29 lines
728 B
Factor
29 lines
728 B
Factor
! (c)2009 Joe Groff bsd license
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USING: accessors assocs classes.tuple generalizations kernel
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locals quotations sequences ;
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IN: combinators.tuple
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<PRIVATE
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:: (tuple-slot-quot) ( slot assoc n -- quot )
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slot name>> assoc at [
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slot initial>> :> initial
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{ n ndrop initial } >quotation
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] unless* ;
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PRIVATE>
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MACRO:: nmake-tuple ( class assoc n -- quot )
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class all-slots [ assoc n (tuple-slot-quot) ] map :> quots
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class <wrapper> :> \class
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{ quots n ncleave \class boa } >quotation ;
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: make-tuple ( x class assoc -- tuple )
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1 nmake-tuple ; inline
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: 2make-tuple ( x y class assoc -- tuple )
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2 nmake-tuple ; inline
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: 3make-tuple ( x y z class assoc -- tuple )
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3 nmake-tuple ; inline
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