KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > armedbear > lisp > PackageError


1 /*
2  * PackageError.java
3  *
4  * Copyright (C) 2003-2004 Peter Graves
5  * $Id: PackageError.java,v 1.12 2004/03/05 16:05:35 piso Exp $
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20  */
21
22 package org.armedbear.lisp;
23
24 public class PackageError extends LispError
25 {
26     private final LispObject pkg;
27
28     public PackageError(LispObject initArgs) throws ConditionThrowable
29     {
30         LispObject pkg = NIL;
31         LispObject first, second;
32         while (initArgs != NIL) {
33             first = initArgs.car();
34             initArgs = initArgs.cdr();
35             second = initArgs.car();
36             initArgs = initArgs.cdr();
37             if (first == Keyword.PACKAGE)
38                 pkg = second;
39         }
40         this.pkg = pkg;
41     }
42
43     public PackageError(String JavaDoc message)
44     {
45         super(message);
46         pkg = NIL;
47     }
48
49     public LispObject typeOf()
50     {
51         return Symbol.PACKAGE_ERROR;
52     }
53
54     public LispClass classOf()
55     {
56         return BuiltInClass.PACKAGE_ERROR;
57     }
58
59     public LispObject typep(LispObject type) throws ConditionThrowable
60     {
61         if (type == Symbol.PACKAGE_ERROR)
62             return T;
63         if (type == BuiltInClass.PACKAGE_ERROR)
64             return T;
65         return super.typep(type);
66     }
67
68     // ### package-error-package
69 private static final Primitive1 PACKAGE_ERROR_PACKAGE =
70         new Primitive1("package-error-package", "condition")
71     {
72         public LispObject execute(LispObject arg) throws ConditionThrowable
73         {
74             try {
75                 return ((PackageError)arg).pkg;
76             }
77             catch (ClassCastException JavaDoc e) {
78                 return signal(new TypeError(arg, Symbol.PACKAGE_ERROR));
79             }
80         }
81     };
82 }
83
Popular Tags