| 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 represents a stack map attribute used for preverification of Java classes for the <a href="http://java.sun.com/j2me/"> |
| * Java 2 Micro Edition</a> (J2ME). This attribute is used by the <a href="http://java.sun.com/products/cldc/">KVM</a> and contained |
| * within the Code attribute of a method. See CLDC specification 5.3.1.2 |
| * |
| * @version $Id: StackMap.java,v 1.6 2009/09/15 19:40:12 aclement Exp $ |
| * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> |
| * @see Code |
| * @see StackMapEntry |
| * @see StackMapType |
| */ |
| public final class StackMap extends Attribute { |
| private int map_length; |
| private StackMapEntry[] map; // Table of stack map entries |
| |
| /* |
| * @param name_index Index of name |
| * |
| * @param length Content length in bytes |
| * |
| * @param map Table of stack map entries |
| * |
| * @param constant_pool Array of constants |
| */ |
| public StackMap(int name_index, int length, StackMapEntry[] map, ConstantPool constant_pool) { |
| super(Constants.ATTR_STACK_MAP, name_index, length, constant_pool); |
| |
| setStackMap(map); |
| } |
| |
| /** |
| * Construct object from file stream. |
| * |
| * @param name_index Index of name |
| * @param length Content length in bytes |
| * @param file Input stream |
| * @throws IOException |
| * @param constant_pool Array of constants |
| */ |
| StackMap(int name_index, int length, DataInputStream file, ConstantPool constant_pool) throws IOException { |
| this(name_index, length, (StackMapEntry[]) null, constant_pool); |
| |
| map_length = file.readUnsignedShort(); |
| map = new StackMapEntry[map_length]; |
| |
| for (int i = 0; i < map_length; i++) |
| map[i] = new StackMapEntry(file, constant_pool); |
| } |
| |
| /** |
| * Dump line number table 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(map_length); |
| for (int i = 0; i < map_length; i++) |
| map[i].dump(file); |
| } |
| |
| /** |
| * @return Array of stack map entries |
| */ |
| public final StackMapEntry[] getStackMap() { |
| return map; |
| } |
| |
| /** |
| * @param map Array of stack map entries |
| */ |
| public final void setStackMap(StackMapEntry[] map) { |
| this.map = map; |
| |
| map_length = (map == null) ? 0 : map.length; |
| } |
| |
| /** |
| * @return String representation. |
| */ |
| @Override |
| public final String toString() { |
| StringBuffer buf = new StringBuffer("StackMap("); |
| |
| for (int i = 0; i < map_length; i++) { |
| buf.append(map[i].toString()); |
| |
| if (i < map_length - 1) |
| buf.append(", "); |
| } |
| |
| buf.append(')'); |
| |
| return buf.toString(); |
| } |
| |
| // |
| // /** |
| // * @return deep copy of this attribute |
| // */ |
| // public Attribute copy(ConstantPool constant_pool) { |
| // StackMap c = (StackMap)clone(); |
| // |
| // c.map = new StackMapEntry[map_length]; |
| // for(int i=0; i < map_length; i++) |
| // c.map[i] = map[i].copy(); |
| // |
| // c.cpool = constant_pool; |
| // return c; |
| // } |
| |
| /** |
| * 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.visitStackMap(this); |
| } |
| |
| public final int getMapLength() { |
| return map_length; |
| } |
| } |