53 lines
1.1 KiB
Factor
53 lines
1.1 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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! Literal value
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TUPLE: literal < identity-tuple value recursion hashcode ;
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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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GENERIC: (literal) ( value -- literal )
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M: literal (literal) ;
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: literal ( value -- literal )
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known (literal) ;
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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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! Result of compose
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TUPLE: composed quot1 quot2 ;
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C: <composed> composed
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