1 ////////////////////////////////////////////////////////////////////////////////
2 // MillScript: an Open Spice interpreter and batch website creation tool
3 // Copyright (C) 2001-2004 Open World Ltd
4 //
5 // This file is part of MillScript.
6 //
7 // MillScript is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU General Public License as published by the Free
9 // Software Foundation; either version 2 of the License, or (at your option)
10 // any later version.
11 //
12 // MillScript is distributed in the hope that it will be useful, but WITHOUT
13 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 // more details.
16 //
17 // You should have received a copy of the GNU General Public License along with
18 // MillScript; if not, write to the Free Software Foundation, Inc., 59 Temple
19 // Place, Suite 330, Boston, MA 02111-1307 USA
20 ////////////////////////////////////////////////////////////////////////////////
21 package org.millscript.millscript.action;
22
23 import org.millscript.millscript.vm.Machine;
24
25 /**
26 * This class represents a constant action, where it always returns exactly the
27 * same value.
28 *
29 * @see org.millscript.millscript.expr.ConstantExpr
30 * @see org.millscript.millscript.expr.VarExpr
31 */
32 public final class ConstAction extends Action {
33
34 /**
35 * The constant value this action will return.
36 */
37 private Object value;
38
39 /**
40 * Constructs a new constant action to return the specified value.
41 *
42 * @param x the value this constant action should return
43 */
44 public ConstAction( final Object x ) {
45 value = x;
46 }
47
48 /**
49 * @see org.millscript.millscript.action.Action#action(org.millscript.millscript.vm.Machine)
50 */
51 @Override
52 public void action( final Machine mc ) {
53 mc.pushObject( value );
54 }
55
56 }