RuntimeInvisibleAnnotationsAttribute.java

/*******************************************************************************
 * Copyright (c) 2004, 2009 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.util.ClassFormatException;
import org.eclipse.jdt.core.util.IAnnotation;
import org.eclipse.jdt.core.util.IConstantPool;
import org.eclipse.jdt.core.util.IRuntimeInvisibleAnnotationsAttribute;

/**
 * Default implementation of IRuntimeInvisibleAnnotations
 */
public class RuntimeInvisibleAnnotationsAttribute
		extends ClassFileAttribute
		implements IRuntimeInvisibleAnnotationsAttribute {

	private static final IAnnotation[] NO_ENTRIES= new IAnnotation[0];

	private int annotationsNumber;

	private IAnnotation[] annotations;

	/**
	 * Constructor for RuntimeInvisibleAnnotations.
	 * 
	 * @param classFileBytes
	 * @param constantPool
	 * @param offset
	 * @throws ClassFormatException
	 */
	public RuntimeInvisibleAnnotationsAttribute(
			byte[] classFileBytes,
			IConstantPool constantPool,
			int offset)
			throws ClassFormatException {
		super(classFileBytes, constantPool, offset);
		final int length= u2At(classFileBytes, 6, offset);
		this.annotationsNumber= length;
		if (length != 0) {
			int readOffset= 8;
			this.annotations= new IAnnotation[length];
			for (int i= 0; i < length; i++) {
				Annotation annotation= new Annotation(classFileBytes, constantPool, offset + readOffset);
				this.annotations[i]= annotation;
				readOffset+= annotation.sizeInBytes();
			}
		} else {
			this.annotations= NO_ENTRIES;
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jdt.core.util.IRuntimeInvisibleAnnotations#getAnnotations()
	 */
	public IAnnotation[] getAnnotations() {
		return this.annotations;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jdt.core.util.IRuntimeInvisibleAnnotations#getAnnotationsNumber()
	 */
	public int getAnnotationsNumber() {
		return this.annotationsNumber;
	}
}