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;;;; Objective-CL, an Objective-C bridge for Common Lisp.
;;;; Copyright (C) 2007 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)
;; FIXME: Document.
(defun define-returns-boolean-exception (selector-designator)
(let ((key (typecase selector-designator
(string selector-designator)
(t (selector-name (selector selector-designator))))))
(setf (gethash key *boolean-return-exceptions*) t)))
;; FIXME: Document.
(defun undefine-returns-boolean-exceptions (selector-designator)
(let ((key (typecase selector-designator
(string selector-designator)
(t (selector-name (selector selector-designator))))))
(remhash key *boolean-return-exceptions*)))
(define-returns-boolean-exception "charValue")
(define-returns-boolean-exception "characterAtIndex:")
(defun objc-char->lisp-value (objc-char receiver selector)
(declare (ignore receiver))
(if (gethash (selector-name selector) *boolean-return-exceptions* nil)
objc-char
(not (zerop objc-char))))
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