38 lines
1.1 KiB
Factor
38 lines
1.1 KiB
Factor
! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: vectors
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USING: errors generic kernel kernel-internals lists math
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math-internals sequences ;
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M: vector set-length ( len vec -- ) grow-length ;
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M: vector nth ( n vec -- obj ) bounds-check underlying array-nth ;
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M: vector set-nth ( obj n vec -- )
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growable-check 2dup ensure underlying set-array-nth ;
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M: vector hashcode ( vec -- n )
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dup length 0 number= [ drop 0 ] [ first hashcode ] ifte ;
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: empty-vector ( len -- vec )
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dup <vector> [ set-length ] keep ; inline
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: >vector ( list -- vector )
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dup length <vector> [ swap nappend ] keep ; inline
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M: object thaw >vector ;
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M: vector clone ( vector -- vector ) >vector ;
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M: general-list like drop >list ;
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M: vector like drop >vector ;
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: (1vector) [ push ] keep ; inline
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: (2vector) [ swapd push ] keep (1vector) ; inline
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: (3vector) [ >r rot r> push ] keep (2vector) ; inline
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: 1vector ( x -- { x } ) 1 <vector> (1vector) ; flushable
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: 2vector ( x y -- { x y } ) 2 <vector> (2vector) ; flushable
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: 3vector ( x y z -- { x y z } ) 3 <vector> (3vector) ; flushable
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