67 lines
1.4 KiB
Factor
67 lines
1.4 KiB
Factor
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IN: kernel
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USE: arithmetic
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USE: combinators
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USE: lists
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USE: logic
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USE: namespaces
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USE: stack
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USE: strings
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USE: vectors
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USE: words
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: hashcode ( obj -- hash )
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#! If two objects are =, they must have equal hashcodes.
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[
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[ cons? ] [ 4 cons-hashcode ]
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[ string? ] [ str-hashcode ]
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[ fixnum? ] [ ( return the object ) ]
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[ drop t ] [ drop 0 ]
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] cond ;
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: = ( obj obj -- ? )
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#! Push t if a is isomorphic to b.
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2dup eq? [
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2drop t
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] [
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[
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[ cons? ] [ cons= ]
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[ string? ] [ str= ]
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[ drop t ] [ 2drop f ]
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] cond
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] ifte ;
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: clone ( obj -- obj )
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[
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[ cons? ] [ clone-list ]
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[ vector? ] [ clone-vector ]
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[ drop t ] [ ( return the object ) ]
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] cond ;
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: class-of ( obj -- name )
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[
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[ fixnum? ] [ drop "fixnum" ]
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[ cons? ] [ drop "cons" ]
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[ word? ] [ drop "word" ]
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[ f = ] [ drop "f" ]
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[ t = ] [ drop "t" ]
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[ vector? ] [ drop "vector" ]
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[ string? ] [ drop "string" ]
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[ sbuf? ] [ drop "sbuf" ]
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[ handle? ] [ drop "handle" ]
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[ drop t ] [ drop "unknown" ]
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] cond ;
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: toplevel ( -- )
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0 <vector> set-datastack
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0 <vector> set-namestack
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global >n
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0 <vector> set-callstack ;
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!!! HACK
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IN: strings
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: >upper ;
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: >lower ;
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IN: lists
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: sort ;
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