01: /*
02: * JVar.java
03: *
04: * Copyright (C) 2003 Peter Graves
05: * $Id: JVar.java,v 1.3 2003/10/06 13:51:18 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.j;
23:
24: import java.util.ArrayList;
25: import org.armedbear.lisp.ConditionThrowable;
26: import org.armedbear.lisp.LispError;
27: import org.armedbear.lisp.LispObject;
28: import org.armedbear.lisp.Symbol;
29:
30: public final class JVar extends LispObject {
31: private static final Symbol J_VARIABLE_VALUE = LispAPI.PACKAGE_J_INTERNALS
32: .addInternalSymbol("J-VARIABLE-VALUE");
33:
34: private final Property property;
35:
36: private JVar(String name, Property property) {
37: this .property = property;
38: Symbol symbol = LispAPI.PACKAGE_J.findAccessibleSymbol(name);
39: if (symbol == null)
40: symbol = LispAPI.PACKAGE_J.addExternalSymbol(name);
41: try {
42: put(symbol, J_VARIABLE_VALUE, this );
43: } catch (Throwable t) {
44: Log.error(t);
45: }
46: }
47:
48: public Property getProperty() {
49: return property;
50: }
51:
52: public static JVar getJVar(Symbol symbol) throws ConditionThrowable {
53: LispObject obj = get(symbol, J_VARIABLE_VALUE, null);
54: if (obj instanceof JVar)
55: return (JVar) obj;
56: throw new ConditionThrowable(new LispError(String
57: .valueOf(symbol)
58: + " is not defined as an editor variable"));
59: }
60:
61: public static synchronized void addVariableForProperty(
62: Property property) {
63: new JVar(property.getLispName(), property);
64: }
65:
66: public String toString() {
67: FastStringBuffer sb = new FastStringBuffer("#<J-VARIABLE @ #x");
68: sb.append(Integer.toHexString(hashCode()));
69: sb.append(">");
70: return sb.toString();
71: }
72: }
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