version 1.13, 1996/05/09 18:12:59
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version 1.20, 1998/05/02 21:28:42
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Line 18
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Line 18
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\ 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
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11 value hashbits |
[IFUNDEF] allocate |
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: reserve-mem here swap allot ; |
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\ move to a kernel/memory.fs |
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[ELSE] |
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: reserve-mem allocate throw ; |
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[THEN] |
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[IFUNDEF] hashbits |
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11 Value hashbits |
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[THEN] |
1 hashbits lshift Value Hashlen |
1 hashbits lshift Value Hashlen |
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\ compute hash key 15jul94py |
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[IFUNDEF] hash |
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: hash ( addr len -- key ) |
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hashbits (hashkey1) ; |
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[THEN] |
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Variable insRule insRule on |
Variable insRule insRule on |
Variable revealed |
Variable revealed |
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Line 30 Variable HashPointer
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Line 46 Variable HashPointer
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Variable HashIndex |
Variable HashIndex |
0 Value HashTable |
0 Value HashTable |
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\ forward declarations |
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0 Value hashsearch-map |
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Defer hash-alloc |
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\ DelFix and NewFix are from bigFORTH 15jul94py |
\ DelFix and NewFix are from bigFORTH 15jul94py |
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: DelFix ( addr root -- ) dup @ 2 pick ! ! ; |
: DelFix ( addr root -- ) dup @ 2 pick ! ! ; |
: NewFix ( root len # -- addr ) |
: NewFix ( root len # -- addr ) |
BEGIN 2 pick @ ?dup 0= WHILE 2dup * allocate throw |
BEGIN 2 pick @ ?dup 0= WHILE 2dup * reserve-mem |
over 0 ?DO dup 4 pick DelFix 2 pick + LOOP drop |
over 0 ?DO dup 4 pick DelFix 2 pick + LOOP drop |
REPEAT >r drop r@ @ rot ! r@ swap erase r> ; |
REPEAT >r drop r@ @ rot ! r@ swap erase r> ; |
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\ compute hash key 15jul94py |
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: hash ( addr len -- key ) |
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hashbits (hashkey1) ; |
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\ (hashkey) |
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\ Hashlen 1- and ; |
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: bucket ( addr len wordlist -- bucket-addr ) |
: bucket ( addr len wordlist -- bucket-addr ) |
\ @var{bucket-addr} is the address of a cell that points to the first |
\ @var{bucket-addr} is the address of a cell that points to the first |
\ element in the list of the bucket for the string @var{addr len} |
\ element in the list of the bucket for the string @var{addr len} |
Line 59 Variable HashIndex
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Line 72 Variable HashIndex
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: lastlink! ( addr link -- ) |
: lastlink! ( addr link -- ) |
BEGIN dup @ dup WHILE nip REPEAT drop ! ; |
BEGIN dup @ dup WHILE nip REPEAT drop ! ; |
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: (reveal ( addr voc -- ) |
: (reveal ( nfa wid -- ) |
dup wordlist-extend @ 0< |
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IF |
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2drop EXIT |
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THEN |
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over name>string rot bucket >r |
over name>string rot bucket >r |
HashPointer 2 Cells $400 NewFix |
HashPointer 2 Cells $400 NewFix |
tuck cell+ ! r> insRule @ |
tuck cell+ ! r> insRule @ |
Line 74 Variable HashIndex
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Line 83 Variable HashIndex
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THEN |
THEN |
revealed on ; |
revealed on ; |
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: hash-reveal ( -- ) |
: hash-reveal ( nfa wid -- ) |
(reveal) last? |
2dup (reveal) (reveal ; |
IF |
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current @ (reveal |
: inithash ( wid -- ) |
THEN ; |
wordlist-extend |
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insRule @ >r insRule off hash-alloc 3 cells - dup |
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BEGIN @ dup WHILE 2dup swap (reveal REPEAT |
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2drop r> insRule ! ; |
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: addall ( -- ) |
: addall ( -- ) |
voclink |
voclink |
BEGIN @ dup @ WHILE dup 'initvoc REPEAT drop ; |
BEGIN @ dup WHILE |
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dup 0 wordlist-link - |
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dup wordlist-map @ hashsearch-map = |
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IF inithash ELSE drop THEN |
