factor/library/platform/native/words.factor

! :folding=indent:collapseFolds=1:

! $Id$
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! Copyright (C) 2004 Slava Pestov.
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IN: words
USE: combinators
USE: kernel
USE: lists
USE: logic
USE: namespaces
USE: stack
USE: vocabularies

: word-property ( pname word -- pvalue )
    word-plist assoc ;

: set-word-property ( pvalue pname word -- )
    dup >r word-plist set-assoc r> set-word-plist ;

: defined? ( obj -- ? )
    dup word? [ word-primitive 0 = not ] [ drop f ] ifte ;

: compound? ( obj -- ? )
    dup word? [ word-primitive 1 = ] [ drop f ] ifte ;

: primitive? ( obj -- ? )
    dup word? [ word-primitive 1 = not ] [ drop f ] ifte ;

! Various features not supported by native Factor.
: comment? drop f ;
: worddef>list word-parameter ;

! Bad idea

IN: kernel

: word ( -- word )
    global [ "last-word" get ] bind ;

: set-word ( word -- )
    global [ "last-word" set ] bind ;

IN: builtins

: define ( word definition -- )
    #! Unlike the Java interpreter primitive define, the
    #! definition parameter is a list.
    over set-word
    over set-word-parameter
    1 swap set-word-primitive ;