31 lines
793 B
Factor
31 lines
793 B
Factor
! Copyright (C) 2008 Doug Coleman.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: accessors assocs hashtables heaps kernel ;
|
|
IN: assoc-heaps
|
|
|
|
TUPLE: assoc-heap assoc heap ;
|
|
|
|
C: <assoc-heap> assoc-heap
|
|
|
|
: <unique-min-heap> ( -- unique-heap )
|
|
H{ } clone <min-heap> <assoc-heap> ;
|
|
|
|
: <unique-max-heap> ( -- unique-heap )
|
|
H{ } clone <max-heap> <assoc-heap> ;
|
|
|
|
M: assoc-heap heap-push* ( value key assoc-heap -- entry )
|
|
pick over assoc>> key? [
|
|
3drop f
|
|
] [
|
|
[ assoc>> swapd set-at ] [ heap>> heap-push* ] 3bi
|
|
] if ;
|
|
|
|
M: assoc-heap heap-pop ( assoc-heap -- value key )
|
|
heap>> heap-pop ;
|
|
|
|
M: assoc-heap heap-peek ( assoc-heap -- value key )
|
|
heap>> heap-peek ;
|
|
|
|
M: assoc-heap heap-empty? ( assoc-heap -- value key )
|
|
heap>> heap-empty? ;
|