1 /*
 2  * Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 package org.openjdk.asmtools.jasm;
24 
25 /**
26  *
27  */
28 class Argument {
29 
30     static final int NotSet = -1;
31     int arg;
32 
33     Argument() {
34         arg = NotSet;
35     }
36 
37     Argument(int arg) {
38         this.arg = arg;
39     }
40 
41     public int hashCode() {
42         return arg;
43     }
44 
45     /**
46      * Compares this object to the specified object.
47      *
48      * @param obj the object to compare with
49      * @return true if the objects are the same; false otherwise.
50      */
51     public boolean equals(Object obj) {
52         throw new Parser.CompilerError("ConstCell.equals");
53     }
54 
55     boolean isSet() {
56         return arg != NotSet;
57     }
58 }