52 lines
1.1 KiB
Factor
Executable File
52 lines
1.1 KiB
Factor
Executable File
! Copyright (C) 2003, 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel math.private sequences kernel.private
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math sequences.private slots.private byte-arrays
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alien.accessors ;
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IN: strings
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<PRIVATE
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: string-hashcode 3 slot ; inline
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: set-string-hashcode 3 set-slot ; inline
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: reset-string-hashcode f swap set-string-hashcode ; inline
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: rehash-string ( str -- )
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1 over sequence-hashcode swap set-string-hashcode ; inline
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PRIVATE>
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M: string equal?
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over string? [
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over hashcode over hashcode number=
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[ sequence= ] [ 2drop f ] if
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] [
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2drop f
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] if ;
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M: string hashcode*
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nip dup string-hashcode [ ]
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[ dup rehash-string string-hashcode ] ?if ;
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M: string nth-unsafe
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>r >fixnum r> string-nth ;
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M: string set-nth-unsafe
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dup reset-string-hashcode
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>r >fixnum >r >fixnum r> r> set-string-nth ;
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M: string clone
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(clone) dup string-aux clone over set-string-aux ;
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M: string resize resize-string ;
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: 1string ( ch -- str ) 1 swap <string> ;
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: >string ( seq -- str ) "" clone-like ;
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M: string new drop 0 <string> ;
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INSTANCE: string sequence
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