145 lines
3.6 KiB
Factor
Executable File
145 lines
3.6 KiB
Factor
Executable File
! Copyright (C) 2005, 2007 Slava Pestov.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: arrays definitions hashtables kernel
|
|
kernel.private math namespaces sequences sequences.private
|
|
strings vectors words quotations memory combinators generic
|
|
classes classes.private slots slots.private ;
|
|
IN: tuples
|
|
|
|
M: tuple delegate 3 slot ;
|
|
|
|
M: tuple set-delegate 3 set-slot ;
|
|
|
|
M: tuple class class-of-tuple ;
|
|
|
|
<PRIVATE
|
|
|
|
: tuple= ( tuple1 tuple2 -- ? )
|
|
over array-capacity over array-capacity tuck number= [
|
|
-rot
|
|
[ >r over r> array-nth >r array-nth r> = ] 2curry
|
|
all-integers?
|
|
] [
|
|
3drop f
|
|
] if ;
|
|
|
|
: tuple-class-eq? ( obj class -- ? )
|
|
over tuple? [ swap 2 slot eq? ] [ 2drop f ] if ; inline
|
|
|
|
: permutation ( seq1 seq2 -- permutation )
|
|
swap [ index ] curry map ;
|
|
|
|
: reshape-tuple ( oldtuple permutation -- newtuple )
|
|
>r tuple>array 2 cut r>
|
|
[ [ swap ?nth ] [ drop f ] if* ] with map
|
|
append (>tuple) ;
|
|
|
|
: reshape-tuples ( class newslots -- )
|
|
>r dup [ swap class eq? ] curry instances dup
|
|
rot "slot-names" word-prop r> permutation
|
|
[ reshape-tuple ] curry map become ;
|
|
|
|
: old-slots ( class newslots -- seq )
|
|
swap "slots" word-prop 1 tail-slice
|
|
[ slot-spec-name swap member? not ] with subset ;
|
|
|
|
: forget-slots ( class newslots -- )
|
|
dupd old-slots [
|
|
2dup
|
|
slot-spec-reader 2array forget
|
|
slot-spec-writer 2array forget
|
|
] with each ;
|
|
|
|
: check-shape ( class newslots -- )
|
|
over tuple-class? [
|
|
over "slot-names" word-prop over = [
|
|
2dup forget-slots
|
|
2dup reshape-tuples
|
|
over redefined
|
|
] unless
|
|
] when 2drop ;
|
|
|
|
GENERIC: tuple-size ( class -- size )
|
|
|
|
M: tuple-class tuple-size "slot-names" word-prop length 2 + ;
|
|
|
|
PRIVATE>
|
|
|
|
: define-tuple-predicate ( class -- )
|
|
dup [ tuple-class-eq? ] curry define-predicate ;
|
|
|
|
: delegate-slot-spec
|
|
T{ slot-spec f
|
|
object
|
|
"delegate"
|
|
3
|
|
delegate
|
|
set-delegate
|
|
} ;
|
|
|
|
: define-tuple-slots ( class slots -- )
|
|
dupd 4 simple-slots
|
|
2dup [ slot-spec-name ] map "slot-names" set-word-prop
|
|
2dup delegate-slot-spec add* "slots" set-word-prop
|
|
define-slots ;
|
|
|
|
TUPLE: check-tuple class ;
|
|
|
|
: check-tuple ( class -- )
|
|
dup tuple-class?
|
|
[ drop ] [ \ check-tuple construct-boa throw ] if ;
|
|
|
|
: define-tuple-class ( class slots -- )
|
|
2dup check-shape
|
|
over f tuple tuple-class define-class
|
|
over define-tuple-predicate
|
|
define-tuple-slots ;
|
|
|
|
M: tuple clone
|
|
(clone) dup delegate clone over set-delegate ;
|
|
|
|
M: tuple equal?
|
|
over tuple? [ tuple= ] [ 2drop f ] if ;
|
|
|
|
: (delegates) ( obj -- )
|
|
[ dup , delegate (delegates) ] when* ;
|
|
|
|
: delegates ( obj -- seq )
|
|
[ dup ] [ [ delegate ] keep ] [ ] unfold nip ;
|
|
|
|
: is? ( obj quot -- ? ) >r delegates r> contains? ; inline
|
|
|
|
: >tuple ( seq -- tuple )
|
|
>vector dup first tuple-size over set-length
|
|
>array (>tuple) ;
|
|
|
|
M: tuple hashcode*
|
|
[
|
|
dup array-capacity -rot 0 -rot [
|
|
swapd array-nth hashcode* bitxor
|
|
] 2curry reduce
|
|
] recursive-hashcode ;
|
|
|
|
: tuple-slots ( tuple -- seq ) tuple>array 2 tail ;
|
|
|
|
! Definition protocol
|
|
M: tuple-class reset-class
|
|
{
|
|
"metaclass" "superclass" "slot-names" "slots"
|
|
} reset-props ;
|
|
|
|
M: object get-slots ( obj slots -- ... )
|
|
[ execute ] with each ;
|
|
|
|
M: object set-slots ( ... obj slots -- )
|
|
<reversed> get-slots ;
|
|
|
|
M: object construct-empty ( class -- tuple )
|
|
dup tuple-size <tuple> ;
|
|
|
|
M: object construct ( ... slots class -- tuple )
|
|
construct-empty [ swap set-slots ] keep ;
|
|
|
|
M: object construct-boa ( ... class -- tuple )
|
|
dup tuple-size <tuple-boa> ;
|