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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)
;;; (@* "Message and selector names")
(defun message-component->string (symbol)
(let* ((components (split-sequence #\- (symbol-name symbol)
:remove-empty-subseqs t))
(downcasep (notany #'lower-case-p (symbol-name symbol)))
(acc-string
(reduce #'(lambda (x y) (concatenate 'string x y))
(mapcar #'(lambda (x)
(if downcasep
(concatenate 'string
(string (char x 0))
(string-downcase (subseq x 1)))
x))
(subseq components 1))
:initial-value (if downcasep
(string-downcase (first components))
(first components)))))
(if (eql (find-package '#:keyword)
(symbol-package symbol))
(concatenate 'string acc-string ":")
acc-string)))
(defun symbol-list->message-name (symbol-list)
(reduce #'(lambda (acc symbol)
(concatenate 'string acc (message-component->string symbol)))
symbol-list
:initial-value ""))
;;; (@* "Class names")
(defun symbol->objc-class-name (symbol)
(let ((components (split-sequence #\- (symbol-name symbol)
:remove-empty-subseqs t)))
(reduce #'(lambda (x y) (concatenate 'string x y))
(mapcar #'(lambda (x)
(concatenate 'string
(string (char x 0))
(string-downcase (subseq x 1))))
(subseq components 1))
:initial-value (concatenate 'string
(string (char (first components) 0))
(string-upcase
(subseq (first components) 1))))))
(defun objc-class-name->symbol (class-name)
(let ((prefix-end (1- (position-if #'lower-case-p class-name))))
(cond ((and prefix-end (> prefix-end 0))
;; There are n upper case chars at the head of the name.
;; Take the first (1- n) of them and downcase them. Then,
;; put a dash right after them and downcase the n'th char as
;; well, such that "NSFoo" becomes "ns-foo".
(setq class-name (concatenate 'string
(string-downcase
(subseq class-name 0 prefix-end))
"-"
(string
(char-downcase
(char class-name prefix-end)))
(subseq class-name (1+ prefix-end)))))
((and prefix-end (zerop prefix-end))
;; There is exactly one upper case char at the head of the
;; name. just downcase it and move on.
(setq class-name (copy-seq class-name))
(setf (char class-name 0) (char-downcase (char class-name 0))))))
(loop for delim-position = (position-if #'upper-case-p class-name)
while delim-position
do (setq class-name (concatenate 'string
(subseq class-name 0 delim-position)
"-"
(string
(char-downcase
(char class-name delim-position)))
(subseq class-name (1+ delim-position)))))
(let ((*package* (find-package '#:objective-c-classes)))
;; Why do we use READ-FROM-STRING rather than MAKE-SYMBOL? That is
;; because we want this procedure to work as expected for any value
;; of (READTABLE-CASE *READTABLE*), which means that 'ns-object
;; should always mean the same thing as "NSObject".
(read-from-string class-name)))
(defun objc-meta-class-name->symbol (meta-class-name)
(let ((*package* (find-package '#:objective-c-classes)))
(read-from-string
(concatenate 'string
"%"
(symbol-name (objc-class-name->symbol meta-class-name))))))
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