model/org/eclipse/jdt/internal/core/util/InnerClassesAttribute.java

/**********************************************************************
Copyright (c) 2002 IBM Corp. and others.
All rights reserved.   This program and the accompanying materials
are made available under the terms of the Common Public License v0.5
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v05.html
 
Contributors:
     IBM Corporation - initial API and implementation
**********************************************************************/
package org.eclipse.jdt.internal.core.util;

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.IInnerClassesAttribute;
import org.eclipse.jdt.core.util.IInnerClassesAttributeEntry;

/**
 * Default implementation of IInnerClassesAttribute.
 */
public class InnerClassesAttribute extends ClassFileAttribute implements IInnerClassesAttribute {		
	private static final IInnerClassesAttributeEntry[] NO_ENTRIES = new IInnerClassesAttributeEntry[0];

	private int numberOfClasses;
	private IInnerClassesAttributeEntry[] entries;
	/**
	 * Constructor for InnerClassesAttribute.
	 * @param classFileBytes
	 * @param constantPool
	 * @param offset
	 * @throws ClassFormatException
	 */
	public InnerClassesAttribute(
		byte[] classFileBytes,
		IConstantPool constantPool,
		int offset)
		throws ClassFormatException {
		super(classFileBytes, constantPool, offset);
		this.numberOfClasses = u2At(classFileBytes, 6, offset);
		int readOffset = 8;
		int length = this.numberOfClasses;
		this.entries = NO_ENTRIES;
		if (length != 0) {
			this.entries = new IInnerClassesAttributeEntry[length];
		}
		for (int i = 0; i < length; i++) {
			this.entries[i] = new InnerClassesAttributeEntry(classFileBytes, constantPool, offset + readOffset);
			readOffset += 8;
		}		
	}

	/**
	 * @see IInnerClassesAttribute#getInnerClassAttributesEntries()
	 */
	public IInnerClassesAttributeEntry[] getInnerClassAttributesEntries() {
		return this.entries;
	}

	/**
	 * @see IInnerClassesAttribute#getNumberOfClasses()
	 */
	public int getNumberOfClasses() {
		return this.numberOfClasses;
	}

}