77 lines
1.9 KiB
Factor
77 lines
1.9 KiB
Factor
! Copyright (C) 2009, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays classes.tuple classes.tuple.private
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combinators combinators.smart fry functors kernel macros math parser
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sequences sequences.private ;
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FROM: inverse => undo ;
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IN: tuple-arrays
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ERROR: not-final class ;
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<PRIVATE
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MACRO: boa-unsafe ( class -- quot ) tuple-layout '[ _ <tuple-boa> ] ;
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: tuple-arity ( class -- quot ) '[ _ boa ] inputs ; inline
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: tuple-slice ( n seq -- slice )
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[ n>> [ * dup ] keep + ] [ seq>> ] bi <slice-unsafe> ; inline
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: read-tuple ( slice class -- tuple )
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'[ _ boa-unsafe ] input<sequence-unsafe ; inline
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MACRO: write-tuple ( class -- quot )
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[ '[ [ _ boa ] undo ] ]
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[ tuple-arity iota <reversed> [ '[ [ _ ] dip set-nth-unsafe ] ] map '[ _ cleave ] ]
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bi '[ _ dip @ ] ;
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: check-final ( class -- )
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{
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{ [ dup tuple-class? not ] [ not-a-tuple ] }
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{ [ dup final-class? not ] [ not-final ] }
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[ drop ]
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} cond ;
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PRIVATE>
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FUNCTOR: define-tuple-array ( CLASS -- )
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CLASS IS ${CLASS}
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CLASS-array DEFINES-CLASS ${CLASS}-array
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CLASS-array? IS ${CLASS-array}?
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<CLASS-array> DEFINES <${CLASS}-array>
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>CLASS-array DEFINES >${CLASS}-array
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WHERE
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CLASS check-final
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TUPLE: CLASS-array
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{ seq array read-only }
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{ n array-capacity read-only }
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{ length array-capacity read-only } ;
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: <CLASS-array> ( length -- tuple-array )
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[ \ CLASS [ initial-values <repetition> concat ] [ tuple-arity ] bi ] keep
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\ CLASS-array boa ; inline
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M: CLASS-array length length>> ; inline
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M: CLASS-array nth-unsafe tuple-slice \ CLASS read-tuple ; inline
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M: CLASS-array set-nth-unsafe tuple-slice \ CLASS write-tuple ; inline
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M: CLASS-array new-sequence drop <CLASS-array> ; inline
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: >CLASS-array ( seq -- tuple-array ) 0 <CLASS-array> clone-like ;
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M: CLASS-array like drop dup CLASS-array? [ >CLASS-array ] unless ; inline
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INSTANCE: CLASS-array sequence
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;FUNCTOR
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SYNTAX: TUPLE-ARRAY: scan-word define-tuple-array ;
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