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60 lines
2 KiB
Scheme
60 lines
2 KiB
Scheme
;;; installed-scm-file
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;;;; Copyright (C) 2001, 2006 Free Software Foundation, Inc.
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;;;;
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 2.1 of the License, or (at your option) any later version.
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;;;;
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;;;; This library 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 GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;;;
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(define-module (oop goops old-define-method)
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:use-module (oop goops)
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:export (define-method)
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:no-backtrace
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)
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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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(symbol? (cadr 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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;; *fixme* Temporary hack for the current module system
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(if (not ,name)
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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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;; *fixme* Temporary hack for the current module system
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(if (not ,name)
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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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