Copyright (c) 2000, 2009 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * 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.
/**
 * Default implementation of IExceptionAttribute.
 */
public class ExceptionAttribute extends ClassFileAttribute implements IExceptionAttribute {
	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 = CharOperation.NO_CHAR_CHAR;
		this.exceptionIndexes = org.eclipse.jdt.internal.compiler.util.Util.EMPTY_INT_ARRAY;
		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++) {
			this.exceptionIndexes[i] = u2At(classFileBytes, readOffset, offset);
			constantPoolEntry = constantPool.decodeEntry(this.exceptionIndexes[i]);
			if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Class) {
				throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY);
			}
			this.exceptionNames[i] = constantPoolEntry.getClassInfoName();
			readOffset += 2;
		}
	}

	
See Also:
getExceptionIndexes.getExceptionIndexes()/**
	 * @see IExceptionAttribute#getExceptionIndexes()
	 */
	@Override
	public int[] getExceptionIndexes() {
		return this.exceptionIndexes;
	}

	
See Also:
getExceptionNames.getExceptionNames()/**
	 * @see IExceptionAttribute#getExceptionNames()
	 */
	@Override
	public char[][] getExceptionNames() {
		return this.exceptionNames;
	}

	
See Also:
getExceptionsNumber.getExceptionsNumber()/**
	 * @see IExceptionAttribute#getExceptionsNumber()
	 */
	@Override
	public int getExceptionsNumber() {
		return this.exceptionsNumber;
	}
}