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;; Copyright (C) 1994 M. Hagiya, W. Schelter, T. Yuasa
;; This file is part of GNU Common Lisp, herein referred to as GCL
;;
;; GCL is free software; you can redistribute it and/or modify it under
;; the terms of the GNU LIBRARY GENERAL PUBLIC LICENSE as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;;
;; GCL 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 Library General Public
;; License for more details.
;;
;; You should have received a copy of the GNU Library General Public License
;; along with GCL; see the file COPYING. If not, write to the Free Software
;; Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
;;;; packlib.lsp
;;;;
;;;; package routines
(in-package :si)
(proclaim '(optimize (safety 2) (space 3)))
(defmacro coerce-to-package (p)
(if (eq p '*package*)
p
(let ((g (gensym)))
`(let ((,g ,p))
(if (packagep ,g)
,g
(find-package (string ,g)))))))
(defun find-all-symbols (string-or-symbol)
(when (symbolp string-or-symbol)
(setq string-or-symbol (symbol-name string-or-symbol)))
(mapcan #'(lambda (p)
(multiple-value-bind (s i)
(find-symbol string-or-symbol p)
(if (or (eq i :internal) (eq i :external))
(list s)
nil)))
(list-all-packages)))
(defmacro do-symbols ((var &optional (package '*package*) (result-form nil))
. body)
(let ((p (gensym)) (i (gensym)) (l (gensym)) (q (gensym))
(loop (gensym)) (x (gensym))(y (gensym)) (break (gensym)) declaration)
(multiple-value-setq (declaration body) (find-declarations body))
`(let ((,p (coerce-to-package ,package)) ,var ,l )
,@declaration
(dolist (,q (cons ,p (package-use-list ,p)) (progn (setq ,var nil) ,result-form))
(multiple-value-bind
(,y ,x) (package-size ,q)
(declare (fixnum ,x ,y))
(if (not (eq ,p ,q)) (setq ,x 0))
(dotimes (,i (+ ,x ,y))
(setq ,l (if (< ,i ,x)
(si:package-internal ,q ,i)
(si:package-external ,q (- ,i ,x))))
,loop
(when (null ,l) (go ,break))
(setq ,var (car ,l))
(if (or (eq ,q ,p)
(eq :inherited (car (last (multiple-value-list
(find-symbol (symbol-name ,var) ,p))))))
(tagbody ,@body))
(setq ,l (cdr ,l))
(go ,loop)
,break))))))
(defmacro do-external-symbols
((var &optional (package '*package*) (result-form nil)) . body)
(let ((p (gensym)) (i (gensym)) (l (gensym))
(loop (gensym)) (break (gensym)) declaration)
(multiple-value-setq (declaration body)
(find-declarations body))
`(let ((,p (coerce-to-package ,package)) ,var ,l)
,@declaration
(dotimes (,i (package-size ,p) (progn (setq ,var nil) ,result-form))
(setq ,l (si:package-external ,p ,i))
,loop
(when (null ,l) (go ,break))
(setq ,var (car ,l))
,@body
(setq ,l (cdr ,l))
(go ,loop)
,break))))
(defmacro do-all-symbols((var &optional (result-form nil)) . body)
`(dolist (.v (list-all-packages) ,result-form)
(do-symbols (,var .v)
(tagbody ,@ body))))
(defun substringp (sub str)
(do ((i (- (length str) (length sub)))
(l (length sub))
(j 0 (1+ j)))
((> j i) nil)
(when (string-equal sub str :start2 j :end2 (+ j l))
(return t))))
(defun print-symbol-apropos (symbol)
(prin1 symbol)
(when (fboundp symbol)
(if (special-operator-p symbol)
(princ " Special form")
(if (macro-function symbol)
(princ " Macro")
(princ " Function"))))
(when (boundp symbol)
(if (constantp symbol)
(princ " Constant: ")
(princ " has value: "))
(prin1 (symbol-value symbol)))
(terpri))
;(defun apropos (string &optional package)
; (setq string (string string))
; (cond (package
; (do-symbols (symbol package)
; (when (substringp string (string symbol))
; (print-symbol-apropos symbol)))
; (do ((p (package-use-list package) (cdr p)))
; ((null p))
; (do-external-symbols (symbol (car p))
; (when (substringp string (string symbol))
; (print-symbol-apropos symbol)))))
; (t
; (do-all-symbols (symbol)
; (when (substringp string (string symbol))
; (print-symbol-apropos symbol)))))
; (values))
(defun apropos-list (string &optional package &aux list)
(setq list nil)
(setq string (string string))
(cond (package
(do-symbols (symbol package)
(when (substringp string (string symbol))
(setq list (cons symbol list))))
(do ((p (package-use-list package) (cdr p)))
((null p))
(do-external-symbols (symbol (car p))
(when (substringp string (string symbol))
(setq list (cons symbol list))))))
(t
(do-all-symbols (symbol)
(when (substringp string (string symbol))
(setq list (cons symbol list))))))
(stable-sort (delete-duplicates list :test #'eq)
#'string< :key #'symbol-name))
(defun apropos (string &optional package)
(dolist (symbol (apropos-list string package))
(print-symbol-apropos symbol))
(values))
(defmacro with-package-iterator ((name plist &rest symbol-types) . body)
(let ((p (gensym)) (i (gensym)) (l (gensym)) (q (gensym)) (dum (gensym))
(x (gensym))(y (gensym)) (access (gensym)) declaration)
(multiple-value-setq (declaration body) (si::find-declarations body))
(if (null symbol-types)
(error 'program-error :format-control "Symbol type specifiers must be supplied"))
`(let ((,p (cons t (if (atom ,plist) (list ,plist) ,plist))) (,q nil) (,l nil)
(,i -1) (,x 0) (,y 0) (,dum nil) (,access nil))
(declare (fixnum ,x ,y))
(flet ((,name ()
(tagbody ,name
(when (null (setq ,l (cdr ,l)))
(when (eql (incf ,i) (+ ,x ,y))
(when (null (setq ,q (cdr ,q)))
(when (null (setq ,p (cdr ,p)))
(return-from ,name nil))
(rplaca ,p (coerce-to-package (car ,p)))
(setq ,q (list
(si::coerce-to-package (car ,p))))
(when (member :inherited (list ,@symbol-types))
(rplacd ,q (package-use-list (car ,q)))))
(multiple-value-setq (,y ,x) (si::package-size (car ,q)))
(when (or (not (member :internal (list ,@symbol-types)))
(not (eq (car ,p) (car ,q))))
(setq ,x 0))
(when (and (not (member :external (list ,@symbol-types)))
(eq (car ,p) (car ,q)))
(setq ,y 0))
(when (zerop (+ ,x ,y))
(setq ,i -1)
(go ,name))
(setq ,i 0))
(setq ,l (if (< ,i ,x)
(si::package-internal (car ,q) ,i)
(si::package-external (car ,q) (- ,i ,x)))))
(when (null ,l)
(go ,name))
(multiple-value-setq (,dum ,access)
(find-symbol
(symbol-name (car ,l)) (car ,p)))
(when (and (not (eq ,access :inherited))
(not (eq (car ,p) (car ,q))))
(go ,name)))
(values 't (car ,l) ,access (car ,p))))
,@declaration
,@body))))
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