| 1 | ;; Common Lisp bindings for GTK+ v2.0 |
| 2 | ;; Copyright (C) 1999-2000 Espen S. Johnsen <espejohn@online.no> |
| 3 | ;; |
| 4 | ;; This library is free software; you can redistribute it and/or |
| 5 | ;; modify it under the terms of the GNU Lesser General Public |
| 6 | ;; License as published by the Free Software Foundation; either |
| 7 | ;; version 2 of the License, or (at your option) any later version. |
| 8 | ;; |
| 9 | ;; This library is distributed in the hope that it will be useful, |
| 10 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | ;; Lesser General Public License for more details. |
| 13 | ;; |
| 14 | ;; You should have received a copy of the GNU Lesser General Public |
| 15 | ;; License along with this library; if not, write to the Free Software |
| 16 | ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | |
| 18 | ;; $Id: gutils.lisp,v 1.3 2000/10/05 17:18:28 espen Exp $ |
| 19 | |
| 20 | |
| 21 | (in-package "KERNEL") |
| 22 | |
| 23 | (defun type-expand-1 (form) |
| 24 | (let ((def (cond ((symbolp form) |
| 25 | (info type expander form)) |
| 26 | ((and (consp form) (symbolp (car form))) |
| 27 | (info type expander (car form))) |
| 28 | (t nil)))) |
| 29 | (if def |
| 30 | (values (funcall def (if (consp form) form (list form))) t) |
| 31 | (values form nil)))) |
| 32 | |
| 33 | |
| 34 | (in-package "GLIB") |
| 35 | |
| 36 | |
| 37 | (defun type-expand-to (type form) |
| 38 | (labels ((expand (form0) |
| 39 | (if (eq (first (mklist form0)) type) |
| 40 | form0 |
| 41 | (multiple-value-bind (expanded-form expanded-p) |
| 42 | (type-expand-1 form0) |
| 43 | (if expanded-p |
| 44 | (expand expanded-form) |
| 45 | (error "~A can not be expanded to ~A" form type)))))) |
| 46 | (expand form))) |
| 47 | |
| 48 | (defmacro with-gc-disabled (&body body) |
| 49 | (let ((gc-inhibit (make-symbol "GC-INHIBIT"))) |
| 50 | `(progn |
| 51 | (let ((,gc-inhibit lisp::*gc-inhibit*)) |
| 52 | (ext:gc-off) |
| 53 | (unwind-protect |
| 54 | ,@body |
| 55 | (unless ,gc-inhibit |
| 56 | (ext:gc-on))))))) |
| 57 | |
| 58 | (defun mklist (obj) |
| 59 | (if (atom obj) (list obj) obj)) |
| 60 | |
| 61 | (defun namep (obj) |
| 62 | (and (symbolp obj) (not (member obj '(t nil))))) |
| 63 | |
| 64 | (defun all-equal (&rest objects) |
| 65 | (or |
| 66 | (null objects) |
| 67 | (null (rest objects)) |
| 68 | (and |
| 69 | (equal (first objects) (second objects)) |
| 70 | (apply #'all-equal (rest objects))))) |
| 71 | |
| 72 | (defun neq (obj1 obj2) |
| 73 | (not (eq obj1 obj2))) |
| 74 | |
| 75 | (defmacro return-if (form) |
| 76 | (let ((result (make-symbol "RESULT"))) |
| 77 | `(let ((,result ,form)) |
| 78 | (when ,result |
| 79 | (return ,result))))) |
| 80 | |
| 81 | (defun make-pointer (address) |
| 82 | (int-sap address)) |
| 83 | |
| 84 | (defun null-pointer-p (pointer) |
| 85 | (zerop (sap-int pointer))) |
| 86 | |
| 87 | |
| 88 | (defmacro when-bind ((var expr) &body body) |
| 89 | `(let ((,var ,expr)) |
| 90 | (when ,var |
| 91 | ,@body))) |
| 92 | |
| 93 | |
| 94 | (defmacro assoc-ref (key alist &key (test #'eq)) |
| 95 | `(cdr (assoc ,key ,alist :test ,test))) |
| 96 | |
| 97 | |
| 98 | (defmacro assoc-lref (key alist &key (test #'eq)) |
| 99 | `(cadr (assoc ,key ,alist :test ,test))) |
| 100 | |
| 101 | |
| 102 | (defun assoc-rem (key alist &key (test #'eq)) |
| 103 | (remove-if #'(lambda (element) (funcall test key (car element))) alist)) |
| 104 | |
| 105 | |
| 106 | (defun assoc-delete (key alist &key (test #'eq)) |
| 107 | (delete-if #'(lambda (element) (funcall test key (car element))) alist)) |
| 108 | |
| 109 | |
| 110 | (defun funcallable (object) |
| 111 | (if (consp object) |
| 112 | (fdefinition object) |
| 113 | object)) |
| 114 | |