diff options
Diffstat (limited to 'Lisp/type-conversion.lisp')
| -rw-r--r-- | Lisp/type-conversion.lisp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Lisp/type-conversion.lisp b/Lisp/type-conversion.lisp new file mode 100644 index 0000000..6eca43b --- /dev/null +++ b/Lisp/type-conversion.lisp @@ -0,0 +1,43 @@ +;;;; Objective-CL, an Objective-C bridge for Common Lisp. +;;;; Copyright (C) 2007, 2008 Matthias Andreas Benkard. +;;;; +;;;; This program 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 program 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 program. If not, see +;;;; <http://www.gnu.org/licenses/>. + +(in-package #:mulk.objective-cl) + + +(defun convert-from-foreign-value (foreign-value-cell typespec + skip-retaining-p char-is-bool-p) + (let ((c-type (typespec->c-type typespec))) + (case (or (typespec-nominal-type typespec) + (typespec-primary-type typespec)) + ((id objective-c-class exception selector) + (let ((*skip-retaining* + skip-retaining-p)) + (intern-pointer-wrapper (car typespec) + :pointer (cffi:mem-ref foreign-value-cell + c-type)))) + ((:char :unsigned-char) + ;; FIXME? This is non-trivial. See policy.lisp for + ;; details. + (objc-char->lisp-value (cffi:mem-ref foreign-value-cell c-type) + char-is-bool-p)) + ((struct union) + ;; The caller is responsible for preventing the return + ;; value from being garbage-collected by setting + ;; FOREIGN-VALUE-LISP-MANAGED-P to false. + (make-struct-wrapper foreign-value-cell typespec t)) + ((:void) (values)) + (otherwise (cffi:mem-ref foreign-value-cell c-type)))))
\ No newline at end of file |