org.armedbear.lisp.package.lisp Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of abcl Show documentation
Show all versions of abcl Show documentation
Common Lisp implementation running on the JVM
;;; package.lisp
;;;
;;; Copyright (C) 2008 Erik Huelsmann
;;; $Id$
;;;
;;; This program is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License
;;; as published by the Free Software Foundation; either version 2
;;; 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
;;;
;;; As a special exception, the copyright holders of this library give you
;;; permission to link this library with independent modules to produce an
;;; executable, regardless of the license terms of these independent
;;; modules, and to copy and distribute the resulting executable under
;;; terms of your choice, provided that you also meet, for each linked
;;; independent module, the terms and conditions of the license of that
;;; module. An independent module is a module which is not derived from
;;; or based on this library. If you modify this library, you may extend
;;; this exception to your version of the library, but you are not
;;; obligated to do so. If you do not wish to do so, delete this
;;; exception statement from your version.
(in-package "SYSTEM")
;; Redefines make-package from boot.lisp
(defun make-package (name &key nicknames use)
(restart-case
(progn
(when (find-package name)
(error 'simple-error "Package ~A already exists." name))
(dolist (nick nicknames)
(when (find-package nick)
(error 'package-error :package nick)))
(%make-package name nicknames use))
(use-existing-package ()
:report "Use existing package"
(return-from make-package (find-package name)))))
;; Redefines function from defpackage.lisp, because there it's lacking restart-case
(defun ensure-available-symbols (imports)
(remove nil
(mapcar #'(lambda (package-and-symbols)
(let* ((package (find-package (designated-package-name (car package-and-symbols))))
(new-symbols
(remove nil
(mapcar #'(lambda (sym)
(restart-case
(progn
(unless (nth-value 1 (find-symbol sym package))
(error 'package-error
"The symbol ~A is not present in package ~A." sym (package-name package)))
sym)
(skip ()
:report "Skip this symbol."
nil)))
(cdr package-and-symbols)))))
(when new-symbols
(cons package new-symbols))))
imports)))
(defun import (symbols &optional (package *package* package-supplied-p))
(dolist (symbol (if (listp symbols) symbols (list symbols)))
(let* ((sym-name (string symbol))
(local-sym (find-symbol sym-name package)))
(restart-case
(progn
(when (and local-sym (not (eql symbol local-sym)))
(error 'package-error
"Different symbol (~A) with the same name already accessible in package ~A."
local-sym (package-name package)))
(if package-supplied-p
(%import (list symbol) package) ;; in order to pass NIL, wrap in a list
(%import (list symbol))))
(unintern-existing ()
:report (lambda (s) (format s "Unintern ~S and continue" local-sym))
(unintern local-sym)
(%import symbol))
(skip ()
:report "Skip symbol"))))
T)
(defun delete-package (package)
(with-simple-restart (continue "Ignore missing package.")
(sys::%delete-package package)))
(defun add-package-local-nickname (local-nickname actual-package
&optional (package-designator *package*))
(let* ((local-nickname (string local-nickname))
(package-designator (or (find-package package-designator)
(error "Package ~A not found" package-designator)))
(actual-package (or (find-package actual-package)
(error "Package ~A not found" actual-package))))
(when (member local-nickname '("CL" "COMMON-LISP" "KEYWORD")
:test #'string=)
(cerror "Continue anyway"
"Trying to define a local nickname called ~A" local-nickname))
(when (member local-nickname (list* (package-name package-designator)
(package-nicknames package-designator))
:test #'string=)
(cerror "Continue anyway"
"Trying to override the name or nickname ~A for package ~A ~
with a local nickname for another package ~A"
local-nickname package-designator actual-package))
(sys::%add-package-local-nickname local-nickname actual-package
package-designator)))