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;;; -*- Mode: LISP; Syntax: Common-lisp; Base: 10; Package: (DEFPACKAGE :COLON-MODE :EXTERNAL) -*-
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;;; BOEING COMPUTER SERVICES
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;;; RESEARCH AND TECHNOLOGY
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;;; P.O. BOX 24346, MS 7L-64
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;;; SEATTLE, WA 98124-0346
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;;; Copyright (c) 1990, 1991 The Boeing Company, All Rights Reserved.
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;;; Permission is granted to any individual or institution to use,
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;;; copy, modify, and distribute this software, provided that this
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;;; complete copyright and permission notice is maintained, intact, in
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;;; all copies and supporting documentation and that modifications are
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;;; appropriately documented with date, author and description of the
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;;; Stephen L. Nicoud (snicoud@boeing.com) provides this software "as
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;;; is" without express or implied warranty by him or The Boeing
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;;; This software is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY. No author or distributor accepts
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;;; responsibility to anyone for the consequences of using it or for
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;;; whether it serves any particular purpose or works at all.
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;;; Author: Stephen L. Nicoud
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;;; -----------------------------------------------------------------
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;;; Read-Time Conditionals used in this file.
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;;; -----------------------------------------------------------------
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;;; -----------------------------------------------------------------
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;;; DEFPACKAGE - This files attempts to define a portable
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;;; implementation for DEFPACKAGE, as defined in "Common LISP, The
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;;; Language", by Guy L. Steele, Jr., Second Edition, 1990, Digital
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;;; Send comments, suggestions, and/or questions to:
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;;; Stephen L Nicoud <snicoud@boeing.com>
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;;; An early version of this file was tested in Symbolics Common
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;;; Lisp (Genera 7.2 & 8.0 on a Symbolics 3650 Lisp Machine),
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;;; Franz's Allegro Common Lisp (Release 3.1.13 on a Sun 4, SunOS
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;;; 4.1), and Sun Common Lisp (Lucid Common Lisp 3.0.2 on a Sun 3,
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;;; 91/5/23 (SLN) - Since the initial testing, modifications have
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;;; been made to reflect new understandings of what DEFPACKAGE
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;;; should do. These new understandings are the result of
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;;; discussions appearing on the X3J13 and Common Lisp mailing
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;;; lists. Cursory testing was done on the modified version only
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;;; in Allegro Common Lisp (Release 3.1.13 on a Sun 4, SunOS 4.1).
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;;; -----------------------------------------------------------------
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(lisp:in-package :DEFPACKAGE)
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(export '(defpackage))
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(proclaim '(declaration values arglist))
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;(eval-when (compile load eval)
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; (unless (member :loop *features*)
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; (require :loop #+excl (merge-pathnames "loop" excl::*library-code-fasl-pathname*)))
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; (unless (find-package :common-lisp)
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; (rename-package :lisp :common-lisp (union '("CL" "LISP") (package-nicknames (find-package :lisp)) :test #'string=)))
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; (unless (find-package :common-lisp-user)
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; (rename-package :user :common-lisp-user (union '("CL-USER" "USER") (package-nicknames (find-package :user)) :test #'string=)))
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; (shadow (intern "DEFPACKAGE" #+symbolics :scl #+ti :ticl) 'defpackage)
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; (proclaim '(declaration values arglist))
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; (export 'defpackage 'defpackage)
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(defmacro DEFPACKAGE (name &rest options)
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(declare (type (or symbol string) name)
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(arglist defined-package-name &rest options)
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"DEFPACKAGE - DEFINED-PACKAGE-NAME {OPTION}* [Macro]
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This creates a new package, or modifies an existing one, whose name is
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DEFINED-PACKAGE-NAME. The DEFINED-PACKAGE-NAME may be a string or a
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symbol; if it is a symbol, only its print name matters, and not what
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package, if any, the symbol happens to be in. The newly created or
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modified package is returned as the value of the DEFPACKAGE form.
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Each standard OPTION is a list of keyword (the name of the option)
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and associated arguments. No part of a DEFPACKAGE form is evaluated.
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Except for the :SIZE and :DOCUMENTATION options, more than one option
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of the same kind may occur within the same DEFPACKAGE form.
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(:documentation string)
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(:nicknames {package-name}*)
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(:shadow {symbol-name}*)
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(:shadowing-import-from package-name {symbol-name}*)
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(:use {package-name}*)
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(:import-from package-name {symbol-name}*)
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(:intern {symbol-name}*)
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(:export {symbol-name}*)
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(:export-from {package-name}*)
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[Note: :EXPORT-FROM is an extension to DEFPACKAGE.
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If a symbol is interned in the package being created and
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if a symbol with the same print name appears as an external
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symbol of one of the packages in the :EXPORT-FROM option,
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then the symbol is exported from the package being created.
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:DOCUMENTATION is an extension to DEFPACKAGE.
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:SIZE is used only in Genera and Allegro.]"
