1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * https://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.bcel.verifier.exc;
20
21 /**
22 * Instances of this class are thrown by BCEL's class file verifier "JustIce" whenever verification proves that some
23 * constraint of a class file (as stated in the Java Virtual Machine Specification, Edition 2) is violated. This is
24 * roughly equivalent to the VerifyError the JVM-internal verifiers throw.
25 */
26 public abstract class VerifierConstraintViolatedException extends RuntimeException {
27 // /** The name of the offending class that did not pass the verifier. */
28 // String name_of_offending_class;
29
30 private static final long serialVersionUID = 2946136970490179465L;
31 /** The specified error message. */
32 private String detailMessage;
33
34 /**
35 * Constructs a new VerifierConstraintViolatedException with null as its error message string.
36 */
37 VerifierConstraintViolatedException() {
38 }
39
40 /**
41 * Constructs a new VerifierConstraintViolatedException with the specified error message.
42 */
43 VerifierConstraintViolatedException(final String message) {
44 super(message); // Not that important
45 detailMessage = message;
46 }
47
48 /**
49 * Constructs a new VerifierConstraintViolationException with the specified error message and cause
50 */
51 VerifierConstraintViolatedException(final String message, final Throwable initCause) {
52 super(message, initCause);
53 detailMessage = message;
54 }
55
56 /**
57 * Extends the error message with a string before ("pre") and after ("post") the 'old' error message. All of these three
58 * strings are allowed to be null, and null is always replaced by the empty string (""). In particular, after invoking
59 * this method, the error message of this object can no longer be null.
60 */
61 public void extendMessage(String pre, String post) {
62 if (pre == null) {
63 pre = "";
64 }
65 if (detailMessage == null) {
66 detailMessage = "";
67 }
68 if (post == null) {
69 post = "";
70 }
71 detailMessage = pre + detailMessage + post;
72 }
73
74 /**
75 * Returns the error message string of this VerifierConstraintViolatedException object.
76 *
77 * @return the error message string of this VerifierConstraintViolatedException.
78 */
79 @Override
80 public String getMessage() {
81 return detailMessage;
82 }
83 }