| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core.util; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.core.util.ClassFormatException; |
| import org.eclipse.jdt.core.util.IConstantPool; |
| import org.eclipse.jdt.core.util.IConstantPoolConstant; |
| import org.eclipse.jdt.core.util.IConstantPoolEntry; |
| import org.eclipse.jdt.core.util.IExceptionAttribute; |
| |
| /** |
| * Default implementation of IExceptionAttribute. |
| */ |
| public class ExceptionAttribute extends ClassFileAttribute implements IExceptionAttribute { |
| private static final int[] NO_EXCEPTION_INDEXES = new int[0]; |
| private static final char[][] NO_EXCEPTION_NAMES = CharOperation.NO_CHAR_CHAR; |
| |
| private int exceptionsNumber; |
| private char[][] exceptionNames; |
| private int[] exceptionIndexes; |
| |
| ExceptionAttribute(byte[] classFileBytes, IConstantPool constantPool, int offset) throws ClassFormatException { |
| super(classFileBytes, constantPool, offset); |
| this.exceptionsNumber = u2At(classFileBytes, 6, offset); |
| int exceptionLength = this.exceptionsNumber; |
| this.exceptionNames = NO_EXCEPTION_NAMES; |
| this.exceptionIndexes = NO_EXCEPTION_INDEXES; |
| if (exceptionLength != 0) { |
| this.exceptionNames = new char[exceptionLength][]; |
| this.exceptionIndexes = new int[exceptionLength]; |
| } |
| int readOffset = 8; |
| IConstantPoolEntry constantPoolEntry; |
| for (int i = 0; i < exceptionLength; i++) { |
| exceptionIndexes[i] = u2At(classFileBytes, readOffset, offset); |
| constantPoolEntry = constantPool.decodeEntry(exceptionIndexes[i]); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Class) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| exceptionNames[i] = constantPoolEntry.getClassInfoName(); |
| readOffset += 2; |
| } |
| } |
| |
| /** |
| * @see IExceptionAttribute#getExceptionIndexes() |
| */ |
| public int[] getExceptionIndexes() { |
| return this.exceptionIndexes; |
| } |
| |
| /** |
| * @see IExceptionAttribute#getExceptionNames() |
| */ |
| public char[][] getExceptionNames() { |
| return this.exceptionNames; |
| } |
| |
| /** |
| * @see IExceptionAttribute#getExceptionsNumber() |
| */ |
| public int getExceptionsNumber() { |
| return this.exceptionsNumber; |
| } |
| } |