oop/goops/stklos.scm

   1 ;;;;    Copyright (C) 1999 Free Software Foundation, Inc.
   2 ;;;;
   3 ;;;; This program is free software; you can redistribute it and/or modify
   4 ;;;; it under the terms of the GNU General Public License as published by
   5 ;;;; the Free Software Foundation; either version 2, or (at your option)
   6 ;;;; any later version.
   7 ;;;;
   8 ;;;; This program is distributed in the hope that it will be useful,
   9 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 ;;;; GNU General Public License for more details.
  12 ;;;;
  13 ;;;; You should have received a copy of the GNU General Public License
  14 ;;;; along with this software; see the file COPYING.  If not, write to
  15 ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  16 ;;;; Boston, MA 02111-1307 USA
  17 ;;;;
  18 \f
  19
  20 (define-module (oop goops stklos)
  21   :use-module (oop goops internal)
  22   :no-backtrace
  23   )
  24
  25 ;;;
  26 ;;; This is the stklos compatibility module.
  27 ;;;
  28 ;;; WARNING: This module is under construction.  While we expect to be able
  29 ;;; to run most stklos code without problems in the future, this is not the
  30 ;;; case now.  The current compatibility is only superficial.
  31 ;;;
  32 ;;; Any comments/complaints/patches are welcome.  Tell us about
  33 ;;; your incompatibility problems (bug-guile@gnu.org).
  34 ;;;
  35
  36 ;; Export all bindings that are exported from (oop goops)...
  37 (module-for-each (lambda (sym var)
  38                    (module-add! %module-public-interface sym var))
  39                  (nested-ref the-root-module '(app modules oop goops
  40                                                    %module-public-interface)))
  41
  42 ;; ...but replace the following bindings:
  43 (export define-class define-method)
  44
  45 ;; Also export the following
  46 (export write-object)
  47
  48 ;;; Enable keyword support (*fixme*---currently this has global effect)
  49 (read-set! keywords 'prefix)
  50
  51 (define standard-define-class-transformer
  52   (macro-transformer standard-define-class))
  53
  54 (define define-class
  55   ;; Syntax
  56   (let ((name cadr)
  57         (supers caddr)
  58         (slots cadddr)
  59         (rest cddddr))
  60     (procedure->macro
  61       (lambda (exp env)
  62         (standard-define-class-transformer
  63          `(define-class ,(name exp) ,(supers exp) ,@(slots exp)
  64             ,@(rest exp))
  65          env)))))
  66
  67 (define define-method
  68   (procedure->memoizing-macro
  69     (lambda (exp env)
  70       (let ((name (cadr exp)))
  71         (if (and (pair? name)
  72                  (eq? (car name) 'setter)
  73                  (pair? (cdr name))
  74                  (null? (cddr name)))
  75             (let ((name (cadr name)))
  76               (cond ((not (symbol? name))
  77                      (goops-error "bad method name: ~S" name))
  78                     ((defined? name env)
  79                      `(begin
  80                         (if (not (is-a? ,name <generic-with-setter>))
  81                             (define-accessor ,name))
  82                         (add-method! (setter ,name) (method ,@(cddr exp)))))
  83                     (else
  84                      `(begin
  85                         (define-accessor ,name)
  86                         (add-method! (setter ,name) (method ,@(cddr exp)))))))
  87             (cond ((not (symbol? name))
  88                    (goops-error "bad method name: ~S" name))
  89                   ((defined? name env)
  90                    `(begin
  91                       (if (not (or (is-a? ,name <generic>)
  92                                    (is-a? ,name <primitive-generic>)))
  93                           (define-generic ,name))
  94                       (add-method! ,name (method ,@(cddr exp)))))
  95                   (else
  96                    `(begin
  97                       (define-generic ,name)
  98                       (add-method! ,name (method ,@(cddr exp)))))))))))