01: /*
02: * StructureClass.java
03: *
04: * Copyright (C) 2003 Peter Graves
05: * $Id: StructureClass.java,v 1.6 2003/11/15 11:03:31 beedlem 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 class StructureClass extends LispClass {
25: private StructureClass(Symbol symbol) {
26: super (symbol, new Cons(BuiltInClass.STRUCTURE_OBJECT));
27: }
28:
29: public LispObject typeOf() {
30: return Symbol.STRUCTURE_CLASS;
31: }
32:
33: public LispClass classOf() {
34: return BuiltInClass.STRUCTURE_CLASS;
35: }
36:
37: public LispObject typep(LispObject type) throws ConditionThrowable {
38: if (type == Symbol.STRUCTURE_CLASS)
39: return T;
40: if (type == BuiltInClass.STRUCTURE_CLASS)
41: return T;
42: return super .typep(type);
43: }
44:
45: public String toString() {
46: StringBuffer sb = new StringBuffer("#<STRUCTURE-CLASS ");
47: sb.append(symbol.getName());
48: sb.append('>');
49: return sb.toString();
50: }
51:
52: // ### make-structure-class
53: private static final Primitive1 MAKE_STRUCTURE_CLASS = new Primitive1(
54: "make-structure-class", PACKAGE_SYS, false) {
55: public LispObject execute(LispObject arg)
56: throws ConditionThrowable {
57: Symbol symbol = checkSymbol(arg);
58: StructureClass c = new StructureClass(symbol);
59: c.setCPL(c, BuiltInClass.STRUCTURE_OBJECT,
60: BuiltInClass.CLASS_T);
61: addClass(symbol, c);
62: return c;
63: }
64: };
65: }
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