286N/A/*
286N/A * reserved comment block
286N/A * DO NOT REMOVE OR ALTER!
286N/A */
286N/Apackage com.sun.org.apache.bcel.internal.classfile;
286N/A
286N/A/* ====================================================================
286N/A * The Apache Software License, Version 1.1
286N/A *
286N/A * Copyright (c) 2001 The Apache Software Foundation. All rights
286N/A * reserved.
286N/A *
286N/A * Redistribution and use in source and binary forms, with or without
286N/A * modification, are permitted provided that the following conditions
286N/A * are met:
286N/A *
286N/A * 1. Redistributions of source code must retain the above copyright
286N/A * notice, this list of conditions and the following disclaimer.
286N/A *
286N/A * 2. Redistributions in binary form must reproduce the above copyright
286N/A * notice, this list of conditions and the following disclaimer in
286N/A * the documentation and/or other materials provided with the
286N/A * distribution.
286N/A *
286N/A * 3. The end-user documentation included with the redistribution,
286N/A * if any, must include the following acknowledgment:
286N/A * "This product includes software developed by the
286N/A * Apache Software Foundation (http://www.apache.org/)."
286N/A * Alternately, this acknowledgment may appear in the software itself,
286N/A * if and wherever such third-party acknowledgments normally appear.
286N/A *
286N/A * 4. The names "Apache" and "Apache Software Foundation" and
286N/A * "Apache BCEL" must not be used to endorse or promote products
286N/A * derived from this software without prior written permission. For
286N/A * written permission, please contact apache@apache.org.
286N/A *
286N/A * 5. Products derived from this software may not be called "Apache",
286N/A * "Apache BCEL", nor may "Apache" appear in their name, without
286N/A * prior written permission of the Apache Software Foundation.
286N/A *
286N/A * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
286N/A * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
286N/A * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
286N/A * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
286N/A * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
286N/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
286N/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
286N/A * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
286N/A * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
286N/A * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
286N/A * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
286N/A * SUCH DAMAGE.
286N/A * ====================================================================
286N/A *
286N/A * This software consists of voluntary contributions made by many
286N/A * individuals on behalf of the Apache Software Foundation. For more
286N/A * information on the Apache Software Foundation, please see
286N/A * <http://www.apache.org/>.
286N/A */
286N/A
286N/Aimport com.sun.org.apache.bcel.internal.Constants;
286N/Aimport java.io.*;
286N/A
286N/A/**
286N/A * This class represents colection of local variables in a
286N/A * method. This attribute is contained in the <em>Code</em> attribute.
286N/A *
286N/A * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
286N/A * @see Code
286N/A * @see LocalVariable
286N/A */
286N/Apublic class LocalVariableTable extends Attribute {
286N/A private int local_variable_table_length; // Table of local
286N/A private LocalVariable[] local_variable_table; // variables
286N/A
286N/A /**
286N/A * Initialize from another object. Note that both objects use the same
286N/A * references (shallow copy). Use copy() for a physical copy.
286N/A */
286N/A public LocalVariableTable(LocalVariableTable c) {
286N/A this(c.getNameIndex(), c.getLength(), c.getLocalVariableTable(),
286N/A c.getConstantPool());
286N/A }
286N/A
286N/A /**
286N/A * @param name_index Index in constant pool to `LocalVariableTable'
286N/A * @param length Content length in bytes
286N/A * @param local_variable_table Table of local variables
286N/A * @param constant_pool Array of constants
286N/A */
286N/A public LocalVariableTable(int name_index, int length,
286N/A LocalVariable[] local_variable_table,
286N/A ConstantPool constant_pool)
286N/A {
286N/A super(Constants.ATTR_LOCAL_VARIABLE_TABLE, name_index, length, constant_pool);
286N/A setLocalVariableTable(local_variable_table);
286N/A }
286N/A
286N/A /**
286N/A * Construct object from file stream.
286N/A * @param name_index Index in constant pool
286N/A * @param length Content length in bytes
286N/A * @param file Input stream
286N/A * @param constant_pool Array of constants
286N/A * @throws IOException
286N/A */
286N/A LocalVariableTable(int name_index, int length, DataInputStream file,
286N/A ConstantPool constant_pool) throws IOException
286N/A {
286N/A this(name_index, length, (LocalVariable[])null, constant_pool);
286N/A
286N/A local_variable_table_length = (file.readUnsignedShort());
286N/A local_variable_table = new LocalVariable[local_variable_table_length];
286N/A
286N/A for(int i=0; i < local_variable_table_length; i++)
286N/A local_variable_table[i] = new LocalVariable(file, constant_pool);
286N/A }
286N/A
286N/A /**
286N/A * Called by objects that are traversing the nodes of the tree implicitely
286N/A * defined by the contents of a Java class. I.e., the hierarchy of methods,
286N/A * fields, attributes, etc. spawns a tree of objects.
286N/A *
286N/A * @param v Visitor object
286N/A */
286N/A public void accept(Visitor v) {
286N/A v.visitLocalVariableTable(this);
286N/A }
286N/A
286N/A /**
286N/A * Dump local variable table attribute to file stream in binary format.
286N/A *
286N/A * @param file Output file stream
286N/A * @throws IOException
286N/A */
286N/A public final void dump(DataOutputStream file) throws IOException
286N/A {
286N/A super.dump(file);
286N/A file.writeShort(local_variable_table_length);
286N/A for(int i=0; i < local_variable_table_length; i++)
286N/A local_variable_table[i].dump(file);
286N/A }
286N/A
286N/A /**
286N/A * @return Array of local variables of method.
286N/A */
286N/A public final LocalVariable[] getLocalVariableTable() {
286N/A return local_variable_table;
286N/A }
286N/A
286N/A /** @return first matching variable using index
286N/A */
286N/A public final LocalVariable getLocalVariable(int index) {
286N/A for(int i=0; i < local_variable_table_length; i++)
286N/A if(local_variable_table[i].getIndex() == index)
286N/A return local_variable_table[i];
286N/A
286N/A return null;
286N/A }
286N/A
286N/A public final void setLocalVariableTable(LocalVariable[] local_variable_table)
286N/A {
286N/A this.local_variable_table = local_variable_table;
286N/A local_variable_table_length = (local_variable_table == null)? 0 :
286N/A local_variable_table.length;
286N/A }
286N/A
286N/A /**
286N/A * @return String representation.
286N/A */
286N/A public final String toString() {
286N/A StringBuffer buf = new StringBuffer("");
286N/A
286N/A for(int i=0; i < local_variable_table_length; i++) {
286N/A buf.append(local_variable_table[i].toString());
286N/A
286N/A if(i < local_variable_table_length - 1)
286N/A buf.append('\n');
286N/A }
286N/A
286N/A return buf.toString();
286N/A }
286N/A
286N/A /**
286N/A * @return deep copy of this attribute
286N/A */
286N/A public Attribute copy(ConstantPool constant_pool) {
286N/A LocalVariableTable c = (LocalVariableTable)clone();
286N/A
286N/A c.local_variable_table = new LocalVariable[local_variable_table_length];
286N/A for(int i=0; i < local_variable_table_length; i++)
286N/A c.local_variable_table[i] = local_variable_table[i].copy();
286N/A
286N/A c.constant_pool = constant_pool;
286N/A return c;
286N/A }
286N/A
286N/A public final int getTableLength() { return local_variable_table_length; }
286N/A}