1. package com.sun.org.apache.bcel.internal.generic;

  2. 

  3. /* ====================================================================

  4.  * The Apache Software License, Version 1.1

  5.  *

  6.  * Copyright (c) 2001 The Apache Software Foundation.  All rights

  7.  * reserved.

  8.  *

  9.  * Redistribution and use in source and binary forms, with or without

  10.  * modification, are permitted provided that the following conditions

  11.  * are met:

  12.  *

  13.  * 1. Redistributions of source code must retain the above copyright

  14.  *    notice, this list of conditions and the following disclaimer.

  15.  *

  16.  * 2. Redistributions in binary form must reproduce the above copyright

  17.  *    notice, this list of conditions and the following disclaimer in

  18.  *    the documentation and/or other materials provided with the

  19.  *    distribution.

  20.  *

  21.  * 3. The end-user documentation included with the redistribution,

  22.  *    if any, must include the following acknowledgment:

  23.  *       "This product includes software developed by the

  24.  *        Apache Software Foundation (http://www.apache.org/)."

  25.  *    Alternately, this acknowledgment may appear in the software itself,

  26.  *    if and wherever such third-party acknowledgments normally appear.

  27.  *

  28.  * 4. The names "Apache" and "Apache Software Foundation" and

  29.  *    "Apache BCEL" must not be used to endorse or promote products

  30.  *    derived from this software without prior written permission. For

  31.  *    written permission, please contact apache@apache.org.

  32.  *

  33.  * 5. Products derived from this software may not be called "Apache",

  34.  *    "Apache BCEL", nor may "Apache" appear in their name, without

  35.  *    prior written permission of the Apache Software Foundation.

  36.  *

  37.  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED

  38.  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

  39.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

  40.  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR

  41.  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

  42.  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

  43.  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

  44.  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

  45.  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

  46.  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

  47.  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

  48.  * SUCH DAMAGE.

  49.  * ====================================================================

  50.  *

  51.  * This software consists of voluntary contributions made by many

  52.  * individuals on behalf of the Apache Software Foundation.  For more

  53.  * information on the Apache Software Foundation, please see

  54.  * <http://www.apache.org/>.

  55.  */

  56. 

  57. import com.sun.org.apache.bcel.internal.Constants;

  58. import com.sun.org.apache.bcel.internal.ExceptionConstants;

  59. 

  60. /** 

  61.  * PUTFIELD - Put field in object

  62.  * <PRE>Stack: ..., objectref, value -> ...</PRE>

  63.  * OR

  64.  * <PRE>Stack: ..., objectref, value.word1, value.word2 -> ...</PRE>

  65.  *

  66.  * @version $Id: PUTFIELD.java,v 1.1.1.1 2001/10/29 20:00:25 jvanzyl Exp $

  67.  * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>

  68.  */

  69. public class PUTFIELD extends FieldInstruction implements ExceptionThrower{

  70.   /**

  71.    * Empty constructor needed for the Class.newInstance() statement in

  72.    * Instruction.readInstruction(). Not to be used otherwise.

  73.    */

  74.   PUTFIELD() {}

  75. 

  76.   public PUTFIELD(int index) {

  77.     super(Constants.PUTFIELD, index);

  78.   }

  79. 

  80.   public int consumeStack(ConstantPoolGen cpg) { return getFieldSize(cpg) + 1; }

  81. 

  82.   public Class[] getExceptions() {

  83.     Class[] cs = new Class[2 + ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length];

  84. 

  85.     System.arraycopy(ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION, 0,

  86. 		     cs, 0, ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length);

  87. 

  88.     cs[ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length+1] =

  89.       ExceptionConstants.INCOMPATIBLE_CLASS_CHANGE_ERROR;

  90.     cs[ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length] =

  91.       ExceptionConstants.NULL_POINTER_EXCEPTION;

  92. 

  93.     return cs;

  94.   }

  95. 

  96. 

  97.   /**

  98.    * Call corresponding visitor method(s). The order is:

  99.    * Call visitor methods of implemented interfaces first, then

  100.    * call methods according to the class hierarchy in descending order,

  101.    * i.e., the most specific visitXXX() call comes last.

  102.    *

  103.    * @param v Visitor object

  104.    */

  105.   public void accept(Visitor v) {

  106.     v.visitExceptionThrower(this);

  107.     v.visitTypedInstruction(this);

  108.     v.visitLoadClass(this);

  109.     v.visitCPInstruction(this);

  110.     v.visitFieldOrMethod(this);

  111.     v.visitFieldInstruction(this);

  112.     v.visitPUTFIELD(this);

  113.   }

  114. }