    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 *  Unless required by applicable law or agreed to in writing, software
    012 *  distributed under the License is distributed on an "AS IS" BASIS,
    013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 *  See the License for the specific language governing permissions and
    015 *  limitations under the License.
    016 *
    017 */
    018package org.apache.bcel.verifier.exc;
    019
    020import java.util.Arrays;
    021
    022/**
    023 * Instances of this class should never be thrown. When such an instance is thrown,
    024 * this is due to an INTERNAL ERROR of BCEL's class file verifier &quot;JustIce&quot;.
    025 *
    026 */
    027public final class AssertionViolatedException extends RuntimeException{
    028    private static final long serialVersionUID = -129822266349567409L;
    029    /** The error message. */
    030    private String detailMessage;
    031    /** Constructs a new AssertionViolatedException with null as its error message string. */
    032    public AssertionViolatedException() {
    033        super();
    034    }
    035    /**
    036     * Constructs a new AssertionViolatedException with the specified error message preceded
    037     * by &quot;INTERNAL ERROR: &quot;.
    038     */
    039    public AssertionViolatedException(String message) {
    040        super(message = "INTERNAL ERROR: "+message); // Thanks to Java, the constructor call here must be first.
    041        detailMessage=message;
    042    }
    043    /**
    044     * Constructs a new AssertionViolationException with the specified error message and initial cause
    045     * @since 6.0
    046     */
    047    public AssertionViolatedException(String message, final Throwable initCause) {
    048        super(message = "INTERNAL ERROR: "+message, initCause);
    049        detailMessage=message;
    050    }
    051    /** Extends the error message with a string before ("pre") and after ("post") the
    052        'old' error message. All of these three strings are allowed to be null, and null
    053        is always replaced by the empty string (""). In particular, after invoking this
    054        method, the error message of this object can no longer be null.
    055    */
    056    public void extendMessage(String pre, String post) {
    057        if (pre  == null) {
    058            pre="";
    059        }
    060        if (detailMessage == null) {
    061            detailMessage="";
    062        }
    063        if (post == null) {
    064            post="";
    065        }
    066        detailMessage = pre+detailMessage+post;
    067    }
    068    /**
    069     * Returns the error message string of this AssertionViolatedException object.
    070     * @return the error message string of this AssertionViolatedException.
    071     */
    072    @Override
    073    public String getMessage() {
    074        return detailMessage;
    075    }
    076
    077    /**
    078     * DO NOT USE. It's for experimental testing during development only.
    079     */
    080    public static void main(final String[] args) {
    081        final AssertionViolatedException ave = new AssertionViolatedException(Arrays.toString(args));
    082        ave.extendMessage("\nFOUND:\n\t","\nExiting!!\n");
    083        throw ave;
    084    }
    085
    086}