49 lines
1.1 KiB
Factor
49 lines
1.1 KiB
Factor
! Copyright (C) 2006, 2007 Slava Pestov.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: arrays sequences sequences.private
|
|
kernel kernel.private math assocs quotations.private ;
|
|
IN: quotations
|
|
|
|
M: wrapper equal?
|
|
over wrapper? [ [ wrapped ] 2apply = ] [ 2drop f ] if ;
|
|
|
|
UNION: callable quotation curry ;
|
|
|
|
M: callable equal?
|
|
over callable? [ sequence= ] [ 2drop f ] if ;
|
|
|
|
: <quotation> ( n -- quot )
|
|
f <array> array>quotation ; inline
|
|
|
|
M: quotation length quotation-array length ;
|
|
|
|
M: quotation nth-unsafe quotation-array nth-unsafe ;
|
|
|
|
: >quotation ( seq -- quot )
|
|
>array array>quotation ; inline
|
|
|
|
M: quotation like drop dup quotation? [ >quotation ] unless ;
|
|
|
|
INSTANCE: quotation immutable-sequence
|
|
|
|
: 1quotation ( obj -- quot ) 1array >quotation ;
|
|
|
|
GENERIC: literalize ( obj -- wrapped )
|
|
|
|
M: object literalize ;
|
|
|
|
M: wrapper literalize <wrapper> ;
|
|
|
|
M: curry length curry-quot length 1+ ;
|
|
|
|
M: curry nth
|
|
over zero? [
|
|
nip curry-obj literalize
|
|
] [
|
|
>r 1- r> curry-quot nth
|
|
] if ;
|
|
|
|
M: curry like drop dup callable? [ >quotation ] unless ;
|
|
|
|
INSTANCE: curry immutable-sequence
|