X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=calist.el;h=fbef6808a08863ff8d80b690c6e47d9d1592556e;hb=6735de899c312cadf00a812c038882be505d411f;hp=504476ae05a94a4b6c6ec101de7db1e8cf21a941;hpb=533a9a089717345fdfe5ff49b9798b54124cdd56;p=elisp%2Fapel.git

diff --git a/calist.el b/calist.el
index 504476a..fbef680 100644
--- a/calist.el
+++ b/calist.el
@@ -1,8 +1,10 @@
 ;;; calist.el --- Condition functions
 
-;; Copyright (C) 1998 MORIOKA Tomohiko.
+;; Copyright (C) 1998 Free Software Foundation, Inc.
+;; Copyright (C) 1999 Electrotechnical Laboratory, JAPAN.
+;; Licensed to the Free Software Foundation.
 
-;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Author: MORIOKA Tomohiko <tomo@m17n.org>
 ;; Keywords: condition, alist, tree
 
 ;; This file is part of APEL (A Portable Emacs Library).
@@ -26,13 +28,49 @@
 
 (eval-when-compile (require 'cl))
 
-(defvar calist-field-match-method-obarray [nil])
+(require 'alist)
+
+(defvar calist-package-alist nil)
+(defvar calist-field-match-method-obarray nil)
+
+(defun find-calist-package (name)
+  "Return a calist-package by NAME."
+  (cdr (assq name calist-package-alist)))
 
 (defun define-calist-field-match-method (field-type function)
   "Set field-match-method for FIELD-TYPE to FUNCTION."
   (fset (intern (symbol-name field-type) calist-field-match-method-obarray)
 	function))
 
+(defun use-calist-package (name)
+  "Make the symbols of package NAME accessible in the current package."
+  (mapatoms (lambda (sym)
+	      (if (intern-soft (symbol-name sym)
+			       calist-field-match-method-obarray)
+		  (signal 'conflict-of-calist-symbol
+			  (list (format "Conflict of symbol %s")))
+		(if (fboundp sym)
+		    (define-calist-field-match-method
+		      sym (symbol-function sym))
+		  )))
+	    (find-calist-package name)))
+
+(defun make-calist-package (name &optional use)
+  "Create a new calist-package."
+  (let ((calist-field-match-method-obarray (make-vector 7 0)))
+    (set-alist 'calist-package-alist name
+	       calist-field-match-method-obarray)
+    (use-calist-package (or use 'standard))
+    calist-field-match-method-obarray))
+
+(defun in-calist-package (name)
+  "Set the current calist-package to a new or existing calist-package."
+  (setq calist-field-match-method-obarray
+	(or (find-calist-package name)
+	    (make-calist-package name))))
+
+(in-calist-package 'standard)
+
 (defun calist-default-field-match-method (calist field-type field-value)
   (let ((s-field (assoc field-type calist)))
     (cond ((null s-field)
@@ -43,13 +81,15 @@
 	  ((equal (cdr s-field) field-value)
 	   calist))))
 
+(define-calist-field-match-method t (function calist-default-field-match-method))
+
 (defsubst calist-field-match-method (field-type)
-  (condition-case nil
-      (symbol-function
-       (intern-soft
-	(symbol-name field-type) calist-field-match-method-obarray))
-    (error (symbol-function 'calist-default-field-match-method))
-    ))
+  (symbol-function
+   (or (intern-soft (if (symbolp field-type)
+			(symbol-name field-type)
+		      field-type)
+		    calist-field-match-method-obarray)
+       (intern-soft "t" calist-field-match-method-obarray))))
 
 (defsubst calist-field-match (calist field-type field-value)
   (funcall (calist-field-match-method field-type)
@@ -285,6 +325,7 @@ even if other rules are matched for ALIST."
 ;;; @ end
 ;;;
 
-(provide 'calist)
+(require 'product)
+(product-provide (provide 'calist) (require 'apel-ver))
 
 ;;; calist.el ends here