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81 lines
2.5 KiB
Scheme
81 lines
2.5 KiB
Scheme
;;;; Copyright (C) 1999, 2000, 2005, 2006 Free Software Foundation, Inc.
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;;;;
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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 software; see the file COPYING. If not, write to
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;;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;;;; Boston, MA 02110-1301 USA
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;;;;
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(define-module (oop goops accessors)
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:use-module (oop goops)
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:re-export (standard-define-class)
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:export (define-class-with-accessors
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define-class-with-accessors-keywords))
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(define define-class-with-accessors
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(procedure->memoizing-macro
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(lambda (exp env)
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(let ((name (cadr exp))
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(supers (caddr exp))
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(slots (cdddr exp))
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(eat? #f))
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`(standard-define-class ,name ,supers
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,@(map-in-order
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(lambda (slot)
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(cond (eat?
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(set! eat? #f)
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slot)
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((keyword? slot)
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(set! eat? #t)
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slot)
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((pair? slot)
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(if (get-keyword #:accessor (cdr slot) #f)
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slot
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(let ((name (car slot)))
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`(,name #:accessor ,name ,@(cdr slot)))))
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(else
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`(,slot #:accessor ,slot))))
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slots))))))
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(define define-class-with-accessors-keywords
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(procedure->memoizing-macro
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(lambda (exp env)
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(let ((name (cadr exp))
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(supers (caddr exp))
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(slots (cdddr exp))
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(eat? #f))
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`(standard-define-class ,name ,supers
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,@(map-in-order
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(lambda (slot)
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(cond (eat?
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(set! eat? #f)
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slot)
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((keyword? slot)
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(set! eat? #t)
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slot)
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((pair? slot)
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(let ((slot
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(if (get-keyword #:accessor (cdr slot) #f)
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slot
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(let ((name (car slot)))
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`(,name #:accessor ,name ,@(cdr slot))))))
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(if (get-keyword #:init-keyword (cdr slot) #f)
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slot
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(let* ((name (car slot))
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(keyword (symbol->keyword name)))
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`(,name #:init-keyword ,keyword ,@(cdr slot))))))
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(else
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`(,slot #:accessor ,slot
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#:init-keyword ,(symbol->keyword slot)))))
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slots))))))
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