103 lines
2.3 KiB
Factor
103 lines
2.3 KiB
Factor
! Copyright (C) 2004, 2006 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: kernel
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USING: generic kernel-internals math-internals ;
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: 2swap ( x y z t -- z t x y ) rot >r rot r> ; inline
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: clear V{ } set-datastack ;
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GENERIC: hashcode ( obj -- n ) flushable
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M: object hashcode drop 0 ;
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GENERIC: hashcode* ( n obj -- n ) flushable
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M: object hashcode* nip hashcode ;
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GENERIC: = ( obj obj -- ? ) flushable
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M: object = eq? ;
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GENERIC: <=> ( obj1 obj2 -- n ) flushable
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GENERIC: clone ( obj -- obj ) flushable
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M: object clone ;
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: set-boot ( quot -- ) 8 setenv ;
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: num-types ( -- n ) 19 ; inline
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: ? ( cond t f -- t/f ) rot [ drop ] [ nip ] if ; inline
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: >boolean t f ? ; inline
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: and ( a b -- a&b ) f ? ; inline
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: or ( a b -- a|b ) t swap ? ; inline
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: cpu ( -- arch ) 7 getenv ;
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: os ( -- os ) 11 getenv ;
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: windows? ( -- ? ) os "win32" = ;
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: macosx? os "macosx" = ;
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: slip >r call r> ; inline
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: 2slip >r >r call r> r> ; inline
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: keep over >r call r> ; inline
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: 2keep over >r pick >r call r> r> ; inline
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: 3keep >r 3dup r> swap >r swap >r swap >r call r> r> r> ;
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inline
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: 2apply tuck 2slip call ; inline
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: if* pick [ drop call ] [ 2nip call ] if ; inline
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: ?if >r >r [ nip r> r> drop call ] [ r> drop r> call ] if* ;
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inline
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: unless [ ] swap if ; inline
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: unless* over [ drop ] [ nip call ] if ; inline
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: when [ ] if ; inline
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: when* dupd [ drop ] if ; inline
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: with ( obj quot elt -- obj quot )
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pick pick >r >r swap call r> r> ; inline
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: keep-datastack datastack slip set-datastack drop ; inline
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M: wrapper =
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over wrapper? [ [ wrapped ] 2apply = ] [ 2drop f ] if ;
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GENERIC: literalize ( obj -- obj )
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M: object literalize ;
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M: wrapper literalize <wrapper> ;
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IN: kernel-internals
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! These words are unsafe. Don't use them.
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: array-capacity 1 slot ; inline
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: array-nth swap 2 fixnum+ slot ; inline
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: set-array-nth swap 2 fixnum+ set-slot ; inline
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: make-tuple <tuple> [ 2 set-slot ] keep ; flushable
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! Some runtime implementation details
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: tag-mask BIN: 111 ; inline
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: num-tags 8 ; inline
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: tag-bits 3 ; inline
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: fixnum-tag BIN: 000 ; inline
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: bignum-tag BIN: 001 ; inline
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: cons-tag BIN: 010 ; inline
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: object-tag BIN: 011 ; inline
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: ratio-tag BIN: 100 ; inline
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: float-tag BIN: 101 ; inline
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: complex-tag BIN: 110 ; inline
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: cell 17 getenv ; foldable
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