71 lines
2.4 KiB
Factor
71 lines
2.4 KiB
Factor
! :folding=indent:collapseFolds=1:
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! $Id$
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!
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! Copyright (C) 2004 Slava Pestov.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! 1. Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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!
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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IN: words
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USE: combinators
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USE: kernel
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USE: lists
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USE: logic
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USE: math
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USE: namespaces
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USE: stack
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: word-property ( word pname -- pvalue )
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swap word-plist assoc ;
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: set-word-property ( word pvalue pname -- )
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pick word-plist
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pick [ set-assoc ] [ remove-assoc nip ] ifte
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swap set-word-plist ;
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: ?word-primitive ( obj -- prim/0 )
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dup word? [ word-primitive ] [ drop 0 ] ifte ;
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: defined? ( obj -- ? ) ?word-primitive 0 = not ;
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: compound? ( obj -- ? ) ?word-primitive 1 = ;
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: primitive? ( obj -- ? ) ?word-primitive 2 > ;
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: symbol? ( obj -- ? ) ?word-primitive 2 = ;
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: comment?
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#! Comments are not first-class objects in CFactor.
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drop f ;
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: word ( -- word ) global [ "last-word" get ] bind ;
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: set-word ( word -- ) global [ "last-word" set ] bind ;
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: define-compound ( word def -- )
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over set-word-parameter
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1 over set-word-primitive
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f "parsing" set-word-property ;
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: define-symbol ( word -- )
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dup dup set-word-parameter
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2 swap set-word-primitive ;
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: stack-effect ( word -- str ) "stack-effect" word-property ;
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: documentation ( word -- str ) "documentation" word-property ;
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