01: /*
02: * UndefinedFunction.java
03: *
04: * Copyright (C) 2002-2004 Peter Graves
05: * $Id: UndefinedFunction.java,v 1.10 2004/06/29 15:15:26 piso Exp $
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * 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 final class UndefinedFunction extends CellError {
25: // obj is either the undefined function itself or an initArgs list.
26: public UndefinedFunction(LispObject obj) throws ConditionThrowable {
27: super (obj instanceof Cons ? obj : list2(Keyword.NAME, obj));
28: }
29:
30: public LispObject typeOf() {
31: return Symbol.UNDEFINED_FUNCTION;
32: }
33:
34: public LispClass classOf() {
35: return BuiltInClass.UNDEFINED_FUNCTION;
36: }
37:
38: public LispObject typep(LispObject type) throws ConditionThrowable {
39: if (type == Symbol.UNDEFINED_FUNCTION)
40: return T;
41: if (type == BuiltInClass.UNDEFINED_FUNCTION)
42: return T;
43: return super .typep(type);
44: }
45:
46: public String getMessage() {
47: LispObject cellName = getCellName();
48: StringBuffer sb = new StringBuffer("The function ");
49: // FIXME
50: try {
51: sb.append(cellName.writeToString());
52: } catch (Throwable t) {
53: }
54: sb.append(" is undefined.");
55: return sb.toString();
56: }
57:
58: public String writeToString() throws ConditionThrowable {
59: if (_PRINT_ESCAPE_.symbolValue() == NIL)
60: return super .writeToString();
61: StringBuffer sb = new StringBuffer("UNDEFINED-FUNCTION ");
62: sb.append(getCellName().writeToString());
63: return unreadableString(sb.toString());
64: }
65: }
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