| \ Hashed dictionaries 15jul94py |
\ Hashed dictionaries 15jul94py |
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| 7 value hashbits |
9 value hashbits |
| 1 hashbits lshift Value Hashlen |
1 hashbits lshift Value Hashlen |
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| Variable insRule insRule on |
Variable insRule insRule on |
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Variable revealed |
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| \ Memory handling 15jul94py |
\ Memory handling 10oct94py |
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| Variable HashPointer |
Variable HashPointer |
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Variable HashTable |
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Variable HashIndex |
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| : hash-alloc ( addr -- addr ) dup @ 0= IF |
\ DelFix and NewFix are from bigFORTH 15jul94py |
| Hashlen cells allocate throw over ! |
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| dup @ Hashlen cells erase THEN ; |
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| \ DelFix and NewFix is 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 ) |
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| : hash-find ( addr len wordlist -- nfa / false ) |
: hash-find ( addr len wordlist -- nfa / false ) |
| $C + @ >r |
$C + @ >r |
| 2dup hash cells r> + @ (hashfind) ; |
2dup hash r> xor cells HashTable @ + @ (hashfind) ; |
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| \ hash vocabularies 16jul94py |
\ hash vocabularies 16jul94py |
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| BEGIN dup @ dup WHILE nip REPEAT drop ! ; |
BEGIN dup @ dup WHILE nip REPEAT drop ! ; |
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| : (reveal ( addr voc -- ) $C + dup @ 0< IF 2drop EXIT THEN |
: (reveal ( addr voc -- ) $C + dup @ 0< IF 2drop EXIT THEN |
| hash-alloc @ over cell+ count $1F and Hash cells + >r |
@ over cell+ count $1F and Hash xor cells >r |
| HashPointer 8 $400 NewFix |
HashPointer 8 $400 NewFix |
| tuck cell+ ! r> insRule @ |
tuck cell+ ! r> HashTable @ + insRule @ |
| IF dup @ 2 pick ! ! ELSE lastlink! THEN ; |
IF dup @ 2 pick ! ! ELSE lastlink! THEN revealed on ; |
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| : hash-reveal ( -- ) (reveal) last? IF |
: hash-reveal ( -- ) (reveal) last? IF |
| current @ (reveal THEN ; |
current @ (reveal THEN ; |
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| Create hashsearch ' hash-find A, ' hash-reveal A, ' drop A, |
: addall ( -- ) |
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voclink |
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BEGIN @ dup @ WHILE dup 'initvoc REPEAT drop ; |
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: clearhash ( -- ) |
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HashTable @ Hashlen cells bounds |
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DO I @ |
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BEGIN dup WHILE |
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dup @ swap HashPointer DelFix |
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REPEAT I ! |
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cell +LOOP HashIndex off ; |
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: rehash clearhash addall ; |
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: (rehash) ( addr -- ) |
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drop revealed @ IF rehash revealed off THEN ; |
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Create hashsearch ' hash-find A, ' hash-reveal A, ' (rehash) A, |
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\ hash allocate and vocabulary initialization 10oct94py |
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: hash-alloc ( addr -- addr ) HashTable @ 0= IF |
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Hashlen cells allocate throw HashTable ! |
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HashTable @ Hashlen cells erase THEN |
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HashIndex @ over ! 1 HashIndex +! |
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HashIndex @ Hashlen >= |
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IF clearhash |
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1 hashbits 1+ dup to hashbits lshift to hashlen |
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HashTable @ free |
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addall |
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THEN ; |
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| : (initvoc ( addr -- ) |
: (initvoc) ( addr -- ) |
| cell+ dup @ 0< IF drop EXIT THEN |
cell+ dup @ 0< IF drop EXIT THEN |
| insRule @ >r insRule off hash-alloc |
insRule @ >r insRule off hash-alloc |
| 3 cells - hashsearch over cell+ ! dup |
3 cells - hashsearch over cell+ ! dup |
| BEGIN @ dup WHILE 2dup swap (reveal REPEAT |
BEGIN @ dup WHILE 2dup swap (reveal REPEAT |
| 2drop r> insRule ! ; |
2drop r> insRule ! ; |
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| ' (initvoc IS 'initvoc |
' (initvoc) IS 'initvoc |
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| : addall ( -- ) |
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| voclink |
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| BEGIN @ dup @ WHILE dup (initvoc REPEAT drop ; |
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| \ Hash-Find 01jan93py |
\ Hash-Find 01jan93py |
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| \ Baumsuche ist installiert. |
\ Baumsuche ist installiert. |
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| : .words ( -- ) |
: .words ( -- ) |
| base @ >r hex context @ 3 cells + 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 REPEAT drop |
| LOOP drop r> base ! ; |
LOOP drop r> base ! ; |
| \ : square dup * ; |
\ : square dup * ; |
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| \ : countwl ( -- sum sumsq ) |
\ : countwl ( -- sum sumsq ) |
| \ \ gives the number of words in the current wordlist and the sum of |
\ \ gives the number of words in the current wordlist |
| \ \ squares for the sublist lengths |
\ \ and the sum of squares for the sublist lengths |
| \ 0 0 |
\ 0 0 |
| \ context @ 3 cells + @ hashlen cells over + swap DO |
\ hashtable @ Hashlen cells bounds DO |
| \ 0 i BEGIN |
\ 0 i BEGIN |
| \ @ dup WHILE |
\ @ dup WHILE |
| \ swap 1+ swap |
\ swap 1+ swap |
| \ +LOOP ; |
\ +LOOP ; |
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| \ : chisq ( -- n ) |
\ : chisq ( -- n ) |
| \ \ n should have about the same size as hashlen |
\ \ n should have about the same size as Hashlen |
| \ countwl hashlen 2 pick */ swap - ; |
\ countwl Hashlen 2 pick */ swap - ; |