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Diffstat (limited to 'module/oop/goops/accessors.scm')
-rw-r--r-- | module/oop/goops/accessors.scm | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/module/oop/goops/accessors.scm b/module/oop/goops/accessors.scm new file mode 100644 index 000000000..5b05d3b15 --- /dev/null +++ b/module/oop/goops/accessors.scm @@ -0,0 +1,72 @@ +;;;; Copyright (C) 1999, 2000, 2005, 2006 Free Software Foundation, Inc. +;;;; +;;;; This library is free software; you can redistribute it and/or +;;;; modify it under the terms of the GNU Lesser General Public +;;;; License as published by the Free Software Foundation; either +;;;; version 3 of the License, or (at your option) any later version. +;;;; +;;;; This library is distributed in the hope that it will be useful, +;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;;;; Lesser General Public License for more details. +;;;; +;;;; You should have received a copy of the GNU Lesser General Public +;;;; License along with this library; if not, write to the Free Software +;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +;;;; + + +(define-module (oop goops accessors) + :use-module (oop goops) + :re-export (standard-define-class) + :export (define-class-with-accessors + define-class-with-accessors-keywords)) + +(define-macro (define-class-with-accessors name supers . slots) + (let ((eat? #f)) + `(standard-define-class + ,name ,supers + ,@(map-in-order + (lambda (slot) + (cond (eat? + (set! eat? #f) + slot) + ((keyword? slot) + (set! eat? #t) + slot) + ((pair? slot) + (if (get-keyword #:accessor (cdr slot) #f) + slot + (let ((name (car slot))) + `(,name #:accessor ,name ,@(cdr slot))))) + (else + `(,slot #:accessor ,slot)))) + slots)))) + +(define-macro (define-class-with-accessors-keywords name supers . slots) + (let ((eat? #f)) + `(standard-define-class + ,name ,supers + ,@(map-in-order + (lambda (slot) + (cond (eat? + (set! eat? #f) + slot) + ((keyword? slot) + (set! eat? #t) + slot) + ((pair? slot) + (let ((slot + (if (get-keyword #:accessor (cdr slot) #f) + slot + (let ((name (car slot))) + `(,name #:accessor ,name ,@(cdr slot)))))) + (if (get-keyword #:init-keyword (cdr slot) #f) + slot + (let* ((name (car slot)) + (keyword (symbol->keyword name))) + `(,name #:init-keyword ,keyword ,@(cdr slot)))))) + (else + `(,slot #:accessor ,slot + #:init-keyword ,(symbol->keyword slot))))) + slots)))) |