52 lines
1.5 KiB
Factor
Executable File
52 lines
1.5 KiB
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: effects words kernel sequences slots slots.private
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assocs parser mirrors namespaces math vocabs ;
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IN: new-slots
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: create-accessor ( name effect -- word )
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>r "accessors" create dup r>
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"declared-effect" set-word-prop ;
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: reader-effect T{ effect f { "object" } { "value" } } ; inline
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: reader-word ( name -- word )
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">>" append reader-effect create-accessor ;
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: define-reader ( class slot name -- )
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reader-word [ slot ] define-slot-word ;
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: writer-effect T{ effect f { "value" "object" } { } } ; inline
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: writer-word ( name -- word )
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">>" swap append writer-effect create-accessor ;
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: define-writer ( class slot name -- )
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writer-word [ set-slot ] define-slot-word ;
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: changer-effect T{ effect f { "object" "quot" } } ; inline
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: changer-word ( name -- word )
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"change-" swap append changer-effect create-accessor ;
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: define-changer ( name -- )
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dup changer-word dup deferred? [
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[
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[ over >r >r ] %
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over reader-word ,
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[ r> call r> ] %
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swap writer-word ,
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] [ ] make define
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] [ 2drop ] if ;
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: define-new-slot ( class slot name -- )
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dup define-changer 3dup define-reader define-writer ;
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: define-new-slots ( tuple-class -- )
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[ "slot-names" word-prop <enum> >alist ] keep
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[ swap first2 >r 4 + r> define-new-slot ] curry each ;
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: NEW-SLOTS: scan-word define-new-slots ; parsing
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"accessors" create-vocab drop
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