37 lines
919 B
Factor
37 lines
919 B
Factor
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USING: kernel sbufs strings sequences assocs math
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combinators.lib vars lsys.strings combinators.short-circuit ;
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IN: lsys.strings.rewrite
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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VAR: rules
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: lookup ( str -- str ) [ 1 head rules> at ] [ ] bi or ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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VAR: accum
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: push-next ( next -- ) lookup accum> push-all ;
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: (rewrite) ( slice -- )
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{ { [ empty? ] [ drop ] }
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{ [ has-param? ] [ next+rest* [ push-next ] [ (rewrite) ] bi* ] }
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{ [ t ] [ next+rest [ push-next ] [ (rewrite) ] bi* ] } }
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switch ;
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: rewrite ( string -- string )
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dup length 10 * <sbuf> >accum
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<flat-slice> (rewrite)
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accum> >string ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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VAR: result
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: iterate ( -- ) result> rewrite >result ;
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: iterations ( n -- ) [ iterate ] times ;
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