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9ffa41dbae
implicit redefines only happen on top level. * goops.scm (define-class, define-generic, define-accessor), goops/stklos.scm (define-class): Use mmacros instead of macros.
122 lines
4.4 KiB
Scheme
122 lines
4.4 KiB
Scheme
;;;; Copyright (C) 1999,2002 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., 59 Temple Place, Suite 330,
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;;;; Boston, MA 02111-1307 USA
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;;;;
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;;;; As a special exception, the Free Software Foundation gives permission
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;;;; for additional uses of the text contained in its release of GUILE.
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;;;;
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;;;; The exception is that, if you link the GUILE library with other files
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;;;; to produce an executable, this does not by itself cause the
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;;;; resulting executable to be covered by the GNU General Public License.
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;;;; Your use of that executable is in no way restricted on account of
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;;;; linking the GUILE library code into it.
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;;;;
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;;;; This exception does not however invalidate any other reasons why
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;;;; the executable file might be covered by the GNU General Public License.
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;;;;
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;;;; This exception applies only to the code released by the
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;;;; Free Software Foundation under the name GUILE. If you copy
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;;;; code from other Free Software Foundation releases into a copy of
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;;;; GUILE, as the General Public License permits, the exception does
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;;;; not apply to the code that you add in this way. To avoid misleading
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;;;; anyone as to the status of such modified files, you must delete
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;;;; this exception notice from them.
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;;;;
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;;;; If you write modifications of your own for GUILE, it is your choice
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;;;; whether to permit this exception to apply to your modifications.
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;;;; If you do not wish that, delete this exception notice.
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;;;;
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(define-module (oop goops stklos)
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:use-module (oop goops internal)
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:no-backtrace
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)
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;;;
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;;; This is the stklos compatibility module.
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;;;
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;;; WARNING: This module is under construction. While we expect to be able
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;;; to run most stklos code without problems in the future, this is not the
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;;; case now. The current compatibility is only superficial.
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;;;
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;;; Any comments/complaints/patches are welcome. Tell us about
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;;; your incompatibility problems (bug-guile@gnu.org).
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;;;
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;; Export all bindings that are exported from (oop goops)...
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(module-for-each (lambda (sym var)
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(module-add! %module-public-interface sym var))
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(nested-ref the-root-module '(app modules oop goops
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%module-public-interface)))
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;; ...but replace the following bindings:
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(export define-class define-method)
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;; Also export the following
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(export write-object)
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;;; Enable keyword support (*fixme*---currently this has global effect)
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(read-set! keywords 'prefix)
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(define standard-define-class-transformer
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(macro-transformer standard-define-class))
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(define define-class
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;; Syntax
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(let ((name cadr)
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(supers caddr)
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(slots cadddr)
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(rest cddddr))
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(procedure->memoizing-macro
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(lambda (exp env)
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(standard-define-class-transformer
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`(define-class ,(name exp) ,(supers exp) ,@(slots exp)
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,@(rest exp))
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env)))))
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(define define-method
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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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(if (and (pair? name)
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(eq? (car name) 'setter)
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(pair? (cdr name))
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(null? (cddr name)))
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(let ((name (cadr name)))
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(cond ((not (symbol? name))
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(goops-error "bad method name: ~S" name))
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((defined? name env)
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`(begin
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(if (not (is-a? ,name <generic-with-setter>))
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(define-accessor ,name))
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(add-method! (setter ,name) (method ,@(cddr exp)))))
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(else
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`(begin
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(define-accessor ,name)
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(add-method! (setter ,name) (method ,@(cddr exp)))))))
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(cond ((not (symbol? name))
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(goops-error "bad method name: ~S" name))
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((defined? name env)
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`(begin
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(if (not (or (is-a? ,name <generic>)
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(is-a? ,name <primitive-generic>)))
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(define-generic ,name))
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(add-method! ,name (method ,@(cddr exp)))))
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(else
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`(begin
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(define-generic ,name)
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(add-method! ,name (method ,@(cddr exp)))))))))))
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