1 /*
2 * Copyright (c) 2001, Zoltan Farkas All Rights Reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 package net.sf.zel.instr;
20
21 import net.sf.zel.vm.*;
22
23
24 public final class LODXC extends Instruction
25 {
26 private static final long serialVersionUID = 622661058582624850L;
27
28 private LODXC(){};
29
30 @Override
31 public void execute(ExecutionContext context) throws ZExecutionException
32 {
33 final Object ckey = context.code.get(++context.ip);
34 Object ctx = context.memContext.get(ckey);
35 if (ctx != null)
36 {
37 context.stack.push(ctx);
38 } else
39 {
40 ctx = context.newMem();
41 context.memContext.put(ckey, ctx);
42 context.stack.push(ctx);
43 }
44 context.ip++;
45 }
46 /**
47 * instance
48 */
49 public static final Instruction instance = new LODXC();
50 }