Java tutorial
package org.aspectj.apache.bcel.classfile; /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Apache" and "Apache Software Foundation" and * "Apache BCEL" must not be used to endorse or promote products * derived from this software without prior written permission. For * written permission, please contact apache@apache.org. * * 5. Products derived from this software may not be called "Apache", * "Apache BCEL", nor may "Apache" appear in their name, without * prior written permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import org.aspectj.apache.bcel.Constants; /** * This class is derived from <em>Attribute</em> and denotes that this class is an Inner class of another. to the source file of * this class. It is instantiated from the <em>Attribute.readAttribute()</em> method. * * @version $Id: InnerClasses.java,v 1.5 2009/09/15 19:40:12 aclement Exp $ * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> * @see Attribute */ public final class InnerClasses extends Attribute { private InnerClass[] inner_classes; private int number_of_classes; /** * Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical * copy. */ public InnerClasses(InnerClasses c) { this(c.getNameIndex(), c.getLength(), c.getInnerClasses(), c.getConstantPool()); } /** * @param name_index Index in constant pool to CONSTANT_Utf8 * @param length Content length in bytes * @param inner_classes array of inner classes attributes * @param constant_pool Array of constants * @param sourcefile_index Index in constant pool to CONSTANT_Utf8 */ public InnerClasses(int name_index, int length, InnerClass[] inner_classes, ConstantPool constant_pool) { super(Constants.ATTR_INNER_CLASSES, name_index, length, constant_pool); setInnerClasses(inner_classes); } /** * Construct object from file stream. * * @param name_index Index in constant pool to CONSTANT_Utf8 * @param length Content length in bytes * @param file Input stream * @param constant_pool Array of constants * @throws IOException */ InnerClasses(int name_index, int length, DataInputStream file, ConstantPool constant_pool) throws IOException { this(name_index, length, (InnerClass[]) null, constant_pool); number_of_classes = file.readUnsignedShort(); inner_classes = new InnerClass[number_of_classes]; for (int i = 0; i < number_of_classes; i++) inner_classes[i] = new InnerClass(file); } /** * Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the * hierarchy of methods, fields, attributes, etc. spawns a tree of objects. * * @param v Visitor object */ @Override public void accept(ClassVisitor v) { v.visitInnerClasses(this); } /** * Dump source file attribute to file stream in binary format. * * @param file Output file stream * @throws IOException */ @Override public final void dump(DataOutputStream file) throws IOException { super.dump(file); file.writeShort(number_of_classes); for (int i = 0; i < number_of_classes; i++) inner_classes[i].dump(file); } /** * @return array of inner class "records" */ public final InnerClass[] getInnerClasses() { return inner_classes; } /** * @param inner_classes. */ public final void setInnerClasses(InnerClass[] inner_classes) { this.inner_classes = inner_classes; number_of_classes = (inner_classes == null) ? 0 : inner_classes.length; } /** * @return String representation. */ @Override public final String toString() { StringBuffer buf = new StringBuffer(); for (int i = 0; i < number_of_classes; i++) buf.append(inner_classes[i].toString(cpool) + "\n"); return buf.toString(); } // /** // * @return deep copy of this attribute // */ // public Attribute copy(ConstantPool constant_pool) { // InnerClasses c = (InnerClasses)clone(); // // c.inner_classes = new InnerClass[number_of_classes]; // for(int i=0; i < number_of_classes; i++) // c.inner_classes[i] = inner_classes[i].copy(); // // c.cpool = constant_pool; // return c; // } }