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849cefacf1
* module/system/base/syntax.scm (define-record): Rework to separate the type and its constructor. Now (define-record (<foo> bar)) will create `make-foo' as the constructor, not `<foo>'. Also the constructor now takes either keyword or positional arguments, so that it can be used as the implementation of variant types as well. (|): Map directly to define-record instead of rolling our own thing. * module/language/scheme/translate.scm: * module/system/base/language.scm: * module/system/il/compile.scm: * module/system/il/ghil.scm: * module/system/il/glil.scm: * module/system/repl/common.scm: * module/system/vm/assemble.scm: * module/system/vm/debug.scm: Change instances of record creation to use the make-foo procedures instead of <foo>. Adjust module exports as necessary.
45 lines
1.4 KiB
Scheme
45 lines
1.4 KiB
Scheme
;;; Multi-language support
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;; Copyright (C) 2001 Free Software Foundation, Inc.
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(define-module (system base language)
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:use-syntax (system base syntax)
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:export (define-language lookup-language))
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;;;
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;;; Language class
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;;;
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(define-record (<language> name title version reader printer read-file
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(expander (lambda (x e) x))
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(translator (lambda (x e) x))
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(evaluator #f)
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(environment #f)
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))
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(define-macro (define-language name . spec)
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`(define ,name (,make-language :name ',name ,@spec)))
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(define (lookup-language name)
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(let ((m (resolve-module `(language ,name spec))))
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(if (module-bound? m name)
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(module-ref m name)
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(error "no such language" name))))
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