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REPEAT drop ; |
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: clearhash ( -- ) |
: clearhash ( -- ) |
HashTable Hashlen cells bounds |
HashTable Hashlen cells bounds |
DO I @ |
DO I @ |
BEGIN dup WHILE |
BEGIN dup WHILE |
dup @ swap HashPointer DelFix |
dup @ swap HashPointer DelFix |
REPEAT I ! |
REPEAT I ! |
cell +LOOP HashIndex off ; |
cell +LOOP HashIndex off |
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voclink |
: re-hash clearhash addall ; |
BEGIN @ dup WHILE |
: (rehash) ( addr -- ) |
dup 0 wordlist-link - |
drop revealed @ IF re-hash revealed off THEN ; |
dup wordlist-map @ hashsearch-map = |
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IF 0 swap wordlist-extend ! ELSE drop THEN |
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REPEAT drop ; |
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: rehashall ( wid -- ) |
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drop revealed @ |
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IF clearhash addall revealed off |
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THEN ; |
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Create hashsearch-map ( -- wordlist-map ) |
: (rehash) ( wid -- ) |
' hash-find A, ' hash-reveal A, ' (rehash) A, |
dup wordlist-extend @ 0= |
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IF inithash |
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ELSE rehashall THEN ; |
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\ >rom ?! |
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align here ' hash-find A, ' hash-reveal A, ' (rehash) A, ' (rehash) A, |
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to hashsearch-map |
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\ hash allocate and vocabulary initialization 10oct94py |
\ hash allocate and vocabulary initialization 10oct94py |
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: hash-alloc ( addr -- addr ) HashTable 0= IF |
:noname ( hash-alloc ) ( addr -- addr ) |
Hashlen cells allocate throw TO HashTable |
HashTable 0= |
HashTable Hashlen cells erase THEN |
IF Hashlen cells reserve-mem TO HashTable |
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HashTable Hashlen cells erase THEN |
HashIndex @ over ! 1 HashIndex +! |
HashIndex @ over ! 1 HashIndex +! |
HashIndex @ Hashlen >= |
HashIndex @ Hashlen >= |
IF clearhash |
[ [IFUNDEF] allocate ] |
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ABORT" no more space in hashtable" |
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[ [ELSE] ] |
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IF HashTable >r clearhash |
1 hashbits 1+ dup to hashbits lshift to hashlen |
1 hashbits 1+ dup to hashbits lshift to hashlen |
HashTable free |
r> free >r 0 to HashTable |
addall |
addall r> throw |
THEN ; |
THEN |
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[ [THEN] ] ; is hash-alloc |
: (initvoc) ( addr -- ) |
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cell+ dup @ 0< IF drop EXIT THEN |
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insRule @ >r insRule off hash-alloc |
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3 cells - hashsearch-map over cell+ ! dup |
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BEGIN @ dup WHILE 2dup swap (reveal REPEAT |
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2drop r> insRule ! ; |
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' (initvoc) ' 'initvoc >body ! |
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\ Hash-Find 01jan93py |
\ Hash-Find 01jan93py |
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has? cross 0= |
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[IF] |
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: make-hash |
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hashsearch-map forth-wordlist cell+ ! |
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addall ; |
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make-hash \ Baumsuche ist installiert. |
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[ELSE] |
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hashsearch-map forth-wordlist cell+ ! |
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[THEN] |
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addall \ Baum aufbauen |
\ for ec version display that vocabulary goes hashed |
\ Baumsuche ist installiert. |
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: hash-cold ( -- ) Defers 'cold |
: hash-cold ( -- ) |
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[ has? ec [IF] ] ." Hashing..." [ [THEN] ] |
HashPointer off 0 TO HashTable HashIndex off |
HashPointer off 0 TO HashTable HashIndex off |
voclink |
addall |
BEGIN @ dup @ WHILE |
\ voclink |
dup cell - @ >r |
\ BEGIN @ dup WHILE |
dup 'initvoc |
\ dup 0 wordlist-link - initvoc |
r> over cell - ! |
\ REPEAT drop |
REPEAT drop ; |
[ has? ec [IF] ] ." Done" cr [ [THEN] ] ; |
' hash-cold ' 'cold >body ! |
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' hash-cold INIT8 chained |
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: .words ( -- ) |
: .words ( -- ) |
base @ >r hex HashTable Hashlen 0 |
base @ >r hex HashTable Hashlen 0 |
DO cr i 2 .r ." : " dup i cells + |
DO cr i 2 .r ." : " dup i cells + |
BEGIN @ dup WHILE |
BEGIN @ dup WHILE |
dup cell+ @ .name REPEAT drop |
dup cell+ @ name>string type space REPEAT drop |
LOOP drop r> base ! ; |
LOOP drop r> base ! ; |
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\ \ this stuff is for evaluating the hash function |
\ \ this stuff is for evaluating the hash function |