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hash-sets: reuse (rehash).

db4
John Benediktsson 2013-03-07 22:02:02 -08:00
parent eca5253017
commit 23078f7bd7
1 changed files with 8 additions and 5 deletions
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13
core/hash-sets/hash-sets.factor
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@ -61,8 +61,11 @@ TUPLE: hash-set
: set-nth-item ( key seq n -- )
2 fixnum+fast set-slot ; inline
: (rehash) ( hash seq -- )
swap [ dupd new-key@ set-nth-item ] curry each ; inline
: (adjoin) ( key hash -- )
dupd new-key@ set-nth-item ; inline
: (rehash) ( seq hash -- )
[ (adjoin) ] curry each ; inline
: hash-large? ( hash -- ? )
[ count>> 3 fixnum*fast 1 fixnum+fast ]
@ -73,7 +76,7 @@ TUPLE: hash-set
[ members { array } declare ]
[ cardinality 1 + ]
[ reset-hash ] tri
] keep swap (rehash) ;
] keep (rehash) ;
: ?grow-hash ( hash -- )
dup hash-large? [ grow-hash ] [ drop ] if ; inline
@ -101,7 +104,7 @@ M: hash-set cardinality ( hash -- n )
[ count>> ] [ deleted>> ] bi - ; inline
M: hash-set adjoin ( key hash -- )
dup ?grow-hash dupd new-key@ set-nth-item ;
dup ?grow-hash (adjoin) ;
<PRIVATE
@ -128,7 +131,7 @@ M: hash-set equal?
over hash-set? [ set= ] [ 2drop f ] if ;
: >hash-set ( members -- hash-set )
dup length <hash-set> [ [ adjoin ] curry each ] keep ;
dup length <hash-set> [ (rehash) ] keep ;
M: hash-set set-like
drop dup hash-set? [ ?members >hash-set ] unless ; inline