41 lines
1.3 KiB
Factor
41 lines
1.3 KiB
Factor
! (c)2010 Joe Groff bsd license
|
|
USING: accessors arrays assocs hashtables hashtables.wrapped
|
|
kernel parser sequences vocabs.loader ;
|
|
IN: hashtables.identity
|
|
|
|
TUPLE: identity-wrapper < wrapped-key ;
|
|
|
|
C: <identity-wrapper> identity-wrapper
|
|
|
|
M: identity-wrapper equal?
|
|
over identity-wrapper?
|
|
[ [ underlying>> ] bi@ eq? ]
|
|
[ 2drop f ] if ; inline
|
|
|
|
M: identity-wrapper hashcode*
|
|
nip underlying>> identity-hashcode ; inline
|
|
|
|
TUPLE: identity-hashtable < wrapped-hashtable ;
|
|
|
|
: <identity-hashtable> ( n -- ihash )
|
|
<hashtable> identity-hashtable boa ; inline
|
|
|
|
M: identity-hashtable wrap-key drop <identity-wrapper> ;
|
|
|
|
M: identity-hashtable clone
|
|
underlying>> clone identity-hashtable boa ; inline
|
|
|
|
: identity-associate ( value key -- hash )
|
|
2 <identity-hashtable> [ set-at ] keep ; inline
|
|
|
|
: >identity-hashtable ( assoc -- ihashtable )
|
|
[ assoc-size <identity-hashtable> ] keep assoc-union! ;
|
|
|
|
M: identity-hashtable assoc-like
|
|
drop dup identity-hashtable? [ >identity-hashtable ] unless ; inline
|
|
|
|
SYNTAX: IH{ \ } [ >identity-hashtable ] parse-literal ;
|
|
|
|
{ "hashtables.identity" "prettyprint" } "hashtables.identity.prettyprint" require-when
|
|
{ "hashtables.identity" "mirrors" } "hashtables.identity.mirrors" require-when
|