| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2011 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.classfile.editor; |
| |
| import proguard.classfile.attribute.ExceptionsAttribute; |
| |
| /** |
| * This class can add exceptions to a given exceptions attribute. |
| * Exceptions to be added must have been added to the constant pool and filled |
| * out beforehand. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ExceptionsAttributeEditor |
| { |
| private ExceptionsAttribute targetExceptionsAttribute; |
| |
| |
| /** |
| * Creates a new ExceptionsAttributeEditor that will edit exceptions in the |
| * given exceptions attribute. |
| */ |
| public ExceptionsAttributeEditor(ExceptionsAttribute targetExceptionsAttribute) |
| { |
| this.targetExceptionsAttribute = targetExceptionsAttribute; |
| } |
| |
| |
| /** |
| * Adds a given exception to the exceptions attribute. |
| */ |
| public void addException(int exceptionIndex) |
| { |
| int exceptionIndexTableLength = targetExceptionsAttribute.u2exceptionIndexTableLength; |
| int[] exceptionIndexTable = targetExceptionsAttribute.u2exceptionIndexTable; |
| |
| // Make sure there is enough space for the new exception. |
| if (exceptionIndexTable.length <= exceptionIndexTableLength) |
| { |
| targetExceptionsAttribute.u2exceptionIndexTable = new int[exceptionIndexTableLength+1]; |
| System.arraycopy(exceptionIndexTable, 0, |
| targetExceptionsAttribute.u2exceptionIndexTable, 0, |
| exceptionIndexTableLength); |
| exceptionIndexTable = targetExceptionsAttribute.u2exceptionIndexTable; |
| } |
| |
| // Add the exception. |
| exceptionIndexTable[targetExceptionsAttribute.u2exceptionIndexTableLength++] = exceptionIndex; |
| } |
| } |