01: /*
02: * Copyright 1994-2003 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any 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 class BitOrExpression extends BinaryBitExpression {
37: /**
38: * constructor
39: */
40: public BitOrExpression(long where, Expression left, Expression right) {
41: super (BITOR, where, left, right);
42: }
43:
44: /**
45: * Evaluate
46: */
47: Expression eval(boolean a, boolean b) {
48: return new BooleanExpression(where, a | b);
49: }
50:
51: Expression eval(int a, int b) {
52: return new IntExpression(where, a | b);
53: }
54:
55: Expression eval(long a, long b) {
56: return new LongExpression(where, a | b);
57: }
58:
59: /**
60: * Simplify
61: */
62: Expression simplify() {
63: if (left.equals(false) || left.equals(0))
64: return right;
65: if (right.equals(false) || right.equals(0))
66: return left;
67: if (left.equals(true))
68: return new CommaExpression(where, right, left).simplify();
69: if (right.equals(true))
70: return new CommaExpression(where, left, right).simplify();
71: return this ;
72: }
73:
74: /**
75: * Code
76: */
77: void codeOperation(Environment env, Context ctx, Assembler asm) {
78: asm.add(where, opc_ior + type.getTypeCodeOffset());
79: }
80: }
|