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Diff for /gforth/hash.fs between versions 1.6 and 1.10

version 1.6, 1994/11/24 16:55:15 version 1.10, 1995/11/07 18:06:43
Line 1 Line 1
 \ Hashed dictionaries                                  15jul94py  \ Hashed dictionaries                                  15jul94py
   
 9 value hashbits  \ Copyright (C) 1995 Free Software Foundation, Inc.
   
   \ This file is part of Gforth.
   
   \ Gforth is free software; you can redistribute it and/or
   \ modify it under the terms of the GNU General Public License
   \ as published by the Free Software Foundation; either version 2
   \ of the License, or (at your option) any later version.
   
   \ This program is distributed in the hope that it will be useful,
   \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   \ GNU General Public License for more details.
   
   \ You should have received a copy of the GNU General Public License
   \ along with this program; if not, write to the Free Software
   \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   
   11 value hashbits
 1 hashbits lshift Value Hashlen  1 hashbits lshift Value Hashlen
   
 Variable insRule        insRule on  Variable insRule        insRule on
Line 29  Variable HashIndex Line 47  Variable HashIndex
   
   
 : hash-find ( addr len wordlist -- nfa / false )  : hash-find ( addr len wordlist -- nfa / false )
     $C + @ >r      [ 3 cells ] Literal + @ >r
     2dup hash r> xor cells HashTable @ + @ (hashfind) ;      2dup hash r> xor cells HashTable @ + @ (hashfind) ;
   
 \ hash vocabularies                                    16jul94py  \ hash vocabularies                                    16jul94py
Line 37  Variable HashIndex Line 55  Variable HashIndex
 : lastlink! ( addr link -- )  : lastlink! ( addr link -- )
   BEGIN  dup @ dup  WHILE  nip  REPEAT  drop ! ;    BEGIN  dup @ dup  WHILE  nip  REPEAT  drop ! ;
   
 : (reveal ( addr voc -- )  $C + dup @ 0< IF  2drop EXIT  THEN  : (reveal ( addr voc -- )  [ 3 cells ] Literal + dup @ 0< IF  2drop EXIT  THEN
   @ over cell+ count $1F and Hash xor cells >r    @ over cell+ count $1F and Hash xor cells >r
   HashPointer 8 $400 NewFix    HashPointer 2 Cells $400 NewFix
   tuck cell+ ! r> HashTable @ + insRule @    tuck cell+ ! r> HashTable @ + insRule @
   IF  dup @ 2 pick ! !  ELSE  lastlink!  THEN  revealed on ;    IF  dup @ 2 pick ! !  ELSE  lastlink!  THEN  revealed on ;
   
Line 58  Variable HashIndex Line 76  Variable HashIndex
         REPEAT  I !          REPEAT  I !
     cell +LOOP  HashIndex off ;      cell +LOOP  HashIndex off ;
   
 : rehash  clearhash addall ;  : re-hash  clearhash addall ;
 : (rehash) ( addr -- )  : (rehash) ( addr -- )
   drop revealed @ IF  rehash revealed off  THEN ;    drop revealed @ IF  re-hash revealed off  THEN ;
   
 Create hashsearch  ' hash-find A, ' hash-reveal A, ' (rehash) A,  Create hashsearch  ' hash-find A, ' hash-reveal A, ' (rehash) A,
   
Removed from v.1.6  
changed lines
  Added in v.1.10

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