content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  package jaxp.sun.org.apache.bcel.internal.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 jaxp.sun.org.apache.bcel.internal.Constants;
  
  import  java.io.*;
  
  /**
   * This class represents the table of exceptions that are thrown by a
   * method. This attribute may be used once per method.  The name of
   * this class is <em>ExceptionTable</em> for historical reasons; The
   * Java Virtual Machine Specification, Second Edition defines this
   * attribute using the name <em>Exceptions</em> (which is inconsistent
   * with the other classes).
   *
   * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
   * @see     Code
   */
  public final class ExceptionTable extends Attribute {
    private int   number_of_exceptions;  // Table of indices into
    private int[] exception_index_table; // constant pool
  
    /**
     * Initialize from another object. Note that both objects use the same
     * references (shallow copy). Use copy() for a physical copy.
     */
    public ExceptionTable(ExceptionTable c) {
      this(c.getNameIndex(), c.getLength(), c.getExceptionIndexTable(),
           c.getConstantPool());
    }
  
    /**
     * @param name_index Index in constant pool
     * @param length Content length in bytes
     * @param exception_index_table Table of indices in constant pool
     * @param constant_pool Array of constants
     */
    public ExceptionTable(int        name_index, int length,
                          int[]      exception_index_table,
                          ConstantPool constant_pool)
    {
      super(Constants.ATTR_EXCEPTIONS, name_index, length, constant_pool);
      setExceptionIndexTable(exception_index_table);
    }
  
    /**
     * Construct object from file stream.
     * @param name_index Index in constant pool
     * @param length Content length in bytes
     * @param file Input stream
     * @param constant_pool Array of constants
     * @throws IOException
     */
    ExceptionTable(int name_index, int length, DataInputStream file,
                   ConstantPool constant_pool) throws IOException
    {
      this(name_index, length, (int[])null, constant_pool);
  
      number_of_exceptions  = file.readUnsignedShort();
      exception_index_table = new int[number_of_exceptions];
  
      for(int i=0; i < number_of_exceptions; i++)
        exception_index_table[i] = file.readUnsignedShort();
    }
  
    /**
     * 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
     */
    public void accept(Visitor v) {
      v.visitExceptionTable(this);
    }
  
    /**
     * Dump exceptions attribute to file stream in binary format.
     *
     * @param file Output file stream
     * @throws IOException
     */
    public final void dump(DataOutputStream file) throws IOException
    {
      super.dump(file);
      file.writeShort(number_of_exceptions);
      for(int i=0; i < number_of_exceptions; i++)
        file.writeShort(exception_index_table[i]);
    }
  
    /**
     * @return Array of indices into constant pool of thrown exceptions.
     */
    public final int[] getExceptionIndexTable() {return exception_index_table;}
    /**
     * @return Length of exception table.
     */
    public final int getNumberOfExceptions() { return number_of_exceptions; }
  
    /**
     * @return class names of thrown exceptions
     */
    public final String[] getExceptionNames() {
      String[] names = new String[number_of_exceptions];
      for(int i=0; i < number_of_exceptions; i++)
        names[i] = constant_pool.getConstantString(exception_index_table[i],
                                                   Constants.CONSTANT_Class).
          replace('/', '.');
      return names;
    }
  
    /**
     * @param exception_index_table.
     * Also redefines number_of_exceptions according to table length.
     */
    public final void setExceptionIndexTable(int[] exception_index_table) {
      this.exception_index_table = exception_index_table;
      number_of_exceptions       = (exception_index_table == null)? 0 :
        exception_index_table.length;
    }
    /**
     * @return String representation, i.e., a list of thrown exceptions.
     */
    public final String toString() {
      StringBuffer buf = new StringBuffer("");
      String       str;
  
      for(int i=0; i < number_of_exceptions; i++) {
        str = constant_pool.getConstantString(exception_index_table[i],
                                              Constants.CONSTANT_Class);
        buf.append(Utility.compactClassName(str, false));
  
        if(i < number_of_exceptions - 1)
          buf.append(", ");
      }
  
      return buf.toString();
    }
  
    /**
     * @return deep copy of this attribute
     */
    public Attribute copy(ConstantPool constant_pool) {
      ExceptionTable c = (ExceptionTable)clone();
      c.exception_index_table = (int[])exception_index_table.clone();
      c.constant_pool = constant_pool;
      return c;
    }
  }
  