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 type of a local variable or item on stack
   * used in the StackMap entries.
   *
   * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
   * @see     StackMapEntry
   * @see     StackMap
   * @see     Constants
   */
  public final class StackMapType implements Cloneable {
    private byte         type;
    private int          index = -1; // Index to CONSTANT_Class or offset
    private ConstantPool constant_pool;
  
    /**
     * Construct object from file stream.
     * @param file Input stream
     * @throws IOException
     */
    StackMapType(DataInputStream file, ConstantPool constant_pool) throws IOException
    {
      this(file.readByte(), -1, constant_pool);
  
      if(hasIndex())
        setIndex(file.readShort());
  
      setConstantPool(constant_pool);
    }
  
    /**
     * @param type type tag as defined in the Constants interface
     * @param index index to constant pool, or byte code offset
     */
    public StackMapType(byte type, int index, ConstantPool constant_pool) {
      setType(type);
      setIndex(index);
      setConstantPool(constant_pool);
    }
  
    public void setType(byte t) {
      if((t < Constants.ITEM_Bogus) || (t > Constants.ITEM_NewObject))
        throw new RuntimeException("Illegal type for StackMapType: " + t);
      type = t;
    }
  
    public byte getType()       { return type; }
    public void setIndex(int t) { index = t; }
  
    /** @return index to constant pool if type == ITEM_Object, or offset
     * in byte code, if type == ITEM_NewObject, and -1 otherwise
     */
    public int  getIndex()      { return index; }
  
    /**
     * Dump type entries to file.
     *
     * @param file Output file stream
     * @throws IOException
     */
    public final void dump(DataOutputStream file) throws IOException
    {
      file.writeByte(type);
      if(hasIndex())
        file.writeShort(getIndex());
    }
  
    /** @return true, if type is either ITEM_Object or ITEM_NewObject
     */
    public final boolean hasIndex() {
      return ((type == Constants.ITEM_Object) ||
              (type == Constants.ITEM_NewObject));
    }
  
    private String printIndex() {
      if(type == Constants.ITEM_Object)
        return ", class=" + constant_pool.constantToString(index, Constants.CONSTANT_Class);
      else if(type == Constants.ITEM_NewObject)
        return ", offset=" + index;
      else
        return "";
    }
  
    /**
     * @return String representation
     */
    public final String toString() {
      return "(type=" + Constants.ITEM_NAMES[type] + printIndex() + ")";
    }
  
    /**
     * @return deep copy of this object
     */
    public StackMapType copy() {
      try {
        return (StackMapType)clone();
      } catch(CloneNotSupportedException e) {}
  
      return null;
    }
  
    /**
     * @return Constant pool used by this object.
     */
    public final ConstantPool getConstantPool() { return constant_pool; }
  
    /**
     * @param constant_pool Constant pool to be used for this object.
     */
    public final void setConstantPool(ConstantPool constant_pool) {
      this.constant_pool = constant_pool;
    }
  }
  