36 lines
878 B
Factor
Executable File
36 lines
878 B
Factor
Executable File
! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: functors sequences sequences.private kernel words classes
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math alien alien.c-types byte-arrays accessors
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specialized-arrays ;
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IN: specialized-arrays.direct.functor
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FUNCTOR: define-direct-array ( T -- )
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A' IS ${T}-array
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>A' IS >${T}-array
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<A'> IS <${A'}>
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A DEFINES-CLASS direct-${T}-array
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<A> DEFINES <${A}>
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NTH [ T dup c-type-getter-boxer array-accessor ]
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SET-NTH [ T dup c-setter array-accessor ]
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WHERE
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TUPLE: A
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{ underlying c-ptr read-only }
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{ length fixnum read-only } ;
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: <A> ( alien len -- direct-array ) A boa ; inline
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M: A length length>> ;
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M: A nth-unsafe underlying>> NTH call ;
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M: A set-nth-unsafe underlying>> SET-NTH call ;
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M: A like drop dup A instance? [ >A' ] unless ;
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M: A new-sequence drop <A'> ;
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INSTANCE: A sequence
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;FUNCTOR
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