76 lines
1.9 KiB
Factor
76 lines
1.9 KiB
Factor
! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors namespaces kernel assocs sequences
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stack-checker.recursive-state ;
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IN: stack-checker.values
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! Values
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: <value> ( -- value ) \ <value> counter ;
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SYMBOL: known-values
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: init-known-values ( -- )
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H{ } clone known-values set ;
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: known ( value -- known ) known-values get at ;
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: set-known ( known value -- )
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over [ known-values get set-at ] [ 2drop ] if ;
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: make-known ( known -- value )
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<value> [ set-known ] keep ;
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: copy-value ( value -- value' )
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known make-known ;
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: copy-values ( values -- values' )
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[ copy-value ] map ;
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GENERIC: (literal-value?) ( value -- ? )
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M: object (literal-value?) drop f ;
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GENERIC: (literal) ( value -- literal )
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! Literal value
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TUPLE: literal < identity-tuple value recursion hashcode ;
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: literal ( value -- literal ) known (literal) ;
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: literal-value? ( value -- ? ) known (literal-value?) ;
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M: literal hashcode* nip hashcode>> ;
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: <literal> ( obj -- value )
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recursive-state get over hashcode \ literal boa ;
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M: literal (literal-value?) drop t ;
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M: literal (literal) ;
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: curried/composed-literal ( input1 input2 quot -- literal )
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[ [ literal ] bi@ ] dip
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[ [ [ value>> ] bi@ ] dip call ] [ drop nip recursion>> ] 3bi
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over hashcode \ literal boa ; inline
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! Result of curry
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TUPLE: curried obj quot ;
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C: <curried> curried
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: >curried< ( curried -- obj quot )
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[ obj>> ] [ quot>> ] bi ; inline
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M: curried (literal-value?) >curried< [ literal-value? ] both? ;
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M: curried (literal) >curried< [ curry ] curried/composed-literal ;
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! Result of compose
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TUPLE: composed quot1 quot2 ;
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C: <composed> composed
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: >composed< ( composed -- quot1 quot2 )
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[ quot1>> ] [ quot2>> ] bi ; inline
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M: composed (literal-value?) >composed< [ literal-value? ] both? ;
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M: composed (literal) >composed< [ compose ] curried/composed-literal ; |