1 /*
2  * Copyright (c) 1994, 2003, 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.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package sun.tools.tree;
27 
28 import sun.tools.java.*;
29 import sun.tools.asm.Assembler;
30 
31 /**
32  * WARNING: The contents of this source file are not part of any
33  * supported API.  Code that depends on them does so at its own risk:
34  * they are subject to change or removal without notice.
35  */
36 public
37 class BitOrExpression extends BinaryBitExpression {
38     /**
39      * constructor
40      */
BitOrExpression(long where, Expression left, Expression right)41     public BitOrExpression(long where, Expression left, Expression right) {
42         super(BITOR, where, left, right);
43     }
44 
45     /**
46      * Evaluate
47      */
eval(boolean a, boolean b)48     Expression eval(boolean a, boolean b) {
49         return new BooleanExpression(where, a | b);
50     }
eval(int a, int b)51     Expression eval(int a, int b) {
52         return new IntExpression(where, a | b);
53     }
eval(long a, long b)54     Expression eval(long a, long b) {
55         return new LongExpression(where, a | b);
56     }
57 
58     /**
59      * Simplify
60      */
simplify()61     Expression simplify() {
62         if (left.equals(false) || left.equals(0))
63             return right;
64         if (right.equals(false) || right.equals(0))
65             return left;
66         if (left.equals(true))
67             return new CommaExpression(where, right, left).simplify();
68         if (right.equals(true))
69             return new CommaExpression(where, left, right).simplify();
70         return this;
71     }
72 
73     /**
74      * Code
75      */
codeOperation(Environment env, Context ctx, Assembler asm)76     void codeOperation(Environment env, Context ctx, Assembler asm) {
77         asm.add(where, opc_ior + type.getTypeCodeOffset());
78     }
79 }
80