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(loop for (option) in options
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unless (member option '(:documentation :size :nicknames :shadow :shadowing-import-from :use :import-from :intern :export :export-from))
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do (cerror "Proceed, ignoring this option." "~s is not a valid DEFPACKAGE option." option))
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(labels ((option-test (arg1 arg2) (when (consp arg2) (equal (car arg2) arg1)))
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(option-values-list (option options)
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(loop for result = (member option options ':test #'option-test)
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then (member option (rest result) ':test #'option-test)
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until (null result) when result collect (rest (first result))))
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(option-values (option options)
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(loop for result = (member option options ':test #'option-test)
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then (member option (rest result) ':test #'option-test)
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until (null result) when result append (rest (first result)))))
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(loop for option in '(:size :documentation)
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when (<= 2 (count option options ':key #'car))
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do (warn "DEFPACKAGE option ~s specified more than once. The first value \"~a\" will be used." option (first (option-values option options))))
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(setq name (string name))
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(let ((nicknames (mapcar #'string (option-values ':nicknames options)))
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(documentation (first (option-values ':documentation options)))
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(size (first (option-values ':size options)))
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(shadowed-symbol-names (mapcar #'string (option-values ':shadow options)))
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(interned-symbol-names (mapcar #'string (option-values ':intern options)))
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(exported-symbol-names (mapcar #'string (option-values ':export options)))
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(shadowing-imported-from-symbol-names-list (loop for list in (option-values-list ':shadowing-import-from options)
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collect (cons (string (first list)) (mapcar #'string (rest list)))))
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(imported-from-symbol-names-list (loop for list in (option-values-list ':import-from options)
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collect (cons (string (first list)) (mapcar #'string (rest list)))))
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(exported-from-package-names (mapcar #'string (option-values ':export-from options))))
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(flet ((find-duplicates (&rest lists)
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(loop for list in lists
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for more on (cdr lists)
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(loop for elt in list
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as entry = (find elt results :key #'car :test #'string=)
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unless (member i entry)
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(if (member elt l2 :test #'string=)
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(nconc entry (list j))
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(setq entry (car (push (list elt i j) results))))))))
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(loop for duplicate in (find-duplicates shadowed-symbol-names interned-symbol-names
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(loop for list in shadowing-imported-from-symbol-names-list append (rest list))
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(loop for list in imported-from-symbol-names-list append (rest list)))
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(error "The symbol ~s cannot coexist in these lists:~{ ~s~}" (first duplicate)
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(loop for num in (rest duplicate)
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collect (case num (1 ':SHADOW)(2 ':INTERN)(3 ':SHADOWING-IMPORT-FROM)(4 ':IMPORT-FROM)))))
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(loop for duplicate in (find-duplicates exported-symbol-names interned-symbol-names)
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(error "The symbol ~s cannot coexist in these lists:~{ ~s~}" (first duplicate)
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(loop for num in (rest duplicate) collect (case num (1 ':EXPORT)(2 ':INTERN))))))
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`(eval-when (load eval compile)
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(if (find-package ,name)
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(progn (rename-package ,name ,name)
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,@(when nicknames `((rename-package ,name ,name ',nicknames)))
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#+(or symbolics excl)
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#+symbolics `((when (> ,size (pkg-max-number-of-symbols (find-package ,name)))
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(pkg-rehash (find-package ,name) ,size)))
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#+excl `((let ((tab (excl::package-internal-symbols (find-package ,name))))
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(when (hash-table-p tab)
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(setf (excl::ha_rehash-size tab) ,size)))))
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,@(when (not (null (member ':use options ':key #'car)))
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`((unuse-package (package-use-list (find-package ,name)) ,name))))
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(make-package ,name ':use 'nil ':nicknames ',nicknames ,@(when size #+lispm `(:size ,size) #+excl `(:internal-symbols ,size))))
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,@(when documentation `((setf (get ',(intern name :keyword) #+excl 'excl::%package-documentation #-excl ':package-documentation) ,documentation)))
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(let ((*package* (find-package ,name)))
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,@(when SHADOWed-symbol-names `((SHADOW (mapcar #'intern ',SHADOWed-symbol-names))))
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,@(when SHADOWING-IMPORTed-from-symbol-names-list
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(mapcar #'(lambda (list)
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`(SHADOWING-IMPORT (mapcar #'(lambda (symbol) (intern symbol ,(first list))) ',(rest list))))
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SHADOWING-IMPORTed-from-symbol-names-list))
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(USE-PACKAGE ',(or (mapcar #'string (option-values ':USE options)) "CL"))
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,@(when IMPORTed-from-symbol-names-list
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(mapcar #'(lambda (list) `(IMPORT (mapcar #'(lambda (symbol) (intern symbol ,(first list))) ',(rest list))))
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IMPORTed-from-symbol-names-list))
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,@(when INTERNed-symbol-names `((mapcar #'INTERN ',INTERNed-symbol-names)))
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,@(when EXPORTed-symbol-names `((EXPORT (mapcar #'intern ',EXPORTed-symbol-names))))
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,@(when EXPORTed-from-package-names
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`((dolist (package ',EXPORTed-from-package-names)
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(do-external-symbols (symbol (find-package package))
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(when (nth 1 (multiple-value-list (find-symbol (string symbol))))
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(EXPORT (list (intern (string symbol)))))))))
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(find-package ,name)))))
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;(excl::defadvice cl:documentation (look-for-package-type :around)
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; (let ((symbol (first excl::arglist))
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; (type (second excl::arglist)))
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; (if (or (eq ':package (intern (string type) :keyword))
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; (eq ':defpackage (intern (string type) :keyword)))
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; (or (get symbol 'excl::%package-documentation)
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; (get (intern (string symbol) :keyword) 'excl::%package-documentation))
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;(scl::advise cl:documentation :around look-for-package-type nil
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; (let ((symbol (first scl::arglist))
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; (type (second scl::arglist)))
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; (if (or (eq ':package (intern (string type) :keyword))
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; (eq ':defpackage (intern (string type) :keyword)))
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; (or (get symbol ':package-documentation)
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; (get (intern (string symbol) :keyword) ':package-documentation))
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(provide :defpackage)
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(pushnew :defpackage *features*)
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(unintern 'defpackage 'user)
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(use-package "DEFPACKAGE"))
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;;;; ------------------------------------------------------------
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;;;; ------------------------------------------------------------
added
removed
lsp/defpackage.lsp
