )  context @ current ! ;
   
 \ wordlist Vocabulary also previous                    14may93py  \ wordlist Vocabulary also previous                    14may93py
   
 AVariable voclink  Variable slowvoc   0 slowvoc !
   
 Defer 'initvoc  \ Forth-wordlist AConstant Forth-wordlist
 ' drop ' 'initvoc >body !  
   
 Variable slowvoc   slowvoc off  : mappedwordlist ( map-struct -- wid )  \ gforth
   \G creates a wordlist with a special map-structure
 Forth-wordlist AConstant Forth-wordlist    here swap A, 0 A, voclink @ A, 0 A,
     dup wordlist-link voclink !
     dup initvoc ;
   
 : wordlist  ( -- wid )  : wordlist  ( -- wid )
   here  0 A,  
   slowvoc @    slowvoc @
   IF    [ Forth-wordlist wordlist-map @ ] ALiteral    IF    \ this is now f83search because hashing may be loaded already
           \ jaw
           f83search 
   ELSE  Forth-wordlist wordlist-map @   THEN    ELSE  Forth-wordlist wordlist-map @   THEN
   A, voclink @ A, slowvoc @ A,    mappedwordlist ;
   dup wordlist-link dup voclink ! 'initvoc ;  
   
 : Vocabulary ( -- ) Create wordlist drop  DOES> context ! ;  : Vocabulary ( -- ) Create wordlist drop  DOES> context ! ;
   
 : also  ( -- )  : also  ( -- )
   context @ vp @ 1+ dup maxvp > abort" Vocstack full"    context @ vp @ 1+ dup maxvp > abort" Vocstack full"
   vp ! context ! ;    vp! context ! ;
   
 : previous ( -- )  vp @ 1- dup 0= abort" Vocstack empty" vp ! ;  : previous ( -- )  vp @ 1- dup 0= abort" Vocstack empty" vp! ;
   
 \ vocabulary find                                      14may93py  \ vocabulary find                                      14may93py
   
Line 88  Forth-wordlist AConstant Forth-wordlist Line 90  Forth-wordlist AConstant Forth-wordlist
   
 \ this is the wordlist-map of the dictionary  \ this is the wordlist-map of the dictionary
 Create vocsearch ( -- wordlist-map )  Create vocsearch ( -- wordlist-map )
 ' (localsvocfind) A, ' (reveal) A,  ' drop A,  ' (localsvocfind) A, ' (reveal) A,  ' drop A, ' drop A,
   
 \ Only root                                            14may93py  \ create dummy wordlist for kernel
   slowvoc on
   vocsearch mappedwordlist \ the wordlist structure ( -- wid )
   
   \ we don't want the dummy wordlist in our linked list
   0 Voclink !
   slowvoc off
   
 wordlist \ the wordlist structure  \ Only root                                            14may93py
 vocsearch over wordlist-map ! \ patch the map into it  
   
 Vocabulary Forth  Vocabulary Forth
 Vocabulary Root  Vocabulary Root
   
 : Only  vp off  also Root also definitions ;  : Only  1 vp! Root also ;
   
 \ set initial search order                             14may93py  \ set initial search order                             14may93py
   
 Forth-wordlist @ ' Forth >body !  Forth-wordlist wordlist-id @ ' Forth >body wordlist-id !
   
 vp off  also Root also definitions  0 vp! also Root also definitions
 Only Forth 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 118  lookup ! \ our dictionary search order b Line 124  lookup ! \ our dictionary search order b
   vp @ 0 ?DO  vp cell+ I cells + @  LOOP  vp @ ;    vp @ 0 ?DO  vp cell+ I cells + @  LOOP  vp @ ;
   
 : set-order  ( wid1 .. widn n / -1 -- )  : set-order  ( wid1 .. widn n / -1 -- )
   dup -1 = IF  drop Only exit  THEN  dup vp !    dup -1 = IF  drop Only exit  THEN  dup vp!
   ?dup IF  1- FOR  vp cell+ I cells + !  NEXT  THEN ;    ?dup IF  1- FOR  vp cell+ I cells + !  NEXT  THEN ;
   
 : seal ( -- )  context @ 1 set-order ;  : seal ( -- )  context @ 1 set-order ;
   
 \ words visible in roots                               14may93py  
   
 : .name ( name -- ) \ gforth    dot-name  
     name>string type space ;  
   
 require termsize.fs  
   
 : words ( -- ) \ tools  
     cr 0 context @  
     BEGIN  
         @ dup  
     WHILE  
         2dup name>string nip 2 + dup >r +  
         cols >=  
         IF  
             cr nip 0 swap  
         THEN  
         dup .name space r> rot + swap  
     REPEAT  
     2drop ;  
   
 ' words alias vlist ( -- ) \ gforth  
 \g Old (pre-Forth-83) name for @code{WORDS}.  
   
 : body> ( data -- cfa )  0 >body - ;  
   
 : .voc  : .voc
     body> >name .name ;      body> >head name>string type space ;
   
 : order ( -- )  \  search-ext  : order ( -- )  \  search-ext
     \g prints the search order and the @code{current} wordlist.  The      \g prints the search order and the @code{current} wordlist.  The
     \g standard requires that the wordlists are printed in the order      \g standard requires that the wordlists are printed in the order
Line 162  require termsize.fs Line 143  require termsize.fs
         .voc          .voc
     LOOP      LOOP
     4 spaces get-current .voc ;      4 spaces get-current .voc ;
   
 : vocs ( -- ) \ gforth  : vocs ( -- ) \ gforth
     \g prints vocabularies and wordlists defined in the system.      \g prints vocabularies and wordlists defined in the system.
     voclink      voclink
     BEGIN      BEGIN
         @ dup @          @ dup
     WHILE      WHILE
         dup 0 wordlist-link - .voc          dup 0 wordlist-link - .voc
     REPEAT      REPEAT
Line 182  Root definitions Line 164  Root definitions
   
 Forth definitions  Forth definitions
   
 include hash.fs  
   
 \ table (case-sensitive wordlist)  
   
 : table-find ( addr len wordlist -- nfa / false )  
     >r 2dup r> bucket @ (tablefind) ;  
   
 Create tablesearch-map ( -- wordlist-map )  
     ' table-find A, ' hash-reveal A, ' (rehash) A,  
   
 : table ( -- wid )  
     \g create a case-sensitive wordlist  
     wordlist  
     tablesearch-map over wordlist-map ! ;  
   
 \ marker                                               18dec94py  
   
 \ Marker creates a mark that is removed (including everything   
 \ defined afterwards) when executing the mark.  
   
 : marker, ( -- mark )  here dup A,  
   voclink @ A, voclink  
   BEGIN  @ dup @  WHILE  dup 0 wordlist-link - @ A,  REPEAT  drop  
   udp @ , ;  
   
 : marker! ( mark -- )  
     dup @ swap cell+  
     dup @ voclink ! cell+  
     voclink  
     BEGIN  
         @ dup @   
     WHILE  
         over @ over 0 wordlist-link - !  
         swap cell+ swap  
     REPEAT  
     drop  voclink  
     BEGIN  
         @ dup @  
     WHILE  
         dup 0 wordlist-link - rehash  
     REPEAT  
     drop  
     @ udp !  dp ! ;  
   
 : marker ( "mark" -- )  
     marker, Create A,  
 DOES> ( -- )  
     @ marker! ;  
Removed from v.1.1  
changed lines
  Added in v.1.6

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