2004-12-13 00:13:54 -05:00
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! :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: generic
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USE: errors
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USE: hashtables
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USE: kernel
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USE: lists
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USE: namespaces
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USE: parser
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USE: strings
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USE: words
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USE: vectors
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! Builtin metaclass for builtin types: fixnum, word, cons, etc.
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SYMBOL: builtin
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builtin [
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"builtin-type" word-property unit
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] "builtin-supertypes" set-word-property
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2004-12-18 23:18:32 -05:00
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builtin [
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( vtable definition class -- )
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rot set-vtable
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] "add-method" set-word-property
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builtin 50 "priority" set-word-property
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2004-12-13 00:13:54 -05:00
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: builtin-predicate ( type# symbol -- word )
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predicate-word [
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swap [ swap type eq? ] cons define-compound
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] keep ;
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: builtin-class ( number type -- )
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dup undefined? [ dup define-symbol ] when
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2dup builtin-predicate
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dupd "predicate" set-word-property
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dup builtin "metaclass" set-word-property
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swap "builtin-type" set-word-property ;
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: BUILTIN:
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#! Followed by type name and type number. Define a built-in
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#! type predicate with this number.
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CREATE scan-word swap builtin-class ; parsing
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: builtin-type ( symbol -- n )
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"builtin-type" word-property ;
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