35 lines
1.4 KiB
Factor
35 lines
1.4 KiB
Factor
! Copyright (C) 2008 Joe Groff.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors kernel classes.struct cocoa cocoa.runtime cocoa.types alien.data
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locals math sequences vectors fry libc destructors specialized-arrays ;
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SPECIALIZED-ARRAY: id
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IN: cocoa.enumeration
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CONSTANT: NS-EACH-BUFFER-SIZE 16
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: with-enumeration-buffers ( quot -- )
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'[
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NSFastEnumerationState malloc-struct &free
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NS-EACH-BUFFER-SIZE id malloc-array &free
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NS-EACH-BUFFER-SIZE
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@
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] with-destructors ; inline
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:: (NSFastEnumeration-each) ( ... object quot: ( ... elt -- ) state stackbuf count -- ... )
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object state stackbuf count -> countByEnumeratingWithState:objects:count: :> items-count
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items-count 0 = [
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state itemsPtr>> [ items-count id <c-direct-array> ] [ stackbuf ] if* :> items
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items-count iota [ items nth quot call ] each
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object quot state stackbuf count (NSFastEnumeration-each)
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] unless ; inline recursive
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: NSFastEnumeration-each ( ... object quot: ( ... elt -- ... ) -- ... )
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[ (NSFastEnumeration-each) ] with-enumeration-buffers ; inline
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: NSFastEnumeration-map ( ... object quot: ( ... elt -- ... newelt ) -- ... vector )
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NS-EACH-BUFFER-SIZE <vector>
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[ '[ @ _ push ] NSFastEnumeration-each ] keep ; inline
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: NSFastEnumeration>vector ( object -- vector )
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[ ] NSFastEnumeration-map ;
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