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comparison graal/com.oracle.max.cri/src/com/sun/cri/ci/CiExceptionHandler.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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3732:3e2e8b8abdaf 3733:e233f5660da4
1 /*
2 * Copyright (c) 2009, 2011, 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 com.sun.cri.ci;
24
25 import com.sun.cri.ri.*;
26
27 /**
28 * An implementation of the {@link RiExceptionHandler} interface.
29 */
30 public class CiExceptionHandler implements RiExceptionHandler {
31
32 public static final CiExceptionHandler[] NONE = {};
33
34 public final int startBCI;
35 public final int endBCI;
36 public final int handlerBCI;
37 public final int catchTypeCPI;
38 public final RiType catchType;
39
40 /**
41 * Creates a new exception handler with the specified ranges.
42 * @param startBCI the start index of the protected range
43 * @param endBCI the end index of the protected range
44 * @param catchBCI the index of the handler
45 * @param catchTypeCPI the index of the throwable class in the constant pool
46 * @param catchType the type caught by this exception handler
47 */
48 public CiExceptionHandler(int startBCI, int endBCI, int catchBCI, int catchTypeCPI, RiType catchType) {
49 this.startBCI = startBCI;
50 this.endBCI = endBCI;
51 this.handlerBCI = catchBCI;
52 this.catchTypeCPI = catchTypeCPI;
53 this.catchType = catchType;
54 }
55
56 public int startBCI() {
57 return startBCI;
58 }
59
60 public int endBCI() {
61 return endBCI;
62 }
63
64 public int handlerBCI() {
65 return handlerBCI;
66 }
67
68 public int catchTypeCPI() {
69 return catchTypeCPI;
70 }
71
72 public boolean isCatchAll() {
73 return catchTypeCPI == 0;
74 }
75
76 public RiType catchType() {
77 return catchType;
78 }
79
80 @Override
81 public String toString() {
82 return new StringBuilder(20).
83 append('[').
84 append(startBCI).
85 append(" - ").
86 append(endBCI).
87 append(") -> ").
88 append(handlerBCI).
89 append(" type=").
90 append(catchType == null ? "*any*" : catchType.name()).
91 toString();
92 }
93 }