1 /*
2  * UndefinedFunction.java
3  *
4  * Copyright (C) 2002-2005 Peter Graves
5  * $Id$
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  * As a special exception, the copyright holders of this library give you
22  * permission to link this library with independent modules to produce an
23  * executable, regardless of the license terms of these independent
24  * modules, and to copy and distribute the resulting executable under
25  * terms of your choice, provided that you also meet, for each linked
26  * independent module, the terms and conditions of the license of that
27  * module.  An independent module is a module which is not derived from
28  * or based on this library.  If you modify this library, you may extend
29  * this exception to your version of the library, but you are not
30  * obligated to do so.  If you do not wish to do so, delete this
31  * exception statement from your version.
32  */
33 
34 package org.armedbear.lisp;
35 
36 import static org.armedbear.lisp.Lisp.*;
37 
38 public final class UndefinedFunction extends CellError
39 {
40   // obj is either the name of the undefined function or an initArgs list.
UndefinedFunction(LispObject obj)41   public UndefinedFunction(LispObject obj)
42   {
43     super(StandardClass.UNDEFINED_FUNCTION);
44     if (obj instanceof Cons)
45       initialize(obj);
46     else
47       setCellName(obj);
48   }
49 
50   @Override
typeOf()51   public LispObject typeOf()
52   {
53     return Symbol.UNDEFINED_FUNCTION;
54   }
55 
56   @Override
classOf()57   public LispObject classOf()
58   {
59     return StandardClass.UNDEFINED_FUNCTION;
60   }
61 
62   @Override
typep(LispObject type)63   public LispObject typep(LispObject type)
64   {
65     if (type == Symbol.UNDEFINED_FUNCTION)
66       return T;
67     if (type == StandardClass.UNDEFINED_FUNCTION)
68       return T;
69     return super.typep(type);
70   }
71 
72   @Override
getMessage()73   public String getMessage()
74   {
75     StringBuilder sb = new StringBuilder("The function ");
76     sb.append(getCellName().princToString());
77     sb.append(" is undefined.");
78     return sb.toString();
79   }
80 }
81