! :folding=indent:collapseFolds=1: ! $Id$ ! ! Copyright (C) 2004 Slava Pestov. ! ! Redistribution and use in source and binary forms, with or without ! modification, are permitted provided that the following conditions are met: ! ! 1. Redistributions of source code must retain the above copyright notice, ! this list of conditions and the following disclaimer. ! ! 2. Redistributions in binary form must reproduce the above copyright notice, ! this list of conditions and the following disclaimer in the documentation ! and/or other materials provided with the distribution. ! ! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, ! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND ! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, ! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, ! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR ! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. IN: generic USE: errors USE: hashtables USE: kernel USE: lists USE: namespaces USE: parser USE: strings USE: words USE: vectors ! Builtin metaclass for builtin types: fixnum, word, cons, etc. SYMBOL: builtin builtin [ "builtin-type" word-property unit ] "builtin-supertypes" set-word-property builtin [ ( vtable definition class -- ) rot set-vtable ] "add-method" set-word-property builtin 50 "priority" set-word-property : builtin-predicate ( type# symbol -- word ) predicate-word [ swap [ swap type eq? ] cons define-compound ] keep ; : builtin-class ( number type -- ) dup undefined? [ dup define-symbol ] when 2dup builtin-predicate dupd "predicate" set-word-property dup builtin "metaclass" set-word-property swap "builtin-type" set-word-property ; : BUILTIN: #! Followed by type name and type number. Define a built-in #! type predicate with this number. CREATE scan-word swap builtin-class ; parsing : builtin-type ( symbol -- n ) "builtin-type" word-property ;